ctl.c revision 267537
1/*- 2 * Copyright (c) 2003-2009 Silicon Graphics International Corp. 3 * Copyright (c) 2012 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * Portions of this software were developed by Edward Tomasz Napierala 7 * under sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification. 15 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 16 * substantially similar to the "NO WARRANTY" disclaimer below 17 * ("Disclaimer") and any redistribution must be conditioned upon 18 * including a substantially similar Disclaimer requirement for further 19 * binary redistribution. 20 * 21 * NO WARRANTY 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 31 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGES. 33 * 34 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl.c#8 $ 35 */ 36/* 37 * CAM Target Layer, a SCSI device emulation subsystem. 38 * 39 * Author: Ken Merry <ken@FreeBSD.org> 40 */ 41 42#define _CTL_C 43 44#include <sys/cdefs.h> 45__FBSDID("$FreeBSD: head/sys/cam/ctl/ctl.c 267537 2014-06-16 11:00:14Z mav $"); 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/types.h> 51#include <sys/kthread.h> 52#include <sys/bio.h> 53#include <sys/fcntl.h> 54#include <sys/lock.h> 55#include <sys/module.h> 56#include <sys/mutex.h> 57#include <sys/condvar.h> 58#include <sys/malloc.h> 59#include <sys/conf.h> 60#include <sys/ioccom.h> 61#include <sys/queue.h> 62#include <sys/sbuf.h> 63#include <sys/smp.h> 64#include <sys/endian.h> 65#include <sys/sysctl.h> 66 67#include <cam/cam.h> 68#include <cam/scsi/scsi_all.h> 69#include <cam/scsi/scsi_da.h> 70#include <cam/ctl/ctl_io.h> 71#include <cam/ctl/ctl.h> 72#include <cam/ctl/ctl_frontend.h> 73#include <cam/ctl/ctl_frontend_internal.h> 74#include <cam/ctl/ctl_util.h> 75#include <cam/ctl/ctl_backend.h> 76#include <cam/ctl/ctl_ioctl.h> 77#include <cam/ctl/ctl_ha.h> 78#include <cam/ctl/ctl_private.h> 79#include <cam/ctl/ctl_debug.h> 80#include <cam/ctl/ctl_scsi_all.h> 81#include <cam/ctl/ctl_error.h> 82 83struct ctl_softc *control_softc = NULL; 84 85/* 86 * The default is to run with CTL_DONE_THREAD turned on. Completed 87 * transactions are queued for processing by the CTL work thread. When 88 * CTL_DONE_THREAD is not defined, completed transactions are processed in 89 * the caller's context. 90 */ 91#define CTL_DONE_THREAD 92 93/* 94 * Use the serial number and device ID provided by the backend, rather than 95 * making up our own. 96 */ 97#define CTL_USE_BACKEND_SN 98 99/* 100 * Size and alignment macros needed for Copan-specific HA hardware. These 101 * can go away when the HA code is re-written, and uses busdma for any 102 * hardware. 103 */ 104#define CTL_ALIGN_8B(target, source, type) \ 105 if (((uint32_t)source & 0x7) != 0) \ 106 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 107 else \ 108 target = (type)source; 109 110#define CTL_SIZE_8B(target, size) \ 111 if ((size & 0x7) != 0) \ 112 target = size + (0x8 - (size & 0x7)); \ 113 else \ 114 target = size; 115 116#define CTL_ALIGN_8B_MARGIN 16 117 118/* 119 * Template mode pages. 120 */ 121 122/* 123 * Note that these are default values only. The actual values will be 124 * filled in when the user does a mode sense. 125 */ 126static struct copan_power_subpage power_page_default = { 127 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 128 /*subpage*/ PWR_SUBPAGE_CODE, 129 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 130 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 131 /*page_version*/ PWR_VERSION, 132 /* total_luns */ 26, 133 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 134 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 135 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 136 0, 0, 0, 0, 0, 0} 137}; 138 139static struct copan_power_subpage power_page_changeable = { 140 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 141 /*subpage*/ PWR_SUBPAGE_CODE, 142 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 143 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 144 /*page_version*/ 0, 145 /* total_luns */ 0, 146 /* max_active_luns*/ 0, 147 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 148 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 149 0, 0, 0, 0, 0, 0} 150}; 151 152static struct copan_aps_subpage aps_page_default = { 153 APS_PAGE_CODE | SMPH_SPF, //page_code 154 APS_SUBPAGE_CODE, //subpage 155 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 156 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 157 APS_VERSION, //page_version 158 0, //lock_active 159 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 160 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 161 0, 0, 0, 0, 0} //reserved 162}; 163 164static struct copan_aps_subpage aps_page_changeable = { 165 APS_PAGE_CODE | SMPH_SPF, //page_code 166 APS_SUBPAGE_CODE, //subpage 167 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 168 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 169 0, //page_version 170 0, //lock_active 171 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 172 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 173 0, 0, 0, 0, 0} //reserved 174}; 175 176static struct copan_debugconf_subpage debugconf_page_default = { 177 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 178 DBGCNF_SUBPAGE_CODE, /* subpage */ 179 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 180 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 181 DBGCNF_VERSION, /* page_version */ 182 {CTL_TIME_IO_DEFAULT_SECS>>8, 183 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 184}; 185 186static struct copan_debugconf_subpage debugconf_page_changeable = { 187 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 188 DBGCNF_SUBPAGE_CODE, /* subpage */ 189 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 190 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 191 0, /* page_version */ 192 {0xff,0xff}, /* ctl_time_io_secs */ 193}; 194 195static struct scsi_format_page format_page_default = { 196 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 197 /*page_length*/sizeof(struct scsi_format_page) - 2, 198 /*tracks_per_zone*/ {0, 0}, 199 /*alt_sectors_per_zone*/ {0, 0}, 200 /*alt_tracks_per_zone*/ {0, 0}, 201 /*alt_tracks_per_lun*/ {0, 0}, 202 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 203 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 204 /*bytes_per_sector*/ {0, 0}, 205 /*interleave*/ {0, 0}, 206 /*track_skew*/ {0, 0}, 207 /*cylinder_skew*/ {0, 0}, 208 /*flags*/ SFP_HSEC, 209 /*reserved*/ {0, 0, 0} 210}; 211 212static struct scsi_format_page format_page_changeable = { 213 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 214 /*page_length*/sizeof(struct scsi_format_page) - 2, 215 /*tracks_per_zone*/ {0, 0}, 216 /*alt_sectors_per_zone*/ {0, 0}, 217 /*alt_tracks_per_zone*/ {0, 0}, 218 /*alt_tracks_per_lun*/ {0, 0}, 219 /*sectors_per_track*/ {0, 0}, 220 /*bytes_per_sector*/ {0, 0}, 221 /*interleave*/ {0, 0}, 222 /*track_skew*/ {0, 0}, 223 /*cylinder_skew*/ {0, 0}, 224 /*flags*/ 0, 225 /*reserved*/ {0, 0, 0} 226}; 227 228static struct scsi_rigid_disk_page rigid_disk_page_default = { 229 /*page_code*/SMS_RIGID_DISK_PAGE, 230 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 231 /*cylinders*/ {0, 0, 0}, 232 /*heads*/ CTL_DEFAULT_HEADS, 233 /*start_write_precomp*/ {0, 0, 0}, 234 /*start_reduced_current*/ {0, 0, 0}, 235 /*step_rate*/ {0, 0}, 236 /*landing_zone_cylinder*/ {0, 0, 0}, 237 /*rpl*/ SRDP_RPL_DISABLED, 238 /*rotational_offset*/ 0, 239 /*reserved1*/ 0, 240 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 241 CTL_DEFAULT_ROTATION_RATE & 0xff}, 242 /*reserved2*/ {0, 0} 243}; 244 245static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 246 /*page_code*/SMS_RIGID_DISK_PAGE, 247 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 248 /*cylinders*/ {0, 0, 0}, 249 /*heads*/ 0, 250 /*start_write_precomp*/ {0, 0, 0}, 251 /*start_reduced_current*/ {0, 0, 0}, 252 /*step_rate*/ {0, 0}, 253 /*landing_zone_cylinder*/ {0, 0, 0}, 254 /*rpl*/ 0, 255 /*rotational_offset*/ 0, 256 /*reserved1*/ 0, 257 /*rotation_rate*/ {0, 0}, 258 /*reserved2*/ {0, 0} 259}; 260 261static struct scsi_caching_page caching_page_default = { 262 /*page_code*/SMS_CACHING_PAGE, 263 /*page_length*/sizeof(struct scsi_caching_page) - 2, 264 /*flags1*/ SCP_DISC | SCP_WCE, 265 /*ret_priority*/ 0, 266 /*disable_pf_transfer_len*/ {0xff, 0xff}, 267 /*min_prefetch*/ {0, 0}, 268 /*max_prefetch*/ {0xff, 0xff}, 269 /*max_pf_ceiling*/ {0xff, 0xff}, 270 /*flags2*/ 0, 271 /*cache_segments*/ 0, 272 /*cache_seg_size*/ {0, 0}, 273 /*reserved*/ 0, 274 /*non_cache_seg_size*/ {0, 0, 0} 275}; 276 277static struct scsi_caching_page caching_page_changeable = { 278 /*page_code*/SMS_CACHING_PAGE, 279 /*page_length*/sizeof(struct scsi_caching_page) - 2, 280 /*flags1*/ 0, 281 /*ret_priority*/ 0, 282 /*disable_pf_transfer_len*/ {0, 0}, 283 /*min_prefetch*/ {0, 0}, 284 /*max_prefetch*/ {0, 0}, 285 /*max_pf_ceiling*/ {0, 0}, 286 /*flags2*/ 0, 287 /*cache_segments*/ 0, 288 /*cache_seg_size*/ {0, 0}, 289 /*reserved*/ 0, 290 /*non_cache_seg_size*/ {0, 0, 0} 291}; 292 293static struct scsi_control_page control_page_default = { 294 /*page_code*/SMS_CONTROL_MODE_PAGE, 295 /*page_length*/sizeof(struct scsi_control_page) - 2, 296 /*rlec*/0, 297 /*queue_flags*/0, 298 /*eca_and_aen*/0, 299 /*reserved*/0, 300 /*aen_holdoff_period*/{0, 0} 301}; 302 303static struct scsi_control_page control_page_changeable = { 304 /*page_code*/SMS_CONTROL_MODE_PAGE, 305 /*page_length*/sizeof(struct scsi_control_page) - 2, 306 /*rlec*/SCP_DSENSE, 307 /*queue_flags*/0, 308 /*eca_and_aen*/0, 309 /*reserved*/0, 310 /*aen_holdoff_period*/{0, 0} 311}; 312 313 314/* 315 * XXX KDM move these into the softc. 316 */ 317static int rcv_sync_msg; 318static int persis_offset; 319static uint8_t ctl_pause_rtr; 320static int ctl_is_single = 1; 321static int index_to_aps_page; 322 323SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 324static int worker_threads = 1; 325TUNABLE_INT("kern.cam.ctl.worker_threads", &worker_threads); 326SYSCTL_INT(_kern_cam_ctl, OID_AUTO, worker_threads, CTLFLAG_RDTUN, 327 &worker_threads, 1, "Number of worker threads"); 328static int verbose = 0; 329TUNABLE_INT("kern.cam.ctl.verbose", &verbose); 330SYSCTL_INT(_kern_cam_ctl, OID_AUTO, verbose, CTLFLAG_RWTUN, 331 &verbose, 0, "Show SCSI errors returned to initiator"); 332 333/* 334 * Serial number (0x80), device id (0x83), supported pages (0x00), 335 * Block limits (0xB0) and Logical Block Provisioning (0xB2) 336 */ 337#define SCSI_EVPD_NUM_SUPPORTED_PAGES 5 338 339static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 340 int param); 341static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 342static int ctl_init(void); 343void ctl_shutdown(void); 344static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 345static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 346static void ctl_ioctl_online(void *arg); 347static void ctl_ioctl_offline(void *arg); 348static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 349static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 350static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 351static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 352static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 353static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock); 354static int ctl_ioctl_submit_wait(union ctl_io *io); 355static void ctl_ioctl_datamove(union ctl_io *io); 356static void ctl_ioctl_done(union ctl_io *io); 357static void ctl_ioctl_hard_startstop_callback(void *arg, 358 struct cfi_metatask *metatask); 359static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 360static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 361 struct ctl_ooa *ooa_hdr, 362 struct ctl_ooa_entry *kern_entries); 363static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 364 struct thread *td); 365uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 366uint32_t ctl_port_idx(int port_num); 367#ifdef unused 368static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 369 uint32_t targ_target, uint32_t targ_lun, 370 int can_wait); 371static void ctl_kfree_io(union ctl_io *io); 372#endif /* unused */ 373static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 374 struct ctl_be_lun *be_lun, struct ctl_id target_id); 375static int ctl_free_lun(struct ctl_lun *lun); 376static void ctl_create_lun(struct ctl_be_lun *be_lun); 377/** 378static void ctl_failover_change_pages(struct ctl_softc *softc, 379 struct ctl_scsiio *ctsio, int master); 380**/ 381 382static int ctl_do_mode_select(union ctl_io *io); 383static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 384 uint64_t res_key, uint64_t sa_res_key, 385 uint8_t type, uint32_t residx, 386 struct ctl_scsiio *ctsio, 387 struct scsi_per_res_out *cdb, 388 struct scsi_per_res_out_parms* param); 389static void ctl_pro_preempt_other(struct ctl_lun *lun, 390 union ctl_ha_msg *msg); 391static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 392static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 393static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 394static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 395static int ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, 396 int alloc_len); 397static int ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len); 398static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 399static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 400static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 401static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 402static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 403 union ctl_io *ooa_io); 404static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 405 union ctl_io *starting_io); 406static int ctl_check_blocked(struct ctl_lun *lun); 407static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 408 struct ctl_lun *lun, 409 struct ctl_cmd_entry *entry, 410 struct ctl_scsiio *ctsio); 411//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 412static void ctl_failover(void); 413static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 414 struct ctl_scsiio *ctsio); 415static int ctl_scsiio(struct ctl_scsiio *ctsio); 416 417static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 418static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 419 ctl_ua_type ua_type); 420static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 421 ctl_ua_type ua_type); 422static int ctl_abort_task(union ctl_io *io); 423static void ctl_run_task_queue(struct ctl_softc *ctl_softc); 424#ifdef CTL_IO_DELAY 425static void ctl_datamove_timer_wakeup(void *arg); 426static void ctl_done_timer_wakeup(void *arg); 427#endif /* CTL_IO_DELAY */ 428 429static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 430static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 431static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 432static void ctl_datamove_remote_write(union ctl_io *io); 433static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 434static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 435static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 436static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 437 ctl_ha_dt_cb callback); 438static void ctl_datamove_remote_read(union ctl_io *io); 439static void ctl_datamove_remote(union ctl_io *io); 440static int ctl_process_done(union ctl_io *io, int have_lock); 441static void ctl_work_thread(void *arg); 442 443/* 444 * Load the serialization table. This isn't very pretty, but is probably 445 * the easiest way to do it. 446 */ 447#include "ctl_ser_table.c" 448 449/* 450 * We only need to define open, close and ioctl routines for this driver. 451 */ 452static struct cdevsw ctl_cdevsw = { 453 .d_version = D_VERSION, 454 .d_flags = 0, 455 .d_open = ctl_open, 456 .d_close = ctl_close, 457 .d_ioctl = ctl_ioctl, 458 .d_name = "ctl", 459}; 460 461 462MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 463 464static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 465 466static moduledata_t ctl_moduledata = { 467 "ctl", 468 ctl_module_event_handler, 469 NULL 470}; 471 472DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 473MODULE_VERSION(ctl, 1); 474 475static void 476ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 477 union ctl_ha_msg *msg_info) 478{ 479 struct ctl_scsiio *ctsio; 480 481 if (msg_info->hdr.original_sc == NULL) { 482 printf("%s: original_sc == NULL!\n", __func__); 483 /* XXX KDM now what? */ 484 return; 485 } 486 487 ctsio = &msg_info->hdr.original_sc->scsiio; 488 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 489 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 490 ctsio->io_hdr.status = msg_info->hdr.status; 491 ctsio->scsi_status = msg_info->scsi.scsi_status; 492 ctsio->sense_len = msg_info->scsi.sense_len; 493 ctsio->sense_residual = msg_info->scsi.sense_residual; 494 ctsio->residual = msg_info->scsi.residual; 495 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 496 sizeof(ctsio->sense_data)); 497 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 498 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 499 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 500 ctl_wakeup_thread(); 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 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 547 ctl_wakeup_thread(); 548} 549 550/* 551 * ISC (Inter Shelf Communication) event handler. Events from the HA 552 * subsystem come in here. 553 */ 554static void 555ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 556{ 557 struct ctl_softc *ctl_softc; 558 union ctl_io *io; 559 struct ctl_prio *presio; 560 ctl_ha_status isc_status; 561 562 ctl_softc = control_softc; 563 io = NULL; 564 565 566#if 0 567 printf("CTL: Isc Msg event %d\n", event); 568#endif 569 if (event == CTL_HA_EVT_MSG_RECV) { 570 union ctl_ha_msg msg_info; 571 572 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 573 sizeof(msg_info), /*wait*/ 0); 574#if 0 575 printf("CTL: msg_type %d\n", msg_info.msg_type); 576#endif 577 if (isc_status != 0) { 578 printf("Error receiving message, status = %d\n", 579 isc_status); 580 return; 581 } 582 mtx_lock(&ctl_softc->ctl_lock); 583 584 switch (msg_info.hdr.msg_type) { 585 case CTL_MSG_SERIALIZE: 586#if 0 587 printf("Serialize\n"); 588#endif 589 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 590 if (io == NULL) { 591 printf("ctl_isc_event_handler: can't allocate " 592 "ctl_io!\n"); 593 /* Bad Juju */ 594 /* Need to set busy and send msg back */ 595 mtx_unlock(&ctl_softc->ctl_lock); 596 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 597 msg_info.hdr.status = CTL_SCSI_ERROR; 598 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 599 msg_info.scsi.sense_len = 0; 600 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 601 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 602 } 603 goto bailout; 604 } 605 ctl_zero_io(io); 606 // populate ctsio from msg_info 607 io->io_hdr.io_type = CTL_IO_SCSI; 608 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 609 io->io_hdr.original_sc = msg_info.hdr.original_sc; 610#if 0 611 printf("pOrig %x\n", (int)msg_info.original_sc); 612#endif 613 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 614 CTL_FLAG_IO_ACTIVE; 615 /* 616 * If we're in serialization-only mode, we don't 617 * want to go through full done processing. Thus 618 * the COPY flag. 619 * 620 * XXX KDM add another flag that is more specific. 621 */ 622 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 623 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 624 io->io_hdr.nexus = msg_info.hdr.nexus; 625#if 0 626 printf("targ %d, port %d, iid %d, lun %d\n", 627 io->io_hdr.nexus.targ_target.id, 628 io->io_hdr.nexus.targ_port, 629 io->io_hdr.nexus.initid.id, 630 io->io_hdr.nexus.targ_lun); 631#endif 632 io->scsiio.tag_num = msg_info.scsi.tag_num; 633 io->scsiio.tag_type = msg_info.scsi.tag_type; 634 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 635 CTL_MAX_CDBLEN); 636 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 637 struct ctl_cmd_entry *entry; 638 uint8_t opcode; 639 640 opcode = io->scsiio.cdb[0]; 641 entry = &ctl_cmd_table[opcode]; 642 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 643 io->io_hdr.flags |= 644 entry->flags & CTL_FLAG_DATA_MASK; 645 } 646 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 647 &io->io_hdr, links); 648 ctl_wakeup_thread(); 649 break; 650 651 /* Performed on the Originating SC, XFER mode only */ 652 case CTL_MSG_DATAMOVE: { 653 struct ctl_sg_entry *sgl; 654 int i, j; 655 656 io = msg_info.hdr.original_sc; 657 if (io == NULL) { 658 printf("%s: original_sc == NULL!\n", __func__); 659 /* XXX KDM do something here */ 660 break; 661 } 662 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 663 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 664 /* 665 * Keep track of this, we need to send it back over 666 * when the datamove is complete. 667 */ 668 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 669 670 if (msg_info.dt.sg_sequence == 0) { 671 /* 672 * XXX KDM we use the preallocated S/G list 673 * here, but we'll need to change this to 674 * dynamic allocation if we need larger S/G 675 * lists. 676 */ 677 if (msg_info.dt.kern_sg_entries > 678 sizeof(io->io_hdr.remote_sglist) / 679 sizeof(io->io_hdr.remote_sglist[0])) { 680 printf("%s: number of S/G entries " 681 "needed %u > allocated num %zd\n", 682 __func__, 683 msg_info.dt.kern_sg_entries, 684 sizeof(io->io_hdr.remote_sglist)/ 685 sizeof(io->io_hdr.remote_sglist[0])); 686 687 /* 688 * XXX KDM send a message back to 689 * the other side to shut down the 690 * DMA. The error will come back 691 * through via the normal channel. 692 */ 693 break; 694 } 695 sgl = io->io_hdr.remote_sglist; 696 memset(sgl, 0, 697 sizeof(io->io_hdr.remote_sglist)); 698 699 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 700 701 io->scsiio.kern_sg_entries = 702 msg_info.dt.kern_sg_entries; 703 io->scsiio.rem_sg_entries = 704 msg_info.dt.kern_sg_entries; 705 io->scsiio.kern_data_len = 706 msg_info.dt.kern_data_len; 707 io->scsiio.kern_total_len = 708 msg_info.dt.kern_total_len; 709 io->scsiio.kern_data_resid = 710 msg_info.dt.kern_data_resid; 711 io->scsiio.kern_rel_offset = 712 msg_info.dt.kern_rel_offset; 713 /* 714 * Clear out per-DMA flags. 715 */ 716 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 717 /* 718 * Add per-DMA flags that are set for this 719 * particular DMA request. 720 */ 721 io->io_hdr.flags |= msg_info.dt.flags & 722 CTL_FLAG_RDMA_MASK; 723 } else 724 sgl = (struct ctl_sg_entry *) 725 io->scsiio.kern_data_ptr; 726 727 for (i = msg_info.dt.sent_sg_entries, j = 0; 728 i < (msg_info.dt.sent_sg_entries + 729 msg_info.dt.cur_sg_entries); i++, j++) { 730 sgl[i].addr = msg_info.dt.sg_list[j].addr; 731 sgl[i].len = msg_info.dt.sg_list[j].len; 732 733#if 0 734 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 735 __func__, 736 msg_info.dt.sg_list[j].addr, 737 msg_info.dt.sg_list[j].len, 738 sgl[i].addr, sgl[i].len, j, i); 739#endif 740 } 741#if 0 742 memcpy(&sgl[msg_info.dt.sent_sg_entries], 743 msg_info.dt.sg_list, 744 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 745#endif 746 747 /* 748 * If this is the last piece of the I/O, we've got 749 * the full S/G list. Queue processing in the thread. 750 * Otherwise wait for the next piece. 751 */ 752 if (msg_info.dt.sg_last != 0) { 753 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 754 &io->io_hdr, links); 755 ctl_wakeup_thread(); 756 } 757 break; 758 } 759 /* Performed on the Serializing (primary) SC, XFER mode only */ 760 case CTL_MSG_DATAMOVE_DONE: { 761 if (msg_info.hdr.serializing_sc == NULL) { 762 printf("%s: serializing_sc == NULL!\n", 763 __func__); 764 /* XXX KDM now what? */ 765 break; 766 } 767 /* 768 * We grab the sense information here in case 769 * there was a failure, so we can return status 770 * back to the initiator. 771 */ 772 io = msg_info.hdr.serializing_sc; 773 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 774 io->io_hdr.status = msg_info.hdr.status; 775 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 776 io->scsiio.sense_len = msg_info.scsi.sense_len; 777 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 778 io->io_hdr.port_status = msg_info.scsi.fetd_status; 779 io->scsiio.residual = msg_info.scsi.residual; 780 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 781 sizeof(io->scsiio.sense_data)); 782 783 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 784 &io->io_hdr, links); 785 ctl_wakeup_thread(); 786 break; 787 } 788 789 /* Preformed on Originating SC, SER_ONLY mode */ 790 case CTL_MSG_R2R: 791 io = msg_info.hdr.original_sc; 792 if (io == NULL) { 793 printf("%s: Major Bummer\n", __func__); 794 mtx_unlock(&ctl_softc->ctl_lock); 795 return; 796 } else { 797#if 0 798 printf("pOrig %x\n",(int) ctsio); 799#endif 800 } 801 io->io_hdr.msg_type = CTL_MSG_R2R; 802 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 803 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 804 &io->io_hdr, links); 805 ctl_wakeup_thread(); 806 break; 807 808 /* 809 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 810 * mode. 811 * Performed on the Originating (i.e. secondary) SC in XFER 812 * mode 813 */ 814 case CTL_MSG_FINISH_IO: 815 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 816 ctl_isc_handler_finish_xfer(ctl_softc, 817 &msg_info); 818 else 819 ctl_isc_handler_finish_ser_only(ctl_softc, 820 &msg_info); 821 break; 822 823 /* Preformed on Originating SC */ 824 case CTL_MSG_BAD_JUJU: 825 io = msg_info.hdr.original_sc; 826 if (io == NULL) { 827 printf("%s: Bad JUJU!, original_sc is NULL!\n", 828 __func__); 829 break; 830 } 831 ctl_copy_sense_data(&msg_info, io); 832 /* 833 * IO should have already been cleaned up on other 834 * SC so clear this flag so we won't send a message 835 * back to finish the IO there. 836 */ 837 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 838 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 839 840 /* io = msg_info.hdr.serializing_sc; */ 841 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 842 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 843 &io->io_hdr, links); 844 ctl_wakeup_thread(); 845 break; 846 847 /* Handle resets sent from the other side */ 848 case CTL_MSG_MANAGE_TASKS: { 849 struct ctl_taskio *taskio; 850 taskio = (struct ctl_taskio *)ctl_alloc_io( 851 (void *)ctl_softc->othersc_pool); 852 if (taskio == NULL) { 853 printf("ctl_isc_event_handler: can't allocate " 854 "ctl_io!\n"); 855 /* Bad Juju */ 856 /* should I just call the proper reset func 857 here??? */ 858 mtx_unlock(&ctl_softc->ctl_lock); 859 goto bailout; 860 } 861 ctl_zero_io((union ctl_io *)taskio); 862 taskio->io_hdr.io_type = CTL_IO_TASK; 863 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 864 taskio->io_hdr.nexus = msg_info.hdr.nexus; 865 taskio->task_action = msg_info.task.task_action; 866 taskio->tag_num = msg_info.task.tag_num; 867 taskio->tag_type = msg_info.task.tag_type; 868#ifdef CTL_TIME_IO 869 taskio->io_hdr.start_time = time_uptime; 870 getbintime(&taskio->io_hdr.start_bt); 871#if 0 872 cs_prof_gettime(&taskio->io_hdr.start_ticks); 873#endif 874#endif /* CTL_TIME_IO */ 875 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, 876 &taskio->io_hdr, links); 877 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 878 ctl_wakeup_thread(); 879 break; 880 } 881 /* Persistent Reserve action which needs attention */ 882 case CTL_MSG_PERS_ACTION: 883 presio = (struct ctl_prio *)ctl_alloc_io( 884 (void *)ctl_softc->othersc_pool); 885 if (presio == NULL) { 886 printf("ctl_isc_event_handler: can't allocate " 887 "ctl_io!\n"); 888 /* Bad Juju */ 889 /* Need to set busy and send msg back */ 890 mtx_unlock(&ctl_softc->ctl_lock); 891 goto bailout; 892 } 893 ctl_zero_io((union ctl_io *)presio); 894 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 895 presio->pr_msg = msg_info.pr; 896 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 897 &presio->io_hdr, links); 898 ctl_wakeup_thread(); 899 break; 900 case CTL_MSG_SYNC_FE: 901 rcv_sync_msg = 1; 902 break; 903 case CTL_MSG_APS_LOCK: { 904 // It's quicker to execute this then to 905 // queue it. 906 struct ctl_lun *lun; 907 struct ctl_page_index *page_index; 908 struct copan_aps_subpage *current_sp; 909 uint32_t targ_lun; 910 911 targ_lun = msg_info.hdr.nexus.targ_lun; 912 if (msg_info.hdr.nexus.lun_map_fn != NULL) 913 targ_lun = msg_info.hdr.nexus.lun_map_fn(msg_info.hdr.nexus.lun_map_arg, targ_lun); 914 915 lun = ctl_softc->ctl_luns[targ_lun]; 916 page_index = &lun->mode_pages.index[index_to_aps_page]; 917 current_sp = (struct copan_aps_subpage *) 918 (page_index->page_data + 919 (page_index->page_len * CTL_PAGE_CURRENT)); 920 921 current_sp->lock_active = msg_info.aps.lock_flag; 922 break; 923 } 924 default: 925 printf("How did I get here?\n"); 926 } 927 mtx_unlock(&ctl_softc->ctl_lock); 928 } else if (event == CTL_HA_EVT_MSG_SENT) { 929 if (param != CTL_HA_STATUS_SUCCESS) { 930 printf("Bad status from ctl_ha_msg_send status %d\n", 931 param); 932 } 933 return; 934 } else if (event == CTL_HA_EVT_DISCONNECT) { 935 printf("CTL: Got a disconnect from Isc\n"); 936 return; 937 } else { 938 printf("ctl_isc_event_handler: Unknown event %d\n", event); 939 return; 940 } 941 942bailout: 943 return; 944} 945 946static void 947ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 948{ 949 struct scsi_sense_data *sense; 950 951 sense = &dest->scsiio.sense_data; 952 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 953 dest->scsiio.scsi_status = src->scsi.scsi_status; 954 dest->scsiio.sense_len = src->scsi.sense_len; 955 dest->io_hdr.status = src->hdr.status; 956} 957 958static int 959ctl_init(void) 960{ 961 struct ctl_softc *softc; 962 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 963 struct ctl_frontend *fe; 964 uint8_t sc_id =0; 965 int i, error, retval; 966 //int isc_retval; 967 968 retval = 0; 969 ctl_pause_rtr = 0; 970 rcv_sync_msg = 0; 971 972 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 973 M_WAITOK | M_ZERO); 974 softc = control_softc; 975 976 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 977 "cam/ctl"); 978 979 softc->dev->si_drv1 = softc; 980 981 /* 982 * By default, return a "bad LUN" peripheral qualifier for unknown 983 * LUNs. The user can override this default using the tunable or 984 * sysctl. See the comment in ctl_inquiry_std() for more details. 985 */ 986 softc->inquiry_pq_no_lun = 1; 987 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 988 &softc->inquiry_pq_no_lun); 989 sysctl_ctx_init(&softc->sysctl_ctx); 990 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 991 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 992 CTLFLAG_RD, 0, "CAM Target Layer"); 993 994 if (softc->sysctl_tree == NULL) { 995 printf("%s: unable to allocate sysctl tree\n", __func__); 996 destroy_dev(softc->dev); 997 free(control_softc, M_DEVBUF); 998 control_softc = NULL; 999 return (ENOMEM); 1000 } 1001 1002 SYSCTL_ADD_INT(&softc->sysctl_ctx, 1003 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 1004 "inquiry_pq_no_lun", CTLFLAG_RW, 1005 &softc->inquiry_pq_no_lun, 0, 1006 "Report no lun possible for invalid LUNs"); 1007 1008 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 1009 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 1010 softc->open_count = 0; 1011 1012 /* 1013 * Default to actually sending a SYNCHRONIZE CACHE command down to 1014 * the drive. 1015 */ 1016 softc->flags = CTL_FLAG_REAL_SYNC; 1017 1018 /* 1019 * In Copan's HA scheme, the "master" and "slave" roles are 1020 * figured out through the slot the controller is in. Although it 1021 * is an active/active system, someone has to be in charge. 1022 */ 1023#ifdef NEEDTOPORT 1024 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 1025#endif 1026 1027 if (sc_id == 0) { 1028 softc->flags |= CTL_FLAG_MASTER_SHELF; 1029 persis_offset = 0; 1030 } else 1031 persis_offset = CTL_MAX_INITIATORS; 1032 1033 /* 1034 * XXX KDM need to figure out where we want to get our target ID 1035 * and WWID. Is it different on each port? 1036 */ 1037 softc->target.id = 0; 1038 softc->target.wwid[0] = 0x12345678; 1039 softc->target.wwid[1] = 0x87654321; 1040 STAILQ_INIT(&softc->lun_list); 1041 STAILQ_INIT(&softc->pending_lun_queue); 1042 STAILQ_INIT(&softc->task_queue); 1043 STAILQ_INIT(&softc->incoming_queue); 1044 STAILQ_INIT(&softc->rtr_queue); 1045 STAILQ_INIT(&softc->done_queue); 1046 STAILQ_INIT(&softc->isc_queue); 1047 STAILQ_INIT(&softc->fe_list); 1048 STAILQ_INIT(&softc->be_list); 1049 STAILQ_INIT(&softc->io_pools); 1050 1051 /* 1052 * We don't bother calling these with ctl_lock held here, because, 1053 * in theory, no one else can try to do anything while we're in our 1054 * module init routine. 1055 */ 1056 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1057 &internal_pool)!= 0){ 1058 printf("ctl: can't allocate %d entry internal pool, " 1059 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1060 return (ENOMEM); 1061 } 1062 1063 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1064 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1065 printf("ctl: can't allocate %d entry emergency pool, " 1066 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1067 ctl_pool_free(internal_pool); 1068 return (ENOMEM); 1069 } 1070 1071 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1072 &other_pool) != 0) 1073 { 1074 printf("ctl: can't allocate %d entry other SC pool, " 1075 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1076 ctl_pool_free(internal_pool); 1077 ctl_pool_free(emergency_pool); 1078 return (ENOMEM); 1079 } 1080 1081 softc->internal_pool = internal_pool; 1082 softc->emergency_pool = emergency_pool; 1083 softc->othersc_pool = other_pool; 1084 1085 if (worker_threads > MAXCPU || worker_threads == 0) { 1086 printf("invalid kern.cam.ctl.worker_threads value; " 1087 "setting to 1"); 1088 worker_threads = 1; 1089 } else if (worker_threads < 0) { 1090 if (mp_ncpus > 2) { 1091 /* 1092 * Using more than two worker threads actually hurts 1093 * performance due to lock contention. 1094 */ 1095 worker_threads = 2; 1096 } else { 1097 worker_threads = 1; 1098 } 1099 } 1100 1101 for (i = 0; i < worker_threads; i++) { 1102 error = kproc_kthread_add(ctl_work_thread, softc, 1103 &softc->work_thread, NULL, 0, 0, "ctl", "work%d", i); 1104 if (error != 0) { 1105 printf("error creating CTL work thread!\n"); 1106 ctl_pool_free(internal_pool); 1107 ctl_pool_free(emergency_pool); 1108 ctl_pool_free(other_pool); 1109 return (error); 1110 } 1111 } 1112 if (bootverbose) 1113 printf("ctl: CAM Target Layer loaded\n"); 1114 1115 /* 1116 * Initialize the initiator and portname mappings 1117 */ 1118 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1119 1120 /* 1121 * Initialize the ioctl front end. 1122 */ 1123 fe = &softc->ioctl_info.fe; 1124 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1125 fe->port_type = CTL_PORT_IOCTL; 1126 fe->num_requested_ctl_io = 100; 1127 fe->port_name = softc->ioctl_info.port_name; 1128 fe->port_online = ctl_ioctl_online; 1129 fe->port_offline = ctl_ioctl_offline; 1130 fe->onoff_arg = &softc->ioctl_info; 1131 fe->targ_enable = ctl_ioctl_targ_enable; 1132 fe->targ_disable = ctl_ioctl_targ_disable; 1133 fe->lun_enable = ctl_ioctl_lun_enable; 1134 fe->lun_disable = ctl_ioctl_lun_disable; 1135 fe->targ_lun_arg = &softc->ioctl_info; 1136 fe->fe_datamove = ctl_ioctl_datamove; 1137 fe->fe_done = ctl_ioctl_done; 1138 fe->max_targets = 15; 1139 fe->max_target_id = 15; 1140 1141 if (ctl_frontend_register(&softc->ioctl_info.fe, 1142 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1143 printf("ctl: ioctl front end registration failed, will " 1144 "continue anyway\n"); 1145 } 1146 1147#ifdef CTL_IO_DELAY 1148 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1149 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1150 sizeof(struct callout), CTL_TIMER_BYTES); 1151 return (EINVAL); 1152 } 1153#endif /* CTL_IO_DELAY */ 1154 1155 return (0); 1156} 1157 1158void 1159ctl_shutdown(void) 1160{ 1161 struct ctl_softc *softc; 1162 struct ctl_lun *lun, *next_lun; 1163 struct ctl_io_pool *pool; 1164 1165 softc = (struct ctl_softc *)control_softc; 1166 1167 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1168 printf("ctl: ioctl front end deregistration failed\n"); 1169 1170 mtx_lock(&softc->ctl_lock); 1171 1172 /* 1173 * Free up each LUN. 1174 */ 1175 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1176 next_lun = STAILQ_NEXT(lun, links); 1177 ctl_free_lun(lun); 1178 } 1179 1180 mtx_unlock(&softc->ctl_lock); 1181 1182 /* 1183 * This will rip the rug out from under any FETDs or anyone else 1184 * that has a pool allocated. Since we increment our module 1185 * refcount any time someone outside the main CTL module allocates 1186 * a pool, we shouldn't have any problems here. The user won't be 1187 * able to unload the CTL module until client modules have 1188 * successfully unloaded. 1189 */ 1190 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1191 ctl_pool_free(pool); 1192 1193#if 0 1194 ctl_shutdown_thread(softc->work_thread); 1195#endif 1196 1197 mtx_destroy(&softc->pool_lock); 1198 mtx_destroy(&softc->ctl_lock); 1199 1200 destroy_dev(softc->dev); 1201 1202 sysctl_ctx_free(&softc->sysctl_ctx); 1203 1204 free(control_softc, M_DEVBUF); 1205 control_softc = NULL; 1206 1207 if (bootverbose) 1208 printf("ctl: CAM Target Layer unloaded\n"); 1209} 1210 1211static int 1212ctl_module_event_handler(module_t mod, int what, void *arg) 1213{ 1214 1215 switch (what) { 1216 case MOD_LOAD: 1217 return (ctl_init()); 1218 case MOD_UNLOAD: 1219 return (EBUSY); 1220 default: 1221 return (EOPNOTSUPP); 1222 } 1223} 1224 1225/* 1226 * XXX KDM should we do some access checks here? Bump a reference count to 1227 * prevent a CTL module from being unloaded while someone has it open? 1228 */ 1229static int 1230ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1231{ 1232 return (0); 1233} 1234 1235static int 1236ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1237{ 1238 return (0); 1239} 1240 1241int 1242ctl_port_enable(ctl_port_type port_type) 1243{ 1244 struct ctl_softc *softc; 1245 struct ctl_frontend *fe; 1246 1247 if (ctl_is_single == 0) { 1248 union ctl_ha_msg msg_info; 1249 int isc_retval; 1250 1251#if 0 1252 printf("%s: HA mode, synchronizing frontend enable\n", 1253 __func__); 1254#endif 1255 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1256 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1257 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1258 printf("Sync msg send error retval %d\n", isc_retval); 1259 } 1260 if (!rcv_sync_msg) { 1261 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1262 sizeof(msg_info), 1); 1263 } 1264#if 0 1265 printf("CTL:Frontend Enable\n"); 1266 } else { 1267 printf("%s: single mode, skipping frontend synchronization\n", 1268 __func__); 1269#endif 1270 } 1271 1272 softc = control_softc; 1273 1274 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1275 if (port_type & fe->port_type) 1276 { 1277#if 0 1278 printf("port %d\n", fe->targ_port); 1279#endif 1280 ctl_frontend_online(fe); 1281 } 1282 } 1283 1284 return (0); 1285} 1286 1287int 1288ctl_port_disable(ctl_port_type port_type) 1289{ 1290 struct ctl_softc *softc; 1291 struct ctl_frontend *fe; 1292 1293 softc = control_softc; 1294 1295 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1296 if (port_type & fe->port_type) 1297 ctl_frontend_offline(fe); 1298 } 1299 1300 return (0); 1301} 1302 1303/* 1304 * Returns 0 for success, 1 for failure. 1305 * Currently the only failure mode is if there aren't enough entries 1306 * allocated. So, in case of a failure, look at num_entries_dropped, 1307 * reallocate and try again. 1308 */ 1309int 1310ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1311 int *num_entries_filled, int *num_entries_dropped, 1312 ctl_port_type port_type, int no_virtual) 1313{ 1314 struct ctl_softc *softc; 1315 struct ctl_frontend *fe; 1316 int entries_dropped, entries_filled; 1317 int retval; 1318 int i; 1319 1320 softc = control_softc; 1321 1322 retval = 0; 1323 entries_filled = 0; 1324 entries_dropped = 0; 1325 1326 i = 0; 1327 mtx_lock(&softc->ctl_lock); 1328 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1329 struct ctl_port_entry *entry; 1330 1331 if ((fe->port_type & port_type) == 0) 1332 continue; 1333 1334 if ((no_virtual != 0) 1335 && (fe->virtual_port != 0)) 1336 continue; 1337 1338 if (entries_filled >= num_entries_alloced) { 1339 entries_dropped++; 1340 continue; 1341 } 1342 entry = &entries[i]; 1343 1344 entry->port_type = fe->port_type; 1345 strlcpy(entry->port_name, fe->port_name, 1346 sizeof(entry->port_name)); 1347 entry->physical_port = fe->physical_port; 1348 entry->virtual_port = fe->virtual_port; 1349 entry->wwnn = fe->wwnn; 1350 entry->wwpn = fe->wwpn; 1351 1352 i++; 1353 entries_filled++; 1354 } 1355 1356 mtx_unlock(&softc->ctl_lock); 1357 1358 if (entries_dropped > 0) 1359 retval = 1; 1360 1361 *num_entries_dropped = entries_dropped; 1362 *num_entries_filled = entries_filled; 1363 1364 return (retval); 1365} 1366 1367static void 1368ctl_ioctl_online(void *arg) 1369{ 1370 struct ctl_ioctl_info *ioctl_info; 1371 1372 ioctl_info = (struct ctl_ioctl_info *)arg; 1373 1374 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1375} 1376 1377static void 1378ctl_ioctl_offline(void *arg) 1379{ 1380 struct ctl_ioctl_info *ioctl_info; 1381 1382 ioctl_info = (struct ctl_ioctl_info *)arg; 1383 1384 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1385} 1386 1387/* 1388 * Remove an initiator by port number and initiator ID. 1389 * Returns 0 for success, 1 for failure. 1390 */ 1391int 1392ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1393{ 1394 struct ctl_softc *softc; 1395 1396 softc = control_softc; 1397 1398 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1399 1400 if ((targ_port < 0) 1401 || (targ_port > CTL_MAX_PORTS)) { 1402 printf("%s: invalid port number %d\n", __func__, targ_port); 1403 return (1); 1404 } 1405 if (iid > CTL_MAX_INIT_PER_PORT) { 1406 printf("%s: initiator ID %u > maximun %u!\n", 1407 __func__, iid, CTL_MAX_INIT_PER_PORT); 1408 return (1); 1409 } 1410 1411 mtx_lock(&softc->ctl_lock); 1412 1413 softc->wwpn_iid[targ_port][iid].in_use = 0; 1414 1415 mtx_unlock(&softc->ctl_lock); 1416 1417 return (0); 1418} 1419 1420/* 1421 * Add an initiator to the initiator map. 1422 * Returns 0 for success, 1 for failure. 1423 */ 1424int 1425ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1426{ 1427 struct ctl_softc *softc; 1428 int retval; 1429 1430 softc = control_softc; 1431 1432 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1433 1434 retval = 0; 1435 1436 if ((targ_port < 0) 1437 || (targ_port > CTL_MAX_PORTS)) { 1438 printf("%s: invalid port number %d\n", __func__, targ_port); 1439 return (1); 1440 } 1441 if (iid > CTL_MAX_INIT_PER_PORT) { 1442 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1443 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1444 return (1); 1445 } 1446 1447 mtx_lock(&softc->ctl_lock); 1448 1449 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1450 /* 1451 * We don't treat this as an error. 1452 */ 1453 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1454 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1455 __func__, targ_port, iid, (uintmax_t)wwpn); 1456 goto bailout; 1457 } 1458 1459 /* 1460 * This is an error, but what do we do about it? The 1461 * driver is telling us we have a new WWPN for this 1462 * initiator ID, so we pretty much need to use it. 1463 */ 1464 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1465 "still at that address\n", __func__, targ_port, iid, 1466 (uintmax_t)wwpn, 1467 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1468 1469 /* 1470 * XXX KDM clear have_ca and ua_pending on each LUN for 1471 * this initiator. 1472 */ 1473 } 1474 softc->wwpn_iid[targ_port][iid].in_use = 1; 1475 softc->wwpn_iid[targ_port][iid].iid = iid; 1476 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1477 softc->wwpn_iid[targ_port][iid].port = targ_port; 1478 1479bailout: 1480 1481 mtx_unlock(&softc->ctl_lock); 1482 1483 return (retval); 1484} 1485 1486/* 1487 * XXX KDM should we pretend to do something in the target/lun 1488 * enable/disable functions? 1489 */ 1490static int 1491ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1492{ 1493 return (0); 1494} 1495 1496static int 1497ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1498{ 1499 return (0); 1500} 1501 1502static int 1503ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1504{ 1505 return (0); 1506} 1507 1508static int 1509ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1510{ 1511 return (0); 1512} 1513 1514/* 1515 * Data movement routine for the CTL ioctl frontend port. 1516 */ 1517static int 1518ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1519{ 1520 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1521 struct ctl_sg_entry ext_entry, kern_entry; 1522 int ext_sglen, ext_sg_entries, kern_sg_entries; 1523 int ext_sg_start, ext_offset; 1524 int len_to_copy, len_copied; 1525 int kern_watermark, ext_watermark; 1526 int ext_sglist_malloced; 1527 int i, j; 1528 1529 ext_sglist_malloced = 0; 1530 ext_sg_start = 0; 1531 ext_offset = 0; 1532 1533 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1534 1535 /* 1536 * If this flag is set, fake the data transfer. 1537 */ 1538 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1539 ctsio->ext_data_filled = ctsio->ext_data_len; 1540 goto bailout; 1541 } 1542 1543 /* 1544 * To simplify things here, if we have a single buffer, stick it in 1545 * a S/G entry and just make it a single entry S/G list. 1546 */ 1547 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1548 int len_seen; 1549 1550 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1551 1552 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1553 M_WAITOK); 1554 ext_sglist_malloced = 1; 1555 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1556 ext_sglen) != 0) { 1557 ctl_set_internal_failure(ctsio, 1558 /*sks_valid*/ 0, 1559 /*retry_count*/ 0); 1560 goto bailout; 1561 } 1562 ext_sg_entries = ctsio->ext_sg_entries; 1563 len_seen = 0; 1564 for (i = 0; i < ext_sg_entries; i++) { 1565 if ((len_seen + ext_sglist[i].len) >= 1566 ctsio->ext_data_filled) { 1567 ext_sg_start = i; 1568 ext_offset = ctsio->ext_data_filled - len_seen; 1569 break; 1570 } 1571 len_seen += ext_sglist[i].len; 1572 } 1573 } else { 1574 ext_sglist = &ext_entry; 1575 ext_sglist->addr = ctsio->ext_data_ptr; 1576 ext_sglist->len = ctsio->ext_data_len; 1577 ext_sg_entries = 1; 1578 ext_sg_start = 0; 1579 ext_offset = ctsio->ext_data_filled; 1580 } 1581 1582 if (ctsio->kern_sg_entries > 0) { 1583 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1584 kern_sg_entries = ctsio->kern_sg_entries; 1585 } else { 1586 kern_sglist = &kern_entry; 1587 kern_sglist->addr = ctsio->kern_data_ptr; 1588 kern_sglist->len = ctsio->kern_data_len; 1589 kern_sg_entries = 1; 1590 } 1591 1592 1593 kern_watermark = 0; 1594 ext_watermark = ext_offset; 1595 len_copied = 0; 1596 for (i = ext_sg_start, j = 0; 1597 i < ext_sg_entries && j < kern_sg_entries;) { 1598 uint8_t *ext_ptr, *kern_ptr; 1599 1600 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1601 kern_sglist[j].len - kern_watermark); 1602 1603 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1604 ext_ptr = ext_ptr + ext_watermark; 1605 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1606 /* 1607 * XXX KDM fix this! 1608 */ 1609 panic("need to implement bus address support"); 1610#if 0 1611 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1612#endif 1613 } else 1614 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1615 kern_ptr = kern_ptr + kern_watermark; 1616 1617 kern_watermark += len_to_copy; 1618 ext_watermark += len_to_copy; 1619 1620 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1621 CTL_FLAG_DATA_IN) { 1622 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1623 "bytes to user\n", len_to_copy)); 1624 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1625 "to %p\n", kern_ptr, ext_ptr)); 1626 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1627 ctl_set_internal_failure(ctsio, 1628 /*sks_valid*/ 0, 1629 /*retry_count*/ 0); 1630 goto bailout; 1631 } 1632 } else { 1633 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1634 "bytes from user\n", len_to_copy)); 1635 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1636 "to %p\n", ext_ptr, kern_ptr)); 1637 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1638 ctl_set_internal_failure(ctsio, 1639 /*sks_valid*/ 0, 1640 /*retry_count*/0); 1641 goto bailout; 1642 } 1643 } 1644 1645 len_copied += len_to_copy; 1646 1647 if (ext_sglist[i].len == ext_watermark) { 1648 i++; 1649 ext_watermark = 0; 1650 } 1651 1652 if (kern_sglist[j].len == kern_watermark) { 1653 j++; 1654 kern_watermark = 0; 1655 } 1656 } 1657 1658 ctsio->ext_data_filled += len_copied; 1659 1660 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1661 "kern_sg_entries: %d\n", ext_sg_entries, 1662 kern_sg_entries)); 1663 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1664 "kern_data_len = %d\n", ctsio->ext_data_len, 1665 ctsio->kern_data_len)); 1666 1667 1668 /* XXX KDM set residual?? */ 1669bailout: 1670 1671 if (ext_sglist_malloced != 0) 1672 free(ext_sglist, M_CTL); 1673 1674 return (CTL_RETVAL_COMPLETE); 1675} 1676 1677/* 1678 * Serialize a command that went down the "wrong" side, and so was sent to 1679 * this controller for execution. The logic is a little different than the 1680 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1681 * sent back to the other side, but in the success case, we execute the 1682 * command on this side (XFER mode) or tell the other side to execute it 1683 * (SER_ONLY mode). 1684 */ 1685static int 1686ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock) 1687{ 1688 struct ctl_softc *ctl_softc; 1689 union ctl_ha_msg msg_info; 1690 struct ctl_lun *lun; 1691 int retval = 0; 1692 uint32_t targ_lun; 1693 1694 ctl_softc = control_softc; 1695 if (have_lock == 0) 1696 mtx_lock(&ctl_softc->ctl_lock); 1697 1698 targ_lun = ctsio->io_hdr.nexus.targ_lun; 1699 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 1700 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 1701 lun = ctl_softc->ctl_luns[targ_lun]; 1702 if (lun==NULL) 1703 { 1704 /* 1705 * Why isn't LUN defined? The other side wouldn't 1706 * send a cmd if the LUN is undefined. 1707 */ 1708 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1709 1710 /* "Logical unit not supported" */ 1711 ctl_set_sense_data(&msg_info.scsi.sense_data, 1712 lun, 1713 /*sense_format*/SSD_TYPE_NONE, 1714 /*current_error*/ 1, 1715 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1716 /*asc*/ 0x25, 1717 /*ascq*/ 0x00, 1718 SSD_ELEM_NONE); 1719 1720 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1721 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1722 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1723 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1724 msg_info.hdr.serializing_sc = NULL; 1725 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1726 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1727 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1728 } 1729 if (have_lock == 0) 1730 mtx_unlock(&ctl_softc->ctl_lock); 1731 return(1); 1732 1733 } 1734 1735 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1736 1737 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1738 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1739 ooa_links))) { 1740 case CTL_ACTION_BLOCK: 1741 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1742 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1743 blocked_links); 1744 break; 1745 case CTL_ACTION_PASS: 1746 case CTL_ACTION_SKIP: 1747 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1748 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1749 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 1750 &ctsio->io_hdr, links); 1751 } else { 1752 1753 /* send msg back to other side */ 1754 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1755 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1756 msg_info.hdr.msg_type = CTL_MSG_R2R; 1757#if 0 1758 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1759#endif 1760 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1761 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1762 } 1763 } 1764 break; 1765 case CTL_ACTION_OVERLAP: 1766 /* OVERLAPPED COMMANDS ATTEMPTED */ 1767 ctl_set_sense_data(&msg_info.scsi.sense_data, 1768 lun, 1769 /*sense_format*/SSD_TYPE_NONE, 1770 /*current_error*/ 1, 1771 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1772 /*asc*/ 0x4E, 1773 /*ascq*/ 0x00, 1774 SSD_ELEM_NONE); 1775 1776 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1777 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1778 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1779 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1780 msg_info.hdr.serializing_sc = NULL; 1781 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1782#if 0 1783 printf("BAD JUJU:Major Bummer Overlap\n"); 1784#endif 1785 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1786 retval = 1; 1787 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1788 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1789 } 1790 break; 1791 case CTL_ACTION_OVERLAP_TAG: 1792 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1793 ctl_set_sense_data(&msg_info.scsi.sense_data, 1794 lun, 1795 /*sense_format*/SSD_TYPE_NONE, 1796 /*current_error*/ 1, 1797 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1798 /*asc*/ 0x4D, 1799 /*ascq*/ ctsio->tag_num & 0xff, 1800 SSD_ELEM_NONE); 1801 1802 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1803 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1804 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1805 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1806 msg_info.hdr.serializing_sc = NULL; 1807 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1808#if 0 1809 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1810#endif 1811 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1812 retval = 1; 1813 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1814 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1815 } 1816 break; 1817 case CTL_ACTION_ERROR: 1818 default: 1819 /* "Internal target failure" */ 1820 ctl_set_sense_data(&msg_info.scsi.sense_data, 1821 lun, 1822 /*sense_format*/SSD_TYPE_NONE, 1823 /*current_error*/ 1, 1824 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1825 /*asc*/ 0x44, 1826 /*ascq*/ 0x00, 1827 SSD_ELEM_NONE); 1828 1829 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1830 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1831 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1832 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1833 msg_info.hdr.serializing_sc = NULL; 1834 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1835#if 0 1836 printf("BAD JUJU:Major Bummer HW Error\n"); 1837#endif 1838 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1839 retval = 1; 1840 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1841 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1842 } 1843 break; 1844 } 1845 if (have_lock == 0) 1846 mtx_unlock(&ctl_softc->ctl_lock); 1847 return (retval); 1848} 1849 1850static int 1851ctl_ioctl_submit_wait(union ctl_io *io) 1852{ 1853 struct ctl_fe_ioctl_params params; 1854 ctl_fe_ioctl_state last_state; 1855 int done, retval; 1856 1857 retval = 0; 1858 1859 bzero(¶ms, sizeof(params)); 1860 1861 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1862 cv_init(¶ms.sem, "ctlioccv"); 1863 params.state = CTL_IOCTL_INPROG; 1864 last_state = params.state; 1865 1866 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1867 1868 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1869 1870 /* This shouldn't happen */ 1871 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1872 return (retval); 1873 1874 done = 0; 1875 1876 do { 1877 mtx_lock(¶ms.ioctl_mtx); 1878 /* 1879 * Check the state here, and don't sleep if the state has 1880 * already changed (i.e. wakeup has already occured, but we 1881 * weren't waiting yet). 1882 */ 1883 if (params.state == last_state) { 1884 /* XXX KDM cv_wait_sig instead? */ 1885 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1886 } 1887 last_state = params.state; 1888 1889 switch (params.state) { 1890 case CTL_IOCTL_INPROG: 1891 /* Why did we wake up? */ 1892 /* XXX KDM error here? */ 1893 mtx_unlock(¶ms.ioctl_mtx); 1894 break; 1895 case CTL_IOCTL_DATAMOVE: 1896 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1897 1898 /* 1899 * change last_state back to INPROG to avoid 1900 * deadlock on subsequent data moves. 1901 */ 1902 params.state = last_state = CTL_IOCTL_INPROG; 1903 1904 mtx_unlock(¶ms.ioctl_mtx); 1905 ctl_ioctl_do_datamove(&io->scsiio); 1906 /* 1907 * Note that in some cases, most notably writes, 1908 * this will queue the I/O and call us back later. 1909 * In other cases, generally reads, this routine 1910 * will immediately call back and wake us up, 1911 * probably using our own context. 1912 */ 1913 io->scsiio.be_move_done(io); 1914 break; 1915 case CTL_IOCTL_DONE: 1916 mtx_unlock(¶ms.ioctl_mtx); 1917 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1918 done = 1; 1919 break; 1920 default: 1921 mtx_unlock(¶ms.ioctl_mtx); 1922 /* XXX KDM error here? */ 1923 break; 1924 } 1925 } while (done == 0); 1926 1927 mtx_destroy(¶ms.ioctl_mtx); 1928 cv_destroy(¶ms.sem); 1929 1930 return (CTL_RETVAL_COMPLETE); 1931} 1932 1933static void 1934ctl_ioctl_datamove(union ctl_io *io) 1935{ 1936 struct ctl_fe_ioctl_params *params; 1937 1938 params = (struct ctl_fe_ioctl_params *) 1939 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1940 1941 mtx_lock(¶ms->ioctl_mtx); 1942 params->state = CTL_IOCTL_DATAMOVE; 1943 cv_broadcast(¶ms->sem); 1944 mtx_unlock(¶ms->ioctl_mtx); 1945} 1946 1947static void 1948ctl_ioctl_done(union ctl_io *io) 1949{ 1950 struct ctl_fe_ioctl_params *params; 1951 1952 params = (struct ctl_fe_ioctl_params *) 1953 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1954 1955 mtx_lock(¶ms->ioctl_mtx); 1956 params->state = CTL_IOCTL_DONE; 1957 cv_broadcast(¶ms->sem); 1958 mtx_unlock(¶ms->ioctl_mtx); 1959} 1960 1961static void 1962ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1963{ 1964 struct ctl_fe_ioctl_startstop_info *sd_info; 1965 1966 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1967 1968 sd_info->hs_info.status = metatask->status; 1969 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1970 sd_info->hs_info.luns_complete = 1971 metatask->taskinfo.startstop.luns_complete; 1972 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1973 1974 cv_broadcast(&sd_info->sem); 1975} 1976 1977static void 1978ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1979{ 1980 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1981 1982 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1983 1984 mtx_lock(fe_bbr_info->lock); 1985 fe_bbr_info->bbr_info->status = metatask->status; 1986 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1987 fe_bbr_info->wakeup_done = 1; 1988 mtx_unlock(fe_bbr_info->lock); 1989 1990 cv_broadcast(&fe_bbr_info->sem); 1991} 1992 1993/* 1994 * Returns 0 for success, errno for failure. 1995 */ 1996static int 1997ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1998 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1999{ 2000 union ctl_io *io; 2001 int retval; 2002 2003 retval = 0; 2004 2005 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 2006 2007 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 2008 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2009 ooa_links)) { 2010 struct ctl_ooa_entry *entry; 2011 2012 /* 2013 * If we've got more than we can fit, just count the 2014 * remaining entries. 2015 */ 2016 if (*cur_fill_num >= ooa_hdr->alloc_num) 2017 continue; 2018 2019 entry = &kern_entries[*cur_fill_num]; 2020 2021 entry->tag_num = io->scsiio.tag_num; 2022 entry->lun_num = lun->lun; 2023#ifdef CTL_TIME_IO 2024 entry->start_bt = io->io_hdr.start_bt; 2025#endif 2026 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 2027 entry->cdb_len = io->scsiio.cdb_len; 2028 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 2029 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 2030 2031 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 2032 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 2033 2034 if (io->io_hdr.flags & CTL_FLAG_ABORT) 2035 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 2036 2037 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 2038 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 2039 2040 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 2041 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 2042 } 2043 2044 return (retval); 2045} 2046 2047static void * 2048ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2049 size_t error_str_len) 2050{ 2051 void *kptr; 2052 2053 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2054 2055 if (copyin(user_addr, kptr, len) != 0) { 2056 snprintf(error_str, error_str_len, "Error copying %d bytes " 2057 "from user address %p to kernel address %p", len, 2058 user_addr, kptr); 2059 free(kptr, M_CTL); 2060 return (NULL); 2061 } 2062 2063 return (kptr); 2064} 2065 2066static void 2067ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2068{ 2069 int i; 2070 2071 if (be_args == NULL) 2072 return; 2073 2074 for (i = 0; i < num_be_args; i++) { 2075 free(be_args[i].kname, M_CTL); 2076 free(be_args[i].kvalue, M_CTL); 2077 } 2078 2079 free(be_args, M_CTL); 2080} 2081 2082static struct ctl_be_arg * 2083ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2084 char *error_str, size_t error_str_len) 2085{ 2086 struct ctl_be_arg *args; 2087 int i; 2088 2089 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2090 error_str, error_str_len); 2091 2092 if (args == NULL) 2093 goto bailout; 2094 2095 for (i = 0; i < num_be_args; i++) { 2096 args[i].kname = NULL; 2097 args[i].kvalue = NULL; 2098 } 2099 2100 for (i = 0; i < num_be_args; i++) { 2101 uint8_t *tmpptr; 2102 2103 args[i].kname = ctl_copyin_alloc(args[i].name, 2104 args[i].namelen, error_str, error_str_len); 2105 if (args[i].kname == NULL) 2106 goto bailout; 2107 2108 if (args[i].kname[args[i].namelen - 1] != '\0') { 2109 snprintf(error_str, error_str_len, "Argument %d " 2110 "name is not NUL-terminated", i); 2111 goto bailout; 2112 } 2113 2114 args[i].kvalue = NULL; 2115 2116 tmpptr = ctl_copyin_alloc(args[i].value, 2117 args[i].vallen, error_str, error_str_len); 2118 if (tmpptr == NULL) 2119 goto bailout; 2120 2121 args[i].kvalue = tmpptr; 2122 2123 if ((args[i].flags & CTL_BEARG_ASCII) 2124 && (tmpptr[args[i].vallen - 1] != '\0')) { 2125 snprintf(error_str, error_str_len, "Argument %d " 2126 "value is not NUL-terminated", i); 2127 goto bailout; 2128 } 2129 } 2130 2131 return (args); 2132bailout: 2133 2134 ctl_free_args(num_be_args, args); 2135 2136 return (NULL); 2137} 2138 2139/* 2140 * Escape characters that are illegal or not recommended in XML. 2141 */ 2142int 2143ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2144{ 2145 int retval; 2146 2147 retval = 0; 2148 2149 for (; *str; str++) { 2150 switch (*str) { 2151 case '&': 2152 retval = sbuf_printf(sb, "&"); 2153 break; 2154 case '>': 2155 retval = sbuf_printf(sb, ">"); 2156 break; 2157 case '<': 2158 retval = sbuf_printf(sb, "<"); 2159 break; 2160 default: 2161 retval = sbuf_putc(sb, *str); 2162 break; 2163 } 2164 2165 if (retval != 0) 2166 break; 2167 2168 } 2169 2170 return (retval); 2171} 2172 2173static int 2174ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2175 struct thread *td) 2176{ 2177 struct ctl_softc *softc; 2178 int retval; 2179 2180 softc = control_softc; 2181 2182 retval = 0; 2183 2184 switch (cmd) { 2185 case CTL_IO: { 2186 union ctl_io *io; 2187 void *pool_tmp; 2188 2189 /* 2190 * If we haven't been "enabled", don't allow any SCSI I/O 2191 * to this FETD. 2192 */ 2193 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2194 retval = -EPERM; 2195 break; 2196 } 2197 2198 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2199 if (io == NULL) { 2200 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2201 retval = -ENOSPC; 2202 break; 2203 } 2204 2205 /* 2206 * Need to save the pool reference so it doesn't get 2207 * spammed by the user's ctl_io. 2208 */ 2209 pool_tmp = io->io_hdr.pool; 2210 2211 memcpy(io, (void *)addr, sizeof(*io)); 2212 2213 io->io_hdr.pool = pool_tmp; 2214 /* 2215 * No status yet, so make sure the status is set properly. 2216 */ 2217 io->io_hdr.status = CTL_STATUS_NONE; 2218 2219 /* 2220 * The user sets the initiator ID, target and LUN IDs. 2221 */ 2222 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2223 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2224 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2225 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2226 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2227 2228 retval = ctl_ioctl_submit_wait(io); 2229 2230 if (retval != 0) { 2231 ctl_free_io(io); 2232 break; 2233 } 2234 2235 memcpy((void *)addr, io, sizeof(*io)); 2236 2237 /* return this to our pool */ 2238 ctl_free_io(io); 2239 2240 break; 2241 } 2242 case CTL_ENABLE_PORT: 2243 case CTL_DISABLE_PORT: 2244 case CTL_SET_PORT_WWNS: { 2245 struct ctl_frontend *fe; 2246 struct ctl_port_entry *entry; 2247 2248 entry = (struct ctl_port_entry *)addr; 2249 2250 mtx_lock(&softc->ctl_lock); 2251 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2252 int action, done; 2253 2254 action = 0; 2255 done = 0; 2256 2257 if ((entry->port_type == CTL_PORT_NONE) 2258 && (entry->targ_port == fe->targ_port)) { 2259 /* 2260 * If the user only wants to enable or 2261 * disable or set WWNs on a specific port, 2262 * do the operation and we're done. 2263 */ 2264 action = 1; 2265 done = 1; 2266 } else if (entry->port_type & fe->port_type) { 2267 /* 2268 * Compare the user's type mask with the 2269 * particular frontend type to see if we 2270 * have a match. 2271 */ 2272 action = 1; 2273 done = 0; 2274 2275 /* 2276 * Make sure the user isn't trying to set 2277 * WWNs on multiple ports at the same time. 2278 */ 2279 if (cmd == CTL_SET_PORT_WWNS) { 2280 printf("%s: Can't set WWNs on " 2281 "multiple ports\n", __func__); 2282 retval = EINVAL; 2283 break; 2284 } 2285 } 2286 if (action != 0) { 2287 /* 2288 * XXX KDM we have to drop the lock here, 2289 * because the online/offline operations 2290 * can potentially block. We need to 2291 * reference count the frontends so they 2292 * can't go away, 2293 */ 2294 mtx_unlock(&softc->ctl_lock); 2295 2296 if (cmd == CTL_ENABLE_PORT) { 2297 struct ctl_lun *lun; 2298 2299 STAILQ_FOREACH(lun, &softc->lun_list, 2300 links) { 2301 fe->lun_enable(fe->targ_lun_arg, 2302 lun->target, 2303 lun->lun); 2304 } 2305 2306 ctl_frontend_online(fe); 2307 } else if (cmd == CTL_DISABLE_PORT) { 2308 struct ctl_lun *lun; 2309 2310 ctl_frontend_offline(fe); 2311 2312 STAILQ_FOREACH(lun, &softc->lun_list, 2313 links) { 2314 fe->lun_disable( 2315 fe->targ_lun_arg, 2316 lun->target, 2317 lun->lun); 2318 } 2319 } 2320 2321 mtx_lock(&softc->ctl_lock); 2322 2323 if (cmd == CTL_SET_PORT_WWNS) 2324 ctl_frontend_set_wwns(fe, 2325 (entry->flags & CTL_PORT_WWNN_VALID) ? 2326 1 : 0, entry->wwnn, 2327 (entry->flags & CTL_PORT_WWPN_VALID) ? 2328 1 : 0, entry->wwpn); 2329 } 2330 if (done != 0) 2331 break; 2332 } 2333 mtx_unlock(&softc->ctl_lock); 2334 break; 2335 } 2336 case CTL_GET_PORT_LIST: { 2337 struct ctl_frontend *fe; 2338 struct ctl_port_list *list; 2339 int i; 2340 2341 list = (struct ctl_port_list *)addr; 2342 2343 if (list->alloc_len != (list->alloc_num * 2344 sizeof(struct ctl_port_entry))) { 2345 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2346 "alloc_num %u * sizeof(struct ctl_port_entry) " 2347 "%zu\n", __func__, list->alloc_len, 2348 list->alloc_num, sizeof(struct ctl_port_entry)); 2349 retval = EINVAL; 2350 break; 2351 } 2352 list->fill_len = 0; 2353 list->fill_num = 0; 2354 list->dropped_num = 0; 2355 i = 0; 2356 mtx_lock(&softc->ctl_lock); 2357 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2358 struct ctl_port_entry entry, *list_entry; 2359 2360 if (list->fill_num >= list->alloc_num) { 2361 list->dropped_num++; 2362 continue; 2363 } 2364 2365 entry.port_type = fe->port_type; 2366 strlcpy(entry.port_name, fe->port_name, 2367 sizeof(entry.port_name)); 2368 entry.targ_port = fe->targ_port; 2369 entry.physical_port = fe->physical_port; 2370 entry.virtual_port = fe->virtual_port; 2371 entry.wwnn = fe->wwnn; 2372 entry.wwpn = fe->wwpn; 2373 if (fe->status & CTL_PORT_STATUS_ONLINE) 2374 entry.online = 1; 2375 else 2376 entry.online = 0; 2377 2378 list_entry = &list->entries[i]; 2379 2380 retval = copyout(&entry, list_entry, sizeof(entry)); 2381 if (retval != 0) { 2382 printf("%s: CTL_GET_PORT_LIST: copyout " 2383 "returned %d\n", __func__, retval); 2384 break; 2385 } 2386 i++; 2387 list->fill_num++; 2388 list->fill_len += sizeof(entry); 2389 } 2390 mtx_unlock(&softc->ctl_lock); 2391 2392 /* 2393 * If this is non-zero, we had a copyout fault, so there's 2394 * probably no point in attempting to set the status inside 2395 * the structure. 2396 */ 2397 if (retval != 0) 2398 break; 2399 2400 if (list->dropped_num > 0) 2401 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2402 else 2403 list->status = CTL_PORT_LIST_OK; 2404 break; 2405 } 2406 case CTL_DUMP_OOA: { 2407 struct ctl_lun *lun; 2408 union ctl_io *io; 2409 char printbuf[128]; 2410 struct sbuf sb; 2411 2412 mtx_lock(&softc->ctl_lock); 2413 printf("Dumping OOA queues:\n"); 2414 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2415 for (io = (union ctl_io *)TAILQ_FIRST( 2416 &lun->ooa_queue); io != NULL; 2417 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2418 ooa_links)) { 2419 sbuf_new(&sb, printbuf, sizeof(printbuf), 2420 SBUF_FIXEDLEN); 2421 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2422 (intmax_t)lun->lun, 2423 io->scsiio.tag_num, 2424 (io->io_hdr.flags & 2425 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2426 (io->io_hdr.flags & 2427 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2428 (io->io_hdr.flags & 2429 CTL_FLAG_ABORT) ? " ABORT" : "", 2430 (io->io_hdr.flags & 2431 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2432 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2433 sbuf_finish(&sb); 2434 printf("%s\n", sbuf_data(&sb)); 2435 } 2436 } 2437 printf("OOA queues dump done\n"); 2438 mtx_unlock(&softc->ctl_lock); 2439 break; 2440 } 2441 case CTL_GET_OOA: { 2442 struct ctl_lun *lun; 2443 struct ctl_ooa *ooa_hdr; 2444 struct ctl_ooa_entry *entries; 2445 uint32_t cur_fill_num; 2446 2447 ooa_hdr = (struct ctl_ooa *)addr; 2448 2449 if ((ooa_hdr->alloc_len == 0) 2450 || (ooa_hdr->alloc_num == 0)) { 2451 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2452 "must be non-zero\n", __func__, 2453 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2454 retval = EINVAL; 2455 break; 2456 } 2457 2458 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2459 sizeof(struct ctl_ooa_entry))) { 2460 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2461 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2462 __func__, ooa_hdr->alloc_len, 2463 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2464 retval = EINVAL; 2465 break; 2466 } 2467 2468 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2469 if (entries == NULL) { 2470 printf("%s: could not allocate %d bytes for OOA " 2471 "dump\n", __func__, ooa_hdr->alloc_len); 2472 retval = ENOMEM; 2473 break; 2474 } 2475 2476 mtx_lock(&softc->ctl_lock); 2477 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2478 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2479 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2480 mtx_unlock(&softc->ctl_lock); 2481 free(entries, M_CTL); 2482 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2483 __func__, (uintmax_t)ooa_hdr->lun_num); 2484 retval = EINVAL; 2485 break; 2486 } 2487 2488 cur_fill_num = 0; 2489 2490 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2491 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2492 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2493 ooa_hdr, entries); 2494 if (retval != 0) 2495 break; 2496 } 2497 if (retval != 0) { 2498 mtx_unlock(&softc->ctl_lock); 2499 free(entries, M_CTL); 2500 break; 2501 } 2502 } else { 2503 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2504 2505 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2506 entries); 2507 } 2508 mtx_unlock(&softc->ctl_lock); 2509 2510 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2511 ooa_hdr->fill_len = ooa_hdr->fill_num * 2512 sizeof(struct ctl_ooa_entry); 2513 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2514 if (retval != 0) { 2515 printf("%s: error copying out %d bytes for OOA dump\n", 2516 __func__, ooa_hdr->fill_len); 2517 } 2518 2519 getbintime(&ooa_hdr->cur_bt); 2520 2521 if (cur_fill_num > ooa_hdr->alloc_num) { 2522 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2523 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2524 } else { 2525 ooa_hdr->dropped_num = 0; 2526 ooa_hdr->status = CTL_OOA_OK; 2527 } 2528 2529 free(entries, M_CTL); 2530 break; 2531 } 2532 case CTL_CHECK_OOA: { 2533 union ctl_io *io; 2534 struct ctl_lun *lun; 2535 struct ctl_ooa_info *ooa_info; 2536 2537 2538 ooa_info = (struct ctl_ooa_info *)addr; 2539 2540 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2541 ooa_info->status = CTL_OOA_INVALID_LUN; 2542 break; 2543 } 2544 mtx_lock(&softc->ctl_lock); 2545 lun = softc->ctl_luns[ooa_info->lun_id]; 2546 if (lun == NULL) { 2547 mtx_unlock(&softc->ctl_lock); 2548 ooa_info->status = CTL_OOA_INVALID_LUN; 2549 break; 2550 } 2551 2552 ooa_info->num_entries = 0; 2553 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2554 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2555 &io->io_hdr, ooa_links)) { 2556 ooa_info->num_entries++; 2557 } 2558 2559 mtx_unlock(&softc->ctl_lock); 2560 ooa_info->status = CTL_OOA_SUCCESS; 2561 2562 break; 2563 } 2564 case CTL_HARD_START: 2565 case CTL_HARD_STOP: { 2566 struct ctl_fe_ioctl_startstop_info ss_info; 2567 struct cfi_metatask *metatask; 2568 struct mtx hs_mtx; 2569 2570 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2571 2572 cv_init(&ss_info.sem, "hard start/stop cv" ); 2573 2574 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2575 if (metatask == NULL) { 2576 retval = ENOMEM; 2577 mtx_destroy(&hs_mtx); 2578 break; 2579 } 2580 2581 if (cmd == CTL_HARD_START) 2582 metatask->tasktype = CFI_TASK_STARTUP; 2583 else 2584 metatask->tasktype = CFI_TASK_SHUTDOWN; 2585 2586 metatask->callback = ctl_ioctl_hard_startstop_callback; 2587 metatask->callback_arg = &ss_info; 2588 2589 cfi_action(metatask); 2590 2591 /* Wait for the callback */ 2592 mtx_lock(&hs_mtx); 2593 cv_wait_sig(&ss_info.sem, &hs_mtx); 2594 mtx_unlock(&hs_mtx); 2595 2596 /* 2597 * All information has been copied from the metatask by the 2598 * time cv_broadcast() is called, so we free the metatask here. 2599 */ 2600 cfi_free_metatask(metatask); 2601 2602 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2603 2604 mtx_destroy(&hs_mtx); 2605 break; 2606 } 2607 case CTL_BBRREAD: { 2608 struct ctl_bbrread_info *bbr_info; 2609 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2610 struct mtx bbr_mtx; 2611 struct cfi_metatask *metatask; 2612 2613 bbr_info = (struct ctl_bbrread_info *)addr; 2614 2615 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2616 2617 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2618 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2619 2620 fe_bbr_info.bbr_info = bbr_info; 2621 fe_bbr_info.lock = &bbr_mtx; 2622 2623 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2624 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2625 2626 if (metatask == NULL) { 2627 mtx_destroy(&bbr_mtx); 2628 cv_destroy(&fe_bbr_info.sem); 2629 retval = ENOMEM; 2630 break; 2631 } 2632 metatask->tasktype = CFI_TASK_BBRREAD; 2633 metatask->callback = ctl_ioctl_bbrread_callback; 2634 metatask->callback_arg = &fe_bbr_info; 2635 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2636 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2637 metatask->taskinfo.bbrread.len = bbr_info->len; 2638 2639 cfi_action(metatask); 2640 2641 mtx_lock(&bbr_mtx); 2642 while (fe_bbr_info.wakeup_done == 0) 2643 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2644 mtx_unlock(&bbr_mtx); 2645 2646 bbr_info->status = metatask->status; 2647 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2648 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2649 memcpy(&bbr_info->sense_data, 2650 &metatask->taskinfo.bbrread.sense_data, 2651 ctl_min(sizeof(bbr_info->sense_data), 2652 sizeof(metatask->taskinfo.bbrread.sense_data))); 2653 2654 cfi_free_metatask(metatask); 2655 2656 mtx_destroy(&bbr_mtx); 2657 cv_destroy(&fe_bbr_info.sem); 2658 2659 break; 2660 } 2661 case CTL_DELAY_IO: { 2662 struct ctl_io_delay_info *delay_info; 2663#ifdef CTL_IO_DELAY 2664 struct ctl_lun *lun; 2665#endif /* CTL_IO_DELAY */ 2666 2667 delay_info = (struct ctl_io_delay_info *)addr; 2668 2669#ifdef CTL_IO_DELAY 2670 mtx_lock(&softc->ctl_lock); 2671 2672 if ((delay_info->lun_id > CTL_MAX_LUNS) 2673 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2674 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2675 } else { 2676 lun = softc->ctl_luns[delay_info->lun_id]; 2677 2678 delay_info->status = CTL_DELAY_STATUS_OK; 2679 2680 switch (delay_info->delay_type) { 2681 case CTL_DELAY_TYPE_CONT: 2682 break; 2683 case CTL_DELAY_TYPE_ONESHOT: 2684 break; 2685 default: 2686 delay_info->status = 2687 CTL_DELAY_STATUS_INVALID_TYPE; 2688 break; 2689 } 2690 2691 switch (delay_info->delay_loc) { 2692 case CTL_DELAY_LOC_DATAMOVE: 2693 lun->delay_info.datamove_type = 2694 delay_info->delay_type; 2695 lun->delay_info.datamove_delay = 2696 delay_info->delay_secs; 2697 break; 2698 case CTL_DELAY_LOC_DONE: 2699 lun->delay_info.done_type = 2700 delay_info->delay_type; 2701 lun->delay_info.done_delay = 2702 delay_info->delay_secs; 2703 break; 2704 default: 2705 delay_info->status = 2706 CTL_DELAY_STATUS_INVALID_LOC; 2707 break; 2708 } 2709 } 2710 2711 mtx_unlock(&softc->ctl_lock); 2712#else 2713 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2714#endif /* CTL_IO_DELAY */ 2715 break; 2716 } 2717 case CTL_REALSYNC_SET: { 2718 int *syncstate; 2719 2720 syncstate = (int *)addr; 2721 2722 mtx_lock(&softc->ctl_lock); 2723 switch (*syncstate) { 2724 case 0: 2725 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2726 break; 2727 case 1: 2728 softc->flags |= CTL_FLAG_REAL_SYNC; 2729 break; 2730 default: 2731 retval = -EINVAL; 2732 break; 2733 } 2734 mtx_unlock(&softc->ctl_lock); 2735 break; 2736 } 2737 case CTL_REALSYNC_GET: { 2738 int *syncstate; 2739 2740 syncstate = (int*)addr; 2741 2742 mtx_lock(&softc->ctl_lock); 2743 if (softc->flags & CTL_FLAG_REAL_SYNC) 2744 *syncstate = 1; 2745 else 2746 *syncstate = 0; 2747 mtx_unlock(&softc->ctl_lock); 2748 2749 break; 2750 } 2751 case CTL_SETSYNC: 2752 case CTL_GETSYNC: { 2753 struct ctl_sync_info *sync_info; 2754 struct ctl_lun *lun; 2755 2756 sync_info = (struct ctl_sync_info *)addr; 2757 2758 mtx_lock(&softc->ctl_lock); 2759 lun = softc->ctl_luns[sync_info->lun_id]; 2760 if (lun == NULL) { 2761 mtx_unlock(&softc->ctl_lock); 2762 sync_info->status = CTL_GS_SYNC_NO_LUN; 2763 } 2764 /* 2765 * Get or set the sync interval. We're not bounds checking 2766 * in the set case, hopefully the user won't do something 2767 * silly. 2768 */ 2769 if (cmd == CTL_GETSYNC) 2770 sync_info->sync_interval = lun->sync_interval; 2771 else 2772 lun->sync_interval = sync_info->sync_interval; 2773 2774 mtx_unlock(&softc->ctl_lock); 2775 2776 sync_info->status = CTL_GS_SYNC_OK; 2777 2778 break; 2779 } 2780 case CTL_GETSTATS: { 2781 struct ctl_stats *stats; 2782 struct ctl_lun *lun; 2783 int i; 2784 2785 stats = (struct ctl_stats *)addr; 2786 2787 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2788 stats->alloc_len) { 2789 stats->status = CTL_SS_NEED_MORE_SPACE; 2790 stats->num_luns = softc->num_luns; 2791 break; 2792 } 2793 /* 2794 * XXX KDM no locking here. If the LUN list changes, 2795 * things can blow up. 2796 */ 2797 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2798 i++, lun = STAILQ_NEXT(lun, links)) { 2799 retval = copyout(&lun->stats, &stats->lun_stats[i], 2800 sizeof(lun->stats)); 2801 if (retval != 0) 2802 break; 2803 } 2804 stats->num_luns = softc->num_luns; 2805 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2806 softc->num_luns; 2807 stats->status = CTL_SS_OK; 2808#ifdef CTL_TIME_IO 2809 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2810#else 2811 stats->flags = CTL_STATS_FLAG_NONE; 2812#endif 2813 getnanouptime(&stats->timestamp); 2814 break; 2815 } 2816 case CTL_ERROR_INJECT: { 2817 struct ctl_error_desc *err_desc, *new_err_desc; 2818 struct ctl_lun *lun; 2819 2820 err_desc = (struct ctl_error_desc *)addr; 2821 2822 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2823 M_WAITOK | M_ZERO); 2824 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2825 2826 mtx_lock(&softc->ctl_lock); 2827 lun = softc->ctl_luns[err_desc->lun_id]; 2828 if (lun == NULL) { 2829 mtx_unlock(&softc->ctl_lock); 2830 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2831 __func__, (uintmax_t)err_desc->lun_id); 2832 retval = EINVAL; 2833 break; 2834 } 2835 2836 /* 2837 * We could do some checking here to verify the validity 2838 * of the request, but given the complexity of error 2839 * injection requests, the checking logic would be fairly 2840 * complex. 2841 * 2842 * For now, if the request is invalid, it just won't get 2843 * executed and might get deleted. 2844 */ 2845 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2846 2847 /* 2848 * XXX KDM check to make sure the serial number is unique, 2849 * in case we somehow manage to wrap. That shouldn't 2850 * happen for a very long time, but it's the right thing to 2851 * do. 2852 */ 2853 new_err_desc->serial = lun->error_serial; 2854 err_desc->serial = lun->error_serial; 2855 lun->error_serial++; 2856 2857 mtx_unlock(&softc->ctl_lock); 2858 break; 2859 } 2860 case CTL_ERROR_INJECT_DELETE: { 2861 struct ctl_error_desc *delete_desc, *desc, *desc2; 2862 struct ctl_lun *lun; 2863 int delete_done; 2864 2865 delete_desc = (struct ctl_error_desc *)addr; 2866 delete_done = 0; 2867 2868 mtx_lock(&softc->ctl_lock); 2869 lun = softc->ctl_luns[delete_desc->lun_id]; 2870 if (lun == NULL) { 2871 mtx_unlock(&softc->ctl_lock); 2872 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2873 __func__, (uintmax_t)delete_desc->lun_id); 2874 retval = EINVAL; 2875 break; 2876 } 2877 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2878 if (desc->serial != delete_desc->serial) 2879 continue; 2880 2881 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2882 links); 2883 free(desc, M_CTL); 2884 delete_done = 1; 2885 } 2886 mtx_unlock(&softc->ctl_lock); 2887 if (delete_done == 0) { 2888 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2889 "error serial %ju on LUN %u\n", __func__, 2890 delete_desc->serial, delete_desc->lun_id); 2891 retval = EINVAL; 2892 break; 2893 } 2894 break; 2895 } 2896 case CTL_DUMP_STRUCTS: { 2897 int i, j, k; 2898 struct ctl_frontend *fe; 2899 2900 printf("CTL IID to WWPN map start:\n"); 2901 for (i = 0; i < CTL_MAX_PORTS; i++) { 2902 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2903 if (softc->wwpn_iid[i][j].in_use == 0) 2904 continue; 2905 2906 printf("port %d iid %u WWPN %#jx\n", 2907 softc->wwpn_iid[i][j].port, 2908 softc->wwpn_iid[i][j].iid, 2909 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2910 } 2911 } 2912 printf("CTL IID to WWPN map end\n"); 2913 printf("CTL Persistent Reservation information start:\n"); 2914 for (i = 0; i < CTL_MAX_LUNS; i++) { 2915 struct ctl_lun *lun; 2916 2917 lun = softc->ctl_luns[i]; 2918 2919 if ((lun == NULL) 2920 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2921 continue; 2922 2923 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2924 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2925 if (lun->per_res[j+k].registered == 0) 2926 continue; 2927 printf("LUN %d port %d iid %d key " 2928 "%#jx\n", i, j, k, 2929 (uintmax_t)scsi_8btou64( 2930 lun->per_res[j+k].res_key.key)); 2931 } 2932 } 2933 } 2934 printf("CTL Persistent Reservation information end\n"); 2935 printf("CTL Frontends:\n"); 2936 /* 2937 * XXX KDM calling this without a lock. We'd likely want 2938 * to drop the lock before calling the frontend's dump 2939 * routine anyway. 2940 */ 2941 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2942 printf("Frontend %s Type %u pport %d vport %d WWNN " 2943 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2944 fe->physical_port, fe->virtual_port, 2945 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2946 2947 /* 2948 * Frontends are not required to support the dump 2949 * routine. 2950 */ 2951 if (fe->fe_dump == NULL) 2952 continue; 2953 2954 fe->fe_dump(); 2955 } 2956 printf("CTL Frontend information end\n"); 2957 break; 2958 } 2959 case CTL_LUN_REQ: { 2960 struct ctl_lun_req *lun_req; 2961 struct ctl_backend_driver *backend; 2962 2963 lun_req = (struct ctl_lun_req *)addr; 2964 2965 backend = ctl_backend_find(lun_req->backend); 2966 if (backend == NULL) { 2967 lun_req->status = CTL_LUN_ERROR; 2968 snprintf(lun_req->error_str, 2969 sizeof(lun_req->error_str), 2970 "Backend \"%s\" not found.", 2971 lun_req->backend); 2972 break; 2973 } 2974 if (lun_req->num_be_args > 0) { 2975 lun_req->kern_be_args = ctl_copyin_args( 2976 lun_req->num_be_args, 2977 lun_req->be_args, 2978 lun_req->error_str, 2979 sizeof(lun_req->error_str)); 2980 if (lun_req->kern_be_args == NULL) { 2981 lun_req->status = CTL_LUN_ERROR; 2982 break; 2983 } 2984 } 2985 2986 retval = backend->ioctl(dev, cmd, addr, flag, td); 2987 2988 if (lun_req->num_be_args > 0) { 2989 ctl_free_args(lun_req->num_be_args, 2990 lun_req->kern_be_args); 2991 } 2992 break; 2993 } 2994 case CTL_LUN_LIST: { 2995 struct sbuf *sb; 2996 struct ctl_lun *lun; 2997 struct ctl_lun_list *list; 2998 struct ctl_be_lun_option *opt; 2999 3000 list = (struct ctl_lun_list *)addr; 3001 3002 /* 3003 * Allocate a fixed length sbuf here, based on the length 3004 * of the user's buffer. We could allocate an auto-extending 3005 * buffer, and then tell the user how much larger our 3006 * amount of data is than his buffer, but that presents 3007 * some problems: 3008 * 3009 * 1. The sbuf(9) routines use a blocking malloc, and so 3010 * we can't hold a lock while calling them with an 3011 * auto-extending buffer. 3012 * 3013 * 2. There is not currently a LUN reference counting 3014 * mechanism, outside of outstanding transactions on 3015 * the LUN's OOA queue. So a LUN could go away on us 3016 * while we're getting the LUN number, backend-specific 3017 * information, etc. Thus, given the way things 3018 * currently work, we need to hold the CTL lock while 3019 * grabbing LUN information. 3020 * 3021 * So, from the user's standpoint, the best thing to do is 3022 * allocate what he thinks is a reasonable buffer length, 3023 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 3024 * double the buffer length and try again. (And repeat 3025 * that until he succeeds.) 3026 */ 3027 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3028 if (sb == NULL) { 3029 list->status = CTL_LUN_LIST_ERROR; 3030 snprintf(list->error_str, sizeof(list->error_str), 3031 "Unable to allocate %d bytes for LUN list", 3032 list->alloc_len); 3033 break; 3034 } 3035 3036 sbuf_printf(sb, "<ctllunlist>\n"); 3037 3038 mtx_lock(&softc->ctl_lock); 3039 3040 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3041 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3042 (uintmax_t)lun->lun); 3043 3044 /* 3045 * Bail out as soon as we see that we've overfilled 3046 * the buffer. 3047 */ 3048 if (retval != 0) 3049 break; 3050 3051 retval = sbuf_printf(sb, "<backend_type>%s" 3052 "</backend_type>\n", 3053 (lun->backend == NULL) ? "none" : 3054 lun->backend->name); 3055 3056 if (retval != 0) 3057 break; 3058 3059 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 3060 lun->be_lun->lun_type); 3061 3062 if (retval != 0) 3063 break; 3064 3065 if (lun->backend == NULL) { 3066 retval = sbuf_printf(sb, "</lun>\n"); 3067 if (retval != 0) 3068 break; 3069 continue; 3070 } 3071 3072 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3073 (lun->be_lun->maxlba > 0) ? 3074 lun->be_lun->maxlba + 1 : 0); 3075 3076 if (retval != 0) 3077 break; 3078 3079 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3080 lun->be_lun->blocksize); 3081 3082 if (retval != 0) 3083 break; 3084 3085 retval = sbuf_printf(sb, "<serial_number>"); 3086 3087 if (retval != 0) 3088 break; 3089 3090 retval = ctl_sbuf_printf_esc(sb, 3091 lun->be_lun->serial_num); 3092 3093 if (retval != 0) 3094 break; 3095 3096 retval = sbuf_printf(sb, "</serial_number>\n"); 3097 3098 if (retval != 0) 3099 break; 3100 3101 retval = sbuf_printf(sb, "<device_id>"); 3102 3103 if (retval != 0) 3104 break; 3105 3106 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3107 3108 if (retval != 0) 3109 break; 3110 3111 retval = sbuf_printf(sb, "</device_id>\n"); 3112 3113 if (retval != 0) 3114 break; 3115 3116 if (lun->backend->lun_info != NULL) { 3117 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3118 if (retval != 0) 3119 break; 3120 } 3121 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3122 retval = sbuf_printf(sb, "<%s>%s</%s>", opt->name, opt->value, opt->name); 3123 if (retval != 0) 3124 break; 3125 } 3126 3127 retval = sbuf_printf(sb, "</lun>\n"); 3128 3129 if (retval != 0) 3130 break; 3131 } 3132 mtx_unlock(&softc->ctl_lock); 3133 3134 if ((retval != 0) 3135 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3136 retval = 0; 3137 sbuf_delete(sb); 3138 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3139 snprintf(list->error_str, sizeof(list->error_str), 3140 "Out of space, %d bytes is too small", 3141 list->alloc_len); 3142 break; 3143 } 3144 3145 sbuf_finish(sb); 3146 3147 retval = copyout(sbuf_data(sb), list->lun_xml, 3148 sbuf_len(sb) + 1); 3149 3150 list->fill_len = sbuf_len(sb) + 1; 3151 list->status = CTL_LUN_LIST_OK; 3152 sbuf_delete(sb); 3153 break; 3154 } 3155 case CTL_ISCSI: { 3156 struct ctl_iscsi *ci; 3157 struct ctl_frontend *fe; 3158 3159 ci = (struct ctl_iscsi *)addr; 3160 3161 mtx_lock(&softc->ctl_lock); 3162 STAILQ_FOREACH(fe, &softc->fe_list, links) { 3163 if (strcmp(fe->port_name, "iscsi") == 0) 3164 break; 3165 } 3166 mtx_unlock(&softc->ctl_lock); 3167 3168 if (fe == NULL) { 3169 ci->status = CTL_ISCSI_ERROR; 3170 snprintf(ci->error_str, sizeof(ci->error_str), "Backend \"iscsi\" not found."); 3171 break; 3172 } 3173 3174 retval = fe->ioctl(dev, cmd, addr, flag, td); 3175 break; 3176 } 3177 default: { 3178 /* XXX KDM should we fix this? */ 3179#if 0 3180 struct ctl_backend_driver *backend; 3181 unsigned int type; 3182 int found; 3183 3184 found = 0; 3185 3186 /* 3187 * We encode the backend type as the ioctl type for backend 3188 * ioctls. So parse it out here, and then search for a 3189 * backend of this type. 3190 */ 3191 type = _IOC_TYPE(cmd); 3192 3193 STAILQ_FOREACH(backend, &softc->be_list, links) { 3194 if (backend->type == type) { 3195 found = 1; 3196 break; 3197 } 3198 } 3199 if (found == 0) { 3200 printf("ctl: unknown ioctl command %#lx or backend " 3201 "%d\n", cmd, type); 3202 retval = -EINVAL; 3203 break; 3204 } 3205 retval = backend->ioctl(dev, cmd, addr, flag, td); 3206#endif 3207 retval = ENOTTY; 3208 break; 3209 } 3210 } 3211 return (retval); 3212} 3213 3214uint32_t 3215ctl_get_initindex(struct ctl_nexus *nexus) 3216{ 3217 if (nexus->targ_port < CTL_MAX_PORTS) 3218 return (nexus->initid.id + 3219 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3220 else 3221 return (nexus->initid.id + 3222 ((nexus->targ_port - CTL_MAX_PORTS) * 3223 CTL_MAX_INIT_PER_PORT)); 3224} 3225 3226uint32_t 3227ctl_get_resindex(struct ctl_nexus *nexus) 3228{ 3229 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3230} 3231 3232uint32_t 3233ctl_port_idx(int port_num) 3234{ 3235 if (port_num < CTL_MAX_PORTS) 3236 return(port_num); 3237 else 3238 return(port_num - CTL_MAX_PORTS); 3239} 3240 3241/* 3242 * Note: This only works for bitmask sizes that are at least 32 bits, and 3243 * that are a power of 2. 3244 */ 3245int 3246ctl_ffz(uint32_t *mask, uint32_t size) 3247{ 3248 uint32_t num_chunks, num_pieces; 3249 int i, j; 3250 3251 num_chunks = (size >> 5); 3252 if (num_chunks == 0) 3253 num_chunks++; 3254 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3255 3256 for (i = 0; i < num_chunks; i++) { 3257 for (j = 0; j < num_pieces; j++) { 3258 if ((mask[i] & (1 << j)) == 0) 3259 return ((i << 5) + j); 3260 } 3261 } 3262 3263 return (-1); 3264} 3265 3266int 3267ctl_set_mask(uint32_t *mask, uint32_t bit) 3268{ 3269 uint32_t chunk, piece; 3270 3271 chunk = bit >> 5; 3272 piece = bit % (sizeof(uint32_t) * 8); 3273 3274 if ((mask[chunk] & (1 << piece)) != 0) 3275 return (-1); 3276 else 3277 mask[chunk] |= (1 << piece); 3278 3279 return (0); 3280} 3281 3282int 3283ctl_clear_mask(uint32_t *mask, uint32_t bit) 3284{ 3285 uint32_t chunk, piece; 3286 3287 chunk = bit >> 5; 3288 piece = bit % (sizeof(uint32_t) * 8); 3289 3290 if ((mask[chunk] & (1 << piece)) == 0) 3291 return (-1); 3292 else 3293 mask[chunk] &= ~(1 << piece); 3294 3295 return (0); 3296} 3297 3298int 3299ctl_is_set(uint32_t *mask, uint32_t bit) 3300{ 3301 uint32_t chunk, piece; 3302 3303 chunk = bit >> 5; 3304 piece = bit % (sizeof(uint32_t) * 8); 3305 3306 if ((mask[chunk] & (1 << piece)) == 0) 3307 return (0); 3308 else 3309 return (1); 3310} 3311 3312#ifdef unused 3313/* 3314 * The bus, target and lun are optional, they can be filled in later. 3315 * can_wait is used to determine whether we can wait on the malloc or not. 3316 */ 3317union ctl_io* 3318ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3319 uint32_t targ_lun, int can_wait) 3320{ 3321 union ctl_io *io; 3322 3323 if (can_wait) 3324 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3325 else 3326 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3327 3328 if (io != NULL) { 3329 io->io_hdr.io_type = io_type; 3330 io->io_hdr.targ_port = targ_port; 3331 /* 3332 * XXX KDM this needs to change/go away. We need to move 3333 * to a preallocated pool of ctl_scsiio structures. 3334 */ 3335 io->io_hdr.nexus.targ_target.id = targ_target; 3336 io->io_hdr.nexus.targ_lun = targ_lun; 3337 } 3338 3339 return (io); 3340} 3341 3342void 3343ctl_kfree_io(union ctl_io *io) 3344{ 3345 free(io, M_CTL); 3346} 3347#endif /* unused */ 3348 3349/* 3350 * ctl_softc, pool_type, total_ctl_io are passed in. 3351 * npool is passed out. 3352 */ 3353int 3354ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3355 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3356{ 3357 uint32_t i; 3358 union ctl_io *cur_io, *next_io; 3359 struct ctl_io_pool *pool; 3360 int retval; 3361 3362 retval = 0; 3363 3364 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3365 M_NOWAIT | M_ZERO); 3366 if (pool == NULL) { 3367 retval = -ENOMEM; 3368 goto bailout; 3369 } 3370 3371 pool->type = pool_type; 3372 pool->ctl_softc = ctl_softc; 3373 3374 mtx_lock(&ctl_softc->pool_lock); 3375 pool->id = ctl_softc->cur_pool_id++; 3376 mtx_unlock(&ctl_softc->pool_lock); 3377 3378 pool->flags = CTL_POOL_FLAG_NONE; 3379 pool->refcount = 1; /* Reference for validity. */ 3380 STAILQ_INIT(&pool->free_queue); 3381 3382 /* 3383 * XXX KDM other options here: 3384 * - allocate a page at a time 3385 * - allocate one big chunk of memory. 3386 * Page allocation might work well, but would take a little more 3387 * tracking. 3388 */ 3389 for (i = 0; i < total_ctl_io; i++) { 3390 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3391 M_NOWAIT); 3392 if (cur_io == NULL) { 3393 retval = ENOMEM; 3394 break; 3395 } 3396 cur_io->io_hdr.pool = pool; 3397 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3398 pool->total_ctl_io++; 3399 pool->free_ctl_io++; 3400 } 3401 3402 if (retval != 0) { 3403 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3404 cur_io != NULL; cur_io = next_io) { 3405 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3406 links); 3407 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3408 ctl_io_hdr, links); 3409 free(cur_io, M_CTL); 3410 } 3411 3412 free(pool, M_CTL); 3413 goto bailout; 3414 } 3415 mtx_lock(&ctl_softc->pool_lock); 3416 ctl_softc->num_pools++; 3417 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3418 /* 3419 * Increment our usage count if this is an external consumer, so we 3420 * can't get unloaded until the external consumer (most likely a 3421 * FETD) unloads and frees his pool. 3422 * 3423 * XXX KDM will this increment the caller's module use count, or 3424 * mine? 3425 */ 3426#if 0 3427 if ((pool_type != CTL_POOL_EMERGENCY) 3428 && (pool_type != CTL_POOL_INTERNAL) 3429 && (pool_type != CTL_POOL_IOCTL) 3430 && (pool_type != CTL_POOL_4OTHERSC)) 3431 MOD_INC_USE_COUNT; 3432#endif 3433 3434 mtx_unlock(&ctl_softc->pool_lock); 3435 3436 *npool = pool; 3437 3438bailout: 3439 3440 return (retval); 3441} 3442 3443static int 3444ctl_pool_acquire(struct ctl_io_pool *pool) 3445{ 3446 3447 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3448 3449 if (pool->flags & CTL_POOL_FLAG_INVALID) 3450 return (-EINVAL); 3451 3452 pool->refcount++; 3453 3454 return (0); 3455} 3456 3457static void 3458ctl_pool_release(struct ctl_io_pool *pool) 3459{ 3460 struct ctl_softc *ctl_softc = pool->ctl_softc; 3461 union ctl_io *io; 3462 3463 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3464 3465 if (--pool->refcount != 0) 3466 return; 3467 3468 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3469 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3470 links); 3471 free(io, M_CTL); 3472 } 3473 3474 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3475 ctl_softc->num_pools--; 3476 3477 /* 3478 * XXX KDM will this decrement the caller's usage count or mine? 3479 */ 3480#if 0 3481 if ((pool->type != CTL_POOL_EMERGENCY) 3482 && (pool->type != CTL_POOL_INTERNAL) 3483 && (pool->type != CTL_POOL_IOCTL)) 3484 MOD_DEC_USE_COUNT; 3485#endif 3486 3487 free(pool, M_CTL); 3488} 3489 3490void 3491ctl_pool_free(struct ctl_io_pool *pool) 3492{ 3493 struct ctl_softc *ctl_softc; 3494 3495 if (pool == NULL) 3496 return; 3497 3498 ctl_softc = pool->ctl_softc; 3499 mtx_lock(&ctl_softc->pool_lock); 3500 pool->flags |= CTL_POOL_FLAG_INVALID; 3501 ctl_pool_release(pool); 3502 mtx_unlock(&ctl_softc->pool_lock); 3503} 3504 3505/* 3506 * This routine does not block (except for spinlocks of course). 3507 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3508 * possible. 3509 */ 3510union ctl_io * 3511ctl_alloc_io(void *pool_ref) 3512{ 3513 union ctl_io *io; 3514 struct ctl_softc *ctl_softc; 3515 struct ctl_io_pool *pool, *npool; 3516 struct ctl_io_pool *emergency_pool; 3517 3518 pool = (struct ctl_io_pool *)pool_ref; 3519 3520 if (pool == NULL) { 3521 printf("%s: pool is NULL\n", __func__); 3522 return (NULL); 3523 } 3524 3525 emergency_pool = NULL; 3526 3527 ctl_softc = pool->ctl_softc; 3528 3529 mtx_lock(&ctl_softc->pool_lock); 3530 /* 3531 * First, try to get the io structure from the user's pool. 3532 */ 3533 if (ctl_pool_acquire(pool) == 0) { 3534 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3535 if (io != NULL) { 3536 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3537 pool->total_allocated++; 3538 pool->free_ctl_io--; 3539 mtx_unlock(&ctl_softc->pool_lock); 3540 return (io); 3541 } else 3542 ctl_pool_release(pool); 3543 } 3544 /* 3545 * If he doesn't have any io structures left, search for an 3546 * emergency pool and grab one from there. 3547 */ 3548 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3549 if (npool->type != CTL_POOL_EMERGENCY) 3550 continue; 3551 3552 if (ctl_pool_acquire(npool) != 0) 3553 continue; 3554 3555 emergency_pool = npool; 3556 3557 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3558 if (io != NULL) { 3559 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3560 npool->total_allocated++; 3561 npool->free_ctl_io--; 3562 mtx_unlock(&ctl_softc->pool_lock); 3563 return (io); 3564 } else 3565 ctl_pool_release(npool); 3566 } 3567 3568 /* Drop the spinlock before we malloc */ 3569 mtx_unlock(&ctl_softc->pool_lock); 3570 3571 /* 3572 * The emergency pool (if it exists) didn't have one, so try an 3573 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3574 */ 3575 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3576 if (io != NULL) { 3577 /* 3578 * If the emergency pool exists but is empty, add this 3579 * ctl_io to its list when it gets freed. 3580 */ 3581 if (emergency_pool != NULL) { 3582 mtx_lock(&ctl_softc->pool_lock); 3583 if (ctl_pool_acquire(emergency_pool) == 0) { 3584 io->io_hdr.pool = emergency_pool; 3585 emergency_pool->total_ctl_io++; 3586 /* 3587 * Need to bump this, otherwise 3588 * total_allocated and total_freed won't 3589 * match when we no longer have anything 3590 * outstanding. 3591 */ 3592 emergency_pool->total_allocated++; 3593 } 3594 mtx_unlock(&ctl_softc->pool_lock); 3595 } else 3596 io->io_hdr.pool = NULL; 3597 } 3598 3599 return (io); 3600} 3601 3602void 3603ctl_free_io(union ctl_io *io) 3604{ 3605 if (io == NULL) 3606 return; 3607 3608 /* 3609 * If this ctl_io has a pool, return it to that pool. 3610 */ 3611 if (io->io_hdr.pool != NULL) { 3612 struct ctl_io_pool *pool; 3613#if 0 3614 struct ctl_softc *ctl_softc; 3615 union ctl_io *tmp_io; 3616 unsigned long xflags; 3617 int i; 3618 3619 ctl_softc = control_softc; 3620#endif 3621 3622 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3623 3624 mtx_lock(&pool->ctl_softc->pool_lock); 3625#if 0 3626 save_flags(xflags); 3627 3628 for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST( 3629 &ctl_softc->task_queue); tmp_io != NULL; i++, 3630 tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr, 3631 links)) { 3632 if (tmp_io == io) { 3633 printf("%s: %p is still on the task queue!\n", 3634 __func__, tmp_io); 3635 printf("%s: (%d): type %d " 3636 "msg %d cdb %x iptl: " 3637 "%d:%d:%d:%d tag 0x%04x " 3638 "flg %#lx\n", 3639 __func__, i, 3640 tmp_io->io_hdr.io_type, 3641 tmp_io->io_hdr.msg_type, 3642 tmp_io->scsiio.cdb[0], 3643 tmp_io->io_hdr.nexus.initid.id, 3644 tmp_io->io_hdr.nexus.targ_port, 3645 tmp_io->io_hdr.nexus.targ_target.id, 3646 tmp_io->io_hdr.nexus.targ_lun, 3647 (tmp_io->io_hdr.io_type == 3648 CTL_IO_TASK) ? 3649 tmp_io->taskio.tag_num : 3650 tmp_io->scsiio.tag_num, 3651 xflags); 3652 panic("I/O still on the task queue!"); 3653 } 3654 } 3655#endif 3656 io->io_hdr.io_type = 0xff; 3657 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3658 pool->total_freed++; 3659 pool->free_ctl_io++; 3660 ctl_pool_release(pool); 3661 mtx_unlock(&pool->ctl_softc->pool_lock); 3662 } else { 3663 /* 3664 * Otherwise, just free it. We probably malloced it and 3665 * the emergency pool wasn't available. 3666 */ 3667 free(io, M_CTL); 3668 } 3669 3670} 3671 3672void 3673ctl_zero_io(union ctl_io *io) 3674{ 3675 void *pool_ref; 3676 3677 if (io == NULL) 3678 return; 3679 3680 /* 3681 * May need to preserve linked list pointers at some point too. 3682 */ 3683 pool_ref = io->io_hdr.pool; 3684 3685 memset(io, 0, sizeof(*io)); 3686 3687 io->io_hdr.pool = pool_ref; 3688} 3689 3690/* 3691 * This routine is currently used for internal copies of ctl_ios that need 3692 * to persist for some reason after we've already returned status to the 3693 * FETD. (Thus the flag set.) 3694 * 3695 * XXX XXX 3696 * Note that this makes a blind copy of all fields in the ctl_io, except 3697 * for the pool reference. This includes any memory that has been 3698 * allocated! That memory will no longer be valid after done has been 3699 * called, so this would be VERY DANGEROUS for command that actually does 3700 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3701 * start and stop commands, which don't transfer any data, so this is not a 3702 * problem. If it is used for anything else, the caller would also need to 3703 * allocate data buffer space and this routine would need to be modified to 3704 * copy the data buffer(s) as well. 3705 */ 3706void 3707ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3708{ 3709 void *pool_ref; 3710 3711 if ((src == NULL) 3712 || (dest == NULL)) 3713 return; 3714 3715 /* 3716 * May need to preserve linked list pointers at some point too. 3717 */ 3718 pool_ref = dest->io_hdr.pool; 3719 3720 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3721 3722 dest->io_hdr.pool = pool_ref; 3723 /* 3724 * We need to know that this is an internal copy, and doesn't need 3725 * to get passed back to the FETD that allocated it. 3726 */ 3727 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3728} 3729 3730#ifdef NEEDTOPORT 3731static void 3732ctl_update_power_subpage(struct copan_power_subpage *page) 3733{ 3734 int num_luns, num_partitions, config_type; 3735 struct ctl_softc *softc; 3736 cs_BOOL_t aor_present, shelf_50pct_power; 3737 cs_raidset_personality_t rs_type; 3738 int max_active_luns; 3739 3740 softc = control_softc; 3741 3742 /* subtract out the processor LUN */ 3743 num_luns = softc->num_luns - 1; 3744 /* 3745 * Default to 7 LUNs active, which was the only number we allowed 3746 * in the past. 3747 */ 3748 max_active_luns = 7; 3749 3750 num_partitions = config_GetRsPartitionInfo(); 3751 config_type = config_GetConfigType(); 3752 shelf_50pct_power = config_GetShelfPowerMode(); 3753 aor_present = config_IsAorRsPresent(); 3754 3755 rs_type = ddb_GetRsRaidType(1); 3756 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3757 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3758 EPRINT(0, "Unsupported RS type %d!", rs_type); 3759 } 3760 3761 3762 page->total_luns = num_luns; 3763 3764 switch (config_type) { 3765 case 40: 3766 /* 3767 * In a 40 drive configuration, it doesn't matter what DC 3768 * cards we have, whether we have AOR enabled or not, 3769 * partitioning or not, or what type of RAIDset we have. 3770 * In that scenario, we can power up every LUN we present 3771 * to the user. 3772 */ 3773 max_active_luns = num_luns; 3774 3775 break; 3776 case 64: 3777 if (shelf_50pct_power == CS_FALSE) { 3778 /* 25% power */ 3779 if (aor_present == CS_TRUE) { 3780 if (rs_type == 3781 CS_RAIDSET_PERSONALITY_RAID5) { 3782 max_active_luns = 7; 3783 } else if (rs_type == 3784 CS_RAIDSET_PERSONALITY_RAID1){ 3785 max_active_luns = 14; 3786 } else { 3787 /* XXX KDM now what?? */ 3788 } 3789 } else { 3790 if (rs_type == 3791 CS_RAIDSET_PERSONALITY_RAID5) { 3792 max_active_luns = 8; 3793 } else if (rs_type == 3794 CS_RAIDSET_PERSONALITY_RAID1){ 3795 max_active_luns = 16; 3796 } else { 3797 /* XXX KDM now what?? */ 3798 } 3799 } 3800 } else { 3801 /* 50% power */ 3802 /* 3803 * With 50% power in a 64 drive configuration, we 3804 * can power all LUNs we present. 3805 */ 3806 max_active_luns = num_luns; 3807 } 3808 break; 3809 case 112: 3810 if (shelf_50pct_power == CS_FALSE) { 3811 /* 25% power */ 3812 if (aor_present == CS_TRUE) { 3813 if (rs_type == 3814 CS_RAIDSET_PERSONALITY_RAID5) { 3815 max_active_luns = 7; 3816 } else if (rs_type == 3817 CS_RAIDSET_PERSONALITY_RAID1){ 3818 max_active_luns = 14; 3819 } else { 3820 /* XXX KDM now what?? */ 3821 } 3822 } else { 3823 if (rs_type == 3824 CS_RAIDSET_PERSONALITY_RAID5) { 3825 max_active_luns = 8; 3826 } else if (rs_type == 3827 CS_RAIDSET_PERSONALITY_RAID1){ 3828 max_active_luns = 16; 3829 } else { 3830 /* XXX KDM now what?? */ 3831 } 3832 } 3833 } else { 3834 /* 50% power */ 3835 if (aor_present == CS_TRUE) { 3836 if (rs_type == 3837 CS_RAIDSET_PERSONALITY_RAID5) { 3838 max_active_luns = 14; 3839 } else if (rs_type == 3840 CS_RAIDSET_PERSONALITY_RAID1){ 3841 /* 3842 * We're assuming here that disk 3843 * caching is enabled, and so we're 3844 * able to power up half of each 3845 * LUN, and cache all writes. 3846 */ 3847 max_active_luns = num_luns; 3848 } else { 3849 /* XXX KDM now what?? */ 3850 } 3851 } else { 3852 if (rs_type == 3853 CS_RAIDSET_PERSONALITY_RAID5) { 3854 max_active_luns = 15; 3855 } else if (rs_type == 3856 CS_RAIDSET_PERSONALITY_RAID1){ 3857 max_active_luns = 30; 3858 } else { 3859 /* XXX KDM now what?? */ 3860 } 3861 } 3862 } 3863 break; 3864 default: 3865 /* 3866 * In this case, we have an unknown configuration, so we 3867 * just use the default from above. 3868 */ 3869 break; 3870 } 3871 3872 page->max_active_luns = max_active_luns; 3873#if 0 3874 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3875 page->total_luns, page->max_active_luns); 3876#endif 3877} 3878#endif /* NEEDTOPORT */ 3879 3880/* 3881 * This routine could be used in the future to load default and/or saved 3882 * mode page parameters for a particuar lun. 3883 */ 3884static int 3885ctl_init_page_index(struct ctl_lun *lun) 3886{ 3887 int i; 3888 struct ctl_page_index *page_index; 3889 struct ctl_softc *softc; 3890 3891 memcpy(&lun->mode_pages.index, page_index_template, 3892 sizeof(page_index_template)); 3893 3894 softc = lun->ctl_softc; 3895 3896 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3897 3898 page_index = &lun->mode_pages.index[i]; 3899 /* 3900 * If this is a disk-only mode page, there's no point in 3901 * setting it up. For some pages, we have to have some 3902 * basic information about the disk in order to calculate the 3903 * mode page data. 3904 */ 3905 if ((lun->be_lun->lun_type != T_DIRECT) 3906 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3907 continue; 3908 3909 switch (page_index->page_code & SMPH_PC_MASK) { 3910 case SMS_FORMAT_DEVICE_PAGE: { 3911 struct scsi_format_page *format_page; 3912 3913 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3914 panic("subpage is incorrect!"); 3915 3916 /* 3917 * Sectors per track are set above. Bytes per 3918 * sector need to be set here on a per-LUN basis. 3919 */ 3920 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3921 &format_page_default, 3922 sizeof(format_page_default)); 3923 memcpy(&lun->mode_pages.format_page[ 3924 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3925 sizeof(format_page_changeable)); 3926 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3927 &format_page_default, 3928 sizeof(format_page_default)); 3929 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3930 &format_page_default, 3931 sizeof(format_page_default)); 3932 3933 format_page = &lun->mode_pages.format_page[ 3934 CTL_PAGE_CURRENT]; 3935 scsi_ulto2b(lun->be_lun->blocksize, 3936 format_page->bytes_per_sector); 3937 3938 format_page = &lun->mode_pages.format_page[ 3939 CTL_PAGE_DEFAULT]; 3940 scsi_ulto2b(lun->be_lun->blocksize, 3941 format_page->bytes_per_sector); 3942 3943 format_page = &lun->mode_pages.format_page[ 3944 CTL_PAGE_SAVED]; 3945 scsi_ulto2b(lun->be_lun->blocksize, 3946 format_page->bytes_per_sector); 3947 3948 page_index->page_data = 3949 (uint8_t *)lun->mode_pages.format_page; 3950 break; 3951 } 3952 case SMS_RIGID_DISK_PAGE: { 3953 struct scsi_rigid_disk_page *rigid_disk_page; 3954 uint32_t sectors_per_cylinder; 3955 uint64_t cylinders; 3956#ifndef __XSCALE__ 3957 int shift; 3958#endif /* !__XSCALE__ */ 3959 3960 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3961 panic("invalid subpage value %d", 3962 page_index->subpage); 3963 3964 /* 3965 * Rotation rate and sectors per track are set 3966 * above. We calculate the cylinders here based on 3967 * capacity. Due to the number of heads and 3968 * sectors per track we're using, smaller arrays 3969 * may turn out to have 0 cylinders. Linux and 3970 * FreeBSD don't pay attention to these mode pages 3971 * to figure out capacity, but Solaris does. It 3972 * seems to deal with 0 cylinders just fine, and 3973 * works out a fake geometry based on the capacity. 3974 */ 3975 memcpy(&lun->mode_pages.rigid_disk_page[ 3976 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3977 sizeof(rigid_disk_page_default)); 3978 memcpy(&lun->mode_pages.rigid_disk_page[ 3979 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3980 sizeof(rigid_disk_page_changeable)); 3981 memcpy(&lun->mode_pages.rigid_disk_page[ 3982 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3983 sizeof(rigid_disk_page_default)); 3984 memcpy(&lun->mode_pages.rigid_disk_page[ 3985 CTL_PAGE_SAVED], &rigid_disk_page_default, 3986 sizeof(rigid_disk_page_default)); 3987 3988 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3989 CTL_DEFAULT_HEADS; 3990 3991 /* 3992 * The divide method here will be more accurate, 3993 * probably, but results in floating point being 3994 * used in the kernel on i386 (__udivdi3()). On the 3995 * XScale, though, __udivdi3() is implemented in 3996 * software. 3997 * 3998 * The shift method for cylinder calculation is 3999 * accurate if sectors_per_cylinder is a power of 4000 * 2. Otherwise it might be slightly off -- you 4001 * might have a bit of a truncation problem. 4002 */ 4003#ifdef __XSCALE__ 4004 cylinders = (lun->be_lun->maxlba + 1) / 4005 sectors_per_cylinder; 4006#else 4007 for (shift = 31; shift > 0; shift--) { 4008 if (sectors_per_cylinder & (1 << shift)) 4009 break; 4010 } 4011 cylinders = (lun->be_lun->maxlba + 1) >> shift; 4012#endif 4013 4014 /* 4015 * We've basically got 3 bytes, or 24 bits for the 4016 * cylinder size in the mode page. If we're over, 4017 * just round down to 2^24. 4018 */ 4019 if (cylinders > 0xffffff) 4020 cylinders = 0xffffff; 4021 4022 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4023 CTL_PAGE_CURRENT]; 4024 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4025 4026 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4027 CTL_PAGE_DEFAULT]; 4028 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4029 4030 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4031 CTL_PAGE_SAVED]; 4032 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4033 4034 page_index->page_data = 4035 (uint8_t *)lun->mode_pages.rigid_disk_page; 4036 break; 4037 } 4038 case SMS_CACHING_PAGE: { 4039 4040 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4041 panic("invalid subpage value %d", 4042 page_index->subpage); 4043 /* 4044 * Defaults should be okay here, no calculations 4045 * needed. 4046 */ 4047 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 4048 &caching_page_default, 4049 sizeof(caching_page_default)); 4050 memcpy(&lun->mode_pages.caching_page[ 4051 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4052 sizeof(caching_page_changeable)); 4053 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4054 &caching_page_default, 4055 sizeof(caching_page_default)); 4056 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4057 &caching_page_default, 4058 sizeof(caching_page_default)); 4059 page_index->page_data = 4060 (uint8_t *)lun->mode_pages.caching_page; 4061 break; 4062 } 4063 case SMS_CONTROL_MODE_PAGE: { 4064 4065 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4066 panic("invalid subpage value %d", 4067 page_index->subpage); 4068 4069 /* 4070 * Defaults should be okay here, no calculations 4071 * needed. 4072 */ 4073 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4074 &control_page_default, 4075 sizeof(control_page_default)); 4076 memcpy(&lun->mode_pages.control_page[ 4077 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4078 sizeof(control_page_changeable)); 4079 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4080 &control_page_default, 4081 sizeof(control_page_default)); 4082 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4083 &control_page_default, 4084 sizeof(control_page_default)); 4085 page_index->page_data = 4086 (uint8_t *)lun->mode_pages.control_page; 4087 break; 4088 4089 } 4090 case SMS_VENDOR_SPECIFIC_PAGE:{ 4091 switch (page_index->subpage) { 4092 case PWR_SUBPAGE_CODE: { 4093 struct copan_power_subpage *current_page, 4094 *saved_page; 4095 4096 memcpy(&lun->mode_pages.power_subpage[ 4097 CTL_PAGE_CURRENT], 4098 &power_page_default, 4099 sizeof(power_page_default)); 4100 memcpy(&lun->mode_pages.power_subpage[ 4101 CTL_PAGE_CHANGEABLE], 4102 &power_page_changeable, 4103 sizeof(power_page_changeable)); 4104 memcpy(&lun->mode_pages.power_subpage[ 4105 CTL_PAGE_DEFAULT], 4106 &power_page_default, 4107 sizeof(power_page_default)); 4108 memcpy(&lun->mode_pages.power_subpage[ 4109 CTL_PAGE_SAVED], 4110 &power_page_default, 4111 sizeof(power_page_default)); 4112 page_index->page_data = 4113 (uint8_t *)lun->mode_pages.power_subpage; 4114 4115 current_page = (struct copan_power_subpage *) 4116 (page_index->page_data + 4117 (page_index->page_len * 4118 CTL_PAGE_CURRENT)); 4119 saved_page = (struct copan_power_subpage *) 4120 (page_index->page_data + 4121 (page_index->page_len * 4122 CTL_PAGE_SAVED)); 4123 break; 4124 } 4125 case APS_SUBPAGE_CODE: { 4126 struct copan_aps_subpage *current_page, 4127 *saved_page; 4128 4129 // This gets set multiple times but 4130 // it should always be the same. It's 4131 // only done during init so who cares. 4132 index_to_aps_page = i; 4133 4134 memcpy(&lun->mode_pages.aps_subpage[ 4135 CTL_PAGE_CURRENT], 4136 &aps_page_default, 4137 sizeof(aps_page_default)); 4138 memcpy(&lun->mode_pages.aps_subpage[ 4139 CTL_PAGE_CHANGEABLE], 4140 &aps_page_changeable, 4141 sizeof(aps_page_changeable)); 4142 memcpy(&lun->mode_pages.aps_subpage[ 4143 CTL_PAGE_DEFAULT], 4144 &aps_page_default, 4145 sizeof(aps_page_default)); 4146 memcpy(&lun->mode_pages.aps_subpage[ 4147 CTL_PAGE_SAVED], 4148 &aps_page_default, 4149 sizeof(aps_page_default)); 4150 page_index->page_data = 4151 (uint8_t *)lun->mode_pages.aps_subpage; 4152 4153 current_page = (struct copan_aps_subpage *) 4154 (page_index->page_data + 4155 (page_index->page_len * 4156 CTL_PAGE_CURRENT)); 4157 saved_page = (struct copan_aps_subpage *) 4158 (page_index->page_data + 4159 (page_index->page_len * 4160 CTL_PAGE_SAVED)); 4161 break; 4162 } 4163 case DBGCNF_SUBPAGE_CODE: { 4164 struct copan_debugconf_subpage *current_page, 4165 *saved_page; 4166 4167 memcpy(&lun->mode_pages.debugconf_subpage[ 4168 CTL_PAGE_CURRENT], 4169 &debugconf_page_default, 4170 sizeof(debugconf_page_default)); 4171 memcpy(&lun->mode_pages.debugconf_subpage[ 4172 CTL_PAGE_CHANGEABLE], 4173 &debugconf_page_changeable, 4174 sizeof(debugconf_page_changeable)); 4175 memcpy(&lun->mode_pages.debugconf_subpage[ 4176 CTL_PAGE_DEFAULT], 4177 &debugconf_page_default, 4178 sizeof(debugconf_page_default)); 4179 memcpy(&lun->mode_pages.debugconf_subpage[ 4180 CTL_PAGE_SAVED], 4181 &debugconf_page_default, 4182 sizeof(debugconf_page_default)); 4183 page_index->page_data = 4184 (uint8_t *)lun->mode_pages.debugconf_subpage; 4185 4186 current_page = (struct copan_debugconf_subpage *) 4187 (page_index->page_data + 4188 (page_index->page_len * 4189 CTL_PAGE_CURRENT)); 4190 saved_page = (struct copan_debugconf_subpage *) 4191 (page_index->page_data + 4192 (page_index->page_len * 4193 CTL_PAGE_SAVED)); 4194 break; 4195 } 4196 default: 4197 panic("invalid subpage value %d", 4198 page_index->subpage); 4199 break; 4200 } 4201 break; 4202 } 4203 default: 4204 panic("invalid page value %d", 4205 page_index->page_code & SMPH_PC_MASK); 4206 break; 4207 } 4208 } 4209 4210 return (CTL_RETVAL_COMPLETE); 4211} 4212 4213/* 4214 * LUN allocation. 4215 * 4216 * Requirements: 4217 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4218 * wants us to allocate the LUN and he can block. 4219 * - ctl_softc is always set 4220 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4221 * 4222 * Returns 0 for success, non-zero (errno) for failure. 4223 */ 4224static int 4225ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4226 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4227{ 4228 struct ctl_lun *nlun, *lun; 4229 struct ctl_frontend *fe; 4230 int lun_number, i, lun_malloced; 4231 4232 if (be_lun == NULL) 4233 return (EINVAL); 4234 4235 /* 4236 * We currently only support Direct Access or Processor LUN types. 4237 */ 4238 switch (be_lun->lun_type) { 4239 case T_DIRECT: 4240 break; 4241 case T_PROCESSOR: 4242 break; 4243 case T_SEQUENTIAL: 4244 case T_CHANGER: 4245 default: 4246 be_lun->lun_config_status(be_lun->be_lun, 4247 CTL_LUN_CONFIG_FAILURE); 4248 break; 4249 } 4250 if (ctl_lun == NULL) { 4251 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4252 lun_malloced = 1; 4253 } else { 4254 lun_malloced = 0; 4255 lun = ctl_lun; 4256 } 4257 4258 memset(lun, 0, sizeof(*lun)); 4259 if (lun_malloced) 4260 lun->flags = CTL_LUN_MALLOCED; 4261 4262 mtx_lock(&ctl_softc->ctl_lock); 4263 /* 4264 * See if the caller requested a particular LUN number. If so, see 4265 * if it is available. Otherwise, allocate the first available LUN. 4266 */ 4267 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4268 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4269 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4270 mtx_unlock(&ctl_softc->ctl_lock); 4271 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4272 printf("ctl: requested LUN ID %d is higher " 4273 "than CTL_MAX_LUNS - 1 (%d)\n", 4274 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4275 } else { 4276 /* 4277 * XXX KDM return an error, or just assign 4278 * another LUN ID in this case?? 4279 */ 4280 printf("ctl: requested LUN ID %d is already " 4281 "in use\n", be_lun->req_lun_id); 4282 } 4283 if (lun->flags & CTL_LUN_MALLOCED) 4284 free(lun, M_CTL); 4285 be_lun->lun_config_status(be_lun->be_lun, 4286 CTL_LUN_CONFIG_FAILURE); 4287 return (ENOSPC); 4288 } 4289 lun_number = be_lun->req_lun_id; 4290 } else { 4291 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4292 if (lun_number == -1) { 4293 mtx_unlock(&ctl_softc->ctl_lock); 4294 printf("ctl: can't allocate LUN on target %ju, out of " 4295 "LUNs\n", (uintmax_t)target_id.id); 4296 if (lun->flags & CTL_LUN_MALLOCED) 4297 free(lun, M_CTL); 4298 be_lun->lun_config_status(be_lun->be_lun, 4299 CTL_LUN_CONFIG_FAILURE); 4300 return (ENOSPC); 4301 } 4302 } 4303 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4304 4305 lun->target = target_id; 4306 lun->lun = lun_number; 4307 lun->be_lun = be_lun; 4308 /* 4309 * The processor LUN is always enabled. Disk LUNs come on line 4310 * disabled, and must be enabled by the backend. 4311 */ 4312 lun->flags |= CTL_LUN_DISABLED; 4313 lun->backend = be_lun->be; 4314 be_lun->ctl_lun = lun; 4315 be_lun->lun_id = lun_number; 4316 atomic_add_int(&be_lun->be->num_luns, 1); 4317 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4318 lun->flags |= CTL_LUN_STOPPED; 4319 4320 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4321 lun->flags |= CTL_LUN_INOPERABLE; 4322 4323 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4324 lun->flags |= CTL_LUN_PRIMARY_SC; 4325 4326 lun->ctl_softc = ctl_softc; 4327 TAILQ_INIT(&lun->ooa_queue); 4328 TAILQ_INIT(&lun->blocked_queue); 4329 STAILQ_INIT(&lun->error_list); 4330 4331 /* 4332 * Initialize the mode page index. 4333 */ 4334 ctl_init_page_index(lun); 4335 4336 /* 4337 * Set the poweron UA for all initiators on this LUN only. 4338 */ 4339 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4340 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4341 4342 /* 4343 * Now, before we insert this lun on the lun list, set the lun 4344 * inventory changed UA for all other luns. 4345 */ 4346 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4347 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4348 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4349 } 4350 } 4351 4352 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4353 4354 ctl_softc->ctl_luns[lun_number] = lun; 4355 4356 ctl_softc->num_luns++; 4357 4358 /* Setup statistics gathering */ 4359 lun->stats.device_type = be_lun->lun_type; 4360 lun->stats.lun_number = lun_number; 4361 if (lun->stats.device_type == T_DIRECT) 4362 lun->stats.blocksize = be_lun->blocksize; 4363 else 4364 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4365 for (i = 0;i < CTL_MAX_PORTS;i++) 4366 lun->stats.ports[i].targ_port = i; 4367 4368 mtx_unlock(&ctl_softc->ctl_lock); 4369 4370 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4371 4372 /* 4373 * Run through each registered FETD and bring it online if it isn't 4374 * already. Enable the target ID if it hasn't been enabled, and 4375 * enable this particular LUN. 4376 */ 4377 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4378 int retval; 4379 4380 /* 4381 * XXX KDM this only works for ONE TARGET ID. We'll need 4382 * to do things differently if we go to a multiple target 4383 * ID scheme. 4384 */ 4385 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4386 4387 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4388 if (retval != 0) { 4389 printf("ctl_alloc_lun: FETD %s port %d " 4390 "returned error %d for targ_enable on " 4391 "target %ju\n", fe->port_name, 4392 fe->targ_port, retval, 4393 (uintmax_t)target_id.id); 4394 } else 4395 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4396 } 4397 4398 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4399 if (retval != 0) { 4400 printf("ctl_alloc_lun: FETD %s port %d returned error " 4401 "%d for lun_enable on target %ju lun %d\n", 4402 fe->port_name, fe->targ_port, retval, 4403 (uintmax_t)target_id.id, lun_number); 4404 } else 4405 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4406 } 4407 return (0); 4408} 4409 4410/* 4411 * Delete a LUN. 4412 * Assumptions: 4413 * - LUN has already been marked invalid and any pending I/O has been taken 4414 * care of. 4415 */ 4416static int 4417ctl_free_lun(struct ctl_lun *lun) 4418{ 4419 struct ctl_softc *softc; 4420#if 0 4421 struct ctl_frontend *fe; 4422#endif 4423 struct ctl_lun *nlun; 4424 union ctl_io *io, *next_io; 4425 int i; 4426 4427 softc = lun->ctl_softc; 4428 4429 mtx_assert(&softc->ctl_lock, MA_OWNED); 4430 4431 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4432 4433 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4434 4435 softc->ctl_luns[lun->lun] = NULL; 4436 4437 if (TAILQ_FIRST(&lun->ooa_queue) != NULL) { 4438 printf("ctl_free_lun: aieee!! freeing a LUN with " 4439 "outstanding I/O!!\n"); 4440 } 4441 4442 /* 4443 * If we have anything pending on the RtR queue, remove it. 4444 */ 4445 for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL; 4446 io = next_io) { 4447 uint32_t targ_lun; 4448 4449 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 4450 targ_lun = io->io_hdr.nexus.targ_lun; 4451 if (io->io_hdr.nexus.lun_map_fn != NULL) 4452 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 4453 if ((io->io_hdr.nexus.targ_target.id == lun->target.id) 4454 && (targ_lun == lun->lun)) 4455 STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr, 4456 ctl_io_hdr, links); 4457 } 4458 4459 /* 4460 * Then remove everything from the blocked queue. 4461 */ 4462 for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL; 4463 io = next_io) { 4464 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links); 4465 TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links); 4466 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 4467 } 4468 4469 /* 4470 * Now clear out the OOA queue, and free all the I/O. 4471 * XXX KDM should we notify the FETD here? We probably need to 4472 * quiesce the LUN before deleting it. 4473 */ 4474 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL; 4475 io = next_io) { 4476 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links); 4477 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 4478 ctl_free_io(io); 4479 } 4480 4481 softc->num_luns--; 4482 4483 /* 4484 * XXX KDM this scheme only works for a single target/multiple LUN 4485 * setup. It needs to be revamped for a multiple target scheme. 4486 * 4487 * XXX KDM this results in fe->lun_disable() getting called twice, 4488 * once when ctl_disable_lun() is called, and a second time here. 4489 * We really need to re-think the LUN disable semantics. There 4490 * should probably be several steps/levels to LUN removal: 4491 * - disable 4492 * - invalidate 4493 * - free 4494 * 4495 * Right now we only have a disable method when communicating to 4496 * the front end ports, at least for individual LUNs. 4497 */ 4498#if 0 4499 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4500 int retval; 4501 4502 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4503 lun->lun); 4504 if (retval != 0) { 4505 printf("ctl_free_lun: FETD %s port %d returned error " 4506 "%d for lun_disable on target %ju lun %jd\n", 4507 fe->port_name, fe->targ_port, retval, 4508 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4509 } 4510 4511 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4512 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4513 4514 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4515 if (retval != 0) { 4516 printf("ctl_free_lun: FETD %s port %d " 4517 "returned error %d for targ_disable on " 4518 "target %ju\n", fe->port_name, 4519 fe->targ_port, retval, 4520 (uintmax_t)lun->target.id); 4521 } else 4522 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4523 4524 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4525 continue; 4526 4527#if 0 4528 fe->port_offline(fe->onoff_arg); 4529 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4530#endif 4531 } 4532 } 4533#endif 4534 4535 /* 4536 * Tell the backend to free resources, if this LUN has a backend. 4537 */ 4538 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4539 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4540 4541 if (lun->flags & CTL_LUN_MALLOCED) 4542 free(lun, M_CTL); 4543 4544 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4545 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4546 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4547 } 4548 } 4549 4550 return (0); 4551} 4552 4553static void 4554ctl_create_lun(struct ctl_be_lun *be_lun) 4555{ 4556 struct ctl_softc *ctl_softc; 4557 4558 ctl_softc = control_softc; 4559 4560 /* 4561 * ctl_alloc_lun() should handle all potential failure cases. 4562 */ 4563 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4564} 4565 4566int 4567ctl_add_lun(struct ctl_be_lun *be_lun) 4568{ 4569 struct ctl_softc *ctl_softc; 4570 4571 ctl_softc = control_softc; 4572 4573 mtx_lock(&ctl_softc->ctl_lock); 4574 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4575 mtx_unlock(&ctl_softc->ctl_lock); 4576 4577 ctl_wakeup_thread(); 4578 4579 return (0); 4580} 4581 4582int 4583ctl_enable_lun(struct ctl_be_lun *be_lun) 4584{ 4585 struct ctl_softc *ctl_softc; 4586 struct ctl_frontend *fe, *nfe; 4587 struct ctl_lun *lun; 4588 int retval; 4589 4590 ctl_softc = control_softc; 4591 4592 lun = (struct ctl_lun *)be_lun->ctl_lun; 4593 4594 mtx_lock(&ctl_softc->ctl_lock); 4595 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4596 /* 4597 * eh? Why did we get called if the LUN is already 4598 * enabled? 4599 */ 4600 mtx_unlock(&ctl_softc->ctl_lock); 4601 return (0); 4602 } 4603 lun->flags &= ~CTL_LUN_DISABLED; 4604 4605 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4606 nfe = STAILQ_NEXT(fe, links); 4607 4608 /* 4609 * Drop the lock while we call the FETD's enable routine. 4610 * This can lead to a callback into CTL (at least in the 4611 * case of the internal initiator frontend. 4612 */ 4613 mtx_unlock(&ctl_softc->ctl_lock); 4614 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4615 mtx_lock(&ctl_softc->ctl_lock); 4616 if (retval != 0) { 4617 printf("%s: FETD %s port %d returned error " 4618 "%d for lun_enable on target %ju lun %jd\n", 4619 __func__, fe->port_name, fe->targ_port, retval, 4620 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4621 } 4622#if 0 4623 else { 4624 /* NOTE: TODO: why does lun enable affect port status? */ 4625 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4626 } 4627#endif 4628 } 4629 4630 mtx_unlock(&ctl_softc->ctl_lock); 4631 4632 return (0); 4633} 4634 4635int 4636ctl_disable_lun(struct ctl_be_lun *be_lun) 4637{ 4638 struct ctl_softc *ctl_softc; 4639 struct ctl_frontend *fe; 4640 struct ctl_lun *lun; 4641 int retval; 4642 4643 ctl_softc = control_softc; 4644 4645 lun = (struct ctl_lun *)be_lun->ctl_lun; 4646 4647 mtx_lock(&ctl_softc->ctl_lock); 4648 4649 if (lun->flags & CTL_LUN_DISABLED) { 4650 mtx_unlock(&ctl_softc->ctl_lock); 4651 return (0); 4652 } 4653 lun->flags |= CTL_LUN_DISABLED; 4654 4655 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4656 mtx_unlock(&ctl_softc->ctl_lock); 4657 /* 4658 * Drop the lock before we call the frontend's disable 4659 * routine, to avoid lock order reversals. 4660 * 4661 * XXX KDM what happens if the frontend list changes while 4662 * we're traversing it? It's unlikely, but should be handled. 4663 */ 4664 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4665 lun->lun); 4666 mtx_lock(&ctl_softc->ctl_lock); 4667 if (retval != 0) { 4668 printf("ctl_alloc_lun: FETD %s port %d returned error " 4669 "%d for lun_disable on target %ju lun %jd\n", 4670 fe->port_name, fe->targ_port, retval, 4671 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4672 } 4673 } 4674 4675 mtx_unlock(&ctl_softc->ctl_lock); 4676 4677 return (0); 4678} 4679 4680int 4681ctl_start_lun(struct ctl_be_lun *be_lun) 4682{ 4683 struct ctl_softc *ctl_softc; 4684 struct ctl_lun *lun; 4685 4686 ctl_softc = control_softc; 4687 4688 lun = (struct ctl_lun *)be_lun->ctl_lun; 4689 4690 mtx_lock(&ctl_softc->ctl_lock); 4691 lun->flags &= ~CTL_LUN_STOPPED; 4692 mtx_unlock(&ctl_softc->ctl_lock); 4693 4694 return (0); 4695} 4696 4697int 4698ctl_stop_lun(struct ctl_be_lun *be_lun) 4699{ 4700 struct ctl_softc *ctl_softc; 4701 struct ctl_lun *lun; 4702 4703 ctl_softc = control_softc; 4704 4705 lun = (struct ctl_lun *)be_lun->ctl_lun; 4706 4707 mtx_lock(&ctl_softc->ctl_lock); 4708 lun->flags |= CTL_LUN_STOPPED; 4709 mtx_unlock(&ctl_softc->ctl_lock); 4710 4711 return (0); 4712} 4713 4714int 4715ctl_lun_offline(struct ctl_be_lun *be_lun) 4716{ 4717 struct ctl_softc *ctl_softc; 4718 struct ctl_lun *lun; 4719 4720 ctl_softc = control_softc; 4721 4722 lun = (struct ctl_lun *)be_lun->ctl_lun; 4723 4724 mtx_lock(&ctl_softc->ctl_lock); 4725 lun->flags |= CTL_LUN_OFFLINE; 4726 mtx_unlock(&ctl_softc->ctl_lock); 4727 4728 return (0); 4729} 4730 4731int 4732ctl_lun_online(struct ctl_be_lun *be_lun) 4733{ 4734 struct ctl_softc *ctl_softc; 4735 struct ctl_lun *lun; 4736 4737 ctl_softc = control_softc; 4738 4739 lun = (struct ctl_lun *)be_lun->ctl_lun; 4740 4741 mtx_lock(&ctl_softc->ctl_lock); 4742 lun->flags &= ~CTL_LUN_OFFLINE; 4743 mtx_unlock(&ctl_softc->ctl_lock); 4744 4745 return (0); 4746} 4747 4748int 4749ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4750{ 4751 struct ctl_softc *ctl_softc; 4752 struct ctl_lun *lun; 4753 4754 ctl_softc = control_softc; 4755 4756 lun = (struct ctl_lun *)be_lun->ctl_lun; 4757 4758 mtx_lock(&ctl_softc->ctl_lock); 4759 4760 /* 4761 * The LUN needs to be disabled before it can be marked invalid. 4762 */ 4763 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4764 mtx_unlock(&ctl_softc->ctl_lock); 4765 return (-1); 4766 } 4767 /* 4768 * Mark the LUN invalid. 4769 */ 4770 lun->flags |= CTL_LUN_INVALID; 4771 4772 /* 4773 * If there is nothing in the OOA queue, go ahead and free the LUN. 4774 * If we have something in the OOA queue, we'll free it when the 4775 * last I/O completes. 4776 */ 4777 if (TAILQ_FIRST(&lun->ooa_queue) == NULL) 4778 ctl_free_lun(lun); 4779 mtx_unlock(&ctl_softc->ctl_lock); 4780 4781 return (0); 4782} 4783 4784int 4785ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4786{ 4787 struct ctl_softc *ctl_softc; 4788 struct ctl_lun *lun; 4789 4790 ctl_softc = control_softc; 4791 lun = (struct ctl_lun *)be_lun->ctl_lun; 4792 4793 mtx_lock(&ctl_softc->ctl_lock); 4794 lun->flags |= CTL_LUN_INOPERABLE; 4795 mtx_unlock(&ctl_softc->ctl_lock); 4796 4797 return (0); 4798} 4799 4800int 4801ctl_lun_operable(struct ctl_be_lun *be_lun) 4802{ 4803 struct ctl_softc *ctl_softc; 4804 struct ctl_lun *lun; 4805 4806 ctl_softc = control_softc; 4807 lun = (struct ctl_lun *)be_lun->ctl_lun; 4808 4809 mtx_lock(&ctl_softc->ctl_lock); 4810 lun->flags &= ~CTL_LUN_INOPERABLE; 4811 mtx_unlock(&ctl_softc->ctl_lock); 4812 4813 return (0); 4814} 4815 4816int 4817ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4818 int lock) 4819{ 4820 struct ctl_softc *softc; 4821 struct ctl_lun *lun; 4822 struct copan_aps_subpage *current_sp; 4823 struct ctl_page_index *page_index; 4824 int i; 4825 4826 softc = control_softc; 4827 4828 mtx_lock(&softc->ctl_lock); 4829 4830 lun = (struct ctl_lun *)be_lun->ctl_lun; 4831 4832 page_index = NULL; 4833 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4834 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4835 APS_PAGE_CODE) 4836 continue; 4837 4838 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4839 continue; 4840 page_index = &lun->mode_pages.index[i]; 4841 } 4842 4843 if (page_index == NULL) { 4844 mtx_unlock(&softc->ctl_lock); 4845 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4846 (uintmax_t)lun->lun); 4847 return (1); 4848 } 4849#if 0 4850 if ((softc->aps_locked_lun != 0) 4851 && (softc->aps_locked_lun != lun->lun)) { 4852 printf("%s: attempt to lock LUN %llu when %llu is already " 4853 "locked\n"); 4854 mtx_unlock(&softc->ctl_lock); 4855 return (1); 4856 } 4857#endif 4858 4859 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4860 (page_index->page_len * CTL_PAGE_CURRENT)); 4861 4862 if (lock != 0) { 4863 current_sp->lock_active = APS_LOCK_ACTIVE; 4864 softc->aps_locked_lun = lun->lun; 4865 } else { 4866 current_sp->lock_active = 0; 4867 softc->aps_locked_lun = 0; 4868 } 4869 4870 4871 /* 4872 * If we're in HA mode, try to send the lock message to the other 4873 * side. 4874 */ 4875 if (ctl_is_single == 0) { 4876 int isc_retval; 4877 union ctl_ha_msg lock_msg; 4878 4879 lock_msg.hdr.nexus = *nexus; 4880 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4881 if (lock != 0) 4882 lock_msg.aps.lock_flag = 1; 4883 else 4884 lock_msg.aps.lock_flag = 0; 4885 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4886 sizeof(lock_msg), 0); 4887 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4888 printf("%s: APS (lock=%d) error returned from " 4889 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4890 mtx_unlock(&softc->ctl_lock); 4891 return (1); 4892 } 4893 } 4894 4895 mtx_unlock(&softc->ctl_lock); 4896 4897 return (0); 4898} 4899 4900void 4901ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4902{ 4903 struct ctl_lun *lun; 4904 struct ctl_softc *softc; 4905 int i; 4906 4907 softc = control_softc; 4908 4909 mtx_lock(&softc->ctl_lock); 4910 4911 lun = (struct ctl_lun *)be_lun->ctl_lun; 4912 4913 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4914 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4915 4916 mtx_unlock(&softc->ctl_lock); 4917} 4918 4919/* 4920 * Backend "memory move is complete" callback for requests that never 4921 * make it down to say RAIDCore's configuration code. 4922 */ 4923int 4924ctl_config_move_done(union ctl_io *io) 4925{ 4926 int retval; 4927 4928 retval = CTL_RETVAL_COMPLETE; 4929 4930 4931 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4932 /* 4933 * XXX KDM this shouldn't happen, but what if it does? 4934 */ 4935 if (io->io_hdr.io_type != CTL_IO_SCSI) 4936 panic("I/O type isn't CTL_IO_SCSI!"); 4937 4938 if ((io->io_hdr.port_status == 0) 4939 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4940 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4941 io->io_hdr.status = CTL_SUCCESS; 4942 else if ((io->io_hdr.port_status != 0) 4943 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4944 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4945 /* 4946 * For hardware error sense keys, the sense key 4947 * specific value is defined to be a retry count, 4948 * but we use it to pass back an internal FETD 4949 * error code. XXX KDM Hopefully the FETD is only 4950 * using 16 bits for an error code, since that's 4951 * all the space we have in the sks field. 4952 */ 4953 ctl_set_internal_failure(&io->scsiio, 4954 /*sks_valid*/ 1, 4955 /*retry_count*/ 4956 io->io_hdr.port_status); 4957 free(io->scsiio.kern_data_ptr, M_CTL); 4958 ctl_done(io); 4959 goto bailout; 4960 } 4961 4962 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4963 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4964 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4965 /* 4966 * XXX KDM just assuming a single pointer here, and not a 4967 * S/G list. If we start using S/G lists for config data, 4968 * we'll need to know how to clean them up here as well. 4969 */ 4970 free(io->scsiio.kern_data_ptr, M_CTL); 4971 /* Hopefully the user has already set the status... */ 4972 ctl_done(io); 4973 } else { 4974 /* 4975 * XXX KDM now we need to continue data movement. Some 4976 * options: 4977 * - call ctl_scsiio() again? We don't do this for data 4978 * writes, because for those at least we know ahead of 4979 * time where the write will go and how long it is. For 4980 * config writes, though, that information is largely 4981 * contained within the write itself, thus we need to 4982 * parse out the data again. 4983 * 4984 * - Call some other function once the data is in? 4985 */ 4986 4987 /* 4988 * XXX KDM call ctl_scsiio() again for now, and check flag 4989 * bits to see whether we're allocated or not. 4990 */ 4991 retval = ctl_scsiio(&io->scsiio); 4992 } 4993bailout: 4994 return (retval); 4995} 4996 4997/* 4998 * This gets called by a backend driver when it is done with a 4999 * data_submit method. 5000 */ 5001void 5002ctl_data_submit_done(union ctl_io *io) 5003{ 5004 /* 5005 * If the IO_CONT flag is set, we need to call the supplied 5006 * function to continue processing the I/O, instead of completing 5007 * the I/O just yet. 5008 * 5009 * If there is an error, though, we don't want to keep processing. 5010 * Instead, just send status back to the initiator. 5011 */ 5012 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5013 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5014 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5015 io->scsiio.io_cont(io); 5016 return; 5017 } 5018 ctl_done(io); 5019} 5020 5021/* 5022 * This gets called by a backend driver when it is done with a 5023 * configuration write. 5024 */ 5025void 5026ctl_config_write_done(union ctl_io *io) 5027{ 5028 /* 5029 * If the IO_CONT flag is set, we need to call the supplied 5030 * function to continue processing the I/O, instead of completing 5031 * the I/O just yet. 5032 * 5033 * If there is an error, though, we don't want to keep processing. 5034 * Instead, just send status back to the initiator. 5035 */ 5036 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5037 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5038 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5039 io->scsiio.io_cont(io); 5040 return; 5041 } 5042 /* 5043 * Since a configuration write can be done for commands that actually 5044 * have data allocated, like write buffer, and commands that have 5045 * no data, like start/stop unit, we need to check here. 5046 */ 5047 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5048 free(io->scsiio.kern_data_ptr, M_CTL); 5049 ctl_done(io); 5050} 5051 5052/* 5053 * SCSI release command. 5054 */ 5055int 5056ctl_scsi_release(struct ctl_scsiio *ctsio) 5057{ 5058 int length, longid, thirdparty_id, resv_id; 5059 struct ctl_softc *ctl_softc; 5060 struct ctl_lun *lun; 5061 5062 length = 0; 5063 resv_id = 0; 5064 5065 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5066 5067 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5068 ctl_softc = control_softc; 5069 5070 switch (ctsio->cdb[0]) { 5071 case RELEASE: { 5072 struct scsi_release *cdb; 5073 5074 cdb = (struct scsi_release *)ctsio->cdb; 5075 if ((cdb->byte2 & 0x1f) != 0) { 5076 ctl_set_invalid_field(ctsio, 5077 /*sks_valid*/ 1, 5078 /*command*/ 1, 5079 /*field*/ 1, 5080 /*bit_valid*/ 0, 5081 /*bit*/ 0); 5082 ctl_done((union ctl_io *)ctsio); 5083 return (CTL_RETVAL_COMPLETE); 5084 } 5085 break; 5086 } 5087 case RELEASE_10: { 5088 struct scsi_release_10 *cdb; 5089 5090 cdb = (struct scsi_release_10 *)ctsio->cdb; 5091 5092 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5093 ctl_set_invalid_field(ctsio, 5094 /*sks_valid*/ 1, 5095 /*command*/ 1, 5096 /*field*/ 1, 5097 /*bit_valid*/ 1, 5098 /*bit*/ 0); 5099 ctl_done((union ctl_io *)ctsio); 5100 return (CTL_RETVAL_COMPLETE); 5101 5102 } 5103 5104 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5105 ctl_set_invalid_field(ctsio, 5106 /*sks_valid*/ 1, 5107 /*command*/ 1, 5108 /*field*/ 1, 5109 /*bit_valid*/ 1, 5110 /*bit*/ 4); 5111 ctl_done((union ctl_io *)ctsio); 5112 return (CTL_RETVAL_COMPLETE); 5113 } 5114 5115 if (cdb->byte2 & SR10_LONGID) 5116 longid = 1; 5117 else 5118 thirdparty_id = cdb->thirdparty_id; 5119 5120 resv_id = cdb->resv_id; 5121 length = scsi_2btoul(cdb->length); 5122 break; 5123 } 5124 } 5125 5126 5127 /* 5128 * XXX KDM right now, we only support LUN reservation. We don't 5129 * support 3rd party reservations, or extent reservations, which 5130 * might actually need the parameter list. If we've gotten this 5131 * far, we've got a LUN reservation. Anything else got kicked out 5132 * above. So, according to SPC, ignore the length. 5133 */ 5134 length = 0; 5135 5136 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5137 && (length > 0)) { 5138 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5139 ctsio->kern_data_len = length; 5140 ctsio->kern_total_len = length; 5141 ctsio->kern_data_resid = 0; 5142 ctsio->kern_rel_offset = 0; 5143 ctsio->kern_sg_entries = 0; 5144 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5145 ctsio->be_move_done = ctl_config_move_done; 5146 ctl_datamove((union ctl_io *)ctsio); 5147 5148 return (CTL_RETVAL_COMPLETE); 5149 } 5150 5151 if (length > 0) 5152 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5153 5154 mtx_lock(&ctl_softc->ctl_lock); 5155 5156 /* 5157 * According to SPC, it is not an error for an intiator to attempt 5158 * to release a reservation on a LUN that isn't reserved, or that 5159 * is reserved by another initiator. The reservation can only be 5160 * released, though, by the initiator who made it or by one of 5161 * several reset type events. 5162 */ 5163 if (lun->flags & CTL_LUN_RESERVED) { 5164 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5165 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5166 && (ctsio->io_hdr.nexus.targ_target.id == 5167 lun->rsv_nexus.targ_target.id)) { 5168 lun->flags &= ~CTL_LUN_RESERVED; 5169 } 5170 } 5171 5172 ctsio->scsi_status = SCSI_STATUS_OK; 5173 ctsio->io_hdr.status = CTL_SUCCESS; 5174 5175 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5176 free(ctsio->kern_data_ptr, M_CTL); 5177 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5178 } 5179 5180 mtx_unlock(&ctl_softc->ctl_lock); 5181 5182 ctl_done((union ctl_io *)ctsio); 5183 return (CTL_RETVAL_COMPLETE); 5184} 5185 5186int 5187ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5188{ 5189 int extent, thirdparty, longid; 5190 int resv_id, length; 5191 uint64_t thirdparty_id; 5192 struct ctl_softc *ctl_softc; 5193 struct ctl_lun *lun; 5194 5195 extent = 0; 5196 thirdparty = 0; 5197 longid = 0; 5198 resv_id = 0; 5199 length = 0; 5200 thirdparty_id = 0; 5201 5202 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5203 5204 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5205 ctl_softc = control_softc; 5206 5207 switch (ctsio->cdb[0]) { 5208 case RESERVE: { 5209 struct scsi_reserve *cdb; 5210 5211 cdb = (struct scsi_reserve *)ctsio->cdb; 5212 if ((cdb->byte2 & 0x1f) != 0) { 5213 ctl_set_invalid_field(ctsio, 5214 /*sks_valid*/ 1, 5215 /*command*/ 1, 5216 /*field*/ 1, 5217 /*bit_valid*/ 0, 5218 /*bit*/ 0); 5219 ctl_done((union ctl_io *)ctsio); 5220 return (CTL_RETVAL_COMPLETE); 5221 } 5222 resv_id = cdb->resv_id; 5223 length = scsi_2btoul(cdb->length); 5224 break; 5225 } 5226 case RESERVE_10: { 5227 struct scsi_reserve_10 *cdb; 5228 5229 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5230 5231 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5232 ctl_set_invalid_field(ctsio, 5233 /*sks_valid*/ 1, 5234 /*command*/ 1, 5235 /*field*/ 1, 5236 /*bit_valid*/ 1, 5237 /*bit*/ 0); 5238 ctl_done((union ctl_io *)ctsio); 5239 return (CTL_RETVAL_COMPLETE); 5240 } 5241 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5242 ctl_set_invalid_field(ctsio, 5243 /*sks_valid*/ 1, 5244 /*command*/ 1, 5245 /*field*/ 1, 5246 /*bit_valid*/ 1, 5247 /*bit*/ 4); 5248 ctl_done((union ctl_io *)ctsio); 5249 return (CTL_RETVAL_COMPLETE); 5250 } 5251 if (cdb->byte2 & SR10_LONGID) 5252 longid = 1; 5253 else 5254 thirdparty_id = cdb->thirdparty_id; 5255 5256 resv_id = cdb->resv_id; 5257 length = scsi_2btoul(cdb->length); 5258 break; 5259 } 5260 } 5261 5262 /* 5263 * XXX KDM right now, we only support LUN reservation. We don't 5264 * support 3rd party reservations, or extent reservations, which 5265 * might actually need the parameter list. If we've gotten this 5266 * far, we've got a LUN reservation. Anything else got kicked out 5267 * above. So, according to SPC, ignore the length. 5268 */ 5269 length = 0; 5270 5271 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5272 && (length > 0)) { 5273 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5274 ctsio->kern_data_len = length; 5275 ctsio->kern_total_len = length; 5276 ctsio->kern_data_resid = 0; 5277 ctsio->kern_rel_offset = 0; 5278 ctsio->kern_sg_entries = 0; 5279 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5280 ctsio->be_move_done = ctl_config_move_done; 5281 ctl_datamove((union ctl_io *)ctsio); 5282 5283 return (CTL_RETVAL_COMPLETE); 5284 } 5285 5286 if (length > 0) 5287 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5288 5289 mtx_lock(&ctl_softc->ctl_lock); 5290 if (lun->flags & CTL_LUN_RESERVED) { 5291 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5292 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5293 || (ctsio->io_hdr.nexus.targ_target.id != 5294 lun->rsv_nexus.targ_target.id)) { 5295 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5296 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5297 goto bailout; 5298 } 5299 } 5300 5301 lun->flags |= CTL_LUN_RESERVED; 5302 lun->rsv_nexus = ctsio->io_hdr.nexus; 5303 5304 ctsio->scsi_status = SCSI_STATUS_OK; 5305 ctsio->io_hdr.status = CTL_SUCCESS; 5306 5307bailout: 5308 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5309 free(ctsio->kern_data_ptr, M_CTL); 5310 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5311 } 5312 5313 mtx_unlock(&ctl_softc->ctl_lock); 5314 5315 ctl_done((union ctl_io *)ctsio); 5316 return (CTL_RETVAL_COMPLETE); 5317} 5318 5319int 5320ctl_start_stop(struct ctl_scsiio *ctsio) 5321{ 5322 struct scsi_start_stop_unit *cdb; 5323 struct ctl_lun *lun; 5324 struct ctl_softc *ctl_softc; 5325 int retval; 5326 5327 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5328 5329 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5330 ctl_softc = control_softc; 5331 retval = 0; 5332 5333 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5334 5335 /* 5336 * XXX KDM 5337 * We don't support the immediate bit on a stop unit. In order to 5338 * do that, we would need to code up a way to know that a stop is 5339 * pending, and hold off any new commands until it completes, one 5340 * way or another. Then we could accept or reject those commands 5341 * depending on its status. We would almost need to do the reverse 5342 * of what we do below for an immediate start -- return the copy of 5343 * the ctl_io to the FETD with status to send to the host (and to 5344 * free the copy!) and then free the original I/O once the stop 5345 * actually completes. That way, the OOA queue mechanism can work 5346 * to block commands that shouldn't proceed. Another alternative 5347 * would be to put the copy in the queue in place of the original, 5348 * and return the original back to the caller. That could be 5349 * slightly safer.. 5350 */ 5351 if ((cdb->byte2 & SSS_IMMED) 5352 && ((cdb->how & SSS_START) == 0)) { 5353 ctl_set_invalid_field(ctsio, 5354 /*sks_valid*/ 1, 5355 /*command*/ 1, 5356 /*field*/ 1, 5357 /*bit_valid*/ 1, 5358 /*bit*/ 0); 5359 ctl_done((union ctl_io *)ctsio); 5360 return (CTL_RETVAL_COMPLETE); 5361 } 5362 5363 /* 5364 * We don't support the power conditions field. We need to check 5365 * this prior to checking the load/eject and start/stop bits. 5366 */ 5367 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5368 ctl_set_invalid_field(ctsio, 5369 /*sks_valid*/ 1, 5370 /*command*/ 1, 5371 /*field*/ 4, 5372 /*bit_valid*/ 1, 5373 /*bit*/ 4); 5374 ctl_done((union ctl_io *)ctsio); 5375 return (CTL_RETVAL_COMPLETE); 5376 } 5377 5378 /* 5379 * Media isn't removable, so we can't load or eject it. 5380 */ 5381 if ((cdb->how & SSS_LOEJ) != 0) { 5382 ctl_set_invalid_field(ctsio, 5383 /*sks_valid*/ 1, 5384 /*command*/ 1, 5385 /*field*/ 4, 5386 /*bit_valid*/ 1, 5387 /*bit*/ 1); 5388 ctl_done((union ctl_io *)ctsio); 5389 return (CTL_RETVAL_COMPLETE); 5390 } 5391 5392 if ((lun->flags & CTL_LUN_PR_RESERVED) 5393 && ((cdb->how & SSS_START)==0)) { 5394 uint32_t residx; 5395 5396 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5397 if (!lun->per_res[residx].registered 5398 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5399 5400 ctl_set_reservation_conflict(ctsio); 5401 ctl_done((union ctl_io *)ctsio); 5402 return (CTL_RETVAL_COMPLETE); 5403 } 5404 } 5405 5406 /* 5407 * If there is no backend on this device, we can't start or stop 5408 * it. In theory we shouldn't get any start/stop commands in the 5409 * first place at this level if the LUN doesn't have a backend. 5410 * That should get stopped by the command decode code. 5411 */ 5412 if (lun->backend == NULL) { 5413 ctl_set_invalid_opcode(ctsio); 5414 ctl_done((union ctl_io *)ctsio); 5415 return (CTL_RETVAL_COMPLETE); 5416 } 5417 5418 /* 5419 * XXX KDM Copan-specific offline behavior. 5420 * Figure out a reasonable way to port this? 5421 */ 5422#ifdef NEEDTOPORT 5423 mtx_lock(&ctl_softc->ctl_lock); 5424 5425 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5426 && (lun->flags & CTL_LUN_OFFLINE)) { 5427 /* 5428 * If the LUN is offline, and the on/offline bit isn't set, 5429 * reject the start or stop. Otherwise, let it through. 5430 */ 5431 mtx_unlock(&ctl_softc->ctl_lock); 5432 ctl_set_lun_not_ready(ctsio); 5433 ctl_done((union ctl_io *)ctsio); 5434 } else { 5435 mtx_unlock(&ctl_softc->ctl_lock); 5436#endif /* NEEDTOPORT */ 5437 /* 5438 * This could be a start or a stop when we're online, 5439 * or a stop/offline or start/online. A start or stop when 5440 * we're offline is covered in the case above. 5441 */ 5442 /* 5443 * In the non-immediate case, we send the request to 5444 * the backend and return status to the user when 5445 * it is done. 5446 * 5447 * In the immediate case, we allocate a new ctl_io 5448 * to hold a copy of the request, and send that to 5449 * the backend. We then set good status on the 5450 * user's request and return it immediately. 5451 */ 5452 if (cdb->byte2 & SSS_IMMED) { 5453 union ctl_io *new_io; 5454 5455 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5456 if (new_io == NULL) { 5457 ctl_set_busy(ctsio); 5458 ctl_done((union ctl_io *)ctsio); 5459 } else { 5460 ctl_copy_io((union ctl_io *)ctsio, 5461 new_io); 5462 retval = lun->backend->config_write(new_io); 5463 ctl_set_success(ctsio); 5464 ctl_done((union ctl_io *)ctsio); 5465 } 5466 } else { 5467 retval = lun->backend->config_write( 5468 (union ctl_io *)ctsio); 5469 } 5470#ifdef NEEDTOPORT 5471 } 5472#endif 5473 return (retval); 5474} 5475 5476/* 5477 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5478 * we don't really do anything with the LBA and length fields if the user 5479 * passes them in. Instead we'll just flush out the cache for the entire 5480 * LUN. 5481 */ 5482int 5483ctl_sync_cache(struct ctl_scsiio *ctsio) 5484{ 5485 struct ctl_lun *lun; 5486 struct ctl_softc *ctl_softc; 5487 uint64_t starting_lba; 5488 uint32_t block_count; 5489 int reladr, immed; 5490 int retval; 5491 5492 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5493 5494 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5495 ctl_softc = control_softc; 5496 retval = 0; 5497 reladr = 0; 5498 immed = 0; 5499 5500 switch (ctsio->cdb[0]) { 5501 case SYNCHRONIZE_CACHE: { 5502 struct scsi_sync_cache *cdb; 5503 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5504 5505 if (cdb->byte2 & SSC_RELADR) 5506 reladr = 1; 5507 5508 if (cdb->byte2 & SSC_IMMED) 5509 immed = 1; 5510 5511 starting_lba = scsi_4btoul(cdb->begin_lba); 5512 block_count = scsi_2btoul(cdb->lb_count); 5513 break; 5514 } 5515 case SYNCHRONIZE_CACHE_16: { 5516 struct scsi_sync_cache_16 *cdb; 5517 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5518 5519 if (cdb->byte2 & SSC_RELADR) 5520 reladr = 1; 5521 5522 if (cdb->byte2 & SSC_IMMED) 5523 immed = 1; 5524 5525 starting_lba = scsi_8btou64(cdb->begin_lba); 5526 block_count = scsi_4btoul(cdb->lb_count); 5527 break; 5528 } 5529 default: 5530 ctl_set_invalid_opcode(ctsio); 5531 ctl_done((union ctl_io *)ctsio); 5532 goto bailout; 5533 break; /* NOTREACHED */ 5534 } 5535 5536 if (immed) { 5537 /* 5538 * We don't support the immediate bit. Since it's in the 5539 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5540 * commands, we can just return the same error in either 5541 * case. 5542 */ 5543 ctl_set_invalid_field(ctsio, 5544 /*sks_valid*/ 1, 5545 /*command*/ 1, 5546 /*field*/ 1, 5547 /*bit_valid*/ 1, 5548 /*bit*/ 1); 5549 ctl_done((union ctl_io *)ctsio); 5550 goto bailout; 5551 } 5552 5553 if (reladr) { 5554 /* 5555 * We don't support the reladr bit either. It can only be 5556 * used with linked commands, and we don't support linked 5557 * commands. Since the bit is in the same place for the 5558 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5559 * just return the same error in either case. 5560 */ 5561 ctl_set_invalid_field(ctsio, 5562 /*sks_valid*/ 1, 5563 /*command*/ 1, 5564 /*field*/ 1, 5565 /*bit_valid*/ 1, 5566 /*bit*/ 0); 5567 ctl_done((union ctl_io *)ctsio); 5568 goto bailout; 5569 } 5570 5571 /* 5572 * We check the LBA and length, but don't do anything with them. 5573 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5574 * get flushed. This check will just help satisfy anyone who wants 5575 * to see an error for an out of range LBA. 5576 */ 5577 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5578 ctl_set_lba_out_of_range(ctsio); 5579 ctl_done((union ctl_io *)ctsio); 5580 goto bailout; 5581 } 5582 5583 /* 5584 * If this LUN has no backend, we can't flush the cache anyway. 5585 */ 5586 if (lun->backend == NULL) { 5587 ctl_set_invalid_opcode(ctsio); 5588 ctl_done((union ctl_io *)ctsio); 5589 goto bailout; 5590 } 5591 5592 /* 5593 * Check to see whether we're configured to send the SYNCHRONIZE 5594 * CACHE command directly to the back end. 5595 */ 5596 mtx_lock(&ctl_softc->ctl_lock); 5597 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5598 && (++(lun->sync_count) >= lun->sync_interval)) { 5599 lun->sync_count = 0; 5600 mtx_unlock(&ctl_softc->ctl_lock); 5601 retval = lun->backend->config_write((union ctl_io *)ctsio); 5602 } else { 5603 mtx_unlock(&ctl_softc->ctl_lock); 5604 ctl_set_success(ctsio); 5605 ctl_done((union ctl_io *)ctsio); 5606 } 5607 5608bailout: 5609 5610 return (retval); 5611} 5612 5613int 5614ctl_format(struct ctl_scsiio *ctsio) 5615{ 5616 struct scsi_format *cdb; 5617 struct ctl_lun *lun; 5618 struct ctl_softc *ctl_softc; 5619 int length, defect_list_len; 5620 5621 CTL_DEBUG_PRINT(("ctl_format\n")); 5622 5623 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5624 ctl_softc = control_softc; 5625 5626 cdb = (struct scsi_format *)ctsio->cdb; 5627 5628 length = 0; 5629 if (cdb->byte2 & SF_FMTDATA) { 5630 if (cdb->byte2 & SF_LONGLIST) 5631 length = sizeof(struct scsi_format_header_long); 5632 else 5633 length = sizeof(struct scsi_format_header_short); 5634 } 5635 5636 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5637 && (length > 0)) { 5638 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5639 ctsio->kern_data_len = length; 5640 ctsio->kern_total_len = length; 5641 ctsio->kern_data_resid = 0; 5642 ctsio->kern_rel_offset = 0; 5643 ctsio->kern_sg_entries = 0; 5644 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5645 ctsio->be_move_done = ctl_config_move_done; 5646 ctl_datamove((union ctl_io *)ctsio); 5647 5648 return (CTL_RETVAL_COMPLETE); 5649 } 5650 5651 defect_list_len = 0; 5652 5653 if (cdb->byte2 & SF_FMTDATA) { 5654 if (cdb->byte2 & SF_LONGLIST) { 5655 struct scsi_format_header_long *header; 5656 5657 header = (struct scsi_format_header_long *) 5658 ctsio->kern_data_ptr; 5659 5660 defect_list_len = scsi_4btoul(header->defect_list_len); 5661 if (defect_list_len != 0) { 5662 ctl_set_invalid_field(ctsio, 5663 /*sks_valid*/ 1, 5664 /*command*/ 0, 5665 /*field*/ 2, 5666 /*bit_valid*/ 0, 5667 /*bit*/ 0); 5668 goto bailout; 5669 } 5670 } else { 5671 struct scsi_format_header_short *header; 5672 5673 header = (struct scsi_format_header_short *) 5674 ctsio->kern_data_ptr; 5675 5676 defect_list_len = scsi_2btoul(header->defect_list_len); 5677 if (defect_list_len != 0) { 5678 ctl_set_invalid_field(ctsio, 5679 /*sks_valid*/ 1, 5680 /*command*/ 0, 5681 /*field*/ 2, 5682 /*bit_valid*/ 0, 5683 /*bit*/ 0); 5684 goto bailout; 5685 } 5686 } 5687 } 5688 5689 /* 5690 * The format command will clear out the "Medium format corrupted" 5691 * status if set by the configuration code. That status is really 5692 * just a way to notify the host that we have lost the media, and 5693 * get them to issue a command that will basically make them think 5694 * they're blowing away the media. 5695 */ 5696 mtx_lock(&ctl_softc->ctl_lock); 5697 lun->flags &= ~CTL_LUN_INOPERABLE; 5698 mtx_unlock(&ctl_softc->ctl_lock); 5699 5700 ctsio->scsi_status = SCSI_STATUS_OK; 5701 ctsio->io_hdr.status = CTL_SUCCESS; 5702bailout: 5703 5704 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5705 free(ctsio->kern_data_ptr, M_CTL); 5706 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5707 } 5708 5709 ctl_done((union ctl_io *)ctsio); 5710 return (CTL_RETVAL_COMPLETE); 5711} 5712 5713int 5714ctl_write_buffer(struct ctl_scsiio *ctsio) 5715{ 5716 struct scsi_write_buffer *cdb; 5717 struct copan_page_header *header; 5718 struct ctl_lun *lun; 5719 struct ctl_softc *ctl_softc; 5720 int buffer_offset, len; 5721 int retval; 5722 5723 header = NULL; 5724 5725 retval = CTL_RETVAL_COMPLETE; 5726 5727 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5728 5729 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5730 ctl_softc = control_softc; 5731 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5732 5733 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5734 ctl_set_invalid_field(ctsio, 5735 /*sks_valid*/ 1, 5736 /*command*/ 1, 5737 /*field*/ 1, 5738 /*bit_valid*/ 1, 5739 /*bit*/ 4); 5740 ctl_done((union ctl_io *)ctsio); 5741 return (CTL_RETVAL_COMPLETE); 5742 } 5743 if (cdb->buffer_id != 0) { 5744 ctl_set_invalid_field(ctsio, 5745 /*sks_valid*/ 1, 5746 /*command*/ 1, 5747 /*field*/ 2, 5748 /*bit_valid*/ 0, 5749 /*bit*/ 0); 5750 ctl_done((union ctl_io *)ctsio); 5751 return (CTL_RETVAL_COMPLETE); 5752 } 5753 5754 len = scsi_3btoul(cdb->length); 5755 buffer_offset = scsi_3btoul(cdb->offset); 5756 5757 if (len > sizeof(lun->write_buffer)) { 5758 ctl_set_invalid_field(ctsio, 5759 /*sks_valid*/ 1, 5760 /*command*/ 1, 5761 /*field*/ 6, 5762 /*bit_valid*/ 0, 5763 /*bit*/ 0); 5764 ctl_done((union ctl_io *)ctsio); 5765 return (CTL_RETVAL_COMPLETE); 5766 } 5767 5768 if (buffer_offset != 0) { 5769 ctl_set_invalid_field(ctsio, 5770 /*sks_valid*/ 1, 5771 /*command*/ 1, 5772 /*field*/ 3, 5773 /*bit_valid*/ 0, 5774 /*bit*/ 0); 5775 ctl_done((union ctl_io *)ctsio); 5776 return (CTL_RETVAL_COMPLETE); 5777 } 5778 5779 /* 5780 * If we've got a kernel request that hasn't been malloced yet, 5781 * malloc it and tell the caller the data buffer is here. 5782 */ 5783 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5784 ctsio->kern_data_ptr = lun->write_buffer; 5785 ctsio->kern_data_len = len; 5786 ctsio->kern_total_len = len; 5787 ctsio->kern_data_resid = 0; 5788 ctsio->kern_rel_offset = 0; 5789 ctsio->kern_sg_entries = 0; 5790 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5791 ctsio->be_move_done = ctl_config_move_done; 5792 ctl_datamove((union ctl_io *)ctsio); 5793 5794 return (CTL_RETVAL_COMPLETE); 5795 } 5796 5797 ctl_done((union ctl_io *)ctsio); 5798 5799 return (CTL_RETVAL_COMPLETE); 5800} 5801 5802int 5803ctl_write_same(struct ctl_scsiio *ctsio) 5804{ 5805 struct ctl_lun *lun; 5806 struct ctl_lba_len_flags *lbalen; 5807 uint64_t lba; 5808 uint32_t num_blocks; 5809 int len, retval; 5810 uint8_t byte2; 5811 5812 retval = CTL_RETVAL_COMPLETE; 5813 5814 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5815 5816 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5817 5818 switch (ctsio->cdb[0]) { 5819 case WRITE_SAME_10: { 5820 struct scsi_write_same_10 *cdb; 5821 5822 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5823 5824 lba = scsi_4btoul(cdb->addr); 5825 num_blocks = scsi_2btoul(cdb->length); 5826 byte2 = cdb->byte2; 5827 break; 5828 } 5829 case WRITE_SAME_16: { 5830 struct scsi_write_same_16 *cdb; 5831 5832 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5833 5834 lba = scsi_8btou64(cdb->addr); 5835 num_blocks = scsi_4btoul(cdb->length); 5836 byte2 = cdb->byte2; 5837 break; 5838 } 5839 default: 5840 /* 5841 * We got a command we don't support. This shouldn't 5842 * happen, commands should be filtered out above us. 5843 */ 5844 ctl_set_invalid_opcode(ctsio); 5845 ctl_done((union ctl_io *)ctsio); 5846 5847 return (CTL_RETVAL_COMPLETE); 5848 break; /* NOTREACHED */ 5849 } 5850 5851 /* 5852 * The first check is to make sure we're in bounds, the second 5853 * check is to catch wrap-around problems. If the lba + num blocks 5854 * is less than the lba, then we've wrapped around and the block 5855 * range is invalid anyway. 5856 */ 5857 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5858 || ((lba + num_blocks) < lba)) { 5859 ctl_set_lba_out_of_range(ctsio); 5860 ctl_done((union ctl_io *)ctsio); 5861 return (CTL_RETVAL_COMPLETE); 5862 } 5863 5864 /* Zero number of blocks means "to the last logical block" */ 5865 if (num_blocks == 0) { 5866 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5867 ctl_set_invalid_field(ctsio, 5868 /*sks_valid*/ 0, 5869 /*command*/ 1, 5870 /*field*/ 0, 5871 /*bit_valid*/ 0, 5872 /*bit*/ 0); 5873 ctl_done((union ctl_io *)ctsio); 5874 return (CTL_RETVAL_COMPLETE); 5875 } 5876 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5877 } 5878 5879 len = lun->be_lun->blocksize; 5880 5881 /* 5882 * If we've got a kernel request that hasn't been malloced yet, 5883 * malloc it and tell the caller the data buffer is here. 5884 */ 5885 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5886 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5887 ctsio->kern_data_len = len; 5888 ctsio->kern_total_len = len; 5889 ctsio->kern_data_resid = 0; 5890 ctsio->kern_rel_offset = 0; 5891 ctsio->kern_sg_entries = 0; 5892 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5893 ctsio->be_move_done = ctl_config_move_done; 5894 ctl_datamove((union ctl_io *)ctsio); 5895 5896 return (CTL_RETVAL_COMPLETE); 5897 } 5898 5899 lbalen = (struct ctl_lba_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5900 lbalen->lba = lba; 5901 lbalen->len = num_blocks; 5902 lbalen->flags = byte2; 5903 retval = lun->backend->config_write((union ctl_io *)ctsio); 5904 5905 return (retval); 5906} 5907 5908int 5909ctl_unmap(struct ctl_scsiio *ctsio) 5910{ 5911 struct ctl_lun *lun; 5912 struct scsi_unmap *cdb; 5913 struct ctl_ptr_len_flags *ptrlen; 5914 struct scsi_unmap_header *hdr; 5915 struct scsi_unmap_desc *buf, *end; 5916 uint64_t lba; 5917 uint32_t num_blocks; 5918 int len, retval; 5919 uint8_t byte2; 5920 5921 retval = CTL_RETVAL_COMPLETE; 5922 5923 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5924 5925 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5926 cdb = (struct scsi_unmap *)ctsio->cdb; 5927 5928 len = scsi_2btoul(cdb->length); 5929 byte2 = cdb->byte2; 5930 5931 /* 5932 * If we've got a kernel request that hasn't been malloced yet, 5933 * malloc it and tell the caller the data buffer is here. 5934 */ 5935 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5936 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5937 ctsio->kern_data_len = len; 5938 ctsio->kern_total_len = len; 5939 ctsio->kern_data_resid = 0; 5940 ctsio->kern_rel_offset = 0; 5941 ctsio->kern_sg_entries = 0; 5942 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5943 ctsio->be_move_done = ctl_config_move_done; 5944 ctl_datamove((union ctl_io *)ctsio); 5945 5946 return (CTL_RETVAL_COMPLETE); 5947 } 5948 5949 len = ctsio->kern_total_len - ctsio->kern_data_resid; 5950 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 5951 if (len < sizeof (*hdr) || 5952 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 5953 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 5954 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 5955 ctl_set_invalid_field(ctsio, 5956 /*sks_valid*/ 0, 5957 /*command*/ 0, 5958 /*field*/ 0, 5959 /*bit_valid*/ 0, 5960 /*bit*/ 0); 5961 ctl_done((union ctl_io *)ctsio); 5962 return (CTL_RETVAL_COMPLETE); 5963 } 5964 len = scsi_2btoul(hdr->desc_length); 5965 buf = (struct scsi_unmap_desc *)(hdr + 1); 5966 end = buf + len / sizeof(*buf); 5967 5968 ptrlen = (struct ctl_ptr_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5969 ptrlen->ptr = (void *)buf; 5970 ptrlen->len = len; 5971 ptrlen->flags = byte2; 5972 5973 for (; buf < end; buf++) { 5974 lba = scsi_8btou64(buf->lba); 5975 num_blocks = scsi_4btoul(buf->length); 5976 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5977 || ((lba + num_blocks) < lba)) { 5978 ctl_set_lba_out_of_range(ctsio); 5979 ctl_done((union ctl_io *)ctsio); 5980 return (CTL_RETVAL_COMPLETE); 5981 } 5982 } 5983 5984 retval = lun->backend->config_write((union ctl_io *)ctsio); 5985 5986 return (retval); 5987} 5988 5989/* 5990 * Note that this function currently doesn't actually do anything inside 5991 * CTL to enforce things if the DQue bit is turned on. 5992 * 5993 * Also note that this function can't be used in the default case, because 5994 * the DQue bit isn't set in the changeable mask for the control mode page 5995 * anyway. This is just here as an example for how to implement a page 5996 * handler, and a placeholder in case we want to allow the user to turn 5997 * tagged queueing on and off. 5998 * 5999 * The D_SENSE bit handling is functional, however, and will turn 6000 * descriptor sense on and off for a given LUN. 6001 */ 6002int 6003ctl_control_page_handler(struct ctl_scsiio *ctsio, 6004 struct ctl_page_index *page_index, uint8_t *page_ptr) 6005{ 6006 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 6007 struct ctl_lun *lun; 6008 struct ctl_softc *softc; 6009 int set_ua; 6010 uint32_t initidx; 6011 6012 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6013 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 6014 set_ua = 0; 6015 6016 user_cp = (struct scsi_control_page *)page_ptr; 6017 current_cp = (struct scsi_control_page *) 6018 (page_index->page_data + (page_index->page_len * 6019 CTL_PAGE_CURRENT)); 6020 saved_cp = (struct scsi_control_page *) 6021 (page_index->page_data + (page_index->page_len * 6022 CTL_PAGE_SAVED)); 6023 6024 softc = control_softc; 6025 6026 mtx_lock(&softc->ctl_lock); 6027 if (((current_cp->rlec & SCP_DSENSE) == 0) 6028 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 6029 /* 6030 * Descriptor sense is currently turned off and the user 6031 * wants to turn it on. 6032 */ 6033 current_cp->rlec |= SCP_DSENSE; 6034 saved_cp->rlec |= SCP_DSENSE; 6035 lun->flags |= CTL_LUN_SENSE_DESC; 6036 set_ua = 1; 6037 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 6038 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 6039 /* 6040 * Descriptor sense is currently turned on, and the user 6041 * wants to turn it off. 6042 */ 6043 current_cp->rlec &= ~SCP_DSENSE; 6044 saved_cp->rlec &= ~SCP_DSENSE; 6045 lun->flags &= ~CTL_LUN_SENSE_DESC; 6046 set_ua = 1; 6047 } 6048 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 6049 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6050#ifdef NEEDTOPORT 6051 csevent_log(CSC_CTL | CSC_SHELF_SW | 6052 CTL_UNTAG_TO_UNTAG, 6053 csevent_LogType_Trace, 6054 csevent_Severity_Information, 6055 csevent_AlertLevel_Green, 6056 csevent_FRU_Firmware, 6057 csevent_FRU_Unknown, 6058 "Received untagged to untagged transition"); 6059#endif /* NEEDTOPORT */ 6060 } else { 6061#ifdef NEEDTOPORT 6062 csevent_log(CSC_CTL | CSC_SHELF_SW | 6063 CTL_UNTAG_TO_TAG, 6064 csevent_LogType_ConfigChange, 6065 csevent_Severity_Information, 6066 csevent_AlertLevel_Green, 6067 csevent_FRU_Firmware, 6068 csevent_FRU_Unknown, 6069 "Received untagged to tagged " 6070 "queueing transition"); 6071#endif /* NEEDTOPORT */ 6072 6073 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6074 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6075 set_ua = 1; 6076 } 6077 } else { 6078 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6079#ifdef NEEDTOPORT 6080 csevent_log(CSC_CTL | CSC_SHELF_SW | 6081 CTL_TAG_TO_UNTAG, 6082 csevent_LogType_ConfigChange, 6083 csevent_Severity_Warning, 6084 csevent_AlertLevel_Yellow, 6085 csevent_FRU_Firmware, 6086 csevent_FRU_Unknown, 6087 "Received tagged queueing to untagged " 6088 "transition"); 6089#endif /* NEEDTOPORT */ 6090 6091 current_cp->queue_flags |= SCP_QUEUE_DQUE; 6092 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 6093 set_ua = 1; 6094 } else { 6095#ifdef NEEDTOPORT 6096 csevent_log(CSC_CTL | CSC_SHELF_SW | 6097 CTL_TAG_TO_TAG, 6098 csevent_LogType_Trace, 6099 csevent_Severity_Information, 6100 csevent_AlertLevel_Green, 6101 csevent_FRU_Firmware, 6102 csevent_FRU_Unknown, 6103 "Received tagged queueing to tagged " 6104 "queueing transition"); 6105#endif /* NEEDTOPORT */ 6106 } 6107 } 6108 if (set_ua != 0) { 6109 int i; 6110 /* 6111 * Let other initiators know that the mode 6112 * parameters for this LUN have changed. 6113 */ 6114 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6115 if (i == initidx) 6116 continue; 6117 6118 lun->pending_sense[i].ua_pending |= 6119 CTL_UA_MODE_CHANGE; 6120 } 6121 } 6122 mtx_unlock(&softc->ctl_lock); 6123 6124 return (0); 6125} 6126 6127int 6128ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6129 struct ctl_page_index *page_index, uint8_t *page_ptr) 6130{ 6131 return (0); 6132} 6133 6134int 6135ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6136 struct ctl_page_index *page_index, int pc) 6137{ 6138 struct copan_power_subpage *page; 6139 6140 page = (struct copan_power_subpage *)page_index->page_data + 6141 (page_index->page_len * pc); 6142 6143 switch (pc) { 6144 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6145 /* 6146 * We don't update the changable bits for this page. 6147 */ 6148 break; 6149 case SMS_PAGE_CTRL_CURRENT >> 6: 6150 case SMS_PAGE_CTRL_DEFAULT >> 6: 6151 case SMS_PAGE_CTRL_SAVED >> 6: 6152#ifdef NEEDTOPORT 6153 ctl_update_power_subpage(page); 6154#endif 6155 break; 6156 default: 6157#ifdef NEEDTOPORT 6158 EPRINT(0, "Invalid PC %d!!", pc); 6159#endif 6160 break; 6161 } 6162 return (0); 6163} 6164 6165 6166int 6167ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6168 struct ctl_page_index *page_index, uint8_t *page_ptr) 6169{ 6170 struct copan_aps_subpage *user_sp; 6171 struct copan_aps_subpage *current_sp; 6172 union ctl_modepage_info *modepage_info; 6173 struct ctl_softc *softc; 6174 struct ctl_lun *lun; 6175 int retval; 6176 6177 retval = CTL_RETVAL_COMPLETE; 6178 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6179 (page_index->page_len * CTL_PAGE_CURRENT)); 6180 softc = control_softc; 6181 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6182 6183 user_sp = (struct copan_aps_subpage *)page_ptr; 6184 6185 modepage_info = (union ctl_modepage_info *) 6186 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6187 6188 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6189 modepage_info->header.subpage = page_index->subpage; 6190 modepage_info->aps.lock_active = user_sp->lock_active; 6191 6192 mtx_lock(&softc->ctl_lock); 6193 6194 /* 6195 * If there is a request to lock the LUN and another LUN is locked 6196 * this is an error. If the requested LUN is already locked ignore 6197 * the request. If no LUN is locked attempt to lock it. 6198 * if there is a request to unlock the LUN and the LUN is currently 6199 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6200 * if another LUN is locked or no LUN is locked. 6201 */ 6202 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6203 if (softc->aps_locked_lun == lun->lun) { 6204 /* 6205 * This LUN is already locked, so we're done. 6206 */ 6207 retval = CTL_RETVAL_COMPLETE; 6208 } else if (softc->aps_locked_lun == 0) { 6209 /* 6210 * No one has the lock, pass the request to the 6211 * backend. 6212 */ 6213 retval = lun->backend->config_write( 6214 (union ctl_io *)ctsio); 6215 } else { 6216 /* 6217 * Someone else has the lock, throw out the request. 6218 */ 6219 ctl_set_already_locked(ctsio); 6220 free(ctsio->kern_data_ptr, M_CTL); 6221 ctl_done((union ctl_io *)ctsio); 6222 6223 /* 6224 * Set the return value so that ctl_do_mode_select() 6225 * won't try to complete the command. We already 6226 * completed it here. 6227 */ 6228 retval = CTL_RETVAL_ERROR; 6229 } 6230 } else if (softc->aps_locked_lun == lun->lun) { 6231 /* 6232 * This LUN is locked, so pass the unlock request to the 6233 * backend. 6234 */ 6235 retval = lun->backend->config_write((union ctl_io *)ctsio); 6236 } 6237 mtx_unlock(&softc->ctl_lock); 6238 6239 return (retval); 6240} 6241 6242int 6243ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6244 struct ctl_page_index *page_index, 6245 uint8_t *page_ptr) 6246{ 6247 uint8_t *c; 6248 int i; 6249 6250 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6251 ctl_time_io_secs = 6252 (c[0] << 8) | 6253 (c[1] << 0) | 6254 0; 6255 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6256 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6257 printf("page data:"); 6258 for (i=0; i<8; i++) 6259 printf(" %.2x",page_ptr[i]); 6260 printf("\n"); 6261 return (0); 6262} 6263 6264int 6265ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6266 struct ctl_page_index *page_index, 6267 int pc) 6268{ 6269 struct copan_debugconf_subpage *page; 6270 6271 page = (struct copan_debugconf_subpage *)page_index->page_data + 6272 (page_index->page_len * pc); 6273 6274 switch (pc) { 6275 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6276 case SMS_PAGE_CTRL_DEFAULT >> 6: 6277 case SMS_PAGE_CTRL_SAVED >> 6: 6278 /* 6279 * We don't update the changable or default bits for this page. 6280 */ 6281 break; 6282 case SMS_PAGE_CTRL_CURRENT >> 6: 6283 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6284 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6285 break; 6286 default: 6287#ifdef NEEDTOPORT 6288 EPRINT(0, "Invalid PC %d!!", pc); 6289#endif /* NEEDTOPORT */ 6290 break; 6291 } 6292 return (0); 6293} 6294 6295 6296static int 6297ctl_do_mode_select(union ctl_io *io) 6298{ 6299 struct scsi_mode_page_header *page_header; 6300 struct ctl_page_index *page_index; 6301 struct ctl_scsiio *ctsio; 6302 int control_dev, page_len; 6303 int page_len_offset, page_len_size; 6304 union ctl_modepage_info *modepage_info; 6305 struct ctl_lun *lun; 6306 int *len_left, *len_used; 6307 int retval, i; 6308 6309 ctsio = &io->scsiio; 6310 page_index = NULL; 6311 page_len = 0; 6312 retval = CTL_RETVAL_COMPLETE; 6313 6314 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6315 6316 if (lun->be_lun->lun_type != T_DIRECT) 6317 control_dev = 1; 6318 else 6319 control_dev = 0; 6320 6321 modepage_info = (union ctl_modepage_info *) 6322 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6323 len_left = &modepage_info->header.len_left; 6324 len_used = &modepage_info->header.len_used; 6325 6326do_next_page: 6327 6328 page_header = (struct scsi_mode_page_header *) 6329 (ctsio->kern_data_ptr + *len_used); 6330 6331 if (*len_left == 0) { 6332 free(ctsio->kern_data_ptr, M_CTL); 6333 ctl_set_success(ctsio); 6334 ctl_done((union ctl_io *)ctsio); 6335 return (CTL_RETVAL_COMPLETE); 6336 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6337 6338 free(ctsio->kern_data_ptr, M_CTL); 6339 ctl_set_param_len_error(ctsio); 6340 ctl_done((union ctl_io *)ctsio); 6341 return (CTL_RETVAL_COMPLETE); 6342 6343 } else if ((page_header->page_code & SMPH_SPF) 6344 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6345 6346 free(ctsio->kern_data_ptr, M_CTL); 6347 ctl_set_param_len_error(ctsio); 6348 ctl_done((union ctl_io *)ctsio); 6349 return (CTL_RETVAL_COMPLETE); 6350 } 6351 6352 6353 /* 6354 * XXX KDM should we do something with the block descriptor? 6355 */ 6356 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6357 6358 if ((control_dev != 0) 6359 && (lun->mode_pages.index[i].page_flags & 6360 CTL_PAGE_FLAG_DISK_ONLY)) 6361 continue; 6362 6363 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6364 (page_header->page_code & SMPH_PC_MASK)) 6365 continue; 6366 6367 /* 6368 * If neither page has a subpage code, then we've got a 6369 * match. 6370 */ 6371 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6372 && ((page_header->page_code & SMPH_SPF) == 0)) { 6373 page_index = &lun->mode_pages.index[i]; 6374 page_len = page_header->page_length; 6375 break; 6376 } 6377 6378 /* 6379 * If both pages have subpages, then the subpage numbers 6380 * have to match. 6381 */ 6382 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6383 && (page_header->page_code & SMPH_SPF)) { 6384 struct scsi_mode_page_header_sp *sph; 6385 6386 sph = (struct scsi_mode_page_header_sp *)page_header; 6387 6388 if (lun->mode_pages.index[i].subpage == 6389 sph->subpage) { 6390 page_index = &lun->mode_pages.index[i]; 6391 page_len = scsi_2btoul(sph->page_length); 6392 break; 6393 } 6394 } 6395 } 6396 6397 /* 6398 * If we couldn't find the page, or if we don't have a mode select 6399 * handler for it, send back an error to the user. 6400 */ 6401 if ((page_index == NULL) 6402 || (page_index->select_handler == NULL)) { 6403 ctl_set_invalid_field(ctsio, 6404 /*sks_valid*/ 1, 6405 /*command*/ 0, 6406 /*field*/ *len_used, 6407 /*bit_valid*/ 0, 6408 /*bit*/ 0); 6409 free(ctsio->kern_data_ptr, M_CTL); 6410 ctl_done((union ctl_io *)ctsio); 6411 return (CTL_RETVAL_COMPLETE); 6412 } 6413 6414 if (page_index->page_code & SMPH_SPF) { 6415 page_len_offset = 2; 6416 page_len_size = 2; 6417 } else { 6418 page_len_size = 1; 6419 page_len_offset = 1; 6420 } 6421 6422 /* 6423 * If the length the initiator gives us isn't the one we specify in 6424 * the mode page header, or if they didn't specify enough data in 6425 * the CDB to avoid truncating this page, kick out the request. 6426 */ 6427 if ((page_len != (page_index->page_len - page_len_offset - 6428 page_len_size)) 6429 || (*len_left < page_index->page_len)) { 6430 6431 6432 ctl_set_invalid_field(ctsio, 6433 /*sks_valid*/ 1, 6434 /*command*/ 0, 6435 /*field*/ *len_used + page_len_offset, 6436 /*bit_valid*/ 0, 6437 /*bit*/ 0); 6438 free(ctsio->kern_data_ptr, M_CTL); 6439 ctl_done((union ctl_io *)ctsio); 6440 return (CTL_RETVAL_COMPLETE); 6441 } 6442 6443 /* 6444 * Run through the mode page, checking to make sure that the bits 6445 * the user changed are actually legal for him to change. 6446 */ 6447 for (i = 0; i < page_index->page_len; i++) { 6448 uint8_t *user_byte, *change_mask, *current_byte; 6449 int bad_bit; 6450 int j; 6451 6452 user_byte = (uint8_t *)page_header + i; 6453 change_mask = page_index->page_data + 6454 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6455 current_byte = page_index->page_data + 6456 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6457 6458 /* 6459 * Check to see whether the user set any bits in this byte 6460 * that he is not allowed to set. 6461 */ 6462 if ((*user_byte & ~(*change_mask)) == 6463 (*current_byte & ~(*change_mask))) 6464 continue; 6465 6466 /* 6467 * Go through bit by bit to determine which one is illegal. 6468 */ 6469 bad_bit = 0; 6470 for (j = 7; j >= 0; j--) { 6471 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6472 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6473 bad_bit = i; 6474 break; 6475 } 6476 } 6477 ctl_set_invalid_field(ctsio, 6478 /*sks_valid*/ 1, 6479 /*command*/ 0, 6480 /*field*/ *len_used + i, 6481 /*bit_valid*/ 1, 6482 /*bit*/ bad_bit); 6483 free(ctsio->kern_data_ptr, M_CTL); 6484 ctl_done((union ctl_io *)ctsio); 6485 return (CTL_RETVAL_COMPLETE); 6486 } 6487 6488 /* 6489 * Decrement these before we call the page handler, since we may 6490 * end up getting called back one way or another before the handler 6491 * returns to this context. 6492 */ 6493 *len_left -= page_index->page_len; 6494 *len_used += page_index->page_len; 6495 6496 retval = page_index->select_handler(ctsio, page_index, 6497 (uint8_t *)page_header); 6498 6499 /* 6500 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6501 * wait until this queued command completes to finish processing 6502 * the mode page. If it returns anything other than 6503 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6504 * already set the sense information, freed the data pointer, and 6505 * completed the io for us. 6506 */ 6507 if (retval != CTL_RETVAL_COMPLETE) 6508 goto bailout_no_done; 6509 6510 /* 6511 * If the initiator sent us more than one page, parse the next one. 6512 */ 6513 if (*len_left > 0) 6514 goto do_next_page; 6515 6516 ctl_set_success(ctsio); 6517 free(ctsio->kern_data_ptr, M_CTL); 6518 ctl_done((union ctl_io *)ctsio); 6519 6520bailout_no_done: 6521 6522 return (CTL_RETVAL_COMPLETE); 6523 6524} 6525 6526int 6527ctl_mode_select(struct ctl_scsiio *ctsio) 6528{ 6529 int param_len, pf, sp; 6530 int header_size, bd_len; 6531 int len_left, len_used; 6532 struct ctl_page_index *page_index; 6533 struct ctl_lun *lun; 6534 int control_dev, page_len; 6535 union ctl_modepage_info *modepage_info; 6536 int retval; 6537 6538 pf = 0; 6539 sp = 0; 6540 page_len = 0; 6541 len_used = 0; 6542 len_left = 0; 6543 retval = 0; 6544 bd_len = 0; 6545 page_index = NULL; 6546 6547 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6548 6549 if (lun->be_lun->lun_type != T_DIRECT) 6550 control_dev = 1; 6551 else 6552 control_dev = 0; 6553 6554 switch (ctsio->cdb[0]) { 6555 case MODE_SELECT_6: { 6556 struct scsi_mode_select_6 *cdb; 6557 6558 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6559 6560 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6561 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6562 6563 param_len = cdb->length; 6564 header_size = sizeof(struct scsi_mode_header_6); 6565 break; 6566 } 6567 case MODE_SELECT_10: { 6568 struct scsi_mode_select_10 *cdb; 6569 6570 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6571 6572 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6573 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6574 6575 param_len = scsi_2btoul(cdb->length); 6576 header_size = sizeof(struct scsi_mode_header_10); 6577 break; 6578 } 6579 default: 6580 ctl_set_invalid_opcode(ctsio); 6581 ctl_done((union ctl_io *)ctsio); 6582 return (CTL_RETVAL_COMPLETE); 6583 break; /* NOTREACHED */ 6584 } 6585 6586 /* 6587 * From SPC-3: 6588 * "A parameter list length of zero indicates that the Data-Out Buffer 6589 * shall be empty. This condition shall not be considered as an error." 6590 */ 6591 if (param_len == 0) { 6592 ctl_set_success(ctsio); 6593 ctl_done((union ctl_io *)ctsio); 6594 return (CTL_RETVAL_COMPLETE); 6595 } 6596 6597 /* 6598 * Since we'll hit this the first time through, prior to 6599 * allocation, we don't need to free a data buffer here. 6600 */ 6601 if (param_len < header_size) { 6602 ctl_set_param_len_error(ctsio); 6603 ctl_done((union ctl_io *)ctsio); 6604 return (CTL_RETVAL_COMPLETE); 6605 } 6606 6607 /* 6608 * Allocate the data buffer and grab the user's data. In theory, 6609 * we shouldn't have to sanity check the parameter list length here 6610 * because the maximum size is 64K. We should be able to malloc 6611 * that much without too many problems. 6612 */ 6613 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6614 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6615 ctsio->kern_data_len = param_len; 6616 ctsio->kern_total_len = param_len; 6617 ctsio->kern_data_resid = 0; 6618 ctsio->kern_rel_offset = 0; 6619 ctsio->kern_sg_entries = 0; 6620 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6621 ctsio->be_move_done = ctl_config_move_done; 6622 ctl_datamove((union ctl_io *)ctsio); 6623 6624 return (CTL_RETVAL_COMPLETE); 6625 } 6626 6627 switch (ctsio->cdb[0]) { 6628 case MODE_SELECT_6: { 6629 struct scsi_mode_header_6 *mh6; 6630 6631 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6632 bd_len = mh6->blk_desc_len; 6633 break; 6634 } 6635 case MODE_SELECT_10: { 6636 struct scsi_mode_header_10 *mh10; 6637 6638 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6639 bd_len = scsi_2btoul(mh10->blk_desc_len); 6640 break; 6641 } 6642 default: 6643 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6644 break; 6645 } 6646 6647 if (param_len < (header_size + bd_len)) { 6648 free(ctsio->kern_data_ptr, M_CTL); 6649 ctl_set_param_len_error(ctsio); 6650 ctl_done((union ctl_io *)ctsio); 6651 return (CTL_RETVAL_COMPLETE); 6652 } 6653 6654 /* 6655 * Set the IO_CONT flag, so that if this I/O gets passed to 6656 * ctl_config_write_done(), it'll get passed back to 6657 * ctl_do_mode_select() for further processing, or completion if 6658 * we're all done. 6659 */ 6660 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6661 ctsio->io_cont = ctl_do_mode_select; 6662 6663 modepage_info = (union ctl_modepage_info *) 6664 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6665 6666 memset(modepage_info, 0, sizeof(*modepage_info)); 6667 6668 len_left = param_len - header_size - bd_len; 6669 len_used = header_size + bd_len; 6670 6671 modepage_info->header.len_left = len_left; 6672 modepage_info->header.len_used = len_used; 6673 6674 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6675} 6676 6677int 6678ctl_mode_sense(struct ctl_scsiio *ctsio) 6679{ 6680 struct ctl_lun *lun; 6681 int pc, page_code, dbd, llba, subpage; 6682 int alloc_len, page_len, header_len, total_len; 6683 struct scsi_mode_block_descr *block_desc; 6684 struct ctl_page_index *page_index; 6685 int control_dev; 6686 6687 dbd = 0; 6688 llba = 0; 6689 block_desc = NULL; 6690 page_index = NULL; 6691 6692 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6693 6694 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6695 6696 if (lun->be_lun->lun_type != T_DIRECT) 6697 control_dev = 1; 6698 else 6699 control_dev = 0; 6700 6701 switch (ctsio->cdb[0]) { 6702 case MODE_SENSE_6: { 6703 struct scsi_mode_sense_6 *cdb; 6704 6705 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6706 6707 header_len = sizeof(struct scsi_mode_hdr_6); 6708 if (cdb->byte2 & SMS_DBD) 6709 dbd = 1; 6710 else 6711 header_len += sizeof(struct scsi_mode_block_descr); 6712 6713 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6714 page_code = cdb->page & SMS_PAGE_CODE; 6715 subpage = cdb->subpage; 6716 alloc_len = cdb->length; 6717 break; 6718 } 6719 case MODE_SENSE_10: { 6720 struct scsi_mode_sense_10 *cdb; 6721 6722 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6723 6724 header_len = sizeof(struct scsi_mode_hdr_10); 6725 6726 if (cdb->byte2 & SMS_DBD) 6727 dbd = 1; 6728 else 6729 header_len += sizeof(struct scsi_mode_block_descr); 6730 if (cdb->byte2 & SMS10_LLBAA) 6731 llba = 1; 6732 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6733 page_code = cdb->page & SMS_PAGE_CODE; 6734 subpage = cdb->subpage; 6735 alloc_len = scsi_2btoul(cdb->length); 6736 break; 6737 } 6738 default: 6739 ctl_set_invalid_opcode(ctsio); 6740 ctl_done((union ctl_io *)ctsio); 6741 return (CTL_RETVAL_COMPLETE); 6742 break; /* NOTREACHED */ 6743 } 6744 6745 /* 6746 * We have to make a first pass through to calculate the size of 6747 * the pages that match the user's query. Then we allocate enough 6748 * memory to hold it, and actually copy the data into the buffer. 6749 */ 6750 switch (page_code) { 6751 case SMS_ALL_PAGES_PAGE: { 6752 int i; 6753 6754 page_len = 0; 6755 6756 /* 6757 * At the moment, values other than 0 and 0xff here are 6758 * reserved according to SPC-3. 6759 */ 6760 if ((subpage != SMS_SUBPAGE_PAGE_0) 6761 && (subpage != SMS_SUBPAGE_ALL)) { 6762 ctl_set_invalid_field(ctsio, 6763 /*sks_valid*/ 1, 6764 /*command*/ 1, 6765 /*field*/ 3, 6766 /*bit_valid*/ 0, 6767 /*bit*/ 0); 6768 ctl_done((union ctl_io *)ctsio); 6769 return (CTL_RETVAL_COMPLETE); 6770 } 6771 6772 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6773 if ((control_dev != 0) 6774 && (lun->mode_pages.index[i].page_flags & 6775 CTL_PAGE_FLAG_DISK_ONLY)) 6776 continue; 6777 6778 /* 6779 * We don't use this subpage if the user didn't 6780 * request all subpages. 6781 */ 6782 if ((lun->mode_pages.index[i].subpage != 0) 6783 && (subpage == SMS_SUBPAGE_PAGE_0)) 6784 continue; 6785 6786#if 0 6787 printf("found page %#x len %d\n", 6788 lun->mode_pages.index[i].page_code & 6789 SMPH_PC_MASK, 6790 lun->mode_pages.index[i].page_len); 6791#endif 6792 page_len += lun->mode_pages.index[i].page_len; 6793 } 6794 break; 6795 } 6796 default: { 6797 int i; 6798 6799 page_len = 0; 6800 6801 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6802 /* Look for the right page code */ 6803 if ((lun->mode_pages.index[i].page_code & 6804 SMPH_PC_MASK) != page_code) 6805 continue; 6806 6807 /* Look for the right subpage or the subpage wildcard*/ 6808 if ((lun->mode_pages.index[i].subpage != subpage) 6809 && (subpage != SMS_SUBPAGE_ALL)) 6810 continue; 6811 6812 /* Make sure the page is supported for this dev type */ 6813 if ((control_dev != 0) 6814 && (lun->mode_pages.index[i].page_flags & 6815 CTL_PAGE_FLAG_DISK_ONLY)) 6816 continue; 6817 6818#if 0 6819 printf("found page %#x len %d\n", 6820 lun->mode_pages.index[i].page_code & 6821 SMPH_PC_MASK, 6822 lun->mode_pages.index[i].page_len); 6823#endif 6824 6825 page_len += lun->mode_pages.index[i].page_len; 6826 } 6827 6828 if (page_len == 0) { 6829 ctl_set_invalid_field(ctsio, 6830 /*sks_valid*/ 1, 6831 /*command*/ 1, 6832 /*field*/ 2, 6833 /*bit_valid*/ 1, 6834 /*bit*/ 5); 6835 ctl_done((union ctl_io *)ctsio); 6836 return (CTL_RETVAL_COMPLETE); 6837 } 6838 break; 6839 } 6840 } 6841 6842 total_len = header_len + page_len; 6843#if 0 6844 printf("header_len = %d, page_len = %d, total_len = %d\n", 6845 header_len, page_len, total_len); 6846#endif 6847 6848 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6849 ctsio->kern_sg_entries = 0; 6850 ctsio->kern_data_resid = 0; 6851 ctsio->kern_rel_offset = 0; 6852 if (total_len < alloc_len) { 6853 ctsio->residual = alloc_len - total_len; 6854 ctsio->kern_data_len = total_len; 6855 ctsio->kern_total_len = total_len; 6856 } else { 6857 ctsio->residual = 0; 6858 ctsio->kern_data_len = alloc_len; 6859 ctsio->kern_total_len = alloc_len; 6860 } 6861 6862 switch (ctsio->cdb[0]) { 6863 case MODE_SENSE_6: { 6864 struct scsi_mode_hdr_6 *header; 6865 6866 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6867 6868 header->datalen = ctl_min(total_len - 1, 254); 6869 6870 if (dbd) 6871 header->block_descr_len = 0; 6872 else 6873 header->block_descr_len = 6874 sizeof(struct scsi_mode_block_descr); 6875 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6876 break; 6877 } 6878 case MODE_SENSE_10: { 6879 struct scsi_mode_hdr_10 *header; 6880 int datalen; 6881 6882 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6883 6884 datalen = ctl_min(total_len - 2, 65533); 6885 scsi_ulto2b(datalen, header->datalen); 6886 if (dbd) 6887 scsi_ulto2b(0, header->block_descr_len); 6888 else 6889 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6890 header->block_descr_len); 6891 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6892 break; 6893 } 6894 default: 6895 panic("invalid CDB type %#x", ctsio->cdb[0]); 6896 break; /* NOTREACHED */ 6897 } 6898 6899 /* 6900 * If we've got a disk, use its blocksize in the block 6901 * descriptor. Otherwise, just set it to 0. 6902 */ 6903 if (dbd == 0) { 6904 if (control_dev != 0) 6905 scsi_ulto3b(lun->be_lun->blocksize, 6906 block_desc->block_len); 6907 else 6908 scsi_ulto3b(0, block_desc->block_len); 6909 } 6910 6911 switch (page_code) { 6912 case SMS_ALL_PAGES_PAGE: { 6913 int i, data_used; 6914 6915 data_used = header_len; 6916 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6917 struct ctl_page_index *page_index; 6918 6919 page_index = &lun->mode_pages.index[i]; 6920 6921 if ((control_dev != 0) 6922 && (page_index->page_flags & 6923 CTL_PAGE_FLAG_DISK_ONLY)) 6924 continue; 6925 6926 /* 6927 * We don't use this subpage if the user didn't 6928 * request all subpages. We already checked (above) 6929 * to make sure the user only specified a subpage 6930 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6931 */ 6932 if ((page_index->subpage != 0) 6933 && (subpage == SMS_SUBPAGE_PAGE_0)) 6934 continue; 6935 6936 /* 6937 * Call the handler, if it exists, to update the 6938 * page to the latest values. 6939 */ 6940 if (page_index->sense_handler != NULL) 6941 page_index->sense_handler(ctsio, page_index,pc); 6942 6943 memcpy(ctsio->kern_data_ptr + data_used, 6944 page_index->page_data + 6945 (page_index->page_len * pc), 6946 page_index->page_len); 6947 data_used += page_index->page_len; 6948 } 6949 break; 6950 } 6951 default: { 6952 int i, data_used; 6953 6954 data_used = header_len; 6955 6956 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6957 struct ctl_page_index *page_index; 6958 6959 page_index = &lun->mode_pages.index[i]; 6960 6961 /* Look for the right page code */ 6962 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6963 continue; 6964 6965 /* Look for the right subpage or the subpage wildcard*/ 6966 if ((page_index->subpage != subpage) 6967 && (subpage != SMS_SUBPAGE_ALL)) 6968 continue; 6969 6970 /* Make sure the page is supported for this dev type */ 6971 if ((control_dev != 0) 6972 && (page_index->page_flags & 6973 CTL_PAGE_FLAG_DISK_ONLY)) 6974 continue; 6975 6976 /* 6977 * Call the handler, if it exists, to update the 6978 * page to the latest values. 6979 */ 6980 if (page_index->sense_handler != NULL) 6981 page_index->sense_handler(ctsio, page_index,pc); 6982 6983 memcpy(ctsio->kern_data_ptr + data_used, 6984 page_index->page_data + 6985 (page_index->page_len * pc), 6986 page_index->page_len); 6987 data_used += page_index->page_len; 6988 } 6989 break; 6990 } 6991 } 6992 6993 ctsio->scsi_status = SCSI_STATUS_OK; 6994 6995 ctsio->be_move_done = ctl_config_move_done; 6996 ctl_datamove((union ctl_io *)ctsio); 6997 6998 return (CTL_RETVAL_COMPLETE); 6999} 7000 7001int 7002ctl_read_capacity(struct ctl_scsiio *ctsio) 7003{ 7004 struct scsi_read_capacity *cdb; 7005 struct scsi_read_capacity_data *data; 7006 struct ctl_lun *lun; 7007 uint32_t lba; 7008 7009 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 7010 7011 cdb = (struct scsi_read_capacity *)ctsio->cdb; 7012 7013 lba = scsi_4btoul(cdb->addr); 7014 if (((cdb->pmi & SRC_PMI) == 0) 7015 && (lba != 0)) { 7016 ctl_set_invalid_field(/*ctsio*/ ctsio, 7017 /*sks_valid*/ 1, 7018 /*command*/ 1, 7019 /*field*/ 2, 7020 /*bit_valid*/ 0, 7021 /*bit*/ 0); 7022 ctl_done((union ctl_io *)ctsio); 7023 return (CTL_RETVAL_COMPLETE); 7024 } 7025 7026 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7027 7028 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7029 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 7030 ctsio->residual = 0; 7031 ctsio->kern_data_len = sizeof(*data); 7032 ctsio->kern_total_len = sizeof(*data); 7033 ctsio->kern_data_resid = 0; 7034 ctsio->kern_rel_offset = 0; 7035 ctsio->kern_sg_entries = 0; 7036 7037 /* 7038 * If the maximum LBA is greater than 0xfffffffe, the user must 7039 * issue a SERVICE ACTION IN (16) command, with the read capacity 7040 * serivce action set. 7041 */ 7042 if (lun->be_lun->maxlba > 0xfffffffe) 7043 scsi_ulto4b(0xffffffff, data->addr); 7044 else 7045 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 7046 7047 /* 7048 * XXX KDM this may not be 512 bytes... 7049 */ 7050 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7051 7052 ctsio->scsi_status = SCSI_STATUS_OK; 7053 7054 ctsio->be_move_done = ctl_config_move_done; 7055 ctl_datamove((union ctl_io *)ctsio); 7056 7057 return (CTL_RETVAL_COMPLETE); 7058} 7059 7060static int 7061ctl_read_capacity_16(struct ctl_scsiio *ctsio) 7062{ 7063 struct scsi_read_capacity_16 *cdb; 7064 struct scsi_read_capacity_data_long *data; 7065 struct ctl_lun *lun; 7066 uint64_t lba; 7067 uint32_t alloc_len; 7068 7069 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 7070 7071 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 7072 7073 alloc_len = scsi_4btoul(cdb->alloc_len); 7074 lba = scsi_8btou64(cdb->addr); 7075 7076 if ((cdb->reladr & SRC16_PMI) 7077 && (lba != 0)) { 7078 ctl_set_invalid_field(/*ctsio*/ ctsio, 7079 /*sks_valid*/ 1, 7080 /*command*/ 1, 7081 /*field*/ 2, 7082 /*bit_valid*/ 0, 7083 /*bit*/ 0); 7084 ctl_done((union ctl_io *)ctsio); 7085 return (CTL_RETVAL_COMPLETE); 7086 } 7087 7088 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7089 7090 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7091 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 7092 7093 if (sizeof(*data) < alloc_len) { 7094 ctsio->residual = alloc_len - sizeof(*data); 7095 ctsio->kern_data_len = sizeof(*data); 7096 ctsio->kern_total_len = sizeof(*data); 7097 } else { 7098 ctsio->residual = 0; 7099 ctsio->kern_data_len = alloc_len; 7100 ctsio->kern_total_len = alloc_len; 7101 } 7102 ctsio->kern_data_resid = 0; 7103 ctsio->kern_rel_offset = 0; 7104 ctsio->kern_sg_entries = 0; 7105 7106 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7107 /* XXX KDM this may not be 512 bytes... */ 7108 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7109 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7110 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7111 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7112 data->lalba_lbp[0] |= SRC16_LBPME; 7113 7114 ctsio->scsi_status = SCSI_STATUS_OK; 7115 7116 ctsio->be_move_done = ctl_config_move_done; 7117 ctl_datamove((union ctl_io *)ctsio); 7118 7119 return (CTL_RETVAL_COMPLETE); 7120} 7121 7122int 7123ctl_service_action_in(struct ctl_scsiio *ctsio) 7124{ 7125 struct scsi_service_action_in *cdb; 7126 int retval; 7127 7128 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 7129 7130 cdb = (struct scsi_service_action_in *)ctsio->cdb; 7131 7132 retval = CTL_RETVAL_COMPLETE; 7133 7134 switch (cdb->service_action) { 7135 case SRC16_SERVICE_ACTION: 7136 retval = ctl_read_capacity_16(ctsio); 7137 break; 7138 default: 7139 ctl_set_invalid_field(/*ctsio*/ ctsio, 7140 /*sks_valid*/ 1, 7141 /*command*/ 1, 7142 /*field*/ 1, 7143 /*bit_valid*/ 1, 7144 /*bit*/ 4); 7145 ctl_done((union ctl_io *)ctsio); 7146 break; 7147 } 7148 7149 return (retval); 7150} 7151 7152int 7153ctl_maintenance_in(struct ctl_scsiio *ctsio) 7154{ 7155 struct scsi_maintenance_in *cdb; 7156 int retval; 7157 int alloc_len, total_len = 0; 7158 int num_target_port_groups, single; 7159 struct ctl_lun *lun; 7160 struct ctl_softc *softc; 7161 struct scsi_target_group_data *rtg_ptr; 7162 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 7163 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 7164 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 7165 7166 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 7167 7168 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 7169 softc = control_softc; 7170 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7171 7172 retval = CTL_RETVAL_COMPLETE; 7173 7174 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 7175 ctl_set_invalid_field(/*ctsio*/ ctsio, 7176 /*sks_valid*/ 1, 7177 /*command*/ 1, 7178 /*field*/ 1, 7179 /*bit_valid*/ 1, 7180 /*bit*/ 4); 7181 ctl_done((union ctl_io *)ctsio); 7182 return(retval); 7183 } 7184 7185 mtx_lock(&softc->ctl_lock); 7186 single = ctl_is_single; 7187 mtx_unlock(&softc->ctl_lock); 7188 7189 if (single) 7190 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 7191 else 7192 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7193 7194 total_len = sizeof(struct scsi_target_group_data) + 7195 sizeof(struct scsi_target_port_group_descriptor) * 7196 num_target_port_groups + 7197 sizeof(struct scsi_target_port_descriptor) * 7198 NUM_PORTS_PER_GRP * num_target_port_groups; 7199 7200 alloc_len = scsi_4btoul(cdb->length); 7201 7202 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7203 7204 ctsio->kern_sg_entries = 0; 7205 7206 if (total_len < alloc_len) { 7207 ctsio->residual = alloc_len - total_len; 7208 ctsio->kern_data_len = total_len; 7209 ctsio->kern_total_len = total_len; 7210 } else { 7211 ctsio->residual = 0; 7212 ctsio->kern_data_len = alloc_len; 7213 ctsio->kern_total_len = alloc_len; 7214 } 7215 ctsio->kern_data_resid = 0; 7216 ctsio->kern_rel_offset = 0; 7217 7218 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7219 7220 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7221 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7222 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7223 &tp_desc_ptr1_1->desc_list[0]; 7224 7225 if (single == 0) { 7226 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7227 &tp_desc_ptr1_2->desc_list[0]; 7228 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7229 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7230 &tp_desc_ptr2_1->desc_list[0]; 7231 } else { 7232 tpg_desc_ptr2 = NULL; 7233 tp_desc_ptr2_1 = NULL; 7234 tp_desc_ptr2_2 = NULL; 7235 } 7236 7237 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7238 if (single == 0) { 7239 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7240 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7241 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7242 tpg_desc_ptr2->pref_state = 7243 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7244 } else { 7245 tpg_desc_ptr1->pref_state = 7246 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7247 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7248 } 7249 } else { 7250 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7251 tpg_desc_ptr1->pref_state = 7252 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7253 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7254 } else { 7255 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7256 tpg_desc_ptr2->pref_state = 7257 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7258 } 7259 } 7260 } else { 7261 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7262 } 7263 tpg_desc_ptr1->support = 0; 7264 tpg_desc_ptr1->target_port_group[1] = 1; 7265 tpg_desc_ptr1->status = TPG_IMPLICIT; 7266 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7267 7268 if (single == 0) { 7269 tpg_desc_ptr2->support = 0; 7270 tpg_desc_ptr2->target_port_group[1] = 2; 7271 tpg_desc_ptr2->status = TPG_IMPLICIT; 7272 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7273 7274 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7275 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7276 7277 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7278 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7279 } else { 7280 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7281 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7282 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7283 } else { 7284 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7285 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7286 } 7287 } 7288 7289 ctsio->be_move_done = ctl_config_move_done; 7290 7291 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7292 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7293 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7294 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7295 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7296 7297 ctl_datamove((union ctl_io *)ctsio); 7298 return(retval); 7299} 7300 7301int 7302ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7303{ 7304 struct scsi_per_res_in *cdb; 7305 int alloc_len, total_len = 0; 7306 /* struct scsi_per_res_in_rsrv in_data; */ 7307 struct ctl_lun *lun; 7308 struct ctl_softc *softc; 7309 7310 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7311 7312 softc = control_softc; 7313 7314 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7315 7316 alloc_len = scsi_2btoul(cdb->length); 7317 7318 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7319 7320retry: 7321 mtx_lock(&softc->ctl_lock); 7322 switch (cdb->action) { 7323 case SPRI_RK: /* read keys */ 7324 total_len = sizeof(struct scsi_per_res_in_keys) + 7325 lun->pr_key_count * 7326 sizeof(struct scsi_per_res_key); 7327 break; 7328 case SPRI_RR: /* read reservation */ 7329 if (lun->flags & CTL_LUN_PR_RESERVED) 7330 total_len = sizeof(struct scsi_per_res_in_rsrv); 7331 else 7332 total_len = sizeof(struct scsi_per_res_in_header); 7333 break; 7334 case SPRI_RC: /* report capabilities */ 7335 total_len = sizeof(struct scsi_per_res_cap); 7336 break; 7337 case SPRI_RS: /* read full status */ 7338 default: 7339 mtx_unlock(&softc->ctl_lock); 7340 ctl_set_invalid_field(ctsio, 7341 /*sks_valid*/ 1, 7342 /*command*/ 1, 7343 /*field*/ 1, 7344 /*bit_valid*/ 1, 7345 /*bit*/ 0); 7346 ctl_done((union ctl_io *)ctsio); 7347 return (CTL_RETVAL_COMPLETE); 7348 break; /* NOTREACHED */ 7349 } 7350 mtx_unlock(&softc->ctl_lock); 7351 7352 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7353 7354 if (total_len < alloc_len) { 7355 ctsio->residual = alloc_len - total_len; 7356 ctsio->kern_data_len = total_len; 7357 ctsio->kern_total_len = total_len; 7358 } else { 7359 ctsio->residual = 0; 7360 ctsio->kern_data_len = alloc_len; 7361 ctsio->kern_total_len = alloc_len; 7362 } 7363 7364 ctsio->kern_data_resid = 0; 7365 ctsio->kern_rel_offset = 0; 7366 ctsio->kern_sg_entries = 0; 7367 7368 mtx_lock(&softc->ctl_lock); 7369 switch (cdb->action) { 7370 case SPRI_RK: { // read keys 7371 struct scsi_per_res_in_keys *res_keys; 7372 int i, key_count; 7373 7374 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7375 7376 /* 7377 * We had to drop the lock to allocate our buffer, which 7378 * leaves time for someone to come in with another 7379 * persistent reservation. (That is unlikely, though, 7380 * since this should be the only persistent reservation 7381 * command active right now.) 7382 */ 7383 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7384 (lun->pr_key_count * 7385 sizeof(struct scsi_per_res_key)))){ 7386 mtx_unlock(&softc->ctl_lock); 7387 free(ctsio->kern_data_ptr, M_CTL); 7388 printf("%s: reservation length changed, retrying\n", 7389 __func__); 7390 goto retry; 7391 } 7392 7393 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7394 7395 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7396 lun->pr_key_count, res_keys->header.length); 7397 7398 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7399 if (!lun->per_res[i].registered) 7400 continue; 7401 7402 /* 7403 * We used lun->pr_key_count to calculate the 7404 * size to allocate. If it turns out the number of 7405 * initiators with the registered flag set is 7406 * larger than that (i.e. they haven't been kept in 7407 * sync), we've got a problem. 7408 */ 7409 if (key_count >= lun->pr_key_count) { 7410#ifdef NEEDTOPORT 7411 csevent_log(CSC_CTL | CSC_SHELF_SW | 7412 CTL_PR_ERROR, 7413 csevent_LogType_Fault, 7414 csevent_AlertLevel_Yellow, 7415 csevent_FRU_ShelfController, 7416 csevent_FRU_Firmware, 7417 csevent_FRU_Unknown, 7418 "registered keys %d >= key " 7419 "count %d", key_count, 7420 lun->pr_key_count); 7421#endif 7422 key_count++; 7423 continue; 7424 } 7425 memcpy(res_keys->keys[key_count].key, 7426 lun->per_res[i].res_key.key, 7427 ctl_min(sizeof(res_keys->keys[key_count].key), 7428 sizeof(lun->per_res[i].res_key))); 7429 key_count++; 7430 } 7431 break; 7432 } 7433 case SPRI_RR: { // read reservation 7434 struct scsi_per_res_in_rsrv *res; 7435 int tmp_len, header_only; 7436 7437 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7438 7439 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7440 7441 if (lun->flags & CTL_LUN_PR_RESERVED) 7442 { 7443 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7444 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7445 res->header.length); 7446 header_only = 0; 7447 } else { 7448 tmp_len = sizeof(struct scsi_per_res_in_header); 7449 scsi_ulto4b(0, res->header.length); 7450 header_only = 1; 7451 } 7452 7453 /* 7454 * We had to drop the lock to allocate our buffer, which 7455 * leaves time for someone to come in with another 7456 * persistent reservation. (That is unlikely, though, 7457 * since this should be the only persistent reservation 7458 * command active right now.) 7459 */ 7460 if (tmp_len != total_len) { 7461 mtx_unlock(&softc->ctl_lock); 7462 free(ctsio->kern_data_ptr, M_CTL); 7463 printf("%s: reservation status changed, retrying\n", 7464 __func__); 7465 goto retry; 7466 } 7467 7468 /* 7469 * No reservation held, so we're done. 7470 */ 7471 if (header_only != 0) 7472 break; 7473 7474 /* 7475 * If the registration is an All Registrants type, the key 7476 * is 0, since it doesn't really matter. 7477 */ 7478 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7479 memcpy(res->data.reservation, 7480 &lun->per_res[lun->pr_res_idx].res_key, 7481 sizeof(struct scsi_per_res_key)); 7482 } 7483 res->data.scopetype = lun->res_type; 7484 break; 7485 } 7486 case SPRI_RC: //report capabilities 7487 { 7488 struct scsi_per_res_cap *res_cap; 7489 uint16_t type_mask; 7490 7491 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7492 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7493 res_cap->flags2 |= SPRI_TMV; 7494 type_mask = SPRI_TM_WR_EX_AR | 7495 SPRI_TM_EX_AC_RO | 7496 SPRI_TM_WR_EX_RO | 7497 SPRI_TM_EX_AC | 7498 SPRI_TM_WR_EX | 7499 SPRI_TM_EX_AC_AR; 7500 scsi_ulto2b(type_mask, res_cap->type_mask); 7501 break; 7502 } 7503 case SPRI_RS: //read full status 7504 default: 7505 /* 7506 * This is a bug, because we just checked for this above, 7507 * and should have returned an error. 7508 */ 7509 panic("Invalid PR type %x", cdb->action); 7510 break; /* NOTREACHED */ 7511 } 7512 mtx_unlock(&softc->ctl_lock); 7513 7514 ctsio->be_move_done = ctl_config_move_done; 7515 7516 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7517 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7518 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7519 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7520 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7521 7522 ctl_datamove((union ctl_io *)ctsio); 7523 7524 return (CTL_RETVAL_COMPLETE); 7525} 7526 7527/* 7528 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7529 * it should return. 7530 */ 7531static int 7532ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7533 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7534 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7535 struct scsi_per_res_out_parms* param) 7536{ 7537 union ctl_ha_msg persis_io; 7538 int retval, i; 7539 int isc_retval; 7540 7541 retval = 0; 7542 7543 if (sa_res_key == 0) { 7544 mtx_lock(&softc->ctl_lock); 7545 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7546 /* validate scope and type */ 7547 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7548 SPR_LU_SCOPE) { 7549 mtx_unlock(&softc->ctl_lock); 7550 ctl_set_invalid_field(/*ctsio*/ ctsio, 7551 /*sks_valid*/ 1, 7552 /*command*/ 1, 7553 /*field*/ 2, 7554 /*bit_valid*/ 1, 7555 /*bit*/ 4); 7556 ctl_done((union ctl_io *)ctsio); 7557 return (1); 7558 } 7559 7560 if (type>8 || type==2 || type==4 || type==0) { 7561 mtx_unlock(&softc->ctl_lock); 7562 ctl_set_invalid_field(/*ctsio*/ ctsio, 7563 /*sks_valid*/ 1, 7564 /*command*/ 1, 7565 /*field*/ 2, 7566 /*bit_valid*/ 1, 7567 /*bit*/ 0); 7568 ctl_done((union ctl_io *)ctsio); 7569 return (1); 7570 } 7571 7572 /* temporarily unregister this nexus */ 7573 lun->per_res[residx].registered = 0; 7574 7575 /* 7576 * Unregister everybody else and build UA for 7577 * them 7578 */ 7579 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7580 if (lun->per_res[i].registered == 0) 7581 continue; 7582 7583 if (!persis_offset 7584 && i <CTL_MAX_INITIATORS) 7585 lun->pending_sense[i].ua_pending |= 7586 CTL_UA_REG_PREEMPT; 7587 else if (persis_offset 7588 && i >= persis_offset) 7589 lun->pending_sense[i-persis_offset 7590 ].ua_pending |= 7591 CTL_UA_REG_PREEMPT; 7592 lun->per_res[i].registered = 0; 7593 memset(&lun->per_res[i].res_key, 0, 7594 sizeof(struct scsi_per_res_key)); 7595 } 7596 lun->per_res[residx].registered = 1; 7597 lun->pr_key_count = 1; 7598 lun->res_type = type; 7599 if (lun->res_type != SPR_TYPE_WR_EX_AR 7600 && lun->res_type != SPR_TYPE_EX_AC_AR) 7601 lun->pr_res_idx = residx; 7602 7603 mtx_unlock(&softc->ctl_lock); 7604 /* send msg to other side */ 7605 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7606 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7607 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7608 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7609 persis_io.pr.pr_info.res_type = type; 7610 memcpy(persis_io.pr.pr_info.sa_res_key, 7611 param->serv_act_res_key, 7612 sizeof(param->serv_act_res_key)); 7613 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7614 &persis_io, sizeof(persis_io), 0)) > 7615 CTL_HA_STATUS_SUCCESS) { 7616 printf("CTL:Persis Out error returned " 7617 "from ctl_ha_msg_send %d\n", 7618 isc_retval); 7619 } 7620 } else { 7621 /* not all registrants */ 7622 mtx_unlock(&softc->ctl_lock); 7623 free(ctsio->kern_data_ptr, M_CTL); 7624 ctl_set_invalid_field(ctsio, 7625 /*sks_valid*/ 1, 7626 /*command*/ 0, 7627 /*field*/ 8, 7628 /*bit_valid*/ 0, 7629 /*bit*/ 0); 7630 ctl_done((union ctl_io *)ctsio); 7631 return (1); 7632 } 7633 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7634 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7635 int found = 0; 7636 7637 mtx_lock(&softc->ctl_lock); 7638 if (res_key == sa_res_key) { 7639 /* special case */ 7640 /* 7641 * The spec implies this is not good but doesn't 7642 * say what to do. There are two choices either 7643 * generate a res conflict or check condition 7644 * with illegal field in parameter data. Since 7645 * that is what is done when the sa_res_key is 7646 * zero I'll take that approach since this has 7647 * to do with the sa_res_key. 7648 */ 7649 mtx_unlock(&softc->ctl_lock); 7650 free(ctsio->kern_data_ptr, M_CTL); 7651 ctl_set_invalid_field(ctsio, 7652 /*sks_valid*/ 1, 7653 /*command*/ 0, 7654 /*field*/ 8, 7655 /*bit_valid*/ 0, 7656 /*bit*/ 0); 7657 ctl_done((union ctl_io *)ctsio); 7658 return (1); 7659 } 7660 7661 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7662 if (lun->per_res[i].registered 7663 && memcmp(param->serv_act_res_key, 7664 lun->per_res[i].res_key.key, 7665 sizeof(struct scsi_per_res_key)) != 0) 7666 continue; 7667 7668 found = 1; 7669 lun->per_res[i].registered = 0; 7670 memset(&lun->per_res[i].res_key, 0, 7671 sizeof(struct scsi_per_res_key)); 7672 lun->pr_key_count--; 7673 7674 if (!persis_offset 7675 && i < CTL_MAX_INITIATORS) 7676 lun->pending_sense[i].ua_pending |= 7677 CTL_UA_REG_PREEMPT; 7678 else if (persis_offset 7679 && i >= persis_offset) 7680 lun->pending_sense[i-persis_offset].ua_pending|= 7681 CTL_UA_REG_PREEMPT; 7682 } 7683 mtx_unlock(&softc->ctl_lock); 7684 if (!found) { 7685 free(ctsio->kern_data_ptr, M_CTL); 7686 ctl_set_reservation_conflict(ctsio); 7687 ctl_done((union ctl_io *)ctsio); 7688 return (CTL_RETVAL_COMPLETE); 7689 } 7690 /* send msg to other side */ 7691 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7692 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7693 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7694 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7695 persis_io.pr.pr_info.res_type = type; 7696 memcpy(persis_io.pr.pr_info.sa_res_key, 7697 param->serv_act_res_key, 7698 sizeof(param->serv_act_res_key)); 7699 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7700 &persis_io, sizeof(persis_io), 0)) > 7701 CTL_HA_STATUS_SUCCESS) { 7702 printf("CTL:Persis Out error returned from " 7703 "ctl_ha_msg_send %d\n", isc_retval); 7704 } 7705 } else { 7706 /* Reserved but not all registrants */ 7707 /* sa_res_key is res holder */ 7708 if (memcmp(param->serv_act_res_key, 7709 lun->per_res[lun->pr_res_idx].res_key.key, 7710 sizeof(struct scsi_per_res_key)) == 0) { 7711 /* validate scope and type */ 7712 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7713 SPR_LU_SCOPE) { 7714 ctl_set_invalid_field(/*ctsio*/ ctsio, 7715 /*sks_valid*/ 1, 7716 /*command*/ 1, 7717 /*field*/ 2, 7718 /*bit_valid*/ 1, 7719 /*bit*/ 4); 7720 ctl_done((union ctl_io *)ctsio); 7721 return (1); 7722 } 7723 7724 if (type>8 || type==2 || type==4 || type==0) { 7725 ctl_set_invalid_field(/*ctsio*/ ctsio, 7726 /*sks_valid*/ 1, 7727 /*command*/ 1, 7728 /*field*/ 2, 7729 /*bit_valid*/ 1, 7730 /*bit*/ 0); 7731 ctl_done((union ctl_io *)ctsio); 7732 return (1); 7733 } 7734 7735 /* 7736 * Do the following: 7737 * if sa_res_key != res_key remove all 7738 * registrants w/sa_res_key and generate UA 7739 * for these registrants(Registrations 7740 * Preempted) if it wasn't an exclusive 7741 * reservation generate UA(Reservations 7742 * Preempted) for all other registered nexuses 7743 * if the type has changed. Establish the new 7744 * reservation and holder. If res_key and 7745 * sa_res_key are the same do the above 7746 * except don't unregister the res holder. 7747 */ 7748 7749 /* 7750 * Temporarily unregister so it won't get 7751 * removed or UA generated 7752 */ 7753 lun->per_res[residx].registered = 0; 7754 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7755 if (lun->per_res[i].registered == 0) 7756 continue; 7757 7758 if (memcmp(param->serv_act_res_key, 7759 lun->per_res[i].res_key.key, 7760 sizeof(struct scsi_per_res_key)) == 0) { 7761 lun->per_res[i].registered = 0; 7762 memset(&lun->per_res[i].res_key, 7763 0, 7764 sizeof(struct scsi_per_res_key)); 7765 lun->pr_key_count--; 7766 7767 if (!persis_offset 7768 && i < CTL_MAX_INITIATORS) 7769 lun->pending_sense[i 7770 ].ua_pending |= 7771 CTL_UA_REG_PREEMPT; 7772 else if (persis_offset 7773 && i >= persis_offset) 7774 lun->pending_sense[ 7775 i-persis_offset].ua_pending |= 7776 CTL_UA_REG_PREEMPT; 7777 } else if (type != lun->res_type 7778 && (lun->res_type == SPR_TYPE_WR_EX_RO 7779 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7780 if (!persis_offset 7781 && i < CTL_MAX_INITIATORS) 7782 lun->pending_sense[i 7783 ].ua_pending |= 7784 CTL_UA_RES_RELEASE; 7785 else if (persis_offset 7786 && i >= persis_offset) 7787 lun->pending_sense[ 7788 i-persis_offset 7789 ].ua_pending |= 7790 CTL_UA_RES_RELEASE; 7791 } 7792 } 7793 lun->per_res[residx].registered = 1; 7794 lun->res_type = type; 7795 if (lun->res_type != SPR_TYPE_WR_EX_AR 7796 && lun->res_type != SPR_TYPE_EX_AC_AR) 7797 lun->pr_res_idx = residx; 7798 else 7799 lun->pr_res_idx = 7800 CTL_PR_ALL_REGISTRANTS; 7801 7802 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7803 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7804 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7805 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7806 persis_io.pr.pr_info.res_type = type; 7807 memcpy(persis_io.pr.pr_info.sa_res_key, 7808 param->serv_act_res_key, 7809 sizeof(param->serv_act_res_key)); 7810 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7811 &persis_io, sizeof(persis_io), 0)) > 7812 CTL_HA_STATUS_SUCCESS) { 7813 printf("CTL:Persis Out error returned " 7814 "from ctl_ha_msg_send %d\n", 7815 isc_retval); 7816 } 7817 } else { 7818 /* 7819 * sa_res_key is not the res holder just 7820 * remove registrants 7821 */ 7822 int found=0; 7823 mtx_lock(&softc->ctl_lock); 7824 7825 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7826 if (memcmp(param->serv_act_res_key, 7827 lun->per_res[i].res_key.key, 7828 sizeof(struct scsi_per_res_key)) != 0) 7829 continue; 7830 7831 found = 1; 7832 lun->per_res[i].registered = 0; 7833 memset(&lun->per_res[i].res_key, 0, 7834 sizeof(struct scsi_per_res_key)); 7835 lun->pr_key_count--; 7836 7837 if (!persis_offset 7838 && i < CTL_MAX_INITIATORS) 7839 lun->pending_sense[i].ua_pending |= 7840 CTL_UA_REG_PREEMPT; 7841 else if (persis_offset 7842 && i >= persis_offset) 7843 lun->pending_sense[ 7844 i-persis_offset].ua_pending |= 7845 CTL_UA_REG_PREEMPT; 7846 } 7847 7848 if (!found) { 7849 mtx_unlock(&softc->ctl_lock); 7850 free(ctsio->kern_data_ptr, M_CTL); 7851 ctl_set_reservation_conflict(ctsio); 7852 ctl_done((union ctl_io *)ctsio); 7853 return (1); 7854 } 7855 mtx_unlock(&softc->ctl_lock); 7856 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7857 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7858 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7859 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7860 persis_io.pr.pr_info.res_type = type; 7861 memcpy(persis_io.pr.pr_info.sa_res_key, 7862 param->serv_act_res_key, 7863 sizeof(param->serv_act_res_key)); 7864 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7865 &persis_io, sizeof(persis_io), 0)) > 7866 CTL_HA_STATUS_SUCCESS) { 7867 printf("CTL:Persis Out error returned " 7868 "from ctl_ha_msg_send %d\n", 7869 isc_retval); 7870 } 7871 } 7872 } 7873 7874 lun->PRGeneration++; 7875 7876 return (retval); 7877} 7878 7879static void 7880ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7881{ 7882 int i; 7883 7884 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7885 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7886 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7887 msg->pr.pr_info.sa_res_key, 7888 sizeof(struct scsi_per_res_key)) != 0) { 7889 uint64_t sa_res_key; 7890 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7891 7892 if (sa_res_key == 0) { 7893 /* temporarily unregister this nexus */ 7894 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7895 7896 /* 7897 * Unregister everybody else and build UA for 7898 * them 7899 */ 7900 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7901 if (lun->per_res[i].registered == 0) 7902 continue; 7903 7904 if (!persis_offset 7905 && i < CTL_MAX_INITIATORS) 7906 lun->pending_sense[i].ua_pending |= 7907 CTL_UA_REG_PREEMPT; 7908 else if (persis_offset && i >= persis_offset) 7909 lun->pending_sense[i - 7910 persis_offset].ua_pending |= 7911 CTL_UA_REG_PREEMPT; 7912 lun->per_res[i].registered = 0; 7913 memset(&lun->per_res[i].res_key, 0, 7914 sizeof(struct scsi_per_res_key)); 7915 } 7916 7917 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7918 lun->pr_key_count = 1; 7919 lun->res_type = msg->pr.pr_info.res_type; 7920 if (lun->res_type != SPR_TYPE_WR_EX_AR 7921 && lun->res_type != SPR_TYPE_EX_AC_AR) 7922 lun->pr_res_idx = msg->pr.pr_info.residx; 7923 } else { 7924 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7925 if (memcmp(msg->pr.pr_info.sa_res_key, 7926 lun->per_res[i].res_key.key, 7927 sizeof(struct scsi_per_res_key)) != 0) 7928 continue; 7929 7930 lun->per_res[i].registered = 0; 7931 memset(&lun->per_res[i].res_key, 0, 7932 sizeof(struct scsi_per_res_key)); 7933 lun->pr_key_count--; 7934 7935 if (!persis_offset 7936 && i < persis_offset) 7937 lun->pending_sense[i].ua_pending |= 7938 CTL_UA_REG_PREEMPT; 7939 else if (persis_offset 7940 && i >= persis_offset) 7941 lun->pending_sense[i - 7942 persis_offset].ua_pending |= 7943 CTL_UA_REG_PREEMPT; 7944 } 7945 } 7946 } else { 7947 /* 7948 * Temporarily unregister so it won't get removed 7949 * or UA generated 7950 */ 7951 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7952 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7953 if (lun->per_res[i].registered == 0) 7954 continue; 7955 7956 if (memcmp(msg->pr.pr_info.sa_res_key, 7957 lun->per_res[i].res_key.key, 7958 sizeof(struct scsi_per_res_key)) == 0) { 7959 lun->per_res[i].registered = 0; 7960 memset(&lun->per_res[i].res_key, 0, 7961 sizeof(struct scsi_per_res_key)); 7962 lun->pr_key_count--; 7963 if (!persis_offset 7964 && i < CTL_MAX_INITIATORS) 7965 lun->pending_sense[i].ua_pending |= 7966 CTL_UA_REG_PREEMPT; 7967 else if (persis_offset 7968 && i >= persis_offset) 7969 lun->pending_sense[i - 7970 persis_offset].ua_pending |= 7971 CTL_UA_REG_PREEMPT; 7972 } else if (msg->pr.pr_info.res_type != lun->res_type 7973 && (lun->res_type == SPR_TYPE_WR_EX_RO 7974 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7975 if (!persis_offset 7976 && i < persis_offset) 7977 lun->pending_sense[i 7978 ].ua_pending |= 7979 CTL_UA_RES_RELEASE; 7980 else if (persis_offset 7981 && i >= persis_offset) 7982 lun->pending_sense[i - 7983 persis_offset].ua_pending |= 7984 CTL_UA_RES_RELEASE; 7985 } 7986 } 7987 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7988 lun->res_type = msg->pr.pr_info.res_type; 7989 if (lun->res_type != SPR_TYPE_WR_EX_AR 7990 && lun->res_type != SPR_TYPE_EX_AC_AR) 7991 lun->pr_res_idx = msg->pr.pr_info.residx; 7992 else 7993 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7994 } 7995 lun->PRGeneration++; 7996 7997} 7998 7999 8000int 8001ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 8002{ 8003 int retval; 8004 int isc_retval; 8005 u_int32_t param_len; 8006 struct scsi_per_res_out *cdb; 8007 struct ctl_lun *lun; 8008 struct scsi_per_res_out_parms* param; 8009 struct ctl_softc *softc; 8010 uint32_t residx; 8011 uint64_t res_key, sa_res_key; 8012 uint8_t type; 8013 union ctl_ha_msg persis_io; 8014 int i; 8015 8016 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 8017 8018 retval = CTL_RETVAL_COMPLETE; 8019 8020 softc = control_softc; 8021 8022 cdb = (struct scsi_per_res_out *)ctsio->cdb; 8023 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8024 8025 /* 8026 * We only support whole-LUN scope. The scope & type are ignored for 8027 * register, register and ignore existing key and clear. 8028 * We sometimes ignore scope and type on preempts too!! 8029 * Verify reservation type here as well. 8030 */ 8031 type = cdb->scope_type & SPR_TYPE_MASK; 8032 if ((cdb->action == SPRO_RESERVE) 8033 || (cdb->action == SPRO_RELEASE)) { 8034 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 8035 ctl_set_invalid_field(/*ctsio*/ ctsio, 8036 /*sks_valid*/ 1, 8037 /*command*/ 1, 8038 /*field*/ 2, 8039 /*bit_valid*/ 1, 8040 /*bit*/ 4); 8041 ctl_done((union ctl_io *)ctsio); 8042 return (CTL_RETVAL_COMPLETE); 8043 } 8044 8045 if (type>8 || type==2 || type==4 || type==0) { 8046 ctl_set_invalid_field(/*ctsio*/ ctsio, 8047 /*sks_valid*/ 1, 8048 /*command*/ 1, 8049 /*field*/ 2, 8050 /*bit_valid*/ 1, 8051 /*bit*/ 0); 8052 ctl_done((union ctl_io *)ctsio); 8053 return (CTL_RETVAL_COMPLETE); 8054 } 8055 } 8056 8057 switch (cdb->action & SPRO_ACTION_MASK) { 8058 case SPRO_REGISTER: 8059 case SPRO_RESERVE: 8060 case SPRO_RELEASE: 8061 case SPRO_CLEAR: 8062 case SPRO_PREEMPT: 8063 case SPRO_REG_IGNO: 8064 break; 8065 case SPRO_REG_MOVE: 8066 case SPRO_PRE_ABO: 8067 default: 8068 ctl_set_invalid_field(/*ctsio*/ ctsio, 8069 /*sks_valid*/ 1, 8070 /*command*/ 1, 8071 /*field*/ 1, 8072 /*bit_valid*/ 1, 8073 /*bit*/ 0); 8074 ctl_done((union ctl_io *)ctsio); 8075 return (CTL_RETVAL_COMPLETE); 8076 break; /* NOTREACHED */ 8077 } 8078 8079 param_len = scsi_4btoul(cdb->length); 8080 8081 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 8082 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 8083 ctsio->kern_data_len = param_len; 8084 ctsio->kern_total_len = param_len; 8085 ctsio->kern_data_resid = 0; 8086 ctsio->kern_rel_offset = 0; 8087 ctsio->kern_sg_entries = 0; 8088 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 8089 ctsio->be_move_done = ctl_config_move_done; 8090 ctl_datamove((union ctl_io *)ctsio); 8091 8092 return (CTL_RETVAL_COMPLETE); 8093 } 8094 8095 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 8096 8097 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8098 res_key = scsi_8btou64(param->res_key.key); 8099 sa_res_key = scsi_8btou64(param->serv_act_res_key); 8100 8101 /* 8102 * Validate the reservation key here except for SPRO_REG_IGNO 8103 * This must be done for all other service actions 8104 */ 8105 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8106 mtx_lock(&softc->ctl_lock); 8107 if (lun->per_res[residx].registered) { 8108 if (memcmp(param->res_key.key, 8109 lun->per_res[residx].res_key.key, 8110 ctl_min(sizeof(param->res_key), 8111 sizeof(lun->per_res[residx].res_key))) != 0) { 8112 /* 8113 * The current key passed in doesn't match 8114 * the one the initiator previously 8115 * registered. 8116 */ 8117 mtx_unlock(&softc->ctl_lock); 8118 free(ctsio->kern_data_ptr, M_CTL); 8119 ctl_set_reservation_conflict(ctsio); 8120 ctl_done((union ctl_io *)ctsio); 8121 return (CTL_RETVAL_COMPLETE); 8122 } 8123 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8124 /* 8125 * We are not registered 8126 */ 8127 mtx_unlock(&softc->ctl_lock); 8128 free(ctsio->kern_data_ptr, M_CTL); 8129 ctl_set_reservation_conflict(ctsio); 8130 ctl_done((union ctl_io *)ctsio); 8131 return (CTL_RETVAL_COMPLETE); 8132 } else if (res_key != 0) { 8133 /* 8134 * We are not registered and trying to register but 8135 * the register key isn't zero. 8136 */ 8137 mtx_unlock(&softc->ctl_lock); 8138 free(ctsio->kern_data_ptr, M_CTL); 8139 ctl_set_reservation_conflict(ctsio); 8140 ctl_done((union ctl_io *)ctsio); 8141 return (CTL_RETVAL_COMPLETE); 8142 } 8143 mtx_unlock(&softc->ctl_lock); 8144 } 8145 8146 switch (cdb->action & SPRO_ACTION_MASK) { 8147 case SPRO_REGISTER: 8148 case SPRO_REG_IGNO: { 8149 8150#if 0 8151 printf("Registration received\n"); 8152#endif 8153 8154 /* 8155 * We don't support any of these options, as we report in 8156 * the read capabilities request (see 8157 * ctl_persistent_reserve_in(), above). 8158 */ 8159 if ((param->flags & SPR_SPEC_I_PT) 8160 || (param->flags & SPR_ALL_TG_PT) 8161 || (param->flags & SPR_APTPL)) { 8162 int bit_ptr; 8163 8164 if (param->flags & SPR_APTPL) 8165 bit_ptr = 0; 8166 else if (param->flags & SPR_ALL_TG_PT) 8167 bit_ptr = 2; 8168 else /* SPR_SPEC_I_PT */ 8169 bit_ptr = 3; 8170 8171 free(ctsio->kern_data_ptr, M_CTL); 8172 ctl_set_invalid_field(ctsio, 8173 /*sks_valid*/ 1, 8174 /*command*/ 0, 8175 /*field*/ 20, 8176 /*bit_valid*/ 1, 8177 /*bit*/ bit_ptr); 8178 ctl_done((union ctl_io *)ctsio); 8179 return (CTL_RETVAL_COMPLETE); 8180 } 8181 8182 mtx_lock(&softc->ctl_lock); 8183 8184 /* 8185 * The initiator wants to clear the 8186 * key/unregister. 8187 */ 8188 if (sa_res_key == 0) { 8189 if ((res_key == 0 8190 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8191 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8192 && !lun->per_res[residx].registered)) { 8193 mtx_unlock(&softc->ctl_lock); 8194 goto done; 8195 } 8196 8197 lun->per_res[residx].registered = 0; 8198 memset(&lun->per_res[residx].res_key, 8199 0, sizeof(lun->per_res[residx].res_key)); 8200 lun->pr_key_count--; 8201 8202 if (residx == lun->pr_res_idx) { 8203 lun->flags &= ~CTL_LUN_PR_RESERVED; 8204 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8205 8206 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8207 || lun->res_type == SPR_TYPE_EX_AC_RO) 8208 && lun->pr_key_count) { 8209 /* 8210 * If the reservation is a registrants 8211 * only type we need to generate a UA 8212 * for other registered inits. The 8213 * sense code should be RESERVATIONS 8214 * RELEASED 8215 */ 8216 8217 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8218 if (lun->per_res[ 8219 i+persis_offset].registered 8220 == 0) 8221 continue; 8222 lun->pending_sense[i 8223 ].ua_pending |= 8224 CTL_UA_RES_RELEASE; 8225 } 8226 } 8227 lun->res_type = 0; 8228 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8229 if (lun->pr_key_count==0) { 8230 lun->flags &= ~CTL_LUN_PR_RESERVED; 8231 lun->res_type = 0; 8232 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8233 } 8234 } 8235 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8236 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8237 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8238 persis_io.pr.pr_info.residx = residx; 8239 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8240 &persis_io, sizeof(persis_io), 0 )) > 8241 CTL_HA_STATUS_SUCCESS) { 8242 printf("CTL:Persis Out error returned from " 8243 "ctl_ha_msg_send %d\n", isc_retval); 8244 } 8245 mtx_unlock(&softc->ctl_lock); 8246 } else /* sa_res_key != 0 */ { 8247 8248 /* 8249 * If we aren't registered currently then increment 8250 * the key count and set the registered flag. 8251 */ 8252 if (!lun->per_res[residx].registered) { 8253 lun->pr_key_count++; 8254 lun->per_res[residx].registered = 1; 8255 } 8256 8257 memcpy(&lun->per_res[residx].res_key, 8258 param->serv_act_res_key, 8259 ctl_min(sizeof(param->serv_act_res_key), 8260 sizeof(lun->per_res[residx].res_key))); 8261 8262 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8263 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8264 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8265 persis_io.pr.pr_info.residx = residx; 8266 memcpy(persis_io.pr.pr_info.sa_res_key, 8267 param->serv_act_res_key, 8268 sizeof(param->serv_act_res_key)); 8269 mtx_unlock(&softc->ctl_lock); 8270 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8271 &persis_io, sizeof(persis_io), 0)) > 8272 CTL_HA_STATUS_SUCCESS) { 8273 printf("CTL:Persis Out error returned from " 8274 "ctl_ha_msg_send %d\n", isc_retval); 8275 } 8276 } 8277 lun->PRGeneration++; 8278 8279 break; 8280 } 8281 case SPRO_RESERVE: 8282#if 0 8283 printf("Reserve executed type %d\n", type); 8284#endif 8285 mtx_lock(&softc->ctl_lock); 8286 if (lun->flags & CTL_LUN_PR_RESERVED) { 8287 /* 8288 * if this isn't the reservation holder and it's 8289 * not a "all registrants" type or if the type is 8290 * different then we have a conflict 8291 */ 8292 if ((lun->pr_res_idx != residx 8293 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8294 || lun->res_type != type) { 8295 mtx_unlock(&softc->ctl_lock); 8296 free(ctsio->kern_data_ptr, M_CTL); 8297 ctl_set_reservation_conflict(ctsio); 8298 ctl_done((union ctl_io *)ctsio); 8299 return (CTL_RETVAL_COMPLETE); 8300 } 8301 mtx_unlock(&softc->ctl_lock); 8302 } else /* create a reservation */ { 8303 /* 8304 * If it's not an "all registrants" type record 8305 * reservation holder 8306 */ 8307 if (type != SPR_TYPE_WR_EX_AR 8308 && type != SPR_TYPE_EX_AC_AR) 8309 lun->pr_res_idx = residx; /* Res holder */ 8310 else 8311 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8312 8313 lun->flags |= CTL_LUN_PR_RESERVED; 8314 lun->res_type = type; 8315 8316 mtx_unlock(&softc->ctl_lock); 8317 8318 /* send msg to other side */ 8319 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8320 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8321 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8322 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8323 persis_io.pr.pr_info.res_type = type; 8324 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8325 &persis_io, sizeof(persis_io), 0)) > 8326 CTL_HA_STATUS_SUCCESS) { 8327 printf("CTL:Persis Out error returned from " 8328 "ctl_ha_msg_send %d\n", isc_retval); 8329 } 8330 } 8331 break; 8332 8333 case SPRO_RELEASE: 8334 mtx_lock(&softc->ctl_lock); 8335 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8336 /* No reservation exists return good status */ 8337 mtx_unlock(&softc->ctl_lock); 8338 goto done; 8339 } 8340 /* 8341 * Is this nexus a reservation holder? 8342 */ 8343 if (lun->pr_res_idx != residx 8344 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8345 /* 8346 * not a res holder return good status but 8347 * do nothing 8348 */ 8349 mtx_unlock(&softc->ctl_lock); 8350 goto done; 8351 } 8352 8353 if (lun->res_type != type) { 8354 mtx_unlock(&softc->ctl_lock); 8355 free(ctsio->kern_data_ptr, M_CTL); 8356 ctl_set_illegal_pr_release(ctsio); 8357 ctl_done((union ctl_io *)ctsio); 8358 return (CTL_RETVAL_COMPLETE); 8359 } 8360 8361 /* okay to release */ 8362 lun->flags &= ~CTL_LUN_PR_RESERVED; 8363 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8364 lun->res_type = 0; 8365 8366 /* 8367 * if this isn't an exclusive access 8368 * res generate UA for all other 8369 * registrants. 8370 */ 8371 if (type != SPR_TYPE_EX_AC 8372 && type != SPR_TYPE_WR_EX) { 8373 /* 8374 * temporarily unregister so we don't generate UA 8375 */ 8376 lun->per_res[residx].registered = 0; 8377 8378 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8379 if (lun->per_res[i+persis_offset].registered 8380 == 0) 8381 continue; 8382 lun->pending_sense[i].ua_pending |= 8383 CTL_UA_RES_RELEASE; 8384 } 8385 8386 lun->per_res[residx].registered = 1; 8387 } 8388 mtx_unlock(&softc->ctl_lock); 8389 /* Send msg to other side */ 8390 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8391 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8392 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8393 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8394 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8395 printf("CTL:Persis Out error returned from " 8396 "ctl_ha_msg_send %d\n", isc_retval); 8397 } 8398 break; 8399 8400 case SPRO_CLEAR: 8401 /* send msg to other side */ 8402 8403 mtx_lock(&softc->ctl_lock); 8404 lun->flags &= ~CTL_LUN_PR_RESERVED; 8405 lun->res_type = 0; 8406 lun->pr_key_count = 0; 8407 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8408 8409 8410 memset(&lun->per_res[residx].res_key, 8411 0, sizeof(lun->per_res[residx].res_key)); 8412 lun->per_res[residx].registered = 0; 8413 8414 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8415 if (lun->per_res[i].registered) { 8416 if (!persis_offset && i < CTL_MAX_INITIATORS) 8417 lun->pending_sense[i].ua_pending |= 8418 CTL_UA_RES_PREEMPT; 8419 else if (persis_offset && i >= persis_offset) 8420 lun->pending_sense[i-persis_offset 8421 ].ua_pending |= CTL_UA_RES_PREEMPT; 8422 8423 memset(&lun->per_res[i].res_key, 8424 0, sizeof(struct scsi_per_res_key)); 8425 lun->per_res[i].registered = 0; 8426 } 8427 lun->PRGeneration++; 8428 mtx_unlock(&softc->ctl_lock); 8429 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8430 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8431 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8432 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8433 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8434 printf("CTL:Persis Out error returned from " 8435 "ctl_ha_msg_send %d\n", isc_retval); 8436 } 8437 break; 8438 8439 case SPRO_PREEMPT: { 8440 int nretval; 8441 8442 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8443 residx, ctsio, cdb, param); 8444 if (nretval != 0) 8445 return (CTL_RETVAL_COMPLETE); 8446 break; 8447 } 8448 case SPRO_REG_MOVE: 8449 case SPRO_PRE_ABO: 8450 default: 8451 free(ctsio->kern_data_ptr, M_CTL); 8452 ctl_set_invalid_field(/*ctsio*/ ctsio, 8453 /*sks_valid*/ 1, 8454 /*command*/ 1, 8455 /*field*/ 1, 8456 /*bit_valid*/ 1, 8457 /*bit*/ 0); 8458 ctl_done((union ctl_io *)ctsio); 8459 return (CTL_RETVAL_COMPLETE); 8460 break; /* NOTREACHED */ 8461 } 8462 8463done: 8464 free(ctsio->kern_data_ptr, M_CTL); 8465 ctl_set_success(ctsio); 8466 ctl_done((union ctl_io *)ctsio); 8467 8468 return (retval); 8469} 8470 8471/* 8472 * This routine is for handling a message from the other SC pertaining to 8473 * persistent reserve out. All the error checking will have been done 8474 * so only perorming the action need be done here to keep the two 8475 * in sync. 8476 */ 8477static void 8478ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8479{ 8480 struct ctl_lun *lun; 8481 struct ctl_softc *softc; 8482 int i; 8483 uint32_t targ_lun; 8484 8485 softc = control_softc; 8486 8487 mtx_lock(&softc->ctl_lock); 8488 8489 targ_lun = msg->hdr.nexus.targ_lun; 8490 if (msg->hdr.nexus.lun_map_fn != NULL) 8491 targ_lun = msg->hdr.nexus.lun_map_fn(msg->hdr.nexus.lun_map_arg, targ_lun); 8492 lun = softc->ctl_luns[targ_lun]; 8493 switch(msg->pr.pr_info.action) { 8494 case CTL_PR_REG_KEY: 8495 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8496 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8497 lun->pr_key_count++; 8498 } 8499 lun->PRGeneration++; 8500 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8501 msg->pr.pr_info.sa_res_key, 8502 sizeof(struct scsi_per_res_key)); 8503 break; 8504 8505 case CTL_PR_UNREG_KEY: 8506 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8507 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8508 0, sizeof(struct scsi_per_res_key)); 8509 lun->pr_key_count--; 8510 8511 /* XXX Need to see if the reservation has been released */ 8512 /* if so do we need to generate UA? */ 8513 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8514 lun->flags &= ~CTL_LUN_PR_RESERVED; 8515 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8516 8517 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8518 || lun->res_type == SPR_TYPE_EX_AC_RO) 8519 && lun->pr_key_count) { 8520 /* 8521 * If the reservation is a registrants 8522 * only type we need to generate a UA 8523 * for other registered inits. The 8524 * sense code should be RESERVATIONS 8525 * RELEASED 8526 */ 8527 8528 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8529 if (lun->per_res[i+ 8530 persis_offset].registered == 0) 8531 continue; 8532 8533 lun->pending_sense[i 8534 ].ua_pending |= 8535 CTL_UA_RES_RELEASE; 8536 } 8537 } 8538 lun->res_type = 0; 8539 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8540 if (lun->pr_key_count==0) { 8541 lun->flags &= ~CTL_LUN_PR_RESERVED; 8542 lun->res_type = 0; 8543 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8544 } 8545 } 8546 lun->PRGeneration++; 8547 break; 8548 8549 case CTL_PR_RESERVE: 8550 lun->flags |= CTL_LUN_PR_RESERVED; 8551 lun->res_type = msg->pr.pr_info.res_type; 8552 lun->pr_res_idx = msg->pr.pr_info.residx; 8553 8554 break; 8555 8556 case CTL_PR_RELEASE: 8557 /* 8558 * if this isn't an exclusive access res generate UA for all 8559 * other registrants. 8560 */ 8561 if (lun->res_type != SPR_TYPE_EX_AC 8562 && lun->res_type != SPR_TYPE_WR_EX) { 8563 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8564 if (lun->per_res[i+persis_offset].registered) 8565 lun->pending_sense[i].ua_pending |= 8566 CTL_UA_RES_RELEASE; 8567 } 8568 8569 lun->flags &= ~CTL_LUN_PR_RESERVED; 8570 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8571 lun->res_type = 0; 8572 break; 8573 8574 case CTL_PR_PREEMPT: 8575 ctl_pro_preempt_other(lun, msg); 8576 break; 8577 case CTL_PR_CLEAR: 8578 lun->flags &= ~CTL_LUN_PR_RESERVED; 8579 lun->res_type = 0; 8580 lun->pr_key_count = 0; 8581 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8582 8583 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8584 if (lun->per_res[i].registered == 0) 8585 continue; 8586 if (!persis_offset 8587 && i < CTL_MAX_INITIATORS) 8588 lun->pending_sense[i].ua_pending |= 8589 CTL_UA_RES_PREEMPT; 8590 else if (persis_offset 8591 && i >= persis_offset) 8592 lun->pending_sense[i-persis_offset].ua_pending|= 8593 CTL_UA_RES_PREEMPT; 8594 memset(&lun->per_res[i].res_key, 0, 8595 sizeof(struct scsi_per_res_key)); 8596 lun->per_res[i].registered = 0; 8597 } 8598 lun->PRGeneration++; 8599 break; 8600 } 8601 8602 mtx_unlock(&softc->ctl_lock); 8603} 8604 8605int 8606ctl_read_write(struct ctl_scsiio *ctsio) 8607{ 8608 struct ctl_lun *lun; 8609 struct ctl_lba_len_flags *lbalen; 8610 uint64_t lba; 8611 uint32_t num_blocks; 8612 int reladdr, fua, dpo, ebp; 8613 int retval; 8614 int isread; 8615 8616 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8617 8618 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8619 8620 reladdr = 0; 8621 fua = 0; 8622 dpo = 0; 8623 ebp = 0; 8624 8625 retval = CTL_RETVAL_COMPLETE; 8626 8627 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8628 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8629 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8630 uint32_t residx; 8631 8632 /* 8633 * XXX KDM need a lock here. 8634 */ 8635 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8636 if ((lun->res_type == SPR_TYPE_EX_AC 8637 && residx != lun->pr_res_idx) 8638 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8639 || lun->res_type == SPR_TYPE_EX_AC_AR) 8640 && !lun->per_res[residx].registered)) { 8641 ctl_set_reservation_conflict(ctsio); 8642 ctl_done((union ctl_io *)ctsio); 8643 return (CTL_RETVAL_COMPLETE); 8644 } 8645 } 8646 8647 switch (ctsio->cdb[0]) { 8648 case READ_6: 8649 case WRITE_6: { 8650 struct scsi_rw_6 *cdb; 8651 8652 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8653 8654 lba = scsi_3btoul(cdb->addr); 8655 /* only 5 bits are valid in the most significant address byte */ 8656 lba &= 0x1fffff; 8657 num_blocks = cdb->length; 8658 /* 8659 * This is correct according to SBC-2. 8660 */ 8661 if (num_blocks == 0) 8662 num_blocks = 256; 8663 break; 8664 } 8665 case READ_10: 8666 case WRITE_10: { 8667 struct scsi_rw_10 *cdb; 8668 8669 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8670 8671 if (cdb->byte2 & SRW10_RELADDR) 8672 reladdr = 1; 8673 if (cdb->byte2 & SRW10_FUA) 8674 fua = 1; 8675 if (cdb->byte2 & SRW10_DPO) 8676 dpo = 1; 8677 8678 if ((cdb->opcode == WRITE_10) 8679 && (cdb->byte2 & SRW10_EBP)) 8680 ebp = 1; 8681 8682 lba = scsi_4btoul(cdb->addr); 8683 num_blocks = scsi_2btoul(cdb->length); 8684 break; 8685 } 8686 case WRITE_VERIFY_10: { 8687 struct scsi_write_verify_10 *cdb; 8688 8689 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8690 8691 /* 8692 * XXX KDM we should do actual write verify support at some 8693 * point. This is obviously fake, we're just translating 8694 * things to a write. So we don't even bother checking the 8695 * BYTCHK field, since we don't do any verification. If 8696 * the user asks for it, we'll just pretend we did it. 8697 */ 8698 if (cdb->byte2 & SWV_DPO) 8699 dpo = 1; 8700 8701 lba = scsi_4btoul(cdb->addr); 8702 num_blocks = scsi_2btoul(cdb->length); 8703 break; 8704 } 8705 case READ_12: 8706 case WRITE_12: { 8707 struct scsi_rw_12 *cdb; 8708 8709 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8710 8711 if (cdb->byte2 & SRW12_RELADDR) 8712 reladdr = 1; 8713 if (cdb->byte2 & SRW12_FUA) 8714 fua = 1; 8715 if (cdb->byte2 & SRW12_DPO) 8716 dpo = 1; 8717 lba = scsi_4btoul(cdb->addr); 8718 num_blocks = scsi_4btoul(cdb->length); 8719 break; 8720 } 8721 case WRITE_VERIFY_12: { 8722 struct scsi_write_verify_12 *cdb; 8723 8724 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8725 8726 if (cdb->byte2 & SWV_DPO) 8727 dpo = 1; 8728 8729 lba = scsi_4btoul(cdb->addr); 8730 num_blocks = scsi_4btoul(cdb->length); 8731 8732 break; 8733 } 8734 case READ_16: 8735 case WRITE_16: { 8736 struct scsi_rw_16 *cdb; 8737 8738 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8739 8740 if (cdb->byte2 & SRW12_RELADDR) 8741 reladdr = 1; 8742 if (cdb->byte2 & SRW12_FUA) 8743 fua = 1; 8744 if (cdb->byte2 & SRW12_DPO) 8745 dpo = 1; 8746 8747 lba = scsi_8btou64(cdb->addr); 8748 num_blocks = scsi_4btoul(cdb->length); 8749 break; 8750 } 8751 case WRITE_VERIFY_16: { 8752 struct scsi_write_verify_16 *cdb; 8753 8754 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8755 8756 if (cdb->byte2 & SWV_DPO) 8757 dpo = 1; 8758 8759 lba = scsi_8btou64(cdb->addr); 8760 num_blocks = scsi_4btoul(cdb->length); 8761 break; 8762 } 8763 default: 8764 /* 8765 * We got a command we don't support. This shouldn't 8766 * happen, commands should be filtered out above us. 8767 */ 8768 ctl_set_invalid_opcode(ctsio); 8769 ctl_done((union ctl_io *)ctsio); 8770 8771 return (CTL_RETVAL_COMPLETE); 8772 break; /* NOTREACHED */ 8773 } 8774 8775 /* 8776 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8777 * interesting for us, but if RAIDCore is in write-back mode, 8778 * getting it to do write-through for a particular transaction may 8779 * not be possible. 8780 */ 8781 /* 8782 * We don't support relative addressing. That also requires 8783 * supporting linked commands, which we don't do. 8784 */ 8785 if (reladdr != 0) { 8786 ctl_set_invalid_field(ctsio, 8787 /*sks_valid*/ 1, 8788 /*command*/ 1, 8789 /*field*/ 1, 8790 /*bit_valid*/ 1, 8791 /*bit*/ 0); 8792 ctl_done((union ctl_io *)ctsio); 8793 return (CTL_RETVAL_COMPLETE); 8794 } 8795 8796 /* 8797 * The first check is to make sure we're in bounds, the second 8798 * check is to catch wrap-around problems. If the lba + num blocks 8799 * is less than the lba, then we've wrapped around and the block 8800 * range is invalid anyway. 8801 */ 8802 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8803 || ((lba + num_blocks) < lba)) { 8804 ctl_set_lba_out_of_range(ctsio); 8805 ctl_done((union ctl_io *)ctsio); 8806 return (CTL_RETVAL_COMPLETE); 8807 } 8808 8809 /* 8810 * According to SBC-3, a transfer length of 0 is not an error. 8811 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8812 * translates to 256 blocks for those commands. 8813 */ 8814 if (num_blocks == 0) { 8815 ctl_set_success(ctsio); 8816 ctl_done((union ctl_io *)ctsio); 8817 return (CTL_RETVAL_COMPLETE); 8818 } 8819 8820 lbalen = (struct ctl_lba_len_flags *) 8821 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8822 lbalen->lba = lba; 8823 lbalen->len = num_blocks; 8824 lbalen->flags = isread ? CTL_LLF_READ : CTL_LLF_WRITE; 8825 8826 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 8827 ctsio->kern_rel_offset = 0; 8828 8829 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8830 8831 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8832 8833 return (retval); 8834} 8835 8836static int 8837ctl_cnw_cont(union ctl_io *io) 8838{ 8839 struct ctl_scsiio *ctsio; 8840 struct ctl_lun *lun; 8841 struct ctl_lba_len_flags *lbalen; 8842 int retval; 8843 8844 ctsio = &io->scsiio; 8845 ctsio->io_hdr.status = CTL_STATUS_NONE; 8846 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_CONT; 8847 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8848 lbalen = (struct ctl_lba_len_flags *) 8849 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8850 lbalen->flags = CTL_LLF_WRITE; 8851 8852 CTL_DEBUG_PRINT(("ctl_cnw_cont: calling data_submit()\n")); 8853 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8854 return (retval); 8855} 8856 8857int 8858ctl_cnw(struct ctl_scsiio *ctsio) 8859{ 8860 struct ctl_lun *lun; 8861 struct ctl_lba_len_flags *lbalen; 8862 uint64_t lba; 8863 uint32_t num_blocks; 8864 int fua, dpo; 8865 int retval; 8866 8867 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8868 8869 CTL_DEBUG_PRINT(("ctl_cnw: command: %#x\n", ctsio->cdb[0])); 8870 8871 fua = 0; 8872 dpo = 0; 8873 8874 retval = CTL_RETVAL_COMPLETE; 8875 8876 switch (ctsio->cdb[0]) { 8877 case COMPARE_AND_WRITE: { 8878 struct scsi_compare_and_write *cdb; 8879 8880 cdb = (struct scsi_compare_and_write *)ctsio->cdb; 8881 8882 if (cdb->byte2 & SRW10_FUA) 8883 fua = 1; 8884 if (cdb->byte2 & SRW10_DPO) 8885 dpo = 1; 8886 lba = scsi_8btou64(cdb->addr); 8887 num_blocks = cdb->length; 8888 break; 8889 } 8890 default: 8891 /* 8892 * We got a command we don't support. This shouldn't 8893 * happen, commands should be filtered out above us. 8894 */ 8895 ctl_set_invalid_opcode(ctsio); 8896 ctl_done((union ctl_io *)ctsio); 8897 8898 return (CTL_RETVAL_COMPLETE); 8899 break; /* NOTREACHED */ 8900 } 8901 8902 /* 8903 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8904 * interesting for us, but if RAIDCore is in write-back mode, 8905 * getting it to do write-through for a particular transaction may 8906 * not be possible. 8907 */ 8908 8909 /* 8910 * The first check is to make sure we're in bounds, the second 8911 * check is to catch wrap-around problems. If the lba + num blocks 8912 * is less than the lba, then we've wrapped around and the block 8913 * range is invalid anyway. 8914 */ 8915 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8916 || ((lba + num_blocks) < lba)) { 8917 ctl_set_lba_out_of_range(ctsio); 8918 ctl_done((union ctl_io *)ctsio); 8919 return (CTL_RETVAL_COMPLETE); 8920 } 8921 8922 /* 8923 * According to SBC-3, a transfer length of 0 is not an error. 8924 */ 8925 if (num_blocks == 0) { 8926 ctl_set_success(ctsio); 8927 ctl_done((union ctl_io *)ctsio); 8928 return (CTL_RETVAL_COMPLETE); 8929 } 8930 8931 ctsio->kern_total_len = 2 * num_blocks * lun->be_lun->blocksize; 8932 ctsio->kern_rel_offset = 0; 8933 8934 /* 8935 * Set the IO_CONT flag, so that if this I/O gets passed to 8936 * ctl_data_submit_done(), it'll get passed back to 8937 * ctl_ctl_cnw_cont() for further processing. 8938 */ 8939 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 8940 ctsio->io_cont = ctl_cnw_cont; 8941 8942 lbalen = (struct ctl_lba_len_flags *) 8943 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8944 lbalen->lba = lba; 8945 lbalen->len = num_blocks; 8946 lbalen->flags = CTL_LLF_COMPARE; 8947 8948 CTL_DEBUG_PRINT(("ctl_cnw: calling data_submit()\n")); 8949 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8950 return (retval); 8951} 8952 8953int 8954ctl_verify(struct ctl_scsiio *ctsio) 8955{ 8956 struct ctl_lun *lun; 8957 struct ctl_lba_len_flags *lbalen; 8958 uint64_t lba; 8959 uint32_t num_blocks; 8960 int bytchk, dpo; 8961 int retval; 8962 8963 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8964 8965 CTL_DEBUG_PRINT(("ctl_verify: command: %#x\n", ctsio->cdb[0])); 8966 8967 bytchk = 0; 8968 dpo = 0; 8969 retval = CTL_RETVAL_COMPLETE; 8970 8971 switch (ctsio->cdb[0]) { 8972 case VERIFY_10: { 8973 struct scsi_verify_10 *cdb; 8974 8975 cdb = (struct scsi_verify_10 *)ctsio->cdb; 8976 if (cdb->byte2 & SVFY_BYTCHK) 8977 bytchk = 1; 8978 if (cdb->byte2 & SVFY_DPO) 8979 dpo = 1; 8980 lba = scsi_4btoul(cdb->addr); 8981 num_blocks = scsi_2btoul(cdb->length); 8982 break; 8983 } 8984 case VERIFY_12: { 8985 struct scsi_verify_12 *cdb; 8986 8987 cdb = (struct scsi_verify_12 *)ctsio->cdb; 8988 if (cdb->byte2 & SVFY_BYTCHK) 8989 bytchk = 1; 8990 if (cdb->byte2 & SVFY_DPO) 8991 dpo = 1; 8992 lba = scsi_4btoul(cdb->addr); 8993 num_blocks = scsi_4btoul(cdb->length); 8994 break; 8995 } 8996 case VERIFY_16: { 8997 struct scsi_rw_16 *cdb; 8998 8999 cdb = (struct scsi_rw_16 *)ctsio->cdb; 9000 if (cdb->byte2 & SVFY_BYTCHK) 9001 bytchk = 1; 9002 if (cdb->byte2 & SVFY_DPO) 9003 dpo = 1; 9004 lba = scsi_8btou64(cdb->addr); 9005 num_blocks = scsi_4btoul(cdb->length); 9006 break; 9007 } 9008 default: 9009 /* 9010 * We got a command we don't support. This shouldn't 9011 * happen, commands should be filtered out above us. 9012 */ 9013 ctl_set_invalid_opcode(ctsio); 9014 ctl_done((union ctl_io *)ctsio); 9015 return (CTL_RETVAL_COMPLETE); 9016 } 9017 9018 /* 9019 * The first check is to make sure we're in bounds, the second 9020 * check is to catch wrap-around problems. If the lba + num blocks 9021 * is less than the lba, then we've wrapped around and the block 9022 * range is invalid anyway. 9023 */ 9024 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9025 || ((lba + num_blocks) < lba)) { 9026 ctl_set_lba_out_of_range(ctsio); 9027 ctl_done((union ctl_io *)ctsio); 9028 return (CTL_RETVAL_COMPLETE); 9029 } 9030 9031 /* 9032 * According to SBC-3, a transfer length of 0 is not an error. 9033 */ 9034 if (num_blocks == 0) { 9035 ctl_set_success(ctsio); 9036 ctl_done((union ctl_io *)ctsio); 9037 return (CTL_RETVAL_COMPLETE); 9038 } 9039 9040 lbalen = (struct ctl_lba_len_flags *) 9041 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9042 lbalen->lba = lba; 9043 lbalen->len = num_blocks; 9044 if (bytchk) { 9045 lbalen->flags = CTL_LLF_COMPARE; 9046 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 9047 } else { 9048 lbalen->flags = CTL_LLF_VERIFY; 9049 ctsio->kern_total_len = 0; 9050 } 9051 ctsio->kern_rel_offset = 0; 9052 9053 CTL_DEBUG_PRINT(("ctl_verify: calling data_submit()\n")); 9054 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9055 return (retval); 9056} 9057 9058int 9059ctl_report_luns(struct ctl_scsiio *ctsio) 9060{ 9061 struct scsi_report_luns *cdb; 9062 struct scsi_report_luns_data *lun_data; 9063 struct ctl_lun *lun, *request_lun; 9064 int num_luns, retval; 9065 uint32_t alloc_len, lun_datalen; 9066 int num_filled, well_known; 9067 uint32_t initidx, targ_lun_id, lun_id; 9068 9069 retval = CTL_RETVAL_COMPLETE; 9070 well_known = 0; 9071 9072 cdb = (struct scsi_report_luns *)ctsio->cdb; 9073 9074 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 9075 9076 mtx_lock(&control_softc->ctl_lock); 9077 num_luns = control_softc->num_luns; 9078 mtx_unlock(&control_softc->ctl_lock); 9079 9080 switch (cdb->select_report) { 9081 case RPL_REPORT_DEFAULT: 9082 case RPL_REPORT_ALL: 9083 break; 9084 case RPL_REPORT_WELLKNOWN: 9085 well_known = 1; 9086 num_luns = 0; 9087 break; 9088 default: 9089 ctl_set_invalid_field(ctsio, 9090 /*sks_valid*/ 1, 9091 /*command*/ 1, 9092 /*field*/ 2, 9093 /*bit_valid*/ 0, 9094 /*bit*/ 0); 9095 ctl_done((union ctl_io *)ctsio); 9096 return (retval); 9097 break; /* NOTREACHED */ 9098 } 9099 9100 alloc_len = scsi_4btoul(cdb->length); 9101 /* 9102 * The initiator has to allocate at least 16 bytes for this request, 9103 * so he can at least get the header and the first LUN. Otherwise 9104 * we reject the request (per SPC-3 rev 14, section 6.21). 9105 */ 9106 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 9107 sizeof(struct scsi_report_luns_lundata))) { 9108 ctl_set_invalid_field(ctsio, 9109 /*sks_valid*/ 1, 9110 /*command*/ 1, 9111 /*field*/ 6, 9112 /*bit_valid*/ 0, 9113 /*bit*/ 0); 9114 ctl_done((union ctl_io *)ctsio); 9115 return (retval); 9116 } 9117 9118 request_lun = (struct ctl_lun *) 9119 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9120 9121 lun_datalen = sizeof(*lun_data) + 9122 (num_luns * sizeof(struct scsi_report_luns_lundata)); 9123 9124 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 9125 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 9126 ctsio->kern_sg_entries = 0; 9127 9128 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9129 9130 mtx_lock(&control_softc->ctl_lock); 9131 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 9132 lun_id = targ_lun_id; 9133 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 9134 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 9135 if (lun_id >= CTL_MAX_LUNS) 9136 continue; 9137 lun = control_softc->ctl_luns[lun_id]; 9138 if (lun == NULL) 9139 continue; 9140 9141 if (targ_lun_id <= 0xff) { 9142 /* 9143 * Peripheral addressing method, bus number 0. 9144 */ 9145 lun_data->luns[num_filled].lundata[0] = 9146 RPL_LUNDATA_ATYP_PERIPH; 9147 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 9148 num_filled++; 9149 } else if (targ_lun_id <= 0x3fff) { 9150 /* 9151 * Flat addressing method. 9152 */ 9153 lun_data->luns[num_filled].lundata[0] = 9154 RPL_LUNDATA_ATYP_FLAT | 9155 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 9156#ifdef OLDCTLHEADERS 9157 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 9158 (targ_lun_id & SRLD_BUS_LUN_MASK); 9159#endif 9160 lun_data->luns[num_filled].lundata[1] = 9161#ifdef OLDCTLHEADERS 9162 targ_lun_id >> SRLD_BUS_LUN_BITS; 9163#endif 9164 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 9165 num_filled++; 9166 } else { 9167 printf("ctl_report_luns: bogus LUN number %jd, " 9168 "skipping\n", (intmax_t)targ_lun_id); 9169 } 9170 /* 9171 * According to SPC-3, rev 14 section 6.21: 9172 * 9173 * "The execution of a REPORT LUNS command to any valid and 9174 * installed logical unit shall clear the REPORTED LUNS DATA 9175 * HAS CHANGED unit attention condition for all logical 9176 * units of that target with respect to the requesting 9177 * initiator. A valid and installed logical unit is one 9178 * having a PERIPHERAL QUALIFIER of 000b in the standard 9179 * INQUIRY data (see 6.4.2)." 9180 * 9181 * If request_lun is NULL, the LUN this report luns command 9182 * was issued to is either disabled or doesn't exist. In that 9183 * case, we shouldn't clear any pending lun change unit 9184 * attention. 9185 */ 9186 if (request_lun != NULL) 9187 lun->pending_sense[initidx].ua_pending &= 9188 ~CTL_UA_LUN_CHANGE; 9189 } 9190 mtx_unlock(&control_softc->ctl_lock); 9191 9192 /* 9193 * It's quite possible that we've returned fewer LUNs than we allocated 9194 * space for. Trim it. 9195 */ 9196 lun_datalen = sizeof(*lun_data) + 9197 (num_filled * sizeof(struct scsi_report_luns_lundata)); 9198 9199 if (lun_datalen < alloc_len) { 9200 ctsio->residual = alloc_len - lun_datalen; 9201 ctsio->kern_data_len = lun_datalen; 9202 ctsio->kern_total_len = lun_datalen; 9203 } else { 9204 ctsio->residual = 0; 9205 ctsio->kern_data_len = alloc_len; 9206 ctsio->kern_total_len = alloc_len; 9207 } 9208 ctsio->kern_data_resid = 0; 9209 ctsio->kern_rel_offset = 0; 9210 ctsio->kern_sg_entries = 0; 9211 9212 /* 9213 * We set this to the actual data length, regardless of how much 9214 * space we actually have to return results. If the user looks at 9215 * this value, he'll know whether or not he allocated enough space 9216 * and reissue the command if necessary. We don't support well 9217 * known logical units, so if the user asks for that, return none. 9218 */ 9219 scsi_ulto4b(lun_datalen - 8, lun_data->length); 9220 9221 /* 9222 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 9223 * this request. 9224 */ 9225 ctsio->scsi_status = SCSI_STATUS_OK; 9226 9227 ctsio->be_move_done = ctl_config_move_done; 9228 ctl_datamove((union ctl_io *)ctsio); 9229 9230 return (retval); 9231} 9232 9233int 9234ctl_request_sense(struct ctl_scsiio *ctsio) 9235{ 9236 struct scsi_request_sense *cdb; 9237 struct scsi_sense_data *sense_ptr; 9238 struct ctl_lun *lun; 9239 uint32_t initidx; 9240 int have_error; 9241 scsi_sense_data_type sense_format; 9242 9243 cdb = (struct scsi_request_sense *)ctsio->cdb; 9244 9245 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9246 9247 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9248 9249 /* 9250 * Determine which sense format the user wants. 9251 */ 9252 if (cdb->byte2 & SRS_DESC) 9253 sense_format = SSD_TYPE_DESC; 9254 else 9255 sense_format = SSD_TYPE_FIXED; 9256 9257 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9258 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9259 ctsio->kern_sg_entries = 0; 9260 9261 /* 9262 * struct scsi_sense_data, which is currently set to 256 bytes, is 9263 * larger than the largest allowed value for the length field in the 9264 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9265 */ 9266 ctsio->residual = 0; 9267 ctsio->kern_data_len = cdb->length; 9268 ctsio->kern_total_len = cdb->length; 9269 9270 ctsio->kern_data_resid = 0; 9271 ctsio->kern_rel_offset = 0; 9272 ctsio->kern_sg_entries = 0; 9273 9274 /* 9275 * If we don't have a LUN, we don't have any pending sense. 9276 */ 9277 if (lun == NULL) 9278 goto no_sense; 9279 9280 have_error = 0; 9281 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9282 /* 9283 * Check for pending sense, and then for pending unit attentions. 9284 * Pending sense gets returned first, then pending unit attentions. 9285 */ 9286 mtx_lock(&lun->ctl_softc->ctl_lock); 9287 if (ctl_is_set(lun->have_ca, initidx)) { 9288 scsi_sense_data_type stored_format; 9289 9290 /* 9291 * Check to see which sense format was used for the stored 9292 * sense data. 9293 */ 9294 stored_format = scsi_sense_type( 9295 &lun->pending_sense[initidx].sense); 9296 9297 /* 9298 * If the user requested a different sense format than the 9299 * one we stored, then we need to convert it to the other 9300 * format. If we're going from descriptor to fixed format 9301 * sense data, we may lose things in translation, depending 9302 * on what options were used. 9303 * 9304 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9305 * for some reason we'll just copy it out as-is. 9306 */ 9307 if ((stored_format == SSD_TYPE_FIXED) 9308 && (sense_format == SSD_TYPE_DESC)) 9309 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9310 &lun->pending_sense[initidx].sense, 9311 (struct scsi_sense_data_desc *)sense_ptr); 9312 else if ((stored_format == SSD_TYPE_DESC) 9313 && (sense_format == SSD_TYPE_FIXED)) 9314 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9315 &lun->pending_sense[initidx].sense, 9316 (struct scsi_sense_data_fixed *)sense_ptr); 9317 else 9318 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9319 ctl_min(sizeof(*sense_ptr), 9320 sizeof(lun->pending_sense[initidx].sense))); 9321 9322 ctl_clear_mask(lun->have_ca, initidx); 9323 have_error = 1; 9324 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9325 ctl_ua_type ua_type; 9326 9327 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9328 sense_ptr, sense_format); 9329 if (ua_type != CTL_UA_NONE) { 9330 have_error = 1; 9331 /* We're reporting this UA, so clear it */ 9332 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9333 } 9334 } 9335 mtx_unlock(&lun->ctl_softc->ctl_lock); 9336 9337 /* 9338 * We already have a pending error, return it. 9339 */ 9340 if (have_error != 0) { 9341 /* 9342 * We report the SCSI status as OK, since the status of the 9343 * request sense command itself is OK. 9344 */ 9345 ctsio->scsi_status = SCSI_STATUS_OK; 9346 9347 /* 9348 * We report 0 for the sense length, because we aren't doing 9349 * autosense in this case. We're reporting sense as 9350 * parameter data. 9351 */ 9352 ctsio->sense_len = 0; 9353 9354 ctsio->be_move_done = ctl_config_move_done; 9355 ctl_datamove((union ctl_io *)ctsio); 9356 9357 return (CTL_RETVAL_COMPLETE); 9358 } 9359 9360no_sense: 9361 9362 /* 9363 * No sense information to report, so we report that everything is 9364 * okay. 9365 */ 9366 ctl_set_sense_data(sense_ptr, 9367 lun, 9368 sense_format, 9369 /*current_error*/ 1, 9370 /*sense_key*/ SSD_KEY_NO_SENSE, 9371 /*asc*/ 0x00, 9372 /*ascq*/ 0x00, 9373 SSD_ELEM_NONE); 9374 9375 ctsio->scsi_status = SCSI_STATUS_OK; 9376 9377 /* 9378 * We report 0 for the sense length, because we aren't doing 9379 * autosense in this case. We're reporting sense as parameter data. 9380 */ 9381 ctsio->sense_len = 0; 9382 ctsio->be_move_done = ctl_config_move_done; 9383 ctl_datamove((union ctl_io *)ctsio); 9384 9385 return (CTL_RETVAL_COMPLETE); 9386} 9387 9388int 9389ctl_tur(struct ctl_scsiio *ctsio) 9390{ 9391 struct ctl_lun *lun; 9392 9393 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9394 9395 CTL_DEBUG_PRINT(("ctl_tur\n")); 9396 9397 if (lun == NULL) 9398 return (-EINVAL); 9399 9400 ctsio->scsi_status = SCSI_STATUS_OK; 9401 ctsio->io_hdr.status = CTL_SUCCESS; 9402 9403 ctl_done((union ctl_io *)ctsio); 9404 9405 return (CTL_RETVAL_COMPLETE); 9406} 9407 9408#ifdef notyet 9409static int 9410ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9411{ 9412 9413} 9414#endif 9415 9416static int 9417ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9418{ 9419 struct scsi_vpd_supported_pages *pages; 9420 int sup_page_size; 9421 struct ctl_lun *lun; 9422 9423 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9424 9425 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9426 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9427 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9428 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9429 ctsio->kern_sg_entries = 0; 9430 9431 if (sup_page_size < alloc_len) { 9432 ctsio->residual = alloc_len - sup_page_size; 9433 ctsio->kern_data_len = sup_page_size; 9434 ctsio->kern_total_len = sup_page_size; 9435 } else { 9436 ctsio->residual = 0; 9437 ctsio->kern_data_len = alloc_len; 9438 ctsio->kern_total_len = alloc_len; 9439 } 9440 ctsio->kern_data_resid = 0; 9441 ctsio->kern_rel_offset = 0; 9442 ctsio->kern_sg_entries = 0; 9443 9444 /* 9445 * The control device is always connected. The disk device, on the 9446 * other hand, may not be online all the time. Need to change this 9447 * to figure out whether the disk device is actually online or not. 9448 */ 9449 if (lun != NULL) 9450 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9451 lun->be_lun->lun_type; 9452 else 9453 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9454 9455 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9456 /* Supported VPD pages */ 9457 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9458 /* Serial Number */ 9459 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9460 /* Device Identification */ 9461 pages->page_list[2] = SVPD_DEVICE_ID; 9462 /* Block limits */ 9463 pages->page_list[3] = SVPD_BLOCK_LIMITS; 9464 /* Logical Block Provisioning */ 9465 pages->page_list[4] = SVPD_LBP; 9466 9467 ctsio->scsi_status = SCSI_STATUS_OK; 9468 9469 ctsio->be_move_done = ctl_config_move_done; 9470 ctl_datamove((union ctl_io *)ctsio); 9471 9472 return (CTL_RETVAL_COMPLETE); 9473} 9474 9475static int 9476ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9477{ 9478 struct scsi_vpd_unit_serial_number *sn_ptr; 9479 struct ctl_lun *lun; 9480#ifndef CTL_USE_BACKEND_SN 9481 char tmpstr[32]; 9482#endif 9483 9484 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9485 9486 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9487 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9488 ctsio->kern_sg_entries = 0; 9489 9490 if (sizeof(*sn_ptr) < alloc_len) { 9491 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9492 ctsio->kern_data_len = sizeof(*sn_ptr); 9493 ctsio->kern_total_len = sizeof(*sn_ptr); 9494 } else { 9495 ctsio->residual = 0; 9496 ctsio->kern_data_len = alloc_len; 9497 ctsio->kern_total_len = alloc_len; 9498 } 9499 ctsio->kern_data_resid = 0; 9500 ctsio->kern_rel_offset = 0; 9501 ctsio->kern_sg_entries = 0; 9502 9503 /* 9504 * The control device is always connected. The disk device, on the 9505 * other hand, may not be online all the time. Need to change this 9506 * to figure out whether the disk device is actually online or not. 9507 */ 9508 if (lun != NULL) 9509 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9510 lun->be_lun->lun_type; 9511 else 9512 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9513 9514 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9515 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9516#ifdef CTL_USE_BACKEND_SN 9517 /* 9518 * If we don't have a LUN, we just leave the serial number as 9519 * all spaces. 9520 */ 9521 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9522 if (lun != NULL) { 9523 strncpy((char *)sn_ptr->serial_num, 9524 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9525 } 9526#else 9527 /* 9528 * Note that we're using a non-unique serial number here, 9529 */ 9530 snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000"); 9531 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9532 strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN, 9533 ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4))); 9534#endif 9535 ctsio->scsi_status = SCSI_STATUS_OK; 9536 9537 ctsio->be_move_done = ctl_config_move_done; 9538 ctl_datamove((union ctl_io *)ctsio); 9539 9540 return (CTL_RETVAL_COMPLETE); 9541} 9542 9543 9544static int 9545ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9546{ 9547 struct scsi_vpd_device_id *devid_ptr; 9548 struct scsi_vpd_id_descriptor *desc, *desc1; 9549 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9550 struct scsi_vpd_id_t10 *t10id; 9551 struct ctl_softc *ctl_softc; 9552 struct ctl_lun *lun; 9553 struct ctl_frontend *fe; 9554 char *val; 9555#ifndef CTL_USE_BACKEND_SN 9556 char tmpstr[32]; 9557#endif /* CTL_USE_BACKEND_SN */ 9558 int devid_len; 9559 9560 ctl_softc = control_softc; 9561 9562 mtx_lock(&ctl_softc->ctl_lock); 9563 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9564 mtx_unlock(&ctl_softc->ctl_lock); 9565 9566 if (fe->devid != NULL) 9567 return ((fe->devid)(ctsio, alloc_len)); 9568 9569 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9570 9571 devid_len = sizeof(struct scsi_vpd_device_id) + 9572 sizeof(struct scsi_vpd_id_descriptor) + 9573 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 9574 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9575 sizeof(struct scsi_vpd_id_descriptor) + 9576 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9577 sizeof(struct scsi_vpd_id_descriptor) + 9578 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9579 9580 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 9581 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9582 ctsio->kern_sg_entries = 0; 9583 9584 if (devid_len < alloc_len) { 9585 ctsio->residual = alloc_len - devid_len; 9586 ctsio->kern_data_len = devid_len; 9587 ctsio->kern_total_len = devid_len; 9588 } else { 9589 ctsio->residual = 0; 9590 ctsio->kern_data_len = alloc_len; 9591 ctsio->kern_total_len = alloc_len; 9592 } 9593 ctsio->kern_data_resid = 0; 9594 ctsio->kern_rel_offset = 0; 9595 ctsio->kern_sg_entries = 0; 9596 9597 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9598 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9599 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9600 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 9601 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9602 CTL_WWPN_LEN); 9603 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9604 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9605 9606 /* 9607 * The control device is always connected. The disk device, on the 9608 * other hand, may not be online all the time. 9609 */ 9610 if (lun != NULL) 9611 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9612 lun->be_lun->lun_type; 9613 else 9614 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9615 9616 devid_ptr->page_code = SVPD_DEVICE_ID; 9617 9618 scsi_ulto2b(devid_len - 4, devid_ptr->length); 9619 9620 mtx_lock(&ctl_softc->ctl_lock); 9621 9622 /* 9623 * For Fibre channel, 9624 */ 9625 if (fe->port_type == CTL_PORT_FC) 9626 { 9627 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9628 SVPD_ID_CODESET_ASCII; 9629 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9630 SVPD_ID_CODESET_BINARY; 9631 } 9632 else 9633 { 9634 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9635 SVPD_ID_CODESET_ASCII; 9636 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9637 SVPD_ID_CODESET_BINARY; 9638 } 9639 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9640 mtx_unlock(&ctl_softc->ctl_lock); 9641 9642 /* 9643 * We're using a LUN association here. i.e., this device ID is a 9644 * per-LUN identifier. 9645 */ 9646 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9647 desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 9648 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 9649 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9650 } else { 9651 memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 9652 strncpy(t10id->vendor, val, 9653 min(sizeof(t10id->vendor), strlen(val))); 9654 } 9655 9656 /* 9657 * desc1 is for the WWPN which is a port asscociation. 9658 */ 9659 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9660 desc1->length = CTL_WWPN_LEN; 9661 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9662 /* For testing just create the WWPN */ 9663#if 0 9664 ddb_GetWWNN((char *)desc1->identifier); 9665 9666 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9667 /* This is so Copancontrol will return something sane */ 9668 if (ctsio->io_hdr.nexus.targ_port!=0 && 9669 ctsio->io_hdr.nexus.targ_port!=8) 9670 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9671 else 9672 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9673#endif 9674 9675 be64enc(desc1->identifier, fe->wwpn); 9676 9677 /* 9678 * desc2 is for the Relative Target Port(type 4h) identifier 9679 */ 9680 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9681 | SVPD_ID_TYPE_RELTARG; 9682 desc2->length = 4; 9683//#if 0 9684 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9685 /* This is so Copancontrol will return something sane */ 9686 if (ctsio->io_hdr.nexus.targ_port!=0 && 9687 ctsio->io_hdr.nexus.targ_port!=8) 9688 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9689 else 9690 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9691//#endif 9692 9693 /* 9694 * desc3 is for the Target Port Group(type 5h) identifier 9695 */ 9696 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9697 | SVPD_ID_TYPE_TPORTGRP; 9698 desc3->length = 4; 9699 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9700 desc3->identifier[3] = 1; 9701 else 9702 desc3->identifier[3] = 2; 9703 9704#ifdef CTL_USE_BACKEND_SN 9705 /* 9706 * If we've actually got a backend, copy the device id from the 9707 * per-LUN data. Otherwise, set it to all spaces. 9708 */ 9709 if (lun != NULL) { 9710 /* 9711 * Copy the backend's LUN ID. 9712 */ 9713 strncpy((char *)t10id->vendor_spec_id, 9714 (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 9715 } else { 9716 /* 9717 * No backend, set this to spaces. 9718 */ 9719 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 9720 } 9721#else 9722 snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d", 9723 (lun != NULL) ? (int)lun->lun : 0); 9724 strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN, 9725 sizeof(tmpstr))); 9726#endif 9727 9728 ctsio->scsi_status = SCSI_STATUS_OK; 9729 9730 ctsio->be_move_done = ctl_config_move_done; 9731 ctl_datamove((union ctl_io *)ctsio); 9732 9733 return (CTL_RETVAL_COMPLETE); 9734} 9735 9736static int 9737ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9738{ 9739 struct scsi_vpd_block_limits *bl_ptr; 9740 struct ctl_lun *lun; 9741 int bs; 9742 9743 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9744 bs = lun->be_lun->blocksize; 9745 9746 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9747 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9748 ctsio->kern_sg_entries = 0; 9749 9750 if (sizeof(*bl_ptr) < alloc_len) { 9751 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9752 ctsio->kern_data_len = sizeof(*bl_ptr); 9753 ctsio->kern_total_len = sizeof(*bl_ptr); 9754 } else { 9755 ctsio->residual = 0; 9756 ctsio->kern_data_len = alloc_len; 9757 ctsio->kern_total_len = alloc_len; 9758 } 9759 ctsio->kern_data_resid = 0; 9760 ctsio->kern_rel_offset = 0; 9761 ctsio->kern_sg_entries = 0; 9762 9763 /* 9764 * The control device is always connected. The disk device, on the 9765 * other hand, may not be online all the time. Need to change this 9766 * to figure out whether the disk device is actually online or not. 9767 */ 9768 if (lun != NULL) 9769 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9770 lun->be_lun->lun_type; 9771 else 9772 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9773 9774 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9775 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9776 bl_ptr->max_cmp_write_len = 0xff; 9777 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9778 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9779 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9780 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9781 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9782 } 9783 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9784 9785 ctsio->scsi_status = SCSI_STATUS_OK; 9786 ctsio->be_move_done = ctl_config_move_done; 9787 ctl_datamove((union ctl_io *)ctsio); 9788 9789 return (CTL_RETVAL_COMPLETE); 9790} 9791 9792static int 9793ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 9794{ 9795 struct scsi_vpd_logical_block_prov *lbp_ptr; 9796 struct ctl_lun *lun; 9797 int bs; 9798 9799 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9800 bs = lun->be_lun->blocksize; 9801 9802 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 9803 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 9804 ctsio->kern_sg_entries = 0; 9805 9806 if (sizeof(*lbp_ptr) < alloc_len) { 9807 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 9808 ctsio->kern_data_len = sizeof(*lbp_ptr); 9809 ctsio->kern_total_len = sizeof(*lbp_ptr); 9810 } else { 9811 ctsio->residual = 0; 9812 ctsio->kern_data_len = alloc_len; 9813 ctsio->kern_total_len = alloc_len; 9814 } 9815 ctsio->kern_data_resid = 0; 9816 ctsio->kern_rel_offset = 0; 9817 ctsio->kern_sg_entries = 0; 9818 9819 /* 9820 * The control device is always connected. The disk device, on the 9821 * other hand, may not be online all the time. Need to change this 9822 * to figure out whether the disk device is actually online or not. 9823 */ 9824 if (lun != NULL) 9825 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9826 lun->be_lun->lun_type; 9827 else 9828 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9829 9830 lbp_ptr->page_code = SVPD_LBP; 9831 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 9832 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 9833 9834 ctsio->scsi_status = SCSI_STATUS_OK; 9835 ctsio->be_move_done = ctl_config_move_done; 9836 ctl_datamove((union ctl_io *)ctsio); 9837 9838 return (CTL_RETVAL_COMPLETE); 9839} 9840 9841static int 9842ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9843{ 9844 struct scsi_inquiry *cdb; 9845 struct ctl_lun *lun; 9846 int alloc_len, retval; 9847 9848 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9849 cdb = (struct scsi_inquiry *)ctsio->cdb; 9850 9851 retval = CTL_RETVAL_COMPLETE; 9852 9853 alloc_len = scsi_2btoul(cdb->length); 9854 9855 switch (cdb->page_code) { 9856 case SVPD_SUPPORTED_PAGES: 9857 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9858 break; 9859 case SVPD_UNIT_SERIAL_NUMBER: 9860 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9861 break; 9862 case SVPD_DEVICE_ID: 9863 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9864 break; 9865 case SVPD_BLOCK_LIMITS: 9866 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 9867 break; 9868 case SVPD_LBP: 9869 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 9870 break; 9871 default: 9872 ctl_set_invalid_field(ctsio, 9873 /*sks_valid*/ 1, 9874 /*command*/ 1, 9875 /*field*/ 2, 9876 /*bit_valid*/ 0, 9877 /*bit*/ 0); 9878 ctl_done((union ctl_io *)ctsio); 9879 retval = CTL_RETVAL_COMPLETE; 9880 break; 9881 } 9882 9883 return (retval); 9884} 9885 9886static int 9887ctl_inquiry_std(struct ctl_scsiio *ctsio) 9888{ 9889 struct scsi_inquiry_data *inq_ptr; 9890 struct scsi_inquiry *cdb; 9891 struct ctl_softc *ctl_softc; 9892 struct ctl_lun *lun; 9893 char *val; 9894 uint32_t alloc_len; 9895 int is_fc; 9896 9897 ctl_softc = control_softc; 9898 9899 /* 9900 * Figure out whether we're talking to a Fibre Channel port or not. 9901 * We treat the ioctl front end, and any SCSI adapters, as packetized 9902 * SCSI front ends. 9903 */ 9904 mtx_lock(&ctl_softc->ctl_lock); 9905 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9906 CTL_PORT_FC) 9907 is_fc = 0; 9908 else 9909 is_fc = 1; 9910 mtx_unlock(&ctl_softc->ctl_lock); 9911 9912 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9913 cdb = (struct scsi_inquiry *)ctsio->cdb; 9914 alloc_len = scsi_2btoul(cdb->length); 9915 9916 /* 9917 * We malloc the full inquiry data size here and fill it 9918 * in. If the user only asks for less, we'll give him 9919 * that much. 9920 */ 9921 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9922 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9923 ctsio->kern_sg_entries = 0; 9924 ctsio->kern_data_resid = 0; 9925 ctsio->kern_rel_offset = 0; 9926 9927 if (sizeof(*inq_ptr) < alloc_len) { 9928 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9929 ctsio->kern_data_len = sizeof(*inq_ptr); 9930 ctsio->kern_total_len = sizeof(*inq_ptr); 9931 } else { 9932 ctsio->residual = 0; 9933 ctsio->kern_data_len = alloc_len; 9934 ctsio->kern_total_len = alloc_len; 9935 } 9936 9937 /* 9938 * If we have a LUN configured, report it as connected. Otherwise, 9939 * report that it is offline or no device is supported, depending 9940 * on the value of inquiry_pq_no_lun. 9941 * 9942 * According to the spec (SPC-4 r34), the peripheral qualifier 9943 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9944 * 9945 * "A peripheral device having the specified peripheral device type 9946 * is not connected to this logical unit. However, the device 9947 * server is capable of supporting the specified peripheral device 9948 * type on this logical unit." 9949 * 9950 * According to the same spec, the peripheral qualifier 9951 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9952 * 9953 * "The device server is not capable of supporting a peripheral 9954 * device on this logical unit. For this peripheral qualifier the 9955 * peripheral device type shall be set to 1Fh. All other peripheral 9956 * device type values are reserved for this peripheral qualifier." 9957 * 9958 * Given the text, it would seem that we probably want to report that 9959 * the LUN is offline here. There is no LUN connected, but we can 9960 * support a LUN at the given LUN number. 9961 * 9962 * In the real world, though, it sounds like things are a little 9963 * different: 9964 * 9965 * - Linux, when presented with a LUN with the offline peripheral 9966 * qualifier, will create an sg driver instance for it. So when 9967 * you attach it to CTL, you wind up with a ton of sg driver 9968 * instances. (One for every LUN that Linux bothered to probe.) 9969 * Linux does this despite the fact that it issues a REPORT LUNs 9970 * to LUN 0 to get the inventory of supported LUNs. 9971 * 9972 * - There is other anecdotal evidence (from Emulex folks) about 9973 * arrays that use the offline peripheral qualifier for LUNs that 9974 * are on the "passive" path in an active/passive array. 9975 * 9976 * So the solution is provide a hopefully reasonable default 9977 * (return bad/no LUN) and allow the user to change the behavior 9978 * with a tunable/sysctl variable. 9979 */ 9980 if (lun != NULL) 9981 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9982 lun->be_lun->lun_type; 9983 else if (ctl_softc->inquiry_pq_no_lun == 0) 9984 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9985 else 9986 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9987 9988 /* RMB in byte 2 is 0 */ 9989 inq_ptr->version = SCSI_REV_SPC3; 9990 9991 /* 9992 * According to SAM-3, even if a device only supports a single 9993 * level of LUN addressing, it should still set the HISUP bit: 9994 * 9995 * 4.9.1 Logical unit numbers overview 9996 * 9997 * All logical unit number formats described in this standard are 9998 * hierarchical in structure even when only a single level in that 9999 * hierarchy is used. The HISUP bit shall be set to one in the 10000 * standard INQUIRY data (see SPC-2) when any logical unit number 10001 * format described in this standard is used. Non-hierarchical 10002 * formats are outside the scope of this standard. 10003 * 10004 * Therefore we set the HiSup bit here. 10005 * 10006 * The reponse format is 2, per SPC-3. 10007 */ 10008 inq_ptr->response_format = SID_HiSup | 2; 10009 10010 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 10011 CTL_DEBUG_PRINT(("additional_length = %d\n", 10012 inq_ptr->additional_length)); 10013 10014 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 10015 /* 16 bit addressing */ 10016 if (is_fc == 0) 10017 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 10018 /* XXX set the SID_MultiP bit here if we're actually going to 10019 respond on multiple ports */ 10020 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 10021 10022 /* 16 bit data bus, synchronous transfers */ 10023 /* XXX these flags don't apply for FC */ 10024 if (is_fc == 0) 10025 inq_ptr->flags = SID_WBus16 | SID_Sync; 10026 /* 10027 * XXX KDM do we want to support tagged queueing on the control 10028 * device at all? 10029 */ 10030 if ((lun == NULL) 10031 || (lun->be_lun->lun_type != T_PROCESSOR)) 10032 inq_ptr->flags |= SID_CmdQue; 10033 /* 10034 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 10035 * We have 8 bytes for the vendor name, and 16 bytes for the device 10036 * name and 4 bytes for the revision. 10037 */ 10038 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 10039 strcpy(inq_ptr->vendor, CTL_VENDOR); 10040 } else { 10041 memset(inq_ptr->vendor, ' ', sizeof(inq_ptr->vendor)); 10042 strncpy(inq_ptr->vendor, val, 10043 min(sizeof(inq_ptr->vendor), strlen(val))); 10044 } 10045 if (lun == NULL) { 10046 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10047 } else if ((val = ctl_get_opt(lun->be_lun, "product")) == NULL) { 10048 switch (lun->be_lun->lun_type) { 10049 case T_DIRECT: 10050 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10051 break; 10052 case T_PROCESSOR: 10053 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 10054 break; 10055 default: 10056 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 10057 break; 10058 } 10059 } else { 10060 memset(inq_ptr->product, ' ', sizeof(inq_ptr->product)); 10061 strncpy(inq_ptr->product, val, 10062 min(sizeof(inq_ptr->product), strlen(val))); 10063 } 10064 10065 /* 10066 * XXX make this a macro somewhere so it automatically gets 10067 * incremented when we make changes. 10068 */ 10069 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "revision")) == NULL) { 10070 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 10071 } else { 10072 memset(inq_ptr->revision, ' ', sizeof(inq_ptr->revision)); 10073 strncpy(inq_ptr->revision, val, 10074 min(sizeof(inq_ptr->revision), strlen(val))); 10075 } 10076 10077 /* 10078 * For parallel SCSI, we support double transition and single 10079 * transition clocking. We also support QAS (Quick Arbitration 10080 * and Selection) and Information Unit transfers on both the 10081 * control and array devices. 10082 */ 10083 if (is_fc == 0) 10084 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 10085 SID_SPI_IUS; 10086 10087 /* SAM-3 */ 10088 scsi_ulto2b(0x0060, inq_ptr->version1); 10089 /* SPC-3 (no version claimed) XXX should we claim a version? */ 10090 scsi_ulto2b(0x0300, inq_ptr->version2); 10091 if (is_fc) { 10092 /* FCP-2 ANSI INCITS.350:2003 */ 10093 scsi_ulto2b(0x0917, inq_ptr->version3); 10094 } else { 10095 /* SPI-4 ANSI INCITS.362:200x */ 10096 scsi_ulto2b(0x0B56, inq_ptr->version3); 10097 } 10098 10099 if (lun == NULL) { 10100 /* SBC-2 (no version claimed) XXX should we claim a version? */ 10101 scsi_ulto2b(0x0320, inq_ptr->version4); 10102 } else { 10103 switch (lun->be_lun->lun_type) { 10104 case T_DIRECT: 10105 /* 10106 * SBC-2 (no version claimed) XXX should we claim a 10107 * version? 10108 */ 10109 scsi_ulto2b(0x0320, inq_ptr->version4); 10110 break; 10111 case T_PROCESSOR: 10112 default: 10113 break; 10114 } 10115 } 10116 10117 ctsio->scsi_status = SCSI_STATUS_OK; 10118 if (ctsio->kern_data_len > 0) { 10119 ctsio->be_move_done = ctl_config_move_done; 10120 ctl_datamove((union ctl_io *)ctsio); 10121 } else { 10122 ctsio->io_hdr.status = CTL_SUCCESS; 10123 ctl_done((union ctl_io *)ctsio); 10124 } 10125 10126 return (CTL_RETVAL_COMPLETE); 10127} 10128 10129int 10130ctl_inquiry(struct ctl_scsiio *ctsio) 10131{ 10132 struct scsi_inquiry *cdb; 10133 int retval; 10134 10135 cdb = (struct scsi_inquiry *)ctsio->cdb; 10136 10137 retval = 0; 10138 10139 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 10140 10141 /* 10142 * Right now, we don't support the CmdDt inquiry information. 10143 * This would be nice to support in the future. When we do 10144 * support it, we should change this test so that it checks to make 10145 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 10146 */ 10147#ifdef notyet 10148 if (((cdb->byte2 & SI_EVPD) 10149 && (cdb->byte2 & SI_CMDDT))) 10150#endif 10151 if (cdb->byte2 & SI_CMDDT) { 10152 /* 10153 * Point to the SI_CMDDT bit. We might change this 10154 * when we support SI_CMDDT, but since both bits would be 10155 * "wrong", this should probably just stay as-is then. 10156 */ 10157 ctl_set_invalid_field(ctsio, 10158 /*sks_valid*/ 1, 10159 /*command*/ 1, 10160 /*field*/ 1, 10161 /*bit_valid*/ 1, 10162 /*bit*/ 1); 10163 ctl_done((union ctl_io *)ctsio); 10164 return (CTL_RETVAL_COMPLETE); 10165 } 10166 if (cdb->byte2 & SI_EVPD) 10167 retval = ctl_inquiry_evpd(ctsio); 10168#ifdef notyet 10169 else if (cdb->byte2 & SI_CMDDT) 10170 retval = ctl_inquiry_cmddt(ctsio); 10171#endif 10172 else 10173 retval = ctl_inquiry_std(ctsio); 10174 10175 return (retval); 10176} 10177 10178/* 10179 * For known CDB types, parse the LBA and length. 10180 */ 10181static int 10182ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 10183{ 10184 if (io->io_hdr.io_type != CTL_IO_SCSI) 10185 return (1); 10186 10187 switch (io->scsiio.cdb[0]) { 10188 case COMPARE_AND_WRITE: { 10189 struct scsi_compare_and_write *cdb; 10190 10191 cdb = (struct scsi_compare_and_write *)io->scsiio.cdb; 10192 10193 *lba = scsi_8btou64(cdb->addr); 10194 *len = cdb->length; 10195 break; 10196 } 10197 case READ_6: 10198 case WRITE_6: { 10199 struct scsi_rw_6 *cdb; 10200 10201 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 10202 10203 *lba = scsi_3btoul(cdb->addr); 10204 /* only 5 bits are valid in the most significant address byte */ 10205 *lba &= 0x1fffff; 10206 *len = cdb->length; 10207 break; 10208 } 10209 case READ_10: 10210 case WRITE_10: { 10211 struct scsi_rw_10 *cdb; 10212 10213 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 10214 10215 *lba = scsi_4btoul(cdb->addr); 10216 *len = scsi_2btoul(cdb->length); 10217 break; 10218 } 10219 case WRITE_VERIFY_10: { 10220 struct scsi_write_verify_10 *cdb; 10221 10222 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 10223 10224 *lba = scsi_4btoul(cdb->addr); 10225 *len = scsi_2btoul(cdb->length); 10226 break; 10227 } 10228 case READ_12: 10229 case WRITE_12: { 10230 struct scsi_rw_12 *cdb; 10231 10232 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 10233 10234 *lba = scsi_4btoul(cdb->addr); 10235 *len = scsi_4btoul(cdb->length); 10236 break; 10237 } 10238 case WRITE_VERIFY_12: { 10239 struct scsi_write_verify_12 *cdb; 10240 10241 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 10242 10243 *lba = scsi_4btoul(cdb->addr); 10244 *len = scsi_4btoul(cdb->length); 10245 break; 10246 } 10247 case READ_16: 10248 case WRITE_16: { 10249 struct scsi_rw_16 *cdb; 10250 10251 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 10252 10253 *lba = scsi_8btou64(cdb->addr); 10254 *len = scsi_4btoul(cdb->length); 10255 break; 10256 } 10257 case WRITE_VERIFY_16: { 10258 struct scsi_write_verify_16 *cdb; 10259 10260 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 10261 10262 10263 *lba = scsi_8btou64(cdb->addr); 10264 *len = scsi_4btoul(cdb->length); 10265 break; 10266 } 10267 case WRITE_SAME_10: { 10268 struct scsi_write_same_10 *cdb; 10269 10270 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 10271 10272 *lba = scsi_4btoul(cdb->addr); 10273 *len = scsi_2btoul(cdb->length); 10274 break; 10275 } 10276 case WRITE_SAME_16: { 10277 struct scsi_write_same_16 *cdb; 10278 10279 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 10280 10281 *lba = scsi_8btou64(cdb->addr); 10282 *len = scsi_4btoul(cdb->length); 10283 break; 10284 } 10285 case VERIFY_10: { 10286 struct scsi_verify_10 *cdb; 10287 10288 cdb = (struct scsi_verify_10 *)io->scsiio.cdb; 10289 10290 *lba = scsi_4btoul(cdb->addr); 10291 *len = scsi_2btoul(cdb->length); 10292 break; 10293 } 10294 case VERIFY_12: { 10295 struct scsi_verify_12 *cdb; 10296 10297 cdb = (struct scsi_verify_12 *)io->scsiio.cdb; 10298 10299 *lba = scsi_4btoul(cdb->addr); 10300 *len = scsi_4btoul(cdb->length); 10301 break; 10302 } 10303 case VERIFY_16: { 10304 struct scsi_verify_16 *cdb; 10305 10306 cdb = (struct scsi_verify_16 *)io->scsiio.cdb; 10307 10308 *lba = scsi_8btou64(cdb->addr); 10309 *len = scsi_4btoul(cdb->length); 10310 break; 10311 } 10312 default: 10313 return (1); 10314 break; /* NOTREACHED */ 10315 } 10316 10317 return (0); 10318} 10319 10320static ctl_action 10321ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10322{ 10323 uint64_t endlba1, endlba2; 10324 10325 endlba1 = lba1 + len1 - 1; 10326 endlba2 = lba2 + len2 - 1; 10327 10328 if ((endlba1 < lba2) 10329 || (endlba2 < lba1)) 10330 return (CTL_ACTION_PASS); 10331 else 10332 return (CTL_ACTION_BLOCK); 10333} 10334 10335static ctl_action 10336ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10337{ 10338 uint64_t lba1, lba2; 10339 uint32_t len1, len2; 10340 int retval; 10341 10342 retval = ctl_get_lba_len(io1, &lba1, &len1); 10343 if (retval != 0) 10344 return (CTL_ACTION_ERROR); 10345 10346 retval = ctl_get_lba_len(io2, &lba2, &len2); 10347 if (retval != 0) 10348 return (CTL_ACTION_ERROR); 10349 10350 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10351} 10352 10353static ctl_action 10354ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10355{ 10356 struct ctl_cmd_entry *pending_entry, *ooa_entry; 10357 ctl_serialize_action *serialize_row; 10358 10359 /* 10360 * The initiator attempted multiple untagged commands at the same 10361 * time. Can't do that. 10362 */ 10363 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10364 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10365 && ((pending_io->io_hdr.nexus.targ_port == 10366 ooa_io->io_hdr.nexus.targ_port) 10367 && (pending_io->io_hdr.nexus.initid.id == 10368 ooa_io->io_hdr.nexus.initid.id)) 10369 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10370 return (CTL_ACTION_OVERLAP); 10371 10372 /* 10373 * The initiator attempted to send multiple tagged commands with 10374 * the same ID. (It's fine if different initiators have the same 10375 * tag ID.) 10376 * 10377 * Even if all of those conditions are true, we don't kill the I/O 10378 * if the command ahead of us has been aborted. We won't end up 10379 * sending it to the FETD, and it's perfectly legal to resend a 10380 * command with the same tag number as long as the previous 10381 * instance of this tag number has been aborted somehow. 10382 */ 10383 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10384 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10385 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10386 && ((pending_io->io_hdr.nexus.targ_port == 10387 ooa_io->io_hdr.nexus.targ_port) 10388 && (pending_io->io_hdr.nexus.initid.id == 10389 ooa_io->io_hdr.nexus.initid.id)) 10390 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10391 return (CTL_ACTION_OVERLAP_TAG); 10392 10393 /* 10394 * If we get a head of queue tag, SAM-3 says that we should 10395 * immediately execute it. 10396 * 10397 * What happens if this command would normally block for some other 10398 * reason? e.g. a request sense with a head of queue tag 10399 * immediately after a write. Normally that would block, but this 10400 * will result in its getting executed immediately... 10401 * 10402 * We currently return "pass" instead of "skip", so we'll end up 10403 * going through the rest of the queue to check for overlapped tags. 10404 * 10405 * XXX KDM check for other types of blockage first?? 10406 */ 10407 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10408 return (CTL_ACTION_PASS); 10409 10410 /* 10411 * Ordered tags have to block until all items ahead of them 10412 * have completed. If we get called with an ordered tag, we always 10413 * block, if something else is ahead of us in the queue. 10414 */ 10415 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10416 return (CTL_ACTION_BLOCK); 10417 10418 /* 10419 * Simple tags get blocked until all head of queue and ordered tags 10420 * ahead of them have completed. I'm lumping untagged commands in 10421 * with simple tags here. XXX KDM is that the right thing to do? 10422 */ 10423 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10424 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10425 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10426 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10427 return (CTL_ACTION_BLOCK); 10428 10429 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 10430 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 10431 10432 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10433 10434 switch (serialize_row[pending_entry->seridx]) { 10435 case CTL_SER_BLOCK: 10436 return (CTL_ACTION_BLOCK); 10437 break; /* NOTREACHED */ 10438 case CTL_SER_EXTENT: 10439 return (ctl_extent_check(pending_io, ooa_io)); 10440 break; /* NOTREACHED */ 10441 case CTL_SER_PASS: 10442 return (CTL_ACTION_PASS); 10443 break; /* NOTREACHED */ 10444 case CTL_SER_SKIP: 10445 return (CTL_ACTION_SKIP); 10446 break; 10447 default: 10448 panic("invalid serialization value %d", 10449 serialize_row[pending_entry->seridx]); 10450 break; /* NOTREACHED */ 10451 } 10452 10453 return (CTL_ACTION_ERROR); 10454} 10455 10456/* 10457 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10458 * Assumptions: 10459 * - pending_io is generally either incoming, or on the blocked queue 10460 * - starting I/O is the I/O we want to start the check with. 10461 */ 10462static ctl_action 10463ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10464 union ctl_io *starting_io) 10465{ 10466 union ctl_io *ooa_io; 10467 ctl_action action; 10468 10469 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 10470 10471 /* 10472 * Run back along the OOA queue, starting with the current 10473 * blocked I/O and going through every I/O before it on the 10474 * queue. If starting_io is NULL, we'll just end up returning 10475 * CTL_ACTION_PASS. 10476 */ 10477 for (ooa_io = starting_io; ooa_io != NULL; 10478 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10479 ooa_links)){ 10480 10481 /* 10482 * This routine just checks to see whether 10483 * cur_blocked is blocked by ooa_io, which is ahead 10484 * of it in the queue. It doesn't queue/dequeue 10485 * cur_blocked. 10486 */ 10487 action = ctl_check_for_blockage(pending_io, ooa_io); 10488 switch (action) { 10489 case CTL_ACTION_BLOCK: 10490 case CTL_ACTION_OVERLAP: 10491 case CTL_ACTION_OVERLAP_TAG: 10492 case CTL_ACTION_SKIP: 10493 case CTL_ACTION_ERROR: 10494 return (action); 10495 break; /* NOTREACHED */ 10496 case CTL_ACTION_PASS: 10497 break; 10498 default: 10499 panic("invalid action %d", action); 10500 break; /* NOTREACHED */ 10501 } 10502 } 10503 10504 return (CTL_ACTION_PASS); 10505} 10506 10507/* 10508 * Assumptions: 10509 * - An I/O has just completed, and has been removed from the per-LUN OOA 10510 * queue, so some items on the blocked queue may now be unblocked. 10511 */ 10512static int 10513ctl_check_blocked(struct ctl_lun *lun) 10514{ 10515 union ctl_io *cur_blocked, *next_blocked; 10516 10517 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 10518 10519 /* 10520 * Run forward from the head of the blocked queue, checking each 10521 * entry against the I/Os prior to it on the OOA queue to see if 10522 * there is still any blockage. 10523 * 10524 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10525 * with our removing a variable on it while it is traversing the 10526 * list. 10527 */ 10528 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10529 cur_blocked != NULL; cur_blocked = next_blocked) { 10530 union ctl_io *prev_ooa; 10531 ctl_action action; 10532 10533 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10534 blocked_links); 10535 10536 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10537 ctl_ooaq, ooa_links); 10538 10539 /* 10540 * If cur_blocked happens to be the first item in the OOA 10541 * queue now, prev_ooa will be NULL, and the action 10542 * returned will just be CTL_ACTION_PASS. 10543 */ 10544 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10545 10546 switch (action) { 10547 case CTL_ACTION_BLOCK: 10548 /* Nothing to do here, still blocked */ 10549 break; 10550 case CTL_ACTION_OVERLAP: 10551 case CTL_ACTION_OVERLAP_TAG: 10552 /* 10553 * This shouldn't happen! In theory we've already 10554 * checked this command for overlap... 10555 */ 10556 break; 10557 case CTL_ACTION_PASS: 10558 case CTL_ACTION_SKIP: { 10559 struct ctl_softc *softc; 10560 struct ctl_cmd_entry *entry; 10561 uint32_t initidx; 10562 uint8_t opcode; 10563 int isc_retval; 10564 10565 /* 10566 * The skip case shouldn't happen, this transaction 10567 * should have never made it onto the blocked queue. 10568 */ 10569 /* 10570 * This I/O is no longer blocked, we can remove it 10571 * from the blocked queue. Since this is a TAILQ 10572 * (doubly linked list), we can do O(1) removals 10573 * from any place on the list. 10574 */ 10575 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10576 blocked_links); 10577 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10578 10579 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10580 /* 10581 * Need to send IO back to original side to 10582 * run 10583 */ 10584 union ctl_ha_msg msg_info; 10585 10586 msg_info.hdr.original_sc = 10587 cur_blocked->io_hdr.original_sc; 10588 msg_info.hdr.serializing_sc = cur_blocked; 10589 msg_info.hdr.msg_type = CTL_MSG_R2R; 10590 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10591 &msg_info, sizeof(msg_info), 0)) > 10592 CTL_HA_STATUS_SUCCESS) { 10593 printf("CTL:Check Blocked error from " 10594 "ctl_ha_msg_send %d\n", 10595 isc_retval); 10596 } 10597 break; 10598 } 10599 opcode = cur_blocked->scsiio.cdb[0]; 10600 entry = &ctl_cmd_table[opcode]; 10601 softc = control_softc; 10602 10603 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10604 10605 /* 10606 * Check this I/O for LUN state changes that may 10607 * have happened while this command was blocked. 10608 * The LUN state may have been changed by a command 10609 * ahead of us in the queue, so we need to re-check 10610 * for any states that can be caused by SCSI 10611 * commands. 10612 */ 10613 if (ctl_scsiio_lun_check(softc, lun, entry, 10614 &cur_blocked->scsiio) == 0) { 10615 cur_blocked->io_hdr.flags |= 10616 CTL_FLAG_IS_WAS_ON_RTR; 10617 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 10618 &cur_blocked->io_hdr, links); 10619 /* 10620 * In the non CTL_DONE_THREAD case, we need 10621 * to wake up the work thread here. When 10622 * we're processing completed requests from 10623 * the work thread context, we'll pop back 10624 * around and end up pulling things off the 10625 * RtR queue. When we aren't processing 10626 * things from the work thread context, 10627 * though, we won't ever check the RtR queue. 10628 * So we need to wake up the thread to clear 10629 * things off the queue. Otherwise this 10630 * transaction will just sit on the RtR queue 10631 * until a new I/O comes in. (Which may or 10632 * may not happen...) 10633 */ 10634#ifndef CTL_DONE_THREAD 10635 ctl_wakeup_thread(); 10636#endif 10637 } else 10638 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 10639 break; 10640 } 10641 default: 10642 /* 10643 * This probably shouldn't happen -- we shouldn't 10644 * get CTL_ACTION_ERROR, or anything else. 10645 */ 10646 break; 10647 } 10648 } 10649 10650 return (CTL_RETVAL_COMPLETE); 10651} 10652 10653/* 10654 * This routine (with one exception) checks LUN flags that can be set by 10655 * commands ahead of us in the OOA queue. These flags have to be checked 10656 * when a command initially comes in, and when we pull a command off the 10657 * blocked queue and are preparing to execute it. The reason we have to 10658 * check these flags for commands on the blocked queue is that the LUN 10659 * state may have been changed by a command ahead of us while we're on the 10660 * blocked queue. 10661 * 10662 * Ordering is somewhat important with these checks, so please pay 10663 * careful attention to the placement of any new checks. 10664 */ 10665static int 10666ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10667 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10668{ 10669 int retval; 10670 10671 retval = 0; 10672 10673 /* 10674 * If this shelf is a secondary shelf controller, we have to reject 10675 * any media access commands. 10676 */ 10677#if 0 10678 /* No longer needed for HA */ 10679 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10680 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10681 ctl_set_lun_standby(ctsio); 10682 retval = 1; 10683 goto bailout; 10684 } 10685#endif 10686 10687 /* 10688 * Check for a reservation conflict. If this command isn't allowed 10689 * even on reserved LUNs, and if this initiator isn't the one who 10690 * reserved us, reject the command with a reservation conflict. 10691 */ 10692 if ((lun->flags & CTL_LUN_RESERVED) 10693 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10694 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10695 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10696 || (ctsio->io_hdr.nexus.targ_target.id != 10697 lun->rsv_nexus.targ_target.id)) { 10698 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10699 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10700 retval = 1; 10701 goto bailout; 10702 } 10703 } 10704 10705 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10706 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10707 uint32_t residx; 10708 10709 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10710 /* 10711 * if we aren't registered or it's a res holder type 10712 * reservation and this isn't the res holder then set a 10713 * conflict. 10714 * NOTE: Commands which might be allowed on write exclusive 10715 * type reservations are checked in the particular command 10716 * for a conflict. Read and SSU are the only ones. 10717 */ 10718 if (!lun->per_res[residx].registered 10719 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10720 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10721 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10722 retval = 1; 10723 goto bailout; 10724 } 10725 10726 } 10727 10728 if ((lun->flags & CTL_LUN_OFFLINE) 10729 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10730 ctl_set_lun_not_ready(ctsio); 10731 retval = 1; 10732 goto bailout; 10733 } 10734 10735 /* 10736 * If the LUN is stopped, see if this particular command is allowed 10737 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10738 */ 10739 if ((lun->flags & CTL_LUN_STOPPED) 10740 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10741 /* "Logical unit not ready, initializing cmd. required" */ 10742 ctl_set_lun_stopped(ctsio); 10743 retval = 1; 10744 goto bailout; 10745 } 10746 10747 if ((lun->flags & CTL_LUN_INOPERABLE) 10748 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10749 /* "Medium format corrupted" */ 10750 ctl_set_medium_format_corrupted(ctsio); 10751 retval = 1; 10752 goto bailout; 10753 } 10754 10755bailout: 10756 return (retval); 10757 10758} 10759 10760static void 10761ctl_failover_io(union ctl_io *io, int have_lock) 10762{ 10763 ctl_set_busy(&io->scsiio); 10764 ctl_done_lock(io, have_lock); 10765} 10766 10767static void 10768ctl_failover(void) 10769{ 10770 struct ctl_lun *lun; 10771 struct ctl_softc *ctl_softc; 10772 union ctl_io *next_io, *pending_io; 10773 union ctl_io *io; 10774 int lun_idx; 10775 int i; 10776 10777 ctl_softc = control_softc; 10778 10779 mtx_lock(&ctl_softc->ctl_lock); 10780 /* 10781 * Remove any cmds from the other SC from the rtr queue. These 10782 * will obviously only be for LUNs for which we're the primary. 10783 * We can't send status or get/send data for these commands. 10784 * Since they haven't been executed yet, we can just remove them. 10785 * We'll either abort them or delete them below, depending on 10786 * which HA mode we're in. 10787 */ 10788 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10789 io != NULL; io = next_io) { 10790 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10791 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10792 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10793 ctl_io_hdr, links); 10794 } 10795 10796 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10797 lun = ctl_softc->ctl_luns[lun_idx]; 10798 if (lun==NULL) 10799 continue; 10800 10801 /* 10802 * Processor LUNs are primary on both sides. 10803 * XXX will this always be true? 10804 */ 10805 if (lun->be_lun->lun_type == T_PROCESSOR) 10806 continue; 10807 10808 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10809 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10810 printf("FAILOVER: primary lun %d\n", lun_idx); 10811 /* 10812 * Remove all commands from the other SC. First from the 10813 * blocked queue then from the ooa queue. Once we have 10814 * removed them. Call ctl_check_blocked to see if there 10815 * is anything that can run. 10816 */ 10817 for (io = (union ctl_io *)TAILQ_FIRST( 10818 &lun->blocked_queue); io != NULL; io = next_io) { 10819 10820 next_io = (union ctl_io *)TAILQ_NEXT( 10821 &io->io_hdr, blocked_links); 10822 10823 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10824 TAILQ_REMOVE(&lun->blocked_queue, 10825 &io->io_hdr,blocked_links); 10826 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10827 TAILQ_REMOVE(&lun->ooa_queue, 10828 &io->io_hdr, ooa_links); 10829 10830 ctl_free_io(io); 10831 } 10832 } 10833 10834 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10835 io != NULL; io = next_io) { 10836 10837 next_io = (union ctl_io *)TAILQ_NEXT( 10838 &io->io_hdr, ooa_links); 10839 10840 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10841 10842 TAILQ_REMOVE(&lun->ooa_queue, 10843 &io->io_hdr, 10844 ooa_links); 10845 10846 ctl_free_io(io); 10847 } 10848 } 10849 ctl_check_blocked(lun); 10850 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10851 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10852 10853 printf("FAILOVER: primary lun %d\n", lun_idx); 10854 /* 10855 * Abort all commands from the other SC. We can't 10856 * send status back for them now. These should get 10857 * cleaned up when they are completed or come out 10858 * for a datamove operation. 10859 */ 10860 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10861 io != NULL; io = next_io) { 10862 next_io = (union ctl_io *)TAILQ_NEXT( 10863 &io->io_hdr, ooa_links); 10864 10865 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10866 io->io_hdr.flags |= CTL_FLAG_ABORT; 10867 } 10868 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10869 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10870 10871 printf("FAILOVER: secondary lun %d\n", lun_idx); 10872 10873 lun->flags |= CTL_LUN_PRIMARY_SC; 10874 10875 /* 10876 * We send all I/O that was sent to this controller 10877 * and redirected to the other side back with 10878 * busy status, and have the initiator retry it. 10879 * Figuring out how much data has been transferred, 10880 * etc. and picking up where we left off would be 10881 * very tricky. 10882 * 10883 * XXX KDM need to remove I/O from the blocked 10884 * queue as well! 10885 */ 10886 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10887 &lun->ooa_queue); pending_io != NULL; 10888 pending_io = next_io) { 10889 10890 next_io = (union ctl_io *)TAILQ_NEXT( 10891 &pending_io->io_hdr, ooa_links); 10892 10893 pending_io->io_hdr.flags &= 10894 ~CTL_FLAG_SENT_2OTHER_SC; 10895 10896 if (pending_io->io_hdr.flags & 10897 CTL_FLAG_IO_ACTIVE) { 10898 pending_io->io_hdr.flags |= 10899 CTL_FLAG_FAILOVER; 10900 } else { 10901 ctl_set_busy(&pending_io->scsiio); 10902 ctl_done_lock(pending_io, 10903 /*have_lock*/1); 10904 } 10905 } 10906 10907 /* 10908 * Build Unit Attention 10909 */ 10910 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10911 lun->pending_sense[i].ua_pending |= 10912 CTL_UA_ASYM_ACC_CHANGE; 10913 } 10914 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10915 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10916 printf("FAILOVER: secondary lun %d\n", lun_idx); 10917 /* 10918 * if the first io on the OOA is not on the RtR queue 10919 * add it. 10920 */ 10921 lun->flags |= CTL_LUN_PRIMARY_SC; 10922 10923 pending_io = (union ctl_io *)TAILQ_FIRST( 10924 &lun->ooa_queue); 10925 if (pending_io==NULL) { 10926 printf("Nothing on OOA queue\n"); 10927 continue; 10928 } 10929 10930 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10931 if ((pending_io->io_hdr.flags & 10932 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10933 pending_io->io_hdr.flags |= 10934 CTL_FLAG_IS_WAS_ON_RTR; 10935 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 10936 &pending_io->io_hdr, links); 10937 } 10938#if 0 10939 else 10940 { 10941 printf("Tag 0x%04x is running\n", 10942 pending_io->scsiio.tag_num); 10943 } 10944#endif 10945 10946 next_io = (union ctl_io *)TAILQ_NEXT( 10947 &pending_io->io_hdr, ooa_links); 10948 for (pending_io=next_io; pending_io != NULL; 10949 pending_io = next_io) { 10950 pending_io->io_hdr.flags &= 10951 ~CTL_FLAG_SENT_2OTHER_SC; 10952 next_io = (union ctl_io *)TAILQ_NEXT( 10953 &pending_io->io_hdr, ooa_links); 10954 if (pending_io->io_hdr.flags & 10955 CTL_FLAG_IS_WAS_ON_RTR) { 10956#if 0 10957 printf("Tag 0x%04x is running\n", 10958 pending_io->scsiio.tag_num); 10959#endif 10960 continue; 10961 } 10962 10963 switch (ctl_check_ooa(lun, pending_io, 10964 (union ctl_io *)TAILQ_PREV( 10965 &pending_io->io_hdr, ctl_ooaq, 10966 ooa_links))) { 10967 10968 case CTL_ACTION_BLOCK: 10969 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10970 &pending_io->io_hdr, 10971 blocked_links); 10972 pending_io->io_hdr.flags |= 10973 CTL_FLAG_BLOCKED; 10974 break; 10975 case CTL_ACTION_PASS: 10976 case CTL_ACTION_SKIP: 10977 pending_io->io_hdr.flags |= 10978 CTL_FLAG_IS_WAS_ON_RTR; 10979 STAILQ_INSERT_TAIL( 10980 &ctl_softc->rtr_queue, 10981 &pending_io->io_hdr, links); 10982 break; 10983 case CTL_ACTION_OVERLAP: 10984 ctl_set_overlapped_cmd( 10985 (struct ctl_scsiio *)pending_io); 10986 ctl_done_lock(pending_io, 10987 /*have_lock*/ 1); 10988 break; 10989 case CTL_ACTION_OVERLAP_TAG: 10990 ctl_set_overlapped_tag( 10991 (struct ctl_scsiio *)pending_io, 10992 pending_io->scsiio.tag_num & 0xff); 10993 ctl_done_lock(pending_io, 10994 /*have_lock*/ 1); 10995 break; 10996 case CTL_ACTION_ERROR: 10997 default: 10998 ctl_set_internal_failure( 10999 (struct ctl_scsiio *)pending_io, 11000 0, // sks_valid 11001 0); //retry count 11002 ctl_done_lock(pending_io, 11003 /*have_lock*/ 1); 11004 break; 11005 } 11006 } 11007 11008 /* 11009 * Build Unit Attention 11010 */ 11011 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11012 lun->pending_sense[i].ua_pending |= 11013 CTL_UA_ASYM_ACC_CHANGE; 11014 } 11015 } else { 11016 panic("Unhandled HA mode failover, LUN flags = %#x, " 11017 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 11018 } 11019 } 11020 ctl_pause_rtr = 0; 11021 mtx_unlock(&ctl_softc->ctl_lock); 11022} 11023 11024static int 11025ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 11026{ 11027 struct ctl_lun *lun; 11028 struct ctl_cmd_entry *entry; 11029 uint8_t opcode; 11030 uint32_t initidx, targ_lun; 11031 int retval; 11032 11033 retval = 0; 11034 11035 lun = NULL; 11036 11037 opcode = ctsio->cdb[0]; 11038 11039 mtx_lock(&ctl_softc->ctl_lock); 11040 11041 targ_lun = ctsio->io_hdr.nexus.targ_lun; 11042 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 11043 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 11044 if ((targ_lun < CTL_MAX_LUNS) 11045 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 11046 lun = ctl_softc->ctl_luns[targ_lun]; 11047 /* 11048 * If the LUN is invalid, pretend that it doesn't exist. 11049 * It will go away as soon as all pending I/O has been 11050 * completed. 11051 */ 11052 if (lun->flags & CTL_LUN_DISABLED) { 11053 lun = NULL; 11054 } else { 11055 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 11056 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 11057 lun->be_lun; 11058 if (lun->be_lun->lun_type == T_PROCESSOR) { 11059 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 11060 } 11061 } 11062 } else { 11063 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 11064 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 11065 } 11066 11067 entry = &ctl_cmd_table[opcode]; 11068 11069 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 11070 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 11071 11072 /* 11073 * Check to see whether we can send this command to LUNs that don't 11074 * exist. This should pretty much only be the case for inquiry 11075 * and request sense. Further checks, below, really require having 11076 * a LUN, so we can't really check the command anymore. Just put 11077 * it on the rtr queue. 11078 */ 11079 if (lun == NULL) { 11080 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11081 goto queue_rtr; 11082 11083 ctl_set_unsupported_lun(ctsio); 11084 mtx_unlock(&ctl_softc->ctl_lock); 11085 ctl_done((union ctl_io *)ctsio); 11086 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 11087 goto bailout; 11088 } else { 11089 /* 11090 * Every I/O goes into the OOA queue for a particular LUN, and 11091 * stays there until completion. 11092 */ 11093 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 11094 11095 /* 11096 * Make sure we support this particular command on this LUN. 11097 * e.g., we don't support writes to the control LUN. 11098 */ 11099 switch (lun->be_lun->lun_type) { 11100 case T_PROCESSOR: 11101 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 11102 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11103 == 0)) { 11104 ctl_set_invalid_opcode(ctsio); 11105 mtx_unlock(&ctl_softc->ctl_lock); 11106 ctl_done((union ctl_io *)ctsio); 11107 goto bailout; 11108 } 11109 break; 11110 case T_DIRECT: 11111 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 11112 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11113 == 0)){ 11114 ctl_set_invalid_opcode(ctsio); 11115 mtx_unlock(&ctl_softc->ctl_lock); 11116 ctl_done((union ctl_io *)ctsio); 11117 goto bailout; 11118 } 11119 break; 11120 default: 11121 printf("Unsupported CTL LUN type %d\n", 11122 lun->be_lun->lun_type); 11123 panic("Unsupported CTL LUN type %d\n", 11124 lun->be_lun->lun_type); 11125 break; /* NOTREACHED */ 11126 } 11127 } 11128 11129 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 11130 11131 /* 11132 * If we've got a request sense, it'll clear the contingent 11133 * allegiance condition. Otherwise, if we have a CA condition for 11134 * this initiator, clear it, because it sent down a command other 11135 * than request sense. 11136 */ 11137 if ((opcode != REQUEST_SENSE) 11138 && (ctl_is_set(lun->have_ca, initidx))) 11139 ctl_clear_mask(lun->have_ca, initidx); 11140 11141 /* 11142 * If the command has this flag set, it handles its own unit 11143 * attention reporting, we shouldn't do anything. Otherwise we 11144 * check for any pending unit attentions, and send them back to the 11145 * initiator. We only do this when a command initially comes in, 11146 * not when we pull it off the blocked queue. 11147 * 11148 * According to SAM-3, section 5.3.2, the order that things get 11149 * presented back to the host is basically unit attentions caused 11150 * by some sort of reset event, busy status, reservation conflicts 11151 * or task set full, and finally any other status. 11152 * 11153 * One issue here is that some of the unit attentions we report 11154 * don't fall into the "reset" category (e.g. "reported luns data 11155 * has changed"). So reporting it here, before the reservation 11156 * check, may be technically wrong. I guess the only thing to do 11157 * would be to check for and report the reset events here, and then 11158 * check for the other unit attention types after we check for a 11159 * reservation conflict. 11160 * 11161 * XXX KDM need to fix this 11162 */ 11163 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 11164 ctl_ua_type ua_type; 11165 11166 ua_type = lun->pending_sense[initidx].ua_pending; 11167 if (ua_type != CTL_UA_NONE) { 11168 scsi_sense_data_type sense_format; 11169 11170 if (lun != NULL) 11171 sense_format = (lun->flags & 11172 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 11173 SSD_TYPE_FIXED; 11174 else 11175 sense_format = SSD_TYPE_FIXED; 11176 11177 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 11178 sense_format); 11179 if (ua_type != CTL_UA_NONE) { 11180 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 11181 ctsio->io_hdr.status = CTL_SCSI_ERROR | 11182 CTL_AUTOSENSE; 11183 ctsio->sense_len = SSD_FULL_SIZE; 11184 lun->pending_sense[initidx].ua_pending &= 11185 ~ua_type; 11186 mtx_unlock(&ctl_softc->ctl_lock); 11187 ctl_done((union ctl_io *)ctsio); 11188 goto bailout; 11189 } 11190 } 11191 } 11192 11193 11194 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 11195 mtx_unlock(&ctl_softc->ctl_lock); 11196 ctl_done((union ctl_io *)ctsio); 11197 goto bailout; 11198 } 11199 11200 /* 11201 * XXX CHD this is where we want to send IO to other side if 11202 * this LUN is secondary on this SC. We will need to make a copy 11203 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 11204 * the copy we send as FROM_OTHER. 11205 * We also need to stuff the address of the original IO so we can 11206 * find it easily. Something similar will need be done on the other 11207 * side so when we are done we can find the copy. 11208 */ 11209 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 11210 union ctl_ha_msg msg_info; 11211 int isc_retval; 11212 11213 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11214 11215 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 11216 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 11217#if 0 11218 printf("1. ctsio %p\n", ctsio); 11219#endif 11220 msg_info.hdr.serializing_sc = NULL; 11221 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 11222 msg_info.scsi.tag_num = ctsio->tag_num; 11223 msg_info.scsi.tag_type = ctsio->tag_type; 11224 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 11225 11226 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11227 11228 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11229 (void *)&msg_info, sizeof(msg_info), 0)) > 11230 CTL_HA_STATUS_SUCCESS) { 11231 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 11232 isc_retval); 11233 printf("CTL:opcode is %x\n",opcode); 11234 } else { 11235#if 0 11236 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 11237#endif 11238 } 11239 11240 /* 11241 * XXX KDM this I/O is off the incoming queue, but hasn't 11242 * been inserted on any other queue. We may need to come 11243 * up with a holding queue while we wait for serialization 11244 * so that we have an idea of what we're waiting for from 11245 * the other side. 11246 */ 11247 goto bailout_unlock; 11248 } 11249 11250 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 11251 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 11252 ctl_ooaq, ooa_links))) { 11253 case CTL_ACTION_BLOCK: 11254 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 11255 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 11256 blocked_links); 11257 goto bailout_unlock; 11258 break; /* NOTREACHED */ 11259 case CTL_ACTION_PASS: 11260 case CTL_ACTION_SKIP: 11261 goto queue_rtr; 11262 break; /* NOTREACHED */ 11263 case CTL_ACTION_OVERLAP: 11264 ctl_set_overlapped_cmd(ctsio); 11265 mtx_unlock(&ctl_softc->ctl_lock); 11266 ctl_done((union ctl_io *)ctsio); 11267 goto bailout; 11268 break; /* NOTREACHED */ 11269 case CTL_ACTION_OVERLAP_TAG: 11270 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 11271 mtx_unlock(&ctl_softc->ctl_lock); 11272 ctl_done((union ctl_io *)ctsio); 11273 goto bailout; 11274 break; /* NOTREACHED */ 11275 case CTL_ACTION_ERROR: 11276 default: 11277 ctl_set_internal_failure(ctsio, 11278 /*sks_valid*/ 0, 11279 /*retry_count*/ 0); 11280 mtx_unlock(&ctl_softc->ctl_lock); 11281 ctl_done((union ctl_io *)ctsio); 11282 goto bailout; 11283 break; /* NOTREACHED */ 11284 } 11285 11286 goto bailout_unlock; 11287 11288queue_rtr: 11289 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11290 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 11291 11292bailout_unlock: 11293 mtx_unlock(&ctl_softc->ctl_lock); 11294 11295bailout: 11296 return (retval); 11297} 11298 11299static int 11300ctl_scsiio(struct ctl_scsiio *ctsio) 11301{ 11302 int retval; 11303 struct ctl_cmd_entry *entry; 11304 11305 retval = CTL_RETVAL_COMPLETE; 11306 11307 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 11308 11309 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11310 11311 /* 11312 * If this I/O has been aborted, just send it straight to 11313 * ctl_done() without executing it. 11314 */ 11315 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11316 ctl_done((union ctl_io *)ctsio); 11317 goto bailout; 11318 } 11319 11320 /* 11321 * All the checks should have been handled by ctl_scsiio_precheck(). 11322 * We should be clear now to just execute the I/O. 11323 */ 11324 retval = entry->execute(ctsio); 11325 11326bailout: 11327 return (retval); 11328} 11329 11330/* 11331 * Since we only implement one target right now, a bus reset simply resets 11332 * our single target. 11333 */ 11334static int 11335ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11336{ 11337 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11338} 11339 11340static int 11341ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11342 ctl_ua_type ua_type) 11343{ 11344 struct ctl_lun *lun; 11345 int retval; 11346 11347 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11348 union ctl_ha_msg msg_info; 11349 11350 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11351 msg_info.hdr.nexus = io->io_hdr.nexus; 11352 if (ua_type==CTL_UA_TARG_RESET) 11353 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11354 else 11355 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11356 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11357 msg_info.hdr.original_sc = NULL; 11358 msg_info.hdr.serializing_sc = NULL; 11359 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11360 (void *)&msg_info, sizeof(msg_info), 0)) { 11361 } 11362 } 11363 retval = 0; 11364 11365 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11366 retval += ctl_lun_reset(lun, io, ua_type); 11367 11368 return (retval); 11369} 11370 11371/* 11372 * The LUN should always be set. The I/O is optional, and is used to 11373 * distinguish between I/Os sent by this initiator, and by other 11374 * initiators. We set unit attention for initiators other than this one. 11375 * SAM-3 is vague on this point. It does say that a unit attention should 11376 * be established for other initiators when a LUN is reset (see section 11377 * 5.7.3), but it doesn't specifically say that the unit attention should 11378 * be established for this particular initiator when a LUN is reset. Here 11379 * is the relevant text, from SAM-3 rev 8: 11380 * 11381 * 5.7.2 When a SCSI initiator port aborts its own tasks 11382 * 11383 * When a SCSI initiator port causes its own task(s) to be aborted, no 11384 * notification that the task(s) have been aborted shall be returned to 11385 * the SCSI initiator port other than the completion response for the 11386 * command or task management function action that caused the task(s) to 11387 * be aborted and notification(s) associated with related effects of the 11388 * action (e.g., a reset unit attention condition). 11389 * 11390 * XXX KDM for now, we're setting unit attention for all initiators. 11391 */ 11392static int 11393ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11394{ 11395 union ctl_io *xio; 11396#if 0 11397 uint32_t initindex; 11398#endif 11399 int i; 11400 11401 /* 11402 * Run through the OOA queue and abort each I/O. 11403 */ 11404#if 0 11405 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11406#endif 11407 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11408 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11409 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11410 } 11411 11412 /* 11413 * This version sets unit attention for every 11414 */ 11415#if 0 11416 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11417 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11418 if (initindex == i) 11419 continue; 11420 lun->pending_sense[i].ua_pending |= ua_type; 11421 } 11422#endif 11423 11424 /* 11425 * A reset (any kind, really) clears reservations established with 11426 * RESERVE/RELEASE. It does not clear reservations established 11427 * with PERSISTENT RESERVE OUT, but we don't support that at the 11428 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11429 * reservations made with the RESERVE/RELEASE commands, because 11430 * those commands are obsolete in SPC-3. 11431 */ 11432 lun->flags &= ~CTL_LUN_RESERVED; 11433 11434 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11435 ctl_clear_mask(lun->have_ca, i); 11436 lun->pending_sense[i].ua_pending |= ua_type; 11437 } 11438 11439 return (0); 11440} 11441 11442static int 11443ctl_abort_task(union ctl_io *io) 11444{ 11445 union ctl_io *xio; 11446 struct ctl_lun *lun; 11447 struct ctl_softc *ctl_softc; 11448#if 0 11449 struct sbuf sb; 11450 char printbuf[128]; 11451#endif 11452 int found; 11453 uint32_t targ_lun; 11454 11455 ctl_softc = control_softc; 11456 found = 0; 11457 11458 /* 11459 * Look up the LUN. 11460 */ 11461 targ_lun = io->io_hdr.nexus.targ_lun; 11462 if (io->io_hdr.nexus.lun_map_fn != NULL) 11463 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11464 if ((targ_lun < CTL_MAX_LUNS) 11465 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11466 lun = ctl_softc->ctl_luns[targ_lun]; 11467 else 11468 goto bailout; 11469 11470#if 0 11471 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11472 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11473#endif 11474 11475 /* 11476 * Run through the OOA queue and attempt to find the given I/O. 11477 * The target port, initiator ID, tag type and tag number have to 11478 * match the values that we got from the initiator. If we have an 11479 * untagged command to abort, simply abort the first untagged command 11480 * we come to. We only allow one untagged command at a time of course. 11481 */ 11482#if 0 11483 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11484#endif 11485 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11486 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11487#if 0 11488 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11489 11490 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11491 lun->lun, xio->scsiio.tag_num, 11492 xio->scsiio.tag_type, 11493 (xio->io_hdr.blocked_links.tqe_prev 11494 == NULL) ? "" : " BLOCKED", 11495 (xio->io_hdr.flags & 11496 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11497 (xio->io_hdr.flags & 11498 CTL_FLAG_ABORT) ? " ABORT" : "", 11499 (xio->io_hdr.flags & 11500 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11501 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11502 sbuf_finish(&sb); 11503 printf("%s\n", sbuf_data(&sb)); 11504#endif 11505 11506 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11507 && (xio->io_hdr.nexus.initid.id == 11508 io->io_hdr.nexus.initid.id)) { 11509 /* 11510 * If the abort says that the task is untagged, the 11511 * task in the queue must be untagged. Otherwise, 11512 * we just check to see whether the tag numbers 11513 * match. This is because the QLogic firmware 11514 * doesn't pass back the tag type in an abort 11515 * request. 11516 */ 11517#if 0 11518 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11519 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11520 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11521#endif 11522 /* 11523 * XXX KDM we've got problems with FC, because it 11524 * doesn't send down a tag type with aborts. So we 11525 * can only really go by the tag number... 11526 * This may cause problems with parallel SCSI. 11527 * Need to figure that out!! 11528 */ 11529 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11530 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11531 found = 1; 11532 if ((io->io_hdr.flags & 11533 CTL_FLAG_FROM_OTHER_SC) == 0 && 11534 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11535 union ctl_ha_msg msg_info; 11536 11537 io->io_hdr.flags |= 11538 CTL_FLAG_SENT_2OTHER_SC; 11539 msg_info.hdr.nexus = io->io_hdr.nexus; 11540 msg_info.task.task_action = 11541 CTL_TASK_ABORT_TASK; 11542 msg_info.task.tag_num = 11543 io->taskio.tag_num; 11544 msg_info.task.tag_type = 11545 io->taskio.tag_type; 11546 msg_info.hdr.msg_type = 11547 CTL_MSG_MANAGE_TASKS; 11548 msg_info.hdr.original_sc = NULL; 11549 msg_info.hdr.serializing_sc = NULL; 11550#if 0 11551 printf("Sent Abort to other side\n"); 11552#endif 11553 if (CTL_HA_STATUS_SUCCESS != 11554 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11555 (void *)&msg_info, 11556 sizeof(msg_info), 0)) { 11557 } 11558 } 11559#if 0 11560 printf("ctl_abort_task: found I/O to abort\n"); 11561#endif 11562 break; 11563 } 11564 } 11565 } 11566 11567bailout: 11568 11569 if (found == 0) { 11570 /* 11571 * This isn't really an error. It's entirely possible for 11572 * the abort and command completion to cross on the wire. 11573 * This is more of an informative/diagnostic error. 11574 */ 11575#if 0 11576 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11577 "%d:%d:%d:%d tag %d type %d\n", 11578 io->io_hdr.nexus.initid.id, 11579 io->io_hdr.nexus.targ_port, 11580 io->io_hdr.nexus.targ_target.id, 11581 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11582 io->taskio.tag_type); 11583#endif 11584 return (1); 11585 } else 11586 return (0); 11587} 11588 11589/* 11590 * This routine cannot block! It must be callable from an interrupt 11591 * handler as well as from the work thread. 11592 */ 11593static void 11594ctl_run_task_queue(struct ctl_softc *ctl_softc) 11595{ 11596 union ctl_io *io, *next_io; 11597 11598 mtx_assert(&ctl_softc->ctl_lock, MA_OWNED); 11599 11600 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 11601 11602 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 11603 io != NULL; io = next_io) { 11604 int retval; 11605 const char *task_desc; 11606 11607 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 11608 11609 retval = 0; 11610 11611 switch (io->io_hdr.io_type) { 11612 case CTL_IO_TASK: { 11613 task_desc = ctl_scsi_task_string(&io->taskio); 11614 if (task_desc != NULL) { 11615#ifdef NEEDTOPORT 11616 csevent_log(CSC_CTL | CSC_SHELF_SW | 11617 CTL_TASK_REPORT, 11618 csevent_LogType_Trace, 11619 csevent_Severity_Information, 11620 csevent_AlertLevel_Green, 11621 csevent_FRU_Firmware, 11622 csevent_FRU_Unknown, 11623 "CTL: received task: %s",task_desc); 11624#endif 11625 } else { 11626#ifdef NEEDTOPORT 11627 csevent_log(CSC_CTL | CSC_SHELF_SW | 11628 CTL_TASK_REPORT, 11629 csevent_LogType_Trace, 11630 csevent_Severity_Information, 11631 csevent_AlertLevel_Green, 11632 csevent_FRU_Firmware, 11633 csevent_FRU_Unknown, 11634 "CTL: received unknown task " 11635 "type: %d (%#x)", 11636 io->taskio.task_action, 11637 io->taskio.task_action); 11638#endif 11639 } 11640 switch (io->taskio.task_action) { 11641 case CTL_TASK_ABORT_TASK: 11642 retval = ctl_abort_task(io); 11643 break; 11644 case CTL_TASK_ABORT_TASK_SET: 11645 break; 11646 case CTL_TASK_CLEAR_ACA: 11647 break; 11648 case CTL_TASK_CLEAR_TASK_SET: 11649 break; 11650 case CTL_TASK_LUN_RESET: { 11651 struct ctl_lun *lun; 11652 uint32_t targ_lun; 11653 int retval; 11654 11655 targ_lun = io->io_hdr.nexus.targ_lun; 11656 if (io->io_hdr.nexus.lun_map_fn != NULL) 11657 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11658 11659 if ((targ_lun < CTL_MAX_LUNS) 11660 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11661 lun = ctl_softc->ctl_luns[targ_lun]; 11662 else { 11663 retval = 1; 11664 break; 11665 } 11666 11667 if (!(io->io_hdr.flags & 11668 CTL_FLAG_FROM_OTHER_SC)) { 11669 union ctl_ha_msg msg_info; 11670 11671 io->io_hdr.flags |= 11672 CTL_FLAG_SENT_2OTHER_SC; 11673 msg_info.hdr.msg_type = 11674 CTL_MSG_MANAGE_TASKS; 11675 msg_info.hdr.nexus = io->io_hdr.nexus; 11676 msg_info.task.task_action = 11677 CTL_TASK_LUN_RESET; 11678 msg_info.hdr.original_sc = NULL; 11679 msg_info.hdr.serializing_sc = NULL; 11680 if (CTL_HA_STATUS_SUCCESS != 11681 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11682 (void *)&msg_info, 11683 sizeof(msg_info), 0)) { 11684 } 11685 } 11686 11687 retval = ctl_lun_reset(lun, io, 11688 CTL_UA_LUN_RESET); 11689 break; 11690 } 11691 case CTL_TASK_TARGET_RESET: 11692 retval = ctl_target_reset(ctl_softc, io, 11693 CTL_UA_TARG_RESET); 11694 break; 11695 case CTL_TASK_BUS_RESET: 11696 retval = ctl_bus_reset(ctl_softc, io); 11697 break; 11698 case CTL_TASK_PORT_LOGIN: 11699 break; 11700 case CTL_TASK_PORT_LOGOUT: 11701 break; 11702 default: 11703 printf("ctl_run_task_queue: got unknown task " 11704 "management event %d\n", 11705 io->taskio.task_action); 11706 break; 11707 } 11708 if (retval == 0) 11709 io->io_hdr.status = CTL_SUCCESS; 11710 else 11711 io->io_hdr.status = CTL_ERROR; 11712 11713 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11714 ctl_io_hdr, links); 11715 /* 11716 * This will queue this I/O to the done queue, but the 11717 * work thread won't be able to process it until we 11718 * return and the lock is released. 11719 */ 11720 ctl_done_lock(io, /*have_lock*/ 1); 11721 break; 11722 } 11723 default: { 11724 11725 printf("%s: invalid I/O type %d msg %d cdb %x" 11726 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11727 __func__, io->io_hdr.io_type, 11728 io->io_hdr.msg_type, io->scsiio.cdb[0], 11729 (uintmax_t)io->io_hdr.nexus.initid.id, 11730 io->io_hdr.nexus.targ_port, 11731 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11732 io->io_hdr.nexus.targ_lun /* XXX */, 11733 (io->io_hdr.io_type == CTL_IO_TASK) ? 11734 io->taskio.tag_num : io->scsiio.tag_num); 11735 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11736 ctl_io_hdr, links); 11737 ctl_free_io(io); 11738 break; 11739 } 11740 } 11741 } 11742 11743 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11744} 11745 11746/* 11747 * For HA operation. Handle commands that come in from the other 11748 * controller. 11749 */ 11750static void 11751ctl_handle_isc(union ctl_io *io) 11752{ 11753 int free_io; 11754 struct ctl_lun *lun; 11755 struct ctl_softc *ctl_softc; 11756 uint32_t targ_lun; 11757 11758 ctl_softc = control_softc; 11759 11760 targ_lun = io->io_hdr.nexus.targ_lun; 11761 if (io->io_hdr.nexus.lun_map_fn != NULL) 11762 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11763 lun = ctl_softc->ctl_luns[targ_lun]; 11764 11765 switch (io->io_hdr.msg_type) { 11766 case CTL_MSG_SERIALIZE: 11767 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11768 /*have_lock*/ 0); 11769 break; 11770 case CTL_MSG_R2R: { 11771 uint8_t opcode; 11772 struct ctl_cmd_entry *entry; 11773 11774 /* 11775 * This is only used in SER_ONLY mode. 11776 */ 11777 free_io = 0; 11778 opcode = io->scsiio.cdb[0]; 11779 entry = &ctl_cmd_table[opcode]; 11780 mtx_lock(&ctl_softc->ctl_lock); 11781 if (ctl_scsiio_lun_check(ctl_softc, lun, 11782 entry, (struct ctl_scsiio *)io) != 0) { 11783 ctl_done_lock(io, /*have_lock*/ 1); 11784 mtx_unlock(&ctl_softc->ctl_lock); 11785 break; 11786 } 11787 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11788 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11789 &io->io_hdr, links); 11790 mtx_unlock(&ctl_softc->ctl_lock); 11791 break; 11792 } 11793 case CTL_MSG_FINISH_IO: 11794 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11795 free_io = 0; 11796 ctl_done_lock(io, /*have_lock*/ 0); 11797 } else { 11798 free_io = 1; 11799 mtx_lock(&ctl_softc->ctl_lock); 11800 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11801 ooa_links); 11802 STAILQ_REMOVE(&ctl_softc->task_queue, 11803 &io->io_hdr, ctl_io_hdr, links); 11804 ctl_check_blocked(lun); 11805 mtx_unlock(&ctl_softc->ctl_lock); 11806 } 11807 break; 11808 case CTL_MSG_PERS_ACTION: 11809 ctl_hndl_per_res_out_on_other_sc( 11810 (union ctl_ha_msg *)&io->presio.pr_msg); 11811 free_io = 1; 11812 break; 11813 case CTL_MSG_BAD_JUJU: 11814 free_io = 0; 11815 ctl_done_lock(io, /*have_lock*/ 0); 11816 break; 11817 case CTL_MSG_DATAMOVE: 11818 /* Only used in XFER mode */ 11819 free_io = 0; 11820 ctl_datamove_remote(io); 11821 break; 11822 case CTL_MSG_DATAMOVE_DONE: 11823 /* Only used in XFER mode */ 11824 free_io = 0; 11825 io->scsiio.be_move_done(io); 11826 break; 11827 default: 11828 free_io = 1; 11829 printf("%s: Invalid message type %d\n", 11830 __func__, io->io_hdr.msg_type); 11831 break; 11832 } 11833 if (free_io) 11834 ctl_free_io(io); 11835 11836} 11837 11838 11839/* 11840 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11841 * there is no match. 11842 */ 11843static ctl_lun_error_pattern 11844ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11845{ 11846 struct ctl_cmd_entry *entry; 11847 ctl_lun_error_pattern filtered_pattern, pattern; 11848 uint8_t opcode; 11849 11850 pattern = desc->error_pattern; 11851 11852 /* 11853 * XXX KDM we need more data passed into this function to match a 11854 * custom pattern, and we actually need to implement custom pattern 11855 * matching. 11856 */ 11857 if (pattern & CTL_LUN_PAT_CMD) 11858 return (CTL_LUN_PAT_CMD); 11859 11860 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11861 return (CTL_LUN_PAT_ANY); 11862 11863 opcode = ctsio->cdb[0]; 11864 entry = &ctl_cmd_table[opcode]; 11865 11866 filtered_pattern = entry->pattern & pattern; 11867 11868 /* 11869 * If the user requested specific flags in the pattern (e.g. 11870 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11871 * flags. 11872 * 11873 * If the user did not specify any flags, it doesn't matter whether 11874 * or not the command supports the flags. 11875 */ 11876 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11877 (pattern & ~CTL_LUN_PAT_MASK)) 11878 return (CTL_LUN_PAT_NONE); 11879 11880 /* 11881 * If the user asked for a range check, see if the requested LBA 11882 * range overlaps with this command's LBA range. 11883 */ 11884 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11885 uint64_t lba1; 11886 uint32_t len1; 11887 ctl_action action; 11888 int retval; 11889 11890 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11891 if (retval != 0) 11892 return (CTL_LUN_PAT_NONE); 11893 11894 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11895 desc->lba_range.len); 11896 /* 11897 * A "pass" means that the LBA ranges don't overlap, so 11898 * this doesn't match the user's range criteria. 11899 */ 11900 if (action == CTL_ACTION_PASS) 11901 return (CTL_LUN_PAT_NONE); 11902 } 11903 11904 return (filtered_pattern); 11905} 11906 11907static void 11908ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11909{ 11910 struct ctl_error_desc *desc, *desc2; 11911 11912 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 11913 11914 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11915 ctl_lun_error_pattern pattern; 11916 /* 11917 * Check to see whether this particular command matches 11918 * the pattern in the descriptor. 11919 */ 11920 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11921 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11922 continue; 11923 11924 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11925 case CTL_LUN_INJ_ABORTED: 11926 ctl_set_aborted(&io->scsiio); 11927 break; 11928 case CTL_LUN_INJ_MEDIUM_ERR: 11929 ctl_set_medium_error(&io->scsiio); 11930 break; 11931 case CTL_LUN_INJ_UA: 11932 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11933 * OCCURRED */ 11934 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11935 break; 11936 case CTL_LUN_INJ_CUSTOM: 11937 /* 11938 * We're assuming the user knows what he is doing. 11939 * Just copy the sense information without doing 11940 * checks. 11941 */ 11942 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11943 ctl_min(sizeof(desc->custom_sense), 11944 sizeof(io->scsiio.sense_data))); 11945 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11946 io->scsiio.sense_len = SSD_FULL_SIZE; 11947 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11948 break; 11949 case CTL_LUN_INJ_NONE: 11950 default: 11951 /* 11952 * If this is an error injection type we don't know 11953 * about, clear the continuous flag (if it is set) 11954 * so it will get deleted below. 11955 */ 11956 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11957 break; 11958 } 11959 /* 11960 * By default, each error injection action is a one-shot 11961 */ 11962 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11963 continue; 11964 11965 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11966 11967 free(desc, M_CTL); 11968 } 11969} 11970 11971#ifdef CTL_IO_DELAY 11972static void 11973ctl_datamove_timer_wakeup(void *arg) 11974{ 11975 union ctl_io *io; 11976 11977 io = (union ctl_io *)arg; 11978 11979 ctl_datamove(io); 11980} 11981#endif /* CTL_IO_DELAY */ 11982 11983void 11984ctl_datamove(union ctl_io *io) 11985{ 11986 void (*fe_datamove)(union ctl_io *io); 11987 11988 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 11989 11990 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11991 11992#ifdef CTL_TIME_IO 11993 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11994 char str[256]; 11995 char path_str[64]; 11996 struct sbuf sb; 11997 11998 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11999 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12000 12001 sbuf_cat(&sb, path_str); 12002 switch (io->io_hdr.io_type) { 12003 case CTL_IO_SCSI: 12004 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12005 sbuf_printf(&sb, "\n"); 12006 sbuf_cat(&sb, path_str); 12007 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12008 io->scsiio.tag_num, io->scsiio.tag_type); 12009 break; 12010 case CTL_IO_TASK: 12011 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12012 "Tag Type: %d\n", io->taskio.task_action, 12013 io->taskio.tag_num, io->taskio.tag_type); 12014 break; 12015 default: 12016 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12017 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12018 break; 12019 } 12020 sbuf_cat(&sb, path_str); 12021 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 12022 (intmax_t)time_uptime - io->io_hdr.start_time); 12023 sbuf_finish(&sb); 12024 printf("%s", sbuf_data(&sb)); 12025 } 12026#endif /* CTL_TIME_IO */ 12027 12028 mtx_lock(&control_softc->ctl_lock); 12029#ifdef CTL_IO_DELAY 12030 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12031 struct ctl_lun *lun; 12032 12033 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12034 12035 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12036 } else { 12037 struct ctl_lun *lun; 12038 12039 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12040 if ((lun != NULL) 12041 && (lun->delay_info.datamove_delay > 0)) { 12042 struct callout *callout; 12043 12044 callout = (struct callout *)&io->io_hdr.timer_bytes; 12045 callout_init(callout, /*mpsafe*/ 1); 12046 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12047 callout_reset(callout, 12048 lun->delay_info.datamove_delay * hz, 12049 ctl_datamove_timer_wakeup, io); 12050 if (lun->delay_info.datamove_type == 12051 CTL_DELAY_TYPE_ONESHOT) 12052 lun->delay_info.datamove_delay = 0; 12053 mtx_unlock(&control_softc->ctl_lock); 12054 return; 12055 } 12056 } 12057#endif 12058 /* 12059 * If we have any pending task management commands, process them 12060 * first. This is necessary to eliminate a race condition with the 12061 * FETD: 12062 * 12063 * - FETD submits a task management command, like an abort. 12064 * - Back end calls fe_datamove() to move the data for the aborted 12065 * command. The FETD can't really accept it, but if it did, it 12066 * would end up transmitting data for a command that the initiator 12067 * told us to abort. 12068 * 12069 * We close the race by processing all pending task management 12070 * commands here (we can't block!), and then check this I/O to see 12071 * if it has been aborted. If so, return it to the back end with 12072 * bad status, so the back end can say return an error to the back end 12073 * and then when the back end returns an error, we can return the 12074 * aborted command to the FETD, so it can clean up its resources. 12075 */ 12076 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 12077 ctl_run_task_queue(control_softc); 12078 12079 /* 12080 * This command has been aborted. Set the port status, so we fail 12081 * the data move. 12082 */ 12083 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12084 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 12085 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 12086 io->io_hdr.nexus.targ_port, 12087 (uintmax_t)io->io_hdr.nexus.targ_target.id, 12088 io->io_hdr.nexus.targ_lun); 12089 io->io_hdr.status = CTL_CMD_ABORTED; 12090 io->io_hdr.port_status = 31337; 12091 mtx_unlock(&control_softc->ctl_lock); 12092 /* 12093 * Note that the backend, in this case, will get the 12094 * callback in its context. In other cases it may get 12095 * called in the frontend's interrupt thread context. 12096 */ 12097 io->scsiio.be_move_done(io); 12098 return; 12099 } 12100 12101 /* 12102 * If we're in XFER mode and this I/O is from the other shelf 12103 * controller, we need to send the DMA to the other side to 12104 * actually transfer the data to/from the host. In serialize only 12105 * mode the transfer happens below CTL and ctl_datamove() is only 12106 * called on the machine that originally received the I/O. 12107 */ 12108 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 12109 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12110 union ctl_ha_msg msg; 12111 uint32_t sg_entries_sent; 12112 int do_sg_copy; 12113 int i; 12114 12115 memset(&msg, 0, sizeof(msg)); 12116 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 12117 msg.hdr.original_sc = io->io_hdr.original_sc; 12118 msg.hdr.serializing_sc = io; 12119 msg.hdr.nexus = io->io_hdr.nexus; 12120 msg.dt.flags = io->io_hdr.flags; 12121 /* 12122 * We convert everything into a S/G list here. We can't 12123 * pass by reference, only by value between controllers. 12124 * So we can't pass a pointer to the S/G list, only as many 12125 * S/G entries as we can fit in here. If it's possible for 12126 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 12127 * then we need to break this up into multiple transfers. 12128 */ 12129 if (io->scsiio.kern_sg_entries == 0) { 12130 msg.dt.kern_sg_entries = 1; 12131 /* 12132 * If this is in cached memory, flush the cache 12133 * before we send the DMA request to the other 12134 * controller. We want to do this in either the 12135 * read or the write case. The read case is 12136 * straightforward. In the write case, we want to 12137 * make sure nothing is in the local cache that 12138 * could overwrite the DMAed data. 12139 */ 12140 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12141 /* 12142 * XXX KDM use bus_dmamap_sync() here. 12143 */ 12144 } 12145 12146 /* 12147 * Convert to a physical address if this is a 12148 * virtual address. 12149 */ 12150 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 12151 msg.dt.sg_list[0].addr = 12152 io->scsiio.kern_data_ptr; 12153 } else { 12154 /* 12155 * XXX KDM use busdma here! 12156 */ 12157#if 0 12158 msg.dt.sg_list[0].addr = (void *) 12159 vtophys(io->scsiio.kern_data_ptr); 12160#endif 12161 } 12162 12163 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 12164 do_sg_copy = 0; 12165 } else { 12166 struct ctl_sg_entry *sgl; 12167 12168 do_sg_copy = 1; 12169 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 12170 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 12171 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12172 /* 12173 * XXX KDM use bus_dmamap_sync() here. 12174 */ 12175 } 12176 } 12177 12178 msg.dt.kern_data_len = io->scsiio.kern_data_len; 12179 msg.dt.kern_total_len = io->scsiio.kern_total_len; 12180 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 12181 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 12182 msg.dt.sg_sequence = 0; 12183 12184 /* 12185 * Loop until we've sent all of the S/G entries. On the 12186 * other end, we'll recompose these S/G entries into one 12187 * contiguous list before passing it to the 12188 */ 12189 for (sg_entries_sent = 0; sg_entries_sent < 12190 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 12191 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 12192 sizeof(msg.dt.sg_list[0])), 12193 msg.dt.kern_sg_entries - sg_entries_sent); 12194 12195 if (do_sg_copy != 0) { 12196 struct ctl_sg_entry *sgl; 12197 int j; 12198 12199 sgl = (struct ctl_sg_entry *) 12200 io->scsiio.kern_data_ptr; 12201 /* 12202 * If this is in cached memory, flush the cache 12203 * before we send the DMA request to the other 12204 * controller. We want to do this in either 12205 * the * read or the write case. The read 12206 * case is straightforward. In the write 12207 * case, we want to make sure nothing is 12208 * in the local cache that could overwrite 12209 * the DMAed data. 12210 */ 12211 12212 for (i = sg_entries_sent, j = 0; 12213 i < msg.dt.cur_sg_entries; i++, j++) { 12214 if ((io->io_hdr.flags & 12215 CTL_FLAG_NO_DATASYNC) == 0) { 12216 /* 12217 * XXX KDM use bus_dmamap_sync() 12218 */ 12219 } 12220 if ((io->io_hdr.flags & 12221 CTL_FLAG_BUS_ADDR) == 0) { 12222 /* 12223 * XXX KDM use busdma. 12224 */ 12225#if 0 12226 msg.dt.sg_list[j].addr =(void *) 12227 vtophys(sgl[i].addr); 12228#endif 12229 } else { 12230 msg.dt.sg_list[j].addr = 12231 sgl[i].addr; 12232 } 12233 msg.dt.sg_list[j].len = sgl[i].len; 12234 } 12235 } 12236 12237 sg_entries_sent += msg.dt.cur_sg_entries; 12238 if (sg_entries_sent >= msg.dt.kern_sg_entries) 12239 msg.dt.sg_last = 1; 12240 else 12241 msg.dt.sg_last = 0; 12242 12243 /* 12244 * XXX KDM drop and reacquire the lock here? 12245 */ 12246 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12247 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12248 /* 12249 * XXX do something here. 12250 */ 12251 } 12252 12253 msg.dt.sent_sg_entries = sg_entries_sent; 12254 } 12255 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12256 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 12257 ctl_failover_io(io, /*have_lock*/ 1); 12258 12259 } else { 12260 12261 /* 12262 * Lookup the fe_datamove() function for this particular 12263 * front end. 12264 */ 12265 fe_datamove = 12266 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12267 mtx_unlock(&control_softc->ctl_lock); 12268 12269 fe_datamove(io); 12270 } 12271} 12272 12273static void 12274ctl_send_datamove_done(union ctl_io *io, int have_lock) 12275{ 12276 union ctl_ha_msg msg; 12277 int isc_status; 12278 12279 memset(&msg, 0, sizeof(msg)); 12280 12281 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 12282 msg.hdr.original_sc = io; 12283 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 12284 msg.hdr.nexus = io->io_hdr.nexus; 12285 msg.hdr.status = io->io_hdr.status; 12286 msg.scsi.tag_num = io->scsiio.tag_num; 12287 msg.scsi.tag_type = io->scsiio.tag_type; 12288 msg.scsi.scsi_status = io->scsiio.scsi_status; 12289 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12290 sizeof(io->scsiio.sense_data)); 12291 msg.scsi.sense_len = io->scsiio.sense_len; 12292 msg.scsi.sense_residual = io->scsiio.sense_residual; 12293 msg.scsi.fetd_status = io->io_hdr.port_status; 12294 msg.scsi.residual = io->scsiio.residual; 12295 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12296 12297 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12298 ctl_failover_io(io, /*have_lock*/ have_lock); 12299 return; 12300 } 12301 12302 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 12303 if (isc_status > CTL_HA_STATUS_SUCCESS) { 12304 /* XXX do something if this fails */ 12305 } 12306 12307} 12308 12309/* 12310 * The DMA to the remote side is done, now we need to tell the other side 12311 * we're done so it can continue with its data movement. 12312 */ 12313static void 12314ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12315{ 12316 union ctl_io *io; 12317 12318 io = rq->context; 12319 12320 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12321 printf("%s: ISC DMA write failed with error %d", __func__, 12322 rq->ret); 12323 ctl_set_internal_failure(&io->scsiio, 12324 /*sks_valid*/ 1, 12325 /*retry_count*/ rq->ret); 12326 } 12327 12328 ctl_dt_req_free(rq); 12329 12330 /* 12331 * In this case, we had to malloc the memory locally. Free it. 12332 */ 12333 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12334 int i; 12335 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12336 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12337 } 12338 /* 12339 * The data is in local and remote memory, so now we need to send 12340 * status (good or back) back to the other side. 12341 */ 12342 ctl_send_datamove_done(io, /*have_lock*/ 0); 12343} 12344 12345/* 12346 * We've moved the data from the host/controller into local memory. Now we 12347 * need to push it over to the remote controller's memory. 12348 */ 12349static int 12350ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12351{ 12352 int retval; 12353 12354 retval = 0; 12355 12356 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12357 ctl_datamove_remote_write_cb); 12358 12359 return (retval); 12360} 12361 12362static void 12363ctl_datamove_remote_write(union ctl_io *io) 12364{ 12365 int retval; 12366 void (*fe_datamove)(union ctl_io *io); 12367 12368 /* 12369 * - Get the data from the host/HBA into local memory. 12370 * - DMA memory from the local controller to the remote controller. 12371 * - Send status back to the remote controller. 12372 */ 12373 12374 retval = ctl_datamove_remote_sgl_setup(io); 12375 if (retval != 0) 12376 return; 12377 12378 /* Switch the pointer over so the FETD knows what to do */ 12379 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12380 12381 /* 12382 * Use a custom move done callback, since we need to send completion 12383 * back to the other controller, not to the backend on this side. 12384 */ 12385 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12386 12387 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12388 12389 fe_datamove(io); 12390 12391 return; 12392 12393} 12394 12395static int 12396ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12397{ 12398#if 0 12399 char str[256]; 12400 char path_str[64]; 12401 struct sbuf sb; 12402#endif 12403 12404 /* 12405 * In this case, we had to malloc the memory locally. Free it. 12406 */ 12407 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12408 int i; 12409 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12410 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12411 } 12412 12413#if 0 12414 scsi_path_string(io, path_str, sizeof(path_str)); 12415 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12416 sbuf_cat(&sb, path_str); 12417 scsi_command_string(&io->scsiio, NULL, &sb); 12418 sbuf_printf(&sb, "\n"); 12419 sbuf_cat(&sb, path_str); 12420 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12421 io->scsiio.tag_num, io->scsiio.tag_type); 12422 sbuf_cat(&sb, path_str); 12423 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12424 io->io_hdr.flags, io->io_hdr.status); 12425 sbuf_finish(&sb); 12426 printk("%s", sbuf_data(&sb)); 12427#endif 12428 12429 12430 /* 12431 * The read is done, now we need to send status (good or bad) back 12432 * to the other side. 12433 */ 12434 ctl_send_datamove_done(io, /*have_lock*/ 0); 12435 12436 return (0); 12437} 12438 12439static void 12440ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12441{ 12442 union ctl_io *io; 12443 void (*fe_datamove)(union ctl_io *io); 12444 12445 io = rq->context; 12446 12447 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12448 printf("%s: ISC DMA read failed with error %d", __func__, 12449 rq->ret); 12450 ctl_set_internal_failure(&io->scsiio, 12451 /*sks_valid*/ 1, 12452 /*retry_count*/ rq->ret); 12453 } 12454 12455 ctl_dt_req_free(rq); 12456 12457 /* Switch the pointer over so the FETD knows what to do */ 12458 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12459 12460 /* 12461 * Use a custom move done callback, since we need to send completion 12462 * back to the other controller, not to the backend on this side. 12463 */ 12464 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12465 12466 /* XXX KDM add checks like the ones in ctl_datamove? */ 12467 12468 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12469 12470 fe_datamove(io); 12471} 12472 12473static int 12474ctl_datamove_remote_sgl_setup(union ctl_io *io) 12475{ 12476 struct ctl_sg_entry *local_sglist, *remote_sglist; 12477 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12478 struct ctl_softc *softc; 12479 int retval; 12480 int i; 12481 12482 retval = 0; 12483 softc = control_softc; 12484 12485 local_sglist = io->io_hdr.local_sglist; 12486 local_dma_sglist = io->io_hdr.local_dma_sglist; 12487 remote_sglist = io->io_hdr.remote_sglist; 12488 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12489 12490 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12491 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12492 local_sglist[i].len = remote_sglist[i].len; 12493 12494 /* 12495 * XXX Detect the situation where the RS-level I/O 12496 * redirector on the other side has already read the 12497 * data off of the AOR RS on this side, and 12498 * transferred it to remote (mirror) memory on the 12499 * other side. Since we already have the data in 12500 * memory here, we just need to use it. 12501 * 12502 * XXX KDM this can probably be removed once we 12503 * get the cache device code in and take the 12504 * current AOR implementation out. 12505 */ 12506#ifdef NEEDTOPORT 12507 if ((remote_sglist[i].addr >= 12508 (void *)vtophys(softc->mirr->addr)) 12509 && (remote_sglist[i].addr < 12510 ((void *)vtophys(softc->mirr->addr) + 12511 CacheMirrorOffset))) { 12512 local_sglist[i].addr = remote_sglist[i].addr - 12513 CacheMirrorOffset; 12514 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12515 CTL_FLAG_DATA_IN) 12516 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12517 } else { 12518 local_sglist[i].addr = remote_sglist[i].addr + 12519 CacheMirrorOffset; 12520 } 12521#endif 12522#if 0 12523 printf("%s: local %p, remote %p, len %d\n", 12524 __func__, local_sglist[i].addr, 12525 remote_sglist[i].addr, local_sglist[i].len); 12526#endif 12527 } 12528 } else { 12529 uint32_t len_to_go; 12530 12531 /* 12532 * In this case, we don't have automatically allocated 12533 * memory for this I/O on this controller. This typically 12534 * happens with internal CTL I/O -- e.g. inquiry, mode 12535 * sense, etc. Anything coming from RAIDCore will have 12536 * a mirror area available. 12537 */ 12538 len_to_go = io->scsiio.kern_data_len; 12539 12540 /* 12541 * Clear the no datasync flag, we have to use malloced 12542 * buffers. 12543 */ 12544 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12545 12546 /* 12547 * The difficult thing here is that the size of the various 12548 * S/G segments may be different than the size from the 12549 * remote controller. That'll make it harder when DMAing 12550 * the data back to the other side. 12551 */ 12552 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12553 sizeof(io->io_hdr.remote_sglist[0])) && 12554 (len_to_go > 0); i++) { 12555 local_sglist[i].len = ctl_min(len_to_go, 131072); 12556 CTL_SIZE_8B(local_dma_sglist[i].len, 12557 local_sglist[i].len); 12558 local_sglist[i].addr = 12559 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12560 12561 local_dma_sglist[i].addr = local_sglist[i].addr; 12562 12563 if (local_sglist[i].addr == NULL) { 12564 int j; 12565 12566 printf("malloc failed for %zd bytes!", 12567 local_dma_sglist[i].len); 12568 for (j = 0; j < i; j++) { 12569 free(local_sglist[j].addr, M_CTL); 12570 } 12571 ctl_set_internal_failure(&io->scsiio, 12572 /*sks_valid*/ 1, 12573 /*retry_count*/ 4857); 12574 retval = 1; 12575 goto bailout_error; 12576 12577 } 12578 /* XXX KDM do we need a sync here? */ 12579 12580 len_to_go -= local_sglist[i].len; 12581 } 12582 /* 12583 * Reset the number of S/G entries accordingly. The 12584 * original number of S/G entries is available in 12585 * rem_sg_entries. 12586 */ 12587 io->scsiio.kern_sg_entries = i; 12588 12589#if 0 12590 printf("%s: kern_sg_entries = %d\n", __func__, 12591 io->scsiio.kern_sg_entries); 12592 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12593 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12594 local_sglist[i].addr, local_sglist[i].len, 12595 local_dma_sglist[i].len); 12596#endif 12597 } 12598 12599 12600 return (retval); 12601 12602bailout_error: 12603 12604 ctl_send_datamove_done(io, /*have_lock*/ 0); 12605 12606 return (retval); 12607} 12608 12609static int 12610ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12611 ctl_ha_dt_cb callback) 12612{ 12613 struct ctl_ha_dt_req *rq; 12614 struct ctl_sg_entry *remote_sglist, *local_sglist; 12615 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12616 uint32_t local_used, remote_used, total_used; 12617 int retval; 12618 int i, j; 12619 12620 retval = 0; 12621 12622 rq = ctl_dt_req_alloc(); 12623 12624 /* 12625 * If we failed to allocate the request, and if the DMA didn't fail 12626 * anyway, set busy status. This is just a resource allocation 12627 * failure. 12628 */ 12629 if ((rq == NULL) 12630 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12631 ctl_set_busy(&io->scsiio); 12632 12633 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12634 12635 if (rq != NULL) 12636 ctl_dt_req_free(rq); 12637 12638 /* 12639 * The data move failed. We need to return status back 12640 * to the other controller. No point in trying to DMA 12641 * data to the remote controller. 12642 */ 12643 12644 ctl_send_datamove_done(io, /*have_lock*/ 0); 12645 12646 retval = 1; 12647 12648 goto bailout; 12649 } 12650 12651 local_sglist = io->io_hdr.local_sglist; 12652 local_dma_sglist = io->io_hdr.local_dma_sglist; 12653 remote_sglist = io->io_hdr.remote_sglist; 12654 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12655 local_used = 0; 12656 remote_used = 0; 12657 total_used = 0; 12658 12659 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12660 rq->ret = CTL_HA_STATUS_SUCCESS; 12661 rq->context = io; 12662 callback(rq); 12663 goto bailout; 12664 } 12665 12666 /* 12667 * Pull/push the data over the wire from/to the other controller. 12668 * This takes into account the possibility that the local and 12669 * remote sglists may not be identical in terms of the size of 12670 * the elements and the number of elements. 12671 * 12672 * One fundamental assumption here is that the length allocated for 12673 * both the local and remote sglists is identical. Otherwise, we've 12674 * essentially got a coding error of some sort. 12675 */ 12676 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12677 int isc_ret; 12678 uint32_t cur_len, dma_length; 12679 uint8_t *tmp_ptr; 12680 12681 rq->id = CTL_HA_DATA_CTL; 12682 rq->command = command; 12683 rq->context = io; 12684 12685 /* 12686 * Both pointers should be aligned. But it is possible 12687 * that the allocation length is not. They should both 12688 * also have enough slack left over at the end, though, 12689 * to round up to the next 8 byte boundary. 12690 */ 12691 cur_len = ctl_min(local_sglist[i].len - local_used, 12692 remote_sglist[j].len - remote_used); 12693 12694 /* 12695 * In this case, we have a size issue and need to decrease 12696 * the size, except in the case where we actually have less 12697 * than 8 bytes left. In that case, we need to increase 12698 * the DMA length to get the last bit. 12699 */ 12700 if ((cur_len & 0x7) != 0) { 12701 if (cur_len > 0x7) { 12702 cur_len = cur_len - (cur_len & 0x7); 12703 dma_length = cur_len; 12704 } else { 12705 CTL_SIZE_8B(dma_length, cur_len); 12706 } 12707 12708 } else 12709 dma_length = cur_len; 12710 12711 /* 12712 * If we had to allocate memory for this I/O, instead of using 12713 * the non-cached mirror memory, we'll need to flush the cache 12714 * before trying to DMA to the other controller. 12715 * 12716 * We could end up doing this multiple times for the same 12717 * segment if we have a larger local segment than remote 12718 * segment. That shouldn't be an issue. 12719 */ 12720 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12721 /* 12722 * XXX KDM use bus_dmamap_sync() here. 12723 */ 12724 } 12725 12726 rq->size = dma_length; 12727 12728 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12729 tmp_ptr += local_used; 12730 12731 /* Use physical addresses when talking to ISC hardware */ 12732 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12733 /* XXX KDM use busdma */ 12734#if 0 12735 rq->local = vtophys(tmp_ptr); 12736#endif 12737 } else 12738 rq->local = tmp_ptr; 12739 12740 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12741 tmp_ptr += remote_used; 12742 rq->remote = tmp_ptr; 12743 12744 rq->callback = NULL; 12745 12746 local_used += cur_len; 12747 if (local_used >= local_sglist[i].len) { 12748 i++; 12749 local_used = 0; 12750 } 12751 12752 remote_used += cur_len; 12753 if (remote_used >= remote_sglist[j].len) { 12754 j++; 12755 remote_used = 0; 12756 } 12757 total_used += cur_len; 12758 12759 if (total_used >= io->scsiio.kern_data_len) 12760 rq->callback = callback; 12761 12762 if ((rq->size & 0x7) != 0) { 12763 printf("%s: warning: size %d is not on 8b boundary\n", 12764 __func__, rq->size); 12765 } 12766 if (((uintptr_t)rq->local & 0x7) != 0) { 12767 printf("%s: warning: local %p not on 8b boundary\n", 12768 __func__, rq->local); 12769 } 12770 if (((uintptr_t)rq->remote & 0x7) != 0) { 12771 printf("%s: warning: remote %p not on 8b boundary\n", 12772 __func__, rq->local); 12773 } 12774#if 0 12775 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12776 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12777 rq->local, rq->remote, rq->size); 12778#endif 12779 12780 isc_ret = ctl_dt_single(rq); 12781 if (isc_ret == CTL_HA_STATUS_WAIT) 12782 continue; 12783 12784 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12785 rq->ret = CTL_HA_STATUS_SUCCESS; 12786 } else { 12787 rq->ret = isc_ret; 12788 } 12789 callback(rq); 12790 goto bailout; 12791 } 12792 12793bailout: 12794 return (retval); 12795 12796} 12797 12798static void 12799ctl_datamove_remote_read(union ctl_io *io) 12800{ 12801 int retval; 12802 int i; 12803 12804 /* 12805 * This will send an error to the other controller in the case of a 12806 * failure. 12807 */ 12808 retval = ctl_datamove_remote_sgl_setup(io); 12809 if (retval != 0) 12810 return; 12811 12812 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12813 ctl_datamove_remote_read_cb); 12814 if ((retval != 0) 12815 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12816 /* 12817 * Make sure we free memory if there was an error.. The 12818 * ctl_datamove_remote_xfer() function will send the 12819 * datamove done message, or call the callback with an 12820 * error if there is a problem. 12821 */ 12822 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12823 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12824 } 12825 12826 return; 12827} 12828 12829/* 12830 * Process a datamove request from the other controller. This is used for 12831 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12832 * first. Once that is complete, the data gets DMAed into the remote 12833 * controller's memory. For reads, we DMA from the remote controller's 12834 * memory into our memory first, and then move it out to the FETD. 12835 */ 12836static void 12837ctl_datamove_remote(union ctl_io *io) 12838{ 12839 struct ctl_softc *softc; 12840 12841 softc = control_softc; 12842 12843 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12844 12845 /* 12846 * Note that we look for an aborted I/O here, but don't do some of 12847 * the other checks that ctl_datamove() normally does. We don't 12848 * need to run the task queue, because this I/O is on the ISC 12849 * queue, which is executed by the work thread after the task queue. 12850 * We don't need to run the datamove delay code, since that should 12851 * have been done if need be on the other controller. 12852 */ 12853 mtx_lock(&softc->ctl_lock); 12854 12855 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12856 12857 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12858 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12859 io->io_hdr.nexus.targ_port, 12860 io->io_hdr.nexus.targ_target.id, 12861 io->io_hdr.nexus.targ_lun); 12862 io->io_hdr.status = CTL_CMD_ABORTED; 12863 io->io_hdr.port_status = 31338; 12864 12865 mtx_unlock(&softc->ctl_lock); 12866 12867 ctl_send_datamove_done(io, /*have_lock*/ 0); 12868 12869 return; 12870 } 12871 12872 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12873 mtx_unlock(&softc->ctl_lock); 12874 ctl_datamove_remote_write(io); 12875 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12876 mtx_unlock(&softc->ctl_lock); 12877 ctl_datamove_remote_read(io); 12878 } else { 12879 union ctl_ha_msg msg; 12880 struct scsi_sense_data *sense; 12881 uint8_t sks[3]; 12882 int retry_count; 12883 12884 memset(&msg, 0, sizeof(msg)); 12885 12886 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12887 msg.hdr.status = CTL_SCSI_ERROR; 12888 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12889 12890 retry_count = 4243; 12891 12892 sense = &msg.scsi.sense_data; 12893 sks[0] = SSD_SCS_VALID; 12894 sks[1] = (retry_count >> 8) & 0xff; 12895 sks[2] = retry_count & 0xff; 12896 12897 /* "Internal target failure" */ 12898 scsi_set_sense_data(sense, 12899 /*sense_format*/ SSD_TYPE_NONE, 12900 /*current_error*/ 1, 12901 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12902 /*asc*/ 0x44, 12903 /*ascq*/ 0x00, 12904 /*type*/ SSD_ELEM_SKS, 12905 /*size*/ sizeof(sks), 12906 /*data*/ sks, 12907 SSD_ELEM_NONE); 12908 12909 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12910 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12911 ctl_failover_io(io, /*have_lock*/ 1); 12912 mtx_unlock(&softc->ctl_lock); 12913 return; 12914 } 12915 12916 mtx_unlock(&softc->ctl_lock); 12917 12918 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12919 CTL_HA_STATUS_SUCCESS) { 12920 /* XXX KDM what to do if this fails? */ 12921 } 12922 return; 12923 } 12924 12925} 12926 12927static int 12928ctl_process_done(union ctl_io *io, int have_lock) 12929{ 12930 struct ctl_lun *lun; 12931 struct ctl_softc *ctl_softc; 12932 void (*fe_done)(union ctl_io *io); 12933 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12934 12935 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12936 12937 fe_done = 12938 control_softc->ctl_ports[targ_port]->fe_done; 12939 12940#ifdef CTL_TIME_IO 12941 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12942 char str[256]; 12943 char path_str[64]; 12944 struct sbuf sb; 12945 12946 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12947 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12948 12949 sbuf_cat(&sb, path_str); 12950 switch (io->io_hdr.io_type) { 12951 case CTL_IO_SCSI: 12952 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12953 sbuf_printf(&sb, "\n"); 12954 sbuf_cat(&sb, path_str); 12955 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12956 io->scsiio.tag_num, io->scsiio.tag_type); 12957 break; 12958 case CTL_IO_TASK: 12959 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12960 "Tag Type: %d\n", io->taskio.task_action, 12961 io->taskio.tag_num, io->taskio.tag_type); 12962 break; 12963 default: 12964 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12965 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12966 break; 12967 } 12968 sbuf_cat(&sb, path_str); 12969 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12970 (intmax_t)time_uptime - io->io_hdr.start_time); 12971 sbuf_finish(&sb); 12972 printf("%s", sbuf_data(&sb)); 12973 } 12974#endif /* CTL_TIME_IO */ 12975 12976 switch (io->io_hdr.io_type) { 12977 case CTL_IO_SCSI: 12978 break; 12979 case CTL_IO_TASK: 12980 if (bootverbose || verbose > 0) 12981 ctl_io_error_print(io, NULL); 12982 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12983 ctl_free_io(io); 12984 else 12985 fe_done(io); 12986 return (CTL_RETVAL_COMPLETE); 12987 break; 12988 default: 12989 printf("ctl_process_done: invalid io type %d\n", 12990 io->io_hdr.io_type); 12991 panic("ctl_process_done: invalid io type %d\n", 12992 io->io_hdr.io_type); 12993 break; /* NOTREACHED */ 12994 } 12995 12996 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12997 if (lun == NULL) { 12998 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12999 io->io_hdr.nexus.targ_lun)); 13000 fe_done(io); 13001 goto bailout; 13002 } 13003 ctl_softc = lun->ctl_softc; 13004 13005 /* 13006 * Remove this from the OOA queue. 13007 */ 13008 if (have_lock == 0) 13009 mtx_lock(&ctl_softc->ctl_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 uint32_t blocksize; 13027#ifdef CTL_TIME_IO 13028 struct bintime cur_bt; 13029#endif 13030 13031 if ((lun->be_lun != NULL) 13032 && (lun->be_lun->blocksize != 0)) 13033 blocksize = lun->be_lun->blocksize; 13034 else 13035 blocksize = 512; 13036 13037 switch (io->io_hdr.io_type) { 13038 case CTL_IO_SCSI: { 13039 int isread; 13040 struct ctl_lba_len_flags *lbalen; 13041 13042 isread = 0; 13043 switch (io->scsiio.cdb[0]) { 13044 case READ_6: 13045 case READ_10: 13046 case READ_12: 13047 case READ_16: 13048 isread = 1; 13049 /* FALLTHROUGH */ 13050 case WRITE_6: 13051 case WRITE_10: 13052 case WRITE_12: 13053 case WRITE_16: 13054 case WRITE_VERIFY_10: 13055 case WRITE_VERIFY_12: 13056 case WRITE_VERIFY_16: 13057 lbalen = (struct ctl_lba_len_flags *) 13058 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 13059 13060 if (isread) { 13061 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 13062 lbalen->len * blocksize; 13063 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 13064 13065#ifdef CTL_TIME_IO 13066 bintime_add( 13067 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 13068 &io->io_hdr.dma_bt); 13069 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 13070 io->io_hdr.num_dmas; 13071 getbintime(&cur_bt); 13072 bintime_sub(&cur_bt, 13073 &io->io_hdr.start_bt); 13074 13075 bintime_add( 13076 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 13077 &cur_bt); 13078 13079#if 0 13080 cs_prof_gettime(&cur_ticks); 13081 lun->stats.time[CTL_STATS_READ] += 13082 cur_ticks - 13083 io->io_hdr.start_ticks; 13084#endif 13085#if 0 13086 lun->stats.time[CTL_STATS_READ] += 13087 jiffies - io->io_hdr.start_time; 13088#endif 13089#endif /* CTL_TIME_IO */ 13090 } else { 13091 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 13092 lbalen->len * blocksize; 13093 lun->stats.ports[targ_port].operations[ 13094 CTL_STATS_WRITE]++; 13095 13096#ifdef CTL_TIME_IO 13097 bintime_add( 13098 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 13099 &io->io_hdr.dma_bt); 13100 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 13101 io->io_hdr.num_dmas; 13102 getbintime(&cur_bt); 13103 bintime_sub(&cur_bt, 13104 &io->io_hdr.start_bt); 13105 13106 bintime_add( 13107 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 13108 &cur_bt); 13109#if 0 13110 cs_prof_gettime(&cur_ticks); 13111 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 13112 cur_ticks - 13113 io->io_hdr.start_ticks; 13114 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 13115 jiffies - io->io_hdr.start_time; 13116#endif 13117#endif /* CTL_TIME_IO */ 13118 } 13119 break; 13120 default: 13121 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 13122 13123#ifdef CTL_TIME_IO 13124 bintime_add( 13125 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 13126 &io->io_hdr.dma_bt); 13127 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 13128 io->io_hdr.num_dmas; 13129 getbintime(&cur_bt); 13130 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 13131 13132 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 13133 &cur_bt); 13134 13135#if 0 13136 cs_prof_gettime(&cur_ticks); 13137 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 13138 cur_ticks - 13139 io->io_hdr.start_ticks; 13140 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 13141 jiffies - io->io_hdr.start_time; 13142#endif 13143#endif /* CTL_TIME_IO */ 13144 break; 13145 } 13146 break; 13147 } 13148 default: 13149 break; 13150 } 13151 } 13152 13153 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 13154 13155 /* 13156 * Run through the blocked queue on this LUN and see if anything 13157 * has become unblocked, now that this transaction is done. 13158 */ 13159 ctl_check_blocked(lun); 13160 13161 /* 13162 * If the LUN has been invalidated, free it if there is nothing 13163 * left on its OOA queue. 13164 */ 13165 if ((lun->flags & CTL_LUN_INVALID) 13166 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 13167 ctl_free_lun(lun); 13168 13169 /* 13170 * If this command has been aborted, make sure we set the status 13171 * properly. The FETD is responsible for freeing the I/O and doing 13172 * whatever it needs to do to clean up its state. 13173 */ 13174 if (io->io_hdr.flags & CTL_FLAG_ABORT) 13175 io->io_hdr.status = CTL_CMD_ABORTED; 13176 13177 /* 13178 * We print out status for every task management command. For SCSI 13179 * commands, we filter out any unit attention errors; they happen 13180 * on every boot, and would clutter up the log. Note: task 13181 * management commands aren't printed here, they are printed above, 13182 * since they should never even make it down here. 13183 */ 13184 switch (io->io_hdr.io_type) { 13185 case CTL_IO_SCSI: { 13186 int error_code, sense_key, asc, ascq; 13187 13188 sense_key = 0; 13189 13190 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 13191 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 13192 /* 13193 * Since this is just for printing, no need to 13194 * show errors here. 13195 */ 13196 scsi_extract_sense_len(&io->scsiio.sense_data, 13197 io->scsiio.sense_len, 13198 &error_code, 13199 &sense_key, 13200 &asc, 13201 &ascq, 13202 /*show_errors*/ 0); 13203 } 13204 13205 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 13206 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 13207 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 13208 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 13209 13210 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 13211 ctl_softc->skipped_prints++; 13212 if (have_lock == 0) 13213 mtx_unlock(&ctl_softc->ctl_lock); 13214 } else { 13215 uint32_t skipped_prints; 13216 13217 skipped_prints = ctl_softc->skipped_prints; 13218 13219 ctl_softc->skipped_prints = 0; 13220 ctl_softc->last_print_jiffies = time_uptime; 13221 13222 if (have_lock == 0) 13223 mtx_unlock(&ctl_softc->ctl_lock); 13224 if (skipped_prints > 0) { 13225#ifdef NEEDTOPORT 13226 csevent_log(CSC_CTL | CSC_SHELF_SW | 13227 CTL_ERROR_REPORT, 13228 csevent_LogType_Trace, 13229 csevent_Severity_Information, 13230 csevent_AlertLevel_Green, 13231 csevent_FRU_Firmware, 13232 csevent_FRU_Unknown, 13233 "High CTL error volume, %d prints " 13234 "skipped", skipped_prints); 13235#endif 13236 } 13237 if (bootverbose || verbose > 0) 13238 ctl_io_error_print(io, NULL); 13239 } 13240 } else { 13241 if (have_lock == 0) 13242 mtx_unlock(&ctl_softc->ctl_lock); 13243 } 13244 break; 13245 } 13246 case CTL_IO_TASK: 13247 if (have_lock == 0) 13248 mtx_unlock(&ctl_softc->ctl_lock); 13249 if (bootverbose || verbose > 0) 13250 ctl_io_error_print(io, NULL); 13251 break; 13252 default: 13253 if (have_lock == 0) 13254 mtx_unlock(&ctl_softc->ctl_lock); 13255 break; 13256 } 13257 13258 /* 13259 * Tell the FETD or the other shelf controller we're done with this 13260 * command. Note that only SCSI commands get to this point. Task 13261 * management commands are completed above. 13262 * 13263 * We only send status to the other controller if we're in XFER 13264 * mode. In SER_ONLY mode, the I/O is done on the controller that 13265 * received the I/O (from CTL's perspective), and so the status is 13266 * generated there. 13267 * 13268 * XXX KDM if we hold the lock here, we could cause a deadlock 13269 * if the frontend comes back in in this context to queue 13270 * something. 13271 */ 13272 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 13273 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 13274 union ctl_ha_msg msg; 13275 13276 memset(&msg, 0, sizeof(msg)); 13277 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 13278 msg.hdr.original_sc = io->io_hdr.original_sc; 13279 msg.hdr.nexus = io->io_hdr.nexus; 13280 msg.hdr.status = io->io_hdr.status; 13281 msg.scsi.scsi_status = io->scsiio.scsi_status; 13282 msg.scsi.tag_num = io->scsiio.tag_num; 13283 msg.scsi.tag_type = io->scsiio.tag_type; 13284 msg.scsi.sense_len = io->scsiio.sense_len; 13285 msg.scsi.sense_residual = io->scsiio.sense_residual; 13286 msg.scsi.residual = io->scsiio.residual; 13287 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 13288 sizeof(io->scsiio.sense_data)); 13289 /* 13290 * We copy this whether or not this is an I/O-related 13291 * command. Otherwise, we'd have to go and check to see 13292 * whether it's a read/write command, and it really isn't 13293 * worth it. 13294 */ 13295 memcpy(&msg.scsi.lbalen, 13296 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 13297 sizeof(msg.scsi.lbalen)); 13298 13299 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 13300 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 13301 /* XXX do something here */ 13302 } 13303 13304 ctl_free_io(io); 13305 } else 13306 fe_done(io); 13307 13308bailout: 13309 13310 return (CTL_RETVAL_COMPLETE); 13311} 13312 13313/* 13314 * Front end should call this if it doesn't do autosense. When the request 13315 * sense comes back in from the initiator, we'll dequeue this and send it. 13316 */ 13317int 13318ctl_queue_sense(union ctl_io *io) 13319{ 13320 struct ctl_lun *lun; 13321 struct ctl_softc *ctl_softc; 13322 uint32_t initidx, targ_lun; 13323 13324 ctl_softc = control_softc; 13325 13326 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13327 13328 /* 13329 * LUN lookup will likely move to the ctl_work_thread() once we 13330 * have our new queueing infrastructure (that doesn't put things on 13331 * a per-LUN queue initially). That is so that we can handle 13332 * things like an INQUIRY to a LUN that we don't have enabled. We 13333 * can't deal with that right now. 13334 */ 13335 mtx_lock(&ctl_softc->ctl_lock); 13336 13337 /* 13338 * If we don't have a LUN for this, just toss the sense 13339 * information. 13340 */ 13341 targ_lun = io->io_hdr.nexus.targ_lun; 13342 if (io->io_hdr.nexus.lun_map_fn != NULL) 13343 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 13344 if ((targ_lun < CTL_MAX_LUNS) 13345 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13346 lun = ctl_softc->ctl_luns[targ_lun]; 13347 else 13348 goto bailout; 13349 13350 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13351 13352 /* 13353 * Already have CA set for this LUN...toss the sense information. 13354 */ 13355 if (ctl_is_set(lun->have_ca, initidx)) 13356 goto bailout; 13357 13358 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13359 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13360 sizeof(io->scsiio.sense_data))); 13361 ctl_set_mask(lun->have_ca, initidx); 13362 13363bailout: 13364 mtx_unlock(&ctl_softc->ctl_lock); 13365 13366 ctl_free_io(io); 13367 13368 return (CTL_RETVAL_COMPLETE); 13369} 13370 13371/* 13372 * Primary command inlet from frontend ports. All SCSI and task I/O 13373 * requests must go through this function. 13374 */ 13375int 13376ctl_queue(union ctl_io *io) 13377{ 13378 struct ctl_softc *ctl_softc; 13379 13380 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13381 13382 ctl_softc = control_softc; 13383 13384#ifdef CTL_TIME_IO 13385 io->io_hdr.start_time = time_uptime; 13386 getbintime(&io->io_hdr.start_bt); 13387#endif /* CTL_TIME_IO */ 13388 13389 mtx_lock(&ctl_softc->ctl_lock); 13390 13391 switch (io->io_hdr.io_type) { 13392 case CTL_IO_SCSI: 13393 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 13394 links); 13395 break; 13396 case CTL_IO_TASK: 13397 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 13398 /* 13399 * Set the task pending flag. This is necessary to close a 13400 * race condition with the FETD: 13401 * 13402 * - FETD submits a task management command, like an abort. 13403 * - Back end calls fe_datamove() to move the data for the 13404 * aborted command. The FETD can't really accept it, but 13405 * if it did, it would end up transmitting data for a 13406 * command that the initiator told us to abort. 13407 * 13408 * We close the race condition by setting the flag here, 13409 * and checking it in ctl_datamove(), before calling the 13410 * FETD's fe_datamove routine. If we've got a task 13411 * pending, we run the task queue and then check to see 13412 * whether our particular I/O has been aborted. 13413 */ 13414 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 13415 break; 13416 default: 13417 mtx_unlock(&ctl_softc->ctl_lock); 13418 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13419 return (-EINVAL); 13420 break; /* NOTREACHED */ 13421 } 13422 mtx_unlock(&ctl_softc->ctl_lock); 13423 13424 ctl_wakeup_thread(); 13425 13426 return (CTL_RETVAL_COMPLETE); 13427} 13428 13429#ifdef CTL_IO_DELAY 13430static void 13431ctl_done_timer_wakeup(void *arg) 13432{ 13433 union ctl_io *io; 13434 13435 io = (union ctl_io *)arg; 13436 ctl_done_lock(io, /*have_lock*/ 0); 13437} 13438#endif /* CTL_IO_DELAY */ 13439 13440void 13441ctl_done_lock(union ctl_io *io, int have_lock) 13442{ 13443 struct ctl_softc *ctl_softc; 13444#ifndef CTL_DONE_THREAD 13445 union ctl_io *xio; 13446#endif /* !CTL_DONE_THREAD */ 13447 13448 ctl_softc = control_softc; 13449 13450 if (have_lock == 0) 13451 mtx_lock(&ctl_softc->ctl_lock); 13452 13453 /* 13454 * Enable this to catch duplicate completion issues. 13455 */ 13456#if 0 13457 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13458 printf("%s: type %d msg %d cdb %x iptl: " 13459 "%d:%d:%d:%d tag 0x%04x " 13460 "flag %#x status %x\n", 13461 __func__, 13462 io->io_hdr.io_type, 13463 io->io_hdr.msg_type, 13464 io->scsiio.cdb[0], 13465 io->io_hdr.nexus.initid.id, 13466 io->io_hdr.nexus.targ_port, 13467 io->io_hdr.nexus.targ_target.id, 13468 io->io_hdr.nexus.targ_lun, 13469 (io->io_hdr.io_type == 13470 CTL_IO_TASK) ? 13471 io->taskio.tag_num : 13472 io->scsiio.tag_num, 13473 io->io_hdr.flags, 13474 io->io_hdr.status); 13475 } else 13476 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13477#endif 13478 13479 /* 13480 * This is an internal copy of an I/O, and should not go through 13481 * the normal done processing logic. 13482 */ 13483 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 13484 if (have_lock == 0) 13485 mtx_unlock(&ctl_softc->ctl_lock); 13486 return; 13487 } 13488 13489 /* 13490 * We need to send a msg to the serializing shelf to finish the IO 13491 * as well. We don't send a finish message to the other shelf if 13492 * this is a task management command. Task management commands 13493 * aren't serialized in the OOA queue, but rather just executed on 13494 * both shelf controllers for commands that originated on that 13495 * controller. 13496 */ 13497 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13498 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13499 union ctl_ha_msg msg_io; 13500 13501 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13502 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13503 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13504 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13505 } 13506 /* continue on to finish IO */ 13507 } 13508#ifdef CTL_IO_DELAY 13509 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13510 struct ctl_lun *lun; 13511 13512 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13513 13514 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13515 } else { 13516 struct ctl_lun *lun; 13517 13518 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13519 13520 if ((lun != NULL) 13521 && (lun->delay_info.done_delay > 0)) { 13522 struct callout *callout; 13523 13524 callout = (struct callout *)&io->io_hdr.timer_bytes; 13525 callout_init(callout, /*mpsafe*/ 1); 13526 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13527 callout_reset(callout, 13528 lun->delay_info.done_delay * hz, 13529 ctl_done_timer_wakeup, io); 13530 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13531 lun->delay_info.done_delay = 0; 13532 if (have_lock == 0) 13533 mtx_unlock(&ctl_softc->ctl_lock); 13534 return; 13535 } 13536 } 13537#endif /* CTL_IO_DELAY */ 13538 13539 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 13540 13541#ifdef CTL_DONE_THREAD 13542 if (have_lock == 0) 13543 mtx_unlock(&ctl_softc->ctl_lock); 13544 13545 ctl_wakeup_thread(); 13546#else /* CTL_DONE_THREAD */ 13547 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 13548 xio != NULL; 13549 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 13550 13551 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 13552 13553 ctl_process_done(xio, /*have_lock*/ 1); 13554 } 13555 if (have_lock == 0) 13556 mtx_unlock(&ctl_softc->ctl_lock); 13557#endif /* CTL_DONE_THREAD */ 13558} 13559 13560void 13561ctl_done(union ctl_io *io) 13562{ 13563 ctl_done_lock(io, /*have_lock*/ 0); 13564} 13565 13566int 13567ctl_isc(struct ctl_scsiio *ctsio) 13568{ 13569 struct ctl_lun *lun; 13570 int retval; 13571 13572 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13573 13574 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13575 13576 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13577 13578 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13579 13580 return (retval); 13581} 13582 13583 13584static void 13585ctl_work_thread(void *arg) 13586{ 13587 struct ctl_softc *softc; 13588 union ctl_io *io; 13589 struct ctl_be_lun *be_lun; 13590 int retval; 13591 13592 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13593 13594 softc = (struct ctl_softc *)arg; 13595 if (softc == NULL) 13596 return; 13597 13598 mtx_lock(&softc->ctl_lock); 13599 for (;;) { 13600 retval = 0; 13601 13602 /* 13603 * We handle the queues in this order: 13604 * - task management 13605 * - ISC 13606 * - done queue (to free up resources, unblock other commands) 13607 * - RtR queue 13608 * - incoming queue 13609 * 13610 * If those queues are empty, we break out of the loop and 13611 * go to sleep. 13612 */ 13613 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 13614 if (io != NULL) { 13615 ctl_run_task_queue(softc); 13616 continue; 13617 } 13618 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 13619 if (io != NULL) { 13620 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 13621 ctl_handle_isc(io); 13622 continue; 13623 } 13624 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 13625 if (io != NULL) { 13626 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 13627 /* clear any blocked commands, call fe_done */ 13628 mtx_unlock(&softc->ctl_lock); 13629 /* 13630 * XXX KDM 13631 * Call this without a lock for now. This will 13632 * depend on whether there is any way the FETD can 13633 * sleep or deadlock if called with the CTL lock 13634 * held. 13635 */ 13636 retval = ctl_process_done(io, /*have_lock*/ 0); 13637 mtx_lock(&softc->ctl_lock); 13638 continue; 13639 } 13640 if (!ctl_pause_rtr) { 13641 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 13642 if (io != NULL) { 13643 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 13644 mtx_unlock(&softc->ctl_lock); 13645 retval = ctl_scsiio(&io->scsiio); 13646 if (retval != CTL_RETVAL_COMPLETE) 13647 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13648 mtx_lock(&softc->ctl_lock); 13649 continue; 13650 } 13651 } 13652 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 13653 if (io != NULL) { 13654 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 13655 mtx_unlock(&softc->ctl_lock); 13656 ctl_scsiio_precheck(softc, &io->scsiio); 13657 mtx_lock(&softc->ctl_lock); 13658 continue; 13659 } 13660 /* 13661 * We might want to move this to a separate thread, so that 13662 * configuration requests (in this case LUN creations) 13663 * won't impact the I/O path. 13664 */ 13665 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13666 if (be_lun != NULL) { 13667 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13668 mtx_unlock(&softc->ctl_lock); 13669 ctl_create_lun(be_lun); 13670 mtx_lock(&softc->ctl_lock); 13671 continue; 13672 } 13673 13674 /* XXX KDM use the PDROP flag?? */ 13675 /* Sleep until we have something to do. */ 13676 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "-", 0); 13677 13678 /* Back to the top of the loop to see what woke us up. */ 13679 continue; 13680 } 13681} 13682 13683void 13684ctl_wakeup_thread() 13685{ 13686 struct ctl_softc *softc; 13687 13688 softc = control_softc; 13689 13690 wakeup_one(softc); 13691} 13692 13693/* Initialization and failover */ 13694 13695void 13696ctl_init_isc_msg(void) 13697{ 13698 printf("CTL: Still calling this thing\n"); 13699} 13700 13701/* 13702 * Init component 13703 * Initializes component into configuration defined by bootMode 13704 * (see hasc-sv.c) 13705 * returns hasc_Status: 13706 * OK 13707 * ERROR - fatal error 13708 */ 13709static ctl_ha_comp_status 13710ctl_isc_init(struct ctl_ha_component *c) 13711{ 13712 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13713 13714 c->status = ret; 13715 return ret; 13716} 13717 13718/* Start component 13719 * Starts component in state requested. If component starts successfully, 13720 * it must set its own state to the requestrd state 13721 * When requested state is HASC_STATE_HA, the component may refine it 13722 * by adding _SLAVE or _MASTER flags. 13723 * Currently allowed state transitions are: 13724 * UNKNOWN->HA - initial startup 13725 * UNKNOWN->SINGLE - initial startup when no parter detected 13726 * HA->SINGLE - failover 13727 * returns ctl_ha_comp_status: 13728 * OK - component successfully started in requested state 13729 * FAILED - could not start the requested state, failover may 13730 * be possible 13731 * ERROR - fatal error detected, no future startup possible 13732 */ 13733static ctl_ha_comp_status 13734ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13735{ 13736 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13737 13738 printf("%s: go\n", __func__); 13739 13740 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13741 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13742 ctl_is_single = 0; 13743 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13744 != CTL_HA_STATUS_SUCCESS) { 13745 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13746 ret = CTL_HA_COMP_STATUS_ERROR; 13747 } 13748 } else if (CTL_HA_STATE_IS_HA(c->state) 13749 && CTL_HA_STATE_IS_SINGLE(state)){ 13750 // HA->SINGLE transition 13751 ctl_failover(); 13752 ctl_is_single = 1; 13753 } else { 13754 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13755 c->state, state); 13756 ret = CTL_HA_COMP_STATUS_ERROR; 13757 } 13758 if (CTL_HA_STATE_IS_SINGLE(state)) 13759 ctl_is_single = 1; 13760 13761 c->state = state; 13762 c->status = ret; 13763 return ret; 13764} 13765 13766/* 13767 * Quiesce component 13768 * The component must clear any error conditions (set status to OK) and 13769 * prepare itself to another Start call 13770 * returns ctl_ha_comp_status: 13771 * OK 13772 * ERROR 13773 */ 13774static ctl_ha_comp_status 13775ctl_isc_quiesce(struct ctl_ha_component *c) 13776{ 13777 int ret = CTL_HA_COMP_STATUS_OK; 13778 13779 ctl_pause_rtr = 1; 13780 c->status = ret; 13781 return ret; 13782} 13783 13784struct ctl_ha_component ctl_ha_component_ctlisc = 13785{ 13786 .name = "CTL ISC", 13787 .state = CTL_HA_STATE_UNKNOWN, 13788 .init = ctl_isc_init, 13789 .start = ctl_isc_start, 13790 .quiesce = ctl_isc_quiesce 13791}; 13792 13793/* 13794 * vim: ts=8 13795 */ 13796