ctl.c revision 268551
1/*- 2 * Copyright (c) 2003-2009 Silicon Graphics International Corp. 3 * Copyright (c) 2012 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * Portions of this software were developed by Edward Tomasz Napierala 7 * under sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification. 15 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 16 * substantially similar to the "NO WARRANTY" disclaimer below 17 * ("Disclaimer") and any redistribution must be conditioned upon 18 * including a substantially similar Disclaimer requirement for further 19 * binary redistribution. 20 * 21 * NO WARRANTY 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 31 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGES. 33 * 34 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl.c#8 $ 35 */ 36/* 37 * CAM Target Layer, a SCSI device emulation subsystem. 38 * 39 * Author: Ken Merry <ken@FreeBSD.org> 40 */ 41 42#define _CTL_C 43 44#include <sys/cdefs.h> 45__FBSDID("$FreeBSD: stable/10/sys/cam/ctl/ctl.c 268551 2014-07-12 02:26:11Z 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 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 4958 free(io->scsiio.kern_data_ptr, M_CTL); 4959 ctl_done(io); 4960 goto bailout; 4961 } 4962 4963 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4964 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4965 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4966 /* 4967 * XXX KDM just assuming a single pointer here, and not a 4968 * S/G list. If we start using S/G lists for config data, 4969 * we'll need to know how to clean them up here as well. 4970 */ 4971 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 4972 free(io->scsiio.kern_data_ptr, M_CTL); 4973 /* Hopefully the user has already set the status... */ 4974 ctl_done(io); 4975 } else { 4976 /* 4977 * XXX KDM now we need to continue data movement. Some 4978 * options: 4979 * - call ctl_scsiio() again? We don't do this for data 4980 * writes, because for those at least we know ahead of 4981 * time where the write will go and how long it is. For 4982 * config writes, though, that information is largely 4983 * contained within the write itself, thus we need to 4984 * parse out the data again. 4985 * 4986 * - Call some other function once the data is in? 4987 */ 4988 4989 /* 4990 * XXX KDM call ctl_scsiio() again for now, and check flag 4991 * bits to see whether we're allocated or not. 4992 */ 4993 retval = ctl_scsiio(&io->scsiio); 4994 } 4995bailout: 4996 return (retval); 4997} 4998 4999/* 5000 * This gets called by a backend driver when it is done with a 5001 * data_submit method. 5002 */ 5003void 5004ctl_data_submit_done(union ctl_io *io) 5005{ 5006 /* 5007 * If the IO_CONT flag is set, we need to call the supplied 5008 * function to continue processing the I/O, instead of completing 5009 * the I/O just yet. 5010 * 5011 * If there is an error, though, we don't want to keep processing. 5012 * Instead, just send status back to the initiator. 5013 */ 5014 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) && 5015 (io->io_hdr.flags & CTL_FLAG_ABORT) == 0 && 5016 ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 5017 (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 5018 io->scsiio.io_cont(io); 5019 return; 5020 } 5021 ctl_done(io); 5022} 5023 5024/* 5025 * This gets called by a backend driver when it is done with a 5026 * configuration write. 5027 */ 5028void 5029ctl_config_write_done(union ctl_io *io) 5030{ 5031 /* 5032 * If the IO_CONT flag is set, we need to call the supplied 5033 * function to continue processing the I/O, instead of completing 5034 * the I/O just yet. 5035 * 5036 * If there is an error, though, we don't want to keep processing. 5037 * Instead, just send status back to the initiator. 5038 */ 5039 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5040 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5041 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5042 io->scsiio.io_cont(io); 5043 return; 5044 } 5045 /* 5046 * Since a configuration write can be done for commands that actually 5047 * have data allocated, like write buffer, and commands that have 5048 * no data, like start/stop unit, we need to check here. 5049 */ 5050 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5051 free(io->scsiio.kern_data_ptr, M_CTL); 5052 ctl_done(io); 5053} 5054 5055/* 5056 * SCSI release command. 5057 */ 5058int 5059ctl_scsi_release(struct ctl_scsiio *ctsio) 5060{ 5061 int length, longid, thirdparty_id, resv_id; 5062 struct ctl_softc *ctl_softc; 5063 struct ctl_lun *lun; 5064 5065 length = 0; 5066 resv_id = 0; 5067 5068 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5069 5070 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5071 ctl_softc = control_softc; 5072 5073 switch (ctsio->cdb[0]) { 5074 case RELEASE: { 5075 struct scsi_release *cdb; 5076 5077 cdb = (struct scsi_release *)ctsio->cdb; 5078 if ((cdb->byte2 & 0x1f) != 0) { 5079 ctl_set_invalid_field(ctsio, 5080 /*sks_valid*/ 1, 5081 /*command*/ 1, 5082 /*field*/ 1, 5083 /*bit_valid*/ 0, 5084 /*bit*/ 0); 5085 ctl_done((union ctl_io *)ctsio); 5086 return (CTL_RETVAL_COMPLETE); 5087 } 5088 break; 5089 } 5090 case RELEASE_10: { 5091 struct scsi_release_10 *cdb; 5092 5093 cdb = (struct scsi_release_10 *)ctsio->cdb; 5094 5095 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5096 ctl_set_invalid_field(ctsio, 5097 /*sks_valid*/ 1, 5098 /*command*/ 1, 5099 /*field*/ 1, 5100 /*bit_valid*/ 1, 5101 /*bit*/ 0); 5102 ctl_done((union ctl_io *)ctsio); 5103 return (CTL_RETVAL_COMPLETE); 5104 5105 } 5106 5107 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5108 ctl_set_invalid_field(ctsio, 5109 /*sks_valid*/ 1, 5110 /*command*/ 1, 5111 /*field*/ 1, 5112 /*bit_valid*/ 1, 5113 /*bit*/ 4); 5114 ctl_done((union ctl_io *)ctsio); 5115 return (CTL_RETVAL_COMPLETE); 5116 } 5117 5118 if (cdb->byte2 & SR10_LONGID) 5119 longid = 1; 5120 else 5121 thirdparty_id = cdb->thirdparty_id; 5122 5123 resv_id = cdb->resv_id; 5124 length = scsi_2btoul(cdb->length); 5125 break; 5126 } 5127 } 5128 5129 5130 /* 5131 * XXX KDM right now, we only support LUN reservation. We don't 5132 * support 3rd party reservations, or extent reservations, which 5133 * might actually need the parameter list. If we've gotten this 5134 * far, we've got a LUN reservation. Anything else got kicked out 5135 * above. So, according to SPC, ignore the length. 5136 */ 5137 length = 0; 5138 5139 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5140 && (length > 0)) { 5141 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5142 ctsio->kern_data_len = length; 5143 ctsio->kern_total_len = length; 5144 ctsio->kern_data_resid = 0; 5145 ctsio->kern_rel_offset = 0; 5146 ctsio->kern_sg_entries = 0; 5147 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5148 ctsio->be_move_done = ctl_config_move_done; 5149 ctl_datamove((union ctl_io *)ctsio); 5150 5151 return (CTL_RETVAL_COMPLETE); 5152 } 5153 5154 if (length > 0) 5155 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5156 5157 mtx_lock(&ctl_softc->ctl_lock); 5158 5159 /* 5160 * According to SPC, it is not an error for an intiator to attempt 5161 * to release a reservation on a LUN that isn't reserved, or that 5162 * is reserved by another initiator. The reservation can only be 5163 * released, though, by the initiator who made it or by one of 5164 * several reset type events. 5165 */ 5166 if (lun->flags & CTL_LUN_RESERVED) { 5167 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5168 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5169 && (ctsio->io_hdr.nexus.targ_target.id == 5170 lun->rsv_nexus.targ_target.id)) { 5171 lun->flags &= ~CTL_LUN_RESERVED; 5172 } 5173 } 5174 5175 ctsio->scsi_status = SCSI_STATUS_OK; 5176 ctsio->io_hdr.status = CTL_SUCCESS; 5177 5178 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5179 free(ctsio->kern_data_ptr, M_CTL); 5180 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5181 } 5182 5183 mtx_unlock(&ctl_softc->ctl_lock); 5184 5185 ctl_done((union ctl_io *)ctsio); 5186 return (CTL_RETVAL_COMPLETE); 5187} 5188 5189int 5190ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5191{ 5192 int extent, thirdparty, longid; 5193 int resv_id, length; 5194 uint64_t thirdparty_id; 5195 struct ctl_softc *ctl_softc; 5196 struct ctl_lun *lun; 5197 5198 extent = 0; 5199 thirdparty = 0; 5200 longid = 0; 5201 resv_id = 0; 5202 length = 0; 5203 thirdparty_id = 0; 5204 5205 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5206 5207 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5208 ctl_softc = control_softc; 5209 5210 switch (ctsio->cdb[0]) { 5211 case RESERVE: { 5212 struct scsi_reserve *cdb; 5213 5214 cdb = (struct scsi_reserve *)ctsio->cdb; 5215 if ((cdb->byte2 & 0x1f) != 0) { 5216 ctl_set_invalid_field(ctsio, 5217 /*sks_valid*/ 1, 5218 /*command*/ 1, 5219 /*field*/ 1, 5220 /*bit_valid*/ 0, 5221 /*bit*/ 0); 5222 ctl_done((union ctl_io *)ctsio); 5223 return (CTL_RETVAL_COMPLETE); 5224 } 5225 resv_id = cdb->resv_id; 5226 length = scsi_2btoul(cdb->length); 5227 break; 5228 } 5229 case RESERVE_10: { 5230 struct scsi_reserve_10 *cdb; 5231 5232 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5233 5234 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5235 ctl_set_invalid_field(ctsio, 5236 /*sks_valid*/ 1, 5237 /*command*/ 1, 5238 /*field*/ 1, 5239 /*bit_valid*/ 1, 5240 /*bit*/ 0); 5241 ctl_done((union ctl_io *)ctsio); 5242 return (CTL_RETVAL_COMPLETE); 5243 } 5244 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5245 ctl_set_invalid_field(ctsio, 5246 /*sks_valid*/ 1, 5247 /*command*/ 1, 5248 /*field*/ 1, 5249 /*bit_valid*/ 1, 5250 /*bit*/ 4); 5251 ctl_done((union ctl_io *)ctsio); 5252 return (CTL_RETVAL_COMPLETE); 5253 } 5254 if (cdb->byte2 & SR10_LONGID) 5255 longid = 1; 5256 else 5257 thirdparty_id = cdb->thirdparty_id; 5258 5259 resv_id = cdb->resv_id; 5260 length = scsi_2btoul(cdb->length); 5261 break; 5262 } 5263 } 5264 5265 /* 5266 * XXX KDM right now, we only support LUN reservation. We don't 5267 * support 3rd party reservations, or extent reservations, which 5268 * might actually need the parameter list. If we've gotten this 5269 * far, we've got a LUN reservation. Anything else got kicked out 5270 * above. So, according to SPC, ignore the length. 5271 */ 5272 length = 0; 5273 5274 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5275 && (length > 0)) { 5276 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5277 ctsio->kern_data_len = length; 5278 ctsio->kern_total_len = length; 5279 ctsio->kern_data_resid = 0; 5280 ctsio->kern_rel_offset = 0; 5281 ctsio->kern_sg_entries = 0; 5282 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5283 ctsio->be_move_done = ctl_config_move_done; 5284 ctl_datamove((union ctl_io *)ctsio); 5285 5286 return (CTL_RETVAL_COMPLETE); 5287 } 5288 5289 if (length > 0) 5290 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5291 5292 mtx_lock(&ctl_softc->ctl_lock); 5293 if (lun->flags & CTL_LUN_RESERVED) { 5294 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5295 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5296 || (ctsio->io_hdr.nexus.targ_target.id != 5297 lun->rsv_nexus.targ_target.id)) { 5298 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5299 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5300 goto bailout; 5301 } 5302 } 5303 5304 lun->flags |= CTL_LUN_RESERVED; 5305 lun->rsv_nexus = ctsio->io_hdr.nexus; 5306 5307 ctsio->scsi_status = SCSI_STATUS_OK; 5308 ctsio->io_hdr.status = CTL_SUCCESS; 5309 5310bailout: 5311 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5312 free(ctsio->kern_data_ptr, M_CTL); 5313 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5314 } 5315 5316 mtx_unlock(&ctl_softc->ctl_lock); 5317 5318 ctl_done((union ctl_io *)ctsio); 5319 return (CTL_RETVAL_COMPLETE); 5320} 5321 5322int 5323ctl_start_stop(struct ctl_scsiio *ctsio) 5324{ 5325 struct scsi_start_stop_unit *cdb; 5326 struct ctl_lun *lun; 5327 struct ctl_softc *ctl_softc; 5328 int retval; 5329 5330 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5331 5332 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5333 ctl_softc = control_softc; 5334 retval = 0; 5335 5336 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5337 5338 /* 5339 * XXX KDM 5340 * We don't support the immediate bit on a stop unit. In order to 5341 * do that, we would need to code up a way to know that a stop is 5342 * pending, and hold off any new commands until it completes, one 5343 * way or another. Then we could accept or reject those commands 5344 * depending on its status. We would almost need to do the reverse 5345 * of what we do below for an immediate start -- return the copy of 5346 * the ctl_io to the FETD with status to send to the host (and to 5347 * free the copy!) and then free the original I/O once the stop 5348 * actually completes. That way, the OOA queue mechanism can work 5349 * to block commands that shouldn't proceed. Another alternative 5350 * would be to put the copy in the queue in place of the original, 5351 * and return the original back to the caller. That could be 5352 * slightly safer.. 5353 */ 5354 if ((cdb->byte2 & SSS_IMMED) 5355 && ((cdb->how & SSS_START) == 0)) { 5356 ctl_set_invalid_field(ctsio, 5357 /*sks_valid*/ 1, 5358 /*command*/ 1, 5359 /*field*/ 1, 5360 /*bit_valid*/ 1, 5361 /*bit*/ 0); 5362 ctl_done((union ctl_io *)ctsio); 5363 return (CTL_RETVAL_COMPLETE); 5364 } 5365 5366 /* 5367 * We don't support the power conditions field. We need to check 5368 * this prior to checking the load/eject and start/stop bits. 5369 */ 5370 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5371 ctl_set_invalid_field(ctsio, 5372 /*sks_valid*/ 1, 5373 /*command*/ 1, 5374 /*field*/ 4, 5375 /*bit_valid*/ 1, 5376 /*bit*/ 4); 5377 ctl_done((union ctl_io *)ctsio); 5378 return (CTL_RETVAL_COMPLETE); 5379 } 5380 5381 /* 5382 * Media isn't removable, so we can't load or eject it. 5383 */ 5384 if ((cdb->how & SSS_LOEJ) != 0) { 5385 ctl_set_invalid_field(ctsio, 5386 /*sks_valid*/ 1, 5387 /*command*/ 1, 5388 /*field*/ 4, 5389 /*bit_valid*/ 1, 5390 /*bit*/ 1); 5391 ctl_done((union ctl_io *)ctsio); 5392 return (CTL_RETVAL_COMPLETE); 5393 } 5394 5395 if ((lun->flags & CTL_LUN_PR_RESERVED) 5396 && ((cdb->how & SSS_START)==0)) { 5397 uint32_t residx; 5398 5399 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5400 if (!lun->per_res[residx].registered 5401 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5402 5403 ctl_set_reservation_conflict(ctsio); 5404 ctl_done((union ctl_io *)ctsio); 5405 return (CTL_RETVAL_COMPLETE); 5406 } 5407 } 5408 5409 /* 5410 * If there is no backend on this device, we can't start or stop 5411 * it. In theory we shouldn't get any start/stop commands in the 5412 * first place at this level if the LUN doesn't have a backend. 5413 * That should get stopped by the command decode code. 5414 */ 5415 if (lun->backend == NULL) { 5416 ctl_set_invalid_opcode(ctsio); 5417 ctl_done((union ctl_io *)ctsio); 5418 return (CTL_RETVAL_COMPLETE); 5419 } 5420 5421 /* 5422 * XXX KDM Copan-specific offline behavior. 5423 * Figure out a reasonable way to port this? 5424 */ 5425#ifdef NEEDTOPORT 5426 mtx_lock(&ctl_softc->ctl_lock); 5427 5428 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5429 && (lun->flags & CTL_LUN_OFFLINE)) { 5430 /* 5431 * If the LUN is offline, and the on/offline bit isn't set, 5432 * reject the start or stop. Otherwise, let it through. 5433 */ 5434 mtx_unlock(&ctl_softc->ctl_lock); 5435 ctl_set_lun_not_ready(ctsio); 5436 ctl_done((union ctl_io *)ctsio); 5437 } else { 5438 mtx_unlock(&ctl_softc->ctl_lock); 5439#endif /* NEEDTOPORT */ 5440 /* 5441 * This could be a start or a stop when we're online, 5442 * or a stop/offline or start/online. A start or stop when 5443 * we're offline is covered in the case above. 5444 */ 5445 /* 5446 * In the non-immediate case, we send the request to 5447 * the backend and return status to the user when 5448 * it is done. 5449 * 5450 * In the immediate case, we allocate a new ctl_io 5451 * to hold a copy of the request, and send that to 5452 * the backend. We then set good status on the 5453 * user's request and return it immediately. 5454 */ 5455 if (cdb->byte2 & SSS_IMMED) { 5456 union ctl_io *new_io; 5457 5458 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5459 if (new_io == NULL) { 5460 ctl_set_busy(ctsio); 5461 ctl_done((union ctl_io *)ctsio); 5462 } else { 5463 ctl_copy_io((union ctl_io *)ctsio, 5464 new_io); 5465 retval = lun->backend->config_write(new_io); 5466 ctl_set_success(ctsio); 5467 ctl_done((union ctl_io *)ctsio); 5468 } 5469 } else { 5470 retval = lun->backend->config_write( 5471 (union ctl_io *)ctsio); 5472 } 5473#ifdef NEEDTOPORT 5474 } 5475#endif 5476 return (retval); 5477} 5478 5479/* 5480 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5481 * we don't really do anything with the LBA and length fields if the user 5482 * passes them in. Instead we'll just flush out the cache for the entire 5483 * LUN. 5484 */ 5485int 5486ctl_sync_cache(struct ctl_scsiio *ctsio) 5487{ 5488 struct ctl_lun *lun; 5489 struct ctl_softc *ctl_softc; 5490 uint64_t starting_lba; 5491 uint32_t block_count; 5492 int reladr, immed; 5493 int retval; 5494 5495 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5496 5497 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5498 ctl_softc = control_softc; 5499 retval = 0; 5500 reladr = 0; 5501 immed = 0; 5502 5503 switch (ctsio->cdb[0]) { 5504 case SYNCHRONIZE_CACHE: { 5505 struct scsi_sync_cache *cdb; 5506 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5507 5508 if (cdb->byte2 & SSC_RELADR) 5509 reladr = 1; 5510 5511 if (cdb->byte2 & SSC_IMMED) 5512 immed = 1; 5513 5514 starting_lba = scsi_4btoul(cdb->begin_lba); 5515 block_count = scsi_2btoul(cdb->lb_count); 5516 break; 5517 } 5518 case SYNCHRONIZE_CACHE_16: { 5519 struct scsi_sync_cache_16 *cdb; 5520 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5521 5522 if (cdb->byte2 & SSC_RELADR) 5523 reladr = 1; 5524 5525 if (cdb->byte2 & SSC_IMMED) 5526 immed = 1; 5527 5528 starting_lba = scsi_8btou64(cdb->begin_lba); 5529 block_count = scsi_4btoul(cdb->lb_count); 5530 break; 5531 } 5532 default: 5533 ctl_set_invalid_opcode(ctsio); 5534 ctl_done((union ctl_io *)ctsio); 5535 goto bailout; 5536 break; /* NOTREACHED */ 5537 } 5538 5539 if (immed) { 5540 /* 5541 * We don't support the immediate bit. Since it's in the 5542 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5543 * commands, we can just return the same error in either 5544 * case. 5545 */ 5546 ctl_set_invalid_field(ctsio, 5547 /*sks_valid*/ 1, 5548 /*command*/ 1, 5549 /*field*/ 1, 5550 /*bit_valid*/ 1, 5551 /*bit*/ 1); 5552 ctl_done((union ctl_io *)ctsio); 5553 goto bailout; 5554 } 5555 5556 if (reladr) { 5557 /* 5558 * We don't support the reladr bit either. It can only be 5559 * used with linked commands, and we don't support linked 5560 * commands. Since the bit is in the same place for the 5561 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5562 * just return the same error in either case. 5563 */ 5564 ctl_set_invalid_field(ctsio, 5565 /*sks_valid*/ 1, 5566 /*command*/ 1, 5567 /*field*/ 1, 5568 /*bit_valid*/ 1, 5569 /*bit*/ 0); 5570 ctl_done((union ctl_io *)ctsio); 5571 goto bailout; 5572 } 5573 5574 /* 5575 * We check the LBA and length, but don't do anything with them. 5576 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5577 * get flushed. This check will just help satisfy anyone who wants 5578 * to see an error for an out of range LBA. 5579 */ 5580 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5581 ctl_set_lba_out_of_range(ctsio); 5582 ctl_done((union ctl_io *)ctsio); 5583 goto bailout; 5584 } 5585 5586 /* 5587 * If this LUN has no backend, we can't flush the cache anyway. 5588 */ 5589 if (lun->backend == NULL) { 5590 ctl_set_invalid_opcode(ctsio); 5591 ctl_done((union ctl_io *)ctsio); 5592 goto bailout; 5593 } 5594 5595 /* 5596 * Check to see whether we're configured to send the SYNCHRONIZE 5597 * CACHE command directly to the back end. 5598 */ 5599 mtx_lock(&ctl_softc->ctl_lock); 5600 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5601 && (++(lun->sync_count) >= lun->sync_interval)) { 5602 lun->sync_count = 0; 5603 mtx_unlock(&ctl_softc->ctl_lock); 5604 retval = lun->backend->config_write((union ctl_io *)ctsio); 5605 } else { 5606 mtx_unlock(&ctl_softc->ctl_lock); 5607 ctl_set_success(ctsio); 5608 ctl_done((union ctl_io *)ctsio); 5609 } 5610 5611bailout: 5612 5613 return (retval); 5614} 5615 5616int 5617ctl_format(struct ctl_scsiio *ctsio) 5618{ 5619 struct scsi_format *cdb; 5620 struct ctl_lun *lun; 5621 struct ctl_softc *ctl_softc; 5622 int length, defect_list_len; 5623 5624 CTL_DEBUG_PRINT(("ctl_format\n")); 5625 5626 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5627 ctl_softc = control_softc; 5628 5629 cdb = (struct scsi_format *)ctsio->cdb; 5630 5631 length = 0; 5632 if (cdb->byte2 & SF_FMTDATA) { 5633 if (cdb->byte2 & SF_LONGLIST) 5634 length = sizeof(struct scsi_format_header_long); 5635 else 5636 length = sizeof(struct scsi_format_header_short); 5637 } 5638 5639 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5640 && (length > 0)) { 5641 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5642 ctsio->kern_data_len = length; 5643 ctsio->kern_total_len = length; 5644 ctsio->kern_data_resid = 0; 5645 ctsio->kern_rel_offset = 0; 5646 ctsio->kern_sg_entries = 0; 5647 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5648 ctsio->be_move_done = ctl_config_move_done; 5649 ctl_datamove((union ctl_io *)ctsio); 5650 5651 return (CTL_RETVAL_COMPLETE); 5652 } 5653 5654 defect_list_len = 0; 5655 5656 if (cdb->byte2 & SF_FMTDATA) { 5657 if (cdb->byte2 & SF_LONGLIST) { 5658 struct scsi_format_header_long *header; 5659 5660 header = (struct scsi_format_header_long *) 5661 ctsio->kern_data_ptr; 5662 5663 defect_list_len = scsi_4btoul(header->defect_list_len); 5664 if (defect_list_len != 0) { 5665 ctl_set_invalid_field(ctsio, 5666 /*sks_valid*/ 1, 5667 /*command*/ 0, 5668 /*field*/ 2, 5669 /*bit_valid*/ 0, 5670 /*bit*/ 0); 5671 goto bailout; 5672 } 5673 } else { 5674 struct scsi_format_header_short *header; 5675 5676 header = (struct scsi_format_header_short *) 5677 ctsio->kern_data_ptr; 5678 5679 defect_list_len = scsi_2btoul(header->defect_list_len); 5680 if (defect_list_len != 0) { 5681 ctl_set_invalid_field(ctsio, 5682 /*sks_valid*/ 1, 5683 /*command*/ 0, 5684 /*field*/ 2, 5685 /*bit_valid*/ 0, 5686 /*bit*/ 0); 5687 goto bailout; 5688 } 5689 } 5690 } 5691 5692 /* 5693 * The format command will clear out the "Medium format corrupted" 5694 * status if set by the configuration code. That status is really 5695 * just a way to notify the host that we have lost the media, and 5696 * get them to issue a command that will basically make them think 5697 * they're blowing away the media. 5698 */ 5699 mtx_lock(&ctl_softc->ctl_lock); 5700 lun->flags &= ~CTL_LUN_INOPERABLE; 5701 mtx_unlock(&ctl_softc->ctl_lock); 5702 5703 ctsio->scsi_status = SCSI_STATUS_OK; 5704 ctsio->io_hdr.status = CTL_SUCCESS; 5705bailout: 5706 5707 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5708 free(ctsio->kern_data_ptr, M_CTL); 5709 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5710 } 5711 5712 ctl_done((union ctl_io *)ctsio); 5713 return (CTL_RETVAL_COMPLETE); 5714} 5715 5716int 5717ctl_read_buffer(struct ctl_scsiio *ctsio) 5718{ 5719 struct scsi_read_buffer *cdb; 5720 struct ctl_lun *lun; 5721 int buffer_offset, len; 5722 static uint8_t descr[4]; 5723 static uint8_t echo_descr[4] = { 0 }; 5724 5725 CTL_DEBUG_PRINT(("ctl_read_buffer\n")); 5726 5727 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5728 cdb = (struct scsi_read_buffer *)ctsio->cdb; 5729 5730 if (lun->flags & CTL_LUN_PR_RESERVED) { 5731 uint32_t residx; 5732 5733 /* 5734 * XXX KDM need a lock here. 5735 */ 5736 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5737 if ((lun->res_type == SPR_TYPE_EX_AC 5738 && residx != lun->pr_res_idx) 5739 || ((lun->res_type == SPR_TYPE_EX_AC_RO 5740 || lun->res_type == SPR_TYPE_EX_AC_AR) 5741 && !lun->per_res[residx].registered)) { 5742 ctl_set_reservation_conflict(ctsio); 5743 ctl_done((union ctl_io *)ctsio); 5744 return (CTL_RETVAL_COMPLETE); 5745 } 5746 } 5747 5748 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA && 5749 (cdb->byte2 & RWB_MODE) != RWB_MODE_ECHO_DESCR && 5750 (cdb->byte2 & RWB_MODE) != RWB_MODE_DESCR) { 5751 ctl_set_invalid_field(ctsio, 5752 /*sks_valid*/ 1, 5753 /*command*/ 1, 5754 /*field*/ 1, 5755 /*bit_valid*/ 1, 5756 /*bit*/ 4); 5757 ctl_done((union ctl_io *)ctsio); 5758 return (CTL_RETVAL_COMPLETE); 5759 } 5760 if (cdb->buffer_id != 0) { 5761 ctl_set_invalid_field(ctsio, 5762 /*sks_valid*/ 1, 5763 /*command*/ 1, 5764 /*field*/ 2, 5765 /*bit_valid*/ 0, 5766 /*bit*/ 0); 5767 ctl_done((union ctl_io *)ctsio); 5768 return (CTL_RETVAL_COMPLETE); 5769 } 5770 5771 len = scsi_3btoul(cdb->length); 5772 buffer_offset = scsi_3btoul(cdb->offset); 5773 5774 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5775 ctl_set_invalid_field(ctsio, 5776 /*sks_valid*/ 1, 5777 /*command*/ 1, 5778 /*field*/ 6, 5779 /*bit_valid*/ 0, 5780 /*bit*/ 0); 5781 ctl_done((union ctl_io *)ctsio); 5782 return (CTL_RETVAL_COMPLETE); 5783 } 5784 5785 if ((cdb->byte2 & RWB_MODE) == RWB_MODE_DESCR) { 5786 descr[0] = 0; 5787 scsi_ulto3b(sizeof(lun->write_buffer), &descr[1]); 5788 ctsio->kern_data_ptr = descr; 5789 len = min(len, sizeof(descr)); 5790 } else if ((cdb->byte2 & RWB_MODE) == RWB_MODE_ECHO_DESCR) { 5791 ctsio->kern_data_ptr = echo_descr; 5792 len = min(len, sizeof(echo_descr)); 5793 } else 5794 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5795 ctsio->kern_data_len = len; 5796 ctsio->kern_total_len = len; 5797 ctsio->kern_data_resid = 0; 5798 ctsio->kern_rel_offset = 0; 5799 ctsio->kern_sg_entries = 0; 5800 ctsio->be_move_done = ctl_config_move_done; 5801 ctl_datamove((union ctl_io *)ctsio); 5802 5803 return (CTL_RETVAL_COMPLETE); 5804} 5805 5806int 5807ctl_write_buffer(struct ctl_scsiio *ctsio) 5808{ 5809 struct scsi_write_buffer *cdb; 5810 struct ctl_lun *lun; 5811 int buffer_offset, len; 5812 5813 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5814 5815 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5816 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5817 5818 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5819 ctl_set_invalid_field(ctsio, 5820 /*sks_valid*/ 1, 5821 /*command*/ 1, 5822 /*field*/ 1, 5823 /*bit_valid*/ 1, 5824 /*bit*/ 4); 5825 ctl_done((union ctl_io *)ctsio); 5826 return (CTL_RETVAL_COMPLETE); 5827 } 5828 if (cdb->buffer_id != 0) { 5829 ctl_set_invalid_field(ctsio, 5830 /*sks_valid*/ 1, 5831 /*command*/ 1, 5832 /*field*/ 2, 5833 /*bit_valid*/ 0, 5834 /*bit*/ 0); 5835 ctl_done((union ctl_io *)ctsio); 5836 return (CTL_RETVAL_COMPLETE); 5837 } 5838 5839 len = scsi_3btoul(cdb->length); 5840 buffer_offset = scsi_3btoul(cdb->offset); 5841 5842 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5843 ctl_set_invalid_field(ctsio, 5844 /*sks_valid*/ 1, 5845 /*command*/ 1, 5846 /*field*/ 6, 5847 /*bit_valid*/ 0, 5848 /*bit*/ 0); 5849 ctl_done((union ctl_io *)ctsio); 5850 return (CTL_RETVAL_COMPLETE); 5851 } 5852 5853 /* 5854 * If we've got a kernel request that hasn't been malloced yet, 5855 * malloc it and tell the caller the data buffer is here. 5856 */ 5857 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5858 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5859 ctsio->kern_data_len = len; 5860 ctsio->kern_total_len = len; 5861 ctsio->kern_data_resid = 0; 5862 ctsio->kern_rel_offset = 0; 5863 ctsio->kern_sg_entries = 0; 5864 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5865 ctsio->be_move_done = ctl_config_move_done; 5866 ctl_datamove((union ctl_io *)ctsio); 5867 5868 return (CTL_RETVAL_COMPLETE); 5869 } 5870 5871 ctl_done((union ctl_io *)ctsio); 5872 5873 return (CTL_RETVAL_COMPLETE); 5874} 5875 5876int 5877ctl_write_same(struct ctl_scsiio *ctsio) 5878{ 5879 struct ctl_lun *lun; 5880 struct ctl_lba_len_flags *lbalen; 5881 uint64_t lba; 5882 uint32_t num_blocks; 5883 int len, retval; 5884 uint8_t byte2; 5885 5886 retval = CTL_RETVAL_COMPLETE; 5887 5888 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5889 5890 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5891 5892 switch (ctsio->cdb[0]) { 5893 case WRITE_SAME_10: { 5894 struct scsi_write_same_10 *cdb; 5895 5896 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5897 5898 lba = scsi_4btoul(cdb->addr); 5899 num_blocks = scsi_2btoul(cdb->length); 5900 byte2 = cdb->byte2; 5901 break; 5902 } 5903 case WRITE_SAME_16: { 5904 struct scsi_write_same_16 *cdb; 5905 5906 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5907 5908 lba = scsi_8btou64(cdb->addr); 5909 num_blocks = scsi_4btoul(cdb->length); 5910 byte2 = cdb->byte2; 5911 break; 5912 } 5913 default: 5914 /* 5915 * We got a command we don't support. This shouldn't 5916 * happen, commands should be filtered out above us. 5917 */ 5918 ctl_set_invalid_opcode(ctsio); 5919 ctl_done((union ctl_io *)ctsio); 5920 5921 return (CTL_RETVAL_COMPLETE); 5922 break; /* NOTREACHED */ 5923 } 5924 5925 /* 5926 * The first check is to make sure we're in bounds, the second 5927 * check is to catch wrap-around problems. If the lba + num blocks 5928 * is less than the lba, then we've wrapped around and the block 5929 * range is invalid anyway. 5930 */ 5931 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5932 || ((lba + num_blocks) < lba)) { 5933 ctl_set_lba_out_of_range(ctsio); 5934 ctl_done((union ctl_io *)ctsio); 5935 return (CTL_RETVAL_COMPLETE); 5936 } 5937 5938 /* Zero number of blocks means "to the last logical block" */ 5939 if (num_blocks == 0) { 5940 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5941 ctl_set_invalid_field(ctsio, 5942 /*sks_valid*/ 0, 5943 /*command*/ 1, 5944 /*field*/ 0, 5945 /*bit_valid*/ 0, 5946 /*bit*/ 0); 5947 ctl_done((union ctl_io *)ctsio); 5948 return (CTL_RETVAL_COMPLETE); 5949 } 5950 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5951 } 5952 5953 len = lun->be_lun->blocksize; 5954 5955 /* 5956 * If we've got a kernel request that hasn't been malloced yet, 5957 * malloc it and tell the caller the data buffer is here. 5958 */ 5959 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5960 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5961 ctsio->kern_data_len = len; 5962 ctsio->kern_total_len = len; 5963 ctsio->kern_data_resid = 0; 5964 ctsio->kern_rel_offset = 0; 5965 ctsio->kern_sg_entries = 0; 5966 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5967 ctsio->be_move_done = ctl_config_move_done; 5968 ctl_datamove((union ctl_io *)ctsio); 5969 5970 return (CTL_RETVAL_COMPLETE); 5971 } 5972 5973 lbalen = (struct ctl_lba_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5974 lbalen->lba = lba; 5975 lbalen->len = num_blocks; 5976 lbalen->flags = byte2; 5977 retval = lun->backend->config_write((union ctl_io *)ctsio); 5978 5979 return (retval); 5980} 5981 5982int 5983ctl_unmap(struct ctl_scsiio *ctsio) 5984{ 5985 struct ctl_lun *lun; 5986 struct scsi_unmap *cdb; 5987 struct ctl_ptr_len_flags *ptrlen; 5988 struct scsi_unmap_header *hdr; 5989 struct scsi_unmap_desc *buf, *end; 5990 uint64_t lba; 5991 uint32_t num_blocks; 5992 int len, retval; 5993 uint8_t byte2; 5994 5995 retval = CTL_RETVAL_COMPLETE; 5996 5997 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5998 5999 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6000 cdb = (struct scsi_unmap *)ctsio->cdb; 6001 6002 len = scsi_2btoul(cdb->length); 6003 byte2 = cdb->byte2; 6004 6005 /* 6006 * If we've got a kernel request that hasn't been malloced yet, 6007 * malloc it and tell the caller the data buffer is here. 6008 */ 6009 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6010 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 6011 ctsio->kern_data_len = len; 6012 ctsio->kern_total_len = len; 6013 ctsio->kern_data_resid = 0; 6014 ctsio->kern_rel_offset = 0; 6015 ctsio->kern_sg_entries = 0; 6016 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6017 ctsio->be_move_done = ctl_config_move_done; 6018 ctl_datamove((union ctl_io *)ctsio); 6019 6020 return (CTL_RETVAL_COMPLETE); 6021 } 6022 6023 len = ctsio->kern_total_len - ctsio->kern_data_resid; 6024 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 6025 if (len < sizeof (*hdr) || 6026 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 6027 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 6028 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 6029 ctl_set_invalid_field(ctsio, 6030 /*sks_valid*/ 0, 6031 /*command*/ 0, 6032 /*field*/ 0, 6033 /*bit_valid*/ 0, 6034 /*bit*/ 0); 6035 ctl_done((union ctl_io *)ctsio); 6036 return (CTL_RETVAL_COMPLETE); 6037 } 6038 len = scsi_2btoul(hdr->desc_length); 6039 buf = (struct scsi_unmap_desc *)(hdr + 1); 6040 end = buf + len / sizeof(*buf); 6041 6042 ptrlen = (struct ctl_ptr_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 6043 ptrlen->ptr = (void *)buf; 6044 ptrlen->len = len; 6045 ptrlen->flags = byte2; 6046 6047 for (; buf < end; buf++) { 6048 lba = scsi_8btou64(buf->lba); 6049 num_blocks = scsi_4btoul(buf->length); 6050 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 6051 || ((lba + num_blocks) < lba)) { 6052 ctl_set_lba_out_of_range(ctsio); 6053 ctl_done((union ctl_io *)ctsio); 6054 return (CTL_RETVAL_COMPLETE); 6055 } 6056 } 6057 6058 retval = lun->backend->config_write((union ctl_io *)ctsio); 6059 6060 return (retval); 6061} 6062 6063/* 6064 * Note that this function currently doesn't actually do anything inside 6065 * CTL to enforce things if the DQue bit is turned on. 6066 * 6067 * Also note that this function can't be used in the default case, because 6068 * the DQue bit isn't set in the changeable mask for the control mode page 6069 * anyway. This is just here as an example for how to implement a page 6070 * handler, and a placeholder in case we want to allow the user to turn 6071 * tagged queueing on and off. 6072 * 6073 * The D_SENSE bit handling is functional, however, and will turn 6074 * descriptor sense on and off for a given LUN. 6075 */ 6076int 6077ctl_control_page_handler(struct ctl_scsiio *ctsio, 6078 struct ctl_page_index *page_index, uint8_t *page_ptr) 6079{ 6080 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 6081 struct ctl_lun *lun; 6082 struct ctl_softc *softc; 6083 int set_ua; 6084 uint32_t initidx; 6085 6086 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6087 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 6088 set_ua = 0; 6089 6090 user_cp = (struct scsi_control_page *)page_ptr; 6091 current_cp = (struct scsi_control_page *) 6092 (page_index->page_data + (page_index->page_len * 6093 CTL_PAGE_CURRENT)); 6094 saved_cp = (struct scsi_control_page *) 6095 (page_index->page_data + (page_index->page_len * 6096 CTL_PAGE_SAVED)); 6097 6098 softc = control_softc; 6099 6100 mtx_lock(&softc->ctl_lock); 6101 if (((current_cp->rlec & SCP_DSENSE) == 0) 6102 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 6103 /* 6104 * Descriptor sense is currently turned off and the user 6105 * wants to turn it on. 6106 */ 6107 current_cp->rlec |= SCP_DSENSE; 6108 saved_cp->rlec |= SCP_DSENSE; 6109 lun->flags |= CTL_LUN_SENSE_DESC; 6110 set_ua = 1; 6111 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 6112 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 6113 /* 6114 * Descriptor sense is currently turned on, and the user 6115 * wants to turn it off. 6116 */ 6117 current_cp->rlec &= ~SCP_DSENSE; 6118 saved_cp->rlec &= ~SCP_DSENSE; 6119 lun->flags &= ~CTL_LUN_SENSE_DESC; 6120 set_ua = 1; 6121 } 6122 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 6123 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6124#ifdef NEEDTOPORT 6125 csevent_log(CSC_CTL | CSC_SHELF_SW | 6126 CTL_UNTAG_TO_UNTAG, 6127 csevent_LogType_Trace, 6128 csevent_Severity_Information, 6129 csevent_AlertLevel_Green, 6130 csevent_FRU_Firmware, 6131 csevent_FRU_Unknown, 6132 "Received untagged to untagged transition"); 6133#endif /* NEEDTOPORT */ 6134 } else { 6135#ifdef NEEDTOPORT 6136 csevent_log(CSC_CTL | CSC_SHELF_SW | 6137 CTL_UNTAG_TO_TAG, 6138 csevent_LogType_ConfigChange, 6139 csevent_Severity_Information, 6140 csevent_AlertLevel_Green, 6141 csevent_FRU_Firmware, 6142 csevent_FRU_Unknown, 6143 "Received untagged to tagged " 6144 "queueing transition"); 6145#endif /* NEEDTOPORT */ 6146 6147 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6148 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6149 set_ua = 1; 6150 } 6151 } else { 6152 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6153#ifdef NEEDTOPORT 6154 csevent_log(CSC_CTL | CSC_SHELF_SW | 6155 CTL_TAG_TO_UNTAG, 6156 csevent_LogType_ConfigChange, 6157 csevent_Severity_Warning, 6158 csevent_AlertLevel_Yellow, 6159 csevent_FRU_Firmware, 6160 csevent_FRU_Unknown, 6161 "Received tagged queueing to untagged " 6162 "transition"); 6163#endif /* NEEDTOPORT */ 6164 6165 current_cp->queue_flags |= SCP_QUEUE_DQUE; 6166 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 6167 set_ua = 1; 6168 } else { 6169#ifdef NEEDTOPORT 6170 csevent_log(CSC_CTL | CSC_SHELF_SW | 6171 CTL_TAG_TO_TAG, 6172 csevent_LogType_Trace, 6173 csevent_Severity_Information, 6174 csevent_AlertLevel_Green, 6175 csevent_FRU_Firmware, 6176 csevent_FRU_Unknown, 6177 "Received tagged queueing to tagged " 6178 "queueing transition"); 6179#endif /* NEEDTOPORT */ 6180 } 6181 } 6182 if (set_ua != 0) { 6183 int i; 6184 /* 6185 * Let other initiators know that the mode 6186 * parameters for this LUN have changed. 6187 */ 6188 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6189 if (i == initidx) 6190 continue; 6191 6192 lun->pending_sense[i].ua_pending |= 6193 CTL_UA_MODE_CHANGE; 6194 } 6195 } 6196 mtx_unlock(&softc->ctl_lock); 6197 6198 return (0); 6199} 6200 6201int 6202ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6203 struct ctl_page_index *page_index, uint8_t *page_ptr) 6204{ 6205 return (0); 6206} 6207 6208int 6209ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6210 struct ctl_page_index *page_index, int pc) 6211{ 6212 struct copan_power_subpage *page; 6213 6214 page = (struct copan_power_subpage *)page_index->page_data + 6215 (page_index->page_len * pc); 6216 6217 switch (pc) { 6218 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6219 /* 6220 * We don't update the changable bits for this page. 6221 */ 6222 break; 6223 case SMS_PAGE_CTRL_CURRENT >> 6: 6224 case SMS_PAGE_CTRL_DEFAULT >> 6: 6225 case SMS_PAGE_CTRL_SAVED >> 6: 6226#ifdef NEEDTOPORT 6227 ctl_update_power_subpage(page); 6228#endif 6229 break; 6230 default: 6231#ifdef NEEDTOPORT 6232 EPRINT(0, "Invalid PC %d!!", pc); 6233#endif 6234 break; 6235 } 6236 return (0); 6237} 6238 6239 6240int 6241ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6242 struct ctl_page_index *page_index, uint8_t *page_ptr) 6243{ 6244 struct copan_aps_subpage *user_sp; 6245 struct copan_aps_subpage *current_sp; 6246 union ctl_modepage_info *modepage_info; 6247 struct ctl_softc *softc; 6248 struct ctl_lun *lun; 6249 int retval; 6250 6251 retval = CTL_RETVAL_COMPLETE; 6252 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6253 (page_index->page_len * CTL_PAGE_CURRENT)); 6254 softc = control_softc; 6255 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6256 6257 user_sp = (struct copan_aps_subpage *)page_ptr; 6258 6259 modepage_info = (union ctl_modepage_info *) 6260 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6261 6262 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6263 modepage_info->header.subpage = page_index->subpage; 6264 modepage_info->aps.lock_active = user_sp->lock_active; 6265 6266 mtx_lock(&softc->ctl_lock); 6267 6268 /* 6269 * If there is a request to lock the LUN and another LUN is locked 6270 * this is an error. If the requested LUN is already locked ignore 6271 * the request. If no LUN is locked attempt to lock it. 6272 * if there is a request to unlock the LUN and the LUN is currently 6273 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6274 * if another LUN is locked or no LUN is locked. 6275 */ 6276 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6277 if (softc->aps_locked_lun == lun->lun) { 6278 /* 6279 * This LUN is already locked, so we're done. 6280 */ 6281 retval = CTL_RETVAL_COMPLETE; 6282 } else if (softc->aps_locked_lun == 0) { 6283 /* 6284 * No one has the lock, pass the request to the 6285 * backend. 6286 */ 6287 retval = lun->backend->config_write( 6288 (union ctl_io *)ctsio); 6289 } else { 6290 /* 6291 * Someone else has the lock, throw out the request. 6292 */ 6293 ctl_set_already_locked(ctsio); 6294 free(ctsio->kern_data_ptr, M_CTL); 6295 ctl_done((union ctl_io *)ctsio); 6296 6297 /* 6298 * Set the return value so that ctl_do_mode_select() 6299 * won't try to complete the command. We already 6300 * completed it here. 6301 */ 6302 retval = CTL_RETVAL_ERROR; 6303 } 6304 } else if (softc->aps_locked_lun == lun->lun) { 6305 /* 6306 * This LUN is locked, so pass the unlock request to the 6307 * backend. 6308 */ 6309 retval = lun->backend->config_write((union ctl_io *)ctsio); 6310 } 6311 mtx_unlock(&softc->ctl_lock); 6312 6313 return (retval); 6314} 6315 6316int 6317ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6318 struct ctl_page_index *page_index, 6319 uint8_t *page_ptr) 6320{ 6321 uint8_t *c; 6322 int i; 6323 6324 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6325 ctl_time_io_secs = 6326 (c[0] << 8) | 6327 (c[1] << 0) | 6328 0; 6329 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6330 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6331 printf("page data:"); 6332 for (i=0; i<8; i++) 6333 printf(" %.2x",page_ptr[i]); 6334 printf("\n"); 6335 return (0); 6336} 6337 6338int 6339ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6340 struct ctl_page_index *page_index, 6341 int pc) 6342{ 6343 struct copan_debugconf_subpage *page; 6344 6345 page = (struct copan_debugconf_subpage *)page_index->page_data + 6346 (page_index->page_len * pc); 6347 6348 switch (pc) { 6349 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6350 case SMS_PAGE_CTRL_DEFAULT >> 6: 6351 case SMS_PAGE_CTRL_SAVED >> 6: 6352 /* 6353 * We don't update the changable or default bits for this page. 6354 */ 6355 break; 6356 case SMS_PAGE_CTRL_CURRENT >> 6: 6357 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6358 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6359 break; 6360 default: 6361#ifdef NEEDTOPORT 6362 EPRINT(0, "Invalid PC %d!!", pc); 6363#endif /* NEEDTOPORT */ 6364 break; 6365 } 6366 return (0); 6367} 6368 6369 6370static int 6371ctl_do_mode_select(union ctl_io *io) 6372{ 6373 struct scsi_mode_page_header *page_header; 6374 struct ctl_page_index *page_index; 6375 struct ctl_scsiio *ctsio; 6376 int control_dev, page_len; 6377 int page_len_offset, page_len_size; 6378 union ctl_modepage_info *modepage_info; 6379 struct ctl_lun *lun; 6380 int *len_left, *len_used; 6381 int retval, i; 6382 6383 ctsio = &io->scsiio; 6384 page_index = NULL; 6385 page_len = 0; 6386 retval = CTL_RETVAL_COMPLETE; 6387 6388 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6389 6390 if (lun->be_lun->lun_type != T_DIRECT) 6391 control_dev = 1; 6392 else 6393 control_dev = 0; 6394 6395 modepage_info = (union ctl_modepage_info *) 6396 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6397 len_left = &modepage_info->header.len_left; 6398 len_used = &modepage_info->header.len_used; 6399 6400do_next_page: 6401 6402 page_header = (struct scsi_mode_page_header *) 6403 (ctsio->kern_data_ptr + *len_used); 6404 6405 if (*len_left == 0) { 6406 free(ctsio->kern_data_ptr, M_CTL); 6407 ctl_set_success(ctsio); 6408 ctl_done((union ctl_io *)ctsio); 6409 return (CTL_RETVAL_COMPLETE); 6410 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6411 6412 free(ctsio->kern_data_ptr, M_CTL); 6413 ctl_set_param_len_error(ctsio); 6414 ctl_done((union ctl_io *)ctsio); 6415 return (CTL_RETVAL_COMPLETE); 6416 6417 } else if ((page_header->page_code & SMPH_SPF) 6418 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6419 6420 free(ctsio->kern_data_ptr, M_CTL); 6421 ctl_set_param_len_error(ctsio); 6422 ctl_done((union ctl_io *)ctsio); 6423 return (CTL_RETVAL_COMPLETE); 6424 } 6425 6426 6427 /* 6428 * XXX KDM should we do something with the block descriptor? 6429 */ 6430 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6431 6432 if ((control_dev != 0) 6433 && (lun->mode_pages.index[i].page_flags & 6434 CTL_PAGE_FLAG_DISK_ONLY)) 6435 continue; 6436 6437 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6438 (page_header->page_code & SMPH_PC_MASK)) 6439 continue; 6440 6441 /* 6442 * If neither page has a subpage code, then we've got a 6443 * match. 6444 */ 6445 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6446 && ((page_header->page_code & SMPH_SPF) == 0)) { 6447 page_index = &lun->mode_pages.index[i]; 6448 page_len = page_header->page_length; 6449 break; 6450 } 6451 6452 /* 6453 * If both pages have subpages, then the subpage numbers 6454 * have to match. 6455 */ 6456 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6457 && (page_header->page_code & SMPH_SPF)) { 6458 struct scsi_mode_page_header_sp *sph; 6459 6460 sph = (struct scsi_mode_page_header_sp *)page_header; 6461 6462 if (lun->mode_pages.index[i].subpage == 6463 sph->subpage) { 6464 page_index = &lun->mode_pages.index[i]; 6465 page_len = scsi_2btoul(sph->page_length); 6466 break; 6467 } 6468 } 6469 } 6470 6471 /* 6472 * If we couldn't find the page, or if we don't have a mode select 6473 * handler for it, send back an error to the user. 6474 */ 6475 if ((page_index == NULL) 6476 || (page_index->select_handler == NULL)) { 6477 ctl_set_invalid_field(ctsio, 6478 /*sks_valid*/ 1, 6479 /*command*/ 0, 6480 /*field*/ *len_used, 6481 /*bit_valid*/ 0, 6482 /*bit*/ 0); 6483 free(ctsio->kern_data_ptr, M_CTL); 6484 ctl_done((union ctl_io *)ctsio); 6485 return (CTL_RETVAL_COMPLETE); 6486 } 6487 6488 if (page_index->page_code & SMPH_SPF) { 6489 page_len_offset = 2; 6490 page_len_size = 2; 6491 } else { 6492 page_len_size = 1; 6493 page_len_offset = 1; 6494 } 6495 6496 /* 6497 * If the length the initiator gives us isn't the one we specify in 6498 * the mode page header, or if they didn't specify enough data in 6499 * the CDB to avoid truncating this page, kick out the request. 6500 */ 6501 if ((page_len != (page_index->page_len - page_len_offset - 6502 page_len_size)) 6503 || (*len_left < page_index->page_len)) { 6504 6505 6506 ctl_set_invalid_field(ctsio, 6507 /*sks_valid*/ 1, 6508 /*command*/ 0, 6509 /*field*/ *len_used + page_len_offset, 6510 /*bit_valid*/ 0, 6511 /*bit*/ 0); 6512 free(ctsio->kern_data_ptr, M_CTL); 6513 ctl_done((union ctl_io *)ctsio); 6514 return (CTL_RETVAL_COMPLETE); 6515 } 6516 6517 /* 6518 * Run through the mode page, checking to make sure that the bits 6519 * the user changed are actually legal for him to change. 6520 */ 6521 for (i = 0; i < page_index->page_len; i++) { 6522 uint8_t *user_byte, *change_mask, *current_byte; 6523 int bad_bit; 6524 int j; 6525 6526 user_byte = (uint8_t *)page_header + i; 6527 change_mask = page_index->page_data + 6528 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6529 current_byte = page_index->page_data + 6530 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6531 6532 /* 6533 * Check to see whether the user set any bits in this byte 6534 * that he is not allowed to set. 6535 */ 6536 if ((*user_byte & ~(*change_mask)) == 6537 (*current_byte & ~(*change_mask))) 6538 continue; 6539 6540 /* 6541 * Go through bit by bit to determine which one is illegal. 6542 */ 6543 bad_bit = 0; 6544 for (j = 7; j >= 0; j--) { 6545 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6546 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6547 bad_bit = i; 6548 break; 6549 } 6550 } 6551 ctl_set_invalid_field(ctsio, 6552 /*sks_valid*/ 1, 6553 /*command*/ 0, 6554 /*field*/ *len_used + i, 6555 /*bit_valid*/ 1, 6556 /*bit*/ bad_bit); 6557 free(ctsio->kern_data_ptr, M_CTL); 6558 ctl_done((union ctl_io *)ctsio); 6559 return (CTL_RETVAL_COMPLETE); 6560 } 6561 6562 /* 6563 * Decrement these before we call the page handler, since we may 6564 * end up getting called back one way or another before the handler 6565 * returns to this context. 6566 */ 6567 *len_left -= page_index->page_len; 6568 *len_used += page_index->page_len; 6569 6570 retval = page_index->select_handler(ctsio, page_index, 6571 (uint8_t *)page_header); 6572 6573 /* 6574 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6575 * wait until this queued command completes to finish processing 6576 * the mode page. If it returns anything other than 6577 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6578 * already set the sense information, freed the data pointer, and 6579 * completed the io for us. 6580 */ 6581 if (retval != CTL_RETVAL_COMPLETE) 6582 goto bailout_no_done; 6583 6584 /* 6585 * If the initiator sent us more than one page, parse the next one. 6586 */ 6587 if (*len_left > 0) 6588 goto do_next_page; 6589 6590 ctl_set_success(ctsio); 6591 free(ctsio->kern_data_ptr, M_CTL); 6592 ctl_done((union ctl_io *)ctsio); 6593 6594bailout_no_done: 6595 6596 return (CTL_RETVAL_COMPLETE); 6597 6598} 6599 6600int 6601ctl_mode_select(struct ctl_scsiio *ctsio) 6602{ 6603 int param_len, pf, sp; 6604 int header_size, bd_len; 6605 int len_left, len_used; 6606 struct ctl_page_index *page_index; 6607 struct ctl_lun *lun; 6608 int control_dev, page_len; 6609 union ctl_modepage_info *modepage_info; 6610 int retval; 6611 6612 pf = 0; 6613 sp = 0; 6614 page_len = 0; 6615 len_used = 0; 6616 len_left = 0; 6617 retval = 0; 6618 bd_len = 0; 6619 page_index = NULL; 6620 6621 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6622 6623 if (lun->be_lun->lun_type != T_DIRECT) 6624 control_dev = 1; 6625 else 6626 control_dev = 0; 6627 6628 switch (ctsio->cdb[0]) { 6629 case MODE_SELECT_6: { 6630 struct scsi_mode_select_6 *cdb; 6631 6632 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6633 6634 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6635 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6636 6637 param_len = cdb->length; 6638 header_size = sizeof(struct scsi_mode_header_6); 6639 break; 6640 } 6641 case MODE_SELECT_10: { 6642 struct scsi_mode_select_10 *cdb; 6643 6644 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6645 6646 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6647 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6648 6649 param_len = scsi_2btoul(cdb->length); 6650 header_size = sizeof(struct scsi_mode_header_10); 6651 break; 6652 } 6653 default: 6654 ctl_set_invalid_opcode(ctsio); 6655 ctl_done((union ctl_io *)ctsio); 6656 return (CTL_RETVAL_COMPLETE); 6657 break; /* NOTREACHED */ 6658 } 6659 6660 /* 6661 * From SPC-3: 6662 * "A parameter list length of zero indicates that the Data-Out Buffer 6663 * shall be empty. This condition shall not be considered as an error." 6664 */ 6665 if (param_len == 0) { 6666 ctl_set_success(ctsio); 6667 ctl_done((union ctl_io *)ctsio); 6668 return (CTL_RETVAL_COMPLETE); 6669 } 6670 6671 /* 6672 * Since we'll hit this the first time through, prior to 6673 * allocation, we don't need to free a data buffer here. 6674 */ 6675 if (param_len < header_size) { 6676 ctl_set_param_len_error(ctsio); 6677 ctl_done((union ctl_io *)ctsio); 6678 return (CTL_RETVAL_COMPLETE); 6679 } 6680 6681 /* 6682 * Allocate the data buffer and grab the user's data. In theory, 6683 * we shouldn't have to sanity check the parameter list length here 6684 * because the maximum size is 64K. We should be able to malloc 6685 * that much without too many problems. 6686 */ 6687 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6688 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6689 ctsio->kern_data_len = param_len; 6690 ctsio->kern_total_len = param_len; 6691 ctsio->kern_data_resid = 0; 6692 ctsio->kern_rel_offset = 0; 6693 ctsio->kern_sg_entries = 0; 6694 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6695 ctsio->be_move_done = ctl_config_move_done; 6696 ctl_datamove((union ctl_io *)ctsio); 6697 6698 return (CTL_RETVAL_COMPLETE); 6699 } 6700 6701 switch (ctsio->cdb[0]) { 6702 case MODE_SELECT_6: { 6703 struct scsi_mode_header_6 *mh6; 6704 6705 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6706 bd_len = mh6->blk_desc_len; 6707 break; 6708 } 6709 case MODE_SELECT_10: { 6710 struct scsi_mode_header_10 *mh10; 6711 6712 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6713 bd_len = scsi_2btoul(mh10->blk_desc_len); 6714 break; 6715 } 6716 default: 6717 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6718 break; 6719 } 6720 6721 if (param_len < (header_size + bd_len)) { 6722 free(ctsio->kern_data_ptr, M_CTL); 6723 ctl_set_param_len_error(ctsio); 6724 ctl_done((union ctl_io *)ctsio); 6725 return (CTL_RETVAL_COMPLETE); 6726 } 6727 6728 /* 6729 * Set the IO_CONT flag, so that if this I/O gets passed to 6730 * ctl_config_write_done(), it'll get passed back to 6731 * ctl_do_mode_select() for further processing, or completion if 6732 * we're all done. 6733 */ 6734 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6735 ctsio->io_cont = ctl_do_mode_select; 6736 6737 modepage_info = (union ctl_modepage_info *) 6738 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6739 6740 memset(modepage_info, 0, sizeof(*modepage_info)); 6741 6742 len_left = param_len - header_size - bd_len; 6743 len_used = header_size + bd_len; 6744 6745 modepage_info->header.len_left = len_left; 6746 modepage_info->header.len_used = len_used; 6747 6748 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6749} 6750 6751int 6752ctl_mode_sense(struct ctl_scsiio *ctsio) 6753{ 6754 struct ctl_lun *lun; 6755 int pc, page_code, dbd, llba, subpage; 6756 int alloc_len, page_len, header_len, total_len; 6757 struct scsi_mode_block_descr *block_desc; 6758 struct ctl_page_index *page_index; 6759 int control_dev; 6760 6761 dbd = 0; 6762 llba = 0; 6763 block_desc = NULL; 6764 page_index = NULL; 6765 6766 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6767 6768 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6769 6770 if (lun->be_lun->lun_type != T_DIRECT) 6771 control_dev = 1; 6772 else 6773 control_dev = 0; 6774 6775 if (lun->flags & CTL_LUN_PR_RESERVED) { 6776 uint32_t residx; 6777 6778 /* 6779 * XXX KDM need a lock here. 6780 */ 6781 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 6782 if ((lun->res_type == SPR_TYPE_EX_AC 6783 && residx != lun->pr_res_idx) 6784 || ((lun->res_type == SPR_TYPE_EX_AC_RO 6785 || lun->res_type == SPR_TYPE_EX_AC_AR) 6786 && !lun->per_res[residx].registered)) { 6787 ctl_set_reservation_conflict(ctsio); 6788 ctl_done((union ctl_io *)ctsio); 6789 return (CTL_RETVAL_COMPLETE); 6790 } 6791 } 6792 6793 switch (ctsio->cdb[0]) { 6794 case MODE_SENSE_6: { 6795 struct scsi_mode_sense_6 *cdb; 6796 6797 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6798 6799 header_len = sizeof(struct scsi_mode_hdr_6); 6800 if (cdb->byte2 & SMS_DBD) 6801 dbd = 1; 6802 else 6803 header_len += sizeof(struct scsi_mode_block_descr); 6804 6805 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6806 page_code = cdb->page & SMS_PAGE_CODE; 6807 subpage = cdb->subpage; 6808 alloc_len = cdb->length; 6809 break; 6810 } 6811 case MODE_SENSE_10: { 6812 struct scsi_mode_sense_10 *cdb; 6813 6814 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6815 6816 header_len = sizeof(struct scsi_mode_hdr_10); 6817 6818 if (cdb->byte2 & SMS_DBD) 6819 dbd = 1; 6820 else 6821 header_len += sizeof(struct scsi_mode_block_descr); 6822 if (cdb->byte2 & SMS10_LLBAA) 6823 llba = 1; 6824 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6825 page_code = cdb->page & SMS_PAGE_CODE; 6826 subpage = cdb->subpage; 6827 alloc_len = scsi_2btoul(cdb->length); 6828 break; 6829 } 6830 default: 6831 ctl_set_invalid_opcode(ctsio); 6832 ctl_done((union ctl_io *)ctsio); 6833 return (CTL_RETVAL_COMPLETE); 6834 break; /* NOTREACHED */ 6835 } 6836 6837 /* 6838 * We have to make a first pass through to calculate the size of 6839 * the pages that match the user's query. Then we allocate enough 6840 * memory to hold it, and actually copy the data into the buffer. 6841 */ 6842 switch (page_code) { 6843 case SMS_ALL_PAGES_PAGE: { 6844 int i; 6845 6846 page_len = 0; 6847 6848 /* 6849 * At the moment, values other than 0 and 0xff here are 6850 * reserved according to SPC-3. 6851 */ 6852 if ((subpage != SMS_SUBPAGE_PAGE_0) 6853 && (subpage != SMS_SUBPAGE_ALL)) { 6854 ctl_set_invalid_field(ctsio, 6855 /*sks_valid*/ 1, 6856 /*command*/ 1, 6857 /*field*/ 3, 6858 /*bit_valid*/ 0, 6859 /*bit*/ 0); 6860 ctl_done((union ctl_io *)ctsio); 6861 return (CTL_RETVAL_COMPLETE); 6862 } 6863 6864 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6865 if ((control_dev != 0) 6866 && (lun->mode_pages.index[i].page_flags & 6867 CTL_PAGE_FLAG_DISK_ONLY)) 6868 continue; 6869 6870 /* 6871 * We don't use this subpage if the user didn't 6872 * request all subpages. 6873 */ 6874 if ((lun->mode_pages.index[i].subpage != 0) 6875 && (subpage == SMS_SUBPAGE_PAGE_0)) 6876 continue; 6877 6878#if 0 6879 printf("found page %#x len %d\n", 6880 lun->mode_pages.index[i].page_code & 6881 SMPH_PC_MASK, 6882 lun->mode_pages.index[i].page_len); 6883#endif 6884 page_len += lun->mode_pages.index[i].page_len; 6885 } 6886 break; 6887 } 6888 default: { 6889 int i; 6890 6891 page_len = 0; 6892 6893 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6894 /* Look for the right page code */ 6895 if ((lun->mode_pages.index[i].page_code & 6896 SMPH_PC_MASK) != page_code) 6897 continue; 6898 6899 /* Look for the right subpage or the subpage wildcard*/ 6900 if ((lun->mode_pages.index[i].subpage != subpage) 6901 && (subpage != SMS_SUBPAGE_ALL)) 6902 continue; 6903 6904 /* Make sure the page is supported for this dev type */ 6905 if ((control_dev != 0) 6906 && (lun->mode_pages.index[i].page_flags & 6907 CTL_PAGE_FLAG_DISK_ONLY)) 6908 continue; 6909 6910#if 0 6911 printf("found page %#x len %d\n", 6912 lun->mode_pages.index[i].page_code & 6913 SMPH_PC_MASK, 6914 lun->mode_pages.index[i].page_len); 6915#endif 6916 6917 page_len += lun->mode_pages.index[i].page_len; 6918 } 6919 6920 if (page_len == 0) { 6921 ctl_set_invalid_field(ctsio, 6922 /*sks_valid*/ 1, 6923 /*command*/ 1, 6924 /*field*/ 2, 6925 /*bit_valid*/ 1, 6926 /*bit*/ 5); 6927 ctl_done((union ctl_io *)ctsio); 6928 return (CTL_RETVAL_COMPLETE); 6929 } 6930 break; 6931 } 6932 } 6933 6934 total_len = header_len + page_len; 6935#if 0 6936 printf("header_len = %d, page_len = %d, total_len = %d\n", 6937 header_len, page_len, total_len); 6938#endif 6939 6940 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6941 ctsio->kern_sg_entries = 0; 6942 ctsio->kern_data_resid = 0; 6943 ctsio->kern_rel_offset = 0; 6944 if (total_len < alloc_len) { 6945 ctsio->residual = alloc_len - total_len; 6946 ctsio->kern_data_len = total_len; 6947 ctsio->kern_total_len = total_len; 6948 } else { 6949 ctsio->residual = 0; 6950 ctsio->kern_data_len = alloc_len; 6951 ctsio->kern_total_len = alloc_len; 6952 } 6953 6954 switch (ctsio->cdb[0]) { 6955 case MODE_SENSE_6: { 6956 struct scsi_mode_hdr_6 *header; 6957 6958 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6959 6960 header->datalen = ctl_min(total_len - 1, 254); 6961 6962 if (dbd) 6963 header->block_descr_len = 0; 6964 else 6965 header->block_descr_len = 6966 sizeof(struct scsi_mode_block_descr); 6967 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6968 break; 6969 } 6970 case MODE_SENSE_10: { 6971 struct scsi_mode_hdr_10 *header; 6972 int datalen; 6973 6974 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6975 6976 datalen = ctl_min(total_len - 2, 65533); 6977 scsi_ulto2b(datalen, header->datalen); 6978 if (dbd) 6979 scsi_ulto2b(0, header->block_descr_len); 6980 else 6981 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6982 header->block_descr_len); 6983 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6984 break; 6985 } 6986 default: 6987 panic("invalid CDB type %#x", ctsio->cdb[0]); 6988 break; /* NOTREACHED */ 6989 } 6990 6991 /* 6992 * If we've got a disk, use its blocksize in the block 6993 * descriptor. Otherwise, just set it to 0. 6994 */ 6995 if (dbd == 0) { 6996 if (control_dev != 0) 6997 scsi_ulto3b(lun->be_lun->blocksize, 6998 block_desc->block_len); 6999 else 7000 scsi_ulto3b(0, block_desc->block_len); 7001 } 7002 7003 switch (page_code) { 7004 case SMS_ALL_PAGES_PAGE: { 7005 int i, data_used; 7006 7007 data_used = header_len; 7008 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 7009 struct ctl_page_index *page_index; 7010 7011 page_index = &lun->mode_pages.index[i]; 7012 7013 if ((control_dev != 0) 7014 && (page_index->page_flags & 7015 CTL_PAGE_FLAG_DISK_ONLY)) 7016 continue; 7017 7018 /* 7019 * We don't use this subpage if the user didn't 7020 * request all subpages. We already checked (above) 7021 * to make sure the user only specified a subpage 7022 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 7023 */ 7024 if ((page_index->subpage != 0) 7025 && (subpage == SMS_SUBPAGE_PAGE_0)) 7026 continue; 7027 7028 /* 7029 * Call the handler, if it exists, to update the 7030 * page to the latest values. 7031 */ 7032 if (page_index->sense_handler != NULL) 7033 page_index->sense_handler(ctsio, page_index,pc); 7034 7035 memcpy(ctsio->kern_data_ptr + data_used, 7036 page_index->page_data + 7037 (page_index->page_len * pc), 7038 page_index->page_len); 7039 data_used += page_index->page_len; 7040 } 7041 break; 7042 } 7043 default: { 7044 int i, data_used; 7045 7046 data_used = header_len; 7047 7048 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 7049 struct ctl_page_index *page_index; 7050 7051 page_index = &lun->mode_pages.index[i]; 7052 7053 /* Look for the right page code */ 7054 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 7055 continue; 7056 7057 /* Look for the right subpage or the subpage wildcard*/ 7058 if ((page_index->subpage != subpage) 7059 && (subpage != SMS_SUBPAGE_ALL)) 7060 continue; 7061 7062 /* Make sure the page is supported for this dev type */ 7063 if ((control_dev != 0) 7064 && (page_index->page_flags & 7065 CTL_PAGE_FLAG_DISK_ONLY)) 7066 continue; 7067 7068 /* 7069 * Call the handler, if it exists, to update the 7070 * page to the latest values. 7071 */ 7072 if (page_index->sense_handler != NULL) 7073 page_index->sense_handler(ctsio, page_index,pc); 7074 7075 memcpy(ctsio->kern_data_ptr + data_used, 7076 page_index->page_data + 7077 (page_index->page_len * pc), 7078 page_index->page_len); 7079 data_used += page_index->page_len; 7080 } 7081 break; 7082 } 7083 } 7084 7085 ctsio->scsi_status = SCSI_STATUS_OK; 7086 7087 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7088 ctsio->be_move_done = ctl_config_move_done; 7089 ctl_datamove((union ctl_io *)ctsio); 7090 7091 return (CTL_RETVAL_COMPLETE); 7092} 7093 7094int 7095ctl_read_capacity(struct ctl_scsiio *ctsio) 7096{ 7097 struct scsi_read_capacity *cdb; 7098 struct scsi_read_capacity_data *data; 7099 struct ctl_lun *lun; 7100 uint32_t lba; 7101 7102 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 7103 7104 cdb = (struct scsi_read_capacity *)ctsio->cdb; 7105 7106 lba = scsi_4btoul(cdb->addr); 7107 if (((cdb->pmi & SRC_PMI) == 0) 7108 && (lba != 0)) { 7109 ctl_set_invalid_field(/*ctsio*/ ctsio, 7110 /*sks_valid*/ 1, 7111 /*command*/ 1, 7112 /*field*/ 2, 7113 /*bit_valid*/ 0, 7114 /*bit*/ 0); 7115 ctl_done((union ctl_io *)ctsio); 7116 return (CTL_RETVAL_COMPLETE); 7117 } 7118 7119 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7120 7121 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7122 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 7123 ctsio->residual = 0; 7124 ctsio->kern_data_len = sizeof(*data); 7125 ctsio->kern_total_len = sizeof(*data); 7126 ctsio->kern_data_resid = 0; 7127 ctsio->kern_rel_offset = 0; 7128 ctsio->kern_sg_entries = 0; 7129 7130 /* 7131 * If the maximum LBA is greater than 0xfffffffe, the user must 7132 * issue a SERVICE ACTION IN (16) command, with the read capacity 7133 * serivce action set. 7134 */ 7135 if (lun->be_lun->maxlba > 0xfffffffe) 7136 scsi_ulto4b(0xffffffff, data->addr); 7137 else 7138 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 7139 7140 /* 7141 * XXX KDM this may not be 512 bytes... 7142 */ 7143 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7144 7145 ctsio->scsi_status = SCSI_STATUS_OK; 7146 7147 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7148 ctsio->be_move_done = ctl_config_move_done; 7149 ctl_datamove((union ctl_io *)ctsio); 7150 7151 return (CTL_RETVAL_COMPLETE); 7152} 7153 7154static int 7155ctl_read_capacity_16(struct ctl_scsiio *ctsio) 7156{ 7157 struct scsi_read_capacity_16 *cdb; 7158 struct scsi_read_capacity_data_long *data; 7159 struct ctl_lun *lun; 7160 uint64_t lba; 7161 uint32_t alloc_len; 7162 7163 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 7164 7165 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 7166 7167 alloc_len = scsi_4btoul(cdb->alloc_len); 7168 lba = scsi_8btou64(cdb->addr); 7169 7170 if ((cdb->reladr & SRC16_PMI) 7171 && (lba != 0)) { 7172 ctl_set_invalid_field(/*ctsio*/ ctsio, 7173 /*sks_valid*/ 1, 7174 /*command*/ 1, 7175 /*field*/ 2, 7176 /*bit_valid*/ 0, 7177 /*bit*/ 0); 7178 ctl_done((union ctl_io *)ctsio); 7179 return (CTL_RETVAL_COMPLETE); 7180 } 7181 7182 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7183 7184 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7185 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 7186 7187 if (sizeof(*data) < alloc_len) { 7188 ctsio->residual = alloc_len - sizeof(*data); 7189 ctsio->kern_data_len = sizeof(*data); 7190 ctsio->kern_total_len = sizeof(*data); 7191 } else { 7192 ctsio->residual = 0; 7193 ctsio->kern_data_len = alloc_len; 7194 ctsio->kern_total_len = alloc_len; 7195 } 7196 ctsio->kern_data_resid = 0; 7197 ctsio->kern_rel_offset = 0; 7198 ctsio->kern_sg_entries = 0; 7199 7200 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7201 /* XXX KDM this may not be 512 bytes... */ 7202 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7203 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7204 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7205 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7206 data->lalba_lbp[0] |= SRC16_LBPME; 7207 7208 ctsio->scsi_status = SCSI_STATUS_OK; 7209 7210 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7211 ctsio->be_move_done = ctl_config_move_done; 7212 ctl_datamove((union ctl_io *)ctsio); 7213 7214 return (CTL_RETVAL_COMPLETE); 7215} 7216 7217int 7218ctl_service_action_in(struct ctl_scsiio *ctsio) 7219{ 7220 struct scsi_service_action_in *cdb; 7221 int retval; 7222 7223 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 7224 7225 cdb = (struct scsi_service_action_in *)ctsio->cdb; 7226 7227 retval = CTL_RETVAL_COMPLETE; 7228 7229 switch (cdb->service_action) { 7230 case SRC16_SERVICE_ACTION: 7231 retval = ctl_read_capacity_16(ctsio); 7232 break; 7233 default: 7234 ctl_set_invalid_field(/*ctsio*/ ctsio, 7235 /*sks_valid*/ 1, 7236 /*command*/ 1, 7237 /*field*/ 1, 7238 /*bit_valid*/ 1, 7239 /*bit*/ 4); 7240 ctl_done((union ctl_io *)ctsio); 7241 break; 7242 } 7243 7244 return (retval); 7245} 7246 7247int 7248ctl_maintenance_in(struct ctl_scsiio *ctsio) 7249{ 7250 struct scsi_maintenance_in *cdb; 7251 int retval; 7252 int alloc_len, total_len = 0; 7253 int num_target_port_groups, single; 7254 struct ctl_lun *lun; 7255 struct ctl_softc *softc; 7256 struct scsi_target_group_data *rtg_ptr; 7257 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 7258 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 7259 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 7260 7261 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 7262 7263 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 7264 softc = control_softc; 7265 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7266 7267 retval = CTL_RETVAL_COMPLETE; 7268 7269 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 7270 ctl_set_invalid_field(/*ctsio*/ ctsio, 7271 /*sks_valid*/ 1, 7272 /*command*/ 1, 7273 /*field*/ 1, 7274 /*bit_valid*/ 1, 7275 /*bit*/ 4); 7276 ctl_done((union ctl_io *)ctsio); 7277 return(retval); 7278 } 7279 7280 mtx_lock(&softc->ctl_lock); 7281 single = ctl_is_single; 7282 mtx_unlock(&softc->ctl_lock); 7283 7284 if (single) 7285 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 7286 else 7287 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7288 7289 total_len = sizeof(struct scsi_target_group_data) + 7290 sizeof(struct scsi_target_port_group_descriptor) * 7291 num_target_port_groups + 7292 sizeof(struct scsi_target_port_descriptor) * 7293 NUM_PORTS_PER_GRP * num_target_port_groups; 7294 7295 alloc_len = scsi_4btoul(cdb->length); 7296 7297 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7298 7299 ctsio->kern_sg_entries = 0; 7300 7301 if (total_len < alloc_len) { 7302 ctsio->residual = alloc_len - total_len; 7303 ctsio->kern_data_len = total_len; 7304 ctsio->kern_total_len = total_len; 7305 } else { 7306 ctsio->residual = 0; 7307 ctsio->kern_data_len = alloc_len; 7308 ctsio->kern_total_len = alloc_len; 7309 } 7310 ctsio->kern_data_resid = 0; 7311 ctsio->kern_rel_offset = 0; 7312 7313 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7314 7315 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7316 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7317 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7318 &tp_desc_ptr1_1->desc_list[0]; 7319 7320 if (single == 0) { 7321 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7322 &tp_desc_ptr1_2->desc_list[0]; 7323 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7324 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7325 &tp_desc_ptr2_1->desc_list[0]; 7326 } else { 7327 tpg_desc_ptr2 = NULL; 7328 tp_desc_ptr2_1 = NULL; 7329 tp_desc_ptr2_2 = NULL; 7330 } 7331 7332 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7333 if (single == 0) { 7334 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7335 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7336 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7337 tpg_desc_ptr2->pref_state = 7338 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7339 } else { 7340 tpg_desc_ptr1->pref_state = 7341 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7342 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7343 } 7344 } else { 7345 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7346 tpg_desc_ptr1->pref_state = 7347 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7348 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7349 } else { 7350 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7351 tpg_desc_ptr2->pref_state = 7352 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7353 } 7354 } 7355 } else { 7356 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7357 } 7358 tpg_desc_ptr1->support = 0; 7359 tpg_desc_ptr1->target_port_group[1] = 1; 7360 tpg_desc_ptr1->status = TPG_IMPLICIT; 7361 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7362 7363 if (single == 0) { 7364 tpg_desc_ptr2->support = 0; 7365 tpg_desc_ptr2->target_port_group[1] = 2; 7366 tpg_desc_ptr2->status = TPG_IMPLICIT; 7367 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7368 7369 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7370 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7371 7372 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7373 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7374 } else { 7375 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7376 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7377 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7378 } else { 7379 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7380 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7381 } 7382 } 7383 7384 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7385 ctsio->be_move_done = ctl_config_move_done; 7386 7387 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7388 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7389 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7390 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7391 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7392 7393 ctl_datamove((union ctl_io *)ctsio); 7394 return(retval); 7395} 7396 7397int 7398ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7399{ 7400 struct scsi_per_res_in *cdb; 7401 int alloc_len, total_len = 0; 7402 /* struct scsi_per_res_in_rsrv in_data; */ 7403 struct ctl_lun *lun; 7404 struct ctl_softc *softc; 7405 7406 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7407 7408 softc = control_softc; 7409 7410 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7411 7412 alloc_len = scsi_2btoul(cdb->length); 7413 7414 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7415 7416retry: 7417 mtx_lock(&softc->ctl_lock); 7418 switch (cdb->action) { 7419 case SPRI_RK: /* read keys */ 7420 total_len = sizeof(struct scsi_per_res_in_keys) + 7421 lun->pr_key_count * 7422 sizeof(struct scsi_per_res_key); 7423 break; 7424 case SPRI_RR: /* read reservation */ 7425 if (lun->flags & CTL_LUN_PR_RESERVED) 7426 total_len = sizeof(struct scsi_per_res_in_rsrv); 7427 else 7428 total_len = sizeof(struct scsi_per_res_in_header); 7429 break; 7430 case SPRI_RC: /* report capabilities */ 7431 total_len = sizeof(struct scsi_per_res_cap); 7432 break; 7433 case SPRI_RS: /* read full status */ 7434 default: 7435 mtx_unlock(&softc->ctl_lock); 7436 ctl_set_invalid_field(ctsio, 7437 /*sks_valid*/ 1, 7438 /*command*/ 1, 7439 /*field*/ 1, 7440 /*bit_valid*/ 1, 7441 /*bit*/ 0); 7442 ctl_done((union ctl_io *)ctsio); 7443 return (CTL_RETVAL_COMPLETE); 7444 break; /* NOTREACHED */ 7445 } 7446 mtx_unlock(&softc->ctl_lock); 7447 7448 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7449 7450 if (total_len < alloc_len) { 7451 ctsio->residual = alloc_len - total_len; 7452 ctsio->kern_data_len = total_len; 7453 ctsio->kern_total_len = total_len; 7454 } else { 7455 ctsio->residual = 0; 7456 ctsio->kern_data_len = alloc_len; 7457 ctsio->kern_total_len = alloc_len; 7458 } 7459 7460 ctsio->kern_data_resid = 0; 7461 ctsio->kern_rel_offset = 0; 7462 ctsio->kern_sg_entries = 0; 7463 7464 mtx_lock(&softc->ctl_lock); 7465 switch (cdb->action) { 7466 case SPRI_RK: { // read keys 7467 struct scsi_per_res_in_keys *res_keys; 7468 int i, key_count; 7469 7470 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7471 7472 /* 7473 * We had to drop the lock to allocate our buffer, which 7474 * leaves time for someone to come in with another 7475 * persistent reservation. (That is unlikely, though, 7476 * since this should be the only persistent reservation 7477 * command active right now.) 7478 */ 7479 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7480 (lun->pr_key_count * 7481 sizeof(struct scsi_per_res_key)))){ 7482 mtx_unlock(&softc->ctl_lock); 7483 free(ctsio->kern_data_ptr, M_CTL); 7484 printf("%s: reservation length changed, retrying\n", 7485 __func__); 7486 goto retry; 7487 } 7488 7489 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7490 7491 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7492 lun->pr_key_count, res_keys->header.length); 7493 7494 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7495 if (!lun->per_res[i].registered) 7496 continue; 7497 7498 /* 7499 * We used lun->pr_key_count to calculate the 7500 * size to allocate. If it turns out the number of 7501 * initiators with the registered flag set is 7502 * larger than that (i.e. they haven't been kept in 7503 * sync), we've got a problem. 7504 */ 7505 if (key_count >= lun->pr_key_count) { 7506#ifdef NEEDTOPORT 7507 csevent_log(CSC_CTL | CSC_SHELF_SW | 7508 CTL_PR_ERROR, 7509 csevent_LogType_Fault, 7510 csevent_AlertLevel_Yellow, 7511 csevent_FRU_ShelfController, 7512 csevent_FRU_Firmware, 7513 csevent_FRU_Unknown, 7514 "registered keys %d >= key " 7515 "count %d", key_count, 7516 lun->pr_key_count); 7517#endif 7518 key_count++; 7519 continue; 7520 } 7521 memcpy(res_keys->keys[key_count].key, 7522 lun->per_res[i].res_key.key, 7523 ctl_min(sizeof(res_keys->keys[key_count].key), 7524 sizeof(lun->per_res[i].res_key))); 7525 key_count++; 7526 } 7527 break; 7528 } 7529 case SPRI_RR: { // read reservation 7530 struct scsi_per_res_in_rsrv *res; 7531 int tmp_len, header_only; 7532 7533 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7534 7535 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7536 7537 if (lun->flags & CTL_LUN_PR_RESERVED) 7538 { 7539 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7540 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7541 res->header.length); 7542 header_only = 0; 7543 } else { 7544 tmp_len = sizeof(struct scsi_per_res_in_header); 7545 scsi_ulto4b(0, res->header.length); 7546 header_only = 1; 7547 } 7548 7549 /* 7550 * We had to drop the lock to allocate our buffer, which 7551 * leaves time for someone to come in with another 7552 * persistent reservation. (That is unlikely, though, 7553 * since this should be the only persistent reservation 7554 * command active right now.) 7555 */ 7556 if (tmp_len != total_len) { 7557 mtx_unlock(&softc->ctl_lock); 7558 free(ctsio->kern_data_ptr, M_CTL); 7559 printf("%s: reservation status changed, retrying\n", 7560 __func__); 7561 goto retry; 7562 } 7563 7564 /* 7565 * No reservation held, so we're done. 7566 */ 7567 if (header_only != 0) 7568 break; 7569 7570 /* 7571 * If the registration is an All Registrants type, the key 7572 * is 0, since it doesn't really matter. 7573 */ 7574 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7575 memcpy(res->data.reservation, 7576 &lun->per_res[lun->pr_res_idx].res_key, 7577 sizeof(struct scsi_per_res_key)); 7578 } 7579 res->data.scopetype = lun->res_type; 7580 break; 7581 } 7582 case SPRI_RC: //report capabilities 7583 { 7584 struct scsi_per_res_cap *res_cap; 7585 uint16_t type_mask; 7586 7587 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7588 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7589 res_cap->flags2 |= SPRI_TMV | SPRI_ALLOW_3; 7590 type_mask = SPRI_TM_WR_EX_AR | 7591 SPRI_TM_EX_AC_RO | 7592 SPRI_TM_WR_EX_RO | 7593 SPRI_TM_EX_AC | 7594 SPRI_TM_WR_EX | 7595 SPRI_TM_EX_AC_AR; 7596 scsi_ulto2b(type_mask, res_cap->type_mask); 7597 break; 7598 } 7599 case SPRI_RS: //read full status 7600 default: 7601 /* 7602 * This is a bug, because we just checked for this above, 7603 * and should have returned an error. 7604 */ 7605 panic("Invalid PR type %x", cdb->action); 7606 break; /* NOTREACHED */ 7607 } 7608 mtx_unlock(&softc->ctl_lock); 7609 7610 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7611 ctsio->be_move_done = ctl_config_move_done; 7612 7613 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7614 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7615 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7616 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7617 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7618 7619 ctl_datamove((union ctl_io *)ctsio); 7620 7621 return (CTL_RETVAL_COMPLETE); 7622} 7623 7624/* 7625 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7626 * it should return. 7627 */ 7628static int 7629ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7630 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7631 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7632 struct scsi_per_res_out_parms* param) 7633{ 7634 union ctl_ha_msg persis_io; 7635 int retval, i; 7636 int isc_retval; 7637 7638 retval = 0; 7639 7640 if (sa_res_key == 0) { 7641 mtx_lock(&softc->ctl_lock); 7642 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7643 /* validate scope and type */ 7644 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7645 SPR_LU_SCOPE) { 7646 mtx_unlock(&softc->ctl_lock); 7647 ctl_set_invalid_field(/*ctsio*/ ctsio, 7648 /*sks_valid*/ 1, 7649 /*command*/ 1, 7650 /*field*/ 2, 7651 /*bit_valid*/ 1, 7652 /*bit*/ 4); 7653 ctl_done((union ctl_io *)ctsio); 7654 return (1); 7655 } 7656 7657 if (type>8 || type==2 || type==4 || type==0) { 7658 mtx_unlock(&softc->ctl_lock); 7659 ctl_set_invalid_field(/*ctsio*/ ctsio, 7660 /*sks_valid*/ 1, 7661 /*command*/ 1, 7662 /*field*/ 2, 7663 /*bit_valid*/ 1, 7664 /*bit*/ 0); 7665 ctl_done((union ctl_io *)ctsio); 7666 return (1); 7667 } 7668 7669 /* temporarily unregister this nexus */ 7670 lun->per_res[residx].registered = 0; 7671 7672 /* 7673 * Unregister everybody else and build UA for 7674 * them 7675 */ 7676 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7677 if (lun->per_res[i].registered == 0) 7678 continue; 7679 7680 if (!persis_offset 7681 && i <CTL_MAX_INITIATORS) 7682 lun->pending_sense[i].ua_pending |= 7683 CTL_UA_REG_PREEMPT; 7684 else if (persis_offset 7685 && i >= persis_offset) 7686 lun->pending_sense[i-persis_offset 7687 ].ua_pending |= 7688 CTL_UA_REG_PREEMPT; 7689 lun->per_res[i].registered = 0; 7690 memset(&lun->per_res[i].res_key, 0, 7691 sizeof(struct scsi_per_res_key)); 7692 } 7693 lun->per_res[residx].registered = 1; 7694 lun->pr_key_count = 1; 7695 lun->res_type = type; 7696 if (lun->res_type != SPR_TYPE_WR_EX_AR 7697 && lun->res_type != SPR_TYPE_EX_AC_AR) 7698 lun->pr_res_idx = residx; 7699 7700 mtx_unlock(&softc->ctl_lock); 7701 /* send msg to other side */ 7702 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7703 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7704 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7705 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7706 persis_io.pr.pr_info.res_type = type; 7707 memcpy(persis_io.pr.pr_info.sa_res_key, 7708 param->serv_act_res_key, 7709 sizeof(param->serv_act_res_key)); 7710 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7711 &persis_io, sizeof(persis_io), 0)) > 7712 CTL_HA_STATUS_SUCCESS) { 7713 printf("CTL:Persis Out error returned " 7714 "from ctl_ha_msg_send %d\n", 7715 isc_retval); 7716 } 7717 } else { 7718 /* not all registrants */ 7719 mtx_unlock(&softc->ctl_lock); 7720 free(ctsio->kern_data_ptr, M_CTL); 7721 ctl_set_invalid_field(ctsio, 7722 /*sks_valid*/ 1, 7723 /*command*/ 0, 7724 /*field*/ 8, 7725 /*bit_valid*/ 0, 7726 /*bit*/ 0); 7727 ctl_done((union ctl_io *)ctsio); 7728 return (1); 7729 } 7730 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7731 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7732 int found = 0; 7733 7734 mtx_lock(&softc->ctl_lock); 7735 if (res_key == sa_res_key) { 7736 /* special case */ 7737 /* 7738 * The spec implies this is not good but doesn't 7739 * say what to do. There are two choices either 7740 * generate a res conflict or check condition 7741 * with illegal field in parameter data. Since 7742 * that is what is done when the sa_res_key is 7743 * zero I'll take that approach since this has 7744 * to do with the sa_res_key. 7745 */ 7746 mtx_unlock(&softc->ctl_lock); 7747 free(ctsio->kern_data_ptr, M_CTL); 7748 ctl_set_invalid_field(ctsio, 7749 /*sks_valid*/ 1, 7750 /*command*/ 0, 7751 /*field*/ 8, 7752 /*bit_valid*/ 0, 7753 /*bit*/ 0); 7754 ctl_done((union ctl_io *)ctsio); 7755 return (1); 7756 } 7757 7758 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7759 if (lun->per_res[i].registered 7760 && memcmp(param->serv_act_res_key, 7761 lun->per_res[i].res_key.key, 7762 sizeof(struct scsi_per_res_key)) != 0) 7763 continue; 7764 7765 found = 1; 7766 lun->per_res[i].registered = 0; 7767 memset(&lun->per_res[i].res_key, 0, 7768 sizeof(struct scsi_per_res_key)); 7769 lun->pr_key_count--; 7770 7771 if (!persis_offset 7772 && i < CTL_MAX_INITIATORS) 7773 lun->pending_sense[i].ua_pending |= 7774 CTL_UA_REG_PREEMPT; 7775 else if (persis_offset 7776 && i >= persis_offset) 7777 lun->pending_sense[i-persis_offset].ua_pending|= 7778 CTL_UA_REG_PREEMPT; 7779 } 7780 mtx_unlock(&softc->ctl_lock); 7781 if (!found) { 7782 free(ctsio->kern_data_ptr, M_CTL); 7783 ctl_set_reservation_conflict(ctsio); 7784 ctl_done((union ctl_io *)ctsio); 7785 return (CTL_RETVAL_COMPLETE); 7786 } 7787 /* send msg to other side */ 7788 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7789 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7790 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7791 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7792 persis_io.pr.pr_info.res_type = type; 7793 memcpy(persis_io.pr.pr_info.sa_res_key, 7794 param->serv_act_res_key, 7795 sizeof(param->serv_act_res_key)); 7796 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7797 &persis_io, sizeof(persis_io), 0)) > 7798 CTL_HA_STATUS_SUCCESS) { 7799 printf("CTL:Persis Out error returned from " 7800 "ctl_ha_msg_send %d\n", isc_retval); 7801 } 7802 } else { 7803 /* Reserved but not all registrants */ 7804 /* sa_res_key is res holder */ 7805 if (memcmp(param->serv_act_res_key, 7806 lun->per_res[lun->pr_res_idx].res_key.key, 7807 sizeof(struct scsi_per_res_key)) == 0) { 7808 /* validate scope and type */ 7809 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7810 SPR_LU_SCOPE) { 7811 ctl_set_invalid_field(/*ctsio*/ ctsio, 7812 /*sks_valid*/ 1, 7813 /*command*/ 1, 7814 /*field*/ 2, 7815 /*bit_valid*/ 1, 7816 /*bit*/ 4); 7817 ctl_done((union ctl_io *)ctsio); 7818 return (1); 7819 } 7820 7821 if (type>8 || type==2 || type==4 || type==0) { 7822 ctl_set_invalid_field(/*ctsio*/ ctsio, 7823 /*sks_valid*/ 1, 7824 /*command*/ 1, 7825 /*field*/ 2, 7826 /*bit_valid*/ 1, 7827 /*bit*/ 0); 7828 ctl_done((union ctl_io *)ctsio); 7829 return (1); 7830 } 7831 7832 /* 7833 * Do the following: 7834 * if sa_res_key != res_key remove all 7835 * registrants w/sa_res_key and generate UA 7836 * for these registrants(Registrations 7837 * Preempted) if it wasn't an exclusive 7838 * reservation generate UA(Reservations 7839 * Preempted) for all other registered nexuses 7840 * if the type has changed. Establish the new 7841 * reservation and holder. If res_key and 7842 * sa_res_key are the same do the above 7843 * except don't unregister the res holder. 7844 */ 7845 7846 /* 7847 * Temporarily unregister so it won't get 7848 * removed or UA generated 7849 */ 7850 lun->per_res[residx].registered = 0; 7851 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7852 if (lun->per_res[i].registered == 0) 7853 continue; 7854 7855 if (memcmp(param->serv_act_res_key, 7856 lun->per_res[i].res_key.key, 7857 sizeof(struct scsi_per_res_key)) == 0) { 7858 lun->per_res[i].registered = 0; 7859 memset(&lun->per_res[i].res_key, 7860 0, 7861 sizeof(struct scsi_per_res_key)); 7862 lun->pr_key_count--; 7863 7864 if (!persis_offset 7865 && i < CTL_MAX_INITIATORS) 7866 lun->pending_sense[i 7867 ].ua_pending |= 7868 CTL_UA_REG_PREEMPT; 7869 else if (persis_offset 7870 && i >= persis_offset) 7871 lun->pending_sense[ 7872 i-persis_offset].ua_pending |= 7873 CTL_UA_REG_PREEMPT; 7874 } else if (type != lun->res_type 7875 && (lun->res_type == SPR_TYPE_WR_EX_RO 7876 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7877 if (!persis_offset 7878 && i < CTL_MAX_INITIATORS) 7879 lun->pending_sense[i 7880 ].ua_pending |= 7881 CTL_UA_RES_RELEASE; 7882 else if (persis_offset 7883 && i >= persis_offset) 7884 lun->pending_sense[ 7885 i-persis_offset 7886 ].ua_pending |= 7887 CTL_UA_RES_RELEASE; 7888 } 7889 } 7890 lun->per_res[residx].registered = 1; 7891 lun->res_type = type; 7892 if (lun->res_type != SPR_TYPE_WR_EX_AR 7893 && lun->res_type != SPR_TYPE_EX_AC_AR) 7894 lun->pr_res_idx = residx; 7895 else 7896 lun->pr_res_idx = 7897 CTL_PR_ALL_REGISTRANTS; 7898 7899 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7900 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7901 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7902 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7903 persis_io.pr.pr_info.res_type = type; 7904 memcpy(persis_io.pr.pr_info.sa_res_key, 7905 param->serv_act_res_key, 7906 sizeof(param->serv_act_res_key)); 7907 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7908 &persis_io, sizeof(persis_io), 0)) > 7909 CTL_HA_STATUS_SUCCESS) { 7910 printf("CTL:Persis Out error returned " 7911 "from ctl_ha_msg_send %d\n", 7912 isc_retval); 7913 } 7914 } else { 7915 /* 7916 * sa_res_key is not the res holder just 7917 * remove registrants 7918 */ 7919 int found=0; 7920 mtx_lock(&softc->ctl_lock); 7921 7922 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7923 if (memcmp(param->serv_act_res_key, 7924 lun->per_res[i].res_key.key, 7925 sizeof(struct scsi_per_res_key)) != 0) 7926 continue; 7927 7928 found = 1; 7929 lun->per_res[i].registered = 0; 7930 memset(&lun->per_res[i].res_key, 0, 7931 sizeof(struct scsi_per_res_key)); 7932 lun->pr_key_count--; 7933 7934 if (!persis_offset 7935 && i < CTL_MAX_INITIATORS) 7936 lun->pending_sense[i].ua_pending |= 7937 CTL_UA_REG_PREEMPT; 7938 else if (persis_offset 7939 && i >= persis_offset) 7940 lun->pending_sense[ 7941 i-persis_offset].ua_pending |= 7942 CTL_UA_REG_PREEMPT; 7943 } 7944 7945 if (!found) { 7946 mtx_unlock(&softc->ctl_lock); 7947 free(ctsio->kern_data_ptr, M_CTL); 7948 ctl_set_reservation_conflict(ctsio); 7949 ctl_done((union ctl_io *)ctsio); 7950 return (1); 7951 } 7952 mtx_unlock(&softc->ctl_lock); 7953 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7954 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7955 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7956 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7957 persis_io.pr.pr_info.res_type = type; 7958 memcpy(persis_io.pr.pr_info.sa_res_key, 7959 param->serv_act_res_key, 7960 sizeof(param->serv_act_res_key)); 7961 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7962 &persis_io, sizeof(persis_io), 0)) > 7963 CTL_HA_STATUS_SUCCESS) { 7964 printf("CTL:Persis Out error returned " 7965 "from ctl_ha_msg_send %d\n", 7966 isc_retval); 7967 } 7968 } 7969 } 7970 7971 lun->PRGeneration++; 7972 7973 return (retval); 7974} 7975 7976static void 7977ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7978{ 7979 int i; 7980 7981 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7982 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7983 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7984 msg->pr.pr_info.sa_res_key, 7985 sizeof(struct scsi_per_res_key)) != 0) { 7986 uint64_t sa_res_key; 7987 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7988 7989 if (sa_res_key == 0) { 7990 /* temporarily unregister this nexus */ 7991 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7992 7993 /* 7994 * Unregister everybody else and build UA for 7995 * them 7996 */ 7997 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7998 if (lun->per_res[i].registered == 0) 7999 continue; 8000 8001 if (!persis_offset 8002 && i < CTL_MAX_INITIATORS) 8003 lun->pending_sense[i].ua_pending |= 8004 CTL_UA_REG_PREEMPT; 8005 else if (persis_offset && i >= persis_offset) 8006 lun->pending_sense[i - 8007 persis_offset].ua_pending |= 8008 CTL_UA_REG_PREEMPT; 8009 lun->per_res[i].registered = 0; 8010 memset(&lun->per_res[i].res_key, 0, 8011 sizeof(struct scsi_per_res_key)); 8012 } 8013 8014 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8015 lun->pr_key_count = 1; 8016 lun->res_type = msg->pr.pr_info.res_type; 8017 if (lun->res_type != SPR_TYPE_WR_EX_AR 8018 && lun->res_type != SPR_TYPE_EX_AC_AR) 8019 lun->pr_res_idx = msg->pr.pr_info.residx; 8020 } else { 8021 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8022 if (memcmp(msg->pr.pr_info.sa_res_key, 8023 lun->per_res[i].res_key.key, 8024 sizeof(struct scsi_per_res_key)) != 0) 8025 continue; 8026 8027 lun->per_res[i].registered = 0; 8028 memset(&lun->per_res[i].res_key, 0, 8029 sizeof(struct scsi_per_res_key)); 8030 lun->pr_key_count--; 8031 8032 if (!persis_offset 8033 && i < persis_offset) 8034 lun->pending_sense[i].ua_pending |= 8035 CTL_UA_REG_PREEMPT; 8036 else if (persis_offset 8037 && i >= persis_offset) 8038 lun->pending_sense[i - 8039 persis_offset].ua_pending |= 8040 CTL_UA_REG_PREEMPT; 8041 } 8042 } 8043 } else { 8044 /* 8045 * Temporarily unregister so it won't get removed 8046 * or UA generated 8047 */ 8048 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8049 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8050 if (lun->per_res[i].registered == 0) 8051 continue; 8052 8053 if (memcmp(msg->pr.pr_info.sa_res_key, 8054 lun->per_res[i].res_key.key, 8055 sizeof(struct scsi_per_res_key)) == 0) { 8056 lun->per_res[i].registered = 0; 8057 memset(&lun->per_res[i].res_key, 0, 8058 sizeof(struct scsi_per_res_key)); 8059 lun->pr_key_count--; 8060 if (!persis_offset 8061 && i < CTL_MAX_INITIATORS) 8062 lun->pending_sense[i].ua_pending |= 8063 CTL_UA_REG_PREEMPT; 8064 else if (persis_offset 8065 && i >= persis_offset) 8066 lun->pending_sense[i - 8067 persis_offset].ua_pending |= 8068 CTL_UA_REG_PREEMPT; 8069 } else if (msg->pr.pr_info.res_type != lun->res_type 8070 && (lun->res_type == SPR_TYPE_WR_EX_RO 8071 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 8072 if (!persis_offset 8073 && i < persis_offset) 8074 lun->pending_sense[i 8075 ].ua_pending |= 8076 CTL_UA_RES_RELEASE; 8077 else if (persis_offset 8078 && i >= persis_offset) 8079 lun->pending_sense[i - 8080 persis_offset].ua_pending |= 8081 CTL_UA_RES_RELEASE; 8082 } 8083 } 8084 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8085 lun->res_type = msg->pr.pr_info.res_type; 8086 if (lun->res_type != SPR_TYPE_WR_EX_AR 8087 && lun->res_type != SPR_TYPE_EX_AC_AR) 8088 lun->pr_res_idx = msg->pr.pr_info.residx; 8089 else 8090 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8091 } 8092 lun->PRGeneration++; 8093 8094} 8095 8096 8097int 8098ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 8099{ 8100 int retval; 8101 int isc_retval; 8102 u_int32_t param_len; 8103 struct scsi_per_res_out *cdb; 8104 struct ctl_lun *lun; 8105 struct scsi_per_res_out_parms* param; 8106 struct ctl_softc *softc; 8107 uint32_t residx; 8108 uint64_t res_key, sa_res_key; 8109 uint8_t type; 8110 union ctl_ha_msg persis_io; 8111 int i; 8112 8113 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 8114 8115 retval = CTL_RETVAL_COMPLETE; 8116 8117 softc = control_softc; 8118 8119 cdb = (struct scsi_per_res_out *)ctsio->cdb; 8120 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8121 8122 /* 8123 * We only support whole-LUN scope. The scope & type are ignored for 8124 * register, register and ignore existing key and clear. 8125 * We sometimes ignore scope and type on preempts too!! 8126 * Verify reservation type here as well. 8127 */ 8128 type = cdb->scope_type & SPR_TYPE_MASK; 8129 if ((cdb->action == SPRO_RESERVE) 8130 || (cdb->action == SPRO_RELEASE)) { 8131 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 8132 ctl_set_invalid_field(/*ctsio*/ ctsio, 8133 /*sks_valid*/ 1, 8134 /*command*/ 1, 8135 /*field*/ 2, 8136 /*bit_valid*/ 1, 8137 /*bit*/ 4); 8138 ctl_done((union ctl_io *)ctsio); 8139 return (CTL_RETVAL_COMPLETE); 8140 } 8141 8142 if (type>8 || type==2 || type==4 || type==0) { 8143 ctl_set_invalid_field(/*ctsio*/ ctsio, 8144 /*sks_valid*/ 1, 8145 /*command*/ 1, 8146 /*field*/ 2, 8147 /*bit_valid*/ 1, 8148 /*bit*/ 0); 8149 ctl_done((union ctl_io *)ctsio); 8150 return (CTL_RETVAL_COMPLETE); 8151 } 8152 } 8153 8154 switch (cdb->action & SPRO_ACTION_MASK) { 8155 case SPRO_REGISTER: 8156 case SPRO_RESERVE: 8157 case SPRO_RELEASE: 8158 case SPRO_CLEAR: 8159 case SPRO_PREEMPT: 8160 case SPRO_REG_IGNO: 8161 break; 8162 case SPRO_REG_MOVE: 8163 case SPRO_PRE_ABO: 8164 default: 8165 ctl_set_invalid_field(/*ctsio*/ ctsio, 8166 /*sks_valid*/ 1, 8167 /*command*/ 1, 8168 /*field*/ 1, 8169 /*bit_valid*/ 1, 8170 /*bit*/ 0); 8171 ctl_done((union ctl_io *)ctsio); 8172 return (CTL_RETVAL_COMPLETE); 8173 break; /* NOTREACHED */ 8174 } 8175 8176 param_len = scsi_4btoul(cdb->length); 8177 8178 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 8179 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 8180 ctsio->kern_data_len = param_len; 8181 ctsio->kern_total_len = param_len; 8182 ctsio->kern_data_resid = 0; 8183 ctsio->kern_rel_offset = 0; 8184 ctsio->kern_sg_entries = 0; 8185 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 8186 ctsio->be_move_done = ctl_config_move_done; 8187 ctl_datamove((union ctl_io *)ctsio); 8188 8189 return (CTL_RETVAL_COMPLETE); 8190 } 8191 8192 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 8193 8194 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8195 res_key = scsi_8btou64(param->res_key.key); 8196 sa_res_key = scsi_8btou64(param->serv_act_res_key); 8197 8198 /* 8199 * Validate the reservation key here except for SPRO_REG_IGNO 8200 * This must be done for all other service actions 8201 */ 8202 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8203 mtx_lock(&softc->ctl_lock); 8204 if (lun->per_res[residx].registered) { 8205 if (memcmp(param->res_key.key, 8206 lun->per_res[residx].res_key.key, 8207 ctl_min(sizeof(param->res_key), 8208 sizeof(lun->per_res[residx].res_key))) != 0) { 8209 /* 8210 * The current key passed in doesn't match 8211 * the one the initiator previously 8212 * registered. 8213 */ 8214 mtx_unlock(&softc->ctl_lock); 8215 free(ctsio->kern_data_ptr, M_CTL); 8216 ctl_set_reservation_conflict(ctsio); 8217 ctl_done((union ctl_io *)ctsio); 8218 return (CTL_RETVAL_COMPLETE); 8219 } 8220 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8221 /* 8222 * We are not registered 8223 */ 8224 mtx_unlock(&softc->ctl_lock); 8225 free(ctsio->kern_data_ptr, M_CTL); 8226 ctl_set_reservation_conflict(ctsio); 8227 ctl_done((union ctl_io *)ctsio); 8228 return (CTL_RETVAL_COMPLETE); 8229 } else if (res_key != 0) { 8230 /* 8231 * We are not registered and trying to register but 8232 * the register key isn't zero. 8233 */ 8234 mtx_unlock(&softc->ctl_lock); 8235 free(ctsio->kern_data_ptr, M_CTL); 8236 ctl_set_reservation_conflict(ctsio); 8237 ctl_done((union ctl_io *)ctsio); 8238 return (CTL_RETVAL_COMPLETE); 8239 } 8240 mtx_unlock(&softc->ctl_lock); 8241 } 8242 8243 switch (cdb->action & SPRO_ACTION_MASK) { 8244 case SPRO_REGISTER: 8245 case SPRO_REG_IGNO: { 8246 8247#if 0 8248 printf("Registration received\n"); 8249#endif 8250 8251 /* 8252 * We don't support any of these options, as we report in 8253 * the read capabilities request (see 8254 * ctl_persistent_reserve_in(), above). 8255 */ 8256 if ((param->flags & SPR_SPEC_I_PT) 8257 || (param->flags & SPR_ALL_TG_PT) 8258 || (param->flags & SPR_APTPL)) { 8259 int bit_ptr; 8260 8261 if (param->flags & SPR_APTPL) 8262 bit_ptr = 0; 8263 else if (param->flags & SPR_ALL_TG_PT) 8264 bit_ptr = 2; 8265 else /* SPR_SPEC_I_PT */ 8266 bit_ptr = 3; 8267 8268 free(ctsio->kern_data_ptr, M_CTL); 8269 ctl_set_invalid_field(ctsio, 8270 /*sks_valid*/ 1, 8271 /*command*/ 0, 8272 /*field*/ 20, 8273 /*bit_valid*/ 1, 8274 /*bit*/ bit_ptr); 8275 ctl_done((union ctl_io *)ctsio); 8276 return (CTL_RETVAL_COMPLETE); 8277 } 8278 8279 mtx_lock(&softc->ctl_lock); 8280 8281 /* 8282 * The initiator wants to clear the 8283 * key/unregister. 8284 */ 8285 if (sa_res_key == 0) { 8286 if ((res_key == 0 8287 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8288 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8289 && !lun->per_res[residx].registered)) { 8290 mtx_unlock(&softc->ctl_lock); 8291 goto done; 8292 } 8293 8294 lun->per_res[residx].registered = 0; 8295 memset(&lun->per_res[residx].res_key, 8296 0, sizeof(lun->per_res[residx].res_key)); 8297 lun->pr_key_count--; 8298 8299 if (residx == lun->pr_res_idx) { 8300 lun->flags &= ~CTL_LUN_PR_RESERVED; 8301 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8302 8303 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8304 || lun->res_type == SPR_TYPE_EX_AC_RO) 8305 && lun->pr_key_count) { 8306 /* 8307 * If the reservation is a registrants 8308 * only type we need to generate a UA 8309 * for other registered inits. The 8310 * sense code should be RESERVATIONS 8311 * RELEASED 8312 */ 8313 8314 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8315 if (lun->per_res[ 8316 i+persis_offset].registered 8317 == 0) 8318 continue; 8319 lun->pending_sense[i 8320 ].ua_pending |= 8321 CTL_UA_RES_RELEASE; 8322 } 8323 } 8324 lun->res_type = 0; 8325 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8326 if (lun->pr_key_count==0) { 8327 lun->flags &= ~CTL_LUN_PR_RESERVED; 8328 lun->res_type = 0; 8329 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8330 } 8331 } 8332 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8333 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8334 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8335 persis_io.pr.pr_info.residx = residx; 8336 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8337 &persis_io, sizeof(persis_io), 0 )) > 8338 CTL_HA_STATUS_SUCCESS) { 8339 printf("CTL:Persis Out error returned from " 8340 "ctl_ha_msg_send %d\n", isc_retval); 8341 } 8342 mtx_unlock(&softc->ctl_lock); 8343 } else /* sa_res_key != 0 */ { 8344 8345 /* 8346 * If we aren't registered currently then increment 8347 * the key count and set the registered flag. 8348 */ 8349 if (!lun->per_res[residx].registered) { 8350 lun->pr_key_count++; 8351 lun->per_res[residx].registered = 1; 8352 } 8353 8354 memcpy(&lun->per_res[residx].res_key, 8355 param->serv_act_res_key, 8356 ctl_min(sizeof(param->serv_act_res_key), 8357 sizeof(lun->per_res[residx].res_key))); 8358 8359 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8360 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8361 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8362 persis_io.pr.pr_info.residx = residx; 8363 memcpy(persis_io.pr.pr_info.sa_res_key, 8364 param->serv_act_res_key, 8365 sizeof(param->serv_act_res_key)); 8366 mtx_unlock(&softc->ctl_lock); 8367 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8368 &persis_io, sizeof(persis_io), 0)) > 8369 CTL_HA_STATUS_SUCCESS) { 8370 printf("CTL:Persis Out error returned from " 8371 "ctl_ha_msg_send %d\n", isc_retval); 8372 } 8373 } 8374 lun->PRGeneration++; 8375 8376 break; 8377 } 8378 case SPRO_RESERVE: 8379#if 0 8380 printf("Reserve executed type %d\n", type); 8381#endif 8382 mtx_lock(&softc->ctl_lock); 8383 if (lun->flags & CTL_LUN_PR_RESERVED) { 8384 /* 8385 * if this isn't the reservation holder and it's 8386 * not a "all registrants" type or if the type is 8387 * different then we have a conflict 8388 */ 8389 if ((lun->pr_res_idx != residx 8390 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8391 || lun->res_type != type) { 8392 mtx_unlock(&softc->ctl_lock); 8393 free(ctsio->kern_data_ptr, M_CTL); 8394 ctl_set_reservation_conflict(ctsio); 8395 ctl_done((union ctl_io *)ctsio); 8396 return (CTL_RETVAL_COMPLETE); 8397 } 8398 mtx_unlock(&softc->ctl_lock); 8399 } else /* create a reservation */ { 8400 /* 8401 * If it's not an "all registrants" type record 8402 * reservation holder 8403 */ 8404 if (type != SPR_TYPE_WR_EX_AR 8405 && type != SPR_TYPE_EX_AC_AR) 8406 lun->pr_res_idx = residx; /* Res holder */ 8407 else 8408 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8409 8410 lun->flags |= CTL_LUN_PR_RESERVED; 8411 lun->res_type = type; 8412 8413 mtx_unlock(&softc->ctl_lock); 8414 8415 /* send msg to other side */ 8416 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8417 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8418 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8419 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8420 persis_io.pr.pr_info.res_type = type; 8421 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8422 &persis_io, sizeof(persis_io), 0)) > 8423 CTL_HA_STATUS_SUCCESS) { 8424 printf("CTL:Persis Out error returned from " 8425 "ctl_ha_msg_send %d\n", isc_retval); 8426 } 8427 } 8428 break; 8429 8430 case SPRO_RELEASE: 8431 mtx_lock(&softc->ctl_lock); 8432 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8433 /* No reservation exists return good status */ 8434 mtx_unlock(&softc->ctl_lock); 8435 goto done; 8436 } 8437 /* 8438 * Is this nexus a reservation holder? 8439 */ 8440 if (lun->pr_res_idx != residx 8441 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8442 /* 8443 * not a res holder return good status but 8444 * do nothing 8445 */ 8446 mtx_unlock(&softc->ctl_lock); 8447 goto done; 8448 } 8449 8450 if (lun->res_type != type) { 8451 mtx_unlock(&softc->ctl_lock); 8452 free(ctsio->kern_data_ptr, M_CTL); 8453 ctl_set_illegal_pr_release(ctsio); 8454 ctl_done((union ctl_io *)ctsio); 8455 return (CTL_RETVAL_COMPLETE); 8456 } 8457 8458 /* okay to release */ 8459 lun->flags &= ~CTL_LUN_PR_RESERVED; 8460 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8461 lun->res_type = 0; 8462 8463 /* 8464 * if this isn't an exclusive access 8465 * res generate UA for all other 8466 * registrants. 8467 */ 8468 if (type != SPR_TYPE_EX_AC 8469 && type != SPR_TYPE_WR_EX) { 8470 /* 8471 * temporarily unregister so we don't generate UA 8472 */ 8473 lun->per_res[residx].registered = 0; 8474 8475 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8476 if (lun->per_res[i+persis_offset].registered 8477 == 0) 8478 continue; 8479 lun->pending_sense[i].ua_pending |= 8480 CTL_UA_RES_RELEASE; 8481 } 8482 8483 lun->per_res[residx].registered = 1; 8484 } 8485 mtx_unlock(&softc->ctl_lock); 8486 /* Send msg to other side */ 8487 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8488 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8489 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8490 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8491 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8492 printf("CTL:Persis Out error returned from " 8493 "ctl_ha_msg_send %d\n", isc_retval); 8494 } 8495 break; 8496 8497 case SPRO_CLEAR: 8498 /* send msg to other side */ 8499 8500 mtx_lock(&softc->ctl_lock); 8501 lun->flags &= ~CTL_LUN_PR_RESERVED; 8502 lun->res_type = 0; 8503 lun->pr_key_count = 0; 8504 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8505 8506 8507 memset(&lun->per_res[residx].res_key, 8508 0, sizeof(lun->per_res[residx].res_key)); 8509 lun->per_res[residx].registered = 0; 8510 8511 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8512 if (lun->per_res[i].registered) { 8513 if (!persis_offset && i < CTL_MAX_INITIATORS) 8514 lun->pending_sense[i].ua_pending |= 8515 CTL_UA_RES_PREEMPT; 8516 else if (persis_offset && i >= persis_offset) 8517 lun->pending_sense[i-persis_offset 8518 ].ua_pending |= CTL_UA_RES_PREEMPT; 8519 8520 memset(&lun->per_res[i].res_key, 8521 0, sizeof(struct scsi_per_res_key)); 8522 lun->per_res[i].registered = 0; 8523 } 8524 lun->PRGeneration++; 8525 mtx_unlock(&softc->ctl_lock); 8526 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8527 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8528 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8529 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8530 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8531 printf("CTL:Persis Out error returned from " 8532 "ctl_ha_msg_send %d\n", isc_retval); 8533 } 8534 break; 8535 8536 case SPRO_PREEMPT: { 8537 int nretval; 8538 8539 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8540 residx, ctsio, cdb, param); 8541 if (nretval != 0) 8542 return (CTL_RETVAL_COMPLETE); 8543 break; 8544 } 8545 case SPRO_REG_MOVE: 8546 case SPRO_PRE_ABO: 8547 default: 8548 free(ctsio->kern_data_ptr, M_CTL); 8549 ctl_set_invalid_field(/*ctsio*/ ctsio, 8550 /*sks_valid*/ 1, 8551 /*command*/ 1, 8552 /*field*/ 1, 8553 /*bit_valid*/ 1, 8554 /*bit*/ 0); 8555 ctl_done((union ctl_io *)ctsio); 8556 return (CTL_RETVAL_COMPLETE); 8557 break; /* NOTREACHED */ 8558 } 8559 8560done: 8561 free(ctsio->kern_data_ptr, M_CTL); 8562 ctl_set_success(ctsio); 8563 ctl_done((union ctl_io *)ctsio); 8564 8565 return (retval); 8566} 8567 8568/* 8569 * This routine is for handling a message from the other SC pertaining to 8570 * persistent reserve out. All the error checking will have been done 8571 * so only perorming the action need be done here to keep the two 8572 * in sync. 8573 */ 8574static void 8575ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8576{ 8577 struct ctl_lun *lun; 8578 struct ctl_softc *softc; 8579 int i; 8580 uint32_t targ_lun; 8581 8582 softc = control_softc; 8583 8584 mtx_lock(&softc->ctl_lock); 8585 8586 targ_lun = msg->hdr.nexus.targ_lun; 8587 if (msg->hdr.nexus.lun_map_fn != NULL) 8588 targ_lun = msg->hdr.nexus.lun_map_fn(msg->hdr.nexus.lun_map_arg, targ_lun); 8589 lun = softc->ctl_luns[targ_lun]; 8590 switch(msg->pr.pr_info.action) { 8591 case CTL_PR_REG_KEY: 8592 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8593 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8594 lun->pr_key_count++; 8595 } 8596 lun->PRGeneration++; 8597 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8598 msg->pr.pr_info.sa_res_key, 8599 sizeof(struct scsi_per_res_key)); 8600 break; 8601 8602 case CTL_PR_UNREG_KEY: 8603 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8604 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8605 0, sizeof(struct scsi_per_res_key)); 8606 lun->pr_key_count--; 8607 8608 /* XXX Need to see if the reservation has been released */ 8609 /* if so do we need to generate UA? */ 8610 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8611 lun->flags &= ~CTL_LUN_PR_RESERVED; 8612 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8613 8614 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8615 || lun->res_type == SPR_TYPE_EX_AC_RO) 8616 && lun->pr_key_count) { 8617 /* 8618 * If the reservation is a registrants 8619 * only type we need to generate a UA 8620 * for other registered inits. The 8621 * sense code should be RESERVATIONS 8622 * RELEASED 8623 */ 8624 8625 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8626 if (lun->per_res[i+ 8627 persis_offset].registered == 0) 8628 continue; 8629 8630 lun->pending_sense[i 8631 ].ua_pending |= 8632 CTL_UA_RES_RELEASE; 8633 } 8634 } 8635 lun->res_type = 0; 8636 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8637 if (lun->pr_key_count==0) { 8638 lun->flags &= ~CTL_LUN_PR_RESERVED; 8639 lun->res_type = 0; 8640 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8641 } 8642 } 8643 lun->PRGeneration++; 8644 break; 8645 8646 case CTL_PR_RESERVE: 8647 lun->flags |= CTL_LUN_PR_RESERVED; 8648 lun->res_type = msg->pr.pr_info.res_type; 8649 lun->pr_res_idx = msg->pr.pr_info.residx; 8650 8651 break; 8652 8653 case CTL_PR_RELEASE: 8654 /* 8655 * if this isn't an exclusive access res generate UA for all 8656 * other registrants. 8657 */ 8658 if (lun->res_type != SPR_TYPE_EX_AC 8659 && lun->res_type != SPR_TYPE_WR_EX) { 8660 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8661 if (lun->per_res[i+persis_offset].registered) 8662 lun->pending_sense[i].ua_pending |= 8663 CTL_UA_RES_RELEASE; 8664 } 8665 8666 lun->flags &= ~CTL_LUN_PR_RESERVED; 8667 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8668 lun->res_type = 0; 8669 break; 8670 8671 case CTL_PR_PREEMPT: 8672 ctl_pro_preempt_other(lun, msg); 8673 break; 8674 case CTL_PR_CLEAR: 8675 lun->flags &= ~CTL_LUN_PR_RESERVED; 8676 lun->res_type = 0; 8677 lun->pr_key_count = 0; 8678 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8679 8680 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8681 if (lun->per_res[i].registered == 0) 8682 continue; 8683 if (!persis_offset 8684 && i < CTL_MAX_INITIATORS) 8685 lun->pending_sense[i].ua_pending |= 8686 CTL_UA_RES_PREEMPT; 8687 else if (persis_offset 8688 && i >= persis_offset) 8689 lun->pending_sense[i-persis_offset].ua_pending|= 8690 CTL_UA_RES_PREEMPT; 8691 memset(&lun->per_res[i].res_key, 0, 8692 sizeof(struct scsi_per_res_key)); 8693 lun->per_res[i].registered = 0; 8694 } 8695 lun->PRGeneration++; 8696 break; 8697 } 8698 8699 mtx_unlock(&softc->ctl_lock); 8700} 8701 8702int 8703ctl_read_write(struct ctl_scsiio *ctsio) 8704{ 8705 struct ctl_lun *lun; 8706 struct ctl_lba_len_flags *lbalen; 8707 uint64_t lba; 8708 uint32_t num_blocks; 8709 int reladdr, fua, dpo, ebp; 8710 int retval; 8711 int isread; 8712 8713 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8714 8715 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8716 8717 reladdr = 0; 8718 fua = 0; 8719 dpo = 0; 8720 ebp = 0; 8721 8722 retval = CTL_RETVAL_COMPLETE; 8723 8724 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8725 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8726 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8727 uint32_t residx; 8728 8729 /* 8730 * XXX KDM need a lock here. 8731 */ 8732 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8733 if ((lun->res_type == SPR_TYPE_EX_AC 8734 && residx != lun->pr_res_idx) 8735 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8736 || lun->res_type == SPR_TYPE_EX_AC_AR) 8737 && !lun->per_res[residx].registered)) { 8738 ctl_set_reservation_conflict(ctsio); 8739 ctl_done((union ctl_io *)ctsio); 8740 return (CTL_RETVAL_COMPLETE); 8741 } 8742 } 8743 8744 switch (ctsio->cdb[0]) { 8745 case READ_6: 8746 case WRITE_6: { 8747 struct scsi_rw_6 *cdb; 8748 8749 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8750 8751 lba = scsi_3btoul(cdb->addr); 8752 /* only 5 bits are valid in the most significant address byte */ 8753 lba &= 0x1fffff; 8754 num_blocks = cdb->length; 8755 /* 8756 * This is correct according to SBC-2. 8757 */ 8758 if (num_blocks == 0) 8759 num_blocks = 256; 8760 break; 8761 } 8762 case READ_10: 8763 case WRITE_10: { 8764 struct scsi_rw_10 *cdb; 8765 8766 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8767 8768 if (cdb->byte2 & SRW10_RELADDR) 8769 reladdr = 1; 8770 if (cdb->byte2 & SRW10_FUA) 8771 fua = 1; 8772 if (cdb->byte2 & SRW10_DPO) 8773 dpo = 1; 8774 8775 if ((cdb->opcode == WRITE_10) 8776 && (cdb->byte2 & SRW10_EBP)) 8777 ebp = 1; 8778 8779 lba = scsi_4btoul(cdb->addr); 8780 num_blocks = scsi_2btoul(cdb->length); 8781 break; 8782 } 8783 case WRITE_VERIFY_10: { 8784 struct scsi_write_verify_10 *cdb; 8785 8786 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8787 8788 /* 8789 * XXX KDM we should do actual write verify support at some 8790 * point. This is obviously fake, we're just translating 8791 * things to a write. So we don't even bother checking the 8792 * BYTCHK field, since we don't do any verification. If 8793 * the user asks for it, we'll just pretend we did it. 8794 */ 8795 if (cdb->byte2 & SWV_DPO) 8796 dpo = 1; 8797 8798 lba = scsi_4btoul(cdb->addr); 8799 num_blocks = scsi_2btoul(cdb->length); 8800 break; 8801 } 8802 case READ_12: 8803 case WRITE_12: { 8804 struct scsi_rw_12 *cdb; 8805 8806 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8807 8808 if (cdb->byte2 & SRW12_RELADDR) 8809 reladdr = 1; 8810 if (cdb->byte2 & SRW12_FUA) 8811 fua = 1; 8812 if (cdb->byte2 & SRW12_DPO) 8813 dpo = 1; 8814 lba = scsi_4btoul(cdb->addr); 8815 num_blocks = scsi_4btoul(cdb->length); 8816 break; 8817 } 8818 case WRITE_VERIFY_12: { 8819 struct scsi_write_verify_12 *cdb; 8820 8821 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8822 8823 if (cdb->byte2 & SWV_DPO) 8824 dpo = 1; 8825 8826 lba = scsi_4btoul(cdb->addr); 8827 num_blocks = scsi_4btoul(cdb->length); 8828 8829 break; 8830 } 8831 case READ_16: 8832 case WRITE_16: { 8833 struct scsi_rw_16 *cdb; 8834 8835 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8836 8837 if (cdb->byte2 & SRW12_RELADDR) 8838 reladdr = 1; 8839 if (cdb->byte2 & SRW12_FUA) 8840 fua = 1; 8841 if (cdb->byte2 & SRW12_DPO) 8842 dpo = 1; 8843 8844 lba = scsi_8btou64(cdb->addr); 8845 num_blocks = scsi_4btoul(cdb->length); 8846 break; 8847 } 8848 case WRITE_VERIFY_16: { 8849 struct scsi_write_verify_16 *cdb; 8850 8851 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8852 8853 if (cdb->byte2 & SWV_DPO) 8854 dpo = 1; 8855 8856 lba = scsi_8btou64(cdb->addr); 8857 num_blocks = scsi_4btoul(cdb->length); 8858 break; 8859 } 8860 default: 8861 /* 8862 * We got a command we don't support. This shouldn't 8863 * happen, commands should be filtered out above us. 8864 */ 8865 ctl_set_invalid_opcode(ctsio); 8866 ctl_done((union ctl_io *)ctsio); 8867 8868 return (CTL_RETVAL_COMPLETE); 8869 break; /* NOTREACHED */ 8870 } 8871 8872 /* 8873 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8874 * interesting for us, but if RAIDCore is in write-back mode, 8875 * getting it to do write-through for a particular transaction may 8876 * not be possible. 8877 */ 8878 /* 8879 * We don't support relative addressing. That also requires 8880 * supporting linked commands, which we don't do. 8881 */ 8882 if (reladdr != 0) { 8883 ctl_set_invalid_field(ctsio, 8884 /*sks_valid*/ 1, 8885 /*command*/ 1, 8886 /*field*/ 1, 8887 /*bit_valid*/ 1, 8888 /*bit*/ 0); 8889 ctl_done((union ctl_io *)ctsio); 8890 return (CTL_RETVAL_COMPLETE); 8891 } 8892 8893 /* 8894 * The first check is to make sure we're in bounds, the second 8895 * check is to catch wrap-around problems. If the lba + num blocks 8896 * is less than the lba, then we've wrapped around and the block 8897 * range is invalid anyway. 8898 */ 8899 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8900 || ((lba + num_blocks) < lba)) { 8901 ctl_set_lba_out_of_range(ctsio); 8902 ctl_done((union ctl_io *)ctsio); 8903 return (CTL_RETVAL_COMPLETE); 8904 } 8905 8906 /* 8907 * According to SBC-3, a transfer length of 0 is not an error. 8908 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8909 * translates to 256 blocks for those commands. 8910 */ 8911 if (num_blocks == 0) { 8912 ctl_set_success(ctsio); 8913 ctl_done((union ctl_io *)ctsio); 8914 return (CTL_RETVAL_COMPLETE); 8915 } 8916 8917 lbalen = (struct ctl_lba_len_flags *) 8918 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8919 lbalen->lba = lba; 8920 lbalen->len = num_blocks; 8921 lbalen->flags = isread ? CTL_LLF_READ : CTL_LLF_WRITE; 8922 8923 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 8924 ctsio->kern_rel_offset = 0; 8925 8926 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8927 8928 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8929 8930 return (retval); 8931} 8932 8933static int 8934ctl_cnw_cont(union ctl_io *io) 8935{ 8936 struct ctl_scsiio *ctsio; 8937 struct ctl_lun *lun; 8938 struct ctl_lba_len_flags *lbalen; 8939 int retval; 8940 8941 ctsio = &io->scsiio; 8942 ctsio->io_hdr.status = CTL_STATUS_NONE; 8943 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_CONT; 8944 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8945 lbalen = (struct ctl_lba_len_flags *) 8946 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8947 lbalen->flags = CTL_LLF_WRITE; 8948 8949 CTL_DEBUG_PRINT(("ctl_cnw_cont: calling data_submit()\n")); 8950 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8951 return (retval); 8952} 8953 8954int 8955ctl_cnw(struct ctl_scsiio *ctsio) 8956{ 8957 struct ctl_lun *lun; 8958 struct ctl_lba_len_flags *lbalen; 8959 uint64_t lba; 8960 uint32_t num_blocks; 8961 int fua, dpo; 8962 int retval; 8963 8964 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8965 8966 CTL_DEBUG_PRINT(("ctl_cnw: command: %#x\n", ctsio->cdb[0])); 8967 8968 fua = 0; 8969 dpo = 0; 8970 8971 retval = CTL_RETVAL_COMPLETE; 8972 8973 switch (ctsio->cdb[0]) { 8974 case COMPARE_AND_WRITE: { 8975 struct scsi_compare_and_write *cdb; 8976 8977 cdb = (struct scsi_compare_and_write *)ctsio->cdb; 8978 8979 if (cdb->byte2 & SRW10_FUA) 8980 fua = 1; 8981 if (cdb->byte2 & SRW10_DPO) 8982 dpo = 1; 8983 lba = scsi_8btou64(cdb->addr); 8984 num_blocks = cdb->length; 8985 break; 8986 } 8987 default: 8988 /* 8989 * We got a command we don't support. This shouldn't 8990 * happen, commands should be filtered out above us. 8991 */ 8992 ctl_set_invalid_opcode(ctsio); 8993 ctl_done((union ctl_io *)ctsio); 8994 8995 return (CTL_RETVAL_COMPLETE); 8996 break; /* NOTREACHED */ 8997 } 8998 8999 /* 9000 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 9001 * interesting for us, but if RAIDCore is in write-back mode, 9002 * getting it to do write-through for a particular transaction may 9003 * not be possible. 9004 */ 9005 9006 /* 9007 * The first check is to make sure we're in bounds, the second 9008 * check is to catch wrap-around problems. If the lba + num blocks 9009 * is less than the lba, then we've wrapped around and the block 9010 * range is invalid anyway. 9011 */ 9012 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9013 || ((lba + num_blocks) < lba)) { 9014 ctl_set_lba_out_of_range(ctsio); 9015 ctl_done((union ctl_io *)ctsio); 9016 return (CTL_RETVAL_COMPLETE); 9017 } 9018 9019 /* 9020 * According to SBC-3, a transfer length of 0 is not an error. 9021 */ 9022 if (num_blocks == 0) { 9023 ctl_set_success(ctsio); 9024 ctl_done((union ctl_io *)ctsio); 9025 return (CTL_RETVAL_COMPLETE); 9026 } 9027 9028 ctsio->kern_total_len = 2 * num_blocks * lun->be_lun->blocksize; 9029 ctsio->kern_rel_offset = 0; 9030 9031 /* 9032 * Set the IO_CONT flag, so that if this I/O gets passed to 9033 * ctl_data_submit_done(), it'll get passed back to 9034 * ctl_ctl_cnw_cont() for further processing. 9035 */ 9036 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 9037 ctsio->io_cont = ctl_cnw_cont; 9038 9039 lbalen = (struct ctl_lba_len_flags *) 9040 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9041 lbalen->lba = lba; 9042 lbalen->len = num_blocks; 9043 lbalen->flags = CTL_LLF_COMPARE; 9044 9045 CTL_DEBUG_PRINT(("ctl_cnw: calling data_submit()\n")); 9046 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9047 return (retval); 9048} 9049 9050int 9051ctl_verify(struct ctl_scsiio *ctsio) 9052{ 9053 struct ctl_lun *lun; 9054 struct ctl_lba_len_flags *lbalen; 9055 uint64_t lba; 9056 uint32_t num_blocks; 9057 int bytchk, dpo; 9058 int retval; 9059 9060 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9061 9062 CTL_DEBUG_PRINT(("ctl_verify: command: %#x\n", ctsio->cdb[0])); 9063 9064 bytchk = 0; 9065 dpo = 0; 9066 retval = CTL_RETVAL_COMPLETE; 9067 9068 switch (ctsio->cdb[0]) { 9069 case VERIFY_10: { 9070 struct scsi_verify_10 *cdb; 9071 9072 cdb = (struct scsi_verify_10 *)ctsio->cdb; 9073 if (cdb->byte2 & SVFY_BYTCHK) 9074 bytchk = 1; 9075 if (cdb->byte2 & SVFY_DPO) 9076 dpo = 1; 9077 lba = scsi_4btoul(cdb->addr); 9078 num_blocks = scsi_2btoul(cdb->length); 9079 break; 9080 } 9081 case VERIFY_12: { 9082 struct scsi_verify_12 *cdb; 9083 9084 cdb = (struct scsi_verify_12 *)ctsio->cdb; 9085 if (cdb->byte2 & SVFY_BYTCHK) 9086 bytchk = 1; 9087 if (cdb->byte2 & SVFY_DPO) 9088 dpo = 1; 9089 lba = scsi_4btoul(cdb->addr); 9090 num_blocks = scsi_4btoul(cdb->length); 9091 break; 9092 } 9093 case VERIFY_16: { 9094 struct scsi_rw_16 *cdb; 9095 9096 cdb = (struct scsi_rw_16 *)ctsio->cdb; 9097 if (cdb->byte2 & SVFY_BYTCHK) 9098 bytchk = 1; 9099 if (cdb->byte2 & SVFY_DPO) 9100 dpo = 1; 9101 lba = scsi_8btou64(cdb->addr); 9102 num_blocks = scsi_4btoul(cdb->length); 9103 break; 9104 } 9105 default: 9106 /* 9107 * We got a command we don't support. This shouldn't 9108 * happen, commands should be filtered out above us. 9109 */ 9110 ctl_set_invalid_opcode(ctsio); 9111 ctl_done((union ctl_io *)ctsio); 9112 return (CTL_RETVAL_COMPLETE); 9113 } 9114 9115 /* 9116 * The first check is to make sure we're in bounds, the second 9117 * check is to catch wrap-around problems. If the lba + num blocks 9118 * is less than the lba, then we've wrapped around and the block 9119 * range is invalid anyway. 9120 */ 9121 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9122 || ((lba + num_blocks) < lba)) { 9123 ctl_set_lba_out_of_range(ctsio); 9124 ctl_done((union ctl_io *)ctsio); 9125 return (CTL_RETVAL_COMPLETE); 9126 } 9127 9128 /* 9129 * According to SBC-3, a transfer length of 0 is not an error. 9130 */ 9131 if (num_blocks == 0) { 9132 ctl_set_success(ctsio); 9133 ctl_done((union ctl_io *)ctsio); 9134 return (CTL_RETVAL_COMPLETE); 9135 } 9136 9137 lbalen = (struct ctl_lba_len_flags *) 9138 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9139 lbalen->lba = lba; 9140 lbalen->len = num_blocks; 9141 if (bytchk) { 9142 lbalen->flags = CTL_LLF_COMPARE; 9143 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 9144 } else { 9145 lbalen->flags = CTL_LLF_VERIFY; 9146 ctsio->kern_total_len = 0; 9147 } 9148 ctsio->kern_rel_offset = 0; 9149 9150 CTL_DEBUG_PRINT(("ctl_verify: calling data_submit()\n")); 9151 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9152 return (retval); 9153} 9154 9155int 9156ctl_report_luns(struct ctl_scsiio *ctsio) 9157{ 9158 struct scsi_report_luns *cdb; 9159 struct scsi_report_luns_data *lun_data; 9160 struct ctl_lun *lun, *request_lun; 9161 int num_luns, retval; 9162 uint32_t alloc_len, lun_datalen; 9163 int num_filled, well_known; 9164 uint32_t initidx, targ_lun_id, lun_id; 9165 9166 retval = CTL_RETVAL_COMPLETE; 9167 well_known = 0; 9168 9169 cdb = (struct scsi_report_luns *)ctsio->cdb; 9170 9171 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 9172 9173 mtx_lock(&control_softc->ctl_lock); 9174 num_luns = control_softc->num_luns; 9175 mtx_unlock(&control_softc->ctl_lock); 9176 9177 switch (cdb->select_report) { 9178 case RPL_REPORT_DEFAULT: 9179 case RPL_REPORT_ALL: 9180 break; 9181 case RPL_REPORT_WELLKNOWN: 9182 well_known = 1; 9183 num_luns = 0; 9184 break; 9185 default: 9186 ctl_set_invalid_field(ctsio, 9187 /*sks_valid*/ 1, 9188 /*command*/ 1, 9189 /*field*/ 2, 9190 /*bit_valid*/ 0, 9191 /*bit*/ 0); 9192 ctl_done((union ctl_io *)ctsio); 9193 return (retval); 9194 break; /* NOTREACHED */ 9195 } 9196 9197 alloc_len = scsi_4btoul(cdb->length); 9198 /* 9199 * The initiator has to allocate at least 16 bytes for this request, 9200 * so he can at least get the header and the first LUN. Otherwise 9201 * we reject the request (per SPC-3 rev 14, section 6.21). 9202 */ 9203 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 9204 sizeof(struct scsi_report_luns_lundata))) { 9205 ctl_set_invalid_field(ctsio, 9206 /*sks_valid*/ 1, 9207 /*command*/ 1, 9208 /*field*/ 6, 9209 /*bit_valid*/ 0, 9210 /*bit*/ 0); 9211 ctl_done((union ctl_io *)ctsio); 9212 return (retval); 9213 } 9214 9215 request_lun = (struct ctl_lun *) 9216 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9217 9218 lun_datalen = sizeof(*lun_data) + 9219 (num_luns * sizeof(struct scsi_report_luns_lundata)); 9220 9221 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 9222 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 9223 ctsio->kern_sg_entries = 0; 9224 9225 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9226 9227 mtx_lock(&control_softc->ctl_lock); 9228 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 9229 lun_id = targ_lun_id; 9230 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 9231 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 9232 if (lun_id >= CTL_MAX_LUNS) 9233 continue; 9234 lun = control_softc->ctl_luns[lun_id]; 9235 if (lun == NULL) 9236 continue; 9237 9238 if (targ_lun_id <= 0xff) { 9239 /* 9240 * Peripheral addressing method, bus number 0. 9241 */ 9242 lun_data->luns[num_filled].lundata[0] = 9243 RPL_LUNDATA_ATYP_PERIPH; 9244 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 9245 num_filled++; 9246 } else if (targ_lun_id <= 0x3fff) { 9247 /* 9248 * Flat addressing method. 9249 */ 9250 lun_data->luns[num_filled].lundata[0] = 9251 RPL_LUNDATA_ATYP_FLAT | 9252 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 9253#ifdef OLDCTLHEADERS 9254 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 9255 (targ_lun_id & SRLD_BUS_LUN_MASK); 9256#endif 9257 lun_data->luns[num_filled].lundata[1] = 9258#ifdef OLDCTLHEADERS 9259 targ_lun_id >> SRLD_BUS_LUN_BITS; 9260#endif 9261 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 9262 num_filled++; 9263 } else { 9264 printf("ctl_report_luns: bogus LUN number %jd, " 9265 "skipping\n", (intmax_t)targ_lun_id); 9266 } 9267 /* 9268 * According to SPC-3, rev 14 section 6.21: 9269 * 9270 * "The execution of a REPORT LUNS command to any valid and 9271 * installed logical unit shall clear the REPORTED LUNS DATA 9272 * HAS CHANGED unit attention condition for all logical 9273 * units of that target with respect to the requesting 9274 * initiator. A valid and installed logical unit is one 9275 * having a PERIPHERAL QUALIFIER of 000b in the standard 9276 * INQUIRY data (see 6.4.2)." 9277 * 9278 * If request_lun is NULL, the LUN this report luns command 9279 * was issued to is either disabled or doesn't exist. In that 9280 * case, we shouldn't clear any pending lun change unit 9281 * attention. 9282 */ 9283 if (request_lun != NULL) 9284 lun->pending_sense[initidx].ua_pending &= 9285 ~CTL_UA_LUN_CHANGE; 9286 } 9287 mtx_unlock(&control_softc->ctl_lock); 9288 9289 /* 9290 * It's quite possible that we've returned fewer LUNs than we allocated 9291 * space for. Trim it. 9292 */ 9293 lun_datalen = sizeof(*lun_data) + 9294 (num_filled * sizeof(struct scsi_report_luns_lundata)); 9295 9296 if (lun_datalen < alloc_len) { 9297 ctsio->residual = alloc_len - lun_datalen; 9298 ctsio->kern_data_len = lun_datalen; 9299 ctsio->kern_total_len = lun_datalen; 9300 } else { 9301 ctsio->residual = 0; 9302 ctsio->kern_data_len = alloc_len; 9303 ctsio->kern_total_len = alloc_len; 9304 } 9305 ctsio->kern_data_resid = 0; 9306 ctsio->kern_rel_offset = 0; 9307 ctsio->kern_sg_entries = 0; 9308 9309 /* 9310 * We set this to the actual data length, regardless of how much 9311 * space we actually have to return results. If the user looks at 9312 * this value, he'll know whether or not he allocated enough space 9313 * and reissue the command if necessary. We don't support well 9314 * known logical units, so if the user asks for that, return none. 9315 */ 9316 scsi_ulto4b(lun_datalen - 8, lun_data->length); 9317 9318 /* 9319 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 9320 * this request. 9321 */ 9322 ctsio->scsi_status = SCSI_STATUS_OK; 9323 9324 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9325 ctsio->be_move_done = ctl_config_move_done; 9326 ctl_datamove((union ctl_io *)ctsio); 9327 9328 return (retval); 9329} 9330 9331int 9332ctl_request_sense(struct ctl_scsiio *ctsio) 9333{ 9334 struct scsi_request_sense *cdb; 9335 struct scsi_sense_data *sense_ptr; 9336 struct ctl_lun *lun; 9337 uint32_t initidx; 9338 int have_error; 9339 scsi_sense_data_type sense_format; 9340 9341 cdb = (struct scsi_request_sense *)ctsio->cdb; 9342 9343 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9344 9345 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9346 9347 /* 9348 * Determine which sense format the user wants. 9349 */ 9350 if (cdb->byte2 & SRS_DESC) 9351 sense_format = SSD_TYPE_DESC; 9352 else 9353 sense_format = SSD_TYPE_FIXED; 9354 9355 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9356 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9357 ctsio->kern_sg_entries = 0; 9358 9359 /* 9360 * struct scsi_sense_data, which is currently set to 256 bytes, is 9361 * larger than the largest allowed value for the length field in the 9362 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9363 */ 9364 ctsio->residual = 0; 9365 ctsio->kern_data_len = cdb->length; 9366 ctsio->kern_total_len = cdb->length; 9367 9368 ctsio->kern_data_resid = 0; 9369 ctsio->kern_rel_offset = 0; 9370 ctsio->kern_sg_entries = 0; 9371 9372 /* 9373 * If we don't have a LUN, we don't have any pending sense. 9374 */ 9375 if (lun == NULL) 9376 goto no_sense; 9377 9378 have_error = 0; 9379 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9380 /* 9381 * Check for pending sense, and then for pending unit attentions. 9382 * Pending sense gets returned first, then pending unit attentions. 9383 */ 9384 mtx_lock(&lun->ctl_softc->ctl_lock); 9385 if (ctl_is_set(lun->have_ca, initidx)) { 9386 scsi_sense_data_type stored_format; 9387 9388 /* 9389 * Check to see which sense format was used for the stored 9390 * sense data. 9391 */ 9392 stored_format = scsi_sense_type( 9393 &lun->pending_sense[initidx].sense); 9394 9395 /* 9396 * If the user requested a different sense format than the 9397 * one we stored, then we need to convert it to the other 9398 * format. If we're going from descriptor to fixed format 9399 * sense data, we may lose things in translation, depending 9400 * on what options were used. 9401 * 9402 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9403 * for some reason we'll just copy it out as-is. 9404 */ 9405 if ((stored_format == SSD_TYPE_FIXED) 9406 && (sense_format == SSD_TYPE_DESC)) 9407 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9408 &lun->pending_sense[initidx].sense, 9409 (struct scsi_sense_data_desc *)sense_ptr); 9410 else if ((stored_format == SSD_TYPE_DESC) 9411 && (sense_format == SSD_TYPE_FIXED)) 9412 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9413 &lun->pending_sense[initidx].sense, 9414 (struct scsi_sense_data_fixed *)sense_ptr); 9415 else 9416 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9417 ctl_min(sizeof(*sense_ptr), 9418 sizeof(lun->pending_sense[initidx].sense))); 9419 9420 ctl_clear_mask(lun->have_ca, initidx); 9421 have_error = 1; 9422 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9423 ctl_ua_type ua_type; 9424 9425 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9426 sense_ptr, sense_format); 9427 if (ua_type != CTL_UA_NONE) { 9428 have_error = 1; 9429 /* We're reporting this UA, so clear it */ 9430 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9431 } 9432 } 9433 mtx_unlock(&lun->ctl_softc->ctl_lock); 9434 9435 /* 9436 * We already have a pending error, return it. 9437 */ 9438 if (have_error != 0) { 9439 /* 9440 * We report the SCSI status as OK, since the status of the 9441 * request sense command itself is OK. 9442 */ 9443 ctsio->scsi_status = SCSI_STATUS_OK; 9444 9445 /* 9446 * We report 0 for the sense length, because we aren't doing 9447 * autosense in this case. We're reporting sense as 9448 * parameter data. 9449 */ 9450 ctsio->sense_len = 0; 9451 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9452 ctsio->be_move_done = ctl_config_move_done; 9453 ctl_datamove((union ctl_io *)ctsio); 9454 9455 return (CTL_RETVAL_COMPLETE); 9456 } 9457 9458no_sense: 9459 9460 /* 9461 * No sense information to report, so we report that everything is 9462 * okay. 9463 */ 9464 ctl_set_sense_data(sense_ptr, 9465 lun, 9466 sense_format, 9467 /*current_error*/ 1, 9468 /*sense_key*/ SSD_KEY_NO_SENSE, 9469 /*asc*/ 0x00, 9470 /*ascq*/ 0x00, 9471 SSD_ELEM_NONE); 9472 9473 ctsio->scsi_status = SCSI_STATUS_OK; 9474 9475 /* 9476 * We report 0 for the sense length, because we aren't doing 9477 * autosense in this case. We're reporting sense as parameter data. 9478 */ 9479 ctsio->sense_len = 0; 9480 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9481 ctsio->be_move_done = ctl_config_move_done; 9482 ctl_datamove((union ctl_io *)ctsio); 9483 9484 return (CTL_RETVAL_COMPLETE); 9485} 9486 9487int 9488ctl_tur(struct ctl_scsiio *ctsio) 9489{ 9490 struct ctl_lun *lun; 9491 9492 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9493 9494 CTL_DEBUG_PRINT(("ctl_tur\n")); 9495 9496 if (lun == NULL) 9497 return (EINVAL); 9498 9499 ctsio->scsi_status = SCSI_STATUS_OK; 9500 ctsio->io_hdr.status = CTL_SUCCESS; 9501 9502 ctl_done((union ctl_io *)ctsio); 9503 9504 return (CTL_RETVAL_COMPLETE); 9505} 9506 9507#ifdef notyet 9508static int 9509ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9510{ 9511 9512} 9513#endif 9514 9515static int 9516ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9517{ 9518 struct scsi_vpd_supported_pages *pages; 9519 int sup_page_size; 9520 struct ctl_lun *lun; 9521 9522 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9523 9524 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9525 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9526 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9527 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9528 ctsio->kern_sg_entries = 0; 9529 9530 if (sup_page_size < alloc_len) { 9531 ctsio->residual = alloc_len - sup_page_size; 9532 ctsio->kern_data_len = sup_page_size; 9533 ctsio->kern_total_len = sup_page_size; 9534 } else { 9535 ctsio->residual = 0; 9536 ctsio->kern_data_len = alloc_len; 9537 ctsio->kern_total_len = alloc_len; 9538 } 9539 ctsio->kern_data_resid = 0; 9540 ctsio->kern_rel_offset = 0; 9541 ctsio->kern_sg_entries = 0; 9542 9543 /* 9544 * The control device is always connected. The disk device, on the 9545 * other hand, may not be online all the time. Need to change this 9546 * to figure out whether the disk device is actually online or not. 9547 */ 9548 if (lun != NULL) 9549 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9550 lun->be_lun->lun_type; 9551 else 9552 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9553 9554 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9555 /* Supported VPD pages */ 9556 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9557 /* Serial Number */ 9558 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9559 /* Device Identification */ 9560 pages->page_list[2] = SVPD_DEVICE_ID; 9561 /* Block limits */ 9562 pages->page_list[3] = SVPD_BLOCK_LIMITS; 9563 /* Logical Block Provisioning */ 9564 pages->page_list[4] = SVPD_LBP; 9565 9566 ctsio->scsi_status = SCSI_STATUS_OK; 9567 9568 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9569 ctsio->be_move_done = ctl_config_move_done; 9570 ctl_datamove((union ctl_io *)ctsio); 9571 9572 return (CTL_RETVAL_COMPLETE); 9573} 9574 9575static int 9576ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9577{ 9578 struct scsi_vpd_unit_serial_number *sn_ptr; 9579 struct ctl_lun *lun; 9580#ifndef CTL_USE_BACKEND_SN 9581 char tmpstr[32]; 9582#endif 9583 9584 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9585 9586 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9587 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9588 ctsio->kern_sg_entries = 0; 9589 9590 if (sizeof(*sn_ptr) < alloc_len) { 9591 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9592 ctsio->kern_data_len = sizeof(*sn_ptr); 9593 ctsio->kern_total_len = sizeof(*sn_ptr); 9594 } else { 9595 ctsio->residual = 0; 9596 ctsio->kern_data_len = alloc_len; 9597 ctsio->kern_total_len = alloc_len; 9598 } 9599 ctsio->kern_data_resid = 0; 9600 ctsio->kern_rel_offset = 0; 9601 ctsio->kern_sg_entries = 0; 9602 9603 /* 9604 * The control device is always connected. The disk device, on the 9605 * other hand, may not be online all the time. Need to change this 9606 * to figure out whether the disk device is actually online or not. 9607 */ 9608 if (lun != NULL) 9609 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9610 lun->be_lun->lun_type; 9611 else 9612 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9613 9614 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9615 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9616#ifdef CTL_USE_BACKEND_SN 9617 /* 9618 * If we don't have a LUN, we just leave the serial number as 9619 * all spaces. 9620 */ 9621 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9622 if (lun != NULL) { 9623 strncpy((char *)sn_ptr->serial_num, 9624 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9625 } 9626#else 9627 /* 9628 * Note that we're using a non-unique serial number here, 9629 */ 9630 snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000"); 9631 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9632 strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN, 9633 ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4))); 9634#endif 9635 ctsio->scsi_status = SCSI_STATUS_OK; 9636 9637 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9638 ctsio->be_move_done = ctl_config_move_done; 9639 ctl_datamove((union ctl_io *)ctsio); 9640 9641 return (CTL_RETVAL_COMPLETE); 9642} 9643 9644 9645static int 9646ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9647{ 9648 struct scsi_vpd_device_id *devid_ptr; 9649 struct scsi_vpd_id_descriptor *desc, *desc1; 9650 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9651 struct scsi_vpd_id_t10 *t10id; 9652 struct ctl_softc *ctl_softc; 9653 struct ctl_lun *lun; 9654 struct ctl_frontend *fe; 9655 char *val; 9656#ifndef CTL_USE_BACKEND_SN 9657 char tmpstr[32]; 9658#endif /* CTL_USE_BACKEND_SN */ 9659 int devid_len; 9660 9661 ctl_softc = control_softc; 9662 9663 mtx_lock(&ctl_softc->ctl_lock); 9664 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9665 mtx_unlock(&ctl_softc->ctl_lock); 9666 9667 if (fe->devid != NULL) 9668 return ((fe->devid)(ctsio, alloc_len)); 9669 9670 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9671 9672 devid_len = sizeof(struct scsi_vpd_device_id) + 9673 sizeof(struct scsi_vpd_id_descriptor) + 9674 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 9675 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9676 sizeof(struct scsi_vpd_id_descriptor) + 9677 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9678 sizeof(struct scsi_vpd_id_descriptor) + 9679 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9680 9681 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 9682 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9683 ctsio->kern_sg_entries = 0; 9684 9685 if (devid_len < alloc_len) { 9686 ctsio->residual = alloc_len - devid_len; 9687 ctsio->kern_data_len = devid_len; 9688 ctsio->kern_total_len = devid_len; 9689 } else { 9690 ctsio->residual = 0; 9691 ctsio->kern_data_len = alloc_len; 9692 ctsio->kern_total_len = alloc_len; 9693 } 9694 ctsio->kern_data_resid = 0; 9695 ctsio->kern_rel_offset = 0; 9696 ctsio->kern_sg_entries = 0; 9697 9698 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9699 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9700 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9701 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 9702 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9703 CTL_WWPN_LEN); 9704 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9705 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9706 9707 /* 9708 * The control device is always connected. The disk device, on the 9709 * other hand, may not be online all the time. 9710 */ 9711 if (lun != NULL) 9712 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9713 lun->be_lun->lun_type; 9714 else 9715 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9716 9717 devid_ptr->page_code = SVPD_DEVICE_ID; 9718 9719 scsi_ulto2b(devid_len - 4, devid_ptr->length); 9720 9721 mtx_lock(&ctl_softc->ctl_lock); 9722 9723 /* 9724 * For Fibre channel, 9725 */ 9726 if (fe->port_type == CTL_PORT_FC) 9727 { 9728 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9729 SVPD_ID_CODESET_ASCII; 9730 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9731 SVPD_ID_CODESET_BINARY; 9732 } 9733 else 9734 { 9735 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9736 SVPD_ID_CODESET_ASCII; 9737 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9738 SVPD_ID_CODESET_BINARY; 9739 } 9740 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9741 mtx_unlock(&ctl_softc->ctl_lock); 9742 9743 /* 9744 * We're using a LUN association here. i.e., this device ID is a 9745 * per-LUN identifier. 9746 */ 9747 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9748 desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 9749 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 9750 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9751 } else { 9752 memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 9753 strncpy(t10id->vendor, val, 9754 min(sizeof(t10id->vendor), strlen(val))); 9755 } 9756 9757 /* 9758 * desc1 is for the WWPN which is a port asscociation. 9759 */ 9760 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9761 desc1->length = CTL_WWPN_LEN; 9762 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9763 /* For testing just create the WWPN */ 9764#if 0 9765 ddb_GetWWNN((char *)desc1->identifier); 9766 9767 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9768 /* This is so Copancontrol will return something sane */ 9769 if (ctsio->io_hdr.nexus.targ_port!=0 && 9770 ctsio->io_hdr.nexus.targ_port!=8) 9771 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9772 else 9773 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9774#endif 9775 9776 be64enc(desc1->identifier, fe->wwpn); 9777 9778 /* 9779 * desc2 is for the Relative Target Port(type 4h) identifier 9780 */ 9781 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9782 | SVPD_ID_TYPE_RELTARG; 9783 desc2->length = 4; 9784//#if 0 9785 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9786 /* This is so Copancontrol will return something sane */ 9787 if (ctsio->io_hdr.nexus.targ_port!=0 && 9788 ctsio->io_hdr.nexus.targ_port!=8) 9789 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9790 else 9791 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9792//#endif 9793 9794 /* 9795 * desc3 is for the Target Port Group(type 5h) identifier 9796 */ 9797 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9798 | SVPD_ID_TYPE_TPORTGRP; 9799 desc3->length = 4; 9800 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9801 desc3->identifier[3] = 1; 9802 else 9803 desc3->identifier[3] = 2; 9804 9805#ifdef CTL_USE_BACKEND_SN 9806 /* 9807 * If we've actually got a backend, copy the device id from the 9808 * per-LUN data. Otherwise, set it to all spaces. 9809 */ 9810 if (lun != NULL) { 9811 /* 9812 * Copy the backend's LUN ID. 9813 */ 9814 strncpy((char *)t10id->vendor_spec_id, 9815 (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 9816 } else { 9817 /* 9818 * No backend, set this to spaces. 9819 */ 9820 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 9821 } 9822#else 9823 snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d", 9824 (lun != NULL) ? (int)lun->lun : 0); 9825 strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN, 9826 sizeof(tmpstr))); 9827#endif 9828 9829 ctsio->scsi_status = SCSI_STATUS_OK; 9830 9831 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9832 ctsio->be_move_done = ctl_config_move_done; 9833 ctl_datamove((union ctl_io *)ctsio); 9834 9835 return (CTL_RETVAL_COMPLETE); 9836} 9837 9838static int 9839ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9840{ 9841 struct scsi_vpd_block_limits *bl_ptr; 9842 struct ctl_lun *lun; 9843 int bs; 9844 9845 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9846 bs = lun->be_lun->blocksize; 9847 9848 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9849 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9850 ctsio->kern_sg_entries = 0; 9851 9852 if (sizeof(*bl_ptr) < alloc_len) { 9853 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9854 ctsio->kern_data_len = sizeof(*bl_ptr); 9855 ctsio->kern_total_len = sizeof(*bl_ptr); 9856 } else { 9857 ctsio->residual = 0; 9858 ctsio->kern_data_len = alloc_len; 9859 ctsio->kern_total_len = alloc_len; 9860 } 9861 ctsio->kern_data_resid = 0; 9862 ctsio->kern_rel_offset = 0; 9863 ctsio->kern_sg_entries = 0; 9864 9865 /* 9866 * The control device is always connected. The disk device, on the 9867 * other hand, may not be online all the time. Need to change this 9868 * to figure out whether the disk device is actually online or not. 9869 */ 9870 if (lun != NULL) 9871 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9872 lun->be_lun->lun_type; 9873 else 9874 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9875 9876 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9877 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9878 bl_ptr->max_cmp_write_len = 0xff; 9879 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9880 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9881 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9882 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9883 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9884 } 9885 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9886 9887 ctsio->scsi_status = SCSI_STATUS_OK; 9888 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9889 ctsio->be_move_done = ctl_config_move_done; 9890 ctl_datamove((union ctl_io *)ctsio); 9891 9892 return (CTL_RETVAL_COMPLETE); 9893} 9894 9895static int 9896ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 9897{ 9898 struct scsi_vpd_logical_block_prov *lbp_ptr; 9899 struct ctl_lun *lun; 9900 int bs; 9901 9902 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9903 bs = lun->be_lun->blocksize; 9904 9905 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 9906 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 9907 ctsio->kern_sg_entries = 0; 9908 9909 if (sizeof(*lbp_ptr) < alloc_len) { 9910 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 9911 ctsio->kern_data_len = sizeof(*lbp_ptr); 9912 ctsio->kern_total_len = sizeof(*lbp_ptr); 9913 } else { 9914 ctsio->residual = 0; 9915 ctsio->kern_data_len = alloc_len; 9916 ctsio->kern_total_len = alloc_len; 9917 } 9918 ctsio->kern_data_resid = 0; 9919 ctsio->kern_rel_offset = 0; 9920 ctsio->kern_sg_entries = 0; 9921 9922 /* 9923 * The control device is always connected. The disk device, on the 9924 * other hand, may not be online all the time. Need to change this 9925 * to figure out whether the disk device is actually online or not. 9926 */ 9927 if (lun != NULL) 9928 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9929 lun->be_lun->lun_type; 9930 else 9931 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9932 9933 lbp_ptr->page_code = SVPD_LBP; 9934 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 9935 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 9936 9937 ctsio->scsi_status = SCSI_STATUS_OK; 9938 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9939 ctsio->be_move_done = ctl_config_move_done; 9940 ctl_datamove((union ctl_io *)ctsio); 9941 9942 return (CTL_RETVAL_COMPLETE); 9943} 9944 9945static int 9946ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9947{ 9948 struct scsi_inquiry *cdb; 9949 struct ctl_lun *lun; 9950 int alloc_len, retval; 9951 9952 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9953 cdb = (struct scsi_inquiry *)ctsio->cdb; 9954 9955 retval = CTL_RETVAL_COMPLETE; 9956 9957 alloc_len = scsi_2btoul(cdb->length); 9958 9959 switch (cdb->page_code) { 9960 case SVPD_SUPPORTED_PAGES: 9961 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9962 break; 9963 case SVPD_UNIT_SERIAL_NUMBER: 9964 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9965 break; 9966 case SVPD_DEVICE_ID: 9967 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9968 break; 9969 case SVPD_BLOCK_LIMITS: 9970 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 9971 break; 9972 case SVPD_LBP: 9973 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 9974 break; 9975 default: 9976 ctl_set_invalid_field(ctsio, 9977 /*sks_valid*/ 1, 9978 /*command*/ 1, 9979 /*field*/ 2, 9980 /*bit_valid*/ 0, 9981 /*bit*/ 0); 9982 ctl_done((union ctl_io *)ctsio); 9983 retval = CTL_RETVAL_COMPLETE; 9984 break; 9985 } 9986 9987 return (retval); 9988} 9989 9990static int 9991ctl_inquiry_std(struct ctl_scsiio *ctsio) 9992{ 9993 struct scsi_inquiry_data *inq_ptr; 9994 struct scsi_inquiry *cdb; 9995 struct ctl_softc *ctl_softc; 9996 struct ctl_lun *lun; 9997 char *val; 9998 uint32_t alloc_len; 9999 int is_fc; 10000 10001 ctl_softc = control_softc; 10002 10003 /* 10004 * Figure out whether we're talking to a Fibre Channel port or not. 10005 * We treat the ioctl front end, and any SCSI adapters, as packetized 10006 * SCSI front ends. 10007 */ 10008 mtx_lock(&ctl_softc->ctl_lock); 10009 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 10010 CTL_PORT_FC) 10011 is_fc = 0; 10012 else 10013 is_fc = 1; 10014 mtx_unlock(&ctl_softc->ctl_lock); 10015 10016 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 10017 cdb = (struct scsi_inquiry *)ctsio->cdb; 10018 alloc_len = scsi_2btoul(cdb->length); 10019 10020 /* 10021 * We malloc the full inquiry data size here and fill it 10022 * in. If the user only asks for less, we'll give him 10023 * that much. 10024 */ 10025 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 10026 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 10027 ctsio->kern_sg_entries = 0; 10028 ctsio->kern_data_resid = 0; 10029 ctsio->kern_rel_offset = 0; 10030 10031 if (sizeof(*inq_ptr) < alloc_len) { 10032 ctsio->residual = alloc_len - sizeof(*inq_ptr); 10033 ctsio->kern_data_len = sizeof(*inq_ptr); 10034 ctsio->kern_total_len = sizeof(*inq_ptr); 10035 } else { 10036 ctsio->residual = 0; 10037 ctsio->kern_data_len = alloc_len; 10038 ctsio->kern_total_len = alloc_len; 10039 } 10040 10041 /* 10042 * If we have a LUN configured, report it as connected. Otherwise, 10043 * report that it is offline or no device is supported, depending 10044 * on the value of inquiry_pq_no_lun. 10045 * 10046 * According to the spec (SPC-4 r34), the peripheral qualifier 10047 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 10048 * 10049 * "A peripheral device having the specified peripheral device type 10050 * is not connected to this logical unit. However, the device 10051 * server is capable of supporting the specified peripheral device 10052 * type on this logical unit." 10053 * 10054 * According to the same spec, the peripheral qualifier 10055 * SID_QUAL_BAD_LU (011b) is used in this scenario: 10056 * 10057 * "The device server is not capable of supporting a peripheral 10058 * device on this logical unit. For this peripheral qualifier the 10059 * peripheral device type shall be set to 1Fh. All other peripheral 10060 * device type values are reserved for this peripheral qualifier." 10061 * 10062 * Given the text, it would seem that we probably want to report that 10063 * the LUN is offline here. There is no LUN connected, but we can 10064 * support a LUN at the given LUN number. 10065 * 10066 * In the real world, though, it sounds like things are a little 10067 * different: 10068 * 10069 * - Linux, when presented with a LUN with the offline peripheral 10070 * qualifier, will create an sg driver instance for it. So when 10071 * you attach it to CTL, you wind up with a ton of sg driver 10072 * instances. (One for every LUN that Linux bothered to probe.) 10073 * Linux does this despite the fact that it issues a REPORT LUNs 10074 * to LUN 0 to get the inventory of supported LUNs. 10075 * 10076 * - There is other anecdotal evidence (from Emulex folks) about 10077 * arrays that use the offline peripheral qualifier for LUNs that 10078 * are on the "passive" path in an active/passive array. 10079 * 10080 * So the solution is provide a hopefully reasonable default 10081 * (return bad/no LUN) and allow the user to change the behavior 10082 * with a tunable/sysctl variable. 10083 */ 10084 if (lun != NULL) 10085 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 10086 lun->be_lun->lun_type; 10087 else if (ctl_softc->inquiry_pq_no_lun == 0) 10088 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 10089 else 10090 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 10091 10092 /* RMB in byte 2 is 0 */ 10093 inq_ptr->version = SCSI_REV_SPC3; 10094 10095 /* 10096 * According to SAM-3, even if a device only supports a single 10097 * level of LUN addressing, it should still set the HISUP bit: 10098 * 10099 * 4.9.1 Logical unit numbers overview 10100 * 10101 * All logical unit number formats described in this standard are 10102 * hierarchical in structure even when only a single level in that 10103 * hierarchy is used. The HISUP bit shall be set to one in the 10104 * standard INQUIRY data (see SPC-2) when any logical unit number 10105 * format described in this standard is used. Non-hierarchical 10106 * formats are outside the scope of this standard. 10107 * 10108 * Therefore we set the HiSup bit here. 10109 * 10110 * The reponse format is 2, per SPC-3. 10111 */ 10112 inq_ptr->response_format = SID_HiSup | 2; 10113 10114 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 10115 CTL_DEBUG_PRINT(("additional_length = %d\n", 10116 inq_ptr->additional_length)); 10117 10118 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 10119 /* 16 bit addressing */ 10120 if (is_fc == 0) 10121 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 10122 /* XXX set the SID_MultiP bit here if we're actually going to 10123 respond on multiple ports */ 10124 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 10125 10126 /* 16 bit data bus, synchronous transfers */ 10127 /* XXX these flags don't apply for FC */ 10128 if (is_fc == 0) 10129 inq_ptr->flags = SID_WBus16 | SID_Sync; 10130 /* 10131 * XXX KDM do we want to support tagged queueing on the control 10132 * device at all? 10133 */ 10134 if ((lun == NULL) 10135 || (lun->be_lun->lun_type != T_PROCESSOR)) 10136 inq_ptr->flags |= SID_CmdQue; 10137 /* 10138 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 10139 * We have 8 bytes for the vendor name, and 16 bytes for the device 10140 * name and 4 bytes for the revision. 10141 */ 10142 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 10143 strcpy(inq_ptr->vendor, CTL_VENDOR); 10144 } else { 10145 memset(inq_ptr->vendor, ' ', sizeof(inq_ptr->vendor)); 10146 strncpy(inq_ptr->vendor, val, 10147 min(sizeof(inq_ptr->vendor), strlen(val))); 10148 } 10149 if (lun == NULL) { 10150 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10151 } else if ((val = ctl_get_opt(lun->be_lun, "product")) == NULL) { 10152 switch (lun->be_lun->lun_type) { 10153 case T_DIRECT: 10154 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10155 break; 10156 case T_PROCESSOR: 10157 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 10158 break; 10159 default: 10160 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 10161 break; 10162 } 10163 } else { 10164 memset(inq_ptr->product, ' ', sizeof(inq_ptr->product)); 10165 strncpy(inq_ptr->product, val, 10166 min(sizeof(inq_ptr->product), strlen(val))); 10167 } 10168 10169 /* 10170 * XXX make this a macro somewhere so it automatically gets 10171 * incremented when we make changes. 10172 */ 10173 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "revision")) == NULL) { 10174 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 10175 } else { 10176 memset(inq_ptr->revision, ' ', sizeof(inq_ptr->revision)); 10177 strncpy(inq_ptr->revision, val, 10178 min(sizeof(inq_ptr->revision), strlen(val))); 10179 } 10180 10181 /* 10182 * For parallel SCSI, we support double transition and single 10183 * transition clocking. We also support QAS (Quick Arbitration 10184 * and Selection) and Information Unit transfers on both the 10185 * control and array devices. 10186 */ 10187 if (is_fc == 0) 10188 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 10189 SID_SPI_IUS; 10190 10191 /* SAM-3 */ 10192 scsi_ulto2b(0x0060, inq_ptr->version1); 10193 /* SPC-3 (no version claimed) XXX should we claim a version? */ 10194 scsi_ulto2b(0x0300, inq_ptr->version2); 10195 if (is_fc) { 10196 /* FCP-2 ANSI INCITS.350:2003 */ 10197 scsi_ulto2b(0x0917, inq_ptr->version3); 10198 } else { 10199 /* SPI-4 ANSI INCITS.362:200x */ 10200 scsi_ulto2b(0x0B56, inq_ptr->version3); 10201 } 10202 10203 if (lun == NULL) { 10204 /* SBC-2 (no version claimed) XXX should we claim a version? */ 10205 scsi_ulto2b(0x0320, inq_ptr->version4); 10206 } else { 10207 switch (lun->be_lun->lun_type) { 10208 case T_DIRECT: 10209 /* 10210 * SBC-2 (no version claimed) XXX should we claim a 10211 * version? 10212 */ 10213 scsi_ulto2b(0x0320, inq_ptr->version4); 10214 break; 10215 case T_PROCESSOR: 10216 default: 10217 break; 10218 } 10219 } 10220 10221 ctsio->scsi_status = SCSI_STATUS_OK; 10222 if (ctsio->kern_data_len > 0) { 10223 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 10224 ctsio->be_move_done = ctl_config_move_done; 10225 ctl_datamove((union ctl_io *)ctsio); 10226 } else { 10227 ctsio->io_hdr.status = CTL_SUCCESS; 10228 ctl_done((union ctl_io *)ctsio); 10229 } 10230 10231 return (CTL_RETVAL_COMPLETE); 10232} 10233 10234int 10235ctl_inquiry(struct ctl_scsiio *ctsio) 10236{ 10237 struct scsi_inquiry *cdb; 10238 int retval; 10239 10240 cdb = (struct scsi_inquiry *)ctsio->cdb; 10241 10242 retval = 0; 10243 10244 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 10245 10246 /* 10247 * Right now, we don't support the CmdDt inquiry information. 10248 * This would be nice to support in the future. When we do 10249 * support it, we should change this test so that it checks to make 10250 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 10251 */ 10252#ifdef notyet 10253 if (((cdb->byte2 & SI_EVPD) 10254 && (cdb->byte2 & SI_CMDDT))) 10255#endif 10256 if (cdb->byte2 & SI_CMDDT) { 10257 /* 10258 * Point to the SI_CMDDT bit. We might change this 10259 * when we support SI_CMDDT, but since both bits would be 10260 * "wrong", this should probably just stay as-is then. 10261 */ 10262 ctl_set_invalid_field(ctsio, 10263 /*sks_valid*/ 1, 10264 /*command*/ 1, 10265 /*field*/ 1, 10266 /*bit_valid*/ 1, 10267 /*bit*/ 1); 10268 ctl_done((union ctl_io *)ctsio); 10269 return (CTL_RETVAL_COMPLETE); 10270 } 10271 if (cdb->byte2 & SI_EVPD) 10272 retval = ctl_inquiry_evpd(ctsio); 10273#ifdef notyet 10274 else if (cdb->byte2 & SI_CMDDT) 10275 retval = ctl_inquiry_cmddt(ctsio); 10276#endif 10277 else 10278 retval = ctl_inquiry_std(ctsio); 10279 10280 return (retval); 10281} 10282 10283/* 10284 * For known CDB types, parse the LBA and length. 10285 */ 10286static int 10287ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 10288{ 10289 if (io->io_hdr.io_type != CTL_IO_SCSI) 10290 return (1); 10291 10292 switch (io->scsiio.cdb[0]) { 10293 case COMPARE_AND_WRITE: { 10294 struct scsi_compare_and_write *cdb; 10295 10296 cdb = (struct scsi_compare_and_write *)io->scsiio.cdb; 10297 10298 *lba = scsi_8btou64(cdb->addr); 10299 *len = cdb->length; 10300 break; 10301 } 10302 case READ_6: 10303 case WRITE_6: { 10304 struct scsi_rw_6 *cdb; 10305 10306 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 10307 10308 *lba = scsi_3btoul(cdb->addr); 10309 /* only 5 bits are valid in the most significant address byte */ 10310 *lba &= 0x1fffff; 10311 *len = cdb->length; 10312 break; 10313 } 10314 case READ_10: 10315 case WRITE_10: { 10316 struct scsi_rw_10 *cdb; 10317 10318 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 10319 10320 *lba = scsi_4btoul(cdb->addr); 10321 *len = scsi_2btoul(cdb->length); 10322 break; 10323 } 10324 case WRITE_VERIFY_10: { 10325 struct scsi_write_verify_10 *cdb; 10326 10327 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 10328 10329 *lba = scsi_4btoul(cdb->addr); 10330 *len = scsi_2btoul(cdb->length); 10331 break; 10332 } 10333 case READ_12: 10334 case WRITE_12: { 10335 struct scsi_rw_12 *cdb; 10336 10337 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 10338 10339 *lba = scsi_4btoul(cdb->addr); 10340 *len = scsi_4btoul(cdb->length); 10341 break; 10342 } 10343 case WRITE_VERIFY_12: { 10344 struct scsi_write_verify_12 *cdb; 10345 10346 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 10347 10348 *lba = scsi_4btoul(cdb->addr); 10349 *len = scsi_4btoul(cdb->length); 10350 break; 10351 } 10352 case READ_16: 10353 case WRITE_16: { 10354 struct scsi_rw_16 *cdb; 10355 10356 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 10357 10358 *lba = scsi_8btou64(cdb->addr); 10359 *len = scsi_4btoul(cdb->length); 10360 break; 10361 } 10362 case WRITE_VERIFY_16: { 10363 struct scsi_write_verify_16 *cdb; 10364 10365 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 10366 10367 10368 *lba = scsi_8btou64(cdb->addr); 10369 *len = scsi_4btoul(cdb->length); 10370 break; 10371 } 10372 case WRITE_SAME_10: { 10373 struct scsi_write_same_10 *cdb; 10374 10375 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 10376 10377 *lba = scsi_4btoul(cdb->addr); 10378 *len = scsi_2btoul(cdb->length); 10379 break; 10380 } 10381 case WRITE_SAME_16: { 10382 struct scsi_write_same_16 *cdb; 10383 10384 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 10385 10386 *lba = scsi_8btou64(cdb->addr); 10387 *len = scsi_4btoul(cdb->length); 10388 break; 10389 } 10390 case VERIFY_10: { 10391 struct scsi_verify_10 *cdb; 10392 10393 cdb = (struct scsi_verify_10 *)io->scsiio.cdb; 10394 10395 *lba = scsi_4btoul(cdb->addr); 10396 *len = scsi_2btoul(cdb->length); 10397 break; 10398 } 10399 case VERIFY_12: { 10400 struct scsi_verify_12 *cdb; 10401 10402 cdb = (struct scsi_verify_12 *)io->scsiio.cdb; 10403 10404 *lba = scsi_4btoul(cdb->addr); 10405 *len = scsi_4btoul(cdb->length); 10406 break; 10407 } 10408 case VERIFY_16: { 10409 struct scsi_verify_16 *cdb; 10410 10411 cdb = (struct scsi_verify_16 *)io->scsiio.cdb; 10412 10413 *lba = scsi_8btou64(cdb->addr); 10414 *len = scsi_4btoul(cdb->length); 10415 break; 10416 } 10417 default: 10418 return (1); 10419 break; /* NOTREACHED */ 10420 } 10421 10422 return (0); 10423} 10424 10425static ctl_action 10426ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10427{ 10428 uint64_t endlba1, endlba2; 10429 10430 endlba1 = lba1 + len1 - 1; 10431 endlba2 = lba2 + len2 - 1; 10432 10433 if ((endlba1 < lba2) 10434 || (endlba2 < lba1)) 10435 return (CTL_ACTION_PASS); 10436 else 10437 return (CTL_ACTION_BLOCK); 10438} 10439 10440static ctl_action 10441ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10442{ 10443 uint64_t lba1, lba2; 10444 uint32_t len1, len2; 10445 int retval; 10446 10447 retval = ctl_get_lba_len(io1, &lba1, &len1); 10448 if (retval != 0) 10449 return (CTL_ACTION_ERROR); 10450 10451 retval = ctl_get_lba_len(io2, &lba2, &len2); 10452 if (retval != 0) 10453 return (CTL_ACTION_ERROR); 10454 10455 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10456} 10457 10458static ctl_action 10459ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10460{ 10461 struct ctl_cmd_entry *pending_entry, *ooa_entry; 10462 ctl_serialize_action *serialize_row; 10463 10464 /* 10465 * The initiator attempted multiple untagged commands at the same 10466 * time. Can't do that. 10467 */ 10468 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10469 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10470 && ((pending_io->io_hdr.nexus.targ_port == 10471 ooa_io->io_hdr.nexus.targ_port) 10472 && (pending_io->io_hdr.nexus.initid.id == 10473 ooa_io->io_hdr.nexus.initid.id)) 10474 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10475 return (CTL_ACTION_OVERLAP); 10476 10477 /* 10478 * The initiator attempted to send multiple tagged commands with 10479 * the same ID. (It's fine if different initiators have the same 10480 * tag ID.) 10481 * 10482 * Even if all of those conditions are true, we don't kill the I/O 10483 * if the command ahead of us has been aborted. We won't end up 10484 * sending it to the FETD, and it's perfectly legal to resend a 10485 * command with the same tag number as long as the previous 10486 * instance of this tag number has been aborted somehow. 10487 */ 10488 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10489 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10490 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10491 && ((pending_io->io_hdr.nexus.targ_port == 10492 ooa_io->io_hdr.nexus.targ_port) 10493 && (pending_io->io_hdr.nexus.initid.id == 10494 ooa_io->io_hdr.nexus.initid.id)) 10495 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10496 return (CTL_ACTION_OVERLAP_TAG); 10497 10498 /* 10499 * If we get a head of queue tag, SAM-3 says that we should 10500 * immediately execute it. 10501 * 10502 * What happens if this command would normally block for some other 10503 * reason? e.g. a request sense with a head of queue tag 10504 * immediately after a write. Normally that would block, but this 10505 * will result in its getting executed immediately... 10506 * 10507 * We currently return "pass" instead of "skip", so we'll end up 10508 * going through the rest of the queue to check for overlapped tags. 10509 * 10510 * XXX KDM check for other types of blockage first?? 10511 */ 10512 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10513 return (CTL_ACTION_PASS); 10514 10515 /* 10516 * Ordered tags have to block until all items ahead of them 10517 * have completed. If we get called with an ordered tag, we always 10518 * block, if something else is ahead of us in the queue. 10519 */ 10520 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10521 return (CTL_ACTION_BLOCK); 10522 10523 /* 10524 * Simple tags get blocked until all head of queue and ordered tags 10525 * ahead of them have completed. I'm lumping untagged commands in 10526 * with simple tags here. XXX KDM is that the right thing to do? 10527 */ 10528 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10529 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10530 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10531 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10532 return (CTL_ACTION_BLOCK); 10533 10534 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 10535 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 10536 10537 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10538 10539 switch (serialize_row[pending_entry->seridx]) { 10540 case CTL_SER_BLOCK: 10541 return (CTL_ACTION_BLOCK); 10542 break; /* NOTREACHED */ 10543 case CTL_SER_EXTENT: 10544 return (ctl_extent_check(pending_io, ooa_io)); 10545 break; /* NOTREACHED */ 10546 case CTL_SER_PASS: 10547 return (CTL_ACTION_PASS); 10548 break; /* NOTREACHED */ 10549 case CTL_SER_SKIP: 10550 return (CTL_ACTION_SKIP); 10551 break; 10552 default: 10553 panic("invalid serialization value %d", 10554 serialize_row[pending_entry->seridx]); 10555 break; /* NOTREACHED */ 10556 } 10557 10558 return (CTL_ACTION_ERROR); 10559} 10560 10561/* 10562 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10563 * Assumptions: 10564 * - pending_io is generally either incoming, or on the blocked queue 10565 * - starting I/O is the I/O we want to start the check with. 10566 */ 10567static ctl_action 10568ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10569 union ctl_io *starting_io) 10570{ 10571 union ctl_io *ooa_io; 10572 ctl_action action; 10573 10574 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 10575 10576 /* 10577 * Run back along the OOA queue, starting with the current 10578 * blocked I/O and going through every I/O before it on the 10579 * queue. If starting_io is NULL, we'll just end up returning 10580 * CTL_ACTION_PASS. 10581 */ 10582 for (ooa_io = starting_io; ooa_io != NULL; 10583 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10584 ooa_links)){ 10585 10586 /* 10587 * This routine just checks to see whether 10588 * cur_blocked is blocked by ooa_io, which is ahead 10589 * of it in the queue. It doesn't queue/dequeue 10590 * cur_blocked. 10591 */ 10592 action = ctl_check_for_blockage(pending_io, ooa_io); 10593 switch (action) { 10594 case CTL_ACTION_BLOCK: 10595 case CTL_ACTION_OVERLAP: 10596 case CTL_ACTION_OVERLAP_TAG: 10597 case CTL_ACTION_SKIP: 10598 case CTL_ACTION_ERROR: 10599 return (action); 10600 break; /* NOTREACHED */ 10601 case CTL_ACTION_PASS: 10602 break; 10603 default: 10604 panic("invalid action %d", action); 10605 break; /* NOTREACHED */ 10606 } 10607 } 10608 10609 return (CTL_ACTION_PASS); 10610} 10611 10612/* 10613 * Assumptions: 10614 * - An I/O has just completed, and has been removed from the per-LUN OOA 10615 * queue, so some items on the blocked queue may now be unblocked. 10616 */ 10617static int 10618ctl_check_blocked(struct ctl_lun *lun) 10619{ 10620 union ctl_io *cur_blocked, *next_blocked; 10621 10622 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 10623 10624 /* 10625 * Run forward from the head of the blocked queue, checking each 10626 * entry against the I/Os prior to it on the OOA queue to see if 10627 * there is still any blockage. 10628 * 10629 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10630 * with our removing a variable on it while it is traversing the 10631 * list. 10632 */ 10633 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10634 cur_blocked != NULL; cur_blocked = next_blocked) { 10635 union ctl_io *prev_ooa; 10636 ctl_action action; 10637 10638 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10639 blocked_links); 10640 10641 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10642 ctl_ooaq, ooa_links); 10643 10644 /* 10645 * If cur_blocked happens to be the first item in the OOA 10646 * queue now, prev_ooa will be NULL, and the action 10647 * returned will just be CTL_ACTION_PASS. 10648 */ 10649 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10650 10651 switch (action) { 10652 case CTL_ACTION_BLOCK: 10653 /* Nothing to do here, still blocked */ 10654 break; 10655 case CTL_ACTION_OVERLAP: 10656 case CTL_ACTION_OVERLAP_TAG: 10657 /* 10658 * This shouldn't happen! In theory we've already 10659 * checked this command for overlap... 10660 */ 10661 break; 10662 case CTL_ACTION_PASS: 10663 case CTL_ACTION_SKIP: { 10664 struct ctl_softc *softc; 10665 struct ctl_cmd_entry *entry; 10666 uint32_t initidx; 10667 uint8_t opcode; 10668 int isc_retval; 10669 10670 /* 10671 * The skip case shouldn't happen, this transaction 10672 * should have never made it onto the blocked queue. 10673 */ 10674 /* 10675 * This I/O is no longer blocked, we can remove it 10676 * from the blocked queue. Since this is a TAILQ 10677 * (doubly linked list), we can do O(1) removals 10678 * from any place on the list. 10679 */ 10680 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10681 blocked_links); 10682 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10683 10684 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10685 /* 10686 * Need to send IO back to original side to 10687 * run 10688 */ 10689 union ctl_ha_msg msg_info; 10690 10691 msg_info.hdr.original_sc = 10692 cur_blocked->io_hdr.original_sc; 10693 msg_info.hdr.serializing_sc = cur_blocked; 10694 msg_info.hdr.msg_type = CTL_MSG_R2R; 10695 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10696 &msg_info, sizeof(msg_info), 0)) > 10697 CTL_HA_STATUS_SUCCESS) { 10698 printf("CTL:Check Blocked error from " 10699 "ctl_ha_msg_send %d\n", 10700 isc_retval); 10701 } 10702 break; 10703 } 10704 opcode = cur_blocked->scsiio.cdb[0]; 10705 entry = &ctl_cmd_table[opcode]; 10706 softc = control_softc; 10707 10708 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10709 10710 /* 10711 * Check this I/O for LUN state changes that may 10712 * have happened while this command was blocked. 10713 * The LUN state may have been changed by a command 10714 * ahead of us in the queue, so we need to re-check 10715 * for any states that can be caused by SCSI 10716 * commands. 10717 */ 10718 if (ctl_scsiio_lun_check(softc, lun, entry, 10719 &cur_blocked->scsiio) == 0) { 10720 cur_blocked->io_hdr.flags |= 10721 CTL_FLAG_IS_WAS_ON_RTR; 10722 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 10723 &cur_blocked->io_hdr, links); 10724 /* 10725 * In the non CTL_DONE_THREAD case, we need 10726 * to wake up the work thread here. When 10727 * we're processing completed requests from 10728 * the work thread context, we'll pop back 10729 * around and end up pulling things off the 10730 * RtR queue. When we aren't processing 10731 * things from the work thread context, 10732 * though, we won't ever check the RtR queue. 10733 * So we need to wake up the thread to clear 10734 * things off the queue. Otherwise this 10735 * transaction will just sit on the RtR queue 10736 * until a new I/O comes in. (Which may or 10737 * may not happen...) 10738 */ 10739#ifndef CTL_DONE_THREAD 10740 ctl_wakeup_thread(); 10741#endif 10742 } else 10743 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 10744 break; 10745 } 10746 default: 10747 /* 10748 * This probably shouldn't happen -- we shouldn't 10749 * get CTL_ACTION_ERROR, or anything else. 10750 */ 10751 break; 10752 } 10753 } 10754 10755 return (CTL_RETVAL_COMPLETE); 10756} 10757 10758/* 10759 * This routine (with one exception) checks LUN flags that can be set by 10760 * commands ahead of us in the OOA queue. These flags have to be checked 10761 * when a command initially comes in, and when we pull a command off the 10762 * blocked queue and are preparing to execute it. The reason we have to 10763 * check these flags for commands on the blocked queue is that the LUN 10764 * state may have been changed by a command ahead of us while we're on the 10765 * blocked queue. 10766 * 10767 * Ordering is somewhat important with these checks, so please pay 10768 * careful attention to the placement of any new checks. 10769 */ 10770static int 10771ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10772 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10773{ 10774 int retval; 10775 10776 retval = 0; 10777 10778 /* 10779 * If this shelf is a secondary shelf controller, we have to reject 10780 * any media access commands. 10781 */ 10782#if 0 10783 /* No longer needed for HA */ 10784 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10785 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10786 ctl_set_lun_standby(ctsio); 10787 retval = 1; 10788 goto bailout; 10789 } 10790#endif 10791 10792 /* 10793 * Check for a reservation conflict. If this command isn't allowed 10794 * even on reserved LUNs, and if this initiator isn't the one who 10795 * reserved us, reject the command with a reservation conflict. 10796 */ 10797 if ((lun->flags & CTL_LUN_RESERVED) 10798 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10799 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10800 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10801 || (ctsio->io_hdr.nexus.targ_target.id != 10802 lun->rsv_nexus.targ_target.id)) { 10803 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10804 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10805 retval = 1; 10806 goto bailout; 10807 } 10808 } 10809 10810 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10811 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10812 uint32_t residx; 10813 10814 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10815 /* 10816 * if we aren't registered or it's a res holder type 10817 * reservation and this isn't the res holder then set a 10818 * conflict. 10819 * NOTE: Commands which might be allowed on write exclusive 10820 * type reservations are checked in the particular command 10821 * for a conflict. Read and SSU are the only ones. 10822 */ 10823 if (!lun->per_res[residx].registered 10824 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10825 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10826 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10827 retval = 1; 10828 goto bailout; 10829 } 10830 10831 } 10832 10833 if ((lun->flags & CTL_LUN_OFFLINE) 10834 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10835 ctl_set_lun_not_ready(ctsio); 10836 retval = 1; 10837 goto bailout; 10838 } 10839 10840 /* 10841 * If the LUN is stopped, see if this particular command is allowed 10842 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10843 */ 10844 if ((lun->flags & CTL_LUN_STOPPED) 10845 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10846 /* "Logical unit not ready, initializing cmd. required" */ 10847 ctl_set_lun_stopped(ctsio); 10848 retval = 1; 10849 goto bailout; 10850 } 10851 10852 if ((lun->flags & CTL_LUN_INOPERABLE) 10853 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10854 /* "Medium format corrupted" */ 10855 ctl_set_medium_format_corrupted(ctsio); 10856 retval = 1; 10857 goto bailout; 10858 } 10859 10860bailout: 10861 return (retval); 10862 10863} 10864 10865static void 10866ctl_failover_io(union ctl_io *io, int have_lock) 10867{ 10868 ctl_set_busy(&io->scsiio); 10869 ctl_done_lock(io, have_lock); 10870} 10871 10872static void 10873ctl_failover(void) 10874{ 10875 struct ctl_lun *lun; 10876 struct ctl_softc *ctl_softc; 10877 union ctl_io *next_io, *pending_io; 10878 union ctl_io *io; 10879 int lun_idx; 10880 int i; 10881 10882 ctl_softc = control_softc; 10883 10884 mtx_lock(&ctl_softc->ctl_lock); 10885 /* 10886 * Remove any cmds from the other SC from the rtr queue. These 10887 * will obviously only be for LUNs for which we're the primary. 10888 * We can't send status or get/send data for these commands. 10889 * Since they haven't been executed yet, we can just remove them. 10890 * We'll either abort them or delete them below, depending on 10891 * which HA mode we're in. 10892 */ 10893 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10894 io != NULL; io = next_io) { 10895 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10896 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10897 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10898 ctl_io_hdr, links); 10899 } 10900 10901 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10902 lun = ctl_softc->ctl_luns[lun_idx]; 10903 if (lun==NULL) 10904 continue; 10905 10906 /* 10907 * Processor LUNs are primary on both sides. 10908 * XXX will this always be true? 10909 */ 10910 if (lun->be_lun->lun_type == T_PROCESSOR) 10911 continue; 10912 10913 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10914 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10915 printf("FAILOVER: primary lun %d\n", lun_idx); 10916 /* 10917 * Remove all commands from the other SC. First from the 10918 * blocked queue then from the ooa queue. Once we have 10919 * removed them. Call ctl_check_blocked to see if there 10920 * is anything that can run. 10921 */ 10922 for (io = (union ctl_io *)TAILQ_FIRST( 10923 &lun->blocked_queue); io != NULL; io = next_io) { 10924 10925 next_io = (union ctl_io *)TAILQ_NEXT( 10926 &io->io_hdr, blocked_links); 10927 10928 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10929 TAILQ_REMOVE(&lun->blocked_queue, 10930 &io->io_hdr,blocked_links); 10931 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10932 TAILQ_REMOVE(&lun->ooa_queue, 10933 &io->io_hdr, ooa_links); 10934 10935 ctl_free_io(io); 10936 } 10937 } 10938 10939 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10940 io != NULL; io = next_io) { 10941 10942 next_io = (union ctl_io *)TAILQ_NEXT( 10943 &io->io_hdr, ooa_links); 10944 10945 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10946 10947 TAILQ_REMOVE(&lun->ooa_queue, 10948 &io->io_hdr, 10949 ooa_links); 10950 10951 ctl_free_io(io); 10952 } 10953 } 10954 ctl_check_blocked(lun); 10955 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10956 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10957 10958 printf("FAILOVER: primary lun %d\n", lun_idx); 10959 /* 10960 * Abort all commands from the other SC. We can't 10961 * send status back for them now. These should get 10962 * cleaned up when they are completed or come out 10963 * for a datamove operation. 10964 */ 10965 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10966 io != NULL; io = next_io) { 10967 next_io = (union ctl_io *)TAILQ_NEXT( 10968 &io->io_hdr, ooa_links); 10969 10970 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10971 io->io_hdr.flags |= CTL_FLAG_ABORT; 10972 } 10973 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10974 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10975 10976 printf("FAILOVER: secondary lun %d\n", lun_idx); 10977 10978 lun->flags |= CTL_LUN_PRIMARY_SC; 10979 10980 /* 10981 * We send all I/O that was sent to this controller 10982 * and redirected to the other side back with 10983 * busy status, and have the initiator retry it. 10984 * Figuring out how much data has been transferred, 10985 * etc. and picking up where we left off would be 10986 * very tricky. 10987 * 10988 * XXX KDM need to remove I/O from the blocked 10989 * queue as well! 10990 */ 10991 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10992 &lun->ooa_queue); pending_io != NULL; 10993 pending_io = next_io) { 10994 10995 next_io = (union ctl_io *)TAILQ_NEXT( 10996 &pending_io->io_hdr, ooa_links); 10997 10998 pending_io->io_hdr.flags &= 10999 ~CTL_FLAG_SENT_2OTHER_SC; 11000 11001 if (pending_io->io_hdr.flags & 11002 CTL_FLAG_IO_ACTIVE) { 11003 pending_io->io_hdr.flags |= 11004 CTL_FLAG_FAILOVER; 11005 } else { 11006 ctl_set_busy(&pending_io->scsiio); 11007 ctl_done_lock(pending_io, 11008 /*have_lock*/1); 11009 } 11010 } 11011 11012 /* 11013 * Build Unit Attention 11014 */ 11015 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11016 lun->pending_sense[i].ua_pending |= 11017 CTL_UA_ASYM_ACC_CHANGE; 11018 } 11019 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 11020 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 11021 printf("FAILOVER: secondary lun %d\n", lun_idx); 11022 /* 11023 * if the first io on the OOA is not on the RtR queue 11024 * add it. 11025 */ 11026 lun->flags |= CTL_LUN_PRIMARY_SC; 11027 11028 pending_io = (union ctl_io *)TAILQ_FIRST( 11029 &lun->ooa_queue); 11030 if (pending_io==NULL) { 11031 printf("Nothing on OOA queue\n"); 11032 continue; 11033 } 11034 11035 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 11036 if ((pending_io->io_hdr.flags & 11037 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 11038 pending_io->io_hdr.flags |= 11039 CTL_FLAG_IS_WAS_ON_RTR; 11040 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11041 &pending_io->io_hdr, links); 11042 } 11043#if 0 11044 else 11045 { 11046 printf("Tag 0x%04x is running\n", 11047 pending_io->scsiio.tag_num); 11048 } 11049#endif 11050 11051 next_io = (union ctl_io *)TAILQ_NEXT( 11052 &pending_io->io_hdr, ooa_links); 11053 for (pending_io=next_io; pending_io != NULL; 11054 pending_io = next_io) { 11055 pending_io->io_hdr.flags &= 11056 ~CTL_FLAG_SENT_2OTHER_SC; 11057 next_io = (union ctl_io *)TAILQ_NEXT( 11058 &pending_io->io_hdr, ooa_links); 11059 if (pending_io->io_hdr.flags & 11060 CTL_FLAG_IS_WAS_ON_RTR) { 11061#if 0 11062 printf("Tag 0x%04x is running\n", 11063 pending_io->scsiio.tag_num); 11064#endif 11065 continue; 11066 } 11067 11068 switch (ctl_check_ooa(lun, pending_io, 11069 (union ctl_io *)TAILQ_PREV( 11070 &pending_io->io_hdr, ctl_ooaq, 11071 ooa_links))) { 11072 11073 case CTL_ACTION_BLOCK: 11074 TAILQ_INSERT_TAIL(&lun->blocked_queue, 11075 &pending_io->io_hdr, 11076 blocked_links); 11077 pending_io->io_hdr.flags |= 11078 CTL_FLAG_BLOCKED; 11079 break; 11080 case CTL_ACTION_PASS: 11081 case CTL_ACTION_SKIP: 11082 pending_io->io_hdr.flags |= 11083 CTL_FLAG_IS_WAS_ON_RTR; 11084 STAILQ_INSERT_TAIL( 11085 &ctl_softc->rtr_queue, 11086 &pending_io->io_hdr, links); 11087 break; 11088 case CTL_ACTION_OVERLAP: 11089 ctl_set_overlapped_cmd( 11090 (struct ctl_scsiio *)pending_io); 11091 ctl_done_lock(pending_io, 11092 /*have_lock*/ 1); 11093 break; 11094 case CTL_ACTION_OVERLAP_TAG: 11095 ctl_set_overlapped_tag( 11096 (struct ctl_scsiio *)pending_io, 11097 pending_io->scsiio.tag_num & 0xff); 11098 ctl_done_lock(pending_io, 11099 /*have_lock*/ 1); 11100 break; 11101 case CTL_ACTION_ERROR: 11102 default: 11103 ctl_set_internal_failure( 11104 (struct ctl_scsiio *)pending_io, 11105 0, // sks_valid 11106 0); //retry count 11107 ctl_done_lock(pending_io, 11108 /*have_lock*/ 1); 11109 break; 11110 } 11111 } 11112 11113 /* 11114 * Build Unit Attention 11115 */ 11116 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11117 lun->pending_sense[i].ua_pending |= 11118 CTL_UA_ASYM_ACC_CHANGE; 11119 } 11120 } else { 11121 panic("Unhandled HA mode failover, LUN flags = %#x, " 11122 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 11123 } 11124 } 11125 ctl_pause_rtr = 0; 11126 mtx_unlock(&ctl_softc->ctl_lock); 11127} 11128 11129static int 11130ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 11131{ 11132 struct ctl_lun *lun; 11133 struct ctl_cmd_entry *entry; 11134 uint8_t opcode; 11135 uint32_t initidx, targ_lun; 11136 int retval; 11137 11138 retval = 0; 11139 11140 lun = NULL; 11141 11142 opcode = ctsio->cdb[0]; 11143 11144 mtx_lock(&ctl_softc->ctl_lock); 11145 11146 targ_lun = ctsio->io_hdr.nexus.targ_lun; 11147 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 11148 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 11149 if ((targ_lun < CTL_MAX_LUNS) 11150 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 11151 lun = ctl_softc->ctl_luns[targ_lun]; 11152 /* 11153 * If the LUN is invalid, pretend that it doesn't exist. 11154 * It will go away as soon as all pending I/O has been 11155 * completed. 11156 */ 11157 if (lun->flags & CTL_LUN_DISABLED) { 11158 lun = NULL; 11159 } else { 11160 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 11161 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 11162 lun->be_lun; 11163 if (lun->be_lun->lun_type == T_PROCESSOR) { 11164 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 11165 } 11166 } 11167 } else { 11168 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 11169 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 11170 } 11171 11172 entry = &ctl_cmd_table[opcode]; 11173 11174 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 11175 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 11176 11177 /* 11178 * Check to see whether we can send this command to LUNs that don't 11179 * exist. This should pretty much only be the case for inquiry 11180 * and request sense. Further checks, below, really require having 11181 * a LUN, so we can't really check the command anymore. Just put 11182 * it on the rtr queue. 11183 */ 11184 if (lun == NULL) { 11185 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11186 goto queue_rtr; 11187 11188 ctl_set_unsupported_lun(ctsio); 11189 mtx_unlock(&ctl_softc->ctl_lock); 11190 ctl_done((union ctl_io *)ctsio); 11191 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 11192 goto bailout; 11193 } else { 11194 /* 11195 * Every I/O goes into the OOA queue for a particular LUN, and 11196 * stays there until completion. 11197 */ 11198 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 11199 11200 /* 11201 * Make sure we support this particular command on this LUN. 11202 * e.g., we don't support writes to the control LUN. 11203 */ 11204 switch (lun->be_lun->lun_type) { 11205 case T_PROCESSOR: 11206 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 11207 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11208 == 0)) { 11209 ctl_set_invalid_opcode(ctsio); 11210 mtx_unlock(&ctl_softc->ctl_lock); 11211 ctl_done((union ctl_io *)ctsio); 11212 goto bailout; 11213 } 11214 break; 11215 case T_DIRECT: 11216 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 11217 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11218 == 0)){ 11219 ctl_set_invalid_opcode(ctsio); 11220 mtx_unlock(&ctl_softc->ctl_lock); 11221 ctl_done((union ctl_io *)ctsio); 11222 goto bailout; 11223 } 11224 break; 11225 default: 11226 printf("Unsupported CTL LUN type %d\n", 11227 lun->be_lun->lun_type); 11228 panic("Unsupported CTL LUN type %d\n", 11229 lun->be_lun->lun_type); 11230 break; /* NOTREACHED */ 11231 } 11232 } 11233 11234 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 11235 11236 /* 11237 * If we've got a request sense, it'll clear the contingent 11238 * allegiance condition. Otherwise, if we have a CA condition for 11239 * this initiator, clear it, because it sent down a command other 11240 * than request sense. 11241 */ 11242 if ((opcode != REQUEST_SENSE) 11243 && (ctl_is_set(lun->have_ca, initidx))) 11244 ctl_clear_mask(lun->have_ca, initidx); 11245 11246 /* 11247 * If the command has this flag set, it handles its own unit 11248 * attention reporting, we shouldn't do anything. Otherwise we 11249 * check for any pending unit attentions, and send them back to the 11250 * initiator. We only do this when a command initially comes in, 11251 * not when we pull it off the blocked queue. 11252 * 11253 * According to SAM-3, section 5.3.2, the order that things get 11254 * presented back to the host is basically unit attentions caused 11255 * by some sort of reset event, busy status, reservation conflicts 11256 * or task set full, and finally any other status. 11257 * 11258 * One issue here is that some of the unit attentions we report 11259 * don't fall into the "reset" category (e.g. "reported luns data 11260 * has changed"). So reporting it here, before the reservation 11261 * check, may be technically wrong. I guess the only thing to do 11262 * would be to check for and report the reset events here, and then 11263 * check for the other unit attention types after we check for a 11264 * reservation conflict. 11265 * 11266 * XXX KDM need to fix this 11267 */ 11268 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 11269 ctl_ua_type ua_type; 11270 11271 ua_type = lun->pending_sense[initidx].ua_pending; 11272 if (ua_type != CTL_UA_NONE) { 11273 scsi_sense_data_type sense_format; 11274 11275 if (lun != NULL) 11276 sense_format = (lun->flags & 11277 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 11278 SSD_TYPE_FIXED; 11279 else 11280 sense_format = SSD_TYPE_FIXED; 11281 11282 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 11283 sense_format); 11284 if (ua_type != CTL_UA_NONE) { 11285 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 11286 ctsio->io_hdr.status = CTL_SCSI_ERROR | 11287 CTL_AUTOSENSE; 11288 ctsio->sense_len = SSD_FULL_SIZE; 11289 lun->pending_sense[initidx].ua_pending &= 11290 ~ua_type; 11291 mtx_unlock(&ctl_softc->ctl_lock); 11292 ctl_done((union ctl_io *)ctsio); 11293 goto bailout; 11294 } 11295 } 11296 } 11297 11298 11299 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 11300 mtx_unlock(&ctl_softc->ctl_lock); 11301 ctl_done((union ctl_io *)ctsio); 11302 goto bailout; 11303 } 11304 11305 /* 11306 * XXX CHD this is where we want to send IO to other side if 11307 * this LUN is secondary on this SC. We will need to make a copy 11308 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 11309 * the copy we send as FROM_OTHER. 11310 * We also need to stuff the address of the original IO so we can 11311 * find it easily. Something similar will need be done on the other 11312 * side so when we are done we can find the copy. 11313 */ 11314 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 11315 union ctl_ha_msg msg_info; 11316 int isc_retval; 11317 11318 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11319 11320 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 11321 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 11322#if 0 11323 printf("1. ctsio %p\n", ctsio); 11324#endif 11325 msg_info.hdr.serializing_sc = NULL; 11326 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 11327 msg_info.scsi.tag_num = ctsio->tag_num; 11328 msg_info.scsi.tag_type = ctsio->tag_type; 11329 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 11330 11331 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11332 11333 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11334 (void *)&msg_info, sizeof(msg_info), 0)) > 11335 CTL_HA_STATUS_SUCCESS) { 11336 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 11337 isc_retval); 11338 printf("CTL:opcode is %x\n",opcode); 11339 } else { 11340#if 0 11341 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 11342#endif 11343 } 11344 11345 /* 11346 * XXX KDM this I/O is off the incoming queue, but hasn't 11347 * been inserted on any other queue. We may need to come 11348 * up with a holding queue while we wait for serialization 11349 * so that we have an idea of what we're waiting for from 11350 * the other side. 11351 */ 11352 goto bailout_unlock; 11353 } 11354 11355 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 11356 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 11357 ctl_ooaq, ooa_links))) { 11358 case CTL_ACTION_BLOCK: 11359 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 11360 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 11361 blocked_links); 11362 goto bailout_unlock; 11363 break; /* NOTREACHED */ 11364 case CTL_ACTION_PASS: 11365 case CTL_ACTION_SKIP: 11366 goto queue_rtr; 11367 break; /* NOTREACHED */ 11368 case CTL_ACTION_OVERLAP: 11369 ctl_set_overlapped_cmd(ctsio); 11370 mtx_unlock(&ctl_softc->ctl_lock); 11371 ctl_done((union ctl_io *)ctsio); 11372 goto bailout; 11373 break; /* NOTREACHED */ 11374 case CTL_ACTION_OVERLAP_TAG: 11375 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 11376 mtx_unlock(&ctl_softc->ctl_lock); 11377 ctl_done((union ctl_io *)ctsio); 11378 goto bailout; 11379 break; /* NOTREACHED */ 11380 case CTL_ACTION_ERROR: 11381 default: 11382 ctl_set_internal_failure(ctsio, 11383 /*sks_valid*/ 0, 11384 /*retry_count*/ 0); 11385 mtx_unlock(&ctl_softc->ctl_lock); 11386 ctl_done((union ctl_io *)ctsio); 11387 goto bailout; 11388 break; /* NOTREACHED */ 11389 } 11390 11391 goto bailout_unlock; 11392 11393queue_rtr: 11394 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11395 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 11396 11397bailout_unlock: 11398 mtx_unlock(&ctl_softc->ctl_lock); 11399 11400bailout: 11401 return (retval); 11402} 11403 11404static int 11405ctl_scsiio(struct ctl_scsiio *ctsio) 11406{ 11407 int retval; 11408 struct ctl_cmd_entry *entry; 11409 11410 retval = CTL_RETVAL_COMPLETE; 11411 11412 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 11413 11414 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11415 11416 /* 11417 * If this I/O has been aborted, just send it straight to 11418 * ctl_done() without executing it. 11419 */ 11420 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11421 ctl_done((union ctl_io *)ctsio); 11422 goto bailout; 11423 } 11424 11425 /* 11426 * All the checks should have been handled by ctl_scsiio_precheck(). 11427 * We should be clear now to just execute the I/O. 11428 */ 11429 retval = entry->execute(ctsio); 11430 11431bailout: 11432 return (retval); 11433} 11434 11435/* 11436 * Since we only implement one target right now, a bus reset simply resets 11437 * our single target. 11438 */ 11439static int 11440ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11441{ 11442 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11443} 11444 11445static int 11446ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11447 ctl_ua_type ua_type) 11448{ 11449 struct ctl_lun *lun; 11450 int retval; 11451 11452 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11453 union ctl_ha_msg msg_info; 11454 11455 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11456 msg_info.hdr.nexus = io->io_hdr.nexus; 11457 if (ua_type==CTL_UA_TARG_RESET) 11458 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11459 else 11460 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11461 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11462 msg_info.hdr.original_sc = NULL; 11463 msg_info.hdr.serializing_sc = NULL; 11464 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11465 (void *)&msg_info, sizeof(msg_info), 0)) { 11466 } 11467 } 11468 retval = 0; 11469 11470 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11471 retval += ctl_lun_reset(lun, io, ua_type); 11472 11473 return (retval); 11474} 11475 11476/* 11477 * The LUN should always be set. The I/O is optional, and is used to 11478 * distinguish between I/Os sent by this initiator, and by other 11479 * initiators. We set unit attention for initiators other than this one. 11480 * SAM-3 is vague on this point. It does say that a unit attention should 11481 * be established for other initiators when a LUN is reset (see section 11482 * 5.7.3), but it doesn't specifically say that the unit attention should 11483 * be established for this particular initiator when a LUN is reset. Here 11484 * is the relevant text, from SAM-3 rev 8: 11485 * 11486 * 5.7.2 When a SCSI initiator port aborts its own tasks 11487 * 11488 * When a SCSI initiator port causes its own task(s) to be aborted, no 11489 * notification that the task(s) have been aborted shall be returned to 11490 * the SCSI initiator port other than the completion response for the 11491 * command or task management function action that caused the task(s) to 11492 * be aborted and notification(s) associated with related effects of the 11493 * action (e.g., a reset unit attention condition). 11494 * 11495 * XXX KDM for now, we're setting unit attention for all initiators. 11496 */ 11497static int 11498ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11499{ 11500 union ctl_io *xio; 11501#if 0 11502 uint32_t initindex; 11503#endif 11504 int i; 11505 11506 /* 11507 * Run through the OOA queue and abort each I/O. 11508 */ 11509#if 0 11510 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11511#endif 11512 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11513 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11514 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11515 } 11516 11517 /* 11518 * This version sets unit attention for every 11519 */ 11520#if 0 11521 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11522 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11523 if (initindex == i) 11524 continue; 11525 lun->pending_sense[i].ua_pending |= ua_type; 11526 } 11527#endif 11528 11529 /* 11530 * A reset (any kind, really) clears reservations established with 11531 * RESERVE/RELEASE. It does not clear reservations established 11532 * with PERSISTENT RESERVE OUT, but we don't support that at the 11533 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11534 * reservations made with the RESERVE/RELEASE commands, because 11535 * those commands are obsolete in SPC-3. 11536 */ 11537 lun->flags &= ~CTL_LUN_RESERVED; 11538 11539 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11540 ctl_clear_mask(lun->have_ca, i); 11541 lun->pending_sense[i].ua_pending |= ua_type; 11542 } 11543 11544 return (0); 11545} 11546 11547static int 11548ctl_abort_task(union ctl_io *io) 11549{ 11550 union ctl_io *xio; 11551 struct ctl_lun *lun; 11552 struct ctl_softc *ctl_softc; 11553#if 0 11554 struct sbuf sb; 11555 char printbuf[128]; 11556#endif 11557 int found; 11558 uint32_t targ_lun; 11559 11560 ctl_softc = control_softc; 11561 found = 0; 11562 11563 /* 11564 * Look up the LUN. 11565 */ 11566 targ_lun = io->io_hdr.nexus.targ_lun; 11567 if (io->io_hdr.nexus.lun_map_fn != NULL) 11568 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11569 if ((targ_lun < CTL_MAX_LUNS) 11570 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11571 lun = ctl_softc->ctl_luns[targ_lun]; 11572 else 11573 goto bailout; 11574 11575#if 0 11576 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11577 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11578#endif 11579 11580 /* 11581 * Run through the OOA queue and attempt to find the given I/O. 11582 * The target port, initiator ID, tag type and tag number have to 11583 * match the values that we got from the initiator. If we have an 11584 * untagged command to abort, simply abort the first untagged command 11585 * we come to. We only allow one untagged command at a time of course. 11586 */ 11587#if 0 11588 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11589#endif 11590 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11591 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11592#if 0 11593 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11594 11595 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11596 lun->lun, xio->scsiio.tag_num, 11597 xio->scsiio.tag_type, 11598 (xio->io_hdr.blocked_links.tqe_prev 11599 == NULL) ? "" : " BLOCKED", 11600 (xio->io_hdr.flags & 11601 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11602 (xio->io_hdr.flags & 11603 CTL_FLAG_ABORT) ? " ABORT" : "", 11604 (xio->io_hdr.flags & 11605 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11606 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11607 sbuf_finish(&sb); 11608 printf("%s\n", sbuf_data(&sb)); 11609#endif 11610 11611 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11612 && (xio->io_hdr.nexus.initid.id == 11613 io->io_hdr.nexus.initid.id)) { 11614 /* 11615 * If the abort says that the task is untagged, the 11616 * task in the queue must be untagged. Otherwise, 11617 * we just check to see whether the tag numbers 11618 * match. This is because the QLogic firmware 11619 * doesn't pass back the tag type in an abort 11620 * request. 11621 */ 11622#if 0 11623 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11624 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11625 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11626#endif 11627 /* 11628 * XXX KDM we've got problems with FC, because it 11629 * doesn't send down a tag type with aborts. So we 11630 * can only really go by the tag number... 11631 * This may cause problems with parallel SCSI. 11632 * Need to figure that out!! 11633 */ 11634 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11635 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11636 found = 1; 11637 if ((io->io_hdr.flags & 11638 CTL_FLAG_FROM_OTHER_SC) == 0 && 11639 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11640 union ctl_ha_msg msg_info; 11641 11642 io->io_hdr.flags |= 11643 CTL_FLAG_SENT_2OTHER_SC; 11644 msg_info.hdr.nexus = io->io_hdr.nexus; 11645 msg_info.task.task_action = 11646 CTL_TASK_ABORT_TASK; 11647 msg_info.task.tag_num = 11648 io->taskio.tag_num; 11649 msg_info.task.tag_type = 11650 io->taskio.tag_type; 11651 msg_info.hdr.msg_type = 11652 CTL_MSG_MANAGE_TASKS; 11653 msg_info.hdr.original_sc = NULL; 11654 msg_info.hdr.serializing_sc = NULL; 11655#if 0 11656 printf("Sent Abort to other side\n"); 11657#endif 11658 if (CTL_HA_STATUS_SUCCESS != 11659 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11660 (void *)&msg_info, 11661 sizeof(msg_info), 0)) { 11662 } 11663 } 11664#if 0 11665 printf("ctl_abort_task: found I/O to abort\n"); 11666#endif 11667 break; 11668 } 11669 } 11670 } 11671 11672bailout: 11673 11674 if (found == 0) { 11675 /* 11676 * This isn't really an error. It's entirely possible for 11677 * the abort and command completion to cross on the wire. 11678 * This is more of an informative/diagnostic error. 11679 */ 11680#if 0 11681 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11682 "%d:%d:%d:%d tag %d type %d\n", 11683 io->io_hdr.nexus.initid.id, 11684 io->io_hdr.nexus.targ_port, 11685 io->io_hdr.nexus.targ_target.id, 11686 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11687 io->taskio.tag_type); 11688#endif 11689 return (1); 11690 } else 11691 return (0); 11692} 11693 11694/* 11695 * This routine cannot block! It must be callable from an interrupt 11696 * handler as well as from the work thread. 11697 */ 11698static void 11699ctl_run_task_queue(struct ctl_softc *ctl_softc) 11700{ 11701 union ctl_io *io, *next_io; 11702 11703 mtx_assert(&ctl_softc->ctl_lock, MA_OWNED); 11704 11705 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 11706 11707 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 11708 io != NULL; io = next_io) { 11709 int retval; 11710 const char *task_desc; 11711 11712 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 11713 11714 retval = 0; 11715 11716 switch (io->io_hdr.io_type) { 11717 case CTL_IO_TASK: { 11718 task_desc = ctl_scsi_task_string(&io->taskio); 11719 if (task_desc != NULL) { 11720#ifdef NEEDTOPORT 11721 csevent_log(CSC_CTL | CSC_SHELF_SW | 11722 CTL_TASK_REPORT, 11723 csevent_LogType_Trace, 11724 csevent_Severity_Information, 11725 csevent_AlertLevel_Green, 11726 csevent_FRU_Firmware, 11727 csevent_FRU_Unknown, 11728 "CTL: received task: %s",task_desc); 11729#endif 11730 } else { 11731#ifdef NEEDTOPORT 11732 csevent_log(CSC_CTL | CSC_SHELF_SW | 11733 CTL_TASK_REPORT, 11734 csevent_LogType_Trace, 11735 csevent_Severity_Information, 11736 csevent_AlertLevel_Green, 11737 csevent_FRU_Firmware, 11738 csevent_FRU_Unknown, 11739 "CTL: received unknown task " 11740 "type: %d (%#x)", 11741 io->taskio.task_action, 11742 io->taskio.task_action); 11743#endif 11744 } 11745 switch (io->taskio.task_action) { 11746 case CTL_TASK_ABORT_TASK: 11747 retval = ctl_abort_task(io); 11748 break; 11749 case CTL_TASK_ABORT_TASK_SET: 11750 break; 11751 case CTL_TASK_CLEAR_ACA: 11752 break; 11753 case CTL_TASK_CLEAR_TASK_SET: 11754 break; 11755 case CTL_TASK_LUN_RESET: { 11756 struct ctl_lun *lun; 11757 uint32_t targ_lun; 11758 int retval; 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 11764 if ((targ_lun < CTL_MAX_LUNS) 11765 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11766 lun = ctl_softc->ctl_luns[targ_lun]; 11767 else { 11768 retval = 1; 11769 break; 11770 } 11771 11772 if (!(io->io_hdr.flags & 11773 CTL_FLAG_FROM_OTHER_SC)) { 11774 union ctl_ha_msg msg_info; 11775 11776 io->io_hdr.flags |= 11777 CTL_FLAG_SENT_2OTHER_SC; 11778 msg_info.hdr.msg_type = 11779 CTL_MSG_MANAGE_TASKS; 11780 msg_info.hdr.nexus = io->io_hdr.nexus; 11781 msg_info.task.task_action = 11782 CTL_TASK_LUN_RESET; 11783 msg_info.hdr.original_sc = NULL; 11784 msg_info.hdr.serializing_sc = NULL; 11785 if (CTL_HA_STATUS_SUCCESS != 11786 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11787 (void *)&msg_info, 11788 sizeof(msg_info), 0)) { 11789 } 11790 } 11791 11792 retval = ctl_lun_reset(lun, io, 11793 CTL_UA_LUN_RESET); 11794 break; 11795 } 11796 case CTL_TASK_TARGET_RESET: 11797 retval = ctl_target_reset(ctl_softc, io, 11798 CTL_UA_TARG_RESET); 11799 break; 11800 case CTL_TASK_BUS_RESET: 11801 retval = ctl_bus_reset(ctl_softc, io); 11802 break; 11803 case CTL_TASK_PORT_LOGIN: 11804 break; 11805 case CTL_TASK_PORT_LOGOUT: 11806 break; 11807 default: 11808 printf("ctl_run_task_queue: got unknown task " 11809 "management event %d\n", 11810 io->taskio.task_action); 11811 break; 11812 } 11813 if (retval == 0) 11814 io->io_hdr.status = CTL_SUCCESS; 11815 else 11816 io->io_hdr.status = CTL_ERROR; 11817 11818 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11819 ctl_io_hdr, links); 11820 /* 11821 * This will queue this I/O to the done queue, but the 11822 * work thread won't be able to process it until we 11823 * return and the lock is released. 11824 */ 11825 ctl_done_lock(io, /*have_lock*/ 1); 11826 break; 11827 } 11828 default: { 11829 11830 printf("%s: invalid I/O type %d msg %d cdb %x" 11831 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11832 __func__, io->io_hdr.io_type, 11833 io->io_hdr.msg_type, io->scsiio.cdb[0], 11834 (uintmax_t)io->io_hdr.nexus.initid.id, 11835 io->io_hdr.nexus.targ_port, 11836 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11837 io->io_hdr.nexus.targ_lun /* XXX */, 11838 (io->io_hdr.io_type == CTL_IO_TASK) ? 11839 io->taskio.tag_num : io->scsiio.tag_num); 11840 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11841 ctl_io_hdr, links); 11842 ctl_free_io(io); 11843 break; 11844 } 11845 } 11846 } 11847 11848 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11849} 11850 11851/* 11852 * For HA operation. Handle commands that come in from the other 11853 * controller. 11854 */ 11855static void 11856ctl_handle_isc(union ctl_io *io) 11857{ 11858 int free_io; 11859 struct ctl_lun *lun; 11860 struct ctl_softc *ctl_softc; 11861 uint32_t targ_lun; 11862 11863 ctl_softc = control_softc; 11864 11865 targ_lun = io->io_hdr.nexus.targ_lun; 11866 if (io->io_hdr.nexus.lun_map_fn != NULL) 11867 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11868 lun = ctl_softc->ctl_luns[targ_lun]; 11869 11870 switch (io->io_hdr.msg_type) { 11871 case CTL_MSG_SERIALIZE: 11872 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11873 /*have_lock*/ 0); 11874 break; 11875 case CTL_MSG_R2R: { 11876 uint8_t opcode; 11877 struct ctl_cmd_entry *entry; 11878 11879 /* 11880 * This is only used in SER_ONLY mode. 11881 */ 11882 free_io = 0; 11883 opcode = io->scsiio.cdb[0]; 11884 entry = &ctl_cmd_table[opcode]; 11885 mtx_lock(&ctl_softc->ctl_lock); 11886 if (ctl_scsiio_lun_check(ctl_softc, lun, 11887 entry, (struct ctl_scsiio *)io) != 0) { 11888 ctl_done_lock(io, /*have_lock*/ 1); 11889 mtx_unlock(&ctl_softc->ctl_lock); 11890 break; 11891 } 11892 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11893 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11894 &io->io_hdr, links); 11895 mtx_unlock(&ctl_softc->ctl_lock); 11896 break; 11897 } 11898 case CTL_MSG_FINISH_IO: 11899 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11900 free_io = 0; 11901 ctl_done_lock(io, /*have_lock*/ 0); 11902 } else { 11903 free_io = 1; 11904 mtx_lock(&ctl_softc->ctl_lock); 11905 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11906 ooa_links); 11907 STAILQ_REMOVE(&ctl_softc->task_queue, 11908 &io->io_hdr, ctl_io_hdr, links); 11909 ctl_check_blocked(lun); 11910 mtx_unlock(&ctl_softc->ctl_lock); 11911 } 11912 break; 11913 case CTL_MSG_PERS_ACTION: 11914 ctl_hndl_per_res_out_on_other_sc( 11915 (union ctl_ha_msg *)&io->presio.pr_msg); 11916 free_io = 1; 11917 break; 11918 case CTL_MSG_BAD_JUJU: 11919 free_io = 0; 11920 ctl_done_lock(io, /*have_lock*/ 0); 11921 break; 11922 case CTL_MSG_DATAMOVE: 11923 /* Only used in XFER mode */ 11924 free_io = 0; 11925 ctl_datamove_remote(io); 11926 break; 11927 case CTL_MSG_DATAMOVE_DONE: 11928 /* Only used in XFER mode */ 11929 free_io = 0; 11930 io->scsiio.be_move_done(io); 11931 break; 11932 default: 11933 free_io = 1; 11934 printf("%s: Invalid message type %d\n", 11935 __func__, io->io_hdr.msg_type); 11936 break; 11937 } 11938 if (free_io) 11939 ctl_free_io(io); 11940 11941} 11942 11943 11944/* 11945 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11946 * there is no match. 11947 */ 11948static ctl_lun_error_pattern 11949ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11950{ 11951 struct ctl_cmd_entry *entry; 11952 ctl_lun_error_pattern filtered_pattern, pattern; 11953 uint8_t opcode; 11954 11955 pattern = desc->error_pattern; 11956 11957 /* 11958 * XXX KDM we need more data passed into this function to match a 11959 * custom pattern, and we actually need to implement custom pattern 11960 * matching. 11961 */ 11962 if (pattern & CTL_LUN_PAT_CMD) 11963 return (CTL_LUN_PAT_CMD); 11964 11965 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11966 return (CTL_LUN_PAT_ANY); 11967 11968 opcode = ctsio->cdb[0]; 11969 entry = &ctl_cmd_table[opcode]; 11970 11971 filtered_pattern = entry->pattern & pattern; 11972 11973 /* 11974 * If the user requested specific flags in the pattern (e.g. 11975 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11976 * flags. 11977 * 11978 * If the user did not specify any flags, it doesn't matter whether 11979 * or not the command supports the flags. 11980 */ 11981 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11982 (pattern & ~CTL_LUN_PAT_MASK)) 11983 return (CTL_LUN_PAT_NONE); 11984 11985 /* 11986 * If the user asked for a range check, see if the requested LBA 11987 * range overlaps with this command's LBA range. 11988 */ 11989 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11990 uint64_t lba1; 11991 uint32_t len1; 11992 ctl_action action; 11993 int retval; 11994 11995 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11996 if (retval != 0) 11997 return (CTL_LUN_PAT_NONE); 11998 11999 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 12000 desc->lba_range.len); 12001 /* 12002 * A "pass" means that the LBA ranges don't overlap, so 12003 * this doesn't match the user's range criteria. 12004 */ 12005 if (action == CTL_ACTION_PASS) 12006 return (CTL_LUN_PAT_NONE); 12007 } 12008 12009 return (filtered_pattern); 12010} 12011 12012static void 12013ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 12014{ 12015 struct ctl_error_desc *desc, *desc2; 12016 12017 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 12018 12019 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 12020 ctl_lun_error_pattern pattern; 12021 /* 12022 * Check to see whether this particular command matches 12023 * the pattern in the descriptor. 12024 */ 12025 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 12026 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 12027 continue; 12028 12029 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 12030 case CTL_LUN_INJ_ABORTED: 12031 ctl_set_aborted(&io->scsiio); 12032 break; 12033 case CTL_LUN_INJ_MEDIUM_ERR: 12034 ctl_set_medium_error(&io->scsiio); 12035 break; 12036 case CTL_LUN_INJ_UA: 12037 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 12038 * OCCURRED */ 12039 ctl_set_ua(&io->scsiio, 0x29, 0x00); 12040 break; 12041 case CTL_LUN_INJ_CUSTOM: 12042 /* 12043 * We're assuming the user knows what he is doing. 12044 * Just copy the sense information without doing 12045 * checks. 12046 */ 12047 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 12048 ctl_min(sizeof(desc->custom_sense), 12049 sizeof(io->scsiio.sense_data))); 12050 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 12051 io->scsiio.sense_len = SSD_FULL_SIZE; 12052 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 12053 break; 12054 case CTL_LUN_INJ_NONE: 12055 default: 12056 /* 12057 * If this is an error injection type we don't know 12058 * about, clear the continuous flag (if it is set) 12059 * so it will get deleted below. 12060 */ 12061 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 12062 break; 12063 } 12064 /* 12065 * By default, each error injection action is a one-shot 12066 */ 12067 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 12068 continue; 12069 12070 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 12071 12072 free(desc, M_CTL); 12073 } 12074} 12075 12076#ifdef CTL_IO_DELAY 12077static void 12078ctl_datamove_timer_wakeup(void *arg) 12079{ 12080 union ctl_io *io; 12081 12082 io = (union ctl_io *)arg; 12083 12084 ctl_datamove(io); 12085} 12086#endif /* CTL_IO_DELAY */ 12087 12088void 12089ctl_datamove(union ctl_io *io) 12090{ 12091 void (*fe_datamove)(union ctl_io *io); 12092 12093 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 12094 12095 CTL_DEBUG_PRINT(("ctl_datamove\n")); 12096 12097#ifdef CTL_TIME_IO 12098 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12099 char str[256]; 12100 char path_str[64]; 12101 struct sbuf sb; 12102 12103 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12104 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12105 12106 sbuf_cat(&sb, path_str); 12107 switch (io->io_hdr.io_type) { 12108 case CTL_IO_SCSI: 12109 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12110 sbuf_printf(&sb, "\n"); 12111 sbuf_cat(&sb, path_str); 12112 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12113 io->scsiio.tag_num, io->scsiio.tag_type); 12114 break; 12115 case CTL_IO_TASK: 12116 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12117 "Tag Type: %d\n", io->taskio.task_action, 12118 io->taskio.tag_num, io->taskio.tag_type); 12119 break; 12120 default: 12121 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12122 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12123 break; 12124 } 12125 sbuf_cat(&sb, path_str); 12126 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 12127 (intmax_t)time_uptime - io->io_hdr.start_time); 12128 sbuf_finish(&sb); 12129 printf("%s", sbuf_data(&sb)); 12130 } 12131#endif /* CTL_TIME_IO */ 12132 12133 mtx_lock(&control_softc->ctl_lock); 12134#ifdef CTL_IO_DELAY 12135 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12136 struct ctl_lun *lun; 12137 12138 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12139 12140 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12141 } else { 12142 struct ctl_lun *lun; 12143 12144 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12145 if ((lun != NULL) 12146 && (lun->delay_info.datamove_delay > 0)) { 12147 struct callout *callout; 12148 12149 callout = (struct callout *)&io->io_hdr.timer_bytes; 12150 callout_init(callout, /*mpsafe*/ 1); 12151 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12152 callout_reset(callout, 12153 lun->delay_info.datamove_delay * hz, 12154 ctl_datamove_timer_wakeup, io); 12155 if (lun->delay_info.datamove_type == 12156 CTL_DELAY_TYPE_ONESHOT) 12157 lun->delay_info.datamove_delay = 0; 12158 mtx_unlock(&control_softc->ctl_lock); 12159 return; 12160 } 12161 } 12162#endif 12163 /* 12164 * If we have any pending task management commands, process them 12165 * first. This is necessary to eliminate a race condition with the 12166 * FETD: 12167 * 12168 * - FETD submits a task management command, like an abort. 12169 * - Back end calls fe_datamove() to move the data for the aborted 12170 * command. The FETD can't really accept it, but if it did, it 12171 * would end up transmitting data for a command that the initiator 12172 * told us to abort. 12173 * 12174 * We close the race by processing all pending task management 12175 * commands here (we can't block!), and then check this I/O to see 12176 * if it has been aborted. If so, return it to the back end with 12177 * bad status, so the back end can say return an error to the back end 12178 * and then when the back end returns an error, we can return the 12179 * aborted command to the FETD, so it can clean up its resources. 12180 */ 12181 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 12182 ctl_run_task_queue(control_softc); 12183 12184 /* 12185 * This command has been aborted. Set the port status, so we fail 12186 * the data move. 12187 */ 12188 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12189 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 12190 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 12191 io->io_hdr.nexus.targ_port, 12192 (uintmax_t)io->io_hdr.nexus.targ_target.id, 12193 io->io_hdr.nexus.targ_lun); 12194 io->io_hdr.status = CTL_CMD_ABORTED; 12195 io->io_hdr.port_status = 31337; 12196 mtx_unlock(&control_softc->ctl_lock); 12197 /* 12198 * Note that the backend, in this case, will get the 12199 * callback in its context. In other cases it may get 12200 * called in the frontend's interrupt thread context. 12201 */ 12202 io->scsiio.be_move_done(io); 12203 return; 12204 } 12205 12206 /* 12207 * If we're in XFER mode and this I/O is from the other shelf 12208 * controller, we need to send the DMA to the other side to 12209 * actually transfer the data to/from the host. In serialize only 12210 * mode the transfer happens below CTL and ctl_datamove() is only 12211 * called on the machine that originally received the I/O. 12212 */ 12213 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 12214 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12215 union ctl_ha_msg msg; 12216 uint32_t sg_entries_sent; 12217 int do_sg_copy; 12218 int i; 12219 12220 memset(&msg, 0, sizeof(msg)); 12221 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 12222 msg.hdr.original_sc = io->io_hdr.original_sc; 12223 msg.hdr.serializing_sc = io; 12224 msg.hdr.nexus = io->io_hdr.nexus; 12225 msg.dt.flags = io->io_hdr.flags; 12226 /* 12227 * We convert everything into a S/G list here. We can't 12228 * pass by reference, only by value between controllers. 12229 * So we can't pass a pointer to the S/G list, only as many 12230 * S/G entries as we can fit in here. If it's possible for 12231 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 12232 * then we need to break this up into multiple transfers. 12233 */ 12234 if (io->scsiio.kern_sg_entries == 0) { 12235 msg.dt.kern_sg_entries = 1; 12236 /* 12237 * If this is in cached memory, flush the cache 12238 * before we send the DMA request to the other 12239 * controller. We want to do this in either the 12240 * read or the write case. The read case is 12241 * straightforward. In the write case, we want to 12242 * make sure nothing is in the local cache that 12243 * could overwrite the DMAed data. 12244 */ 12245 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12246 /* 12247 * XXX KDM use bus_dmamap_sync() here. 12248 */ 12249 } 12250 12251 /* 12252 * Convert to a physical address if this is a 12253 * virtual address. 12254 */ 12255 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 12256 msg.dt.sg_list[0].addr = 12257 io->scsiio.kern_data_ptr; 12258 } else { 12259 /* 12260 * XXX KDM use busdma here! 12261 */ 12262#if 0 12263 msg.dt.sg_list[0].addr = (void *) 12264 vtophys(io->scsiio.kern_data_ptr); 12265#endif 12266 } 12267 12268 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 12269 do_sg_copy = 0; 12270 } else { 12271 struct ctl_sg_entry *sgl; 12272 12273 do_sg_copy = 1; 12274 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 12275 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 12276 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12277 /* 12278 * XXX KDM use bus_dmamap_sync() here. 12279 */ 12280 } 12281 } 12282 12283 msg.dt.kern_data_len = io->scsiio.kern_data_len; 12284 msg.dt.kern_total_len = io->scsiio.kern_total_len; 12285 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 12286 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 12287 msg.dt.sg_sequence = 0; 12288 12289 /* 12290 * Loop until we've sent all of the S/G entries. On the 12291 * other end, we'll recompose these S/G entries into one 12292 * contiguous list before passing it to the 12293 */ 12294 for (sg_entries_sent = 0; sg_entries_sent < 12295 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 12296 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 12297 sizeof(msg.dt.sg_list[0])), 12298 msg.dt.kern_sg_entries - sg_entries_sent); 12299 12300 if (do_sg_copy != 0) { 12301 struct ctl_sg_entry *sgl; 12302 int j; 12303 12304 sgl = (struct ctl_sg_entry *) 12305 io->scsiio.kern_data_ptr; 12306 /* 12307 * If this is in cached memory, flush the cache 12308 * before we send the DMA request to the other 12309 * controller. We want to do this in either 12310 * the * read or the write case. The read 12311 * case is straightforward. In the write 12312 * case, we want to make sure nothing is 12313 * in the local cache that could overwrite 12314 * the DMAed data. 12315 */ 12316 12317 for (i = sg_entries_sent, j = 0; 12318 i < msg.dt.cur_sg_entries; i++, j++) { 12319 if ((io->io_hdr.flags & 12320 CTL_FLAG_NO_DATASYNC) == 0) { 12321 /* 12322 * XXX KDM use bus_dmamap_sync() 12323 */ 12324 } 12325 if ((io->io_hdr.flags & 12326 CTL_FLAG_BUS_ADDR) == 0) { 12327 /* 12328 * XXX KDM use busdma. 12329 */ 12330#if 0 12331 msg.dt.sg_list[j].addr =(void *) 12332 vtophys(sgl[i].addr); 12333#endif 12334 } else { 12335 msg.dt.sg_list[j].addr = 12336 sgl[i].addr; 12337 } 12338 msg.dt.sg_list[j].len = sgl[i].len; 12339 } 12340 } 12341 12342 sg_entries_sent += msg.dt.cur_sg_entries; 12343 if (sg_entries_sent >= msg.dt.kern_sg_entries) 12344 msg.dt.sg_last = 1; 12345 else 12346 msg.dt.sg_last = 0; 12347 12348 /* 12349 * XXX KDM drop and reacquire the lock here? 12350 */ 12351 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12352 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12353 /* 12354 * XXX do something here. 12355 */ 12356 } 12357 12358 msg.dt.sent_sg_entries = sg_entries_sent; 12359 } 12360 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12361 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 12362 ctl_failover_io(io, /*have_lock*/ 1); 12363 12364 } else { 12365 12366 /* 12367 * Lookup the fe_datamove() function for this particular 12368 * front end. 12369 */ 12370 fe_datamove = 12371 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12372 mtx_unlock(&control_softc->ctl_lock); 12373 12374 fe_datamove(io); 12375 } 12376} 12377 12378static void 12379ctl_send_datamove_done(union ctl_io *io, int have_lock) 12380{ 12381 union ctl_ha_msg msg; 12382 int isc_status; 12383 12384 memset(&msg, 0, sizeof(msg)); 12385 12386 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 12387 msg.hdr.original_sc = io; 12388 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 12389 msg.hdr.nexus = io->io_hdr.nexus; 12390 msg.hdr.status = io->io_hdr.status; 12391 msg.scsi.tag_num = io->scsiio.tag_num; 12392 msg.scsi.tag_type = io->scsiio.tag_type; 12393 msg.scsi.scsi_status = io->scsiio.scsi_status; 12394 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12395 sizeof(io->scsiio.sense_data)); 12396 msg.scsi.sense_len = io->scsiio.sense_len; 12397 msg.scsi.sense_residual = io->scsiio.sense_residual; 12398 msg.scsi.fetd_status = io->io_hdr.port_status; 12399 msg.scsi.residual = io->scsiio.residual; 12400 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12401 12402 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12403 ctl_failover_io(io, /*have_lock*/ have_lock); 12404 return; 12405 } 12406 12407 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 12408 if (isc_status > CTL_HA_STATUS_SUCCESS) { 12409 /* XXX do something if this fails */ 12410 } 12411 12412} 12413 12414/* 12415 * The DMA to the remote side is done, now we need to tell the other side 12416 * we're done so it can continue with its data movement. 12417 */ 12418static void 12419ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12420{ 12421 union ctl_io *io; 12422 12423 io = rq->context; 12424 12425 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12426 printf("%s: ISC DMA write failed with error %d", __func__, 12427 rq->ret); 12428 ctl_set_internal_failure(&io->scsiio, 12429 /*sks_valid*/ 1, 12430 /*retry_count*/ rq->ret); 12431 } 12432 12433 ctl_dt_req_free(rq); 12434 12435 /* 12436 * In this case, we had to malloc the memory locally. Free it. 12437 */ 12438 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12439 int i; 12440 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12441 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12442 } 12443 /* 12444 * The data is in local and remote memory, so now we need to send 12445 * status (good or back) back to the other side. 12446 */ 12447 ctl_send_datamove_done(io, /*have_lock*/ 0); 12448} 12449 12450/* 12451 * We've moved the data from the host/controller into local memory. Now we 12452 * need to push it over to the remote controller's memory. 12453 */ 12454static int 12455ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12456{ 12457 int retval; 12458 12459 retval = 0; 12460 12461 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12462 ctl_datamove_remote_write_cb); 12463 12464 return (retval); 12465} 12466 12467static void 12468ctl_datamove_remote_write(union ctl_io *io) 12469{ 12470 int retval; 12471 void (*fe_datamove)(union ctl_io *io); 12472 12473 /* 12474 * - Get the data from the host/HBA into local memory. 12475 * - DMA memory from the local controller to the remote controller. 12476 * - Send status back to the remote controller. 12477 */ 12478 12479 retval = ctl_datamove_remote_sgl_setup(io); 12480 if (retval != 0) 12481 return; 12482 12483 /* Switch the pointer over so the FETD knows what to do */ 12484 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12485 12486 /* 12487 * Use a custom move done callback, since we need to send completion 12488 * back to the other controller, not to the backend on this side. 12489 */ 12490 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12491 12492 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12493 12494 fe_datamove(io); 12495 12496 return; 12497 12498} 12499 12500static int 12501ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12502{ 12503#if 0 12504 char str[256]; 12505 char path_str[64]; 12506 struct sbuf sb; 12507#endif 12508 12509 /* 12510 * In this case, we had to malloc the memory locally. Free it. 12511 */ 12512 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12513 int i; 12514 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12515 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12516 } 12517 12518#if 0 12519 scsi_path_string(io, path_str, sizeof(path_str)); 12520 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12521 sbuf_cat(&sb, path_str); 12522 scsi_command_string(&io->scsiio, NULL, &sb); 12523 sbuf_printf(&sb, "\n"); 12524 sbuf_cat(&sb, path_str); 12525 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12526 io->scsiio.tag_num, io->scsiio.tag_type); 12527 sbuf_cat(&sb, path_str); 12528 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12529 io->io_hdr.flags, io->io_hdr.status); 12530 sbuf_finish(&sb); 12531 printk("%s", sbuf_data(&sb)); 12532#endif 12533 12534 12535 /* 12536 * The read is done, now we need to send status (good or bad) back 12537 * to the other side. 12538 */ 12539 ctl_send_datamove_done(io, /*have_lock*/ 0); 12540 12541 return (0); 12542} 12543 12544static void 12545ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12546{ 12547 union ctl_io *io; 12548 void (*fe_datamove)(union ctl_io *io); 12549 12550 io = rq->context; 12551 12552 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12553 printf("%s: ISC DMA read failed with error %d", __func__, 12554 rq->ret); 12555 ctl_set_internal_failure(&io->scsiio, 12556 /*sks_valid*/ 1, 12557 /*retry_count*/ rq->ret); 12558 } 12559 12560 ctl_dt_req_free(rq); 12561 12562 /* Switch the pointer over so the FETD knows what to do */ 12563 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12564 12565 /* 12566 * Use a custom move done callback, since we need to send completion 12567 * back to the other controller, not to the backend on this side. 12568 */ 12569 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12570 12571 /* XXX KDM add checks like the ones in ctl_datamove? */ 12572 12573 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12574 12575 fe_datamove(io); 12576} 12577 12578static int 12579ctl_datamove_remote_sgl_setup(union ctl_io *io) 12580{ 12581 struct ctl_sg_entry *local_sglist, *remote_sglist; 12582 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12583 struct ctl_softc *softc; 12584 int retval; 12585 int i; 12586 12587 retval = 0; 12588 softc = control_softc; 12589 12590 local_sglist = io->io_hdr.local_sglist; 12591 local_dma_sglist = io->io_hdr.local_dma_sglist; 12592 remote_sglist = io->io_hdr.remote_sglist; 12593 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12594 12595 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12596 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12597 local_sglist[i].len = remote_sglist[i].len; 12598 12599 /* 12600 * XXX Detect the situation where the RS-level I/O 12601 * redirector on the other side has already read the 12602 * data off of the AOR RS on this side, and 12603 * transferred it to remote (mirror) memory on the 12604 * other side. Since we already have the data in 12605 * memory here, we just need to use it. 12606 * 12607 * XXX KDM this can probably be removed once we 12608 * get the cache device code in and take the 12609 * current AOR implementation out. 12610 */ 12611#ifdef NEEDTOPORT 12612 if ((remote_sglist[i].addr >= 12613 (void *)vtophys(softc->mirr->addr)) 12614 && (remote_sglist[i].addr < 12615 ((void *)vtophys(softc->mirr->addr) + 12616 CacheMirrorOffset))) { 12617 local_sglist[i].addr = remote_sglist[i].addr - 12618 CacheMirrorOffset; 12619 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12620 CTL_FLAG_DATA_IN) 12621 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12622 } else { 12623 local_sglist[i].addr = remote_sglist[i].addr + 12624 CacheMirrorOffset; 12625 } 12626#endif 12627#if 0 12628 printf("%s: local %p, remote %p, len %d\n", 12629 __func__, local_sglist[i].addr, 12630 remote_sglist[i].addr, local_sglist[i].len); 12631#endif 12632 } 12633 } else { 12634 uint32_t len_to_go; 12635 12636 /* 12637 * In this case, we don't have automatically allocated 12638 * memory for this I/O on this controller. This typically 12639 * happens with internal CTL I/O -- e.g. inquiry, mode 12640 * sense, etc. Anything coming from RAIDCore will have 12641 * a mirror area available. 12642 */ 12643 len_to_go = io->scsiio.kern_data_len; 12644 12645 /* 12646 * Clear the no datasync flag, we have to use malloced 12647 * buffers. 12648 */ 12649 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12650 12651 /* 12652 * The difficult thing here is that the size of the various 12653 * S/G segments may be different than the size from the 12654 * remote controller. That'll make it harder when DMAing 12655 * the data back to the other side. 12656 */ 12657 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12658 sizeof(io->io_hdr.remote_sglist[0])) && 12659 (len_to_go > 0); i++) { 12660 local_sglist[i].len = ctl_min(len_to_go, 131072); 12661 CTL_SIZE_8B(local_dma_sglist[i].len, 12662 local_sglist[i].len); 12663 local_sglist[i].addr = 12664 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12665 12666 local_dma_sglist[i].addr = local_sglist[i].addr; 12667 12668 if (local_sglist[i].addr == NULL) { 12669 int j; 12670 12671 printf("malloc failed for %zd bytes!", 12672 local_dma_sglist[i].len); 12673 for (j = 0; j < i; j++) { 12674 free(local_sglist[j].addr, M_CTL); 12675 } 12676 ctl_set_internal_failure(&io->scsiio, 12677 /*sks_valid*/ 1, 12678 /*retry_count*/ 4857); 12679 retval = 1; 12680 goto bailout_error; 12681 12682 } 12683 /* XXX KDM do we need a sync here? */ 12684 12685 len_to_go -= local_sglist[i].len; 12686 } 12687 /* 12688 * Reset the number of S/G entries accordingly. The 12689 * original number of S/G entries is available in 12690 * rem_sg_entries. 12691 */ 12692 io->scsiio.kern_sg_entries = i; 12693 12694#if 0 12695 printf("%s: kern_sg_entries = %d\n", __func__, 12696 io->scsiio.kern_sg_entries); 12697 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12698 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12699 local_sglist[i].addr, local_sglist[i].len, 12700 local_dma_sglist[i].len); 12701#endif 12702 } 12703 12704 12705 return (retval); 12706 12707bailout_error: 12708 12709 ctl_send_datamove_done(io, /*have_lock*/ 0); 12710 12711 return (retval); 12712} 12713 12714static int 12715ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12716 ctl_ha_dt_cb callback) 12717{ 12718 struct ctl_ha_dt_req *rq; 12719 struct ctl_sg_entry *remote_sglist, *local_sglist; 12720 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12721 uint32_t local_used, remote_used, total_used; 12722 int retval; 12723 int i, j; 12724 12725 retval = 0; 12726 12727 rq = ctl_dt_req_alloc(); 12728 12729 /* 12730 * If we failed to allocate the request, and if the DMA didn't fail 12731 * anyway, set busy status. This is just a resource allocation 12732 * failure. 12733 */ 12734 if ((rq == NULL) 12735 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12736 ctl_set_busy(&io->scsiio); 12737 12738 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12739 12740 if (rq != NULL) 12741 ctl_dt_req_free(rq); 12742 12743 /* 12744 * The data move failed. We need to return status back 12745 * to the other controller. No point in trying to DMA 12746 * data to the remote controller. 12747 */ 12748 12749 ctl_send_datamove_done(io, /*have_lock*/ 0); 12750 12751 retval = 1; 12752 12753 goto bailout; 12754 } 12755 12756 local_sglist = io->io_hdr.local_sglist; 12757 local_dma_sglist = io->io_hdr.local_dma_sglist; 12758 remote_sglist = io->io_hdr.remote_sglist; 12759 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12760 local_used = 0; 12761 remote_used = 0; 12762 total_used = 0; 12763 12764 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12765 rq->ret = CTL_HA_STATUS_SUCCESS; 12766 rq->context = io; 12767 callback(rq); 12768 goto bailout; 12769 } 12770 12771 /* 12772 * Pull/push the data over the wire from/to the other controller. 12773 * This takes into account the possibility that the local and 12774 * remote sglists may not be identical in terms of the size of 12775 * the elements and the number of elements. 12776 * 12777 * One fundamental assumption here is that the length allocated for 12778 * both the local and remote sglists is identical. Otherwise, we've 12779 * essentially got a coding error of some sort. 12780 */ 12781 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12782 int isc_ret; 12783 uint32_t cur_len, dma_length; 12784 uint8_t *tmp_ptr; 12785 12786 rq->id = CTL_HA_DATA_CTL; 12787 rq->command = command; 12788 rq->context = io; 12789 12790 /* 12791 * Both pointers should be aligned. But it is possible 12792 * that the allocation length is not. They should both 12793 * also have enough slack left over at the end, though, 12794 * to round up to the next 8 byte boundary. 12795 */ 12796 cur_len = ctl_min(local_sglist[i].len - local_used, 12797 remote_sglist[j].len - remote_used); 12798 12799 /* 12800 * In this case, we have a size issue and need to decrease 12801 * the size, except in the case where we actually have less 12802 * than 8 bytes left. In that case, we need to increase 12803 * the DMA length to get the last bit. 12804 */ 12805 if ((cur_len & 0x7) != 0) { 12806 if (cur_len > 0x7) { 12807 cur_len = cur_len - (cur_len & 0x7); 12808 dma_length = cur_len; 12809 } else { 12810 CTL_SIZE_8B(dma_length, cur_len); 12811 } 12812 12813 } else 12814 dma_length = cur_len; 12815 12816 /* 12817 * If we had to allocate memory for this I/O, instead of using 12818 * the non-cached mirror memory, we'll need to flush the cache 12819 * before trying to DMA to the other controller. 12820 * 12821 * We could end up doing this multiple times for the same 12822 * segment if we have a larger local segment than remote 12823 * segment. That shouldn't be an issue. 12824 */ 12825 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12826 /* 12827 * XXX KDM use bus_dmamap_sync() here. 12828 */ 12829 } 12830 12831 rq->size = dma_length; 12832 12833 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12834 tmp_ptr += local_used; 12835 12836 /* Use physical addresses when talking to ISC hardware */ 12837 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12838 /* XXX KDM use busdma */ 12839#if 0 12840 rq->local = vtophys(tmp_ptr); 12841#endif 12842 } else 12843 rq->local = tmp_ptr; 12844 12845 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12846 tmp_ptr += remote_used; 12847 rq->remote = tmp_ptr; 12848 12849 rq->callback = NULL; 12850 12851 local_used += cur_len; 12852 if (local_used >= local_sglist[i].len) { 12853 i++; 12854 local_used = 0; 12855 } 12856 12857 remote_used += cur_len; 12858 if (remote_used >= remote_sglist[j].len) { 12859 j++; 12860 remote_used = 0; 12861 } 12862 total_used += cur_len; 12863 12864 if (total_used >= io->scsiio.kern_data_len) 12865 rq->callback = callback; 12866 12867 if ((rq->size & 0x7) != 0) { 12868 printf("%s: warning: size %d is not on 8b boundary\n", 12869 __func__, rq->size); 12870 } 12871 if (((uintptr_t)rq->local & 0x7) != 0) { 12872 printf("%s: warning: local %p not on 8b boundary\n", 12873 __func__, rq->local); 12874 } 12875 if (((uintptr_t)rq->remote & 0x7) != 0) { 12876 printf("%s: warning: remote %p not on 8b boundary\n", 12877 __func__, rq->local); 12878 } 12879#if 0 12880 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12881 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12882 rq->local, rq->remote, rq->size); 12883#endif 12884 12885 isc_ret = ctl_dt_single(rq); 12886 if (isc_ret == CTL_HA_STATUS_WAIT) 12887 continue; 12888 12889 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12890 rq->ret = CTL_HA_STATUS_SUCCESS; 12891 } else { 12892 rq->ret = isc_ret; 12893 } 12894 callback(rq); 12895 goto bailout; 12896 } 12897 12898bailout: 12899 return (retval); 12900 12901} 12902 12903static void 12904ctl_datamove_remote_read(union ctl_io *io) 12905{ 12906 int retval; 12907 int i; 12908 12909 /* 12910 * This will send an error to the other controller in the case of a 12911 * failure. 12912 */ 12913 retval = ctl_datamove_remote_sgl_setup(io); 12914 if (retval != 0) 12915 return; 12916 12917 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12918 ctl_datamove_remote_read_cb); 12919 if ((retval != 0) 12920 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12921 /* 12922 * Make sure we free memory if there was an error.. The 12923 * ctl_datamove_remote_xfer() function will send the 12924 * datamove done message, or call the callback with an 12925 * error if there is a problem. 12926 */ 12927 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12928 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12929 } 12930 12931 return; 12932} 12933 12934/* 12935 * Process a datamove request from the other controller. This is used for 12936 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12937 * first. Once that is complete, the data gets DMAed into the remote 12938 * controller's memory. For reads, we DMA from the remote controller's 12939 * memory into our memory first, and then move it out to the FETD. 12940 */ 12941static void 12942ctl_datamove_remote(union ctl_io *io) 12943{ 12944 struct ctl_softc *softc; 12945 12946 softc = control_softc; 12947 12948 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12949 12950 /* 12951 * Note that we look for an aborted I/O here, but don't do some of 12952 * the other checks that ctl_datamove() normally does. We don't 12953 * need to run the task queue, because this I/O is on the ISC 12954 * queue, which is executed by the work thread after the task queue. 12955 * We don't need to run the datamove delay code, since that should 12956 * have been done if need be on the other controller. 12957 */ 12958 mtx_lock(&softc->ctl_lock); 12959 12960 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12961 12962 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12963 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12964 io->io_hdr.nexus.targ_port, 12965 io->io_hdr.nexus.targ_target.id, 12966 io->io_hdr.nexus.targ_lun); 12967 io->io_hdr.status = CTL_CMD_ABORTED; 12968 io->io_hdr.port_status = 31338; 12969 12970 mtx_unlock(&softc->ctl_lock); 12971 12972 ctl_send_datamove_done(io, /*have_lock*/ 0); 12973 12974 return; 12975 } 12976 12977 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12978 mtx_unlock(&softc->ctl_lock); 12979 ctl_datamove_remote_write(io); 12980 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12981 mtx_unlock(&softc->ctl_lock); 12982 ctl_datamove_remote_read(io); 12983 } else { 12984 union ctl_ha_msg msg; 12985 struct scsi_sense_data *sense; 12986 uint8_t sks[3]; 12987 int retry_count; 12988 12989 memset(&msg, 0, sizeof(msg)); 12990 12991 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12992 msg.hdr.status = CTL_SCSI_ERROR; 12993 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12994 12995 retry_count = 4243; 12996 12997 sense = &msg.scsi.sense_data; 12998 sks[0] = SSD_SCS_VALID; 12999 sks[1] = (retry_count >> 8) & 0xff; 13000 sks[2] = retry_count & 0xff; 13001 13002 /* "Internal target failure" */ 13003 scsi_set_sense_data(sense, 13004 /*sense_format*/ SSD_TYPE_NONE, 13005 /*current_error*/ 1, 13006 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 13007 /*asc*/ 0x44, 13008 /*ascq*/ 0x00, 13009 /*type*/ SSD_ELEM_SKS, 13010 /*size*/ sizeof(sks), 13011 /*data*/ sks, 13012 SSD_ELEM_NONE); 13013 13014 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 13015 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 13016 ctl_failover_io(io, /*have_lock*/ 1); 13017 mtx_unlock(&softc->ctl_lock); 13018 return; 13019 } 13020 13021 mtx_unlock(&softc->ctl_lock); 13022 13023 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 13024 CTL_HA_STATUS_SUCCESS) { 13025 /* XXX KDM what to do if this fails? */ 13026 } 13027 return; 13028 } 13029 13030} 13031 13032static int 13033ctl_process_done(union ctl_io *io, int have_lock) 13034{ 13035 struct ctl_lun *lun; 13036 struct ctl_softc *ctl_softc; 13037 void (*fe_done)(union ctl_io *io); 13038 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 13039 13040 CTL_DEBUG_PRINT(("ctl_process_done\n")); 13041 13042 fe_done = 13043 control_softc->ctl_ports[targ_port]->fe_done; 13044 13045#ifdef CTL_TIME_IO 13046 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 13047 char str[256]; 13048 char path_str[64]; 13049 struct sbuf sb; 13050 13051 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 13052 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 13053 13054 sbuf_cat(&sb, path_str); 13055 switch (io->io_hdr.io_type) { 13056 case CTL_IO_SCSI: 13057 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 13058 sbuf_printf(&sb, "\n"); 13059 sbuf_cat(&sb, path_str); 13060 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 13061 io->scsiio.tag_num, io->scsiio.tag_type); 13062 break; 13063 case CTL_IO_TASK: 13064 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 13065 "Tag Type: %d\n", io->taskio.task_action, 13066 io->taskio.tag_num, io->taskio.tag_type); 13067 break; 13068 default: 13069 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 13070 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 13071 break; 13072 } 13073 sbuf_cat(&sb, path_str); 13074 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 13075 (intmax_t)time_uptime - io->io_hdr.start_time); 13076 sbuf_finish(&sb); 13077 printf("%s", sbuf_data(&sb)); 13078 } 13079#endif /* CTL_TIME_IO */ 13080 13081 switch (io->io_hdr.io_type) { 13082 case CTL_IO_SCSI: 13083 break; 13084 case CTL_IO_TASK: 13085 if (bootverbose || verbose > 0) 13086 ctl_io_error_print(io, NULL); 13087 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 13088 ctl_free_io(io); 13089 else 13090 fe_done(io); 13091 return (CTL_RETVAL_COMPLETE); 13092 break; 13093 default: 13094 printf("ctl_process_done: invalid io type %d\n", 13095 io->io_hdr.io_type); 13096 panic("ctl_process_done: invalid io type %d\n", 13097 io->io_hdr.io_type); 13098 break; /* NOTREACHED */ 13099 } 13100 13101 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13102 if (lun == NULL) { 13103 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 13104 io->io_hdr.nexus.targ_lun)); 13105 fe_done(io); 13106 goto bailout; 13107 } 13108 ctl_softc = lun->ctl_softc; 13109 13110 /* 13111 * Remove this from the OOA queue. 13112 */ 13113 if (have_lock == 0) 13114 mtx_lock(&ctl_softc->ctl_lock); 13115 13116 /* 13117 * Check to see if we have any errors to inject here. We only 13118 * inject errors for commands that don't already have errors set. 13119 */ 13120 if ((STAILQ_FIRST(&lun->error_list) != NULL) 13121 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 13122 ctl_inject_error(lun, io); 13123 13124 /* 13125 * XXX KDM how do we treat commands that aren't completed 13126 * successfully? 13127 * 13128 * XXX KDM should we also track I/O latency? 13129 */ 13130 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 13131 uint32_t blocksize; 13132#ifdef CTL_TIME_IO 13133 struct bintime cur_bt; 13134#endif 13135 13136 if ((lun->be_lun != NULL) 13137 && (lun->be_lun->blocksize != 0)) 13138 blocksize = lun->be_lun->blocksize; 13139 else 13140 blocksize = 512; 13141 13142 switch (io->io_hdr.io_type) { 13143 case CTL_IO_SCSI: { 13144 int isread; 13145 struct ctl_lba_len_flags *lbalen; 13146 13147 isread = 0; 13148 switch (io->scsiio.cdb[0]) { 13149 case READ_6: 13150 case READ_10: 13151 case READ_12: 13152 case READ_16: 13153 isread = 1; 13154 /* FALLTHROUGH */ 13155 case WRITE_6: 13156 case WRITE_10: 13157 case WRITE_12: 13158 case WRITE_16: 13159 case WRITE_VERIFY_10: 13160 case WRITE_VERIFY_12: 13161 case WRITE_VERIFY_16: 13162 lbalen = (struct ctl_lba_len_flags *) 13163 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 13164 13165 if (isread) { 13166 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 13167 lbalen->len * blocksize; 13168 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 13169 13170#ifdef CTL_TIME_IO 13171 bintime_add( 13172 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 13173 &io->io_hdr.dma_bt); 13174 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 13175 io->io_hdr.num_dmas; 13176 getbintime(&cur_bt); 13177 bintime_sub(&cur_bt, 13178 &io->io_hdr.start_bt); 13179 13180 bintime_add( 13181 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 13182 &cur_bt); 13183 13184#if 0 13185 cs_prof_gettime(&cur_ticks); 13186 lun->stats.time[CTL_STATS_READ] += 13187 cur_ticks - 13188 io->io_hdr.start_ticks; 13189#endif 13190#if 0 13191 lun->stats.time[CTL_STATS_READ] += 13192 jiffies - io->io_hdr.start_time; 13193#endif 13194#endif /* CTL_TIME_IO */ 13195 } else { 13196 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 13197 lbalen->len * blocksize; 13198 lun->stats.ports[targ_port].operations[ 13199 CTL_STATS_WRITE]++; 13200 13201#ifdef CTL_TIME_IO 13202 bintime_add( 13203 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 13204 &io->io_hdr.dma_bt); 13205 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 13206 io->io_hdr.num_dmas; 13207 getbintime(&cur_bt); 13208 bintime_sub(&cur_bt, 13209 &io->io_hdr.start_bt); 13210 13211 bintime_add( 13212 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 13213 &cur_bt); 13214#if 0 13215 cs_prof_gettime(&cur_ticks); 13216 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 13217 cur_ticks - 13218 io->io_hdr.start_ticks; 13219 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 13220 jiffies - io->io_hdr.start_time; 13221#endif 13222#endif /* CTL_TIME_IO */ 13223 } 13224 break; 13225 default: 13226 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 13227 13228#ifdef CTL_TIME_IO 13229 bintime_add( 13230 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 13231 &io->io_hdr.dma_bt); 13232 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 13233 io->io_hdr.num_dmas; 13234 getbintime(&cur_bt); 13235 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 13236 13237 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 13238 &cur_bt); 13239 13240#if 0 13241 cs_prof_gettime(&cur_ticks); 13242 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 13243 cur_ticks - 13244 io->io_hdr.start_ticks; 13245 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 13246 jiffies - io->io_hdr.start_time; 13247#endif 13248#endif /* CTL_TIME_IO */ 13249 break; 13250 } 13251 break; 13252 } 13253 default: 13254 break; 13255 } 13256 } 13257 13258 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 13259 13260 /* 13261 * Run through the blocked queue on this LUN and see if anything 13262 * has become unblocked, now that this transaction is done. 13263 */ 13264 ctl_check_blocked(lun); 13265 13266 /* 13267 * If the LUN has been invalidated, free it if there is nothing 13268 * left on its OOA queue. 13269 */ 13270 if ((lun->flags & CTL_LUN_INVALID) 13271 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 13272 ctl_free_lun(lun); 13273 13274 /* 13275 * If this command has been aborted, make sure we set the status 13276 * properly. The FETD is responsible for freeing the I/O and doing 13277 * whatever it needs to do to clean up its state. 13278 */ 13279 if (io->io_hdr.flags & CTL_FLAG_ABORT) 13280 io->io_hdr.status = CTL_CMD_ABORTED; 13281 13282 /* 13283 * We print out status for every task management command. For SCSI 13284 * commands, we filter out any unit attention errors; they happen 13285 * on every boot, and would clutter up the log. Note: task 13286 * management commands aren't printed here, they are printed above, 13287 * since they should never even make it down here. 13288 */ 13289 switch (io->io_hdr.io_type) { 13290 case CTL_IO_SCSI: { 13291 int error_code, sense_key, asc, ascq; 13292 13293 sense_key = 0; 13294 13295 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 13296 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 13297 /* 13298 * Since this is just for printing, no need to 13299 * show errors here. 13300 */ 13301 scsi_extract_sense_len(&io->scsiio.sense_data, 13302 io->scsiio.sense_len, 13303 &error_code, 13304 &sense_key, 13305 &asc, 13306 &ascq, 13307 /*show_errors*/ 0); 13308 } 13309 13310 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 13311 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 13312 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 13313 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 13314 13315 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 13316 ctl_softc->skipped_prints++; 13317 if (have_lock == 0) 13318 mtx_unlock(&ctl_softc->ctl_lock); 13319 } else { 13320 uint32_t skipped_prints; 13321 13322 skipped_prints = ctl_softc->skipped_prints; 13323 13324 ctl_softc->skipped_prints = 0; 13325 ctl_softc->last_print_jiffies = time_uptime; 13326 13327 if (have_lock == 0) 13328 mtx_unlock(&ctl_softc->ctl_lock); 13329 if (skipped_prints > 0) { 13330#ifdef NEEDTOPORT 13331 csevent_log(CSC_CTL | CSC_SHELF_SW | 13332 CTL_ERROR_REPORT, 13333 csevent_LogType_Trace, 13334 csevent_Severity_Information, 13335 csevent_AlertLevel_Green, 13336 csevent_FRU_Firmware, 13337 csevent_FRU_Unknown, 13338 "High CTL error volume, %d prints " 13339 "skipped", skipped_prints); 13340#endif 13341 } 13342 if (bootverbose || verbose > 0) 13343 ctl_io_error_print(io, NULL); 13344 } 13345 } else { 13346 if (have_lock == 0) 13347 mtx_unlock(&ctl_softc->ctl_lock); 13348 } 13349 break; 13350 } 13351 case CTL_IO_TASK: 13352 if (have_lock == 0) 13353 mtx_unlock(&ctl_softc->ctl_lock); 13354 if (bootverbose || verbose > 0) 13355 ctl_io_error_print(io, NULL); 13356 break; 13357 default: 13358 if (have_lock == 0) 13359 mtx_unlock(&ctl_softc->ctl_lock); 13360 break; 13361 } 13362 13363 /* 13364 * Tell the FETD or the other shelf controller we're done with this 13365 * command. Note that only SCSI commands get to this point. Task 13366 * management commands are completed above. 13367 * 13368 * We only send status to the other controller if we're in XFER 13369 * mode. In SER_ONLY mode, the I/O is done on the controller that 13370 * received the I/O (from CTL's perspective), and so the status is 13371 * generated there. 13372 * 13373 * XXX KDM if we hold the lock here, we could cause a deadlock 13374 * if the frontend comes back in in this context to queue 13375 * something. 13376 */ 13377 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 13378 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 13379 union ctl_ha_msg msg; 13380 13381 memset(&msg, 0, sizeof(msg)); 13382 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 13383 msg.hdr.original_sc = io->io_hdr.original_sc; 13384 msg.hdr.nexus = io->io_hdr.nexus; 13385 msg.hdr.status = io->io_hdr.status; 13386 msg.scsi.scsi_status = io->scsiio.scsi_status; 13387 msg.scsi.tag_num = io->scsiio.tag_num; 13388 msg.scsi.tag_type = io->scsiio.tag_type; 13389 msg.scsi.sense_len = io->scsiio.sense_len; 13390 msg.scsi.sense_residual = io->scsiio.sense_residual; 13391 msg.scsi.residual = io->scsiio.residual; 13392 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 13393 sizeof(io->scsiio.sense_data)); 13394 /* 13395 * We copy this whether or not this is an I/O-related 13396 * command. Otherwise, we'd have to go and check to see 13397 * whether it's a read/write command, and it really isn't 13398 * worth it. 13399 */ 13400 memcpy(&msg.scsi.lbalen, 13401 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 13402 sizeof(msg.scsi.lbalen)); 13403 13404 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 13405 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 13406 /* XXX do something here */ 13407 } 13408 13409 ctl_free_io(io); 13410 } else 13411 fe_done(io); 13412 13413bailout: 13414 13415 return (CTL_RETVAL_COMPLETE); 13416} 13417 13418/* 13419 * Front end should call this if it doesn't do autosense. When the request 13420 * sense comes back in from the initiator, we'll dequeue this and send it. 13421 */ 13422int 13423ctl_queue_sense(union ctl_io *io) 13424{ 13425 struct ctl_lun *lun; 13426 struct ctl_softc *ctl_softc; 13427 uint32_t initidx, targ_lun; 13428 13429 ctl_softc = control_softc; 13430 13431 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13432 13433 /* 13434 * LUN lookup will likely move to the ctl_work_thread() once we 13435 * have our new queueing infrastructure (that doesn't put things on 13436 * a per-LUN queue initially). That is so that we can handle 13437 * things like an INQUIRY to a LUN that we don't have enabled. We 13438 * can't deal with that right now. 13439 */ 13440 mtx_lock(&ctl_softc->ctl_lock); 13441 13442 /* 13443 * If we don't have a LUN for this, just toss the sense 13444 * information. 13445 */ 13446 targ_lun = io->io_hdr.nexus.targ_lun; 13447 if (io->io_hdr.nexus.lun_map_fn != NULL) 13448 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 13449 if ((targ_lun < CTL_MAX_LUNS) 13450 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13451 lun = ctl_softc->ctl_luns[targ_lun]; 13452 else 13453 goto bailout; 13454 13455 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13456 13457 /* 13458 * Already have CA set for this LUN...toss the sense information. 13459 */ 13460 if (ctl_is_set(lun->have_ca, initidx)) 13461 goto bailout; 13462 13463 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13464 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13465 sizeof(io->scsiio.sense_data))); 13466 ctl_set_mask(lun->have_ca, initidx); 13467 13468bailout: 13469 mtx_unlock(&ctl_softc->ctl_lock); 13470 13471 ctl_free_io(io); 13472 13473 return (CTL_RETVAL_COMPLETE); 13474} 13475 13476/* 13477 * Primary command inlet from frontend ports. All SCSI and task I/O 13478 * requests must go through this function. 13479 */ 13480int 13481ctl_queue(union ctl_io *io) 13482{ 13483 struct ctl_softc *ctl_softc; 13484 13485 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13486 13487 ctl_softc = control_softc; 13488 13489#ifdef CTL_TIME_IO 13490 io->io_hdr.start_time = time_uptime; 13491 getbintime(&io->io_hdr.start_bt); 13492#endif /* CTL_TIME_IO */ 13493 13494 mtx_lock(&ctl_softc->ctl_lock); 13495 13496 switch (io->io_hdr.io_type) { 13497 case CTL_IO_SCSI: 13498 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 13499 links); 13500 break; 13501 case CTL_IO_TASK: 13502 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 13503 /* 13504 * Set the task pending flag. This is necessary to close a 13505 * race condition with the FETD: 13506 * 13507 * - FETD submits a task management command, like an abort. 13508 * - Back end calls fe_datamove() to move the data for the 13509 * aborted command. The FETD can't really accept it, but 13510 * if it did, it would end up transmitting data for a 13511 * command that the initiator told us to abort. 13512 * 13513 * We close the race condition by setting the flag here, 13514 * and checking it in ctl_datamove(), before calling the 13515 * FETD's fe_datamove routine. If we've got a task 13516 * pending, we run the task queue and then check to see 13517 * whether our particular I/O has been aborted. 13518 */ 13519 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 13520 break; 13521 default: 13522 mtx_unlock(&ctl_softc->ctl_lock); 13523 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13524 return (EINVAL); 13525 break; /* NOTREACHED */ 13526 } 13527 mtx_unlock(&ctl_softc->ctl_lock); 13528 13529 ctl_wakeup_thread(); 13530 13531 return (CTL_RETVAL_COMPLETE); 13532} 13533 13534#ifdef CTL_IO_DELAY 13535static void 13536ctl_done_timer_wakeup(void *arg) 13537{ 13538 union ctl_io *io; 13539 13540 io = (union ctl_io *)arg; 13541 ctl_done_lock(io, /*have_lock*/ 0); 13542} 13543#endif /* CTL_IO_DELAY */ 13544 13545void 13546ctl_done_lock(union ctl_io *io, int have_lock) 13547{ 13548 struct ctl_softc *ctl_softc; 13549#ifndef CTL_DONE_THREAD 13550 union ctl_io *xio; 13551#endif /* !CTL_DONE_THREAD */ 13552 13553 ctl_softc = control_softc; 13554 13555 if (have_lock == 0) 13556 mtx_lock(&ctl_softc->ctl_lock); 13557 13558 /* 13559 * Enable this to catch duplicate completion issues. 13560 */ 13561#if 0 13562 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13563 printf("%s: type %d msg %d cdb %x iptl: " 13564 "%d:%d:%d:%d tag 0x%04x " 13565 "flag %#x status %x\n", 13566 __func__, 13567 io->io_hdr.io_type, 13568 io->io_hdr.msg_type, 13569 io->scsiio.cdb[0], 13570 io->io_hdr.nexus.initid.id, 13571 io->io_hdr.nexus.targ_port, 13572 io->io_hdr.nexus.targ_target.id, 13573 io->io_hdr.nexus.targ_lun, 13574 (io->io_hdr.io_type == 13575 CTL_IO_TASK) ? 13576 io->taskio.tag_num : 13577 io->scsiio.tag_num, 13578 io->io_hdr.flags, 13579 io->io_hdr.status); 13580 } else 13581 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13582#endif 13583 13584 /* 13585 * This is an internal copy of an I/O, and should not go through 13586 * the normal done processing logic. 13587 */ 13588 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 13589 if (have_lock == 0) 13590 mtx_unlock(&ctl_softc->ctl_lock); 13591 return; 13592 } 13593 13594 /* 13595 * We need to send a msg to the serializing shelf to finish the IO 13596 * as well. We don't send a finish message to the other shelf if 13597 * this is a task management command. Task management commands 13598 * aren't serialized in the OOA queue, but rather just executed on 13599 * both shelf controllers for commands that originated on that 13600 * controller. 13601 */ 13602 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13603 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13604 union ctl_ha_msg msg_io; 13605 13606 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13607 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13608 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13609 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13610 } 13611 /* continue on to finish IO */ 13612 } 13613#ifdef CTL_IO_DELAY 13614 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13615 struct ctl_lun *lun; 13616 13617 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13618 13619 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13620 } else { 13621 struct ctl_lun *lun; 13622 13623 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13624 13625 if ((lun != NULL) 13626 && (lun->delay_info.done_delay > 0)) { 13627 struct callout *callout; 13628 13629 callout = (struct callout *)&io->io_hdr.timer_bytes; 13630 callout_init(callout, /*mpsafe*/ 1); 13631 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13632 callout_reset(callout, 13633 lun->delay_info.done_delay * hz, 13634 ctl_done_timer_wakeup, io); 13635 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13636 lun->delay_info.done_delay = 0; 13637 if (have_lock == 0) 13638 mtx_unlock(&ctl_softc->ctl_lock); 13639 return; 13640 } 13641 } 13642#endif /* CTL_IO_DELAY */ 13643 13644 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 13645 13646#ifdef CTL_DONE_THREAD 13647 if (have_lock == 0) 13648 mtx_unlock(&ctl_softc->ctl_lock); 13649 13650 ctl_wakeup_thread(); 13651#else /* CTL_DONE_THREAD */ 13652 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 13653 xio != NULL; 13654 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 13655 13656 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 13657 13658 ctl_process_done(xio, /*have_lock*/ 1); 13659 } 13660 if (have_lock == 0) 13661 mtx_unlock(&ctl_softc->ctl_lock); 13662#endif /* CTL_DONE_THREAD */ 13663} 13664 13665void 13666ctl_done(union ctl_io *io) 13667{ 13668 ctl_done_lock(io, /*have_lock*/ 0); 13669} 13670 13671int 13672ctl_isc(struct ctl_scsiio *ctsio) 13673{ 13674 struct ctl_lun *lun; 13675 int retval; 13676 13677 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13678 13679 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13680 13681 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13682 13683 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13684 13685 return (retval); 13686} 13687 13688 13689static void 13690ctl_work_thread(void *arg) 13691{ 13692 struct ctl_softc *softc; 13693 union ctl_io *io; 13694 struct ctl_be_lun *be_lun; 13695 int retval; 13696 13697 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13698 13699 softc = (struct ctl_softc *)arg; 13700 if (softc == NULL) 13701 return; 13702 13703 mtx_lock(&softc->ctl_lock); 13704 for (;;) { 13705 retval = 0; 13706 13707 /* 13708 * We handle the queues in this order: 13709 * - task management 13710 * - ISC 13711 * - done queue (to free up resources, unblock other commands) 13712 * - RtR queue 13713 * - incoming queue 13714 * 13715 * If those queues are empty, we break out of the loop and 13716 * go to sleep. 13717 */ 13718 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 13719 if (io != NULL) { 13720 ctl_run_task_queue(softc); 13721 continue; 13722 } 13723 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 13724 if (io != NULL) { 13725 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 13726 ctl_handle_isc(io); 13727 continue; 13728 } 13729 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 13730 if (io != NULL) { 13731 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 13732 /* clear any blocked commands, call fe_done */ 13733 mtx_unlock(&softc->ctl_lock); 13734 /* 13735 * XXX KDM 13736 * Call this without a lock for now. This will 13737 * depend on whether there is any way the FETD can 13738 * sleep or deadlock if called with the CTL lock 13739 * held. 13740 */ 13741 retval = ctl_process_done(io, /*have_lock*/ 0); 13742 mtx_lock(&softc->ctl_lock); 13743 continue; 13744 } 13745 if (!ctl_pause_rtr) { 13746 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 13747 if (io != NULL) { 13748 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 13749 mtx_unlock(&softc->ctl_lock); 13750 retval = ctl_scsiio(&io->scsiio); 13751 if (retval != CTL_RETVAL_COMPLETE) 13752 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13753 mtx_lock(&softc->ctl_lock); 13754 continue; 13755 } 13756 } 13757 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 13758 if (io != NULL) { 13759 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 13760 mtx_unlock(&softc->ctl_lock); 13761 ctl_scsiio_precheck(softc, &io->scsiio); 13762 mtx_lock(&softc->ctl_lock); 13763 continue; 13764 } 13765 /* 13766 * We might want to move this to a separate thread, so that 13767 * configuration requests (in this case LUN creations) 13768 * won't impact the I/O path. 13769 */ 13770 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13771 if (be_lun != NULL) { 13772 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13773 mtx_unlock(&softc->ctl_lock); 13774 ctl_create_lun(be_lun); 13775 mtx_lock(&softc->ctl_lock); 13776 continue; 13777 } 13778 13779 /* XXX KDM use the PDROP flag?? */ 13780 /* Sleep until we have something to do. */ 13781 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "-", 0); 13782 13783 /* Back to the top of the loop to see what woke us up. */ 13784 continue; 13785 } 13786} 13787 13788void 13789ctl_wakeup_thread() 13790{ 13791 struct ctl_softc *softc; 13792 13793 softc = control_softc; 13794 13795 wakeup_one(softc); 13796} 13797 13798/* Initialization and failover */ 13799 13800void 13801ctl_init_isc_msg(void) 13802{ 13803 printf("CTL: Still calling this thing\n"); 13804} 13805 13806/* 13807 * Init component 13808 * Initializes component into configuration defined by bootMode 13809 * (see hasc-sv.c) 13810 * returns hasc_Status: 13811 * OK 13812 * ERROR - fatal error 13813 */ 13814static ctl_ha_comp_status 13815ctl_isc_init(struct ctl_ha_component *c) 13816{ 13817 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13818 13819 c->status = ret; 13820 return ret; 13821} 13822 13823/* Start component 13824 * Starts component in state requested. If component starts successfully, 13825 * it must set its own state to the requestrd state 13826 * When requested state is HASC_STATE_HA, the component may refine it 13827 * by adding _SLAVE or _MASTER flags. 13828 * Currently allowed state transitions are: 13829 * UNKNOWN->HA - initial startup 13830 * UNKNOWN->SINGLE - initial startup when no parter detected 13831 * HA->SINGLE - failover 13832 * returns ctl_ha_comp_status: 13833 * OK - component successfully started in requested state 13834 * FAILED - could not start the requested state, failover may 13835 * be possible 13836 * ERROR - fatal error detected, no future startup possible 13837 */ 13838static ctl_ha_comp_status 13839ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13840{ 13841 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13842 13843 printf("%s: go\n", __func__); 13844 13845 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13846 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13847 ctl_is_single = 0; 13848 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13849 != CTL_HA_STATUS_SUCCESS) { 13850 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13851 ret = CTL_HA_COMP_STATUS_ERROR; 13852 } 13853 } else if (CTL_HA_STATE_IS_HA(c->state) 13854 && CTL_HA_STATE_IS_SINGLE(state)){ 13855 // HA->SINGLE transition 13856 ctl_failover(); 13857 ctl_is_single = 1; 13858 } else { 13859 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13860 c->state, state); 13861 ret = CTL_HA_COMP_STATUS_ERROR; 13862 } 13863 if (CTL_HA_STATE_IS_SINGLE(state)) 13864 ctl_is_single = 1; 13865 13866 c->state = state; 13867 c->status = ret; 13868 return ret; 13869} 13870 13871/* 13872 * Quiesce component 13873 * The component must clear any error conditions (set status to OK) and 13874 * prepare itself to another Start call 13875 * returns ctl_ha_comp_status: 13876 * OK 13877 * ERROR 13878 */ 13879static ctl_ha_comp_status 13880ctl_isc_quiesce(struct ctl_ha_component *c) 13881{ 13882 int ret = CTL_HA_COMP_STATUS_OK; 13883 13884 ctl_pause_rtr = 1; 13885 c->status = ret; 13886 return ret; 13887} 13888 13889struct ctl_ha_component ctl_ha_component_ctlisc = 13890{ 13891 .name = "CTL ISC", 13892 .state = CTL_HA_STATE_UNKNOWN, 13893 .init = ctl_isc_init, 13894 .start = ctl_isc_start, 13895 .quiesce = ctl_isc_quiesce 13896}; 13897 13898/* 13899 * vim: ts=8 13900 */ 13901