ctl.c revision 268144
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 268144 2014-07-02 10:36:04Z mav $"); 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/types.h> 51#include <sys/kthread.h> 52#include <sys/bio.h> 53#include <sys/fcntl.h> 54#include <sys/lock.h> 55#include <sys/module.h> 56#include <sys/mutex.h> 57#include <sys/condvar.h> 58#include <sys/malloc.h> 59#include <sys/conf.h> 60#include <sys/ioccom.h> 61#include <sys/queue.h> 62#include <sys/sbuf.h> 63#include <sys/smp.h> 64#include <sys/endian.h> 65#include <sys/sysctl.h> 66 67#include <cam/cam.h> 68#include <cam/scsi/scsi_all.h> 69#include <cam/scsi/scsi_da.h> 70#include <cam/ctl/ctl_io.h> 71#include <cam/ctl/ctl.h> 72#include <cam/ctl/ctl_frontend.h> 73#include <cam/ctl/ctl_frontend_internal.h> 74#include <cam/ctl/ctl_util.h> 75#include <cam/ctl/ctl_backend.h> 76#include <cam/ctl/ctl_ioctl.h> 77#include <cam/ctl/ctl_ha.h> 78#include <cam/ctl/ctl_private.h> 79#include <cam/ctl/ctl_debug.h> 80#include <cam/ctl/ctl_scsi_all.h> 81#include <cam/ctl/ctl_error.h> 82 83struct ctl_softc *control_softc = NULL; 84 85/* 86 * The default is to run with CTL_DONE_THREAD turned on. Completed 87 * transactions are queued for processing by the CTL work thread. When 88 * CTL_DONE_THREAD is not defined, completed transactions are processed in 89 * the caller's context. 90 */ 91#define CTL_DONE_THREAD 92 93/* 94 * Use the serial number and device ID provided by the backend, rather than 95 * making up our own. 96 */ 97#define CTL_USE_BACKEND_SN 98 99/* 100 * Size and alignment macros needed for Copan-specific HA hardware. These 101 * can go away when the HA code is re-written, and uses busdma for any 102 * hardware. 103 */ 104#define CTL_ALIGN_8B(target, source, type) \ 105 if (((uint32_t)source & 0x7) != 0) \ 106 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 107 else \ 108 target = (type)source; 109 110#define CTL_SIZE_8B(target, size) \ 111 if ((size & 0x7) != 0) \ 112 target = size + (0x8 - (size & 0x7)); \ 113 else \ 114 target = size; 115 116#define CTL_ALIGN_8B_MARGIN 16 117 118/* 119 * Template mode pages. 120 */ 121 122/* 123 * Note that these are default values only. The actual values will be 124 * filled in when the user does a mode sense. 125 */ 126static struct copan_power_subpage power_page_default = { 127 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 128 /*subpage*/ PWR_SUBPAGE_CODE, 129 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 130 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 131 /*page_version*/ PWR_VERSION, 132 /* total_luns */ 26, 133 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 134 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 135 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 136 0, 0, 0, 0, 0, 0} 137}; 138 139static struct copan_power_subpage power_page_changeable = { 140 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 141 /*subpage*/ PWR_SUBPAGE_CODE, 142 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 143 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 144 /*page_version*/ 0, 145 /* total_luns */ 0, 146 /* max_active_luns*/ 0, 147 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 148 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 149 0, 0, 0, 0, 0, 0} 150}; 151 152static struct copan_aps_subpage aps_page_default = { 153 APS_PAGE_CODE | SMPH_SPF, //page_code 154 APS_SUBPAGE_CODE, //subpage 155 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 156 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 157 APS_VERSION, //page_version 158 0, //lock_active 159 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 160 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 161 0, 0, 0, 0, 0} //reserved 162}; 163 164static struct copan_aps_subpage aps_page_changeable = { 165 APS_PAGE_CODE | SMPH_SPF, //page_code 166 APS_SUBPAGE_CODE, //subpage 167 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 168 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 169 0, //page_version 170 0, //lock_active 171 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 172 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 173 0, 0, 0, 0, 0} //reserved 174}; 175 176static struct copan_debugconf_subpage debugconf_page_default = { 177 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 178 DBGCNF_SUBPAGE_CODE, /* subpage */ 179 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 180 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 181 DBGCNF_VERSION, /* page_version */ 182 {CTL_TIME_IO_DEFAULT_SECS>>8, 183 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 184}; 185 186static struct copan_debugconf_subpage debugconf_page_changeable = { 187 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 188 DBGCNF_SUBPAGE_CODE, /* subpage */ 189 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 190 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 191 0, /* page_version */ 192 {0xff,0xff}, /* ctl_time_io_secs */ 193}; 194 195static struct scsi_format_page format_page_default = { 196 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 197 /*page_length*/sizeof(struct scsi_format_page) - 2, 198 /*tracks_per_zone*/ {0, 0}, 199 /*alt_sectors_per_zone*/ {0, 0}, 200 /*alt_tracks_per_zone*/ {0, 0}, 201 /*alt_tracks_per_lun*/ {0, 0}, 202 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 203 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 204 /*bytes_per_sector*/ {0, 0}, 205 /*interleave*/ {0, 0}, 206 /*track_skew*/ {0, 0}, 207 /*cylinder_skew*/ {0, 0}, 208 /*flags*/ SFP_HSEC, 209 /*reserved*/ {0, 0, 0} 210}; 211 212static struct scsi_format_page format_page_changeable = { 213 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 214 /*page_length*/sizeof(struct scsi_format_page) - 2, 215 /*tracks_per_zone*/ {0, 0}, 216 /*alt_sectors_per_zone*/ {0, 0}, 217 /*alt_tracks_per_zone*/ {0, 0}, 218 /*alt_tracks_per_lun*/ {0, 0}, 219 /*sectors_per_track*/ {0, 0}, 220 /*bytes_per_sector*/ {0, 0}, 221 /*interleave*/ {0, 0}, 222 /*track_skew*/ {0, 0}, 223 /*cylinder_skew*/ {0, 0}, 224 /*flags*/ 0, 225 /*reserved*/ {0, 0, 0} 226}; 227 228static struct scsi_rigid_disk_page rigid_disk_page_default = { 229 /*page_code*/SMS_RIGID_DISK_PAGE, 230 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 231 /*cylinders*/ {0, 0, 0}, 232 /*heads*/ CTL_DEFAULT_HEADS, 233 /*start_write_precomp*/ {0, 0, 0}, 234 /*start_reduced_current*/ {0, 0, 0}, 235 /*step_rate*/ {0, 0}, 236 /*landing_zone_cylinder*/ {0, 0, 0}, 237 /*rpl*/ SRDP_RPL_DISABLED, 238 /*rotational_offset*/ 0, 239 /*reserved1*/ 0, 240 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 241 CTL_DEFAULT_ROTATION_RATE & 0xff}, 242 /*reserved2*/ {0, 0} 243}; 244 245static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 246 /*page_code*/SMS_RIGID_DISK_PAGE, 247 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 248 /*cylinders*/ {0, 0, 0}, 249 /*heads*/ 0, 250 /*start_write_precomp*/ {0, 0, 0}, 251 /*start_reduced_current*/ {0, 0, 0}, 252 /*step_rate*/ {0, 0}, 253 /*landing_zone_cylinder*/ {0, 0, 0}, 254 /*rpl*/ 0, 255 /*rotational_offset*/ 0, 256 /*reserved1*/ 0, 257 /*rotation_rate*/ {0, 0}, 258 /*reserved2*/ {0, 0} 259}; 260 261static struct scsi_caching_page caching_page_default = { 262 /*page_code*/SMS_CACHING_PAGE, 263 /*page_length*/sizeof(struct scsi_caching_page) - 2, 264 /*flags1*/ SCP_DISC | SCP_WCE, 265 /*ret_priority*/ 0, 266 /*disable_pf_transfer_len*/ {0xff, 0xff}, 267 /*min_prefetch*/ {0, 0}, 268 /*max_prefetch*/ {0xff, 0xff}, 269 /*max_pf_ceiling*/ {0xff, 0xff}, 270 /*flags2*/ 0, 271 /*cache_segments*/ 0, 272 /*cache_seg_size*/ {0, 0}, 273 /*reserved*/ 0, 274 /*non_cache_seg_size*/ {0, 0, 0} 275}; 276 277static struct scsi_caching_page caching_page_changeable = { 278 /*page_code*/SMS_CACHING_PAGE, 279 /*page_length*/sizeof(struct scsi_caching_page) - 2, 280 /*flags1*/ 0, 281 /*ret_priority*/ 0, 282 /*disable_pf_transfer_len*/ {0, 0}, 283 /*min_prefetch*/ {0, 0}, 284 /*max_prefetch*/ {0, 0}, 285 /*max_pf_ceiling*/ {0, 0}, 286 /*flags2*/ 0, 287 /*cache_segments*/ 0, 288 /*cache_seg_size*/ {0, 0}, 289 /*reserved*/ 0, 290 /*non_cache_seg_size*/ {0, 0, 0} 291}; 292 293static struct scsi_control_page control_page_default = { 294 /*page_code*/SMS_CONTROL_MODE_PAGE, 295 /*page_length*/sizeof(struct scsi_control_page) - 2, 296 /*rlec*/0, 297 /*queue_flags*/0, 298 /*eca_and_aen*/0, 299 /*reserved*/0, 300 /*aen_holdoff_period*/{0, 0} 301}; 302 303static struct scsi_control_page control_page_changeable = { 304 /*page_code*/SMS_CONTROL_MODE_PAGE, 305 /*page_length*/sizeof(struct scsi_control_page) - 2, 306 /*rlec*/SCP_DSENSE, 307 /*queue_flags*/0, 308 /*eca_and_aen*/0, 309 /*reserved*/0, 310 /*aen_holdoff_period*/{0, 0} 311}; 312 313 314/* 315 * XXX KDM move these into the softc. 316 */ 317static int rcv_sync_msg; 318static int persis_offset; 319static uint8_t ctl_pause_rtr; 320static int ctl_is_single = 1; 321static int index_to_aps_page; 322 323SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 324static int worker_threads = 1; 325TUNABLE_INT("kern.cam.ctl.worker_threads", &worker_threads); 326SYSCTL_INT(_kern_cam_ctl, OID_AUTO, worker_threads, CTLFLAG_RDTUN, 327 &worker_threads, 1, "Number of worker threads"); 328static int verbose = 0; 329TUNABLE_INT("kern.cam.ctl.verbose", &verbose); 330SYSCTL_INT(_kern_cam_ctl, OID_AUTO, verbose, CTLFLAG_RWTUN, 331 &verbose, 0, "Show SCSI errors returned to initiator"); 332 333/* 334 * Serial number (0x80), device id (0x83), supported pages (0x00), 335 * Block limits (0xB0) and Logical Block Provisioning (0xB2) 336 */ 337#define SCSI_EVPD_NUM_SUPPORTED_PAGES 5 338 339static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 340 int param); 341static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 342static int ctl_init(void); 343void ctl_shutdown(void); 344static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 345static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 346static void ctl_ioctl_online(void *arg); 347static void ctl_ioctl_offline(void *arg); 348static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 349static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 350static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 351static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 352static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 353static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock); 354static int ctl_ioctl_submit_wait(union ctl_io *io); 355static void ctl_ioctl_datamove(union ctl_io *io); 356static void ctl_ioctl_done(union ctl_io *io); 357static void ctl_ioctl_hard_startstop_callback(void *arg, 358 struct cfi_metatask *metatask); 359static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 360static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 361 struct ctl_ooa *ooa_hdr, 362 struct ctl_ooa_entry *kern_entries); 363static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 364 struct thread *td); 365uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 366uint32_t ctl_port_idx(int port_num); 367#ifdef unused 368static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 369 uint32_t targ_target, uint32_t targ_lun, 370 int can_wait); 371static void ctl_kfree_io(union ctl_io *io); 372#endif /* unused */ 373static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 374 struct ctl_be_lun *be_lun, struct ctl_id target_id); 375static int ctl_free_lun(struct ctl_lun *lun); 376static void ctl_create_lun(struct ctl_be_lun *be_lun); 377/** 378static void ctl_failover_change_pages(struct ctl_softc *softc, 379 struct ctl_scsiio *ctsio, int master); 380**/ 381 382static int ctl_do_mode_select(union ctl_io *io); 383static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 384 uint64_t res_key, uint64_t sa_res_key, 385 uint8_t type, uint32_t residx, 386 struct ctl_scsiio *ctsio, 387 struct scsi_per_res_out *cdb, 388 struct scsi_per_res_out_parms* param); 389static void ctl_pro_preempt_other(struct ctl_lun *lun, 390 union ctl_ha_msg *msg); 391static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 392static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 393static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 394static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 395static int ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, 396 int alloc_len); 397static int ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len); 398static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 399static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 400static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 401static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 402static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 403 union ctl_io *ooa_io); 404static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 405 union ctl_io *starting_io); 406static int ctl_check_blocked(struct ctl_lun *lun); 407static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 408 struct ctl_lun *lun, 409 struct ctl_cmd_entry *entry, 410 struct ctl_scsiio *ctsio); 411//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 412static void ctl_failover(void); 413static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 414 struct ctl_scsiio *ctsio); 415static int ctl_scsiio(struct ctl_scsiio *ctsio); 416 417static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 418static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 419 ctl_ua_type ua_type); 420static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 421 ctl_ua_type ua_type); 422static int ctl_abort_task(union ctl_io *io); 423static void ctl_run_task_queue(struct ctl_softc *ctl_softc); 424#ifdef CTL_IO_DELAY 425static void ctl_datamove_timer_wakeup(void *arg); 426static void ctl_done_timer_wakeup(void *arg); 427#endif /* CTL_IO_DELAY */ 428 429static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 430static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 431static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 432static void ctl_datamove_remote_write(union ctl_io *io); 433static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 434static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 435static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 436static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 437 ctl_ha_dt_cb callback); 438static void ctl_datamove_remote_read(union ctl_io *io); 439static void ctl_datamove_remote(union ctl_io *io); 440static int ctl_process_done(union ctl_io *io, int have_lock); 441static void ctl_work_thread(void *arg); 442 443/* 444 * Load the serialization table. This isn't very pretty, but is probably 445 * the easiest way to do it. 446 */ 447#include "ctl_ser_table.c" 448 449/* 450 * We only need to define open, close and ioctl routines for this driver. 451 */ 452static struct cdevsw ctl_cdevsw = { 453 .d_version = D_VERSION, 454 .d_flags = 0, 455 .d_open = ctl_open, 456 .d_close = ctl_close, 457 .d_ioctl = ctl_ioctl, 458 .d_name = "ctl", 459}; 460 461 462MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 463 464static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 465 466static moduledata_t ctl_moduledata = { 467 "ctl", 468 ctl_module_event_handler, 469 NULL 470}; 471 472DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 473MODULE_VERSION(ctl, 1); 474 475static void 476ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 477 union ctl_ha_msg *msg_info) 478{ 479 struct ctl_scsiio *ctsio; 480 481 if (msg_info->hdr.original_sc == NULL) { 482 printf("%s: original_sc == NULL!\n", __func__); 483 /* XXX KDM now what? */ 484 return; 485 } 486 487 ctsio = &msg_info->hdr.original_sc->scsiio; 488 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 489 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 490 ctsio->io_hdr.status = msg_info->hdr.status; 491 ctsio->scsi_status = msg_info->scsi.scsi_status; 492 ctsio->sense_len = msg_info->scsi.sense_len; 493 ctsio->sense_residual = msg_info->scsi.sense_residual; 494 ctsio->residual = msg_info->scsi.residual; 495 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 496 sizeof(ctsio->sense_data)); 497 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 498 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 499 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 500 ctl_wakeup_thread(); 501} 502 503static void 504ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 505 union ctl_ha_msg *msg_info) 506{ 507 struct ctl_scsiio *ctsio; 508 509 if (msg_info->hdr.serializing_sc == NULL) { 510 printf("%s: serializing_sc == NULL!\n", __func__); 511 /* XXX KDM now what? */ 512 return; 513 } 514 515 ctsio = &msg_info->hdr.serializing_sc->scsiio; 516#if 0 517 /* 518 * Attempt to catch the situation where an I/O has 519 * been freed, and we're using it again. 520 */ 521 if (ctsio->io_hdr.io_type == 0xff) { 522 union ctl_io *tmp_io; 523 tmp_io = (union ctl_io *)ctsio; 524 printf("%s: %p use after free!\n", __func__, 525 ctsio); 526 printf("%s: type %d msg %d cdb %x iptl: " 527 "%d:%d:%d:%d tag 0x%04x " 528 "flag %#x status %x\n", 529 __func__, 530 tmp_io->io_hdr.io_type, 531 tmp_io->io_hdr.msg_type, 532 tmp_io->scsiio.cdb[0], 533 tmp_io->io_hdr.nexus.initid.id, 534 tmp_io->io_hdr.nexus.targ_port, 535 tmp_io->io_hdr.nexus.targ_target.id, 536 tmp_io->io_hdr.nexus.targ_lun, 537 (tmp_io->io_hdr.io_type == 538 CTL_IO_TASK) ? 539 tmp_io->taskio.tag_num : 540 tmp_io->scsiio.tag_num, 541 tmp_io->io_hdr.flags, 542 tmp_io->io_hdr.status); 543 } 544#endif 545 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 546 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 547 ctl_wakeup_thread(); 548} 549 550/* 551 * ISC (Inter Shelf Communication) event handler. Events from the HA 552 * subsystem come in here. 553 */ 554static void 555ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 556{ 557 struct ctl_softc *ctl_softc; 558 union ctl_io *io; 559 struct ctl_prio *presio; 560 ctl_ha_status isc_status; 561 562 ctl_softc = control_softc; 563 io = NULL; 564 565 566#if 0 567 printf("CTL: Isc Msg event %d\n", event); 568#endif 569 if (event == CTL_HA_EVT_MSG_RECV) { 570 union ctl_ha_msg msg_info; 571 572 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 573 sizeof(msg_info), /*wait*/ 0); 574#if 0 575 printf("CTL: msg_type %d\n", msg_info.msg_type); 576#endif 577 if (isc_status != 0) { 578 printf("Error receiving message, status = %d\n", 579 isc_status); 580 return; 581 } 582 mtx_lock(&ctl_softc->ctl_lock); 583 584 switch (msg_info.hdr.msg_type) { 585 case CTL_MSG_SERIALIZE: 586#if 0 587 printf("Serialize\n"); 588#endif 589 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 590 if (io == NULL) { 591 printf("ctl_isc_event_handler: can't allocate " 592 "ctl_io!\n"); 593 /* Bad Juju */ 594 /* Need to set busy and send msg back */ 595 mtx_unlock(&ctl_softc->ctl_lock); 596 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 597 msg_info.hdr.status = CTL_SCSI_ERROR; 598 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 599 msg_info.scsi.sense_len = 0; 600 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 601 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 602 } 603 goto bailout; 604 } 605 ctl_zero_io(io); 606 // populate ctsio from msg_info 607 io->io_hdr.io_type = CTL_IO_SCSI; 608 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 609 io->io_hdr.original_sc = msg_info.hdr.original_sc; 610#if 0 611 printf("pOrig %x\n", (int)msg_info.original_sc); 612#endif 613 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 614 CTL_FLAG_IO_ACTIVE; 615 /* 616 * If we're in serialization-only mode, we don't 617 * want to go through full done processing. Thus 618 * the COPY flag. 619 * 620 * XXX KDM add another flag that is more specific. 621 */ 622 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 623 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 624 io->io_hdr.nexus = msg_info.hdr.nexus; 625#if 0 626 printf("targ %d, port %d, iid %d, lun %d\n", 627 io->io_hdr.nexus.targ_target.id, 628 io->io_hdr.nexus.targ_port, 629 io->io_hdr.nexus.initid.id, 630 io->io_hdr.nexus.targ_lun); 631#endif 632 io->scsiio.tag_num = msg_info.scsi.tag_num; 633 io->scsiio.tag_type = msg_info.scsi.tag_type; 634 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 635 CTL_MAX_CDBLEN); 636 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 637 struct ctl_cmd_entry *entry; 638 uint8_t opcode; 639 640 opcode = io->scsiio.cdb[0]; 641 entry = &ctl_cmd_table[opcode]; 642 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 643 io->io_hdr.flags |= 644 entry->flags & CTL_FLAG_DATA_MASK; 645 } 646 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 647 &io->io_hdr, links); 648 ctl_wakeup_thread(); 649 break; 650 651 /* Performed on the Originating SC, XFER mode only */ 652 case CTL_MSG_DATAMOVE: { 653 struct ctl_sg_entry *sgl; 654 int i, j; 655 656 io = msg_info.hdr.original_sc; 657 if (io == NULL) { 658 printf("%s: original_sc == NULL!\n", __func__); 659 /* XXX KDM do something here */ 660 break; 661 } 662 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 663 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 664 /* 665 * Keep track of this, we need to send it back over 666 * when the datamove is complete. 667 */ 668 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 669 670 if (msg_info.dt.sg_sequence == 0) { 671 /* 672 * XXX KDM we use the preallocated S/G list 673 * here, but we'll need to change this to 674 * dynamic allocation if we need larger S/G 675 * lists. 676 */ 677 if (msg_info.dt.kern_sg_entries > 678 sizeof(io->io_hdr.remote_sglist) / 679 sizeof(io->io_hdr.remote_sglist[0])) { 680 printf("%s: number of S/G entries " 681 "needed %u > allocated num %zd\n", 682 __func__, 683 msg_info.dt.kern_sg_entries, 684 sizeof(io->io_hdr.remote_sglist)/ 685 sizeof(io->io_hdr.remote_sglist[0])); 686 687 /* 688 * XXX KDM send a message back to 689 * the other side to shut down the 690 * DMA. The error will come back 691 * through via the normal channel. 692 */ 693 break; 694 } 695 sgl = io->io_hdr.remote_sglist; 696 memset(sgl, 0, 697 sizeof(io->io_hdr.remote_sglist)); 698 699 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 700 701 io->scsiio.kern_sg_entries = 702 msg_info.dt.kern_sg_entries; 703 io->scsiio.rem_sg_entries = 704 msg_info.dt.kern_sg_entries; 705 io->scsiio.kern_data_len = 706 msg_info.dt.kern_data_len; 707 io->scsiio.kern_total_len = 708 msg_info.dt.kern_total_len; 709 io->scsiio.kern_data_resid = 710 msg_info.dt.kern_data_resid; 711 io->scsiio.kern_rel_offset = 712 msg_info.dt.kern_rel_offset; 713 /* 714 * Clear out per-DMA flags. 715 */ 716 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 717 /* 718 * Add per-DMA flags that are set for this 719 * particular DMA request. 720 */ 721 io->io_hdr.flags |= msg_info.dt.flags & 722 CTL_FLAG_RDMA_MASK; 723 } else 724 sgl = (struct ctl_sg_entry *) 725 io->scsiio.kern_data_ptr; 726 727 for (i = msg_info.dt.sent_sg_entries, j = 0; 728 i < (msg_info.dt.sent_sg_entries + 729 msg_info.dt.cur_sg_entries); i++, j++) { 730 sgl[i].addr = msg_info.dt.sg_list[j].addr; 731 sgl[i].len = msg_info.dt.sg_list[j].len; 732 733#if 0 734 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 735 __func__, 736 msg_info.dt.sg_list[j].addr, 737 msg_info.dt.sg_list[j].len, 738 sgl[i].addr, sgl[i].len, j, i); 739#endif 740 } 741#if 0 742 memcpy(&sgl[msg_info.dt.sent_sg_entries], 743 msg_info.dt.sg_list, 744 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 745#endif 746 747 /* 748 * If this is the last piece of the I/O, we've got 749 * the full S/G list. Queue processing in the thread. 750 * Otherwise wait for the next piece. 751 */ 752 if (msg_info.dt.sg_last != 0) { 753 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 754 &io->io_hdr, links); 755 ctl_wakeup_thread(); 756 } 757 break; 758 } 759 /* Performed on the Serializing (primary) SC, XFER mode only */ 760 case CTL_MSG_DATAMOVE_DONE: { 761 if (msg_info.hdr.serializing_sc == NULL) { 762 printf("%s: serializing_sc == NULL!\n", 763 __func__); 764 /* XXX KDM now what? */ 765 break; 766 } 767 /* 768 * We grab the sense information here in case 769 * there was a failure, so we can return status 770 * back to the initiator. 771 */ 772 io = msg_info.hdr.serializing_sc; 773 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 774 io->io_hdr.status = msg_info.hdr.status; 775 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 776 io->scsiio.sense_len = msg_info.scsi.sense_len; 777 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 778 io->io_hdr.port_status = msg_info.scsi.fetd_status; 779 io->scsiio.residual = msg_info.scsi.residual; 780 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 781 sizeof(io->scsiio.sense_data)); 782 783 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 784 &io->io_hdr, links); 785 ctl_wakeup_thread(); 786 break; 787 } 788 789 /* Preformed on Originating SC, SER_ONLY mode */ 790 case CTL_MSG_R2R: 791 io = msg_info.hdr.original_sc; 792 if (io == NULL) { 793 printf("%s: Major Bummer\n", __func__); 794 mtx_unlock(&ctl_softc->ctl_lock); 795 return; 796 } else { 797#if 0 798 printf("pOrig %x\n",(int) ctsio); 799#endif 800 } 801 io->io_hdr.msg_type = CTL_MSG_R2R; 802 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 803 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 804 &io->io_hdr, links); 805 ctl_wakeup_thread(); 806 break; 807 808 /* 809 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 810 * mode. 811 * Performed on the Originating (i.e. secondary) SC in XFER 812 * mode 813 */ 814 case CTL_MSG_FINISH_IO: 815 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 816 ctl_isc_handler_finish_xfer(ctl_softc, 817 &msg_info); 818 else 819 ctl_isc_handler_finish_ser_only(ctl_softc, 820 &msg_info); 821 break; 822 823 /* Preformed on Originating SC */ 824 case CTL_MSG_BAD_JUJU: 825 io = msg_info.hdr.original_sc; 826 if (io == NULL) { 827 printf("%s: Bad JUJU!, original_sc is NULL!\n", 828 __func__); 829 break; 830 } 831 ctl_copy_sense_data(&msg_info, io); 832 /* 833 * IO should have already been cleaned up on other 834 * SC so clear this flag so we won't send a message 835 * back to finish the IO there. 836 */ 837 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 838 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 839 840 /* io = msg_info.hdr.serializing_sc; */ 841 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 842 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 843 &io->io_hdr, links); 844 ctl_wakeup_thread(); 845 break; 846 847 /* Handle resets sent from the other side */ 848 case CTL_MSG_MANAGE_TASKS: { 849 struct ctl_taskio *taskio; 850 taskio = (struct ctl_taskio *)ctl_alloc_io( 851 (void *)ctl_softc->othersc_pool); 852 if (taskio == NULL) { 853 printf("ctl_isc_event_handler: can't allocate " 854 "ctl_io!\n"); 855 /* Bad Juju */ 856 /* should I just call the proper reset func 857 here??? */ 858 mtx_unlock(&ctl_softc->ctl_lock); 859 goto bailout; 860 } 861 ctl_zero_io((union ctl_io *)taskio); 862 taskio->io_hdr.io_type = CTL_IO_TASK; 863 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 864 taskio->io_hdr.nexus = msg_info.hdr.nexus; 865 taskio->task_action = msg_info.task.task_action; 866 taskio->tag_num = msg_info.task.tag_num; 867 taskio->tag_type = msg_info.task.tag_type; 868#ifdef CTL_TIME_IO 869 taskio->io_hdr.start_time = time_uptime; 870 getbintime(&taskio->io_hdr.start_bt); 871#if 0 872 cs_prof_gettime(&taskio->io_hdr.start_ticks); 873#endif 874#endif /* CTL_TIME_IO */ 875 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, 876 &taskio->io_hdr, links); 877 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 878 ctl_wakeup_thread(); 879 break; 880 } 881 /* Persistent Reserve action which needs attention */ 882 case CTL_MSG_PERS_ACTION: 883 presio = (struct ctl_prio *)ctl_alloc_io( 884 (void *)ctl_softc->othersc_pool); 885 if (presio == NULL) { 886 printf("ctl_isc_event_handler: can't allocate " 887 "ctl_io!\n"); 888 /* Bad Juju */ 889 /* Need to set busy and send msg back */ 890 mtx_unlock(&ctl_softc->ctl_lock); 891 goto bailout; 892 } 893 ctl_zero_io((union ctl_io *)presio); 894 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 895 presio->pr_msg = msg_info.pr; 896 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 897 &presio->io_hdr, links); 898 ctl_wakeup_thread(); 899 break; 900 case CTL_MSG_SYNC_FE: 901 rcv_sync_msg = 1; 902 break; 903 case CTL_MSG_APS_LOCK: { 904 // It's quicker to execute this then to 905 // queue it. 906 struct ctl_lun *lun; 907 struct ctl_page_index *page_index; 908 struct copan_aps_subpage *current_sp; 909 uint32_t targ_lun; 910 911 targ_lun = msg_info.hdr.nexus.targ_lun; 912 if (msg_info.hdr.nexus.lun_map_fn != NULL) 913 targ_lun = msg_info.hdr.nexus.lun_map_fn(msg_info.hdr.nexus.lun_map_arg, targ_lun); 914 915 lun = ctl_softc->ctl_luns[targ_lun]; 916 page_index = &lun->mode_pages.index[index_to_aps_page]; 917 current_sp = (struct copan_aps_subpage *) 918 (page_index->page_data + 919 (page_index->page_len * CTL_PAGE_CURRENT)); 920 921 current_sp->lock_active = msg_info.aps.lock_flag; 922 break; 923 } 924 default: 925 printf("How did I get here?\n"); 926 } 927 mtx_unlock(&ctl_softc->ctl_lock); 928 } else if (event == CTL_HA_EVT_MSG_SENT) { 929 if (param != CTL_HA_STATUS_SUCCESS) { 930 printf("Bad status from ctl_ha_msg_send status %d\n", 931 param); 932 } 933 return; 934 } else if (event == CTL_HA_EVT_DISCONNECT) { 935 printf("CTL: Got a disconnect from Isc\n"); 936 return; 937 } else { 938 printf("ctl_isc_event_handler: Unknown event %d\n", event); 939 return; 940 } 941 942bailout: 943 return; 944} 945 946static void 947ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 948{ 949 struct scsi_sense_data *sense; 950 951 sense = &dest->scsiio.sense_data; 952 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 953 dest->scsiio.scsi_status = src->scsi.scsi_status; 954 dest->scsiio.sense_len = src->scsi.sense_len; 955 dest->io_hdr.status = src->hdr.status; 956} 957 958static int 959ctl_init(void) 960{ 961 struct ctl_softc *softc; 962 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 963 struct ctl_frontend *fe; 964 uint8_t sc_id =0; 965 int i, error, retval; 966 //int isc_retval; 967 968 retval = 0; 969 ctl_pause_rtr = 0; 970 rcv_sync_msg = 0; 971 972 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 973 M_WAITOK | M_ZERO); 974 softc = control_softc; 975 976 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 977 "cam/ctl"); 978 979 softc->dev->si_drv1 = softc; 980 981 /* 982 * By default, return a "bad LUN" peripheral qualifier for unknown 983 * LUNs. The user can override this default using the tunable or 984 * sysctl. See the comment in ctl_inquiry_std() for more details. 985 */ 986 softc->inquiry_pq_no_lun = 1; 987 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 988 &softc->inquiry_pq_no_lun); 989 sysctl_ctx_init(&softc->sysctl_ctx); 990 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 991 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 992 CTLFLAG_RD, 0, "CAM Target Layer"); 993 994 if (softc->sysctl_tree == NULL) { 995 printf("%s: unable to allocate sysctl tree\n", __func__); 996 destroy_dev(softc->dev); 997 free(control_softc, M_DEVBUF); 998 control_softc = NULL; 999 return (ENOMEM); 1000 } 1001 1002 SYSCTL_ADD_INT(&softc->sysctl_ctx, 1003 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 1004 "inquiry_pq_no_lun", CTLFLAG_RW, 1005 &softc->inquiry_pq_no_lun, 0, 1006 "Report no lun possible for invalid LUNs"); 1007 1008 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 1009 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 1010 softc->open_count = 0; 1011 1012 /* 1013 * Default to actually sending a SYNCHRONIZE CACHE command down to 1014 * the drive. 1015 */ 1016 softc->flags = CTL_FLAG_REAL_SYNC; 1017 1018 /* 1019 * In Copan's HA scheme, the "master" and "slave" roles are 1020 * figured out through the slot the controller is in. Although it 1021 * is an active/active system, someone has to be in charge. 1022 */ 1023#ifdef NEEDTOPORT 1024 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 1025#endif 1026 1027 if (sc_id == 0) { 1028 softc->flags |= CTL_FLAG_MASTER_SHELF; 1029 persis_offset = 0; 1030 } else 1031 persis_offset = CTL_MAX_INITIATORS; 1032 1033 /* 1034 * XXX KDM need to figure out where we want to get our target ID 1035 * and WWID. Is it different on each port? 1036 */ 1037 softc->target.id = 0; 1038 softc->target.wwid[0] = 0x12345678; 1039 softc->target.wwid[1] = 0x87654321; 1040 STAILQ_INIT(&softc->lun_list); 1041 STAILQ_INIT(&softc->pending_lun_queue); 1042 STAILQ_INIT(&softc->task_queue); 1043 STAILQ_INIT(&softc->incoming_queue); 1044 STAILQ_INIT(&softc->rtr_queue); 1045 STAILQ_INIT(&softc->done_queue); 1046 STAILQ_INIT(&softc->isc_queue); 1047 STAILQ_INIT(&softc->fe_list); 1048 STAILQ_INIT(&softc->be_list); 1049 STAILQ_INIT(&softc->io_pools); 1050 1051 /* 1052 * We don't bother calling these with ctl_lock held here, because, 1053 * in theory, no one else can try to do anything while we're in our 1054 * module init routine. 1055 */ 1056 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1057 &internal_pool)!= 0){ 1058 printf("ctl: can't allocate %d entry internal pool, " 1059 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1060 return (ENOMEM); 1061 } 1062 1063 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1064 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1065 printf("ctl: can't allocate %d entry emergency pool, " 1066 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1067 ctl_pool_free(internal_pool); 1068 return (ENOMEM); 1069 } 1070 1071 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1072 &other_pool) != 0) 1073 { 1074 printf("ctl: can't allocate %d entry other SC pool, " 1075 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1076 ctl_pool_free(internal_pool); 1077 ctl_pool_free(emergency_pool); 1078 return (ENOMEM); 1079 } 1080 1081 softc->internal_pool = internal_pool; 1082 softc->emergency_pool = emergency_pool; 1083 softc->othersc_pool = other_pool; 1084 1085 if (worker_threads > MAXCPU || worker_threads == 0) { 1086 printf("invalid kern.cam.ctl.worker_threads value; " 1087 "setting to 1"); 1088 worker_threads = 1; 1089 } else if (worker_threads < 0) { 1090 if (mp_ncpus > 2) { 1091 /* 1092 * Using more than two worker threads actually hurts 1093 * performance due to lock contention. 1094 */ 1095 worker_threads = 2; 1096 } else { 1097 worker_threads = 1; 1098 } 1099 } 1100 1101 for (i = 0; i < worker_threads; i++) { 1102 error = kproc_kthread_add(ctl_work_thread, softc, 1103 &softc->work_thread, NULL, 0, 0, "ctl", "work%d", i); 1104 if (error != 0) { 1105 printf("error creating CTL work thread!\n"); 1106 ctl_pool_free(internal_pool); 1107 ctl_pool_free(emergency_pool); 1108 ctl_pool_free(other_pool); 1109 return (error); 1110 } 1111 } 1112 if (bootverbose) 1113 printf("ctl: CAM Target Layer loaded\n"); 1114 1115 /* 1116 * Initialize the initiator and portname mappings 1117 */ 1118 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1119 1120 /* 1121 * Initialize the ioctl front end. 1122 */ 1123 fe = &softc->ioctl_info.fe; 1124 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1125 fe->port_type = CTL_PORT_IOCTL; 1126 fe->num_requested_ctl_io = 100; 1127 fe->port_name = softc->ioctl_info.port_name; 1128 fe->port_online = ctl_ioctl_online; 1129 fe->port_offline = ctl_ioctl_offline; 1130 fe->onoff_arg = &softc->ioctl_info; 1131 fe->targ_enable = ctl_ioctl_targ_enable; 1132 fe->targ_disable = ctl_ioctl_targ_disable; 1133 fe->lun_enable = ctl_ioctl_lun_enable; 1134 fe->lun_disable = ctl_ioctl_lun_disable; 1135 fe->targ_lun_arg = &softc->ioctl_info; 1136 fe->fe_datamove = ctl_ioctl_datamove; 1137 fe->fe_done = ctl_ioctl_done; 1138 fe->max_targets = 15; 1139 fe->max_target_id = 15; 1140 1141 if (ctl_frontend_register(&softc->ioctl_info.fe, 1142 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1143 printf("ctl: ioctl front end registration failed, will " 1144 "continue anyway\n"); 1145 } 1146 1147#ifdef CTL_IO_DELAY 1148 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1149 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1150 sizeof(struct callout), CTL_TIMER_BYTES); 1151 return (EINVAL); 1152 } 1153#endif /* CTL_IO_DELAY */ 1154 1155 return (0); 1156} 1157 1158void 1159ctl_shutdown(void) 1160{ 1161 struct ctl_softc *softc; 1162 struct ctl_lun *lun, *next_lun; 1163 struct ctl_io_pool *pool; 1164 1165 softc = (struct ctl_softc *)control_softc; 1166 1167 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1168 printf("ctl: ioctl front end deregistration failed\n"); 1169 1170 mtx_lock(&softc->ctl_lock); 1171 1172 /* 1173 * Free up each LUN. 1174 */ 1175 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1176 next_lun = STAILQ_NEXT(lun, links); 1177 ctl_free_lun(lun); 1178 } 1179 1180 mtx_unlock(&softc->ctl_lock); 1181 1182 /* 1183 * This will rip the rug out from under any FETDs or anyone else 1184 * that has a pool allocated. Since we increment our module 1185 * refcount any time someone outside the main CTL module allocates 1186 * a pool, we shouldn't have any problems here. The user won't be 1187 * able to unload the CTL module until client modules have 1188 * successfully unloaded. 1189 */ 1190 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1191 ctl_pool_free(pool); 1192 1193#if 0 1194 ctl_shutdown_thread(softc->work_thread); 1195#endif 1196 1197 mtx_destroy(&softc->pool_lock); 1198 mtx_destroy(&softc->ctl_lock); 1199 1200 destroy_dev(softc->dev); 1201 1202 sysctl_ctx_free(&softc->sysctl_ctx); 1203 1204 free(control_softc, M_DEVBUF); 1205 control_softc = NULL; 1206 1207 if (bootverbose) 1208 printf("ctl: CAM Target Layer unloaded\n"); 1209} 1210 1211static int 1212ctl_module_event_handler(module_t mod, int what, void *arg) 1213{ 1214 1215 switch (what) { 1216 case MOD_LOAD: 1217 return (ctl_init()); 1218 case MOD_UNLOAD: 1219 return (EBUSY); 1220 default: 1221 return (EOPNOTSUPP); 1222 } 1223} 1224 1225/* 1226 * XXX KDM should we do some access checks here? Bump a reference count to 1227 * prevent a CTL module from being unloaded while someone has it open? 1228 */ 1229static int 1230ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1231{ 1232 return (0); 1233} 1234 1235static int 1236ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1237{ 1238 return (0); 1239} 1240 1241int 1242ctl_port_enable(ctl_port_type port_type) 1243{ 1244 struct ctl_softc *softc; 1245 struct ctl_frontend *fe; 1246 1247 if (ctl_is_single == 0) { 1248 union ctl_ha_msg msg_info; 1249 int isc_retval; 1250 1251#if 0 1252 printf("%s: HA mode, synchronizing frontend enable\n", 1253 __func__); 1254#endif 1255 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1256 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1257 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1258 printf("Sync msg send error retval %d\n", isc_retval); 1259 } 1260 if (!rcv_sync_msg) { 1261 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1262 sizeof(msg_info), 1); 1263 } 1264#if 0 1265 printf("CTL:Frontend Enable\n"); 1266 } else { 1267 printf("%s: single mode, skipping frontend synchronization\n", 1268 __func__); 1269#endif 1270 } 1271 1272 softc = control_softc; 1273 1274 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1275 if (port_type & fe->port_type) 1276 { 1277#if 0 1278 printf("port %d\n", fe->targ_port); 1279#endif 1280 ctl_frontend_online(fe); 1281 } 1282 } 1283 1284 return (0); 1285} 1286 1287int 1288ctl_port_disable(ctl_port_type port_type) 1289{ 1290 struct ctl_softc *softc; 1291 struct ctl_frontend *fe; 1292 1293 softc = control_softc; 1294 1295 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1296 if (port_type & fe->port_type) 1297 ctl_frontend_offline(fe); 1298 } 1299 1300 return (0); 1301} 1302 1303/* 1304 * Returns 0 for success, 1 for failure. 1305 * Currently the only failure mode is if there aren't enough entries 1306 * allocated. So, in case of a failure, look at num_entries_dropped, 1307 * reallocate and try again. 1308 */ 1309int 1310ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1311 int *num_entries_filled, int *num_entries_dropped, 1312 ctl_port_type port_type, int no_virtual) 1313{ 1314 struct ctl_softc *softc; 1315 struct ctl_frontend *fe; 1316 int entries_dropped, entries_filled; 1317 int retval; 1318 int i; 1319 1320 softc = control_softc; 1321 1322 retval = 0; 1323 entries_filled = 0; 1324 entries_dropped = 0; 1325 1326 i = 0; 1327 mtx_lock(&softc->ctl_lock); 1328 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1329 struct ctl_port_entry *entry; 1330 1331 if ((fe->port_type & port_type) == 0) 1332 continue; 1333 1334 if ((no_virtual != 0) 1335 && (fe->virtual_port != 0)) 1336 continue; 1337 1338 if (entries_filled >= num_entries_alloced) { 1339 entries_dropped++; 1340 continue; 1341 } 1342 entry = &entries[i]; 1343 1344 entry->port_type = fe->port_type; 1345 strlcpy(entry->port_name, fe->port_name, 1346 sizeof(entry->port_name)); 1347 entry->physical_port = fe->physical_port; 1348 entry->virtual_port = fe->virtual_port; 1349 entry->wwnn = fe->wwnn; 1350 entry->wwpn = fe->wwpn; 1351 1352 i++; 1353 entries_filled++; 1354 } 1355 1356 mtx_unlock(&softc->ctl_lock); 1357 1358 if (entries_dropped > 0) 1359 retval = 1; 1360 1361 *num_entries_dropped = entries_dropped; 1362 *num_entries_filled = entries_filled; 1363 1364 return (retval); 1365} 1366 1367static void 1368ctl_ioctl_online(void *arg) 1369{ 1370 struct ctl_ioctl_info *ioctl_info; 1371 1372 ioctl_info = (struct ctl_ioctl_info *)arg; 1373 1374 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1375} 1376 1377static void 1378ctl_ioctl_offline(void *arg) 1379{ 1380 struct ctl_ioctl_info *ioctl_info; 1381 1382 ioctl_info = (struct ctl_ioctl_info *)arg; 1383 1384 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1385} 1386 1387/* 1388 * Remove an initiator by port number and initiator ID. 1389 * Returns 0 for success, 1 for failure. 1390 */ 1391int 1392ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1393{ 1394 struct ctl_softc *softc; 1395 1396 softc = control_softc; 1397 1398 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1399 1400 if ((targ_port < 0) 1401 || (targ_port > CTL_MAX_PORTS)) { 1402 printf("%s: invalid port number %d\n", __func__, targ_port); 1403 return (1); 1404 } 1405 if (iid > CTL_MAX_INIT_PER_PORT) { 1406 printf("%s: initiator ID %u > maximun %u!\n", 1407 __func__, iid, CTL_MAX_INIT_PER_PORT); 1408 return (1); 1409 } 1410 1411 mtx_lock(&softc->ctl_lock); 1412 1413 softc->wwpn_iid[targ_port][iid].in_use = 0; 1414 1415 mtx_unlock(&softc->ctl_lock); 1416 1417 return (0); 1418} 1419 1420/* 1421 * Add an initiator to the initiator map. 1422 * Returns 0 for success, 1 for failure. 1423 */ 1424int 1425ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1426{ 1427 struct ctl_softc *softc; 1428 int retval; 1429 1430 softc = control_softc; 1431 1432 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1433 1434 retval = 0; 1435 1436 if ((targ_port < 0) 1437 || (targ_port > CTL_MAX_PORTS)) { 1438 printf("%s: invalid port number %d\n", __func__, targ_port); 1439 return (1); 1440 } 1441 if (iid > CTL_MAX_INIT_PER_PORT) { 1442 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1443 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1444 return (1); 1445 } 1446 1447 mtx_lock(&softc->ctl_lock); 1448 1449 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1450 /* 1451 * We don't treat this as an error. 1452 */ 1453 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1454 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1455 __func__, targ_port, iid, (uintmax_t)wwpn); 1456 goto bailout; 1457 } 1458 1459 /* 1460 * This is an error, but what do we do about it? The 1461 * driver is telling us we have a new WWPN for this 1462 * initiator ID, so we pretty much need to use it. 1463 */ 1464 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1465 "still at that address\n", __func__, targ_port, iid, 1466 (uintmax_t)wwpn, 1467 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1468 1469 /* 1470 * XXX KDM clear have_ca and ua_pending on each LUN for 1471 * this initiator. 1472 */ 1473 } 1474 softc->wwpn_iid[targ_port][iid].in_use = 1; 1475 softc->wwpn_iid[targ_port][iid].iid = iid; 1476 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1477 softc->wwpn_iid[targ_port][iid].port = targ_port; 1478 1479bailout: 1480 1481 mtx_unlock(&softc->ctl_lock); 1482 1483 return (retval); 1484} 1485 1486/* 1487 * XXX KDM should we pretend to do something in the target/lun 1488 * enable/disable functions? 1489 */ 1490static int 1491ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1492{ 1493 return (0); 1494} 1495 1496static int 1497ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1498{ 1499 return (0); 1500} 1501 1502static int 1503ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1504{ 1505 return (0); 1506} 1507 1508static int 1509ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1510{ 1511 return (0); 1512} 1513 1514/* 1515 * Data movement routine for the CTL ioctl frontend port. 1516 */ 1517static int 1518ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1519{ 1520 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1521 struct ctl_sg_entry ext_entry, kern_entry; 1522 int ext_sglen, ext_sg_entries, kern_sg_entries; 1523 int ext_sg_start, ext_offset; 1524 int len_to_copy, len_copied; 1525 int kern_watermark, ext_watermark; 1526 int ext_sglist_malloced; 1527 int i, j; 1528 1529 ext_sglist_malloced = 0; 1530 ext_sg_start = 0; 1531 ext_offset = 0; 1532 1533 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1534 1535 /* 1536 * If this flag is set, fake the data transfer. 1537 */ 1538 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1539 ctsio->ext_data_filled = ctsio->ext_data_len; 1540 goto bailout; 1541 } 1542 1543 /* 1544 * To simplify things here, if we have a single buffer, stick it in 1545 * a S/G entry and just make it a single entry S/G list. 1546 */ 1547 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1548 int len_seen; 1549 1550 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1551 1552 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1553 M_WAITOK); 1554 ext_sglist_malloced = 1; 1555 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1556 ext_sglen) != 0) { 1557 ctl_set_internal_failure(ctsio, 1558 /*sks_valid*/ 0, 1559 /*retry_count*/ 0); 1560 goto bailout; 1561 } 1562 ext_sg_entries = ctsio->ext_sg_entries; 1563 len_seen = 0; 1564 for (i = 0; i < ext_sg_entries; i++) { 1565 if ((len_seen + ext_sglist[i].len) >= 1566 ctsio->ext_data_filled) { 1567 ext_sg_start = i; 1568 ext_offset = ctsio->ext_data_filled - len_seen; 1569 break; 1570 } 1571 len_seen += ext_sglist[i].len; 1572 } 1573 } else { 1574 ext_sglist = &ext_entry; 1575 ext_sglist->addr = ctsio->ext_data_ptr; 1576 ext_sglist->len = ctsio->ext_data_len; 1577 ext_sg_entries = 1; 1578 ext_sg_start = 0; 1579 ext_offset = ctsio->ext_data_filled; 1580 } 1581 1582 if (ctsio->kern_sg_entries > 0) { 1583 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1584 kern_sg_entries = ctsio->kern_sg_entries; 1585 } else { 1586 kern_sglist = &kern_entry; 1587 kern_sglist->addr = ctsio->kern_data_ptr; 1588 kern_sglist->len = ctsio->kern_data_len; 1589 kern_sg_entries = 1; 1590 } 1591 1592 1593 kern_watermark = 0; 1594 ext_watermark = ext_offset; 1595 len_copied = 0; 1596 for (i = ext_sg_start, j = 0; 1597 i < ext_sg_entries && j < kern_sg_entries;) { 1598 uint8_t *ext_ptr, *kern_ptr; 1599 1600 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1601 kern_sglist[j].len - kern_watermark); 1602 1603 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1604 ext_ptr = ext_ptr + ext_watermark; 1605 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1606 /* 1607 * XXX KDM fix this! 1608 */ 1609 panic("need to implement bus address support"); 1610#if 0 1611 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1612#endif 1613 } else 1614 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1615 kern_ptr = kern_ptr + kern_watermark; 1616 1617 kern_watermark += len_to_copy; 1618 ext_watermark += len_to_copy; 1619 1620 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1621 CTL_FLAG_DATA_IN) { 1622 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1623 "bytes to user\n", len_to_copy)); 1624 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1625 "to %p\n", kern_ptr, ext_ptr)); 1626 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1627 ctl_set_internal_failure(ctsio, 1628 /*sks_valid*/ 0, 1629 /*retry_count*/ 0); 1630 goto bailout; 1631 } 1632 } else { 1633 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1634 "bytes from user\n", len_to_copy)); 1635 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1636 "to %p\n", ext_ptr, kern_ptr)); 1637 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1638 ctl_set_internal_failure(ctsio, 1639 /*sks_valid*/ 0, 1640 /*retry_count*/0); 1641 goto bailout; 1642 } 1643 } 1644 1645 len_copied += len_to_copy; 1646 1647 if (ext_sglist[i].len == ext_watermark) { 1648 i++; 1649 ext_watermark = 0; 1650 } 1651 1652 if (kern_sglist[j].len == kern_watermark) { 1653 j++; 1654 kern_watermark = 0; 1655 } 1656 } 1657 1658 ctsio->ext_data_filled += len_copied; 1659 1660 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1661 "kern_sg_entries: %d\n", ext_sg_entries, 1662 kern_sg_entries)); 1663 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1664 "kern_data_len = %d\n", ctsio->ext_data_len, 1665 ctsio->kern_data_len)); 1666 1667 1668 /* XXX KDM set residual?? */ 1669bailout: 1670 1671 if (ext_sglist_malloced != 0) 1672 free(ext_sglist, M_CTL); 1673 1674 return (CTL_RETVAL_COMPLETE); 1675} 1676 1677/* 1678 * Serialize a command that went down the "wrong" side, and so was sent to 1679 * this controller for execution. The logic is a little different than the 1680 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1681 * sent back to the other side, but in the success case, we execute the 1682 * command on this side (XFER mode) or tell the other side to execute it 1683 * (SER_ONLY mode). 1684 */ 1685static int 1686ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock) 1687{ 1688 struct ctl_softc *ctl_softc; 1689 union ctl_ha_msg msg_info; 1690 struct ctl_lun *lun; 1691 int retval = 0; 1692 uint32_t targ_lun; 1693 1694 ctl_softc = control_softc; 1695 if (have_lock == 0) 1696 mtx_lock(&ctl_softc->ctl_lock); 1697 1698 targ_lun = ctsio->io_hdr.nexus.targ_lun; 1699 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 1700 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 1701 lun = ctl_softc->ctl_luns[targ_lun]; 1702 if (lun==NULL) 1703 { 1704 /* 1705 * Why isn't LUN defined? The other side wouldn't 1706 * send a cmd if the LUN is undefined. 1707 */ 1708 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1709 1710 /* "Logical unit not supported" */ 1711 ctl_set_sense_data(&msg_info.scsi.sense_data, 1712 lun, 1713 /*sense_format*/SSD_TYPE_NONE, 1714 /*current_error*/ 1, 1715 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1716 /*asc*/ 0x25, 1717 /*ascq*/ 0x00, 1718 SSD_ELEM_NONE); 1719 1720 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1721 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1722 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1723 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1724 msg_info.hdr.serializing_sc = NULL; 1725 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1726 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1727 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1728 } 1729 if (have_lock == 0) 1730 mtx_unlock(&ctl_softc->ctl_lock); 1731 return(1); 1732 1733 } 1734 1735 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1736 1737 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1738 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1739 ooa_links))) { 1740 case CTL_ACTION_BLOCK: 1741 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1742 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1743 blocked_links); 1744 break; 1745 case CTL_ACTION_PASS: 1746 case CTL_ACTION_SKIP: 1747 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1748 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1749 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 1750 &ctsio->io_hdr, links); 1751 } else { 1752 1753 /* send msg back to other side */ 1754 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1755 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1756 msg_info.hdr.msg_type = CTL_MSG_R2R; 1757#if 0 1758 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1759#endif 1760 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1761 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1762 } 1763 } 1764 break; 1765 case CTL_ACTION_OVERLAP: 1766 /* OVERLAPPED COMMANDS ATTEMPTED */ 1767 ctl_set_sense_data(&msg_info.scsi.sense_data, 1768 lun, 1769 /*sense_format*/SSD_TYPE_NONE, 1770 /*current_error*/ 1, 1771 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1772 /*asc*/ 0x4E, 1773 /*ascq*/ 0x00, 1774 SSD_ELEM_NONE); 1775 1776 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1777 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1778 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1779 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1780 msg_info.hdr.serializing_sc = NULL; 1781 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1782#if 0 1783 printf("BAD JUJU:Major Bummer Overlap\n"); 1784#endif 1785 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1786 retval = 1; 1787 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1788 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1789 } 1790 break; 1791 case CTL_ACTION_OVERLAP_TAG: 1792 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1793 ctl_set_sense_data(&msg_info.scsi.sense_data, 1794 lun, 1795 /*sense_format*/SSD_TYPE_NONE, 1796 /*current_error*/ 1, 1797 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1798 /*asc*/ 0x4D, 1799 /*ascq*/ ctsio->tag_num & 0xff, 1800 SSD_ELEM_NONE); 1801 1802 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1803 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1804 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1805 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1806 msg_info.hdr.serializing_sc = NULL; 1807 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1808#if 0 1809 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1810#endif 1811 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1812 retval = 1; 1813 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1814 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1815 } 1816 break; 1817 case CTL_ACTION_ERROR: 1818 default: 1819 /* "Internal target failure" */ 1820 ctl_set_sense_data(&msg_info.scsi.sense_data, 1821 lun, 1822 /*sense_format*/SSD_TYPE_NONE, 1823 /*current_error*/ 1, 1824 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1825 /*asc*/ 0x44, 1826 /*ascq*/ 0x00, 1827 SSD_ELEM_NONE); 1828 1829 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1830 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1831 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1832 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1833 msg_info.hdr.serializing_sc = NULL; 1834 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1835#if 0 1836 printf("BAD JUJU:Major Bummer HW Error\n"); 1837#endif 1838 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1839 retval = 1; 1840 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1841 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1842 } 1843 break; 1844 } 1845 if (have_lock == 0) 1846 mtx_unlock(&ctl_softc->ctl_lock); 1847 return (retval); 1848} 1849 1850static int 1851ctl_ioctl_submit_wait(union ctl_io *io) 1852{ 1853 struct ctl_fe_ioctl_params params; 1854 ctl_fe_ioctl_state last_state; 1855 int done, retval; 1856 1857 retval = 0; 1858 1859 bzero(¶ms, sizeof(params)); 1860 1861 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1862 cv_init(¶ms.sem, "ctlioccv"); 1863 params.state = CTL_IOCTL_INPROG; 1864 last_state = params.state; 1865 1866 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1867 1868 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1869 1870 /* This shouldn't happen */ 1871 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1872 return (retval); 1873 1874 done = 0; 1875 1876 do { 1877 mtx_lock(¶ms.ioctl_mtx); 1878 /* 1879 * Check the state here, and don't sleep if the state has 1880 * already changed (i.e. wakeup has already occured, but we 1881 * weren't waiting yet). 1882 */ 1883 if (params.state == last_state) { 1884 /* XXX KDM cv_wait_sig instead? */ 1885 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1886 } 1887 last_state = params.state; 1888 1889 switch (params.state) { 1890 case CTL_IOCTL_INPROG: 1891 /* Why did we wake up? */ 1892 /* XXX KDM error here? */ 1893 mtx_unlock(¶ms.ioctl_mtx); 1894 break; 1895 case CTL_IOCTL_DATAMOVE: 1896 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1897 1898 /* 1899 * change last_state back to INPROG to avoid 1900 * deadlock on subsequent data moves. 1901 */ 1902 params.state = last_state = CTL_IOCTL_INPROG; 1903 1904 mtx_unlock(¶ms.ioctl_mtx); 1905 ctl_ioctl_do_datamove(&io->scsiio); 1906 /* 1907 * Note that in some cases, most notably writes, 1908 * this will queue the I/O and call us back later. 1909 * In other cases, generally reads, this routine 1910 * will immediately call back and wake us up, 1911 * probably using our own context. 1912 */ 1913 io->scsiio.be_move_done(io); 1914 break; 1915 case CTL_IOCTL_DONE: 1916 mtx_unlock(¶ms.ioctl_mtx); 1917 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1918 done = 1; 1919 break; 1920 default: 1921 mtx_unlock(¶ms.ioctl_mtx); 1922 /* XXX KDM error here? */ 1923 break; 1924 } 1925 } while (done == 0); 1926 1927 mtx_destroy(¶ms.ioctl_mtx); 1928 cv_destroy(¶ms.sem); 1929 1930 return (CTL_RETVAL_COMPLETE); 1931} 1932 1933static void 1934ctl_ioctl_datamove(union ctl_io *io) 1935{ 1936 struct ctl_fe_ioctl_params *params; 1937 1938 params = (struct ctl_fe_ioctl_params *) 1939 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1940 1941 mtx_lock(¶ms->ioctl_mtx); 1942 params->state = CTL_IOCTL_DATAMOVE; 1943 cv_broadcast(¶ms->sem); 1944 mtx_unlock(¶ms->ioctl_mtx); 1945} 1946 1947static void 1948ctl_ioctl_done(union ctl_io *io) 1949{ 1950 struct ctl_fe_ioctl_params *params; 1951 1952 params = (struct ctl_fe_ioctl_params *) 1953 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1954 1955 mtx_lock(¶ms->ioctl_mtx); 1956 params->state = CTL_IOCTL_DONE; 1957 cv_broadcast(¶ms->sem); 1958 mtx_unlock(¶ms->ioctl_mtx); 1959} 1960 1961static void 1962ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1963{ 1964 struct ctl_fe_ioctl_startstop_info *sd_info; 1965 1966 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1967 1968 sd_info->hs_info.status = metatask->status; 1969 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1970 sd_info->hs_info.luns_complete = 1971 metatask->taskinfo.startstop.luns_complete; 1972 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1973 1974 cv_broadcast(&sd_info->sem); 1975} 1976 1977static void 1978ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1979{ 1980 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1981 1982 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1983 1984 mtx_lock(fe_bbr_info->lock); 1985 fe_bbr_info->bbr_info->status = metatask->status; 1986 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1987 fe_bbr_info->wakeup_done = 1; 1988 mtx_unlock(fe_bbr_info->lock); 1989 1990 cv_broadcast(&fe_bbr_info->sem); 1991} 1992 1993/* 1994 * Returns 0 for success, errno for failure. 1995 */ 1996static int 1997ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1998 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1999{ 2000 union ctl_io *io; 2001 int retval; 2002 2003 retval = 0; 2004 2005 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 2006 2007 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 2008 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2009 ooa_links)) { 2010 struct ctl_ooa_entry *entry; 2011 2012 /* 2013 * If we've got more than we can fit, just count the 2014 * remaining entries. 2015 */ 2016 if (*cur_fill_num >= ooa_hdr->alloc_num) 2017 continue; 2018 2019 entry = &kern_entries[*cur_fill_num]; 2020 2021 entry->tag_num = io->scsiio.tag_num; 2022 entry->lun_num = lun->lun; 2023#ifdef CTL_TIME_IO 2024 entry->start_bt = io->io_hdr.start_bt; 2025#endif 2026 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 2027 entry->cdb_len = io->scsiio.cdb_len; 2028 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 2029 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 2030 2031 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 2032 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 2033 2034 if (io->io_hdr.flags & CTL_FLAG_ABORT) 2035 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 2036 2037 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 2038 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 2039 2040 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 2041 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 2042 } 2043 2044 return (retval); 2045} 2046 2047static void * 2048ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2049 size_t error_str_len) 2050{ 2051 void *kptr; 2052 2053 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2054 2055 if (copyin(user_addr, kptr, len) != 0) { 2056 snprintf(error_str, error_str_len, "Error copying %d bytes " 2057 "from user address %p to kernel address %p", len, 2058 user_addr, kptr); 2059 free(kptr, M_CTL); 2060 return (NULL); 2061 } 2062 2063 return (kptr); 2064} 2065 2066static void 2067ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2068{ 2069 int i; 2070 2071 if (be_args == NULL) 2072 return; 2073 2074 for (i = 0; i < num_be_args; i++) { 2075 free(be_args[i].kname, M_CTL); 2076 free(be_args[i].kvalue, M_CTL); 2077 } 2078 2079 free(be_args, M_CTL); 2080} 2081 2082static struct ctl_be_arg * 2083ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2084 char *error_str, size_t error_str_len) 2085{ 2086 struct ctl_be_arg *args; 2087 int i; 2088 2089 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2090 error_str, error_str_len); 2091 2092 if (args == NULL) 2093 goto bailout; 2094 2095 for (i = 0; i < num_be_args; i++) { 2096 args[i].kname = NULL; 2097 args[i].kvalue = NULL; 2098 } 2099 2100 for (i = 0; i < num_be_args; i++) { 2101 uint8_t *tmpptr; 2102 2103 args[i].kname = ctl_copyin_alloc(args[i].name, 2104 args[i].namelen, error_str, error_str_len); 2105 if (args[i].kname == NULL) 2106 goto bailout; 2107 2108 if (args[i].kname[args[i].namelen - 1] != '\0') { 2109 snprintf(error_str, error_str_len, "Argument %d " 2110 "name is not NUL-terminated", i); 2111 goto bailout; 2112 } 2113 2114 args[i].kvalue = NULL; 2115 2116 tmpptr = ctl_copyin_alloc(args[i].value, 2117 args[i].vallen, error_str, error_str_len); 2118 if (tmpptr == NULL) 2119 goto bailout; 2120 2121 args[i].kvalue = tmpptr; 2122 2123 if ((args[i].flags & CTL_BEARG_ASCII) 2124 && (tmpptr[args[i].vallen - 1] != '\0')) { 2125 snprintf(error_str, error_str_len, "Argument %d " 2126 "value is not NUL-terminated", i); 2127 goto bailout; 2128 } 2129 } 2130 2131 return (args); 2132bailout: 2133 2134 ctl_free_args(num_be_args, args); 2135 2136 return (NULL); 2137} 2138 2139/* 2140 * Escape characters that are illegal or not recommended in XML. 2141 */ 2142int 2143ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2144{ 2145 int retval; 2146 2147 retval = 0; 2148 2149 for (; *str; str++) { 2150 switch (*str) { 2151 case '&': 2152 retval = sbuf_printf(sb, "&"); 2153 break; 2154 case '>': 2155 retval = sbuf_printf(sb, ">"); 2156 break; 2157 case '<': 2158 retval = sbuf_printf(sb, "<"); 2159 break; 2160 default: 2161 retval = sbuf_putc(sb, *str); 2162 break; 2163 } 2164 2165 if (retval != 0) 2166 break; 2167 2168 } 2169 2170 return (retval); 2171} 2172 2173static int 2174ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2175 struct thread *td) 2176{ 2177 struct ctl_softc *softc; 2178 int retval; 2179 2180 softc = control_softc; 2181 2182 retval = 0; 2183 2184 switch (cmd) { 2185 case CTL_IO: { 2186 union ctl_io *io; 2187 void *pool_tmp; 2188 2189 /* 2190 * If we haven't been "enabled", don't allow any SCSI I/O 2191 * to this FETD. 2192 */ 2193 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2194 retval = -EPERM; 2195 break; 2196 } 2197 2198 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2199 if (io == NULL) { 2200 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2201 retval = -ENOSPC; 2202 break; 2203 } 2204 2205 /* 2206 * Need to save the pool reference so it doesn't get 2207 * spammed by the user's ctl_io. 2208 */ 2209 pool_tmp = io->io_hdr.pool; 2210 2211 memcpy(io, (void *)addr, sizeof(*io)); 2212 2213 io->io_hdr.pool = pool_tmp; 2214 /* 2215 * No status yet, so make sure the status is set properly. 2216 */ 2217 io->io_hdr.status = CTL_STATUS_NONE; 2218 2219 /* 2220 * The user sets the initiator ID, target and LUN IDs. 2221 */ 2222 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2223 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2224 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2225 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2226 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2227 2228 retval = ctl_ioctl_submit_wait(io); 2229 2230 if (retval != 0) { 2231 ctl_free_io(io); 2232 break; 2233 } 2234 2235 memcpy((void *)addr, io, sizeof(*io)); 2236 2237 /* return this to our pool */ 2238 ctl_free_io(io); 2239 2240 break; 2241 } 2242 case CTL_ENABLE_PORT: 2243 case CTL_DISABLE_PORT: 2244 case CTL_SET_PORT_WWNS: { 2245 struct ctl_frontend *fe; 2246 struct ctl_port_entry *entry; 2247 2248 entry = (struct ctl_port_entry *)addr; 2249 2250 mtx_lock(&softc->ctl_lock); 2251 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2252 int action, done; 2253 2254 action = 0; 2255 done = 0; 2256 2257 if ((entry->port_type == CTL_PORT_NONE) 2258 && (entry->targ_port == fe->targ_port)) { 2259 /* 2260 * If the user only wants to enable or 2261 * disable or set WWNs on a specific port, 2262 * do the operation and we're done. 2263 */ 2264 action = 1; 2265 done = 1; 2266 } else if (entry->port_type & fe->port_type) { 2267 /* 2268 * Compare the user's type mask with the 2269 * particular frontend type to see if we 2270 * have a match. 2271 */ 2272 action = 1; 2273 done = 0; 2274 2275 /* 2276 * Make sure the user isn't trying to set 2277 * WWNs on multiple ports at the same time. 2278 */ 2279 if (cmd == CTL_SET_PORT_WWNS) { 2280 printf("%s: Can't set WWNs on " 2281 "multiple ports\n", __func__); 2282 retval = EINVAL; 2283 break; 2284 } 2285 } 2286 if (action != 0) { 2287 /* 2288 * XXX KDM we have to drop the lock here, 2289 * because the online/offline operations 2290 * can potentially block. We need to 2291 * reference count the frontends so they 2292 * can't go away, 2293 */ 2294 mtx_unlock(&softc->ctl_lock); 2295 2296 if (cmd == CTL_ENABLE_PORT) { 2297 struct ctl_lun *lun; 2298 2299 STAILQ_FOREACH(lun, &softc->lun_list, 2300 links) { 2301 fe->lun_enable(fe->targ_lun_arg, 2302 lun->target, 2303 lun->lun); 2304 } 2305 2306 ctl_frontend_online(fe); 2307 } else if (cmd == CTL_DISABLE_PORT) { 2308 struct ctl_lun *lun; 2309 2310 ctl_frontend_offline(fe); 2311 2312 STAILQ_FOREACH(lun, &softc->lun_list, 2313 links) { 2314 fe->lun_disable( 2315 fe->targ_lun_arg, 2316 lun->target, 2317 lun->lun); 2318 } 2319 } 2320 2321 mtx_lock(&softc->ctl_lock); 2322 2323 if (cmd == CTL_SET_PORT_WWNS) 2324 ctl_frontend_set_wwns(fe, 2325 (entry->flags & CTL_PORT_WWNN_VALID) ? 2326 1 : 0, entry->wwnn, 2327 (entry->flags & CTL_PORT_WWPN_VALID) ? 2328 1 : 0, entry->wwpn); 2329 } 2330 if (done != 0) 2331 break; 2332 } 2333 mtx_unlock(&softc->ctl_lock); 2334 break; 2335 } 2336 case CTL_GET_PORT_LIST: { 2337 struct ctl_frontend *fe; 2338 struct ctl_port_list *list; 2339 int i; 2340 2341 list = (struct ctl_port_list *)addr; 2342 2343 if (list->alloc_len != (list->alloc_num * 2344 sizeof(struct ctl_port_entry))) { 2345 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2346 "alloc_num %u * sizeof(struct ctl_port_entry) " 2347 "%zu\n", __func__, list->alloc_len, 2348 list->alloc_num, sizeof(struct ctl_port_entry)); 2349 retval = EINVAL; 2350 break; 2351 } 2352 list->fill_len = 0; 2353 list->fill_num = 0; 2354 list->dropped_num = 0; 2355 i = 0; 2356 mtx_lock(&softc->ctl_lock); 2357 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2358 struct ctl_port_entry entry, *list_entry; 2359 2360 if (list->fill_num >= list->alloc_num) { 2361 list->dropped_num++; 2362 continue; 2363 } 2364 2365 entry.port_type = fe->port_type; 2366 strlcpy(entry.port_name, fe->port_name, 2367 sizeof(entry.port_name)); 2368 entry.targ_port = fe->targ_port; 2369 entry.physical_port = fe->physical_port; 2370 entry.virtual_port = fe->virtual_port; 2371 entry.wwnn = fe->wwnn; 2372 entry.wwpn = fe->wwpn; 2373 if (fe->status & CTL_PORT_STATUS_ONLINE) 2374 entry.online = 1; 2375 else 2376 entry.online = 0; 2377 2378 list_entry = &list->entries[i]; 2379 2380 retval = copyout(&entry, list_entry, sizeof(entry)); 2381 if (retval != 0) { 2382 printf("%s: CTL_GET_PORT_LIST: copyout " 2383 "returned %d\n", __func__, retval); 2384 break; 2385 } 2386 i++; 2387 list->fill_num++; 2388 list->fill_len += sizeof(entry); 2389 } 2390 mtx_unlock(&softc->ctl_lock); 2391 2392 /* 2393 * If this is non-zero, we had a copyout fault, so there's 2394 * probably no point in attempting to set the status inside 2395 * the structure. 2396 */ 2397 if (retval != 0) 2398 break; 2399 2400 if (list->dropped_num > 0) 2401 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2402 else 2403 list->status = CTL_PORT_LIST_OK; 2404 break; 2405 } 2406 case CTL_DUMP_OOA: { 2407 struct ctl_lun *lun; 2408 union ctl_io *io; 2409 char printbuf[128]; 2410 struct sbuf sb; 2411 2412 mtx_lock(&softc->ctl_lock); 2413 printf("Dumping OOA queues:\n"); 2414 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2415 for (io = (union ctl_io *)TAILQ_FIRST( 2416 &lun->ooa_queue); io != NULL; 2417 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2418 ooa_links)) { 2419 sbuf_new(&sb, printbuf, sizeof(printbuf), 2420 SBUF_FIXEDLEN); 2421 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2422 (intmax_t)lun->lun, 2423 io->scsiio.tag_num, 2424 (io->io_hdr.flags & 2425 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2426 (io->io_hdr.flags & 2427 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2428 (io->io_hdr.flags & 2429 CTL_FLAG_ABORT) ? " ABORT" : "", 2430 (io->io_hdr.flags & 2431 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2432 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2433 sbuf_finish(&sb); 2434 printf("%s\n", sbuf_data(&sb)); 2435 } 2436 } 2437 printf("OOA queues dump done\n"); 2438 mtx_unlock(&softc->ctl_lock); 2439 break; 2440 } 2441 case CTL_GET_OOA: { 2442 struct ctl_lun *lun; 2443 struct ctl_ooa *ooa_hdr; 2444 struct ctl_ooa_entry *entries; 2445 uint32_t cur_fill_num; 2446 2447 ooa_hdr = (struct ctl_ooa *)addr; 2448 2449 if ((ooa_hdr->alloc_len == 0) 2450 || (ooa_hdr->alloc_num == 0)) { 2451 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2452 "must be non-zero\n", __func__, 2453 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2454 retval = EINVAL; 2455 break; 2456 } 2457 2458 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2459 sizeof(struct ctl_ooa_entry))) { 2460 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2461 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2462 __func__, ooa_hdr->alloc_len, 2463 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2464 retval = EINVAL; 2465 break; 2466 } 2467 2468 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2469 if (entries == NULL) { 2470 printf("%s: could not allocate %d bytes for OOA " 2471 "dump\n", __func__, ooa_hdr->alloc_len); 2472 retval = ENOMEM; 2473 break; 2474 } 2475 2476 mtx_lock(&softc->ctl_lock); 2477 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2478 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2479 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2480 mtx_unlock(&softc->ctl_lock); 2481 free(entries, M_CTL); 2482 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2483 __func__, (uintmax_t)ooa_hdr->lun_num); 2484 retval = EINVAL; 2485 break; 2486 } 2487 2488 cur_fill_num = 0; 2489 2490 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2491 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2492 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2493 ooa_hdr, entries); 2494 if (retval != 0) 2495 break; 2496 } 2497 if (retval != 0) { 2498 mtx_unlock(&softc->ctl_lock); 2499 free(entries, M_CTL); 2500 break; 2501 } 2502 } else { 2503 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2504 2505 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2506 entries); 2507 } 2508 mtx_unlock(&softc->ctl_lock); 2509 2510 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2511 ooa_hdr->fill_len = ooa_hdr->fill_num * 2512 sizeof(struct ctl_ooa_entry); 2513 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2514 if (retval != 0) { 2515 printf("%s: error copying out %d bytes for OOA dump\n", 2516 __func__, ooa_hdr->fill_len); 2517 } 2518 2519 getbintime(&ooa_hdr->cur_bt); 2520 2521 if (cur_fill_num > ooa_hdr->alloc_num) { 2522 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2523 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2524 } else { 2525 ooa_hdr->dropped_num = 0; 2526 ooa_hdr->status = CTL_OOA_OK; 2527 } 2528 2529 free(entries, M_CTL); 2530 break; 2531 } 2532 case CTL_CHECK_OOA: { 2533 union ctl_io *io; 2534 struct ctl_lun *lun; 2535 struct ctl_ooa_info *ooa_info; 2536 2537 2538 ooa_info = (struct ctl_ooa_info *)addr; 2539 2540 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2541 ooa_info->status = CTL_OOA_INVALID_LUN; 2542 break; 2543 } 2544 mtx_lock(&softc->ctl_lock); 2545 lun = softc->ctl_luns[ooa_info->lun_id]; 2546 if (lun == NULL) { 2547 mtx_unlock(&softc->ctl_lock); 2548 ooa_info->status = CTL_OOA_INVALID_LUN; 2549 break; 2550 } 2551 2552 ooa_info->num_entries = 0; 2553 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2554 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2555 &io->io_hdr, ooa_links)) { 2556 ooa_info->num_entries++; 2557 } 2558 2559 mtx_unlock(&softc->ctl_lock); 2560 ooa_info->status = CTL_OOA_SUCCESS; 2561 2562 break; 2563 } 2564 case CTL_HARD_START: 2565 case CTL_HARD_STOP: { 2566 struct ctl_fe_ioctl_startstop_info ss_info; 2567 struct cfi_metatask *metatask; 2568 struct mtx hs_mtx; 2569 2570 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2571 2572 cv_init(&ss_info.sem, "hard start/stop cv" ); 2573 2574 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2575 if (metatask == NULL) { 2576 retval = ENOMEM; 2577 mtx_destroy(&hs_mtx); 2578 break; 2579 } 2580 2581 if (cmd == CTL_HARD_START) 2582 metatask->tasktype = CFI_TASK_STARTUP; 2583 else 2584 metatask->tasktype = CFI_TASK_SHUTDOWN; 2585 2586 metatask->callback = ctl_ioctl_hard_startstop_callback; 2587 metatask->callback_arg = &ss_info; 2588 2589 cfi_action(metatask); 2590 2591 /* Wait for the callback */ 2592 mtx_lock(&hs_mtx); 2593 cv_wait_sig(&ss_info.sem, &hs_mtx); 2594 mtx_unlock(&hs_mtx); 2595 2596 /* 2597 * All information has been copied from the metatask by the 2598 * time cv_broadcast() is called, so we free the metatask here. 2599 */ 2600 cfi_free_metatask(metatask); 2601 2602 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2603 2604 mtx_destroy(&hs_mtx); 2605 break; 2606 } 2607 case CTL_BBRREAD: { 2608 struct ctl_bbrread_info *bbr_info; 2609 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2610 struct mtx bbr_mtx; 2611 struct cfi_metatask *metatask; 2612 2613 bbr_info = (struct ctl_bbrread_info *)addr; 2614 2615 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2616 2617 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2618 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2619 2620 fe_bbr_info.bbr_info = bbr_info; 2621 fe_bbr_info.lock = &bbr_mtx; 2622 2623 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2624 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2625 2626 if (metatask == NULL) { 2627 mtx_destroy(&bbr_mtx); 2628 cv_destroy(&fe_bbr_info.sem); 2629 retval = ENOMEM; 2630 break; 2631 } 2632 metatask->tasktype = CFI_TASK_BBRREAD; 2633 metatask->callback = ctl_ioctl_bbrread_callback; 2634 metatask->callback_arg = &fe_bbr_info; 2635 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2636 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2637 metatask->taskinfo.bbrread.len = bbr_info->len; 2638 2639 cfi_action(metatask); 2640 2641 mtx_lock(&bbr_mtx); 2642 while (fe_bbr_info.wakeup_done == 0) 2643 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2644 mtx_unlock(&bbr_mtx); 2645 2646 bbr_info->status = metatask->status; 2647 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2648 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2649 memcpy(&bbr_info->sense_data, 2650 &metatask->taskinfo.bbrread.sense_data, 2651 ctl_min(sizeof(bbr_info->sense_data), 2652 sizeof(metatask->taskinfo.bbrread.sense_data))); 2653 2654 cfi_free_metatask(metatask); 2655 2656 mtx_destroy(&bbr_mtx); 2657 cv_destroy(&fe_bbr_info.sem); 2658 2659 break; 2660 } 2661 case CTL_DELAY_IO: { 2662 struct ctl_io_delay_info *delay_info; 2663#ifdef CTL_IO_DELAY 2664 struct ctl_lun *lun; 2665#endif /* CTL_IO_DELAY */ 2666 2667 delay_info = (struct ctl_io_delay_info *)addr; 2668 2669#ifdef CTL_IO_DELAY 2670 mtx_lock(&softc->ctl_lock); 2671 2672 if ((delay_info->lun_id > CTL_MAX_LUNS) 2673 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2674 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2675 } else { 2676 lun = softc->ctl_luns[delay_info->lun_id]; 2677 2678 delay_info->status = CTL_DELAY_STATUS_OK; 2679 2680 switch (delay_info->delay_type) { 2681 case CTL_DELAY_TYPE_CONT: 2682 break; 2683 case CTL_DELAY_TYPE_ONESHOT: 2684 break; 2685 default: 2686 delay_info->status = 2687 CTL_DELAY_STATUS_INVALID_TYPE; 2688 break; 2689 } 2690 2691 switch (delay_info->delay_loc) { 2692 case CTL_DELAY_LOC_DATAMOVE: 2693 lun->delay_info.datamove_type = 2694 delay_info->delay_type; 2695 lun->delay_info.datamove_delay = 2696 delay_info->delay_secs; 2697 break; 2698 case CTL_DELAY_LOC_DONE: 2699 lun->delay_info.done_type = 2700 delay_info->delay_type; 2701 lun->delay_info.done_delay = 2702 delay_info->delay_secs; 2703 break; 2704 default: 2705 delay_info->status = 2706 CTL_DELAY_STATUS_INVALID_LOC; 2707 break; 2708 } 2709 } 2710 2711 mtx_unlock(&softc->ctl_lock); 2712#else 2713 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2714#endif /* CTL_IO_DELAY */ 2715 break; 2716 } 2717 case CTL_REALSYNC_SET: { 2718 int *syncstate; 2719 2720 syncstate = (int *)addr; 2721 2722 mtx_lock(&softc->ctl_lock); 2723 switch (*syncstate) { 2724 case 0: 2725 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2726 break; 2727 case 1: 2728 softc->flags |= CTL_FLAG_REAL_SYNC; 2729 break; 2730 default: 2731 retval = -EINVAL; 2732 break; 2733 } 2734 mtx_unlock(&softc->ctl_lock); 2735 break; 2736 } 2737 case CTL_REALSYNC_GET: { 2738 int *syncstate; 2739 2740 syncstate = (int*)addr; 2741 2742 mtx_lock(&softc->ctl_lock); 2743 if (softc->flags & CTL_FLAG_REAL_SYNC) 2744 *syncstate = 1; 2745 else 2746 *syncstate = 0; 2747 mtx_unlock(&softc->ctl_lock); 2748 2749 break; 2750 } 2751 case CTL_SETSYNC: 2752 case CTL_GETSYNC: { 2753 struct ctl_sync_info *sync_info; 2754 struct ctl_lun *lun; 2755 2756 sync_info = (struct ctl_sync_info *)addr; 2757 2758 mtx_lock(&softc->ctl_lock); 2759 lun = softc->ctl_luns[sync_info->lun_id]; 2760 if (lun == NULL) { 2761 mtx_unlock(&softc->ctl_lock); 2762 sync_info->status = CTL_GS_SYNC_NO_LUN; 2763 } 2764 /* 2765 * Get or set the sync interval. We're not bounds checking 2766 * in the set case, hopefully the user won't do something 2767 * silly. 2768 */ 2769 if (cmd == CTL_GETSYNC) 2770 sync_info->sync_interval = lun->sync_interval; 2771 else 2772 lun->sync_interval = sync_info->sync_interval; 2773 2774 mtx_unlock(&softc->ctl_lock); 2775 2776 sync_info->status = CTL_GS_SYNC_OK; 2777 2778 break; 2779 } 2780 case CTL_GETSTATS: { 2781 struct ctl_stats *stats; 2782 struct ctl_lun *lun; 2783 int i; 2784 2785 stats = (struct ctl_stats *)addr; 2786 2787 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2788 stats->alloc_len) { 2789 stats->status = CTL_SS_NEED_MORE_SPACE; 2790 stats->num_luns = softc->num_luns; 2791 break; 2792 } 2793 /* 2794 * XXX KDM no locking here. If the LUN list changes, 2795 * things can blow up. 2796 */ 2797 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2798 i++, lun = STAILQ_NEXT(lun, links)) { 2799 retval = copyout(&lun->stats, &stats->lun_stats[i], 2800 sizeof(lun->stats)); 2801 if (retval != 0) 2802 break; 2803 } 2804 stats->num_luns = softc->num_luns; 2805 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2806 softc->num_luns; 2807 stats->status = CTL_SS_OK; 2808#ifdef CTL_TIME_IO 2809 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2810#else 2811 stats->flags = CTL_STATS_FLAG_NONE; 2812#endif 2813 getnanouptime(&stats->timestamp); 2814 break; 2815 } 2816 case CTL_ERROR_INJECT: { 2817 struct ctl_error_desc *err_desc, *new_err_desc; 2818 struct ctl_lun *lun; 2819 2820 err_desc = (struct ctl_error_desc *)addr; 2821 2822 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2823 M_WAITOK | M_ZERO); 2824 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2825 2826 mtx_lock(&softc->ctl_lock); 2827 lun = softc->ctl_luns[err_desc->lun_id]; 2828 if (lun == NULL) { 2829 mtx_unlock(&softc->ctl_lock); 2830 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2831 __func__, (uintmax_t)err_desc->lun_id); 2832 retval = EINVAL; 2833 break; 2834 } 2835 2836 /* 2837 * We could do some checking here to verify the validity 2838 * of the request, but given the complexity of error 2839 * injection requests, the checking logic would be fairly 2840 * complex. 2841 * 2842 * For now, if the request is invalid, it just won't get 2843 * executed and might get deleted. 2844 */ 2845 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2846 2847 /* 2848 * XXX KDM check to make sure the serial number is unique, 2849 * in case we somehow manage to wrap. That shouldn't 2850 * happen for a very long time, but it's the right thing to 2851 * do. 2852 */ 2853 new_err_desc->serial = lun->error_serial; 2854 err_desc->serial = lun->error_serial; 2855 lun->error_serial++; 2856 2857 mtx_unlock(&softc->ctl_lock); 2858 break; 2859 } 2860 case CTL_ERROR_INJECT_DELETE: { 2861 struct ctl_error_desc *delete_desc, *desc, *desc2; 2862 struct ctl_lun *lun; 2863 int delete_done; 2864 2865 delete_desc = (struct ctl_error_desc *)addr; 2866 delete_done = 0; 2867 2868 mtx_lock(&softc->ctl_lock); 2869 lun = softc->ctl_luns[delete_desc->lun_id]; 2870 if (lun == NULL) { 2871 mtx_unlock(&softc->ctl_lock); 2872 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2873 __func__, (uintmax_t)delete_desc->lun_id); 2874 retval = EINVAL; 2875 break; 2876 } 2877 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2878 if (desc->serial != delete_desc->serial) 2879 continue; 2880 2881 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2882 links); 2883 free(desc, M_CTL); 2884 delete_done = 1; 2885 } 2886 mtx_unlock(&softc->ctl_lock); 2887 if (delete_done == 0) { 2888 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2889 "error serial %ju on LUN %u\n", __func__, 2890 delete_desc->serial, delete_desc->lun_id); 2891 retval = EINVAL; 2892 break; 2893 } 2894 break; 2895 } 2896 case CTL_DUMP_STRUCTS: { 2897 int i, j, k; 2898 struct ctl_frontend *fe; 2899 2900 printf("CTL IID to WWPN map start:\n"); 2901 for (i = 0; i < CTL_MAX_PORTS; i++) { 2902 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2903 if (softc->wwpn_iid[i][j].in_use == 0) 2904 continue; 2905 2906 printf("port %d iid %u WWPN %#jx\n", 2907 softc->wwpn_iid[i][j].port, 2908 softc->wwpn_iid[i][j].iid, 2909 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2910 } 2911 } 2912 printf("CTL IID to WWPN map end\n"); 2913 printf("CTL Persistent Reservation information start:\n"); 2914 for (i = 0; i < CTL_MAX_LUNS; i++) { 2915 struct ctl_lun *lun; 2916 2917 lun = softc->ctl_luns[i]; 2918 2919 if ((lun == NULL) 2920 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2921 continue; 2922 2923 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2924 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2925 if (lun->per_res[j+k].registered == 0) 2926 continue; 2927 printf("LUN %d port %d iid %d key " 2928 "%#jx\n", i, j, k, 2929 (uintmax_t)scsi_8btou64( 2930 lun->per_res[j+k].res_key.key)); 2931 } 2932 } 2933 } 2934 printf("CTL Persistent Reservation information end\n"); 2935 printf("CTL Frontends:\n"); 2936 /* 2937 * XXX KDM calling this without a lock. We'd likely want 2938 * to drop the lock before calling the frontend's dump 2939 * routine anyway. 2940 */ 2941 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2942 printf("Frontend %s Type %u pport %d vport %d WWNN " 2943 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2944 fe->physical_port, fe->virtual_port, 2945 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2946 2947 /* 2948 * Frontends are not required to support the dump 2949 * routine. 2950 */ 2951 if (fe->fe_dump == NULL) 2952 continue; 2953 2954 fe->fe_dump(); 2955 } 2956 printf("CTL Frontend information end\n"); 2957 break; 2958 } 2959 case CTL_LUN_REQ: { 2960 struct ctl_lun_req *lun_req; 2961 struct ctl_backend_driver *backend; 2962 2963 lun_req = (struct ctl_lun_req *)addr; 2964 2965 backend = ctl_backend_find(lun_req->backend); 2966 if (backend == NULL) { 2967 lun_req->status = CTL_LUN_ERROR; 2968 snprintf(lun_req->error_str, 2969 sizeof(lun_req->error_str), 2970 "Backend \"%s\" not found.", 2971 lun_req->backend); 2972 break; 2973 } 2974 if (lun_req->num_be_args > 0) { 2975 lun_req->kern_be_args = ctl_copyin_args( 2976 lun_req->num_be_args, 2977 lun_req->be_args, 2978 lun_req->error_str, 2979 sizeof(lun_req->error_str)); 2980 if (lun_req->kern_be_args == NULL) { 2981 lun_req->status = CTL_LUN_ERROR; 2982 break; 2983 } 2984 } 2985 2986 retval = backend->ioctl(dev, cmd, addr, flag, td); 2987 2988 if (lun_req->num_be_args > 0) { 2989 ctl_free_args(lun_req->num_be_args, 2990 lun_req->kern_be_args); 2991 } 2992 break; 2993 } 2994 case CTL_LUN_LIST: { 2995 struct sbuf *sb; 2996 struct ctl_lun *lun; 2997 struct ctl_lun_list *list; 2998 struct ctl_be_lun_option *opt; 2999 3000 list = (struct ctl_lun_list *)addr; 3001 3002 /* 3003 * Allocate a fixed length sbuf here, based on the length 3004 * of the user's buffer. We could allocate an auto-extending 3005 * buffer, and then tell the user how much larger our 3006 * amount of data is than his buffer, but that presents 3007 * some problems: 3008 * 3009 * 1. The sbuf(9) routines use a blocking malloc, and so 3010 * we can't hold a lock while calling them with an 3011 * auto-extending buffer. 3012 * 3013 * 2. There is not currently a LUN reference counting 3014 * mechanism, outside of outstanding transactions on 3015 * the LUN's OOA queue. So a LUN could go away on us 3016 * while we're getting the LUN number, backend-specific 3017 * information, etc. Thus, given the way things 3018 * currently work, we need to hold the CTL lock while 3019 * grabbing LUN information. 3020 * 3021 * So, from the user's standpoint, the best thing to do is 3022 * allocate what he thinks is a reasonable buffer length, 3023 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 3024 * double the buffer length and try again. (And repeat 3025 * that until he succeeds.) 3026 */ 3027 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3028 if (sb == NULL) { 3029 list->status = CTL_LUN_LIST_ERROR; 3030 snprintf(list->error_str, sizeof(list->error_str), 3031 "Unable to allocate %d bytes for LUN list", 3032 list->alloc_len); 3033 break; 3034 } 3035 3036 sbuf_printf(sb, "<ctllunlist>\n"); 3037 3038 mtx_lock(&softc->ctl_lock); 3039 3040 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3041 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3042 (uintmax_t)lun->lun); 3043 3044 /* 3045 * Bail out as soon as we see that we've overfilled 3046 * the buffer. 3047 */ 3048 if (retval != 0) 3049 break; 3050 3051 retval = sbuf_printf(sb, "<backend_type>%s" 3052 "</backend_type>\n", 3053 (lun->backend == NULL) ? "none" : 3054 lun->backend->name); 3055 3056 if (retval != 0) 3057 break; 3058 3059 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 3060 lun->be_lun->lun_type); 3061 3062 if (retval != 0) 3063 break; 3064 3065 if (lun->backend == NULL) { 3066 retval = sbuf_printf(sb, "</lun>\n"); 3067 if (retval != 0) 3068 break; 3069 continue; 3070 } 3071 3072 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3073 (lun->be_lun->maxlba > 0) ? 3074 lun->be_lun->maxlba + 1 : 0); 3075 3076 if (retval != 0) 3077 break; 3078 3079 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3080 lun->be_lun->blocksize); 3081 3082 if (retval != 0) 3083 break; 3084 3085 retval = sbuf_printf(sb, "<serial_number>"); 3086 3087 if (retval != 0) 3088 break; 3089 3090 retval = ctl_sbuf_printf_esc(sb, 3091 lun->be_lun->serial_num); 3092 3093 if (retval != 0) 3094 break; 3095 3096 retval = sbuf_printf(sb, "</serial_number>\n"); 3097 3098 if (retval != 0) 3099 break; 3100 3101 retval = sbuf_printf(sb, "<device_id>"); 3102 3103 if (retval != 0) 3104 break; 3105 3106 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3107 3108 if (retval != 0) 3109 break; 3110 3111 retval = sbuf_printf(sb, "</device_id>\n"); 3112 3113 if (retval != 0) 3114 break; 3115 3116 if (lun->backend->lun_info != NULL) { 3117 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3118 if (retval != 0) 3119 break; 3120 } 3121 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3122 retval = sbuf_printf(sb, "<%s>%s</%s>", opt->name, opt->value, opt->name); 3123 if (retval != 0) 3124 break; 3125 } 3126 3127 retval = sbuf_printf(sb, "</lun>\n"); 3128 3129 if (retval != 0) 3130 break; 3131 } 3132 mtx_unlock(&softc->ctl_lock); 3133 3134 if ((retval != 0) 3135 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3136 retval = 0; 3137 sbuf_delete(sb); 3138 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3139 snprintf(list->error_str, sizeof(list->error_str), 3140 "Out of space, %d bytes is too small", 3141 list->alloc_len); 3142 break; 3143 } 3144 3145 sbuf_finish(sb); 3146 3147 retval = copyout(sbuf_data(sb), list->lun_xml, 3148 sbuf_len(sb) + 1); 3149 3150 list->fill_len = sbuf_len(sb) + 1; 3151 list->status = CTL_LUN_LIST_OK; 3152 sbuf_delete(sb); 3153 break; 3154 } 3155 case CTL_ISCSI: { 3156 struct ctl_iscsi *ci; 3157 struct ctl_frontend *fe; 3158 3159 ci = (struct ctl_iscsi *)addr; 3160 3161 mtx_lock(&softc->ctl_lock); 3162 STAILQ_FOREACH(fe, &softc->fe_list, links) { 3163 if (strcmp(fe->port_name, "iscsi") == 0) 3164 break; 3165 } 3166 mtx_unlock(&softc->ctl_lock); 3167 3168 if (fe == NULL) { 3169 ci->status = CTL_ISCSI_ERROR; 3170 snprintf(ci->error_str, sizeof(ci->error_str), "Backend \"iscsi\" not found."); 3171 break; 3172 } 3173 3174 retval = fe->ioctl(dev, cmd, addr, flag, td); 3175 break; 3176 } 3177 default: { 3178 /* XXX KDM should we fix this? */ 3179#if 0 3180 struct ctl_backend_driver *backend; 3181 unsigned int type; 3182 int found; 3183 3184 found = 0; 3185 3186 /* 3187 * We encode the backend type as the ioctl type for backend 3188 * ioctls. So parse it out here, and then search for a 3189 * backend of this type. 3190 */ 3191 type = _IOC_TYPE(cmd); 3192 3193 STAILQ_FOREACH(backend, &softc->be_list, links) { 3194 if (backend->type == type) { 3195 found = 1; 3196 break; 3197 } 3198 } 3199 if (found == 0) { 3200 printf("ctl: unknown ioctl command %#lx or backend " 3201 "%d\n", cmd, type); 3202 retval = -EINVAL; 3203 break; 3204 } 3205 retval = backend->ioctl(dev, cmd, addr, flag, td); 3206#endif 3207 retval = ENOTTY; 3208 break; 3209 } 3210 } 3211 return (retval); 3212} 3213 3214uint32_t 3215ctl_get_initindex(struct ctl_nexus *nexus) 3216{ 3217 if (nexus->targ_port < CTL_MAX_PORTS) 3218 return (nexus->initid.id + 3219 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3220 else 3221 return (nexus->initid.id + 3222 ((nexus->targ_port - CTL_MAX_PORTS) * 3223 CTL_MAX_INIT_PER_PORT)); 3224} 3225 3226uint32_t 3227ctl_get_resindex(struct ctl_nexus *nexus) 3228{ 3229 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3230} 3231 3232uint32_t 3233ctl_port_idx(int port_num) 3234{ 3235 if (port_num < CTL_MAX_PORTS) 3236 return(port_num); 3237 else 3238 return(port_num - CTL_MAX_PORTS); 3239} 3240 3241/* 3242 * Note: This only works for bitmask sizes that are at least 32 bits, and 3243 * that are a power of 2. 3244 */ 3245int 3246ctl_ffz(uint32_t *mask, uint32_t size) 3247{ 3248 uint32_t num_chunks, num_pieces; 3249 int i, j; 3250 3251 num_chunks = (size >> 5); 3252 if (num_chunks == 0) 3253 num_chunks++; 3254 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3255 3256 for (i = 0; i < num_chunks; i++) { 3257 for (j = 0; j < num_pieces; j++) { 3258 if ((mask[i] & (1 << j)) == 0) 3259 return ((i << 5) + j); 3260 } 3261 } 3262 3263 return (-1); 3264} 3265 3266int 3267ctl_set_mask(uint32_t *mask, uint32_t bit) 3268{ 3269 uint32_t chunk, piece; 3270 3271 chunk = bit >> 5; 3272 piece = bit % (sizeof(uint32_t) * 8); 3273 3274 if ((mask[chunk] & (1 << piece)) != 0) 3275 return (-1); 3276 else 3277 mask[chunk] |= (1 << piece); 3278 3279 return (0); 3280} 3281 3282int 3283ctl_clear_mask(uint32_t *mask, uint32_t bit) 3284{ 3285 uint32_t chunk, piece; 3286 3287 chunk = bit >> 5; 3288 piece = bit % (sizeof(uint32_t) * 8); 3289 3290 if ((mask[chunk] & (1 << piece)) == 0) 3291 return (-1); 3292 else 3293 mask[chunk] &= ~(1 << piece); 3294 3295 return (0); 3296} 3297 3298int 3299ctl_is_set(uint32_t *mask, uint32_t bit) 3300{ 3301 uint32_t chunk, piece; 3302 3303 chunk = bit >> 5; 3304 piece = bit % (sizeof(uint32_t) * 8); 3305 3306 if ((mask[chunk] & (1 << piece)) == 0) 3307 return (0); 3308 else 3309 return (1); 3310} 3311 3312#ifdef unused 3313/* 3314 * The bus, target and lun are optional, they can be filled in later. 3315 * can_wait is used to determine whether we can wait on the malloc or not. 3316 */ 3317union ctl_io* 3318ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3319 uint32_t targ_lun, int can_wait) 3320{ 3321 union ctl_io *io; 3322 3323 if (can_wait) 3324 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3325 else 3326 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3327 3328 if (io != NULL) { 3329 io->io_hdr.io_type = io_type; 3330 io->io_hdr.targ_port = targ_port; 3331 /* 3332 * XXX KDM this needs to change/go away. We need to move 3333 * to a preallocated pool of ctl_scsiio structures. 3334 */ 3335 io->io_hdr.nexus.targ_target.id = targ_target; 3336 io->io_hdr.nexus.targ_lun = targ_lun; 3337 } 3338 3339 return (io); 3340} 3341 3342void 3343ctl_kfree_io(union ctl_io *io) 3344{ 3345 free(io, M_CTL); 3346} 3347#endif /* unused */ 3348 3349/* 3350 * ctl_softc, pool_type, total_ctl_io are passed in. 3351 * npool is passed out. 3352 */ 3353int 3354ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3355 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3356{ 3357 uint32_t i; 3358 union ctl_io *cur_io, *next_io; 3359 struct ctl_io_pool *pool; 3360 int retval; 3361 3362 retval = 0; 3363 3364 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3365 M_NOWAIT | M_ZERO); 3366 if (pool == NULL) { 3367 retval = -ENOMEM; 3368 goto bailout; 3369 } 3370 3371 pool->type = pool_type; 3372 pool->ctl_softc = ctl_softc; 3373 3374 mtx_lock(&ctl_softc->pool_lock); 3375 pool->id = ctl_softc->cur_pool_id++; 3376 mtx_unlock(&ctl_softc->pool_lock); 3377 3378 pool->flags = CTL_POOL_FLAG_NONE; 3379 pool->refcount = 1; /* Reference for validity. */ 3380 STAILQ_INIT(&pool->free_queue); 3381 3382 /* 3383 * XXX KDM other options here: 3384 * - allocate a page at a time 3385 * - allocate one big chunk of memory. 3386 * Page allocation might work well, but would take a little more 3387 * tracking. 3388 */ 3389 for (i = 0; i < total_ctl_io; i++) { 3390 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3391 M_NOWAIT); 3392 if (cur_io == NULL) { 3393 retval = ENOMEM; 3394 break; 3395 } 3396 cur_io->io_hdr.pool = pool; 3397 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3398 pool->total_ctl_io++; 3399 pool->free_ctl_io++; 3400 } 3401 3402 if (retval != 0) { 3403 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3404 cur_io != NULL; cur_io = next_io) { 3405 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3406 links); 3407 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3408 ctl_io_hdr, links); 3409 free(cur_io, M_CTL); 3410 } 3411 3412 free(pool, M_CTL); 3413 goto bailout; 3414 } 3415 mtx_lock(&ctl_softc->pool_lock); 3416 ctl_softc->num_pools++; 3417 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3418 /* 3419 * Increment our usage count if this is an external consumer, so we 3420 * can't get unloaded until the external consumer (most likely a 3421 * FETD) unloads and frees his pool. 3422 * 3423 * XXX KDM will this increment the caller's module use count, or 3424 * mine? 3425 */ 3426#if 0 3427 if ((pool_type != CTL_POOL_EMERGENCY) 3428 && (pool_type != CTL_POOL_INTERNAL) 3429 && (pool_type != CTL_POOL_IOCTL) 3430 && (pool_type != CTL_POOL_4OTHERSC)) 3431 MOD_INC_USE_COUNT; 3432#endif 3433 3434 mtx_unlock(&ctl_softc->pool_lock); 3435 3436 *npool = pool; 3437 3438bailout: 3439 3440 return (retval); 3441} 3442 3443static int 3444ctl_pool_acquire(struct ctl_io_pool *pool) 3445{ 3446 3447 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3448 3449 if (pool->flags & CTL_POOL_FLAG_INVALID) 3450 return (-EINVAL); 3451 3452 pool->refcount++; 3453 3454 return (0); 3455} 3456 3457static void 3458ctl_pool_release(struct ctl_io_pool *pool) 3459{ 3460 struct ctl_softc *ctl_softc = pool->ctl_softc; 3461 union ctl_io *io; 3462 3463 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3464 3465 if (--pool->refcount != 0) 3466 return; 3467 3468 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3469 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3470 links); 3471 free(io, M_CTL); 3472 } 3473 3474 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3475 ctl_softc->num_pools--; 3476 3477 /* 3478 * XXX KDM will this decrement the caller's usage count or mine? 3479 */ 3480#if 0 3481 if ((pool->type != CTL_POOL_EMERGENCY) 3482 && (pool->type != CTL_POOL_INTERNAL) 3483 && (pool->type != CTL_POOL_IOCTL)) 3484 MOD_DEC_USE_COUNT; 3485#endif 3486 3487 free(pool, M_CTL); 3488} 3489 3490void 3491ctl_pool_free(struct ctl_io_pool *pool) 3492{ 3493 struct ctl_softc *ctl_softc; 3494 3495 if (pool == NULL) 3496 return; 3497 3498 ctl_softc = pool->ctl_softc; 3499 mtx_lock(&ctl_softc->pool_lock); 3500 pool->flags |= CTL_POOL_FLAG_INVALID; 3501 ctl_pool_release(pool); 3502 mtx_unlock(&ctl_softc->pool_lock); 3503} 3504 3505/* 3506 * This routine does not block (except for spinlocks of course). 3507 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3508 * possible. 3509 */ 3510union ctl_io * 3511ctl_alloc_io(void *pool_ref) 3512{ 3513 union ctl_io *io; 3514 struct ctl_softc *ctl_softc; 3515 struct ctl_io_pool *pool, *npool; 3516 struct ctl_io_pool *emergency_pool; 3517 3518 pool = (struct ctl_io_pool *)pool_ref; 3519 3520 if (pool == NULL) { 3521 printf("%s: pool is NULL\n", __func__); 3522 return (NULL); 3523 } 3524 3525 emergency_pool = NULL; 3526 3527 ctl_softc = pool->ctl_softc; 3528 3529 mtx_lock(&ctl_softc->pool_lock); 3530 /* 3531 * First, try to get the io structure from the user's pool. 3532 */ 3533 if (ctl_pool_acquire(pool) == 0) { 3534 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3535 if (io != NULL) { 3536 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3537 pool->total_allocated++; 3538 pool->free_ctl_io--; 3539 mtx_unlock(&ctl_softc->pool_lock); 3540 return (io); 3541 } else 3542 ctl_pool_release(pool); 3543 } 3544 /* 3545 * If he doesn't have any io structures left, search for an 3546 * emergency pool and grab one from there. 3547 */ 3548 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3549 if (npool->type != CTL_POOL_EMERGENCY) 3550 continue; 3551 3552 if (ctl_pool_acquire(npool) != 0) 3553 continue; 3554 3555 emergency_pool = npool; 3556 3557 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3558 if (io != NULL) { 3559 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3560 npool->total_allocated++; 3561 npool->free_ctl_io--; 3562 mtx_unlock(&ctl_softc->pool_lock); 3563 return (io); 3564 } else 3565 ctl_pool_release(npool); 3566 } 3567 3568 /* Drop the spinlock before we malloc */ 3569 mtx_unlock(&ctl_softc->pool_lock); 3570 3571 /* 3572 * The emergency pool (if it exists) didn't have one, so try an 3573 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3574 */ 3575 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3576 if (io != NULL) { 3577 /* 3578 * If the emergency pool exists but is empty, add this 3579 * ctl_io to its list when it gets freed. 3580 */ 3581 if (emergency_pool != NULL) { 3582 mtx_lock(&ctl_softc->pool_lock); 3583 if (ctl_pool_acquire(emergency_pool) == 0) { 3584 io->io_hdr.pool = emergency_pool; 3585 emergency_pool->total_ctl_io++; 3586 /* 3587 * Need to bump this, otherwise 3588 * total_allocated and total_freed won't 3589 * match when we no longer have anything 3590 * outstanding. 3591 */ 3592 emergency_pool->total_allocated++; 3593 } 3594 mtx_unlock(&ctl_softc->pool_lock); 3595 } else 3596 io->io_hdr.pool = NULL; 3597 } 3598 3599 return (io); 3600} 3601 3602void 3603ctl_free_io(union ctl_io *io) 3604{ 3605 if (io == NULL) 3606 return; 3607 3608 /* 3609 * If this ctl_io has a pool, return it to that pool. 3610 */ 3611 if (io->io_hdr.pool != NULL) { 3612 struct ctl_io_pool *pool; 3613#if 0 3614 struct ctl_softc *ctl_softc; 3615 union ctl_io *tmp_io; 3616 unsigned long xflags; 3617 int i; 3618 3619 ctl_softc = control_softc; 3620#endif 3621 3622 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3623 3624 mtx_lock(&pool->ctl_softc->pool_lock); 3625#if 0 3626 save_flags(xflags); 3627 3628 for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST( 3629 &ctl_softc->task_queue); tmp_io != NULL; i++, 3630 tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr, 3631 links)) { 3632 if (tmp_io == io) { 3633 printf("%s: %p is still on the task queue!\n", 3634 __func__, tmp_io); 3635 printf("%s: (%d): type %d " 3636 "msg %d cdb %x iptl: " 3637 "%d:%d:%d:%d tag 0x%04x " 3638 "flg %#lx\n", 3639 __func__, i, 3640 tmp_io->io_hdr.io_type, 3641 tmp_io->io_hdr.msg_type, 3642 tmp_io->scsiio.cdb[0], 3643 tmp_io->io_hdr.nexus.initid.id, 3644 tmp_io->io_hdr.nexus.targ_port, 3645 tmp_io->io_hdr.nexus.targ_target.id, 3646 tmp_io->io_hdr.nexus.targ_lun, 3647 (tmp_io->io_hdr.io_type == 3648 CTL_IO_TASK) ? 3649 tmp_io->taskio.tag_num : 3650 tmp_io->scsiio.tag_num, 3651 xflags); 3652 panic("I/O still on the task queue!"); 3653 } 3654 } 3655#endif 3656 io->io_hdr.io_type = 0xff; 3657 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3658 pool->total_freed++; 3659 pool->free_ctl_io++; 3660 ctl_pool_release(pool); 3661 mtx_unlock(&pool->ctl_softc->pool_lock); 3662 } else { 3663 /* 3664 * Otherwise, just free it. We probably malloced it and 3665 * the emergency pool wasn't available. 3666 */ 3667 free(io, M_CTL); 3668 } 3669 3670} 3671 3672void 3673ctl_zero_io(union ctl_io *io) 3674{ 3675 void *pool_ref; 3676 3677 if (io == NULL) 3678 return; 3679 3680 /* 3681 * May need to preserve linked list pointers at some point too. 3682 */ 3683 pool_ref = io->io_hdr.pool; 3684 3685 memset(io, 0, sizeof(*io)); 3686 3687 io->io_hdr.pool = pool_ref; 3688} 3689 3690/* 3691 * This routine is currently used for internal copies of ctl_ios that need 3692 * to persist for some reason after we've already returned status to the 3693 * FETD. (Thus the flag set.) 3694 * 3695 * XXX XXX 3696 * Note that this makes a blind copy of all fields in the ctl_io, except 3697 * for the pool reference. This includes any memory that has been 3698 * allocated! That memory will no longer be valid after done has been 3699 * called, so this would be VERY DANGEROUS for command that actually does 3700 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3701 * start and stop commands, which don't transfer any data, so this is not a 3702 * problem. If it is used for anything else, the caller would also need to 3703 * allocate data buffer space and this routine would need to be modified to 3704 * copy the data buffer(s) as well. 3705 */ 3706void 3707ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3708{ 3709 void *pool_ref; 3710 3711 if ((src == NULL) 3712 || (dest == NULL)) 3713 return; 3714 3715 /* 3716 * May need to preserve linked list pointers at some point too. 3717 */ 3718 pool_ref = dest->io_hdr.pool; 3719 3720 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3721 3722 dest->io_hdr.pool = pool_ref; 3723 /* 3724 * We need to know that this is an internal copy, and doesn't need 3725 * to get passed back to the FETD that allocated it. 3726 */ 3727 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3728} 3729 3730#ifdef NEEDTOPORT 3731static void 3732ctl_update_power_subpage(struct copan_power_subpage *page) 3733{ 3734 int num_luns, num_partitions, config_type; 3735 struct ctl_softc *softc; 3736 cs_BOOL_t aor_present, shelf_50pct_power; 3737 cs_raidset_personality_t rs_type; 3738 int max_active_luns; 3739 3740 softc = control_softc; 3741 3742 /* subtract out the processor LUN */ 3743 num_luns = softc->num_luns - 1; 3744 /* 3745 * Default to 7 LUNs active, which was the only number we allowed 3746 * in the past. 3747 */ 3748 max_active_luns = 7; 3749 3750 num_partitions = config_GetRsPartitionInfo(); 3751 config_type = config_GetConfigType(); 3752 shelf_50pct_power = config_GetShelfPowerMode(); 3753 aor_present = config_IsAorRsPresent(); 3754 3755 rs_type = ddb_GetRsRaidType(1); 3756 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3757 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3758 EPRINT(0, "Unsupported RS type %d!", rs_type); 3759 } 3760 3761 3762 page->total_luns = num_luns; 3763 3764 switch (config_type) { 3765 case 40: 3766 /* 3767 * In a 40 drive configuration, it doesn't matter what DC 3768 * cards we have, whether we have AOR enabled or not, 3769 * partitioning or not, or what type of RAIDset we have. 3770 * In that scenario, we can power up every LUN we present 3771 * to the user. 3772 */ 3773 max_active_luns = num_luns; 3774 3775 break; 3776 case 64: 3777 if (shelf_50pct_power == CS_FALSE) { 3778 /* 25% power */ 3779 if (aor_present == CS_TRUE) { 3780 if (rs_type == 3781 CS_RAIDSET_PERSONALITY_RAID5) { 3782 max_active_luns = 7; 3783 } else if (rs_type == 3784 CS_RAIDSET_PERSONALITY_RAID1){ 3785 max_active_luns = 14; 3786 } else { 3787 /* XXX KDM now what?? */ 3788 } 3789 } else { 3790 if (rs_type == 3791 CS_RAIDSET_PERSONALITY_RAID5) { 3792 max_active_luns = 8; 3793 } else if (rs_type == 3794 CS_RAIDSET_PERSONALITY_RAID1){ 3795 max_active_luns = 16; 3796 } else { 3797 /* XXX KDM now what?? */ 3798 } 3799 } 3800 } else { 3801 /* 50% power */ 3802 /* 3803 * With 50% power in a 64 drive configuration, we 3804 * can power all LUNs we present. 3805 */ 3806 max_active_luns = num_luns; 3807 } 3808 break; 3809 case 112: 3810 if (shelf_50pct_power == CS_FALSE) { 3811 /* 25% power */ 3812 if (aor_present == CS_TRUE) { 3813 if (rs_type == 3814 CS_RAIDSET_PERSONALITY_RAID5) { 3815 max_active_luns = 7; 3816 } else if (rs_type == 3817 CS_RAIDSET_PERSONALITY_RAID1){ 3818 max_active_luns = 14; 3819 } else { 3820 /* XXX KDM now what?? */ 3821 } 3822 } else { 3823 if (rs_type == 3824 CS_RAIDSET_PERSONALITY_RAID5) { 3825 max_active_luns = 8; 3826 } else if (rs_type == 3827 CS_RAIDSET_PERSONALITY_RAID1){ 3828 max_active_luns = 16; 3829 } else { 3830 /* XXX KDM now what?? */ 3831 } 3832 } 3833 } else { 3834 /* 50% power */ 3835 if (aor_present == CS_TRUE) { 3836 if (rs_type == 3837 CS_RAIDSET_PERSONALITY_RAID5) { 3838 max_active_luns = 14; 3839 } else if (rs_type == 3840 CS_RAIDSET_PERSONALITY_RAID1){ 3841 /* 3842 * We're assuming here that disk 3843 * caching is enabled, and so we're 3844 * able to power up half of each 3845 * LUN, and cache all writes. 3846 */ 3847 max_active_luns = num_luns; 3848 } else { 3849 /* XXX KDM now what?? */ 3850 } 3851 } else { 3852 if (rs_type == 3853 CS_RAIDSET_PERSONALITY_RAID5) { 3854 max_active_luns = 15; 3855 } else if (rs_type == 3856 CS_RAIDSET_PERSONALITY_RAID1){ 3857 max_active_luns = 30; 3858 } else { 3859 /* XXX KDM now what?? */ 3860 } 3861 } 3862 } 3863 break; 3864 default: 3865 /* 3866 * In this case, we have an unknown configuration, so we 3867 * just use the default from above. 3868 */ 3869 break; 3870 } 3871 3872 page->max_active_luns = max_active_luns; 3873#if 0 3874 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3875 page->total_luns, page->max_active_luns); 3876#endif 3877} 3878#endif /* NEEDTOPORT */ 3879 3880/* 3881 * This routine could be used in the future to load default and/or saved 3882 * mode page parameters for a particuar lun. 3883 */ 3884static int 3885ctl_init_page_index(struct ctl_lun *lun) 3886{ 3887 int i; 3888 struct ctl_page_index *page_index; 3889 struct ctl_softc *softc; 3890 3891 memcpy(&lun->mode_pages.index, page_index_template, 3892 sizeof(page_index_template)); 3893 3894 softc = lun->ctl_softc; 3895 3896 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3897 3898 page_index = &lun->mode_pages.index[i]; 3899 /* 3900 * If this is a disk-only mode page, there's no point in 3901 * setting it up. For some pages, we have to have some 3902 * basic information about the disk in order to calculate the 3903 * mode page data. 3904 */ 3905 if ((lun->be_lun->lun_type != T_DIRECT) 3906 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3907 continue; 3908 3909 switch (page_index->page_code & SMPH_PC_MASK) { 3910 case SMS_FORMAT_DEVICE_PAGE: { 3911 struct scsi_format_page *format_page; 3912 3913 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3914 panic("subpage is incorrect!"); 3915 3916 /* 3917 * Sectors per track are set above. Bytes per 3918 * sector need to be set here on a per-LUN basis. 3919 */ 3920 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3921 &format_page_default, 3922 sizeof(format_page_default)); 3923 memcpy(&lun->mode_pages.format_page[ 3924 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3925 sizeof(format_page_changeable)); 3926 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3927 &format_page_default, 3928 sizeof(format_page_default)); 3929 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3930 &format_page_default, 3931 sizeof(format_page_default)); 3932 3933 format_page = &lun->mode_pages.format_page[ 3934 CTL_PAGE_CURRENT]; 3935 scsi_ulto2b(lun->be_lun->blocksize, 3936 format_page->bytes_per_sector); 3937 3938 format_page = &lun->mode_pages.format_page[ 3939 CTL_PAGE_DEFAULT]; 3940 scsi_ulto2b(lun->be_lun->blocksize, 3941 format_page->bytes_per_sector); 3942 3943 format_page = &lun->mode_pages.format_page[ 3944 CTL_PAGE_SAVED]; 3945 scsi_ulto2b(lun->be_lun->blocksize, 3946 format_page->bytes_per_sector); 3947 3948 page_index->page_data = 3949 (uint8_t *)lun->mode_pages.format_page; 3950 break; 3951 } 3952 case SMS_RIGID_DISK_PAGE: { 3953 struct scsi_rigid_disk_page *rigid_disk_page; 3954 uint32_t sectors_per_cylinder; 3955 uint64_t cylinders; 3956#ifndef __XSCALE__ 3957 int shift; 3958#endif /* !__XSCALE__ */ 3959 3960 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3961 panic("invalid subpage value %d", 3962 page_index->subpage); 3963 3964 /* 3965 * Rotation rate and sectors per track are set 3966 * above. We calculate the cylinders here based on 3967 * capacity. Due to the number of heads and 3968 * sectors per track we're using, smaller arrays 3969 * may turn out to have 0 cylinders. Linux and 3970 * FreeBSD don't pay attention to these mode pages 3971 * to figure out capacity, but Solaris does. It 3972 * seems to deal with 0 cylinders just fine, and 3973 * works out a fake geometry based on the capacity. 3974 */ 3975 memcpy(&lun->mode_pages.rigid_disk_page[ 3976 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3977 sizeof(rigid_disk_page_default)); 3978 memcpy(&lun->mode_pages.rigid_disk_page[ 3979 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3980 sizeof(rigid_disk_page_changeable)); 3981 memcpy(&lun->mode_pages.rigid_disk_page[ 3982 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3983 sizeof(rigid_disk_page_default)); 3984 memcpy(&lun->mode_pages.rigid_disk_page[ 3985 CTL_PAGE_SAVED], &rigid_disk_page_default, 3986 sizeof(rigid_disk_page_default)); 3987 3988 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3989 CTL_DEFAULT_HEADS; 3990 3991 /* 3992 * The divide method here will be more accurate, 3993 * probably, but results in floating point being 3994 * used in the kernel on i386 (__udivdi3()). On the 3995 * XScale, though, __udivdi3() is implemented in 3996 * software. 3997 * 3998 * The shift method for cylinder calculation is 3999 * accurate if sectors_per_cylinder is a power of 4000 * 2. Otherwise it might be slightly off -- you 4001 * might have a bit of a truncation problem. 4002 */ 4003#ifdef __XSCALE__ 4004 cylinders = (lun->be_lun->maxlba + 1) / 4005 sectors_per_cylinder; 4006#else 4007 for (shift = 31; shift > 0; shift--) { 4008 if (sectors_per_cylinder & (1 << shift)) 4009 break; 4010 } 4011 cylinders = (lun->be_lun->maxlba + 1) >> shift; 4012#endif 4013 4014 /* 4015 * We've basically got 3 bytes, or 24 bits for the 4016 * cylinder size in the mode page. If we're over, 4017 * just round down to 2^24. 4018 */ 4019 if (cylinders > 0xffffff) 4020 cylinders = 0xffffff; 4021 4022 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4023 CTL_PAGE_CURRENT]; 4024 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4025 4026 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4027 CTL_PAGE_DEFAULT]; 4028 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4029 4030 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4031 CTL_PAGE_SAVED]; 4032 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4033 4034 page_index->page_data = 4035 (uint8_t *)lun->mode_pages.rigid_disk_page; 4036 break; 4037 } 4038 case SMS_CACHING_PAGE: { 4039 4040 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4041 panic("invalid subpage value %d", 4042 page_index->subpage); 4043 /* 4044 * Defaults should be okay here, no calculations 4045 * needed. 4046 */ 4047 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 4048 &caching_page_default, 4049 sizeof(caching_page_default)); 4050 memcpy(&lun->mode_pages.caching_page[ 4051 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4052 sizeof(caching_page_changeable)); 4053 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4054 &caching_page_default, 4055 sizeof(caching_page_default)); 4056 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4057 &caching_page_default, 4058 sizeof(caching_page_default)); 4059 page_index->page_data = 4060 (uint8_t *)lun->mode_pages.caching_page; 4061 break; 4062 } 4063 case SMS_CONTROL_MODE_PAGE: { 4064 4065 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4066 panic("invalid subpage value %d", 4067 page_index->subpage); 4068 4069 /* 4070 * Defaults should be okay here, no calculations 4071 * needed. 4072 */ 4073 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4074 &control_page_default, 4075 sizeof(control_page_default)); 4076 memcpy(&lun->mode_pages.control_page[ 4077 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4078 sizeof(control_page_changeable)); 4079 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4080 &control_page_default, 4081 sizeof(control_page_default)); 4082 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4083 &control_page_default, 4084 sizeof(control_page_default)); 4085 page_index->page_data = 4086 (uint8_t *)lun->mode_pages.control_page; 4087 break; 4088 4089 } 4090 case SMS_VENDOR_SPECIFIC_PAGE:{ 4091 switch (page_index->subpage) { 4092 case PWR_SUBPAGE_CODE: { 4093 struct copan_power_subpage *current_page, 4094 *saved_page; 4095 4096 memcpy(&lun->mode_pages.power_subpage[ 4097 CTL_PAGE_CURRENT], 4098 &power_page_default, 4099 sizeof(power_page_default)); 4100 memcpy(&lun->mode_pages.power_subpage[ 4101 CTL_PAGE_CHANGEABLE], 4102 &power_page_changeable, 4103 sizeof(power_page_changeable)); 4104 memcpy(&lun->mode_pages.power_subpage[ 4105 CTL_PAGE_DEFAULT], 4106 &power_page_default, 4107 sizeof(power_page_default)); 4108 memcpy(&lun->mode_pages.power_subpage[ 4109 CTL_PAGE_SAVED], 4110 &power_page_default, 4111 sizeof(power_page_default)); 4112 page_index->page_data = 4113 (uint8_t *)lun->mode_pages.power_subpage; 4114 4115 current_page = (struct copan_power_subpage *) 4116 (page_index->page_data + 4117 (page_index->page_len * 4118 CTL_PAGE_CURRENT)); 4119 saved_page = (struct copan_power_subpage *) 4120 (page_index->page_data + 4121 (page_index->page_len * 4122 CTL_PAGE_SAVED)); 4123 break; 4124 } 4125 case APS_SUBPAGE_CODE: { 4126 struct copan_aps_subpage *current_page, 4127 *saved_page; 4128 4129 // This gets set multiple times but 4130 // it should always be the same. It's 4131 // only done during init so who cares. 4132 index_to_aps_page = i; 4133 4134 memcpy(&lun->mode_pages.aps_subpage[ 4135 CTL_PAGE_CURRENT], 4136 &aps_page_default, 4137 sizeof(aps_page_default)); 4138 memcpy(&lun->mode_pages.aps_subpage[ 4139 CTL_PAGE_CHANGEABLE], 4140 &aps_page_changeable, 4141 sizeof(aps_page_changeable)); 4142 memcpy(&lun->mode_pages.aps_subpage[ 4143 CTL_PAGE_DEFAULT], 4144 &aps_page_default, 4145 sizeof(aps_page_default)); 4146 memcpy(&lun->mode_pages.aps_subpage[ 4147 CTL_PAGE_SAVED], 4148 &aps_page_default, 4149 sizeof(aps_page_default)); 4150 page_index->page_data = 4151 (uint8_t *)lun->mode_pages.aps_subpage; 4152 4153 current_page = (struct copan_aps_subpage *) 4154 (page_index->page_data + 4155 (page_index->page_len * 4156 CTL_PAGE_CURRENT)); 4157 saved_page = (struct copan_aps_subpage *) 4158 (page_index->page_data + 4159 (page_index->page_len * 4160 CTL_PAGE_SAVED)); 4161 break; 4162 } 4163 case DBGCNF_SUBPAGE_CODE: { 4164 struct copan_debugconf_subpage *current_page, 4165 *saved_page; 4166 4167 memcpy(&lun->mode_pages.debugconf_subpage[ 4168 CTL_PAGE_CURRENT], 4169 &debugconf_page_default, 4170 sizeof(debugconf_page_default)); 4171 memcpy(&lun->mode_pages.debugconf_subpage[ 4172 CTL_PAGE_CHANGEABLE], 4173 &debugconf_page_changeable, 4174 sizeof(debugconf_page_changeable)); 4175 memcpy(&lun->mode_pages.debugconf_subpage[ 4176 CTL_PAGE_DEFAULT], 4177 &debugconf_page_default, 4178 sizeof(debugconf_page_default)); 4179 memcpy(&lun->mode_pages.debugconf_subpage[ 4180 CTL_PAGE_SAVED], 4181 &debugconf_page_default, 4182 sizeof(debugconf_page_default)); 4183 page_index->page_data = 4184 (uint8_t *)lun->mode_pages.debugconf_subpage; 4185 4186 current_page = (struct copan_debugconf_subpage *) 4187 (page_index->page_data + 4188 (page_index->page_len * 4189 CTL_PAGE_CURRENT)); 4190 saved_page = (struct copan_debugconf_subpage *) 4191 (page_index->page_data + 4192 (page_index->page_len * 4193 CTL_PAGE_SAVED)); 4194 break; 4195 } 4196 default: 4197 panic("invalid subpage value %d", 4198 page_index->subpage); 4199 break; 4200 } 4201 break; 4202 } 4203 default: 4204 panic("invalid page value %d", 4205 page_index->page_code & SMPH_PC_MASK); 4206 break; 4207 } 4208 } 4209 4210 return (CTL_RETVAL_COMPLETE); 4211} 4212 4213/* 4214 * LUN allocation. 4215 * 4216 * Requirements: 4217 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4218 * wants us to allocate the LUN and he can block. 4219 * - ctl_softc is always set 4220 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4221 * 4222 * Returns 0 for success, non-zero (errno) for failure. 4223 */ 4224static int 4225ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4226 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4227{ 4228 struct ctl_lun *nlun, *lun; 4229 struct ctl_frontend *fe; 4230 int lun_number, i, lun_malloced; 4231 4232 if (be_lun == NULL) 4233 return (EINVAL); 4234 4235 /* 4236 * We currently only support Direct Access or Processor LUN types. 4237 */ 4238 switch (be_lun->lun_type) { 4239 case T_DIRECT: 4240 break; 4241 case T_PROCESSOR: 4242 break; 4243 case T_SEQUENTIAL: 4244 case T_CHANGER: 4245 default: 4246 be_lun->lun_config_status(be_lun->be_lun, 4247 CTL_LUN_CONFIG_FAILURE); 4248 break; 4249 } 4250 if (ctl_lun == NULL) { 4251 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4252 lun_malloced = 1; 4253 } else { 4254 lun_malloced = 0; 4255 lun = ctl_lun; 4256 } 4257 4258 memset(lun, 0, sizeof(*lun)); 4259 if (lun_malloced) 4260 lun->flags = CTL_LUN_MALLOCED; 4261 4262 mtx_lock(&ctl_softc->ctl_lock); 4263 /* 4264 * See if the caller requested a particular LUN number. If so, see 4265 * if it is available. Otherwise, allocate the first available LUN. 4266 */ 4267 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4268 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4269 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4270 mtx_unlock(&ctl_softc->ctl_lock); 4271 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4272 printf("ctl: requested LUN ID %d is higher " 4273 "than CTL_MAX_LUNS - 1 (%d)\n", 4274 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4275 } else { 4276 /* 4277 * XXX KDM return an error, or just assign 4278 * another LUN ID in this case?? 4279 */ 4280 printf("ctl: requested LUN ID %d is already " 4281 "in use\n", be_lun->req_lun_id); 4282 } 4283 if (lun->flags & CTL_LUN_MALLOCED) 4284 free(lun, M_CTL); 4285 be_lun->lun_config_status(be_lun->be_lun, 4286 CTL_LUN_CONFIG_FAILURE); 4287 return (ENOSPC); 4288 } 4289 lun_number = be_lun->req_lun_id; 4290 } else { 4291 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4292 if (lun_number == -1) { 4293 mtx_unlock(&ctl_softc->ctl_lock); 4294 printf("ctl: can't allocate LUN on target %ju, out of " 4295 "LUNs\n", (uintmax_t)target_id.id); 4296 if (lun->flags & CTL_LUN_MALLOCED) 4297 free(lun, M_CTL); 4298 be_lun->lun_config_status(be_lun->be_lun, 4299 CTL_LUN_CONFIG_FAILURE); 4300 return (ENOSPC); 4301 } 4302 } 4303 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4304 4305 lun->target = target_id; 4306 lun->lun = lun_number; 4307 lun->be_lun = be_lun; 4308 /* 4309 * The processor LUN is always enabled. Disk LUNs come on line 4310 * disabled, and must be enabled by the backend. 4311 */ 4312 lun->flags |= CTL_LUN_DISABLED; 4313 lun->backend = be_lun->be; 4314 be_lun->ctl_lun = lun; 4315 be_lun->lun_id = lun_number; 4316 atomic_add_int(&be_lun->be->num_luns, 1); 4317 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4318 lun->flags |= CTL_LUN_STOPPED; 4319 4320 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4321 lun->flags |= CTL_LUN_INOPERABLE; 4322 4323 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4324 lun->flags |= CTL_LUN_PRIMARY_SC; 4325 4326 lun->ctl_softc = ctl_softc; 4327 TAILQ_INIT(&lun->ooa_queue); 4328 TAILQ_INIT(&lun->blocked_queue); 4329 STAILQ_INIT(&lun->error_list); 4330 4331 /* 4332 * Initialize the mode page index. 4333 */ 4334 ctl_init_page_index(lun); 4335 4336 /* 4337 * Set the poweron UA for all initiators on this LUN only. 4338 */ 4339 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4340 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4341 4342 /* 4343 * Now, before we insert this lun on the lun list, set the lun 4344 * inventory changed UA for all other luns. 4345 */ 4346 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4347 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4348 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4349 } 4350 } 4351 4352 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4353 4354 ctl_softc->ctl_luns[lun_number] = lun; 4355 4356 ctl_softc->num_luns++; 4357 4358 /* Setup statistics gathering */ 4359 lun->stats.device_type = be_lun->lun_type; 4360 lun->stats.lun_number = lun_number; 4361 if (lun->stats.device_type == T_DIRECT) 4362 lun->stats.blocksize = be_lun->blocksize; 4363 else 4364 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4365 for (i = 0;i < CTL_MAX_PORTS;i++) 4366 lun->stats.ports[i].targ_port = i; 4367 4368 mtx_unlock(&ctl_softc->ctl_lock); 4369 4370 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4371 4372 /* 4373 * Run through each registered FETD and bring it online if it isn't 4374 * already. Enable the target ID if it hasn't been enabled, and 4375 * enable this particular LUN. 4376 */ 4377 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4378 int retval; 4379 4380 /* 4381 * XXX KDM this only works for ONE TARGET ID. We'll need 4382 * to do things differently if we go to a multiple target 4383 * ID scheme. 4384 */ 4385 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4386 4387 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4388 if (retval != 0) { 4389 printf("ctl_alloc_lun: FETD %s port %d " 4390 "returned error %d for targ_enable on " 4391 "target %ju\n", fe->port_name, 4392 fe->targ_port, retval, 4393 (uintmax_t)target_id.id); 4394 } else 4395 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4396 } 4397 4398 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4399 if (retval != 0) { 4400 printf("ctl_alloc_lun: FETD %s port %d returned error " 4401 "%d for lun_enable on target %ju lun %d\n", 4402 fe->port_name, fe->targ_port, retval, 4403 (uintmax_t)target_id.id, lun_number); 4404 } else 4405 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4406 } 4407 return (0); 4408} 4409 4410/* 4411 * Delete a LUN. 4412 * Assumptions: 4413 * - LUN has already been marked invalid and any pending I/O has been taken 4414 * care of. 4415 */ 4416static int 4417ctl_free_lun(struct ctl_lun *lun) 4418{ 4419 struct ctl_softc *softc; 4420#if 0 4421 struct ctl_frontend *fe; 4422#endif 4423 struct ctl_lun *nlun; 4424 union ctl_io *io, *next_io; 4425 int i; 4426 4427 softc = lun->ctl_softc; 4428 4429 mtx_assert(&softc->ctl_lock, MA_OWNED); 4430 4431 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4432 4433 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4434 4435 softc->ctl_luns[lun->lun] = NULL; 4436 4437 if (TAILQ_FIRST(&lun->ooa_queue) != NULL) { 4438 printf("ctl_free_lun: aieee!! freeing a LUN with " 4439 "outstanding I/O!!\n"); 4440 } 4441 4442 /* 4443 * If we have anything pending on the RtR queue, remove it. 4444 */ 4445 for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL; 4446 io = next_io) { 4447 uint32_t targ_lun; 4448 4449 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 4450 targ_lun = io->io_hdr.nexus.targ_lun; 4451 if (io->io_hdr.nexus.lun_map_fn != NULL) 4452 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 4453 if ((io->io_hdr.nexus.targ_target.id == lun->target.id) 4454 && (targ_lun == lun->lun)) 4455 STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr, 4456 ctl_io_hdr, links); 4457 } 4458 4459 /* 4460 * Then remove everything from the blocked queue. 4461 */ 4462 for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL; 4463 io = next_io) { 4464 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links); 4465 TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links); 4466 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 4467 } 4468 4469 /* 4470 * Now clear out the OOA queue, and free all the I/O. 4471 * XXX KDM should we notify the FETD here? We probably need to 4472 * quiesce the LUN before deleting it. 4473 */ 4474 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL; 4475 io = next_io) { 4476 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links); 4477 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 4478 ctl_free_io(io); 4479 } 4480 4481 softc->num_luns--; 4482 4483 /* 4484 * XXX KDM this scheme only works for a single target/multiple LUN 4485 * setup. It needs to be revamped for a multiple target scheme. 4486 * 4487 * XXX KDM this results in fe->lun_disable() getting called twice, 4488 * once when ctl_disable_lun() is called, and a second time here. 4489 * We really need to re-think the LUN disable semantics. There 4490 * should probably be several steps/levels to LUN removal: 4491 * - disable 4492 * - invalidate 4493 * - free 4494 * 4495 * Right now we only have a disable method when communicating to 4496 * the front end ports, at least for individual LUNs. 4497 */ 4498#if 0 4499 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4500 int retval; 4501 4502 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4503 lun->lun); 4504 if (retval != 0) { 4505 printf("ctl_free_lun: FETD %s port %d returned error " 4506 "%d for lun_disable on target %ju lun %jd\n", 4507 fe->port_name, fe->targ_port, retval, 4508 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4509 } 4510 4511 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4512 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4513 4514 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4515 if (retval != 0) { 4516 printf("ctl_free_lun: FETD %s port %d " 4517 "returned error %d for targ_disable on " 4518 "target %ju\n", fe->port_name, 4519 fe->targ_port, retval, 4520 (uintmax_t)lun->target.id); 4521 } else 4522 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4523 4524 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4525 continue; 4526 4527#if 0 4528 fe->port_offline(fe->onoff_arg); 4529 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4530#endif 4531 } 4532 } 4533#endif 4534 4535 /* 4536 * Tell the backend to free resources, if this LUN has a backend. 4537 */ 4538 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4539 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4540 4541 if (lun->flags & CTL_LUN_MALLOCED) 4542 free(lun, M_CTL); 4543 4544 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4545 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4546 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4547 } 4548 } 4549 4550 return (0); 4551} 4552 4553static void 4554ctl_create_lun(struct ctl_be_lun *be_lun) 4555{ 4556 struct ctl_softc *ctl_softc; 4557 4558 ctl_softc = control_softc; 4559 4560 /* 4561 * ctl_alloc_lun() should handle all potential failure cases. 4562 */ 4563 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4564} 4565 4566int 4567ctl_add_lun(struct ctl_be_lun *be_lun) 4568{ 4569 struct ctl_softc *ctl_softc; 4570 4571 ctl_softc = control_softc; 4572 4573 mtx_lock(&ctl_softc->ctl_lock); 4574 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4575 mtx_unlock(&ctl_softc->ctl_lock); 4576 4577 ctl_wakeup_thread(); 4578 4579 return (0); 4580} 4581 4582int 4583ctl_enable_lun(struct ctl_be_lun *be_lun) 4584{ 4585 struct ctl_softc *ctl_softc; 4586 struct ctl_frontend *fe, *nfe; 4587 struct ctl_lun *lun; 4588 int retval; 4589 4590 ctl_softc = control_softc; 4591 4592 lun = (struct ctl_lun *)be_lun->ctl_lun; 4593 4594 mtx_lock(&ctl_softc->ctl_lock); 4595 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4596 /* 4597 * eh? Why did we get called if the LUN is already 4598 * enabled? 4599 */ 4600 mtx_unlock(&ctl_softc->ctl_lock); 4601 return (0); 4602 } 4603 lun->flags &= ~CTL_LUN_DISABLED; 4604 4605 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4606 nfe = STAILQ_NEXT(fe, links); 4607 4608 /* 4609 * Drop the lock while we call the FETD's enable routine. 4610 * This can lead to a callback into CTL (at least in the 4611 * case of the internal initiator frontend. 4612 */ 4613 mtx_unlock(&ctl_softc->ctl_lock); 4614 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4615 mtx_lock(&ctl_softc->ctl_lock); 4616 if (retval != 0) { 4617 printf("%s: FETD %s port %d returned error " 4618 "%d for lun_enable on target %ju lun %jd\n", 4619 __func__, fe->port_name, fe->targ_port, retval, 4620 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4621 } 4622#if 0 4623 else { 4624 /* NOTE: TODO: why does lun enable affect port status? */ 4625 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4626 } 4627#endif 4628 } 4629 4630 mtx_unlock(&ctl_softc->ctl_lock); 4631 4632 return (0); 4633} 4634 4635int 4636ctl_disable_lun(struct ctl_be_lun *be_lun) 4637{ 4638 struct ctl_softc *ctl_softc; 4639 struct ctl_frontend *fe; 4640 struct ctl_lun *lun; 4641 int retval; 4642 4643 ctl_softc = control_softc; 4644 4645 lun = (struct ctl_lun *)be_lun->ctl_lun; 4646 4647 mtx_lock(&ctl_softc->ctl_lock); 4648 4649 if (lun->flags & CTL_LUN_DISABLED) { 4650 mtx_unlock(&ctl_softc->ctl_lock); 4651 return (0); 4652 } 4653 lun->flags |= CTL_LUN_DISABLED; 4654 4655 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4656 mtx_unlock(&ctl_softc->ctl_lock); 4657 /* 4658 * Drop the lock before we call the frontend's disable 4659 * routine, to avoid lock order reversals. 4660 * 4661 * XXX KDM what happens if the frontend list changes while 4662 * we're traversing it? It's unlikely, but should be handled. 4663 */ 4664 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4665 lun->lun); 4666 mtx_lock(&ctl_softc->ctl_lock); 4667 if (retval != 0) { 4668 printf("ctl_alloc_lun: FETD %s port %d returned error " 4669 "%d for lun_disable on target %ju lun %jd\n", 4670 fe->port_name, fe->targ_port, retval, 4671 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4672 } 4673 } 4674 4675 mtx_unlock(&ctl_softc->ctl_lock); 4676 4677 return (0); 4678} 4679 4680int 4681ctl_start_lun(struct ctl_be_lun *be_lun) 4682{ 4683 struct ctl_softc *ctl_softc; 4684 struct ctl_lun *lun; 4685 4686 ctl_softc = control_softc; 4687 4688 lun = (struct ctl_lun *)be_lun->ctl_lun; 4689 4690 mtx_lock(&ctl_softc->ctl_lock); 4691 lun->flags &= ~CTL_LUN_STOPPED; 4692 mtx_unlock(&ctl_softc->ctl_lock); 4693 4694 return (0); 4695} 4696 4697int 4698ctl_stop_lun(struct ctl_be_lun *be_lun) 4699{ 4700 struct ctl_softc *ctl_softc; 4701 struct ctl_lun *lun; 4702 4703 ctl_softc = control_softc; 4704 4705 lun = (struct ctl_lun *)be_lun->ctl_lun; 4706 4707 mtx_lock(&ctl_softc->ctl_lock); 4708 lun->flags |= CTL_LUN_STOPPED; 4709 mtx_unlock(&ctl_softc->ctl_lock); 4710 4711 return (0); 4712} 4713 4714int 4715ctl_lun_offline(struct ctl_be_lun *be_lun) 4716{ 4717 struct ctl_softc *ctl_softc; 4718 struct ctl_lun *lun; 4719 4720 ctl_softc = control_softc; 4721 4722 lun = (struct ctl_lun *)be_lun->ctl_lun; 4723 4724 mtx_lock(&ctl_softc->ctl_lock); 4725 lun->flags |= CTL_LUN_OFFLINE; 4726 mtx_unlock(&ctl_softc->ctl_lock); 4727 4728 return (0); 4729} 4730 4731int 4732ctl_lun_online(struct ctl_be_lun *be_lun) 4733{ 4734 struct ctl_softc *ctl_softc; 4735 struct ctl_lun *lun; 4736 4737 ctl_softc = control_softc; 4738 4739 lun = (struct ctl_lun *)be_lun->ctl_lun; 4740 4741 mtx_lock(&ctl_softc->ctl_lock); 4742 lun->flags &= ~CTL_LUN_OFFLINE; 4743 mtx_unlock(&ctl_softc->ctl_lock); 4744 4745 return (0); 4746} 4747 4748int 4749ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4750{ 4751 struct ctl_softc *ctl_softc; 4752 struct ctl_lun *lun; 4753 4754 ctl_softc = control_softc; 4755 4756 lun = (struct ctl_lun *)be_lun->ctl_lun; 4757 4758 mtx_lock(&ctl_softc->ctl_lock); 4759 4760 /* 4761 * The LUN needs to be disabled before it can be marked invalid. 4762 */ 4763 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4764 mtx_unlock(&ctl_softc->ctl_lock); 4765 return (-1); 4766 } 4767 /* 4768 * Mark the LUN invalid. 4769 */ 4770 lun->flags |= CTL_LUN_INVALID; 4771 4772 /* 4773 * If there is nothing in the OOA queue, go ahead and free the LUN. 4774 * If we have something in the OOA queue, we'll free it when the 4775 * last I/O completes. 4776 */ 4777 if (TAILQ_FIRST(&lun->ooa_queue) == NULL) 4778 ctl_free_lun(lun); 4779 mtx_unlock(&ctl_softc->ctl_lock); 4780 4781 return (0); 4782} 4783 4784int 4785ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4786{ 4787 struct ctl_softc *ctl_softc; 4788 struct ctl_lun *lun; 4789 4790 ctl_softc = control_softc; 4791 lun = (struct ctl_lun *)be_lun->ctl_lun; 4792 4793 mtx_lock(&ctl_softc->ctl_lock); 4794 lun->flags |= CTL_LUN_INOPERABLE; 4795 mtx_unlock(&ctl_softc->ctl_lock); 4796 4797 return (0); 4798} 4799 4800int 4801ctl_lun_operable(struct ctl_be_lun *be_lun) 4802{ 4803 struct ctl_softc *ctl_softc; 4804 struct ctl_lun *lun; 4805 4806 ctl_softc = control_softc; 4807 lun = (struct ctl_lun *)be_lun->ctl_lun; 4808 4809 mtx_lock(&ctl_softc->ctl_lock); 4810 lun->flags &= ~CTL_LUN_INOPERABLE; 4811 mtx_unlock(&ctl_softc->ctl_lock); 4812 4813 return (0); 4814} 4815 4816int 4817ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4818 int lock) 4819{ 4820 struct ctl_softc *softc; 4821 struct ctl_lun *lun; 4822 struct copan_aps_subpage *current_sp; 4823 struct ctl_page_index *page_index; 4824 int i; 4825 4826 softc = control_softc; 4827 4828 mtx_lock(&softc->ctl_lock); 4829 4830 lun = (struct ctl_lun *)be_lun->ctl_lun; 4831 4832 page_index = NULL; 4833 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4834 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4835 APS_PAGE_CODE) 4836 continue; 4837 4838 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4839 continue; 4840 page_index = &lun->mode_pages.index[i]; 4841 } 4842 4843 if (page_index == NULL) { 4844 mtx_unlock(&softc->ctl_lock); 4845 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4846 (uintmax_t)lun->lun); 4847 return (1); 4848 } 4849#if 0 4850 if ((softc->aps_locked_lun != 0) 4851 && (softc->aps_locked_lun != lun->lun)) { 4852 printf("%s: attempt to lock LUN %llu when %llu is already " 4853 "locked\n"); 4854 mtx_unlock(&softc->ctl_lock); 4855 return (1); 4856 } 4857#endif 4858 4859 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4860 (page_index->page_len * CTL_PAGE_CURRENT)); 4861 4862 if (lock != 0) { 4863 current_sp->lock_active = APS_LOCK_ACTIVE; 4864 softc->aps_locked_lun = lun->lun; 4865 } else { 4866 current_sp->lock_active = 0; 4867 softc->aps_locked_lun = 0; 4868 } 4869 4870 4871 /* 4872 * If we're in HA mode, try to send the lock message to the other 4873 * side. 4874 */ 4875 if (ctl_is_single == 0) { 4876 int isc_retval; 4877 union ctl_ha_msg lock_msg; 4878 4879 lock_msg.hdr.nexus = *nexus; 4880 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4881 if (lock != 0) 4882 lock_msg.aps.lock_flag = 1; 4883 else 4884 lock_msg.aps.lock_flag = 0; 4885 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4886 sizeof(lock_msg), 0); 4887 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4888 printf("%s: APS (lock=%d) error returned from " 4889 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4890 mtx_unlock(&softc->ctl_lock); 4891 return (1); 4892 } 4893 } 4894 4895 mtx_unlock(&softc->ctl_lock); 4896 4897 return (0); 4898} 4899 4900void 4901ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4902{ 4903 struct ctl_lun *lun; 4904 struct ctl_softc *softc; 4905 int i; 4906 4907 softc = control_softc; 4908 4909 mtx_lock(&softc->ctl_lock); 4910 4911 lun = (struct ctl_lun *)be_lun->ctl_lun; 4912 4913 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4914 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4915 4916 mtx_unlock(&softc->ctl_lock); 4917} 4918 4919/* 4920 * Backend "memory move is complete" callback for requests that never 4921 * make it down to say RAIDCore's configuration code. 4922 */ 4923int 4924ctl_config_move_done(union ctl_io *io) 4925{ 4926 int retval; 4927 4928 retval = CTL_RETVAL_COMPLETE; 4929 4930 4931 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4932 /* 4933 * XXX KDM this shouldn't happen, but what if it does? 4934 */ 4935 if (io->io_hdr.io_type != CTL_IO_SCSI) 4936 panic("I/O type isn't CTL_IO_SCSI!"); 4937 4938 if ((io->io_hdr.port_status == 0) 4939 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4940 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4941 io->io_hdr.status = CTL_SUCCESS; 4942 else if ((io->io_hdr.port_status != 0) 4943 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4944 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4945 /* 4946 * For hardware error sense keys, the sense key 4947 * specific value is defined to be a retry count, 4948 * but we use it to pass back an internal FETD 4949 * error code. XXX KDM Hopefully the FETD is only 4950 * using 16 bits for an error code, since that's 4951 * all the space we have in the sks field. 4952 */ 4953 ctl_set_internal_failure(&io->scsiio, 4954 /*sks_valid*/ 1, 4955 /*retry_count*/ 4956 io->io_hdr.port_status); 4957 free(io->scsiio.kern_data_ptr, M_CTL); 4958 ctl_done(io); 4959 goto bailout; 4960 } 4961 4962 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4963 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4964 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4965 /* 4966 * XXX KDM just assuming a single pointer here, and not a 4967 * S/G list. If we start using S/G lists for config data, 4968 * we'll need to know how to clean them up here as well. 4969 */ 4970 free(io->scsiio.kern_data_ptr, M_CTL); 4971 /* Hopefully the user has already set the status... */ 4972 ctl_done(io); 4973 } else { 4974 /* 4975 * XXX KDM now we need to continue data movement. Some 4976 * options: 4977 * - call ctl_scsiio() again? We don't do this for data 4978 * writes, because for those at least we know ahead of 4979 * time where the write will go and how long it is. For 4980 * config writes, though, that information is largely 4981 * contained within the write itself, thus we need to 4982 * parse out the data again. 4983 * 4984 * - Call some other function once the data is in? 4985 */ 4986 4987 /* 4988 * XXX KDM call ctl_scsiio() again for now, and check flag 4989 * bits to see whether we're allocated or not. 4990 */ 4991 retval = ctl_scsiio(&io->scsiio); 4992 } 4993bailout: 4994 return (retval); 4995} 4996 4997/* 4998 * This gets called by a backend driver when it is done with a 4999 * configuration write. 5000 */ 5001void 5002ctl_config_write_done(union ctl_io *io) 5003{ 5004 /* 5005 * If the IO_CONT flag is set, we need to call the supplied 5006 * function to continue processing the I/O, instead of completing 5007 * the I/O just yet. 5008 * 5009 * If there is an error, though, we don't want to keep processing. 5010 * Instead, just send status back to the initiator. 5011 */ 5012 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5013 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5014 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5015 io->scsiio.io_cont(io); 5016 return; 5017 } 5018 /* 5019 * Since a configuration write can be done for commands that actually 5020 * have data allocated, like write buffer, and commands that have 5021 * no data, like start/stop unit, we need to check here. 5022 */ 5023 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5024 free(io->scsiio.kern_data_ptr, M_CTL); 5025 ctl_done(io); 5026} 5027 5028/* 5029 * SCSI release command. 5030 */ 5031int 5032ctl_scsi_release(struct ctl_scsiio *ctsio) 5033{ 5034 int length, longid, thirdparty_id, resv_id; 5035 struct ctl_softc *ctl_softc; 5036 struct ctl_lun *lun; 5037 5038 length = 0; 5039 resv_id = 0; 5040 5041 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5042 5043 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5044 ctl_softc = control_softc; 5045 5046 switch (ctsio->cdb[0]) { 5047 case RELEASE: { 5048 struct scsi_release *cdb; 5049 5050 cdb = (struct scsi_release *)ctsio->cdb; 5051 if ((cdb->byte2 & 0x1f) != 0) { 5052 ctl_set_invalid_field(ctsio, 5053 /*sks_valid*/ 1, 5054 /*command*/ 1, 5055 /*field*/ 1, 5056 /*bit_valid*/ 0, 5057 /*bit*/ 0); 5058 ctl_done((union ctl_io *)ctsio); 5059 return (CTL_RETVAL_COMPLETE); 5060 } 5061 break; 5062 } 5063 case RELEASE_10: { 5064 struct scsi_release_10 *cdb; 5065 5066 cdb = (struct scsi_release_10 *)ctsio->cdb; 5067 5068 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5069 ctl_set_invalid_field(ctsio, 5070 /*sks_valid*/ 1, 5071 /*command*/ 1, 5072 /*field*/ 1, 5073 /*bit_valid*/ 1, 5074 /*bit*/ 0); 5075 ctl_done((union ctl_io *)ctsio); 5076 return (CTL_RETVAL_COMPLETE); 5077 5078 } 5079 5080 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5081 ctl_set_invalid_field(ctsio, 5082 /*sks_valid*/ 1, 5083 /*command*/ 1, 5084 /*field*/ 1, 5085 /*bit_valid*/ 1, 5086 /*bit*/ 4); 5087 ctl_done((union ctl_io *)ctsio); 5088 return (CTL_RETVAL_COMPLETE); 5089 } 5090 5091 if (cdb->byte2 & SR10_LONGID) 5092 longid = 1; 5093 else 5094 thirdparty_id = cdb->thirdparty_id; 5095 5096 resv_id = cdb->resv_id; 5097 length = scsi_2btoul(cdb->length); 5098 break; 5099 } 5100 } 5101 5102 5103 /* 5104 * XXX KDM right now, we only support LUN reservation. We don't 5105 * support 3rd party reservations, or extent reservations, which 5106 * might actually need the parameter list. If we've gotten this 5107 * far, we've got a LUN reservation. Anything else got kicked out 5108 * above. So, according to SPC, ignore the length. 5109 */ 5110 length = 0; 5111 5112 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5113 && (length > 0)) { 5114 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5115 ctsio->kern_data_len = length; 5116 ctsio->kern_total_len = length; 5117 ctsio->kern_data_resid = 0; 5118 ctsio->kern_rel_offset = 0; 5119 ctsio->kern_sg_entries = 0; 5120 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5121 ctsio->be_move_done = ctl_config_move_done; 5122 ctl_datamove((union ctl_io *)ctsio); 5123 5124 return (CTL_RETVAL_COMPLETE); 5125 } 5126 5127 if (length > 0) 5128 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5129 5130 mtx_lock(&ctl_softc->ctl_lock); 5131 5132 /* 5133 * According to SPC, it is not an error for an intiator to attempt 5134 * to release a reservation on a LUN that isn't reserved, or that 5135 * is reserved by another initiator. The reservation can only be 5136 * released, though, by the initiator who made it or by one of 5137 * several reset type events. 5138 */ 5139 if (lun->flags & CTL_LUN_RESERVED) { 5140 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5141 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5142 && (ctsio->io_hdr.nexus.targ_target.id == 5143 lun->rsv_nexus.targ_target.id)) { 5144 lun->flags &= ~CTL_LUN_RESERVED; 5145 } 5146 } 5147 5148 ctsio->scsi_status = SCSI_STATUS_OK; 5149 ctsio->io_hdr.status = CTL_SUCCESS; 5150 5151 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5152 free(ctsio->kern_data_ptr, M_CTL); 5153 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5154 } 5155 5156 mtx_unlock(&ctl_softc->ctl_lock); 5157 5158 ctl_done((union ctl_io *)ctsio); 5159 return (CTL_RETVAL_COMPLETE); 5160} 5161 5162int 5163ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5164{ 5165 int extent, thirdparty, longid; 5166 int resv_id, length; 5167 uint64_t thirdparty_id; 5168 struct ctl_softc *ctl_softc; 5169 struct ctl_lun *lun; 5170 5171 extent = 0; 5172 thirdparty = 0; 5173 longid = 0; 5174 resv_id = 0; 5175 length = 0; 5176 thirdparty_id = 0; 5177 5178 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5179 5180 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5181 ctl_softc = control_softc; 5182 5183 switch (ctsio->cdb[0]) { 5184 case RESERVE: { 5185 struct scsi_reserve *cdb; 5186 5187 cdb = (struct scsi_reserve *)ctsio->cdb; 5188 if ((cdb->byte2 & 0x1f) != 0) { 5189 ctl_set_invalid_field(ctsio, 5190 /*sks_valid*/ 1, 5191 /*command*/ 1, 5192 /*field*/ 1, 5193 /*bit_valid*/ 0, 5194 /*bit*/ 0); 5195 ctl_done((union ctl_io *)ctsio); 5196 return (CTL_RETVAL_COMPLETE); 5197 } 5198 resv_id = cdb->resv_id; 5199 length = scsi_2btoul(cdb->length); 5200 break; 5201 } 5202 case RESERVE_10: { 5203 struct scsi_reserve_10 *cdb; 5204 5205 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5206 5207 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5208 ctl_set_invalid_field(ctsio, 5209 /*sks_valid*/ 1, 5210 /*command*/ 1, 5211 /*field*/ 1, 5212 /*bit_valid*/ 1, 5213 /*bit*/ 0); 5214 ctl_done((union ctl_io *)ctsio); 5215 return (CTL_RETVAL_COMPLETE); 5216 } 5217 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5218 ctl_set_invalid_field(ctsio, 5219 /*sks_valid*/ 1, 5220 /*command*/ 1, 5221 /*field*/ 1, 5222 /*bit_valid*/ 1, 5223 /*bit*/ 4); 5224 ctl_done((union ctl_io *)ctsio); 5225 return (CTL_RETVAL_COMPLETE); 5226 } 5227 if (cdb->byte2 & SR10_LONGID) 5228 longid = 1; 5229 else 5230 thirdparty_id = cdb->thirdparty_id; 5231 5232 resv_id = cdb->resv_id; 5233 length = scsi_2btoul(cdb->length); 5234 break; 5235 } 5236 } 5237 5238 /* 5239 * XXX KDM right now, we only support LUN reservation. We don't 5240 * support 3rd party reservations, or extent reservations, which 5241 * might actually need the parameter list. If we've gotten this 5242 * far, we've got a LUN reservation. Anything else got kicked out 5243 * above. So, according to SPC, ignore the length. 5244 */ 5245 length = 0; 5246 5247 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5248 && (length > 0)) { 5249 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5250 ctsio->kern_data_len = length; 5251 ctsio->kern_total_len = length; 5252 ctsio->kern_data_resid = 0; 5253 ctsio->kern_rel_offset = 0; 5254 ctsio->kern_sg_entries = 0; 5255 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5256 ctsio->be_move_done = ctl_config_move_done; 5257 ctl_datamove((union ctl_io *)ctsio); 5258 5259 return (CTL_RETVAL_COMPLETE); 5260 } 5261 5262 if (length > 0) 5263 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5264 5265 mtx_lock(&ctl_softc->ctl_lock); 5266 if (lun->flags & CTL_LUN_RESERVED) { 5267 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5268 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5269 || (ctsio->io_hdr.nexus.targ_target.id != 5270 lun->rsv_nexus.targ_target.id)) { 5271 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5272 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5273 goto bailout; 5274 } 5275 } 5276 5277 lun->flags |= CTL_LUN_RESERVED; 5278 lun->rsv_nexus = ctsio->io_hdr.nexus; 5279 5280 ctsio->scsi_status = SCSI_STATUS_OK; 5281 ctsio->io_hdr.status = CTL_SUCCESS; 5282 5283bailout: 5284 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5285 free(ctsio->kern_data_ptr, M_CTL); 5286 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5287 } 5288 5289 mtx_unlock(&ctl_softc->ctl_lock); 5290 5291 ctl_done((union ctl_io *)ctsio); 5292 return (CTL_RETVAL_COMPLETE); 5293} 5294 5295int 5296ctl_start_stop(struct ctl_scsiio *ctsio) 5297{ 5298 struct scsi_start_stop_unit *cdb; 5299 struct ctl_lun *lun; 5300 struct ctl_softc *ctl_softc; 5301 int retval; 5302 5303 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5304 5305 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5306 ctl_softc = control_softc; 5307 retval = 0; 5308 5309 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5310 5311 /* 5312 * XXX KDM 5313 * We don't support the immediate bit on a stop unit. In order to 5314 * do that, we would need to code up a way to know that a stop is 5315 * pending, and hold off any new commands until it completes, one 5316 * way or another. Then we could accept or reject those commands 5317 * depending on its status. We would almost need to do the reverse 5318 * of what we do below for an immediate start -- return the copy of 5319 * the ctl_io to the FETD with status to send to the host (and to 5320 * free the copy!) and then free the original I/O once the stop 5321 * actually completes. That way, the OOA queue mechanism can work 5322 * to block commands that shouldn't proceed. Another alternative 5323 * would be to put the copy in the queue in place of the original, 5324 * and return the original back to the caller. That could be 5325 * slightly safer.. 5326 */ 5327 if ((cdb->byte2 & SSS_IMMED) 5328 && ((cdb->how & SSS_START) == 0)) { 5329 ctl_set_invalid_field(ctsio, 5330 /*sks_valid*/ 1, 5331 /*command*/ 1, 5332 /*field*/ 1, 5333 /*bit_valid*/ 1, 5334 /*bit*/ 0); 5335 ctl_done((union ctl_io *)ctsio); 5336 return (CTL_RETVAL_COMPLETE); 5337 } 5338 5339 /* 5340 * We don't support the power conditions field. We need to check 5341 * this prior to checking the load/eject and start/stop bits. 5342 */ 5343 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5344 ctl_set_invalid_field(ctsio, 5345 /*sks_valid*/ 1, 5346 /*command*/ 1, 5347 /*field*/ 4, 5348 /*bit_valid*/ 1, 5349 /*bit*/ 4); 5350 ctl_done((union ctl_io *)ctsio); 5351 return (CTL_RETVAL_COMPLETE); 5352 } 5353 5354 /* 5355 * Media isn't removable, so we can't load or eject it. 5356 */ 5357 if ((cdb->how & SSS_LOEJ) != 0) { 5358 ctl_set_invalid_field(ctsio, 5359 /*sks_valid*/ 1, 5360 /*command*/ 1, 5361 /*field*/ 4, 5362 /*bit_valid*/ 1, 5363 /*bit*/ 1); 5364 ctl_done((union ctl_io *)ctsio); 5365 return (CTL_RETVAL_COMPLETE); 5366 } 5367 5368 if ((lun->flags & CTL_LUN_PR_RESERVED) 5369 && ((cdb->how & SSS_START)==0)) { 5370 uint32_t residx; 5371 5372 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5373 if (!lun->per_res[residx].registered 5374 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5375 5376 ctl_set_reservation_conflict(ctsio); 5377 ctl_done((union ctl_io *)ctsio); 5378 return (CTL_RETVAL_COMPLETE); 5379 } 5380 } 5381 5382 /* 5383 * If there is no backend on this device, we can't start or stop 5384 * it. In theory we shouldn't get any start/stop commands in the 5385 * first place at this level if the LUN doesn't have a backend. 5386 * That should get stopped by the command decode code. 5387 */ 5388 if (lun->backend == NULL) { 5389 ctl_set_invalid_opcode(ctsio); 5390 ctl_done((union ctl_io *)ctsio); 5391 return (CTL_RETVAL_COMPLETE); 5392 } 5393 5394 /* 5395 * XXX KDM Copan-specific offline behavior. 5396 * Figure out a reasonable way to port this? 5397 */ 5398#ifdef NEEDTOPORT 5399 mtx_lock(&ctl_softc->ctl_lock); 5400 5401 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5402 && (lun->flags & CTL_LUN_OFFLINE)) { 5403 /* 5404 * If the LUN is offline, and the on/offline bit isn't set, 5405 * reject the start or stop. Otherwise, let it through. 5406 */ 5407 mtx_unlock(&ctl_softc->ctl_lock); 5408 ctl_set_lun_not_ready(ctsio); 5409 ctl_done((union ctl_io *)ctsio); 5410 } else { 5411 mtx_unlock(&ctl_softc->ctl_lock); 5412#endif /* NEEDTOPORT */ 5413 /* 5414 * This could be a start or a stop when we're online, 5415 * or a stop/offline or start/online. A start or stop when 5416 * we're offline is covered in the case above. 5417 */ 5418 /* 5419 * In the non-immediate case, we send the request to 5420 * the backend and return status to the user when 5421 * it is done. 5422 * 5423 * In the immediate case, we allocate a new ctl_io 5424 * to hold a copy of the request, and send that to 5425 * the backend. We then set good status on the 5426 * user's request and return it immediately. 5427 */ 5428 if (cdb->byte2 & SSS_IMMED) { 5429 union ctl_io *new_io; 5430 5431 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5432 if (new_io == NULL) { 5433 ctl_set_busy(ctsio); 5434 ctl_done((union ctl_io *)ctsio); 5435 } else { 5436 ctl_copy_io((union ctl_io *)ctsio, 5437 new_io); 5438 retval = lun->backend->config_write(new_io); 5439 ctl_set_success(ctsio); 5440 ctl_done((union ctl_io *)ctsio); 5441 } 5442 } else { 5443 retval = lun->backend->config_write( 5444 (union ctl_io *)ctsio); 5445 } 5446#ifdef NEEDTOPORT 5447 } 5448#endif 5449 return (retval); 5450} 5451 5452/* 5453 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5454 * we don't really do anything with the LBA and length fields if the user 5455 * passes them in. Instead we'll just flush out the cache for the entire 5456 * LUN. 5457 */ 5458int 5459ctl_sync_cache(struct ctl_scsiio *ctsio) 5460{ 5461 struct ctl_lun *lun; 5462 struct ctl_softc *ctl_softc; 5463 uint64_t starting_lba; 5464 uint32_t block_count; 5465 int reladr, immed; 5466 int retval; 5467 5468 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5469 5470 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5471 ctl_softc = control_softc; 5472 retval = 0; 5473 reladr = 0; 5474 immed = 0; 5475 5476 switch (ctsio->cdb[0]) { 5477 case SYNCHRONIZE_CACHE: { 5478 struct scsi_sync_cache *cdb; 5479 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5480 5481 if (cdb->byte2 & SSC_RELADR) 5482 reladr = 1; 5483 5484 if (cdb->byte2 & SSC_IMMED) 5485 immed = 1; 5486 5487 starting_lba = scsi_4btoul(cdb->begin_lba); 5488 block_count = scsi_2btoul(cdb->lb_count); 5489 break; 5490 } 5491 case SYNCHRONIZE_CACHE_16: { 5492 struct scsi_sync_cache_16 *cdb; 5493 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5494 5495 if (cdb->byte2 & SSC_RELADR) 5496 reladr = 1; 5497 5498 if (cdb->byte2 & SSC_IMMED) 5499 immed = 1; 5500 5501 starting_lba = scsi_8btou64(cdb->begin_lba); 5502 block_count = scsi_4btoul(cdb->lb_count); 5503 break; 5504 } 5505 default: 5506 ctl_set_invalid_opcode(ctsio); 5507 ctl_done((union ctl_io *)ctsio); 5508 goto bailout; 5509 break; /* NOTREACHED */ 5510 } 5511 5512 if (immed) { 5513 /* 5514 * We don't support the immediate bit. Since it's in the 5515 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5516 * commands, we can just return the same error in either 5517 * case. 5518 */ 5519 ctl_set_invalid_field(ctsio, 5520 /*sks_valid*/ 1, 5521 /*command*/ 1, 5522 /*field*/ 1, 5523 /*bit_valid*/ 1, 5524 /*bit*/ 1); 5525 ctl_done((union ctl_io *)ctsio); 5526 goto bailout; 5527 } 5528 5529 if (reladr) { 5530 /* 5531 * We don't support the reladr bit either. It can only be 5532 * used with linked commands, and we don't support linked 5533 * commands. Since the bit is in the same place for the 5534 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5535 * just return the same error in either case. 5536 */ 5537 ctl_set_invalid_field(ctsio, 5538 /*sks_valid*/ 1, 5539 /*command*/ 1, 5540 /*field*/ 1, 5541 /*bit_valid*/ 1, 5542 /*bit*/ 0); 5543 ctl_done((union ctl_io *)ctsio); 5544 goto bailout; 5545 } 5546 5547 /* 5548 * We check the LBA and length, but don't do anything with them. 5549 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5550 * get flushed. This check will just help satisfy anyone who wants 5551 * to see an error for an out of range LBA. 5552 */ 5553 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5554 ctl_set_lba_out_of_range(ctsio); 5555 ctl_done((union ctl_io *)ctsio); 5556 goto bailout; 5557 } 5558 5559 /* 5560 * If this LUN has no backend, we can't flush the cache anyway. 5561 */ 5562 if (lun->backend == NULL) { 5563 ctl_set_invalid_opcode(ctsio); 5564 ctl_done((union ctl_io *)ctsio); 5565 goto bailout; 5566 } 5567 5568 /* 5569 * Check to see whether we're configured to send the SYNCHRONIZE 5570 * CACHE command directly to the back end. 5571 */ 5572 mtx_lock(&ctl_softc->ctl_lock); 5573 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5574 && (++(lun->sync_count) >= lun->sync_interval)) { 5575 lun->sync_count = 0; 5576 mtx_unlock(&ctl_softc->ctl_lock); 5577 retval = lun->backend->config_write((union ctl_io *)ctsio); 5578 } else { 5579 mtx_unlock(&ctl_softc->ctl_lock); 5580 ctl_set_success(ctsio); 5581 ctl_done((union ctl_io *)ctsio); 5582 } 5583 5584bailout: 5585 5586 return (retval); 5587} 5588 5589int 5590ctl_format(struct ctl_scsiio *ctsio) 5591{ 5592 struct scsi_format *cdb; 5593 struct ctl_lun *lun; 5594 struct ctl_softc *ctl_softc; 5595 int length, defect_list_len; 5596 5597 CTL_DEBUG_PRINT(("ctl_format\n")); 5598 5599 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5600 ctl_softc = control_softc; 5601 5602 cdb = (struct scsi_format *)ctsio->cdb; 5603 5604 length = 0; 5605 if (cdb->byte2 & SF_FMTDATA) { 5606 if (cdb->byte2 & SF_LONGLIST) 5607 length = sizeof(struct scsi_format_header_long); 5608 else 5609 length = sizeof(struct scsi_format_header_short); 5610 } 5611 5612 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5613 && (length > 0)) { 5614 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5615 ctsio->kern_data_len = length; 5616 ctsio->kern_total_len = length; 5617 ctsio->kern_data_resid = 0; 5618 ctsio->kern_rel_offset = 0; 5619 ctsio->kern_sg_entries = 0; 5620 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5621 ctsio->be_move_done = ctl_config_move_done; 5622 ctl_datamove((union ctl_io *)ctsio); 5623 5624 return (CTL_RETVAL_COMPLETE); 5625 } 5626 5627 defect_list_len = 0; 5628 5629 if (cdb->byte2 & SF_FMTDATA) { 5630 if (cdb->byte2 & SF_LONGLIST) { 5631 struct scsi_format_header_long *header; 5632 5633 header = (struct scsi_format_header_long *) 5634 ctsio->kern_data_ptr; 5635 5636 defect_list_len = scsi_4btoul(header->defect_list_len); 5637 if (defect_list_len != 0) { 5638 ctl_set_invalid_field(ctsio, 5639 /*sks_valid*/ 1, 5640 /*command*/ 0, 5641 /*field*/ 2, 5642 /*bit_valid*/ 0, 5643 /*bit*/ 0); 5644 goto bailout; 5645 } 5646 } else { 5647 struct scsi_format_header_short *header; 5648 5649 header = (struct scsi_format_header_short *) 5650 ctsio->kern_data_ptr; 5651 5652 defect_list_len = scsi_2btoul(header->defect_list_len); 5653 if (defect_list_len != 0) { 5654 ctl_set_invalid_field(ctsio, 5655 /*sks_valid*/ 1, 5656 /*command*/ 0, 5657 /*field*/ 2, 5658 /*bit_valid*/ 0, 5659 /*bit*/ 0); 5660 goto bailout; 5661 } 5662 } 5663 } 5664 5665 /* 5666 * The format command will clear out the "Medium format corrupted" 5667 * status if set by the configuration code. That status is really 5668 * just a way to notify the host that we have lost the media, and 5669 * get them to issue a command that will basically make them think 5670 * they're blowing away the media. 5671 */ 5672 mtx_lock(&ctl_softc->ctl_lock); 5673 lun->flags &= ~CTL_LUN_INOPERABLE; 5674 mtx_unlock(&ctl_softc->ctl_lock); 5675 5676 ctsio->scsi_status = SCSI_STATUS_OK; 5677 ctsio->io_hdr.status = CTL_SUCCESS; 5678bailout: 5679 5680 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5681 free(ctsio->kern_data_ptr, M_CTL); 5682 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5683 } 5684 5685 ctl_done((union ctl_io *)ctsio); 5686 return (CTL_RETVAL_COMPLETE); 5687} 5688 5689int 5690ctl_write_buffer(struct ctl_scsiio *ctsio) 5691{ 5692 struct scsi_write_buffer *cdb; 5693 struct copan_page_header *header; 5694 struct ctl_lun *lun; 5695 struct ctl_softc *ctl_softc; 5696 int buffer_offset, len; 5697 int retval; 5698 5699 header = NULL; 5700 5701 retval = CTL_RETVAL_COMPLETE; 5702 5703 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5704 5705 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5706 ctl_softc = control_softc; 5707 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5708 5709 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5710 ctl_set_invalid_field(ctsio, 5711 /*sks_valid*/ 1, 5712 /*command*/ 1, 5713 /*field*/ 1, 5714 /*bit_valid*/ 1, 5715 /*bit*/ 4); 5716 ctl_done((union ctl_io *)ctsio); 5717 return (CTL_RETVAL_COMPLETE); 5718 } 5719 if (cdb->buffer_id != 0) { 5720 ctl_set_invalid_field(ctsio, 5721 /*sks_valid*/ 1, 5722 /*command*/ 1, 5723 /*field*/ 2, 5724 /*bit_valid*/ 0, 5725 /*bit*/ 0); 5726 ctl_done((union ctl_io *)ctsio); 5727 return (CTL_RETVAL_COMPLETE); 5728 } 5729 5730 len = scsi_3btoul(cdb->length); 5731 buffer_offset = scsi_3btoul(cdb->offset); 5732 5733 if (len > sizeof(lun->write_buffer)) { 5734 ctl_set_invalid_field(ctsio, 5735 /*sks_valid*/ 1, 5736 /*command*/ 1, 5737 /*field*/ 6, 5738 /*bit_valid*/ 0, 5739 /*bit*/ 0); 5740 ctl_done((union ctl_io *)ctsio); 5741 return (CTL_RETVAL_COMPLETE); 5742 } 5743 5744 if (buffer_offset != 0) { 5745 ctl_set_invalid_field(ctsio, 5746 /*sks_valid*/ 1, 5747 /*command*/ 1, 5748 /*field*/ 3, 5749 /*bit_valid*/ 0, 5750 /*bit*/ 0); 5751 ctl_done((union ctl_io *)ctsio); 5752 return (CTL_RETVAL_COMPLETE); 5753 } 5754 5755 /* 5756 * If we've got a kernel request that hasn't been malloced yet, 5757 * malloc it and tell the caller the data buffer is here. 5758 */ 5759 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5760 ctsio->kern_data_ptr = lun->write_buffer; 5761 ctsio->kern_data_len = len; 5762 ctsio->kern_total_len = len; 5763 ctsio->kern_data_resid = 0; 5764 ctsio->kern_rel_offset = 0; 5765 ctsio->kern_sg_entries = 0; 5766 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5767 ctsio->be_move_done = ctl_config_move_done; 5768 ctl_datamove((union ctl_io *)ctsio); 5769 5770 return (CTL_RETVAL_COMPLETE); 5771 } 5772 5773 ctl_done((union ctl_io *)ctsio); 5774 5775 return (CTL_RETVAL_COMPLETE); 5776} 5777 5778int 5779ctl_write_same(struct ctl_scsiio *ctsio) 5780{ 5781 struct ctl_lun *lun; 5782 struct ctl_lba_len_flags lbalen; 5783 uint64_t lba; 5784 uint32_t num_blocks; 5785 int len, retval; 5786 uint8_t byte2; 5787 5788 retval = CTL_RETVAL_COMPLETE; 5789 5790 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5791 5792 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5793 5794 switch (ctsio->cdb[0]) { 5795 case WRITE_SAME_10: { 5796 struct scsi_write_same_10 *cdb; 5797 5798 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5799 5800 lba = scsi_4btoul(cdb->addr); 5801 num_blocks = scsi_2btoul(cdb->length); 5802 byte2 = cdb->byte2; 5803 break; 5804 } 5805 case WRITE_SAME_16: { 5806 struct scsi_write_same_16 *cdb; 5807 5808 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5809 5810 lba = scsi_8btou64(cdb->addr); 5811 num_blocks = scsi_4btoul(cdb->length); 5812 byte2 = cdb->byte2; 5813 break; 5814 } 5815 default: 5816 /* 5817 * We got a command we don't support. This shouldn't 5818 * happen, commands should be filtered out above us. 5819 */ 5820 ctl_set_invalid_opcode(ctsio); 5821 ctl_done((union ctl_io *)ctsio); 5822 5823 return (CTL_RETVAL_COMPLETE); 5824 break; /* NOTREACHED */ 5825 } 5826 5827 /* 5828 * The first check is to make sure we're in bounds, the second 5829 * check is to catch wrap-around problems. If the lba + num blocks 5830 * is less than the lba, then we've wrapped around and the block 5831 * range is invalid anyway. 5832 */ 5833 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5834 || ((lba + num_blocks) < lba)) { 5835 ctl_set_lba_out_of_range(ctsio); 5836 ctl_done((union ctl_io *)ctsio); 5837 return (CTL_RETVAL_COMPLETE); 5838 } 5839 5840 /* Zero number of blocks means "to the last logical block" */ 5841 if (num_blocks == 0) { 5842 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5843 ctl_set_invalid_field(ctsio, 5844 /*sks_valid*/ 0, 5845 /*command*/ 1, 5846 /*field*/ 0, 5847 /*bit_valid*/ 0, 5848 /*bit*/ 0); 5849 ctl_done((union ctl_io *)ctsio); 5850 return (CTL_RETVAL_COMPLETE); 5851 } 5852 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5853 } 5854 5855 len = lun->be_lun->blocksize; 5856 5857 /* 5858 * If we've got a kernel request that hasn't been malloced yet, 5859 * malloc it and tell the caller the data buffer is here. 5860 */ 5861 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5862 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5863 ctsio->kern_data_len = len; 5864 ctsio->kern_total_len = len; 5865 ctsio->kern_data_resid = 0; 5866 ctsio->kern_rel_offset = 0; 5867 ctsio->kern_sg_entries = 0; 5868 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5869 ctsio->be_move_done = ctl_config_move_done; 5870 ctl_datamove((union ctl_io *)ctsio); 5871 5872 return (CTL_RETVAL_COMPLETE); 5873 } 5874 5875 lbalen.lba = lba; 5876 lbalen.len = num_blocks; 5877 lbalen.flags = byte2; 5878 memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &lbalen, 5879 sizeof(lbalen)); 5880 retval = lun->backend->config_write((union ctl_io *)ctsio); 5881 5882 return (retval); 5883} 5884 5885int 5886ctl_unmap(struct ctl_scsiio *ctsio) 5887{ 5888 struct ctl_lun *lun; 5889 struct scsi_unmap *cdb; 5890 struct ctl_ptr_len_flags ptrlen; 5891 struct scsi_unmap_header *hdr; 5892 struct scsi_unmap_desc *buf, *end; 5893 uint64_t lba; 5894 uint32_t num_blocks; 5895 int len, retval; 5896 uint8_t byte2; 5897 5898 retval = CTL_RETVAL_COMPLETE; 5899 5900 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5901 5902 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5903 cdb = (struct scsi_unmap *)ctsio->cdb; 5904 5905 len = scsi_2btoul(cdb->length); 5906 byte2 = cdb->byte2; 5907 5908 /* 5909 * If we've got a kernel request that hasn't been malloced yet, 5910 * malloc it and tell the caller the data buffer is here. 5911 */ 5912 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5913 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5914 ctsio->kern_data_len = len; 5915 ctsio->kern_total_len = len; 5916 ctsio->kern_data_resid = 0; 5917 ctsio->kern_rel_offset = 0; 5918 ctsio->kern_sg_entries = 0; 5919 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5920 ctsio->be_move_done = ctl_config_move_done; 5921 ctl_datamove((union ctl_io *)ctsio); 5922 5923 return (CTL_RETVAL_COMPLETE); 5924 } 5925 5926 len = ctsio->kern_total_len - ctsio->kern_data_resid; 5927 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 5928 if (len < sizeof (*hdr) || 5929 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 5930 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 5931 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 5932 ctl_set_invalid_field(ctsio, 5933 /*sks_valid*/ 0, 5934 /*command*/ 0, 5935 /*field*/ 0, 5936 /*bit_valid*/ 0, 5937 /*bit*/ 0); 5938 ctl_done((union ctl_io *)ctsio); 5939 return (CTL_RETVAL_COMPLETE); 5940 } 5941 len = scsi_2btoul(hdr->desc_length); 5942 buf = (struct scsi_unmap_desc *)(hdr + 1); 5943 end = buf + len / sizeof(*buf); 5944 5945 ptrlen.ptr = (void *)buf; 5946 ptrlen.len = len; 5947 ptrlen.flags = byte2; 5948 memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &ptrlen, 5949 sizeof(ptrlen)); 5950 5951 for (; buf < end; buf++) { 5952 lba = scsi_8btou64(buf->lba); 5953 num_blocks = scsi_4btoul(buf->length); 5954 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5955 || ((lba + num_blocks) < lba)) { 5956 ctl_set_lba_out_of_range(ctsio); 5957 ctl_done((union ctl_io *)ctsio); 5958 return (CTL_RETVAL_COMPLETE); 5959 } 5960 } 5961 5962 retval = lun->backend->config_write((union ctl_io *)ctsio); 5963 5964 return (retval); 5965} 5966 5967/* 5968 * Note that this function currently doesn't actually do anything inside 5969 * CTL to enforce things if the DQue bit is turned on. 5970 * 5971 * Also note that this function can't be used in the default case, because 5972 * the DQue bit isn't set in the changeable mask for the control mode page 5973 * anyway. This is just here as an example for how to implement a page 5974 * handler, and a placeholder in case we want to allow the user to turn 5975 * tagged queueing on and off. 5976 * 5977 * The D_SENSE bit handling is functional, however, and will turn 5978 * descriptor sense on and off for a given LUN. 5979 */ 5980int 5981ctl_control_page_handler(struct ctl_scsiio *ctsio, 5982 struct ctl_page_index *page_index, uint8_t *page_ptr) 5983{ 5984 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5985 struct ctl_lun *lun; 5986 struct ctl_softc *softc; 5987 int set_ua; 5988 uint32_t initidx; 5989 5990 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5991 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5992 set_ua = 0; 5993 5994 user_cp = (struct scsi_control_page *)page_ptr; 5995 current_cp = (struct scsi_control_page *) 5996 (page_index->page_data + (page_index->page_len * 5997 CTL_PAGE_CURRENT)); 5998 saved_cp = (struct scsi_control_page *) 5999 (page_index->page_data + (page_index->page_len * 6000 CTL_PAGE_SAVED)); 6001 6002 softc = control_softc; 6003 6004 mtx_lock(&softc->ctl_lock); 6005 if (((current_cp->rlec & SCP_DSENSE) == 0) 6006 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 6007 /* 6008 * Descriptor sense is currently turned off and the user 6009 * wants to turn it on. 6010 */ 6011 current_cp->rlec |= SCP_DSENSE; 6012 saved_cp->rlec |= SCP_DSENSE; 6013 lun->flags |= CTL_LUN_SENSE_DESC; 6014 set_ua = 1; 6015 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 6016 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 6017 /* 6018 * Descriptor sense is currently turned on, and the user 6019 * wants to turn it off. 6020 */ 6021 current_cp->rlec &= ~SCP_DSENSE; 6022 saved_cp->rlec &= ~SCP_DSENSE; 6023 lun->flags &= ~CTL_LUN_SENSE_DESC; 6024 set_ua = 1; 6025 } 6026 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 6027 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6028#ifdef NEEDTOPORT 6029 csevent_log(CSC_CTL | CSC_SHELF_SW | 6030 CTL_UNTAG_TO_UNTAG, 6031 csevent_LogType_Trace, 6032 csevent_Severity_Information, 6033 csevent_AlertLevel_Green, 6034 csevent_FRU_Firmware, 6035 csevent_FRU_Unknown, 6036 "Received untagged to untagged transition"); 6037#endif /* NEEDTOPORT */ 6038 } else { 6039#ifdef NEEDTOPORT 6040 csevent_log(CSC_CTL | CSC_SHELF_SW | 6041 CTL_UNTAG_TO_TAG, 6042 csevent_LogType_ConfigChange, 6043 csevent_Severity_Information, 6044 csevent_AlertLevel_Green, 6045 csevent_FRU_Firmware, 6046 csevent_FRU_Unknown, 6047 "Received untagged to tagged " 6048 "queueing transition"); 6049#endif /* NEEDTOPORT */ 6050 6051 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6052 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6053 set_ua = 1; 6054 } 6055 } else { 6056 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6057#ifdef NEEDTOPORT 6058 csevent_log(CSC_CTL | CSC_SHELF_SW | 6059 CTL_TAG_TO_UNTAG, 6060 csevent_LogType_ConfigChange, 6061 csevent_Severity_Warning, 6062 csevent_AlertLevel_Yellow, 6063 csevent_FRU_Firmware, 6064 csevent_FRU_Unknown, 6065 "Received tagged queueing to untagged " 6066 "transition"); 6067#endif /* NEEDTOPORT */ 6068 6069 current_cp->queue_flags |= SCP_QUEUE_DQUE; 6070 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 6071 set_ua = 1; 6072 } else { 6073#ifdef NEEDTOPORT 6074 csevent_log(CSC_CTL | CSC_SHELF_SW | 6075 CTL_TAG_TO_TAG, 6076 csevent_LogType_Trace, 6077 csevent_Severity_Information, 6078 csevent_AlertLevel_Green, 6079 csevent_FRU_Firmware, 6080 csevent_FRU_Unknown, 6081 "Received tagged queueing to tagged " 6082 "queueing transition"); 6083#endif /* NEEDTOPORT */ 6084 } 6085 } 6086 if (set_ua != 0) { 6087 int i; 6088 /* 6089 * Let other initiators know that the mode 6090 * parameters for this LUN have changed. 6091 */ 6092 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6093 if (i == initidx) 6094 continue; 6095 6096 lun->pending_sense[i].ua_pending |= 6097 CTL_UA_MODE_CHANGE; 6098 } 6099 } 6100 mtx_unlock(&softc->ctl_lock); 6101 6102 return (0); 6103} 6104 6105int 6106ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6107 struct ctl_page_index *page_index, uint8_t *page_ptr) 6108{ 6109 return (0); 6110} 6111 6112int 6113ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6114 struct ctl_page_index *page_index, int pc) 6115{ 6116 struct copan_power_subpage *page; 6117 6118 page = (struct copan_power_subpage *)page_index->page_data + 6119 (page_index->page_len * pc); 6120 6121 switch (pc) { 6122 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6123 /* 6124 * We don't update the changable bits for this page. 6125 */ 6126 break; 6127 case SMS_PAGE_CTRL_CURRENT >> 6: 6128 case SMS_PAGE_CTRL_DEFAULT >> 6: 6129 case SMS_PAGE_CTRL_SAVED >> 6: 6130#ifdef NEEDTOPORT 6131 ctl_update_power_subpage(page); 6132#endif 6133 break; 6134 default: 6135#ifdef NEEDTOPORT 6136 EPRINT(0, "Invalid PC %d!!", pc); 6137#endif 6138 break; 6139 } 6140 return (0); 6141} 6142 6143 6144int 6145ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6146 struct ctl_page_index *page_index, uint8_t *page_ptr) 6147{ 6148 struct copan_aps_subpage *user_sp; 6149 struct copan_aps_subpage *current_sp; 6150 union ctl_modepage_info *modepage_info; 6151 struct ctl_softc *softc; 6152 struct ctl_lun *lun; 6153 int retval; 6154 6155 retval = CTL_RETVAL_COMPLETE; 6156 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6157 (page_index->page_len * CTL_PAGE_CURRENT)); 6158 softc = control_softc; 6159 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6160 6161 user_sp = (struct copan_aps_subpage *)page_ptr; 6162 6163 modepage_info = (union ctl_modepage_info *) 6164 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6165 6166 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6167 modepage_info->header.subpage = page_index->subpage; 6168 modepage_info->aps.lock_active = user_sp->lock_active; 6169 6170 mtx_lock(&softc->ctl_lock); 6171 6172 /* 6173 * If there is a request to lock the LUN and another LUN is locked 6174 * this is an error. If the requested LUN is already locked ignore 6175 * the request. If no LUN is locked attempt to lock it. 6176 * if there is a request to unlock the LUN and the LUN is currently 6177 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6178 * if another LUN is locked or no LUN is locked. 6179 */ 6180 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6181 if (softc->aps_locked_lun == lun->lun) { 6182 /* 6183 * This LUN is already locked, so we're done. 6184 */ 6185 retval = CTL_RETVAL_COMPLETE; 6186 } else if (softc->aps_locked_lun == 0) { 6187 /* 6188 * No one has the lock, pass the request to the 6189 * backend. 6190 */ 6191 retval = lun->backend->config_write( 6192 (union ctl_io *)ctsio); 6193 } else { 6194 /* 6195 * Someone else has the lock, throw out the request. 6196 */ 6197 ctl_set_already_locked(ctsio); 6198 free(ctsio->kern_data_ptr, M_CTL); 6199 ctl_done((union ctl_io *)ctsio); 6200 6201 /* 6202 * Set the return value so that ctl_do_mode_select() 6203 * won't try to complete the command. We already 6204 * completed it here. 6205 */ 6206 retval = CTL_RETVAL_ERROR; 6207 } 6208 } else if (softc->aps_locked_lun == lun->lun) { 6209 /* 6210 * This LUN is locked, so pass the unlock request to the 6211 * backend. 6212 */ 6213 retval = lun->backend->config_write((union ctl_io *)ctsio); 6214 } 6215 mtx_unlock(&softc->ctl_lock); 6216 6217 return (retval); 6218} 6219 6220int 6221ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6222 struct ctl_page_index *page_index, 6223 uint8_t *page_ptr) 6224{ 6225 uint8_t *c; 6226 int i; 6227 6228 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6229 ctl_time_io_secs = 6230 (c[0] << 8) | 6231 (c[1] << 0) | 6232 0; 6233 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6234 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6235 printf("page data:"); 6236 for (i=0; i<8; i++) 6237 printf(" %.2x",page_ptr[i]); 6238 printf("\n"); 6239 return (0); 6240} 6241 6242int 6243ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6244 struct ctl_page_index *page_index, 6245 int pc) 6246{ 6247 struct copan_debugconf_subpage *page; 6248 6249 page = (struct copan_debugconf_subpage *)page_index->page_data + 6250 (page_index->page_len * pc); 6251 6252 switch (pc) { 6253 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6254 case SMS_PAGE_CTRL_DEFAULT >> 6: 6255 case SMS_PAGE_CTRL_SAVED >> 6: 6256 /* 6257 * We don't update the changable or default bits for this page. 6258 */ 6259 break; 6260 case SMS_PAGE_CTRL_CURRENT >> 6: 6261 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6262 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6263 break; 6264 default: 6265#ifdef NEEDTOPORT 6266 EPRINT(0, "Invalid PC %d!!", pc); 6267#endif /* NEEDTOPORT */ 6268 break; 6269 } 6270 return (0); 6271} 6272 6273 6274static int 6275ctl_do_mode_select(union ctl_io *io) 6276{ 6277 struct scsi_mode_page_header *page_header; 6278 struct ctl_page_index *page_index; 6279 struct ctl_scsiio *ctsio; 6280 int control_dev, page_len; 6281 int page_len_offset, page_len_size; 6282 union ctl_modepage_info *modepage_info; 6283 struct ctl_lun *lun; 6284 int *len_left, *len_used; 6285 int retval, i; 6286 6287 ctsio = &io->scsiio; 6288 page_index = NULL; 6289 page_len = 0; 6290 retval = CTL_RETVAL_COMPLETE; 6291 6292 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6293 6294 if (lun->be_lun->lun_type != T_DIRECT) 6295 control_dev = 1; 6296 else 6297 control_dev = 0; 6298 6299 modepage_info = (union ctl_modepage_info *) 6300 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6301 len_left = &modepage_info->header.len_left; 6302 len_used = &modepage_info->header.len_used; 6303 6304do_next_page: 6305 6306 page_header = (struct scsi_mode_page_header *) 6307 (ctsio->kern_data_ptr + *len_used); 6308 6309 if (*len_left == 0) { 6310 free(ctsio->kern_data_ptr, M_CTL); 6311 ctl_set_success(ctsio); 6312 ctl_done((union ctl_io *)ctsio); 6313 return (CTL_RETVAL_COMPLETE); 6314 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6315 6316 free(ctsio->kern_data_ptr, M_CTL); 6317 ctl_set_param_len_error(ctsio); 6318 ctl_done((union ctl_io *)ctsio); 6319 return (CTL_RETVAL_COMPLETE); 6320 6321 } else if ((page_header->page_code & SMPH_SPF) 6322 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6323 6324 free(ctsio->kern_data_ptr, M_CTL); 6325 ctl_set_param_len_error(ctsio); 6326 ctl_done((union ctl_io *)ctsio); 6327 return (CTL_RETVAL_COMPLETE); 6328 } 6329 6330 6331 /* 6332 * XXX KDM should we do something with the block descriptor? 6333 */ 6334 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6335 6336 if ((control_dev != 0) 6337 && (lun->mode_pages.index[i].page_flags & 6338 CTL_PAGE_FLAG_DISK_ONLY)) 6339 continue; 6340 6341 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6342 (page_header->page_code & SMPH_PC_MASK)) 6343 continue; 6344 6345 /* 6346 * If neither page has a subpage code, then we've got a 6347 * match. 6348 */ 6349 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6350 && ((page_header->page_code & SMPH_SPF) == 0)) { 6351 page_index = &lun->mode_pages.index[i]; 6352 page_len = page_header->page_length; 6353 break; 6354 } 6355 6356 /* 6357 * If both pages have subpages, then the subpage numbers 6358 * have to match. 6359 */ 6360 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6361 && (page_header->page_code & SMPH_SPF)) { 6362 struct scsi_mode_page_header_sp *sph; 6363 6364 sph = (struct scsi_mode_page_header_sp *)page_header; 6365 6366 if (lun->mode_pages.index[i].subpage == 6367 sph->subpage) { 6368 page_index = &lun->mode_pages.index[i]; 6369 page_len = scsi_2btoul(sph->page_length); 6370 break; 6371 } 6372 } 6373 } 6374 6375 /* 6376 * If we couldn't find the page, or if we don't have a mode select 6377 * handler for it, send back an error to the user. 6378 */ 6379 if ((page_index == NULL) 6380 || (page_index->select_handler == NULL)) { 6381 ctl_set_invalid_field(ctsio, 6382 /*sks_valid*/ 1, 6383 /*command*/ 0, 6384 /*field*/ *len_used, 6385 /*bit_valid*/ 0, 6386 /*bit*/ 0); 6387 free(ctsio->kern_data_ptr, M_CTL); 6388 ctl_done((union ctl_io *)ctsio); 6389 return (CTL_RETVAL_COMPLETE); 6390 } 6391 6392 if (page_index->page_code & SMPH_SPF) { 6393 page_len_offset = 2; 6394 page_len_size = 2; 6395 } else { 6396 page_len_size = 1; 6397 page_len_offset = 1; 6398 } 6399 6400 /* 6401 * If the length the initiator gives us isn't the one we specify in 6402 * the mode page header, or if they didn't specify enough data in 6403 * the CDB to avoid truncating this page, kick out the request. 6404 */ 6405 if ((page_len != (page_index->page_len - page_len_offset - 6406 page_len_size)) 6407 || (*len_left < page_index->page_len)) { 6408 6409 6410 ctl_set_invalid_field(ctsio, 6411 /*sks_valid*/ 1, 6412 /*command*/ 0, 6413 /*field*/ *len_used + page_len_offset, 6414 /*bit_valid*/ 0, 6415 /*bit*/ 0); 6416 free(ctsio->kern_data_ptr, M_CTL); 6417 ctl_done((union ctl_io *)ctsio); 6418 return (CTL_RETVAL_COMPLETE); 6419 } 6420 6421 /* 6422 * Run through the mode page, checking to make sure that the bits 6423 * the user changed are actually legal for him to change. 6424 */ 6425 for (i = 0; i < page_index->page_len; i++) { 6426 uint8_t *user_byte, *change_mask, *current_byte; 6427 int bad_bit; 6428 int j; 6429 6430 user_byte = (uint8_t *)page_header + i; 6431 change_mask = page_index->page_data + 6432 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6433 current_byte = page_index->page_data + 6434 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6435 6436 /* 6437 * Check to see whether the user set any bits in this byte 6438 * that he is not allowed to set. 6439 */ 6440 if ((*user_byte & ~(*change_mask)) == 6441 (*current_byte & ~(*change_mask))) 6442 continue; 6443 6444 /* 6445 * Go through bit by bit to determine which one is illegal. 6446 */ 6447 bad_bit = 0; 6448 for (j = 7; j >= 0; j--) { 6449 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6450 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6451 bad_bit = i; 6452 break; 6453 } 6454 } 6455 ctl_set_invalid_field(ctsio, 6456 /*sks_valid*/ 1, 6457 /*command*/ 0, 6458 /*field*/ *len_used + i, 6459 /*bit_valid*/ 1, 6460 /*bit*/ bad_bit); 6461 free(ctsio->kern_data_ptr, M_CTL); 6462 ctl_done((union ctl_io *)ctsio); 6463 return (CTL_RETVAL_COMPLETE); 6464 } 6465 6466 /* 6467 * Decrement these before we call the page handler, since we may 6468 * end up getting called back one way or another before the handler 6469 * returns to this context. 6470 */ 6471 *len_left -= page_index->page_len; 6472 *len_used += page_index->page_len; 6473 6474 retval = page_index->select_handler(ctsio, page_index, 6475 (uint8_t *)page_header); 6476 6477 /* 6478 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6479 * wait until this queued command completes to finish processing 6480 * the mode page. If it returns anything other than 6481 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6482 * already set the sense information, freed the data pointer, and 6483 * completed the io for us. 6484 */ 6485 if (retval != CTL_RETVAL_COMPLETE) 6486 goto bailout_no_done; 6487 6488 /* 6489 * If the initiator sent us more than one page, parse the next one. 6490 */ 6491 if (*len_left > 0) 6492 goto do_next_page; 6493 6494 ctl_set_success(ctsio); 6495 free(ctsio->kern_data_ptr, M_CTL); 6496 ctl_done((union ctl_io *)ctsio); 6497 6498bailout_no_done: 6499 6500 return (CTL_RETVAL_COMPLETE); 6501 6502} 6503 6504int 6505ctl_mode_select(struct ctl_scsiio *ctsio) 6506{ 6507 int param_len, pf, sp; 6508 int header_size, bd_len; 6509 int len_left, len_used; 6510 struct ctl_page_index *page_index; 6511 struct ctl_lun *lun; 6512 int control_dev, page_len; 6513 union ctl_modepage_info *modepage_info; 6514 int retval; 6515 6516 pf = 0; 6517 sp = 0; 6518 page_len = 0; 6519 len_used = 0; 6520 len_left = 0; 6521 retval = 0; 6522 bd_len = 0; 6523 page_index = NULL; 6524 6525 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6526 6527 if (lun->be_lun->lun_type != T_DIRECT) 6528 control_dev = 1; 6529 else 6530 control_dev = 0; 6531 6532 switch (ctsio->cdb[0]) { 6533 case MODE_SELECT_6: { 6534 struct scsi_mode_select_6 *cdb; 6535 6536 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6537 6538 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6539 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6540 6541 param_len = cdb->length; 6542 header_size = sizeof(struct scsi_mode_header_6); 6543 break; 6544 } 6545 case MODE_SELECT_10: { 6546 struct scsi_mode_select_10 *cdb; 6547 6548 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6549 6550 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6551 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6552 6553 param_len = scsi_2btoul(cdb->length); 6554 header_size = sizeof(struct scsi_mode_header_10); 6555 break; 6556 } 6557 default: 6558 ctl_set_invalid_opcode(ctsio); 6559 ctl_done((union ctl_io *)ctsio); 6560 return (CTL_RETVAL_COMPLETE); 6561 break; /* NOTREACHED */ 6562 } 6563 6564 /* 6565 * From SPC-3: 6566 * "A parameter list length of zero indicates that the Data-Out Buffer 6567 * shall be empty. This condition shall not be considered as an error." 6568 */ 6569 if (param_len == 0) { 6570 ctl_set_success(ctsio); 6571 ctl_done((union ctl_io *)ctsio); 6572 return (CTL_RETVAL_COMPLETE); 6573 } 6574 6575 /* 6576 * Since we'll hit this the first time through, prior to 6577 * allocation, we don't need to free a data buffer here. 6578 */ 6579 if (param_len < header_size) { 6580 ctl_set_param_len_error(ctsio); 6581 ctl_done((union ctl_io *)ctsio); 6582 return (CTL_RETVAL_COMPLETE); 6583 } 6584 6585 /* 6586 * Allocate the data buffer and grab the user's data. In theory, 6587 * we shouldn't have to sanity check the parameter list length here 6588 * because the maximum size is 64K. We should be able to malloc 6589 * that much without too many problems. 6590 */ 6591 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6592 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6593 ctsio->kern_data_len = param_len; 6594 ctsio->kern_total_len = param_len; 6595 ctsio->kern_data_resid = 0; 6596 ctsio->kern_rel_offset = 0; 6597 ctsio->kern_sg_entries = 0; 6598 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6599 ctsio->be_move_done = ctl_config_move_done; 6600 ctl_datamove((union ctl_io *)ctsio); 6601 6602 return (CTL_RETVAL_COMPLETE); 6603 } 6604 6605 switch (ctsio->cdb[0]) { 6606 case MODE_SELECT_6: { 6607 struct scsi_mode_header_6 *mh6; 6608 6609 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6610 bd_len = mh6->blk_desc_len; 6611 break; 6612 } 6613 case MODE_SELECT_10: { 6614 struct scsi_mode_header_10 *mh10; 6615 6616 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6617 bd_len = scsi_2btoul(mh10->blk_desc_len); 6618 break; 6619 } 6620 default: 6621 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6622 break; 6623 } 6624 6625 if (param_len < (header_size + bd_len)) { 6626 free(ctsio->kern_data_ptr, M_CTL); 6627 ctl_set_param_len_error(ctsio); 6628 ctl_done((union ctl_io *)ctsio); 6629 return (CTL_RETVAL_COMPLETE); 6630 } 6631 6632 /* 6633 * Set the IO_CONT flag, so that if this I/O gets passed to 6634 * ctl_config_write_done(), it'll get passed back to 6635 * ctl_do_mode_select() for further processing, or completion if 6636 * we're all done. 6637 */ 6638 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6639 ctsio->io_cont = ctl_do_mode_select; 6640 6641 modepage_info = (union ctl_modepage_info *) 6642 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6643 6644 memset(modepage_info, 0, sizeof(*modepage_info)); 6645 6646 len_left = param_len - header_size - bd_len; 6647 len_used = header_size + bd_len; 6648 6649 modepage_info->header.len_left = len_left; 6650 modepage_info->header.len_used = len_used; 6651 6652 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6653} 6654 6655int 6656ctl_mode_sense(struct ctl_scsiio *ctsio) 6657{ 6658 struct ctl_lun *lun; 6659 int pc, page_code, dbd, llba, subpage; 6660 int alloc_len, page_len, header_len, total_len; 6661 struct scsi_mode_block_descr *block_desc; 6662 struct ctl_page_index *page_index; 6663 int control_dev; 6664 6665 dbd = 0; 6666 llba = 0; 6667 block_desc = NULL; 6668 page_index = NULL; 6669 6670 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6671 6672 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6673 6674 if (lun->be_lun->lun_type != T_DIRECT) 6675 control_dev = 1; 6676 else 6677 control_dev = 0; 6678 6679 switch (ctsio->cdb[0]) { 6680 case MODE_SENSE_6: { 6681 struct scsi_mode_sense_6 *cdb; 6682 6683 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6684 6685 header_len = sizeof(struct scsi_mode_hdr_6); 6686 if (cdb->byte2 & SMS_DBD) 6687 dbd = 1; 6688 else 6689 header_len += sizeof(struct scsi_mode_block_descr); 6690 6691 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6692 page_code = cdb->page & SMS_PAGE_CODE; 6693 subpage = cdb->subpage; 6694 alloc_len = cdb->length; 6695 break; 6696 } 6697 case MODE_SENSE_10: { 6698 struct scsi_mode_sense_10 *cdb; 6699 6700 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6701 6702 header_len = sizeof(struct scsi_mode_hdr_10); 6703 6704 if (cdb->byte2 & SMS_DBD) 6705 dbd = 1; 6706 else 6707 header_len += sizeof(struct scsi_mode_block_descr); 6708 if (cdb->byte2 & SMS10_LLBAA) 6709 llba = 1; 6710 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6711 page_code = cdb->page & SMS_PAGE_CODE; 6712 subpage = cdb->subpage; 6713 alloc_len = scsi_2btoul(cdb->length); 6714 break; 6715 } 6716 default: 6717 ctl_set_invalid_opcode(ctsio); 6718 ctl_done((union ctl_io *)ctsio); 6719 return (CTL_RETVAL_COMPLETE); 6720 break; /* NOTREACHED */ 6721 } 6722 6723 /* 6724 * We have to make a first pass through to calculate the size of 6725 * the pages that match the user's query. Then we allocate enough 6726 * memory to hold it, and actually copy the data into the buffer. 6727 */ 6728 switch (page_code) { 6729 case SMS_ALL_PAGES_PAGE: { 6730 int i; 6731 6732 page_len = 0; 6733 6734 /* 6735 * At the moment, values other than 0 and 0xff here are 6736 * reserved according to SPC-3. 6737 */ 6738 if ((subpage != SMS_SUBPAGE_PAGE_0) 6739 && (subpage != SMS_SUBPAGE_ALL)) { 6740 ctl_set_invalid_field(ctsio, 6741 /*sks_valid*/ 1, 6742 /*command*/ 1, 6743 /*field*/ 3, 6744 /*bit_valid*/ 0, 6745 /*bit*/ 0); 6746 ctl_done((union ctl_io *)ctsio); 6747 return (CTL_RETVAL_COMPLETE); 6748 } 6749 6750 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6751 if ((control_dev != 0) 6752 && (lun->mode_pages.index[i].page_flags & 6753 CTL_PAGE_FLAG_DISK_ONLY)) 6754 continue; 6755 6756 /* 6757 * We don't use this subpage if the user didn't 6758 * request all subpages. 6759 */ 6760 if ((lun->mode_pages.index[i].subpage != 0) 6761 && (subpage == SMS_SUBPAGE_PAGE_0)) 6762 continue; 6763 6764#if 0 6765 printf("found page %#x len %d\n", 6766 lun->mode_pages.index[i].page_code & 6767 SMPH_PC_MASK, 6768 lun->mode_pages.index[i].page_len); 6769#endif 6770 page_len += lun->mode_pages.index[i].page_len; 6771 } 6772 break; 6773 } 6774 default: { 6775 int i; 6776 6777 page_len = 0; 6778 6779 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6780 /* Look for the right page code */ 6781 if ((lun->mode_pages.index[i].page_code & 6782 SMPH_PC_MASK) != page_code) 6783 continue; 6784 6785 /* Look for the right subpage or the subpage wildcard*/ 6786 if ((lun->mode_pages.index[i].subpage != subpage) 6787 && (subpage != SMS_SUBPAGE_ALL)) 6788 continue; 6789 6790 /* Make sure the page is supported for this dev type */ 6791 if ((control_dev != 0) 6792 && (lun->mode_pages.index[i].page_flags & 6793 CTL_PAGE_FLAG_DISK_ONLY)) 6794 continue; 6795 6796#if 0 6797 printf("found page %#x len %d\n", 6798 lun->mode_pages.index[i].page_code & 6799 SMPH_PC_MASK, 6800 lun->mode_pages.index[i].page_len); 6801#endif 6802 6803 page_len += lun->mode_pages.index[i].page_len; 6804 } 6805 6806 if (page_len == 0) { 6807 ctl_set_invalid_field(ctsio, 6808 /*sks_valid*/ 1, 6809 /*command*/ 1, 6810 /*field*/ 2, 6811 /*bit_valid*/ 1, 6812 /*bit*/ 5); 6813 ctl_done((union ctl_io *)ctsio); 6814 return (CTL_RETVAL_COMPLETE); 6815 } 6816 break; 6817 } 6818 } 6819 6820 total_len = header_len + page_len; 6821#if 0 6822 printf("header_len = %d, page_len = %d, total_len = %d\n", 6823 header_len, page_len, total_len); 6824#endif 6825 6826 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6827 ctsio->kern_sg_entries = 0; 6828 ctsio->kern_data_resid = 0; 6829 ctsio->kern_rel_offset = 0; 6830 if (total_len < alloc_len) { 6831 ctsio->residual = alloc_len - total_len; 6832 ctsio->kern_data_len = total_len; 6833 ctsio->kern_total_len = total_len; 6834 } else { 6835 ctsio->residual = 0; 6836 ctsio->kern_data_len = alloc_len; 6837 ctsio->kern_total_len = alloc_len; 6838 } 6839 6840 switch (ctsio->cdb[0]) { 6841 case MODE_SENSE_6: { 6842 struct scsi_mode_hdr_6 *header; 6843 6844 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6845 6846 header->datalen = ctl_min(total_len - 1, 254); 6847 6848 if (dbd) 6849 header->block_descr_len = 0; 6850 else 6851 header->block_descr_len = 6852 sizeof(struct scsi_mode_block_descr); 6853 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6854 break; 6855 } 6856 case MODE_SENSE_10: { 6857 struct scsi_mode_hdr_10 *header; 6858 int datalen; 6859 6860 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6861 6862 datalen = ctl_min(total_len - 2, 65533); 6863 scsi_ulto2b(datalen, header->datalen); 6864 if (dbd) 6865 scsi_ulto2b(0, header->block_descr_len); 6866 else 6867 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6868 header->block_descr_len); 6869 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6870 break; 6871 } 6872 default: 6873 panic("invalid CDB type %#x", ctsio->cdb[0]); 6874 break; /* NOTREACHED */ 6875 } 6876 6877 /* 6878 * If we've got a disk, use its blocksize in the block 6879 * descriptor. Otherwise, just set it to 0. 6880 */ 6881 if (dbd == 0) { 6882 if (control_dev != 0) 6883 scsi_ulto3b(lun->be_lun->blocksize, 6884 block_desc->block_len); 6885 else 6886 scsi_ulto3b(0, block_desc->block_len); 6887 } 6888 6889 switch (page_code) { 6890 case SMS_ALL_PAGES_PAGE: { 6891 int i, data_used; 6892 6893 data_used = header_len; 6894 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6895 struct ctl_page_index *page_index; 6896 6897 page_index = &lun->mode_pages.index[i]; 6898 6899 if ((control_dev != 0) 6900 && (page_index->page_flags & 6901 CTL_PAGE_FLAG_DISK_ONLY)) 6902 continue; 6903 6904 /* 6905 * We don't use this subpage if the user didn't 6906 * request all subpages. We already checked (above) 6907 * to make sure the user only specified a subpage 6908 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6909 */ 6910 if ((page_index->subpage != 0) 6911 && (subpage == SMS_SUBPAGE_PAGE_0)) 6912 continue; 6913 6914 /* 6915 * Call the handler, if it exists, to update the 6916 * page to the latest values. 6917 */ 6918 if (page_index->sense_handler != NULL) 6919 page_index->sense_handler(ctsio, page_index,pc); 6920 6921 memcpy(ctsio->kern_data_ptr + data_used, 6922 page_index->page_data + 6923 (page_index->page_len * pc), 6924 page_index->page_len); 6925 data_used += page_index->page_len; 6926 } 6927 break; 6928 } 6929 default: { 6930 int i, data_used; 6931 6932 data_used = header_len; 6933 6934 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6935 struct ctl_page_index *page_index; 6936 6937 page_index = &lun->mode_pages.index[i]; 6938 6939 /* Look for the right page code */ 6940 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6941 continue; 6942 6943 /* Look for the right subpage or the subpage wildcard*/ 6944 if ((page_index->subpage != subpage) 6945 && (subpage != SMS_SUBPAGE_ALL)) 6946 continue; 6947 6948 /* Make sure the page is supported for this dev type */ 6949 if ((control_dev != 0) 6950 && (page_index->page_flags & 6951 CTL_PAGE_FLAG_DISK_ONLY)) 6952 continue; 6953 6954 /* 6955 * Call the handler, if it exists, to update the 6956 * page to the latest values. 6957 */ 6958 if (page_index->sense_handler != NULL) 6959 page_index->sense_handler(ctsio, page_index,pc); 6960 6961 memcpy(ctsio->kern_data_ptr + data_used, 6962 page_index->page_data + 6963 (page_index->page_len * pc), 6964 page_index->page_len); 6965 data_used += page_index->page_len; 6966 } 6967 break; 6968 } 6969 } 6970 6971 ctsio->scsi_status = SCSI_STATUS_OK; 6972 6973 ctsio->be_move_done = ctl_config_move_done; 6974 ctl_datamove((union ctl_io *)ctsio); 6975 6976 return (CTL_RETVAL_COMPLETE); 6977} 6978 6979int 6980ctl_read_capacity(struct ctl_scsiio *ctsio) 6981{ 6982 struct scsi_read_capacity *cdb; 6983 struct scsi_read_capacity_data *data; 6984 struct ctl_lun *lun; 6985 uint32_t lba; 6986 6987 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6988 6989 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6990 6991 lba = scsi_4btoul(cdb->addr); 6992 if (((cdb->pmi & SRC_PMI) == 0) 6993 && (lba != 0)) { 6994 ctl_set_invalid_field(/*ctsio*/ ctsio, 6995 /*sks_valid*/ 1, 6996 /*command*/ 1, 6997 /*field*/ 2, 6998 /*bit_valid*/ 0, 6999 /*bit*/ 0); 7000 ctl_done((union ctl_io *)ctsio); 7001 return (CTL_RETVAL_COMPLETE); 7002 } 7003 7004 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7005 7006 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7007 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 7008 ctsio->residual = 0; 7009 ctsio->kern_data_len = sizeof(*data); 7010 ctsio->kern_total_len = sizeof(*data); 7011 ctsio->kern_data_resid = 0; 7012 ctsio->kern_rel_offset = 0; 7013 ctsio->kern_sg_entries = 0; 7014 7015 /* 7016 * If the maximum LBA is greater than 0xfffffffe, the user must 7017 * issue a SERVICE ACTION IN (16) command, with the read capacity 7018 * serivce action set. 7019 */ 7020 if (lun->be_lun->maxlba > 0xfffffffe) 7021 scsi_ulto4b(0xffffffff, data->addr); 7022 else 7023 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 7024 7025 /* 7026 * XXX KDM this may not be 512 bytes... 7027 */ 7028 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7029 7030 ctsio->scsi_status = SCSI_STATUS_OK; 7031 7032 ctsio->be_move_done = ctl_config_move_done; 7033 ctl_datamove((union ctl_io *)ctsio); 7034 7035 return (CTL_RETVAL_COMPLETE); 7036} 7037 7038static int 7039ctl_read_capacity_16(struct ctl_scsiio *ctsio) 7040{ 7041 struct scsi_read_capacity_16 *cdb; 7042 struct scsi_read_capacity_data_long *data; 7043 struct ctl_lun *lun; 7044 uint64_t lba; 7045 uint32_t alloc_len; 7046 7047 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 7048 7049 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 7050 7051 alloc_len = scsi_4btoul(cdb->alloc_len); 7052 lba = scsi_8btou64(cdb->addr); 7053 7054 if ((cdb->reladr & SRC16_PMI) 7055 && (lba != 0)) { 7056 ctl_set_invalid_field(/*ctsio*/ ctsio, 7057 /*sks_valid*/ 1, 7058 /*command*/ 1, 7059 /*field*/ 2, 7060 /*bit_valid*/ 0, 7061 /*bit*/ 0); 7062 ctl_done((union ctl_io *)ctsio); 7063 return (CTL_RETVAL_COMPLETE); 7064 } 7065 7066 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7067 7068 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7069 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 7070 7071 if (sizeof(*data) < alloc_len) { 7072 ctsio->residual = alloc_len - sizeof(*data); 7073 ctsio->kern_data_len = sizeof(*data); 7074 ctsio->kern_total_len = sizeof(*data); 7075 } else { 7076 ctsio->residual = 0; 7077 ctsio->kern_data_len = alloc_len; 7078 ctsio->kern_total_len = alloc_len; 7079 } 7080 ctsio->kern_data_resid = 0; 7081 ctsio->kern_rel_offset = 0; 7082 ctsio->kern_sg_entries = 0; 7083 7084 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7085 /* XXX KDM this may not be 512 bytes... */ 7086 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7087 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7088 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7089 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7090 data->lalba_lbp[0] |= SRC16_LBPME; 7091 7092 ctsio->scsi_status = SCSI_STATUS_OK; 7093 7094 ctsio->be_move_done = ctl_config_move_done; 7095 ctl_datamove((union ctl_io *)ctsio); 7096 7097 return (CTL_RETVAL_COMPLETE); 7098} 7099 7100int 7101ctl_service_action_in(struct ctl_scsiio *ctsio) 7102{ 7103 struct scsi_service_action_in *cdb; 7104 int retval; 7105 7106 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 7107 7108 cdb = (struct scsi_service_action_in *)ctsio->cdb; 7109 7110 retval = CTL_RETVAL_COMPLETE; 7111 7112 switch (cdb->service_action) { 7113 case SRC16_SERVICE_ACTION: 7114 retval = ctl_read_capacity_16(ctsio); 7115 break; 7116 default: 7117 ctl_set_invalid_field(/*ctsio*/ ctsio, 7118 /*sks_valid*/ 1, 7119 /*command*/ 1, 7120 /*field*/ 1, 7121 /*bit_valid*/ 1, 7122 /*bit*/ 4); 7123 ctl_done((union ctl_io *)ctsio); 7124 break; 7125 } 7126 7127 return (retval); 7128} 7129 7130int 7131ctl_maintenance_in(struct ctl_scsiio *ctsio) 7132{ 7133 struct scsi_maintenance_in *cdb; 7134 int retval; 7135 int alloc_len, total_len = 0; 7136 int num_target_port_groups, single; 7137 struct ctl_lun *lun; 7138 struct ctl_softc *softc; 7139 struct scsi_target_group_data *rtg_ptr; 7140 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 7141 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 7142 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 7143 7144 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 7145 7146 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 7147 softc = control_softc; 7148 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7149 7150 retval = CTL_RETVAL_COMPLETE; 7151 7152 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 7153 ctl_set_invalid_field(/*ctsio*/ ctsio, 7154 /*sks_valid*/ 1, 7155 /*command*/ 1, 7156 /*field*/ 1, 7157 /*bit_valid*/ 1, 7158 /*bit*/ 4); 7159 ctl_done((union ctl_io *)ctsio); 7160 return(retval); 7161 } 7162 7163 mtx_lock(&softc->ctl_lock); 7164 single = ctl_is_single; 7165 mtx_unlock(&softc->ctl_lock); 7166 7167 if (single) 7168 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 7169 else 7170 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7171 7172 total_len = sizeof(struct scsi_target_group_data) + 7173 sizeof(struct scsi_target_port_group_descriptor) * 7174 num_target_port_groups + 7175 sizeof(struct scsi_target_port_descriptor) * 7176 NUM_PORTS_PER_GRP * num_target_port_groups; 7177 7178 alloc_len = scsi_4btoul(cdb->length); 7179 7180 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7181 7182 ctsio->kern_sg_entries = 0; 7183 7184 if (total_len < alloc_len) { 7185 ctsio->residual = alloc_len - total_len; 7186 ctsio->kern_data_len = total_len; 7187 ctsio->kern_total_len = total_len; 7188 } else { 7189 ctsio->residual = 0; 7190 ctsio->kern_data_len = alloc_len; 7191 ctsio->kern_total_len = alloc_len; 7192 } 7193 ctsio->kern_data_resid = 0; 7194 ctsio->kern_rel_offset = 0; 7195 7196 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7197 7198 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7199 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7200 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7201 &tp_desc_ptr1_1->desc_list[0]; 7202 7203 if (single == 0) { 7204 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7205 &tp_desc_ptr1_2->desc_list[0]; 7206 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7207 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7208 &tp_desc_ptr2_1->desc_list[0]; 7209 } else { 7210 tpg_desc_ptr2 = NULL; 7211 tp_desc_ptr2_1 = NULL; 7212 tp_desc_ptr2_2 = NULL; 7213 } 7214 7215 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7216 if (single == 0) { 7217 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7218 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7219 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7220 tpg_desc_ptr2->pref_state = 7221 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7222 } else { 7223 tpg_desc_ptr1->pref_state = 7224 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7225 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7226 } 7227 } else { 7228 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7229 tpg_desc_ptr1->pref_state = 7230 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7231 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7232 } else { 7233 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7234 tpg_desc_ptr2->pref_state = 7235 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7236 } 7237 } 7238 } else { 7239 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7240 } 7241 tpg_desc_ptr1->support = 0; 7242 tpg_desc_ptr1->target_port_group[1] = 1; 7243 tpg_desc_ptr1->status = TPG_IMPLICIT; 7244 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7245 7246 if (single == 0) { 7247 tpg_desc_ptr2->support = 0; 7248 tpg_desc_ptr2->target_port_group[1] = 2; 7249 tpg_desc_ptr2->status = TPG_IMPLICIT; 7250 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7251 7252 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7253 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7254 7255 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7256 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7257 } else { 7258 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7259 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7260 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7261 } else { 7262 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7263 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7264 } 7265 } 7266 7267 ctsio->be_move_done = ctl_config_move_done; 7268 7269 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7270 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7271 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7272 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7273 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7274 7275 ctl_datamove((union ctl_io *)ctsio); 7276 return(retval); 7277} 7278 7279int 7280ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7281{ 7282 struct scsi_per_res_in *cdb; 7283 int alloc_len, total_len = 0; 7284 /* struct scsi_per_res_in_rsrv in_data; */ 7285 struct ctl_lun *lun; 7286 struct ctl_softc *softc; 7287 7288 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7289 7290 softc = control_softc; 7291 7292 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7293 7294 alloc_len = scsi_2btoul(cdb->length); 7295 7296 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7297 7298retry: 7299 mtx_lock(&softc->ctl_lock); 7300 switch (cdb->action) { 7301 case SPRI_RK: /* read keys */ 7302 total_len = sizeof(struct scsi_per_res_in_keys) + 7303 lun->pr_key_count * 7304 sizeof(struct scsi_per_res_key); 7305 break; 7306 case SPRI_RR: /* read reservation */ 7307 if (lun->flags & CTL_LUN_PR_RESERVED) 7308 total_len = sizeof(struct scsi_per_res_in_rsrv); 7309 else 7310 total_len = sizeof(struct scsi_per_res_in_header); 7311 break; 7312 case SPRI_RC: /* report capabilities */ 7313 total_len = sizeof(struct scsi_per_res_cap); 7314 break; 7315 case SPRI_RS: /* read full status */ 7316 default: 7317 mtx_unlock(&softc->ctl_lock); 7318 ctl_set_invalid_field(ctsio, 7319 /*sks_valid*/ 1, 7320 /*command*/ 1, 7321 /*field*/ 1, 7322 /*bit_valid*/ 1, 7323 /*bit*/ 0); 7324 ctl_done((union ctl_io *)ctsio); 7325 return (CTL_RETVAL_COMPLETE); 7326 break; /* NOTREACHED */ 7327 } 7328 mtx_unlock(&softc->ctl_lock); 7329 7330 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7331 7332 if (total_len < alloc_len) { 7333 ctsio->residual = alloc_len - total_len; 7334 ctsio->kern_data_len = total_len; 7335 ctsio->kern_total_len = total_len; 7336 } else { 7337 ctsio->residual = 0; 7338 ctsio->kern_data_len = alloc_len; 7339 ctsio->kern_total_len = alloc_len; 7340 } 7341 7342 ctsio->kern_data_resid = 0; 7343 ctsio->kern_rel_offset = 0; 7344 ctsio->kern_sg_entries = 0; 7345 7346 mtx_lock(&softc->ctl_lock); 7347 switch (cdb->action) { 7348 case SPRI_RK: { // read keys 7349 struct scsi_per_res_in_keys *res_keys; 7350 int i, key_count; 7351 7352 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7353 7354 /* 7355 * We had to drop the lock to allocate our buffer, which 7356 * leaves time for someone to come in with another 7357 * persistent reservation. (That is unlikely, though, 7358 * since this should be the only persistent reservation 7359 * command active right now.) 7360 */ 7361 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7362 (lun->pr_key_count * 7363 sizeof(struct scsi_per_res_key)))){ 7364 mtx_unlock(&softc->ctl_lock); 7365 free(ctsio->kern_data_ptr, M_CTL); 7366 printf("%s: reservation length changed, retrying\n", 7367 __func__); 7368 goto retry; 7369 } 7370 7371 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7372 7373 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7374 lun->pr_key_count, res_keys->header.length); 7375 7376 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7377 if (!lun->per_res[i].registered) 7378 continue; 7379 7380 /* 7381 * We used lun->pr_key_count to calculate the 7382 * size to allocate. If it turns out the number of 7383 * initiators with the registered flag set is 7384 * larger than that (i.e. they haven't been kept in 7385 * sync), we've got a problem. 7386 */ 7387 if (key_count >= lun->pr_key_count) { 7388#ifdef NEEDTOPORT 7389 csevent_log(CSC_CTL | CSC_SHELF_SW | 7390 CTL_PR_ERROR, 7391 csevent_LogType_Fault, 7392 csevent_AlertLevel_Yellow, 7393 csevent_FRU_ShelfController, 7394 csevent_FRU_Firmware, 7395 csevent_FRU_Unknown, 7396 "registered keys %d >= key " 7397 "count %d", key_count, 7398 lun->pr_key_count); 7399#endif 7400 key_count++; 7401 continue; 7402 } 7403 memcpy(res_keys->keys[key_count].key, 7404 lun->per_res[i].res_key.key, 7405 ctl_min(sizeof(res_keys->keys[key_count].key), 7406 sizeof(lun->per_res[i].res_key))); 7407 key_count++; 7408 } 7409 break; 7410 } 7411 case SPRI_RR: { // read reservation 7412 struct scsi_per_res_in_rsrv *res; 7413 int tmp_len, header_only; 7414 7415 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7416 7417 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7418 7419 if (lun->flags & CTL_LUN_PR_RESERVED) 7420 { 7421 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7422 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7423 res->header.length); 7424 header_only = 0; 7425 } else { 7426 tmp_len = sizeof(struct scsi_per_res_in_header); 7427 scsi_ulto4b(0, res->header.length); 7428 header_only = 1; 7429 } 7430 7431 /* 7432 * We had to drop the lock to allocate our buffer, which 7433 * leaves time for someone to come in with another 7434 * persistent reservation. (That is unlikely, though, 7435 * since this should be the only persistent reservation 7436 * command active right now.) 7437 */ 7438 if (tmp_len != total_len) { 7439 mtx_unlock(&softc->ctl_lock); 7440 free(ctsio->kern_data_ptr, M_CTL); 7441 printf("%s: reservation status changed, retrying\n", 7442 __func__); 7443 goto retry; 7444 } 7445 7446 /* 7447 * No reservation held, so we're done. 7448 */ 7449 if (header_only != 0) 7450 break; 7451 7452 /* 7453 * If the registration is an All Registrants type, the key 7454 * is 0, since it doesn't really matter. 7455 */ 7456 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7457 memcpy(res->data.reservation, 7458 &lun->per_res[lun->pr_res_idx].res_key, 7459 sizeof(struct scsi_per_res_key)); 7460 } 7461 res->data.scopetype = lun->res_type; 7462 break; 7463 } 7464 case SPRI_RC: //report capabilities 7465 { 7466 struct scsi_per_res_cap *res_cap; 7467 uint16_t type_mask; 7468 7469 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7470 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7471 res_cap->flags2 |= SPRI_TMV; 7472 type_mask = SPRI_TM_WR_EX_AR | 7473 SPRI_TM_EX_AC_RO | 7474 SPRI_TM_WR_EX_RO | 7475 SPRI_TM_EX_AC | 7476 SPRI_TM_WR_EX | 7477 SPRI_TM_EX_AC_AR; 7478 scsi_ulto2b(type_mask, res_cap->type_mask); 7479 break; 7480 } 7481 case SPRI_RS: //read full status 7482 default: 7483 /* 7484 * This is a bug, because we just checked for this above, 7485 * and should have returned an error. 7486 */ 7487 panic("Invalid PR type %x", cdb->action); 7488 break; /* NOTREACHED */ 7489 } 7490 mtx_unlock(&softc->ctl_lock); 7491 7492 ctsio->be_move_done = ctl_config_move_done; 7493 7494 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7495 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7496 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7497 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7498 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7499 7500 ctl_datamove((union ctl_io *)ctsio); 7501 7502 return (CTL_RETVAL_COMPLETE); 7503} 7504 7505/* 7506 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7507 * it should return. 7508 */ 7509static int 7510ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7511 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7512 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7513 struct scsi_per_res_out_parms* param) 7514{ 7515 union ctl_ha_msg persis_io; 7516 int retval, i; 7517 int isc_retval; 7518 7519 retval = 0; 7520 7521 if (sa_res_key == 0) { 7522 mtx_lock(&softc->ctl_lock); 7523 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7524 /* validate scope and type */ 7525 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7526 SPR_LU_SCOPE) { 7527 mtx_unlock(&softc->ctl_lock); 7528 ctl_set_invalid_field(/*ctsio*/ ctsio, 7529 /*sks_valid*/ 1, 7530 /*command*/ 1, 7531 /*field*/ 2, 7532 /*bit_valid*/ 1, 7533 /*bit*/ 4); 7534 ctl_done((union ctl_io *)ctsio); 7535 return (1); 7536 } 7537 7538 if (type>8 || type==2 || type==4 || type==0) { 7539 mtx_unlock(&softc->ctl_lock); 7540 ctl_set_invalid_field(/*ctsio*/ ctsio, 7541 /*sks_valid*/ 1, 7542 /*command*/ 1, 7543 /*field*/ 2, 7544 /*bit_valid*/ 1, 7545 /*bit*/ 0); 7546 ctl_done((union ctl_io *)ctsio); 7547 return (1); 7548 } 7549 7550 /* temporarily unregister this nexus */ 7551 lun->per_res[residx].registered = 0; 7552 7553 /* 7554 * Unregister everybody else and build UA for 7555 * them 7556 */ 7557 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7558 if (lun->per_res[i].registered == 0) 7559 continue; 7560 7561 if (!persis_offset 7562 && i <CTL_MAX_INITIATORS) 7563 lun->pending_sense[i].ua_pending |= 7564 CTL_UA_REG_PREEMPT; 7565 else if (persis_offset 7566 && i >= persis_offset) 7567 lun->pending_sense[i-persis_offset 7568 ].ua_pending |= 7569 CTL_UA_REG_PREEMPT; 7570 lun->per_res[i].registered = 0; 7571 memset(&lun->per_res[i].res_key, 0, 7572 sizeof(struct scsi_per_res_key)); 7573 } 7574 lun->per_res[residx].registered = 1; 7575 lun->pr_key_count = 1; 7576 lun->res_type = type; 7577 if (lun->res_type != SPR_TYPE_WR_EX_AR 7578 && lun->res_type != SPR_TYPE_EX_AC_AR) 7579 lun->pr_res_idx = residx; 7580 7581 mtx_unlock(&softc->ctl_lock); 7582 /* send msg to other side */ 7583 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7584 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7585 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7586 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7587 persis_io.pr.pr_info.res_type = type; 7588 memcpy(persis_io.pr.pr_info.sa_res_key, 7589 param->serv_act_res_key, 7590 sizeof(param->serv_act_res_key)); 7591 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7592 &persis_io, sizeof(persis_io), 0)) > 7593 CTL_HA_STATUS_SUCCESS) { 7594 printf("CTL:Persis Out error returned " 7595 "from ctl_ha_msg_send %d\n", 7596 isc_retval); 7597 } 7598 } else { 7599 /* not all registrants */ 7600 mtx_unlock(&softc->ctl_lock); 7601 free(ctsio->kern_data_ptr, M_CTL); 7602 ctl_set_invalid_field(ctsio, 7603 /*sks_valid*/ 1, 7604 /*command*/ 0, 7605 /*field*/ 8, 7606 /*bit_valid*/ 0, 7607 /*bit*/ 0); 7608 ctl_done((union ctl_io *)ctsio); 7609 return (1); 7610 } 7611 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7612 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7613 int found = 0; 7614 7615 mtx_lock(&softc->ctl_lock); 7616 if (res_key == sa_res_key) { 7617 /* special case */ 7618 /* 7619 * The spec implies this is not good but doesn't 7620 * say what to do. There are two choices either 7621 * generate a res conflict or check condition 7622 * with illegal field in parameter data. Since 7623 * that is what is done when the sa_res_key is 7624 * zero I'll take that approach since this has 7625 * to do with the sa_res_key. 7626 */ 7627 mtx_unlock(&softc->ctl_lock); 7628 free(ctsio->kern_data_ptr, M_CTL); 7629 ctl_set_invalid_field(ctsio, 7630 /*sks_valid*/ 1, 7631 /*command*/ 0, 7632 /*field*/ 8, 7633 /*bit_valid*/ 0, 7634 /*bit*/ 0); 7635 ctl_done((union ctl_io *)ctsio); 7636 return (1); 7637 } 7638 7639 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7640 if (lun->per_res[i].registered 7641 && memcmp(param->serv_act_res_key, 7642 lun->per_res[i].res_key.key, 7643 sizeof(struct scsi_per_res_key)) != 0) 7644 continue; 7645 7646 found = 1; 7647 lun->per_res[i].registered = 0; 7648 memset(&lun->per_res[i].res_key, 0, 7649 sizeof(struct scsi_per_res_key)); 7650 lun->pr_key_count--; 7651 7652 if (!persis_offset 7653 && i < CTL_MAX_INITIATORS) 7654 lun->pending_sense[i].ua_pending |= 7655 CTL_UA_REG_PREEMPT; 7656 else if (persis_offset 7657 && i >= persis_offset) 7658 lun->pending_sense[i-persis_offset].ua_pending|= 7659 CTL_UA_REG_PREEMPT; 7660 } 7661 mtx_unlock(&softc->ctl_lock); 7662 if (!found) { 7663 free(ctsio->kern_data_ptr, M_CTL); 7664 ctl_set_reservation_conflict(ctsio); 7665 ctl_done((union ctl_io *)ctsio); 7666 return (CTL_RETVAL_COMPLETE); 7667 } 7668 /* send msg to other side */ 7669 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7670 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7671 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7672 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7673 persis_io.pr.pr_info.res_type = type; 7674 memcpy(persis_io.pr.pr_info.sa_res_key, 7675 param->serv_act_res_key, 7676 sizeof(param->serv_act_res_key)); 7677 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7678 &persis_io, sizeof(persis_io), 0)) > 7679 CTL_HA_STATUS_SUCCESS) { 7680 printf("CTL:Persis Out error returned from " 7681 "ctl_ha_msg_send %d\n", isc_retval); 7682 } 7683 } else { 7684 /* Reserved but not all registrants */ 7685 /* sa_res_key is res holder */ 7686 if (memcmp(param->serv_act_res_key, 7687 lun->per_res[lun->pr_res_idx].res_key.key, 7688 sizeof(struct scsi_per_res_key)) == 0) { 7689 /* validate scope and type */ 7690 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7691 SPR_LU_SCOPE) { 7692 ctl_set_invalid_field(/*ctsio*/ ctsio, 7693 /*sks_valid*/ 1, 7694 /*command*/ 1, 7695 /*field*/ 2, 7696 /*bit_valid*/ 1, 7697 /*bit*/ 4); 7698 ctl_done((union ctl_io *)ctsio); 7699 return (1); 7700 } 7701 7702 if (type>8 || type==2 || type==4 || type==0) { 7703 ctl_set_invalid_field(/*ctsio*/ ctsio, 7704 /*sks_valid*/ 1, 7705 /*command*/ 1, 7706 /*field*/ 2, 7707 /*bit_valid*/ 1, 7708 /*bit*/ 0); 7709 ctl_done((union ctl_io *)ctsio); 7710 return (1); 7711 } 7712 7713 /* 7714 * Do the following: 7715 * if sa_res_key != res_key remove all 7716 * registrants w/sa_res_key and generate UA 7717 * for these registrants(Registrations 7718 * Preempted) if it wasn't an exclusive 7719 * reservation generate UA(Reservations 7720 * Preempted) for all other registered nexuses 7721 * if the type has changed. Establish the new 7722 * reservation and holder. If res_key and 7723 * sa_res_key are the same do the above 7724 * except don't unregister the res holder. 7725 */ 7726 7727 /* 7728 * Temporarily unregister so it won't get 7729 * removed or UA generated 7730 */ 7731 lun->per_res[residx].registered = 0; 7732 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7733 if (lun->per_res[i].registered == 0) 7734 continue; 7735 7736 if (memcmp(param->serv_act_res_key, 7737 lun->per_res[i].res_key.key, 7738 sizeof(struct scsi_per_res_key)) == 0) { 7739 lun->per_res[i].registered = 0; 7740 memset(&lun->per_res[i].res_key, 7741 0, 7742 sizeof(struct scsi_per_res_key)); 7743 lun->pr_key_count--; 7744 7745 if (!persis_offset 7746 && i < CTL_MAX_INITIATORS) 7747 lun->pending_sense[i 7748 ].ua_pending |= 7749 CTL_UA_REG_PREEMPT; 7750 else if (persis_offset 7751 && i >= persis_offset) 7752 lun->pending_sense[ 7753 i-persis_offset].ua_pending |= 7754 CTL_UA_REG_PREEMPT; 7755 } else if (type != lun->res_type 7756 && (lun->res_type == SPR_TYPE_WR_EX_RO 7757 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7758 if (!persis_offset 7759 && i < CTL_MAX_INITIATORS) 7760 lun->pending_sense[i 7761 ].ua_pending |= 7762 CTL_UA_RES_RELEASE; 7763 else if (persis_offset 7764 && i >= persis_offset) 7765 lun->pending_sense[ 7766 i-persis_offset 7767 ].ua_pending |= 7768 CTL_UA_RES_RELEASE; 7769 } 7770 } 7771 lun->per_res[residx].registered = 1; 7772 lun->res_type = type; 7773 if (lun->res_type != SPR_TYPE_WR_EX_AR 7774 && lun->res_type != SPR_TYPE_EX_AC_AR) 7775 lun->pr_res_idx = residx; 7776 else 7777 lun->pr_res_idx = 7778 CTL_PR_ALL_REGISTRANTS; 7779 7780 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7781 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7782 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7783 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7784 persis_io.pr.pr_info.res_type = type; 7785 memcpy(persis_io.pr.pr_info.sa_res_key, 7786 param->serv_act_res_key, 7787 sizeof(param->serv_act_res_key)); 7788 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7789 &persis_io, sizeof(persis_io), 0)) > 7790 CTL_HA_STATUS_SUCCESS) { 7791 printf("CTL:Persis Out error returned " 7792 "from ctl_ha_msg_send %d\n", 7793 isc_retval); 7794 } 7795 } else { 7796 /* 7797 * sa_res_key is not the res holder just 7798 * remove registrants 7799 */ 7800 int found=0; 7801 mtx_lock(&softc->ctl_lock); 7802 7803 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7804 if (memcmp(param->serv_act_res_key, 7805 lun->per_res[i].res_key.key, 7806 sizeof(struct scsi_per_res_key)) != 0) 7807 continue; 7808 7809 found = 1; 7810 lun->per_res[i].registered = 0; 7811 memset(&lun->per_res[i].res_key, 0, 7812 sizeof(struct scsi_per_res_key)); 7813 lun->pr_key_count--; 7814 7815 if (!persis_offset 7816 && i < CTL_MAX_INITIATORS) 7817 lun->pending_sense[i].ua_pending |= 7818 CTL_UA_REG_PREEMPT; 7819 else if (persis_offset 7820 && i >= persis_offset) 7821 lun->pending_sense[ 7822 i-persis_offset].ua_pending |= 7823 CTL_UA_REG_PREEMPT; 7824 } 7825 7826 if (!found) { 7827 mtx_unlock(&softc->ctl_lock); 7828 free(ctsio->kern_data_ptr, M_CTL); 7829 ctl_set_reservation_conflict(ctsio); 7830 ctl_done((union ctl_io *)ctsio); 7831 return (1); 7832 } 7833 mtx_unlock(&softc->ctl_lock); 7834 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7835 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7836 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7837 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7838 persis_io.pr.pr_info.res_type = type; 7839 memcpy(persis_io.pr.pr_info.sa_res_key, 7840 param->serv_act_res_key, 7841 sizeof(param->serv_act_res_key)); 7842 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7843 &persis_io, sizeof(persis_io), 0)) > 7844 CTL_HA_STATUS_SUCCESS) { 7845 printf("CTL:Persis Out error returned " 7846 "from ctl_ha_msg_send %d\n", 7847 isc_retval); 7848 } 7849 } 7850 } 7851 7852 lun->PRGeneration++; 7853 7854 return (retval); 7855} 7856 7857static void 7858ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7859{ 7860 int i; 7861 7862 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7863 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7864 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7865 msg->pr.pr_info.sa_res_key, 7866 sizeof(struct scsi_per_res_key)) != 0) { 7867 uint64_t sa_res_key; 7868 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7869 7870 if (sa_res_key == 0) { 7871 /* temporarily unregister this nexus */ 7872 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7873 7874 /* 7875 * Unregister everybody else and build UA for 7876 * them 7877 */ 7878 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7879 if (lun->per_res[i].registered == 0) 7880 continue; 7881 7882 if (!persis_offset 7883 && i < CTL_MAX_INITIATORS) 7884 lun->pending_sense[i].ua_pending |= 7885 CTL_UA_REG_PREEMPT; 7886 else if (persis_offset && i >= persis_offset) 7887 lun->pending_sense[i - 7888 persis_offset].ua_pending |= 7889 CTL_UA_REG_PREEMPT; 7890 lun->per_res[i].registered = 0; 7891 memset(&lun->per_res[i].res_key, 0, 7892 sizeof(struct scsi_per_res_key)); 7893 } 7894 7895 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7896 lun->pr_key_count = 1; 7897 lun->res_type = msg->pr.pr_info.res_type; 7898 if (lun->res_type != SPR_TYPE_WR_EX_AR 7899 && lun->res_type != SPR_TYPE_EX_AC_AR) 7900 lun->pr_res_idx = msg->pr.pr_info.residx; 7901 } else { 7902 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7903 if (memcmp(msg->pr.pr_info.sa_res_key, 7904 lun->per_res[i].res_key.key, 7905 sizeof(struct scsi_per_res_key)) != 0) 7906 continue; 7907 7908 lun->per_res[i].registered = 0; 7909 memset(&lun->per_res[i].res_key, 0, 7910 sizeof(struct scsi_per_res_key)); 7911 lun->pr_key_count--; 7912 7913 if (!persis_offset 7914 && i < persis_offset) 7915 lun->pending_sense[i].ua_pending |= 7916 CTL_UA_REG_PREEMPT; 7917 else if (persis_offset 7918 && i >= persis_offset) 7919 lun->pending_sense[i - 7920 persis_offset].ua_pending |= 7921 CTL_UA_REG_PREEMPT; 7922 } 7923 } 7924 } else { 7925 /* 7926 * Temporarily unregister so it won't get removed 7927 * or UA generated 7928 */ 7929 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7930 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7931 if (lun->per_res[i].registered == 0) 7932 continue; 7933 7934 if (memcmp(msg->pr.pr_info.sa_res_key, 7935 lun->per_res[i].res_key.key, 7936 sizeof(struct scsi_per_res_key)) == 0) { 7937 lun->per_res[i].registered = 0; 7938 memset(&lun->per_res[i].res_key, 0, 7939 sizeof(struct scsi_per_res_key)); 7940 lun->pr_key_count--; 7941 if (!persis_offset 7942 && i < CTL_MAX_INITIATORS) 7943 lun->pending_sense[i].ua_pending |= 7944 CTL_UA_REG_PREEMPT; 7945 else if (persis_offset 7946 && i >= persis_offset) 7947 lun->pending_sense[i - 7948 persis_offset].ua_pending |= 7949 CTL_UA_REG_PREEMPT; 7950 } else if (msg->pr.pr_info.res_type != lun->res_type 7951 && (lun->res_type == SPR_TYPE_WR_EX_RO 7952 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7953 if (!persis_offset 7954 && i < persis_offset) 7955 lun->pending_sense[i 7956 ].ua_pending |= 7957 CTL_UA_RES_RELEASE; 7958 else if (persis_offset 7959 && i >= persis_offset) 7960 lun->pending_sense[i - 7961 persis_offset].ua_pending |= 7962 CTL_UA_RES_RELEASE; 7963 } 7964 } 7965 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7966 lun->res_type = msg->pr.pr_info.res_type; 7967 if (lun->res_type != SPR_TYPE_WR_EX_AR 7968 && lun->res_type != SPR_TYPE_EX_AC_AR) 7969 lun->pr_res_idx = msg->pr.pr_info.residx; 7970 else 7971 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7972 } 7973 lun->PRGeneration++; 7974 7975} 7976 7977 7978int 7979ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7980{ 7981 int retval; 7982 int isc_retval; 7983 u_int32_t param_len; 7984 struct scsi_per_res_out *cdb; 7985 struct ctl_lun *lun; 7986 struct scsi_per_res_out_parms* param; 7987 struct ctl_softc *softc; 7988 uint32_t residx; 7989 uint64_t res_key, sa_res_key; 7990 uint8_t type; 7991 union ctl_ha_msg persis_io; 7992 int i; 7993 7994 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 7995 7996 retval = CTL_RETVAL_COMPLETE; 7997 7998 softc = control_softc; 7999 8000 cdb = (struct scsi_per_res_out *)ctsio->cdb; 8001 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8002 8003 /* 8004 * We only support whole-LUN scope. The scope & type are ignored for 8005 * register, register and ignore existing key and clear. 8006 * We sometimes ignore scope and type on preempts too!! 8007 * Verify reservation type here as well. 8008 */ 8009 type = cdb->scope_type & SPR_TYPE_MASK; 8010 if ((cdb->action == SPRO_RESERVE) 8011 || (cdb->action == SPRO_RELEASE)) { 8012 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 8013 ctl_set_invalid_field(/*ctsio*/ ctsio, 8014 /*sks_valid*/ 1, 8015 /*command*/ 1, 8016 /*field*/ 2, 8017 /*bit_valid*/ 1, 8018 /*bit*/ 4); 8019 ctl_done((union ctl_io *)ctsio); 8020 return (CTL_RETVAL_COMPLETE); 8021 } 8022 8023 if (type>8 || type==2 || type==4 || type==0) { 8024 ctl_set_invalid_field(/*ctsio*/ ctsio, 8025 /*sks_valid*/ 1, 8026 /*command*/ 1, 8027 /*field*/ 2, 8028 /*bit_valid*/ 1, 8029 /*bit*/ 0); 8030 ctl_done((union ctl_io *)ctsio); 8031 return (CTL_RETVAL_COMPLETE); 8032 } 8033 } 8034 8035 switch (cdb->action & SPRO_ACTION_MASK) { 8036 case SPRO_REGISTER: 8037 case SPRO_RESERVE: 8038 case SPRO_RELEASE: 8039 case SPRO_CLEAR: 8040 case SPRO_PREEMPT: 8041 case SPRO_REG_IGNO: 8042 break; 8043 case SPRO_REG_MOVE: 8044 case SPRO_PRE_ABO: 8045 default: 8046 ctl_set_invalid_field(/*ctsio*/ ctsio, 8047 /*sks_valid*/ 1, 8048 /*command*/ 1, 8049 /*field*/ 1, 8050 /*bit_valid*/ 1, 8051 /*bit*/ 0); 8052 ctl_done((union ctl_io *)ctsio); 8053 return (CTL_RETVAL_COMPLETE); 8054 break; /* NOTREACHED */ 8055 } 8056 8057 param_len = scsi_4btoul(cdb->length); 8058 8059 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 8060 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 8061 ctsio->kern_data_len = param_len; 8062 ctsio->kern_total_len = param_len; 8063 ctsio->kern_data_resid = 0; 8064 ctsio->kern_rel_offset = 0; 8065 ctsio->kern_sg_entries = 0; 8066 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 8067 ctsio->be_move_done = ctl_config_move_done; 8068 ctl_datamove((union ctl_io *)ctsio); 8069 8070 return (CTL_RETVAL_COMPLETE); 8071 } 8072 8073 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 8074 8075 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8076 res_key = scsi_8btou64(param->res_key.key); 8077 sa_res_key = scsi_8btou64(param->serv_act_res_key); 8078 8079 /* 8080 * Validate the reservation key here except for SPRO_REG_IGNO 8081 * This must be done for all other service actions 8082 */ 8083 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8084 mtx_lock(&softc->ctl_lock); 8085 if (lun->per_res[residx].registered) { 8086 if (memcmp(param->res_key.key, 8087 lun->per_res[residx].res_key.key, 8088 ctl_min(sizeof(param->res_key), 8089 sizeof(lun->per_res[residx].res_key))) != 0) { 8090 /* 8091 * The current key passed in doesn't match 8092 * the one the initiator previously 8093 * registered. 8094 */ 8095 mtx_unlock(&softc->ctl_lock); 8096 free(ctsio->kern_data_ptr, M_CTL); 8097 ctl_set_reservation_conflict(ctsio); 8098 ctl_done((union ctl_io *)ctsio); 8099 return (CTL_RETVAL_COMPLETE); 8100 } 8101 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8102 /* 8103 * We are not registered 8104 */ 8105 mtx_unlock(&softc->ctl_lock); 8106 free(ctsio->kern_data_ptr, M_CTL); 8107 ctl_set_reservation_conflict(ctsio); 8108 ctl_done((union ctl_io *)ctsio); 8109 return (CTL_RETVAL_COMPLETE); 8110 } else if (res_key != 0) { 8111 /* 8112 * We are not registered and trying to register but 8113 * the register key isn't zero. 8114 */ 8115 mtx_unlock(&softc->ctl_lock); 8116 free(ctsio->kern_data_ptr, M_CTL); 8117 ctl_set_reservation_conflict(ctsio); 8118 ctl_done((union ctl_io *)ctsio); 8119 return (CTL_RETVAL_COMPLETE); 8120 } 8121 mtx_unlock(&softc->ctl_lock); 8122 } 8123 8124 switch (cdb->action & SPRO_ACTION_MASK) { 8125 case SPRO_REGISTER: 8126 case SPRO_REG_IGNO: { 8127 8128#if 0 8129 printf("Registration received\n"); 8130#endif 8131 8132 /* 8133 * We don't support any of these options, as we report in 8134 * the read capabilities request (see 8135 * ctl_persistent_reserve_in(), above). 8136 */ 8137 if ((param->flags & SPR_SPEC_I_PT) 8138 || (param->flags & SPR_ALL_TG_PT) 8139 || (param->flags & SPR_APTPL)) { 8140 int bit_ptr; 8141 8142 if (param->flags & SPR_APTPL) 8143 bit_ptr = 0; 8144 else if (param->flags & SPR_ALL_TG_PT) 8145 bit_ptr = 2; 8146 else /* SPR_SPEC_I_PT */ 8147 bit_ptr = 3; 8148 8149 free(ctsio->kern_data_ptr, M_CTL); 8150 ctl_set_invalid_field(ctsio, 8151 /*sks_valid*/ 1, 8152 /*command*/ 0, 8153 /*field*/ 20, 8154 /*bit_valid*/ 1, 8155 /*bit*/ bit_ptr); 8156 ctl_done((union ctl_io *)ctsio); 8157 return (CTL_RETVAL_COMPLETE); 8158 } 8159 8160 mtx_lock(&softc->ctl_lock); 8161 8162 /* 8163 * The initiator wants to clear the 8164 * key/unregister. 8165 */ 8166 if (sa_res_key == 0) { 8167 if ((res_key == 0 8168 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8169 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8170 && !lun->per_res[residx].registered)) { 8171 mtx_unlock(&softc->ctl_lock); 8172 goto done; 8173 } 8174 8175 lun->per_res[residx].registered = 0; 8176 memset(&lun->per_res[residx].res_key, 8177 0, sizeof(lun->per_res[residx].res_key)); 8178 lun->pr_key_count--; 8179 8180 if (residx == lun->pr_res_idx) { 8181 lun->flags &= ~CTL_LUN_PR_RESERVED; 8182 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8183 8184 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8185 || lun->res_type == SPR_TYPE_EX_AC_RO) 8186 && lun->pr_key_count) { 8187 /* 8188 * If the reservation is a registrants 8189 * only type we need to generate a UA 8190 * for other registered inits. The 8191 * sense code should be RESERVATIONS 8192 * RELEASED 8193 */ 8194 8195 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8196 if (lun->per_res[ 8197 i+persis_offset].registered 8198 == 0) 8199 continue; 8200 lun->pending_sense[i 8201 ].ua_pending |= 8202 CTL_UA_RES_RELEASE; 8203 } 8204 } 8205 lun->res_type = 0; 8206 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8207 if (lun->pr_key_count==0) { 8208 lun->flags &= ~CTL_LUN_PR_RESERVED; 8209 lun->res_type = 0; 8210 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8211 } 8212 } 8213 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8214 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8215 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8216 persis_io.pr.pr_info.residx = residx; 8217 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8218 &persis_io, sizeof(persis_io), 0 )) > 8219 CTL_HA_STATUS_SUCCESS) { 8220 printf("CTL:Persis Out error returned from " 8221 "ctl_ha_msg_send %d\n", isc_retval); 8222 } 8223 mtx_unlock(&softc->ctl_lock); 8224 } else /* sa_res_key != 0 */ { 8225 8226 /* 8227 * If we aren't registered currently then increment 8228 * the key count and set the registered flag. 8229 */ 8230 if (!lun->per_res[residx].registered) { 8231 lun->pr_key_count++; 8232 lun->per_res[residx].registered = 1; 8233 } 8234 8235 memcpy(&lun->per_res[residx].res_key, 8236 param->serv_act_res_key, 8237 ctl_min(sizeof(param->serv_act_res_key), 8238 sizeof(lun->per_res[residx].res_key))); 8239 8240 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8241 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8242 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8243 persis_io.pr.pr_info.residx = residx; 8244 memcpy(persis_io.pr.pr_info.sa_res_key, 8245 param->serv_act_res_key, 8246 sizeof(param->serv_act_res_key)); 8247 mtx_unlock(&softc->ctl_lock); 8248 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8249 &persis_io, sizeof(persis_io), 0)) > 8250 CTL_HA_STATUS_SUCCESS) { 8251 printf("CTL:Persis Out error returned from " 8252 "ctl_ha_msg_send %d\n", isc_retval); 8253 } 8254 } 8255 lun->PRGeneration++; 8256 8257 break; 8258 } 8259 case SPRO_RESERVE: 8260#if 0 8261 printf("Reserve executed type %d\n", type); 8262#endif 8263 mtx_lock(&softc->ctl_lock); 8264 if (lun->flags & CTL_LUN_PR_RESERVED) { 8265 /* 8266 * if this isn't the reservation holder and it's 8267 * not a "all registrants" type or if the type is 8268 * different then we have a conflict 8269 */ 8270 if ((lun->pr_res_idx != residx 8271 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8272 || lun->res_type != type) { 8273 mtx_unlock(&softc->ctl_lock); 8274 free(ctsio->kern_data_ptr, M_CTL); 8275 ctl_set_reservation_conflict(ctsio); 8276 ctl_done((union ctl_io *)ctsio); 8277 return (CTL_RETVAL_COMPLETE); 8278 } 8279 mtx_unlock(&softc->ctl_lock); 8280 } else /* create a reservation */ { 8281 /* 8282 * If it's not an "all registrants" type record 8283 * reservation holder 8284 */ 8285 if (type != SPR_TYPE_WR_EX_AR 8286 && type != SPR_TYPE_EX_AC_AR) 8287 lun->pr_res_idx = residx; /* Res holder */ 8288 else 8289 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8290 8291 lun->flags |= CTL_LUN_PR_RESERVED; 8292 lun->res_type = type; 8293 8294 mtx_unlock(&softc->ctl_lock); 8295 8296 /* send msg to other side */ 8297 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8298 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8299 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8300 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8301 persis_io.pr.pr_info.res_type = type; 8302 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8303 &persis_io, sizeof(persis_io), 0)) > 8304 CTL_HA_STATUS_SUCCESS) { 8305 printf("CTL:Persis Out error returned from " 8306 "ctl_ha_msg_send %d\n", isc_retval); 8307 } 8308 } 8309 break; 8310 8311 case SPRO_RELEASE: 8312 mtx_lock(&softc->ctl_lock); 8313 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8314 /* No reservation exists return good status */ 8315 mtx_unlock(&softc->ctl_lock); 8316 goto done; 8317 } 8318 /* 8319 * Is this nexus a reservation holder? 8320 */ 8321 if (lun->pr_res_idx != residx 8322 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8323 /* 8324 * not a res holder return good status but 8325 * do nothing 8326 */ 8327 mtx_unlock(&softc->ctl_lock); 8328 goto done; 8329 } 8330 8331 if (lun->res_type != type) { 8332 mtx_unlock(&softc->ctl_lock); 8333 free(ctsio->kern_data_ptr, M_CTL); 8334 ctl_set_illegal_pr_release(ctsio); 8335 ctl_done((union ctl_io *)ctsio); 8336 return (CTL_RETVAL_COMPLETE); 8337 } 8338 8339 /* okay to release */ 8340 lun->flags &= ~CTL_LUN_PR_RESERVED; 8341 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8342 lun->res_type = 0; 8343 8344 /* 8345 * if this isn't an exclusive access 8346 * res generate UA for all other 8347 * registrants. 8348 */ 8349 if (type != SPR_TYPE_EX_AC 8350 && type != SPR_TYPE_WR_EX) { 8351 /* 8352 * temporarily unregister so we don't generate UA 8353 */ 8354 lun->per_res[residx].registered = 0; 8355 8356 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8357 if (lun->per_res[i+persis_offset].registered 8358 == 0) 8359 continue; 8360 lun->pending_sense[i].ua_pending |= 8361 CTL_UA_RES_RELEASE; 8362 } 8363 8364 lun->per_res[residx].registered = 1; 8365 } 8366 mtx_unlock(&softc->ctl_lock); 8367 /* Send msg to other side */ 8368 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8369 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8370 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8371 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8372 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8373 printf("CTL:Persis Out error returned from " 8374 "ctl_ha_msg_send %d\n", isc_retval); 8375 } 8376 break; 8377 8378 case SPRO_CLEAR: 8379 /* send msg to other side */ 8380 8381 mtx_lock(&softc->ctl_lock); 8382 lun->flags &= ~CTL_LUN_PR_RESERVED; 8383 lun->res_type = 0; 8384 lun->pr_key_count = 0; 8385 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8386 8387 8388 memset(&lun->per_res[residx].res_key, 8389 0, sizeof(lun->per_res[residx].res_key)); 8390 lun->per_res[residx].registered = 0; 8391 8392 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8393 if (lun->per_res[i].registered) { 8394 if (!persis_offset && i < CTL_MAX_INITIATORS) 8395 lun->pending_sense[i].ua_pending |= 8396 CTL_UA_RES_PREEMPT; 8397 else if (persis_offset && i >= persis_offset) 8398 lun->pending_sense[i-persis_offset 8399 ].ua_pending |= CTL_UA_RES_PREEMPT; 8400 8401 memset(&lun->per_res[i].res_key, 8402 0, sizeof(struct scsi_per_res_key)); 8403 lun->per_res[i].registered = 0; 8404 } 8405 lun->PRGeneration++; 8406 mtx_unlock(&softc->ctl_lock); 8407 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8408 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8409 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8410 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8411 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8412 printf("CTL:Persis Out error returned from " 8413 "ctl_ha_msg_send %d\n", isc_retval); 8414 } 8415 break; 8416 8417 case SPRO_PREEMPT: { 8418 int nretval; 8419 8420 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8421 residx, ctsio, cdb, param); 8422 if (nretval != 0) 8423 return (CTL_RETVAL_COMPLETE); 8424 break; 8425 } 8426 case SPRO_REG_MOVE: 8427 case SPRO_PRE_ABO: 8428 default: 8429 free(ctsio->kern_data_ptr, M_CTL); 8430 ctl_set_invalid_field(/*ctsio*/ ctsio, 8431 /*sks_valid*/ 1, 8432 /*command*/ 1, 8433 /*field*/ 1, 8434 /*bit_valid*/ 1, 8435 /*bit*/ 0); 8436 ctl_done((union ctl_io *)ctsio); 8437 return (CTL_RETVAL_COMPLETE); 8438 break; /* NOTREACHED */ 8439 } 8440 8441done: 8442 free(ctsio->kern_data_ptr, M_CTL); 8443 ctl_set_success(ctsio); 8444 ctl_done((union ctl_io *)ctsio); 8445 8446 return (retval); 8447} 8448 8449/* 8450 * This routine is for handling a message from the other SC pertaining to 8451 * persistent reserve out. All the error checking will have been done 8452 * so only perorming the action need be done here to keep the two 8453 * in sync. 8454 */ 8455static void 8456ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8457{ 8458 struct ctl_lun *lun; 8459 struct ctl_softc *softc; 8460 int i; 8461 uint32_t targ_lun; 8462 8463 softc = control_softc; 8464 8465 mtx_lock(&softc->ctl_lock); 8466 8467 targ_lun = msg->hdr.nexus.targ_lun; 8468 if (msg->hdr.nexus.lun_map_fn != NULL) 8469 targ_lun = msg->hdr.nexus.lun_map_fn(msg->hdr.nexus.lun_map_arg, targ_lun); 8470 lun = softc->ctl_luns[targ_lun]; 8471 switch(msg->pr.pr_info.action) { 8472 case CTL_PR_REG_KEY: 8473 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8474 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8475 lun->pr_key_count++; 8476 } 8477 lun->PRGeneration++; 8478 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8479 msg->pr.pr_info.sa_res_key, 8480 sizeof(struct scsi_per_res_key)); 8481 break; 8482 8483 case CTL_PR_UNREG_KEY: 8484 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8485 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8486 0, sizeof(struct scsi_per_res_key)); 8487 lun->pr_key_count--; 8488 8489 /* XXX Need to see if the reservation has been released */ 8490 /* if so do we need to generate UA? */ 8491 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8492 lun->flags &= ~CTL_LUN_PR_RESERVED; 8493 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8494 8495 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8496 || lun->res_type == SPR_TYPE_EX_AC_RO) 8497 && lun->pr_key_count) { 8498 /* 8499 * If the reservation is a registrants 8500 * only type we need to generate a UA 8501 * for other registered inits. The 8502 * sense code should be RESERVATIONS 8503 * RELEASED 8504 */ 8505 8506 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8507 if (lun->per_res[i+ 8508 persis_offset].registered == 0) 8509 continue; 8510 8511 lun->pending_sense[i 8512 ].ua_pending |= 8513 CTL_UA_RES_RELEASE; 8514 } 8515 } 8516 lun->res_type = 0; 8517 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8518 if (lun->pr_key_count==0) { 8519 lun->flags &= ~CTL_LUN_PR_RESERVED; 8520 lun->res_type = 0; 8521 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8522 } 8523 } 8524 lun->PRGeneration++; 8525 break; 8526 8527 case CTL_PR_RESERVE: 8528 lun->flags |= CTL_LUN_PR_RESERVED; 8529 lun->res_type = msg->pr.pr_info.res_type; 8530 lun->pr_res_idx = msg->pr.pr_info.residx; 8531 8532 break; 8533 8534 case CTL_PR_RELEASE: 8535 /* 8536 * if this isn't an exclusive access res generate UA for all 8537 * other registrants. 8538 */ 8539 if (lun->res_type != SPR_TYPE_EX_AC 8540 && lun->res_type != SPR_TYPE_WR_EX) { 8541 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8542 if (lun->per_res[i+persis_offset].registered) 8543 lun->pending_sense[i].ua_pending |= 8544 CTL_UA_RES_RELEASE; 8545 } 8546 8547 lun->flags &= ~CTL_LUN_PR_RESERVED; 8548 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8549 lun->res_type = 0; 8550 break; 8551 8552 case CTL_PR_PREEMPT: 8553 ctl_pro_preempt_other(lun, msg); 8554 break; 8555 case CTL_PR_CLEAR: 8556 lun->flags &= ~CTL_LUN_PR_RESERVED; 8557 lun->res_type = 0; 8558 lun->pr_key_count = 0; 8559 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8560 8561 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8562 if (lun->per_res[i].registered == 0) 8563 continue; 8564 if (!persis_offset 8565 && i < CTL_MAX_INITIATORS) 8566 lun->pending_sense[i].ua_pending |= 8567 CTL_UA_RES_PREEMPT; 8568 else if (persis_offset 8569 && i >= persis_offset) 8570 lun->pending_sense[i-persis_offset].ua_pending|= 8571 CTL_UA_RES_PREEMPT; 8572 memset(&lun->per_res[i].res_key, 0, 8573 sizeof(struct scsi_per_res_key)); 8574 lun->per_res[i].registered = 0; 8575 } 8576 lun->PRGeneration++; 8577 break; 8578 } 8579 8580 mtx_unlock(&softc->ctl_lock); 8581} 8582 8583int 8584ctl_read_write(struct ctl_scsiio *ctsio) 8585{ 8586 struct ctl_lun *lun; 8587 struct ctl_lba_len lbalen; 8588 uint64_t lba; 8589 uint32_t num_blocks; 8590 int reladdr, fua, dpo, ebp; 8591 int retval; 8592 int isread; 8593 8594 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8595 8596 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8597 8598 reladdr = 0; 8599 fua = 0; 8600 dpo = 0; 8601 ebp = 0; 8602 8603 retval = CTL_RETVAL_COMPLETE; 8604 8605 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8606 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8607 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8608 uint32_t residx; 8609 8610 /* 8611 * XXX KDM need a lock here. 8612 */ 8613 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8614 if ((lun->res_type == SPR_TYPE_EX_AC 8615 && residx != lun->pr_res_idx) 8616 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8617 || lun->res_type == SPR_TYPE_EX_AC_AR) 8618 && !lun->per_res[residx].registered)) { 8619 ctl_set_reservation_conflict(ctsio); 8620 ctl_done((union ctl_io *)ctsio); 8621 return (CTL_RETVAL_COMPLETE); 8622 } 8623 } 8624 8625 switch (ctsio->cdb[0]) { 8626 case READ_6: 8627 case WRITE_6: { 8628 struct scsi_rw_6 *cdb; 8629 8630 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8631 8632 lba = scsi_3btoul(cdb->addr); 8633 /* only 5 bits are valid in the most significant address byte */ 8634 lba &= 0x1fffff; 8635 num_blocks = cdb->length; 8636 /* 8637 * This is correct according to SBC-2. 8638 */ 8639 if (num_blocks == 0) 8640 num_blocks = 256; 8641 break; 8642 } 8643 case READ_10: 8644 case WRITE_10: { 8645 struct scsi_rw_10 *cdb; 8646 8647 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8648 8649 if (cdb->byte2 & SRW10_RELADDR) 8650 reladdr = 1; 8651 if (cdb->byte2 & SRW10_FUA) 8652 fua = 1; 8653 if (cdb->byte2 & SRW10_DPO) 8654 dpo = 1; 8655 8656 if ((cdb->opcode == WRITE_10) 8657 && (cdb->byte2 & SRW10_EBP)) 8658 ebp = 1; 8659 8660 lba = scsi_4btoul(cdb->addr); 8661 num_blocks = scsi_2btoul(cdb->length); 8662 break; 8663 } 8664 case WRITE_VERIFY_10: { 8665 struct scsi_write_verify_10 *cdb; 8666 8667 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8668 8669 /* 8670 * XXX KDM we should do actual write verify support at some 8671 * point. This is obviously fake, we're just translating 8672 * things to a write. So we don't even bother checking the 8673 * BYTCHK field, since we don't do any verification. If 8674 * the user asks for it, we'll just pretend we did it. 8675 */ 8676 if (cdb->byte2 & SWV_DPO) 8677 dpo = 1; 8678 8679 lba = scsi_4btoul(cdb->addr); 8680 num_blocks = scsi_2btoul(cdb->length); 8681 break; 8682 } 8683 case READ_12: 8684 case WRITE_12: { 8685 struct scsi_rw_12 *cdb; 8686 8687 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8688 8689 if (cdb->byte2 & SRW12_RELADDR) 8690 reladdr = 1; 8691 if (cdb->byte2 & SRW12_FUA) 8692 fua = 1; 8693 if (cdb->byte2 & SRW12_DPO) 8694 dpo = 1; 8695 lba = scsi_4btoul(cdb->addr); 8696 num_blocks = scsi_4btoul(cdb->length); 8697 break; 8698 } 8699 case WRITE_VERIFY_12: { 8700 struct scsi_write_verify_12 *cdb; 8701 8702 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8703 8704 if (cdb->byte2 & SWV_DPO) 8705 dpo = 1; 8706 8707 lba = scsi_4btoul(cdb->addr); 8708 num_blocks = scsi_4btoul(cdb->length); 8709 8710 break; 8711 } 8712 case READ_16: 8713 case WRITE_16: { 8714 struct scsi_rw_16 *cdb; 8715 8716 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8717 8718 if (cdb->byte2 & SRW12_RELADDR) 8719 reladdr = 1; 8720 if (cdb->byte2 & SRW12_FUA) 8721 fua = 1; 8722 if (cdb->byte2 & SRW12_DPO) 8723 dpo = 1; 8724 8725 lba = scsi_8btou64(cdb->addr); 8726 num_blocks = scsi_4btoul(cdb->length); 8727 break; 8728 } 8729 case WRITE_VERIFY_16: { 8730 struct scsi_write_verify_16 *cdb; 8731 8732 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8733 8734 if (cdb->byte2 & SWV_DPO) 8735 dpo = 1; 8736 8737 lba = scsi_8btou64(cdb->addr); 8738 num_blocks = scsi_4btoul(cdb->length); 8739 break; 8740 } 8741 default: 8742 /* 8743 * We got a command we don't support. This shouldn't 8744 * happen, commands should be filtered out above us. 8745 */ 8746 ctl_set_invalid_opcode(ctsio); 8747 ctl_done((union ctl_io *)ctsio); 8748 8749 return (CTL_RETVAL_COMPLETE); 8750 break; /* NOTREACHED */ 8751 } 8752 8753 /* 8754 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8755 * interesting for us, but if RAIDCore is in write-back mode, 8756 * getting it to do write-through for a particular transaction may 8757 * not be possible. 8758 */ 8759 /* 8760 * We don't support relative addressing. That also requires 8761 * supporting linked commands, which we don't do. 8762 */ 8763 if (reladdr != 0) { 8764 ctl_set_invalid_field(ctsio, 8765 /*sks_valid*/ 1, 8766 /*command*/ 1, 8767 /*field*/ 1, 8768 /*bit_valid*/ 1, 8769 /*bit*/ 0); 8770 ctl_done((union ctl_io *)ctsio); 8771 return (CTL_RETVAL_COMPLETE); 8772 } 8773 8774 /* 8775 * The first check is to make sure we're in bounds, the second 8776 * check is to catch wrap-around problems. If the lba + num blocks 8777 * is less than the lba, then we've wrapped around and the block 8778 * range is invalid anyway. 8779 */ 8780 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8781 || ((lba + num_blocks) < lba)) { 8782 ctl_set_lba_out_of_range(ctsio); 8783 ctl_done((union ctl_io *)ctsio); 8784 return (CTL_RETVAL_COMPLETE); 8785 } 8786 8787 /* 8788 * According to SBC-3, a transfer length of 0 is not an error. 8789 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8790 * translates to 256 blocks for those commands. 8791 */ 8792 if (num_blocks == 0) { 8793 ctl_set_success(ctsio); 8794 ctl_done((union ctl_io *)ctsio); 8795 return (CTL_RETVAL_COMPLETE); 8796 } 8797 8798 lbalen.lba = lba; 8799 lbalen.len = num_blocks; 8800 memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &lbalen, 8801 sizeof(lbalen)); 8802 8803 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8804 8805 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8806 8807 return (retval); 8808} 8809 8810int 8811ctl_report_luns(struct ctl_scsiio *ctsio) 8812{ 8813 struct scsi_report_luns *cdb; 8814 struct scsi_report_luns_data *lun_data; 8815 struct ctl_lun *lun, *request_lun; 8816 int num_luns, retval; 8817 uint32_t alloc_len, lun_datalen; 8818 int num_filled, well_known; 8819 uint32_t initidx, targ_lun_id, lun_id; 8820 8821 retval = CTL_RETVAL_COMPLETE; 8822 well_known = 0; 8823 8824 cdb = (struct scsi_report_luns *)ctsio->cdb; 8825 8826 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 8827 8828 mtx_lock(&control_softc->ctl_lock); 8829 num_luns = control_softc->num_luns; 8830 mtx_unlock(&control_softc->ctl_lock); 8831 8832 switch (cdb->select_report) { 8833 case RPL_REPORT_DEFAULT: 8834 case RPL_REPORT_ALL: 8835 break; 8836 case RPL_REPORT_WELLKNOWN: 8837 well_known = 1; 8838 num_luns = 0; 8839 break; 8840 default: 8841 ctl_set_invalid_field(ctsio, 8842 /*sks_valid*/ 1, 8843 /*command*/ 1, 8844 /*field*/ 2, 8845 /*bit_valid*/ 0, 8846 /*bit*/ 0); 8847 ctl_done((union ctl_io *)ctsio); 8848 return (retval); 8849 break; /* NOTREACHED */ 8850 } 8851 8852 alloc_len = scsi_4btoul(cdb->length); 8853 /* 8854 * The initiator has to allocate at least 16 bytes for this request, 8855 * so he can at least get the header and the first LUN. Otherwise 8856 * we reject the request (per SPC-3 rev 14, section 6.21). 8857 */ 8858 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 8859 sizeof(struct scsi_report_luns_lundata))) { 8860 ctl_set_invalid_field(ctsio, 8861 /*sks_valid*/ 1, 8862 /*command*/ 1, 8863 /*field*/ 6, 8864 /*bit_valid*/ 0, 8865 /*bit*/ 0); 8866 ctl_done((union ctl_io *)ctsio); 8867 return (retval); 8868 } 8869 8870 request_lun = (struct ctl_lun *) 8871 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8872 8873 lun_datalen = sizeof(*lun_data) + 8874 (num_luns * sizeof(struct scsi_report_luns_lundata)); 8875 8876 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 8877 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 8878 ctsio->kern_sg_entries = 0; 8879 8880 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8881 8882 mtx_lock(&control_softc->ctl_lock); 8883 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 8884 lun_id = targ_lun_id; 8885 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 8886 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 8887 if (lun_id >= CTL_MAX_LUNS) 8888 continue; 8889 lun = control_softc->ctl_luns[lun_id]; 8890 if (lun == NULL) 8891 continue; 8892 8893 if (targ_lun_id <= 0xff) { 8894 /* 8895 * Peripheral addressing method, bus number 0. 8896 */ 8897 lun_data->luns[num_filled].lundata[0] = 8898 RPL_LUNDATA_ATYP_PERIPH; 8899 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 8900 num_filled++; 8901 } else if (targ_lun_id <= 0x3fff) { 8902 /* 8903 * Flat addressing method. 8904 */ 8905 lun_data->luns[num_filled].lundata[0] = 8906 RPL_LUNDATA_ATYP_FLAT | 8907 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 8908#ifdef OLDCTLHEADERS 8909 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 8910 (targ_lun_id & SRLD_BUS_LUN_MASK); 8911#endif 8912 lun_data->luns[num_filled].lundata[1] = 8913#ifdef OLDCTLHEADERS 8914 targ_lun_id >> SRLD_BUS_LUN_BITS; 8915#endif 8916 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 8917 num_filled++; 8918 } else { 8919 printf("ctl_report_luns: bogus LUN number %jd, " 8920 "skipping\n", (intmax_t)targ_lun_id); 8921 } 8922 /* 8923 * According to SPC-3, rev 14 section 6.21: 8924 * 8925 * "The execution of a REPORT LUNS command to any valid and 8926 * installed logical unit shall clear the REPORTED LUNS DATA 8927 * HAS CHANGED unit attention condition for all logical 8928 * units of that target with respect to the requesting 8929 * initiator. A valid and installed logical unit is one 8930 * having a PERIPHERAL QUALIFIER of 000b in the standard 8931 * INQUIRY data (see 6.4.2)." 8932 * 8933 * If request_lun is NULL, the LUN this report luns command 8934 * was issued to is either disabled or doesn't exist. In that 8935 * case, we shouldn't clear any pending lun change unit 8936 * attention. 8937 */ 8938 if (request_lun != NULL) 8939 lun->pending_sense[initidx].ua_pending &= 8940 ~CTL_UA_LUN_CHANGE; 8941 } 8942 mtx_unlock(&control_softc->ctl_lock); 8943 8944 /* 8945 * It's quite possible that we've returned fewer LUNs than we allocated 8946 * space for. Trim it. 8947 */ 8948 lun_datalen = sizeof(*lun_data) + 8949 (num_filled * sizeof(struct scsi_report_luns_lundata)); 8950 8951 if (lun_datalen < alloc_len) { 8952 ctsio->residual = alloc_len - lun_datalen; 8953 ctsio->kern_data_len = lun_datalen; 8954 ctsio->kern_total_len = lun_datalen; 8955 } else { 8956 ctsio->residual = 0; 8957 ctsio->kern_data_len = alloc_len; 8958 ctsio->kern_total_len = alloc_len; 8959 } 8960 ctsio->kern_data_resid = 0; 8961 ctsio->kern_rel_offset = 0; 8962 ctsio->kern_sg_entries = 0; 8963 8964 /* 8965 * We set this to the actual data length, regardless of how much 8966 * space we actually have to return results. If the user looks at 8967 * this value, he'll know whether or not he allocated enough space 8968 * and reissue the command if necessary. We don't support well 8969 * known logical units, so if the user asks for that, return none. 8970 */ 8971 scsi_ulto4b(lun_datalen - 8, lun_data->length); 8972 8973 /* 8974 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 8975 * this request. 8976 */ 8977 ctsio->scsi_status = SCSI_STATUS_OK; 8978 8979 ctsio->be_move_done = ctl_config_move_done; 8980 ctl_datamove((union ctl_io *)ctsio); 8981 8982 return (retval); 8983} 8984 8985int 8986ctl_request_sense(struct ctl_scsiio *ctsio) 8987{ 8988 struct scsi_request_sense *cdb; 8989 struct scsi_sense_data *sense_ptr; 8990 struct ctl_lun *lun; 8991 uint32_t initidx; 8992 int have_error; 8993 scsi_sense_data_type sense_format; 8994 8995 cdb = (struct scsi_request_sense *)ctsio->cdb; 8996 8997 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8998 8999 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9000 9001 /* 9002 * Determine which sense format the user wants. 9003 */ 9004 if (cdb->byte2 & SRS_DESC) 9005 sense_format = SSD_TYPE_DESC; 9006 else 9007 sense_format = SSD_TYPE_FIXED; 9008 9009 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9010 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9011 ctsio->kern_sg_entries = 0; 9012 9013 /* 9014 * struct scsi_sense_data, which is currently set to 256 bytes, is 9015 * larger than the largest allowed value for the length field in the 9016 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9017 */ 9018 ctsio->residual = 0; 9019 ctsio->kern_data_len = cdb->length; 9020 ctsio->kern_total_len = cdb->length; 9021 9022 ctsio->kern_data_resid = 0; 9023 ctsio->kern_rel_offset = 0; 9024 ctsio->kern_sg_entries = 0; 9025 9026 /* 9027 * If we don't have a LUN, we don't have any pending sense. 9028 */ 9029 if (lun == NULL) 9030 goto no_sense; 9031 9032 have_error = 0; 9033 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9034 /* 9035 * Check for pending sense, and then for pending unit attentions. 9036 * Pending sense gets returned first, then pending unit attentions. 9037 */ 9038 mtx_lock(&lun->ctl_softc->ctl_lock); 9039 if (ctl_is_set(lun->have_ca, initidx)) { 9040 scsi_sense_data_type stored_format; 9041 9042 /* 9043 * Check to see which sense format was used for the stored 9044 * sense data. 9045 */ 9046 stored_format = scsi_sense_type( 9047 &lun->pending_sense[initidx].sense); 9048 9049 /* 9050 * If the user requested a different sense format than the 9051 * one we stored, then we need to convert it to the other 9052 * format. If we're going from descriptor to fixed format 9053 * sense data, we may lose things in translation, depending 9054 * on what options were used. 9055 * 9056 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9057 * for some reason we'll just copy it out as-is. 9058 */ 9059 if ((stored_format == SSD_TYPE_FIXED) 9060 && (sense_format == SSD_TYPE_DESC)) 9061 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9062 &lun->pending_sense[initidx].sense, 9063 (struct scsi_sense_data_desc *)sense_ptr); 9064 else if ((stored_format == SSD_TYPE_DESC) 9065 && (sense_format == SSD_TYPE_FIXED)) 9066 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9067 &lun->pending_sense[initidx].sense, 9068 (struct scsi_sense_data_fixed *)sense_ptr); 9069 else 9070 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9071 ctl_min(sizeof(*sense_ptr), 9072 sizeof(lun->pending_sense[initidx].sense))); 9073 9074 ctl_clear_mask(lun->have_ca, initidx); 9075 have_error = 1; 9076 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9077 ctl_ua_type ua_type; 9078 9079 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9080 sense_ptr, sense_format); 9081 if (ua_type != CTL_UA_NONE) { 9082 have_error = 1; 9083 /* We're reporting this UA, so clear it */ 9084 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9085 } 9086 } 9087 mtx_unlock(&lun->ctl_softc->ctl_lock); 9088 9089 /* 9090 * We already have a pending error, return it. 9091 */ 9092 if (have_error != 0) { 9093 /* 9094 * We report the SCSI status as OK, since the status of the 9095 * request sense command itself is OK. 9096 */ 9097 ctsio->scsi_status = SCSI_STATUS_OK; 9098 9099 /* 9100 * We report 0 for the sense length, because we aren't doing 9101 * autosense in this case. We're reporting sense as 9102 * parameter data. 9103 */ 9104 ctsio->sense_len = 0; 9105 9106 ctsio->be_move_done = ctl_config_move_done; 9107 ctl_datamove((union ctl_io *)ctsio); 9108 9109 return (CTL_RETVAL_COMPLETE); 9110 } 9111 9112no_sense: 9113 9114 /* 9115 * No sense information to report, so we report that everything is 9116 * okay. 9117 */ 9118 ctl_set_sense_data(sense_ptr, 9119 lun, 9120 sense_format, 9121 /*current_error*/ 1, 9122 /*sense_key*/ SSD_KEY_NO_SENSE, 9123 /*asc*/ 0x00, 9124 /*ascq*/ 0x00, 9125 SSD_ELEM_NONE); 9126 9127 ctsio->scsi_status = SCSI_STATUS_OK; 9128 9129 /* 9130 * We report 0 for the sense length, because we aren't doing 9131 * autosense in this case. We're reporting sense as parameter data. 9132 */ 9133 ctsio->sense_len = 0; 9134 ctsio->be_move_done = ctl_config_move_done; 9135 ctl_datamove((union ctl_io *)ctsio); 9136 9137 return (CTL_RETVAL_COMPLETE); 9138} 9139 9140int 9141ctl_tur(struct ctl_scsiio *ctsio) 9142{ 9143 struct ctl_lun *lun; 9144 9145 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9146 9147 CTL_DEBUG_PRINT(("ctl_tur\n")); 9148 9149 if (lun == NULL) 9150 return (-EINVAL); 9151 9152 ctsio->scsi_status = SCSI_STATUS_OK; 9153 ctsio->io_hdr.status = CTL_SUCCESS; 9154 9155 ctl_done((union ctl_io *)ctsio); 9156 9157 return (CTL_RETVAL_COMPLETE); 9158} 9159 9160#ifdef notyet 9161static int 9162ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9163{ 9164 9165} 9166#endif 9167 9168static int 9169ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9170{ 9171 struct scsi_vpd_supported_pages *pages; 9172 int sup_page_size; 9173 struct ctl_lun *lun; 9174 9175 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9176 9177 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9178 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9179 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9180 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9181 ctsio->kern_sg_entries = 0; 9182 9183 if (sup_page_size < alloc_len) { 9184 ctsio->residual = alloc_len - sup_page_size; 9185 ctsio->kern_data_len = sup_page_size; 9186 ctsio->kern_total_len = sup_page_size; 9187 } else { 9188 ctsio->residual = 0; 9189 ctsio->kern_data_len = alloc_len; 9190 ctsio->kern_total_len = alloc_len; 9191 } 9192 ctsio->kern_data_resid = 0; 9193 ctsio->kern_rel_offset = 0; 9194 ctsio->kern_sg_entries = 0; 9195 9196 /* 9197 * The control device is always connected. The disk device, on the 9198 * other hand, may not be online all the time. Need to change this 9199 * to figure out whether the disk device is actually online or not. 9200 */ 9201 if (lun != NULL) 9202 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9203 lun->be_lun->lun_type; 9204 else 9205 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9206 9207 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9208 /* Supported VPD pages */ 9209 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9210 /* Serial Number */ 9211 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9212 /* Device Identification */ 9213 pages->page_list[2] = SVPD_DEVICE_ID; 9214 /* Block limits */ 9215 pages->page_list[3] = SVPD_BLOCK_LIMITS; 9216 /* Logical Block Provisioning */ 9217 pages->page_list[4] = SVPD_LBP; 9218 9219 ctsio->scsi_status = SCSI_STATUS_OK; 9220 9221 ctsio->be_move_done = ctl_config_move_done; 9222 ctl_datamove((union ctl_io *)ctsio); 9223 9224 return (CTL_RETVAL_COMPLETE); 9225} 9226 9227static int 9228ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9229{ 9230 struct scsi_vpd_unit_serial_number *sn_ptr; 9231 struct ctl_lun *lun; 9232#ifndef CTL_USE_BACKEND_SN 9233 char tmpstr[32]; 9234#endif 9235 9236 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9237 9238 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9239 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9240 ctsio->kern_sg_entries = 0; 9241 9242 if (sizeof(*sn_ptr) < alloc_len) { 9243 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9244 ctsio->kern_data_len = sizeof(*sn_ptr); 9245 ctsio->kern_total_len = sizeof(*sn_ptr); 9246 } else { 9247 ctsio->residual = 0; 9248 ctsio->kern_data_len = alloc_len; 9249 ctsio->kern_total_len = alloc_len; 9250 } 9251 ctsio->kern_data_resid = 0; 9252 ctsio->kern_rel_offset = 0; 9253 ctsio->kern_sg_entries = 0; 9254 9255 /* 9256 * The control device is always connected. The disk device, on the 9257 * other hand, may not be online all the time. Need to change this 9258 * to figure out whether the disk device is actually online or not. 9259 */ 9260 if (lun != NULL) 9261 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9262 lun->be_lun->lun_type; 9263 else 9264 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9265 9266 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9267 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9268#ifdef CTL_USE_BACKEND_SN 9269 /* 9270 * If we don't have a LUN, we just leave the serial number as 9271 * all spaces. 9272 */ 9273 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9274 if (lun != NULL) { 9275 strncpy((char *)sn_ptr->serial_num, 9276 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9277 } 9278#else 9279 /* 9280 * Note that we're using a non-unique serial number here, 9281 */ 9282 snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000"); 9283 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9284 strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN, 9285 ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4))); 9286#endif 9287 ctsio->scsi_status = SCSI_STATUS_OK; 9288 9289 ctsio->be_move_done = ctl_config_move_done; 9290 ctl_datamove((union ctl_io *)ctsio); 9291 9292 return (CTL_RETVAL_COMPLETE); 9293} 9294 9295 9296static int 9297ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9298{ 9299 struct scsi_vpd_device_id *devid_ptr; 9300 struct scsi_vpd_id_descriptor *desc, *desc1; 9301 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9302 struct scsi_vpd_id_t10 *t10id; 9303 struct ctl_softc *ctl_softc; 9304 struct ctl_lun *lun; 9305 struct ctl_frontend *fe; 9306#ifndef CTL_USE_BACKEND_SN 9307 char tmpstr[32]; 9308#endif /* CTL_USE_BACKEND_SN */ 9309 int devid_len; 9310 9311 ctl_softc = control_softc; 9312 9313 mtx_lock(&ctl_softc->ctl_lock); 9314 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9315 mtx_unlock(&ctl_softc->ctl_lock); 9316 9317 if (fe->devid != NULL) 9318 return ((fe->devid)(ctsio, alloc_len)); 9319 9320 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9321 9322 devid_len = sizeof(struct scsi_vpd_device_id) + 9323 sizeof(struct scsi_vpd_id_descriptor) + 9324 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 9325 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9326 sizeof(struct scsi_vpd_id_descriptor) + 9327 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9328 sizeof(struct scsi_vpd_id_descriptor) + 9329 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9330 9331 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 9332 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9333 ctsio->kern_sg_entries = 0; 9334 9335 if (devid_len < alloc_len) { 9336 ctsio->residual = alloc_len - devid_len; 9337 ctsio->kern_data_len = devid_len; 9338 ctsio->kern_total_len = devid_len; 9339 } else { 9340 ctsio->residual = 0; 9341 ctsio->kern_data_len = alloc_len; 9342 ctsio->kern_total_len = alloc_len; 9343 } 9344 ctsio->kern_data_resid = 0; 9345 ctsio->kern_rel_offset = 0; 9346 ctsio->kern_sg_entries = 0; 9347 9348 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9349 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9350 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9351 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 9352 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9353 CTL_WWPN_LEN); 9354 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9355 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9356 9357 /* 9358 * The control device is always connected. The disk device, on the 9359 * other hand, may not be online all the time. 9360 */ 9361 if (lun != NULL) 9362 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9363 lun->be_lun->lun_type; 9364 else 9365 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9366 9367 devid_ptr->page_code = SVPD_DEVICE_ID; 9368 9369 scsi_ulto2b(devid_len - 4, devid_ptr->length); 9370 9371 mtx_lock(&ctl_softc->ctl_lock); 9372 9373 /* 9374 * For Fibre channel, 9375 */ 9376 if (fe->port_type == CTL_PORT_FC) 9377 { 9378 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9379 SVPD_ID_CODESET_ASCII; 9380 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9381 SVPD_ID_CODESET_BINARY; 9382 } 9383 else 9384 { 9385 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9386 SVPD_ID_CODESET_ASCII; 9387 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9388 SVPD_ID_CODESET_BINARY; 9389 } 9390 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9391 mtx_unlock(&ctl_softc->ctl_lock); 9392 9393 /* 9394 * We're using a LUN association here. i.e., this device ID is a 9395 * per-LUN identifier. 9396 */ 9397 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9398 desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 9399 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9400 9401 /* 9402 * desc1 is for the WWPN which is a port asscociation. 9403 */ 9404 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9405 desc1->length = CTL_WWPN_LEN; 9406 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9407 /* For testing just create the WWPN */ 9408#if 0 9409 ddb_GetWWNN((char *)desc1->identifier); 9410 9411 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9412 /* This is so Copancontrol will return something sane */ 9413 if (ctsio->io_hdr.nexus.targ_port!=0 && 9414 ctsio->io_hdr.nexus.targ_port!=8) 9415 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9416 else 9417 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9418#endif 9419 9420 be64enc(desc1->identifier, fe->wwpn); 9421 9422 /* 9423 * desc2 is for the Relative Target Port(type 4h) identifier 9424 */ 9425 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9426 | SVPD_ID_TYPE_RELTARG; 9427 desc2->length = 4; 9428//#if 0 9429 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9430 /* This is so Copancontrol will return something sane */ 9431 if (ctsio->io_hdr.nexus.targ_port!=0 && 9432 ctsio->io_hdr.nexus.targ_port!=8) 9433 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9434 else 9435 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9436//#endif 9437 9438 /* 9439 * desc3 is for the Target Port Group(type 5h) identifier 9440 */ 9441 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9442 | SVPD_ID_TYPE_TPORTGRP; 9443 desc3->length = 4; 9444 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9445 desc3->identifier[3] = 1; 9446 else 9447 desc3->identifier[3] = 2; 9448 9449#ifdef CTL_USE_BACKEND_SN 9450 /* 9451 * If we've actually got a backend, copy the device id from the 9452 * per-LUN data. Otherwise, set it to all spaces. 9453 */ 9454 if (lun != NULL) { 9455 /* 9456 * Copy the backend's LUN ID. 9457 */ 9458 strncpy((char *)t10id->vendor_spec_id, 9459 (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 9460 } else { 9461 /* 9462 * No backend, set this to spaces. 9463 */ 9464 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 9465 } 9466#else 9467 snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d", 9468 (lun != NULL) ? (int)lun->lun : 0); 9469 strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN, 9470 sizeof(tmpstr))); 9471#endif 9472 9473 ctsio->scsi_status = SCSI_STATUS_OK; 9474 9475 ctsio->be_move_done = ctl_config_move_done; 9476 ctl_datamove((union ctl_io *)ctsio); 9477 9478 return (CTL_RETVAL_COMPLETE); 9479} 9480 9481static int 9482ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9483{ 9484 struct scsi_vpd_block_limits *bl_ptr; 9485 struct ctl_lun *lun; 9486 int bs; 9487 9488 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9489 bs = lun->be_lun->blocksize; 9490 9491 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9492 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9493 ctsio->kern_sg_entries = 0; 9494 9495 if (sizeof(*bl_ptr) < alloc_len) { 9496 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9497 ctsio->kern_data_len = sizeof(*bl_ptr); 9498 ctsio->kern_total_len = sizeof(*bl_ptr); 9499 } else { 9500 ctsio->residual = 0; 9501 ctsio->kern_data_len = alloc_len; 9502 ctsio->kern_total_len = alloc_len; 9503 } 9504 ctsio->kern_data_resid = 0; 9505 ctsio->kern_rel_offset = 0; 9506 ctsio->kern_sg_entries = 0; 9507 9508 /* 9509 * The control device is always connected. The disk device, on the 9510 * other hand, may not be online all the time. Need to change this 9511 * to figure out whether the disk device is actually online or not. 9512 */ 9513 if (lun != NULL) 9514 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9515 lun->be_lun->lun_type; 9516 else 9517 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9518 9519 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9520 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9521 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9522 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9523 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9524 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9525 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9526 } 9527 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9528 9529 ctsio->scsi_status = SCSI_STATUS_OK; 9530 ctsio->be_move_done = ctl_config_move_done; 9531 ctl_datamove((union ctl_io *)ctsio); 9532 9533 return (CTL_RETVAL_COMPLETE); 9534} 9535 9536static int 9537ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 9538{ 9539 struct scsi_vpd_logical_block_prov *lbp_ptr; 9540 struct ctl_lun *lun; 9541 int bs; 9542 9543 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9544 bs = lun->be_lun->blocksize; 9545 9546 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 9547 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 9548 ctsio->kern_sg_entries = 0; 9549 9550 if (sizeof(*lbp_ptr) < alloc_len) { 9551 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 9552 ctsio->kern_data_len = sizeof(*lbp_ptr); 9553 ctsio->kern_total_len = sizeof(*lbp_ptr); 9554 } else { 9555 ctsio->residual = 0; 9556 ctsio->kern_data_len = alloc_len; 9557 ctsio->kern_total_len = alloc_len; 9558 } 9559 ctsio->kern_data_resid = 0; 9560 ctsio->kern_rel_offset = 0; 9561 ctsio->kern_sg_entries = 0; 9562 9563 /* 9564 * The control device is always connected. The disk device, on the 9565 * other hand, may not be online all the time. Need to change this 9566 * to figure out whether the disk device is actually online or not. 9567 */ 9568 if (lun != NULL) 9569 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9570 lun->be_lun->lun_type; 9571 else 9572 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9573 9574 lbp_ptr->page_code = SVPD_LBP; 9575 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 9576 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 9577 9578 ctsio->scsi_status = SCSI_STATUS_OK; 9579 ctsio->be_move_done = ctl_config_move_done; 9580 ctl_datamove((union ctl_io *)ctsio); 9581 9582 return (CTL_RETVAL_COMPLETE); 9583} 9584 9585static int 9586ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9587{ 9588 struct scsi_inquiry *cdb; 9589 struct ctl_lun *lun; 9590 int alloc_len, retval; 9591 9592 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9593 cdb = (struct scsi_inquiry *)ctsio->cdb; 9594 9595 retval = CTL_RETVAL_COMPLETE; 9596 9597 alloc_len = scsi_2btoul(cdb->length); 9598 9599 switch (cdb->page_code) { 9600 case SVPD_SUPPORTED_PAGES: 9601 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9602 break; 9603 case SVPD_UNIT_SERIAL_NUMBER: 9604 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9605 break; 9606 case SVPD_DEVICE_ID: 9607 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9608 break; 9609 case SVPD_BLOCK_LIMITS: 9610 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 9611 break; 9612 case SVPD_LBP: 9613 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 9614 break; 9615 default: 9616 ctl_set_invalid_field(ctsio, 9617 /*sks_valid*/ 1, 9618 /*command*/ 1, 9619 /*field*/ 2, 9620 /*bit_valid*/ 0, 9621 /*bit*/ 0); 9622 ctl_done((union ctl_io *)ctsio); 9623 retval = CTL_RETVAL_COMPLETE; 9624 break; 9625 } 9626 9627 return (retval); 9628} 9629 9630static int 9631ctl_inquiry_std(struct ctl_scsiio *ctsio) 9632{ 9633 struct scsi_inquiry_data *inq_ptr; 9634 struct scsi_inquiry *cdb; 9635 struct ctl_softc *ctl_softc; 9636 struct ctl_lun *lun; 9637 uint32_t alloc_len; 9638 int is_fc; 9639 9640 ctl_softc = control_softc; 9641 9642 /* 9643 * Figure out whether we're talking to a Fibre Channel port or not. 9644 * We treat the ioctl front end, and any SCSI adapters, as packetized 9645 * SCSI front ends. 9646 */ 9647 mtx_lock(&ctl_softc->ctl_lock); 9648 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9649 CTL_PORT_FC) 9650 is_fc = 0; 9651 else 9652 is_fc = 1; 9653 mtx_unlock(&ctl_softc->ctl_lock); 9654 9655 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9656 cdb = (struct scsi_inquiry *)ctsio->cdb; 9657 alloc_len = scsi_2btoul(cdb->length); 9658 9659 /* 9660 * We malloc the full inquiry data size here and fill it 9661 * in. If the user only asks for less, we'll give him 9662 * that much. 9663 */ 9664 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9665 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9666 ctsio->kern_sg_entries = 0; 9667 ctsio->kern_data_resid = 0; 9668 ctsio->kern_rel_offset = 0; 9669 9670 if (sizeof(*inq_ptr) < alloc_len) { 9671 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9672 ctsio->kern_data_len = sizeof(*inq_ptr); 9673 ctsio->kern_total_len = sizeof(*inq_ptr); 9674 } else { 9675 ctsio->residual = 0; 9676 ctsio->kern_data_len = alloc_len; 9677 ctsio->kern_total_len = alloc_len; 9678 } 9679 9680 /* 9681 * If we have a LUN configured, report it as connected. Otherwise, 9682 * report that it is offline or no device is supported, depending 9683 * on the value of inquiry_pq_no_lun. 9684 * 9685 * According to the spec (SPC-4 r34), the peripheral qualifier 9686 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9687 * 9688 * "A peripheral device having the specified peripheral device type 9689 * is not connected to this logical unit. However, the device 9690 * server is capable of supporting the specified peripheral device 9691 * type on this logical unit." 9692 * 9693 * According to the same spec, the peripheral qualifier 9694 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9695 * 9696 * "The device server is not capable of supporting a peripheral 9697 * device on this logical unit. For this peripheral qualifier the 9698 * peripheral device type shall be set to 1Fh. All other peripheral 9699 * device type values are reserved for this peripheral qualifier." 9700 * 9701 * Given the text, it would seem that we probably want to report that 9702 * the LUN is offline here. There is no LUN connected, but we can 9703 * support a LUN at the given LUN number. 9704 * 9705 * In the real world, though, it sounds like things are a little 9706 * different: 9707 * 9708 * - Linux, when presented with a LUN with the offline peripheral 9709 * qualifier, will create an sg driver instance for it. So when 9710 * you attach it to CTL, you wind up with a ton of sg driver 9711 * instances. (One for every LUN that Linux bothered to probe.) 9712 * Linux does this despite the fact that it issues a REPORT LUNs 9713 * to LUN 0 to get the inventory of supported LUNs. 9714 * 9715 * - There is other anecdotal evidence (from Emulex folks) about 9716 * arrays that use the offline peripheral qualifier for LUNs that 9717 * are on the "passive" path in an active/passive array. 9718 * 9719 * So the solution is provide a hopefully reasonable default 9720 * (return bad/no LUN) and allow the user to change the behavior 9721 * with a tunable/sysctl variable. 9722 */ 9723 if (lun != NULL) 9724 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9725 lun->be_lun->lun_type; 9726 else if (ctl_softc->inquiry_pq_no_lun == 0) 9727 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9728 else 9729 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9730 9731 /* RMB in byte 2 is 0 */ 9732 inq_ptr->version = SCSI_REV_SPC3; 9733 9734 /* 9735 * According to SAM-3, even if a device only supports a single 9736 * level of LUN addressing, it should still set the HISUP bit: 9737 * 9738 * 4.9.1 Logical unit numbers overview 9739 * 9740 * All logical unit number formats described in this standard are 9741 * hierarchical in structure even when only a single level in that 9742 * hierarchy is used. The HISUP bit shall be set to one in the 9743 * standard INQUIRY data (see SPC-2) when any logical unit number 9744 * format described in this standard is used. Non-hierarchical 9745 * formats are outside the scope of this standard. 9746 * 9747 * Therefore we set the HiSup bit here. 9748 * 9749 * The reponse format is 2, per SPC-3. 9750 */ 9751 inq_ptr->response_format = SID_HiSup | 2; 9752 9753 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9754 CTL_DEBUG_PRINT(("additional_length = %d\n", 9755 inq_ptr->additional_length)); 9756 9757 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9758 /* 16 bit addressing */ 9759 if (is_fc == 0) 9760 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9761 /* XXX set the SID_MultiP bit here if we're actually going to 9762 respond on multiple ports */ 9763 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9764 9765 /* 16 bit data bus, synchronous transfers */ 9766 /* XXX these flags don't apply for FC */ 9767 if (is_fc == 0) 9768 inq_ptr->flags = SID_WBus16 | SID_Sync; 9769 /* 9770 * XXX KDM do we want to support tagged queueing on the control 9771 * device at all? 9772 */ 9773 if ((lun == NULL) 9774 || (lun->be_lun->lun_type != T_PROCESSOR)) 9775 inq_ptr->flags |= SID_CmdQue; 9776 /* 9777 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 9778 * We have 8 bytes for the vendor name, and 16 bytes for the device 9779 * name and 4 bytes for the revision. 9780 */ 9781 strncpy(inq_ptr->vendor, CTL_VENDOR, sizeof(inq_ptr->vendor)); 9782 if (lun == NULL) { 9783 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9784 } else { 9785 switch (lun->be_lun->lun_type) { 9786 case T_DIRECT: 9787 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9788 break; 9789 case T_PROCESSOR: 9790 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 9791 break; 9792 default: 9793 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 9794 break; 9795 } 9796 } 9797 9798 /* 9799 * XXX make this a macro somewhere so it automatically gets 9800 * incremented when we make changes. 9801 */ 9802 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 9803 9804 /* 9805 * For parallel SCSI, we support double transition and single 9806 * transition clocking. We also support QAS (Quick Arbitration 9807 * and Selection) and Information Unit transfers on both the 9808 * control and array devices. 9809 */ 9810 if (is_fc == 0) 9811 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 9812 SID_SPI_IUS; 9813 9814 /* SAM-3 */ 9815 scsi_ulto2b(0x0060, inq_ptr->version1); 9816 /* SPC-3 (no version claimed) XXX should we claim a version? */ 9817 scsi_ulto2b(0x0300, inq_ptr->version2); 9818 if (is_fc) { 9819 /* FCP-2 ANSI INCITS.350:2003 */ 9820 scsi_ulto2b(0x0917, inq_ptr->version3); 9821 } else { 9822 /* SPI-4 ANSI INCITS.362:200x */ 9823 scsi_ulto2b(0x0B56, inq_ptr->version3); 9824 } 9825 9826 if (lun == NULL) { 9827 /* SBC-2 (no version claimed) XXX should we claim a version? */ 9828 scsi_ulto2b(0x0320, inq_ptr->version4); 9829 } else { 9830 switch (lun->be_lun->lun_type) { 9831 case T_DIRECT: 9832 /* 9833 * SBC-2 (no version claimed) XXX should we claim a 9834 * version? 9835 */ 9836 scsi_ulto2b(0x0320, inq_ptr->version4); 9837 break; 9838 case T_PROCESSOR: 9839 default: 9840 break; 9841 } 9842 } 9843 9844 ctsio->scsi_status = SCSI_STATUS_OK; 9845 if (ctsio->kern_data_len > 0) { 9846 ctsio->be_move_done = ctl_config_move_done; 9847 ctl_datamove((union ctl_io *)ctsio); 9848 } else { 9849 ctsio->io_hdr.status = CTL_SUCCESS; 9850 ctl_done((union ctl_io *)ctsio); 9851 } 9852 9853 return (CTL_RETVAL_COMPLETE); 9854} 9855 9856int 9857ctl_inquiry(struct ctl_scsiio *ctsio) 9858{ 9859 struct scsi_inquiry *cdb; 9860 int retval; 9861 9862 cdb = (struct scsi_inquiry *)ctsio->cdb; 9863 9864 retval = 0; 9865 9866 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 9867 9868 /* 9869 * Right now, we don't support the CmdDt inquiry information. 9870 * This would be nice to support in the future. When we do 9871 * support it, we should change this test so that it checks to make 9872 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 9873 */ 9874#ifdef notyet 9875 if (((cdb->byte2 & SI_EVPD) 9876 && (cdb->byte2 & SI_CMDDT))) 9877#endif 9878 if (cdb->byte2 & SI_CMDDT) { 9879 /* 9880 * Point to the SI_CMDDT bit. We might change this 9881 * when we support SI_CMDDT, but since both bits would be 9882 * "wrong", this should probably just stay as-is then. 9883 */ 9884 ctl_set_invalid_field(ctsio, 9885 /*sks_valid*/ 1, 9886 /*command*/ 1, 9887 /*field*/ 1, 9888 /*bit_valid*/ 1, 9889 /*bit*/ 1); 9890 ctl_done((union ctl_io *)ctsio); 9891 return (CTL_RETVAL_COMPLETE); 9892 } 9893 if (cdb->byte2 & SI_EVPD) 9894 retval = ctl_inquiry_evpd(ctsio); 9895#ifdef notyet 9896 else if (cdb->byte2 & SI_CMDDT) 9897 retval = ctl_inquiry_cmddt(ctsio); 9898#endif 9899 else 9900 retval = ctl_inquiry_std(ctsio); 9901 9902 return (retval); 9903} 9904 9905/* 9906 * For known CDB types, parse the LBA and length. 9907 */ 9908static int 9909ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 9910{ 9911 if (io->io_hdr.io_type != CTL_IO_SCSI) 9912 return (1); 9913 9914 switch (io->scsiio.cdb[0]) { 9915 case READ_6: 9916 case WRITE_6: { 9917 struct scsi_rw_6 *cdb; 9918 9919 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 9920 9921 *lba = scsi_3btoul(cdb->addr); 9922 /* only 5 bits are valid in the most significant address byte */ 9923 *lba &= 0x1fffff; 9924 *len = cdb->length; 9925 break; 9926 } 9927 case READ_10: 9928 case WRITE_10: { 9929 struct scsi_rw_10 *cdb; 9930 9931 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 9932 9933 *lba = scsi_4btoul(cdb->addr); 9934 *len = scsi_2btoul(cdb->length); 9935 break; 9936 } 9937 case WRITE_VERIFY_10: { 9938 struct scsi_write_verify_10 *cdb; 9939 9940 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 9941 9942 *lba = scsi_4btoul(cdb->addr); 9943 *len = scsi_2btoul(cdb->length); 9944 break; 9945 } 9946 case READ_12: 9947 case WRITE_12: { 9948 struct scsi_rw_12 *cdb; 9949 9950 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 9951 9952 *lba = scsi_4btoul(cdb->addr); 9953 *len = scsi_4btoul(cdb->length); 9954 break; 9955 } 9956 case WRITE_VERIFY_12: { 9957 struct scsi_write_verify_12 *cdb; 9958 9959 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 9960 9961 *lba = scsi_4btoul(cdb->addr); 9962 *len = scsi_4btoul(cdb->length); 9963 break; 9964 } 9965 case READ_16: 9966 case WRITE_16: { 9967 struct scsi_rw_16 *cdb; 9968 9969 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 9970 9971 *lba = scsi_8btou64(cdb->addr); 9972 *len = scsi_4btoul(cdb->length); 9973 break; 9974 } 9975 case WRITE_VERIFY_16: { 9976 struct scsi_write_verify_16 *cdb; 9977 9978 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 9979 9980 9981 *lba = scsi_8btou64(cdb->addr); 9982 *len = scsi_4btoul(cdb->length); 9983 break; 9984 } 9985 case WRITE_SAME_10: { 9986 struct scsi_write_same_10 *cdb; 9987 9988 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 9989 9990 *lba = scsi_4btoul(cdb->addr); 9991 *len = scsi_2btoul(cdb->length); 9992 break; 9993 } 9994 case WRITE_SAME_16: { 9995 struct scsi_write_same_16 *cdb; 9996 9997 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 9998 9999 *lba = scsi_8btou64(cdb->addr); 10000 *len = scsi_4btoul(cdb->length); 10001 break; 10002 } 10003 default: 10004 return (1); 10005 break; /* NOTREACHED */ 10006 } 10007 10008 return (0); 10009} 10010 10011static ctl_action 10012ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10013{ 10014 uint64_t endlba1, endlba2; 10015 10016 endlba1 = lba1 + len1 - 1; 10017 endlba2 = lba2 + len2 - 1; 10018 10019 if ((endlba1 < lba2) 10020 || (endlba2 < lba1)) 10021 return (CTL_ACTION_PASS); 10022 else 10023 return (CTL_ACTION_BLOCK); 10024} 10025 10026static ctl_action 10027ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10028{ 10029 uint64_t lba1, lba2; 10030 uint32_t len1, len2; 10031 int retval; 10032 10033 retval = ctl_get_lba_len(io1, &lba1, &len1); 10034 if (retval != 0) 10035 return (CTL_ACTION_ERROR); 10036 10037 retval = ctl_get_lba_len(io2, &lba2, &len2); 10038 if (retval != 0) 10039 return (CTL_ACTION_ERROR); 10040 10041 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10042} 10043 10044static ctl_action 10045ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10046{ 10047 struct ctl_cmd_entry *pending_entry, *ooa_entry; 10048 ctl_serialize_action *serialize_row; 10049 10050 /* 10051 * The initiator attempted multiple untagged commands at the same 10052 * time. Can't do that. 10053 */ 10054 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10055 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10056 && ((pending_io->io_hdr.nexus.targ_port == 10057 ooa_io->io_hdr.nexus.targ_port) 10058 && (pending_io->io_hdr.nexus.initid.id == 10059 ooa_io->io_hdr.nexus.initid.id)) 10060 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10061 return (CTL_ACTION_OVERLAP); 10062 10063 /* 10064 * The initiator attempted to send multiple tagged commands with 10065 * the same ID. (It's fine if different initiators have the same 10066 * tag ID.) 10067 * 10068 * Even if all of those conditions are true, we don't kill the I/O 10069 * if the command ahead of us has been aborted. We won't end up 10070 * sending it to the FETD, and it's perfectly legal to resend a 10071 * command with the same tag number as long as the previous 10072 * instance of this tag number has been aborted somehow. 10073 */ 10074 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10075 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10076 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10077 && ((pending_io->io_hdr.nexus.targ_port == 10078 ooa_io->io_hdr.nexus.targ_port) 10079 && (pending_io->io_hdr.nexus.initid.id == 10080 ooa_io->io_hdr.nexus.initid.id)) 10081 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10082 return (CTL_ACTION_OVERLAP_TAG); 10083 10084 /* 10085 * If we get a head of queue tag, SAM-3 says that we should 10086 * immediately execute it. 10087 * 10088 * What happens if this command would normally block for some other 10089 * reason? e.g. a request sense with a head of queue tag 10090 * immediately after a write. Normally that would block, but this 10091 * will result in its getting executed immediately... 10092 * 10093 * We currently return "pass" instead of "skip", so we'll end up 10094 * going through the rest of the queue to check for overlapped tags. 10095 * 10096 * XXX KDM check for other types of blockage first?? 10097 */ 10098 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10099 return (CTL_ACTION_PASS); 10100 10101 /* 10102 * Ordered tags have to block until all items ahead of them 10103 * have completed. If we get called with an ordered tag, we always 10104 * block, if something else is ahead of us in the queue. 10105 */ 10106 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10107 return (CTL_ACTION_BLOCK); 10108 10109 /* 10110 * Simple tags get blocked until all head of queue and ordered tags 10111 * ahead of them have completed. I'm lumping untagged commands in 10112 * with simple tags here. XXX KDM is that the right thing to do? 10113 */ 10114 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10115 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10116 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10117 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10118 return (CTL_ACTION_BLOCK); 10119 10120 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 10121 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 10122 10123 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10124 10125 switch (serialize_row[pending_entry->seridx]) { 10126 case CTL_SER_BLOCK: 10127 return (CTL_ACTION_BLOCK); 10128 break; /* NOTREACHED */ 10129 case CTL_SER_EXTENT: 10130 return (ctl_extent_check(pending_io, ooa_io)); 10131 break; /* NOTREACHED */ 10132 case CTL_SER_PASS: 10133 return (CTL_ACTION_PASS); 10134 break; /* NOTREACHED */ 10135 case CTL_SER_SKIP: 10136 return (CTL_ACTION_SKIP); 10137 break; 10138 default: 10139 panic("invalid serialization value %d", 10140 serialize_row[pending_entry->seridx]); 10141 break; /* NOTREACHED */ 10142 } 10143 10144 return (CTL_ACTION_ERROR); 10145} 10146 10147/* 10148 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10149 * Assumptions: 10150 * - pending_io is generally either incoming, or on the blocked queue 10151 * - starting I/O is the I/O we want to start the check with. 10152 */ 10153static ctl_action 10154ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10155 union ctl_io *starting_io) 10156{ 10157 union ctl_io *ooa_io; 10158 ctl_action action; 10159 10160 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 10161 10162 /* 10163 * Run back along the OOA queue, starting with the current 10164 * blocked I/O and going through every I/O before it on the 10165 * queue. If starting_io is NULL, we'll just end up returning 10166 * CTL_ACTION_PASS. 10167 */ 10168 for (ooa_io = starting_io; ooa_io != NULL; 10169 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10170 ooa_links)){ 10171 10172 /* 10173 * This routine just checks to see whether 10174 * cur_blocked is blocked by ooa_io, which is ahead 10175 * of it in the queue. It doesn't queue/dequeue 10176 * cur_blocked. 10177 */ 10178 action = ctl_check_for_blockage(pending_io, ooa_io); 10179 switch (action) { 10180 case CTL_ACTION_BLOCK: 10181 case CTL_ACTION_OVERLAP: 10182 case CTL_ACTION_OVERLAP_TAG: 10183 case CTL_ACTION_SKIP: 10184 case CTL_ACTION_ERROR: 10185 return (action); 10186 break; /* NOTREACHED */ 10187 case CTL_ACTION_PASS: 10188 break; 10189 default: 10190 panic("invalid action %d", action); 10191 break; /* NOTREACHED */ 10192 } 10193 } 10194 10195 return (CTL_ACTION_PASS); 10196} 10197 10198/* 10199 * Assumptions: 10200 * - An I/O has just completed, and has been removed from the per-LUN OOA 10201 * queue, so some items on the blocked queue may now be unblocked. 10202 */ 10203static int 10204ctl_check_blocked(struct ctl_lun *lun) 10205{ 10206 union ctl_io *cur_blocked, *next_blocked; 10207 10208 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 10209 10210 /* 10211 * Run forward from the head of the blocked queue, checking each 10212 * entry against the I/Os prior to it on the OOA queue to see if 10213 * there is still any blockage. 10214 * 10215 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10216 * with our removing a variable on it while it is traversing the 10217 * list. 10218 */ 10219 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10220 cur_blocked != NULL; cur_blocked = next_blocked) { 10221 union ctl_io *prev_ooa; 10222 ctl_action action; 10223 10224 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10225 blocked_links); 10226 10227 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10228 ctl_ooaq, ooa_links); 10229 10230 /* 10231 * If cur_blocked happens to be the first item in the OOA 10232 * queue now, prev_ooa will be NULL, and the action 10233 * returned will just be CTL_ACTION_PASS. 10234 */ 10235 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10236 10237 switch (action) { 10238 case CTL_ACTION_BLOCK: 10239 /* Nothing to do here, still blocked */ 10240 break; 10241 case CTL_ACTION_OVERLAP: 10242 case CTL_ACTION_OVERLAP_TAG: 10243 /* 10244 * This shouldn't happen! In theory we've already 10245 * checked this command for overlap... 10246 */ 10247 break; 10248 case CTL_ACTION_PASS: 10249 case CTL_ACTION_SKIP: { 10250 struct ctl_softc *softc; 10251 struct ctl_cmd_entry *entry; 10252 uint32_t initidx; 10253 uint8_t opcode; 10254 int isc_retval; 10255 10256 /* 10257 * The skip case shouldn't happen, this transaction 10258 * should have never made it onto the blocked queue. 10259 */ 10260 /* 10261 * This I/O is no longer blocked, we can remove it 10262 * from the blocked queue. Since this is a TAILQ 10263 * (doubly linked list), we can do O(1) removals 10264 * from any place on the list. 10265 */ 10266 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10267 blocked_links); 10268 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10269 10270 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10271 /* 10272 * Need to send IO back to original side to 10273 * run 10274 */ 10275 union ctl_ha_msg msg_info; 10276 10277 msg_info.hdr.original_sc = 10278 cur_blocked->io_hdr.original_sc; 10279 msg_info.hdr.serializing_sc = cur_blocked; 10280 msg_info.hdr.msg_type = CTL_MSG_R2R; 10281 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10282 &msg_info, sizeof(msg_info), 0)) > 10283 CTL_HA_STATUS_SUCCESS) { 10284 printf("CTL:Check Blocked error from " 10285 "ctl_ha_msg_send %d\n", 10286 isc_retval); 10287 } 10288 break; 10289 } 10290 opcode = cur_blocked->scsiio.cdb[0]; 10291 entry = &ctl_cmd_table[opcode]; 10292 softc = control_softc; 10293 10294 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10295 10296 /* 10297 * Check this I/O for LUN state changes that may 10298 * have happened while this command was blocked. 10299 * The LUN state may have been changed by a command 10300 * ahead of us in the queue, so we need to re-check 10301 * for any states that can be caused by SCSI 10302 * commands. 10303 */ 10304 if (ctl_scsiio_lun_check(softc, lun, entry, 10305 &cur_blocked->scsiio) == 0) { 10306 cur_blocked->io_hdr.flags |= 10307 CTL_FLAG_IS_WAS_ON_RTR; 10308 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 10309 &cur_blocked->io_hdr, links); 10310 /* 10311 * In the non CTL_DONE_THREAD case, we need 10312 * to wake up the work thread here. When 10313 * we're processing completed requests from 10314 * the work thread context, we'll pop back 10315 * around and end up pulling things off the 10316 * RtR queue. When we aren't processing 10317 * things from the work thread context, 10318 * though, we won't ever check the RtR queue. 10319 * So we need to wake up the thread to clear 10320 * things off the queue. Otherwise this 10321 * transaction will just sit on the RtR queue 10322 * until a new I/O comes in. (Which may or 10323 * may not happen...) 10324 */ 10325#ifndef CTL_DONE_THREAD 10326 ctl_wakeup_thread(); 10327#endif 10328 } else 10329 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 10330 break; 10331 } 10332 default: 10333 /* 10334 * This probably shouldn't happen -- we shouldn't 10335 * get CTL_ACTION_ERROR, or anything else. 10336 */ 10337 break; 10338 } 10339 } 10340 10341 return (CTL_RETVAL_COMPLETE); 10342} 10343 10344/* 10345 * This routine (with one exception) checks LUN flags that can be set by 10346 * commands ahead of us in the OOA queue. These flags have to be checked 10347 * when a command initially comes in, and when we pull a command off the 10348 * blocked queue and are preparing to execute it. The reason we have to 10349 * check these flags for commands on the blocked queue is that the LUN 10350 * state may have been changed by a command ahead of us while we're on the 10351 * blocked queue. 10352 * 10353 * Ordering is somewhat important with these checks, so please pay 10354 * careful attention to the placement of any new checks. 10355 */ 10356static int 10357ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10358 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10359{ 10360 int retval; 10361 10362 retval = 0; 10363 10364 /* 10365 * If this shelf is a secondary shelf controller, we have to reject 10366 * any media access commands. 10367 */ 10368#if 0 10369 /* No longer needed for HA */ 10370 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10371 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10372 ctl_set_lun_standby(ctsio); 10373 retval = 1; 10374 goto bailout; 10375 } 10376#endif 10377 10378 /* 10379 * Check for a reservation conflict. If this command isn't allowed 10380 * even on reserved LUNs, and if this initiator isn't the one who 10381 * reserved us, reject the command with a reservation conflict. 10382 */ 10383 if ((lun->flags & CTL_LUN_RESERVED) 10384 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10385 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10386 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10387 || (ctsio->io_hdr.nexus.targ_target.id != 10388 lun->rsv_nexus.targ_target.id)) { 10389 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10390 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10391 retval = 1; 10392 goto bailout; 10393 } 10394 } 10395 10396 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10397 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10398 uint32_t residx; 10399 10400 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10401 /* 10402 * if we aren't registered or it's a res holder type 10403 * reservation and this isn't the res holder then set a 10404 * conflict. 10405 * NOTE: Commands which might be allowed on write exclusive 10406 * type reservations are checked in the particular command 10407 * for a conflict. Read and SSU are the only ones. 10408 */ 10409 if (!lun->per_res[residx].registered 10410 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10411 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10412 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10413 retval = 1; 10414 goto bailout; 10415 } 10416 10417 } 10418 10419 if ((lun->flags & CTL_LUN_OFFLINE) 10420 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10421 ctl_set_lun_not_ready(ctsio); 10422 retval = 1; 10423 goto bailout; 10424 } 10425 10426 /* 10427 * If the LUN is stopped, see if this particular command is allowed 10428 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10429 */ 10430 if ((lun->flags & CTL_LUN_STOPPED) 10431 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10432 /* "Logical unit not ready, initializing cmd. required" */ 10433 ctl_set_lun_stopped(ctsio); 10434 retval = 1; 10435 goto bailout; 10436 } 10437 10438 if ((lun->flags & CTL_LUN_INOPERABLE) 10439 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10440 /* "Medium format corrupted" */ 10441 ctl_set_medium_format_corrupted(ctsio); 10442 retval = 1; 10443 goto bailout; 10444 } 10445 10446bailout: 10447 return (retval); 10448 10449} 10450 10451static void 10452ctl_failover_io(union ctl_io *io, int have_lock) 10453{ 10454 ctl_set_busy(&io->scsiio); 10455 ctl_done_lock(io, have_lock); 10456} 10457 10458static void 10459ctl_failover(void) 10460{ 10461 struct ctl_lun *lun; 10462 struct ctl_softc *ctl_softc; 10463 union ctl_io *next_io, *pending_io; 10464 union ctl_io *io; 10465 int lun_idx; 10466 int i; 10467 10468 ctl_softc = control_softc; 10469 10470 mtx_lock(&ctl_softc->ctl_lock); 10471 /* 10472 * Remove any cmds from the other SC from the rtr queue. These 10473 * will obviously only be for LUNs for which we're the primary. 10474 * We can't send status or get/send data for these commands. 10475 * Since they haven't been executed yet, we can just remove them. 10476 * We'll either abort them or delete them below, depending on 10477 * which HA mode we're in. 10478 */ 10479 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10480 io != NULL; io = next_io) { 10481 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10482 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10483 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10484 ctl_io_hdr, links); 10485 } 10486 10487 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10488 lun = ctl_softc->ctl_luns[lun_idx]; 10489 if (lun==NULL) 10490 continue; 10491 10492 /* 10493 * Processor LUNs are primary on both sides. 10494 * XXX will this always be true? 10495 */ 10496 if (lun->be_lun->lun_type == T_PROCESSOR) 10497 continue; 10498 10499 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10500 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10501 printf("FAILOVER: primary lun %d\n", lun_idx); 10502 /* 10503 * Remove all commands from the other SC. First from the 10504 * blocked queue then from the ooa queue. Once we have 10505 * removed them. Call ctl_check_blocked to see if there 10506 * is anything that can run. 10507 */ 10508 for (io = (union ctl_io *)TAILQ_FIRST( 10509 &lun->blocked_queue); io != NULL; io = next_io) { 10510 10511 next_io = (union ctl_io *)TAILQ_NEXT( 10512 &io->io_hdr, blocked_links); 10513 10514 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10515 TAILQ_REMOVE(&lun->blocked_queue, 10516 &io->io_hdr,blocked_links); 10517 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10518 TAILQ_REMOVE(&lun->ooa_queue, 10519 &io->io_hdr, ooa_links); 10520 10521 ctl_free_io(io); 10522 } 10523 } 10524 10525 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10526 io != NULL; io = next_io) { 10527 10528 next_io = (union ctl_io *)TAILQ_NEXT( 10529 &io->io_hdr, ooa_links); 10530 10531 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10532 10533 TAILQ_REMOVE(&lun->ooa_queue, 10534 &io->io_hdr, 10535 ooa_links); 10536 10537 ctl_free_io(io); 10538 } 10539 } 10540 ctl_check_blocked(lun); 10541 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10542 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10543 10544 printf("FAILOVER: primary lun %d\n", lun_idx); 10545 /* 10546 * Abort all commands from the other SC. We can't 10547 * send status back for them now. These should get 10548 * cleaned up when they are completed or come out 10549 * for a datamove operation. 10550 */ 10551 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10552 io != NULL; io = next_io) { 10553 next_io = (union ctl_io *)TAILQ_NEXT( 10554 &io->io_hdr, ooa_links); 10555 10556 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10557 io->io_hdr.flags |= CTL_FLAG_ABORT; 10558 } 10559 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10560 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10561 10562 printf("FAILOVER: secondary lun %d\n", lun_idx); 10563 10564 lun->flags |= CTL_LUN_PRIMARY_SC; 10565 10566 /* 10567 * We send all I/O that was sent to this controller 10568 * and redirected to the other side back with 10569 * busy status, and have the initiator retry it. 10570 * Figuring out how much data has been transferred, 10571 * etc. and picking up where we left off would be 10572 * very tricky. 10573 * 10574 * XXX KDM need to remove I/O from the blocked 10575 * queue as well! 10576 */ 10577 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10578 &lun->ooa_queue); pending_io != NULL; 10579 pending_io = next_io) { 10580 10581 next_io = (union ctl_io *)TAILQ_NEXT( 10582 &pending_io->io_hdr, ooa_links); 10583 10584 pending_io->io_hdr.flags &= 10585 ~CTL_FLAG_SENT_2OTHER_SC; 10586 10587 if (pending_io->io_hdr.flags & 10588 CTL_FLAG_IO_ACTIVE) { 10589 pending_io->io_hdr.flags |= 10590 CTL_FLAG_FAILOVER; 10591 } else { 10592 ctl_set_busy(&pending_io->scsiio); 10593 ctl_done_lock(pending_io, 10594 /*have_lock*/1); 10595 } 10596 } 10597 10598 /* 10599 * Build Unit Attention 10600 */ 10601 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10602 lun->pending_sense[i].ua_pending |= 10603 CTL_UA_ASYM_ACC_CHANGE; 10604 } 10605 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10606 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10607 printf("FAILOVER: secondary lun %d\n", lun_idx); 10608 /* 10609 * if the first io on the OOA is not on the RtR queue 10610 * add it. 10611 */ 10612 lun->flags |= CTL_LUN_PRIMARY_SC; 10613 10614 pending_io = (union ctl_io *)TAILQ_FIRST( 10615 &lun->ooa_queue); 10616 if (pending_io==NULL) { 10617 printf("Nothing on OOA queue\n"); 10618 continue; 10619 } 10620 10621 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10622 if ((pending_io->io_hdr.flags & 10623 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10624 pending_io->io_hdr.flags |= 10625 CTL_FLAG_IS_WAS_ON_RTR; 10626 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 10627 &pending_io->io_hdr, links); 10628 } 10629#if 0 10630 else 10631 { 10632 printf("Tag 0x%04x is running\n", 10633 pending_io->scsiio.tag_num); 10634 } 10635#endif 10636 10637 next_io = (union ctl_io *)TAILQ_NEXT( 10638 &pending_io->io_hdr, ooa_links); 10639 for (pending_io=next_io; pending_io != NULL; 10640 pending_io = next_io) { 10641 pending_io->io_hdr.flags &= 10642 ~CTL_FLAG_SENT_2OTHER_SC; 10643 next_io = (union ctl_io *)TAILQ_NEXT( 10644 &pending_io->io_hdr, ooa_links); 10645 if (pending_io->io_hdr.flags & 10646 CTL_FLAG_IS_WAS_ON_RTR) { 10647#if 0 10648 printf("Tag 0x%04x is running\n", 10649 pending_io->scsiio.tag_num); 10650#endif 10651 continue; 10652 } 10653 10654 switch (ctl_check_ooa(lun, pending_io, 10655 (union ctl_io *)TAILQ_PREV( 10656 &pending_io->io_hdr, ctl_ooaq, 10657 ooa_links))) { 10658 10659 case CTL_ACTION_BLOCK: 10660 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10661 &pending_io->io_hdr, 10662 blocked_links); 10663 pending_io->io_hdr.flags |= 10664 CTL_FLAG_BLOCKED; 10665 break; 10666 case CTL_ACTION_PASS: 10667 case CTL_ACTION_SKIP: 10668 pending_io->io_hdr.flags |= 10669 CTL_FLAG_IS_WAS_ON_RTR; 10670 STAILQ_INSERT_TAIL( 10671 &ctl_softc->rtr_queue, 10672 &pending_io->io_hdr, links); 10673 break; 10674 case CTL_ACTION_OVERLAP: 10675 ctl_set_overlapped_cmd( 10676 (struct ctl_scsiio *)pending_io); 10677 ctl_done_lock(pending_io, 10678 /*have_lock*/ 1); 10679 break; 10680 case CTL_ACTION_OVERLAP_TAG: 10681 ctl_set_overlapped_tag( 10682 (struct ctl_scsiio *)pending_io, 10683 pending_io->scsiio.tag_num & 0xff); 10684 ctl_done_lock(pending_io, 10685 /*have_lock*/ 1); 10686 break; 10687 case CTL_ACTION_ERROR: 10688 default: 10689 ctl_set_internal_failure( 10690 (struct ctl_scsiio *)pending_io, 10691 0, // sks_valid 10692 0); //retry count 10693 ctl_done_lock(pending_io, 10694 /*have_lock*/ 1); 10695 break; 10696 } 10697 } 10698 10699 /* 10700 * Build Unit Attention 10701 */ 10702 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10703 lun->pending_sense[i].ua_pending |= 10704 CTL_UA_ASYM_ACC_CHANGE; 10705 } 10706 } else { 10707 panic("Unhandled HA mode failover, LUN flags = %#x, " 10708 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10709 } 10710 } 10711 ctl_pause_rtr = 0; 10712 mtx_unlock(&ctl_softc->ctl_lock); 10713} 10714 10715static int 10716ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10717{ 10718 struct ctl_lun *lun; 10719 struct ctl_cmd_entry *entry; 10720 uint8_t opcode; 10721 uint32_t initidx, targ_lun; 10722 int retval; 10723 10724 retval = 0; 10725 10726 lun = NULL; 10727 10728 opcode = ctsio->cdb[0]; 10729 10730 mtx_lock(&ctl_softc->ctl_lock); 10731 10732 targ_lun = ctsio->io_hdr.nexus.targ_lun; 10733 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 10734 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 10735 if ((targ_lun < CTL_MAX_LUNS) 10736 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 10737 lun = ctl_softc->ctl_luns[targ_lun]; 10738 /* 10739 * If the LUN is invalid, pretend that it doesn't exist. 10740 * It will go away as soon as all pending I/O has been 10741 * completed. 10742 */ 10743 if (lun->flags & CTL_LUN_DISABLED) { 10744 lun = NULL; 10745 } else { 10746 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 10747 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 10748 lun->be_lun; 10749 if (lun->be_lun->lun_type == T_PROCESSOR) { 10750 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 10751 } 10752 } 10753 } else { 10754 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 10755 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 10756 } 10757 10758 entry = &ctl_cmd_table[opcode]; 10759 10760 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 10761 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 10762 10763 /* 10764 * Check to see whether we can send this command to LUNs that don't 10765 * exist. This should pretty much only be the case for inquiry 10766 * and request sense. Further checks, below, really require having 10767 * a LUN, so we can't really check the command anymore. Just put 10768 * it on the rtr queue. 10769 */ 10770 if (lun == NULL) { 10771 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10772 goto queue_rtr; 10773 10774 ctl_set_unsupported_lun(ctsio); 10775 mtx_unlock(&ctl_softc->ctl_lock); 10776 ctl_done((union ctl_io *)ctsio); 10777 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 10778 goto bailout; 10779 } else { 10780 /* 10781 * Every I/O goes into the OOA queue for a particular LUN, and 10782 * stays there until completion. 10783 */ 10784 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 10785 10786 /* 10787 * Make sure we support this particular command on this LUN. 10788 * e.g., we don't support writes to the control LUN. 10789 */ 10790 switch (lun->be_lun->lun_type) { 10791 case T_PROCESSOR: 10792 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 10793 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10794 == 0)) { 10795 ctl_set_invalid_opcode(ctsio); 10796 mtx_unlock(&ctl_softc->ctl_lock); 10797 ctl_done((union ctl_io *)ctsio); 10798 goto bailout; 10799 } 10800 break; 10801 case T_DIRECT: 10802 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 10803 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10804 == 0)){ 10805 ctl_set_invalid_opcode(ctsio); 10806 mtx_unlock(&ctl_softc->ctl_lock); 10807 ctl_done((union ctl_io *)ctsio); 10808 goto bailout; 10809 } 10810 break; 10811 default: 10812 printf("Unsupported CTL LUN type %d\n", 10813 lun->be_lun->lun_type); 10814 panic("Unsupported CTL LUN type %d\n", 10815 lun->be_lun->lun_type); 10816 break; /* NOTREACHED */ 10817 } 10818 } 10819 10820 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 10821 10822 /* 10823 * If we've got a request sense, it'll clear the contingent 10824 * allegiance condition. Otherwise, if we have a CA condition for 10825 * this initiator, clear it, because it sent down a command other 10826 * than request sense. 10827 */ 10828 if ((opcode != REQUEST_SENSE) 10829 && (ctl_is_set(lun->have_ca, initidx))) 10830 ctl_clear_mask(lun->have_ca, initidx); 10831 10832 /* 10833 * If the command has this flag set, it handles its own unit 10834 * attention reporting, we shouldn't do anything. Otherwise we 10835 * check for any pending unit attentions, and send them back to the 10836 * initiator. We only do this when a command initially comes in, 10837 * not when we pull it off the blocked queue. 10838 * 10839 * According to SAM-3, section 5.3.2, the order that things get 10840 * presented back to the host is basically unit attentions caused 10841 * by some sort of reset event, busy status, reservation conflicts 10842 * or task set full, and finally any other status. 10843 * 10844 * One issue here is that some of the unit attentions we report 10845 * don't fall into the "reset" category (e.g. "reported luns data 10846 * has changed"). So reporting it here, before the reservation 10847 * check, may be technically wrong. I guess the only thing to do 10848 * would be to check for and report the reset events here, and then 10849 * check for the other unit attention types after we check for a 10850 * reservation conflict. 10851 * 10852 * XXX KDM need to fix this 10853 */ 10854 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 10855 ctl_ua_type ua_type; 10856 10857 ua_type = lun->pending_sense[initidx].ua_pending; 10858 if (ua_type != CTL_UA_NONE) { 10859 scsi_sense_data_type sense_format; 10860 10861 if (lun != NULL) 10862 sense_format = (lun->flags & 10863 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 10864 SSD_TYPE_FIXED; 10865 else 10866 sense_format = SSD_TYPE_FIXED; 10867 10868 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 10869 sense_format); 10870 if (ua_type != CTL_UA_NONE) { 10871 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 10872 ctsio->io_hdr.status = CTL_SCSI_ERROR | 10873 CTL_AUTOSENSE; 10874 ctsio->sense_len = SSD_FULL_SIZE; 10875 lun->pending_sense[initidx].ua_pending &= 10876 ~ua_type; 10877 mtx_unlock(&ctl_softc->ctl_lock); 10878 ctl_done((union ctl_io *)ctsio); 10879 goto bailout; 10880 } 10881 } 10882 } 10883 10884 10885 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 10886 mtx_unlock(&ctl_softc->ctl_lock); 10887 ctl_done((union ctl_io *)ctsio); 10888 goto bailout; 10889 } 10890 10891 /* 10892 * XXX CHD this is where we want to send IO to other side if 10893 * this LUN is secondary on this SC. We will need to make a copy 10894 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 10895 * the copy we send as FROM_OTHER. 10896 * We also need to stuff the address of the original IO so we can 10897 * find it easily. Something similar will need be done on the other 10898 * side so when we are done we can find the copy. 10899 */ 10900 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 10901 union ctl_ha_msg msg_info; 10902 int isc_retval; 10903 10904 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10905 10906 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 10907 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 10908#if 0 10909 printf("1. ctsio %p\n", ctsio); 10910#endif 10911 msg_info.hdr.serializing_sc = NULL; 10912 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 10913 msg_info.scsi.tag_num = ctsio->tag_num; 10914 msg_info.scsi.tag_type = ctsio->tag_type; 10915 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 10916 10917 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 10918 10919 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10920 (void *)&msg_info, sizeof(msg_info), 0)) > 10921 CTL_HA_STATUS_SUCCESS) { 10922 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 10923 isc_retval); 10924 printf("CTL:opcode is %x\n",opcode); 10925 } else { 10926#if 0 10927 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 10928#endif 10929 } 10930 10931 /* 10932 * XXX KDM this I/O is off the incoming queue, but hasn't 10933 * been inserted on any other queue. We may need to come 10934 * up with a holding queue while we wait for serialization 10935 * so that we have an idea of what we're waiting for from 10936 * the other side. 10937 */ 10938 goto bailout_unlock; 10939 } 10940 10941 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 10942 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 10943 ctl_ooaq, ooa_links))) { 10944 case CTL_ACTION_BLOCK: 10945 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 10946 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 10947 blocked_links); 10948 goto bailout_unlock; 10949 break; /* NOTREACHED */ 10950 case CTL_ACTION_PASS: 10951 case CTL_ACTION_SKIP: 10952 goto queue_rtr; 10953 break; /* NOTREACHED */ 10954 case CTL_ACTION_OVERLAP: 10955 ctl_set_overlapped_cmd(ctsio); 10956 mtx_unlock(&ctl_softc->ctl_lock); 10957 ctl_done((union ctl_io *)ctsio); 10958 goto bailout; 10959 break; /* NOTREACHED */ 10960 case CTL_ACTION_OVERLAP_TAG: 10961 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 10962 mtx_unlock(&ctl_softc->ctl_lock); 10963 ctl_done((union ctl_io *)ctsio); 10964 goto bailout; 10965 break; /* NOTREACHED */ 10966 case CTL_ACTION_ERROR: 10967 default: 10968 ctl_set_internal_failure(ctsio, 10969 /*sks_valid*/ 0, 10970 /*retry_count*/ 0); 10971 mtx_unlock(&ctl_softc->ctl_lock); 10972 ctl_done((union ctl_io *)ctsio); 10973 goto bailout; 10974 break; /* NOTREACHED */ 10975 } 10976 10977 goto bailout_unlock; 10978 10979queue_rtr: 10980 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 10981 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 10982 10983bailout_unlock: 10984 mtx_unlock(&ctl_softc->ctl_lock); 10985 10986bailout: 10987 return (retval); 10988} 10989 10990static int 10991ctl_scsiio(struct ctl_scsiio *ctsio) 10992{ 10993 int retval; 10994 struct ctl_cmd_entry *entry; 10995 10996 retval = CTL_RETVAL_COMPLETE; 10997 10998 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 10999 11000 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11001 11002 /* 11003 * If this I/O has been aborted, just send it straight to 11004 * ctl_done() without executing it. 11005 */ 11006 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11007 ctl_done((union ctl_io *)ctsio); 11008 goto bailout; 11009 } 11010 11011 /* 11012 * All the checks should have been handled by ctl_scsiio_precheck(). 11013 * We should be clear now to just execute the I/O. 11014 */ 11015 retval = entry->execute(ctsio); 11016 11017bailout: 11018 return (retval); 11019} 11020 11021/* 11022 * Since we only implement one target right now, a bus reset simply resets 11023 * our single target. 11024 */ 11025static int 11026ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11027{ 11028 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11029} 11030 11031static int 11032ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11033 ctl_ua_type ua_type) 11034{ 11035 struct ctl_lun *lun; 11036 int retval; 11037 11038 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11039 union ctl_ha_msg msg_info; 11040 11041 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11042 msg_info.hdr.nexus = io->io_hdr.nexus; 11043 if (ua_type==CTL_UA_TARG_RESET) 11044 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11045 else 11046 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11047 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11048 msg_info.hdr.original_sc = NULL; 11049 msg_info.hdr.serializing_sc = NULL; 11050 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11051 (void *)&msg_info, sizeof(msg_info), 0)) { 11052 } 11053 } 11054 retval = 0; 11055 11056 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11057 retval += ctl_lun_reset(lun, io, ua_type); 11058 11059 return (retval); 11060} 11061 11062/* 11063 * The LUN should always be set. The I/O is optional, and is used to 11064 * distinguish between I/Os sent by this initiator, and by other 11065 * initiators. We set unit attention for initiators other than this one. 11066 * SAM-3 is vague on this point. It does say that a unit attention should 11067 * be established for other initiators when a LUN is reset (see section 11068 * 5.7.3), but it doesn't specifically say that the unit attention should 11069 * be established for this particular initiator when a LUN is reset. Here 11070 * is the relevant text, from SAM-3 rev 8: 11071 * 11072 * 5.7.2 When a SCSI initiator port aborts its own tasks 11073 * 11074 * When a SCSI initiator port causes its own task(s) to be aborted, no 11075 * notification that the task(s) have been aborted shall be returned to 11076 * the SCSI initiator port other than the completion response for the 11077 * command or task management function action that caused the task(s) to 11078 * be aborted and notification(s) associated with related effects of the 11079 * action (e.g., a reset unit attention condition). 11080 * 11081 * XXX KDM for now, we're setting unit attention for all initiators. 11082 */ 11083static int 11084ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11085{ 11086 union ctl_io *xio; 11087#if 0 11088 uint32_t initindex; 11089#endif 11090 int i; 11091 11092 /* 11093 * Run through the OOA queue and abort each I/O. 11094 */ 11095#if 0 11096 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11097#endif 11098 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11099 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11100 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11101 } 11102 11103 /* 11104 * This version sets unit attention for every 11105 */ 11106#if 0 11107 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11108 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11109 if (initindex == i) 11110 continue; 11111 lun->pending_sense[i].ua_pending |= ua_type; 11112 } 11113#endif 11114 11115 /* 11116 * A reset (any kind, really) clears reservations established with 11117 * RESERVE/RELEASE. It does not clear reservations established 11118 * with PERSISTENT RESERVE OUT, but we don't support that at the 11119 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11120 * reservations made with the RESERVE/RELEASE commands, because 11121 * those commands are obsolete in SPC-3. 11122 */ 11123 lun->flags &= ~CTL_LUN_RESERVED; 11124 11125 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11126 ctl_clear_mask(lun->have_ca, i); 11127 lun->pending_sense[i].ua_pending |= ua_type; 11128 } 11129 11130 return (0); 11131} 11132 11133static int 11134ctl_abort_task(union ctl_io *io) 11135{ 11136 union ctl_io *xio; 11137 struct ctl_lun *lun; 11138 struct ctl_softc *ctl_softc; 11139#if 0 11140 struct sbuf sb; 11141 char printbuf[128]; 11142#endif 11143 int found; 11144 uint32_t targ_lun; 11145 11146 ctl_softc = control_softc; 11147 found = 0; 11148 11149 /* 11150 * Look up the LUN. 11151 */ 11152 targ_lun = io->io_hdr.nexus.targ_lun; 11153 if (io->io_hdr.nexus.lun_map_fn != NULL) 11154 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11155 if ((targ_lun < CTL_MAX_LUNS) 11156 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11157 lun = ctl_softc->ctl_luns[targ_lun]; 11158 else 11159 goto bailout; 11160 11161#if 0 11162 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11163 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11164#endif 11165 11166 /* 11167 * Run through the OOA queue and attempt to find the given I/O. 11168 * The target port, initiator ID, tag type and tag number have to 11169 * match the values that we got from the initiator. If we have an 11170 * untagged command to abort, simply abort the first untagged command 11171 * we come to. We only allow one untagged command at a time of course. 11172 */ 11173#if 0 11174 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11175#endif 11176 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11177 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11178#if 0 11179 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11180 11181 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11182 lun->lun, xio->scsiio.tag_num, 11183 xio->scsiio.tag_type, 11184 (xio->io_hdr.blocked_links.tqe_prev 11185 == NULL) ? "" : " BLOCKED", 11186 (xio->io_hdr.flags & 11187 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11188 (xio->io_hdr.flags & 11189 CTL_FLAG_ABORT) ? " ABORT" : "", 11190 (xio->io_hdr.flags & 11191 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11192 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11193 sbuf_finish(&sb); 11194 printf("%s\n", sbuf_data(&sb)); 11195#endif 11196 11197 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11198 && (xio->io_hdr.nexus.initid.id == 11199 io->io_hdr.nexus.initid.id)) { 11200 /* 11201 * If the abort says that the task is untagged, the 11202 * task in the queue must be untagged. Otherwise, 11203 * we just check to see whether the tag numbers 11204 * match. This is because the QLogic firmware 11205 * doesn't pass back the tag type in an abort 11206 * request. 11207 */ 11208#if 0 11209 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11210 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11211 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11212#endif 11213 /* 11214 * XXX KDM we've got problems with FC, because it 11215 * doesn't send down a tag type with aborts. So we 11216 * can only really go by the tag number... 11217 * This may cause problems with parallel SCSI. 11218 * Need to figure that out!! 11219 */ 11220 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11221 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11222 found = 1; 11223 if ((io->io_hdr.flags & 11224 CTL_FLAG_FROM_OTHER_SC) == 0 && 11225 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11226 union ctl_ha_msg msg_info; 11227 11228 io->io_hdr.flags |= 11229 CTL_FLAG_SENT_2OTHER_SC; 11230 msg_info.hdr.nexus = io->io_hdr.nexus; 11231 msg_info.task.task_action = 11232 CTL_TASK_ABORT_TASK; 11233 msg_info.task.tag_num = 11234 io->taskio.tag_num; 11235 msg_info.task.tag_type = 11236 io->taskio.tag_type; 11237 msg_info.hdr.msg_type = 11238 CTL_MSG_MANAGE_TASKS; 11239 msg_info.hdr.original_sc = NULL; 11240 msg_info.hdr.serializing_sc = NULL; 11241#if 0 11242 printf("Sent Abort to other side\n"); 11243#endif 11244 if (CTL_HA_STATUS_SUCCESS != 11245 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11246 (void *)&msg_info, 11247 sizeof(msg_info), 0)) { 11248 } 11249 } 11250#if 0 11251 printf("ctl_abort_task: found I/O to abort\n"); 11252#endif 11253 break; 11254 } 11255 } 11256 } 11257 11258bailout: 11259 11260 if (found == 0) { 11261 /* 11262 * This isn't really an error. It's entirely possible for 11263 * the abort and command completion to cross on the wire. 11264 * This is more of an informative/diagnostic error. 11265 */ 11266#if 0 11267 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11268 "%d:%d:%d:%d tag %d type %d\n", 11269 io->io_hdr.nexus.initid.id, 11270 io->io_hdr.nexus.targ_port, 11271 io->io_hdr.nexus.targ_target.id, 11272 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11273 io->taskio.tag_type); 11274#endif 11275 return (1); 11276 } else 11277 return (0); 11278} 11279 11280/* 11281 * This routine cannot block! It must be callable from an interrupt 11282 * handler as well as from the work thread. 11283 */ 11284static void 11285ctl_run_task_queue(struct ctl_softc *ctl_softc) 11286{ 11287 union ctl_io *io, *next_io; 11288 11289 mtx_assert(&ctl_softc->ctl_lock, MA_OWNED); 11290 11291 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 11292 11293 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 11294 io != NULL; io = next_io) { 11295 int retval; 11296 const char *task_desc; 11297 11298 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 11299 11300 retval = 0; 11301 11302 switch (io->io_hdr.io_type) { 11303 case CTL_IO_TASK: { 11304 task_desc = ctl_scsi_task_string(&io->taskio); 11305 if (task_desc != NULL) { 11306#ifdef NEEDTOPORT 11307 csevent_log(CSC_CTL | CSC_SHELF_SW | 11308 CTL_TASK_REPORT, 11309 csevent_LogType_Trace, 11310 csevent_Severity_Information, 11311 csevent_AlertLevel_Green, 11312 csevent_FRU_Firmware, 11313 csevent_FRU_Unknown, 11314 "CTL: received task: %s",task_desc); 11315#endif 11316 } else { 11317#ifdef NEEDTOPORT 11318 csevent_log(CSC_CTL | CSC_SHELF_SW | 11319 CTL_TASK_REPORT, 11320 csevent_LogType_Trace, 11321 csevent_Severity_Information, 11322 csevent_AlertLevel_Green, 11323 csevent_FRU_Firmware, 11324 csevent_FRU_Unknown, 11325 "CTL: received unknown task " 11326 "type: %d (%#x)", 11327 io->taskio.task_action, 11328 io->taskio.task_action); 11329#endif 11330 } 11331 switch (io->taskio.task_action) { 11332 case CTL_TASK_ABORT_TASK: 11333 retval = ctl_abort_task(io); 11334 break; 11335 case CTL_TASK_ABORT_TASK_SET: 11336 break; 11337 case CTL_TASK_CLEAR_ACA: 11338 break; 11339 case CTL_TASK_CLEAR_TASK_SET: 11340 break; 11341 case CTL_TASK_LUN_RESET: { 11342 struct ctl_lun *lun; 11343 uint32_t targ_lun; 11344 int retval; 11345 11346 targ_lun = io->io_hdr.nexus.targ_lun; 11347 if (io->io_hdr.nexus.lun_map_fn != NULL) 11348 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11349 11350 if ((targ_lun < CTL_MAX_LUNS) 11351 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11352 lun = ctl_softc->ctl_luns[targ_lun]; 11353 else { 11354 retval = 1; 11355 break; 11356 } 11357 11358 if (!(io->io_hdr.flags & 11359 CTL_FLAG_FROM_OTHER_SC)) { 11360 union ctl_ha_msg msg_info; 11361 11362 io->io_hdr.flags |= 11363 CTL_FLAG_SENT_2OTHER_SC; 11364 msg_info.hdr.msg_type = 11365 CTL_MSG_MANAGE_TASKS; 11366 msg_info.hdr.nexus = io->io_hdr.nexus; 11367 msg_info.task.task_action = 11368 CTL_TASK_LUN_RESET; 11369 msg_info.hdr.original_sc = NULL; 11370 msg_info.hdr.serializing_sc = NULL; 11371 if (CTL_HA_STATUS_SUCCESS != 11372 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11373 (void *)&msg_info, 11374 sizeof(msg_info), 0)) { 11375 } 11376 } 11377 11378 retval = ctl_lun_reset(lun, io, 11379 CTL_UA_LUN_RESET); 11380 break; 11381 } 11382 case CTL_TASK_TARGET_RESET: 11383 retval = ctl_target_reset(ctl_softc, io, 11384 CTL_UA_TARG_RESET); 11385 break; 11386 case CTL_TASK_BUS_RESET: 11387 retval = ctl_bus_reset(ctl_softc, io); 11388 break; 11389 case CTL_TASK_PORT_LOGIN: 11390 break; 11391 case CTL_TASK_PORT_LOGOUT: 11392 break; 11393 default: 11394 printf("ctl_run_task_queue: got unknown task " 11395 "management event %d\n", 11396 io->taskio.task_action); 11397 break; 11398 } 11399 if (retval == 0) 11400 io->io_hdr.status = CTL_SUCCESS; 11401 else 11402 io->io_hdr.status = CTL_ERROR; 11403 11404 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11405 ctl_io_hdr, links); 11406 /* 11407 * This will queue this I/O to the done queue, but the 11408 * work thread won't be able to process it until we 11409 * return and the lock is released. 11410 */ 11411 ctl_done_lock(io, /*have_lock*/ 1); 11412 break; 11413 } 11414 default: { 11415 11416 printf("%s: invalid I/O type %d msg %d cdb %x" 11417 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11418 __func__, io->io_hdr.io_type, 11419 io->io_hdr.msg_type, io->scsiio.cdb[0], 11420 (uintmax_t)io->io_hdr.nexus.initid.id, 11421 io->io_hdr.nexus.targ_port, 11422 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11423 io->io_hdr.nexus.targ_lun /* XXX */, 11424 (io->io_hdr.io_type == CTL_IO_TASK) ? 11425 io->taskio.tag_num : io->scsiio.tag_num); 11426 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11427 ctl_io_hdr, links); 11428 ctl_free_io(io); 11429 break; 11430 } 11431 } 11432 } 11433 11434 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11435} 11436 11437/* 11438 * For HA operation. Handle commands that come in from the other 11439 * controller. 11440 */ 11441static void 11442ctl_handle_isc(union ctl_io *io) 11443{ 11444 int free_io; 11445 struct ctl_lun *lun; 11446 struct ctl_softc *ctl_softc; 11447 uint32_t targ_lun; 11448 11449 ctl_softc = control_softc; 11450 11451 targ_lun = io->io_hdr.nexus.targ_lun; 11452 if (io->io_hdr.nexus.lun_map_fn != NULL) 11453 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11454 lun = ctl_softc->ctl_luns[targ_lun]; 11455 11456 switch (io->io_hdr.msg_type) { 11457 case CTL_MSG_SERIALIZE: 11458 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11459 /*have_lock*/ 0); 11460 break; 11461 case CTL_MSG_R2R: { 11462 uint8_t opcode; 11463 struct ctl_cmd_entry *entry; 11464 11465 /* 11466 * This is only used in SER_ONLY mode. 11467 */ 11468 free_io = 0; 11469 opcode = io->scsiio.cdb[0]; 11470 entry = &ctl_cmd_table[opcode]; 11471 mtx_lock(&ctl_softc->ctl_lock); 11472 if (ctl_scsiio_lun_check(ctl_softc, lun, 11473 entry, (struct ctl_scsiio *)io) != 0) { 11474 ctl_done_lock(io, /*have_lock*/ 1); 11475 mtx_unlock(&ctl_softc->ctl_lock); 11476 break; 11477 } 11478 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11479 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11480 &io->io_hdr, links); 11481 mtx_unlock(&ctl_softc->ctl_lock); 11482 break; 11483 } 11484 case CTL_MSG_FINISH_IO: 11485 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11486 free_io = 0; 11487 ctl_done_lock(io, /*have_lock*/ 0); 11488 } else { 11489 free_io = 1; 11490 mtx_lock(&ctl_softc->ctl_lock); 11491 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11492 ooa_links); 11493 STAILQ_REMOVE(&ctl_softc->task_queue, 11494 &io->io_hdr, ctl_io_hdr, links); 11495 ctl_check_blocked(lun); 11496 mtx_unlock(&ctl_softc->ctl_lock); 11497 } 11498 break; 11499 case CTL_MSG_PERS_ACTION: 11500 ctl_hndl_per_res_out_on_other_sc( 11501 (union ctl_ha_msg *)&io->presio.pr_msg); 11502 free_io = 1; 11503 break; 11504 case CTL_MSG_BAD_JUJU: 11505 free_io = 0; 11506 ctl_done_lock(io, /*have_lock*/ 0); 11507 break; 11508 case CTL_MSG_DATAMOVE: 11509 /* Only used in XFER mode */ 11510 free_io = 0; 11511 ctl_datamove_remote(io); 11512 break; 11513 case CTL_MSG_DATAMOVE_DONE: 11514 /* Only used in XFER mode */ 11515 free_io = 0; 11516 io->scsiio.be_move_done(io); 11517 break; 11518 default: 11519 free_io = 1; 11520 printf("%s: Invalid message type %d\n", 11521 __func__, io->io_hdr.msg_type); 11522 break; 11523 } 11524 if (free_io) 11525 ctl_free_io(io); 11526 11527} 11528 11529 11530/* 11531 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11532 * there is no match. 11533 */ 11534static ctl_lun_error_pattern 11535ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11536{ 11537 struct ctl_cmd_entry *entry; 11538 ctl_lun_error_pattern filtered_pattern, pattern; 11539 uint8_t opcode; 11540 11541 pattern = desc->error_pattern; 11542 11543 /* 11544 * XXX KDM we need more data passed into this function to match a 11545 * custom pattern, and we actually need to implement custom pattern 11546 * matching. 11547 */ 11548 if (pattern & CTL_LUN_PAT_CMD) 11549 return (CTL_LUN_PAT_CMD); 11550 11551 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11552 return (CTL_LUN_PAT_ANY); 11553 11554 opcode = ctsio->cdb[0]; 11555 entry = &ctl_cmd_table[opcode]; 11556 11557 filtered_pattern = entry->pattern & pattern; 11558 11559 /* 11560 * If the user requested specific flags in the pattern (e.g. 11561 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11562 * flags. 11563 * 11564 * If the user did not specify any flags, it doesn't matter whether 11565 * or not the command supports the flags. 11566 */ 11567 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11568 (pattern & ~CTL_LUN_PAT_MASK)) 11569 return (CTL_LUN_PAT_NONE); 11570 11571 /* 11572 * If the user asked for a range check, see if the requested LBA 11573 * range overlaps with this command's LBA range. 11574 */ 11575 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11576 uint64_t lba1; 11577 uint32_t len1; 11578 ctl_action action; 11579 int retval; 11580 11581 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11582 if (retval != 0) 11583 return (CTL_LUN_PAT_NONE); 11584 11585 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11586 desc->lba_range.len); 11587 /* 11588 * A "pass" means that the LBA ranges don't overlap, so 11589 * this doesn't match the user's range criteria. 11590 */ 11591 if (action == CTL_ACTION_PASS) 11592 return (CTL_LUN_PAT_NONE); 11593 } 11594 11595 return (filtered_pattern); 11596} 11597 11598static void 11599ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11600{ 11601 struct ctl_error_desc *desc, *desc2; 11602 11603 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 11604 11605 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11606 ctl_lun_error_pattern pattern; 11607 /* 11608 * Check to see whether this particular command matches 11609 * the pattern in the descriptor. 11610 */ 11611 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11612 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11613 continue; 11614 11615 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11616 case CTL_LUN_INJ_ABORTED: 11617 ctl_set_aborted(&io->scsiio); 11618 break; 11619 case CTL_LUN_INJ_MEDIUM_ERR: 11620 ctl_set_medium_error(&io->scsiio); 11621 break; 11622 case CTL_LUN_INJ_UA: 11623 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11624 * OCCURRED */ 11625 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11626 break; 11627 case CTL_LUN_INJ_CUSTOM: 11628 /* 11629 * We're assuming the user knows what he is doing. 11630 * Just copy the sense information without doing 11631 * checks. 11632 */ 11633 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11634 ctl_min(sizeof(desc->custom_sense), 11635 sizeof(io->scsiio.sense_data))); 11636 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11637 io->scsiio.sense_len = SSD_FULL_SIZE; 11638 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11639 break; 11640 case CTL_LUN_INJ_NONE: 11641 default: 11642 /* 11643 * If this is an error injection type we don't know 11644 * about, clear the continuous flag (if it is set) 11645 * so it will get deleted below. 11646 */ 11647 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11648 break; 11649 } 11650 /* 11651 * By default, each error injection action is a one-shot 11652 */ 11653 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11654 continue; 11655 11656 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11657 11658 free(desc, M_CTL); 11659 } 11660} 11661 11662#ifdef CTL_IO_DELAY 11663static void 11664ctl_datamove_timer_wakeup(void *arg) 11665{ 11666 union ctl_io *io; 11667 11668 io = (union ctl_io *)arg; 11669 11670 ctl_datamove(io); 11671} 11672#endif /* CTL_IO_DELAY */ 11673 11674void 11675ctl_datamove(union ctl_io *io) 11676{ 11677 void (*fe_datamove)(union ctl_io *io); 11678 11679 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 11680 11681 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11682 11683#ifdef CTL_TIME_IO 11684 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11685 char str[256]; 11686 char path_str[64]; 11687 struct sbuf sb; 11688 11689 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11690 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11691 11692 sbuf_cat(&sb, path_str); 11693 switch (io->io_hdr.io_type) { 11694 case CTL_IO_SCSI: 11695 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11696 sbuf_printf(&sb, "\n"); 11697 sbuf_cat(&sb, path_str); 11698 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11699 io->scsiio.tag_num, io->scsiio.tag_type); 11700 break; 11701 case CTL_IO_TASK: 11702 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11703 "Tag Type: %d\n", io->taskio.task_action, 11704 io->taskio.tag_num, io->taskio.tag_type); 11705 break; 11706 default: 11707 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11708 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11709 break; 11710 } 11711 sbuf_cat(&sb, path_str); 11712 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11713 (intmax_t)time_uptime - io->io_hdr.start_time); 11714 sbuf_finish(&sb); 11715 printf("%s", sbuf_data(&sb)); 11716 } 11717#endif /* CTL_TIME_IO */ 11718 11719 mtx_lock(&control_softc->ctl_lock); 11720#ifdef CTL_IO_DELAY 11721 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11722 struct ctl_lun *lun; 11723 11724 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11725 11726 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11727 } else { 11728 struct ctl_lun *lun; 11729 11730 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11731 if ((lun != NULL) 11732 && (lun->delay_info.datamove_delay > 0)) { 11733 struct callout *callout; 11734 11735 callout = (struct callout *)&io->io_hdr.timer_bytes; 11736 callout_init(callout, /*mpsafe*/ 1); 11737 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11738 callout_reset(callout, 11739 lun->delay_info.datamove_delay * hz, 11740 ctl_datamove_timer_wakeup, io); 11741 if (lun->delay_info.datamove_type == 11742 CTL_DELAY_TYPE_ONESHOT) 11743 lun->delay_info.datamove_delay = 0; 11744 mtx_unlock(&control_softc->ctl_lock); 11745 return; 11746 } 11747 } 11748#endif 11749 /* 11750 * If we have any pending task management commands, process them 11751 * first. This is necessary to eliminate a race condition with the 11752 * FETD: 11753 * 11754 * - FETD submits a task management command, like an abort. 11755 * - Back end calls fe_datamove() to move the data for the aborted 11756 * command. The FETD can't really accept it, but if it did, it 11757 * would end up transmitting data for a command that the initiator 11758 * told us to abort. 11759 * 11760 * We close the race by processing all pending task management 11761 * commands here (we can't block!), and then check this I/O to see 11762 * if it has been aborted. If so, return it to the back end with 11763 * bad status, so the back end can say return an error to the back end 11764 * and then when the back end returns an error, we can return the 11765 * aborted command to the FETD, so it can clean up its resources. 11766 */ 11767 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 11768 ctl_run_task_queue(control_softc); 11769 11770 /* 11771 * This command has been aborted. Set the port status, so we fail 11772 * the data move. 11773 */ 11774 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11775 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11776 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11777 io->io_hdr.nexus.targ_port, 11778 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11779 io->io_hdr.nexus.targ_lun); 11780 io->io_hdr.status = CTL_CMD_ABORTED; 11781 io->io_hdr.port_status = 31337; 11782 mtx_unlock(&control_softc->ctl_lock); 11783 /* 11784 * Note that the backend, in this case, will get the 11785 * callback in its context. In other cases it may get 11786 * called in the frontend's interrupt thread context. 11787 */ 11788 io->scsiio.be_move_done(io); 11789 return; 11790 } 11791 11792 /* 11793 * If we're in XFER mode and this I/O is from the other shelf 11794 * controller, we need to send the DMA to the other side to 11795 * actually transfer the data to/from the host. In serialize only 11796 * mode the transfer happens below CTL and ctl_datamove() is only 11797 * called on the machine that originally received the I/O. 11798 */ 11799 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 11800 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11801 union ctl_ha_msg msg; 11802 uint32_t sg_entries_sent; 11803 int do_sg_copy; 11804 int i; 11805 11806 memset(&msg, 0, sizeof(msg)); 11807 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 11808 msg.hdr.original_sc = io->io_hdr.original_sc; 11809 msg.hdr.serializing_sc = io; 11810 msg.hdr.nexus = io->io_hdr.nexus; 11811 msg.dt.flags = io->io_hdr.flags; 11812 /* 11813 * We convert everything into a S/G list here. We can't 11814 * pass by reference, only by value between controllers. 11815 * So we can't pass a pointer to the S/G list, only as many 11816 * S/G entries as we can fit in here. If it's possible for 11817 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 11818 * then we need to break this up into multiple transfers. 11819 */ 11820 if (io->scsiio.kern_sg_entries == 0) { 11821 msg.dt.kern_sg_entries = 1; 11822 /* 11823 * If this is in cached memory, flush the cache 11824 * before we send the DMA request to the other 11825 * controller. We want to do this in either the 11826 * read or the write case. The read case is 11827 * straightforward. In the write case, we want to 11828 * make sure nothing is in the local cache that 11829 * could overwrite the DMAed data. 11830 */ 11831 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11832 /* 11833 * XXX KDM use bus_dmamap_sync() here. 11834 */ 11835 } 11836 11837 /* 11838 * Convert to a physical address if this is a 11839 * virtual address. 11840 */ 11841 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 11842 msg.dt.sg_list[0].addr = 11843 io->scsiio.kern_data_ptr; 11844 } else { 11845 /* 11846 * XXX KDM use busdma here! 11847 */ 11848#if 0 11849 msg.dt.sg_list[0].addr = (void *) 11850 vtophys(io->scsiio.kern_data_ptr); 11851#endif 11852 } 11853 11854 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 11855 do_sg_copy = 0; 11856 } else { 11857 struct ctl_sg_entry *sgl; 11858 11859 do_sg_copy = 1; 11860 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 11861 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 11862 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11863 /* 11864 * XXX KDM use bus_dmamap_sync() here. 11865 */ 11866 } 11867 } 11868 11869 msg.dt.kern_data_len = io->scsiio.kern_data_len; 11870 msg.dt.kern_total_len = io->scsiio.kern_total_len; 11871 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 11872 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 11873 msg.dt.sg_sequence = 0; 11874 11875 /* 11876 * Loop until we've sent all of the S/G entries. On the 11877 * other end, we'll recompose these S/G entries into one 11878 * contiguous list before passing it to the 11879 */ 11880 for (sg_entries_sent = 0; sg_entries_sent < 11881 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 11882 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 11883 sizeof(msg.dt.sg_list[0])), 11884 msg.dt.kern_sg_entries - sg_entries_sent); 11885 11886 if (do_sg_copy != 0) { 11887 struct ctl_sg_entry *sgl; 11888 int j; 11889 11890 sgl = (struct ctl_sg_entry *) 11891 io->scsiio.kern_data_ptr; 11892 /* 11893 * If this is in cached memory, flush the cache 11894 * before we send the DMA request to the other 11895 * controller. We want to do this in either 11896 * the * read or the write case. The read 11897 * case is straightforward. In the write 11898 * case, we want to make sure nothing is 11899 * in the local cache that could overwrite 11900 * the DMAed data. 11901 */ 11902 11903 for (i = sg_entries_sent, j = 0; 11904 i < msg.dt.cur_sg_entries; i++, j++) { 11905 if ((io->io_hdr.flags & 11906 CTL_FLAG_NO_DATASYNC) == 0) { 11907 /* 11908 * XXX KDM use bus_dmamap_sync() 11909 */ 11910 } 11911 if ((io->io_hdr.flags & 11912 CTL_FLAG_BUS_ADDR) == 0) { 11913 /* 11914 * XXX KDM use busdma. 11915 */ 11916#if 0 11917 msg.dt.sg_list[j].addr =(void *) 11918 vtophys(sgl[i].addr); 11919#endif 11920 } else { 11921 msg.dt.sg_list[j].addr = 11922 sgl[i].addr; 11923 } 11924 msg.dt.sg_list[j].len = sgl[i].len; 11925 } 11926 } 11927 11928 sg_entries_sent += msg.dt.cur_sg_entries; 11929 if (sg_entries_sent >= msg.dt.kern_sg_entries) 11930 msg.dt.sg_last = 1; 11931 else 11932 msg.dt.sg_last = 0; 11933 11934 /* 11935 * XXX KDM drop and reacquire the lock here? 11936 */ 11937 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 11938 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 11939 /* 11940 * XXX do something here. 11941 */ 11942 } 11943 11944 msg.dt.sent_sg_entries = sg_entries_sent; 11945 } 11946 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11947 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 11948 ctl_failover_io(io, /*have_lock*/ 1); 11949 11950 } else { 11951 11952 /* 11953 * Lookup the fe_datamove() function for this particular 11954 * front end. 11955 */ 11956 fe_datamove = 11957 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11958 mtx_unlock(&control_softc->ctl_lock); 11959 11960 fe_datamove(io); 11961 } 11962} 11963 11964static void 11965ctl_send_datamove_done(union ctl_io *io, int have_lock) 11966{ 11967 union ctl_ha_msg msg; 11968 int isc_status; 11969 11970 memset(&msg, 0, sizeof(msg)); 11971 11972 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 11973 msg.hdr.original_sc = io; 11974 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 11975 msg.hdr.nexus = io->io_hdr.nexus; 11976 msg.hdr.status = io->io_hdr.status; 11977 msg.scsi.tag_num = io->scsiio.tag_num; 11978 msg.scsi.tag_type = io->scsiio.tag_type; 11979 msg.scsi.scsi_status = io->scsiio.scsi_status; 11980 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 11981 sizeof(io->scsiio.sense_data)); 11982 msg.scsi.sense_len = io->scsiio.sense_len; 11983 msg.scsi.sense_residual = io->scsiio.sense_residual; 11984 msg.scsi.fetd_status = io->io_hdr.port_status; 11985 msg.scsi.residual = io->scsiio.residual; 11986 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11987 11988 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 11989 ctl_failover_io(io, /*have_lock*/ have_lock); 11990 return; 11991 } 11992 11993 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 11994 if (isc_status > CTL_HA_STATUS_SUCCESS) { 11995 /* XXX do something if this fails */ 11996 } 11997 11998} 11999 12000/* 12001 * The DMA to the remote side is done, now we need to tell the other side 12002 * we're done so it can continue with its data movement. 12003 */ 12004static void 12005ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12006{ 12007 union ctl_io *io; 12008 12009 io = rq->context; 12010 12011 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12012 printf("%s: ISC DMA write failed with error %d", __func__, 12013 rq->ret); 12014 ctl_set_internal_failure(&io->scsiio, 12015 /*sks_valid*/ 1, 12016 /*retry_count*/ rq->ret); 12017 } 12018 12019 ctl_dt_req_free(rq); 12020 12021 /* 12022 * In this case, we had to malloc the memory locally. Free it. 12023 */ 12024 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12025 int i; 12026 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12027 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12028 } 12029 /* 12030 * The data is in local and remote memory, so now we need to send 12031 * status (good or back) back to the other side. 12032 */ 12033 ctl_send_datamove_done(io, /*have_lock*/ 0); 12034} 12035 12036/* 12037 * We've moved the data from the host/controller into local memory. Now we 12038 * need to push it over to the remote controller's memory. 12039 */ 12040static int 12041ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12042{ 12043 int retval; 12044 12045 retval = 0; 12046 12047 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12048 ctl_datamove_remote_write_cb); 12049 12050 return (retval); 12051} 12052 12053static void 12054ctl_datamove_remote_write(union ctl_io *io) 12055{ 12056 int retval; 12057 void (*fe_datamove)(union ctl_io *io); 12058 12059 /* 12060 * - Get the data from the host/HBA into local memory. 12061 * - DMA memory from the local controller to the remote controller. 12062 * - Send status back to the remote controller. 12063 */ 12064 12065 retval = ctl_datamove_remote_sgl_setup(io); 12066 if (retval != 0) 12067 return; 12068 12069 /* Switch the pointer over so the FETD knows what to do */ 12070 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12071 12072 /* 12073 * Use a custom move done callback, since we need to send completion 12074 * back to the other controller, not to the backend on this side. 12075 */ 12076 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12077 12078 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12079 12080 fe_datamove(io); 12081 12082 return; 12083 12084} 12085 12086static int 12087ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12088{ 12089#if 0 12090 char str[256]; 12091 char path_str[64]; 12092 struct sbuf sb; 12093#endif 12094 12095 /* 12096 * In this case, we had to malloc the memory locally. Free it. 12097 */ 12098 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12099 int i; 12100 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12101 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12102 } 12103 12104#if 0 12105 scsi_path_string(io, path_str, sizeof(path_str)); 12106 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12107 sbuf_cat(&sb, path_str); 12108 scsi_command_string(&io->scsiio, NULL, &sb); 12109 sbuf_printf(&sb, "\n"); 12110 sbuf_cat(&sb, path_str); 12111 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12112 io->scsiio.tag_num, io->scsiio.tag_type); 12113 sbuf_cat(&sb, path_str); 12114 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12115 io->io_hdr.flags, io->io_hdr.status); 12116 sbuf_finish(&sb); 12117 printk("%s", sbuf_data(&sb)); 12118#endif 12119 12120 12121 /* 12122 * The read is done, now we need to send status (good or bad) back 12123 * to the other side. 12124 */ 12125 ctl_send_datamove_done(io, /*have_lock*/ 0); 12126 12127 return (0); 12128} 12129 12130static void 12131ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12132{ 12133 union ctl_io *io; 12134 void (*fe_datamove)(union ctl_io *io); 12135 12136 io = rq->context; 12137 12138 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12139 printf("%s: ISC DMA read failed with error %d", __func__, 12140 rq->ret); 12141 ctl_set_internal_failure(&io->scsiio, 12142 /*sks_valid*/ 1, 12143 /*retry_count*/ rq->ret); 12144 } 12145 12146 ctl_dt_req_free(rq); 12147 12148 /* Switch the pointer over so the FETD knows what to do */ 12149 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12150 12151 /* 12152 * Use a custom move done callback, since we need to send completion 12153 * back to the other controller, not to the backend on this side. 12154 */ 12155 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12156 12157 /* XXX KDM add checks like the ones in ctl_datamove? */ 12158 12159 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12160 12161 fe_datamove(io); 12162} 12163 12164static int 12165ctl_datamove_remote_sgl_setup(union ctl_io *io) 12166{ 12167 struct ctl_sg_entry *local_sglist, *remote_sglist; 12168 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12169 struct ctl_softc *softc; 12170 int retval; 12171 int i; 12172 12173 retval = 0; 12174 softc = control_softc; 12175 12176 local_sglist = io->io_hdr.local_sglist; 12177 local_dma_sglist = io->io_hdr.local_dma_sglist; 12178 remote_sglist = io->io_hdr.remote_sglist; 12179 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12180 12181 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12182 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12183 local_sglist[i].len = remote_sglist[i].len; 12184 12185 /* 12186 * XXX Detect the situation where the RS-level I/O 12187 * redirector on the other side has already read the 12188 * data off of the AOR RS on this side, and 12189 * transferred it to remote (mirror) memory on the 12190 * other side. Since we already have the data in 12191 * memory here, we just need to use it. 12192 * 12193 * XXX KDM this can probably be removed once we 12194 * get the cache device code in and take the 12195 * current AOR implementation out. 12196 */ 12197#ifdef NEEDTOPORT 12198 if ((remote_sglist[i].addr >= 12199 (void *)vtophys(softc->mirr->addr)) 12200 && (remote_sglist[i].addr < 12201 ((void *)vtophys(softc->mirr->addr) + 12202 CacheMirrorOffset))) { 12203 local_sglist[i].addr = remote_sglist[i].addr - 12204 CacheMirrorOffset; 12205 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12206 CTL_FLAG_DATA_IN) 12207 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12208 } else { 12209 local_sglist[i].addr = remote_sglist[i].addr + 12210 CacheMirrorOffset; 12211 } 12212#endif 12213#if 0 12214 printf("%s: local %p, remote %p, len %d\n", 12215 __func__, local_sglist[i].addr, 12216 remote_sglist[i].addr, local_sglist[i].len); 12217#endif 12218 } 12219 } else { 12220 uint32_t len_to_go; 12221 12222 /* 12223 * In this case, we don't have automatically allocated 12224 * memory for this I/O on this controller. This typically 12225 * happens with internal CTL I/O -- e.g. inquiry, mode 12226 * sense, etc. Anything coming from RAIDCore will have 12227 * a mirror area available. 12228 */ 12229 len_to_go = io->scsiio.kern_data_len; 12230 12231 /* 12232 * Clear the no datasync flag, we have to use malloced 12233 * buffers. 12234 */ 12235 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12236 12237 /* 12238 * The difficult thing here is that the size of the various 12239 * S/G segments may be different than the size from the 12240 * remote controller. That'll make it harder when DMAing 12241 * the data back to the other side. 12242 */ 12243 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12244 sizeof(io->io_hdr.remote_sglist[0])) && 12245 (len_to_go > 0); i++) { 12246 local_sglist[i].len = ctl_min(len_to_go, 131072); 12247 CTL_SIZE_8B(local_dma_sglist[i].len, 12248 local_sglist[i].len); 12249 local_sglist[i].addr = 12250 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12251 12252 local_dma_sglist[i].addr = local_sglist[i].addr; 12253 12254 if (local_sglist[i].addr == NULL) { 12255 int j; 12256 12257 printf("malloc failed for %zd bytes!", 12258 local_dma_sglist[i].len); 12259 for (j = 0; j < i; j++) { 12260 free(local_sglist[j].addr, M_CTL); 12261 } 12262 ctl_set_internal_failure(&io->scsiio, 12263 /*sks_valid*/ 1, 12264 /*retry_count*/ 4857); 12265 retval = 1; 12266 goto bailout_error; 12267 12268 } 12269 /* XXX KDM do we need a sync here? */ 12270 12271 len_to_go -= local_sglist[i].len; 12272 } 12273 /* 12274 * Reset the number of S/G entries accordingly. The 12275 * original number of S/G entries is available in 12276 * rem_sg_entries. 12277 */ 12278 io->scsiio.kern_sg_entries = i; 12279 12280#if 0 12281 printf("%s: kern_sg_entries = %d\n", __func__, 12282 io->scsiio.kern_sg_entries); 12283 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12284 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12285 local_sglist[i].addr, local_sglist[i].len, 12286 local_dma_sglist[i].len); 12287#endif 12288 } 12289 12290 12291 return (retval); 12292 12293bailout_error: 12294 12295 ctl_send_datamove_done(io, /*have_lock*/ 0); 12296 12297 return (retval); 12298} 12299 12300static int 12301ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12302 ctl_ha_dt_cb callback) 12303{ 12304 struct ctl_ha_dt_req *rq; 12305 struct ctl_sg_entry *remote_sglist, *local_sglist; 12306 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12307 uint32_t local_used, remote_used, total_used; 12308 int retval; 12309 int i, j; 12310 12311 retval = 0; 12312 12313 rq = ctl_dt_req_alloc(); 12314 12315 /* 12316 * If we failed to allocate the request, and if the DMA didn't fail 12317 * anyway, set busy status. This is just a resource allocation 12318 * failure. 12319 */ 12320 if ((rq == NULL) 12321 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12322 ctl_set_busy(&io->scsiio); 12323 12324 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12325 12326 if (rq != NULL) 12327 ctl_dt_req_free(rq); 12328 12329 /* 12330 * The data move failed. We need to return status back 12331 * to the other controller. No point in trying to DMA 12332 * data to the remote controller. 12333 */ 12334 12335 ctl_send_datamove_done(io, /*have_lock*/ 0); 12336 12337 retval = 1; 12338 12339 goto bailout; 12340 } 12341 12342 local_sglist = io->io_hdr.local_sglist; 12343 local_dma_sglist = io->io_hdr.local_dma_sglist; 12344 remote_sglist = io->io_hdr.remote_sglist; 12345 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12346 local_used = 0; 12347 remote_used = 0; 12348 total_used = 0; 12349 12350 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12351 rq->ret = CTL_HA_STATUS_SUCCESS; 12352 rq->context = io; 12353 callback(rq); 12354 goto bailout; 12355 } 12356 12357 /* 12358 * Pull/push the data over the wire from/to the other controller. 12359 * This takes into account the possibility that the local and 12360 * remote sglists may not be identical in terms of the size of 12361 * the elements and the number of elements. 12362 * 12363 * One fundamental assumption here is that the length allocated for 12364 * both the local and remote sglists is identical. Otherwise, we've 12365 * essentially got a coding error of some sort. 12366 */ 12367 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12368 int isc_ret; 12369 uint32_t cur_len, dma_length; 12370 uint8_t *tmp_ptr; 12371 12372 rq->id = CTL_HA_DATA_CTL; 12373 rq->command = command; 12374 rq->context = io; 12375 12376 /* 12377 * Both pointers should be aligned. But it is possible 12378 * that the allocation length is not. They should both 12379 * also have enough slack left over at the end, though, 12380 * to round up to the next 8 byte boundary. 12381 */ 12382 cur_len = ctl_min(local_sglist[i].len - local_used, 12383 remote_sglist[j].len - remote_used); 12384 12385 /* 12386 * In this case, we have a size issue and need to decrease 12387 * the size, except in the case where we actually have less 12388 * than 8 bytes left. In that case, we need to increase 12389 * the DMA length to get the last bit. 12390 */ 12391 if ((cur_len & 0x7) != 0) { 12392 if (cur_len > 0x7) { 12393 cur_len = cur_len - (cur_len & 0x7); 12394 dma_length = cur_len; 12395 } else { 12396 CTL_SIZE_8B(dma_length, cur_len); 12397 } 12398 12399 } else 12400 dma_length = cur_len; 12401 12402 /* 12403 * If we had to allocate memory for this I/O, instead of using 12404 * the non-cached mirror memory, we'll need to flush the cache 12405 * before trying to DMA to the other controller. 12406 * 12407 * We could end up doing this multiple times for the same 12408 * segment if we have a larger local segment than remote 12409 * segment. That shouldn't be an issue. 12410 */ 12411 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12412 /* 12413 * XXX KDM use bus_dmamap_sync() here. 12414 */ 12415 } 12416 12417 rq->size = dma_length; 12418 12419 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12420 tmp_ptr += local_used; 12421 12422 /* Use physical addresses when talking to ISC hardware */ 12423 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12424 /* XXX KDM use busdma */ 12425#if 0 12426 rq->local = vtophys(tmp_ptr); 12427#endif 12428 } else 12429 rq->local = tmp_ptr; 12430 12431 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12432 tmp_ptr += remote_used; 12433 rq->remote = tmp_ptr; 12434 12435 rq->callback = NULL; 12436 12437 local_used += cur_len; 12438 if (local_used >= local_sglist[i].len) { 12439 i++; 12440 local_used = 0; 12441 } 12442 12443 remote_used += cur_len; 12444 if (remote_used >= remote_sglist[j].len) { 12445 j++; 12446 remote_used = 0; 12447 } 12448 total_used += cur_len; 12449 12450 if (total_used >= io->scsiio.kern_data_len) 12451 rq->callback = callback; 12452 12453 if ((rq->size & 0x7) != 0) { 12454 printf("%s: warning: size %d is not on 8b boundary\n", 12455 __func__, rq->size); 12456 } 12457 if (((uintptr_t)rq->local & 0x7) != 0) { 12458 printf("%s: warning: local %p not on 8b boundary\n", 12459 __func__, rq->local); 12460 } 12461 if (((uintptr_t)rq->remote & 0x7) != 0) { 12462 printf("%s: warning: remote %p not on 8b boundary\n", 12463 __func__, rq->local); 12464 } 12465#if 0 12466 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12467 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12468 rq->local, rq->remote, rq->size); 12469#endif 12470 12471 isc_ret = ctl_dt_single(rq); 12472 if (isc_ret == CTL_HA_STATUS_WAIT) 12473 continue; 12474 12475 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12476 rq->ret = CTL_HA_STATUS_SUCCESS; 12477 } else { 12478 rq->ret = isc_ret; 12479 } 12480 callback(rq); 12481 goto bailout; 12482 } 12483 12484bailout: 12485 return (retval); 12486 12487} 12488 12489static void 12490ctl_datamove_remote_read(union ctl_io *io) 12491{ 12492 int retval; 12493 int i; 12494 12495 /* 12496 * This will send an error to the other controller in the case of a 12497 * failure. 12498 */ 12499 retval = ctl_datamove_remote_sgl_setup(io); 12500 if (retval != 0) 12501 return; 12502 12503 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12504 ctl_datamove_remote_read_cb); 12505 if ((retval != 0) 12506 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12507 /* 12508 * Make sure we free memory if there was an error.. The 12509 * ctl_datamove_remote_xfer() function will send the 12510 * datamove done message, or call the callback with an 12511 * error if there is a problem. 12512 */ 12513 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12514 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12515 } 12516 12517 return; 12518} 12519 12520/* 12521 * Process a datamove request from the other controller. This is used for 12522 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12523 * first. Once that is complete, the data gets DMAed into the remote 12524 * controller's memory. For reads, we DMA from the remote controller's 12525 * memory into our memory first, and then move it out to the FETD. 12526 */ 12527static void 12528ctl_datamove_remote(union ctl_io *io) 12529{ 12530 struct ctl_softc *softc; 12531 12532 softc = control_softc; 12533 12534 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12535 12536 /* 12537 * Note that we look for an aborted I/O here, but don't do some of 12538 * the other checks that ctl_datamove() normally does. We don't 12539 * need to run the task queue, because this I/O is on the ISC 12540 * queue, which is executed by the work thread after the task queue. 12541 * We don't need to run the datamove delay code, since that should 12542 * have been done if need be on the other controller. 12543 */ 12544 mtx_lock(&softc->ctl_lock); 12545 12546 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12547 12548 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12549 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12550 io->io_hdr.nexus.targ_port, 12551 io->io_hdr.nexus.targ_target.id, 12552 io->io_hdr.nexus.targ_lun); 12553 io->io_hdr.status = CTL_CMD_ABORTED; 12554 io->io_hdr.port_status = 31338; 12555 12556 mtx_unlock(&softc->ctl_lock); 12557 12558 ctl_send_datamove_done(io, /*have_lock*/ 0); 12559 12560 return; 12561 } 12562 12563 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12564 mtx_unlock(&softc->ctl_lock); 12565 ctl_datamove_remote_write(io); 12566 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12567 mtx_unlock(&softc->ctl_lock); 12568 ctl_datamove_remote_read(io); 12569 } else { 12570 union ctl_ha_msg msg; 12571 struct scsi_sense_data *sense; 12572 uint8_t sks[3]; 12573 int retry_count; 12574 12575 memset(&msg, 0, sizeof(msg)); 12576 12577 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12578 msg.hdr.status = CTL_SCSI_ERROR; 12579 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12580 12581 retry_count = 4243; 12582 12583 sense = &msg.scsi.sense_data; 12584 sks[0] = SSD_SCS_VALID; 12585 sks[1] = (retry_count >> 8) & 0xff; 12586 sks[2] = retry_count & 0xff; 12587 12588 /* "Internal target failure" */ 12589 scsi_set_sense_data(sense, 12590 /*sense_format*/ SSD_TYPE_NONE, 12591 /*current_error*/ 1, 12592 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12593 /*asc*/ 0x44, 12594 /*ascq*/ 0x00, 12595 /*type*/ SSD_ELEM_SKS, 12596 /*size*/ sizeof(sks), 12597 /*data*/ sks, 12598 SSD_ELEM_NONE); 12599 12600 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12601 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12602 ctl_failover_io(io, /*have_lock*/ 1); 12603 mtx_unlock(&softc->ctl_lock); 12604 return; 12605 } 12606 12607 mtx_unlock(&softc->ctl_lock); 12608 12609 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12610 CTL_HA_STATUS_SUCCESS) { 12611 /* XXX KDM what to do if this fails? */ 12612 } 12613 return; 12614 } 12615 12616} 12617 12618static int 12619ctl_process_done(union ctl_io *io, int have_lock) 12620{ 12621 struct ctl_lun *lun; 12622 struct ctl_softc *ctl_softc; 12623 void (*fe_done)(union ctl_io *io); 12624 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12625 12626 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12627 12628 fe_done = 12629 control_softc->ctl_ports[targ_port]->fe_done; 12630 12631#ifdef CTL_TIME_IO 12632 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12633 char str[256]; 12634 char path_str[64]; 12635 struct sbuf sb; 12636 12637 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12638 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12639 12640 sbuf_cat(&sb, path_str); 12641 switch (io->io_hdr.io_type) { 12642 case CTL_IO_SCSI: 12643 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12644 sbuf_printf(&sb, "\n"); 12645 sbuf_cat(&sb, path_str); 12646 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12647 io->scsiio.tag_num, io->scsiio.tag_type); 12648 break; 12649 case CTL_IO_TASK: 12650 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12651 "Tag Type: %d\n", io->taskio.task_action, 12652 io->taskio.tag_num, io->taskio.tag_type); 12653 break; 12654 default: 12655 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12656 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12657 break; 12658 } 12659 sbuf_cat(&sb, path_str); 12660 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12661 (intmax_t)time_uptime - io->io_hdr.start_time); 12662 sbuf_finish(&sb); 12663 printf("%s", sbuf_data(&sb)); 12664 } 12665#endif /* CTL_TIME_IO */ 12666 12667 switch (io->io_hdr.io_type) { 12668 case CTL_IO_SCSI: 12669 break; 12670 case CTL_IO_TASK: 12671 if (bootverbose || verbose > 0) 12672 ctl_io_error_print(io, NULL); 12673 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12674 ctl_free_io(io); 12675 else 12676 fe_done(io); 12677 return (CTL_RETVAL_COMPLETE); 12678 break; 12679 default: 12680 printf("ctl_process_done: invalid io type %d\n", 12681 io->io_hdr.io_type); 12682 panic("ctl_process_done: invalid io type %d\n", 12683 io->io_hdr.io_type); 12684 break; /* NOTREACHED */ 12685 } 12686 12687 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12688 if (lun == NULL) { 12689 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12690 io->io_hdr.nexus.targ_lun)); 12691 fe_done(io); 12692 goto bailout; 12693 } 12694 ctl_softc = lun->ctl_softc; 12695 12696 /* 12697 * Remove this from the OOA queue. 12698 */ 12699 if (have_lock == 0) 12700 mtx_lock(&ctl_softc->ctl_lock); 12701 12702 /* 12703 * Check to see if we have any errors to inject here. We only 12704 * inject errors for commands that don't already have errors set. 12705 */ 12706 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12707 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12708 ctl_inject_error(lun, io); 12709 12710 /* 12711 * XXX KDM how do we treat commands that aren't completed 12712 * successfully? 12713 * 12714 * XXX KDM should we also track I/O latency? 12715 */ 12716 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 12717 uint32_t blocksize; 12718#ifdef CTL_TIME_IO 12719 struct bintime cur_bt; 12720#endif 12721 12722 if ((lun->be_lun != NULL) 12723 && (lun->be_lun->blocksize != 0)) 12724 blocksize = lun->be_lun->blocksize; 12725 else 12726 blocksize = 512; 12727 12728 switch (io->io_hdr.io_type) { 12729 case CTL_IO_SCSI: { 12730 int isread; 12731 struct ctl_lba_len lbalen; 12732 12733 isread = 0; 12734 switch (io->scsiio.cdb[0]) { 12735 case READ_6: 12736 case READ_10: 12737 case READ_12: 12738 case READ_16: 12739 isread = 1; 12740 /* FALLTHROUGH */ 12741 case WRITE_6: 12742 case WRITE_10: 12743 case WRITE_12: 12744 case WRITE_16: 12745 case WRITE_VERIFY_10: 12746 case WRITE_VERIFY_12: 12747 case WRITE_VERIFY_16: 12748 memcpy(&lbalen, io->io_hdr.ctl_private[ 12749 CTL_PRIV_LBA_LEN].bytes, sizeof(lbalen)); 12750 12751 if (isread) { 12752 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 12753 lbalen.len * blocksize; 12754 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 12755 12756#ifdef CTL_TIME_IO 12757 bintime_add( 12758 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 12759 &io->io_hdr.dma_bt); 12760 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 12761 io->io_hdr.num_dmas; 12762 getbintime(&cur_bt); 12763 bintime_sub(&cur_bt, 12764 &io->io_hdr.start_bt); 12765 12766 bintime_add( 12767 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 12768 &cur_bt); 12769 12770#if 0 12771 cs_prof_gettime(&cur_ticks); 12772 lun->stats.time[CTL_STATS_READ] += 12773 cur_ticks - 12774 io->io_hdr.start_ticks; 12775#endif 12776#if 0 12777 lun->stats.time[CTL_STATS_READ] += 12778 jiffies - io->io_hdr.start_time; 12779#endif 12780#endif /* CTL_TIME_IO */ 12781 } else { 12782 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 12783 lbalen.len * blocksize; 12784 lun->stats.ports[targ_port].operations[ 12785 CTL_STATS_WRITE]++; 12786 12787#ifdef CTL_TIME_IO 12788 bintime_add( 12789 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 12790 &io->io_hdr.dma_bt); 12791 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 12792 io->io_hdr.num_dmas; 12793 getbintime(&cur_bt); 12794 bintime_sub(&cur_bt, 12795 &io->io_hdr.start_bt); 12796 12797 bintime_add( 12798 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 12799 &cur_bt); 12800#if 0 12801 cs_prof_gettime(&cur_ticks); 12802 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12803 cur_ticks - 12804 io->io_hdr.start_ticks; 12805 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12806 jiffies - io->io_hdr.start_time; 12807#endif 12808#endif /* CTL_TIME_IO */ 12809 } 12810 break; 12811 default: 12812 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 12813 12814#ifdef CTL_TIME_IO 12815 bintime_add( 12816 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 12817 &io->io_hdr.dma_bt); 12818 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 12819 io->io_hdr.num_dmas; 12820 getbintime(&cur_bt); 12821 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 12822 12823 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 12824 &cur_bt); 12825 12826#if 0 12827 cs_prof_gettime(&cur_ticks); 12828 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12829 cur_ticks - 12830 io->io_hdr.start_ticks; 12831 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12832 jiffies - io->io_hdr.start_time; 12833#endif 12834#endif /* CTL_TIME_IO */ 12835 break; 12836 } 12837 break; 12838 } 12839 default: 12840 break; 12841 } 12842 } 12843 12844 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 12845 12846 /* 12847 * Run through the blocked queue on this LUN and see if anything 12848 * has become unblocked, now that this transaction is done. 12849 */ 12850 ctl_check_blocked(lun); 12851 12852 /* 12853 * If the LUN has been invalidated, free it if there is nothing 12854 * left on its OOA queue. 12855 */ 12856 if ((lun->flags & CTL_LUN_INVALID) 12857 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 12858 ctl_free_lun(lun); 12859 12860 /* 12861 * If this command has been aborted, make sure we set the status 12862 * properly. The FETD is responsible for freeing the I/O and doing 12863 * whatever it needs to do to clean up its state. 12864 */ 12865 if (io->io_hdr.flags & CTL_FLAG_ABORT) 12866 io->io_hdr.status = CTL_CMD_ABORTED; 12867 12868 /* 12869 * We print out status for every task management command. For SCSI 12870 * commands, we filter out any unit attention errors; they happen 12871 * on every boot, and would clutter up the log. Note: task 12872 * management commands aren't printed here, they are printed above, 12873 * since they should never even make it down here. 12874 */ 12875 switch (io->io_hdr.io_type) { 12876 case CTL_IO_SCSI: { 12877 int error_code, sense_key, asc, ascq; 12878 12879 sense_key = 0; 12880 12881 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 12882 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 12883 /* 12884 * Since this is just for printing, no need to 12885 * show errors here. 12886 */ 12887 scsi_extract_sense_len(&io->scsiio.sense_data, 12888 io->scsiio.sense_len, 12889 &error_code, 12890 &sense_key, 12891 &asc, 12892 &ascq, 12893 /*show_errors*/ 0); 12894 } 12895 12896 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 12897 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 12898 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 12899 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 12900 12901 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 12902 ctl_softc->skipped_prints++; 12903 if (have_lock == 0) 12904 mtx_unlock(&ctl_softc->ctl_lock); 12905 } else { 12906 uint32_t skipped_prints; 12907 12908 skipped_prints = ctl_softc->skipped_prints; 12909 12910 ctl_softc->skipped_prints = 0; 12911 ctl_softc->last_print_jiffies = time_uptime; 12912 12913 if (have_lock == 0) 12914 mtx_unlock(&ctl_softc->ctl_lock); 12915 if (skipped_prints > 0) { 12916#ifdef NEEDTOPORT 12917 csevent_log(CSC_CTL | CSC_SHELF_SW | 12918 CTL_ERROR_REPORT, 12919 csevent_LogType_Trace, 12920 csevent_Severity_Information, 12921 csevent_AlertLevel_Green, 12922 csevent_FRU_Firmware, 12923 csevent_FRU_Unknown, 12924 "High CTL error volume, %d prints " 12925 "skipped", skipped_prints); 12926#endif 12927 } 12928 if (bootverbose || verbose > 0) 12929 ctl_io_error_print(io, NULL); 12930 } 12931 } else { 12932 if (have_lock == 0) 12933 mtx_unlock(&ctl_softc->ctl_lock); 12934 } 12935 break; 12936 } 12937 case CTL_IO_TASK: 12938 if (have_lock == 0) 12939 mtx_unlock(&ctl_softc->ctl_lock); 12940 if (bootverbose || verbose > 0) 12941 ctl_io_error_print(io, NULL); 12942 break; 12943 default: 12944 if (have_lock == 0) 12945 mtx_unlock(&ctl_softc->ctl_lock); 12946 break; 12947 } 12948 12949 /* 12950 * Tell the FETD or the other shelf controller we're done with this 12951 * command. Note that only SCSI commands get to this point. Task 12952 * management commands are completed above. 12953 * 12954 * We only send status to the other controller if we're in XFER 12955 * mode. In SER_ONLY mode, the I/O is done on the controller that 12956 * received the I/O (from CTL's perspective), and so the status is 12957 * generated there. 12958 * 12959 * XXX KDM if we hold the lock here, we could cause a deadlock 12960 * if the frontend comes back in in this context to queue 12961 * something. 12962 */ 12963 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 12964 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12965 union ctl_ha_msg msg; 12966 12967 memset(&msg, 0, sizeof(msg)); 12968 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 12969 msg.hdr.original_sc = io->io_hdr.original_sc; 12970 msg.hdr.nexus = io->io_hdr.nexus; 12971 msg.hdr.status = io->io_hdr.status; 12972 msg.scsi.scsi_status = io->scsiio.scsi_status; 12973 msg.scsi.tag_num = io->scsiio.tag_num; 12974 msg.scsi.tag_type = io->scsiio.tag_type; 12975 msg.scsi.sense_len = io->scsiio.sense_len; 12976 msg.scsi.sense_residual = io->scsiio.sense_residual; 12977 msg.scsi.residual = io->scsiio.residual; 12978 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12979 sizeof(io->scsiio.sense_data)); 12980 /* 12981 * We copy this whether or not this is an I/O-related 12982 * command. Otherwise, we'd have to go and check to see 12983 * whether it's a read/write command, and it really isn't 12984 * worth it. 12985 */ 12986 memcpy(&msg.scsi.lbalen, 12987 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 12988 sizeof(msg.scsi.lbalen)); 12989 12990 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12991 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12992 /* XXX do something here */ 12993 } 12994 12995 ctl_free_io(io); 12996 } else 12997 fe_done(io); 12998 12999bailout: 13000 13001 return (CTL_RETVAL_COMPLETE); 13002} 13003 13004/* 13005 * Front end should call this if it doesn't do autosense. When the request 13006 * sense comes back in from the initiator, we'll dequeue this and send it. 13007 */ 13008int 13009ctl_queue_sense(union ctl_io *io) 13010{ 13011 struct ctl_lun *lun; 13012 struct ctl_softc *ctl_softc; 13013 uint32_t initidx, targ_lun; 13014 13015 ctl_softc = control_softc; 13016 13017 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13018 13019 /* 13020 * LUN lookup will likely move to the ctl_work_thread() once we 13021 * have our new queueing infrastructure (that doesn't put things on 13022 * a per-LUN queue initially). That is so that we can handle 13023 * things like an INQUIRY to a LUN that we don't have enabled. We 13024 * can't deal with that right now. 13025 */ 13026 mtx_lock(&ctl_softc->ctl_lock); 13027 13028 /* 13029 * If we don't have a LUN for this, just toss the sense 13030 * information. 13031 */ 13032 targ_lun = io->io_hdr.nexus.targ_lun; 13033 if (io->io_hdr.nexus.lun_map_fn != NULL) 13034 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 13035 if ((targ_lun < CTL_MAX_LUNS) 13036 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13037 lun = ctl_softc->ctl_luns[targ_lun]; 13038 else 13039 goto bailout; 13040 13041 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13042 13043 /* 13044 * Already have CA set for this LUN...toss the sense information. 13045 */ 13046 if (ctl_is_set(lun->have_ca, initidx)) 13047 goto bailout; 13048 13049 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13050 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13051 sizeof(io->scsiio.sense_data))); 13052 ctl_set_mask(lun->have_ca, initidx); 13053 13054bailout: 13055 mtx_unlock(&ctl_softc->ctl_lock); 13056 13057 ctl_free_io(io); 13058 13059 return (CTL_RETVAL_COMPLETE); 13060} 13061 13062/* 13063 * Primary command inlet from frontend ports. All SCSI and task I/O 13064 * requests must go through this function. 13065 */ 13066int 13067ctl_queue(union ctl_io *io) 13068{ 13069 struct ctl_softc *ctl_softc; 13070 13071 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13072 13073 ctl_softc = control_softc; 13074 13075#ifdef CTL_TIME_IO 13076 io->io_hdr.start_time = time_uptime; 13077 getbintime(&io->io_hdr.start_bt); 13078#endif /* CTL_TIME_IO */ 13079 13080 mtx_lock(&ctl_softc->ctl_lock); 13081 13082 switch (io->io_hdr.io_type) { 13083 case CTL_IO_SCSI: 13084 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 13085 links); 13086 break; 13087 case CTL_IO_TASK: 13088 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 13089 /* 13090 * Set the task pending flag. This is necessary to close a 13091 * race condition with the FETD: 13092 * 13093 * - FETD submits a task management command, like an abort. 13094 * - Back end calls fe_datamove() to move the data for the 13095 * aborted command. The FETD can't really accept it, but 13096 * if it did, it would end up transmitting data for a 13097 * command that the initiator told us to abort. 13098 * 13099 * We close the race condition by setting the flag here, 13100 * and checking it in ctl_datamove(), before calling the 13101 * FETD's fe_datamove routine. If we've got a task 13102 * pending, we run the task queue and then check to see 13103 * whether our particular I/O has been aborted. 13104 */ 13105 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 13106 break; 13107 default: 13108 mtx_unlock(&ctl_softc->ctl_lock); 13109 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13110 return (-EINVAL); 13111 break; /* NOTREACHED */ 13112 } 13113 mtx_unlock(&ctl_softc->ctl_lock); 13114 13115 ctl_wakeup_thread(); 13116 13117 return (CTL_RETVAL_COMPLETE); 13118} 13119 13120#ifdef CTL_IO_DELAY 13121static void 13122ctl_done_timer_wakeup(void *arg) 13123{ 13124 union ctl_io *io; 13125 13126 io = (union ctl_io *)arg; 13127 ctl_done_lock(io, /*have_lock*/ 0); 13128} 13129#endif /* CTL_IO_DELAY */ 13130 13131void 13132ctl_done_lock(union ctl_io *io, int have_lock) 13133{ 13134 struct ctl_softc *ctl_softc; 13135#ifndef CTL_DONE_THREAD 13136 union ctl_io *xio; 13137#endif /* !CTL_DONE_THREAD */ 13138 13139 ctl_softc = control_softc; 13140 13141 if (have_lock == 0) 13142 mtx_lock(&ctl_softc->ctl_lock); 13143 13144 /* 13145 * Enable this to catch duplicate completion issues. 13146 */ 13147#if 0 13148 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13149 printf("%s: type %d msg %d cdb %x iptl: " 13150 "%d:%d:%d:%d tag 0x%04x " 13151 "flag %#x status %x\n", 13152 __func__, 13153 io->io_hdr.io_type, 13154 io->io_hdr.msg_type, 13155 io->scsiio.cdb[0], 13156 io->io_hdr.nexus.initid.id, 13157 io->io_hdr.nexus.targ_port, 13158 io->io_hdr.nexus.targ_target.id, 13159 io->io_hdr.nexus.targ_lun, 13160 (io->io_hdr.io_type == 13161 CTL_IO_TASK) ? 13162 io->taskio.tag_num : 13163 io->scsiio.tag_num, 13164 io->io_hdr.flags, 13165 io->io_hdr.status); 13166 } else 13167 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13168#endif 13169 13170 /* 13171 * This is an internal copy of an I/O, and should not go through 13172 * the normal done processing logic. 13173 */ 13174 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 13175 if (have_lock == 0) 13176 mtx_unlock(&ctl_softc->ctl_lock); 13177 return; 13178 } 13179 13180 /* 13181 * We need to send a msg to the serializing shelf to finish the IO 13182 * as well. We don't send a finish message to the other shelf if 13183 * this is a task management command. Task management commands 13184 * aren't serialized in the OOA queue, but rather just executed on 13185 * both shelf controllers for commands that originated on that 13186 * controller. 13187 */ 13188 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13189 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13190 union ctl_ha_msg msg_io; 13191 13192 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13193 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13194 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13195 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13196 } 13197 /* continue on to finish IO */ 13198 } 13199#ifdef CTL_IO_DELAY 13200 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13201 struct ctl_lun *lun; 13202 13203 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13204 13205 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13206 } else { 13207 struct ctl_lun *lun; 13208 13209 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13210 13211 if ((lun != NULL) 13212 && (lun->delay_info.done_delay > 0)) { 13213 struct callout *callout; 13214 13215 callout = (struct callout *)&io->io_hdr.timer_bytes; 13216 callout_init(callout, /*mpsafe*/ 1); 13217 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13218 callout_reset(callout, 13219 lun->delay_info.done_delay * hz, 13220 ctl_done_timer_wakeup, io); 13221 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13222 lun->delay_info.done_delay = 0; 13223 if (have_lock == 0) 13224 mtx_unlock(&ctl_softc->ctl_lock); 13225 return; 13226 } 13227 } 13228#endif /* CTL_IO_DELAY */ 13229 13230 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 13231 13232#ifdef CTL_DONE_THREAD 13233 if (have_lock == 0) 13234 mtx_unlock(&ctl_softc->ctl_lock); 13235 13236 ctl_wakeup_thread(); 13237#else /* CTL_DONE_THREAD */ 13238 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 13239 xio != NULL; 13240 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 13241 13242 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 13243 13244 ctl_process_done(xio, /*have_lock*/ 1); 13245 } 13246 if (have_lock == 0) 13247 mtx_unlock(&ctl_softc->ctl_lock); 13248#endif /* CTL_DONE_THREAD */ 13249} 13250 13251void 13252ctl_done(union ctl_io *io) 13253{ 13254 ctl_done_lock(io, /*have_lock*/ 0); 13255} 13256 13257int 13258ctl_isc(struct ctl_scsiio *ctsio) 13259{ 13260 struct ctl_lun *lun; 13261 int retval; 13262 13263 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13264 13265 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13266 13267 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13268 13269 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13270 13271 return (retval); 13272} 13273 13274 13275static void 13276ctl_work_thread(void *arg) 13277{ 13278 struct ctl_softc *softc; 13279 union ctl_io *io; 13280 struct ctl_be_lun *be_lun; 13281 int retval; 13282 13283 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13284 13285 softc = (struct ctl_softc *)arg; 13286 if (softc == NULL) 13287 return; 13288 13289 mtx_lock(&softc->ctl_lock); 13290 for (;;) { 13291 retval = 0; 13292 13293 /* 13294 * We handle the queues in this order: 13295 * - task management 13296 * - ISC 13297 * - done queue (to free up resources, unblock other commands) 13298 * - RtR queue 13299 * - incoming queue 13300 * 13301 * If those queues are empty, we break out of the loop and 13302 * go to sleep. 13303 */ 13304 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 13305 if (io != NULL) { 13306 ctl_run_task_queue(softc); 13307 continue; 13308 } 13309 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 13310 if (io != NULL) { 13311 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 13312 ctl_handle_isc(io); 13313 continue; 13314 } 13315 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 13316 if (io != NULL) { 13317 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 13318 /* clear any blocked commands, call fe_done */ 13319 mtx_unlock(&softc->ctl_lock); 13320 /* 13321 * XXX KDM 13322 * Call this without a lock for now. This will 13323 * depend on whether there is any way the FETD can 13324 * sleep or deadlock if called with the CTL lock 13325 * held. 13326 */ 13327 retval = ctl_process_done(io, /*have_lock*/ 0); 13328 mtx_lock(&softc->ctl_lock); 13329 continue; 13330 } 13331 if (!ctl_pause_rtr) { 13332 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 13333 if (io != NULL) { 13334 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 13335 mtx_unlock(&softc->ctl_lock); 13336 retval = ctl_scsiio(&io->scsiio); 13337 if (retval != CTL_RETVAL_COMPLETE) 13338 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13339 mtx_lock(&softc->ctl_lock); 13340 continue; 13341 } 13342 } 13343 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 13344 if (io != NULL) { 13345 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 13346 mtx_unlock(&softc->ctl_lock); 13347 ctl_scsiio_precheck(softc, &io->scsiio); 13348 mtx_lock(&softc->ctl_lock); 13349 continue; 13350 } 13351 /* 13352 * We might want to move this to a separate thread, so that 13353 * configuration requests (in this case LUN creations) 13354 * won't impact the I/O path. 13355 */ 13356 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13357 if (be_lun != NULL) { 13358 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13359 mtx_unlock(&softc->ctl_lock); 13360 ctl_create_lun(be_lun); 13361 mtx_lock(&softc->ctl_lock); 13362 continue; 13363 } 13364 13365 /* XXX KDM use the PDROP flag?? */ 13366 /* Sleep until we have something to do. */ 13367 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "-", 0); 13368 13369 /* Back to the top of the loop to see what woke us up. */ 13370 continue; 13371 } 13372} 13373 13374void 13375ctl_wakeup_thread() 13376{ 13377 struct ctl_softc *softc; 13378 13379 softc = control_softc; 13380 13381 wakeup_one(softc); 13382} 13383 13384/* Initialization and failover */ 13385 13386void 13387ctl_init_isc_msg(void) 13388{ 13389 printf("CTL: Still calling this thing\n"); 13390} 13391 13392/* 13393 * Init component 13394 * Initializes component into configuration defined by bootMode 13395 * (see hasc-sv.c) 13396 * returns hasc_Status: 13397 * OK 13398 * ERROR - fatal error 13399 */ 13400static ctl_ha_comp_status 13401ctl_isc_init(struct ctl_ha_component *c) 13402{ 13403 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13404 13405 c->status = ret; 13406 return ret; 13407} 13408 13409/* Start component 13410 * Starts component in state requested. If component starts successfully, 13411 * it must set its own state to the requestrd state 13412 * When requested state is HASC_STATE_HA, the component may refine it 13413 * by adding _SLAVE or _MASTER flags. 13414 * Currently allowed state transitions are: 13415 * UNKNOWN->HA - initial startup 13416 * UNKNOWN->SINGLE - initial startup when no parter detected 13417 * HA->SINGLE - failover 13418 * returns ctl_ha_comp_status: 13419 * OK - component successfully started in requested state 13420 * FAILED - could not start the requested state, failover may 13421 * be possible 13422 * ERROR - fatal error detected, no future startup possible 13423 */ 13424static ctl_ha_comp_status 13425ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13426{ 13427 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13428 13429 printf("%s: go\n", __func__); 13430 13431 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13432 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13433 ctl_is_single = 0; 13434 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13435 != CTL_HA_STATUS_SUCCESS) { 13436 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13437 ret = CTL_HA_COMP_STATUS_ERROR; 13438 } 13439 } else if (CTL_HA_STATE_IS_HA(c->state) 13440 && CTL_HA_STATE_IS_SINGLE(state)){ 13441 // HA->SINGLE transition 13442 ctl_failover(); 13443 ctl_is_single = 1; 13444 } else { 13445 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13446 c->state, state); 13447 ret = CTL_HA_COMP_STATUS_ERROR; 13448 } 13449 if (CTL_HA_STATE_IS_SINGLE(state)) 13450 ctl_is_single = 1; 13451 13452 c->state = state; 13453 c->status = ret; 13454 return ret; 13455} 13456 13457/* 13458 * Quiesce component 13459 * The component must clear any error conditions (set status to OK) and 13460 * prepare itself to another Start call 13461 * returns ctl_ha_comp_status: 13462 * OK 13463 * ERROR 13464 */ 13465static ctl_ha_comp_status 13466ctl_isc_quiesce(struct ctl_ha_component *c) 13467{ 13468 int ret = CTL_HA_COMP_STATUS_OK; 13469 13470 ctl_pause_rtr = 1; 13471 c->status = ret; 13472 return ret; 13473} 13474 13475struct ctl_ha_component ctl_ha_component_ctlisc = 13476{ 13477 .name = "CTL ISC", 13478 .state = CTL_HA_STATE_UNKNOWN, 13479 .init = ctl_isc_init, 13480 .start = ctl_isc_start, 13481 .quiesce = ctl_isc_quiesce 13482}; 13483 13484/* 13485 * vim: ts=8 13486 */ 13487