ctl.c revision 229997
1/*- 2 * Copyright (c) 2003-2009 Silicon Graphics International Corp. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions, and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * substantially similar to the "NO WARRANTY" disclaimer below 13 * ("Disclaimer") and any redistribution must be conditioned upon 14 * including a substantially similar Disclaimer requirement for further 15 * binary redistribution. 16 * 17 * NO WARRANTY 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGES. 29 * 30 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl.c#8 $ 31 */ 32/* 33 * CAM Target Layer, a SCSI device emulation subsystem. 34 * 35 * Author: Ken Merry <ken@FreeBSD.org> 36 */ 37 38#define _CTL_C 39 40#include <sys/cdefs.h> 41__FBSDID("$FreeBSD: head/sys/cam/ctl/ctl.c 229997 2012-01-12 00:34:33Z ken $"); 42 43#include <sys/param.h> 44#include <sys/systm.h> 45#include <sys/kernel.h> 46#include <sys/types.h> 47#include <sys/kthread.h> 48#include <sys/bio.h> 49#include <sys/fcntl.h> 50#include <sys/lock.h> 51#include <sys/mutex.h> 52#include <sys/condvar.h> 53#include <sys/malloc.h> 54#include <sys/conf.h> 55#include <sys/ioccom.h> 56#include <sys/queue.h> 57#include <sys/sbuf.h> 58#include <sys/endian.h> 59#include <sys/sysctl.h> 60 61#include <cam/cam.h> 62#include <cam/scsi/scsi_all.h> 63#include <cam/scsi/scsi_da.h> 64#include <cam/ctl/ctl_io.h> 65#include <cam/ctl/ctl.h> 66#include <cam/ctl/ctl_frontend.h> 67#include <cam/ctl/ctl_frontend_internal.h> 68#include <cam/ctl/ctl_util.h> 69#include <cam/ctl/ctl_backend.h> 70#include <cam/ctl/ctl_ioctl.h> 71#include <cam/ctl/ctl_ha.h> 72#include <cam/ctl/ctl_private.h> 73#include <cam/ctl/ctl_debug.h> 74#include <cam/ctl/ctl_scsi_all.h> 75#include <cam/ctl/ctl_error.h> 76 77struct ctl_softc *control_softc = NULL; 78 79/* 80 * The default is to run with CTL_DONE_THREAD turned on. Completed 81 * transactions are queued for processing by the CTL work thread. When 82 * CTL_DONE_THREAD is not defined, completed transactions are processed in 83 * the caller's context. 84 */ 85#define CTL_DONE_THREAD 86 87/* 88 * * Use the serial number and device ID provided by the backend, rather than 89 * * making up our own. 90 * */ 91#define CTL_USE_BACKEND_SN 92 93/* 94 * Size and alignment macros needed for Copan-specific HA hardware. These 95 * can go away when the HA code is re-written, and uses busdma for any 96 * hardware. 97 */ 98#define CTL_ALIGN_8B(target, source, type) \ 99 if (((uint32_t)source & 0x7) != 0) \ 100 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 101 else \ 102 target = (type)source; 103 104#define CTL_SIZE_8B(target, size) \ 105 if ((size & 0x7) != 0) \ 106 target = size + (0x8 - (size & 0x7)); \ 107 else \ 108 target = size; 109 110#define CTL_ALIGN_8B_MARGIN 16 111 112/* 113 * Template mode pages. 114 */ 115 116/* 117 * Note that these are default values only. The actual values will be 118 * filled in when the user does a mode sense. 119 */ 120static struct copan_power_subpage power_page_default = { 121 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 122 /*subpage*/ PWR_SUBPAGE_CODE, 123 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 124 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 125 /*page_version*/ PWR_VERSION, 126 /* total_luns */ 26, 127 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 128 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 129 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 130 0, 0, 0, 0, 0, 0} 131}; 132 133static struct copan_power_subpage power_page_changeable = { 134 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 135 /*subpage*/ PWR_SUBPAGE_CODE, 136 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 137 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 138 /*page_version*/ 0, 139 /* total_luns */ 0, 140 /* max_active_luns*/ 0, 141 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 142 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 143 0, 0, 0, 0, 0, 0} 144}; 145 146static struct copan_aps_subpage aps_page_default = { 147 APS_PAGE_CODE | SMPH_SPF, //page_code 148 APS_SUBPAGE_CODE, //subpage 149 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 150 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 151 APS_VERSION, //page_version 152 0, //lock_active 153 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 154 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 155 0, 0, 0, 0, 0} //reserved 156}; 157 158static struct copan_aps_subpage aps_page_changeable = { 159 APS_PAGE_CODE | SMPH_SPF, //page_code 160 APS_SUBPAGE_CODE, //subpage 161 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 162 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 163 0, //page_version 164 0, //lock_active 165 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 166 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 167 0, 0, 0, 0, 0} //reserved 168}; 169 170static struct copan_debugconf_subpage debugconf_page_default = { 171 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 172 DBGCNF_SUBPAGE_CODE, /* subpage */ 173 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 174 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 175 DBGCNF_VERSION, /* page_version */ 176 {CTL_TIME_IO_DEFAULT_SECS>>8, 177 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 178}; 179 180static struct copan_debugconf_subpage debugconf_page_changeable = { 181 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 182 DBGCNF_SUBPAGE_CODE, /* subpage */ 183 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 184 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 185 0, /* page_version */ 186 {0xff,0xff}, /* ctl_time_io_secs */ 187}; 188 189static struct scsi_format_page format_page_default = { 190 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 191 /*page_length*/sizeof(struct scsi_format_page) - 2, 192 /*tracks_per_zone*/ {0, 0}, 193 /*alt_sectors_per_zone*/ {0, 0}, 194 /*alt_tracks_per_zone*/ {0, 0}, 195 /*alt_tracks_per_lun*/ {0, 0}, 196 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 197 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 198 /*bytes_per_sector*/ {0, 0}, 199 /*interleave*/ {0, 0}, 200 /*track_skew*/ {0, 0}, 201 /*cylinder_skew*/ {0, 0}, 202 /*flags*/ SFP_HSEC, 203 /*reserved*/ {0, 0, 0} 204}; 205 206static struct scsi_format_page format_page_changeable = { 207 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 208 /*page_length*/sizeof(struct scsi_format_page) - 2, 209 /*tracks_per_zone*/ {0, 0}, 210 /*alt_sectors_per_zone*/ {0, 0}, 211 /*alt_tracks_per_zone*/ {0, 0}, 212 /*alt_tracks_per_lun*/ {0, 0}, 213 /*sectors_per_track*/ {0, 0}, 214 /*bytes_per_sector*/ {0, 0}, 215 /*interleave*/ {0, 0}, 216 /*track_skew*/ {0, 0}, 217 /*cylinder_skew*/ {0, 0}, 218 /*flags*/ 0, 219 /*reserved*/ {0, 0, 0} 220}; 221 222static struct scsi_rigid_disk_page rigid_disk_page_default = { 223 /*page_code*/SMS_RIGID_DISK_PAGE, 224 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 225 /*cylinders*/ {0, 0, 0}, 226 /*heads*/ CTL_DEFAULT_HEADS, 227 /*start_write_precomp*/ {0, 0, 0}, 228 /*start_reduced_current*/ {0, 0, 0}, 229 /*step_rate*/ {0, 0}, 230 /*landing_zone_cylinder*/ {0, 0, 0}, 231 /*rpl*/ SRDP_RPL_DISABLED, 232 /*rotational_offset*/ 0, 233 /*reserved1*/ 0, 234 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 235 CTL_DEFAULT_ROTATION_RATE & 0xff}, 236 /*reserved2*/ {0, 0} 237}; 238 239static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 240 /*page_code*/SMS_RIGID_DISK_PAGE, 241 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 242 /*cylinders*/ {0, 0, 0}, 243 /*heads*/ 0, 244 /*start_write_precomp*/ {0, 0, 0}, 245 /*start_reduced_current*/ {0, 0, 0}, 246 /*step_rate*/ {0, 0}, 247 /*landing_zone_cylinder*/ {0, 0, 0}, 248 /*rpl*/ 0, 249 /*rotational_offset*/ 0, 250 /*reserved1*/ 0, 251 /*rotation_rate*/ {0, 0}, 252 /*reserved2*/ {0, 0} 253}; 254 255static struct scsi_caching_page caching_page_default = { 256 /*page_code*/SMS_CACHING_PAGE, 257 /*page_length*/sizeof(struct scsi_caching_page) - 2, 258 /*flags1*/ SCP_DISC | SCP_WCE, 259 /*ret_priority*/ 0, 260 /*disable_pf_transfer_len*/ {0xff, 0xff}, 261 /*min_prefetch*/ {0, 0}, 262 /*max_prefetch*/ {0xff, 0xff}, 263 /*max_pf_ceiling*/ {0xff, 0xff}, 264 /*flags2*/ 0, 265 /*cache_segments*/ 0, 266 /*cache_seg_size*/ {0, 0}, 267 /*reserved*/ 0, 268 /*non_cache_seg_size*/ {0, 0, 0} 269}; 270 271static struct scsi_caching_page caching_page_changeable = { 272 /*page_code*/SMS_CACHING_PAGE, 273 /*page_length*/sizeof(struct scsi_caching_page) - 2, 274 /*flags1*/ 0, 275 /*ret_priority*/ 0, 276 /*disable_pf_transfer_len*/ {0, 0}, 277 /*min_prefetch*/ {0, 0}, 278 /*max_prefetch*/ {0, 0}, 279 /*max_pf_ceiling*/ {0, 0}, 280 /*flags2*/ 0, 281 /*cache_segments*/ 0, 282 /*cache_seg_size*/ {0, 0}, 283 /*reserved*/ 0, 284 /*non_cache_seg_size*/ {0, 0, 0} 285}; 286 287static struct scsi_control_page control_page_default = { 288 /*page_code*/SMS_CONTROL_MODE_PAGE, 289 /*page_length*/sizeof(struct scsi_control_page) - 2, 290 /*rlec*/0, 291 /*queue_flags*/0, 292 /*eca_and_aen*/0, 293 /*reserved*/0, 294 /*aen_holdoff_period*/{0, 0} 295}; 296 297static struct scsi_control_page control_page_changeable = { 298 /*page_code*/SMS_CONTROL_MODE_PAGE, 299 /*page_length*/sizeof(struct scsi_control_page) - 2, 300 /*rlec*/SCP_DSENSE, 301 /*queue_flags*/0, 302 /*eca_and_aen*/0, 303 /*reserved*/0, 304 /*aen_holdoff_period*/{0, 0} 305}; 306 307SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 308 309/* 310 * XXX KDM move these into the softc. 311 */ 312static int rcv_sync_msg; 313static int persis_offset; 314static uint8_t ctl_pause_rtr; 315static int ctl_is_single; 316static int index_to_aps_page; 317 318 319/* 320 * Serial number (0x80), device id (0x83), and supported pages (0x00) 321 */ 322#define SCSI_EVPD_NUM_SUPPORTED_PAGES 3 323 324static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 325 int param); 326static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 327static void ctl_init(void); 328void ctl_shutdown(void); 329static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 330static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 331static void ctl_ioctl_online(void *arg); 332static void ctl_ioctl_offline(void *arg); 333static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 334static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 335static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 336static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 337static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 338static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock); 339static int ctl_ioctl_submit_wait(union ctl_io *io); 340static void ctl_ioctl_datamove(union ctl_io *io); 341static void ctl_ioctl_done(union ctl_io *io); 342static void ctl_ioctl_hard_startstop_callback(void *arg, 343 struct cfi_metatask *metatask); 344static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 345static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 346 struct ctl_ooa *ooa_hdr); 347static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 348 struct thread *td); 349uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 350uint32_t ctl_port_idx(int port_num); 351#ifdef unused 352static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 353 uint32_t targ_target, uint32_t targ_lun, 354 int can_wait); 355static void ctl_kfree_io(union ctl_io *io); 356#endif /* unused */ 357static void ctl_free_io_internal(union ctl_io *io, int have_lock); 358static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 359 struct ctl_be_lun *be_lun, struct ctl_id target_id); 360static int ctl_free_lun(struct ctl_lun *lun); 361static void ctl_create_lun(struct ctl_be_lun *be_lun); 362/** 363static void ctl_failover_change_pages(struct ctl_softc *softc, 364 struct ctl_scsiio *ctsio, int master); 365**/ 366 367static int ctl_do_mode_select(union ctl_io *io); 368static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 369 uint64_t res_key, uint64_t sa_res_key, 370 uint8_t type, uint32_t residx, 371 struct ctl_scsiio *ctsio, 372 struct scsi_per_res_out *cdb, 373 struct scsi_per_res_out_parms* param); 374static void ctl_pro_preempt_other(struct ctl_lun *lun, 375 union ctl_ha_msg *msg); 376static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 377static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 378static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 379static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 380static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 381static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 382static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 383static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 384static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 385 union ctl_io *ooa_io); 386static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 387 union ctl_io *starting_io); 388static int ctl_check_blocked(struct ctl_lun *lun); 389static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 390 struct ctl_lun *lun, 391 struct ctl_cmd_entry *entry, 392 struct ctl_scsiio *ctsio); 393//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 394static void ctl_failover(void); 395static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 396 struct ctl_scsiio *ctsio); 397static int ctl_scsiio(struct ctl_scsiio *ctsio); 398 399static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 400static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 401 ctl_ua_type ua_type); 402static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 403 ctl_ua_type ua_type); 404static int ctl_abort_task(union ctl_io *io); 405static void ctl_run_task_queue(struct ctl_softc *ctl_softc); 406#ifdef CTL_IO_DELAY 407static void ctl_datamove_timer_wakeup(void *arg); 408static void ctl_done_timer_wakeup(void *arg); 409#endif /* CTL_IO_DELAY */ 410 411static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 412static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 413static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 414static void ctl_datamove_remote_write(union ctl_io *io); 415static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 416static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 417static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 418static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 419 ctl_ha_dt_cb callback); 420static void ctl_datamove_remote_read(union ctl_io *io); 421static void ctl_datamove_remote(union ctl_io *io); 422static int ctl_process_done(union ctl_io *io, int have_lock); 423static void ctl_work_thread(void *arg); 424 425/* 426 * Load the serialization table. This isn't very pretty, but is probably 427 * the easiest way to do it. 428 */ 429#include "ctl_ser_table.c" 430 431/* 432 * We only need to define open, close and ioctl routines for this driver. 433 */ 434static struct cdevsw ctl_cdevsw = { 435 .d_version = D_VERSION, 436 .d_flags = 0, 437 .d_open = ctl_open, 438 .d_close = ctl_close, 439 .d_ioctl = ctl_ioctl, 440 .d_name = "ctl", 441}; 442 443 444MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 445 446/* 447 * If we have the CAM SIM, we may or may not have another SIM that will 448 * cause CTL to get initialized. If not, we need to initialize it. 449 */ 450SYSINIT(ctl_init, SI_SUB_CONFIGURE, SI_ORDER_THIRD, ctl_init, NULL); 451 452static void 453ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 454 union ctl_ha_msg *msg_info) 455{ 456 struct ctl_scsiio *ctsio; 457 458 if (msg_info->hdr.original_sc == NULL) { 459 printf("%s: original_sc == NULL!\n", __func__); 460 /* XXX KDM now what? */ 461 return; 462 } 463 464 ctsio = &msg_info->hdr.original_sc->scsiio; 465 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 466 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 467 ctsio->io_hdr.status = msg_info->hdr.status; 468 ctsio->scsi_status = msg_info->scsi.scsi_status; 469 ctsio->sense_len = msg_info->scsi.sense_len; 470 ctsio->sense_residual = msg_info->scsi.sense_residual; 471 ctsio->residual = msg_info->scsi.residual; 472 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 473 sizeof(ctsio->sense_data)); 474 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 475 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen));; 476 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 477 ctl_wakeup_thread(); 478} 479 480static void 481ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 482 union ctl_ha_msg *msg_info) 483{ 484 struct ctl_scsiio *ctsio; 485 486 if (msg_info->hdr.serializing_sc == NULL) { 487 printf("%s: serializing_sc == NULL!\n", __func__); 488 /* XXX KDM now what? */ 489 return; 490 } 491 492 ctsio = &msg_info->hdr.serializing_sc->scsiio; 493#if 0 494 /* 495 * Attempt to catch the situation where an I/O has 496 * been freed, and we're using it again. 497 */ 498 if (ctsio->io_hdr.io_type == 0xff) { 499 union ctl_io *tmp_io; 500 tmp_io = (union ctl_io *)ctsio; 501 printf("%s: %p use after free!\n", __func__, 502 ctsio); 503 printf("%s: type %d msg %d cdb %x iptl: " 504 "%d:%d:%d:%d tag 0x%04x " 505 "flag %#x status %x\n", 506 __func__, 507 tmp_io->io_hdr.io_type, 508 tmp_io->io_hdr.msg_type, 509 tmp_io->scsiio.cdb[0], 510 tmp_io->io_hdr.nexus.initid.id, 511 tmp_io->io_hdr.nexus.targ_port, 512 tmp_io->io_hdr.nexus.targ_target.id, 513 tmp_io->io_hdr.nexus.targ_lun, 514 (tmp_io->io_hdr.io_type == 515 CTL_IO_TASK) ? 516 tmp_io->taskio.tag_num : 517 tmp_io->scsiio.tag_num, 518 tmp_io->io_hdr.flags, 519 tmp_io->io_hdr.status); 520 } 521#endif 522 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 523 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 524 ctl_wakeup_thread(); 525} 526 527/* 528 * ISC (Inter Shelf Communication) event handler. Events from the HA 529 * subsystem come in here. 530 */ 531static void 532ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 533{ 534 struct ctl_softc *ctl_softc; 535 union ctl_io *io; 536 struct ctl_prio *presio; 537 ctl_ha_status isc_status; 538 539 ctl_softc = control_softc; 540 io = NULL; 541 542 543#if 0 544 printf("CTL: Isc Msg event %d\n", event); 545#endif 546 if (event == CTL_HA_EVT_MSG_RECV) { 547 union ctl_ha_msg msg_info; 548 549 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 550 sizeof(msg_info), /*wait*/ 0); 551#if 0 552 printf("CTL: msg_type %d\n", msg_info.msg_type); 553#endif 554 if (isc_status != 0) { 555 printf("Error receiving message, status = %d\n", 556 isc_status); 557 return; 558 } 559 mtx_lock(&ctl_softc->ctl_lock); 560 561 switch (msg_info.hdr.msg_type) { 562 case CTL_MSG_SERIALIZE: 563#if 0 564 printf("Serialize\n"); 565#endif 566 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 567 if (io == NULL) { 568 printf("ctl_isc_event_handler: can't allocate " 569 "ctl_io!\n"); 570 /* Bad Juju */ 571 /* Need to set busy and send msg back */ 572 mtx_unlock(&ctl_softc->ctl_lock); 573 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 574 msg_info.hdr.status = CTL_SCSI_ERROR; 575 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 576 msg_info.scsi.sense_len = 0; 577 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 578 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 579 } 580 goto bailout; 581 } 582 ctl_zero_io(io); 583 // populate ctsio from msg_info 584 io->io_hdr.io_type = CTL_IO_SCSI; 585 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 586 io->io_hdr.original_sc = msg_info.hdr.original_sc; 587#if 0 588 printf("pOrig %x\n", (int)msg_info.original_sc); 589#endif 590 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 591 CTL_FLAG_IO_ACTIVE; 592 /* 593 * If we're in serialization-only mode, we don't 594 * want to go through full done processing. Thus 595 * the COPY flag. 596 * 597 * XXX KDM add another flag that is more specific. 598 */ 599 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 600 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 601 io->io_hdr.nexus = msg_info.hdr.nexus; 602#if 0 603 printf("targ %d, port %d, iid %d, lun %d\n", 604 io->io_hdr.nexus.targ_target.id, 605 io->io_hdr.nexus.targ_port, 606 io->io_hdr.nexus.initid.id, 607 io->io_hdr.nexus.targ_lun); 608#endif 609 io->scsiio.tag_num = msg_info.scsi.tag_num; 610 io->scsiio.tag_type = msg_info.scsi.tag_type; 611 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 612 CTL_MAX_CDBLEN); 613 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 614 struct ctl_cmd_entry *entry; 615 uint8_t opcode; 616 617 opcode = io->scsiio.cdb[0]; 618 entry = &ctl_cmd_table[opcode]; 619 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 620 io->io_hdr.flags |= 621 entry->flags & CTL_FLAG_DATA_MASK; 622 } 623 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 624 &io->io_hdr, links); 625 ctl_wakeup_thread(); 626 break; 627 628 /* Performed on the Originating SC, XFER mode only */ 629 case CTL_MSG_DATAMOVE: { 630 struct ctl_sg_entry *sgl; 631 int i, j; 632 633 io = msg_info.hdr.original_sc; 634 if (io == NULL) { 635 printf("%s: original_sc == NULL!\n", __func__); 636 /* XXX KDM do something here */ 637 break; 638 } 639 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 640 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 641 /* 642 * Keep track of this, we need to send it back over 643 * when the datamove is complete. 644 */ 645 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 646 647 if (msg_info.dt.sg_sequence == 0) { 648 /* 649 * XXX KDM we use the preallocated S/G list 650 * here, but we'll need to change this to 651 * dynamic allocation if we need larger S/G 652 * lists. 653 */ 654 if (msg_info.dt.kern_sg_entries > 655 sizeof(io->io_hdr.remote_sglist) / 656 sizeof(io->io_hdr.remote_sglist[0])) { 657 printf("%s: number of S/G entries " 658 "needed %u > allocated num %zd\n", 659 __func__, 660 msg_info.dt.kern_sg_entries, 661 sizeof(io->io_hdr.remote_sglist)/ 662 sizeof(io->io_hdr.remote_sglist[0])); 663 664 /* 665 * XXX KDM send a message back to 666 * the other side to shut down the 667 * DMA. The error will come back 668 * through via the normal channel. 669 */ 670 break; 671 } 672 sgl = io->io_hdr.remote_sglist; 673 memset(sgl, 0, 674 sizeof(io->io_hdr.remote_sglist)); 675 676 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 677 678 io->scsiio.kern_sg_entries = 679 msg_info.dt.kern_sg_entries; 680 io->scsiio.rem_sg_entries = 681 msg_info.dt.kern_sg_entries; 682 io->scsiio.kern_data_len = 683 msg_info.dt.kern_data_len; 684 io->scsiio.kern_total_len = 685 msg_info.dt.kern_total_len; 686 io->scsiio.kern_data_resid = 687 msg_info.dt.kern_data_resid; 688 io->scsiio.kern_rel_offset = 689 msg_info.dt.kern_rel_offset; 690 /* 691 * Clear out per-DMA flags. 692 */ 693 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 694 /* 695 * Add per-DMA flags that are set for this 696 * particular DMA request. 697 */ 698 io->io_hdr.flags |= msg_info.dt.flags & 699 CTL_FLAG_RDMA_MASK; 700 } else 701 sgl = (struct ctl_sg_entry *) 702 io->scsiio.kern_data_ptr; 703 704 for (i = msg_info.dt.sent_sg_entries, j = 0; 705 i < (msg_info.dt.sent_sg_entries + 706 msg_info.dt.cur_sg_entries); i++, j++) { 707 sgl[i].addr = msg_info.dt.sg_list[j].addr; 708 sgl[i].len = msg_info.dt.sg_list[j].len; 709 710#if 0 711 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 712 __func__, 713 msg_info.dt.sg_list[j].addr, 714 msg_info.dt.sg_list[j].len, 715 sgl[i].addr, sgl[i].len, j, i); 716#endif 717 } 718#if 0 719 memcpy(&sgl[msg_info.dt.sent_sg_entries], 720 msg_info.dt.sg_list, 721 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 722#endif 723 724 /* 725 * If this is the last piece of the I/O, we've got 726 * the full S/G list. Queue processing in the thread. 727 * Otherwise wait for the next piece. 728 */ 729 if (msg_info.dt.sg_last != 0) { 730 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 731 &io->io_hdr, links); 732 ctl_wakeup_thread(); 733 } 734 break; 735 } 736 /* Performed on the Serializing (primary) SC, XFER mode only */ 737 case CTL_MSG_DATAMOVE_DONE: { 738 if (msg_info.hdr.serializing_sc == NULL) { 739 printf("%s: serializing_sc == NULL!\n", 740 __func__); 741 /* XXX KDM now what? */ 742 break; 743 } 744 /* 745 * We grab the sense information here in case 746 * there was a failure, so we can return status 747 * back to the initiator. 748 */ 749 io = msg_info.hdr.serializing_sc; 750 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 751 io->io_hdr.status = msg_info.hdr.status; 752 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 753 io->scsiio.sense_len = msg_info.scsi.sense_len; 754 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 755 io->io_hdr.port_status = msg_info.scsi.fetd_status; 756 io->scsiio.residual = msg_info.scsi.residual; 757 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 758 sizeof(io->scsiio.sense_data)); 759 760 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 761 &io->io_hdr, links); 762 ctl_wakeup_thread(); 763 break; 764 } 765 766 /* Preformed on Originating SC, SER_ONLY mode */ 767 case CTL_MSG_R2R: 768 io = msg_info.hdr.original_sc; 769 if (io == NULL) { 770 printf("%s: Major Bummer\n", __func__); 771 mtx_unlock(&ctl_softc->ctl_lock); 772 return; 773 } else { 774#if 0 775 printf("pOrig %x\n",(int) ctsio); 776#endif 777 } 778 io->io_hdr.msg_type = CTL_MSG_R2R; 779 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 780 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 781 &io->io_hdr, links); 782 ctl_wakeup_thread(); 783 break; 784 785 /* 786 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 787 * mode. 788 * Performed on the Originating (i.e. secondary) SC in XFER 789 * mode 790 */ 791 case CTL_MSG_FINISH_IO: 792 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 793 ctl_isc_handler_finish_xfer(ctl_softc, 794 &msg_info); 795 else 796 ctl_isc_handler_finish_ser_only(ctl_softc, 797 &msg_info); 798 break; 799 800 /* Preformed on Originating SC */ 801 case CTL_MSG_BAD_JUJU: 802 io = msg_info.hdr.original_sc; 803 if (io == NULL) { 804 printf("%s: Bad JUJU!, original_sc is NULL!\n", 805 __func__); 806 break; 807 } 808 ctl_copy_sense_data(&msg_info, io); 809 /* 810 * IO should have already been cleaned up on other 811 * SC so clear this flag so we won't send a message 812 * back to finish the IO there. 813 */ 814 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 815 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 816 817 /* io = msg_info.hdr.serializing_sc; */ 818 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 819 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 820 &io->io_hdr, links); 821 ctl_wakeup_thread(); 822 break; 823 824 /* Handle resets sent from the other side */ 825 case CTL_MSG_MANAGE_TASKS: { 826 struct ctl_taskio *taskio; 827 taskio = (struct ctl_taskio *)ctl_alloc_io( 828 (void *)ctl_softc->othersc_pool); 829 if (taskio == NULL) { 830 printf("ctl_isc_event_handler: can't allocate " 831 "ctl_io!\n"); 832 /* Bad Juju */ 833 /* should I just call the proper reset func 834 here??? */ 835 mtx_unlock(&ctl_softc->ctl_lock); 836 goto bailout; 837 } 838 ctl_zero_io((union ctl_io *)taskio); 839 taskio->io_hdr.io_type = CTL_IO_TASK; 840 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 841 taskio->io_hdr.nexus = msg_info.hdr.nexus; 842 taskio->task_action = msg_info.task.task_action; 843 taskio->tag_num = msg_info.task.tag_num; 844 taskio->tag_type = msg_info.task.tag_type; 845#ifdef CTL_TIME_IO 846 taskio->io_hdr.start_time = time_uptime; 847 getbintime(&taskio->io_hdr.start_bt); 848#if 0 849 cs_prof_gettime(&taskio->io_hdr.start_ticks); 850#endif 851#endif /* CTL_TIME_IO */ 852 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, 853 &taskio->io_hdr, links); 854 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 855 ctl_wakeup_thread(); 856 break; 857 } 858 /* Persistent Reserve action which needs attention */ 859 case CTL_MSG_PERS_ACTION: 860 presio = (struct ctl_prio *)ctl_alloc_io( 861 (void *)ctl_softc->othersc_pool); 862 if (presio == NULL) { 863 printf("ctl_isc_event_handler: can't allocate " 864 "ctl_io!\n"); 865 /* Bad Juju */ 866 /* Need to set busy and send msg back */ 867 mtx_unlock(&ctl_softc->ctl_lock); 868 goto bailout; 869 } 870 ctl_zero_io((union ctl_io *)presio); 871 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 872 presio->pr_msg = msg_info.pr; 873 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 874 &presio->io_hdr, links); 875 ctl_wakeup_thread(); 876 break; 877 case CTL_MSG_SYNC_FE: 878 rcv_sync_msg = 1; 879 break; 880 case CTL_MSG_APS_LOCK: { 881 // It's quicker to execute this then to 882 // queue it. 883 struct ctl_lun *lun; 884 struct ctl_page_index *page_index; 885 struct copan_aps_subpage *current_sp; 886 887 lun = ctl_softc->ctl_luns[msg_info.hdr.nexus.targ_lun]; 888 page_index = &lun->mode_pages.index[index_to_aps_page]; 889 current_sp = (struct copan_aps_subpage *) 890 (page_index->page_data + 891 (page_index->page_len * CTL_PAGE_CURRENT)); 892 893 current_sp->lock_active = msg_info.aps.lock_flag; 894 break; 895 } 896 default: 897 printf("How did I get here?\n"); 898 } 899 mtx_unlock(&ctl_softc->ctl_lock); 900 } else if (event == CTL_HA_EVT_MSG_SENT) { 901 if (param != CTL_HA_STATUS_SUCCESS) { 902 printf("Bad status from ctl_ha_msg_send status %d\n", 903 param); 904 } 905 return; 906 } else if (event == CTL_HA_EVT_DISCONNECT) { 907 printf("CTL: Got a disconnect from Isc\n"); 908 return; 909 } else { 910 printf("ctl_isc_event_handler: Unknown event %d\n", event); 911 return; 912 } 913 914bailout: 915 return; 916} 917 918static void 919ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 920{ 921 struct scsi_sense_data *sense; 922 923 sense = &dest->scsiio.sense_data; 924 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 925 dest->scsiio.scsi_status = src->scsi.scsi_status; 926 dest->scsiio.sense_len = src->scsi.sense_len; 927 dest->io_hdr.status = src->hdr.status; 928} 929 930static void 931ctl_init(void) 932{ 933 struct ctl_softc *softc; 934 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 935 struct ctl_frontend *fe; 936 struct ctl_lun *lun; 937 uint8_t sc_id =0; 938#if 0 939 int i; 940#endif 941 int retval; 942 //int isc_retval; 943 944 retval = 0; 945 ctl_pause_rtr = 0; 946 rcv_sync_msg = 0; 947 948 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, M_WAITOK); 949 softc = control_softc; 950 951 memset(softc, 0, sizeof(*softc)); 952 953 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 954 "cam/ctl"); 955 956 softc->dev->si_drv1 = softc; 957 958 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 959 softc->open_count = 0; 960 961 /* 962 * Default to actually sending a SYNCHRONIZE CACHE command down to 963 * the drive. 964 */ 965 softc->flags = CTL_FLAG_REAL_SYNC; 966 967 /* 968 * In Copan's HA scheme, the "master" and "slave" roles are 969 * figured out through the slot the controller is in. Although it 970 * is an active/active system, someone has to be in charge. 971 */ 972#ifdef NEEDTOPORT 973 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 974#endif 975 976 if (sc_id == 0) { 977 softc->flags |= CTL_FLAG_MASTER_SHELF; 978 persis_offset = 0; 979 } else 980 persis_offset = CTL_MAX_INITIATORS; 981 982 /* 983 * XXX KDM need to figure out where we want to get our target ID 984 * and WWID. Is it different on each port? 985 */ 986 softc->target.id = 0; 987 softc->target.wwid[0] = 0x12345678; 988 softc->target.wwid[1] = 0x87654321; 989 STAILQ_INIT(&softc->lun_list); 990 STAILQ_INIT(&softc->pending_lun_queue); 991 STAILQ_INIT(&softc->task_queue); 992 STAILQ_INIT(&softc->incoming_queue); 993 STAILQ_INIT(&softc->rtr_queue); 994 STAILQ_INIT(&softc->done_queue); 995 STAILQ_INIT(&softc->isc_queue); 996 STAILQ_INIT(&softc->fe_list); 997 STAILQ_INIT(&softc->be_list); 998 STAILQ_INIT(&softc->io_pools); 999 1000 lun = &softc->lun; 1001 1002 /* 1003 * We don't bother calling these with ctl_lock held here, because, 1004 * in theory, no one else can try to do anything while we're in our 1005 * module init routine. 1006 */ 1007 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1008 &internal_pool)!= 0){ 1009 printf("ctl: can't allocate %d entry internal pool, " 1010 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1011 return; 1012 } 1013 1014 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1015 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1016 printf("ctl: can't allocate %d entry emergency pool, " 1017 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1018 ctl_pool_free(softc, internal_pool); 1019 return; 1020 } 1021 1022 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1023 &other_pool) != 0) 1024 { 1025 printf("ctl: can't allocate %d entry other SC pool, " 1026 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1027 ctl_pool_free(softc, internal_pool); 1028 ctl_pool_free(softc, emergency_pool); 1029 return; 1030 } 1031 1032 softc->internal_pool = internal_pool; 1033 softc->emergency_pool = emergency_pool; 1034 softc->othersc_pool = other_pool; 1035 1036 ctl_pool_acquire(internal_pool); 1037 ctl_pool_acquire(emergency_pool); 1038 ctl_pool_acquire(other_pool); 1039 1040 /* 1041 * We used to allocate a processor LUN here. The new scheme is to 1042 * just let the user allocate LUNs as he sees fit. 1043 */ 1044#if 0 1045 mtx_lock(&softc->ctl_lock); 1046 ctl_alloc_lun(softc, lun, /*be_lun*/NULL, /*target*/softc->target); 1047 mtx_unlock(&softc->ctl_lock); 1048#endif 1049 1050 if (kproc_create(ctl_work_thread, softc, &softc->work_thread, 0, 0, 1051 "ctl_thrd") != 0) { 1052 printf("error creating CTL work thread!\n"); 1053 ctl_free_lun(lun); 1054 ctl_pool_free(softc, internal_pool); 1055 ctl_pool_free(softc, emergency_pool); 1056 ctl_pool_free(softc, other_pool); 1057 return; 1058 } 1059 printf("ctl: CAM Target Layer loaded\n"); 1060 1061 /* 1062 * Initialize the initiator and portname mappings 1063 */ 1064 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1065 1066 /* 1067 * Initialize the ioctl front end. 1068 */ 1069 fe = &softc->ioctl_info.fe; 1070 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1071 fe->port_type = CTL_PORT_IOCTL; 1072 fe->num_requested_ctl_io = 100; 1073 fe->port_name = softc->ioctl_info.port_name; 1074 fe->port_online = ctl_ioctl_online; 1075 fe->port_offline = ctl_ioctl_offline; 1076 fe->onoff_arg = &softc->ioctl_info; 1077 fe->targ_enable = ctl_ioctl_targ_enable; 1078 fe->targ_disable = ctl_ioctl_targ_disable; 1079 fe->lun_enable = ctl_ioctl_lun_enable; 1080 fe->lun_disable = ctl_ioctl_lun_disable; 1081 fe->targ_lun_arg = &softc->ioctl_info; 1082 fe->fe_datamove = ctl_ioctl_datamove; 1083 fe->fe_done = ctl_ioctl_done; 1084 fe->max_targets = 15; 1085 fe->max_target_id = 15; 1086 1087 if (ctl_frontend_register(&softc->ioctl_info.fe, 1088 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1089 printf("ctl: ioctl front end registration failed, will " 1090 "continue anyway\n"); 1091 } 1092 1093#ifdef CTL_IO_DELAY 1094 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1095 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1096 sizeof(struct callout), CTL_TIMER_BYTES); 1097 return; 1098 } 1099#endif /* CTL_IO_DELAY */ 1100 1101} 1102 1103void 1104ctl_shutdown(void) 1105{ 1106 struct ctl_softc *softc; 1107 struct ctl_lun *lun, *next_lun; 1108 struct ctl_io_pool *pool, *next_pool; 1109 1110 softc = (struct ctl_softc *)control_softc; 1111 1112 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1113 printf("ctl: ioctl front end deregistration failed\n"); 1114 1115 mtx_lock(&softc->ctl_lock); 1116 1117 /* 1118 * Free up each LUN. 1119 */ 1120 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1121 next_lun = STAILQ_NEXT(lun, links); 1122 ctl_free_lun(lun); 1123 } 1124 1125 /* 1126 * This will rip the rug out from under any FETDs or anyone else 1127 * that has a pool allocated. Since we increment our module 1128 * refcount any time someone outside the main CTL module allocates 1129 * a pool, we shouldn't have any problems here. The user won't be 1130 * able to unload the CTL module until client modules have 1131 * successfully unloaded. 1132 */ 1133 for (pool = STAILQ_FIRST(&softc->io_pools); pool != NULL; 1134 pool = next_pool) { 1135 next_pool = STAILQ_NEXT(pool, links); 1136 ctl_pool_free(softc, pool); 1137 } 1138 1139 mtx_unlock(&softc->ctl_lock); 1140 1141#if 0 1142 ctl_shutdown_thread(softc->work_thread); 1143#endif 1144 1145 mtx_destroy(&softc->ctl_lock); 1146 1147 destroy_dev(softc->dev); 1148 1149 printf("ctl: CAM Target Layer unloaded\n"); 1150} 1151 1152/* 1153 * XXX KDM should we do some access checks here? Bump a reference count to 1154 * prevent a CTL module from being unloaded while someone has it open? 1155 */ 1156static int 1157ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1158{ 1159 return (0); 1160} 1161 1162static int 1163ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1164{ 1165 return (0); 1166} 1167 1168int 1169ctl_port_enable(ctl_port_type port_type) 1170{ 1171 struct ctl_softc *softc; 1172 struct ctl_frontend *fe; 1173 1174 if (ctl_is_single == 0) { 1175 union ctl_ha_msg msg_info; 1176 int isc_retval; 1177 1178#if 0 1179 printf("%s: HA mode, synchronizing frontend enable\n", 1180 __func__); 1181#endif 1182 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1183 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1184 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1185 printf("Sync msg send error retval %d\n", isc_retval); 1186 } 1187 if (!rcv_sync_msg) { 1188 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1189 sizeof(msg_info), 1); 1190 } 1191#if 0 1192 printf("CTL:Frontend Enable\n"); 1193 } else { 1194 printf("%s: single mode, skipping frontend synchronization\n", 1195 __func__); 1196#endif 1197 } 1198 1199 softc = control_softc; 1200 1201 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1202 if (port_type & fe->port_type) 1203 { 1204#if 0 1205 printf("port %d\n", fe->targ_port); 1206#endif 1207 ctl_frontend_online(fe); 1208 } 1209 } 1210 1211 return (0); 1212} 1213 1214int 1215ctl_port_disable(ctl_port_type port_type) 1216{ 1217 struct ctl_softc *softc; 1218 struct ctl_frontend *fe; 1219 1220 softc = control_softc; 1221 1222 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1223 if (port_type & fe->port_type) 1224 ctl_frontend_offline(fe); 1225 } 1226 1227 return (0); 1228} 1229 1230/* 1231 * Returns 0 for success, 1 for failure. 1232 * Currently the only failure mode is if there aren't enough entries 1233 * allocated. So, in case of a failure, look at num_entries_dropped, 1234 * reallocate and try again. 1235 */ 1236int 1237ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1238 int *num_entries_filled, int *num_entries_dropped, 1239 ctl_port_type port_type, int no_virtual) 1240{ 1241 struct ctl_softc *softc; 1242 struct ctl_frontend *fe; 1243 int entries_dropped, entries_filled; 1244 int retval; 1245 int i; 1246 1247 softc = control_softc; 1248 1249 retval = 0; 1250 entries_filled = 0; 1251 entries_dropped = 0; 1252 1253 i = 0; 1254 mtx_lock(&softc->ctl_lock); 1255 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1256 struct ctl_port_entry *entry; 1257 1258 if ((fe->port_type & port_type) == 0) 1259 continue; 1260 1261 if ((no_virtual != 0) 1262 && (fe->virtual_port != 0)) 1263 continue; 1264 1265 if (entries_filled >= num_entries_alloced) { 1266 entries_dropped++; 1267 continue; 1268 } 1269 entry = &entries[i]; 1270 1271 entry->port_type = fe->port_type; 1272 strlcpy(entry->port_name, fe->port_name, 1273 sizeof(entry->port_name)); 1274 entry->physical_port = fe->physical_port; 1275 entry->virtual_port = fe->virtual_port; 1276 entry->wwnn = fe->wwnn; 1277 entry->wwpn = fe->wwpn; 1278 1279 i++; 1280 entries_filled++; 1281 } 1282 1283 mtx_unlock(&softc->ctl_lock); 1284 1285 if (entries_dropped > 0) 1286 retval = 1; 1287 1288 *num_entries_dropped = entries_dropped; 1289 *num_entries_filled = entries_filled; 1290 1291 return (retval); 1292} 1293 1294static void 1295ctl_ioctl_online(void *arg) 1296{ 1297 struct ctl_ioctl_info *ioctl_info; 1298 1299 ioctl_info = (struct ctl_ioctl_info *)arg; 1300 1301 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1302} 1303 1304static void 1305ctl_ioctl_offline(void *arg) 1306{ 1307 struct ctl_ioctl_info *ioctl_info; 1308 1309 ioctl_info = (struct ctl_ioctl_info *)arg; 1310 1311 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1312} 1313 1314/* 1315 * Remove an initiator by port number and initiator ID. 1316 * Returns 0 for success, 1 for failure. 1317 * Assumes the caller does NOT hold the CTL lock. 1318 */ 1319int 1320ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1321{ 1322 struct ctl_softc *softc; 1323 1324 softc = control_softc; 1325 1326 if ((targ_port < 0) 1327 || (targ_port > CTL_MAX_PORTS)) { 1328 printf("%s: invalid port number %d\n", __func__, targ_port); 1329 return (1); 1330 } 1331 if (iid > CTL_MAX_INIT_PER_PORT) { 1332 printf("%s: initiator ID %u > maximun %u!\n", 1333 __func__, iid, CTL_MAX_INIT_PER_PORT); 1334 return (1); 1335 } 1336 1337 mtx_lock(&softc->ctl_lock); 1338 1339 softc->wwpn_iid[targ_port][iid].in_use = 0; 1340 1341 mtx_unlock(&softc->ctl_lock); 1342 1343 return (0); 1344} 1345 1346/* 1347 * Add an initiator to the initiator map. 1348 * Returns 0 for success, 1 for failure. 1349 * Assumes the caller does NOT hold the CTL lock. 1350 */ 1351int 1352ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1353{ 1354 struct ctl_softc *softc; 1355 int retval; 1356 1357 softc = control_softc; 1358 1359 retval = 0; 1360 1361 if ((targ_port < 0) 1362 || (targ_port > CTL_MAX_PORTS)) { 1363 printf("%s: invalid port number %d\n", __func__, targ_port); 1364 return (1); 1365 } 1366 if (iid > CTL_MAX_INIT_PER_PORT) { 1367 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1368 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1369 return (1); 1370 } 1371 1372 mtx_lock(&softc->ctl_lock); 1373 1374 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1375 /* 1376 * We don't treat this as an error. 1377 */ 1378 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1379 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1380 __func__, targ_port, iid, (uintmax_t)wwpn); 1381 goto bailout; 1382 } 1383 1384 /* 1385 * This is an error, but what do we do about it? The 1386 * driver is telling us we have a new WWPN for this 1387 * initiator ID, so we pretty much need to use it. 1388 */ 1389 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1390 "still at that address\n", __func__, targ_port, iid, 1391 (uintmax_t)wwpn, 1392 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1393 1394 /* 1395 * XXX KDM clear have_ca and ua_pending on each LUN for 1396 * this initiator. 1397 */ 1398 } 1399 softc->wwpn_iid[targ_port][iid].in_use = 1; 1400 softc->wwpn_iid[targ_port][iid].iid = iid; 1401 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1402 softc->wwpn_iid[targ_port][iid].port = targ_port; 1403 1404bailout: 1405 1406 mtx_unlock(&softc->ctl_lock); 1407 1408 return (retval); 1409} 1410 1411/* 1412 * XXX KDM should we pretend to do something in the target/lun 1413 * enable/disable functions? 1414 */ 1415static int 1416ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1417{ 1418 return (0); 1419} 1420 1421static int 1422ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1423{ 1424 return (0); 1425} 1426 1427static int 1428ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1429{ 1430 return (0); 1431} 1432 1433static int 1434ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1435{ 1436 return (0); 1437} 1438 1439/* 1440 * Data movement routine for the CTL ioctl frontend port. 1441 */ 1442static int 1443ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1444{ 1445 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1446 struct ctl_sg_entry ext_entry, kern_entry; 1447 int ext_sglen, ext_sg_entries, kern_sg_entries; 1448 int ext_sg_start, ext_offset; 1449 int len_to_copy, len_copied; 1450 int kern_watermark, ext_watermark; 1451 int ext_sglist_malloced; 1452 int i, j; 1453 1454 ext_sglist_malloced = 0; 1455 ext_sg_start = 0; 1456 ext_offset = 0; 1457 1458 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1459 1460 /* 1461 * If this flag is set, fake the data transfer. 1462 */ 1463 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1464 ctsio->ext_data_filled = ctsio->ext_data_len; 1465 goto bailout; 1466 } 1467 1468 /* 1469 * To simplify things here, if we have a single buffer, stick it in 1470 * a S/G entry and just make it a single entry S/G list. 1471 */ 1472 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1473 int len_seen; 1474 1475 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1476 1477 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1478 M_WAITOK); 1479 if (ext_sglist == NULL) { 1480 ctl_set_internal_failure(ctsio, 1481 /*sks_valid*/ 0, 1482 /*retry_count*/ 0); 1483 return (CTL_RETVAL_COMPLETE); 1484 } 1485 ext_sglist_malloced = 1; 1486 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1487 ext_sglen) != 0) { 1488 ctl_set_internal_failure(ctsio, 1489 /*sks_valid*/ 0, 1490 /*retry_count*/ 0); 1491 goto bailout; 1492 } 1493 ext_sg_entries = ctsio->ext_sg_entries; 1494 len_seen = 0; 1495 for (i = 0; i < ext_sg_entries; i++) { 1496 if ((len_seen + ext_sglist[i].len) >= 1497 ctsio->ext_data_filled) { 1498 ext_sg_start = i; 1499 ext_offset = ctsio->ext_data_filled - len_seen; 1500 break; 1501 } 1502 len_seen += ext_sglist[i].len; 1503 } 1504 } else { 1505 ext_sglist = &ext_entry; 1506 ext_sglist->addr = ctsio->ext_data_ptr; 1507 ext_sglist->len = ctsio->ext_data_len; 1508 ext_sg_entries = 1; 1509 ext_sg_start = 0; 1510 ext_offset = ctsio->ext_data_filled; 1511 } 1512 1513 if (ctsio->kern_sg_entries > 0) { 1514 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1515 kern_sg_entries = ctsio->kern_sg_entries; 1516 } else { 1517 kern_sglist = &kern_entry; 1518 kern_sglist->addr = ctsio->kern_data_ptr; 1519 kern_sglist->len = ctsio->kern_data_len; 1520 kern_sg_entries = 1; 1521 } 1522 1523 1524 kern_watermark = 0; 1525 ext_watermark = ext_offset; 1526 len_copied = 0; 1527 for (i = ext_sg_start, j = 0; 1528 i < ext_sg_entries && j < kern_sg_entries;) { 1529 uint8_t *ext_ptr, *kern_ptr; 1530 1531 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1532 kern_sglist[j].len - kern_watermark); 1533 1534 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1535 ext_ptr = ext_ptr + ext_watermark; 1536 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1537 /* 1538 * XXX KDM fix this! 1539 */ 1540 panic("need to implement bus address support"); 1541#if 0 1542 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1543#endif 1544 } else 1545 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1546 kern_ptr = kern_ptr + kern_watermark; 1547 1548 kern_watermark += len_to_copy; 1549 ext_watermark += len_to_copy; 1550 1551 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1552 CTL_FLAG_DATA_IN) { 1553 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1554 "bytes to user\n", len_to_copy)); 1555 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1556 "to %p\n", kern_ptr, ext_ptr)); 1557 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1558 ctl_set_internal_failure(ctsio, 1559 /*sks_valid*/ 0, 1560 /*retry_count*/ 0); 1561 goto bailout; 1562 } 1563 } else { 1564 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1565 "bytes from user\n", len_to_copy)); 1566 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1567 "to %p\n", ext_ptr, kern_ptr)); 1568 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1569 ctl_set_internal_failure(ctsio, 1570 /*sks_valid*/ 0, 1571 /*retry_count*/0); 1572 goto bailout; 1573 } 1574 } 1575 1576 len_copied += len_to_copy; 1577 1578 if (ext_sglist[i].len == ext_watermark) { 1579 i++; 1580 ext_watermark = 0; 1581 } 1582 1583 if (kern_sglist[j].len == kern_watermark) { 1584 j++; 1585 kern_watermark = 0; 1586 } 1587 } 1588 1589 ctsio->ext_data_filled += len_copied; 1590 1591 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1592 "kern_sg_entries: %d\n", ext_sg_entries, 1593 kern_sg_entries)); 1594 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1595 "kern_data_len = %d\n", ctsio->ext_data_len, 1596 ctsio->kern_data_len)); 1597 1598 1599 /* XXX KDM set residual?? */ 1600bailout: 1601 1602 if (ext_sglist_malloced != 0) 1603 free(ext_sglist, M_CTL); 1604 1605 return (CTL_RETVAL_COMPLETE); 1606} 1607 1608/* 1609 * Serialize a command that went down the "wrong" side, and so was sent to 1610 * this controller for execution. The logic is a little different than the 1611 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1612 * sent back to the other side, but in the success case, we execute the 1613 * command on this side (XFER mode) or tell the other side to execute it 1614 * (SER_ONLY mode). 1615 */ 1616static int 1617ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock) 1618{ 1619 struct ctl_softc *ctl_softc; 1620 union ctl_ha_msg msg_info; 1621 struct ctl_lun *lun; 1622 int retval = 0; 1623 1624 ctl_softc = control_softc; 1625 if (have_lock == 0) 1626 mtx_lock(&ctl_softc->ctl_lock); 1627 1628 lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun]; 1629 if (lun==NULL) 1630 { 1631 /* 1632 * Why isn't LUN defined? The other side wouldn't 1633 * send a cmd if the LUN is undefined. 1634 */ 1635 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1636 1637 /* "Logical unit not supported" */ 1638 ctl_set_sense_data(&msg_info.scsi.sense_data, 1639 lun, 1640 /*sense_format*/SSD_TYPE_NONE, 1641 /*current_error*/ 1, 1642 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1643 /*asc*/ 0x25, 1644 /*ascq*/ 0x00, 1645 SSD_ELEM_NONE); 1646 1647 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1648 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1649 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1650 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1651 msg_info.hdr.serializing_sc = NULL; 1652 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1653 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1654 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1655 } 1656 if (have_lock == 0) 1657 mtx_unlock(&ctl_softc->ctl_lock); 1658 return(1); 1659 1660 } 1661 1662 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1663 1664 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1665 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1666 ooa_links))) { 1667 case CTL_ACTION_BLOCK: 1668 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1669 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1670 blocked_links); 1671 break; 1672 case CTL_ACTION_PASS: 1673 case CTL_ACTION_SKIP: 1674 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1675 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1676 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 1677 &ctsio->io_hdr, links); 1678 } else { 1679 1680 /* send msg back to other side */ 1681 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1682 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1683 msg_info.hdr.msg_type = CTL_MSG_R2R; 1684#if 0 1685 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1686#endif 1687 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1688 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1689 } 1690 } 1691 break; 1692 case CTL_ACTION_OVERLAP: 1693 /* OVERLAPPED COMMANDS ATTEMPTED */ 1694 ctl_set_sense_data(&msg_info.scsi.sense_data, 1695 lun, 1696 /*sense_format*/SSD_TYPE_NONE, 1697 /*current_error*/ 1, 1698 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1699 /*asc*/ 0x4E, 1700 /*ascq*/ 0x00, 1701 SSD_ELEM_NONE); 1702 1703 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1704 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1705 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1706 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1707 msg_info.hdr.serializing_sc = NULL; 1708 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1709#if 0 1710 printf("BAD JUJU:Major Bummer Overlap\n"); 1711#endif 1712 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1713 retval = 1; 1714 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1715 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1716 } 1717 break; 1718 case CTL_ACTION_OVERLAP_TAG: 1719 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1720 ctl_set_sense_data(&msg_info.scsi.sense_data, 1721 lun, 1722 /*sense_format*/SSD_TYPE_NONE, 1723 /*current_error*/ 1, 1724 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1725 /*asc*/ 0x4D, 1726 /*ascq*/ ctsio->tag_num & 0xff, 1727 SSD_ELEM_NONE); 1728 1729 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1730 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1731 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1732 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1733 msg_info.hdr.serializing_sc = NULL; 1734 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1735#if 0 1736 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1737#endif 1738 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1739 retval = 1; 1740 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1741 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1742 } 1743 break; 1744 case CTL_ACTION_ERROR: 1745 default: 1746 /* "Internal target failure" */ 1747 ctl_set_sense_data(&msg_info.scsi.sense_data, 1748 lun, 1749 /*sense_format*/SSD_TYPE_NONE, 1750 /*current_error*/ 1, 1751 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1752 /*asc*/ 0x44, 1753 /*ascq*/ 0x00, 1754 SSD_ELEM_NONE); 1755 1756 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1757 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1758 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1759 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1760 msg_info.hdr.serializing_sc = NULL; 1761 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1762#if 0 1763 printf("BAD JUJU:Major Bummer HW Error\n"); 1764#endif 1765 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1766 retval = 1; 1767 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1768 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1769 } 1770 break; 1771 } 1772 if (have_lock == 0) 1773 mtx_unlock(&ctl_softc->ctl_lock); 1774 return (retval); 1775} 1776 1777static int 1778ctl_ioctl_submit_wait(union ctl_io *io) 1779{ 1780 struct ctl_fe_ioctl_params params; 1781 ctl_fe_ioctl_state last_state; 1782 int done, retval; 1783 1784 retval = 0; 1785 1786 bzero(¶ms, sizeof(params)); 1787 1788 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1789 cv_init(¶ms.sem, "ctlioccv"); 1790 params.state = CTL_IOCTL_INPROG; 1791 last_state = params.state; 1792 1793 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1794 1795 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1796 1797 /* This shouldn't happen */ 1798 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1799 return (retval); 1800 1801 done = 0; 1802 1803 do { 1804 mtx_lock(¶ms.ioctl_mtx); 1805 /* 1806 * Check the state here, and don't sleep if the state has 1807 * already changed (i.e. wakeup has already occured, but we 1808 * weren't waiting yet). 1809 */ 1810 if (params.state == last_state) { 1811 /* XXX KDM cv_wait_sig instead? */ 1812 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1813 } 1814 last_state = params.state; 1815 1816 switch (params.state) { 1817 case CTL_IOCTL_INPROG: 1818 /* Why did we wake up? */ 1819 /* XXX KDM error here? */ 1820 mtx_unlock(¶ms.ioctl_mtx); 1821 break; 1822 case CTL_IOCTL_DATAMOVE: 1823 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1824 1825 /* 1826 * change last_state back to INPROG to avoid 1827 * deadlock on subsequent data moves. 1828 */ 1829 params.state = last_state = CTL_IOCTL_INPROG; 1830 1831 mtx_unlock(¶ms.ioctl_mtx); 1832 ctl_ioctl_do_datamove(&io->scsiio); 1833 /* 1834 * Note that in some cases, most notably writes, 1835 * this will queue the I/O and call us back later. 1836 * In other cases, generally reads, this routine 1837 * will immediately call back and wake us up, 1838 * probably using our own context. 1839 */ 1840 io->scsiio.be_move_done(io); 1841 break; 1842 case CTL_IOCTL_DONE: 1843 mtx_unlock(¶ms.ioctl_mtx); 1844 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1845 done = 1; 1846 break; 1847 default: 1848 mtx_unlock(¶ms.ioctl_mtx); 1849 /* XXX KDM error here? */ 1850 break; 1851 } 1852 } while (done == 0); 1853 1854 mtx_destroy(¶ms.ioctl_mtx); 1855 cv_destroy(¶ms.sem); 1856 1857 return (CTL_RETVAL_COMPLETE); 1858} 1859 1860static void 1861ctl_ioctl_datamove(union ctl_io *io) 1862{ 1863 struct ctl_fe_ioctl_params *params; 1864 1865 params = (struct ctl_fe_ioctl_params *) 1866 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1867 1868 mtx_lock(¶ms->ioctl_mtx); 1869 params->state = CTL_IOCTL_DATAMOVE; 1870 cv_broadcast(¶ms->sem); 1871 mtx_unlock(¶ms->ioctl_mtx); 1872} 1873 1874static void 1875ctl_ioctl_done(union ctl_io *io) 1876{ 1877 struct ctl_fe_ioctl_params *params; 1878 1879 params = (struct ctl_fe_ioctl_params *) 1880 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1881 1882 mtx_lock(¶ms->ioctl_mtx); 1883 params->state = CTL_IOCTL_DONE; 1884 cv_broadcast(¶ms->sem); 1885 mtx_unlock(¶ms->ioctl_mtx); 1886} 1887 1888static void 1889ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1890{ 1891 struct ctl_fe_ioctl_startstop_info *sd_info; 1892 1893 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1894 1895 sd_info->hs_info.status = metatask->status; 1896 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1897 sd_info->hs_info.luns_complete = 1898 metatask->taskinfo.startstop.luns_complete; 1899 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1900 1901 cv_broadcast(&sd_info->sem); 1902} 1903 1904static void 1905ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1906{ 1907 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1908 1909 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1910 1911 mtx_lock(fe_bbr_info->lock); 1912 fe_bbr_info->bbr_info->status = metatask->status; 1913 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1914 fe_bbr_info->wakeup_done = 1; 1915 mtx_unlock(fe_bbr_info->lock); 1916 1917 cv_broadcast(&fe_bbr_info->sem); 1918} 1919 1920/* 1921 * Must be called with the ctl_lock held. 1922 * Returns 0 for success, errno for failure. 1923 */ 1924static int 1925ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1926 struct ctl_ooa *ooa_hdr) 1927{ 1928 union ctl_io *io; 1929 int retval; 1930 1931 retval = 0; 1932 1933 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 1934 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 1935 ooa_links)) { 1936 struct ctl_ooa_entry *cur_entry, entry; 1937 1938 /* 1939 * If we've got more than we can fit, just count the 1940 * remaining entries. 1941 */ 1942 if (*cur_fill_num >= ooa_hdr->alloc_num) 1943 continue; 1944 1945 cur_entry = &ooa_hdr->entries[*cur_fill_num]; 1946 1947 bzero(&entry, sizeof(entry)); 1948 1949 entry.tag_num = io->scsiio.tag_num; 1950 entry.lun_num = lun->lun; 1951#ifdef CTL_TIME_IO 1952 entry.start_bt = io->io_hdr.start_bt; 1953#endif 1954 bcopy(io->scsiio.cdb, entry.cdb, io->scsiio.cdb_len); 1955 entry.cdb_len = io->scsiio.cdb_len; 1956 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 1957 entry.cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 1958 1959 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 1960 entry.cmd_flags |= CTL_OOACMD_FLAG_DMA; 1961 1962 if (io->io_hdr.flags & CTL_FLAG_ABORT) 1963 entry.cmd_flags |= CTL_OOACMD_FLAG_ABORT; 1964 1965 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 1966 entry.cmd_flags |= CTL_OOACMD_FLAG_RTR; 1967 1968 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 1969 entry.cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 1970 1971 retval = copyout(&entry, cur_entry, sizeof(entry)); 1972 1973 if (retval != 0) 1974 break; 1975 } 1976 1977 return (retval); 1978} 1979 1980static void * 1981ctl_copyin_alloc(void *user_addr, int len, char *error_str, 1982 size_t error_str_len) 1983{ 1984 void *kptr; 1985 1986 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 1987 if (kptr == NULL) { 1988 snprintf(error_str, error_str_len, "Cannot allocate %d bytes", 1989 len); 1990 return (NULL); 1991 } 1992 1993 if (copyin(user_addr, kptr, len) != 0) { 1994 snprintf(error_str, error_str_len, "Error copying %d bytes " 1995 "from user address %p to kernel address %p", len, 1996 user_addr, kptr); 1997 free(kptr, M_CTL); 1998 return (NULL); 1999 } 2000 2001 return (kptr); 2002} 2003 2004static void 2005ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2006{ 2007 int i; 2008 2009 if (be_args == NULL) 2010 return; 2011 2012 for (i = 0; i < num_be_args; i++) { 2013 free(be_args[i].kname, M_CTL); 2014 free(be_args[i].kvalue, M_CTL); 2015 } 2016 2017 free(be_args, M_CTL); 2018} 2019 2020static struct ctl_be_arg * 2021ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2022 char *error_str, size_t error_str_len) 2023{ 2024 struct ctl_be_arg *args; 2025 int i; 2026 2027 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2028 error_str, error_str_len); 2029 2030 if (args == NULL) 2031 goto bailout; 2032 2033 for (i = 0; i < num_be_args; i++) { 2034 uint8_t *tmpptr; 2035 2036 args[i].kname = ctl_copyin_alloc(args[i].name, 2037 args[i].namelen, error_str, error_str_len); 2038 if (args[i].kname == NULL) 2039 goto bailout; 2040 2041 if (args[i].kname[args[i].namelen - 1] != '\0') { 2042 snprintf(error_str, error_str_len, "Argument %d " 2043 "name is not NUL-terminated", i); 2044 goto bailout; 2045 } 2046 2047 args[i].kvalue = NULL; 2048 2049 tmpptr = ctl_copyin_alloc(args[i].value, 2050 args[i].vallen, error_str, error_str_len); 2051 if (tmpptr == NULL) 2052 goto bailout; 2053 2054 args[i].kvalue = tmpptr; 2055 2056 if ((args[i].flags & CTL_BEARG_ASCII) 2057 && (tmpptr[args[i].vallen - 1] != '\0')) { 2058 snprintf(error_str, error_str_len, "Argument %d " 2059 "value is not NUL-terminated", i); 2060 goto bailout; 2061 } 2062 } 2063 2064 return (args); 2065bailout: 2066 2067 ctl_free_args(num_be_args, args); 2068 2069 return (NULL); 2070} 2071 2072/* 2073 * Escape characters that are illegal or not recommended in XML. 2074 */ 2075int 2076ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2077{ 2078 int retval; 2079 2080 retval = 0; 2081 2082 for (; *str; str++) { 2083 switch (*str) { 2084 case '&': 2085 retval = sbuf_printf(sb, "&"); 2086 break; 2087 case '>': 2088 retval = sbuf_printf(sb, ">"); 2089 break; 2090 case '<': 2091 retval = sbuf_printf(sb, "<"); 2092 break; 2093 default: 2094 retval = sbuf_putc(sb, *str); 2095 break; 2096 } 2097 2098 if (retval != 0) 2099 break; 2100 2101 } 2102 2103 return (retval); 2104} 2105 2106static int 2107ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2108 struct thread *td) 2109{ 2110 struct ctl_softc *softc; 2111 int retval; 2112 2113 softc = control_softc; 2114 2115 retval = 0; 2116 2117 switch (cmd) { 2118 case CTL_IO: { 2119 union ctl_io *io; 2120 void *pool_tmp; 2121 2122 /* 2123 * If we haven't been "enabled", don't allow any SCSI I/O 2124 * to this FETD. 2125 */ 2126 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2127 retval = -EPERM; 2128 break; 2129 } 2130 2131 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2132 if (io == NULL) { 2133 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2134 retval = -ENOSPC; 2135 break; 2136 } 2137 2138 /* 2139 * Need to save the pool reference so it doesn't get 2140 * spammed by the user's ctl_io. 2141 */ 2142 pool_tmp = io->io_hdr.pool; 2143 2144 memcpy(io, (void *)addr, sizeof(*io)); 2145 2146 io->io_hdr.pool = pool_tmp; 2147 /* 2148 * No status yet, so make sure the status is set properly. 2149 */ 2150 io->io_hdr.status = CTL_STATUS_NONE; 2151 2152 /* 2153 * The user sets the initiator ID, target and LUN IDs. 2154 */ 2155 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2156 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2157 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2158 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2159 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2160 2161 retval = ctl_ioctl_submit_wait(io); 2162 2163 if (retval != 0) { 2164 ctl_free_io(io); 2165 break; 2166 } 2167 2168 memcpy((void *)addr, io, sizeof(*io)); 2169 2170 /* return this to our pool */ 2171 ctl_free_io(io); 2172 2173 break; 2174 } 2175 case CTL_ENABLE_PORT: 2176 case CTL_DISABLE_PORT: 2177 case CTL_SET_PORT_WWNS: { 2178 struct ctl_frontend *fe; 2179 struct ctl_port_entry *entry; 2180 2181 entry = (struct ctl_port_entry *)addr; 2182 2183 mtx_lock(&softc->ctl_lock); 2184 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2185 int action, done; 2186 2187 action = 0; 2188 done = 0; 2189 2190 if ((entry->port_type == CTL_PORT_NONE) 2191 && (entry->targ_port == fe->targ_port)) { 2192 /* 2193 * If the user only wants to enable or 2194 * disable or set WWNs on a specific port, 2195 * do the operation and we're done. 2196 */ 2197 action = 1; 2198 done = 1; 2199 } else if (entry->port_type & fe->port_type) { 2200 /* 2201 * Compare the user's type mask with the 2202 * particular frontend type to see if we 2203 * have a match. 2204 */ 2205 action = 1; 2206 done = 0; 2207 2208 /* 2209 * Make sure the user isn't trying to set 2210 * WWNs on multiple ports at the same time. 2211 */ 2212 if (cmd == CTL_SET_PORT_WWNS) { 2213 printf("%s: Can't set WWNs on " 2214 "multiple ports\n", __func__); 2215 retval = EINVAL; 2216 break; 2217 } 2218 } 2219 if (action != 0) { 2220 /* 2221 * XXX KDM we have to drop the lock here, 2222 * because the online/offline operations 2223 * can potentially block. We need to 2224 * reference count the frontends so they 2225 * can't go away, 2226 */ 2227 mtx_unlock(&softc->ctl_lock); 2228 2229 if (cmd == CTL_ENABLE_PORT) 2230 ctl_frontend_online(fe); 2231 else if (cmd == CTL_DISABLE_PORT) 2232 ctl_frontend_offline(fe); 2233 2234 mtx_lock(&softc->ctl_lock); 2235 2236 if (cmd == CTL_SET_PORT_WWNS) 2237 ctl_frontend_set_wwns(fe, 2238 (entry->flags & CTL_PORT_WWNN_VALID) ? 2239 1 : 0, entry->wwnn, 2240 (entry->flags & CTL_PORT_WWPN_VALID) ? 2241 1 : 0, entry->wwpn); 2242 } 2243 if (done != 0) 2244 break; 2245 } 2246 mtx_unlock(&softc->ctl_lock); 2247 break; 2248 } 2249 case CTL_GET_PORT_LIST: { 2250 struct ctl_frontend *fe; 2251 struct ctl_port_list *list; 2252 int i; 2253 2254 list = (struct ctl_port_list *)addr; 2255 2256 if (list->alloc_len != (list->alloc_num * 2257 sizeof(struct ctl_port_entry))) { 2258 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2259 "alloc_num %u * sizeof(struct ctl_port_entry) " 2260 "%zu\n", __func__, list->alloc_len, 2261 list->alloc_num, sizeof(struct ctl_port_entry)); 2262 retval = EINVAL; 2263 break; 2264 } 2265 list->fill_len = 0; 2266 list->fill_num = 0; 2267 list->dropped_num = 0; 2268 i = 0; 2269 mtx_lock(&softc->ctl_lock); 2270 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2271 struct ctl_port_entry entry, *list_entry; 2272 2273 if (list->fill_num >= list->alloc_num) { 2274 list->dropped_num++; 2275 continue; 2276 } 2277 2278 entry.port_type = fe->port_type; 2279 strlcpy(entry.port_name, fe->port_name, 2280 sizeof(entry.port_name)); 2281 entry.targ_port = fe->targ_port; 2282 entry.physical_port = fe->physical_port; 2283 entry.virtual_port = fe->virtual_port; 2284 entry.wwnn = fe->wwnn; 2285 entry.wwpn = fe->wwpn; 2286 if (fe->status & CTL_PORT_STATUS_ONLINE) 2287 entry.online = 1; 2288 else 2289 entry.online = 0; 2290 2291 list_entry = &list->entries[i]; 2292 2293 retval = copyout(&entry, list_entry, sizeof(entry)); 2294 if (retval != 0) { 2295 printf("%s: CTL_GET_PORT_LIST: copyout " 2296 "returned %d\n", __func__, retval); 2297 break; 2298 } 2299 i++; 2300 list->fill_num++; 2301 list->fill_len += sizeof(entry); 2302 } 2303 mtx_unlock(&softc->ctl_lock); 2304 2305 /* 2306 * If this is non-zero, we had a copyout fault, so there's 2307 * probably no point in attempting to set the status inside 2308 * the structure. 2309 */ 2310 if (retval != 0) 2311 break; 2312 2313 if (list->dropped_num > 0) 2314 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2315 else 2316 list->status = CTL_PORT_LIST_OK; 2317 break; 2318 } 2319 case CTL_DUMP_OOA: { 2320 struct ctl_lun *lun; 2321 union ctl_io *io; 2322 char printbuf[128]; 2323 struct sbuf sb; 2324 2325 mtx_lock(&softc->ctl_lock); 2326 printf("Dumping OOA queues:\n"); 2327 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2328 for (io = (union ctl_io *)TAILQ_FIRST( 2329 &lun->ooa_queue); io != NULL; 2330 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2331 ooa_links)) { 2332 sbuf_new(&sb, printbuf, sizeof(printbuf), 2333 SBUF_FIXEDLEN); 2334 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2335 (intmax_t)lun->lun, 2336 io->scsiio.tag_num, 2337 (io->io_hdr.flags & 2338 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2339 (io->io_hdr.flags & 2340 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2341 (io->io_hdr.flags & 2342 CTL_FLAG_ABORT) ? " ABORT" : "", 2343 (io->io_hdr.flags & 2344 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2345 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2346 sbuf_finish(&sb); 2347 printf("%s\n", sbuf_data(&sb)); 2348 } 2349 } 2350 printf("OOA queues dump done\n"); 2351 mtx_unlock(&softc->ctl_lock); 2352 break; 2353 } 2354 case CTL_GET_OOA: { 2355 struct ctl_lun *lun; 2356 struct ctl_ooa *ooa_hdr; 2357 uint32_t cur_fill_num; 2358 2359 ooa_hdr = (struct ctl_ooa *)addr; 2360 2361 if ((ooa_hdr->alloc_len == 0) 2362 || (ooa_hdr->alloc_num == 0)) { 2363 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2364 "must be non-zero\n", __func__, 2365 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2366 retval = EINVAL; 2367 break; 2368 } 2369 2370 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2371 sizeof(struct ctl_ooa_entry))) { 2372 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2373 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2374 __func__, ooa_hdr->alloc_len, 2375 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2376 retval = EINVAL; 2377 break; 2378 } 2379 2380 mtx_lock(&softc->ctl_lock); 2381 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2382 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2383 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2384 mtx_unlock(&softc->ctl_lock); 2385 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2386 __func__, (uintmax_t)ooa_hdr->lun_num); 2387 retval = EINVAL; 2388 break; 2389 } 2390 2391 cur_fill_num = 0; 2392 2393 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2394 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2395 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2396 ooa_hdr); 2397 if (retval != 0) 2398 break; 2399 } 2400 if (retval != 0) { 2401 mtx_unlock(&softc->ctl_lock); 2402 break; 2403 } 2404 } else { 2405 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2406 2407 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr); 2408 } 2409 mtx_unlock(&softc->ctl_lock); 2410 2411 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2412 ooa_hdr->fill_len = ooa_hdr->fill_num * 2413 sizeof(struct ctl_ooa_entry); 2414 2415 getbintime(&ooa_hdr->cur_bt); 2416 2417 if (cur_fill_num > ooa_hdr->alloc_num) { 2418 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2419 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2420 } else { 2421 ooa_hdr->dropped_num = 0; 2422 ooa_hdr->status = CTL_OOA_OK; 2423 } 2424 break; 2425 } 2426 case CTL_CHECK_OOA: { 2427 union ctl_io *io; 2428 struct ctl_lun *lun; 2429 struct ctl_ooa_info *ooa_info; 2430 2431 2432 ooa_info = (struct ctl_ooa_info *)addr; 2433 2434 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2435 ooa_info->status = CTL_OOA_INVALID_LUN; 2436 break; 2437 } 2438 mtx_lock(&softc->ctl_lock); 2439 lun = softc->ctl_luns[ooa_info->lun_id]; 2440 if (lun == NULL) { 2441 mtx_unlock(&softc->ctl_lock); 2442 ooa_info->status = CTL_OOA_INVALID_LUN; 2443 break; 2444 } 2445 2446 ooa_info->num_entries = 0; 2447 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2448 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2449 &io->io_hdr, ooa_links)) { 2450 ooa_info->num_entries++; 2451 } 2452 2453 mtx_unlock(&softc->ctl_lock); 2454 ooa_info->status = CTL_OOA_SUCCESS; 2455 2456 break; 2457 } 2458 case CTL_HARD_START: 2459 case CTL_HARD_STOP: { 2460 struct ctl_fe_ioctl_startstop_info ss_info; 2461 struct cfi_metatask *metatask; 2462 struct mtx hs_mtx; 2463 2464 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2465 2466 cv_init(&ss_info.sem, "hard start/stop cv" ); 2467 2468 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2469 if (metatask == NULL) { 2470 retval = ENOMEM; 2471 mtx_destroy(&hs_mtx); 2472 break; 2473 } 2474 2475 if (cmd == CTL_HARD_START) 2476 metatask->tasktype = CFI_TASK_STARTUP; 2477 else 2478 metatask->tasktype = CFI_TASK_SHUTDOWN; 2479 2480 metatask->callback = ctl_ioctl_hard_startstop_callback; 2481 metatask->callback_arg = &ss_info; 2482 2483 cfi_action(metatask); 2484 2485 /* Wait for the callback */ 2486 mtx_lock(&hs_mtx); 2487 cv_wait_sig(&ss_info.sem, &hs_mtx); 2488 mtx_unlock(&hs_mtx); 2489 2490 /* 2491 * All information has been copied from the metatask by the 2492 * time cv_broadcast() is called, so we free the metatask here. 2493 */ 2494 cfi_free_metatask(metatask); 2495 2496 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2497 2498 mtx_destroy(&hs_mtx); 2499 break; 2500 } 2501 case CTL_BBRREAD: { 2502 struct ctl_bbrread_info *bbr_info; 2503 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2504 struct mtx bbr_mtx; 2505 struct cfi_metatask *metatask; 2506 2507 bbr_info = (struct ctl_bbrread_info *)addr; 2508 2509 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2510 2511 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2512 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2513 2514 fe_bbr_info.bbr_info = bbr_info; 2515 fe_bbr_info.lock = &bbr_mtx; 2516 2517 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2518 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2519 2520 if (metatask == NULL) { 2521 mtx_destroy(&bbr_mtx); 2522 cv_destroy(&fe_bbr_info.sem); 2523 retval = ENOMEM; 2524 break; 2525 } 2526 metatask->tasktype = CFI_TASK_BBRREAD; 2527 metatask->callback = ctl_ioctl_bbrread_callback; 2528 metatask->callback_arg = &fe_bbr_info; 2529 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2530 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2531 metatask->taskinfo.bbrread.len = bbr_info->len; 2532 2533 cfi_action(metatask); 2534 2535 mtx_lock(&bbr_mtx); 2536 while (fe_bbr_info.wakeup_done == 0) 2537 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2538 mtx_unlock(&bbr_mtx); 2539 2540 bbr_info->status = metatask->status; 2541 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2542 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2543 memcpy(&bbr_info->sense_data, 2544 &metatask->taskinfo.bbrread.sense_data, 2545 ctl_min(sizeof(bbr_info->sense_data), 2546 sizeof(metatask->taskinfo.bbrread.sense_data))); 2547 2548 cfi_free_metatask(metatask); 2549 2550 mtx_destroy(&bbr_mtx); 2551 cv_destroy(&fe_bbr_info.sem); 2552 2553 break; 2554 } 2555 case CTL_DELAY_IO: { 2556 struct ctl_io_delay_info *delay_info; 2557#ifdef CTL_IO_DELAY 2558 struct ctl_lun *lun; 2559#endif /* CTL_IO_DELAY */ 2560 2561 delay_info = (struct ctl_io_delay_info *)addr; 2562 2563#ifdef CTL_IO_DELAY 2564 mtx_lock(&softc->ctl_lock); 2565 2566 if ((delay_info->lun_id > CTL_MAX_LUNS) 2567 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2568 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2569 } else { 2570 lun = softc->ctl_luns[delay_info->lun_id]; 2571 2572 delay_info->status = CTL_DELAY_STATUS_OK; 2573 2574 switch (delay_info->delay_type) { 2575 case CTL_DELAY_TYPE_CONT: 2576 break; 2577 case CTL_DELAY_TYPE_ONESHOT: 2578 break; 2579 default: 2580 delay_info->status = 2581 CTL_DELAY_STATUS_INVALID_TYPE; 2582 break; 2583 } 2584 2585 switch (delay_info->delay_loc) { 2586 case CTL_DELAY_LOC_DATAMOVE: 2587 lun->delay_info.datamove_type = 2588 delay_info->delay_type; 2589 lun->delay_info.datamove_delay = 2590 delay_info->delay_secs; 2591 break; 2592 case CTL_DELAY_LOC_DONE: 2593 lun->delay_info.done_type = 2594 delay_info->delay_type; 2595 lun->delay_info.done_delay = 2596 delay_info->delay_secs; 2597 break; 2598 default: 2599 delay_info->status = 2600 CTL_DELAY_STATUS_INVALID_LOC; 2601 break; 2602 } 2603 } 2604 2605 mtx_unlock(&softc->ctl_lock); 2606#else 2607 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2608#endif /* CTL_IO_DELAY */ 2609 break; 2610 } 2611 case CTL_REALSYNC_SET: { 2612 int *syncstate; 2613 2614 syncstate = (int *)addr; 2615 2616 mtx_lock(&softc->ctl_lock); 2617 switch (*syncstate) { 2618 case 0: 2619 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2620 break; 2621 case 1: 2622 softc->flags |= CTL_FLAG_REAL_SYNC; 2623 break; 2624 default: 2625 retval = -EINVAL; 2626 break; 2627 } 2628 mtx_unlock(&softc->ctl_lock); 2629 break; 2630 } 2631 case CTL_REALSYNC_GET: { 2632 int *syncstate; 2633 2634 syncstate = (int*)addr; 2635 2636 mtx_lock(&softc->ctl_lock); 2637 if (softc->flags & CTL_FLAG_REAL_SYNC) 2638 *syncstate = 1; 2639 else 2640 *syncstate = 0; 2641 mtx_unlock(&softc->ctl_lock); 2642 2643 break; 2644 } 2645 case CTL_SETSYNC: 2646 case CTL_GETSYNC: { 2647 struct ctl_sync_info *sync_info; 2648 struct ctl_lun *lun; 2649 2650 sync_info = (struct ctl_sync_info *)addr; 2651 2652 mtx_lock(&softc->ctl_lock); 2653 lun = softc->ctl_luns[sync_info->lun_id]; 2654 if (lun == NULL) { 2655 mtx_unlock(&softc->ctl_lock); 2656 sync_info->status = CTL_GS_SYNC_NO_LUN; 2657 } 2658 /* 2659 * Get or set the sync interval. We're not bounds checking 2660 * in the set case, hopefully the user won't do something 2661 * silly. 2662 */ 2663 if (cmd == CTL_GETSYNC) 2664 sync_info->sync_interval = lun->sync_interval; 2665 else 2666 lun->sync_interval = sync_info->sync_interval; 2667 2668 mtx_unlock(&softc->ctl_lock); 2669 2670 sync_info->status = CTL_GS_SYNC_OK; 2671 2672 break; 2673 } 2674 case CTL_GETSTATS: { 2675 struct ctl_stats *stats; 2676 struct ctl_lun *lun; 2677 int i; 2678 2679 stats = (struct ctl_stats *)addr; 2680 2681 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2682 stats->alloc_len) { 2683 stats->status = CTL_SS_NEED_MORE_SPACE; 2684 stats->num_luns = softc->num_luns; 2685 break; 2686 } 2687 /* 2688 * XXX KDM no locking here. If the LUN list changes, 2689 * things can blow up. 2690 */ 2691 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2692 i++, lun = STAILQ_NEXT(lun, links)) { 2693 retval = copyout(&lun->stats, &stats->lun_stats[i], 2694 sizeof(lun->stats)); 2695 if (retval != 0) 2696 break; 2697 } 2698 stats->num_luns = softc->num_luns; 2699 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2700 softc->num_luns; 2701 stats->status = CTL_SS_OK; 2702#ifdef CTL_TIME_IO 2703 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2704#else 2705 stats->flags = CTL_STATS_FLAG_NONE; 2706#endif 2707 getnanouptime(&stats->timestamp); 2708 break; 2709 } 2710 case CTL_ERROR_INJECT: { 2711 struct ctl_error_desc *err_desc, *new_err_desc; 2712 struct ctl_lun *lun; 2713 2714 err_desc = (struct ctl_error_desc *)addr; 2715 2716 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2717 M_WAITOK | M_ZERO); 2718 if (new_err_desc == NULL) { 2719 printf("%s: CTL_ERROR_INJECT: error allocating %zu " 2720 "bytes\n", __func__, sizeof(*new_err_desc)); 2721 retval = ENOMEM; 2722 break; 2723 } 2724 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2725 2726 mtx_lock(&softc->ctl_lock); 2727 lun = softc->ctl_luns[err_desc->lun_id]; 2728 if (lun == NULL) { 2729 mtx_unlock(&softc->ctl_lock); 2730 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2731 __func__, (uintmax_t)err_desc->lun_id); 2732 retval = EINVAL; 2733 break; 2734 } 2735 2736 /* 2737 * We could do some checking here to verify the validity 2738 * of the request, but given the complexity of error 2739 * injection requests, the checking logic would be fairly 2740 * complex. 2741 * 2742 * For now, if the request is invalid, it just won't get 2743 * executed and might get deleted. 2744 */ 2745 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2746 2747 /* 2748 * XXX KDM check to make sure the serial number is unique, 2749 * in case we somehow manage to wrap. That shouldn't 2750 * happen for a very long time, but it's the right thing to 2751 * do. 2752 */ 2753 new_err_desc->serial = lun->error_serial; 2754 err_desc->serial = lun->error_serial; 2755 lun->error_serial++; 2756 2757 mtx_unlock(&softc->ctl_lock); 2758 break; 2759 } 2760 case CTL_ERROR_INJECT_DELETE: { 2761 struct ctl_error_desc *delete_desc, *desc, *desc2; 2762 struct ctl_lun *lun; 2763 int delete_done; 2764 2765 delete_desc = (struct ctl_error_desc *)addr; 2766 delete_done = 0; 2767 2768 mtx_lock(&softc->ctl_lock); 2769 lun = softc->ctl_luns[delete_desc->lun_id]; 2770 if (lun == NULL) { 2771 mtx_unlock(&softc->ctl_lock); 2772 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2773 __func__, (uintmax_t)delete_desc->lun_id); 2774 retval = EINVAL; 2775 break; 2776 } 2777 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2778 if (desc->serial != delete_desc->serial) 2779 continue; 2780 2781 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2782 links); 2783 free(desc, M_CTL); 2784 delete_done = 1; 2785 } 2786 mtx_unlock(&softc->ctl_lock); 2787 if (delete_done == 0) { 2788 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2789 "error serial %ju on LUN %u\n", __func__, 2790 delete_desc->serial, delete_desc->lun_id); 2791 retval = EINVAL; 2792 break; 2793 } 2794 break; 2795 } 2796 case CTL_DUMP_STRUCTS: { 2797 int i, j, k; 2798 struct ctl_frontend *fe; 2799 2800 printf("CTL IID to WWPN map start:\n"); 2801 for (i = 0; i < CTL_MAX_PORTS; i++) { 2802 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2803 if (softc->wwpn_iid[i][j].in_use == 0) 2804 continue; 2805 2806 printf("port %d iid %u WWPN %#jx\n", 2807 softc->wwpn_iid[i][j].port, 2808 softc->wwpn_iid[i][j].iid, 2809 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2810 } 2811 } 2812 printf("CTL IID to WWPN map end\n"); 2813 printf("CTL Persistent Reservation information start:\n"); 2814 for (i = 0; i < CTL_MAX_LUNS; i++) { 2815 struct ctl_lun *lun; 2816 2817 lun = softc->ctl_luns[i]; 2818 2819 if ((lun == NULL) 2820 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2821 continue; 2822 2823 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2824 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2825 if (lun->per_res[j+k].registered == 0) 2826 continue; 2827 printf("LUN %d port %d iid %d key " 2828 "%#jx\n", i, j, k, 2829 (uintmax_t)scsi_8btou64( 2830 lun->per_res[j+k].res_key.key)); 2831 } 2832 } 2833 } 2834 printf("CTL Persistent Reservation information end\n"); 2835 printf("CTL Frontends:\n"); 2836 /* 2837 * XXX KDM calling this without a lock. We'd likely want 2838 * to drop the lock before calling the frontend's dump 2839 * routine anyway. 2840 */ 2841 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2842 printf("Frontend %s Type %u pport %d vport %d WWNN " 2843 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2844 fe->physical_port, fe->virtual_port, 2845 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2846 2847 /* 2848 * Frontends are not required to support the dump 2849 * routine. 2850 */ 2851 if (fe->fe_dump == NULL) 2852 continue; 2853 2854 fe->fe_dump(); 2855 } 2856 printf("CTL Frontend information end\n"); 2857 break; 2858 } 2859 case CTL_LUN_REQ: { 2860 struct ctl_lun_req *lun_req; 2861 struct ctl_backend_driver *backend; 2862 2863 lun_req = (struct ctl_lun_req *)addr; 2864 2865 backend = ctl_backend_find(lun_req->backend); 2866 if (backend == NULL) { 2867 lun_req->status = CTL_LUN_ERROR; 2868 snprintf(lun_req->error_str, 2869 sizeof(lun_req->error_str), 2870 "Backend \"%s\" not found.", 2871 lun_req->backend); 2872 break; 2873 } 2874 if (lun_req->num_be_args > 0) { 2875 lun_req->kern_be_args = ctl_copyin_args( 2876 lun_req->num_be_args, 2877 lun_req->be_args, 2878 lun_req->error_str, 2879 sizeof(lun_req->error_str)); 2880 if (lun_req->kern_be_args == NULL) { 2881 lun_req->status = CTL_LUN_ERROR; 2882 break; 2883 } 2884 } 2885 2886 retval = backend->ioctl(dev, cmd, addr, flag, td); 2887 2888 if (lun_req->num_be_args > 0) { 2889 ctl_free_args(lun_req->num_be_args, 2890 lun_req->kern_be_args); 2891 } 2892 break; 2893 } 2894 case CTL_LUN_LIST: { 2895 struct sbuf *sb; 2896 struct ctl_lun *lun; 2897 struct ctl_lun_list *list; 2898 2899 list = (struct ctl_lun_list *)addr; 2900 2901 /* 2902 * Allocate a fixed length sbuf here, based on the length 2903 * of the user's buffer. We could allocate an auto-extending 2904 * buffer, and then tell the user how much larger our 2905 * amount of data is than his buffer, but that presents 2906 * some problems: 2907 * 2908 * 1. The sbuf(9) routines use a blocking malloc, and so 2909 * we can't hold a lock while calling them with an 2910 * auto-extending buffer. 2911 * 2912 * 2. There is not currently a LUN reference counting 2913 * mechanism, outside of outstanding transactions on 2914 * the LUN's OOA queue. So a LUN could go away on us 2915 * while we're getting the LUN number, backend-specific 2916 * information, etc. Thus, given the way things 2917 * currently work, we need to hold the CTL lock while 2918 * grabbing LUN information. 2919 * 2920 * So, from the user's standpoint, the best thing to do is 2921 * allocate what he thinks is a reasonable buffer length, 2922 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 2923 * double the buffer length and try again. (And repeat 2924 * that until he succeeds.) 2925 */ 2926 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 2927 if (sb == NULL) { 2928 list->status = CTL_LUN_LIST_ERROR; 2929 snprintf(list->error_str, sizeof(list->error_str), 2930 "Unable to allocate %d bytes for LUN list", 2931 list->alloc_len); 2932 break; 2933 } 2934 2935 sbuf_printf(sb, "<ctllunlist>\n"); 2936 2937 mtx_lock(&softc->ctl_lock); 2938 2939 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2940 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 2941 (uintmax_t)lun->lun); 2942 2943 /* 2944 * Bail out as soon as we see that we've overfilled 2945 * the buffer. 2946 */ 2947 if (retval != 0) 2948 break; 2949 2950 retval = sbuf_printf(sb, "<backend_type>%s" 2951 "</backend_type>\n", 2952 (lun->backend == NULL) ? "none" : 2953 lun->backend->name); 2954 2955 if (retval != 0) 2956 break; 2957 2958 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 2959 lun->be_lun->lun_type); 2960 2961 if (retval != 0) 2962 break; 2963 2964 if (lun->backend == NULL) { 2965 retval = sbuf_printf(sb, "</lun>\n"); 2966 if (retval != 0) 2967 break; 2968 continue; 2969 } 2970 2971 retval = sbuf_printf(sb, "<size>%ju</size>\n", 2972 (lun->be_lun->maxlba > 0) ? 2973 lun->be_lun->maxlba + 1 : 0); 2974 2975 if (retval != 0) 2976 break; 2977 2978 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 2979 lun->be_lun->blocksize); 2980 2981 if (retval != 0) 2982 break; 2983 2984 retval = sbuf_printf(sb, "<serial_number>"); 2985 2986 if (retval != 0) 2987 break; 2988 2989 retval = ctl_sbuf_printf_esc(sb, 2990 lun->be_lun->serial_num); 2991 2992 if (retval != 0) 2993 break; 2994 2995 retval = sbuf_printf(sb, "</serial_number>\n"); 2996 2997 if (retval != 0) 2998 break; 2999 3000 retval = sbuf_printf(sb, "<device_id>"); 3001 3002 if (retval != 0) 3003 break; 3004 3005 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3006 3007 if (retval != 0) 3008 break; 3009 3010 retval = sbuf_printf(sb, "</device_id>\n"); 3011 3012 if (retval != 0) 3013 break; 3014 3015 if (lun->backend->lun_info == NULL) { 3016 retval = sbuf_printf(sb, "</lun>\n"); 3017 if (retval != 0) 3018 break; 3019 continue; 3020 } 3021 3022 retval =lun->backend->lun_info(lun->be_lun->be_lun, sb); 3023 3024 if (retval != 0) 3025 break; 3026 3027 retval = sbuf_printf(sb, "</lun>\n"); 3028 3029 if (retval != 0) 3030 break; 3031 } 3032 mtx_unlock(&softc->ctl_lock); 3033 3034 if ((retval != 0) 3035 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3036 retval = 0; 3037 sbuf_delete(sb); 3038 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3039 snprintf(list->error_str, sizeof(list->error_str), 3040 "Out of space, %d bytes is too small", 3041 list->alloc_len); 3042 break; 3043 } 3044 3045 sbuf_finish(sb); 3046 3047 retval = copyout(sbuf_data(sb), list->lun_xml, 3048 sbuf_len(sb) + 1); 3049 3050 list->fill_len = sbuf_len(sb) + 1; 3051 list->status = CTL_LUN_LIST_OK; 3052 sbuf_delete(sb); 3053 break; 3054 } 3055 default: { 3056 /* XXX KDM should we fix this? */ 3057#if 0 3058 struct ctl_backend_driver *backend; 3059 unsigned int type; 3060 int found; 3061 3062 found = 0; 3063 3064 /* 3065 * We encode the backend type as the ioctl type for backend 3066 * ioctls. So parse it out here, and then search for a 3067 * backend of this type. 3068 */ 3069 type = _IOC_TYPE(cmd); 3070 3071 STAILQ_FOREACH(backend, &softc->be_list, links) { 3072 if (backend->type == type) { 3073 found = 1; 3074 break; 3075 } 3076 } 3077 if (found == 0) { 3078 printf("ctl: unknown ioctl command %#lx or backend " 3079 "%d\n", cmd, type); 3080 retval = -EINVAL; 3081 break; 3082 } 3083 retval = backend->ioctl(dev, cmd, addr, flag, td); 3084#endif 3085 retval = ENOTTY; 3086 break; 3087 } 3088 } 3089 return (retval); 3090} 3091 3092uint32_t 3093ctl_get_initindex(struct ctl_nexus *nexus) 3094{ 3095 if (nexus->targ_port < CTL_MAX_PORTS) 3096 return (nexus->initid.id + 3097 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3098 else 3099 return (nexus->initid.id + 3100 ((nexus->targ_port - CTL_MAX_PORTS) * 3101 CTL_MAX_INIT_PER_PORT)); 3102} 3103 3104uint32_t 3105ctl_get_resindex(struct ctl_nexus *nexus) 3106{ 3107 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3108} 3109 3110uint32_t 3111ctl_port_idx(int port_num) 3112{ 3113 if (port_num < CTL_MAX_PORTS) 3114 return(port_num); 3115 else 3116 return(port_num - CTL_MAX_PORTS); 3117} 3118 3119/* 3120 * Note: This only works for bitmask sizes that are at least 32 bits, and 3121 * that are a power of 2. 3122 */ 3123int 3124ctl_ffz(uint32_t *mask, uint32_t size) 3125{ 3126 uint32_t num_chunks, num_pieces; 3127 int i, j; 3128 3129 num_chunks = (size >> 5); 3130 if (num_chunks == 0) 3131 num_chunks++; 3132 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3133 3134 for (i = 0; i < num_chunks; i++) { 3135 for (j = 0; j < num_pieces; j++) { 3136 if ((mask[i] & (1 << j)) == 0) 3137 return ((i << 5) + j); 3138 } 3139 } 3140 3141 return (-1); 3142} 3143 3144int 3145ctl_set_mask(uint32_t *mask, uint32_t bit) 3146{ 3147 uint32_t chunk, piece; 3148 3149 chunk = bit >> 5; 3150 piece = bit % (sizeof(uint32_t) * 8); 3151 3152 if ((mask[chunk] & (1 << piece)) != 0) 3153 return (-1); 3154 else 3155 mask[chunk] |= (1 << piece); 3156 3157 return (0); 3158} 3159 3160int 3161ctl_clear_mask(uint32_t *mask, uint32_t bit) 3162{ 3163 uint32_t chunk, piece; 3164 3165 chunk = bit >> 5; 3166 piece = bit % (sizeof(uint32_t) * 8); 3167 3168 if ((mask[chunk] & (1 << piece)) == 0) 3169 return (-1); 3170 else 3171 mask[chunk] &= ~(1 << piece); 3172 3173 return (0); 3174} 3175 3176int 3177ctl_is_set(uint32_t *mask, uint32_t bit) 3178{ 3179 uint32_t chunk, piece; 3180 3181 chunk = bit >> 5; 3182 piece = bit % (sizeof(uint32_t) * 8); 3183 3184 if ((mask[chunk] & (1 << piece)) == 0) 3185 return (0); 3186 else 3187 return (1); 3188} 3189 3190#ifdef unused 3191/* 3192 * The bus, target and lun are optional, they can be filled in later. 3193 * can_wait is used to determine whether we can wait on the malloc or not. 3194 */ 3195union ctl_io* 3196ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3197 uint32_t targ_lun, int can_wait) 3198{ 3199 union ctl_io *io; 3200 3201 if (can_wait) 3202 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3203 else 3204 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3205 3206 if (io != NULL) { 3207 io->io_hdr.io_type = io_type; 3208 io->io_hdr.targ_port = targ_port; 3209 /* 3210 * XXX KDM this needs to change/go away. We need to move 3211 * to a preallocated pool of ctl_scsiio structures. 3212 */ 3213 io->io_hdr.nexus.targ_target.id = targ_target; 3214 io->io_hdr.nexus.targ_lun = targ_lun; 3215 } 3216 3217 return (io); 3218} 3219 3220void 3221ctl_kfree_io(union ctl_io *io) 3222{ 3223 free(io, M_CTL); 3224} 3225#endif /* unused */ 3226 3227/* 3228 * ctl_softc, pool_type, total_ctl_io are passed in. 3229 * npool is passed out. 3230 */ 3231int 3232ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3233 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3234{ 3235 uint32_t i; 3236 union ctl_io *cur_io, *next_io; 3237 struct ctl_io_pool *pool; 3238 int retval; 3239 3240 retval = 0; 3241 3242 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, M_NOWAIT); 3243 if (pool == NULL) { 3244 retval = -ENOMEM; 3245 goto bailout; 3246 } 3247 3248 memset(pool, 0, sizeof(*pool)); 3249 3250 pool->type = pool_type; 3251 pool->ctl_softc = ctl_softc; 3252 3253 mtx_lock(&ctl_softc->ctl_lock); 3254 pool->id = ctl_softc->cur_pool_id++; 3255 mtx_unlock(&ctl_softc->ctl_lock); 3256 3257 pool->flags = CTL_POOL_FLAG_NONE; 3258 STAILQ_INIT(&pool->free_queue); 3259 3260 /* 3261 * XXX KDM other options here: 3262 * - allocate a page at a time 3263 * - allocate one big chunk of memory. 3264 * Page allocation might work well, but would take a little more 3265 * tracking. 3266 */ 3267 for (i = 0; i < total_ctl_io; i++) { 3268 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3269 M_NOWAIT); 3270 if (cur_io == NULL) { 3271 retval = ENOMEM; 3272 break; 3273 } 3274 cur_io->io_hdr.pool = pool; 3275 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3276 pool->total_ctl_io++; 3277 pool->free_ctl_io++; 3278 } 3279 3280 if (retval != 0) { 3281 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3282 cur_io != NULL; cur_io = next_io) { 3283 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3284 links); 3285 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3286 ctl_io_hdr, links); 3287 free(cur_io, M_CTL); 3288 } 3289 3290 free(pool, M_CTL); 3291 goto bailout; 3292 } 3293 mtx_lock(&ctl_softc->ctl_lock); 3294 ctl_softc->num_pools++; 3295 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3296 /* 3297 * Increment our usage count if this is an external consumer, so we 3298 * can't get unloaded until the external consumer (most likely a 3299 * FETD) unloads and frees his pool. 3300 * 3301 * XXX KDM will this increment the caller's module use count, or 3302 * mine? 3303 */ 3304#if 0 3305 if ((pool_type != CTL_POOL_EMERGENCY) 3306 && (pool_type != CTL_POOL_INTERNAL) 3307 && (pool_type != CTL_POOL_IOCTL) 3308 && (pool_type != CTL_POOL_4OTHERSC)) 3309 MOD_INC_USE_COUNT; 3310#endif 3311 3312 mtx_unlock(&ctl_softc->ctl_lock); 3313 3314 *npool = pool; 3315 3316bailout: 3317 3318 return (retval); 3319} 3320 3321/* 3322 * Caller must hold ctl_softc->ctl_lock. 3323 */ 3324int 3325ctl_pool_acquire(struct ctl_io_pool *pool) 3326{ 3327 if (pool == NULL) 3328 return (-EINVAL); 3329 3330 if (pool->flags & CTL_POOL_FLAG_INVALID) 3331 return (-EINVAL); 3332 3333 pool->refcount++; 3334 3335 return (0); 3336} 3337 3338/* 3339 * Caller must hold ctl_softc->ctl_lock. 3340 */ 3341int 3342ctl_pool_invalidate(struct ctl_io_pool *pool) 3343{ 3344 if (pool == NULL) 3345 return (-EINVAL); 3346 3347 pool->flags |= CTL_POOL_FLAG_INVALID; 3348 3349 return (0); 3350} 3351 3352/* 3353 * Caller must hold ctl_softc->ctl_lock. 3354 */ 3355int 3356ctl_pool_release(struct ctl_io_pool *pool) 3357{ 3358 if (pool == NULL) 3359 return (-EINVAL); 3360 3361 if ((--pool->refcount == 0) 3362 && (pool->flags & CTL_POOL_FLAG_INVALID)) { 3363 ctl_pool_free(pool->ctl_softc, pool); 3364 } 3365 3366 return (0); 3367} 3368 3369/* 3370 * Must be called with ctl_softc->ctl_lock held. 3371 */ 3372void 3373ctl_pool_free(struct ctl_softc *ctl_softc, struct ctl_io_pool *pool) 3374{ 3375 union ctl_io *cur_io, *next_io; 3376 3377 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3378 cur_io != NULL; cur_io = next_io) { 3379 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3380 links); 3381 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, ctl_io_hdr, 3382 links); 3383 free(cur_io, M_CTL); 3384 } 3385 3386 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3387 ctl_softc->num_pools--; 3388 3389 /* 3390 * XXX KDM will this decrement the caller's usage count or mine? 3391 */ 3392#if 0 3393 if ((pool->type != CTL_POOL_EMERGENCY) 3394 && (pool->type != CTL_POOL_INTERNAL) 3395 && (pool->type != CTL_POOL_IOCTL)) 3396 MOD_DEC_USE_COUNT; 3397#endif 3398 3399 free(pool, M_CTL); 3400} 3401 3402/* 3403 * This routine does not block (except for spinlocks of course). 3404 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3405 * possible. 3406 */ 3407union ctl_io * 3408ctl_alloc_io(void *pool_ref) 3409{ 3410 union ctl_io *io; 3411 struct ctl_softc *ctl_softc; 3412 struct ctl_io_pool *pool, *npool; 3413 struct ctl_io_pool *emergency_pool; 3414 3415 pool = (struct ctl_io_pool *)pool_ref; 3416 3417 if (pool == NULL) { 3418 printf("%s: pool is NULL\n", __func__); 3419 return (NULL); 3420 } 3421 3422 emergency_pool = NULL; 3423 3424 ctl_softc = pool->ctl_softc; 3425 3426 mtx_lock(&ctl_softc->ctl_lock); 3427 /* 3428 * First, try to get the io structure from the user's pool. 3429 */ 3430 if (ctl_pool_acquire(pool) == 0) { 3431 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3432 if (io != NULL) { 3433 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3434 pool->total_allocated++; 3435 pool->free_ctl_io--; 3436 mtx_unlock(&ctl_softc->ctl_lock); 3437 return (io); 3438 } else 3439 ctl_pool_release(pool); 3440 } 3441 /* 3442 * If he doesn't have any io structures left, search for an 3443 * emergency pool and grab one from there. 3444 */ 3445 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3446 if (npool->type != CTL_POOL_EMERGENCY) 3447 continue; 3448 3449 if (ctl_pool_acquire(npool) != 0) 3450 continue; 3451 3452 emergency_pool = npool; 3453 3454 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3455 if (io != NULL) { 3456 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3457 npool->total_allocated++; 3458 npool->free_ctl_io--; 3459 mtx_unlock(&ctl_softc->ctl_lock); 3460 return (io); 3461 } else 3462 ctl_pool_release(npool); 3463 } 3464 3465 /* Drop the spinlock before we malloc */ 3466 mtx_unlock(&ctl_softc->ctl_lock); 3467 3468 /* 3469 * The emergency pool (if it exists) didn't have one, so try an 3470 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3471 */ 3472 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3473 if (io != NULL) { 3474 /* 3475 * If the emergency pool exists but is empty, add this 3476 * ctl_io to its list when it gets freed. 3477 */ 3478 if (emergency_pool != NULL) { 3479 mtx_lock(&ctl_softc->ctl_lock); 3480 if (ctl_pool_acquire(emergency_pool) == 0) { 3481 io->io_hdr.pool = emergency_pool; 3482 emergency_pool->total_ctl_io++; 3483 /* 3484 * Need to bump this, otherwise 3485 * total_allocated and total_freed won't 3486 * match when we no longer have anything 3487 * outstanding. 3488 */ 3489 emergency_pool->total_allocated++; 3490 } 3491 mtx_unlock(&ctl_softc->ctl_lock); 3492 } else 3493 io->io_hdr.pool = NULL; 3494 } 3495 3496 return (io); 3497} 3498 3499static void 3500ctl_free_io_internal(union ctl_io *io, int have_lock) 3501{ 3502 if (io == NULL) 3503 return; 3504 3505 /* 3506 * If this ctl_io has a pool, return it to that pool. 3507 */ 3508 if (io->io_hdr.pool != NULL) { 3509 struct ctl_io_pool *pool; 3510#if 0 3511 struct ctl_softc *ctl_softc; 3512 union ctl_io *tmp_io; 3513 unsigned long xflags; 3514 int i; 3515 3516 ctl_softc = control_softc; 3517#endif 3518 3519 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3520 3521 if (have_lock == 0) 3522 mtx_lock(&pool->ctl_softc->ctl_lock); 3523#if 0 3524 save_flags(xflags); 3525 3526 for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST( 3527 &ctl_softc->task_queue); tmp_io != NULL; i++, 3528 tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr, 3529 links)) { 3530 if (tmp_io == io) { 3531 printf("%s: %p is still on the task queue!\n", 3532 __func__, tmp_io); 3533 printf("%s: (%d): type %d " 3534 "msg %d cdb %x iptl: " 3535 "%d:%d:%d:%d tag 0x%04x " 3536 "flg %#lx\n", 3537 __func__, i, 3538 tmp_io->io_hdr.io_type, 3539 tmp_io->io_hdr.msg_type, 3540 tmp_io->scsiio.cdb[0], 3541 tmp_io->io_hdr.nexus.initid.id, 3542 tmp_io->io_hdr.nexus.targ_port, 3543 tmp_io->io_hdr.nexus.targ_target.id, 3544 tmp_io->io_hdr.nexus.targ_lun, 3545 (tmp_io->io_hdr.io_type == 3546 CTL_IO_TASK) ? 3547 tmp_io->taskio.tag_num : 3548 tmp_io->scsiio.tag_num, 3549 xflags); 3550 panic("I/O still on the task queue!"); 3551 } 3552 } 3553#endif 3554 io->io_hdr.io_type = 0xff; 3555 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3556 pool->total_freed++; 3557 pool->free_ctl_io++; 3558 ctl_pool_release(pool); 3559 if (have_lock == 0) 3560 mtx_unlock(&pool->ctl_softc->ctl_lock); 3561 } else { 3562 /* 3563 * Otherwise, just free it. We probably malloced it and 3564 * the emergency pool wasn't available. 3565 */ 3566 free(io, M_CTL); 3567 } 3568 3569} 3570 3571void 3572ctl_free_io(union ctl_io *io) 3573{ 3574 ctl_free_io_internal(io, /*have_lock*/ 0); 3575} 3576 3577void 3578ctl_zero_io(union ctl_io *io) 3579{ 3580 void *pool_ref; 3581 3582 if (io == NULL) 3583 return; 3584 3585 /* 3586 * May need to preserve linked list pointers at some point too. 3587 */ 3588 pool_ref = io->io_hdr.pool; 3589 3590 memset(io, 0, sizeof(*io)); 3591 3592 io->io_hdr.pool = pool_ref; 3593} 3594 3595/* 3596 * This routine is currently used for internal copies of ctl_ios that need 3597 * to persist for some reason after we've already returned status to the 3598 * FETD. (Thus the flag set.) 3599 * 3600 * XXX XXX 3601 * Note that this makes a blind copy of all fields in the ctl_io, except 3602 * for the pool reference. This includes any memory that has been 3603 * allocated! That memory will no longer be valid after done has been 3604 * called, so this would be VERY DANGEROUS for command that actually does 3605 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3606 * start and stop commands, which don't transfer any data, so this is not a 3607 * problem. If it is used for anything else, the caller would also need to 3608 * allocate data buffer space and this routine would need to be modified to 3609 * copy the data buffer(s) as well. 3610 */ 3611void 3612ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3613{ 3614 void *pool_ref; 3615 3616 if ((src == NULL) 3617 || (dest == NULL)) 3618 return; 3619 3620 /* 3621 * May need to preserve linked list pointers at some point too. 3622 */ 3623 pool_ref = dest->io_hdr.pool; 3624 3625 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3626 3627 dest->io_hdr.pool = pool_ref; 3628 /* 3629 * We need to know that this is an internal copy, and doesn't need 3630 * to get passed back to the FETD that allocated it. 3631 */ 3632 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3633} 3634 3635#ifdef NEEDTOPORT 3636static void 3637ctl_update_power_subpage(struct copan_power_subpage *page) 3638{ 3639 int num_luns, num_partitions, config_type; 3640 struct ctl_softc *softc; 3641 cs_BOOL_t aor_present, shelf_50pct_power; 3642 cs_raidset_personality_t rs_type; 3643 int max_active_luns; 3644 3645 softc = control_softc; 3646 3647 /* subtract out the processor LUN */ 3648 num_luns = softc->num_luns - 1; 3649 /* 3650 * Default to 7 LUNs active, which was the only number we allowed 3651 * in the past. 3652 */ 3653 max_active_luns = 7; 3654 3655 num_partitions = config_GetRsPartitionInfo(); 3656 config_type = config_GetConfigType(); 3657 shelf_50pct_power = config_GetShelfPowerMode(); 3658 aor_present = config_IsAorRsPresent(); 3659 3660 rs_type = ddb_GetRsRaidType(1); 3661 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3662 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3663 EPRINT(0, "Unsupported RS type %d!", rs_type); 3664 } 3665 3666 3667 page->total_luns = num_luns; 3668 3669 switch (config_type) { 3670 case 40: 3671 /* 3672 * In a 40 drive configuration, it doesn't matter what DC 3673 * cards we have, whether we have AOR enabled or not, 3674 * partitioning or not, or what type of RAIDset we have. 3675 * In that scenario, we can power up every LUN we present 3676 * to the user. 3677 */ 3678 max_active_luns = num_luns; 3679 3680 break; 3681 case 64: 3682 if (shelf_50pct_power == CS_FALSE) { 3683 /* 25% power */ 3684 if (aor_present == CS_TRUE) { 3685 if (rs_type == 3686 CS_RAIDSET_PERSONALITY_RAID5) { 3687 max_active_luns = 7; 3688 } else if (rs_type == 3689 CS_RAIDSET_PERSONALITY_RAID1){ 3690 max_active_luns = 14; 3691 } else { 3692 /* XXX KDM now what?? */ 3693 } 3694 } else { 3695 if (rs_type == 3696 CS_RAIDSET_PERSONALITY_RAID5) { 3697 max_active_luns = 8; 3698 } else if (rs_type == 3699 CS_RAIDSET_PERSONALITY_RAID1){ 3700 max_active_luns = 16; 3701 } else { 3702 /* XXX KDM now what?? */ 3703 } 3704 } 3705 } else { 3706 /* 50% power */ 3707 /* 3708 * With 50% power in a 64 drive configuration, we 3709 * can power all LUNs we present. 3710 */ 3711 max_active_luns = num_luns; 3712 } 3713 break; 3714 case 112: 3715 if (shelf_50pct_power == CS_FALSE) { 3716 /* 25% power */ 3717 if (aor_present == CS_TRUE) { 3718 if (rs_type == 3719 CS_RAIDSET_PERSONALITY_RAID5) { 3720 max_active_luns = 7; 3721 } else if (rs_type == 3722 CS_RAIDSET_PERSONALITY_RAID1){ 3723 max_active_luns = 14; 3724 } else { 3725 /* XXX KDM now what?? */ 3726 } 3727 } else { 3728 if (rs_type == 3729 CS_RAIDSET_PERSONALITY_RAID5) { 3730 max_active_luns = 8; 3731 } else if (rs_type == 3732 CS_RAIDSET_PERSONALITY_RAID1){ 3733 max_active_luns = 16; 3734 } else { 3735 /* XXX KDM now what?? */ 3736 } 3737 } 3738 } else { 3739 /* 50% power */ 3740 if (aor_present == CS_TRUE) { 3741 if (rs_type == 3742 CS_RAIDSET_PERSONALITY_RAID5) { 3743 max_active_luns = 14; 3744 } else if (rs_type == 3745 CS_RAIDSET_PERSONALITY_RAID1){ 3746 /* 3747 * We're assuming here that disk 3748 * caching is enabled, and so we're 3749 * able to power up half of each 3750 * LUN, and cache all writes. 3751 */ 3752 max_active_luns = num_luns; 3753 } else { 3754 /* XXX KDM now what?? */ 3755 } 3756 } else { 3757 if (rs_type == 3758 CS_RAIDSET_PERSONALITY_RAID5) { 3759 max_active_luns = 15; 3760 } else if (rs_type == 3761 CS_RAIDSET_PERSONALITY_RAID1){ 3762 max_active_luns = 30; 3763 } else { 3764 /* XXX KDM now what?? */ 3765 } 3766 } 3767 } 3768 break; 3769 default: 3770 /* 3771 * In this case, we have an unknown configuration, so we 3772 * just use the default from above. 3773 */ 3774 break; 3775 } 3776 3777 page->max_active_luns = max_active_luns; 3778#if 0 3779 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3780 page->total_luns, page->max_active_luns); 3781#endif 3782} 3783#endif /* NEEDTOPORT */ 3784 3785/* 3786 * This routine could be used in the future to load default and/or saved 3787 * mode page parameters for a particuar lun. 3788 */ 3789static int 3790ctl_init_page_index(struct ctl_lun *lun) 3791{ 3792 int i; 3793 struct ctl_page_index *page_index; 3794 struct ctl_softc *softc; 3795 3796 memcpy(&lun->mode_pages.index, page_index_template, 3797 sizeof(page_index_template)); 3798 3799 softc = lun->ctl_softc; 3800 3801 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3802 3803 page_index = &lun->mode_pages.index[i]; 3804 /* 3805 * If this is a disk-only mode page, there's no point in 3806 * setting it up. For some pages, we have to have some 3807 * basic information about the disk in order to calculate the 3808 * mode page data. 3809 */ 3810 if ((lun->be_lun->lun_type != T_DIRECT) 3811 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3812 continue; 3813 3814 switch (page_index->page_code & SMPH_PC_MASK) { 3815 case SMS_FORMAT_DEVICE_PAGE: { 3816 struct scsi_format_page *format_page; 3817 3818 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3819 panic("subpage is incorrect!"); 3820 3821 /* 3822 * Sectors per track are set above. Bytes per 3823 * sector need to be set here on a per-LUN basis. 3824 */ 3825 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3826 &format_page_default, 3827 sizeof(format_page_default)); 3828 memcpy(&lun->mode_pages.format_page[ 3829 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3830 sizeof(format_page_changeable)); 3831 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3832 &format_page_default, 3833 sizeof(format_page_default)); 3834 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3835 &format_page_default, 3836 sizeof(format_page_default)); 3837 3838 format_page = &lun->mode_pages.format_page[ 3839 CTL_PAGE_CURRENT]; 3840 scsi_ulto2b(lun->be_lun->blocksize, 3841 format_page->bytes_per_sector); 3842 3843 format_page = &lun->mode_pages.format_page[ 3844 CTL_PAGE_DEFAULT]; 3845 scsi_ulto2b(lun->be_lun->blocksize, 3846 format_page->bytes_per_sector); 3847 3848 format_page = &lun->mode_pages.format_page[ 3849 CTL_PAGE_SAVED]; 3850 scsi_ulto2b(lun->be_lun->blocksize, 3851 format_page->bytes_per_sector); 3852 3853 page_index->page_data = 3854 (uint8_t *)lun->mode_pages.format_page; 3855 break; 3856 } 3857 case SMS_RIGID_DISK_PAGE: { 3858 struct scsi_rigid_disk_page *rigid_disk_page; 3859 uint32_t sectors_per_cylinder; 3860 uint64_t cylinders; 3861#ifndef __XSCALE__ 3862 int shift; 3863#endif /* !__XSCALE__ */ 3864 3865 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3866 panic("invalid subpage value %d", 3867 page_index->subpage); 3868 3869 /* 3870 * Rotation rate and sectors per track are set 3871 * above. We calculate the cylinders here based on 3872 * capacity. Due to the number of heads and 3873 * sectors per track we're using, smaller arrays 3874 * may turn out to have 0 cylinders. Linux and 3875 * FreeBSD don't pay attention to these mode pages 3876 * to figure out capacity, but Solaris does. It 3877 * seems to deal with 0 cylinders just fine, and 3878 * works out a fake geometry based on the capacity. 3879 */ 3880 memcpy(&lun->mode_pages.rigid_disk_page[ 3881 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3882 sizeof(rigid_disk_page_default)); 3883 memcpy(&lun->mode_pages.rigid_disk_page[ 3884 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3885 sizeof(rigid_disk_page_changeable)); 3886 memcpy(&lun->mode_pages.rigid_disk_page[ 3887 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3888 sizeof(rigid_disk_page_default)); 3889 memcpy(&lun->mode_pages.rigid_disk_page[ 3890 CTL_PAGE_SAVED], &rigid_disk_page_default, 3891 sizeof(rigid_disk_page_default)); 3892 3893 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3894 CTL_DEFAULT_HEADS; 3895 3896 /* 3897 * The divide method here will be more accurate, 3898 * probably, but results in floating point being 3899 * used in the kernel on i386 (__udivdi3()). On the 3900 * XScale, though, __udivdi3() is implemented in 3901 * software. 3902 * 3903 * The shift method for cylinder calculation is 3904 * accurate if sectors_per_cylinder is a power of 3905 * 2. Otherwise it might be slightly off -- you 3906 * might have a bit of a truncation problem. 3907 */ 3908#ifdef __XSCALE__ 3909 cylinders = (lun->be_lun->maxlba + 1) / 3910 sectors_per_cylinder; 3911#else 3912 for (shift = 31; shift > 0; shift--) { 3913 if (sectors_per_cylinder & (1 << shift)) 3914 break; 3915 } 3916 cylinders = (lun->be_lun->maxlba + 1) >> shift; 3917#endif 3918 3919 /* 3920 * We've basically got 3 bytes, or 24 bits for the 3921 * cylinder size in the mode page. If we're over, 3922 * just round down to 2^24. 3923 */ 3924 if (cylinders > 0xffffff) 3925 cylinders = 0xffffff; 3926 3927 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3928 CTL_PAGE_CURRENT]; 3929 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3930 3931 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3932 CTL_PAGE_DEFAULT]; 3933 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3934 3935 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3936 CTL_PAGE_SAVED]; 3937 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3938 3939 page_index->page_data = 3940 (uint8_t *)lun->mode_pages.rigid_disk_page; 3941 break; 3942 } 3943 case SMS_CACHING_PAGE: { 3944 3945 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3946 panic("invalid subpage value %d", 3947 page_index->subpage); 3948 /* 3949 * Defaults should be okay here, no calculations 3950 * needed. 3951 */ 3952 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 3953 &caching_page_default, 3954 sizeof(caching_page_default)); 3955 memcpy(&lun->mode_pages.caching_page[ 3956 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 3957 sizeof(caching_page_changeable)); 3958 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 3959 &caching_page_default, 3960 sizeof(caching_page_default)); 3961 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 3962 &caching_page_default, 3963 sizeof(caching_page_default)); 3964 page_index->page_data = 3965 (uint8_t *)lun->mode_pages.caching_page; 3966 break; 3967 } 3968 case SMS_CONTROL_MODE_PAGE: { 3969 3970 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3971 panic("invalid subpage value %d", 3972 page_index->subpage); 3973 3974 /* 3975 * Defaults should be okay here, no calculations 3976 * needed. 3977 */ 3978 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 3979 &control_page_default, 3980 sizeof(control_page_default)); 3981 memcpy(&lun->mode_pages.control_page[ 3982 CTL_PAGE_CHANGEABLE], &control_page_changeable, 3983 sizeof(control_page_changeable)); 3984 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 3985 &control_page_default, 3986 sizeof(control_page_default)); 3987 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 3988 &control_page_default, 3989 sizeof(control_page_default)); 3990 page_index->page_data = 3991 (uint8_t *)lun->mode_pages.control_page; 3992 break; 3993 3994 } 3995 case SMS_VENDOR_SPECIFIC_PAGE:{ 3996 switch (page_index->subpage) { 3997 case PWR_SUBPAGE_CODE: { 3998 struct copan_power_subpage *current_page, 3999 *saved_page; 4000 4001 memcpy(&lun->mode_pages.power_subpage[ 4002 CTL_PAGE_CURRENT], 4003 &power_page_default, 4004 sizeof(power_page_default)); 4005 memcpy(&lun->mode_pages.power_subpage[ 4006 CTL_PAGE_CHANGEABLE], 4007 &power_page_changeable, 4008 sizeof(power_page_changeable)); 4009 memcpy(&lun->mode_pages.power_subpage[ 4010 CTL_PAGE_DEFAULT], 4011 &power_page_default, 4012 sizeof(power_page_default)); 4013 memcpy(&lun->mode_pages.power_subpage[ 4014 CTL_PAGE_SAVED], 4015 &power_page_default, 4016 sizeof(power_page_default)); 4017 page_index->page_data = 4018 (uint8_t *)lun->mode_pages.power_subpage; 4019 4020 current_page = (struct copan_power_subpage *) 4021 (page_index->page_data + 4022 (page_index->page_len * 4023 CTL_PAGE_CURRENT)); 4024 saved_page = (struct copan_power_subpage *) 4025 (page_index->page_data + 4026 (page_index->page_len * 4027 CTL_PAGE_SAVED)); 4028 break; 4029 } 4030 case APS_SUBPAGE_CODE: { 4031 struct copan_aps_subpage *current_page, 4032 *saved_page; 4033 4034 // This gets set multiple times but 4035 // it should always be the same. It's 4036 // only done during init so who cares. 4037 index_to_aps_page = i; 4038 4039 memcpy(&lun->mode_pages.aps_subpage[ 4040 CTL_PAGE_CURRENT], 4041 &aps_page_default, 4042 sizeof(aps_page_default)); 4043 memcpy(&lun->mode_pages.aps_subpage[ 4044 CTL_PAGE_CHANGEABLE], 4045 &aps_page_changeable, 4046 sizeof(aps_page_changeable)); 4047 memcpy(&lun->mode_pages.aps_subpage[ 4048 CTL_PAGE_DEFAULT], 4049 &aps_page_default, 4050 sizeof(aps_page_default)); 4051 memcpy(&lun->mode_pages.aps_subpage[ 4052 CTL_PAGE_SAVED], 4053 &aps_page_default, 4054 sizeof(aps_page_default)); 4055 page_index->page_data = 4056 (uint8_t *)lun->mode_pages.aps_subpage; 4057 4058 current_page = (struct copan_aps_subpage *) 4059 (page_index->page_data + 4060 (page_index->page_len * 4061 CTL_PAGE_CURRENT)); 4062 saved_page = (struct copan_aps_subpage *) 4063 (page_index->page_data + 4064 (page_index->page_len * 4065 CTL_PAGE_SAVED)); 4066 break; 4067 } 4068 case DBGCNF_SUBPAGE_CODE: { 4069 struct copan_debugconf_subpage *current_page, 4070 *saved_page; 4071 4072 memcpy(&lun->mode_pages.debugconf_subpage[ 4073 CTL_PAGE_CURRENT], 4074 &debugconf_page_default, 4075 sizeof(debugconf_page_default)); 4076 memcpy(&lun->mode_pages.debugconf_subpage[ 4077 CTL_PAGE_CHANGEABLE], 4078 &debugconf_page_changeable, 4079 sizeof(debugconf_page_changeable)); 4080 memcpy(&lun->mode_pages.debugconf_subpage[ 4081 CTL_PAGE_DEFAULT], 4082 &debugconf_page_default, 4083 sizeof(debugconf_page_default)); 4084 memcpy(&lun->mode_pages.debugconf_subpage[ 4085 CTL_PAGE_SAVED], 4086 &debugconf_page_default, 4087 sizeof(debugconf_page_default)); 4088 page_index->page_data = 4089 (uint8_t *)lun->mode_pages.debugconf_subpage; 4090 4091 current_page = (struct copan_debugconf_subpage *) 4092 (page_index->page_data + 4093 (page_index->page_len * 4094 CTL_PAGE_CURRENT)); 4095 saved_page = (struct copan_debugconf_subpage *) 4096 (page_index->page_data + 4097 (page_index->page_len * 4098 CTL_PAGE_SAVED)); 4099 break; 4100 } 4101 default: 4102 panic("invalid subpage value %d", 4103 page_index->subpage); 4104 break; 4105 } 4106 break; 4107 } 4108 default: 4109 panic("invalid page value %d", 4110 page_index->page_code & SMPH_PC_MASK); 4111 break; 4112 } 4113 } 4114 4115 return (CTL_RETVAL_COMPLETE); 4116} 4117 4118/* 4119 * LUN allocation. 4120 * 4121 * Requirements: 4122 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4123 * wants us to allocate the LUN and he can block. 4124 * - ctl_softc is always set 4125 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4126 * 4127 * Returns 0 for success, non-zero (errno) for failure. 4128 */ 4129static int 4130ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4131 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4132{ 4133 struct ctl_lun *nlun, *lun; 4134 struct ctl_frontend *fe; 4135 int lun_number, i; 4136 4137 if (be_lun == NULL) 4138 return (EINVAL); 4139 4140 /* 4141 * We currently only support Direct Access or Processor LUN types. 4142 */ 4143 switch (be_lun->lun_type) { 4144 case T_DIRECT: 4145 break; 4146 case T_PROCESSOR: 4147 break; 4148 case T_SEQUENTIAL: 4149 case T_CHANGER: 4150 default: 4151 be_lun->lun_config_status(be_lun->be_lun, 4152 CTL_LUN_CONFIG_FAILURE); 4153 break; 4154 } 4155 if (ctl_lun == NULL) { 4156 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4157 if (lun == NULL) { 4158 be_lun->lun_config_status(lun->be_lun->be_lun, 4159 CTL_LUN_CONFIG_FAILURE); 4160 return (-ENOMEM); 4161 } 4162 lun->flags = CTL_LUN_MALLOCED; 4163 } else 4164 lun = ctl_lun; 4165 4166 memset(lun, 0, sizeof(*lun)); 4167 4168 mtx_lock(&ctl_softc->ctl_lock); 4169 /* 4170 * See if the caller requested a particular LUN number. If so, see 4171 * if it is available. Otherwise, allocate the first available LUN. 4172 */ 4173 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4174 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4175 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4176 mtx_unlock(&ctl_softc->ctl_lock); 4177 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4178 printf("ctl: requested LUN ID %d is higher " 4179 "than CTL_MAX_LUNS - 1 (%d)\n", 4180 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4181 } else { 4182 /* 4183 * XXX KDM return an error, or just assign 4184 * another LUN ID in this case?? 4185 */ 4186 printf("ctl: requested LUN ID %d is already " 4187 "in use\n", be_lun->req_lun_id); 4188 } 4189 if (lun->flags & CTL_LUN_MALLOCED) 4190 free(lun, M_CTL); 4191 be_lun->lun_config_status(be_lun->be_lun, 4192 CTL_LUN_CONFIG_FAILURE); 4193 return (ENOSPC); 4194 } 4195 lun_number = be_lun->req_lun_id; 4196 } else { 4197 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4198 if (lun_number == -1) { 4199 mtx_unlock(&ctl_softc->ctl_lock); 4200 printf("ctl: can't allocate LUN on target %ju, out of " 4201 "LUNs\n", (uintmax_t)target_id.id); 4202 if (lun->flags & CTL_LUN_MALLOCED) 4203 free(lun, M_CTL); 4204 be_lun->lun_config_status(be_lun->be_lun, 4205 CTL_LUN_CONFIG_FAILURE); 4206 return (ENOSPC); 4207 } 4208 } 4209 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4210 4211 lun->target = target_id; 4212 lun->lun = lun_number; 4213 lun->be_lun = be_lun; 4214 /* 4215 * The processor LUN is always enabled. Disk LUNs come on line 4216 * disabled, and must be enabled by the backend. 4217 */ 4218 lun->flags = CTL_LUN_DISABLED; 4219 lun->backend = be_lun->be; 4220 be_lun->ctl_lun = lun; 4221 be_lun->lun_id = lun_number; 4222 atomic_add_int(&be_lun->be->num_luns, 1); 4223 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4224 lun->flags |= CTL_LUN_STOPPED; 4225 4226 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4227 lun->flags |= CTL_LUN_INOPERABLE; 4228 4229 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4230 lun->flags |= CTL_LUN_PRIMARY_SC; 4231 4232 lun->ctl_softc = ctl_softc; 4233 TAILQ_INIT(&lun->ooa_queue); 4234 TAILQ_INIT(&lun->blocked_queue); 4235 STAILQ_INIT(&lun->error_list); 4236 4237 /* 4238 * Initialize the mode page index. 4239 */ 4240 ctl_init_page_index(lun); 4241 4242 /* 4243 * Set the poweron UA for all initiators on this LUN only. 4244 */ 4245 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4246 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4247 4248 /* 4249 * Now, before we insert this lun on the lun list, set the lun 4250 * inventory changed UA for all other luns. 4251 */ 4252 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4253 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4254 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4255 } 4256 } 4257 4258 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4259 4260 ctl_softc->ctl_luns[lun_number] = lun; 4261 4262 ctl_softc->num_luns++; 4263 4264 /* Setup statistics gathering */ 4265 lun->stats.device_type = be_lun->lun_type; 4266 lun->stats.lun_number = lun_number; 4267 if (lun->stats.device_type == T_DIRECT) 4268 lun->stats.blocksize = be_lun->blocksize; 4269 else 4270 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4271 for (i = 0;i < CTL_MAX_PORTS;i++) 4272 lun->stats.ports[i].targ_port = i; 4273 4274 mtx_unlock(&ctl_softc->ctl_lock); 4275 4276 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4277 4278 /* 4279 * Run through each registered FETD and bring it online if it isn't 4280 * already. Enable the target ID if it hasn't been enabled, and 4281 * enable this particular LUN. 4282 */ 4283 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4284 int retval; 4285 4286 /* 4287 * XXX KDM this only works for ONE TARGET ID. We'll need 4288 * to do things differently if we go to a multiple target 4289 * ID scheme. 4290 */ 4291 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4292 4293 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4294 if (retval != 0) { 4295 printf("ctl_alloc_lun: FETD %s port %d " 4296 "returned error %d for targ_enable on " 4297 "target %ju\n", fe->port_name, 4298 fe->targ_port, retval, 4299 (uintmax_t)target_id.id); 4300 } else 4301 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4302 } 4303 4304 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4305 if (retval != 0) { 4306 printf("ctl_alloc_lun: FETD %s port %d returned error " 4307 "%d for lun_enable on target %ju lun %d\n", 4308 fe->port_name, fe->targ_port, retval, 4309 (uintmax_t)target_id.id, lun_number); 4310 } else 4311 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4312 } 4313 return (0); 4314} 4315 4316/* 4317 * Delete a LUN. 4318 * Assumptions: 4319 * - caller holds ctl_softc->ctl_lock. 4320 * - LUN has already been marked invalid and any pending I/O has been taken 4321 * care of. 4322 */ 4323static int 4324ctl_free_lun(struct ctl_lun *lun) 4325{ 4326 struct ctl_softc *softc; 4327#if 0 4328 struct ctl_frontend *fe; 4329#endif 4330 struct ctl_lun *nlun; 4331 union ctl_io *io, *next_io; 4332 int i; 4333 4334 softc = lun->ctl_softc; 4335 4336 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4337 4338 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4339 4340 softc->ctl_luns[lun->lun] = NULL; 4341 4342 if (TAILQ_FIRST(&lun->ooa_queue) != NULL) { 4343 printf("ctl_free_lun: aieee!! freeing a LUN with " 4344 "outstanding I/O!!\n"); 4345 } 4346 4347 /* 4348 * If we have anything pending on the RtR queue, remove it. 4349 */ 4350 for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL; 4351 io = next_io) { 4352 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 4353 if ((io->io_hdr.nexus.targ_target.id == lun->target.id) 4354 && (io->io_hdr.nexus.targ_lun == lun->lun)) 4355 STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr, 4356 ctl_io_hdr, links); 4357 } 4358 4359 /* 4360 * Then remove everything from the blocked queue. 4361 */ 4362 for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL; 4363 io = next_io) { 4364 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links); 4365 TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links); 4366 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 4367 } 4368 4369 /* 4370 * Now clear out the OOA queue, and free all the I/O. 4371 * XXX KDM should we notify the FETD here? We probably need to 4372 * quiesce the LUN before deleting it. 4373 */ 4374 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL; 4375 io = next_io) { 4376 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links); 4377 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 4378 ctl_free_io_internal(io, /*have_lock*/ 1); 4379 } 4380 4381 softc->num_luns--; 4382 4383 /* 4384 * XXX KDM this scheme only works for a single target/multiple LUN 4385 * setup. It needs to be revamped for a multiple target scheme. 4386 * 4387 * XXX KDM this results in fe->lun_disable() getting called twice, 4388 * once when ctl_disable_lun() is called, and a second time here. 4389 * We really need to re-think the LUN disable semantics. There 4390 * should probably be several steps/levels to LUN removal: 4391 * - disable 4392 * - invalidate 4393 * - free 4394 * 4395 * Right now we only have a disable method when communicating to 4396 * the front end ports, at least for individual LUNs. 4397 */ 4398#if 0 4399 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4400 int retval; 4401 4402 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4403 lun->lun); 4404 if (retval != 0) { 4405 printf("ctl_free_lun: FETD %s port %d returned error " 4406 "%d for lun_disable on target %ju lun %jd\n", 4407 fe->port_name, fe->targ_port, retval, 4408 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4409 } 4410 4411 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4412 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4413 4414 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4415 if (retval != 0) { 4416 printf("ctl_free_lun: FETD %s port %d " 4417 "returned error %d for targ_disable on " 4418 "target %ju\n", fe->port_name, 4419 fe->targ_port, retval, 4420 (uintmax_t)lun->target.id); 4421 } else 4422 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4423 4424 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4425 continue; 4426 4427#if 0 4428 fe->port_offline(fe->onoff_arg); 4429 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4430#endif 4431 } 4432 } 4433#endif 4434 4435 /* 4436 * Tell the backend to free resources, if this LUN has a backend. 4437 */ 4438 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4439 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4440 4441 if (lun->flags & CTL_LUN_MALLOCED) 4442 free(lun, M_CTL); 4443 4444 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4445 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4446 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4447 } 4448 } 4449 4450 return (0); 4451} 4452 4453static void 4454ctl_create_lun(struct ctl_be_lun *be_lun) 4455{ 4456 struct ctl_softc *ctl_softc; 4457 4458 ctl_softc = control_softc; 4459 4460 /* 4461 * ctl_alloc_lun() should handle all potential failure cases. 4462 */ 4463 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4464} 4465 4466int 4467ctl_add_lun(struct ctl_be_lun *be_lun) 4468{ 4469 struct ctl_softc *ctl_softc; 4470 4471 ctl_softc = control_softc; 4472 4473 mtx_lock(&ctl_softc->ctl_lock); 4474 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4475 mtx_unlock(&ctl_softc->ctl_lock); 4476 4477 ctl_wakeup_thread(); 4478 4479 return (0); 4480} 4481 4482int 4483ctl_enable_lun(struct ctl_be_lun *be_lun) 4484{ 4485 struct ctl_softc *ctl_softc; 4486 struct ctl_frontend *fe, *nfe; 4487 struct ctl_lun *lun; 4488 int retval; 4489 4490 ctl_softc = control_softc; 4491 4492 lun = (struct ctl_lun *)be_lun->ctl_lun; 4493 4494 mtx_lock(&ctl_softc->ctl_lock); 4495 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4496 /* 4497 * eh? Why did we get called if the LUN is already 4498 * enabled? 4499 */ 4500 mtx_unlock(&ctl_softc->ctl_lock); 4501 return (0); 4502 } 4503 lun->flags &= ~CTL_LUN_DISABLED; 4504 4505 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4506 nfe = STAILQ_NEXT(fe, links); 4507 4508 /* 4509 * Drop the lock while we call the FETD's enable routine. 4510 * This can lead to a callback into CTL (at least in the 4511 * case of the internal initiator frontend. 4512 */ 4513 mtx_unlock(&ctl_softc->ctl_lock); 4514 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4515 mtx_lock(&ctl_softc->ctl_lock); 4516 if (retval != 0) { 4517 printf("%s: FETD %s port %d returned error " 4518 "%d for lun_enable on target %ju lun %jd\n", 4519 __func__, fe->port_name, fe->targ_port, retval, 4520 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4521 } 4522#if 0 4523 else { 4524 /* NOTE: TODO: why does lun enable affect port status? */ 4525 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4526 } 4527#endif 4528 } 4529 4530 mtx_unlock(&ctl_softc->ctl_lock); 4531 4532 return (0); 4533} 4534 4535int 4536ctl_disable_lun(struct ctl_be_lun *be_lun) 4537{ 4538 struct ctl_softc *ctl_softc; 4539 struct ctl_frontend *fe; 4540 struct ctl_lun *lun; 4541 int retval; 4542 4543 ctl_softc = control_softc; 4544 4545 lun = (struct ctl_lun *)be_lun->ctl_lun; 4546 4547 mtx_lock(&ctl_softc->ctl_lock); 4548 4549 if (lun->flags & CTL_LUN_DISABLED) { 4550 mtx_unlock(&ctl_softc->ctl_lock); 4551 return (0); 4552 } 4553 lun->flags |= CTL_LUN_DISABLED; 4554 4555 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4556 mtx_unlock(&ctl_softc->ctl_lock); 4557 /* 4558 * Drop the lock before we call the frontend's disable 4559 * routine, to avoid lock order reversals. 4560 * 4561 * XXX KDM what happens if the frontend list changes while 4562 * we're traversing it? It's unlikely, but should be handled. 4563 */ 4564 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4565 lun->lun); 4566 mtx_lock(&ctl_softc->ctl_lock); 4567 if (retval != 0) { 4568 printf("ctl_alloc_lun: FETD %s port %d returned error " 4569 "%d for lun_disable on target %ju lun %jd\n", 4570 fe->port_name, fe->targ_port, retval, 4571 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4572 } 4573 } 4574 4575 mtx_unlock(&ctl_softc->ctl_lock); 4576 4577 return (0); 4578} 4579 4580int 4581ctl_start_lun(struct ctl_be_lun *be_lun) 4582{ 4583 struct ctl_softc *ctl_softc; 4584 struct ctl_lun *lun; 4585 4586 ctl_softc = control_softc; 4587 4588 lun = (struct ctl_lun *)be_lun->ctl_lun; 4589 4590 mtx_lock(&ctl_softc->ctl_lock); 4591 lun->flags &= ~CTL_LUN_STOPPED; 4592 mtx_unlock(&ctl_softc->ctl_lock); 4593 4594 return (0); 4595} 4596 4597int 4598ctl_stop_lun(struct ctl_be_lun *be_lun) 4599{ 4600 struct ctl_softc *ctl_softc; 4601 struct ctl_lun *lun; 4602 4603 ctl_softc = control_softc; 4604 4605 lun = (struct ctl_lun *)be_lun->ctl_lun; 4606 4607 mtx_lock(&ctl_softc->ctl_lock); 4608 lun->flags |= CTL_LUN_STOPPED; 4609 mtx_unlock(&ctl_softc->ctl_lock); 4610 4611 return (0); 4612} 4613 4614int 4615ctl_lun_offline(struct ctl_be_lun *be_lun) 4616{ 4617 struct ctl_softc *ctl_softc; 4618 struct ctl_lun *lun; 4619 4620 ctl_softc = control_softc; 4621 4622 lun = (struct ctl_lun *)be_lun->ctl_lun; 4623 4624 mtx_lock(&ctl_softc->ctl_lock); 4625 lun->flags |= CTL_LUN_OFFLINE; 4626 mtx_unlock(&ctl_softc->ctl_lock); 4627 4628 return (0); 4629} 4630 4631int 4632ctl_lun_online(struct ctl_be_lun *be_lun) 4633{ 4634 struct ctl_softc *ctl_softc; 4635 struct ctl_lun *lun; 4636 4637 ctl_softc = control_softc; 4638 4639 lun = (struct ctl_lun *)be_lun->ctl_lun; 4640 4641 mtx_lock(&ctl_softc->ctl_lock); 4642 lun->flags &= ~CTL_LUN_OFFLINE; 4643 mtx_unlock(&ctl_softc->ctl_lock); 4644 4645 return (0); 4646} 4647 4648int 4649ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4650{ 4651 struct ctl_softc *ctl_softc; 4652 struct ctl_lun *lun; 4653 4654 ctl_softc = control_softc; 4655 4656 lun = (struct ctl_lun *)be_lun->ctl_lun; 4657 4658 mtx_lock(&ctl_softc->ctl_lock); 4659 4660 /* 4661 * The LUN needs to be disabled before it can be marked invalid. 4662 */ 4663 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4664 mtx_unlock(&ctl_softc->ctl_lock); 4665 return (-1); 4666 } 4667 /* 4668 * Mark the LUN invalid. 4669 */ 4670 lun->flags |= CTL_LUN_INVALID; 4671 4672 /* 4673 * If there is nothing in the OOA queue, go ahead and free the LUN. 4674 * If we have something in the OOA queue, we'll free it when the 4675 * last I/O completes. 4676 */ 4677 if (TAILQ_FIRST(&lun->ooa_queue) == NULL) 4678 ctl_free_lun(lun); 4679 mtx_unlock(&ctl_softc->ctl_lock); 4680 4681 return (0); 4682} 4683 4684int 4685ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4686{ 4687 struct ctl_softc *ctl_softc; 4688 struct ctl_lun *lun; 4689 4690 ctl_softc = control_softc; 4691 lun = (struct ctl_lun *)be_lun->ctl_lun; 4692 4693 mtx_lock(&ctl_softc->ctl_lock); 4694 lun->flags |= CTL_LUN_INOPERABLE; 4695 mtx_unlock(&ctl_softc->ctl_lock); 4696 4697 return (0); 4698} 4699 4700int 4701ctl_lun_operable(struct ctl_be_lun *be_lun) 4702{ 4703 struct ctl_softc *ctl_softc; 4704 struct ctl_lun *lun; 4705 4706 ctl_softc = control_softc; 4707 lun = (struct ctl_lun *)be_lun->ctl_lun; 4708 4709 mtx_lock(&ctl_softc->ctl_lock); 4710 lun->flags &= ~CTL_LUN_INOPERABLE; 4711 mtx_unlock(&ctl_softc->ctl_lock); 4712 4713 return (0); 4714} 4715 4716int 4717ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4718 int lock) 4719{ 4720 struct ctl_softc *softc; 4721 struct ctl_lun *lun; 4722 struct copan_aps_subpage *current_sp; 4723 struct ctl_page_index *page_index; 4724 int i; 4725 4726 softc = control_softc; 4727 4728 mtx_lock(&softc->ctl_lock); 4729 4730 lun = (struct ctl_lun *)be_lun->ctl_lun; 4731 4732 page_index = NULL; 4733 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4734 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4735 APS_PAGE_CODE) 4736 continue; 4737 4738 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4739 continue; 4740 page_index = &lun->mode_pages.index[i]; 4741 } 4742 4743 if (page_index == NULL) { 4744 mtx_unlock(&softc->ctl_lock); 4745 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4746 (uintmax_t)lun->lun); 4747 return (1); 4748 } 4749#if 0 4750 if ((softc->aps_locked_lun != 0) 4751 && (softc->aps_locked_lun != lun->lun)) { 4752 printf("%s: attempt to lock LUN %llu when %llu is already " 4753 "locked\n"); 4754 mtx_unlock(&softc->ctl_lock); 4755 return (1); 4756 } 4757#endif 4758 4759 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4760 (page_index->page_len * CTL_PAGE_CURRENT)); 4761 4762 if (lock != 0) { 4763 current_sp->lock_active = APS_LOCK_ACTIVE; 4764 softc->aps_locked_lun = lun->lun; 4765 } else { 4766 current_sp->lock_active = 0; 4767 softc->aps_locked_lun = 0; 4768 } 4769 4770 4771 /* 4772 * If we're in HA mode, try to send the lock message to the other 4773 * side. 4774 */ 4775 if (ctl_is_single == 0) { 4776 int isc_retval; 4777 union ctl_ha_msg lock_msg; 4778 4779 lock_msg.hdr.nexus = *nexus; 4780 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4781 if (lock != 0) 4782 lock_msg.aps.lock_flag = 1; 4783 else 4784 lock_msg.aps.lock_flag = 0; 4785 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4786 sizeof(lock_msg), 0); 4787 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4788 printf("%s: APS (lock=%d) error returned from " 4789 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4790 mtx_unlock(&softc->ctl_lock); 4791 return (1); 4792 } 4793 } 4794 4795 mtx_unlock(&softc->ctl_lock); 4796 4797 return (0); 4798} 4799 4800/* 4801 * Backend "memory move is complete" callback for requests that never 4802 * make it down to say RAIDCore's configuration code. 4803 */ 4804int 4805ctl_config_move_done(union ctl_io *io) 4806{ 4807 int retval; 4808 4809 retval = CTL_RETVAL_COMPLETE; 4810 4811 4812 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4813 /* 4814 * XXX KDM this shouldn't happen, but what if it does? 4815 */ 4816 if (io->io_hdr.io_type != CTL_IO_SCSI) 4817 panic("I/O type isn't CTL_IO_SCSI!"); 4818 4819 if ((io->io_hdr.port_status == 0) 4820 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4821 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4822 io->io_hdr.status = CTL_SUCCESS; 4823 else if ((io->io_hdr.port_status != 0) 4824 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4825 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4826 /* 4827 * For hardware error sense keys, the sense key 4828 * specific value is defined to be a retry count, 4829 * but we use it to pass back an internal FETD 4830 * error code. XXX KDM Hopefully the FETD is only 4831 * using 16 bits for an error code, since that's 4832 * all the space we have in the sks field. 4833 */ 4834 ctl_set_internal_failure(&io->scsiio, 4835 /*sks_valid*/ 1, 4836 /*retry_count*/ 4837 io->io_hdr.port_status); 4838 free(io->scsiio.kern_data_ptr, M_CTL); 4839 ctl_done(io); 4840 goto bailout; 4841 } 4842 4843 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4844 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4845 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4846 /* 4847 * XXX KDM just assuming a single pointer here, and not a 4848 * S/G list. If we start using S/G lists for config data, 4849 * we'll need to know how to clean them up here as well. 4850 */ 4851 free(io->scsiio.kern_data_ptr, M_CTL); 4852 /* Hopefully the user has already set the status... */ 4853 ctl_done(io); 4854 } else { 4855 /* 4856 * XXX KDM now we need to continue data movement. Some 4857 * options: 4858 * - call ctl_scsiio() again? We don't do this for data 4859 * writes, because for those at least we know ahead of 4860 * time where the write will go and how long it is. For 4861 * config writes, though, that information is largely 4862 * contained within the write itself, thus we need to 4863 * parse out the data again. 4864 * 4865 * - Call some other function once the data is in? 4866 */ 4867 4868 /* 4869 * XXX KDM call ctl_scsiio() again for now, and check flag 4870 * bits to see whether we're allocated or not. 4871 */ 4872 retval = ctl_scsiio(&io->scsiio); 4873 } 4874bailout: 4875 return (retval); 4876} 4877 4878/* 4879 * This gets called by a backend driver when it is done with a 4880 * configuration write. 4881 */ 4882void 4883ctl_config_write_done(union ctl_io *io) 4884{ 4885 /* 4886 * If the IO_CONT flag is set, we need to call the supplied 4887 * function to continue processing the I/O, instead of completing 4888 * the I/O just yet. 4889 * 4890 * If there is an error, though, we don't want to keep processing. 4891 * Instead, just send status back to the initiator. 4892 */ 4893 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 4894 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 4895 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 4896 io->scsiio.io_cont(io); 4897 return; 4898 } 4899 /* 4900 * Since a configuration write can be done for commands that actually 4901 * have data allocated, like write buffer, and commands that have 4902 * no data, like start/stop unit, we need to check here. 4903 */ 4904 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 4905 free(io->scsiio.kern_data_ptr, M_CTL); 4906 ctl_done(io); 4907} 4908 4909/* 4910 * SCSI release command. 4911 */ 4912int 4913ctl_scsi_release(struct ctl_scsiio *ctsio) 4914{ 4915 int length, longid, thirdparty_id, resv_id; 4916 struct ctl_softc *ctl_softc; 4917 struct ctl_lun *lun; 4918 4919 length = 0; 4920 resv_id = 0; 4921 4922 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 4923 4924 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 4925 ctl_softc = control_softc; 4926 4927 switch (ctsio->cdb[0]) { 4928 case RELEASE: { 4929 struct scsi_release *cdb; 4930 4931 cdb = (struct scsi_release *)ctsio->cdb; 4932 if ((cdb->byte2 & 0x1f) != 0) { 4933 ctl_set_invalid_field(ctsio, 4934 /*sks_valid*/ 1, 4935 /*command*/ 1, 4936 /*field*/ 1, 4937 /*bit_valid*/ 0, 4938 /*bit*/ 0); 4939 ctl_done((union ctl_io *)ctsio); 4940 return (CTL_RETVAL_COMPLETE); 4941 } 4942 break; 4943 } 4944 case RELEASE_10: { 4945 struct scsi_release_10 *cdb; 4946 4947 cdb = (struct scsi_release_10 *)ctsio->cdb; 4948 4949 if ((cdb->byte2 & SR10_EXTENT) != 0) { 4950 ctl_set_invalid_field(ctsio, 4951 /*sks_valid*/ 1, 4952 /*command*/ 1, 4953 /*field*/ 1, 4954 /*bit_valid*/ 1, 4955 /*bit*/ 0); 4956 ctl_done((union ctl_io *)ctsio); 4957 return (CTL_RETVAL_COMPLETE); 4958 4959 } 4960 4961 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 4962 ctl_set_invalid_field(ctsio, 4963 /*sks_valid*/ 1, 4964 /*command*/ 1, 4965 /*field*/ 1, 4966 /*bit_valid*/ 1, 4967 /*bit*/ 4); 4968 ctl_done((union ctl_io *)ctsio); 4969 return (CTL_RETVAL_COMPLETE); 4970 } 4971 4972 if (cdb->byte2 & SR10_LONGID) 4973 longid = 1; 4974 else 4975 thirdparty_id = cdb->thirdparty_id; 4976 4977 resv_id = cdb->resv_id; 4978 length = scsi_2btoul(cdb->length); 4979 break; 4980 } 4981 } 4982 4983 4984 /* 4985 * XXX KDM right now, we only support LUN reservation. We don't 4986 * support 3rd party reservations, or extent reservations, which 4987 * might actually need the parameter list. If we've gotten this 4988 * far, we've got a LUN reservation. Anything else got kicked out 4989 * above. So, according to SPC, ignore the length. 4990 */ 4991 length = 0; 4992 4993 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 4994 && (length > 0)) { 4995 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 4996 if (ctsio->kern_data_ptr == NULL) { 4997 ctsio->io_hdr.status = CTL_SCSI_ERROR; 4998 ctsio->io_hdr.status = SCSI_STATUS_BUSY; 4999 ctl_done((union ctl_io *)ctsio); 5000 return (CTL_RETVAL_COMPLETE); 5001 } 5002 ctsio->kern_data_len = length; 5003 ctsio->kern_total_len = length; 5004 ctsio->kern_data_resid = 0; 5005 ctsio->kern_rel_offset = 0; 5006 ctsio->kern_sg_entries = 0; 5007 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5008 ctsio->be_move_done = ctl_config_move_done; 5009 ctl_datamove((union ctl_io *)ctsio); 5010 5011 return (CTL_RETVAL_COMPLETE); 5012 } 5013 5014 if (length > 0) 5015 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5016 5017 mtx_lock(&ctl_softc->ctl_lock); 5018 5019 /* 5020 * According to SPC, it is not an error for an intiator to attempt 5021 * to release a reservation on a LUN that isn't reserved, or that 5022 * is reserved by another initiator. The reservation can only be 5023 * released, though, by the initiator who made it or by one of 5024 * several reset type events. 5025 */ 5026 if (lun->flags & CTL_LUN_RESERVED) { 5027 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5028 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5029 && (ctsio->io_hdr.nexus.targ_target.id == 5030 lun->rsv_nexus.targ_target.id)) { 5031 lun->flags &= ~CTL_LUN_RESERVED; 5032 } 5033 } 5034 5035 ctsio->scsi_status = SCSI_STATUS_OK; 5036 ctsio->io_hdr.status = CTL_SUCCESS; 5037 5038 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5039 free(ctsio->kern_data_ptr, M_CTL); 5040 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5041 } 5042 5043 mtx_unlock(&ctl_softc->ctl_lock); 5044 5045 ctl_done((union ctl_io *)ctsio); 5046 return (CTL_RETVAL_COMPLETE); 5047} 5048 5049int 5050ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5051{ 5052 int extent, thirdparty, longid; 5053 int resv_id, length; 5054 uint64_t thirdparty_id; 5055 struct ctl_softc *ctl_softc; 5056 struct ctl_lun *lun; 5057 5058 extent = 0; 5059 thirdparty = 0; 5060 longid = 0; 5061 resv_id = 0; 5062 length = 0; 5063 thirdparty_id = 0; 5064 5065 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5066 5067 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5068 ctl_softc = control_softc; 5069 5070 switch (ctsio->cdb[0]) { 5071 case RESERVE: { 5072 struct scsi_reserve *cdb; 5073 5074 cdb = (struct scsi_reserve *)ctsio->cdb; 5075 if ((cdb->byte2 & 0x1f) != 0) { 5076 ctl_set_invalid_field(ctsio, 5077 /*sks_valid*/ 1, 5078 /*command*/ 1, 5079 /*field*/ 1, 5080 /*bit_valid*/ 0, 5081 /*bit*/ 0); 5082 ctl_done((union ctl_io *)ctsio); 5083 return (CTL_RETVAL_COMPLETE); 5084 } 5085 resv_id = cdb->resv_id; 5086 length = scsi_2btoul(cdb->length); 5087 break; 5088 } 5089 case RESERVE_10: { 5090 struct scsi_reserve_10 *cdb; 5091 5092 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5093 5094 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5095 ctl_set_invalid_field(ctsio, 5096 /*sks_valid*/ 1, 5097 /*command*/ 1, 5098 /*field*/ 1, 5099 /*bit_valid*/ 1, 5100 /*bit*/ 0); 5101 ctl_done((union ctl_io *)ctsio); 5102 return (CTL_RETVAL_COMPLETE); 5103 } 5104 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5105 ctl_set_invalid_field(ctsio, 5106 /*sks_valid*/ 1, 5107 /*command*/ 1, 5108 /*field*/ 1, 5109 /*bit_valid*/ 1, 5110 /*bit*/ 4); 5111 ctl_done((union ctl_io *)ctsio); 5112 return (CTL_RETVAL_COMPLETE); 5113 } 5114 if (cdb->byte2 & SR10_LONGID) 5115 longid = 1; 5116 else 5117 thirdparty_id = cdb->thirdparty_id; 5118 5119 resv_id = cdb->resv_id; 5120 length = scsi_2btoul(cdb->length); 5121 break; 5122 } 5123 } 5124 5125 /* 5126 * XXX KDM right now, we only support LUN reservation. We don't 5127 * support 3rd party reservations, or extent reservations, which 5128 * might actually need the parameter list. If we've gotten this 5129 * far, we've got a LUN reservation. Anything else got kicked out 5130 * above. So, according to SPC, ignore the length. 5131 */ 5132 length = 0; 5133 5134 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5135 && (length > 0)) { 5136 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5137 if (ctsio->kern_data_ptr == NULL) { 5138 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5139 ctsio->io_hdr.status = SCSI_STATUS_BUSY; 5140 ctl_done((union ctl_io *)ctsio); 5141 return (CTL_RETVAL_COMPLETE); 5142 } 5143 ctsio->kern_data_len = length; 5144 ctsio->kern_total_len = length; 5145 ctsio->kern_data_resid = 0; 5146 ctsio->kern_rel_offset = 0; 5147 ctsio->kern_sg_entries = 0; 5148 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5149 ctsio->be_move_done = ctl_config_move_done; 5150 ctl_datamove((union ctl_io *)ctsio); 5151 5152 return (CTL_RETVAL_COMPLETE); 5153 } 5154 5155 if (length > 0) 5156 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5157 5158 mtx_lock(&ctl_softc->ctl_lock); 5159 if (lun->flags & CTL_LUN_RESERVED) { 5160 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5161 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5162 || (ctsio->io_hdr.nexus.targ_target.id != 5163 lun->rsv_nexus.targ_target.id)) { 5164 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5165 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5166 goto bailout; 5167 } 5168 } 5169 5170 lun->flags |= CTL_LUN_RESERVED; 5171 lun->rsv_nexus = ctsio->io_hdr.nexus; 5172 5173 ctsio->scsi_status = SCSI_STATUS_OK; 5174 ctsio->io_hdr.status = CTL_SUCCESS; 5175 5176bailout: 5177 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5178 free(ctsio->kern_data_ptr, M_CTL); 5179 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5180 } 5181 5182 mtx_unlock(&ctl_softc->ctl_lock); 5183 5184 ctl_done((union ctl_io *)ctsio); 5185 return (CTL_RETVAL_COMPLETE); 5186} 5187 5188int 5189ctl_start_stop(struct ctl_scsiio *ctsio) 5190{ 5191 struct scsi_start_stop_unit *cdb; 5192 struct ctl_lun *lun; 5193 struct ctl_softc *ctl_softc; 5194 int retval; 5195 5196 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5197 5198 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5199 ctl_softc = control_softc; 5200 retval = 0; 5201 5202 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5203 5204 /* 5205 * XXX KDM 5206 * We don't support the immediate bit on a stop unit. In order to 5207 * do that, we would need to code up a way to know that a stop is 5208 * pending, and hold off any new commands until it completes, one 5209 * way or another. Then we could accept or reject those commands 5210 * depending on its status. We would almost need to do the reverse 5211 * of what we do below for an immediate start -- return the copy of 5212 * the ctl_io to the FETD with status to send to the host (and to 5213 * free the copy!) and then free the original I/O once the stop 5214 * actually completes. That way, the OOA queue mechanism can work 5215 * to block commands that shouldn't proceed. Another alternative 5216 * would be to put the copy in the queue in place of the original, 5217 * and return the original back to the caller. That could be 5218 * slightly safer.. 5219 */ 5220 if ((cdb->byte2 & SSS_IMMED) 5221 && ((cdb->how & SSS_START) == 0)) { 5222 ctl_set_invalid_field(ctsio, 5223 /*sks_valid*/ 1, 5224 /*command*/ 1, 5225 /*field*/ 1, 5226 /*bit_valid*/ 1, 5227 /*bit*/ 0); 5228 ctl_done((union ctl_io *)ctsio); 5229 return (CTL_RETVAL_COMPLETE); 5230 } 5231 5232 /* 5233 * We don't support the power conditions field. We need to check 5234 * this prior to checking the load/eject and start/stop bits. 5235 */ 5236 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5237 ctl_set_invalid_field(ctsio, 5238 /*sks_valid*/ 1, 5239 /*command*/ 1, 5240 /*field*/ 4, 5241 /*bit_valid*/ 1, 5242 /*bit*/ 4); 5243 ctl_done((union ctl_io *)ctsio); 5244 return (CTL_RETVAL_COMPLETE); 5245 } 5246 5247 /* 5248 * Media isn't removable, so we can't load or eject it. 5249 */ 5250 if ((cdb->how & SSS_LOEJ) != 0) { 5251 ctl_set_invalid_field(ctsio, 5252 /*sks_valid*/ 1, 5253 /*command*/ 1, 5254 /*field*/ 4, 5255 /*bit_valid*/ 1, 5256 /*bit*/ 1); 5257 ctl_done((union ctl_io *)ctsio); 5258 return (CTL_RETVAL_COMPLETE); 5259 } 5260 5261 if ((lun->flags & CTL_LUN_PR_RESERVED) 5262 && ((cdb->how & SSS_START)==0)) { 5263 uint32_t residx; 5264 5265 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5266 if (!lun->per_res[residx].registered 5267 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5268 5269 ctl_set_reservation_conflict(ctsio); 5270 ctl_done((union ctl_io *)ctsio); 5271 return (CTL_RETVAL_COMPLETE); 5272 } 5273 } 5274 5275 /* 5276 * If there is no backend on this device, we can't start or stop 5277 * it. In theory we shouldn't get any start/stop commands in the 5278 * first place at this level if the LUN doesn't have a backend. 5279 * That should get stopped by the command decode code. 5280 */ 5281 if (lun->backend == NULL) { 5282 ctl_set_invalid_opcode(ctsio); 5283 ctl_done((union ctl_io *)ctsio); 5284 return (CTL_RETVAL_COMPLETE); 5285 } 5286 5287 /* 5288 * XXX KDM Copan-specific offline behavior. 5289 * Figure out a reasonable way to port this? 5290 */ 5291#ifdef NEEDTOPORT 5292 mtx_lock(&ctl_softc->ctl_lock); 5293 5294 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5295 && (lun->flags & CTL_LUN_OFFLINE)) { 5296 /* 5297 * If the LUN is offline, and the on/offline bit isn't set, 5298 * reject the start or stop. Otherwise, let it through. 5299 */ 5300 mtx_unlock(&ctl_softc->ctl_lock); 5301 ctl_set_lun_not_ready(ctsio); 5302 ctl_done((union ctl_io *)ctsio); 5303 } else { 5304 mtx_unlock(&ctl_softc->ctl_lock); 5305#endif /* NEEDTOPORT */ 5306 /* 5307 * This could be a start or a stop when we're online, 5308 * or a stop/offline or start/online. A start or stop when 5309 * we're offline is covered in the case above. 5310 */ 5311 /* 5312 * In the non-immediate case, we send the request to 5313 * the backend and return status to the user when 5314 * it is done. 5315 * 5316 * In the immediate case, we allocate a new ctl_io 5317 * to hold a copy of the request, and send that to 5318 * the backend. We then set good status on the 5319 * user's request and return it immediately. 5320 */ 5321 if (cdb->byte2 & SSS_IMMED) { 5322 union ctl_io *new_io; 5323 5324 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5325 if (new_io == NULL) { 5326 ctl_set_busy(ctsio); 5327 ctl_done((union ctl_io *)ctsio); 5328 } else { 5329 ctl_copy_io((union ctl_io *)ctsio, 5330 new_io); 5331 retval = lun->backend->config_write(new_io); 5332 ctl_set_success(ctsio); 5333 ctl_done((union ctl_io *)ctsio); 5334 } 5335 } else { 5336 retval = lun->backend->config_write( 5337 (union ctl_io *)ctsio); 5338 } 5339#ifdef NEEDTOPORT 5340 } 5341#endif 5342 return (retval); 5343} 5344 5345/* 5346 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5347 * we don't really do anything with the LBA and length fields if the user 5348 * passes them in. Instead we'll just flush out the cache for the entire 5349 * LUN. 5350 */ 5351int 5352ctl_sync_cache(struct ctl_scsiio *ctsio) 5353{ 5354 struct ctl_lun *lun; 5355 struct ctl_softc *ctl_softc; 5356 uint64_t starting_lba; 5357 uint32_t block_count; 5358 int reladr, immed; 5359 int retval; 5360 5361 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5362 5363 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5364 ctl_softc = control_softc; 5365 retval = 0; 5366 reladr = 0; 5367 immed = 0; 5368 5369 switch (ctsio->cdb[0]) { 5370 case SYNCHRONIZE_CACHE: { 5371 struct scsi_sync_cache *cdb; 5372 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5373 5374 if (cdb->byte2 & SSC_RELADR) 5375 reladr = 1; 5376 5377 if (cdb->byte2 & SSC_IMMED) 5378 immed = 1; 5379 5380 starting_lba = scsi_4btoul(cdb->begin_lba); 5381 block_count = scsi_2btoul(cdb->lb_count); 5382 break; 5383 } 5384 case SYNCHRONIZE_CACHE_16: { 5385 struct scsi_sync_cache_16 *cdb; 5386 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5387 5388 if (cdb->byte2 & SSC_RELADR) 5389 reladr = 1; 5390 5391 if (cdb->byte2 & SSC_IMMED) 5392 immed = 1; 5393 5394 starting_lba = scsi_8btou64(cdb->begin_lba); 5395 block_count = scsi_4btoul(cdb->lb_count); 5396 break; 5397 } 5398 default: 5399 ctl_set_invalid_opcode(ctsio); 5400 ctl_done((union ctl_io *)ctsio); 5401 goto bailout; 5402 break; /* NOTREACHED */ 5403 } 5404 5405 if (immed) { 5406 /* 5407 * We don't support the immediate bit. Since it's in the 5408 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5409 * commands, we can just return the same error in either 5410 * case. 5411 */ 5412 ctl_set_invalid_field(ctsio, 5413 /*sks_valid*/ 1, 5414 /*command*/ 1, 5415 /*field*/ 1, 5416 /*bit_valid*/ 1, 5417 /*bit*/ 1); 5418 ctl_done((union ctl_io *)ctsio); 5419 goto bailout; 5420 } 5421 5422 if (reladr) { 5423 /* 5424 * We don't support the reladr bit either. It can only be 5425 * used with linked commands, and we don't support linked 5426 * commands. Since the bit is in the same place for the 5427 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5428 * just return the same error in either case. 5429 */ 5430 ctl_set_invalid_field(ctsio, 5431 /*sks_valid*/ 1, 5432 /*command*/ 1, 5433 /*field*/ 1, 5434 /*bit_valid*/ 1, 5435 /*bit*/ 0); 5436 ctl_done((union ctl_io *)ctsio); 5437 goto bailout; 5438 } 5439 5440 /* 5441 * We check the LBA and length, but don't do anything with them. 5442 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5443 * get flushed. This check will just help satisfy anyone who wants 5444 * to see an error for an out of range LBA. 5445 */ 5446 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5447 ctl_set_lba_out_of_range(ctsio); 5448 ctl_done((union ctl_io *)ctsio); 5449 goto bailout; 5450 } 5451 5452 /* 5453 * If this LUN has no backend, we can't flush the cache anyway. 5454 */ 5455 if (lun->backend == NULL) { 5456 ctl_set_invalid_opcode(ctsio); 5457 ctl_done((union ctl_io *)ctsio); 5458 goto bailout; 5459 } 5460 5461 /* 5462 * Check to see whether we're configured to send the SYNCHRONIZE 5463 * CACHE command directly to the back end. 5464 */ 5465 mtx_lock(&ctl_softc->ctl_lock); 5466 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5467 && (++(lun->sync_count) >= lun->sync_interval)) { 5468 lun->sync_count = 0; 5469 mtx_unlock(&ctl_softc->ctl_lock); 5470 retval = lun->backend->config_write((union ctl_io *)ctsio); 5471 } else { 5472 mtx_unlock(&ctl_softc->ctl_lock); 5473 ctl_set_success(ctsio); 5474 ctl_done((union ctl_io *)ctsio); 5475 } 5476 5477bailout: 5478 5479 return (retval); 5480} 5481 5482int 5483ctl_format(struct ctl_scsiio *ctsio) 5484{ 5485 struct scsi_format *cdb; 5486 struct ctl_lun *lun; 5487 struct ctl_softc *ctl_softc; 5488 int length, defect_list_len; 5489 5490 CTL_DEBUG_PRINT(("ctl_format\n")); 5491 5492 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5493 ctl_softc = control_softc; 5494 5495 cdb = (struct scsi_format *)ctsio->cdb; 5496 5497 length = 0; 5498 if (cdb->byte2 & SF_FMTDATA) { 5499 if (cdb->byte2 & SF_LONGLIST) 5500 length = sizeof(struct scsi_format_header_long); 5501 else 5502 length = sizeof(struct scsi_format_header_short); 5503 } 5504 5505 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5506 && (length > 0)) { 5507 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5508 if (ctsio->kern_data_ptr == NULL) { 5509 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5510 ctsio->io_hdr.status = SCSI_STATUS_BUSY; 5511 ctl_done((union ctl_io *)ctsio); 5512 return (CTL_RETVAL_COMPLETE); 5513 } 5514 ctsio->kern_data_len = length; 5515 ctsio->kern_total_len = length; 5516 ctsio->kern_data_resid = 0; 5517 ctsio->kern_rel_offset = 0; 5518 ctsio->kern_sg_entries = 0; 5519 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5520 ctsio->be_move_done = ctl_config_move_done; 5521 ctl_datamove((union ctl_io *)ctsio); 5522 5523 return (CTL_RETVAL_COMPLETE); 5524 } 5525 5526 defect_list_len = 0; 5527 5528 if (cdb->byte2 & SF_FMTDATA) { 5529 if (cdb->byte2 & SF_LONGLIST) { 5530 struct scsi_format_header_long *header; 5531 5532 header = (struct scsi_format_header_long *) 5533 ctsio->kern_data_ptr; 5534 5535 defect_list_len = scsi_4btoul(header->defect_list_len); 5536 if (defect_list_len != 0) { 5537 ctl_set_invalid_field(ctsio, 5538 /*sks_valid*/ 1, 5539 /*command*/ 0, 5540 /*field*/ 2, 5541 /*bit_valid*/ 0, 5542 /*bit*/ 0); 5543 goto bailout; 5544 } 5545 } else { 5546 struct scsi_format_header_short *header; 5547 5548 header = (struct scsi_format_header_short *) 5549 ctsio->kern_data_ptr; 5550 5551 defect_list_len = scsi_2btoul(header->defect_list_len); 5552 if (defect_list_len != 0) { 5553 ctl_set_invalid_field(ctsio, 5554 /*sks_valid*/ 1, 5555 /*command*/ 0, 5556 /*field*/ 2, 5557 /*bit_valid*/ 0, 5558 /*bit*/ 0); 5559 goto bailout; 5560 } 5561 } 5562 } 5563 5564 /* 5565 * The format command will clear out the "Medium format corrupted" 5566 * status if set by the configuration code. That status is really 5567 * just a way to notify the host that we have lost the media, and 5568 * get them to issue a command that will basically make them think 5569 * they're blowing away the media. 5570 */ 5571 mtx_lock(&ctl_softc->ctl_lock); 5572 lun->flags &= ~CTL_LUN_INOPERABLE; 5573 mtx_unlock(&ctl_softc->ctl_lock); 5574 5575 ctsio->scsi_status = SCSI_STATUS_OK; 5576 ctsio->io_hdr.status = CTL_SUCCESS; 5577bailout: 5578 5579 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5580 free(ctsio->kern_data_ptr, M_CTL); 5581 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5582 } 5583 5584 ctl_done((union ctl_io *)ctsio); 5585 return (CTL_RETVAL_COMPLETE); 5586} 5587 5588int 5589ctl_write_buffer(struct ctl_scsiio *ctsio) 5590{ 5591 struct scsi_write_buffer *cdb; 5592 struct copan_page_header *header; 5593 struct ctl_lun *lun; 5594 struct ctl_softc *ctl_softc; 5595 int buffer_offset, len; 5596 int retval; 5597 5598 header = NULL; 5599 5600 retval = CTL_RETVAL_COMPLETE; 5601 5602 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5603 5604 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5605 ctl_softc = control_softc; 5606 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5607 5608 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5609 ctl_set_invalid_field(ctsio, 5610 /*sks_valid*/ 1, 5611 /*command*/ 1, 5612 /*field*/ 1, 5613 /*bit_valid*/ 1, 5614 /*bit*/ 4); 5615 ctl_done((union ctl_io *)ctsio); 5616 return (CTL_RETVAL_COMPLETE); 5617 } 5618 if (cdb->buffer_id != 0) { 5619 ctl_set_invalid_field(ctsio, 5620 /*sks_valid*/ 1, 5621 /*command*/ 1, 5622 /*field*/ 2, 5623 /*bit_valid*/ 0, 5624 /*bit*/ 0); 5625 ctl_done((union ctl_io *)ctsio); 5626 return (CTL_RETVAL_COMPLETE); 5627 } 5628 5629 len = scsi_3btoul(cdb->length); 5630 buffer_offset = scsi_3btoul(cdb->offset); 5631 5632 if (len > sizeof(lun->write_buffer)) { 5633 ctl_set_invalid_field(ctsio, 5634 /*sks_valid*/ 1, 5635 /*command*/ 1, 5636 /*field*/ 6, 5637 /*bit_valid*/ 0, 5638 /*bit*/ 0); 5639 ctl_done((union ctl_io *)ctsio); 5640 return (CTL_RETVAL_COMPLETE); 5641 } 5642 5643 if (buffer_offset != 0) { 5644 ctl_set_invalid_field(ctsio, 5645 /*sks_valid*/ 1, 5646 /*command*/ 1, 5647 /*field*/ 3, 5648 /*bit_valid*/ 0, 5649 /*bit*/ 0); 5650 ctl_done((union ctl_io *)ctsio); 5651 return (CTL_RETVAL_COMPLETE); 5652 } 5653 5654 /* 5655 * If we've got a kernel request that hasn't been malloced yet, 5656 * malloc it and tell the caller the data buffer is here. 5657 */ 5658 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5659 ctsio->kern_data_ptr = lun->write_buffer; 5660 ctsio->kern_data_len = len; 5661 ctsio->kern_total_len = len; 5662 ctsio->kern_data_resid = 0; 5663 ctsio->kern_rel_offset = 0; 5664 ctsio->kern_sg_entries = 0; 5665 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5666 ctsio->be_move_done = ctl_config_move_done; 5667 ctl_datamove((union ctl_io *)ctsio); 5668 5669 return (CTL_RETVAL_COMPLETE); 5670 } 5671 5672 ctl_done((union ctl_io *)ctsio); 5673 5674 return (CTL_RETVAL_COMPLETE); 5675} 5676 5677/* 5678 * Note that this function currently doesn't actually do anything inside 5679 * CTL to enforce things if the DQue bit is turned on. 5680 * 5681 * Also note that this function can't be used in the default case, because 5682 * the DQue bit isn't set in the changeable mask for the control mode page 5683 * anyway. This is just here as an example for how to implement a page 5684 * handler, and a placeholder in case we want to allow the user to turn 5685 * tagged queueing on and off. 5686 * 5687 * The D_SENSE bit handling is functional, however, and will turn 5688 * descriptor sense on and off for a given LUN. 5689 */ 5690int 5691ctl_control_page_handler(struct ctl_scsiio *ctsio, 5692 struct ctl_page_index *page_index, uint8_t *page_ptr) 5693{ 5694 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5695 struct ctl_lun *lun; 5696 struct ctl_softc *softc; 5697 int set_ua; 5698 uint32_t initidx; 5699 5700 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5701 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5702 set_ua = 0; 5703 5704 user_cp = (struct scsi_control_page *)page_ptr; 5705 current_cp = (struct scsi_control_page *) 5706 (page_index->page_data + (page_index->page_len * 5707 CTL_PAGE_CURRENT)); 5708 saved_cp = (struct scsi_control_page *) 5709 (page_index->page_data + (page_index->page_len * 5710 CTL_PAGE_SAVED)); 5711 5712 softc = control_softc; 5713 5714 mtx_lock(&softc->ctl_lock); 5715 if (((current_cp->rlec & SCP_DSENSE) == 0) 5716 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 5717 /* 5718 * Descriptor sense is currently turned off and the user 5719 * wants to turn it on. 5720 */ 5721 current_cp->rlec |= SCP_DSENSE; 5722 saved_cp->rlec |= SCP_DSENSE; 5723 lun->flags |= CTL_LUN_SENSE_DESC; 5724 set_ua = 1; 5725 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 5726 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 5727 /* 5728 * Descriptor sense is currently turned on, and the user 5729 * wants to turn it off. 5730 */ 5731 current_cp->rlec &= ~SCP_DSENSE; 5732 saved_cp->rlec &= ~SCP_DSENSE; 5733 lun->flags &= ~CTL_LUN_SENSE_DESC; 5734 set_ua = 1; 5735 } 5736 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 5737 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5738#ifdef NEEDTOPORT 5739 csevent_log(CSC_CTL | CSC_SHELF_SW | 5740 CTL_UNTAG_TO_UNTAG, 5741 csevent_LogType_Trace, 5742 csevent_Severity_Information, 5743 csevent_AlertLevel_Green, 5744 csevent_FRU_Firmware, 5745 csevent_FRU_Unknown, 5746 "Received untagged to untagged transition"); 5747#endif /* NEEDTOPORT */ 5748 } else { 5749#ifdef NEEDTOPORT 5750 csevent_log(CSC_CTL | CSC_SHELF_SW | 5751 CTL_UNTAG_TO_TAG, 5752 csevent_LogType_ConfigChange, 5753 csevent_Severity_Information, 5754 csevent_AlertLevel_Green, 5755 csevent_FRU_Firmware, 5756 csevent_FRU_Unknown, 5757 "Received untagged to tagged " 5758 "queueing transition"); 5759#endif /* NEEDTOPORT */ 5760 5761 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5762 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5763 set_ua = 1; 5764 } 5765 } else { 5766 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5767#ifdef NEEDTOPORT 5768 csevent_log(CSC_CTL | CSC_SHELF_SW | 5769 CTL_TAG_TO_UNTAG, 5770 csevent_LogType_ConfigChange, 5771 csevent_Severity_Warning, 5772 csevent_AlertLevel_Yellow, 5773 csevent_FRU_Firmware, 5774 csevent_FRU_Unknown, 5775 "Received tagged queueing to untagged " 5776 "transition"); 5777#endif /* NEEDTOPORT */ 5778 5779 current_cp->queue_flags |= SCP_QUEUE_DQUE; 5780 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 5781 set_ua = 1; 5782 } else { 5783#ifdef NEEDTOPORT 5784 csevent_log(CSC_CTL | CSC_SHELF_SW | 5785 CTL_TAG_TO_TAG, 5786 csevent_LogType_Trace, 5787 csevent_Severity_Information, 5788 csevent_AlertLevel_Green, 5789 csevent_FRU_Firmware, 5790 csevent_FRU_Unknown, 5791 "Received tagged queueing to tagged " 5792 "queueing transition"); 5793#endif /* NEEDTOPORT */ 5794 } 5795 } 5796 if (set_ua != 0) { 5797 int i; 5798 /* 5799 * Let other initiators know that the mode 5800 * parameters for this LUN have changed. 5801 */ 5802 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 5803 if (i == initidx) 5804 continue; 5805 5806 lun->pending_sense[i].ua_pending |= 5807 CTL_UA_MODE_CHANGE; 5808 } 5809 } 5810 mtx_unlock(&softc->ctl_lock); 5811 5812 return (0); 5813} 5814 5815int 5816ctl_power_sp_handler(struct ctl_scsiio *ctsio, 5817 struct ctl_page_index *page_index, uint8_t *page_ptr) 5818{ 5819 return (0); 5820} 5821 5822int 5823ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 5824 struct ctl_page_index *page_index, int pc) 5825{ 5826 struct copan_power_subpage *page; 5827 5828 page = (struct copan_power_subpage *)page_index->page_data + 5829 (page_index->page_len * pc); 5830 5831 switch (pc) { 5832 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 5833 /* 5834 * We don't update the changable bits for this page. 5835 */ 5836 break; 5837 case SMS_PAGE_CTRL_CURRENT >> 6: 5838 case SMS_PAGE_CTRL_DEFAULT >> 6: 5839 case SMS_PAGE_CTRL_SAVED >> 6: 5840#ifdef NEEDTOPORT 5841 ctl_update_power_subpage(page); 5842#endif 5843 break; 5844 default: 5845#ifdef NEEDTOPORT 5846 EPRINT(0, "Invalid PC %d!!", pc); 5847#endif 5848 break; 5849 } 5850 return (0); 5851} 5852 5853 5854int 5855ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 5856 struct ctl_page_index *page_index, uint8_t *page_ptr) 5857{ 5858 struct copan_aps_subpage *user_sp; 5859 struct copan_aps_subpage *current_sp; 5860 union ctl_modepage_info *modepage_info; 5861 struct ctl_softc *softc; 5862 struct ctl_lun *lun; 5863 int retval; 5864 5865 retval = CTL_RETVAL_COMPLETE; 5866 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 5867 (page_index->page_len * CTL_PAGE_CURRENT)); 5868 softc = control_softc; 5869 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5870 5871 user_sp = (struct copan_aps_subpage *)page_ptr; 5872 5873 modepage_info = (union ctl_modepage_info *) 5874 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 5875 5876 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 5877 modepage_info->header.subpage = page_index->subpage; 5878 modepage_info->aps.lock_active = user_sp->lock_active; 5879 5880 mtx_lock(&softc->ctl_lock); 5881 5882 /* 5883 * If there is a request to lock the LUN and another LUN is locked 5884 * this is an error. If the requested LUN is already locked ignore 5885 * the request. If no LUN is locked attempt to lock it. 5886 * if there is a request to unlock the LUN and the LUN is currently 5887 * locked attempt to unlock it. Otherwise ignore the request. i.e. 5888 * if another LUN is locked or no LUN is locked. 5889 */ 5890 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 5891 if (softc->aps_locked_lun == lun->lun) { 5892 /* 5893 * This LUN is already locked, so we're done. 5894 */ 5895 retval = CTL_RETVAL_COMPLETE; 5896 } else if (softc->aps_locked_lun == 0) { 5897 /* 5898 * No one has the lock, pass the request to the 5899 * backend. 5900 */ 5901 retval = lun->backend->config_write( 5902 (union ctl_io *)ctsio); 5903 } else { 5904 /* 5905 * Someone else has the lock, throw out the request. 5906 */ 5907 ctl_set_already_locked(ctsio); 5908 free(ctsio->kern_data_ptr, M_CTL); 5909 ctl_done((union ctl_io *)ctsio); 5910 5911 /* 5912 * Set the return value so that ctl_do_mode_select() 5913 * won't try to complete the command. We already 5914 * completed it here. 5915 */ 5916 retval = CTL_RETVAL_ERROR; 5917 } 5918 } else if (softc->aps_locked_lun == lun->lun) { 5919 /* 5920 * This LUN is locked, so pass the unlock request to the 5921 * backend. 5922 */ 5923 retval = lun->backend->config_write((union ctl_io *)ctsio); 5924 } 5925 mtx_unlock(&softc->ctl_lock); 5926 5927 return (retval); 5928} 5929 5930int 5931ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 5932 struct ctl_page_index *page_index, 5933 uint8_t *page_ptr) 5934{ 5935 uint8_t *c; 5936 int i; 5937 5938 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 5939 ctl_time_io_secs = 5940 (c[0] << 8) | 5941 (c[1] << 0) | 5942 0; 5943 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 5944 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 5945 printf("page data:"); 5946 for (i=0; i<8; i++) 5947 printf(" %.2x",page_ptr[i]); 5948 printf("\n"); 5949 return (0); 5950} 5951 5952int 5953ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 5954 struct ctl_page_index *page_index, 5955 int pc) 5956{ 5957 struct copan_debugconf_subpage *page; 5958 5959 page = (struct copan_debugconf_subpage *)page_index->page_data + 5960 (page_index->page_len * pc); 5961 5962 switch (pc) { 5963 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 5964 case SMS_PAGE_CTRL_DEFAULT >> 6: 5965 case SMS_PAGE_CTRL_SAVED >> 6: 5966 /* 5967 * We don't update the changable or default bits for this page. 5968 */ 5969 break; 5970 case SMS_PAGE_CTRL_CURRENT >> 6: 5971 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 5972 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 5973 break; 5974 default: 5975#ifdef NEEDTOPORT 5976 EPRINT(0, "Invalid PC %d!!", pc); 5977#endif /* NEEDTOPORT */ 5978 break; 5979 } 5980 return (0); 5981} 5982 5983 5984static int 5985ctl_do_mode_select(union ctl_io *io) 5986{ 5987 struct scsi_mode_page_header *page_header; 5988 struct ctl_page_index *page_index; 5989 struct ctl_scsiio *ctsio; 5990 int control_dev, page_len; 5991 int page_len_offset, page_len_size; 5992 union ctl_modepage_info *modepage_info; 5993 struct ctl_lun *lun; 5994 int *len_left, *len_used; 5995 int retval, i; 5996 5997 ctsio = &io->scsiio; 5998 page_index = NULL; 5999 page_len = 0; 6000 retval = CTL_RETVAL_COMPLETE; 6001 6002 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6003 6004 if (lun->be_lun->lun_type != T_DIRECT) 6005 control_dev = 1; 6006 else 6007 control_dev = 0; 6008 6009 modepage_info = (union ctl_modepage_info *) 6010 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6011 len_left = &modepage_info->header.len_left; 6012 len_used = &modepage_info->header.len_used; 6013 6014do_next_page: 6015 6016 page_header = (struct scsi_mode_page_header *) 6017 (ctsio->kern_data_ptr + *len_used); 6018 6019 if (*len_left == 0) { 6020 free(ctsio->kern_data_ptr, M_CTL); 6021 ctl_set_success(ctsio); 6022 ctl_done((union ctl_io *)ctsio); 6023 return (CTL_RETVAL_COMPLETE); 6024 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6025 6026 free(ctsio->kern_data_ptr, M_CTL); 6027 ctl_set_param_len_error(ctsio); 6028 ctl_done((union ctl_io *)ctsio); 6029 return (CTL_RETVAL_COMPLETE); 6030 6031 } else if ((page_header->page_code & SMPH_SPF) 6032 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6033 6034 free(ctsio->kern_data_ptr, M_CTL); 6035 ctl_set_param_len_error(ctsio); 6036 ctl_done((union ctl_io *)ctsio); 6037 return (CTL_RETVAL_COMPLETE); 6038 } 6039 6040 6041 /* 6042 * XXX KDM should we do something with the block descriptor? 6043 */ 6044 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6045 6046 if ((control_dev != 0) 6047 && (lun->mode_pages.index[i].page_flags & 6048 CTL_PAGE_FLAG_DISK_ONLY)) 6049 continue; 6050 6051 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6052 (page_header->page_code & SMPH_PC_MASK)) 6053 continue; 6054 6055 /* 6056 * If neither page has a subpage code, then we've got a 6057 * match. 6058 */ 6059 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6060 && ((page_header->page_code & SMPH_SPF) == 0)) { 6061 page_index = &lun->mode_pages.index[i]; 6062 page_len = page_header->page_length; 6063 break; 6064 } 6065 6066 /* 6067 * If both pages have subpages, then the subpage numbers 6068 * have to match. 6069 */ 6070 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6071 && (page_header->page_code & SMPH_SPF)) { 6072 struct scsi_mode_page_header_sp *sph; 6073 6074 sph = (struct scsi_mode_page_header_sp *)page_header; 6075 6076 if (lun->mode_pages.index[i].subpage == 6077 sph->subpage) { 6078 page_index = &lun->mode_pages.index[i]; 6079 page_len = scsi_2btoul(sph->page_length); 6080 break; 6081 } 6082 } 6083 } 6084 6085 /* 6086 * If we couldn't find the page, or if we don't have a mode select 6087 * handler for it, send back an error to the user. 6088 */ 6089 if ((page_index == NULL) 6090 || (page_index->select_handler == NULL)) { 6091 ctl_set_invalid_field(ctsio, 6092 /*sks_valid*/ 1, 6093 /*command*/ 0, 6094 /*field*/ *len_used, 6095 /*bit_valid*/ 0, 6096 /*bit*/ 0); 6097 free(ctsio->kern_data_ptr, M_CTL); 6098 ctl_done((union ctl_io *)ctsio); 6099 return (CTL_RETVAL_COMPLETE); 6100 } 6101 6102 if (page_index->page_code & SMPH_SPF) { 6103 page_len_offset = 2; 6104 page_len_size = 2; 6105 } else { 6106 page_len_size = 1; 6107 page_len_offset = 1; 6108 } 6109 6110 /* 6111 * If the length the initiator gives us isn't the one we specify in 6112 * the mode page header, or if they didn't specify enough data in 6113 * the CDB to avoid truncating this page, kick out the request. 6114 */ 6115 if ((page_len != (page_index->page_len - page_len_offset - 6116 page_len_size)) 6117 || (*len_left < page_index->page_len)) { 6118 6119 6120 ctl_set_invalid_field(ctsio, 6121 /*sks_valid*/ 1, 6122 /*command*/ 0, 6123 /*field*/ *len_used + page_len_offset, 6124 /*bit_valid*/ 0, 6125 /*bit*/ 0); 6126 free(ctsio->kern_data_ptr, M_CTL); 6127 ctl_done((union ctl_io *)ctsio); 6128 return (CTL_RETVAL_COMPLETE); 6129 } 6130 6131 /* 6132 * Run through the mode page, checking to make sure that the bits 6133 * the user changed are actually legal for him to change. 6134 */ 6135 for (i = 0; i < page_index->page_len; i++) { 6136 uint8_t *user_byte, *change_mask, *current_byte; 6137 int bad_bit; 6138 int j; 6139 6140 user_byte = (uint8_t *)page_header + i; 6141 change_mask = page_index->page_data + 6142 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6143 current_byte = page_index->page_data + 6144 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6145 6146 /* 6147 * Check to see whether the user set any bits in this byte 6148 * that he is not allowed to set. 6149 */ 6150 if ((*user_byte & ~(*change_mask)) == 6151 (*current_byte & ~(*change_mask))) 6152 continue; 6153 6154 /* 6155 * Go through bit by bit to determine which one is illegal. 6156 */ 6157 bad_bit = 0; 6158 for (j = 7; j >= 0; j--) { 6159 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6160 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6161 bad_bit = i; 6162 break; 6163 } 6164 } 6165 ctl_set_invalid_field(ctsio, 6166 /*sks_valid*/ 1, 6167 /*command*/ 0, 6168 /*field*/ *len_used + i, 6169 /*bit_valid*/ 1, 6170 /*bit*/ bad_bit); 6171 free(ctsio->kern_data_ptr, M_CTL); 6172 ctl_done((union ctl_io *)ctsio); 6173 return (CTL_RETVAL_COMPLETE); 6174 } 6175 6176 /* 6177 * Decrement these before we call the page handler, since we may 6178 * end up getting called back one way or another before the handler 6179 * returns to this context. 6180 */ 6181 *len_left -= page_index->page_len; 6182 *len_used += page_index->page_len; 6183 6184 retval = page_index->select_handler(ctsio, page_index, 6185 (uint8_t *)page_header); 6186 6187 /* 6188 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6189 * wait until this queued command completes to finish processing 6190 * the mode page. If it returns anything other than 6191 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6192 * already set the sense information, freed the data pointer, and 6193 * completed the io for us. 6194 */ 6195 if (retval != CTL_RETVAL_COMPLETE) 6196 goto bailout_no_done; 6197 6198 /* 6199 * If the initiator sent us more than one page, parse the next one. 6200 */ 6201 if (*len_left > 0) 6202 goto do_next_page; 6203 6204 ctl_set_success(ctsio); 6205 free(ctsio->kern_data_ptr, M_CTL); 6206 ctl_done((union ctl_io *)ctsio); 6207 6208bailout_no_done: 6209 6210 return (CTL_RETVAL_COMPLETE); 6211 6212} 6213 6214int 6215ctl_mode_select(struct ctl_scsiio *ctsio) 6216{ 6217 int param_len, pf, sp; 6218 int header_size, bd_len; 6219 int len_left, len_used; 6220 struct ctl_page_index *page_index; 6221 struct ctl_lun *lun; 6222 int control_dev, page_len; 6223 union ctl_modepage_info *modepage_info; 6224 int retval; 6225 6226 pf = 0; 6227 sp = 0; 6228 page_len = 0; 6229 len_used = 0; 6230 len_left = 0; 6231 retval = 0; 6232 bd_len = 0; 6233 page_index = NULL; 6234 6235 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6236 6237 if (lun->be_lun->lun_type != T_DIRECT) 6238 control_dev = 1; 6239 else 6240 control_dev = 0; 6241 6242 switch (ctsio->cdb[0]) { 6243 case MODE_SELECT_6: { 6244 struct scsi_mode_select_6 *cdb; 6245 6246 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6247 6248 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6249 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6250 6251 param_len = cdb->length; 6252 header_size = sizeof(struct scsi_mode_header_6); 6253 break; 6254 } 6255 case MODE_SELECT_10: { 6256 struct scsi_mode_select_10 *cdb; 6257 6258 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6259 6260 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6261 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6262 6263 param_len = scsi_2btoul(cdb->length); 6264 header_size = sizeof(struct scsi_mode_header_10); 6265 break; 6266 } 6267 default: 6268 ctl_set_invalid_opcode(ctsio); 6269 ctl_done((union ctl_io *)ctsio); 6270 return (CTL_RETVAL_COMPLETE); 6271 break; /* NOTREACHED */ 6272 } 6273 6274 /* 6275 * From SPC-3: 6276 * "A parameter list length of zero indicates that the Data-Out Buffer 6277 * shall be empty. This condition shall not be considered as an error." 6278 */ 6279 if (param_len == 0) { 6280 ctl_set_success(ctsio); 6281 ctl_done((union ctl_io *)ctsio); 6282 return (CTL_RETVAL_COMPLETE); 6283 } 6284 6285 /* 6286 * Since we'll hit this the first time through, prior to 6287 * allocation, we don't need to free a data buffer here. 6288 */ 6289 if (param_len < header_size) { 6290 ctl_set_param_len_error(ctsio); 6291 ctl_done((union ctl_io *)ctsio); 6292 return (CTL_RETVAL_COMPLETE); 6293 } 6294 6295 /* 6296 * Allocate the data buffer and grab the user's data. In theory, 6297 * we shouldn't have to sanity check the parameter list length here 6298 * because the maximum size is 64K. We should be able to malloc 6299 * that much without too many problems. 6300 */ 6301 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6302 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6303 if (ctsio->kern_data_ptr == NULL) { 6304 ctl_set_busy(ctsio); 6305 ctl_done((union ctl_io *)ctsio); 6306 return (CTL_RETVAL_COMPLETE); 6307 } 6308 ctsio->kern_data_len = param_len; 6309 ctsio->kern_total_len = param_len; 6310 ctsio->kern_data_resid = 0; 6311 ctsio->kern_rel_offset = 0; 6312 ctsio->kern_sg_entries = 0; 6313 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6314 ctsio->be_move_done = ctl_config_move_done; 6315 ctl_datamove((union ctl_io *)ctsio); 6316 6317 return (CTL_RETVAL_COMPLETE); 6318 } 6319 6320 switch (ctsio->cdb[0]) { 6321 case MODE_SELECT_6: { 6322 struct scsi_mode_header_6 *mh6; 6323 6324 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6325 bd_len = mh6->blk_desc_len; 6326 break; 6327 } 6328 case MODE_SELECT_10: { 6329 struct scsi_mode_header_10 *mh10; 6330 6331 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6332 bd_len = scsi_2btoul(mh10->blk_desc_len); 6333 break; 6334 } 6335 default: 6336 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6337 break; 6338 } 6339 6340 if (param_len < (header_size + bd_len)) { 6341 free(ctsio->kern_data_ptr, M_CTL); 6342 ctl_set_param_len_error(ctsio); 6343 ctl_done((union ctl_io *)ctsio); 6344 return (CTL_RETVAL_COMPLETE); 6345 } 6346 6347 /* 6348 * Set the IO_CONT flag, so that if this I/O gets passed to 6349 * ctl_config_write_done(), it'll get passed back to 6350 * ctl_do_mode_select() for further processing, or completion if 6351 * we're all done. 6352 */ 6353 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6354 ctsio->io_cont = ctl_do_mode_select; 6355 6356 modepage_info = (union ctl_modepage_info *) 6357 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6358 6359 memset(modepage_info, 0, sizeof(*modepage_info)); 6360 6361 len_left = param_len - header_size - bd_len; 6362 len_used = header_size + bd_len; 6363 6364 modepage_info->header.len_left = len_left; 6365 modepage_info->header.len_used = len_used; 6366 6367 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6368} 6369 6370int 6371ctl_mode_sense(struct ctl_scsiio *ctsio) 6372{ 6373 struct ctl_lun *lun; 6374 int pc, page_code, dbd, llba, subpage; 6375 int alloc_len, page_len, header_len, total_len; 6376 struct scsi_mode_block_descr *block_desc; 6377 struct ctl_page_index *page_index; 6378 int control_dev; 6379 6380 dbd = 0; 6381 llba = 0; 6382 block_desc = NULL; 6383 page_index = NULL; 6384 6385 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6386 6387 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6388 6389 if (lun->be_lun->lun_type != T_DIRECT) 6390 control_dev = 1; 6391 else 6392 control_dev = 0; 6393 6394 switch (ctsio->cdb[0]) { 6395 case MODE_SENSE_6: { 6396 struct scsi_mode_sense_6 *cdb; 6397 6398 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6399 6400 header_len = sizeof(struct scsi_mode_hdr_6); 6401 if (cdb->byte2 & SMS_DBD) 6402 dbd = 1; 6403 else 6404 header_len += sizeof(struct scsi_mode_block_descr); 6405 6406 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6407 page_code = cdb->page & SMS_PAGE_CODE; 6408 subpage = cdb->subpage; 6409 alloc_len = cdb->length; 6410 break; 6411 } 6412 case MODE_SENSE_10: { 6413 struct scsi_mode_sense_10 *cdb; 6414 6415 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6416 6417 header_len = sizeof(struct scsi_mode_hdr_10); 6418 6419 if (cdb->byte2 & SMS_DBD) 6420 dbd = 1; 6421 else 6422 header_len += sizeof(struct scsi_mode_block_descr); 6423 if (cdb->byte2 & SMS10_LLBAA) 6424 llba = 1; 6425 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6426 page_code = cdb->page & SMS_PAGE_CODE; 6427 subpage = cdb->subpage; 6428 alloc_len = scsi_2btoul(cdb->length); 6429 break; 6430 } 6431 default: 6432 ctl_set_invalid_opcode(ctsio); 6433 ctl_done((union ctl_io *)ctsio); 6434 return (CTL_RETVAL_COMPLETE); 6435 break; /* NOTREACHED */ 6436 } 6437 6438 /* 6439 * We have to make a first pass through to calculate the size of 6440 * the pages that match the user's query. Then we allocate enough 6441 * memory to hold it, and actually copy the data into the buffer. 6442 */ 6443 switch (page_code) { 6444 case SMS_ALL_PAGES_PAGE: { 6445 int i; 6446 6447 page_len = 0; 6448 6449 /* 6450 * At the moment, values other than 0 and 0xff here are 6451 * reserved according to SPC-3. 6452 */ 6453 if ((subpage != SMS_SUBPAGE_PAGE_0) 6454 && (subpage != SMS_SUBPAGE_ALL)) { 6455 ctl_set_invalid_field(ctsio, 6456 /*sks_valid*/ 1, 6457 /*command*/ 1, 6458 /*field*/ 3, 6459 /*bit_valid*/ 0, 6460 /*bit*/ 0); 6461 ctl_done((union ctl_io *)ctsio); 6462 return (CTL_RETVAL_COMPLETE); 6463 } 6464 6465 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6466 if ((control_dev != 0) 6467 && (lun->mode_pages.index[i].page_flags & 6468 CTL_PAGE_FLAG_DISK_ONLY)) 6469 continue; 6470 6471 /* 6472 * We don't use this subpage if the user didn't 6473 * request all subpages. 6474 */ 6475 if ((lun->mode_pages.index[i].subpage != 0) 6476 && (subpage == SMS_SUBPAGE_PAGE_0)) 6477 continue; 6478 6479#if 0 6480 printf("found page %#x len %d\n", 6481 lun->mode_pages.index[i].page_code & 6482 SMPH_PC_MASK, 6483 lun->mode_pages.index[i].page_len); 6484#endif 6485 page_len += lun->mode_pages.index[i].page_len; 6486 } 6487 break; 6488 } 6489 default: { 6490 int i; 6491 6492 page_len = 0; 6493 6494 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6495 /* Look for the right page code */ 6496 if ((lun->mode_pages.index[i].page_code & 6497 SMPH_PC_MASK) != page_code) 6498 continue; 6499 6500 /* Look for the right subpage or the subpage wildcard*/ 6501 if ((lun->mode_pages.index[i].subpage != subpage) 6502 && (subpage != SMS_SUBPAGE_ALL)) 6503 continue; 6504 6505 /* Make sure the page is supported for this dev type */ 6506 if ((control_dev != 0) 6507 && (lun->mode_pages.index[i].page_flags & 6508 CTL_PAGE_FLAG_DISK_ONLY)) 6509 continue; 6510 6511#if 0 6512 printf("found page %#x len %d\n", 6513 lun->mode_pages.index[i].page_code & 6514 SMPH_PC_MASK, 6515 lun->mode_pages.index[i].page_len); 6516#endif 6517 6518 page_len += lun->mode_pages.index[i].page_len; 6519 } 6520 6521 if (page_len == 0) { 6522 ctl_set_invalid_field(ctsio, 6523 /*sks_valid*/ 1, 6524 /*command*/ 1, 6525 /*field*/ 2, 6526 /*bit_valid*/ 1, 6527 /*bit*/ 5); 6528 ctl_done((union ctl_io *)ctsio); 6529 return (CTL_RETVAL_COMPLETE); 6530 } 6531 break; 6532 } 6533 } 6534 6535 total_len = header_len + page_len; 6536#if 0 6537 printf("header_len = %d, page_len = %d, total_len = %d\n", 6538 header_len, page_len, total_len); 6539#endif 6540 6541 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK); 6542 if (ctsio->kern_data_ptr == NULL) { 6543 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6544 ctsio->scsi_status = SCSI_STATUS_BUSY; 6545 ctl_done((union ctl_io *)ctsio); 6546 return (CTL_RETVAL_COMPLETE); 6547 } 6548 ctsio->kern_sg_entries = 0; 6549 ctsio->kern_data_resid = 0; 6550 ctsio->kern_rel_offset = 0; 6551 if (total_len < alloc_len) { 6552 ctsio->residual = alloc_len - total_len; 6553 ctsio->kern_data_len = total_len; 6554 ctsio->kern_total_len = total_len; 6555 } else { 6556 ctsio->residual = 0; 6557 ctsio->kern_data_len = alloc_len; 6558 ctsio->kern_total_len = alloc_len; 6559 } 6560 memset(ctsio->kern_data_ptr, 0, total_len); 6561 6562 switch (ctsio->cdb[0]) { 6563 case MODE_SENSE_6: { 6564 struct scsi_mode_hdr_6 *header; 6565 6566 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6567 6568 header->datalen = ctl_min(total_len - 1, 254); 6569 6570 if (dbd) 6571 header->block_descr_len = 0; 6572 else 6573 header->block_descr_len = 6574 sizeof(struct scsi_mode_block_descr); 6575 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6576 break; 6577 } 6578 case MODE_SENSE_10: { 6579 struct scsi_mode_hdr_10 *header; 6580 int datalen; 6581 6582 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6583 6584 datalen = ctl_min(total_len - 2, 65533); 6585 scsi_ulto2b(datalen, header->datalen); 6586 if (dbd) 6587 scsi_ulto2b(0, header->block_descr_len); 6588 else 6589 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6590 header->block_descr_len); 6591 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6592 break; 6593 } 6594 default: 6595 panic("invalid CDB type %#x", ctsio->cdb[0]); 6596 break; /* NOTREACHED */ 6597 } 6598 6599 /* 6600 * If we've got a disk, use its blocksize in the block 6601 * descriptor. Otherwise, just set it to 0. 6602 */ 6603 if (dbd == 0) { 6604 if (control_dev != 0) 6605 scsi_ulto3b(lun->be_lun->blocksize, 6606 block_desc->block_len); 6607 else 6608 scsi_ulto3b(0, block_desc->block_len); 6609 } 6610 6611 switch (page_code) { 6612 case SMS_ALL_PAGES_PAGE: { 6613 int i, data_used; 6614 6615 data_used = header_len; 6616 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6617 struct ctl_page_index *page_index; 6618 6619 page_index = &lun->mode_pages.index[i]; 6620 6621 if ((control_dev != 0) 6622 && (page_index->page_flags & 6623 CTL_PAGE_FLAG_DISK_ONLY)) 6624 continue; 6625 6626 /* 6627 * We don't use this subpage if the user didn't 6628 * request all subpages. We already checked (above) 6629 * to make sure the user only specified a subpage 6630 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6631 */ 6632 if ((page_index->subpage != 0) 6633 && (subpage == SMS_SUBPAGE_PAGE_0)) 6634 continue; 6635 6636 /* 6637 * Call the handler, if it exists, to update the 6638 * page to the latest values. 6639 */ 6640 if (page_index->sense_handler != NULL) 6641 page_index->sense_handler(ctsio, page_index,pc); 6642 6643 memcpy(ctsio->kern_data_ptr + data_used, 6644 page_index->page_data + 6645 (page_index->page_len * pc), 6646 page_index->page_len); 6647 data_used += page_index->page_len; 6648 } 6649 break; 6650 } 6651 default: { 6652 int i, data_used; 6653 6654 data_used = header_len; 6655 6656 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6657 struct ctl_page_index *page_index; 6658 6659 page_index = &lun->mode_pages.index[i]; 6660 6661 /* Look for the right page code */ 6662 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6663 continue; 6664 6665 /* Look for the right subpage or the subpage wildcard*/ 6666 if ((page_index->subpage != subpage) 6667 && (subpage != SMS_SUBPAGE_ALL)) 6668 continue; 6669 6670 /* Make sure the page is supported for this dev type */ 6671 if ((control_dev != 0) 6672 && (page_index->page_flags & 6673 CTL_PAGE_FLAG_DISK_ONLY)) 6674 continue; 6675 6676 /* 6677 * Call the handler, if it exists, to update the 6678 * page to the latest values. 6679 */ 6680 if (page_index->sense_handler != NULL) 6681 page_index->sense_handler(ctsio, page_index,pc); 6682 6683 memcpy(ctsio->kern_data_ptr + data_used, 6684 page_index->page_data + 6685 (page_index->page_len * pc), 6686 page_index->page_len); 6687 data_used += page_index->page_len; 6688 } 6689 break; 6690 } 6691 } 6692 6693 ctsio->scsi_status = SCSI_STATUS_OK; 6694 6695 ctsio->be_move_done = ctl_config_move_done; 6696 ctl_datamove((union ctl_io *)ctsio); 6697 6698 return (CTL_RETVAL_COMPLETE); 6699} 6700 6701int 6702ctl_read_capacity(struct ctl_scsiio *ctsio) 6703{ 6704 struct scsi_read_capacity *cdb; 6705 struct scsi_read_capacity_data *data; 6706 struct ctl_lun *lun; 6707 uint32_t lba; 6708 6709 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6710 6711 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6712 6713 lba = scsi_4btoul(cdb->addr); 6714 if (((cdb->pmi & SRC_PMI) == 0) 6715 && (lba != 0)) { 6716 ctl_set_invalid_field(/*ctsio*/ ctsio, 6717 /*sks_valid*/ 1, 6718 /*command*/ 1, 6719 /*field*/ 2, 6720 /*bit_valid*/ 0, 6721 /*bit*/ 0); 6722 ctl_done((union ctl_io *)ctsio); 6723 return (CTL_RETVAL_COMPLETE); 6724 } 6725 6726 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6727 6728 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK); 6729 if (ctsio->kern_data_ptr == NULL) { 6730 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6731 ctsio->scsi_status = SCSI_STATUS_BUSY; 6732 ctl_done((union ctl_io *)ctsio); 6733 return (CTL_RETVAL_COMPLETE); 6734 } 6735 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 6736 ctsio->residual = 0; 6737 ctsio->kern_data_len = sizeof(*data); 6738 ctsio->kern_total_len = sizeof(*data); 6739 ctsio->kern_data_resid = 0; 6740 ctsio->kern_rel_offset = 0; 6741 ctsio->kern_sg_entries = 0; 6742 6743 memset(data, 0, sizeof(*data)); 6744 6745 /* 6746 * If the maximum LBA is greater than 0xfffffffe, the user must 6747 * issue a SERVICE ACTION IN (16) command, with the read capacity 6748 * serivce action set. 6749 */ 6750 if (lun->be_lun->maxlba > 0xfffffffe) 6751 scsi_ulto4b(0xffffffff, data->addr); 6752 else 6753 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 6754 6755 /* 6756 * XXX KDM this may not be 512 bytes... 6757 */ 6758 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6759 6760 ctsio->scsi_status = SCSI_STATUS_OK; 6761 6762 ctsio->be_move_done = ctl_config_move_done; 6763 ctl_datamove((union ctl_io *)ctsio); 6764 6765 return (CTL_RETVAL_COMPLETE); 6766} 6767 6768static int 6769ctl_read_capacity_16(struct ctl_scsiio *ctsio) 6770{ 6771 struct scsi_read_capacity_16 *cdb; 6772 struct scsi_read_capacity_data_long *data; 6773 struct ctl_lun *lun; 6774 uint64_t lba; 6775 uint32_t alloc_len; 6776 6777 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 6778 6779 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 6780 6781 alloc_len = scsi_4btoul(cdb->alloc_len); 6782 lba = scsi_8btou64(cdb->addr); 6783 6784 if ((cdb->reladr & SRC16_PMI) 6785 && (lba != 0)) { 6786 ctl_set_invalid_field(/*ctsio*/ ctsio, 6787 /*sks_valid*/ 1, 6788 /*command*/ 1, 6789 /*field*/ 2, 6790 /*bit_valid*/ 0, 6791 /*bit*/ 0); 6792 ctl_done((union ctl_io *)ctsio); 6793 return (CTL_RETVAL_COMPLETE); 6794 } 6795 6796 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6797 6798 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK); 6799 if (ctsio->kern_data_ptr == NULL) { 6800 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6801 ctsio->scsi_status = SCSI_STATUS_BUSY; 6802 ctl_done((union ctl_io *)ctsio); 6803 return (CTL_RETVAL_COMPLETE); 6804 } 6805 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 6806 6807 if (sizeof(*data) < alloc_len) { 6808 ctsio->residual = alloc_len - sizeof(*data); 6809 ctsio->kern_data_len = sizeof(*data); 6810 ctsio->kern_total_len = sizeof(*data); 6811 } else { 6812 ctsio->residual = 0; 6813 ctsio->kern_data_len = alloc_len; 6814 ctsio->kern_total_len = alloc_len; 6815 } 6816 ctsio->kern_data_resid = 0; 6817 ctsio->kern_rel_offset = 0; 6818 ctsio->kern_sg_entries = 0; 6819 6820 memset(data, 0, sizeof(*data)); 6821 6822 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 6823 /* XXX KDM this may not be 512 bytes... */ 6824 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6825 6826 ctsio->scsi_status = SCSI_STATUS_OK; 6827 6828 ctsio->be_move_done = ctl_config_move_done; 6829 ctl_datamove((union ctl_io *)ctsio); 6830 6831 return (CTL_RETVAL_COMPLETE); 6832} 6833 6834int 6835ctl_service_action_in(struct ctl_scsiio *ctsio) 6836{ 6837 struct scsi_service_action_in *cdb; 6838 int retval; 6839 6840 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 6841 6842 cdb = (struct scsi_service_action_in *)ctsio->cdb; 6843 6844 retval = CTL_RETVAL_COMPLETE; 6845 6846 switch (cdb->service_action) { 6847 case SRC16_SERVICE_ACTION: 6848 retval = ctl_read_capacity_16(ctsio); 6849 break; 6850 default: 6851 ctl_set_invalid_field(/*ctsio*/ ctsio, 6852 /*sks_valid*/ 1, 6853 /*command*/ 1, 6854 /*field*/ 1, 6855 /*bit_valid*/ 1, 6856 /*bit*/ 4); 6857 ctl_done((union ctl_io *)ctsio); 6858 break; 6859 } 6860 6861 return (retval); 6862} 6863 6864int 6865ctl_maintenance_in(struct ctl_scsiio *ctsio) 6866{ 6867 struct scsi_maintenance_in *cdb; 6868 int retval; 6869 int alloc_len, total_len = 0; 6870 int num_target_port_groups; 6871 struct ctl_lun *lun; 6872 struct ctl_softc *softc; 6873 struct scsi_target_group_data *rtg_ptr; 6874 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 6875 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 6876 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 6877 6878 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 6879 6880 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 6881 softc = control_softc; 6882 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6883 6884 retval = CTL_RETVAL_COMPLETE; 6885 mtx_lock(&softc->ctl_lock); 6886 6887 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 6888 ctl_set_invalid_field(/*ctsio*/ ctsio, 6889 /*sks_valid*/ 1, 6890 /*command*/ 1, 6891 /*field*/ 1, 6892 /*bit_valid*/ 1, 6893 /*bit*/ 4); 6894 ctl_done((union ctl_io *)ctsio); 6895 return(retval); 6896 } 6897 6898 if (ctl_is_single) 6899 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 6900 else 6901 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 6902 6903 total_len = sizeof(struct scsi_target_group_data) + 6904 sizeof(struct scsi_target_port_group_descriptor) * 6905 num_target_port_groups + 6906 sizeof(struct scsi_target_port_descriptor) * 6907 NUM_PORTS_PER_GRP * num_target_port_groups; 6908 6909 alloc_len = scsi_4btoul(cdb->length); 6910 6911 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK); 6912 if (ctsio->kern_data_ptr == NULL) { 6913 ctsio->io_hdr.status = CTL_SCSI_ERROR; 6914 ctsio->scsi_status = SCSI_STATUS_BUSY; 6915 ctl_done((union ctl_io *)ctsio); 6916 return (CTL_RETVAL_COMPLETE); 6917 } 6918 memset(ctsio->kern_data_ptr, 0, total_len); 6919 6920 ctsio->kern_sg_entries = 0; 6921 6922 if (total_len < alloc_len) { 6923 ctsio->residual = alloc_len - total_len; 6924 ctsio->kern_data_len = total_len; 6925 ctsio->kern_total_len = total_len; 6926 } else { 6927 ctsio->residual = 0; 6928 ctsio->kern_data_len = alloc_len; 6929 ctsio->kern_total_len = alloc_len; 6930 } 6931 ctsio->kern_data_resid = 0; 6932 ctsio->kern_rel_offset = 0; 6933 6934 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 6935 6936 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 6937 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 6938 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 6939 &tp_desc_ptr1_1->desc_list[0]; 6940 6941 6942 6943 if (ctl_is_single == 0) { 6944 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 6945 &tp_desc_ptr1_2->desc_list[0]; 6946 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 6947 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 6948 &tp_desc_ptr2_1->desc_list[0]; 6949 } else { 6950 tpg_desc_ptr2 = NULL; 6951 tp_desc_ptr2_1 = NULL; 6952 tp_desc_ptr2_2 = NULL; 6953 } 6954 6955 scsi_ulto4b(total_len - 4, rtg_ptr->length); 6956 if (ctl_is_single == 0) { 6957 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 6958 if (lun->flags & CTL_LUN_PRIMARY_SC) { 6959 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 6960 tpg_desc_ptr2->pref_state = 6961 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 6962 } else { 6963 tpg_desc_ptr1->pref_state = 6964 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 6965 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 6966 } 6967 } else { 6968 if (lun->flags & CTL_LUN_PRIMARY_SC) { 6969 tpg_desc_ptr1->pref_state = 6970 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 6971 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 6972 } else { 6973 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 6974 tpg_desc_ptr2->pref_state = 6975 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 6976 } 6977 } 6978 } else { 6979 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 6980 } 6981 tpg_desc_ptr1->support = 0; 6982 tpg_desc_ptr1->target_port_group[1] = 1; 6983 tpg_desc_ptr1->status = TPG_IMPLICIT; 6984 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 6985 6986 if (ctl_is_single == 0) { 6987 tpg_desc_ptr2->support = 0; 6988 tpg_desc_ptr2->target_port_group[1] = 2; 6989 tpg_desc_ptr2->status = TPG_IMPLICIT; 6990 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 6991 6992 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 6993 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 6994 6995 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 6996 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 6997 } else { 6998 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 6999 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7000 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7001 } else { 7002 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7003 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7004 } 7005 } 7006 7007 mtx_unlock(&softc->ctl_lock); 7008 7009 ctsio->be_move_done = ctl_config_move_done; 7010 7011 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7012 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7013 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7014 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7015 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7016 7017 ctl_datamove((union ctl_io *)ctsio); 7018 return(retval); 7019} 7020 7021int 7022ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7023{ 7024 struct scsi_per_res_in *cdb; 7025 int alloc_len, total_len = 0; 7026 /* struct scsi_per_res_in_rsrv in_data; */ 7027 struct ctl_lun *lun; 7028 struct ctl_softc *softc; 7029 7030 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7031 7032 softc = control_softc; 7033 7034 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7035 7036 alloc_len = scsi_2btoul(cdb->length); 7037 7038 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7039 7040retry: 7041 mtx_lock(&softc->ctl_lock); 7042 switch (cdb->action) { 7043 case SPRI_RK: /* read keys */ 7044 total_len = sizeof(struct scsi_per_res_in_keys) + 7045 lun->pr_key_count * 7046 sizeof(struct scsi_per_res_key); 7047 break; 7048 case SPRI_RR: /* read reservation */ 7049 if (lun->flags & CTL_LUN_PR_RESERVED) 7050 total_len = sizeof(struct scsi_per_res_in_rsrv); 7051 else 7052 total_len = sizeof(struct scsi_per_res_in_header); 7053 break; 7054 case SPRI_RC: /* report capabilities */ 7055 total_len = sizeof(struct scsi_per_res_cap); 7056 break; 7057 case SPRI_RS: /* read full status */ 7058 default: 7059 mtx_unlock(&softc->ctl_lock); 7060 ctl_set_invalid_field(ctsio, 7061 /*sks_valid*/ 1, 7062 /*command*/ 1, 7063 /*field*/ 1, 7064 /*bit_valid*/ 1, 7065 /*bit*/ 0); 7066 ctl_done((union ctl_io *)ctsio); 7067 return (CTL_RETVAL_COMPLETE); 7068 break; /* NOTREACHED */ 7069 } 7070 mtx_unlock(&softc->ctl_lock); 7071 7072 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK); 7073 if (ctsio->kern_data_ptr == NULL) { 7074 ctsio->io_hdr.status = CTL_SCSI_ERROR; 7075 ctsio->scsi_status = SCSI_STATUS_BUSY; 7076 ctl_done((union ctl_io *)ctsio); 7077 return (CTL_RETVAL_COMPLETE); 7078 } 7079 7080 if (total_len < alloc_len) { 7081 ctsio->residual = alloc_len - total_len; 7082 ctsio->kern_data_len = total_len; 7083 ctsio->kern_total_len = total_len; 7084 } else { 7085 ctsio->residual = 0; 7086 ctsio->kern_data_len = alloc_len; 7087 ctsio->kern_total_len = alloc_len; 7088 } 7089 7090 ctsio->kern_data_resid = 0; 7091 ctsio->kern_rel_offset = 0; 7092 ctsio->kern_sg_entries = 0; 7093 7094 memset(ctsio->kern_data_ptr, 0, total_len); 7095 7096 mtx_lock(&softc->ctl_lock); 7097 switch (cdb->action) { 7098 case SPRI_RK: { // read keys 7099 struct scsi_per_res_in_keys *res_keys; 7100 int i, key_count; 7101 7102 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7103 7104 /* 7105 * We had to drop the lock to allocate our buffer, which 7106 * leaves time for someone to come in with another 7107 * persistent reservation. (That is unlikely, though, 7108 * since this should be the only persistent reservation 7109 * command active right now.) 7110 */ 7111 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7112 (lun->pr_key_count * 7113 sizeof(struct scsi_per_res_key)))){ 7114 mtx_unlock(&softc->ctl_lock); 7115 free(ctsio->kern_data_ptr, M_CTL); 7116 printf("%s: reservation length changed, retrying\n", 7117 __func__); 7118 goto retry; 7119 } 7120 7121 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7122 7123 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7124 lun->pr_key_count, res_keys->header.length); 7125 7126 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7127 if (!lun->per_res[i].registered) 7128 continue; 7129 7130 /* 7131 * We used lun->pr_key_count to calculate the 7132 * size to allocate. If it turns out the number of 7133 * initiators with the registered flag set is 7134 * larger than that (i.e. they haven't been kept in 7135 * sync), we've got a problem. 7136 */ 7137 if (key_count >= lun->pr_key_count) { 7138#ifdef NEEDTOPORT 7139 csevent_log(CSC_CTL | CSC_SHELF_SW | 7140 CTL_PR_ERROR, 7141 csevent_LogType_Fault, 7142 csevent_AlertLevel_Yellow, 7143 csevent_FRU_ShelfController, 7144 csevent_FRU_Firmware, 7145 csevent_FRU_Unknown, 7146 "registered keys %d >= key " 7147 "count %d", key_count, 7148 lun->pr_key_count); 7149#endif 7150 key_count++; 7151 continue; 7152 } 7153 memcpy(res_keys->keys[key_count].key, 7154 lun->per_res[i].res_key.key, 7155 ctl_min(sizeof(res_keys->keys[key_count].key), 7156 sizeof(lun->per_res[i].res_key))); 7157 key_count++; 7158 } 7159 break; 7160 } 7161 case SPRI_RR: { // read reservation 7162 struct scsi_per_res_in_rsrv *res; 7163 int tmp_len, header_only; 7164 7165 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7166 7167 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7168 7169 if (lun->flags & CTL_LUN_PR_RESERVED) 7170 { 7171 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7172 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7173 res->header.length); 7174 header_only = 0; 7175 } else { 7176 tmp_len = sizeof(struct scsi_per_res_in_header); 7177 scsi_ulto4b(0, res->header.length); 7178 header_only = 1; 7179 } 7180 7181 /* 7182 * We had to drop the lock to allocate our buffer, which 7183 * leaves time for someone to come in with another 7184 * persistent reservation. (That is unlikely, though, 7185 * since this should be the only persistent reservation 7186 * command active right now.) 7187 */ 7188 if (tmp_len != total_len) { 7189 mtx_unlock(&softc->ctl_lock); 7190 free(ctsio->kern_data_ptr, M_CTL); 7191 printf("%s: reservation status changed, retrying\n", 7192 __func__); 7193 goto retry; 7194 } 7195 7196 /* 7197 * No reservation held, so we're done. 7198 */ 7199 if (header_only != 0) 7200 break; 7201 7202 /* 7203 * If the registration is an All Registrants type, the key 7204 * is 0, since it doesn't really matter. 7205 */ 7206 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7207 memcpy(res->data.reservation, 7208 &lun->per_res[lun->pr_res_idx].res_key, 7209 sizeof(struct scsi_per_res_key)); 7210 } 7211 res->data.scopetype = lun->res_type; 7212 break; 7213 } 7214 case SPRI_RC: //report capabilities 7215 { 7216 struct scsi_per_res_cap *res_cap; 7217 uint16_t type_mask; 7218 7219 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7220 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7221 res_cap->flags2 |= SPRI_TMV; 7222 type_mask = SPRI_TM_WR_EX_AR | 7223 SPRI_TM_EX_AC_RO | 7224 SPRI_TM_WR_EX_RO | 7225 SPRI_TM_EX_AC | 7226 SPRI_TM_WR_EX | 7227 SPRI_TM_EX_AC_AR; 7228 scsi_ulto2b(type_mask, res_cap->type_mask); 7229 break; 7230 } 7231 case SPRI_RS: //read full status 7232 default: 7233 /* 7234 * This is a bug, because we just checked for this above, 7235 * and should have returned an error. 7236 */ 7237 panic("Invalid PR type %x", cdb->action); 7238 break; /* NOTREACHED */ 7239 } 7240 mtx_unlock(&softc->ctl_lock); 7241 7242 ctsio->be_move_done = ctl_config_move_done; 7243 7244 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7245 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7246 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7247 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7248 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7249 7250 ctl_datamove((union ctl_io *)ctsio); 7251 7252 return (CTL_RETVAL_COMPLETE); 7253} 7254 7255/* 7256 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7257 * it should return. 7258 */ 7259static int 7260ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7261 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7262 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7263 struct scsi_per_res_out_parms* param) 7264{ 7265 union ctl_ha_msg persis_io; 7266 int retval, i; 7267 int isc_retval; 7268 7269 retval = 0; 7270 7271 if (sa_res_key == 0) { 7272 mtx_lock(&softc->ctl_lock); 7273 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7274 /* validate scope and type */ 7275 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7276 SPR_LU_SCOPE) { 7277 mtx_unlock(&softc->ctl_lock); 7278 ctl_set_invalid_field(/*ctsio*/ ctsio, 7279 /*sks_valid*/ 1, 7280 /*command*/ 1, 7281 /*field*/ 2, 7282 /*bit_valid*/ 1, 7283 /*bit*/ 4); 7284 ctl_done((union ctl_io *)ctsio); 7285 return (1); 7286 } 7287 7288 if (type>8 || type==2 || type==4 || type==0) { 7289 mtx_unlock(&softc->ctl_lock); 7290 ctl_set_invalid_field(/*ctsio*/ ctsio, 7291 /*sks_valid*/ 1, 7292 /*command*/ 1, 7293 /*field*/ 2, 7294 /*bit_valid*/ 1, 7295 /*bit*/ 0); 7296 ctl_done((union ctl_io *)ctsio); 7297 return (1); 7298 } 7299 7300 /* temporarily unregister this nexus */ 7301 lun->per_res[residx].registered = 0; 7302 7303 /* 7304 * Unregister everybody else and build UA for 7305 * them 7306 */ 7307 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7308 if (lun->per_res[i].registered == 0) 7309 continue; 7310 7311 if (!persis_offset 7312 && i <CTL_MAX_INITIATORS) 7313 lun->pending_sense[i].ua_pending |= 7314 CTL_UA_REG_PREEMPT; 7315 else if (persis_offset 7316 && i >= persis_offset) 7317 lun->pending_sense[i-persis_offset 7318 ].ua_pending |= 7319 CTL_UA_REG_PREEMPT; 7320 lun->per_res[i].registered = 0; 7321 memset(&lun->per_res[i].res_key, 0, 7322 sizeof(struct scsi_per_res_key)); 7323 } 7324 lun->per_res[residx].registered = 1; 7325 lun->pr_key_count = 1; 7326 lun->res_type = type; 7327 if (lun->res_type != SPR_TYPE_WR_EX_AR 7328 && lun->res_type != SPR_TYPE_EX_AC_AR) 7329 lun->pr_res_idx = residx; 7330 7331 mtx_unlock(&softc->ctl_lock); 7332 /* send msg to other side */ 7333 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7334 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7335 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7336 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7337 persis_io.pr.pr_info.res_type = type; 7338 memcpy(persis_io.pr.pr_info.sa_res_key, 7339 param->serv_act_res_key, 7340 sizeof(param->serv_act_res_key)); 7341 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7342 &persis_io, sizeof(persis_io), 0)) > 7343 CTL_HA_STATUS_SUCCESS) { 7344 printf("CTL:Persis Out error returned " 7345 "from ctl_ha_msg_send %d\n", 7346 isc_retval); 7347 } 7348 } else { 7349 /* not all registrants */ 7350 mtx_unlock(&softc->ctl_lock); 7351 free(ctsio->kern_data_ptr, M_CTL); 7352 ctl_set_invalid_field(ctsio, 7353 /*sks_valid*/ 1, 7354 /*command*/ 0, 7355 /*field*/ 8, 7356 /*bit_valid*/ 0, 7357 /*bit*/ 0); 7358 ctl_done((union ctl_io *)ctsio); 7359 return (1); 7360 } 7361 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7362 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7363 int found = 0; 7364 7365 mtx_lock(&softc->ctl_lock); 7366 if (res_key == sa_res_key) { 7367 /* special case */ 7368 /* 7369 * The spec implies this is not good but doesn't 7370 * say what to do. There are two choices either 7371 * generate a res conflict or check condition 7372 * with illegal field in parameter data. Since 7373 * that is what is done when the sa_res_key is 7374 * zero I'll take that approach since this has 7375 * to do with the sa_res_key. 7376 */ 7377 mtx_unlock(&softc->ctl_lock); 7378 free(ctsio->kern_data_ptr, M_CTL); 7379 ctl_set_invalid_field(ctsio, 7380 /*sks_valid*/ 1, 7381 /*command*/ 0, 7382 /*field*/ 8, 7383 /*bit_valid*/ 0, 7384 /*bit*/ 0); 7385 ctl_done((union ctl_io *)ctsio); 7386 return (1); 7387 } 7388 7389 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7390 if (lun->per_res[i].registered 7391 && memcmp(param->serv_act_res_key, 7392 lun->per_res[i].res_key.key, 7393 sizeof(struct scsi_per_res_key)) != 0) 7394 continue; 7395 7396 found = 1; 7397 lun->per_res[i].registered = 0; 7398 memset(&lun->per_res[i].res_key, 0, 7399 sizeof(struct scsi_per_res_key)); 7400 lun->pr_key_count--; 7401 7402 if (!persis_offset 7403 && i < CTL_MAX_INITIATORS) 7404 lun->pending_sense[i].ua_pending |= 7405 CTL_UA_REG_PREEMPT; 7406 else if (persis_offset 7407 && i >= persis_offset) 7408 lun->pending_sense[i-persis_offset].ua_pending|= 7409 CTL_UA_REG_PREEMPT; 7410 } 7411 mtx_unlock(&softc->ctl_lock); 7412 if (!found) { 7413 free(ctsio->kern_data_ptr, M_CTL); 7414 ctl_set_reservation_conflict(ctsio); 7415 ctl_done((union ctl_io *)ctsio); 7416 return (CTL_RETVAL_COMPLETE); 7417 } 7418 /* send msg to other side */ 7419 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7420 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7421 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7422 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7423 persis_io.pr.pr_info.res_type = type; 7424 memcpy(persis_io.pr.pr_info.sa_res_key, 7425 param->serv_act_res_key, 7426 sizeof(param->serv_act_res_key)); 7427 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7428 &persis_io, sizeof(persis_io), 0)) > 7429 CTL_HA_STATUS_SUCCESS) { 7430 printf("CTL:Persis Out error returned from " 7431 "ctl_ha_msg_send %d\n", isc_retval); 7432 } 7433 } else { 7434 /* Reserved but not all registrants */ 7435 /* sa_res_key is res holder */ 7436 if (memcmp(param->serv_act_res_key, 7437 lun->per_res[lun->pr_res_idx].res_key.key, 7438 sizeof(struct scsi_per_res_key)) == 0) { 7439 /* validate scope and type */ 7440 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7441 SPR_LU_SCOPE) { 7442 ctl_set_invalid_field(/*ctsio*/ ctsio, 7443 /*sks_valid*/ 1, 7444 /*command*/ 1, 7445 /*field*/ 2, 7446 /*bit_valid*/ 1, 7447 /*bit*/ 4); 7448 ctl_done((union ctl_io *)ctsio); 7449 return (1); 7450 } 7451 7452 if (type>8 || type==2 || type==4 || type==0) { 7453 ctl_set_invalid_field(/*ctsio*/ ctsio, 7454 /*sks_valid*/ 1, 7455 /*command*/ 1, 7456 /*field*/ 2, 7457 /*bit_valid*/ 1, 7458 /*bit*/ 0); 7459 ctl_done((union ctl_io *)ctsio); 7460 return (1); 7461 } 7462 7463 /* 7464 * Do the following: 7465 * if sa_res_key != res_key remove all 7466 * registrants w/sa_res_key and generate UA 7467 * for these registrants(Registrations 7468 * Preempted) if it wasn't an exclusive 7469 * reservation generate UA(Reservations 7470 * Preempted) for all other registered nexuses 7471 * if the type has changed. Establish the new 7472 * reservation and holder. If res_key and 7473 * sa_res_key are the same do the above 7474 * except don't unregister the res holder. 7475 */ 7476 7477 /* 7478 * Temporarily unregister so it won't get 7479 * removed or UA generated 7480 */ 7481 lun->per_res[residx].registered = 0; 7482 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7483 if (lun->per_res[i].registered == 0) 7484 continue; 7485 7486 if (memcmp(param->serv_act_res_key, 7487 lun->per_res[i].res_key.key, 7488 sizeof(struct scsi_per_res_key)) == 0) { 7489 lun->per_res[i].registered = 0; 7490 memset(&lun->per_res[i].res_key, 7491 0, 7492 sizeof(struct scsi_per_res_key)); 7493 lun->pr_key_count--; 7494 7495 if (!persis_offset 7496 && i < CTL_MAX_INITIATORS) 7497 lun->pending_sense[i 7498 ].ua_pending |= 7499 CTL_UA_REG_PREEMPT; 7500 else if (persis_offset 7501 && i >= persis_offset) 7502 lun->pending_sense[ 7503 i-persis_offset].ua_pending |= 7504 CTL_UA_REG_PREEMPT; 7505 } else if (type != lun->res_type 7506 && (lun->res_type == SPR_TYPE_WR_EX_RO 7507 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7508 if (!persis_offset 7509 && i < CTL_MAX_INITIATORS) 7510 lun->pending_sense[i 7511 ].ua_pending |= 7512 CTL_UA_RES_RELEASE; 7513 else if (persis_offset 7514 && i >= persis_offset) 7515 lun->pending_sense[ 7516 i-persis_offset 7517 ].ua_pending |= 7518 CTL_UA_RES_RELEASE; 7519 } 7520 } 7521 lun->per_res[residx].registered = 1; 7522 lun->res_type = type; 7523 if (lun->res_type != SPR_TYPE_WR_EX_AR 7524 && lun->res_type != SPR_TYPE_EX_AC_AR) 7525 lun->pr_res_idx = residx; 7526 else 7527 lun->pr_res_idx = 7528 CTL_PR_ALL_REGISTRANTS; 7529 7530 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7531 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7532 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7533 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7534 persis_io.pr.pr_info.res_type = type; 7535 memcpy(persis_io.pr.pr_info.sa_res_key, 7536 param->serv_act_res_key, 7537 sizeof(param->serv_act_res_key)); 7538 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7539 &persis_io, sizeof(persis_io), 0)) > 7540 CTL_HA_STATUS_SUCCESS) { 7541 printf("CTL:Persis Out error returned " 7542 "from ctl_ha_msg_send %d\n", 7543 isc_retval); 7544 } 7545 } else { 7546 /* 7547 * sa_res_key is not the res holder just 7548 * remove registrants 7549 */ 7550 int found=0; 7551 mtx_lock(&softc->ctl_lock); 7552 7553 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7554 if (memcmp(param->serv_act_res_key, 7555 lun->per_res[i].res_key.key, 7556 sizeof(struct scsi_per_res_key)) != 0) 7557 continue; 7558 7559 found = 1; 7560 lun->per_res[i].registered = 0; 7561 memset(&lun->per_res[i].res_key, 0, 7562 sizeof(struct scsi_per_res_key)); 7563 lun->pr_key_count--; 7564 7565 if (!persis_offset 7566 && i < CTL_MAX_INITIATORS) 7567 lun->pending_sense[i].ua_pending |= 7568 CTL_UA_REG_PREEMPT; 7569 else if (persis_offset 7570 && i >= persis_offset) 7571 lun->pending_sense[ 7572 i-persis_offset].ua_pending |= 7573 CTL_UA_REG_PREEMPT; 7574 } 7575 7576 if (!found) { 7577 mtx_unlock(&softc->ctl_lock); 7578 free(ctsio->kern_data_ptr, M_CTL); 7579 ctl_set_reservation_conflict(ctsio); 7580 ctl_done((union ctl_io *)ctsio); 7581 return (1); 7582 } 7583 mtx_unlock(&softc->ctl_lock); 7584 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7585 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7586 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7587 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7588 persis_io.pr.pr_info.res_type = type; 7589 memcpy(persis_io.pr.pr_info.sa_res_key, 7590 param->serv_act_res_key, 7591 sizeof(param->serv_act_res_key)); 7592 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7593 &persis_io, sizeof(persis_io), 0)) > 7594 CTL_HA_STATUS_SUCCESS) { 7595 printf("CTL:Persis Out error returned " 7596 "from ctl_ha_msg_send %d\n", 7597 isc_retval); 7598 } 7599 } 7600 } 7601 7602 lun->PRGeneration++; 7603 7604 return (retval); 7605} 7606 7607static void 7608ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7609{ 7610 int i; 7611 7612 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7613 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7614 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7615 msg->pr.pr_info.sa_res_key, 7616 sizeof(struct scsi_per_res_key)) != 0) { 7617 uint64_t sa_res_key; 7618 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7619 7620 if (sa_res_key == 0) { 7621 /* temporarily unregister this nexus */ 7622 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7623 7624 /* 7625 * Unregister everybody else and build UA for 7626 * them 7627 */ 7628 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7629 if (lun->per_res[i].registered == 0) 7630 continue; 7631 7632 if (!persis_offset 7633 && i < CTL_MAX_INITIATORS) 7634 lun->pending_sense[i].ua_pending |= 7635 CTL_UA_REG_PREEMPT; 7636 else if (persis_offset && i >= persis_offset) 7637 lun->pending_sense[i - 7638 persis_offset].ua_pending |= 7639 CTL_UA_REG_PREEMPT; 7640 lun->per_res[i].registered = 0; 7641 memset(&lun->per_res[i].res_key, 0, 7642 sizeof(struct scsi_per_res_key)); 7643 } 7644 7645 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7646 lun->pr_key_count = 1; 7647 lun->res_type = msg->pr.pr_info.res_type; 7648 if (lun->res_type != SPR_TYPE_WR_EX_AR 7649 && lun->res_type != SPR_TYPE_EX_AC_AR) 7650 lun->pr_res_idx = msg->pr.pr_info.residx; 7651 } else { 7652 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7653 if (memcmp(msg->pr.pr_info.sa_res_key, 7654 lun->per_res[i].res_key.key, 7655 sizeof(struct scsi_per_res_key)) != 0) 7656 continue; 7657 7658 lun->per_res[i].registered = 0; 7659 memset(&lun->per_res[i].res_key, 0, 7660 sizeof(struct scsi_per_res_key)); 7661 lun->pr_key_count--; 7662 7663 if (!persis_offset 7664 && i < persis_offset) 7665 lun->pending_sense[i].ua_pending |= 7666 CTL_UA_REG_PREEMPT; 7667 else if (persis_offset 7668 && i >= persis_offset) 7669 lun->pending_sense[i - 7670 persis_offset].ua_pending |= 7671 CTL_UA_REG_PREEMPT; 7672 } 7673 } 7674 } else { 7675 /* 7676 * Temporarily unregister so it won't get removed 7677 * or UA generated 7678 */ 7679 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7680 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7681 if (lun->per_res[i].registered == 0) 7682 continue; 7683 7684 if (memcmp(msg->pr.pr_info.sa_res_key, 7685 lun->per_res[i].res_key.key, 7686 sizeof(struct scsi_per_res_key)) == 0) { 7687 lun->per_res[i].registered = 0; 7688 memset(&lun->per_res[i].res_key, 0, 7689 sizeof(struct scsi_per_res_key)); 7690 lun->pr_key_count--; 7691 if (!persis_offset 7692 && i < CTL_MAX_INITIATORS) 7693 lun->pending_sense[i].ua_pending |= 7694 CTL_UA_REG_PREEMPT; 7695 else if (persis_offset 7696 && i >= persis_offset) 7697 lun->pending_sense[i - 7698 persis_offset].ua_pending |= 7699 CTL_UA_REG_PREEMPT; 7700 } else if (msg->pr.pr_info.res_type != lun->res_type 7701 && (lun->res_type == SPR_TYPE_WR_EX_RO 7702 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7703 if (!persis_offset 7704 && i < persis_offset) 7705 lun->pending_sense[i 7706 ].ua_pending |= 7707 CTL_UA_RES_RELEASE; 7708 else if (persis_offset 7709 && i >= persis_offset) 7710 lun->pending_sense[i - 7711 persis_offset].ua_pending |= 7712 CTL_UA_RES_RELEASE; 7713 } 7714 } 7715 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7716 lun->res_type = msg->pr.pr_info.res_type; 7717 if (lun->res_type != SPR_TYPE_WR_EX_AR 7718 && lun->res_type != SPR_TYPE_EX_AC_AR) 7719 lun->pr_res_idx = msg->pr.pr_info.residx; 7720 else 7721 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7722 } 7723 lun->PRGeneration++; 7724 7725} 7726 7727 7728int 7729ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7730{ 7731 int retval; 7732 int isc_retval; 7733 u_int32_t param_len; 7734 struct scsi_per_res_out *cdb; 7735 struct ctl_lun *lun; 7736 struct scsi_per_res_out_parms* param; 7737 struct ctl_softc *softc; 7738 uint32_t residx; 7739 uint64_t res_key, sa_res_key; 7740 uint8_t type; 7741 union ctl_ha_msg persis_io; 7742 int i; 7743 7744 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 7745 7746 retval = CTL_RETVAL_COMPLETE; 7747 7748 softc = control_softc; 7749 7750 cdb = (struct scsi_per_res_out *)ctsio->cdb; 7751 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7752 7753 /* 7754 * We only support whole-LUN scope. The scope & type are ignored for 7755 * register, register and ignore existing key and clear. 7756 * We sometimes ignore scope and type on preempts too!! 7757 * Verify reservation type here as well. 7758 */ 7759 type = cdb->scope_type & SPR_TYPE_MASK; 7760 if ((cdb->action == SPRO_RESERVE) 7761 || (cdb->action == SPRO_RELEASE)) { 7762 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 7763 ctl_set_invalid_field(/*ctsio*/ ctsio, 7764 /*sks_valid*/ 1, 7765 /*command*/ 1, 7766 /*field*/ 2, 7767 /*bit_valid*/ 1, 7768 /*bit*/ 4); 7769 ctl_done((union ctl_io *)ctsio); 7770 return (CTL_RETVAL_COMPLETE); 7771 } 7772 7773 if (type>8 || type==2 || type==4 || type==0) { 7774 ctl_set_invalid_field(/*ctsio*/ ctsio, 7775 /*sks_valid*/ 1, 7776 /*command*/ 1, 7777 /*field*/ 2, 7778 /*bit_valid*/ 1, 7779 /*bit*/ 0); 7780 ctl_done((union ctl_io *)ctsio); 7781 return (CTL_RETVAL_COMPLETE); 7782 } 7783 } 7784 7785 switch (cdb->action & SPRO_ACTION_MASK) { 7786 case SPRO_REGISTER: 7787 case SPRO_RESERVE: 7788 case SPRO_RELEASE: 7789 case SPRO_CLEAR: 7790 case SPRO_PREEMPT: 7791 case SPRO_REG_IGNO: 7792 break; 7793 case SPRO_REG_MOVE: 7794 case SPRO_PRE_ABO: 7795 default: 7796 ctl_set_invalid_field(/*ctsio*/ ctsio, 7797 /*sks_valid*/ 1, 7798 /*command*/ 1, 7799 /*field*/ 1, 7800 /*bit_valid*/ 1, 7801 /*bit*/ 0); 7802 ctl_done((union ctl_io *)ctsio); 7803 return (CTL_RETVAL_COMPLETE); 7804 break; /* NOTREACHED */ 7805 } 7806 7807 param_len = scsi_4btoul(cdb->length); 7808 7809 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 7810 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 7811 if (ctsio->kern_data_ptr == NULL) { 7812 ctl_set_busy(ctsio); 7813 ctl_done((union ctl_io *)ctsio); 7814 return (CTL_RETVAL_COMPLETE); 7815 } 7816 ctsio->kern_data_len = param_len; 7817 ctsio->kern_total_len = param_len; 7818 ctsio->kern_data_resid = 0; 7819 ctsio->kern_rel_offset = 0; 7820 ctsio->kern_sg_entries = 0; 7821 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7822 ctsio->be_move_done = ctl_config_move_done; 7823 ctl_datamove((union ctl_io *)ctsio); 7824 7825 return (CTL_RETVAL_COMPLETE); 7826 } 7827 7828 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 7829 7830 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 7831 res_key = scsi_8btou64(param->res_key.key); 7832 sa_res_key = scsi_8btou64(param->serv_act_res_key); 7833 7834 /* 7835 * Validate the reservation key here except for SPRO_REG_IGNO 7836 * This must be done for all other service actions 7837 */ 7838 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 7839 mtx_lock(&softc->ctl_lock); 7840 if (lun->per_res[residx].registered) { 7841 if (memcmp(param->res_key.key, 7842 lun->per_res[residx].res_key.key, 7843 ctl_min(sizeof(param->res_key), 7844 sizeof(lun->per_res[residx].res_key))) != 0) { 7845 /* 7846 * The current key passed in doesn't match 7847 * the one the initiator previously 7848 * registered. 7849 */ 7850 mtx_unlock(&softc->ctl_lock); 7851 free(ctsio->kern_data_ptr, M_CTL); 7852 ctl_set_reservation_conflict(ctsio); 7853 ctl_done((union ctl_io *)ctsio); 7854 return (CTL_RETVAL_COMPLETE); 7855 } 7856 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 7857 /* 7858 * We are not registered 7859 */ 7860 mtx_unlock(&softc->ctl_lock); 7861 free(ctsio->kern_data_ptr, M_CTL); 7862 ctl_set_reservation_conflict(ctsio); 7863 ctl_done((union ctl_io *)ctsio); 7864 return (CTL_RETVAL_COMPLETE); 7865 } else if (res_key != 0) { 7866 /* 7867 * We are not registered and trying to register but 7868 * the register key isn't zero. 7869 */ 7870 mtx_unlock(&softc->ctl_lock); 7871 free(ctsio->kern_data_ptr, M_CTL); 7872 ctl_set_reservation_conflict(ctsio); 7873 ctl_done((union ctl_io *)ctsio); 7874 return (CTL_RETVAL_COMPLETE); 7875 } 7876 mtx_unlock(&softc->ctl_lock); 7877 } 7878 7879 switch (cdb->action & SPRO_ACTION_MASK) { 7880 case SPRO_REGISTER: 7881 case SPRO_REG_IGNO: { 7882 7883#if 0 7884 printf("Registration received\n"); 7885#endif 7886 7887 /* 7888 * We don't support any of these options, as we report in 7889 * the read capabilities request (see 7890 * ctl_persistent_reserve_in(), above). 7891 */ 7892 if ((param->flags & SPR_SPEC_I_PT) 7893 || (param->flags & SPR_ALL_TG_PT) 7894 || (param->flags & SPR_APTPL)) { 7895 int bit_ptr; 7896 7897 if (param->flags & SPR_APTPL) 7898 bit_ptr = 0; 7899 else if (param->flags & SPR_ALL_TG_PT) 7900 bit_ptr = 2; 7901 else /* SPR_SPEC_I_PT */ 7902 bit_ptr = 3; 7903 7904 free(ctsio->kern_data_ptr, M_CTL); 7905 ctl_set_invalid_field(ctsio, 7906 /*sks_valid*/ 1, 7907 /*command*/ 0, 7908 /*field*/ 20, 7909 /*bit_valid*/ 1, 7910 /*bit*/ bit_ptr); 7911 ctl_done((union ctl_io *)ctsio); 7912 return (CTL_RETVAL_COMPLETE); 7913 } 7914 7915 mtx_lock(&softc->ctl_lock); 7916 7917 /* 7918 * The initiator wants to clear the 7919 * key/unregister. 7920 */ 7921 if (sa_res_key == 0) { 7922 if ((res_key == 0 7923 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 7924 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 7925 && !lun->per_res[residx].registered)) { 7926 mtx_unlock(&softc->ctl_lock); 7927 goto done; 7928 } 7929 7930 lun->per_res[residx].registered = 0; 7931 memset(&lun->per_res[residx].res_key, 7932 0, sizeof(lun->per_res[residx].res_key)); 7933 lun->pr_key_count--; 7934 7935 if (residx == lun->pr_res_idx) { 7936 lun->flags &= ~CTL_LUN_PR_RESERVED; 7937 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 7938 7939 if ((lun->res_type == SPR_TYPE_WR_EX_RO 7940 || lun->res_type == SPR_TYPE_EX_AC_RO) 7941 && lun->pr_key_count) { 7942 /* 7943 * If the reservation is a registrants 7944 * only type we need to generate a UA 7945 * for other registered inits. The 7946 * sense code should be RESERVATIONS 7947 * RELEASED 7948 */ 7949 7950 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 7951 if (lun->per_res[ 7952 i+persis_offset].registered 7953 == 0) 7954 continue; 7955 lun->pending_sense[i 7956 ].ua_pending |= 7957 CTL_UA_RES_RELEASE; 7958 } 7959 } 7960 lun->res_type = 0; 7961 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7962 if (lun->pr_key_count==0) { 7963 lun->flags &= ~CTL_LUN_PR_RESERVED; 7964 lun->res_type = 0; 7965 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 7966 } 7967 } 7968 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7969 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7970 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 7971 persis_io.pr.pr_info.residx = residx; 7972 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7973 &persis_io, sizeof(persis_io), 0 )) > 7974 CTL_HA_STATUS_SUCCESS) { 7975 printf("CTL:Persis Out error returned from " 7976 "ctl_ha_msg_send %d\n", isc_retval); 7977 } 7978 mtx_unlock(&softc->ctl_lock); 7979 } else /* sa_res_key != 0 */ { 7980 7981 /* 7982 * If we aren't registered currently then increment 7983 * the key count and set the registered flag. 7984 */ 7985 if (!lun->per_res[residx].registered) { 7986 lun->pr_key_count++; 7987 lun->per_res[residx].registered = 1; 7988 } 7989 7990 memcpy(&lun->per_res[residx].res_key, 7991 param->serv_act_res_key, 7992 ctl_min(sizeof(param->serv_act_res_key), 7993 sizeof(lun->per_res[residx].res_key))); 7994 7995 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7996 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7997 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 7998 persis_io.pr.pr_info.residx = residx; 7999 memcpy(persis_io.pr.pr_info.sa_res_key, 8000 param->serv_act_res_key, 8001 sizeof(param->serv_act_res_key)); 8002 mtx_unlock(&softc->ctl_lock); 8003 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8004 &persis_io, sizeof(persis_io), 0)) > 8005 CTL_HA_STATUS_SUCCESS) { 8006 printf("CTL:Persis Out error returned from " 8007 "ctl_ha_msg_send %d\n", isc_retval); 8008 } 8009 } 8010 lun->PRGeneration++; 8011 8012 break; 8013 } 8014 case SPRO_RESERVE: 8015#if 0 8016 printf("Reserve executed type %d\n", type); 8017#endif 8018 mtx_lock(&softc->ctl_lock); 8019 if (lun->flags & CTL_LUN_PR_RESERVED) { 8020 /* 8021 * if this isn't the reservation holder and it's 8022 * not a "all registrants" type or if the type is 8023 * different then we have a conflict 8024 */ 8025 if ((lun->pr_res_idx != residx 8026 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8027 || lun->res_type != type) { 8028 mtx_unlock(&softc->ctl_lock); 8029 free(ctsio->kern_data_ptr, M_CTL); 8030 ctl_set_reservation_conflict(ctsio); 8031 ctl_done((union ctl_io *)ctsio); 8032 return (CTL_RETVAL_COMPLETE); 8033 } 8034 } else /* create a reservation */ { 8035 /* 8036 * If it's not an "all registrants" type record 8037 * reservation holder 8038 */ 8039 if (type != SPR_TYPE_WR_EX_AR 8040 && type != SPR_TYPE_EX_AC_AR) 8041 lun->pr_res_idx = residx; /* Res holder */ 8042 else 8043 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8044 8045 lun->flags |= CTL_LUN_PR_RESERVED; 8046 lun->res_type = type; 8047 8048 mtx_unlock(&softc->ctl_lock); 8049 8050 /* send msg to other side */ 8051 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8052 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8053 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8054 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8055 persis_io.pr.pr_info.res_type = type; 8056 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8057 &persis_io, sizeof(persis_io), 0)) > 8058 CTL_HA_STATUS_SUCCESS) { 8059 printf("CTL:Persis Out error returned from " 8060 "ctl_ha_msg_send %d\n", isc_retval); 8061 } 8062 } 8063 break; 8064 8065 case SPRO_RELEASE: 8066 mtx_lock(&softc->ctl_lock); 8067 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8068 /* No reservation exists return good status */ 8069 mtx_unlock(&softc->ctl_lock); 8070 goto done; 8071 } 8072 /* 8073 * Is this nexus a reservation holder? 8074 */ 8075 if (lun->pr_res_idx != residx 8076 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8077 /* 8078 * not a res holder return good status but 8079 * do nothing 8080 */ 8081 mtx_unlock(&softc->ctl_lock); 8082 goto done; 8083 } 8084 8085 if (lun->res_type != type) { 8086 mtx_unlock(&softc->ctl_lock); 8087 free(ctsio->kern_data_ptr, M_CTL); 8088 ctl_set_illegal_pr_release(ctsio); 8089 ctl_done((union ctl_io *)ctsio); 8090 return (CTL_RETVAL_COMPLETE); 8091 } 8092 8093 /* okay to release */ 8094 lun->flags &= ~CTL_LUN_PR_RESERVED; 8095 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8096 lun->res_type = 0; 8097 8098 /* 8099 * if this isn't an exclusive access 8100 * res generate UA for all other 8101 * registrants. 8102 */ 8103 if (type != SPR_TYPE_EX_AC 8104 && type != SPR_TYPE_WR_EX) { 8105 /* 8106 * temporarily unregister so we don't generate UA 8107 */ 8108 lun->per_res[residx].registered = 0; 8109 8110 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8111 if (lun->per_res[i+persis_offset].registered 8112 == 0) 8113 continue; 8114 lun->pending_sense[i].ua_pending |= 8115 CTL_UA_RES_RELEASE; 8116 } 8117 8118 lun->per_res[residx].registered = 1; 8119 } 8120 mtx_unlock(&softc->ctl_lock); 8121 /* Send msg to other side */ 8122 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8123 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8124 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8125 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8126 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8127 printf("CTL:Persis Out error returned from " 8128 "ctl_ha_msg_send %d\n", isc_retval); 8129 } 8130 break; 8131 8132 case SPRO_CLEAR: 8133 /* send msg to other side */ 8134 8135 mtx_lock(&softc->ctl_lock); 8136 lun->flags &= ~CTL_LUN_PR_RESERVED; 8137 lun->res_type = 0; 8138 lun->pr_key_count = 0; 8139 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8140 8141 8142 memset(&lun->per_res[residx].res_key, 8143 0, sizeof(lun->per_res[residx].res_key)); 8144 lun->per_res[residx].registered = 0; 8145 8146 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8147 if (lun->per_res[i].registered) { 8148 if (!persis_offset && i < CTL_MAX_INITIATORS) 8149 lun->pending_sense[i].ua_pending |= 8150 CTL_UA_RES_PREEMPT; 8151 else if (persis_offset && i >= persis_offset) 8152 lun->pending_sense[i-persis_offset 8153 ].ua_pending |= CTL_UA_RES_PREEMPT; 8154 8155 memset(&lun->per_res[i].res_key, 8156 0, sizeof(struct scsi_per_res_key)); 8157 lun->per_res[i].registered = 0; 8158 } 8159 lun->PRGeneration++; 8160 mtx_unlock(&softc->ctl_lock); 8161 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8162 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8163 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8164 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8165 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8166 printf("CTL:Persis Out error returned from " 8167 "ctl_ha_msg_send %d\n", isc_retval); 8168 } 8169 break; 8170 8171 case SPRO_PREEMPT: { 8172 int nretval; 8173 8174 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8175 residx, ctsio, cdb, param); 8176 if (nretval != 0) 8177 return (CTL_RETVAL_COMPLETE); 8178 break; 8179 } 8180 case SPRO_REG_MOVE: 8181 case SPRO_PRE_ABO: 8182 default: 8183 free(ctsio->kern_data_ptr, M_CTL); 8184 ctl_set_invalid_field(/*ctsio*/ ctsio, 8185 /*sks_valid*/ 1, 8186 /*command*/ 1, 8187 /*field*/ 1, 8188 /*bit_valid*/ 1, 8189 /*bit*/ 0); 8190 ctl_done((union ctl_io *)ctsio); 8191 return (CTL_RETVAL_COMPLETE); 8192 break; /* NOTREACHED */ 8193 } 8194 8195done: 8196 free(ctsio->kern_data_ptr, M_CTL); 8197 ctl_set_success(ctsio); 8198 ctl_done((union ctl_io *)ctsio); 8199 8200 return (retval); 8201} 8202 8203/* 8204 * This routine is for handling a message from the other SC pertaining to 8205 * persistent reserve out. All the error checking will have been done 8206 * so only perorming the action need be done here to keep the two 8207 * in sync. 8208 */ 8209static void 8210ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8211{ 8212 struct ctl_lun *lun; 8213 struct ctl_softc *softc; 8214 int i; 8215 8216 softc = control_softc; 8217 8218 mtx_lock(&softc->ctl_lock); 8219 8220 lun = softc->ctl_luns[msg->hdr.nexus.targ_lun]; 8221 switch(msg->pr.pr_info.action) { 8222 case CTL_PR_REG_KEY: 8223 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8224 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8225 lun->pr_key_count++; 8226 } 8227 lun->PRGeneration++; 8228 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8229 msg->pr.pr_info.sa_res_key, 8230 sizeof(struct scsi_per_res_key)); 8231 break; 8232 8233 case CTL_PR_UNREG_KEY: 8234 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8235 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8236 0, sizeof(struct scsi_per_res_key)); 8237 lun->pr_key_count--; 8238 8239 /* XXX Need to see if the reservation has been released */ 8240 /* if so do we need to generate UA? */ 8241 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8242 lun->flags &= ~CTL_LUN_PR_RESERVED; 8243 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8244 8245 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8246 || lun->res_type == SPR_TYPE_EX_AC_RO) 8247 && lun->pr_key_count) { 8248 /* 8249 * If the reservation is a registrants 8250 * only type we need to generate a UA 8251 * for other registered inits. The 8252 * sense code should be RESERVATIONS 8253 * RELEASED 8254 */ 8255 8256 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8257 if (lun->per_res[i+ 8258 persis_offset].registered == 0) 8259 continue; 8260 8261 lun->pending_sense[i 8262 ].ua_pending |= 8263 CTL_UA_RES_RELEASE; 8264 } 8265 } 8266 lun->res_type = 0; 8267 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8268 if (lun->pr_key_count==0) { 8269 lun->flags &= ~CTL_LUN_PR_RESERVED; 8270 lun->res_type = 0; 8271 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8272 } 8273 } 8274 lun->PRGeneration++; 8275 break; 8276 8277 case CTL_PR_RESERVE: 8278 lun->flags |= CTL_LUN_PR_RESERVED; 8279 lun->res_type = msg->pr.pr_info.res_type; 8280 lun->pr_res_idx = msg->pr.pr_info.residx; 8281 8282 break; 8283 8284 case CTL_PR_RELEASE: 8285 /* 8286 * if this isn't an exclusive access res generate UA for all 8287 * other registrants. 8288 */ 8289 if (lun->res_type != SPR_TYPE_EX_AC 8290 && lun->res_type != SPR_TYPE_WR_EX) { 8291 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8292 if (lun->per_res[i+persis_offset].registered) 8293 lun->pending_sense[i].ua_pending |= 8294 CTL_UA_RES_RELEASE; 8295 } 8296 8297 lun->flags &= ~CTL_LUN_PR_RESERVED; 8298 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8299 lun->res_type = 0; 8300 break; 8301 8302 case CTL_PR_PREEMPT: 8303 ctl_pro_preempt_other(lun, msg); 8304 break; 8305 case CTL_PR_CLEAR: 8306 lun->flags &= ~CTL_LUN_PR_RESERVED; 8307 lun->res_type = 0; 8308 lun->pr_key_count = 0; 8309 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8310 8311 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8312 if (lun->per_res[i].registered == 0) 8313 continue; 8314 if (!persis_offset 8315 && i < CTL_MAX_INITIATORS) 8316 lun->pending_sense[i].ua_pending |= 8317 CTL_UA_RES_PREEMPT; 8318 else if (persis_offset 8319 && i >= persis_offset) 8320 lun->pending_sense[i-persis_offset].ua_pending|= 8321 CTL_UA_RES_PREEMPT; 8322 memset(&lun->per_res[i].res_key, 0, 8323 sizeof(struct scsi_per_res_key)); 8324 lun->per_res[i].registered = 0; 8325 } 8326 lun->PRGeneration++; 8327 break; 8328 } 8329 8330 mtx_unlock(&softc->ctl_lock); 8331} 8332 8333int 8334ctl_read_write(struct ctl_scsiio *ctsio) 8335{ 8336 struct ctl_lun *lun; 8337 struct ctl_lba_len lbalen; 8338 uint64_t lba; 8339 uint32_t num_blocks; 8340 int reladdr, fua, dpo, ebp; 8341 int retval; 8342 int isread; 8343 8344 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8345 8346 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8347 8348 reladdr = 0; 8349 fua = 0; 8350 dpo = 0; 8351 ebp = 0; 8352 8353 retval = CTL_RETVAL_COMPLETE; 8354 8355 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8356 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8357 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8358 uint32_t residx; 8359 8360 /* 8361 * XXX KDM need a lock here. 8362 */ 8363 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8364 if ((lun->res_type == SPR_TYPE_EX_AC 8365 && residx != lun->pr_res_idx) 8366 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8367 || lun->res_type == SPR_TYPE_EX_AC_AR) 8368 && !lun->per_res[residx].registered)) { 8369 ctl_set_reservation_conflict(ctsio); 8370 ctl_done((union ctl_io *)ctsio); 8371 return (CTL_RETVAL_COMPLETE); 8372 } 8373 } 8374 8375 switch (ctsio->cdb[0]) { 8376 case READ_6: 8377 case WRITE_6: { 8378 struct scsi_rw_6 *cdb; 8379 8380 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8381 8382 lba = scsi_3btoul(cdb->addr); 8383 /* only 5 bits are valid in the most significant address byte */ 8384 lba &= 0x1fffff; 8385 num_blocks = cdb->length; 8386 /* 8387 * This is correct according to SBC-2. 8388 */ 8389 if (num_blocks == 0) 8390 num_blocks = 256; 8391 break; 8392 } 8393 case READ_10: 8394 case WRITE_10: { 8395 struct scsi_rw_10 *cdb; 8396 8397 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8398 8399 if (cdb->byte2 & SRW10_RELADDR) 8400 reladdr = 1; 8401 if (cdb->byte2 & SRW10_FUA) 8402 fua = 1; 8403 if (cdb->byte2 & SRW10_DPO) 8404 dpo = 1; 8405 8406 if ((cdb->opcode == WRITE_10) 8407 && (cdb->byte2 & SRW10_EBP)) 8408 ebp = 1; 8409 8410 lba = scsi_4btoul(cdb->addr); 8411 num_blocks = scsi_2btoul(cdb->length); 8412 break; 8413 } 8414 case WRITE_VERIFY_10: { 8415 struct scsi_write_verify_10 *cdb; 8416 8417 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8418 8419 /* 8420 * XXX KDM we should do actual write verify support at some 8421 * point. This is obviously fake, we're just translating 8422 * things to a write. So we don't even bother checking the 8423 * BYTCHK field, since we don't do any verification. If 8424 * the user asks for it, we'll just pretend we did it. 8425 */ 8426 if (cdb->byte2 & SWV_DPO) 8427 dpo = 1; 8428 8429 lba = scsi_4btoul(cdb->addr); 8430 num_blocks = scsi_2btoul(cdb->length); 8431 break; 8432 } 8433 case READ_12: 8434 case WRITE_12: { 8435 struct scsi_rw_12 *cdb; 8436 8437 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8438 8439 if (cdb->byte2 & SRW12_RELADDR) 8440 reladdr = 1; 8441 if (cdb->byte2 & SRW12_FUA) 8442 fua = 1; 8443 if (cdb->byte2 & SRW12_DPO) 8444 dpo = 1; 8445 lba = scsi_4btoul(cdb->addr); 8446 num_blocks = scsi_4btoul(cdb->length); 8447 break; 8448 } 8449 case WRITE_VERIFY_12: { 8450 struct scsi_write_verify_12 *cdb; 8451 8452 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8453 8454 if (cdb->byte2 & SWV_DPO) 8455 dpo = 1; 8456 8457 lba = scsi_4btoul(cdb->addr); 8458 num_blocks = scsi_4btoul(cdb->length); 8459 8460 break; 8461 } 8462 case READ_16: 8463 case WRITE_16: { 8464 struct scsi_rw_16 *cdb; 8465 8466 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8467 8468 if (cdb->byte2 & SRW12_RELADDR) 8469 reladdr = 1; 8470 if (cdb->byte2 & SRW12_FUA) 8471 fua = 1; 8472 if (cdb->byte2 & SRW12_DPO) 8473 dpo = 1; 8474 8475 lba = scsi_8btou64(cdb->addr); 8476 num_blocks = scsi_4btoul(cdb->length); 8477 break; 8478 } 8479 case WRITE_VERIFY_16: { 8480 struct scsi_write_verify_16 *cdb; 8481 8482 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8483 8484 if (cdb->byte2 & SWV_DPO) 8485 dpo = 1; 8486 8487 lba = scsi_8btou64(cdb->addr); 8488 num_blocks = scsi_4btoul(cdb->length); 8489 break; 8490 } 8491 default: 8492 /* 8493 * We got a command we don't support. This shouldn't 8494 * happen, commands should be filtered out above us. 8495 */ 8496 ctl_set_invalid_opcode(ctsio); 8497 ctl_done((union ctl_io *)ctsio); 8498 8499 return (CTL_RETVAL_COMPLETE); 8500 break; /* NOTREACHED */ 8501 } 8502 8503 /* 8504 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8505 * interesting for us, but if RAIDCore is in write-back mode, 8506 * getting it to do write-through for a particular transaction may 8507 * not be possible. 8508 */ 8509 /* 8510 * We don't support relative addressing. That also requires 8511 * supporting linked commands, which we don't do. 8512 */ 8513 if (reladdr != 0) { 8514 ctl_set_invalid_field(ctsio, 8515 /*sks_valid*/ 1, 8516 /*command*/ 1, 8517 /*field*/ 1, 8518 /*bit_valid*/ 1, 8519 /*bit*/ 0); 8520 ctl_done((union ctl_io *)ctsio); 8521 return (CTL_RETVAL_COMPLETE); 8522 } 8523 8524 /* 8525 * The first check is to make sure we're in bounds, the second 8526 * check is to catch wrap-around problems. If the lba + num blocks 8527 * is less than the lba, then we've wrapped around and the block 8528 * range is invalid anyway. 8529 */ 8530 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8531 || ((lba + num_blocks) < lba)) { 8532 ctl_set_lba_out_of_range(ctsio); 8533 ctl_done((union ctl_io *)ctsio); 8534 return (CTL_RETVAL_COMPLETE); 8535 } 8536 8537 /* 8538 * According to SBC-3, a transfer length of 0 is not an error. 8539 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8540 * translates to 256 blocks for those commands. 8541 */ 8542 if (num_blocks == 0) { 8543 ctl_set_success(ctsio); 8544 ctl_done((union ctl_io *)ctsio); 8545 return (CTL_RETVAL_COMPLETE); 8546 } 8547 8548 lbalen.lba = lba; 8549 lbalen.len = num_blocks; 8550 memcpy(ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, &lbalen, 8551 sizeof(lbalen)); 8552 8553 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8554 8555 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8556 8557 return (retval); 8558} 8559 8560int 8561ctl_report_luns(struct ctl_scsiio *ctsio) 8562{ 8563 struct scsi_report_luns *cdb; 8564 struct scsi_report_luns_data *lun_data; 8565 struct ctl_lun *lun, *request_lun; 8566 int num_luns, retval; 8567 uint32_t alloc_len, lun_datalen; 8568 int num_filled, well_known; 8569 uint32_t initidx; 8570 8571 retval = CTL_RETVAL_COMPLETE; 8572 well_known = 0; 8573 8574 cdb = (struct scsi_report_luns *)ctsio->cdb; 8575 8576 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 8577 8578 mtx_lock(&control_softc->ctl_lock); 8579 num_luns = control_softc->num_luns; 8580 mtx_unlock(&control_softc->ctl_lock); 8581 8582 switch (cdb->select_report) { 8583 case RPL_REPORT_DEFAULT: 8584 case RPL_REPORT_ALL: 8585 break; 8586 case RPL_REPORT_WELLKNOWN: 8587 well_known = 1; 8588 num_luns = 0; 8589 break; 8590 default: 8591 ctl_set_invalid_field(ctsio, 8592 /*sks_valid*/ 1, 8593 /*command*/ 1, 8594 /*field*/ 2, 8595 /*bit_valid*/ 0, 8596 /*bit*/ 0); 8597 ctl_done((union ctl_io *)ctsio); 8598 return (retval); 8599 break; /* NOTREACHED */ 8600 } 8601 8602 alloc_len = scsi_4btoul(cdb->length); 8603 /* 8604 * The initiator has to allocate at least 16 bytes for this request, 8605 * so he can at least get the header and the first LUN. Otherwise 8606 * we reject the request (per SPC-3 rev 14, section 6.21). 8607 */ 8608 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 8609 sizeof(struct scsi_report_luns_lundata))) { 8610 ctl_set_invalid_field(ctsio, 8611 /*sks_valid*/ 1, 8612 /*command*/ 1, 8613 /*field*/ 6, 8614 /*bit_valid*/ 0, 8615 /*bit*/ 0); 8616 ctl_done((union ctl_io *)ctsio); 8617 return (retval); 8618 } 8619 8620 request_lun = (struct ctl_lun *) 8621 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8622 8623 lun_datalen = sizeof(*lun_data) + 8624 (num_luns * sizeof(struct scsi_report_luns_lundata)); 8625 8626 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK); 8627 if (ctsio->kern_data_ptr == NULL) { 8628 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8629 ctsio->scsi_status = SCSI_STATUS_BUSY; 8630 ctl_done((union ctl_io *)ctsio); 8631 return (CTL_RETVAL_COMPLETE); 8632 } 8633 8634 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 8635 ctsio->kern_sg_entries = 0; 8636 8637 if (lun_datalen < alloc_len) { 8638 ctsio->residual = alloc_len - lun_datalen; 8639 ctsio->kern_data_len = lun_datalen; 8640 ctsio->kern_total_len = lun_datalen; 8641 } else { 8642 ctsio->residual = 0; 8643 ctsio->kern_data_len = alloc_len; 8644 ctsio->kern_total_len = alloc_len; 8645 } 8646 ctsio->kern_data_resid = 0; 8647 ctsio->kern_rel_offset = 0; 8648 ctsio->kern_sg_entries = 0; 8649 8650 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8651 8652 memset(lun_data, 0, lun_datalen); 8653 8654 /* 8655 * We set this to the actual data length, regardless of how much 8656 * space we actually have to return results. If the user looks at 8657 * this value, he'll know whether or not he allocated enough space 8658 * and reissue the command if necessary. We don't support well 8659 * known logical units, so if the user asks for that, return none. 8660 */ 8661 scsi_ulto4b(lun_datalen - 8, lun_data->length); 8662 8663 mtx_lock(&control_softc->ctl_lock); 8664 for (num_filled = 0, lun = STAILQ_FIRST(&control_softc->lun_list); 8665 (lun != NULL) && (num_filled < num_luns); 8666 lun = STAILQ_NEXT(lun, links)) { 8667 8668 if (lun->lun <= 0xff) { 8669 /* 8670 * Peripheral addressing method, bus number 0. 8671 */ 8672 lun_data->luns[num_filled].lundata[0] = 8673 RPL_LUNDATA_ATYP_PERIPH; 8674 lun_data->luns[num_filled].lundata[1] = lun->lun; 8675 num_filled++; 8676 } else if (lun->lun <= 0x3fff) { 8677 /* 8678 * Flat addressing method. 8679 */ 8680 lun_data->luns[num_filled].lundata[0] = 8681 RPL_LUNDATA_ATYP_FLAT | 8682 (lun->lun & RPL_LUNDATA_FLAT_LUN_MASK); 8683#ifdef OLDCTLHEADERS 8684 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 8685 (lun->lun & SRLD_BUS_LUN_MASK); 8686#endif 8687 lun_data->luns[num_filled].lundata[1] = 8688#ifdef OLDCTLHEADERS 8689 lun->lun >> SRLD_BUS_LUN_BITS; 8690#endif 8691 lun->lun >> RPL_LUNDATA_FLAT_LUN_BITS; 8692 num_filled++; 8693 } else { 8694 printf("ctl_report_luns: bogus LUN number %jd, " 8695 "skipping\n", (intmax_t)lun->lun); 8696 } 8697 /* 8698 * According to SPC-3, rev 14 section 6.21: 8699 * 8700 * "The execution of a REPORT LUNS command to any valid and 8701 * installed logical unit shall clear the REPORTED LUNS DATA 8702 * HAS CHANGED unit attention condition for all logical 8703 * units of that target with respect to the requesting 8704 * initiator. A valid and installed logical unit is one 8705 * having a PERIPHERAL QUALIFIER of 000b in the standard 8706 * INQUIRY data (see 6.4.2)." 8707 * 8708 * If request_lun is NULL, the LUN this report luns command 8709 * was issued to is either disabled or doesn't exist. In that 8710 * case, we shouldn't clear any pending lun change unit 8711 * attention. 8712 */ 8713 if (request_lun != NULL) 8714 lun->pending_sense[initidx].ua_pending &= 8715 ~CTL_UA_LUN_CHANGE; 8716 } 8717 mtx_unlock(&control_softc->ctl_lock); 8718 8719 /* 8720 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 8721 * this request. 8722 */ 8723 ctsio->scsi_status = SCSI_STATUS_OK; 8724 8725 ctsio->be_move_done = ctl_config_move_done; 8726 ctl_datamove((union ctl_io *)ctsio); 8727 8728 return (retval); 8729} 8730 8731int 8732ctl_request_sense(struct ctl_scsiio *ctsio) 8733{ 8734 struct scsi_request_sense *cdb; 8735 struct scsi_sense_data *sense_ptr; 8736 struct ctl_lun *lun; 8737 uint32_t initidx; 8738 int have_error; 8739 ctl_sense_format sense_format; 8740 8741 cdb = (struct scsi_request_sense *)ctsio->cdb; 8742 8743 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8744 8745 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 8746 8747 /* 8748 * Determine which sense format the user wants. 8749 */ 8750 if (cdb->byte2 & SRS_DESC) 8751 sense_format = CTL_SENSE_DESCRIPTOR; 8752 else 8753 sense_format = CTL_SENSE_FIXED; 8754 8755 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 8756 if (ctsio->kern_data_ptr == NULL) { 8757 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8758 ctsio->scsi_status = SCSI_STATUS_BUSY; 8759 ctl_done((union ctl_io *)ctsio); 8760 return (CTL_RETVAL_COMPLETE); 8761 } 8762 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 8763 ctsio->kern_sg_entries = 0; 8764 8765 /* 8766 * struct scsi_sense_data, which is currently set to 256 bytes, is 8767 * larger than the largest allowed value for the length field in the 8768 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 8769 */ 8770 ctsio->residual = 0; 8771 ctsio->kern_data_len = cdb->length; 8772 ctsio->kern_total_len = cdb->length; 8773 8774 ctsio->kern_data_resid = 0; 8775 ctsio->kern_rel_offset = 0; 8776 ctsio->kern_sg_entries = 0; 8777 8778 /* 8779 * If we don't have a LUN, we don't have any pending sense. 8780 */ 8781 if (lun == NULL) 8782 goto no_sense; 8783 8784 have_error = 0; 8785 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 8786 /* 8787 * Check for pending sense, and then for pending unit attentions. 8788 * Pending sense gets returned first, then pending unit attentions. 8789 */ 8790 mtx_lock(&lun->ctl_softc->ctl_lock); 8791 if (ctl_is_set(lun->have_ca, initidx)) { 8792 ctl_sense_format stored_format; 8793 8794 /* 8795 * Check to see which sense format was used for the stored 8796 * sense data. 8797 */ 8798 stored_format = ctl_get_sense_format( 8799 &lun->pending_sense[initidx].sense); 8800 8801 /* 8802 * If the user requested a different sense format than the 8803 * one we stored, then we need to convert it to the other 8804 * format. If we're going from descriptor to fixed format 8805 * sense data, we may lose things in translation, depending 8806 * on what options were used. 8807 */ 8808 if ((stored_format == CTL_SENSE_FIXED) 8809 && (sense_format == CTL_SENSE_DESCRIPTOR)) 8810 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 8811 &lun->pending_sense[initidx].sense, 8812 (struct scsi_sense_data_desc *)sense_ptr); 8813 else if ((stored_format == CTL_SENSE_DESCRIPTOR) 8814 && (sense_format == CTL_SENSE_FIXED)) 8815 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 8816 &lun->pending_sense[initidx].sense, 8817 (struct scsi_sense_data_fixed *)sense_ptr); 8818 else 8819 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 8820 ctl_min(sizeof(*sense_ptr), 8821 sizeof(lun->pending_sense[initidx].sense))); 8822 8823 ctl_clear_mask(lun->have_ca, initidx); 8824 have_error = 1; 8825 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 8826 ctl_ua_type ua_type; 8827 8828 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 8829 sense_ptr, sense_format); 8830 if (ua_type != CTL_UA_NONE) { 8831 have_error = 1; 8832 /* We're reporting this UA, so clear it */ 8833 lun->pending_sense[initidx].ua_pending &= ~ua_type; 8834 } 8835 } 8836 mtx_unlock(&lun->ctl_softc->ctl_lock); 8837 8838 /* 8839 * We already have a pending error, return it. 8840 */ 8841 if (have_error != 0) { 8842 /* 8843 * We report the SCSI status as OK, since the status of the 8844 * request sense command itself is OK. 8845 */ 8846 ctsio->scsi_status = SCSI_STATUS_OK; 8847 8848 /* 8849 * We report 0 for the sense length, because we aren't doing 8850 * autosense in this case. We're reporting sense as 8851 * parameter data. 8852 */ 8853 ctsio->sense_len = 0; 8854 8855 ctsio->be_move_done = ctl_config_move_done; 8856 ctl_datamove((union ctl_io *)ctsio); 8857 8858 return (CTL_RETVAL_COMPLETE); 8859 } 8860 8861no_sense: 8862 8863 /* 8864 * No sense information to report, so we report that everything is 8865 * okay. 8866 */ 8867 ctl_set_sense_data(sense_ptr, 8868 lun, 8869 sense_format, 8870 /*current_error*/ 1, 8871 /*sense_key*/ SSD_KEY_NO_SENSE, 8872 /*asc*/ 0x00, 8873 /*ascq*/ 0x00, 8874 SSD_ELEM_NONE); 8875 8876 ctsio->scsi_status = SCSI_STATUS_OK; 8877 8878 /* 8879 * We report 0 for the sense length, because we aren't doing 8880 * autosense in this case. We're reporting sense as parameter data. 8881 */ 8882 ctsio->sense_len = 0; 8883 ctsio->be_move_done = ctl_config_move_done; 8884 ctl_datamove((union ctl_io *)ctsio); 8885 8886 return (CTL_RETVAL_COMPLETE); 8887} 8888 8889int 8890ctl_tur(struct ctl_scsiio *ctsio) 8891{ 8892 struct ctl_lun *lun; 8893 8894 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8895 8896 CTL_DEBUG_PRINT(("ctl_tur\n")); 8897 8898 if (lun == NULL) 8899 return (-EINVAL); 8900 8901 ctsio->scsi_status = SCSI_STATUS_OK; 8902 ctsio->io_hdr.status = CTL_SUCCESS; 8903 8904 ctl_done((union ctl_io *)ctsio); 8905 8906 return (CTL_RETVAL_COMPLETE); 8907} 8908 8909#ifdef notyet 8910static int 8911ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 8912{ 8913 8914} 8915#endif 8916 8917static int 8918ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 8919{ 8920 struct scsi_vpd_supported_pages *pages; 8921 int sup_page_size; 8922 struct ctl_lun *lun; 8923 8924 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8925 8926 sup_page_size = sizeof(struct scsi_vpd_supported_pages) + 8927 SCSI_EVPD_NUM_SUPPORTED_PAGES; 8928 /* 8929 * XXX KDM GFP_??? We probably don't want to wait here, 8930 * unless we end up having a process/thread context. 8931 */ 8932 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK); 8933 if (ctsio->kern_data_ptr == NULL) { 8934 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8935 ctsio->scsi_status = SCSI_STATUS_BUSY; 8936 ctl_done((union ctl_io *)ctsio); 8937 return (CTL_RETVAL_COMPLETE); 8938 } 8939 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 8940 ctsio->kern_sg_entries = 0; 8941 8942 if (sup_page_size < alloc_len) { 8943 ctsio->residual = alloc_len - sup_page_size; 8944 ctsio->kern_data_len = sup_page_size; 8945 ctsio->kern_total_len = sup_page_size; 8946 } else { 8947 ctsio->residual = 0; 8948 ctsio->kern_data_len = alloc_len; 8949 ctsio->kern_total_len = alloc_len; 8950 } 8951 ctsio->kern_data_resid = 0; 8952 ctsio->kern_rel_offset = 0; 8953 ctsio->kern_sg_entries = 0; 8954 8955 memset(pages, 0, sup_page_size); 8956 8957 /* 8958 * The control device is always connected. The disk device, on the 8959 * other hand, may not be online all the time. Need to change this 8960 * to figure out whether the disk device is actually online or not. 8961 */ 8962 if (lun != NULL) 8963 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 8964 lun->be_lun->lun_type; 8965 else 8966 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 8967 8968 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 8969 /* Supported VPD pages */ 8970 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 8971 /* Serial Number */ 8972 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 8973 /* Device Identification */ 8974 pages->page_list[2] = SVPD_DEVICE_ID; 8975 8976 ctsio->scsi_status = SCSI_STATUS_OK; 8977 8978 ctsio->be_move_done = ctl_config_move_done; 8979 ctl_datamove((union ctl_io *)ctsio); 8980 8981 return (CTL_RETVAL_COMPLETE); 8982} 8983 8984static int 8985ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 8986{ 8987 struct scsi_vpd_unit_serial_number *sn_ptr; 8988 struct ctl_lun *lun; 8989#ifndef CTL_USE_BACKEND_SN 8990 char tmpstr[32]; 8991#endif 8992 8993 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8994 8995 /* XXX KDM which malloc flags here?? */ 8996 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK); 8997 if (ctsio->kern_data_ptr == NULL) { 8998 ctsio->io_hdr.status = CTL_SCSI_ERROR; 8999 ctsio->scsi_status = SCSI_STATUS_BUSY; 9000 ctl_done((union ctl_io *)ctsio); 9001 return (CTL_RETVAL_COMPLETE); 9002 } 9003 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9004 ctsio->kern_sg_entries = 0; 9005 9006 if (sizeof(*sn_ptr) < alloc_len) { 9007 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9008 ctsio->kern_data_len = sizeof(*sn_ptr); 9009 ctsio->kern_total_len = sizeof(*sn_ptr); 9010 } else { 9011 ctsio->residual = 0; 9012 ctsio->kern_data_len = alloc_len; 9013 ctsio->kern_total_len = alloc_len; 9014 } 9015 ctsio->kern_data_resid = 0; 9016 ctsio->kern_rel_offset = 0; 9017 ctsio->kern_sg_entries = 0; 9018 9019 memset(sn_ptr, 0, sizeof(*sn_ptr)); 9020 9021 /* 9022 * The control device is always connected. The disk device, on the 9023 * other hand, may not be online all the time. Need to change this 9024 * to figure out whether the disk device is actually online or not. 9025 */ 9026 if (lun != NULL) 9027 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9028 lun->be_lun->lun_type; 9029 else 9030 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9031 9032 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9033 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9034#ifdef CTL_USE_BACKEND_SN 9035 /* 9036 * If we don't have a LUN, we just leave the serial number as 9037 * all spaces. 9038 */ 9039 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9040 if (lun != NULL) { 9041 strncpy((char *)sn_ptr->serial_num, 9042 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9043 } 9044#else 9045 /* 9046 * Note that we're using a non-unique serial number here, 9047 */ 9048 snprintf(tmpstr, sizeof(tmpstr), "MYSERIALNUMIS000"); 9049 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9050 strncpy(sn_ptr->serial_num, tmpstr, ctl_min(CTL_SN_LEN, 9051 ctl_min(sizeof(tmpstr), sizeof(*sn_ptr) - 4))); 9052#endif 9053 ctsio->scsi_status = SCSI_STATUS_OK; 9054 9055 ctsio->be_move_done = ctl_config_move_done; 9056 ctl_datamove((union ctl_io *)ctsio); 9057 9058 return (CTL_RETVAL_COMPLETE); 9059} 9060 9061 9062static int 9063ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9064{ 9065 struct scsi_vpd_device_id *devid_ptr; 9066 struct scsi_vpd_id_descriptor *desc, *desc1; 9067 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9068 struct scsi_vpd_id_t10 *t10id; 9069 struct ctl_softc *ctl_softc; 9070 struct ctl_lun *lun; 9071 struct ctl_frontend *fe; 9072#ifndef CTL_USE_BACKEND_SN 9073 char tmpstr[32]; 9074#endif /* CTL_USE_BACKEND_SN */ 9075 int devid_len; 9076 9077 ctl_softc = control_softc; 9078 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9079 9080 devid_len = sizeof(struct scsi_vpd_device_id) + 9081 sizeof(struct scsi_vpd_id_descriptor) + 9082 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 9083 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9084 sizeof(struct scsi_vpd_id_descriptor) + 9085 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9086 sizeof(struct scsi_vpd_id_descriptor) + 9087 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9088 9089 /* XXX KDM which malloc flags here ?? */ 9090 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK); 9091 if (ctsio->kern_data_ptr == NULL) { 9092 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9093 ctsio->scsi_status = SCSI_STATUS_BUSY; 9094 ctl_done((union ctl_io *)ctsio); 9095 return (CTL_RETVAL_COMPLETE); 9096 } 9097 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9098 ctsio->kern_sg_entries = 0; 9099 9100 if (devid_len < alloc_len) { 9101 ctsio->residual = alloc_len - devid_len; 9102 ctsio->kern_data_len = devid_len; 9103 ctsio->kern_total_len = devid_len; 9104 } else { 9105 ctsio->residual = 0; 9106 ctsio->kern_data_len = alloc_len; 9107 ctsio->kern_total_len = alloc_len; 9108 } 9109 ctsio->kern_data_resid = 0; 9110 ctsio->kern_rel_offset = 0; 9111 ctsio->kern_sg_entries = 0; 9112 9113 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9114 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9115 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9116 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 9117 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9118 CTL_WWPN_LEN); 9119 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9120 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9121 memset(devid_ptr, 0, devid_len); 9122 9123 /* 9124 * The control device is always connected. The disk device, on the 9125 * other hand, may not be online all the time. 9126 */ 9127 if (lun != NULL) 9128 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9129 lun->be_lun->lun_type; 9130 else 9131 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9132 9133 devid_ptr->page_code = SVPD_DEVICE_ID; 9134 9135 scsi_ulto2b(devid_len - 4, devid_ptr->length); 9136 9137 mtx_lock(&ctl_softc->ctl_lock); 9138 9139 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9140 9141 /* 9142 * For Fibre channel, 9143 */ 9144 if (fe->port_type == CTL_PORT_FC) 9145 { 9146 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9147 SVPD_ID_CODESET_ASCII; 9148 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9149 SVPD_ID_CODESET_BINARY; 9150 } 9151 else 9152 { 9153 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9154 SVPD_ID_CODESET_ASCII; 9155 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9156 SVPD_ID_CODESET_BINARY; 9157 } 9158 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9159 mtx_unlock(&ctl_softc->ctl_lock); 9160 9161 /* 9162 * We're using a LUN association here. i.e., this device ID is a 9163 * per-LUN identifier. 9164 */ 9165 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9166 desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 9167 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9168 9169 /* 9170 * desc1 is for the WWPN which is a port asscociation. 9171 */ 9172 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9173 desc1->length = CTL_WWPN_LEN; 9174 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9175 /* For testing just create the WWPN */ 9176#if 0 9177 ddb_GetWWNN((char *)desc1->identifier); 9178 9179 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9180 /* This is so Copancontrol will return something sane */ 9181 if (ctsio->io_hdr.nexus.targ_port!=0 && 9182 ctsio->io_hdr.nexus.targ_port!=8) 9183 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9184 else 9185 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9186#endif 9187 9188 be64enc(desc1->identifier, fe->wwpn); 9189 9190 /* 9191 * desc2 is for the Relative Target Port(type 4h) identifier 9192 */ 9193 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9194 | SVPD_ID_TYPE_RELTARG; 9195 desc2->length = 4; 9196//#if 0 9197 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9198 /* This is so Copancontrol will return something sane */ 9199 if (ctsio->io_hdr.nexus.targ_port!=0 && 9200 ctsio->io_hdr.nexus.targ_port!=8) 9201 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9202 else 9203 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9204//#endif 9205 9206 /* 9207 * desc3 is for the Target Port Group(type 5h) identifier 9208 */ 9209 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9210 | SVPD_ID_TYPE_TPORTGRP; 9211 desc3->length = 4; 9212 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9213 desc3->identifier[3] = 1; 9214 else 9215 desc3->identifier[3] = 2; 9216 9217#ifdef CTL_USE_BACKEND_SN 9218 /* 9219 * If we've actually got a backend, copy the device id from the 9220 * per-LUN data. Otherwise, set it to all spaces. 9221 */ 9222 if (lun != NULL) { 9223 /* 9224 * Copy the backend's LUN ID. 9225 */ 9226 strncpy((char *)t10id->vendor_spec_id, 9227 (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 9228 } else { 9229 /* 9230 * No backend, set this to spaces. 9231 */ 9232 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 9233 } 9234#else 9235 snprintf(tmpstr, sizeof(tmpstr), "MYDEVICEIDIS%4d", 9236 (lun != NULL) ? (int)lun->lun : 0); 9237 strncpy(t10id->vendor_spec_id, tmpstr, ctl_min(CTL_DEVID_LEN, 9238 sizeof(tmpstr))); 9239#endif 9240 9241 ctsio->scsi_status = SCSI_STATUS_OK; 9242 9243 ctsio->be_move_done = ctl_config_move_done; 9244 ctl_datamove((union ctl_io *)ctsio); 9245 9246 return (CTL_RETVAL_COMPLETE); 9247} 9248 9249static int 9250ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9251{ 9252 struct scsi_inquiry *cdb; 9253 int alloc_len, retval; 9254 9255 cdb = (struct scsi_inquiry *)ctsio->cdb; 9256 9257 retval = CTL_RETVAL_COMPLETE; 9258 9259 alloc_len = scsi_2btoul(cdb->length); 9260 9261 switch (cdb->page_code) { 9262 case SVPD_SUPPORTED_PAGES: 9263 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9264 break; 9265 case SVPD_UNIT_SERIAL_NUMBER: 9266 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9267 break; 9268 case SVPD_DEVICE_ID: 9269 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9270 break; 9271 default: 9272 ctl_set_invalid_field(ctsio, 9273 /*sks_valid*/ 1, 9274 /*command*/ 1, 9275 /*field*/ 2, 9276 /*bit_valid*/ 0, 9277 /*bit*/ 0); 9278 ctl_done((union ctl_io *)ctsio); 9279 retval = CTL_RETVAL_COMPLETE; 9280 break; 9281 } 9282 9283 return (retval); 9284} 9285 9286static int 9287ctl_inquiry_std(struct ctl_scsiio *ctsio) 9288{ 9289 struct scsi_inquiry_data *inq_ptr; 9290 struct scsi_inquiry *cdb; 9291 struct ctl_softc *ctl_softc; 9292 struct ctl_lun *lun; 9293 uint32_t alloc_len; 9294 int is_fc; 9295 9296 ctl_softc = control_softc; 9297 9298 /* 9299 * Figure out whether we're talking to a Fibre Channel port or not. 9300 * We treat the ioctl front end, and any SCSI adapters, as packetized 9301 * SCSI front ends. 9302 */ 9303 mtx_lock(&ctl_softc->ctl_lock); 9304 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9305 CTL_PORT_FC) 9306 is_fc = 0; 9307 else 9308 is_fc = 1; 9309 mtx_unlock(&ctl_softc->ctl_lock); 9310 9311 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9312 cdb = (struct scsi_inquiry *)ctsio->cdb; 9313 alloc_len = scsi_2btoul(cdb->length); 9314 9315 /* 9316 * We malloc the full inquiry data size here and fill it 9317 * in. If the user only asks for less, we'll give him 9318 * that much. 9319 */ 9320 /* XXX KDM what malloc flags should we use here?? */ 9321 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK); 9322 if (ctsio->kern_data_ptr == NULL) { 9323 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9324 ctsio->scsi_status = SCSI_STATUS_BUSY; 9325 ctl_done((union ctl_io *)ctsio); 9326 return (CTL_RETVAL_COMPLETE); 9327 } 9328 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9329 ctsio->kern_sg_entries = 0; 9330 ctsio->kern_data_resid = 0; 9331 ctsio->kern_rel_offset = 0; 9332 9333 if (sizeof(*inq_ptr) < alloc_len) { 9334 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9335 ctsio->kern_data_len = sizeof(*inq_ptr); 9336 ctsio->kern_total_len = sizeof(*inq_ptr); 9337 } else { 9338 ctsio->residual = 0; 9339 ctsio->kern_data_len = alloc_len; 9340 ctsio->kern_total_len = alloc_len; 9341 } 9342 9343 memset(inq_ptr, 0, sizeof(*inq_ptr)); 9344 9345 /* 9346 * The control device is always connected. The disk device, on the 9347 * other hand, may not be online all the time. If we don't have a 9348 * LUN mapping, we'll just say it's offline. 9349 */ 9350 if (lun != NULL) 9351 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9352 lun->be_lun->lun_type; 9353 else 9354 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9355 9356 /* RMB in byte 2 is 0 */ 9357 inq_ptr->version = SCSI_REV_SPC3; 9358 9359 /* 9360 * According to SAM-3, even if a device only supports a single 9361 * level of LUN addressing, it should still set the HISUP bit: 9362 * 9363 * 4.9.1 Logical unit numbers overview 9364 * 9365 * All logical unit number formats described in this standard are 9366 * hierarchical in structure even when only a single level in that 9367 * hierarchy is used. The HISUP bit shall be set to one in the 9368 * standard INQUIRY data (see SPC-2) when any logical unit number 9369 * format described in this standard is used. Non-hierarchical 9370 * formats are outside the scope of this standard. 9371 * 9372 * Therefore we set the HiSup bit here. 9373 * 9374 * The reponse format is 2, per SPC-3. 9375 */ 9376 inq_ptr->response_format = SID_HiSup | 2; 9377 9378 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9379 CTL_DEBUG_PRINT(("additional_length = %d\n", 9380 inq_ptr->additional_length)); 9381 9382 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9383 /* 16 bit addressing */ 9384 if (is_fc == 0) 9385 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9386 /* XXX set the SID_MultiP bit here if we're actually going to 9387 respond on multiple ports */ 9388 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9389 9390 /* 16 bit data bus, synchronous transfers */ 9391 /* XXX these flags don't apply for FC */ 9392 if (is_fc == 0) 9393 inq_ptr->flags = SID_WBus16 | SID_Sync; 9394 /* 9395 * XXX KDM do we want to support tagged queueing on the control 9396 * device at all? 9397 */ 9398 if ((lun == NULL) 9399 || (lun->be_lun->lun_type != T_PROCESSOR)) 9400 inq_ptr->flags |= SID_CmdQue; 9401 /* 9402 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 9403 * We have 8 bytes for the vendor name, and 16 bytes for the device 9404 * name and 4 bytes for the revision. 9405 */ 9406 strncpy(inq_ptr->vendor, CTL_VENDOR, sizeof(inq_ptr->vendor)); 9407 if (lun == NULL) { 9408 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9409 } else { 9410 switch (lun->be_lun->lun_type) { 9411 case T_DIRECT: 9412 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9413 break; 9414 case T_PROCESSOR: 9415 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 9416 break; 9417 default: 9418 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 9419 break; 9420 } 9421 } 9422 9423 /* 9424 * XXX make this a macro somewhere so it automatically gets 9425 * incremented when we make changes. 9426 */ 9427 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 9428 9429 /* 9430 * For parallel SCSI, we support double transition and single 9431 * transition clocking. We also support QAS (Quick Arbitration 9432 * and Selection) and Information Unit transfers on both the 9433 * control and array devices. 9434 */ 9435 if (is_fc == 0) 9436 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 9437 SID_SPI_IUS; 9438 9439 /* SAM-3 */ 9440 scsi_ulto2b(0x0060, inq_ptr->version1); 9441 /* SPC-3 (no version claimed) XXX should we claim a version? */ 9442 scsi_ulto2b(0x0300, inq_ptr->version2); 9443 if (is_fc) { 9444 /* FCP-2 ANSI INCITS.350:2003 */ 9445 scsi_ulto2b(0x0917, inq_ptr->version3); 9446 } else { 9447 /* SPI-4 ANSI INCITS.362:200x */ 9448 scsi_ulto2b(0x0B56, inq_ptr->version3); 9449 } 9450 9451 if (lun == NULL) { 9452 /* SBC-2 (no version claimed) XXX should we claim a version? */ 9453 scsi_ulto2b(0x0320, inq_ptr->version4); 9454 } else { 9455 switch (lun->be_lun->lun_type) { 9456 case T_DIRECT: 9457 /* 9458 * SBC-2 (no version claimed) XXX should we claim a 9459 * version? 9460 */ 9461 scsi_ulto2b(0x0320, inq_ptr->version4); 9462 break; 9463 case T_PROCESSOR: 9464 default: 9465 break; 9466 } 9467 } 9468 sprintf((char *)inq_ptr->vendor_specific1, "Copyright (C) 2004, COPAN " 9469 "Systems, Inc. All Rights Reserved."); 9470 9471 ctsio->scsi_status = SCSI_STATUS_OK; 9472 if (ctsio->kern_data_len > 0) { 9473 ctsio->be_move_done = ctl_config_move_done; 9474 ctl_datamove((union ctl_io *)ctsio); 9475 } else { 9476 ctsio->io_hdr.status = CTL_SUCCESS; 9477 ctl_done((union ctl_io *)ctsio); 9478 } 9479 9480 return (CTL_RETVAL_COMPLETE); 9481} 9482 9483int 9484ctl_inquiry(struct ctl_scsiio *ctsio) 9485{ 9486 struct scsi_inquiry *cdb; 9487 int retval; 9488 9489 cdb = (struct scsi_inquiry *)ctsio->cdb; 9490 9491 retval = 0; 9492 9493 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 9494 9495 /* 9496 * Right now, we don't support the CmdDt inquiry information. 9497 * This would be nice to support in the future. When we do 9498 * support it, we should change this test so that it checks to make 9499 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 9500 */ 9501#ifdef notyet 9502 if (((cdb->byte2 & SI_EVPD) 9503 && (cdb->byte2 & SI_CMDDT))) 9504#endif 9505 if (cdb->byte2 & SI_CMDDT) { 9506 /* 9507 * Point to the SI_CMDDT bit. We might change this 9508 * when we support SI_CMDDT, but since both bits would be 9509 * "wrong", this should probably just stay as-is then. 9510 */ 9511 ctl_set_invalid_field(ctsio, 9512 /*sks_valid*/ 1, 9513 /*command*/ 1, 9514 /*field*/ 1, 9515 /*bit_valid*/ 1, 9516 /*bit*/ 1); 9517 ctl_done((union ctl_io *)ctsio); 9518 return (CTL_RETVAL_COMPLETE); 9519 } 9520 if (cdb->byte2 & SI_EVPD) 9521 retval = ctl_inquiry_evpd(ctsio); 9522#ifdef notyet 9523 else if (cdb->byte2 & SI_CMDDT) 9524 retval = ctl_inquiry_cmddt(ctsio); 9525#endif 9526 else 9527 retval = ctl_inquiry_std(ctsio); 9528 9529 return (retval); 9530} 9531 9532/* 9533 * For known CDB types, parse the LBA and length. 9534 */ 9535static int 9536ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 9537{ 9538 if (io->io_hdr.io_type != CTL_IO_SCSI) 9539 return (1); 9540 9541 switch (io->scsiio.cdb[0]) { 9542 case READ_6: 9543 case WRITE_6: { 9544 struct scsi_rw_6 *cdb; 9545 9546 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 9547 9548 *lba = scsi_3btoul(cdb->addr); 9549 /* only 5 bits are valid in the most significant address byte */ 9550 *lba &= 0x1fffff; 9551 *len = cdb->length; 9552 break; 9553 } 9554 case READ_10: 9555 case WRITE_10: { 9556 struct scsi_rw_10 *cdb; 9557 9558 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 9559 9560 *lba = scsi_4btoul(cdb->addr); 9561 *len = scsi_2btoul(cdb->length); 9562 break; 9563 } 9564 case WRITE_VERIFY_10: { 9565 struct scsi_write_verify_10 *cdb; 9566 9567 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 9568 9569 *lba = scsi_4btoul(cdb->addr); 9570 *len = scsi_2btoul(cdb->length); 9571 break; 9572 } 9573 case READ_12: 9574 case WRITE_12: { 9575 struct scsi_rw_12 *cdb; 9576 9577 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 9578 9579 *lba = scsi_4btoul(cdb->addr); 9580 *len = scsi_4btoul(cdb->length); 9581 break; 9582 } 9583 case WRITE_VERIFY_12: { 9584 struct scsi_write_verify_12 *cdb; 9585 9586 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 9587 9588 *lba = scsi_4btoul(cdb->addr); 9589 *len = scsi_4btoul(cdb->length); 9590 break; 9591 } 9592 case READ_16: 9593 case WRITE_16: { 9594 struct scsi_rw_16 *cdb; 9595 9596 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 9597 9598 *lba = scsi_8btou64(cdb->addr); 9599 *len = scsi_4btoul(cdb->length); 9600 break; 9601 } 9602 case WRITE_VERIFY_16: { 9603 struct scsi_write_verify_16 *cdb; 9604 9605 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 9606 9607 9608 *lba = scsi_8btou64(cdb->addr); 9609 *len = scsi_4btoul(cdb->length); 9610 break; 9611 } 9612 default: 9613 return (1); 9614 break; /* NOTREACHED */ 9615 } 9616 9617 return (0); 9618} 9619 9620static ctl_action 9621ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 9622{ 9623 uint64_t endlba1, endlba2; 9624 9625 endlba1 = lba1 + len1 - 1; 9626 endlba2 = lba2 + len2 - 1; 9627 9628 if ((endlba1 < lba2) 9629 || (endlba2 < lba1)) 9630 return (CTL_ACTION_PASS); 9631 else 9632 return (CTL_ACTION_BLOCK); 9633} 9634 9635static ctl_action 9636ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 9637{ 9638 uint64_t lba1, lba2; 9639 uint32_t len1, len2; 9640 int retval; 9641 9642 retval = ctl_get_lba_len(io1, &lba1, &len1); 9643 if (retval != 0) 9644 return (CTL_ACTION_ERROR); 9645 9646 retval = ctl_get_lba_len(io2, &lba2, &len2); 9647 if (retval != 0) 9648 return (CTL_ACTION_ERROR); 9649 9650 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 9651} 9652 9653static ctl_action 9654ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 9655{ 9656 struct ctl_cmd_entry *pending_entry, *ooa_entry; 9657 ctl_serialize_action *serialize_row; 9658 9659 /* 9660 * The initiator attempted multiple untagged commands at the same 9661 * time. Can't do that. 9662 */ 9663 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9664 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9665 && ((pending_io->io_hdr.nexus.targ_port == 9666 ooa_io->io_hdr.nexus.targ_port) 9667 && (pending_io->io_hdr.nexus.initid.id == 9668 ooa_io->io_hdr.nexus.initid.id)) 9669 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9670 return (CTL_ACTION_OVERLAP); 9671 9672 /* 9673 * The initiator attempted to send multiple tagged commands with 9674 * the same ID. (It's fine if different initiators have the same 9675 * tag ID.) 9676 * 9677 * Even if all of those conditions are true, we don't kill the I/O 9678 * if the command ahead of us has been aborted. We won't end up 9679 * sending it to the FETD, and it's perfectly legal to resend a 9680 * command with the same tag number as long as the previous 9681 * instance of this tag number has been aborted somehow. 9682 */ 9683 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9684 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 9685 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 9686 && ((pending_io->io_hdr.nexus.targ_port == 9687 ooa_io->io_hdr.nexus.targ_port) 9688 && (pending_io->io_hdr.nexus.initid.id == 9689 ooa_io->io_hdr.nexus.initid.id)) 9690 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 9691 return (CTL_ACTION_OVERLAP_TAG); 9692 9693 /* 9694 * If we get a head of queue tag, SAM-3 says that we should 9695 * immediately execute it. 9696 * 9697 * What happens if this command would normally block for some other 9698 * reason? e.g. a request sense with a head of queue tag 9699 * immediately after a write. Normally that would block, but this 9700 * will result in its getting executed immediately... 9701 * 9702 * We currently return "pass" instead of "skip", so we'll end up 9703 * going through the rest of the queue to check for overlapped tags. 9704 * 9705 * XXX KDM check for other types of blockage first?? 9706 */ 9707 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9708 return (CTL_ACTION_PASS); 9709 9710 /* 9711 * Ordered tags have to block until all items ahead of them 9712 * have completed. If we get called with an ordered tag, we always 9713 * block, if something else is ahead of us in the queue. 9714 */ 9715 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 9716 return (CTL_ACTION_BLOCK); 9717 9718 /* 9719 * Simple tags get blocked until all head of queue and ordered tags 9720 * ahead of them have completed. I'm lumping untagged commands in 9721 * with simple tags here. XXX KDM is that the right thing to do? 9722 */ 9723 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 9724 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 9725 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 9726 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 9727 return (CTL_ACTION_BLOCK); 9728 9729 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 9730 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 9731 9732 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 9733 9734 switch (serialize_row[pending_entry->seridx]) { 9735 case CTL_SER_BLOCK: 9736 return (CTL_ACTION_BLOCK); 9737 break; /* NOTREACHED */ 9738 case CTL_SER_EXTENT: 9739 return (ctl_extent_check(pending_io, ooa_io)); 9740 break; /* NOTREACHED */ 9741 case CTL_SER_PASS: 9742 return (CTL_ACTION_PASS); 9743 break; /* NOTREACHED */ 9744 case CTL_SER_SKIP: 9745 return (CTL_ACTION_SKIP); 9746 break; 9747 default: 9748 panic("invalid serialization value %d", 9749 serialize_row[pending_entry->seridx]); 9750 break; /* NOTREACHED */ 9751 } 9752 9753 return (CTL_ACTION_ERROR); 9754} 9755 9756/* 9757 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 9758 * Assumptions: 9759 * - caller holds ctl_lock 9760 * - pending_io is generally either incoming, or on the blocked queue 9761 * - starting I/O is the I/O we want to start the check with. 9762 */ 9763static ctl_action 9764ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 9765 union ctl_io *starting_io) 9766{ 9767 union ctl_io *ooa_io; 9768 ctl_action action; 9769 9770 /* 9771 * Run back along the OOA queue, starting with the current 9772 * blocked I/O and going through every I/O before it on the 9773 * queue. If starting_io is NULL, we'll just end up returning 9774 * CTL_ACTION_PASS. 9775 */ 9776 for (ooa_io = starting_io; ooa_io != NULL; 9777 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 9778 ooa_links)){ 9779 9780 /* 9781 * This routine just checks to see whether 9782 * cur_blocked is blocked by ooa_io, which is ahead 9783 * of it in the queue. It doesn't queue/dequeue 9784 * cur_blocked. 9785 */ 9786 action = ctl_check_for_blockage(pending_io, ooa_io); 9787 switch (action) { 9788 case CTL_ACTION_BLOCK: 9789 case CTL_ACTION_OVERLAP: 9790 case CTL_ACTION_OVERLAP_TAG: 9791 case CTL_ACTION_SKIP: 9792 case CTL_ACTION_ERROR: 9793 return (action); 9794 break; /* NOTREACHED */ 9795 case CTL_ACTION_PASS: 9796 break; 9797 default: 9798 panic("invalid action %d", action); 9799 break; /* NOTREACHED */ 9800 } 9801 } 9802 9803 return (CTL_ACTION_PASS); 9804} 9805 9806/* 9807 * Assumptions: 9808 * - An I/O has just completed, and has been removed from the per-LUN OOA 9809 * queue, so some items on the blocked queue may now be unblocked. 9810 * - The caller holds ctl_softc->ctl_lock 9811 */ 9812static int 9813ctl_check_blocked(struct ctl_lun *lun) 9814{ 9815 union ctl_io *cur_blocked, *next_blocked; 9816 9817 /* 9818 * Run forward from the head of the blocked queue, checking each 9819 * entry against the I/Os prior to it on the OOA queue to see if 9820 * there is still any blockage. 9821 * 9822 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 9823 * with our removing a variable on it while it is traversing the 9824 * list. 9825 */ 9826 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 9827 cur_blocked != NULL; cur_blocked = next_blocked) { 9828 union ctl_io *prev_ooa; 9829 ctl_action action; 9830 9831 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 9832 blocked_links); 9833 9834 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 9835 ctl_ooaq, ooa_links); 9836 9837 /* 9838 * If cur_blocked happens to be the first item in the OOA 9839 * queue now, prev_ooa will be NULL, and the action 9840 * returned will just be CTL_ACTION_PASS. 9841 */ 9842 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 9843 9844 switch (action) { 9845 case CTL_ACTION_BLOCK: 9846 /* Nothing to do here, still blocked */ 9847 break; 9848 case CTL_ACTION_OVERLAP: 9849 case CTL_ACTION_OVERLAP_TAG: 9850 /* 9851 * This shouldn't happen! In theory we've already 9852 * checked this command for overlap... 9853 */ 9854 break; 9855 case CTL_ACTION_PASS: 9856 case CTL_ACTION_SKIP: { 9857 struct ctl_softc *softc; 9858 struct ctl_cmd_entry *entry; 9859 uint32_t initidx; 9860 uint8_t opcode; 9861 int isc_retval; 9862 9863 /* 9864 * The skip case shouldn't happen, this transaction 9865 * should have never made it onto the blocked queue. 9866 */ 9867 /* 9868 * This I/O is no longer blocked, we can remove it 9869 * from the blocked queue. Since this is a TAILQ 9870 * (doubly linked list), we can do O(1) removals 9871 * from any place on the list. 9872 */ 9873 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 9874 blocked_links); 9875 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 9876 9877 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 9878 /* 9879 * Need to send IO back to original side to 9880 * run 9881 */ 9882 union ctl_ha_msg msg_info; 9883 9884 msg_info.hdr.original_sc = 9885 cur_blocked->io_hdr.original_sc; 9886 msg_info.hdr.serializing_sc = cur_blocked; 9887 msg_info.hdr.msg_type = CTL_MSG_R2R; 9888 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 9889 &msg_info, sizeof(msg_info), 0)) > 9890 CTL_HA_STATUS_SUCCESS) { 9891 printf("CTL:Check Blocked error from " 9892 "ctl_ha_msg_send %d\n", 9893 isc_retval); 9894 } 9895 break; 9896 } 9897 opcode = cur_blocked->scsiio.cdb[0]; 9898 entry = &ctl_cmd_table[opcode]; 9899 softc = control_softc; 9900 9901 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 9902 9903 /* 9904 * Check this I/O for LUN state changes that may 9905 * have happened while this command was blocked. 9906 * The LUN state may have been changed by a command 9907 * ahead of us in the queue, so we need to re-check 9908 * for any states that can be caused by SCSI 9909 * commands. 9910 */ 9911 if (ctl_scsiio_lun_check(softc, lun, entry, 9912 &cur_blocked->scsiio) == 0) { 9913 cur_blocked->io_hdr.flags |= 9914 CTL_FLAG_IS_WAS_ON_RTR; 9915 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 9916 &cur_blocked->io_hdr, links); 9917 /* 9918 * In the non CTL_DONE_THREAD case, we need 9919 * to wake up the work thread here. When 9920 * we're processing completed requests from 9921 * the work thread context, we'll pop back 9922 * around and end up pulling things off the 9923 * RtR queue. When we aren't processing 9924 * things from the work thread context, 9925 * though, we won't ever check the RtR queue. 9926 * So we need to wake up the thread to clear 9927 * things off the queue. Otherwise this 9928 * transaction will just sit on the RtR queue 9929 * until a new I/O comes in. (Which may or 9930 * may not happen...) 9931 */ 9932#ifndef CTL_DONE_THREAD 9933 ctl_wakeup_thread(); 9934#endif 9935 } else 9936 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 9937 break; 9938 } 9939 default: 9940 /* 9941 * This probably shouldn't happen -- we shouldn't 9942 * get CTL_ACTION_ERROR, or anything else. 9943 */ 9944 break; 9945 } 9946 } 9947 9948 return (CTL_RETVAL_COMPLETE); 9949} 9950 9951/* 9952 * This routine (with one exception) checks LUN flags that can be set by 9953 * commands ahead of us in the OOA queue. These flags have to be checked 9954 * when a command initially comes in, and when we pull a command off the 9955 * blocked queue and are preparing to execute it. The reason we have to 9956 * check these flags for commands on the blocked queue is that the LUN 9957 * state may have been changed by a command ahead of us while we're on the 9958 * blocked queue. 9959 * 9960 * Ordering is somewhat important with these checks, so please pay 9961 * careful attention to the placement of any new checks. 9962 */ 9963static int 9964ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 9965 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 9966{ 9967 int retval; 9968 9969 retval = 0; 9970 9971 /* 9972 * If this shelf is a secondary shelf controller, we have to reject 9973 * any media access commands. 9974 */ 9975#if 0 9976 /* No longer needed for HA */ 9977 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 9978 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 9979 ctl_set_lun_standby(ctsio); 9980 retval = 1; 9981 goto bailout; 9982 } 9983#endif 9984 9985 /* 9986 * Check for a reservation conflict. If this command isn't allowed 9987 * even on reserved LUNs, and if this initiator isn't the one who 9988 * reserved us, reject the command with a reservation conflict. 9989 */ 9990 if ((lun->flags & CTL_LUN_RESERVED) 9991 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 9992 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 9993 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 9994 || (ctsio->io_hdr.nexus.targ_target.id != 9995 lun->rsv_nexus.targ_target.id)) { 9996 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 9997 ctsio->io_hdr.status = CTL_SCSI_ERROR; 9998 retval = 1; 9999 goto bailout; 10000 } 10001 } 10002 10003 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10004 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10005 uint32_t residx; 10006 10007 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10008 /* 10009 * if we aren't registered or it's a res holder type 10010 * reservation and this isn't the res holder then set a 10011 * conflict. 10012 * NOTE: Commands which might be allowed on write exclusive 10013 * type reservations are checked in the particular command 10014 * for a conflict. Read and SSU are the only ones. 10015 */ 10016 if (!lun->per_res[residx].registered 10017 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10018 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10019 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10020 retval = 1; 10021 goto bailout; 10022 } 10023 10024 } 10025 10026 if ((lun->flags & CTL_LUN_OFFLINE) 10027 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10028 ctl_set_lun_not_ready(ctsio); 10029 retval = 1; 10030 goto bailout; 10031 } 10032 10033 /* 10034 * If the LUN is stopped, see if this particular command is allowed 10035 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10036 */ 10037 if ((lun->flags & CTL_LUN_STOPPED) 10038 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10039 /* "Logical unit not ready, initializing cmd. required" */ 10040 ctl_set_lun_stopped(ctsio); 10041 retval = 1; 10042 goto bailout; 10043 } 10044 10045 if ((lun->flags & CTL_LUN_INOPERABLE) 10046 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10047 /* "Medium format corrupted" */ 10048 ctl_set_medium_format_corrupted(ctsio); 10049 retval = 1; 10050 goto bailout; 10051 } 10052 10053bailout: 10054 return (retval); 10055 10056} 10057 10058static void 10059ctl_failover_io(union ctl_io *io, int have_lock) 10060{ 10061 ctl_set_busy(&io->scsiio); 10062 ctl_done_lock(io, have_lock); 10063} 10064 10065static void 10066ctl_failover(void) 10067{ 10068 struct ctl_lun *lun; 10069 struct ctl_softc *ctl_softc; 10070 union ctl_io *next_io, *pending_io; 10071 union ctl_io *io; 10072 int lun_idx; 10073 int i; 10074 10075 ctl_softc = control_softc; 10076 10077 mtx_lock(&ctl_softc->ctl_lock); 10078 /* 10079 * Remove any cmds from the other SC from the rtr queue. These 10080 * will obviously only be for LUNs for which we're the primary. 10081 * We can't send status or get/send data for these commands. 10082 * Since they haven't been executed yet, we can just remove them. 10083 * We'll either abort them or delete them below, depending on 10084 * which HA mode we're in. 10085 */ 10086 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10087 io != NULL; io = next_io) { 10088 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10089 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10090 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10091 ctl_io_hdr, links); 10092 } 10093 10094 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10095 lun = ctl_softc->ctl_luns[lun_idx]; 10096 if (lun==NULL) 10097 continue; 10098 10099 /* 10100 * Processor LUNs are primary on both sides. 10101 * XXX will this always be true? 10102 */ 10103 if (lun->be_lun->lun_type == T_PROCESSOR) 10104 continue; 10105 10106 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10107 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10108 printf("FAILOVER: primary lun %d\n", lun_idx); 10109 /* 10110 * Remove all commands from the other SC. First from the 10111 * blocked queue then from the ooa queue. Once we have 10112 * removed them. Call ctl_check_blocked to see if there 10113 * is anything that can run. 10114 */ 10115 for (io = (union ctl_io *)TAILQ_FIRST( 10116 &lun->blocked_queue); io != NULL; io = next_io) { 10117 10118 next_io = (union ctl_io *)TAILQ_NEXT( 10119 &io->io_hdr, blocked_links); 10120 10121 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10122 TAILQ_REMOVE(&lun->blocked_queue, 10123 &io->io_hdr,blocked_links); 10124 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10125 TAILQ_REMOVE(&lun->ooa_queue, 10126 &io->io_hdr, ooa_links); 10127 10128 ctl_free_io_internal(io, 1); 10129 } 10130 } 10131 10132 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10133 io != NULL; io = next_io) { 10134 10135 next_io = (union ctl_io *)TAILQ_NEXT( 10136 &io->io_hdr, ooa_links); 10137 10138 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10139 10140 TAILQ_REMOVE(&lun->ooa_queue, 10141 &io->io_hdr, 10142 ooa_links); 10143 10144 ctl_free_io_internal(io, 1); 10145 } 10146 } 10147 ctl_check_blocked(lun); 10148 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10149 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10150 10151 printf("FAILOVER: primary lun %d\n", lun_idx); 10152 /* 10153 * Abort all commands from the other SC. We can't 10154 * send status back for them now. These should get 10155 * cleaned up when they are completed or come out 10156 * for a datamove operation. 10157 */ 10158 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10159 io != NULL; io = next_io) { 10160 next_io = (union ctl_io *)TAILQ_NEXT( 10161 &io->io_hdr, ooa_links); 10162 10163 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10164 io->io_hdr.flags |= CTL_FLAG_ABORT; 10165 } 10166 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10167 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10168 10169 printf("FAILOVER: secondary lun %d\n", lun_idx); 10170 10171 lun->flags |= CTL_LUN_PRIMARY_SC; 10172 10173 /* 10174 * We send all I/O that was sent to this controller 10175 * and redirected to the other side back with 10176 * busy status, and have the initiator retry it. 10177 * Figuring out how much data has been transferred, 10178 * etc. and picking up where we left off would be 10179 * very tricky. 10180 * 10181 * XXX KDM need to remove I/O from the blocked 10182 * queue as well! 10183 */ 10184 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10185 &lun->ooa_queue); pending_io != NULL; 10186 pending_io = next_io) { 10187 10188 next_io = (union ctl_io *)TAILQ_NEXT( 10189 &pending_io->io_hdr, ooa_links); 10190 10191 pending_io->io_hdr.flags &= 10192 ~CTL_FLAG_SENT_2OTHER_SC; 10193 10194 if (pending_io->io_hdr.flags & 10195 CTL_FLAG_IO_ACTIVE) { 10196 pending_io->io_hdr.flags |= 10197 CTL_FLAG_FAILOVER; 10198 } else { 10199 ctl_set_busy(&pending_io->scsiio); 10200 ctl_done_lock(pending_io, 10201 /*have_lock*/1); 10202 } 10203 } 10204 10205 /* 10206 * Build Unit Attention 10207 */ 10208 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10209 lun->pending_sense[i].ua_pending |= 10210 CTL_UA_ASYM_ACC_CHANGE; 10211 } 10212 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10213 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10214 printf("FAILOVER: secondary lun %d\n", lun_idx); 10215 /* 10216 * if the first io on the OOA is not on the RtR queue 10217 * add it. 10218 */ 10219 lun->flags |= CTL_LUN_PRIMARY_SC; 10220 10221 pending_io = (union ctl_io *)TAILQ_FIRST( 10222 &lun->ooa_queue); 10223 if (pending_io==NULL) { 10224 printf("Nothing on OOA queue\n"); 10225 continue; 10226 } 10227 10228 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10229 if ((pending_io->io_hdr.flags & 10230 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10231 pending_io->io_hdr.flags |= 10232 CTL_FLAG_IS_WAS_ON_RTR; 10233 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 10234 &pending_io->io_hdr, links); 10235 } 10236#if 0 10237 else 10238 { 10239 printf("Tag 0x%04x is running\n", 10240 pending_io->scsiio.tag_num); 10241 } 10242#endif 10243 10244 next_io = (union ctl_io *)TAILQ_NEXT( 10245 &pending_io->io_hdr, ooa_links); 10246 for (pending_io=next_io; pending_io != NULL; 10247 pending_io = next_io) { 10248 pending_io->io_hdr.flags &= 10249 ~CTL_FLAG_SENT_2OTHER_SC; 10250 next_io = (union ctl_io *)TAILQ_NEXT( 10251 &pending_io->io_hdr, ooa_links); 10252 if (pending_io->io_hdr.flags & 10253 CTL_FLAG_IS_WAS_ON_RTR) { 10254#if 0 10255 printf("Tag 0x%04x is running\n", 10256 pending_io->scsiio.tag_num); 10257#endif 10258 continue; 10259 } 10260 10261 switch (ctl_check_ooa(lun, pending_io, 10262 (union ctl_io *)TAILQ_PREV( 10263 &pending_io->io_hdr, ctl_ooaq, 10264 ooa_links))) { 10265 10266 case CTL_ACTION_BLOCK: 10267 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10268 &pending_io->io_hdr, 10269 blocked_links); 10270 pending_io->io_hdr.flags |= 10271 CTL_FLAG_BLOCKED; 10272 break; 10273 case CTL_ACTION_PASS: 10274 case CTL_ACTION_SKIP: 10275 pending_io->io_hdr.flags |= 10276 CTL_FLAG_IS_WAS_ON_RTR; 10277 STAILQ_INSERT_TAIL( 10278 &ctl_softc->rtr_queue, 10279 &pending_io->io_hdr, links); 10280 break; 10281 case CTL_ACTION_OVERLAP: 10282 ctl_set_overlapped_cmd( 10283 (struct ctl_scsiio *)pending_io); 10284 ctl_done_lock(pending_io, 10285 /*have_lock*/ 1); 10286 break; 10287 case CTL_ACTION_OVERLAP_TAG: 10288 ctl_set_overlapped_tag( 10289 (struct ctl_scsiio *)pending_io, 10290 pending_io->scsiio.tag_num & 0xff); 10291 ctl_done_lock(pending_io, 10292 /*have_lock*/ 1); 10293 break; 10294 case CTL_ACTION_ERROR: 10295 default: 10296 ctl_set_internal_failure( 10297 (struct ctl_scsiio *)pending_io, 10298 0, // sks_valid 10299 0); //retry count 10300 ctl_done_lock(pending_io, 10301 /*have_lock*/ 1); 10302 break; 10303 } 10304 } 10305 10306 /* 10307 * Build Unit Attention 10308 */ 10309 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10310 lun->pending_sense[i].ua_pending |= 10311 CTL_UA_ASYM_ACC_CHANGE; 10312 } 10313 } else { 10314 panic("Unhandled HA mode failover, LUN flags = %#x, " 10315 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10316 } 10317 } 10318 ctl_pause_rtr = 0; 10319 mtx_unlock(&ctl_softc->ctl_lock); 10320} 10321 10322static int 10323ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10324{ 10325 struct ctl_lun *lun; 10326 struct ctl_cmd_entry *entry; 10327 uint8_t opcode; 10328 uint32_t initidx; 10329 int retval; 10330 10331 retval = 0; 10332 10333 lun = NULL; 10334 10335 opcode = ctsio->cdb[0]; 10336 10337 mtx_lock(&ctl_softc->ctl_lock); 10338 10339 if ((ctsio->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 10340 && (ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun] != NULL)) { 10341 lun = ctl_softc->ctl_luns[ctsio->io_hdr.nexus.targ_lun]; 10342 /* 10343 * If the LUN is invalid, pretend that it doesn't exist. 10344 * It will go away as soon as all pending I/O has been 10345 * completed. 10346 */ 10347 if (lun->flags & CTL_LUN_DISABLED) { 10348 lun = NULL; 10349 } else { 10350 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 10351 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 10352 lun->be_lun; 10353 if (lun->be_lun->lun_type == T_PROCESSOR) { 10354 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 10355 } 10356 } 10357 } else { 10358 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 10359 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 10360 } 10361 10362 entry = &ctl_cmd_table[opcode]; 10363 10364 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 10365 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 10366 10367 /* 10368 * Check to see whether we can send this command to LUNs that don't 10369 * exist. This should pretty much only be the case for inquiry 10370 * and request sense. Further checks, below, really require having 10371 * a LUN, so we can't really check the command anymore. Just put 10372 * it on the rtr queue. 10373 */ 10374 if (lun == NULL) { 10375 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10376 goto queue_rtr; 10377 10378 ctl_set_unsupported_lun(ctsio); 10379 mtx_unlock(&ctl_softc->ctl_lock); 10380 ctl_done((union ctl_io *)ctsio); 10381 goto bailout; 10382 } else { 10383 /* 10384 * Every I/O goes into the OOA queue for a particular LUN, and 10385 * stays there until completion. 10386 */ 10387 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 10388 10389 /* 10390 * Make sure we support this particular command on this LUN. 10391 * e.g., we don't support writes to the control LUN. 10392 */ 10393 switch (lun->be_lun->lun_type) { 10394 case T_PROCESSOR: 10395 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 10396 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10397 == 0)) { 10398 ctl_set_invalid_opcode(ctsio); 10399 mtx_unlock(&ctl_softc->ctl_lock); 10400 ctl_done((union ctl_io *)ctsio); 10401 goto bailout; 10402 } 10403 break; 10404 case T_DIRECT: 10405 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 10406 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10407 == 0)){ 10408 ctl_set_invalid_opcode(ctsio); 10409 mtx_unlock(&ctl_softc->ctl_lock); 10410 ctl_done((union ctl_io *)ctsio); 10411 goto bailout; 10412 } 10413 break; 10414 default: 10415 printf("Unsupported CTL LUN type %d\n", 10416 lun->be_lun->lun_type); 10417 panic("Unsupported CTL LUN type %d\n", 10418 lun->be_lun->lun_type); 10419 break; /* NOTREACHED */ 10420 } 10421 } 10422 10423 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 10424 10425 /* 10426 * If we've got a request sense, it'll clear the contingent 10427 * allegiance condition. Otherwise, if we have a CA condition for 10428 * this initiator, clear it, because it sent down a command other 10429 * than request sense. 10430 */ 10431 if ((opcode != REQUEST_SENSE) 10432 && (ctl_is_set(lun->have_ca, initidx))) 10433 ctl_clear_mask(lun->have_ca, initidx); 10434 10435 /* 10436 * If the command has this flag set, it handles its own unit 10437 * attention reporting, we shouldn't do anything. Otherwise we 10438 * check for any pending unit attentions, and send them back to the 10439 * initiator. We only do this when a command initially comes in, 10440 * not when we pull it off the blocked queue. 10441 * 10442 * According to SAM-3, section 5.3.2, the order that things get 10443 * presented back to the host is basically unit attentions caused 10444 * by some sort of reset event, busy status, reservation conflicts 10445 * or task set full, and finally any other status. 10446 * 10447 * One issue here is that some of the unit attentions we report 10448 * don't fall into the "reset" category (e.g. "reported luns data 10449 * has changed"). So reporting it here, before the reservation 10450 * check, may be technically wrong. I guess the only thing to do 10451 * would be to check for and report the reset events here, and then 10452 * check for the other unit attention types after we check for a 10453 * reservation conflict. 10454 * 10455 * XXX KDM need to fix this 10456 */ 10457 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 10458 ctl_ua_type ua_type; 10459 10460 ua_type = lun->pending_sense[initidx].ua_pending; 10461 if (ua_type != CTL_UA_NONE) { 10462 ctl_sense_format sense_format; 10463 10464 if (lun != NULL) 10465 sense_format = (lun->flags & 10466 CTL_LUN_SENSE_DESC) ? CTL_SENSE_DESCRIPTOR : 10467 CTL_SENSE_FIXED; 10468 else 10469 sense_format = CTL_SENSE_FIXED; 10470 10471 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 10472 sense_format); 10473 if (ua_type != CTL_UA_NONE) { 10474 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 10475 ctsio->io_hdr.status = CTL_SCSI_ERROR | 10476 CTL_AUTOSENSE; 10477 ctsio->sense_len = SSD_FULL_SIZE; 10478 lun->pending_sense[initidx].ua_pending &= 10479 ~ua_type; 10480 mtx_unlock(&ctl_softc->ctl_lock); 10481 ctl_done((union ctl_io *)ctsio); 10482 goto bailout; 10483 } 10484 } 10485 } 10486 10487 10488 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 10489 mtx_unlock(&ctl_softc->ctl_lock); 10490 ctl_done((union ctl_io *)ctsio); 10491 goto bailout; 10492 } 10493 10494 /* 10495 * XXX CHD this is where we want to send IO to other side if 10496 * this LUN is secondary on this SC. We will need to make a copy 10497 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 10498 * the copy we send as FROM_OTHER. 10499 * We also need to stuff the address of the original IO so we can 10500 * find it easily. Something similar will need be done on the other 10501 * side so when we are done we can find the copy. 10502 */ 10503 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 10504 union ctl_ha_msg msg_info; 10505 int isc_retval; 10506 10507 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10508 10509 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 10510 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 10511#if 0 10512 printf("1. ctsio %p\n", ctsio); 10513#endif 10514 msg_info.hdr.serializing_sc = NULL; 10515 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 10516 msg_info.scsi.tag_num = ctsio->tag_num; 10517 msg_info.scsi.tag_type = ctsio->tag_type; 10518 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 10519 10520 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 10521 10522 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10523 (void *)&msg_info, sizeof(msg_info), 0)) > 10524 CTL_HA_STATUS_SUCCESS) { 10525 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 10526 isc_retval); 10527 printf("CTL:opcode is %x\n",opcode); 10528 } else { 10529#if 0 10530 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 10531#endif 10532 } 10533 10534 /* 10535 * XXX KDM this I/O is off the incoming queue, but hasn't 10536 * been inserted on any other queue. We may need to come 10537 * up with a holding queue while we wait for serialization 10538 * so that we have an idea of what we're waiting for from 10539 * the other side. 10540 */ 10541 goto bailout_unlock; 10542 } 10543 10544 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 10545 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 10546 ctl_ooaq, ooa_links))) { 10547 case CTL_ACTION_BLOCK: 10548 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 10549 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 10550 blocked_links); 10551 goto bailout_unlock; 10552 break; /* NOTREACHED */ 10553 case CTL_ACTION_PASS: 10554 case CTL_ACTION_SKIP: 10555 goto queue_rtr; 10556 break; /* NOTREACHED */ 10557 case CTL_ACTION_OVERLAP: 10558 ctl_set_overlapped_cmd(ctsio); 10559 mtx_unlock(&ctl_softc->ctl_lock); 10560 ctl_done((union ctl_io *)ctsio); 10561 goto bailout; 10562 break; /* NOTREACHED */ 10563 case CTL_ACTION_OVERLAP_TAG: 10564 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 10565 mtx_unlock(&ctl_softc->ctl_lock); 10566 ctl_done((union ctl_io *)ctsio); 10567 goto bailout; 10568 break; /* NOTREACHED */ 10569 case CTL_ACTION_ERROR: 10570 default: 10571 ctl_set_internal_failure(ctsio, 10572 /*sks_valid*/ 0, 10573 /*retry_count*/ 0); 10574 mtx_unlock(&ctl_softc->ctl_lock); 10575 ctl_done((union ctl_io *)ctsio); 10576 goto bailout; 10577 break; /* NOTREACHED */ 10578 } 10579 10580 goto bailout_unlock; 10581 10582queue_rtr: 10583 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 10584 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 10585 10586bailout_unlock: 10587 mtx_unlock(&ctl_softc->ctl_lock); 10588 10589bailout: 10590 return (retval); 10591} 10592 10593static int 10594ctl_scsiio(struct ctl_scsiio *ctsio) 10595{ 10596 int retval; 10597 struct ctl_cmd_entry *entry; 10598 10599 retval = CTL_RETVAL_COMPLETE; 10600 10601 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 10602 10603 entry = &ctl_cmd_table[ctsio->cdb[0]]; 10604 10605 /* 10606 * If this I/O has been aborted, just send it straight to 10607 * ctl_done() without executing it. 10608 */ 10609 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 10610 ctl_done((union ctl_io *)ctsio); 10611 goto bailout; 10612 } 10613 10614 /* 10615 * All the checks should have been handled by ctl_scsiio_precheck(). 10616 * We should be clear now to just execute the I/O. 10617 */ 10618 retval = entry->execute(ctsio); 10619 10620bailout: 10621 return (retval); 10622} 10623 10624/* 10625 * Since we only implement one target right now, a bus reset simply resets 10626 * our single target. 10627 */ 10628static int 10629ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 10630{ 10631 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 10632} 10633 10634static int 10635ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 10636 ctl_ua_type ua_type) 10637{ 10638 struct ctl_lun *lun; 10639 int retval; 10640 10641 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 10642 union ctl_ha_msg msg_info; 10643 10644 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 10645 msg_info.hdr.nexus = io->io_hdr.nexus; 10646 if (ua_type==CTL_UA_TARG_RESET) 10647 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 10648 else 10649 msg_info.task.task_action = CTL_TASK_BUS_RESET; 10650 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 10651 msg_info.hdr.original_sc = NULL; 10652 msg_info.hdr.serializing_sc = NULL; 10653 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10654 (void *)&msg_info, sizeof(msg_info), 0)) { 10655 } 10656 } 10657 retval = 0; 10658 10659 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 10660 retval += ctl_lun_reset(lun, io, ua_type); 10661 10662 return (retval); 10663} 10664 10665/* 10666 * The LUN should always be set. The I/O is optional, and is used to 10667 * distinguish between I/Os sent by this initiator, and by other 10668 * initiators. We set unit attention for initiators other than this one. 10669 * SAM-3 is vague on this point. It does say that a unit attention should 10670 * be established for other initiators when a LUN is reset (see section 10671 * 5.7.3), but it doesn't specifically say that the unit attention should 10672 * be established for this particular initiator when a LUN is reset. Here 10673 * is the relevant text, from SAM-3 rev 8: 10674 * 10675 * 5.7.2 When a SCSI initiator port aborts its own tasks 10676 * 10677 * When a SCSI initiator port causes its own task(s) to be aborted, no 10678 * notification that the task(s) have been aborted shall be returned to 10679 * the SCSI initiator port other than the completion response for the 10680 * command or task management function action that caused the task(s) to 10681 * be aborted and notification(s) associated with related effects of the 10682 * action (e.g., a reset unit attention condition). 10683 * 10684 * XXX KDM for now, we're setting unit attention for all initiators. 10685 */ 10686static int 10687ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 10688{ 10689 union ctl_io *xio; 10690#if 0 10691 uint32_t initindex; 10692#endif 10693 int i; 10694 10695 /* 10696 * Run through the OOA queue and abort each I/O. 10697 */ 10698#if 0 10699 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10700#endif 10701 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10702 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10703 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10704 } 10705 10706 /* 10707 * This version sets unit attention for every 10708 */ 10709#if 0 10710 initindex = ctl_get_initindex(&io->io_hdr.nexus); 10711 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10712 if (initindex == i) 10713 continue; 10714 lun->pending_sense[i].ua_pending |= ua_type; 10715 } 10716#endif 10717 10718 /* 10719 * A reset (any kind, really) clears reservations established with 10720 * RESERVE/RELEASE. It does not clear reservations established 10721 * with PERSISTENT RESERVE OUT, but we don't support that at the 10722 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 10723 * reservations made with the RESERVE/RELEASE commands, because 10724 * those commands are obsolete in SPC-3. 10725 */ 10726 lun->flags &= ~CTL_LUN_RESERVED; 10727 10728 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10729 ctl_clear_mask(lun->have_ca, i); 10730 lun->pending_sense[i].ua_pending |= ua_type; 10731 } 10732 10733 return (0); 10734} 10735 10736static int 10737ctl_abort_task(union ctl_io *io) 10738{ 10739 union ctl_io *xio; 10740 struct ctl_lun *lun; 10741 struct ctl_softc *ctl_softc; 10742#if 0 10743 struct sbuf sb; 10744 char printbuf[128]; 10745#endif 10746 int found; 10747 10748 ctl_softc = control_softc; 10749 found = 0; 10750 10751 /* 10752 * Look up the LUN. 10753 */ 10754 if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 10755 && (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL)) 10756 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 10757 else 10758 goto bailout; 10759 10760#if 0 10761 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 10762 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 10763#endif 10764 10765 /* 10766 * Run through the OOA queue and attempt to find the given I/O. 10767 * The target port, initiator ID, tag type and tag number have to 10768 * match the values that we got from the initiator. If we have an 10769 * untagged command to abort, simply abort the first untagged command 10770 * we come to. We only allow one untagged command at a time of course. 10771 */ 10772#if 0 10773 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 10774#endif 10775 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 10776 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 10777#if 0 10778 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 10779 10780 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 10781 lun->lun, xio->scsiio.tag_num, 10782 xio->scsiio.tag_type, 10783 (xio->io_hdr.blocked_links.tqe_prev 10784 == NULL) ? "" : " BLOCKED", 10785 (xio->io_hdr.flags & 10786 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 10787 (xio->io_hdr.flags & 10788 CTL_FLAG_ABORT) ? " ABORT" : ""), 10789 (xio->io_hdr.flags & 10790 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : ""); 10791 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 10792 sbuf_finish(&sb); 10793 printf("%s\n", sbuf_data(&sb)); 10794#endif 10795 10796 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 10797 && (xio->io_hdr.nexus.initid.id == 10798 io->io_hdr.nexus.initid.id)) { 10799 /* 10800 * If the abort says that the task is untagged, the 10801 * task in the queue must be untagged. Otherwise, 10802 * we just check to see whether the tag numbers 10803 * match. This is because the QLogic firmware 10804 * doesn't pass back the tag type in an abort 10805 * request. 10806 */ 10807#if 0 10808 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 10809 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 10810 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 10811#endif 10812 /* 10813 * XXX KDM we've got problems with FC, because it 10814 * doesn't send down a tag type with aborts. So we 10815 * can only really go by the tag number... 10816 * This may cause problems with parallel SCSI. 10817 * Need to figure that out!! 10818 */ 10819 if (xio->scsiio.tag_num == io->taskio.tag_num) { 10820 xio->io_hdr.flags |= CTL_FLAG_ABORT; 10821 found = 1; 10822 if ((io->io_hdr.flags & 10823 CTL_FLAG_FROM_OTHER_SC) == 0 && 10824 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 10825 union ctl_ha_msg msg_info; 10826 10827 io->io_hdr.flags |= 10828 CTL_FLAG_SENT_2OTHER_SC; 10829 msg_info.hdr.nexus = io->io_hdr.nexus; 10830 msg_info.task.task_action = 10831 CTL_TASK_ABORT_TASK; 10832 msg_info.task.tag_num = 10833 io->taskio.tag_num; 10834 msg_info.task.tag_type = 10835 io->taskio.tag_type; 10836 msg_info.hdr.msg_type = 10837 CTL_MSG_MANAGE_TASKS; 10838 msg_info.hdr.original_sc = NULL; 10839 msg_info.hdr.serializing_sc = NULL; 10840#if 0 10841 printf("Sent Abort to other side\n"); 10842#endif 10843 if (CTL_HA_STATUS_SUCCESS != 10844 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10845 (void *)&msg_info, 10846 sizeof(msg_info), 0)) { 10847 } 10848 } 10849#if 0 10850 printf("ctl_abort_task: found I/O to abort\n"); 10851#endif 10852 break; 10853 } 10854 } 10855 } 10856 10857bailout: 10858 10859 if (found == 0) { 10860 /* 10861 * This isn't really an error. It's entirely possible for 10862 * the abort and command completion to cross on the wire. 10863 * This is more of an informative/diagnostic error. 10864 */ 10865#if 0 10866 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 10867 "%d:%d:%d:%d tag %d type %d\n", 10868 io->io_hdr.nexus.initid.id, 10869 io->io_hdr.nexus.targ_port, 10870 io->io_hdr.nexus.targ_target.id, 10871 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 10872 io->taskio.tag_type); 10873#endif 10874 return (1); 10875 } else 10876 return (0); 10877} 10878 10879/* 10880 * Assumptions: caller holds ctl_softc->ctl_lock 10881 * 10882 * This routine cannot block! It must be callable from an interrupt 10883 * handler as well as from the work thread. 10884 */ 10885static void 10886ctl_run_task_queue(struct ctl_softc *ctl_softc) 10887{ 10888 union ctl_io *io, *next_io; 10889 10890 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 10891 10892 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 10893 io != NULL; io = next_io) { 10894 int retval; 10895 const char *task_desc; 10896 10897 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10898 10899 retval = 0; 10900 10901 switch (io->io_hdr.io_type) { 10902 case CTL_IO_TASK: { 10903 task_desc = ctl_scsi_task_string(&io->taskio); 10904 if (task_desc != NULL) { 10905#ifdef NEEDTOPORT 10906 csevent_log(CSC_CTL | CSC_SHELF_SW | 10907 CTL_TASK_REPORT, 10908 csevent_LogType_Trace, 10909 csevent_Severity_Information, 10910 csevent_AlertLevel_Green, 10911 csevent_FRU_Firmware, 10912 csevent_FRU_Unknown, 10913 "CTL: received task: %s",task_desc); 10914#endif 10915 } else { 10916#ifdef NEEDTOPORT 10917 csevent_log(CSC_CTL | CSC_SHELF_SW | 10918 CTL_TASK_REPORT, 10919 csevent_LogType_Trace, 10920 csevent_Severity_Information, 10921 csevent_AlertLevel_Green, 10922 csevent_FRU_Firmware, 10923 csevent_FRU_Unknown, 10924 "CTL: received unknown task " 10925 "type: %d (%#x)", 10926 io->taskio.task_action, 10927 io->taskio.task_action); 10928#endif 10929 } 10930 switch (io->taskio.task_action) { 10931 case CTL_TASK_ABORT_TASK: 10932 retval = ctl_abort_task(io); 10933 break; 10934 case CTL_TASK_ABORT_TASK_SET: 10935 break; 10936 case CTL_TASK_CLEAR_ACA: 10937 break; 10938 case CTL_TASK_CLEAR_TASK_SET: 10939 break; 10940 case CTL_TASK_LUN_RESET: { 10941 struct ctl_lun *lun; 10942 uint32_t targ_lun; 10943 int retval; 10944 10945 targ_lun = io->io_hdr.nexus.targ_lun; 10946 10947 if ((targ_lun < CTL_MAX_LUNS) 10948 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 10949 lun = ctl_softc->ctl_luns[targ_lun]; 10950 else { 10951 retval = 1; 10952 break; 10953 } 10954 10955 if (!(io->io_hdr.flags & 10956 CTL_FLAG_FROM_OTHER_SC)) { 10957 union ctl_ha_msg msg_info; 10958 10959 io->io_hdr.flags |= 10960 CTL_FLAG_SENT_2OTHER_SC; 10961 msg_info.hdr.msg_type = 10962 CTL_MSG_MANAGE_TASKS; 10963 msg_info.hdr.nexus = io->io_hdr.nexus; 10964 msg_info.task.task_action = 10965 CTL_TASK_LUN_RESET; 10966 msg_info.hdr.original_sc = NULL; 10967 msg_info.hdr.serializing_sc = NULL; 10968 if (CTL_HA_STATUS_SUCCESS != 10969 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10970 (void *)&msg_info, 10971 sizeof(msg_info), 0)) { 10972 } 10973 } 10974 10975 retval = ctl_lun_reset(lun, io, 10976 CTL_UA_LUN_RESET); 10977 break; 10978 } 10979 case CTL_TASK_TARGET_RESET: 10980 retval = ctl_target_reset(ctl_softc, io, 10981 CTL_UA_TARG_RESET); 10982 break; 10983 case CTL_TASK_BUS_RESET: 10984 retval = ctl_bus_reset(ctl_softc, io); 10985 break; 10986 case CTL_TASK_PORT_LOGIN: 10987 break; 10988 case CTL_TASK_PORT_LOGOUT: 10989 break; 10990 default: 10991 printf("ctl_run_task_queue: got unknown task " 10992 "management event %d\n", 10993 io->taskio.task_action); 10994 break; 10995 } 10996 if (retval == 0) 10997 io->io_hdr.status = CTL_SUCCESS; 10998 else 10999 io->io_hdr.status = CTL_ERROR; 11000 11001 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11002 ctl_io_hdr, links); 11003 /* 11004 * This will queue this I/O to the done queue, but the 11005 * work thread won't be able to process it until we 11006 * return and the lock is released. 11007 */ 11008 ctl_done_lock(io, /*have_lock*/ 1); 11009 break; 11010 } 11011 default: { 11012 11013 printf("%s: invalid I/O type %d msg %d cdb %x" 11014 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11015 __func__, io->io_hdr.io_type, 11016 io->io_hdr.msg_type, io->scsiio.cdb[0], 11017 (uintmax_t)io->io_hdr.nexus.initid.id, 11018 io->io_hdr.nexus.targ_port, 11019 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11020 io->io_hdr.nexus.targ_lun, 11021 (io->io_hdr.io_type == CTL_IO_TASK) ? 11022 io->taskio.tag_num : io->scsiio.tag_num); 11023 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11024 ctl_io_hdr, links); 11025 ctl_free_io_internal(io, 1); 11026 break; 11027 } 11028 } 11029 } 11030 11031 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11032} 11033 11034/* 11035 * For HA operation. Handle commands that come in from the other 11036 * controller. 11037 */ 11038static void 11039ctl_handle_isc(union ctl_io *io) 11040{ 11041 int free_io; 11042 struct ctl_lun *lun; 11043 struct ctl_softc *ctl_softc; 11044 11045 ctl_softc = control_softc; 11046 11047 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 11048 11049 switch (io->io_hdr.msg_type) { 11050 case CTL_MSG_SERIALIZE: 11051 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11052 /*have_lock*/ 0); 11053 break; 11054 case CTL_MSG_R2R: { 11055 uint8_t opcode; 11056 struct ctl_cmd_entry *entry; 11057 11058 /* 11059 * This is only used in SER_ONLY mode. 11060 */ 11061 free_io = 0; 11062 opcode = io->scsiio.cdb[0]; 11063 entry = &ctl_cmd_table[opcode]; 11064 mtx_lock(&ctl_softc->ctl_lock); 11065 if (ctl_scsiio_lun_check(ctl_softc, lun, 11066 entry, (struct ctl_scsiio *)io) != 0) { 11067 ctl_done_lock(io, /*have_lock*/ 1); 11068 mtx_unlock(&ctl_softc->ctl_lock); 11069 break; 11070 } 11071 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11072 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11073 &io->io_hdr, links); 11074 mtx_unlock(&ctl_softc->ctl_lock); 11075 break; 11076 } 11077 case CTL_MSG_FINISH_IO: 11078 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11079 free_io = 0; 11080 ctl_done_lock(io, /*have_lock*/ 0); 11081 } else { 11082 free_io = 1; 11083 mtx_lock(&ctl_softc->ctl_lock); 11084 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11085 ooa_links); 11086 STAILQ_REMOVE(&ctl_softc->task_queue, 11087 &io->io_hdr, ctl_io_hdr, links); 11088 ctl_check_blocked(lun); 11089 mtx_unlock(&ctl_softc->ctl_lock); 11090 } 11091 break; 11092 case CTL_MSG_PERS_ACTION: 11093 ctl_hndl_per_res_out_on_other_sc( 11094 (union ctl_ha_msg *)&io->presio.pr_msg); 11095 free_io = 1; 11096 break; 11097 case CTL_MSG_BAD_JUJU: 11098 free_io = 0; 11099 ctl_done_lock(io, /*have_lock*/ 0); 11100 break; 11101 case CTL_MSG_DATAMOVE: 11102 /* Only used in XFER mode */ 11103 free_io = 0; 11104 ctl_datamove_remote(io); 11105 break; 11106 case CTL_MSG_DATAMOVE_DONE: 11107 /* Only used in XFER mode */ 11108 free_io = 0; 11109 io->scsiio.be_move_done(io); 11110 break; 11111 default: 11112 free_io = 1; 11113 printf("%s: Invalid message type %d\n", 11114 __func__, io->io_hdr.msg_type); 11115 break; 11116 } 11117 if (free_io) 11118 ctl_free_io_internal(io, 0); 11119 11120} 11121 11122 11123/* 11124 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11125 * there is no match. 11126 */ 11127static ctl_lun_error_pattern 11128ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11129{ 11130 struct ctl_cmd_entry *entry; 11131 ctl_lun_error_pattern filtered_pattern, pattern; 11132 uint8_t opcode; 11133 11134 pattern = desc->error_pattern; 11135 11136 /* 11137 * XXX KDM we need more data passed into this function to match a 11138 * custom pattern, and we actually need to implement custom pattern 11139 * matching. 11140 */ 11141 if (pattern & CTL_LUN_PAT_CMD) 11142 return (CTL_LUN_PAT_CMD); 11143 11144 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11145 return (CTL_LUN_PAT_ANY); 11146 11147 opcode = ctsio->cdb[0]; 11148 entry = &ctl_cmd_table[opcode]; 11149 11150 filtered_pattern = entry->pattern & pattern; 11151 11152 /* 11153 * If the user requested specific flags in the pattern (e.g. 11154 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11155 * flags. 11156 * 11157 * If the user did not specify any flags, it doesn't matter whether 11158 * or not the command supports the flags. 11159 */ 11160 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11161 (pattern & ~CTL_LUN_PAT_MASK)) 11162 return (CTL_LUN_PAT_NONE); 11163 11164 /* 11165 * If the user asked for a range check, see if the requested LBA 11166 * range overlaps with this command's LBA range. 11167 */ 11168 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11169 uint64_t lba1; 11170 uint32_t len1; 11171 ctl_action action; 11172 int retval; 11173 11174 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11175 if (retval != 0) 11176 return (CTL_LUN_PAT_NONE); 11177 11178 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11179 desc->lba_range.len); 11180 /* 11181 * A "pass" means that the LBA ranges don't overlap, so 11182 * this doesn't match the user's range criteria. 11183 */ 11184 if (action == CTL_ACTION_PASS) 11185 return (CTL_LUN_PAT_NONE); 11186 } 11187 11188 return (filtered_pattern); 11189} 11190 11191/* 11192 * Called with the CTL lock held. 11193 */ 11194static void 11195ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11196{ 11197 struct ctl_error_desc *desc, *desc2; 11198 11199 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11200 ctl_lun_error_pattern pattern; 11201 /* 11202 * Check to see whether this particular command matches 11203 * the pattern in the descriptor. 11204 */ 11205 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11206 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11207 continue; 11208 11209 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11210 case CTL_LUN_INJ_ABORTED: 11211 ctl_set_aborted(&io->scsiio); 11212 break; 11213 case CTL_LUN_INJ_MEDIUM_ERR: 11214 ctl_set_medium_error(&io->scsiio); 11215 break; 11216 case CTL_LUN_INJ_UA: 11217 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11218 * OCCURRED */ 11219 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11220 break; 11221 case CTL_LUN_INJ_CUSTOM: 11222 /* 11223 * We're assuming the user knows what he is doing. 11224 * Just copy the sense information without doing 11225 * checks. 11226 */ 11227 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11228 ctl_min(sizeof(desc->custom_sense), 11229 sizeof(io->scsiio.sense_data))); 11230 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11231 io->scsiio.sense_len = SSD_FULL_SIZE; 11232 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11233 break; 11234 case CTL_LUN_INJ_NONE: 11235 default: 11236 /* 11237 * If this is an error injection type we don't know 11238 * about, clear the continuous flag (if it is set) 11239 * so it will get deleted below. 11240 */ 11241 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11242 break; 11243 } 11244 /* 11245 * By default, each error injection action is a one-shot 11246 */ 11247 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11248 continue; 11249 11250 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11251 11252 free(desc, M_CTL); 11253 } 11254} 11255 11256#ifdef CTL_IO_DELAY 11257static void 11258ctl_datamove_timer_wakeup(void *arg) 11259{ 11260 union ctl_io *io; 11261 11262 io = (union ctl_io *)arg; 11263 11264 ctl_datamove(io); 11265} 11266#endif /* CTL_IO_DELAY */ 11267 11268/* 11269 * Assumption: caller does NOT hold ctl_lock 11270 */ 11271void 11272ctl_datamove(union ctl_io *io) 11273{ 11274 void (*fe_datamove)(union ctl_io *io); 11275 11276 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11277 11278#ifdef CTL_TIME_IO 11279 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11280 char str[256]; 11281 char path_str[64]; 11282 struct sbuf sb; 11283 11284 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11285 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11286 11287 sbuf_cat(&sb, path_str); 11288 switch (io->io_hdr.io_type) { 11289 case CTL_IO_SCSI: 11290 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11291 sbuf_printf(&sb, "\n"); 11292 sbuf_cat(&sb, path_str); 11293 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11294 io->scsiio.tag_num, io->scsiio.tag_type); 11295 break; 11296 case CTL_IO_TASK: 11297 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11298 "Tag Type: %d\n", io->taskio.task_action, 11299 io->taskio.tag_num, io->taskio.tag_type); 11300 break; 11301 default: 11302 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11303 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11304 break; 11305 } 11306 sbuf_cat(&sb, path_str); 11307 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11308 (intmax_t)time_uptime - io->io_hdr.start_time); 11309 sbuf_finish(&sb); 11310 printf("%s", sbuf_data(&sb)); 11311 } 11312#endif /* CTL_TIME_IO */ 11313 11314 mtx_lock(&control_softc->ctl_lock); 11315#ifdef CTL_IO_DELAY 11316 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11317 struct ctl_lun *lun; 11318 11319 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11320 11321 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11322 } else { 11323 struct ctl_lun *lun; 11324 11325 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11326 if ((lun != NULL) 11327 && (lun->delay_info.datamove_delay > 0)) { 11328 struct callout *callout; 11329 11330 callout = (struct callout *)&io->io_hdr.timer_bytes; 11331 callout_init(callout, /*mpsafe*/ 1); 11332 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11333 callout_reset(callout, 11334 lun->delay_info.datamove_delay * hz, 11335 ctl_datamove_timer_wakeup, io); 11336 if (lun->delay_info.datamove_type == 11337 CTL_DELAY_TYPE_ONESHOT) 11338 lun->delay_info.datamove_delay = 0; 11339 mtx_unlock(&control_softc->ctl_lock); 11340 return; 11341 } 11342 } 11343#endif 11344 /* 11345 * If we have any pending task management commands, process them 11346 * first. This is necessary to eliminate a race condition with the 11347 * FETD: 11348 * 11349 * - FETD submits a task management command, like an abort. 11350 * - Back end calls fe_datamove() to move the data for the aborted 11351 * command. The FETD can't really accept it, but if it did, it 11352 * would end up transmitting data for a command that the initiator 11353 * told us to abort. 11354 * 11355 * We close the race by processing all pending task management 11356 * commands here (we can't block!), and then check this I/O to see 11357 * if it has been aborted. If so, return it to the back end with 11358 * bad status, so the back end can say return an error to the back end 11359 * and then when the back end returns an error, we can return the 11360 * aborted command to the FETD, so it can clean up its resources. 11361 */ 11362 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 11363 ctl_run_task_queue(control_softc); 11364 11365 /* 11366 * This command has been aborted. Set the port status, so we fail 11367 * the data move. 11368 */ 11369 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11370 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11371 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11372 io->io_hdr.nexus.targ_port, 11373 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11374 io->io_hdr.nexus.targ_lun); 11375 io->io_hdr.status = CTL_CMD_ABORTED; 11376 io->io_hdr.port_status = 31337; 11377 mtx_unlock(&control_softc->ctl_lock); 11378 /* 11379 * Note that the backend, in this case, will get the 11380 * callback in its context. In other cases it may get 11381 * called in the frontend's interrupt thread context. 11382 */ 11383 io->scsiio.be_move_done(io); 11384 return; 11385 } 11386 11387 /* 11388 * If we're in XFER mode and this I/O is from the other shelf 11389 * controller, we need to send the DMA to the other side to 11390 * actually transfer the data to/from the host. In serialize only 11391 * mode the transfer happens below CTL and ctl_datamove() is only 11392 * called on the machine that originally received the I/O. 11393 */ 11394 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 11395 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11396 union ctl_ha_msg msg; 11397 uint32_t sg_entries_sent; 11398 int do_sg_copy; 11399 int i; 11400 11401 memset(&msg, 0, sizeof(msg)); 11402 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 11403 msg.hdr.original_sc = io->io_hdr.original_sc; 11404 msg.hdr.serializing_sc = io; 11405 msg.hdr.nexus = io->io_hdr.nexus; 11406 msg.dt.flags = io->io_hdr.flags; 11407 /* 11408 * We convert everything into a S/G list here. We can't 11409 * pass by reference, only by value between controllers. 11410 * So we can't pass a pointer to the S/G list, only as many 11411 * S/G entries as we can fit in here. If it's possible for 11412 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 11413 * then we need to break this up into multiple transfers. 11414 */ 11415 if (io->scsiio.kern_sg_entries == 0) { 11416 msg.dt.kern_sg_entries = 1; 11417 /* 11418 * If this is in cached memory, flush the cache 11419 * before we send the DMA request to the other 11420 * controller. We want to do this in either the 11421 * read or the write case. The read case is 11422 * straightforward. In the write case, we want to 11423 * make sure nothing is in the local cache that 11424 * could overwrite the DMAed data. 11425 */ 11426 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11427 /* 11428 * XXX KDM use bus_dmamap_sync() here. 11429 */ 11430 } 11431 11432 /* 11433 * Convert to a physical address if this is a 11434 * virtual address. 11435 */ 11436 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 11437 msg.dt.sg_list[0].addr = 11438 io->scsiio.kern_data_ptr; 11439 } else { 11440 /* 11441 * XXX KDM use busdma here! 11442 */ 11443#if 0 11444 msg.dt.sg_list[0].addr = (void *) 11445 vtophys(io->scsiio.kern_data_ptr); 11446#endif 11447 } 11448 11449 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 11450 do_sg_copy = 0; 11451 } else { 11452 struct ctl_sg_entry *sgl; 11453 11454 do_sg_copy = 1; 11455 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 11456 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 11457 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11458 /* 11459 * XXX KDM use bus_dmamap_sync() here. 11460 */ 11461 } 11462 } 11463 11464 msg.dt.kern_data_len = io->scsiio.kern_data_len; 11465 msg.dt.kern_total_len = io->scsiio.kern_total_len; 11466 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 11467 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 11468 msg.dt.sg_sequence = 0; 11469 11470 /* 11471 * Loop until we've sent all of the S/G entries. On the 11472 * other end, we'll recompose these S/G entries into one 11473 * contiguous list before passing it to the 11474 */ 11475 for (sg_entries_sent = 0; sg_entries_sent < 11476 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 11477 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 11478 sizeof(msg.dt.sg_list[0])), 11479 msg.dt.kern_sg_entries - sg_entries_sent); 11480 11481 if (do_sg_copy != 0) { 11482 struct ctl_sg_entry *sgl; 11483 int j; 11484 11485 sgl = (struct ctl_sg_entry *) 11486 io->scsiio.kern_data_ptr; 11487 /* 11488 * If this is in cached memory, flush the cache 11489 * before we send the DMA request to the other 11490 * controller. We want to do this in either 11491 * the * read or the write case. The read 11492 * case is straightforward. In the write 11493 * case, we want to make sure nothing is 11494 * in the local cache that could overwrite 11495 * the DMAed data. 11496 */ 11497 11498 for (i = sg_entries_sent, j = 0; 11499 i < msg.dt.cur_sg_entries; i++, j++) { 11500 if ((io->io_hdr.flags & 11501 CTL_FLAG_NO_DATASYNC) == 0) { 11502 /* 11503 * XXX KDM use bus_dmamap_sync() 11504 */ 11505 } 11506 if ((io->io_hdr.flags & 11507 CTL_FLAG_BUS_ADDR) == 0) { 11508 /* 11509 * XXX KDM use busdma. 11510 */ 11511#if 0 11512 msg.dt.sg_list[j].addr =(void *) 11513 vtophys(sgl[i].addr); 11514#endif 11515 } else { 11516 msg.dt.sg_list[j].addr = 11517 sgl[i].addr; 11518 } 11519 msg.dt.sg_list[j].len = sgl[i].len; 11520 } 11521 } 11522 11523 sg_entries_sent += msg.dt.cur_sg_entries; 11524 if (sg_entries_sent >= msg.dt.kern_sg_entries) 11525 msg.dt.sg_last = 1; 11526 else 11527 msg.dt.sg_last = 0; 11528 11529 /* 11530 * XXX KDM drop and reacquire the lock here? 11531 */ 11532 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 11533 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 11534 /* 11535 * XXX do something here. 11536 */ 11537 } 11538 11539 msg.dt.sent_sg_entries = sg_entries_sent; 11540 } 11541 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11542 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 11543 ctl_failover_io(io, /*have_lock*/ 1); 11544 11545 } else { 11546 11547 /* 11548 * Lookup the fe_datamove() function for this particular 11549 * front end. 11550 */ 11551 fe_datamove = 11552 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11553 mtx_unlock(&control_softc->ctl_lock); 11554 11555 fe_datamove(io); 11556 } 11557} 11558 11559static void 11560ctl_send_datamove_done(union ctl_io *io, int have_lock) 11561{ 11562 union ctl_ha_msg msg; 11563 int isc_status; 11564 11565 memset(&msg, 0, sizeof(msg)); 11566 11567 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 11568 msg.hdr.original_sc = io; 11569 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 11570 msg.hdr.nexus = io->io_hdr.nexus; 11571 msg.hdr.status = io->io_hdr.status; 11572 msg.scsi.tag_num = io->scsiio.tag_num; 11573 msg.scsi.tag_type = io->scsiio.tag_type; 11574 msg.scsi.scsi_status = io->scsiio.scsi_status; 11575 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 11576 sizeof(io->scsiio.sense_data)); 11577 msg.scsi.sense_len = io->scsiio.sense_len; 11578 msg.scsi.sense_residual = io->scsiio.sense_residual; 11579 msg.scsi.fetd_status = io->io_hdr.port_status; 11580 msg.scsi.residual = io->scsiio.residual; 11581 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11582 11583 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 11584 ctl_failover_io(io, /*have_lock*/ have_lock); 11585 return; 11586 } 11587 11588 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 11589 if (isc_status > CTL_HA_STATUS_SUCCESS) { 11590 /* XXX do something if this fails */ 11591 } 11592 11593} 11594 11595/* 11596 * The DMA to the remote side is done, now we need to tell the other side 11597 * we're done so it can continue with its data movement. 11598 */ 11599static void 11600ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 11601{ 11602 union ctl_io *io; 11603 11604 io = rq->context; 11605 11606 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11607 printf("%s: ISC DMA write failed with error %d", __func__, 11608 rq->ret); 11609 ctl_set_internal_failure(&io->scsiio, 11610 /*sks_valid*/ 1, 11611 /*retry_count*/ rq->ret); 11612 } 11613 11614 ctl_dt_req_free(rq); 11615 11616 /* 11617 * In this case, we had to malloc the memory locally. Free it. 11618 */ 11619 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11620 int i; 11621 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11622 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11623 } 11624 /* 11625 * The data is in local and remote memory, so now we need to send 11626 * status (good or back) back to the other side. 11627 */ 11628 ctl_send_datamove_done(io, /*have_lock*/ 0); 11629} 11630 11631/* 11632 * We've moved the data from the host/controller into local memory. Now we 11633 * need to push it over to the remote controller's memory. 11634 */ 11635static int 11636ctl_datamove_remote_dm_write_cb(union ctl_io *io) 11637{ 11638 int retval; 11639 11640 retval = 0; 11641 11642 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 11643 ctl_datamove_remote_write_cb); 11644 11645 return (retval); 11646} 11647 11648static void 11649ctl_datamove_remote_write(union ctl_io *io) 11650{ 11651 int retval; 11652 void (*fe_datamove)(union ctl_io *io); 11653 11654 /* 11655 * - Get the data from the host/HBA into local memory. 11656 * - DMA memory from the local controller to the remote controller. 11657 * - Send status back to the remote controller. 11658 */ 11659 11660 retval = ctl_datamove_remote_sgl_setup(io); 11661 if (retval != 0) 11662 return; 11663 11664 /* Switch the pointer over so the FETD knows what to do */ 11665 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11666 11667 /* 11668 * Use a custom move done callback, since we need to send completion 11669 * back to the other controller, not to the backend on this side. 11670 */ 11671 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 11672 11673 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11674 11675 fe_datamove(io); 11676 11677 return; 11678 11679} 11680 11681static int 11682ctl_datamove_remote_dm_read_cb(union ctl_io *io) 11683{ 11684#if 0 11685 char str[256]; 11686 char path_str[64]; 11687 struct sbuf sb; 11688#endif 11689 11690 /* 11691 * In this case, we had to malloc the memory locally. Free it. 11692 */ 11693 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 11694 int i; 11695 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11696 free(io->io_hdr.local_sglist[i].addr, M_CTL); 11697 } 11698 11699#if 0 11700 scsi_path_string(io, path_str, sizeof(path_str)); 11701 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11702 sbuf_cat(&sb, path_str); 11703 scsi_command_string(&io->scsiio, NULL, &sb); 11704 sbuf_printf(&sb, "\n"); 11705 sbuf_cat(&sb, path_str); 11706 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11707 io->scsiio.tag_num, io->scsiio.tag_type); 11708 sbuf_cat(&sb, path_str); 11709 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 11710 io->io_hdr.flags, io->io_hdr.status); 11711 sbuf_finish(&sb); 11712 printk("%s", sbuf_data(&sb)); 11713#endif 11714 11715 11716 /* 11717 * The read is done, now we need to send status (good or bad) back 11718 * to the other side. 11719 */ 11720 ctl_send_datamove_done(io, /*have_lock*/ 0); 11721 11722 return (0); 11723} 11724 11725static void 11726ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 11727{ 11728 union ctl_io *io; 11729 void (*fe_datamove)(union ctl_io *io); 11730 11731 io = rq->context; 11732 11733 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 11734 printf("%s: ISC DMA read failed with error %d", __func__, 11735 rq->ret); 11736 ctl_set_internal_failure(&io->scsiio, 11737 /*sks_valid*/ 1, 11738 /*retry_count*/ rq->ret); 11739 } 11740 11741 ctl_dt_req_free(rq); 11742 11743 /* Switch the pointer over so the FETD knows what to do */ 11744 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 11745 11746 /* 11747 * Use a custom move done callback, since we need to send completion 11748 * back to the other controller, not to the backend on this side. 11749 */ 11750 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 11751 11752 /* XXX KDM add checks like the ones in ctl_datamove? */ 11753 11754 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 11755 11756 fe_datamove(io); 11757} 11758 11759static int 11760ctl_datamove_remote_sgl_setup(union ctl_io *io) 11761{ 11762 struct ctl_sg_entry *local_sglist, *remote_sglist; 11763 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 11764 struct ctl_softc *softc; 11765 int retval; 11766 int i; 11767 11768 retval = 0; 11769 softc = control_softc; 11770 11771 local_sglist = io->io_hdr.local_sglist; 11772 local_dma_sglist = io->io_hdr.local_dma_sglist; 11773 remote_sglist = io->io_hdr.remote_sglist; 11774 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 11775 11776 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 11777 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 11778 local_sglist[i].len = remote_sglist[i].len; 11779 11780 /* 11781 * XXX Detect the situation where the RS-level I/O 11782 * redirector on the other side has already read the 11783 * data off of the AOR RS on this side, and 11784 * transferred it to remote (mirror) memory on the 11785 * other side. Since we already have the data in 11786 * memory here, we just need to use it. 11787 * 11788 * XXX KDM this can probably be removed once we 11789 * get the cache device code in and take the 11790 * current AOR implementation out. 11791 */ 11792#ifdef NEEDTOPORT 11793 if ((remote_sglist[i].addr >= 11794 (void *)vtophys(softc->mirr->addr)) 11795 && (remote_sglist[i].addr < 11796 ((void *)vtophys(softc->mirr->addr) + 11797 CacheMirrorOffset))) { 11798 local_sglist[i].addr = remote_sglist[i].addr - 11799 CacheMirrorOffset; 11800 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 11801 CTL_FLAG_DATA_IN) 11802 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 11803 } else { 11804 local_sglist[i].addr = remote_sglist[i].addr + 11805 CacheMirrorOffset; 11806 } 11807#endif 11808#if 0 11809 printf("%s: local %p, remote %p, len %d\n", 11810 __func__, local_sglist[i].addr, 11811 remote_sglist[i].addr, local_sglist[i].len); 11812#endif 11813 } 11814 } else { 11815 uint32_t len_to_go; 11816 11817 /* 11818 * In this case, we don't have automatically allocated 11819 * memory for this I/O on this controller. This typically 11820 * happens with internal CTL I/O -- e.g. inquiry, mode 11821 * sense, etc. Anything coming from RAIDCore will have 11822 * a mirror area available. 11823 */ 11824 len_to_go = io->scsiio.kern_data_len; 11825 11826 /* 11827 * Clear the no datasync flag, we have to use malloced 11828 * buffers. 11829 */ 11830 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 11831 11832 /* 11833 * The difficult thing here is that the size of the various 11834 * S/G segments may be different than the size from the 11835 * remote controller. That'll make it harder when DMAing 11836 * the data back to the other side. 11837 */ 11838 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 11839 sizeof(io->io_hdr.remote_sglist[0])) && 11840 (len_to_go > 0); i++) { 11841 local_sglist[i].len = ctl_min(len_to_go, 131072); 11842 CTL_SIZE_8B(local_dma_sglist[i].len, 11843 local_sglist[i].len); 11844 local_sglist[i].addr = 11845 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 11846 11847 local_dma_sglist[i].addr = local_sglist[i].addr; 11848 11849 if (local_sglist[i].addr == NULL) { 11850 int j; 11851 11852 printf("malloc failed for %zd bytes!", 11853 local_dma_sglist[i].len); 11854 for (j = 0; j < i; j++) { 11855 free(local_sglist[j].addr, M_CTL); 11856 } 11857 ctl_set_internal_failure(&io->scsiio, 11858 /*sks_valid*/ 1, 11859 /*retry_count*/ 4857); 11860 retval = 1; 11861 goto bailout_error; 11862 11863 } 11864 /* XXX KDM do we need a sync here? */ 11865 11866 len_to_go -= local_sglist[i].len; 11867 } 11868 /* 11869 * Reset the number of S/G entries accordingly. The 11870 * original number of S/G entries is available in 11871 * rem_sg_entries. 11872 */ 11873 io->scsiio.kern_sg_entries = i; 11874 11875#if 0 11876 printf("%s: kern_sg_entries = %d\n", __func__, 11877 io->scsiio.kern_sg_entries); 11878 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 11879 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 11880 local_sglist[i].addr, local_sglist[i].len, 11881 local_dma_sglist[i].len); 11882#endif 11883 } 11884 11885 11886 return (retval); 11887 11888bailout_error: 11889 11890 ctl_send_datamove_done(io, /*have_lock*/ 0); 11891 11892 return (retval); 11893} 11894 11895static int 11896ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 11897 ctl_ha_dt_cb callback) 11898{ 11899 struct ctl_ha_dt_req *rq; 11900 struct ctl_sg_entry *remote_sglist, *local_sglist; 11901 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 11902 uint32_t local_used, remote_used, total_used; 11903 int retval; 11904 int i, j; 11905 11906 retval = 0; 11907 11908 rq = ctl_dt_req_alloc(); 11909 11910 /* 11911 * If we failed to allocate the request, and if the DMA didn't fail 11912 * anyway, set busy status. This is just a resource allocation 11913 * failure. 11914 */ 11915 if ((rq == NULL) 11916 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 11917 ctl_set_busy(&io->scsiio); 11918 11919 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 11920 11921 if (rq != NULL) 11922 ctl_dt_req_free(rq); 11923 11924 /* 11925 * The data move failed. We need to return status back 11926 * to the other controller. No point in trying to DMA 11927 * data to the remote controller. 11928 */ 11929 11930 ctl_send_datamove_done(io, /*have_lock*/ 0); 11931 11932 retval = 1; 11933 11934 goto bailout; 11935 } 11936 11937 local_sglist = io->io_hdr.local_sglist; 11938 local_dma_sglist = io->io_hdr.local_dma_sglist; 11939 remote_sglist = io->io_hdr.remote_sglist; 11940 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 11941 local_used = 0; 11942 remote_used = 0; 11943 total_used = 0; 11944 11945 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 11946 rq->ret = CTL_HA_STATUS_SUCCESS; 11947 rq->context = io; 11948 callback(rq); 11949 goto bailout; 11950 } 11951 11952 /* 11953 * Pull/push the data over the wire from/to the other controller. 11954 * This takes into account the possibility that the local and 11955 * remote sglists may not be identical in terms of the size of 11956 * the elements and the number of elements. 11957 * 11958 * One fundamental assumption here is that the length allocated for 11959 * both the local and remote sglists is identical. Otherwise, we've 11960 * essentially got a coding error of some sort. 11961 */ 11962 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 11963 int isc_ret; 11964 uint32_t cur_len, dma_length; 11965 uint8_t *tmp_ptr; 11966 11967 rq->id = CTL_HA_DATA_CTL; 11968 rq->command = command; 11969 rq->context = io; 11970 11971 /* 11972 * Both pointers should be aligned. But it is possible 11973 * that the allocation length is not. They should both 11974 * also have enough slack left over at the end, though, 11975 * to round up to the next 8 byte boundary. 11976 */ 11977 cur_len = ctl_min(local_sglist[i].len - local_used, 11978 remote_sglist[j].len - remote_used); 11979 11980 /* 11981 * In this case, we have a size issue and need to decrease 11982 * the size, except in the case where we actually have less 11983 * than 8 bytes left. In that case, we need to increase 11984 * the DMA length to get the last bit. 11985 */ 11986 if ((cur_len & 0x7) != 0) { 11987 if (cur_len > 0x7) { 11988 cur_len = cur_len - (cur_len & 0x7); 11989 dma_length = cur_len; 11990 } else { 11991 CTL_SIZE_8B(dma_length, cur_len); 11992 } 11993 11994 } else 11995 dma_length = cur_len; 11996 11997 /* 11998 * If we had to allocate memory for this I/O, instead of using 11999 * the non-cached mirror memory, we'll need to flush the cache 12000 * before trying to DMA to the other controller. 12001 * 12002 * We could end up doing this multiple times for the same 12003 * segment if we have a larger local segment than remote 12004 * segment. That shouldn't be an issue. 12005 */ 12006 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12007 /* 12008 * XXX KDM use bus_dmamap_sync() here. 12009 */ 12010 } 12011 12012 rq->size = dma_length; 12013 12014 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12015 tmp_ptr += local_used; 12016 12017 /* Use physical addresses when talking to ISC hardware */ 12018 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12019 /* XXX KDM use busdma */ 12020#if 0 12021 rq->local = vtophys(tmp_ptr); 12022#endif 12023 } else 12024 rq->local = tmp_ptr; 12025 12026 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12027 tmp_ptr += remote_used; 12028 rq->remote = tmp_ptr; 12029 12030 rq->callback = NULL; 12031 12032 local_used += cur_len; 12033 if (local_used >= local_sglist[i].len) { 12034 i++; 12035 local_used = 0; 12036 } 12037 12038 remote_used += cur_len; 12039 if (remote_used >= remote_sglist[j].len) { 12040 j++; 12041 remote_used = 0; 12042 } 12043 total_used += cur_len; 12044 12045 if (total_used >= io->scsiio.kern_data_len) 12046 rq->callback = callback; 12047 12048 if ((rq->size & 0x7) != 0) { 12049 printf("%s: warning: size %d is not on 8b boundary\n", 12050 __func__, rq->size); 12051 } 12052 if (((uintptr_t)rq->local & 0x7) != 0) { 12053 printf("%s: warning: local %p not on 8b boundary\n", 12054 __func__, rq->local); 12055 } 12056 if (((uintptr_t)rq->remote & 0x7) != 0) { 12057 printf("%s: warning: remote %p not on 8b boundary\n", 12058 __func__, rq->local); 12059 } 12060#if 0 12061 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12062 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12063 rq->local, rq->remote, rq->size); 12064#endif 12065 12066 isc_ret = ctl_dt_single(rq); 12067 if (isc_ret == CTL_HA_STATUS_WAIT) 12068 continue; 12069 12070 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12071 rq->ret = CTL_HA_STATUS_SUCCESS; 12072 } else { 12073 rq->ret = isc_ret; 12074 } 12075 callback(rq); 12076 goto bailout; 12077 } 12078 12079bailout: 12080 return (retval); 12081 12082} 12083 12084static void 12085ctl_datamove_remote_read(union ctl_io *io) 12086{ 12087 int retval; 12088 int i; 12089 12090 /* 12091 * This will send an error to the other controller in the case of a 12092 * failure. 12093 */ 12094 retval = ctl_datamove_remote_sgl_setup(io); 12095 if (retval != 0) 12096 return; 12097 12098 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12099 ctl_datamove_remote_read_cb); 12100 if ((retval != 0) 12101 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12102 /* 12103 * Make sure we free memory if there was an error.. The 12104 * ctl_datamove_remote_xfer() function will send the 12105 * datamove done message, or call the callback with an 12106 * error if there is a problem. 12107 */ 12108 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12109 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12110 } 12111 12112 return; 12113} 12114 12115/* 12116 * Process a datamove request from the other controller. This is used for 12117 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12118 * first. Once that is complete, the data gets DMAed into the remote 12119 * controller's memory. For reads, we DMA from the remote controller's 12120 * memory into our memory first, and then move it out to the FETD. 12121 * 12122 * Should be called without the ctl_lock held. 12123 */ 12124static void 12125ctl_datamove_remote(union ctl_io *io) 12126{ 12127 struct ctl_softc *softc; 12128 12129 softc = control_softc; 12130 12131 /* 12132 * Note that we look for an aborted I/O here, but don't do some of 12133 * the other checks that ctl_datamove() normally does. We don't 12134 * need to run the task queue, because this I/O is on the ISC 12135 * queue, which is executed by the work thread after the task queue. 12136 * We don't need to run the datamove delay code, since that should 12137 * have been done if need be on the other controller. 12138 */ 12139 mtx_lock(&softc->ctl_lock); 12140 12141 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12142 12143 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12144 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12145 io->io_hdr.nexus.targ_port, 12146 io->io_hdr.nexus.targ_target.id, 12147 io->io_hdr.nexus.targ_lun); 12148 io->io_hdr.status = CTL_CMD_ABORTED; 12149 io->io_hdr.port_status = 31338; 12150 12151 mtx_unlock(&softc->ctl_lock); 12152 12153 ctl_send_datamove_done(io, /*have_lock*/ 0); 12154 12155 return; 12156 } 12157 12158 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12159 mtx_unlock(&softc->ctl_lock); 12160 ctl_datamove_remote_write(io); 12161 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12162 mtx_unlock(&softc->ctl_lock); 12163 ctl_datamove_remote_read(io); 12164 } else { 12165 union ctl_ha_msg msg; 12166 struct scsi_sense_data *sense; 12167 uint8_t sks[3]; 12168 int retry_count; 12169 12170 memset(&msg, 0, sizeof(msg)); 12171 12172 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12173 msg.hdr.status = CTL_SCSI_ERROR; 12174 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12175 12176 retry_count = 4243; 12177 12178 sense = &msg.scsi.sense_data; 12179 sks[0] = SSD_SCS_VALID; 12180 sks[1] = (retry_count >> 8) & 0xff; 12181 sks[2] = retry_count & 0xff; 12182 12183 /* "Internal target failure" */ 12184 scsi_set_sense_data(sense, 12185 /*sense_format*/ SSD_TYPE_NONE, 12186 /*current_error*/ 1, 12187 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12188 /*asc*/ 0x44, 12189 /*ascq*/ 0x00, 12190 /*type*/ SSD_ELEM_SKS, 12191 /*size*/ sizeof(sks), 12192 /*data*/ sks, 12193 SSD_ELEM_NONE); 12194 12195 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12196 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12197 ctl_failover_io(io, /*have_lock*/ 1); 12198 mtx_unlock(&softc->ctl_lock); 12199 return; 12200 } 12201 12202 mtx_unlock(&softc->ctl_lock); 12203 12204 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12205 CTL_HA_STATUS_SUCCESS) { 12206 /* XXX KDM what to do if this fails? */ 12207 } 12208 return; 12209 } 12210 12211} 12212 12213static int 12214ctl_process_done(union ctl_io *io, int have_lock) 12215{ 12216 struct ctl_lun *lun; 12217 struct ctl_softc *ctl_softc; 12218 void (*fe_done)(union ctl_io *io); 12219 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12220 12221 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12222 12223 fe_done = 12224 control_softc->ctl_ports[targ_port]->fe_done; 12225 12226#ifdef CTL_TIME_IO 12227 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12228 char str[256]; 12229 char path_str[64]; 12230 struct sbuf sb; 12231 12232 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12233 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12234 12235 sbuf_cat(&sb, path_str); 12236 switch (io->io_hdr.io_type) { 12237 case CTL_IO_SCSI: 12238 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12239 sbuf_printf(&sb, "\n"); 12240 sbuf_cat(&sb, path_str); 12241 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12242 io->scsiio.tag_num, io->scsiio.tag_type); 12243 break; 12244 case CTL_IO_TASK: 12245 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12246 "Tag Type: %d\n", io->taskio.task_action, 12247 io->taskio.tag_num, io->taskio.tag_type); 12248 break; 12249 default: 12250 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12251 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12252 break; 12253 } 12254 sbuf_cat(&sb, path_str); 12255 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12256 (intmax_t)time_uptime - io->io_hdr.start_time); 12257 sbuf_finish(&sb); 12258 printf("%s", sbuf_data(&sb)); 12259 } 12260#endif /* CTL_TIME_IO */ 12261 12262 switch (io->io_hdr.io_type) { 12263 case CTL_IO_SCSI: 12264 break; 12265 case CTL_IO_TASK: 12266 ctl_io_error_print(io, NULL); 12267 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12268 ctl_free_io_internal(io, /*have_lock*/ 0); 12269 else 12270 fe_done(io); 12271 return (CTL_RETVAL_COMPLETE); 12272 break; 12273 default: 12274 printf("ctl_process_done: invalid io type %d\n", 12275 io->io_hdr.io_type); 12276 panic("ctl_process_done: invalid io type %d\n", 12277 io->io_hdr.io_type); 12278 break; /* NOTREACHED */ 12279 } 12280 12281 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12282 if (lun == NULL) { 12283 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12284 io->io_hdr.nexus.targ_lun)); 12285 fe_done(io); 12286 goto bailout; 12287 } 12288 ctl_softc = lun->ctl_softc; 12289 12290 /* 12291 * Remove this from the OOA queue. 12292 */ 12293 if (have_lock == 0) 12294 mtx_lock(&ctl_softc->ctl_lock); 12295 12296 /* 12297 * Check to see if we have any errors to inject here. We only 12298 * inject errors for commands that don't already have errors set. 12299 */ 12300 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12301 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12302 ctl_inject_error(lun, io); 12303 12304 /* 12305 * XXX KDM how do we treat commands that aren't completed 12306 * successfully? 12307 * 12308 * XXX KDM should we also track I/O latency? 12309 */ 12310 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 12311 uint32_t blocksize; 12312#ifdef CTL_TIME_IO 12313 struct bintime cur_bt; 12314#endif 12315 12316 if ((lun->be_lun != NULL) 12317 && (lun->be_lun->blocksize != 0)) 12318 blocksize = lun->be_lun->blocksize; 12319 else 12320 blocksize = 512; 12321 12322 switch (io->io_hdr.io_type) { 12323 case CTL_IO_SCSI: { 12324 int isread; 12325 struct ctl_lba_len lbalen; 12326 12327 isread = 0; 12328 switch (io->scsiio.cdb[0]) { 12329 case READ_6: 12330 case READ_10: 12331 case READ_12: 12332 case READ_16: 12333 isread = 1; 12334 /* FALLTHROUGH */ 12335 case WRITE_6: 12336 case WRITE_10: 12337 case WRITE_12: 12338 case WRITE_16: 12339 case WRITE_VERIFY_10: 12340 case WRITE_VERIFY_12: 12341 case WRITE_VERIFY_16: 12342 memcpy(&lbalen, io->io_hdr.ctl_private[ 12343 CTL_PRIV_LBA_LEN].bytes, sizeof(lbalen)); 12344 12345 if (isread) { 12346 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 12347 lbalen.len * blocksize; 12348 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 12349 12350#ifdef CTL_TIME_IO 12351 bintime_add( 12352 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 12353 &io->io_hdr.dma_bt); 12354 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 12355 io->io_hdr.num_dmas; 12356 getbintime(&cur_bt); 12357 bintime_sub(&cur_bt, 12358 &io->io_hdr.start_bt); 12359 12360 bintime_add( 12361 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 12362 &cur_bt); 12363 12364#if 0 12365 cs_prof_gettime(&cur_ticks); 12366 lun->stats.time[CTL_STATS_READ] += 12367 cur_ticks - 12368 io->io_hdr.start_ticks; 12369#endif 12370#if 0 12371 lun->stats.time[CTL_STATS_READ] += 12372 jiffies - io->io_hdr.start_time; 12373#endif 12374#endif /* CTL_TIME_IO */ 12375 } else { 12376 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 12377 lbalen.len * blocksize; 12378 lun->stats.ports[targ_port].operations[ 12379 CTL_STATS_WRITE]++; 12380 12381#ifdef CTL_TIME_IO 12382 bintime_add( 12383 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 12384 &io->io_hdr.dma_bt); 12385 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 12386 io->io_hdr.num_dmas; 12387 getbintime(&cur_bt); 12388 bintime_sub(&cur_bt, 12389 &io->io_hdr.start_bt); 12390 12391 bintime_add( 12392 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 12393 &cur_bt); 12394#if 0 12395 cs_prof_gettime(&cur_ticks); 12396 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12397 cur_ticks - 12398 io->io_hdr.start_ticks; 12399 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12400 jiffies - io->io_hdr.start_time; 12401#endif 12402#endif /* CTL_TIME_IO */ 12403 } 12404 break; 12405 default: 12406 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 12407 12408#ifdef CTL_TIME_IO 12409 bintime_add( 12410 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 12411 &io->io_hdr.dma_bt); 12412 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 12413 io->io_hdr.num_dmas; 12414 getbintime(&cur_bt); 12415 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 12416 12417 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 12418 &cur_bt); 12419 12420#if 0 12421 cs_prof_gettime(&cur_ticks); 12422 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12423 cur_ticks - 12424 io->io_hdr.start_ticks; 12425 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12426 jiffies - io->io_hdr.start_time; 12427#endif 12428#endif /* CTL_TIME_IO */ 12429 break; 12430 } 12431 break; 12432 } 12433 default: 12434 break; 12435 } 12436 } 12437 12438 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 12439 12440 /* 12441 * Run through the blocked queue on this LUN and see if anything 12442 * has become unblocked, now that this transaction is done. 12443 */ 12444 ctl_check_blocked(lun); 12445 12446 /* 12447 * If the LUN has been invalidated, free it if there is nothing 12448 * left on its OOA queue. 12449 */ 12450 if ((lun->flags & CTL_LUN_INVALID) 12451 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 12452 ctl_free_lun(lun); 12453 12454 /* 12455 * If this command has been aborted, make sure we set the status 12456 * properly. The FETD is responsible for freeing the I/O and doing 12457 * whatever it needs to do to clean up its state. 12458 */ 12459 if (io->io_hdr.flags & CTL_FLAG_ABORT) 12460 io->io_hdr.status = CTL_CMD_ABORTED; 12461 12462 /* 12463 * We print out status for every task management command. For SCSI 12464 * commands, we filter out any unit attention errors; they happen 12465 * on every boot, and would clutter up the log. Note: task 12466 * management commands aren't printed here, they are printed above, 12467 * since they should never even make it down here. 12468 */ 12469 switch (io->io_hdr.io_type) { 12470 case CTL_IO_SCSI: { 12471 int error_code, sense_key, asc, ascq; 12472 12473 sense_key = 0; 12474 12475 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 12476 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 12477 /* 12478 * Since this is just for printing, no need to 12479 * show errors here. 12480 */ 12481 scsi_extract_sense_len(&io->scsiio.sense_data, 12482 io->scsiio.sense_len, 12483 &error_code, 12484 &sense_key, 12485 &asc, 12486 &ascq, 12487 /*show_errors*/ 0); 12488 } 12489 12490 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 12491 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 12492 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 12493 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 12494 12495 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 12496 ctl_softc->skipped_prints++; 12497 if (have_lock == 0) 12498 mtx_unlock(&ctl_softc->ctl_lock); 12499 } else { 12500 uint32_t skipped_prints; 12501 12502 skipped_prints = ctl_softc->skipped_prints; 12503 12504 ctl_softc->skipped_prints = 0; 12505 ctl_softc->last_print_jiffies = time_uptime; 12506 12507 if (have_lock == 0) 12508 mtx_unlock(&ctl_softc->ctl_lock); 12509 if (skipped_prints > 0) { 12510#ifdef NEEDTOPORT 12511 csevent_log(CSC_CTL | CSC_SHELF_SW | 12512 CTL_ERROR_REPORT, 12513 csevent_LogType_Trace, 12514 csevent_Severity_Information, 12515 csevent_AlertLevel_Green, 12516 csevent_FRU_Firmware, 12517 csevent_FRU_Unknown, 12518 "High CTL error volume, %d prints " 12519 "skipped", skipped_prints); 12520#endif 12521 } 12522 ctl_io_error_print(io, NULL); 12523 } 12524 } else { 12525 if (have_lock == 0) 12526 mtx_unlock(&ctl_softc->ctl_lock); 12527 } 12528 break; 12529 } 12530 case CTL_IO_TASK: 12531 if (have_lock == 0) 12532 mtx_unlock(&ctl_softc->ctl_lock); 12533 ctl_io_error_print(io, NULL); 12534 break; 12535 default: 12536 if (have_lock == 0) 12537 mtx_unlock(&ctl_softc->ctl_lock); 12538 break; 12539 } 12540 12541 /* 12542 * Tell the FETD or the other shelf controller we're done with this 12543 * command. Note that only SCSI commands get to this point. Task 12544 * management commands are completed above. 12545 * 12546 * We only send status to the other controller if we're in XFER 12547 * mode. In SER_ONLY mode, the I/O is done on the controller that 12548 * received the I/O (from CTL's perspective), and so the status is 12549 * generated there. 12550 * 12551 * XXX KDM if we hold the lock here, we could cause a deadlock 12552 * if the frontend comes back in in this context to queue 12553 * something. 12554 */ 12555 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 12556 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12557 union ctl_ha_msg msg; 12558 12559 memset(&msg, 0, sizeof(msg)); 12560 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 12561 msg.hdr.original_sc = io->io_hdr.original_sc; 12562 msg.hdr.nexus = io->io_hdr.nexus; 12563 msg.hdr.status = io->io_hdr.status; 12564 msg.scsi.scsi_status = io->scsiio.scsi_status; 12565 msg.scsi.tag_num = io->scsiio.tag_num; 12566 msg.scsi.tag_type = io->scsiio.tag_type; 12567 msg.scsi.sense_len = io->scsiio.sense_len; 12568 msg.scsi.sense_residual = io->scsiio.sense_residual; 12569 msg.scsi.residual = io->scsiio.residual; 12570 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12571 sizeof(io->scsiio.sense_data)); 12572 /* 12573 * We copy this whether or not this is an I/O-related 12574 * command. Otherwise, we'd have to go and check to see 12575 * whether it's a read/write command, and it really isn't 12576 * worth it. 12577 */ 12578 memcpy(&msg.scsi.lbalen, 12579 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 12580 sizeof(msg.scsi.lbalen));; 12581 12582 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12583 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12584 /* XXX do something here */ 12585 } 12586 12587 ctl_free_io_internal(io, /*have_lock*/ 0); 12588 } else 12589 fe_done(io); 12590 12591bailout: 12592 12593 return (CTL_RETVAL_COMPLETE); 12594} 12595 12596/* 12597 * Front end should call this if it doesn't do autosense. When the request 12598 * sense comes back in from the initiator, we'll dequeue this and send it. 12599 */ 12600int 12601ctl_queue_sense(union ctl_io *io) 12602{ 12603 struct ctl_lun *lun; 12604 struct ctl_softc *ctl_softc; 12605 uint32_t initidx; 12606 12607 ctl_softc = control_softc; 12608 12609 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 12610 12611 /* 12612 * LUN lookup will likely move to the ctl_work_thread() once we 12613 * have our new queueing infrastructure (that doesn't put things on 12614 * a per-LUN queue initially). That is so that we can handle 12615 * things like an INQUIRY to a LUN that we don't have enabled. We 12616 * can't deal with that right now. 12617 */ 12618 mtx_lock(&ctl_softc->ctl_lock); 12619 12620 /* 12621 * If we don't have a LUN for this, just toss the sense 12622 * information. 12623 */ 12624 if ((io->io_hdr.nexus.targ_lun < CTL_MAX_LUNS) 12625 && (ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun] != NULL)) 12626 lun = ctl_softc->ctl_luns[io->io_hdr.nexus.targ_lun]; 12627 else 12628 goto bailout; 12629 12630 initidx = ctl_get_initindex(&io->io_hdr.nexus); 12631 12632 /* 12633 * Already have CA set for this LUN...toss the sense information. 12634 */ 12635 if (ctl_is_set(lun->have_ca, initidx)) 12636 goto bailout; 12637 12638 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 12639 ctl_min(sizeof(lun->pending_sense[initidx].sense), 12640 sizeof(io->scsiio.sense_data))); 12641 ctl_set_mask(lun->have_ca, initidx); 12642 12643bailout: 12644 mtx_unlock(&ctl_softc->ctl_lock); 12645 12646 ctl_free_io(io); 12647 12648 return (CTL_RETVAL_COMPLETE); 12649} 12650 12651/* 12652 * Primary command inlet from frontend ports. All SCSI and task I/O 12653 * requests must go through this function. 12654 */ 12655int 12656ctl_queue(union ctl_io *io) 12657{ 12658 struct ctl_softc *ctl_softc; 12659 12660 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 12661 12662 ctl_softc = control_softc; 12663 12664#ifdef CTL_TIME_IO 12665 io->io_hdr.start_time = time_uptime; 12666 getbintime(&io->io_hdr.start_bt); 12667#endif /* CTL_TIME_IO */ 12668 12669 mtx_lock(&ctl_softc->ctl_lock); 12670 12671 switch (io->io_hdr.io_type) { 12672 case CTL_IO_SCSI: 12673 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 12674 links); 12675 break; 12676 case CTL_IO_TASK: 12677 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 12678 /* 12679 * Set the task pending flag. This is necessary to close a 12680 * race condition with the FETD: 12681 * 12682 * - FETD submits a task management command, like an abort. 12683 * - Back end calls fe_datamove() to move the data for the 12684 * aborted command. The FETD can't really accept it, but 12685 * if it did, it would end up transmitting data for a 12686 * command that the initiator told us to abort. 12687 * 12688 * We close the race condition by setting the flag here, 12689 * and checking it in ctl_datamove(), before calling the 12690 * FETD's fe_datamove routine. If we've got a task 12691 * pending, we run the task queue and then check to see 12692 * whether our particular I/O has been aborted. 12693 */ 12694 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 12695 break; 12696 default: 12697 mtx_unlock(&ctl_softc->ctl_lock); 12698 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 12699 return (-EINVAL); 12700 break; /* NOTREACHED */ 12701 } 12702 mtx_unlock(&ctl_softc->ctl_lock); 12703 12704 ctl_wakeup_thread(); 12705 12706 return (CTL_RETVAL_COMPLETE); 12707} 12708 12709#ifdef CTL_IO_DELAY 12710static void 12711ctl_done_timer_wakeup(void *arg) 12712{ 12713 union ctl_io *io; 12714 12715 io = (union ctl_io *)arg; 12716 ctl_done_lock(io, /*have_lock*/ 0); 12717} 12718#endif /* CTL_IO_DELAY */ 12719 12720void 12721ctl_done_lock(union ctl_io *io, int have_lock) 12722{ 12723 struct ctl_softc *ctl_softc; 12724#ifndef CTL_DONE_THREAD 12725 union ctl_io *xio; 12726#endif /* !CTL_DONE_THREAD */ 12727 12728 ctl_softc = control_softc; 12729 12730 if (have_lock == 0) 12731 mtx_lock(&ctl_softc->ctl_lock); 12732 12733 /* 12734 * Enable this to catch duplicate completion issues. 12735 */ 12736#if 0 12737 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 12738 printf("%s: type %d msg %d cdb %x iptl: " 12739 "%d:%d:%d:%d tag 0x%04x " 12740 "flag %#x status %x\n", 12741 __func__, 12742 io->io_hdr.io_type, 12743 io->io_hdr.msg_type, 12744 io->scsiio.cdb[0], 12745 io->io_hdr.nexus.initid.id, 12746 io->io_hdr.nexus.targ_port, 12747 io->io_hdr.nexus.targ_target.id, 12748 io->io_hdr.nexus.targ_lun, 12749 (io->io_hdr.io_type == 12750 CTL_IO_TASK) ? 12751 io->taskio.tag_num : 12752 io->scsiio.tag_num, 12753 io->io_hdr.flags, 12754 io->io_hdr.status); 12755 } else 12756 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 12757#endif 12758 12759 /* 12760 * This is an internal copy of an I/O, and should not go through 12761 * the normal done processing logic. 12762 */ 12763 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 12764 if (have_lock == 0) 12765 mtx_unlock(&ctl_softc->ctl_lock); 12766 return; 12767 } 12768 12769 /* 12770 * We need to send a msg to the serializing shelf to finish the IO 12771 * as well. We don't send a finish message to the other shelf if 12772 * this is a task management command. Task management commands 12773 * aren't serialized in the OOA queue, but rather just executed on 12774 * both shelf controllers for commands that originated on that 12775 * controller. 12776 */ 12777 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 12778 && (io->io_hdr.io_type != CTL_IO_TASK)) { 12779 union ctl_ha_msg msg_io; 12780 12781 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 12782 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 12783 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 12784 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 12785 } 12786 /* continue on to finish IO */ 12787 } 12788#ifdef CTL_IO_DELAY 12789 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12790 struct ctl_lun *lun; 12791 12792 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12793 12794 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12795 } else { 12796 struct ctl_lun *lun; 12797 12798 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12799 12800 if ((lun != NULL) 12801 && (lun->delay_info.done_delay > 0)) { 12802 struct callout *callout; 12803 12804 callout = (struct callout *)&io->io_hdr.timer_bytes; 12805 callout_init(callout, /*mpsafe*/ 1); 12806 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12807 callout_reset(callout, 12808 lun->delay_info.done_delay * hz, 12809 ctl_done_timer_wakeup, io); 12810 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 12811 lun->delay_info.done_delay = 0; 12812 if (have_lock == 0) 12813 mtx_unlock(&ctl_softc->ctl_lock); 12814 return; 12815 } 12816 } 12817#endif /* CTL_IO_DELAY */ 12818 12819 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 12820 12821#ifdef CTL_DONE_THREAD 12822 if (have_lock == 0) 12823 mtx_unlock(&ctl_softc->ctl_lock); 12824 12825 ctl_wakeup_thread(); 12826#else /* CTL_DONE_THREAD */ 12827 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 12828 xio != NULL; 12829 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 12830 12831 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 12832 12833 ctl_process_done(xio, /*have_lock*/ 1); 12834 } 12835 if (have_lock == 0) 12836 mtx_unlock(&ctl_softc->ctl_lock); 12837#endif /* CTL_DONE_THREAD */ 12838} 12839 12840void 12841ctl_done(union ctl_io *io) 12842{ 12843 ctl_done_lock(io, /*have_lock*/ 0); 12844} 12845 12846int 12847ctl_isc(struct ctl_scsiio *ctsio) 12848{ 12849 struct ctl_lun *lun; 12850 int retval; 12851 12852 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12853 12854 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 12855 12856 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 12857 12858 retval = lun->backend->data_submit((union ctl_io *)ctsio); 12859 12860 return (retval); 12861} 12862 12863 12864static void 12865ctl_work_thread(void *arg) 12866{ 12867 struct ctl_softc *softc; 12868 union ctl_io *io; 12869 struct ctl_be_lun *be_lun; 12870 int retval; 12871 12872 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 12873 12874 softc = (struct ctl_softc *)arg; 12875 if (softc == NULL) 12876 return; 12877 12878 mtx_lock(&softc->ctl_lock); 12879 for (;;) { 12880 retval = 0; 12881 12882 /* 12883 * We handle the queues in this order: 12884 * - task management 12885 * - ISC 12886 * - done queue (to free up resources, unblock other commands) 12887 * - RtR queue 12888 * - incoming queue 12889 * 12890 * If those queues are empty, we break out of the loop and 12891 * go to sleep. 12892 */ 12893 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 12894 if (io != NULL) { 12895 ctl_run_task_queue(softc); 12896 continue; 12897 } 12898 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 12899 if (io != NULL) { 12900 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 12901 ctl_handle_isc(io); 12902 continue; 12903 } 12904 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 12905 if (io != NULL) { 12906 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 12907 /* clear any blocked commands, call fe_done */ 12908 mtx_unlock(&softc->ctl_lock); 12909 /* 12910 * XXX KDM 12911 * Call this without a lock for now. This will 12912 * depend on whether there is any way the FETD can 12913 * sleep or deadlock if called with the CTL lock 12914 * held. 12915 */ 12916 retval = ctl_process_done(io, /*have_lock*/ 0); 12917 mtx_lock(&softc->ctl_lock); 12918 continue; 12919 } 12920 if (!ctl_pause_rtr) { 12921 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 12922 if (io != NULL) { 12923 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 12924 mtx_unlock(&softc->ctl_lock); 12925 goto execute; 12926 } 12927 } 12928 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 12929 if (io != NULL) { 12930 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 12931 mtx_unlock(&softc->ctl_lock); 12932 ctl_scsiio_precheck(softc, &io->scsiio); 12933 mtx_lock(&softc->ctl_lock); 12934 continue; 12935 } 12936 /* 12937 * We might want to move this to a separate thread, so that 12938 * configuration requests (in this case LUN creations) 12939 * won't impact the I/O path. 12940 */ 12941 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 12942 if (be_lun != NULL) { 12943 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 12944 mtx_unlock(&softc->ctl_lock); 12945 ctl_create_lun(be_lun); 12946 mtx_lock(&softc->ctl_lock); 12947 continue; 12948 } 12949 12950 /* XXX KDM use the PDROP flag?? */ 12951 /* Sleep until we have something to do. */ 12952 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "ctl_work", 0); 12953 12954 /* Back to the top of the loop to see what woke us up. */ 12955 continue; 12956 12957execute: 12958 retval = ctl_scsiio(&io->scsiio); 12959 switch (retval) { 12960 case CTL_RETVAL_COMPLETE: 12961 break; 12962 default: 12963 /* 12964 * Probably need to make sure this doesn't happen. 12965 */ 12966 break; 12967 } 12968 mtx_lock(&softc->ctl_lock); 12969 } 12970} 12971 12972void 12973ctl_wakeup_thread() 12974{ 12975 struct ctl_softc *softc; 12976 12977 softc = control_softc; 12978 12979 wakeup(softc); 12980} 12981 12982/* Initialization and failover */ 12983 12984void 12985ctl_init_isc_msg(void) 12986{ 12987 printf("CTL: Still calling this thing\n"); 12988} 12989 12990/* 12991 * Init component 12992 * Initializes component into configuration defined by bootMode 12993 * (see hasc-sv.c) 12994 * returns hasc_Status: 12995 * OK 12996 * ERROR - fatal error 12997 */ 12998static ctl_ha_comp_status 12999ctl_isc_init(struct ctl_ha_component *c) 13000{ 13001 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13002 13003 c->status = ret; 13004 return ret; 13005} 13006 13007/* Start component 13008 * Starts component in state requested. If component starts successfully, 13009 * it must set its own state to the requestrd state 13010 * When requested state is HASC_STATE_HA, the component may refine it 13011 * by adding _SLAVE or _MASTER flags. 13012 * Currently allowed state transitions are: 13013 * UNKNOWN->HA - initial startup 13014 * UNKNOWN->SINGLE - initial startup when no parter detected 13015 * HA->SINGLE - failover 13016 * returns ctl_ha_comp_status: 13017 * OK - component successfully started in requested state 13018 * FAILED - could not start the requested state, failover may 13019 * be possible 13020 * ERROR - fatal error detected, no future startup possible 13021 */ 13022static ctl_ha_comp_status 13023ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13024{ 13025 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13026 13027 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13028 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13029 ctl_is_single = 0; 13030 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13031 != CTL_HA_STATUS_SUCCESS) { 13032 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13033 ret = CTL_HA_COMP_STATUS_ERROR; 13034 } 13035 } else if (CTL_HA_STATE_IS_HA(c->state) 13036 && CTL_HA_STATE_IS_SINGLE(state)){ 13037 // HA->SINGLE transition 13038 ctl_failover(); 13039 ctl_is_single = 1; 13040 } else { 13041 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13042 c->state, state); 13043 ret = CTL_HA_COMP_STATUS_ERROR; 13044 } 13045 if (CTL_HA_STATE_IS_SINGLE(state)) 13046 ctl_is_single = 1; 13047 13048 c->state = state; 13049 c->status = ret; 13050 return ret; 13051} 13052 13053/* 13054 * Quiesce component 13055 * The component must clear any error conditions (set status to OK) and 13056 * prepare itself to another Start call 13057 * returns ctl_ha_comp_status: 13058 * OK 13059 * ERROR 13060 */ 13061static ctl_ha_comp_status 13062ctl_isc_quiesce(struct ctl_ha_component *c) 13063{ 13064 int ret = CTL_HA_COMP_STATUS_OK; 13065 13066 ctl_pause_rtr = 1; 13067 c->status = ret; 13068 return ret; 13069} 13070 13071struct ctl_ha_component ctl_ha_component_ctlisc = 13072{ 13073 .name = "CTL ISC", 13074 .state = CTL_HA_STATE_UNKNOWN, 13075 .init = ctl_isc_init, 13076 .start = ctl_isc_start, 13077 .quiesce = ctl_isc_quiesce 13078}; 13079 13080/* 13081 * vim: ts=8 13082 */ 13083