ctl.c revision 267906
1/*- 2 * Copyright (c) 2003-2009 Silicon Graphics International Corp. 3 * Copyright (c) 2012 The FreeBSD Foundation 4 * All rights reserved. 5 * 6 * Portions of this software were developed by Edward Tomasz Napierala 7 * under sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification. 15 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 16 * substantially similar to the "NO WARRANTY" disclaimer below 17 * ("Disclaimer") and any redistribution must be conditioned upon 18 * including a substantially similar Disclaimer requirement for further 19 * binary redistribution. 20 * 21 * NO WARRANTY 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 26 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 31 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGES. 33 * 34 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl.c#8 $ 35 */ 36/* 37 * CAM Target Layer, a SCSI device emulation subsystem. 38 * 39 * Author: Ken Merry <ken@FreeBSD.org> 40 */ 41 42#define _CTL_C 43 44#include <sys/cdefs.h> 45__FBSDID("$FreeBSD: head/sys/cam/ctl/ctl.c 267906 2014-06-26 09:42:00Z mav $"); 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/types.h> 51#include <sys/kthread.h> 52#include <sys/bio.h> 53#include <sys/fcntl.h> 54#include <sys/lock.h> 55#include <sys/module.h> 56#include <sys/mutex.h> 57#include <sys/condvar.h> 58#include <sys/malloc.h> 59#include <sys/conf.h> 60#include <sys/ioccom.h> 61#include <sys/queue.h> 62#include <sys/sbuf.h> 63#include <sys/smp.h> 64#include <sys/endian.h> 65#include <sys/sysctl.h> 66 67#include <cam/cam.h> 68#include <cam/scsi/scsi_all.h> 69#include <cam/scsi/scsi_da.h> 70#include <cam/ctl/ctl_io.h> 71#include <cam/ctl/ctl.h> 72#include <cam/ctl/ctl_frontend.h> 73#include <cam/ctl/ctl_frontend_internal.h> 74#include <cam/ctl/ctl_util.h> 75#include <cam/ctl/ctl_backend.h> 76#include <cam/ctl/ctl_ioctl.h> 77#include <cam/ctl/ctl_ha.h> 78#include <cam/ctl/ctl_private.h> 79#include <cam/ctl/ctl_debug.h> 80#include <cam/ctl/ctl_scsi_all.h> 81#include <cam/ctl/ctl_error.h> 82 83struct ctl_softc *control_softc = NULL; 84 85/* 86 * Size and alignment macros needed for Copan-specific HA hardware. These 87 * can go away when the HA code is re-written, and uses busdma for any 88 * hardware. 89 */ 90#define CTL_ALIGN_8B(target, source, type) \ 91 if (((uint32_t)source & 0x7) != 0) \ 92 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 93 else \ 94 target = (type)source; 95 96#define CTL_SIZE_8B(target, size) \ 97 if ((size & 0x7) != 0) \ 98 target = size + (0x8 - (size & 0x7)); \ 99 else \ 100 target = size; 101 102#define CTL_ALIGN_8B_MARGIN 16 103 104/* 105 * Template mode pages. 106 */ 107 108/* 109 * Note that these are default values only. The actual values will be 110 * filled in when the user does a mode sense. 111 */ 112static struct copan_power_subpage power_page_default = { 113 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 114 /*subpage*/ PWR_SUBPAGE_CODE, 115 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 116 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 117 /*page_version*/ PWR_VERSION, 118 /* total_luns */ 26, 119 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 120 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 121 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 122 0, 0, 0, 0, 0, 0} 123}; 124 125static struct copan_power_subpage power_page_changeable = { 126 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 127 /*subpage*/ PWR_SUBPAGE_CODE, 128 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 129 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 130 /*page_version*/ 0, 131 /* total_luns */ 0, 132 /* max_active_luns*/ 0, 133 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 134 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 135 0, 0, 0, 0, 0, 0} 136}; 137 138static struct copan_aps_subpage aps_page_default = { 139 APS_PAGE_CODE | SMPH_SPF, //page_code 140 APS_SUBPAGE_CODE, //subpage 141 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 142 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 143 APS_VERSION, //page_version 144 0, //lock_active 145 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 146 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 147 0, 0, 0, 0, 0} //reserved 148}; 149 150static struct copan_aps_subpage aps_page_changeable = { 151 APS_PAGE_CODE | SMPH_SPF, //page_code 152 APS_SUBPAGE_CODE, //subpage 153 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 154 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 155 0, //page_version 156 0, //lock_active 157 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 158 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 159 0, 0, 0, 0, 0} //reserved 160}; 161 162static struct copan_debugconf_subpage debugconf_page_default = { 163 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 164 DBGCNF_SUBPAGE_CODE, /* subpage */ 165 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 166 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 167 DBGCNF_VERSION, /* page_version */ 168 {CTL_TIME_IO_DEFAULT_SECS>>8, 169 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 170}; 171 172static struct copan_debugconf_subpage debugconf_page_changeable = { 173 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 174 DBGCNF_SUBPAGE_CODE, /* subpage */ 175 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 176 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 177 0, /* page_version */ 178 {0xff,0xff}, /* ctl_time_io_secs */ 179}; 180 181static struct scsi_format_page format_page_default = { 182 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 183 /*page_length*/sizeof(struct scsi_format_page) - 2, 184 /*tracks_per_zone*/ {0, 0}, 185 /*alt_sectors_per_zone*/ {0, 0}, 186 /*alt_tracks_per_zone*/ {0, 0}, 187 /*alt_tracks_per_lun*/ {0, 0}, 188 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 189 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 190 /*bytes_per_sector*/ {0, 0}, 191 /*interleave*/ {0, 0}, 192 /*track_skew*/ {0, 0}, 193 /*cylinder_skew*/ {0, 0}, 194 /*flags*/ SFP_HSEC, 195 /*reserved*/ {0, 0, 0} 196}; 197 198static struct scsi_format_page format_page_changeable = { 199 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 200 /*page_length*/sizeof(struct scsi_format_page) - 2, 201 /*tracks_per_zone*/ {0, 0}, 202 /*alt_sectors_per_zone*/ {0, 0}, 203 /*alt_tracks_per_zone*/ {0, 0}, 204 /*alt_tracks_per_lun*/ {0, 0}, 205 /*sectors_per_track*/ {0, 0}, 206 /*bytes_per_sector*/ {0, 0}, 207 /*interleave*/ {0, 0}, 208 /*track_skew*/ {0, 0}, 209 /*cylinder_skew*/ {0, 0}, 210 /*flags*/ 0, 211 /*reserved*/ {0, 0, 0} 212}; 213 214static struct scsi_rigid_disk_page rigid_disk_page_default = { 215 /*page_code*/SMS_RIGID_DISK_PAGE, 216 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 217 /*cylinders*/ {0, 0, 0}, 218 /*heads*/ CTL_DEFAULT_HEADS, 219 /*start_write_precomp*/ {0, 0, 0}, 220 /*start_reduced_current*/ {0, 0, 0}, 221 /*step_rate*/ {0, 0}, 222 /*landing_zone_cylinder*/ {0, 0, 0}, 223 /*rpl*/ SRDP_RPL_DISABLED, 224 /*rotational_offset*/ 0, 225 /*reserved1*/ 0, 226 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 227 CTL_DEFAULT_ROTATION_RATE & 0xff}, 228 /*reserved2*/ {0, 0} 229}; 230 231static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 232 /*page_code*/SMS_RIGID_DISK_PAGE, 233 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 234 /*cylinders*/ {0, 0, 0}, 235 /*heads*/ 0, 236 /*start_write_precomp*/ {0, 0, 0}, 237 /*start_reduced_current*/ {0, 0, 0}, 238 /*step_rate*/ {0, 0}, 239 /*landing_zone_cylinder*/ {0, 0, 0}, 240 /*rpl*/ 0, 241 /*rotational_offset*/ 0, 242 /*reserved1*/ 0, 243 /*rotation_rate*/ {0, 0}, 244 /*reserved2*/ {0, 0} 245}; 246 247static struct scsi_caching_page caching_page_default = { 248 /*page_code*/SMS_CACHING_PAGE, 249 /*page_length*/sizeof(struct scsi_caching_page) - 2, 250 /*flags1*/ SCP_DISC | SCP_WCE, 251 /*ret_priority*/ 0, 252 /*disable_pf_transfer_len*/ {0xff, 0xff}, 253 /*min_prefetch*/ {0, 0}, 254 /*max_prefetch*/ {0xff, 0xff}, 255 /*max_pf_ceiling*/ {0xff, 0xff}, 256 /*flags2*/ 0, 257 /*cache_segments*/ 0, 258 /*cache_seg_size*/ {0, 0}, 259 /*reserved*/ 0, 260 /*non_cache_seg_size*/ {0, 0, 0} 261}; 262 263static struct scsi_caching_page caching_page_changeable = { 264 /*page_code*/SMS_CACHING_PAGE, 265 /*page_length*/sizeof(struct scsi_caching_page) - 2, 266 /*flags1*/ 0, 267 /*ret_priority*/ 0, 268 /*disable_pf_transfer_len*/ {0, 0}, 269 /*min_prefetch*/ {0, 0}, 270 /*max_prefetch*/ {0, 0}, 271 /*max_pf_ceiling*/ {0, 0}, 272 /*flags2*/ 0, 273 /*cache_segments*/ 0, 274 /*cache_seg_size*/ {0, 0}, 275 /*reserved*/ 0, 276 /*non_cache_seg_size*/ {0, 0, 0} 277}; 278 279static struct scsi_control_page control_page_default = { 280 /*page_code*/SMS_CONTROL_MODE_PAGE, 281 /*page_length*/sizeof(struct scsi_control_page) - 2, 282 /*rlec*/0, 283 /*queue_flags*/0, 284 /*eca_and_aen*/0, 285 /*reserved*/0, 286 /*aen_holdoff_period*/{0, 0} 287}; 288 289static struct scsi_control_page control_page_changeable = { 290 /*page_code*/SMS_CONTROL_MODE_PAGE, 291 /*page_length*/sizeof(struct scsi_control_page) - 2, 292 /*rlec*/SCP_DSENSE, 293 /*queue_flags*/0, 294 /*eca_and_aen*/0, 295 /*reserved*/0, 296 /*aen_holdoff_period*/{0, 0} 297}; 298 299 300/* 301 * XXX KDM move these into the softc. 302 */ 303static int rcv_sync_msg; 304static int persis_offset; 305static uint8_t ctl_pause_rtr; 306static int ctl_is_single = 1; 307static int index_to_aps_page; 308 309SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 310static int worker_threads = -1; 311TUNABLE_INT("kern.cam.ctl.worker_threads", &worker_threads); 312SYSCTL_INT(_kern_cam_ctl, OID_AUTO, worker_threads, CTLFLAG_RDTUN, 313 &worker_threads, 1, "Number of worker threads"); 314static int verbose = 0; 315TUNABLE_INT("kern.cam.ctl.verbose", &verbose); 316SYSCTL_INT(_kern_cam_ctl, OID_AUTO, verbose, CTLFLAG_RWTUN, 317 &verbose, 0, "Show SCSI errors returned to initiator"); 318 319/* 320 * Serial number (0x80), device id (0x83), supported pages (0x00), 321 * Block limits (0xB0) and Logical Block Provisioning (0xB2) 322 */ 323#define SCSI_EVPD_NUM_SUPPORTED_PAGES 5 324 325static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 326 int param); 327static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 328static int ctl_init(void); 329void ctl_shutdown(void); 330static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 331static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 332static void ctl_ioctl_online(void *arg); 333static void ctl_ioctl_offline(void *arg); 334static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 335static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 336static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 337static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 338static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 339static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio); 340static int ctl_ioctl_submit_wait(union ctl_io *io); 341static void ctl_ioctl_datamove(union ctl_io *io); 342static void ctl_ioctl_done(union ctl_io *io); 343static void ctl_ioctl_hard_startstop_callback(void *arg, 344 struct cfi_metatask *metatask); 345static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 346static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 347 struct ctl_ooa *ooa_hdr, 348 struct ctl_ooa_entry *kern_entries); 349static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 350 struct thread *td); 351uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 352uint32_t ctl_port_idx(int port_num); 353#ifdef unused 354static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 355 uint32_t targ_target, uint32_t targ_lun, 356 int can_wait); 357static void ctl_kfree_io(union ctl_io *io); 358#endif /* unused */ 359static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 360 struct ctl_be_lun *be_lun, struct ctl_id target_id); 361static int ctl_free_lun(struct ctl_lun *lun); 362static void ctl_create_lun(struct ctl_be_lun *be_lun); 363/** 364static void ctl_failover_change_pages(struct ctl_softc *softc, 365 struct ctl_scsiio *ctsio, int master); 366**/ 367 368static int ctl_do_mode_select(union ctl_io *io); 369static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 370 uint64_t res_key, uint64_t sa_res_key, 371 uint8_t type, uint32_t residx, 372 struct ctl_scsiio *ctsio, 373 struct scsi_per_res_out *cdb, 374 struct scsi_per_res_out_parms* param); 375static void ctl_pro_preempt_other(struct ctl_lun *lun, 376 union ctl_ha_msg *msg); 377static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 378static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 379static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 380static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 381static int ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, 382 int alloc_len); 383static int ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len); 384static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 385static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 386static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 387static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 388static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 389 union ctl_io *ooa_io); 390static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 391 union ctl_io *starting_io); 392static int ctl_check_blocked(struct ctl_lun *lun); 393static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 394 struct ctl_lun *lun, 395 struct ctl_cmd_entry *entry, 396 struct ctl_scsiio *ctsio); 397//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 398static void ctl_failover(void); 399static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 400 struct ctl_scsiio *ctsio); 401static int ctl_scsiio(struct ctl_scsiio *ctsio); 402 403static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 404static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 405 ctl_ua_type ua_type); 406static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 407 ctl_ua_type ua_type); 408static int ctl_abort_task(union ctl_io *io); 409static void ctl_run_task(union ctl_io *io); 410#ifdef CTL_IO_DELAY 411static void ctl_datamove_timer_wakeup(void *arg); 412static void ctl_done_timer_wakeup(void *arg); 413#endif /* CTL_IO_DELAY */ 414 415static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 416static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 417static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 418static void ctl_datamove_remote_write(union ctl_io *io); 419static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 420static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 421static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 422static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 423 ctl_ha_dt_cb callback); 424static void ctl_datamove_remote_read(union ctl_io *io); 425static void ctl_datamove_remote(union ctl_io *io); 426static int ctl_process_done(union ctl_io *io); 427static void ctl_lun_thread(void *arg); 428static void ctl_work_thread(void *arg); 429static void ctl_enqueue_incoming(union ctl_io *io); 430static void ctl_enqueue_rtr(union ctl_io *io); 431static void ctl_enqueue_done(union ctl_io *io); 432static void ctl_enqueue_isc(union ctl_io *io); 433 434/* 435 * Load the serialization table. This isn't very pretty, but is probably 436 * the easiest way to do it. 437 */ 438#include "ctl_ser_table.c" 439 440/* 441 * We only need to define open, close and ioctl routines for this driver. 442 */ 443static struct cdevsw ctl_cdevsw = { 444 .d_version = D_VERSION, 445 .d_flags = 0, 446 .d_open = ctl_open, 447 .d_close = ctl_close, 448 .d_ioctl = ctl_ioctl, 449 .d_name = "ctl", 450}; 451 452 453MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 454 455static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 456 457static moduledata_t ctl_moduledata = { 458 "ctl", 459 ctl_module_event_handler, 460 NULL 461}; 462 463DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 464MODULE_VERSION(ctl, 1); 465 466static void 467ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 468 union ctl_ha_msg *msg_info) 469{ 470 struct ctl_scsiio *ctsio; 471 472 if (msg_info->hdr.original_sc == NULL) { 473 printf("%s: original_sc == NULL!\n", __func__); 474 /* XXX KDM now what? */ 475 return; 476 } 477 478 ctsio = &msg_info->hdr.original_sc->scsiio; 479 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 480 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 481 ctsio->io_hdr.status = msg_info->hdr.status; 482 ctsio->scsi_status = msg_info->scsi.scsi_status; 483 ctsio->sense_len = msg_info->scsi.sense_len; 484 ctsio->sense_residual = msg_info->scsi.sense_residual; 485 ctsio->residual = msg_info->scsi.residual; 486 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 487 sizeof(ctsio->sense_data)); 488 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 489 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 490 ctl_enqueue_isc((union ctl_io *)ctsio); 491} 492 493static void 494ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 495 union ctl_ha_msg *msg_info) 496{ 497 struct ctl_scsiio *ctsio; 498 499 if (msg_info->hdr.serializing_sc == NULL) { 500 printf("%s: serializing_sc == NULL!\n", __func__); 501 /* XXX KDM now what? */ 502 return; 503 } 504 505 ctsio = &msg_info->hdr.serializing_sc->scsiio; 506#if 0 507 /* 508 * Attempt to catch the situation where an I/O has 509 * been freed, and we're using it again. 510 */ 511 if (ctsio->io_hdr.io_type == 0xff) { 512 union ctl_io *tmp_io; 513 tmp_io = (union ctl_io *)ctsio; 514 printf("%s: %p use after free!\n", __func__, 515 ctsio); 516 printf("%s: type %d msg %d cdb %x iptl: " 517 "%d:%d:%d:%d tag 0x%04x " 518 "flag %#x status %x\n", 519 __func__, 520 tmp_io->io_hdr.io_type, 521 tmp_io->io_hdr.msg_type, 522 tmp_io->scsiio.cdb[0], 523 tmp_io->io_hdr.nexus.initid.id, 524 tmp_io->io_hdr.nexus.targ_port, 525 tmp_io->io_hdr.nexus.targ_target.id, 526 tmp_io->io_hdr.nexus.targ_lun, 527 (tmp_io->io_hdr.io_type == 528 CTL_IO_TASK) ? 529 tmp_io->taskio.tag_num : 530 tmp_io->scsiio.tag_num, 531 tmp_io->io_hdr.flags, 532 tmp_io->io_hdr.status); 533 } 534#endif 535 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 536 ctl_enqueue_isc((union ctl_io *)ctsio); 537} 538 539/* 540 * ISC (Inter Shelf Communication) event handler. Events from the HA 541 * subsystem come in here. 542 */ 543static void 544ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 545{ 546 struct ctl_softc *ctl_softc; 547 union ctl_io *io; 548 struct ctl_prio *presio; 549 ctl_ha_status isc_status; 550 551 ctl_softc = control_softc; 552 io = NULL; 553 554 555#if 0 556 printf("CTL: Isc Msg event %d\n", event); 557#endif 558 if (event == CTL_HA_EVT_MSG_RECV) { 559 union ctl_ha_msg msg_info; 560 561 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 562 sizeof(msg_info), /*wait*/ 0); 563#if 0 564 printf("CTL: msg_type %d\n", msg_info.msg_type); 565#endif 566 if (isc_status != 0) { 567 printf("Error receiving message, status = %d\n", 568 isc_status); 569 return; 570 } 571 572 switch (msg_info.hdr.msg_type) { 573 case CTL_MSG_SERIALIZE: 574#if 0 575 printf("Serialize\n"); 576#endif 577 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 578 if (io == NULL) { 579 printf("ctl_isc_event_handler: can't allocate " 580 "ctl_io!\n"); 581 /* Bad Juju */ 582 /* Need to set busy and send msg back */ 583 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 584 msg_info.hdr.status = CTL_SCSI_ERROR; 585 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 586 msg_info.scsi.sense_len = 0; 587 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 588 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 589 } 590 goto bailout; 591 } 592 ctl_zero_io(io); 593 // populate ctsio from msg_info 594 io->io_hdr.io_type = CTL_IO_SCSI; 595 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 596 io->io_hdr.original_sc = msg_info.hdr.original_sc; 597#if 0 598 printf("pOrig %x\n", (int)msg_info.original_sc); 599#endif 600 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 601 CTL_FLAG_IO_ACTIVE; 602 /* 603 * If we're in serialization-only mode, we don't 604 * want to go through full done processing. Thus 605 * the COPY flag. 606 * 607 * XXX KDM add another flag that is more specific. 608 */ 609 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 610 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 611 io->io_hdr.nexus = msg_info.hdr.nexus; 612#if 0 613 printf("targ %d, port %d, iid %d, lun %d\n", 614 io->io_hdr.nexus.targ_target.id, 615 io->io_hdr.nexus.targ_port, 616 io->io_hdr.nexus.initid.id, 617 io->io_hdr.nexus.targ_lun); 618#endif 619 io->scsiio.tag_num = msg_info.scsi.tag_num; 620 io->scsiio.tag_type = msg_info.scsi.tag_type; 621 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 622 CTL_MAX_CDBLEN); 623 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 624 struct ctl_cmd_entry *entry; 625 uint8_t opcode; 626 627 opcode = io->scsiio.cdb[0]; 628 entry = &ctl_cmd_table[opcode]; 629 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 630 io->io_hdr.flags |= 631 entry->flags & CTL_FLAG_DATA_MASK; 632 } 633 ctl_enqueue_isc(io); 634 break; 635 636 /* Performed on the Originating SC, XFER mode only */ 637 case CTL_MSG_DATAMOVE: { 638 struct ctl_sg_entry *sgl; 639 int i, j; 640 641 io = msg_info.hdr.original_sc; 642 if (io == NULL) { 643 printf("%s: original_sc == NULL!\n", __func__); 644 /* XXX KDM do something here */ 645 break; 646 } 647 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 648 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 649 /* 650 * Keep track of this, we need to send it back over 651 * when the datamove is complete. 652 */ 653 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 654 655 if (msg_info.dt.sg_sequence == 0) { 656 /* 657 * XXX KDM we use the preallocated S/G list 658 * here, but we'll need to change this to 659 * dynamic allocation if we need larger S/G 660 * lists. 661 */ 662 if (msg_info.dt.kern_sg_entries > 663 sizeof(io->io_hdr.remote_sglist) / 664 sizeof(io->io_hdr.remote_sglist[0])) { 665 printf("%s: number of S/G entries " 666 "needed %u > allocated num %zd\n", 667 __func__, 668 msg_info.dt.kern_sg_entries, 669 sizeof(io->io_hdr.remote_sglist)/ 670 sizeof(io->io_hdr.remote_sglist[0])); 671 672 /* 673 * XXX KDM send a message back to 674 * the other side to shut down the 675 * DMA. The error will come back 676 * through via the normal channel. 677 */ 678 break; 679 } 680 sgl = io->io_hdr.remote_sglist; 681 memset(sgl, 0, 682 sizeof(io->io_hdr.remote_sglist)); 683 684 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 685 686 io->scsiio.kern_sg_entries = 687 msg_info.dt.kern_sg_entries; 688 io->scsiio.rem_sg_entries = 689 msg_info.dt.kern_sg_entries; 690 io->scsiio.kern_data_len = 691 msg_info.dt.kern_data_len; 692 io->scsiio.kern_total_len = 693 msg_info.dt.kern_total_len; 694 io->scsiio.kern_data_resid = 695 msg_info.dt.kern_data_resid; 696 io->scsiio.kern_rel_offset = 697 msg_info.dt.kern_rel_offset; 698 /* 699 * Clear out per-DMA flags. 700 */ 701 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 702 /* 703 * Add per-DMA flags that are set for this 704 * particular DMA request. 705 */ 706 io->io_hdr.flags |= msg_info.dt.flags & 707 CTL_FLAG_RDMA_MASK; 708 } else 709 sgl = (struct ctl_sg_entry *) 710 io->scsiio.kern_data_ptr; 711 712 for (i = msg_info.dt.sent_sg_entries, j = 0; 713 i < (msg_info.dt.sent_sg_entries + 714 msg_info.dt.cur_sg_entries); i++, j++) { 715 sgl[i].addr = msg_info.dt.sg_list[j].addr; 716 sgl[i].len = msg_info.dt.sg_list[j].len; 717 718#if 0 719 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 720 __func__, 721 msg_info.dt.sg_list[j].addr, 722 msg_info.dt.sg_list[j].len, 723 sgl[i].addr, sgl[i].len, j, i); 724#endif 725 } 726#if 0 727 memcpy(&sgl[msg_info.dt.sent_sg_entries], 728 msg_info.dt.sg_list, 729 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 730#endif 731 732 /* 733 * If this is the last piece of the I/O, we've got 734 * the full S/G list. Queue processing in the thread. 735 * Otherwise wait for the next piece. 736 */ 737 if (msg_info.dt.sg_last != 0) 738 ctl_enqueue_isc(io); 739 break; 740 } 741 /* Performed on the Serializing (primary) SC, XFER mode only */ 742 case CTL_MSG_DATAMOVE_DONE: { 743 if (msg_info.hdr.serializing_sc == NULL) { 744 printf("%s: serializing_sc == NULL!\n", 745 __func__); 746 /* XXX KDM now what? */ 747 break; 748 } 749 /* 750 * We grab the sense information here in case 751 * there was a failure, so we can return status 752 * back to the initiator. 753 */ 754 io = msg_info.hdr.serializing_sc; 755 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 756 io->io_hdr.status = msg_info.hdr.status; 757 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 758 io->scsiio.sense_len = msg_info.scsi.sense_len; 759 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 760 io->io_hdr.port_status = msg_info.scsi.fetd_status; 761 io->scsiio.residual = msg_info.scsi.residual; 762 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 763 sizeof(io->scsiio.sense_data)); 764 ctl_enqueue_isc(io); 765 break; 766 } 767 768 /* Preformed on Originating SC, SER_ONLY mode */ 769 case CTL_MSG_R2R: 770 io = msg_info.hdr.original_sc; 771 if (io == NULL) { 772 printf("%s: Major Bummer\n", __func__); 773 return; 774 } else { 775#if 0 776 printf("pOrig %x\n",(int) ctsio); 777#endif 778 } 779 io->io_hdr.msg_type = CTL_MSG_R2R; 780 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 781 ctl_enqueue_isc(io); 782 break; 783 784 /* 785 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 786 * mode. 787 * Performed on the Originating (i.e. secondary) SC in XFER 788 * mode 789 */ 790 case CTL_MSG_FINISH_IO: 791 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 792 ctl_isc_handler_finish_xfer(ctl_softc, 793 &msg_info); 794 else 795 ctl_isc_handler_finish_ser_only(ctl_softc, 796 &msg_info); 797 break; 798 799 /* Preformed on Originating SC */ 800 case CTL_MSG_BAD_JUJU: 801 io = msg_info.hdr.original_sc; 802 if (io == NULL) { 803 printf("%s: Bad JUJU!, original_sc is NULL!\n", 804 __func__); 805 break; 806 } 807 ctl_copy_sense_data(&msg_info, io); 808 /* 809 * IO should have already been cleaned up on other 810 * SC so clear this flag so we won't send a message 811 * back to finish the IO there. 812 */ 813 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 814 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 815 816 /* io = msg_info.hdr.serializing_sc; */ 817 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 818 ctl_enqueue_isc(io); 819 break; 820 821 /* Handle resets sent from the other side */ 822 case CTL_MSG_MANAGE_TASKS: { 823 struct ctl_taskio *taskio; 824 taskio = (struct ctl_taskio *)ctl_alloc_io( 825 (void *)ctl_softc->othersc_pool); 826 if (taskio == NULL) { 827 printf("ctl_isc_event_handler: can't allocate " 828 "ctl_io!\n"); 829 /* Bad Juju */ 830 /* should I just call the proper reset func 831 here??? */ 832 goto bailout; 833 } 834 ctl_zero_io((union ctl_io *)taskio); 835 taskio->io_hdr.io_type = CTL_IO_TASK; 836 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 837 taskio->io_hdr.nexus = msg_info.hdr.nexus; 838 taskio->task_action = msg_info.task.task_action; 839 taskio->tag_num = msg_info.task.tag_num; 840 taskio->tag_type = msg_info.task.tag_type; 841#ifdef CTL_TIME_IO 842 taskio->io_hdr.start_time = time_uptime; 843 getbintime(&taskio->io_hdr.start_bt); 844#if 0 845 cs_prof_gettime(&taskio->io_hdr.start_ticks); 846#endif 847#endif /* CTL_TIME_IO */ 848 ctl_run_task((union ctl_io *)taskio); 849 break; 850 } 851 /* Persistent Reserve action which needs attention */ 852 case CTL_MSG_PERS_ACTION: 853 presio = (struct ctl_prio *)ctl_alloc_io( 854 (void *)ctl_softc->othersc_pool); 855 if (presio == NULL) { 856 printf("ctl_isc_event_handler: can't allocate " 857 "ctl_io!\n"); 858 /* Bad Juju */ 859 /* Need to set busy and send msg back */ 860 goto bailout; 861 } 862 ctl_zero_io((union ctl_io *)presio); 863 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 864 presio->pr_msg = msg_info.pr; 865 ctl_enqueue_isc((union ctl_io *)presio); 866 break; 867 case CTL_MSG_SYNC_FE: 868 rcv_sync_msg = 1; 869 break; 870 case CTL_MSG_APS_LOCK: { 871 // It's quicker to execute this then to 872 // queue it. 873 struct ctl_lun *lun; 874 struct ctl_page_index *page_index; 875 struct copan_aps_subpage *current_sp; 876 uint32_t targ_lun; 877 878 targ_lun = msg_info.hdr.nexus.targ_mapped_lun; 879 lun = ctl_softc->ctl_luns[targ_lun]; 880 mtx_lock(&lun->lun_lock); 881 page_index = &lun->mode_pages.index[index_to_aps_page]; 882 current_sp = (struct copan_aps_subpage *) 883 (page_index->page_data + 884 (page_index->page_len * CTL_PAGE_CURRENT)); 885 886 current_sp->lock_active = msg_info.aps.lock_flag; 887 mtx_unlock(&lun->lun_lock); 888 break; 889 } 890 default: 891 printf("How did I get here?\n"); 892 } 893 } else if (event == CTL_HA_EVT_MSG_SENT) { 894 if (param != CTL_HA_STATUS_SUCCESS) { 895 printf("Bad status from ctl_ha_msg_send status %d\n", 896 param); 897 } 898 return; 899 } else if (event == CTL_HA_EVT_DISCONNECT) { 900 printf("CTL: Got a disconnect from Isc\n"); 901 return; 902 } else { 903 printf("ctl_isc_event_handler: Unknown event %d\n", event); 904 return; 905 } 906 907bailout: 908 return; 909} 910 911static void 912ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 913{ 914 struct scsi_sense_data *sense; 915 916 sense = &dest->scsiio.sense_data; 917 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 918 dest->scsiio.scsi_status = src->scsi.scsi_status; 919 dest->scsiio.sense_len = src->scsi.sense_len; 920 dest->io_hdr.status = src->hdr.status; 921} 922 923static int 924ctl_init(void) 925{ 926 struct ctl_softc *softc; 927 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 928 struct ctl_frontend *fe; 929 uint8_t sc_id =0; 930 int i, error, retval; 931 //int isc_retval; 932 933 retval = 0; 934 ctl_pause_rtr = 0; 935 rcv_sync_msg = 0; 936 937 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 938 M_WAITOK | M_ZERO); 939 softc = control_softc; 940 941 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 942 "cam/ctl"); 943 944 softc->dev->si_drv1 = softc; 945 946 /* 947 * By default, return a "bad LUN" peripheral qualifier for unknown 948 * LUNs. The user can override this default using the tunable or 949 * sysctl. See the comment in ctl_inquiry_std() for more details. 950 */ 951 softc->inquiry_pq_no_lun = 1; 952 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 953 &softc->inquiry_pq_no_lun); 954 sysctl_ctx_init(&softc->sysctl_ctx); 955 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 956 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 957 CTLFLAG_RD, 0, "CAM Target Layer"); 958 959 if (softc->sysctl_tree == NULL) { 960 printf("%s: unable to allocate sysctl tree\n", __func__); 961 destroy_dev(softc->dev); 962 free(control_softc, M_DEVBUF); 963 control_softc = NULL; 964 return (ENOMEM); 965 } 966 967 SYSCTL_ADD_INT(&softc->sysctl_ctx, 968 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 969 "inquiry_pq_no_lun", CTLFLAG_RW, 970 &softc->inquiry_pq_no_lun, 0, 971 "Report no lun possible for invalid LUNs"); 972 973 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 974 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 975 softc->open_count = 0; 976 977 /* 978 * Default to actually sending a SYNCHRONIZE CACHE command down to 979 * the drive. 980 */ 981 softc->flags = CTL_FLAG_REAL_SYNC; 982 983 /* 984 * In Copan's HA scheme, the "master" and "slave" roles are 985 * figured out through the slot the controller is in. Although it 986 * is an active/active system, someone has to be in charge. 987 */ 988#ifdef NEEDTOPORT 989 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 990#endif 991 992 if (sc_id == 0) { 993 softc->flags |= CTL_FLAG_MASTER_SHELF; 994 persis_offset = 0; 995 } else 996 persis_offset = CTL_MAX_INITIATORS; 997 998 /* 999 * XXX KDM need to figure out where we want to get our target ID 1000 * and WWID. Is it different on each port? 1001 */ 1002 softc->target.id = 0; 1003 softc->target.wwid[0] = 0x12345678; 1004 softc->target.wwid[1] = 0x87654321; 1005 STAILQ_INIT(&softc->lun_list); 1006 STAILQ_INIT(&softc->pending_lun_queue); 1007 STAILQ_INIT(&softc->fe_list); 1008 STAILQ_INIT(&softc->be_list); 1009 STAILQ_INIT(&softc->io_pools); 1010 1011 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1012 &internal_pool)!= 0){ 1013 printf("ctl: can't allocate %d entry internal pool, " 1014 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1015 return (ENOMEM); 1016 } 1017 1018 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1019 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1020 printf("ctl: can't allocate %d entry emergency pool, " 1021 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1022 ctl_pool_free(internal_pool); 1023 return (ENOMEM); 1024 } 1025 1026 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1027 &other_pool) != 0) 1028 { 1029 printf("ctl: can't allocate %d entry other SC pool, " 1030 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1031 ctl_pool_free(internal_pool); 1032 ctl_pool_free(emergency_pool); 1033 return (ENOMEM); 1034 } 1035 1036 softc->internal_pool = internal_pool; 1037 softc->emergency_pool = emergency_pool; 1038 softc->othersc_pool = other_pool; 1039 1040 if (worker_threads <= 0) 1041 worker_threads = max(1, mp_ncpus / 4); 1042 if (worker_threads > CTL_MAX_THREADS) 1043 worker_threads = CTL_MAX_THREADS; 1044 1045 for (i = 0; i < worker_threads; i++) { 1046 struct ctl_thread *thr = &softc->threads[i]; 1047 1048 mtx_init(&thr->queue_lock, "CTL queue mutex", NULL, MTX_DEF); 1049 thr->ctl_softc = softc; 1050 STAILQ_INIT(&thr->incoming_queue); 1051 STAILQ_INIT(&thr->rtr_queue); 1052 STAILQ_INIT(&thr->done_queue); 1053 STAILQ_INIT(&thr->isc_queue); 1054 1055 error = kproc_kthread_add(ctl_work_thread, thr, 1056 &softc->ctl_proc, &thr->thread, 0, 0, "ctl", "work%d", i); 1057 if (error != 0) { 1058 printf("error creating CTL work thread!\n"); 1059 ctl_pool_free(internal_pool); 1060 ctl_pool_free(emergency_pool); 1061 ctl_pool_free(other_pool); 1062 return (error); 1063 } 1064 } 1065 error = kproc_kthread_add(ctl_lun_thread, softc, 1066 &softc->ctl_proc, NULL, 0, 0, "ctl", "lun"); 1067 if (error != 0) { 1068 printf("error creating CTL lun thread!\n"); 1069 ctl_pool_free(internal_pool); 1070 ctl_pool_free(emergency_pool); 1071 ctl_pool_free(other_pool); 1072 return (error); 1073 } 1074 if (bootverbose) 1075 printf("ctl: CAM Target Layer loaded\n"); 1076 1077 /* 1078 * Initialize the initiator and portname mappings 1079 */ 1080 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1081 1082 /* 1083 * Initialize the ioctl front end. 1084 */ 1085 fe = &softc->ioctl_info.fe; 1086 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1087 fe->port_type = CTL_PORT_IOCTL; 1088 fe->num_requested_ctl_io = 100; 1089 fe->port_name = softc->ioctl_info.port_name; 1090 fe->port_online = ctl_ioctl_online; 1091 fe->port_offline = ctl_ioctl_offline; 1092 fe->onoff_arg = &softc->ioctl_info; 1093 fe->targ_enable = ctl_ioctl_targ_enable; 1094 fe->targ_disable = ctl_ioctl_targ_disable; 1095 fe->lun_enable = ctl_ioctl_lun_enable; 1096 fe->lun_disable = ctl_ioctl_lun_disable; 1097 fe->targ_lun_arg = &softc->ioctl_info; 1098 fe->fe_datamove = ctl_ioctl_datamove; 1099 fe->fe_done = ctl_ioctl_done; 1100 fe->max_targets = 15; 1101 fe->max_target_id = 15; 1102 1103 if (ctl_frontend_register(&softc->ioctl_info.fe, 1104 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1105 printf("ctl: ioctl front end registration failed, will " 1106 "continue anyway\n"); 1107 } 1108 1109#ifdef CTL_IO_DELAY 1110 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1111 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1112 sizeof(struct callout), CTL_TIMER_BYTES); 1113 return (EINVAL); 1114 } 1115#endif /* CTL_IO_DELAY */ 1116 1117 return (0); 1118} 1119 1120void 1121ctl_shutdown(void) 1122{ 1123 struct ctl_softc *softc; 1124 struct ctl_lun *lun, *next_lun; 1125 struct ctl_io_pool *pool; 1126 1127 softc = (struct ctl_softc *)control_softc; 1128 1129 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1130 printf("ctl: ioctl front end deregistration failed\n"); 1131 1132 mtx_lock(&softc->ctl_lock); 1133 1134 /* 1135 * Free up each LUN. 1136 */ 1137 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1138 next_lun = STAILQ_NEXT(lun, links); 1139 ctl_free_lun(lun); 1140 } 1141 1142 mtx_unlock(&softc->ctl_lock); 1143 1144 /* 1145 * This will rip the rug out from under any FETDs or anyone else 1146 * that has a pool allocated. Since we increment our module 1147 * refcount any time someone outside the main CTL module allocates 1148 * a pool, we shouldn't have any problems here. The user won't be 1149 * able to unload the CTL module until client modules have 1150 * successfully unloaded. 1151 */ 1152 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1153 ctl_pool_free(pool); 1154 1155#if 0 1156 ctl_shutdown_thread(softc->work_thread); 1157 mtx_destroy(&softc->queue_lock); 1158#endif 1159 1160 mtx_destroy(&softc->pool_lock); 1161 mtx_destroy(&softc->ctl_lock); 1162 1163 destroy_dev(softc->dev); 1164 1165 sysctl_ctx_free(&softc->sysctl_ctx); 1166 1167 free(control_softc, M_DEVBUF); 1168 control_softc = NULL; 1169 1170 if (bootverbose) 1171 printf("ctl: CAM Target Layer unloaded\n"); 1172} 1173 1174static int 1175ctl_module_event_handler(module_t mod, int what, void *arg) 1176{ 1177 1178 switch (what) { 1179 case MOD_LOAD: 1180 return (ctl_init()); 1181 case MOD_UNLOAD: 1182 return (EBUSY); 1183 default: 1184 return (EOPNOTSUPP); 1185 } 1186} 1187 1188/* 1189 * XXX KDM should we do some access checks here? Bump a reference count to 1190 * prevent a CTL module from being unloaded while someone has it open? 1191 */ 1192static int 1193ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1194{ 1195 return (0); 1196} 1197 1198static int 1199ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1200{ 1201 return (0); 1202} 1203 1204int 1205ctl_port_enable(ctl_port_type port_type) 1206{ 1207 struct ctl_softc *softc; 1208 struct ctl_frontend *fe; 1209 1210 if (ctl_is_single == 0) { 1211 union ctl_ha_msg msg_info; 1212 int isc_retval; 1213 1214#if 0 1215 printf("%s: HA mode, synchronizing frontend enable\n", 1216 __func__); 1217#endif 1218 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1219 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1220 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1221 printf("Sync msg send error retval %d\n", isc_retval); 1222 } 1223 if (!rcv_sync_msg) { 1224 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1225 sizeof(msg_info), 1); 1226 } 1227#if 0 1228 printf("CTL:Frontend Enable\n"); 1229 } else { 1230 printf("%s: single mode, skipping frontend synchronization\n", 1231 __func__); 1232#endif 1233 } 1234 1235 softc = control_softc; 1236 1237 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1238 if (port_type & fe->port_type) 1239 { 1240#if 0 1241 printf("port %d\n", fe->targ_port); 1242#endif 1243 ctl_frontend_online(fe); 1244 } 1245 } 1246 1247 return (0); 1248} 1249 1250int 1251ctl_port_disable(ctl_port_type port_type) 1252{ 1253 struct ctl_softc *softc; 1254 struct ctl_frontend *fe; 1255 1256 softc = control_softc; 1257 1258 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1259 if (port_type & fe->port_type) 1260 ctl_frontend_offline(fe); 1261 } 1262 1263 return (0); 1264} 1265 1266/* 1267 * Returns 0 for success, 1 for failure. 1268 * Currently the only failure mode is if there aren't enough entries 1269 * allocated. So, in case of a failure, look at num_entries_dropped, 1270 * reallocate and try again. 1271 */ 1272int 1273ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1274 int *num_entries_filled, int *num_entries_dropped, 1275 ctl_port_type port_type, int no_virtual) 1276{ 1277 struct ctl_softc *softc; 1278 struct ctl_frontend *fe; 1279 int entries_dropped, entries_filled; 1280 int retval; 1281 int i; 1282 1283 softc = control_softc; 1284 1285 retval = 0; 1286 entries_filled = 0; 1287 entries_dropped = 0; 1288 1289 i = 0; 1290 mtx_lock(&softc->ctl_lock); 1291 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1292 struct ctl_port_entry *entry; 1293 1294 if ((fe->port_type & port_type) == 0) 1295 continue; 1296 1297 if ((no_virtual != 0) 1298 && (fe->virtual_port != 0)) 1299 continue; 1300 1301 if (entries_filled >= num_entries_alloced) { 1302 entries_dropped++; 1303 continue; 1304 } 1305 entry = &entries[i]; 1306 1307 entry->port_type = fe->port_type; 1308 strlcpy(entry->port_name, fe->port_name, 1309 sizeof(entry->port_name)); 1310 entry->physical_port = fe->physical_port; 1311 entry->virtual_port = fe->virtual_port; 1312 entry->wwnn = fe->wwnn; 1313 entry->wwpn = fe->wwpn; 1314 1315 i++; 1316 entries_filled++; 1317 } 1318 1319 mtx_unlock(&softc->ctl_lock); 1320 1321 if (entries_dropped > 0) 1322 retval = 1; 1323 1324 *num_entries_dropped = entries_dropped; 1325 *num_entries_filled = entries_filled; 1326 1327 return (retval); 1328} 1329 1330static void 1331ctl_ioctl_online(void *arg) 1332{ 1333 struct ctl_ioctl_info *ioctl_info; 1334 1335 ioctl_info = (struct ctl_ioctl_info *)arg; 1336 1337 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1338} 1339 1340static void 1341ctl_ioctl_offline(void *arg) 1342{ 1343 struct ctl_ioctl_info *ioctl_info; 1344 1345 ioctl_info = (struct ctl_ioctl_info *)arg; 1346 1347 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1348} 1349 1350/* 1351 * Remove an initiator by port number and initiator ID. 1352 * Returns 0 for success, 1 for failure. 1353 */ 1354int 1355ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1356{ 1357 struct ctl_softc *softc; 1358 1359 softc = control_softc; 1360 1361 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1362 1363 if ((targ_port < 0) 1364 || (targ_port > CTL_MAX_PORTS)) { 1365 printf("%s: invalid port number %d\n", __func__, targ_port); 1366 return (1); 1367 } 1368 if (iid > CTL_MAX_INIT_PER_PORT) { 1369 printf("%s: initiator ID %u > maximun %u!\n", 1370 __func__, iid, CTL_MAX_INIT_PER_PORT); 1371 return (1); 1372 } 1373 1374 mtx_lock(&softc->ctl_lock); 1375 1376 softc->wwpn_iid[targ_port][iid].in_use = 0; 1377 1378 mtx_unlock(&softc->ctl_lock); 1379 1380 return (0); 1381} 1382 1383/* 1384 * Add an initiator to the initiator map. 1385 * Returns 0 for success, 1 for failure. 1386 */ 1387int 1388ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1389{ 1390 struct ctl_softc *softc; 1391 int retval; 1392 1393 softc = control_softc; 1394 1395 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1396 1397 retval = 0; 1398 1399 if ((targ_port < 0) 1400 || (targ_port > CTL_MAX_PORTS)) { 1401 printf("%s: invalid port number %d\n", __func__, targ_port); 1402 return (1); 1403 } 1404 if (iid > CTL_MAX_INIT_PER_PORT) { 1405 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1406 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1407 return (1); 1408 } 1409 1410 mtx_lock(&softc->ctl_lock); 1411 1412 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1413 /* 1414 * We don't treat this as an error. 1415 */ 1416 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1417 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1418 __func__, targ_port, iid, (uintmax_t)wwpn); 1419 goto bailout; 1420 } 1421 1422 /* 1423 * This is an error, but what do we do about it? The 1424 * driver is telling us we have a new WWPN for this 1425 * initiator ID, so we pretty much need to use it. 1426 */ 1427 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1428 "still at that address\n", __func__, targ_port, iid, 1429 (uintmax_t)wwpn, 1430 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1431 1432 /* 1433 * XXX KDM clear have_ca and ua_pending on each LUN for 1434 * this initiator. 1435 */ 1436 } 1437 softc->wwpn_iid[targ_port][iid].in_use = 1; 1438 softc->wwpn_iid[targ_port][iid].iid = iid; 1439 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1440 softc->wwpn_iid[targ_port][iid].port = targ_port; 1441 1442bailout: 1443 1444 mtx_unlock(&softc->ctl_lock); 1445 1446 return (retval); 1447} 1448 1449/* 1450 * XXX KDM should we pretend to do something in the target/lun 1451 * enable/disable functions? 1452 */ 1453static int 1454ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1455{ 1456 return (0); 1457} 1458 1459static int 1460ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1461{ 1462 return (0); 1463} 1464 1465static int 1466ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1467{ 1468 return (0); 1469} 1470 1471static int 1472ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1473{ 1474 return (0); 1475} 1476 1477/* 1478 * Data movement routine for the CTL ioctl frontend port. 1479 */ 1480static int 1481ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1482{ 1483 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1484 struct ctl_sg_entry ext_entry, kern_entry; 1485 int ext_sglen, ext_sg_entries, kern_sg_entries; 1486 int ext_sg_start, ext_offset; 1487 int len_to_copy, len_copied; 1488 int kern_watermark, ext_watermark; 1489 int ext_sglist_malloced; 1490 int i, j; 1491 1492 ext_sglist_malloced = 0; 1493 ext_sg_start = 0; 1494 ext_offset = 0; 1495 1496 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1497 1498 /* 1499 * If this flag is set, fake the data transfer. 1500 */ 1501 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1502 ctsio->ext_data_filled = ctsio->ext_data_len; 1503 goto bailout; 1504 } 1505 1506 /* 1507 * To simplify things here, if we have a single buffer, stick it in 1508 * a S/G entry and just make it a single entry S/G list. 1509 */ 1510 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1511 int len_seen; 1512 1513 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1514 1515 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1516 M_WAITOK); 1517 ext_sglist_malloced = 1; 1518 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1519 ext_sglen) != 0) { 1520 ctl_set_internal_failure(ctsio, 1521 /*sks_valid*/ 0, 1522 /*retry_count*/ 0); 1523 goto bailout; 1524 } 1525 ext_sg_entries = ctsio->ext_sg_entries; 1526 len_seen = 0; 1527 for (i = 0; i < ext_sg_entries; i++) { 1528 if ((len_seen + ext_sglist[i].len) >= 1529 ctsio->ext_data_filled) { 1530 ext_sg_start = i; 1531 ext_offset = ctsio->ext_data_filled - len_seen; 1532 break; 1533 } 1534 len_seen += ext_sglist[i].len; 1535 } 1536 } else { 1537 ext_sglist = &ext_entry; 1538 ext_sglist->addr = ctsio->ext_data_ptr; 1539 ext_sglist->len = ctsio->ext_data_len; 1540 ext_sg_entries = 1; 1541 ext_sg_start = 0; 1542 ext_offset = ctsio->ext_data_filled; 1543 } 1544 1545 if (ctsio->kern_sg_entries > 0) { 1546 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1547 kern_sg_entries = ctsio->kern_sg_entries; 1548 } else { 1549 kern_sglist = &kern_entry; 1550 kern_sglist->addr = ctsio->kern_data_ptr; 1551 kern_sglist->len = ctsio->kern_data_len; 1552 kern_sg_entries = 1; 1553 } 1554 1555 1556 kern_watermark = 0; 1557 ext_watermark = ext_offset; 1558 len_copied = 0; 1559 for (i = ext_sg_start, j = 0; 1560 i < ext_sg_entries && j < kern_sg_entries;) { 1561 uint8_t *ext_ptr, *kern_ptr; 1562 1563 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1564 kern_sglist[j].len - kern_watermark); 1565 1566 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1567 ext_ptr = ext_ptr + ext_watermark; 1568 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1569 /* 1570 * XXX KDM fix this! 1571 */ 1572 panic("need to implement bus address support"); 1573#if 0 1574 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1575#endif 1576 } else 1577 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1578 kern_ptr = kern_ptr + kern_watermark; 1579 1580 kern_watermark += len_to_copy; 1581 ext_watermark += len_to_copy; 1582 1583 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1584 CTL_FLAG_DATA_IN) { 1585 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1586 "bytes to user\n", len_to_copy)); 1587 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1588 "to %p\n", kern_ptr, ext_ptr)); 1589 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1590 ctl_set_internal_failure(ctsio, 1591 /*sks_valid*/ 0, 1592 /*retry_count*/ 0); 1593 goto bailout; 1594 } 1595 } else { 1596 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1597 "bytes from user\n", len_to_copy)); 1598 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1599 "to %p\n", ext_ptr, kern_ptr)); 1600 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1601 ctl_set_internal_failure(ctsio, 1602 /*sks_valid*/ 0, 1603 /*retry_count*/0); 1604 goto bailout; 1605 } 1606 } 1607 1608 len_copied += len_to_copy; 1609 1610 if (ext_sglist[i].len == ext_watermark) { 1611 i++; 1612 ext_watermark = 0; 1613 } 1614 1615 if (kern_sglist[j].len == kern_watermark) { 1616 j++; 1617 kern_watermark = 0; 1618 } 1619 } 1620 1621 ctsio->ext_data_filled += len_copied; 1622 1623 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1624 "kern_sg_entries: %d\n", ext_sg_entries, 1625 kern_sg_entries)); 1626 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1627 "kern_data_len = %d\n", ctsio->ext_data_len, 1628 ctsio->kern_data_len)); 1629 1630 1631 /* XXX KDM set residual?? */ 1632bailout: 1633 1634 if (ext_sglist_malloced != 0) 1635 free(ext_sglist, M_CTL); 1636 1637 return (CTL_RETVAL_COMPLETE); 1638} 1639 1640/* 1641 * Serialize a command that went down the "wrong" side, and so was sent to 1642 * this controller for execution. The logic is a little different than the 1643 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1644 * sent back to the other side, but in the success case, we execute the 1645 * command on this side (XFER mode) or tell the other side to execute it 1646 * (SER_ONLY mode). 1647 */ 1648static int 1649ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio) 1650{ 1651 struct ctl_softc *ctl_softc; 1652 union ctl_ha_msg msg_info; 1653 struct ctl_lun *lun; 1654 int retval = 0; 1655 uint32_t targ_lun; 1656 1657 ctl_softc = control_softc; 1658 1659 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 1660 lun = ctl_softc->ctl_luns[targ_lun]; 1661 if (lun==NULL) 1662 { 1663 /* 1664 * Why isn't LUN defined? The other side wouldn't 1665 * send a cmd if the LUN is undefined. 1666 */ 1667 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1668 1669 /* "Logical unit not supported" */ 1670 ctl_set_sense_data(&msg_info.scsi.sense_data, 1671 lun, 1672 /*sense_format*/SSD_TYPE_NONE, 1673 /*current_error*/ 1, 1674 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1675 /*asc*/ 0x25, 1676 /*ascq*/ 0x00, 1677 SSD_ELEM_NONE); 1678 1679 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1680 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1681 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1682 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1683 msg_info.hdr.serializing_sc = NULL; 1684 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1685 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1686 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1687 } 1688 return(1); 1689 1690 } 1691 1692 mtx_lock(&lun->lun_lock); 1693 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1694 1695 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1696 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1697 ooa_links))) { 1698 case CTL_ACTION_BLOCK: 1699 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1700 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1701 blocked_links); 1702 break; 1703 case CTL_ACTION_PASS: 1704 case CTL_ACTION_SKIP: 1705 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1706 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1707 ctl_enqueue_rtr((union ctl_io *)ctsio); 1708 } else { 1709 1710 /* send msg back to other side */ 1711 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1712 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1713 msg_info.hdr.msg_type = CTL_MSG_R2R; 1714#if 0 1715 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1716#endif 1717 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1718 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1719 } 1720 } 1721 break; 1722 case CTL_ACTION_OVERLAP: 1723 /* OVERLAPPED COMMANDS ATTEMPTED */ 1724 ctl_set_sense_data(&msg_info.scsi.sense_data, 1725 lun, 1726 /*sense_format*/SSD_TYPE_NONE, 1727 /*current_error*/ 1, 1728 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1729 /*asc*/ 0x4E, 1730 /*ascq*/ 0x00, 1731 SSD_ELEM_NONE); 1732 1733 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1734 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1735 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1736 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1737 msg_info.hdr.serializing_sc = NULL; 1738 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1739#if 0 1740 printf("BAD JUJU:Major Bummer Overlap\n"); 1741#endif 1742 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1743 retval = 1; 1744 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1745 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1746 } 1747 break; 1748 case CTL_ACTION_OVERLAP_TAG: 1749 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1750 ctl_set_sense_data(&msg_info.scsi.sense_data, 1751 lun, 1752 /*sense_format*/SSD_TYPE_NONE, 1753 /*current_error*/ 1, 1754 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1755 /*asc*/ 0x4D, 1756 /*ascq*/ ctsio->tag_num & 0xff, 1757 SSD_ELEM_NONE); 1758 1759 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1760 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1761 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1762 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1763 msg_info.hdr.serializing_sc = NULL; 1764 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1765#if 0 1766 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1767#endif 1768 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1769 retval = 1; 1770 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1771 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1772 } 1773 break; 1774 case CTL_ACTION_ERROR: 1775 default: 1776 /* "Internal target failure" */ 1777 ctl_set_sense_data(&msg_info.scsi.sense_data, 1778 lun, 1779 /*sense_format*/SSD_TYPE_NONE, 1780 /*current_error*/ 1, 1781 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1782 /*asc*/ 0x44, 1783 /*ascq*/ 0x00, 1784 SSD_ELEM_NONE); 1785 1786 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1787 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1788 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1789 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1790 msg_info.hdr.serializing_sc = NULL; 1791 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1792#if 0 1793 printf("BAD JUJU:Major Bummer HW Error\n"); 1794#endif 1795 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1796 retval = 1; 1797 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1798 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1799 } 1800 break; 1801 } 1802 mtx_unlock(&lun->lun_lock); 1803 return (retval); 1804} 1805 1806static int 1807ctl_ioctl_submit_wait(union ctl_io *io) 1808{ 1809 struct ctl_fe_ioctl_params params; 1810 ctl_fe_ioctl_state last_state; 1811 int done, retval; 1812 1813 retval = 0; 1814 1815 bzero(¶ms, sizeof(params)); 1816 1817 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1818 cv_init(¶ms.sem, "ctlioccv"); 1819 params.state = CTL_IOCTL_INPROG; 1820 last_state = params.state; 1821 1822 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1823 1824 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1825 1826 /* This shouldn't happen */ 1827 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1828 return (retval); 1829 1830 done = 0; 1831 1832 do { 1833 mtx_lock(¶ms.ioctl_mtx); 1834 /* 1835 * Check the state here, and don't sleep if the state has 1836 * already changed (i.e. wakeup has already occured, but we 1837 * weren't waiting yet). 1838 */ 1839 if (params.state == last_state) { 1840 /* XXX KDM cv_wait_sig instead? */ 1841 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1842 } 1843 last_state = params.state; 1844 1845 switch (params.state) { 1846 case CTL_IOCTL_INPROG: 1847 /* Why did we wake up? */ 1848 /* XXX KDM error here? */ 1849 mtx_unlock(¶ms.ioctl_mtx); 1850 break; 1851 case CTL_IOCTL_DATAMOVE: 1852 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1853 1854 /* 1855 * change last_state back to INPROG to avoid 1856 * deadlock on subsequent data moves. 1857 */ 1858 params.state = last_state = CTL_IOCTL_INPROG; 1859 1860 mtx_unlock(¶ms.ioctl_mtx); 1861 ctl_ioctl_do_datamove(&io->scsiio); 1862 /* 1863 * Note that in some cases, most notably writes, 1864 * this will queue the I/O and call us back later. 1865 * In other cases, generally reads, this routine 1866 * will immediately call back and wake us up, 1867 * probably using our own context. 1868 */ 1869 io->scsiio.be_move_done(io); 1870 break; 1871 case CTL_IOCTL_DONE: 1872 mtx_unlock(¶ms.ioctl_mtx); 1873 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1874 done = 1; 1875 break; 1876 default: 1877 mtx_unlock(¶ms.ioctl_mtx); 1878 /* XXX KDM error here? */ 1879 break; 1880 } 1881 } while (done == 0); 1882 1883 mtx_destroy(¶ms.ioctl_mtx); 1884 cv_destroy(¶ms.sem); 1885 1886 return (CTL_RETVAL_COMPLETE); 1887} 1888 1889static void 1890ctl_ioctl_datamove(union ctl_io *io) 1891{ 1892 struct ctl_fe_ioctl_params *params; 1893 1894 params = (struct ctl_fe_ioctl_params *) 1895 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1896 1897 mtx_lock(¶ms->ioctl_mtx); 1898 params->state = CTL_IOCTL_DATAMOVE; 1899 cv_broadcast(¶ms->sem); 1900 mtx_unlock(¶ms->ioctl_mtx); 1901} 1902 1903static void 1904ctl_ioctl_done(union ctl_io *io) 1905{ 1906 struct ctl_fe_ioctl_params *params; 1907 1908 params = (struct ctl_fe_ioctl_params *) 1909 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1910 1911 mtx_lock(¶ms->ioctl_mtx); 1912 params->state = CTL_IOCTL_DONE; 1913 cv_broadcast(¶ms->sem); 1914 mtx_unlock(¶ms->ioctl_mtx); 1915} 1916 1917static void 1918ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1919{ 1920 struct ctl_fe_ioctl_startstop_info *sd_info; 1921 1922 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1923 1924 sd_info->hs_info.status = metatask->status; 1925 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1926 sd_info->hs_info.luns_complete = 1927 metatask->taskinfo.startstop.luns_complete; 1928 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1929 1930 cv_broadcast(&sd_info->sem); 1931} 1932 1933static void 1934ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1935{ 1936 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1937 1938 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1939 1940 mtx_lock(fe_bbr_info->lock); 1941 fe_bbr_info->bbr_info->status = metatask->status; 1942 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1943 fe_bbr_info->wakeup_done = 1; 1944 mtx_unlock(fe_bbr_info->lock); 1945 1946 cv_broadcast(&fe_bbr_info->sem); 1947} 1948 1949/* 1950 * Returns 0 for success, errno for failure. 1951 */ 1952static int 1953ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1954 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1955{ 1956 union ctl_io *io; 1957 int retval; 1958 1959 retval = 0; 1960 1961 mtx_lock(&lun->lun_lock); 1962 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 1963 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 1964 ooa_links)) { 1965 struct ctl_ooa_entry *entry; 1966 1967 /* 1968 * If we've got more than we can fit, just count the 1969 * remaining entries. 1970 */ 1971 if (*cur_fill_num >= ooa_hdr->alloc_num) 1972 continue; 1973 1974 entry = &kern_entries[*cur_fill_num]; 1975 1976 entry->tag_num = io->scsiio.tag_num; 1977 entry->lun_num = lun->lun; 1978#ifdef CTL_TIME_IO 1979 entry->start_bt = io->io_hdr.start_bt; 1980#endif 1981 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 1982 entry->cdb_len = io->scsiio.cdb_len; 1983 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 1984 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 1985 1986 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 1987 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 1988 1989 if (io->io_hdr.flags & CTL_FLAG_ABORT) 1990 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 1991 1992 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 1993 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 1994 1995 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 1996 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 1997 } 1998 mtx_unlock(&lun->lun_lock); 1999 2000 return (retval); 2001} 2002 2003static void * 2004ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2005 size_t error_str_len) 2006{ 2007 void *kptr; 2008 2009 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2010 2011 if (copyin(user_addr, kptr, len) != 0) { 2012 snprintf(error_str, error_str_len, "Error copying %d bytes " 2013 "from user address %p to kernel address %p", len, 2014 user_addr, kptr); 2015 free(kptr, M_CTL); 2016 return (NULL); 2017 } 2018 2019 return (kptr); 2020} 2021 2022static void 2023ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2024{ 2025 int i; 2026 2027 if (be_args == NULL) 2028 return; 2029 2030 for (i = 0; i < num_be_args; i++) { 2031 free(be_args[i].kname, M_CTL); 2032 free(be_args[i].kvalue, M_CTL); 2033 } 2034 2035 free(be_args, M_CTL); 2036} 2037 2038static struct ctl_be_arg * 2039ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2040 char *error_str, size_t error_str_len) 2041{ 2042 struct ctl_be_arg *args; 2043 int i; 2044 2045 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2046 error_str, error_str_len); 2047 2048 if (args == NULL) 2049 goto bailout; 2050 2051 for (i = 0; i < num_be_args; i++) { 2052 args[i].kname = NULL; 2053 args[i].kvalue = NULL; 2054 } 2055 2056 for (i = 0; i < num_be_args; i++) { 2057 uint8_t *tmpptr; 2058 2059 args[i].kname = ctl_copyin_alloc(args[i].name, 2060 args[i].namelen, error_str, error_str_len); 2061 if (args[i].kname == NULL) 2062 goto bailout; 2063 2064 if (args[i].kname[args[i].namelen - 1] != '\0') { 2065 snprintf(error_str, error_str_len, "Argument %d " 2066 "name is not NUL-terminated", i); 2067 goto bailout; 2068 } 2069 2070 args[i].kvalue = NULL; 2071 2072 tmpptr = ctl_copyin_alloc(args[i].value, 2073 args[i].vallen, error_str, error_str_len); 2074 if (tmpptr == NULL) 2075 goto bailout; 2076 2077 args[i].kvalue = tmpptr; 2078 2079 if ((args[i].flags & CTL_BEARG_ASCII) 2080 && (tmpptr[args[i].vallen - 1] != '\0')) { 2081 snprintf(error_str, error_str_len, "Argument %d " 2082 "value is not NUL-terminated", i); 2083 goto bailout; 2084 } 2085 } 2086 2087 return (args); 2088bailout: 2089 2090 ctl_free_args(num_be_args, args); 2091 2092 return (NULL); 2093} 2094 2095/* 2096 * Escape characters that are illegal or not recommended in XML. 2097 */ 2098int 2099ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2100{ 2101 int retval; 2102 2103 retval = 0; 2104 2105 for (; *str; str++) { 2106 switch (*str) { 2107 case '&': 2108 retval = sbuf_printf(sb, "&"); 2109 break; 2110 case '>': 2111 retval = sbuf_printf(sb, ">"); 2112 break; 2113 case '<': 2114 retval = sbuf_printf(sb, "<"); 2115 break; 2116 default: 2117 retval = sbuf_putc(sb, *str); 2118 break; 2119 } 2120 2121 if (retval != 0) 2122 break; 2123 2124 } 2125 2126 return (retval); 2127} 2128 2129static int 2130ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2131 struct thread *td) 2132{ 2133 struct ctl_softc *softc; 2134 int retval; 2135 2136 softc = control_softc; 2137 2138 retval = 0; 2139 2140 switch (cmd) { 2141 case CTL_IO: { 2142 union ctl_io *io; 2143 void *pool_tmp; 2144 2145 /* 2146 * If we haven't been "enabled", don't allow any SCSI I/O 2147 * to this FETD. 2148 */ 2149 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2150 retval = -EPERM; 2151 break; 2152 } 2153 2154 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2155 if (io == NULL) { 2156 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2157 retval = -ENOSPC; 2158 break; 2159 } 2160 2161 /* 2162 * Need to save the pool reference so it doesn't get 2163 * spammed by the user's ctl_io. 2164 */ 2165 pool_tmp = io->io_hdr.pool; 2166 2167 memcpy(io, (void *)addr, sizeof(*io)); 2168 2169 io->io_hdr.pool = pool_tmp; 2170 /* 2171 * No status yet, so make sure the status is set properly. 2172 */ 2173 io->io_hdr.status = CTL_STATUS_NONE; 2174 2175 /* 2176 * The user sets the initiator ID, target and LUN IDs. 2177 */ 2178 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2179 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2180 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2181 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2182 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2183 2184 retval = ctl_ioctl_submit_wait(io); 2185 2186 if (retval != 0) { 2187 ctl_free_io(io); 2188 break; 2189 } 2190 2191 memcpy((void *)addr, io, sizeof(*io)); 2192 2193 /* return this to our pool */ 2194 ctl_free_io(io); 2195 2196 break; 2197 } 2198 case CTL_ENABLE_PORT: 2199 case CTL_DISABLE_PORT: 2200 case CTL_SET_PORT_WWNS: { 2201 struct ctl_frontend *fe; 2202 struct ctl_port_entry *entry; 2203 2204 entry = (struct ctl_port_entry *)addr; 2205 2206 mtx_lock(&softc->ctl_lock); 2207 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2208 int action, done; 2209 2210 action = 0; 2211 done = 0; 2212 2213 if ((entry->port_type == CTL_PORT_NONE) 2214 && (entry->targ_port == fe->targ_port)) { 2215 /* 2216 * If the user only wants to enable or 2217 * disable or set WWNs on a specific port, 2218 * do the operation and we're done. 2219 */ 2220 action = 1; 2221 done = 1; 2222 } else if (entry->port_type & fe->port_type) { 2223 /* 2224 * Compare the user's type mask with the 2225 * particular frontend type to see if we 2226 * have a match. 2227 */ 2228 action = 1; 2229 done = 0; 2230 2231 /* 2232 * Make sure the user isn't trying to set 2233 * WWNs on multiple ports at the same time. 2234 */ 2235 if (cmd == CTL_SET_PORT_WWNS) { 2236 printf("%s: Can't set WWNs on " 2237 "multiple ports\n", __func__); 2238 retval = EINVAL; 2239 break; 2240 } 2241 } 2242 if (action != 0) { 2243 /* 2244 * XXX KDM we have to drop the lock here, 2245 * because the online/offline operations 2246 * can potentially block. We need to 2247 * reference count the frontends so they 2248 * can't go away, 2249 */ 2250 mtx_unlock(&softc->ctl_lock); 2251 2252 if (cmd == CTL_ENABLE_PORT) { 2253 struct ctl_lun *lun; 2254 2255 STAILQ_FOREACH(lun, &softc->lun_list, 2256 links) { 2257 fe->lun_enable(fe->targ_lun_arg, 2258 lun->target, 2259 lun->lun); 2260 } 2261 2262 ctl_frontend_online(fe); 2263 } else if (cmd == CTL_DISABLE_PORT) { 2264 struct ctl_lun *lun; 2265 2266 ctl_frontend_offline(fe); 2267 2268 STAILQ_FOREACH(lun, &softc->lun_list, 2269 links) { 2270 fe->lun_disable( 2271 fe->targ_lun_arg, 2272 lun->target, 2273 lun->lun); 2274 } 2275 } 2276 2277 mtx_lock(&softc->ctl_lock); 2278 2279 if (cmd == CTL_SET_PORT_WWNS) 2280 ctl_frontend_set_wwns(fe, 2281 (entry->flags & CTL_PORT_WWNN_VALID) ? 2282 1 : 0, entry->wwnn, 2283 (entry->flags & CTL_PORT_WWPN_VALID) ? 2284 1 : 0, entry->wwpn); 2285 } 2286 if (done != 0) 2287 break; 2288 } 2289 mtx_unlock(&softc->ctl_lock); 2290 break; 2291 } 2292 case CTL_GET_PORT_LIST: { 2293 struct ctl_frontend *fe; 2294 struct ctl_port_list *list; 2295 int i; 2296 2297 list = (struct ctl_port_list *)addr; 2298 2299 if (list->alloc_len != (list->alloc_num * 2300 sizeof(struct ctl_port_entry))) { 2301 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2302 "alloc_num %u * sizeof(struct ctl_port_entry) " 2303 "%zu\n", __func__, list->alloc_len, 2304 list->alloc_num, sizeof(struct ctl_port_entry)); 2305 retval = EINVAL; 2306 break; 2307 } 2308 list->fill_len = 0; 2309 list->fill_num = 0; 2310 list->dropped_num = 0; 2311 i = 0; 2312 mtx_lock(&softc->ctl_lock); 2313 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2314 struct ctl_port_entry entry, *list_entry; 2315 2316 if (list->fill_num >= list->alloc_num) { 2317 list->dropped_num++; 2318 continue; 2319 } 2320 2321 entry.port_type = fe->port_type; 2322 strlcpy(entry.port_name, fe->port_name, 2323 sizeof(entry.port_name)); 2324 entry.targ_port = fe->targ_port; 2325 entry.physical_port = fe->physical_port; 2326 entry.virtual_port = fe->virtual_port; 2327 entry.wwnn = fe->wwnn; 2328 entry.wwpn = fe->wwpn; 2329 if (fe->status & CTL_PORT_STATUS_ONLINE) 2330 entry.online = 1; 2331 else 2332 entry.online = 0; 2333 2334 list_entry = &list->entries[i]; 2335 2336 retval = copyout(&entry, list_entry, sizeof(entry)); 2337 if (retval != 0) { 2338 printf("%s: CTL_GET_PORT_LIST: copyout " 2339 "returned %d\n", __func__, retval); 2340 break; 2341 } 2342 i++; 2343 list->fill_num++; 2344 list->fill_len += sizeof(entry); 2345 } 2346 mtx_unlock(&softc->ctl_lock); 2347 2348 /* 2349 * If this is non-zero, we had a copyout fault, so there's 2350 * probably no point in attempting to set the status inside 2351 * the structure. 2352 */ 2353 if (retval != 0) 2354 break; 2355 2356 if (list->dropped_num > 0) 2357 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2358 else 2359 list->status = CTL_PORT_LIST_OK; 2360 break; 2361 } 2362 case CTL_DUMP_OOA: { 2363 struct ctl_lun *lun; 2364 union ctl_io *io; 2365 char printbuf[128]; 2366 struct sbuf sb; 2367 2368 mtx_lock(&softc->ctl_lock); 2369 printf("Dumping OOA queues:\n"); 2370 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2371 mtx_lock(&lun->lun_lock); 2372 for (io = (union ctl_io *)TAILQ_FIRST( 2373 &lun->ooa_queue); io != NULL; 2374 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2375 ooa_links)) { 2376 sbuf_new(&sb, printbuf, sizeof(printbuf), 2377 SBUF_FIXEDLEN); 2378 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2379 (intmax_t)lun->lun, 2380 io->scsiio.tag_num, 2381 (io->io_hdr.flags & 2382 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2383 (io->io_hdr.flags & 2384 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2385 (io->io_hdr.flags & 2386 CTL_FLAG_ABORT) ? " ABORT" : "", 2387 (io->io_hdr.flags & 2388 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2389 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2390 sbuf_finish(&sb); 2391 printf("%s\n", sbuf_data(&sb)); 2392 } 2393 mtx_unlock(&lun->lun_lock); 2394 } 2395 printf("OOA queues dump done\n"); 2396 mtx_unlock(&softc->ctl_lock); 2397 break; 2398 } 2399 case CTL_GET_OOA: { 2400 struct ctl_lun *lun; 2401 struct ctl_ooa *ooa_hdr; 2402 struct ctl_ooa_entry *entries; 2403 uint32_t cur_fill_num; 2404 2405 ooa_hdr = (struct ctl_ooa *)addr; 2406 2407 if ((ooa_hdr->alloc_len == 0) 2408 || (ooa_hdr->alloc_num == 0)) { 2409 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2410 "must be non-zero\n", __func__, 2411 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2412 retval = EINVAL; 2413 break; 2414 } 2415 2416 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2417 sizeof(struct ctl_ooa_entry))) { 2418 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2419 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2420 __func__, ooa_hdr->alloc_len, 2421 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2422 retval = EINVAL; 2423 break; 2424 } 2425 2426 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2427 if (entries == NULL) { 2428 printf("%s: could not allocate %d bytes for OOA " 2429 "dump\n", __func__, ooa_hdr->alloc_len); 2430 retval = ENOMEM; 2431 break; 2432 } 2433 2434 mtx_lock(&softc->ctl_lock); 2435 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2436 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2437 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2438 mtx_unlock(&softc->ctl_lock); 2439 free(entries, M_CTL); 2440 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2441 __func__, (uintmax_t)ooa_hdr->lun_num); 2442 retval = EINVAL; 2443 break; 2444 } 2445 2446 cur_fill_num = 0; 2447 2448 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2449 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2450 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2451 ooa_hdr, entries); 2452 if (retval != 0) 2453 break; 2454 } 2455 if (retval != 0) { 2456 mtx_unlock(&softc->ctl_lock); 2457 free(entries, M_CTL); 2458 break; 2459 } 2460 } else { 2461 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2462 2463 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2464 entries); 2465 } 2466 mtx_unlock(&softc->ctl_lock); 2467 2468 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2469 ooa_hdr->fill_len = ooa_hdr->fill_num * 2470 sizeof(struct ctl_ooa_entry); 2471 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2472 if (retval != 0) { 2473 printf("%s: error copying out %d bytes for OOA dump\n", 2474 __func__, ooa_hdr->fill_len); 2475 } 2476 2477 getbintime(&ooa_hdr->cur_bt); 2478 2479 if (cur_fill_num > ooa_hdr->alloc_num) { 2480 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2481 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2482 } else { 2483 ooa_hdr->dropped_num = 0; 2484 ooa_hdr->status = CTL_OOA_OK; 2485 } 2486 2487 free(entries, M_CTL); 2488 break; 2489 } 2490 case CTL_CHECK_OOA: { 2491 union ctl_io *io; 2492 struct ctl_lun *lun; 2493 struct ctl_ooa_info *ooa_info; 2494 2495 2496 ooa_info = (struct ctl_ooa_info *)addr; 2497 2498 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2499 ooa_info->status = CTL_OOA_INVALID_LUN; 2500 break; 2501 } 2502 mtx_lock(&softc->ctl_lock); 2503 lun = softc->ctl_luns[ooa_info->lun_id]; 2504 if (lun == NULL) { 2505 mtx_unlock(&softc->ctl_lock); 2506 ooa_info->status = CTL_OOA_INVALID_LUN; 2507 break; 2508 } 2509 mtx_lock(&lun->lun_lock); 2510 mtx_unlock(&softc->ctl_lock); 2511 ooa_info->num_entries = 0; 2512 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2513 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2514 &io->io_hdr, ooa_links)) { 2515 ooa_info->num_entries++; 2516 } 2517 mtx_unlock(&lun->lun_lock); 2518 2519 ooa_info->status = CTL_OOA_SUCCESS; 2520 2521 break; 2522 } 2523 case CTL_HARD_START: 2524 case CTL_HARD_STOP: { 2525 struct ctl_fe_ioctl_startstop_info ss_info; 2526 struct cfi_metatask *metatask; 2527 struct mtx hs_mtx; 2528 2529 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2530 2531 cv_init(&ss_info.sem, "hard start/stop cv" ); 2532 2533 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2534 if (metatask == NULL) { 2535 retval = ENOMEM; 2536 mtx_destroy(&hs_mtx); 2537 break; 2538 } 2539 2540 if (cmd == CTL_HARD_START) 2541 metatask->tasktype = CFI_TASK_STARTUP; 2542 else 2543 metatask->tasktype = CFI_TASK_SHUTDOWN; 2544 2545 metatask->callback = ctl_ioctl_hard_startstop_callback; 2546 metatask->callback_arg = &ss_info; 2547 2548 cfi_action(metatask); 2549 2550 /* Wait for the callback */ 2551 mtx_lock(&hs_mtx); 2552 cv_wait_sig(&ss_info.sem, &hs_mtx); 2553 mtx_unlock(&hs_mtx); 2554 2555 /* 2556 * All information has been copied from the metatask by the 2557 * time cv_broadcast() is called, so we free the metatask here. 2558 */ 2559 cfi_free_metatask(metatask); 2560 2561 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2562 2563 mtx_destroy(&hs_mtx); 2564 break; 2565 } 2566 case CTL_BBRREAD: { 2567 struct ctl_bbrread_info *bbr_info; 2568 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2569 struct mtx bbr_mtx; 2570 struct cfi_metatask *metatask; 2571 2572 bbr_info = (struct ctl_bbrread_info *)addr; 2573 2574 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2575 2576 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2577 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2578 2579 fe_bbr_info.bbr_info = bbr_info; 2580 fe_bbr_info.lock = &bbr_mtx; 2581 2582 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2583 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2584 2585 if (metatask == NULL) { 2586 mtx_destroy(&bbr_mtx); 2587 cv_destroy(&fe_bbr_info.sem); 2588 retval = ENOMEM; 2589 break; 2590 } 2591 metatask->tasktype = CFI_TASK_BBRREAD; 2592 metatask->callback = ctl_ioctl_bbrread_callback; 2593 metatask->callback_arg = &fe_bbr_info; 2594 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2595 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2596 metatask->taskinfo.bbrread.len = bbr_info->len; 2597 2598 cfi_action(metatask); 2599 2600 mtx_lock(&bbr_mtx); 2601 while (fe_bbr_info.wakeup_done == 0) 2602 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2603 mtx_unlock(&bbr_mtx); 2604 2605 bbr_info->status = metatask->status; 2606 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2607 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2608 memcpy(&bbr_info->sense_data, 2609 &metatask->taskinfo.bbrread.sense_data, 2610 ctl_min(sizeof(bbr_info->sense_data), 2611 sizeof(metatask->taskinfo.bbrread.sense_data))); 2612 2613 cfi_free_metatask(metatask); 2614 2615 mtx_destroy(&bbr_mtx); 2616 cv_destroy(&fe_bbr_info.sem); 2617 2618 break; 2619 } 2620 case CTL_DELAY_IO: { 2621 struct ctl_io_delay_info *delay_info; 2622#ifdef CTL_IO_DELAY 2623 struct ctl_lun *lun; 2624#endif /* CTL_IO_DELAY */ 2625 2626 delay_info = (struct ctl_io_delay_info *)addr; 2627 2628#ifdef CTL_IO_DELAY 2629 mtx_lock(&softc->ctl_lock); 2630 2631 if ((delay_info->lun_id > CTL_MAX_LUNS) 2632 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2633 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2634 } else { 2635 lun = softc->ctl_luns[delay_info->lun_id]; 2636 mtx_lock(&lun->lun_lock); 2637 2638 delay_info->status = CTL_DELAY_STATUS_OK; 2639 2640 switch (delay_info->delay_type) { 2641 case CTL_DELAY_TYPE_CONT: 2642 break; 2643 case CTL_DELAY_TYPE_ONESHOT: 2644 break; 2645 default: 2646 delay_info->status = 2647 CTL_DELAY_STATUS_INVALID_TYPE; 2648 break; 2649 } 2650 2651 switch (delay_info->delay_loc) { 2652 case CTL_DELAY_LOC_DATAMOVE: 2653 lun->delay_info.datamove_type = 2654 delay_info->delay_type; 2655 lun->delay_info.datamove_delay = 2656 delay_info->delay_secs; 2657 break; 2658 case CTL_DELAY_LOC_DONE: 2659 lun->delay_info.done_type = 2660 delay_info->delay_type; 2661 lun->delay_info.done_delay = 2662 delay_info->delay_secs; 2663 break; 2664 default: 2665 delay_info->status = 2666 CTL_DELAY_STATUS_INVALID_LOC; 2667 break; 2668 } 2669 mtx_unlock(&lun->lun_lock); 2670 } 2671 2672 mtx_unlock(&softc->ctl_lock); 2673#else 2674 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2675#endif /* CTL_IO_DELAY */ 2676 break; 2677 } 2678 case CTL_REALSYNC_SET: { 2679 int *syncstate; 2680 2681 syncstate = (int *)addr; 2682 2683 mtx_lock(&softc->ctl_lock); 2684 switch (*syncstate) { 2685 case 0: 2686 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2687 break; 2688 case 1: 2689 softc->flags |= CTL_FLAG_REAL_SYNC; 2690 break; 2691 default: 2692 retval = -EINVAL; 2693 break; 2694 } 2695 mtx_unlock(&softc->ctl_lock); 2696 break; 2697 } 2698 case CTL_REALSYNC_GET: { 2699 int *syncstate; 2700 2701 syncstate = (int*)addr; 2702 2703 mtx_lock(&softc->ctl_lock); 2704 if (softc->flags & CTL_FLAG_REAL_SYNC) 2705 *syncstate = 1; 2706 else 2707 *syncstate = 0; 2708 mtx_unlock(&softc->ctl_lock); 2709 2710 break; 2711 } 2712 case CTL_SETSYNC: 2713 case CTL_GETSYNC: { 2714 struct ctl_sync_info *sync_info; 2715 struct ctl_lun *lun; 2716 2717 sync_info = (struct ctl_sync_info *)addr; 2718 2719 mtx_lock(&softc->ctl_lock); 2720 lun = softc->ctl_luns[sync_info->lun_id]; 2721 if (lun == NULL) { 2722 mtx_unlock(&softc->ctl_lock); 2723 sync_info->status = CTL_GS_SYNC_NO_LUN; 2724 } 2725 /* 2726 * Get or set the sync interval. We're not bounds checking 2727 * in the set case, hopefully the user won't do something 2728 * silly. 2729 */ 2730 mtx_lock(&lun->lun_lock); 2731 mtx_unlock(&softc->ctl_lock); 2732 if (cmd == CTL_GETSYNC) 2733 sync_info->sync_interval = lun->sync_interval; 2734 else 2735 lun->sync_interval = sync_info->sync_interval; 2736 mtx_unlock(&lun->lun_lock); 2737 2738 sync_info->status = CTL_GS_SYNC_OK; 2739 2740 break; 2741 } 2742 case CTL_GETSTATS: { 2743 struct ctl_stats *stats; 2744 struct ctl_lun *lun; 2745 int i; 2746 2747 stats = (struct ctl_stats *)addr; 2748 2749 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2750 stats->alloc_len) { 2751 stats->status = CTL_SS_NEED_MORE_SPACE; 2752 stats->num_luns = softc->num_luns; 2753 break; 2754 } 2755 /* 2756 * XXX KDM no locking here. If the LUN list changes, 2757 * things can blow up. 2758 */ 2759 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2760 i++, lun = STAILQ_NEXT(lun, links)) { 2761 retval = copyout(&lun->stats, &stats->lun_stats[i], 2762 sizeof(lun->stats)); 2763 if (retval != 0) 2764 break; 2765 } 2766 stats->num_luns = softc->num_luns; 2767 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2768 softc->num_luns; 2769 stats->status = CTL_SS_OK; 2770#ifdef CTL_TIME_IO 2771 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2772#else 2773 stats->flags = CTL_STATS_FLAG_NONE; 2774#endif 2775 getnanouptime(&stats->timestamp); 2776 break; 2777 } 2778 case CTL_ERROR_INJECT: { 2779 struct ctl_error_desc *err_desc, *new_err_desc; 2780 struct ctl_lun *lun; 2781 2782 err_desc = (struct ctl_error_desc *)addr; 2783 2784 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2785 M_WAITOK | M_ZERO); 2786 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2787 2788 mtx_lock(&softc->ctl_lock); 2789 lun = softc->ctl_luns[err_desc->lun_id]; 2790 if (lun == NULL) { 2791 mtx_unlock(&softc->ctl_lock); 2792 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2793 __func__, (uintmax_t)err_desc->lun_id); 2794 retval = EINVAL; 2795 break; 2796 } 2797 mtx_lock(&lun->lun_lock); 2798 mtx_unlock(&softc->ctl_lock); 2799 2800 /* 2801 * We could do some checking here to verify the validity 2802 * of the request, but given the complexity of error 2803 * injection requests, the checking logic would be fairly 2804 * complex. 2805 * 2806 * For now, if the request is invalid, it just won't get 2807 * executed and might get deleted. 2808 */ 2809 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2810 2811 /* 2812 * XXX KDM check to make sure the serial number is unique, 2813 * in case we somehow manage to wrap. That shouldn't 2814 * happen for a very long time, but it's the right thing to 2815 * do. 2816 */ 2817 new_err_desc->serial = lun->error_serial; 2818 err_desc->serial = lun->error_serial; 2819 lun->error_serial++; 2820 2821 mtx_unlock(&lun->lun_lock); 2822 break; 2823 } 2824 case CTL_ERROR_INJECT_DELETE: { 2825 struct ctl_error_desc *delete_desc, *desc, *desc2; 2826 struct ctl_lun *lun; 2827 int delete_done; 2828 2829 delete_desc = (struct ctl_error_desc *)addr; 2830 delete_done = 0; 2831 2832 mtx_lock(&softc->ctl_lock); 2833 lun = softc->ctl_luns[delete_desc->lun_id]; 2834 if (lun == NULL) { 2835 mtx_unlock(&softc->ctl_lock); 2836 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2837 __func__, (uintmax_t)delete_desc->lun_id); 2838 retval = EINVAL; 2839 break; 2840 } 2841 mtx_lock(&lun->lun_lock); 2842 mtx_unlock(&softc->ctl_lock); 2843 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2844 if (desc->serial != delete_desc->serial) 2845 continue; 2846 2847 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2848 links); 2849 free(desc, M_CTL); 2850 delete_done = 1; 2851 } 2852 mtx_unlock(&lun->lun_lock); 2853 if (delete_done == 0) { 2854 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2855 "error serial %ju on LUN %u\n", __func__, 2856 delete_desc->serial, delete_desc->lun_id); 2857 retval = EINVAL; 2858 break; 2859 } 2860 break; 2861 } 2862 case CTL_DUMP_STRUCTS: { 2863 int i, j, k; 2864 struct ctl_frontend *fe; 2865 2866 printf("CTL IID to WWPN map start:\n"); 2867 for (i = 0; i < CTL_MAX_PORTS; i++) { 2868 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2869 if (softc->wwpn_iid[i][j].in_use == 0) 2870 continue; 2871 2872 printf("port %d iid %u WWPN %#jx\n", 2873 softc->wwpn_iid[i][j].port, 2874 softc->wwpn_iid[i][j].iid, 2875 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2876 } 2877 } 2878 printf("CTL IID to WWPN map end\n"); 2879 printf("CTL Persistent Reservation information start:\n"); 2880 for (i = 0; i < CTL_MAX_LUNS; i++) { 2881 struct ctl_lun *lun; 2882 2883 lun = softc->ctl_luns[i]; 2884 2885 if ((lun == NULL) 2886 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2887 continue; 2888 2889 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2890 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2891 if (lun->per_res[j+k].registered == 0) 2892 continue; 2893 printf("LUN %d port %d iid %d key " 2894 "%#jx\n", i, j, k, 2895 (uintmax_t)scsi_8btou64( 2896 lun->per_res[j+k].res_key.key)); 2897 } 2898 } 2899 } 2900 printf("CTL Persistent Reservation information end\n"); 2901 printf("CTL Frontends:\n"); 2902 /* 2903 * XXX KDM calling this without a lock. We'd likely want 2904 * to drop the lock before calling the frontend's dump 2905 * routine anyway. 2906 */ 2907 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2908 printf("Frontend %s Type %u pport %d vport %d WWNN " 2909 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2910 fe->physical_port, fe->virtual_port, 2911 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2912 2913 /* 2914 * Frontends are not required to support the dump 2915 * routine. 2916 */ 2917 if (fe->fe_dump == NULL) 2918 continue; 2919 2920 fe->fe_dump(); 2921 } 2922 printf("CTL Frontend information end\n"); 2923 break; 2924 } 2925 case CTL_LUN_REQ: { 2926 struct ctl_lun_req *lun_req; 2927 struct ctl_backend_driver *backend; 2928 2929 lun_req = (struct ctl_lun_req *)addr; 2930 2931 backend = ctl_backend_find(lun_req->backend); 2932 if (backend == NULL) { 2933 lun_req->status = CTL_LUN_ERROR; 2934 snprintf(lun_req->error_str, 2935 sizeof(lun_req->error_str), 2936 "Backend \"%s\" not found.", 2937 lun_req->backend); 2938 break; 2939 } 2940 if (lun_req->num_be_args > 0) { 2941 lun_req->kern_be_args = ctl_copyin_args( 2942 lun_req->num_be_args, 2943 lun_req->be_args, 2944 lun_req->error_str, 2945 sizeof(lun_req->error_str)); 2946 if (lun_req->kern_be_args == NULL) { 2947 lun_req->status = CTL_LUN_ERROR; 2948 break; 2949 } 2950 } 2951 2952 retval = backend->ioctl(dev, cmd, addr, flag, td); 2953 2954 if (lun_req->num_be_args > 0) { 2955 ctl_free_args(lun_req->num_be_args, 2956 lun_req->kern_be_args); 2957 } 2958 break; 2959 } 2960 case CTL_LUN_LIST: { 2961 struct sbuf *sb; 2962 struct ctl_lun *lun; 2963 struct ctl_lun_list *list; 2964 struct ctl_be_lun_option *opt; 2965 2966 list = (struct ctl_lun_list *)addr; 2967 2968 /* 2969 * Allocate a fixed length sbuf here, based on the length 2970 * of the user's buffer. We could allocate an auto-extending 2971 * buffer, and then tell the user how much larger our 2972 * amount of data is than his buffer, but that presents 2973 * some problems: 2974 * 2975 * 1. The sbuf(9) routines use a blocking malloc, and so 2976 * we can't hold a lock while calling them with an 2977 * auto-extending buffer. 2978 * 2979 * 2. There is not currently a LUN reference counting 2980 * mechanism, outside of outstanding transactions on 2981 * the LUN's OOA queue. So a LUN could go away on us 2982 * while we're getting the LUN number, backend-specific 2983 * information, etc. Thus, given the way things 2984 * currently work, we need to hold the CTL lock while 2985 * grabbing LUN information. 2986 * 2987 * So, from the user's standpoint, the best thing to do is 2988 * allocate what he thinks is a reasonable buffer length, 2989 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 2990 * double the buffer length and try again. (And repeat 2991 * that until he succeeds.) 2992 */ 2993 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 2994 if (sb == NULL) { 2995 list->status = CTL_LUN_LIST_ERROR; 2996 snprintf(list->error_str, sizeof(list->error_str), 2997 "Unable to allocate %d bytes for LUN list", 2998 list->alloc_len); 2999 break; 3000 } 3001 3002 sbuf_printf(sb, "<ctllunlist>\n"); 3003 3004 mtx_lock(&softc->ctl_lock); 3005 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3006 mtx_lock(&lun->lun_lock); 3007 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3008 (uintmax_t)lun->lun); 3009 3010 /* 3011 * Bail out as soon as we see that we've overfilled 3012 * the buffer. 3013 */ 3014 if (retval != 0) 3015 break; 3016 3017 retval = sbuf_printf(sb, "<backend_type>%s" 3018 "</backend_type>\n", 3019 (lun->backend == NULL) ? "none" : 3020 lun->backend->name); 3021 3022 if (retval != 0) 3023 break; 3024 3025 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 3026 lun->be_lun->lun_type); 3027 3028 if (retval != 0) 3029 break; 3030 3031 if (lun->backend == NULL) { 3032 retval = sbuf_printf(sb, "</lun>\n"); 3033 if (retval != 0) 3034 break; 3035 continue; 3036 } 3037 3038 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3039 (lun->be_lun->maxlba > 0) ? 3040 lun->be_lun->maxlba + 1 : 0); 3041 3042 if (retval != 0) 3043 break; 3044 3045 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3046 lun->be_lun->blocksize); 3047 3048 if (retval != 0) 3049 break; 3050 3051 retval = sbuf_printf(sb, "<serial_number>"); 3052 3053 if (retval != 0) 3054 break; 3055 3056 retval = ctl_sbuf_printf_esc(sb, 3057 lun->be_lun->serial_num); 3058 3059 if (retval != 0) 3060 break; 3061 3062 retval = sbuf_printf(sb, "</serial_number>\n"); 3063 3064 if (retval != 0) 3065 break; 3066 3067 retval = sbuf_printf(sb, "<device_id>"); 3068 3069 if (retval != 0) 3070 break; 3071 3072 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3073 3074 if (retval != 0) 3075 break; 3076 3077 retval = sbuf_printf(sb, "</device_id>\n"); 3078 3079 if (retval != 0) 3080 break; 3081 3082 if (lun->backend->lun_info != NULL) { 3083 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3084 if (retval != 0) 3085 break; 3086 } 3087 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3088 retval = sbuf_printf(sb, "<%s>%s</%s>", opt->name, opt->value, opt->name); 3089 if (retval != 0) 3090 break; 3091 } 3092 3093 retval = sbuf_printf(sb, "</lun>\n"); 3094 3095 if (retval != 0) 3096 break; 3097 mtx_unlock(&lun->lun_lock); 3098 } 3099 if (lun != NULL) 3100 mtx_unlock(&lun->lun_lock); 3101 mtx_unlock(&softc->ctl_lock); 3102 3103 if ((retval != 0) 3104 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3105 retval = 0; 3106 sbuf_delete(sb); 3107 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3108 snprintf(list->error_str, sizeof(list->error_str), 3109 "Out of space, %d bytes is too small", 3110 list->alloc_len); 3111 break; 3112 } 3113 3114 sbuf_finish(sb); 3115 3116 retval = copyout(sbuf_data(sb), list->lun_xml, 3117 sbuf_len(sb) + 1); 3118 3119 list->fill_len = sbuf_len(sb) + 1; 3120 list->status = CTL_LUN_LIST_OK; 3121 sbuf_delete(sb); 3122 break; 3123 } 3124 case CTL_ISCSI: { 3125 struct ctl_iscsi *ci; 3126 struct ctl_frontend *fe; 3127 3128 ci = (struct ctl_iscsi *)addr; 3129 3130 mtx_lock(&softc->ctl_lock); 3131 STAILQ_FOREACH(fe, &softc->fe_list, links) { 3132 if (strcmp(fe->port_name, "iscsi") == 0) 3133 break; 3134 } 3135 mtx_unlock(&softc->ctl_lock); 3136 3137 if (fe == NULL) { 3138 ci->status = CTL_ISCSI_ERROR; 3139 snprintf(ci->error_str, sizeof(ci->error_str), "Backend \"iscsi\" not found."); 3140 break; 3141 } 3142 3143 retval = fe->ioctl(dev, cmd, addr, flag, td); 3144 break; 3145 } 3146 default: { 3147 /* XXX KDM should we fix this? */ 3148#if 0 3149 struct ctl_backend_driver *backend; 3150 unsigned int type; 3151 int found; 3152 3153 found = 0; 3154 3155 /* 3156 * We encode the backend type as the ioctl type for backend 3157 * ioctls. So parse it out here, and then search for a 3158 * backend of this type. 3159 */ 3160 type = _IOC_TYPE(cmd); 3161 3162 STAILQ_FOREACH(backend, &softc->be_list, links) { 3163 if (backend->type == type) { 3164 found = 1; 3165 break; 3166 } 3167 } 3168 if (found == 0) { 3169 printf("ctl: unknown ioctl command %#lx or backend " 3170 "%d\n", cmd, type); 3171 retval = -EINVAL; 3172 break; 3173 } 3174 retval = backend->ioctl(dev, cmd, addr, flag, td); 3175#endif 3176 retval = ENOTTY; 3177 break; 3178 } 3179 } 3180 return (retval); 3181} 3182 3183uint32_t 3184ctl_get_initindex(struct ctl_nexus *nexus) 3185{ 3186 if (nexus->targ_port < CTL_MAX_PORTS) 3187 return (nexus->initid.id + 3188 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3189 else 3190 return (nexus->initid.id + 3191 ((nexus->targ_port - CTL_MAX_PORTS) * 3192 CTL_MAX_INIT_PER_PORT)); 3193} 3194 3195uint32_t 3196ctl_get_resindex(struct ctl_nexus *nexus) 3197{ 3198 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3199} 3200 3201uint32_t 3202ctl_port_idx(int port_num) 3203{ 3204 if (port_num < CTL_MAX_PORTS) 3205 return(port_num); 3206 else 3207 return(port_num - CTL_MAX_PORTS); 3208} 3209 3210/* 3211 * Note: This only works for bitmask sizes that are at least 32 bits, and 3212 * that are a power of 2. 3213 */ 3214int 3215ctl_ffz(uint32_t *mask, uint32_t size) 3216{ 3217 uint32_t num_chunks, num_pieces; 3218 int i, j; 3219 3220 num_chunks = (size >> 5); 3221 if (num_chunks == 0) 3222 num_chunks++; 3223 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3224 3225 for (i = 0; i < num_chunks; i++) { 3226 for (j = 0; j < num_pieces; j++) { 3227 if ((mask[i] & (1 << j)) == 0) 3228 return ((i << 5) + j); 3229 } 3230 } 3231 3232 return (-1); 3233} 3234 3235int 3236ctl_set_mask(uint32_t *mask, uint32_t bit) 3237{ 3238 uint32_t chunk, piece; 3239 3240 chunk = bit >> 5; 3241 piece = bit % (sizeof(uint32_t) * 8); 3242 3243 if ((mask[chunk] & (1 << piece)) != 0) 3244 return (-1); 3245 else 3246 mask[chunk] |= (1 << piece); 3247 3248 return (0); 3249} 3250 3251int 3252ctl_clear_mask(uint32_t *mask, uint32_t bit) 3253{ 3254 uint32_t chunk, piece; 3255 3256 chunk = bit >> 5; 3257 piece = bit % (sizeof(uint32_t) * 8); 3258 3259 if ((mask[chunk] & (1 << piece)) == 0) 3260 return (-1); 3261 else 3262 mask[chunk] &= ~(1 << piece); 3263 3264 return (0); 3265} 3266 3267int 3268ctl_is_set(uint32_t *mask, uint32_t bit) 3269{ 3270 uint32_t chunk, piece; 3271 3272 chunk = bit >> 5; 3273 piece = bit % (sizeof(uint32_t) * 8); 3274 3275 if ((mask[chunk] & (1 << piece)) == 0) 3276 return (0); 3277 else 3278 return (1); 3279} 3280 3281#ifdef unused 3282/* 3283 * The bus, target and lun are optional, they can be filled in later. 3284 * can_wait is used to determine whether we can wait on the malloc or not. 3285 */ 3286union ctl_io* 3287ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3288 uint32_t targ_lun, int can_wait) 3289{ 3290 union ctl_io *io; 3291 3292 if (can_wait) 3293 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3294 else 3295 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3296 3297 if (io != NULL) { 3298 io->io_hdr.io_type = io_type; 3299 io->io_hdr.targ_port = targ_port; 3300 /* 3301 * XXX KDM this needs to change/go away. We need to move 3302 * to a preallocated pool of ctl_scsiio structures. 3303 */ 3304 io->io_hdr.nexus.targ_target.id = targ_target; 3305 io->io_hdr.nexus.targ_lun = targ_lun; 3306 } 3307 3308 return (io); 3309} 3310 3311void 3312ctl_kfree_io(union ctl_io *io) 3313{ 3314 free(io, M_CTL); 3315} 3316#endif /* unused */ 3317 3318/* 3319 * ctl_softc, pool_type, total_ctl_io are passed in. 3320 * npool is passed out. 3321 */ 3322int 3323ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3324 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3325{ 3326 uint32_t i; 3327 union ctl_io *cur_io, *next_io; 3328 struct ctl_io_pool *pool; 3329 int retval; 3330 3331 retval = 0; 3332 3333 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3334 M_NOWAIT | M_ZERO); 3335 if (pool == NULL) { 3336 retval = -ENOMEM; 3337 goto bailout; 3338 } 3339 3340 pool->type = pool_type; 3341 pool->ctl_softc = ctl_softc; 3342 3343 mtx_lock(&ctl_softc->pool_lock); 3344 pool->id = ctl_softc->cur_pool_id++; 3345 mtx_unlock(&ctl_softc->pool_lock); 3346 3347 pool->flags = CTL_POOL_FLAG_NONE; 3348 pool->refcount = 1; /* Reference for validity. */ 3349 STAILQ_INIT(&pool->free_queue); 3350 3351 /* 3352 * XXX KDM other options here: 3353 * - allocate a page at a time 3354 * - allocate one big chunk of memory. 3355 * Page allocation might work well, but would take a little more 3356 * tracking. 3357 */ 3358 for (i = 0; i < total_ctl_io; i++) { 3359 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3360 M_NOWAIT); 3361 if (cur_io == NULL) { 3362 retval = ENOMEM; 3363 break; 3364 } 3365 cur_io->io_hdr.pool = pool; 3366 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3367 pool->total_ctl_io++; 3368 pool->free_ctl_io++; 3369 } 3370 3371 if (retval != 0) { 3372 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3373 cur_io != NULL; cur_io = next_io) { 3374 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3375 links); 3376 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3377 ctl_io_hdr, links); 3378 free(cur_io, M_CTL); 3379 } 3380 3381 free(pool, M_CTL); 3382 goto bailout; 3383 } 3384 mtx_lock(&ctl_softc->pool_lock); 3385 ctl_softc->num_pools++; 3386 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3387 /* 3388 * Increment our usage count if this is an external consumer, so we 3389 * can't get unloaded until the external consumer (most likely a 3390 * FETD) unloads and frees his pool. 3391 * 3392 * XXX KDM will this increment the caller's module use count, or 3393 * mine? 3394 */ 3395#if 0 3396 if ((pool_type != CTL_POOL_EMERGENCY) 3397 && (pool_type != CTL_POOL_INTERNAL) 3398 && (pool_type != CTL_POOL_IOCTL) 3399 && (pool_type != CTL_POOL_4OTHERSC)) 3400 MOD_INC_USE_COUNT; 3401#endif 3402 3403 mtx_unlock(&ctl_softc->pool_lock); 3404 3405 *npool = pool; 3406 3407bailout: 3408 3409 return (retval); 3410} 3411 3412static int 3413ctl_pool_acquire(struct ctl_io_pool *pool) 3414{ 3415 3416 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3417 3418 if (pool->flags & CTL_POOL_FLAG_INVALID) 3419 return (-EINVAL); 3420 3421 pool->refcount++; 3422 3423 return (0); 3424} 3425 3426static void 3427ctl_pool_release(struct ctl_io_pool *pool) 3428{ 3429 struct ctl_softc *ctl_softc = pool->ctl_softc; 3430 union ctl_io *io; 3431 3432 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3433 3434 if (--pool->refcount != 0) 3435 return; 3436 3437 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3438 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3439 links); 3440 free(io, M_CTL); 3441 } 3442 3443 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3444 ctl_softc->num_pools--; 3445 3446 /* 3447 * XXX KDM will this decrement the caller's usage count or mine? 3448 */ 3449#if 0 3450 if ((pool->type != CTL_POOL_EMERGENCY) 3451 && (pool->type != CTL_POOL_INTERNAL) 3452 && (pool->type != CTL_POOL_IOCTL)) 3453 MOD_DEC_USE_COUNT; 3454#endif 3455 3456 free(pool, M_CTL); 3457} 3458 3459void 3460ctl_pool_free(struct ctl_io_pool *pool) 3461{ 3462 struct ctl_softc *ctl_softc; 3463 3464 if (pool == NULL) 3465 return; 3466 3467 ctl_softc = pool->ctl_softc; 3468 mtx_lock(&ctl_softc->pool_lock); 3469 pool->flags |= CTL_POOL_FLAG_INVALID; 3470 ctl_pool_release(pool); 3471 mtx_unlock(&ctl_softc->pool_lock); 3472} 3473 3474/* 3475 * This routine does not block (except for spinlocks of course). 3476 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3477 * possible. 3478 */ 3479union ctl_io * 3480ctl_alloc_io(void *pool_ref) 3481{ 3482 union ctl_io *io; 3483 struct ctl_softc *ctl_softc; 3484 struct ctl_io_pool *pool, *npool; 3485 struct ctl_io_pool *emergency_pool; 3486 3487 pool = (struct ctl_io_pool *)pool_ref; 3488 3489 if (pool == NULL) { 3490 printf("%s: pool is NULL\n", __func__); 3491 return (NULL); 3492 } 3493 3494 emergency_pool = NULL; 3495 3496 ctl_softc = pool->ctl_softc; 3497 3498 mtx_lock(&ctl_softc->pool_lock); 3499 /* 3500 * First, try to get the io structure from the user's pool. 3501 */ 3502 if (ctl_pool_acquire(pool) == 0) { 3503 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3504 if (io != NULL) { 3505 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3506 pool->total_allocated++; 3507 pool->free_ctl_io--; 3508 mtx_unlock(&ctl_softc->pool_lock); 3509 return (io); 3510 } else 3511 ctl_pool_release(pool); 3512 } 3513 /* 3514 * If he doesn't have any io structures left, search for an 3515 * emergency pool and grab one from there. 3516 */ 3517 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3518 if (npool->type != CTL_POOL_EMERGENCY) 3519 continue; 3520 3521 if (ctl_pool_acquire(npool) != 0) 3522 continue; 3523 3524 emergency_pool = npool; 3525 3526 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3527 if (io != NULL) { 3528 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3529 npool->total_allocated++; 3530 npool->free_ctl_io--; 3531 mtx_unlock(&ctl_softc->pool_lock); 3532 return (io); 3533 } else 3534 ctl_pool_release(npool); 3535 } 3536 3537 /* Drop the spinlock before we malloc */ 3538 mtx_unlock(&ctl_softc->pool_lock); 3539 3540 /* 3541 * The emergency pool (if it exists) didn't have one, so try an 3542 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3543 */ 3544 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3545 if (io != NULL) { 3546 /* 3547 * If the emergency pool exists but is empty, add this 3548 * ctl_io to its list when it gets freed. 3549 */ 3550 if (emergency_pool != NULL) { 3551 mtx_lock(&ctl_softc->pool_lock); 3552 if (ctl_pool_acquire(emergency_pool) == 0) { 3553 io->io_hdr.pool = emergency_pool; 3554 emergency_pool->total_ctl_io++; 3555 /* 3556 * Need to bump this, otherwise 3557 * total_allocated and total_freed won't 3558 * match when we no longer have anything 3559 * outstanding. 3560 */ 3561 emergency_pool->total_allocated++; 3562 } 3563 mtx_unlock(&ctl_softc->pool_lock); 3564 } else 3565 io->io_hdr.pool = NULL; 3566 } 3567 3568 return (io); 3569} 3570 3571void 3572ctl_free_io(union ctl_io *io) 3573{ 3574 if (io == NULL) 3575 return; 3576 3577 /* 3578 * If this ctl_io has a pool, return it to that pool. 3579 */ 3580 if (io->io_hdr.pool != NULL) { 3581 struct ctl_io_pool *pool; 3582 3583 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3584 mtx_lock(&pool->ctl_softc->pool_lock); 3585 io->io_hdr.io_type = 0xff; 3586 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3587 pool->total_freed++; 3588 pool->free_ctl_io++; 3589 ctl_pool_release(pool); 3590 mtx_unlock(&pool->ctl_softc->pool_lock); 3591 } else { 3592 /* 3593 * Otherwise, just free it. We probably malloced it and 3594 * the emergency pool wasn't available. 3595 */ 3596 free(io, M_CTL); 3597 } 3598 3599} 3600 3601void 3602ctl_zero_io(union ctl_io *io) 3603{ 3604 void *pool_ref; 3605 3606 if (io == NULL) 3607 return; 3608 3609 /* 3610 * May need to preserve linked list pointers at some point too. 3611 */ 3612 pool_ref = io->io_hdr.pool; 3613 3614 memset(io, 0, sizeof(*io)); 3615 3616 io->io_hdr.pool = pool_ref; 3617} 3618 3619/* 3620 * This routine is currently used for internal copies of ctl_ios that need 3621 * to persist for some reason after we've already returned status to the 3622 * FETD. (Thus the flag set.) 3623 * 3624 * XXX XXX 3625 * Note that this makes a blind copy of all fields in the ctl_io, except 3626 * for the pool reference. This includes any memory that has been 3627 * allocated! That memory will no longer be valid after done has been 3628 * called, so this would be VERY DANGEROUS for command that actually does 3629 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3630 * start and stop commands, which don't transfer any data, so this is not a 3631 * problem. If it is used for anything else, the caller would also need to 3632 * allocate data buffer space and this routine would need to be modified to 3633 * copy the data buffer(s) as well. 3634 */ 3635void 3636ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3637{ 3638 void *pool_ref; 3639 3640 if ((src == NULL) 3641 || (dest == NULL)) 3642 return; 3643 3644 /* 3645 * May need to preserve linked list pointers at some point too. 3646 */ 3647 pool_ref = dest->io_hdr.pool; 3648 3649 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3650 3651 dest->io_hdr.pool = pool_ref; 3652 /* 3653 * We need to know that this is an internal copy, and doesn't need 3654 * to get passed back to the FETD that allocated it. 3655 */ 3656 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3657} 3658 3659#ifdef NEEDTOPORT 3660static void 3661ctl_update_power_subpage(struct copan_power_subpage *page) 3662{ 3663 int num_luns, num_partitions, config_type; 3664 struct ctl_softc *softc; 3665 cs_BOOL_t aor_present, shelf_50pct_power; 3666 cs_raidset_personality_t rs_type; 3667 int max_active_luns; 3668 3669 softc = control_softc; 3670 3671 /* subtract out the processor LUN */ 3672 num_luns = softc->num_luns - 1; 3673 /* 3674 * Default to 7 LUNs active, which was the only number we allowed 3675 * in the past. 3676 */ 3677 max_active_luns = 7; 3678 3679 num_partitions = config_GetRsPartitionInfo(); 3680 config_type = config_GetConfigType(); 3681 shelf_50pct_power = config_GetShelfPowerMode(); 3682 aor_present = config_IsAorRsPresent(); 3683 3684 rs_type = ddb_GetRsRaidType(1); 3685 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3686 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3687 EPRINT(0, "Unsupported RS type %d!", rs_type); 3688 } 3689 3690 3691 page->total_luns = num_luns; 3692 3693 switch (config_type) { 3694 case 40: 3695 /* 3696 * In a 40 drive configuration, it doesn't matter what DC 3697 * cards we have, whether we have AOR enabled or not, 3698 * partitioning or not, or what type of RAIDset we have. 3699 * In that scenario, we can power up every LUN we present 3700 * to the user. 3701 */ 3702 max_active_luns = num_luns; 3703 3704 break; 3705 case 64: 3706 if (shelf_50pct_power == CS_FALSE) { 3707 /* 25% power */ 3708 if (aor_present == CS_TRUE) { 3709 if (rs_type == 3710 CS_RAIDSET_PERSONALITY_RAID5) { 3711 max_active_luns = 7; 3712 } else if (rs_type == 3713 CS_RAIDSET_PERSONALITY_RAID1){ 3714 max_active_luns = 14; 3715 } else { 3716 /* XXX KDM now what?? */ 3717 } 3718 } else { 3719 if (rs_type == 3720 CS_RAIDSET_PERSONALITY_RAID5) { 3721 max_active_luns = 8; 3722 } else if (rs_type == 3723 CS_RAIDSET_PERSONALITY_RAID1){ 3724 max_active_luns = 16; 3725 } else { 3726 /* XXX KDM now what?? */ 3727 } 3728 } 3729 } else { 3730 /* 50% power */ 3731 /* 3732 * With 50% power in a 64 drive configuration, we 3733 * can power all LUNs we present. 3734 */ 3735 max_active_luns = num_luns; 3736 } 3737 break; 3738 case 112: 3739 if (shelf_50pct_power == CS_FALSE) { 3740 /* 25% power */ 3741 if (aor_present == CS_TRUE) { 3742 if (rs_type == 3743 CS_RAIDSET_PERSONALITY_RAID5) { 3744 max_active_luns = 7; 3745 } else if (rs_type == 3746 CS_RAIDSET_PERSONALITY_RAID1){ 3747 max_active_luns = 14; 3748 } else { 3749 /* XXX KDM now what?? */ 3750 } 3751 } else { 3752 if (rs_type == 3753 CS_RAIDSET_PERSONALITY_RAID5) { 3754 max_active_luns = 8; 3755 } else if (rs_type == 3756 CS_RAIDSET_PERSONALITY_RAID1){ 3757 max_active_luns = 16; 3758 } else { 3759 /* XXX KDM now what?? */ 3760 } 3761 } 3762 } else { 3763 /* 50% power */ 3764 if (aor_present == CS_TRUE) { 3765 if (rs_type == 3766 CS_RAIDSET_PERSONALITY_RAID5) { 3767 max_active_luns = 14; 3768 } else if (rs_type == 3769 CS_RAIDSET_PERSONALITY_RAID1){ 3770 /* 3771 * We're assuming here that disk 3772 * caching is enabled, and so we're 3773 * able to power up half of each 3774 * LUN, and cache all writes. 3775 */ 3776 max_active_luns = num_luns; 3777 } else { 3778 /* XXX KDM now what?? */ 3779 } 3780 } else { 3781 if (rs_type == 3782 CS_RAIDSET_PERSONALITY_RAID5) { 3783 max_active_luns = 15; 3784 } else if (rs_type == 3785 CS_RAIDSET_PERSONALITY_RAID1){ 3786 max_active_luns = 30; 3787 } else { 3788 /* XXX KDM now what?? */ 3789 } 3790 } 3791 } 3792 break; 3793 default: 3794 /* 3795 * In this case, we have an unknown configuration, so we 3796 * just use the default from above. 3797 */ 3798 break; 3799 } 3800 3801 page->max_active_luns = max_active_luns; 3802#if 0 3803 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3804 page->total_luns, page->max_active_luns); 3805#endif 3806} 3807#endif /* NEEDTOPORT */ 3808 3809/* 3810 * This routine could be used in the future to load default and/or saved 3811 * mode page parameters for a particuar lun. 3812 */ 3813static int 3814ctl_init_page_index(struct ctl_lun *lun) 3815{ 3816 int i; 3817 struct ctl_page_index *page_index; 3818 struct ctl_softc *softc; 3819 3820 memcpy(&lun->mode_pages.index, page_index_template, 3821 sizeof(page_index_template)); 3822 3823 softc = lun->ctl_softc; 3824 3825 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3826 3827 page_index = &lun->mode_pages.index[i]; 3828 /* 3829 * If this is a disk-only mode page, there's no point in 3830 * setting it up. For some pages, we have to have some 3831 * basic information about the disk in order to calculate the 3832 * mode page data. 3833 */ 3834 if ((lun->be_lun->lun_type != T_DIRECT) 3835 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3836 continue; 3837 3838 switch (page_index->page_code & SMPH_PC_MASK) { 3839 case SMS_FORMAT_DEVICE_PAGE: { 3840 struct scsi_format_page *format_page; 3841 3842 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3843 panic("subpage is incorrect!"); 3844 3845 /* 3846 * Sectors per track are set above. Bytes per 3847 * sector need to be set here on a per-LUN basis. 3848 */ 3849 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3850 &format_page_default, 3851 sizeof(format_page_default)); 3852 memcpy(&lun->mode_pages.format_page[ 3853 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3854 sizeof(format_page_changeable)); 3855 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3856 &format_page_default, 3857 sizeof(format_page_default)); 3858 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3859 &format_page_default, 3860 sizeof(format_page_default)); 3861 3862 format_page = &lun->mode_pages.format_page[ 3863 CTL_PAGE_CURRENT]; 3864 scsi_ulto2b(lun->be_lun->blocksize, 3865 format_page->bytes_per_sector); 3866 3867 format_page = &lun->mode_pages.format_page[ 3868 CTL_PAGE_DEFAULT]; 3869 scsi_ulto2b(lun->be_lun->blocksize, 3870 format_page->bytes_per_sector); 3871 3872 format_page = &lun->mode_pages.format_page[ 3873 CTL_PAGE_SAVED]; 3874 scsi_ulto2b(lun->be_lun->blocksize, 3875 format_page->bytes_per_sector); 3876 3877 page_index->page_data = 3878 (uint8_t *)lun->mode_pages.format_page; 3879 break; 3880 } 3881 case SMS_RIGID_DISK_PAGE: { 3882 struct scsi_rigid_disk_page *rigid_disk_page; 3883 uint32_t sectors_per_cylinder; 3884 uint64_t cylinders; 3885#ifndef __XSCALE__ 3886 int shift; 3887#endif /* !__XSCALE__ */ 3888 3889 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3890 panic("invalid subpage value %d", 3891 page_index->subpage); 3892 3893 /* 3894 * Rotation rate and sectors per track are set 3895 * above. We calculate the cylinders here based on 3896 * capacity. Due to the number of heads and 3897 * sectors per track we're using, smaller arrays 3898 * may turn out to have 0 cylinders. Linux and 3899 * FreeBSD don't pay attention to these mode pages 3900 * to figure out capacity, but Solaris does. It 3901 * seems to deal with 0 cylinders just fine, and 3902 * works out a fake geometry based on the capacity. 3903 */ 3904 memcpy(&lun->mode_pages.rigid_disk_page[ 3905 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3906 sizeof(rigid_disk_page_default)); 3907 memcpy(&lun->mode_pages.rigid_disk_page[ 3908 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3909 sizeof(rigid_disk_page_changeable)); 3910 memcpy(&lun->mode_pages.rigid_disk_page[ 3911 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3912 sizeof(rigid_disk_page_default)); 3913 memcpy(&lun->mode_pages.rigid_disk_page[ 3914 CTL_PAGE_SAVED], &rigid_disk_page_default, 3915 sizeof(rigid_disk_page_default)); 3916 3917 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3918 CTL_DEFAULT_HEADS; 3919 3920 /* 3921 * The divide method here will be more accurate, 3922 * probably, but results in floating point being 3923 * used in the kernel on i386 (__udivdi3()). On the 3924 * XScale, though, __udivdi3() is implemented in 3925 * software. 3926 * 3927 * The shift method for cylinder calculation is 3928 * accurate if sectors_per_cylinder is a power of 3929 * 2. Otherwise it might be slightly off -- you 3930 * might have a bit of a truncation problem. 3931 */ 3932#ifdef __XSCALE__ 3933 cylinders = (lun->be_lun->maxlba + 1) / 3934 sectors_per_cylinder; 3935#else 3936 for (shift = 31; shift > 0; shift--) { 3937 if (sectors_per_cylinder & (1 << shift)) 3938 break; 3939 } 3940 cylinders = (lun->be_lun->maxlba + 1) >> shift; 3941#endif 3942 3943 /* 3944 * We've basically got 3 bytes, or 24 bits for the 3945 * cylinder size in the mode page. If we're over, 3946 * just round down to 2^24. 3947 */ 3948 if (cylinders > 0xffffff) 3949 cylinders = 0xffffff; 3950 3951 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3952 CTL_PAGE_CURRENT]; 3953 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3954 3955 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3956 CTL_PAGE_DEFAULT]; 3957 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3958 3959 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3960 CTL_PAGE_SAVED]; 3961 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3962 3963 page_index->page_data = 3964 (uint8_t *)lun->mode_pages.rigid_disk_page; 3965 break; 3966 } 3967 case SMS_CACHING_PAGE: { 3968 3969 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3970 panic("invalid subpage value %d", 3971 page_index->subpage); 3972 /* 3973 * Defaults should be okay here, no calculations 3974 * needed. 3975 */ 3976 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 3977 &caching_page_default, 3978 sizeof(caching_page_default)); 3979 memcpy(&lun->mode_pages.caching_page[ 3980 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 3981 sizeof(caching_page_changeable)); 3982 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 3983 &caching_page_default, 3984 sizeof(caching_page_default)); 3985 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 3986 &caching_page_default, 3987 sizeof(caching_page_default)); 3988 page_index->page_data = 3989 (uint8_t *)lun->mode_pages.caching_page; 3990 break; 3991 } 3992 case SMS_CONTROL_MODE_PAGE: { 3993 3994 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3995 panic("invalid subpage value %d", 3996 page_index->subpage); 3997 3998 /* 3999 * Defaults should be okay here, no calculations 4000 * needed. 4001 */ 4002 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4003 &control_page_default, 4004 sizeof(control_page_default)); 4005 memcpy(&lun->mode_pages.control_page[ 4006 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4007 sizeof(control_page_changeable)); 4008 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4009 &control_page_default, 4010 sizeof(control_page_default)); 4011 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4012 &control_page_default, 4013 sizeof(control_page_default)); 4014 page_index->page_data = 4015 (uint8_t *)lun->mode_pages.control_page; 4016 break; 4017 4018 } 4019 case SMS_VENDOR_SPECIFIC_PAGE:{ 4020 switch (page_index->subpage) { 4021 case PWR_SUBPAGE_CODE: { 4022 struct copan_power_subpage *current_page, 4023 *saved_page; 4024 4025 memcpy(&lun->mode_pages.power_subpage[ 4026 CTL_PAGE_CURRENT], 4027 &power_page_default, 4028 sizeof(power_page_default)); 4029 memcpy(&lun->mode_pages.power_subpage[ 4030 CTL_PAGE_CHANGEABLE], 4031 &power_page_changeable, 4032 sizeof(power_page_changeable)); 4033 memcpy(&lun->mode_pages.power_subpage[ 4034 CTL_PAGE_DEFAULT], 4035 &power_page_default, 4036 sizeof(power_page_default)); 4037 memcpy(&lun->mode_pages.power_subpage[ 4038 CTL_PAGE_SAVED], 4039 &power_page_default, 4040 sizeof(power_page_default)); 4041 page_index->page_data = 4042 (uint8_t *)lun->mode_pages.power_subpage; 4043 4044 current_page = (struct copan_power_subpage *) 4045 (page_index->page_data + 4046 (page_index->page_len * 4047 CTL_PAGE_CURRENT)); 4048 saved_page = (struct copan_power_subpage *) 4049 (page_index->page_data + 4050 (page_index->page_len * 4051 CTL_PAGE_SAVED)); 4052 break; 4053 } 4054 case APS_SUBPAGE_CODE: { 4055 struct copan_aps_subpage *current_page, 4056 *saved_page; 4057 4058 // This gets set multiple times but 4059 // it should always be the same. It's 4060 // only done during init so who cares. 4061 index_to_aps_page = i; 4062 4063 memcpy(&lun->mode_pages.aps_subpage[ 4064 CTL_PAGE_CURRENT], 4065 &aps_page_default, 4066 sizeof(aps_page_default)); 4067 memcpy(&lun->mode_pages.aps_subpage[ 4068 CTL_PAGE_CHANGEABLE], 4069 &aps_page_changeable, 4070 sizeof(aps_page_changeable)); 4071 memcpy(&lun->mode_pages.aps_subpage[ 4072 CTL_PAGE_DEFAULT], 4073 &aps_page_default, 4074 sizeof(aps_page_default)); 4075 memcpy(&lun->mode_pages.aps_subpage[ 4076 CTL_PAGE_SAVED], 4077 &aps_page_default, 4078 sizeof(aps_page_default)); 4079 page_index->page_data = 4080 (uint8_t *)lun->mode_pages.aps_subpage; 4081 4082 current_page = (struct copan_aps_subpage *) 4083 (page_index->page_data + 4084 (page_index->page_len * 4085 CTL_PAGE_CURRENT)); 4086 saved_page = (struct copan_aps_subpage *) 4087 (page_index->page_data + 4088 (page_index->page_len * 4089 CTL_PAGE_SAVED)); 4090 break; 4091 } 4092 case DBGCNF_SUBPAGE_CODE: { 4093 struct copan_debugconf_subpage *current_page, 4094 *saved_page; 4095 4096 memcpy(&lun->mode_pages.debugconf_subpage[ 4097 CTL_PAGE_CURRENT], 4098 &debugconf_page_default, 4099 sizeof(debugconf_page_default)); 4100 memcpy(&lun->mode_pages.debugconf_subpage[ 4101 CTL_PAGE_CHANGEABLE], 4102 &debugconf_page_changeable, 4103 sizeof(debugconf_page_changeable)); 4104 memcpy(&lun->mode_pages.debugconf_subpage[ 4105 CTL_PAGE_DEFAULT], 4106 &debugconf_page_default, 4107 sizeof(debugconf_page_default)); 4108 memcpy(&lun->mode_pages.debugconf_subpage[ 4109 CTL_PAGE_SAVED], 4110 &debugconf_page_default, 4111 sizeof(debugconf_page_default)); 4112 page_index->page_data = 4113 (uint8_t *)lun->mode_pages.debugconf_subpage; 4114 4115 current_page = (struct copan_debugconf_subpage *) 4116 (page_index->page_data + 4117 (page_index->page_len * 4118 CTL_PAGE_CURRENT)); 4119 saved_page = (struct copan_debugconf_subpage *) 4120 (page_index->page_data + 4121 (page_index->page_len * 4122 CTL_PAGE_SAVED)); 4123 break; 4124 } 4125 default: 4126 panic("invalid subpage value %d", 4127 page_index->subpage); 4128 break; 4129 } 4130 break; 4131 } 4132 default: 4133 panic("invalid page value %d", 4134 page_index->page_code & SMPH_PC_MASK); 4135 break; 4136 } 4137 } 4138 4139 return (CTL_RETVAL_COMPLETE); 4140} 4141 4142/* 4143 * LUN allocation. 4144 * 4145 * Requirements: 4146 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4147 * wants us to allocate the LUN and he can block. 4148 * - ctl_softc is always set 4149 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4150 * 4151 * Returns 0 for success, non-zero (errno) for failure. 4152 */ 4153static int 4154ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4155 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4156{ 4157 struct ctl_lun *nlun, *lun; 4158 struct ctl_frontend *fe; 4159 int lun_number, i, lun_malloced; 4160 4161 if (be_lun == NULL) 4162 return (EINVAL); 4163 4164 /* 4165 * We currently only support Direct Access or Processor LUN types. 4166 */ 4167 switch (be_lun->lun_type) { 4168 case T_DIRECT: 4169 break; 4170 case T_PROCESSOR: 4171 break; 4172 case T_SEQUENTIAL: 4173 case T_CHANGER: 4174 default: 4175 be_lun->lun_config_status(be_lun->be_lun, 4176 CTL_LUN_CONFIG_FAILURE); 4177 break; 4178 } 4179 if (ctl_lun == NULL) { 4180 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4181 lun_malloced = 1; 4182 } else { 4183 lun_malloced = 0; 4184 lun = ctl_lun; 4185 } 4186 4187 memset(lun, 0, sizeof(*lun)); 4188 if (lun_malloced) 4189 lun->flags = CTL_LUN_MALLOCED; 4190 4191 mtx_lock(&ctl_softc->ctl_lock); 4192 /* 4193 * See if the caller requested a particular LUN number. If so, see 4194 * if it is available. Otherwise, allocate the first available LUN. 4195 */ 4196 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4197 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4198 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4199 mtx_unlock(&ctl_softc->ctl_lock); 4200 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4201 printf("ctl: requested LUN ID %d is higher " 4202 "than CTL_MAX_LUNS - 1 (%d)\n", 4203 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4204 } else { 4205 /* 4206 * XXX KDM return an error, or just assign 4207 * another LUN ID in this case?? 4208 */ 4209 printf("ctl: requested LUN ID %d is already " 4210 "in use\n", be_lun->req_lun_id); 4211 } 4212 if (lun->flags & CTL_LUN_MALLOCED) 4213 free(lun, M_CTL); 4214 be_lun->lun_config_status(be_lun->be_lun, 4215 CTL_LUN_CONFIG_FAILURE); 4216 return (ENOSPC); 4217 } 4218 lun_number = be_lun->req_lun_id; 4219 } else { 4220 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4221 if (lun_number == -1) { 4222 mtx_unlock(&ctl_softc->ctl_lock); 4223 printf("ctl: can't allocate LUN on target %ju, out of " 4224 "LUNs\n", (uintmax_t)target_id.id); 4225 if (lun->flags & CTL_LUN_MALLOCED) 4226 free(lun, M_CTL); 4227 be_lun->lun_config_status(be_lun->be_lun, 4228 CTL_LUN_CONFIG_FAILURE); 4229 return (ENOSPC); 4230 } 4231 } 4232 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4233 4234 mtx_init(&lun->lun_lock, "CTL LUN", NULL, MTX_DEF); 4235 lun->target = target_id; 4236 lun->lun = lun_number; 4237 lun->be_lun = be_lun; 4238 /* 4239 * The processor LUN is always enabled. Disk LUNs come on line 4240 * disabled, and must be enabled by the backend. 4241 */ 4242 lun->flags |= CTL_LUN_DISABLED; 4243 lun->backend = be_lun->be; 4244 be_lun->ctl_lun = lun; 4245 be_lun->lun_id = lun_number; 4246 atomic_add_int(&be_lun->be->num_luns, 1); 4247 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4248 lun->flags |= CTL_LUN_STOPPED; 4249 4250 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4251 lun->flags |= CTL_LUN_INOPERABLE; 4252 4253 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4254 lun->flags |= CTL_LUN_PRIMARY_SC; 4255 4256 lun->ctl_softc = ctl_softc; 4257 TAILQ_INIT(&lun->ooa_queue); 4258 TAILQ_INIT(&lun->blocked_queue); 4259 STAILQ_INIT(&lun->error_list); 4260 4261 /* 4262 * Initialize the mode page index. 4263 */ 4264 ctl_init_page_index(lun); 4265 4266 /* 4267 * Set the poweron UA for all initiators on this LUN only. 4268 */ 4269 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4270 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4271 4272 /* 4273 * Now, before we insert this lun on the lun list, set the lun 4274 * inventory changed UA for all other luns. 4275 */ 4276 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4277 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4278 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4279 } 4280 } 4281 4282 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4283 4284 ctl_softc->ctl_luns[lun_number] = lun; 4285 4286 ctl_softc->num_luns++; 4287 4288 /* Setup statistics gathering */ 4289 lun->stats.device_type = be_lun->lun_type; 4290 lun->stats.lun_number = lun_number; 4291 if (lun->stats.device_type == T_DIRECT) 4292 lun->stats.blocksize = be_lun->blocksize; 4293 else 4294 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4295 for (i = 0;i < CTL_MAX_PORTS;i++) 4296 lun->stats.ports[i].targ_port = i; 4297 4298 mtx_unlock(&ctl_softc->ctl_lock); 4299 4300 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4301 4302 /* 4303 * Run through each registered FETD and bring it online if it isn't 4304 * already. Enable the target ID if it hasn't been enabled, and 4305 * enable this particular LUN. 4306 */ 4307 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4308 int retval; 4309 4310 /* 4311 * XXX KDM this only works for ONE TARGET ID. We'll need 4312 * to do things differently if we go to a multiple target 4313 * ID scheme. 4314 */ 4315 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4316 4317 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4318 if (retval != 0) { 4319 printf("ctl_alloc_lun: FETD %s port %d " 4320 "returned error %d for targ_enable on " 4321 "target %ju\n", fe->port_name, 4322 fe->targ_port, retval, 4323 (uintmax_t)target_id.id); 4324 } else 4325 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4326 } 4327 4328 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4329 if (retval != 0) { 4330 printf("ctl_alloc_lun: FETD %s port %d returned error " 4331 "%d for lun_enable on target %ju lun %d\n", 4332 fe->port_name, fe->targ_port, retval, 4333 (uintmax_t)target_id.id, lun_number); 4334 } else 4335 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4336 } 4337 return (0); 4338} 4339 4340/* 4341 * Delete a LUN. 4342 * Assumptions: 4343 * - LUN has already been marked invalid and any pending I/O has been taken 4344 * care of. 4345 */ 4346static int 4347ctl_free_lun(struct ctl_lun *lun) 4348{ 4349 struct ctl_softc *softc; 4350#if 0 4351 struct ctl_frontend *fe; 4352#endif 4353 struct ctl_lun *nlun; 4354 int i; 4355 4356 softc = lun->ctl_softc; 4357 4358 mtx_assert(&softc->ctl_lock, MA_OWNED); 4359 4360 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4361 4362 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4363 4364 softc->ctl_luns[lun->lun] = NULL; 4365 4366 if (!TAILQ_EMPTY(&lun->ooa_queue)) 4367 panic("Freeing a LUN %p with outstanding I/O!!\n", lun); 4368 4369 softc->num_luns--; 4370 4371 /* 4372 * XXX KDM this scheme only works for a single target/multiple LUN 4373 * setup. It needs to be revamped for a multiple target scheme. 4374 * 4375 * XXX KDM this results in fe->lun_disable() getting called twice, 4376 * once when ctl_disable_lun() is called, and a second time here. 4377 * We really need to re-think the LUN disable semantics. There 4378 * should probably be several steps/levels to LUN removal: 4379 * - disable 4380 * - invalidate 4381 * - free 4382 * 4383 * Right now we only have a disable method when communicating to 4384 * the front end ports, at least for individual LUNs. 4385 */ 4386#if 0 4387 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4388 int retval; 4389 4390 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4391 lun->lun); 4392 if (retval != 0) { 4393 printf("ctl_free_lun: FETD %s port %d returned error " 4394 "%d for lun_disable on target %ju lun %jd\n", 4395 fe->port_name, fe->targ_port, retval, 4396 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4397 } 4398 4399 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4400 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4401 4402 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4403 if (retval != 0) { 4404 printf("ctl_free_lun: FETD %s port %d " 4405 "returned error %d for targ_disable on " 4406 "target %ju\n", fe->port_name, 4407 fe->targ_port, retval, 4408 (uintmax_t)lun->target.id); 4409 } else 4410 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4411 4412 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4413 continue; 4414 4415#if 0 4416 fe->port_offline(fe->onoff_arg); 4417 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4418#endif 4419 } 4420 } 4421#endif 4422 4423 /* 4424 * Tell the backend to free resources, if this LUN has a backend. 4425 */ 4426 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4427 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4428 4429 mtx_destroy(&lun->lun_lock); 4430 if (lun->flags & CTL_LUN_MALLOCED) 4431 free(lun, M_CTL); 4432 4433 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4434 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4435 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4436 } 4437 } 4438 4439 return (0); 4440} 4441 4442static void 4443ctl_create_lun(struct ctl_be_lun *be_lun) 4444{ 4445 struct ctl_softc *ctl_softc; 4446 4447 ctl_softc = control_softc; 4448 4449 /* 4450 * ctl_alloc_lun() should handle all potential failure cases. 4451 */ 4452 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4453} 4454 4455int 4456ctl_add_lun(struct ctl_be_lun *be_lun) 4457{ 4458 struct ctl_softc *ctl_softc = control_softc; 4459 4460 mtx_lock(&ctl_softc->ctl_lock); 4461 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4462 mtx_unlock(&ctl_softc->ctl_lock); 4463 wakeup(&ctl_softc->pending_lun_queue); 4464 4465 return (0); 4466} 4467 4468int 4469ctl_enable_lun(struct ctl_be_lun *be_lun) 4470{ 4471 struct ctl_softc *ctl_softc; 4472 struct ctl_frontend *fe, *nfe; 4473 struct ctl_lun *lun; 4474 int retval; 4475 4476 ctl_softc = control_softc; 4477 4478 lun = (struct ctl_lun *)be_lun->ctl_lun; 4479 4480 mtx_lock(&ctl_softc->ctl_lock); 4481 mtx_lock(&lun->lun_lock); 4482 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4483 /* 4484 * eh? Why did we get called if the LUN is already 4485 * enabled? 4486 */ 4487 mtx_unlock(&lun->lun_lock); 4488 mtx_unlock(&ctl_softc->ctl_lock); 4489 return (0); 4490 } 4491 lun->flags &= ~CTL_LUN_DISABLED; 4492 mtx_unlock(&lun->lun_lock); 4493 4494 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4495 nfe = STAILQ_NEXT(fe, links); 4496 4497 /* 4498 * Drop the lock while we call the FETD's enable routine. 4499 * This can lead to a callback into CTL (at least in the 4500 * case of the internal initiator frontend. 4501 */ 4502 mtx_unlock(&ctl_softc->ctl_lock); 4503 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4504 mtx_lock(&ctl_softc->ctl_lock); 4505 if (retval != 0) { 4506 printf("%s: FETD %s port %d returned error " 4507 "%d for lun_enable on target %ju lun %jd\n", 4508 __func__, fe->port_name, fe->targ_port, retval, 4509 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4510 } 4511#if 0 4512 else { 4513 /* NOTE: TODO: why does lun enable affect port status? */ 4514 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4515 } 4516#endif 4517 } 4518 4519 mtx_unlock(&ctl_softc->ctl_lock); 4520 4521 return (0); 4522} 4523 4524int 4525ctl_disable_lun(struct ctl_be_lun *be_lun) 4526{ 4527 struct ctl_softc *ctl_softc; 4528 struct ctl_frontend *fe; 4529 struct ctl_lun *lun; 4530 int retval; 4531 4532 ctl_softc = control_softc; 4533 4534 lun = (struct ctl_lun *)be_lun->ctl_lun; 4535 4536 mtx_lock(&ctl_softc->ctl_lock); 4537 mtx_lock(&lun->lun_lock); 4538 if (lun->flags & CTL_LUN_DISABLED) { 4539 mtx_unlock(&lun->lun_lock); 4540 mtx_unlock(&ctl_softc->ctl_lock); 4541 return (0); 4542 } 4543 lun->flags |= CTL_LUN_DISABLED; 4544 mtx_unlock(&lun->lun_lock); 4545 4546 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4547 mtx_unlock(&ctl_softc->ctl_lock); 4548 /* 4549 * Drop the lock before we call the frontend's disable 4550 * routine, to avoid lock order reversals. 4551 * 4552 * XXX KDM what happens if the frontend list changes while 4553 * we're traversing it? It's unlikely, but should be handled. 4554 */ 4555 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4556 lun->lun); 4557 mtx_lock(&ctl_softc->ctl_lock); 4558 if (retval != 0) { 4559 printf("ctl_alloc_lun: FETD %s port %d returned error " 4560 "%d for lun_disable on target %ju lun %jd\n", 4561 fe->port_name, fe->targ_port, retval, 4562 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4563 } 4564 } 4565 4566 mtx_unlock(&ctl_softc->ctl_lock); 4567 4568 return (0); 4569} 4570 4571int 4572ctl_start_lun(struct ctl_be_lun *be_lun) 4573{ 4574 struct ctl_softc *ctl_softc; 4575 struct ctl_lun *lun; 4576 4577 ctl_softc = control_softc; 4578 4579 lun = (struct ctl_lun *)be_lun->ctl_lun; 4580 4581 mtx_lock(&lun->lun_lock); 4582 lun->flags &= ~CTL_LUN_STOPPED; 4583 mtx_unlock(&lun->lun_lock); 4584 4585 return (0); 4586} 4587 4588int 4589ctl_stop_lun(struct ctl_be_lun *be_lun) 4590{ 4591 struct ctl_softc *ctl_softc; 4592 struct ctl_lun *lun; 4593 4594 ctl_softc = control_softc; 4595 4596 lun = (struct ctl_lun *)be_lun->ctl_lun; 4597 4598 mtx_lock(&lun->lun_lock); 4599 lun->flags |= CTL_LUN_STOPPED; 4600 mtx_unlock(&lun->lun_lock); 4601 4602 return (0); 4603} 4604 4605int 4606ctl_lun_offline(struct ctl_be_lun *be_lun) 4607{ 4608 struct ctl_softc *ctl_softc; 4609 struct ctl_lun *lun; 4610 4611 ctl_softc = control_softc; 4612 4613 lun = (struct ctl_lun *)be_lun->ctl_lun; 4614 4615 mtx_lock(&lun->lun_lock); 4616 lun->flags |= CTL_LUN_OFFLINE; 4617 mtx_unlock(&lun->lun_lock); 4618 4619 return (0); 4620} 4621 4622int 4623ctl_lun_online(struct ctl_be_lun *be_lun) 4624{ 4625 struct ctl_softc *ctl_softc; 4626 struct ctl_lun *lun; 4627 4628 ctl_softc = control_softc; 4629 4630 lun = (struct ctl_lun *)be_lun->ctl_lun; 4631 4632 mtx_lock(&lun->lun_lock); 4633 lun->flags &= ~CTL_LUN_OFFLINE; 4634 mtx_unlock(&lun->lun_lock); 4635 4636 return (0); 4637} 4638 4639int 4640ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4641{ 4642 struct ctl_softc *ctl_softc; 4643 struct ctl_lun *lun; 4644 4645 ctl_softc = control_softc; 4646 4647 lun = (struct ctl_lun *)be_lun->ctl_lun; 4648 4649 mtx_lock(&lun->lun_lock); 4650 4651 /* 4652 * The LUN needs to be disabled before it can be marked invalid. 4653 */ 4654 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4655 mtx_unlock(&lun->lun_lock); 4656 return (-1); 4657 } 4658 /* 4659 * Mark the LUN invalid. 4660 */ 4661 lun->flags |= CTL_LUN_INVALID; 4662 4663 /* 4664 * If there is nothing in the OOA queue, go ahead and free the LUN. 4665 * If we have something in the OOA queue, we'll free it when the 4666 * last I/O completes. 4667 */ 4668 if (TAILQ_EMPTY(&lun->ooa_queue)) { 4669 mtx_unlock(&lun->lun_lock); 4670 mtx_lock(&ctl_softc->ctl_lock); 4671 ctl_free_lun(lun); 4672 mtx_unlock(&ctl_softc->ctl_lock); 4673 } else 4674 mtx_unlock(&lun->lun_lock); 4675 4676 return (0); 4677} 4678 4679int 4680ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4681{ 4682 struct ctl_softc *ctl_softc; 4683 struct ctl_lun *lun; 4684 4685 ctl_softc = control_softc; 4686 lun = (struct ctl_lun *)be_lun->ctl_lun; 4687 4688 mtx_lock(&lun->lun_lock); 4689 lun->flags |= CTL_LUN_INOPERABLE; 4690 mtx_unlock(&lun->lun_lock); 4691 4692 return (0); 4693} 4694 4695int 4696ctl_lun_operable(struct ctl_be_lun *be_lun) 4697{ 4698 struct ctl_softc *ctl_softc; 4699 struct ctl_lun *lun; 4700 4701 ctl_softc = control_softc; 4702 lun = (struct ctl_lun *)be_lun->ctl_lun; 4703 4704 mtx_lock(&lun->lun_lock); 4705 lun->flags &= ~CTL_LUN_INOPERABLE; 4706 mtx_unlock(&lun->lun_lock); 4707 4708 return (0); 4709} 4710 4711int 4712ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4713 int lock) 4714{ 4715 struct ctl_softc *softc; 4716 struct ctl_lun *lun; 4717 struct copan_aps_subpage *current_sp; 4718 struct ctl_page_index *page_index; 4719 int i; 4720 4721 softc = control_softc; 4722 4723 mtx_lock(&softc->ctl_lock); 4724 4725 lun = (struct ctl_lun *)be_lun->ctl_lun; 4726 mtx_lock(&lun->lun_lock); 4727 4728 page_index = NULL; 4729 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4730 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4731 APS_PAGE_CODE) 4732 continue; 4733 4734 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4735 continue; 4736 page_index = &lun->mode_pages.index[i]; 4737 } 4738 4739 if (page_index == NULL) { 4740 mtx_unlock(&lun->lun_lock); 4741 mtx_unlock(&softc->ctl_lock); 4742 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4743 (uintmax_t)lun->lun); 4744 return (1); 4745 } 4746#if 0 4747 if ((softc->aps_locked_lun != 0) 4748 && (softc->aps_locked_lun != lun->lun)) { 4749 printf("%s: attempt to lock LUN %llu when %llu is already " 4750 "locked\n"); 4751 mtx_unlock(&lun->lun_lock); 4752 mtx_unlock(&softc->ctl_lock); 4753 return (1); 4754 } 4755#endif 4756 4757 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4758 (page_index->page_len * CTL_PAGE_CURRENT)); 4759 4760 if (lock != 0) { 4761 current_sp->lock_active = APS_LOCK_ACTIVE; 4762 softc->aps_locked_lun = lun->lun; 4763 } else { 4764 current_sp->lock_active = 0; 4765 softc->aps_locked_lun = 0; 4766 } 4767 4768 4769 /* 4770 * If we're in HA mode, try to send the lock message to the other 4771 * side. 4772 */ 4773 if (ctl_is_single == 0) { 4774 int isc_retval; 4775 union ctl_ha_msg lock_msg; 4776 4777 lock_msg.hdr.nexus = *nexus; 4778 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4779 if (lock != 0) 4780 lock_msg.aps.lock_flag = 1; 4781 else 4782 lock_msg.aps.lock_flag = 0; 4783 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4784 sizeof(lock_msg), 0); 4785 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4786 printf("%s: APS (lock=%d) error returned from " 4787 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4788 mtx_unlock(&lun->lun_lock); 4789 mtx_unlock(&softc->ctl_lock); 4790 return (1); 4791 } 4792 } 4793 4794 mtx_unlock(&lun->lun_lock); 4795 mtx_unlock(&softc->ctl_lock); 4796 4797 return (0); 4798} 4799 4800void 4801ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4802{ 4803 struct ctl_lun *lun; 4804 struct ctl_softc *softc; 4805 int i; 4806 4807 softc = control_softc; 4808 4809 lun = (struct ctl_lun *)be_lun->ctl_lun; 4810 4811 mtx_lock(&lun->lun_lock); 4812 4813 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4814 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4815 4816 mtx_unlock(&lun->lun_lock); 4817} 4818 4819/* 4820 * Backend "memory move is complete" callback for requests that never 4821 * make it down to say RAIDCore's configuration code. 4822 */ 4823int 4824ctl_config_move_done(union ctl_io *io) 4825{ 4826 int retval; 4827 4828 retval = CTL_RETVAL_COMPLETE; 4829 4830 4831 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4832 /* 4833 * XXX KDM this shouldn't happen, but what if it does? 4834 */ 4835 if (io->io_hdr.io_type != CTL_IO_SCSI) 4836 panic("I/O type isn't CTL_IO_SCSI!"); 4837 4838 if ((io->io_hdr.port_status == 0) 4839 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4840 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4841 io->io_hdr.status = CTL_SUCCESS; 4842 else if ((io->io_hdr.port_status != 0) 4843 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4844 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4845 /* 4846 * For hardware error sense keys, the sense key 4847 * specific value is defined to be a retry count, 4848 * but we use it to pass back an internal FETD 4849 * error code. XXX KDM Hopefully the FETD is only 4850 * using 16 bits for an error code, since that's 4851 * all the space we have in the sks field. 4852 */ 4853 ctl_set_internal_failure(&io->scsiio, 4854 /*sks_valid*/ 1, 4855 /*retry_count*/ 4856 io->io_hdr.port_status); 4857 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 4858 free(io->scsiio.kern_data_ptr, M_CTL); 4859 ctl_done(io); 4860 goto bailout; 4861 } 4862 4863 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4864 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4865 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4866 /* 4867 * XXX KDM just assuming a single pointer here, and not a 4868 * S/G list. If we start using S/G lists for config data, 4869 * we'll need to know how to clean them up here as well. 4870 */ 4871 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 4872 free(io->scsiio.kern_data_ptr, M_CTL); 4873 /* Hopefully the user has already set the status... */ 4874 ctl_done(io); 4875 } else { 4876 /* 4877 * XXX KDM now we need to continue data movement. Some 4878 * options: 4879 * - call ctl_scsiio() again? We don't do this for data 4880 * writes, because for those at least we know ahead of 4881 * time where the write will go and how long it is. For 4882 * config writes, though, that information is largely 4883 * contained within the write itself, thus we need to 4884 * parse out the data again. 4885 * 4886 * - Call some other function once the data is in? 4887 */ 4888 4889 /* 4890 * XXX KDM call ctl_scsiio() again for now, and check flag 4891 * bits to see whether we're allocated or not. 4892 */ 4893 retval = ctl_scsiio(&io->scsiio); 4894 } 4895bailout: 4896 return (retval); 4897} 4898 4899/* 4900 * This gets called by a backend driver when it is done with a 4901 * data_submit method. 4902 */ 4903void 4904ctl_data_submit_done(union ctl_io *io) 4905{ 4906 /* 4907 * If the IO_CONT flag is set, we need to call the supplied 4908 * function to continue processing the I/O, instead of completing 4909 * the I/O just yet. 4910 * 4911 * If there is an error, though, we don't want to keep processing. 4912 * Instead, just send status back to the initiator. 4913 */ 4914 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) && 4915 (io->io_hdr.flags & CTL_FLAG_ABORT) == 0 && 4916 ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 4917 (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 4918 io->scsiio.io_cont(io); 4919 return; 4920 } 4921 ctl_done(io); 4922} 4923 4924/* 4925 * This gets called by a backend driver when it is done with a 4926 * configuration write. 4927 */ 4928void 4929ctl_config_write_done(union ctl_io *io) 4930{ 4931 /* 4932 * If the IO_CONT flag is set, we need to call the supplied 4933 * function to continue processing the I/O, instead of completing 4934 * the I/O just yet. 4935 * 4936 * If there is an error, though, we don't want to keep processing. 4937 * Instead, just send status back to the initiator. 4938 */ 4939 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 4940 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 4941 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 4942 io->scsiio.io_cont(io); 4943 return; 4944 } 4945 /* 4946 * Since a configuration write can be done for commands that actually 4947 * have data allocated, like write buffer, and commands that have 4948 * no data, like start/stop unit, we need to check here. 4949 */ 4950 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 4951 free(io->scsiio.kern_data_ptr, M_CTL); 4952 ctl_done(io); 4953} 4954 4955/* 4956 * SCSI release command. 4957 */ 4958int 4959ctl_scsi_release(struct ctl_scsiio *ctsio) 4960{ 4961 int length, longid, thirdparty_id, resv_id; 4962 struct ctl_softc *ctl_softc; 4963 struct ctl_lun *lun; 4964 4965 length = 0; 4966 resv_id = 0; 4967 4968 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 4969 4970 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 4971 ctl_softc = control_softc; 4972 4973 switch (ctsio->cdb[0]) { 4974 case RELEASE: { 4975 struct scsi_release *cdb; 4976 4977 cdb = (struct scsi_release *)ctsio->cdb; 4978 if ((cdb->byte2 & 0x1f) != 0) { 4979 ctl_set_invalid_field(ctsio, 4980 /*sks_valid*/ 1, 4981 /*command*/ 1, 4982 /*field*/ 1, 4983 /*bit_valid*/ 0, 4984 /*bit*/ 0); 4985 ctl_done((union ctl_io *)ctsio); 4986 return (CTL_RETVAL_COMPLETE); 4987 } 4988 break; 4989 } 4990 case RELEASE_10: { 4991 struct scsi_release_10 *cdb; 4992 4993 cdb = (struct scsi_release_10 *)ctsio->cdb; 4994 4995 if ((cdb->byte2 & SR10_EXTENT) != 0) { 4996 ctl_set_invalid_field(ctsio, 4997 /*sks_valid*/ 1, 4998 /*command*/ 1, 4999 /*field*/ 1, 5000 /*bit_valid*/ 1, 5001 /*bit*/ 0); 5002 ctl_done((union ctl_io *)ctsio); 5003 return (CTL_RETVAL_COMPLETE); 5004 5005 } 5006 5007 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5008 ctl_set_invalid_field(ctsio, 5009 /*sks_valid*/ 1, 5010 /*command*/ 1, 5011 /*field*/ 1, 5012 /*bit_valid*/ 1, 5013 /*bit*/ 4); 5014 ctl_done((union ctl_io *)ctsio); 5015 return (CTL_RETVAL_COMPLETE); 5016 } 5017 5018 if (cdb->byte2 & SR10_LONGID) 5019 longid = 1; 5020 else 5021 thirdparty_id = cdb->thirdparty_id; 5022 5023 resv_id = cdb->resv_id; 5024 length = scsi_2btoul(cdb->length); 5025 break; 5026 } 5027 } 5028 5029 5030 /* 5031 * XXX KDM right now, we only support LUN reservation. We don't 5032 * support 3rd party reservations, or extent reservations, which 5033 * might actually need the parameter list. If we've gotten this 5034 * far, we've got a LUN reservation. Anything else got kicked out 5035 * above. So, according to SPC, ignore the length. 5036 */ 5037 length = 0; 5038 5039 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5040 && (length > 0)) { 5041 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5042 ctsio->kern_data_len = length; 5043 ctsio->kern_total_len = length; 5044 ctsio->kern_data_resid = 0; 5045 ctsio->kern_rel_offset = 0; 5046 ctsio->kern_sg_entries = 0; 5047 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5048 ctsio->be_move_done = ctl_config_move_done; 5049 ctl_datamove((union ctl_io *)ctsio); 5050 5051 return (CTL_RETVAL_COMPLETE); 5052 } 5053 5054 if (length > 0) 5055 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5056 5057 mtx_lock(&lun->lun_lock); 5058 5059 /* 5060 * According to SPC, it is not an error for an intiator to attempt 5061 * to release a reservation on a LUN that isn't reserved, or that 5062 * is reserved by another initiator. The reservation can only be 5063 * released, though, by the initiator who made it or by one of 5064 * several reset type events. 5065 */ 5066 if (lun->flags & CTL_LUN_RESERVED) { 5067 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5068 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5069 && (ctsio->io_hdr.nexus.targ_target.id == 5070 lun->rsv_nexus.targ_target.id)) { 5071 lun->flags &= ~CTL_LUN_RESERVED; 5072 } 5073 } 5074 5075 mtx_unlock(&lun->lun_lock); 5076 5077 ctsio->scsi_status = SCSI_STATUS_OK; 5078 ctsio->io_hdr.status = CTL_SUCCESS; 5079 5080 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5081 free(ctsio->kern_data_ptr, M_CTL); 5082 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5083 } 5084 5085 ctl_done((union ctl_io *)ctsio); 5086 return (CTL_RETVAL_COMPLETE); 5087} 5088 5089int 5090ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5091{ 5092 int extent, thirdparty, longid; 5093 int resv_id, length; 5094 uint64_t thirdparty_id; 5095 struct ctl_softc *ctl_softc; 5096 struct ctl_lun *lun; 5097 5098 extent = 0; 5099 thirdparty = 0; 5100 longid = 0; 5101 resv_id = 0; 5102 length = 0; 5103 thirdparty_id = 0; 5104 5105 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5106 5107 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5108 ctl_softc = control_softc; 5109 5110 switch (ctsio->cdb[0]) { 5111 case RESERVE: { 5112 struct scsi_reserve *cdb; 5113 5114 cdb = (struct scsi_reserve *)ctsio->cdb; 5115 if ((cdb->byte2 & 0x1f) != 0) { 5116 ctl_set_invalid_field(ctsio, 5117 /*sks_valid*/ 1, 5118 /*command*/ 1, 5119 /*field*/ 1, 5120 /*bit_valid*/ 0, 5121 /*bit*/ 0); 5122 ctl_done((union ctl_io *)ctsio); 5123 return (CTL_RETVAL_COMPLETE); 5124 } 5125 resv_id = cdb->resv_id; 5126 length = scsi_2btoul(cdb->length); 5127 break; 5128 } 5129 case RESERVE_10: { 5130 struct scsi_reserve_10 *cdb; 5131 5132 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5133 5134 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5135 ctl_set_invalid_field(ctsio, 5136 /*sks_valid*/ 1, 5137 /*command*/ 1, 5138 /*field*/ 1, 5139 /*bit_valid*/ 1, 5140 /*bit*/ 0); 5141 ctl_done((union ctl_io *)ctsio); 5142 return (CTL_RETVAL_COMPLETE); 5143 } 5144 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5145 ctl_set_invalid_field(ctsio, 5146 /*sks_valid*/ 1, 5147 /*command*/ 1, 5148 /*field*/ 1, 5149 /*bit_valid*/ 1, 5150 /*bit*/ 4); 5151 ctl_done((union ctl_io *)ctsio); 5152 return (CTL_RETVAL_COMPLETE); 5153 } 5154 if (cdb->byte2 & SR10_LONGID) 5155 longid = 1; 5156 else 5157 thirdparty_id = cdb->thirdparty_id; 5158 5159 resv_id = cdb->resv_id; 5160 length = scsi_2btoul(cdb->length); 5161 break; 5162 } 5163 } 5164 5165 /* 5166 * XXX KDM right now, we only support LUN reservation. We don't 5167 * support 3rd party reservations, or extent reservations, which 5168 * might actually need the parameter list. If we've gotten this 5169 * far, we've got a LUN reservation. Anything else got kicked out 5170 * above. So, according to SPC, ignore the length. 5171 */ 5172 length = 0; 5173 5174 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5175 && (length > 0)) { 5176 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5177 ctsio->kern_data_len = length; 5178 ctsio->kern_total_len = length; 5179 ctsio->kern_data_resid = 0; 5180 ctsio->kern_rel_offset = 0; 5181 ctsio->kern_sg_entries = 0; 5182 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5183 ctsio->be_move_done = ctl_config_move_done; 5184 ctl_datamove((union ctl_io *)ctsio); 5185 5186 return (CTL_RETVAL_COMPLETE); 5187 } 5188 5189 if (length > 0) 5190 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5191 5192 mtx_lock(&lun->lun_lock); 5193 if (lun->flags & CTL_LUN_RESERVED) { 5194 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5195 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5196 || (ctsio->io_hdr.nexus.targ_target.id != 5197 lun->rsv_nexus.targ_target.id)) { 5198 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5199 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5200 goto bailout; 5201 } 5202 } 5203 5204 lun->flags |= CTL_LUN_RESERVED; 5205 lun->rsv_nexus = ctsio->io_hdr.nexus; 5206 5207 ctsio->scsi_status = SCSI_STATUS_OK; 5208 ctsio->io_hdr.status = CTL_SUCCESS; 5209 5210bailout: 5211 mtx_unlock(&lun->lun_lock); 5212 5213 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5214 free(ctsio->kern_data_ptr, M_CTL); 5215 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5216 } 5217 5218 ctl_done((union ctl_io *)ctsio); 5219 return (CTL_RETVAL_COMPLETE); 5220} 5221 5222int 5223ctl_start_stop(struct ctl_scsiio *ctsio) 5224{ 5225 struct scsi_start_stop_unit *cdb; 5226 struct ctl_lun *lun; 5227 struct ctl_softc *ctl_softc; 5228 int retval; 5229 5230 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5231 5232 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5233 ctl_softc = control_softc; 5234 retval = 0; 5235 5236 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5237 5238 /* 5239 * XXX KDM 5240 * We don't support the immediate bit on a stop unit. In order to 5241 * do that, we would need to code up a way to know that a stop is 5242 * pending, and hold off any new commands until it completes, one 5243 * way or another. Then we could accept or reject those commands 5244 * depending on its status. We would almost need to do the reverse 5245 * of what we do below for an immediate start -- return the copy of 5246 * the ctl_io to the FETD with status to send to the host (and to 5247 * free the copy!) and then free the original I/O once the stop 5248 * actually completes. That way, the OOA queue mechanism can work 5249 * to block commands that shouldn't proceed. Another alternative 5250 * would be to put the copy in the queue in place of the original, 5251 * and return the original back to the caller. That could be 5252 * slightly safer.. 5253 */ 5254 if ((cdb->byte2 & SSS_IMMED) 5255 && ((cdb->how & SSS_START) == 0)) { 5256 ctl_set_invalid_field(ctsio, 5257 /*sks_valid*/ 1, 5258 /*command*/ 1, 5259 /*field*/ 1, 5260 /*bit_valid*/ 1, 5261 /*bit*/ 0); 5262 ctl_done((union ctl_io *)ctsio); 5263 return (CTL_RETVAL_COMPLETE); 5264 } 5265 5266 /* 5267 * We don't support the power conditions field. We need to check 5268 * this prior to checking the load/eject and start/stop bits. 5269 */ 5270 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5271 ctl_set_invalid_field(ctsio, 5272 /*sks_valid*/ 1, 5273 /*command*/ 1, 5274 /*field*/ 4, 5275 /*bit_valid*/ 1, 5276 /*bit*/ 4); 5277 ctl_done((union ctl_io *)ctsio); 5278 return (CTL_RETVAL_COMPLETE); 5279 } 5280 5281 /* 5282 * Media isn't removable, so we can't load or eject it. 5283 */ 5284 if ((cdb->how & SSS_LOEJ) != 0) { 5285 ctl_set_invalid_field(ctsio, 5286 /*sks_valid*/ 1, 5287 /*command*/ 1, 5288 /*field*/ 4, 5289 /*bit_valid*/ 1, 5290 /*bit*/ 1); 5291 ctl_done((union ctl_io *)ctsio); 5292 return (CTL_RETVAL_COMPLETE); 5293 } 5294 5295 if ((lun->flags & CTL_LUN_PR_RESERVED) 5296 && ((cdb->how & SSS_START)==0)) { 5297 uint32_t residx; 5298 5299 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5300 if (!lun->per_res[residx].registered 5301 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5302 5303 ctl_set_reservation_conflict(ctsio); 5304 ctl_done((union ctl_io *)ctsio); 5305 return (CTL_RETVAL_COMPLETE); 5306 } 5307 } 5308 5309 /* 5310 * If there is no backend on this device, we can't start or stop 5311 * it. In theory we shouldn't get any start/stop commands in the 5312 * first place at this level if the LUN doesn't have a backend. 5313 * That should get stopped by the command decode code. 5314 */ 5315 if (lun->backend == NULL) { 5316 ctl_set_invalid_opcode(ctsio); 5317 ctl_done((union ctl_io *)ctsio); 5318 return (CTL_RETVAL_COMPLETE); 5319 } 5320 5321 /* 5322 * XXX KDM Copan-specific offline behavior. 5323 * Figure out a reasonable way to port this? 5324 */ 5325#ifdef NEEDTOPORT 5326 mtx_lock(&lun->lun_lock); 5327 5328 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5329 && (lun->flags & CTL_LUN_OFFLINE)) { 5330 /* 5331 * If the LUN is offline, and the on/offline bit isn't set, 5332 * reject the start or stop. Otherwise, let it through. 5333 */ 5334 mtx_unlock(&lun->lun_lock); 5335 ctl_set_lun_not_ready(ctsio); 5336 ctl_done((union ctl_io *)ctsio); 5337 } else { 5338 mtx_unlock(&lun->lun_lock); 5339#endif /* NEEDTOPORT */ 5340 /* 5341 * This could be a start or a stop when we're online, 5342 * or a stop/offline or start/online. A start or stop when 5343 * we're offline is covered in the case above. 5344 */ 5345 /* 5346 * In the non-immediate case, we send the request to 5347 * the backend and return status to the user when 5348 * it is done. 5349 * 5350 * In the immediate case, we allocate a new ctl_io 5351 * to hold a copy of the request, and send that to 5352 * the backend. We then set good status on the 5353 * user's request and return it immediately. 5354 */ 5355 if (cdb->byte2 & SSS_IMMED) { 5356 union ctl_io *new_io; 5357 5358 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5359 if (new_io == NULL) { 5360 ctl_set_busy(ctsio); 5361 ctl_done((union ctl_io *)ctsio); 5362 } else { 5363 ctl_copy_io((union ctl_io *)ctsio, 5364 new_io); 5365 retval = lun->backend->config_write(new_io); 5366 ctl_set_success(ctsio); 5367 ctl_done((union ctl_io *)ctsio); 5368 } 5369 } else { 5370 retval = lun->backend->config_write( 5371 (union ctl_io *)ctsio); 5372 } 5373#ifdef NEEDTOPORT 5374 } 5375#endif 5376 return (retval); 5377} 5378 5379/* 5380 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5381 * we don't really do anything with the LBA and length fields if the user 5382 * passes them in. Instead we'll just flush out the cache for the entire 5383 * LUN. 5384 */ 5385int 5386ctl_sync_cache(struct ctl_scsiio *ctsio) 5387{ 5388 struct ctl_lun *lun; 5389 struct ctl_softc *ctl_softc; 5390 uint64_t starting_lba; 5391 uint32_t block_count; 5392 int reladr, immed; 5393 int retval; 5394 5395 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5396 5397 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5398 ctl_softc = control_softc; 5399 retval = 0; 5400 reladr = 0; 5401 immed = 0; 5402 5403 switch (ctsio->cdb[0]) { 5404 case SYNCHRONIZE_CACHE: { 5405 struct scsi_sync_cache *cdb; 5406 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5407 5408 if (cdb->byte2 & SSC_RELADR) 5409 reladr = 1; 5410 5411 if (cdb->byte2 & SSC_IMMED) 5412 immed = 1; 5413 5414 starting_lba = scsi_4btoul(cdb->begin_lba); 5415 block_count = scsi_2btoul(cdb->lb_count); 5416 break; 5417 } 5418 case SYNCHRONIZE_CACHE_16: { 5419 struct scsi_sync_cache_16 *cdb; 5420 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5421 5422 if (cdb->byte2 & SSC_RELADR) 5423 reladr = 1; 5424 5425 if (cdb->byte2 & SSC_IMMED) 5426 immed = 1; 5427 5428 starting_lba = scsi_8btou64(cdb->begin_lba); 5429 block_count = scsi_4btoul(cdb->lb_count); 5430 break; 5431 } 5432 default: 5433 ctl_set_invalid_opcode(ctsio); 5434 ctl_done((union ctl_io *)ctsio); 5435 goto bailout; 5436 break; /* NOTREACHED */ 5437 } 5438 5439 if (immed) { 5440 /* 5441 * We don't support the immediate bit. Since it's in the 5442 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5443 * commands, we can just return the same error in either 5444 * case. 5445 */ 5446 ctl_set_invalid_field(ctsio, 5447 /*sks_valid*/ 1, 5448 /*command*/ 1, 5449 /*field*/ 1, 5450 /*bit_valid*/ 1, 5451 /*bit*/ 1); 5452 ctl_done((union ctl_io *)ctsio); 5453 goto bailout; 5454 } 5455 5456 if (reladr) { 5457 /* 5458 * We don't support the reladr bit either. It can only be 5459 * used with linked commands, and we don't support linked 5460 * commands. Since the bit is in the same place for the 5461 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5462 * just return the same error in either case. 5463 */ 5464 ctl_set_invalid_field(ctsio, 5465 /*sks_valid*/ 1, 5466 /*command*/ 1, 5467 /*field*/ 1, 5468 /*bit_valid*/ 1, 5469 /*bit*/ 0); 5470 ctl_done((union ctl_io *)ctsio); 5471 goto bailout; 5472 } 5473 5474 /* 5475 * We check the LBA and length, but don't do anything with them. 5476 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5477 * get flushed. This check will just help satisfy anyone who wants 5478 * to see an error for an out of range LBA. 5479 */ 5480 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5481 ctl_set_lba_out_of_range(ctsio); 5482 ctl_done((union ctl_io *)ctsio); 5483 goto bailout; 5484 } 5485 5486 /* 5487 * If this LUN has no backend, we can't flush the cache anyway. 5488 */ 5489 if (lun->backend == NULL) { 5490 ctl_set_invalid_opcode(ctsio); 5491 ctl_done((union ctl_io *)ctsio); 5492 goto bailout; 5493 } 5494 5495 /* 5496 * Check to see whether we're configured to send the SYNCHRONIZE 5497 * CACHE command directly to the back end. 5498 */ 5499 mtx_lock(&lun->lun_lock); 5500 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5501 && (++(lun->sync_count) >= lun->sync_interval)) { 5502 lun->sync_count = 0; 5503 mtx_unlock(&lun->lun_lock); 5504 retval = lun->backend->config_write((union ctl_io *)ctsio); 5505 } else { 5506 mtx_unlock(&lun->lun_lock); 5507 ctl_set_success(ctsio); 5508 ctl_done((union ctl_io *)ctsio); 5509 } 5510 5511bailout: 5512 5513 return (retval); 5514} 5515 5516int 5517ctl_format(struct ctl_scsiio *ctsio) 5518{ 5519 struct scsi_format *cdb; 5520 struct ctl_lun *lun; 5521 struct ctl_softc *ctl_softc; 5522 int length, defect_list_len; 5523 5524 CTL_DEBUG_PRINT(("ctl_format\n")); 5525 5526 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5527 ctl_softc = control_softc; 5528 5529 cdb = (struct scsi_format *)ctsio->cdb; 5530 5531 length = 0; 5532 if (cdb->byte2 & SF_FMTDATA) { 5533 if (cdb->byte2 & SF_LONGLIST) 5534 length = sizeof(struct scsi_format_header_long); 5535 else 5536 length = sizeof(struct scsi_format_header_short); 5537 } 5538 5539 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5540 && (length > 0)) { 5541 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5542 ctsio->kern_data_len = length; 5543 ctsio->kern_total_len = length; 5544 ctsio->kern_data_resid = 0; 5545 ctsio->kern_rel_offset = 0; 5546 ctsio->kern_sg_entries = 0; 5547 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5548 ctsio->be_move_done = ctl_config_move_done; 5549 ctl_datamove((union ctl_io *)ctsio); 5550 5551 return (CTL_RETVAL_COMPLETE); 5552 } 5553 5554 defect_list_len = 0; 5555 5556 if (cdb->byte2 & SF_FMTDATA) { 5557 if (cdb->byte2 & SF_LONGLIST) { 5558 struct scsi_format_header_long *header; 5559 5560 header = (struct scsi_format_header_long *) 5561 ctsio->kern_data_ptr; 5562 5563 defect_list_len = scsi_4btoul(header->defect_list_len); 5564 if (defect_list_len != 0) { 5565 ctl_set_invalid_field(ctsio, 5566 /*sks_valid*/ 1, 5567 /*command*/ 0, 5568 /*field*/ 2, 5569 /*bit_valid*/ 0, 5570 /*bit*/ 0); 5571 goto bailout; 5572 } 5573 } else { 5574 struct scsi_format_header_short *header; 5575 5576 header = (struct scsi_format_header_short *) 5577 ctsio->kern_data_ptr; 5578 5579 defect_list_len = scsi_2btoul(header->defect_list_len); 5580 if (defect_list_len != 0) { 5581 ctl_set_invalid_field(ctsio, 5582 /*sks_valid*/ 1, 5583 /*command*/ 0, 5584 /*field*/ 2, 5585 /*bit_valid*/ 0, 5586 /*bit*/ 0); 5587 goto bailout; 5588 } 5589 } 5590 } 5591 5592 /* 5593 * The format command will clear out the "Medium format corrupted" 5594 * status if set by the configuration code. That status is really 5595 * just a way to notify the host that we have lost the media, and 5596 * get them to issue a command that will basically make them think 5597 * they're blowing away the media. 5598 */ 5599 mtx_lock(&lun->lun_lock); 5600 lun->flags &= ~CTL_LUN_INOPERABLE; 5601 mtx_unlock(&lun->lun_lock); 5602 5603 ctsio->scsi_status = SCSI_STATUS_OK; 5604 ctsio->io_hdr.status = CTL_SUCCESS; 5605bailout: 5606 5607 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5608 free(ctsio->kern_data_ptr, M_CTL); 5609 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5610 } 5611 5612 ctl_done((union ctl_io *)ctsio); 5613 return (CTL_RETVAL_COMPLETE); 5614} 5615 5616int 5617ctl_read_buffer(struct ctl_scsiio *ctsio) 5618{ 5619 struct scsi_read_buffer *cdb; 5620 struct ctl_lun *lun; 5621 int buffer_offset, len; 5622 static uint8_t descr[4]; 5623 static uint8_t echo_descr[4] = { 0 }; 5624 5625 CTL_DEBUG_PRINT(("ctl_read_buffer\n")); 5626 5627 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5628 cdb = (struct scsi_read_buffer *)ctsio->cdb; 5629 5630 if (lun->flags & CTL_LUN_PR_RESERVED) { 5631 uint32_t residx; 5632 5633 /* 5634 * XXX KDM need a lock here. 5635 */ 5636 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5637 if ((lun->res_type == SPR_TYPE_EX_AC 5638 && residx != lun->pr_res_idx) 5639 || ((lun->res_type == SPR_TYPE_EX_AC_RO 5640 || lun->res_type == SPR_TYPE_EX_AC_AR) 5641 && !lun->per_res[residx].registered)) { 5642 ctl_set_reservation_conflict(ctsio); 5643 ctl_done((union ctl_io *)ctsio); 5644 return (CTL_RETVAL_COMPLETE); 5645 } 5646 } 5647 5648 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA && 5649 (cdb->byte2 & RWB_MODE) != RWB_MODE_ECHO_DESCR && 5650 (cdb->byte2 & RWB_MODE) != RWB_MODE_DESCR) { 5651 ctl_set_invalid_field(ctsio, 5652 /*sks_valid*/ 1, 5653 /*command*/ 1, 5654 /*field*/ 1, 5655 /*bit_valid*/ 1, 5656 /*bit*/ 4); 5657 ctl_done((union ctl_io *)ctsio); 5658 return (CTL_RETVAL_COMPLETE); 5659 } 5660 if (cdb->buffer_id != 0) { 5661 ctl_set_invalid_field(ctsio, 5662 /*sks_valid*/ 1, 5663 /*command*/ 1, 5664 /*field*/ 2, 5665 /*bit_valid*/ 0, 5666 /*bit*/ 0); 5667 ctl_done((union ctl_io *)ctsio); 5668 return (CTL_RETVAL_COMPLETE); 5669 } 5670 5671 len = scsi_3btoul(cdb->length); 5672 buffer_offset = scsi_3btoul(cdb->offset); 5673 5674 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5675 ctl_set_invalid_field(ctsio, 5676 /*sks_valid*/ 1, 5677 /*command*/ 1, 5678 /*field*/ 6, 5679 /*bit_valid*/ 0, 5680 /*bit*/ 0); 5681 ctl_done((union ctl_io *)ctsio); 5682 return (CTL_RETVAL_COMPLETE); 5683 } 5684 5685 if ((cdb->byte2 & RWB_MODE) == RWB_MODE_DESCR) { 5686 descr[0] = 0; 5687 scsi_ulto3b(sizeof(lun->write_buffer), &descr[1]); 5688 ctsio->kern_data_ptr = descr; 5689 len = min(len, sizeof(descr)); 5690 } else if ((cdb->byte2 & RWB_MODE) == RWB_MODE_ECHO_DESCR) { 5691 ctsio->kern_data_ptr = echo_descr; 5692 len = min(len, sizeof(echo_descr)); 5693 } else 5694 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5695 ctsio->kern_data_len = len; 5696 ctsio->kern_total_len = len; 5697 ctsio->kern_data_resid = 0; 5698 ctsio->kern_rel_offset = 0; 5699 ctsio->kern_sg_entries = 0; 5700 ctsio->be_move_done = ctl_config_move_done; 5701 ctl_datamove((union ctl_io *)ctsio); 5702 5703 return (CTL_RETVAL_COMPLETE); 5704} 5705 5706int 5707ctl_write_buffer(struct ctl_scsiio *ctsio) 5708{ 5709 struct scsi_write_buffer *cdb; 5710 struct ctl_lun *lun; 5711 int buffer_offset, len; 5712 5713 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5714 5715 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5716 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5717 5718 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5719 ctl_set_invalid_field(ctsio, 5720 /*sks_valid*/ 1, 5721 /*command*/ 1, 5722 /*field*/ 1, 5723 /*bit_valid*/ 1, 5724 /*bit*/ 4); 5725 ctl_done((union ctl_io *)ctsio); 5726 return (CTL_RETVAL_COMPLETE); 5727 } 5728 if (cdb->buffer_id != 0) { 5729 ctl_set_invalid_field(ctsio, 5730 /*sks_valid*/ 1, 5731 /*command*/ 1, 5732 /*field*/ 2, 5733 /*bit_valid*/ 0, 5734 /*bit*/ 0); 5735 ctl_done((union ctl_io *)ctsio); 5736 return (CTL_RETVAL_COMPLETE); 5737 } 5738 5739 len = scsi_3btoul(cdb->length); 5740 buffer_offset = scsi_3btoul(cdb->offset); 5741 5742 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5743 ctl_set_invalid_field(ctsio, 5744 /*sks_valid*/ 1, 5745 /*command*/ 1, 5746 /*field*/ 6, 5747 /*bit_valid*/ 0, 5748 /*bit*/ 0); 5749 ctl_done((union ctl_io *)ctsio); 5750 return (CTL_RETVAL_COMPLETE); 5751 } 5752 5753 /* 5754 * If we've got a kernel request that hasn't been malloced yet, 5755 * malloc it and tell the caller the data buffer is here. 5756 */ 5757 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5758 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5759 ctsio->kern_data_len = len; 5760 ctsio->kern_total_len = len; 5761 ctsio->kern_data_resid = 0; 5762 ctsio->kern_rel_offset = 0; 5763 ctsio->kern_sg_entries = 0; 5764 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5765 ctsio->be_move_done = ctl_config_move_done; 5766 ctl_datamove((union ctl_io *)ctsio); 5767 5768 return (CTL_RETVAL_COMPLETE); 5769 } 5770 5771 ctl_done((union ctl_io *)ctsio); 5772 5773 return (CTL_RETVAL_COMPLETE); 5774} 5775 5776int 5777ctl_write_same(struct ctl_scsiio *ctsio) 5778{ 5779 struct ctl_lun *lun; 5780 struct ctl_lba_len_flags *lbalen; 5781 uint64_t lba; 5782 uint32_t num_blocks; 5783 int len, retval; 5784 uint8_t byte2; 5785 5786 retval = CTL_RETVAL_COMPLETE; 5787 5788 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5789 5790 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5791 5792 switch (ctsio->cdb[0]) { 5793 case WRITE_SAME_10: { 5794 struct scsi_write_same_10 *cdb; 5795 5796 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5797 5798 lba = scsi_4btoul(cdb->addr); 5799 num_blocks = scsi_2btoul(cdb->length); 5800 byte2 = cdb->byte2; 5801 break; 5802 } 5803 case WRITE_SAME_16: { 5804 struct scsi_write_same_16 *cdb; 5805 5806 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5807 5808 lba = scsi_8btou64(cdb->addr); 5809 num_blocks = scsi_4btoul(cdb->length); 5810 byte2 = cdb->byte2; 5811 break; 5812 } 5813 default: 5814 /* 5815 * We got a command we don't support. This shouldn't 5816 * happen, commands should be filtered out above us. 5817 */ 5818 ctl_set_invalid_opcode(ctsio); 5819 ctl_done((union ctl_io *)ctsio); 5820 5821 return (CTL_RETVAL_COMPLETE); 5822 break; /* NOTREACHED */ 5823 } 5824 5825 /* 5826 * The first check is to make sure we're in bounds, the second 5827 * check is to catch wrap-around problems. If the lba + num blocks 5828 * is less than the lba, then we've wrapped around and the block 5829 * range is invalid anyway. 5830 */ 5831 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5832 || ((lba + num_blocks) < lba)) { 5833 ctl_set_lba_out_of_range(ctsio); 5834 ctl_done((union ctl_io *)ctsio); 5835 return (CTL_RETVAL_COMPLETE); 5836 } 5837 5838 /* Zero number of blocks means "to the last logical block" */ 5839 if (num_blocks == 0) { 5840 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5841 ctl_set_invalid_field(ctsio, 5842 /*sks_valid*/ 0, 5843 /*command*/ 1, 5844 /*field*/ 0, 5845 /*bit_valid*/ 0, 5846 /*bit*/ 0); 5847 ctl_done((union ctl_io *)ctsio); 5848 return (CTL_RETVAL_COMPLETE); 5849 } 5850 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5851 } 5852 5853 len = lun->be_lun->blocksize; 5854 5855 /* 5856 * If we've got a kernel request that hasn't been malloced yet, 5857 * malloc it and tell the caller the data buffer is here. 5858 */ 5859 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5860 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5861 ctsio->kern_data_len = len; 5862 ctsio->kern_total_len = len; 5863 ctsio->kern_data_resid = 0; 5864 ctsio->kern_rel_offset = 0; 5865 ctsio->kern_sg_entries = 0; 5866 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5867 ctsio->be_move_done = ctl_config_move_done; 5868 ctl_datamove((union ctl_io *)ctsio); 5869 5870 return (CTL_RETVAL_COMPLETE); 5871 } 5872 5873 lbalen = (struct ctl_lba_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5874 lbalen->lba = lba; 5875 lbalen->len = num_blocks; 5876 lbalen->flags = byte2; 5877 retval = lun->backend->config_write((union ctl_io *)ctsio); 5878 5879 return (retval); 5880} 5881 5882int 5883ctl_unmap(struct ctl_scsiio *ctsio) 5884{ 5885 struct ctl_lun *lun; 5886 struct scsi_unmap *cdb; 5887 struct ctl_ptr_len_flags *ptrlen; 5888 struct scsi_unmap_header *hdr; 5889 struct scsi_unmap_desc *buf, *end; 5890 uint64_t lba; 5891 uint32_t num_blocks; 5892 int len, retval; 5893 uint8_t byte2; 5894 5895 retval = CTL_RETVAL_COMPLETE; 5896 5897 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5898 5899 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5900 cdb = (struct scsi_unmap *)ctsio->cdb; 5901 5902 len = scsi_2btoul(cdb->length); 5903 byte2 = cdb->byte2; 5904 5905 /* 5906 * If we've got a kernel request that hasn't been malloced yet, 5907 * malloc it and tell the caller the data buffer is here. 5908 */ 5909 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5910 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5911 ctsio->kern_data_len = len; 5912 ctsio->kern_total_len = len; 5913 ctsio->kern_data_resid = 0; 5914 ctsio->kern_rel_offset = 0; 5915 ctsio->kern_sg_entries = 0; 5916 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5917 ctsio->be_move_done = ctl_config_move_done; 5918 ctl_datamove((union ctl_io *)ctsio); 5919 5920 return (CTL_RETVAL_COMPLETE); 5921 } 5922 5923 len = ctsio->kern_total_len - ctsio->kern_data_resid; 5924 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 5925 if (len < sizeof (*hdr) || 5926 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 5927 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 5928 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 5929 ctl_set_invalid_field(ctsio, 5930 /*sks_valid*/ 0, 5931 /*command*/ 0, 5932 /*field*/ 0, 5933 /*bit_valid*/ 0, 5934 /*bit*/ 0); 5935 ctl_done((union ctl_io *)ctsio); 5936 return (CTL_RETVAL_COMPLETE); 5937 } 5938 len = scsi_2btoul(hdr->desc_length); 5939 buf = (struct scsi_unmap_desc *)(hdr + 1); 5940 end = buf + len / sizeof(*buf); 5941 5942 ptrlen = (struct ctl_ptr_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5943 ptrlen->ptr = (void *)buf; 5944 ptrlen->len = len; 5945 ptrlen->flags = byte2; 5946 5947 for (; buf < end; buf++) { 5948 lba = scsi_8btou64(buf->lba); 5949 num_blocks = scsi_4btoul(buf->length); 5950 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5951 || ((lba + num_blocks) < lba)) { 5952 ctl_set_lba_out_of_range(ctsio); 5953 ctl_done((union ctl_io *)ctsio); 5954 return (CTL_RETVAL_COMPLETE); 5955 } 5956 } 5957 5958 retval = lun->backend->config_write((union ctl_io *)ctsio); 5959 5960 return (retval); 5961} 5962 5963/* 5964 * Note that this function currently doesn't actually do anything inside 5965 * CTL to enforce things if the DQue bit is turned on. 5966 * 5967 * Also note that this function can't be used in the default case, because 5968 * the DQue bit isn't set in the changeable mask for the control mode page 5969 * anyway. This is just here as an example for how to implement a page 5970 * handler, and a placeholder in case we want to allow the user to turn 5971 * tagged queueing on and off. 5972 * 5973 * The D_SENSE bit handling is functional, however, and will turn 5974 * descriptor sense on and off for a given LUN. 5975 */ 5976int 5977ctl_control_page_handler(struct ctl_scsiio *ctsio, 5978 struct ctl_page_index *page_index, uint8_t *page_ptr) 5979{ 5980 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5981 struct ctl_lun *lun; 5982 struct ctl_softc *softc; 5983 int set_ua; 5984 uint32_t initidx; 5985 5986 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5987 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5988 set_ua = 0; 5989 5990 user_cp = (struct scsi_control_page *)page_ptr; 5991 current_cp = (struct scsi_control_page *) 5992 (page_index->page_data + (page_index->page_len * 5993 CTL_PAGE_CURRENT)); 5994 saved_cp = (struct scsi_control_page *) 5995 (page_index->page_data + (page_index->page_len * 5996 CTL_PAGE_SAVED)); 5997 5998 softc = control_softc; 5999 6000 mtx_lock(&lun->lun_lock); 6001 if (((current_cp->rlec & SCP_DSENSE) == 0) 6002 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 6003 /* 6004 * Descriptor sense is currently turned off and the user 6005 * wants to turn it on. 6006 */ 6007 current_cp->rlec |= SCP_DSENSE; 6008 saved_cp->rlec |= SCP_DSENSE; 6009 lun->flags |= CTL_LUN_SENSE_DESC; 6010 set_ua = 1; 6011 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 6012 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 6013 /* 6014 * Descriptor sense is currently turned on, and the user 6015 * wants to turn it off. 6016 */ 6017 current_cp->rlec &= ~SCP_DSENSE; 6018 saved_cp->rlec &= ~SCP_DSENSE; 6019 lun->flags &= ~CTL_LUN_SENSE_DESC; 6020 set_ua = 1; 6021 } 6022 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 6023 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6024#ifdef NEEDTOPORT 6025 csevent_log(CSC_CTL | CSC_SHELF_SW | 6026 CTL_UNTAG_TO_UNTAG, 6027 csevent_LogType_Trace, 6028 csevent_Severity_Information, 6029 csevent_AlertLevel_Green, 6030 csevent_FRU_Firmware, 6031 csevent_FRU_Unknown, 6032 "Received untagged to untagged transition"); 6033#endif /* NEEDTOPORT */ 6034 } else { 6035#ifdef NEEDTOPORT 6036 csevent_log(CSC_CTL | CSC_SHELF_SW | 6037 CTL_UNTAG_TO_TAG, 6038 csevent_LogType_ConfigChange, 6039 csevent_Severity_Information, 6040 csevent_AlertLevel_Green, 6041 csevent_FRU_Firmware, 6042 csevent_FRU_Unknown, 6043 "Received untagged to tagged " 6044 "queueing transition"); 6045#endif /* NEEDTOPORT */ 6046 6047 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6048 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6049 set_ua = 1; 6050 } 6051 } else { 6052 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6053#ifdef NEEDTOPORT 6054 csevent_log(CSC_CTL | CSC_SHELF_SW | 6055 CTL_TAG_TO_UNTAG, 6056 csevent_LogType_ConfigChange, 6057 csevent_Severity_Warning, 6058 csevent_AlertLevel_Yellow, 6059 csevent_FRU_Firmware, 6060 csevent_FRU_Unknown, 6061 "Received tagged queueing to untagged " 6062 "transition"); 6063#endif /* NEEDTOPORT */ 6064 6065 current_cp->queue_flags |= SCP_QUEUE_DQUE; 6066 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 6067 set_ua = 1; 6068 } else { 6069#ifdef NEEDTOPORT 6070 csevent_log(CSC_CTL | CSC_SHELF_SW | 6071 CTL_TAG_TO_TAG, 6072 csevent_LogType_Trace, 6073 csevent_Severity_Information, 6074 csevent_AlertLevel_Green, 6075 csevent_FRU_Firmware, 6076 csevent_FRU_Unknown, 6077 "Received tagged queueing to tagged " 6078 "queueing transition"); 6079#endif /* NEEDTOPORT */ 6080 } 6081 } 6082 if (set_ua != 0) { 6083 int i; 6084 /* 6085 * Let other initiators know that the mode 6086 * parameters for this LUN have changed. 6087 */ 6088 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6089 if (i == initidx) 6090 continue; 6091 6092 lun->pending_sense[i].ua_pending |= 6093 CTL_UA_MODE_CHANGE; 6094 } 6095 } 6096 mtx_unlock(&lun->lun_lock); 6097 6098 return (0); 6099} 6100 6101int 6102ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6103 struct ctl_page_index *page_index, uint8_t *page_ptr) 6104{ 6105 return (0); 6106} 6107 6108int 6109ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6110 struct ctl_page_index *page_index, int pc) 6111{ 6112 struct copan_power_subpage *page; 6113 6114 page = (struct copan_power_subpage *)page_index->page_data + 6115 (page_index->page_len * pc); 6116 6117 switch (pc) { 6118 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6119 /* 6120 * We don't update the changable bits for this page. 6121 */ 6122 break; 6123 case SMS_PAGE_CTRL_CURRENT >> 6: 6124 case SMS_PAGE_CTRL_DEFAULT >> 6: 6125 case SMS_PAGE_CTRL_SAVED >> 6: 6126#ifdef NEEDTOPORT 6127 ctl_update_power_subpage(page); 6128#endif 6129 break; 6130 default: 6131#ifdef NEEDTOPORT 6132 EPRINT(0, "Invalid PC %d!!", pc); 6133#endif 6134 break; 6135 } 6136 return (0); 6137} 6138 6139 6140int 6141ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6142 struct ctl_page_index *page_index, uint8_t *page_ptr) 6143{ 6144 struct copan_aps_subpage *user_sp; 6145 struct copan_aps_subpage *current_sp; 6146 union ctl_modepage_info *modepage_info; 6147 struct ctl_softc *softc; 6148 struct ctl_lun *lun; 6149 int retval; 6150 6151 retval = CTL_RETVAL_COMPLETE; 6152 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6153 (page_index->page_len * CTL_PAGE_CURRENT)); 6154 softc = control_softc; 6155 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6156 6157 user_sp = (struct copan_aps_subpage *)page_ptr; 6158 6159 modepage_info = (union ctl_modepage_info *) 6160 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6161 6162 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6163 modepage_info->header.subpage = page_index->subpage; 6164 modepage_info->aps.lock_active = user_sp->lock_active; 6165 6166 mtx_lock(&softc->ctl_lock); 6167 6168 /* 6169 * If there is a request to lock the LUN and another LUN is locked 6170 * this is an error. If the requested LUN is already locked ignore 6171 * the request. If no LUN is locked attempt to lock it. 6172 * if there is a request to unlock the LUN and the LUN is currently 6173 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6174 * if another LUN is locked or no LUN is locked. 6175 */ 6176 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6177 if (softc->aps_locked_lun == lun->lun) { 6178 /* 6179 * This LUN is already locked, so we're done. 6180 */ 6181 retval = CTL_RETVAL_COMPLETE; 6182 } else if (softc->aps_locked_lun == 0) { 6183 /* 6184 * No one has the lock, pass the request to the 6185 * backend. 6186 */ 6187 retval = lun->backend->config_write( 6188 (union ctl_io *)ctsio); 6189 } else { 6190 /* 6191 * Someone else has the lock, throw out the request. 6192 */ 6193 ctl_set_already_locked(ctsio); 6194 free(ctsio->kern_data_ptr, M_CTL); 6195 ctl_done((union ctl_io *)ctsio); 6196 6197 /* 6198 * Set the return value so that ctl_do_mode_select() 6199 * won't try to complete the command. We already 6200 * completed it here. 6201 */ 6202 retval = CTL_RETVAL_ERROR; 6203 } 6204 } else if (softc->aps_locked_lun == lun->lun) { 6205 /* 6206 * This LUN is locked, so pass the unlock request to the 6207 * backend. 6208 */ 6209 retval = lun->backend->config_write((union ctl_io *)ctsio); 6210 } 6211 mtx_unlock(&softc->ctl_lock); 6212 6213 return (retval); 6214} 6215 6216int 6217ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6218 struct ctl_page_index *page_index, 6219 uint8_t *page_ptr) 6220{ 6221 uint8_t *c; 6222 int i; 6223 6224 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6225 ctl_time_io_secs = 6226 (c[0] << 8) | 6227 (c[1] << 0) | 6228 0; 6229 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6230 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6231 printf("page data:"); 6232 for (i=0; i<8; i++) 6233 printf(" %.2x",page_ptr[i]); 6234 printf("\n"); 6235 return (0); 6236} 6237 6238int 6239ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6240 struct ctl_page_index *page_index, 6241 int pc) 6242{ 6243 struct copan_debugconf_subpage *page; 6244 6245 page = (struct copan_debugconf_subpage *)page_index->page_data + 6246 (page_index->page_len * pc); 6247 6248 switch (pc) { 6249 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6250 case SMS_PAGE_CTRL_DEFAULT >> 6: 6251 case SMS_PAGE_CTRL_SAVED >> 6: 6252 /* 6253 * We don't update the changable or default bits for this page. 6254 */ 6255 break; 6256 case SMS_PAGE_CTRL_CURRENT >> 6: 6257 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6258 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6259 break; 6260 default: 6261#ifdef NEEDTOPORT 6262 EPRINT(0, "Invalid PC %d!!", pc); 6263#endif /* NEEDTOPORT */ 6264 break; 6265 } 6266 return (0); 6267} 6268 6269 6270static int 6271ctl_do_mode_select(union ctl_io *io) 6272{ 6273 struct scsi_mode_page_header *page_header; 6274 struct ctl_page_index *page_index; 6275 struct ctl_scsiio *ctsio; 6276 int control_dev, page_len; 6277 int page_len_offset, page_len_size; 6278 union ctl_modepage_info *modepage_info; 6279 struct ctl_lun *lun; 6280 int *len_left, *len_used; 6281 int retval, i; 6282 6283 ctsio = &io->scsiio; 6284 page_index = NULL; 6285 page_len = 0; 6286 retval = CTL_RETVAL_COMPLETE; 6287 6288 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6289 6290 if (lun->be_lun->lun_type != T_DIRECT) 6291 control_dev = 1; 6292 else 6293 control_dev = 0; 6294 6295 modepage_info = (union ctl_modepage_info *) 6296 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6297 len_left = &modepage_info->header.len_left; 6298 len_used = &modepage_info->header.len_used; 6299 6300do_next_page: 6301 6302 page_header = (struct scsi_mode_page_header *) 6303 (ctsio->kern_data_ptr + *len_used); 6304 6305 if (*len_left == 0) { 6306 free(ctsio->kern_data_ptr, M_CTL); 6307 ctl_set_success(ctsio); 6308 ctl_done((union ctl_io *)ctsio); 6309 return (CTL_RETVAL_COMPLETE); 6310 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6311 6312 free(ctsio->kern_data_ptr, M_CTL); 6313 ctl_set_param_len_error(ctsio); 6314 ctl_done((union ctl_io *)ctsio); 6315 return (CTL_RETVAL_COMPLETE); 6316 6317 } else if ((page_header->page_code & SMPH_SPF) 6318 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6319 6320 free(ctsio->kern_data_ptr, M_CTL); 6321 ctl_set_param_len_error(ctsio); 6322 ctl_done((union ctl_io *)ctsio); 6323 return (CTL_RETVAL_COMPLETE); 6324 } 6325 6326 6327 /* 6328 * XXX KDM should we do something with the block descriptor? 6329 */ 6330 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6331 6332 if ((control_dev != 0) 6333 && (lun->mode_pages.index[i].page_flags & 6334 CTL_PAGE_FLAG_DISK_ONLY)) 6335 continue; 6336 6337 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6338 (page_header->page_code & SMPH_PC_MASK)) 6339 continue; 6340 6341 /* 6342 * If neither page has a subpage code, then we've got a 6343 * match. 6344 */ 6345 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6346 && ((page_header->page_code & SMPH_SPF) == 0)) { 6347 page_index = &lun->mode_pages.index[i]; 6348 page_len = page_header->page_length; 6349 break; 6350 } 6351 6352 /* 6353 * If both pages have subpages, then the subpage numbers 6354 * have to match. 6355 */ 6356 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6357 && (page_header->page_code & SMPH_SPF)) { 6358 struct scsi_mode_page_header_sp *sph; 6359 6360 sph = (struct scsi_mode_page_header_sp *)page_header; 6361 6362 if (lun->mode_pages.index[i].subpage == 6363 sph->subpage) { 6364 page_index = &lun->mode_pages.index[i]; 6365 page_len = scsi_2btoul(sph->page_length); 6366 break; 6367 } 6368 } 6369 } 6370 6371 /* 6372 * If we couldn't find the page, or if we don't have a mode select 6373 * handler for it, send back an error to the user. 6374 */ 6375 if ((page_index == NULL) 6376 || (page_index->select_handler == NULL)) { 6377 ctl_set_invalid_field(ctsio, 6378 /*sks_valid*/ 1, 6379 /*command*/ 0, 6380 /*field*/ *len_used, 6381 /*bit_valid*/ 0, 6382 /*bit*/ 0); 6383 free(ctsio->kern_data_ptr, M_CTL); 6384 ctl_done((union ctl_io *)ctsio); 6385 return (CTL_RETVAL_COMPLETE); 6386 } 6387 6388 if (page_index->page_code & SMPH_SPF) { 6389 page_len_offset = 2; 6390 page_len_size = 2; 6391 } else { 6392 page_len_size = 1; 6393 page_len_offset = 1; 6394 } 6395 6396 /* 6397 * If the length the initiator gives us isn't the one we specify in 6398 * the mode page header, or if they didn't specify enough data in 6399 * the CDB to avoid truncating this page, kick out the request. 6400 */ 6401 if ((page_len != (page_index->page_len - page_len_offset - 6402 page_len_size)) 6403 || (*len_left < page_index->page_len)) { 6404 6405 6406 ctl_set_invalid_field(ctsio, 6407 /*sks_valid*/ 1, 6408 /*command*/ 0, 6409 /*field*/ *len_used + page_len_offset, 6410 /*bit_valid*/ 0, 6411 /*bit*/ 0); 6412 free(ctsio->kern_data_ptr, M_CTL); 6413 ctl_done((union ctl_io *)ctsio); 6414 return (CTL_RETVAL_COMPLETE); 6415 } 6416 6417 /* 6418 * Run through the mode page, checking to make sure that the bits 6419 * the user changed are actually legal for him to change. 6420 */ 6421 for (i = 0; i < page_index->page_len; i++) { 6422 uint8_t *user_byte, *change_mask, *current_byte; 6423 int bad_bit; 6424 int j; 6425 6426 user_byte = (uint8_t *)page_header + i; 6427 change_mask = page_index->page_data + 6428 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6429 current_byte = page_index->page_data + 6430 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6431 6432 /* 6433 * Check to see whether the user set any bits in this byte 6434 * that he is not allowed to set. 6435 */ 6436 if ((*user_byte & ~(*change_mask)) == 6437 (*current_byte & ~(*change_mask))) 6438 continue; 6439 6440 /* 6441 * Go through bit by bit to determine which one is illegal. 6442 */ 6443 bad_bit = 0; 6444 for (j = 7; j >= 0; j--) { 6445 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6446 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6447 bad_bit = i; 6448 break; 6449 } 6450 } 6451 ctl_set_invalid_field(ctsio, 6452 /*sks_valid*/ 1, 6453 /*command*/ 0, 6454 /*field*/ *len_used + i, 6455 /*bit_valid*/ 1, 6456 /*bit*/ bad_bit); 6457 free(ctsio->kern_data_ptr, M_CTL); 6458 ctl_done((union ctl_io *)ctsio); 6459 return (CTL_RETVAL_COMPLETE); 6460 } 6461 6462 /* 6463 * Decrement these before we call the page handler, since we may 6464 * end up getting called back one way or another before the handler 6465 * returns to this context. 6466 */ 6467 *len_left -= page_index->page_len; 6468 *len_used += page_index->page_len; 6469 6470 retval = page_index->select_handler(ctsio, page_index, 6471 (uint8_t *)page_header); 6472 6473 /* 6474 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6475 * wait until this queued command completes to finish processing 6476 * the mode page. If it returns anything other than 6477 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6478 * already set the sense information, freed the data pointer, and 6479 * completed the io for us. 6480 */ 6481 if (retval != CTL_RETVAL_COMPLETE) 6482 goto bailout_no_done; 6483 6484 /* 6485 * If the initiator sent us more than one page, parse the next one. 6486 */ 6487 if (*len_left > 0) 6488 goto do_next_page; 6489 6490 ctl_set_success(ctsio); 6491 free(ctsio->kern_data_ptr, M_CTL); 6492 ctl_done((union ctl_io *)ctsio); 6493 6494bailout_no_done: 6495 6496 return (CTL_RETVAL_COMPLETE); 6497 6498} 6499 6500int 6501ctl_mode_select(struct ctl_scsiio *ctsio) 6502{ 6503 int param_len, pf, sp; 6504 int header_size, bd_len; 6505 int len_left, len_used; 6506 struct ctl_page_index *page_index; 6507 struct ctl_lun *lun; 6508 int control_dev, page_len; 6509 union ctl_modepage_info *modepage_info; 6510 int retval; 6511 6512 pf = 0; 6513 sp = 0; 6514 page_len = 0; 6515 len_used = 0; 6516 len_left = 0; 6517 retval = 0; 6518 bd_len = 0; 6519 page_index = NULL; 6520 6521 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6522 6523 if (lun->be_lun->lun_type != T_DIRECT) 6524 control_dev = 1; 6525 else 6526 control_dev = 0; 6527 6528 switch (ctsio->cdb[0]) { 6529 case MODE_SELECT_6: { 6530 struct scsi_mode_select_6 *cdb; 6531 6532 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6533 6534 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6535 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6536 6537 param_len = cdb->length; 6538 header_size = sizeof(struct scsi_mode_header_6); 6539 break; 6540 } 6541 case MODE_SELECT_10: { 6542 struct scsi_mode_select_10 *cdb; 6543 6544 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6545 6546 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6547 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6548 6549 param_len = scsi_2btoul(cdb->length); 6550 header_size = sizeof(struct scsi_mode_header_10); 6551 break; 6552 } 6553 default: 6554 ctl_set_invalid_opcode(ctsio); 6555 ctl_done((union ctl_io *)ctsio); 6556 return (CTL_RETVAL_COMPLETE); 6557 break; /* NOTREACHED */ 6558 } 6559 6560 /* 6561 * From SPC-3: 6562 * "A parameter list length of zero indicates that the Data-Out Buffer 6563 * shall be empty. This condition shall not be considered as an error." 6564 */ 6565 if (param_len == 0) { 6566 ctl_set_success(ctsio); 6567 ctl_done((union ctl_io *)ctsio); 6568 return (CTL_RETVAL_COMPLETE); 6569 } 6570 6571 /* 6572 * Since we'll hit this the first time through, prior to 6573 * allocation, we don't need to free a data buffer here. 6574 */ 6575 if (param_len < header_size) { 6576 ctl_set_param_len_error(ctsio); 6577 ctl_done((union ctl_io *)ctsio); 6578 return (CTL_RETVAL_COMPLETE); 6579 } 6580 6581 /* 6582 * Allocate the data buffer and grab the user's data. In theory, 6583 * we shouldn't have to sanity check the parameter list length here 6584 * because the maximum size is 64K. We should be able to malloc 6585 * that much without too many problems. 6586 */ 6587 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6588 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6589 ctsio->kern_data_len = param_len; 6590 ctsio->kern_total_len = param_len; 6591 ctsio->kern_data_resid = 0; 6592 ctsio->kern_rel_offset = 0; 6593 ctsio->kern_sg_entries = 0; 6594 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6595 ctsio->be_move_done = ctl_config_move_done; 6596 ctl_datamove((union ctl_io *)ctsio); 6597 6598 return (CTL_RETVAL_COMPLETE); 6599 } 6600 6601 switch (ctsio->cdb[0]) { 6602 case MODE_SELECT_6: { 6603 struct scsi_mode_header_6 *mh6; 6604 6605 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6606 bd_len = mh6->blk_desc_len; 6607 break; 6608 } 6609 case MODE_SELECT_10: { 6610 struct scsi_mode_header_10 *mh10; 6611 6612 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6613 bd_len = scsi_2btoul(mh10->blk_desc_len); 6614 break; 6615 } 6616 default: 6617 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6618 break; 6619 } 6620 6621 if (param_len < (header_size + bd_len)) { 6622 free(ctsio->kern_data_ptr, M_CTL); 6623 ctl_set_param_len_error(ctsio); 6624 ctl_done((union ctl_io *)ctsio); 6625 return (CTL_RETVAL_COMPLETE); 6626 } 6627 6628 /* 6629 * Set the IO_CONT flag, so that if this I/O gets passed to 6630 * ctl_config_write_done(), it'll get passed back to 6631 * ctl_do_mode_select() for further processing, or completion if 6632 * we're all done. 6633 */ 6634 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6635 ctsio->io_cont = ctl_do_mode_select; 6636 6637 modepage_info = (union ctl_modepage_info *) 6638 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6639 6640 memset(modepage_info, 0, sizeof(*modepage_info)); 6641 6642 len_left = param_len - header_size - bd_len; 6643 len_used = header_size + bd_len; 6644 6645 modepage_info->header.len_left = len_left; 6646 modepage_info->header.len_used = len_used; 6647 6648 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6649} 6650 6651int 6652ctl_mode_sense(struct ctl_scsiio *ctsio) 6653{ 6654 struct ctl_lun *lun; 6655 int pc, page_code, dbd, llba, subpage; 6656 int alloc_len, page_len, header_len, total_len; 6657 struct scsi_mode_block_descr *block_desc; 6658 struct ctl_page_index *page_index; 6659 int control_dev; 6660 6661 dbd = 0; 6662 llba = 0; 6663 block_desc = NULL; 6664 page_index = NULL; 6665 6666 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6667 6668 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6669 6670 if (lun->be_lun->lun_type != T_DIRECT) 6671 control_dev = 1; 6672 else 6673 control_dev = 0; 6674 6675 if (lun->flags & CTL_LUN_PR_RESERVED) { 6676 uint32_t residx; 6677 6678 /* 6679 * XXX KDM need a lock here. 6680 */ 6681 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 6682 if ((lun->res_type == SPR_TYPE_EX_AC 6683 && residx != lun->pr_res_idx) 6684 || ((lun->res_type == SPR_TYPE_EX_AC_RO 6685 || lun->res_type == SPR_TYPE_EX_AC_AR) 6686 && !lun->per_res[residx].registered)) { 6687 ctl_set_reservation_conflict(ctsio); 6688 ctl_done((union ctl_io *)ctsio); 6689 return (CTL_RETVAL_COMPLETE); 6690 } 6691 } 6692 6693 switch (ctsio->cdb[0]) { 6694 case MODE_SENSE_6: { 6695 struct scsi_mode_sense_6 *cdb; 6696 6697 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6698 6699 header_len = sizeof(struct scsi_mode_hdr_6); 6700 if (cdb->byte2 & SMS_DBD) 6701 dbd = 1; 6702 else 6703 header_len += sizeof(struct scsi_mode_block_descr); 6704 6705 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6706 page_code = cdb->page & SMS_PAGE_CODE; 6707 subpage = cdb->subpage; 6708 alloc_len = cdb->length; 6709 break; 6710 } 6711 case MODE_SENSE_10: { 6712 struct scsi_mode_sense_10 *cdb; 6713 6714 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6715 6716 header_len = sizeof(struct scsi_mode_hdr_10); 6717 6718 if (cdb->byte2 & SMS_DBD) 6719 dbd = 1; 6720 else 6721 header_len += sizeof(struct scsi_mode_block_descr); 6722 if (cdb->byte2 & SMS10_LLBAA) 6723 llba = 1; 6724 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6725 page_code = cdb->page & SMS_PAGE_CODE; 6726 subpage = cdb->subpage; 6727 alloc_len = scsi_2btoul(cdb->length); 6728 break; 6729 } 6730 default: 6731 ctl_set_invalid_opcode(ctsio); 6732 ctl_done((union ctl_io *)ctsio); 6733 return (CTL_RETVAL_COMPLETE); 6734 break; /* NOTREACHED */ 6735 } 6736 6737 /* 6738 * We have to make a first pass through to calculate the size of 6739 * the pages that match the user's query. Then we allocate enough 6740 * memory to hold it, and actually copy the data into the buffer. 6741 */ 6742 switch (page_code) { 6743 case SMS_ALL_PAGES_PAGE: { 6744 int i; 6745 6746 page_len = 0; 6747 6748 /* 6749 * At the moment, values other than 0 and 0xff here are 6750 * reserved according to SPC-3. 6751 */ 6752 if ((subpage != SMS_SUBPAGE_PAGE_0) 6753 && (subpage != SMS_SUBPAGE_ALL)) { 6754 ctl_set_invalid_field(ctsio, 6755 /*sks_valid*/ 1, 6756 /*command*/ 1, 6757 /*field*/ 3, 6758 /*bit_valid*/ 0, 6759 /*bit*/ 0); 6760 ctl_done((union ctl_io *)ctsio); 6761 return (CTL_RETVAL_COMPLETE); 6762 } 6763 6764 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6765 if ((control_dev != 0) 6766 && (lun->mode_pages.index[i].page_flags & 6767 CTL_PAGE_FLAG_DISK_ONLY)) 6768 continue; 6769 6770 /* 6771 * We don't use this subpage if the user didn't 6772 * request all subpages. 6773 */ 6774 if ((lun->mode_pages.index[i].subpage != 0) 6775 && (subpage == SMS_SUBPAGE_PAGE_0)) 6776 continue; 6777 6778#if 0 6779 printf("found page %#x len %d\n", 6780 lun->mode_pages.index[i].page_code & 6781 SMPH_PC_MASK, 6782 lun->mode_pages.index[i].page_len); 6783#endif 6784 page_len += lun->mode_pages.index[i].page_len; 6785 } 6786 break; 6787 } 6788 default: { 6789 int i; 6790 6791 page_len = 0; 6792 6793 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6794 /* Look for the right page code */ 6795 if ((lun->mode_pages.index[i].page_code & 6796 SMPH_PC_MASK) != page_code) 6797 continue; 6798 6799 /* Look for the right subpage or the subpage wildcard*/ 6800 if ((lun->mode_pages.index[i].subpage != subpage) 6801 && (subpage != SMS_SUBPAGE_ALL)) 6802 continue; 6803 6804 /* Make sure the page is supported for this dev type */ 6805 if ((control_dev != 0) 6806 && (lun->mode_pages.index[i].page_flags & 6807 CTL_PAGE_FLAG_DISK_ONLY)) 6808 continue; 6809 6810#if 0 6811 printf("found page %#x len %d\n", 6812 lun->mode_pages.index[i].page_code & 6813 SMPH_PC_MASK, 6814 lun->mode_pages.index[i].page_len); 6815#endif 6816 6817 page_len += lun->mode_pages.index[i].page_len; 6818 } 6819 6820 if (page_len == 0) { 6821 ctl_set_invalid_field(ctsio, 6822 /*sks_valid*/ 1, 6823 /*command*/ 1, 6824 /*field*/ 2, 6825 /*bit_valid*/ 1, 6826 /*bit*/ 5); 6827 ctl_done((union ctl_io *)ctsio); 6828 return (CTL_RETVAL_COMPLETE); 6829 } 6830 break; 6831 } 6832 } 6833 6834 total_len = header_len + page_len; 6835#if 0 6836 printf("header_len = %d, page_len = %d, total_len = %d\n", 6837 header_len, page_len, total_len); 6838#endif 6839 6840 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6841 ctsio->kern_sg_entries = 0; 6842 ctsio->kern_data_resid = 0; 6843 ctsio->kern_rel_offset = 0; 6844 if (total_len < alloc_len) { 6845 ctsio->residual = alloc_len - total_len; 6846 ctsio->kern_data_len = total_len; 6847 ctsio->kern_total_len = total_len; 6848 } else { 6849 ctsio->residual = 0; 6850 ctsio->kern_data_len = alloc_len; 6851 ctsio->kern_total_len = alloc_len; 6852 } 6853 6854 switch (ctsio->cdb[0]) { 6855 case MODE_SENSE_6: { 6856 struct scsi_mode_hdr_6 *header; 6857 6858 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6859 6860 header->datalen = ctl_min(total_len - 1, 254); 6861 6862 if (dbd) 6863 header->block_descr_len = 0; 6864 else 6865 header->block_descr_len = 6866 sizeof(struct scsi_mode_block_descr); 6867 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6868 break; 6869 } 6870 case MODE_SENSE_10: { 6871 struct scsi_mode_hdr_10 *header; 6872 int datalen; 6873 6874 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6875 6876 datalen = ctl_min(total_len - 2, 65533); 6877 scsi_ulto2b(datalen, header->datalen); 6878 if (dbd) 6879 scsi_ulto2b(0, header->block_descr_len); 6880 else 6881 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6882 header->block_descr_len); 6883 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6884 break; 6885 } 6886 default: 6887 panic("invalid CDB type %#x", ctsio->cdb[0]); 6888 break; /* NOTREACHED */ 6889 } 6890 6891 /* 6892 * If we've got a disk, use its blocksize in the block 6893 * descriptor. Otherwise, just set it to 0. 6894 */ 6895 if (dbd == 0) { 6896 if (control_dev != 0) 6897 scsi_ulto3b(lun->be_lun->blocksize, 6898 block_desc->block_len); 6899 else 6900 scsi_ulto3b(0, block_desc->block_len); 6901 } 6902 6903 switch (page_code) { 6904 case SMS_ALL_PAGES_PAGE: { 6905 int i, data_used; 6906 6907 data_used = header_len; 6908 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6909 struct ctl_page_index *page_index; 6910 6911 page_index = &lun->mode_pages.index[i]; 6912 6913 if ((control_dev != 0) 6914 && (page_index->page_flags & 6915 CTL_PAGE_FLAG_DISK_ONLY)) 6916 continue; 6917 6918 /* 6919 * We don't use this subpage if the user didn't 6920 * request all subpages. We already checked (above) 6921 * to make sure the user only specified a subpage 6922 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6923 */ 6924 if ((page_index->subpage != 0) 6925 && (subpage == SMS_SUBPAGE_PAGE_0)) 6926 continue; 6927 6928 /* 6929 * Call the handler, if it exists, to update the 6930 * page to the latest values. 6931 */ 6932 if (page_index->sense_handler != NULL) 6933 page_index->sense_handler(ctsio, page_index,pc); 6934 6935 memcpy(ctsio->kern_data_ptr + data_used, 6936 page_index->page_data + 6937 (page_index->page_len * pc), 6938 page_index->page_len); 6939 data_used += page_index->page_len; 6940 } 6941 break; 6942 } 6943 default: { 6944 int i, data_used; 6945 6946 data_used = header_len; 6947 6948 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6949 struct ctl_page_index *page_index; 6950 6951 page_index = &lun->mode_pages.index[i]; 6952 6953 /* Look for the right page code */ 6954 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6955 continue; 6956 6957 /* Look for the right subpage or the subpage wildcard*/ 6958 if ((page_index->subpage != subpage) 6959 && (subpage != SMS_SUBPAGE_ALL)) 6960 continue; 6961 6962 /* Make sure the page is supported for this dev type */ 6963 if ((control_dev != 0) 6964 && (page_index->page_flags & 6965 CTL_PAGE_FLAG_DISK_ONLY)) 6966 continue; 6967 6968 /* 6969 * Call the handler, if it exists, to update the 6970 * page to the latest values. 6971 */ 6972 if (page_index->sense_handler != NULL) 6973 page_index->sense_handler(ctsio, page_index,pc); 6974 6975 memcpy(ctsio->kern_data_ptr + data_used, 6976 page_index->page_data + 6977 (page_index->page_len * pc), 6978 page_index->page_len); 6979 data_used += page_index->page_len; 6980 } 6981 break; 6982 } 6983 } 6984 6985 ctsio->scsi_status = SCSI_STATUS_OK; 6986 6987 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6988 ctsio->be_move_done = ctl_config_move_done; 6989 ctl_datamove((union ctl_io *)ctsio); 6990 6991 return (CTL_RETVAL_COMPLETE); 6992} 6993 6994int 6995ctl_read_capacity(struct ctl_scsiio *ctsio) 6996{ 6997 struct scsi_read_capacity *cdb; 6998 struct scsi_read_capacity_data *data; 6999 struct ctl_lun *lun; 7000 uint32_t lba; 7001 7002 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 7003 7004 cdb = (struct scsi_read_capacity *)ctsio->cdb; 7005 7006 lba = scsi_4btoul(cdb->addr); 7007 if (((cdb->pmi & SRC_PMI) == 0) 7008 && (lba != 0)) { 7009 ctl_set_invalid_field(/*ctsio*/ ctsio, 7010 /*sks_valid*/ 1, 7011 /*command*/ 1, 7012 /*field*/ 2, 7013 /*bit_valid*/ 0, 7014 /*bit*/ 0); 7015 ctl_done((union ctl_io *)ctsio); 7016 return (CTL_RETVAL_COMPLETE); 7017 } 7018 7019 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7020 7021 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7022 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 7023 ctsio->residual = 0; 7024 ctsio->kern_data_len = sizeof(*data); 7025 ctsio->kern_total_len = sizeof(*data); 7026 ctsio->kern_data_resid = 0; 7027 ctsio->kern_rel_offset = 0; 7028 ctsio->kern_sg_entries = 0; 7029 7030 /* 7031 * If the maximum LBA is greater than 0xfffffffe, the user must 7032 * issue a SERVICE ACTION IN (16) command, with the read capacity 7033 * serivce action set. 7034 */ 7035 if (lun->be_lun->maxlba > 0xfffffffe) 7036 scsi_ulto4b(0xffffffff, data->addr); 7037 else 7038 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 7039 7040 /* 7041 * XXX KDM this may not be 512 bytes... 7042 */ 7043 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7044 7045 ctsio->scsi_status = SCSI_STATUS_OK; 7046 7047 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7048 ctsio->be_move_done = ctl_config_move_done; 7049 ctl_datamove((union ctl_io *)ctsio); 7050 7051 return (CTL_RETVAL_COMPLETE); 7052} 7053 7054static int 7055ctl_read_capacity_16(struct ctl_scsiio *ctsio) 7056{ 7057 struct scsi_read_capacity_16 *cdb; 7058 struct scsi_read_capacity_data_long *data; 7059 struct ctl_lun *lun; 7060 uint64_t lba; 7061 uint32_t alloc_len; 7062 7063 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 7064 7065 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 7066 7067 alloc_len = scsi_4btoul(cdb->alloc_len); 7068 lba = scsi_8btou64(cdb->addr); 7069 7070 if ((cdb->reladr & SRC16_PMI) 7071 && (lba != 0)) { 7072 ctl_set_invalid_field(/*ctsio*/ ctsio, 7073 /*sks_valid*/ 1, 7074 /*command*/ 1, 7075 /*field*/ 2, 7076 /*bit_valid*/ 0, 7077 /*bit*/ 0); 7078 ctl_done((union ctl_io *)ctsio); 7079 return (CTL_RETVAL_COMPLETE); 7080 } 7081 7082 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7083 7084 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7085 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 7086 7087 if (sizeof(*data) < alloc_len) { 7088 ctsio->residual = alloc_len - sizeof(*data); 7089 ctsio->kern_data_len = sizeof(*data); 7090 ctsio->kern_total_len = sizeof(*data); 7091 } else { 7092 ctsio->residual = 0; 7093 ctsio->kern_data_len = alloc_len; 7094 ctsio->kern_total_len = alloc_len; 7095 } 7096 ctsio->kern_data_resid = 0; 7097 ctsio->kern_rel_offset = 0; 7098 ctsio->kern_sg_entries = 0; 7099 7100 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7101 /* XXX KDM this may not be 512 bytes... */ 7102 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7103 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7104 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7105 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7106 data->lalba_lbp[0] |= SRC16_LBPME; 7107 7108 ctsio->scsi_status = SCSI_STATUS_OK; 7109 7110 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7111 ctsio->be_move_done = ctl_config_move_done; 7112 ctl_datamove((union ctl_io *)ctsio); 7113 7114 return (CTL_RETVAL_COMPLETE); 7115} 7116 7117int 7118ctl_service_action_in(struct ctl_scsiio *ctsio) 7119{ 7120 struct scsi_service_action_in *cdb; 7121 int retval; 7122 7123 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 7124 7125 cdb = (struct scsi_service_action_in *)ctsio->cdb; 7126 7127 retval = CTL_RETVAL_COMPLETE; 7128 7129 switch (cdb->service_action) { 7130 case SRC16_SERVICE_ACTION: 7131 retval = ctl_read_capacity_16(ctsio); 7132 break; 7133 default: 7134 ctl_set_invalid_field(/*ctsio*/ ctsio, 7135 /*sks_valid*/ 1, 7136 /*command*/ 1, 7137 /*field*/ 1, 7138 /*bit_valid*/ 1, 7139 /*bit*/ 4); 7140 ctl_done((union ctl_io *)ctsio); 7141 break; 7142 } 7143 7144 return (retval); 7145} 7146 7147int 7148ctl_maintenance_in(struct ctl_scsiio *ctsio) 7149{ 7150 struct scsi_maintenance_in *cdb; 7151 int retval; 7152 int alloc_len, total_len = 0; 7153 int num_target_port_groups, single; 7154 struct ctl_lun *lun; 7155 struct ctl_softc *softc; 7156 struct scsi_target_group_data *rtg_ptr; 7157 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 7158 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 7159 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 7160 7161 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 7162 7163 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 7164 softc = control_softc; 7165 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7166 7167 retval = CTL_RETVAL_COMPLETE; 7168 7169 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 7170 ctl_set_invalid_field(/*ctsio*/ ctsio, 7171 /*sks_valid*/ 1, 7172 /*command*/ 1, 7173 /*field*/ 1, 7174 /*bit_valid*/ 1, 7175 /*bit*/ 4); 7176 ctl_done((union ctl_io *)ctsio); 7177 return(retval); 7178 } 7179 7180 single = ctl_is_single; 7181 if (single) 7182 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 7183 else 7184 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7185 7186 total_len = sizeof(struct scsi_target_group_data) + 7187 sizeof(struct scsi_target_port_group_descriptor) * 7188 num_target_port_groups + 7189 sizeof(struct scsi_target_port_descriptor) * 7190 NUM_PORTS_PER_GRP * num_target_port_groups; 7191 7192 alloc_len = scsi_4btoul(cdb->length); 7193 7194 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7195 7196 ctsio->kern_sg_entries = 0; 7197 7198 if (total_len < alloc_len) { 7199 ctsio->residual = alloc_len - total_len; 7200 ctsio->kern_data_len = total_len; 7201 ctsio->kern_total_len = total_len; 7202 } else { 7203 ctsio->residual = 0; 7204 ctsio->kern_data_len = alloc_len; 7205 ctsio->kern_total_len = alloc_len; 7206 } 7207 ctsio->kern_data_resid = 0; 7208 ctsio->kern_rel_offset = 0; 7209 7210 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7211 7212 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7213 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7214 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7215 &tp_desc_ptr1_1->desc_list[0]; 7216 7217 if (single == 0) { 7218 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7219 &tp_desc_ptr1_2->desc_list[0]; 7220 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7221 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7222 &tp_desc_ptr2_1->desc_list[0]; 7223 } else { 7224 tpg_desc_ptr2 = NULL; 7225 tp_desc_ptr2_1 = NULL; 7226 tp_desc_ptr2_2 = NULL; 7227 } 7228 7229 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7230 if (single == 0) { 7231 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7232 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7233 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7234 tpg_desc_ptr2->pref_state = 7235 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7236 } else { 7237 tpg_desc_ptr1->pref_state = 7238 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7239 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7240 } 7241 } else { 7242 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7243 tpg_desc_ptr1->pref_state = 7244 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7245 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7246 } else { 7247 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7248 tpg_desc_ptr2->pref_state = 7249 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7250 } 7251 } 7252 } else { 7253 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7254 } 7255 tpg_desc_ptr1->support = 0; 7256 tpg_desc_ptr1->target_port_group[1] = 1; 7257 tpg_desc_ptr1->status = TPG_IMPLICIT; 7258 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7259 7260 if (single == 0) { 7261 tpg_desc_ptr2->support = 0; 7262 tpg_desc_ptr2->target_port_group[1] = 2; 7263 tpg_desc_ptr2->status = TPG_IMPLICIT; 7264 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7265 7266 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7267 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7268 7269 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7270 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7271 } else { 7272 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7273 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7274 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7275 } else { 7276 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7277 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7278 } 7279 } 7280 7281 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7282 ctsio->be_move_done = ctl_config_move_done; 7283 7284 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7285 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7286 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7287 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7288 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7289 7290 ctl_datamove((union ctl_io *)ctsio); 7291 return(retval); 7292} 7293 7294int 7295ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7296{ 7297 struct scsi_per_res_in *cdb; 7298 int alloc_len, total_len = 0; 7299 /* struct scsi_per_res_in_rsrv in_data; */ 7300 struct ctl_lun *lun; 7301 struct ctl_softc *softc; 7302 7303 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7304 7305 softc = control_softc; 7306 7307 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7308 7309 alloc_len = scsi_2btoul(cdb->length); 7310 7311 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7312 7313retry: 7314 mtx_lock(&lun->lun_lock); 7315 switch (cdb->action) { 7316 case SPRI_RK: /* read keys */ 7317 total_len = sizeof(struct scsi_per_res_in_keys) + 7318 lun->pr_key_count * 7319 sizeof(struct scsi_per_res_key); 7320 break; 7321 case SPRI_RR: /* read reservation */ 7322 if (lun->flags & CTL_LUN_PR_RESERVED) 7323 total_len = sizeof(struct scsi_per_res_in_rsrv); 7324 else 7325 total_len = sizeof(struct scsi_per_res_in_header); 7326 break; 7327 case SPRI_RC: /* report capabilities */ 7328 total_len = sizeof(struct scsi_per_res_cap); 7329 break; 7330 case SPRI_RS: /* read full status */ 7331 default: 7332 mtx_unlock(&lun->lun_lock); 7333 ctl_set_invalid_field(ctsio, 7334 /*sks_valid*/ 1, 7335 /*command*/ 1, 7336 /*field*/ 1, 7337 /*bit_valid*/ 1, 7338 /*bit*/ 0); 7339 ctl_done((union ctl_io *)ctsio); 7340 return (CTL_RETVAL_COMPLETE); 7341 break; /* NOTREACHED */ 7342 } 7343 mtx_unlock(&lun->lun_lock); 7344 7345 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7346 7347 if (total_len < alloc_len) { 7348 ctsio->residual = alloc_len - total_len; 7349 ctsio->kern_data_len = total_len; 7350 ctsio->kern_total_len = total_len; 7351 } else { 7352 ctsio->residual = 0; 7353 ctsio->kern_data_len = alloc_len; 7354 ctsio->kern_total_len = alloc_len; 7355 } 7356 7357 ctsio->kern_data_resid = 0; 7358 ctsio->kern_rel_offset = 0; 7359 ctsio->kern_sg_entries = 0; 7360 7361 mtx_lock(&lun->lun_lock); 7362 switch (cdb->action) { 7363 case SPRI_RK: { // read keys 7364 struct scsi_per_res_in_keys *res_keys; 7365 int i, key_count; 7366 7367 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7368 7369 /* 7370 * We had to drop the lock to allocate our buffer, which 7371 * leaves time for someone to come in with another 7372 * persistent reservation. (That is unlikely, though, 7373 * since this should be the only persistent reservation 7374 * command active right now.) 7375 */ 7376 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7377 (lun->pr_key_count * 7378 sizeof(struct scsi_per_res_key)))){ 7379 mtx_unlock(&lun->lun_lock); 7380 free(ctsio->kern_data_ptr, M_CTL); 7381 printf("%s: reservation length changed, retrying\n", 7382 __func__); 7383 goto retry; 7384 } 7385 7386 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7387 7388 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7389 lun->pr_key_count, res_keys->header.length); 7390 7391 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7392 if (!lun->per_res[i].registered) 7393 continue; 7394 7395 /* 7396 * We used lun->pr_key_count to calculate the 7397 * size to allocate. If it turns out the number of 7398 * initiators with the registered flag set is 7399 * larger than that (i.e. they haven't been kept in 7400 * sync), we've got a problem. 7401 */ 7402 if (key_count >= lun->pr_key_count) { 7403#ifdef NEEDTOPORT 7404 csevent_log(CSC_CTL | CSC_SHELF_SW | 7405 CTL_PR_ERROR, 7406 csevent_LogType_Fault, 7407 csevent_AlertLevel_Yellow, 7408 csevent_FRU_ShelfController, 7409 csevent_FRU_Firmware, 7410 csevent_FRU_Unknown, 7411 "registered keys %d >= key " 7412 "count %d", key_count, 7413 lun->pr_key_count); 7414#endif 7415 key_count++; 7416 continue; 7417 } 7418 memcpy(res_keys->keys[key_count].key, 7419 lun->per_res[i].res_key.key, 7420 ctl_min(sizeof(res_keys->keys[key_count].key), 7421 sizeof(lun->per_res[i].res_key))); 7422 key_count++; 7423 } 7424 break; 7425 } 7426 case SPRI_RR: { // read reservation 7427 struct scsi_per_res_in_rsrv *res; 7428 int tmp_len, header_only; 7429 7430 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7431 7432 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7433 7434 if (lun->flags & CTL_LUN_PR_RESERVED) 7435 { 7436 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7437 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7438 res->header.length); 7439 header_only = 0; 7440 } else { 7441 tmp_len = sizeof(struct scsi_per_res_in_header); 7442 scsi_ulto4b(0, res->header.length); 7443 header_only = 1; 7444 } 7445 7446 /* 7447 * We had to drop the lock to allocate our buffer, which 7448 * leaves time for someone to come in with another 7449 * persistent reservation. (That is unlikely, though, 7450 * since this should be the only persistent reservation 7451 * command active right now.) 7452 */ 7453 if (tmp_len != total_len) { 7454 mtx_unlock(&lun->lun_lock); 7455 free(ctsio->kern_data_ptr, M_CTL); 7456 printf("%s: reservation status changed, retrying\n", 7457 __func__); 7458 goto retry; 7459 } 7460 7461 /* 7462 * No reservation held, so we're done. 7463 */ 7464 if (header_only != 0) 7465 break; 7466 7467 /* 7468 * If the registration is an All Registrants type, the key 7469 * is 0, since it doesn't really matter. 7470 */ 7471 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7472 memcpy(res->data.reservation, 7473 &lun->per_res[lun->pr_res_idx].res_key, 7474 sizeof(struct scsi_per_res_key)); 7475 } 7476 res->data.scopetype = lun->res_type; 7477 break; 7478 } 7479 case SPRI_RC: //report capabilities 7480 { 7481 struct scsi_per_res_cap *res_cap; 7482 uint16_t type_mask; 7483 7484 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7485 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7486 res_cap->flags2 |= SPRI_TMV | SPRI_ALLOW_3; 7487 type_mask = SPRI_TM_WR_EX_AR | 7488 SPRI_TM_EX_AC_RO | 7489 SPRI_TM_WR_EX_RO | 7490 SPRI_TM_EX_AC | 7491 SPRI_TM_WR_EX | 7492 SPRI_TM_EX_AC_AR; 7493 scsi_ulto2b(type_mask, res_cap->type_mask); 7494 break; 7495 } 7496 case SPRI_RS: //read full status 7497 default: 7498 /* 7499 * This is a bug, because we just checked for this above, 7500 * and should have returned an error. 7501 */ 7502 panic("Invalid PR type %x", cdb->action); 7503 break; /* NOTREACHED */ 7504 } 7505 mtx_unlock(&lun->lun_lock); 7506 7507 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7508 ctsio->be_move_done = ctl_config_move_done; 7509 7510 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7511 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7512 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7513 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7514 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7515 7516 ctl_datamove((union ctl_io *)ctsio); 7517 7518 return (CTL_RETVAL_COMPLETE); 7519} 7520 7521/* 7522 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7523 * it should return. 7524 */ 7525static int 7526ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7527 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7528 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7529 struct scsi_per_res_out_parms* param) 7530{ 7531 union ctl_ha_msg persis_io; 7532 int retval, i; 7533 int isc_retval; 7534 7535 retval = 0; 7536 7537 mtx_lock(&lun->lun_lock); 7538 if (sa_res_key == 0) { 7539 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7540 /* validate scope and type */ 7541 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7542 SPR_LU_SCOPE) { 7543 mtx_unlock(&lun->lun_lock); 7544 ctl_set_invalid_field(/*ctsio*/ ctsio, 7545 /*sks_valid*/ 1, 7546 /*command*/ 1, 7547 /*field*/ 2, 7548 /*bit_valid*/ 1, 7549 /*bit*/ 4); 7550 ctl_done((union ctl_io *)ctsio); 7551 return (1); 7552 } 7553 7554 if (type>8 || type==2 || type==4 || type==0) { 7555 mtx_unlock(&lun->lun_lock); 7556 ctl_set_invalid_field(/*ctsio*/ ctsio, 7557 /*sks_valid*/ 1, 7558 /*command*/ 1, 7559 /*field*/ 2, 7560 /*bit_valid*/ 1, 7561 /*bit*/ 0); 7562 ctl_done((union ctl_io *)ctsio); 7563 return (1); 7564 } 7565 7566 /* temporarily unregister this nexus */ 7567 lun->per_res[residx].registered = 0; 7568 7569 /* 7570 * Unregister everybody else and build UA for 7571 * them 7572 */ 7573 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7574 if (lun->per_res[i].registered == 0) 7575 continue; 7576 7577 if (!persis_offset 7578 && i <CTL_MAX_INITIATORS) 7579 lun->pending_sense[i].ua_pending |= 7580 CTL_UA_REG_PREEMPT; 7581 else if (persis_offset 7582 && i >= persis_offset) 7583 lun->pending_sense[i-persis_offset 7584 ].ua_pending |= 7585 CTL_UA_REG_PREEMPT; 7586 lun->per_res[i].registered = 0; 7587 memset(&lun->per_res[i].res_key, 0, 7588 sizeof(struct scsi_per_res_key)); 7589 } 7590 lun->per_res[residx].registered = 1; 7591 lun->pr_key_count = 1; 7592 lun->res_type = type; 7593 if (lun->res_type != SPR_TYPE_WR_EX_AR 7594 && lun->res_type != SPR_TYPE_EX_AC_AR) 7595 lun->pr_res_idx = residx; 7596 7597 /* send msg to other side */ 7598 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7599 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7600 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7601 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7602 persis_io.pr.pr_info.res_type = type; 7603 memcpy(persis_io.pr.pr_info.sa_res_key, 7604 param->serv_act_res_key, 7605 sizeof(param->serv_act_res_key)); 7606 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7607 &persis_io, sizeof(persis_io), 0)) > 7608 CTL_HA_STATUS_SUCCESS) { 7609 printf("CTL:Persis Out error returned " 7610 "from ctl_ha_msg_send %d\n", 7611 isc_retval); 7612 } 7613 } else { 7614 /* not all registrants */ 7615 mtx_unlock(&lun->lun_lock); 7616 free(ctsio->kern_data_ptr, M_CTL); 7617 ctl_set_invalid_field(ctsio, 7618 /*sks_valid*/ 1, 7619 /*command*/ 0, 7620 /*field*/ 8, 7621 /*bit_valid*/ 0, 7622 /*bit*/ 0); 7623 ctl_done((union ctl_io *)ctsio); 7624 return (1); 7625 } 7626 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7627 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7628 int found = 0; 7629 7630 if (res_key == sa_res_key) { 7631 /* special case */ 7632 /* 7633 * The spec implies this is not good but doesn't 7634 * say what to do. There are two choices either 7635 * generate a res conflict or check condition 7636 * with illegal field in parameter data. Since 7637 * that is what is done when the sa_res_key is 7638 * zero I'll take that approach since this has 7639 * to do with the sa_res_key. 7640 */ 7641 mtx_unlock(&lun->lun_lock); 7642 free(ctsio->kern_data_ptr, M_CTL); 7643 ctl_set_invalid_field(ctsio, 7644 /*sks_valid*/ 1, 7645 /*command*/ 0, 7646 /*field*/ 8, 7647 /*bit_valid*/ 0, 7648 /*bit*/ 0); 7649 ctl_done((union ctl_io *)ctsio); 7650 return (1); 7651 } 7652 7653 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7654 if (lun->per_res[i].registered 7655 && memcmp(param->serv_act_res_key, 7656 lun->per_res[i].res_key.key, 7657 sizeof(struct scsi_per_res_key)) != 0) 7658 continue; 7659 7660 found = 1; 7661 lun->per_res[i].registered = 0; 7662 memset(&lun->per_res[i].res_key, 0, 7663 sizeof(struct scsi_per_res_key)); 7664 lun->pr_key_count--; 7665 7666 if (!persis_offset 7667 && i < CTL_MAX_INITIATORS) 7668 lun->pending_sense[i].ua_pending |= 7669 CTL_UA_REG_PREEMPT; 7670 else if (persis_offset 7671 && i >= persis_offset) 7672 lun->pending_sense[i-persis_offset].ua_pending|= 7673 CTL_UA_REG_PREEMPT; 7674 } 7675 if (!found) { 7676 mtx_unlock(&lun->lun_lock); 7677 free(ctsio->kern_data_ptr, M_CTL); 7678 ctl_set_reservation_conflict(ctsio); 7679 ctl_done((union ctl_io *)ctsio); 7680 return (CTL_RETVAL_COMPLETE); 7681 } 7682 /* send msg to other side */ 7683 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7684 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7685 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7686 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7687 persis_io.pr.pr_info.res_type = type; 7688 memcpy(persis_io.pr.pr_info.sa_res_key, 7689 param->serv_act_res_key, 7690 sizeof(param->serv_act_res_key)); 7691 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7692 &persis_io, sizeof(persis_io), 0)) > 7693 CTL_HA_STATUS_SUCCESS) { 7694 printf("CTL:Persis Out error returned from " 7695 "ctl_ha_msg_send %d\n", isc_retval); 7696 } 7697 } else { 7698 /* Reserved but not all registrants */ 7699 /* sa_res_key is res holder */ 7700 if (memcmp(param->serv_act_res_key, 7701 lun->per_res[lun->pr_res_idx].res_key.key, 7702 sizeof(struct scsi_per_res_key)) == 0) { 7703 /* validate scope and type */ 7704 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7705 SPR_LU_SCOPE) { 7706 mtx_unlock(&lun->lun_lock); 7707 ctl_set_invalid_field(/*ctsio*/ ctsio, 7708 /*sks_valid*/ 1, 7709 /*command*/ 1, 7710 /*field*/ 2, 7711 /*bit_valid*/ 1, 7712 /*bit*/ 4); 7713 ctl_done((union ctl_io *)ctsio); 7714 return (1); 7715 } 7716 7717 if (type>8 || type==2 || type==4 || type==0) { 7718 mtx_unlock(&lun->lun_lock); 7719 ctl_set_invalid_field(/*ctsio*/ ctsio, 7720 /*sks_valid*/ 1, 7721 /*command*/ 1, 7722 /*field*/ 2, 7723 /*bit_valid*/ 1, 7724 /*bit*/ 0); 7725 ctl_done((union ctl_io *)ctsio); 7726 return (1); 7727 } 7728 7729 /* 7730 * Do the following: 7731 * if sa_res_key != res_key remove all 7732 * registrants w/sa_res_key and generate UA 7733 * for these registrants(Registrations 7734 * Preempted) if it wasn't an exclusive 7735 * reservation generate UA(Reservations 7736 * Preempted) for all other registered nexuses 7737 * if the type has changed. Establish the new 7738 * reservation and holder. If res_key and 7739 * sa_res_key are the same do the above 7740 * except don't unregister the res holder. 7741 */ 7742 7743 /* 7744 * Temporarily unregister so it won't get 7745 * removed or UA generated 7746 */ 7747 lun->per_res[residx].registered = 0; 7748 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7749 if (lun->per_res[i].registered == 0) 7750 continue; 7751 7752 if (memcmp(param->serv_act_res_key, 7753 lun->per_res[i].res_key.key, 7754 sizeof(struct scsi_per_res_key)) == 0) { 7755 lun->per_res[i].registered = 0; 7756 memset(&lun->per_res[i].res_key, 7757 0, 7758 sizeof(struct scsi_per_res_key)); 7759 lun->pr_key_count--; 7760 7761 if (!persis_offset 7762 && i < CTL_MAX_INITIATORS) 7763 lun->pending_sense[i 7764 ].ua_pending |= 7765 CTL_UA_REG_PREEMPT; 7766 else if (persis_offset 7767 && i >= persis_offset) 7768 lun->pending_sense[ 7769 i-persis_offset].ua_pending |= 7770 CTL_UA_REG_PREEMPT; 7771 } else if (type != lun->res_type 7772 && (lun->res_type == SPR_TYPE_WR_EX_RO 7773 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7774 if (!persis_offset 7775 && i < CTL_MAX_INITIATORS) 7776 lun->pending_sense[i 7777 ].ua_pending |= 7778 CTL_UA_RES_RELEASE; 7779 else if (persis_offset 7780 && i >= persis_offset) 7781 lun->pending_sense[ 7782 i-persis_offset 7783 ].ua_pending |= 7784 CTL_UA_RES_RELEASE; 7785 } 7786 } 7787 lun->per_res[residx].registered = 1; 7788 lun->res_type = type; 7789 if (lun->res_type != SPR_TYPE_WR_EX_AR 7790 && lun->res_type != SPR_TYPE_EX_AC_AR) 7791 lun->pr_res_idx = residx; 7792 else 7793 lun->pr_res_idx = 7794 CTL_PR_ALL_REGISTRANTS; 7795 7796 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7797 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7798 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7799 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7800 persis_io.pr.pr_info.res_type = type; 7801 memcpy(persis_io.pr.pr_info.sa_res_key, 7802 param->serv_act_res_key, 7803 sizeof(param->serv_act_res_key)); 7804 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7805 &persis_io, sizeof(persis_io), 0)) > 7806 CTL_HA_STATUS_SUCCESS) { 7807 printf("CTL:Persis Out error returned " 7808 "from ctl_ha_msg_send %d\n", 7809 isc_retval); 7810 } 7811 } else { 7812 /* 7813 * sa_res_key is not the res holder just 7814 * remove registrants 7815 */ 7816 int found=0; 7817 7818 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7819 if (memcmp(param->serv_act_res_key, 7820 lun->per_res[i].res_key.key, 7821 sizeof(struct scsi_per_res_key)) != 0) 7822 continue; 7823 7824 found = 1; 7825 lun->per_res[i].registered = 0; 7826 memset(&lun->per_res[i].res_key, 0, 7827 sizeof(struct scsi_per_res_key)); 7828 lun->pr_key_count--; 7829 7830 if (!persis_offset 7831 && i < CTL_MAX_INITIATORS) 7832 lun->pending_sense[i].ua_pending |= 7833 CTL_UA_REG_PREEMPT; 7834 else if (persis_offset 7835 && i >= persis_offset) 7836 lun->pending_sense[ 7837 i-persis_offset].ua_pending |= 7838 CTL_UA_REG_PREEMPT; 7839 } 7840 7841 if (!found) { 7842 mtx_unlock(&lun->lun_lock); 7843 free(ctsio->kern_data_ptr, M_CTL); 7844 ctl_set_reservation_conflict(ctsio); 7845 ctl_done((union ctl_io *)ctsio); 7846 return (1); 7847 } 7848 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7849 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7850 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7851 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7852 persis_io.pr.pr_info.res_type = type; 7853 memcpy(persis_io.pr.pr_info.sa_res_key, 7854 param->serv_act_res_key, 7855 sizeof(param->serv_act_res_key)); 7856 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7857 &persis_io, sizeof(persis_io), 0)) > 7858 CTL_HA_STATUS_SUCCESS) { 7859 printf("CTL:Persis Out error returned " 7860 "from ctl_ha_msg_send %d\n", 7861 isc_retval); 7862 } 7863 } 7864 } 7865 7866 lun->PRGeneration++; 7867 mtx_unlock(&lun->lun_lock); 7868 7869 return (retval); 7870} 7871 7872static void 7873ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7874{ 7875 int i; 7876 7877 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7878 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7879 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7880 msg->pr.pr_info.sa_res_key, 7881 sizeof(struct scsi_per_res_key)) != 0) { 7882 uint64_t sa_res_key; 7883 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7884 7885 if (sa_res_key == 0) { 7886 /* temporarily unregister this nexus */ 7887 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7888 7889 /* 7890 * Unregister everybody else and build UA for 7891 * them 7892 */ 7893 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7894 if (lun->per_res[i].registered == 0) 7895 continue; 7896 7897 if (!persis_offset 7898 && i < CTL_MAX_INITIATORS) 7899 lun->pending_sense[i].ua_pending |= 7900 CTL_UA_REG_PREEMPT; 7901 else if (persis_offset && i >= persis_offset) 7902 lun->pending_sense[i - 7903 persis_offset].ua_pending |= 7904 CTL_UA_REG_PREEMPT; 7905 lun->per_res[i].registered = 0; 7906 memset(&lun->per_res[i].res_key, 0, 7907 sizeof(struct scsi_per_res_key)); 7908 } 7909 7910 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7911 lun->pr_key_count = 1; 7912 lun->res_type = msg->pr.pr_info.res_type; 7913 if (lun->res_type != SPR_TYPE_WR_EX_AR 7914 && lun->res_type != SPR_TYPE_EX_AC_AR) 7915 lun->pr_res_idx = msg->pr.pr_info.residx; 7916 } else { 7917 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7918 if (memcmp(msg->pr.pr_info.sa_res_key, 7919 lun->per_res[i].res_key.key, 7920 sizeof(struct scsi_per_res_key)) != 0) 7921 continue; 7922 7923 lun->per_res[i].registered = 0; 7924 memset(&lun->per_res[i].res_key, 0, 7925 sizeof(struct scsi_per_res_key)); 7926 lun->pr_key_count--; 7927 7928 if (!persis_offset 7929 && i < persis_offset) 7930 lun->pending_sense[i].ua_pending |= 7931 CTL_UA_REG_PREEMPT; 7932 else if (persis_offset 7933 && i >= persis_offset) 7934 lun->pending_sense[i - 7935 persis_offset].ua_pending |= 7936 CTL_UA_REG_PREEMPT; 7937 } 7938 } 7939 } else { 7940 /* 7941 * Temporarily unregister so it won't get removed 7942 * or UA generated 7943 */ 7944 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7945 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7946 if (lun->per_res[i].registered == 0) 7947 continue; 7948 7949 if (memcmp(msg->pr.pr_info.sa_res_key, 7950 lun->per_res[i].res_key.key, 7951 sizeof(struct scsi_per_res_key)) == 0) { 7952 lun->per_res[i].registered = 0; 7953 memset(&lun->per_res[i].res_key, 0, 7954 sizeof(struct scsi_per_res_key)); 7955 lun->pr_key_count--; 7956 if (!persis_offset 7957 && i < CTL_MAX_INITIATORS) 7958 lun->pending_sense[i].ua_pending |= 7959 CTL_UA_REG_PREEMPT; 7960 else if (persis_offset 7961 && i >= persis_offset) 7962 lun->pending_sense[i - 7963 persis_offset].ua_pending |= 7964 CTL_UA_REG_PREEMPT; 7965 } else if (msg->pr.pr_info.res_type != lun->res_type 7966 && (lun->res_type == SPR_TYPE_WR_EX_RO 7967 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7968 if (!persis_offset 7969 && i < persis_offset) 7970 lun->pending_sense[i 7971 ].ua_pending |= 7972 CTL_UA_RES_RELEASE; 7973 else if (persis_offset 7974 && i >= persis_offset) 7975 lun->pending_sense[i - 7976 persis_offset].ua_pending |= 7977 CTL_UA_RES_RELEASE; 7978 } 7979 } 7980 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7981 lun->res_type = msg->pr.pr_info.res_type; 7982 if (lun->res_type != SPR_TYPE_WR_EX_AR 7983 && lun->res_type != SPR_TYPE_EX_AC_AR) 7984 lun->pr_res_idx = msg->pr.pr_info.residx; 7985 else 7986 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7987 } 7988 lun->PRGeneration++; 7989 7990} 7991 7992 7993int 7994ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7995{ 7996 int retval; 7997 int isc_retval; 7998 u_int32_t param_len; 7999 struct scsi_per_res_out *cdb; 8000 struct ctl_lun *lun; 8001 struct scsi_per_res_out_parms* param; 8002 struct ctl_softc *softc; 8003 uint32_t residx; 8004 uint64_t res_key, sa_res_key; 8005 uint8_t type; 8006 union ctl_ha_msg persis_io; 8007 int i; 8008 8009 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 8010 8011 retval = CTL_RETVAL_COMPLETE; 8012 8013 softc = control_softc; 8014 8015 cdb = (struct scsi_per_res_out *)ctsio->cdb; 8016 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8017 8018 /* 8019 * We only support whole-LUN scope. The scope & type are ignored for 8020 * register, register and ignore existing key and clear. 8021 * We sometimes ignore scope and type on preempts too!! 8022 * Verify reservation type here as well. 8023 */ 8024 type = cdb->scope_type & SPR_TYPE_MASK; 8025 if ((cdb->action == SPRO_RESERVE) 8026 || (cdb->action == SPRO_RELEASE)) { 8027 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 8028 ctl_set_invalid_field(/*ctsio*/ ctsio, 8029 /*sks_valid*/ 1, 8030 /*command*/ 1, 8031 /*field*/ 2, 8032 /*bit_valid*/ 1, 8033 /*bit*/ 4); 8034 ctl_done((union ctl_io *)ctsio); 8035 return (CTL_RETVAL_COMPLETE); 8036 } 8037 8038 if (type>8 || type==2 || type==4 || type==0) { 8039 ctl_set_invalid_field(/*ctsio*/ ctsio, 8040 /*sks_valid*/ 1, 8041 /*command*/ 1, 8042 /*field*/ 2, 8043 /*bit_valid*/ 1, 8044 /*bit*/ 0); 8045 ctl_done((union ctl_io *)ctsio); 8046 return (CTL_RETVAL_COMPLETE); 8047 } 8048 } 8049 8050 switch (cdb->action & SPRO_ACTION_MASK) { 8051 case SPRO_REGISTER: 8052 case SPRO_RESERVE: 8053 case SPRO_RELEASE: 8054 case SPRO_CLEAR: 8055 case SPRO_PREEMPT: 8056 case SPRO_REG_IGNO: 8057 break; 8058 case SPRO_REG_MOVE: 8059 case SPRO_PRE_ABO: 8060 default: 8061 ctl_set_invalid_field(/*ctsio*/ ctsio, 8062 /*sks_valid*/ 1, 8063 /*command*/ 1, 8064 /*field*/ 1, 8065 /*bit_valid*/ 1, 8066 /*bit*/ 0); 8067 ctl_done((union ctl_io *)ctsio); 8068 return (CTL_RETVAL_COMPLETE); 8069 break; /* NOTREACHED */ 8070 } 8071 8072 param_len = scsi_4btoul(cdb->length); 8073 8074 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 8075 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 8076 ctsio->kern_data_len = param_len; 8077 ctsio->kern_total_len = param_len; 8078 ctsio->kern_data_resid = 0; 8079 ctsio->kern_rel_offset = 0; 8080 ctsio->kern_sg_entries = 0; 8081 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 8082 ctsio->be_move_done = ctl_config_move_done; 8083 ctl_datamove((union ctl_io *)ctsio); 8084 8085 return (CTL_RETVAL_COMPLETE); 8086 } 8087 8088 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 8089 8090 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8091 res_key = scsi_8btou64(param->res_key.key); 8092 sa_res_key = scsi_8btou64(param->serv_act_res_key); 8093 8094 /* 8095 * Validate the reservation key here except for SPRO_REG_IGNO 8096 * This must be done for all other service actions 8097 */ 8098 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8099 mtx_lock(&lun->lun_lock); 8100 if (lun->per_res[residx].registered) { 8101 if (memcmp(param->res_key.key, 8102 lun->per_res[residx].res_key.key, 8103 ctl_min(sizeof(param->res_key), 8104 sizeof(lun->per_res[residx].res_key))) != 0) { 8105 /* 8106 * The current key passed in doesn't match 8107 * the one the initiator previously 8108 * registered. 8109 */ 8110 mtx_unlock(&lun->lun_lock); 8111 free(ctsio->kern_data_ptr, M_CTL); 8112 ctl_set_reservation_conflict(ctsio); 8113 ctl_done((union ctl_io *)ctsio); 8114 return (CTL_RETVAL_COMPLETE); 8115 } 8116 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8117 /* 8118 * We are not registered 8119 */ 8120 mtx_unlock(&lun->lun_lock); 8121 free(ctsio->kern_data_ptr, M_CTL); 8122 ctl_set_reservation_conflict(ctsio); 8123 ctl_done((union ctl_io *)ctsio); 8124 return (CTL_RETVAL_COMPLETE); 8125 } else if (res_key != 0) { 8126 /* 8127 * We are not registered and trying to register but 8128 * the register key isn't zero. 8129 */ 8130 mtx_unlock(&lun->lun_lock); 8131 free(ctsio->kern_data_ptr, M_CTL); 8132 ctl_set_reservation_conflict(ctsio); 8133 ctl_done((union ctl_io *)ctsio); 8134 return (CTL_RETVAL_COMPLETE); 8135 } 8136 mtx_unlock(&lun->lun_lock); 8137 } 8138 8139 switch (cdb->action & SPRO_ACTION_MASK) { 8140 case SPRO_REGISTER: 8141 case SPRO_REG_IGNO: { 8142 8143#if 0 8144 printf("Registration received\n"); 8145#endif 8146 8147 /* 8148 * We don't support any of these options, as we report in 8149 * the read capabilities request (see 8150 * ctl_persistent_reserve_in(), above). 8151 */ 8152 if ((param->flags & SPR_SPEC_I_PT) 8153 || (param->flags & SPR_ALL_TG_PT) 8154 || (param->flags & SPR_APTPL)) { 8155 int bit_ptr; 8156 8157 if (param->flags & SPR_APTPL) 8158 bit_ptr = 0; 8159 else if (param->flags & SPR_ALL_TG_PT) 8160 bit_ptr = 2; 8161 else /* SPR_SPEC_I_PT */ 8162 bit_ptr = 3; 8163 8164 free(ctsio->kern_data_ptr, M_CTL); 8165 ctl_set_invalid_field(ctsio, 8166 /*sks_valid*/ 1, 8167 /*command*/ 0, 8168 /*field*/ 20, 8169 /*bit_valid*/ 1, 8170 /*bit*/ bit_ptr); 8171 ctl_done((union ctl_io *)ctsio); 8172 return (CTL_RETVAL_COMPLETE); 8173 } 8174 8175 mtx_lock(&lun->lun_lock); 8176 8177 /* 8178 * The initiator wants to clear the 8179 * key/unregister. 8180 */ 8181 if (sa_res_key == 0) { 8182 if ((res_key == 0 8183 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8184 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8185 && !lun->per_res[residx].registered)) { 8186 mtx_unlock(&lun->lun_lock); 8187 goto done; 8188 } 8189 8190 lun->per_res[residx].registered = 0; 8191 memset(&lun->per_res[residx].res_key, 8192 0, sizeof(lun->per_res[residx].res_key)); 8193 lun->pr_key_count--; 8194 8195 if (residx == lun->pr_res_idx) { 8196 lun->flags &= ~CTL_LUN_PR_RESERVED; 8197 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8198 8199 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8200 || lun->res_type == SPR_TYPE_EX_AC_RO) 8201 && lun->pr_key_count) { 8202 /* 8203 * If the reservation is a registrants 8204 * only type we need to generate a UA 8205 * for other registered inits. The 8206 * sense code should be RESERVATIONS 8207 * RELEASED 8208 */ 8209 8210 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8211 if (lun->per_res[ 8212 i+persis_offset].registered 8213 == 0) 8214 continue; 8215 lun->pending_sense[i 8216 ].ua_pending |= 8217 CTL_UA_RES_RELEASE; 8218 } 8219 } 8220 lun->res_type = 0; 8221 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8222 if (lun->pr_key_count==0) { 8223 lun->flags &= ~CTL_LUN_PR_RESERVED; 8224 lun->res_type = 0; 8225 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8226 } 8227 } 8228 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8229 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8230 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8231 persis_io.pr.pr_info.residx = residx; 8232 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8233 &persis_io, sizeof(persis_io), 0 )) > 8234 CTL_HA_STATUS_SUCCESS) { 8235 printf("CTL:Persis Out error returned from " 8236 "ctl_ha_msg_send %d\n", isc_retval); 8237 } 8238 } else /* sa_res_key != 0 */ { 8239 8240 /* 8241 * If we aren't registered currently then increment 8242 * the key count and set the registered flag. 8243 */ 8244 if (!lun->per_res[residx].registered) { 8245 lun->pr_key_count++; 8246 lun->per_res[residx].registered = 1; 8247 } 8248 8249 memcpy(&lun->per_res[residx].res_key, 8250 param->serv_act_res_key, 8251 ctl_min(sizeof(param->serv_act_res_key), 8252 sizeof(lun->per_res[residx].res_key))); 8253 8254 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8255 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8256 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8257 persis_io.pr.pr_info.residx = residx; 8258 memcpy(persis_io.pr.pr_info.sa_res_key, 8259 param->serv_act_res_key, 8260 sizeof(param->serv_act_res_key)); 8261 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8262 &persis_io, sizeof(persis_io), 0)) > 8263 CTL_HA_STATUS_SUCCESS) { 8264 printf("CTL:Persis Out error returned from " 8265 "ctl_ha_msg_send %d\n", isc_retval); 8266 } 8267 } 8268 lun->PRGeneration++; 8269 mtx_unlock(&lun->lun_lock); 8270 8271 break; 8272 } 8273 case SPRO_RESERVE: 8274#if 0 8275 printf("Reserve executed type %d\n", type); 8276#endif 8277 mtx_lock(&lun->lun_lock); 8278 if (lun->flags & CTL_LUN_PR_RESERVED) { 8279 /* 8280 * if this isn't the reservation holder and it's 8281 * not a "all registrants" type or if the type is 8282 * different then we have a conflict 8283 */ 8284 if ((lun->pr_res_idx != residx 8285 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8286 || lun->res_type != type) { 8287 mtx_unlock(&lun->lun_lock); 8288 free(ctsio->kern_data_ptr, M_CTL); 8289 ctl_set_reservation_conflict(ctsio); 8290 ctl_done((union ctl_io *)ctsio); 8291 return (CTL_RETVAL_COMPLETE); 8292 } 8293 mtx_unlock(&lun->lun_lock); 8294 } else /* create a reservation */ { 8295 /* 8296 * If it's not an "all registrants" type record 8297 * reservation holder 8298 */ 8299 if (type != SPR_TYPE_WR_EX_AR 8300 && type != SPR_TYPE_EX_AC_AR) 8301 lun->pr_res_idx = residx; /* Res holder */ 8302 else 8303 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8304 8305 lun->flags |= CTL_LUN_PR_RESERVED; 8306 lun->res_type = type; 8307 8308 mtx_unlock(&lun->lun_lock); 8309 8310 /* send msg to other side */ 8311 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8312 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8313 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8314 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8315 persis_io.pr.pr_info.res_type = type; 8316 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8317 &persis_io, sizeof(persis_io), 0)) > 8318 CTL_HA_STATUS_SUCCESS) { 8319 printf("CTL:Persis Out error returned from " 8320 "ctl_ha_msg_send %d\n", isc_retval); 8321 } 8322 } 8323 break; 8324 8325 case SPRO_RELEASE: 8326 mtx_lock(&lun->lun_lock); 8327 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8328 /* No reservation exists return good status */ 8329 mtx_unlock(&lun->lun_lock); 8330 goto done; 8331 } 8332 /* 8333 * Is this nexus a reservation holder? 8334 */ 8335 if (lun->pr_res_idx != residx 8336 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8337 /* 8338 * not a res holder return good status but 8339 * do nothing 8340 */ 8341 mtx_unlock(&lun->lun_lock); 8342 goto done; 8343 } 8344 8345 if (lun->res_type != type) { 8346 mtx_unlock(&lun->lun_lock); 8347 free(ctsio->kern_data_ptr, M_CTL); 8348 ctl_set_illegal_pr_release(ctsio); 8349 ctl_done((union ctl_io *)ctsio); 8350 return (CTL_RETVAL_COMPLETE); 8351 } 8352 8353 /* okay to release */ 8354 lun->flags &= ~CTL_LUN_PR_RESERVED; 8355 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8356 lun->res_type = 0; 8357 8358 /* 8359 * if this isn't an exclusive access 8360 * res generate UA for all other 8361 * registrants. 8362 */ 8363 if (type != SPR_TYPE_EX_AC 8364 && type != SPR_TYPE_WR_EX) { 8365 /* 8366 * temporarily unregister so we don't generate UA 8367 */ 8368 lun->per_res[residx].registered = 0; 8369 8370 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8371 if (lun->per_res[i+persis_offset].registered 8372 == 0) 8373 continue; 8374 lun->pending_sense[i].ua_pending |= 8375 CTL_UA_RES_RELEASE; 8376 } 8377 8378 lun->per_res[residx].registered = 1; 8379 } 8380 mtx_unlock(&lun->lun_lock); 8381 /* Send msg to other side */ 8382 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8383 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8384 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8385 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8386 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8387 printf("CTL:Persis Out error returned from " 8388 "ctl_ha_msg_send %d\n", isc_retval); 8389 } 8390 break; 8391 8392 case SPRO_CLEAR: 8393 /* send msg to other side */ 8394 8395 mtx_lock(&lun->lun_lock); 8396 lun->flags &= ~CTL_LUN_PR_RESERVED; 8397 lun->res_type = 0; 8398 lun->pr_key_count = 0; 8399 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8400 8401 8402 memset(&lun->per_res[residx].res_key, 8403 0, sizeof(lun->per_res[residx].res_key)); 8404 lun->per_res[residx].registered = 0; 8405 8406 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8407 if (lun->per_res[i].registered) { 8408 if (!persis_offset && i < CTL_MAX_INITIATORS) 8409 lun->pending_sense[i].ua_pending |= 8410 CTL_UA_RES_PREEMPT; 8411 else if (persis_offset && i >= persis_offset) 8412 lun->pending_sense[i-persis_offset 8413 ].ua_pending |= CTL_UA_RES_PREEMPT; 8414 8415 memset(&lun->per_res[i].res_key, 8416 0, sizeof(struct scsi_per_res_key)); 8417 lun->per_res[i].registered = 0; 8418 } 8419 lun->PRGeneration++; 8420 mtx_unlock(&lun->lun_lock); 8421 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8422 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8423 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8424 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8425 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8426 printf("CTL:Persis Out error returned from " 8427 "ctl_ha_msg_send %d\n", isc_retval); 8428 } 8429 break; 8430 8431 case SPRO_PREEMPT: { 8432 int nretval; 8433 8434 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8435 residx, ctsio, cdb, param); 8436 if (nretval != 0) 8437 return (CTL_RETVAL_COMPLETE); 8438 break; 8439 } 8440 case SPRO_REG_MOVE: 8441 case SPRO_PRE_ABO: 8442 default: 8443 free(ctsio->kern_data_ptr, M_CTL); 8444 ctl_set_invalid_field(/*ctsio*/ ctsio, 8445 /*sks_valid*/ 1, 8446 /*command*/ 1, 8447 /*field*/ 1, 8448 /*bit_valid*/ 1, 8449 /*bit*/ 0); 8450 ctl_done((union ctl_io *)ctsio); 8451 return (CTL_RETVAL_COMPLETE); 8452 break; /* NOTREACHED */ 8453 } 8454 8455done: 8456 free(ctsio->kern_data_ptr, M_CTL); 8457 ctl_set_success(ctsio); 8458 ctl_done((union ctl_io *)ctsio); 8459 8460 return (retval); 8461} 8462 8463/* 8464 * This routine is for handling a message from the other SC pertaining to 8465 * persistent reserve out. All the error checking will have been done 8466 * so only perorming the action need be done here to keep the two 8467 * in sync. 8468 */ 8469static void 8470ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8471{ 8472 struct ctl_lun *lun; 8473 struct ctl_softc *softc; 8474 int i; 8475 uint32_t targ_lun; 8476 8477 softc = control_softc; 8478 8479 targ_lun = msg->hdr.nexus.targ_mapped_lun; 8480 lun = softc->ctl_luns[targ_lun]; 8481 mtx_lock(&lun->lun_lock); 8482 switch(msg->pr.pr_info.action) { 8483 case CTL_PR_REG_KEY: 8484 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8485 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8486 lun->pr_key_count++; 8487 } 8488 lun->PRGeneration++; 8489 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8490 msg->pr.pr_info.sa_res_key, 8491 sizeof(struct scsi_per_res_key)); 8492 break; 8493 8494 case CTL_PR_UNREG_KEY: 8495 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8496 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8497 0, sizeof(struct scsi_per_res_key)); 8498 lun->pr_key_count--; 8499 8500 /* XXX Need to see if the reservation has been released */ 8501 /* if so do we need to generate UA? */ 8502 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8503 lun->flags &= ~CTL_LUN_PR_RESERVED; 8504 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8505 8506 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8507 || lun->res_type == SPR_TYPE_EX_AC_RO) 8508 && lun->pr_key_count) { 8509 /* 8510 * If the reservation is a registrants 8511 * only type we need to generate a UA 8512 * for other registered inits. The 8513 * sense code should be RESERVATIONS 8514 * RELEASED 8515 */ 8516 8517 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8518 if (lun->per_res[i+ 8519 persis_offset].registered == 0) 8520 continue; 8521 8522 lun->pending_sense[i 8523 ].ua_pending |= 8524 CTL_UA_RES_RELEASE; 8525 } 8526 } 8527 lun->res_type = 0; 8528 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8529 if (lun->pr_key_count==0) { 8530 lun->flags &= ~CTL_LUN_PR_RESERVED; 8531 lun->res_type = 0; 8532 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8533 } 8534 } 8535 lun->PRGeneration++; 8536 break; 8537 8538 case CTL_PR_RESERVE: 8539 lun->flags |= CTL_LUN_PR_RESERVED; 8540 lun->res_type = msg->pr.pr_info.res_type; 8541 lun->pr_res_idx = msg->pr.pr_info.residx; 8542 8543 break; 8544 8545 case CTL_PR_RELEASE: 8546 /* 8547 * if this isn't an exclusive access res generate UA for all 8548 * other registrants. 8549 */ 8550 if (lun->res_type != SPR_TYPE_EX_AC 8551 && lun->res_type != SPR_TYPE_WR_EX) { 8552 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8553 if (lun->per_res[i+persis_offset].registered) 8554 lun->pending_sense[i].ua_pending |= 8555 CTL_UA_RES_RELEASE; 8556 } 8557 8558 lun->flags &= ~CTL_LUN_PR_RESERVED; 8559 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8560 lun->res_type = 0; 8561 break; 8562 8563 case CTL_PR_PREEMPT: 8564 ctl_pro_preempt_other(lun, msg); 8565 break; 8566 case CTL_PR_CLEAR: 8567 lun->flags &= ~CTL_LUN_PR_RESERVED; 8568 lun->res_type = 0; 8569 lun->pr_key_count = 0; 8570 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8571 8572 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8573 if (lun->per_res[i].registered == 0) 8574 continue; 8575 if (!persis_offset 8576 && i < CTL_MAX_INITIATORS) 8577 lun->pending_sense[i].ua_pending |= 8578 CTL_UA_RES_PREEMPT; 8579 else if (persis_offset 8580 && i >= persis_offset) 8581 lun->pending_sense[i-persis_offset].ua_pending|= 8582 CTL_UA_RES_PREEMPT; 8583 memset(&lun->per_res[i].res_key, 0, 8584 sizeof(struct scsi_per_res_key)); 8585 lun->per_res[i].registered = 0; 8586 } 8587 lun->PRGeneration++; 8588 break; 8589 } 8590 8591 mtx_unlock(&lun->lun_lock); 8592} 8593 8594int 8595ctl_read_write(struct ctl_scsiio *ctsio) 8596{ 8597 struct ctl_lun *lun; 8598 struct ctl_lba_len_flags *lbalen; 8599 uint64_t lba; 8600 uint32_t num_blocks; 8601 int reladdr, fua, dpo, ebp; 8602 int retval; 8603 int isread; 8604 8605 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8606 8607 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8608 8609 reladdr = 0; 8610 fua = 0; 8611 dpo = 0; 8612 ebp = 0; 8613 8614 retval = CTL_RETVAL_COMPLETE; 8615 8616 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8617 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8618 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8619 uint32_t residx; 8620 8621 /* 8622 * XXX KDM need a lock here. 8623 */ 8624 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8625 if ((lun->res_type == SPR_TYPE_EX_AC 8626 && residx != lun->pr_res_idx) 8627 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8628 || lun->res_type == SPR_TYPE_EX_AC_AR) 8629 && !lun->per_res[residx].registered)) { 8630 ctl_set_reservation_conflict(ctsio); 8631 ctl_done((union ctl_io *)ctsio); 8632 return (CTL_RETVAL_COMPLETE); 8633 } 8634 } 8635 8636 switch (ctsio->cdb[0]) { 8637 case READ_6: 8638 case WRITE_6: { 8639 struct scsi_rw_6 *cdb; 8640 8641 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8642 8643 lba = scsi_3btoul(cdb->addr); 8644 /* only 5 bits are valid in the most significant address byte */ 8645 lba &= 0x1fffff; 8646 num_blocks = cdb->length; 8647 /* 8648 * This is correct according to SBC-2. 8649 */ 8650 if (num_blocks == 0) 8651 num_blocks = 256; 8652 break; 8653 } 8654 case READ_10: 8655 case WRITE_10: { 8656 struct scsi_rw_10 *cdb; 8657 8658 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8659 8660 if (cdb->byte2 & SRW10_RELADDR) 8661 reladdr = 1; 8662 if (cdb->byte2 & SRW10_FUA) 8663 fua = 1; 8664 if (cdb->byte2 & SRW10_DPO) 8665 dpo = 1; 8666 8667 if ((cdb->opcode == WRITE_10) 8668 && (cdb->byte2 & SRW10_EBP)) 8669 ebp = 1; 8670 8671 lba = scsi_4btoul(cdb->addr); 8672 num_blocks = scsi_2btoul(cdb->length); 8673 break; 8674 } 8675 case WRITE_VERIFY_10: { 8676 struct scsi_write_verify_10 *cdb; 8677 8678 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8679 8680 /* 8681 * XXX KDM we should do actual write verify support at some 8682 * point. This is obviously fake, we're just translating 8683 * things to a write. So we don't even bother checking the 8684 * BYTCHK field, since we don't do any verification. If 8685 * the user asks for it, we'll just pretend we did it. 8686 */ 8687 if (cdb->byte2 & SWV_DPO) 8688 dpo = 1; 8689 8690 lba = scsi_4btoul(cdb->addr); 8691 num_blocks = scsi_2btoul(cdb->length); 8692 break; 8693 } 8694 case READ_12: 8695 case WRITE_12: { 8696 struct scsi_rw_12 *cdb; 8697 8698 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8699 8700 if (cdb->byte2 & SRW12_RELADDR) 8701 reladdr = 1; 8702 if (cdb->byte2 & SRW12_FUA) 8703 fua = 1; 8704 if (cdb->byte2 & SRW12_DPO) 8705 dpo = 1; 8706 lba = scsi_4btoul(cdb->addr); 8707 num_blocks = scsi_4btoul(cdb->length); 8708 break; 8709 } 8710 case WRITE_VERIFY_12: { 8711 struct scsi_write_verify_12 *cdb; 8712 8713 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8714 8715 if (cdb->byte2 & SWV_DPO) 8716 dpo = 1; 8717 8718 lba = scsi_4btoul(cdb->addr); 8719 num_blocks = scsi_4btoul(cdb->length); 8720 8721 break; 8722 } 8723 case READ_16: 8724 case WRITE_16: { 8725 struct scsi_rw_16 *cdb; 8726 8727 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8728 8729 if (cdb->byte2 & SRW12_RELADDR) 8730 reladdr = 1; 8731 if (cdb->byte2 & SRW12_FUA) 8732 fua = 1; 8733 if (cdb->byte2 & SRW12_DPO) 8734 dpo = 1; 8735 8736 lba = scsi_8btou64(cdb->addr); 8737 num_blocks = scsi_4btoul(cdb->length); 8738 break; 8739 } 8740 case WRITE_VERIFY_16: { 8741 struct scsi_write_verify_16 *cdb; 8742 8743 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8744 8745 if (cdb->byte2 & SWV_DPO) 8746 dpo = 1; 8747 8748 lba = scsi_8btou64(cdb->addr); 8749 num_blocks = scsi_4btoul(cdb->length); 8750 break; 8751 } 8752 default: 8753 /* 8754 * We got a command we don't support. This shouldn't 8755 * happen, commands should be filtered out above us. 8756 */ 8757 ctl_set_invalid_opcode(ctsio); 8758 ctl_done((union ctl_io *)ctsio); 8759 8760 return (CTL_RETVAL_COMPLETE); 8761 break; /* NOTREACHED */ 8762 } 8763 8764 /* 8765 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8766 * interesting for us, but if RAIDCore is in write-back mode, 8767 * getting it to do write-through for a particular transaction may 8768 * not be possible. 8769 */ 8770 /* 8771 * We don't support relative addressing. That also requires 8772 * supporting linked commands, which we don't do. 8773 */ 8774 if (reladdr != 0) { 8775 ctl_set_invalid_field(ctsio, 8776 /*sks_valid*/ 1, 8777 /*command*/ 1, 8778 /*field*/ 1, 8779 /*bit_valid*/ 1, 8780 /*bit*/ 0); 8781 ctl_done((union ctl_io *)ctsio); 8782 return (CTL_RETVAL_COMPLETE); 8783 } 8784 8785 /* 8786 * The first check is to make sure we're in bounds, the second 8787 * check is to catch wrap-around problems. If the lba + num blocks 8788 * is less than the lba, then we've wrapped around and the block 8789 * range is invalid anyway. 8790 */ 8791 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8792 || ((lba + num_blocks) < lba)) { 8793 ctl_set_lba_out_of_range(ctsio); 8794 ctl_done((union ctl_io *)ctsio); 8795 return (CTL_RETVAL_COMPLETE); 8796 } 8797 8798 /* 8799 * According to SBC-3, a transfer length of 0 is not an error. 8800 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8801 * translates to 256 blocks for those commands. 8802 */ 8803 if (num_blocks == 0) { 8804 ctl_set_success(ctsio); 8805 ctl_done((union ctl_io *)ctsio); 8806 return (CTL_RETVAL_COMPLETE); 8807 } 8808 8809 lbalen = (struct ctl_lba_len_flags *) 8810 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8811 lbalen->lba = lba; 8812 lbalen->len = num_blocks; 8813 lbalen->flags = isread ? CTL_LLF_READ : CTL_LLF_WRITE; 8814 8815 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 8816 ctsio->kern_rel_offset = 0; 8817 8818 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8819 8820 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8821 8822 return (retval); 8823} 8824 8825static int 8826ctl_cnw_cont(union ctl_io *io) 8827{ 8828 struct ctl_scsiio *ctsio; 8829 struct ctl_lun *lun; 8830 struct ctl_lba_len_flags *lbalen; 8831 int retval; 8832 8833 ctsio = &io->scsiio; 8834 ctsio->io_hdr.status = CTL_STATUS_NONE; 8835 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_CONT; 8836 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8837 lbalen = (struct ctl_lba_len_flags *) 8838 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8839 lbalen->flags = CTL_LLF_WRITE; 8840 8841 CTL_DEBUG_PRINT(("ctl_cnw_cont: calling data_submit()\n")); 8842 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8843 return (retval); 8844} 8845 8846int 8847ctl_cnw(struct ctl_scsiio *ctsio) 8848{ 8849 struct ctl_lun *lun; 8850 struct ctl_lba_len_flags *lbalen; 8851 uint64_t lba; 8852 uint32_t num_blocks; 8853 int fua, dpo; 8854 int retval; 8855 8856 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8857 8858 CTL_DEBUG_PRINT(("ctl_cnw: command: %#x\n", ctsio->cdb[0])); 8859 8860 fua = 0; 8861 dpo = 0; 8862 8863 retval = CTL_RETVAL_COMPLETE; 8864 8865 switch (ctsio->cdb[0]) { 8866 case COMPARE_AND_WRITE: { 8867 struct scsi_compare_and_write *cdb; 8868 8869 cdb = (struct scsi_compare_and_write *)ctsio->cdb; 8870 8871 if (cdb->byte2 & SRW10_FUA) 8872 fua = 1; 8873 if (cdb->byte2 & SRW10_DPO) 8874 dpo = 1; 8875 lba = scsi_8btou64(cdb->addr); 8876 num_blocks = cdb->length; 8877 break; 8878 } 8879 default: 8880 /* 8881 * We got a command we don't support. This shouldn't 8882 * happen, commands should be filtered out above us. 8883 */ 8884 ctl_set_invalid_opcode(ctsio); 8885 ctl_done((union ctl_io *)ctsio); 8886 8887 return (CTL_RETVAL_COMPLETE); 8888 break; /* NOTREACHED */ 8889 } 8890 8891 /* 8892 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8893 * interesting for us, but if RAIDCore is in write-back mode, 8894 * getting it to do write-through for a particular transaction may 8895 * not be possible. 8896 */ 8897 8898 /* 8899 * The first check is to make sure we're in bounds, the second 8900 * check is to catch wrap-around problems. If the lba + num blocks 8901 * is less than the lba, then we've wrapped around and the block 8902 * range is invalid anyway. 8903 */ 8904 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8905 || ((lba + num_blocks) < lba)) { 8906 ctl_set_lba_out_of_range(ctsio); 8907 ctl_done((union ctl_io *)ctsio); 8908 return (CTL_RETVAL_COMPLETE); 8909 } 8910 8911 /* 8912 * According to SBC-3, a transfer length of 0 is not an error. 8913 */ 8914 if (num_blocks == 0) { 8915 ctl_set_success(ctsio); 8916 ctl_done((union ctl_io *)ctsio); 8917 return (CTL_RETVAL_COMPLETE); 8918 } 8919 8920 ctsio->kern_total_len = 2 * num_blocks * lun->be_lun->blocksize; 8921 ctsio->kern_rel_offset = 0; 8922 8923 /* 8924 * Set the IO_CONT flag, so that if this I/O gets passed to 8925 * ctl_data_submit_done(), it'll get passed back to 8926 * ctl_ctl_cnw_cont() for further processing. 8927 */ 8928 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 8929 ctsio->io_cont = ctl_cnw_cont; 8930 8931 lbalen = (struct ctl_lba_len_flags *) 8932 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8933 lbalen->lba = lba; 8934 lbalen->len = num_blocks; 8935 lbalen->flags = CTL_LLF_COMPARE; 8936 8937 CTL_DEBUG_PRINT(("ctl_cnw: calling data_submit()\n")); 8938 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8939 return (retval); 8940} 8941 8942int 8943ctl_verify(struct ctl_scsiio *ctsio) 8944{ 8945 struct ctl_lun *lun; 8946 struct ctl_lba_len_flags *lbalen; 8947 uint64_t lba; 8948 uint32_t num_blocks; 8949 int bytchk, dpo; 8950 int retval; 8951 8952 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8953 8954 CTL_DEBUG_PRINT(("ctl_verify: command: %#x\n", ctsio->cdb[0])); 8955 8956 bytchk = 0; 8957 dpo = 0; 8958 retval = CTL_RETVAL_COMPLETE; 8959 8960 switch (ctsio->cdb[0]) { 8961 case VERIFY_10: { 8962 struct scsi_verify_10 *cdb; 8963 8964 cdb = (struct scsi_verify_10 *)ctsio->cdb; 8965 if (cdb->byte2 & SVFY_BYTCHK) 8966 bytchk = 1; 8967 if (cdb->byte2 & SVFY_DPO) 8968 dpo = 1; 8969 lba = scsi_4btoul(cdb->addr); 8970 num_blocks = scsi_2btoul(cdb->length); 8971 break; 8972 } 8973 case VERIFY_12: { 8974 struct scsi_verify_12 *cdb; 8975 8976 cdb = (struct scsi_verify_12 *)ctsio->cdb; 8977 if (cdb->byte2 & SVFY_BYTCHK) 8978 bytchk = 1; 8979 if (cdb->byte2 & SVFY_DPO) 8980 dpo = 1; 8981 lba = scsi_4btoul(cdb->addr); 8982 num_blocks = scsi_4btoul(cdb->length); 8983 break; 8984 } 8985 case VERIFY_16: { 8986 struct scsi_rw_16 *cdb; 8987 8988 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8989 if (cdb->byte2 & SVFY_BYTCHK) 8990 bytchk = 1; 8991 if (cdb->byte2 & SVFY_DPO) 8992 dpo = 1; 8993 lba = scsi_8btou64(cdb->addr); 8994 num_blocks = scsi_4btoul(cdb->length); 8995 break; 8996 } 8997 default: 8998 /* 8999 * We got a command we don't support. This shouldn't 9000 * happen, commands should be filtered out above us. 9001 */ 9002 ctl_set_invalid_opcode(ctsio); 9003 ctl_done((union ctl_io *)ctsio); 9004 return (CTL_RETVAL_COMPLETE); 9005 } 9006 9007 /* 9008 * The first check is to make sure we're in bounds, the second 9009 * check is to catch wrap-around problems. If the lba + num blocks 9010 * is less than the lba, then we've wrapped around and the block 9011 * range is invalid anyway. 9012 */ 9013 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9014 || ((lba + num_blocks) < lba)) { 9015 ctl_set_lba_out_of_range(ctsio); 9016 ctl_done((union ctl_io *)ctsio); 9017 return (CTL_RETVAL_COMPLETE); 9018 } 9019 9020 /* 9021 * According to SBC-3, a transfer length of 0 is not an error. 9022 */ 9023 if (num_blocks == 0) { 9024 ctl_set_success(ctsio); 9025 ctl_done((union ctl_io *)ctsio); 9026 return (CTL_RETVAL_COMPLETE); 9027 } 9028 9029 lbalen = (struct ctl_lba_len_flags *) 9030 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9031 lbalen->lba = lba; 9032 lbalen->len = num_blocks; 9033 if (bytchk) { 9034 lbalen->flags = CTL_LLF_COMPARE; 9035 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 9036 } else { 9037 lbalen->flags = CTL_LLF_VERIFY; 9038 ctsio->kern_total_len = 0; 9039 } 9040 ctsio->kern_rel_offset = 0; 9041 9042 CTL_DEBUG_PRINT(("ctl_verify: calling data_submit()\n")); 9043 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9044 return (retval); 9045} 9046 9047int 9048ctl_report_luns(struct ctl_scsiio *ctsio) 9049{ 9050 struct scsi_report_luns *cdb; 9051 struct scsi_report_luns_data *lun_data; 9052 struct ctl_lun *lun, *request_lun; 9053 int num_luns, retval; 9054 uint32_t alloc_len, lun_datalen; 9055 int num_filled, well_known; 9056 uint32_t initidx, targ_lun_id, lun_id; 9057 9058 retval = CTL_RETVAL_COMPLETE; 9059 well_known = 0; 9060 9061 cdb = (struct scsi_report_luns *)ctsio->cdb; 9062 9063 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 9064 9065 mtx_lock(&control_softc->ctl_lock); 9066 num_luns = control_softc->num_luns; 9067 mtx_unlock(&control_softc->ctl_lock); 9068 9069 switch (cdb->select_report) { 9070 case RPL_REPORT_DEFAULT: 9071 case RPL_REPORT_ALL: 9072 break; 9073 case RPL_REPORT_WELLKNOWN: 9074 well_known = 1; 9075 num_luns = 0; 9076 break; 9077 default: 9078 ctl_set_invalid_field(ctsio, 9079 /*sks_valid*/ 1, 9080 /*command*/ 1, 9081 /*field*/ 2, 9082 /*bit_valid*/ 0, 9083 /*bit*/ 0); 9084 ctl_done((union ctl_io *)ctsio); 9085 return (retval); 9086 break; /* NOTREACHED */ 9087 } 9088 9089 alloc_len = scsi_4btoul(cdb->length); 9090 /* 9091 * The initiator has to allocate at least 16 bytes for this request, 9092 * so he can at least get the header and the first LUN. Otherwise 9093 * we reject the request (per SPC-3 rev 14, section 6.21). 9094 */ 9095 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 9096 sizeof(struct scsi_report_luns_lundata))) { 9097 ctl_set_invalid_field(ctsio, 9098 /*sks_valid*/ 1, 9099 /*command*/ 1, 9100 /*field*/ 6, 9101 /*bit_valid*/ 0, 9102 /*bit*/ 0); 9103 ctl_done((union ctl_io *)ctsio); 9104 return (retval); 9105 } 9106 9107 request_lun = (struct ctl_lun *) 9108 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9109 9110 lun_datalen = sizeof(*lun_data) + 9111 (num_luns * sizeof(struct scsi_report_luns_lundata)); 9112 9113 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 9114 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 9115 ctsio->kern_sg_entries = 0; 9116 9117 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9118 9119 mtx_lock(&control_softc->ctl_lock); 9120 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 9121 lun_id = targ_lun_id; 9122 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 9123 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 9124 if (lun_id >= CTL_MAX_LUNS) 9125 continue; 9126 lun = control_softc->ctl_luns[lun_id]; 9127 if (lun == NULL) 9128 continue; 9129 9130 if (targ_lun_id <= 0xff) { 9131 /* 9132 * Peripheral addressing method, bus number 0. 9133 */ 9134 lun_data->luns[num_filled].lundata[0] = 9135 RPL_LUNDATA_ATYP_PERIPH; 9136 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 9137 num_filled++; 9138 } else if (targ_lun_id <= 0x3fff) { 9139 /* 9140 * Flat addressing method. 9141 */ 9142 lun_data->luns[num_filled].lundata[0] = 9143 RPL_LUNDATA_ATYP_FLAT | 9144 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 9145#ifdef OLDCTLHEADERS 9146 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 9147 (targ_lun_id & SRLD_BUS_LUN_MASK); 9148#endif 9149 lun_data->luns[num_filled].lundata[1] = 9150#ifdef OLDCTLHEADERS 9151 targ_lun_id >> SRLD_BUS_LUN_BITS; 9152#endif 9153 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 9154 num_filled++; 9155 } else { 9156 printf("ctl_report_luns: bogus LUN number %jd, " 9157 "skipping\n", (intmax_t)targ_lun_id); 9158 } 9159 /* 9160 * According to SPC-3, rev 14 section 6.21: 9161 * 9162 * "The execution of a REPORT LUNS command to any valid and 9163 * installed logical unit shall clear the REPORTED LUNS DATA 9164 * HAS CHANGED unit attention condition for all logical 9165 * units of that target with respect to the requesting 9166 * initiator. A valid and installed logical unit is one 9167 * having a PERIPHERAL QUALIFIER of 000b in the standard 9168 * INQUIRY data (see 6.4.2)." 9169 * 9170 * If request_lun is NULL, the LUN this report luns command 9171 * was issued to is either disabled or doesn't exist. In that 9172 * case, we shouldn't clear any pending lun change unit 9173 * attention. 9174 */ 9175 if (request_lun != NULL) { 9176 mtx_lock(&lun->lun_lock); 9177 lun->pending_sense[initidx].ua_pending &= 9178 ~CTL_UA_LUN_CHANGE; 9179 mtx_unlock(&lun->lun_lock); 9180 } 9181 } 9182 mtx_unlock(&control_softc->ctl_lock); 9183 9184 /* 9185 * It's quite possible that we've returned fewer LUNs than we allocated 9186 * space for. Trim it. 9187 */ 9188 lun_datalen = sizeof(*lun_data) + 9189 (num_filled * sizeof(struct scsi_report_luns_lundata)); 9190 9191 if (lun_datalen < alloc_len) { 9192 ctsio->residual = alloc_len - lun_datalen; 9193 ctsio->kern_data_len = lun_datalen; 9194 ctsio->kern_total_len = lun_datalen; 9195 } else { 9196 ctsio->residual = 0; 9197 ctsio->kern_data_len = alloc_len; 9198 ctsio->kern_total_len = alloc_len; 9199 } 9200 ctsio->kern_data_resid = 0; 9201 ctsio->kern_rel_offset = 0; 9202 ctsio->kern_sg_entries = 0; 9203 9204 /* 9205 * We set this to the actual data length, regardless of how much 9206 * space we actually have to return results. If the user looks at 9207 * this value, he'll know whether or not he allocated enough space 9208 * and reissue the command if necessary. We don't support well 9209 * known logical units, so if the user asks for that, return none. 9210 */ 9211 scsi_ulto4b(lun_datalen - 8, lun_data->length); 9212 9213 /* 9214 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 9215 * this request. 9216 */ 9217 ctsio->scsi_status = SCSI_STATUS_OK; 9218 9219 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9220 ctsio->be_move_done = ctl_config_move_done; 9221 ctl_datamove((union ctl_io *)ctsio); 9222 9223 return (retval); 9224} 9225 9226int 9227ctl_request_sense(struct ctl_scsiio *ctsio) 9228{ 9229 struct scsi_request_sense *cdb; 9230 struct scsi_sense_data *sense_ptr; 9231 struct ctl_lun *lun; 9232 uint32_t initidx; 9233 int have_error; 9234 scsi_sense_data_type sense_format; 9235 9236 cdb = (struct scsi_request_sense *)ctsio->cdb; 9237 9238 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9239 9240 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9241 9242 /* 9243 * Determine which sense format the user wants. 9244 */ 9245 if (cdb->byte2 & SRS_DESC) 9246 sense_format = SSD_TYPE_DESC; 9247 else 9248 sense_format = SSD_TYPE_FIXED; 9249 9250 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9251 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9252 ctsio->kern_sg_entries = 0; 9253 9254 /* 9255 * struct scsi_sense_data, which is currently set to 256 bytes, is 9256 * larger than the largest allowed value for the length field in the 9257 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9258 */ 9259 ctsio->residual = 0; 9260 ctsio->kern_data_len = cdb->length; 9261 ctsio->kern_total_len = cdb->length; 9262 9263 ctsio->kern_data_resid = 0; 9264 ctsio->kern_rel_offset = 0; 9265 ctsio->kern_sg_entries = 0; 9266 9267 /* 9268 * If we don't have a LUN, we don't have any pending sense. 9269 */ 9270 if (lun == NULL) 9271 goto no_sense; 9272 9273 have_error = 0; 9274 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9275 /* 9276 * Check for pending sense, and then for pending unit attentions. 9277 * Pending sense gets returned first, then pending unit attentions. 9278 */ 9279 mtx_lock(&lun->lun_lock); 9280 if (ctl_is_set(lun->have_ca, initidx)) { 9281 scsi_sense_data_type stored_format; 9282 9283 /* 9284 * Check to see which sense format was used for the stored 9285 * sense data. 9286 */ 9287 stored_format = scsi_sense_type( 9288 &lun->pending_sense[initidx].sense); 9289 9290 /* 9291 * If the user requested a different sense format than the 9292 * one we stored, then we need to convert it to the other 9293 * format. If we're going from descriptor to fixed format 9294 * sense data, we may lose things in translation, depending 9295 * on what options were used. 9296 * 9297 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9298 * for some reason we'll just copy it out as-is. 9299 */ 9300 if ((stored_format == SSD_TYPE_FIXED) 9301 && (sense_format == SSD_TYPE_DESC)) 9302 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9303 &lun->pending_sense[initidx].sense, 9304 (struct scsi_sense_data_desc *)sense_ptr); 9305 else if ((stored_format == SSD_TYPE_DESC) 9306 && (sense_format == SSD_TYPE_FIXED)) 9307 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9308 &lun->pending_sense[initidx].sense, 9309 (struct scsi_sense_data_fixed *)sense_ptr); 9310 else 9311 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9312 ctl_min(sizeof(*sense_ptr), 9313 sizeof(lun->pending_sense[initidx].sense))); 9314 9315 ctl_clear_mask(lun->have_ca, initidx); 9316 have_error = 1; 9317 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9318 ctl_ua_type ua_type; 9319 9320 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9321 sense_ptr, sense_format); 9322 if (ua_type != CTL_UA_NONE) { 9323 have_error = 1; 9324 /* We're reporting this UA, so clear it */ 9325 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9326 } 9327 } 9328 mtx_unlock(&lun->lun_lock); 9329 9330 /* 9331 * We already have a pending error, return it. 9332 */ 9333 if (have_error != 0) { 9334 /* 9335 * We report the SCSI status as OK, since the status of the 9336 * request sense command itself is OK. 9337 */ 9338 ctsio->scsi_status = SCSI_STATUS_OK; 9339 9340 /* 9341 * We report 0 for the sense length, because we aren't doing 9342 * autosense in this case. We're reporting sense as 9343 * parameter data. 9344 */ 9345 ctsio->sense_len = 0; 9346 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9347 ctsio->be_move_done = ctl_config_move_done; 9348 ctl_datamove((union ctl_io *)ctsio); 9349 9350 return (CTL_RETVAL_COMPLETE); 9351 } 9352 9353no_sense: 9354 9355 /* 9356 * No sense information to report, so we report that everything is 9357 * okay. 9358 */ 9359 ctl_set_sense_data(sense_ptr, 9360 lun, 9361 sense_format, 9362 /*current_error*/ 1, 9363 /*sense_key*/ SSD_KEY_NO_SENSE, 9364 /*asc*/ 0x00, 9365 /*ascq*/ 0x00, 9366 SSD_ELEM_NONE); 9367 9368 ctsio->scsi_status = SCSI_STATUS_OK; 9369 9370 /* 9371 * We report 0 for the sense length, because we aren't doing 9372 * autosense in this case. We're reporting sense as parameter data. 9373 */ 9374 ctsio->sense_len = 0; 9375 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9376 ctsio->be_move_done = ctl_config_move_done; 9377 ctl_datamove((union ctl_io *)ctsio); 9378 9379 return (CTL_RETVAL_COMPLETE); 9380} 9381 9382int 9383ctl_tur(struct ctl_scsiio *ctsio) 9384{ 9385 struct ctl_lun *lun; 9386 9387 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9388 9389 CTL_DEBUG_PRINT(("ctl_tur\n")); 9390 9391 if (lun == NULL) 9392 return (-EINVAL); 9393 9394 ctsio->scsi_status = SCSI_STATUS_OK; 9395 ctsio->io_hdr.status = CTL_SUCCESS; 9396 9397 ctl_done((union ctl_io *)ctsio); 9398 9399 return (CTL_RETVAL_COMPLETE); 9400} 9401 9402#ifdef notyet 9403static int 9404ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9405{ 9406 9407} 9408#endif 9409 9410static int 9411ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9412{ 9413 struct scsi_vpd_supported_pages *pages; 9414 int sup_page_size; 9415 struct ctl_lun *lun; 9416 9417 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9418 9419 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9420 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9421 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9422 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9423 ctsio->kern_sg_entries = 0; 9424 9425 if (sup_page_size < alloc_len) { 9426 ctsio->residual = alloc_len - sup_page_size; 9427 ctsio->kern_data_len = sup_page_size; 9428 ctsio->kern_total_len = sup_page_size; 9429 } else { 9430 ctsio->residual = 0; 9431 ctsio->kern_data_len = alloc_len; 9432 ctsio->kern_total_len = alloc_len; 9433 } 9434 ctsio->kern_data_resid = 0; 9435 ctsio->kern_rel_offset = 0; 9436 ctsio->kern_sg_entries = 0; 9437 9438 /* 9439 * The control device is always connected. The disk device, on the 9440 * other hand, may not be online all the time. Need to change this 9441 * to figure out whether the disk device is actually online or not. 9442 */ 9443 if (lun != NULL) 9444 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9445 lun->be_lun->lun_type; 9446 else 9447 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9448 9449 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9450 /* Supported VPD pages */ 9451 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9452 /* Serial Number */ 9453 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9454 /* Device Identification */ 9455 pages->page_list[2] = SVPD_DEVICE_ID; 9456 /* Block limits */ 9457 pages->page_list[3] = SVPD_BLOCK_LIMITS; 9458 /* Logical Block Provisioning */ 9459 pages->page_list[4] = SVPD_LBP; 9460 9461 ctsio->scsi_status = SCSI_STATUS_OK; 9462 9463 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9464 ctsio->be_move_done = ctl_config_move_done; 9465 ctl_datamove((union ctl_io *)ctsio); 9466 9467 return (CTL_RETVAL_COMPLETE); 9468} 9469 9470static int 9471ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9472{ 9473 struct scsi_vpd_unit_serial_number *sn_ptr; 9474 struct ctl_lun *lun; 9475 9476 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9477 9478 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9479 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9480 ctsio->kern_sg_entries = 0; 9481 9482 if (sizeof(*sn_ptr) < alloc_len) { 9483 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9484 ctsio->kern_data_len = sizeof(*sn_ptr); 9485 ctsio->kern_total_len = sizeof(*sn_ptr); 9486 } else { 9487 ctsio->residual = 0; 9488 ctsio->kern_data_len = alloc_len; 9489 ctsio->kern_total_len = alloc_len; 9490 } 9491 ctsio->kern_data_resid = 0; 9492 ctsio->kern_rel_offset = 0; 9493 ctsio->kern_sg_entries = 0; 9494 9495 /* 9496 * The control device is always connected. The disk device, on the 9497 * other hand, may not be online all the time. Need to change this 9498 * to figure out whether the disk device is actually online or not. 9499 */ 9500 if (lun != NULL) 9501 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9502 lun->be_lun->lun_type; 9503 else 9504 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9505 9506 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9507 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9508 /* 9509 * If we don't have a LUN, we just leave the serial number as 9510 * all spaces. 9511 */ 9512 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9513 if (lun != NULL) { 9514 strncpy((char *)sn_ptr->serial_num, 9515 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9516 } 9517 ctsio->scsi_status = SCSI_STATUS_OK; 9518 9519 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9520 ctsio->be_move_done = ctl_config_move_done; 9521 ctl_datamove((union ctl_io *)ctsio); 9522 9523 return (CTL_RETVAL_COMPLETE); 9524} 9525 9526 9527static int 9528ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9529{ 9530 struct scsi_vpd_device_id *devid_ptr; 9531 struct scsi_vpd_id_descriptor *desc, *desc1; 9532 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9533 struct scsi_vpd_id_t10 *t10id; 9534 struct ctl_softc *ctl_softc; 9535 struct ctl_lun *lun; 9536 struct ctl_frontend *fe; 9537 char *val; 9538 int data_len, devid_len; 9539 9540 ctl_softc = control_softc; 9541 9542 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9543 9544 if (fe->devid != NULL) 9545 return ((fe->devid)(ctsio, alloc_len)); 9546 9547 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9548 9549 if (lun == NULL) { 9550 devid_len = CTL_DEVID_MIN_LEN; 9551 } else { 9552 devid_len = max(CTL_DEVID_MIN_LEN, 9553 strnlen(lun->be_lun->device_id, CTL_DEVID_LEN)); 9554 } 9555 9556 data_len = sizeof(struct scsi_vpd_device_id) + 9557 sizeof(struct scsi_vpd_id_descriptor) + 9558 sizeof(struct scsi_vpd_id_t10) + devid_len + 9559 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9560 sizeof(struct scsi_vpd_id_descriptor) + 9561 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9562 sizeof(struct scsi_vpd_id_descriptor) + 9563 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9564 9565 ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO); 9566 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9567 ctsio->kern_sg_entries = 0; 9568 9569 if (data_len < alloc_len) { 9570 ctsio->residual = alloc_len - data_len; 9571 ctsio->kern_data_len = data_len; 9572 ctsio->kern_total_len = data_len; 9573 } else { 9574 ctsio->residual = 0; 9575 ctsio->kern_data_len = alloc_len; 9576 ctsio->kern_total_len = alloc_len; 9577 } 9578 ctsio->kern_data_resid = 0; 9579 ctsio->kern_rel_offset = 0; 9580 ctsio->kern_sg_entries = 0; 9581 9582 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9583 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9584 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9585 sizeof(struct scsi_vpd_id_t10) + devid_len); 9586 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9587 CTL_WWPN_LEN); 9588 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9589 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9590 9591 /* 9592 * The control device is always connected. The disk device, on the 9593 * other hand, may not be online all the time. 9594 */ 9595 if (lun != NULL) 9596 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9597 lun->be_lun->lun_type; 9598 else 9599 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9600 9601 devid_ptr->page_code = SVPD_DEVICE_ID; 9602 9603 scsi_ulto2b(data_len - 4, devid_ptr->length); 9604 9605 /* 9606 * For Fibre channel, 9607 */ 9608 if (fe->port_type == CTL_PORT_FC) 9609 { 9610 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9611 SVPD_ID_CODESET_ASCII; 9612 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9613 SVPD_ID_CODESET_BINARY; 9614 } 9615 else 9616 { 9617 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9618 SVPD_ID_CODESET_ASCII; 9619 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9620 SVPD_ID_CODESET_BINARY; 9621 } 9622 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9623 9624 /* 9625 * We're using a LUN association here. i.e., this device ID is a 9626 * per-LUN identifier. 9627 */ 9628 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9629 desc->length = sizeof(*t10id) + devid_len; 9630 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 9631 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9632 } else { 9633 memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 9634 strncpy(t10id->vendor, val, 9635 min(sizeof(t10id->vendor), strlen(val))); 9636 } 9637 9638 /* 9639 * desc1 is for the WWPN which is a port asscociation. 9640 */ 9641 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9642 desc1->length = CTL_WWPN_LEN; 9643 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9644 /* For testing just create the WWPN */ 9645#if 0 9646 ddb_GetWWNN((char *)desc1->identifier); 9647 9648 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9649 /* This is so Copancontrol will return something sane */ 9650 if (ctsio->io_hdr.nexus.targ_port!=0 && 9651 ctsio->io_hdr.nexus.targ_port!=8) 9652 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9653 else 9654 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9655#endif 9656 9657 be64enc(desc1->identifier, fe->wwpn); 9658 9659 /* 9660 * desc2 is for the Relative Target Port(type 4h) identifier 9661 */ 9662 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9663 | SVPD_ID_TYPE_RELTARG; 9664 desc2->length = 4; 9665//#if 0 9666 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9667 /* This is so Copancontrol will return something sane */ 9668 if (ctsio->io_hdr.nexus.targ_port!=0 && 9669 ctsio->io_hdr.nexus.targ_port!=8) 9670 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9671 else 9672 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9673//#endif 9674 9675 /* 9676 * desc3 is for the Target Port Group(type 5h) identifier 9677 */ 9678 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9679 | SVPD_ID_TYPE_TPORTGRP; 9680 desc3->length = 4; 9681 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9682 desc3->identifier[3] = 1; 9683 else 9684 desc3->identifier[3] = 2; 9685 9686 /* 9687 * If we've actually got a backend, copy the device id from the 9688 * per-LUN data. Otherwise, set it to all spaces. 9689 */ 9690 if (lun != NULL) { 9691 /* 9692 * Copy the backend's LUN ID. 9693 */ 9694 strncpy((char *)t10id->vendor_spec_id, 9695 (char *)lun->be_lun->device_id, devid_len); 9696 } else { 9697 /* 9698 * No backend, set this to spaces. 9699 */ 9700 memset(t10id->vendor_spec_id, 0x20, devid_len); 9701 } 9702 9703 ctsio->scsi_status = SCSI_STATUS_OK; 9704 9705 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9706 ctsio->be_move_done = ctl_config_move_done; 9707 ctl_datamove((union ctl_io *)ctsio); 9708 9709 return (CTL_RETVAL_COMPLETE); 9710} 9711 9712static int 9713ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9714{ 9715 struct scsi_vpd_block_limits *bl_ptr; 9716 struct ctl_lun *lun; 9717 int bs; 9718 9719 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9720 bs = lun->be_lun->blocksize; 9721 9722 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9723 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9724 ctsio->kern_sg_entries = 0; 9725 9726 if (sizeof(*bl_ptr) < alloc_len) { 9727 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9728 ctsio->kern_data_len = sizeof(*bl_ptr); 9729 ctsio->kern_total_len = sizeof(*bl_ptr); 9730 } else { 9731 ctsio->residual = 0; 9732 ctsio->kern_data_len = alloc_len; 9733 ctsio->kern_total_len = alloc_len; 9734 } 9735 ctsio->kern_data_resid = 0; 9736 ctsio->kern_rel_offset = 0; 9737 ctsio->kern_sg_entries = 0; 9738 9739 /* 9740 * The control device is always connected. The disk device, on the 9741 * other hand, may not be online all the time. Need to change this 9742 * to figure out whether the disk device is actually online or not. 9743 */ 9744 if (lun != NULL) 9745 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9746 lun->be_lun->lun_type; 9747 else 9748 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9749 9750 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9751 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9752 bl_ptr->max_cmp_write_len = 0xff; 9753 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9754 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9755 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9756 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9757 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9758 } 9759 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9760 9761 ctsio->scsi_status = SCSI_STATUS_OK; 9762 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9763 ctsio->be_move_done = ctl_config_move_done; 9764 ctl_datamove((union ctl_io *)ctsio); 9765 9766 return (CTL_RETVAL_COMPLETE); 9767} 9768 9769static int 9770ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 9771{ 9772 struct scsi_vpd_logical_block_prov *lbp_ptr; 9773 struct ctl_lun *lun; 9774 int bs; 9775 9776 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9777 bs = lun->be_lun->blocksize; 9778 9779 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 9780 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 9781 ctsio->kern_sg_entries = 0; 9782 9783 if (sizeof(*lbp_ptr) < alloc_len) { 9784 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 9785 ctsio->kern_data_len = sizeof(*lbp_ptr); 9786 ctsio->kern_total_len = sizeof(*lbp_ptr); 9787 } else { 9788 ctsio->residual = 0; 9789 ctsio->kern_data_len = alloc_len; 9790 ctsio->kern_total_len = alloc_len; 9791 } 9792 ctsio->kern_data_resid = 0; 9793 ctsio->kern_rel_offset = 0; 9794 ctsio->kern_sg_entries = 0; 9795 9796 /* 9797 * The control device is always connected. The disk device, on the 9798 * other hand, may not be online all the time. Need to change this 9799 * to figure out whether the disk device is actually online or not. 9800 */ 9801 if (lun != NULL) 9802 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9803 lun->be_lun->lun_type; 9804 else 9805 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9806 9807 lbp_ptr->page_code = SVPD_LBP; 9808 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 9809 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 9810 9811 ctsio->scsi_status = SCSI_STATUS_OK; 9812 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9813 ctsio->be_move_done = ctl_config_move_done; 9814 ctl_datamove((union ctl_io *)ctsio); 9815 9816 return (CTL_RETVAL_COMPLETE); 9817} 9818 9819static int 9820ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9821{ 9822 struct scsi_inquiry *cdb; 9823 struct ctl_lun *lun; 9824 int alloc_len, retval; 9825 9826 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9827 cdb = (struct scsi_inquiry *)ctsio->cdb; 9828 9829 retval = CTL_RETVAL_COMPLETE; 9830 9831 alloc_len = scsi_2btoul(cdb->length); 9832 9833 switch (cdb->page_code) { 9834 case SVPD_SUPPORTED_PAGES: 9835 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9836 break; 9837 case SVPD_UNIT_SERIAL_NUMBER: 9838 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9839 break; 9840 case SVPD_DEVICE_ID: 9841 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9842 break; 9843 case SVPD_BLOCK_LIMITS: 9844 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 9845 break; 9846 case SVPD_LBP: 9847 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 9848 break; 9849 default: 9850 ctl_set_invalid_field(ctsio, 9851 /*sks_valid*/ 1, 9852 /*command*/ 1, 9853 /*field*/ 2, 9854 /*bit_valid*/ 0, 9855 /*bit*/ 0); 9856 ctl_done((union ctl_io *)ctsio); 9857 retval = CTL_RETVAL_COMPLETE; 9858 break; 9859 } 9860 9861 return (retval); 9862} 9863 9864static int 9865ctl_inquiry_std(struct ctl_scsiio *ctsio) 9866{ 9867 struct scsi_inquiry_data *inq_ptr; 9868 struct scsi_inquiry *cdb; 9869 struct ctl_softc *ctl_softc; 9870 struct ctl_lun *lun; 9871 char *val; 9872 uint32_t alloc_len; 9873 int is_fc; 9874 9875 ctl_softc = control_softc; 9876 9877 /* 9878 * Figure out whether we're talking to a Fibre Channel port or not. 9879 * We treat the ioctl front end, and any SCSI adapters, as packetized 9880 * SCSI front ends. 9881 */ 9882 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9883 CTL_PORT_FC) 9884 is_fc = 0; 9885 else 9886 is_fc = 1; 9887 9888 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9889 cdb = (struct scsi_inquiry *)ctsio->cdb; 9890 alloc_len = scsi_2btoul(cdb->length); 9891 9892 /* 9893 * We malloc the full inquiry data size here and fill it 9894 * in. If the user only asks for less, we'll give him 9895 * that much. 9896 */ 9897 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9898 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9899 ctsio->kern_sg_entries = 0; 9900 ctsio->kern_data_resid = 0; 9901 ctsio->kern_rel_offset = 0; 9902 9903 if (sizeof(*inq_ptr) < alloc_len) { 9904 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9905 ctsio->kern_data_len = sizeof(*inq_ptr); 9906 ctsio->kern_total_len = sizeof(*inq_ptr); 9907 } else { 9908 ctsio->residual = 0; 9909 ctsio->kern_data_len = alloc_len; 9910 ctsio->kern_total_len = alloc_len; 9911 } 9912 9913 /* 9914 * If we have a LUN configured, report it as connected. Otherwise, 9915 * report that it is offline or no device is supported, depending 9916 * on the value of inquiry_pq_no_lun. 9917 * 9918 * According to the spec (SPC-4 r34), the peripheral qualifier 9919 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9920 * 9921 * "A peripheral device having the specified peripheral device type 9922 * is not connected to this logical unit. However, the device 9923 * server is capable of supporting the specified peripheral device 9924 * type on this logical unit." 9925 * 9926 * According to the same spec, the peripheral qualifier 9927 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9928 * 9929 * "The device server is not capable of supporting a peripheral 9930 * device on this logical unit. For this peripheral qualifier the 9931 * peripheral device type shall be set to 1Fh. All other peripheral 9932 * device type values are reserved for this peripheral qualifier." 9933 * 9934 * Given the text, it would seem that we probably want to report that 9935 * the LUN is offline here. There is no LUN connected, but we can 9936 * support a LUN at the given LUN number. 9937 * 9938 * In the real world, though, it sounds like things are a little 9939 * different: 9940 * 9941 * - Linux, when presented with a LUN with the offline peripheral 9942 * qualifier, will create an sg driver instance for it. So when 9943 * you attach it to CTL, you wind up with a ton of sg driver 9944 * instances. (One for every LUN that Linux bothered to probe.) 9945 * Linux does this despite the fact that it issues a REPORT LUNs 9946 * to LUN 0 to get the inventory of supported LUNs. 9947 * 9948 * - There is other anecdotal evidence (from Emulex folks) about 9949 * arrays that use the offline peripheral qualifier for LUNs that 9950 * are on the "passive" path in an active/passive array. 9951 * 9952 * So the solution is provide a hopefully reasonable default 9953 * (return bad/no LUN) and allow the user to change the behavior 9954 * with a tunable/sysctl variable. 9955 */ 9956 if (lun != NULL) 9957 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9958 lun->be_lun->lun_type; 9959 else if (ctl_softc->inquiry_pq_no_lun == 0) 9960 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9961 else 9962 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9963 9964 /* RMB in byte 2 is 0 */ 9965 inq_ptr->version = SCSI_REV_SPC3; 9966 9967 /* 9968 * According to SAM-3, even if a device only supports a single 9969 * level of LUN addressing, it should still set the HISUP bit: 9970 * 9971 * 4.9.1 Logical unit numbers overview 9972 * 9973 * All logical unit number formats described in this standard are 9974 * hierarchical in structure even when only a single level in that 9975 * hierarchy is used. The HISUP bit shall be set to one in the 9976 * standard INQUIRY data (see SPC-2) when any logical unit number 9977 * format described in this standard is used. Non-hierarchical 9978 * formats are outside the scope of this standard. 9979 * 9980 * Therefore we set the HiSup bit here. 9981 * 9982 * The reponse format is 2, per SPC-3. 9983 */ 9984 inq_ptr->response_format = SID_HiSup | 2; 9985 9986 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9987 CTL_DEBUG_PRINT(("additional_length = %d\n", 9988 inq_ptr->additional_length)); 9989 9990 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9991 /* 16 bit addressing */ 9992 if (is_fc == 0) 9993 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9994 /* XXX set the SID_MultiP bit here if we're actually going to 9995 respond on multiple ports */ 9996 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9997 9998 /* 16 bit data bus, synchronous transfers */ 9999 /* XXX these flags don't apply for FC */ 10000 if (is_fc == 0) 10001 inq_ptr->flags = SID_WBus16 | SID_Sync; 10002 /* 10003 * XXX KDM do we want to support tagged queueing on the control 10004 * device at all? 10005 */ 10006 if ((lun == NULL) 10007 || (lun->be_lun->lun_type != T_PROCESSOR)) 10008 inq_ptr->flags |= SID_CmdQue; 10009 /* 10010 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 10011 * We have 8 bytes for the vendor name, and 16 bytes for the device 10012 * name and 4 bytes for the revision. 10013 */ 10014 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 10015 strcpy(inq_ptr->vendor, CTL_VENDOR); 10016 } else { 10017 memset(inq_ptr->vendor, ' ', sizeof(inq_ptr->vendor)); 10018 strncpy(inq_ptr->vendor, val, 10019 min(sizeof(inq_ptr->vendor), strlen(val))); 10020 } 10021 if (lun == NULL) { 10022 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10023 } else if ((val = ctl_get_opt(lun->be_lun, "product")) == NULL) { 10024 switch (lun->be_lun->lun_type) { 10025 case T_DIRECT: 10026 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10027 break; 10028 case T_PROCESSOR: 10029 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 10030 break; 10031 default: 10032 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 10033 break; 10034 } 10035 } else { 10036 memset(inq_ptr->product, ' ', sizeof(inq_ptr->product)); 10037 strncpy(inq_ptr->product, val, 10038 min(sizeof(inq_ptr->product), strlen(val))); 10039 } 10040 10041 /* 10042 * XXX make this a macro somewhere so it automatically gets 10043 * incremented when we make changes. 10044 */ 10045 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "revision")) == NULL) { 10046 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 10047 } else { 10048 memset(inq_ptr->revision, ' ', sizeof(inq_ptr->revision)); 10049 strncpy(inq_ptr->revision, val, 10050 min(sizeof(inq_ptr->revision), strlen(val))); 10051 } 10052 10053 /* 10054 * For parallel SCSI, we support double transition and single 10055 * transition clocking. We also support QAS (Quick Arbitration 10056 * and Selection) and Information Unit transfers on both the 10057 * control and array devices. 10058 */ 10059 if (is_fc == 0) 10060 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 10061 SID_SPI_IUS; 10062 10063 /* SAM-3 */ 10064 scsi_ulto2b(0x0060, inq_ptr->version1); 10065 /* SPC-3 (no version claimed) XXX should we claim a version? */ 10066 scsi_ulto2b(0x0300, inq_ptr->version2); 10067 if (is_fc) { 10068 /* FCP-2 ANSI INCITS.350:2003 */ 10069 scsi_ulto2b(0x0917, inq_ptr->version3); 10070 } else { 10071 /* SPI-4 ANSI INCITS.362:200x */ 10072 scsi_ulto2b(0x0B56, inq_ptr->version3); 10073 } 10074 10075 if (lun == NULL) { 10076 /* SBC-2 (no version claimed) XXX should we claim a version? */ 10077 scsi_ulto2b(0x0320, inq_ptr->version4); 10078 } else { 10079 switch (lun->be_lun->lun_type) { 10080 case T_DIRECT: 10081 /* 10082 * SBC-2 (no version claimed) XXX should we claim a 10083 * version? 10084 */ 10085 scsi_ulto2b(0x0320, inq_ptr->version4); 10086 break; 10087 case T_PROCESSOR: 10088 default: 10089 break; 10090 } 10091 } 10092 10093 ctsio->scsi_status = SCSI_STATUS_OK; 10094 if (ctsio->kern_data_len > 0) { 10095 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 10096 ctsio->be_move_done = ctl_config_move_done; 10097 ctl_datamove((union ctl_io *)ctsio); 10098 } else { 10099 ctsio->io_hdr.status = CTL_SUCCESS; 10100 ctl_done((union ctl_io *)ctsio); 10101 } 10102 10103 return (CTL_RETVAL_COMPLETE); 10104} 10105 10106int 10107ctl_inquiry(struct ctl_scsiio *ctsio) 10108{ 10109 struct scsi_inquiry *cdb; 10110 int retval; 10111 10112 cdb = (struct scsi_inquiry *)ctsio->cdb; 10113 10114 retval = 0; 10115 10116 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 10117 10118 /* 10119 * Right now, we don't support the CmdDt inquiry information. 10120 * This would be nice to support in the future. When we do 10121 * support it, we should change this test so that it checks to make 10122 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 10123 */ 10124#ifdef notyet 10125 if (((cdb->byte2 & SI_EVPD) 10126 && (cdb->byte2 & SI_CMDDT))) 10127#endif 10128 if (cdb->byte2 & SI_CMDDT) { 10129 /* 10130 * Point to the SI_CMDDT bit. We might change this 10131 * when we support SI_CMDDT, but since both bits would be 10132 * "wrong", this should probably just stay as-is then. 10133 */ 10134 ctl_set_invalid_field(ctsio, 10135 /*sks_valid*/ 1, 10136 /*command*/ 1, 10137 /*field*/ 1, 10138 /*bit_valid*/ 1, 10139 /*bit*/ 1); 10140 ctl_done((union ctl_io *)ctsio); 10141 return (CTL_RETVAL_COMPLETE); 10142 } 10143 if (cdb->byte2 & SI_EVPD) 10144 retval = ctl_inquiry_evpd(ctsio); 10145#ifdef notyet 10146 else if (cdb->byte2 & SI_CMDDT) 10147 retval = ctl_inquiry_cmddt(ctsio); 10148#endif 10149 else 10150 retval = ctl_inquiry_std(ctsio); 10151 10152 return (retval); 10153} 10154 10155/* 10156 * For known CDB types, parse the LBA and length. 10157 */ 10158static int 10159ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 10160{ 10161 if (io->io_hdr.io_type != CTL_IO_SCSI) 10162 return (1); 10163 10164 switch (io->scsiio.cdb[0]) { 10165 case COMPARE_AND_WRITE: { 10166 struct scsi_compare_and_write *cdb; 10167 10168 cdb = (struct scsi_compare_and_write *)io->scsiio.cdb; 10169 10170 *lba = scsi_8btou64(cdb->addr); 10171 *len = cdb->length; 10172 break; 10173 } 10174 case READ_6: 10175 case WRITE_6: { 10176 struct scsi_rw_6 *cdb; 10177 10178 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 10179 10180 *lba = scsi_3btoul(cdb->addr); 10181 /* only 5 bits are valid in the most significant address byte */ 10182 *lba &= 0x1fffff; 10183 *len = cdb->length; 10184 break; 10185 } 10186 case READ_10: 10187 case WRITE_10: { 10188 struct scsi_rw_10 *cdb; 10189 10190 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 10191 10192 *lba = scsi_4btoul(cdb->addr); 10193 *len = scsi_2btoul(cdb->length); 10194 break; 10195 } 10196 case WRITE_VERIFY_10: { 10197 struct scsi_write_verify_10 *cdb; 10198 10199 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 10200 10201 *lba = scsi_4btoul(cdb->addr); 10202 *len = scsi_2btoul(cdb->length); 10203 break; 10204 } 10205 case READ_12: 10206 case WRITE_12: { 10207 struct scsi_rw_12 *cdb; 10208 10209 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 10210 10211 *lba = scsi_4btoul(cdb->addr); 10212 *len = scsi_4btoul(cdb->length); 10213 break; 10214 } 10215 case WRITE_VERIFY_12: { 10216 struct scsi_write_verify_12 *cdb; 10217 10218 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 10219 10220 *lba = scsi_4btoul(cdb->addr); 10221 *len = scsi_4btoul(cdb->length); 10222 break; 10223 } 10224 case READ_16: 10225 case WRITE_16: { 10226 struct scsi_rw_16 *cdb; 10227 10228 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 10229 10230 *lba = scsi_8btou64(cdb->addr); 10231 *len = scsi_4btoul(cdb->length); 10232 break; 10233 } 10234 case WRITE_VERIFY_16: { 10235 struct scsi_write_verify_16 *cdb; 10236 10237 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 10238 10239 10240 *lba = scsi_8btou64(cdb->addr); 10241 *len = scsi_4btoul(cdb->length); 10242 break; 10243 } 10244 case WRITE_SAME_10: { 10245 struct scsi_write_same_10 *cdb; 10246 10247 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 10248 10249 *lba = scsi_4btoul(cdb->addr); 10250 *len = scsi_2btoul(cdb->length); 10251 break; 10252 } 10253 case WRITE_SAME_16: { 10254 struct scsi_write_same_16 *cdb; 10255 10256 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 10257 10258 *lba = scsi_8btou64(cdb->addr); 10259 *len = scsi_4btoul(cdb->length); 10260 break; 10261 } 10262 case VERIFY_10: { 10263 struct scsi_verify_10 *cdb; 10264 10265 cdb = (struct scsi_verify_10 *)io->scsiio.cdb; 10266 10267 *lba = scsi_4btoul(cdb->addr); 10268 *len = scsi_2btoul(cdb->length); 10269 break; 10270 } 10271 case VERIFY_12: { 10272 struct scsi_verify_12 *cdb; 10273 10274 cdb = (struct scsi_verify_12 *)io->scsiio.cdb; 10275 10276 *lba = scsi_4btoul(cdb->addr); 10277 *len = scsi_4btoul(cdb->length); 10278 break; 10279 } 10280 case VERIFY_16: { 10281 struct scsi_verify_16 *cdb; 10282 10283 cdb = (struct scsi_verify_16 *)io->scsiio.cdb; 10284 10285 *lba = scsi_8btou64(cdb->addr); 10286 *len = scsi_4btoul(cdb->length); 10287 break; 10288 } 10289 default: 10290 return (1); 10291 break; /* NOTREACHED */ 10292 } 10293 10294 return (0); 10295} 10296 10297static ctl_action 10298ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10299{ 10300 uint64_t endlba1, endlba2; 10301 10302 endlba1 = lba1 + len1 - 1; 10303 endlba2 = lba2 + len2 - 1; 10304 10305 if ((endlba1 < lba2) 10306 || (endlba2 < lba1)) 10307 return (CTL_ACTION_PASS); 10308 else 10309 return (CTL_ACTION_BLOCK); 10310} 10311 10312static ctl_action 10313ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10314{ 10315 uint64_t lba1, lba2; 10316 uint32_t len1, len2; 10317 int retval; 10318 10319 retval = ctl_get_lba_len(io1, &lba1, &len1); 10320 if (retval != 0) 10321 return (CTL_ACTION_ERROR); 10322 10323 retval = ctl_get_lba_len(io2, &lba2, &len2); 10324 if (retval != 0) 10325 return (CTL_ACTION_ERROR); 10326 10327 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10328} 10329 10330static ctl_action 10331ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10332{ 10333 struct ctl_cmd_entry *pending_entry, *ooa_entry; 10334 ctl_serialize_action *serialize_row; 10335 10336 /* 10337 * The initiator attempted multiple untagged commands at the same 10338 * time. Can't do that. 10339 */ 10340 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10341 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10342 && ((pending_io->io_hdr.nexus.targ_port == 10343 ooa_io->io_hdr.nexus.targ_port) 10344 && (pending_io->io_hdr.nexus.initid.id == 10345 ooa_io->io_hdr.nexus.initid.id)) 10346 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10347 return (CTL_ACTION_OVERLAP); 10348 10349 /* 10350 * The initiator attempted to send multiple tagged commands with 10351 * the same ID. (It's fine if different initiators have the same 10352 * tag ID.) 10353 * 10354 * Even if all of those conditions are true, we don't kill the I/O 10355 * if the command ahead of us has been aborted. We won't end up 10356 * sending it to the FETD, and it's perfectly legal to resend a 10357 * command with the same tag number as long as the previous 10358 * instance of this tag number has been aborted somehow. 10359 */ 10360 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10361 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10362 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10363 && ((pending_io->io_hdr.nexus.targ_port == 10364 ooa_io->io_hdr.nexus.targ_port) 10365 && (pending_io->io_hdr.nexus.initid.id == 10366 ooa_io->io_hdr.nexus.initid.id)) 10367 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10368 return (CTL_ACTION_OVERLAP_TAG); 10369 10370 /* 10371 * If we get a head of queue tag, SAM-3 says that we should 10372 * immediately execute it. 10373 * 10374 * What happens if this command would normally block for some other 10375 * reason? e.g. a request sense with a head of queue tag 10376 * immediately after a write. Normally that would block, but this 10377 * will result in its getting executed immediately... 10378 * 10379 * We currently return "pass" instead of "skip", so we'll end up 10380 * going through the rest of the queue to check for overlapped tags. 10381 * 10382 * XXX KDM check for other types of blockage first?? 10383 */ 10384 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10385 return (CTL_ACTION_PASS); 10386 10387 /* 10388 * Ordered tags have to block until all items ahead of them 10389 * have completed. If we get called with an ordered tag, we always 10390 * block, if something else is ahead of us in the queue. 10391 */ 10392 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10393 return (CTL_ACTION_BLOCK); 10394 10395 /* 10396 * Simple tags get blocked until all head of queue and ordered tags 10397 * ahead of them have completed. I'm lumping untagged commands in 10398 * with simple tags here. XXX KDM is that the right thing to do? 10399 */ 10400 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10401 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10402 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10403 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10404 return (CTL_ACTION_BLOCK); 10405 10406 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 10407 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 10408 10409 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10410 10411 switch (serialize_row[pending_entry->seridx]) { 10412 case CTL_SER_BLOCK: 10413 return (CTL_ACTION_BLOCK); 10414 break; /* NOTREACHED */ 10415 case CTL_SER_EXTENT: 10416 return (ctl_extent_check(pending_io, ooa_io)); 10417 break; /* NOTREACHED */ 10418 case CTL_SER_PASS: 10419 return (CTL_ACTION_PASS); 10420 break; /* NOTREACHED */ 10421 case CTL_SER_SKIP: 10422 return (CTL_ACTION_SKIP); 10423 break; 10424 default: 10425 panic("invalid serialization value %d", 10426 serialize_row[pending_entry->seridx]); 10427 break; /* NOTREACHED */ 10428 } 10429 10430 return (CTL_ACTION_ERROR); 10431} 10432 10433/* 10434 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10435 * Assumptions: 10436 * - pending_io is generally either incoming, or on the blocked queue 10437 * - starting I/O is the I/O we want to start the check with. 10438 */ 10439static ctl_action 10440ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10441 union ctl_io *starting_io) 10442{ 10443 union ctl_io *ooa_io; 10444 ctl_action action; 10445 10446 mtx_assert(&lun->lun_lock, MA_OWNED); 10447 10448 /* 10449 * Run back along the OOA queue, starting with the current 10450 * blocked I/O and going through every I/O before it on the 10451 * queue. If starting_io is NULL, we'll just end up returning 10452 * CTL_ACTION_PASS. 10453 */ 10454 for (ooa_io = starting_io; ooa_io != NULL; 10455 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10456 ooa_links)){ 10457 10458 /* 10459 * This routine just checks to see whether 10460 * cur_blocked is blocked by ooa_io, which is ahead 10461 * of it in the queue. It doesn't queue/dequeue 10462 * cur_blocked. 10463 */ 10464 action = ctl_check_for_blockage(pending_io, ooa_io); 10465 switch (action) { 10466 case CTL_ACTION_BLOCK: 10467 case CTL_ACTION_OVERLAP: 10468 case CTL_ACTION_OVERLAP_TAG: 10469 case CTL_ACTION_SKIP: 10470 case CTL_ACTION_ERROR: 10471 return (action); 10472 break; /* NOTREACHED */ 10473 case CTL_ACTION_PASS: 10474 break; 10475 default: 10476 panic("invalid action %d", action); 10477 break; /* NOTREACHED */ 10478 } 10479 } 10480 10481 return (CTL_ACTION_PASS); 10482} 10483 10484/* 10485 * Assumptions: 10486 * - An I/O has just completed, and has been removed from the per-LUN OOA 10487 * queue, so some items on the blocked queue may now be unblocked. 10488 */ 10489static int 10490ctl_check_blocked(struct ctl_lun *lun) 10491{ 10492 union ctl_io *cur_blocked, *next_blocked; 10493 10494 mtx_assert(&lun->lun_lock, MA_OWNED); 10495 10496 /* 10497 * Run forward from the head of the blocked queue, checking each 10498 * entry against the I/Os prior to it on the OOA queue to see if 10499 * there is still any blockage. 10500 * 10501 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10502 * with our removing a variable on it while it is traversing the 10503 * list. 10504 */ 10505 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10506 cur_blocked != NULL; cur_blocked = next_blocked) { 10507 union ctl_io *prev_ooa; 10508 ctl_action action; 10509 10510 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10511 blocked_links); 10512 10513 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10514 ctl_ooaq, ooa_links); 10515 10516 /* 10517 * If cur_blocked happens to be the first item in the OOA 10518 * queue now, prev_ooa will be NULL, and the action 10519 * returned will just be CTL_ACTION_PASS. 10520 */ 10521 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10522 10523 switch (action) { 10524 case CTL_ACTION_BLOCK: 10525 /* Nothing to do here, still blocked */ 10526 break; 10527 case CTL_ACTION_OVERLAP: 10528 case CTL_ACTION_OVERLAP_TAG: 10529 /* 10530 * This shouldn't happen! In theory we've already 10531 * checked this command for overlap... 10532 */ 10533 break; 10534 case CTL_ACTION_PASS: 10535 case CTL_ACTION_SKIP: { 10536 struct ctl_softc *softc; 10537 struct ctl_cmd_entry *entry; 10538 uint32_t initidx; 10539 uint8_t opcode; 10540 int isc_retval; 10541 10542 /* 10543 * The skip case shouldn't happen, this transaction 10544 * should have never made it onto the blocked queue. 10545 */ 10546 /* 10547 * This I/O is no longer blocked, we can remove it 10548 * from the blocked queue. Since this is a TAILQ 10549 * (doubly linked list), we can do O(1) removals 10550 * from any place on the list. 10551 */ 10552 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10553 blocked_links); 10554 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10555 10556 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10557 /* 10558 * Need to send IO back to original side to 10559 * run 10560 */ 10561 union ctl_ha_msg msg_info; 10562 10563 msg_info.hdr.original_sc = 10564 cur_blocked->io_hdr.original_sc; 10565 msg_info.hdr.serializing_sc = cur_blocked; 10566 msg_info.hdr.msg_type = CTL_MSG_R2R; 10567 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10568 &msg_info, sizeof(msg_info), 0)) > 10569 CTL_HA_STATUS_SUCCESS) { 10570 printf("CTL:Check Blocked error from " 10571 "ctl_ha_msg_send %d\n", 10572 isc_retval); 10573 } 10574 break; 10575 } 10576 opcode = cur_blocked->scsiio.cdb[0]; 10577 entry = &ctl_cmd_table[opcode]; 10578 softc = control_softc; 10579 10580 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10581 10582 /* 10583 * Check this I/O for LUN state changes that may 10584 * have happened while this command was blocked. 10585 * The LUN state may have been changed by a command 10586 * ahead of us in the queue, so we need to re-check 10587 * for any states that can be caused by SCSI 10588 * commands. 10589 */ 10590 if (ctl_scsiio_lun_check(softc, lun, entry, 10591 &cur_blocked->scsiio) == 0) { 10592 cur_blocked->io_hdr.flags |= 10593 CTL_FLAG_IS_WAS_ON_RTR; 10594 ctl_enqueue_rtr(cur_blocked); 10595 } else 10596 ctl_done(cur_blocked); 10597 break; 10598 } 10599 default: 10600 /* 10601 * This probably shouldn't happen -- we shouldn't 10602 * get CTL_ACTION_ERROR, or anything else. 10603 */ 10604 break; 10605 } 10606 } 10607 10608 return (CTL_RETVAL_COMPLETE); 10609} 10610 10611/* 10612 * This routine (with one exception) checks LUN flags that can be set by 10613 * commands ahead of us in the OOA queue. These flags have to be checked 10614 * when a command initially comes in, and when we pull a command off the 10615 * blocked queue and are preparing to execute it. The reason we have to 10616 * check these flags for commands on the blocked queue is that the LUN 10617 * state may have been changed by a command ahead of us while we're on the 10618 * blocked queue. 10619 * 10620 * Ordering is somewhat important with these checks, so please pay 10621 * careful attention to the placement of any new checks. 10622 */ 10623static int 10624ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10625 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10626{ 10627 int retval; 10628 10629 retval = 0; 10630 10631 mtx_assert(&lun->lun_lock, MA_OWNED); 10632 10633 /* 10634 * If this shelf is a secondary shelf controller, we have to reject 10635 * any media access commands. 10636 */ 10637#if 0 10638 /* No longer needed for HA */ 10639 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10640 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10641 ctl_set_lun_standby(ctsio); 10642 retval = 1; 10643 goto bailout; 10644 } 10645#endif 10646 10647 /* 10648 * Check for a reservation conflict. If this command isn't allowed 10649 * even on reserved LUNs, and if this initiator isn't the one who 10650 * reserved us, reject the command with a reservation conflict. 10651 */ 10652 if ((lun->flags & CTL_LUN_RESERVED) 10653 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10654 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10655 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10656 || (ctsio->io_hdr.nexus.targ_target.id != 10657 lun->rsv_nexus.targ_target.id)) { 10658 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10659 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10660 retval = 1; 10661 goto bailout; 10662 } 10663 } 10664 10665 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10666 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10667 uint32_t residx; 10668 10669 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10670 /* 10671 * if we aren't registered or it's a res holder type 10672 * reservation and this isn't the res holder then set a 10673 * conflict. 10674 * NOTE: Commands which might be allowed on write exclusive 10675 * type reservations are checked in the particular command 10676 * for a conflict. Read and SSU are the only ones. 10677 */ 10678 if (!lun->per_res[residx].registered 10679 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10680 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10681 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10682 retval = 1; 10683 goto bailout; 10684 } 10685 10686 } 10687 10688 if ((lun->flags & CTL_LUN_OFFLINE) 10689 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10690 ctl_set_lun_not_ready(ctsio); 10691 retval = 1; 10692 goto bailout; 10693 } 10694 10695 /* 10696 * If the LUN is stopped, see if this particular command is allowed 10697 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10698 */ 10699 if ((lun->flags & CTL_LUN_STOPPED) 10700 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10701 /* "Logical unit not ready, initializing cmd. required" */ 10702 ctl_set_lun_stopped(ctsio); 10703 retval = 1; 10704 goto bailout; 10705 } 10706 10707 if ((lun->flags & CTL_LUN_INOPERABLE) 10708 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10709 /* "Medium format corrupted" */ 10710 ctl_set_medium_format_corrupted(ctsio); 10711 retval = 1; 10712 goto bailout; 10713 } 10714 10715bailout: 10716 return (retval); 10717 10718} 10719 10720static void 10721ctl_failover_io(union ctl_io *io, int have_lock) 10722{ 10723 ctl_set_busy(&io->scsiio); 10724 ctl_done(io); 10725} 10726 10727static void 10728ctl_failover(void) 10729{ 10730 struct ctl_lun *lun; 10731 struct ctl_softc *ctl_softc; 10732 union ctl_io *next_io, *pending_io; 10733 union ctl_io *io; 10734 int lun_idx; 10735 int i; 10736 10737 ctl_softc = control_softc; 10738 10739 mtx_lock(&ctl_softc->ctl_lock); 10740 /* 10741 * Remove any cmds from the other SC from the rtr queue. These 10742 * will obviously only be for LUNs for which we're the primary. 10743 * We can't send status or get/send data for these commands. 10744 * Since they haven't been executed yet, we can just remove them. 10745 * We'll either abort them or delete them below, depending on 10746 * which HA mode we're in. 10747 */ 10748#ifdef notyet 10749 mtx_lock(&ctl_softc->queue_lock); 10750 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10751 io != NULL; io = next_io) { 10752 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10753 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10754 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10755 ctl_io_hdr, links); 10756 } 10757 mtx_unlock(&ctl_softc->queue_lock); 10758#endif 10759 10760 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10761 lun = ctl_softc->ctl_luns[lun_idx]; 10762 if (lun==NULL) 10763 continue; 10764 10765 /* 10766 * Processor LUNs are primary on both sides. 10767 * XXX will this always be true? 10768 */ 10769 if (lun->be_lun->lun_type == T_PROCESSOR) 10770 continue; 10771 10772 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10773 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10774 printf("FAILOVER: primary lun %d\n", lun_idx); 10775 /* 10776 * Remove all commands from the other SC. First from the 10777 * blocked queue then from the ooa queue. Once we have 10778 * removed them. Call ctl_check_blocked to see if there 10779 * is anything that can run. 10780 */ 10781 for (io = (union ctl_io *)TAILQ_FIRST( 10782 &lun->blocked_queue); io != NULL; io = next_io) { 10783 10784 next_io = (union ctl_io *)TAILQ_NEXT( 10785 &io->io_hdr, blocked_links); 10786 10787 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10788 TAILQ_REMOVE(&lun->blocked_queue, 10789 &io->io_hdr,blocked_links); 10790 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10791 TAILQ_REMOVE(&lun->ooa_queue, 10792 &io->io_hdr, ooa_links); 10793 10794 ctl_free_io(io); 10795 } 10796 } 10797 10798 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10799 io != NULL; io = next_io) { 10800 10801 next_io = (union ctl_io *)TAILQ_NEXT( 10802 &io->io_hdr, ooa_links); 10803 10804 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10805 10806 TAILQ_REMOVE(&lun->ooa_queue, 10807 &io->io_hdr, 10808 ooa_links); 10809 10810 ctl_free_io(io); 10811 } 10812 } 10813 ctl_check_blocked(lun); 10814 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10815 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10816 10817 printf("FAILOVER: primary lun %d\n", lun_idx); 10818 /* 10819 * Abort all commands from the other SC. We can't 10820 * send status back for them now. These should get 10821 * cleaned up when they are completed or come out 10822 * for a datamove operation. 10823 */ 10824 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10825 io != NULL; io = next_io) { 10826 next_io = (union ctl_io *)TAILQ_NEXT( 10827 &io->io_hdr, ooa_links); 10828 10829 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10830 io->io_hdr.flags |= CTL_FLAG_ABORT; 10831 } 10832 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10833 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10834 10835 printf("FAILOVER: secondary lun %d\n", lun_idx); 10836 10837 lun->flags |= CTL_LUN_PRIMARY_SC; 10838 10839 /* 10840 * We send all I/O that was sent to this controller 10841 * and redirected to the other side back with 10842 * busy status, and have the initiator retry it. 10843 * Figuring out how much data has been transferred, 10844 * etc. and picking up where we left off would be 10845 * very tricky. 10846 * 10847 * XXX KDM need to remove I/O from the blocked 10848 * queue as well! 10849 */ 10850 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10851 &lun->ooa_queue); pending_io != NULL; 10852 pending_io = next_io) { 10853 10854 next_io = (union ctl_io *)TAILQ_NEXT( 10855 &pending_io->io_hdr, ooa_links); 10856 10857 pending_io->io_hdr.flags &= 10858 ~CTL_FLAG_SENT_2OTHER_SC; 10859 10860 if (pending_io->io_hdr.flags & 10861 CTL_FLAG_IO_ACTIVE) { 10862 pending_io->io_hdr.flags |= 10863 CTL_FLAG_FAILOVER; 10864 } else { 10865 ctl_set_busy(&pending_io->scsiio); 10866 ctl_done(pending_io); 10867 } 10868 } 10869 10870 /* 10871 * Build Unit Attention 10872 */ 10873 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10874 lun->pending_sense[i].ua_pending |= 10875 CTL_UA_ASYM_ACC_CHANGE; 10876 } 10877 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10878 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10879 printf("FAILOVER: secondary lun %d\n", lun_idx); 10880 /* 10881 * if the first io on the OOA is not on the RtR queue 10882 * add it. 10883 */ 10884 lun->flags |= CTL_LUN_PRIMARY_SC; 10885 10886 pending_io = (union ctl_io *)TAILQ_FIRST( 10887 &lun->ooa_queue); 10888 if (pending_io==NULL) { 10889 printf("Nothing on OOA queue\n"); 10890 continue; 10891 } 10892 10893 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10894 if ((pending_io->io_hdr.flags & 10895 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10896 pending_io->io_hdr.flags |= 10897 CTL_FLAG_IS_WAS_ON_RTR; 10898 ctl_enqueue_rtr(pending_io); 10899 } 10900#if 0 10901 else 10902 { 10903 printf("Tag 0x%04x is running\n", 10904 pending_io->scsiio.tag_num); 10905 } 10906#endif 10907 10908 next_io = (union ctl_io *)TAILQ_NEXT( 10909 &pending_io->io_hdr, ooa_links); 10910 for (pending_io=next_io; pending_io != NULL; 10911 pending_io = next_io) { 10912 pending_io->io_hdr.flags &= 10913 ~CTL_FLAG_SENT_2OTHER_SC; 10914 next_io = (union ctl_io *)TAILQ_NEXT( 10915 &pending_io->io_hdr, ooa_links); 10916 if (pending_io->io_hdr.flags & 10917 CTL_FLAG_IS_WAS_ON_RTR) { 10918#if 0 10919 printf("Tag 0x%04x is running\n", 10920 pending_io->scsiio.tag_num); 10921#endif 10922 continue; 10923 } 10924 10925 switch (ctl_check_ooa(lun, pending_io, 10926 (union ctl_io *)TAILQ_PREV( 10927 &pending_io->io_hdr, ctl_ooaq, 10928 ooa_links))) { 10929 10930 case CTL_ACTION_BLOCK: 10931 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10932 &pending_io->io_hdr, 10933 blocked_links); 10934 pending_io->io_hdr.flags |= 10935 CTL_FLAG_BLOCKED; 10936 break; 10937 case CTL_ACTION_PASS: 10938 case CTL_ACTION_SKIP: 10939 pending_io->io_hdr.flags |= 10940 CTL_FLAG_IS_WAS_ON_RTR; 10941 ctl_enqueue_rtr(pending_io); 10942 break; 10943 case CTL_ACTION_OVERLAP: 10944 ctl_set_overlapped_cmd( 10945 (struct ctl_scsiio *)pending_io); 10946 ctl_done(pending_io); 10947 break; 10948 case CTL_ACTION_OVERLAP_TAG: 10949 ctl_set_overlapped_tag( 10950 (struct ctl_scsiio *)pending_io, 10951 pending_io->scsiio.tag_num & 0xff); 10952 ctl_done(pending_io); 10953 break; 10954 case CTL_ACTION_ERROR: 10955 default: 10956 ctl_set_internal_failure( 10957 (struct ctl_scsiio *)pending_io, 10958 0, // sks_valid 10959 0); //retry count 10960 ctl_done(pending_io); 10961 break; 10962 } 10963 } 10964 10965 /* 10966 * Build Unit Attention 10967 */ 10968 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10969 lun->pending_sense[i].ua_pending |= 10970 CTL_UA_ASYM_ACC_CHANGE; 10971 } 10972 } else { 10973 panic("Unhandled HA mode failover, LUN flags = %#x, " 10974 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10975 } 10976 } 10977 ctl_pause_rtr = 0; 10978 mtx_unlock(&ctl_softc->ctl_lock); 10979} 10980 10981static int 10982ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10983{ 10984 struct ctl_lun *lun; 10985 struct ctl_cmd_entry *entry; 10986 uint8_t opcode; 10987 uint32_t initidx, targ_lun; 10988 int retval; 10989 10990 retval = 0; 10991 10992 lun = NULL; 10993 10994 opcode = ctsio->cdb[0]; 10995 10996 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 10997 if ((targ_lun < CTL_MAX_LUNS) 10998 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 10999 lun = ctl_softc->ctl_luns[targ_lun]; 11000 /* 11001 * If the LUN is invalid, pretend that it doesn't exist. 11002 * It will go away as soon as all pending I/O has been 11003 * completed. 11004 */ 11005 if (lun->flags & CTL_LUN_DISABLED) { 11006 lun = NULL; 11007 } else { 11008 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 11009 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 11010 lun->be_lun; 11011 if (lun->be_lun->lun_type == T_PROCESSOR) { 11012 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 11013 } 11014 } 11015 } else { 11016 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 11017 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 11018 } 11019 11020 entry = &ctl_cmd_table[opcode]; 11021 11022 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 11023 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 11024 11025 /* 11026 * Check to see whether we can send this command to LUNs that don't 11027 * exist. This should pretty much only be the case for inquiry 11028 * and request sense. Further checks, below, really require having 11029 * a LUN, so we can't really check the command anymore. Just put 11030 * it on the rtr queue. 11031 */ 11032 if (lun == NULL) { 11033 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) { 11034 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11035 ctl_enqueue_rtr((union ctl_io *)ctsio); 11036 return (retval); 11037 } 11038 11039 ctl_set_unsupported_lun(ctsio); 11040 ctl_done((union ctl_io *)ctsio); 11041 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 11042 return (retval); 11043 } else { 11044 mtx_lock(&lun->lun_lock); 11045 11046 /* 11047 * Every I/O goes into the OOA queue for a particular LUN, and 11048 * stays there until completion. 11049 */ 11050 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 11051 11052 /* 11053 * Make sure we support this particular command on this LUN. 11054 * e.g., we don't support writes to the control LUN. 11055 */ 11056 switch (lun->be_lun->lun_type) { 11057 case T_PROCESSOR: 11058 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 11059 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11060 == 0)) { 11061 mtx_unlock(&lun->lun_lock); 11062 ctl_set_invalid_opcode(ctsio); 11063 ctl_done((union ctl_io *)ctsio); 11064 return (retval); 11065 } 11066 break; 11067 case T_DIRECT: 11068 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 11069 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11070 == 0)){ 11071 mtx_unlock(&lun->lun_lock); 11072 ctl_set_invalid_opcode(ctsio); 11073 ctl_done((union ctl_io *)ctsio); 11074 return (retval); 11075 } 11076 break; 11077 default: 11078 mtx_unlock(&lun->lun_lock); 11079 panic("Unsupported CTL LUN type %d\n", 11080 lun->be_lun->lun_type); 11081 } 11082 } 11083 11084 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 11085 11086 /* 11087 * If we've got a request sense, it'll clear the contingent 11088 * allegiance condition. Otherwise, if we have a CA condition for 11089 * this initiator, clear it, because it sent down a command other 11090 * than request sense. 11091 */ 11092 if ((opcode != REQUEST_SENSE) 11093 && (ctl_is_set(lun->have_ca, initidx))) 11094 ctl_clear_mask(lun->have_ca, initidx); 11095 11096 /* 11097 * If the command has this flag set, it handles its own unit 11098 * attention reporting, we shouldn't do anything. Otherwise we 11099 * check for any pending unit attentions, and send them back to the 11100 * initiator. We only do this when a command initially comes in, 11101 * not when we pull it off the blocked queue. 11102 * 11103 * According to SAM-3, section 5.3.2, the order that things get 11104 * presented back to the host is basically unit attentions caused 11105 * by some sort of reset event, busy status, reservation conflicts 11106 * or task set full, and finally any other status. 11107 * 11108 * One issue here is that some of the unit attentions we report 11109 * don't fall into the "reset" category (e.g. "reported luns data 11110 * has changed"). So reporting it here, before the reservation 11111 * check, may be technically wrong. I guess the only thing to do 11112 * would be to check for and report the reset events here, and then 11113 * check for the other unit attention types after we check for a 11114 * reservation conflict. 11115 * 11116 * XXX KDM need to fix this 11117 */ 11118 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 11119 ctl_ua_type ua_type; 11120 11121 ua_type = lun->pending_sense[initidx].ua_pending; 11122 if (ua_type != CTL_UA_NONE) { 11123 scsi_sense_data_type sense_format; 11124 11125 if (lun != NULL) 11126 sense_format = (lun->flags & 11127 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 11128 SSD_TYPE_FIXED; 11129 else 11130 sense_format = SSD_TYPE_FIXED; 11131 11132 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 11133 sense_format); 11134 if (ua_type != CTL_UA_NONE) { 11135 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 11136 ctsio->io_hdr.status = CTL_SCSI_ERROR | 11137 CTL_AUTOSENSE; 11138 ctsio->sense_len = SSD_FULL_SIZE; 11139 lun->pending_sense[initidx].ua_pending &= 11140 ~ua_type; 11141 mtx_unlock(&lun->lun_lock); 11142 ctl_done((union ctl_io *)ctsio); 11143 return (retval); 11144 } 11145 } 11146 } 11147 11148 11149 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 11150 mtx_unlock(&lun->lun_lock); 11151 ctl_done((union ctl_io *)ctsio); 11152 return (retval); 11153 } 11154 11155 /* 11156 * XXX CHD this is where we want to send IO to other side if 11157 * this LUN is secondary on this SC. We will need to make a copy 11158 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 11159 * the copy we send as FROM_OTHER. 11160 * We also need to stuff the address of the original IO so we can 11161 * find it easily. Something similar will need be done on the other 11162 * side so when we are done we can find the copy. 11163 */ 11164 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 11165 union ctl_ha_msg msg_info; 11166 int isc_retval; 11167 11168 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11169 11170 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 11171 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 11172#if 0 11173 printf("1. ctsio %p\n", ctsio); 11174#endif 11175 msg_info.hdr.serializing_sc = NULL; 11176 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 11177 msg_info.scsi.tag_num = ctsio->tag_num; 11178 msg_info.scsi.tag_type = ctsio->tag_type; 11179 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 11180 11181 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11182 11183 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11184 (void *)&msg_info, sizeof(msg_info), 0)) > 11185 CTL_HA_STATUS_SUCCESS) { 11186 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 11187 isc_retval); 11188 printf("CTL:opcode is %x\n",opcode); 11189 } else { 11190#if 0 11191 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 11192#endif 11193 } 11194 11195 /* 11196 * XXX KDM this I/O is off the incoming queue, but hasn't 11197 * been inserted on any other queue. We may need to come 11198 * up with a holding queue while we wait for serialization 11199 * so that we have an idea of what we're waiting for from 11200 * the other side. 11201 */ 11202 mtx_unlock(&lun->lun_lock); 11203 return (retval); 11204 } 11205 11206 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 11207 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 11208 ctl_ooaq, ooa_links))) { 11209 case CTL_ACTION_BLOCK: 11210 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 11211 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 11212 blocked_links); 11213 mtx_unlock(&lun->lun_lock); 11214 return (retval); 11215 case CTL_ACTION_PASS: 11216 case CTL_ACTION_SKIP: 11217 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11218 mtx_unlock(&lun->lun_lock); 11219 ctl_enqueue_rtr((union ctl_io *)ctsio); 11220 break; 11221 case CTL_ACTION_OVERLAP: 11222 mtx_unlock(&lun->lun_lock); 11223 ctl_set_overlapped_cmd(ctsio); 11224 ctl_done((union ctl_io *)ctsio); 11225 break; 11226 case CTL_ACTION_OVERLAP_TAG: 11227 mtx_unlock(&lun->lun_lock); 11228 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 11229 ctl_done((union ctl_io *)ctsio); 11230 break; 11231 case CTL_ACTION_ERROR: 11232 default: 11233 mtx_unlock(&lun->lun_lock); 11234 ctl_set_internal_failure(ctsio, 11235 /*sks_valid*/ 0, 11236 /*retry_count*/ 0); 11237 ctl_done((union ctl_io *)ctsio); 11238 break; 11239 } 11240 return (retval); 11241} 11242 11243static int 11244ctl_scsiio(struct ctl_scsiio *ctsio) 11245{ 11246 int retval; 11247 struct ctl_cmd_entry *entry; 11248 11249 retval = CTL_RETVAL_COMPLETE; 11250 11251 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 11252 11253 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11254 11255 /* 11256 * If this I/O has been aborted, just send it straight to 11257 * ctl_done() without executing it. 11258 */ 11259 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11260 ctl_done((union ctl_io *)ctsio); 11261 goto bailout; 11262 } 11263 11264 /* 11265 * All the checks should have been handled by ctl_scsiio_precheck(). 11266 * We should be clear now to just execute the I/O. 11267 */ 11268 retval = entry->execute(ctsio); 11269 11270bailout: 11271 return (retval); 11272} 11273 11274/* 11275 * Since we only implement one target right now, a bus reset simply resets 11276 * our single target. 11277 */ 11278static int 11279ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11280{ 11281 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11282} 11283 11284static int 11285ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11286 ctl_ua_type ua_type) 11287{ 11288 struct ctl_lun *lun; 11289 int retval; 11290 11291 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11292 union ctl_ha_msg msg_info; 11293 11294 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11295 msg_info.hdr.nexus = io->io_hdr.nexus; 11296 if (ua_type==CTL_UA_TARG_RESET) 11297 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11298 else 11299 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11300 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11301 msg_info.hdr.original_sc = NULL; 11302 msg_info.hdr.serializing_sc = NULL; 11303 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11304 (void *)&msg_info, sizeof(msg_info), 0)) { 11305 } 11306 } 11307 retval = 0; 11308 11309 mtx_lock(&ctl_softc->ctl_lock); 11310 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11311 retval += ctl_lun_reset(lun, io, ua_type); 11312 mtx_unlock(&ctl_softc->ctl_lock); 11313 11314 return (retval); 11315} 11316 11317/* 11318 * The LUN should always be set. The I/O is optional, and is used to 11319 * distinguish between I/Os sent by this initiator, and by other 11320 * initiators. We set unit attention for initiators other than this one. 11321 * SAM-3 is vague on this point. It does say that a unit attention should 11322 * be established for other initiators when a LUN is reset (see section 11323 * 5.7.3), but it doesn't specifically say that the unit attention should 11324 * be established for this particular initiator when a LUN is reset. Here 11325 * is the relevant text, from SAM-3 rev 8: 11326 * 11327 * 5.7.2 When a SCSI initiator port aborts its own tasks 11328 * 11329 * When a SCSI initiator port causes its own task(s) to be aborted, no 11330 * notification that the task(s) have been aborted shall be returned to 11331 * the SCSI initiator port other than the completion response for the 11332 * command or task management function action that caused the task(s) to 11333 * be aborted and notification(s) associated with related effects of the 11334 * action (e.g., a reset unit attention condition). 11335 * 11336 * XXX KDM for now, we're setting unit attention for all initiators. 11337 */ 11338static int 11339ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11340{ 11341 union ctl_io *xio; 11342#if 0 11343 uint32_t initindex; 11344#endif 11345 int i; 11346 11347 mtx_lock(&lun->lun_lock); 11348 /* 11349 * Run through the OOA queue and abort each I/O. 11350 */ 11351#if 0 11352 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11353#endif 11354 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11355 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11356 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11357 } 11358 11359 /* 11360 * This version sets unit attention for every 11361 */ 11362#if 0 11363 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11364 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11365 if (initindex == i) 11366 continue; 11367 lun->pending_sense[i].ua_pending |= ua_type; 11368 } 11369#endif 11370 11371 /* 11372 * A reset (any kind, really) clears reservations established with 11373 * RESERVE/RELEASE. It does not clear reservations established 11374 * with PERSISTENT RESERVE OUT, but we don't support that at the 11375 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11376 * reservations made with the RESERVE/RELEASE commands, because 11377 * those commands are obsolete in SPC-3. 11378 */ 11379 lun->flags &= ~CTL_LUN_RESERVED; 11380 11381 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11382 ctl_clear_mask(lun->have_ca, i); 11383 lun->pending_sense[i].ua_pending |= ua_type; 11384 } 11385 mtx_lock(&lun->lun_lock); 11386 11387 return (0); 11388} 11389 11390static int 11391ctl_abort_task(union ctl_io *io) 11392{ 11393 union ctl_io *xio; 11394 struct ctl_lun *lun; 11395 struct ctl_softc *ctl_softc; 11396#if 0 11397 struct sbuf sb; 11398 char printbuf[128]; 11399#endif 11400 int found; 11401 uint32_t targ_lun; 11402 11403 ctl_softc = control_softc; 11404 found = 0; 11405 11406 /* 11407 * Look up the LUN. 11408 */ 11409 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11410 mtx_lock(&ctl_softc->ctl_lock); 11411 if ((targ_lun < CTL_MAX_LUNS) 11412 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11413 lun = ctl_softc->ctl_luns[targ_lun]; 11414 else { 11415 mtx_unlock(&ctl_softc->ctl_lock); 11416 goto bailout; 11417 } 11418 11419#if 0 11420 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11421 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11422#endif 11423 11424 mtx_lock(&lun->lun_lock); 11425 mtx_unlock(&ctl_softc->ctl_lock); 11426 /* 11427 * Run through the OOA queue and attempt to find the given I/O. 11428 * The target port, initiator ID, tag type and tag number have to 11429 * match the values that we got from the initiator. If we have an 11430 * untagged command to abort, simply abort the first untagged command 11431 * we come to. We only allow one untagged command at a time of course. 11432 */ 11433#if 0 11434 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11435#endif 11436 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11437 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11438#if 0 11439 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11440 11441 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11442 lun->lun, xio->scsiio.tag_num, 11443 xio->scsiio.tag_type, 11444 (xio->io_hdr.blocked_links.tqe_prev 11445 == NULL) ? "" : " BLOCKED", 11446 (xio->io_hdr.flags & 11447 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11448 (xio->io_hdr.flags & 11449 CTL_FLAG_ABORT) ? " ABORT" : "", 11450 (xio->io_hdr.flags & 11451 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11452 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11453 sbuf_finish(&sb); 11454 printf("%s\n", sbuf_data(&sb)); 11455#endif 11456 11457 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11458 && (xio->io_hdr.nexus.initid.id == 11459 io->io_hdr.nexus.initid.id)) { 11460 /* 11461 * If the abort says that the task is untagged, the 11462 * task in the queue must be untagged. Otherwise, 11463 * we just check to see whether the tag numbers 11464 * match. This is because the QLogic firmware 11465 * doesn't pass back the tag type in an abort 11466 * request. 11467 */ 11468#if 0 11469 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11470 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11471 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11472#endif 11473 /* 11474 * XXX KDM we've got problems with FC, because it 11475 * doesn't send down a tag type with aborts. So we 11476 * can only really go by the tag number... 11477 * This may cause problems with parallel SCSI. 11478 * Need to figure that out!! 11479 */ 11480 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11481 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11482 found = 1; 11483 if ((io->io_hdr.flags & 11484 CTL_FLAG_FROM_OTHER_SC) == 0 && 11485 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11486 union ctl_ha_msg msg_info; 11487 11488 io->io_hdr.flags |= 11489 CTL_FLAG_SENT_2OTHER_SC; 11490 msg_info.hdr.nexus = io->io_hdr.nexus; 11491 msg_info.task.task_action = 11492 CTL_TASK_ABORT_TASK; 11493 msg_info.task.tag_num = 11494 io->taskio.tag_num; 11495 msg_info.task.tag_type = 11496 io->taskio.tag_type; 11497 msg_info.hdr.msg_type = 11498 CTL_MSG_MANAGE_TASKS; 11499 msg_info.hdr.original_sc = NULL; 11500 msg_info.hdr.serializing_sc = NULL; 11501#if 0 11502 printf("Sent Abort to other side\n"); 11503#endif 11504 if (CTL_HA_STATUS_SUCCESS != 11505 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11506 (void *)&msg_info, 11507 sizeof(msg_info), 0)) { 11508 } 11509 } 11510#if 0 11511 printf("ctl_abort_task: found I/O to abort\n"); 11512#endif 11513 break; 11514 } 11515 } 11516 } 11517 mtx_unlock(&lun->lun_lock); 11518 11519bailout: 11520 11521 if (found == 0) { 11522 /* 11523 * This isn't really an error. It's entirely possible for 11524 * the abort and command completion to cross on the wire. 11525 * This is more of an informative/diagnostic error. 11526 */ 11527#if 0 11528 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11529 "%d:%d:%d:%d tag %d type %d\n", 11530 io->io_hdr.nexus.initid.id, 11531 io->io_hdr.nexus.targ_port, 11532 io->io_hdr.nexus.targ_target.id, 11533 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11534 io->taskio.tag_type); 11535#endif 11536 return (1); 11537 } else 11538 return (0); 11539} 11540 11541/* 11542 * This routine cannot block! It must be callable from an interrupt 11543 * handler as well as from the work thread. 11544 */ 11545static void 11546ctl_run_task(union ctl_io *io) 11547{ 11548 struct ctl_softc *ctl_softc; 11549 int retval; 11550 const char *task_desc; 11551 11552 CTL_DEBUG_PRINT(("ctl_run_task\n")); 11553 11554 ctl_softc = control_softc; 11555 retval = 0; 11556 11557 KASSERT(io->io_hdr.io_type == CTL_IO_TASK, 11558 ("ctl_run_task: Unextected io_type %d\n", 11559 io->io_hdr.io_type)); 11560 11561 task_desc = ctl_scsi_task_string(&io->taskio); 11562 if (task_desc != NULL) { 11563#ifdef NEEDTOPORT 11564 csevent_log(CSC_CTL | CSC_SHELF_SW | 11565 CTL_TASK_REPORT, 11566 csevent_LogType_Trace, 11567 csevent_Severity_Information, 11568 csevent_AlertLevel_Green, 11569 csevent_FRU_Firmware, 11570 csevent_FRU_Unknown, 11571 "CTL: received task: %s",task_desc); 11572#endif 11573 } else { 11574#ifdef NEEDTOPORT 11575 csevent_log(CSC_CTL | CSC_SHELF_SW | 11576 CTL_TASK_REPORT, 11577 csevent_LogType_Trace, 11578 csevent_Severity_Information, 11579 csevent_AlertLevel_Green, 11580 csevent_FRU_Firmware, 11581 csevent_FRU_Unknown, 11582 "CTL: received unknown task " 11583 "type: %d (%#x)", 11584 io->taskio.task_action, 11585 io->taskio.task_action); 11586#endif 11587 } 11588 switch (io->taskio.task_action) { 11589 case CTL_TASK_ABORT_TASK: 11590 retval = ctl_abort_task(io); 11591 break; 11592 case CTL_TASK_ABORT_TASK_SET: 11593 break; 11594 case CTL_TASK_CLEAR_ACA: 11595 break; 11596 case CTL_TASK_CLEAR_TASK_SET: 11597 break; 11598 case CTL_TASK_LUN_RESET: { 11599 struct ctl_lun *lun; 11600 uint32_t targ_lun; 11601 int retval; 11602 11603 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11604 mtx_lock(&ctl_softc->ctl_lock); 11605 if ((targ_lun < CTL_MAX_LUNS) 11606 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11607 lun = ctl_softc->ctl_luns[targ_lun]; 11608 else { 11609 mtx_unlock(&ctl_softc->ctl_lock); 11610 retval = 1; 11611 break; 11612 } 11613 11614 if (!(io->io_hdr.flags & 11615 CTL_FLAG_FROM_OTHER_SC)) { 11616 union ctl_ha_msg msg_info; 11617 11618 io->io_hdr.flags |= 11619 CTL_FLAG_SENT_2OTHER_SC; 11620 msg_info.hdr.msg_type = 11621 CTL_MSG_MANAGE_TASKS; 11622 msg_info.hdr.nexus = io->io_hdr.nexus; 11623 msg_info.task.task_action = 11624 CTL_TASK_LUN_RESET; 11625 msg_info.hdr.original_sc = NULL; 11626 msg_info.hdr.serializing_sc = NULL; 11627 if (CTL_HA_STATUS_SUCCESS != 11628 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11629 (void *)&msg_info, 11630 sizeof(msg_info), 0)) { 11631 } 11632 } 11633 11634 retval = ctl_lun_reset(lun, io, 11635 CTL_UA_LUN_RESET); 11636 mtx_unlock(&ctl_softc->ctl_lock); 11637 break; 11638 } 11639 case CTL_TASK_TARGET_RESET: 11640 retval = ctl_target_reset(ctl_softc, io, CTL_UA_TARG_RESET); 11641 break; 11642 case CTL_TASK_BUS_RESET: 11643 retval = ctl_bus_reset(ctl_softc, io); 11644 break; 11645 case CTL_TASK_PORT_LOGIN: 11646 break; 11647 case CTL_TASK_PORT_LOGOUT: 11648 break; 11649 default: 11650 printf("ctl_run_task: got unknown task management event %d\n", 11651 io->taskio.task_action); 11652 break; 11653 } 11654 if (retval == 0) 11655 io->io_hdr.status = CTL_SUCCESS; 11656 else 11657 io->io_hdr.status = CTL_ERROR; 11658 11659 /* 11660 * This will queue this I/O to the done queue, but the 11661 * work thread won't be able to process it until we 11662 * return and the lock is released. 11663 */ 11664 ctl_done(io); 11665} 11666 11667/* 11668 * For HA operation. Handle commands that come in from the other 11669 * controller. 11670 */ 11671static void 11672ctl_handle_isc(union ctl_io *io) 11673{ 11674 int free_io; 11675 struct ctl_lun *lun; 11676 struct ctl_softc *ctl_softc; 11677 uint32_t targ_lun; 11678 11679 ctl_softc = control_softc; 11680 11681 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11682 lun = ctl_softc->ctl_luns[targ_lun]; 11683 11684 switch (io->io_hdr.msg_type) { 11685 case CTL_MSG_SERIALIZE: 11686 free_io = ctl_serialize_other_sc_cmd(&io->scsiio); 11687 break; 11688 case CTL_MSG_R2R: { 11689 uint8_t opcode; 11690 struct ctl_cmd_entry *entry; 11691 11692 /* 11693 * This is only used in SER_ONLY mode. 11694 */ 11695 free_io = 0; 11696 opcode = io->scsiio.cdb[0]; 11697 entry = &ctl_cmd_table[opcode]; 11698 mtx_lock(&lun->lun_lock); 11699 if (ctl_scsiio_lun_check(ctl_softc, lun, 11700 entry, (struct ctl_scsiio *)io) != 0) { 11701 mtx_unlock(&lun->lun_lock); 11702 ctl_done(io); 11703 break; 11704 } 11705 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11706 mtx_unlock(&lun->lun_lock); 11707 ctl_enqueue_rtr(io); 11708 break; 11709 } 11710 case CTL_MSG_FINISH_IO: 11711 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11712 free_io = 0; 11713 ctl_done(io); 11714 } else { 11715 free_io = 1; 11716 mtx_lock(&lun->lun_lock); 11717 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11718 ooa_links); 11719 ctl_check_blocked(lun); 11720 mtx_unlock(&lun->lun_lock); 11721 } 11722 break; 11723 case CTL_MSG_PERS_ACTION: 11724 ctl_hndl_per_res_out_on_other_sc( 11725 (union ctl_ha_msg *)&io->presio.pr_msg); 11726 free_io = 1; 11727 break; 11728 case CTL_MSG_BAD_JUJU: 11729 free_io = 0; 11730 ctl_done(io); 11731 break; 11732 case CTL_MSG_DATAMOVE: 11733 /* Only used in XFER mode */ 11734 free_io = 0; 11735 ctl_datamove_remote(io); 11736 break; 11737 case CTL_MSG_DATAMOVE_DONE: 11738 /* Only used in XFER mode */ 11739 free_io = 0; 11740 io->scsiio.be_move_done(io); 11741 break; 11742 default: 11743 free_io = 1; 11744 printf("%s: Invalid message type %d\n", 11745 __func__, io->io_hdr.msg_type); 11746 break; 11747 } 11748 if (free_io) 11749 ctl_free_io(io); 11750 11751} 11752 11753 11754/* 11755 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11756 * there is no match. 11757 */ 11758static ctl_lun_error_pattern 11759ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11760{ 11761 struct ctl_cmd_entry *entry; 11762 ctl_lun_error_pattern filtered_pattern, pattern; 11763 uint8_t opcode; 11764 11765 pattern = desc->error_pattern; 11766 11767 /* 11768 * XXX KDM we need more data passed into this function to match a 11769 * custom pattern, and we actually need to implement custom pattern 11770 * matching. 11771 */ 11772 if (pattern & CTL_LUN_PAT_CMD) 11773 return (CTL_LUN_PAT_CMD); 11774 11775 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11776 return (CTL_LUN_PAT_ANY); 11777 11778 opcode = ctsio->cdb[0]; 11779 entry = &ctl_cmd_table[opcode]; 11780 11781 filtered_pattern = entry->pattern & pattern; 11782 11783 /* 11784 * If the user requested specific flags in the pattern (e.g. 11785 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11786 * flags. 11787 * 11788 * If the user did not specify any flags, it doesn't matter whether 11789 * or not the command supports the flags. 11790 */ 11791 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11792 (pattern & ~CTL_LUN_PAT_MASK)) 11793 return (CTL_LUN_PAT_NONE); 11794 11795 /* 11796 * If the user asked for a range check, see if the requested LBA 11797 * range overlaps with this command's LBA range. 11798 */ 11799 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11800 uint64_t lba1; 11801 uint32_t len1; 11802 ctl_action action; 11803 int retval; 11804 11805 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11806 if (retval != 0) 11807 return (CTL_LUN_PAT_NONE); 11808 11809 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11810 desc->lba_range.len); 11811 /* 11812 * A "pass" means that the LBA ranges don't overlap, so 11813 * this doesn't match the user's range criteria. 11814 */ 11815 if (action == CTL_ACTION_PASS) 11816 return (CTL_LUN_PAT_NONE); 11817 } 11818 11819 return (filtered_pattern); 11820} 11821 11822static void 11823ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11824{ 11825 struct ctl_error_desc *desc, *desc2; 11826 11827 mtx_assert(&lun->lun_lock, MA_OWNED); 11828 11829 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11830 ctl_lun_error_pattern pattern; 11831 /* 11832 * Check to see whether this particular command matches 11833 * the pattern in the descriptor. 11834 */ 11835 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11836 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11837 continue; 11838 11839 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11840 case CTL_LUN_INJ_ABORTED: 11841 ctl_set_aborted(&io->scsiio); 11842 break; 11843 case CTL_LUN_INJ_MEDIUM_ERR: 11844 ctl_set_medium_error(&io->scsiio); 11845 break; 11846 case CTL_LUN_INJ_UA: 11847 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11848 * OCCURRED */ 11849 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11850 break; 11851 case CTL_LUN_INJ_CUSTOM: 11852 /* 11853 * We're assuming the user knows what he is doing. 11854 * Just copy the sense information without doing 11855 * checks. 11856 */ 11857 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11858 ctl_min(sizeof(desc->custom_sense), 11859 sizeof(io->scsiio.sense_data))); 11860 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11861 io->scsiio.sense_len = SSD_FULL_SIZE; 11862 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11863 break; 11864 case CTL_LUN_INJ_NONE: 11865 default: 11866 /* 11867 * If this is an error injection type we don't know 11868 * about, clear the continuous flag (if it is set) 11869 * so it will get deleted below. 11870 */ 11871 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11872 break; 11873 } 11874 /* 11875 * By default, each error injection action is a one-shot 11876 */ 11877 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11878 continue; 11879 11880 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11881 11882 free(desc, M_CTL); 11883 } 11884} 11885 11886#ifdef CTL_IO_DELAY 11887static void 11888ctl_datamove_timer_wakeup(void *arg) 11889{ 11890 union ctl_io *io; 11891 11892 io = (union ctl_io *)arg; 11893 11894 ctl_datamove(io); 11895} 11896#endif /* CTL_IO_DELAY */ 11897 11898void 11899ctl_datamove(union ctl_io *io) 11900{ 11901 void (*fe_datamove)(union ctl_io *io); 11902 11903 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 11904 11905 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11906 11907#ifdef CTL_TIME_IO 11908 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11909 char str[256]; 11910 char path_str[64]; 11911 struct sbuf sb; 11912 11913 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11914 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11915 11916 sbuf_cat(&sb, path_str); 11917 switch (io->io_hdr.io_type) { 11918 case CTL_IO_SCSI: 11919 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11920 sbuf_printf(&sb, "\n"); 11921 sbuf_cat(&sb, path_str); 11922 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11923 io->scsiio.tag_num, io->scsiio.tag_type); 11924 break; 11925 case CTL_IO_TASK: 11926 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11927 "Tag Type: %d\n", io->taskio.task_action, 11928 io->taskio.tag_num, io->taskio.tag_type); 11929 break; 11930 default: 11931 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11932 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11933 break; 11934 } 11935 sbuf_cat(&sb, path_str); 11936 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11937 (intmax_t)time_uptime - io->io_hdr.start_time); 11938 sbuf_finish(&sb); 11939 printf("%s", sbuf_data(&sb)); 11940 } 11941#endif /* CTL_TIME_IO */ 11942 11943#ifdef CTL_IO_DELAY 11944 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11945 struct ctl_lun *lun; 11946 11947 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11948 11949 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11950 } else { 11951 struct ctl_lun *lun; 11952 11953 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11954 if ((lun != NULL) 11955 && (lun->delay_info.datamove_delay > 0)) { 11956 struct callout *callout; 11957 11958 callout = (struct callout *)&io->io_hdr.timer_bytes; 11959 callout_init(callout, /*mpsafe*/ 1); 11960 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11961 callout_reset(callout, 11962 lun->delay_info.datamove_delay * hz, 11963 ctl_datamove_timer_wakeup, io); 11964 if (lun->delay_info.datamove_type == 11965 CTL_DELAY_TYPE_ONESHOT) 11966 lun->delay_info.datamove_delay = 0; 11967 return; 11968 } 11969 } 11970#endif 11971 11972 /* 11973 * This command has been aborted. Set the port status, so we fail 11974 * the data move. 11975 */ 11976 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11977 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11978 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11979 io->io_hdr.nexus.targ_port, 11980 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11981 io->io_hdr.nexus.targ_lun); 11982 io->io_hdr.status = CTL_CMD_ABORTED; 11983 io->io_hdr.port_status = 31337; 11984 /* 11985 * Note that the backend, in this case, will get the 11986 * callback in its context. In other cases it may get 11987 * called in the frontend's interrupt thread context. 11988 */ 11989 io->scsiio.be_move_done(io); 11990 return; 11991 } 11992 11993 /* 11994 * If we're in XFER mode and this I/O is from the other shelf 11995 * controller, we need to send the DMA to the other side to 11996 * actually transfer the data to/from the host. In serialize only 11997 * mode the transfer happens below CTL and ctl_datamove() is only 11998 * called on the machine that originally received the I/O. 11999 */ 12000 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 12001 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12002 union ctl_ha_msg msg; 12003 uint32_t sg_entries_sent; 12004 int do_sg_copy; 12005 int i; 12006 12007 memset(&msg, 0, sizeof(msg)); 12008 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 12009 msg.hdr.original_sc = io->io_hdr.original_sc; 12010 msg.hdr.serializing_sc = io; 12011 msg.hdr.nexus = io->io_hdr.nexus; 12012 msg.dt.flags = io->io_hdr.flags; 12013 /* 12014 * We convert everything into a S/G list here. We can't 12015 * pass by reference, only by value between controllers. 12016 * So we can't pass a pointer to the S/G list, only as many 12017 * S/G entries as we can fit in here. If it's possible for 12018 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 12019 * then we need to break this up into multiple transfers. 12020 */ 12021 if (io->scsiio.kern_sg_entries == 0) { 12022 msg.dt.kern_sg_entries = 1; 12023 /* 12024 * If this is in cached memory, flush the cache 12025 * before we send the DMA request to the other 12026 * controller. We want to do this in either the 12027 * read or the write case. The read case is 12028 * straightforward. In the write case, we want to 12029 * make sure nothing is in the local cache that 12030 * could overwrite the DMAed data. 12031 */ 12032 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12033 /* 12034 * XXX KDM use bus_dmamap_sync() here. 12035 */ 12036 } 12037 12038 /* 12039 * Convert to a physical address if this is a 12040 * virtual address. 12041 */ 12042 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 12043 msg.dt.sg_list[0].addr = 12044 io->scsiio.kern_data_ptr; 12045 } else { 12046 /* 12047 * XXX KDM use busdma here! 12048 */ 12049#if 0 12050 msg.dt.sg_list[0].addr = (void *) 12051 vtophys(io->scsiio.kern_data_ptr); 12052#endif 12053 } 12054 12055 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 12056 do_sg_copy = 0; 12057 } else { 12058 struct ctl_sg_entry *sgl; 12059 12060 do_sg_copy = 1; 12061 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 12062 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 12063 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12064 /* 12065 * XXX KDM use bus_dmamap_sync() here. 12066 */ 12067 } 12068 } 12069 12070 msg.dt.kern_data_len = io->scsiio.kern_data_len; 12071 msg.dt.kern_total_len = io->scsiio.kern_total_len; 12072 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 12073 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 12074 msg.dt.sg_sequence = 0; 12075 12076 /* 12077 * Loop until we've sent all of the S/G entries. On the 12078 * other end, we'll recompose these S/G entries into one 12079 * contiguous list before passing it to the 12080 */ 12081 for (sg_entries_sent = 0; sg_entries_sent < 12082 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 12083 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 12084 sizeof(msg.dt.sg_list[0])), 12085 msg.dt.kern_sg_entries - sg_entries_sent); 12086 12087 if (do_sg_copy != 0) { 12088 struct ctl_sg_entry *sgl; 12089 int j; 12090 12091 sgl = (struct ctl_sg_entry *) 12092 io->scsiio.kern_data_ptr; 12093 /* 12094 * If this is in cached memory, flush the cache 12095 * before we send the DMA request to the other 12096 * controller. We want to do this in either 12097 * the * read or the write case. The read 12098 * case is straightforward. In the write 12099 * case, we want to make sure nothing is 12100 * in the local cache that could overwrite 12101 * the DMAed data. 12102 */ 12103 12104 for (i = sg_entries_sent, j = 0; 12105 i < msg.dt.cur_sg_entries; i++, j++) { 12106 if ((io->io_hdr.flags & 12107 CTL_FLAG_NO_DATASYNC) == 0) { 12108 /* 12109 * XXX KDM use bus_dmamap_sync() 12110 */ 12111 } 12112 if ((io->io_hdr.flags & 12113 CTL_FLAG_BUS_ADDR) == 0) { 12114 /* 12115 * XXX KDM use busdma. 12116 */ 12117#if 0 12118 msg.dt.sg_list[j].addr =(void *) 12119 vtophys(sgl[i].addr); 12120#endif 12121 } else { 12122 msg.dt.sg_list[j].addr = 12123 sgl[i].addr; 12124 } 12125 msg.dt.sg_list[j].len = sgl[i].len; 12126 } 12127 } 12128 12129 sg_entries_sent += msg.dt.cur_sg_entries; 12130 if (sg_entries_sent >= msg.dt.kern_sg_entries) 12131 msg.dt.sg_last = 1; 12132 else 12133 msg.dt.sg_last = 0; 12134 12135 /* 12136 * XXX KDM drop and reacquire the lock here? 12137 */ 12138 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12139 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12140 /* 12141 * XXX do something here. 12142 */ 12143 } 12144 12145 msg.dt.sent_sg_entries = sg_entries_sent; 12146 } 12147 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12148 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 12149 ctl_failover_io(io, /*have_lock*/ 0); 12150 12151 } else { 12152 12153 /* 12154 * Lookup the fe_datamove() function for this particular 12155 * front end. 12156 */ 12157 fe_datamove = 12158 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12159 12160 fe_datamove(io); 12161 } 12162} 12163 12164static void 12165ctl_send_datamove_done(union ctl_io *io, int have_lock) 12166{ 12167 union ctl_ha_msg msg; 12168 int isc_status; 12169 12170 memset(&msg, 0, sizeof(msg)); 12171 12172 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 12173 msg.hdr.original_sc = io; 12174 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 12175 msg.hdr.nexus = io->io_hdr.nexus; 12176 msg.hdr.status = io->io_hdr.status; 12177 msg.scsi.tag_num = io->scsiio.tag_num; 12178 msg.scsi.tag_type = io->scsiio.tag_type; 12179 msg.scsi.scsi_status = io->scsiio.scsi_status; 12180 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12181 sizeof(io->scsiio.sense_data)); 12182 msg.scsi.sense_len = io->scsiio.sense_len; 12183 msg.scsi.sense_residual = io->scsiio.sense_residual; 12184 msg.scsi.fetd_status = io->io_hdr.port_status; 12185 msg.scsi.residual = io->scsiio.residual; 12186 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12187 12188 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12189 ctl_failover_io(io, /*have_lock*/ have_lock); 12190 return; 12191 } 12192 12193 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 12194 if (isc_status > CTL_HA_STATUS_SUCCESS) { 12195 /* XXX do something if this fails */ 12196 } 12197 12198} 12199 12200/* 12201 * The DMA to the remote side is done, now we need to tell the other side 12202 * we're done so it can continue with its data movement. 12203 */ 12204static void 12205ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12206{ 12207 union ctl_io *io; 12208 12209 io = rq->context; 12210 12211 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12212 printf("%s: ISC DMA write failed with error %d", __func__, 12213 rq->ret); 12214 ctl_set_internal_failure(&io->scsiio, 12215 /*sks_valid*/ 1, 12216 /*retry_count*/ rq->ret); 12217 } 12218 12219 ctl_dt_req_free(rq); 12220 12221 /* 12222 * In this case, we had to malloc the memory locally. Free it. 12223 */ 12224 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12225 int i; 12226 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12227 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12228 } 12229 /* 12230 * The data is in local and remote memory, so now we need to send 12231 * status (good or back) back to the other side. 12232 */ 12233 ctl_send_datamove_done(io, /*have_lock*/ 0); 12234} 12235 12236/* 12237 * We've moved the data from the host/controller into local memory. Now we 12238 * need to push it over to the remote controller's memory. 12239 */ 12240static int 12241ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12242{ 12243 int retval; 12244 12245 retval = 0; 12246 12247 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12248 ctl_datamove_remote_write_cb); 12249 12250 return (retval); 12251} 12252 12253static void 12254ctl_datamove_remote_write(union ctl_io *io) 12255{ 12256 int retval; 12257 void (*fe_datamove)(union ctl_io *io); 12258 12259 /* 12260 * - Get the data from the host/HBA into local memory. 12261 * - DMA memory from the local controller to the remote controller. 12262 * - Send status back to the remote controller. 12263 */ 12264 12265 retval = ctl_datamove_remote_sgl_setup(io); 12266 if (retval != 0) 12267 return; 12268 12269 /* Switch the pointer over so the FETD knows what to do */ 12270 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12271 12272 /* 12273 * Use a custom move done callback, since we need to send completion 12274 * back to the other controller, not to the backend on this side. 12275 */ 12276 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12277 12278 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12279 12280 fe_datamove(io); 12281 12282 return; 12283 12284} 12285 12286static int 12287ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12288{ 12289#if 0 12290 char str[256]; 12291 char path_str[64]; 12292 struct sbuf sb; 12293#endif 12294 12295 /* 12296 * In this case, we had to malloc the memory locally. Free it. 12297 */ 12298 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12299 int i; 12300 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12301 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12302 } 12303 12304#if 0 12305 scsi_path_string(io, path_str, sizeof(path_str)); 12306 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12307 sbuf_cat(&sb, path_str); 12308 scsi_command_string(&io->scsiio, NULL, &sb); 12309 sbuf_printf(&sb, "\n"); 12310 sbuf_cat(&sb, path_str); 12311 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12312 io->scsiio.tag_num, io->scsiio.tag_type); 12313 sbuf_cat(&sb, path_str); 12314 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12315 io->io_hdr.flags, io->io_hdr.status); 12316 sbuf_finish(&sb); 12317 printk("%s", sbuf_data(&sb)); 12318#endif 12319 12320 12321 /* 12322 * The read is done, now we need to send status (good or bad) back 12323 * to the other side. 12324 */ 12325 ctl_send_datamove_done(io, /*have_lock*/ 0); 12326 12327 return (0); 12328} 12329 12330static void 12331ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12332{ 12333 union ctl_io *io; 12334 void (*fe_datamove)(union ctl_io *io); 12335 12336 io = rq->context; 12337 12338 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12339 printf("%s: ISC DMA read failed with error %d", __func__, 12340 rq->ret); 12341 ctl_set_internal_failure(&io->scsiio, 12342 /*sks_valid*/ 1, 12343 /*retry_count*/ rq->ret); 12344 } 12345 12346 ctl_dt_req_free(rq); 12347 12348 /* Switch the pointer over so the FETD knows what to do */ 12349 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12350 12351 /* 12352 * Use a custom move done callback, since we need to send completion 12353 * back to the other controller, not to the backend on this side. 12354 */ 12355 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12356 12357 /* XXX KDM add checks like the ones in ctl_datamove? */ 12358 12359 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12360 12361 fe_datamove(io); 12362} 12363 12364static int 12365ctl_datamove_remote_sgl_setup(union ctl_io *io) 12366{ 12367 struct ctl_sg_entry *local_sglist, *remote_sglist; 12368 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12369 struct ctl_softc *softc; 12370 int retval; 12371 int i; 12372 12373 retval = 0; 12374 softc = control_softc; 12375 12376 local_sglist = io->io_hdr.local_sglist; 12377 local_dma_sglist = io->io_hdr.local_dma_sglist; 12378 remote_sglist = io->io_hdr.remote_sglist; 12379 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12380 12381 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12382 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12383 local_sglist[i].len = remote_sglist[i].len; 12384 12385 /* 12386 * XXX Detect the situation where the RS-level I/O 12387 * redirector on the other side has already read the 12388 * data off of the AOR RS on this side, and 12389 * transferred it to remote (mirror) memory on the 12390 * other side. Since we already have the data in 12391 * memory here, we just need to use it. 12392 * 12393 * XXX KDM this can probably be removed once we 12394 * get the cache device code in and take the 12395 * current AOR implementation out. 12396 */ 12397#ifdef NEEDTOPORT 12398 if ((remote_sglist[i].addr >= 12399 (void *)vtophys(softc->mirr->addr)) 12400 && (remote_sglist[i].addr < 12401 ((void *)vtophys(softc->mirr->addr) + 12402 CacheMirrorOffset))) { 12403 local_sglist[i].addr = remote_sglist[i].addr - 12404 CacheMirrorOffset; 12405 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12406 CTL_FLAG_DATA_IN) 12407 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12408 } else { 12409 local_sglist[i].addr = remote_sglist[i].addr + 12410 CacheMirrorOffset; 12411 } 12412#endif 12413#if 0 12414 printf("%s: local %p, remote %p, len %d\n", 12415 __func__, local_sglist[i].addr, 12416 remote_sglist[i].addr, local_sglist[i].len); 12417#endif 12418 } 12419 } else { 12420 uint32_t len_to_go; 12421 12422 /* 12423 * In this case, we don't have automatically allocated 12424 * memory for this I/O on this controller. This typically 12425 * happens with internal CTL I/O -- e.g. inquiry, mode 12426 * sense, etc. Anything coming from RAIDCore will have 12427 * a mirror area available. 12428 */ 12429 len_to_go = io->scsiio.kern_data_len; 12430 12431 /* 12432 * Clear the no datasync flag, we have to use malloced 12433 * buffers. 12434 */ 12435 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12436 12437 /* 12438 * The difficult thing here is that the size of the various 12439 * S/G segments may be different than the size from the 12440 * remote controller. That'll make it harder when DMAing 12441 * the data back to the other side. 12442 */ 12443 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12444 sizeof(io->io_hdr.remote_sglist[0])) && 12445 (len_to_go > 0); i++) { 12446 local_sglist[i].len = ctl_min(len_to_go, 131072); 12447 CTL_SIZE_8B(local_dma_sglist[i].len, 12448 local_sglist[i].len); 12449 local_sglist[i].addr = 12450 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12451 12452 local_dma_sglist[i].addr = local_sglist[i].addr; 12453 12454 if (local_sglist[i].addr == NULL) { 12455 int j; 12456 12457 printf("malloc failed for %zd bytes!", 12458 local_dma_sglist[i].len); 12459 for (j = 0; j < i; j++) { 12460 free(local_sglist[j].addr, M_CTL); 12461 } 12462 ctl_set_internal_failure(&io->scsiio, 12463 /*sks_valid*/ 1, 12464 /*retry_count*/ 4857); 12465 retval = 1; 12466 goto bailout_error; 12467 12468 } 12469 /* XXX KDM do we need a sync here? */ 12470 12471 len_to_go -= local_sglist[i].len; 12472 } 12473 /* 12474 * Reset the number of S/G entries accordingly. The 12475 * original number of S/G entries is available in 12476 * rem_sg_entries. 12477 */ 12478 io->scsiio.kern_sg_entries = i; 12479 12480#if 0 12481 printf("%s: kern_sg_entries = %d\n", __func__, 12482 io->scsiio.kern_sg_entries); 12483 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12484 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12485 local_sglist[i].addr, local_sglist[i].len, 12486 local_dma_sglist[i].len); 12487#endif 12488 } 12489 12490 12491 return (retval); 12492 12493bailout_error: 12494 12495 ctl_send_datamove_done(io, /*have_lock*/ 0); 12496 12497 return (retval); 12498} 12499 12500static int 12501ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12502 ctl_ha_dt_cb callback) 12503{ 12504 struct ctl_ha_dt_req *rq; 12505 struct ctl_sg_entry *remote_sglist, *local_sglist; 12506 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12507 uint32_t local_used, remote_used, total_used; 12508 int retval; 12509 int i, j; 12510 12511 retval = 0; 12512 12513 rq = ctl_dt_req_alloc(); 12514 12515 /* 12516 * If we failed to allocate the request, and if the DMA didn't fail 12517 * anyway, set busy status. This is just a resource allocation 12518 * failure. 12519 */ 12520 if ((rq == NULL) 12521 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12522 ctl_set_busy(&io->scsiio); 12523 12524 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12525 12526 if (rq != NULL) 12527 ctl_dt_req_free(rq); 12528 12529 /* 12530 * The data move failed. We need to return status back 12531 * to the other controller. No point in trying to DMA 12532 * data to the remote controller. 12533 */ 12534 12535 ctl_send_datamove_done(io, /*have_lock*/ 0); 12536 12537 retval = 1; 12538 12539 goto bailout; 12540 } 12541 12542 local_sglist = io->io_hdr.local_sglist; 12543 local_dma_sglist = io->io_hdr.local_dma_sglist; 12544 remote_sglist = io->io_hdr.remote_sglist; 12545 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12546 local_used = 0; 12547 remote_used = 0; 12548 total_used = 0; 12549 12550 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12551 rq->ret = CTL_HA_STATUS_SUCCESS; 12552 rq->context = io; 12553 callback(rq); 12554 goto bailout; 12555 } 12556 12557 /* 12558 * Pull/push the data over the wire from/to the other controller. 12559 * This takes into account the possibility that the local and 12560 * remote sglists may not be identical in terms of the size of 12561 * the elements and the number of elements. 12562 * 12563 * One fundamental assumption here is that the length allocated for 12564 * both the local and remote sglists is identical. Otherwise, we've 12565 * essentially got a coding error of some sort. 12566 */ 12567 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12568 int isc_ret; 12569 uint32_t cur_len, dma_length; 12570 uint8_t *tmp_ptr; 12571 12572 rq->id = CTL_HA_DATA_CTL; 12573 rq->command = command; 12574 rq->context = io; 12575 12576 /* 12577 * Both pointers should be aligned. But it is possible 12578 * that the allocation length is not. They should both 12579 * also have enough slack left over at the end, though, 12580 * to round up to the next 8 byte boundary. 12581 */ 12582 cur_len = ctl_min(local_sglist[i].len - local_used, 12583 remote_sglist[j].len - remote_used); 12584 12585 /* 12586 * In this case, we have a size issue and need to decrease 12587 * the size, except in the case where we actually have less 12588 * than 8 bytes left. In that case, we need to increase 12589 * the DMA length to get the last bit. 12590 */ 12591 if ((cur_len & 0x7) != 0) { 12592 if (cur_len > 0x7) { 12593 cur_len = cur_len - (cur_len & 0x7); 12594 dma_length = cur_len; 12595 } else { 12596 CTL_SIZE_8B(dma_length, cur_len); 12597 } 12598 12599 } else 12600 dma_length = cur_len; 12601 12602 /* 12603 * If we had to allocate memory for this I/O, instead of using 12604 * the non-cached mirror memory, we'll need to flush the cache 12605 * before trying to DMA to the other controller. 12606 * 12607 * We could end up doing this multiple times for the same 12608 * segment if we have a larger local segment than remote 12609 * segment. That shouldn't be an issue. 12610 */ 12611 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12612 /* 12613 * XXX KDM use bus_dmamap_sync() here. 12614 */ 12615 } 12616 12617 rq->size = dma_length; 12618 12619 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12620 tmp_ptr += local_used; 12621 12622 /* Use physical addresses when talking to ISC hardware */ 12623 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12624 /* XXX KDM use busdma */ 12625#if 0 12626 rq->local = vtophys(tmp_ptr); 12627#endif 12628 } else 12629 rq->local = tmp_ptr; 12630 12631 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12632 tmp_ptr += remote_used; 12633 rq->remote = tmp_ptr; 12634 12635 rq->callback = NULL; 12636 12637 local_used += cur_len; 12638 if (local_used >= local_sglist[i].len) { 12639 i++; 12640 local_used = 0; 12641 } 12642 12643 remote_used += cur_len; 12644 if (remote_used >= remote_sglist[j].len) { 12645 j++; 12646 remote_used = 0; 12647 } 12648 total_used += cur_len; 12649 12650 if (total_used >= io->scsiio.kern_data_len) 12651 rq->callback = callback; 12652 12653 if ((rq->size & 0x7) != 0) { 12654 printf("%s: warning: size %d is not on 8b boundary\n", 12655 __func__, rq->size); 12656 } 12657 if (((uintptr_t)rq->local & 0x7) != 0) { 12658 printf("%s: warning: local %p not on 8b boundary\n", 12659 __func__, rq->local); 12660 } 12661 if (((uintptr_t)rq->remote & 0x7) != 0) { 12662 printf("%s: warning: remote %p not on 8b boundary\n", 12663 __func__, rq->local); 12664 } 12665#if 0 12666 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12667 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12668 rq->local, rq->remote, rq->size); 12669#endif 12670 12671 isc_ret = ctl_dt_single(rq); 12672 if (isc_ret == CTL_HA_STATUS_WAIT) 12673 continue; 12674 12675 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12676 rq->ret = CTL_HA_STATUS_SUCCESS; 12677 } else { 12678 rq->ret = isc_ret; 12679 } 12680 callback(rq); 12681 goto bailout; 12682 } 12683 12684bailout: 12685 return (retval); 12686 12687} 12688 12689static void 12690ctl_datamove_remote_read(union ctl_io *io) 12691{ 12692 int retval; 12693 int i; 12694 12695 /* 12696 * This will send an error to the other controller in the case of a 12697 * failure. 12698 */ 12699 retval = ctl_datamove_remote_sgl_setup(io); 12700 if (retval != 0) 12701 return; 12702 12703 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12704 ctl_datamove_remote_read_cb); 12705 if ((retval != 0) 12706 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12707 /* 12708 * Make sure we free memory if there was an error.. The 12709 * ctl_datamove_remote_xfer() function will send the 12710 * datamove done message, or call the callback with an 12711 * error if there is a problem. 12712 */ 12713 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12714 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12715 } 12716 12717 return; 12718} 12719 12720/* 12721 * Process a datamove request from the other controller. This is used for 12722 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12723 * first. Once that is complete, the data gets DMAed into the remote 12724 * controller's memory. For reads, we DMA from the remote controller's 12725 * memory into our memory first, and then move it out to the FETD. 12726 */ 12727static void 12728ctl_datamove_remote(union ctl_io *io) 12729{ 12730 struct ctl_softc *softc; 12731 12732 softc = control_softc; 12733 12734 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12735 12736 /* 12737 * Note that we look for an aborted I/O here, but don't do some of 12738 * the other checks that ctl_datamove() normally does. We don't 12739 * need to run the task queue, because this I/O is on the ISC 12740 * queue, which is executed by the work thread after the task queue. 12741 * We don't need to run the datamove delay code, since that should 12742 * have been done if need be on the other controller. 12743 */ 12744 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12745 12746 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12747 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12748 io->io_hdr.nexus.targ_port, 12749 io->io_hdr.nexus.targ_target.id, 12750 io->io_hdr.nexus.targ_lun); 12751 io->io_hdr.status = CTL_CMD_ABORTED; 12752 io->io_hdr.port_status = 31338; 12753 12754 ctl_send_datamove_done(io, /*have_lock*/ 0); 12755 12756 return; 12757 } 12758 12759 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12760 ctl_datamove_remote_write(io); 12761 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12762 ctl_datamove_remote_read(io); 12763 } else { 12764 union ctl_ha_msg msg; 12765 struct scsi_sense_data *sense; 12766 uint8_t sks[3]; 12767 int retry_count; 12768 12769 memset(&msg, 0, sizeof(msg)); 12770 12771 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12772 msg.hdr.status = CTL_SCSI_ERROR; 12773 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12774 12775 retry_count = 4243; 12776 12777 sense = &msg.scsi.sense_data; 12778 sks[0] = SSD_SCS_VALID; 12779 sks[1] = (retry_count >> 8) & 0xff; 12780 sks[2] = retry_count & 0xff; 12781 12782 /* "Internal target failure" */ 12783 scsi_set_sense_data(sense, 12784 /*sense_format*/ SSD_TYPE_NONE, 12785 /*current_error*/ 1, 12786 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12787 /*asc*/ 0x44, 12788 /*ascq*/ 0x00, 12789 /*type*/ SSD_ELEM_SKS, 12790 /*size*/ sizeof(sks), 12791 /*data*/ sks, 12792 SSD_ELEM_NONE); 12793 12794 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12795 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12796 ctl_failover_io(io, /*have_lock*/ 1); 12797 return; 12798 } 12799 12800 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12801 CTL_HA_STATUS_SUCCESS) { 12802 /* XXX KDM what to do if this fails? */ 12803 } 12804 return; 12805 } 12806 12807} 12808 12809static int 12810ctl_process_done(union ctl_io *io) 12811{ 12812 struct ctl_lun *lun; 12813 struct ctl_softc *ctl_softc; 12814 void (*fe_done)(union ctl_io *io); 12815 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12816 12817 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12818 12819 fe_done = 12820 control_softc->ctl_ports[targ_port]->fe_done; 12821 12822#ifdef CTL_TIME_IO 12823 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12824 char str[256]; 12825 char path_str[64]; 12826 struct sbuf sb; 12827 12828 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12829 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12830 12831 sbuf_cat(&sb, path_str); 12832 switch (io->io_hdr.io_type) { 12833 case CTL_IO_SCSI: 12834 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12835 sbuf_printf(&sb, "\n"); 12836 sbuf_cat(&sb, path_str); 12837 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12838 io->scsiio.tag_num, io->scsiio.tag_type); 12839 break; 12840 case CTL_IO_TASK: 12841 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12842 "Tag Type: %d\n", io->taskio.task_action, 12843 io->taskio.tag_num, io->taskio.tag_type); 12844 break; 12845 default: 12846 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12847 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12848 break; 12849 } 12850 sbuf_cat(&sb, path_str); 12851 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12852 (intmax_t)time_uptime - io->io_hdr.start_time); 12853 sbuf_finish(&sb); 12854 printf("%s", sbuf_data(&sb)); 12855 } 12856#endif /* CTL_TIME_IO */ 12857 12858 switch (io->io_hdr.io_type) { 12859 case CTL_IO_SCSI: 12860 break; 12861 case CTL_IO_TASK: 12862 if (bootverbose || verbose > 0) 12863 ctl_io_error_print(io, NULL); 12864 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12865 ctl_free_io(io); 12866 else 12867 fe_done(io); 12868 return (CTL_RETVAL_COMPLETE); 12869 break; 12870 default: 12871 printf("ctl_process_done: invalid io type %d\n", 12872 io->io_hdr.io_type); 12873 panic("ctl_process_done: invalid io type %d\n", 12874 io->io_hdr.io_type); 12875 break; /* NOTREACHED */ 12876 } 12877 12878 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12879 if (lun == NULL) { 12880 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12881 io->io_hdr.nexus.targ_mapped_lun)); 12882 fe_done(io); 12883 goto bailout; 12884 } 12885 ctl_softc = lun->ctl_softc; 12886 12887 mtx_lock(&lun->lun_lock); 12888 12889 /* 12890 * Check to see if we have any errors to inject here. We only 12891 * inject errors for commands that don't already have errors set. 12892 */ 12893 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12894 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12895 ctl_inject_error(lun, io); 12896 12897 /* 12898 * XXX KDM how do we treat commands that aren't completed 12899 * successfully? 12900 * 12901 * XXX KDM should we also track I/O latency? 12902 */ 12903 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 12904 uint32_t blocksize; 12905#ifdef CTL_TIME_IO 12906 struct bintime cur_bt; 12907#endif 12908 12909 if ((lun->be_lun != NULL) 12910 && (lun->be_lun->blocksize != 0)) 12911 blocksize = lun->be_lun->blocksize; 12912 else 12913 blocksize = 512; 12914 12915 switch (io->io_hdr.io_type) { 12916 case CTL_IO_SCSI: { 12917 int isread; 12918 struct ctl_lba_len_flags *lbalen; 12919 12920 isread = 0; 12921 switch (io->scsiio.cdb[0]) { 12922 case READ_6: 12923 case READ_10: 12924 case READ_12: 12925 case READ_16: 12926 isread = 1; 12927 /* FALLTHROUGH */ 12928 case WRITE_6: 12929 case WRITE_10: 12930 case WRITE_12: 12931 case WRITE_16: 12932 case WRITE_VERIFY_10: 12933 case WRITE_VERIFY_12: 12934 case WRITE_VERIFY_16: 12935 lbalen = (struct ctl_lba_len_flags *) 12936 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 12937 12938 if (isread) { 12939 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 12940 lbalen->len * blocksize; 12941 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 12942 12943#ifdef CTL_TIME_IO 12944 bintime_add( 12945 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 12946 &io->io_hdr.dma_bt); 12947 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 12948 io->io_hdr.num_dmas; 12949 getbintime(&cur_bt); 12950 bintime_sub(&cur_bt, 12951 &io->io_hdr.start_bt); 12952 12953 bintime_add( 12954 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 12955 &cur_bt); 12956 12957#if 0 12958 cs_prof_gettime(&cur_ticks); 12959 lun->stats.time[CTL_STATS_READ] += 12960 cur_ticks - 12961 io->io_hdr.start_ticks; 12962#endif 12963#if 0 12964 lun->stats.time[CTL_STATS_READ] += 12965 jiffies - io->io_hdr.start_time; 12966#endif 12967#endif /* CTL_TIME_IO */ 12968 } else { 12969 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 12970 lbalen->len * blocksize; 12971 lun->stats.ports[targ_port].operations[ 12972 CTL_STATS_WRITE]++; 12973 12974#ifdef CTL_TIME_IO 12975 bintime_add( 12976 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 12977 &io->io_hdr.dma_bt); 12978 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 12979 io->io_hdr.num_dmas; 12980 getbintime(&cur_bt); 12981 bintime_sub(&cur_bt, 12982 &io->io_hdr.start_bt); 12983 12984 bintime_add( 12985 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 12986 &cur_bt); 12987#if 0 12988 cs_prof_gettime(&cur_ticks); 12989 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12990 cur_ticks - 12991 io->io_hdr.start_ticks; 12992 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12993 jiffies - io->io_hdr.start_time; 12994#endif 12995#endif /* CTL_TIME_IO */ 12996 } 12997 break; 12998 default: 12999 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 13000 13001#ifdef CTL_TIME_IO 13002 bintime_add( 13003 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 13004 &io->io_hdr.dma_bt); 13005 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 13006 io->io_hdr.num_dmas; 13007 getbintime(&cur_bt); 13008 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 13009 13010 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 13011 &cur_bt); 13012 13013#if 0 13014 cs_prof_gettime(&cur_ticks); 13015 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 13016 cur_ticks - 13017 io->io_hdr.start_ticks; 13018 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 13019 jiffies - io->io_hdr.start_time; 13020#endif 13021#endif /* CTL_TIME_IO */ 13022 break; 13023 } 13024 break; 13025 } 13026 default: 13027 break; 13028 } 13029 } 13030 13031 /* 13032 * Remove this from the OOA queue. 13033 */ 13034 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 13035 13036 /* 13037 * Run through the blocked queue on this LUN and see if anything 13038 * has become unblocked, now that this transaction is done. 13039 */ 13040 ctl_check_blocked(lun); 13041 13042 /* 13043 * If the LUN has been invalidated, free it if there is nothing 13044 * left on its OOA queue. 13045 */ 13046 if ((lun->flags & CTL_LUN_INVALID) 13047 && TAILQ_EMPTY(&lun->ooa_queue)) { 13048 mtx_unlock(&lun->lun_lock); 13049 mtx_lock(&ctl_softc->ctl_lock); 13050 ctl_free_lun(lun); 13051 mtx_unlock(&ctl_softc->ctl_lock); 13052 } else 13053 mtx_unlock(&lun->lun_lock); 13054 13055 /* 13056 * If this command has been aborted, make sure we set the status 13057 * properly. The FETD is responsible for freeing the I/O and doing 13058 * whatever it needs to do to clean up its state. 13059 */ 13060 if (io->io_hdr.flags & CTL_FLAG_ABORT) 13061 io->io_hdr.status = CTL_CMD_ABORTED; 13062 13063 /* 13064 * We print out status for every task management command. For SCSI 13065 * commands, we filter out any unit attention errors; they happen 13066 * on every boot, and would clutter up the log. Note: task 13067 * management commands aren't printed here, they are printed above, 13068 * since they should never even make it down here. 13069 */ 13070 switch (io->io_hdr.io_type) { 13071 case CTL_IO_SCSI: { 13072 int error_code, sense_key, asc, ascq; 13073 13074 sense_key = 0; 13075 13076 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 13077 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 13078 /* 13079 * Since this is just for printing, no need to 13080 * show errors here. 13081 */ 13082 scsi_extract_sense_len(&io->scsiio.sense_data, 13083 io->scsiio.sense_len, 13084 &error_code, 13085 &sense_key, 13086 &asc, 13087 &ascq, 13088 /*show_errors*/ 0); 13089 } 13090 13091 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 13092 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 13093 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 13094 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 13095 13096 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 13097 ctl_softc->skipped_prints++; 13098 } else { 13099 uint32_t skipped_prints; 13100 13101 skipped_prints = ctl_softc->skipped_prints; 13102 13103 ctl_softc->skipped_prints = 0; 13104 ctl_softc->last_print_jiffies = time_uptime; 13105 13106 if (skipped_prints > 0) { 13107#ifdef NEEDTOPORT 13108 csevent_log(CSC_CTL | CSC_SHELF_SW | 13109 CTL_ERROR_REPORT, 13110 csevent_LogType_Trace, 13111 csevent_Severity_Information, 13112 csevent_AlertLevel_Green, 13113 csevent_FRU_Firmware, 13114 csevent_FRU_Unknown, 13115 "High CTL error volume, %d prints " 13116 "skipped", skipped_prints); 13117#endif 13118 } 13119 if (bootverbose || verbose > 0) 13120 ctl_io_error_print(io, NULL); 13121 } 13122 } 13123 break; 13124 } 13125 case CTL_IO_TASK: 13126 if (bootverbose || verbose > 0) 13127 ctl_io_error_print(io, NULL); 13128 break; 13129 default: 13130 break; 13131 } 13132 13133 /* 13134 * Tell the FETD or the other shelf controller we're done with this 13135 * command. Note that only SCSI commands get to this point. Task 13136 * management commands are completed above. 13137 * 13138 * We only send status to the other controller if we're in XFER 13139 * mode. In SER_ONLY mode, the I/O is done on the controller that 13140 * received the I/O (from CTL's perspective), and so the status is 13141 * generated there. 13142 * 13143 * XXX KDM if we hold the lock here, we could cause a deadlock 13144 * if the frontend comes back in in this context to queue 13145 * something. 13146 */ 13147 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 13148 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 13149 union ctl_ha_msg msg; 13150 13151 memset(&msg, 0, sizeof(msg)); 13152 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 13153 msg.hdr.original_sc = io->io_hdr.original_sc; 13154 msg.hdr.nexus = io->io_hdr.nexus; 13155 msg.hdr.status = io->io_hdr.status; 13156 msg.scsi.scsi_status = io->scsiio.scsi_status; 13157 msg.scsi.tag_num = io->scsiio.tag_num; 13158 msg.scsi.tag_type = io->scsiio.tag_type; 13159 msg.scsi.sense_len = io->scsiio.sense_len; 13160 msg.scsi.sense_residual = io->scsiio.sense_residual; 13161 msg.scsi.residual = io->scsiio.residual; 13162 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 13163 sizeof(io->scsiio.sense_data)); 13164 /* 13165 * We copy this whether or not this is an I/O-related 13166 * command. Otherwise, we'd have to go and check to see 13167 * whether it's a read/write command, and it really isn't 13168 * worth it. 13169 */ 13170 memcpy(&msg.scsi.lbalen, 13171 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 13172 sizeof(msg.scsi.lbalen)); 13173 13174 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 13175 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 13176 /* XXX do something here */ 13177 } 13178 13179 ctl_free_io(io); 13180 } else 13181 fe_done(io); 13182 13183bailout: 13184 13185 return (CTL_RETVAL_COMPLETE); 13186} 13187 13188/* 13189 * Front end should call this if it doesn't do autosense. When the request 13190 * sense comes back in from the initiator, we'll dequeue this and send it. 13191 */ 13192int 13193ctl_queue_sense(union ctl_io *io) 13194{ 13195 struct ctl_lun *lun; 13196 struct ctl_softc *ctl_softc; 13197 uint32_t initidx, targ_lun; 13198 13199 ctl_softc = control_softc; 13200 13201 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13202 13203 /* 13204 * LUN lookup will likely move to the ctl_work_thread() once we 13205 * have our new queueing infrastructure (that doesn't put things on 13206 * a per-LUN queue initially). That is so that we can handle 13207 * things like an INQUIRY to a LUN that we don't have enabled. We 13208 * can't deal with that right now. 13209 */ 13210 mtx_lock(&ctl_softc->ctl_lock); 13211 13212 /* 13213 * If we don't have a LUN for this, just toss the sense 13214 * information. 13215 */ 13216 targ_lun = io->io_hdr.nexus.targ_lun; 13217 if (io->io_hdr.nexus.lun_map_fn != NULL) 13218 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 13219 if ((targ_lun < CTL_MAX_LUNS) 13220 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13221 lun = ctl_softc->ctl_luns[targ_lun]; 13222 else 13223 goto bailout; 13224 13225 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13226 13227 mtx_lock(&lun->lun_lock); 13228 /* 13229 * Already have CA set for this LUN...toss the sense information. 13230 */ 13231 if (ctl_is_set(lun->have_ca, initidx)) { 13232 mtx_unlock(&lun->lun_lock); 13233 goto bailout; 13234 } 13235 13236 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13237 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13238 sizeof(io->scsiio.sense_data))); 13239 ctl_set_mask(lun->have_ca, initidx); 13240 mtx_unlock(&lun->lun_lock); 13241 13242bailout: 13243 mtx_unlock(&ctl_softc->ctl_lock); 13244 13245 ctl_free_io(io); 13246 13247 return (CTL_RETVAL_COMPLETE); 13248} 13249 13250/* 13251 * Primary command inlet from frontend ports. All SCSI and task I/O 13252 * requests must go through this function. 13253 */ 13254int 13255ctl_queue(union ctl_io *io) 13256{ 13257 struct ctl_softc *ctl_softc; 13258 13259 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13260 13261 ctl_softc = control_softc; 13262 13263#ifdef CTL_TIME_IO 13264 io->io_hdr.start_time = time_uptime; 13265 getbintime(&io->io_hdr.start_bt); 13266#endif /* CTL_TIME_IO */ 13267 13268 /* Map FE-specific LUN ID into global one. */ 13269 if (io->io_hdr.nexus.lun_map_fn != NULL) 13270 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.lun_map_fn( 13271 io->io_hdr.nexus.lun_map_arg, io->io_hdr.nexus.targ_lun); 13272 else 13273 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.targ_lun; 13274 13275 switch (io->io_hdr.io_type) { 13276 case CTL_IO_SCSI: 13277 ctl_enqueue_incoming(io); 13278 break; 13279 case CTL_IO_TASK: 13280 ctl_run_task(io); 13281 break; 13282 default: 13283 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13284 return (-EINVAL); 13285 } 13286 13287 return (CTL_RETVAL_COMPLETE); 13288} 13289 13290#ifdef CTL_IO_DELAY 13291static void 13292ctl_done_timer_wakeup(void *arg) 13293{ 13294 union ctl_io *io; 13295 13296 io = (union ctl_io *)arg; 13297 ctl_done(io); 13298} 13299#endif /* CTL_IO_DELAY */ 13300 13301void 13302ctl_done(union ctl_io *io) 13303{ 13304 struct ctl_softc *ctl_softc; 13305 13306 ctl_softc = control_softc; 13307 13308 /* 13309 * Enable this to catch duplicate completion issues. 13310 */ 13311#if 0 13312 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13313 printf("%s: type %d msg %d cdb %x iptl: " 13314 "%d:%d:%d:%d tag 0x%04x " 13315 "flag %#x status %x\n", 13316 __func__, 13317 io->io_hdr.io_type, 13318 io->io_hdr.msg_type, 13319 io->scsiio.cdb[0], 13320 io->io_hdr.nexus.initid.id, 13321 io->io_hdr.nexus.targ_port, 13322 io->io_hdr.nexus.targ_target.id, 13323 io->io_hdr.nexus.targ_lun, 13324 (io->io_hdr.io_type == 13325 CTL_IO_TASK) ? 13326 io->taskio.tag_num : 13327 io->scsiio.tag_num, 13328 io->io_hdr.flags, 13329 io->io_hdr.status); 13330 } else 13331 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13332#endif 13333 13334 /* 13335 * This is an internal copy of an I/O, and should not go through 13336 * the normal done processing logic. 13337 */ 13338 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) 13339 return; 13340 13341 /* 13342 * We need to send a msg to the serializing shelf to finish the IO 13343 * as well. We don't send a finish message to the other shelf if 13344 * this is a task management command. Task management commands 13345 * aren't serialized in the OOA queue, but rather just executed on 13346 * both shelf controllers for commands that originated on that 13347 * controller. 13348 */ 13349 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13350 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13351 union ctl_ha_msg msg_io; 13352 13353 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13354 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13355 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13356 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13357 } 13358 /* continue on to finish IO */ 13359 } 13360#ifdef CTL_IO_DELAY 13361 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13362 struct ctl_lun *lun; 13363 13364 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13365 13366 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13367 } else { 13368 struct ctl_lun *lun; 13369 13370 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13371 13372 if ((lun != NULL) 13373 && (lun->delay_info.done_delay > 0)) { 13374 struct callout *callout; 13375 13376 callout = (struct callout *)&io->io_hdr.timer_bytes; 13377 callout_init(callout, /*mpsafe*/ 1); 13378 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13379 callout_reset(callout, 13380 lun->delay_info.done_delay * hz, 13381 ctl_done_timer_wakeup, io); 13382 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13383 lun->delay_info.done_delay = 0; 13384 return; 13385 } 13386 } 13387#endif /* CTL_IO_DELAY */ 13388 13389 ctl_enqueue_done(io); 13390} 13391 13392int 13393ctl_isc(struct ctl_scsiio *ctsio) 13394{ 13395 struct ctl_lun *lun; 13396 int retval; 13397 13398 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13399 13400 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13401 13402 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13403 13404 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13405 13406 return (retval); 13407} 13408 13409 13410static void 13411ctl_work_thread(void *arg) 13412{ 13413 struct ctl_thread *thr = (struct ctl_thread *)arg; 13414 struct ctl_softc *softc = thr->ctl_softc; 13415 union ctl_io *io; 13416 int retval; 13417 13418 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13419 13420 for (;;) { 13421 retval = 0; 13422 13423 /* 13424 * We handle the queues in this order: 13425 * - ISC 13426 * - done queue (to free up resources, unblock other commands) 13427 * - RtR queue 13428 * - incoming queue 13429 * 13430 * If those queues are empty, we break out of the loop and 13431 * go to sleep. 13432 */ 13433 mtx_lock(&thr->queue_lock); 13434 io = (union ctl_io *)STAILQ_FIRST(&thr->isc_queue); 13435 if (io != NULL) { 13436 STAILQ_REMOVE_HEAD(&thr->isc_queue, links); 13437 mtx_unlock(&thr->queue_lock); 13438 ctl_handle_isc(io); 13439 continue; 13440 } 13441 io = (union ctl_io *)STAILQ_FIRST(&thr->done_queue); 13442 if (io != NULL) { 13443 STAILQ_REMOVE_HEAD(&thr->done_queue, links); 13444 /* clear any blocked commands, call fe_done */ 13445 mtx_unlock(&thr->queue_lock); 13446 retval = ctl_process_done(io); 13447 continue; 13448 } 13449 if (!ctl_pause_rtr) { 13450 io = (union ctl_io *)STAILQ_FIRST(&thr->rtr_queue); 13451 if (io != NULL) { 13452 STAILQ_REMOVE_HEAD(&thr->rtr_queue, links); 13453 mtx_unlock(&thr->queue_lock); 13454 retval = ctl_scsiio(&io->scsiio); 13455 if (retval != CTL_RETVAL_COMPLETE) 13456 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13457 continue; 13458 } 13459 } 13460 io = (union ctl_io *)STAILQ_FIRST(&thr->incoming_queue); 13461 if (io != NULL) { 13462 STAILQ_REMOVE_HEAD(&thr->incoming_queue, links); 13463 mtx_unlock(&thr->queue_lock); 13464 ctl_scsiio_precheck(softc, &io->scsiio); 13465 continue; 13466 } 13467 13468 /* Sleep until we have something to do. */ 13469 mtx_sleep(thr, &thr->queue_lock, PDROP | PRIBIO, "-", 0); 13470 } 13471} 13472 13473static void 13474ctl_lun_thread(void *arg) 13475{ 13476 struct ctl_softc *softc = (struct ctl_softc *)arg; 13477 struct ctl_be_lun *be_lun; 13478 int retval; 13479 13480 CTL_DEBUG_PRINT(("ctl_lun_thread starting\n")); 13481 13482 for (;;) { 13483 retval = 0; 13484 mtx_lock(&softc->ctl_lock); 13485 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13486 if (be_lun != NULL) { 13487 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13488 mtx_unlock(&softc->ctl_lock); 13489 ctl_create_lun(be_lun); 13490 continue; 13491 } 13492 13493 /* Sleep until we have something to do. */ 13494 mtx_sleep(&softc->pending_lun_queue, &softc->ctl_lock, 13495 PDROP | PRIBIO, "-", 0); 13496 } 13497} 13498 13499static void 13500ctl_enqueue_incoming(union ctl_io *io) 13501{ 13502 struct ctl_softc *softc = control_softc; 13503 struct ctl_thread *thr; 13504 13505 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13506 mtx_lock(&thr->queue_lock); 13507 STAILQ_INSERT_TAIL(&thr->incoming_queue, &io->io_hdr, links); 13508 mtx_unlock(&thr->queue_lock); 13509 wakeup(thr); 13510} 13511 13512static void 13513ctl_enqueue_rtr(union ctl_io *io) 13514{ 13515 struct ctl_softc *softc = control_softc; 13516 struct ctl_thread *thr; 13517 13518 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13519 mtx_lock(&thr->queue_lock); 13520 STAILQ_INSERT_TAIL(&thr->rtr_queue, &io->io_hdr, links); 13521 mtx_unlock(&thr->queue_lock); 13522 wakeup(thr); 13523} 13524 13525static void 13526ctl_enqueue_done(union ctl_io *io) 13527{ 13528 struct ctl_softc *softc = control_softc; 13529 struct ctl_thread *thr; 13530 13531 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13532 mtx_lock(&thr->queue_lock); 13533 STAILQ_INSERT_TAIL(&thr->done_queue, &io->io_hdr, links); 13534 mtx_unlock(&thr->queue_lock); 13535 wakeup(thr); 13536} 13537 13538static void 13539ctl_enqueue_isc(union ctl_io *io) 13540{ 13541 struct ctl_softc *softc = control_softc; 13542 struct ctl_thread *thr; 13543 13544 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13545 mtx_lock(&thr->queue_lock); 13546 STAILQ_INSERT_TAIL(&thr->isc_queue, &io->io_hdr, links); 13547 mtx_unlock(&thr->queue_lock); 13548 wakeup(thr); 13549} 13550 13551/* Initialization and failover */ 13552 13553void 13554ctl_init_isc_msg(void) 13555{ 13556 printf("CTL: Still calling this thing\n"); 13557} 13558 13559/* 13560 * Init component 13561 * Initializes component into configuration defined by bootMode 13562 * (see hasc-sv.c) 13563 * returns hasc_Status: 13564 * OK 13565 * ERROR - fatal error 13566 */ 13567static ctl_ha_comp_status 13568ctl_isc_init(struct ctl_ha_component *c) 13569{ 13570 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13571 13572 c->status = ret; 13573 return ret; 13574} 13575 13576/* Start component 13577 * Starts component in state requested. If component starts successfully, 13578 * it must set its own state to the requestrd state 13579 * When requested state is HASC_STATE_HA, the component may refine it 13580 * by adding _SLAVE or _MASTER flags. 13581 * Currently allowed state transitions are: 13582 * UNKNOWN->HA - initial startup 13583 * UNKNOWN->SINGLE - initial startup when no parter detected 13584 * HA->SINGLE - failover 13585 * returns ctl_ha_comp_status: 13586 * OK - component successfully started in requested state 13587 * FAILED - could not start the requested state, failover may 13588 * be possible 13589 * ERROR - fatal error detected, no future startup possible 13590 */ 13591static ctl_ha_comp_status 13592ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13593{ 13594 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13595 13596 printf("%s: go\n", __func__); 13597 13598 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13599 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13600 ctl_is_single = 0; 13601 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13602 != CTL_HA_STATUS_SUCCESS) { 13603 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13604 ret = CTL_HA_COMP_STATUS_ERROR; 13605 } 13606 } else if (CTL_HA_STATE_IS_HA(c->state) 13607 && CTL_HA_STATE_IS_SINGLE(state)){ 13608 // HA->SINGLE transition 13609 ctl_failover(); 13610 ctl_is_single = 1; 13611 } else { 13612 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13613 c->state, state); 13614 ret = CTL_HA_COMP_STATUS_ERROR; 13615 } 13616 if (CTL_HA_STATE_IS_SINGLE(state)) 13617 ctl_is_single = 1; 13618 13619 c->state = state; 13620 c->status = ret; 13621 return ret; 13622} 13623 13624/* 13625 * Quiesce component 13626 * The component must clear any error conditions (set status to OK) and 13627 * prepare itself to another Start call 13628 * returns ctl_ha_comp_status: 13629 * OK 13630 * ERROR 13631 */ 13632static ctl_ha_comp_status 13633ctl_isc_quiesce(struct ctl_ha_component *c) 13634{ 13635 int ret = CTL_HA_COMP_STATUS_OK; 13636 13637 ctl_pause_rtr = 1; 13638 c->status = ret; 13639 return ret; 13640} 13641 13642struct ctl_ha_component ctl_ha_component_ctlisc = 13643{ 13644 .name = "CTL ISC", 13645 .state = CTL_HA_STATE_UNKNOWN, 13646 .init = ctl_isc_init, 13647 .start = ctl_isc_start, 13648 .quiesce = ctl_isc_quiesce 13649}; 13650 13651/* 13652 * vim: ts=8 13653 */ 13654