ctl.c revision 267641
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 267641 2014-06-19 12:43:41Z mav $"); 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/types.h> 51#include <sys/kthread.h> 52#include <sys/bio.h> 53#include <sys/fcntl.h> 54#include <sys/lock.h> 55#include <sys/module.h> 56#include <sys/mutex.h> 57#include <sys/condvar.h> 58#include <sys/malloc.h> 59#include <sys/conf.h> 60#include <sys/ioccom.h> 61#include <sys/queue.h> 62#include <sys/sbuf.h> 63#include <sys/smp.h> 64#include <sys/endian.h> 65#include <sys/sysctl.h> 66 67#include <cam/cam.h> 68#include <cam/scsi/scsi_all.h> 69#include <cam/scsi/scsi_da.h> 70#include <cam/ctl/ctl_io.h> 71#include <cam/ctl/ctl.h> 72#include <cam/ctl/ctl_frontend.h> 73#include <cam/ctl/ctl_frontend_internal.h> 74#include <cam/ctl/ctl_util.h> 75#include <cam/ctl/ctl_backend.h> 76#include <cam/ctl/ctl_ioctl.h> 77#include <cam/ctl/ctl_ha.h> 78#include <cam/ctl/ctl_private.h> 79#include <cam/ctl/ctl_debug.h> 80#include <cam/ctl/ctl_scsi_all.h> 81#include <cam/ctl/ctl_error.h> 82 83struct ctl_softc *control_softc = NULL; 84 85/* 86 * The default is to run with CTL_DONE_THREAD turned on. Completed 87 * transactions are queued for processing by the CTL work thread. When 88 * CTL_DONE_THREAD is not defined, completed transactions are processed in 89 * the caller's context. 90 */ 91#define CTL_DONE_THREAD 92 93/* 94 * Size and alignment macros needed for Copan-specific HA hardware. These 95 * can go away when the HA code is re-written, and uses busdma for any 96 * hardware. 97 */ 98#define CTL_ALIGN_8B(target, source, type) \ 99 if (((uint32_t)source & 0x7) != 0) \ 100 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 101 else \ 102 target = (type)source; 103 104#define CTL_SIZE_8B(target, size) \ 105 if ((size & 0x7) != 0) \ 106 target = size + (0x8 - (size & 0x7)); \ 107 else \ 108 target = size; 109 110#define CTL_ALIGN_8B_MARGIN 16 111 112/* 113 * Template mode pages. 114 */ 115 116/* 117 * Note that these are default values only. The actual values will be 118 * filled in when the user does a mode sense. 119 */ 120static struct copan_power_subpage power_page_default = { 121 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 122 /*subpage*/ PWR_SUBPAGE_CODE, 123 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 124 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 125 /*page_version*/ PWR_VERSION, 126 /* total_luns */ 26, 127 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 128 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 129 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 130 0, 0, 0, 0, 0, 0} 131}; 132 133static struct copan_power_subpage power_page_changeable = { 134 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 135 /*subpage*/ PWR_SUBPAGE_CODE, 136 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 137 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 138 /*page_version*/ 0, 139 /* total_luns */ 0, 140 /* max_active_luns*/ 0, 141 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 142 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 143 0, 0, 0, 0, 0, 0} 144}; 145 146static struct copan_aps_subpage aps_page_default = { 147 APS_PAGE_CODE | SMPH_SPF, //page_code 148 APS_SUBPAGE_CODE, //subpage 149 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 150 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 151 APS_VERSION, //page_version 152 0, //lock_active 153 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 154 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 155 0, 0, 0, 0, 0} //reserved 156}; 157 158static struct copan_aps_subpage aps_page_changeable = { 159 APS_PAGE_CODE | SMPH_SPF, //page_code 160 APS_SUBPAGE_CODE, //subpage 161 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 162 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 163 0, //page_version 164 0, //lock_active 165 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 166 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 167 0, 0, 0, 0, 0} //reserved 168}; 169 170static struct copan_debugconf_subpage debugconf_page_default = { 171 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 172 DBGCNF_SUBPAGE_CODE, /* subpage */ 173 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 174 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 175 DBGCNF_VERSION, /* page_version */ 176 {CTL_TIME_IO_DEFAULT_SECS>>8, 177 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 178}; 179 180static struct copan_debugconf_subpage debugconf_page_changeable = { 181 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 182 DBGCNF_SUBPAGE_CODE, /* subpage */ 183 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 184 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 185 0, /* page_version */ 186 {0xff,0xff}, /* ctl_time_io_secs */ 187}; 188 189static struct scsi_format_page format_page_default = { 190 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 191 /*page_length*/sizeof(struct scsi_format_page) - 2, 192 /*tracks_per_zone*/ {0, 0}, 193 /*alt_sectors_per_zone*/ {0, 0}, 194 /*alt_tracks_per_zone*/ {0, 0}, 195 /*alt_tracks_per_lun*/ {0, 0}, 196 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 197 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 198 /*bytes_per_sector*/ {0, 0}, 199 /*interleave*/ {0, 0}, 200 /*track_skew*/ {0, 0}, 201 /*cylinder_skew*/ {0, 0}, 202 /*flags*/ SFP_HSEC, 203 /*reserved*/ {0, 0, 0} 204}; 205 206static struct scsi_format_page format_page_changeable = { 207 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 208 /*page_length*/sizeof(struct scsi_format_page) - 2, 209 /*tracks_per_zone*/ {0, 0}, 210 /*alt_sectors_per_zone*/ {0, 0}, 211 /*alt_tracks_per_zone*/ {0, 0}, 212 /*alt_tracks_per_lun*/ {0, 0}, 213 /*sectors_per_track*/ {0, 0}, 214 /*bytes_per_sector*/ {0, 0}, 215 /*interleave*/ {0, 0}, 216 /*track_skew*/ {0, 0}, 217 /*cylinder_skew*/ {0, 0}, 218 /*flags*/ 0, 219 /*reserved*/ {0, 0, 0} 220}; 221 222static struct scsi_rigid_disk_page rigid_disk_page_default = { 223 /*page_code*/SMS_RIGID_DISK_PAGE, 224 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 225 /*cylinders*/ {0, 0, 0}, 226 /*heads*/ CTL_DEFAULT_HEADS, 227 /*start_write_precomp*/ {0, 0, 0}, 228 /*start_reduced_current*/ {0, 0, 0}, 229 /*step_rate*/ {0, 0}, 230 /*landing_zone_cylinder*/ {0, 0, 0}, 231 /*rpl*/ SRDP_RPL_DISABLED, 232 /*rotational_offset*/ 0, 233 /*reserved1*/ 0, 234 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 235 CTL_DEFAULT_ROTATION_RATE & 0xff}, 236 /*reserved2*/ {0, 0} 237}; 238 239static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 240 /*page_code*/SMS_RIGID_DISK_PAGE, 241 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 242 /*cylinders*/ {0, 0, 0}, 243 /*heads*/ 0, 244 /*start_write_precomp*/ {0, 0, 0}, 245 /*start_reduced_current*/ {0, 0, 0}, 246 /*step_rate*/ {0, 0}, 247 /*landing_zone_cylinder*/ {0, 0, 0}, 248 /*rpl*/ 0, 249 /*rotational_offset*/ 0, 250 /*reserved1*/ 0, 251 /*rotation_rate*/ {0, 0}, 252 /*reserved2*/ {0, 0} 253}; 254 255static struct scsi_caching_page caching_page_default = { 256 /*page_code*/SMS_CACHING_PAGE, 257 /*page_length*/sizeof(struct scsi_caching_page) - 2, 258 /*flags1*/ SCP_DISC | SCP_WCE, 259 /*ret_priority*/ 0, 260 /*disable_pf_transfer_len*/ {0xff, 0xff}, 261 /*min_prefetch*/ {0, 0}, 262 /*max_prefetch*/ {0xff, 0xff}, 263 /*max_pf_ceiling*/ {0xff, 0xff}, 264 /*flags2*/ 0, 265 /*cache_segments*/ 0, 266 /*cache_seg_size*/ {0, 0}, 267 /*reserved*/ 0, 268 /*non_cache_seg_size*/ {0, 0, 0} 269}; 270 271static struct scsi_caching_page caching_page_changeable = { 272 /*page_code*/SMS_CACHING_PAGE, 273 /*page_length*/sizeof(struct scsi_caching_page) - 2, 274 /*flags1*/ 0, 275 /*ret_priority*/ 0, 276 /*disable_pf_transfer_len*/ {0, 0}, 277 /*min_prefetch*/ {0, 0}, 278 /*max_prefetch*/ {0, 0}, 279 /*max_pf_ceiling*/ {0, 0}, 280 /*flags2*/ 0, 281 /*cache_segments*/ 0, 282 /*cache_seg_size*/ {0, 0}, 283 /*reserved*/ 0, 284 /*non_cache_seg_size*/ {0, 0, 0} 285}; 286 287static struct scsi_control_page control_page_default = { 288 /*page_code*/SMS_CONTROL_MODE_PAGE, 289 /*page_length*/sizeof(struct scsi_control_page) - 2, 290 /*rlec*/0, 291 /*queue_flags*/0, 292 /*eca_and_aen*/0, 293 /*reserved*/0, 294 /*aen_holdoff_period*/{0, 0} 295}; 296 297static struct scsi_control_page control_page_changeable = { 298 /*page_code*/SMS_CONTROL_MODE_PAGE, 299 /*page_length*/sizeof(struct scsi_control_page) - 2, 300 /*rlec*/SCP_DSENSE, 301 /*queue_flags*/0, 302 /*eca_and_aen*/0, 303 /*reserved*/0, 304 /*aen_holdoff_period*/{0, 0} 305}; 306 307 308/* 309 * XXX KDM move these into the softc. 310 */ 311static int rcv_sync_msg; 312static int persis_offset; 313static uint8_t ctl_pause_rtr; 314static int ctl_is_single = 1; 315static int index_to_aps_page; 316 317SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 318static int worker_threads = 1; 319TUNABLE_INT("kern.cam.ctl.worker_threads", &worker_threads); 320SYSCTL_INT(_kern_cam_ctl, OID_AUTO, worker_threads, CTLFLAG_RDTUN, 321 &worker_threads, 1, "Number of worker threads"); 322static int verbose = 0; 323TUNABLE_INT("kern.cam.ctl.verbose", &verbose); 324SYSCTL_INT(_kern_cam_ctl, OID_AUTO, verbose, CTLFLAG_RWTUN, 325 &verbose, 0, "Show SCSI errors returned to initiator"); 326 327/* 328 * Serial number (0x80), device id (0x83), supported pages (0x00), 329 * Block limits (0xB0) and Logical Block Provisioning (0xB2) 330 */ 331#define SCSI_EVPD_NUM_SUPPORTED_PAGES 5 332 333static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 334 int param); 335static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 336static int ctl_init(void); 337void ctl_shutdown(void); 338static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 339static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 340static void ctl_ioctl_online(void *arg); 341static void ctl_ioctl_offline(void *arg); 342static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 343static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 344static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 345static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 346static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 347static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock); 348static int ctl_ioctl_submit_wait(union ctl_io *io); 349static void ctl_ioctl_datamove(union ctl_io *io); 350static void ctl_ioctl_done(union ctl_io *io); 351static void ctl_ioctl_hard_startstop_callback(void *arg, 352 struct cfi_metatask *metatask); 353static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 354static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 355 struct ctl_ooa *ooa_hdr, 356 struct ctl_ooa_entry *kern_entries); 357static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 358 struct thread *td); 359uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 360uint32_t ctl_port_idx(int port_num); 361#ifdef unused 362static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 363 uint32_t targ_target, uint32_t targ_lun, 364 int can_wait); 365static void ctl_kfree_io(union ctl_io *io); 366#endif /* unused */ 367static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 368 struct ctl_be_lun *be_lun, struct ctl_id target_id); 369static int ctl_free_lun(struct ctl_lun *lun); 370static void ctl_create_lun(struct ctl_be_lun *be_lun); 371/** 372static void ctl_failover_change_pages(struct ctl_softc *softc, 373 struct ctl_scsiio *ctsio, int master); 374**/ 375 376static int ctl_do_mode_select(union ctl_io *io); 377static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 378 uint64_t res_key, uint64_t sa_res_key, 379 uint8_t type, uint32_t residx, 380 struct ctl_scsiio *ctsio, 381 struct scsi_per_res_out *cdb, 382 struct scsi_per_res_out_parms* param); 383static void ctl_pro_preempt_other(struct ctl_lun *lun, 384 union ctl_ha_msg *msg); 385static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 386static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 387static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 388static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 389static int ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, 390 int alloc_len); 391static int ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len); 392static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 393static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 394static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 395static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 396static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 397 union ctl_io *ooa_io); 398static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 399 union ctl_io *starting_io); 400static int ctl_check_blocked(struct ctl_lun *lun); 401static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 402 struct ctl_lun *lun, 403 struct ctl_cmd_entry *entry, 404 struct ctl_scsiio *ctsio); 405//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 406static void ctl_failover(void); 407static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 408 struct ctl_scsiio *ctsio); 409static int ctl_scsiio(struct ctl_scsiio *ctsio); 410 411static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 412static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 413 ctl_ua_type ua_type); 414static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 415 ctl_ua_type ua_type); 416static int ctl_abort_task(union ctl_io *io); 417static void ctl_run_task_queue(struct ctl_softc *ctl_softc); 418#ifdef CTL_IO_DELAY 419static void ctl_datamove_timer_wakeup(void *arg); 420static void ctl_done_timer_wakeup(void *arg); 421#endif /* CTL_IO_DELAY */ 422 423static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 424static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 425static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 426static void ctl_datamove_remote_write(union ctl_io *io); 427static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 428static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 429static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 430static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 431 ctl_ha_dt_cb callback); 432static void ctl_datamove_remote_read(union ctl_io *io); 433static void ctl_datamove_remote(union ctl_io *io); 434static int ctl_process_done(union ctl_io *io, int have_lock); 435static void ctl_work_thread(void *arg); 436 437/* 438 * Load the serialization table. This isn't very pretty, but is probably 439 * the easiest way to do it. 440 */ 441#include "ctl_ser_table.c" 442 443/* 444 * We only need to define open, close and ioctl routines for this driver. 445 */ 446static struct cdevsw ctl_cdevsw = { 447 .d_version = D_VERSION, 448 .d_flags = 0, 449 .d_open = ctl_open, 450 .d_close = ctl_close, 451 .d_ioctl = ctl_ioctl, 452 .d_name = "ctl", 453}; 454 455 456MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 457 458static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 459 460static moduledata_t ctl_moduledata = { 461 "ctl", 462 ctl_module_event_handler, 463 NULL 464}; 465 466DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 467MODULE_VERSION(ctl, 1); 468 469static void 470ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 471 union ctl_ha_msg *msg_info) 472{ 473 struct ctl_scsiio *ctsio; 474 475 if (msg_info->hdr.original_sc == NULL) { 476 printf("%s: original_sc == NULL!\n", __func__); 477 /* XXX KDM now what? */ 478 return; 479 } 480 481 ctsio = &msg_info->hdr.original_sc->scsiio; 482 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 483 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 484 ctsio->io_hdr.status = msg_info->hdr.status; 485 ctsio->scsi_status = msg_info->scsi.scsi_status; 486 ctsio->sense_len = msg_info->scsi.sense_len; 487 ctsio->sense_residual = msg_info->scsi.sense_residual; 488 ctsio->residual = msg_info->scsi.residual; 489 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 490 sizeof(ctsio->sense_data)); 491 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 492 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 493 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 494 ctl_wakeup_thread(); 495} 496 497static void 498ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 499 union ctl_ha_msg *msg_info) 500{ 501 struct ctl_scsiio *ctsio; 502 503 if (msg_info->hdr.serializing_sc == NULL) { 504 printf("%s: serializing_sc == NULL!\n", __func__); 505 /* XXX KDM now what? */ 506 return; 507 } 508 509 ctsio = &msg_info->hdr.serializing_sc->scsiio; 510#if 0 511 /* 512 * Attempt to catch the situation where an I/O has 513 * been freed, and we're using it again. 514 */ 515 if (ctsio->io_hdr.io_type == 0xff) { 516 union ctl_io *tmp_io; 517 tmp_io = (union ctl_io *)ctsio; 518 printf("%s: %p use after free!\n", __func__, 519 ctsio); 520 printf("%s: type %d msg %d cdb %x iptl: " 521 "%d:%d:%d:%d tag 0x%04x " 522 "flag %#x status %x\n", 523 __func__, 524 tmp_io->io_hdr.io_type, 525 tmp_io->io_hdr.msg_type, 526 tmp_io->scsiio.cdb[0], 527 tmp_io->io_hdr.nexus.initid.id, 528 tmp_io->io_hdr.nexus.targ_port, 529 tmp_io->io_hdr.nexus.targ_target.id, 530 tmp_io->io_hdr.nexus.targ_lun, 531 (tmp_io->io_hdr.io_type == 532 CTL_IO_TASK) ? 533 tmp_io->taskio.tag_num : 534 tmp_io->scsiio.tag_num, 535 tmp_io->io_hdr.flags, 536 tmp_io->io_hdr.status); 537 } 538#endif 539 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 540 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, &ctsio->io_hdr, links); 541 ctl_wakeup_thread(); 542} 543 544/* 545 * ISC (Inter Shelf Communication) event handler. Events from the HA 546 * subsystem come in here. 547 */ 548static void 549ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 550{ 551 struct ctl_softc *ctl_softc; 552 union ctl_io *io; 553 struct ctl_prio *presio; 554 ctl_ha_status isc_status; 555 556 ctl_softc = control_softc; 557 io = NULL; 558 559 560#if 0 561 printf("CTL: Isc Msg event %d\n", event); 562#endif 563 if (event == CTL_HA_EVT_MSG_RECV) { 564 union ctl_ha_msg msg_info; 565 566 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 567 sizeof(msg_info), /*wait*/ 0); 568#if 0 569 printf("CTL: msg_type %d\n", msg_info.msg_type); 570#endif 571 if (isc_status != 0) { 572 printf("Error receiving message, status = %d\n", 573 isc_status); 574 return; 575 } 576 mtx_lock(&ctl_softc->ctl_lock); 577 578 switch (msg_info.hdr.msg_type) { 579 case CTL_MSG_SERIALIZE: 580#if 0 581 printf("Serialize\n"); 582#endif 583 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 584 if (io == NULL) { 585 printf("ctl_isc_event_handler: can't allocate " 586 "ctl_io!\n"); 587 /* Bad Juju */ 588 /* Need to set busy and send msg back */ 589 mtx_unlock(&ctl_softc->ctl_lock); 590 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 591 msg_info.hdr.status = CTL_SCSI_ERROR; 592 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 593 msg_info.scsi.sense_len = 0; 594 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 595 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 596 } 597 goto bailout; 598 } 599 ctl_zero_io(io); 600 // populate ctsio from msg_info 601 io->io_hdr.io_type = CTL_IO_SCSI; 602 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 603 io->io_hdr.original_sc = msg_info.hdr.original_sc; 604#if 0 605 printf("pOrig %x\n", (int)msg_info.original_sc); 606#endif 607 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 608 CTL_FLAG_IO_ACTIVE; 609 /* 610 * If we're in serialization-only mode, we don't 611 * want to go through full done processing. Thus 612 * the COPY flag. 613 * 614 * XXX KDM add another flag that is more specific. 615 */ 616 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 617 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 618 io->io_hdr.nexus = msg_info.hdr.nexus; 619#if 0 620 printf("targ %d, port %d, iid %d, lun %d\n", 621 io->io_hdr.nexus.targ_target.id, 622 io->io_hdr.nexus.targ_port, 623 io->io_hdr.nexus.initid.id, 624 io->io_hdr.nexus.targ_lun); 625#endif 626 io->scsiio.tag_num = msg_info.scsi.tag_num; 627 io->scsiio.tag_type = msg_info.scsi.tag_type; 628 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 629 CTL_MAX_CDBLEN); 630 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 631 struct ctl_cmd_entry *entry; 632 uint8_t opcode; 633 634 opcode = io->scsiio.cdb[0]; 635 entry = &ctl_cmd_table[opcode]; 636 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 637 io->io_hdr.flags |= 638 entry->flags & CTL_FLAG_DATA_MASK; 639 } 640 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 641 &io->io_hdr, links); 642 ctl_wakeup_thread(); 643 break; 644 645 /* Performed on the Originating SC, XFER mode only */ 646 case CTL_MSG_DATAMOVE: { 647 struct ctl_sg_entry *sgl; 648 int i, j; 649 650 io = msg_info.hdr.original_sc; 651 if (io == NULL) { 652 printf("%s: original_sc == NULL!\n", __func__); 653 /* XXX KDM do something here */ 654 break; 655 } 656 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 657 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 658 /* 659 * Keep track of this, we need to send it back over 660 * when the datamove is complete. 661 */ 662 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 663 664 if (msg_info.dt.sg_sequence == 0) { 665 /* 666 * XXX KDM we use the preallocated S/G list 667 * here, but we'll need to change this to 668 * dynamic allocation if we need larger S/G 669 * lists. 670 */ 671 if (msg_info.dt.kern_sg_entries > 672 sizeof(io->io_hdr.remote_sglist) / 673 sizeof(io->io_hdr.remote_sglist[0])) { 674 printf("%s: number of S/G entries " 675 "needed %u > allocated num %zd\n", 676 __func__, 677 msg_info.dt.kern_sg_entries, 678 sizeof(io->io_hdr.remote_sglist)/ 679 sizeof(io->io_hdr.remote_sglist[0])); 680 681 /* 682 * XXX KDM send a message back to 683 * the other side to shut down the 684 * DMA. The error will come back 685 * through via the normal channel. 686 */ 687 break; 688 } 689 sgl = io->io_hdr.remote_sglist; 690 memset(sgl, 0, 691 sizeof(io->io_hdr.remote_sglist)); 692 693 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 694 695 io->scsiio.kern_sg_entries = 696 msg_info.dt.kern_sg_entries; 697 io->scsiio.rem_sg_entries = 698 msg_info.dt.kern_sg_entries; 699 io->scsiio.kern_data_len = 700 msg_info.dt.kern_data_len; 701 io->scsiio.kern_total_len = 702 msg_info.dt.kern_total_len; 703 io->scsiio.kern_data_resid = 704 msg_info.dt.kern_data_resid; 705 io->scsiio.kern_rel_offset = 706 msg_info.dt.kern_rel_offset; 707 /* 708 * Clear out per-DMA flags. 709 */ 710 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 711 /* 712 * Add per-DMA flags that are set for this 713 * particular DMA request. 714 */ 715 io->io_hdr.flags |= msg_info.dt.flags & 716 CTL_FLAG_RDMA_MASK; 717 } else 718 sgl = (struct ctl_sg_entry *) 719 io->scsiio.kern_data_ptr; 720 721 for (i = msg_info.dt.sent_sg_entries, j = 0; 722 i < (msg_info.dt.sent_sg_entries + 723 msg_info.dt.cur_sg_entries); i++, j++) { 724 sgl[i].addr = msg_info.dt.sg_list[j].addr; 725 sgl[i].len = msg_info.dt.sg_list[j].len; 726 727#if 0 728 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 729 __func__, 730 msg_info.dt.sg_list[j].addr, 731 msg_info.dt.sg_list[j].len, 732 sgl[i].addr, sgl[i].len, j, i); 733#endif 734 } 735#if 0 736 memcpy(&sgl[msg_info.dt.sent_sg_entries], 737 msg_info.dt.sg_list, 738 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 739#endif 740 741 /* 742 * If this is the last piece of the I/O, we've got 743 * the full S/G list. Queue processing in the thread. 744 * Otherwise wait for the next piece. 745 */ 746 if (msg_info.dt.sg_last != 0) { 747 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 748 &io->io_hdr, links); 749 ctl_wakeup_thread(); 750 } 751 break; 752 } 753 /* Performed on the Serializing (primary) SC, XFER mode only */ 754 case CTL_MSG_DATAMOVE_DONE: { 755 if (msg_info.hdr.serializing_sc == NULL) { 756 printf("%s: serializing_sc == NULL!\n", 757 __func__); 758 /* XXX KDM now what? */ 759 break; 760 } 761 /* 762 * We grab the sense information here in case 763 * there was a failure, so we can return status 764 * back to the initiator. 765 */ 766 io = msg_info.hdr.serializing_sc; 767 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 768 io->io_hdr.status = msg_info.hdr.status; 769 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 770 io->scsiio.sense_len = msg_info.scsi.sense_len; 771 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 772 io->io_hdr.port_status = msg_info.scsi.fetd_status; 773 io->scsiio.residual = msg_info.scsi.residual; 774 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 775 sizeof(io->scsiio.sense_data)); 776 777 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 778 &io->io_hdr, links); 779 ctl_wakeup_thread(); 780 break; 781 } 782 783 /* Preformed on Originating SC, SER_ONLY mode */ 784 case CTL_MSG_R2R: 785 io = msg_info.hdr.original_sc; 786 if (io == NULL) { 787 printf("%s: Major Bummer\n", __func__); 788 mtx_unlock(&ctl_softc->ctl_lock); 789 return; 790 } else { 791#if 0 792 printf("pOrig %x\n",(int) ctsio); 793#endif 794 } 795 io->io_hdr.msg_type = CTL_MSG_R2R; 796 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 797 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 798 &io->io_hdr, links); 799 ctl_wakeup_thread(); 800 break; 801 802 /* 803 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 804 * mode. 805 * Performed on the Originating (i.e. secondary) SC in XFER 806 * mode 807 */ 808 case CTL_MSG_FINISH_IO: 809 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 810 ctl_isc_handler_finish_xfer(ctl_softc, 811 &msg_info); 812 else 813 ctl_isc_handler_finish_ser_only(ctl_softc, 814 &msg_info); 815 break; 816 817 /* Preformed on Originating SC */ 818 case CTL_MSG_BAD_JUJU: 819 io = msg_info.hdr.original_sc; 820 if (io == NULL) { 821 printf("%s: Bad JUJU!, original_sc is NULL!\n", 822 __func__); 823 break; 824 } 825 ctl_copy_sense_data(&msg_info, io); 826 /* 827 * IO should have already been cleaned up on other 828 * SC so clear this flag so we won't send a message 829 * back to finish the IO there. 830 */ 831 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 832 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 833 834 /* io = msg_info.hdr.serializing_sc; */ 835 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 836 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 837 &io->io_hdr, links); 838 ctl_wakeup_thread(); 839 break; 840 841 /* Handle resets sent from the other side */ 842 case CTL_MSG_MANAGE_TASKS: { 843 struct ctl_taskio *taskio; 844 taskio = (struct ctl_taskio *)ctl_alloc_io( 845 (void *)ctl_softc->othersc_pool); 846 if (taskio == NULL) { 847 printf("ctl_isc_event_handler: can't allocate " 848 "ctl_io!\n"); 849 /* Bad Juju */ 850 /* should I just call the proper reset func 851 here??? */ 852 mtx_unlock(&ctl_softc->ctl_lock); 853 goto bailout; 854 } 855 ctl_zero_io((union ctl_io *)taskio); 856 taskio->io_hdr.io_type = CTL_IO_TASK; 857 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 858 taskio->io_hdr.nexus = msg_info.hdr.nexus; 859 taskio->task_action = msg_info.task.task_action; 860 taskio->tag_num = msg_info.task.tag_num; 861 taskio->tag_type = msg_info.task.tag_type; 862#ifdef CTL_TIME_IO 863 taskio->io_hdr.start_time = time_uptime; 864 getbintime(&taskio->io_hdr.start_bt); 865#if 0 866 cs_prof_gettime(&taskio->io_hdr.start_ticks); 867#endif 868#endif /* CTL_TIME_IO */ 869 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, 870 &taskio->io_hdr, links); 871 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 872 ctl_wakeup_thread(); 873 break; 874 } 875 /* Persistent Reserve action which needs attention */ 876 case CTL_MSG_PERS_ACTION: 877 presio = (struct ctl_prio *)ctl_alloc_io( 878 (void *)ctl_softc->othersc_pool); 879 if (presio == NULL) { 880 printf("ctl_isc_event_handler: can't allocate " 881 "ctl_io!\n"); 882 /* Bad Juju */ 883 /* Need to set busy and send msg back */ 884 mtx_unlock(&ctl_softc->ctl_lock); 885 goto bailout; 886 } 887 ctl_zero_io((union ctl_io *)presio); 888 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 889 presio->pr_msg = msg_info.pr; 890 STAILQ_INSERT_TAIL(&ctl_softc->isc_queue, 891 &presio->io_hdr, links); 892 ctl_wakeup_thread(); 893 break; 894 case CTL_MSG_SYNC_FE: 895 rcv_sync_msg = 1; 896 break; 897 case CTL_MSG_APS_LOCK: { 898 // It's quicker to execute this then to 899 // queue it. 900 struct ctl_lun *lun; 901 struct ctl_page_index *page_index; 902 struct copan_aps_subpage *current_sp; 903 uint32_t targ_lun; 904 905 targ_lun = msg_info.hdr.nexus.targ_lun; 906 if (msg_info.hdr.nexus.lun_map_fn != NULL) 907 targ_lun = msg_info.hdr.nexus.lun_map_fn(msg_info.hdr.nexus.lun_map_arg, targ_lun); 908 909 lun = ctl_softc->ctl_luns[targ_lun]; 910 page_index = &lun->mode_pages.index[index_to_aps_page]; 911 current_sp = (struct copan_aps_subpage *) 912 (page_index->page_data + 913 (page_index->page_len * CTL_PAGE_CURRENT)); 914 915 current_sp->lock_active = msg_info.aps.lock_flag; 916 break; 917 } 918 default: 919 printf("How did I get here?\n"); 920 } 921 mtx_unlock(&ctl_softc->ctl_lock); 922 } else if (event == CTL_HA_EVT_MSG_SENT) { 923 if (param != CTL_HA_STATUS_SUCCESS) { 924 printf("Bad status from ctl_ha_msg_send status %d\n", 925 param); 926 } 927 return; 928 } else if (event == CTL_HA_EVT_DISCONNECT) { 929 printf("CTL: Got a disconnect from Isc\n"); 930 return; 931 } else { 932 printf("ctl_isc_event_handler: Unknown event %d\n", event); 933 return; 934 } 935 936bailout: 937 return; 938} 939 940static void 941ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 942{ 943 struct scsi_sense_data *sense; 944 945 sense = &dest->scsiio.sense_data; 946 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 947 dest->scsiio.scsi_status = src->scsi.scsi_status; 948 dest->scsiio.sense_len = src->scsi.sense_len; 949 dest->io_hdr.status = src->hdr.status; 950} 951 952static int 953ctl_init(void) 954{ 955 struct ctl_softc *softc; 956 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 957 struct ctl_frontend *fe; 958 uint8_t sc_id =0; 959 int i, error, retval; 960 //int isc_retval; 961 962 retval = 0; 963 ctl_pause_rtr = 0; 964 rcv_sync_msg = 0; 965 966 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 967 M_WAITOK | M_ZERO); 968 softc = control_softc; 969 970 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 971 "cam/ctl"); 972 973 softc->dev->si_drv1 = softc; 974 975 /* 976 * By default, return a "bad LUN" peripheral qualifier for unknown 977 * LUNs. The user can override this default using the tunable or 978 * sysctl. See the comment in ctl_inquiry_std() for more details. 979 */ 980 softc->inquiry_pq_no_lun = 1; 981 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 982 &softc->inquiry_pq_no_lun); 983 sysctl_ctx_init(&softc->sysctl_ctx); 984 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 985 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 986 CTLFLAG_RD, 0, "CAM Target Layer"); 987 988 if (softc->sysctl_tree == NULL) { 989 printf("%s: unable to allocate sysctl tree\n", __func__); 990 destroy_dev(softc->dev); 991 free(control_softc, M_DEVBUF); 992 control_softc = NULL; 993 return (ENOMEM); 994 } 995 996 SYSCTL_ADD_INT(&softc->sysctl_ctx, 997 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 998 "inquiry_pq_no_lun", CTLFLAG_RW, 999 &softc->inquiry_pq_no_lun, 0, 1000 "Report no lun possible for invalid LUNs"); 1001 1002 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 1003 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 1004 softc->open_count = 0; 1005 1006 /* 1007 * Default to actually sending a SYNCHRONIZE CACHE command down to 1008 * the drive. 1009 */ 1010 softc->flags = CTL_FLAG_REAL_SYNC; 1011 1012 /* 1013 * In Copan's HA scheme, the "master" and "slave" roles are 1014 * figured out through the slot the controller is in. Although it 1015 * is an active/active system, someone has to be in charge. 1016 */ 1017#ifdef NEEDTOPORT 1018 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 1019#endif 1020 1021 if (sc_id == 0) { 1022 softc->flags |= CTL_FLAG_MASTER_SHELF; 1023 persis_offset = 0; 1024 } else 1025 persis_offset = CTL_MAX_INITIATORS; 1026 1027 /* 1028 * XXX KDM need to figure out where we want to get our target ID 1029 * and WWID. Is it different on each port? 1030 */ 1031 softc->target.id = 0; 1032 softc->target.wwid[0] = 0x12345678; 1033 softc->target.wwid[1] = 0x87654321; 1034 STAILQ_INIT(&softc->lun_list); 1035 STAILQ_INIT(&softc->pending_lun_queue); 1036 STAILQ_INIT(&softc->task_queue); 1037 STAILQ_INIT(&softc->incoming_queue); 1038 STAILQ_INIT(&softc->rtr_queue); 1039 STAILQ_INIT(&softc->done_queue); 1040 STAILQ_INIT(&softc->isc_queue); 1041 STAILQ_INIT(&softc->fe_list); 1042 STAILQ_INIT(&softc->be_list); 1043 STAILQ_INIT(&softc->io_pools); 1044 1045 /* 1046 * We don't bother calling these with ctl_lock held here, because, 1047 * in theory, no one else can try to do anything while we're in our 1048 * module init routine. 1049 */ 1050 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1051 &internal_pool)!= 0){ 1052 printf("ctl: can't allocate %d entry internal pool, " 1053 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1054 return (ENOMEM); 1055 } 1056 1057 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1058 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1059 printf("ctl: can't allocate %d entry emergency pool, " 1060 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1061 ctl_pool_free(internal_pool); 1062 return (ENOMEM); 1063 } 1064 1065 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1066 &other_pool) != 0) 1067 { 1068 printf("ctl: can't allocate %d entry other SC pool, " 1069 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1070 ctl_pool_free(internal_pool); 1071 ctl_pool_free(emergency_pool); 1072 return (ENOMEM); 1073 } 1074 1075 softc->internal_pool = internal_pool; 1076 softc->emergency_pool = emergency_pool; 1077 softc->othersc_pool = other_pool; 1078 1079 if (worker_threads > MAXCPU || worker_threads == 0) { 1080 printf("invalid kern.cam.ctl.worker_threads value; " 1081 "setting to 1"); 1082 worker_threads = 1; 1083 } else if (worker_threads < 0) { 1084 if (mp_ncpus > 2) { 1085 /* 1086 * Using more than two worker threads actually hurts 1087 * performance due to lock contention. 1088 */ 1089 worker_threads = 2; 1090 } else { 1091 worker_threads = 1; 1092 } 1093 } 1094 1095 for (i = 0; i < worker_threads; i++) { 1096 error = kproc_kthread_add(ctl_work_thread, softc, 1097 &softc->work_thread, NULL, 0, 0, "ctl", "work%d", i); 1098 if (error != 0) { 1099 printf("error creating CTL work thread!\n"); 1100 ctl_pool_free(internal_pool); 1101 ctl_pool_free(emergency_pool); 1102 ctl_pool_free(other_pool); 1103 return (error); 1104 } 1105 } 1106 if (bootverbose) 1107 printf("ctl: CAM Target Layer loaded\n"); 1108 1109 /* 1110 * Initialize the initiator and portname mappings 1111 */ 1112 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1113 1114 /* 1115 * Initialize the ioctl front end. 1116 */ 1117 fe = &softc->ioctl_info.fe; 1118 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1119 fe->port_type = CTL_PORT_IOCTL; 1120 fe->num_requested_ctl_io = 100; 1121 fe->port_name = softc->ioctl_info.port_name; 1122 fe->port_online = ctl_ioctl_online; 1123 fe->port_offline = ctl_ioctl_offline; 1124 fe->onoff_arg = &softc->ioctl_info; 1125 fe->targ_enable = ctl_ioctl_targ_enable; 1126 fe->targ_disable = ctl_ioctl_targ_disable; 1127 fe->lun_enable = ctl_ioctl_lun_enable; 1128 fe->lun_disable = ctl_ioctl_lun_disable; 1129 fe->targ_lun_arg = &softc->ioctl_info; 1130 fe->fe_datamove = ctl_ioctl_datamove; 1131 fe->fe_done = ctl_ioctl_done; 1132 fe->max_targets = 15; 1133 fe->max_target_id = 15; 1134 1135 if (ctl_frontend_register(&softc->ioctl_info.fe, 1136 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1137 printf("ctl: ioctl front end registration failed, will " 1138 "continue anyway\n"); 1139 } 1140 1141#ifdef CTL_IO_DELAY 1142 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1143 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1144 sizeof(struct callout), CTL_TIMER_BYTES); 1145 return (EINVAL); 1146 } 1147#endif /* CTL_IO_DELAY */ 1148 1149 return (0); 1150} 1151 1152void 1153ctl_shutdown(void) 1154{ 1155 struct ctl_softc *softc; 1156 struct ctl_lun *lun, *next_lun; 1157 struct ctl_io_pool *pool; 1158 1159 softc = (struct ctl_softc *)control_softc; 1160 1161 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1162 printf("ctl: ioctl front end deregistration failed\n"); 1163 1164 mtx_lock(&softc->ctl_lock); 1165 1166 /* 1167 * Free up each LUN. 1168 */ 1169 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1170 next_lun = STAILQ_NEXT(lun, links); 1171 ctl_free_lun(lun); 1172 } 1173 1174 mtx_unlock(&softc->ctl_lock); 1175 1176 /* 1177 * This will rip the rug out from under any FETDs or anyone else 1178 * that has a pool allocated. Since we increment our module 1179 * refcount any time someone outside the main CTL module allocates 1180 * a pool, we shouldn't have any problems here. The user won't be 1181 * able to unload the CTL module until client modules have 1182 * successfully unloaded. 1183 */ 1184 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1185 ctl_pool_free(pool); 1186 1187#if 0 1188 ctl_shutdown_thread(softc->work_thread); 1189#endif 1190 1191 mtx_destroy(&softc->pool_lock); 1192 mtx_destroy(&softc->ctl_lock); 1193 1194 destroy_dev(softc->dev); 1195 1196 sysctl_ctx_free(&softc->sysctl_ctx); 1197 1198 free(control_softc, M_DEVBUF); 1199 control_softc = NULL; 1200 1201 if (bootverbose) 1202 printf("ctl: CAM Target Layer unloaded\n"); 1203} 1204 1205static int 1206ctl_module_event_handler(module_t mod, int what, void *arg) 1207{ 1208 1209 switch (what) { 1210 case MOD_LOAD: 1211 return (ctl_init()); 1212 case MOD_UNLOAD: 1213 return (EBUSY); 1214 default: 1215 return (EOPNOTSUPP); 1216 } 1217} 1218 1219/* 1220 * XXX KDM should we do some access checks here? Bump a reference count to 1221 * prevent a CTL module from being unloaded while someone has it open? 1222 */ 1223static int 1224ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1225{ 1226 return (0); 1227} 1228 1229static int 1230ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1231{ 1232 return (0); 1233} 1234 1235int 1236ctl_port_enable(ctl_port_type port_type) 1237{ 1238 struct ctl_softc *softc; 1239 struct ctl_frontend *fe; 1240 1241 if (ctl_is_single == 0) { 1242 union ctl_ha_msg msg_info; 1243 int isc_retval; 1244 1245#if 0 1246 printf("%s: HA mode, synchronizing frontend enable\n", 1247 __func__); 1248#endif 1249 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1250 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1251 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1252 printf("Sync msg send error retval %d\n", isc_retval); 1253 } 1254 if (!rcv_sync_msg) { 1255 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1256 sizeof(msg_info), 1); 1257 } 1258#if 0 1259 printf("CTL:Frontend Enable\n"); 1260 } else { 1261 printf("%s: single mode, skipping frontend synchronization\n", 1262 __func__); 1263#endif 1264 } 1265 1266 softc = control_softc; 1267 1268 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1269 if (port_type & fe->port_type) 1270 { 1271#if 0 1272 printf("port %d\n", fe->targ_port); 1273#endif 1274 ctl_frontend_online(fe); 1275 } 1276 } 1277 1278 return (0); 1279} 1280 1281int 1282ctl_port_disable(ctl_port_type port_type) 1283{ 1284 struct ctl_softc *softc; 1285 struct ctl_frontend *fe; 1286 1287 softc = control_softc; 1288 1289 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1290 if (port_type & fe->port_type) 1291 ctl_frontend_offline(fe); 1292 } 1293 1294 return (0); 1295} 1296 1297/* 1298 * Returns 0 for success, 1 for failure. 1299 * Currently the only failure mode is if there aren't enough entries 1300 * allocated. So, in case of a failure, look at num_entries_dropped, 1301 * reallocate and try again. 1302 */ 1303int 1304ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1305 int *num_entries_filled, int *num_entries_dropped, 1306 ctl_port_type port_type, int no_virtual) 1307{ 1308 struct ctl_softc *softc; 1309 struct ctl_frontend *fe; 1310 int entries_dropped, entries_filled; 1311 int retval; 1312 int i; 1313 1314 softc = control_softc; 1315 1316 retval = 0; 1317 entries_filled = 0; 1318 entries_dropped = 0; 1319 1320 i = 0; 1321 mtx_lock(&softc->ctl_lock); 1322 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1323 struct ctl_port_entry *entry; 1324 1325 if ((fe->port_type & port_type) == 0) 1326 continue; 1327 1328 if ((no_virtual != 0) 1329 && (fe->virtual_port != 0)) 1330 continue; 1331 1332 if (entries_filled >= num_entries_alloced) { 1333 entries_dropped++; 1334 continue; 1335 } 1336 entry = &entries[i]; 1337 1338 entry->port_type = fe->port_type; 1339 strlcpy(entry->port_name, fe->port_name, 1340 sizeof(entry->port_name)); 1341 entry->physical_port = fe->physical_port; 1342 entry->virtual_port = fe->virtual_port; 1343 entry->wwnn = fe->wwnn; 1344 entry->wwpn = fe->wwpn; 1345 1346 i++; 1347 entries_filled++; 1348 } 1349 1350 mtx_unlock(&softc->ctl_lock); 1351 1352 if (entries_dropped > 0) 1353 retval = 1; 1354 1355 *num_entries_dropped = entries_dropped; 1356 *num_entries_filled = entries_filled; 1357 1358 return (retval); 1359} 1360 1361static void 1362ctl_ioctl_online(void *arg) 1363{ 1364 struct ctl_ioctl_info *ioctl_info; 1365 1366 ioctl_info = (struct ctl_ioctl_info *)arg; 1367 1368 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1369} 1370 1371static void 1372ctl_ioctl_offline(void *arg) 1373{ 1374 struct ctl_ioctl_info *ioctl_info; 1375 1376 ioctl_info = (struct ctl_ioctl_info *)arg; 1377 1378 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1379} 1380 1381/* 1382 * Remove an initiator by port number and initiator ID. 1383 * Returns 0 for success, 1 for failure. 1384 */ 1385int 1386ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1387{ 1388 struct ctl_softc *softc; 1389 1390 softc = control_softc; 1391 1392 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1393 1394 if ((targ_port < 0) 1395 || (targ_port > CTL_MAX_PORTS)) { 1396 printf("%s: invalid port number %d\n", __func__, targ_port); 1397 return (1); 1398 } 1399 if (iid > CTL_MAX_INIT_PER_PORT) { 1400 printf("%s: initiator ID %u > maximun %u!\n", 1401 __func__, iid, CTL_MAX_INIT_PER_PORT); 1402 return (1); 1403 } 1404 1405 mtx_lock(&softc->ctl_lock); 1406 1407 softc->wwpn_iid[targ_port][iid].in_use = 0; 1408 1409 mtx_unlock(&softc->ctl_lock); 1410 1411 return (0); 1412} 1413 1414/* 1415 * Add an initiator to the initiator map. 1416 * Returns 0 for success, 1 for failure. 1417 */ 1418int 1419ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1420{ 1421 struct ctl_softc *softc; 1422 int retval; 1423 1424 softc = control_softc; 1425 1426 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1427 1428 retval = 0; 1429 1430 if ((targ_port < 0) 1431 || (targ_port > CTL_MAX_PORTS)) { 1432 printf("%s: invalid port number %d\n", __func__, targ_port); 1433 return (1); 1434 } 1435 if (iid > CTL_MAX_INIT_PER_PORT) { 1436 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1437 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1438 return (1); 1439 } 1440 1441 mtx_lock(&softc->ctl_lock); 1442 1443 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1444 /* 1445 * We don't treat this as an error. 1446 */ 1447 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1448 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1449 __func__, targ_port, iid, (uintmax_t)wwpn); 1450 goto bailout; 1451 } 1452 1453 /* 1454 * This is an error, but what do we do about it? The 1455 * driver is telling us we have a new WWPN for this 1456 * initiator ID, so we pretty much need to use it. 1457 */ 1458 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1459 "still at that address\n", __func__, targ_port, iid, 1460 (uintmax_t)wwpn, 1461 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1462 1463 /* 1464 * XXX KDM clear have_ca and ua_pending on each LUN for 1465 * this initiator. 1466 */ 1467 } 1468 softc->wwpn_iid[targ_port][iid].in_use = 1; 1469 softc->wwpn_iid[targ_port][iid].iid = iid; 1470 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1471 softc->wwpn_iid[targ_port][iid].port = targ_port; 1472 1473bailout: 1474 1475 mtx_unlock(&softc->ctl_lock); 1476 1477 return (retval); 1478} 1479 1480/* 1481 * XXX KDM should we pretend to do something in the target/lun 1482 * enable/disable functions? 1483 */ 1484static int 1485ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1486{ 1487 return (0); 1488} 1489 1490static int 1491ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1492{ 1493 return (0); 1494} 1495 1496static int 1497ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1498{ 1499 return (0); 1500} 1501 1502static int 1503ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1504{ 1505 return (0); 1506} 1507 1508/* 1509 * Data movement routine for the CTL ioctl frontend port. 1510 */ 1511static int 1512ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1513{ 1514 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1515 struct ctl_sg_entry ext_entry, kern_entry; 1516 int ext_sglen, ext_sg_entries, kern_sg_entries; 1517 int ext_sg_start, ext_offset; 1518 int len_to_copy, len_copied; 1519 int kern_watermark, ext_watermark; 1520 int ext_sglist_malloced; 1521 int i, j; 1522 1523 ext_sglist_malloced = 0; 1524 ext_sg_start = 0; 1525 ext_offset = 0; 1526 1527 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1528 1529 /* 1530 * If this flag is set, fake the data transfer. 1531 */ 1532 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1533 ctsio->ext_data_filled = ctsio->ext_data_len; 1534 goto bailout; 1535 } 1536 1537 /* 1538 * To simplify things here, if we have a single buffer, stick it in 1539 * a S/G entry and just make it a single entry S/G list. 1540 */ 1541 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1542 int len_seen; 1543 1544 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1545 1546 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1547 M_WAITOK); 1548 ext_sglist_malloced = 1; 1549 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1550 ext_sglen) != 0) { 1551 ctl_set_internal_failure(ctsio, 1552 /*sks_valid*/ 0, 1553 /*retry_count*/ 0); 1554 goto bailout; 1555 } 1556 ext_sg_entries = ctsio->ext_sg_entries; 1557 len_seen = 0; 1558 for (i = 0; i < ext_sg_entries; i++) { 1559 if ((len_seen + ext_sglist[i].len) >= 1560 ctsio->ext_data_filled) { 1561 ext_sg_start = i; 1562 ext_offset = ctsio->ext_data_filled - len_seen; 1563 break; 1564 } 1565 len_seen += ext_sglist[i].len; 1566 } 1567 } else { 1568 ext_sglist = &ext_entry; 1569 ext_sglist->addr = ctsio->ext_data_ptr; 1570 ext_sglist->len = ctsio->ext_data_len; 1571 ext_sg_entries = 1; 1572 ext_sg_start = 0; 1573 ext_offset = ctsio->ext_data_filled; 1574 } 1575 1576 if (ctsio->kern_sg_entries > 0) { 1577 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1578 kern_sg_entries = ctsio->kern_sg_entries; 1579 } else { 1580 kern_sglist = &kern_entry; 1581 kern_sglist->addr = ctsio->kern_data_ptr; 1582 kern_sglist->len = ctsio->kern_data_len; 1583 kern_sg_entries = 1; 1584 } 1585 1586 1587 kern_watermark = 0; 1588 ext_watermark = ext_offset; 1589 len_copied = 0; 1590 for (i = ext_sg_start, j = 0; 1591 i < ext_sg_entries && j < kern_sg_entries;) { 1592 uint8_t *ext_ptr, *kern_ptr; 1593 1594 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1595 kern_sglist[j].len - kern_watermark); 1596 1597 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1598 ext_ptr = ext_ptr + ext_watermark; 1599 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1600 /* 1601 * XXX KDM fix this! 1602 */ 1603 panic("need to implement bus address support"); 1604#if 0 1605 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1606#endif 1607 } else 1608 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1609 kern_ptr = kern_ptr + kern_watermark; 1610 1611 kern_watermark += len_to_copy; 1612 ext_watermark += len_to_copy; 1613 1614 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1615 CTL_FLAG_DATA_IN) { 1616 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1617 "bytes to user\n", len_to_copy)); 1618 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1619 "to %p\n", kern_ptr, ext_ptr)); 1620 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1621 ctl_set_internal_failure(ctsio, 1622 /*sks_valid*/ 0, 1623 /*retry_count*/ 0); 1624 goto bailout; 1625 } 1626 } else { 1627 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1628 "bytes from user\n", len_to_copy)); 1629 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1630 "to %p\n", ext_ptr, kern_ptr)); 1631 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1632 ctl_set_internal_failure(ctsio, 1633 /*sks_valid*/ 0, 1634 /*retry_count*/0); 1635 goto bailout; 1636 } 1637 } 1638 1639 len_copied += len_to_copy; 1640 1641 if (ext_sglist[i].len == ext_watermark) { 1642 i++; 1643 ext_watermark = 0; 1644 } 1645 1646 if (kern_sglist[j].len == kern_watermark) { 1647 j++; 1648 kern_watermark = 0; 1649 } 1650 } 1651 1652 ctsio->ext_data_filled += len_copied; 1653 1654 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1655 "kern_sg_entries: %d\n", ext_sg_entries, 1656 kern_sg_entries)); 1657 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1658 "kern_data_len = %d\n", ctsio->ext_data_len, 1659 ctsio->kern_data_len)); 1660 1661 1662 /* XXX KDM set residual?? */ 1663bailout: 1664 1665 if (ext_sglist_malloced != 0) 1666 free(ext_sglist, M_CTL); 1667 1668 return (CTL_RETVAL_COMPLETE); 1669} 1670 1671/* 1672 * Serialize a command that went down the "wrong" side, and so was sent to 1673 * this controller for execution. The logic is a little different than the 1674 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1675 * sent back to the other side, but in the success case, we execute the 1676 * command on this side (XFER mode) or tell the other side to execute it 1677 * (SER_ONLY mode). 1678 */ 1679static int 1680ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio, int have_lock) 1681{ 1682 struct ctl_softc *ctl_softc; 1683 union ctl_ha_msg msg_info; 1684 struct ctl_lun *lun; 1685 int retval = 0; 1686 uint32_t targ_lun; 1687 1688 ctl_softc = control_softc; 1689 if (have_lock == 0) 1690 mtx_lock(&ctl_softc->ctl_lock); 1691 1692 targ_lun = ctsio->io_hdr.nexus.targ_lun; 1693 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 1694 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 1695 lun = ctl_softc->ctl_luns[targ_lun]; 1696 if (lun==NULL) 1697 { 1698 /* 1699 * Why isn't LUN defined? The other side wouldn't 1700 * send a cmd if the LUN is undefined. 1701 */ 1702 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1703 1704 /* "Logical unit not supported" */ 1705 ctl_set_sense_data(&msg_info.scsi.sense_data, 1706 lun, 1707 /*sense_format*/SSD_TYPE_NONE, 1708 /*current_error*/ 1, 1709 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1710 /*asc*/ 0x25, 1711 /*ascq*/ 0x00, 1712 SSD_ELEM_NONE); 1713 1714 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1715 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1716 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1717 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1718 msg_info.hdr.serializing_sc = NULL; 1719 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1720 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1721 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1722 } 1723 if (have_lock == 0) 1724 mtx_unlock(&ctl_softc->ctl_lock); 1725 return(1); 1726 1727 } 1728 1729 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1730 1731 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1732 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1733 ooa_links))) { 1734 case CTL_ACTION_BLOCK: 1735 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1736 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1737 blocked_links); 1738 break; 1739 case CTL_ACTION_PASS: 1740 case CTL_ACTION_SKIP: 1741 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1742 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1743 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 1744 &ctsio->io_hdr, links); 1745 } else { 1746 1747 /* send msg back to other side */ 1748 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1749 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1750 msg_info.hdr.msg_type = CTL_MSG_R2R; 1751#if 0 1752 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1753#endif 1754 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1755 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1756 } 1757 } 1758 break; 1759 case CTL_ACTION_OVERLAP: 1760 /* OVERLAPPED COMMANDS ATTEMPTED */ 1761 ctl_set_sense_data(&msg_info.scsi.sense_data, 1762 lun, 1763 /*sense_format*/SSD_TYPE_NONE, 1764 /*current_error*/ 1, 1765 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1766 /*asc*/ 0x4E, 1767 /*ascq*/ 0x00, 1768 SSD_ELEM_NONE); 1769 1770 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1771 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1772 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1773 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1774 msg_info.hdr.serializing_sc = NULL; 1775 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1776#if 0 1777 printf("BAD JUJU:Major Bummer Overlap\n"); 1778#endif 1779 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1780 retval = 1; 1781 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1782 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1783 } 1784 break; 1785 case CTL_ACTION_OVERLAP_TAG: 1786 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1787 ctl_set_sense_data(&msg_info.scsi.sense_data, 1788 lun, 1789 /*sense_format*/SSD_TYPE_NONE, 1790 /*current_error*/ 1, 1791 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1792 /*asc*/ 0x4D, 1793 /*ascq*/ ctsio->tag_num & 0xff, 1794 SSD_ELEM_NONE); 1795 1796 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1797 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1798 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1799 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1800 msg_info.hdr.serializing_sc = NULL; 1801 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1802#if 0 1803 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1804#endif 1805 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1806 retval = 1; 1807 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1808 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1809 } 1810 break; 1811 case CTL_ACTION_ERROR: 1812 default: 1813 /* "Internal target failure" */ 1814 ctl_set_sense_data(&msg_info.scsi.sense_data, 1815 lun, 1816 /*sense_format*/SSD_TYPE_NONE, 1817 /*current_error*/ 1, 1818 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1819 /*asc*/ 0x44, 1820 /*ascq*/ 0x00, 1821 SSD_ELEM_NONE); 1822 1823 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1824 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1825 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1826 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1827 msg_info.hdr.serializing_sc = NULL; 1828 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1829#if 0 1830 printf("BAD JUJU:Major Bummer HW Error\n"); 1831#endif 1832 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1833 retval = 1; 1834 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1835 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1836 } 1837 break; 1838 } 1839 if (have_lock == 0) 1840 mtx_unlock(&ctl_softc->ctl_lock); 1841 return (retval); 1842} 1843 1844static int 1845ctl_ioctl_submit_wait(union ctl_io *io) 1846{ 1847 struct ctl_fe_ioctl_params params; 1848 ctl_fe_ioctl_state last_state; 1849 int done, retval; 1850 1851 retval = 0; 1852 1853 bzero(¶ms, sizeof(params)); 1854 1855 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1856 cv_init(¶ms.sem, "ctlioccv"); 1857 params.state = CTL_IOCTL_INPROG; 1858 last_state = params.state; 1859 1860 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1861 1862 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1863 1864 /* This shouldn't happen */ 1865 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1866 return (retval); 1867 1868 done = 0; 1869 1870 do { 1871 mtx_lock(¶ms.ioctl_mtx); 1872 /* 1873 * Check the state here, and don't sleep if the state has 1874 * already changed (i.e. wakeup has already occured, but we 1875 * weren't waiting yet). 1876 */ 1877 if (params.state == last_state) { 1878 /* XXX KDM cv_wait_sig instead? */ 1879 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1880 } 1881 last_state = params.state; 1882 1883 switch (params.state) { 1884 case CTL_IOCTL_INPROG: 1885 /* Why did we wake up? */ 1886 /* XXX KDM error here? */ 1887 mtx_unlock(¶ms.ioctl_mtx); 1888 break; 1889 case CTL_IOCTL_DATAMOVE: 1890 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1891 1892 /* 1893 * change last_state back to INPROG to avoid 1894 * deadlock on subsequent data moves. 1895 */ 1896 params.state = last_state = CTL_IOCTL_INPROG; 1897 1898 mtx_unlock(¶ms.ioctl_mtx); 1899 ctl_ioctl_do_datamove(&io->scsiio); 1900 /* 1901 * Note that in some cases, most notably writes, 1902 * this will queue the I/O and call us back later. 1903 * In other cases, generally reads, this routine 1904 * will immediately call back and wake us up, 1905 * probably using our own context. 1906 */ 1907 io->scsiio.be_move_done(io); 1908 break; 1909 case CTL_IOCTL_DONE: 1910 mtx_unlock(¶ms.ioctl_mtx); 1911 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1912 done = 1; 1913 break; 1914 default: 1915 mtx_unlock(¶ms.ioctl_mtx); 1916 /* XXX KDM error here? */ 1917 break; 1918 } 1919 } while (done == 0); 1920 1921 mtx_destroy(¶ms.ioctl_mtx); 1922 cv_destroy(¶ms.sem); 1923 1924 return (CTL_RETVAL_COMPLETE); 1925} 1926 1927static void 1928ctl_ioctl_datamove(union ctl_io *io) 1929{ 1930 struct ctl_fe_ioctl_params *params; 1931 1932 params = (struct ctl_fe_ioctl_params *) 1933 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1934 1935 mtx_lock(¶ms->ioctl_mtx); 1936 params->state = CTL_IOCTL_DATAMOVE; 1937 cv_broadcast(¶ms->sem); 1938 mtx_unlock(¶ms->ioctl_mtx); 1939} 1940 1941static void 1942ctl_ioctl_done(union ctl_io *io) 1943{ 1944 struct ctl_fe_ioctl_params *params; 1945 1946 params = (struct ctl_fe_ioctl_params *) 1947 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1948 1949 mtx_lock(¶ms->ioctl_mtx); 1950 params->state = CTL_IOCTL_DONE; 1951 cv_broadcast(¶ms->sem); 1952 mtx_unlock(¶ms->ioctl_mtx); 1953} 1954 1955static void 1956ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1957{ 1958 struct ctl_fe_ioctl_startstop_info *sd_info; 1959 1960 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1961 1962 sd_info->hs_info.status = metatask->status; 1963 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1964 sd_info->hs_info.luns_complete = 1965 metatask->taskinfo.startstop.luns_complete; 1966 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1967 1968 cv_broadcast(&sd_info->sem); 1969} 1970 1971static void 1972ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1973{ 1974 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1975 1976 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1977 1978 mtx_lock(fe_bbr_info->lock); 1979 fe_bbr_info->bbr_info->status = metatask->status; 1980 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1981 fe_bbr_info->wakeup_done = 1; 1982 mtx_unlock(fe_bbr_info->lock); 1983 1984 cv_broadcast(&fe_bbr_info->sem); 1985} 1986 1987/* 1988 * Returns 0 for success, errno for failure. 1989 */ 1990static int 1991ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1992 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1993{ 1994 union ctl_io *io; 1995 int retval; 1996 1997 retval = 0; 1998 1999 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 2000 2001 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 2002 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2003 ooa_links)) { 2004 struct ctl_ooa_entry *entry; 2005 2006 /* 2007 * If we've got more than we can fit, just count the 2008 * remaining entries. 2009 */ 2010 if (*cur_fill_num >= ooa_hdr->alloc_num) 2011 continue; 2012 2013 entry = &kern_entries[*cur_fill_num]; 2014 2015 entry->tag_num = io->scsiio.tag_num; 2016 entry->lun_num = lun->lun; 2017#ifdef CTL_TIME_IO 2018 entry->start_bt = io->io_hdr.start_bt; 2019#endif 2020 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 2021 entry->cdb_len = io->scsiio.cdb_len; 2022 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 2023 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 2024 2025 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 2026 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 2027 2028 if (io->io_hdr.flags & CTL_FLAG_ABORT) 2029 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 2030 2031 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 2032 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 2033 2034 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 2035 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 2036 } 2037 2038 return (retval); 2039} 2040 2041static void * 2042ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2043 size_t error_str_len) 2044{ 2045 void *kptr; 2046 2047 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2048 2049 if (copyin(user_addr, kptr, len) != 0) { 2050 snprintf(error_str, error_str_len, "Error copying %d bytes " 2051 "from user address %p to kernel address %p", len, 2052 user_addr, kptr); 2053 free(kptr, M_CTL); 2054 return (NULL); 2055 } 2056 2057 return (kptr); 2058} 2059 2060static void 2061ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2062{ 2063 int i; 2064 2065 if (be_args == NULL) 2066 return; 2067 2068 for (i = 0; i < num_be_args; i++) { 2069 free(be_args[i].kname, M_CTL); 2070 free(be_args[i].kvalue, M_CTL); 2071 } 2072 2073 free(be_args, M_CTL); 2074} 2075 2076static struct ctl_be_arg * 2077ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2078 char *error_str, size_t error_str_len) 2079{ 2080 struct ctl_be_arg *args; 2081 int i; 2082 2083 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2084 error_str, error_str_len); 2085 2086 if (args == NULL) 2087 goto bailout; 2088 2089 for (i = 0; i < num_be_args; i++) { 2090 args[i].kname = NULL; 2091 args[i].kvalue = NULL; 2092 } 2093 2094 for (i = 0; i < num_be_args; i++) { 2095 uint8_t *tmpptr; 2096 2097 args[i].kname = ctl_copyin_alloc(args[i].name, 2098 args[i].namelen, error_str, error_str_len); 2099 if (args[i].kname == NULL) 2100 goto bailout; 2101 2102 if (args[i].kname[args[i].namelen - 1] != '\0') { 2103 snprintf(error_str, error_str_len, "Argument %d " 2104 "name is not NUL-terminated", i); 2105 goto bailout; 2106 } 2107 2108 args[i].kvalue = NULL; 2109 2110 tmpptr = ctl_copyin_alloc(args[i].value, 2111 args[i].vallen, error_str, error_str_len); 2112 if (tmpptr == NULL) 2113 goto bailout; 2114 2115 args[i].kvalue = tmpptr; 2116 2117 if ((args[i].flags & CTL_BEARG_ASCII) 2118 && (tmpptr[args[i].vallen - 1] != '\0')) { 2119 snprintf(error_str, error_str_len, "Argument %d " 2120 "value is not NUL-terminated", i); 2121 goto bailout; 2122 } 2123 } 2124 2125 return (args); 2126bailout: 2127 2128 ctl_free_args(num_be_args, args); 2129 2130 return (NULL); 2131} 2132 2133/* 2134 * Escape characters that are illegal or not recommended in XML. 2135 */ 2136int 2137ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2138{ 2139 int retval; 2140 2141 retval = 0; 2142 2143 for (; *str; str++) { 2144 switch (*str) { 2145 case '&': 2146 retval = sbuf_printf(sb, "&"); 2147 break; 2148 case '>': 2149 retval = sbuf_printf(sb, ">"); 2150 break; 2151 case '<': 2152 retval = sbuf_printf(sb, "<"); 2153 break; 2154 default: 2155 retval = sbuf_putc(sb, *str); 2156 break; 2157 } 2158 2159 if (retval != 0) 2160 break; 2161 2162 } 2163 2164 return (retval); 2165} 2166 2167static int 2168ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2169 struct thread *td) 2170{ 2171 struct ctl_softc *softc; 2172 int retval; 2173 2174 softc = control_softc; 2175 2176 retval = 0; 2177 2178 switch (cmd) { 2179 case CTL_IO: { 2180 union ctl_io *io; 2181 void *pool_tmp; 2182 2183 /* 2184 * If we haven't been "enabled", don't allow any SCSI I/O 2185 * to this FETD. 2186 */ 2187 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2188 retval = -EPERM; 2189 break; 2190 } 2191 2192 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2193 if (io == NULL) { 2194 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2195 retval = -ENOSPC; 2196 break; 2197 } 2198 2199 /* 2200 * Need to save the pool reference so it doesn't get 2201 * spammed by the user's ctl_io. 2202 */ 2203 pool_tmp = io->io_hdr.pool; 2204 2205 memcpy(io, (void *)addr, sizeof(*io)); 2206 2207 io->io_hdr.pool = pool_tmp; 2208 /* 2209 * No status yet, so make sure the status is set properly. 2210 */ 2211 io->io_hdr.status = CTL_STATUS_NONE; 2212 2213 /* 2214 * The user sets the initiator ID, target and LUN IDs. 2215 */ 2216 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2217 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2218 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2219 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2220 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2221 2222 retval = ctl_ioctl_submit_wait(io); 2223 2224 if (retval != 0) { 2225 ctl_free_io(io); 2226 break; 2227 } 2228 2229 memcpy((void *)addr, io, sizeof(*io)); 2230 2231 /* return this to our pool */ 2232 ctl_free_io(io); 2233 2234 break; 2235 } 2236 case CTL_ENABLE_PORT: 2237 case CTL_DISABLE_PORT: 2238 case CTL_SET_PORT_WWNS: { 2239 struct ctl_frontend *fe; 2240 struct ctl_port_entry *entry; 2241 2242 entry = (struct ctl_port_entry *)addr; 2243 2244 mtx_lock(&softc->ctl_lock); 2245 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2246 int action, done; 2247 2248 action = 0; 2249 done = 0; 2250 2251 if ((entry->port_type == CTL_PORT_NONE) 2252 && (entry->targ_port == fe->targ_port)) { 2253 /* 2254 * If the user only wants to enable or 2255 * disable or set WWNs on a specific port, 2256 * do the operation and we're done. 2257 */ 2258 action = 1; 2259 done = 1; 2260 } else if (entry->port_type & fe->port_type) { 2261 /* 2262 * Compare the user's type mask with the 2263 * particular frontend type to see if we 2264 * have a match. 2265 */ 2266 action = 1; 2267 done = 0; 2268 2269 /* 2270 * Make sure the user isn't trying to set 2271 * WWNs on multiple ports at the same time. 2272 */ 2273 if (cmd == CTL_SET_PORT_WWNS) { 2274 printf("%s: Can't set WWNs on " 2275 "multiple ports\n", __func__); 2276 retval = EINVAL; 2277 break; 2278 } 2279 } 2280 if (action != 0) { 2281 /* 2282 * XXX KDM we have to drop the lock here, 2283 * because the online/offline operations 2284 * can potentially block. We need to 2285 * reference count the frontends so they 2286 * can't go away, 2287 */ 2288 mtx_unlock(&softc->ctl_lock); 2289 2290 if (cmd == CTL_ENABLE_PORT) { 2291 struct ctl_lun *lun; 2292 2293 STAILQ_FOREACH(lun, &softc->lun_list, 2294 links) { 2295 fe->lun_enable(fe->targ_lun_arg, 2296 lun->target, 2297 lun->lun); 2298 } 2299 2300 ctl_frontend_online(fe); 2301 } else if (cmd == CTL_DISABLE_PORT) { 2302 struct ctl_lun *lun; 2303 2304 ctl_frontend_offline(fe); 2305 2306 STAILQ_FOREACH(lun, &softc->lun_list, 2307 links) { 2308 fe->lun_disable( 2309 fe->targ_lun_arg, 2310 lun->target, 2311 lun->lun); 2312 } 2313 } 2314 2315 mtx_lock(&softc->ctl_lock); 2316 2317 if (cmd == CTL_SET_PORT_WWNS) 2318 ctl_frontend_set_wwns(fe, 2319 (entry->flags & CTL_PORT_WWNN_VALID) ? 2320 1 : 0, entry->wwnn, 2321 (entry->flags & CTL_PORT_WWPN_VALID) ? 2322 1 : 0, entry->wwpn); 2323 } 2324 if (done != 0) 2325 break; 2326 } 2327 mtx_unlock(&softc->ctl_lock); 2328 break; 2329 } 2330 case CTL_GET_PORT_LIST: { 2331 struct ctl_frontend *fe; 2332 struct ctl_port_list *list; 2333 int i; 2334 2335 list = (struct ctl_port_list *)addr; 2336 2337 if (list->alloc_len != (list->alloc_num * 2338 sizeof(struct ctl_port_entry))) { 2339 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2340 "alloc_num %u * sizeof(struct ctl_port_entry) " 2341 "%zu\n", __func__, list->alloc_len, 2342 list->alloc_num, sizeof(struct ctl_port_entry)); 2343 retval = EINVAL; 2344 break; 2345 } 2346 list->fill_len = 0; 2347 list->fill_num = 0; 2348 list->dropped_num = 0; 2349 i = 0; 2350 mtx_lock(&softc->ctl_lock); 2351 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2352 struct ctl_port_entry entry, *list_entry; 2353 2354 if (list->fill_num >= list->alloc_num) { 2355 list->dropped_num++; 2356 continue; 2357 } 2358 2359 entry.port_type = fe->port_type; 2360 strlcpy(entry.port_name, fe->port_name, 2361 sizeof(entry.port_name)); 2362 entry.targ_port = fe->targ_port; 2363 entry.physical_port = fe->physical_port; 2364 entry.virtual_port = fe->virtual_port; 2365 entry.wwnn = fe->wwnn; 2366 entry.wwpn = fe->wwpn; 2367 if (fe->status & CTL_PORT_STATUS_ONLINE) 2368 entry.online = 1; 2369 else 2370 entry.online = 0; 2371 2372 list_entry = &list->entries[i]; 2373 2374 retval = copyout(&entry, list_entry, sizeof(entry)); 2375 if (retval != 0) { 2376 printf("%s: CTL_GET_PORT_LIST: copyout " 2377 "returned %d\n", __func__, retval); 2378 break; 2379 } 2380 i++; 2381 list->fill_num++; 2382 list->fill_len += sizeof(entry); 2383 } 2384 mtx_unlock(&softc->ctl_lock); 2385 2386 /* 2387 * If this is non-zero, we had a copyout fault, so there's 2388 * probably no point in attempting to set the status inside 2389 * the structure. 2390 */ 2391 if (retval != 0) 2392 break; 2393 2394 if (list->dropped_num > 0) 2395 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2396 else 2397 list->status = CTL_PORT_LIST_OK; 2398 break; 2399 } 2400 case CTL_DUMP_OOA: { 2401 struct ctl_lun *lun; 2402 union ctl_io *io; 2403 char printbuf[128]; 2404 struct sbuf sb; 2405 2406 mtx_lock(&softc->ctl_lock); 2407 printf("Dumping OOA queues:\n"); 2408 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2409 for (io = (union ctl_io *)TAILQ_FIRST( 2410 &lun->ooa_queue); io != NULL; 2411 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2412 ooa_links)) { 2413 sbuf_new(&sb, printbuf, sizeof(printbuf), 2414 SBUF_FIXEDLEN); 2415 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2416 (intmax_t)lun->lun, 2417 io->scsiio.tag_num, 2418 (io->io_hdr.flags & 2419 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2420 (io->io_hdr.flags & 2421 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2422 (io->io_hdr.flags & 2423 CTL_FLAG_ABORT) ? " ABORT" : "", 2424 (io->io_hdr.flags & 2425 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2426 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2427 sbuf_finish(&sb); 2428 printf("%s\n", sbuf_data(&sb)); 2429 } 2430 } 2431 printf("OOA queues dump done\n"); 2432 mtx_unlock(&softc->ctl_lock); 2433 break; 2434 } 2435 case CTL_GET_OOA: { 2436 struct ctl_lun *lun; 2437 struct ctl_ooa *ooa_hdr; 2438 struct ctl_ooa_entry *entries; 2439 uint32_t cur_fill_num; 2440 2441 ooa_hdr = (struct ctl_ooa *)addr; 2442 2443 if ((ooa_hdr->alloc_len == 0) 2444 || (ooa_hdr->alloc_num == 0)) { 2445 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2446 "must be non-zero\n", __func__, 2447 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2448 retval = EINVAL; 2449 break; 2450 } 2451 2452 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2453 sizeof(struct ctl_ooa_entry))) { 2454 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2455 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2456 __func__, ooa_hdr->alloc_len, 2457 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2458 retval = EINVAL; 2459 break; 2460 } 2461 2462 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2463 if (entries == NULL) { 2464 printf("%s: could not allocate %d bytes for OOA " 2465 "dump\n", __func__, ooa_hdr->alloc_len); 2466 retval = ENOMEM; 2467 break; 2468 } 2469 2470 mtx_lock(&softc->ctl_lock); 2471 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2472 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2473 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2474 mtx_unlock(&softc->ctl_lock); 2475 free(entries, M_CTL); 2476 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2477 __func__, (uintmax_t)ooa_hdr->lun_num); 2478 retval = EINVAL; 2479 break; 2480 } 2481 2482 cur_fill_num = 0; 2483 2484 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2485 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2486 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2487 ooa_hdr, entries); 2488 if (retval != 0) 2489 break; 2490 } 2491 if (retval != 0) { 2492 mtx_unlock(&softc->ctl_lock); 2493 free(entries, M_CTL); 2494 break; 2495 } 2496 } else { 2497 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2498 2499 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2500 entries); 2501 } 2502 mtx_unlock(&softc->ctl_lock); 2503 2504 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2505 ooa_hdr->fill_len = ooa_hdr->fill_num * 2506 sizeof(struct ctl_ooa_entry); 2507 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2508 if (retval != 0) { 2509 printf("%s: error copying out %d bytes for OOA dump\n", 2510 __func__, ooa_hdr->fill_len); 2511 } 2512 2513 getbintime(&ooa_hdr->cur_bt); 2514 2515 if (cur_fill_num > ooa_hdr->alloc_num) { 2516 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2517 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2518 } else { 2519 ooa_hdr->dropped_num = 0; 2520 ooa_hdr->status = CTL_OOA_OK; 2521 } 2522 2523 free(entries, M_CTL); 2524 break; 2525 } 2526 case CTL_CHECK_OOA: { 2527 union ctl_io *io; 2528 struct ctl_lun *lun; 2529 struct ctl_ooa_info *ooa_info; 2530 2531 2532 ooa_info = (struct ctl_ooa_info *)addr; 2533 2534 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2535 ooa_info->status = CTL_OOA_INVALID_LUN; 2536 break; 2537 } 2538 mtx_lock(&softc->ctl_lock); 2539 lun = softc->ctl_luns[ooa_info->lun_id]; 2540 if (lun == NULL) { 2541 mtx_unlock(&softc->ctl_lock); 2542 ooa_info->status = CTL_OOA_INVALID_LUN; 2543 break; 2544 } 2545 2546 ooa_info->num_entries = 0; 2547 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2548 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2549 &io->io_hdr, ooa_links)) { 2550 ooa_info->num_entries++; 2551 } 2552 2553 mtx_unlock(&softc->ctl_lock); 2554 ooa_info->status = CTL_OOA_SUCCESS; 2555 2556 break; 2557 } 2558 case CTL_HARD_START: 2559 case CTL_HARD_STOP: { 2560 struct ctl_fe_ioctl_startstop_info ss_info; 2561 struct cfi_metatask *metatask; 2562 struct mtx hs_mtx; 2563 2564 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2565 2566 cv_init(&ss_info.sem, "hard start/stop cv" ); 2567 2568 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2569 if (metatask == NULL) { 2570 retval = ENOMEM; 2571 mtx_destroy(&hs_mtx); 2572 break; 2573 } 2574 2575 if (cmd == CTL_HARD_START) 2576 metatask->tasktype = CFI_TASK_STARTUP; 2577 else 2578 metatask->tasktype = CFI_TASK_SHUTDOWN; 2579 2580 metatask->callback = ctl_ioctl_hard_startstop_callback; 2581 metatask->callback_arg = &ss_info; 2582 2583 cfi_action(metatask); 2584 2585 /* Wait for the callback */ 2586 mtx_lock(&hs_mtx); 2587 cv_wait_sig(&ss_info.sem, &hs_mtx); 2588 mtx_unlock(&hs_mtx); 2589 2590 /* 2591 * All information has been copied from the metatask by the 2592 * time cv_broadcast() is called, so we free the metatask here. 2593 */ 2594 cfi_free_metatask(metatask); 2595 2596 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2597 2598 mtx_destroy(&hs_mtx); 2599 break; 2600 } 2601 case CTL_BBRREAD: { 2602 struct ctl_bbrread_info *bbr_info; 2603 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2604 struct mtx bbr_mtx; 2605 struct cfi_metatask *metatask; 2606 2607 bbr_info = (struct ctl_bbrread_info *)addr; 2608 2609 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2610 2611 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2612 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2613 2614 fe_bbr_info.bbr_info = bbr_info; 2615 fe_bbr_info.lock = &bbr_mtx; 2616 2617 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2618 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2619 2620 if (metatask == NULL) { 2621 mtx_destroy(&bbr_mtx); 2622 cv_destroy(&fe_bbr_info.sem); 2623 retval = ENOMEM; 2624 break; 2625 } 2626 metatask->tasktype = CFI_TASK_BBRREAD; 2627 metatask->callback = ctl_ioctl_bbrread_callback; 2628 metatask->callback_arg = &fe_bbr_info; 2629 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2630 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2631 metatask->taskinfo.bbrread.len = bbr_info->len; 2632 2633 cfi_action(metatask); 2634 2635 mtx_lock(&bbr_mtx); 2636 while (fe_bbr_info.wakeup_done == 0) 2637 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2638 mtx_unlock(&bbr_mtx); 2639 2640 bbr_info->status = metatask->status; 2641 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2642 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2643 memcpy(&bbr_info->sense_data, 2644 &metatask->taskinfo.bbrread.sense_data, 2645 ctl_min(sizeof(bbr_info->sense_data), 2646 sizeof(metatask->taskinfo.bbrread.sense_data))); 2647 2648 cfi_free_metatask(metatask); 2649 2650 mtx_destroy(&bbr_mtx); 2651 cv_destroy(&fe_bbr_info.sem); 2652 2653 break; 2654 } 2655 case CTL_DELAY_IO: { 2656 struct ctl_io_delay_info *delay_info; 2657#ifdef CTL_IO_DELAY 2658 struct ctl_lun *lun; 2659#endif /* CTL_IO_DELAY */ 2660 2661 delay_info = (struct ctl_io_delay_info *)addr; 2662 2663#ifdef CTL_IO_DELAY 2664 mtx_lock(&softc->ctl_lock); 2665 2666 if ((delay_info->lun_id > CTL_MAX_LUNS) 2667 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2668 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2669 } else { 2670 lun = softc->ctl_luns[delay_info->lun_id]; 2671 2672 delay_info->status = CTL_DELAY_STATUS_OK; 2673 2674 switch (delay_info->delay_type) { 2675 case CTL_DELAY_TYPE_CONT: 2676 break; 2677 case CTL_DELAY_TYPE_ONESHOT: 2678 break; 2679 default: 2680 delay_info->status = 2681 CTL_DELAY_STATUS_INVALID_TYPE; 2682 break; 2683 } 2684 2685 switch (delay_info->delay_loc) { 2686 case CTL_DELAY_LOC_DATAMOVE: 2687 lun->delay_info.datamove_type = 2688 delay_info->delay_type; 2689 lun->delay_info.datamove_delay = 2690 delay_info->delay_secs; 2691 break; 2692 case CTL_DELAY_LOC_DONE: 2693 lun->delay_info.done_type = 2694 delay_info->delay_type; 2695 lun->delay_info.done_delay = 2696 delay_info->delay_secs; 2697 break; 2698 default: 2699 delay_info->status = 2700 CTL_DELAY_STATUS_INVALID_LOC; 2701 break; 2702 } 2703 } 2704 2705 mtx_unlock(&softc->ctl_lock); 2706#else 2707 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2708#endif /* CTL_IO_DELAY */ 2709 break; 2710 } 2711 case CTL_REALSYNC_SET: { 2712 int *syncstate; 2713 2714 syncstate = (int *)addr; 2715 2716 mtx_lock(&softc->ctl_lock); 2717 switch (*syncstate) { 2718 case 0: 2719 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2720 break; 2721 case 1: 2722 softc->flags |= CTL_FLAG_REAL_SYNC; 2723 break; 2724 default: 2725 retval = -EINVAL; 2726 break; 2727 } 2728 mtx_unlock(&softc->ctl_lock); 2729 break; 2730 } 2731 case CTL_REALSYNC_GET: { 2732 int *syncstate; 2733 2734 syncstate = (int*)addr; 2735 2736 mtx_lock(&softc->ctl_lock); 2737 if (softc->flags & CTL_FLAG_REAL_SYNC) 2738 *syncstate = 1; 2739 else 2740 *syncstate = 0; 2741 mtx_unlock(&softc->ctl_lock); 2742 2743 break; 2744 } 2745 case CTL_SETSYNC: 2746 case CTL_GETSYNC: { 2747 struct ctl_sync_info *sync_info; 2748 struct ctl_lun *lun; 2749 2750 sync_info = (struct ctl_sync_info *)addr; 2751 2752 mtx_lock(&softc->ctl_lock); 2753 lun = softc->ctl_luns[sync_info->lun_id]; 2754 if (lun == NULL) { 2755 mtx_unlock(&softc->ctl_lock); 2756 sync_info->status = CTL_GS_SYNC_NO_LUN; 2757 } 2758 /* 2759 * Get or set the sync interval. We're not bounds checking 2760 * in the set case, hopefully the user won't do something 2761 * silly. 2762 */ 2763 if (cmd == CTL_GETSYNC) 2764 sync_info->sync_interval = lun->sync_interval; 2765 else 2766 lun->sync_interval = sync_info->sync_interval; 2767 2768 mtx_unlock(&softc->ctl_lock); 2769 2770 sync_info->status = CTL_GS_SYNC_OK; 2771 2772 break; 2773 } 2774 case CTL_GETSTATS: { 2775 struct ctl_stats *stats; 2776 struct ctl_lun *lun; 2777 int i; 2778 2779 stats = (struct ctl_stats *)addr; 2780 2781 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2782 stats->alloc_len) { 2783 stats->status = CTL_SS_NEED_MORE_SPACE; 2784 stats->num_luns = softc->num_luns; 2785 break; 2786 } 2787 /* 2788 * XXX KDM no locking here. If the LUN list changes, 2789 * things can blow up. 2790 */ 2791 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2792 i++, lun = STAILQ_NEXT(lun, links)) { 2793 retval = copyout(&lun->stats, &stats->lun_stats[i], 2794 sizeof(lun->stats)); 2795 if (retval != 0) 2796 break; 2797 } 2798 stats->num_luns = softc->num_luns; 2799 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2800 softc->num_luns; 2801 stats->status = CTL_SS_OK; 2802#ifdef CTL_TIME_IO 2803 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2804#else 2805 stats->flags = CTL_STATS_FLAG_NONE; 2806#endif 2807 getnanouptime(&stats->timestamp); 2808 break; 2809 } 2810 case CTL_ERROR_INJECT: { 2811 struct ctl_error_desc *err_desc, *new_err_desc; 2812 struct ctl_lun *lun; 2813 2814 err_desc = (struct ctl_error_desc *)addr; 2815 2816 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2817 M_WAITOK | M_ZERO); 2818 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2819 2820 mtx_lock(&softc->ctl_lock); 2821 lun = softc->ctl_luns[err_desc->lun_id]; 2822 if (lun == NULL) { 2823 mtx_unlock(&softc->ctl_lock); 2824 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2825 __func__, (uintmax_t)err_desc->lun_id); 2826 retval = EINVAL; 2827 break; 2828 } 2829 2830 /* 2831 * We could do some checking here to verify the validity 2832 * of the request, but given the complexity of error 2833 * injection requests, the checking logic would be fairly 2834 * complex. 2835 * 2836 * For now, if the request is invalid, it just won't get 2837 * executed and might get deleted. 2838 */ 2839 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2840 2841 /* 2842 * XXX KDM check to make sure the serial number is unique, 2843 * in case we somehow manage to wrap. That shouldn't 2844 * happen for a very long time, but it's the right thing to 2845 * do. 2846 */ 2847 new_err_desc->serial = lun->error_serial; 2848 err_desc->serial = lun->error_serial; 2849 lun->error_serial++; 2850 2851 mtx_unlock(&softc->ctl_lock); 2852 break; 2853 } 2854 case CTL_ERROR_INJECT_DELETE: { 2855 struct ctl_error_desc *delete_desc, *desc, *desc2; 2856 struct ctl_lun *lun; 2857 int delete_done; 2858 2859 delete_desc = (struct ctl_error_desc *)addr; 2860 delete_done = 0; 2861 2862 mtx_lock(&softc->ctl_lock); 2863 lun = softc->ctl_luns[delete_desc->lun_id]; 2864 if (lun == NULL) { 2865 mtx_unlock(&softc->ctl_lock); 2866 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2867 __func__, (uintmax_t)delete_desc->lun_id); 2868 retval = EINVAL; 2869 break; 2870 } 2871 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2872 if (desc->serial != delete_desc->serial) 2873 continue; 2874 2875 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2876 links); 2877 free(desc, M_CTL); 2878 delete_done = 1; 2879 } 2880 mtx_unlock(&softc->ctl_lock); 2881 if (delete_done == 0) { 2882 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2883 "error serial %ju on LUN %u\n", __func__, 2884 delete_desc->serial, delete_desc->lun_id); 2885 retval = EINVAL; 2886 break; 2887 } 2888 break; 2889 } 2890 case CTL_DUMP_STRUCTS: { 2891 int i, j, k; 2892 struct ctl_frontend *fe; 2893 2894 printf("CTL IID to WWPN map start:\n"); 2895 for (i = 0; i < CTL_MAX_PORTS; i++) { 2896 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2897 if (softc->wwpn_iid[i][j].in_use == 0) 2898 continue; 2899 2900 printf("port %d iid %u WWPN %#jx\n", 2901 softc->wwpn_iid[i][j].port, 2902 softc->wwpn_iid[i][j].iid, 2903 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2904 } 2905 } 2906 printf("CTL IID to WWPN map end\n"); 2907 printf("CTL Persistent Reservation information start:\n"); 2908 for (i = 0; i < CTL_MAX_LUNS; i++) { 2909 struct ctl_lun *lun; 2910 2911 lun = softc->ctl_luns[i]; 2912 2913 if ((lun == NULL) 2914 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2915 continue; 2916 2917 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2918 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2919 if (lun->per_res[j+k].registered == 0) 2920 continue; 2921 printf("LUN %d port %d iid %d key " 2922 "%#jx\n", i, j, k, 2923 (uintmax_t)scsi_8btou64( 2924 lun->per_res[j+k].res_key.key)); 2925 } 2926 } 2927 } 2928 printf("CTL Persistent Reservation information end\n"); 2929 printf("CTL Frontends:\n"); 2930 /* 2931 * XXX KDM calling this without a lock. We'd likely want 2932 * to drop the lock before calling the frontend's dump 2933 * routine anyway. 2934 */ 2935 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2936 printf("Frontend %s Type %u pport %d vport %d WWNN " 2937 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2938 fe->physical_port, fe->virtual_port, 2939 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2940 2941 /* 2942 * Frontends are not required to support the dump 2943 * routine. 2944 */ 2945 if (fe->fe_dump == NULL) 2946 continue; 2947 2948 fe->fe_dump(); 2949 } 2950 printf("CTL Frontend information end\n"); 2951 break; 2952 } 2953 case CTL_LUN_REQ: { 2954 struct ctl_lun_req *lun_req; 2955 struct ctl_backend_driver *backend; 2956 2957 lun_req = (struct ctl_lun_req *)addr; 2958 2959 backend = ctl_backend_find(lun_req->backend); 2960 if (backend == NULL) { 2961 lun_req->status = CTL_LUN_ERROR; 2962 snprintf(lun_req->error_str, 2963 sizeof(lun_req->error_str), 2964 "Backend \"%s\" not found.", 2965 lun_req->backend); 2966 break; 2967 } 2968 if (lun_req->num_be_args > 0) { 2969 lun_req->kern_be_args = ctl_copyin_args( 2970 lun_req->num_be_args, 2971 lun_req->be_args, 2972 lun_req->error_str, 2973 sizeof(lun_req->error_str)); 2974 if (lun_req->kern_be_args == NULL) { 2975 lun_req->status = CTL_LUN_ERROR; 2976 break; 2977 } 2978 } 2979 2980 retval = backend->ioctl(dev, cmd, addr, flag, td); 2981 2982 if (lun_req->num_be_args > 0) { 2983 ctl_free_args(lun_req->num_be_args, 2984 lun_req->kern_be_args); 2985 } 2986 break; 2987 } 2988 case CTL_LUN_LIST: { 2989 struct sbuf *sb; 2990 struct ctl_lun *lun; 2991 struct ctl_lun_list *list; 2992 struct ctl_be_lun_option *opt; 2993 2994 list = (struct ctl_lun_list *)addr; 2995 2996 /* 2997 * Allocate a fixed length sbuf here, based on the length 2998 * of the user's buffer. We could allocate an auto-extending 2999 * buffer, and then tell the user how much larger our 3000 * amount of data is than his buffer, but that presents 3001 * some problems: 3002 * 3003 * 1. The sbuf(9) routines use a blocking malloc, and so 3004 * we can't hold a lock while calling them with an 3005 * auto-extending buffer. 3006 * 3007 * 2. There is not currently a LUN reference counting 3008 * mechanism, outside of outstanding transactions on 3009 * the LUN's OOA queue. So a LUN could go away on us 3010 * while we're getting the LUN number, backend-specific 3011 * information, etc. Thus, given the way things 3012 * currently work, we need to hold the CTL lock while 3013 * grabbing LUN information. 3014 * 3015 * So, from the user's standpoint, the best thing to do is 3016 * allocate what he thinks is a reasonable buffer length, 3017 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 3018 * double the buffer length and try again. (And repeat 3019 * that until he succeeds.) 3020 */ 3021 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3022 if (sb == NULL) { 3023 list->status = CTL_LUN_LIST_ERROR; 3024 snprintf(list->error_str, sizeof(list->error_str), 3025 "Unable to allocate %d bytes for LUN list", 3026 list->alloc_len); 3027 break; 3028 } 3029 3030 sbuf_printf(sb, "<ctllunlist>\n"); 3031 3032 mtx_lock(&softc->ctl_lock); 3033 3034 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3035 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3036 (uintmax_t)lun->lun); 3037 3038 /* 3039 * Bail out as soon as we see that we've overfilled 3040 * the buffer. 3041 */ 3042 if (retval != 0) 3043 break; 3044 3045 retval = sbuf_printf(sb, "<backend_type>%s" 3046 "</backend_type>\n", 3047 (lun->backend == NULL) ? "none" : 3048 lun->backend->name); 3049 3050 if (retval != 0) 3051 break; 3052 3053 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 3054 lun->be_lun->lun_type); 3055 3056 if (retval != 0) 3057 break; 3058 3059 if (lun->backend == NULL) { 3060 retval = sbuf_printf(sb, "</lun>\n"); 3061 if (retval != 0) 3062 break; 3063 continue; 3064 } 3065 3066 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3067 (lun->be_lun->maxlba > 0) ? 3068 lun->be_lun->maxlba + 1 : 0); 3069 3070 if (retval != 0) 3071 break; 3072 3073 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3074 lun->be_lun->blocksize); 3075 3076 if (retval != 0) 3077 break; 3078 3079 retval = sbuf_printf(sb, "<serial_number>"); 3080 3081 if (retval != 0) 3082 break; 3083 3084 retval = ctl_sbuf_printf_esc(sb, 3085 lun->be_lun->serial_num); 3086 3087 if (retval != 0) 3088 break; 3089 3090 retval = sbuf_printf(sb, "</serial_number>\n"); 3091 3092 if (retval != 0) 3093 break; 3094 3095 retval = sbuf_printf(sb, "<device_id>"); 3096 3097 if (retval != 0) 3098 break; 3099 3100 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3101 3102 if (retval != 0) 3103 break; 3104 3105 retval = sbuf_printf(sb, "</device_id>\n"); 3106 3107 if (retval != 0) 3108 break; 3109 3110 if (lun->backend->lun_info != NULL) { 3111 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3112 if (retval != 0) 3113 break; 3114 } 3115 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3116 retval = sbuf_printf(sb, "<%s>%s</%s>", opt->name, opt->value, opt->name); 3117 if (retval != 0) 3118 break; 3119 } 3120 3121 retval = sbuf_printf(sb, "</lun>\n"); 3122 3123 if (retval != 0) 3124 break; 3125 } 3126 mtx_unlock(&softc->ctl_lock); 3127 3128 if ((retval != 0) 3129 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3130 retval = 0; 3131 sbuf_delete(sb); 3132 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3133 snprintf(list->error_str, sizeof(list->error_str), 3134 "Out of space, %d bytes is too small", 3135 list->alloc_len); 3136 break; 3137 } 3138 3139 sbuf_finish(sb); 3140 3141 retval = copyout(sbuf_data(sb), list->lun_xml, 3142 sbuf_len(sb) + 1); 3143 3144 list->fill_len = sbuf_len(sb) + 1; 3145 list->status = CTL_LUN_LIST_OK; 3146 sbuf_delete(sb); 3147 break; 3148 } 3149 case CTL_ISCSI: { 3150 struct ctl_iscsi *ci; 3151 struct ctl_frontend *fe; 3152 3153 ci = (struct ctl_iscsi *)addr; 3154 3155 mtx_lock(&softc->ctl_lock); 3156 STAILQ_FOREACH(fe, &softc->fe_list, links) { 3157 if (strcmp(fe->port_name, "iscsi") == 0) 3158 break; 3159 } 3160 mtx_unlock(&softc->ctl_lock); 3161 3162 if (fe == NULL) { 3163 ci->status = CTL_ISCSI_ERROR; 3164 snprintf(ci->error_str, sizeof(ci->error_str), "Backend \"iscsi\" not found."); 3165 break; 3166 } 3167 3168 retval = fe->ioctl(dev, cmd, addr, flag, td); 3169 break; 3170 } 3171 default: { 3172 /* XXX KDM should we fix this? */ 3173#if 0 3174 struct ctl_backend_driver *backend; 3175 unsigned int type; 3176 int found; 3177 3178 found = 0; 3179 3180 /* 3181 * We encode the backend type as the ioctl type for backend 3182 * ioctls. So parse it out here, and then search for a 3183 * backend of this type. 3184 */ 3185 type = _IOC_TYPE(cmd); 3186 3187 STAILQ_FOREACH(backend, &softc->be_list, links) { 3188 if (backend->type == type) { 3189 found = 1; 3190 break; 3191 } 3192 } 3193 if (found == 0) { 3194 printf("ctl: unknown ioctl command %#lx or backend " 3195 "%d\n", cmd, type); 3196 retval = -EINVAL; 3197 break; 3198 } 3199 retval = backend->ioctl(dev, cmd, addr, flag, td); 3200#endif 3201 retval = ENOTTY; 3202 break; 3203 } 3204 } 3205 return (retval); 3206} 3207 3208uint32_t 3209ctl_get_initindex(struct ctl_nexus *nexus) 3210{ 3211 if (nexus->targ_port < CTL_MAX_PORTS) 3212 return (nexus->initid.id + 3213 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3214 else 3215 return (nexus->initid.id + 3216 ((nexus->targ_port - CTL_MAX_PORTS) * 3217 CTL_MAX_INIT_PER_PORT)); 3218} 3219 3220uint32_t 3221ctl_get_resindex(struct ctl_nexus *nexus) 3222{ 3223 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3224} 3225 3226uint32_t 3227ctl_port_idx(int port_num) 3228{ 3229 if (port_num < CTL_MAX_PORTS) 3230 return(port_num); 3231 else 3232 return(port_num - CTL_MAX_PORTS); 3233} 3234 3235/* 3236 * Note: This only works for bitmask sizes that are at least 32 bits, and 3237 * that are a power of 2. 3238 */ 3239int 3240ctl_ffz(uint32_t *mask, uint32_t size) 3241{ 3242 uint32_t num_chunks, num_pieces; 3243 int i, j; 3244 3245 num_chunks = (size >> 5); 3246 if (num_chunks == 0) 3247 num_chunks++; 3248 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3249 3250 for (i = 0; i < num_chunks; i++) { 3251 for (j = 0; j < num_pieces; j++) { 3252 if ((mask[i] & (1 << j)) == 0) 3253 return ((i << 5) + j); 3254 } 3255 } 3256 3257 return (-1); 3258} 3259 3260int 3261ctl_set_mask(uint32_t *mask, uint32_t bit) 3262{ 3263 uint32_t chunk, piece; 3264 3265 chunk = bit >> 5; 3266 piece = bit % (sizeof(uint32_t) * 8); 3267 3268 if ((mask[chunk] & (1 << piece)) != 0) 3269 return (-1); 3270 else 3271 mask[chunk] |= (1 << piece); 3272 3273 return (0); 3274} 3275 3276int 3277ctl_clear_mask(uint32_t *mask, uint32_t bit) 3278{ 3279 uint32_t chunk, piece; 3280 3281 chunk = bit >> 5; 3282 piece = bit % (sizeof(uint32_t) * 8); 3283 3284 if ((mask[chunk] & (1 << piece)) == 0) 3285 return (-1); 3286 else 3287 mask[chunk] &= ~(1 << piece); 3288 3289 return (0); 3290} 3291 3292int 3293ctl_is_set(uint32_t *mask, uint32_t bit) 3294{ 3295 uint32_t chunk, piece; 3296 3297 chunk = bit >> 5; 3298 piece = bit % (sizeof(uint32_t) * 8); 3299 3300 if ((mask[chunk] & (1 << piece)) == 0) 3301 return (0); 3302 else 3303 return (1); 3304} 3305 3306#ifdef unused 3307/* 3308 * The bus, target and lun are optional, they can be filled in later. 3309 * can_wait is used to determine whether we can wait on the malloc or not. 3310 */ 3311union ctl_io* 3312ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3313 uint32_t targ_lun, int can_wait) 3314{ 3315 union ctl_io *io; 3316 3317 if (can_wait) 3318 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3319 else 3320 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3321 3322 if (io != NULL) { 3323 io->io_hdr.io_type = io_type; 3324 io->io_hdr.targ_port = targ_port; 3325 /* 3326 * XXX KDM this needs to change/go away. We need to move 3327 * to a preallocated pool of ctl_scsiio structures. 3328 */ 3329 io->io_hdr.nexus.targ_target.id = targ_target; 3330 io->io_hdr.nexus.targ_lun = targ_lun; 3331 } 3332 3333 return (io); 3334} 3335 3336void 3337ctl_kfree_io(union ctl_io *io) 3338{ 3339 free(io, M_CTL); 3340} 3341#endif /* unused */ 3342 3343/* 3344 * ctl_softc, pool_type, total_ctl_io are passed in. 3345 * npool is passed out. 3346 */ 3347int 3348ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3349 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3350{ 3351 uint32_t i; 3352 union ctl_io *cur_io, *next_io; 3353 struct ctl_io_pool *pool; 3354 int retval; 3355 3356 retval = 0; 3357 3358 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3359 M_NOWAIT | M_ZERO); 3360 if (pool == NULL) { 3361 retval = -ENOMEM; 3362 goto bailout; 3363 } 3364 3365 pool->type = pool_type; 3366 pool->ctl_softc = ctl_softc; 3367 3368 mtx_lock(&ctl_softc->pool_lock); 3369 pool->id = ctl_softc->cur_pool_id++; 3370 mtx_unlock(&ctl_softc->pool_lock); 3371 3372 pool->flags = CTL_POOL_FLAG_NONE; 3373 pool->refcount = 1; /* Reference for validity. */ 3374 STAILQ_INIT(&pool->free_queue); 3375 3376 /* 3377 * XXX KDM other options here: 3378 * - allocate a page at a time 3379 * - allocate one big chunk of memory. 3380 * Page allocation might work well, but would take a little more 3381 * tracking. 3382 */ 3383 for (i = 0; i < total_ctl_io; i++) { 3384 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3385 M_NOWAIT); 3386 if (cur_io == NULL) { 3387 retval = ENOMEM; 3388 break; 3389 } 3390 cur_io->io_hdr.pool = pool; 3391 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3392 pool->total_ctl_io++; 3393 pool->free_ctl_io++; 3394 } 3395 3396 if (retval != 0) { 3397 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3398 cur_io != NULL; cur_io = next_io) { 3399 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3400 links); 3401 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3402 ctl_io_hdr, links); 3403 free(cur_io, M_CTL); 3404 } 3405 3406 free(pool, M_CTL); 3407 goto bailout; 3408 } 3409 mtx_lock(&ctl_softc->pool_lock); 3410 ctl_softc->num_pools++; 3411 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3412 /* 3413 * Increment our usage count if this is an external consumer, so we 3414 * can't get unloaded until the external consumer (most likely a 3415 * FETD) unloads and frees his pool. 3416 * 3417 * XXX KDM will this increment the caller's module use count, or 3418 * mine? 3419 */ 3420#if 0 3421 if ((pool_type != CTL_POOL_EMERGENCY) 3422 && (pool_type != CTL_POOL_INTERNAL) 3423 && (pool_type != CTL_POOL_IOCTL) 3424 && (pool_type != CTL_POOL_4OTHERSC)) 3425 MOD_INC_USE_COUNT; 3426#endif 3427 3428 mtx_unlock(&ctl_softc->pool_lock); 3429 3430 *npool = pool; 3431 3432bailout: 3433 3434 return (retval); 3435} 3436 3437static int 3438ctl_pool_acquire(struct ctl_io_pool *pool) 3439{ 3440 3441 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3442 3443 if (pool->flags & CTL_POOL_FLAG_INVALID) 3444 return (-EINVAL); 3445 3446 pool->refcount++; 3447 3448 return (0); 3449} 3450 3451static void 3452ctl_pool_release(struct ctl_io_pool *pool) 3453{ 3454 struct ctl_softc *ctl_softc = pool->ctl_softc; 3455 union ctl_io *io; 3456 3457 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3458 3459 if (--pool->refcount != 0) 3460 return; 3461 3462 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3463 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3464 links); 3465 free(io, M_CTL); 3466 } 3467 3468 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3469 ctl_softc->num_pools--; 3470 3471 /* 3472 * XXX KDM will this decrement the caller's usage count or mine? 3473 */ 3474#if 0 3475 if ((pool->type != CTL_POOL_EMERGENCY) 3476 && (pool->type != CTL_POOL_INTERNAL) 3477 && (pool->type != CTL_POOL_IOCTL)) 3478 MOD_DEC_USE_COUNT; 3479#endif 3480 3481 free(pool, M_CTL); 3482} 3483 3484void 3485ctl_pool_free(struct ctl_io_pool *pool) 3486{ 3487 struct ctl_softc *ctl_softc; 3488 3489 if (pool == NULL) 3490 return; 3491 3492 ctl_softc = pool->ctl_softc; 3493 mtx_lock(&ctl_softc->pool_lock); 3494 pool->flags |= CTL_POOL_FLAG_INVALID; 3495 ctl_pool_release(pool); 3496 mtx_unlock(&ctl_softc->pool_lock); 3497} 3498 3499/* 3500 * This routine does not block (except for spinlocks of course). 3501 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3502 * possible. 3503 */ 3504union ctl_io * 3505ctl_alloc_io(void *pool_ref) 3506{ 3507 union ctl_io *io; 3508 struct ctl_softc *ctl_softc; 3509 struct ctl_io_pool *pool, *npool; 3510 struct ctl_io_pool *emergency_pool; 3511 3512 pool = (struct ctl_io_pool *)pool_ref; 3513 3514 if (pool == NULL) { 3515 printf("%s: pool is NULL\n", __func__); 3516 return (NULL); 3517 } 3518 3519 emergency_pool = NULL; 3520 3521 ctl_softc = pool->ctl_softc; 3522 3523 mtx_lock(&ctl_softc->pool_lock); 3524 /* 3525 * First, try to get the io structure from the user's pool. 3526 */ 3527 if (ctl_pool_acquire(pool) == 0) { 3528 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3529 if (io != NULL) { 3530 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3531 pool->total_allocated++; 3532 pool->free_ctl_io--; 3533 mtx_unlock(&ctl_softc->pool_lock); 3534 return (io); 3535 } else 3536 ctl_pool_release(pool); 3537 } 3538 /* 3539 * If he doesn't have any io structures left, search for an 3540 * emergency pool and grab one from there. 3541 */ 3542 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3543 if (npool->type != CTL_POOL_EMERGENCY) 3544 continue; 3545 3546 if (ctl_pool_acquire(npool) != 0) 3547 continue; 3548 3549 emergency_pool = npool; 3550 3551 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3552 if (io != NULL) { 3553 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3554 npool->total_allocated++; 3555 npool->free_ctl_io--; 3556 mtx_unlock(&ctl_softc->pool_lock); 3557 return (io); 3558 } else 3559 ctl_pool_release(npool); 3560 } 3561 3562 /* Drop the spinlock before we malloc */ 3563 mtx_unlock(&ctl_softc->pool_lock); 3564 3565 /* 3566 * The emergency pool (if it exists) didn't have one, so try an 3567 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3568 */ 3569 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3570 if (io != NULL) { 3571 /* 3572 * If the emergency pool exists but is empty, add this 3573 * ctl_io to its list when it gets freed. 3574 */ 3575 if (emergency_pool != NULL) { 3576 mtx_lock(&ctl_softc->pool_lock); 3577 if (ctl_pool_acquire(emergency_pool) == 0) { 3578 io->io_hdr.pool = emergency_pool; 3579 emergency_pool->total_ctl_io++; 3580 /* 3581 * Need to bump this, otherwise 3582 * total_allocated and total_freed won't 3583 * match when we no longer have anything 3584 * outstanding. 3585 */ 3586 emergency_pool->total_allocated++; 3587 } 3588 mtx_unlock(&ctl_softc->pool_lock); 3589 } else 3590 io->io_hdr.pool = NULL; 3591 } 3592 3593 return (io); 3594} 3595 3596void 3597ctl_free_io(union ctl_io *io) 3598{ 3599 if (io == NULL) 3600 return; 3601 3602 /* 3603 * If this ctl_io has a pool, return it to that pool. 3604 */ 3605 if (io->io_hdr.pool != NULL) { 3606 struct ctl_io_pool *pool; 3607#if 0 3608 struct ctl_softc *ctl_softc; 3609 union ctl_io *tmp_io; 3610 unsigned long xflags; 3611 int i; 3612 3613 ctl_softc = control_softc; 3614#endif 3615 3616 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3617 3618 mtx_lock(&pool->ctl_softc->pool_lock); 3619#if 0 3620 save_flags(xflags); 3621 3622 for (i = 0, tmp_io = (union ctl_io *)STAILQ_FIRST( 3623 &ctl_softc->task_queue); tmp_io != NULL; i++, 3624 tmp_io = (union ctl_io *)STAILQ_NEXT(&tmp_io->io_hdr, 3625 links)) { 3626 if (tmp_io == io) { 3627 printf("%s: %p is still on the task queue!\n", 3628 __func__, tmp_io); 3629 printf("%s: (%d): type %d " 3630 "msg %d cdb %x iptl: " 3631 "%d:%d:%d:%d tag 0x%04x " 3632 "flg %#lx\n", 3633 __func__, i, 3634 tmp_io->io_hdr.io_type, 3635 tmp_io->io_hdr.msg_type, 3636 tmp_io->scsiio.cdb[0], 3637 tmp_io->io_hdr.nexus.initid.id, 3638 tmp_io->io_hdr.nexus.targ_port, 3639 tmp_io->io_hdr.nexus.targ_target.id, 3640 tmp_io->io_hdr.nexus.targ_lun, 3641 (tmp_io->io_hdr.io_type == 3642 CTL_IO_TASK) ? 3643 tmp_io->taskio.tag_num : 3644 tmp_io->scsiio.tag_num, 3645 xflags); 3646 panic("I/O still on the task queue!"); 3647 } 3648 } 3649#endif 3650 io->io_hdr.io_type = 0xff; 3651 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3652 pool->total_freed++; 3653 pool->free_ctl_io++; 3654 ctl_pool_release(pool); 3655 mtx_unlock(&pool->ctl_softc->pool_lock); 3656 } else { 3657 /* 3658 * Otherwise, just free it. We probably malloced it and 3659 * the emergency pool wasn't available. 3660 */ 3661 free(io, M_CTL); 3662 } 3663 3664} 3665 3666void 3667ctl_zero_io(union ctl_io *io) 3668{ 3669 void *pool_ref; 3670 3671 if (io == NULL) 3672 return; 3673 3674 /* 3675 * May need to preserve linked list pointers at some point too. 3676 */ 3677 pool_ref = io->io_hdr.pool; 3678 3679 memset(io, 0, sizeof(*io)); 3680 3681 io->io_hdr.pool = pool_ref; 3682} 3683 3684/* 3685 * This routine is currently used for internal copies of ctl_ios that need 3686 * to persist for some reason after we've already returned status to the 3687 * FETD. (Thus the flag set.) 3688 * 3689 * XXX XXX 3690 * Note that this makes a blind copy of all fields in the ctl_io, except 3691 * for the pool reference. This includes any memory that has been 3692 * allocated! That memory will no longer be valid after done has been 3693 * called, so this would be VERY DANGEROUS for command that actually does 3694 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3695 * start and stop commands, which don't transfer any data, so this is not a 3696 * problem. If it is used for anything else, the caller would also need to 3697 * allocate data buffer space and this routine would need to be modified to 3698 * copy the data buffer(s) as well. 3699 */ 3700void 3701ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3702{ 3703 void *pool_ref; 3704 3705 if ((src == NULL) 3706 || (dest == NULL)) 3707 return; 3708 3709 /* 3710 * May need to preserve linked list pointers at some point too. 3711 */ 3712 pool_ref = dest->io_hdr.pool; 3713 3714 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3715 3716 dest->io_hdr.pool = pool_ref; 3717 /* 3718 * We need to know that this is an internal copy, and doesn't need 3719 * to get passed back to the FETD that allocated it. 3720 */ 3721 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3722} 3723 3724#ifdef NEEDTOPORT 3725static void 3726ctl_update_power_subpage(struct copan_power_subpage *page) 3727{ 3728 int num_luns, num_partitions, config_type; 3729 struct ctl_softc *softc; 3730 cs_BOOL_t aor_present, shelf_50pct_power; 3731 cs_raidset_personality_t rs_type; 3732 int max_active_luns; 3733 3734 softc = control_softc; 3735 3736 /* subtract out the processor LUN */ 3737 num_luns = softc->num_luns - 1; 3738 /* 3739 * Default to 7 LUNs active, which was the only number we allowed 3740 * in the past. 3741 */ 3742 max_active_luns = 7; 3743 3744 num_partitions = config_GetRsPartitionInfo(); 3745 config_type = config_GetConfigType(); 3746 shelf_50pct_power = config_GetShelfPowerMode(); 3747 aor_present = config_IsAorRsPresent(); 3748 3749 rs_type = ddb_GetRsRaidType(1); 3750 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3751 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3752 EPRINT(0, "Unsupported RS type %d!", rs_type); 3753 } 3754 3755 3756 page->total_luns = num_luns; 3757 3758 switch (config_type) { 3759 case 40: 3760 /* 3761 * In a 40 drive configuration, it doesn't matter what DC 3762 * cards we have, whether we have AOR enabled or not, 3763 * partitioning or not, or what type of RAIDset we have. 3764 * In that scenario, we can power up every LUN we present 3765 * to the user. 3766 */ 3767 max_active_luns = num_luns; 3768 3769 break; 3770 case 64: 3771 if (shelf_50pct_power == CS_FALSE) { 3772 /* 25% power */ 3773 if (aor_present == CS_TRUE) { 3774 if (rs_type == 3775 CS_RAIDSET_PERSONALITY_RAID5) { 3776 max_active_luns = 7; 3777 } else if (rs_type == 3778 CS_RAIDSET_PERSONALITY_RAID1){ 3779 max_active_luns = 14; 3780 } else { 3781 /* XXX KDM now what?? */ 3782 } 3783 } else { 3784 if (rs_type == 3785 CS_RAIDSET_PERSONALITY_RAID5) { 3786 max_active_luns = 8; 3787 } else if (rs_type == 3788 CS_RAIDSET_PERSONALITY_RAID1){ 3789 max_active_luns = 16; 3790 } else { 3791 /* XXX KDM now what?? */ 3792 } 3793 } 3794 } else { 3795 /* 50% power */ 3796 /* 3797 * With 50% power in a 64 drive configuration, we 3798 * can power all LUNs we present. 3799 */ 3800 max_active_luns = num_luns; 3801 } 3802 break; 3803 case 112: 3804 if (shelf_50pct_power == CS_FALSE) { 3805 /* 25% power */ 3806 if (aor_present == CS_TRUE) { 3807 if (rs_type == 3808 CS_RAIDSET_PERSONALITY_RAID5) { 3809 max_active_luns = 7; 3810 } else if (rs_type == 3811 CS_RAIDSET_PERSONALITY_RAID1){ 3812 max_active_luns = 14; 3813 } else { 3814 /* XXX KDM now what?? */ 3815 } 3816 } else { 3817 if (rs_type == 3818 CS_RAIDSET_PERSONALITY_RAID5) { 3819 max_active_luns = 8; 3820 } else if (rs_type == 3821 CS_RAIDSET_PERSONALITY_RAID1){ 3822 max_active_luns = 16; 3823 } else { 3824 /* XXX KDM now what?? */ 3825 } 3826 } 3827 } else { 3828 /* 50% power */ 3829 if (aor_present == CS_TRUE) { 3830 if (rs_type == 3831 CS_RAIDSET_PERSONALITY_RAID5) { 3832 max_active_luns = 14; 3833 } else if (rs_type == 3834 CS_RAIDSET_PERSONALITY_RAID1){ 3835 /* 3836 * We're assuming here that disk 3837 * caching is enabled, and so we're 3838 * able to power up half of each 3839 * LUN, and cache all writes. 3840 */ 3841 max_active_luns = num_luns; 3842 } else { 3843 /* XXX KDM now what?? */ 3844 } 3845 } else { 3846 if (rs_type == 3847 CS_RAIDSET_PERSONALITY_RAID5) { 3848 max_active_luns = 15; 3849 } else if (rs_type == 3850 CS_RAIDSET_PERSONALITY_RAID1){ 3851 max_active_luns = 30; 3852 } else { 3853 /* XXX KDM now what?? */ 3854 } 3855 } 3856 } 3857 break; 3858 default: 3859 /* 3860 * In this case, we have an unknown configuration, so we 3861 * just use the default from above. 3862 */ 3863 break; 3864 } 3865 3866 page->max_active_luns = max_active_luns; 3867#if 0 3868 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3869 page->total_luns, page->max_active_luns); 3870#endif 3871} 3872#endif /* NEEDTOPORT */ 3873 3874/* 3875 * This routine could be used in the future to load default and/or saved 3876 * mode page parameters for a particuar lun. 3877 */ 3878static int 3879ctl_init_page_index(struct ctl_lun *lun) 3880{ 3881 int i; 3882 struct ctl_page_index *page_index; 3883 struct ctl_softc *softc; 3884 3885 memcpy(&lun->mode_pages.index, page_index_template, 3886 sizeof(page_index_template)); 3887 3888 softc = lun->ctl_softc; 3889 3890 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3891 3892 page_index = &lun->mode_pages.index[i]; 3893 /* 3894 * If this is a disk-only mode page, there's no point in 3895 * setting it up. For some pages, we have to have some 3896 * basic information about the disk in order to calculate the 3897 * mode page data. 3898 */ 3899 if ((lun->be_lun->lun_type != T_DIRECT) 3900 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3901 continue; 3902 3903 switch (page_index->page_code & SMPH_PC_MASK) { 3904 case SMS_FORMAT_DEVICE_PAGE: { 3905 struct scsi_format_page *format_page; 3906 3907 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3908 panic("subpage is incorrect!"); 3909 3910 /* 3911 * Sectors per track are set above. Bytes per 3912 * sector need to be set here on a per-LUN basis. 3913 */ 3914 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3915 &format_page_default, 3916 sizeof(format_page_default)); 3917 memcpy(&lun->mode_pages.format_page[ 3918 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3919 sizeof(format_page_changeable)); 3920 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3921 &format_page_default, 3922 sizeof(format_page_default)); 3923 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3924 &format_page_default, 3925 sizeof(format_page_default)); 3926 3927 format_page = &lun->mode_pages.format_page[ 3928 CTL_PAGE_CURRENT]; 3929 scsi_ulto2b(lun->be_lun->blocksize, 3930 format_page->bytes_per_sector); 3931 3932 format_page = &lun->mode_pages.format_page[ 3933 CTL_PAGE_DEFAULT]; 3934 scsi_ulto2b(lun->be_lun->blocksize, 3935 format_page->bytes_per_sector); 3936 3937 format_page = &lun->mode_pages.format_page[ 3938 CTL_PAGE_SAVED]; 3939 scsi_ulto2b(lun->be_lun->blocksize, 3940 format_page->bytes_per_sector); 3941 3942 page_index->page_data = 3943 (uint8_t *)lun->mode_pages.format_page; 3944 break; 3945 } 3946 case SMS_RIGID_DISK_PAGE: { 3947 struct scsi_rigid_disk_page *rigid_disk_page; 3948 uint32_t sectors_per_cylinder; 3949 uint64_t cylinders; 3950#ifndef __XSCALE__ 3951 int shift; 3952#endif /* !__XSCALE__ */ 3953 3954 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3955 panic("invalid subpage value %d", 3956 page_index->subpage); 3957 3958 /* 3959 * Rotation rate and sectors per track are set 3960 * above. We calculate the cylinders here based on 3961 * capacity. Due to the number of heads and 3962 * sectors per track we're using, smaller arrays 3963 * may turn out to have 0 cylinders. Linux and 3964 * FreeBSD don't pay attention to these mode pages 3965 * to figure out capacity, but Solaris does. It 3966 * seems to deal with 0 cylinders just fine, and 3967 * works out a fake geometry based on the capacity. 3968 */ 3969 memcpy(&lun->mode_pages.rigid_disk_page[ 3970 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3971 sizeof(rigid_disk_page_default)); 3972 memcpy(&lun->mode_pages.rigid_disk_page[ 3973 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3974 sizeof(rigid_disk_page_changeable)); 3975 memcpy(&lun->mode_pages.rigid_disk_page[ 3976 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3977 sizeof(rigid_disk_page_default)); 3978 memcpy(&lun->mode_pages.rigid_disk_page[ 3979 CTL_PAGE_SAVED], &rigid_disk_page_default, 3980 sizeof(rigid_disk_page_default)); 3981 3982 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3983 CTL_DEFAULT_HEADS; 3984 3985 /* 3986 * The divide method here will be more accurate, 3987 * probably, but results in floating point being 3988 * used in the kernel on i386 (__udivdi3()). On the 3989 * XScale, though, __udivdi3() is implemented in 3990 * software. 3991 * 3992 * The shift method for cylinder calculation is 3993 * accurate if sectors_per_cylinder is a power of 3994 * 2. Otherwise it might be slightly off -- you 3995 * might have a bit of a truncation problem. 3996 */ 3997#ifdef __XSCALE__ 3998 cylinders = (lun->be_lun->maxlba + 1) / 3999 sectors_per_cylinder; 4000#else 4001 for (shift = 31; shift > 0; shift--) { 4002 if (sectors_per_cylinder & (1 << shift)) 4003 break; 4004 } 4005 cylinders = (lun->be_lun->maxlba + 1) >> shift; 4006#endif 4007 4008 /* 4009 * We've basically got 3 bytes, or 24 bits for the 4010 * cylinder size in the mode page. If we're over, 4011 * just round down to 2^24. 4012 */ 4013 if (cylinders > 0xffffff) 4014 cylinders = 0xffffff; 4015 4016 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4017 CTL_PAGE_CURRENT]; 4018 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4019 4020 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4021 CTL_PAGE_DEFAULT]; 4022 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4023 4024 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4025 CTL_PAGE_SAVED]; 4026 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4027 4028 page_index->page_data = 4029 (uint8_t *)lun->mode_pages.rigid_disk_page; 4030 break; 4031 } 4032 case SMS_CACHING_PAGE: { 4033 4034 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4035 panic("invalid subpage value %d", 4036 page_index->subpage); 4037 /* 4038 * Defaults should be okay here, no calculations 4039 * needed. 4040 */ 4041 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 4042 &caching_page_default, 4043 sizeof(caching_page_default)); 4044 memcpy(&lun->mode_pages.caching_page[ 4045 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4046 sizeof(caching_page_changeable)); 4047 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4048 &caching_page_default, 4049 sizeof(caching_page_default)); 4050 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4051 &caching_page_default, 4052 sizeof(caching_page_default)); 4053 page_index->page_data = 4054 (uint8_t *)lun->mode_pages.caching_page; 4055 break; 4056 } 4057 case SMS_CONTROL_MODE_PAGE: { 4058 4059 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4060 panic("invalid subpage value %d", 4061 page_index->subpage); 4062 4063 /* 4064 * Defaults should be okay here, no calculations 4065 * needed. 4066 */ 4067 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4068 &control_page_default, 4069 sizeof(control_page_default)); 4070 memcpy(&lun->mode_pages.control_page[ 4071 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4072 sizeof(control_page_changeable)); 4073 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4074 &control_page_default, 4075 sizeof(control_page_default)); 4076 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4077 &control_page_default, 4078 sizeof(control_page_default)); 4079 page_index->page_data = 4080 (uint8_t *)lun->mode_pages.control_page; 4081 break; 4082 4083 } 4084 case SMS_VENDOR_SPECIFIC_PAGE:{ 4085 switch (page_index->subpage) { 4086 case PWR_SUBPAGE_CODE: { 4087 struct copan_power_subpage *current_page, 4088 *saved_page; 4089 4090 memcpy(&lun->mode_pages.power_subpage[ 4091 CTL_PAGE_CURRENT], 4092 &power_page_default, 4093 sizeof(power_page_default)); 4094 memcpy(&lun->mode_pages.power_subpage[ 4095 CTL_PAGE_CHANGEABLE], 4096 &power_page_changeable, 4097 sizeof(power_page_changeable)); 4098 memcpy(&lun->mode_pages.power_subpage[ 4099 CTL_PAGE_DEFAULT], 4100 &power_page_default, 4101 sizeof(power_page_default)); 4102 memcpy(&lun->mode_pages.power_subpage[ 4103 CTL_PAGE_SAVED], 4104 &power_page_default, 4105 sizeof(power_page_default)); 4106 page_index->page_data = 4107 (uint8_t *)lun->mode_pages.power_subpage; 4108 4109 current_page = (struct copan_power_subpage *) 4110 (page_index->page_data + 4111 (page_index->page_len * 4112 CTL_PAGE_CURRENT)); 4113 saved_page = (struct copan_power_subpage *) 4114 (page_index->page_data + 4115 (page_index->page_len * 4116 CTL_PAGE_SAVED)); 4117 break; 4118 } 4119 case APS_SUBPAGE_CODE: { 4120 struct copan_aps_subpage *current_page, 4121 *saved_page; 4122 4123 // This gets set multiple times but 4124 // it should always be the same. It's 4125 // only done during init so who cares. 4126 index_to_aps_page = i; 4127 4128 memcpy(&lun->mode_pages.aps_subpage[ 4129 CTL_PAGE_CURRENT], 4130 &aps_page_default, 4131 sizeof(aps_page_default)); 4132 memcpy(&lun->mode_pages.aps_subpage[ 4133 CTL_PAGE_CHANGEABLE], 4134 &aps_page_changeable, 4135 sizeof(aps_page_changeable)); 4136 memcpy(&lun->mode_pages.aps_subpage[ 4137 CTL_PAGE_DEFAULT], 4138 &aps_page_default, 4139 sizeof(aps_page_default)); 4140 memcpy(&lun->mode_pages.aps_subpage[ 4141 CTL_PAGE_SAVED], 4142 &aps_page_default, 4143 sizeof(aps_page_default)); 4144 page_index->page_data = 4145 (uint8_t *)lun->mode_pages.aps_subpage; 4146 4147 current_page = (struct copan_aps_subpage *) 4148 (page_index->page_data + 4149 (page_index->page_len * 4150 CTL_PAGE_CURRENT)); 4151 saved_page = (struct copan_aps_subpage *) 4152 (page_index->page_data + 4153 (page_index->page_len * 4154 CTL_PAGE_SAVED)); 4155 break; 4156 } 4157 case DBGCNF_SUBPAGE_CODE: { 4158 struct copan_debugconf_subpage *current_page, 4159 *saved_page; 4160 4161 memcpy(&lun->mode_pages.debugconf_subpage[ 4162 CTL_PAGE_CURRENT], 4163 &debugconf_page_default, 4164 sizeof(debugconf_page_default)); 4165 memcpy(&lun->mode_pages.debugconf_subpage[ 4166 CTL_PAGE_CHANGEABLE], 4167 &debugconf_page_changeable, 4168 sizeof(debugconf_page_changeable)); 4169 memcpy(&lun->mode_pages.debugconf_subpage[ 4170 CTL_PAGE_DEFAULT], 4171 &debugconf_page_default, 4172 sizeof(debugconf_page_default)); 4173 memcpy(&lun->mode_pages.debugconf_subpage[ 4174 CTL_PAGE_SAVED], 4175 &debugconf_page_default, 4176 sizeof(debugconf_page_default)); 4177 page_index->page_data = 4178 (uint8_t *)lun->mode_pages.debugconf_subpage; 4179 4180 current_page = (struct copan_debugconf_subpage *) 4181 (page_index->page_data + 4182 (page_index->page_len * 4183 CTL_PAGE_CURRENT)); 4184 saved_page = (struct copan_debugconf_subpage *) 4185 (page_index->page_data + 4186 (page_index->page_len * 4187 CTL_PAGE_SAVED)); 4188 break; 4189 } 4190 default: 4191 panic("invalid subpage value %d", 4192 page_index->subpage); 4193 break; 4194 } 4195 break; 4196 } 4197 default: 4198 panic("invalid page value %d", 4199 page_index->page_code & SMPH_PC_MASK); 4200 break; 4201 } 4202 } 4203 4204 return (CTL_RETVAL_COMPLETE); 4205} 4206 4207/* 4208 * LUN allocation. 4209 * 4210 * Requirements: 4211 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4212 * wants us to allocate the LUN and he can block. 4213 * - ctl_softc is always set 4214 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4215 * 4216 * Returns 0 for success, non-zero (errno) for failure. 4217 */ 4218static int 4219ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4220 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4221{ 4222 struct ctl_lun *nlun, *lun; 4223 struct ctl_frontend *fe; 4224 int lun_number, i, lun_malloced; 4225 4226 if (be_lun == NULL) 4227 return (EINVAL); 4228 4229 /* 4230 * We currently only support Direct Access or Processor LUN types. 4231 */ 4232 switch (be_lun->lun_type) { 4233 case T_DIRECT: 4234 break; 4235 case T_PROCESSOR: 4236 break; 4237 case T_SEQUENTIAL: 4238 case T_CHANGER: 4239 default: 4240 be_lun->lun_config_status(be_lun->be_lun, 4241 CTL_LUN_CONFIG_FAILURE); 4242 break; 4243 } 4244 if (ctl_lun == NULL) { 4245 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4246 lun_malloced = 1; 4247 } else { 4248 lun_malloced = 0; 4249 lun = ctl_lun; 4250 } 4251 4252 memset(lun, 0, sizeof(*lun)); 4253 if (lun_malloced) 4254 lun->flags = CTL_LUN_MALLOCED; 4255 4256 mtx_lock(&ctl_softc->ctl_lock); 4257 /* 4258 * See if the caller requested a particular LUN number. If so, see 4259 * if it is available. Otherwise, allocate the first available LUN. 4260 */ 4261 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4262 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4263 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4264 mtx_unlock(&ctl_softc->ctl_lock); 4265 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4266 printf("ctl: requested LUN ID %d is higher " 4267 "than CTL_MAX_LUNS - 1 (%d)\n", 4268 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4269 } else { 4270 /* 4271 * XXX KDM return an error, or just assign 4272 * another LUN ID in this case?? 4273 */ 4274 printf("ctl: requested LUN ID %d is already " 4275 "in use\n", be_lun->req_lun_id); 4276 } 4277 if (lun->flags & CTL_LUN_MALLOCED) 4278 free(lun, M_CTL); 4279 be_lun->lun_config_status(be_lun->be_lun, 4280 CTL_LUN_CONFIG_FAILURE); 4281 return (ENOSPC); 4282 } 4283 lun_number = be_lun->req_lun_id; 4284 } else { 4285 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4286 if (lun_number == -1) { 4287 mtx_unlock(&ctl_softc->ctl_lock); 4288 printf("ctl: can't allocate LUN on target %ju, out of " 4289 "LUNs\n", (uintmax_t)target_id.id); 4290 if (lun->flags & CTL_LUN_MALLOCED) 4291 free(lun, M_CTL); 4292 be_lun->lun_config_status(be_lun->be_lun, 4293 CTL_LUN_CONFIG_FAILURE); 4294 return (ENOSPC); 4295 } 4296 } 4297 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4298 4299 lun->target = target_id; 4300 lun->lun = lun_number; 4301 lun->be_lun = be_lun; 4302 /* 4303 * The processor LUN is always enabled. Disk LUNs come on line 4304 * disabled, and must be enabled by the backend. 4305 */ 4306 lun->flags |= CTL_LUN_DISABLED; 4307 lun->backend = be_lun->be; 4308 be_lun->ctl_lun = lun; 4309 be_lun->lun_id = lun_number; 4310 atomic_add_int(&be_lun->be->num_luns, 1); 4311 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4312 lun->flags |= CTL_LUN_STOPPED; 4313 4314 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4315 lun->flags |= CTL_LUN_INOPERABLE; 4316 4317 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4318 lun->flags |= CTL_LUN_PRIMARY_SC; 4319 4320 lun->ctl_softc = ctl_softc; 4321 TAILQ_INIT(&lun->ooa_queue); 4322 TAILQ_INIT(&lun->blocked_queue); 4323 STAILQ_INIT(&lun->error_list); 4324 4325 /* 4326 * Initialize the mode page index. 4327 */ 4328 ctl_init_page_index(lun); 4329 4330 /* 4331 * Set the poweron UA for all initiators on this LUN only. 4332 */ 4333 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4334 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4335 4336 /* 4337 * Now, before we insert this lun on the lun list, set the lun 4338 * inventory changed UA for all other luns. 4339 */ 4340 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4341 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4342 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4343 } 4344 } 4345 4346 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4347 4348 ctl_softc->ctl_luns[lun_number] = lun; 4349 4350 ctl_softc->num_luns++; 4351 4352 /* Setup statistics gathering */ 4353 lun->stats.device_type = be_lun->lun_type; 4354 lun->stats.lun_number = lun_number; 4355 if (lun->stats.device_type == T_DIRECT) 4356 lun->stats.blocksize = be_lun->blocksize; 4357 else 4358 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4359 for (i = 0;i < CTL_MAX_PORTS;i++) 4360 lun->stats.ports[i].targ_port = i; 4361 4362 mtx_unlock(&ctl_softc->ctl_lock); 4363 4364 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4365 4366 /* 4367 * Run through each registered FETD and bring it online if it isn't 4368 * already. Enable the target ID if it hasn't been enabled, and 4369 * enable this particular LUN. 4370 */ 4371 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4372 int retval; 4373 4374 /* 4375 * XXX KDM this only works for ONE TARGET ID. We'll need 4376 * to do things differently if we go to a multiple target 4377 * ID scheme. 4378 */ 4379 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4380 4381 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4382 if (retval != 0) { 4383 printf("ctl_alloc_lun: FETD %s port %d " 4384 "returned error %d for targ_enable on " 4385 "target %ju\n", fe->port_name, 4386 fe->targ_port, retval, 4387 (uintmax_t)target_id.id); 4388 } else 4389 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4390 } 4391 4392 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4393 if (retval != 0) { 4394 printf("ctl_alloc_lun: FETD %s port %d returned error " 4395 "%d for lun_enable on target %ju lun %d\n", 4396 fe->port_name, fe->targ_port, retval, 4397 (uintmax_t)target_id.id, lun_number); 4398 } else 4399 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4400 } 4401 return (0); 4402} 4403 4404/* 4405 * Delete a LUN. 4406 * Assumptions: 4407 * - LUN has already been marked invalid and any pending I/O has been taken 4408 * care of. 4409 */ 4410static int 4411ctl_free_lun(struct ctl_lun *lun) 4412{ 4413 struct ctl_softc *softc; 4414#if 0 4415 struct ctl_frontend *fe; 4416#endif 4417 struct ctl_lun *nlun; 4418 union ctl_io *io, *next_io; 4419 int i; 4420 4421 softc = lun->ctl_softc; 4422 4423 mtx_assert(&softc->ctl_lock, MA_OWNED); 4424 4425 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4426 4427 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4428 4429 softc->ctl_luns[lun->lun] = NULL; 4430 4431 if (TAILQ_FIRST(&lun->ooa_queue) != NULL) { 4432 printf("ctl_free_lun: aieee!! freeing a LUN with " 4433 "outstanding I/O!!\n"); 4434 } 4435 4436 /* 4437 * If we have anything pending on the RtR queue, remove it. 4438 */ 4439 for (io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); io != NULL; 4440 io = next_io) { 4441 uint32_t targ_lun; 4442 4443 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 4444 targ_lun = io->io_hdr.nexus.targ_lun; 4445 if (io->io_hdr.nexus.lun_map_fn != NULL) 4446 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 4447 if ((io->io_hdr.nexus.targ_target.id == lun->target.id) 4448 && (targ_lun == lun->lun)) 4449 STAILQ_REMOVE(&softc->rtr_queue, &io->io_hdr, 4450 ctl_io_hdr, links); 4451 } 4452 4453 /* 4454 * Then remove everything from the blocked queue. 4455 */ 4456 for (io = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); io != NULL; 4457 io = next_io) { 4458 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr,blocked_links); 4459 TAILQ_REMOVE(&lun->blocked_queue, &io->io_hdr, blocked_links); 4460 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 4461 } 4462 4463 /* 4464 * Now clear out the OOA queue, and free all the I/O. 4465 * XXX KDM should we notify the FETD here? We probably need to 4466 * quiesce the LUN before deleting it. 4467 */ 4468 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); io != NULL; 4469 io = next_io) { 4470 next_io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, ooa_links); 4471 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 4472 ctl_free_io(io); 4473 } 4474 4475 softc->num_luns--; 4476 4477 /* 4478 * XXX KDM this scheme only works for a single target/multiple LUN 4479 * setup. It needs to be revamped for a multiple target scheme. 4480 * 4481 * XXX KDM this results in fe->lun_disable() getting called twice, 4482 * once when ctl_disable_lun() is called, and a second time here. 4483 * We really need to re-think the LUN disable semantics. There 4484 * should probably be several steps/levels to LUN removal: 4485 * - disable 4486 * - invalidate 4487 * - free 4488 * 4489 * Right now we only have a disable method when communicating to 4490 * the front end ports, at least for individual LUNs. 4491 */ 4492#if 0 4493 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4494 int retval; 4495 4496 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4497 lun->lun); 4498 if (retval != 0) { 4499 printf("ctl_free_lun: FETD %s port %d returned error " 4500 "%d for lun_disable on target %ju lun %jd\n", 4501 fe->port_name, fe->targ_port, retval, 4502 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4503 } 4504 4505 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4506 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4507 4508 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4509 if (retval != 0) { 4510 printf("ctl_free_lun: FETD %s port %d " 4511 "returned error %d for targ_disable on " 4512 "target %ju\n", fe->port_name, 4513 fe->targ_port, retval, 4514 (uintmax_t)lun->target.id); 4515 } else 4516 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4517 4518 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4519 continue; 4520 4521#if 0 4522 fe->port_offline(fe->onoff_arg); 4523 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4524#endif 4525 } 4526 } 4527#endif 4528 4529 /* 4530 * Tell the backend to free resources, if this LUN has a backend. 4531 */ 4532 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4533 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4534 4535 if (lun->flags & CTL_LUN_MALLOCED) 4536 free(lun, M_CTL); 4537 4538 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4539 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4540 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4541 } 4542 } 4543 4544 return (0); 4545} 4546 4547static void 4548ctl_create_lun(struct ctl_be_lun *be_lun) 4549{ 4550 struct ctl_softc *ctl_softc; 4551 4552 ctl_softc = control_softc; 4553 4554 /* 4555 * ctl_alloc_lun() should handle all potential failure cases. 4556 */ 4557 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4558} 4559 4560int 4561ctl_add_lun(struct ctl_be_lun *be_lun) 4562{ 4563 struct ctl_softc *ctl_softc; 4564 4565 ctl_softc = control_softc; 4566 4567 mtx_lock(&ctl_softc->ctl_lock); 4568 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4569 mtx_unlock(&ctl_softc->ctl_lock); 4570 4571 ctl_wakeup_thread(); 4572 4573 return (0); 4574} 4575 4576int 4577ctl_enable_lun(struct ctl_be_lun *be_lun) 4578{ 4579 struct ctl_softc *ctl_softc; 4580 struct ctl_frontend *fe, *nfe; 4581 struct ctl_lun *lun; 4582 int retval; 4583 4584 ctl_softc = control_softc; 4585 4586 lun = (struct ctl_lun *)be_lun->ctl_lun; 4587 4588 mtx_lock(&ctl_softc->ctl_lock); 4589 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4590 /* 4591 * eh? Why did we get called if the LUN is already 4592 * enabled? 4593 */ 4594 mtx_unlock(&ctl_softc->ctl_lock); 4595 return (0); 4596 } 4597 lun->flags &= ~CTL_LUN_DISABLED; 4598 4599 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4600 nfe = STAILQ_NEXT(fe, links); 4601 4602 /* 4603 * Drop the lock while we call the FETD's enable routine. 4604 * This can lead to a callback into CTL (at least in the 4605 * case of the internal initiator frontend. 4606 */ 4607 mtx_unlock(&ctl_softc->ctl_lock); 4608 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4609 mtx_lock(&ctl_softc->ctl_lock); 4610 if (retval != 0) { 4611 printf("%s: FETD %s port %d returned error " 4612 "%d for lun_enable on target %ju lun %jd\n", 4613 __func__, fe->port_name, fe->targ_port, retval, 4614 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4615 } 4616#if 0 4617 else { 4618 /* NOTE: TODO: why does lun enable affect port status? */ 4619 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4620 } 4621#endif 4622 } 4623 4624 mtx_unlock(&ctl_softc->ctl_lock); 4625 4626 return (0); 4627} 4628 4629int 4630ctl_disable_lun(struct ctl_be_lun *be_lun) 4631{ 4632 struct ctl_softc *ctl_softc; 4633 struct ctl_frontend *fe; 4634 struct ctl_lun *lun; 4635 int retval; 4636 4637 ctl_softc = control_softc; 4638 4639 lun = (struct ctl_lun *)be_lun->ctl_lun; 4640 4641 mtx_lock(&ctl_softc->ctl_lock); 4642 4643 if (lun->flags & CTL_LUN_DISABLED) { 4644 mtx_unlock(&ctl_softc->ctl_lock); 4645 return (0); 4646 } 4647 lun->flags |= CTL_LUN_DISABLED; 4648 4649 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4650 mtx_unlock(&ctl_softc->ctl_lock); 4651 /* 4652 * Drop the lock before we call the frontend's disable 4653 * routine, to avoid lock order reversals. 4654 * 4655 * XXX KDM what happens if the frontend list changes while 4656 * we're traversing it? It's unlikely, but should be handled. 4657 */ 4658 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4659 lun->lun); 4660 mtx_lock(&ctl_softc->ctl_lock); 4661 if (retval != 0) { 4662 printf("ctl_alloc_lun: FETD %s port %d returned error " 4663 "%d for lun_disable on target %ju lun %jd\n", 4664 fe->port_name, fe->targ_port, retval, 4665 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4666 } 4667 } 4668 4669 mtx_unlock(&ctl_softc->ctl_lock); 4670 4671 return (0); 4672} 4673 4674int 4675ctl_start_lun(struct ctl_be_lun *be_lun) 4676{ 4677 struct ctl_softc *ctl_softc; 4678 struct ctl_lun *lun; 4679 4680 ctl_softc = control_softc; 4681 4682 lun = (struct ctl_lun *)be_lun->ctl_lun; 4683 4684 mtx_lock(&ctl_softc->ctl_lock); 4685 lun->flags &= ~CTL_LUN_STOPPED; 4686 mtx_unlock(&ctl_softc->ctl_lock); 4687 4688 return (0); 4689} 4690 4691int 4692ctl_stop_lun(struct ctl_be_lun *be_lun) 4693{ 4694 struct ctl_softc *ctl_softc; 4695 struct ctl_lun *lun; 4696 4697 ctl_softc = control_softc; 4698 4699 lun = (struct ctl_lun *)be_lun->ctl_lun; 4700 4701 mtx_lock(&ctl_softc->ctl_lock); 4702 lun->flags |= CTL_LUN_STOPPED; 4703 mtx_unlock(&ctl_softc->ctl_lock); 4704 4705 return (0); 4706} 4707 4708int 4709ctl_lun_offline(struct ctl_be_lun *be_lun) 4710{ 4711 struct ctl_softc *ctl_softc; 4712 struct ctl_lun *lun; 4713 4714 ctl_softc = control_softc; 4715 4716 lun = (struct ctl_lun *)be_lun->ctl_lun; 4717 4718 mtx_lock(&ctl_softc->ctl_lock); 4719 lun->flags |= CTL_LUN_OFFLINE; 4720 mtx_unlock(&ctl_softc->ctl_lock); 4721 4722 return (0); 4723} 4724 4725int 4726ctl_lun_online(struct ctl_be_lun *be_lun) 4727{ 4728 struct ctl_softc *ctl_softc; 4729 struct ctl_lun *lun; 4730 4731 ctl_softc = control_softc; 4732 4733 lun = (struct ctl_lun *)be_lun->ctl_lun; 4734 4735 mtx_lock(&ctl_softc->ctl_lock); 4736 lun->flags &= ~CTL_LUN_OFFLINE; 4737 mtx_unlock(&ctl_softc->ctl_lock); 4738 4739 return (0); 4740} 4741 4742int 4743ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4744{ 4745 struct ctl_softc *ctl_softc; 4746 struct ctl_lun *lun; 4747 4748 ctl_softc = control_softc; 4749 4750 lun = (struct ctl_lun *)be_lun->ctl_lun; 4751 4752 mtx_lock(&ctl_softc->ctl_lock); 4753 4754 /* 4755 * The LUN needs to be disabled before it can be marked invalid. 4756 */ 4757 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4758 mtx_unlock(&ctl_softc->ctl_lock); 4759 return (-1); 4760 } 4761 /* 4762 * Mark the LUN invalid. 4763 */ 4764 lun->flags |= CTL_LUN_INVALID; 4765 4766 /* 4767 * If there is nothing in the OOA queue, go ahead and free the LUN. 4768 * If we have something in the OOA queue, we'll free it when the 4769 * last I/O completes. 4770 */ 4771 if (TAILQ_FIRST(&lun->ooa_queue) == NULL) 4772 ctl_free_lun(lun); 4773 mtx_unlock(&ctl_softc->ctl_lock); 4774 4775 return (0); 4776} 4777 4778int 4779ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4780{ 4781 struct ctl_softc *ctl_softc; 4782 struct ctl_lun *lun; 4783 4784 ctl_softc = control_softc; 4785 lun = (struct ctl_lun *)be_lun->ctl_lun; 4786 4787 mtx_lock(&ctl_softc->ctl_lock); 4788 lun->flags |= CTL_LUN_INOPERABLE; 4789 mtx_unlock(&ctl_softc->ctl_lock); 4790 4791 return (0); 4792} 4793 4794int 4795ctl_lun_operable(struct ctl_be_lun *be_lun) 4796{ 4797 struct ctl_softc *ctl_softc; 4798 struct ctl_lun *lun; 4799 4800 ctl_softc = control_softc; 4801 lun = (struct ctl_lun *)be_lun->ctl_lun; 4802 4803 mtx_lock(&ctl_softc->ctl_lock); 4804 lun->flags &= ~CTL_LUN_INOPERABLE; 4805 mtx_unlock(&ctl_softc->ctl_lock); 4806 4807 return (0); 4808} 4809 4810int 4811ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4812 int lock) 4813{ 4814 struct ctl_softc *softc; 4815 struct ctl_lun *lun; 4816 struct copan_aps_subpage *current_sp; 4817 struct ctl_page_index *page_index; 4818 int i; 4819 4820 softc = control_softc; 4821 4822 mtx_lock(&softc->ctl_lock); 4823 4824 lun = (struct ctl_lun *)be_lun->ctl_lun; 4825 4826 page_index = NULL; 4827 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4828 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4829 APS_PAGE_CODE) 4830 continue; 4831 4832 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4833 continue; 4834 page_index = &lun->mode_pages.index[i]; 4835 } 4836 4837 if (page_index == NULL) { 4838 mtx_unlock(&softc->ctl_lock); 4839 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4840 (uintmax_t)lun->lun); 4841 return (1); 4842 } 4843#if 0 4844 if ((softc->aps_locked_lun != 0) 4845 && (softc->aps_locked_lun != lun->lun)) { 4846 printf("%s: attempt to lock LUN %llu when %llu is already " 4847 "locked\n"); 4848 mtx_unlock(&softc->ctl_lock); 4849 return (1); 4850 } 4851#endif 4852 4853 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4854 (page_index->page_len * CTL_PAGE_CURRENT)); 4855 4856 if (lock != 0) { 4857 current_sp->lock_active = APS_LOCK_ACTIVE; 4858 softc->aps_locked_lun = lun->lun; 4859 } else { 4860 current_sp->lock_active = 0; 4861 softc->aps_locked_lun = 0; 4862 } 4863 4864 4865 /* 4866 * If we're in HA mode, try to send the lock message to the other 4867 * side. 4868 */ 4869 if (ctl_is_single == 0) { 4870 int isc_retval; 4871 union ctl_ha_msg lock_msg; 4872 4873 lock_msg.hdr.nexus = *nexus; 4874 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4875 if (lock != 0) 4876 lock_msg.aps.lock_flag = 1; 4877 else 4878 lock_msg.aps.lock_flag = 0; 4879 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4880 sizeof(lock_msg), 0); 4881 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4882 printf("%s: APS (lock=%d) error returned from " 4883 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4884 mtx_unlock(&softc->ctl_lock); 4885 return (1); 4886 } 4887 } 4888 4889 mtx_unlock(&softc->ctl_lock); 4890 4891 return (0); 4892} 4893 4894void 4895ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4896{ 4897 struct ctl_lun *lun; 4898 struct ctl_softc *softc; 4899 int i; 4900 4901 softc = control_softc; 4902 4903 mtx_lock(&softc->ctl_lock); 4904 4905 lun = (struct ctl_lun *)be_lun->ctl_lun; 4906 4907 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4908 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4909 4910 mtx_unlock(&softc->ctl_lock); 4911} 4912 4913/* 4914 * Backend "memory move is complete" callback for requests that never 4915 * make it down to say RAIDCore's configuration code. 4916 */ 4917int 4918ctl_config_move_done(union ctl_io *io) 4919{ 4920 int retval; 4921 4922 retval = CTL_RETVAL_COMPLETE; 4923 4924 4925 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4926 /* 4927 * XXX KDM this shouldn't happen, but what if it does? 4928 */ 4929 if (io->io_hdr.io_type != CTL_IO_SCSI) 4930 panic("I/O type isn't CTL_IO_SCSI!"); 4931 4932 if ((io->io_hdr.port_status == 0) 4933 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4934 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4935 io->io_hdr.status = CTL_SUCCESS; 4936 else if ((io->io_hdr.port_status != 0) 4937 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4938 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4939 /* 4940 * For hardware error sense keys, the sense key 4941 * specific value is defined to be a retry count, 4942 * but we use it to pass back an internal FETD 4943 * error code. XXX KDM Hopefully the FETD is only 4944 * using 16 bits for an error code, since that's 4945 * all the space we have in the sks field. 4946 */ 4947 ctl_set_internal_failure(&io->scsiio, 4948 /*sks_valid*/ 1, 4949 /*retry_count*/ 4950 io->io_hdr.port_status); 4951 free(io->scsiio.kern_data_ptr, M_CTL); 4952 ctl_done(io); 4953 goto bailout; 4954 } 4955 4956 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4957 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4958 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4959 /* 4960 * XXX KDM just assuming a single pointer here, and not a 4961 * S/G list. If we start using S/G lists for config data, 4962 * we'll need to know how to clean them up here as well. 4963 */ 4964 free(io->scsiio.kern_data_ptr, M_CTL); 4965 /* Hopefully the user has already set the status... */ 4966 ctl_done(io); 4967 } else { 4968 /* 4969 * XXX KDM now we need to continue data movement. Some 4970 * options: 4971 * - call ctl_scsiio() again? We don't do this for data 4972 * writes, because for those at least we know ahead of 4973 * time where the write will go and how long it is. For 4974 * config writes, though, that information is largely 4975 * contained within the write itself, thus we need to 4976 * parse out the data again. 4977 * 4978 * - Call some other function once the data is in? 4979 */ 4980 4981 /* 4982 * XXX KDM call ctl_scsiio() again for now, and check flag 4983 * bits to see whether we're allocated or not. 4984 */ 4985 retval = ctl_scsiio(&io->scsiio); 4986 } 4987bailout: 4988 return (retval); 4989} 4990 4991/* 4992 * This gets called by a backend driver when it is done with a 4993 * data_submit method. 4994 */ 4995void 4996ctl_data_submit_done(union ctl_io *io) 4997{ 4998 /* 4999 * If the IO_CONT flag is set, we need to call the supplied 5000 * function to continue processing the I/O, instead of completing 5001 * the I/O just yet. 5002 * 5003 * If there is an error, though, we don't want to keep processing. 5004 * Instead, just send status back to the initiator. 5005 */ 5006 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) && 5007 (io->io_hdr.flags & CTL_FLAG_ABORT) == 0 && 5008 ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 5009 (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 5010 io->scsiio.io_cont(io); 5011 return; 5012 } 5013 ctl_done(io); 5014} 5015 5016/* 5017 * This gets called by a backend driver when it is done with a 5018 * configuration write. 5019 */ 5020void 5021ctl_config_write_done(union ctl_io *io) 5022{ 5023 /* 5024 * If the IO_CONT flag is set, we need to call the supplied 5025 * function to continue processing the I/O, instead of completing 5026 * the I/O just yet. 5027 * 5028 * If there is an error, though, we don't want to keep processing. 5029 * Instead, just send status back to the initiator. 5030 */ 5031 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5032 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5033 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5034 io->scsiio.io_cont(io); 5035 return; 5036 } 5037 /* 5038 * Since a configuration write can be done for commands that actually 5039 * have data allocated, like write buffer, and commands that have 5040 * no data, like start/stop unit, we need to check here. 5041 */ 5042 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5043 free(io->scsiio.kern_data_ptr, M_CTL); 5044 ctl_done(io); 5045} 5046 5047/* 5048 * SCSI release command. 5049 */ 5050int 5051ctl_scsi_release(struct ctl_scsiio *ctsio) 5052{ 5053 int length, longid, thirdparty_id, resv_id; 5054 struct ctl_softc *ctl_softc; 5055 struct ctl_lun *lun; 5056 5057 length = 0; 5058 resv_id = 0; 5059 5060 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5061 5062 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5063 ctl_softc = control_softc; 5064 5065 switch (ctsio->cdb[0]) { 5066 case RELEASE: { 5067 struct scsi_release *cdb; 5068 5069 cdb = (struct scsi_release *)ctsio->cdb; 5070 if ((cdb->byte2 & 0x1f) != 0) { 5071 ctl_set_invalid_field(ctsio, 5072 /*sks_valid*/ 1, 5073 /*command*/ 1, 5074 /*field*/ 1, 5075 /*bit_valid*/ 0, 5076 /*bit*/ 0); 5077 ctl_done((union ctl_io *)ctsio); 5078 return (CTL_RETVAL_COMPLETE); 5079 } 5080 break; 5081 } 5082 case RELEASE_10: { 5083 struct scsi_release_10 *cdb; 5084 5085 cdb = (struct scsi_release_10 *)ctsio->cdb; 5086 5087 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5088 ctl_set_invalid_field(ctsio, 5089 /*sks_valid*/ 1, 5090 /*command*/ 1, 5091 /*field*/ 1, 5092 /*bit_valid*/ 1, 5093 /*bit*/ 0); 5094 ctl_done((union ctl_io *)ctsio); 5095 return (CTL_RETVAL_COMPLETE); 5096 5097 } 5098 5099 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5100 ctl_set_invalid_field(ctsio, 5101 /*sks_valid*/ 1, 5102 /*command*/ 1, 5103 /*field*/ 1, 5104 /*bit_valid*/ 1, 5105 /*bit*/ 4); 5106 ctl_done((union ctl_io *)ctsio); 5107 return (CTL_RETVAL_COMPLETE); 5108 } 5109 5110 if (cdb->byte2 & SR10_LONGID) 5111 longid = 1; 5112 else 5113 thirdparty_id = cdb->thirdparty_id; 5114 5115 resv_id = cdb->resv_id; 5116 length = scsi_2btoul(cdb->length); 5117 break; 5118 } 5119 } 5120 5121 5122 /* 5123 * XXX KDM right now, we only support LUN reservation. We don't 5124 * support 3rd party reservations, or extent reservations, which 5125 * might actually need the parameter list. If we've gotten this 5126 * far, we've got a LUN reservation. Anything else got kicked out 5127 * above. So, according to SPC, ignore the length. 5128 */ 5129 length = 0; 5130 5131 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5132 && (length > 0)) { 5133 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5134 ctsio->kern_data_len = length; 5135 ctsio->kern_total_len = length; 5136 ctsio->kern_data_resid = 0; 5137 ctsio->kern_rel_offset = 0; 5138 ctsio->kern_sg_entries = 0; 5139 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5140 ctsio->be_move_done = ctl_config_move_done; 5141 ctl_datamove((union ctl_io *)ctsio); 5142 5143 return (CTL_RETVAL_COMPLETE); 5144 } 5145 5146 if (length > 0) 5147 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5148 5149 mtx_lock(&ctl_softc->ctl_lock); 5150 5151 /* 5152 * According to SPC, it is not an error for an intiator to attempt 5153 * to release a reservation on a LUN that isn't reserved, or that 5154 * is reserved by another initiator. The reservation can only be 5155 * released, though, by the initiator who made it or by one of 5156 * several reset type events. 5157 */ 5158 if (lun->flags & CTL_LUN_RESERVED) { 5159 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5160 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5161 && (ctsio->io_hdr.nexus.targ_target.id == 5162 lun->rsv_nexus.targ_target.id)) { 5163 lun->flags &= ~CTL_LUN_RESERVED; 5164 } 5165 } 5166 5167 ctsio->scsi_status = SCSI_STATUS_OK; 5168 ctsio->io_hdr.status = CTL_SUCCESS; 5169 5170 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5171 free(ctsio->kern_data_ptr, M_CTL); 5172 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5173 } 5174 5175 mtx_unlock(&ctl_softc->ctl_lock); 5176 5177 ctl_done((union ctl_io *)ctsio); 5178 return (CTL_RETVAL_COMPLETE); 5179} 5180 5181int 5182ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5183{ 5184 int extent, thirdparty, longid; 5185 int resv_id, length; 5186 uint64_t thirdparty_id; 5187 struct ctl_softc *ctl_softc; 5188 struct ctl_lun *lun; 5189 5190 extent = 0; 5191 thirdparty = 0; 5192 longid = 0; 5193 resv_id = 0; 5194 length = 0; 5195 thirdparty_id = 0; 5196 5197 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5198 5199 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5200 ctl_softc = control_softc; 5201 5202 switch (ctsio->cdb[0]) { 5203 case RESERVE: { 5204 struct scsi_reserve *cdb; 5205 5206 cdb = (struct scsi_reserve *)ctsio->cdb; 5207 if ((cdb->byte2 & 0x1f) != 0) { 5208 ctl_set_invalid_field(ctsio, 5209 /*sks_valid*/ 1, 5210 /*command*/ 1, 5211 /*field*/ 1, 5212 /*bit_valid*/ 0, 5213 /*bit*/ 0); 5214 ctl_done((union ctl_io *)ctsio); 5215 return (CTL_RETVAL_COMPLETE); 5216 } 5217 resv_id = cdb->resv_id; 5218 length = scsi_2btoul(cdb->length); 5219 break; 5220 } 5221 case RESERVE_10: { 5222 struct scsi_reserve_10 *cdb; 5223 5224 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5225 5226 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5227 ctl_set_invalid_field(ctsio, 5228 /*sks_valid*/ 1, 5229 /*command*/ 1, 5230 /*field*/ 1, 5231 /*bit_valid*/ 1, 5232 /*bit*/ 0); 5233 ctl_done((union ctl_io *)ctsio); 5234 return (CTL_RETVAL_COMPLETE); 5235 } 5236 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5237 ctl_set_invalid_field(ctsio, 5238 /*sks_valid*/ 1, 5239 /*command*/ 1, 5240 /*field*/ 1, 5241 /*bit_valid*/ 1, 5242 /*bit*/ 4); 5243 ctl_done((union ctl_io *)ctsio); 5244 return (CTL_RETVAL_COMPLETE); 5245 } 5246 if (cdb->byte2 & SR10_LONGID) 5247 longid = 1; 5248 else 5249 thirdparty_id = cdb->thirdparty_id; 5250 5251 resv_id = cdb->resv_id; 5252 length = scsi_2btoul(cdb->length); 5253 break; 5254 } 5255 } 5256 5257 /* 5258 * XXX KDM right now, we only support LUN reservation. We don't 5259 * support 3rd party reservations, or extent reservations, which 5260 * might actually need the parameter list. If we've gotten this 5261 * far, we've got a LUN reservation. Anything else got kicked out 5262 * above. So, according to SPC, ignore the length. 5263 */ 5264 length = 0; 5265 5266 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5267 && (length > 0)) { 5268 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5269 ctsio->kern_data_len = length; 5270 ctsio->kern_total_len = length; 5271 ctsio->kern_data_resid = 0; 5272 ctsio->kern_rel_offset = 0; 5273 ctsio->kern_sg_entries = 0; 5274 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5275 ctsio->be_move_done = ctl_config_move_done; 5276 ctl_datamove((union ctl_io *)ctsio); 5277 5278 return (CTL_RETVAL_COMPLETE); 5279 } 5280 5281 if (length > 0) 5282 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5283 5284 mtx_lock(&ctl_softc->ctl_lock); 5285 if (lun->flags & CTL_LUN_RESERVED) { 5286 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5287 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5288 || (ctsio->io_hdr.nexus.targ_target.id != 5289 lun->rsv_nexus.targ_target.id)) { 5290 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5291 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5292 goto bailout; 5293 } 5294 } 5295 5296 lun->flags |= CTL_LUN_RESERVED; 5297 lun->rsv_nexus = ctsio->io_hdr.nexus; 5298 5299 ctsio->scsi_status = SCSI_STATUS_OK; 5300 ctsio->io_hdr.status = CTL_SUCCESS; 5301 5302bailout: 5303 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5304 free(ctsio->kern_data_ptr, M_CTL); 5305 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5306 } 5307 5308 mtx_unlock(&ctl_softc->ctl_lock); 5309 5310 ctl_done((union ctl_io *)ctsio); 5311 return (CTL_RETVAL_COMPLETE); 5312} 5313 5314int 5315ctl_start_stop(struct ctl_scsiio *ctsio) 5316{ 5317 struct scsi_start_stop_unit *cdb; 5318 struct ctl_lun *lun; 5319 struct ctl_softc *ctl_softc; 5320 int retval; 5321 5322 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5323 5324 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5325 ctl_softc = control_softc; 5326 retval = 0; 5327 5328 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5329 5330 /* 5331 * XXX KDM 5332 * We don't support the immediate bit on a stop unit. In order to 5333 * do that, we would need to code up a way to know that a stop is 5334 * pending, and hold off any new commands until it completes, one 5335 * way or another. Then we could accept or reject those commands 5336 * depending on its status. We would almost need to do the reverse 5337 * of what we do below for an immediate start -- return the copy of 5338 * the ctl_io to the FETD with status to send to the host (and to 5339 * free the copy!) and then free the original I/O once the stop 5340 * actually completes. That way, the OOA queue mechanism can work 5341 * to block commands that shouldn't proceed. Another alternative 5342 * would be to put the copy in the queue in place of the original, 5343 * and return the original back to the caller. That could be 5344 * slightly safer.. 5345 */ 5346 if ((cdb->byte2 & SSS_IMMED) 5347 && ((cdb->how & SSS_START) == 0)) { 5348 ctl_set_invalid_field(ctsio, 5349 /*sks_valid*/ 1, 5350 /*command*/ 1, 5351 /*field*/ 1, 5352 /*bit_valid*/ 1, 5353 /*bit*/ 0); 5354 ctl_done((union ctl_io *)ctsio); 5355 return (CTL_RETVAL_COMPLETE); 5356 } 5357 5358 /* 5359 * We don't support the power conditions field. We need to check 5360 * this prior to checking the load/eject and start/stop bits. 5361 */ 5362 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5363 ctl_set_invalid_field(ctsio, 5364 /*sks_valid*/ 1, 5365 /*command*/ 1, 5366 /*field*/ 4, 5367 /*bit_valid*/ 1, 5368 /*bit*/ 4); 5369 ctl_done((union ctl_io *)ctsio); 5370 return (CTL_RETVAL_COMPLETE); 5371 } 5372 5373 /* 5374 * Media isn't removable, so we can't load or eject it. 5375 */ 5376 if ((cdb->how & SSS_LOEJ) != 0) { 5377 ctl_set_invalid_field(ctsio, 5378 /*sks_valid*/ 1, 5379 /*command*/ 1, 5380 /*field*/ 4, 5381 /*bit_valid*/ 1, 5382 /*bit*/ 1); 5383 ctl_done((union ctl_io *)ctsio); 5384 return (CTL_RETVAL_COMPLETE); 5385 } 5386 5387 if ((lun->flags & CTL_LUN_PR_RESERVED) 5388 && ((cdb->how & SSS_START)==0)) { 5389 uint32_t residx; 5390 5391 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5392 if (!lun->per_res[residx].registered 5393 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5394 5395 ctl_set_reservation_conflict(ctsio); 5396 ctl_done((union ctl_io *)ctsio); 5397 return (CTL_RETVAL_COMPLETE); 5398 } 5399 } 5400 5401 /* 5402 * If there is no backend on this device, we can't start or stop 5403 * it. In theory we shouldn't get any start/stop commands in the 5404 * first place at this level if the LUN doesn't have a backend. 5405 * That should get stopped by the command decode code. 5406 */ 5407 if (lun->backend == NULL) { 5408 ctl_set_invalid_opcode(ctsio); 5409 ctl_done((union ctl_io *)ctsio); 5410 return (CTL_RETVAL_COMPLETE); 5411 } 5412 5413 /* 5414 * XXX KDM Copan-specific offline behavior. 5415 * Figure out a reasonable way to port this? 5416 */ 5417#ifdef NEEDTOPORT 5418 mtx_lock(&ctl_softc->ctl_lock); 5419 5420 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5421 && (lun->flags & CTL_LUN_OFFLINE)) { 5422 /* 5423 * If the LUN is offline, and the on/offline bit isn't set, 5424 * reject the start or stop. Otherwise, let it through. 5425 */ 5426 mtx_unlock(&ctl_softc->ctl_lock); 5427 ctl_set_lun_not_ready(ctsio); 5428 ctl_done((union ctl_io *)ctsio); 5429 } else { 5430 mtx_unlock(&ctl_softc->ctl_lock); 5431#endif /* NEEDTOPORT */ 5432 /* 5433 * This could be a start or a stop when we're online, 5434 * or a stop/offline or start/online. A start or stop when 5435 * we're offline is covered in the case above. 5436 */ 5437 /* 5438 * In the non-immediate case, we send the request to 5439 * the backend and return status to the user when 5440 * it is done. 5441 * 5442 * In the immediate case, we allocate a new ctl_io 5443 * to hold a copy of the request, and send that to 5444 * the backend. We then set good status on the 5445 * user's request and return it immediately. 5446 */ 5447 if (cdb->byte2 & SSS_IMMED) { 5448 union ctl_io *new_io; 5449 5450 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5451 if (new_io == NULL) { 5452 ctl_set_busy(ctsio); 5453 ctl_done((union ctl_io *)ctsio); 5454 } else { 5455 ctl_copy_io((union ctl_io *)ctsio, 5456 new_io); 5457 retval = lun->backend->config_write(new_io); 5458 ctl_set_success(ctsio); 5459 ctl_done((union ctl_io *)ctsio); 5460 } 5461 } else { 5462 retval = lun->backend->config_write( 5463 (union ctl_io *)ctsio); 5464 } 5465#ifdef NEEDTOPORT 5466 } 5467#endif 5468 return (retval); 5469} 5470 5471/* 5472 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5473 * we don't really do anything with the LBA and length fields if the user 5474 * passes them in. Instead we'll just flush out the cache for the entire 5475 * LUN. 5476 */ 5477int 5478ctl_sync_cache(struct ctl_scsiio *ctsio) 5479{ 5480 struct ctl_lun *lun; 5481 struct ctl_softc *ctl_softc; 5482 uint64_t starting_lba; 5483 uint32_t block_count; 5484 int reladr, immed; 5485 int retval; 5486 5487 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5488 5489 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5490 ctl_softc = control_softc; 5491 retval = 0; 5492 reladr = 0; 5493 immed = 0; 5494 5495 switch (ctsio->cdb[0]) { 5496 case SYNCHRONIZE_CACHE: { 5497 struct scsi_sync_cache *cdb; 5498 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5499 5500 if (cdb->byte2 & SSC_RELADR) 5501 reladr = 1; 5502 5503 if (cdb->byte2 & SSC_IMMED) 5504 immed = 1; 5505 5506 starting_lba = scsi_4btoul(cdb->begin_lba); 5507 block_count = scsi_2btoul(cdb->lb_count); 5508 break; 5509 } 5510 case SYNCHRONIZE_CACHE_16: { 5511 struct scsi_sync_cache_16 *cdb; 5512 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5513 5514 if (cdb->byte2 & SSC_RELADR) 5515 reladr = 1; 5516 5517 if (cdb->byte2 & SSC_IMMED) 5518 immed = 1; 5519 5520 starting_lba = scsi_8btou64(cdb->begin_lba); 5521 block_count = scsi_4btoul(cdb->lb_count); 5522 break; 5523 } 5524 default: 5525 ctl_set_invalid_opcode(ctsio); 5526 ctl_done((union ctl_io *)ctsio); 5527 goto bailout; 5528 break; /* NOTREACHED */ 5529 } 5530 5531 if (immed) { 5532 /* 5533 * We don't support the immediate bit. Since it's in the 5534 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5535 * commands, we can just return the same error in either 5536 * case. 5537 */ 5538 ctl_set_invalid_field(ctsio, 5539 /*sks_valid*/ 1, 5540 /*command*/ 1, 5541 /*field*/ 1, 5542 /*bit_valid*/ 1, 5543 /*bit*/ 1); 5544 ctl_done((union ctl_io *)ctsio); 5545 goto bailout; 5546 } 5547 5548 if (reladr) { 5549 /* 5550 * We don't support the reladr bit either. It can only be 5551 * used with linked commands, and we don't support linked 5552 * commands. Since the bit is in the same place for the 5553 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5554 * just return the same error in either case. 5555 */ 5556 ctl_set_invalid_field(ctsio, 5557 /*sks_valid*/ 1, 5558 /*command*/ 1, 5559 /*field*/ 1, 5560 /*bit_valid*/ 1, 5561 /*bit*/ 0); 5562 ctl_done((union ctl_io *)ctsio); 5563 goto bailout; 5564 } 5565 5566 /* 5567 * We check the LBA and length, but don't do anything with them. 5568 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5569 * get flushed. This check will just help satisfy anyone who wants 5570 * to see an error for an out of range LBA. 5571 */ 5572 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5573 ctl_set_lba_out_of_range(ctsio); 5574 ctl_done((union ctl_io *)ctsio); 5575 goto bailout; 5576 } 5577 5578 /* 5579 * If this LUN has no backend, we can't flush the cache anyway. 5580 */ 5581 if (lun->backend == NULL) { 5582 ctl_set_invalid_opcode(ctsio); 5583 ctl_done((union ctl_io *)ctsio); 5584 goto bailout; 5585 } 5586 5587 /* 5588 * Check to see whether we're configured to send the SYNCHRONIZE 5589 * CACHE command directly to the back end. 5590 */ 5591 mtx_lock(&ctl_softc->ctl_lock); 5592 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5593 && (++(lun->sync_count) >= lun->sync_interval)) { 5594 lun->sync_count = 0; 5595 mtx_unlock(&ctl_softc->ctl_lock); 5596 retval = lun->backend->config_write((union ctl_io *)ctsio); 5597 } else { 5598 mtx_unlock(&ctl_softc->ctl_lock); 5599 ctl_set_success(ctsio); 5600 ctl_done((union ctl_io *)ctsio); 5601 } 5602 5603bailout: 5604 5605 return (retval); 5606} 5607 5608int 5609ctl_format(struct ctl_scsiio *ctsio) 5610{ 5611 struct scsi_format *cdb; 5612 struct ctl_lun *lun; 5613 struct ctl_softc *ctl_softc; 5614 int length, defect_list_len; 5615 5616 CTL_DEBUG_PRINT(("ctl_format\n")); 5617 5618 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5619 ctl_softc = control_softc; 5620 5621 cdb = (struct scsi_format *)ctsio->cdb; 5622 5623 length = 0; 5624 if (cdb->byte2 & SF_FMTDATA) { 5625 if (cdb->byte2 & SF_LONGLIST) 5626 length = sizeof(struct scsi_format_header_long); 5627 else 5628 length = sizeof(struct scsi_format_header_short); 5629 } 5630 5631 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5632 && (length > 0)) { 5633 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5634 ctsio->kern_data_len = length; 5635 ctsio->kern_total_len = length; 5636 ctsio->kern_data_resid = 0; 5637 ctsio->kern_rel_offset = 0; 5638 ctsio->kern_sg_entries = 0; 5639 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5640 ctsio->be_move_done = ctl_config_move_done; 5641 ctl_datamove((union ctl_io *)ctsio); 5642 5643 return (CTL_RETVAL_COMPLETE); 5644 } 5645 5646 defect_list_len = 0; 5647 5648 if (cdb->byte2 & SF_FMTDATA) { 5649 if (cdb->byte2 & SF_LONGLIST) { 5650 struct scsi_format_header_long *header; 5651 5652 header = (struct scsi_format_header_long *) 5653 ctsio->kern_data_ptr; 5654 5655 defect_list_len = scsi_4btoul(header->defect_list_len); 5656 if (defect_list_len != 0) { 5657 ctl_set_invalid_field(ctsio, 5658 /*sks_valid*/ 1, 5659 /*command*/ 0, 5660 /*field*/ 2, 5661 /*bit_valid*/ 0, 5662 /*bit*/ 0); 5663 goto bailout; 5664 } 5665 } else { 5666 struct scsi_format_header_short *header; 5667 5668 header = (struct scsi_format_header_short *) 5669 ctsio->kern_data_ptr; 5670 5671 defect_list_len = scsi_2btoul(header->defect_list_len); 5672 if (defect_list_len != 0) { 5673 ctl_set_invalid_field(ctsio, 5674 /*sks_valid*/ 1, 5675 /*command*/ 0, 5676 /*field*/ 2, 5677 /*bit_valid*/ 0, 5678 /*bit*/ 0); 5679 goto bailout; 5680 } 5681 } 5682 } 5683 5684 /* 5685 * The format command will clear out the "Medium format corrupted" 5686 * status if set by the configuration code. That status is really 5687 * just a way to notify the host that we have lost the media, and 5688 * get them to issue a command that will basically make them think 5689 * they're blowing away the media. 5690 */ 5691 mtx_lock(&ctl_softc->ctl_lock); 5692 lun->flags &= ~CTL_LUN_INOPERABLE; 5693 mtx_unlock(&ctl_softc->ctl_lock); 5694 5695 ctsio->scsi_status = SCSI_STATUS_OK; 5696 ctsio->io_hdr.status = CTL_SUCCESS; 5697bailout: 5698 5699 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5700 free(ctsio->kern_data_ptr, M_CTL); 5701 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5702 } 5703 5704 ctl_done((union ctl_io *)ctsio); 5705 return (CTL_RETVAL_COMPLETE); 5706} 5707 5708int 5709ctl_write_buffer(struct ctl_scsiio *ctsio) 5710{ 5711 struct scsi_write_buffer *cdb; 5712 struct copan_page_header *header; 5713 struct ctl_lun *lun; 5714 struct ctl_softc *ctl_softc; 5715 int buffer_offset, len; 5716 int retval; 5717 5718 header = NULL; 5719 5720 retval = CTL_RETVAL_COMPLETE; 5721 5722 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5723 5724 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5725 ctl_softc = control_softc; 5726 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5727 5728 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5729 ctl_set_invalid_field(ctsio, 5730 /*sks_valid*/ 1, 5731 /*command*/ 1, 5732 /*field*/ 1, 5733 /*bit_valid*/ 1, 5734 /*bit*/ 4); 5735 ctl_done((union ctl_io *)ctsio); 5736 return (CTL_RETVAL_COMPLETE); 5737 } 5738 if (cdb->buffer_id != 0) { 5739 ctl_set_invalid_field(ctsio, 5740 /*sks_valid*/ 1, 5741 /*command*/ 1, 5742 /*field*/ 2, 5743 /*bit_valid*/ 0, 5744 /*bit*/ 0); 5745 ctl_done((union ctl_io *)ctsio); 5746 return (CTL_RETVAL_COMPLETE); 5747 } 5748 5749 len = scsi_3btoul(cdb->length); 5750 buffer_offset = scsi_3btoul(cdb->offset); 5751 5752 if (len > sizeof(lun->write_buffer)) { 5753 ctl_set_invalid_field(ctsio, 5754 /*sks_valid*/ 1, 5755 /*command*/ 1, 5756 /*field*/ 6, 5757 /*bit_valid*/ 0, 5758 /*bit*/ 0); 5759 ctl_done((union ctl_io *)ctsio); 5760 return (CTL_RETVAL_COMPLETE); 5761 } 5762 5763 if (buffer_offset != 0) { 5764 ctl_set_invalid_field(ctsio, 5765 /*sks_valid*/ 1, 5766 /*command*/ 1, 5767 /*field*/ 3, 5768 /*bit_valid*/ 0, 5769 /*bit*/ 0); 5770 ctl_done((union ctl_io *)ctsio); 5771 return (CTL_RETVAL_COMPLETE); 5772 } 5773 5774 /* 5775 * If we've got a kernel request that hasn't been malloced yet, 5776 * malloc it and tell the caller the data buffer is here. 5777 */ 5778 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5779 ctsio->kern_data_ptr = lun->write_buffer; 5780 ctsio->kern_data_len = len; 5781 ctsio->kern_total_len = len; 5782 ctsio->kern_data_resid = 0; 5783 ctsio->kern_rel_offset = 0; 5784 ctsio->kern_sg_entries = 0; 5785 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5786 ctsio->be_move_done = ctl_config_move_done; 5787 ctl_datamove((union ctl_io *)ctsio); 5788 5789 return (CTL_RETVAL_COMPLETE); 5790 } 5791 5792 ctl_done((union ctl_io *)ctsio); 5793 5794 return (CTL_RETVAL_COMPLETE); 5795} 5796 5797int 5798ctl_write_same(struct ctl_scsiio *ctsio) 5799{ 5800 struct ctl_lun *lun; 5801 struct ctl_lba_len_flags *lbalen; 5802 uint64_t lba; 5803 uint32_t num_blocks; 5804 int len, retval; 5805 uint8_t byte2; 5806 5807 retval = CTL_RETVAL_COMPLETE; 5808 5809 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5810 5811 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5812 5813 switch (ctsio->cdb[0]) { 5814 case WRITE_SAME_10: { 5815 struct scsi_write_same_10 *cdb; 5816 5817 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5818 5819 lba = scsi_4btoul(cdb->addr); 5820 num_blocks = scsi_2btoul(cdb->length); 5821 byte2 = cdb->byte2; 5822 break; 5823 } 5824 case WRITE_SAME_16: { 5825 struct scsi_write_same_16 *cdb; 5826 5827 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5828 5829 lba = scsi_8btou64(cdb->addr); 5830 num_blocks = scsi_4btoul(cdb->length); 5831 byte2 = cdb->byte2; 5832 break; 5833 } 5834 default: 5835 /* 5836 * We got a command we don't support. This shouldn't 5837 * happen, commands should be filtered out above us. 5838 */ 5839 ctl_set_invalid_opcode(ctsio); 5840 ctl_done((union ctl_io *)ctsio); 5841 5842 return (CTL_RETVAL_COMPLETE); 5843 break; /* NOTREACHED */ 5844 } 5845 5846 /* 5847 * The first check is to make sure we're in bounds, the second 5848 * check is to catch wrap-around problems. If the lba + num blocks 5849 * is less than the lba, then we've wrapped around and the block 5850 * range is invalid anyway. 5851 */ 5852 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5853 || ((lba + num_blocks) < lba)) { 5854 ctl_set_lba_out_of_range(ctsio); 5855 ctl_done((union ctl_io *)ctsio); 5856 return (CTL_RETVAL_COMPLETE); 5857 } 5858 5859 /* Zero number of blocks means "to the last logical block" */ 5860 if (num_blocks == 0) { 5861 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5862 ctl_set_invalid_field(ctsio, 5863 /*sks_valid*/ 0, 5864 /*command*/ 1, 5865 /*field*/ 0, 5866 /*bit_valid*/ 0, 5867 /*bit*/ 0); 5868 ctl_done((union ctl_io *)ctsio); 5869 return (CTL_RETVAL_COMPLETE); 5870 } 5871 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5872 } 5873 5874 len = lun->be_lun->blocksize; 5875 5876 /* 5877 * If we've got a kernel request that hasn't been malloced yet, 5878 * malloc it and tell the caller the data buffer is here. 5879 */ 5880 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5881 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5882 ctsio->kern_data_len = len; 5883 ctsio->kern_total_len = len; 5884 ctsio->kern_data_resid = 0; 5885 ctsio->kern_rel_offset = 0; 5886 ctsio->kern_sg_entries = 0; 5887 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5888 ctsio->be_move_done = ctl_config_move_done; 5889 ctl_datamove((union ctl_io *)ctsio); 5890 5891 return (CTL_RETVAL_COMPLETE); 5892 } 5893 5894 lbalen = (struct ctl_lba_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5895 lbalen->lba = lba; 5896 lbalen->len = num_blocks; 5897 lbalen->flags = byte2; 5898 retval = lun->backend->config_write((union ctl_io *)ctsio); 5899 5900 return (retval); 5901} 5902 5903int 5904ctl_unmap(struct ctl_scsiio *ctsio) 5905{ 5906 struct ctl_lun *lun; 5907 struct scsi_unmap *cdb; 5908 struct ctl_ptr_len_flags *ptrlen; 5909 struct scsi_unmap_header *hdr; 5910 struct scsi_unmap_desc *buf, *end; 5911 uint64_t lba; 5912 uint32_t num_blocks; 5913 int len, retval; 5914 uint8_t byte2; 5915 5916 retval = CTL_RETVAL_COMPLETE; 5917 5918 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5919 5920 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5921 cdb = (struct scsi_unmap *)ctsio->cdb; 5922 5923 len = scsi_2btoul(cdb->length); 5924 byte2 = cdb->byte2; 5925 5926 /* 5927 * If we've got a kernel request that hasn't been malloced yet, 5928 * malloc it and tell the caller the data buffer is here. 5929 */ 5930 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5931 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5932 ctsio->kern_data_len = len; 5933 ctsio->kern_total_len = len; 5934 ctsio->kern_data_resid = 0; 5935 ctsio->kern_rel_offset = 0; 5936 ctsio->kern_sg_entries = 0; 5937 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5938 ctsio->be_move_done = ctl_config_move_done; 5939 ctl_datamove((union ctl_io *)ctsio); 5940 5941 return (CTL_RETVAL_COMPLETE); 5942 } 5943 5944 len = ctsio->kern_total_len - ctsio->kern_data_resid; 5945 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 5946 if (len < sizeof (*hdr) || 5947 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 5948 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 5949 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 5950 ctl_set_invalid_field(ctsio, 5951 /*sks_valid*/ 0, 5952 /*command*/ 0, 5953 /*field*/ 0, 5954 /*bit_valid*/ 0, 5955 /*bit*/ 0); 5956 ctl_done((union ctl_io *)ctsio); 5957 return (CTL_RETVAL_COMPLETE); 5958 } 5959 len = scsi_2btoul(hdr->desc_length); 5960 buf = (struct scsi_unmap_desc *)(hdr + 1); 5961 end = buf + len / sizeof(*buf); 5962 5963 ptrlen = (struct ctl_ptr_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5964 ptrlen->ptr = (void *)buf; 5965 ptrlen->len = len; 5966 ptrlen->flags = byte2; 5967 5968 for (; buf < end; buf++) { 5969 lba = scsi_8btou64(buf->lba); 5970 num_blocks = scsi_4btoul(buf->length); 5971 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5972 || ((lba + num_blocks) < lba)) { 5973 ctl_set_lba_out_of_range(ctsio); 5974 ctl_done((union ctl_io *)ctsio); 5975 return (CTL_RETVAL_COMPLETE); 5976 } 5977 } 5978 5979 retval = lun->backend->config_write((union ctl_io *)ctsio); 5980 5981 return (retval); 5982} 5983 5984/* 5985 * Note that this function currently doesn't actually do anything inside 5986 * CTL to enforce things if the DQue bit is turned on. 5987 * 5988 * Also note that this function can't be used in the default case, because 5989 * the DQue bit isn't set in the changeable mask for the control mode page 5990 * anyway. This is just here as an example for how to implement a page 5991 * handler, and a placeholder in case we want to allow the user to turn 5992 * tagged queueing on and off. 5993 * 5994 * The D_SENSE bit handling is functional, however, and will turn 5995 * descriptor sense on and off for a given LUN. 5996 */ 5997int 5998ctl_control_page_handler(struct ctl_scsiio *ctsio, 5999 struct ctl_page_index *page_index, uint8_t *page_ptr) 6000{ 6001 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 6002 struct ctl_lun *lun; 6003 struct ctl_softc *softc; 6004 int set_ua; 6005 uint32_t initidx; 6006 6007 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6008 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 6009 set_ua = 0; 6010 6011 user_cp = (struct scsi_control_page *)page_ptr; 6012 current_cp = (struct scsi_control_page *) 6013 (page_index->page_data + (page_index->page_len * 6014 CTL_PAGE_CURRENT)); 6015 saved_cp = (struct scsi_control_page *) 6016 (page_index->page_data + (page_index->page_len * 6017 CTL_PAGE_SAVED)); 6018 6019 softc = control_softc; 6020 6021 mtx_lock(&softc->ctl_lock); 6022 if (((current_cp->rlec & SCP_DSENSE) == 0) 6023 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 6024 /* 6025 * Descriptor sense is currently turned off and the user 6026 * wants to turn it on. 6027 */ 6028 current_cp->rlec |= SCP_DSENSE; 6029 saved_cp->rlec |= SCP_DSENSE; 6030 lun->flags |= CTL_LUN_SENSE_DESC; 6031 set_ua = 1; 6032 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 6033 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 6034 /* 6035 * Descriptor sense is currently turned on, and the user 6036 * wants to turn it off. 6037 */ 6038 current_cp->rlec &= ~SCP_DSENSE; 6039 saved_cp->rlec &= ~SCP_DSENSE; 6040 lun->flags &= ~CTL_LUN_SENSE_DESC; 6041 set_ua = 1; 6042 } 6043 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 6044 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6045#ifdef NEEDTOPORT 6046 csevent_log(CSC_CTL | CSC_SHELF_SW | 6047 CTL_UNTAG_TO_UNTAG, 6048 csevent_LogType_Trace, 6049 csevent_Severity_Information, 6050 csevent_AlertLevel_Green, 6051 csevent_FRU_Firmware, 6052 csevent_FRU_Unknown, 6053 "Received untagged to untagged transition"); 6054#endif /* NEEDTOPORT */ 6055 } else { 6056#ifdef NEEDTOPORT 6057 csevent_log(CSC_CTL | CSC_SHELF_SW | 6058 CTL_UNTAG_TO_TAG, 6059 csevent_LogType_ConfigChange, 6060 csevent_Severity_Information, 6061 csevent_AlertLevel_Green, 6062 csevent_FRU_Firmware, 6063 csevent_FRU_Unknown, 6064 "Received untagged to tagged " 6065 "queueing transition"); 6066#endif /* NEEDTOPORT */ 6067 6068 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6069 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6070 set_ua = 1; 6071 } 6072 } else { 6073 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6074#ifdef NEEDTOPORT 6075 csevent_log(CSC_CTL | CSC_SHELF_SW | 6076 CTL_TAG_TO_UNTAG, 6077 csevent_LogType_ConfigChange, 6078 csevent_Severity_Warning, 6079 csevent_AlertLevel_Yellow, 6080 csevent_FRU_Firmware, 6081 csevent_FRU_Unknown, 6082 "Received tagged queueing to untagged " 6083 "transition"); 6084#endif /* NEEDTOPORT */ 6085 6086 current_cp->queue_flags |= SCP_QUEUE_DQUE; 6087 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 6088 set_ua = 1; 6089 } else { 6090#ifdef NEEDTOPORT 6091 csevent_log(CSC_CTL | CSC_SHELF_SW | 6092 CTL_TAG_TO_TAG, 6093 csevent_LogType_Trace, 6094 csevent_Severity_Information, 6095 csevent_AlertLevel_Green, 6096 csevent_FRU_Firmware, 6097 csevent_FRU_Unknown, 6098 "Received tagged queueing to tagged " 6099 "queueing transition"); 6100#endif /* NEEDTOPORT */ 6101 } 6102 } 6103 if (set_ua != 0) { 6104 int i; 6105 /* 6106 * Let other initiators know that the mode 6107 * parameters for this LUN have changed. 6108 */ 6109 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6110 if (i == initidx) 6111 continue; 6112 6113 lun->pending_sense[i].ua_pending |= 6114 CTL_UA_MODE_CHANGE; 6115 } 6116 } 6117 mtx_unlock(&softc->ctl_lock); 6118 6119 return (0); 6120} 6121 6122int 6123ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6124 struct ctl_page_index *page_index, uint8_t *page_ptr) 6125{ 6126 return (0); 6127} 6128 6129int 6130ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6131 struct ctl_page_index *page_index, int pc) 6132{ 6133 struct copan_power_subpage *page; 6134 6135 page = (struct copan_power_subpage *)page_index->page_data + 6136 (page_index->page_len * pc); 6137 6138 switch (pc) { 6139 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6140 /* 6141 * We don't update the changable bits for this page. 6142 */ 6143 break; 6144 case SMS_PAGE_CTRL_CURRENT >> 6: 6145 case SMS_PAGE_CTRL_DEFAULT >> 6: 6146 case SMS_PAGE_CTRL_SAVED >> 6: 6147#ifdef NEEDTOPORT 6148 ctl_update_power_subpage(page); 6149#endif 6150 break; 6151 default: 6152#ifdef NEEDTOPORT 6153 EPRINT(0, "Invalid PC %d!!", pc); 6154#endif 6155 break; 6156 } 6157 return (0); 6158} 6159 6160 6161int 6162ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6163 struct ctl_page_index *page_index, uint8_t *page_ptr) 6164{ 6165 struct copan_aps_subpage *user_sp; 6166 struct copan_aps_subpage *current_sp; 6167 union ctl_modepage_info *modepage_info; 6168 struct ctl_softc *softc; 6169 struct ctl_lun *lun; 6170 int retval; 6171 6172 retval = CTL_RETVAL_COMPLETE; 6173 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6174 (page_index->page_len * CTL_PAGE_CURRENT)); 6175 softc = control_softc; 6176 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6177 6178 user_sp = (struct copan_aps_subpage *)page_ptr; 6179 6180 modepage_info = (union ctl_modepage_info *) 6181 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6182 6183 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6184 modepage_info->header.subpage = page_index->subpage; 6185 modepage_info->aps.lock_active = user_sp->lock_active; 6186 6187 mtx_lock(&softc->ctl_lock); 6188 6189 /* 6190 * If there is a request to lock the LUN and another LUN is locked 6191 * this is an error. If the requested LUN is already locked ignore 6192 * the request. If no LUN is locked attempt to lock it. 6193 * if there is a request to unlock the LUN and the LUN is currently 6194 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6195 * if another LUN is locked or no LUN is locked. 6196 */ 6197 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6198 if (softc->aps_locked_lun == lun->lun) { 6199 /* 6200 * This LUN is already locked, so we're done. 6201 */ 6202 retval = CTL_RETVAL_COMPLETE; 6203 } else if (softc->aps_locked_lun == 0) { 6204 /* 6205 * No one has the lock, pass the request to the 6206 * backend. 6207 */ 6208 retval = lun->backend->config_write( 6209 (union ctl_io *)ctsio); 6210 } else { 6211 /* 6212 * Someone else has the lock, throw out the request. 6213 */ 6214 ctl_set_already_locked(ctsio); 6215 free(ctsio->kern_data_ptr, M_CTL); 6216 ctl_done((union ctl_io *)ctsio); 6217 6218 /* 6219 * Set the return value so that ctl_do_mode_select() 6220 * won't try to complete the command. We already 6221 * completed it here. 6222 */ 6223 retval = CTL_RETVAL_ERROR; 6224 } 6225 } else if (softc->aps_locked_lun == lun->lun) { 6226 /* 6227 * This LUN is locked, so pass the unlock request to the 6228 * backend. 6229 */ 6230 retval = lun->backend->config_write((union ctl_io *)ctsio); 6231 } 6232 mtx_unlock(&softc->ctl_lock); 6233 6234 return (retval); 6235} 6236 6237int 6238ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6239 struct ctl_page_index *page_index, 6240 uint8_t *page_ptr) 6241{ 6242 uint8_t *c; 6243 int i; 6244 6245 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6246 ctl_time_io_secs = 6247 (c[0] << 8) | 6248 (c[1] << 0) | 6249 0; 6250 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6251 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6252 printf("page data:"); 6253 for (i=0; i<8; i++) 6254 printf(" %.2x",page_ptr[i]); 6255 printf("\n"); 6256 return (0); 6257} 6258 6259int 6260ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6261 struct ctl_page_index *page_index, 6262 int pc) 6263{ 6264 struct copan_debugconf_subpage *page; 6265 6266 page = (struct copan_debugconf_subpage *)page_index->page_data + 6267 (page_index->page_len * pc); 6268 6269 switch (pc) { 6270 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6271 case SMS_PAGE_CTRL_DEFAULT >> 6: 6272 case SMS_PAGE_CTRL_SAVED >> 6: 6273 /* 6274 * We don't update the changable or default bits for this page. 6275 */ 6276 break; 6277 case SMS_PAGE_CTRL_CURRENT >> 6: 6278 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6279 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6280 break; 6281 default: 6282#ifdef NEEDTOPORT 6283 EPRINT(0, "Invalid PC %d!!", pc); 6284#endif /* NEEDTOPORT */ 6285 break; 6286 } 6287 return (0); 6288} 6289 6290 6291static int 6292ctl_do_mode_select(union ctl_io *io) 6293{ 6294 struct scsi_mode_page_header *page_header; 6295 struct ctl_page_index *page_index; 6296 struct ctl_scsiio *ctsio; 6297 int control_dev, page_len; 6298 int page_len_offset, page_len_size; 6299 union ctl_modepage_info *modepage_info; 6300 struct ctl_lun *lun; 6301 int *len_left, *len_used; 6302 int retval, i; 6303 6304 ctsio = &io->scsiio; 6305 page_index = NULL; 6306 page_len = 0; 6307 retval = CTL_RETVAL_COMPLETE; 6308 6309 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6310 6311 if (lun->be_lun->lun_type != T_DIRECT) 6312 control_dev = 1; 6313 else 6314 control_dev = 0; 6315 6316 modepage_info = (union ctl_modepage_info *) 6317 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6318 len_left = &modepage_info->header.len_left; 6319 len_used = &modepage_info->header.len_used; 6320 6321do_next_page: 6322 6323 page_header = (struct scsi_mode_page_header *) 6324 (ctsio->kern_data_ptr + *len_used); 6325 6326 if (*len_left == 0) { 6327 free(ctsio->kern_data_ptr, M_CTL); 6328 ctl_set_success(ctsio); 6329 ctl_done((union ctl_io *)ctsio); 6330 return (CTL_RETVAL_COMPLETE); 6331 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6332 6333 free(ctsio->kern_data_ptr, M_CTL); 6334 ctl_set_param_len_error(ctsio); 6335 ctl_done((union ctl_io *)ctsio); 6336 return (CTL_RETVAL_COMPLETE); 6337 6338 } else if ((page_header->page_code & SMPH_SPF) 6339 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6340 6341 free(ctsio->kern_data_ptr, M_CTL); 6342 ctl_set_param_len_error(ctsio); 6343 ctl_done((union ctl_io *)ctsio); 6344 return (CTL_RETVAL_COMPLETE); 6345 } 6346 6347 6348 /* 6349 * XXX KDM should we do something with the block descriptor? 6350 */ 6351 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6352 6353 if ((control_dev != 0) 6354 && (lun->mode_pages.index[i].page_flags & 6355 CTL_PAGE_FLAG_DISK_ONLY)) 6356 continue; 6357 6358 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6359 (page_header->page_code & SMPH_PC_MASK)) 6360 continue; 6361 6362 /* 6363 * If neither page has a subpage code, then we've got a 6364 * match. 6365 */ 6366 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6367 && ((page_header->page_code & SMPH_SPF) == 0)) { 6368 page_index = &lun->mode_pages.index[i]; 6369 page_len = page_header->page_length; 6370 break; 6371 } 6372 6373 /* 6374 * If both pages have subpages, then the subpage numbers 6375 * have to match. 6376 */ 6377 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6378 && (page_header->page_code & SMPH_SPF)) { 6379 struct scsi_mode_page_header_sp *sph; 6380 6381 sph = (struct scsi_mode_page_header_sp *)page_header; 6382 6383 if (lun->mode_pages.index[i].subpage == 6384 sph->subpage) { 6385 page_index = &lun->mode_pages.index[i]; 6386 page_len = scsi_2btoul(sph->page_length); 6387 break; 6388 } 6389 } 6390 } 6391 6392 /* 6393 * If we couldn't find the page, or if we don't have a mode select 6394 * handler for it, send back an error to the user. 6395 */ 6396 if ((page_index == NULL) 6397 || (page_index->select_handler == NULL)) { 6398 ctl_set_invalid_field(ctsio, 6399 /*sks_valid*/ 1, 6400 /*command*/ 0, 6401 /*field*/ *len_used, 6402 /*bit_valid*/ 0, 6403 /*bit*/ 0); 6404 free(ctsio->kern_data_ptr, M_CTL); 6405 ctl_done((union ctl_io *)ctsio); 6406 return (CTL_RETVAL_COMPLETE); 6407 } 6408 6409 if (page_index->page_code & SMPH_SPF) { 6410 page_len_offset = 2; 6411 page_len_size = 2; 6412 } else { 6413 page_len_size = 1; 6414 page_len_offset = 1; 6415 } 6416 6417 /* 6418 * If the length the initiator gives us isn't the one we specify in 6419 * the mode page header, or if they didn't specify enough data in 6420 * the CDB to avoid truncating this page, kick out the request. 6421 */ 6422 if ((page_len != (page_index->page_len - page_len_offset - 6423 page_len_size)) 6424 || (*len_left < page_index->page_len)) { 6425 6426 6427 ctl_set_invalid_field(ctsio, 6428 /*sks_valid*/ 1, 6429 /*command*/ 0, 6430 /*field*/ *len_used + page_len_offset, 6431 /*bit_valid*/ 0, 6432 /*bit*/ 0); 6433 free(ctsio->kern_data_ptr, M_CTL); 6434 ctl_done((union ctl_io *)ctsio); 6435 return (CTL_RETVAL_COMPLETE); 6436 } 6437 6438 /* 6439 * Run through the mode page, checking to make sure that the bits 6440 * the user changed are actually legal for him to change. 6441 */ 6442 for (i = 0; i < page_index->page_len; i++) { 6443 uint8_t *user_byte, *change_mask, *current_byte; 6444 int bad_bit; 6445 int j; 6446 6447 user_byte = (uint8_t *)page_header + i; 6448 change_mask = page_index->page_data + 6449 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6450 current_byte = page_index->page_data + 6451 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6452 6453 /* 6454 * Check to see whether the user set any bits in this byte 6455 * that he is not allowed to set. 6456 */ 6457 if ((*user_byte & ~(*change_mask)) == 6458 (*current_byte & ~(*change_mask))) 6459 continue; 6460 6461 /* 6462 * Go through bit by bit to determine which one is illegal. 6463 */ 6464 bad_bit = 0; 6465 for (j = 7; j >= 0; j--) { 6466 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6467 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6468 bad_bit = i; 6469 break; 6470 } 6471 } 6472 ctl_set_invalid_field(ctsio, 6473 /*sks_valid*/ 1, 6474 /*command*/ 0, 6475 /*field*/ *len_used + i, 6476 /*bit_valid*/ 1, 6477 /*bit*/ bad_bit); 6478 free(ctsio->kern_data_ptr, M_CTL); 6479 ctl_done((union ctl_io *)ctsio); 6480 return (CTL_RETVAL_COMPLETE); 6481 } 6482 6483 /* 6484 * Decrement these before we call the page handler, since we may 6485 * end up getting called back one way or another before the handler 6486 * returns to this context. 6487 */ 6488 *len_left -= page_index->page_len; 6489 *len_used += page_index->page_len; 6490 6491 retval = page_index->select_handler(ctsio, page_index, 6492 (uint8_t *)page_header); 6493 6494 /* 6495 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6496 * wait until this queued command completes to finish processing 6497 * the mode page. If it returns anything other than 6498 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6499 * already set the sense information, freed the data pointer, and 6500 * completed the io for us. 6501 */ 6502 if (retval != CTL_RETVAL_COMPLETE) 6503 goto bailout_no_done; 6504 6505 /* 6506 * If the initiator sent us more than one page, parse the next one. 6507 */ 6508 if (*len_left > 0) 6509 goto do_next_page; 6510 6511 ctl_set_success(ctsio); 6512 free(ctsio->kern_data_ptr, M_CTL); 6513 ctl_done((union ctl_io *)ctsio); 6514 6515bailout_no_done: 6516 6517 return (CTL_RETVAL_COMPLETE); 6518 6519} 6520 6521int 6522ctl_mode_select(struct ctl_scsiio *ctsio) 6523{ 6524 int param_len, pf, sp; 6525 int header_size, bd_len; 6526 int len_left, len_used; 6527 struct ctl_page_index *page_index; 6528 struct ctl_lun *lun; 6529 int control_dev, page_len; 6530 union ctl_modepage_info *modepage_info; 6531 int retval; 6532 6533 pf = 0; 6534 sp = 0; 6535 page_len = 0; 6536 len_used = 0; 6537 len_left = 0; 6538 retval = 0; 6539 bd_len = 0; 6540 page_index = NULL; 6541 6542 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6543 6544 if (lun->be_lun->lun_type != T_DIRECT) 6545 control_dev = 1; 6546 else 6547 control_dev = 0; 6548 6549 switch (ctsio->cdb[0]) { 6550 case MODE_SELECT_6: { 6551 struct scsi_mode_select_6 *cdb; 6552 6553 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6554 6555 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6556 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6557 6558 param_len = cdb->length; 6559 header_size = sizeof(struct scsi_mode_header_6); 6560 break; 6561 } 6562 case MODE_SELECT_10: { 6563 struct scsi_mode_select_10 *cdb; 6564 6565 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6566 6567 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6568 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6569 6570 param_len = scsi_2btoul(cdb->length); 6571 header_size = sizeof(struct scsi_mode_header_10); 6572 break; 6573 } 6574 default: 6575 ctl_set_invalid_opcode(ctsio); 6576 ctl_done((union ctl_io *)ctsio); 6577 return (CTL_RETVAL_COMPLETE); 6578 break; /* NOTREACHED */ 6579 } 6580 6581 /* 6582 * From SPC-3: 6583 * "A parameter list length of zero indicates that the Data-Out Buffer 6584 * shall be empty. This condition shall not be considered as an error." 6585 */ 6586 if (param_len == 0) { 6587 ctl_set_success(ctsio); 6588 ctl_done((union ctl_io *)ctsio); 6589 return (CTL_RETVAL_COMPLETE); 6590 } 6591 6592 /* 6593 * Since we'll hit this the first time through, prior to 6594 * allocation, we don't need to free a data buffer here. 6595 */ 6596 if (param_len < header_size) { 6597 ctl_set_param_len_error(ctsio); 6598 ctl_done((union ctl_io *)ctsio); 6599 return (CTL_RETVAL_COMPLETE); 6600 } 6601 6602 /* 6603 * Allocate the data buffer and grab the user's data. In theory, 6604 * we shouldn't have to sanity check the parameter list length here 6605 * because the maximum size is 64K. We should be able to malloc 6606 * that much without too many problems. 6607 */ 6608 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6609 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6610 ctsio->kern_data_len = param_len; 6611 ctsio->kern_total_len = param_len; 6612 ctsio->kern_data_resid = 0; 6613 ctsio->kern_rel_offset = 0; 6614 ctsio->kern_sg_entries = 0; 6615 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6616 ctsio->be_move_done = ctl_config_move_done; 6617 ctl_datamove((union ctl_io *)ctsio); 6618 6619 return (CTL_RETVAL_COMPLETE); 6620 } 6621 6622 switch (ctsio->cdb[0]) { 6623 case MODE_SELECT_6: { 6624 struct scsi_mode_header_6 *mh6; 6625 6626 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6627 bd_len = mh6->blk_desc_len; 6628 break; 6629 } 6630 case MODE_SELECT_10: { 6631 struct scsi_mode_header_10 *mh10; 6632 6633 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6634 bd_len = scsi_2btoul(mh10->blk_desc_len); 6635 break; 6636 } 6637 default: 6638 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6639 break; 6640 } 6641 6642 if (param_len < (header_size + bd_len)) { 6643 free(ctsio->kern_data_ptr, M_CTL); 6644 ctl_set_param_len_error(ctsio); 6645 ctl_done((union ctl_io *)ctsio); 6646 return (CTL_RETVAL_COMPLETE); 6647 } 6648 6649 /* 6650 * Set the IO_CONT flag, so that if this I/O gets passed to 6651 * ctl_config_write_done(), it'll get passed back to 6652 * ctl_do_mode_select() for further processing, or completion if 6653 * we're all done. 6654 */ 6655 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6656 ctsio->io_cont = ctl_do_mode_select; 6657 6658 modepage_info = (union ctl_modepage_info *) 6659 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6660 6661 memset(modepage_info, 0, sizeof(*modepage_info)); 6662 6663 len_left = param_len - header_size - bd_len; 6664 len_used = header_size + bd_len; 6665 6666 modepage_info->header.len_left = len_left; 6667 modepage_info->header.len_used = len_used; 6668 6669 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6670} 6671 6672int 6673ctl_mode_sense(struct ctl_scsiio *ctsio) 6674{ 6675 struct ctl_lun *lun; 6676 int pc, page_code, dbd, llba, subpage; 6677 int alloc_len, page_len, header_len, total_len; 6678 struct scsi_mode_block_descr *block_desc; 6679 struct ctl_page_index *page_index; 6680 int control_dev; 6681 6682 dbd = 0; 6683 llba = 0; 6684 block_desc = NULL; 6685 page_index = NULL; 6686 6687 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6688 6689 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6690 6691 if (lun->be_lun->lun_type != T_DIRECT) 6692 control_dev = 1; 6693 else 6694 control_dev = 0; 6695 6696 switch (ctsio->cdb[0]) { 6697 case MODE_SENSE_6: { 6698 struct scsi_mode_sense_6 *cdb; 6699 6700 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6701 6702 header_len = sizeof(struct scsi_mode_hdr_6); 6703 if (cdb->byte2 & SMS_DBD) 6704 dbd = 1; 6705 else 6706 header_len += sizeof(struct scsi_mode_block_descr); 6707 6708 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6709 page_code = cdb->page & SMS_PAGE_CODE; 6710 subpage = cdb->subpage; 6711 alloc_len = cdb->length; 6712 break; 6713 } 6714 case MODE_SENSE_10: { 6715 struct scsi_mode_sense_10 *cdb; 6716 6717 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6718 6719 header_len = sizeof(struct scsi_mode_hdr_10); 6720 6721 if (cdb->byte2 & SMS_DBD) 6722 dbd = 1; 6723 else 6724 header_len += sizeof(struct scsi_mode_block_descr); 6725 if (cdb->byte2 & SMS10_LLBAA) 6726 llba = 1; 6727 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6728 page_code = cdb->page & SMS_PAGE_CODE; 6729 subpage = cdb->subpage; 6730 alloc_len = scsi_2btoul(cdb->length); 6731 break; 6732 } 6733 default: 6734 ctl_set_invalid_opcode(ctsio); 6735 ctl_done((union ctl_io *)ctsio); 6736 return (CTL_RETVAL_COMPLETE); 6737 break; /* NOTREACHED */ 6738 } 6739 6740 /* 6741 * We have to make a first pass through to calculate the size of 6742 * the pages that match the user's query. Then we allocate enough 6743 * memory to hold it, and actually copy the data into the buffer. 6744 */ 6745 switch (page_code) { 6746 case SMS_ALL_PAGES_PAGE: { 6747 int i; 6748 6749 page_len = 0; 6750 6751 /* 6752 * At the moment, values other than 0 and 0xff here are 6753 * reserved according to SPC-3. 6754 */ 6755 if ((subpage != SMS_SUBPAGE_PAGE_0) 6756 && (subpage != SMS_SUBPAGE_ALL)) { 6757 ctl_set_invalid_field(ctsio, 6758 /*sks_valid*/ 1, 6759 /*command*/ 1, 6760 /*field*/ 3, 6761 /*bit_valid*/ 0, 6762 /*bit*/ 0); 6763 ctl_done((union ctl_io *)ctsio); 6764 return (CTL_RETVAL_COMPLETE); 6765 } 6766 6767 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6768 if ((control_dev != 0) 6769 && (lun->mode_pages.index[i].page_flags & 6770 CTL_PAGE_FLAG_DISK_ONLY)) 6771 continue; 6772 6773 /* 6774 * We don't use this subpage if the user didn't 6775 * request all subpages. 6776 */ 6777 if ((lun->mode_pages.index[i].subpage != 0) 6778 && (subpage == SMS_SUBPAGE_PAGE_0)) 6779 continue; 6780 6781#if 0 6782 printf("found page %#x len %d\n", 6783 lun->mode_pages.index[i].page_code & 6784 SMPH_PC_MASK, 6785 lun->mode_pages.index[i].page_len); 6786#endif 6787 page_len += lun->mode_pages.index[i].page_len; 6788 } 6789 break; 6790 } 6791 default: { 6792 int i; 6793 6794 page_len = 0; 6795 6796 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6797 /* Look for the right page code */ 6798 if ((lun->mode_pages.index[i].page_code & 6799 SMPH_PC_MASK) != page_code) 6800 continue; 6801 6802 /* Look for the right subpage or the subpage wildcard*/ 6803 if ((lun->mode_pages.index[i].subpage != subpage) 6804 && (subpage != SMS_SUBPAGE_ALL)) 6805 continue; 6806 6807 /* Make sure the page is supported for this dev type */ 6808 if ((control_dev != 0) 6809 && (lun->mode_pages.index[i].page_flags & 6810 CTL_PAGE_FLAG_DISK_ONLY)) 6811 continue; 6812 6813#if 0 6814 printf("found page %#x len %d\n", 6815 lun->mode_pages.index[i].page_code & 6816 SMPH_PC_MASK, 6817 lun->mode_pages.index[i].page_len); 6818#endif 6819 6820 page_len += lun->mode_pages.index[i].page_len; 6821 } 6822 6823 if (page_len == 0) { 6824 ctl_set_invalid_field(ctsio, 6825 /*sks_valid*/ 1, 6826 /*command*/ 1, 6827 /*field*/ 2, 6828 /*bit_valid*/ 1, 6829 /*bit*/ 5); 6830 ctl_done((union ctl_io *)ctsio); 6831 return (CTL_RETVAL_COMPLETE); 6832 } 6833 break; 6834 } 6835 } 6836 6837 total_len = header_len + page_len; 6838#if 0 6839 printf("header_len = %d, page_len = %d, total_len = %d\n", 6840 header_len, page_len, total_len); 6841#endif 6842 6843 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6844 ctsio->kern_sg_entries = 0; 6845 ctsio->kern_data_resid = 0; 6846 ctsio->kern_rel_offset = 0; 6847 if (total_len < alloc_len) { 6848 ctsio->residual = alloc_len - total_len; 6849 ctsio->kern_data_len = total_len; 6850 ctsio->kern_total_len = total_len; 6851 } else { 6852 ctsio->residual = 0; 6853 ctsio->kern_data_len = alloc_len; 6854 ctsio->kern_total_len = alloc_len; 6855 } 6856 6857 switch (ctsio->cdb[0]) { 6858 case MODE_SENSE_6: { 6859 struct scsi_mode_hdr_6 *header; 6860 6861 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6862 6863 header->datalen = ctl_min(total_len - 1, 254); 6864 6865 if (dbd) 6866 header->block_descr_len = 0; 6867 else 6868 header->block_descr_len = 6869 sizeof(struct scsi_mode_block_descr); 6870 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6871 break; 6872 } 6873 case MODE_SENSE_10: { 6874 struct scsi_mode_hdr_10 *header; 6875 int datalen; 6876 6877 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6878 6879 datalen = ctl_min(total_len - 2, 65533); 6880 scsi_ulto2b(datalen, header->datalen); 6881 if (dbd) 6882 scsi_ulto2b(0, header->block_descr_len); 6883 else 6884 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6885 header->block_descr_len); 6886 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6887 break; 6888 } 6889 default: 6890 panic("invalid CDB type %#x", ctsio->cdb[0]); 6891 break; /* NOTREACHED */ 6892 } 6893 6894 /* 6895 * If we've got a disk, use its blocksize in the block 6896 * descriptor. Otherwise, just set it to 0. 6897 */ 6898 if (dbd == 0) { 6899 if (control_dev != 0) 6900 scsi_ulto3b(lun->be_lun->blocksize, 6901 block_desc->block_len); 6902 else 6903 scsi_ulto3b(0, block_desc->block_len); 6904 } 6905 6906 switch (page_code) { 6907 case SMS_ALL_PAGES_PAGE: { 6908 int i, data_used; 6909 6910 data_used = header_len; 6911 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6912 struct ctl_page_index *page_index; 6913 6914 page_index = &lun->mode_pages.index[i]; 6915 6916 if ((control_dev != 0) 6917 && (page_index->page_flags & 6918 CTL_PAGE_FLAG_DISK_ONLY)) 6919 continue; 6920 6921 /* 6922 * We don't use this subpage if the user didn't 6923 * request all subpages. We already checked (above) 6924 * to make sure the user only specified a subpage 6925 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6926 */ 6927 if ((page_index->subpage != 0) 6928 && (subpage == SMS_SUBPAGE_PAGE_0)) 6929 continue; 6930 6931 /* 6932 * Call the handler, if it exists, to update the 6933 * page to the latest values. 6934 */ 6935 if (page_index->sense_handler != NULL) 6936 page_index->sense_handler(ctsio, page_index,pc); 6937 6938 memcpy(ctsio->kern_data_ptr + data_used, 6939 page_index->page_data + 6940 (page_index->page_len * pc), 6941 page_index->page_len); 6942 data_used += page_index->page_len; 6943 } 6944 break; 6945 } 6946 default: { 6947 int i, data_used; 6948 6949 data_used = header_len; 6950 6951 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6952 struct ctl_page_index *page_index; 6953 6954 page_index = &lun->mode_pages.index[i]; 6955 6956 /* Look for the right page code */ 6957 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6958 continue; 6959 6960 /* Look for the right subpage or the subpage wildcard*/ 6961 if ((page_index->subpage != subpage) 6962 && (subpage != SMS_SUBPAGE_ALL)) 6963 continue; 6964 6965 /* Make sure the page is supported for this dev type */ 6966 if ((control_dev != 0) 6967 && (page_index->page_flags & 6968 CTL_PAGE_FLAG_DISK_ONLY)) 6969 continue; 6970 6971 /* 6972 * Call the handler, if it exists, to update the 6973 * page to the latest values. 6974 */ 6975 if (page_index->sense_handler != NULL) 6976 page_index->sense_handler(ctsio, page_index,pc); 6977 6978 memcpy(ctsio->kern_data_ptr + data_used, 6979 page_index->page_data + 6980 (page_index->page_len * pc), 6981 page_index->page_len); 6982 data_used += page_index->page_len; 6983 } 6984 break; 6985 } 6986 } 6987 6988 ctsio->scsi_status = SCSI_STATUS_OK; 6989 6990 ctsio->be_move_done = ctl_config_move_done; 6991 ctl_datamove((union ctl_io *)ctsio); 6992 6993 return (CTL_RETVAL_COMPLETE); 6994} 6995 6996int 6997ctl_read_capacity(struct ctl_scsiio *ctsio) 6998{ 6999 struct scsi_read_capacity *cdb; 7000 struct scsi_read_capacity_data *data; 7001 struct ctl_lun *lun; 7002 uint32_t lba; 7003 7004 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 7005 7006 cdb = (struct scsi_read_capacity *)ctsio->cdb; 7007 7008 lba = scsi_4btoul(cdb->addr); 7009 if (((cdb->pmi & SRC_PMI) == 0) 7010 && (lba != 0)) { 7011 ctl_set_invalid_field(/*ctsio*/ ctsio, 7012 /*sks_valid*/ 1, 7013 /*command*/ 1, 7014 /*field*/ 2, 7015 /*bit_valid*/ 0, 7016 /*bit*/ 0); 7017 ctl_done((union ctl_io *)ctsio); 7018 return (CTL_RETVAL_COMPLETE); 7019 } 7020 7021 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7022 7023 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7024 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 7025 ctsio->residual = 0; 7026 ctsio->kern_data_len = sizeof(*data); 7027 ctsio->kern_total_len = sizeof(*data); 7028 ctsio->kern_data_resid = 0; 7029 ctsio->kern_rel_offset = 0; 7030 ctsio->kern_sg_entries = 0; 7031 7032 /* 7033 * If the maximum LBA is greater than 0xfffffffe, the user must 7034 * issue a SERVICE ACTION IN (16) command, with the read capacity 7035 * serivce action set. 7036 */ 7037 if (lun->be_lun->maxlba > 0xfffffffe) 7038 scsi_ulto4b(0xffffffff, data->addr); 7039 else 7040 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 7041 7042 /* 7043 * XXX KDM this may not be 512 bytes... 7044 */ 7045 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7046 7047 ctsio->scsi_status = SCSI_STATUS_OK; 7048 7049 ctsio->be_move_done = ctl_config_move_done; 7050 ctl_datamove((union ctl_io *)ctsio); 7051 7052 return (CTL_RETVAL_COMPLETE); 7053} 7054 7055static int 7056ctl_read_capacity_16(struct ctl_scsiio *ctsio) 7057{ 7058 struct scsi_read_capacity_16 *cdb; 7059 struct scsi_read_capacity_data_long *data; 7060 struct ctl_lun *lun; 7061 uint64_t lba; 7062 uint32_t alloc_len; 7063 7064 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 7065 7066 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 7067 7068 alloc_len = scsi_4btoul(cdb->alloc_len); 7069 lba = scsi_8btou64(cdb->addr); 7070 7071 if ((cdb->reladr & SRC16_PMI) 7072 && (lba != 0)) { 7073 ctl_set_invalid_field(/*ctsio*/ ctsio, 7074 /*sks_valid*/ 1, 7075 /*command*/ 1, 7076 /*field*/ 2, 7077 /*bit_valid*/ 0, 7078 /*bit*/ 0); 7079 ctl_done((union ctl_io *)ctsio); 7080 return (CTL_RETVAL_COMPLETE); 7081 } 7082 7083 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7084 7085 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7086 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 7087 7088 if (sizeof(*data) < alloc_len) { 7089 ctsio->residual = alloc_len - sizeof(*data); 7090 ctsio->kern_data_len = sizeof(*data); 7091 ctsio->kern_total_len = sizeof(*data); 7092 } else { 7093 ctsio->residual = 0; 7094 ctsio->kern_data_len = alloc_len; 7095 ctsio->kern_total_len = alloc_len; 7096 } 7097 ctsio->kern_data_resid = 0; 7098 ctsio->kern_rel_offset = 0; 7099 ctsio->kern_sg_entries = 0; 7100 7101 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7102 /* XXX KDM this may not be 512 bytes... */ 7103 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7104 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7105 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7106 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7107 data->lalba_lbp[0] |= SRC16_LBPME; 7108 7109 ctsio->scsi_status = SCSI_STATUS_OK; 7110 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 mtx_lock(&softc->ctl_lock); 7181 single = ctl_is_single; 7182 mtx_unlock(&softc->ctl_lock); 7183 7184 if (single) 7185 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 7186 else 7187 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7188 7189 total_len = sizeof(struct scsi_target_group_data) + 7190 sizeof(struct scsi_target_port_group_descriptor) * 7191 num_target_port_groups + 7192 sizeof(struct scsi_target_port_descriptor) * 7193 NUM_PORTS_PER_GRP * num_target_port_groups; 7194 7195 alloc_len = scsi_4btoul(cdb->length); 7196 7197 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7198 7199 ctsio->kern_sg_entries = 0; 7200 7201 if (total_len < alloc_len) { 7202 ctsio->residual = alloc_len - total_len; 7203 ctsio->kern_data_len = total_len; 7204 ctsio->kern_total_len = total_len; 7205 } else { 7206 ctsio->residual = 0; 7207 ctsio->kern_data_len = alloc_len; 7208 ctsio->kern_total_len = alloc_len; 7209 } 7210 ctsio->kern_data_resid = 0; 7211 ctsio->kern_rel_offset = 0; 7212 7213 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7214 7215 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7216 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7217 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7218 &tp_desc_ptr1_1->desc_list[0]; 7219 7220 if (single == 0) { 7221 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7222 &tp_desc_ptr1_2->desc_list[0]; 7223 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7224 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7225 &tp_desc_ptr2_1->desc_list[0]; 7226 } else { 7227 tpg_desc_ptr2 = NULL; 7228 tp_desc_ptr2_1 = NULL; 7229 tp_desc_ptr2_2 = NULL; 7230 } 7231 7232 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7233 if (single == 0) { 7234 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7235 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7236 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7237 tpg_desc_ptr2->pref_state = 7238 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7239 } else { 7240 tpg_desc_ptr1->pref_state = 7241 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7242 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7243 } 7244 } else { 7245 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7246 tpg_desc_ptr1->pref_state = 7247 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7248 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7249 } else { 7250 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7251 tpg_desc_ptr2->pref_state = 7252 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7253 } 7254 } 7255 } else { 7256 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7257 } 7258 tpg_desc_ptr1->support = 0; 7259 tpg_desc_ptr1->target_port_group[1] = 1; 7260 tpg_desc_ptr1->status = TPG_IMPLICIT; 7261 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7262 7263 if (single == 0) { 7264 tpg_desc_ptr2->support = 0; 7265 tpg_desc_ptr2->target_port_group[1] = 2; 7266 tpg_desc_ptr2->status = TPG_IMPLICIT; 7267 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7268 7269 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7270 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7271 7272 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7273 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7274 } else { 7275 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7276 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7277 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7278 } else { 7279 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7280 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7281 } 7282 } 7283 7284 ctsio->be_move_done = ctl_config_move_done; 7285 7286 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7287 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7288 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7289 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7290 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7291 7292 ctl_datamove((union ctl_io *)ctsio); 7293 return(retval); 7294} 7295 7296int 7297ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7298{ 7299 struct scsi_per_res_in *cdb; 7300 int alloc_len, total_len = 0; 7301 /* struct scsi_per_res_in_rsrv in_data; */ 7302 struct ctl_lun *lun; 7303 struct ctl_softc *softc; 7304 7305 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7306 7307 softc = control_softc; 7308 7309 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7310 7311 alloc_len = scsi_2btoul(cdb->length); 7312 7313 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7314 7315retry: 7316 mtx_lock(&softc->ctl_lock); 7317 switch (cdb->action) { 7318 case SPRI_RK: /* read keys */ 7319 total_len = sizeof(struct scsi_per_res_in_keys) + 7320 lun->pr_key_count * 7321 sizeof(struct scsi_per_res_key); 7322 break; 7323 case SPRI_RR: /* read reservation */ 7324 if (lun->flags & CTL_LUN_PR_RESERVED) 7325 total_len = sizeof(struct scsi_per_res_in_rsrv); 7326 else 7327 total_len = sizeof(struct scsi_per_res_in_header); 7328 break; 7329 case SPRI_RC: /* report capabilities */ 7330 total_len = sizeof(struct scsi_per_res_cap); 7331 break; 7332 case SPRI_RS: /* read full status */ 7333 default: 7334 mtx_unlock(&softc->ctl_lock); 7335 ctl_set_invalid_field(ctsio, 7336 /*sks_valid*/ 1, 7337 /*command*/ 1, 7338 /*field*/ 1, 7339 /*bit_valid*/ 1, 7340 /*bit*/ 0); 7341 ctl_done((union ctl_io *)ctsio); 7342 return (CTL_RETVAL_COMPLETE); 7343 break; /* NOTREACHED */ 7344 } 7345 mtx_unlock(&softc->ctl_lock); 7346 7347 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7348 7349 if (total_len < alloc_len) { 7350 ctsio->residual = alloc_len - total_len; 7351 ctsio->kern_data_len = total_len; 7352 ctsio->kern_total_len = total_len; 7353 } else { 7354 ctsio->residual = 0; 7355 ctsio->kern_data_len = alloc_len; 7356 ctsio->kern_total_len = alloc_len; 7357 } 7358 7359 ctsio->kern_data_resid = 0; 7360 ctsio->kern_rel_offset = 0; 7361 ctsio->kern_sg_entries = 0; 7362 7363 mtx_lock(&softc->ctl_lock); 7364 switch (cdb->action) { 7365 case SPRI_RK: { // read keys 7366 struct scsi_per_res_in_keys *res_keys; 7367 int i, key_count; 7368 7369 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7370 7371 /* 7372 * We had to drop the lock to allocate our buffer, which 7373 * leaves time for someone to come in with another 7374 * persistent reservation. (That is unlikely, though, 7375 * since this should be the only persistent reservation 7376 * command active right now.) 7377 */ 7378 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7379 (lun->pr_key_count * 7380 sizeof(struct scsi_per_res_key)))){ 7381 mtx_unlock(&softc->ctl_lock); 7382 free(ctsio->kern_data_ptr, M_CTL); 7383 printf("%s: reservation length changed, retrying\n", 7384 __func__); 7385 goto retry; 7386 } 7387 7388 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7389 7390 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7391 lun->pr_key_count, res_keys->header.length); 7392 7393 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7394 if (!lun->per_res[i].registered) 7395 continue; 7396 7397 /* 7398 * We used lun->pr_key_count to calculate the 7399 * size to allocate. If it turns out the number of 7400 * initiators with the registered flag set is 7401 * larger than that (i.e. they haven't been kept in 7402 * sync), we've got a problem. 7403 */ 7404 if (key_count >= lun->pr_key_count) { 7405#ifdef NEEDTOPORT 7406 csevent_log(CSC_CTL | CSC_SHELF_SW | 7407 CTL_PR_ERROR, 7408 csevent_LogType_Fault, 7409 csevent_AlertLevel_Yellow, 7410 csevent_FRU_ShelfController, 7411 csevent_FRU_Firmware, 7412 csevent_FRU_Unknown, 7413 "registered keys %d >= key " 7414 "count %d", key_count, 7415 lun->pr_key_count); 7416#endif 7417 key_count++; 7418 continue; 7419 } 7420 memcpy(res_keys->keys[key_count].key, 7421 lun->per_res[i].res_key.key, 7422 ctl_min(sizeof(res_keys->keys[key_count].key), 7423 sizeof(lun->per_res[i].res_key))); 7424 key_count++; 7425 } 7426 break; 7427 } 7428 case SPRI_RR: { // read reservation 7429 struct scsi_per_res_in_rsrv *res; 7430 int tmp_len, header_only; 7431 7432 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7433 7434 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7435 7436 if (lun->flags & CTL_LUN_PR_RESERVED) 7437 { 7438 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7439 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7440 res->header.length); 7441 header_only = 0; 7442 } else { 7443 tmp_len = sizeof(struct scsi_per_res_in_header); 7444 scsi_ulto4b(0, res->header.length); 7445 header_only = 1; 7446 } 7447 7448 /* 7449 * We had to drop the lock to allocate our buffer, which 7450 * leaves time for someone to come in with another 7451 * persistent reservation. (That is unlikely, though, 7452 * since this should be the only persistent reservation 7453 * command active right now.) 7454 */ 7455 if (tmp_len != total_len) { 7456 mtx_unlock(&softc->ctl_lock); 7457 free(ctsio->kern_data_ptr, M_CTL); 7458 printf("%s: reservation status changed, retrying\n", 7459 __func__); 7460 goto retry; 7461 } 7462 7463 /* 7464 * No reservation held, so we're done. 7465 */ 7466 if (header_only != 0) 7467 break; 7468 7469 /* 7470 * If the registration is an All Registrants type, the key 7471 * is 0, since it doesn't really matter. 7472 */ 7473 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7474 memcpy(res->data.reservation, 7475 &lun->per_res[lun->pr_res_idx].res_key, 7476 sizeof(struct scsi_per_res_key)); 7477 } 7478 res->data.scopetype = lun->res_type; 7479 break; 7480 } 7481 case SPRI_RC: //report capabilities 7482 { 7483 struct scsi_per_res_cap *res_cap; 7484 uint16_t type_mask; 7485 7486 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7487 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7488 res_cap->flags2 |= SPRI_TMV; 7489 type_mask = SPRI_TM_WR_EX_AR | 7490 SPRI_TM_EX_AC_RO | 7491 SPRI_TM_WR_EX_RO | 7492 SPRI_TM_EX_AC | 7493 SPRI_TM_WR_EX | 7494 SPRI_TM_EX_AC_AR; 7495 scsi_ulto2b(type_mask, res_cap->type_mask); 7496 break; 7497 } 7498 case SPRI_RS: //read full status 7499 default: 7500 /* 7501 * This is a bug, because we just checked for this above, 7502 * and should have returned an error. 7503 */ 7504 panic("Invalid PR type %x", cdb->action); 7505 break; /* NOTREACHED */ 7506 } 7507 mtx_unlock(&softc->ctl_lock); 7508 7509 ctsio->be_move_done = ctl_config_move_done; 7510 7511 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7512 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7513 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7514 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7515 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7516 7517 ctl_datamove((union ctl_io *)ctsio); 7518 7519 return (CTL_RETVAL_COMPLETE); 7520} 7521 7522/* 7523 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7524 * it should return. 7525 */ 7526static int 7527ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7528 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7529 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7530 struct scsi_per_res_out_parms* param) 7531{ 7532 union ctl_ha_msg persis_io; 7533 int retval, i; 7534 int isc_retval; 7535 7536 retval = 0; 7537 7538 if (sa_res_key == 0) { 7539 mtx_lock(&softc->ctl_lock); 7540 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7541 /* validate scope and type */ 7542 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7543 SPR_LU_SCOPE) { 7544 mtx_unlock(&softc->ctl_lock); 7545 ctl_set_invalid_field(/*ctsio*/ ctsio, 7546 /*sks_valid*/ 1, 7547 /*command*/ 1, 7548 /*field*/ 2, 7549 /*bit_valid*/ 1, 7550 /*bit*/ 4); 7551 ctl_done((union ctl_io *)ctsio); 7552 return (1); 7553 } 7554 7555 if (type>8 || type==2 || type==4 || type==0) { 7556 mtx_unlock(&softc->ctl_lock); 7557 ctl_set_invalid_field(/*ctsio*/ ctsio, 7558 /*sks_valid*/ 1, 7559 /*command*/ 1, 7560 /*field*/ 2, 7561 /*bit_valid*/ 1, 7562 /*bit*/ 0); 7563 ctl_done((union ctl_io *)ctsio); 7564 return (1); 7565 } 7566 7567 /* temporarily unregister this nexus */ 7568 lun->per_res[residx].registered = 0; 7569 7570 /* 7571 * Unregister everybody else and build UA for 7572 * them 7573 */ 7574 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7575 if (lun->per_res[i].registered == 0) 7576 continue; 7577 7578 if (!persis_offset 7579 && i <CTL_MAX_INITIATORS) 7580 lun->pending_sense[i].ua_pending |= 7581 CTL_UA_REG_PREEMPT; 7582 else if (persis_offset 7583 && i >= persis_offset) 7584 lun->pending_sense[i-persis_offset 7585 ].ua_pending |= 7586 CTL_UA_REG_PREEMPT; 7587 lun->per_res[i].registered = 0; 7588 memset(&lun->per_res[i].res_key, 0, 7589 sizeof(struct scsi_per_res_key)); 7590 } 7591 lun->per_res[residx].registered = 1; 7592 lun->pr_key_count = 1; 7593 lun->res_type = type; 7594 if (lun->res_type != SPR_TYPE_WR_EX_AR 7595 && lun->res_type != SPR_TYPE_EX_AC_AR) 7596 lun->pr_res_idx = residx; 7597 7598 mtx_unlock(&softc->ctl_lock); 7599 /* send msg to other side */ 7600 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7601 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7602 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7603 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7604 persis_io.pr.pr_info.res_type = type; 7605 memcpy(persis_io.pr.pr_info.sa_res_key, 7606 param->serv_act_res_key, 7607 sizeof(param->serv_act_res_key)); 7608 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7609 &persis_io, sizeof(persis_io), 0)) > 7610 CTL_HA_STATUS_SUCCESS) { 7611 printf("CTL:Persis Out error returned " 7612 "from ctl_ha_msg_send %d\n", 7613 isc_retval); 7614 } 7615 } else { 7616 /* not all registrants */ 7617 mtx_unlock(&softc->ctl_lock); 7618 free(ctsio->kern_data_ptr, M_CTL); 7619 ctl_set_invalid_field(ctsio, 7620 /*sks_valid*/ 1, 7621 /*command*/ 0, 7622 /*field*/ 8, 7623 /*bit_valid*/ 0, 7624 /*bit*/ 0); 7625 ctl_done((union ctl_io *)ctsio); 7626 return (1); 7627 } 7628 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7629 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7630 int found = 0; 7631 7632 mtx_lock(&softc->ctl_lock); 7633 if (res_key == sa_res_key) { 7634 /* special case */ 7635 /* 7636 * The spec implies this is not good but doesn't 7637 * say what to do. There are two choices either 7638 * generate a res conflict or check condition 7639 * with illegal field in parameter data. Since 7640 * that is what is done when the sa_res_key is 7641 * zero I'll take that approach since this has 7642 * to do with the sa_res_key. 7643 */ 7644 mtx_unlock(&softc->ctl_lock); 7645 free(ctsio->kern_data_ptr, M_CTL); 7646 ctl_set_invalid_field(ctsio, 7647 /*sks_valid*/ 1, 7648 /*command*/ 0, 7649 /*field*/ 8, 7650 /*bit_valid*/ 0, 7651 /*bit*/ 0); 7652 ctl_done((union ctl_io *)ctsio); 7653 return (1); 7654 } 7655 7656 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7657 if (lun->per_res[i].registered 7658 && memcmp(param->serv_act_res_key, 7659 lun->per_res[i].res_key.key, 7660 sizeof(struct scsi_per_res_key)) != 0) 7661 continue; 7662 7663 found = 1; 7664 lun->per_res[i].registered = 0; 7665 memset(&lun->per_res[i].res_key, 0, 7666 sizeof(struct scsi_per_res_key)); 7667 lun->pr_key_count--; 7668 7669 if (!persis_offset 7670 && i < CTL_MAX_INITIATORS) 7671 lun->pending_sense[i].ua_pending |= 7672 CTL_UA_REG_PREEMPT; 7673 else if (persis_offset 7674 && i >= persis_offset) 7675 lun->pending_sense[i-persis_offset].ua_pending|= 7676 CTL_UA_REG_PREEMPT; 7677 } 7678 mtx_unlock(&softc->ctl_lock); 7679 if (!found) { 7680 free(ctsio->kern_data_ptr, M_CTL); 7681 ctl_set_reservation_conflict(ctsio); 7682 ctl_done((union ctl_io *)ctsio); 7683 return (CTL_RETVAL_COMPLETE); 7684 } 7685 /* send msg to other side */ 7686 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7687 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7688 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7689 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7690 persis_io.pr.pr_info.res_type = type; 7691 memcpy(persis_io.pr.pr_info.sa_res_key, 7692 param->serv_act_res_key, 7693 sizeof(param->serv_act_res_key)); 7694 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7695 &persis_io, sizeof(persis_io), 0)) > 7696 CTL_HA_STATUS_SUCCESS) { 7697 printf("CTL:Persis Out error returned from " 7698 "ctl_ha_msg_send %d\n", isc_retval); 7699 } 7700 } else { 7701 /* Reserved but not all registrants */ 7702 /* sa_res_key is res holder */ 7703 if (memcmp(param->serv_act_res_key, 7704 lun->per_res[lun->pr_res_idx].res_key.key, 7705 sizeof(struct scsi_per_res_key)) == 0) { 7706 /* validate scope and type */ 7707 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7708 SPR_LU_SCOPE) { 7709 ctl_set_invalid_field(/*ctsio*/ ctsio, 7710 /*sks_valid*/ 1, 7711 /*command*/ 1, 7712 /*field*/ 2, 7713 /*bit_valid*/ 1, 7714 /*bit*/ 4); 7715 ctl_done((union ctl_io *)ctsio); 7716 return (1); 7717 } 7718 7719 if (type>8 || type==2 || type==4 || type==0) { 7720 ctl_set_invalid_field(/*ctsio*/ ctsio, 7721 /*sks_valid*/ 1, 7722 /*command*/ 1, 7723 /*field*/ 2, 7724 /*bit_valid*/ 1, 7725 /*bit*/ 0); 7726 ctl_done((union ctl_io *)ctsio); 7727 return (1); 7728 } 7729 7730 /* 7731 * Do the following: 7732 * if sa_res_key != res_key remove all 7733 * registrants w/sa_res_key and generate UA 7734 * for these registrants(Registrations 7735 * Preempted) if it wasn't an exclusive 7736 * reservation generate UA(Reservations 7737 * Preempted) for all other registered nexuses 7738 * if the type has changed. Establish the new 7739 * reservation and holder. If res_key and 7740 * sa_res_key are the same do the above 7741 * except don't unregister the res holder. 7742 */ 7743 7744 /* 7745 * Temporarily unregister so it won't get 7746 * removed or UA generated 7747 */ 7748 lun->per_res[residx].registered = 0; 7749 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7750 if (lun->per_res[i].registered == 0) 7751 continue; 7752 7753 if (memcmp(param->serv_act_res_key, 7754 lun->per_res[i].res_key.key, 7755 sizeof(struct scsi_per_res_key)) == 0) { 7756 lun->per_res[i].registered = 0; 7757 memset(&lun->per_res[i].res_key, 7758 0, 7759 sizeof(struct scsi_per_res_key)); 7760 lun->pr_key_count--; 7761 7762 if (!persis_offset 7763 && i < CTL_MAX_INITIATORS) 7764 lun->pending_sense[i 7765 ].ua_pending |= 7766 CTL_UA_REG_PREEMPT; 7767 else if (persis_offset 7768 && i >= persis_offset) 7769 lun->pending_sense[ 7770 i-persis_offset].ua_pending |= 7771 CTL_UA_REG_PREEMPT; 7772 } else if (type != lun->res_type 7773 && (lun->res_type == SPR_TYPE_WR_EX_RO 7774 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7775 if (!persis_offset 7776 && i < CTL_MAX_INITIATORS) 7777 lun->pending_sense[i 7778 ].ua_pending |= 7779 CTL_UA_RES_RELEASE; 7780 else if (persis_offset 7781 && i >= persis_offset) 7782 lun->pending_sense[ 7783 i-persis_offset 7784 ].ua_pending |= 7785 CTL_UA_RES_RELEASE; 7786 } 7787 } 7788 lun->per_res[residx].registered = 1; 7789 lun->res_type = type; 7790 if (lun->res_type != SPR_TYPE_WR_EX_AR 7791 && lun->res_type != SPR_TYPE_EX_AC_AR) 7792 lun->pr_res_idx = residx; 7793 else 7794 lun->pr_res_idx = 7795 CTL_PR_ALL_REGISTRANTS; 7796 7797 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7798 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7799 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7800 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7801 persis_io.pr.pr_info.res_type = type; 7802 memcpy(persis_io.pr.pr_info.sa_res_key, 7803 param->serv_act_res_key, 7804 sizeof(param->serv_act_res_key)); 7805 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7806 &persis_io, sizeof(persis_io), 0)) > 7807 CTL_HA_STATUS_SUCCESS) { 7808 printf("CTL:Persis Out error returned " 7809 "from ctl_ha_msg_send %d\n", 7810 isc_retval); 7811 } 7812 } else { 7813 /* 7814 * sa_res_key is not the res holder just 7815 * remove registrants 7816 */ 7817 int found=0; 7818 mtx_lock(&softc->ctl_lock); 7819 7820 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7821 if (memcmp(param->serv_act_res_key, 7822 lun->per_res[i].res_key.key, 7823 sizeof(struct scsi_per_res_key)) != 0) 7824 continue; 7825 7826 found = 1; 7827 lun->per_res[i].registered = 0; 7828 memset(&lun->per_res[i].res_key, 0, 7829 sizeof(struct scsi_per_res_key)); 7830 lun->pr_key_count--; 7831 7832 if (!persis_offset 7833 && i < CTL_MAX_INITIATORS) 7834 lun->pending_sense[i].ua_pending |= 7835 CTL_UA_REG_PREEMPT; 7836 else if (persis_offset 7837 && i >= persis_offset) 7838 lun->pending_sense[ 7839 i-persis_offset].ua_pending |= 7840 CTL_UA_REG_PREEMPT; 7841 } 7842 7843 if (!found) { 7844 mtx_unlock(&softc->ctl_lock); 7845 free(ctsio->kern_data_ptr, M_CTL); 7846 ctl_set_reservation_conflict(ctsio); 7847 ctl_done((union ctl_io *)ctsio); 7848 return (1); 7849 } 7850 mtx_unlock(&softc->ctl_lock); 7851 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7852 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7853 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7854 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7855 persis_io.pr.pr_info.res_type = type; 7856 memcpy(persis_io.pr.pr_info.sa_res_key, 7857 param->serv_act_res_key, 7858 sizeof(param->serv_act_res_key)); 7859 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7860 &persis_io, sizeof(persis_io), 0)) > 7861 CTL_HA_STATUS_SUCCESS) { 7862 printf("CTL:Persis Out error returned " 7863 "from ctl_ha_msg_send %d\n", 7864 isc_retval); 7865 } 7866 } 7867 } 7868 7869 lun->PRGeneration++; 7870 7871 return (retval); 7872} 7873 7874static void 7875ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7876{ 7877 int i; 7878 7879 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7880 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7881 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7882 msg->pr.pr_info.sa_res_key, 7883 sizeof(struct scsi_per_res_key)) != 0) { 7884 uint64_t sa_res_key; 7885 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7886 7887 if (sa_res_key == 0) { 7888 /* temporarily unregister this nexus */ 7889 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7890 7891 /* 7892 * Unregister everybody else and build UA for 7893 * them 7894 */ 7895 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7896 if (lun->per_res[i].registered == 0) 7897 continue; 7898 7899 if (!persis_offset 7900 && i < CTL_MAX_INITIATORS) 7901 lun->pending_sense[i].ua_pending |= 7902 CTL_UA_REG_PREEMPT; 7903 else if (persis_offset && i >= persis_offset) 7904 lun->pending_sense[i - 7905 persis_offset].ua_pending |= 7906 CTL_UA_REG_PREEMPT; 7907 lun->per_res[i].registered = 0; 7908 memset(&lun->per_res[i].res_key, 0, 7909 sizeof(struct scsi_per_res_key)); 7910 } 7911 7912 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7913 lun->pr_key_count = 1; 7914 lun->res_type = msg->pr.pr_info.res_type; 7915 if (lun->res_type != SPR_TYPE_WR_EX_AR 7916 && lun->res_type != SPR_TYPE_EX_AC_AR) 7917 lun->pr_res_idx = msg->pr.pr_info.residx; 7918 } else { 7919 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7920 if (memcmp(msg->pr.pr_info.sa_res_key, 7921 lun->per_res[i].res_key.key, 7922 sizeof(struct scsi_per_res_key)) != 0) 7923 continue; 7924 7925 lun->per_res[i].registered = 0; 7926 memset(&lun->per_res[i].res_key, 0, 7927 sizeof(struct scsi_per_res_key)); 7928 lun->pr_key_count--; 7929 7930 if (!persis_offset 7931 && i < persis_offset) 7932 lun->pending_sense[i].ua_pending |= 7933 CTL_UA_REG_PREEMPT; 7934 else if (persis_offset 7935 && i >= persis_offset) 7936 lun->pending_sense[i - 7937 persis_offset].ua_pending |= 7938 CTL_UA_REG_PREEMPT; 7939 } 7940 } 7941 } else { 7942 /* 7943 * Temporarily unregister so it won't get removed 7944 * or UA generated 7945 */ 7946 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7947 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7948 if (lun->per_res[i].registered == 0) 7949 continue; 7950 7951 if (memcmp(msg->pr.pr_info.sa_res_key, 7952 lun->per_res[i].res_key.key, 7953 sizeof(struct scsi_per_res_key)) == 0) { 7954 lun->per_res[i].registered = 0; 7955 memset(&lun->per_res[i].res_key, 0, 7956 sizeof(struct scsi_per_res_key)); 7957 lun->pr_key_count--; 7958 if (!persis_offset 7959 && i < CTL_MAX_INITIATORS) 7960 lun->pending_sense[i].ua_pending |= 7961 CTL_UA_REG_PREEMPT; 7962 else if (persis_offset 7963 && i >= persis_offset) 7964 lun->pending_sense[i - 7965 persis_offset].ua_pending |= 7966 CTL_UA_REG_PREEMPT; 7967 } else if (msg->pr.pr_info.res_type != lun->res_type 7968 && (lun->res_type == SPR_TYPE_WR_EX_RO 7969 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7970 if (!persis_offset 7971 && i < persis_offset) 7972 lun->pending_sense[i 7973 ].ua_pending |= 7974 CTL_UA_RES_RELEASE; 7975 else if (persis_offset 7976 && i >= persis_offset) 7977 lun->pending_sense[i - 7978 persis_offset].ua_pending |= 7979 CTL_UA_RES_RELEASE; 7980 } 7981 } 7982 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7983 lun->res_type = msg->pr.pr_info.res_type; 7984 if (lun->res_type != SPR_TYPE_WR_EX_AR 7985 && lun->res_type != SPR_TYPE_EX_AC_AR) 7986 lun->pr_res_idx = msg->pr.pr_info.residx; 7987 else 7988 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7989 } 7990 lun->PRGeneration++; 7991 7992} 7993 7994 7995int 7996ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7997{ 7998 int retval; 7999 int isc_retval; 8000 u_int32_t param_len; 8001 struct scsi_per_res_out *cdb; 8002 struct ctl_lun *lun; 8003 struct scsi_per_res_out_parms* param; 8004 struct ctl_softc *softc; 8005 uint32_t residx; 8006 uint64_t res_key, sa_res_key; 8007 uint8_t type; 8008 union ctl_ha_msg persis_io; 8009 int i; 8010 8011 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 8012 8013 retval = CTL_RETVAL_COMPLETE; 8014 8015 softc = control_softc; 8016 8017 cdb = (struct scsi_per_res_out *)ctsio->cdb; 8018 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8019 8020 /* 8021 * We only support whole-LUN scope. The scope & type are ignored for 8022 * register, register and ignore existing key and clear. 8023 * We sometimes ignore scope and type on preempts too!! 8024 * Verify reservation type here as well. 8025 */ 8026 type = cdb->scope_type & SPR_TYPE_MASK; 8027 if ((cdb->action == SPRO_RESERVE) 8028 || (cdb->action == SPRO_RELEASE)) { 8029 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 8030 ctl_set_invalid_field(/*ctsio*/ ctsio, 8031 /*sks_valid*/ 1, 8032 /*command*/ 1, 8033 /*field*/ 2, 8034 /*bit_valid*/ 1, 8035 /*bit*/ 4); 8036 ctl_done((union ctl_io *)ctsio); 8037 return (CTL_RETVAL_COMPLETE); 8038 } 8039 8040 if (type>8 || type==2 || type==4 || type==0) { 8041 ctl_set_invalid_field(/*ctsio*/ ctsio, 8042 /*sks_valid*/ 1, 8043 /*command*/ 1, 8044 /*field*/ 2, 8045 /*bit_valid*/ 1, 8046 /*bit*/ 0); 8047 ctl_done((union ctl_io *)ctsio); 8048 return (CTL_RETVAL_COMPLETE); 8049 } 8050 } 8051 8052 switch (cdb->action & SPRO_ACTION_MASK) { 8053 case SPRO_REGISTER: 8054 case SPRO_RESERVE: 8055 case SPRO_RELEASE: 8056 case SPRO_CLEAR: 8057 case SPRO_PREEMPT: 8058 case SPRO_REG_IGNO: 8059 break; 8060 case SPRO_REG_MOVE: 8061 case SPRO_PRE_ABO: 8062 default: 8063 ctl_set_invalid_field(/*ctsio*/ ctsio, 8064 /*sks_valid*/ 1, 8065 /*command*/ 1, 8066 /*field*/ 1, 8067 /*bit_valid*/ 1, 8068 /*bit*/ 0); 8069 ctl_done((union ctl_io *)ctsio); 8070 return (CTL_RETVAL_COMPLETE); 8071 break; /* NOTREACHED */ 8072 } 8073 8074 param_len = scsi_4btoul(cdb->length); 8075 8076 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 8077 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 8078 ctsio->kern_data_len = param_len; 8079 ctsio->kern_total_len = param_len; 8080 ctsio->kern_data_resid = 0; 8081 ctsio->kern_rel_offset = 0; 8082 ctsio->kern_sg_entries = 0; 8083 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 8084 ctsio->be_move_done = ctl_config_move_done; 8085 ctl_datamove((union ctl_io *)ctsio); 8086 8087 return (CTL_RETVAL_COMPLETE); 8088 } 8089 8090 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 8091 8092 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8093 res_key = scsi_8btou64(param->res_key.key); 8094 sa_res_key = scsi_8btou64(param->serv_act_res_key); 8095 8096 /* 8097 * Validate the reservation key here except for SPRO_REG_IGNO 8098 * This must be done for all other service actions 8099 */ 8100 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8101 mtx_lock(&softc->ctl_lock); 8102 if (lun->per_res[residx].registered) { 8103 if (memcmp(param->res_key.key, 8104 lun->per_res[residx].res_key.key, 8105 ctl_min(sizeof(param->res_key), 8106 sizeof(lun->per_res[residx].res_key))) != 0) { 8107 /* 8108 * The current key passed in doesn't match 8109 * the one the initiator previously 8110 * registered. 8111 */ 8112 mtx_unlock(&softc->ctl_lock); 8113 free(ctsio->kern_data_ptr, M_CTL); 8114 ctl_set_reservation_conflict(ctsio); 8115 ctl_done((union ctl_io *)ctsio); 8116 return (CTL_RETVAL_COMPLETE); 8117 } 8118 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8119 /* 8120 * We are not registered 8121 */ 8122 mtx_unlock(&softc->ctl_lock); 8123 free(ctsio->kern_data_ptr, M_CTL); 8124 ctl_set_reservation_conflict(ctsio); 8125 ctl_done((union ctl_io *)ctsio); 8126 return (CTL_RETVAL_COMPLETE); 8127 } else if (res_key != 0) { 8128 /* 8129 * We are not registered and trying to register but 8130 * the register key isn't zero. 8131 */ 8132 mtx_unlock(&softc->ctl_lock); 8133 free(ctsio->kern_data_ptr, M_CTL); 8134 ctl_set_reservation_conflict(ctsio); 8135 ctl_done((union ctl_io *)ctsio); 8136 return (CTL_RETVAL_COMPLETE); 8137 } 8138 mtx_unlock(&softc->ctl_lock); 8139 } 8140 8141 switch (cdb->action & SPRO_ACTION_MASK) { 8142 case SPRO_REGISTER: 8143 case SPRO_REG_IGNO: { 8144 8145#if 0 8146 printf("Registration received\n"); 8147#endif 8148 8149 /* 8150 * We don't support any of these options, as we report in 8151 * the read capabilities request (see 8152 * ctl_persistent_reserve_in(), above). 8153 */ 8154 if ((param->flags & SPR_SPEC_I_PT) 8155 || (param->flags & SPR_ALL_TG_PT) 8156 || (param->flags & SPR_APTPL)) { 8157 int bit_ptr; 8158 8159 if (param->flags & SPR_APTPL) 8160 bit_ptr = 0; 8161 else if (param->flags & SPR_ALL_TG_PT) 8162 bit_ptr = 2; 8163 else /* SPR_SPEC_I_PT */ 8164 bit_ptr = 3; 8165 8166 free(ctsio->kern_data_ptr, M_CTL); 8167 ctl_set_invalid_field(ctsio, 8168 /*sks_valid*/ 1, 8169 /*command*/ 0, 8170 /*field*/ 20, 8171 /*bit_valid*/ 1, 8172 /*bit*/ bit_ptr); 8173 ctl_done((union ctl_io *)ctsio); 8174 return (CTL_RETVAL_COMPLETE); 8175 } 8176 8177 mtx_lock(&softc->ctl_lock); 8178 8179 /* 8180 * The initiator wants to clear the 8181 * key/unregister. 8182 */ 8183 if (sa_res_key == 0) { 8184 if ((res_key == 0 8185 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8186 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8187 && !lun->per_res[residx].registered)) { 8188 mtx_unlock(&softc->ctl_lock); 8189 goto done; 8190 } 8191 8192 lun->per_res[residx].registered = 0; 8193 memset(&lun->per_res[residx].res_key, 8194 0, sizeof(lun->per_res[residx].res_key)); 8195 lun->pr_key_count--; 8196 8197 if (residx == lun->pr_res_idx) { 8198 lun->flags &= ~CTL_LUN_PR_RESERVED; 8199 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8200 8201 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8202 || lun->res_type == SPR_TYPE_EX_AC_RO) 8203 && lun->pr_key_count) { 8204 /* 8205 * If the reservation is a registrants 8206 * only type we need to generate a UA 8207 * for other registered inits. The 8208 * sense code should be RESERVATIONS 8209 * RELEASED 8210 */ 8211 8212 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8213 if (lun->per_res[ 8214 i+persis_offset].registered 8215 == 0) 8216 continue; 8217 lun->pending_sense[i 8218 ].ua_pending |= 8219 CTL_UA_RES_RELEASE; 8220 } 8221 } 8222 lun->res_type = 0; 8223 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8224 if (lun->pr_key_count==0) { 8225 lun->flags &= ~CTL_LUN_PR_RESERVED; 8226 lun->res_type = 0; 8227 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8228 } 8229 } 8230 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8231 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8232 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8233 persis_io.pr.pr_info.residx = residx; 8234 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8235 &persis_io, sizeof(persis_io), 0 )) > 8236 CTL_HA_STATUS_SUCCESS) { 8237 printf("CTL:Persis Out error returned from " 8238 "ctl_ha_msg_send %d\n", isc_retval); 8239 } 8240 mtx_unlock(&softc->ctl_lock); 8241 } else /* sa_res_key != 0 */ { 8242 8243 /* 8244 * If we aren't registered currently then increment 8245 * the key count and set the registered flag. 8246 */ 8247 if (!lun->per_res[residx].registered) { 8248 lun->pr_key_count++; 8249 lun->per_res[residx].registered = 1; 8250 } 8251 8252 memcpy(&lun->per_res[residx].res_key, 8253 param->serv_act_res_key, 8254 ctl_min(sizeof(param->serv_act_res_key), 8255 sizeof(lun->per_res[residx].res_key))); 8256 8257 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8258 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8259 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8260 persis_io.pr.pr_info.residx = residx; 8261 memcpy(persis_io.pr.pr_info.sa_res_key, 8262 param->serv_act_res_key, 8263 sizeof(param->serv_act_res_key)); 8264 mtx_unlock(&softc->ctl_lock); 8265 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8266 &persis_io, sizeof(persis_io), 0)) > 8267 CTL_HA_STATUS_SUCCESS) { 8268 printf("CTL:Persis Out error returned from " 8269 "ctl_ha_msg_send %d\n", isc_retval); 8270 } 8271 } 8272 lun->PRGeneration++; 8273 8274 break; 8275 } 8276 case SPRO_RESERVE: 8277#if 0 8278 printf("Reserve executed type %d\n", type); 8279#endif 8280 mtx_lock(&softc->ctl_lock); 8281 if (lun->flags & CTL_LUN_PR_RESERVED) { 8282 /* 8283 * if this isn't the reservation holder and it's 8284 * not a "all registrants" type or if the type is 8285 * different then we have a conflict 8286 */ 8287 if ((lun->pr_res_idx != residx 8288 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8289 || lun->res_type != type) { 8290 mtx_unlock(&softc->ctl_lock); 8291 free(ctsio->kern_data_ptr, M_CTL); 8292 ctl_set_reservation_conflict(ctsio); 8293 ctl_done((union ctl_io *)ctsio); 8294 return (CTL_RETVAL_COMPLETE); 8295 } 8296 mtx_unlock(&softc->ctl_lock); 8297 } else /* create a reservation */ { 8298 /* 8299 * If it's not an "all registrants" type record 8300 * reservation holder 8301 */ 8302 if (type != SPR_TYPE_WR_EX_AR 8303 && type != SPR_TYPE_EX_AC_AR) 8304 lun->pr_res_idx = residx; /* Res holder */ 8305 else 8306 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8307 8308 lun->flags |= CTL_LUN_PR_RESERVED; 8309 lun->res_type = type; 8310 8311 mtx_unlock(&softc->ctl_lock); 8312 8313 /* send msg to other side */ 8314 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8315 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8316 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8317 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8318 persis_io.pr.pr_info.res_type = type; 8319 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8320 &persis_io, sizeof(persis_io), 0)) > 8321 CTL_HA_STATUS_SUCCESS) { 8322 printf("CTL:Persis Out error returned from " 8323 "ctl_ha_msg_send %d\n", isc_retval); 8324 } 8325 } 8326 break; 8327 8328 case SPRO_RELEASE: 8329 mtx_lock(&softc->ctl_lock); 8330 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8331 /* No reservation exists return good status */ 8332 mtx_unlock(&softc->ctl_lock); 8333 goto done; 8334 } 8335 /* 8336 * Is this nexus a reservation holder? 8337 */ 8338 if (lun->pr_res_idx != residx 8339 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8340 /* 8341 * not a res holder return good status but 8342 * do nothing 8343 */ 8344 mtx_unlock(&softc->ctl_lock); 8345 goto done; 8346 } 8347 8348 if (lun->res_type != type) { 8349 mtx_unlock(&softc->ctl_lock); 8350 free(ctsio->kern_data_ptr, M_CTL); 8351 ctl_set_illegal_pr_release(ctsio); 8352 ctl_done((union ctl_io *)ctsio); 8353 return (CTL_RETVAL_COMPLETE); 8354 } 8355 8356 /* okay to release */ 8357 lun->flags &= ~CTL_LUN_PR_RESERVED; 8358 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8359 lun->res_type = 0; 8360 8361 /* 8362 * if this isn't an exclusive access 8363 * res generate UA for all other 8364 * registrants. 8365 */ 8366 if (type != SPR_TYPE_EX_AC 8367 && type != SPR_TYPE_WR_EX) { 8368 /* 8369 * temporarily unregister so we don't generate UA 8370 */ 8371 lun->per_res[residx].registered = 0; 8372 8373 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8374 if (lun->per_res[i+persis_offset].registered 8375 == 0) 8376 continue; 8377 lun->pending_sense[i].ua_pending |= 8378 CTL_UA_RES_RELEASE; 8379 } 8380 8381 lun->per_res[residx].registered = 1; 8382 } 8383 mtx_unlock(&softc->ctl_lock); 8384 /* Send msg to other side */ 8385 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8386 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8387 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8388 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8389 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8390 printf("CTL:Persis Out error returned from " 8391 "ctl_ha_msg_send %d\n", isc_retval); 8392 } 8393 break; 8394 8395 case SPRO_CLEAR: 8396 /* send msg to other side */ 8397 8398 mtx_lock(&softc->ctl_lock); 8399 lun->flags &= ~CTL_LUN_PR_RESERVED; 8400 lun->res_type = 0; 8401 lun->pr_key_count = 0; 8402 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8403 8404 8405 memset(&lun->per_res[residx].res_key, 8406 0, sizeof(lun->per_res[residx].res_key)); 8407 lun->per_res[residx].registered = 0; 8408 8409 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8410 if (lun->per_res[i].registered) { 8411 if (!persis_offset && i < CTL_MAX_INITIATORS) 8412 lun->pending_sense[i].ua_pending |= 8413 CTL_UA_RES_PREEMPT; 8414 else if (persis_offset && i >= persis_offset) 8415 lun->pending_sense[i-persis_offset 8416 ].ua_pending |= CTL_UA_RES_PREEMPT; 8417 8418 memset(&lun->per_res[i].res_key, 8419 0, sizeof(struct scsi_per_res_key)); 8420 lun->per_res[i].registered = 0; 8421 } 8422 lun->PRGeneration++; 8423 mtx_unlock(&softc->ctl_lock); 8424 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8425 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8426 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8427 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8428 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8429 printf("CTL:Persis Out error returned from " 8430 "ctl_ha_msg_send %d\n", isc_retval); 8431 } 8432 break; 8433 8434 case SPRO_PREEMPT: { 8435 int nretval; 8436 8437 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8438 residx, ctsio, cdb, param); 8439 if (nretval != 0) 8440 return (CTL_RETVAL_COMPLETE); 8441 break; 8442 } 8443 case SPRO_REG_MOVE: 8444 case SPRO_PRE_ABO: 8445 default: 8446 free(ctsio->kern_data_ptr, M_CTL); 8447 ctl_set_invalid_field(/*ctsio*/ ctsio, 8448 /*sks_valid*/ 1, 8449 /*command*/ 1, 8450 /*field*/ 1, 8451 /*bit_valid*/ 1, 8452 /*bit*/ 0); 8453 ctl_done((union ctl_io *)ctsio); 8454 return (CTL_RETVAL_COMPLETE); 8455 break; /* NOTREACHED */ 8456 } 8457 8458done: 8459 free(ctsio->kern_data_ptr, M_CTL); 8460 ctl_set_success(ctsio); 8461 ctl_done((union ctl_io *)ctsio); 8462 8463 return (retval); 8464} 8465 8466/* 8467 * This routine is for handling a message from the other SC pertaining to 8468 * persistent reserve out. All the error checking will have been done 8469 * so only perorming the action need be done here to keep the two 8470 * in sync. 8471 */ 8472static void 8473ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8474{ 8475 struct ctl_lun *lun; 8476 struct ctl_softc *softc; 8477 int i; 8478 uint32_t targ_lun; 8479 8480 softc = control_softc; 8481 8482 mtx_lock(&softc->ctl_lock); 8483 8484 targ_lun = msg->hdr.nexus.targ_lun; 8485 if (msg->hdr.nexus.lun_map_fn != NULL) 8486 targ_lun = msg->hdr.nexus.lun_map_fn(msg->hdr.nexus.lun_map_arg, targ_lun); 8487 lun = softc->ctl_luns[targ_lun]; 8488 switch(msg->pr.pr_info.action) { 8489 case CTL_PR_REG_KEY: 8490 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8491 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8492 lun->pr_key_count++; 8493 } 8494 lun->PRGeneration++; 8495 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8496 msg->pr.pr_info.sa_res_key, 8497 sizeof(struct scsi_per_res_key)); 8498 break; 8499 8500 case CTL_PR_UNREG_KEY: 8501 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8502 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8503 0, sizeof(struct scsi_per_res_key)); 8504 lun->pr_key_count--; 8505 8506 /* XXX Need to see if the reservation has been released */ 8507 /* if so do we need to generate UA? */ 8508 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8509 lun->flags &= ~CTL_LUN_PR_RESERVED; 8510 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8511 8512 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8513 || lun->res_type == SPR_TYPE_EX_AC_RO) 8514 && lun->pr_key_count) { 8515 /* 8516 * If the reservation is a registrants 8517 * only type we need to generate a UA 8518 * for other registered inits. The 8519 * sense code should be RESERVATIONS 8520 * RELEASED 8521 */ 8522 8523 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8524 if (lun->per_res[i+ 8525 persis_offset].registered == 0) 8526 continue; 8527 8528 lun->pending_sense[i 8529 ].ua_pending |= 8530 CTL_UA_RES_RELEASE; 8531 } 8532 } 8533 lun->res_type = 0; 8534 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8535 if (lun->pr_key_count==0) { 8536 lun->flags &= ~CTL_LUN_PR_RESERVED; 8537 lun->res_type = 0; 8538 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8539 } 8540 } 8541 lun->PRGeneration++; 8542 break; 8543 8544 case CTL_PR_RESERVE: 8545 lun->flags |= CTL_LUN_PR_RESERVED; 8546 lun->res_type = msg->pr.pr_info.res_type; 8547 lun->pr_res_idx = msg->pr.pr_info.residx; 8548 8549 break; 8550 8551 case CTL_PR_RELEASE: 8552 /* 8553 * if this isn't an exclusive access res generate UA for all 8554 * other registrants. 8555 */ 8556 if (lun->res_type != SPR_TYPE_EX_AC 8557 && lun->res_type != SPR_TYPE_WR_EX) { 8558 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8559 if (lun->per_res[i+persis_offset].registered) 8560 lun->pending_sense[i].ua_pending |= 8561 CTL_UA_RES_RELEASE; 8562 } 8563 8564 lun->flags &= ~CTL_LUN_PR_RESERVED; 8565 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8566 lun->res_type = 0; 8567 break; 8568 8569 case CTL_PR_PREEMPT: 8570 ctl_pro_preempt_other(lun, msg); 8571 break; 8572 case CTL_PR_CLEAR: 8573 lun->flags &= ~CTL_LUN_PR_RESERVED; 8574 lun->res_type = 0; 8575 lun->pr_key_count = 0; 8576 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8577 8578 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8579 if (lun->per_res[i].registered == 0) 8580 continue; 8581 if (!persis_offset 8582 && i < CTL_MAX_INITIATORS) 8583 lun->pending_sense[i].ua_pending |= 8584 CTL_UA_RES_PREEMPT; 8585 else if (persis_offset 8586 && i >= persis_offset) 8587 lun->pending_sense[i-persis_offset].ua_pending|= 8588 CTL_UA_RES_PREEMPT; 8589 memset(&lun->per_res[i].res_key, 0, 8590 sizeof(struct scsi_per_res_key)); 8591 lun->per_res[i].registered = 0; 8592 } 8593 lun->PRGeneration++; 8594 break; 8595 } 8596 8597 mtx_unlock(&softc->ctl_lock); 8598} 8599 8600int 8601ctl_read_write(struct ctl_scsiio *ctsio) 8602{ 8603 struct ctl_lun *lun; 8604 struct ctl_lba_len_flags *lbalen; 8605 uint64_t lba; 8606 uint32_t num_blocks; 8607 int reladdr, fua, dpo, ebp; 8608 int retval; 8609 int isread; 8610 8611 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8612 8613 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8614 8615 reladdr = 0; 8616 fua = 0; 8617 dpo = 0; 8618 ebp = 0; 8619 8620 retval = CTL_RETVAL_COMPLETE; 8621 8622 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8623 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8624 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8625 uint32_t residx; 8626 8627 /* 8628 * XXX KDM need a lock here. 8629 */ 8630 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8631 if ((lun->res_type == SPR_TYPE_EX_AC 8632 && residx != lun->pr_res_idx) 8633 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8634 || lun->res_type == SPR_TYPE_EX_AC_AR) 8635 && !lun->per_res[residx].registered)) { 8636 ctl_set_reservation_conflict(ctsio); 8637 ctl_done((union ctl_io *)ctsio); 8638 return (CTL_RETVAL_COMPLETE); 8639 } 8640 } 8641 8642 switch (ctsio->cdb[0]) { 8643 case READ_6: 8644 case WRITE_6: { 8645 struct scsi_rw_6 *cdb; 8646 8647 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8648 8649 lba = scsi_3btoul(cdb->addr); 8650 /* only 5 bits are valid in the most significant address byte */ 8651 lba &= 0x1fffff; 8652 num_blocks = cdb->length; 8653 /* 8654 * This is correct according to SBC-2. 8655 */ 8656 if (num_blocks == 0) 8657 num_blocks = 256; 8658 break; 8659 } 8660 case READ_10: 8661 case WRITE_10: { 8662 struct scsi_rw_10 *cdb; 8663 8664 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8665 8666 if (cdb->byte2 & SRW10_RELADDR) 8667 reladdr = 1; 8668 if (cdb->byte2 & SRW10_FUA) 8669 fua = 1; 8670 if (cdb->byte2 & SRW10_DPO) 8671 dpo = 1; 8672 8673 if ((cdb->opcode == WRITE_10) 8674 && (cdb->byte2 & SRW10_EBP)) 8675 ebp = 1; 8676 8677 lba = scsi_4btoul(cdb->addr); 8678 num_blocks = scsi_2btoul(cdb->length); 8679 break; 8680 } 8681 case WRITE_VERIFY_10: { 8682 struct scsi_write_verify_10 *cdb; 8683 8684 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8685 8686 /* 8687 * XXX KDM we should do actual write verify support at some 8688 * point. This is obviously fake, we're just translating 8689 * things to a write. So we don't even bother checking the 8690 * BYTCHK field, since we don't do any verification. If 8691 * the user asks for it, we'll just pretend we did it. 8692 */ 8693 if (cdb->byte2 & SWV_DPO) 8694 dpo = 1; 8695 8696 lba = scsi_4btoul(cdb->addr); 8697 num_blocks = scsi_2btoul(cdb->length); 8698 break; 8699 } 8700 case READ_12: 8701 case WRITE_12: { 8702 struct scsi_rw_12 *cdb; 8703 8704 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8705 8706 if (cdb->byte2 & SRW12_RELADDR) 8707 reladdr = 1; 8708 if (cdb->byte2 & SRW12_FUA) 8709 fua = 1; 8710 if (cdb->byte2 & SRW12_DPO) 8711 dpo = 1; 8712 lba = scsi_4btoul(cdb->addr); 8713 num_blocks = scsi_4btoul(cdb->length); 8714 break; 8715 } 8716 case WRITE_VERIFY_12: { 8717 struct scsi_write_verify_12 *cdb; 8718 8719 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8720 8721 if (cdb->byte2 & SWV_DPO) 8722 dpo = 1; 8723 8724 lba = scsi_4btoul(cdb->addr); 8725 num_blocks = scsi_4btoul(cdb->length); 8726 8727 break; 8728 } 8729 case READ_16: 8730 case WRITE_16: { 8731 struct scsi_rw_16 *cdb; 8732 8733 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8734 8735 if (cdb->byte2 & SRW12_RELADDR) 8736 reladdr = 1; 8737 if (cdb->byte2 & SRW12_FUA) 8738 fua = 1; 8739 if (cdb->byte2 & SRW12_DPO) 8740 dpo = 1; 8741 8742 lba = scsi_8btou64(cdb->addr); 8743 num_blocks = scsi_4btoul(cdb->length); 8744 break; 8745 } 8746 case WRITE_VERIFY_16: { 8747 struct scsi_write_verify_16 *cdb; 8748 8749 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8750 8751 if (cdb->byte2 & SWV_DPO) 8752 dpo = 1; 8753 8754 lba = scsi_8btou64(cdb->addr); 8755 num_blocks = scsi_4btoul(cdb->length); 8756 break; 8757 } 8758 default: 8759 /* 8760 * We got a command we don't support. This shouldn't 8761 * happen, commands should be filtered out above us. 8762 */ 8763 ctl_set_invalid_opcode(ctsio); 8764 ctl_done((union ctl_io *)ctsio); 8765 8766 return (CTL_RETVAL_COMPLETE); 8767 break; /* NOTREACHED */ 8768 } 8769 8770 /* 8771 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8772 * interesting for us, but if RAIDCore is in write-back mode, 8773 * getting it to do write-through for a particular transaction may 8774 * not be possible. 8775 */ 8776 /* 8777 * We don't support relative addressing. That also requires 8778 * supporting linked commands, which we don't do. 8779 */ 8780 if (reladdr != 0) { 8781 ctl_set_invalid_field(ctsio, 8782 /*sks_valid*/ 1, 8783 /*command*/ 1, 8784 /*field*/ 1, 8785 /*bit_valid*/ 1, 8786 /*bit*/ 0); 8787 ctl_done((union ctl_io *)ctsio); 8788 return (CTL_RETVAL_COMPLETE); 8789 } 8790 8791 /* 8792 * The first check is to make sure we're in bounds, the second 8793 * check is to catch wrap-around problems. If the lba + num blocks 8794 * is less than the lba, then we've wrapped around and the block 8795 * range is invalid anyway. 8796 */ 8797 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8798 || ((lba + num_blocks) < lba)) { 8799 ctl_set_lba_out_of_range(ctsio); 8800 ctl_done((union ctl_io *)ctsio); 8801 return (CTL_RETVAL_COMPLETE); 8802 } 8803 8804 /* 8805 * According to SBC-3, a transfer length of 0 is not an error. 8806 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8807 * translates to 256 blocks for those commands. 8808 */ 8809 if (num_blocks == 0) { 8810 ctl_set_success(ctsio); 8811 ctl_done((union ctl_io *)ctsio); 8812 return (CTL_RETVAL_COMPLETE); 8813 } 8814 8815 lbalen = (struct ctl_lba_len_flags *) 8816 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8817 lbalen->lba = lba; 8818 lbalen->len = num_blocks; 8819 lbalen->flags = isread ? CTL_LLF_READ : CTL_LLF_WRITE; 8820 8821 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 8822 ctsio->kern_rel_offset = 0; 8823 8824 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8825 8826 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8827 8828 return (retval); 8829} 8830 8831static int 8832ctl_cnw_cont(union ctl_io *io) 8833{ 8834 struct ctl_scsiio *ctsio; 8835 struct ctl_lun *lun; 8836 struct ctl_lba_len_flags *lbalen; 8837 int retval; 8838 8839 ctsio = &io->scsiio; 8840 ctsio->io_hdr.status = CTL_STATUS_NONE; 8841 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_CONT; 8842 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8843 lbalen = (struct ctl_lba_len_flags *) 8844 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8845 lbalen->flags = CTL_LLF_WRITE; 8846 8847 CTL_DEBUG_PRINT(("ctl_cnw_cont: calling data_submit()\n")); 8848 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8849 return (retval); 8850} 8851 8852int 8853ctl_cnw(struct ctl_scsiio *ctsio) 8854{ 8855 struct ctl_lun *lun; 8856 struct ctl_lba_len_flags *lbalen; 8857 uint64_t lba; 8858 uint32_t num_blocks; 8859 int fua, dpo; 8860 int retval; 8861 8862 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8863 8864 CTL_DEBUG_PRINT(("ctl_cnw: command: %#x\n", ctsio->cdb[0])); 8865 8866 fua = 0; 8867 dpo = 0; 8868 8869 retval = CTL_RETVAL_COMPLETE; 8870 8871 switch (ctsio->cdb[0]) { 8872 case COMPARE_AND_WRITE: { 8873 struct scsi_compare_and_write *cdb; 8874 8875 cdb = (struct scsi_compare_and_write *)ctsio->cdb; 8876 8877 if (cdb->byte2 & SRW10_FUA) 8878 fua = 1; 8879 if (cdb->byte2 & SRW10_DPO) 8880 dpo = 1; 8881 lba = scsi_8btou64(cdb->addr); 8882 num_blocks = cdb->length; 8883 break; 8884 } 8885 default: 8886 /* 8887 * We got a command we don't support. This shouldn't 8888 * happen, commands should be filtered out above us. 8889 */ 8890 ctl_set_invalid_opcode(ctsio); 8891 ctl_done((union ctl_io *)ctsio); 8892 8893 return (CTL_RETVAL_COMPLETE); 8894 break; /* NOTREACHED */ 8895 } 8896 8897 /* 8898 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8899 * interesting for us, but if RAIDCore is in write-back mode, 8900 * getting it to do write-through for a particular transaction may 8901 * not be possible. 8902 */ 8903 8904 /* 8905 * The first check is to make sure we're in bounds, the second 8906 * check is to catch wrap-around problems. If the lba + num blocks 8907 * is less than the lba, then we've wrapped around and the block 8908 * range is invalid anyway. 8909 */ 8910 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8911 || ((lba + num_blocks) < lba)) { 8912 ctl_set_lba_out_of_range(ctsio); 8913 ctl_done((union ctl_io *)ctsio); 8914 return (CTL_RETVAL_COMPLETE); 8915 } 8916 8917 /* 8918 * According to SBC-3, a transfer length of 0 is not an error. 8919 */ 8920 if (num_blocks == 0) { 8921 ctl_set_success(ctsio); 8922 ctl_done((union ctl_io *)ctsio); 8923 return (CTL_RETVAL_COMPLETE); 8924 } 8925 8926 ctsio->kern_total_len = 2 * num_blocks * lun->be_lun->blocksize; 8927 ctsio->kern_rel_offset = 0; 8928 8929 /* 8930 * Set the IO_CONT flag, so that if this I/O gets passed to 8931 * ctl_data_submit_done(), it'll get passed back to 8932 * ctl_ctl_cnw_cont() for further processing. 8933 */ 8934 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 8935 ctsio->io_cont = ctl_cnw_cont; 8936 8937 lbalen = (struct ctl_lba_len_flags *) 8938 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8939 lbalen->lba = lba; 8940 lbalen->len = num_blocks; 8941 lbalen->flags = CTL_LLF_COMPARE; 8942 8943 CTL_DEBUG_PRINT(("ctl_cnw: calling data_submit()\n")); 8944 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8945 return (retval); 8946} 8947 8948int 8949ctl_verify(struct ctl_scsiio *ctsio) 8950{ 8951 struct ctl_lun *lun; 8952 struct ctl_lba_len_flags *lbalen; 8953 uint64_t lba; 8954 uint32_t num_blocks; 8955 int bytchk, dpo; 8956 int retval; 8957 8958 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8959 8960 CTL_DEBUG_PRINT(("ctl_verify: command: %#x\n", ctsio->cdb[0])); 8961 8962 bytchk = 0; 8963 dpo = 0; 8964 retval = CTL_RETVAL_COMPLETE; 8965 8966 switch (ctsio->cdb[0]) { 8967 case VERIFY_10: { 8968 struct scsi_verify_10 *cdb; 8969 8970 cdb = (struct scsi_verify_10 *)ctsio->cdb; 8971 if (cdb->byte2 & SVFY_BYTCHK) 8972 bytchk = 1; 8973 if (cdb->byte2 & SVFY_DPO) 8974 dpo = 1; 8975 lba = scsi_4btoul(cdb->addr); 8976 num_blocks = scsi_2btoul(cdb->length); 8977 break; 8978 } 8979 case VERIFY_12: { 8980 struct scsi_verify_12 *cdb; 8981 8982 cdb = (struct scsi_verify_12 *)ctsio->cdb; 8983 if (cdb->byte2 & SVFY_BYTCHK) 8984 bytchk = 1; 8985 if (cdb->byte2 & SVFY_DPO) 8986 dpo = 1; 8987 lba = scsi_4btoul(cdb->addr); 8988 num_blocks = scsi_4btoul(cdb->length); 8989 break; 8990 } 8991 case VERIFY_16: { 8992 struct scsi_rw_16 *cdb; 8993 8994 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8995 if (cdb->byte2 & SVFY_BYTCHK) 8996 bytchk = 1; 8997 if (cdb->byte2 & SVFY_DPO) 8998 dpo = 1; 8999 lba = scsi_8btou64(cdb->addr); 9000 num_blocks = scsi_4btoul(cdb->length); 9001 break; 9002 } 9003 default: 9004 /* 9005 * We got a command we don't support. This shouldn't 9006 * happen, commands should be filtered out above us. 9007 */ 9008 ctl_set_invalid_opcode(ctsio); 9009 ctl_done((union ctl_io *)ctsio); 9010 return (CTL_RETVAL_COMPLETE); 9011 } 9012 9013 /* 9014 * The first check is to make sure we're in bounds, the second 9015 * check is to catch wrap-around problems. If the lba + num blocks 9016 * is less than the lba, then we've wrapped around and the block 9017 * range is invalid anyway. 9018 */ 9019 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9020 || ((lba + num_blocks) < lba)) { 9021 ctl_set_lba_out_of_range(ctsio); 9022 ctl_done((union ctl_io *)ctsio); 9023 return (CTL_RETVAL_COMPLETE); 9024 } 9025 9026 /* 9027 * According to SBC-3, a transfer length of 0 is not an error. 9028 */ 9029 if (num_blocks == 0) { 9030 ctl_set_success(ctsio); 9031 ctl_done((union ctl_io *)ctsio); 9032 return (CTL_RETVAL_COMPLETE); 9033 } 9034 9035 lbalen = (struct ctl_lba_len_flags *) 9036 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9037 lbalen->lba = lba; 9038 lbalen->len = num_blocks; 9039 if (bytchk) { 9040 lbalen->flags = CTL_LLF_COMPARE; 9041 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 9042 } else { 9043 lbalen->flags = CTL_LLF_VERIFY; 9044 ctsio->kern_total_len = 0; 9045 } 9046 ctsio->kern_rel_offset = 0; 9047 9048 CTL_DEBUG_PRINT(("ctl_verify: calling data_submit()\n")); 9049 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9050 return (retval); 9051} 9052 9053int 9054ctl_report_luns(struct ctl_scsiio *ctsio) 9055{ 9056 struct scsi_report_luns *cdb; 9057 struct scsi_report_luns_data *lun_data; 9058 struct ctl_lun *lun, *request_lun; 9059 int num_luns, retval; 9060 uint32_t alloc_len, lun_datalen; 9061 int num_filled, well_known; 9062 uint32_t initidx, targ_lun_id, lun_id; 9063 9064 retval = CTL_RETVAL_COMPLETE; 9065 well_known = 0; 9066 9067 cdb = (struct scsi_report_luns *)ctsio->cdb; 9068 9069 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 9070 9071 mtx_lock(&control_softc->ctl_lock); 9072 num_luns = control_softc->num_luns; 9073 mtx_unlock(&control_softc->ctl_lock); 9074 9075 switch (cdb->select_report) { 9076 case RPL_REPORT_DEFAULT: 9077 case RPL_REPORT_ALL: 9078 break; 9079 case RPL_REPORT_WELLKNOWN: 9080 well_known = 1; 9081 num_luns = 0; 9082 break; 9083 default: 9084 ctl_set_invalid_field(ctsio, 9085 /*sks_valid*/ 1, 9086 /*command*/ 1, 9087 /*field*/ 2, 9088 /*bit_valid*/ 0, 9089 /*bit*/ 0); 9090 ctl_done((union ctl_io *)ctsio); 9091 return (retval); 9092 break; /* NOTREACHED */ 9093 } 9094 9095 alloc_len = scsi_4btoul(cdb->length); 9096 /* 9097 * The initiator has to allocate at least 16 bytes for this request, 9098 * so he can at least get the header and the first LUN. Otherwise 9099 * we reject the request (per SPC-3 rev 14, section 6.21). 9100 */ 9101 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 9102 sizeof(struct scsi_report_luns_lundata))) { 9103 ctl_set_invalid_field(ctsio, 9104 /*sks_valid*/ 1, 9105 /*command*/ 1, 9106 /*field*/ 6, 9107 /*bit_valid*/ 0, 9108 /*bit*/ 0); 9109 ctl_done((union ctl_io *)ctsio); 9110 return (retval); 9111 } 9112 9113 request_lun = (struct ctl_lun *) 9114 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9115 9116 lun_datalen = sizeof(*lun_data) + 9117 (num_luns * sizeof(struct scsi_report_luns_lundata)); 9118 9119 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 9120 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 9121 ctsio->kern_sg_entries = 0; 9122 9123 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9124 9125 mtx_lock(&control_softc->ctl_lock); 9126 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 9127 lun_id = targ_lun_id; 9128 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 9129 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 9130 if (lun_id >= CTL_MAX_LUNS) 9131 continue; 9132 lun = control_softc->ctl_luns[lun_id]; 9133 if (lun == NULL) 9134 continue; 9135 9136 if (targ_lun_id <= 0xff) { 9137 /* 9138 * Peripheral addressing method, bus number 0. 9139 */ 9140 lun_data->luns[num_filled].lundata[0] = 9141 RPL_LUNDATA_ATYP_PERIPH; 9142 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 9143 num_filled++; 9144 } else if (targ_lun_id <= 0x3fff) { 9145 /* 9146 * Flat addressing method. 9147 */ 9148 lun_data->luns[num_filled].lundata[0] = 9149 RPL_LUNDATA_ATYP_FLAT | 9150 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 9151#ifdef OLDCTLHEADERS 9152 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 9153 (targ_lun_id & SRLD_BUS_LUN_MASK); 9154#endif 9155 lun_data->luns[num_filled].lundata[1] = 9156#ifdef OLDCTLHEADERS 9157 targ_lun_id >> SRLD_BUS_LUN_BITS; 9158#endif 9159 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 9160 num_filled++; 9161 } else { 9162 printf("ctl_report_luns: bogus LUN number %jd, " 9163 "skipping\n", (intmax_t)targ_lun_id); 9164 } 9165 /* 9166 * According to SPC-3, rev 14 section 6.21: 9167 * 9168 * "The execution of a REPORT LUNS command to any valid and 9169 * installed logical unit shall clear the REPORTED LUNS DATA 9170 * HAS CHANGED unit attention condition for all logical 9171 * units of that target with respect to the requesting 9172 * initiator. A valid and installed logical unit is one 9173 * having a PERIPHERAL QUALIFIER of 000b in the standard 9174 * INQUIRY data (see 6.4.2)." 9175 * 9176 * If request_lun is NULL, the LUN this report luns command 9177 * was issued to is either disabled or doesn't exist. In that 9178 * case, we shouldn't clear any pending lun change unit 9179 * attention. 9180 */ 9181 if (request_lun != NULL) 9182 lun->pending_sense[initidx].ua_pending &= 9183 ~CTL_UA_LUN_CHANGE; 9184 } 9185 mtx_unlock(&control_softc->ctl_lock); 9186 9187 /* 9188 * It's quite possible that we've returned fewer LUNs than we allocated 9189 * space for. Trim it. 9190 */ 9191 lun_datalen = sizeof(*lun_data) + 9192 (num_filled * sizeof(struct scsi_report_luns_lundata)); 9193 9194 if (lun_datalen < alloc_len) { 9195 ctsio->residual = alloc_len - lun_datalen; 9196 ctsio->kern_data_len = lun_datalen; 9197 ctsio->kern_total_len = lun_datalen; 9198 } else { 9199 ctsio->residual = 0; 9200 ctsio->kern_data_len = alloc_len; 9201 ctsio->kern_total_len = alloc_len; 9202 } 9203 ctsio->kern_data_resid = 0; 9204 ctsio->kern_rel_offset = 0; 9205 ctsio->kern_sg_entries = 0; 9206 9207 /* 9208 * We set this to the actual data length, regardless of how much 9209 * space we actually have to return results. If the user looks at 9210 * this value, he'll know whether or not he allocated enough space 9211 * and reissue the command if necessary. We don't support well 9212 * known logical units, so if the user asks for that, return none. 9213 */ 9214 scsi_ulto4b(lun_datalen - 8, lun_data->length); 9215 9216 /* 9217 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 9218 * this request. 9219 */ 9220 ctsio->scsi_status = SCSI_STATUS_OK; 9221 9222 ctsio->be_move_done = ctl_config_move_done; 9223 ctl_datamove((union ctl_io *)ctsio); 9224 9225 return (retval); 9226} 9227 9228int 9229ctl_request_sense(struct ctl_scsiio *ctsio) 9230{ 9231 struct scsi_request_sense *cdb; 9232 struct scsi_sense_data *sense_ptr; 9233 struct ctl_lun *lun; 9234 uint32_t initidx; 9235 int have_error; 9236 scsi_sense_data_type sense_format; 9237 9238 cdb = (struct scsi_request_sense *)ctsio->cdb; 9239 9240 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9241 9242 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9243 9244 /* 9245 * Determine which sense format the user wants. 9246 */ 9247 if (cdb->byte2 & SRS_DESC) 9248 sense_format = SSD_TYPE_DESC; 9249 else 9250 sense_format = SSD_TYPE_FIXED; 9251 9252 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9253 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9254 ctsio->kern_sg_entries = 0; 9255 9256 /* 9257 * struct scsi_sense_data, which is currently set to 256 bytes, is 9258 * larger than the largest allowed value for the length field in the 9259 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9260 */ 9261 ctsio->residual = 0; 9262 ctsio->kern_data_len = cdb->length; 9263 ctsio->kern_total_len = cdb->length; 9264 9265 ctsio->kern_data_resid = 0; 9266 ctsio->kern_rel_offset = 0; 9267 ctsio->kern_sg_entries = 0; 9268 9269 /* 9270 * If we don't have a LUN, we don't have any pending sense. 9271 */ 9272 if (lun == NULL) 9273 goto no_sense; 9274 9275 have_error = 0; 9276 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9277 /* 9278 * Check for pending sense, and then for pending unit attentions. 9279 * Pending sense gets returned first, then pending unit attentions. 9280 */ 9281 mtx_lock(&lun->ctl_softc->ctl_lock); 9282 if (ctl_is_set(lun->have_ca, initidx)) { 9283 scsi_sense_data_type stored_format; 9284 9285 /* 9286 * Check to see which sense format was used for the stored 9287 * sense data. 9288 */ 9289 stored_format = scsi_sense_type( 9290 &lun->pending_sense[initidx].sense); 9291 9292 /* 9293 * If the user requested a different sense format than the 9294 * one we stored, then we need to convert it to the other 9295 * format. If we're going from descriptor to fixed format 9296 * sense data, we may lose things in translation, depending 9297 * on what options were used. 9298 * 9299 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9300 * for some reason we'll just copy it out as-is. 9301 */ 9302 if ((stored_format == SSD_TYPE_FIXED) 9303 && (sense_format == SSD_TYPE_DESC)) 9304 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9305 &lun->pending_sense[initidx].sense, 9306 (struct scsi_sense_data_desc *)sense_ptr); 9307 else if ((stored_format == SSD_TYPE_DESC) 9308 && (sense_format == SSD_TYPE_FIXED)) 9309 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9310 &lun->pending_sense[initidx].sense, 9311 (struct scsi_sense_data_fixed *)sense_ptr); 9312 else 9313 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9314 ctl_min(sizeof(*sense_ptr), 9315 sizeof(lun->pending_sense[initidx].sense))); 9316 9317 ctl_clear_mask(lun->have_ca, initidx); 9318 have_error = 1; 9319 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9320 ctl_ua_type ua_type; 9321 9322 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9323 sense_ptr, sense_format); 9324 if (ua_type != CTL_UA_NONE) { 9325 have_error = 1; 9326 /* We're reporting this UA, so clear it */ 9327 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9328 } 9329 } 9330 mtx_unlock(&lun->ctl_softc->ctl_lock); 9331 9332 /* 9333 * We already have a pending error, return it. 9334 */ 9335 if (have_error != 0) { 9336 /* 9337 * We report the SCSI status as OK, since the status of the 9338 * request sense command itself is OK. 9339 */ 9340 ctsio->scsi_status = SCSI_STATUS_OK; 9341 9342 /* 9343 * We report 0 for the sense length, because we aren't doing 9344 * autosense in this case. We're reporting sense as 9345 * parameter data. 9346 */ 9347 ctsio->sense_len = 0; 9348 9349 ctsio->be_move_done = ctl_config_move_done; 9350 ctl_datamove((union ctl_io *)ctsio); 9351 9352 return (CTL_RETVAL_COMPLETE); 9353 } 9354 9355no_sense: 9356 9357 /* 9358 * No sense information to report, so we report that everything is 9359 * okay. 9360 */ 9361 ctl_set_sense_data(sense_ptr, 9362 lun, 9363 sense_format, 9364 /*current_error*/ 1, 9365 /*sense_key*/ SSD_KEY_NO_SENSE, 9366 /*asc*/ 0x00, 9367 /*ascq*/ 0x00, 9368 SSD_ELEM_NONE); 9369 9370 ctsio->scsi_status = SCSI_STATUS_OK; 9371 9372 /* 9373 * We report 0 for the sense length, because we aren't doing 9374 * autosense in this case. We're reporting sense as parameter data. 9375 */ 9376 ctsio->sense_len = 0; 9377 ctsio->be_move_done = ctl_config_move_done; 9378 ctl_datamove((union ctl_io *)ctsio); 9379 9380 return (CTL_RETVAL_COMPLETE); 9381} 9382 9383int 9384ctl_tur(struct ctl_scsiio *ctsio) 9385{ 9386 struct ctl_lun *lun; 9387 9388 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9389 9390 CTL_DEBUG_PRINT(("ctl_tur\n")); 9391 9392 if (lun == NULL) 9393 return (-EINVAL); 9394 9395 ctsio->scsi_status = SCSI_STATUS_OK; 9396 ctsio->io_hdr.status = CTL_SUCCESS; 9397 9398 ctl_done((union ctl_io *)ctsio); 9399 9400 return (CTL_RETVAL_COMPLETE); 9401} 9402 9403#ifdef notyet 9404static int 9405ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9406{ 9407 9408} 9409#endif 9410 9411static int 9412ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9413{ 9414 struct scsi_vpd_supported_pages *pages; 9415 int sup_page_size; 9416 struct ctl_lun *lun; 9417 9418 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9419 9420 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9421 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9422 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9423 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9424 ctsio->kern_sg_entries = 0; 9425 9426 if (sup_page_size < alloc_len) { 9427 ctsio->residual = alloc_len - sup_page_size; 9428 ctsio->kern_data_len = sup_page_size; 9429 ctsio->kern_total_len = sup_page_size; 9430 } else { 9431 ctsio->residual = 0; 9432 ctsio->kern_data_len = alloc_len; 9433 ctsio->kern_total_len = alloc_len; 9434 } 9435 ctsio->kern_data_resid = 0; 9436 ctsio->kern_rel_offset = 0; 9437 ctsio->kern_sg_entries = 0; 9438 9439 /* 9440 * The control device is always connected. The disk device, on the 9441 * other hand, may not be online all the time. Need to change this 9442 * to figure out whether the disk device is actually online or not. 9443 */ 9444 if (lun != NULL) 9445 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9446 lun->be_lun->lun_type; 9447 else 9448 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9449 9450 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9451 /* Supported VPD pages */ 9452 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9453 /* Serial Number */ 9454 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9455 /* Device Identification */ 9456 pages->page_list[2] = SVPD_DEVICE_ID; 9457 /* Block limits */ 9458 pages->page_list[3] = SVPD_BLOCK_LIMITS; 9459 /* Logical Block Provisioning */ 9460 pages->page_list[4] = SVPD_LBP; 9461 9462 ctsio->scsi_status = SCSI_STATUS_OK; 9463 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->be_move_done = ctl_config_move_done; 9520 ctl_datamove((union ctl_io *)ctsio); 9521 9522 return (CTL_RETVAL_COMPLETE); 9523} 9524 9525 9526static int 9527ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9528{ 9529 struct scsi_vpd_device_id *devid_ptr; 9530 struct scsi_vpd_id_descriptor *desc, *desc1; 9531 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9532 struct scsi_vpd_id_t10 *t10id; 9533 struct ctl_softc *ctl_softc; 9534 struct ctl_lun *lun; 9535 struct ctl_frontend *fe; 9536 char *val; 9537 int data_len, devid_len; 9538 9539 ctl_softc = control_softc; 9540 9541 mtx_lock(&ctl_softc->ctl_lock); 9542 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9543 mtx_unlock(&ctl_softc->ctl_lock); 9544 9545 if (fe->devid != NULL) 9546 return ((fe->devid)(ctsio, alloc_len)); 9547 9548 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9549 9550 if (lun == NULL) { 9551 devid_len = CTL_DEVID_MIN_LEN; 9552 } else { 9553 devid_len = max(CTL_DEVID_MIN_LEN, 9554 strnlen(lun->be_lun->device_id, CTL_DEVID_LEN)); 9555 } 9556 9557 data_len = sizeof(struct scsi_vpd_device_id) + 9558 sizeof(struct scsi_vpd_id_descriptor) + 9559 sizeof(struct scsi_vpd_id_t10) + devid_len + 9560 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9561 sizeof(struct scsi_vpd_id_descriptor) + 9562 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9563 sizeof(struct scsi_vpd_id_descriptor) + 9564 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9565 9566 ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO); 9567 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9568 ctsio->kern_sg_entries = 0; 9569 9570 if (data_len < alloc_len) { 9571 ctsio->residual = alloc_len - data_len; 9572 ctsio->kern_data_len = data_len; 9573 ctsio->kern_total_len = data_len; 9574 } else { 9575 ctsio->residual = 0; 9576 ctsio->kern_data_len = alloc_len; 9577 ctsio->kern_total_len = alloc_len; 9578 } 9579 ctsio->kern_data_resid = 0; 9580 ctsio->kern_rel_offset = 0; 9581 ctsio->kern_sg_entries = 0; 9582 9583 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9584 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9585 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9586 sizeof(struct scsi_vpd_id_t10) + devid_len); 9587 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9588 CTL_WWPN_LEN); 9589 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9590 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9591 9592 /* 9593 * The control device is always connected. The disk device, on the 9594 * other hand, may not be online all the time. 9595 */ 9596 if (lun != NULL) 9597 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9598 lun->be_lun->lun_type; 9599 else 9600 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9601 9602 devid_ptr->page_code = SVPD_DEVICE_ID; 9603 9604 scsi_ulto2b(data_len - 4, devid_ptr->length); 9605 9606 mtx_lock(&ctl_softc->ctl_lock); 9607 9608 /* 9609 * For Fibre channel, 9610 */ 9611 if (fe->port_type == CTL_PORT_FC) 9612 { 9613 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9614 SVPD_ID_CODESET_ASCII; 9615 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9616 SVPD_ID_CODESET_BINARY; 9617 } 9618 else 9619 { 9620 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9621 SVPD_ID_CODESET_ASCII; 9622 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9623 SVPD_ID_CODESET_BINARY; 9624 } 9625 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9626 mtx_unlock(&ctl_softc->ctl_lock); 9627 9628 /* 9629 * We're using a LUN association here. i.e., this device ID is a 9630 * per-LUN identifier. 9631 */ 9632 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9633 desc->length = sizeof(*t10id) + devid_len; 9634 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 9635 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9636 } else { 9637 memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 9638 strncpy(t10id->vendor, val, 9639 min(sizeof(t10id->vendor), strlen(val))); 9640 } 9641 9642 /* 9643 * desc1 is for the WWPN which is a port asscociation. 9644 */ 9645 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9646 desc1->length = CTL_WWPN_LEN; 9647 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9648 /* For testing just create the WWPN */ 9649#if 0 9650 ddb_GetWWNN((char *)desc1->identifier); 9651 9652 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9653 /* This is so Copancontrol will return something sane */ 9654 if (ctsio->io_hdr.nexus.targ_port!=0 && 9655 ctsio->io_hdr.nexus.targ_port!=8) 9656 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9657 else 9658 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9659#endif 9660 9661 be64enc(desc1->identifier, fe->wwpn); 9662 9663 /* 9664 * desc2 is for the Relative Target Port(type 4h) identifier 9665 */ 9666 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9667 | SVPD_ID_TYPE_RELTARG; 9668 desc2->length = 4; 9669//#if 0 9670 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9671 /* This is so Copancontrol will return something sane */ 9672 if (ctsio->io_hdr.nexus.targ_port!=0 && 9673 ctsio->io_hdr.nexus.targ_port!=8) 9674 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9675 else 9676 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9677//#endif 9678 9679 /* 9680 * desc3 is for the Target Port Group(type 5h) identifier 9681 */ 9682 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9683 | SVPD_ID_TYPE_TPORTGRP; 9684 desc3->length = 4; 9685 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9686 desc3->identifier[3] = 1; 9687 else 9688 desc3->identifier[3] = 2; 9689 9690 /* 9691 * If we've actually got a backend, copy the device id from the 9692 * per-LUN data. Otherwise, set it to all spaces. 9693 */ 9694 if (lun != NULL) { 9695 /* 9696 * Copy the backend's LUN ID. 9697 */ 9698 strncpy((char *)t10id->vendor_spec_id, 9699 (char *)lun->be_lun->device_id, devid_len); 9700 } else { 9701 /* 9702 * No backend, set this to spaces. 9703 */ 9704 memset(t10id->vendor_spec_id, 0x20, devid_len); 9705 } 9706 9707 ctsio->scsi_status = SCSI_STATUS_OK; 9708 9709 ctsio->be_move_done = ctl_config_move_done; 9710 ctl_datamove((union ctl_io *)ctsio); 9711 9712 return (CTL_RETVAL_COMPLETE); 9713} 9714 9715static int 9716ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9717{ 9718 struct scsi_vpd_block_limits *bl_ptr; 9719 struct ctl_lun *lun; 9720 int bs; 9721 9722 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9723 bs = lun->be_lun->blocksize; 9724 9725 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9726 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9727 ctsio->kern_sg_entries = 0; 9728 9729 if (sizeof(*bl_ptr) < alloc_len) { 9730 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9731 ctsio->kern_data_len = sizeof(*bl_ptr); 9732 ctsio->kern_total_len = sizeof(*bl_ptr); 9733 } else { 9734 ctsio->residual = 0; 9735 ctsio->kern_data_len = alloc_len; 9736 ctsio->kern_total_len = alloc_len; 9737 } 9738 ctsio->kern_data_resid = 0; 9739 ctsio->kern_rel_offset = 0; 9740 ctsio->kern_sg_entries = 0; 9741 9742 /* 9743 * The control device is always connected. The disk device, on the 9744 * other hand, may not be online all the time. Need to change this 9745 * to figure out whether the disk device is actually online or not. 9746 */ 9747 if (lun != NULL) 9748 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9749 lun->be_lun->lun_type; 9750 else 9751 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9752 9753 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9754 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9755 bl_ptr->max_cmp_write_len = 0xff; 9756 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9757 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9758 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9759 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9760 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9761 } 9762 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9763 9764 ctsio->scsi_status = SCSI_STATUS_OK; 9765 ctsio->be_move_done = ctl_config_move_done; 9766 ctl_datamove((union ctl_io *)ctsio); 9767 9768 return (CTL_RETVAL_COMPLETE); 9769} 9770 9771static int 9772ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 9773{ 9774 struct scsi_vpd_logical_block_prov *lbp_ptr; 9775 struct ctl_lun *lun; 9776 int bs; 9777 9778 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9779 bs = lun->be_lun->blocksize; 9780 9781 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 9782 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 9783 ctsio->kern_sg_entries = 0; 9784 9785 if (sizeof(*lbp_ptr) < alloc_len) { 9786 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 9787 ctsio->kern_data_len = sizeof(*lbp_ptr); 9788 ctsio->kern_total_len = sizeof(*lbp_ptr); 9789 } else { 9790 ctsio->residual = 0; 9791 ctsio->kern_data_len = alloc_len; 9792 ctsio->kern_total_len = alloc_len; 9793 } 9794 ctsio->kern_data_resid = 0; 9795 ctsio->kern_rel_offset = 0; 9796 ctsio->kern_sg_entries = 0; 9797 9798 /* 9799 * The control device is always connected. The disk device, on the 9800 * other hand, may not be online all the time. Need to change this 9801 * to figure out whether the disk device is actually online or not. 9802 */ 9803 if (lun != NULL) 9804 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9805 lun->be_lun->lun_type; 9806 else 9807 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9808 9809 lbp_ptr->page_code = SVPD_LBP; 9810 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 9811 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 9812 9813 ctsio->scsi_status = SCSI_STATUS_OK; 9814 ctsio->be_move_done = ctl_config_move_done; 9815 ctl_datamove((union ctl_io *)ctsio); 9816 9817 return (CTL_RETVAL_COMPLETE); 9818} 9819 9820static int 9821ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9822{ 9823 struct scsi_inquiry *cdb; 9824 struct ctl_lun *lun; 9825 int alloc_len, retval; 9826 9827 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9828 cdb = (struct scsi_inquiry *)ctsio->cdb; 9829 9830 retval = CTL_RETVAL_COMPLETE; 9831 9832 alloc_len = scsi_2btoul(cdb->length); 9833 9834 switch (cdb->page_code) { 9835 case SVPD_SUPPORTED_PAGES: 9836 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9837 break; 9838 case SVPD_UNIT_SERIAL_NUMBER: 9839 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9840 break; 9841 case SVPD_DEVICE_ID: 9842 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9843 break; 9844 case SVPD_BLOCK_LIMITS: 9845 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 9846 break; 9847 case SVPD_LBP: 9848 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 9849 break; 9850 default: 9851 ctl_set_invalid_field(ctsio, 9852 /*sks_valid*/ 1, 9853 /*command*/ 1, 9854 /*field*/ 2, 9855 /*bit_valid*/ 0, 9856 /*bit*/ 0); 9857 ctl_done((union ctl_io *)ctsio); 9858 retval = CTL_RETVAL_COMPLETE; 9859 break; 9860 } 9861 9862 return (retval); 9863} 9864 9865static int 9866ctl_inquiry_std(struct ctl_scsiio *ctsio) 9867{ 9868 struct scsi_inquiry_data *inq_ptr; 9869 struct scsi_inquiry *cdb; 9870 struct ctl_softc *ctl_softc; 9871 struct ctl_lun *lun; 9872 char *val; 9873 uint32_t alloc_len; 9874 int is_fc; 9875 9876 ctl_softc = control_softc; 9877 9878 /* 9879 * Figure out whether we're talking to a Fibre Channel port or not. 9880 * We treat the ioctl front end, and any SCSI adapters, as packetized 9881 * SCSI front ends. 9882 */ 9883 mtx_lock(&ctl_softc->ctl_lock); 9884 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9885 CTL_PORT_FC) 9886 is_fc = 0; 9887 else 9888 is_fc = 1; 9889 mtx_unlock(&ctl_softc->ctl_lock); 9890 9891 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9892 cdb = (struct scsi_inquiry *)ctsio->cdb; 9893 alloc_len = scsi_2btoul(cdb->length); 9894 9895 /* 9896 * We malloc the full inquiry data size here and fill it 9897 * in. If the user only asks for less, we'll give him 9898 * that much. 9899 */ 9900 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9901 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9902 ctsio->kern_sg_entries = 0; 9903 ctsio->kern_data_resid = 0; 9904 ctsio->kern_rel_offset = 0; 9905 9906 if (sizeof(*inq_ptr) < alloc_len) { 9907 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9908 ctsio->kern_data_len = sizeof(*inq_ptr); 9909 ctsio->kern_total_len = sizeof(*inq_ptr); 9910 } else { 9911 ctsio->residual = 0; 9912 ctsio->kern_data_len = alloc_len; 9913 ctsio->kern_total_len = alloc_len; 9914 } 9915 9916 /* 9917 * If we have a LUN configured, report it as connected. Otherwise, 9918 * report that it is offline or no device is supported, depending 9919 * on the value of inquiry_pq_no_lun. 9920 * 9921 * According to the spec (SPC-4 r34), the peripheral qualifier 9922 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9923 * 9924 * "A peripheral device having the specified peripheral device type 9925 * is not connected to this logical unit. However, the device 9926 * server is capable of supporting the specified peripheral device 9927 * type on this logical unit." 9928 * 9929 * According to the same spec, the peripheral qualifier 9930 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9931 * 9932 * "The device server is not capable of supporting a peripheral 9933 * device on this logical unit. For this peripheral qualifier the 9934 * peripheral device type shall be set to 1Fh. All other peripheral 9935 * device type values are reserved for this peripheral qualifier." 9936 * 9937 * Given the text, it would seem that we probably want to report that 9938 * the LUN is offline here. There is no LUN connected, but we can 9939 * support a LUN at the given LUN number. 9940 * 9941 * In the real world, though, it sounds like things are a little 9942 * different: 9943 * 9944 * - Linux, when presented with a LUN with the offline peripheral 9945 * qualifier, will create an sg driver instance for it. So when 9946 * you attach it to CTL, you wind up with a ton of sg driver 9947 * instances. (One for every LUN that Linux bothered to probe.) 9948 * Linux does this despite the fact that it issues a REPORT LUNs 9949 * to LUN 0 to get the inventory of supported LUNs. 9950 * 9951 * - There is other anecdotal evidence (from Emulex folks) about 9952 * arrays that use the offline peripheral qualifier for LUNs that 9953 * are on the "passive" path in an active/passive array. 9954 * 9955 * So the solution is provide a hopefully reasonable default 9956 * (return bad/no LUN) and allow the user to change the behavior 9957 * with a tunable/sysctl variable. 9958 */ 9959 if (lun != NULL) 9960 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9961 lun->be_lun->lun_type; 9962 else if (ctl_softc->inquiry_pq_no_lun == 0) 9963 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9964 else 9965 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9966 9967 /* RMB in byte 2 is 0 */ 9968 inq_ptr->version = SCSI_REV_SPC3; 9969 9970 /* 9971 * According to SAM-3, even if a device only supports a single 9972 * level of LUN addressing, it should still set the HISUP bit: 9973 * 9974 * 4.9.1 Logical unit numbers overview 9975 * 9976 * All logical unit number formats described in this standard are 9977 * hierarchical in structure even when only a single level in that 9978 * hierarchy is used. The HISUP bit shall be set to one in the 9979 * standard INQUIRY data (see SPC-2) when any logical unit number 9980 * format described in this standard is used. Non-hierarchical 9981 * formats are outside the scope of this standard. 9982 * 9983 * Therefore we set the HiSup bit here. 9984 * 9985 * The reponse format is 2, per SPC-3. 9986 */ 9987 inq_ptr->response_format = SID_HiSup | 2; 9988 9989 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9990 CTL_DEBUG_PRINT(("additional_length = %d\n", 9991 inq_ptr->additional_length)); 9992 9993 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9994 /* 16 bit addressing */ 9995 if (is_fc == 0) 9996 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9997 /* XXX set the SID_MultiP bit here if we're actually going to 9998 respond on multiple ports */ 9999 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 10000 10001 /* 16 bit data bus, synchronous transfers */ 10002 /* XXX these flags don't apply for FC */ 10003 if (is_fc == 0) 10004 inq_ptr->flags = SID_WBus16 | SID_Sync; 10005 /* 10006 * XXX KDM do we want to support tagged queueing on the control 10007 * device at all? 10008 */ 10009 if ((lun == NULL) 10010 || (lun->be_lun->lun_type != T_PROCESSOR)) 10011 inq_ptr->flags |= SID_CmdQue; 10012 /* 10013 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 10014 * We have 8 bytes for the vendor name, and 16 bytes for the device 10015 * name and 4 bytes for the revision. 10016 */ 10017 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 10018 strcpy(inq_ptr->vendor, CTL_VENDOR); 10019 } else { 10020 memset(inq_ptr->vendor, ' ', sizeof(inq_ptr->vendor)); 10021 strncpy(inq_ptr->vendor, val, 10022 min(sizeof(inq_ptr->vendor), strlen(val))); 10023 } 10024 if (lun == NULL) { 10025 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10026 } else if ((val = ctl_get_opt(lun->be_lun, "product")) == NULL) { 10027 switch (lun->be_lun->lun_type) { 10028 case T_DIRECT: 10029 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10030 break; 10031 case T_PROCESSOR: 10032 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 10033 break; 10034 default: 10035 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 10036 break; 10037 } 10038 } else { 10039 memset(inq_ptr->product, ' ', sizeof(inq_ptr->product)); 10040 strncpy(inq_ptr->product, val, 10041 min(sizeof(inq_ptr->product), strlen(val))); 10042 } 10043 10044 /* 10045 * XXX make this a macro somewhere so it automatically gets 10046 * incremented when we make changes. 10047 */ 10048 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "revision")) == NULL) { 10049 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 10050 } else { 10051 memset(inq_ptr->revision, ' ', sizeof(inq_ptr->revision)); 10052 strncpy(inq_ptr->revision, val, 10053 min(sizeof(inq_ptr->revision), strlen(val))); 10054 } 10055 10056 /* 10057 * For parallel SCSI, we support double transition and single 10058 * transition clocking. We also support QAS (Quick Arbitration 10059 * and Selection) and Information Unit transfers on both the 10060 * control and array devices. 10061 */ 10062 if (is_fc == 0) 10063 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 10064 SID_SPI_IUS; 10065 10066 /* SAM-3 */ 10067 scsi_ulto2b(0x0060, inq_ptr->version1); 10068 /* SPC-3 (no version claimed) XXX should we claim a version? */ 10069 scsi_ulto2b(0x0300, inq_ptr->version2); 10070 if (is_fc) { 10071 /* FCP-2 ANSI INCITS.350:2003 */ 10072 scsi_ulto2b(0x0917, inq_ptr->version3); 10073 } else { 10074 /* SPI-4 ANSI INCITS.362:200x */ 10075 scsi_ulto2b(0x0B56, inq_ptr->version3); 10076 } 10077 10078 if (lun == NULL) { 10079 /* SBC-2 (no version claimed) XXX should we claim a version? */ 10080 scsi_ulto2b(0x0320, inq_ptr->version4); 10081 } else { 10082 switch (lun->be_lun->lun_type) { 10083 case T_DIRECT: 10084 /* 10085 * SBC-2 (no version claimed) XXX should we claim a 10086 * version? 10087 */ 10088 scsi_ulto2b(0x0320, inq_ptr->version4); 10089 break; 10090 case T_PROCESSOR: 10091 default: 10092 break; 10093 } 10094 } 10095 10096 ctsio->scsi_status = SCSI_STATUS_OK; 10097 if (ctsio->kern_data_len > 0) { 10098 ctsio->be_move_done = ctl_config_move_done; 10099 ctl_datamove((union ctl_io *)ctsio); 10100 } else { 10101 ctsio->io_hdr.status = CTL_SUCCESS; 10102 ctl_done((union ctl_io *)ctsio); 10103 } 10104 10105 return (CTL_RETVAL_COMPLETE); 10106} 10107 10108int 10109ctl_inquiry(struct ctl_scsiio *ctsio) 10110{ 10111 struct scsi_inquiry *cdb; 10112 int retval; 10113 10114 cdb = (struct scsi_inquiry *)ctsio->cdb; 10115 10116 retval = 0; 10117 10118 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 10119 10120 /* 10121 * Right now, we don't support the CmdDt inquiry information. 10122 * This would be nice to support in the future. When we do 10123 * support it, we should change this test so that it checks to make 10124 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 10125 */ 10126#ifdef notyet 10127 if (((cdb->byte2 & SI_EVPD) 10128 && (cdb->byte2 & SI_CMDDT))) 10129#endif 10130 if (cdb->byte2 & SI_CMDDT) { 10131 /* 10132 * Point to the SI_CMDDT bit. We might change this 10133 * when we support SI_CMDDT, but since both bits would be 10134 * "wrong", this should probably just stay as-is then. 10135 */ 10136 ctl_set_invalid_field(ctsio, 10137 /*sks_valid*/ 1, 10138 /*command*/ 1, 10139 /*field*/ 1, 10140 /*bit_valid*/ 1, 10141 /*bit*/ 1); 10142 ctl_done((union ctl_io *)ctsio); 10143 return (CTL_RETVAL_COMPLETE); 10144 } 10145 if (cdb->byte2 & SI_EVPD) 10146 retval = ctl_inquiry_evpd(ctsio); 10147#ifdef notyet 10148 else if (cdb->byte2 & SI_CMDDT) 10149 retval = ctl_inquiry_cmddt(ctsio); 10150#endif 10151 else 10152 retval = ctl_inquiry_std(ctsio); 10153 10154 return (retval); 10155} 10156 10157/* 10158 * For known CDB types, parse the LBA and length. 10159 */ 10160static int 10161ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 10162{ 10163 if (io->io_hdr.io_type != CTL_IO_SCSI) 10164 return (1); 10165 10166 switch (io->scsiio.cdb[0]) { 10167 case COMPARE_AND_WRITE: { 10168 struct scsi_compare_and_write *cdb; 10169 10170 cdb = (struct scsi_compare_and_write *)io->scsiio.cdb; 10171 10172 *lba = scsi_8btou64(cdb->addr); 10173 *len = cdb->length; 10174 break; 10175 } 10176 case READ_6: 10177 case WRITE_6: { 10178 struct scsi_rw_6 *cdb; 10179 10180 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 10181 10182 *lba = scsi_3btoul(cdb->addr); 10183 /* only 5 bits are valid in the most significant address byte */ 10184 *lba &= 0x1fffff; 10185 *len = cdb->length; 10186 break; 10187 } 10188 case READ_10: 10189 case WRITE_10: { 10190 struct scsi_rw_10 *cdb; 10191 10192 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 10193 10194 *lba = scsi_4btoul(cdb->addr); 10195 *len = scsi_2btoul(cdb->length); 10196 break; 10197 } 10198 case WRITE_VERIFY_10: { 10199 struct scsi_write_verify_10 *cdb; 10200 10201 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 10202 10203 *lba = scsi_4btoul(cdb->addr); 10204 *len = scsi_2btoul(cdb->length); 10205 break; 10206 } 10207 case READ_12: 10208 case WRITE_12: { 10209 struct scsi_rw_12 *cdb; 10210 10211 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 10212 10213 *lba = scsi_4btoul(cdb->addr); 10214 *len = scsi_4btoul(cdb->length); 10215 break; 10216 } 10217 case WRITE_VERIFY_12: { 10218 struct scsi_write_verify_12 *cdb; 10219 10220 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 10221 10222 *lba = scsi_4btoul(cdb->addr); 10223 *len = scsi_4btoul(cdb->length); 10224 break; 10225 } 10226 case READ_16: 10227 case WRITE_16: { 10228 struct scsi_rw_16 *cdb; 10229 10230 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 10231 10232 *lba = scsi_8btou64(cdb->addr); 10233 *len = scsi_4btoul(cdb->length); 10234 break; 10235 } 10236 case WRITE_VERIFY_16: { 10237 struct scsi_write_verify_16 *cdb; 10238 10239 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 10240 10241 10242 *lba = scsi_8btou64(cdb->addr); 10243 *len = scsi_4btoul(cdb->length); 10244 break; 10245 } 10246 case WRITE_SAME_10: { 10247 struct scsi_write_same_10 *cdb; 10248 10249 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 10250 10251 *lba = scsi_4btoul(cdb->addr); 10252 *len = scsi_2btoul(cdb->length); 10253 break; 10254 } 10255 case WRITE_SAME_16: { 10256 struct scsi_write_same_16 *cdb; 10257 10258 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 10259 10260 *lba = scsi_8btou64(cdb->addr); 10261 *len = scsi_4btoul(cdb->length); 10262 break; 10263 } 10264 case VERIFY_10: { 10265 struct scsi_verify_10 *cdb; 10266 10267 cdb = (struct scsi_verify_10 *)io->scsiio.cdb; 10268 10269 *lba = scsi_4btoul(cdb->addr); 10270 *len = scsi_2btoul(cdb->length); 10271 break; 10272 } 10273 case VERIFY_12: { 10274 struct scsi_verify_12 *cdb; 10275 10276 cdb = (struct scsi_verify_12 *)io->scsiio.cdb; 10277 10278 *lba = scsi_4btoul(cdb->addr); 10279 *len = scsi_4btoul(cdb->length); 10280 break; 10281 } 10282 case VERIFY_16: { 10283 struct scsi_verify_16 *cdb; 10284 10285 cdb = (struct scsi_verify_16 *)io->scsiio.cdb; 10286 10287 *lba = scsi_8btou64(cdb->addr); 10288 *len = scsi_4btoul(cdb->length); 10289 break; 10290 } 10291 default: 10292 return (1); 10293 break; /* NOTREACHED */ 10294 } 10295 10296 return (0); 10297} 10298 10299static ctl_action 10300ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10301{ 10302 uint64_t endlba1, endlba2; 10303 10304 endlba1 = lba1 + len1 - 1; 10305 endlba2 = lba2 + len2 - 1; 10306 10307 if ((endlba1 < lba2) 10308 || (endlba2 < lba1)) 10309 return (CTL_ACTION_PASS); 10310 else 10311 return (CTL_ACTION_BLOCK); 10312} 10313 10314static ctl_action 10315ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10316{ 10317 uint64_t lba1, lba2; 10318 uint32_t len1, len2; 10319 int retval; 10320 10321 retval = ctl_get_lba_len(io1, &lba1, &len1); 10322 if (retval != 0) 10323 return (CTL_ACTION_ERROR); 10324 10325 retval = ctl_get_lba_len(io2, &lba2, &len2); 10326 if (retval != 0) 10327 return (CTL_ACTION_ERROR); 10328 10329 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10330} 10331 10332static ctl_action 10333ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10334{ 10335 struct ctl_cmd_entry *pending_entry, *ooa_entry; 10336 ctl_serialize_action *serialize_row; 10337 10338 /* 10339 * The initiator attempted multiple untagged commands at the same 10340 * time. Can't do that. 10341 */ 10342 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10343 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10344 && ((pending_io->io_hdr.nexus.targ_port == 10345 ooa_io->io_hdr.nexus.targ_port) 10346 && (pending_io->io_hdr.nexus.initid.id == 10347 ooa_io->io_hdr.nexus.initid.id)) 10348 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10349 return (CTL_ACTION_OVERLAP); 10350 10351 /* 10352 * The initiator attempted to send multiple tagged commands with 10353 * the same ID. (It's fine if different initiators have the same 10354 * tag ID.) 10355 * 10356 * Even if all of those conditions are true, we don't kill the I/O 10357 * if the command ahead of us has been aborted. We won't end up 10358 * sending it to the FETD, and it's perfectly legal to resend a 10359 * command with the same tag number as long as the previous 10360 * instance of this tag number has been aborted somehow. 10361 */ 10362 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10363 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10364 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10365 && ((pending_io->io_hdr.nexus.targ_port == 10366 ooa_io->io_hdr.nexus.targ_port) 10367 && (pending_io->io_hdr.nexus.initid.id == 10368 ooa_io->io_hdr.nexus.initid.id)) 10369 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10370 return (CTL_ACTION_OVERLAP_TAG); 10371 10372 /* 10373 * If we get a head of queue tag, SAM-3 says that we should 10374 * immediately execute it. 10375 * 10376 * What happens if this command would normally block for some other 10377 * reason? e.g. a request sense with a head of queue tag 10378 * immediately after a write. Normally that would block, but this 10379 * will result in its getting executed immediately... 10380 * 10381 * We currently return "pass" instead of "skip", so we'll end up 10382 * going through the rest of the queue to check for overlapped tags. 10383 * 10384 * XXX KDM check for other types of blockage first?? 10385 */ 10386 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10387 return (CTL_ACTION_PASS); 10388 10389 /* 10390 * Ordered tags have to block until all items ahead of them 10391 * have completed. If we get called with an ordered tag, we always 10392 * block, if something else is ahead of us in the queue. 10393 */ 10394 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10395 return (CTL_ACTION_BLOCK); 10396 10397 /* 10398 * Simple tags get blocked until all head of queue and ordered tags 10399 * ahead of them have completed. I'm lumping untagged commands in 10400 * with simple tags here. XXX KDM is that the right thing to do? 10401 */ 10402 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10403 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10404 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10405 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10406 return (CTL_ACTION_BLOCK); 10407 10408 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 10409 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 10410 10411 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10412 10413 switch (serialize_row[pending_entry->seridx]) { 10414 case CTL_SER_BLOCK: 10415 return (CTL_ACTION_BLOCK); 10416 break; /* NOTREACHED */ 10417 case CTL_SER_EXTENT: 10418 return (ctl_extent_check(pending_io, ooa_io)); 10419 break; /* NOTREACHED */ 10420 case CTL_SER_PASS: 10421 return (CTL_ACTION_PASS); 10422 break; /* NOTREACHED */ 10423 case CTL_SER_SKIP: 10424 return (CTL_ACTION_SKIP); 10425 break; 10426 default: 10427 panic("invalid serialization value %d", 10428 serialize_row[pending_entry->seridx]); 10429 break; /* NOTREACHED */ 10430 } 10431 10432 return (CTL_ACTION_ERROR); 10433} 10434 10435/* 10436 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10437 * Assumptions: 10438 * - pending_io is generally either incoming, or on the blocked queue 10439 * - starting I/O is the I/O we want to start the check with. 10440 */ 10441static ctl_action 10442ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10443 union ctl_io *starting_io) 10444{ 10445 union ctl_io *ooa_io; 10446 ctl_action action; 10447 10448 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 10449 10450 /* 10451 * Run back along the OOA queue, starting with the current 10452 * blocked I/O and going through every I/O before it on the 10453 * queue. If starting_io is NULL, we'll just end up returning 10454 * CTL_ACTION_PASS. 10455 */ 10456 for (ooa_io = starting_io; ooa_io != NULL; 10457 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10458 ooa_links)){ 10459 10460 /* 10461 * This routine just checks to see whether 10462 * cur_blocked is blocked by ooa_io, which is ahead 10463 * of it in the queue. It doesn't queue/dequeue 10464 * cur_blocked. 10465 */ 10466 action = ctl_check_for_blockage(pending_io, ooa_io); 10467 switch (action) { 10468 case CTL_ACTION_BLOCK: 10469 case CTL_ACTION_OVERLAP: 10470 case CTL_ACTION_OVERLAP_TAG: 10471 case CTL_ACTION_SKIP: 10472 case CTL_ACTION_ERROR: 10473 return (action); 10474 break; /* NOTREACHED */ 10475 case CTL_ACTION_PASS: 10476 break; 10477 default: 10478 panic("invalid action %d", action); 10479 break; /* NOTREACHED */ 10480 } 10481 } 10482 10483 return (CTL_ACTION_PASS); 10484} 10485 10486/* 10487 * Assumptions: 10488 * - An I/O has just completed, and has been removed from the per-LUN OOA 10489 * queue, so some items on the blocked queue may now be unblocked. 10490 */ 10491static int 10492ctl_check_blocked(struct ctl_lun *lun) 10493{ 10494 union ctl_io *cur_blocked, *next_blocked; 10495 10496 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 10497 10498 /* 10499 * Run forward from the head of the blocked queue, checking each 10500 * entry against the I/Os prior to it on the OOA queue to see if 10501 * there is still any blockage. 10502 * 10503 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10504 * with our removing a variable on it while it is traversing the 10505 * list. 10506 */ 10507 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10508 cur_blocked != NULL; cur_blocked = next_blocked) { 10509 union ctl_io *prev_ooa; 10510 ctl_action action; 10511 10512 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10513 blocked_links); 10514 10515 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10516 ctl_ooaq, ooa_links); 10517 10518 /* 10519 * If cur_blocked happens to be the first item in the OOA 10520 * queue now, prev_ooa will be NULL, and the action 10521 * returned will just be CTL_ACTION_PASS. 10522 */ 10523 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10524 10525 switch (action) { 10526 case CTL_ACTION_BLOCK: 10527 /* Nothing to do here, still blocked */ 10528 break; 10529 case CTL_ACTION_OVERLAP: 10530 case CTL_ACTION_OVERLAP_TAG: 10531 /* 10532 * This shouldn't happen! In theory we've already 10533 * checked this command for overlap... 10534 */ 10535 break; 10536 case CTL_ACTION_PASS: 10537 case CTL_ACTION_SKIP: { 10538 struct ctl_softc *softc; 10539 struct ctl_cmd_entry *entry; 10540 uint32_t initidx; 10541 uint8_t opcode; 10542 int isc_retval; 10543 10544 /* 10545 * The skip case shouldn't happen, this transaction 10546 * should have never made it onto the blocked queue. 10547 */ 10548 /* 10549 * This I/O is no longer blocked, we can remove it 10550 * from the blocked queue. Since this is a TAILQ 10551 * (doubly linked list), we can do O(1) removals 10552 * from any place on the list. 10553 */ 10554 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10555 blocked_links); 10556 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10557 10558 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10559 /* 10560 * Need to send IO back to original side to 10561 * run 10562 */ 10563 union ctl_ha_msg msg_info; 10564 10565 msg_info.hdr.original_sc = 10566 cur_blocked->io_hdr.original_sc; 10567 msg_info.hdr.serializing_sc = cur_blocked; 10568 msg_info.hdr.msg_type = CTL_MSG_R2R; 10569 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10570 &msg_info, sizeof(msg_info), 0)) > 10571 CTL_HA_STATUS_SUCCESS) { 10572 printf("CTL:Check Blocked error from " 10573 "ctl_ha_msg_send %d\n", 10574 isc_retval); 10575 } 10576 break; 10577 } 10578 opcode = cur_blocked->scsiio.cdb[0]; 10579 entry = &ctl_cmd_table[opcode]; 10580 softc = control_softc; 10581 10582 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10583 10584 /* 10585 * Check this I/O for LUN state changes that may 10586 * have happened while this command was blocked. 10587 * The LUN state may have been changed by a command 10588 * ahead of us in the queue, so we need to re-check 10589 * for any states that can be caused by SCSI 10590 * commands. 10591 */ 10592 if (ctl_scsiio_lun_check(softc, lun, entry, 10593 &cur_blocked->scsiio) == 0) { 10594 cur_blocked->io_hdr.flags |= 10595 CTL_FLAG_IS_WAS_ON_RTR; 10596 STAILQ_INSERT_TAIL(&lun->ctl_softc->rtr_queue, 10597 &cur_blocked->io_hdr, links); 10598 /* 10599 * In the non CTL_DONE_THREAD case, we need 10600 * to wake up the work thread here. When 10601 * we're processing completed requests from 10602 * the work thread context, we'll pop back 10603 * around and end up pulling things off the 10604 * RtR queue. When we aren't processing 10605 * things from the work thread context, 10606 * though, we won't ever check the RtR queue. 10607 * So we need to wake up the thread to clear 10608 * things off the queue. Otherwise this 10609 * transaction will just sit on the RtR queue 10610 * until a new I/O comes in. (Which may or 10611 * may not happen...) 10612 */ 10613#ifndef CTL_DONE_THREAD 10614 ctl_wakeup_thread(); 10615#endif 10616 } else 10617 ctl_done_lock(cur_blocked, /*have_lock*/ 1); 10618 break; 10619 } 10620 default: 10621 /* 10622 * This probably shouldn't happen -- we shouldn't 10623 * get CTL_ACTION_ERROR, or anything else. 10624 */ 10625 break; 10626 } 10627 } 10628 10629 return (CTL_RETVAL_COMPLETE); 10630} 10631 10632/* 10633 * This routine (with one exception) checks LUN flags that can be set by 10634 * commands ahead of us in the OOA queue. These flags have to be checked 10635 * when a command initially comes in, and when we pull a command off the 10636 * blocked queue and are preparing to execute it. The reason we have to 10637 * check these flags for commands on the blocked queue is that the LUN 10638 * state may have been changed by a command ahead of us while we're on the 10639 * blocked queue. 10640 * 10641 * Ordering is somewhat important with these checks, so please pay 10642 * careful attention to the placement of any new checks. 10643 */ 10644static int 10645ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10646 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10647{ 10648 int retval; 10649 10650 retval = 0; 10651 10652 /* 10653 * If this shelf is a secondary shelf controller, we have to reject 10654 * any media access commands. 10655 */ 10656#if 0 10657 /* No longer needed for HA */ 10658 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10659 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10660 ctl_set_lun_standby(ctsio); 10661 retval = 1; 10662 goto bailout; 10663 } 10664#endif 10665 10666 /* 10667 * Check for a reservation conflict. If this command isn't allowed 10668 * even on reserved LUNs, and if this initiator isn't the one who 10669 * reserved us, reject the command with a reservation conflict. 10670 */ 10671 if ((lun->flags & CTL_LUN_RESERVED) 10672 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10673 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10674 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10675 || (ctsio->io_hdr.nexus.targ_target.id != 10676 lun->rsv_nexus.targ_target.id)) { 10677 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10678 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10679 retval = 1; 10680 goto bailout; 10681 } 10682 } 10683 10684 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10685 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10686 uint32_t residx; 10687 10688 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10689 /* 10690 * if we aren't registered or it's a res holder type 10691 * reservation and this isn't the res holder then set a 10692 * conflict. 10693 * NOTE: Commands which might be allowed on write exclusive 10694 * type reservations are checked in the particular command 10695 * for a conflict. Read and SSU are the only ones. 10696 */ 10697 if (!lun->per_res[residx].registered 10698 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10699 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10700 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10701 retval = 1; 10702 goto bailout; 10703 } 10704 10705 } 10706 10707 if ((lun->flags & CTL_LUN_OFFLINE) 10708 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10709 ctl_set_lun_not_ready(ctsio); 10710 retval = 1; 10711 goto bailout; 10712 } 10713 10714 /* 10715 * If the LUN is stopped, see if this particular command is allowed 10716 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10717 */ 10718 if ((lun->flags & CTL_LUN_STOPPED) 10719 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10720 /* "Logical unit not ready, initializing cmd. required" */ 10721 ctl_set_lun_stopped(ctsio); 10722 retval = 1; 10723 goto bailout; 10724 } 10725 10726 if ((lun->flags & CTL_LUN_INOPERABLE) 10727 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10728 /* "Medium format corrupted" */ 10729 ctl_set_medium_format_corrupted(ctsio); 10730 retval = 1; 10731 goto bailout; 10732 } 10733 10734bailout: 10735 return (retval); 10736 10737} 10738 10739static void 10740ctl_failover_io(union ctl_io *io, int have_lock) 10741{ 10742 ctl_set_busy(&io->scsiio); 10743 ctl_done_lock(io, have_lock); 10744} 10745 10746static void 10747ctl_failover(void) 10748{ 10749 struct ctl_lun *lun; 10750 struct ctl_softc *ctl_softc; 10751 union ctl_io *next_io, *pending_io; 10752 union ctl_io *io; 10753 int lun_idx; 10754 int i; 10755 10756 ctl_softc = control_softc; 10757 10758 mtx_lock(&ctl_softc->ctl_lock); 10759 /* 10760 * Remove any cmds from the other SC from the rtr queue. These 10761 * will obviously only be for LUNs for which we're the primary. 10762 * We can't send status or get/send data for these commands. 10763 * Since they haven't been executed yet, we can just remove them. 10764 * We'll either abort them or delete them below, depending on 10765 * which HA mode we're in. 10766 */ 10767 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10768 io != NULL; io = next_io) { 10769 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10770 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10771 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10772 ctl_io_hdr, links); 10773 } 10774 10775 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10776 lun = ctl_softc->ctl_luns[lun_idx]; 10777 if (lun==NULL) 10778 continue; 10779 10780 /* 10781 * Processor LUNs are primary on both sides. 10782 * XXX will this always be true? 10783 */ 10784 if (lun->be_lun->lun_type == T_PROCESSOR) 10785 continue; 10786 10787 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10788 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10789 printf("FAILOVER: primary lun %d\n", lun_idx); 10790 /* 10791 * Remove all commands from the other SC. First from the 10792 * blocked queue then from the ooa queue. Once we have 10793 * removed them. Call ctl_check_blocked to see if there 10794 * is anything that can run. 10795 */ 10796 for (io = (union ctl_io *)TAILQ_FIRST( 10797 &lun->blocked_queue); io != NULL; io = next_io) { 10798 10799 next_io = (union ctl_io *)TAILQ_NEXT( 10800 &io->io_hdr, blocked_links); 10801 10802 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10803 TAILQ_REMOVE(&lun->blocked_queue, 10804 &io->io_hdr,blocked_links); 10805 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10806 TAILQ_REMOVE(&lun->ooa_queue, 10807 &io->io_hdr, ooa_links); 10808 10809 ctl_free_io(io); 10810 } 10811 } 10812 10813 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10814 io != NULL; io = next_io) { 10815 10816 next_io = (union ctl_io *)TAILQ_NEXT( 10817 &io->io_hdr, ooa_links); 10818 10819 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10820 10821 TAILQ_REMOVE(&lun->ooa_queue, 10822 &io->io_hdr, 10823 ooa_links); 10824 10825 ctl_free_io(io); 10826 } 10827 } 10828 ctl_check_blocked(lun); 10829 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10830 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10831 10832 printf("FAILOVER: primary lun %d\n", lun_idx); 10833 /* 10834 * Abort all commands from the other SC. We can't 10835 * send status back for them now. These should get 10836 * cleaned up when they are completed or come out 10837 * for a datamove operation. 10838 */ 10839 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10840 io != NULL; io = next_io) { 10841 next_io = (union ctl_io *)TAILQ_NEXT( 10842 &io->io_hdr, ooa_links); 10843 10844 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10845 io->io_hdr.flags |= CTL_FLAG_ABORT; 10846 } 10847 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10848 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10849 10850 printf("FAILOVER: secondary lun %d\n", lun_idx); 10851 10852 lun->flags |= CTL_LUN_PRIMARY_SC; 10853 10854 /* 10855 * We send all I/O that was sent to this controller 10856 * and redirected to the other side back with 10857 * busy status, and have the initiator retry it. 10858 * Figuring out how much data has been transferred, 10859 * etc. and picking up where we left off would be 10860 * very tricky. 10861 * 10862 * XXX KDM need to remove I/O from the blocked 10863 * queue as well! 10864 */ 10865 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10866 &lun->ooa_queue); pending_io != NULL; 10867 pending_io = next_io) { 10868 10869 next_io = (union ctl_io *)TAILQ_NEXT( 10870 &pending_io->io_hdr, ooa_links); 10871 10872 pending_io->io_hdr.flags &= 10873 ~CTL_FLAG_SENT_2OTHER_SC; 10874 10875 if (pending_io->io_hdr.flags & 10876 CTL_FLAG_IO_ACTIVE) { 10877 pending_io->io_hdr.flags |= 10878 CTL_FLAG_FAILOVER; 10879 } else { 10880 ctl_set_busy(&pending_io->scsiio); 10881 ctl_done_lock(pending_io, 10882 /*have_lock*/1); 10883 } 10884 } 10885 10886 /* 10887 * Build Unit Attention 10888 */ 10889 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10890 lun->pending_sense[i].ua_pending |= 10891 CTL_UA_ASYM_ACC_CHANGE; 10892 } 10893 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10894 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10895 printf("FAILOVER: secondary lun %d\n", lun_idx); 10896 /* 10897 * if the first io on the OOA is not on the RtR queue 10898 * add it. 10899 */ 10900 lun->flags |= CTL_LUN_PRIMARY_SC; 10901 10902 pending_io = (union ctl_io *)TAILQ_FIRST( 10903 &lun->ooa_queue); 10904 if (pending_io==NULL) { 10905 printf("Nothing on OOA queue\n"); 10906 continue; 10907 } 10908 10909 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10910 if ((pending_io->io_hdr.flags & 10911 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10912 pending_io->io_hdr.flags |= 10913 CTL_FLAG_IS_WAS_ON_RTR; 10914 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 10915 &pending_io->io_hdr, links); 10916 } 10917#if 0 10918 else 10919 { 10920 printf("Tag 0x%04x is running\n", 10921 pending_io->scsiio.tag_num); 10922 } 10923#endif 10924 10925 next_io = (union ctl_io *)TAILQ_NEXT( 10926 &pending_io->io_hdr, ooa_links); 10927 for (pending_io=next_io; pending_io != NULL; 10928 pending_io = next_io) { 10929 pending_io->io_hdr.flags &= 10930 ~CTL_FLAG_SENT_2OTHER_SC; 10931 next_io = (union ctl_io *)TAILQ_NEXT( 10932 &pending_io->io_hdr, ooa_links); 10933 if (pending_io->io_hdr.flags & 10934 CTL_FLAG_IS_WAS_ON_RTR) { 10935#if 0 10936 printf("Tag 0x%04x is running\n", 10937 pending_io->scsiio.tag_num); 10938#endif 10939 continue; 10940 } 10941 10942 switch (ctl_check_ooa(lun, pending_io, 10943 (union ctl_io *)TAILQ_PREV( 10944 &pending_io->io_hdr, ctl_ooaq, 10945 ooa_links))) { 10946 10947 case CTL_ACTION_BLOCK: 10948 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10949 &pending_io->io_hdr, 10950 blocked_links); 10951 pending_io->io_hdr.flags |= 10952 CTL_FLAG_BLOCKED; 10953 break; 10954 case CTL_ACTION_PASS: 10955 case CTL_ACTION_SKIP: 10956 pending_io->io_hdr.flags |= 10957 CTL_FLAG_IS_WAS_ON_RTR; 10958 STAILQ_INSERT_TAIL( 10959 &ctl_softc->rtr_queue, 10960 &pending_io->io_hdr, links); 10961 break; 10962 case CTL_ACTION_OVERLAP: 10963 ctl_set_overlapped_cmd( 10964 (struct ctl_scsiio *)pending_io); 10965 ctl_done_lock(pending_io, 10966 /*have_lock*/ 1); 10967 break; 10968 case CTL_ACTION_OVERLAP_TAG: 10969 ctl_set_overlapped_tag( 10970 (struct ctl_scsiio *)pending_io, 10971 pending_io->scsiio.tag_num & 0xff); 10972 ctl_done_lock(pending_io, 10973 /*have_lock*/ 1); 10974 break; 10975 case CTL_ACTION_ERROR: 10976 default: 10977 ctl_set_internal_failure( 10978 (struct ctl_scsiio *)pending_io, 10979 0, // sks_valid 10980 0); //retry count 10981 ctl_done_lock(pending_io, 10982 /*have_lock*/ 1); 10983 break; 10984 } 10985 } 10986 10987 /* 10988 * Build Unit Attention 10989 */ 10990 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10991 lun->pending_sense[i].ua_pending |= 10992 CTL_UA_ASYM_ACC_CHANGE; 10993 } 10994 } else { 10995 panic("Unhandled HA mode failover, LUN flags = %#x, " 10996 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10997 } 10998 } 10999 ctl_pause_rtr = 0; 11000 mtx_unlock(&ctl_softc->ctl_lock); 11001} 11002 11003static int 11004ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 11005{ 11006 struct ctl_lun *lun; 11007 struct ctl_cmd_entry *entry; 11008 uint8_t opcode; 11009 uint32_t initidx, targ_lun; 11010 int retval; 11011 11012 retval = 0; 11013 11014 lun = NULL; 11015 11016 opcode = ctsio->cdb[0]; 11017 11018 mtx_lock(&ctl_softc->ctl_lock); 11019 11020 targ_lun = ctsio->io_hdr.nexus.targ_lun; 11021 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 11022 targ_lun = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, targ_lun); 11023 if ((targ_lun < CTL_MAX_LUNS) 11024 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 11025 lun = ctl_softc->ctl_luns[targ_lun]; 11026 /* 11027 * If the LUN is invalid, pretend that it doesn't exist. 11028 * It will go away as soon as all pending I/O has been 11029 * completed. 11030 */ 11031 if (lun->flags & CTL_LUN_DISABLED) { 11032 lun = NULL; 11033 } else { 11034 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 11035 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 11036 lun->be_lun; 11037 if (lun->be_lun->lun_type == T_PROCESSOR) { 11038 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 11039 } 11040 } 11041 } else { 11042 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 11043 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 11044 } 11045 11046 entry = &ctl_cmd_table[opcode]; 11047 11048 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 11049 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 11050 11051 /* 11052 * Check to see whether we can send this command to LUNs that don't 11053 * exist. This should pretty much only be the case for inquiry 11054 * and request sense. Further checks, below, really require having 11055 * a LUN, so we can't really check the command anymore. Just put 11056 * it on the rtr queue. 11057 */ 11058 if (lun == NULL) { 11059 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11060 goto queue_rtr; 11061 11062 ctl_set_unsupported_lun(ctsio); 11063 mtx_unlock(&ctl_softc->ctl_lock); 11064 ctl_done((union ctl_io *)ctsio); 11065 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 11066 goto bailout; 11067 } else { 11068 /* 11069 * Every I/O goes into the OOA queue for a particular LUN, and 11070 * stays there until completion. 11071 */ 11072 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 11073 11074 /* 11075 * Make sure we support this particular command on this LUN. 11076 * e.g., we don't support writes to the control LUN. 11077 */ 11078 switch (lun->be_lun->lun_type) { 11079 case T_PROCESSOR: 11080 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 11081 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11082 == 0)) { 11083 ctl_set_invalid_opcode(ctsio); 11084 mtx_unlock(&ctl_softc->ctl_lock); 11085 ctl_done((union ctl_io *)ctsio); 11086 goto bailout; 11087 } 11088 break; 11089 case T_DIRECT: 11090 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 11091 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11092 == 0)){ 11093 ctl_set_invalid_opcode(ctsio); 11094 mtx_unlock(&ctl_softc->ctl_lock); 11095 ctl_done((union ctl_io *)ctsio); 11096 goto bailout; 11097 } 11098 break; 11099 default: 11100 printf("Unsupported CTL LUN type %d\n", 11101 lun->be_lun->lun_type); 11102 panic("Unsupported CTL LUN type %d\n", 11103 lun->be_lun->lun_type); 11104 break; /* NOTREACHED */ 11105 } 11106 } 11107 11108 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 11109 11110 /* 11111 * If we've got a request sense, it'll clear the contingent 11112 * allegiance condition. Otherwise, if we have a CA condition for 11113 * this initiator, clear it, because it sent down a command other 11114 * than request sense. 11115 */ 11116 if ((opcode != REQUEST_SENSE) 11117 && (ctl_is_set(lun->have_ca, initidx))) 11118 ctl_clear_mask(lun->have_ca, initidx); 11119 11120 /* 11121 * If the command has this flag set, it handles its own unit 11122 * attention reporting, we shouldn't do anything. Otherwise we 11123 * check for any pending unit attentions, and send them back to the 11124 * initiator. We only do this when a command initially comes in, 11125 * not when we pull it off the blocked queue. 11126 * 11127 * According to SAM-3, section 5.3.2, the order that things get 11128 * presented back to the host is basically unit attentions caused 11129 * by some sort of reset event, busy status, reservation conflicts 11130 * or task set full, and finally any other status. 11131 * 11132 * One issue here is that some of the unit attentions we report 11133 * don't fall into the "reset" category (e.g. "reported luns data 11134 * has changed"). So reporting it here, before the reservation 11135 * check, may be technically wrong. I guess the only thing to do 11136 * would be to check for and report the reset events here, and then 11137 * check for the other unit attention types after we check for a 11138 * reservation conflict. 11139 * 11140 * XXX KDM need to fix this 11141 */ 11142 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 11143 ctl_ua_type ua_type; 11144 11145 ua_type = lun->pending_sense[initidx].ua_pending; 11146 if (ua_type != CTL_UA_NONE) { 11147 scsi_sense_data_type sense_format; 11148 11149 if (lun != NULL) 11150 sense_format = (lun->flags & 11151 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 11152 SSD_TYPE_FIXED; 11153 else 11154 sense_format = SSD_TYPE_FIXED; 11155 11156 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 11157 sense_format); 11158 if (ua_type != CTL_UA_NONE) { 11159 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 11160 ctsio->io_hdr.status = CTL_SCSI_ERROR | 11161 CTL_AUTOSENSE; 11162 ctsio->sense_len = SSD_FULL_SIZE; 11163 lun->pending_sense[initidx].ua_pending &= 11164 ~ua_type; 11165 mtx_unlock(&ctl_softc->ctl_lock); 11166 ctl_done((union ctl_io *)ctsio); 11167 goto bailout; 11168 } 11169 } 11170 } 11171 11172 11173 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 11174 mtx_unlock(&ctl_softc->ctl_lock); 11175 ctl_done((union ctl_io *)ctsio); 11176 goto bailout; 11177 } 11178 11179 /* 11180 * XXX CHD this is where we want to send IO to other side if 11181 * this LUN is secondary on this SC. We will need to make a copy 11182 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 11183 * the copy we send as FROM_OTHER. 11184 * We also need to stuff the address of the original IO so we can 11185 * find it easily. Something similar will need be done on the other 11186 * side so when we are done we can find the copy. 11187 */ 11188 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 11189 union ctl_ha_msg msg_info; 11190 int isc_retval; 11191 11192 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11193 11194 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 11195 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 11196#if 0 11197 printf("1. ctsio %p\n", ctsio); 11198#endif 11199 msg_info.hdr.serializing_sc = NULL; 11200 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 11201 msg_info.scsi.tag_num = ctsio->tag_num; 11202 msg_info.scsi.tag_type = ctsio->tag_type; 11203 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 11204 11205 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11206 11207 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11208 (void *)&msg_info, sizeof(msg_info), 0)) > 11209 CTL_HA_STATUS_SUCCESS) { 11210 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 11211 isc_retval); 11212 printf("CTL:opcode is %x\n",opcode); 11213 } else { 11214#if 0 11215 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 11216#endif 11217 } 11218 11219 /* 11220 * XXX KDM this I/O is off the incoming queue, but hasn't 11221 * been inserted on any other queue. We may need to come 11222 * up with a holding queue while we wait for serialization 11223 * so that we have an idea of what we're waiting for from 11224 * the other side. 11225 */ 11226 goto bailout_unlock; 11227 } 11228 11229 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 11230 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 11231 ctl_ooaq, ooa_links))) { 11232 case CTL_ACTION_BLOCK: 11233 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 11234 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 11235 blocked_links); 11236 goto bailout_unlock; 11237 break; /* NOTREACHED */ 11238 case CTL_ACTION_PASS: 11239 case CTL_ACTION_SKIP: 11240 goto queue_rtr; 11241 break; /* NOTREACHED */ 11242 case CTL_ACTION_OVERLAP: 11243 ctl_set_overlapped_cmd(ctsio); 11244 mtx_unlock(&ctl_softc->ctl_lock); 11245 ctl_done((union ctl_io *)ctsio); 11246 goto bailout; 11247 break; /* NOTREACHED */ 11248 case CTL_ACTION_OVERLAP_TAG: 11249 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 11250 mtx_unlock(&ctl_softc->ctl_lock); 11251 ctl_done((union ctl_io *)ctsio); 11252 goto bailout; 11253 break; /* NOTREACHED */ 11254 case CTL_ACTION_ERROR: 11255 default: 11256 ctl_set_internal_failure(ctsio, 11257 /*sks_valid*/ 0, 11258 /*retry_count*/ 0); 11259 mtx_unlock(&ctl_softc->ctl_lock); 11260 ctl_done((union ctl_io *)ctsio); 11261 goto bailout; 11262 break; /* NOTREACHED */ 11263 } 11264 11265 goto bailout_unlock; 11266 11267queue_rtr: 11268 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11269 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, &ctsio->io_hdr, links); 11270 11271bailout_unlock: 11272 mtx_unlock(&ctl_softc->ctl_lock); 11273 11274bailout: 11275 return (retval); 11276} 11277 11278static int 11279ctl_scsiio(struct ctl_scsiio *ctsio) 11280{ 11281 int retval; 11282 struct ctl_cmd_entry *entry; 11283 11284 retval = CTL_RETVAL_COMPLETE; 11285 11286 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 11287 11288 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11289 11290 /* 11291 * If this I/O has been aborted, just send it straight to 11292 * ctl_done() without executing it. 11293 */ 11294 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11295 ctl_done((union ctl_io *)ctsio); 11296 goto bailout; 11297 } 11298 11299 /* 11300 * All the checks should have been handled by ctl_scsiio_precheck(). 11301 * We should be clear now to just execute the I/O. 11302 */ 11303 retval = entry->execute(ctsio); 11304 11305bailout: 11306 return (retval); 11307} 11308 11309/* 11310 * Since we only implement one target right now, a bus reset simply resets 11311 * our single target. 11312 */ 11313static int 11314ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11315{ 11316 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11317} 11318 11319static int 11320ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11321 ctl_ua_type ua_type) 11322{ 11323 struct ctl_lun *lun; 11324 int retval; 11325 11326 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11327 union ctl_ha_msg msg_info; 11328 11329 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11330 msg_info.hdr.nexus = io->io_hdr.nexus; 11331 if (ua_type==CTL_UA_TARG_RESET) 11332 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11333 else 11334 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11335 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11336 msg_info.hdr.original_sc = NULL; 11337 msg_info.hdr.serializing_sc = NULL; 11338 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11339 (void *)&msg_info, sizeof(msg_info), 0)) { 11340 } 11341 } 11342 retval = 0; 11343 11344 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11345 retval += ctl_lun_reset(lun, io, ua_type); 11346 11347 return (retval); 11348} 11349 11350/* 11351 * The LUN should always be set. The I/O is optional, and is used to 11352 * distinguish between I/Os sent by this initiator, and by other 11353 * initiators. We set unit attention for initiators other than this one. 11354 * SAM-3 is vague on this point. It does say that a unit attention should 11355 * be established for other initiators when a LUN is reset (see section 11356 * 5.7.3), but it doesn't specifically say that the unit attention should 11357 * be established for this particular initiator when a LUN is reset. Here 11358 * is the relevant text, from SAM-3 rev 8: 11359 * 11360 * 5.7.2 When a SCSI initiator port aborts its own tasks 11361 * 11362 * When a SCSI initiator port causes its own task(s) to be aborted, no 11363 * notification that the task(s) have been aborted shall be returned to 11364 * the SCSI initiator port other than the completion response for the 11365 * command or task management function action that caused the task(s) to 11366 * be aborted and notification(s) associated with related effects of the 11367 * action (e.g., a reset unit attention condition). 11368 * 11369 * XXX KDM for now, we're setting unit attention for all initiators. 11370 */ 11371static int 11372ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11373{ 11374 union ctl_io *xio; 11375#if 0 11376 uint32_t initindex; 11377#endif 11378 int i; 11379 11380 /* 11381 * Run through the OOA queue and abort each I/O. 11382 */ 11383#if 0 11384 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11385#endif 11386 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11387 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11388 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11389 } 11390 11391 /* 11392 * This version sets unit attention for every 11393 */ 11394#if 0 11395 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11396 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11397 if (initindex == i) 11398 continue; 11399 lun->pending_sense[i].ua_pending |= ua_type; 11400 } 11401#endif 11402 11403 /* 11404 * A reset (any kind, really) clears reservations established with 11405 * RESERVE/RELEASE. It does not clear reservations established 11406 * with PERSISTENT RESERVE OUT, but we don't support that at the 11407 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11408 * reservations made with the RESERVE/RELEASE commands, because 11409 * those commands are obsolete in SPC-3. 11410 */ 11411 lun->flags &= ~CTL_LUN_RESERVED; 11412 11413 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11414 ctl_clear_mask(lun->have_ca, i); 11415 lun->pending_sense[i].ua_pending |= ua_type; 11416 } 11417 11418 return (0); 11419} 11420 11421static int 11422ctl_abort_task(union ctl_io *io) 11423{ 11424 union ctl_io *xio; 11425 struct ctl_lun *lun; 11426 struct ctl_softc *ctl_softc; 11427#if 0 11428 struct sbuf sb; 11429 char printbuf[128]; 11430#endif 11431 int found; 11432 uint32_t targ_lun; 11433 11434 ctl_softc = control_softc; 11435 found = 0; 11436 11437 /* 11438 * Look up the LUN. 11439 */ 11440 targ_lun = io->io_hdr.nexus.targ_lun; 11441 if (io->io_hdr.nexus.lun_map_fn != NULL) 11442 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11443 if ((targ_lun < CTL_MAX_LUNS) 11444 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11445 lun = ctl_softc->ctl_luns[targ_lun]; 11446 else 11447 goto bailout; 11448 11449#if 0 11450 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11451 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11452#endif 11453 11454 /* 11455 * Run through the OOA queue and attempt to find the given I/O. 11456 * The target port, initiator ID, tag type and tag number have to 11457 * match the values that we got from the initiator. If we have an 11458 * untagged command to abort, simply abort the first untagged command 11459 * we come to. We only allow one untagged command at a time of course. 11460 */ 11461#if 0 11462 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11463#endif 11464 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11465 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11466#if 0 11467 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11468 11469 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11470 lun->lun, xio->scsiio.tag_num, 11471 xio->scsiio.tag_type, 11472 (xio->io_hdr.blocked_links.tqe_prev 11473 == NULL) ? "" : " BLOCKED", 11474 (xio->io_hdr.flags & 11475 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11476 (xio->io_hdr.flags & 11477 CTL_FLAG_ABORT) ? " ABORT" : "", 11478 (xio->io_hdr.flags & 11479 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11480 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11481 sbuf_finish(&sb); 11482 printf("%s\n", sbuf_data(&sb)); 11483#endif 11484 11485 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11486 && (xio->io_hdr.nexus.initid.id == 11487 io->io_hdr.nexus.initid.id)) { 11488 /* 11489 * If the abort says that the task is untagged, the 11490 * task in the queue must be untagged. Otherwise, 11491 * we just check to see whether the tag numbers 11492 * match. This is because the QLogic firmware 11493 * doesn't pass back the tag type in an abort 11494 * request. 11495 */ 11496#if 0 11497 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11498 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11499 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11500#endif 11501 /* 11502 * XXX KDM we've got problems with FC, because it 11503 * doesn't send down a tag type with aborts. So we 11504 * can only really go by the tag number... 11505 * This may cause problems with parallel SCSI. 11506 * Need to figure that out!! 11507 */ 11508 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11509 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11510 found = 1; 11511 if ((io->io_hdr.flags & 11512 CTL_FLAG_FROM_OTHER_SC) == 0 && 11513 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11514 union ctl_ha_msg msg_info; 11515 11516 io->io_hdr.flags |= 11517 CTL_FLAG_SENT_2OTHER_SC; 11518 msg_info.hdr.nexus = io->io_hdr.nexus; 11519 msg_info.task.task_action = 11520 CTL_TASK_ABORT_TASK; 11521 msg_info.task.tag_num = 11522 io->taskio.tag_num; 11523 msg_info.task.tag_type = 11524 io->taskio.tag_type; 11525 msg_info.hdr.msg_type = 11526 CTL_MSG_MANAGE_TASKS; 11527 msg_info.hdr.original_sc = NULL; 11528 msg_info.hdr.serializing_sc = NULL; 11529#if 0 11530 printf("Sent Abort to other side\n"); 11531#endif 11532 if (CTL_HA_STATUS_SUCCESS != 11533 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11534 (void *)&msg_info, 11535 sizeof(msg_info), 0)) { 11536 } 11537 } 11538#if 0 11539 printf("ctl_abort_task: found I/O to abort\n"); 11540#endif 11541 break; 11542 } 11543 } 11544 } 11545 11546bailout: 11547 11548 if (found == 0) { 11549 /* 11550 * This isn't really an error. It's entirely possible for 11551 * the abort and command completion to cross on the wire. 11552 * This is more of an informative/diagnostic error. 11553 */ 11554#if 0 11555 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11556 "%d:%d:%d:%d tag %d type %d\n", 11557 io->io_hdr.nexus.initid.id, 11558 io->io_hdr.nexus.targ_port, 11559 io->io_hdr.nexus.targ_target.id, 11560 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11561 io->taskio.tag_type); 11562#endif 11563 return (1); 11564 } else 11565 return (0); 11566} 11567 11568/* 11569 * This routine cannot block! It must be callable from an interrupt 11570 * handler as well as from the work thread. 11571 */ 11572static void 11573ctl_run_task_queue(struct ctl_softc *ctl_softc) 11574{ 11575 union ctl_io *io, *next_io; 11576 11577 mtx_assert(&ctl_softc->ctl_lock, MA_OWNED); 11578 11579 CTL_DEBUG_PRINT(("ctl_run_task_queue\n")); 11580 11581 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->task_queue); 11582 io != NULL; io = next_io) { 11583 int retval; 11584 const char *task_desc; 11585 11586 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 11587 11588 retval = 0; 11589 11590 switch (io->io_hdr.io_type) { 11591 case CTL_IO_TASK: { 11592 task_desc = ctl_scsi_task_string(&io->taskio); 11593 if (task_desc != NULL) { 11594#ifdef NEEDTOPORT 11595 csevent_log(CSC_CTL | CSC_SHELF_SW | 11596 CTL_TASK_REPORT, 11597 csevent_LogType_Trace, 11598 csevent_Severity_Information, 11599 csevent_AlertLevel_Green, 11600 csevent_FRU_Firmware, 11601 csevent_FRU_Unknown, 11602 "CTL: received task: %s",task_desc); 11603#endif 11604 } else { 11605#ifdef NEEDTOPORT 11606 csevent_log(CSC_CTL | CSC_SHELF_SW | 11607 CTL_TASK_REPORT, 11608 csevent_LogType_Trace, 11609 csevent_Severity_Information, 11610 csevent_AlertLevel_Green, 11611 csevent_FRU_Firmware, 11612 csevent_FRU_Unknown, 11613 "CTL: received unknown task " 11614 "type: %d (%#x)", 11615 io->taskio.task_action, 11616 io->taskio.task_action); 11617#endif 11618 } 11619 switch (io->taskio.task_action) { 11620 case CTL_TASK_ABORT_TASK: 11621 retval = ctl_abort_task(io); 11622 break; 11623 case CTL_TASK_ABORT_TASK_SET: 11624 break; 11625 case CTL_TASK_CLEAR_ACA: 11626 break; 11627 case CTL_TASK_CLEAR_TASK_SET: 11628 break; 11629 case CTL_TASK_LUN_RESET: { 11630 struct ctl_lun *lun; 11631 uint32_t targ_lun; 11632 int retval; 11633 11634 targ_lun = io->io_hdr.nexus.targ_lun; 11635 if (io->io_hdr.nexus.lun_map_fn != NULL) 11636 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11637 11638 if ((targ_lun < CTL_MAX_LUNS) 11639 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11640 lun = ctl_softc->ctl_luns[targ_lun]; 11641 else { 11642 retval = 1; 11643 break; 11644 } 11645 11646 if (!(io->io_hdr.flags & 11647 CTL_FLAG_FROM_OTHER_SC)) { 11648 union ctl_ha_msg msg_info; 11649 11650 io->io_hdr.flags |= 11651 CTL_FLAG_SENT_2OTHER_SC; 11652 msg_info.hdr.msg_type = 11653 CTL_MSG_MANAGE_TASKS; 11654 msg_info.hdr.nexus = io->io_hdr.nexus; 11655 msg_info.task.task_action = 11656 CTL_TASK_LUN_RESET; 11657 msg_info.hdr.original_sc = NULL; 11658 msg_info.hdr.serializing_sc = NULL; 11659 if (CTL_HA_STATUS_SUCCESS != 11660 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11661 (void *)&msg_info, 11662 sizeof(msg_info), 0)) { 11663 } 11664 } 11665 11666 retval = ctl_lun_reset(lun, io, 11667 CTL_UA_LUN_RESET); 11668 break; 11669 } 11670 case CTL_TASK_TARGET_RESET: 11671 retval = ctl_target_reset(ctl_softc, io, 11672 CTL_UA_TARG_RESET); 11673 break; 11674 case CTL_TASK_BUS_RESET: 11675 retval = ctl_bus_reset(ctl_softc, io); 11676 break; 11677 case CTL_TASK_PORT_LOGIN: 11678 break; 11679 case CTL_TASK_PORT_LOGOUT: 11680 break; 11681 default: 11682 printf("ctl_run_task_queue: got unknown task " 11683 "management event %d\n", 11684 io->taskio.task_action); 11685 break; 11686 } 11687 if (retval == 0) 11688 io->io_hdr.status = CTL_SUCCESS; 11689 else 11690 io->io_hdr.status = CTL_ERROR; 11691 11692 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11693 ctl_io_hdr, links); 11694 /* 11695 * This will queue this I/O to the done queue, but the 11696 * work thread won't be able to process it until we 11697 * return and the lock is released. 11698 */ 11699 ctl_done_lock(io, /*have_lock*/ 1); 11700 break; 11701 } 11702 default: { 11703 11704 printf("%s: invalid I/O type %d msg %d cdb %x" 11705 " iptl: %ju:%d:%ju:%d tag 0x%04x\n", 11706 __func__, io->io_hdr.io_type, 11707 io->io_hdr.msg_type, io->scsiio.cdb[0], 11708 (uintmax_t)io->io_hdr.nexus.initid.id, 11709 io->io_hdr.nexus.targ_port, 11710 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11711 io->io_hdr.nexus.targ_lun /* XXX */, 11712 (io->io_hdr.io_type == CTL_IO_TASK) ? 11713 io->taskio.tag_num : io->scsiio.tag_num); 11714 STAILQ_REMOVE(&ctl_softc->task_queue, &io->io_hdr, 11715 ctl_io_hdr, links); 11716 ctl_free_io(io); 11717 break; 11718 } 11719 } 11720 } 11721 11722 ctl_softc->flags &= ~CTL_FLAG_TASK_PENDING; 11723} 11724 11725/* 11726 * For HA operation. Handle commands that come in from the other 11727 * controller. 11728 */ 11729static void 11730ctl_handle_isc(union ctl_io *io) 11731{ 11732 int free_io; 11733 struct ctl_lun *lun; 11734 struct ctl_softc *ctl_softc; 11735 uint32_t targ_lun; 11736 11737 ctl_softc = control_softc; 11738 11739 targ_lun = io->io_hdr.nexus.targ_lun; 11740 if (io->io_hdr.nexus.lun_map_fn != NULL) 11741 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 11742 lun = ctl_softc->ctl_luns[targ_lun]; 11743 11744 switch (io->io_hdr.msg_type) { 11745 case CTL_MSG_SERIALIZE: 11746 free_io = ctl_serialize_other_sc_cmd(&io->scsiio, 11747 /*have_lock*/ 0); 11748 break; 11749 case CTL_MSG_R2R: { 11750 uint8_t opcode; 11751 struct ctl_cmd_entry *entry; 11752 11753 /* 11754 * This is only used in SER_ONLY mode. 11755 */ 11756 free_io = 0; 11757 opcode = io->scsiio.cdb[0]; 11758 entry = &ctl_cmd_table[opcode]; 11759 mtx_lock(&ctl_softc->ctl_lock); 11760 if (ctl_scsiio_lun_check(ctl_softc, lun, 11761 entry, (struct ctl_scsiio *)io) != 0) { 11762 ctl_done_lock(io, /*have_lock*/ 1); 11763 mtx_unlock(&ctl_softc->ctl_lock); 11764 break; 11765 } 11766 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11767 STAILQ_INSERT_TAIL(&ctl_softc->rtr_queue, 11768 &io->io_hdr, links); 11769 mtx_unlock(&ctl_softc->ctl_lock); 11770 break; 11771 } 11772 case CTL_MSG_FINISH_IO: 11773 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11774 free_io = 0; 11775 ctl_done_lock(io, /*have_lock*/ 0); 11776 } else { 11777 free_io = 1; 11778 mtx_lock(&ctl_softc->ctl_lock); 11779 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11780 ooa_links); 11781 STAILQ_REMOVE(&ctl_softc->task_queue, 11782 &io->io_hdr, ctl_io_hdr, links); 11783 ctl_check_blocked(lun); 11784 mtx_unlock(&ctl_softc->ctl_lock); 11785 } 11786 break; 11787 case CTL_MSG_PERS_ACTION: 11788 ctl_hndl_per_res_out_on_other_sc( 11789 (union ctl_ha_msg *)&io->presio.pr_msg); 11790 free_io = 1; 11791 break; 11792 case CTL_MSG_BAD_JUJU: 11793 free_io = 0; 11794 ctl_done_lock(io, /*have_lock*/ 0); 11795 break; 11796 case CTL_MSG_DATAMOVE: 11797 /* Only used in XFER mode */ 11798 free_io = 0; 11799 ctl_datamove_remote(io); 11800 break; 11801 case CTL_MSG_DATAMOVE_DONE: 11802 /* Only used in XFER mode */ 11803 free_io = 0; 11804 io->scsiio.be_move_done(io); 11805 break; 11806 default: 11807 free_io = 1; 11808 printf("%s: Invalid message type %d\n", 11809 __func__, io->io_hdr.msg_type); 11810 break; 11811 } 11812 if (free_io) 11813 ctl_free_io(io); 11814 11815} 11816 11817 11818/* 11819 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11820 * there is no match. 11821 */ 11822static ctl_lun_error_pattern 11823ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11824{ 11825 struct ctl_cmd_entry *entry; 11826 ctl_lun_error_pattern filtered_pattern, pattern; 11827 uint8_t opcode; 11828 11829 pattern = desc->error_pattern; 11830 11831 /* 11832 * XXX KDM we need more data passed into this function to match a 11833 * custom pattern, and we actually need to implement custom pattern 11834 * matching. 11835 */ 11836 if (pattern & CTL_LUN_PAT_CMD) 11837 return (CTL_LUN_PAT_CMD); 11838 11839 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11840 return (CTL_LUN_PAT_ANY); 11841 11842 opcode = ctsio->cdb[0]; 11843 entry = &ctl_cmd_table[opcode]; 11844 11845 filtered_pattern = entry->pattern & pattern; 11846 11847 /* 11848 * If the user requested specific flags in the pattern (e.g. 11849 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11850 * flags. 11851 * 11852 * If the user did not specify any flags, it doesn't matter whether 11853 * or not the command supports the flags. 11854 */ 11855 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11856 (pattern & ~CTL_LUN_PAT_MASK)) 11857 return (CTL_LUN_PAT_NONE); 11858 11859 /* 11860 * If the user asked for a range check, see if the requested LBA 11861 * range overlaps with this command's LBA range. 11862 */ 11863 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11864 uint64_t lba1; 11865 uint32_t len1; 11866 ctl_action action; 11867 int retval; 11868 11869 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11870 if (retval != 0) 11871 return (CTL_LUN_PAT_NONE); 11872 11873 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11874 desc->lba_range.len); 11875 /* 11876 * A "pass" means that the LBA ranges don't overlap, so 11877 * this doesn't match the user's range criteria. 11878 */ 11879 if (action == CTL_ACTION_PASS) 11880 return (CTL_LUN_PAT_NONE); 11881 } 11882 11883 return (filtered_pattern); 11884} 11885 11886static void 11887ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11888{ 11889 struct ctl_error_desc *desc, *desc2; 11890 11891 mtx_assert(&control_softc->ctl_lock, MA_OWNED); 11892 11893 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11894 ctl_lun_error_pattern pattern; 11895 /* 11896 * Check to see whether this particular command matches 11897 * the pattern in the descriptor. 11898 */ 11899 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11900 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11901 continue; 11902 11903 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11904 case CTL_LUN_INJ_ABORTED: 11905 ctl_set_aborted(&io->scsiio); 11906 break; 11907 case CTL_LUN_INJ_MEDIUM_ERR: 11908 ctl_set_medium_error(&io->scsiio); 11909 break; 11910 case CTL_LUN_INJ_UA: 11911 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11912 * OCCURRED */ 11913 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11914 break; 11915 case CTL_LUN_INJ_CUSTOM: 11916 /* 11917 * We're assuming the user knows what he is doing. 11918 * Just copy the sense information without doing 11919 * checks. 11920 */ 11921 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11922 ctl_min(sizeof(desc->custom_sense), 11923 sizeof(io->scsiio.sense_data))); 11924 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11925 io->scsiio.sense_len = SSD_FULL_SIZE; 11926 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11927 break; 11928 case CTL_LUN_INJ_NONE: 11929 default: 11930 /* 11931 * If this is an error injection type we don't know 11932 * about, clear the continuous flag (if it is set) 11933 * so it will get deleted below. 11934 */ 11935 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11936 break; 11937 } 11938 /* 11939 * By default, each error injection action is a one-shot 11940 */ 11941 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11942 continue; 11943 11944 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11945 11946 free(desc, M_CTL); 11947 } 11948} 11949 11950#ifdef CTL_IO_DELAY 11951static void 11952ctl_datamove_timer_wakeup(void *arg) 11953{ 11954 union ctl_io *io; 11955 11956 io = (union ctl_io *)arg; 11957 11958 ctl_datamove(io); 11959} 11960#endif /* CTL_IO_DELAY */ 11961 11962void 11963ctl_datamove(union ctl_io *io) 11964{ 11965 void (*fe_datamove)(union ctl_io *io); 11966 11967 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 11968 11969 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11970 11971#ifdef CTL_TIME_IO 11972 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11973 char str[256]; 11974 char path_str[64]; 11975 struct sbuf sb; 11976 11977 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11978 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11979 11980 sbuf_cat(&sb, path_str); 11981 switch (io->io_hdr.io_type) { 11982 case CTL_IO_SCSI: 11983 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11984 sbuf_printf(&sb, "\n"); 11985 sbuf_cat(&sb, path_str); 11986 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11987 io->scsiio.tag_num, io->scsiio.tag_type); 11988 break; 11989 case CTL_IO_TASK: 11990 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11991 "Tag Type: %d\n", io->taskio.task_action, 11992 io->taskio.tag_num, io->taskio.tag_type); 11993 break; 11994 default: 11995 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11996 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11997 break; 11998 } 11999 sbuf_cat(&sb, path_str); 12000 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 12001 (intmax_t)time_uptime - io->io_hdr.start_time); 12002 sbuf_finish(&sb); 12003 printf("%s", sbuf_data(&sb)); 12004 } 12005#endif /* CTL_TIME_IO */ 12006 12007 mtx_lock(&control_softc->ctl_lock); 12008#ifdef CTL_IO_DELAY 12009 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12010 struct ctl_lun *lun; 12011 12012 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12013 12014 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12015 } else { 12016 struct ctl_lun *lun; 12017 12018 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12019 if ((lun != NULL) 12020 && (lun->delay_info.datamove_delay > 0)) { 12021 struct callout *callout; 12022 12023 callout = (struct callout *)&io->io_hdr.timer_bytes; 12024 callout_init(callout, /*mpsafe*/ 1); 12025 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12026 callout_reset(callout, 12027 lun->delay_info.datamove_delay * hz, 12028 ctl_datamove_timer_wakeup, io); 12029 if (lun->delay_info.datamove_type == 12030 CTL_DELAY_TYPE_ONESHOT) 12031 lun->delay_info.datamove_delay = 0; 12032 mtx_unlock(&control_softc->ctl_lock); 12033 return; 12034 } 12035 } 12036#endif 12037 /* 12038 * If we have any pending task management commands, process them 12039 * first. This is necessary to eliminate a race condition with the 12040 * FETD: 12041 * 12042 * - FETD submits a task management command, like an abort. 12043 * - Back end calls fe_datamove() to move the data for the aborted 12044 * command. The FETD can't really accept it, but if it did, it 12045 * would end up transmitting data for a command that the initiator 12046 * told us to abort. 12047 * 12048 * We close the race by processing all pending task management 12049 * commands here (we can't block!), and then check this I/O to see 12050 * if it has been aborted. If so, return it to the back end with 12051 * bad status, so the back end can say return an error to the back end 12052 * and then when the back end returns an error, we can return the 12053 * aborted command to the FETD, so it can clean up its resources. 12054 */ 12055 if (control_softc->flags & CTL_FLAG_TASK_PENDING) 12056 ctl_run_task_queue(control_softc); 12057 12058 /* 12059 * This command has been aborted. Set the port status, so we fail 12060 * the data move. 12061 */ 12062 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12063 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 12064 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 12065 io->io_hdr.nexus.targ_port, 12066 (uintmax_t)io->io_hdr.nexus.targ_target.id, 12067 io->io_hdr.nexus.targ_lun); 12068 io->io_hdr.status = CTL_CMD_ABORTED; 12069 io->io_hdr.port_status = 31337; 12070 mtx_unlock(&control_softc->ctl_lock); 12071 /* 12072 * Note that the backend, in this case, will get the 12073 * callback in its context. In other cases it may get 12074 * called in the frontend's interrupt thread context. 12075 */ 12076 io->scsiio.be_move_done(io); 12077 return; 12078 } 12079 12080 /* 12081 * If we're in XFER mode and this I/O is from the other shelf 12082 * controller, we need to send the DMA to the other side to 12083 * actually transfer the data to/from the host. In serialize only 12084 * mode the transfer happens below CTL and ctl_datamove() is only 12085 * called on the machine that originally received the I/O. 12086 */ 12087 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 12088 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12089 union ctl_ha_msg msg; 12090 uint32_t sg_entries_sent; 12091 int do_sg_copy; 12092 int i; 12093 12094 memset(&msg, 0, sizeof(msg)); 12095 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 12096 msg.hdr.original_sc = io->io_hdr.original_sc; 12097 msg.hdr.serializing_sc = io; 12098 msg.hdr.nexus = io->io_hdr.nexus; 12099 msg.dt.flags = io->io_hdr.flags; 12100 /* 12101 * We convert everything into a S/G list here. We can't 12102 * pass by reference, only by value between controllers. 12103 * So we can't pass a pointer to the S/G list, only as many 12104 * S/G entries as we can fit in here. If it's possible for 12105 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 12106 * then we need to break this up into multiple transfers. 12107 */ 12108 if (io->scsiio.kern_sg_entries == 0) { 12109 msg.dt.kern_sg_entries = 1; 12110 /* 12111 * If this is in cached memory, flush the cache 12112 * before we send the DMA request to the other 12113 * controller. We want to do this in either the 12114 * read or the write case. The read case is 12115 * straightforward. In the write case, we want to 12116 * make sure nothing is in the local cache that 12117 * could overwrite the DMAed data. 12118 */ 12119 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12120 /* 12121 * XXX KDM use bus_dmamap_sync() here. 12122 */ 12123 } 12124 12125 /* 12126 * Convert to a physical address if this is a 12127 * virtual address. 12128 */ 12129 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 12130 msg.dt.sg_list[0].addr = 12131 io->scsiio.kern_data_ptr; 12132 } else { 12133 /* 12134 * XXX KDM use busdma here! 12135 */ 12136#if 0 12137 msg.dt.sg_list[0].addr = (void *) 12138 vtophys(io->scsiio.kern_data_ptr); 12139#endif 12140 } 12141 12142 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 12143 do_sg_copy = 0; 12144 } else { 12145 struct ctl_sg_entry *sgl; 12146 12147 do_sg_copy = 1; 12148 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 12149 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 12150 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12151 /* 12152 * XXX KDM use bus_dmamap_sync() here. 12153 */ 12154 } 12155 } 12156 12157 msg.dt.kern_data_len = io->scsiio.kern_data_len; 12158 msg.dt.kern_total_len = io->scsiio.kern_total_len; 12159 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 12160 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 12161 msg.dt.sg_sequence = 0; 12162 12163 /* 12164 * Loop until we've sent all of the S/G entries. On the 12165 * other end, we'll recompose these S/G entries into one 12166 * contiguous list before passing it to the 12167 */ 12168 for (sg_entries_sent = 0; sg_entries_sent < 12169 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 12170 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 12171 sizeof(msg.dt.sg_list[0])), 12172 msg.dt.kern_sg_entries - sg_entries_sent); 12173 12174 if (do_sg_copy != 0) { 12175 struct ctl_sg_entry *sgl; 12176 int j; 12177 12178 sgl = (struct ctl_sg_entry *) 12179 io->scsiio.kern_data_ptr; 12180 /* 12181 * If this is in cached memory, flush the cache 12182 * before we send the DMA request to the other 12183 * controller. We want to do this in either 12184 * the * read or the write case. The read 12185 * case is straightforward. In the write 12186 * case, we want to make sure nothing is 12187 * in the local cache that could overwrite 12188 * the DMAed data. 12189 */ 12190 12191 for (i = sg_entries_sent, j = 0; 12192 i < msg.dt.cur_sg_entries; i++, j++) { 12193 if ((io->io_hdr.flags & 12194 CTL_FLAG_NO_DATASYNC) == 0) { 12195 /* 12196 * XXX KDM use bus_dmamap_sync() 12197 */ 12198 } 12199 if ((io->io_hdr.flags & 12200 CTL_FLAG_BUS_ADDR) == 0) { 12201 /* 12202 * XXX KDM use busdma. 12203 */ 12204#if 0 12205 msg.dt.sg_list[j].addr =(void *) 12206 vtophys(sgl[i].addr); 12207#endif 12208 } else { 12209 msg.dt.sg_list[j].addr = 12210 sgl[i].addr; 12211 } 12212 msg.dt.sg_list[j].len = sgl[i].len; 12213 } 12214 } 12215 12216 sg_entries_sent += msg.dt.cur_sg_entries; 12217 if (sg_entries_sent >= msg.dt.kern_sg_entries) 12218 msg.dt.sg_last = 1; 12219 else 12220 msg.dt.sg_last = 0; 12221 12222 /* 12223 * XXX KDM drop and reacquire the lock here? 12224 */ 12225 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12226 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12227 /* 12228 * XXX do something here. 12229 */ 12230 } 12231 12232 msg.dt.sent_sg_entries = sg_entries_sent; 12233 } 12234 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12235 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 12236 ctl_failover_io(io, /*have_lock*/ 1); 12237 12238 } else { 12239 12240 /* 12241 * Lookup the fe_datamove() function for this particular 12242 * front end. 12243 */ 12244 fe_datamove = 12245 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12246 mtx_unlock(&control_softc->ctl_lock); 12247 12248 fe_datamove(io); 12249 } 12250} 12251 12252static void 12253ctl_send_datamove_done(union ctl_io *io, int have_lock) 12254{ 12255 union ctl_ha_msg msg; 12256 int isc_status; 12257 12258 memset(&msg, 0, sizeof(msg)); 12259 12260 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 12261 msg.hdr.original_sc = io; 12262 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 12263 msg.hdr.nexus = io->io_hdr.nexus; 12264 msg.hdr.status = io->io_hdr.status; 12265 msg.scsi.tag_num = io->scsiio.tag_num; 12266 msg.scsi.tag_type = io->scsiio.tag_type; 12267 msg.scsi.scsi_status = io->scsiio.scsi_status; 12268 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12269 sizeof(io->scsiio.sense_data)); 12270 msg.scsi.sense_len = io->scsiio.sense_len; 12271 msg.scsi.sense_residual = io->scsiio.sense_residual; 12272 msg.scsi.fetd_status = io->io_hdr.port_status; 12273 msg.scsi.residual = io->scsiio.residual; 12274 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12275 12276 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12277 ctl_failover_io(io, /*have_lock*/ have_lock); 12278 return; 12279 } 12280 12281 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 12282 if (isc_status > CTL_HA_STATUS_SUCCESS) { 12283 /* XXX do something if this fails */ 12284 } 12285 12286} 12287 12288/* 12289 * The DMA to the remote side is done, now we need to tell the other side 12290 * we're done so it can continue with its data movement. 12291 */ 12292static void 12293ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12294{ 12295 union ctl_io *io; 12296 12297 io = rq->context; 12298 12299 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12300 printf("%s: ISC DMA write failed with error %d", __func__, 12301 rq->ret); 12302 ctl_set_internal_failure(&io->scsiio, 12303 /*sks_valid*/ 1, 12304 /*retry_count*/ rq->ret); 12305 } 12306 12307 ctl_dt_req_free(rq); 12308 12309 /* 12310 * In this case, we had to malloc the memory locally. Free it. 12311 */ 12312 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12313 int i; 12314 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12315 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12316 } 12317 /* 12318 * The data is in local and remote memory, so now we need to send 12319 * status (good or back) back to the other side. 12320 */ 12321 ctl_send_datamove_done(io, /*have_lock*/ 0); 12322} 12323 12324/* 12325 * We've moved the data from the host/controller into local memory. Now we 12326 * need to push it over to the remote controller's memory. 12327 */ 12328static int 12329ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12330{ 12331 int retval; 12332 12333 retval = 0; 12334 12335 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12336 ctl_datamove_remote_write_cb); 12337 12338 return (retval); 12339} 12340 12341static void 12342ctl_datamove_remote_write(union ctl_io *io) 12343{ 12344 int retval; 12345 void (*fe_datamove)(union ctl_io *io); 12346 12347 /* 12348 * - Get the data from the host/HBA into local memory. 12349 * - DMA memory from the local controller to the remote controller. 12350 * - Send status back to the remote controller. 12351 */ 12352 12353 retval = ctl_datamove_remote_sgl_setup(io); 12354 if (retval != 0) 12355 return; 12356 12357 /* Switch the pointer over so the FETD knows what to do */ 12358 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12359 12360 /* 12361 * Use a custom move done callback, since we need to send completion 12362 * back to the other controller, not to the backend on this side. 12363 */ 12364 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12365 12366 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12367 12368 fe_datamove(io); 12369 12370 return; 12371 12372} 12373 12374static int 12375ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12376{ 12377#if 0 12378 char str[256]; 12379 char path_str[64]; 12380 struct sbuf sb; 12381#endif 12382 12383 /* 12384 * In this case, we had to malloc the memory locally. Free it. 12385 */ 12386 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12387 int i; 12388 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12389 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12390 } 12391 12392#if 0 12393 scsi_path_string(io, path_str, sizeof(path_str)); 12394 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12395 sbuf_cat(&sb, path_str); 12396 scsi_command_string(&io->scsiio, NULL, &sb); 12397 sbuf_printf(&sb, "\n"); 12398 sbuf_cat(&sb, path_str); 12399 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12400 io->scsiio.tag_num, io->scsiio.tag_type); 12401 sbuf_cat(&sb, path_str); 12402 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12403 io->io_hdr.flags, io->io_hdr.status); 12404 sbuf_finish(&sb); 12405 printk("%s", sbuf_data(&sb)); 12406#endif 12407 12408 12409 /* 12410 * The read is done, now we need to send status (good or bad) back 12411 * to the other side. 12412 */ 12413 ctl_send_datamove_done(io, /*have_lock*/ 0); 12414 12415 return (0); 12416} 12417 12418static void 12419ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12420{ 12421 union ctl_io *io; 12422 void (*fe_datamove)(union ctl_io *io); 12423 12424 io = rq->context; 12425 12426 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12427 printf("%s: ISC DMA read failed with error %d", __func__, 12428 rq->ret); 12429 ctl_set_internal_failure(&io->scsiio, 12430 /*sks_valid*/ 1, 12431 /*retry_count*/ rq->ret); 12432 } 12433 12434 ctl_dt_req_free(rq); 12435 12436 /* Switch the pointer over so the FETD knows what to do */ 12437 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12438 12439 /* 12440 * Use a custom move done callback, since we need to send completion 12441 * back to the other controller, not to the backend on this side. 12442 */ 12443 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12444 12445 /* XXX KDM add checks like the ones in ctl_datamove? */ 12446 12447 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12448 12449 fe_datamove(io); 12450} 12451 12452static int 12453ctl_datamove_remote_sgl_setup(union ctl_io *io) 12454{ 12455 struct ctl_sg_entry *local_sglist, *remote_sglist; 12456 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12457 struct ctl_softc *softc; 12458 int retval; 12459 int i; 12460 12461 retval = 0; 12462 softc = control_softc; 12463 12464 local_sglist = io->io_hdr.local_sglist; 12465 local_dma_sglist = io->io_hdr.local_dma_sglist; 12466 remote_sglist = io->io_hdr.remote_sglist; 12467 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12468 12469 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12470 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12471 local_sglist[i].len = remote_sglist[i].len; 12472 12473 /* 12474 * XXX Detect the situation where the RS-level I/O 12475 * redirector on the other side has already read the 12476 * data off of the AOR RS on this side, and 12477 * transferred it to remote (mirror) memory on the 12478 * other side. Since we already have the data in 12479 * memory here, we just need to use it. 12480 * 12481 * XXX KDM this can probably be removed once we 12482 * get the cache device code in and take the 12483 * current AOR implementation out. 12484 */ 12485#ifdef NEEDTOPORT 12486 if ((remote_sglist[i].addr >= 12487 (void *)vtophys(softc->mirr->addr)) 12488 && (remote_sglist[i].addr < 12489 ((void *)vtophys(softc->mirr->addr) + 12490 CacheMirrorOffset))) { 12491 local_sglist[i].addr = remote_sglist[i].addr - 12492 CacheMirrorOffset; 12493 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12494 CTL_FLAG_DATA_IN) 12495 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12496 } else { 12497 local_sglist[i].addr = remote_sglist[i].addr + 12498 CacheMirrorOffset; 12499 } 12500#endif 12501#if 0 12502 printf("%s: local %p, remote %p, len %d\n", 12503 __func__, local_sglist[i].addr, 12504 remote_sglist[i].addr, local_sglist[i].len); 12505#endif 12506 } 12507 } else { 12508 uint32_t len_to_go; 12509 12510 /* 12511 * In this case, we don't have automatically allocated 12512 * memory for this I/O on this controller. This typically 12513 * happens with internal CTL I/O -- e.g. inquiry, mode 12514 * sense, etc. Anything coming from RAIDCore will have 12515 * a mirror area available. 12516 */ 12517 len_to_go = io->scsiio.kern_data_len; 12518 12519 /* 12520 * Clear the no datasync flag, we have to use malloced 12521 * buffers. 12522 */ 12523 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12524 12525 /* 12526 * The difficult thing here is that the size of the various 12527 * S/G segments may be different than the size from the 12528 * remote controller. That'll make it harder when DMAing 12529 * the data back to the other side. 12530 */ 12531 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12532 sizeof(io->io_hdr.remote_sglist[0])) && 12533 (len_to_go > 0); i++) { 12534 local_sglist[i].len = ctl_min(len_to_go, 131072); 12535 CTL_SIZE_8B(local_dma_sglist[i].len, 12536 local_sglist[i].len); 12537 local_sglist[i].addr = 12538 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12539 12540 local_dma_sglist[i].addr = local_sglist[i].addr; 12541 12542 if (local_sglist[i].addr == NULL) { 12543 int j; 12544 12545 printf("malloc failed for %zd bytes!", 12546 local_dma_sglist[i].len); 12547 for (j = 0; j < i; j++) { 12548 free(local_sglist[j].addr, M_CTL); 12549 } 12550 ctl_set_internal_failure(&io->scsiio, 12551 /*sks_valid*/ 1, 12552 /*retry_count*/ 4857); 12553 retval = 1; 12554 goto bailout_error; 12555 12556 } 12557 /* XXX KDM do we need a sync here? */ 12558 12559 len_to_go -= local_sglist[i].len; 12560 } 12561 /* 12562 * Reset the number of S/G entries accordingly. The 12563 * original number of S/G entries is available in 12564 * rem_sg_entries. 12565 */ 12566 io->scsiio.kern_sg_entries = i; 12567 12568#if 0 12569 printf("%s: kern_sg_entries = %d\n", __func__, 12570 io->scsiio.kern_sg_entries); 12571 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12572 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12573 local_sglist[i].addr, local_sglist[i].len, 12574 local_dma_sglist[i].len); 12575#endif 12576 } 12577 12578 12579 return (retval); 12580 12581bailout_error: 12582 12583 ctl_send_datamove_done(io, /*have_lock*/ 0); 12584 12585 return (retval); 12586} 12587 12588static int 12589ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12590 ctl_ha_dt_cb callback) 12591{ 12592 struct ctl_ha_dt_req *rq; 12593 struct ctl_sg_entry *remote_sglist, *local_sglist; 12594 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12595 uint32_t local_used, remote_used, total_used; 12596 int retval; 12597 int i, j; 12598 12599 retval = 0; 12600 12601 rq = ctl_dt_req_alloc(); 12602 12603 /* 12604 * If we failed to allocate the request, and if the DMA didn't fail 12605 * anyway, set busy status. This is just a resource allocation 12606 * failure. 12607 */ 12608 if ((rq == NULL) 12609 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12610 ctl_set_busy(&io->scsiio); 12611 12612 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12613 12614 if (rq != NULL) 12615 ctl_dt_req_free(rq); 12616 12617 /* 12618 * The data move failed. We need to return status back 12619 * to the other controller. No point in trying to DMA 12620 * data to the remote controller. 12621 */ 12622 12623 ctl_send_datamove_done(io, /*have_lock*/ 0); 12624 12625 retval = 1; 12626 12627 goto bailout; 12628 } 12629 12630 local_sglist = io->io_hdr.local_sglist; 12631 local_dma_sglist = io->io_hdr.local_dma_sglist; 12632 remote_sglist = io->io_hdr.remote_sglist; 12633 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12634 local_used = 0; 12635 remote_used = 0; 12636 total_used = 0; 12637 12638 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12639 rq->ret = CTL_HA_STATUS_SUCCESS; 12640 rq->context = io; 12641 callback(rq); 12642 goto bailout; 12643 } 12644 12645 /* 12646 * Pull/push the data over the wire from/to the other controller. 12647 * This takes into account the possibility that the local and 12648 * remote sglists may not be identical in terms of the size of 12649 * the elements and the number of elements. 12650 * 12651 * One fundamental assumption here is that the length allocated for 12652 * both the local and remote sglists is identical. Otherwise, we've 12653 * essentially got a coding error of some sort. 12654 */ 12655 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12656 int isc_ret; 12657 uint32_t cur_len, dma_length; 12658 uint8_t *tmp_ptr; 12659 12660 rq->id = CTL_HA_DATA_CTL; 12661 rq->command = command; 12662 rq->context = io; 12663 12664 /* 12665 * Both pointers should be aligned. But it is possible 12666 * that the allocation length is not. They should both 12667 * also have enough slack left over at the end, though, 12668 * to round up to the next 8 byte boundary. 12669 */ 12670 cur_len = ctl_min(local_sglist[i].len - local_used, 12671 remote_sglist[j].len - remote_used); 12672 12673 /* 12674 * In this case, we have a size issue and need to decrease 12675 * the size, except in the case where we actually have less 12676 * than 8 bytes left. In that case, we need to increase 12677 * the DMA length to get the last bit. 12678 */ 12679 if ((cur_len & 0x7) != 0) { 12680 if (cur_len > 0x7) { 12681 cur_len = cur_len - (cur_len & 0x7); 12682 dma_length = cur_len; 12683 } else { 12684 CTL_SIZE_8B(dma_length, cur_len); 12685 } 12686 12687 } else 12688 dma_length = cur_len; 12689 12690 /* 12691 * If we had to allocate memory for this I/O, instead of using 12692 * the non-cached mirror memory, we'll need to flush the cache 12693 * before trying to DMA to the other controller. 12694 * 12695 * We could end up doing this multiple times for the same 12696 * segment if we have a larger local segment than remote 12697 * segment. That shouldn't be an issue. 12698 */ 12699 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12700 /* 12701 * XXX KDM use bus_dmamap_sync() here. 12702 */ 12703 } 12704 12705 rq->size = dma_length; 12706 12707 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12708 tmp_ptr += local_used; 12709 12710 /* Use physical addresses when talking to ISC hardware */ 12711 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12712 /* XXX KDM use busdma */ 12713#if 0 12714 rq->local = vtophys(tmp_ptr); 12715#endif 12716 } else 12717 rq->local = tmp_ptr; 12718 12719 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12720 tmp_ptr += remote_used; 12721 rq->remote = tmp_ptr; 12722 12723 rq->callback = NULL; 12724 12725 local_used += cur_len; 12726 if (local_used >= local_sglist[i].len) { 12727 i++; 12728 local_used = 0; 12729 } 12730 12731 remote_used += cur_len; 12732 if (remote_used >= remote_sglist[j].len) { 12733 j++; 12734 remote_used = 0; 12735 } 12736 total_used += cur_len; 12737 12738 if (total_used >= io->scsiio.kern_data_len) 12739 rq->callback = callback; 12740 12741 if ((rq->size & 0x7) != 0) { 12742 printf("%s: warning: size %d is not on 8b boundary\n", 12743 __func__, rq->size); 12744 } 12745 if (((uintptr_t)rq->local & 0x7) != 0) { 12746 printf("%s: warning: local %p not on 8b boundary\n", 12747 __func__, rq->local); 12748 } 12749 if (((uintptr_t)rq->remote & 0x7) != 0) { 12750 printf("%s: warning: remote %p not on 8b boundary\n", 12751 __func__, rq->local); 12752 } 12753#if 0 12754 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12755 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12756 rq->local, rq->remote, rq->size); 12757#endif 12758 12759 isc_ret = ctl_dt_single(rq); 12760 if (isc_ret == CTL_HA_STATUS_WAIT) 12761 continue; 12762 12763 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12764 rq->ret = CTL_HA_STATUS_SUCCESS; 12765 } else { 12766 rq->ret = isc_ret; 12767 } 12768 callback(rq); 12769 goto bailout; 12770 } 12771 12772bailout: 12773 return (retval); 12774 12775} 12776 12777static void 12778ctl_datamove_remote_read(union ctl_io *io) 12779{ 12780 int retval; 12781 int i; 12782 12783 /* 12784 * This will send an error to the other controller in the case of a 12785 * failure. 12786 */ 12787 retval = ctl_datamove_remote_sgl_setup(io); 12788 if (retval != 0) 12789 return; 12790 12791 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12792 ctl_datamove_remote_read_cb); 12793 if ((retval != 0) 12794 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12795 /* 12796 * Make sure we free memory if there was an error.. The 12797 * ctl_datamove_remote_xfer() function will send the 12798 * datamove done message, or call the callback with an 12799 * error if there is a problem. 12800 */ 12801 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12802 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12803 } 12804 12805 return; 12806} 12807 12808/* 12809 * Process a datamove request from the other controller. This is used for 12810 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12811 * first. Once that is complete, the data gets DMAed into the remote 12812 * controller's memory. For reads, we DMA from the remote controller's 12813 * memory into our memory first, and then move it out to the FETD. 12814 */ 12815static void 12816ctl_datamove_remote(union ctl_io *io) 12817{ 12818 struct ctl_softc *softc; 12819 12820 softc = control_softc; 12821 12822 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12823 12824 /* 12825 * Note that we look for an aborted I/O here, but don't do some of 12826 * the other checks that ctl_datamove() normally does. We don't 12827 * need to run the task queue, because this I/O is on the ISC 12828 * queue, which is executed by the work thread after the task queue. 12829 * We don't need to run the datamove delay code, since that should 12830 * have been done if need be on the other controller. 12831 */ 12832 mtx_lock(&softc->ctl_lock); 12833 12834 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12835 12836 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12837 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12838 io->io_hdr.nexus.targ_port, 12839 io->io_hdr.nexus.targ_target.id, 12840 io->io_hdr.nexus.targ_lun); 12841 io->io_hdr.status = CTL_CMD_ABORTED; 12842 io->io_hdr.port_status = 31338; 12843 12844 mtx_unlock(&softc->ctl_lock); 12845 12846 ctl_send_datamove_done(io, /*have_lock*/ 0); 12847 12848 return; 12849 } 12850 12851 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12852 mtx_unlock(&softc->ctl_lock); 12853 ctl_datamove_remote_write(io); 12854 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12855 mtx_unlock(&softc->ctl_lock); 12856 ctl_datamove_remote_read(io); 12857 } else { 12858 union ctl_ha_msg msg; 12859 struct scsi_sense_data *sense; 12860 uint8_t sks[3]; 12861 int retry_count; 12862 12863 memset(&msg, 0, sizeof(msg)); 12864 12865 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12866 msg.hdr.status = CTL_SCSI_ERROR; 12867 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12868 12869 retry_count = 4243; 12870 12871 sense = &msg.scsi.sense_data; 12872 sks[0] = SSD_SCS_VALID; 12873 sks[1] = (retry_count >> 8) & 0xff; 12874 sks[2] = retry_count & 0xff; 12875 12876 /* "Internal target failure" */ 12877 scsi_set_sense_data(sense, 12878 /*sense_format*/ SSD_TYPE_NONE, 12879 /*current_error*/ 1, 12880 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12881 /*asc*/ 0x44, 12882 /*ascq*/ 0x00, 12883 /*type*/ SSD_ELEM_SKS, 12884 /*size*/ sizeof(sks), 12885 /*data*/ sks, 12886 SSD_ELEM_NONE); 12887 12888 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12889 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12890 ctl_failover_io(io, /*have_lock*/ 1); 12891 mtx_unlock(&softc->ctl_lock); 12892 return; 12893 } 12894 12895 mtx_unlock(&softc->ctl_lock); 12896 12897 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12898 CTL_HA_STATUS_SUCCESS) { 12899 /* XXX KDM what to do if this fails? */ 12900 } 12901 return; 12902 } 12903 12904} 12905 12906static int 12907ctl_process_done(union ctl_io *io, int have_lock) 12908{ 12909 struct ctl_lun *lun; 12910 struct ctl_softc *ctl_softc; 12911 void (*fe_done)(union ctl_io *io); 12912 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12913 12914 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12915 12916 fe_done = 12917 control_softc->ctl_ports[targ_port]->fe_done; 12918 12919#ifdef CTL_TIME_IO 12920 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12921 char str[256]; 12922 char path_str[64]; 12923 struct sbuf sb; 12924 12925 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12926 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12927 12928 sbuf_cat(&sb, path_str); 12929 switch (io->io_hdr.io_type) { 12930 case CTL_IO_SCSI: 12931 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12932 sbuf_printf(&sb, "\n"); 12933 sbuf_cat(&sb, path_str); 12934 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12935 io->scsiio.tag_num, io->scsiio.tag_type); 12936 break; 12937 case CTL_IO_TASK: 12938 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12939 "Tag Type: %d\n", io->taskio.task_action, 12940 io->taskio.tag_num, io->taskio.tag_type); 12941 break; 12942 default: 12943 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12944 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12945 break; 12946 } 12947 sbuf_cat(&sb, path_str); 12948 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12949 (intmax_t)time_uptime - io->io_hdr.start_time); 12950 sbuf_finish(&sb); 12951 printf("%s", sbuf_data(&sb)); 12952 } 12953#endif /* CTL_TIME_IO */ 12954 12955 switch (io->io_hdr.io_type) { 12956 case CTL_IO_SCSI: 12957 break; 12958 case CTL_IO_TASK: 12959 if (bootverbose || verbose > 0) 12960 ctl_io_error_print(io, NULL); 12961 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12962 ctl_free_io(io); 12963 else 12964 fe_done(io); 12965 return (CTL_RETVAL_COMPLETE); 12966 break; 12967 default: 12968 printf("ctl_process_done: invalid io type %d\n", 12969 io->io_hdr.io_type); 12970 panic("ctl_process_done: invalid io type %d\n", 12971 io->io_hdr.io_type); 12972 break; /* NOTREACHED */ 12973 } 12974 12975 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12976 if (lun == NULL) { 12977 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12978 io->io_hdr.nexus.targ_lun)); 12979 fe_done(io); 12980 goto bailout; 12981 } 12982 ctl_softc = lun->ctl_softc; 12983 12984 /* 12985 * Remove this from the OOA queue. 12986 */ 12987 if (have_lock == 0) 12988 mtx_lock(&ctl_softc->ctl_lock); 12989 12990 /* 12991 * Check to see if we have any errors to inject here. We only 12992 * inject errors for commands that don't already have errors set. 12993 */ 12994 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12995 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12996 ctl_inject_error(lun, io); 12997 12998 /* 12999 * XXX KDM how do we treat commands that aren't completed 13000 * successfully? 13001 * 13002 * XXX KDM should we also track I/O latency? 13003 */ 13004 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 13005 uint32_t blocksize; 13006#ifdef CTL_TIME_IO 13007 struct bintime cur_bt; 13008#endif 13009 13010 if ((lun->be_lun != NULL) 13011 && (lun->be_lun->blocksize != 0)) 13012 blocksize = lun->be_lun->blocksize; 13013 else 13014 blocksize = 512; 13015 13016 switch (io->io_hdr.io_type) { 13017 case CTL_IO_SCSI: { 13018 int isread; 13019 struct ctl_lba_len_flags *lbalen; 13020 13021 isread = 0; 13022 switch (io->scsiio.cdb[0]) { 13023 case READ_6: 13024 case READ_10: 13025 case READ_12: 13026 case READ_16: 13027 isread = 1; 13028 /* FALLTHROUGH */ 13029 case WRITE_6: 13030 case WRITE_10: 13031 case WRITE_12: 13032 case WRITE_16: 13033 case WRITE_VERIFY_10: 13034 case WRITE_VERIFY_12: 13035 case WRITE_VERIFY_16: 13036 lbalen = (struct ctl_lba_len_flags *) 13037 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 13038 13039 if (isread) { 13040 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 13041 lbalen->len * blocksize; 13042 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 13043 13044#ifdef CTL_TIME_IO 13045 bintime_add( 13046 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 13047 &io->io_hdr.dma_bt); 13048 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 13049 io->io_hdr.num_dmas; 13050 getbintime(&cur_bt); 13051 bintime_sub(&cur_bt, 13052 &io->io_hdr.start_bt); 13053 13054 bintime_add( 13055 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 13056 &cur_bt); 13057 13058#if 0 13059 cs_prof_gettime(&cur_ticks); 13060 lun->stats.time[CTL_STATS_READ] += 13061 cur_ticks - 13062 io->io_hdr.start_ticks; 13063#endif 13064#if 0 13065 lun->stats.time[CTL_STATS_READ] += 13066 jiffies - io->io_hdr.start_time; 13067#endif 13068#endif /* CTL_TIME_IO */ 13069 } else { 13070 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 13071 lbalen->len * blocksize; 13072 lun->stats.ports[targ_port].operations[ 13073 CTL_STATS_WRITE]++; 13074 13075#ifdef CTL_TIME_IO 13076 bintime_add( 13077 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 13078 &io->io_hdr.dma_bt); 13079 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 13080 io->io_hdr.num_dmas; 13081 getbintime(&cur_bt); 13082 bintime_sub(&cur_bt, 13083 &io->io_hdr.start_bt); 13084 13085 bintime_add( 13086 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 13087 &cur_bt); 13088#if 0 13089 cs_prof_gettime(&cur_ticks); 13090 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 13091 cur_ticks - 13092 io->io_hdr.start_ticks; 13093 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 13094 jiffies - io->io_hdr.start_time; 13095#endif 13096#endif /* CTL_TIME_IO */ 13097 } 13098 break; 13099 default: 13100 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 13101 13102#ifdef CTL_TIME_IO 13103 bintime_add( 13104 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 13105 &io->io_hdr.dma_bt); 13106 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 13107 io->io_hdr.num_dmas; 13108 getbintime(&cur_bt); 13109 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 13110 13111 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 13112 &cur_bt); 13113 13114#if 0 13115 cs_prof_gettime(&cur_ticks); 13116 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 13117 cur_ticks - 13118 io->io_hdr.start_ticks; 13119 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 13120 jiffies - io->io_hdr.start_time; 13121#endif 13122#endif /* CTL_TIME_IO */ 13123 break; 13124 } 13125 break; 13126 } 13127 default: 13128 break; 13129 } 13130 } 13131 13132 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 13133 13134 /* 13135 * Run through the blocked queue on this LUN and see if anything 13136 * has become unblocked, now that this transaction is done. 13137 */ 13138 ctl_check_blocked(lun); 13139 13140 /* 13141 * If the LUN has been invalidated, free it if there is nothing 13142 * left on its OOA queue. 13143 */ 13144 if ((lun->flags & CTL_LUN_INVALID) 13145 && (TAILQ_FIRST(&lun->ooa_queue) == NULL)) 13146 ctl_free_lun(lun); 13147 13148 /* 13149 * If this command has been aborted, make sure we set the status 13150 * properly. The FETD is responsible for freeing the I/O and doing 13151 * whatever it needs to do to clean up its state. 13152 */ 13153 if (io->io_hdr.flags & CTL_FLAG_ABORT) 13154 io->io_hdr.status = CTL_CMD_ABORTED; 13155 13156 /* 13157 * We print out status for every task management command. For SCSI 13158 * commands, we filter out any unit attention errors; they happen 13159 * on every boot, and would clutter up the log. Note: task 13160 * management commands aren't printed here, they are printed above, 13161 * since they should never even make it down here. 13162 */ 13163 switch (io->io_hdr.io_type) { 13164 case CTL_IO_SCSI: { 13165 int error_code, sense_key, asc, ascq; 13166 13167 sense_key = 0; 13168 13169 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 13170 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 13171 /* 13172 * Since this is just for printing, no need to 13173 * show errors here. 13174 */ 13175 scsi_extract_sense_len(&io->scsiio.sense_data, 13176 io->scsiio.sense_len, 13177 &error_code, 13178 &sense_key, 13179 &asc, 13180 &ascq, 13181 /*show_errors*/ 0); 13182 } 13183 13184 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 13185 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 13186 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 13187 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 13188 13189 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 13190 ctl_softc->skipped_prints++; 13191 if (have_lock == 0) 13192 mtx_unlock(&ctl_softc->ctl_lock); 13193 } else { 13194 uint32_t skipped_prints; 13195 13196 skipped_prints = ctl_softc->skipped_prints; 13197 13198 ctl_softc->skipped_prints = 0; 13199 ctl_softc->last_print_jiffies = time_uptime; 13200 13201 if (have_lock == 0) 13202 mtx_unlock(&ctl_softc->ctl_lock); 13203 if (skipped_prints > 0) { 13204#ifdef NEEDTOPORT 13205 csevent_log(CSC_CTL | CSC_SHELF_SW | 13206 CTL_ERROR_REPORT, 13207 csevent_LogType_Trace, 13208 csevent_Severity_Information, 13209 csevent_AlertLevel_Green, 13210 csevent_FRU_Firmware, 13211 csevent_FRU_Unknown, 13212 "High CTL error volume, %d prints " 13213 "skipped", skipped_prints); 13214#endif 13215 } 13216 if (bootverbose || verbose > 0) 13217 ctl_io_error_print(io, NULL); 13218 } 13219 } else { 13220 if (have_lock == 0) 13221 mtx_unlock(&ctl_softc->ctl_lock); 13222 } 13223 break; 13224 } 13225 case CTL_IO_TASK: 13226 if (have_lock == 0) 13227 mtx_unlock(&ctl_softc->ctl_lock); 13228 if (bootverbose || verbose > 0) 13229 ctl_io_error_print(io, NULL); 13230 break; 13231 default: 13232 if (have_lock == 0) 13233 mtx_unlock(&ctl_softc->ctl_lock); 13234 break; 13235 } 13236 13237 /* 13238 * Tell the FETD or the other shelf controller we're done with this 13239 * command. Note that only SCSI commands get to this point. Task 13240 * management commands are completed above. 13241 * 13242 * We only send status to the other controller if we're in XFER 13243 * mode. In SER_ONLY mode, the I/O is done on the controller that 13244 * received the I/O (from CTL's perspective), and so the status is 13245 * generated there. 13246 * 13247 * XXX KDM if we hold the lock here, we could cause a deadlock 13248 * if the frontend comes back in in this context to queue 13249 * something. 13250 */ 13251 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 13252 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 13253 union ctl_ha_msg msg; 13254 13255 memset(&msg, 0, sizeof(msg)); 13256 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 13257 msg.hdr.original_sc = io->io_hdr.original_sc; 13258 msg.hdr.nexus = io->io_hdr.nexus; 13259 msg.hdr.status = io->io_hdr.status; 13260 msg.scsi.scsi_status = io->scsiio.scsi_status; 13261 msg.scsi.tag_num = io->scsiio.tag_num; 13262 msg.scsi.tag_type = io->scsiio.tag_type; 13263 msg.scsi.sense_len = io->scsiio.sense_len; 13264 msg.scsi.sense_residual = io->scsiio.sense_residual; 13265 msg.scsi.residual = io->scsiio.residual; 13266 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 13267 sizeof(io->scsiio.sense_data)); 13268 /* 13269 * We copy this whether or not this is an I/O-related 13270 * command. Otherwise, we'd have to go and check to see 13271 * whether it's a read/write command, and it really isn't 13272 * worth it. 13273 */ 13274 memcpy(&msg.scsi.lbalen, 13275 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 13276 sizeof(msg.scsi.lbalen)); 13277 13278 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 13279 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 13280 /* XXX do something here */ 13281 } 13282 13283 ctl_free_io(io); 13284 } else 13285 fe_done(io); 13286 13287bailout: 13288 13289 return (CTL_RETVAL_COMPLETE); 13290} 13291 13292/* 13293 * Front end should call this if it doesn't do autosense. When the request 13294 * sense comes back in from the initiator, we'll dequeue this and send it. 13295 */ 13296int 13297ctl_queue_sense(union ctl_io *io) 13298{ 13299 struct ctl_lun *lun; 13300 struct ctl_softc *ctl_softc; 13301 uint32_t initidx, targ_lun; 13302 13303 ctl_softc = control_softc; 13304 13305 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13306 13307 /* 13308 * LUN lookup will likely move to the ctl_work_thread() once we 13309 * have our new queueing infrastructure (that doesn't put things on 13310 * a per-LUN queue initially). That is so that we can handle 13311 * things like an INQUIRY to a LUN that we don't have enabled. We 13312 * can't deal with that right now. 13313 */ 13314 mtx_lock(&ctl_softc->ctl_lock); 13315 13316 /* 13317 * If we don't have a LUN for this, just toss the sense 13318 * information. 13319 */ 13320 targ_lun = io->io_hdr.nexus.targ_lun; 13321 if (io->io_hdr.nexus.lun_map_fn != NULL) 13322 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 13323 if ((targ_lun < CTL_MAX_LUNS) 13324 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13325 lun = ctl_softc->ctl_luns[targ_lun]; 13326 else 13327 goto bailout; 13328 13329 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13330 13331 /* 13332 * Already have CA set for this LUN...toss the sense information. 13333 */ 13334 if (ctl_is_set(lun->have_ca, initidx)) 13335 goto bailout; 13336 13337 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13338 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13339 sizeof(io->scsiio.sense_data))); 13340 ctl_set_mask(lun->have_ca, initidx); 13341 13342bailout: 13343 mtx_unlock(&ctl_softc->ctl_lock); 13344 13345 ctl_free_io(io); 13346 13347 return (CTL_RETVAL_COMPLETE); 13348} 13349 13350/* 13351 * Primary command inlet from frontend ports. All SCSI and task I/O 13352 * requests must go through this function. 13353 */ 13354int 13355ctl_queue(union ctl_io *io) 13356{ 13357 struct ctl_softc *ctl_softc; 13358 13359 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13360 13361 ctl_softc = control_softc; 13362 13363#ifdef CTL_TIME_IO 13364 io->io_hdr.start_time = time_uptime; 13365 getbintime(&io->io_hdr.start_bt); 13366#endif /* CTL_TIME_IO */ 13367 13368 mtx_lock(&ctl_softc->ctl_lock); 13369 13370 switch (io->io_hdr.io_type) { 13371 case CTL_IO_SCSI: 13372 STAILQ_INSERT_TAIL(&ctl_softc->incoming_queue, &io->io_hdr, 13373 links); 13374 break; 13375 case CTL_IO_TASK: 13376 STAILQ_INSERT_TAIL(&ctl_softc->task_queue, &io->io_hdr, links); 13377 /* 13378 * Set the task pending flag. This is necessary to close a 13379 * race condition with the FETD: 13380 * 13381 * - FETD submits a task management command, like an abort. 13382 * - Back end calls fe_datamove() to move the data for the 13383 * aborted command. The FETD can't really accept it, but 13384 * if it did, it would end up transmitting data for a 13385 * command that the initiator told us to abort. 13386 * 13387 * We close the race condition by setting the flag here, 13388 * and checking it in ctl_datamove(), before calling the 13389 * FETD's fe_datamove routine. If we've got a task 13390 * pending, we run the task queue and then check to see 13391 * whether our particular I/O has been aborted. 13392 */ 13393 ctl_softc->flags |= CTL_FLAG_TASK_PENDING; 13394 break; 13395 default: 13396 mtx_unlock(&ctl_softc->ctl_lock); 13397 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13398 return (-EINVAL); 13399 break; /* NOTREACHED */ 13400 } 13401 mtx_unlock(&ctl_softc->ctl_lock); 13402 13403 ctl_wakeup_thread(); 13404 13405 return (CTL_RETVAL_COMPLETE); 13406} 13407 13408#ifdef CTL_IO_DELAY 13409static void 13410ctl_done_timer_wakeup(void *arg) 13411{ 13412 union ctl_io *io; 13413 13414 io = (union ctl_io *)arg; 13415 ctl_done_lock(io, /*have_lock*/ 0); 13416} 13417#endif /* CTL_IO_DELAY */ 13418 13419void 13420ctl_done_lock(union ctl_io *io, int have_lock) 13421{ 13422 struct ctl_softc *ctl_softc; 13423#ifndef CTL_DONE_THREAD 13424 union ctl_io *xio; 13425#endif /* !CTL_DONE_THREAD */ 13426 13427 ctl_softc = control_softc; 13428 13429 if (have_lock == 0) 13430 mtx_lock(&ctl_softc->ctl_lock); 13431 13432 /* 13433 * Enable this to catch duplicate completion issues. 13434 */ 13435#if 0 13436 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13437 printf("%s: type %d msg %d cdb %x iptl: " 13438 "%d:%d:%d:%d tag 0x%04x " 13439 "flag %#x status %x\n", 13440 __func__, 13441 io->io_hdr.io_type, 13442 io->io_hdr.msg_type, 13443 io->scsiio.cdb[0], 13444 io->io_hdr.nexus.initid.id, 13445 io->io_hdr.nexus.targ_port, 13446 io->io_hdr.nexus.targ_target.id, 13447 io->io_hdr.nexus.targ_lun, 13448 (io->io_hdr.io_type == 13449 CTL_IO_TASK) ? 13450 io->taskio.tag_num : 13451 io->scsiio.tag_num, 13452 io->io_hdr.flags, 13453 io->io_hdr.status); 13454 } else 13455 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13456#endif 13457 13458 /* 13459 * This is an internal copy of an I/O, and should not go through 13460 * the normal done processing logic. 13461 */ 13462 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) { 13463 if (have_lock == 0) 13464 mtx_unlock(&ctl_softc->ctl_lock); 13465 return; 13466 } 13467 13468 /* 13469 * We need to send a msg to the serializing shelf to finish the IO 13470 * as well. We don't send a finish message to the other shelf if 13471 * this is a task management command. Task management commands 13472 * aren't serialized in the OOA queue, but rather just executed on 13473 * both shelf controllers for commands that originated on that 13474 * controller. 13475 */ 13476 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13477 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13478 union ctl_ha_msg msg_io; 13479 13480 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13481 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13482 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13483 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13484 } 13485 /* continue on to finish IO */ 13486 } 13487#ifdef CTL_IO_DELAY 13488 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13489 struct ctl_lun *lun; 13490 13491 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13492 13493 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13494 } else { 13495 struct ctl_lun *lun; 13496 13497 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13498 13499 if ((lun != NULL) 13500 && (lun->delay_info.done_delay > 0)) { 13501 struct callout *callout; 13502 13503 callout = (struct callout *)&io->io_hdr.timer_bytes; 13504 callout_init(callout, /*mpsafe*/ 1); 13505 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13506 callout_reset(callout, 13507 lun->delay_info.done_delay * hz, 13508 ctl_done_timer_wakeup, io); 13509 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13510 lun->delay_info.done_delay = 0; 13511 if (have_lock == 0) 13512 mtx_unlock(&ctl_softc->ctl_lock); 13513 return; 13514 } 13515 } 13516#endif /* CTL_IO_DELAY */ 13517 13518 STAILQ_INSERT_TAIL(&ctl_softc->done_queue, &io->io_hdr, links); 13519 13520#ifdef CTL_DONE_THREAD 13521 if (have_lock == 0) 13522 mtx_unlock(&ctl_softc->ctl_lock); 13523 13524 ctl_wakeup_thread(); 13525#else /* CTL_DONE_THREAD */ 13526 for (xio = (union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue); 13527 xio != NULL; 13528 xio =(union ctl_io *)STAILQ_FIRST(&ctl_softc->done_queue)) { 13529 13530 STAILQ_REMOVE_HEAD(&ctl_softc->done_queue, links); 13531 13532 ctl_process_done(xio, /*have_lock*/ 1); 13533 } 13534 if (have_lock == 0) 13535 mtx_unlock(&ctl_softc->ctl_lock); 13536#endif /* CTL_DONE_THREAD */ 13537} 13538 13539void 13540ctl_done(union ctl_io *io) 13541{ 13542 ctl_done_lock(io, /*have_lock*/ 0); 13543} 13544 13545int 13546ctl_isc(struct ctl_scsiio *ctsio) 13547{ 13548 struct ctl_lun *lun; 13549 int retval; 13550 13551 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13552 13553 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13554 13555 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13556 13557 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13558 13559 return (retval); 13560} 13561 13562 13563static void 13564ctl_work_thread(void *arg) 13565{ 13566 struct ctl_softc *softc; 13567 union ctl_io *io; 13568 struct ctl_be_lun *be_lun; 13569 int retval; 13570 13571 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13572 13573 softc = (struct ctl_softc *)arg; 13574 if (softc == NULL) 13575 return; 13576 13577 mtx_lock(&softc->ctl_lock); 13578 for (;;) { 13579 retval = 0; 13580 13581 /* 13582 * We handle the queues in this order: 13583 * - task management 13584 * - ISC 13585 * - done queue (to free up resources, unblock other commands) 13586 * - RtR queue 13587 * - incoming queue 13588 * 13589 * If those queues are empty, we break out of the loop and 13590 * go to sleep. 13591 */ 13592 io = (union ctl_io *)STAILQ_FIRST(&softc->task_queue); 13593 if (io != NULL) { 13594 ctl_run_task_queue(softc); 13595 continue; 13596 } 13597 io = (union ctl_io *)STAILQ_FIRST(&softc->isc_queue); 13598 if (io != NULL) { 13599 STAILQ_REMOVE_HEAD(&softc->isc_queue, links); 13600 ctl_handle_isc(io); 13601 continue; 13602 } 13603 io = (union ctl_io *)STAILQ_FIRST(&softc->done_queue); 13604 if (io != NULL) { 13605 STAILQ_REMOVE_HEAD(&softc->done_queue, links); 13606 /* clear any blocked commands, call fe_done */ 13607 mtx_unlock(&softc->ctl_lock); 13608 /* 13609 * XXX KDM 13610 * Call this without a lock for now. This will 13611 * depend on whether there is any way the FETD can 13612 * sleep or deadlock if called with the CTL lock 13613 * held. 13614 */ 13615 retval = ctl_process_done(io, /*have_lock*/ 0); 13616 mtx_lock(&softc->ctl_lock); 13617 continue; 13618 } 13619 if (!ctl_pause_rtr) { 13620 io = (union ctl_io *)STAILQ_FIRST(&softc->rtr_queue); 13621 if (io != NULL) { 13622 STAILQ_REMOVE_HEAD(&softc->rtr_queue, links); 13623 mtx_unlock(&softc->ctl_lock); 13624 retval = ctl_scsiio(&io->scsiio); 13625 if (retval != CTL_RETVAL_COMPLETE) 13626 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13627 mtx_lock(&softc->ctl_lock); 13628 continue; 13629 } 13630 } 13631 io = (union ctl_io *)STAILQ_FIRST(&softc->incoming_queue); 13632 if (io != NULL) { 13633 STAILQ_REMOVE_HEAD(&softc->incoming_queue, links); 13634 mtx_unlock(&softc->ctl_lock); 13635 ctl_scsiio_precheck(softc, &io->scsiio); 13636 mtx_lock(&softc->ctl_lock); 13637 continue; 13638 } 13639 /* 13640 * We might want to move this to a separate thread, so that 13641 * configuration requests (in this case LUN creations) 13642 * won't impact the I/O path. 13643 */ 13644 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13645 if (be_lun != NULL) { 13646 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13647 mtx_unlock(&softc->ctl_lock); 13648 ctl_create_lun(be_lun); 13649 mtx_lock(&softc->ctl_lock); 13650 continue; 13651 } 13652 13653 /* XXX KDM use the PDROP flag?? */ 13654 /* Sleep until we have something to do. */ 13655 mtx_sleep(softc, &softc->ctl_lock, PRIBIO, "-", 0); 13656 13657 /* Back to the top of the loop to see what woke us up. */ 13658 continue; 13659 } 13660} 13661 13662void 13663ctl_wakeup_thread() 13664{ 13665 struct ctl_softc *softc; 13666 13667 softc = control_softc; 13668 13669 wakeup_one(softc); 13670} 13671 13672/* Initialization and failover */ 13673 13674void 13675ctl_init_isc_msg(void) 13676{ 13677 printf("CTL: Still calling this thing\n"); 13678} 13679 13680/* 13681 * Init component 13682 * Initializes component into configuration defined by bootMode 13683 * (see hasc-sv.c) 13684 * returns hasc_Status: 13685 * OK 13686 * ERROR - fatal error 13687 */ 13688static ctl_ha_comp_status 13689ctl_isc_init(struct ctl_ha_component *c) 13690{ 13691 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13692 13693 c->status = ret; 13694 return ret; 13695} 13696 13697/* Start component 13698 * Starts component in state requested. If component starts successfully, 13699 * it must set its own state to the requestrd state 13700 * When requested state is HASC_STATE_HA, the component may refine it 13701 * by adding _SLAVE or _MASTER flags. 13702 * Currently allowed state transitions are: 13703 * UNKNOWN->HA - initial startup 13704 * UNKNOWN->SINGLE - initial startup when no parter detected 13705 * HA->SINGLE - failover 13706 * returns ctl_ha_comp_status: 13707 * OK - component successfully started in requested state 13708 * FAILED - could not start the requested state, failover may 13709 * be possible 13710 * ERROR - fatal error detected, no future startup possible 13711 */ 13712static ctl_ha_comp_status 13713ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13714{ 13715 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13716 13717 printf("%s: go\n", __func__); 13718 13719 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13720 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13721 ctl_is_single = 0; 13722 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13723 != CTL_HA_STATUS_SUCCESS) { 13724 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13725 ret = CTL_HA_COMP_STATUS_ERROR; 13726 } 13727 } else if (CTL_HA_STATE_IS_HA(c->state) 13728 && CTL_HA_STATE_IS_SINGLE(state)){ 13729 // HA->SINGLE transition 13730 ctl_failover(); 13731 ctl_is_single = 1; 13732 } else { 13733 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13734 c->state, state); 13735 ret = CTL_HA_COMP_STATUS_ERROR; 13736 } 13737 if (CTL_HA_STATE_IS_SINGLE(state)) 13738 ctl_is_single = 1; 13739 13740 c->state = state; 13741 c->status = ret; 13742 return ret; 13743} 13744 13745/* 13746 * Quiesce component 13747 * The component must clear any error conditions (set status to OK) and 13748 * prepare itself to another Start call 13749 * returns ctl_ha_comp_status: 13750 * OK 13751 * ERROR 13752 */ 13753static ctl_ha_comp_status 13754ctl_isc_quiesce(struct ctl_ha_component *c) 13755{ 13756 int ret = CTL_HA_COMP_STATUS_OK; 13757 13758 ctl_pause_rtr = 1; 13759 c->status = ret; 13760 return ret; 13761} 13762 13763struct ctl_ha_component ctl_ha_component_ctlisc = 13764{ 13765 .name = "CTL ISC", 13766 .state = CTL_HA_STATE_UNKNOWN, 13767 .init = ctl_isc_init, 13768 .start = ctl_isc_start, 13769 .quiesce = ctl_isc_quiesce 13770}; 13771 13772/* 13773 * vim: ts=8 13774 */ 13775