ctl.c revision 268293
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 268293 2014-07-05 19:30:20Z mav $"); 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/types.h> 51#include <sys/kthread.h> 52#include <sys/bio.h> 53#include <sys/fcntl.h> 54#include <sys/lock.h> 55#include <sys/module.h> 56#include <sys/mutex.h> 57#include <sys/condvar.h> 58#include <sys/malloc.h> 59#include <sys/conf.h> 60#include <sys/ioccom.h> 61#include <sys/queue.h> 62#include <sys/sbuf.h> 63#include <sys/smp.h> 64#include <sys/endian.h> 65#include <sys/sysctl.h> 66 67#include <cam/cam.h> 68#include <cam/scsi/scsi_all.h> 69#include <cam/scsi/scsi_da.h> 70#include <cam/ctl/ctl_io.h> 71#include <cam/ctl/ctl.h> 72#include <cam/ctl/ctl_frontend.h> 73#include <cam/ctl/ctl_frontend_internal.h> 74#include <cam/ctl/ctl_util.h> 75#include <cam/ctl/ctl_backend.h> 76#include <cam/ctl/ctl_ioctl.h> 77#include <cam/ctl/ctl_ha.h> 78#include <cam/ctl/ctl_private.h> 79#include <cam/ctl/ctl_debug.h> 80#include <cam/ctl/ctl_scsi_all.h> 81#include <cam/ctl/ctl_error.h> 82 83struct ctl_softc *control_softc = NULL; 84 85/* 86 * Size and alignment macros needed for Copan-specific HA hardware. These 87 * can go away when the HA code is re-written, and uses busdma for any 88 * hardware. 89 */ 90#define CTL_ALIGN_8B(target, source, type) \ 91 if (((uint32_t)source & 0x7) != 0) \ 92 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 93 else \ 94 target = (type)source; 95 96#define CTL_SIZE_8B(target, size) \ 97 if ((size & 0x7) != 0) \ 98 target = size + (0x8 - (size & 0x7)); \ 99 else \ 100 target = size; 101 102#define CTL_ALIGN_8B_MARGIN 16 103 104/* 105 * Template mode pages. 106 */ 107 108/* 109 * Note that these are default values only. The actual values will be 110 * filled in when the user does a mode sense. 111 */ 112static struct copan_power_subpage power_page_default = { 113 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 114 /*subpage*/ PWR_SUBPAGE_CODE, 115 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 116 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 117 /*page_version*/ PWR_VERSION, 118 /* total_luns */ 26, 119 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 120 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 121 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 122 0, 0, 0, 0, 0, 0} 123}; 124 125static struct copan_power_subpage power_page_changeable = { 126 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 127 /*subpage*/ PWR_SUBPAGE_CODE, 128 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 129 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 130 /*page_version*/ 0, 131 /* total_luns */ 0, 132 /* max_active_luns*/ 0, 133 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 134 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 135 0, 0, 0, 0, 0, 0} 136}; 137 138static struct copan_aps_subpage aps_page_default = { 139 APS_PAGE_CODE | SMPH_SPF, //page_code 140 APS_SUBPAGE_CODE, //subpage 141 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 142 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 143 APS_VERSION, //page_version 144 0, //lock_active 145 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 146 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 147 0, 0, 0, 0, 0} //reserved 148}; 149 150static struct copan_aps_subpage aps_page_changeable = { 151 APS_PAGE_CODE | SMPH_SPF, //page_code 152 APS_SUBPAGE_CODE, //subpage 153 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 154 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 155 0, //page_version 156 0, //lock_active 157 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 158 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 159 0, 0, 0, 0, 0} //reserved 160}; 161 162static struct copan_debugconf_subpage debugconf_page_default = { 163 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 164 DBGCNF_SUBPAGE_CODE, /* subpage */ 165 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 166 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 167 DBGCNF_VERSION, /* page_version */ 168 {CTL_TIME_IO_DEFAULT_SECS>>8, 169 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 170}; 171 172static struct copan_debugconf_subpage debugconf_page_changeable = { 173 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 174 DBGCNF_SUBPAGE_CODE, /* subpage */ 175 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 176 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 177 0, /* page_version */ 178 {0xff,0xff}, /* ctl_time_io_secs */ 179}; 180 181static struct scsi_format_page format_page_default = { 182 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 183 /*page_length*/sizeof(struct scsi_format_page) - 2, 184 /*tracks_per_zone*/ {0, 0}, 185 /*alt_sectors_per_zone*/ {0, 0}, 186 /*alt_tracks_per_zone*/ {0, 0}, 187 /*alt_tracks_per_lun*/ {0, 0}, 188 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 189 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 190 /*bytes_per_sector*/ {0, 0}, 191 /*interleave*/ {0, 0}, 192 /*track_skew*/ {0, 0}, 193 /*cylinder_skew*/ {0, 0}, 194 /*flags*/ SFP_HSEC, 195 /*reserved*/ {0, 0, 0} 196}; 197 198static struct scsi_format_page format_page_changeable = { 199 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 200 /*page_length*/sizeof(struct scsi_format_page) - 2, 201 /*tracks_per_zone*/ {0, 0}, 202 /*alt_sectors_per_zone*/ {0, 0}, 203 /*alt_tracks_per_zone*/ {0, 0}, 204 /*alt_tracks_per_lun*/ {0, 0}, 205 /*sectors_per_track*/ {0, 0}, 206 /*bytes_per_sector*/ {0, 0}, 207 /*interleave*/ {0, 0}, 208 /*track_skew*/ {0, 0}, 209 /*cylinder_skew*/ {0, 0}, 210 /*flags*/ 0, 211 /*reserved*/ {0, 0, 0} 212}; 213 214static struct scsi_rigid_disk_page rigid_disk_page_default = { 215 /*page_code*/SMS_RIGID_DISK_PAGE, 216 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 217 /*cylinders*/ {0, 0, 0}, 218 /*heads*/ CTL_DEFAULT_HEADS, 219 /*start_write_precomp*/ {0, 0, 0}, 220 /*start_reduced_current*/ {0, 0, 0}, 221 /*step_rate*/ {0, 0}, 222 /*landing_zone_cylinder*/ {0, 0, 0}, 223 /*rpl*/ SRDP_RPL_DISABLED, 224 /*rotational_offset*/ 0, 225 /*reserved1*/ 0, 226 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 227 CTL_DEFAULT_ROTATION_RATE & 0xff}, 228 /*reserved2*/ {0, 0} 229}; 230 231static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 232 /*page_code*/SMS_RIGID_DISK_PAGE, 233 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 234 /*cylinders*/ {0, 0, 0}, 235 /*heads*/ 0, 236 /*start_write_precomp*/ {0, 0, 0}, 237 /*start_reduced_current*/ {0, 0, 0}, 238 /*step_rate*/ {0, 0}, 239 /*landing_zone_cylinder*/ {0, 0, 0}, 240 /*rpl*/ 0, 241 /*rotational_offset*/ 0, 242 /*reserved1*/ 0, 243 /*rotation_rate*/ {0, 0}, 244 /*reserved2*/ {0, 0} 245}; 246 247static struct scsi_caching_page caching_page_default = { 248 /*page_code*/SMS_CACHING_PAGE, 249 /*page_length*/sizeof(struct scsi_caching_page) - 2, 250 /*flags1*/ SCP_DISC | SCP_WCE, 251 /*ret_priority*/ 0, 252 /*disable_pf_transfer_len*/ {0xff, 0xff}, 253 /*min_prefetch*/ {0, 0}, 254 /*max_prefetch*/ {0xff, 0xff}, 255 /*max_pf_ceiling*/ {0xff, 0xff}, 256 /*flags2*/ 0, 257 /*cache_segments*/ 0, 258 /*cache_seg_size*/ {0, 0}, 259 /*reserved*/ 0, 260 /*non_cache_seg_size*/ {0, 0, 0} 261}; 262 263static struct scsi_caching_page caching_page_changeable = { 264 /*page_code*/SMS_CACHING_PAGE, 265 /*page_length*/sizeof(struct scsi_caching_page) - 2, 266 /*flags1*/ 0, 267 /*ret_priority*/ 0, 268 /*disable_pf_transfer_len*/ {0, 0}, 269 /*min_prefetch*/ {0, 0}, 270 /*max_prefetch*/ {0, 0}, 271 /*max_pf_ceiling*/ {0, 0}, 272 /*flags2*/ 0, 273 /*cache_segments*/ 0, 274 /*cache_seg_size*/ {0, 0}, 275 /*reserved*/ 0, 276 /*non_cache_seg_size*/ {0, 0, 0} 277}; 278 279static struct scsi_control_page control_page_default = { 280 /*page_code*/SMS_CONTROL_MODE_PAGE, 281 /*page_length*/sizeof(struct scsi_control_page) - 2, 282 /*rlec*/0, 283 /*queue_flags*/0, 284 /*eca_and_aen*/0, 285 /*reserved*/0, 286 /*aen_holdoff_period*/{0, 0} 287}; 288 289static struct scsi_control_page control_page_changeable = { 290 /*page_code*/SMS_CONTROL_MODE_PAGE, 291 /*page_length*/sizeof(struct scsi_control_page) - 2, 292 /*rlec*/SCP_DSENSE, 293 /*queue_flags*/0, 294 /*eca_and_aen*/0, 295 /*reserved*/0, 296 /*aen_holdoff_period*/{0, 0} 297}; 298 299 300/* 301 * XXX KDM move these into the softc. 302 */ 303static int rcv_sync_msg; 304static int persis_offset; 305static uint8_t ctl_pause_rtr; 306static int ctl_is_single = 1; 307static int index_to_aps_page; 308 309SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 310static int worker_threads = -1; 311SYSCTL_INT(_kern_cam_ctl, OID_AUTO, worker_threads, CTLFLAG_RDTUN, 312 &worker_threads, 1, "Number of worker threads"); 313static int verbose = 0; 314SYSCTL_INT(_kern_cam_ctl, OID_AUTO, verbose, CTLFLAG_RWTUN, 315 &verbose, 0, "Show SCSI errors returned to initiator"); 316 317/* 318 * Serial number (0x80), device id (0x83), supported pages (0x00), 319 * Block limits (0xB0) and Logical Block Provisioning (0xB2) 320 */ 321#define SCSI_EVPD_NUM_SUPPORTED_PAGES 5 322 323static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 324 int param); 325static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 326static int ctl_init(void); 327void ctl_shutdown(void); 328static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 329static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 330static void ctl_ioctl_online(void *arg); 331static void ctl_ioctl_offline(void *arg); 332static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 333static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 334static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 335static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio); 336static int ctl_ioctl_submit_wait(union ctl_io *io); 337static void ctl_ioctl_datamove(union ctl_io *io); 338static void ctl_ioctl_done(union ctl_io *io); 339static void ctl_ioctl_hard_startstop_callback(void *arg, 340 struct cfi_metatask *metatask); 341static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 342static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 343 struct ctl_ooa *ooa_hdr, 344 struct ctl_ooa_entry *kern_entries); 345static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 346 struct thread *td); 347uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 348uint32_t ctl_port_idx(int port_num); 349#ifdef unused 350static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 351 uint32_t targ_target, uint32_t targ_lun, 352 int can_wait); 353static void ctl_kfree_io(union ctl_io *io); 354#endif /* unused */ 355static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 356 struct ctl_be_lun *be_lun, struct ctl_id target_id); 357static int ctl_free_lun(struct ctl_lun *lun); 358static void ctl_create_lun(struct ctl_be_lun *be_lun); 359/** 360static void ctl_failover_change_pages(struct ctl_softc *softc, 361 struct ctl_scsiio *ctsio, int master); 362**/ 363 364static int ctl_do_mode_select(union ctl_io *io); 365static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 366 uint64_t res_key, uint64_t sa_res_key, 367 uint8_t type, uint32_t residx, 368 struct ctl_scsiio *ctsio, 369 struct scsi_per_res_out *cdb, 370 struct scsi_per_res_out_parms* param); 371static void ctl_pro_preempt_other(struct ctl_lun *lun, 372 union ctl_ha_msg *msg); 373static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 374static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 375static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 376static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 377static int ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, 378 int alloc_len); 379static int ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len); 380static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 381static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 382static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 383static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 384static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 385 union ctl_io *ooa_io); 386static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 387 union ctl_io *starting_io); 388static int ctl_check_blocked(struct ctl_lun *lun); 389static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 390 struct ctl_lun *lun, 391 const struct ctl_cmd_entry *entry, 392 struct ctl_scsiio *ctsio); 393//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 394static void ctl_failover(void); 395static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 396 struct ctl_scsiio *ctsio); 397static int ctl_scsiio(struct ctl_scsiio *ctsio); 398 399static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 400static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 401 ctl_ua_type ua_type); 402static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 403 ctl_ua_type ua_type); 404static int ctl_abort_task(union ctl_io *io); 405static void ctl_run_task(union ctl_io *io); 406#ifdef CTL_IO_DELAY 407static void ctl_datamove_timer_wakeup(void *arg); 408static void ctl_done_timer_wakeup(void *arg); 409#endif /* CTL_IO_DELAY */ 410 411static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 412static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 413static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 414static void ctl_datamove_remote_write(union ctl_io *io); 415static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 416static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 417static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 418static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 419 ctl_ha_dt_cb callback); 420static void ctl_datamove_remote_read(union ctl_io *io); 421static void ctl_datamove_remote(union ctl_io *io); 422static int ctl_process_done(union ctl_io *io); 423static void ctl_lun_thread(void *arg); 424static void ctl_work_thread(void *arg); 425static void ctl_enqueue_incoming(union ctl_io *io); 426static void ctl_enqueue_rtr(union ctl_io *io); 427static void ctl_enqueue_done(union ctl_io *io); 428static void ctl_enqueue_isc(union ctl_io *io); 429static const struct ctl_cmd_entry * 430 ctl_get_cmd_entry(struct ctl_scsiio *ctsio); 431static const struct ctl_cmd_entry * 432 ctl_validate_command(struct ctl_scsiio *ctsio); 433static int ctl_cmd_applicable(uint8_t lun_type, 434 const struct ctl_cmd_entry *entry); 435 436/* 437 * Load the serialization table. This isn't very pretty, but is probably 438 * the easiest way to do it. 439 */ 440#include "ctl_ser_table.c" 441 442/* 443 * We only need to define open, close and ioctl routines for this driver. 444 */ 445static struct cdevsw ctl_cdevsw = { 446 .d_version = D_VERSION, 447 .d_flags = 0, 448 .d_open = ctl_open, 449 .d_close = ctl_close, 450 .d_ioctl = ctl_ioctl, 451 .d_name = "ctl", 452}; 453 454 455MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 456MALLOC_DEFINE(M_CTLIO, "ctlio", "Memory used for CTL requests"); 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 struct ctl_frontend ioctl_frontend = 470{ 471 .name = "ioctl", 472}; 473 474static void 475ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 476 union ctl_ha_msg *msg_info) 477{ 478 struct ctl_scsiio *ctsio; 479 480 if (msg_info->hdr.original_sc == NULL) { 481 printf("%s: original_sc == NULL!\n", __func__); 482 /* XXX KDM now what? */ 483 return; 484 } 485 486 ctsio = &msg_info->hdr.original_sc->scsiio; 487 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 488 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 489 ctsio->io_hdr.status = msg_info->hdr.status; 490 ctsio->scsi_status = msg_info->scsi.scsi_status; 491 ctsio->sense_len = msg_info->scsi.sense_len; 492 ctsio->sense_residual = msg_info->scsi.sense_residual; 493 ctsio->residual = msg_info->scsi.residual; 494 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 495 sizeof(ctsio->sense_data)); 496 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 497 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 498 ctl_enqueue_isc((union ctl_io *)ctsio); 499} 500 501static void 502ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 503 union ctl_ha_msg *msg_info) 504{ 505 struct ctl_scsiio *ctsio; 506 507 if (msg_info->hdr.serializing_sc == NULL) { 508 printf("%s: serializing_sc == NULL!\n", __func__); 509 /* XXX KDM now what? */ 510 return; 511 } 512 513 ctsio = &msg_info->hdr.serializing_sc->scsiio; 514#if 0 515 /* 516 * Attempt to catch the situation where an I/O has 517 * been freed, and we're using it again. 518 */ 519 if (ctsio->io_hdr.io_type == 0xff) { 520 union ctl_io *tmp_io; 521 tmp_io = (union ctl_io *)ctsio; 522 printf("%s: %p use after free!\n", __func__, 523 ctsio); 524 printf("%s: type %d msg %d cdb %x iptl: " 525 "%d:%d:%d:%d tag 0x%04x " 526 "flag %#x status %x\n", 527 __func__, 528 tmp_io->io_hdr.io_type, 529 tmp_io->io_hdr.msg_type, 530 tmp_io->scsiio.cdb[0], 531 tmp_io->io_hdr.nexus.initid.id, 532 tmp_io->io_hdr.nexus.targ_port, 533 tmp_io->io_hdr.nexus.targ_target.id, 534 tmp_io->io_hdr.nexus.targ_lun, 535 (tmp_io->io_hdr.io_type == 536 CTL_IO_TASK) ? 537 tmp_io->taskio.tag_num : 538 tmp_io->scsiio.tag_num, 539 tmp_io->io_hdr.flags, 540 tmp_io->io_hdr.status); 541 } 542#endif 543 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 544 ctl_enqueue_isc((union ctl_io *)ctsio); 545} 546 547/* 548 * ISC (Inter Shelf Communication) event handler. Events from the HA 549 * subsystem come in here. 550 */ 551static void 552ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 553{ 554 struct ctl_softc *ctl_softc; 555 union ctl_io *io; 556 struct ctl_prio *presio; 557 ctl_ha_status isc_status; 558 559 ctl_softc = control_softc; 560 io = NULL; 561 562 563#if 0 564 printf("CTL: Isc Msg event %d\n", event); 565#endif 566 if (event == CTL_HA_EVT_MSG_RECV) { 567 union ctl_ha_msg msg_info; 568 569 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 570 sizeof(msg_info), /*wait*/ 0); 571#if 0 572 printf("CTL: msg_type %d\n", msg_info.msg_type); 573#endif 574 if (isc_status != 0) { 575 printf("Error receiving message, status = %d\n", 576 isc_status); 577 return; 578 } 579 580 switch (msg_info.hdr.msg_type) { 581 case CTL_MSG_SERIALIZE: 582#if 0 583 printf("Serialize\n"); 584#endif 585 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 586 if (io == NULL) { 587 printf("ctl_isc_event_handler: can't allocate " 588 "ctl_io!\n"); 589 /* Bad Juju */ 590 /* Need to set busy and send msg back */ 591 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 592 msg_info.hdr.status = CTL_SCSI_ERROR; 593 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 594 msg_info.scsi.sense_len = 0; 595 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 596 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 597 } 598 goto bailout; 599 } 600 ctl_zero_io(io); 601 // populate ctsio from msg_info 602 io->io_hdr.io_type = CTL_IO_SCSI; 603 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 604 io->io_hdr.original_sc = msg_info.hdr.original_sc; 605#if 0 606 printf("pOrig %x\n", (int)msg_info.original_sc); 607#endif 608 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 609 CTL_FLAG_IO_ACTIVE; 610 /* 611 * If we're in serialization-only mode, we don't 612 * want to go through full done processing. Thus 613 * the COPY flag. 614 * 615 * XXX KDM add another flag that is more specific. 616 */ 617 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 618 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 619 io->io_hdr.nexus = msg_info.hdr.nexus; 620#if 0 621 printf("targ %d, port %d, iid %d, lun %d\n", 622 io->io_hdr.nexus.targ_target.id, 623 io->io_hdr.nexus.targ_port, 624 io->io_hdr.nexus.initid.id, 625 io->io_hdr.nexus.targ_lun); 626#endif 627 io->scsiio.tag_num = msg_info.scsi.tag_num; 628 io->scsiio.tag_type = msg_info.scsi.tag_type; 629 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 630 CTL_MAX_CDBLEN); 631 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 632 const struct ctl_cmd_entry *entry; 633 634 entry = ctl_get_cmd_entry(&io->scsiio); 635 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 636 io->io_hdr.flags |= 637 entry->flags & CTL_FLAG_DATA_MASK; 638 } 639 ctl_enqueue_isc(io); 640 break; 641 642 /* Performed on the Originating SC, XFER mode only */ 643 case CTL_MSG_DATAMOVE: { 644 struct ctl_sg_entry *sgl; 645 int i, j; 646 647 io = msg_info.hdr.original_sc; 648 if (io == NULL) { 649 printf("%s: original_sc == NULL!\n", __func__); 650 /* XXX KDM do something here */ 651 break; 652 } 653 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 654 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 655 /* 656 * Keep track of this, we need to send it back over 657 * when the datamove is complete. 658 */ 659 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 660 661 if (msg_info.dt.sg_sequence == 0) { 662 /* 663 * XXX KDM we use the preallocated S/G list 664 * here, but we'll need to change this to 665 * dynamic allocation if we need larger S/G 666 * lists. 667 */ 668 if (msg_info.dt.kern_sg_entries > 669 sizeof(io->io_hdr.remote_sglist) / 670 sizeof(io->io_hdr.remote_sglist[0])) { 671 printf("%s: number of S/G entries " 672 "needed %u > allocated num %zd\n", 673 __func__, 674 msg_info.dt.kern_sg_entries, 675 sizeof(io->io_hdr.remote_sglist)/ 676 sizeof(io->io_hdr.remote_sglist[0])); 677 678 /* 679 * XXX KDM send a message back to 680 * the other side to shut down the 681 * DMA. The error will come back 682 * through via the normal channel. 683 */ 684 break; 685 } 686 sgl = io->io_hdr.remote_sglist; 687 memset(sgl, 0, 688 sizeof(io->io_hdr.remote_sglist)); 689 690 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 691 692 io->scsiio.kern_sg_entries = 693 msg_info.dt.kern_sg_entries; 694 io->scsiio.rem_sg_entries = 695 msg_info.dt.kern_sg_entries; 696 io->scsiio.kern_data_len = 697 msg_info.dt.kern_data_len; 698 io->scsiio.kern_total_len = 699 msg_info.dt.kern_total_len; 700 io->scsiio.kern_data_resid = 701 msg_info.dt.kern_data_resid; 702 io->scsiio.kern_rel_offset = 703 msg_info.dt.kern_rel_offset; 704 /* 705 * Clear out per-DMA flags. 706 */ 707 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 708 /* 709 * Add per-DMA flags that are set for this 710 * particular DMA request. 711 */ 712 io->io_hdr.flags |= msg_info.dt.flags & 713 CTL_FLAG_RDMA_MASK; 714 } else 715 sgl = (struct ctl_sg_entry *) 716 io->scsiio.kern_data_ptr; 717 718 for (i = msg_info.dt.sent_sg_entries, j = 0; 719 i < (msg_info.dt.sent_sg_entries + 720 msg_info.dt.cur_sg_entries); i++, j++) { 721 sgl[i].addr = msg_info.dt.sg_list[j].addr; 722 sgl[i].len = msg_info.dt.sg_list[j].len; 723 724#if 0 725 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 726 __func__, 727 msg_info.dt.sg_list[j].addr, 728 msg_info.dt.sg_list[j].len, 729 sgl[i].addr, sgl[i].len, j, i); 730#endif 731 } 732#if 0 733 memcpy(&sgl[msg_info.dt.sent_sg_entries], 734 msg_info.dt.sg_list, 735 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 736#endif 737 738 /* 739 * If this is the last piece of the I/O, we've got 740 * the full S/G list. Queue processing in the thread. 741 * Otherwise wait for the next piece. 742 */ 743 if (msg_info.dt.sg_last != 0) 744 ctl_enqueue_isc(io); 745 break; 746 } 747 /* Performed on the Serializing (primary) SC, XFER mode only */ 748 case CTL_MSG_DATAMOVE_DONE: { 749 if (msg_info.hdr.serializing_sc == NULL) { 750 printf("%s: serializing_sc == NULL!\n", 751 __func__); 752 /* XXX KDM now what? */ 753 break; 754 } 755 /* 756 * We grab the sense information here in case 757 * there was a failure, so we can return status 758 * back to the initiator. 759 */ 760 io = msg_info.hdr.serializing_sc; 761 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 762 io->io_hdr.status = msg_info.hdr.status; 763 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 764 io->scsiio.sense_len = msg_info.scsi.sense_len; 765 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 766 io->io_hdr.port_status = msg_info.scsi.fetd_status; 767 io->scsiio.residual = msg_info.scsi.residual; 768 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 769 sizeof(io->scsiio.sense_data)); 770 ctl_enqueue_isc(io); 771 break; 772 } 773 774 /* Preformed on Originating SC, SER_ONLY mode */ 775 case CTL_MSG_R2R: 776 io = msg_info.hdr.original_sc; 777 if (io == NULL) { 778 printf("%s: Major Bummer\n", __func__); 779 return; 780 } else { 781#if 0 782 printf("pOrig %x\n",(int) ctsio); 783#endif 784 } 785 io->io_hdr.msg_type = CTL_MSG_R2R; 786 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 787 ctl_enqueue_isc(io); 788 break; 789 790 /* 791 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 792 * mode. 793 * Performed on the Originating (i.e. secondary) SC in XFER 794 * mode 795 */ 796 case CTL_MSG_FINISH_IO: 797 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 798 ctl_isc_handler_finish_xfer(ctl_softc, 799 &msg_info); 800 else 801 ctl_isc_handler_finish_ser_only(ctl_softc, 802 &msg_info); 803 break; 804 805 /* Preformed on Originating SC */ 806 case CTL_MSG_BAD_JUJU: 807 io = msg_info.hdr.original_sc; 808 if (io == NULL) { 809 printf("%s: Bad JUJU!, original_sc is NULL!\n", 810 __func__); 811 break; 812 } 813 ctl_copy_sense_data(&msg_info, io); 814 /* 815 * IO should have already been cleaned up on other 816 * SC so clear this flag so we won't send a message 817 * back to finish the IO there. 818 */ 819 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 820 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 821 822 /* io = msg_info.hdr.serializing_sc; */ 823 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 824 ctl_enqueue_isc(io); 825 break; 826 827 /* Handle resets sent from the other side */ 828 case CTL_MSG_MANAGE_TASKS: { 829 struct ctl_taskio *taskio; 830 taskio = (struct ctl_taskio *)ctl_alloc_io( 831 (void *)ctl_softc->othersc_pool); 832 if (taskio == NULL) { 833 printf("ctl_isc_event_handler: can't allocate " 834 "ctl_io!\n"); 835 /* Bad Juju */ 836 /* should I just call the proper reset func 837 here??? */ 838 goto bailout; 839 } 840 ctl_zero_io((union ctl_io *)taskio); 841 taskio->io_hdr.io_type = CTL_IO_TASK; 842 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 843 taskio->io_hdr.nexus = msg_info.hdr.nexus; 844 taskio->task_action = msg_info.task.task_action; 845 taskio->tag_num = msg_info.task.tag_num; 846 taskio->tag_type = msg_info.task.tag_type; 847#ifdef CTL_TIME_IO 848 taskio->io_hdr.start_time = time_uptime; 849 getbintime(&taskio->io_hdr.start_bt); 850#if 0 851 cs_prof_gettime(&taskio->io_hdr.start_ticks); 852#endif 853#endif /* CTL_TIME_IO */ 854 ctl_run_task((union ctl_io *)taskio); 855 break; 856 } 857 /* Persistent Reserve action which needs attention */ 858 case CTL_MSG_PERS_ACTION: 859 presio = (struct ctl_prio *)ctl_alloc_io( 860 (void *)ctl_softc->othersc_pool); 861 if (presio == NULL) { 862 printf("ctl_isc_event_handler: can't allocate " 863 "ctl_io!\n"); 864 /* Bad Juju */ 865 /* Need to set busy and send msg back */ 866 goto bailout; 867 } 868 ctl_zero_io((union ctl_io *)presio); 869 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 870 presio->pr_msg = msg_info.pr; 871 ctl_enqueue_isc((union ctl_io *)presio); 872 break; 873 case CTL_MSG_SYNC_FE: 874 rcv_sync_msg = 1; 875 break; 876 case CTL_MSG_APS_LOCK: { 877 // It's quicker to execute this then to 878 // queue it. 879 struct ctl_lun *lun; 880 struct ctl_page_index *page_index; 881 struct copan_aps_subpage *current_sp; 882 uint32_t targ_lun; 883 884 targ_lun = msg_info.hdr.nexus.targ_mapped_lun; 885 lun = ctl_softc->ctl_luns[targ_lun]; 886 mtx_lock(&lun->lun_lock); 887 page_index = &lun->mode_pages.index[index_to_aps_page]; 888 current_sp = (struct copan_aps_subpage *) 889 (page_index->page_data + 890 (page_index->page_len * CTL_PAGE_CURRENT)); 891 892 current_sp->lock_active = msg_info.aps.lock_flag; 893 mtx_unlock(&lun->lun_lock); 894 break; 895 } 896 default: 897 printf("How did I get here?\n"); 898 } 899 } else if (event == CTL_HA_EVT_MSG_SENT) { 900 if (param != CTL_HA_STATUS_SUCCESS) { 901 printf("Bad status from ctl_ha_msg_send status %d\n", 902 param); 903 } 904 return; 905 } else if (event == CTL_HA_EVT_DISCONNECT) { 906 printf("CTL: Got a disconnect from Isc\n"); 907 return; 908 } else { 909 printf("ctl_isc_event_handler: Unknown event %d\n", event); 910 return; 911 } 912 913bailout: 914 return; 915} 916 917static void 918ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 919{ 920 struct scsi_sense_data *sense; 921 922 sense = &dest->scsiio.sense_data; 923 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 924 dest->scsiio.scsi_status = src->scsi.scsi_status; 925 dest->scsiio.sense_len = src->scsi.sense_len; 926 dest->io_hdr.status = src->hdr.status; 927} 928 929static int 930ctl_init(void) 931{ 932 struct ctl_softc *softc; 933 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 934 struct ctl_port *port; 935 uint8_t sc_id =0; 936 int i, error, retval; 937 //int isc_retval; 938 939 retval = 0; 940 ctl_pause_rtr = 0; 941 rcv_sync_msg = 0; 942 943 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 944 M_WAITOK | M_ZERO); 945 softc = control_softc; 946 947 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 948 "cam/ctl"); 949 950 softc->dev->si_drv1 = softc; 951 952 /* 953 * By default, return a "bad LUN" peripheral qualifier for unknown 954 * LUNs. The user can override this default using the tunable or 955 * sysctl. See the comment in ctl_inquiry_std() for more details. 956 */ 957 softc->inquiry_pq_no_lun = 1; 958 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 959 &softc->inquiry_pq_no_lun); 960 sysctl_ctx_init(&softc->sysctl_ctx); 961 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 962 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 963 CTLFLAG_RD, 0, "CAM Target Layer"); 964 965 if (softc->sysctl_tree == NULL) { 966 printf("%s: unable to allocate sysctl tree\n", __func__); 967 destroy_dev(softc->dev); 968 free(control_softc, M_DEVBUF); 969 control_softc = NULL; 970 return (ENOMEM); 971 } 972 973 SYSCTL_ADD_INT(&softc->sysctl_ctx, 974 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 975 "inquiry_pq_no_lun", CTLFLAG_RW, 976 &softc->inquiry_pq_no_lun, 0, 977 "Report no lun possible for invalid LUNs"); 978 979 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 980 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 981 softc->open_count = 0; 982 983 /* 984 * Default to actually sending a SYNCHRONIZE CACHE command down to 985 * the drive. 986 */ 987 softc->flags = CTL_FLAG_REAL_SYNC; 988 989 /* 990 * In Copan's HA scheme, the "master" and "slave" roles are 991 * figured out through the slot the controller is in. Although it 992 * is an active/active system, someone has to be in charge. 993 */ 994#ifdef NEEDTOPORT 995 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 996#endif 997 998 if (sc_id == 0) { 999 softc->flags |= CTL_FLAG_MASTER_SHELF; 1000 persis_offset = 0; 1001 } else 1002 persis_offset = CTL_MAX_INITIATORS; 1003 1004 /* 1005 * XXX KDM need to figure out where we want to get our target ID 1006 * and WWID. Is it different on each port? 1007 */ 1008 softc->target.id = 0; 1009 softc->target.wwid[0] = 0x12345678; 1010 softc->target.wwid[1] = 0x87654321; 1011 STAILQ_INIT(&softc->lun_list); 1012 STAILQ_INIT(&softc->pending_lun_queue); 1013 STAILQ_INIT(&softc->fe_list); 1014 STAILQ_INIT(&softc->port_list); 1015 STAILQ_INIT(&softc->be_list); 1016 STAILQ_INIT(&softc->io_pools); 1017 1018 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1019 &internal_pool)!= 0){ 1020 printf("ctl: can't allocate %d entry internal pool, " 1021 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1022 return (ENOMEM); 1023 } 1024 1025 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1026 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1027 printf("ctl: can't allocate %d entry emergency pool, " 1028 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1029 ctl_pool_free(internal_pool); 1030 return (ENOMEM); 1031 } 1032 1033 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1034 &other_pool) != 0) 1035 { 1036 printf("ctl: can't allocate %d entry other SC pool, " 1037 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1038 ctl_pool_free(internal_pool); 1039 ctl_pool_free(emergency_pool); 1040 return (ENOMEM); 1041 } 1042 1043 softc->internal_pool = internal_pool; 1044 softc->emergency_pool = emergency_pool; 1045 softc->othersc_pool = other_pool; 1046 1047 if (worker_threads <= 0) 1048 worker_threads = max(1, mp_ncpus / 4); 1049 if (worker_threads > CTL_MAX_THREADS) 1050 worker_threads = CTL_MAX_THREADS; 1051 1052 for (i = 0; i < worker_threads; i++) { 1053 struct ctl_thread *thr = &softc->threads[i]; 1054 1055 mtx_init(&thr->queue_lock, "CTL queue mutex", NULL, MTX_DEF); 1056 thr->ctl_softc = softc; 1057 STAILQ_INIT(&thr->incoming_queue); 1058 STAILQ_INIT(&thr->rtr_queue); 1059 STAILQ_INIT(&thr->done_queue); 1060 STAILQ_INIT(&thr->isc_queue); 1061 1062 error = kproc_kthread_add(ctl_work_thread, thr, 1063 &softc->ctl_proc, &thr->thread, 0, 0, "ctl", "work%d", i); 1064 if (error != 0) { 1065 printf("error creating CTL work thread!\n"); 1066 ctl_pool_free(internal_pool); 1067 ctl_pool_free(emergency_pool); 1068 ctl_pool_free(other_pool); 1069 return (error); 1070 } 1071 } 1072 error = kproc_kthread_add(ctl_lun_thread, softc, 1073 &softc->ctl_proc, NULL, 0, 0, "ctl", "lun"); 1074 if (error != 0) { 1075 printf("error creating CTL lun thread!\n"); 1076 ctl_pool_free(internal_pool); 1077 ctl_pool_free(emergency_pool); 1078 ctl_pool_free(other_pool); 1079 return (error); 1080 } 1081 if (bootverbose) 1082 printf("ctl: CAM Target Layer loaded\n"); 1083 1084 /* 1085 * Initialize the initiator and portname mappings 1086 */ 1087 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1088 1089 /* 1090 * Initialize the ioctl front end. 1091 */ 1092 ctl_frontend_register(&ioctl_frontend); 1093 port = &softc->ioctl_info.port; 1094 port->frontend = &ioctl_frontend; 1095 sprintf(softc->ioctl_info.port_name, "ioctl"); 1096 port->port_type = CTL_PORT_IOCTL; 1097 port->num_requested_ctl_io = 100; 1098 port->port_name = softc->ioctl_info.port_name; 1099 port->port_online = ctl_ioctl_online; 1100 port->port_offline = ctl_ioctl_offline; 1101 port->onoff_arg = &softc->ioctl_info; 1102 port->lun_enable = ctl_ioctl_lun_enable; 1103 port->lun_disable = ctl_ioctl_lun_disable; 1104 port->targ_lun_arg = &softc->ioctl_info; 1105 port->fe_datamove = ctl_ioctl_datamove; 1106 port->fe_done = ctl_ioctl_done; 1107 port->max_targets = 15; 1108 port->max_target_id = 15; 1109 1110 if (ctl_port_register(&softc->ioctl_info.port, 1111 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1112 printf("ctl: ioctl front end registration failed, will " 1113 "continue anyway\n"); 1114 } 1115 1116#ifdef CTL_IO_DELAY 1117 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1118 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1119 sizeof(struct callout), CTL_TIMER_BYTES); 1120 return (EINVAL); 1121 } 1122#endif /* CTL_IO_DELAY */ 1123 1124 return (0); 1125} 1126 1127void 1128ctl_shutdown(void) 1129{ 1130 struct ctl_softc *softc; 1131 struct ctl_lun *lun, *next_lun; 1132 struct ctl_io_pool *pool; 1133 1134 softc = (struct ctl_softc *)control_softc; 1135 1136 if (ctl_port_deregister(&softc->ioctl_info.port) != 0) 1137 printf("ctl: ioctl front end deregistration failed\n"); 1138 1139 mtx_lock(&softc->ctl_lock); 1140 1141 /* 1142 * Free up each LUN. 1143 */ 1144 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1145 next_lun = STAILQ_NEXT(lun, links); 1146 ctl_free_lun(lun); 1147 } 1148 1149 mtx_unlock(&softc->ctl_lock); 1150 1151 ctl_frontend_deregister(&ioctl_frontend); 1152 1153 /* 1154 * This will rip the rug out from under any FETDs or anyone else 1155 * that has a pool allocated. Since we increment our module 1156 * refcount any time someone outside the main CTL module allocates 1157 * a pool, we shouldn't have any problems here. The user won't be 1158 * able to unload the CTL module until client modules have 1159 * successfully unloaded. 1160 */ 1161 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1162 ctl_pool_free(pool); 1163 1164#if 0 1165 ctl_shutdown_thread(softc->work_thread); 1166 mtx_destroy(&softc->queue_lock); 1167#endif 1168 1169 mtx_destroy(&softc->pool_lock); 1170 mtx_destroy(&softc->ctl_lock); 1171 1172 destroy_dev(softc->dev); 1173 1174 sysctl_ctx_free(&softc->sysctl_ctx); 1175 1176 free(control_softc, M_DEVBUF); 1177 control_softc = NULL; 1178 1179 if (bootverbose) 1180 printf("ctl: CAM Target Layer unloaded\n"); 1181} 1182 1183static int 1184ctl_module_event_handler(module_t mod, int what, void *arg) 1185{ 1186 1187 switch (what) { 1188 case MOD_LOAD: 1189 return (ctl_init()); 1190 case MOD_UNLOAD: 1191 return (EBUSY); 1192 default: 1193 return (EOPNOTSUPP); 1194 } 1195} 1196 1197/* 1198 * XXX KDM should we do some access checks here? Bump a reference count to 1199 * prevent a CTL module from being unloaded while someone has it open? 1200 */ 1201static int 1202ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1203{ 1204 return (0); 1205} 1206 1207static int 1208ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1209{ 1210 return (0); 1211} 1212 1213int 1214ctl_port_enable(ctl_port_type port_type) 1215{ 1216 struct ctl_softc *softc; 1217 struct ctl_port *port; 1218 1219 if (ctl_is_single == 0) { 1220 union ctl_ha_msg msg_info; 1221 int isc_retval; 1222 1223#if 0 1224 printf("%s: HA mode, synchronizing frontend enable\n", 1225 __func__); 1226#endif 1227 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1228 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1229 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1230 printf("Sync msg send error retval %d\n", isc_retval); 1231 } 1232 if (!rcv_sync_msg) { 1233 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1234 sizeof(msg_info), 1); 1235 } 1236#if 0 1237 printf("CTL:Frontend Enable\n"); 1238 } else { 1239 printf("%s: single mode, skipping frontend synchronization\n", 1240 __func__); 1241#endif 1242 } 1243 1244 softc = control_softc; 1245 1246 STAILQ_FOREACH(port, &softc->port_list, links) { 1247 if (port_type & port->port_type) 1248 { 1249#if 0 1250 printf("port %d\n", port->targ_port); 1251#endif 1252 ctl_port_online(port); 1253 } 1254 } 1255 1256 return (0); 1257} 1258 1259int 1260ctl_port_disable(ctl_port_type port_type) 1261{ 1262 struct ctl_softc *softc; 1263 struct ctl_port *port; 1264 1265 softc = control_softc; 1266 1267 STAILQ_FOREACH(port, &softc->port_list, links) { 1268 if (port_type & port->port_type) 1269 ctl_port_offline(port); 1270 } 1271 1272 return (0); 1273} 1274 1275/* 1276 * Returns 0 for success, 1 for failure. 1277 * Currently the only failure mode is if there aren't enough entries 1278 * allocated. So, in case of a failure, look at num_entries_dropped, 1279 * reallocate and try again. 1280 */ 1281int 1282ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1283 int *num_entries_filled, int *num_entries_dropped, 1284 ctl_port_type port_type, int no_virtual) 1285{ 1286 struct ctl_softc *softc; 1287 struct ctl_port *port; 1288 int entries_dropped, entries_filled; 1289 int retval; 1290 int i; 1291 1292 softc = control_softc; 1293 1294 retval = 0; 1295 entries_filled = 0; 1296 entries_dropped = 0; 1297 1298 i = 0; 1299 mtx_lock(&softc->ctl_lock); 1300 STAILQ_FOREACH(port, &softc->port_list, links) { 1301 struct ctl_port_entry *entry; 1302 1303 if ((port->port_type & port_type) == 0) 1304 continue; 1305 1306 if ((no_virtual != 0) 1307 && (port->virtual_port != 0)) 1308 continue; 1309 1310 if (entries_filled >= num_entries_alloced) { 1311 entries_dropped++; 1312 continue; 1313 } 1314 entry = &entries[i]; 1315 1316 entry->port_type = port->port_type; 1317 strlcpy(entry->port_name, port->port_name, 1318 sizeof(entry->port_name)); 1319 entry->physical_port = port->physical_port; 1320 entry->virtual_port = port->virtual_port; 1321 entry->wwnn = port->wwnn; 1322 entry->wwpn = port->wwpn; 1323 1324 i++; 1325 entries_filled++; 1326 } 1327 1328 mtx_unlock(&softc->ctl_lock); 1329 1330 if (entries_dropped > 0) 1331 retval = 1; 1332 1333 *num_entries_dropped = entries_dropped; 1334 *num_entries_filled = entries_filled; 1335 1336 return (retval); 1337} 1338 1339static void 1340ctl_ioctl_online(void *arg) 1341{ 1342 struct ctl_ioctl_info *ioctl_info; 1343 1344 ioctl_info = (struct ctl_ioctl_info *)arg; 1345 1346 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1347} 1348 1349static void 1350ctl_ioctl_offline(void *arg) 1351{ 1352 struct ctl_ioctl_info *ioctl_info; 1353 1354 ioctl_info = (struct ctl_ioctl_info *)arg; 1355 1356 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1357} 1358 1359/* 1360 * Remove an initiator by port number and initiator ID. 1361 * Returns 0 for success, 1 for failure. 1362 */ 1363int 1364ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1365{ 1366 struct ctl_softc *softc; 1367 1368 softc = control_softc; 1369 1370 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1371 1372 if ((targ_port < 0) 1373 || (targ_port > CTL_MAX_PORTS)) { 1374 printf("%s: invalid port number %d\n", __func__, targ_port); 1375 return (1); 1376 } 1377 if (iid > CTL_MAX_INIT_PER_PORT) { 1378 printf("%s: initiator ID %u > maximun %u!\n", 1379 __func__, iid, CTL_MAX_INIT_PER_PORT); 1380 return (1); 1381 } 1382 1383 mtx_lock(&softc->ctl_lock); 1384 1385 softc->wwpn_iid[targ_port][iid].in_use = 0; 1386 1387 mtx_unlock(&softc->ctl_lock); 1388 1389 return (0); 1390} 1391 1392/* 1393 * Add an initiator to the initiator map. 1394 * Returns 0 for success, 1 for failure. 1395 */ 1396int 1397ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1398{ 1399 struct ctl_softc *softc; 1400 int retval; 1401 1402 softc = control_softc; 1403 1404 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1405 1406 retval = 0; 1407 1408 if ((targ_port < 0) 1409 || (targ_port > CTL_MAX_PORTS)) { 1410 printf("%s: invalid port number %d\n", __func__, targ_port); 1411 return (1); 1412 } 1413 if (iid > CTL_MAX_INIT_PER_PORT) { 1414 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1415 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1416 return (1); 1417 } 1418 1419 mtx_lock(&softc->ctl_lock); 1420 1421 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1422 /* 1423 * We don't treat this as an error. 1424 */ 1425 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1426 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1427 __func__, targ_port, iid, (uintmax_t)wwpn); 1428 goto bailout; 1429 } 1430 1431 /* 1432 * This is an error, but what do we do about it? The 1433 * driver is telling us we have a new WWPN for this 1434 * initiator ID, so we pretty much need to use it. 1435 */ 1436 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1437 "still at that address\n", __func__, targ_port, iid, 1438 (uintmax_t)wwpn, 1439 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1440 1441 /* 1442 * XXX KDM clear have_ca and ua_pending on each LUN for 1443 * this initiator. 1444 */ 1445 } 1446 softc->wwpn_iid[targ_port][iid].in_use = 1; 1447 softc->wwpn_iid[targ_port][iid].iid = iid; 1448 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1449 softc->wwpn_iid[targ_port][iid].port = targ_port; 1450 1451bailout: 1452 1453 mtx_unlock(&softc->ctl_lock); 1454 1455 return (retval); 1456} 1457 1458static int 1459ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1460{ 1461 return (0); 1462} 1463 1464static int 1465ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1466{ 1467 return (0); 1468} 1469 1470/* 1471 * Data movement routine for the CTL ioctl frontend port. 1472 */ 1473static int 1474ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1475{ 1476 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1477 struct ctl_sg_entry ext_entry, kern_entry; 1478 int ext_sglen, ext_sg_entries, kern_sg_entries; 1479 int ext_sg_start, ext_offset; 1480 int len_to_copy, len_copied; 1481 int kern_watermark, ext_watermark; 1482 int ext_sglist_malloced; 1483 int i, j; 1484 1485 ext_sglist_malloced = 0; 1486 ext_sg_start = 0; 1487 ext_offset = 0; 1488 1489 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1490 1491 /* 1492 * If this flag is set, fake the data transfer. 1493 */ 1494 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1495 ctsio->ext_data_filled = ctsio->ext_data_len; 1496 goto bailout; 1497 } 1498 1499 /* 1500 * To simplify things here, if we have a single buffer, stick it in 1501 * a S/G entry and just make it a single entry S/G list. 1502 */ 1503 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1504 int len_seen; 1505 1506 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1507 1508 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1509 M_WAITOK); 1510 ext_sglist_malloced = 1; 1511 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1512 ext_sglen) != 0) { 1513 ctl_set_internal_failure(ctsio, 1514 /*sks_valid*/ 0, 1515 /*retry_count*/ 0); 1516 goto bailout; 1517 } 1518 ext_sg_entries = ctsio->ext_sg_entries; 1519 len_seen = 0; 1520 for (i = 0; i < ext_sg_entries; i++) { 1521 if ((len_seen + ext_sglist[i].len) >= 1522 ctsio->ext_data_filled) { 1523 ext_sg_start = i; 1524 ext_offset = ctsio->ext_data_filled - len_seen; 1525 break; 1526 } 1527 len_seen += ext_sglist[i].len; 1528 } 1529 } else { 1530 ext_sglist = &ext_entry; 1531 ext_sglist->addr = ctsio->ext_data_ptr; 1532 ext_sglist->len = ctsio->ext_data_len; 1533 ext_sg_entries = 1; 1534 ext_sg_start = 0; 1535 ext_offset = ctsio->ext_data_filled; 1536 } 1537 1538 if (ctsio->kern_sg_entries > 0) { 1539 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1540 kern_sg_entries = ctsio->kern_sg_entries; 1541 } else { 1542 kern_sglist = &kern_entry; 1543 kern_sglist->addr = ctsio->kern_data_ptr; 1544 kern_sglist->len = ctsio->kern_data_len; 1545 kern_sg_entries = 1; 1546 } 1547 1548 1549 kern_watermark = 0; 1550 ext_watermark = ext_offset; 1551 len_copied = 0; 1552 for (i = ext_sg_start, j = 0; 1553 i < ext_sg_entries && j < kern_sg_entries;) { 1554 uint8_t *ext_ptr, *kern_ptr; 1555 1556 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1557 kern_sglist[j].len - kern_watermark); 1558 1559 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1560 ext_ptr = ext_ptr + ext_watermark; 1561 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1562 /* 1563 * XXX KDM fix this! 1564 */ 1565 panic("need to implement bus address support"); 1566#if 0 1567 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1568#endif 1569 } else 1570 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1571 kern_ptr = kern_ptr + kern_watermark; 1572 1573 kern_watermark += len_to_copy; 1574 ext_watermark += len_to_copy; 1575 1576 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1577 CTL_FLAG_DATA_IN) { 1578 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1579 "bytes to user\n", len_to_copy)); 1580 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1581 "to %p\n", kern_ptr, ext_ptr)); 1582 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1583 ctl_set_internal_failure(ctsio, 1584 /*sks_valid*/ 0, 1585 /*retry_count*/ 0); 1586 goto bailout; 1587 } 1588 } else { 1589 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1590 "bytes from user\n", len_to_copy)); 1591 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1592 "to %p\n", ext_ptr, kern_ptr)); 1593 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1594 ctl_set_internal_failure(ctsio, 1595 /*sks_valid*/ 0, 1596 /*retry_count*/0); 1597 goto bailout; 1598 } 1599 } 1600 1601 len_copied += len_to_copy; 1602 1603 if (ext_sglist[i].len == ext_watermark) { 1604 i++; 1605 ext_watermark = 0; 1606 } 1607 1608 if (kern_sglist[j].len == kern_watermark) { 1609 j++; 1610 kern_watermark = 0; 1611 } 1612 } 1613 1614 ctsio->ext_data_filled += len_copied; 1615 1616 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1617 "kern_sg_entries: %d\n", ext_sg_entries, 1618 kern_sg_entries)); 1619 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1620 "kern_data_len = %d\n", ctsio->ext_data_len, 1621 ctsio->kern_data_len)); 1622 1623 1624 /* XXX KDM set residual?? */ 1625bailout: 1626 1627 if (ext_sglist_malloced != 0) 1628 free(ext_sglist, M_CTL); 1629 1630 return (CTL_RETVAL_COMPLETE); 1631} 1632 1633/* 1634 * Serialize a command that went down the "wrong" side, and so was sent to 1635 * this controller for execution. The logic is a little different than the 1636 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1637 * sent back to the other side, but in the success case, we execute the 1638 * command on this side (XFER mode) or tell the other side to execute it 1639 * (SER_ONLY mode). 1640 */ 1641static int 1642ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio) 1643{ 1644 struct ctl_softc *ctl_softc; 1645 union ctl_ha_msg msg_info; 1646 struct ctl_lun *lun; 1647 int retval = 0; 1648 uint32_t targ_lun; 1649 1650 ctl_softc = control_softc; 1651 1652 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 1653 lun = ctl_softc->ctl_luns[targ_lun]; 1654 if (lun==NULL) 1655 { 1656 /* 1657 * Why isn't LUN defined? The other side wouldn't 1658 * send a cmd if the LUN is undefined. 1659 */ 1660 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1661 1662 /* "Logical unit not supported" */ 1663 ctl_set_sense_data(&msg_info.scsi.sense_data, 1664 lun, 1665 /*sense_format*/SSD_TYPE_NONE, 1666 /*current_error*/ 1, 1667 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1668 /*asc*/ 0x25, 1669 /*ascq*/ 0x00, 1670 SSD_ELEM_NONE); 1671 1672 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1673 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1674 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1675 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1676 msg_info.hdr.serializing_sc = NULL; 1677 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1678 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1679 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1680 } 1681 return(1); 1682 1683 } 1684 1685 mtx_lock(&lun->lun_lock); 1686 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1687 1688 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1689 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1690 ooa_links))) { 1691 case CTL_ACTION_BLOCK: 1692 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1693 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1694 blocked_links); 1695 break; 1696 case CTL_ACTION_PASS: 1697 case CTL_ACTION_SKIP: 1698 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1699 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1700 ctl_enqueue_rtr((union ctl_io *)ctsio); 1701 } else { 1702 1703 /* send msg back to other side */ 1704 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1705 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1706 msg_info.hdr.msg_type = CTL_MSG_R2R; 1707#if 0 1708 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1709#endif 1710 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1711 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1712 } 1713 } 1714 break; 1715 case CTL_ACTION_OVERLAP: 1716 /* OVERLAPPED COMMANDS ATTEMPTED */ 1717 ctl_set_sense_data(&msg_info.scsi.sense_data, 1718 lun, 1719 /*sense_format*/SSD_TYPE_NONE, 1720 /*current_error*/ 1, 1721 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1722 /*asc*/ 0x4E, 1723 /*ascq*/ 0x00, 1724 SSD_ELEM_NONE); 1725 1726 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1727 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1728 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1729 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1730 msg_info.hdr.serializing_sc = NULL; 1731 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1732#if 0 1733 printf("BAD JUJU:Major Bummer Overlap\n"); 1734#endif 1735 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1736 retval = 1; 1737 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1738 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1739 } 1740 break; 1741 case CTL_ACTION_OVERLAP_TAG: 1742 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1743 ctl_set_sense_data(&msg_info.scsi.sense_data, 1744 lun, 1745 /*sense_format*/SSD_TYPE_NONE, 1746 /*current_error*/ 1, 1747 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1748 /*asc*/ 0x4D, 1749 /*ascq*/ ctsio->tag_num & 0xff, 1750 SSD_ELEM_NONE); 1751 1752 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1753 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1754 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1755 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1756 msg_info.hdr.serializing_sc = NULL; 1757 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1758#if 0 1759 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1760#endif 1761 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1762 retval = 1; 1763 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1764 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1765 } 1766 break; 1767 case CTL_ACTION_ERROR: 1768 default: 1769 /* "Internal target failure" */ 1770 ctl_set_sense_data(&msg_info.scsi.sense_data, 1771 lun, 1772 /*sense_format*/SSD_TYPE_NONE, 1773 /*current_error*/ 1, 1774 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1775 /*asc*/ 0x44, 1776 /*ascq*/ 0x00, 1777 SSD_ELEM_NONE); 1778 1779 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1780 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1781 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1782 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1783 msg_info.hdr.serializing_sc = NULL; 1784 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1785#if 0 1786 printf("BAD JUJU:Major Bummer HW Error\n"); 1787#endif 1788 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1789 retval = 1; 1790 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1791 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1792 } 1793 break; 1794 } 1795 mtx_unlock(&lun->lun_lock); 1796 return (retval); 1797} 1798 1799static int 1800ctl_ioctl_submit_wait(union ctl_io *io) 1801{ 1802 struct ctl_fe_ioctl_params params; 1803 ctl_fe_ioctl_state last_state; 1804 int done, retval; 1805 1806 retval = 0; 1807 1808 bzero(¶ms, sizeof(params)); 1809 1810 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1811 cv_init(¶ms.sem, "ctlioccv"); 1812 params.state = CTL_IOCTL_INPROG; 1813 last_state = params.state; 1814 1815 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1816 1817 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1818 1819 /* This shouldn't happen */ 1820 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1821 return (retval); 1822 1823 done = 0; 1824 1825 do { 1826 mtx_lock(¶ms.ioctl_mtx); 1827 /* 1828 * Check the state here, and don't sleep if the state has 1829 * already changed (i.e. wakeup has already occured, but we 1830 * weren't waiting yet). 1831 */ 1832 if (params.state == last_state) { 1833 /* XXX KDM cv_wait_sig instead? */ 1834 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1835 } 1836 last_state = params.state; 1837 1838 switch (params.state) { 1839 case CTL_IOCTL_INPROG: 1840 /* Why did we wake up? */ 1841 /* XXX KDM error here? */ 1842 mtx_unlock(¶ms.ioctl_mtx); 1843 break; 1844 case CTL_IOCTL_DATAMOVE: 1845 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1846 1847 /* 1848 * change last_state back to INPROG to avoid 1849 * deadlock on subsequent data moves. 1850 */ 1851 params.state = last_state = CTL_IOCTL_INPROG; 1852 1853 mtx_unlock(¶ms.ioctl_mtx); 1854 ctl_ioctl_do_datamove(&io->scsiio); 1855 /* 1856 * Note that in some cases, most notably writes, 1857 * this will queue the I/O and call us back later. 1858 * In other cases, generally reads, this routine 1859 * will immediately call back and wake us up, 1860 * probably using our own context. 1861 */ 1862 io->scsiio.be_move_done(io); 1863 break; 1864 case CTL_IOCTL_DONE: 1865 mtx_unlock(¶ms.ioctl_mtx); 1866 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1867 done = 1; 1868 break; 1869 default: 1870 mtx_unlock(¶ms.ioctl_mtx); 1871 /* XXX KDM error here? */ 1872 break; 1873 } 1874 } while (done == 0); 1875 1876 mtx_destroy(¶ms.ioctl_mtx); 1877 cv_destroy(¶ms.sem); 1878 1879 return (CTL_RETVAL_COMPLETE); 1880} 1881 1882static void 1883ctl_ioctl_datamove(union ctl_io *io) 1884{ 1885 struct ctl_fe_ioctl_params *params; 1886 1887 params = (struct ctl_fe_ioctl_params *) 1888 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1889 1890 mtx_lock(¶ms->ioctl_mtx); 1891 params->state = CTL_IOCTL_DATAMOVE; 1892 cv_broadcast(¶ms->sem); 1893 mtx_unlock(¶ms->ioctl_mtx); 1894} 1895 1896static void 1897ctl_ioctl_done(union ctl_io *io) 1898{ 1899 struct ctl_fe_ioctl_params *params; 1900 1901 params = (struct ctl_fe_ioctl_params *) 1902 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1903 1904 mtx_lock(¶ms->ioctl_mtx); 1905 params->state = CTL_IOCTL_DONE; 1906 cv_broadcast(¶ms->sem); 1907 mtx_unlock(¶ms->ioctl_mtx); 1908} 1909 1910static void 1911ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1912{ 1913 struct ctl_fe_ioctl_startstop_info *sd_info; 1914 1915 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1916 1917 sd_info->hs_info.status = metatask->status; 1918 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1919 sd_info->hs_info.luns_complete = 1920 metatask->taskinfo.startstop.luns_complete; 1921 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1922 1923 cv_broadcast(&sd_info->sem); 1924} 1925 1926static void 1927ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1928{ 1929 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1930 1931 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1932 1933 mtx_lock(fe_bbr_info->lock); 1934 fe_bbr_info->bbr_info->status = metatask->status; 1935 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1936 fe_bbr_info->wakeup_done = 1; 1937 mtx_unlock(fe_bbr_info->lock); 1938 1939 cv_broadcast(&fe_bbr_info->sem); 1940} 1941 1942/* 1943 * Returns 0 for success, errno for failure. 1944 */ 1945static int 1946ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1947 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1948{ 1949 union ctl_io *io; 1950 int retval; 1951 1952 retval = 0; 1953 1954 mtx_lock(&lun->lun_lock); 1955 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 1956 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 1957 ooa_links)) { 1958 struct ctl_ooa_entry *entry; 1959 1960 /* 1961 * If we've got more than we can fit, just count the 1962 * remaining entries. 1963 */ 1964 if (*cur_fill_num >= ooa_hdr->alloc_num) 1965 continue; 1966 1967 entry = &kern_entries[*cur_fill_num]; 1968 1969 entry->tag_num = io->scsiio.tag_num; 1970 entry->lun_num = lun->lun; 1971#ifdef CTL_TIME_IO 1972 entry->start_bt = io->io_hdr.start_bt; 1973#endif 1974 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 1975 entry->cdb_len = io->scsiio.cdb_len; 1976 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 1977 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 1978 1979 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 1980 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 1981 1982 if (io->io_hdr.flags & CTL_FLAG_ABORT) 1983 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 1984 1985 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 1986 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 1987 1988 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 1989 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 1990 } 1991 mtx_unlock(&lun->lun_lock); 1992 1993 return (retval); 1994} 1995 1996static void * 1997ctl_copyin_alloc(void *user_addr, int len, char *error_str, 1998 size_t error_str_len) 1999{ 2000 void *kptr; 2001 2002 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2003 2004 if (copyin(user_addr, kptr, len) != 0) { 2005 snprintf(error_str, error_str_len, "Error copying %d bytes " 2006 "from user address %p to kernel address %p", len, 2007 user_addr, kptr); 2008 free(kptr, M_CTL); 2009 return (NULL); 2010 } 2011 2012 return (kptr); 2013} 2014 2015static void 2016ctl_free_args(int num_args, struct ctl_be_arg *args) 2017{ 2018 int i; 2019 2020 if (args == NULL) 2021 return; 2022 2023 for (i = 0; i < num_args; i++) { 2024 free(args[i].kname, M_CTL); 2025 free(args[i].kvalue, M_CTL); 2026 } 2027 2028 free(args, M_CTL); 2029} 2030 2031static struct ctl_be_arg * 2032ctl_copyin_args(int num_args, struct ctl_be_arg *uargs, 2033 char *error_str, size_t error_str_len) 2034{ 2035 struct ctl_be_arg *args; 2036 int i; 2037 2038 args = ctl_copyin_alloc(uargs, num_args * sizeof(*args), 2039 error_str, error_str_len); 2040 2041 if (args == NULL) 2042 goto bailout; 2043 2044 for (i = 0; i < num_args; i++) { 2045 args[i].kname = NULL; 2046 args[i].kvalue = NULL; 2047 } 2048 2049 for (i = 0; i < num_args; i++) { 2050 uint8_t *tmpptr; 2051 2052 args[i].kname = ctl_copyin_alloc(args[i].name, 2053 args[i].namelen, error_str, error_str_len); 2054 if (args[i].kname == NULL) 2055 goto bailout; 2056 2057 if (args[i].kname[args[i].namelen - 1] != '\0') { 2058 snprintf(error_str, error_str_len, "Argument %d " 2059 "name is not NUL-terminated", i); 2060 goto bailout; 2061 } 2062 2063 if (args[i].flags & CTL_BEARG_RD) { 2064 tmpptr = ctl_copyin_alloc(args[i].value, 2065 args[i].vallen, error_str, error_str_len); 2066 if (tmpptr == NULL) 2067 goto bailout; 2068 if ((args[i].flags & CTL_BEARG_ASCII) 2069 && (tmpptr[args[i].vallen - 1] != '\0')) { 2070 snprintf(error_str, error_str_len, "Argument " 2071 "%d value is not NUL-terminated", i); 2072 goto bailout; 2073 } 2074 args[i].kvalue = tmpptr; 2075 } else { 2076 args[i].kvalue = malloc(args[i].vallen, 2077 M_CTL, M_WAITOK | M_ZERO); 2078 } 2079 } 2080 2081 return (args); 2082bailout: 2083 2084 ctl_free_args(num_args, args); 2085 2086 return (NULL); 2087} 2088 2089static void 2090ctl_copyout_args(int num_args, struct ctl_be_arg *args) 2091{ 2092 int i; 2093 2094 for (i = 0; i < num_args; i++) { 2095 if (args[i].flags & CTL_BEARG_WR) 2096 copyout(args[i].kvalue, args[i].value, args[i].vallen); 2097 } 2098} 2099 2100/* 2101 * Escape characters that are illegal or not recommended in XML. 2102 */ 2103int 2104ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2105{ 2106 int retval; 2107 2108 retval = 0; 2109 2110 for (; *str; str++) { 2111 switch (*str) { 2112 case '&': 2113 retval = sbuf_printf(sb, "&"); 2114 break; 2115 case '>': 2116 retval = sbuf_printf(sb, ">"); 2117 break; 2118 case '<': 2119 retval = sbuf_printf(sb, "<"); 2120 break; 2121 default: 2122 retval = sbuf_putc(sb, *str); 2123 break; 2124 } 2125 2126 if (retval != 0) 2127 break; 2128 2129 } 2130 2131 return (retval); 2132} 2133 2134static int 2135ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2136 struct thread *td) 2137{ 2138 struct ctl_softc *softc; 2139 int retval; 2140 2141 softc = control_softc; 2142 2143 retval = 0; 2144 2145 switch (cmd) { 2146 case CTL_IO: { 2147 union ctl_io *io; 2148 void *pool_tmp; 2149 2150 /* 2151 * If we haven't been "enabled", don't allow any SCSI I/O 2152 * to this FETD. 2153 */ 2154 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2155 retval = EPERM; 2156 break; 2157 } 2158 2159 io = ctl_alloc_io(softc->ioctl_info.port.ctl_pool_ref); 2160 if (io == NULL) { 2161 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2162 retval = ENOSPC; 2163 break; 2164 } 2165 2166 /* 2167 * Need to save the pool reference so it doesn't get 2168 * spammed by the user's ctl_io. 2169 */ 2170 pool_tmp = io->io_hdr.pool; 2171 2172 memcpy(io, (void *)addr, sizeof(*io)); 2173 2174 io->io_hdr.pool = pool_tmp; 2175 /* 2176 * No status yet, so make sure the status is set properly. 2177 */ 2178 io->io_hdr.status = CTL_STATUS_NONE; 2179 2180 /* 2181 * The user sets the initiator ID, target and LUN IDs. 2182 */ 2183 io->io_hdr.nexus.targ_port = softc->ioctl_info.port.targ_port; 2184 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2185 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2186 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2187 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2188 2189 retval = ctl_ioctl_submit_wait(io); 2190 2191 if (retval != 0) { 2192 ctl_free_io(io); 2193 break; 2194 } 2195 2196 memcpy((void *)addr, io, sizeof(*io)); 2197 2198 /* return this to our pool */ 2199 ctl_free_io(io); 2200 2201 break; 2202 } 2203 case CTL_ENABLE_PORT: 2204 case CTL_DISABLE_PORT: 2205 case CTL_SET_PORT_WWNS: { 2206 struct ctl_port *port; 2207 struct ctl_port_entry *entry; 2208 2209 entry = (struct ctl_port_entry *)addr; 2210 2211 mtx_lock(&softc->ctl_lock); 2212 STAILQ_FOREACH(port, &softc->port_list, links) { 2213 int action, done; 2214 2215 action = 0; 2216 done = 0; 2217 2218 if ((entry->port_type == CTL_PORT_NONE) 2219 && (entry->targ_port == port->targ_port)) { 2220 /* 2221 * If the user only wants to enable or 2222 * disable or set WWNs on a specific port, 2223 * do the operation and we're done. 2224 */ 2225 action = 1; 2226 done = 1; 2227 } else if (entry->port_type & port->port_type) { 2228 /* 2229 * Compare the user's type mask with the 2230 * particular frontend type to see if we 2231 * have a match. 2232 */ 2233 action = 1; 2234 done = 0; 2235 2236 /* 2237 * Make sure the user isn't trying to set 2238 * WWNs on multiple ports at the same time. 2239 */ 2240 if (cmd == CTL_SET_PORT_WWNS) { 2241 printf("%s: Can't set WWNs on " 2242 "multiple ports\n", __func__); 2243 retval = EINVAL; 2244 break; 2245 } 2246 } 2247 if (action != 0) { 2248 /* 2249 * XXX KDM we have to drop the lock here, 2250 * because the online/offline operations 2251 * can potentially block. We need to 2252 * reference count the frontends so they 2253 * can't go away, 2254 */ 2255 mtx_unlock(&softc->ctl_lock); 2256 2257 if (cmd == CTL_ENABLE_PORT) { 2258 struct ctl_lun *lun; 2259 2260 STAILQ_FOREACH(lun, &softc->lun_list, 2261 links) { 2262 port->lun_enable(port->targ_lun_arg, 2263 lun->target, 2264 lun->lun); 2265 } 2266 2267 ctl_port_online(port); 2268 } else if (cmd == CTL_DISABLE_PORT) { 2269 struct ctl_lun *lun; 2270 2271 ctl_port_offline(port); 2272 2273 STAILQ_FOREACH(lun, &softc->lun_list, 2274 links) { 2275 port->lun_disable( 2276 port->targ_lun_arg, 2277 lun->target, 2278 lun->lun); 2279 } 2280 } 2281 2282 mtx_lock(&softc->ctl_lock); 2283 2284 if (cmd == CTL_SET_PORT_WWNS) 2285 ctl_port_set_wwns(port, 2286 (entry->flags & CTL_PORT_WWNN_VALID) ? 2287 1 : 0, entry->wwnn, 2288 (entry->flags & CTL_PORT_WWPN_VALID) ? 2289 1 : 0, entry->wwpn); 2290 } 2291 if (done != 0) 2292 break; 2293 } 2294 mtx_unlock(&softc->ctl_lock); 2295 break; 2296 } 2297 case CTL_GET_PORT_LIST: { 2298 struct ctl_port *port; 2299 struct ctl_port_list *list; 2300 int i; 2301 2302 list = (struct ctl_port_list *)addr; 2303 2304 if (list->alloc_len != (list->alloc_num * 2305 sizeof(struct ctl_port_entry))) { 2306 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2307 "alloc_num %u * sizeof(struct ctl_port_entry) " 2308 "%zu\n", __func__, list->alloc_len, 2309 list->alloc_num, sizeof(struct ctl_port_entry)); 2310 retval = EINVAL; 2311 break; 2312 } 2313 list->fill_len = 0; 2314 list->fill_num = 0; 2315 list->dropped_num = 0; 2316 i = 0; 2317 mtx_lock(&softc->ctl_lock); 2318 STAILQ_FOREACH(port, &softc->port_list, links) { 2319 struct ctl_port_entry entry, *list_entry; 2320 2321 if (list->fill_num >= list->alloc_num) { 2322 list->dropped_num++; 2323 continue; 2324 } 2325 2326 entry.port_type = port->port_type; 2327 strlcpy(entry.port_name, port->port_name, 2328 sizeof(entry.port_name)); 2329 entry.targ_port = port->targ_port; 2330 entry.physical_port = port->physical_port; 2331 entry.virtual_port = port->virtual_port; 2332 entry.wwnn = port->wwnn; 2333 entry.wwpn = port->wwpn; 2334 if (port->status & CTL_PORT_STATUS_ONLINE) 2335 entry.online = 1; 2336 else 2337 entry.online = 0; 2338 2339 list_entry = &list->entries[i]; 2340 2341 retval = copyout(&entry, list_entry, sizeof(entry)); 2342 if (retval != 0) { 2343 printf("%s: CTL_GET_PORT_LIST: copyout " 2344 "returned %d\n", __func__, retval); 2345 break; 2346 } 2347 i++; 2348 list->fill_num++; 2349 list->fill_len += sizeof(entry); 2350 } 2351 mtx_unlock(&softc->ctl_lock); 2352 2353 /* 2354 * If this is non-zero, we had a copyout fault, so there's 2355 * probably no point in attempting to set the status inside 2356 * the structure. 2357 */ 2358 if (retval != 0) 2359 break; 2360 2361 if (list->dropped_num > 0) 2362 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2363 else 2364 list->status = CTL_PORT_LIST_OK; 2365 break; 2366 } 2367 case CTL_DUMP_OOA: { 2368 struct ctl_lun *lun; 2369 union ctl_io *io; 2370 char printbuf[128]; 2371 struct sbuf sb; 2372 2373 mtx_lock(&softc->ctl_lock); 2374 printf("Dumping OOA queues:\n"); 2375 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2376 mtx_lock(&lun->lun_lock); 2377 for (io = (union ctl_io *)TAILQ_FIRST( 2378 &lun->ooa_queue); io != NULL; 2379 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2380 ooa_links)) { 2381 sbuf_new(&sb, printbuf, sizeof(printbuf), 2382 SBUF_FIXEDLEN); 2383 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2384 (intmax_t)lun->lun, 2385 io->scsiio.tag_num, 2386 (io->io_hdr.flags & 2387 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2388 (io->io_hdr.flags & 2389 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2390 (io->io_hdr.flags & 2391 CTL_FLAG_ABORT) ? " ABORT" : "", 2392 (io->io_hdr.flags & 2393 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2394 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2395 sbuf_finish(&sb); 2396 printf("%s\n", sbuf_data(&sb)); 2397 } 2398 mtx_unlock(&lun->lun_lock); 2399 } 2400 printf("OOA queues dump done\n"); 2401 mtx_unlock(&softc->ctl_lock); 2402 break; 2403 } 2404 case CTL_GET_OOA: { 2405 struct ctl_lun *lun; 2406 struct ctl_ooa *ooa_hdr; 2407 struct ctl_ooa_entry *entries; 2408 uint32_t cur_fill_num; 2409 2410 ooa_hdr = (struct ctl_ooa *)addr; 2411 2412 if ((ooa_hdr->alloc_len == 0) 2413 || (ooa_hdr->alloc_num == 0)) { 2414 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2415 "must be non-zero\n", __func__, 2416 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2417 retval = EINVAL; 2418 break; 2419 } 2420 2421 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2422 sizeof(struct ctl_ooa_entry))) { 2423 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2424 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2425 __func__, ooa_hdr->alloc_len, 2426 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2427 retval = EINVAL; 2428 break; 2429 } 2430 2431 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2432 if (entries == NULL) { 2433 printf("%s: could not allocate %d bytes for OOA " 2434 "dump\n", __func__, ooa_hdr->alloc_len); 2435 retval = ENOMEM; 2436 break; 2437 } 2438 2439 mtx_lock(&softc->ctl_lock); 2440 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2441 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2442 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2443 mtx_unlock(&softc->ctl_lock); 2444 free(entries, M_CTL); 2445 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2446 __func__, (uintmax_t)ooa_hdr->lun_num); 2447 retval = EINVAL; 2448 break; 2449 } 2450 2451 cur_fill_num = 0; 2452 2453 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2454 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2455 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2456 ooa_hdr, entries); 2457 if (retval != 0) 2458 break; 2459 } 2460 if (retval != 0) { 2461 mtx_unlock(&softc->ctl_lock); 2462 free(entries, M_CTL); 2463 break; 2464 } 2465 } else { 2466 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2467 2468 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2469 entries); 2470 } 2471 mtx_unlock(&softc->ctl_lock); 2472 2473 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2474 ooa_hdr->fill_len = ooa_hdr->fill_num * 2475 sizeof(struct ctl_ooa_entry); 2476 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2477 if (retval != 0) { 2478 printf("%s: error copying out %d bytes for OOA dump\n", 2479 __func__, ooa_hdr->fill_len); 2480 } 2481 2482 getbintime(&ooa_hdr->cur_bt); 2483 2484 if (cur_fill_num > ooa_hdr->alloc_num) { 2485 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2486 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2487 } else { 2488 ooa_hdr->dropped_num = 0; 2489 ooa_hdr->status = CTL_OOA_OK; 2490 } 2491 2492 free(entries, M_CTL); 2493 break; 2494 } 2495 case CTL_CHECK_OOA: { 2496 union ctl_io *io; 2497 struct ctl_lun *lun; 2498 struct ctl_ooa_info *ooa_info; 2499 2500 2501 ooa_info = (struct ctl_ooa_info *)addr; 2502 2503 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2504 ooa_info->status = CTL_OOA_INVALID_LUN; 2505 break; 2506 } 2507 mtx_lock(&softc->ctl_lock); 2508 lun = softc->ctl_luns[ooa_info->lun_id]; 2509 if (lun == NULL) { 2510 mtx_unlock(&softc->ctl_lock); 2511 ooa_info->status = CTL_OOA_INVALID_LUN; 2512 break; 2513 } 2514 mtx_lock(&lun->lun_lock); 2515 mtx_unlock(&softc->ctl_lock); 2516 ooa_info->num_entries = 0; 2517 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2518 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2519 &io->io_hdr, ooa_links)) { 2520 ooa_info->num_entries++; 2521 } 2522 mtx_unlock(&lun->lun_lock); 2523 2524 ooa_info->status = CTL_OOA_SUCCESS; 2525 2526 break; 2527 } 2528 case CTL_HARD_START: 2529 case CTL_HARD_STOP: { 2530 struct ctl_fe_ioctl_startstop_info ss_info; 2531 struct cfi_metatask *metatask; 2532 struct mtx hs_mtx; 2533 2534 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2535 2536 cv_init(&ss_info.sem, "hard start/stop cv" ); 2537 2538 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2539 if (metatask == NULL) { 2540 retval = ENOMEM; 2541 mtx_destroy(&hs_mtx); 2542 break; 2543 } 2544 2545 if (cmd == CTL_HARD_START) 2546 metatask->tasktype = CFI_TASK_STARTUP; 2547 else 2548 metatask->tasktype = CFI_TASK_SHUTDOWN; 2549 2550 metatask->callback = ctl_ioctl_hard_startstop_callback; 2551 metatask->callback_arg = &ss_info; 2552 2553 cfi_action(metatask); 2554 2555 /* Wait for the callback */ 2556 mtx_lock(&hs_mtx); 2557 cv_wait_sig(&ss_info.sem, &hs_mtx); 2558 mtx_unlock(&hs_mtx); 2559 2560 /* 2561 * All information has been copied from the metatask by the 2562 * time cv_broadcast() is called, so we free the metatask here. 2563 */ 2564 cfi_free_metatask(metatask); 2565 2566 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2567 2568 mtx_destroy(&hs_mtx); 2569 break; 2570 } 2571 case CTL_BBRREAD: { 2572 struct ctl_bbrread_info *bbr_info; 2573 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2574 struct mtx bbr_mtx; 2575 struct cfi_metatask *metatask; 2576 2577 bbr_info = (struct ctl_bbrread_info *)addr; 2578 2579 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2580 2581 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2582 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2583 2584 fe_bbr_info.bbr_info = bbr_info; 2585 fe_bbr_info.lock = &bbr_mtx; 2586 2587 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2588 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2589 2590 if (metatask == NULL) { 2591 mtx_destroy(&bbr_mtx); 2592 cv_destroy(&fe_bbr_info.sem); 2593 retval = ENOMEM; 2594 break; 2595 } 2596 metatask->tasktype = CFI_TASK_BBRREAD; 2597 metatask->callback = ctl_ioctl_bbrread_callback; 2598 metatask->callback_arg = &fe_bbr_info; 2599 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2600 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2601 metatask->taskinfo.bbrread.len = bbr_info->len; 2602 2603 cfi_action(metatask); 2604 2605 mtx_lock(&bbr_mtx); 2606 while (fe_bbr_info.wakeup_done == 0) 2607 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2608 mtx_unlock(&bbr_mtx); 2609 2610 bbr_info->status = metatask->status; 2611 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2612 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2613 memcpy(&bbr_info->sense_data, 2614 &metatask->taskinfo.bbrread.sense_data, 2615 ctl_min(sizeof(bbr_info->sense_data), 2616 sizeof(metatask->taskinfo.bbrread.sense_data))); 2617 2618 cfi_free_metatask(metatask); 2619 2620 mtx_destroy(&bbr_mtx); 2621 cv_destroy(&fe_bbr_info.sem); 2622 2623 break; 2624 } 2625 case CTL_DELAY_IO: { 2626 struct ctl_io_delay_info *delay_info; 2627#ifdef CTL_IO_DELAY 2628 struct ctl_lun *lun; 2629#endif /* CTL_IO_DELAY */ 2630 2631 delay_info = (struct ctl_io_delay_info *)addr; 2632 2633#ifdef CTL_IO_DELAY 2634 mtx_lock(&softc->ctl_lock); 2635 2636 if ((delay_info->lun_id > CTL_MAX_LUNS) 2637 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2638 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2639 } else { 2640 lun = softc->ctl_luns[delay_info->lun_id]; 2641 mtx_lock(&lun->lun_lock); 2642 2643 delay_info->status = CTL_DELAY_STATUS_OK; 2644 2645 switch (delay_info->delay_type) { 2646 case CTL_DELAY_TYPE_CONT: 2647 break; 2648 case CTL_DELAY_TYPE_ONESHOT: 2649 break; 2650 default: 2651 delay_info->status = 2652 CTL_DELAY_STATUS_INVALID_TYPE; 2653 break; 2654 } 2655 2656 switch (delay_info->delay_loc) { 2657 case CTL_DELAY_LOC_DATAMOVE: 2658 lun->delay_info.datamove_type = 2659 delay_info->delay_type; 2660 lun->delay_info.datamove_delay = 2661 delay_info->delay_secs; 2662 break; 2663 case CTL_DELAY_LOC_DONE: 2664 lun->delay_info.done_type = 2665 delay_info->delay_type; 2666 lun->delay_info.done_delay = 2667 delay_info->delay_secs; 2668 break; 2669 default: 2670 delay_info->status = 2671 CTL_DELAY_STATUS_INVALID_LOC; 2672 break; 2673 } 2674 mtx_unlock(&lun->lun_lock); 2675 } 2676 2677 mtx_unlock(&softc->ctl_lock); 2678#else 2679 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2680#endif /* CTL_IO_DELAY */ 2681 break; 2682 } 2683 case CTL_REALSYNC_SET: { 2684 int *syncstate; 2685 2686 syncstate = (int *)addr; 2687 2688 mtx_lock(&softc->ctl_lock); 2689 switch (*syncstate) { 2690 case 0: 2691 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2692 break; 2693 case 1: 2694 softc->flags |= CTL_FLAG_REAL_SYNC; 2695 break; 2696 default: 2697 retval = EINVAL; 2698 break; 2699 } 2700 mtx_unlock(&softc->ctl_lock); 2701 break; 2702 } 2703 case CTL_REALSYNC_GET: { 2704 int *syncstate; 2705 2706 syncstate = (int*)addr; 2707 2708 mtx_lock(&softc->ctl_lock); 2709 if (softc->flags & CTL_FLAG_REAL_SYNC) 2710 *syncstate = 1; 2711 else 2712 *syncstate = 0; 2713 mtx_unlock(&softc->ctl_lock); 2714 2715 break; 2716 } 2717 case CTL_SETSYNC: 2718 case CTL_GETSYNC: { 2719 struct ctl_sync_info *sync_info; 2720 struct ctl_lun *lun; 2721 2722 sync_info = (struct ctl_sync_info *)addr; 2723 2724 mtx_lock(&softc->ctl_lock); 2725 lun = softc->ctl_luns[sync_info->lun_id]; 2726 if (lun == NULL) { 2727 mtx_unlock(&softc->ctl_lock); 2728 sync_info->status = CTL_GS_SYNC_NO_LUN; 2729 } 2730 /* 2731 * Get or set the sync interval. We're not bounds checking 2732 * in the set case, hopefully the user won't do something 2733 * silly. 2734 */ 2735 mtx_lock(&lun->lun_lock); 2736 mtx_unlock(&softc->ctl_lock); 2737 if (cmd == CTL_GETSYNC) 2738 sync_info->sync_interval = lun->sync_interval; 2739 else 2740 lun->sync_interval = sync_info->sync_interval; 2741 mtx_unlock(&lun->lun_lock); 2742 2743 sync_info->status = CTL_GS_SYNC_OK; 2744 2745 break; 2746 } 2747 case CTL_GETSTATS: { 2748 struct ctl_stats *stats; 2749 struct ctl_lun *lun; 2750 int i; 2751 2752 stats = (struct ctl_stats *)addr; 2753 2754 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2755 stats->alloc_len) { 2756 stats->status = CTL_SS_NEED_MORE_SPACE; 2757 stats->num_luns = softc->num_luns; 2758 break; 2759 } 2760 /* 2761 * XXX KDM no locking here. If the LUN list changes, 2762 * things can blow up. 2763 */ 2764 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2765 i++, lun = STAILQ_NEXT(lun, links)) { 2766 retval = copyout(&lun->stats, &stats->lun_stats[i], 2767 sizeof(lun->stats)); 2768 if (retval != 0) 2769 break; 2770 } 2771 stats->num_luns = softc->num_luns; 2772 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2773 softc->num_luns; 2774 stats->status = CTL_SS_OK; 2775#ifdef CTL_TIME_IO 2776 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2777#else 2778 stats->flags = CTL_STATS_FLAG_NONE; 2779#endif 2780 getnanouptime(&stats->timestamp); 2781 break; 2782 } 2783 case CTL_ERROR_INJECT: { 2784 struct ctl_error_desc *err_desc, *new_err_desc; 2785 struct ctl_lun *lun; 2786 2787 err_desc = (struct ctl_error_desc *)addr; 2788 2789 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2790 M_WAITOK | M_ZERO); 2791 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2792 2793 mtx_lock(&softc->ctl_lock); 2794 lun = softc->ctl_luns[err_desc->lun_id]; 2795 if (lun == NULL) { 2796 mtx_unlock(&softc->ctl_lock); 2797 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2798 __func__, (uintmax_t)err_desc->lun_id); 2799 retval = EINVAL; 2800 break; 2801 } 2802 mtx_lock(&lun->lun_lock); 2803 mtx_unlock(&softc->ctl_lock); 2804 2805 /* 2806 * We could do some checking here to verify the validity 2807 * of the request, but given the complexity of error 2808 * injection requests, the checking logic would be fairly 2809 * complex. 2810 * 2811 * For now, if the request is invalid, it just won't get 2812 * executed and might get deleted. 2813 */ 2814 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2815 2816 /* 2817 * XXX KDM check to make sure the serial number is unique, 2818 * in case we somehow manage to wrap. That shouldn't 2819 * happen for a very long time, but it's the right thing to 2820 * do. 2821 */ 2822 new_err_desc->serial = lun->error_serial; 2823 err_desc->serial = lun->error_serial; 2824 lun->error_serial++; 2825 2826 mtx_unlock(&lun->lun_lock); 2827 break; 2828 } 2829 case CTL_ERROR_INJECT_DELETE: { 2830 struct ctl_error_desc *delete_desc, *desc, *desc2; 2831 struct ctl_lun *lun; 2832 int delete_done; 2833 2834 delete_desc = (struct ctl_error_desc *)addr; 2835 delete_done = 0; 2836 2837 mtx_lock(&softc->ctl_lock); 2838 lun = softc->ctl_luns[delete_desc->lun_id]; 2839 if (lun == NULL) { 2840 mtx_unlock(&softc->ctl_lock); 2841 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2842 __func__, (uintmax_t)delete_desc->lun_id); 2843 retval = EINVAL; 2844 break; 2845 } 2846 mtx_lock(&lun->lun_lock); 2847 mtx_unlock(&softc->ctl_lock); 2848 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2849 if (desc->serial != delete_desc->serial) 2850 continue; 2851 2852 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2853 links); 2854 free(desc, M_CTL); 2855 delete_done = 1; 2856 } 2857 mtx_unlock(&lun->lun_lock); 2858 if (delete_done == 0) { 2859 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2860 "error serial %ju on LUN %u\n", __func__, 2861 delete_desc->serial, delete_desc->lun_id); 2862 retval = EINVAL; 2863 break; 2864 } 2865 break; 2866 } 2867 case CTL_DUMP_STRUCTS: { 2868 int i, j, k; 2869 struct ctl_port *port; 2870 struct ctl_frontend *fe; 2871 2872 printf("CTL IID to WWPN map start:\n"); 2873 for (i = 0; i < CTL_MAX_PORTS; i++) { 2874 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2875 if (softc->wwpn_iid[i][j].in_use == 0) 2876 continue; 2877 2878 printf("port %d iid %u WWPN %#jx\n", 2879 softc->wwpn_iid[i][j].port, 2880 softc->wwpn_iid[i][j].iid, 2881 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2882 } 2883 } 2884 printf("CTL IID to WWPN map end\n"); 2885 printf("CTL Persistent Reservation information start:\n"); 2886 for (i = 0; i < CTL_MAX_LUNS; i++) { 2887 struct ctl_lun *lun; 2888 2889 lun = softc->ctl_luns[i]; 2890 2891 if ((lun == NULL) 2892 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2893 continue; 2894 2895 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2896 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2897 if (lun->per_res[j+k].registered == 0) 2898 continue; 2899 printf("LUN %d port %d iid %d key " 2900 "%#jx\n", i, j, k, 2901 (uintmax_t)scsi_8btou64( 2902 lun->per_res[j+k].res_key.key)); 2903 } 2904 } 2905 } 2906 printf("CTL Persistent Reservation information end\n"); 2907 printf("CTL Ports:\n"); 2908 /* 2909 * XXX KDM calling this without a lock. We'd likely want 2910 * to drop the lock before calling the frontend's dump 2911 * routine anyway. 2912 */ 2913 STAILQ_FOREACH(port, &softc->port_list, links) { 2914 printf("Port %s Frontend %s Type %u pport %d vport %d WWNN " 2915 "%#jx WWPN %#jx\n", port->port_name, 2916 port->frontend->name, port->port_type, 2917 port->physical_port, port->virtual_port, 2918 (uintmax_t)port->wwnn, (uintmax_t)port->wwpn); 2919 } 2920 printf("CTL Port information end\n"); 2921 printf("CTL Frontends:\n"); 2922 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2923 printf("Frontend %s\n", fe->name); 2924 if (fe->fe_dump != NULL) 2925 fe->fe_dump(); 2926 } 2927 printf("CTL Frontend information end\n"); 2928 break; 2929 } 2930 case CTL_LUN_REQ: { 2931 struct ctl_lun_req *lun_req; 2932 struct ctl_backend_driver *backend; 2933 2934 lun_req = (struct ctl_lun_req *)addr; 2935 2936 backend = ctl_backend_find(lun_req->backend); 2937 if (backend == NULL) { 2938 lun_req->status = CTL_LUN_ERROR; 2939 snprintf(lun_req->error_str, 2940 sizeof(lun_req->error_str), 2941 "Backend \"%s\" not found.", 2942 lun_req->backend); 2943 break; 2944 } 2945 if (lun_req->num_be_args > 0) { 2946 lun_req->kern_be_args = ctl_copyin_args( 2947 lun_req->num_be_args, 2948 lun_req->be_args, 2949 lun_req->error_str, 2950 sizeof(lun_req->error_str)); 2951 if (lun_req->kern_be_args == NULL) { 2952 lun_req->status = CTL_LUN_ERROR; 2953 break; 2954 } 2955 } 2956 2957 retval = backend->ioctl(dev, cmd, addr, flag, td); 2958 2959 if (lun_req->num_be_args > 0) { 2960 ctl_copyout_args(lun_req->num_be_args, 2961 lun_req->kern_be_args); 2962 ctl_free_args(lun_req->num_be_args, 2963 lun_req->kern_be_args); 2964 } 2965 break; 2966 } 2967 case CTL_LUN_LIST: { 2968 struct sbuf *sb; 2969 struct ctl_lun *lun; 2970 struct ctl_lun_list *list; 2971 struct ctl_option *opt; 2972 2973 list = (struct ctl_lun_list *)addr; 2974 2975 /* 2976 * Allocate a fixed length sbuf here, based on the length 2977 * of the user's buffer. We could allocate an auto-extending 2978 * buffer, and then tell the user how much larger our 2979 * amount of data is than his buffer, but that presents 2980 * some problems: 2981 * 2982 * 1. The sbuf(9) routines use a blocking malloc, and so 2983 * we can't hold a lock while calling them with an 2984 * auto-extending buffer. 2985 * 2986 * 2. There is not currently a LUN reference counting 2987 * mechanism, outside of outstanding transactions on 2988 * the LUN's OOA queue. So a LUN could go away on us 2989 * while we're getting the LUN number, backend-specific 2990 * information, etc. Thus, given the way things 2991 * currently work, we need to hold the CTL lock while 2992 * grabbing LUN information. 2993 * 2994 * So, from the user's standpoint, the best thing to do is 2995 * allocate what he thinks is a reasonable buffer length, 2996 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 2997 * double the buffer length and try again. (And repeat 2998 * that until he succeeds.) 2999 */ 3000 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3001 if (sb == NULL) { 3002 list->status = CTL_LUN_LIST_ERROR; 3003 snprintf(list->error_str, sizeof(list->error_str), 3004 "Unable to allocate %d bytes for LUN list", 3005 list->alloc_len); 3006 break; 3007 } 3008 3009 sbuf_printf(sb, "<ctllunlist>\n"); 3010 3011 mtx_lock(&softc->ctl_lock); 3012 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3013 mtx_lock(&lun->lun_lock); 3014 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3015 (uintmax_t)lun->lun); 3016 3017 /* 3018 * Bail out as soon as we see that we've overfilled 3019 * the buffer. 3020 */ 3021 if (retval != 0) 3022 break; 3023 3024 retval = sbuf_printf(sb, "\t<backend_type>%s" 3025 "</backend_type>\n", 3026 (lun->backend == NULL) ? "none" : 3027 lun->backend->name); 3028 3029 if (retval != 0) 3030 break; 3031 3032 retval = sbuf_printf(sb, "\t<lun_type>%d</lun_type>\n", 3033 lun->be_lun->lun_type); 3034 3035 if (retval != 0) 3036 break; 3037 3038 if (lun->backend == NULL) { 3039 retval = sbuf_printf(sb, "</lun>\n"); 3040 if (retval != 0) 3041 break; 3042 continue; 3043 } 3044 3045 retval = sbuf_printf(sb, "\t<size>%ju</size>\n", 3046 (lun->be_lun->maxlba > 0) ? 3047 lun->be_lun->maxlba + 1 : 0); 3048 3049 if (retval != 0) 3050 break; 3051 3052 retval = sbuf_printf(sb, "\t<blocksize>%u</blocksize>\n", 3053 lun->be_lun->blocksize); 3054 3055 if (retval != 0) 3056 break; 3057 3058 retval = sbuf_printf(sb, "\t<serial_number>"); 3059 3060 if (retval != 0) 3061 break; 3062 3063 retval = ctl_sbuf_printf_esc(sb, 3064 lun->be_lun->serial_num); 3065 3066 if (retval != 0) 3067 break; 3068 3069 retval = sbuf_printf(sb, "</serial_number>\n"); 3070 3071 if (retval != 0) 3072 break; 3073 3074 retval = sbuf_printf(sb, "\t<device_id>"); 3075 3076 if (retval != 0) 3077 break; 3078 3079 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3080 3081 if (retval != 0) 3082 break; 3083 3084 retval = sbuf_printf(sb, "</device_id>\n"); 3085 3086 if (retval != 0) 3087 break; 3088 3089 if (lun->backend->lun_info != NULL) { 3090 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3091 if (retval != 0) 3092 break; 3093 } 3094 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3095 retval = sbuf_printf(sb, "\t<%s>%s</%s>\n", 3096 opt->name, opt->value, opt->name); 3097 if (retval != 0) 3098 break; 3099 } 3100 3101 retval = sbuf_printf(sb, "</lun>\n"); 3102 3103 if (retval != 0) 3104 break; 3105 mtx_unlock(&lun->lun_lock); 3106 } 3107 if (lun != NULL) 3108 mtx_unlock(&lun->lun_lock); 3109 mtx_unlock(&softc->ctl_lock); 3110 3111 if ((retval != 0) 3112 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3113 retval = 0; 3114 sbuf_delete(sb); 3115 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3116 snprintf(list->error_str, sizeof(list->error_str), 3117 "Out of space, %d bytes is too small", 3118 list->alloc_len); 3119 break; 3120 } 3121 3122 sbuf_finish(sb); 3123 3124 retval = copyout(sbuf_data(sb), list->lun_xml, 3125 sbuf_len(sb) + 1); 3126 3127 list->fill_len = sbuf_len(sb) + 1; 3128 list->status = CTL_LUN_LIST_OK; 3129 sbuf_delete(sb); 3130 break; 3131 } 3132 case CTL_ISCSI: { 3133 struct ctl_iscsi *ci; 3134 struct ctl_frontend *fe; 3135 3136 ci = (struct ctl_iscsi *)addr; 3137 3138 fe = ctl_frontend_find("iscsi"); 3139 if (fe == NULL) { 3140 ci->status = CTL_ISCSI_ERROR; 3141 snprintf(ci->error_str, sizeof(ci->error_str), 3142 "Frontend \"iscsi\" not found."); 3143 break; 3144 } 3145 3146 retval = fe->ioctl(dev, cmd, addr, flag, td); 3147 break; 3148 } 3149 case CTL_PORT_REQ: { 3150 struct ctl_req *req; 3151 struct ctl_frontend *fe; 3152 3153 req = (struct ctl_req *)addr; 3154 3155 fe = ctl_frontend_find(req->driver); 3156 if (fe == NULL) { 3157 req->status = CTL_LUN_ERROR; 3158 snprintf(req->error_str, sizeof(req->error_str), 3159 "Frontend \"%s\" not found.", req->driver); 3160 break; 3161 } 3162 if (req->num_args > 0) { 3163 req->kern_args = ctl_copyin_args(req->num_args, 3164 req->args, req->error_str, sizeof(req->error_str)); 3165 if (req->kern_args == NULL) { 3166 req->status = CTL_LUN_ERROR; 3167 break; 3168 } 3169 } 3170 3171 retval = fe->ioctl(dev, cmd, addr, flag, td); 3172 3173 if (req->num_args > 0) { 3174 ctl_copyout_args(req->num_args, req->kern_args); 3175 ctl_free_args(req->num_args, req->kern_args); 3176 } 3177 break; 3178 } 3179 case CTL_PORT_LIST: { 3180 struct sbuf *sb; 3181 struct ctl_port *port; 3182 struct ctl_lun_list *list; 3183 struct ctl_option *opt; 3184 3185 list = (struct ctl_lun_list *)addr; 3186 3187 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3188 if (sb == NULL) { 3189 list->status = CTL_LUN_LIST_ERROR; 3190 snprintf(list->error_str, sizeof(list->error_str), 3191 "Unable to allocate %d bytes for LUN list", 3192 list->alloc_len); 3193 break; 3194 } 3195 3196 sbuf_printf(sb, "<ctlportlist>\n"); 3197 3198 mtx_lock(&softc->ctl_lock); 3199 STAILQ_FOREACH(port, &softc->port_list, links) { 3200 retval = sbuf_printf(sb, "<targ_port id=\"%ju\">\n", 3201 (uintmax_t)port->targ_port); 3202 3203 /* 3204 * Bail out as soon as we see that we've overfilled 3205 * the buffer. 3206 */ 3207 if (retval != 0) 3208 break; 3209 3210 retval = sbuf_printf(sb, "\t<frontend_type>%s" 3211 "</frontend_type>\n", port->frontend->name); 3212 if (retval != 0) 3213 break; 3214 3215 retval = sbuf_printf(sb, "\t<port_type>%d</port_type>\n", 3216 port->port_type); 3217 if (retval != 0) 3218 break; 3219 3220 retval = sbuf_printf(sb, "\t<online>%s</online>\n", 3221 (port->status & CTL_PORT_STATUS_ONLINE) ? "YES" : "NO"); 3222 if (retval != 0) 3223 break; 3224 3225 retval = sbuf_printf(sb, "\t<port_name>%s</port_name>\n", 3226 port->port_name); 3227 if (retval != 0) 3228 break; 3229 3230 retval = sbuf_printf(sb, "\t<physical_port>%d</physical_port>\n", 3231 port->physical_port); 3232 if (retval != 0) 3233 break; 3234 3235 retval = sbuf_printf(sb, "\t<virtual_port>%d</virtual_port>\n", 3236 port->virtual_port); 3237 if (retval != 0) 3238 break; 3239 3240 retval = sbuf_printf(sb, "\t<wwnn>%#jx</wwnn>\n", 3241 (uintmax_t)port->wwnn); 3242 if (retval != 0) 3243 break; 3244 3245 retval = sbuf_printf(sb, "\t<wwpn>%#jx</wwpn>\n", 3246 (uintmax_t)port->wwpn); 3247 if (retval != 0) 3248 break; 3249 3250 STAILQ_FOREACH(opt, &port->options, links) { 3251 retval = sbuf_printf(sb, "\t<%s>%s</%s>\n", 3252 opt->name, opt->value, opt->name); 3253 if (retval != 0) 3254 break; 3255 } 3256 3257 retval = sbuf_printf(sb, "</targ_port>\n"); 3258 if (retval != 0) 3259 break; 3260 } 3261 mtx_unlock(&softc->ctl_lock); 3262 3263 if ((retval != 0) 3264 || ((retval = sbuf_printf(sb, "</ctlportlist>\n")) != 0)) { 3265 retval = 0; 3266 sbuf_delete(sb); 3267 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3268 snprintf(list->error_str, sizeof(list->error_str), 3269 "Out of space, %d bytes is too small", 3270 list->alloc_len); 3271 break; 3272 } 3273 3274 sbuf_finish(sb); 3275 3276 retval = copyout(sbuf_data(sb), list->lun_xml, 3277 sbuf_len(sb) + 1); 3278 3279 list->fill_len = sbuf_len(sb) + 1; 3280 list->status = CTL_LUN_LIST_OK; 3281 sbuf_delete(sb); 3282 break; 3283 } 3284 default: { 3285 /* XXX KDM should we fix this? */ 3286#if 0 3287 struct ctl_backend_driver *backend; 3288 unsigned int type; 3289 int found; 3290 3291 found = 0; 3292 3293 /* 3294 * We encode the backend type as the ioctl type for backend 3295 * ioctls. So parse it out here, and then search for a 3296 * backend of this type. 3297 */ 3298 type = _IOC_TYPE(cmd); 3299 3300 STAILQ_FOREACH(backend, &softc->be_list, links) { 3301 if (backend->type == type) { 3302 found = 1; 3303 break; 3304 } 3305 } 3306 if (found == 0) { 3307 printf("ctl: unknown ioctl command %#lx or backend " 3308 "%d\n", cmd, type); 3309 retval = EINVAL; 3310 break; 3311 } 3312 retval = backend->ioctl(dev, cmd, addr, flag, td); 3313#endif 3314 retval = ENOTTY; 3315 break; 3316 } 3317 } 3318 return (retval); 3319} 3320 3321uint32_t 3322ctl_get_initindex(struct ctl_nexus *nexus) 3323{ 3324 if (nexus->targ_port < CTL_MAX_PORTS) 3325 return (nexus->initid.id + 3326 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3327 else 3328 return (nexus->initid.id + 3329 ((nexus->targ_port - CTL_MAX_PORTS) * 3330 CTL_MAX_INIT_PER_PORT)); 3331} 3332 3333uint32_t 3334ctl_get_resindex(struct ctl_nexus *nexus) 3335{ 3336 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3337} 3338 3339uint32_t 3340ctl_port_idx(int port_num) 3341{ 3342 if (port_num < CTL_MAX_PORTS) 3343 return(port_num); 3344 else 3345 return(port_num - CTL_MAX_PORTS); 3346} 3347 3348/* 3349 * Note: This only works for bitmask sizes that are at least 32 bits, and 3350 * that are a power of 2. 3351 */ 3352int 3353ctl_ffz(uint32_t *mask, uint32_t size) 3354{ 3355 uint32_t num_chunks, num_pieces; 3356 int i, j; 3357 3358 num_chunks = (size >> 5); 3359 if (num_chunks == 0) 3360 num_chunks++; 3361 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3362 3363 for (i = 0; i < num_chunks; i++) { 3364 for (j = 0; j < num_pieces; j++) { 3365 if ((mask[i] & (1 << j)) == 0) 3366 return ((i << 5) + j); 3367 } 3368 } 3369 3370 return (-1); 3371} 3372 3373int 3374ctl_set_mask(uint32_t *mask, uint32_t bit) 3375{ 3376 uint32_t chunk, piece; 3377 3378 chunk = bit >> 5; 3379 piece = bit % (sizeof(uint32_t) * 8); 3380 3381 if ((mask[chunk] & (1 << piece)) != 0) 3382 return (-1); 3383 else 3384 mask[chunk] |= (1 << piece); 3385 3386 return (0); 3387} 3388 3389int 3390ctl_clear_mask(uint32_t *mask, uint32_t bit) 3391{ 3392 uint32_t chunk, piece; 3393 3394 chunk = bit >> 5; 3395 piece = bit % (sizeof(uint32_t) * 8); 3396 3397 if ((mask[chunk] & (1 << piece)) == 0) 3398 return (-1); 3399 else 3400 mask[chunk] &= ~(1 << piece); 3401 3402 return (0); 3403} 3404 3405int 3406ctl_is_set(uint32_t *mask, uint32_t bit) 3407{ 3408 uint32_t chunk, piece; 3409 3410 chunk = bit >> 5; 3411 piece = bit % (sizeof(uint32_t) * 8); 3412 3413 if ((mask[chunk] & (1 << piece)) == 0) 3414 return (0); 3415 else 3416 return (1); 3417} 3418 3419#ifdef unused 3420/* 3421 * The bus, target and lun are optional, they can be filled in later. 3422 * can_wait is used to determine whether we can wait on the malloc or not. 3423 */ 3424union ctl_io* 3425ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3426 uint32_t targ_lun, int can_wait) 3427{ 3428 union ctl_io *io; 3429 3430 if (can_wait) 3431 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3432 else 3433 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3434 3435 if (io != NULL) { 3436 io->io_hdr.io_type = io_type; 3437 io->io_hdr.targ_port = targ_port; 3438 /* 3439 * XXX KDM this needs to change/go away. We need to move 3440 * to a preallocated pool of ctl_scsiio structures. 3441 */ 3442 io->io_hdr.nexus.targ_target.id = targ_target; 3443 io->io_hdr.nexus.targ_lun = targ_lun; 3444 } 3445 3446 return (io); 3447} 3448 3449void 3450ctl_kfree_io(union ctl_io *io) 3451{ 3452 free(io, M_CTL); 3453} 3454#endif /* unused */ 3455 3456/* 3457 * ctl_softc, pool_type, total_ctl_io are passed in. 3458 * npool is passed out. 3459 */ 3460int 3461ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3462 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3463{ 3464 uint32_t i; 3465 union ctl_io *cur_io, *next_io; 3466 struct ctl_io_pool *pool; 3467 int retval; 3468 3469 retval = 0; 3470 3471 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3472 M_NOWAIT | M_ZERO); 3473 if (pool == NULL) { 3474 retval = ENOMEM; 3475 goto bailout; 3476 } 3477 3478 pool->type = pool_type; 3479 pool->ctl_softc = ctl_softc; 3480 3481 mtx_lock(&ctl_softc->pool_lock); 3482 pool->id = ctl_softc->cur_pool_id++; 3483 mtx_unlock(&ctl_softc->pool_lock); 3484 3485 pool->flags = CTL_POOL_FLAG_NONE; 3486 pool->refcount = 1; /* Reference for validity. */ 3487 STAILQ_INIT(&pool->free_queue); 3488 3489 /* 3490 * XXX KDM other options here: 3491 * - allocate a page at a time 3492 * - allocate one big chunk of memory. 3493 * Page allocation might work well, but would take a little more 3494 * tracking. 3495 */ 3496 for (i = 0; i < total_ctl_io; i++) { 3497 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTLIO, 3498 M_NOWAIT); 3499 if (cur_io == NULL) { 3500 retval = ENOMEM; 3501 break; 3502 } 3503 cur_io->io_hdr.pool = pool; 3504 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3505 pool->total_ctl_io++; 3506 pool->free_ctl_io++; 3507 } 3508 3509 if (retval != 0) { 3510 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3511 cur_io != NULL; cur_io = next_io) { 3512 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3513 links); 3514 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3515 ctl_io_hdr, links); 3516 free(cur_io, M_CTLIO); 3517 } 3518 3519 free(pool, M_CTL); 3520 goto bailout; 3521 } 3522 mtx_lock(&ctl_softc->pool_lock); 3523 ctl_softc->num_pools++; 3524 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3525 /* 3526 * Increment our usage count if this is an external consumer, so we 3527 * can't get unloaded until the external consumer (most likely a 3528 * FETD) unloads and frees his pool. 3529 * 3530 * XXX KDM will this increment the caller's module use count, or 3531 * mine? 3532 */ 3533#if 0 3534 if ((pool_type != CTL_POOL_EMERGENCY) 3535 && (pool_type != CTL_POOL_INTERNAL) 3536 && (pool_type != CTL_POOL_4OTHERSC)) 3537 MOD_INC_USE_COUNT; 3538#endif 3539 3540 mtx_unlock(&ctl_softc->pool_lock); 3541 3542 *npool = pool; 3543 3544bailout: 3545 3546 return (retval); 3547} 3548 3549static int 3550ctl_pool_acquire(struct ctl_io_pool *pool) 3551{ 3552 3553 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3554 3555 if (pool->flags & CTL_POOL_FLAG_INVALID) 3556 return (EINVAL); 3557 3558 pool->refcount++; 3559 3560 return (0); 3561} 3562 3563static void 3564ctl_pool_release(struct ctl_io_pool *pool) 3565{ 3566 struct ctl_softc *ctl_softc = pool->ctl_softc; 3567 union ctl_io *io; 3568 3569 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3570 3571 if (--pool->refcount != 0) 3572 return; 3573 3574 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3575 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3576 links); 3577 free(io, M_CTLIO); 3578 } 3579 3580 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3581 ctl_softc->num_pools--; 3582 3583 /* 3584 * XXX KDM will this decrement the caller's usage count or mine? 3585 */ 3586#if 0 3587 if ((pool->type != CTL_POOL_EMERGENCY) 3588 && (pool->type != CTL_POOL_INTERNAL) 3589 && (pool->type != CTL_POOL_4OTHERSC)) 3590 MOD_DEC_USE_COUNT; 3591#endif 3592 3593 free(pool, M_CTL); 3594} 3595 3596void 3597ctl_pool_free(struct ctl_io_pool *pool) 3598{ 3599 struct ctl_softc *ctl_softc; 3600 3601 if (pool == NULL) 3602 return; 3603 3604 ctl_softc = pool->ctl_softc; 3605 mtx_lock(&ctl_softc->pool_lock); 3606 pool->flags |= CTL_POOL_FLAG_INVALID; 3607 ctl_pool_release(pool); 3608 mtx_unlock(&ctl_softc->pool_lock); 3609} 3610 3611/* 3612 * This routine does not block (except for spinlocks of course). 3613 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3614 * possible. 3615 */ 3616union ctl_io * 3617ctl_alloc_io(void *pool_ref) 3618{ 3619 union ctl_io *io; 3620 struct ctl_softc *ctl_softc; 3621 struct ctl_io_pool *pool, *npool; 3622 struct ctl_io_pool *emergency_pool; 3623 3624 pool = (struct ctl_io_pool *)pool_ref; 3625 3626 if (pool == NULL) { 3627 printf("%s: pool is NULL\n", __func__); 3628 return (NULL); 3629 } 3630 3631 emergency_pool = NULL; 3632 3633 ctl_softc = pool->ctl_softc; 3634 3635 mtx_lock(&ctl_softc->pool_lock); 3636 /* 3637 * First, try to get the io structure from the user's pool. 3638 */ 3639 if (ctl_pool_acquire(pool) == 0) { 3640 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3641 if (io != NULL) { 3642 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3643 pool->total_allocated++; 3644 pool->free_ctl_io--; 3645 mtx_unlock(&ctl_softc->pool_lock); 3646 return (io); 3647 } else 3648 ctl_pool_release(pool); 3649 } 3650 /* 3651 * If he doesn't have any io structures left, search for an 3652 * emergency pool and grab one from there. 3653 */ 3654 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3655 if (npool->type != CTL_POOL_EMERGENCY) 3656 continue; 3657 3658 if (ctl_pool_acquire(npool) != 0) 3659 continue; 3660 3661 emergency_pool = npool; 3662 3663 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3664 if (io != NULL) { 3665 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3666 npool->total_allocated++; 3667 npool->free_ctl_io--; 3668 mtx_unlock(&ctl_softc->pool_lock); 3669 return (io); 3670 } else 3671 ctl_pool_release(npool); 3672 } 3673 3674 /* Drop the spinlock before we malloc */ 3675 mtx_unlock(&ctl_softc->pool_lock); 3676 3677 /* 3678 * The emergency pool (if it exists) didn't have one, so try an 3679 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3680 */ 3681 io = (union ctl_io *)malloc(sizeof(*io), M_CTLIO, M_NOWAIT); 3682 if (io != NULL) { 3683 /* 3684 * If the emergency pool exists but is empty, add this 3685 * ctl_io to its list when it gets freed. 3686 */ 3687 if (emergency_pool != NULL) { 3688 mtx_lock(&ctl_softc->pool_lock); 3689 if (ctl_pool_acquire(emergency_pool) == 0) { 3690 io->io_hdr.pool = emergency_pool; 3691 emergency_pool->total_ctl_io++; 3692 /* 3693 * Need to bump this, otherwise 3694 * total_allocated and total_freed won't 3695 * match when we no longer have anything 3696 * outstanding. 3697 */ 3698 emergency_pool->total_allocated++; 3699 } 3700 mtx_unlock(&ctl_softc->pool_lock); 3701 } else 3702 io->io_hdr.pool = NULL; 3703 } 3704 3705 return (io); 3706} 3707 3708void 3709ctl_free_io(union ctl_io *io) 3710{ 3711 if (io == NULL) 3712 return; 3713 3714 /* 3715 * If this ctl_io has a pool, return it to that pool. 3716 */ 3717 if (io->io_hdr.pool != NULL) { 3718 struct ctl_io_pool *pool; 3719 3720 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3721 mtx_lock(&pool->ctl_softc->pool_lock); 3722 io->io_hdr.io_type = 0xff; 3723 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3724 pool->total_freed++; 3725 pool->free_ctl_io++; 3726 ctl_pool_release(pool); 3727 mtx_unlock(&pool->ctl_softc->pool_lock); 3728 } else { 3729 /* 3730 * Otherwise, just free it. We probably malloced it and 3731 * the emergency pool wasn't available. 3732 */ 3733 free(io, M_CTLIO); 3734 } 3735 3736} 3737 3738void 3739ctl_zero_io(union ctl_io *io) 3740{ 3741 void *pool_ref; 3742 3743 if (io == NULL) 3744 return; 3745 3746 /* 3747 * May need to preserve linked list pointers at some point too. 3748 */ 3749 pool_ref = io->io_hdr.pool; 3750 3751 memset(io, 0, sizeof(*io)); 3752 3753 io->io_hdr.pool = pool_ref; 3754} 3755 3756/* 3757 * This routine is currently used for internal copies of ctl_ios that need 3758 * to persist for some reason after we've already returned status to the 3759 * FETD. (Thus the flag set.) 3760 * 3761 * XXX XXX 3762 * Note that this makes a blind copy of all fields in the ctl_io, except 3763 * for the pool reference. This includes any memory that has been 3764 * allocated! That memory will no longer be valid after done has been 3765 * called, so this would be VERY DANGEROUS for command that actually does 3766 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3767 * start and stop commands, which don't transfer any data, so this is not a 3768 * problem. If it is used for anything else, the caller would also need to 3769 * allocate data buffer space and this routine would need to be modified to 3770 * copy the data buffer(s) as well. 3771 */ 3772void 3773ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3774{ 3775 void *pool_ref; 3776 3777 if ((src == NULL) 3778 || (dest == NULL)) 3779 return; 3780 3781 /* 3782 * May need to preserve linked list pointers at some point too. 3783 */ 3784 pool_ref = dest->io_hdr.pool; 3785 3786 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3787 3788 dest->io_hdr.pool = pool_ref; 3789 /* 3790 * We need to know that this is an internal copy, and doesn't need 3791 * to get passed back to the FETD that allocated it. 3792 */ 3793 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3794} 3795 3796#ifdef NEEDTOPORT 3797static void 3798ctl_update_power_subpage(struct copan_power_subpage *page) 3799{ 3800 int num_luns, num_partitions, config_type; 3801 struct ctl_softc *softc; 3802 cs_BOOL_t aor_present, shelf_50pct_power; 3803 cs_raidset_personality_t rs_type; 3804 int max_active_luns; 3805 3806 softc = control_softc; 3807 3808 /* subtract out the processor LUN */ 3809 num_luns = softc->num_luns - 1; 3810 /* 3811 * Default to 7 LUNs active, which was the only number we allowed 3812 * in the past. 3813 */ 3814 max_active_luns = 7; 3815 3816 num_partitions = config_GetRsPartitionInfo(); 3817 config_type = config_GetConfigType(); 3818 shelf_50pct_power = config_GetShelfPowerMode(); 3819 aor_present = config_IsAorRsPresent(); 3820 3821 rs_type = ddb_GetRsRaidType(1); 3822 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3823 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3824 EPRINT(0, "Unsupported RS type %d!", rs_type); 3825 } 3826 3827 3828 page->total_luns = num_luns; 3829 3830 switch (config_type) { 3831 case 40: 3832 /* 3833 * In a 40 drive configuration, it doesn't matter what DC 3834 * cards we have, whether we have AOR enabled or not, 3835 * partitioning or not, or what type of RAIDset we have. 3836 * In that scenario, we can power up every LUN we present 3837 * to the user. 3838 */ 3839 max_active_luns = num_luns; 3840 3841 break; 3842 case 64: 3843 if (shelf_50pct_power == CS_FALSE) { 3844 /* 25% power */ 3845 if (aor_present == CS_TRUE) { 3846 if (rs_type == 3847 CS_RAIDSET_PERSONALITY_RAID5) { 3848 max_active_luns = 7; 3849 } else if (rs_type == 3850 CS_RAIDSET_PERSONALITY_RAID1){ 3851 max_active_luns = 14; 3852 } else { 3853 /* XXX KDM now what?? */ 3854 } 3855 } else { 3856 if (rs_type == 3857 CS_RAIDSET_PERSONALITY_RAID5) { 3858 max_active_luns = 8; 3859 } else if (rs_type == 3860 CS_RAIDSET_PERSONALITY_RAID1){ 3861 max_active_luns = 16; 3862 } else { 3863 /* XXX KDM now what?? */ 3864 } 3865 } 3866 } else { 3867 /* 50% power */ 3868 /* 3869 * With 50% power in a 64 drive configuration, we 3870 * can power all LUNs we present. 3871 */ 3872 max_active_luns = num_luns; 3873 } 3874 break; 3875 case 112: 3876 if (shelf_50pct_power == CS_FALSE) { 3877 /* 25% power */ 3878 if (aor_present == CS_TRUE) { 3879 if (rs_type == 3880 CS_RAIDSET_PERSONALITY_RAID5) { 3881 max_active_luns = 7; 3882 } else if (rs_type == 3883 CS_RAIDSET_PERSONALITY_RAID1){ 3884 max_active_luns = 14; 3885 } else { 3886 /* XXX KDM now what?? */ 3887 } 3888 } else { 3889 if (rs_type == 3890 CS_RAIDSET_PERSONALITY_RAID5) { 3891 max_active_luns = 8; 3892 } else if (rs_type == 3893 CS_RAIDSET_PERSONALITY_RAID1){ 3894 max_active_luns = 16; 3895 } else { 3896 /* XXX KDM now what?? */ 3897 } 3898 } 3899 } else { 3900 /* 50% power */ 3901 if (aor_present == CS_TRUE) { 3902 if (rs_type == 3903 CS_RAIDSET_PERSONALITY_RAID5) { 3904 max_active_luns = 14; 3905 } else if (rs_type == 3906 CS_RAIDSET_PERSONALITY_RAID1){ 3907 /* 3908 * We're assuming here that disk 3909 * caching is enabled, and so we're 3910 * able to power up half of each 3911 * LUN, and cache all writes. 3912 */ 3913 max_active_luns = num_luns; 3914 } else { 3915 /* XXX KDM now what?? */ 3916 } 3917 } else { 3918 if (rs_type == 3919 CS_RAIDSET_PERSONALITY_RAID5) { 3920 max_active_luns = 15; 3921 } else if (rs_type == 3922 CS_RAIDSET_PERSONALITY_RAID1){ 3923 max_active_luns = 30; 3924 } else { 3925 /* XXX KDM now what?? */ 3926 } 3927 } 3928 } 3929 break; 3930 default: 3931 /* 3932 * In this case, we have an unknown configuration, so we 3933 * just use the default from above. 3934 */ 3935 break; 3936 } 3937 3938 page->max_active_luns = max_active_luns; 3939#if 0 3940 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3941 page->total_luns, page->max_active_luns); 3942#endif 3943} 3944#endif /* NEEDTOPORT */ 3945 3946/* 3947 * This routine could be used in the future to load default and/or saved 3948 * mode page parameters for a particuar lun. 3949 */ 3950static int 3951ctl_init_page_index(struct ctl_lun *lun) 3952{ 3953 int i; 3954 struct ctl_page_index *page_index; 3955 struct ctl_softc *softc; 3956 3957 memcpy(&lun->mode_pages.index, page_index_template, 3958 sizeof(page_index_template)); 3959 3960 softc = lun->ctl_softc; 3961 3962 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3963 3964 page_index = &lun->mode_pages.index[i]; 3965 /* 3966 * If this is a disk-only mode page, there's no point in 3967 * setting it up. For some pages, we have to have some 3968 * basic information about the disk in order to calculate the 3969 * mode page data. 3970 */ 3971 if ((lun->be_lun->lun_type != T_DIRECT) 3972 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3973 continue; 3974 3975 switch (page_index->page_code & SMPH_PC_MASK) { 3976 case SMS_FORMAT_DEVICE_PAGE: { 3977 struct scsi_format_page *format_page; 3978 3979 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3980 panic("subpage is incorrect!"); 3981 3982 /* 3983 * Sectors per track are set above. Bytes per 3984 * sector need to be set here on a per-LUN basis. 3985 */ 3986 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3987 &format_page_default, 3988 sizeof(format_page_default)); 3989 memcpy(&lun->mode_pages.format_page[ 3990 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3991 sizeof(format_page_changeable)); 3992 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3993 &format_page_default, 3994 sizeof(format_page_default)); 3995 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3996 &format_page_default, 3997 sizeof(format_page_default)); 3998 3999 format_page = &lun->mode_pages.format_page[ 4000 CTL_PAGE_CURRENT]; 4001 scsi_ulto2b(lun->be_lun->blocksize, 4002 format_page->bytes_per_sector); 4003 4004 format_page = &lun->mode_pages.format_page[ 4005 CTL_PAGE_DEFAULT]; 4006 scsi_ulto2b(lun->be_lun->blocksize, 4007 format_page->bytes_per_sector); 4008 4009 format_page = &lun->mode_pages.format_page[ 4010 CTL_PAGE_SAVED]; 4011 scsi_ulto2b(lun->be_lun->blocksize, 4012 format_page->bytes_per_sector); 4013 4014 page_index->page_data = 4015 (uint8_t *)lun->mode_pages.format_page; 4016 break; 4017 } 4018 case SMS_RIGID_DISK_PAGE: { 4019 struct scsi_rigid_disk_page *rigid_disk_page; 4020 uint32_t sectors_per_cylinder; 4021 uint64_t cylinders; 4022#ifndef __XSCALE__ 4023 int shift; 4024#endif /* !__XSCALE__ */ 4025 4026 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4027 panic("invalid subpage value %d", 4028 page_index->subpage); 4029 4030 /* 4031 * Rotation rate and sectors per track are set 4032 * above. We calculate the cylinders here based on 4033 * capacity. Due to the number of heads and 4034 * sectors per track we're using, smaller arrays 4035 * may turn out to have 0 cylinders. Linux and 4036 * FreeBSD don't pay attention to these mode pages 4037 * to figure out capacity, but Solaris does. It 4038 * seems to deal with 0 cylinders just fine, and 4039 * works out a fake geometry based on the capacity. 4040 */ 4041 memcpy(&lun->mode_pages.rigid_disk_page[ 4042 CTL_PAGE_CURRENT], &rigid_disk_page_default, 4043 sizeof(rigid_disk_page_default)); 4044 memcpy(&lun->mode_pages.rigid_disk_page[ 4045 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 4046 sizeof(rigid_disk_page_changeable)); 4047 memcpy(&lun->mode_pages.rigid_disk_page[ 4048 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 4049 sizeof(rigid_disk_page_default)); 4050 memcpy(&lun->mode_pages.rigid_disk_page[ 4051 CTL_PAGE_SAVED], &rigid_disk_page_default, 4052 sizeof(rigid_disk_page_default)); 4053 4054 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 4055 CTL_DEFAULT_HEADS; 4056 4057 /* 4058 * The divide method here will be more accurate, 4059 * probably, but results in floating point being 4060 * used in the kernel on i386 (__udivdi3()). On the 4061 * XScale, though, __udivdi3() is implemented in 4062 * software. 4063 * 4064 * The shift method for cylinder calculation is 4065 * accurate if sectors_per_cylinder is a power of 4066 * 2. Otherwise it might be slightly off -- you 4067 * might have a bit of a truncation problem. 4068 */ 4069#ifdef __XSCALE__ 4070 cylinders = (lun->be_lun->maxlba + 1) / 4071 sectors_per_cylinder; 4072#else 4073 for (shift = 31; shift > 0; shift--) { 4074 if (sectors_per_cylinder & (1 << shift)) 4075 break; 4076 } 4077 cylinders = (lun->be_lun->maxlba + 1) >> shift; 4078#endif 4079 4080 /* 4081 * We've basically got 3 bytes, or 24 bits for the 4082 * cylinder size in the mode page. If we're over, 4083 * just round down to 2^24. 4084 */ 4085 if (cylinders > 0xffffff) 4086 cylinders = 0xffffff; 4087 4088 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4089 CTL_PAGE_CURRENT]; 4090 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4091 4092 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4093 CTL_PAGE_DEFAULT]; 4094 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4095 4096 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4097 CTL_PAGE_SAVED]; 4098 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4099 4100 page_index->page_data = 4101 (uint8_t *)lun->mode_pages.rigid_disk_page; 4102 break; 4103 } 4104 case SMS_CACHING_PAGE: { 4105 4106 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4107 panic("invalid subpage value %d", 4108 page_index->subpage); 4109 /* 4110 * Defaults should be okay here, no calculations 4111 * needed. 4112 */ 4113 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 4114 &caching_page_default, 4115 sizeof(caching_page_default)); 4116 memcpy(&lun->mode_pages.caching_page[ 4117 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4118 sizeof(caching_page_changeable)); 4119 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4120 &caching_page_default, 4121 sizeof(caching_page_default)); 4122 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4123 &caching_page_default, 4124 sizeof(caching_page_default)); 4125 page_index->page_data = 4126 (uint8_t *)lun->mode_pages.caching_page; 4127 break; 4128 } 4129 case SMS_CONTROL_MODE_PAGE: { 4130 4131 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4132 panic("invalid subpage value %d", 4133 page_index->subpage); 4134 4135 /* 4136 * Defaults should be okay here, no calculations 4137 * needed. 4138 */ 4139 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4140 &control_page_default, 4141 sizeof(control_page_default)); 4142 memcpy(&lun->mode_pages.control_page[ 4143 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4144 sizeof(control_page_changeable)); 4145 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4146 &control_page_default, 4147 sizeof(control_page_default)); 4148 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4149 &control_page_default, 4150 sizeof(control_page_default)); 4151 page_index->page_data = 4152 (uint8_t *)lun->mode_pages.control_page; 4153 break; 4154 4155 } 4156 case SMS_VENDOR_SPECIFIC_PAGE:{ 4157 switch (page_index->subpage) { 4158 case PWR_SUBPAGE_CODE: { 4159 struct copan_power_subpage *current_page, 4160 *saved_page; 4161 4162 memcpy(&lun->mode_pages.power_subpage[ 4163 CTL_PAGE_CURRENT], 4164 &power_page_default, 4165 sizeof(power_page_default)); 4166 memcpy(&lun->mode_pages.power_subpage[ 4167 CTL_PAGE_CHANGEABLE], 4168 &power_page_changeable, 4169 sizeof(power_page_changeable)); 4170 memcpy(&lun->mode_pages.power_subpage[ 4171 CTL_PAGE_DEFAULT], 4172 &power_page_default, 4173 sizeof(power_page_default)); 4174 memcpy(&lun->mode_pages.power_subpage[ 4175 CTL_PAGE_SAVED], 4176 &power_page_default, 4177 sizeof(power_page_default)); 4178 page_index->page_data = 4179 (uint8_t *)lun->mode_pages.power_subpage; 4180 4181 current_page = (struct copan_power_subpage *) 4182 (page_index->page_data + 4183 (page_index->page_len * 4184 CTL_PAGE_CURRENT)); 4185 saved_page = (struct copan_power_subpage *) 4186 (page_index->page_data + 4187 (page_index->page_len * 4188 CTL_PAGE_SAVED)); 4189 break; 4190 } 4191 case APS_SUBPAGE_CODE: { 4192 struct copan_aps_subpage *current_page, 4193 *saved_page; 4194 4195 // This gets set multiple times but 4196 // it should always be the same. It's 4197 // only done during init so who cares. 4198 index_to_aps_page = i; 4199 4200 memcpy(&lun->mode_pages.aps_subpage[ 4201 CTL_PAGE_CURRENT], 4202 &aps_page_default, 4203 sizeof(aps_page_default)); 4204 memcpy(&lun->mode_pages.aps_subpage[ 4205 CTL_PAGE_CHANGEABLE], 4206 &aps_page_changeable, 4207 sizeof(aps_page_changeable)); 4208 memcpy(&lun->mode_pages.aps_subpage[ 4209 CTL_PAGE_DEFAULT], 4210 &aps_page_default, 4211 sizeof(aps_page_default)); 4212 memcpy(&lun->mode_pages.aps_subpage[ 4213 CTL_PAGE_SAVED], 4214 &aps_page_default, 4215 sizeof(aps_page_default)); 4216 page_index->page_data = 4217 (uint8_t *)lun->mode_pages.aps_subpage; 4218 4219 current_page = (struct copan_aps_subpage *) 4220 (page_index->page_data + 4221 (page_index->page_len * 4222 CTL_PAGE_CURRENT)); 4223 saved_page = (struct copan_aps_subpage *) 4224 (page_index->page_data + 4225 (page_index->page_len * 4226 CTL_PAGE_SAVED)); 4227 break; 4228 } 4229 case DBGCNF_SUBPAGE_CODE: { 4230 struct copan_debugconf_subpage *current_page, 4231 *saved_page; 4232 4233 memcpy(&lun->mode_pages.debugconf_subpage[ 4234 CTL_PAGE_CURRENT], 4235 &debugconf_page_default, 4236 sizeof(debugconf_page_default)); 4237 memcpy(&lun->mode_pages.debugconf_subpage[ 4238 CTL_PAGE_CHANGEABLE], 4239 &debugconf_page_changeable, 4240 sizeof(debugconf_page_changeable)); 4241 memcpy(&lun->mode_pages.debugconf_subpage[ 4242 CTL_PAGE_DEFAULT], 4243 &debugconf_page_default, 4244 sizeof(debugconf_page_default)); 4245 memcpy(&lun->mode_pages.debugconf_subpage[ 4246 CTL_PAGE_SAVED], 4247 &debugconf_page_default, 4248 sizeof(debugconf_page_default)); 4249 page_index->page_data = 4250 (uint8_t *)lun->mode_pages.debugconf_subpage; 4251 4252 current_page = (struct copan_debugconf_subpage *) 4253 (page_index->page_data + 4254 (page_index->page_len * 4255 CTL_PAGE_CURRENT)); 4256 saved_page = (struct copan_debugconf_subpage *) 4257 (page_index->page_data + 4258 (page_index->page_len * 4259 CTL_PAGE_SAVED)); 4260 break; 4261 } 4262 default: 4263 panic("invalid subpage value %d", 4264 page_index->subpage); 4265 break; 4266 } 4267 break; 4268 } 4269 default: 4270 panic("invalid page value %d", 4271 page_index->page_code & SMPH_PC_MASK); 4272 break; 4273 } 4274 } 4275 4276 return (CTL_RETVAL_COMPLETE); 4277} 4278 4279/* 4280 * LUN allocation. 4281 * 4282 * Requirements: 4283 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4284 * wants us to allocate the LUN and he can block. 4285 * - ctl_softc is always set 4286 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4287 * 4288 * Returns 0 for success, non-zero (errno) for failure. 4289 */ 4290static int 4291ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4292 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4293{ 4294 struct ctl_lun *nlun, *lun; 4295 struct ctl_port *port; 4296 struct scsi_vpd_id_descriptor *desc; 4297 struct scsi_vpd_id_t10 *t10id; 4298 const char *scsiname, *vendor; 4299 int lun_number, i, lun_malloced; 4300 int devidlen, idlen1, idlen2, len; 4301 4302 if (be_lun == NULL) 4303 return (EINVAL); 4304 4305 /* 4306 * We currently only support Direct Access or Processor LUN types. 4307 */ 4308 switch (be_lun->lun_type) { 4309 case T_DIRECT: 4310 break; 4311 case T_PROCESSOR: 4312 break; 4313 case T_SEQUENTIAL: 4314 case T_CHANGER: 4315 default: 4316 be_lun->lun_config_status(be_lun->be_lun, 4317 CTL_LUN_CONFIG_FAILURE); 4318 break; 4319 } 4320 if (ctl_lun == NULL) { 4321 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4322 lun_malloced = 1; 4323 } else { 4324 lun_malloced = 0; 4325 lun = ctl_lun; 4326 } 4327 4328 memset(lun, 0, sizeof(*lun)); 4329 if (lun_malloced) 4330 lun->flags = CTL_LUN_MALLOCED; 4331 4332 /* Generate LUN ID. */ 4333 devidlen = max(CTL_DEVID_MIN_LEN, 4334 strnlen(be_lun->device_id, CTL_DEVID_LEN)); 4335 idlen1 = sizeof(*t10id) + devidlen; 4336 len = sizeof(struct scsi_vpd_id_descriptor) + idlen1; 4337 scsiname = ctl_get_opt(&be_lun->options, "scsiname"); 4338 if (scsiname != NULL) { 4339 idlen2 = roundup2(strlen(scsiname) + 1, 4); 4340 len += sizeof(struct scsi_vpd_id_descriptor) + idlen2; 4341 } 4342 lun->lun_devid = malloc(sizeof(struct ctl_devid) + len, 4343 M_CTL, M_WAITOK | M_ZERO); 4344 lun->lun_devid->len = len; 4345 desc = (struct scsi_vpd_id_descriptor *)lun->lun_devid->data; 4346 desc->proto_codeset = SVPD_ID_CODESET_ASCII; 4347 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 4348 desc->length = idlen1; 4349 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 4350 memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 4351 if ((vendor = ctl_get_opt(&be_lun->options, "vendor")) == NULL) { 4352 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 4353 } else { 4354 strncpy(t10id->vendor, vendor, 4355 min(sizeof(t10id->vendor), strlen(vendor))); 4356 } 4357 strncpy((char *)t10id->vendor_spec_id, 4358 (char *)be_lun->device_id, devidlen); 4359 if (scsiname != NULL) { 4360 desc = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 4361 desc->length); 4362 desc->proto_codeset = SVPD_ID_CODESET_UTF8; 4363 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | 4364 SVPD_ID_TYPE_SCSI_NAME; 4365 desc->length = idlen2; 4366 strlcpy(desc->identifier, scsiname, idlen2); 4367 } 4368 4369 mtx_lock(&ctl_softc->ctl_lock); 4370 /* 4371 * See if the caller requested a particular LUN number. If so, see 4372 * if it is available. Otherwise, allocate the first available LUN. 4373 */ 4374 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4375 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4376 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4377 mtx_unlock(&ctl_softc->ctl_lock); 4378 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4379 printf("ctl: requested LUN ID %d is higher " 4380 "than CTL_MAX_LUNS - 1 (%d)\n", 4381 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4382 } else { 4383 /* 4384 * XXX KDM return an error, or just assign 4385 * another LUN ID in this case?? 4386 */ 4387 printf("ctl: requested LUN ID %d is already " 4388 "in use\n", be_lun->req_lun_id); 4389 } 4390 if (lun->flags & CTL_LUN_MALLOCED) 4391 free(lun, M_CTL); 4392 be_lun->lun_config_status(be_lun->be_lun, 4393 CTL_LUN_CONFIG_FAILURE); 4394 return (ENOSPC); 4395 } 4396 lun_number = be_lun->req_lun_id; 4397 } else { 4398 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4399 if (lun_number == -1) { 4400 mtx_unlock(&ctl_softc->ctl_lock); 4401 printf("ctl: can't allocate LUN on target %ju, out of " 4402 "LUNs\n", (uintmax_t)target_id.id); 4403 if (lun->flags & CTL_LUN_MALLOCED) 4404 free(lun, M_CTL); 4405 be_lun->lun_config_status(be_lun->be_lun, 4406 CTL_LUN_CONFIG_FAILURE); 4407 return (ENOSPC); 4408 } 4409 } 4410 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4411 4412 mtx_init(&lun->lun_lock, "CTL LUN", NULL, MTX_DEF); 4413 lun->target = target_id; 4414 lun->lun = lun_number; 4415 lun->be_lun = be_lun; 4416 /* 4417 * The processor LUN is always enabled. Disk LUNs come on line 4418 * disabled, and must be enabled by the backend. 4419 */ 4420 lun->flags |= CTL_LUN_DISABLED; 4421 lun->backend = be_lun->be; 4422 be_lun->ctl_lun = lun; 4423 be_lun->lun_id = lun_number; 4424 atomic_add_int(&be_lun->be->num_luns, 1); 4425 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4426 lun->flags |= CTL_LUN_STOPPED; 4427 4428 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4429 lun->flags |= CTL_LUN_INOPERABLE; 4430 4431 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4432 lun->flags |= CTL_LUN_PRIMARY_SC; 4433 4434 lun->ctl_softc = ctl_softc; 4435 TAILQ_INIT(&lun->ooa_queue); 4436 TAILQ_INIT(&lun->blocked_queue); 4437 STAILQ_INIT(&lun->error_list); 4438 4439 /* 4440 * Initialize the mode page index. 4441 */ 4442 ctl_init_page_index(lun); 4443 4444 /* 4445 * Set the poweron UA for all initiators on this LUN only. 4446 */ 4447 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4448 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4449 4450 /* 4451 * Now, before we insert this lun on the lun list, set the lun 4452 * inventory changed UA for all other luns. 4453 */ 4454 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4455 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4456 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4457 } 4458 } 4459 4460 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4461 4462 ctl_softc->ctl_luns[lun_number] = lun; 4463 4464 ctl_softc->num_luns++; 4465 4466 /* Setup statistics gathering */ 4467 lun->stats.device_type = be_lun->lun_type; 4468 lun->stats.lun_number = lun_number; 4469 if (lun->stats.device_type == T_DIRECT) 4470 lun->stats.blocksize = be_lun->blocksize; 4471 else 4472 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4473 for (i = 0;i < CTL_MAX_PORTS;i++) 4474 lun->stats.ports[i].targ_port = i; 4475 4476 mtx_unlock(&ctl_softc->ctl_lock); 4477 4478 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4479 4480 /* 4481 * Run through each registered FETD and bring it online if it isn't 4482 * already. Enable the target ID if it hasn't been enabled, and 4483 * enable this particular LUN. 4484 */ 4485 STAILQ_FOREACH(port, &ctl_softc->port_list, links) { 4486 int retval; 4487 4488 retval = port->lun_enable(port->targ_lun_arg, target_id,lun_number); 4489 if (retval != 0) { 4490 printf("ctl_alloc_lun: FETD %s port %d returned error " 4491 "%d for lun_enable on target %ju lun %d\n", 4492 port->port_name, port->targ_port, retval, 4493 (uintmax_t)target_id.id, lun_number); 4494 } else 4495 port->status |= CTL_PORT_STATUS_LUN_ONLINE; 4496 } 4497 return (0); 4498} 4499 4500/* 4501 * Delete a LUN. 4502 * Assumptions: 4503 * - LUN has already been marked invalid and any pending I/O has been taken 4504 * care of. 4505 */ 4506static int 4507ctl_free_lun(struct ctl_lun *lun) 4508{ 4509 struct ctl_softc *softc; 4510#if 0 4511 struct ctl_port *port; 4512#endif 4513 struct ctl_lun *nlun; 4514 int i; 4515 4516 softc = lun->ctl_softc; 4517 4518 mtx_assert(&softc->ctl_lock, MA_OWNED); 4519 4520 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4521 4522 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4523 4524 softc->ctl_luns[lun->lun] = NULL; 4525 4526 if (!TAILQ_EMPTY(&lun->ooa_queue)) 4527 panic("Freeing a LUN %p with outstanding I/O!!\n", lun); 4528 4529 softc->num_luns--; 4530 4531 /* 4532 * XXX KDM this scheme only works for a single target/multiple LUN 4533 * setup. It needs to be revamped for a multiple target scheme. 4534 * 4535 * XXX KDM this results in port->lun_disable() getting called twice, 4536 * once when ctl_disable_lun() is called, and a second time here. 4537 * We really need to re-think the LUN disable semantics. There 4538 * should probably be several steps/levels to LUN removal: 4539 * - disable 4540 * - invalidate 4541 * - free 4542 * 4543 * Right now we only have a disable method when communicating to 4544 * the front end ports, at least for individual LUNs. 4545 */ 4546#if 0 4547 STAILQ_FOREACH(port, &softc->port_list, links) { 4548 int retval; 4549 4550 retval = port->lun_disable(port->targ_lun_arg, lun->target, 4551 lun->lun); 4552 if (retval != 0) { 4553 printf("ctl_free_lun: FETD %s port %d returned error " 4554 "%d for lun_disable on target %ju lun %jd\n", 4555 port->port_name, port->targ_port, retval, 4556 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4557 } 4558 4559 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4560 port->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4561 4562 retval = port->targ_disable(port->targ_lun_arg,lun->target); 4563 if (retval != 0) { 4564 printf("ctl_free_lun: FETD %s port %d " 4565 "returned error %d for targ_disable on " 4566 "target %ju\n", port->port_name, 4567 port->targ_port, retval, 4568 (uintmax_t)lun->target.id); 4569 } else 4570 port->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4571 4572 if ((port->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4573 continue; 4574 4575#if 0 4576 port->port_offline(port->onoff_arg); 4577 port->status &= ~CTL_PORT_STATUS_ONLINE; 4578#endif 4579 } 4580 } 4581#endif 4582 4583 /* 4584 * Tell the backend to free resources, if this LUN has a backend. 4585 */ 4586 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4587 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4588 4589 mtx_destroy(&lun->lun_lock); 4590 free(lun->lun_devid, M_CTL); 4591 if (lun->flags & CTL_LUN_MALLOCED) 4592 free(lun, M_CTL); 4593 4594 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4595 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4596 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4597 } 4598 } 4599 4600 return (0); 4601} 4602 4603static void 4604ctl_create_lun(struct ctl_be_lun *be_lun) 4605{ 4606 struct ctl_softc *ctl_softc; 4607 4608 ctl_softc = control_softc; 4609 4610 /* 4611 * ctl_alloc_lun() should handle all potential failure cases. 4612 */ 4613 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4614} 4615 4616int 4617ctl_add_lun(struct ctl_be_lun *be_lun) 4618{ 4619 struct ctl_softc *ctl_softc = control_softc; 4620 4621 mtx_lock(&ctl_softc->ctl_lock); 4622 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4623 mtx_unlock(&ctl_softc->ctl_lock); 4624 wakeup(&ctl_softc->pending_lun_queue); 4625 4626 return (0); 4627} 4628 4629int 4630ctl_enable_lun(struct ctl_be_lun *be_lun) 4631{ 4632 struct ctl_softc *ctl_softc; 4633 struct ctl_port *port, *nport; 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 mtx_lock(&lun->lun_lock); 4643 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4644 /* 4645 * eh? Why did we get called if the LUN is already 4646 * enabled? 4647 */ 4648 mtx_unlock(&lun->lun_lock); 4649 mtx_unlock(&ctl_softc->ctl_lock); 4650 return (0); 4651 } 4652 lun->flags &= ~CTL_LUN_DISABLED; 4653 mtx_unlock(&lun->lun_lock); 4654 4655 for (port = STAILQ_FIRST(&ctl_softc->port_list); port != NULL; port = nport) { 4656 nport = STAILQ_NEXT(port, links); 4657 4658 /* 4659 * Drop the lock while we call the FETD's enable routine. 4660 * This can lead to a callback into CTL (at least in the 4661 * case of the internal initiator frontend. 4662 */ 4663 mtx_unlock(&ctl_softc->ctl_lock); 4664 retval = port->lun_enable(port->targ_lun_arg, lun->target,lun->lun); 4665 mtx_lock(&ctl_softc->ctl_lock); 4666 if (retval != 0) { 4667 printf("%s: FETD %s port %d returned error " 4668 "%d for lun_enable on target %ju lun %jd\n", 4669 __func__, port->port_name, port->targ_port, retval, 4670 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4671 } 4672#if 0 4673 else { 4674 /* NOTE: TODO: why does lun enable affect port status? */ 4675 port->status |= CTL_PORT_STATUS_LUN_ONLINE; 4676 } 4677#endif 4678 } 4679 4680 mtx_unlock(&ctl_softc->ctl_lock); 4681 4682 return (0); 4683} 4684 4685int 4686ctl_disable_lun(struct ctl_be_lun *be_lun) 4687{ 4688 struct ctl_softc *ctl_softc; 4689 struct ctl_port *port; 4690 struct ctl_lun *lun; 4691 int retval; 4692 4693 ctl_softc = control_softc; 4694 4695 lun = (struct ctl_lun *)be_lun->ctl_lun; 4696 4697 mtx_lock(&ctl_softc->ctl_lock); 4698 mtx_lock(&lun->lun_lock); 4699 if (lun->flags & CTL_LUN_DISABLED) { 4700 mtx_unlock(&lun->lun_lock); 4701 mtx_unlock(&ctl_softc->ctl_lock); 4702 return (0); 4703 } 4704 lun->flags |= CTL_LUN_DISABLED; 4705 mtx_unlock(&lun->lun_lock); 4706 4707 STAILQ_FOREACH(port, &ctl_softc->port_list, links) { 4708 mtx_unlock(&ctl_softc->ctl_lock); 4709 /* 4710 * Drop the lock before we call the frontend's disable 4711 * routine, to avoid lock order reversals. 4712 * 4713 * XXX KDM what happens if the frontend list changes while 4714 * we're traversing it? It's unlikely, but should be handled. 4715 */ 4716 retval = port->lun_disable(port->targ_lun_arg, lun->target, 4717 lun->lun); 4718 mtx_lock(&ctl_softc->ctl_lock); 4719 if (retval != 0) { 4720 printf("ctl_alloc_lun: FETD %s port %d returned error " 4721 "%d for lun_disable on target %ju lun %jd\n", 4722 port->port_name, port->targ_port, retval, 4723 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4724 } 4725 } 4726 4727 mtx_unlock(&ctl_softc->ctl_lock); 4728 4729 return (0); 4730} 4731 4732int 4733ctl_start_lun(struct ctl_be_lun *be_lun) 4734{ 4735 struct ctl_softc *ctl_softc; 4736 struct ctl_lun *lun; 4737 4738 ctl_softc = control_softc; 4739 4740 lun = (struct ctl_lun *)be_lun->ctl_lun; 4741 4742 mtx_lock(&lun->lun_lock); 4743 lun->flags &= ~CTL_LUN_STOPPED; 4744 mtx_unlock(&lun->lun_lock); 4745 4746 return (0); 4747} 4748 4749int 4750ctl_stop_lun(struct ctl_be_lun *be_lun) 4751{ 4752 struct ctl_softc *ctl_softc; 4753 struct ctl_lun *lun; 4754 4755 ctl_softc = control_softc; 4756 4757 lun = (struct ctl_lun *)be_lun->ctl_lun; 4758 4759 mtx_lock(&lun->lun_lock); 4760 lun->flags |= CTL_LUN_STOPPED; 4761 mtx_unlock(&lun->lun_lock); 4762 4763 return (0); 4764} 4765 4766int 4767ctl_lun_offline(struct ctl_be_lun *be_lun) 4768{ 4769 struct ctl_softc *ctl_softc; 4770 struct ctl_lun *lun; 4771 4772 ctl_softc = control_softc; 4773 4774 lun = (struct ctl_lun *)be_lun->ctl_lun; 4775 4776 mtx_lock(&lun->lun_lock); 4777 lun->flags |= CTL_LUN_OFFLINE; 4778 mtx_unlock(&lun->lun_lock); 4779 4780 return (0); 4781} 4782 4783int 4784ctl_lun_online(struct ctl_be_lun *be_lun) 4785{ 4786 struct ctl_softc *ctl_softc; 4787 struct ctl_lun *lun; 4788 4789 ctl_softc = control_softc; 4790 4791 lun = (struct ctl_lun *)be_lun->ctl_lun; 4792 4793 mtx_lock(&lun->lun_lock); 4794 lun->flags &= ~CTL_LUN_OFFLINE; 4795 mtx_unlock(&lun->lun_lock); 4796 4797 return (0); 4798} 4799 4800int 4801ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4802{ 4803 struct ctl_softc *ctl_softc; 4804 struct ctl_lun *lun; 4805 4806 ctl_softc = control_softc; 4807 4808 lun = (struct ctl_lun *)be_lun->ctl_lun; 4809 4810 mtx_lock(&lun->lun_lock); 4811 4812 /* 4813 * The LUN needs to be disabled before it can be marked invalid. 4814 */ 4815 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4816 mtx_unlock(&lun->lun_lock); 4817 return (-1); 4818 } 4819 /* 4820 * Mark the LUN invalid. 4821 */ 4822 lun->flags |= CTL_LUN_INVALID; 4823 4824 /* 4825 * If there is nothing in the OOA queue, go ahead and free the LUN. 4826 * If we have something in the OOA queue, we'll free it when the 4827 * last I/O completes. 4828 */ 4829 if (TAILQ_EMPTY(&lun->ooa_queue)) { 4830 mtx_unlock(&lun->lun_lock); 4831 mtx_lock(&ctl_softc->ctl_lock); 4832 ctl_free_lun(lun); 4833 mtx_unlock(&ctl_softc->ctl_lock); 4834 } else 4835 mtx_unlock(&lun->lun_lock); 4836 4837 return (0); 4838} 4839 4840int 4841ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4842{ 4843 struct ctl_softc *ctl_softc; 4844 struct ctl_lun *lun; 4845 4846 ctl_softc = control_softc; 4847 lun = (struct ctl_lun *)be_lun->ctl_lun; 4848 4849 mtx_lock(&lun->lun_lock); 4850 lun->flags |= CTL_LUN_INOPERABLE; 4851 mtx_unlock(&lun->lun_lock); 4852 4853 return (0); 4854} 4855 4856int 4857ctl_lun_operable(struct ctl_be_lun *be_lun) 4858{ 4859 struct ctl_softc *ctl_softc; 4860 struct ctl_lun *lun; 4861 4862 ctl_softc = control_softc; 4863 lun = (struct ctl_lun *)be_lun->ctl_lun; 4864 4865 mtx_lock(&lun->lun_lock); 4866 lun->flags &= ~CTL_LUN_INOPERABLE; 4867 mtx_unlock(&lun->lun_lock); 4868 4869 return (0); 4870} 4871 4872int 4873ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4874 int lock) 4875{ 4876 struct ctl_softc *softc; 4877 struct ctl_lun *lun; 4878 struct copan_aps_subpage *current_sp; 4879 struct ctl_page_index *page_index; 4880 int i; 4881 4882 softc = control_softc; 4883 4884 mtx_lock(&softc->ctl_lock); 4885 4886 lun = (struct ctl_lun *)be_lun->ctl_lun; 4887 mtx_lock(&lun->lun_lock); 4888 4889 page_index = NULL; 4890 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4891 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4892 APS_PAGE_CODE) 4893 continue; 4894 4895 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4896 continue; 4897 page_index = &lun->mode_pages.index[i]; 4898 } 4899 4900 if (page_index == NULL) { 4901 mtx_unlock(&lun->lun_lock); 4902 mtx_unlock(&softc->ctl_lock); 4903 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4904 (uintmax_t)lun->lun); 4905 return (1); 4906 } 4907#if 0 4908 if ((softc->aps_locked_lun != 0) 4909 && (softc->aps_locked_lun != lun->lun)) { 4910 printf("%s: attempt to lock LUN %llu when %llu is already " 4911 "locked\n"); 4912 mtx_unlock(&lun->lun_lock); 4913 mtx_unlock(&softc->ctl_lock); 4914 return (1); 4915 } 4916#endif 4917 4918 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4919 (page_index->page_len * CTL_PAGE_CURRENT)); 4920 4921 if (lock != 0) { 4922 current_sp->lock_active = APS_LOCK_ACTIVE; 4923 softc->aps_locked_lun = lun->lun; 4924 } else { 4925 current_sp->lock_active = 0; 4926 softc->aps_locked_lun = 0; 4927 } 4928 4929 4930 /* 4931 * If we're in HA mode, try to send the lock message to the other 4932 * side. 4933 */ 4934 if (ctl_is_single == 0) { 4935 int isc_retval; 4936 union ctl_ha_msg lock_msg; 4937 4938 lock_msg.hdr.nexus = *nexus; 4939 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4940 if (lock != 0) 4941 lock_msg.aps.lock_flag = 1; 4942 else 4943 lock_msg.aps.lock_flag = 0; 4944 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4945 sizeof(lock_msg), 0); 4946 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4947 printf("%s: APS (lock=%d) error returned from " 4948 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4949 mtx_unlock(&lun->lun_lock); 4950 mtx_unlock(&softc->ctl_lock); 4951 return (1); 4952 } 4953 } 4954 4955 mtx_unlock(&lun->lun_lock); 4956 mtx_unlock(&softc->ctl_lock); 4957 4958 return (0); 4959} 4960 4961void 4962ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4963{ 4964 struct ctl_lun *lun; 4965 struct ctl_softc *softc; 4966 int i; 4967 4968 softc = control_softc; 4969 4970 lun = (struct ctl_lun *)be_lun->ctl_lun; 4971 4972 mtx_lock(&lun->lun_lock); 4973 4974 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4975 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4976 4977 mtx_unlock(&lun->lun_lock); 4978} 4979 4980/* 4981 * Backend "memory move is complete" callback for requests that never 4982 * make it down to say RAIDCore's configuration code. 4983 */ 4984int 4985ctl_config_move_done(union ctl_io *io) 4986{ 4987 int retval; 4988 4989 retval = CTL_RETVAL_COMPLETE; 4990 4991 4992 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4993 /* 4994 * XXX KDM this shouldn't happen, but what if it does? 4995 */ 4996 if (io->io_hdr.io_type != CTL_IO_SCSI) 4997 panic("I/O type isn't CTL_IO_SCSI!"); 4998 4999 if ((io->io_hdr.port_status == 0) 5000 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 5001 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 5002 io->io_hdr.status = CTL_SUCCESS; 5003 else if ((io->io_hdr.port_status != 0) 5004 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 5005 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 5006 /* 5007 * For hardware error sense keys, the sense key 5008 * specific value is defined to be a retry count, 5009 * but we use it to pass back an internal FETD 5010 * error code. XXX KDM Hopefully the FETD is only 5011 * using 16 bits for an error code, since that's 5012 * all the space we have in the sks field. 5013 */ 5014 ctl_set_internal_failure(&io->scsiio, 5015 /*sks_valid*/ 1, 5016 /*retry_count*/ 5017 io->io_hdr.port_status); 5018 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 5019 free(io->scsiio.kern_data_ptr, M_CTL); 5020 ctl_done(io); 5021 goto bailout; 5022 } 5023 5024 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 5025 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 5026 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 5027 /* 5028 * XXX KDM just assuming a single pointer here, and not a 5029 * S/G list. If we start using S/G lists for config data, 5030 * we'll need to know how to clean them up here as well. 5031 */ 5032 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 5033 free(io->scsiio.kern_data_ptr, M_CTL); 5034 /* Hopefully the user has already set the status... */ 5035 ctl_done(io); 5036 } else { 5037 /* 5038 * XXX KDM now we need to continue data movement. Some 5039 * options: 5040 * - call ctl_scsiio() again? We don't do this for data 5041 * writes, because for those at least we know ahead of 5042 * time where the write will go and how long it is. For 5043 * config writes, though, that information is largely 5044 * contained within the write itself, thus we need to 5045 * parse out the data again. 5046 * 5047 * - Call some other function once the data is in? 5048 */ 5049 5050 /* 5051 * XXX KDM call ctl_scsiio() again for now, and check flag 5052 * bits to see whether we're allocated or not. 5053 */ 5054 retval = ctl_scsiio(&io->scsiio); 5055 } 5056bailout: 5057 return (retval); 5058} 5059 5060/* 5061 * This gets called by a backend driver when it is done with a 5062 * data_submit method. 5063 */ 5064void 5065ctl_data_submit_done(union ctl_io *io) 5066{ 5067 /* 5068 * If the IO_CONT flag is set, we need to call the supplied 5069 * function to continue processing the I/O, instead of completing 5070 * the I/O just yet. 5071 * 5072 * If there is an error, though, we don't want to keep processing. 5073 * Instead, just send status back to the initiator. 5074 */ 5075 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) && 5076 (io->io_hdr.flags & CTL_FLAG_ABORT) == 0 && 5077 ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 5078 (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 5079 io->scsiio.io_cont(io); 5080 return; 5081 } 5082 ctl_done(io); 5083} 5084 5085/* 5086 * This gets called by a backend driver when it is done with a 5087 * configuration write. 5088 */ 5089void 5090ctl_config_write_done(union ctl_io *io) 5091{ 5092 /* 5093 * If the IO_CONT flag is set, we need to call the supplied 5094 * function to continue processing the I/O, instead of completing 5095 * the I/O just yet. 5096 * 5097 * If there is an error, though, we don't want to keep processing. 5098 * Instead, just send status back to the initiator. 5099 */ 5100 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5101 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5102 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5103 io->scsiio.io_cont(io); 5104 return; 5105 } 5106 /* 5107 * Since a configuration write can be done for commands that actually 5108 * have data allocated, like write buffer, and commands that have 5109 * no data, like start/stop unit, we need to check here. 5110 */ 5111 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5112 free(io->scsiio.kern_data_ptr, M_CTL); 5113 ctl_done(io); 5114} 5115 5116/* 5117 * SCSI release command. 5118 */ 5119int 5120ctl_scsi_release(struct ctl_scsiio *ctsio) 5121{ 5122 int length, longid, thirdparty_id, resv_id; 5123 struct ctl_softc *ctl_softc; 5124 struct ctl_lun *lun; 5125 5126 length = 0; 5127 resv_id = 0; 5128 5129 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5130 5131 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5132 ctl_softc = control_softc; 5133 5134 switch (ctsio->cdb[0]) { 5135 case RELEASE_10: { 5136 struct scsi_release_10 *cdb; 5137 5138 cdb = (struct scsi_release_10 *)ctsio->cdb; 5139 5140 if (cdb->byte2 & SR10_LONGID) 5141 longid = 1; 5142 else 5143 thirdparty_id = cdb->thirdparty_id; 5144 5145 resv_id = cdb->resv_id; 5146 length = scsi_2btoul(cdb->length); 5147 break; 5148 } 5149 } 5150 5151 5152 /* 5153 * XXX KDM right now, we only support LUN reservation. We don't 5154 * support 3rd party reservations, or extent reservations, which 5155 * might actually need the parameter list. If we've gotten this 5156 * far, we've got a LUN reservation. Anything else got kicked out 5157 * above. So, according to SPC, ignore the length. 5158 */ 5159 length = 0; 5160 5161 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5162 && (length > 0)) { 5163 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5164 ctsio->kern_data_len = length; 5165 ctsio->kern_total_len = length; 5166 ctsio->kern_data_resid = 0; 5167 ctsio->kern_rel_offset = 0; 5168 ctsio->kern_sg_entries = 0; 5169 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5170 ctsio->be_move_done = ctl_config_move_done; 5171 ctl_datamove((union ctl_io *)ctsio); 5172 5173 return (CTL_RETVAL_COMPLETE); 5174 } 5175 5176 if (length > 0) 5177 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5178 5179 mtx_lock(&lun->lun_lock); 5180 5181 /* 5182 * According to SPC, it is not an error for an intiator to attempt 5183 * to release a reservation on a LUN that isn't reserved, or that 5184 * is reserved by another initiator. The reservation can only be 5185 * released, though, by the initiator who made it or by one of 5186 * several reset type events. 5187 */ 5188 if (lun->flags & CTL_LUN_RESERVED) { 5189 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5190 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5191 && (ctsio->io_hdr.nexus.targ_target.id == 5192 lun->rsv_nexus.targ_target.id)) { 5193 lun->flags &= ~CTL_LUN_RESERVED; 5194 } 5195 } 5196 5197 mtx_unlock(&lun->lun_lock); 5198 5199 ctsio->scsi_status = SCSI_STATUS_OK; 5200 ctsio->io_hdr.status = CTL_SUCCESS; 5201 5202 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5203 free(ctsio->kern_data_ptr, M_CTL); 5204 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5205 } 5206 5207 ctl_done((union ctl_io *)ctsio); 5208 return (CTL_RETVAL_COMPLETE); 5209} 5210 5211int 5212ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5213{ 5214 int extent, thirdparty, longid; 5215 int resv_id, length; 5216 uint64_t thirdparty_id; 5217 struct ctl_softc *ctl_softc; 5218 struct ctl_lun *lun; 5219 5220 extent = 0; 5221 thirdparty = 0; 5222 longid = 0; 5223 resv_id = 0; 5224 length = 0; 5225 thirdparty_id = 0; 5226 5227 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5228 5229 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5230 ctl_softc = control_softc; 5231 5232 switch (ctsio->cdb[0]) { 5233 case RESERVE_10: { 5234 struct scsi_reserve_10 *cdb; 5235 5236 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5237 5238 if (cdb->byte2 & SR10_LONGID) 5239 longid = 1; 5240 else 5241 thirdparty_id = cdb->thirdparty_id; 5242 5243 resv_id = cdb->resv_id; 5244 length = scsi_2btoul(cdb->length); 5245 break; 5246 } 5247 } 5248 5249 /* 5250 * XXX KDM right now, we only support LUN reservation. We don't 5251 * support 3rd party reservations, or extent reservations, which 5252 * might actually need the parameter list. If we've gotten this 5253 * far, we've got a LUN reservation. Anything else got kicked out 5254 * above. So, according to SPC, ignore the length. 5255 */ 5256 length = 0; 5257 5258 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5259 && (length > 0)) { 5260 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5261 ctsio->kern_data_len = length; 5262 ctsio->kern_total_len = length; 5263 ctsio->kern_data_resid = 0; 5264 ctsio->kern_rel_offset = 0; 5265 ctsio->kern_sg_entries = 0; 5266 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5267 ctsio->be_move_done = ctl_config_move_done; 5268 ctl_datamove((union ctl_io *)ctsio); 5269 5270 return (CTL_RETVAL_COMPLETE); 5271 } 5272 5273 if (length > 0) 5274 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5275 5276 mtx_lock(&lun->lun_lock); 5277 if (lun->flags & CTL_LUN_RESERVED) { 5278 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5279 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5280 || (ctsio->io_hdr.nexus.targ_target.id != 5281 lun->rsv_nexus.targ_target.id)) { 5282 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5283 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5284 goto bailout; 5285 } 5286 } 5287 5288 lun->flags |= CTL_LUN_RESERVED; 5289 lun->rsv_nexus = ctsio->io_hdr.nexus; 5290 5291 ctsio->scsi_status = SCSI_STATUS_OK; 5292 ctsio->io_hdr.status = CTL_SUCCESS; 5293 5294bailout: 5295 mtx_unlock(&lun->lun_lock); 5296 5297 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5298 free(ctsio->kern_data_ptr, M_CTL); 5299 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5300 } 5301 5302 ctl_done((union ctl_io *)ctsio); 5303 return (CTL_RETVAL_COMPLETE); 5304} 5305 5306int 5307ctl_start_stop(struct ctl_scsiio *ctsio) 5308{ 5309 struct scsi_start_stop_unit *cdb; 5310 struct ctl_lun *lun; 5311 struct ctl_softc *ctl_softc; 5312 int retval; 5313 5314 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5315 5316 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5317 ctl_softc = control_softc; 5318 retval = 0; 5319 5320 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5321 5322 /* 5323 * XXX KDM 5324 * We don't support the immediate bit on a stop unit. In order to 5325 * do that, we would need to code up a way to know that a stop is 5326 * pending, and hold off any new commands until it completes, one 5327 * way or another. Then we could accept or reject those commands 5328 * depending on its status. We would almost need to do the reverse 5329 * of what we do below for an immediate start -- return the copy of 5330 * the ctl_io to the FETD with status to send to the host (and to 5331 * free the copy!) and then free the original I/O once the stop 5332 * actually completes. That way, the OOA queue mechanism can work 5333 * to block commands that shouldn't proceed. Another alternative 5334 * would be to put the copy in the queue in place of the original, 5335 * and return the original back to the caller. That could be 5336 * slightly safer.. 5337 */ 5338 if ((cdb->byte2 & SSS_IMMED) 5339 && ((cdb->how & SSS_START) == 0)) { 5340 ctl_set_invalid_field(ctsio, 5341 /*sks_valid*/ 1, 5342 /*command*/ 1, 5343 /*field*/ 1, 5344 /*bit_valid*/ 1, 5345 /*bit*/ 0); 5346 ctl_done((union ctl_io *)ctsio); 5347 return (CTL_RETVAL_COMPLETE); 5348 } 5349 5350 if ((lun->flags & CTL_LUN_PR_RESERVED) 5351 && ((cdb->how & SSS_START)==0)) { 5352 uint32_t residx; 5353 5354 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5355 if (!lun->per_res[residx].registered 5356 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5357 5358 ctl_set_reservation_conflict(ctsio); 5359 ctl_done((union ctl_io *)ctsio); 5360 return (CTL_RETVAL_COMPLETE); 5361 } 5362 } 5363 5364 /* 5365 * If there is no backend on this device, we can't start or stop 5366 * it. In theory we shouldn't get any start/stop commands in the 5367 * first place at this level if the LUN doesn't have a backend. 5368 * That should get stopped by the command decode code. 5369 */ 5370 if (lun->backend == NULL) { 5371 ctl_set_invalid_opcode(ctsio); 5372 ctl_done((union ctl_io *)ctsio); 5373 return (CTL_RETVAL_COMPLETE); 5374 } 5375 5376 /* 5377 * XXX KDM Copan-specific offline behavior. 5378 * Figure out a reasonable way to port this? 5379 */ 5380#ifdef NEEDTOPORT 5381 mtx_lock(&lun->lun_lock); 5382 5383 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5384 && (lun->flags & CTL_LUN_OFFLINE)) { 5385 /* 5386 * If the LUN is offline, and the on/offline bit isn't set, 5387 * reject the start or stop. Otherwise, let it through. 5388 */ 5389 mtx_unlock(&lun->lun_lock); 5390 ctl_set_lun_not_ready(ctsio); 5391 ctl_done((union ctl_io *)ctsio); 5392 } else { 5393 mtx_unlock(&lun->lun_lock); 5394#endif /* NEEDTOPORT */ 5395 /* 5396 * This could be a start or a stop when we're online, 5397 * or a stop/offline or start/online. A start or stop when 5398 * we're offline is covered in the case above. 5399 */ 5400 /* 5401 * In the non-immediate case, we send the request to 5402 * the backend and return status to the user when 5403 * it is done. 5404 * 5405 * In the immediate case, we allocate a new ctl_io 5406 * to hold a copy of the request, and send that to 5407 * the backend. We then set good status on the 5408 * user's request and return it immediately. 5409 */ 5410 if (cdb->byte2 & SSS_IMMED) { 5411 union ctl_io *new_io; 5412 5413 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5414 if (new_io == NULL) { 5415 ctl_set_busy(ctsio); 5416 ctl_done((union ctl_io *)ctsio); 5417 } else { 5418 ctl_copy_io((union ctl_io *)ctsio, 5419 new_io); 5420 retval = lun->backend->config_write(new_io); 5421 ctl_set_success(ctsio); 5422 ctl_done((union ctl_io *)ctsio); 5423 } 5424 } else { 5425 retval = lun->backend->config_write( 5426 (union ctl_io *)ctsio); 5427 } 5428#ifdef NEEDTOPORT 5429 } 5430#endif 5431 return (retval); 5432} 5433 5434/* 5435 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5436 * we don't really do anything with the LBA and length fields if the user 5437 * passes them in. Instead we'll just flush out the cache for the entire 5438 * LUN. 5439 */ 5440int 5441ctl_sync_cache(struct ctl_scsiio *ctsio) 5442{ 5443 struct ctl_lun *lun; 5444 struct ctl_softc *ctl_softc; 5445 uint64_t starting_lba; 5446 uint32_t block_count; 5447 int retval; 5448 5449 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5450 5451 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5452 ctl_softc = control_softc; 5453 retval = 0; 5454 5455 switch (ctsio->cdb[0]) { 5456 case SYNCHRONIZE_CACHE: { 5457 struct scsi_sync_cache *cdb; 5458 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5459 5460 starting_lba = scsi_4btoul(cdb->begin_lba); 5461 block_count = scsi_2btoul(cdb->lb_count); 5462 break; 5463 } 5464 case SYNCHRONIZE_CACHE_16: { 5465 struct scsi_sync_cache_16 *cdb; 5466 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5467 5468 starting_lba = scsi_8btou64(cdb->begin_lba); 5469 block_count = scsi_4btoul(cdb->lb_count); 5470 break; 5471 } 5472 default: 5473 ctl_set_invalid_opcode(ctsio); 5474 ctl_done((union ctl_io *)ctsio); 5475 goto bailout; 5476 break; /* NOTREACHED */ 5477 } 5478 5479 /* 5480 * We check the LBA and length, but don't do anything with them. 5481 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5482 * get flushed. This check will just help satisfy anyone who wants 5483 * to see an error for an out of range LBA. 5484 */ 5485 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5486 ctl_set_lba_out_of_range(ctsio); 5487 ctl_done((union ctl_io *)ctsio); 5488 goto bailout; 5489 } 5490 5491 /* 5492 * If this LUN has no backend, we can't flush the cache anyway. 5493 */ 5494 if (lun->backend == NULL) { 5495 ctl_set_invalid_opcode(ctsio); 5496 ctl_done((union ctl_io *)ctsio); 5497 goto bailout; 5498 } 5499 5500 /* 5501 * Check to see whether we're configured to send the SYNCHRONIZE 5502 * CACHE command directly to the back end. 5503 */ 5504 mtx_lock(&lun->lun_lock); 5505 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5506 && (++(lun->sync_count) >= lun->sync_interval)) { 5507 lun->sync_count = 0; 5508 mtx_unlock(&lun->lun_lock); 5509 retval = lun->backend->config_write((union ctl_io *)ctsio); 5510 } else { 5511 mtx_unlock(&lun->lun_lock); 5512 ctl_set_success(ctsio); 5513 ctl_done((union ctl_io *)ctsio); 5514 } 5515 5516bailout: 5517 5518 return (retval); 5519} 5520 5521int 5522ctl_format(struct ctl_scsiio *ctsio) 5523{ 5524 struct scsi_format *cdb; 5525 struct ctl_lun *lun; 5526 struct ctl_softc *ctl_softc; 5527 int length, defect_list_len; 5528 5529 CTL_DEBUG_PRINT(("ctl_format\n")); 5530 5531 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5532 ctl_softc = control_softc; 5533 5534 cdb = (struct scsi_format *)ctsio->cdb; 5535 5536 length = 0; 5537 if (cdb->byte2 & SF_FMTDATA) { 5538 if (cdb->byte2 & SF_LONGLIST) 5539 length = sizeof(struct scsi_format_header_long); 5540 else 5541 length = sizeof(struct scsi_format_header_short); 5542 } 5543 5544 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5545 && (length > 0)) { 5546 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5547 ctsio->kern_data_len = length; 5548 ctsio->kern_total_len = length; 5549 ctsio->kern_data_resid = 0; 5550 ctsio->kern_rel_offset = 0; 5551 ctsio->kern_sg_entries = 0; 5552 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5553 ctsio->be_move_done = ctl_config_move_done; 5554 ctl_datamove((union ctl_io *)ctsio); 5555 5556 return (CTL_RETVAL_COMPLETE); 5557 } 5558 5559 defect_list_len = 0; 5560 5561 if (cdb->byte2 & SF_FMTDATA) { 5562 if (cdb->byte2 & SF_LONGLIST) { 5563 struct scsi_format_header_long *header; 5564 5565 header = (struct scsi_format_header_long *) 5566 ctsio->kern_data_ptr; 5567 5568 defect_list_len = scsi_4btoul(header->defect_list_len); 5569 if (defect_list_len != 0) { 5570 ctl_set_invalid_field(ctsio, 5571 /*sks_valid*/ 1, 5572 /*command*/ 0, 5573 /*field*/ 2, 5574 /*bit_valid*/ 0, 5575 /*bit*/ 0); 5576 goto bailout; 5577 } 5578 } else { 5579 struct scsi_format_header_short *header; 5580 5581 header = (struct scsi_format_header_short *) 5582 ctsio->kern_data_ptr; 5583 5584 defect_list_len = scsi_2btoul(header->defect_list_len); 5585 if (defect_list_len != 0) { 5586 ctl_set_invalid_field(ctsio, 5587 /*sks_valid*/ 1, 5588 /*command*/ 0, 5589 /*field*/ 2, 5590 /*bit_valid*/ 0, 5591 /*bit*/ 0); 5592 goto bailout; 5593 } 5594 } 5595 } 5596 5597 /* 5598 * The format command will clear out the "Medium format corrupted" 5599 * status if set by the configuration code. That status is really 5600 * just a way to notify the host that we have lost the media, and 5601 * get them to issue a command that will basically make them think 5602 * they're blowing away the media. 5603 */ 5604 mtx_lock(&lun->lun_lock); 5605 lun->flags &= ~CTL_LUN_INOPERABLE; 5606 mtx_unlock(&lun->lun_lock); 5607 5608 ctsio->scsi_status = SCSI_STATUS_OK; 5609 ctsio->io_hdr.status = CTL_SUCCESS; 5610bailout: 5611 5612 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5613 free(ctsio->kern_data_ptr, M_CTL); 5614 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5615 } 5616 5617 ctl_done((union ctl_io *)ctsio); 5618 return (CTL_RETVAL_COMPLETE); 5619} 5620 5621int 5622ctl_read_buffer(struct ctl_scsiio *ctsio) 5623{ 5624 struct scsi_read_buffer *cdb; 5625 struct ctl_lun *lun; 5626 int buffer_offset, len; 5627 static uint8_t descr[4]; 5628 static uint8_t echo_descr[4] = { 0 }; 5629 5630 CTL_DEBUG_PRINT(("ctl_read_buffer\n")); 5631 5632 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5633 cdb = (struct scsi_read_buffer *)ctsio->cdb; 5634 5635 if (lun->flags & CTL_LUN_PR_RESERVED) { 5636 uint32_t residx; 5637 5638 /* 5639 * XXX KDM need a lock here. 5640 */ 5641 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5642 if ((lun->res_type == SPR_TYPE_EX_AC 5643 && residx != lun->pr_res_idx) 5644 || ((lun->res_type == SPR_TYPE_EX_AC_RO 5645 || lun->res_type == SPR_TYPE_EX_AC_AR) 5646 && !lun->per_res[residx].registered)) { 5647 ctl_set_reservation_conflict(ctsio); 5648 ctl_done((union ctl_io *)ctsio); 5649 return (CTL_RETVAL_COMPLETE); 5650 } 5651 } 5652 5653 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA && 5654 (cdb->byte2 & RWB_MODE) != RWB_MODE_ECHO_DESCR && 5655 (cdb->byte2 & RWB_MODE) != RWB_MODE_DESCR) { 5656 ctl_set_invalid_field(ctsio, 5657 /*sks_valid*/ 1, 5658 /*command*/ 1, 5659 /*field*/ 1, 5660 /*bit_valid*/ 1, 5661 /*bit*/ 4); 5662 ctl_done((union ctl_io *)ctsio); 5663 return (CTL_RETVAL_COMPLETE); 5664 } 5665 5666 len = scsi_3btoul(cdb->length); 5667 buffer_offset = scsi_3btoul(cdb->offset); 5668 5669 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5670 ctl_set_invalid_field(ctsio, 5671 /*sks_valid*/ 1, 5672 /*command*/ 1, 5673 /*field*/ 6, 5674 /*bit_valid*/ 0, 5675 /*bit*/ 0); 5676 ctl_done((union ctl_io *)ctsio); 5677 return (CTL_RETVAL_COMPLETE); 5678 } 5679 5680 if ((cdb->byte2 & RWB_MODE) == RWB_MODE_DESCR) { 5681 descr[0] = 0; 5682 scsi_ulto3b(sizeof(lun->write_buffer), &descr[1]); 5683 ctsio->kern_data_ptr = descr; 5684 len = min(len, sizeof(descr)); 5685 } else if ((cdb->byte2 & RWB_MODE) == RWB_MODE_ECHO_DESCR) { 5686 ctsio->kern_data_ptr = echo_descr; 5687 len = min(len, sizeof(echo_descr)); 5688 } else 5689 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5690 ctsio->kern_data_len = len; 5691 ctsio->kern_total_len = len; 5692 ctsio->kern_data_resid = 0; 5693 ctsio->kern_rel_offset = 0; 5694 ctsio->kern_sg_entries = 0; 5695 ctsio->be_move_done = ctl_config_move_done; 5696 ctl_datamove((union ctl_io *)ctsio); 5697 5698 return (CTL_RETVAL_COMPLETE); 5699} 5700 5701int 5702ctl_write_buffer(struct ctl_scsiio *ctsio) 5703{ 5704 struct scsi_write_buffer *cdb; 5705 struct ctl_lun *lun; 5706 int buffer_offset, len; 5707 5708 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5709 5710 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5711 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5712 5713 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5714 ctl_set_invalid_field(ctsio, 5715 /*sks_valid*/ 1, 5716 /*command*/ 1, 5717 /*field*/ 1, 5718 /*bit_valid*/ 1, 5719 /*bit*/ 4); 5720 ctl_done((union ctl_io *)ctsio); 5721 return (CTL_RETVAL_COMPLETE); 5722 } 5723 5724 len = scsi_3btoul(cdb->length); 5725 buffer_offset = scsi_3btoul(cdb->offset); 5726 5727 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5728 ctl_set_invalid_field(ctsio, 5729 /*sks_valid*/ 1, 5730 /*command*/ 1, 5731 /*field*/ 6, 5732 /*bit_valid*/ 0, 5733 /*bit*/ 0); 5734 ctl_done((union ctl_io *)ctsio); 5735 return (CTL_RETVAL_COMPLETE); 5736 } 5737 5738 /* 5739 * If we've got a kernel request that hasn't been malloced yet, 5740 * malloc it and tell the caller the data buffer is here. 5741 */ 5742 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5743 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5744 ctsio->kern_data_len = len; 5745 ctsio->kern_total_len = len; 5746 ctsio->kern_data_resid = 0; 5747 ctsio->kern_rel_offset = 0; 5748 ctsio->kern_sg_entries = 0; 5749 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5750 ctsio->be_move_done = ctl_config_move_done; 5751 ctl_datamove((union ctl_io *)ctsio); 5752 5753 return (CTL_RETVAL_COMPLETE); 5754 } 5755 5756 ctl_done((union ctl_io *)ctsio); 5757 5758 return (CTL_RETVAL_COMPLETE); 5759} 5760 5761int 5762ctl_write_same(struct ctl_scsiio *ctsio) 5763{ 5764 struct ctl_lun *lun; 5765 struct ctl_lba_len_flags *lbalen; 5766 uint64_t lba; 5767 uint32_t num_blocks; 5768 int len, retval; 5769 uint8_t byte2; 5770 5771 retval = CTL_RETVAL_COMPLETE; 5772 5773 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5774 5775 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5776 5777 switch (ctsio->cdb[0]) { 5778 case WRITE_SAME_10: { 5779 struct scsi_write_same_10 *cdb; 5780 5781 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5782 5783 lba = scsi_4btoul(cdb->addr); 5784 num_blocks = scsi_2btoul(cdb->length); 5785 byte2 = cdb->byte2; 5786 break; 5787 } 5788 case WRITE_SAME_16: { 5789 struct scsi_write_same_16 *cdb; 5790 5791 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5792 5793 lba = scsi_8btou64(cdb->addr); 5794 num_blocks = scsi_4btoul(cdb->length); 5795 byte2 = cdb->byte2; 5796 break; 5797 } 5798 default: 5799 /* 5800 * We got a command we don't support. This shouldn't 5801 * happen, commands should be filtered out above us. 5802 */ 5803 ctl_set_invalid_opcode(ctsio); 5804 ctl_done((union ctl_io *)ctsio); 5805 5806 return (CTL_RETVAL_COMPLETE); 5807 break; /* NOTREACHED */ 5808 } 5809 5810 /* 5811 * The first check is to make sure we're in bounds, the second 5812 * check is to catch wrap-around problems. If the lba + num blocks 5813 * is less than the lba, then we've wrapped around and the block 5814 * range is invalid anyway. 5815 */ 5816 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5817 || ((lba + num_blocks) < lba)) { 5818 ctl_set_lba_out_of_range(ctsio); 5819 ctl_done((union ctl_io *)ctsio); 5820 return (CTL_RETVAL_COMPLETE); 5821 } 5822 5823 /* Zero number of blocks means "to the last logical block" */ 5824 if (num_blocks == 0) { 5825 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5826 ctl_set_invalid_field(ctsio, 5827 /*sks_valid*/ 0, 5828 /*command*/ 1, 5829 /*field*/ 0, 5830 /*bit_valid*/ 0, 5831 /*bit*/ 0); 5832 ctl_done((union ctl_io *)ctsio); 5833 return (CTL_RETVAL_COMPLETE); 5834 } 5835 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5836 } 5837 5838 len = lun->be_lun->blocksize; 5839 5840 /* 5841 * If we've got a kernel request that hasn't been malloced yet, 5842 * malloc it and tell the caller the data buffer is here. 5843 */ 5844 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5845 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5846 ctsio->kern_data_len = len; 5847 ctsio->kern_total_len = len; 5848 ctsio->kern_data_resid = 0; 5849 ctsio->kern_rel_offset = 0; 5850 ctsio->kern_sg_entries = 0; 5851 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5852 ctsio->be_move_done = ctl_config_move_done; 5853 ctl_datamove((union ctl_io *)ctsio); 5854 5855 return (CTL_RETVAL_COMPLETE); 5856 } 5857 5858 lbalen = (struct ctl_lba_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5859 lbalen->lba = lba; 5860 lbalen->len = num_blocks; 5861 lbalen->flags = byte2; 5862 retval = lun->backend->config_write((union ctl_io *)ctsio); 5863 5864 return (retval); 5865} 5866 5867int 5868ctl_unmap(struct ctl_scsiio *ctsio) 5869{ 5870 struct ctl_lun *lun; 5871 struct scsi_unmap *cdb; 5872 struct ctl_ptr_len_flags *ptrlen; 5873 struct scsi_unmap_header *hdr; 5874 struct scsi_unmap_desc *buf, *end; 5875 uint64_t lba; 5876 uint32_t num_blocks; 5877 int len, retval; 5878 uint8_t byte2; 5879 5880 retval = CTL_RETVAL_COMPLETE; 5881 5882 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5883 5884 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5885 cdb = (struct scsi_unmap *)ctsio->cdb; 5886 5887 len = scsi_2btoul(cdb->length); 5888 byte2 = cdb->byte2; 5889 5890 /* 5891 * If we've got a kernel request that hasn't been malloced yet, 5892 * malloc it and tell the caller the data buffer is here. 5893 */ 5894 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5895 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5896 ctsio->kern_data_len = len; 5897 ctsio->kern_total_len = len; 5898 ctsio->kern_data_resid = 0; 5899 ctsio->kern_rel_offset = 0; 5900 ctsio->kern_sg_entries = 0; 5901 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5902 ctsio->be_move_done = ctl_config_move_done; 5903 ctl_datamove((union ctl_io *)ctsio); 5904 5905 return (CTL_RETVAL_COMPLETE); 5906 } 5907 5908 len = ctsio->kern_total_len - ctsio->kern_data_resid; 5909 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 5910 if (len < sizeof (*hdr) || 5911 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 5912 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 5913 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 5914 ctl_set_invalid_field(ctsio, 5915 /*sks_valid*/ 0, 5916 /*command*/ 0, 5917 /*field*/ 0, 5918 /*bit_valid*/ 0, 5919 /*bit*/ 0); 5920 ctl_done((union ctl_io *)ctsio); 5921 return (CTL_RETVAL_COMPLETE); 5922 } 5923 len = scsi_2btoul(hdr->desc_length); 5924 buf = (struct scsi_unmap_desc *)(hdr + 1); 5925 end = buf + len / sizeof(*buf); 5926 5927 ptrlen = (struct ctl_ptr_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5928 ptrlen->ptr = (void *)buf; 5929 ptrlen->len = len; 5930 ptrlen->flags = byte2; 5931 5932 for (; buf < end; buf++) { 5933 lba = scsi_8btou64(buf->lba); 5934 num_blocks = scsi_4btoul(buf->length); 5935 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5936 || ((lba + num_blocks) < lba)) { 5937 ctl_set_lba_out_of_range(ctsio); 5938 ctl_done((union ctl_io *)ctsio); 5939 return (CTL_RETVAL_COMPLETE); 5940 } 5941 } 5942 5943 retval = lun->backend->config_write((union ctl_io *)ctsio); 5944 5945 return (retval); 5946} 5947 5948/* 5949 * Note that this function currently doesn't actually do anything inside 5950 * CTL to enforce things if the DQue bit is turned on. 5951 * 5952 * Also note that this function can't be used in the default case, because 5953 * the DQue bit isn't set in the changeable mask for the control mode page 5954 * anyway. This is just here as an example for how to implement a page 5955 * handler, and a placeholder in case we want to allow the user to turn 5956 * tagged queueing on and off. 5957 * 5958 * The D_SENSE bit handling is functional, however, and will turn 5959 * descriptor sense on and off for a given LUN. 5960 */ 5961int 5962ctl_control_page_handler(struct ctl_scsiio *ctsio, 5963 struct ctl_page_index *page_index, uint8_t *page_ptr) 5964{ 5965 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5966 struct ctl_lun *lun; 5967 struct ctl_softc *softc; 5968 int set_ua; 5969 uint32_t initidx; 5970 5971 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5972 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5973 set_ua = 0; 5974 5975 user_cp = (struct scsi_control_page *)page_ptr; 5976 current_cp = (struct scsi_control_page *) 5977 (page_index->page_data + (page_index->page_len * 5978 CTL_PAGE_CURRENT)); 5979 saved_cp = (struct scsi_control_page *) 5980 (page_index->page_data + (page_index->page_len * 5981 CTL_PAGE_SAVED)); 5982 5983 softc = control_softc; 5984 5985 mtx_lock(&lun->lun_lock); 5986 if (((current_cp->rlec & SCP_DSENSE) == 0) 5987 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 5988 /* 5989 * Descriptor sense is currently turned off and the user 5990 * wants to turn it on. 5991 */ 5992 current_cp->rlec |= SCP_DSENSE; 5993 saved_cp->rlec |= SCP_DSENSE; 5994 lun->flags |= CTL_LUN_SENSE_DESC; 5995 set_ua = 1; 5996 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 5997 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 5998 /* 5999 * Descriptor sense is currently turned on, and the user 6000 * wants to turn it off. 6001 */ 6002 current_cp->rlec &= ~SCP_DSENSE; 6003 saved_cp->rlec &= ~SCP_DSENSE; 6004 lun->flags &= ~CTL_LUN_SENSE_DESC; 6005 set_ua = 1; 6006 } 6007 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 6008 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6009#ifdef NEEDTOPORT 6010 csevent_log(CSC_CTL | CSC_SHELF_SW | 6011 CTL_UNTAG_TO_UNTAG, 6012 csevent_LogType_Trace, 6013 csevent_Severity_Information, 6014 csevent_AlertLevel_Green, 6015 csevent_FRU_Firmware, 6016 csevent_FRU_Unknown, 6017 "Received untagged to untagged transition"); 6018#endif /* NEEDTOPORT */ 6019 } else { 6020#ifdef NEEDTOPORT 6021 csevent_log(CSC_CTL | CSC_SHELF_SW | 6022 CTL_UNTAG_TO_TAG, 6023 csevent_LogType_ConfigChange, 6024 csevent_Severity_Information, 6025 csevent_AlertLevel_Green, 6026 csevent_FRU_Firmware, 6027 csevent_FRU_Unknown, 6028 "Received untagged to tagged " 6029 "queueing transition"); 6030#endif /* NEEDTOPORT */ 6031 6032 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6033 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6034 set_ua = 1; 6035 } 6036 } else { 6037 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6038#ifdef NEEDTOPORT 6039 csevent_log(CSC_CTL | CSC_SHELF_SW | 6040 CTL_TAG_TO_UNTAG, 6041 csevent_LogType_ConfigChange, 6042 csevent_Severity_Warning, 6043 csevent_AlertLevel_Yellow, 6044 csevent_FRU_Firmware, 6045 csevent_FRU_Unknown, 6046 "Received tagged queueing to untagged " 6047 "transition"); 6048#endif /* NEEDTOPORT */ 6049 6050 current_cp->queue_flags |= SCP_QUEUE_DQUE; 6051 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 6052 set_ua = 1; 6053 } else { 6054#ifdef NEEDTOPORT 6055 csevent_log(CSC_CTL | CSC_SHELF_SW | 6056 CTL_TAG_TO_TAG, 6057 csevent_LogType_Trace, 6058 csevent_Severity_Information, 6059 csevent_AlertLevel_Green, 6060 csevent_FRU_Firmware, 6061 csevent_FRU_Unknown, 6062 "Received tagged queueing to tagged " 6063 "queueing transition"); 6064#endif /* NEEDTOPORT */ 6065 } 6066 } 6067 if (set_ua != 0) { 6068 int i; 6069 /* 6070 * Let other initiators know that the mode 6071 * parameters for this LUN have changed. 6072 */ 6073 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6074 if (i == initidx) 6075 continue; 6076 6077 lun->pending_sense[i].ua_pending |= 6078 CTL_UA_MODE_CHANGE; 6079 } 6080 } 6081 mtx_unlock(&lun->lun_lock); 6082 6083 return (0); 6084} 6085 6086int 6087ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6088 struct ctl_page_index *page_index, uint8_t *page_ptr) 6089{ 6090 return (0); 6091} 6092 6093int 6094ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6095 struct ctl_page_index *page_index, int pc) 6096{ 6097 struct copan_power_subpage *page; 6098 6099 page = (struct copan_power_subpage *)page_index->page_data + 6100 (page_index->page_len * pc); 6101 6102 switch (pc) { 6103 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6104 /* 6105 * We don't update the changable bits for this page. 6106 */ 6107 break; 6108 case SMS_PAGE_CTRL_CURRENT >> 6: 6109 case SMS_PAGE_CTRL_DEFAULT >> 6: 6110 case SMS_PAGE_CTRL_SAVED >> 6: 6111#ifdef NEEDTOPORT 6112 ctl_update_power_subpage(page); 6113#endif 6114 break; 6115 default: 6116#ifdef NEEDTOPORT 6117 EPRINT(0, "Invalid PC %d!!", pc); 6118#endif 6119 break; 6120 } 6121 return (0); 6122} 6123 6124 6125int 6126ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6127 struct ctl_page_index *page_index, uint8_t *page_ptr) 6128{ 6129 struct copan_aps_subpage *user_sp; 6130 struct copan_aps_subpage *current_sp; 6131 union ctl_modepage_info *modepage_info; 6132 struct ctl_softc *softc; 6133 struct ctl_lun *lun; 6134 int retval; 6135 6136 retval = CTL_RETVAL_COMPLETE; 6137 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6138 (page_index->page_len * CTL_PAGE_CURRENT)); 6139 softc = control_softc; 6140 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6141 6142 user_sp = (struct copan_aps_subpage *)page_ptr; 6143 6144 modepage_info = (union ctl_modepage_info *) 6145 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6146 6147 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6148 modepage_info->header.subpage = page_index->subpage; 6149 modepage_info->aps.lock_active = user_sp->lock_active; 6150 6151 mtx_lock(&softc->ctl_lock); 6152 6153 /* 6154 * If there is a request to lock the LUN and another LUN is locked 6155 * this is an error. If the requested LUN is already locked ignore 6156 * the request. If no LUN is locked attempt to lock it. 6157 * if there is a request to unlock the LUN and the LUN is currently 6158 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6159 * if another LUN is locked or no LUN is locked. 6160 */ 6161 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6162 if (softc->aps_locked_lun == lun->lun) { 6163 /* 6164 * This LUN is already locked, so we're done. 6165 */ 6166 retval = CTL_RETVAL_COMPLETE; 6167 } else if (softc->aps_locked_lun == 0) { 6168 /* 6169 * No one has the lock, pass the request to the 6170 * backend. 6171 */ 6172 retval = lun->backend->config_write( 6173 (union ctl_io *)ctsio); 6174 } else { 6175 /* 6176 * Someone else has the lock, throw out the request. 6177 */ 6178 ctl_set_already_locked(ctsio); 6179 free(ctsio->kern_data_ptr, M_CTL); 6180 ctl_done((union ctl_io *)ctsio); 6181 6182 /* 6183 * Set the return value so that ctl_do_mode_select() 6184 * won't try to complete the command. We already 6185 * completed it here. 6186 */ 6187 retval = CTL_RETVAL_ERROR; 6188 } 6189 } else if (softc->aps_locked_lun == lun->lun) { 6190 /* 6191 * This LUN is locked, so pass the unlock request to the 6192 * backend. 6193 */ 6194 retval = lun->backend->config_write((union ctl_io *)ctsio); 6195 } 6196 mtx_unlock(&softc->ctl_lock); 6197 6198 return (retval); 6199} 6200 6201int 6202ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6203 struct ctl_page_index *page_index, 6204 uint8_t *page_ptr) 6205{ 6206 uint8_t *c; 6207 int i; 6208 6209 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6210 ctl_time_io_secs = 6211 (c[0] << 8) | 6212 (c[1] << 0) | 6213 0; 6214 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6215 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6216 printf("page data:"); 6217 for (i=0; i<8; i++) 6218 printf(" %.2x",page_ptr[i]); 6219 printf("\n"); 6220 return (0); 6221} 6222 6223int 6224ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6225 struct ctl_page_index *page_index, 6226 int pc) 6227{ 6228 struct copan_debugconf_subpage *page; 6229 6230 page = (struct copan_debugconf_subpage *)page_index->page_data + 6231 (page_index->page_len * pc); 6232 6233 switch (pc) { 6234 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6235 case SMS_PAGE_CTRL_DEFAULT >> 6: 6236 case SMS_PAGE_CTRL_SAVED >> 6: 6237 /* 6238 * We don't update the changable or default bits for this page. 6239 */ 6240 break; 6241 case SMS_PAGE_CTRL_CURRENT >> 6: 6242 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6243 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6244 break; 6245 default: 6246#ifdef NEEDTOPORT 6247 EPRINT(0, "Invalid PC %d!!", pc); 6248#endif /* NEEDTOPORT */ 6249 break; 6250 } 6251 return (0); 6252} 6253 6254 6255static int 6256ctl_do_mode_select(union ctl_io *io) 6257{ 6258 struct scsi_mode_page_header *page_header; 6259 struct ctl_page_index *page_index; 6260 struct ctl_scsiio *ctsio; 6261 int control_dev, page_len; 6262 int page_len_offset, page_len_size; 6263 union ctl_modepage_info *modepage_info; 6264 struct ctl_lun *lun; 6265 int *len_left, *len_used; 6266 int retval, i; 6267 6268 ctsio = &io->scsiio; 6269 page_index = NULL; 6270 page_len = 0; 6271 retval = CTL_RETVAL_COMPLETE; 6272 6273 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6274 6275 if (lun->be_lun->lun_type != T_DIRECT) 6276 control_dev = 1; 6277 else 6278 control_dev = 0; 6279 6280 modepage_info = (union ctl_modepage_info *) 6281 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6282 len_left = &modepage_info->header.len_left; 6283 len_used = &modepage_info->header.len_used; 6284 6285do_next_page: 6286 6287 page_header = (struct scsi_mode_page_header *) 6288 (ctsio->kern_data_ptr + *len_used); 6289 6290 if (*len_left == 0) { 6291 free(ctsio->kern_data_ptr, M_CTL); 6292 ctl_set_success(ctsio); 6293 ctl_done((union ctl_io *)ctsio); 6294 return (CTL_RETVAL_COMPLETE); 6295 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6296 6297 free(ctsio->kern_data_ptr, M_CTL); 6298 ctl_set_param_len_error(ctsio); 6299 ctl_done((union ctl_io *)ctsio); 6300 return (CTL_RETVAL_COMPLETE); 6301 6302 } else if ((page_header->page_code & SMPH_SPF) 6303 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6304 6305 free(ctsio->kern_data_ptr, M_CTL); 6306 ctl_set_param_len_error(ctsio); 6307 ctl_done((union ctl_io *)ctsio); 6308 return (CTL_RETVAL_COMPLETE); 6309 } 6310 6311 6312 /* 6313 * XXX KDM should we do something with the block descriptor? 6314 */ 6315 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6316 6317 if ((control_dev != 0) 6318 && (lun->mode_pages.index[i].page_flags & 6319 CTL_PAGE_FLAG_DISK_ONLY)) 6320 continue; 6321 6322 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6323 (page_header->page_code & SMPH_PC_MASK)) 6324 continue; 6325 6326 /* 6327 * If neither page has a subpage code, then we've got a 6328 * match. 6329 */ 6330 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6331 && ((page_header->page_code & SMPH_SPF) == 0)) { 6332 page_index = &lun->mode_pages.index[i]; 6333 page_len = page_header->page_length; 6334 break; 6335 } 6336 6337 /* 6338 * If both pages have subpages, then the subpage numbers 6339 * have to match. 6340 */ 6341 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6342 && (page_header->page_code & SMPH_SPF)) { 6343 struct scsi_mode_page_header_sp *sph; 6344 6345 sph = (struct scsi_mode_page_header_sp *)page_header; 6346 6347 if (lun->mode_pages.index[i].subpage == 6348 sph->subpage) { 6349 page_index = &lun->mode_pages.index[i]; 6350 page_len = scsi_2btoul(sph->page_length); 6351 break; 6352 } 6353 } 6354 } 6355 6356 /* 6357 * If we couldn't find the page, or if we don't have a mode select 6358 * handler for it, send back an error to the user. 6359 */ 6360 if ((page_index == NULL) 6361 || (page_index->select_handler == NULL)) { 6362 ctl_set_invalid_field(ctsio, 6363 /*sks_valid*/ 1, 6364 /*command*/ 0, 6365 /*field*/ *len_used, 6366 /*bit_valid*/ 0, 6367 /*bit*/ 0); 6368 free(ctsio->kern_data_ptr, M_CTL); 6369 ctl_done((union ctl_io *)ctsio); 6370 return (CTL_RETVAL_COMPLETE); 6371 } 6372 6373 if (page_index->page_code & SMPH_SPF) { 6374 page_len_offset = 2; 6375 page_len_size = 2; 6376 } else { 6377 page_len_size = 1; 6378 page_len_offset = 1; 6379 } 6380 6381 /* 6382 * If the length the initiator gives us isn't the one we specify in 6383 * the mode page header, or if they didn't specify enough data in 6384 * the CDB to avoid truncating this page, kick out the request. 6385 */ 6386 if ((page_len != (page_index->page_len - page_len_offset - 6387 page_len_size)) 6388 || (*len_left < page_index->page_len)) { 6389 6390 6391 ctl_set_invalid_field(ctsio, 6392 /*sks_valid*/ 1, 6393 /*command*/ 0, 6394 /*field*/ *len_used + page_len_offset, 6395 /*bit_valid*/ 0, 6396 /*bit*/ 0); 6397 free(ctsio->kern_data_ptr, M_CTL); 6398 ctl_done((union ctl_io *)ctsio); 6399 return (CTL_RETVAL_COMPLETE); 6400 } 6401 6402 /* 6403 * Run through the mode page, checking to make sure that the bits 6404 * the user changed are actually legal for him to change. 6405 */ 6406 for (i = 0; i < page_index->page_len; i++) { 6407 uint8_t *user_byte, *change_mask, *current_byte; 6408 int bad_bit; 6409 int j; 6410 6411 user_byte = (uint8_t *)page_header + i; 6412 change_mask = page_index->page_data + 6413 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6414 current_byte = page_index->page_data + 6415 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6416 6417 /* 6418 * Check to see whether the user set any bits in this byte 6419 * that he is not allowed to set. 6420 */ 6421 if ((*user_byte & ~(*change_mask)) == 6422 (*current_byte & ~(*change_mask))) 6423 continue; 6424 6425 /* 6426 * Go through bit by bit to determine which one is illegal. 6427 */ 6428 bad_bit = 0; 6429 for (j = 7; j >= 0; j--) { 6430 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6431 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6432 bad_bit = i; 6433 break; 6434 } 6435 } 6436 ctl_set_invalid_field(ctsio, 6437 /*sks_valid*/ 1, 6438 /*command*/ 0, 6439 /*field*/ *len_used + i, 6440 /*bit_valid*/ 1, 6441 /*bit*/ bad_bit); 6442 free(ctsio->kern_data_ptr, M_CTL); 6443 ctl_done((union ctl_io *)ctsio); 6444 return (CTL_RETVAL_COMPLETE); 6445 } 6446 6447 /* 6448 * Decrement these before we call the page handler, since we may 6449 * end up getting called back one way or another before the handler 6450 * returns to this context. 6451 */ 6452 *len_left -= page_index->page_len; 6453 *len_used += page_index->page_len; 6454 6455 retval = page_index->select_handler(ctsio, page_index, 6456 (uint8_t *)page_header); 6457 6458 /* 6459 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6460 * wait until this queued command completes to finish processing 6461 * the mode page. If it returns anything other than 6462 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6463 * already set the sense information, freed the data pointer, and 6464 * completed the io for us. 6465 */ 6466 if (retval != CTL_RETVAL_COMPLETE) 6467 goto bailout_no_done; 6468 6469 /* 6470 * If the initiator sent us more than one page, parse the next one. 6471 */ 6472 if (*len_left > 0) 6473 goto do_next_page; 6474 6475 ctl_set_success(ctsio); 6476 free(ctsio->kern_data_ptr, M_CTL); 6477 ctl_done((union ctl_io *)ctsio); 6478 6479bailout_no_done: 6480 6481 return (CTL_RETVAL_COMPLETE); 6482 6483} 6484 6485int 6486ctl_mode_select(struct ctl_scsiio *ctsio) 6487{ 6488 int param_len, pf, sp; 6489 int header_size, bd_len; 6490 int len_left, len_used; 6491 struct ctl_page_index *page_index; 6492 struct ctl_lun *lun; 6493 int control_dev, page_len; 6494 union ctl_modepage_info *modepage_info; 6495 int retval; 6496 6497 pf = 0; 6498 sp = 0; 6499 page_len = 0; 6500 len_used = 0; 6501 len_left = 0; 6502 retval = 0; 6503 bd_len = 0; 6504 page_index = NULL; 6505 6506 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6507 6508 if (lun->be_lun->lun_type != T_DIRECT) 6509 control_dev = 1; 6510 else 6511 control_dev = 0; 6512 6513 switch (ctsio->cdb[0]) { 6514 case MODE_SELECT_6: { 6515 struct scsi_mode_select_6 *cdb; 6516 6517 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6518 6519 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6520 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6521 6522 param_len = cdb->length; 6523 header_size = sizeof(struct scsi_mode_header_6); 6524 break; 6525 } 6526 case MODE_SELECT_10: { 6527 struct scsi_mode_select_10 *cdb; 6528 6529 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6530 6531 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6532 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6533 6534 param_len = scsi_2btoul(cdb->length); 6535 header_size = sizeof(struct scsi_mode_header_10); 6536 break; 6537 } 6538 default: 6539 ctl_set_invalid_opcode(ctsio); 6540 ctl_done((union ctl_io *)ctsio); 6541 return (CTL_RETVAL_COMPLETE); 6542 break; /* NOTREACHED */ 6543 } 6544 6545 /* 6546 * From SPC-3: 6547 * "A parameter list length of zero indicates that the Data-Out Buffer 6548 * shall be empty. This condition shall not be considered as an error." 6549 */ 6550 if (param_len == 0) { 6551 ctl_set_success(ctsio); 6552 ctl_done((union ctl_io *)ctsio); 6553 return (CTL_RETVAL_COMPLETE); 6554 } 6555 6556 /* 6557 * Since we'll hit this the first time through, prior to 6558 * allocation, we don't need to free a data buffer here. 6559 */ 6560 if (param_len < header_size) { 6561 ctl_set_param_len_error(ctsio); 6562 ctl_done((union ctl_io *)ctsio); 6563 return (CTL_RETVAL_COMPLETE); 6564 } 6565 6566 /* 6567 * Allocate the data buffer and grab the user's data. In theory, 6568 * we shouldn't have to sanity check the parameter list length here 6569 * because the maximum size is 64K. We should be able to malloc 6570 * that much without too many problems. 6571 */ 6572 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6573 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6574 ctsio->kern_data_len = param_len; 6575 ctsio->kern_total_len = param_len; 6576 ctsio->kern_data_resid = 0; 6577 ctsio->kern_rel_offset = 0; 6578 ctsio->kern_sg_entries = 0; 6579 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6580 ctsio->be_move_done = ctl_config_move_done; 6581 ctl_datamove((union ctl_io *)ctsio); 6582 6583 return (CTL_RETVAL_COMPLETE); 6584 } 6585 6586 switch (ctsio->cdb[0]) { 6587 case MODE_SELECT_6: { 6588 struct scsi_mode_header_6 *mh6; 6589 6590 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6591 bd_len = mh6->blk_desc_len; 6592 break; 6593 } 6594 case MODE_SELECT_10: { 6595 struct scsi_mode_header_10 *mh10; 6596 6597 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6598 bd_len = scsi_2btoul(mh10->blk_desc_len); 6599 break; 6600 } 6601 default: 6602 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6603 break; 6604 } 6605 6606 if (param_len < (header_size + bd_len)) { 6607 free(ctsio->kern_data_ptr, M_CTL); 6608 ctl_set_param_len_error(ctsio); 6609 ctl_done((union ctl_io *)ctsio); 6610 return (CTL_RETVAL_COMPLETE); 6611 } 6612 6613 /* 6614 * Set the IO_CONT flag, so that if this I/O gets passed to 6615 * ctl_config_write_done(), it'll get passed back to 6616 * ctl_do_mode_select() for further processing, or completion if 6617 * we're all done. 6618 */ 6619 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6620 ctsio->io_cont = ctl_do_mode_select; 6621 6622 modepage_info = (union ctl_modepage_info *) 6623 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6624 6625 memset(modepage_info, 0, sizeof(*modepage_info)); 6626 6627 len_left = param_len - header_size - bd_len; 6628 len_used = header_size + bd_len; 6629 6630 modepage_info->header.len_left = len_left; 6631 modepage_info->header.len_used = len_used; 6632 6633 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6634} 6635 6636int 6637ctl_mode_sense(struct ctl_scsiio *ctsio) 6638{ 6639 struct ctl_lun *lun; 6640 int pc, page_code, dbd, llba, subpage; 6641 int alloc_len, page_len, header_len, total_len; 6642 struct scsi_mode_block_descr *block_desc; 6643 struct ctl_page_index *page_index; 6644 int control_dev; 6645 6646 dbd = 0; 6647 llba = 0; 6648 block_desc = NULL; 6649 page_index = NULL; 6650 6651 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6652 6653 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6654 6655 if (lun->be_lun->lun_type != T_DIRECT) 6656 control_dev = 1; 6657 else 6658 control_dev = 0; 6659 6660 if (lun->flags & CTL_LUN_PR_RESERVED) { 6661 uint32_t residx; 6662 6663 /* 6664 * XXX KDM need a lock here. 6665 */ 6666 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 6667 if ((lun->res_type == SPR_TYPE_EX_AC 6668 && residx != lun->pr_res_idx) 6669 || ((lun->res_type == SPR_TYPE_EX_AC_RO 6670 || lun->res_type == SPR_TYPE_EX_AC_AR) 6671 && !lun->per_res[residx].registered)) { 6672 ctl_set_reservation_conflict(ctsio); 6673 ctl_done((union ctl_io *)ctsio); 6674 return (CTL_RETVAL_COMPLETE); 6675 } 6676 } 6677 6678 switch (ctsio->cdb[0]) { 6679 case MODE_SENSE_6: { 6680 struct scsi_mode_sense_6 *cdb; 6681 6682 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6683 6684 header_len = sizeof(struct scsi_mode_hdr_6); 6685 if (cdb->byte2 & SMS_DBD) 6686 dbd = 1; 6687 else 6688 header_len += sizeof(struct scsi_mode_block_descr); 6689 6690 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6691 page_code = cdb->page & SMS_PAGE_CODE; 6692 subpage = cdb->subpage; 6693 alloc_len = cdb->length; 6694 break; 6695 } 6696 case MODE_SENSE_10: { 6697 struct scsi_mode_sense_10 *cdb; 6698 6699 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6700 6701 header_len = sizeof(struct scsi_mode_hdr_10); 6702 6703 if (cdb->byte2 & SMS_DBD) 6704 dbd = 1; 6705 else 6706 header_len += sizeof(struct scsi_mode_block_descr); 6707 if (cdb->byte2 & SMS10_LLBAA) 6708 llba = 1; 6709 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6710 page_code = cdb->page & SMS_PAGE_CODE; 6711 subpage = cdb->subpage; 6712 alloc_len = scsi_2btoul(cdb->length); 6713 break; 6714 } 6715 default: 6716 ctl_set_invalid_opcode(ctsio); 6717 ctl_done((union ctl_io *)ctsio); 6718 return (CTL_RETVAL_COMPLETE); 6719 break; /* NOTREACHED */ 6720 } 6721 6722 /* 6723 * We have to make a first pass through to calculate the size of 6724 * the pages that match the user's query. Then we allocate enough 6725 * memory to hold it, and actually copy the data into the buffer. 6726 */ 6727 switch (page_code) { 6728 case SMS_ALL_PAGES_PAGE: { 6729 int i; 6730 6731 page_len = 0; 6732 6733 /* 6734 * At the moment, values other than 0 and 0xff here are 6735 * reserved according to SPC-3. 6736 */ 6737 if ((subpage != SMS_SUBPAGE_PAGE_0) 6738 && (subpage != SMS_SUBPAGE_ALL)) { 6739 ctl_set_invalid_field(ctsio, 6740 /*sks_valid*/ 1, 6741 /*command*/ 1, 6742 /*field*/ 3, 6743 /*bit_valid*/ 0, 6744 /*bit*/ 0); 6745 ctl_done((union ctl_io *)ctsio); 6746 return (CTL_RETVAL_COMPLETE); 6747 } 6748 6749 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6750 if ((control_dev != 0) 6751 && (lun->mode_pages.index[i].page_flags & 6752 CTL_PAGE_FLAG_DISK_ONLY)) 6753 continue; 6754 6755 /* 6756 * We don't use this subpage if the user didn't 6757 * request all subpages. 6758 */ 6759 if ((lun->mode_pages.index[i].subpage != 0) 6760 && (subpage == SMS_SUBPAGE_PAGE_0)) 6761 continue; 6762 6763#if 0 6764 printf("found page %#x len %d\n", 6765 lun->mode_pages.index[i].page_code & 6766 SMPH_PC_MASK, 6767 lun->mode_pages.index[i].page_len); 6768#endif 6769 page_len += lun->mode_pages.index[i].page_len; 6770 } 6771 break; 6772 } 6773 default: { 6774 int i; 6775 6776 page_len = 0; 6777 6778 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6779 /* Look for the right page code */ 6780 if ((lun->mode_pages.index[i].page_code & 6781 SMPH_PC_MASK) != page_code) 6782 continue; 6783 6784 /* Look for the right subpage or the subpage wildcard*/ 6785 if ((lun->mode_pages.index[i].subpage != subpage) 6786 && (subpage != SMS_SUBPAGE_ALL)) 6787 continue; 6788 6789 /* Make sure the page is supported for this dev type */ 6790 if ((control_dev != 0) 6791 && (lun->mode_pages.index[i].page_flags & 6792 CTL_PAGE_FLAG_DISK_ONLY)) 6793 continue; 6794 6795#if 0 6796 printf("found page %#x len %d\n", 6797 lun->mode_pages.index[i].page_code & 6798 SMPH_PC_MASK, 6799 lun->mode_pages.index[i].page_len); 6800#endif 6801 6802 page_len += lun->mode_pages.index[i].page_len; 6803 } 6804 6805 if (page_len == 0) { 6806 ctl_set_invalid_field(ctsio, 6807 /*sks_valid*/ 1, 6808 /*command*/ 1, 6809 /*field*/ 2, 6810 /*bit_valid*/ 1, 6811 /*bit*/ 5); 6812 ctl_done((union ctl_io *)ctsio); 6813 return (CTL_RETVAL_COMPLETE); 6814 } 6815 break; 6816 } 6817 } 6818 6819 total_len = header_len + page_len; 6820#if 0 6821 printf("header_len = %d, page_len = %d, total_len = %d\n", 6822 header_len, page_len, total_len); 6823#endif 6824 6825 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6826 ctsio->kern_sg_entries = 0; 6827 ctsio->kern_data_resid = 0; 6828 ctsio->kern_rel_offset = 0; 6829 if (total_len < alloc_len) { 6830 ctsio->residual = alloc_len - total_len; 6831 ctsio->kern_data_len = total_len; 6832 ctsio->kern_total_len = total_len; 6833 } else { 6834 ctsio->residual = 0; 6835 ctsio->kern_data_len = alloc_len; 6836 ctsio->kern_total_len = alloc_len; 6837 } 6838 6839 switch (ctsio->cdb[0]) { 6840 case MODE_SENSE_6: { 6841 struct scsi_mode_hdr_6 *header; 6842 6843 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6844 6845 header->datalen = ctl_min(total_len - 1, 254); 6846 6847 if (dbd) 6848 header->block_descr_len = 0; 6849 else 6850 header->block_descr_len = 6851 sizeof(struct scsi_mode_block_descr); 6852 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6853 break; 6854 } 6855 case MODE_SENSE_10: { 6856 struct scsi_mode_hdr_10 *header; 6857 int datalen; 6858 6859 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6860 6861 datalen = ctl_min(total_len - 2, 65533); 6862 scsi_ulto2b(datalen, header->datalen); 6863 if (dbd) 6864 scsi_ulto2b(0, header->block_descr_len); 6865 else 6866 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6867 header->block_descr_len); 6868 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6869 break; 6870 } 6871 default: 6872 panic("invalid CDB type %#x", ctsio->cdb[0]); 6873 break; /* NOTREACHED */ 6874 } 6875 6876 /* 6877 * If we've got a disk, use its blocksize in the block 6878 * descriptor. Otherwise, just set it to 0. 6879 */ 6880 if (dbd == 0) { 6881 if (control_dev != 0) 6882 scsi_ulto3b(lun->be_lun->blocksize, 6883 block_desc->block_len); 6884 else 6885 scsi_ulto3b(0, block_desc->block_len); 6886 } 6887 6888 switch (page_code) { 6889 case SMS_ALL_PAGES_PAGE: { 6890 int i, data_used; 6891 6892 data_used = header_len; 6893 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6894 struct ctl_page_index *page_index; 6895 6896 page_index = &lun->mode_pages.index[i]; 6897 6898 if ((control_dev != 0) 6899 && (page_index->page_flags & 6900 CTL_PAGE_FLAG_DISK_ONLY)) 6901 continue; 6902 6903 /* 6904 * We don't use this subpage if the user didn't 6905 * request all subpages. We already checked (above) 6906 * to make sure the user only specified a subpage 6907 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6908 */ 6909 if ((page_index->subpage != 0) 6910 && (subpage == SMS_SUBPAGE_PAGE_0)) 6911 continue; 6912 6913 /* 6914 * Call the handler, if it exists, to update the 6915 * page to the latest values. 6916 */ 6917 if (page_index->sense_handler != NULL) 6918 page_index->sense_handler(ctsio, page_index,pc); 6919 6920 memcpy(ctsio->kern_data_ptr + data_used, 6921 page_index->page_data + 6922 (page_index->page_len * pc), 6923 page_index->page_len); 6924 data_used += page_index->page_len; 6925 } 6926 break; 6927 } 6928 default: { 6929 int i, data_used; 6930 6931 data_used = header_len; 6932 6933 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6934 struct ctl_page_index *page_index; 6935 6936 page_index = &lun->mode_pages.index[i]; 6937 6938 /* Look for the right page code */ 6939 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6940 continue; 6941 6942 /* Look for the right subpage or the subpage wildcard*/ 6943 if ((page_index->subpage != subpage) 6944 && (subpage != SMS_SUBPAGE_ALL)) 6945 continue; 6946 6947 /* Make sure the page is supported for this dev type */ 6948 if ((control_dev != 0) 6949 && (page_index->page_flags & 6950 CTL_PAGE_FLAG_DISK_ONLY)) 6951 continue; 6952 6953 /* 6954 * Call the handler, if it exists, to update the 6955 * page to the latest values. 6956 */ 6957 if (page_index->sense_handler != NULL) 6958 page_index->sense_handler(ctsio, page_index,pc); 6959 6960 memcpy(ctsio->kern_data_ptr + data_used, 6961 page_index->page_data + 6962 (page_index->page_len * pc), 6963 page_index->page_len); 6964 data_used += page_index->page_len; 6965 } 6966 break; 6967 } 6968 } 6969 6970 ctsio->scsi_status = SCSI_STATUS_OK; 6971 6972 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6973 ctsio->be_move_done = ctl_config_move_done; 6974 ctl_datamove((union ctl_io *)ctsio); 6975 6976 return (CTL_RETVAL_COMPLETE); 6977} 6978 6979int 6980ctl_read_capacity(struct ctl_scsiio *ctsio) 6981{ 6982 struct scsi_read_capacity *cdb; 6983 struct scsi_read_capacity_data *data; 6984 struct ctl_lun *lun; 6985 uint32_t lba; 6986 6987 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6988 6989 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6990 6991 lba = scsi_4btoul(cdb->addr); 6992 if (((cdb->pmi & SRC_PMI) == 0) 6993 && (lba != 0)) { 6994 ctl_set_invalid_field(/*ctsio*/ ctsio, 6995 /*sks_valid*/ 1, 6996 /*command*/ 1, 6997 /*field*/ 2, 6998 /*bit_valid*/ 0, 6999 /*bit*/ 0); 7000 ctl_done((union ctl_io *)ctsio); 7001 return (CTL_RETVAL_COMPLETE); 7002 } 7003 7004 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7005 7006 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7007 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 7008 ctsio->residual = 0; 7009 ctsio->kern_data_len = sizeof(*data); 7010 ctsio->kern_total_len = sizeof(*data); 7011 ctsio->kern_data_resid = 0; 7012 ctsio->kern_rel_offset = 0; 7013 ctsio->kern_sg_entries = 0; 7014 7015 /* 7016 * If the maximum LBA is greater than 0xfffffffe, the user must 7017 * issue a SERVICE ACTION IN (16) command, with the read capacity 7018 * serivce action set. 7019 */ 7020 if (lun->be_lun->maxlba > 0xfffffffe) 7021 scsi_ulto4b(0xffffffff, data->addr); 7022 else 7023 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 7024 7025 /* 7026 * XXX KDM this may not be 512 bytes... 7027 */ 7028 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7029 7030 ctsio->scsi_status = SCSI_STATUS_OK; 7031 7032 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7033 ctsio->be_move_done = ctl_config_move_done; 7034 ctl_datamove((union ctl_io *)ctsio); 7035 7036 return (CTL_RETVAL_COMPLETE); 7037} 7038 7039int 7040ctl_read_capacity_16(struct ctl_scsiio *ctsio) 7041{ 7042 struct scsi_read_capacity_16 *cdb; 7043 struct scsi_read_capacity_data_long *data; 7044 struct ctl_lun *lun; 7045 uint64_t lba; 7046 uint32_t alloc_len; 7047 7048 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 7049 7050 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 7051 7052 alloc_len = scsi_4btoul(cdb->alloc_len); 7053 lba = scsi_8btou64(cdb->addr); 7054 7055 if ((cdb->reladr & SRC16_PMI) 7056 && (lba != 0)) { 7057 ctl_set_invalid_field(/*ctsio*/ ctsio, 7058 /*sks_valid*/ 1, 7059 /*command*/ 1, 7060 /*field*/ 2, 7061 /*bit_valid*/ 0, 7062 /*bit*/ 0); 7063 ctl_done((union ctl_io *)ctsio); 7064 return (CTL_RETVAL_COMPLETE); 7065 } 7066 7067 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7068 7069 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7070 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 7071 7072 if (sizeof(*data) < alloc_len) { 7073 ctsio->residual = alloc_len - sizeof(*data); 7074 ctsio->kern_data_len = sizeof(*data); 7075 ctsio->kern_total_len = sizeof(*data); 7076 } else { 7077 ctsio->residual = 0; 7078 ctsio->kern_data_len = alloc_len; 7079 ctsio->kern_total_len = alloc_len; 7080 } 7081 ctsio->kern_data_resid = 0; 7082 ctsio->kern_rel_offset = 0; 7083 ctsio->kern_sg_entries = 0; 7084 7085 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7086 /* XXX KDM this may not be 512 bytes... */ 7087 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7088 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7089 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7090 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7091 data->lalba_lbp[0] |= SRC16_LBPME; 7092 7093 ctsio->scsi_status = SCSI_STATUS_OK; 7094 7095 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7096 ctsio->be_move_done = ctl_config_move_done; 7097 ctl_datamove((union ctl_io *)ctsio); 7098 7099 return (CTL_RETVAL_COMPLETE); 7100} 7101 7102int 7103ctl_report_tagret_port_groups(struct ctl_scsiio *ctsio) 7104{ 7105 struct scsi_maintenance_in *cdb; 7106 int retval; 7107 int alloc_len, total_len = 0; 7108 int num_target_port_groups, single; 7109 struct ctl_lun *lun; 7110 struct ctl_softc *softc; 7111 struct scsi_target_group_data *rtg_ptr; 7112 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 7113 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 7114 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 7115 7116 CTL_DEBUG_PRINT(("ctl_report_tagret_port_groups\n")); 7117 7118 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 7119 softc = control_softc; 7120 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7121 7122 retval = CTL_RETVAL_COMPLETE; 7123 7124 single = ctl_is_single; 7125 if (single) 7126 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 7127 else 7128 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7129 7130 total_len = sizeof(struct scsi_target_group_data) + 7131 sizeof(struct scsi_target_port_group_descriptor) * 7132 num_target_port_groups + 7133 sizeof(struct scsi_target_port_descriptor) * 7134 NUM_PORTS_PER_GRP * num_target_port_groups; 7135 7136 alloc_len = scsi_4btoul(cdb->length); 7137 7138 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7139 7140 ctsio->kern_sg_entries = 0; 7141 7142 if (total_len < alloc_len) { 7143 ctsio->residual = alloc_len - total_len; 7144 ctsio->kern_data_len = total_len; 7145 ctsio->kern_total_len = total_len; 7146 } else { 7147 ctsio->residual = 0; 7148 ctsio->kern_data_len = alloc_len; 7149 ctsio->kern_total_len = alloc_len; 7150 } 7151 ctsio->kern_data_resid = 0; 7152 ctsio->kern_rel_offset = 0; 7153 7154 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7155 7156 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7157 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7158 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7159 &tp_desc_ptr1_1->desc_list[0]; 7160 7161 if (single == 0) { 7162 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7163 &tp_desc_ptr1_2->desc_list[0]; 7164 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7165 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7166 &tp_desc_ptr2_1->desc_list[0]; 7167 } else { 7168 tpg_desc_ptr2 = NULL; 7169 tp_desc_ptr2_1 = NULL; 7170 tp_desc_ptr2_2 = NULL; 7171 } 7172 7173 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7174 if (single == 0) { 7175 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7176 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7177 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7178 tpg_desc_ptr2->pref_state = 7179 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7180 } else { 7181 tpg_desc_ptr1->pref_state = 7182 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7183 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7184 } 7185 } else { 7186 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7187 tpg_desc_ptr1->pref_state = 7188 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7189 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7190 } else { 7191 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7192 tpg_desc_ptr2->pref_state = 7193 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7194 } 7195 } 7196 } else { 7197 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7198 } 7199 tpg_desc_ptr1->support = 0; 7200 tpg_desc_ptr1->target_port_group[1] = 1; 7201 tpg_desc_ptr1->status = TPG_IMPLICIT; 7202 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7203 7204 if (single == 0) { 7205 tpg_desc_ptr2->support = 0; 7206 tpg_desc_ptr2->target_port_group[1] = 2; 7207 tpg_desc_ptr2->status = TPG_IMPLICIT; 7208 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7209 7210 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7211 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7212 7213 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7214 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7215 } else { 7216 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7217 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7218 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7219 } else { 7220 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7221 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7222 } 7223 } 7224 7225 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7226 ctsio->be_move_done = ctl_config_move_done; 7227 7228 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7229 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7230 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7231 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7232 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7233 7234 ctl_datamove((union ctl_io *)ctsio); 7235 return(retval); 7236} 7237 7238int 7239ctl_report_supported_opcodes(struct ctl_scsiio *ctsio) 7240{ 7241 struct ctl_lun *lun; 7242 struct scsi_report_supported_opcodes *cdb; 7243 const struct ctl_cmd_entry *entry, *sentry; 7244 struct scsi_report_supported_opcodes_all *all; 7245 struct scsi_report_supported_opcodes_descr *descr; 7246 struct scsi_report_supported_opcodes_one *one; 7247 int retval; 7248 int alloc_len, total_len; 7249 int opcode, service_action, i, j, num; 7250 7251 CTL_DEBUG_PRINT(("ctl_report_supported_opcodes\n")); 7252 7253 cdb = (struct scsi_report_supported_opcodes *)ctsio->cdb; 7254 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7255 7256 retval = CTL_RETVAL_COMPLETE; 7257 7258 opcode = cdb->requested_opcode; 7259 service_action = scsi_2btoul(cdb->requested_service_action); 7260 switch (cdb->options & RSO_OPTIONS_MASK) { 7261 case RSO_OPTIONS_ALL: 7262 num = 0; 7263 for (i = 0; i < 256; i++) { 7264 entry = &ctl_cmd_table[i]; 7265 if (entry->flags & CTL_CMD_FLAG_SA5) { 7266 for (j = 0; j < 32; j++) { 7267 sentry = &((const struct ctl_cmd_entry *) 7268 entry->execute)[j]; 7269 if (ctl_cmd_applicable( 7270 lun->be_lun->lun_type, sentry)) 7271 num++; 7272 } 7273 } else { 7274 if (ctl_cmd_applicable(lun->be_lun->lun_type, 7275 entry)) 7276 num++; 7277 } 7278 } 7279 total_len = sizeof(struct scsi_report_supported_opcodes_all) + 7280 num * sizeof(struct scsi_report_supported_opcodes_descr); 7281 break; 7282 case RSO_OPTIONS_OC: 7283 if (ctl_cmd_table[opcode].flags & CTL_CMD_FLAG_SA5) { 7284 ctl_set_invalid_field(/*ctsio*/ ctsio, 7285 /*sks_valid*/ 1, 7286 /*command*/ 1, 7287 /*field*/ 2, 7288 /*bit_valid*/ 1, 7289 /*bit*/ 2); 7290 ctl_done((union ctl_io *)ctsio); 7291 return (CTL_RETVAL_COMPLETE); 7292 } 7293 total_len = sizeof(struct scsi_report_supported_opcodes_one) + 32; 7294 break; 7295 case RSO_OPTIONS_OC_SA: 7296 if ((ctl_cmd_table[opcode].flags & CTL_CMD_FLAG_SA5) == 0 || 7297 service_action >= 32) { 7298 ctl_set_invalid_field(/*ctsio*/ ctsio, 7299 /*sks_valid*/ 1, 7300 /*command*/ 1, 7301 /*field*/ 2, 7302 /*bit_valid*/ 1, 7303 /*bit*/ 2); 7304 ctl_done((union ctl_io *)ctsio); 7305 return (CTL_RETVAL_COMPLETE); 7306 } 7307 total_len = sizeof(struct scsi_report_supported_opcodes_one) + 32; 7308 break; 7309 default: 7310 ctl_set_invalid_field(/*ctsio*/ ctsio, 7311 /*sks_valid*/ 1, 7312 /*command*/ 1, 7313 /*field*/ 2, 7314 /*bit_valid*/ 1, 7315 /*bit*/ 2); 7316 ctl_done((union ctl_io *)ctsio); 7317 return (CTL_RETVAL_COMPLETE); 7318 } 7319 7320 alloc_len = scsi_4btoul(cdb->length); 7321 7322 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7323 7324 ctsio->kern_sg_entries = 0; 7325 7326 if (total_len < alloc_len) { 7327 ctsio->residual = alloc_len - total_len; 7328 ctsio->kern_data_len = total_len; 7329 ctsio->kern_total_len = total_len; 7330 } else { 7331 ctsio->residual = 0; 7332 ctsio->kern_data_len = alloc_len; 7333 ctsio->kern_total_len = alloc_len; 7334 } 7335 ctsio->kern_data_resid = 0; 7336 ctsio->kern_rel_offset = 0; 7337 7338 switch (cdb->options & RSO_OPTIONS_MASK) { 7339 case RSO_OPTIONS_ALL: 7340 all = (struct scsi_report_supported_opcodes_all *) 7341 ctsio->kern_data_ptr; 7342 num = 0; 7343 for (i = 0; i < 256; i++) { 7344 entry = &ctl_cmd_table[i]; 7345 if (entry->flags & CTL_CMD_FLAG_SA5) { 7346 for (j = 0; j < 32; j++) { 7347 sentry = &((const struct ctl_cmd_entry *) 7348 entry->execute)[j]; 7349 if (!ctl_cmd_applicable( 7350 lun->be_lun->lun_type, sentry)) 7351 continue; 7352 descr = &all->descr[num++]; 7353 descr->opcode = i; 7354 scsi_ulto2b(j, descr->service_action); 7355 descr->flags = RSO_SERVACTV; 7356 scsi_ulto2b(sentry->length, 7357 descr->cdb_length); 7358 } 7359 } else { 7360 if (!ctl_cmd_applicable(lun->be_lun->lun_type, 7361 entry)) 7362 continue; 7363 descr = &all->descr[num++]; 7364 descr->opcode = i; 7365 scsi_ulto2b(0, descr->service_action); 7366 descr->flags = 0; 7367 scsi_ulto2b(entry->length, descr->cdb_length); 7368 } 7369 } 7370 scsi_ulto4b( 7371 num * sizeof(struct scsi_report_supported_opcodes_descr), 7372 all->length); 7373 break; 7374 case RSO_OPTIONS_OC: 7375 one = (struct scsi_report_supported_opcodes_one *) 7376 ctsio->kern_data_ptr; 7377 entry = &ctl_cmd_table[opcode]; 7378 goto fill_one; 7379 case RSO_OPTIONS_OC_SA: 7380 one = (struct scsi_report_supported_opcodes_one *) 7381 ctsio->kern_data_ptr; 7382 entry = &ctl_cmd_table[opcode]; 7383 entry = &((const struct ctl_cmd_entry *) 7384 entry->execute)[service_action]; 7385fill_one: 7386 if (ctl_cmd_applicable(lun->be_lun->lun_type, entry)) { 7387 one->support = 3; 7388 scsi_ulto2b(entry->length, one->cdb_length); 7389 one->cdb_usage[0] = opcode; 7390 memcpy(&one->cdb_usage[1], entry->usage, 7391 entry->length - 1); 7392 } else 7393 one->support = 1; 7394 break; 7395 } 7396 7397 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7398 ctsio->be_move_done = ctl_config_move_done; 7399 7400 ctl_datamove((union ctl_io *)ctsio); 7401 return(retval); 7402} 7403 7404int 7405ctl_report_supported_tmf(struct ctl_scsiio *ctsio) 7406{ 7407 struct ctl_lun *lun; 7408 struct scsi_report_supported_tmf *cdb; 7409 struct scsi_report_supported_tmf_data *data; 7410 int retval; 7411 int alloc_len, total_len; 7412 7413 CTL_DEBUG_PRINT(("ctl_report_supported_tmf\n")); 7414 7415 cdb = (struct scsi_report_supported_tmf *)ctsio->cdb; 7416 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7417 7418 retval = CTL_RETVAL_COMPLETE; 7419 7420 total_len = sizeof(struct scsi_report_supported_tmf_data); 7421 alloc_len = scsi_4btoul(cdb->length); 7422 7423 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7424 7425 ctsio->kern_sg_entries = 0; 7426 7427 if (total_len < alloc_len) { 7428 ctsio->residual = alloc_len - total_len; 7429 ctsio->kern_data_len = total_len; 7430 ctsio->kern_total_len = total_len; 7431 } else { 7432 ctsio->residual = 0; 7433 ctsio->kern_data_len = alloc_len; 7434 ctsio->kern_total_len = alloc_len; 7435 } 7436 ctsio->kern_data_resid = 0; 7437 ctsio->kern_rel_offset = 0; 7438 7439 data = (struct scsi_report_supported_tmf_data *)ctsio->kern_data_ptr; 7440 data->byte1 |= RST_ATS | RST_LURS | RST_TRS; 7441 7442 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7443 ctsio->be_move_done = ctl_config_move_done; 7444 7445 ctl_datamove((union ctl_io *)ctsio); 7446 return (retval); 7447} 7448 7449int 7450ctl_report_timestamp(struct ctl_scsiio *ctsio) 7451{ 7452 struct ctl_lun *lun; 7453 struct scsi_report_timestamp *cdb; 7454 struct scsi_report_timestamp_data *data; 7455 struct timeval tv; 7456 int64_t timestamp; 7457 int retval; 7458 int alloc_len, total_len; 7459 7460 CTL_DEBUG_PRINT(("ctl_report_timestamp\n")); 7461 7462 cdb = (struct scsi_report_timestamp *)ctsio->cdb; 7463 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7464 7465 retval = CTL_RETVAL_COMPLETE; 7466 7467 total_len = sizeof(struct scsi_report_timestamp_data); 7468 alloc_len = scsi_4btoul(cdb->length); 7469 7470 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7471 7472 ctsio->kern_sg_entries = 0; 7473 7474 if (total_len < alloc_len) { 7475 ctsio->residual = alloc_len - total_len; 7476 ctsio->kern_data_len = total_len; 7477 ctsio->kern_total_len = total_len; 7478 } else { 7479 ctsio->residual = 0; 7480 ctsio->kern_data_len = alloc_len; 7481 ctsio->kern_total_len = alloc_len; 7482 } 7483 ctsio->kern_data_resid = 0; 7484 ctsio->kern_rel_offset = 0; 7485 7486 data = (struct scsi_report_timestamp_data *)ctsio->kern_data_ptr; 7487 scsi_ulto2b(sizeof(*data) - 2, data->length); 7488 data->origin = RTS_ORIG_OUTSIDE; 7489 getmicrotime(&tv); 7490 timestamp = (int64_t)tv.tv_sec * 1000 + tv.tv_usec / 1000; 7491 scsi_ulto4b(timestamp >> 16, data->timestamp); 7492 scsi_ulto2b(timestamp & 0xffff, &data->timestamp[4]); 7493 7494 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7495 ctsio->be_move_done = ctl_config_move_done; 7496 7497 ctl_datamove((union ctl_io *)ctsio); 7498 return (retval); 7499} 7500 7501int 7502ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7503{ 7504 struct scsi_per_res_in *cdb; 7505 int alloc_len, total_len = 0; 7506 /* struct scsi_per_res_in_rsrv in_data; */ 7507 struct ctl_lun *lun; 7508 struct ctl_softc *softc; 7509 7510 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7511 7512 softc = control_softc; 7513 7514 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7515 7516 alloc_len = scsi_2btoul(cdb->length); 7517 7518 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7519 7520retry: 7521 mtx_lock(&lun->lun_lock); 7522 switch (cdb->action) { 7523 case SPRI_RK: /* read keys */ 7524 total_len = sizeof(struct scsi_per_res_in_keys) + 7525 lun->pr_key_count * 7526 sizeof(struct scsi_per_res_key); 7527 break; 7528 case SPRI_RR: /* read reservation */ 7529 if (lun->flags & CTL_LUN_PR_RESERVED) 7530 total_len = sizeof(struct scsi_per_res_in_rsrv); 7531 else 7532 total_len = sizeof(struct scsi_per_res_in_header); 7533 break; 7534 case SPRI_RC: /* report capabilities */ 7535 total_len = sizeof(struct scsi_per_res_cap); 7536 break; 7537 default: 7538 panic("Invalid PR type %x", cdb->action); 7539 } 7540 mtx_unlock(&lun->lun_lock); 7541 7542 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7543 7544 if (total_len < alloc_len) { 7545 ctsio->residual = alloc_len - total_len; 7546 ctsio->kern_data_len = total_len; 7547 ctsio->kern_total_len = total_len; 7548 } else { 7549 ctsio->residual = 0; 7550 ctsio->kern_data_len = alloc_len; 7551 ctsio->kern_total_len = alloc_len; 7552 } 7553 7554 ctsio->kern_data_resid = 0; 7555 ctsio->kern_rel_offset = 0; 7556 ctsio->kern_sg_entries = 0; 7557 7558 mtx_lock(&lun->lun_lock); 7559 switch (cdb->action) { 7560 case SPRI_RK: { // read keys 7561 struct scsi_per_res_in_keys *res_keys; 7562 int i, key_count; 7563 7564 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7565 7566 /* 7567 * We had to drop the lock to allocate our buffer, which 7568 * leaves time for someone to come in with another 7569 * persistent reservation. (That is unlikely, though, 7570 * since this should be the only persistent reservation 7571 * command active right now.) 7572 */ 7573 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7574 (lun->pr_key_count * 7575 sizeof(struct scsi_per_res_key)))){ 7576 mtx_unlock(&lun->lun_lock); 7577 free(ctsio->kern_data_ptr, M_CTL); 7578 printf("%s: reservation length changed, retrying\n", 7579 __func__); 7580 goto retry; 7581 } 7582 7583 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7584 7585 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7586 lun->pr_key_count, res_keys->header.length); 7587 7588 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7589 if (!lun->per_res[i].registered) 7590 continue; 7591 7592 /* 7593 * We used lun->pr_key_count to calculate the 7594 * size to allocate. If it turns out the number of 7595 * initiators with the registered flag set is 7596 * larger than that (i.e. they haven't been kept in 7597 * sync), we've got a problem. 7598 */ 7599 if (key_count >= lun->pr_key_count) { 7600#ifdef NEEDTOPORT 7601 csevent_log(CSC_CTL | CSC_SHELF_SW | 7602 CTL_PR_ERROR, 7603 csevent_LogType_Fault, 7604 csevent_AlertLevel_Yellow, 7605 csevent_FRU_ShelfController, 7606 csevent_FRU_Firmware, 7607 csevent_FRU_Unknown, 7608 "registered keys %d >= key " 7609 "count %d", key_count, 7610 lun->pr_key_count); 7611#endif 7612 key_count++; 7613 continue; 7614 } 7615 memcpy(res_keys->keys[key_count].key, 7616 lun->per_res[i].res_key.key, 7617 ctl_min(sizeof(res_keys->keys[key_count].key), 7618 sizeof(lun->per_res[i].res_key))); 7619 key_count++; 7620 } 7621 break; 7622 } 7623 case SPRI_RR: { // read reservation 7624 struct scsi_per_res_in_rsrv *res; 7625 int tmp_len, header_only; 7626 7627 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7628 7629 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7630 7631 if (lun->flags & CTL_LUN_PR_RESERVED) 7632 { 7633 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7634 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7635 res->header.length); 7636 header_only = 0; 7637 } else { 7638 tmp_len = sizeof(struct scsi_per_res_in_header); 7639 scsi_ulto4b(0, res->header.length); 7640 header_only = 1; 7641 } 7642 7643 /* 7644 * We had to drop the lock to allocate our buffer, which 7645 * leaves time for someone to come in with another 7646 * persistent reservation. (That is unlikely, though, 7647 * since this should be the only persistent reservation 7648 * command active right now.) 7649 */ 7650 if (tmp_len != total_len) { 7651 mtx_unlock(&lun->lun_lock); 7652 free(ctsio->kern_data_ptr, M_CTL); 7653 printf("%s: reservation status changed, retrying\n", 7654 __func__); 7655 goto retry; 7656 } 7657 7658 /* 7659 * No reservation held, so we're done. 7660 */ 7661 if (header_only != 0) 7662 break; 7663 7664 /* 7665 * If the registration is an All Registrants type, the key 7666 * is 0, since it doesn't really matter. 7667 */ 7668 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7669 memcpy(res->data.reservation, 7670 &lun->per_res[lun->pr_res_idx].res_key, 7671 sizeof(struct scsi_per_res_key)); 7672 } 7673 res->data.scopetype = lun->res_type; 7674 break; 7675 } 7676 case SPRI_RC: //report capabilities 7677 { 7678 struct scsi_per_res_cap *res_cap; 7679 uint16_t type_mask; 7680 7681 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7682 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7683 res_cap->flags2 |= SPRI_TMV | SPRI_ALLOW_3; 7684 type_mask = SPRI_TM_WR_EX_AR | 7685 SPRI_TM_EX_AC_RO | 7686 SPRI_TM_WR_EX_RO | 7687 SPRI_TM_EX_AC | 7688 SPRI_TM_WR_EX | 7689 SPRI_TM_EX_AC_AR; 7690 scsi_ulto2b(type_mask, res_cap->type_mask); 7691 break; 7692 } 7693 case SPRI_RS: //read full status 7694 default: 7695 /* 7696 * This is a bug, because we just checked for this above, 7697 * and should have returned an error. 7698 */ 7699 panic("Invalid PR type %x", cdb->action); 7700 break; /* NOTREACHED */ 7701 } 7702 mtx_unlock(&lun->lun_lock); 7703 7704 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7705 ctsio->be_move_done = ctl_config_move_done; 7706 7707 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7708 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7709 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7710 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7711 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7712 7713 ctl_datamove((union ctl_io *)ctsio); 7714 7715 return (CTL_RETVAL_COMPLETE); 7716} 7717 7718/* 7719 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7720 * it should return. 7721 */ 7722static int 7723ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7724 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7725 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7726 struct scsi_per_res_out_parms* param) 7727{ 7728 union ctl_ha_msg persis_io; 7729 int retval, i; 7730 int isc_retval; 7731 7732 retval = 0; 7733 7734 mtx_lock(&lun->lun_lock); 7735 if (sa_res_key == 0) { 7736 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7737 /* validate scope and type */ 7738 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7739 SPR_LU_SCOPE) { 7740 mtx_unlock(&lun->lun_lock); 7741 ctl_set_invalid_field(/*ctsio*/ ctsio, 7742 /*sks_valid*/ 1, 7743 /*command*/ 1, 7744 /*field*/ 2, 7745 /*bit_valid*/ 1, 7746 /*bit*/ 4); 7747 ctl_done((union ctl_io *)ctsio); 7748 return (1); 7749 } 7750 7751 if (type>8 || type==2 || type==4 || type==0) { 7752 mtx_unlock(&lun->lun_lock); 7753 ctl_set_invalid_field(/*ctsio*/ ctsio, 7754 /*sks_valid*/ 1, 7755 /*command*/ 1, 7756 /*field*/ 2, 7757 /*bit_valid*/ 1, 7758 /*bit*/ 0); 7759 ctl_done((union ctl_io *)ctsio); 7760 return (1); 7761 } 7762 7763 /* temporarily unregister this nexus */ 7764 lun->per_res[residx].registered = 0; 7765 7766 /* 7767 * Unregister everybody else and build UA for 7768 * them 7769 */ 7770 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7771 if (lun->per_res[i].registered == 0) 7772 continue; 7773 7774 if (!persis_offset 7775 && i <CTL_MAX_INITIATORS) 7776 lun->pending_sense[i].ua_pending |= 7777 CTL_UA_REG_PREEMPT; 7778 else if (persis_offset 7779 && i >= persis_offset) 7780 lun->pending_sense[i-persis_offset 7781 ].ua_pending |= 7782 CTL_UA_REG_PREEMPT; 7783 lun->per_res[i].registered = 0; 7784 memset(&lun->per_res[i].res_key, 0, 7785 sizeof(struct scsi_per_res_key)); 7786 } 7787 lun->per_res[residx].registered = 1; 7788 lun->pr_key_count = 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 7794 /* send msg to other side */ 7795 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7796 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7797 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7798 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7799 persis_io.pr.pr_info.res_type = type; 7800 memcpy(persis_io.pr.pr_info.sa_res_key, 7801 param->serv_act_res_key, 7802 sizeof(param->serv_act_res_key)); 7803 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7804 &persis_io, sizeof(persis_io), 0)) > 7805 CTL_HA_STATUS_SUCCESS) { 7806 printf("CTL:Persis Out error returned " 7807 "from ctl_ha_msg_send %d\n", 7808 isc_retval); 7809 } 7810 } else { 7811 /* not all registrants */ 7812 mtx_unlock(&lun->lun_lock); 7813 free(ctsio->kern_data_ptr, M_CTL); 7814 ctl_set_invalid_field(ctsio, 7815 /*sks_valid*/ 1, 7816 /*command*/ 0, 7817 /*field*/ 8, 7818 /*bit_valid*/ 0, 7819 /*bit*/ 0); 7820 ctl_done((union ctl_io *)ctsio); 7821 return (1); 7822 } 7823 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7824 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7825 int found = 0; 7826 7827 if (res_key == sa_res_key) { 7828 /* special case */ 7829 /* 7830 * The spec implies this is not good but doesn't 7831 * say what to do. There are two choices either 7832 * generate a res conflict or check condition 7833 * with illegal field in parameter data. Since 7834 * that is what is done when the sa_res_key is 7835 * zero I'll take that approach since this has 7836 * to do with the sa_res_key. 7837 */ 7838 mtx_unlock(&lun->lun_lock); 7839 free(ctsio->kern_data_ptr, M_CTL); 7840 ctl_set_invalid_field(ctsio, 7841 /*sks_valid*/ 1, 7842 /*command*/ 0, 7843 /*field*/ 8, 7844 /*bit_valid*/ 0, 7845 /*bit*/ 0); 7846 ctl_done((union ctl_io *)ctsio); 7847 return (1); 7848 } 7849 7850 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7851 if (lun->per_res[i].registered 7852 && memcmp(param->serv_act_res_key, 7853 lun->per_res[i].res_key.key, 7854 sizeof(struct scsi_per_res_key)) != 0) 7855 continue; 7856 7857 found = 1; 7858 lun->per_res[i].registered = 0; 7859 memset(&lun->per_res[i].res_key, 0, 7860 sizeof(struct scsi_per_res_key)); 7861 lun->pr_key_count--; 7862 7863 if (!persis_offset 7864 && i < CTL_MAX_INITIATORS) 7865 lun->pending_sense[i].ua_pending |= 7866 CTL_UA_REG_PREEMPT; 7867 else if (persis_offset 7868 && i >= persis_offset) 7869 lun->pending_sense[i-persis_offset].ua_pending|= 7870 CTL_UA_REG_PREEMPT; 7871 } 7872 if (!found) { 7873 mtx_unlock(&lun->lun_lock); 7874 free(ctsio->kern_data_ptr, M_CTL); 7875 ctl_set_reservation_conflict(ctsio); 7876 ctl_done((union ctl_io *)ctsio); 7877 return (CTL_RETVAL_COMPLETE); 7878 } 7879 /* send msg to other side */ 7880 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7881 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7882 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7883 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7884 persis_io.pr.pr_info.res_type = type; 7885 memcpy(persis_io.pr.pr_info.sa_res_key, 7886 param->serv_act_res_key, 7887 sizeof(param->serv_act_res_key)); 7888 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7889 &persis_io, sizeof(persis_io), 0)) > 7890 CTL_HA_STATUS_SUCCESS) { 7891 printf("CTL:Persis Out error returned from " 7892 "ctl_ha_msg_send %d\n", isc_retval); 7893 } 7894 } else { 7895 /* Reserved but not all registrants */ 7896 /* sa_res_key is res holder */ 7897 if (memcmp(param->serv_act_res_key, 7898 lun->per_res[lun->pr_res_idx].res_key.key, 7899 sizeof(struct scsi_per_res_key)) == 0) { 7900 /* validate scope and type */ 7901 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7902 SPR_LU_SCOPE) { 7903 mtx_unlock(&lun->lun_lock); 7904 ctl_set_invalid_field(/*ctsio*/ ctsio, 7905 /*sks_valid*/ 1, 7906 /*command*/ 1, 7907 /*field*/ 2, 7908 /*bit_valid*/ 1, 7909 /*bit*/ 4); 7910 ctl_done((union ctl_io *)ctsio); 7911 return (1); 7912 } 7913 7914 if (type>8 || type==2 || type==4 || type==0) { 7915 mtx_unlock(&lun->lun_lock); 7916 ctl_set_invalid_field(/*ctsio*/ ctsio, 7917 /*sks_valid*/ 1, 7918 /*command*/ 1, 7919 /*field*/ 2, 7920 /*bit_valid*/ 1, 7921 /*bit*/ 0); 7922 ctl_done((union ctl_io *)ctsio); 7923 return (1); 7924 } 7925 7926 /* 7927 * Do the following: 7928 * if sa_res_key != res_key remove all 7929 * registrants w/sa_res_key and generate UA 7930 * for these registrants(Registrations 7931 * Preempted) if it wasn't an exclusive 7932 * reservation generate UA(Reservations 7933 * Preempted) for all other registered nexuses 7934 * if the type has changed. Establish the new 7935 * reservation and holder. If res_key and 7936 * sa_res_key are the same do the above 7937 * except don't unregister the res holder. 7938 */ 7939 7940 /* 7941 * Temporarily unregister so it won't get 7942 * removed or UA generated 7943 */ 7944 lun->per_res[residx].registered = 0; 7945 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7946 if (lun->per_res[i].registered == 0) 7947 continue; 7948 7949 if (memcmp(param->serv_act_res_key, 7950 lun->per_res[i].res_key.key, 7951 sizeof(struct scsi_per_res_key)) == 0) { 7952 lun->per_res[i].registered = 0; 7953 memset(&lun->per_res[i].res_key, 7954 0, 7955 sizeof(struct scsi_per_res_key)); 7956 lun->pr_key_count--; 7957 7958 if (!persis_offset 7959 && i < CTL_MAX_INITIATORS) 7960 lun->pending_sense[i 7961 ].ua_pending |= 7962 CTL_UA_REG_PREEMPT; 7963 else if (persis_offset 7964 && i >= persis_offset) 7965 lun->pending_sense[ 7966 i-persis_offset].ua_pending |= 7967 CTL_UA_REG_PREEMPT; 7968 } else if (type != lun->res_type 7969 && (lun->res_type == SPR_TYPE_WR_EX_RO 7970 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7971 if (!persis_offset 7972 && i < CTL_MAX_INITIATORS) 7973 lun->pending_sense[i 7974 ].ua_pending |= 7975 CTL_UA_RES_RELEASE; 7976 else if (persis_offset 7977 && i >= persis_offset) 7978 lun->pending_sense[ 7979 i-persis_offset 7980 ].ua_pending |= 7981 CTL_UA_RES_RELEASE; 7982 } 7983 } 7984 lun->per_res[residx].registered = 1; 7985 lun->res_type = type; 7986 if (lun->res_type != SPR_TYPE_WR_EX_AR 7987 && lun->res_type != SPR_TYPE_EX_AC_AR) 7988 lun->pr_res_idx = residx; 7989 else 7990 lun->pr_res_idx = 7991 CTL_PR_ALL_REGISTRANTS; 7992 7993 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7994 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7995 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7996 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7997 persis_io.pr.pr_info.res_type = type; 7998 memcpy(persis_io.pr.pr_info.sa_res_key, 7999 param->serv_act_res_key, 8000 sizeof(param->serv_act_res_key)); 8001 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8002 &persis_io, sizeof(persis_io), 0)) > 8003 CTL_HA_STATUS_SUCCESS) { 8004 printf("CTL:Persis Out error returned " 8005 "from ctl_ha_msg_send %d\n", 8006 isc_retval); 8007 } 8008 } else { 8009 /* 8010 * sa_res_key is not the res holder just 8011 * remove registrants 8012 */ 8013 int found=0; 8014 8015 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8016 if (memcmp(param->serv_act_res_key, 8017 lun->per_res[i].res_key.key, 8018 sizeof(struct scsi_per_res_key)) != 0) 8019 continue; 8020 8021 found = 1; 8022 lun->per_res[i].registered = 0; 8023 memset(&lun->per_res[i].res_key, 0, 8024 sizeof(struct scsi_per_res_key)); 8025 lun->pr_key_count--; 8026 8027 if (!persis_offset 8028 && i < CTL_MAX_INITIATORS) 8029 lun->pending_sense[i].ua_pending |= 8030 CTL_UA_REG_PREEMPT; 8031 else if (persis_offset 8032 && i >= persis_offset) 8033 lun->pending_sense[ 8034 i-persis_offset].ua_pending |= 8035 CTL_UA_REG_PREEMPT; 8036 } 8037 8038 if (!found) { 8039 mtx_unlock(&lun->lun_lock); 8040 free(ctsio->kern_data_ptr, M_CTL); 8041 ctl_set_reservation_conflict(ctsio); 8042 ctl_done((union ctl_io *)ctsio); 8043 return (1); 8044 } 8045 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8046 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8047 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 8048 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8049 persis_io.pr.pr_info.res_type = type; 8050 memcpy(persis_io.pr.pr_info.sa_res_key, 8051 param->serv_act_res_key, 8052 sizeof(param->serv_act_res_key)); 8053 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8054 &persis_io, sizeof(persis_io), 0)) > 8055 CTL_HA_STATUS_SUCCESS) { 8056 printf("CTL:Persis Out error returned " 8057 "from ctl_ha_msg_send %d\n", 8058 isc_retval); 8059 } 8060 } 8061 } 8062 8063 lun->PRGeneration++; 8064 mtx_unlock(&lun->lun_lock); 8065 8066 return (retval); 8067} 8068 8069static void 8070ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 8071{ 8072 int i; 8073 8074 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 8075 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 8076 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 8077 msg->pr.pr_info.sa_res_key, 8078 sizeof(struct scsi_per_res_key)) != 0) { 8079 uint64_t sa_res_key; 8080 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 8081 8082 if (sa_res_key == 0) { 8083 /* temporarily unregister this nexus */ 8084 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8085 8086 /* 8087 * Unregister everybody else and build UA for 8088 * them 8089 */ 8090 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8091 if (lun->per_res[i].registered == 0) 8092 continue; 8093 8094 if (!persis_offset 8095 && i < CTL_MAX_INITIATORS) 8096 lun->pending_sense[i].ua_pending |= 8097 CTL_UA_REG_PREEMPT; 8098 else if (persis_offset && i >= persis_offset) 8099 lun->pending_sense[i - 8100 persis_offset].ua_pending |= 8101 CTL_UA_REG_PREEMPT; 8102 lun->per_res[i].registered = 0; 8103 memset(&lun->per_res[i].res_key, 0, 8104 sizeof(struct scsi_per_res_key)); 8105 } 8106 8107 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8108 lun->pr_key_count = 1; 8109 lun->res_type = msg->pr.pr_info.res_type; 8110 if (lun->res_type != SPR_TYPE_WR_EX_AR 8111 && lun->res_type != SPR_TYPE_EX_AC_AR) 8112 lun->pr_res_idx = msg->pr.pr_info.residx; 8113 } else { 8114 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8115 if (memcmp(msg->pr.pr_info.sa_res_key, 8116 lun->per_res[i].res_key.key, 8117 sizeof(struct scsi_per_res_key)) != 0) 8118 continue; 8119 8120 lun->per_res[i].registered = 0; 8121 memset(&lun->per_res[i].res_key, 0, 8122 sizeof(struct scsi_per_res_key)); 8123 lun->pr_key_count--; 8124 8125 if (!persis_offset 8126 && i < persis_offset) 8127 lun->pending_sense[i].ua_pending |= 8128 CTL_UA_REG_PREEMPT; 8129 else if (persis_offset 8130 && i >= persis_offset) 8131 lun->pending_sense[i - 8132 persis_offset].ua_pending |= 8133 CTL_UA_REG_PREEMPT; 8134 } 8135 } 8136 } else { 8137 /* 8138 * Temporarily unregister so it won't get removed 8139 * or UA generated 8140 */ 8141 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8142 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8143 if (lun->per_res[i].registered == 0) 8144 continue; 8145 8146 if (memcmp(msg->pr.pr_info.sa_res_key, 8147 lun->per_res[i].res_key.key, 8148 sizeof(struct scsi_per_res_key)) == 0) { 8149 lun->per_res[i].registered = 0; 8150 memset(&lun->per_res[i].res_key, 0, 8151 sizeof(struct scsi_per_res_key)); 8152 lun->pr_key_count--; 8153 if (!persis_offset 8154 && i < CTL_MAX_INITIATORS) 8155 lun->pending_sense[i].ua_pending |= 8156 CTL_UA_REG_PREEMPT; 8157 else if (persis_offset 8158 && i >= persis_offset) 8159 lun->pending_sense[i - 8160 persis_offset].ua_pending |= 8161 CTL_UA_REG_PREEMPT; 8162 } else if (msg->pr.pr_info.res_type != lun->res_type 8163 && (lun->res_type == SPR_TYPE_WR_EX_RO 8164 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 8165 if (!persis_offset 8166 && i < persis_offset) 8167 lun->pending_sense[i 8168 ].ua_pending |= 8169 CTL_UA_RES_RELEASE; 8170 else if (persis_offset 8171 && i >= persis_offset) 8172 lun->pending_sense[i - 8173 persis_offset].ua_pending |= 8174 CTL_UA_RES_RELEASE; 8175 } 8176 } 8177 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8178 lun->res_type = msg->pr.pr_info.res_type; 8179 if (lun->res_type != SPR_TYPE_WR_EX_AR 8180 && lun->res_type != SPR_TYPE_EX_AC_AR) 8181 lun->pr_res_idx = msg->pr.pr_info.residx; 8182 else 8183 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8184 } 8185 lun->PRGeneration++; 8186 8187} 8188 8189 8190int 8191ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 8192{ 8193 int retval; 8194 int isc_retval; 8195 u_int32_t param_len; 8196 struct scsi_per_res_out *cdb; 8197 struct ctl_lun *lun; 8198 struct scsi_per_res_out_parms* param; 8199 struct ctl_softc *softc; 8200 uint32_t residx; 8201 uint64_t res_key, sa_res_key; 8202 uint8_t type; 8203 union ctl_ha_msg persis_io; 8204 int i; 8205 8206 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 8207 8208 retval = CTL_RETVAL_COMPLETE; 8209 8210 softc = control_softc; 8211 8212 cdb = (struct scsi_per_res_out *)ctsio->cdb; 8213 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8214 8215 /* 8216 * We only support whole-LUN scope. The scope & type are ignored for 8217 * register, register and ignore existing key and clear. 8218 * We sometimes ignore scope and type on preempts too!! 8219 * Verify reservation type here as well. 8220 */ 8221 type = cdb->scope_type & SPR_TYPE_MASK; 8222 if ((cdb->action == SPRO_RESERVE) 8223 || (cdb->action == SPRO_RELEASE)) { 8224 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 8225 ctl_set_invalid_field(/*ctsio*/ ctsio, 8226 /*sks_valid*/ 1, 8227 /*command*/ 1, 8228 /*field*/ 2, 8229 /*bit_valid*/ 1, 8230 /*bit*/ 4); 8231 ctl_done((union ctl_io *)ctsio); 8232 return (CTL_RETVAL_COMPLETE); 8233 } 8234 8235 if (type>8 || type==2 || type==4 || type==0) { 8236 ctl_set_invalid_field(/*ctsio*/ ctsio, 8237 /*sks_valid*/ 1, 8238 /*command*/ 1, 8239 /*field*/ 2, 8240 /*bit_valid*/ 1, 8241 /*bit*/ 0); 8242 ctl_done((union ctl_io *)ctsio); 8243 return (CTL_RETVAL_COMPLETE); 8244 } 8245 } 8246 8247 param_len = scsi_4btoul(cdb->length); 8248 8249 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 8250 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 8251 ctsio->kern_data_len = param_len; 8252 ctsio->kern_total_len = param_len; 8253 ctsio->kern_data_resid = 0; 8254 ctsio->kern_rel_offset = 0; 8255 ctsio->kern_sg_entries = 0; 8256 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 8257 ctsio->be_move_done = ctl_config_move_done; 8258 ctl_datamove((union ctl_io *)ctsio); 8259 8260 return (CTL_RETVAL_COMPLETE); 8261 } 8262 8263 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 8264 8265 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8266 res_key = scsi_8btou64(param->res_key.key); 8267 sa_res_key = scsi_8btou64(param->serv_act_res_key); 8268 8269 /* 8270 * Validate the reservation key here except for SPRO_REG_IGNO 8271 * This must be done for all other service actions 8272 */ 8273 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8274 mtx_lock(&lun->lun_lock); 8275 if (lun->per_res[residx].registered) { 8276 if (memcmp(param->res_key.key, 8277 lun->per_res[residx].res_key.key, 8278 ctl_min(sizeof(param->res_key), 8279 sizeof(lun->per_res[residx].res_key))) != 0) { 8280 /* 8281 * The current key passed in doesn't match 8282 * the one the initiator previously 8283 * registered. 8284 */ 8285 mtx_unlock(&lun->lun_lock); 8286 free(ctsio->kern_data_ptr, M_CTL); 8287 ctl_set_reservation_conflict(ctsio); 8288 ctl_done((union ctl_io *)ctsio); 8289 return (CTL_RETVAL_COMPLETE); 8290 } 8291 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8292 /* 8293 * We are not registered 8294 */ 8295 mtx_unlock(&lun->lun_lock); 8296 free(ctsio->kern_data_ptr, M_CTL); 8297 ctl_set_reservation_conflict(ctsio); 8298 ctl_done((union ctl_io *)ctsio); 8299 return (CTL_RETVAL_COMPLETE); 8300 } else if (res_key != 0) { 8301 /* 8302 * We are not registered and trying to register but 8303 * the register key isn't zero. 8304 */ 8305 mtx_unlock(&lun->lun_lock); 8306 free(ctsio->kern_data_ptr, M_CTL); 8307 ctl_set_reservation_conflict(ctsio); 8308 ctl_done((union ctl_io *)ctsio); 8309 return (CTL_RETVAL_COMPLETE); 8310 } 8311 mtx_unlock(&lun->lun_lock); 8312 } 8313 8314 switch (cdb->action & SPRO_ACTION_MASK) { 8315 case SPRO_REGISTER: 8316 case SPRO_REG_IGNO: { 8317 8318#if 0 8319 printf("Registration received\n"); 8320#endif 8321 8322 /* 8323 * We don't support any of these options, as we report in 8324 * the read capabilities request (see 8325 * ctl_persistent_reserve_in(), above). 8326 */ 8327 if ((param->flags & SPR_SPEC_I_PT) 8328 || (param->flags & SPR_ALL_TG_PT) 8329 || (param->flags & SPR_APTPL)) { 8330 int bit_ptr; 8331 8332 if (param->flags & SPR_APTPL) 8333 bit_ptr = 0; 8334 else if (param->flags & SPR_ALL_TG_PT) 8335 bit_ptr = 2; 8336 else /* SPR_SPEC_I_PT */ 8337 bit_ptr = 3; 8338 8339 free(ctsio->kern_data_ptr, M_CTL); 8340 ctl_set_invalid_field(ctsio, 8341 /*sks_valid*/ 1, 8342 /*command*/ 0, 8343 /*field*/ 20, 8344 /*bit_valid*/ 1, 8345 /*bit*/ bit_ptr); 8346 ctl_done((union ctl_io *)ctsio); 8347 return (CTL_RETVAL_COMPLETE); 8348 } 8349 8350 mtx_lock(&lun->lun_lock); 8351 8352 /* 8353 * The initiator wants to clear the 8354 * key/unregister. 8355 */ 8356 if (sa_res_key == 0) { 8357 if ((res_key == 0 8358 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8359 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8360 && !lun->per_res[residx].registered)) { 8361 mtx_unlock(&lun->lun_lock); 8362 goto done; 8363 } 8364 8365 lun->per_res[residx].registered = 0; 8366 memset(&lun->per_res[residx].res_key, 8367 0, sizeof(lun->per_res[residx].res_key)); 8368 lun->pr_key_count--; 8369 8370 if (residx == lun->pr_res_idx) { 8371 lun->flags &= ~CTL_LUN_PR_RESERVED; 8372 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8373 8374 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8375 || lun->res_type == SPR_TYPE_EX_AC_RO) 8376 && lun->pr_key_count) { 8377 /* 8378 * If the reservation is a registrants 8379 * only type we need to generate a UA 8380 * for other registered inits. The 8381 * sense code should be RESERVATIONS 8382 * RELEASED 8383 */ 8384 8385 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8386 if (lun->per_res[ 8387 i+persis_offset].registered 8388 == 0) 8389 continue; 8390 lun->pending_sense[i 8391 ].ua_pending |= 8392 CTL_UA_RES_RELEASE; 8393 } 8394 } 8395 lun->res_type = 0; 8396 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8397 if (lun->pr_key_count==0) { 8398 lun->flags &= ~CTL_LUN_PR_RESERVED; 8399 lun->res_type = 0; 8400 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8401 } 8402 } 8403 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8404 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8405 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8406 persis_io.pr.pr_info.residx = residx; 8407 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8408 &persis_io, sizeof(persis_io), 0 )) > 8409 CTL_HA_STATUS_SUCCESS) { 8410 printf("CTL:Persis Out error returned from " 8411 "ctl_ha_msg_send %d\n", isc_retval); 8412 } 8413 } else /* sa_res_key != 0 */ { 8414 8415 /* 8416 * If we aren't registered currently then increment 8417 * the key count and set the registered flag. 8418 */ 8419 if (!lun->per_res[residx].registered) { 8420 lun->pr_key_count++; 8421 lun->per_res[residx].registered = 1; 8422 } 8423 8424 memcpy(&lun->per_res[residx].res_key, 8425 param->serv_act_res_key, 8426 ctl_min(sizeof(param->serv_act_res_key), 8427 sizeof(lun->per_res[residx].res_key))); 8428 8429 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8430 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8431 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8432 persis_io.pr.pr_info.residx = residx; 8433 memcpy(persis_io.pr.pr_info.sa_res_key, 8434 param->serv_act_res_key, 8435 sizeof(param->serv_act_res_key)); 8436 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8437 &persis_io, sizeof(persis_io), 0)) > 8438 CTL_HA_STATUS_SUCCESS) { 8439 printf("CTL:Persis Out error returned from " 8440 "ctl_ha_msg_send %d\n", isc_retval); 8441 } 8442 } 8443 lun->PRGeneration++; 8444 mtx_unlock(&lun->lun_lock); 8445 8446 break; 8447 } 8448 case SPRO_RESERVE: 8449#if 0 8450 printf("Reserve executed type %d\n", type); 8451#endif 8452 mtx_lock(&lun->lun_lock); 8453 if (lun->flags & CTL_LUN_PR_RESERVED) { 8454 /* 8455 * if this isn't the reservation holder and it's 8456 * not a "all registrants" type or if the type is 8457 * different then we have a conflict 8458 */ 8459 if ((lun->pr_res_idx != residx 8460 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8461 || lun->res_type != type) { 8462 mtx_unlock(&lun->lun_lock); 8463 free(ctsio->kern_data_ptr, M_CTL); 8464 ctl_set_reservation_conflict(ctsio); 8465 ctl_done((union ctl_io *)ctsio); 8466 return (CTL_RETVAL_COMPLETE); 8467 } 8468 mtx_unlock(&lun->lun_lock); 8469 } else /* create a reservation */ { 8470 /* 8471 * If it's not an "all registrants" type record 8472 * reservation holder 8473 */ 8474 if (type != SPR_TYPE_WR_EX_AR 8475 && type != SPR_TYPE_EX_AC_AR) 8476 lun->pr_res_idx = residx; /* Res holder */ 8477 else 8478 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8479 8480 lun->flags |= CTL_LUN_PR_RESERVED; 8481 lun->res_type = type; 8482 8483 mtx_unlock(&lun->lun_lock); 8484 8485 /* send msg to other side */ 8486 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8487 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8488 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8489 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8490 persis_io.pr.pr_info.res_type = type; 8491 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8492 &persis_io, sizeof(persis_io), 0)) > 8493 CTL_HA_STATUS_SUCCESS) { 8494 printf("CTL:Persis Out error returned from " 8495 "ctl_ha_msg_send %d\n", isc_retval); 8496 } 8497 } 8498 break; 8499 8500 case SPRO_RELEASE: 8501 mtx_lock(&lun->lun_lock); 8502 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8503 /* No reservation exists return good status */ 8504 mtx_unlock(&lun->lun_lock); 8505 goto done; 8506 } 8507 /* 8508 * Is this nexus a reservation holder? 8509 */ 8510 if (lun->pr_res_idx != residx 8511 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8512 /* 8513 * not a res holder return good status but 8514 * do nothing 8515 */ 8516 mtx_unlock(&lun->lun_lock); 8517 goto done; 8518 } 8519 8520 if (lun->res_type != type) { 8521 mtx_unlock(&lun->lun_lock); 8522 free(ctsio->kern_data_ptr, M_CTL); 8523 ctl_set_illegal_pr_release(ctsio); 8524 ctl_done((union ctl_io *)ctsio); 8525 return (CTL_RETVAL_COMPLETE); 8526 } 8527 8528 /* okay to release */ 8529 lun->flags &= ~CTL_LUN_PR_RESERVED; 8530 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8531 lun->res_type = 0; 8532 8533 /* 8534 * if this isn't an exclusive access 8535 * res generate UA for all other 8536 * registrants. 8537 */ 8538 if (type != SPR_TYPE_EX_AC 8539 && type != SPR_TYPE_WR_EX) { 8540 /* 8541 * temporarily unregister so we don't generate UA 8542 */ 8543 lun->per_res[residx].registered = 0; 8544 8545 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8546 if (lun->per_res[i+persis_offset].registered 8547 == 0) 8548 continue; 8549 lun->pending_sense[i].ua_pending |= 8550 CTL_UA_RES_RELEASE; 8551 } 8552 8553 lun->per_res[residx].registered = 1; 8554 } 8555 mtx_unlock(&lun->lun_lock); 8556 /* Send msg to other side */ 8557 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8558 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8559 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8560 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8561 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8562 printf("CTL:Persis Out error returned from " 8563 "ctl_ha_msg_send %d\n", isc_retval); 8564 } 8565 break; 8566 8567 case SPRO_CLEAR: 8568 /* send msg to other side */ 8569 8570 mtx_lock(&lun->lun_lock); 8571 lun->flags &= ~CTL_LUN_PR_RESERVED; 8572 lun->res_type = 0; 8573 lun->pr_key_count = 0; 8574 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8575 8576 8577 memset(&lun->per_res[residx].res_key, 8578 0, sizeof(lun->per_res[residx].res_key)); 8579 lun->per_res[residx].registered = 0; 8580 8581 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8582 if (lun->per_res[i].registered) { 8583 if (!persis_offset && i < CTL_MAX_INITIATORS) 8584 lun->pending_sense[i].ua_pending |= 8585 CTL_UA_RES_PREEMPT; 8586 else if (persis_offset && i >= persis_offset) 8587 lun->pending_sense[i-persis_offset 8588 ].ua_pending |= CTL_UA_RES_PREEMPT; 8589 8590 memset(&lun->per_res[i].res_key, 8591 0, sizeof(struct scsi_per_res_key)); 8592 lun->per_res[i].registered = 0; 8593 } 8594 lun->PRGeneration++; 8595 mtx_unlock(&lun->lun_lock); 8596 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8597 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8598 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8599 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8600 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8601 printf("CTL:Persis Out error returned from " 8602 "ctl_ha_msg_send %d\n", isc_retval); 8603 } 8604 break; 8605 8606 case SPRO_PREEMPT: { 8607 int nretval; 8608 8609 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8610 residx, ctsio, cdb, param); 8611 if (nretval != 0) 8612 return (CTL_RETVAL_COMPLETE); 8613 break; 8614 } 8615 default: 8616 panic("Invalid PR type %x", cdb->action); 8617 } 8618 8619done: 8620 free(ctsio->kern_data_ptr, M_CTL); 8621 ctl_set_success(ctsio); 8622 ctl_done((union ctl_io *)ctsio); 8623 8624 return (retval); 8625} 8626 8627/* 8628 * This routine is for handling a message from the other SC pertaining to 8629 * persistent reserve out. All the error checking will have been done 8630 * so only perorming the action need be done here to keep the two 8631 * in sync. 8632 */ 8633static void 8634ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8635{ 8636 struct ctl_lun *lun; 8637 struct ctl_softc *softc; 8638 int i; 8639 uint32_t targ_lun; 8640 8641 softc = control_softc; 8642 8643 targ_lun = msg->hdr.nexus.targ_mapped_lun; 8644 lun = softc->ctl_luns[targ_lun]; 8645 mtx_lock(&lun->lun_lock); 8646 switch(msg->pr.pr_info.action) { 8647 case CTL_PR_REG_KEY: 8648 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8649 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8650 lun->pr_key_count++; 8651 } 8652 lun->PRGeneration++; 8653 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8654 msg->pr.pr_info.sa_res_key, 8655 sizeof(struct scsi_per_res_key)); 8656 break; 8657 8658 case CTL_PR_UNREG_KEY: 8659 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8660 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8661 0, sizeof(struct scsi_per_res_key)); 8662 lun->pr_key_count--; 8663 8664 /* XXX Need to see if the reservation has been released */ 8665 /* if so do we need to generate UA? */ 8666 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8667 lun->flags &= ~CTL_LUN_PR_RESERVED; 8668 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8669 8670 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8671 || lun->res_type == SPR_TYPE_EX_AC_RO) 8672 && lun->pr_key_count) { 8673 /* 8674 * If the reservation is a registrants 8675 * only type we need to generate a UA 8676 * for other registered inits. The 8677 * sense code should be RESERVATIONS 8678 * RELEASED 8679 */ 8680 8681 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8682 if (lun->per_res[i+ 8683 persis_offset].registered == 0) 8684 continue; 8685 8686 lun->pending_sense[i 8687 ].ua_pending |= 8688 CTL_UA_RES_RELEASE; 8689 } 8690 } 8691 lun->res_type = 0; 8692 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8693 if (lun->pr_key_count==0) { 8694 lun->flags &= ~CTL_LUN_PR_RESERVED; 8695 lun->res_type = 0; 8696 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8697 } 8698 } 8699 lun->PRGeneration++; 8700 break; 8701 8702 case CTL_PR_RESERVE: 8703 lun->flags |= CTL_LUN_PR_RESERVED; 8704 lun->res_type = msg->pr.pr_info.res_type; 8705 lun->pr_res_idx = msg->pr.pr_info.residx; 8706 8707 break; 8708 8709 case CTL_PR_RELEASE: 8710 /* 8711 * if this isn't an exclusive access res generate UA for all 8712 * other registrants. 8713 */ 8714 if (lun->res_type != SPR_TYPE_EX_AC 8715 && lun->res_type != SPR_TYPE_WR_EX) { 8716 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8717 if (lun->per_res[i+persis_offset].registered) 8718 lun->pending_sense[i].ua_pending |= 8719 CTL_UA_RES_RELEASE; 8720 } 8721 8722 lun->flags &= ~CTL_LUN_PR_RESERVED; 8723 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8724 lun->res_type = 0; 8725 break; 8726 8727 case CTL_PR_PREEMPT: 8728 ctl_pro_preempt_other(lun, msg); 8729 break; 8730 case CTL_PR_CLEAR: 8731 lun->flags &= ~CTL_LUN_PR_RESERVED; 8732 lun->res_type = 0; 8733 lun->pr_key_count = 0; 8734 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8735 8736 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8737 if (lun->per_res[i].registered == 0) 8738 continue; 8739 if (!persis_offset 8740 && i < CTL_MAX_INITIATORS) 8741 lun->pending_sense[i].ua_pending |= 8742 CTL_UA_RES_PREEMPT; 8743 else if (persis_offset 8744 && i >= persis_offset) 8745 lun->pending_sense[i-persis_offset].ua_pending|= 8746 CTL_UA_RES_PREEMPT; 8747 memset(&lun->per_res[i].res_key, 0, 8748 sizeof(struct scsi_per_res_key)); 8749 lun->per_res[i].registered = 0; 8750 } 8751 lun->PRGeneration++; 8752 break; 8753 } 8754 8755 mtx_unlock(&lun->lun_lock); 8756} 8757 8758int 8759ctl_read_write(struct ctl_scsiio *ctsio) 8760{ 8761 struct ctl_lun *lun; 8762 struct ctl_lba_len_flags *lbalen; 8763 uint64_t lba; 8764 uint32_t num_blocks; 8765 int fua, dpo; 8766 int retval; 8767 int isread; 8768 8769 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8770 8771 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8772 8773 fua = 0; 8774 dpo = 0; 8775 8776 retval = CTL_RETVAL_COMPLETE; 8777 8778 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8779 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8780 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8781 uint32_t residx; 8782 8783 /* 8784 * XXX KDM need a lock here. 8785 */ 8786 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8787 if ((lun->res_type == SPR_TYPE_EX_AC 8788 && residx != lun->pr_res_idx) 8789 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8790 || lun->res_type == SPR_TYPE_EX_AC_AR) 8791 && !lun->per_res[residx].registered)) { 8792 ctl_set_reservation_conflict(ctsio); 8793 ctl_done((union ctl_io *)ctsio); 8794 return (CTL_RETVAL_COMPLETE); 8795 } 8796 } 8797 8798 switch (ctsio->cdb[0]) { 8799 case READ_6: 8800 case WRITE_6: { 8801 struct scsi_rw_6 *cdb; 8802 8803 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8804 8805 lba = scsi_3btoul(cdb->addr); 8806 /* only 5 bits are valid in the most significant address byte */ 8807 lba &= 0x1fffff; 8808 num_blocks = cdb->length; 8809 /* 8810 * This is correct according to SBC-2. 8811 */ 8812 if (num_blocks == 0) 8813 num_blocks = 256; 8814 break; 8815 } 8816 case READ_10: 8817 case WRITE_10: { 8818 struct scsi_rw_10 *cdb; 8819 8820 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8821 8822 if (cdb->byte2 & SRW10_FUA) 8823 fua = 1; 8824 if (cdb->byte2 & SRW10_DPO) 8825 dpo = 1; 8826 8827 lba = scsi_4btoul(cdb->addr); 8828 num_blocks = scsi_2btoul(cdb->length); 8829 break; 8830 } 8831 case WRITE_VERIFY_10: { 8832 struct scsi_write_verify_10 *cdb; 8833 8834 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8835 8836 /* 8837 * XXX KDM we should do actual write verify support at some 8838 * point. This is obviously fake, we're just translating 8839 * things to a write. So we don't even bother checking the 8840 * BYTCHK field, since we don't do any verification. If 8841 * the user asks for it, we'll just pretend we did it. 8842 */ 8843 if (cdb->byte2 & SWV_DPO) 8844 dpo = 1; 8845 8846 lba = scsi_4btoul(cdb->addr); 8847 num_blocks = scsi_2btoul(cdb->length); 8848 break; 8849 } 8850 case READ_12: 8851 case WRITE_12: { 8852 struct scsi_rw_12 *cdb; 8853 8854 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8855 8856 if (cdb->byte2 & SRW12_FUA) 8857 fua = 1; 8858 if (cdb->byte2 & SRW12_DPO) 8859 dpo = 1; 8860 lba = scsi_4btoul(cdb->addr); 8861 num_blocks = scsi_4btoul(cdb->length); 8862 break; 8863 } 8864 case WRITE_VERIFY_12: { 8865 struct scsi_write_verify_12 *cdb; 8866 8867 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8868 8869 if (cdb->byte2 & SWV_DPO) 8870 dpo = 1; 8871 8872 lba = scsi_4btoul(cdb->addr); 8873 num_blocks = scsi_4btoul(cdb->length); 8874 8875 break; 8876 } 8877 case READ_16: 8878 case WRITE_16: { 8879 struct scsi_rw_16 *cdb; 8880 8881 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8882 8883 if (cdb->byte2 & SRW12_FUA) 8884 fua = 1; 8885 if (cdb->byte2 & SRW12_DPO) 8886 dpo = 1; 8887 8888 lba = scsi_8btou64(cdb->addr); 8889 num_blocks = scsi_4btoul(cdb->length); 8890 break; 8891 } 8892 case WRITE_VERIFY_16: { 8893 struct scsi_write_verify_16 *cdb; 8894 8895 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8896 8897 if (cdb->byte2 & SWV_DPO) 8898 dpo = 1; 8899 8900 lba = scsi_8btou64(cdb->addr); 8901 num_blocks = scsi_4btoul(cdb->length); 8902 break; 8903 } 8904 default: 8905 /* 8906 * We got a command we don't support. This shouldn't 8907 * happen, commands should be filtered out above us. 8908 */ 8909 ctl_set_invalid_opcode(ctsio); 8910 ctl_done((union ctl_io *)ctsio); 8911 8912 return (CTL_RETVAL_COMPLETE); 8913 break; /* NOTREACHED */ 8914 } 8915 8916 /* 8917 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8918 * interesting for us, but if RAIDCore is in write-back mode, 8919 * getting it to do write-through for a particular transaction may 8920 * not be possible. 8921 */ 8922 8923 /* 8924 * The first check is to make sure we're in bounds, the second 8925 * check is to catch wrap-around problems. If the lba + num blocks 8926 * is less than the lba, then we've wrapped around and the block 8927 * range is invalid anyway. 8928 */ 8929 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8930 || ((lba + num_blocks) < lba)) { 8931 ctl_set_lba_out_of_range(ctsio); 8932 ctl_done((union ctl_io *)ctsio); 8933 return (CTL_RETVAL_COMPLETE); 8934 } 8935 8936 /* 8937 * According to SBC-3, a transfer length of 0 is not an error. 8938 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8939 * translates to 256 blocks for those commands. 8940 */ 8941 if (num_blocks == 0) { 8942 ctl_set_success(ctsio); 8943 ctl_done((union ctl_io *)ctsio); 8944 return (CTL_RETVAL_COMPLETE); 8945 } 8946 8947 lbalen = (struct ctl_lba_len_flags *) 8948 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8949 lbalen->lba = lba; 8950 lbalen->len = num_blocks; 8951 lbalen->flags = isread ? CTL_LLF_READ : CTL_LLF_WRITE; 8952 8953 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 8954 ctsio->kern_rel_offset = 0; 8955 8956 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8957 8958 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8959 8960 return (retval); 8961} 8962 8963static int 8964ctl_cnw_cont(union ctl_io *io) 8965{ 8966 struct ctl_scsiio *ctsio; 8967 struct ctl_lun *lun; 8968 struct ctl_lba_len_flags *lbalen; 8969 int retval; 8970 8971 ctsio = &io->scsiio; 8972 ctsio->io_hdr.status = CTL_STATUS_NONE; 8973 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_CONT; 8974 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8975 lbalen = (struct ctl_lba_len_flags *) 8976 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8977 lbalen->flags = CTL_LLF_WRITE; 8978 8979 CTL_DEBUG_PRINT(("ctl_cnw_cont: calling data_submit()\n")); 8980 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8981 return (retval); 8982} 8983 8984int 8985ctl_cnw(struct ctl_scsiio *ctsio) 8986{ 8987 struct ctl_lun *lun; 8988 struct ctl_lba_len_flags *lbalen; 8989 uint64_t lba; 8990 uint32_t num_blocks; 8991 int fua, dpo; 8992 int retval; 8993 8994 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8995 8996 CTL_DEBUG_PRINT(("ctl_cnw: command: %#x\n", ctsio->cdb[0])); 8997 8998 fua = 0; 8999 dpo = 0; 9000 9001 retval = CTL_RETVAL_COMPLETE; 9002 9003 switch (ctsio->cdb[0]) { 9004 case COMPARE_AND_WRITE: { 9005 struct scsi_compare_and_write *cdb; 9006 9007 cdb = (struct scsi_compare_and_write *)ctsio->cdb; 9008 9009 if (cdb->byte2 & SRW10_FUA) 9010 fua = 1; 9011 if (cdb->byte2 & SRW10_DPO) 9012 dpo = 1; 9013 lba = scsi_8btou64(cdb->addr); 9014 num_blocks = cdb->length; 9015 break; 9016 } 9017 default: 9018 /* 9019 * We got a command we don't support. This shouldn't 9020 * happen, commands should be filtered out above us. 9021 */ 9022 ctl_set_invalid_opcode(ctsio); 9023 ctl_done((union ctl_io *)ctsio); 9024 9025 return (CTL_RETVAL_COMPLETE); 9026 break; /* NOTREACHED */ 9027 } 9028 9029 /* 9030 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 9031 * interesting for us, but if RAIDCore is in write-back mode, 9032 * getting it to do write-through for a particular transaction may 9033 * not be possible. 9034 */ 9035 9036 /* 9037 * The first check is to make sure we're in bounds, the second 9038 * check is to catch wrap-around problems. If the lba + num blocks 9039 * is less than the lba, then we've wrapped around and the block 9040 * range is invalid anyway. 9041 */ 9042 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9043 || ((lba + num_blocks) < lba)) { 9044 ctl_set_lba_out_of_range(ctsio); 9045 ctl_done((union ctl_io *)ctsio); 9046 return (CTL_RETVAL_COMPLETE); 9047 } 9048 9049 /* 9050 * According to SBC-3, a transfer length of 0 is not an error. 9051 */ 9052 if (num_blocks == 0) { 9053 ctl_set_success(ctsio); 9054 ctl_done((union ctl_io *)ctsio); 9055 return (CTL_RETVAL_COMPLETE); 9056 } 9057 9058 ctsio->kern_total_len = 2 * num_blocks * lun->be_lun->blocksize; 9059 ctsio->kern_rel_offset = 0; 9060 9061 /* 9062 * Set the IO_CONT flag, so that if this I/O gets passed to 9063 * ctl_data_submit_done(), it'll get passed back to 9064 * ctl_ctl_cnw_cont() for further processing. 9065 */ 9066 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 9067 ctsio->io_cont = ctl_cnw_cont; 9068 9069 lbalen = (struct ctl_lba_len_flags *) 9070 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9071 lbalen->lba = lba; 9072 lbalen->len = num_blocks; 9073 lbalen->flags = CTL_LLF_COMPARE; 9074 9075 CTL_DEBUG_PRINT(("ctl_cnw: calling data_submit()\n")); 9076 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9077 return (retval); 9078} 9079 9080int 9081ctl_verify(struct ctl_scsiio *ctsio) 9082{ 9083 struct ctl_lun *lun; 9084 struct ctl_lba_len_flags *lbalen; 9085 uint64_t lba; 9086 uint32_t num_blocks; 9087 int bytchk, dpo; 9088 int retval; 9089 9090 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9091 9092 CTL_DEBUG_PRINT(("ctl_verify: command: %#x\n", ctsio->cdb[0])); 9093 9094 bytchk = 0; 9095 dpo = 0; 9096 retval = CTL_RETVAL_COMPLETE; 9097 9098 switch (ctsio->cdb[0]) { 9099 case VERIFY_10: { 9100 struct scsi_verify_10 *cdb; 9101 9102 cdb = (struct scsi_verify_10 *)ctsio->cdb; 9103 if (cdb->byte2 & SVFY_BYTCHK) 9104 bytchk = 1; 9105 if (cdb->byte2 & SVFY_DPO) 9106 dpo = 1; 9107 lba = scsi_4btoul(cdb->addr); 9108 num_blocks = scsi_2btoul(cdb->length); 9109 break; 9110 } 9111 case VERIFY_12: { 9112 struct scsi_verify_12 *cdb; 9113 9114 cdb = (struct scsi_verify_12 *)ctsio->cdb; 9115 if (cdb->byte2 & SVFY_BYTCHK) 9116 bytchk = 1; 9117 if (cdb->byte2 & SVFY_DPO) 9118 dpo = 1; 9119 lba = scsi_4btoul(cdb->addr); 9120 num_blocks = scsi_4btoul(cdb->length); 9121 break; 9122 } 9123 case VERIFY_16: { 9124 struct scsi_rw_16 *cdb; 9125 9126 cdb = (struct scsi_rw_16 *)ctsio->cdb; 9127 if (cdb->byte2 & SVFY_BYTCHK) 9128 bytchk = 1; 9129 if (cdb->byte2 & SVFY_DPO) 9130 dpo = 1; 9131 lba = scsi_8btou64(cdb->addr); 9132 num_blocks = scsi_4btoul(cdb->length); 9133 break; 9134 } 9135 default: 9136 /* 9137 * We got a command we don't support. This shouldn't 9138 * happen, commands should be filtered out above us. 9139 */ 9140 ctl_set_invalid_opcode(ctsio); 9141 ctl_done((union ctl_io *)ctsio); 9142 return (CTL_RETVAL_COMPLETE); 9143 } 9144 9145 /* 9146 * The first check is to make sure we're in bounds, the second 9147 * check is to catch wrap-around problems. If the lba + num blocks 9148 * is less than the lba, then we've wrapped around and the block 9149 * range is invalid anyway. 9150 */ 9151 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9152 || ((lba + num_blocks) < lba)) { 9153 ctl_set_lba_out_of_range(ctsio); 9154 ctl_done((union ctl_io *)ctsio); 9155 return (CTL_RETVAL_COMPLETE); 9156 } 9157 9158 /* 9159 * According to SBC-3, a transfer length of 0 is not an error. 9160 */ 9161 if (num_blocks == 0) { 9162 ctl_set_success(ctsio); 9163 ctl_done((union ctl_io *)ctsio); 9164 return (CTL_RETVAL_COMPLETE); 9165 } 9166 9167 lbalen = (struct ctl_lba_len_flags *) 9168 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9169 lbalen->lba = lba; 9170 lbalen->len = num_blocks; 9171 if (bytchk) { 9172 lbalen->flags = CTL_LLF_COMPARE; 9173 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 9174 } else { 9175 lbalen->flags = CTL_LLF_VERIFY; 9176 ctsio->kern_total_len = 0; 9177 } 9178 ctsio->kern_rel_offset = 0; 9179 9180 CTL_DEBUG_PRINT(("ctl_verify: calling data_submit()\n")); 9181 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9182 return (retval); 9183} 9184 9185int 9186ctl_report_luns(struct ctl_scsiio *ctsio) 9187{ 9188 struct scsi_report_luns *cdb; 9189 struct scsi_report_luns_data *lun_data; 9190 struct ctl_lun *lun, *request_lun; 9191 int num_luns, retval; 9192 uint32_t alloc_len, lun_datalen; 9193 int num_filled, well_known; 9194 uint32_t initidx, targ_lun_id, lun_id; 9195 9196 retval = CTL_RETVAL_COMPLETE; 9197 well_known = 0; 9198 9199 cdb = (struct scsi_report_luns *)ctsio->cdb; 9200 9201 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 9202 9203 mtx_lock(&control_softc->ctl_lock); 9204 num_luns = control_softc->num_luns; 9205 mtx_unlock(&control_softc->ctl_lock); 9206 9207 switch (cdb->select_report) { 9208 case RPL_REPORT_DEFAULT: 9209 case RPL_REPORT_ALL: 9210 break; 9211 case RPL_REPORT_WELLKNOWN: 9212 well_known = 1; 9213 num_luns = 0; 9214 break; 9215 default: 9216 ctl_set_invalid_field(ctsio, 9217 /*sks_valid*/ 1, 9218 /*command*/ 1, 9219 /*field*/ 2, 9220 /*bit_valid*/ 0, 9221 /*bit*/ 0); 9222 ctl_done((union ctl_io *)ctsio); 9223 return (retval); 9224 break; /* NOTREACHED */ 9225 } 9226 9227 alloc_len = scsi_4btoul(cdb->length); 9228 /* 9229 * The initiator has to allocate at least 16 bytes for this request, 9230 * so he can at least get the header and the first LUN. Otherwise 9231 * we reject the request (per SPC-3 rev 14, section 6.21). 9232 */ 9233 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 9234 sizeof(struct scsi_report_luns_lundata))) { 9235 ctl_set_invalid_field(ctsio, 9236 /*sks_valid*/ 1, 9237 /*command*/ 1, 9238 /*field*/ 6, 9239 /*bit_valid*/ 0, 9240 /*bit*/ 0); 9241 ctl_done((union ctl_io *)ctsio); 9242 return (retval); 9243 } 9244 9245 request_lun = (struct ctl_lun *) 9246 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9247 9248 lun_datalen = sizeof(*lun_data) + 9249 (num_luns * sizeof(struct scsi_report_luns_lundata)); 9250 9251 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 9252 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 9253 ctsio->kern_sg_entries = 0; 9254 9255 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9256 9257 mtx_lock(&control_softc->ctl_lock); 9258 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 9259 lun_id = targ_lun_id; 9260 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 9261 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 9262 if (lun_id >= CTL_MAX_LUNS) 9263 continue; 9264 lun = control_softc->ctl_luns[lun_id]; 9265 if (lun == NULL) 9266 continue; 9267 9268 if (targ_lun_id <= 0xff) { 9269 /* 9270 * Peripheral addressing method, bus number 0. 9271 */ 9272 lun_data->luns[num_filled].lundata[0] = 9273 RPL_LUNDATA_ATYP_PERIPH; 9274 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 9275 num_filled++; 9276 } else if (targ_lun_id <= 0x3fff) { 9277 /* 9278 * Flat addressing method. 9279 */ 9280 lun_data->luns[num_filled].lundata[0] = 9281 RPL_LUNDATA_ATYP_FLAT | 9282 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 9283#ifdef OLDCTLHEADERS 9284 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 9285 (targ_lun_id & SRLD_BUS_LUN_MASK); 9286#endif 9287 lun_data->luns[num_filled].lundata[1] = 9288#ifdef OLDCTLHEADERS 9289 targ_lun_id >> SRLD_BUS_LUN_BITS; 9290#endif 9291 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 9292 num_filled++; 9293 } else { 9294 printf("ctl_report_luns: bogus LUN number %jd, " 9295 "skipping\n", (intmax_t)targ_lun_id); 9296 } 9297 /* 9298 * According to SPC-3, rev 14 section 6.21: 9299 * 9300 * "The execution of a REPORT LUNS command to any valid and 9301 * installed logical unit shall clear the REPORTED LUNS DATA 9302 * HAS CHANGED unit attention condition for all logical 9303 * units of that target with respect to the requesting 9304 * initiator. A valid and installed logical unit is one 9305 * having a PERIPHERAL QUALIFIER of 000b in the standard 9306 * INQUIRY data (see 6.4.2)." 9307 * 9308 * If request_lun is NULL, the LUN this report luns command 9309 * was issued to is either disabled or doesn't exist. In that 9310 * case, we shouldn't clear any pending lun change unit 9311 * attention. 9312 */ 9313 if (request_lun != NULL) { 9314 mtx_lock(&lun->lun_lock); 9315 lun->pending_sense[initidx].ua_pending &= 9316 ~CTL_UA_LUN_CHANGE; 9317 mtx_unlock(&lun->lun_lock); 9318 } 9319 } 9320 mtx_unlock(&control_softc->ctl_lock); 9321 9322 /* 9323 * It's quite possible that we've returned fewer LUNs than we allocated 9324 * space for. Trim it. 9325 */ 9326 lun_datalen = sizeof(*lun_data) + 9327 (num_filled * sizeof(struct scsi_report_luns_lundata)); 9328 9329 if (lun_datalen < alloc_len) { 9330 ctsio->residual = alloc_len - lun_datalen; 9331 ctsio->kern_data_len = lun_datalen; 9332 ctsio->kern_total_len = lun_datalen; 9333 } else { 9334 ctsio->residual = 0; 9335 ctsio->kern_data_len = alloc_len; 9336 ctsio->kern_total_len = alloc_len; 9337 } 9338 ctsio->kern_data_resid = 0; 9339 ctsio->kern_rel_offset = 0; 9340 ctsio->kern_sg_entries = 0; 9341 9342 /* 9343 * We set this to the actual data length, regardless of how much 9344 * space we actually have to return results. If the user looks at 9345 * this value, he'll know whether or not he allocated enough space 9346 * and reissue the command if necessary. We don't support well 9347 * known logical units, so if the user asks for that, return none. 9348 */ 9349 scsi_ulto4b(lun_datalen - 8, lun_data->length); 9350 9351 /* 9352 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 9353 * this request. 9354 */ 9355 ctsio->scsi_status = SCSI_STATUS_OK; 9356 9357 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9358 ctsio->be_move_done = ctl_config_move_done; 9359 ctl_datamove((union ctl_io *)ctsio); 9360 9361 return (retval); 9362} 9363 9364int 9365ctl_request_sense(struct ctl_scsiio *ctsio) 9366{ 9367 struct scsi_request_sense *cdb; 9368 struct scsi_sense_data *sense_ptr; 9369 struct ctl_lun *lun; 9370 uint32_t initidx; 9371 int have_error; 9372 scsi_sense_data_type sense_format; 9373 9374 cdb = (struct scsi_request_sense *)ctsio->cdb; 9375 9376 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9377 9378 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9379 9380 /* 9381 * Determine which sense format the user wants. 9382 */ 9383 if (cdb->byte2 & SRS_DESC) 9384 sense_format = SSD_TYPE_DESC; 9385 else 9386 sense_format = SSD_TYPE_FIXED; 9387 9388 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9389 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9390 ctsio->kern_sg_entries = 0; 9391 9392 /* 9393 * struct scsi_sense_data, which is currently set to 256 bytes, is 9394 * larger than the largest allowed value for the length field in the 9395 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9396 */ 9397 ctsio->residual = 0; 9398 ctsio->kern_data_len = cdb->length; 9399 ctsio->kern_total_len = cdb->length; 9400 9401 ctsio->kern_data_resid = 0; 9402 ctsio->kern_rel_offset = 0; 9403 ctsio->kern_sg_entries = 0; 9404 9405 /* 9406 * If we don't have a LUN, we don't have any pending sense. 9407 */ 9408 if (lun == NULL) 9409 goto no_sense; 9410 9411 have_error = 0; 9412 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9413 /* 9414 * Check for pending sense, and then for pending unit attentions. 9415 * Pending sense gets returned first, then pending unit attentions. 9416 */ 9417 mtx_lock(&lun->lun_lock); 9418 if (ctl_is_set(lun->have_ca, initidx)) { 9419 scsi_sense_data_type stored_format; 9420 9421 /* 9422 * Check to see which sense format was used for the stored 9423 * sense data. 9424 */ 9425 stored_format = scsi_sense_type( 9426 &lun->pending_sense[initidx].sense); 9427 9428 /* 9429 * If the user requested a different sense format than the 9430 * one we stored, then we need to convert it to the other 9431 * format. If we're going from descriptor to fixed format 9432 * sense data, we may lose things in translation, depending 9433 * on what options were used. 9434 * 9435 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9436 * for some reason we'll just copy it out as-is. 9437 */ 9438 if ((stored_format == SSD_TYPE_FIXED) 9439 && (sense_format == SSD_TYPE_DESC)) 9440 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9441 &lun->pending_sense[initidx].sense, 9442 (struct scsi_sense_data_desc *)sense_ptr); 9443 else if ((stored_format == SSD_TYPE_DESC) 9444 && (sense_format == SSD_TYPE_FIXED)) 9445 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9446 &lun->pending_sense[initidx].sense, 9447 (struct scsi_sense_data_fixed *)sense_ptr); 9448 else 9449 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9450 ctl_min(sizeof(*sense_ptr), 9451 sizeof(lun->pending_sense[initidx].sense))); 9452 9453 ctl_clear_mask(lun->have_ca, initidx); 9454 have_error = 1; 9455 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9456 ctl_ua_type ua_type; 9457 9458 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9459 sense_ptr, sense_format); 9460 if (ua_type != CTL_UA_NONE) { 9461 have_error = 1; 9462 /* We're reporting this UA, so clear it */ 9463 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9464 } 9465 } 9466 mtx_unlock(&lun->lun_lock); 9467 9468 /* 9469 * We already have a pending error, return it. 9470 */ 9471 if (have_error != 0) { 9472 /* 9473 * We report the SCSI status as OK, since the status of the 9474 * request sense command itself is OK. 9475 */ 9476 ctsio->scsi_status = SCSI_STATUS_OK; 9477 9478 /* 9479 * We report 0 for the sense length, because we aren't doing 9480 * autosense in this case. We're reporting sense as 9481 * parameter data. 9482 */ 9483 ctsio->sense_len = 0; 9484 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9485 ctsio->be_move_done = ctl_config_move_done; 9486 ctl_datamove((union ctl_io *)ctsio); 9487 9488 return (CTL_RETVAL_COMPLETE); 9489 } 9490 9491no_sense: 9492 9493 /* 9494 * No sense information to report, so we report that everything is 9495 * okay. 9496 */ 9497 ctl_set_sense_data(sense_ptr, 9498 lun, 9499 sense_format, 9500 /*current_error*/ 1, 9501 /*sense_key*/ SSD_KEY_NO_SENSE, 9502 /*asc*/ 0x00, 9503 /*ascq*/ 0x00, 9504 SSD_ELEM_NONE); 9505 9506 ctsio->scsi_status = SCSI_STATUS_OK; 9507 9508 /* 9509 * We report 0 for the sense length, because we aren't doing 9510 * autosense in this case. We're reporting sense as parameter data. 9511 */ 9512 ctsio->sense_len = 0; 9513 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9514 ctsio->be_move_done = ctl_config_move_done; 9515 ctl_datamove((union ctl_io *)ctsio); 9516 9517 return (CTL_RETVAL_COMPLETE); 9518} 9519 9520int 9521ctl_tur(struct ctl_scsiio *ctsio) 9522{ 9523 struct ctl_lun *lun; 9524 9525 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9526 9527 CTL_DEBUG_PRINT(("ctl_tur\n")); 9528 9529 if (lun == NULL) 9530 return (EINVAL); 9531 9532 ctsio->scsi_status = SCSI_STATUS_OK; 9533 ctsio->io_hdr.status = CTL_SUCCESS; 9534 9535 ctl_done((union ctl_io *)ctsio); 9536 9537 return (CTL_RETVAL_COMPLETE); 9538} 9539 9540#ifdef notyet 9541static int 9542ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9543{ 9544 9545} 9546#endif 9547 9548static int 9549ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9550{ 9551 struct scsi_vpd_supported_pages *pages; 9552 int sup_page_size; 9553 struct ctl_lun *lun; 9554 9555 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9556 9557 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9558 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9559 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9560 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9561 ctsio->kern_sg_entries = 0; 9562 9563 if (sup_page_size < alloc_len) { 9564 ctsio->residual = alloc_len - sup_page_size; 9565 ctsio->kern_data_len = sup_page_size; 9566 ctsio->kern_total_len = sup_page_size; 9567 } else { 9568 ctsio->residual = 0; 9569 ctsio->kern_data_len = alloc_len; 9570 ctsio->kern_total_len = alloc_len; 9571 } 9572 ctsio->kern_data_resid = 0; 9573 ctsio->kern_rel_offset = 0; 9574 ctsio->kern_sg_entries = 0; 9575 9576 /* 9577 * The control device is always connected. The disk device, on the 9578 * other hand, may not be online all the time. Need to change this 9579 * to figure out whether the disk device is actually online or not. 9580 */ 9581 if (lun != NULL) 9582 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9583 lun->be_lun->lun_type; 9584 else 9585 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9586 9587 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9588 /* Supported VPD pages */ 9589 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9590 /* Serial Number */ 9591 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9592 /* Device Identification */ 9593 pages->page_list[2] = SVPD_DEVICE_ID; 9594 /* Block limits */ 9595 pages->page_list[3] = SVPD_BLOCK_LIMITS; 9596 /* Logical Block Provisioning */ 9597 pages->page_list[4] = SVPD_LBP; 9598 9599 ctsio->scsi_status = SCSI_STATUS_OK; 9600 9601 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9602 ctsio->be_move_done = ctl_config_move_done; 9603 ctl_datamove((union ctl_io *)ctsio); 9604 9605 return (CTL_RETVAL_COMPLETE); 9606} 9607 9608static int 9609ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9610{ 9611 struct scsi_vpd_unit_serial_number *sn_ptr; 9612 struct ctl_lun *lun; 9613 9614 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9615 9616 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9617 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9618 ctsio->kern_sg_entries = 0; 9619 9620 if (sizeof(*sn_ptr) < alloc_len) { 9621 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9622 ctsio->kern_data_len = sizeof(*sn_ptr); 9623 ctsio->kern_total_len = sizeof(*sn_ptr); 9624 } else { 9625 ctsio->residual = 0; 9626 ctsio->kern_data_len = alloc_len; 9627 ctsio->kern_total_len = alloc_len; 9628 } 9629 ctsio->kern_data_resid = 0; 9630 ctsio->kern_rel_offset = 0; 9631 ctsio->kern_sg_entries = 0; 9632 9633 /* 9634 * The control device is always connected. The disk device, on the 9635 * other hand, may not be online all the time. Need to change this 9636 * to figure out whether the disk device is actually online or not. 9637 */ 9638 if (lun != NULL) 9639 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9640 lun->be_lun->lun_type; 9641 else 9642 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9643 9644 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9645 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9646 /* 9647 * If we don't have a LUN, we just leave the serial number as 9648 * all spaces. 9649 */ 9650 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9651 if (lun != NULL) { 9652 strncpy((char *)sn_ptr->serial_num, 9653 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9654 } 9655 ctsio->scsi_status = SCSI_STATUS_OK; 9656 9657 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9658 ctsio->be_move_done = ctl_config_move_done; 9659 ctl_datamove((union ctl_io *)ctsio); 9660 9661 return (CTL_RETVAL_COMPLETE); 9662} 9663 9664 9665static int 9666ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9667{ 9668 struct scsi_vpd_device_id *devid_ptr; 9669 struct scsi_vpd_id_descriptor *desc; 9670 struct ctl_softc *ctl_softc; 9671 struct ctl_lun *lun; 9672 struct ctl_port *port; 9673 int data_len; 9674 uint8_t proto; 9675 9676 ctl_softc = control_softc; 9677 9678 port = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9679 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9680 9681 data_len = sizeof(struct scsi_vpd_device_id) + 9682 sizeof(struct scsi_vpd_id_descriptor) + 9683 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9684 sizeof(struct scsi_vpd_id_descriptor) + 9685 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9686 if (lun && lun->lun_devid) 9687 data_len += lun->lun_devid->len; 9688 if (port->port_devid) 9689 data_len += port->port_devid->len; 9690 if (port->target_devid) 9691 data_len += port->target_devid->len; 9692 9693 ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO); 9694 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9695 ctsio->kern_sg_entries = 0; 9696 9697 if (data_len < alloc_len) { 9698 ctsio->residual = alloc_len - data_len; 9699 ctsio->kern_data_len = data_len; 9700 ctsio->kern_total_len = data_len; 9701 } else { 9702 ctsio->residual = 0; 9703 ctsio->kern_data_len = alloc_len; 9704 ctsio->kern_total_len = alloc_len; 9705 } 9706 ctsio->kern_data_resid = 0; 9707 ctsio->kern_rel_offset = 0; 9708 ctsio->kern_sg_entries = 0; 9709 9710 /* 9711 * The control device is always connected. The disk device, on the 9712 * other hand, may not be online all the time. 9713 */ 9714 if (lun != NULL) 9715 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9716 lun->be_lun->lun_type; 9717 else 9718 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9719 devid_ptr->page_code = SVPD_DEVICE_ID; 9720 scsi_ulto2b(data_len - 4, devid_ptr->length); 9721 9722 if (port->port_type == CTL_PORT_FC) 9723 proto = SCSI_PROTO_FC << 4; 9724 else if (port->port_type == CTL_PORT_ISCSI) 9725 proto = SCSI_PROTO_ISCSI << 4; 9726 else 9727 proto = SCSI_PROTO_SPI << 4; 9728 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9729 9730 /* 9731 * We're using a LUN association here. i.e., this device ID is a 9732 * per-LUN identifier. 9733 */ 9734 if (lun && lun->lun_devid) { 9735 memcpy(desc, lun->lun_devid->data, lun->lun_devid->len); 9736 desc = (struct scsi_vpd_id_descriptor *)((uint8_t *)desc + 9737 lun->lun_devid->len); 9738 } 9739 9740 /* 9741 * This is for the WWPN which is a port association. 9742 */ 9743 if (port->port_devid) { 9744 memcpy(desc, port->port_devid->data, port->port_devid->len); 9745 desc = (struct scsi_vpd_id_descriptor *)((uint8_t *)desc + 9746 port->port_devid->len); 9747 } 9748 9749 /* 9750 * This is for the Relative Target Port(type 4h) identifier 9751 */ 9752 desc->proto_codeset = proto | SVPD_ID_CODESET_BINARY; 9753 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 9754 SVPD_ID_TYPE_RELTARG; 9755 desc->length = 4; 9756 scsi_ulto2b(ctsio->io_hdr.nexus.targ_port, &desc->identifier[2]); 9757 desc = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9758 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9759 9760 /* 9761 * This is for the Target Port Group(type 5h) identifier 9762 */ 9763 desc->proto_codeset = proto | SVPD_ID_CODESET_BINARY; 9764 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 9765 SVPD_ID_TYPE_TPORTGRP; 9766 desc->length = 4; 9767 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9768 scsi_ulto2b(1, &desc->identifier[2]); 9769 else 9770 scsi_ulto2b(2, &desc->identifier[2]); 9771 desc = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9772 sizeof(struct scsi_vpd_id_trgt_port_grp_id)); 9773 9774 /* 9775 * This is for the Target identifier 9776 */ 9777 if (port->target_devid) { 9778 memcpy(desc, port->target_devid->data, port->target_devid->len); 9779 } 9780 9781 ctsio->scsi_status = SCSI_STATUS_OK; 9782 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9783 ctsio->be_move_done = ctl_config_move_done; 9784 ctl_datamove((union ctl_io *)ctsio); 9785 9786 return (CTL_RETVAL_COMPLETE); 9787} 9788 9789static int 9790ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9791{ 9792 struct scsi_vpd_block_limits *bl_ptr; 9793 struct ctl_lun *lun; 9794 int bs; 9795 9796 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9797 bs = lun->be_lun->blocksize; 9798 9799 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9800 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9801 ctsio->kern_sg_entries = 0; 9802 9803 if (sizeof(*bl_ptr) < alloc_len) { 9804 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9805 ctsio->kern_data_len = sizeof(*bl_ptr); 9806 ctsio->kern_total_len = sizeof(*bl_ptr); 9807 } else { 9808 ctsio->residual = 0; 9809 ctsio->kern_data_len = alloc_len; 9810 ctsio->kern_total_len = alloc_len; 9811 } 9812 ctsio->kern_data_resid = 0; 9813 ctsio->kern_rel_offset = 0; 9814 ctsio->kern_sg_entries = 0; 9815 9816 /* 9817 * The control device is always connected. The disk device, on the 9818 * other hand, may not be online all the time. Need to change this 9819 * to figure out whether the disk device is actually online or not. 9820 */ 9821 if (lun != NULL) 9822 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9823 lun->be_lun->lun_type; 9824 else 9825 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9826 9827 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9828 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9829 bl_ptr->max_cmp_write_len = 0xff; 9830 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9831 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9832 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9833 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9834 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9835 } 9836 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9837 9838 ctsio->scsi_status = SCSI_STATUS_OK; 9839 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9840 ctsio->be_move_done = ctl_config_move_done; 9841 ctl_datamove((union ctl_io *)ctsio); 9842 9843 return (CTL_RETVAL_COMPLETE); 9844} 9845 9846static int 9847ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 9848{ 9849 struct scsi_vpd_logical_block_prov *lbp_ptr; 9850 struct ctl_lun *lun; 9851 int bs; 9852 9853 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9854 bs = lun->be_lun->blocksize; 9855 9856 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 9857 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 9858 ctsio->kern_sg_entries = 0; 9859 9860 if (sizeof(*lbp_ptr) < alloc_len) { 9861 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 9862 ctsio->kern_data_len = sizeof(*lbp_ptr); 9863 ctsio->kern_total_len = sizeof(*lbp_ptr); 9864 } else { 9865 ctsio->residual = 0; 9866 ctsio->kern_data_len = alloc_len; 9867 ctsio->kern_total_len = alloc_len; 9868 } 9869 ctsio->kern_data_resid = 0; 9870 ctsio->kern_rel_offset = 0; 9871 ctsio->kern_sg_entries = 0; 9872 9873 /* 9874 * The control device is always connected. The disk device, on the 9875 * other hand, may not be online all the time. Need to change this 9876 * to figure out whether the disk device is actually online or not. 9877 */ 9878 if (lun != NULL) 9879 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9880 lun->be_lun->lun_type; 9881 else 9882 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9883 9884 lbp_ptr->page_code = SVPD_LBP; 9885 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 9886 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 9887 9888 ctsio->scsi_status = SCSI_STATUS_OK; 9889 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9890 ctsio->be_move_done = ctl_config_move_done; 9891 ctl_datamove((union ctl_io *)ctsio); 9892 9893 return (CTL_RETVAL_COMPLETE); 9894} 9895 9896static int 9897ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9898{ 9899 struct scsi_inquiry *cdb; 9900 struct ctl_lun *lun; 9901 int alloc_len, retval; 9902 9903 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9904 cdb = (struct scsi_inquiry *)ctsio->cdb; 9905 9906 retval = CTL_RETVAL_COMPLETE; 9907 9908 alloc_len = scsi_2btoul(cdb->length); 9909 9910 switch (cdb->page_code) { 9911 case SVPD_SUPPORTED_PAGES: 9912 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9913 break; 9914 case SVPD_UNIT_SERIAL_NUMBER: 9915 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9916 break; 9917 case SVPD_DEVICE_ID: 9918 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9919 break; 9920 case SVPD_BLOCK_LIMITS: 9921 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 9922 break; 9923 case SVPD_LBP: 9924 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 9925 break; 9926 default: 9927 ctl_set_invalid_field(ctsio, 9928 /*sks_valid*/ 1, 9929 /*command*/ 1, 9930 /*field*/ 2, 9931 /*bit_valid*/ 0, 9932 /*bit*/ 0); 9933 ctl_done((union ctl_io *)ctsio); 9934 retval = CTL_RETVAL_COMPLETE; 9935 break; 9936 } 9937 9938 return (retval); 9939} 9940 9941static int 9942ctl_inquiry_std(struct ctl_scsiio *ctsio) 9943{ 9944 struct scsi_inquiry_data *inq_ptr; 9945 struct scsi_inquiry *cdb; 9946 struct ctl_softc *ctl_softc; 9947 struct ctl_lun *lun; 9948 char *val; 9949 uint32_t alloc_len; 9950 int is_fc; 9951 9952 ctl_softc = control_softc; 9953 9954 /* 9955 * Figure out whether we're talking to a Fibre Channel port or not. 9956 * We treat the ioctl front end, and any SCSI adapters, as packetized 9957 * SCSI front ends. 9958 */ 9959 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9960 CTL_PORT_FC) 9961 is_fc = 0; 9962 else 9963 is_fc = 1; 9964 9965 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9966 cdb = (struct scsi_inquiry *)ctsio->cdb; 9967 alloc_len = scsi_2btoul(cdb->length); 9968 9969 /* 9970 * We malloc the full inquiry data size here and fill it 9971 * in. If the user only asks for less, we'll give him 9972 * that much. 9973 */ 9974 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9975 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9976 ctsio->kern_sg_entries = 0; 9977 ctsio->kern_data_resid = 0; 9978 ctsio->kern_rel_offset = 0; 9979 9980 if (sizeof(*inq_ptr) < alloc_len) { 9981 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9982 ctsio->kern_data_len = sizeof(*inq_ptr); 9983 ctsio->kern_total_len = sizeof(*inq_ptr); 9984 } else { 9985 ctsio->residual = 0; 9986 ctsio->kern_data_len = alloc_len; 9987 ctsio->kern_total_len = alloc_len; 9988 } 9989 9990 /* 9991 * If we have a LUN configured, report it as connected. Otherwise, 9992 * report that it is offline or no device is supported, depending 9993 * on the value of inquiry_pq_no_lun. 9994 * 9995 * According to the spec (SPC-4 r34), the peripheral qualifier 9996 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9997 * 9998 * "A peripheral device having the specified peripheral device type 9999 * is not connected to this logical unit. However, the device 10000 * server is capable of supporting the specified peripheral device 10001 * type on this logical unit." 10002 * 10003 * According to the same spec, the peripheral qualifier 10004 * SID_QUAL_BAD_LU (011b) is used in this scenario: 10005 * 10006 * "The device server is not capable of supporting a peripheral 10007 * device on this logical unit. For this peripheral qualifier the 10008 * peripheral device type shall be set to 1Fh. All other peripheral 10009 * device type values are reserved for this peripheral qualifier." 10010 * 10011 * Given the text, it would seem that we probably want to report that 10012 * the LUN is offline here. There is no LUN connected, but we can 10013 * support a LUN at the given LUN number. 10014 * 10015 * In the real world, though, it sounds like things are a little 10016 * different: 10017 * 10018 * - Linux, when presented with a LUN with the offline peripheral 10019 * qualifier, will create an sg driver instance for it. So when 10020 * you attach it to CTL, you wind up with a ton of sg driver 10021 * instances. (One for every LUN that Linux bothered to probe.) 10022 * Linux does this despite the fact that it issues a REPORT LUNs 10023 * to LUN 0 to get the inventory of supported LUNs. 10024 * 10025 * - There is other anecdotal evidence (from Emulex folks) about 10026 * arrays that use the offline peripheral qualifier for LUNs that 10027 * are on the "passive" path in an active/passive array. 10028 * 10029 * So the solution is provide a hopefully reasonable default 10030 * (return bad/no LUN) and allow the user to change the behavior 10031 * with a tunable/sysctl variable. 10032 */ 10033 if (lun != NULL) 10034 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 10035 lun->be_lun->lun_type; 10036 else if (ctl_softc->inquiry_pq_no_lun == 0) 10037 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 10038 else 10039 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 10040 10041 /* RMB in byte 2 is 0 */ 10042 inq_ptr->version = SCSI_REV_SPC3; 10043 10044 /* 10045 * According to SAM-3, even if a device only supports a single 10046 * level of LUN addressing, it should still set the HISUP bit: 10047 * 10048 * 4.9.1 Logical unit numbers overview 10049 * 10050 * All logical unit number formats described in this standard are 10051 * hierarchical in structure even when only a single level in that 10052 * hierarchy is used. The HISUP bit shall be set to one in the 10053 * standard INQUIRY data (see SPC-2) when any logical unit number 10054 * format described in this standard is used. Non-hierarchical 10055 * formats are outside the scope of this standard. 10056 * 10057 * Therefore we set the HiSup bit here. 10058 * 10059 * The reponse format is 2, per SPC-3. 10060 */ 10061 inq_ptr->response_format = SID_HiSup | 2; 10062 10063 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 10064 CTL_DEBUG_PRINT(("additional_length = %d\n", 10065 inq_ptr->additional_length)); 10066 10067 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 10068 /* 16 bit addressing */ 10069 if (is_fc == 0) 10070 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 10071 /* XXX set the SID_MultiP bit here if we're actually going to 10072 respond on multiple ports */ 10073 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 10074 10075 /* 16 bit data bus, synchronous transfers */ 10076 /* XXX these flags don't apply for FC */ 10077 if (is_fc == 0) 10078 inq_ptr->flags = SID_WBus16 | SID_Sync; 10079 /* 10080 * XXX KDM do we want to support tagged queueing on the control 10081 * device at all? 10082 */ 10083 if ((lun == NULL) 10084 || (lun->be_lun->lun_type != T_PROCESSOR)) 10085 inq_ptr->flags |= SID_CmdQue; 10086 /* 10087 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 10088 * We have 8 bytes for the vendor name, and 16 bytes for the device 10089 * name and 4 bytes for the revision. 10090 */ 10091 if (lun == NULL || (val = ctl_get_opt(&lun->be_lun->options, 10092 "vendor")) == NULL) { 10093 strcpy(inq_ptr->vendor, CTL_VENDOR); 10094 } else { 10095 memset(inq_ptr->vendor, ' ', sizeof(inq_ptr->vendor)); 10096 strncpy(inq_ptr->vendor, val, 10097 min(sizeof(inq_ptr->vendor), strlen(val))); 10098 } 10099 if (lun == NULL) { 10100 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10101 } else if ((val = ctl_get_opt(&lun->be_lun->options, "product")) == NULL) { 10102 switch (lun->be_lun->lun_type) { 10103 case T_DIRECT: 10104 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10105 break; 10106 case T_PROCESSOR: 10107 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 10108 break; 10109 default: 10110 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 10111 break; 10112 } 10113 } else { 10114 memset(inq_ptr->product, ' ', sizeof(inq_ptr->product)); 10115 strncpy(inq_ptr->product, val, 10116 min(sizeof(inq_ptr->product), strlen(val))); 10117 } 10118 10119 /* 10120 * XXX make this a macro somewhere so it automatically gets 10121 * incremented when we make changes. 10122 */ 10123 if (lun == NULL || (val = ctl_get_opt(&lun->be_lun->options, 10124 "revision")) == NULL) { 10125 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 10126 } else { 10127 memset(inq_ptr->revision, ' ', sizeof(inq_ptr->revision)); 10128 strncpy(inq_ptr->revision, val, 10129 min(sizeof(inq_ptr->revision), strlen(val))); 10130 } 10131 10132 /* 10133 * For parallel SCSI, we support double transition and single 10134 * transition clocking. We also support QAS (Quick Arbitration 10135 * and Selection) and Information Unit transfers on both the 10136 * control and array devices. 10137 */ 10138 if (is_fc == 0) 10139 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 10140 SID_SPI_IUS; 10141 10142 /* SAM-3 */ 10143 scsi_ulto2b(0x0060, inq_ptr->version1); 10144 /* SPC-3 (no version claimed) XXX should we claim a version? */ 10145 scsi_ulto2b(0x0300, inq_ptr->version2); 10146 if (is_fc) { 10147 /* FCP-2 ANSI INCITS.350:2003 */ 10148 scsi_ulto2b(0x0917, inq_ptr->version3); 10149 } else { 10150 /* SPI-4 ANSI INCITS.362:200x */ 10151 scsi_ulto2b(0x0B56, inq_ptr->version3); 10152 } 10153 10154 if (lun == NULL) { 10155 /* SBC-2 (no version claimed) XXX should we claim a version? */ 10156 scsi_ulto2b(0x0320, inq_ptr->version4); 10157 } else { 10158 switch (lun->be_lun->lun_type) { 10159 case T_DIRECT: 10160 /* 10161 * SBC-2 (no version claimed) XXX should we claim a 10162 * version? 10163 */ 10164 scsi_ulto2b(0x0320, inq_ptr->version4); 10165 break; 10166 case T_PROCESSOR: 10167 default: 10168 break; 10169 } 10170 } 10171 10172 ctsio->scsi_status = SCSI_STATUS_OK; 10173 if (ctsio->kern_data_len > 0) { 10174 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 10175 ctsio->be_move_done = ctl_config_move_done; 10176 ctl_datamove((union ctl_io *)ctsio); 10177 } else { 10178 ctsio->io_hdr.status = CTL_SUCCESS; 10179 ctl_done((union ctl_io *)ctsio); 10180 } 10181 10182 return (CTL_RETVAL_COMPLETE); 10183} 10184 10185int 10186ctl_inquiry(struct ctl_scsiio *ctsio) 10187{ 10188 struct scsi_inquiry *cdb; 10189 int retval; 10190 10191 cdb = (struct scsi_inquiry *)ctsio->cdb; 10192 10193 retval = 0; 10194 10195 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 10196 10197 /* 10198 * Right now, we don't support the CmdDt inquiry information. 10199 * This would be nice to support in the future. When we do 10200 * support it, we should change this test so that it checks to make 10201 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 10202 */ 10203#ifdef notyet 10204 if (((cdb->byte2 & SI_EVPD) 10205 && (cdb->byte2 & SI_CMDDT))) 10206#endif 10207 if (cdb->byte2 & SI_CMDDT) { 10208 /* 10209 * Point to the SI_CMDDT bit. We might change this 10210 * when we support SI_CMDDT, but since both bits would be 10211 * "wrong", this should probably just stay as-is then. 10212 */ 10213 ctl_set_invalid_field(ctsio, 10214 /*sks_valid*/ 1, 10215 /*command*/ 1, 10216 /*field*/ 1, 10217 /*bit_valid*/ 1, 10218 /*bit*/ 1); 10219 ctl_done((union ctl_io *)ctsio); 10220 return (CTL_RETVAL_COMPLETE); 10221 } 10222 if (cdb->byte2 & SI_EVPD) 10223 retval = ctl_inquiry_evpd(ctsio); 10224#ifdef notyet 10225 else if (cdb->byte2 & SI_CMDDT) 10226 retval = ctl_inquiry_cmddt(ctsio); 10227#endif 10228 else 10229 retval = ctl_inquiry_std(ctsio); 10230 10231 return (retval); 10232} 10233 10234/* 10235 * For known CDB types, parse the LBA and length. 10236 */ 10237static int 10238ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 10239{ 10240 if (io->io_hdr.io_type != CTL_IO_SCSI) 10241 return (1); 10242 10243 switch (io->scsiio.cdb[0]) { 10244 case COMPARE_AND_WRITE: { 10245 struct scsi_compare_and_write *cdb; 10246 10247 cdb = (struct scsi_compare_and_write *)io->scsiio.cdb; 10248 10249 *lba = scsi_8btou64(cdb->addr); 10250 *len = cdb->length; 10251 break; 10252 } 10253 case READ_6: 10254 case WRITE_6: { 10255 struct scsi_rw_6 *cdb; 10256 10257 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 10258 10259 *lba = scsi_3btoul(cdb->addr); 10260 /* only 5 bits are valid in the most significant address byte */ 10261 *lba &= 0x1fffff; 10262 *len = cdb->length; 10263 break; 10264 } 10265 case READ_10: 10266 case WRITE_10: { 10267 struct scsi_rw_10 *cdb; 10268 10269 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 10270 10271 *lba = scsi_4btoul(cdb->addr); 10272 *len = scsi_2btoul(cdb->length); 10273 break; 10274 } 10275 case WRITE_VERIFY_10: { 10276 struct scsi_write_verify_10 *cdb; 10277 10278 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 10279 10280 *lba = scsi_4btoul(cdb->addr); 10281 *len = scsi_2btoul(cdb->length); 10282 break; 10283 } 10284 case READ_12: 10285 case WRITE_12: { 10286 struct scsi_rw_12 *cdb; 10287 10288 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 10289 10290 *lba = scsi_4btoul(cdb->addr); 10291 *len = scsi_4btoul(cdb->length); 10292 break; 10293 } 10294 case WRITE_VERIFY_12: { 10295 struct scsi_write_verify_12 *cdb; 10296 10297 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 10298 10299 *lba = scsi_4btoul(cdb->addr); 10300 *len = scsi_4btoul(cdb->length); 10301 break; 10302 } 10303 case READ_16: 10304 case WRITE_16: { 10305 struct scsi_rw_16 *cdb; 10306 10307 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 10308 10309 *lba = scsi_8btou64(cdb->addr); 10310 *len = scsi_4btoul(cdb->length); 10311 break; 10312 } 10313 case WRITE_VERIFY_16: { 10314 struct scsi_write_verify_16 *cdb; 10315 10316 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 10317 10318 10319 *lba = scsi_8btou64(cdb->addr); 10320 *len = scsi_4btoul(cdb->length); 10321 break; 10322 } 10323 case WRITE_SAME_10: { 10324 struct scsi_write_same_10 *cdb; 10325 10326 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 10327 10328 *lba = scsi_4btoul(cdb->addr); 10329 *len = scsi_2btoul(cdb->length); 10330 break; 10331 } 10332 case WRITE_SAME_16: { 10333 struct scsi_write_same_16 *cdb; 10334 10335 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 10336 10337 *lba = scsi_8btou64(cdb->addr); 10338 *len = scsi_4btoul(cdb->length); 10339 break; 10340 } 10341 case VERIFY_10: { 10342 struct scsi_verify_10 *cdb; 10343 10344 cdb = (struct scsi_verify_10 *)io->scsiio.cdb; 10345 10346 *lba = scsi_4btoul(cdb->addr); 10347 *len = scsi_2btoul(cdb->length); 10348 break; 10349 } 10350 case VERIFY_12: { 10351 struct scsi_verify_12 *cdb; 10352 10353 cdb = (struct scsi_verify_12 *)io->scsiio.cdb; 10354 10355 *lba = scsi_4btoul(cdb->addr); 10356 *len = scsi_4btoul(cdb->length); 10357 break; 10358 } 10359 case VERIFY_16: { 10360 struct scsi_verify_16 *cdb; 10361 10362 cdb = (struct scsi_verify_16 *)io->scsiio.cdb; 10363 10364 *lba = scsi_8btou64(cdb->addr); 10365 *len = scsi_4btoul(cdb->length); 10366 break; 10367 } 10368 default: 10369 return (1); 10370 break; /* NOTREACHED */ 10371 } 10372 10373 return (0); 10374} 10375 10376static ctl_action 10377ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10378{ 10379 uint64_t endlba1, endlba2; 10380 10381 endlba1 = lba1 + len1 - 1; 10382 endlba2 = lba2 + len2 - 1; 10383 10384 if ((endlba1 < lba2) 10385 || (endlba2 < lba1)) 10386 return (CTL_ACTION_PASS); 10387 else 10388 return (CTL_ACTION_BLOCK); 10389} 10390 10391static ctl_action 10392ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10393{ 10394 uint64_t lba1, lba2; 10395 uint32_t len1, len2; 10396 int retval; 10397 10398 retval = ctl_get_lba_len(io1, &lba1, &len1); 10399 if (retval != 0) 10400 return (CTL_ACTION_ERROR); 10401 10402 retval = ctl_get_lba_len(io2, &lba2, &len2); 10403 if (retval != 0) 10404 return (CTL_ACTION_ERROR); 10405 10406 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10407} 10408 10409static ctl_action 10410ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10411{ 10412 const struct ctl_cmd_entry *pending_entry, *ooa_entry; 10413 ctl_serialize_action *serialize_row; 10414 10415 /* 10416 * The initiator attempted multiple untagged commands at the same 10417 * time. Can't do that. 10418 */ 10419 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10420 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10421 && ((pending_io->io_hdr.nexus.targ_port == 10422 ooa_io->io_hdr.nexus.targ_port) 10423 && (pending_io->io_hdr.nexus.initid.id == 10424 ooa_io->io_hdr.nexus.initid.id)) 10425 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10426 return (CTL_ACTION_OVERLAP); 10427 10428 /* 10429 * The initiator attempted to send multiple tagged commands with 10430 * the same ID. (It's fine if different initiators have the same 10431 * tag ID.) 10432 * 10433 * Even if all of those conditions are true, we don't kill the I/O 10434 * if the command ahead of us has been aborted. We won't end up 10435 * sending it to the FETD, and it's perfectly legal to resend a 10436 * command with the same tag number as long as the previous 10437 * instance of this tag number has been aborted somehow. 10438 */ 10439 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10440 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10441 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10442 && ((pending_io->io_hdr.nexus.targ_port == 10443 ooa_io->io_hdr.nexus.targ_port) 10444 && (pending_io->io_hdr.nexus.initid.id == 10445 ooa_io->io_hdr.nexus.initid.id)) 10446 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10447 return (CTL_ACTION_OVERLAP_TAG); 10448 10449 /* 10450 * If we get a head of queue tag, SAM-3 says that we should 10451 * immediately execute it. 10452 * 10453 * What happens if this command would normally block for some other 10454 * reason? e.g. a request sense with a head of queue tag 10455 * immediately after a write. Normally that would block, but this 10456 * will result in its getting executed immediately... 10457 * 10458 * We currently return "pass" instead of "skip", so we'll end up 10459 * going through the rest of the queue to check for overlapped tags. 10460 * 10461 * XXX KDM check for other types of blockage first?? 10462 */ 10463 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10464 return (CTL_ACTION_PASS); 10465 10466 /* 10467 * Ordered tags have to block until all items ahead of them 10468 * have completed. If we get called with an ordered tag, we always 10469 * block, if something else is ahead of us in the queue. 10470 */ 10471 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10472 return (CTL_ACTION_BLOCK); 10473 10474 /* 10475 * Simple tags get blocked until all head of queue and ordered tags 10476 * ahead of them have completed. I'm lumping untagged commands in 10477 * with simple tags here. XXX KDM is that the right thing to do? 10478 */ 10479 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10480 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10481 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10482 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10483 return (CTL_ACTION_BLOCK); 10484 10485 pending_entry = ctl_get_cmd_entry(&pending_io->scsiio); 10486 ooa_entry = ctl_get_cmd_entry(&ooa_io->scsiio); 10487 10488 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10489 10490 switch (serialize_row[pending_entry->seridx]) { 10491 case CTL_SER_BLOCK: 10492 return (CTL_ACTION_BLOCK); 10493 break; /* NOTREACHED */ 10494 case CTL_SER_EXTENT: 10495 return (ctl_extent_check(pending_io, ooa_io)); 10496 break; /* NOTREACHED */ 10497 case CTL_SER_PASS: 10498 return (CTL_ACTION_PASS); 10499 break; /* NOTREACHED */ 10500 case CTL_SER_SKIP: 10501 return (CTL_ACTION_SKIP); 10502 break; 10503 default: 10504 panic("invalid serialization value %d", 10505 serialize_row[pending_entry->seridx]); 10506 break; /* NOTREACHED */ 10507 } 10508 10509 return (CTL_ACTION_ERROR); 10510} 10511 10512/* 10513 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10514 * Assumptions: 10515 * - pending_io is generally either incoming, or on the blocked queue 10516 * - starting I/O is the I/O we want to start the check with. 10517 */ 10518static ctl_action 10519ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10520 union ctl_io *starting_io) 10521{ 10522 union ctl_io *ooa_io; 10523 ctl_action action; 10524 10525 mtx_assert(&lun->lun_lock, MA_OWNED); 10526 10527 /* 10528 * Run back along the OOA queue, starting with the current 10529 * blocked I/O and going through every I/O before it on the 10530 * queue. If starting_io is NULL, we'll just end up returning 10531 * CTL_ACTION_PASS. 10532 */ 10533 for (ooa_io = starting_io; ooa_io != NULL; 10534 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10535 ooa_links)){ 10536 10537 /* 10538 * This routine just checks to see whether 10539 * cur_blocked is blocked by ooa_io, which is ahead 10540 * of it in the queue. It doesn't queue/dequeue 10541 * cur_blocked. 10542 */ 10543 action = ctl_check_for_blockage(pending_io, ooa_io); 10544 switch (action) { 10545 case CTL_ACTION_BLOCK: 10546 case CTL_ACTION_OVERLAP: 10547 case CTL_ACTION_OVERLAP_TAG: 10548 case CTL_ACTION_SKIP: 10549 case CTL_ACTION_ERROR: 10550 return (action); 10551 break; /* NOTREACHED */ 10552 case CTL_ACTION_PASS: 10553 break; 10554 default: 10555 panic("invalid action %d", action); 10556 break; /* NOTREACHED */ 10557 } 10558 } 10559 10560 return (CTL_ACTION_PASS); 10561} 10562 10563/* 10564 * Assumptions: 10565 * - An I/O has just completed, and has been removed from the per-LUN OOA 10566 * queue, so some items on the blocked queue may now be unblocked. 10567 */ 10568static int 10569ctl_check_blocked(struct ctl_lun *lun) 10570{ 10571 union ctl_io *cur_blocked, *next_blocked; 10572 10573 mtx_assert(&lun->lun_lock, MA_OWNED); 10574 10575 /* 10576 * Run forward from the head of the blocked queue, checking each 10577 * entry against the I/Os prior to it on the OOA queue to see if 10578 * there is still any blockage. 10579 * 10580 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10581 * with our removing a variable on it while it is traversing the 10582 * list. 10583 */ 10584 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10585 cur_blocked != NULL; cur_blocked = next_blocked) { 10586 union ctl_io *prev_ooa; 10587 ctl_action action; 10588 10589 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10590 blocked_links); 10591 10592 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10593 ctl_ooaq, ooa_links); 10594 10595 /* 10596 * If cur_blocked happens to be the first item in the OOA 10597 * queue now, prev_ooa will be NULL, and the action 10598 * returned will just be CTL_ACTION_PASS. 10599 */ 10600 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10601 10602 switch (action) { 10603 case CTL_ACTION_BLOCK: 10604 /* Nothing to do here, still blocked */ 10605 break; 10606 case CTL_ACTION_OVERLAP: 10607 case CTL_ACTION_OVERLAP_TAG: 10608 /* 10609 * This shouldn't happen! In theory we've already 10610 * checked this command for overlap... 10611 */ 10612 break; 10613 case CTL_ACTION_PASS: 10614 case CTL_ACTION_SKIP: { 10615 struct ctl_softc *softc; 10616 const struct ctl_cmd_entry *entry; 10617 uint32_t initidx; 10618 int isc_retval; 10619 10620 /* 10621 * The skip case shouldn't happen, this transaction 10622 * should have never made it onto the blocked queue. 10623 */ 10624 /* 10625 * This I/O is no longer blocked, we can remove it 10626 * from the blocked queue. Since this is a TAILQ 10627 * (doubly linked list), we can do O(1) removals 10628 * from any place on the list. 10629 */ 10630 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10631 blocked_links); 10632 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10633 10634 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10635 /* 10636 * Need to send IO back to original side to 10637 * run 10638 */ 10639 union ctl_ha_msg msg_info; 10640 10641 msg_info.hdr.original_sc = 10642 cur_blocked->io_hdr.original_sc; 10643 msg_info.hdr.serializing_sc = cur_blocked; 10644 msg_info.hdr.msg_type = CTL_MSG_R2R; 10645 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10646 &msg_info, sizeof(msg_info), 0)) > 10647 CTL_HA_STATUS_SUCCESS) { 10648 printf("CTL:Check Blocked error from " 10649 "ctl_ha_msg_send %d\n", 10650 isc_retval); 10651 } 10652 break; 10653 } 10654 entry = ctl_get_cmd_entry(&cur_blocked->scsiio); 10655 softc = control_softc; 10656 10657 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10658 10659 /* 10660 * Check this I/O for LUN state changes that may 10661 * have happened while this command was blocked. 10662 * The LUN state may have been changed by a command 10663 * ahead of us in the queue, so we need to re-check 10664 * for any states that can be caused by SCSI 10665 * commands. 10666 */ 10667 if (ctl_scsiio_lun_check(softc, lun, entry, 10668 &cur_blocked->scsiio) == 0) { 10669 cur_blocked->io_hdr.flags |= 10670 CTL_FLAG_IS_WAS_ON_RTR; 10671 ctl_enqueue_rtr(cur_blocked); 10672 } else 10673 ctl_done(cur_blocked); 10674 break; 10675 } 10676 default: 10677 /* 10678 * This probably shouldn't happen -- we shouldn't 10679 * get CTL_ACTION_ERROR, or anything else. 10680 */ 10681 break; 10682 } 10683 } 10684 10685 return (CTL_RETVAL_COMPLETE); 10686} 10687 10688/* 10689 * This routine (with one exception) checks LUN flags that can be set by 10690 * commands ahead of us in the OOA queue. These flags have to be checked 10691 * when a command initially comes in, and when we pull a command off the 10692 * blocked queue and are preparing to execute it. The reason we have to 10693 * check these flags for commands on the blocked queue is that the LUN 10694 * state may have been changed by a command ahead of us while we're on the 10695 * blocked queue. 10696 * 10697 * Ordering is somewhat important with these checks, so please pay 10698 * careful attention to the placement of any new checks. 10699 */ 10700static int 10701ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10702 const struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10703{ 10704 int retval; 10705 10706 retval = 0; 10707 10708 mtx_assert(&lun->lun_lock, MA_OWNED); 10709 10710 /* 10711 * If this shelf is a secondary shelf controller, we have to reject 10712 * any media access commands. 10713 */ 10714#if 0 10715 /* No longer needed for HA */ 10716 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10717 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10718 ctl_set_lun_standby(ctsio); 10719 retval = 1; 10720 goto bailout; 10721 } 10722#endif 10723 10724 /* 10725 * Check for a reservation conflict. If this command isn't allowed 10726 * even on reserved LUNs, and if this initiator isn't the one who 10727 * reserved us, reject the command with a reservation conflict. 10728 */ 10729 if ((lun->flags & CTL_LUN_RESERVED) 10730 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10731 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10732 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10733 || (ctsio->io_hdr.nexus.targ_target.id != 10734 lun->rsv_nexus.targ_target.id)) { 10735 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10736 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10737 retval = 1; 10738 goto bailout; 10739 } 10740 } 10741 10742 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10743 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10744 uint32_t residx; 10745 10746 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10747 /* 10748 * if we aren't registered or it's a res holder type 10749 * reservation and this isn't the res holder then set a 10750 * conflict. 10751 * NOTE: Commands which might be allowed on write exclusive 10752 * type reservations are checked in the particular command 10753 * for a conflict. Read and SSU are the only ones. 10754 */ 10755 if (!lun->per_res[residx].registered 10756 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10757 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10758 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10759 retval = 1; 10760 goto bailout; 10761 } 10762 10763 } 10764 10765 if ((lun->flags & CTL_LUN_OFFLINE) 10766 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10767 ctl_set_lun_not_ready(ctsio); 10768 retval = 1; 10769 goto bailout; 10770 } 10771 10772 /* 10773 * If the LUN is stopped, see if this particular command is allowed 10774 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10775 */ 10776 if ((lun->flags & CTL_LUN_STOPPED) 10777 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10778 /* "Logical unit not ready, initializing cmd. required" */ 10779 ctl_set_lun_stopped(ctsio); 10780 retval = 1; 10781 goto bailout; 10782 } 10783 10784 if ((lun->flags & CTL_LUN_INOPERABLE) 10785 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10786 /* "Medium format corrupted" */ 10787 ctl_set_medium_format_corrupted(ctsio); 10788 retval = 1; 10789 goto bailout; 10790 } 10791 10792bailout: 10793 return (retval); 10794 10795} 10796 10797static void 10798ctl_failover_io(union ctl_io *io, int have_lock) 10799{ 10800 ctl_set_busy(&io->scsiio); 10801 ctl_done(io); 10802} 10803 10804static void 10805ctl_failover(void) 10806{ 10807 struct ctl_lun *lun; 10808 struct ctl_softc *ctl_softc; 10809 union ctl_io *next_io, *pending_io; 10810 union ctl_io *io; 10811 int lun_idx; 10812 int i; 10813 10814 ctl_softc = control_softc; 10815 10816 mtx_lock(&ctl_softc->ctl_lock); 10817 /* 10818 * Remove any cmds from the other SC from the rtr queue. These 10819 * will obviously only be for LUNs for which we're the primary. 10820 * We can't send status or get/send data for these commands. 10821 * Since they haven't been executed yet, we can just remove them. 10822 * We'll either abort them or delete them below, depending on 10823 * which HA mode we're in. 10824 */ 10825#ifdef notyet 10826 mtx_lock(&ctl_softc->queue_lock); 10827 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10828 io != NULL; io = next_io) { 10829 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10830 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10831 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10832 ctl_io_hdr, links); 10833 } 10834 mtx_unlock(&ctl_softc->queue_lock); 10835#endif 10836 10837 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10838 lun = ctl_softc->ctl_luns[lun_idx]; 10839 if (lun==NULL) 10840 continue; 10841 10842 /* 10843 * Processor LUNs are primary on both sides. 10844 * XXX will this always be true? 10845 */ 10846 if (lun->be_lun->lun_type == T_PROCESSOR) 10847 continue; 10848 10849 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10850 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10851 printf("FAILOVER: primary lun %d\n", lun_idx); 10852 /* 10853 * Remove all commands from the other SC. First from the 10854 * blocked queue then from the ooa queue. Once we have 10855 * removed them. Call ctl_check_blocked to see if there 10856 * is anything that can run. 10857 */ 10858 for (io = (union ctl_io *)TAILQ_FIRST( 10859 &lun->blocked_queue); io != NULL; io = next_io) { 10860 10861 next_io = (union ctl_io *)TAILQ_NEXT( 10862 &io->io_hdr, blocked_links); 10863 10864 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10865 TAILQ_REMOVE(&lun->blocked_queue, 10866 &io->io_hdr,blocked_links); 10867 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10868 TAILQ_REMOVE(&lun->ooa_queue, 10869 &io->io_hdr, ooa_links); 10870 10871 ctl_free_io(io); 10872 } 10873 } 10874 10875 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10876 io != NULL; io = next_io) { 10877 10878 next_io = (union ctl_io *)TAILQ_NEXT( 10879 &io->io_hdr, ooa_links); 10880 10881 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10882 10883 TAILQ_REMOVE(&lun->ooa_queue, 10884 &io->io_hdr, 10885 ooa_links); 10886 10887 ctl_free_io(io); 10888 } 10889 } 10890 ctl_check_blocked(lun); 10891 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10892 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10893 10894 printf("FAILOVER: primary lun %d\n", lun_idx); 10895 /* 10896 * Abort all commands from the other SC. We can't 10897 * send status back for them now. These should get 10898 * cleaned up when they are completed or come out 10899 * for a datamove operation. 10900 */ 10901 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10902 io != NULL; io = next_io) { 10903 next_io = (union ctl_io *)TAILQ_NEXT( 10904 &io->io_hdr, ooa_links); 10905 10906 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10907 io->io_hdr.flags |= CTL_FLAG_ABORT; 10908 } 10909 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10910 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10911 10912 printf("FAILOVER: secondary lun %d\n", lun_idx); 10913 10914 lun->flags |= CTL_LUN_PRIMARY_SC; 10915 10916 /* 10917 * We send all I/O that was sent to this controller 10918 * and redirected to the other side back with 10919 * busy status, and have the initiator retry it. 10920 * Figuring out how much data has been transferred, 10921 * etc. and picking up where we left off would be 10922 * very tricky. 10923 * 10924 * XXX KDM need to remove I/O from the blocked 10925 * queue as well! 10926 */ 10927 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10928 &lun->ooa_queue); pending_io != NULL; 10929 pending_io = next_io) { 10930 10931 next_io = (union ctl_io *)TAILQ_NEXT( 10932 &pending_io->io_hdr, ooa_links); 10933 10934 pending_io->io_hdr.flags &= 10935 ~CTL_FLAG_SENT_2OTHER_SC; 10936 10937 if (pending_io->io_hdr.flags & 10938 CTL_FLAG_IO_ACTIVE) { 10939 pending_io->io_hdr.flags |= 10940 CTL_FLAG_FAILOVER; 10941 } else { 10942 ctl_set_busy(&pending_io->scsiio); 10943 ctl_done(pending_io); 10944 } 10945 } 10946 10947 /* 10948 * Build Unit Attention 10949 */ 10950 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10951 lun->pending_sense[i].ua_pending |= 10952 CTL_UA_ASYM_ACC_CHANGE; 10953 } 10954 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10955 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10956 printf("FAILOVER: secondary lun %d\n", lun_idx); 10957 /* 10958 * if the first io on the OOA is not on the RtR queue 10959 * add it. 10960 */ 10961 lun->flags |= CTL_LUN_PRIMARY_SC; 10962 10963 pending_io = (union ctl_io *)TAILQ_FIRST( 10964 &lun->ooa_queue); 10965 if (pending_io==NULL) { 10966 printf("Nothing on OOA queue\n"); 10967 continue; 10968 } 10969 10970 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10971 if ((pending_io->io_hdr.flags & 10972 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10973 pending_io->io_hdr.flags |= 10974 CTL_FLAG_IS_WAS_ON_RTR; 10975 ctl_enqueue_rtr(pending_io); 10976 } 10977#if 0 10978 else 10979 { 10980 printf("Tag 0x%04x is running\n", 10981 pending_io->scsiio.tag_num); 10982 } 10983#endif 10984 10985 next_io = (union ctl_io *)TAILQ_NEXT( 10986 &pending_io->io_hdr, ooa_links); 10987 for (pending_io=next_io; pending_io != NULL; 10988 pending_io = next_io) { 10989 pending_io->io_hdr.flags &= 10990 ~CTL_FLAG_SENT_2OTHER_SC; 10991 next_io = (union ctl_io *)TAILQ_NEXT( 10992 &pending_io->io_hdr, ooa_links); 10993 if (pending_io->io_hdr.flags & 10994 CTL_FLAG_IS_WAS_ON_RTR) { 10995#if 0 10996 printf("Tag 0x%04x is running\n", 10997 pending_io->scsiio.tag_num); 10998#endif 10999 continue; 11000 } 11001 11002 switch (ctl_check_ooa(lun, pending_io, 11003 (union ctl_io *)TAILQ_PREV( 11004 &pending_io->io_hdr, ctl_ooaq, 11005 ooa_links))) { 11006 11007 case CTL_ACTION_BLOCK: 11008 TAILQ_INSERT_TAIL(&lun->blocked_queue, 11009 &pending_io->io_hdr, 11010 blocked_links); 11011 pending_io->io_hdr.flags |= 11012 CTL_FLAG_BLOCKED; 11013 break; 11014 case CTL_ACTION_PASS: 11015 case CTL_ACTION_SKIP: 11016 pending_io->io_hdr.flags |= 11017 CTL_FLAG_IS_WAS_ON_RTR; 11018 ctl_enqueue_rtr(pending_io); 11019 break; 11020 case CTL_ACTION_OVERLAP: 11021 ctl_set_overlapped_cmd( 11022 (struct ctl_scsiio *)pending_io); 11023 ctl_done(pending_io); 11024 break; 11025 case CTL_ACTION_OVERLAP_TAG: 11026 ctl_set_overlapped_tag( 11027 (struct ctl_scsiio *)pending_io, 11028 pending_io->scsiio.tag_num & 0xff); 11029 ctl_done(pending_io); 11030 break; 11031 case CTL_ACTION_ERROR: 11032 default: 11033 ctl_set_internal_failure( 11034 (struct ctl_scsiio *)pending_io, 11035 0, // sks_valid 11036 0); //retry count 11037 ctl_done(pending_io); 11038 break; 11039 } 11040 } 11041 11042 /* 11043 * Build Unit Attention 11044 */ 11045 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11046 lun->pending_sense[i].ua_pending |= 11047 CTL_UA_ASYM_ACC_CHANGE; 11048 } 11049 } else { 11050 panic("Unhandled HA mode failover, LUN flags = %#x, " 11051 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 11052 } 11053 } 11054 ctl_pause_rtr = 0; 11055 mtx_unlock(&ctl_softc->ctl_lock); 11056} 11057 11058static int 11059ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 11060{ 11061 struct ctl_lun *lun; 11062 const struct ctl_cmd_entry *entry; 11063 uint32_t initidx, targ_lun; 11064 int retval; 11065 11066 retval = 0; 11067 11068 lun = NULL; 11069 11070 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 11071 if ((targ_lun < CTL_MAX_LUNS) 11072 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 11073 lun = ctl_softc->ctl_luns[targ_lun]; 11074 /* 11075 * If the LUN is invalid, pretend that it doesn't exist. 11076 * It will go away as soon as all pending I/O has been 11077 * completed. 11078 */ 11079 if (lun->flags & CTL_LUN_DISABLED) { 11080 lun = NULL; 11081 } else { 11082 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 11083 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 11084 lun->be_lun; 11085 if (lun->be_lun->lun_type == T_PROCESSOR) { 11086 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 11087 } 11088 11089 /* 11090 * Every I/O goes into the OOA queue for a 11091 * particular LUN, and stays there until completion. 11092 */ 11093 mtx_lock(&lun->lun_lock); 11094 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, 11095 ooa_links); 11096 } 11097 } else { 11098 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 11099 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 11100 } 11101 11102 /* Get command entry and return error if it is unsuppotyed. */ 11103 entry = ctl_validate_command(ctsio); 11104 if (entry == NULL) { 11105 if (lun) 11106 mtx_unlock(&lun->lun_lock); 11107 return (retval); 11108 } 11109 11110 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 11111 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 11112 11113 /* 11114 * Check to see whether we can send this command to LUNs that don't 11115 * exist. This should pretty much only be the case for inquiry 11116 * and request sense. Further checks, below, really require having 11117 * a LUN, so we can't really check the command anymore. Just put 11118 * it on the rtr queue. 11119 */ 11120 if (lun == NULL) { 11121 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) { 11122 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11123 ctl_enqueue_rtr((union ctl_io *)ctsio); 11124 return (retval); 11125 } 11126 11127 ctl_set_unsupported_lun(ctsio); 11128 ctl_done((union ctl_io *)ctsio); 11129 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 11130 return (retval); 11131 } else { 11132 /* 11133 * Make sure we support this particular command on this LUN. 11134 * e.g., we don't support writes to the control LUN. 11135 */ 11136 if (!ctl_cmd_applicable(lun->be_lun->lun_type, entry)) { 11137 mtx_unlock(&lun->lun_lock); 11138 ctl_set_invalid_opcode(ctsio); 11139 ctl_done((union ctl_io *)ctsio); 11140 return (retval); 11141 } 11142 } 11143 11144 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 11145 11146 /* 11147 * If we've got a request sense, it'll clear the contingent 11148 * allegiance condition. Otherwise, if we have a CA condition for 11149 * this initiator, clear it, because it sent down a command other 11150 * than request sense. 11151 */ 11152 if ((ctsio->cdb[0] != REQUEST_SENSE) 11153 && (ctl_is_set(lun->have_ca, initidx))) 11154 ctl_clear_mask(lun->have_ca, initidx); 11155 11156 /* 11157 * If the command has this flag set, it handles its own unit 11158 * attention reporting, we shouldn't do anything. Otherwise we 11159 * check for any pending unit attentions, and send them back to the 11160 * initiator. We only do this when a command initially comes in, 11161 * not when we pull it off the blocked queue. 11162 * 11163 * According to SAM-3, section 5.3.2, the order that things get 11164 * presented back to the host is basically unit attentions caused 11165 * by some sort of reset event, busy status, reservation conflicts 11166 * or task set full, and finally any other status. 11167 * 11168 * One issue here is that some of the unit attentions we report 11169 * don't fall into the "reset" category (e.g. "reported luns data 11170 * has changed"). So reporting it here, before the reservation 11171 * check, may be technically wrong. I guess the only thing to do 11172 * would be to check for and report the reset events here, and then 11173 * check for the other unit attention types after we check for a 11174 * reservation conflict. 11175 * 11176 * XXX KDM need to fix this 11177 */ 11178 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 11179 ctl_ua_type ua_type; 11180 11181 ua_type = lun->pending_sense[initidx].ua_pending; 11182 if (ua_type != CTL_UA_NONE) { 11183 scsi_sense_data_type sense_format; 11184 11185 if (lun != NULL) 11186 sense_format = (lun->flags & 11187 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 11188 SSD_TYPE_FIXED; 11189 else 11190 sense_format = SSD_TYPE_FIXED; 11191 11192 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 11193 sense_format); 11194 if (ua_type != CTL_UA_NONE) { 11195 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 11196 ctsio->io_hdr.status = CTL_SCSI_ERROR | 11197 CTL_AUTOSENSE; 11198 ctsio->sense_len = SSD_FULL_SIZE; 11199 lun->pending_sense[initidx].ua_pending &= 11200 ~ua_type; 11201 mtx_unlock(&lun->lun_lock); 11202 ctl_done((union ctl_io *)ctsio); 11203 return (retval); 11204 } 11205 } 11206 } 11207 11208 11209 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 11210 mtx_unlock(&lun->lun_lock); 11211 ctl_done((union ctl_io *)ctsio); 11212 return (retval); 11213 } 11214 11215 /* 11216 * XXX CHD this is where we want to send IO to other side if 11217 * this LUN is secondary on this SC. We will need to make a copy 11218 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 11219 * the copy we send as FROM_OTHER. 11220 * We also need to stuff the address of the original IO so we can 11221 * find it easily. Something similar will need be done on the other 11222 * side so when we are done we can find the copy. 11223 */ 11224 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 11225 union ctl_ha_msg msg_info; 11226 int isc_retval; 11227 11228 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11229 11230 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 11231 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 11232#if 0 11233 printf("1. ctsio %p\n", ctsio); 11234#endif 11235 msg_info.hdr.serializing_sc = NULL; 11236 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 11237 msg_info.scsi.tag_num = ctsio->tag_num; 11238 msg_info.scsi.tag_type = ctsio->tag_type; 11239 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 11240 11241 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11242 11243 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11244 (void *)&msg_info, sizeof(msg_info), 0)) > 11245 CTL_HA_STATUS_SUCCESS) { 11246 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 11247 isc_retval); 11248 printf("CTL:opcode is %x\n", ctsio->cdb[0]); 11249 } else { 11250#if 0 11251 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 11252#endif 11253 } 11254 11255 /* 11256 * XXX KDM this I/O is off the incoming queue, but hasn't 11257 * been inserted on any other queue. We may need to come 11258 * up with a holding queue while we wait for serialization 11259 * so that we have an idea of what we're waiting for from 11260 * the other side. 11261 */ 11262 mtx_unlock(&lun->lun_lock); 11263 return (retval); 11264 } 11265 11266 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 11267 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 11268 ctl_ooaq, ooa_links))) { 11269 case CTL_ACTION_BLOCK: 11270 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 11271 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 11272 blocked_links); 11273 mtx_unlock(&lun->lun_lock); 11274 return (retval); 11275 case CTL_ACTION_PASS: 11276 case CTL_ACTION_SKIP: 11277 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11278 mtx_unlock(&lun->lun_lock); 11279 ctl_enqueue_rtr((union ctl_io *)ctsio); 11280 break; 11281 case CTL_ACTION_OVERLAP: 11282 mtx_unlock(&lun->lun_lock); 11283 ctl_set_overlapped_cmd(ctsio); 11284 ctl_done((union ctl_io *)ctsio); 11285 break; 11286 case CTL_ACTION_OVERLAP_TAG: 11287 mtx_unlock(&lun->lun_lock); 11288 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 11289 ctl_done((union ctl_io *)ctsio); 11290 break; 11291 case CTL_ACTION_ERROR: 11292 default: 11293 mtx_unlock(&lun->lun_lock); 11294 ctl_set_internal_failure(ctsio, 11295 /*sks_valid*/ 0, 11296 /*retry_count*/ 0); 11297 ctl_done((union ctl_io *)ctsio); 11298 break; 11299 } 11300 return (retval); 11301} 11302 11303const struct ctl_cmd_entry * 11304ctl_get_cmd_entry(struct ctl_scsiio *ctsio) 11305{ 11306 const struct ctl_cmd_entry *entry; 11307 int service_action; 11308 11309 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11310 if (entry->flags & CTL_CMD_FLAG_SA5) { 11311 service_action = ctsio->cdb[1] & SERVICE_ACTION_MASK; 11312 entry = &((const struct ctl_cmd_entry *) 11313 entry->execute)[service_action]; 11314 } 11315 return (entry); 11316} 11317 11318const struct ctl_cmd_entry * 11319ctl_validate_command(struct ctl_scsiio *ctsio) 11320{ 11321 const struct ctl_cmd_entry *entry; 11322 int i; 11323 uint8_t diff; 11324 11325 entry = ctl_get_cmd_entry(ctsio); 11326 if (entry->execute == NULL) { 11327 ctl_set_invalid_opcode(ctsio); 11328 ctl_done((union ctl_io *)ctsio); 11329 return (NULL); 11330 } 11331 KASSERT(entry->length > 0, 11332 ("Not defined length for command 0x%02x/0x%02x", 11333 ctsio->cdb[0], ctsio->cdb[1])); 11334 for (i = 1; i < entry->length; i++) { 11335 diff = ctsio->cdb[i] & ~entry->usage[i - 1]; 11336 if (diff == 0) 11337 continue; 11338 ctl_set_invalid_field(ctsio, 11339 /*sks_valid*/ 1, 11340 /*command*/ 1, 11341 /*field*/ i, 11342 /*bit_valid*/ 1, 11343 /*bit*/ fls(diff) - 1); 11344 ctl_done((union ctl_io *)ctsio); 11345 return (NULL); 11346 } 11347 return (entry); 11348} 11349 11350static int 11351ctl_cmd_applicable(uint8_t lun_type, const struct ctl_cmd_entry *entry) 11352{ 11353 11354 switch (lun_type) { 11355 case T_PROCESSOR: 11356 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) && 11357 ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) == 0)) 11358 return (0); 11359 break; 11360 case T_DIRECT: 11361 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) && 11362 ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) == 0)) 11363 return (0); 11364 break; 11365 default: 11366 return (0); 11367 } 11368 return (1); 11369} 11370 11371static int 11372ctl_scsiio(struct ctl_scsiio *ctsio) 11373{ 11374 int retval; 11375 const struct ctl_cmd_entry *entry; 11376 11377 retval = CTL_RETVAL_COMPLETE; 11378 11379 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 11380 11381 entry = ctl_get_cmd_entry(ctsio); 11382 11383 /* 11384 * If this I/O has been aborted, just send it straight to 11385 * ctl_done() without executing it. 11386 */ 11387 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11388 ctl_done((union ctl_io *)ctsio); 11389 goto bailout; 11390 } 11391 11392 /* 11393 * All the checks should have been handled by ctl_scsiio_precheck(). 11394 * We should be clear now to just execute the I/O. 11395 */ 11396 retval = entry->execute(ctsio); 11397 11398bailout: 11399 return (retval); 11400} 11401 11402/* 11403 * Since we only implement one target right now, a bus reset simply resets 11404 * our single target. 11405 */ 11406static int 11407ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11408{ 11409 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11410} 11411 11412static int 11413ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11414 ctl_ua_type ua_type) 11415{ 11416 struct ctl_lun *lun; 11417 int retval; 11418 11419 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11420 union ctl_ha_msg msg_info; 11421 11422 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11423 msg_info.hdr.nexus = io->io_hdr.nexus; 11424 if (ua_type==CTL_UA_TARG_RESET) 11425 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11426 else 11427 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11428 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11429 msg_info.hdr.original_sc = NULL; 11430 msg_info.hdr.serializing_sc = NULL; 11431 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11432 (void *)&msg_info, sizeof(msg_info), 0)) { 11433 } 11434 } 11435 retval = 0; 11436 11437 mtx_lock(&ctl_softc->ctl_lock); 11438 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11439 retval += ctl_lun_reset(lun, io, ua_type); 11440 mtx_unlock(&ctl_softc->ctl_lock); 11441 11442 return (retval); 11443} 11444 11445/* 11446 * The LUN should always be set. The I/O is optional, and is used to 11447 * distinguish between I/Os sent by this initiator, and by other 11448 * initiators. We set unit attention for initiators other than this one. 11449 * SAM-3 is vague on this point. It does say that a unit attention should 11450 * be established for other initiators when a LUN is reset (see section 11451 * 5.7.3), but it doesn't specifically say that the unit attention should 11452 * be established for this particular initiator when a LUN is reset. Here 11453 * is the relevant text, from SAM-3 rev 8: 11454 * 11455 * 5.7.2 When a SCSI initiator port aborts its own tasks 11456 * 11457 * When a SCSI initiator port causes its own task(s) to be aborted, no 11458 * notification that the task(s) have been aborted shall be returned to 11459 * the SCSI initiator port other than the completion response for the 11460 * command or task management function action that caused the task(s) to 11461 * be aborted and notification(s) associated with related effects of the 11462 * action (e.g., a reset unit attention condition). 11463 * 11464 * XXX KDM for now, we're setting unit attention for all initiators. 11465 */ 11466static int 11467ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11468{ 11469 union ctl_io *xio; 11470#if 0 11471 uint32_t initindex; 11472#endif 11473 int i; 11474 11475 mtx_lock(&lun->lun_lock); 11476 /* 11477 * Run through the OOA queue and abort each I/O. 11478 */ 11479#if 0 11480 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11481#endif 11482 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11483 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11484 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11485 } 11486 11487 /* 11488 * This version sets unit attention for every 11489 */ 11490#if 0 11491 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11492 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11493 if (initindex == i) 11494 continue; 11495 lun->pending_sense[i].ua_pending |= ua_type; 11496 } 11497#endif 11498 11499 /* 11500 * A reset (any kind, really) clears reservations established with 11501 * RESERVE/RELEASE. It does not clear reservations established 11502 * with PERSISTENT RESERVE OUT, but we don't support that at the 11503 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11504 * reservations made with the RESERVE/RELEASE commands, because 11505 * those commands are obsolete in SPC-3. 11506 */ 11507 lun->flags &= ~CTL_LUN_RESERVED; 11508 11509 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11510 ctl_clear_mask(lun->have_ca, i); 11511 lun->pending_sense[i].ua_pending |= ua_type; 11512 } 11513 mtx_lock(&lun->lun_lock); 11514 11515 return (0); 11516} 11517 11518static int 11519ctl_abort_task(union ctl_io *io) 11520{ 11521 union ctl_io *xio; 11522 struct ctl_lun *lun; 11523 struct ctl_softc *ctl_softc; 11524#if 0 11525 struct sbuf sb; 11526 char printbuf[128]; 11527#endif 11528 int found; 11529 uint32_t targ_lun; 11530 11531 ctl_softc = control_softc; 11532 found = 0; 11533 11534 /* 11535 * Look up the LUN. 11536 */ 11537 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11538 mtx_lock(&ctl_softc->ctl_lock); 11539 if ((targ_lun < CTL_MAX_LUNS) 11540 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11541 lun = ctl_softc->ctl_luns[targ_lun]; 11542 else { 11543 mtx_unlock(&ctl_softc->ctl_lock); 11544 goto bailout; 11545 } 11546 11547#if 0 11548 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11549 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11550#endif 11551 11552 mtx_lock(&lun->lun_lock); 11553 mtx_unlock(&ctl_softc->ctl_lock); 11554 /* 11555 * Run through the OOA queue and attempt to find the given I/O. 11556 * The target port, initiator ID, tag type and tag number have to 11557 * match the values that we got from the initiator. If we have an 11558 * untagged command to abort, simply abort the first untagged command 11559 * we come to. We only allow one untagged command at a time of course. 11560 */ 11561#if 0 11562 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11563#endif 11564 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11565 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11566#if 0 11567 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11568 11569 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11570 lun->lun, xio->scsiio.tag_num, 11571 xio->scsiio.tag_type, 11572 (xio->io_hdr.blocked_links.tqe_prev 11573 == NULL) ? "" : " BLOCKED", 11574 (xio->io_hdr.flags & 11575 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11576 (xio->io_hdr.flags & 11577 CTL_FLAG_ABORT) ? " ABORT" : "", 11578 (xio->io_hdr.flags & 11579 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11580 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11581 sbuf_finish(&sb); 11582 printf("%s\n", sbuf_data(&sb)); 11583#endif 11584 11585 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11586 && (xio->io_hdr.nexus.initid.id == 11587 io->io_hdr.nexus.initid.id)) { 11588 /* 11589 * If the abort says that the task is untagged, the 11590 * task in the queue must be untagged. Otherwise, 11591 * we just check to see whether the tag numbers 11592 * match. This is because the QLogic firmware 11593 * doesn't pass back the tag type in an abort 11594 * request. 11595 */ 11596#if 0 11597 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11598 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11599 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11600#endif 11601 /* 11602 * XXX KDM we've got problems with FC, because it 11603 * doesn't send down a tag type with aborts. So we 11604 * can only really go by the tag number... 11605 * This may cause problems with parallel SCSI. 11606 * Need to figure that out!! 11607 */ 11608 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11609 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11610 found = 1; 11611 if ((io->io_hdr.flags & 11612 CTL_FLAG_FROM_OTHER_SC) == 0 && 11613 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11614 union ctl_ha_msg msg_info; 11615 11616 io->io_hdr.flags |= 11617 CTL_FLAG_SENT_2OTHER_SC; 11618 msg_info.hdr.nexus = io->io_hdr.nexus; 11619 msg_info.task.task_action = 11620 CTL_TASK_ABORT_TASK; 11621 msg_info.task.tag_num = 11622 io->taskio.tag_num; 11623 msg_info.task.tag_type = 11624 io->taskio.tag_type; 11625 msg_info.hdr.msg_type = 11626 CTL_MSG_MANAGE_TASKS; 11627 msg_info.hdr.original_sc = NULL; 11628 msg_info.hdr.serializing_sc = NULL; 11629#if 0 11630 printf("Sent Abort to other side\n"); 11631#endif 11632 if (CTL_HA_STATUS_SUCCESS != 11633 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11634 (void *)&msg_info, 11635 sizeof(msg_info), 0)) { 11636 } 11637 } 11638#if 0 11639 printf("ctl_abort_task: found I/O to abort\n"); 11640#endif 11641 break; 11642 } 11643 } 11644 } 11645 mtx_unlock(&lun->lun_lock); 11646 11647bailout: 11648 11649 if (found == 0) { 11650 /* 11651 * This isn't really an error. It's entirely possible for 11652 * the abort and command completion to cross on the wire. 11653 * This is more of an informative/diagnostic error. 11654 */ 11655#if 0 11656 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11657 "%d:%d:%d:%d tag %d type %d\n", 11658 io->io_hdr.nexus.initid.id, 11659 io->io_hdr.nexus.targ_port, 11660 io->io_hdr.nexus.targ_target.id, 11661 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11662 io->taskio.tag_type); 11663#endif 11664 return (1); 11665 } else 11666 return (0); 11667} 11668 11669/* 11670 * This routine cannot block! It must be callable from an interrupt 11671 * handler as well as from the work thread. 11672 */ 11673static void 11674ctl_run_task(union ctl_io *io) 11675{ 11676 struct ctl_softc *ctl_softc; 11677 int retval; 11678 const char *task_desc; 11679 11680 CTL_DEBUG_PRINT(("ctl_run_task\n")); 11681 11682 ctl_softc = control_softc; 11683 retval = 0; 11684 11685 KASSERT(io->io_hdr.io_type == CTL_IO_TASK, 11686 ("ctl_run_task: Unextected io_type %d\n", 11687 io->io_hdr.io_type)); 11688 11689 task_desc = ctl_scsi_task_string(&io->taskio); 11690 if (task_desc != NULL) { 11691#ifdef NEEDTOPORT 11692 csevent_log(CSC_CTL | CSC_SHELF_SW | 11693 CTL_TASK_REPORT, 11694 csevent_LogType_Trace, 11695 csevent_Severity_Information, 11696 csevent_AlertLevel_Green, 11697 csevent_FRU_Firmware, 11698 csevent_FRU_Unknown, 11699 "CTL: received task: %s",task_desc); 11700#endif 11701 } else { 11702#ifdef NEEDTOPORT 11703 csevent_log(CSC_CTL | CSC_SHELF_SW | 11704 CTL_TASK_REPORT, 11705 csevent_LogType_Trace, 11706 csevent_Severity_Information, 11707 csevent_AlertLevel_Green, 11708 csevent_FRU_Firmware, 11709 csevent_FRU_Unknown, 11710 "CTL: received unknown task " 11711 "type: %d (%#x)", 11712 io->taskio.task_action, 11713 io->taskio.task_action); 11714#endif 11715 } 11716 switch (io->taskio.task_action) { 11717 case CTL_TASK_ABORT_TASK: 11718 retval = ctl_abort_task(io); 11719 break; 11720 case CTL_TASK_ABORT_TASK_SET: 11721 break; 11722 case CTL_TASK_CLEAR_ACA: 11723 break; 11724 case CTL_TASK_CLEAR_TASK_SET: 11725 break; 11726 case CTL_TASK_LUN_RESET: { 11727 struct ctl_lun *lun; 11728 uint32_t targ_lun; 11729 int retval; 11730 11731 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11732 mtx_lock(&ctl_softc->ctl_lock); 11733 if ((targ_lun < CTL_MAX_LUNS) 11734 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11735 lun = ctl_softc->ctl_luns[targ_lun]; 11736 else { 11737 mtx_unlock(&ctl_softc->ctl_lock); 11738 retval = 1; 11739 break; 11740 } 11741 11742 if (!(io->io_hdr.flags & 11743 CTL_FLAG_FROM_OTHER_SC)) { 11744 union ctl_ha_msg msg_info; 11745 11746 io->io_hdr.flags |= 11747 CTL_FLAG_SENT_2OTHER_SC; 11748 msg_info.hdr.msg_type = 11749 CTL_MSG_MANAGE_TASKS; 11750 msg_info.hdr.nexus = io->io_hdr.nexus; 11751 msg_info.task.task_action = 11752 CTL_TASK_LUN_RESET; 11753 msg_info.hdr.original_sc = NULL; 11754 msg_info.hdr.serializing_sc = NULL; 11755 if (CTL_HA_STATUS_SUCCESS != 11756 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11757 (void *)&msg_info, 11758 sizeof(msg_info), 0)) { 11759 } 11760 } 11761 11762 retval = ctl_lun_reset(lun, io, 11763 CTL_UA_LUN_RESET); 11764 mtx_unlock(&ctl_softc->ctl_lock); 11765 break; 11766 } 11767 case CTL_TASK_TARGET_RESET: 11768 retval = ctl_target_reset(ctl_softc, io, CTL_UA_TARG_RESET); 11769 break; 11770 case CTL_TASK_BUS_RESET: 11771 retval = ctl_bus_reset(ctl_softc, io); 11772 break; 11773 case CTL_TASK_PORT_LOGIN: 11774 break; 11775 case CTL_TASK_PORT_LOGOUT: 11776 break; 11777 default: 11778 printf("ctl_run_task: got unknown task management event %d\n", 11779 io->taskio.task_action); 11780 break; 11781 } 11782 if (retval == 0) 11783 io->io_hdr.status = CTL_SUCCESS; 11784 else 11785 io->io_hdr.status = CTL_ERROR; 11786 11787 /* 11788 * This will queue this I/O to the done queue, but the 11789 * work thread won't be able to process it until we 11790 * return and the lock is released. 11791 */ 11792 ctl_done(io); 11793} 11794 11795/* 11796 * For HA operation. Handle commands that come in from the other 11797 * controller. 11798 */ 11799static void 11800ctl_handle_isc(union ctl_io *io) 11801{ 11802 int free_io; 11803 struct ctl_lun *lun; 11804 struct ctl_softc *ctl_softc; 11805 uint32_t targ_lun; 11806 11807 ctl_softc = control_softc; 11808 11809 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11810 lun = ctl_softc->ctl_luns[targ_lun]; 11811 11812 switch (io->io_hdr.msg_type) { 11813 case CTL_MSG_SERIALIZE: 11814 free_io = ctl_serialize_other_sc_cmd(&io->scsiio); 11815 break; 11816 case CTL_MSG_R2R: { 11817 const struct ctl_cmd_entry *entry; 11818 11819 /* 11820 * This is only used in SER_ONLY mode. 11821 */ 11822 free_io = 0; 11823 entry = ctl_get_cmd_entry(&io->scsiio); 11824 mtx_lock(&lun->lun_lock); 11825 if (ctl_scsiio_lun_check(ctl_softc, lun, 11826 entry, (struct ctl_scsiio *)io) != 0) { 11827 mtx_unlock(&lun->lun_lock); 11828 ctl_done(io); 11829 break; 11830 } 11831 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11832 mtx_unlock(&lun->lun_lock); 11833 ctl_enqueue_rtr(io); 11834 break; 11835 } 11836 case CTL_MSG_FINISH_IO: 11837 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11838 free_io = 0; 11839 ctl_done(io); 11840 } else { 11841 free_io = 1; 11842 mtx_lock(&lun->lun_lock); 11843 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11844 ooa_links); 11845 ctl_check_blocked(lun); 11846 mtx_unlock(&lun->lun_lock); 11847 } 11848 break; 11849 case CTL_MSG_PERS_ACTION: 11850 ctl_hndl_per_res_out_on_other_sc( 11851 (union ctl_ha_msg *)&io->presio.pr_msg); 11852 free_io = 1; 11853 break; 11854 case CTL_MSG_BAD_JUJU: 11855 free_io = 0; 11856 ctl_done(io); 11857 break; 11858 case CTL_MSG_DATAMOVE: 11859 /* Only used in XFER mode */ 11860 free_io = 0; 11861 ctl_datamove_remote(io); 11862 break; 11863 case CTL_MSG_DATAMOVE_DONE: 11864 /* Only used in XFER mode */ 11865 free_io = 0; 11866 io->scsiio.be_move_done(io); 11867 break; 11868 default: 11869 free_io = 1; 11870 printf("%s: Invalid message type %d\n", 11871 __func__, io->io_hdr.msg_type); 11872 break; 11873 } 11874 if (free_io) 11875 ctl_free_io(io); 11876 11877} 11878 11879 11880/* 11881 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11882 * there is no match. 11883 */ 11884static ctl_lun_error_pattern 11885ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11886{ 11887 const struct ctl_cmd_entry *entry; 11888 ctl_lun_error_pattern filtered_pattern, pattern; 11889 11890 pattern = desc->error_pattern; 11891 11892 /* 11893 * XXX KDM we need more data passed into this function to match a 11894 * custom pattern, and we actually need to implement custom pattern 11895 * matching. 11896 */ 11897 if (pattern & CTL_LUN_PAT_CMD) 11898 return (CTL_LUN_PAT_CMD); 11899 11900 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11901 return (CTL_LUN_PAT_ANY); 11902 11903 entry = ctl_get_cmd_entry(ctsio); 11904 11905 filtered_pattern = entry->pattern & pattern; 11906 11907 /* 11908 * If the user requested specific flags in the pattern (e.g. 11909 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11910 * flags. 11911 * 11912 * If the user did not specify any flags, it doesn't matter whether 11913 * or not the command supports the flags. 11914 */ 11915 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11916 (pattern & ~CTL_LUN_PAT_MASK)) 11917 return (CTL_LUN_PAT_NONE); 11918 11919 /* 11920 * If the user asked for a range check, see if the requested LBA 11921 * range overlaps with this command's LBA range. 11922 */ 11923 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11924 uint64_t lba1; 11925 uint32_t len1; 11926 ctl_action action; 11927 int retval; 11928 11929 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11930 if (retval != 0) 11931 return (CTL_LUN_PAT_NONE); 11932 11933 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11934 desc->lba_range.len); 11935 /* 11936 * A "pass" means that the LBA ranges don't overlap, so 11937 * this doesn't match the user's range criteria. 11938 */ 11939 if (action == CTL_ACTION_PASS) 11940 return (CTL_LUN_PAT_NONE); 11941 } 11942 11943 return (filtered_pattern); 11944} 11945 11946static void 11947ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11948{ 11949 struct ctl_error_desc *desc, *desc2; 11950 11951 mtx_assert(&lun->lun_lock, MA_OWNED); 11952 11953 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11954 ctl_lun_error_pattern pattern; 11955 /* 11956 * Check to see whether this particular command matches 11957 * the pattern in the descriptor. 11958 */ 11959 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11960 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11961 continue; 11962 11963 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11964 case CTL_LUN_INJ_ABORTED: 11965 ctl_set_aborted(&io->scsiio); 11966 break; 11967 case CTL_LUN_INJ_MEDIUM_ERR: 11968 ctl_set_medium_error(&io->scsiio); 11969 break; 11970 case CTL_LUN_INJ_UA: 11971 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11972 * OCCURRED */ 11973 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11974 break; 11975 case CTL_LUN_INJ_CUSTOM: 11976 /* 11977 * We're assuming the user knows what he is doing. 11978 * Just copy the sense information without doing 11979 * checks. 11980 */ 11981 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11982 ctl_min(sizeof(desc->custom_sense), 11983 sizeof(io->scsiio.sense_data))); 11984 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11985 io->scsiio.sense_len = SSD_FULL_SIZE; 11986 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11987 break; 11988 case CTL_LUN_INJ_NONE: 11989 default: 11990 /* 11991 * If this is an error injection type we don't know 11992 * about, clear the continuous flag (if it is set) 11993 * so it will get deleted below. 11994 */ 11995 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11996 break; 11997 } 11998 /* 11999 * By default, each error injection action is a one-shot 12000 */ 12001 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 12002 continue; 12003 12004 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 12005 12006 free(desc, M_CTL); 12007 } 12008} 12009 12010#ifdef CTL_IO_DELAY 12011static void 12012ctl_datamove_timer_wakeup(void *arg) 12013{ 12014 union ctl_io *io; 12015 12016 io = (union ctl_io *)arg; 12017 12018 ctl_datamove(io); 12019} 12020#endif /* CTL_IO_DELAY */ 12021 12022void 12023ctl_datamove(union ctl_io *io) 12024{ 12025 void (*fe_datamove)(union ctl_io *io); 12026 12027 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 12028 12029 CTL_DEBUG_PRINT(("ctl_datamove\n")); 12030 12031#ifdef CTL_TIME_IO 12032 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12033 char str[256]; 12034 char path_str[64]; 12035 struct sbuf sb; 12036 12037 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12038 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12039 12040 sbuf_cat(&sb, path_str); 12041 switch (io->io_hdr.io_type) { 12042 case CTL_IO_SCSI: 12043 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12044 sbuf_printf(&sb, "\n"); 12045 sbuf_cat(&sb, path_str); 12046 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12047 io->scsiio.tag_num, io->scsiio.tag_type); 12048 break; 12049 case CTL_IO_TASK: 12050 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12051 "Tag Type: %d\n", io->taskio.task_action, 12052 io->taskio.tag_num, io->taskio.tag_type); 12053 break; 12054 default: 12055 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12056 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12057 break; 12058 } 12059 sbuf_cat(&sb, path_str); 12060 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 12061 (intmax_t)time_uptime - io->io_hdr.start_time); 12062 sbuf_finish(&sb); 12063 printf("%s", sbuf_data(&sb)); 12064 } 12065#endif /* CTL_TIME_IO */ 12066 12067#ifdef CTL_IO_DELAY 12068 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12069 struct ctl_lun *lun; 12070 12071 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12072 12073 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12074 } else { 12075 struct ctl_lun *lun; 12076 12077 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12078 if ((lun != NULL) 12079 && (lun->delay_info.datamove_delay > 0)) { 12080 struct callout *callout; 12081 12082 callout = (struct callout *)&io->io_hdr.timer_bytes; 12083 callout_init(callout, /*mpsafe*/ 1); 12084 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12085 callout_reset(callout, 12086 lun->delay_info.datamove_delay * hz, 12087 ctl_datamove_timer_wakeup, io); 12088 if (lun->delay_info.datamove_type == 12089 CTL_DELAY_TYPE_ONESHOT) 12090 lun->delay_info.datamove_delay = 0; 12091 return; 12092 } 12093 } 12094#endif 12095 12096 /* 12097 * This command has been aborted. Set the port status, so we fail 12098 * the data move. 12099 */ 12100 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12101 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 12102 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 12103 io->io_hdr.nexus.targ_port, 12104 (uintmax_t)io->io_hdr.nexus.targ_target.id, 12105 io->io_hdr.nexus.targ_lun); 12106 io->io_hdr.status = CTL_CMD_ABORTED; 12107 io->io_hdr.port_status = 31337; 12108 /* 12109 * Note that the backend, in this case, will get the 12110 * callback in its context. In other cases it may get 12111 * called in the frontend's interrupt thread context. 12112 */ 12113 io->scsiio.be_move_done(io); 12114 return; 12115 } 12116 12117 /* 12118 * If we're in XFER mode and this I/O is from the other shelf 12119 * controller, we need to send the DMA to the other side to 12120 * actually transfer the data to/from the host. In serialize only 12121 * mode the transfer happens below CTL and ctl_datamove() is only 12122 * called on the machine that originally received the I/O. 12123 */ 12124 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 12125 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12126 union ctl_ha_msg msg; 12127 uint32_t sg_entries_sent; 12128 int do_sg_copy; 12129 int i; 12130 12131 memset(&msg, 0, sizeof(msg)); 12132 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 12133 msg.hdr.original_sc = io->io_hdr.original_sc; 12134 msg.hdr.serializing_sc = io; 12135 msg.hdr.nexus = io->io_hdr.nexus; 12136 msg.dt.flags = io->io_hdr.flags; 12137 /* 12138 * We convert everything into a S/G list here. We can't 12139 * pass by reference, only by value between controllers. 12140 * So we can't pass a pointer to the S/G list, only as many 12141 * S/G entries as we can fit in here. If it's possible for 12142 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 12143 * then we need to break this up into multiple transfers. 12144 */ 12145 if (io->scsiio.kern_sg_entries == 0) { 12146 msg.dt.kern_sg_entries = 1; 12147 /* 12148 * If this is in cached memory, flush the cache 12149 * before we send the DMA request to the other 12150 * controller. We want to do this in either the 12151 * read or the write case. The read case is 12152 * straightforward. In the write case, we want to 12153 * make sure nothing is in the local cache that 12154 * could overwrite the DMAed data. 12155 */ 12156 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12157 /* 12158 * XXX KDM use bus_dmamap_sync() here. 12159 */ 12160 } 12161 12162 /* 12163 * Convert to a physical address if this is a 12164 * virtual address. 12165 */ 12166 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 12167 msg.dt.sg_list[0].addr = 12168 io->scsiio.kern_data_ptr; 12169 } else { 12170 /* 12171 * XXX KDM use busdma here! 12172 */ 12173#if 0 12174 msg.dt.sg_list[0].addr = (void *) 12175 vtophys(io->scsiio.kern_data_ptr); 12176#endif 12177 } 12178 12179 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 12180 do_sg_copy = 0; 12181 } else { 12182 struct ctl_sg_entry *sgl; 12183 12184 do_sg_copy = 1; 12185 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 12186 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 12187 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12188 /* 12189 * XXX KDM use bus_dmamap_sync() here. 12190 */ 12191 } 12192 } 12193 12194 msg.dt.kern_data_len = io->scsiio.kern_data_len; 12195 msg.dt.kern_total_len = io->scsiio.kern_total_len; 12196 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 12197 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 12198 msg.dt.sg_sequence = 0; 12199 12200 /* 12201 * Loop until we've sent all of the S/G entries. On the 12202 * other end, we'll recompose these S/G entries into one 12203 * contiguous list before passing it to the 12204 */ 12205 for (sg_entries_sent = 0; sg_entries_sent < 12206 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 12207 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 12208 sizeof(msg.dt.sg_list[0])), 12209 msg.dt.kern_sg_entries - sg_entries_sent); 12210 12211 if (do_sg_copy != 0) { 12212 struct ctl_sg_entry *sgl; 12213 int j; 12214 12215 sgl = (struct ctl_sg_entry *) 12216 io->scsiio.kern_data_ptr; 12217 /* 12218 * If this is in cached memory, flush the cache 12219 * before we send the DMA request to the other 12220 * controller. We want to do this in either 12221 * the * read or the write case. The read 12222 * case is straightforward. In the write 12223 * case, we want to make sure nothing is 12224 * in the local cache that could overwrite 12225 * the DMAed data. 12226 */ 12227 12228 for (i = sg_entries_sent, j = 0; 12229 i < msg.dt.cur_sg_entries; i++, j++) { 12230 if ((io->io_hdr.flags & 12231 CTL_FLAG_NO_DATASYNC) == 0) { 12232 /* 12233 * XXX KDM use bus_dmamap_sync() 12234 */ 12235 } 12236 if ((io->io_hdr.flags & 12237 CTL_FLAG_BUS_ADDR) == 0) { 12238 /* 12239 * XXX KDM use busdma. 12240 */ 12241#if 0 12242 msg.dt.sg_list[j].addr =(void *) 12243 vtophys(sgl[i].addr); 12244#endif 12245 } else { 12246 msg.dt.sg_list[j].addr = 12247 sgl[i].addr; 12248 } 12249 msg.dt.sg_list[j].len = sgl[i].len; 12250 } 12251 } 12252 12253 sg_entries_sent += msg.dt.cur_sg_entries; 12254 if (sg_entries_sent >= msg.dt.kern_sg_entries) 12255 msg.dt.sg_last = 1; 12256 else 12257 msg.dt.sg_last = 0; 12258 12259 /* 12260 * XXX KDM drop and reacquire the lock here? 12261 */ 12262 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12263 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12264 /* 12265 * XXX do something here. 12266 */ 12267 } 12268 12269 msg.dt.sent_sg_entries = sg_entries_sent; 12270 } 12271 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12272 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 12273 ctl_failover_io(io, /*have_lock*/ 0); 12274 12275 } else { 12276 12277 /* 12278 * Lookup the fe_datamove() function for this particular 12279 * front end. 12280 */ 12281 fe_datamove = 12282 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12283 12284 fe_datamove(io); 12285 } 12286} 12287 12288static void 12289ctl_send_datamove_done(union ctl_io *io, int have_lock) 12290{ 12291 union ctl_ha_msg msg; 12292 int isc_status; 12293 12294 memset(&msg, 0, sizeof(msg)); 12295 12296 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 12297 msg.hdr.original_sc = io; 12298 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 12299 msg.hdr.nexus = io->io_hdr.nexus; 12300 msg.hdr.status = io->io_hdr.status; 12301 msg.scsi.tag_num = io->scsiio.tag_num; 12302 msg.scsi.tag_type = io->scsiio.tag_type; 12303 msg.scsi.scsi_status = io->scsiio.scsi_status; 12304 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12305 sizeof(io->scsiio.sense_data)); 12306 msg.scsi.sense_len = io->scsiio.sense_len; 12307 msg.scsi.sense_residual = io->scsiio.sense_residual; 12308 msg.scsi.fetd_status = io->io_hdr.port_status; 12309 msg.scsi.residual = io->scsiio.residual; 12310 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12311 12312 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12313 ctl_failover_io(io, /*have_lock*/ have_lock); 12314 return; 12315 } 12316 12317 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 12318 if (isc_status > CTL_HA_STATUS_SUCCESS) { 12319 /* XXX do something if this fails */ 12320 } 12321 12322} 12323 12324/* 12325 * The DMA to the remote side is done, now we need to tell the other side 12326 * we're done so it can continue with its data movement. 12327 */ 12328static void 12329ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12330{ 12331 union ctl_io *io; 12332 12333 io = rq->context; 12334 12335 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12336 printf("%s: ISC DMA write failed with error %d", __func__, 12337 rq->ret); 12338 ctl_set_internal_failure(&io->scsiio, 12339 /*sks_valid*/ 1, 12340 /*retry_count*/ rq->ret); 12341 } 12342 12343 ctl_dt_req_free(rq); 12344 12345 /* 12346 * In this case, we had to malloc the memory locally. Free it. 12347 */ 12348 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12349 int i; 12350 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12351 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12352 } 12353 /* 12354 * The data is in local and remote memory, so now we need to send 12355 * status (good or back) back to the other side. 12356 */ 12357 ctl_send_datamove_done(io, /*have_lock*/ 0); 12358} 12359 12360/* 12361 * We've moved the data from the host/controller into local memory. Now we 12362 * need to push it over to the remote controller's memory. 12363 */ 12364static int 12365ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12366{ 12367 int retval; 12368 12369 retval = 0; 12370 12371 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12372 ctl_datamove_remote_write_cb); 12373 12374 return (retval); 12375} 12376 12377static void 12378ctl_datamove_remote_write(union ctl_io *io) 12379{ 12380 int retval; 12381 void (*fe_datamove)(union ctl_io *io); 12382 12383 /* 12384 * - Get the data from the host/HBA into local memory. 12385 * - DMA memory from the local controller to the remote controller. 12386 * - Send status back to the remote controller. 12387 */ 12388 12389 retval = ctl_datamove_remote_sgl_setup(io); 12390 if (retval != 0) 12391 return; 12392 12393 /* Switch the pointer over so the FETD knows what to do */ 12394 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12395 12396 /* 12397 * Use a custom move done callback, since we need to send completion 12398 * back to the other controller, not to the backend on this side. 12399 */ 12400 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12401 12402 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12403 12404 fe_datamove(io); 12405 12406 return; 12407 12408} 12409 12410static int 12411ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12412{ 12413#if 0 12414 char str[256]; 12415 char path_str[64]; 12416 struct sbuf sb; 12417#endif 12418 12419 /* 12420 * In this case, we had to malloc the memory locally. Free it. 12421 */ 12422 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12423 int i; 12424 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12425 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12426 } 12427 12428#if 0 12429 scsi_path_string(io, path_str, sizeof(path_str)); 12430 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12431 sbuf_cat(&sb, path_str); 12432 scsi_command_string(&io->scsiio, NULL, &sb); 12433 sbuf_printf(&sb, "\n"); 12434 sbuf_cat(&sb, path_str); 12435 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12436 io->scsiio.tag_num, io->scsiio.tag_type); 12437 sbuf_cat(&sb, path_str); 12438 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12439 io->io_hdr.flags, io->io_hdr.status); 12440 sbuf_finish(&sb); 12441 printk("%s", sbuf_data(&sb)); 12442#endif 12443 12444 12445 /* 12446 * The read is done, now we need to send status (good or bad) back 12447 * to the other side. 12448 */ 12449 ctl_send_datamove_done(io, /*have_lock*/ 0); 12450 12451 return (0); 12452} 12453 12454static void 12455ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12456{ 12457 union ctl_io *io; 12458 void (*fe_datamove)(union ctl_io *io); 12459 12460 io = rq->context; 12461 12462 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12463 printf("%s: ISC DMA read failed with error %d", __func__, 12464 rq->ret); 12465 ctl_set_internal_failure(&io->scsiio, 12466 /*sks_valid*/ 1, 12467 /*retry_count*/ rq->ret); 12468 } 12469 12470 ctl_dt_req_free(rq); 12471 12472 /* Switch the pointer over so the FETD knows what to do */ 12473 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12474 12475 /* 12476 * Use a custom move done callback, since we need to send completion 12477 * back to the other controller, not to the backend on this side. 12478 */ 12479 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12480 12481 /* XXX KDM add checks like the ones in ctl_datamove? */ 12482 12483 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12484 12485 fe_datamove(io); 12486} 12487 12488static int 12489ctl_datamove_remote_sgl_setup(union ctl_io *io) 12490{ 12491 struct ctl_sg_entry *local_sglist, *remote_sglist; 12492 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12493 struct ctl_softc *softc; 12494 int retval; 12495 int i; 12496 12497 retval = 0; 12498 softc = control_softc; 12499 12500 local_sglist = io->io_hdr.local_sglist; 12501 local_dma_sglist = io->io_hdr.local_dma_sglist; 12502 remote_sglist = io->io_hdr.remote_sglist; 12503 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12504 12505 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12506 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12507 local_sglist[i].len = remote_sglist[i].len; 12508 12509 /* 12510 * XXX Detect the situation where the RS-level I/O 12511 * redirector on the other side has already read the 12512 * data off of the AOR RS on this side, and 12513 * transferred it to remote (mirror) memory on the 12514 * other side. Since we already have the data in 12515 * memory here, we just need to use it. 12516 * 12517 * XXX KDM this can probably be removed once we 12518 * get the cache device code in and take the 12519 * current AOR implementation out. 12520 */ 12521#ifdef NEEDTOPORT 12522 if ((remote_sglist[i].addr >= 12523 (void *)vtophys(softc->mirr->addr)) 12524 && (remote_sglist[i].addr < 12525 ((void *)vtophys(softc->mirr->addr) + 12526 CacheMirrorOffset))) { 12527 local_sglist[i].addr = remote_sglist[i].addr - 12528 CacheMirrorOffset; 12529 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12530 CTL_FLAG_DATA_IN) 12531 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12532 } else { 12533 local_sglist[i].addr = remote_sglist[i].addr + 12534 CacheMirrorOffset; 12535 } 12536#endif 12537#if 0 12538 printf("%s: local %p, remote %p, len %d\n", 12539 __func__, local_sglist[i].addr, 12540 remote_sglist[i].addr, local_sglist[i].len); 12541#endif 12542 } 12543 } else { 12544 uint32_t len_to_go; 12545 12546 /* 12547 * In this case, we don't have automatically allocated 12548 * memory for this I/O on this controller. This typically 12549 * happens with internal CTL I/O -- e.g. inquiry, mode 12550 * sense, etc. Anything coming from RAIDCore will have 12551 * a mirror area available. 12552 */ 12553 len_to_go = io->scsiio.kern_data_len; 12554 12555 /* 12556 * Clear the no datasync flag, we have to use malloced 12557 * buffers. 12558 */ 12559 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12560 12561 /* 12562 * The difficult thing here is that the size of the various 12563 * S/G segments may be different than the size from the 12564 * remote controller. That'll make it harder when DMAing 12565 * the data back to the other side. 12566 */ 12567 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12568 sizeof(io->io_hdr.remote_sglist[0])) && 12569 (len_to_go > 0); i++) { 12570 local_sglist[i].len = ctl_min(len_to_go, 131072); 12571 CTL_SIZE_8B(local_dma_sglist[i].len, 12572 local_sglist[i].len); 12573 local_sglist[i].addr = 12574 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12575 12576 local_dma_sglist[i].addr = local_sglist[i].addr; 12577 12578 if (local_sglist[i].addr == NULL) { 12579 int j; 12580 12581 printf("malloc failed for %zd bytes!", 12582 local_dma_sglist[i].len); 12583 for (j = 0; j < i; j++) { 12584 free(local_sglist[j].addr, M_CTL); 12585 } 12586 ctl_set_internal_failure(&io->scsiio, 12587 /*sks_valid*/ 1, 12588 /*retry_count*/ 4857); 12589 retval = 1; 12590 goto bailout_error; 12591 12592 } 12593 /* XXX KDM do we need a sync here? */ 12594 12595 len_to_go -= local_sglist[i].len; 12596 } 12597 /* 12598 * Reset the number of S/G entries accordingly. The 12599 * original number of S/G entries is available in 12600 * rem_sg_entries. 12601 */ 12602 io->scsiio.kern_sg_entries = i; 12603 12604#if 0 12605 printf("%s: kern_sg_entries = %d\n", __func__, 12606 io->scsiio.kern_sg_entries); 12607 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12608 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12609 local_sglist[i].addr, local_sglist[i].len, 12610 local_dma_sglist[i].len); 12611#endif 12612 } 12613 12614 12615 return (retval); 12616 12617bailout_error: 12618 12619 ctl_send_datamove_done(io, /*have_lock*/ 0); 12620 12621 return (retval); 12622} 12623 12624static int 12625ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12626 ctl_ha_dt_cb callback) 12627{ 12628 struct ctl_ha_dt_req *rq; 12629 struct ctl_sg_entry *remote_sglist, *local_sglist; 12630 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12631 uint32_t local_used, remote_used, total_used; 12632 int retval; 12633 int i, j; 12634 12635 retval = 0; 12636 12637 rq = ctl_dt_req_alloc(); 12638 12639 /* 12640 * If we failed to allocate the request, and if the DMA didn't fail 12641 * anyway, set busy status. This is just a resource allocation 12642 * failure. 12643 */ 12644 if ((rq == NULL) 12645 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12646 ctl_set_busy(&io->scsiio); 12647 12648 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12649 12650 if (rq != NULL) 12651 ctl_dt_req_free(rq); 12652 12653 /* 12654 * The data move failed. We need to return status back 12655 * to the other controller. No point in trying to DMA 12656 * data to the remote controller. 12657 */ 12658 12659 ctl_send_datamove_done(io, /*have_lock*/ 0); 12660 12661 retval = 1; 12662 12663 goto bailout; 12664 } 12665 12666 local_sglist = io->io_hdr.local_sglist; 12667 local_dma_sglist = io->io_hdr.local_dma_sglist; 12668 remote_sglist = io->io_hdr.remote_sglist; 12669 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12670 local_used = 0; 12671 remote_used = 0; 12672 total_used = 0; 12673 12674 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12675 rq->ret = CTL_HA_STATUS_SUCCESS; 12676 rq->context = io; 12677 callback(rq); 12678 goto bailout; 12679 } 12680 12681 /* 12682 * Pull/push the data over the wire from/to the other controller. 12683 * This takes into account the possibility that the local and 12684 * remote sglists may not be identical in terms of the size of 12685 * the elements and the number of elements. 12686 * 12687 * One fundamental assumption here is that the length allocated for 12688 * both the local and remote sglists is identical. Otherwise, we've 12689 * essentially got a coding error of some sort. 12690 */ 12691 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12692 int isc_ret; 12693 uint32_t cur_len, dma_length; 12694 uint8_t *tmp_ptr; 12695 12696 rq->id = CTL_HA_DATA_CTL; 12697 rq->command = command; 12698 rq->context = io; 12699 12700 /* 12701 * Both pointers should be aligned. But it is possible 12702 * that the allocation length is not. They should both 12703 * also have enough slack left over at the end, though, 12704 * to round up to the next 8 byte boundary. 12705 */ 12706 cur_len = ctl_min(local_sglist[i].len - local_used, 12707 remote_sglist[j].len - remote_used); 12708 12709 /* 12710 * In this case, we have a size issue and need to decrease 12711 * the size, except in the case where we actually have less 12712 * than 8 bytes left. In that case, we need to increase 12713 * the DMA length to get the last bit. 12714 */ 12715 if ((cur_len & 0x7) != 0) { 12716 if (cur_len > 0x7) { 12717 cur_len = cur_len - (cur_len & 0x7); 12718 dma_length = cur_len; 12719 } else { 12720 CTL_SIZE_8B(dma_length, cur_len); 12721 } 12722 12723 } else 12724 dma_length = cur_len; 12725 12726 /* 12727 * If we had to allocate memory for this I/O, instead of using 12728 * the non-cached mirror memory, we'll need to flush the cache 12729 * before trying to DMA to the other controller. 12730 * 12731 * We could end up doing this multiple times for the same 12732 * segment if we have a larger local segment than remote 12733 * segment. That shouldn't be an issue. 12734 */ 12735 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12736 /* 12737 * XXX KDM use bus_dmamap_sync() here. 12738 */ 12739 } 12740 12741 rq->size = dma_length; 12742 12743 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12744 tmp_ptr += local_used; 12745 12746 /* Use physical addresses when talking to ISC hardware */ 12747 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12748 /* XXX KDM use busdma */ 12749#if 0 12750 rq->local = vtophys(tmp_ptr); 12751#endif 12752 } else 12753 rq->local = tmp_ptr; 12754 12755 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12756 tmp_ptr += remote_used; 12757 rq->remote = tmp_ptr; 12758 12759 rq->callback = NULL; 12760 12761 local_used += cur_len; 12762 if (local_used >= local_sglist[i].len) { 12763 i++; 12764 local_used = 0; 12765 } 12766 12767 remote_used += cur_len; 12768 if (remote_used >= remote_sglist[j].len) { 12769 j++; 12770 remote_used = 0; 12771 } 12772 total_used += cur_len; 12773 12774 if (total_used >= io->scsiio.kern_data_len) 12775 rq->callback = callback; 12776 12777 if ((rq->size & 0x7) != 0) { 12778 printf("%s: warning: size %d is not on 8b boundary\n", 12779 __func__, rq->size); 12780 } 12781 if (((uintptr_t)rq->local & 0x7) != 0) { 12782 printf("%s: warning: local %p not on 8b boundary\n", 12783 __func__, rq->local); 12784 } 12785 if (((uintptr_t)rq->remote & 0x7) != 0) { 12786 printf("%s: warning: remote %p not on 8b boundary\n", 12787 __func__, rq->local); 12788 } 12789#if 0 12790 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12791 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12792 rq->local, rq->remote, rq->size); 12793#endif 12794 12795 isc_ret = ctl_dt_single(rq); 12796 if (isc_ret == CTL_HA_STATUS_WAIT) 12797 continue; 12798 12799 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12800 rq->ret = CTL_HA_STATUS_SUCCESS; 12801 } else { 12802 rq->ret = isc_ret; 12803 } 12804 callback(rq); 12805 goto bailout; 12806 } 12807 12808bailout: 12809 return (retval); 12810 12811} 12812 12813static void 12814ctl_datamove_remote_read(union ctl_io *io) 12815{ 12816 int retval; 12817 int i; 12818 12819 /* 12820 * This will send an error to the other controller in the case of a 12821 * failure. 12822 */ 12823 retval = ctl_datamove_remote_sgl_setup(io); 12824 if (retval != 0) 12825 return; 12826 12827 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12828 ctl_datamove_remote_read_cb); 12829 if ((retval != 0) 12830 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12831 /* 12832 * Make sure we free memory if there was an error.. The 12833 * ctl_datamove_remote_xfer() function will send the 12834 * datamove done message, or call the callback with an 12835 * error if there is a problem. 12836 */ 12837 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12838 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12839 } 12840 12841 return; 12842} 12843 12844/* 12845 * Process a datamove request from the other controller. This is used for 12846 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12847 * first. Once that is complete, the data gets DMAed into the remote 12848 * controller's memory. For reads, we DMA from the remote controller's 12849 * memory into our memory first, and then move it out to the FETD. 12850 */ 12851static void 12852ctl_datamove_remote(union ctl_io *io) 12853{ 12854 struct ctl_softc *softc; 12855 12856 softc = control_softc; 12857 12858 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12859 12860 /* 12861 * Note that we look for an aborted I/O here, but don't do some of 12862 * the other checks that ctl_datamove() normally does. We don't 12863 * need to run the task queue, because this I/O is on the ISC 12864 * queue, which is executed by the work thread after the task queue. 12865 * We don't need to run the datamove delay code, since that should 12866 * have been done if need be on the other controller. 12867 */ 12868 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12869 12870 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12871 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12872 io->io_hdr.nexus.targ_port, 12873 io->io_hdr.nexus.targ_target.id, 12874 io->io_hdr.nexus.targ_lun); 12875 io->io_hdr.status = CTL_CMD_ABORTED; 12876 io->io_hdr.port_status = 31338; 12877 12878 ctl_send_datamove_done(io, /*have_lock*/ 0); 12879 12880 return; 12881 } 12882 12883 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12884 ctl_datamove_remote_write(io); 12885 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12886 ctl_datamove_remote_read(io); 12887 } else { 12888 union ctl_ha_msg msg; 12889 struct scsi_sense_data *sense; 12890 uint8_t sks[3]; 12891 int retry_count; 12892 12893 memset(&msg, 0, sizeof(msg)); 12894 12895 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12896 msg.hdr.status = CTL_SCSI_ERROR; 12897 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12898 12899 retry_count = 4243; 12900 12901 sense = &msg.scsi.sense_data; 12902 sks[0] = SSD_SCS_VALID; 12903 sks[1] = (retry_count >> 8) & 0xff; 12904 sks[2] = retry_count & 0xff; 12905 12906 /* "Internal target failure" */ 12907 scsi_set_sense_data(sense, 12908 /*sense_format*/ SSD_TYPE_NONE, 12909 /*current_error*/ 1, 12910 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12911 /*asc*/ 0x44, 12912 /*ascq*/ 0x00, 12913 /*type*/ SSD_ELEM_SKS, 12914 /*size*/ sizeof(sks), 12915 /*data*/ sks, 12916 SSD_ELEM_NONE); 12917 12918 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12919 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12920 ctl_failover_io(io, /*have_lock*/ 1); 12921 return; 12922 } 12923 12924 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12925 CTL_HA_STATUS_SUCCESS) { 12926 /* XXX KDM what to do if this fails? */ 12927 } 12928 return; 12929 } 12930 12931} 12932 12933static int 12934ctl_process_done(union ctl_io *io) 12935{ 12936 struct ctl_lun *lun; 12937 struct ctl_softc *ctl_softc; 12938 void (*fe_done)(union ctl_io *io); 12939 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12940 12941 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12942 12943 fe_done = 12944 control_softc->ctl_ports[targ_port]->fe_done; 12945 12946#ifdef CTL_TIME_IO 12947 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12948 char str[256]; 12949 char path_str[64]; 12950 struct sbuf sb; 12951 12952 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12953 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12954 12955 sbuf_cat(&sb, path_str); 12956 switch (io->io_hdr.io_type) { 12957 case CTL_IO_SCSI: 12958 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12959 sbuf_printf(&sb, "\n"); 12960 sbuf_cat(&sb, path_str); 12961 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12962 io->scsiio.tag_num, io->scsiio.tag_type); 12963 break; 12964 case CTL_IO_TASK: 12965 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12966 "Tag Type: %d\n", io->taskio.task_action, 12967 io->taskio.tag_num, io->taskio.tag_type); 12968 break; 12969 default: 12970 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12971 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12972 break; 12973 } 12974 sbuf_cat(&sb, path_str); 12975 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12976 (intmax_t)time_uptime - io->io_hdr.start_time); 12977 sbuf_finish(&sb); 12978 printf("%s", sbuf_data(&sb)); 12979 } 12980#endif /* CTL_TIME_IO */ 12981 12982 switch (io->io_hdr.io_type) { 12983 case CTL_IO_SCSI: 12984 break; 12985 case CTL_IO_TASK: 12986 if (bootverbose || verbose > 0) 12987 ctl_io_error_print(io, NULL); 12988 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12989 ctl_free_io(io); 12990 else 12991 fe_done(io); 12992 return (CTL_RETVAL_COMPLETE); 12993 break; 12994 default: 12995 printf("ctl_process_done: invalid io type %d\n", 12996 io->io_hdr.io_type); 12997 panic("ctl_process_done: invalid io type %d\n", 12998 io->io_hdr.io_type); 12999 break; /* NOTREACHED */ 13000 } 13001 13002 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13003 if (lun == NULL) { 13004 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 13005 io->io_hdr.nexus.targ_mapped_lun)); 13006 fe_done(io); 13007 goto bailout; 13008 } 13009 ctl_softc = lun->ctl_softc; 13010 13011 mtx_lock(&lun->lun_lock); 13012 13013 /* 13014 * Check to see if we have any errors to inject here. We only 13015 * inject errors for commands that don't already have errors set. 13016 */ 13017 if ((STAILQ_FIRST(&lun->error_list) != NULL) 13018 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 13019 ctl_inject_error(lun, io); 13020 13021 /* 13022 * XXX KDM how do we treat commands that aren't completed 13023 * successfully? 13024 * 13025 * XXX KDM should we also track I/O latency? 13026 */ 13027 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS && 13028 io->io_hdr.io_type == CTL_IO_SCSI) { 13029#ifdef CTL_TIME_IO 13030 struct bintime cur_bt; 13031#endif 13032 int type; 13033 13034 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 13035 CTL_FLAG_DATA_IN) 13036 type = CTL_STATS_READ; 13037 else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 13038 CTL_FLAG_DATA_OUT) 13039 type = CTL_STATS_WRITE; 13040 else 13041 type = CTL_STATS_NO_IO; 13042 13043 lun->stats.ports[targ_port].bytes[type] += 13044 io->scsiio.kern_total_len; 13045 lun->stats.ports[targ_port].operations[type]++; 13046#ifdef CTL_TIME_IO 13047 bintime_add(&lun->stats.ports[targ_port].dma_time[type], 13048 &io->io_hdr.dma_bt); 13049 lun->stats.ports[targ_port].num_dmas[type] += 13050 io->io_hdr.num_dmas; 13051 getbintime(&cur_bt); 13052 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 13053 bintime_add(&lun->stats.ports[targ_port].time[type], &cur_bt); 13054#endif 13055 } 13056 13057 /* 13058 * Remove this from the OOA queue. 13059 */ 13060 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 13061 13062 /* 13063 * Run through the blocked queue on this LUN and see if anything 13064 * has become unblocked, now that this transaction is done. 13065 */ 13066 ctl_check_blocked(lun); 13067 13068 /* 13069 * If the LUN has been invalidated, free it if there is nothing 13070 * left on its OOA queue. 13071 */ 13072 if ((lun->flags & CTL_LUN_INVALID) 13073 && TAILQ_EMPTY(&lun->ooa_queue)) { 13074 mtx_unlock(&lun->lun_lock); 13075 mtx_lock(&ctl_softc->ctl_lock); 13076 ctl_free_lun(lun); 13077 mtx_unlock(&ctl_softc->ctl_lock); 13078 } else 13079 mtx_unlock(&lun->lun_lock); 13080 13081 /* 13082 * If this command has been aborted, make sure we set the status 13083 * properly. The FETD is responsible for freeing the I/O and doing 13084 * whatever it needs to do to clean up its state. 13085 */ 13086 if (io->io_hdr.flags & CTL_FLAG_ABORT) 13087 io->io_hdr.status = CTL_CMD_ABORTED; 13088 13089 /* 13090 * We print out status for every task management command. For SCSI 13091 * commands, we filter out any unit attention errors; they happen 13092 * on every boot, and would clutter up the log. Note: task 13093 * management commands aren't printed here, they are printed above, 13094 * since they should never even make it down here. 13095 */ 13096 switch (io->io_hdr.io_type) { 13097 case CTL_IO_SCSI: { 13098 int error_code, sense_key, asc, ascq; 13099 13100 sense_key = 0; 13101 13102 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 13103 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 13104 /* 13105 * Since this is just for printing, no need to 13106 * show errors here. 13107 */ 13108 scsi_extract_sense_len(&io->scsiio.sense_data, 13109 io->scsiio.sense_len, 13110 &error_code, 13111 &sense_key, 13112 &asc, 13113 &ascq, 13114 /*show_errors*/ 0); 13115 } 13116 13117 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 13118 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 13119 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 13120 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 13121 13122 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 13123 ctl_softc->skipped_prints++; 13124 } else { 13125 uint32_t skipped_prints; 13126 13127 skipped_prints = ctl_softc->skipped_prints; 13128 13129 ctl_softc->skipped_prints = 0; 13130 ctl_softc->last_print_jiffies = time_uptime; 13131 13132 if (skipped_prints > 0) { 13133#ifdef NEEDTOPORT 13134 csevent_log(CSC_CTL | CSC_SHELF_SW | 13135 CTL_ERROR_REPORT, 13136 csevent_LogType_Trace, 13137 csevent_Severity_Information, 13138 csevent_AlertLevel_Green, 13139 csevent_FRU_Firmware, 13140 csevent_FRU_Unknown, 13141 "High CTL error volume, %d prints " 13142 "skipped", skipped_prints); 13143#endif 13144 } 13145 if (bootverbose || verbose > 0) 13146 ctl_io_error_print(io, NULL); 13147 } 13148 } 13149 break; 13150 } 13151 case CTL_IO_TASK: 13152 if (bootverbose || verbose > 0) 13153 ctl_io_error_print(io, NULL); 13154 break; 13155 default: 13156 break; 13157 } 13158 13159 /* 13160 * Tell the FETD or the other shelf controller we're done with this 13161 * command. Note that only SCSI commands get to this point. Task 13162 * management commands are completed above. 13163 * 13164 * We only send status to the other controller if we're in XFER 13165 * mode. In SER_ONLY mode, the I/O is done on the controller that 13166 * received the I/O (from CTL's perspective), and so the status is 13167 * generated there. 13168 * 13169 * XXX KDM if we hold the lock here, we could cause a deadlock 13170 * if the frontend comes back in in this context to queue 13171 * something. 13172 */ 13173 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 13174 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 13175 union ctl_ha_msg msg; 13176 13177 memset(&msg, 0, sizeof(msg)); 13178 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 13179 msg.hdr.original_sc = io->io_hdr.original_sc; 13180 msg.hdr.nexus = io->io_hdr.nexus; 13181 msg.hdr.status = io->io_hdr.status; 13182 msg.scsi.scsi_status = io->scsiio.scsi_status; 13183 msg.scsi.tag_num = io->scsiio.tag_num; 13184 msg.scsi.tag_type = io->scsiio.tag_type; 13185 msg.scsi.sense_len = io->scsiio.sense_len; 13186 msg.scsi.sense_residual = io->scsiio.sense_residual; 13187 msg.scsi.residual = io->scsiio.residual; 13188 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 13189 sizeof(io->scsiio.sense_data)); 13190 /* 13191 * We copy this whether or not this is an I/O-related 13192 * command. Otherwise, we'd have to go and check to see 13193 * whether it's a read/write command, and it really isn't 13194 * worth it. 13195 */ 13196 memcpy(&msg.scsi.lbalen, 13197 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 13198 sizeof(msg.scsi.lbalen)); 13199 13200 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 13201 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 13202 /* XXX do something here */ 13203 } 13204 13205 ctl_free_io(io); 13206 } else 13207 fe_done(io); 13208 13209bailout: 13210 13211 return (CTL_RETVAL_COMPLETE); 13212} 13213 13214/* 13215 * Front end should call this if it doesn't do autosense. When the request 13216 * sense comes back in from the initiator, we'll dequeue this and send it. 13217 */ 13218int 13219ctl_queue_sense(union ctl_io *io) 13220{ 13221 struct ctl_lun *lun; 13222 struct ctl_softc *ctl_softc; 13223 uint32_t initidx, targ_lun; 13224 13225 ctl_softc = control_softc; 13226 13227 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13228 13229 /* 13230 * LUN lookup will likely move to the ctl_work_thread() once we 13231 * have our new queueing infrastructure (that doesn't put things on 13232 * a per-LUN queue initially). That is so that we can handle 13233 * things like an INQUIRY to a LUN that we don't have enabled. We 13234 * can't deal with that right now. 13235 */ 13236 mtx_lock(&ctl_softc->ctl_lock); 13237 13238 /* 13239 * If we don't have a LUN for this, just toss the sense 13240 * information. 13241 */ 13242 targ_lun = io->io_hdr.nexus.targ_lun; 13243 if (io->io_hdr.nexus.lun_map_fn != NULL) 13244 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 13245 if ((targ_lun < CTL_MAX_LUNS) 13246 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13247 lun = ctl_softc->ctl_luns[targ_lun]; 13248 else 13249 goto bailout; 13250 13251 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13252 13253 mtx_lock(&lun->lun_lock); 13254 /* 13255 * Already have CA set for this LUN...toss the sense information. 13256 */ 13257 if (ctl_is_set(lun->have_ca, initidx)) { 13258 mtx_unlock(&lun->lun_lock); 13259 goto bailout; 13260 } 13261 13262 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13263 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13264 sizeof(io->scsiio.sense_data))); 13265 ctl_set_mask(lun->have_ca, initidx); 13266 mtx_unlock(&lun->lun_lock); 13267 13268bailout: 13269 mtx_unlock(&ctl_softc->ctl_lock); 13270 13271 ctl_free_io(io); 13272 13273 return (CTL_RETVAL_COMPLETE); 13274} 13275 13276/* 13277 * Primary command inlet from frontend ports. All SCSI and task I/O 13278 * requests must go through this function. 13279 */ 13280int 13281ctl_queue(union ctl_io *io) 13282{ 13283 struct ctl_softc *ctl_softc; 13284 13285 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13286 13287 ctl_softc = control_softc; 13288 13289#ifdef CTL_TIME_IO 13290 io->io_hdr.start_time = time_uptime; 13291 getbintime(&io->io_hdr.start_bt); 13292#endif /* CTL_TIME_IO */ 13293 13294 /* Map FE-specific LUN ID into global one. */ 13295 if (io->io_hdr.nexus.lun_map_fn != NULL) 13296 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.lun_map_fn( 13297 io->io_hdr.nexus.lun_map_arg, io->io_hdr.nexus.targ_lun); 13298 else 13299 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.targ_lun; 13300 13301 switch (io->io_hdr.io_type) { 13302 case CTL_IO_SCSI: 13303 ctl_enqueue_incoming(io); 13304 break; 13305 case CTL_IO_TASK: 13306 ctl_run_task(io); 13307 break; 13308 default: 13309 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13310 return (EINVAL); 13311 } 13312 13313 return (CTL_RETVAL_COMPLETE); 13314} 13315 13316#ifdef CTL_IO_DELAY 13317static void 13318ctl_done_timer_wakeup(void *arg) 13319{ 13320 union ctl_io *io; 13321 13322 io = (union ctl_io *)arg; 13323 ctl_done(io); 13324} 13325#endif /* CTL_IO_DELAY */ 13326 13327void 13328ctl_done(union ctl_io *io) 13329{ 13330 struct ctl_softc *ctl_softc; 13331 13332 ctl_softc = control_softc; 13333 13334 /* 13335 * Enable this to catch duplicate completion issues. 13336 */ 13337#if 0 13338 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13339 printf("%s: type %d msg %d cdb %x iptl: " 13340 "%d:%d:%d:%d tag 0x%04x " 13341 "flag %#x status %x\n", 13342 __func__, 13343 io->io_hdr.io_type, 13344 io->io_hdr.msg_type, 13345 io->scsiio.cdb[0], 13346 io->io_hdr.nexus.initid.id, 13347 io->io_hdr.nexus.targ_port, 13348 io->io_hdr.nexus.targ_target.id, 13349 io->io_hdr.nexus.targ_lun, 13350 (io->io_hdr.io_type == 13351 CTL_IO_TASK) ? 13352 io->taskio.tag_num : 13353 io->scsiio.tag_num, 13354 io->io_hdr.flags, 13355 io->io_hdr.status); 13356 } else 13357 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13358#endif 13359 13360 /* 13361 * This is an internal copy of an I/O, and should not go through 13362 * the normal done processing logic. 13363 */ 13364 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) 13365 return; 13366 13367 /* 13368 * We need to send a msg to the serializing shelf to finish the IO 13369 * as well. We don't send a finish message to the other shelf if 13370 * this is a task management command. Task management commands 13371 * aren't serialized in the OOA queue, but rather just executed on 13372 * both shelf controllers for commands that originated on that 13373 * controller. 13374 */ 13375 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13376 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13377 union ctl_ha_msg msg_io; 13378 13379 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13380 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13381 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13382 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13383 } 13384 /* continue on to finish IO */ 13385 } 13386#ifdef CTL_IO_DELAY 13387 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13388 struct ctl_lun *lun; 13389 13390 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13391 13392 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13393 } else { 13394 struct ctl_lun *lun; 13395 13396 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13397 13398 if ((lun != NULL) 13399 && (lun->delay_info.done_delay > 0)) { 13400 struct callout *callout; 13401 13402 callout = (struct callout *)&io->io_hdr.timer_bytes; 13403 callout_init(callout, /*mpsafe*/ 1); 13404 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13405 callout_reset(callout, 13406 lun->delay_info.done_delay * hz, 13407 ctl_done_timer_wakeup, io); 13408 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13409 lun->delay_info.done_delay = 0; 13410 return; 13411 } 13412 } 13413#endif /* CTL_IO_DELAY */ 13414 13415 ctl_enqueue_done(io); 13416} 13417 13418int 13419ctl_isc(struct ctl_scsiio *ctsio) 13420{ 13421 struct ctl_lun *lun; 13422 int retval; 13423 13424 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13425 13426 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13427 13428 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13429 13430 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13431 13432 return (retval); 13433} 13434 13435 13436static void 13437ctl_work_thread(void *arg) 13438{ 13439 struct ctl_thread *thr = (struct ctl_thread *)arg; 13440 struct ctl_softc *softc = thr->ctl_softc; 13441 union ctl_io *io; 13442 int retval; 13443 13444 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13445 13446 for (;;) { 13447 retval = 0; 13448 13449 /* 13450 * We handle the queues in this order: 13451 * - ISC 13452 * - done queue (to free up resources, unblock other commands) 13453 * - RtR queue 13454 * - incoming queue 13455 * 13456 * If those queues are empty, we break out of the loop and 13457 * go to sleep. 13458 */ 13459 mtx_lock(&thr->queue_lock); 13460 io = (union ctl_io *)STAILQ_FIRST(&thr->isc_queue); 13461 if (io != NULL) { 13462 STAILQ_REMOVE_HEAD(&thr->isc_queue, links); 13463 mtx_unlock(&thr->queue_lock); 13464 ctl_handle_isc(io); 13465 continue; 13466 } 13467 io = (union ctl_io *)STAILQ_FIRST(&thr->done_queue); 13468 if (io != NULL) { 13469 STAILQ_REMOVE_HEAD(&thr->done_queue, links); 13470 /* clear any blocked commands, call fe_done */ 13471 mtx_unlock(&thr->queue_lock); 13472 retval = ctl_process_done(io); 13473 continue; 13474 } 13475 if (!ctl_pause_rtr) { 13476 io = (union ctl_io *)STAILQ_FIRST(&thr->rtr_queue); 13477 if (io != NULL) { 13478 STAILQ_REMOVE_HEAD(&thr->rtr_queue, links); 13479 mtx_unlock(&thr->queue_lock); 13480 retval = ctl_scsiio(&io->scsiio); 13481 if (retval != CTL_RETVAL_COMPLETE) 13482 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13483 continue; 13484 } 13485 } 13486 io = (union ctl_io *)STAILQ_FIRST(&thr->incoming_queue); 13487 if (io != NULL) { 13488 STAILQ_REMOVE_HEAD(&thr->incoming_queue, links); 13489 mtx_unlock(&thr->queue_lock); 13490 ctl_scsiio_precheck(softc, &io->scsiio); 13491 continue; 13492 } 13493 13494 /* Sleep until we have something to do. */ 13495 mtx_sleep(thr, &thr->queue_lock, PDROP | PRIBIO, "-", 0); 13496 } 13497} 13498 13499static void 13500ctl_lun_thread(void *arg) 13501{ 13502 struct ctl_softc *softc = (struct ctl_softc *)arg; 13503 struct ctl_be_lun *be_lun; 13504 int retval; 13505 13506 CTL_DEBUG_PRINT(("ctl_lun_thread starting\n")); 13507 13508 for (;;) { 13509 retval = 0; 13510 mtx_lock(&softc->ctl_lock); 13511 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13512 if (be_lun != NULL) { 13513 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13514 mtx_unlock(&softc->ctl_lock); 13515 ctl_create_lun(be_lun); 13516 continue; 13517 } 13518 13519 /* Sleep until we have something to do. */ 13520 mtx_sleep(&softc->pending_lun_queue, &softc->ctl_lock, 13521 PDROP | PRIBIO, "-", 0); 13522 } 13523} 13524 13525static void 13526ctl_enqueue_incoming(union ctl_io *io) 13527{ 13528 struct ctl_softc *softc = control_softc; 13529 struct ctl_thread *thr; 13530 13531 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13532 mtx_lock(&thr->queue_lock); 13533 STAILQ_INSERT_TAIL(&thr->incoming_queue, &io->io_hdr, links); 13534 mtx_unlock(&thr->queue_lock); 13535 wakeup(thr); 13536} 13537 13538static void 13539ctl_enqueue_rtr(union ctl_io *io) 13540{ 13541 struct ctl_softc *softc = control_softc; 13542 struct ctl_thread *thr; 13543 13544 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13545 mtx_lock(&thr->queue_lock); 13546 STAILQ_INSERT_TAIL(&thr->rtr_queue, &io->io_hdr, links); 13547 mtx_unlock(&thr->queue_lock); 13548 wakeup(thr); 13549} 13550 13551static void 13552ctl_enqueue_done(union ctl_io *io) 13553{ 13554 struct ctl_softc *softc = control_softc; 13555 struct ctl_thread *thr; 13556 13557 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13558 mtx_lock(&thr->queue_lock); 13559 STAILQ_INSERT_TAIL(&thr->done_queue, &io->io_hdr, links); 13560 mtx_unlock(&thr->queue_lock); 13561 wakeup(thr); 13562} 13563 13564static void 13565ctl_enqueue_isc(union ctl_io *io) 13566{ 13567 struct ctl_softc *softc = control_softc; 13568 struct ctl_thread *thr; 13569 13570 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13571 mtx_lock(&thr->queue_lock); 13572 STAILQ_INSERT_TAIL(&thr->isc_queue, &io->io_hdr, links); 13573 mtx_unlock(&thr->queue_lock); 13574 wakeup(thr); 13575} 13576 13577/* Initialization and failover */ 13578 13579void 13580ctl_init_isc_msg(void) 13581{ 13582 printf("CTL: Still calling this thing\n"); 13583} 13584 13585/* 13586 * Init component 13587 * Initializes component into configuration defined by bootMode 13588 * (see hasc-sv.c) 13589 * returns hasc_Status: 13590 * OK 13591 * ERROR - fatal error 13592 */ 13593static ctl_ha_comp_status 13594ctl_isc_init(struct ctl_ha_component *c) 13595{ 13596 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13597 13598 c->status = ret; 13599 return ret; 13600} 13601 13602/* Start component 13603 * Starts component in state requested. If component starts successfully, 13604 * it must set its own state to the requestrd state 13605 * When requested state is HASC_STATE_HA, the component may refine it 13606 * by adding _SLAVE or _MASTER flags. 13607 * Currently allowed state transitions are: 13608 * UNKNOWN->HA - initial startup 13609 * UNKNOWN->SINGLE - initial startup when no parter detected 13610 * HA->SINGLE - failover 13611 * returns ctl_ha_comp_status: 13612 * OK - component successfully started in requested state 13613 * FAILED - could not start the requested state, failover may 13614 * be possible 13615 * ERROR - fatal error detected, no future startup possible 13616 */ 13617static ctl_ha_comp_status 13618ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13619{ 13620 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13621 13622 printf("%s: go\n", __func__); 13623 13624 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13625 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13626 ctl_is_single = 0; 13627 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13628 != CTL_HA_STATUS_SUCCESS) { 13629 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13630 ret = CTL_HA_COMP_STATUS_ERROR; 13631 } 13632 } else if (CTL_HA_STATE_IS_HA(c->state) 13633 && CTL_HA_STATE_IS_SINGLE(state)){ 13634 // HA->SINGLE transition 13635 ctl_failover(); 13636 ctl_is_single = 1; 13637 } else { 13638 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13639 c->state, state); 13640 ret = CTL_HA_COMP_STATUS_ERROR; 13641 } 13642 if (CTL_HA_STATE_IS_SINGLE(state)) 13643 ctl_is_single = 1; 13644 13645 c->state = state; 13646 c->status = ret; 13647 return ret; 13648} 13649 13650/* 13651 * Quiesce component 13652 * The component must clear any error conditions (set status to OK) and 13653 * prepare itself to another Start call 13654 * returns ctl_ha_comp_status: 13655 * OK 13656 * ERROR 13657 */ 13658static ctl_ha_comp_status 13659ctl_isc_quiesce(struct ctl_ha_component *c) 13660{ 13661 int ret = CTL_HA_COMP_STATUS_OK; 13662 13663 ctl_pause_rtr = 1; 13664 c->status = ret; 13665 return ret; 13666} 13667 13668struct ctl_ha_component ctl_ha_component_ctlisc = 13669{ 13670 .name = "CTL ISC", 13671 .state = CTL_HA_STATE_UNKNOWN, 13672 .init = ctl_isc_init, 13673 .start = ctl_isc_start, 13674 .quiesce = ctl_isc_quiesce 13675}; 13676 13677/* 13678 * vim: ts=8 13679 */ 13680