ctl.c revision 267873
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 267873 2014-06-25 17:02:01Z mav $"); 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/types.h> 51#include <sys/kthread.h> 52#include <sys/bio.h> 53#include <sys/fcntl.h> 54#include <sys/lock.h> 55#include <sys/module.h> 56#include <sys/mutex.h> 57#include <sys/condvar.h> 58#include <sys/malloc.h> 59#include <sys/conf.h> 60#include <sys/ioccom.h> 61#include <sys/queue.h> 62#include <sys/sbuf.h> 63#include <sys/smp.h> 64#include <sys/endian.h> 65#include <sys/sysctl.h> 66 67#include <cam/cam.h> 68#include <cam/scsi/scsi_all.h> 69#include <cam/scsi/scsi_da.h> 70#include <cam/ctl/ctl_io.h> 71#include <cam/ctl/ctl.h> 72#include <cam/ctl/ctl_frontend.h> 73#include <cam/ctl/ctl_frontend_internal.h> 74#include <cam/ctl/ctl_util.h> 75#include <cam/ctl/ctl_backend.h> 76#include <cam/ctl/ctl_ioctl.h> 77#include <cam/ctl/ctl_ha.h> 78#include <cam/ctl/ctl_private.h> 79#include <cam/ctl/ctl_debug.h> 80#include <cam/ctl/ctl_scsi_all.h> 81#include <cam/ctl/ctl_error.h> 82 83struct ctl_softc *control_softc = NULL; 84 85/* 86 * Size and alignment macros needed for Copan-specific HA hardware. These 87 * can go away when the HA code is re-written, and uses busdma for any 88 * hardware. 89 */ 90#define CTL_ALIGN_8B(target, source, type) \ 91 if (((uint32_t)source & 0x7) != 0) \ 92 target = (type)(source + (0x8 - ((uint32_t)source & 0x7)));\ 93 else \ 94 target = (type)source; 95 96#define CTL_SIZE_8B(target, size) \ 97 if ((size & 0x7) != 0) \ 98 target = size + (0x8 - (size & 0x7)); \ 99 else \ 100 target = size; 101 102#define CTL_ALIGN_8B_MARGIN 16 103 104/* 105 * Template mode pages. 106 */ 107 108/* 109 * Note that these are default values only. The actual values will be 110 * filled in when the user does a mode sense. 111 */ 112static struct copan_power_subpage power_page_default = { 113 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 114 /*subpage*/ PWR_SUBPAGE_CODE, 115 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 116 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 117 /*page_version*/ PWR_VERSION, 118 /* total_luns */ 26, 119 /* max_active_luns*/ PWR_DFLT_MAX_LUNS, 120 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 121 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 122 0, 0, 0, 0, 0, 0} 123}; 124 125static struct copan_power_subpage power_page_changeable = { 126 /*page_code*/ PWR_PAGE_CODE | SMPH_SPF, 127 /*subpage*/ PWR_SUBPAGE_CODE, 128 /*page_length*/ {(sizeof(struct copan_power_subpage) - 4) & 0xff00, 129 (sizeof(struct copan_power_subpage) - 4) & 0x00ff}, 130 /*page_version*/ 0, 131 /* total_luns */ 0, 132 /* max_active_luns*/ 0, 133 /*reserved*/ {0, 0, 0, 0, 0, 0, 0, 0, 0, 134 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 135 0, 0, 0, 0, 0, 0} 136}; 137 138static struct copan_aps_subpage aps_page_default = { 139 APS_PAGE_CODE | SMPH_SPF, //page_code 140 APS_SUBPAGE_CODE, //subpage 141 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 142 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 143 APS_VERSION, //page_version 144 0, //lock_active 145 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 146 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 147 0, 0, 0, 0, 0} //reserved 148}; 149 150static struct copan_aps_subpage aps_page_changeable = { 151 APS_PAGE_CODE | SMPH_SPF, //page_code 152 APS_SUBPAGE_CODE, //subpage 153 {(sizeof(struct copan_aps_subpage) - 4) & 0xff00, 154 (sizeof(struct copan_aps_subpage) - 4) & 0x00ff}, //page_length 155 0, //page_version 156 0, //lock_active 157 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 158 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 159 0, 0, 0, 0, 0} //reserved 160}; 161 162static struct copan_debugconf_subpage debugconf_page_default = { 163 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 164 DBGCNF_SUBPAGE_CODE, /* subpage */ 165 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 166 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 167 DBGCNF_VERSION, /* page_version */ 168 {CTL_TIME_IO_DEFAULT_SECS>>8, 169 CTL_TIME_IO_DEFAULT_SECS>>0}, /* ctl_time_io_secs */ 170}; 171 172static struct copan_debugconf_subpage debugconf_page_changeable = { 173 DBGCNF_PAGE_CODE | SMPH_SPF, /* page_code */ 174 DBGCNF_SUBPAGE_CODE, /* subpage */ 175 {(sizeof(struct copan_debugconf_subpage) - 4) >> 8, 176 (sizeof(struct copan_debugconf_subpage) - 4) >> 0}, /* page_length */ 177 0, /* page_version */ 178 {0xff,0xff}, /* ctl_time_io_secs */ 179}; 180 181static struct scsi_format_page format_page_default = { 182 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 183 /*page_length*/sizeof(struct scsi_format_page) - 2, 184 /*tracks_per_zone*/ {0, 0}, 185 /*alt_sectors_per_zone*/ {0, 0}, 186 /*alt_tracks_per_zone*/ {0, 0}, 187 /*alt_tracks_per_lun*/ {0, 0}, 188 /*sectors_per_track*/ {(CTL_DEFAULT_SECTORS_PER_TRACK >> 8) & 0xff, 189 CTL_DEFAULT_SECTORS_PER_TRACK & 0xff}, 190 /*bytes_per_sector*/ {0, 0}, 191 /*interleave*/ {0, 0}, 192 /*track_skew*/ {0, 0}, 193 /*cylinder_skew*/ {0, 0}, 194 /*flags*/ SFP_HSEC, 195 /*reserved*/ {0, 0, 0} 196}; 197 198static struct scsi_format_page format_page_changeable = { 199 /*page_code*/SMS_FORMAT_DEVICE_PAGE, 200 /*page_length*/sizeof(struct scsi_format_page) - 2, 201 /*tracks_per_zone*/ {0, 0}, 202 /*alt_sectors_per_zone*/ {0, 0}, 203 /*alt_tracks_per_zone*/ {0, 0}, 204 /*alt_tracks_per_lun*/ {0, 0}, 205 /*sectors_per_track*/ {0, 0}, 206 /*bytes_per_sector*/ {0, 0}, 207 /*interleave*/ {0, 0}, 208 /*track_skew*/ {0, 0}, 209 /*cylinder_skew*/ {0, 0}, 210 /*flags*/ 0, 211 /*reserved*/ {0, 0, 0} 212}; 213 214static struct scsi_rigid_disk_page rigid_disk_page_default = { 215 /*page_code*/SMS_RIGID_DISK_PAGE, 216 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 217 /*cylinders*/ {0, 0, 0}, 218 /*heads*/ CTL_DEFAULT_HEADS, 219 /*start_write_precomp*/ {0, 0, 0}, 220 /*start_reduced_current*/ {0, 0, 0}, 221 /*step_rate*/ {0, 0}, 222 /*landing_zone_cylinder*/ {0, 0, 0}, 223 /*rpl*/ SRDP_RPL_DISABLED, 224 /*rotational_offset*/ 0, 225 /*reserved1*/ 0, 226 /*rotation_rate*/ {(CTL_DEFAULT_ROTATION_RATE >> 8) & 0xff, 227 CTL_DEFAULT_ROTATION_RATE & 0xff}, 228 /*reserved2*/ {0, 0} 229}; 230 231static struct scsi_rigid_disk_page rigid_disk_page_changeable = { 232 /*page_code*/SMS_RIGID_DISK_PAGE, 233 /*page_length*/sizeof(struct scsi_rigid_disk_page) - 2, 234 /*cylinders*/ {0, 0, 0}, 235 /*heads*/ 0, 236 /*start_write_precomp*/ {0, 0, 0}, 237 /*start_reduced_current*/ {0, 0, 0}, 238 /*step_rate*/ {0, 0}, 239 /*landing_zone_cylinder*/ {0, 0, 0}, 240 /*rpl*/ 0, 241 /*rotational_offset*/ 0, 242 /*reserved1*/ 0, 243 /*rotation_rate*/ {0, 0}, 244 /*reserved2*/ {0, 0} 245}; 246 247static struct scsi_caching_page caching_page_default = { 248 /*page_code*/SMS_CACHING_PAGE, 249 /*page_length*/sizeof(struct scsi_caching_page) - 2, 250 /*flags1*/ SCP_DISC | SCP_WCE, 251 /*ret_priority*/ 0, 252 /*disable_pf_transfer_len*/ {0xff, 0xff}, 253 /*min_prefetch*/ {0, 0}, 254 /*max_prefetch*/ {0xff, 0xff}, 255 /*max_pf_ceiling*/ {0xff, 0xff}, 256 /*flags2*/ 0, 257 /*cache_segments*/ 0, 258 /*cache_seg_size*/ {0, 0}, 259 /*reserved*/ 0, 260 /*non_cache_seg_size*/ {0, 0, 0} 261}; 262 263static struct scsi_caching_page caching_page_changeable = { 264 /*page_code*/SMS_CACHING_PAGE, 265 /*page_length*/sizeof(struct scsi_caching_page) - 2, 266 /*flags1*/ 0, 267 /*ret_priority*/ 0, 268 /*disable_pf_transfer_len*/ {0, 0}, 269 /*min_prefetch*/ {0, 0}, 270 /*max_prefetch*/ {0, 0}, 271 /*max_pf_ceiling*/ {0, 0}, 272 /*flags2*/ 0, 273 /*cache_segments*/ 0, 274 /*cache_seg_size*/ {0, 0}, 275 /*reserved*/ 0, 276 /*non_cache_seg_size*/ {0, 0, 0} 277}; 278 279static struct scsi_control_page control_page_default = { 280 /*page_code*/SMS_CONTROL_MODE_PAGE, 281 /*page_length*/sizeof(struct scsi_control_page) - 2, 282 /*rlec*/0, 283 /*queue_flags*/0, 284 /*eca_and_aen*/0, 285 /*reserved*/0, 286 /*aen_holdoff_period*/{0, 0} 287}; 288 289static struct scsi_control_page control_page_changeable = { 290 /*page_code*/SMS_CONTROL_MODE_PAGE, 291 /*page_length*/sizeof(struct scsi_control_page) - 2, 292 /*rlec*/SCP_DSENSE, 293 /*queue_flags*/0, 294 /*eca_and_aen*/0, 295 /*reserved*/0, 296 /*aen_holdoff_period*/{0, 0} 297}; 298 299 300/* 301 * XXX KDM move these into the softc. 302 */ 303static int rcv_sync_msg; 304static int persis_offset; 305static uint8_t ctl_pause_rtr; 306static int ctl_is_single = 1; 307static int index_to_aps_page; 308 309SYSCTL_NODE(_kern_cam, OID_AUTO, ctl, CTLFLAG_RD, 0, "CAM Target Layer"); 310static int worker_threads = -1; 311TUNABLE_INT("kern.cam.ctl.worker_threads", &worker_threads); 312SYSCTL_INT(_kern_cam_ctl, OID_AUTO, worker_threads, CTLFLAG_RDTUN, 313 &worker_threads, 1, "Number of worker threads"); 314static int verbose = 0; 315TUNABLE_INT("kern.cam.ctl.verbose", &verbose); 316SYSCTL_INT(_kern_cam_ctl, OID_AUTO, verbose, CTLFLAG_RWTUN, 317 &verbose, 0, "Show SCSI errors returned to initiator"); 318 319/* 320 * Serial number (0x80), device id (0x83), supported pages (0x00), 321 * Block limits (0xB0) and Logical Block Provisioning (0xB2) 322 */ 323#define SCSI_EVPD_NUM_SUPPORTED_PAGES 5 324 325static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 326 int param); 327static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 328static int ctl_init(void); 329void ctl_shutdown(void); 330static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 331static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 332static void ctl_ioctl_online(void *arg); 333static void ctl_ioctl_offline(void *arg); 334static int ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id); 335static int ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id); 336static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 337static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 338static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 339static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio); 340static int ctl_ioctl_submit_wait(union ctl_io *io); 341static void ctl_ioctl_datamove(union ctl_io *io); 342static void ctl_ioctl_done(union ctl_io *io); 343static void ctl_ioctl_hard_startstop_callback(void *arg, 344 struct cfi_metatask *metatask); 345static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 346static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 347 struct ctl_ooa *ooa_hdr, 348 struct ctl_ooa_entry *kern_entries); 349static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 350 struct thread *td); 351uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 352uint32_t ctl_port_idx(int port_num); 353#ifdef unused 354static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 355 uint32_t targ_target, uint32_t targ_lun, 356 int can_wait); 357static void ctl_kfree_io(union ctl_io *io); 358#endif /* unused */ 359static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 360 struct ctl_be_lun *be_lun, struct ctl_id target_id); 361static int ctl_free_lun(struct ctl_lun *lun); 362static void ctl_create_lun(struct ctl_be_lun *be_lun); 363/** 364static void ctl_failover_change_pages(struct ctl_softc *softc, 365 struct ctl_scsiio *ctsio, int master); 366**/ 367 368static int ctl_do_mode_select(union ctl_io *io); 369static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 370 uint64_t res_key, uint64_t sa_res_key, 371 uint8_t type, uint32_t residx, 372 struct ctl_scsiio *ctsio, 373 struct scsi_per_res_out *cdb, 374 struct scsi_per_res_out_parms* param); 375static void ctl_pro_preempt_other(struct ctl_lun *lun, 376 union ctl_ha_msg *msg); 377static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 378static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 379static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 380static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 381static int ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, 382 int alloc_len); 383static int ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len); 384static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 385static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 386static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 387static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 388static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 389 union ctl_io *ooa_io); 390static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 391 union ctl_io *starting_io); 392static int ctl_check_blocked(struct ctl_lun *lun); 393static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 394 struct ctl_lun *lun, 395 struct ctl_cmd_entry *entry, 396 struct ctl_scsiio *ctsio); 397//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 398static void ctl_failover(void); 399static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 400 struct ctl_scsiio *ctsio); 401static int ctl_scsiio(struct ctl_scsiio *ctsio); 402 403static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 404static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 405 ctl_ua_type ua_type); 406static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 407 ctl_ua_type ua_type); 408static int ctl_abort_task(union ctl_io *io); 409static void ctl_run_task(union ctl_io *io); 410#ifdef CTL_IO_DELAY 411static void ctl_datamove_timer_wakeup(void *arg); 412static void ctl_done_timer_wakeup(void *arg); 413#endif /* CTL_IO_DELAY */ 414 415static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 416static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 417static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 418static void ctl_datamove_remote_write(union ctl_io *io); 419static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 420static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 421static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 422static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 423 ctl_ha_dt_cb callback); 424static void ctl_datamove_remote_read(union ctl_io *io); 425static void ctl_datamove_remote(union ctl_io *io); 426static int ctl_process_done(union ctl_io *io); 427static void ctl_lun_thread(void *arg); 428static void ctl_work_thread(void *arg); 429static void ctl_enqueue_incoming(union ctl_io *io); 430static void ctl_enqueue_rtr(union ctl_io *io); 431static void ctl_enqueue_done(union ctl_io *io); 432static void ctl_enqueue_isc(union ctl_io *io); 433 434/* 435 * Load the serialization table. This isn't very pretty, but is probably 436 * the easiest way to do it. 437 */ 438#include "ctl_ser_table.c" 439 440/* 441 * We only need to define open, close and ioctl routines for this driver. 442 */ 443static struct cdevsw ctl_cdevsw = { 444 .d_version = D_VERSION, 445 .d_flags = 0, 446 .d_open = ctl_open, 447 .d_close = ctl_close, 448 .d_ioctl = ctl_ioctl, 449 .d_name = "ctl", 450}; 451 452 453MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 454 455static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 456 457static moduledata_t ctl_moduledata = { 458 "ctl", 459 ctl_module_event_handler, 460 NULL 461}; 462 463DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 464MODULE_VERSION(ctl, 1); 465 466static void 467ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 468 union ctl_ha_msg *msg_info) 469{ 470 struct ctl_scsiio *ctsio; 471 472 if (msg_info->hdr.original_sc == NULL) { 473 printf("%s: original_sc == NULL!\n", __func__); 474 /* XXX KDM now what? */ 475 return; 476 } 477 478 ctsio = &msg_info->hdr.original_sc->scsiio; 479 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 480 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 481 ctsio->io_hdr.status = msg_info->hdr.status; 482 ctsio->scsi_status = msg_info->scsi.scsi_status; 483 ctsio->sense_len = msg_info->scsi.sense_len; 484 ctsio->sense_residual = msg_info->scsi.sense_residual; 485 ctsio->residual = msg_info->scsi.residual; 486 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 487 sizeof(ctsio->sense_data)); 488 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 489 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 490 ctl_enqueue_isc((union ctl_io *)ctsio); 491} 492 493static void 494ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 495 union ctl_ha_msg *msg_info) 496{ 497 struct ctl_scsiio *ctsio; 498 499 if (msg_info->hdr.serializing_sc == NULL) { 500 printf("%s: serializing_sc == NULL!\n", __func__); 501 /* XXX KDM now what? */ 502 return; 503 } 504 505 ctsio = &msg_info->hdr.serializing_sc->scsiio; 506#if 0 507 /* 508 * Attempt to catch the situation where an I/O has 509 * been freed, and we're using it again. 510 */ 511 if (ctsio->io_hdr.io_type == 0xff) { 512 union ctl_io *tmp_io; 513 tmp_io = (union ctl_io *)ctsio; 514 printf("%s: %p use after free!\n", __func__, 515 ctsio); 516 printf("%s: type %d msg %d cdb %x iptl: " 517 "%d:%d:%d:%d tag 0x%04x " 518 "flag %#x status %x\n", 519 __func__, 520 tmp_io->io_hdr.io_type, 521 tmp_io->io_hdr.msg_type, 522 tmp_io->scsiio.cdb[0], 523 tmp_io->io_hdr.nexus.initid.id, 524 tmp_io->io_hdr.nexus.targ_port, 525 tmp_io->io_hdr.nexus.targ_target.id, 526 tmp_io->io_hdr.nexus.targ_lun, 527 (tmp_io->io_hdr.io_type == 528 CTL_IO_TASK) ? 529 tmp_io->taskio.tag_num : 530 tmp_io->scsiio.tag_num, 531 tmp_io->io_hdr.flags, 532 tmp_io->io_hdr.status); 533 } 534#endif 535 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 536 ctl_enqueue_isc((union ctl_io *)ctsio); 537} 538 539/* 540 * ISC (Inter Shelf Communication) event handler. Events from the HA 541 * subsystem come in here. 542 */ 543static void 544ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 545{ 546 struct ctl_softc *ctl_softc; 547 union ctl_io *io; 548 struct ctl_prio *presio; 549 ctl_ha_status isc_status; 550 551 ctl_softc = control_softc; 552 io = NULL; 553 554 555#if 0 556 printf("CTL: Isc Msg event %d\n", event); 557#endif 558 if (event == CTL_HA_EVT_MSG_RECV) { 559 union ctl_ha_msg msg_info; 560 561 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 562 sizeof(msg_info), /*wait*/ 0); 563#if 0 564 printf("CTL: msg_type %d\n", msg_info.msg_type); 565#endif 566 if (isc_status != 0) { 567 printf("Error receiving message, status = %d\n", 568 isc_status); 569 return; 570 } 571 572 switch (msg_info.hdr.msg_type) { 573 case CTL_MSG_SERIALIZE: 574#if 0 575 printf("Serialize\n"); 576#endif 577 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 578 if (io == NULL) { 579 printf("ctl_isc_event_handler: can't allocate " 580 "ctl_io!\n"); 581 /* Bad Juju */ 582 /* Need to set busy and send msg back */ 583 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 584 msg_info.hdr.status = CTL_SCSI_ERROR; 585 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 586 msg_info.scsi.sense_len = 0; 587 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 588 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 589 } 590 goto bailout; 591 } 592 ctl_zero_io(io); 593 // populate ctsio from msg_info 594 io->io_hdr.io_type = CTL_IO_SCSI; 595 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 596 io->io_hdr.original_sc = msg_info.hdr.original_sc; 597#if 0 598 printf("pOrig %x\n", (int)msg_info.original_sc); 599#endif 600 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 601 CTL_FLAG_IO_ACTIVE; 602 /* 603 * If we're in serialization-only mode, we don't 604 * want to go through full done processing. Thus 605 * the COPY flag. 606 * 607 * XXX KDM add another flag that is more specific. 608 */ 609 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 610 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 611 io->io_hdr.nexus = msg_info.hdr.nexus; 612#if 0 613 printf("targ %d, port %d, iid %d, lun %d\n", 614 io->io_hdr.nexus.targ_target.id, 615 io->io_hdr.nexus.targ_port, 616 io->io_hdr.nexus.initid.id, 617 io->io_hdr.nexus.targ_lun); 618#endif 619 io->scsiio.tag_num = msg_info.scsi.tag_num; 620 io->scsiio.tag_type = msg_info.scsi.tag_type; 621 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 622 CTL_MAX_CDBLEN); 623 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 624 struct ctl_cmd_entry *entry; 625 uint8_t opcode; 626 627 opcode = io->scsiio.cdb[0]; 628 entry = &ctl_cmd_table[opcode]; 629 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 630 io->io_hdr.flags |= 631 entry->flags & CTL_FLAG_DATA_MASK; 632 } 633 ctl_enqueue_isc(io); 634 break; 635 636 /* Performed on the Originating SC, XFER mode only */ 637 case CTL_MSG_DATAMOVE: { 638 struct ctl_sg_entry *sgl; 639 int i, j; 640 641 io = msg_info.hdr.original_sc; 642 if (io == NULL) { 643 printf("%s: original_sc == NULL!\n", __func__); 644 /* XXX KDM do something here */ 645 break; 646 } 647 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 648 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 649 /* 650 * Keep track of this, we need to send it back over 651 * when the datamove is complete. 652 */ 653 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 654 655 if (msg_info.dt.sg_sequence == 0) { 656 /* 657 * XXX KDM we use the preallocated S/G list 658 * here, but we'll need to change this to 659 * dynamic allocation if we need larger S/G 660 * lists. 661 */ 662 if (msg_info.dt.kern_sg_entries > 663 sizeof(io->io_hdr.remote_sglist) / 664 sizeof(io->io_hdr.remote_sglist[0])) { 665 printf("%s: number of S/G entries " 666 "needed %u > allocated num %zd\n", 667 __func__, 668 msg_info.dt.kern_sg_entries, 669 sizeof(io->io_hdr.remote_sglist)/ 670 sizeof(io->io_hdr.remote_sglist[0])); 671 672 /* 673 * XXX KDM send a message back to 674 * the other side to shut down the 675 * DMA. The error will come back 676 * through via the normal channel. 677 */ 678 break; 679 } 680 sgl = io->io_hdr.remote_sglist; 681 memset(sgl, 0, 682 sizeof(io->io_hdr.remote_sglist)); 683 684 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 685 686 io->scsiio.kern_sg_entries = 687 msg_info.dt.kern_sg_entries; 688 io->scsiio.rem_sg_entries = 689 msg_info.dt.kern_sg_entries; 690 io->scsiio.kern_data_len = 691 msg_info.dt.kern_data_len; 692 io->scsiio.kern_total_len = 693 msg_info.dt.kern_total_len; 694 io->scsiio.kern_data_resid = 695 msg_info.dt.kern_data_resid; 696 io->scsiio.kern_rel_offset = 697 msg_info.dt.kern_rel_offset; 698 /* 699 * Clear out per-DMA flags. 700 */ 701 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 702 /* 703 * Add per-DMA flags that are set for this 704 * particular DMA request. 705 */ 706 io->io_hdr.flags |= msg_info.dt.flags & 707 CTL_FLAG_RDMA_MASK; 708 } else 709 sgl = (struct ctl_sg_entry *) 710 io->scsiio.kern_data_ptr; 711 712 for (i = msg_info.dt.sent_sg_entries, j = 0; 713 i < (msg_info.dt.sent_sg_entries + 714 msg_info.dt.cur_sg_entries); i++, j++) { 715 sgl[i].addr = msg_info.dt.sg_list[j].addr; 716 sgl[i].len = msg_info.dt.sg_list[j].len; 717 718#if 0 719 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 720 __func__, 721 msg_info.dt.sg_list[j].addr, 722 msg_info.dt.sg_list[j].len, 723 sgl[i].addr, sgl[i].len, j, i); 724#endif 725 } 726#if 0 727 memcpy(&sgl[msg_info.dt.sent_sg_entries], 728 msg_info.dt.sg_list, 729 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 730#endif 731 732 /* 733 * If this is the last piece of the I/O, we've got 734 * the full S/G list. Queue processing in the thread. 735 * Otherwise wait for the next piece. 736 */ 737 if (msg_info.dt.sg_last != 0) 738 ctl_enqueue_isc(io); 739 break; 740 } 741 /* Performed on the Serializing (primary) SC, XFER mode only */ 742 case CTL_MSG_DATAMOVE_DONE: { 743 if (msg_info.hdr.serializing_sc == NULL) { 744 printf("%s: serializing_sc == NULL!\n", 745 __func__); 746 /* XXX KDM now what? */ 747 break; 748 } 749 /* 750 * We grab the sense information here in case 751 * there was a failure, so we can return status 752 * back to the initiator. 753 */ 754 io = msg_info.hdr.serializing_sc; 755 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 756 io->io_hdr.status = msg_info.hdr.status; 757 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 758 io->scsiio.sense_len = msg_info.scsi.sense_len; 759 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 760 io->io_hdr.port_status = msg_info.scsi.fetd_status; 761 io->scsiio.residual = msg_info.scsi.residual; 762 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 763 sizeof(io->scsiio.sense_data)); 764 ctl_enqueue_isc(io); 765 break; 766 } 767 768 /* Preformed on Originating SC, SER_ONLY mode */ 769 case CTL_MSG_R2R: 770 io = msg_info.hdr.original_sc; 771 if (io == NULL) { 772 printf("%s: Major Bummer\n", __func__); 773 return; 774 } else { 775#if 0 776 printf("pOrig %x\n",(int) ctsio); 777#endif 778 } 779 io->io_hdr.msg_type = CTL_MSG_R2R; 780 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 781 ctl_enqueue_isc(io); 782 break; 783 784 /* 785 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 786 * mode. 787 * Performed on the Originating (i.e. secondary) SC in XFER 788 * mode 789 */ 790 case CTL_MSG_FINISH_IO: 791 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 792 ctl_isc_handler_finish_xfer(ctl_softc, 793 &msg_info); 794 else 795 ctl_isc_handler_finish_ser_only(ctl_softc, 796 &msg_info); 797 break; 798 799 /* Preformed on Originating SC */ 800 case CTL_MSG_BAD_JUJU: 801 io = msg_info.hdr.original_sc; 802 if (io == NULL) { 803 printf("%s: Bad JUJU!, original_sc is NULL!\n", 804 __func__); 805 break; 806 } 807 ctl_copy_sense_data(&msg_info, io); 808 /* 809 * IO should have already been cleaned up on other 810 * SC so clear this flag so we won't send a message 811 * back to finish the IO there. 812 */ 813 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 814 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 815 816 /* io = msg_info.hdr.serializing_sc; */ 817 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 818 ctl_enqueue_isc(io); 819 break; 820 821 /* Handle resets sent from the other side */ 822 case CTL_MSG_MANAGE_TASKS: { 823 struct ctl_taskio *taskio; 824 taskio = (struct ctl_taskio *)ctl_alloc_io( 825 (void *)ctl_softc->othersc_pool); 826 if (taskio == NULL) { 827 printf("ctl_isc_event_handler: can't allocate " 828 "ctl_io!\n"); 829 /* Bad Juju */ 830 /* should I just call the proper reset func 831 here??? */ 832 goto bailout; 833 } 834 ctl_zero_io((union ctl_io *)taskio); 835 taskio->io_hdr.io_type = CTL_IO_TASK; 836 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 837 taskio->io_hdr.nexus = msg_info.hdr.nexus; 838 taskio->task_action = msg_info.task.task_action; 839 taskio->tag_num = msg_info.task.tag_num; 840 taskio->tag_type = msg_info.task.tag_type; 841#ifdef CTL_TIME_IO 842 taskio->io_hdr.start_time = time_uptime; 843 getbintime(&taskio->io_hdr.start_bt); 844#if 0 845 cs_prof_gettime(&taskio->io_hdr.start_ticks); 846#endif 847#endif /* CTL_TIME_IO */ 848 ctl_run_task((union ctl_io *)taskio); 849 break; 850 } 851 /* Persistent Reserve action which needs attention */ 852 case CTL_MSG_PERS_ACTION: 853 presio = (struct ctl_prio *)ctl_alloc_io( 854 (void *)ctl_softc->othersc_pool); 855 if (presio == NULL) { 856 printf("ctl_isc_event_handler: can't allocate " 857 "ctl_io!\n"); 858 /* Bad Juju */ 859 /* Need to set busy and send msg back */ 860 goto bailout; 861 } 862 ctl_zero_io((union ctl_io *)presio); 863 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 864 presio->pr_msg = msg_info.pr; 865 ctl_enqueue_isc((union ctl_io *)presio); 866 break; 867 case CTL_MSG_SYNC_FE: 868 rcv_sync_msg = 1; 869 break; 870 case CTL_MSG_APS_LOCK: { 871 // It's quicker to execute this then to 872 // queue it. 873 struct ctl_lun *lun; 874 struct ctl_page_index *page_index; 875 struct copan_aps_subpage *current_sp; 876 uint32_t targ_lun; 877 878 targ_lun = msg_info.hdr.nexus.targ_mapped_lun; 879 lun = ctl_softc->ctl_luns[targ_lun]; 880 mtx_lock(&lun->lun_lock); 881 page_index = &lun->mode_pages.index[index_to_aps_page]; 882 current_sp = (struct copan_aps_subpage *) 883 (page_index->page_data + 884 (page_index->page_len * CTL_PAGE_CURRENT)); 885 886 current_sp->lock_active = msg_info.aps.lock_flag; 887 mtx_unlock(&lun->lun_lock); 888 break; 889 } 890 default: 891 printf("How did I get here?\n"); 892 } 893 } else if (event == CTL_HA_EVT_MSG_SENT) { 894 if (param != CTL_HA_STATUS_SUCCESS) { 895 printf("Bad status from ctl_ha_msg_send status %d\n", 896 param); 897 } 898 return; 899 } else if (event == CTL_HA_EVT_DISCONNECT) { 900 printf("CTL: Got a disconnect from Isc\n"); 901 return; 902 } else { 903 printf("ctl_isc_event_handler: Unknown event %d\n", event); 904 return; 905 } 906 907bailout: 908 return; 909} 910 911static void 912ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 913{ 914 struct scsi_sense_data *sense; 915 916 sense = &dest->scsiio.sense_data; 917 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 918 dest->scsiio.scsi_status = src->scsi.scsi_status; 919 dest->scsiio.sense_len = src->scsi.sense_len; 920 dest->io_hdr.status = src->hdr.status; 921} 922 923static int 924ctl_init(void) 925{ 926 struct ctl_softc *softc; 927 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 928 struct ctl_frontend *fe; 929 uint8_t sc_id =0; 930 int i, error, retval; 931 //int isc_retval; 932 933 retval = 0; 934 ctl_pause_rtr = 0; 935 rcv_sync_msg = 0; 936 937 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 938 M_WAITOK | M_ZERO); 939 softc = control_softc; 940 941 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 942 "cam/ctl"); 943 944 softc->dev->si_drv1 = softc; 945 946 /* 947 * By default, return a "bad LUN" peripheral qualifier for unknown 948 * LUNs. The user can override this default using the tunable or 949 * sysctl. See the comment in ctl_inquiry_std() for more details. 950 */ 951 softc->inquiry_pq_no_lun = 1; 952 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 953 &softc->inquiry_pq_no_lun); 954 sysctl_ctx_init(&softc->sysctl_ctx); 955 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 956 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 957 CTLFLAG_RD, 0, "CAM Target Layer"); 958 959 if (softc->sysctl_tree == NULL) { 960 printf("%s: unable to allocate sysctl tree\n", __func__); 961 destroy_dev(softc->dev); 962 free(control_softc, M_DEVBUF); 963 control_softc = NULL; 964 return (ENOMEM); 965 } 966 967 SYSCTL_ADD_INT(&softc->sysctl_ctx, 968 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 969 "inquiry_pq_no_lun", CTLFLAG_RW, 970 &softc->inquiry_pq_no_lun, 0, 971 "Report no lun possible for invalid LUNs"); 972 973 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 974 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 975 softc->open_count = 0; 976 977 /* 978 * Default to actually sending a SYNCHRONIZE CACHE command down to 979 * the drive. 980 */ 981 softc->flags = CTL_FLAG_REAL_SYNC; 982 983 /* 984 * In Copan's HA scheme, the "master" and "slave" roles are 985 * figured out through the slot the controller is in. Although it 986 * is an active/active system, someone has to be in charge. 987 */ 988#ifdef NEEDTOPORT 989 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 990#endif 991 992 if (sc_id == 0) { 993 softc->flags |= CTL_FLAG_MASTER_SHELF; 994 persis_offset = 0; 995 } else 996 persis_offset = CTL_MAX_INITIATORS; 997 998 /* 999 * XXX KDM need to figure out where we want to get our target ID 1000 * and WWID. Is it different on each port? 1001 */ 1002 softc->target.id = 0; 1003 softc->target.wwid[0] = 0x12345678; 1004 softc->target.wwid[1] = 0x87654321; 1005 STAILQ_INIT(&softc->lun_list); 1006 STAILQ_INIT(&softc->pending_lun_queue); 1007 STAILQ_INIT(&softc->fe_list); 1008 STAILQ_INIT(&softc->be_list); 1009 STAILQ_INIT(&softc->io_pools); 1010 1011 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1012 &internal_pool)!= 0){ 1013 printf("ctl: can't allocate %d entry internal pool, " 1014 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1015 return (ENOMEM); 1016 } 1017 1018 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1019 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1020 printf("ctl: can't allocate %d entry emergency pool, " 1021 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1022 ctl_pool_free(internal_pool); 1023 return (ENOMEM); 1024 } 1025 1026 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1027 &other_pool) != 0) 1028 { 1029 printf("ctl: can't allocate %d entry other SC pool, " 1030 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1031 ctl_pool_free(internal_pool); 1032 ctl_pool_free(emergency_pool); 1033 return (ENOMEM); 1034 } 1035 1036 softc->internal_pool = internal_pool; 1037 softc->emergency_pool = emergency_pool; 1038 softc->othersc_pool = other_pool; 1039 1040 if (worker_threads <= 0) 1041 worker_threads = max(1, mp_ncpus / 4); 1042 if (worker_threads > CTL_MAX_THREADS) 1043 worker_threads = CTL_MAX_THREADS; 1044 1045 for (i = 0; i < worker_threads; i++) { 1046 struct ctl_thread *thr = &softc->threads[i]; 1047 1048 mtx_init(&thr->queue_lock, "CTL queue mutex", NULL, MTX_DEF); 1049 thr->ctl_softc = softc; 1050 STAILQ_INIT(&thr->incoming_queue); 1051 STAILQ_INIT(&thr->rtr_queue); 1052 STAILQ_INIT(&thr->done_queue); 1053 STAILQ_INIT(&thr->isc_queue); 1054 1055 error = kproc_kthread_add(ctl_work_thread, thr, 1056 &softc->ctl_proc, &thr->thread, 0, 0, "ctl", "work%d", i); 1057 if (error != 0) { 1058 printf("error creating CTL work thread!\n"); 1059 ctl_pool_free(internal_pool); 1060 ctl_pool_free(emergency_pool); 1061 ctl_pool_free(other_pool); 1062 return (error); 1063 } 1064 } 1065 error = kproc_kthread_add(ctl_lun_thread, softc, 1066 &softc->ctl_proc, NULL, 0, 0, "ctl", "lun"); 1067 if (error != 0) { 1068 printf("error creating CTL lun thread!\n"); 1069 ctl_pool_free(internal_pool); 1070 ctl_pool_free(emergency_pool); 1071 ctl_pool_free(other_pool); 1072 return (error); 1073 } 1074 if (bootverbose) 1075 printf("ctl: CAM Target Layer loaded\n"); 1076 1077 /* 1078 * Initialize the initiator and portname mappings 1079 */ 1080 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1081 1082 /* 1083 * Initialize the ioctl front end. 1084 */ 1085 fe = &softc->ioctl_info.fe; 1086 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1087 fe->port_type = CTL_PORT_IOCTL; 1088 fe->num_requested_ctl_io = 100; 1089 fe->port_name = softc->ioctl_info.port_name; 1090 fe->port_online = ctl_ioctl_online; 1091 fe->port_offline = ctl_ioctl_offline; 1092 fe->onoff_arg = &softc->ioctl_info; 1093 fe->targ_enable = ctl_ioctl_targ_enable; 1094 fe->targ_disable = ctl_ioctl_targ_disable; 1095 fe->lun_enable = ctl_ioctl_lun_enable; 1096 fe->lun_disable = ctl_ioctl_lun_disable; 1097 fe->targ_lun_arg = &softc->ioctl_info; 1098 fe->fe_datamove = ctl_ioctl_datamove; 1099 fe->fe_done = ctl_ioctl_done; 1100 fe->max_targets = 15; 1101 fe->max_target_id = 15; 1102 1103 if (ctl_frontend_register(&softc->ioctl_info.fe, 1104 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1105 printf("ctl: ioctl front end registration failed, will " 1106 "continue anyway\n"); 1107 } 1108 1109#ifdef CTL_IO_DELAY 1110 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1111 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1112 sizeof(struct callout), CTL_TIMER_BYTES); 1113 return (EINVAL); 1114 } 1115#endif /* CTL_IO_DELAY */ 1116 1117 return (0); 1118} 1119 1120void 1121ctl_shutdown(void) 1122{ 1123 struct ctl_softc *softc; 1124 struct ctl_lun *lun, *next_lun; 1125 struct ctl_io_pool *pool; 1126 1127 softc = (struct ctl_softc *)control_softc; 1128 1129 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1130 printf("ctl: ioctl front end deregistration failed\n"); 1131 1132 mtx_lock(&softc->ctl_lock); 1133 1134 /* 1135 * Free up each LUN. 1136 */ 1137 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1138 next_lun = STAILQ_NEXT(lun, links); 1139 ctl_free_lun(lun); 1140 } 1141 1142 mtx_unlock(&softc->ctl_lock); 1143 1144 /* 1145 * This will rip the rug out from under any FETDs or anyone else 1146 * that has a pool allocated. Since we increment our module 1147 * refcount any time someone outside the main CTL module allocates 1148 * a pool, we shouldn't have any problems here. The user won't be 1149 * able to unload the CTL module until client modules have 1150 * successfully unloaded. 1151 */ 1152 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1153 ctl_pool_free(pool); 1154 1155#if 0 1156 ctl_shutdown_thread(softc->work_thread); 1157 mtx_destroy(&softc->queue_lock); 1158#endif 1159 1160 mtx_destroy(&softc->pool_lock); 1161 mtx_destroy(&softc->ctl_lock); 1162 1163 destroy_dev(softc->dev); 1164 1165 sysctl_ctx_free(&softc->sysctl_ctx); 1166 1167 free(control_softc, M_DEVBUF); 1168 control_softc = NULL; 1169 1170 if (bootverbose) 1171 printf("ctl: CAM Target Layer unloaded\n"); 1172} 1173 1174static int 1175ctl_module_event_handler(module_t mod, int what, void *arg) 1176{ 1177 1178 switch (what) { 1179 case MOD_LOAD: 1180 return (ctl_init()); 1181 case MOD_UNLOAD: 1182 return (EBUSY); 1183 default: 1184 return (EOPNOTSUPP); 1185 } 1186} 1187 1188/* 1189 * XXX KDM should we do some access checks here? Bump a reference count to 1190 * prevent a CTL module from being unloaded while someone has it open? 1191 */ 1192static int 1193ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1194{ 1195 return (0); 1196} 1197 1198static int 1199ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1200{ 1201 return (0); 1202} 1203 1204int 1205ctl_port_enable(ctl_port_type port_type) 1206{ 1207 struct ctl_softc *softc; 1208 struct ctl_frontend *fe; 1209 1210 if (ctl_is_single == 0) { 1211 union ctl_ha_msg msg_info; 1212 int isc_retval; 1213 1214#if 0 1215 printf("%s: HA mode, synchronizing frontend enable\n", 1216 __func__); 1217#endif 1218 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1219 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1220 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1221 printf("Sync msg send error retval %d\n", isc_retval); 1222 } 1223 if (!rcv_sync_msg) { 1224 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1225 sizeof(msg_info), 1); 1226 } 1227#if 0 1228 printf("CTL:Frontend Enable\n"); 1229 } else { 1230 printf("%s: single mode, skipping frontend synchronization\n", 1231 __func__); 1232#endif 1233 } 1234 1235 softc = control_softc; 1236 1237 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1238 if (port_type & fe->port_type) 1239 { 1240#if 0 1241 printf("port %d\n", fe->targ_port); 1242#endif 1243 ctl_frontend_online(fe); 1244 } 1245 } 1246 1247 return (0); 1248} 1249 1250int 1251ctl_port_disable(ctl_port_type port_type) 1252{ 1253 struct ctl_softc *softc; 1254 struct ctl_frontend *fe; 1255 1256 softc = control_softc; 1257 1258 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1259 if (port_type & fe->port_type) 1260 ctl_frontend_offline(fe); 1261 } 1262 1263 return (0); 1264} 1265 1266/* 1267 * Returns 0 for success, 1 for failure. 1268 * Currently the only failure mode is if there aren't enough entries 1269 * allocated. So, in case of a failure, look at num_entries_dropped, 1270 * reallocate and try again. 1271 */ 1272int 1273ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1274 int *num_entries_filled, int *num_entries_dropped, 1275 ctl_port_type port_type, int no_virtual) 1276{ 1277 struct ctl_softc *softc; 1278 struct ctl_frontend *fe; 1279 int entries_dropped, entries_filled; 1280 int retval; 1281 int i; 1282 1283 softc = control_softc; 1284 1285 retval = 0; 1286 entries_filled = 0; 1287 entries_dropped = 0; 1288 1289 i = 0; 1290 mtx_lock(&softc->ctl_lock); 1291 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1292 struct ctl_port_entry *entry; 1293 1294 if ((fe->port_type & port_type) == 0) 1295 continue; 1296 1297 if ((no_virtual != 0) 1298 && (fe->virtual_port != 0)) 1299 continue; 1300 1301 if (entries_filled >= num_entries_alloced) { 1302 entries_dropped++; 1303 continue; 1304 } 1305 entry = &entries[i]; 1306 1307 entry->port_type = fe->port_type; 1308 strlcpy(entry->port_name, fe->port_name, 1309 sizeof(entry->port_name)); 1310 entry->physical_port = fe->physical_port; 1311 entry->virtual_port = fe->virtual_port; 1312 entry->wwnn = fe->wwnn; 1313 entry->wwpn = fe->wwpn; 1314 1315 i++; 1316 entries_filled++; 1317 } 1318 1319 mtx_unlock(&softc->ctl_lock); 1320 1321 if (entries_dropped > 0) 1322 retval = 1; 1323 1324 *num_entries_dropped = entries_dropped; 1325 *num_entries_filled = entries_filled; 1326 1327 return (retval); 1328} 1329 1330static void 1331ctl_ioctl_online(void *arg) 1332{ 1333 struct ctl_ioctl_info *ioctl_info; 1334 1335 ioctl_info = (struct ctl_ioctl_info *)arg; 1336 1337 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1338} 1339 1340static void 1341ctl_ioctl_offline(void *arg) 1342{ 1343 struct ctl_ioctl_info *ioctl_info; 1344 1345 ioctl_info = (struct ctl_ioctl_info *)arg; 1346 1347 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1348} 1349 1350/* 1351 * Remove an initiator by port number and initiator ID. 1352 * Returns 0 for success, 1 for failure. 1353 */ 1354int 1355ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1356{ 1357 struct ctl_softc *softc; 1358 1359 softc = control_softc; 1360 1361 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1362 1363 if ((targ_port < 0) 1364 || (targ_port > CTL_MAX_PORTS)) { 1365 printf("%s: invalid port number %d\n", __func__, targ_port); 1366 return (1); 1367 } 1368 if (iid > CTL_MAX_INIT_PER_PORT) { 1369 printf("%s: initiator ID %u > maximun %u!\n", 1370 __func__, iid, CTL_MAX_INIT_PER_PORT); 1371 return (1); 1372 } 1373 1374 mtx_lock(&softc->ctl_lock); 1375 1376 softc->wwpn_iid[targ_port][iid].in_use = 0; 1377 1378 mtx_unlock(&softc->ctl_lock); 1379 1380 return (0); 1381} 1382 1383/* 1384 * Add an initiator to the initiator map. 1385 * Returns 0 for success, 1 for failure. 1386 */ 1387int 1388ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1389{ 1390 struct ctl_softc *softc; 1391 int retval; 1392 1393 softc = control_softc; 1394 1395 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1396 1397 retval = 0; 1398 1399 if ((targ_port < 0) 1400 || (targ_port > CTL_MAX_PORTS)) { 1401 printf("%s: invalid port number %d\n", __func__, targ_port); 1402 return (1); 1403 } 1404 if (iid > CTL_MAX_INIT_PER_PORT) { 1405 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1406 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1407 return (1); 1408 } 1409 1410 mtx_lock(&softc->ctl_lock); 1411 1412 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1413 /* 1414 * We don't treat this as an error. 1415 */ 1416 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1417 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1418 __func__, targ_port, iid, (uintmax_t)wwpn); 1419 goto bailout; 1420 } 1421 1422 /* 1423 * This is an error, but what do we do about it? The 1424 * driver is telling us we have a new WWPN for this 1425 * initiator ID, so we pretty much need to use it. 1426 */ 1427 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1428 "still at that address\n", __func__, targ_port, iid, 1429 (uintmax_t)wwpn, 1430 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1431 1432 /* 1433 * XXX KDM clear have_ca and ua_pending on each LUN for 1434 * this initiator. 1435 */ 1436 } 1437 softc->wwpn_iid[targ_port][iid].in_use = 1; 1438 softc->wwpn_iid[targ_port][iid].iid = iid; 1439 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1440 softc->wwpn_iid[targ_port][iid].port = targ_port; 1441 1442bailout: 1443 1444 mtx_unlock(&softc->ctl_lock); 1445 1446 return (retval); 1447} 1448 1449/* 1450 * XXX KDM should we pretend to do something in the target/lun 1451 * enable/disable functions? 1452 */ 1453static int 1454ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1455{ 1456 return (0); 1457} 1458 1459static int 1460ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1461{ 1462 return (0); 1463} 1464 1465static int 1466ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1467{ 1468 return (0); 1469} 1470 1471static int 1472ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1473{ 1474 return (0); 1475} 1476 1477/* 1478 * Data movement routine for the CTL ioctl frontend port. 1479 */ 1480static int 1481ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1482{ 1483 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1484 struct ctl_sg_entry ext_entry, kern_entry; 1485 int ext_sglen, ext_sg_entries, kern_sg_entries; 1486 int ext_sg_start, ext_offset; 1487 int len_to_copy, len_copied; 1488 int kern_watermark, ext_watermark; 1489 int ext_sglist_malloced; 1490 int i, j; 1491 1492 ext_sglist_malloced = 0; 1493 ext_sg_start = 0; 1494 ext_offset = 0; 1495 1496 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1497 1498 /* 1499 * If this flag is set, fake the data transfer. 1500 */ 1501 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1502 ctsio->ext_data_filled = ctsio->ext_data_len; 1503 goto bailout; 1504 } 1505 1506 /* 1507 * To simplify things here, if we have a single buffer, stick it in 1508 * a S/G entry and just make it a single entry S/G list. 1509 */ 1510 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1511 int len_seen; 1512 1513 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1514 1515 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1516 M_WAITOK); 1517 ext_sglist_malloced = 1; 1518 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1519 ext_sglen) != 0) { 1520 ctl_set_internal_failure(ctsio, 1521 /*sks_valid*/ 0, 1522 /*retry_count*/ 0); 1523 goto bailout; 1524 } 1525 ext_sg_entries = ctsio->ext_sg_entries; 1526 len_seen = 0; 1527 for (i = 0; i < ext_sg_entries; i++) { 1528 if ((len_seen + ext_sglist[i].len) >= 1529 ctsio->ext_data_filled) { 1530 ext_sg_start = i; 1531 ext_offset = ctsio->ext_data_filled - len_seen; 1532 break; 1533 } 1534 len_seen += ext_sglist[i].len; 1535 } 1536 } else { 1537 ext_sglist = &ext_entry; 1538 ext_sglist->addr = ctsio->ext_data_ptr; 1539 ext_sglist->len = ctsio->ext_data_len; 1540 ext_sg_entries = 1; 1541 ext_sg_start = 0; 1542 ext_offset = ctsio->ext_data_filled; 1543 } 1544 1545 if (ctsio->kern_sg_entries > 0) { 1546 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1547 kern_sg_entries = ctsio->kern_sg_entries; 1548 } else { 1549 kern_sglist = &kern_entry; 1550 kern_sglist->addr = ctsio->kern_data_ptr; 1551 kern_sglist->len = ctsio->kern_data_len; 1552 kern_sg_entries = 1; 1553 } 1554 1555 1556 kern_watermark = 0; 1557 ext_watermark = ext_offset; 1558 len_copied = 0; 1559 for (i = ext_sg_start, j = 0; 1560 i < ext_sg_entries && j < kern_sg_entries;) { 1561 uint8_t *ext_ptr, *kern_ptr; 1562 1563 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1564 kern_sglist[j].len - kern_watermark); 1565 1566 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1567 ext_ptr = ext_ptr + ext_watermark; 1568 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1569 /* 1570 * XXX KDM fix this! 1571 */ 1572 panic("need to implement bus address support"); 1573#if 0 1574 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1575#endif 1576 } else 1577 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1578 kern_ptr = kern_ptr + kern_watermark; 1579 1580 kern_watermark += len_to_copy; 1581 ext_watermark += len_to_copy; 1582 1583 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1584 CTL_FLAG_DATA_IN) { 1585 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1586 "bytes to user\n", len_to_copy)); 1587 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1588 "to %p\n", kern_ptr, ext_ptr)); 1589 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1590 ctl_set_internal_failure(ctsio, 1591 /*sks_valid*/ 0, 1592 /*retry_count*/ 0); 1593 goto bailout; 1594 } 1595 } else { 1596 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1597 "bytes from user\n", len_to_copy)); 1598 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1599 "to %p\n", ext_ptr, kern_ptr)); 1600 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1601 ctl_set_internal_failure(ctsio, 1602 /*sks_valid*/ 0, 1603 /*retry_count*/0); 1604 goto bailout; 1605 } 1606 } 1607 1608 len_copied += len_to_copy; 1609 1610 if (ext_sglist[i].len == ext_watermark) { 1611 i++; 1612 ext_watermark = 0; 1613 } 1614 1615 if (kern_sglist[j].len == kern_watermark) { 1616 j++; 1617 kern_watermark = 0; 1618 } 1619 } 1620 1621 ctsio->ext_data_filled += len_copied; 1622 1623 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1624 "kern_sg_entries: %d\n", ext_sg_entries, 1625 kern_sg_entries)); 1626 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1627 "kern_data_len = %d\n", ctsio->ext_data_len, 1628 ctsio->kern_data_len)); 1629 1630 1631 /* XXX KDM set residual?? */ 1632bailout: 1633 1634 if (ext_sglist_malloced != 0) 1635 free(ext_sglist, M_CTL); 1636 1637 return (CTL_RETVAL_COMPLETE); 1638} 1639 1640/* 1641 * Serialize a command that went down the "wrong" side, and so was sent to 1642 * this controller for execution. The logic is a little different than the 1643 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1644 * sent back to the other side, but in the success case, we execute the 1645 * command on this side (XFER mode) or tell the other side to execute it 1646 * (SER_ONLY mode). 1647 */ 1648static int 1649ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio) 1650{ 1651 struct ctl_softc *ctl_softc; 1652 union ctl_ha_msg msg_info; 1653 struct ctl_lun *lun; 1654 int retval = 0; 1655 uint32_t targ_lun; 1656 1657 ctl_softc = control_softc; 1658 1659 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 1660 lun = ctl_softc->ctl_luns[targ_lun]; 1661 if (lun==NULL) 1662 { 1663 /* 1664 * Why isn't LUN defined? The other side wouldn't 1665 * send a cmd if the LUN is undefined. 1666 */ 1667 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1668 1669 /* "Logical unit not supported" */ 1670 ctl_set_sense_data(&msg_info.scsi.sense_data, 1671 lun, 1672 /*sense_format*/SSD_TYPE_NONE, 1673 /*current_error*/ 1, 1674 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1675 /*asc*/ 0x25, 1676 /*ascq*/ 0x00, 1677 SSD_ELEM_NONE); 1678 1679 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1680 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1681 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1682 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1683 msg_info.hdr.serializing_sc = NULL; 1684 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1685 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1686 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1687 } 1688 return(1); 1689 1690 } 1691 1692 mtx_lock(&lun->lun_lock); 1693 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1694 1695 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1696 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1697 ooa_links))) { 1698 case CTL_ACTION_BLOCK: 1699 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1700 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1701 blocked_links); 1702 break; 1703 case CTL_ACTION_PASS: 1704 case CTL_ACTION_SKIP: 1705 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1706 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1707 ctl_enqueue_rtr((union ctl_io *)ctsio); 1708 } else { 1709 1710 /* send msg back to other side */ 1711 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1712 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1713 msg_info.hdr.msg_type = CTL_MSG_R2R; 1714#if 0 1715 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1716#endif 1717 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1718 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1719 } 1720 } 1721 break; 1722 case CTL_ACTION_OVERLAP: 1723 /* OVERLAPPED COMMANDS ATTEMPTED */ 1724 ctl_set_sense_data(&msg_info.scsi.sense_data, 1725 lun, 1726 /*sense_format*/SSD_TYPE_NONE, 1727 /*current_error*/ 1, 1728 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1729 /*asc*/ 0x4E, 1730 /*ascq*/ 0x00, 1731 SSD_ELEM_NONE); 1732 1733 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1734 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1735 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1736 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1737 msg_info.hdr.serializing_sc = NULL; 1738 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1739#if 0 1740 printf("BAD JUJU:Major Bummer Overlap\n"); 1741#endif 1742 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1743 retval = 1; 1744 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1745 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1746 } 1747 break; 1748 case CTL_ACTION_OVERLAP_TAG: 1749 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1750 ctl_set_sense_data(&msg_info.scsi.sense_data, 1751 lun, 1752 /*sense_format*/SSD_TYPE_NONE, 1753 /*current_error*/ 1, 1754 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1755 /*asc*/ 0x4D, 1756 /*ascq*/ ctsio->tag_num & 0xff, 1757 SSD_ELEM_NONE); 1758 1759 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1760 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1761 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1762 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1763 msg_info.hdr.serializing_sc = NULL; 1764 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1765#if 0 1766 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1767#endif 1768 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1769 retval = 1; 1770 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1771 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1772 } 1773 break; 1774 case CTL_ACTION_ERROR: 1775 default: 1776 /* "Internal target failure" */ 1777 ctl_set_sense_data(&msg_info.scsi.sense_data, 1778 lun, 1779 /*sense_format*/SSD_TYPE_NONE, 1780 /*current_error*/ 1, 1781 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1782 /*asc*/ 0x44, 1783 /*ascq*/ 0x00, 1784 SSD_ELEM_NONE); 1785 1786 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1787 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1788 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1789 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1790 msg_info.hdr.serializing_sc = NULL; 1791 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1792#if 0 1793 printf("BAD JUJU:Major Bummer HW Error\n"); 1794#endif 1795 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1796 retval = 1; 1797 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1798 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1799 } 1800 break; 1801 } 1802 mtx_unlock(&lun->lun_lock); 1803 return (retval); 1804} 1805 1806static int 1807ctl_ioctl_submit_wait(union ctl_io *io) 1808{ 1809 struct ctl_fe_ioctl_params params; 1810 ctl_fe_ioctl_state last_state; 1811 int done, retval; 1812 1813 retval = 0; 1814 1815 bzero(¶ms, sizeof(params)); 1816 1817 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1818 cv_init(¶ms.sem, "ctlioccv"); 1819 params.state = CTL_IOCTL_INPROG; 1820 last_state = params.state; 1821 1822 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1823 1824 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1825 1826 /* This shouldn't happen */ 1827 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1828 return (retval); 1829 1830 done = 0; 1831 1832 do { 1833 mtx_lock(¶ms.ioctl_mtx); 1834 /* 1835 * Check the state here, and don't sleep if the state has 1836 * already changed (i.e. wakeup has already occured, but we 1837 * weren't waiting yet). 1838 */ 1839 if (params.state == last_state) { 1840 /* XXX KDM cv_wait_sig instead? */ 1841 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1842 } 1843 last_state = params.state; 1844 1845 switch (params.state) { 1846 case CTL_IOCTL_INPROG: 1847 /* Why did we wake up? */ 1848 /* XXX KDM error here? */ 1849 mtx_unlock(¶ms.ioctl_mtx); 1850 break; 1851 case CTL_IOCTL_DATAMOVE: 1852 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1853 1854 /* 1855 * change last_state back to INPROG to avoid 1856 * deadlock on subsequent data moves. 1857 */ 1858 params.state = last_state = CTL_IOCTL_INPROG; 1859 1860 mtx_unlock(¶ms.ioctl_mtx); 1861 ctl_ioctl_do_datamove(&io->scsiio); 1862 /* 1863 * Note that in some cases, most notably writes, 1864 * this will queue the I/O and call us back later. 1865 * In other cases, generally reads, this routine 1866 * will immediately call back and wake us up, 1867 * probably using our own context. 1868 */ 1869 io->scsiio.be_move_done(io); 1870 break; 1871 case CTL_IOCTL_DONE: 1872 mtx_unlock(¶ms.ioctl_mtx); 1873 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1874 done = 1; 1875 break; 1876 default: 1877 mtx_unlock(¶ms.ioctl_mtx); 1878 /* XXX KDM error here? */ 1879 break; 1880 } 1881 } while (done == 0); 1882 1883 mtx_destroy(¶ms.ioctl_mtx); 1884 cv_destroy(¶ms.sem); 1885 1886 return (CTL_RETVAL_COMPLETE); 1887} 1888 1889static void 1890ctl_ioctl_datamove(union ctl_io *io) 1891{ 1892 struct ctl_fe_ioctl_params *params; 1893 1894 params = (struct ctl_fe_ioctl_params *) 1895 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1896 1897 mtx_lock(¶ms->ioctl_mtx); 1898 params->state = CTL_IOCTL_DATAMOVE; 1899 cv_broadcast(¶ms->sem); 1900 mtx_unlock(¶ms->ioctl_mtx); 1901} 1902 1903static void 1904ctl_ioctl_done(union ctl_io *io) 1905{ 1906 struct ctl_fe_ioctl_params *params; 1907 1908 params = (struct ctl_fe_ioctl_params *) 1909 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1910 1911 mtx_lock(¶ms->ioctl_mtx); 1912 params->state = CTL_IOCTL_DONE; 1913 cv_broadcast(¶ms->sem); 1914 mtx_unlock(¶ms->ioctl_mtx); 1915} 1916 1917static void 1918ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1919{ 1920 struct ctl_fe_ioctl_startstop_info *sd_info; 1921 1922 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1923 1924 sd_info->hs_info.status = metatask->status; 1925 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1926 sd_info->hs_info.luns_complete = 1927 metatask->taskinfo.startstop.luns_complete; 1928 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1929 1930 cv_broadcast(&sd_info->sem); 1931} 1932 1933static void 1934ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1935{ 1936 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1937 1938 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1939 1940 mtx_lock(fe_bbr_info->lock); 1941 fe_bbr_info->bbr_info->status = metatask->status; 1942 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1943 fe_bbr_info->wakeup_done = 1; 1944 mtx_unlock(fe_bbr_info->lock); 1945 1946 cv_broadcast(&fe_bbr_info->sem); 1947} 1948 1949/* 1950 * Returns 0 for success, errno for failure. 1951 */ 1952static int 1953ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1954 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1955{ 1956 union ctl_io *io; 1957 int retval; 1958 1959 retval = 0; 1960 1961 mtx_lock(&lun->lun_lock); 1962 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 1963 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 1964 ooa_links)) { 1965 struct ctl_ooa_entry *entry; 1966 1967 /* 1968 * If we've got more than we can fit, just count the 1969 * remaining entries. 1970 */ 1971 if (*cur_fill_num >= ooa_hdr->alloc_num) 1972 continue; 1973 1974 entry = &kern_entries[*cur_fill_num]; 1975 1976 entry->tag_num = io->scsiio.tag_num; 1977 entry->lun_num = lun->lun; 1978#ifdef CTL_TIME_IO 1979 entry->start_bt = io->io_hdr.start_bt; 1980#endif 1981 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 1982 entry->cdb_len = io->scsiio.cdb_len; 1983 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 1984 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 1985 1986 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 1987 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 1988 1989 if (io->io_hdr.flags & CTL_FLAG_ABORT) 1990 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 1991 1992 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 1993 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 1994 1995 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 1996 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 1997 } 1998 mtx_unlock(&lun->lun_lock); 1999 2000 return (retval); 2001} 2002 2003static void * 2004ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2005 size_t error_str_len) 2006{ 2007 void *kptr; 2008 2009 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2010 2011 if (copyin(user_addr, kptr, len) != 0) { 2012 snprintf(error_str, error_str_len, "Error copying %d bytes " 2013 "from user address %p to kernel address %p", len, 2014 user_addr, kptr); 2015 free(kptr, M_CTL); 2016 return (NULL); 2017 } 2018 2019 return (kptr); 2020} 2021 2022static void 2023ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2024{ 2025 int i; 2026 2027 if (be_args == NULL) 2028 return; 2029 2030 for (i = 0; i < num_be_args; i++) { 2031 free(be_args[i].kname, M_CTL); 2032 free(be_args[i].kvalue, M_CTL); 2033 } 2034 2035 free(be_args, M_CTL); 2036} 2037 2038static struct ctl_be_arg * 2039ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2040 char *error_str, size_t error_str_len) 2041{ 2042 struct ctl_be_arg *args; 2043 int i; 2044 2045 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2046 error_str, error_str_len); 2047 2048 if (args == NULL) 2049 goto bailout; 2050 2051 for (i = 0; i < num_be_args; i++) { 2052 args[i].kname = NULL; 2053 args[i].kvalue = NULL; 2054 } 2055 2056 for (i = 0; i < num_be_args; i++) { 2057 uint8_t *tmpptr; 2058 2059 args[i].kname = ctl_copyin_alloc(args[i].name, 2060 args[i].namelen, error_str, error_str_len); 2061 if (args[i].kname == NULL) 2062 goto bailout; 2063 2064 if (args[i].kname[args[i].namelen - 1] != '\0') { 2065 snprintf(error_str, error_str_len, "Argument %d " 2066 "name is not NUL-terminated", i); 2067 goto bailout; 2068 } 2069 2070 args[i].kvalue = NULL; 2071 2072 tmpptr = ctl_copyin_alloc(args[i].value, 2073 args[i].vallen, error_str, error_str_len); 2074 if (tmpptr == NULL) 2075 goto bailout; 2076 2077 args[i].kvalue = tmpptr; 2078 2079 if ((args[i].flags & CTL_BEARG_ASCII) 2080 && (tmpptr[args[i].vallen - 1] != '\0')) { 2081 snprintf(error_str, error_str_len, "Argument %d " 2082 "value is not NUL-terminated", i); 2083 goto bailout; 2084 } 2085 } 2086 2087 return (args); 2088bailout: 2089 2090 ctl_free_args(num_be_args, args); 2091 2092 return (NULL); 2093} 2094 2095/* 2096 * Escape characters that are illegal or not recommended in XML. 2097 */ 2098int 2099ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2100{ 2101 int retval; 2102 2103 retval = 0; 2104 2105 for (; *str; str++) { 2106 switch (*str) { 2107 case '&': 2108 retval = sbuf_printf(sb, "&"); 2109 break; 2110 case '>': 2111 retval = sbuf_printf(sb, ">"); 2112 break; 2113 case '<': 2114 retval = sbuf_printf(sb, "<"); 2115 break; 2116 default: 2117 retval = sbuf_putc(sb, *str); 2118 break; 2119 } 2120 2121 if (retval != 0) 2122 break; 2123 2124 } 2125 2126 return (retval); 2127} 2128 2129static int 2130ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2131 struct thread *td) 2132{ 2133 struct ctl_softc *softc; 2134 int retval; 2135 2136 softc = control_softc; 2137 2138 retval = 0; 2139 2140 switch (cmd) { 2141 case CTL_IO: { 2142 union ctl_io *io; 2143 void *pool_tmp; 2144 2145 /* 2146 * If we haven't been "enabled", don't allow any SCSI I/O 2147 * to this FETD. 2148 */ 2149 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2150 retval = -EPERM; 2151 break; 2152 } 2153 2154 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2155 if (io == NULL) { 2156 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2157 retval = -ENOSPC; 2158 break; 2159 } 2160 2161 /* 2162 * Need to save the pool reference so it doesn't get 2163 * spammed by the user's ctl_io. 2164 */ 2165 pool_tmp = io->io_hdr.pool; 2166 2167 memcpy(io, (void *)addr, sizeof(*io)); 2168 2169 io->io_hdr.pool = pool_tmp; 2170 /* 2171 * No status yet, so make sure the status is set properly. 2172 */ 2173 io->io_hdr.status = CTL_STATUS_NONE; 2174 2175 /* 2176 * The user sets the initiator ID, target and LUN IDs. 2177 */ 2178 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2179 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2180 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2181 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2182 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2183 2184 retval = ctl_ioctl_submit_wait(io); 2185 2186 if (retval != 0) { 2187 ctl_free_io(io); 2188 break; 2189 } 2190 2191 memcpy((void *)addr, io, sizeof(*io)); 2192 2193 /* return this to our pool */ 2194 ctl_free_io(io); 2195 2196 break; 2197 } 2198 case CTL_ENABLE_PORT: 2199 case CTL_DISABLE_PORT: 2200 case CTL_SET_PORT_WWNS: { 2201 struct ctl_frontend *fe; 2202 struct ctl_port_entry *entry; 2203 2204 entry = (struct ctl_port_entry *)addr; 2205 2206 mtx_lock(&softc->ctl_lock); 2207 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2208 int action, done; 2209 2210 action = 0; 2211 done = 0; 2212 2213 if ((entry->port_type == CTL_PORT_NONE) 2214 && (entry->targ_port == fe->targ_port)) { 2215 /* 2216 * If the user only wants to enable or 2217 * disable or set WWNs on a specific port, 2218 * do the operation and we're done. 2219 */ 2220 action = 1; 2221 done = 1; 2222 } else if (entry->port_type & fe->port_type) { 2223 /* 2224 * Compare the user's type mask with the 2225 * particular frontend type to see if we 2226 * have a match. 2227 */ 2228 action = 1; 2229 done = 0; 2230 2231 /* 2232 * Make sure the user isn't trying to set 2233 * WWNs on multiple ports at the same time. 2234 */ 2235 if (cmd == CTL_SET_PORT_WWNS) { 2236 printf("%s: Can't set WWNs on " 2237 "multiple ports\n", __func__); 2238 retval = EINVAL; 2239 break; 2240 } 2241 } 2242 if (action != 0) { 2243 /* 2244 * XXX KDM we have to drop the lock here, 2245 * because the online/offline operations 2246 * can potentially block. We need to 2247 * reference count the frontends so they 2248 * can't go away, 2249 */ 2250 mtx_unlock(&softc->ctl_lock); 2251 2252 if (cmd == CTL_ENABLE_PORT) { 2253 struct ctl_lun *lun; 2254 2255 STAILQ_FOREACH(lun, &softc->lun_list, 2256 links) { 2257 fe->lun_enable(fe->targ_lun_arg, 2258 lun->target, 2259 lun->lun); 2260 } 2261 2262 ctl_frontend_online(fe); 2263 } else if (cmd == CTL_DISABLE_PORT) { 2264 struct ctl_lun *lun; 2265 2266 ctl_frontend_offline(fe); 2267 2268 STAILQ_FOREACH(lun, &softc->lun_list, 2269 links) { 2270 fe->lun_disable( 2271 fe->targ_lun_arg, 2272 lun->target, 2273 lun->lun); 2274 } 2275 } 2276 2277 mtx_lock(&softc->ctl_lock); 2278 2279 if (cmd == CTL_SET_PORT_WWNS) 2280 ctl_frontend_set_wwns(fe, 2281 (entry->flags & CTL_PORT_WWNN_VALID) ? 2282 1 : 0, entry->wwnn, 2283 (entry->flags & CTL_PORT_WWPN_VALID) ? 2284 1 : 0, entry->wwpn); 2285 } 2286 if (done != 0) 2287 break; 2288 } 2289 mtx_unlock(&softc->ctl_lock); 2290 break; 2291 } 2292 case CTL_GET_PORT_LIST: { 2293 struct ctl_frontend *fe; 2294 struct ctl_port_list *list; 2295 int i; 2296 2297 list = (struct ctl_port_list *)addr; 2298 2299 if (list->alloc_len != (list->alloc_num * 2300 sizeof(struct ctl_port_entry))) { 2301 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2302 "alloc_num %u * sizeof(struct ctl_port_entry) " 2303 "%zu\n", __func__, list->alloc_len, 2304 list->alloc_num, sizeof(struct ctl_port_entry)); 2305 retval = EINVAL; 2306 break; 2307 } 2308 list->fill_len = 0; 2309 list->fill_num = 0; 2310 list->dropped_num = 0; 2311 i = 0; 2312 mtx_lock(&softc->ctl_lock); 2313 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2314 struct ctl_port_entry entry, *list_entry; 2315 2316 if (list->fill_num >= list->alloc_num) { 2317 list->dropped_num++; 2318 continue; 2319 } 2320 2321 entry.port_type = fe->port_type; 2322 strlcpy(entry.port_name, fe->port_name, 2323 sizeof(entry.port_name)); 2324 entry.targ_port = fe->targ_port; 2325 entry.physical_port = fe->physical_port; 2326 entry.virtual_port = fe->virtual_port; 2327 entry.wwnn = fe->wwnn; 2328 entry.wwpn = fe->wwpn; 2329 if (fe->status & CTL_PORT_STATUS_ONLINE) 2330 entry.online = 1; 2331 else 2332 entry.online = 0; 2333 2334 list_entry = &list->entries[i]; 2335 2336 retval = copyout(&entry, list_entry, sizeof(entry)); 2337 if (retval != 0) { 2338 printf("%s: CTL_GET_PORT_LIST: copyout " 2339 "returned %d\n", __func__, retval); 2340 break; 2341 } 2342 i++; 2343 list->fill_num++; 2344 list->fill_len += sizeof(entry); 2345 } 2346 mtx_unlock(&softc->ctl_lock); 2347 2348 /* 2349 * If this is non-zero, we had a copyout fault, so there's 2350 * probably no point in attempting to set the status inside 2351 * the structure. 2352 */ 2353 if (retval != 0) 2354 break; 2355 2356 if (list->dropped_num > 0) 2357 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2358 else 2359 list->status = CTL_PORT_LIST_OK; 2360 break; 2361 } 2362 case CTL_DUMP_OOA: { 2363 struct ctl_lun *lun; 2364 union ctl_io *io; 2365 char printbuf[128]; 2366 struct sbuf sb; 2367 2368 mtx_lock(&softc->ctl_lock); 2369 printf("Dumping OOA queues:\n"); 2370 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2371 mtx_lock(&lun->lun_lock); 2372 for (io = (union ctl_io *)TAILQ_FIRST( 2373 &lun->ooa_queue); io != NULL; 2374 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2375 ooa_links)) { 2376 sbuf_new(&sb, printbuf, sizeof(printbuf), 2377 SBUF_FIXEDLEN); 2378 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2379 (intmax_t)lun->lun, 2380 io->scsiio.tag_num, 2381 (io->io_hdr.flags & 2382 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2383 (io->io_hdr.flags & 2384 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2385 (io->io_hdr.flags & 2386 CTL_FLAG_ABORT) ? " ABORT" : "", 2387 (io->io_hdr.flags & 2388 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2389 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2390 sbuf_finish(&sb); 2391 printf("%s\n", sbuf_data(&sb)); 2392 } 2393 mtx_unlock(&lun->lun_lock); 2394 } 2395 printf("OOA queues dump done\n"); 2396 mtx_unlock(&softc->ctl_lock); 2397 break; 2398 } 2399 case CTL_GET_OOA: { 2400 struct ctl_lun *lun; 2401 struct ctl_ooa *ooa_hdr; 2402 struct ctl_ooa_entry *entries; 2403 uint32_t cur_fill_num; 2404 2405 ooa_hdr = (struct ctl_ooa *)addr; 2406 2407 if ((ooa_hdr->alloc_len == 0) 2408 || (ooa_hdr->alloc_num == 0)) { 2409 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2410 "must be non-zero\n", __func__, 2411 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2412 retval = EINVAL; 2413 break; 2414 } 2415 2416 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2417 sizeof(struct ctl_ooa_entry))) { 2418 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2419 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2420 __func__, ooa_hdr->alloc_len, 2421 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2422 retval = EINVAL; 2423 break; 2424 } 2425 2426 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2427 if (entries == NULL) { 2428 printf("%s: could not allocate %d bytes for OOA " 2429 "dump\n", __func__, ooa_hdr->alloc_len); 2430 retval = ENOMEM; 2431 break; 2432 } 2433 2434 mtx_lock(&softc->ctl_lock); 2435 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2436 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2437 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2438 mtx_unlock(&softc->ctl_lock); 2439 free(entries, M_CTL); 2440 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2441 __func__, (uintmax_t)ooa_hdr->lun_num); 2442 retval = EINVAL; 2443 break; 2444 } 2445 2446 cur_fill_num = 0; 2447 2448 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2449 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2450 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2451 ooa_hdr, entries); 2452 if (retval != 0) 2453 break; 2454 } 2455 if (retval != 0) { 2456 mtx_unlock(&softc->ctl_lock); 2457 free(entries, M_CTL); 2458 break; 2459 } 2460 } else { 2461 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2462 2463 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2464 entries); 2465 } 2466 mtx_unlock(&softc->ctl_lock); 2467 2468 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2469 ooa_hdr->fill_len = ooa_hdr->fill_num * 2470 sizeof(struct ctl_ooa_entry); 2471 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2472 if (retval != 0) { 2473 printf("%s: error copying out %d bytes for OOA dump\n", 2474 __func__, ooa_hdr->fill_len); 2475 } 2476 2477 getbintime(&ooa_hdr->cur_bt); 2478 2479 if (cur_fill_num > ooa_hdr->alloc_num) { 2480 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2481 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2482 } else { 2483 ooa_hdr->dropped_num = 0; 2484 ooa_hdr->status = CTL_OOA_OK; 2485 } 2486 2487 free(entries, M_CTL); 2488 break; 2489 } 2490 case CTL_CHECK_OOA: { 2491 union ctl_io *io; 2492 struct ctl_lun *lun; 2493 struct ctl_ooa_info *ooa_info; 2494 2495 2496 ooa_info = (struct ctl_ooa_info *)addr; 2497 2498 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2499 ooa_info->status = CTL_OOA_INVALID_LUN; 2500 break; 2501 } 2502 mtx_lock(&softc->ctl_lock); 2503 lun = softc->ctl_luns[ooa_info->lun_id]; 2504 if (lun == NULL) { 2505 mtx_unlock(&softc->ctl_lock); 2506 ooa_info->status = CTL_OOA_INVALID_LUN; 2507 break; 2508 } 2509 mtx_lock(&lun->lun_lock); 2510 mtx_unlock(&softc->ctl_lock); 2511 ooa_info->num_entries = 0; 2512 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2513 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2514 &io->io_hdr, ooa_links)) { 2515 ooa_info->num_entries++; 2516 } 2517 mtx_unlock(&lun->lun_lock); 2518 2519 ooa_info->status = CTL_OOA_SUCCESS; 2520 2521 break; 2522 } 2523 case CTL_HARD_START: 2524 case CTL_HARD_STOP: { 2525 struct ctl_fe_ioctl_startstop_info ss_info; 2526 struct cfi_metatask *metatask; 2527 struct mtx hs_mtx; 2528 2529 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2530 2531 cv_init(&ss_info.sem, "hard start/stop cv" ); 2532 2533 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2534 if (metatask == NULL) { 2535 retval = ENOMEM; 2536 mtx_destroy(&hs_mtx); 2537 break; 2538 } 2539 2540 if (cmd == CTL_HARD_START) 2541 metatask->tasktype = CFI_TASK_STARTUP; 2542 else 2543 metatask->tasktype = CFI_TASK_SHUTDOWN; 2544 2545 metatask->callback = ctl_ioctl_hard_startstop_callback; 2546 metatask->callback_arg = &ss_info; 2547 2548 cfi_action(metatask); 2549 2550 /* Wait for the callback */ 2551 mtx_lock(&hs_mtx); 2552 cv_wait_sig(&ss_info.sem, &hs_mtx); 2553 mtx_unlock(&hs_mtx); 2554 2555 /* 2556 * All information has been copied from the metatask by the 2557 * time cv_broadcast() is called, so we free the metatask here. 2558 */ 2559 cfi_free_metatask(metatask); 2560 2561 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2562 2563 mtx_destroy(&hs_mtx); 2564 break; 2565 } 2566 case CTL_BBRREAD: { 2567 struct ctl_bbrread_info *bbr_info; 2568 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2569 struct mtx bbr_mtx; 2570 struct cfi_metatask *metatask; 2571 2572 bbr_info = (struct ctl_bbrread_info *)addr; 2573 2574 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2575 2576 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2577 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2578 2579 fe_bbr_info.bbr_info = bbr_info; 2580 fe_bbr_info.lock = &bbr_mtx; 2581 2582 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2583 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2584 2585 if (metatask == NULL) { 2586 mtx_destroy(&bbr_mtx); 2587 cv_destroy(&fe_bbr_info.sem); 2588 retval = ENOMEM; 2589 break; 2590 } 2591 metatask->tasktype = CFI_TASK_BBRREAD; 2592 metatask->callback = ctl_ioctl_bbrread_callback; 2593 metatask->callback_arg = &fe_bbr_info; 2594 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2595 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2596 metatask->taskinfo.bbrread.len = bbr_info->len; 2597 2598 cfi_action(metatask); 2599 2600 mtx_lock(&bbr_mtx); 2601 while (fe_bbr_info.wakeup_done == 0) 2602 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2603 mtx_unlock(&bbr_mtx); 2604 2605 bbr_info->status = metatask->status; 2606 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2607 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2608 memcpy(&bbr_info->sense_data, 2609 &metatask->taskinfo.bbrread.sense_data, 2610 ctl_min(sizeof(bbr_info->sense_data), 2611 sizeof(metatask->taskinfo.bbrread.sense_data))); 2612 2613 cfi_free_metatask(metatask); 2614 2615 mtx_destroy(&bbr_mtx); 2616 cv_destroy(&fe_bbr_info.sem); 2617 2618 break; 2619 } 2620 case CTL_DELAY_IO: { 2621 struct ctl_io_delay_info *delay_info; 2622#ifdef CTL_IO_DELAY 2623 struct ctl_lun *lun; 2624#endif /* CTL_IO_DELAY */ 2625 2626 delay_info = (struct ctl_io_delay_info *)addr; 2627 2628#ifdef CTL_IO_DELAY 2629 mtx_lock(&softc->ctl_lock); 2630 2631 if ((delay_info->lun_id > CTL_MAX_LUNS) 2632 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2633 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2634 } else { 2635 lun = softc->ctl_luns[delay_info->lun_id]; 2636 mtx_lock(&lun->lun_lock); 2637 2638 delay_info->status = CTL_DELAY_STATUS_OK; 2639 2640 switch (delay_info->delay_type) { 2641 case CTL_DELAY_TYPE_CONT: 2642 break; 2643 case CTL_DELAY_TYPE_ONESHOT: 2644 break; 2645 default: 2646 delay_info->status = 2647 CTL_DELAY_STATUS_INVALID_TYPE; 2648 break; 2649 } 2650 2651 switch (delay_info->delay_loc) { 2652 case CTL_DELAY_LOC_DATAMOVE: 2653 lun->delay_info.datamove_type = 2654 delay_info->delay_type; 2655 lun->delay_info.datamove_delay = 2656 delay_info->delay_secs; 2657 break; 2658 case CTL_DELAY_LOC_DONE: 2659 lun->delay_info.done_type = 2660 delay_info->delay_type; 2661 lun->delay_info.done_delay = 2662 delay_info->delay_secs; 2663 break; 2664 default: 2665 delay_info->status = 2666 CTL_DELAY_STATUS_INVALID_LOC; 2667 break; 2668 } 2669 mtx_unlock(&lun->lun_lock); 2670 } 2671 2672 mtx_unlock(&softc->ctl_lock); 2673#else 2674 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2675#endif /* CTL_IO_DELAY */ 2676 break; 2677 } 2678 case CTL_REALSYNC_SET: { 2679 int *syncstate; 2680 2681 syncstate = (int *)addr; 2682 2683 mtx_lock(&softc->ctl_lock); 2684 switch (*syncstate) { 2685 case 0: 2686 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2687 break; 2688 case 1: 2689 softc->flags |= CTL_FLAG_REAL_SYNC; 2690 break; 2691 default: 2692 retval = -EINVAL; 2693 break; 2694 } 2695 mtx_unlock(&softc->ctl_lock); 2696 break; 2697 } 2698 case CTL_REALSYNC_GET: { 2699 int *syncstate; 2700 2701 syncstate = (int*)addr; 2702 2703 mtx_lock(&softc->ctl_lock); 2704 if (softc->flags & CTL_FLAG_REAL_SYNC) 2705 *syncstate = 1; 2706 else 2707 *syncstate = 0; 2708 mtx_unlock(&softc->ctl_lock); 2709 2710 break; 2711 } 2712 case CTL_SETSYNC: 2713 case CTL_GETSYNC: { 2714 struct ctl_sync_info *sync_info; 2715 struct ctl_lun *lun; 2716 2717 sync_info = (struct ctl_sync_info *)addr; 2718 2719 mtx_lock(&softc->ctl_lock); 2720 lun = softc->ctl_luns[sync_info->lun_id]; 2721 if (lun == NULL) { 2722 mtx_unlock(&softc->ctl_lock); 2723 sync_info->status = CTL_GS_SYNC_NO_LUN; 2724 } 2725 /* 2726 * Get or set the sync interval. We're not bounds checking 2727 * in the set case, hopefully the user won't do something 2728 * silly. 2729 */ 2730 mtx_lock(&lun->lun_lock); 2731 mtx_unlock(&softc->ctl_lock); 2732 if (cmd == CTL_GETSYNC) 2733 sync_info->sync_interval = lun->sync_interval; 2734 else 2735 lun->sync_interval = sync_info->sync_interval; 2736 mtx_unlock(&lun->lun_lock); 2737 2738 sync_info->status = CTL_GS_SYNC_OK; 2739 2740 break; 2741 } 2742 case CTL_GETSTATS: { 2743 struct ctl_stats *stats; 2744 struct ctl_lun *lun; 2745 int i; 2746 2747 stats = (struct ctl_stats *)addr; 2748 2749 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2750 stats->alloc_len) { 2751 stats->status = CTL_SS_NEED_MORE_SPACE; 2752 stats->num_luns = softc->num_luns; 2753 break; 2754 } 2755 /* 2756 * XXX KDM no locking here. If the LUN list changes, 2757 * things can blow up. 2758 */ 2759 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2760 i++, lun = STAILQ_NEXT(lun, links)) { 2761 retval = copyout(&lun->stats, &stats->lun_stats[i], 2762 sizeof(lun->stats)); 2763 if (retval != 0) 2764 break; 2765 } 2766 stats->num_luns = softc->num_luns; 2767 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2768 softc->num_luns; 2769 stats->status = CTL_SS_OK; 2770#ifdef CTL_TIME_IO 2771 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2772#else 2773 stats->flags = CTL_STATS_FLAG_NONE; 2774#endif 2775 getnanouptime(&stats->timestamp); 2776 break; 2777 } 2778 case CTL_ERROR_INJECT: { 2779 struct ctl_error_desc *err_desc, *new_err_desc; 2780 struct ctl_lun *lun; 2781 2782 err_desc = (struct ctl_error_desc *)addr; 2783 2784 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2785 M_WAITOK | M_ZERO); 2786 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2787 2788 mtx_lock(&softc->ctl_lock); 2789 lun = softc->ctl_luns[err_desc->lun_id]; 2790 if (lun == NULL) { 2791 mtx_unlock(&softc->ctl_lock); 2792 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2793 __func__, (uintmax_t)err_desc->lun_id); 2794 retval = EINVAL; 2795 break; 2796 } 2797 mtx_lock(&lun->lun_lock); 2798 mtx_unlock(&softc->ctl_lock); 2799 2800 /* 2801 * We could do some checking here to verify the validity 2802 * of the request, but given the complexity of error 2803 * injection requests, the checking logic would be fairly 2804 * complex. 2805 * 2806 * For now, if the request is invalid, it just won't get 2807 * executed and might get deleted. 2808 */ 2809 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2810 2811 /* 2812 * XXX KDM check to make sure the serial number is unique, 2813 * in case we somehow manage to wrap. That shouldn't 2814 * happen for a very long time, but it's the right thing to 2815 * do. 2816 */ 2817 new_err_desc->serial = lun->error_serial; 2818 err_desc->serial = lun->error_serial; 2819 lun->error_serial++; 2820 2821 mtx_unlock(&lun->lun_lock); 2822 break; 2823 } 2824 case CTL_ERROR_INJECT_DELETE: { 2825 struct ctl_error_desc *delete_desc, *desc, *desc2; 2826 struct ctl_lun *lun; 2827 int delete_done; 2828 2829 delete_desc = (struct ctl_error_desc *)addr; 2830 delete_done = 0; 2831 2832 mtx_lock(&softc->ctl_lock); 2833 lun = softc->ctl_luns[delete_desc->lun_id]; 2834 if (lun == NULL) { 2835 mtx_unlock(&softc->ctl_lock); 2836 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2837 __func__, (uintmax_t)delete_desc->lun_id); 2838 retval = EINVAL; 2839 break; 2840 } 2841 mtx_lock(&lun->lun_lock); 2842 mtx_unlock(&softc->ctl_lock); 2843 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2844 if (desc->serial != delete_desc->serial) 2845 continue; 2846 2847 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2848 links); 2849 free(desc, M_CTL); 2850 delete_done = 1; 2851 } 2852 mtx_unlock(&lun->lun_lock); 2853 if (delete_done == 0) { 2854 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2855 "error serial %ju on LUN %u\n", __func__, 2856 delete_desc->serial, delete_desc->lun_id); 2857 retval = EINVAL; 2858 break; 2859 } 2860 break; 2861 } 2862 case CTL_DUMP_STRUCTS: { 2863 int i, j, k; 2864 struct ctl_frontend *fe; 2865 2866 printf("CTL IID to WWPN map start:\n"); 2867 for (i = 0; i < CTL_MAX_PORTS; i++) { 2868 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2869 if (softc->wwpn_iid[i][j].in_use == 0) 2870 continue; 2871 2872 printf("port %d iid %u WWPN %#jx\n", 2873 softc->wwpn_iid[i][j].port, 2874 softc->wwpn_iid[i][j].iid, 2875 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2876 } 2877 } 2878 printf("CTL IID to WWPN map end\n"); 2879 printf("CTL Persistent Reservation information start:\n"); 2880 for (i = 0; i < CTL_MAX_LUNS; i++) { 2881 struct ctl_lun *lun; 2882 2883 lun = softc->ctl_luns[i]; 2884 2885 if ((lun == NULL) 2886 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2887 continue; 2888 2889 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2890 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2891 if (lun->per_res[j+k].registered == 0) 2892 continue; 2893 printf("LUN %d port %d iid %d key " 2894 "%#jx\n", i, j, k, 2895 (uintmax_t)scsi_8btou64( 2896 lun->per_res[j+k].res_key.key)); 2897 } 2898 } 2899 } 2900 printf("CTL Persistent Reservation information end\n"); 2901 printf("CTL Frontends:\n"); 2902 /* 2903 * XXX KDM calling this without a lock. We'd likely want 2904 * to drop the lock before calling the frontend's dump 2905 * routine anyway. 2906 */ 2907 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2908 printf("Frontend %s Type %u pport %d vport %d WWNN " 2909 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2910 fe->physical_port, fe->virtual_port, 2911 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2912 2913 /* 2914 * Frontends are not required to support the dump 2915 * routine. 2916 */ 2917 if (fe->fe_dump == NULL) 2918 continue; 2919 2920 fe->fe_dump(); 2921 } 2922 printf("CTL Frontend information end\n"); 2923 break; 2924 } 2925 case CTL_LUN_REQ: { 2926 struct ctl_lun_req *lun_req; 2927 struct ctl_backend_driver *backend; 2928 2929 lun_req = (struct ctl_lun_req *)addr; 2930 2931 backend = ctl_backend_find(lun_req->backend); 2932 if (backend == NULL) { 2933 lun_req->status = CTL_LUN_ERROR; 2934 snprintf(lun_req->error_str, 2935 sizeof(lun_req->error_str), 2936 "Backend \"%s\" not found.", 2937 lun_req->backend); 2938 break; 2939 } 2940 if (lun_req->num_be_args > 0) { 2941 lun_req->kern_be_args = ctl_copyin_args( 2942 lun_req->num_be_args, 2943 lun_req->be_args, 2944 lun_req->error_str, 2945 sizeof(lun_req->error_str)); 2946 if (lun_req->kern_be_args == NULL) { 2947 lun_req->status = CTL_LUN_ERROR; 2948 break; 2949 } 2950 } 2951 2952 retval = backend->ioctl(dev, cmd, addr, flag, td); 2953 2954 if (lun_req->num_be_args > 0) { 2955 ctl_free_args(lun_req->num_be_args, 2956 lun_req->kern_be_args); 2957 } 2958 break; 2959 } 2960 case CTL_LUN_LIST: { 2961 struct sbuf *sb; 2962 struct ctl_lun *lun; 2963 struct ctl_lun_list *list; 2964 struct ctl_be_lun_option *opt; 2965 2966 list = (struct ctl_lun_list *)addr; 2967 2968 /* 2969 * Allocate a fixed length sbuf here, based on the length 2970 * of the user's buffer. We could allocate an auto-extending 2971 * buffer, and then tell the user how much larger our 2972 * amount of data is than his buffer, but that presents 2973 * some problems: 2974 * 2975 * 1. The sbuf(9) routines use a blocking malloc, and so 2976 * we can't hold a lock while calling them with an 2977 * auto-extending buffer. 2978 * 2979 * 2. There is not currently a LUN reference counting 2980 * mechanism, outside of outstanding transactions on 2981 * the LUN's OOA queue. So a LUN could go away on us 2982 * while we're getting the LUN number, backend-specific 2983 * information, etc. Thus, given the way things 2984 * currently work, we need to hold the CTL lock while 2985 * grabbing LUN information. 2986 * 2987 * So, from the user's standpoint, the best thing to do is 2988 * allocate what he thinks is a reasonable buffer length, 2989 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 2990 * double the buffer length and try again. (And repeat 2991 * that until he succeeds.) 2992 */ 2993 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 2994 if (sb == NULL) { 2995 list->status = CTL_LUN_LIST_ERROR; 2996 snprintf(list->error_str, sizeof(list->error_str), 2997 "Unable to allocate %d bytes for LUN list", 2998 list->alloc_len); 2999 break; 3000 } 3001 3002 sbuf_printf(sb, "<ctllunlist>\n"); 3003 3004 mtx_lock(&softc->ctl_lock); 3005 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3006 mtx_lock(&lun->lun_lock); 3007 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3008 (uintmax_t)lun->lun); 3009 3010 /* 3011 * Bail out as soon as we see that we've overfilled 3012 * the buffer. 3013 */ 3014 if (retval != 0) 3015 break; 3016 3017 retval = sbuf_printf(sb, "<backend_type>%s" 3018 "</backend_type>\n", 3019 (lun->backend == NULL) ? "none" : 3020 lun->backend->name); 3021 3022 if (retval != 0) 3023 break; 3024 3025 retval = sbuf_printf(sb, "<lun_type>%d</lun_type>\n", 3026 lun->be_lun->lun_type); 3027 3028 if (retval != 0) 3029 break; 3030 3031 if (lun->backend == NULL) { 3032 retval = sbuf_printf(sb, "</lun>\n"); 3033 if (retval != 0) 3034 break; 3035 continue; 3036 } 3037 3038 retval = sbuf_printf(sb, "<size>%ju</size>\n", 3039 (lun->be_lun->maxlba > 0) ? 3040 lun->be_lun->maxlba + 1 : 0); 3041 3042 if (retval != 0) 3043 break; 3044 3045 retval = sbuf_printf(sb, "<blocksize>%u</blocksize>\n", 3046 lun->be_lun->blocksize); 3047 3048 if (retval != 0) 3049 break; 3050 3051 retval = sbuf_printf(sb, "<serial_number>"); 3052 3053 if (retval != 0) 3054 break; 3055 3056 retval = ctl_sbuf_printf_esc(sb, 3057 lun->be_lun->serial_num); 3058 3059 if (retval != 0) 3060 break; 3061 3062 retval = sbuf_printf(sb, "</serial_number>\n"); 3063 3064 if (retval != 0) 3065 break; 3066 3067 retval = sbuf_printf(sb, "<device_id>"); 3068 3069 if (retval != 0) 3070 break; 3071 3072 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3073 3074 if (retval != 0) 3075 break; 3076 3077 retval = sbuf_printf(sb, "</device_id>\n"); 3078 3079 if (retval != 0) 3080 break; 3081 3082 if (lun->backend->lun_info != NULL) { 3083 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3084 if (retval != 0) 3085 break; 3086 } 3087 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3088 retval = sbuf_printf(sb, "<%s>%s</%s>", opt->name, opt->value, opt->name); 3089 if (retval != 0) 3090 break; 3091 } 3092 3093 retval = sbuf_printf(sb, "</lun>\n"); 3094 3095 if (retval != 0) 3096 break; 3097 mtx_unlock(&lun->lun_lock); 3098 } 3099 if (lun != NULL) 3100 mtx_unlock(&lun->lun_lock); 3101 mtx_unlock(&softc->ctl_lock); 3102 3103 if ((retval != 0) 3104 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3105 retval = 0; 3106 sbuf_delete(sb); 3107 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3108 snprintf(list->error_str, sizeof(list->error_str), 3109 "Out of space, %d bytes is too small", 3110 list->alloc_len); 3111 break; 3112 } 3113 3114 sbuf_finish(sb); 3115 3116 retval = copyout(sbuf_data(sb), list->lun_xml, 3117 sbuf_len(sb) + 1); 3118 3119 list->fill_len = sbuf_len(sb) + 1; 3120 list->status = CTL_LUN_LIST_OK; 3121 sbuf_delete(sb); 3122 break; 3123 } 3124 case CTL_ISCSI: { 3125 struct ctl_iscsi *ci; 3126 struct ctl_frontend *fe; 3127 3128 ci = (struct ctl_iscsi *)addr; 3129 3130 mtx_lock(&softc->ctl_lock); 3131 STAILQ_FOREACH(fe, &softc->fe_list, links) { 3132 if (strcmp(fe->port_name, "iscsi") == 0) 3133 break; 3134 } 3135 mtx_unlock(&softc->ctl_lock); 3136 3137 if (fe == NULL) { 3138 ci->status = CTL_ISCSI_ERROR; 3139 snprintf(ci->error_str, sizeof(ci->error_str), "Backend \"iscsi\" not found."); 3140 break; 3141 } 3142 3143 retval = fe->ioctl(dev, cmd, addr, flag, td); 3144 break; 3145 } 3146 default: { 3147 /* XXX KDM should we fix this? */ 3148#if 0 3149 struct ctl_backend_driver *backend; 3150 unsigned int type; 3151 int found; 3152 3153 found = 0; 3154 3155 /* 3156 * We encode the backend type as the ioctl type for backend 3157 * ioctls. So parse it out here, and then search for a 3158 * backend of this type. 3159 */ 3160 type = _IOC_TYPE(cmd); 3161 3162 STAILQ_FOREACH(backend, &softc->be_list, links) { 3163 if (backend->type == type) { 3164 found = 1; 3165 break; 3166 } 3167 } 3168 if (found == 0) { 3169 printf("ctl: unknown ioctl command %#lx or backend " 3170 "%d\n", cmd, type); 3171 retval = -EINVAL; 3172 break; 3173 } 3174 retval = backend->ioctl(dev, cmd, addr, flag, td); 3175#endif 3176 retval = ENOTTY; 3177 break; 3178 } 3179 } 3180 return (retval); 3181} 3182 3183uint32_t 3184ctl_get_initindex(struct ctl_nexus *nexus) 3185{ 3186 if (nexus->targ_port < CTL_MAX_PORTS) 3187 return (nexus->initid.id + 3188 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3189 else 3190 return (nexus->initid.id + 3191 ((nexus->targ_port - CTL_MAX_PORTS) * 3192 CTL_MAX_INIT_PER_PORT)); 3193} 3194 3195uint32_t 3196ctl_get_resindex(struct ctl_nexus *nexus) 3197{ 3198 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3199} 3200 3201uint32_t 3202ctl_port_idx(int port_num) 3203{ 3204 if (port_num < CTL_MAX_PORTS) 3205 return(port_num); 3206 else 3207 return(port_num - CTL_MAX_PORTS); 3208} 3209 3210/* 3211 * Note: This only works for bitmask sizes that are at least 32 bits, and 3212 * that are a power of 2. 3213 */ 3214int 3215ctl_ffz(uint32_t *mask, uint32_t size) 3216{ 3217 uint32_t num_chunks, num_pieces; 3218 int i, j; 3219 3220 num_chunks = (size >> 5); 3221 if (num_chunks == 0) 3222 num_chunks++; 3223 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3224 3225 for (i = 0; i < num_chunks; i++) { 3226 for (j = 0; j < num_pieces; j++) { 3227 if ((mask[i] & (1 << j)) == 0) 3228 return ((i << 5) + j); 3229 } 3230 } 3231 3232 return (-1); 3233} 3234 3235int 3236ctl_set_mask(uint32_t *mask, uint32_t bit) 3237{ 3238 uint32_t chunk, piece; 3239 3240 chunk = bit >> 5; 3241 piece = bit % (sizeof(uint32_t) * 8); 3242 3243 if ((mask[chunk] & (1 << piece)) != 0) 3244 return (-1); 3245 else 3246 mask[chunk] |= (1 << piece); 3247 3248 return (0); 3249} 3250 3251int 3252ctl_clear_mask(uint32_t *mask, uint32_t bit) 3253{ 3254 uint32_t chunk, piece; 3255 3256 chunk = bit >> 5; 3257 piece = bit % (sizeof(uint32_t) * 8); 3258 3259 if ((mask[chunk] & (1 << piece)) == 0) 3260 return (-1); 3261 else 3262 mask[chunk] &= ~(1 << piece); 3263 3264 return (0); 3265} 3266 3267int 3268ctl_is_set(uint32_t *mask, uint32_t bit) 3269{ 3270 uint32_t chunk, piece; 3271 3272 chunk = bit >> 5; 3273 piece = bit % (sizeof(uint32_t) * 8); 3274 3275 if ((mask[chunk] & (1 << piece)) == 0) 3276 return (0); 3277 else 3278 return (1); 3279} 3280 3281#ifdef unused 3282/* 3283 * The bus, target and lun are optional, they can be filled in later. 3284 * can_wait is used to determine whether we can wait on the malloc or not. 3285 */ 3286union ctl_io* 3287ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3288 uint32_t targ_lun, int can_wait) 3289{ 3290 union ctl_io *io; 3291 3292 if (can_wait) 3293 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3294 else 3295 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3296 3297 if (io != NULL) { 3298 io->io_hdr.io_type = io_type; 3299 io->io_hdr.targ_port = targ_port; 3300 /* 3301 * XXX KDM this needs to change/go away. We need to move 3302 * to a preallocated pool of ctl_scsiio structures. 3303 */ 3304 io->io_hdr.nexus.targ_target.id = targ_target; 3305 io->io_hdr.nexus.targ_lun = targ_lun; 3306 } 3307 3308 return (io); 3309} 3310 3311void 3312ctl_kfree_io(union ctl_io *io) 3313{ 3314 free(io, M_CTL); 3315} 3316#endif /* unused */ 3317 3318/* 3319 * ctl_softc, pool_type, total_ctl_io are passed in. 3320 * npool is passed out. 3321 */ 3322int 3323ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3324 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3325{ 3326 uint32_t i; 3327 union ctl_io *cur_io, *next_io; 3328 struct ctl_io_pool *pool; 3329 int retval; 3330 3331 retval = 0; 3332 3333 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3334 M_NOWAIT | M_ZERO); 3335 if (pool == NULL) { 3336 retval = -ENOMEM; 3337 goto bailout; 3338 } 3339 3340 pool->type = pool_type; 3341 pool->ctl_softc = ctl_softc; 3342 3343 mtx_lock(&ctl_softc->pool_lock); 3344 pool->id = ctl_softc->cur_pool_id++; 3345 mtx_unlock(&ctl_softc->pool_lock); 3346 3347 pool->flags = CTL_POOL_FLAG_NONE; 3348 pool->refcount = 1; /* Reference for validity. */ 3349 STAILQ_INIT(&pool->free_queue); 3350 3351 /* 3352 * XXX KDM other options here: 3353 * - allocate a page at a time 3354 * - allocate one big chunk of memory. 3355 * Page allocation might work well, but would take a little more 3356 * tracking. 3357 */ 3358 for (i = 0; i < total_ctl_io; i++) { 3359 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTL, 3360 M_NOWAIT); 3361 if (cur_io == NULL) { 3362 retval = ENOMEM; 3363 break; 3364 } 3365 cur_io->io_hdr.pool = pool; 3366 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3367 pool->total_ctl_io++; 3368 pool->free_ctl_io++; 3369 } 3370 3371 if (retval != 0) { 3372 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3373 cur_io != NULL; cur_io = next_io) { 3374 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3375 links); 3376 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3377 ctl_io_hdr, links); 3378 free(cur_io, M_CTL); 3379 } 3380 3381 free(pool, M_CTL); 3382 goto bailout; 3383 } 3384 mtx_lock(&ctl_softc->pool_lock); 3385 ctl_softc->num_pools++; 3386 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3387 /* 3388 * Increment our usage count if this is an external consumer, so we 3389 * can't get unloaded until the external consumer (most likely a 3390 * FETD) unloads and frees his pool. 3391 * 3392 * XXX KDM will this increment the caller's module use count, or 3393 * mine? 3394 */ 3395#if 0 3396 if ((pool_type != CTL_POOL_EMERGENCY) 3397 && (pool_type != CTL_POOL_INTERNAL) 3398 && (pool_type != CTL_POOL_IOCTL) 3399 && (pool_type != CTL_POOL_4OTHERSC)) 3400 MOD_INC_USE_COUNT; 3401#endif 3402 3403 mtx_unlock(&ctl_softc->pool_lock); 3404 3405 *npool = pool; 3406 3407bailout: 3408 3409 return (retval); 3410} 3411 3412static int 3413ctl_pool_acquire(struct ctl_io_pool *pool) 3414{ 3415 3416 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3417 3418 if (pool->flags & CTL_POOL_FLAG_INVALID) 3419 return (-EINVAL); 3420 3421 pool->refcount++; 3422 3423 return (0); 3424} 3425 3426static void 3427ctl_pool_release(struct ctl_io_pool *pool) 3428{ 3429 struct ctl_softc *ctl_softc = pool->ctl_softc; 3430 union ctl_io *io; 3431 3432 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3433 3434 if (--pool->refcount != 0) 3435 return; 3436 3437 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3438 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3439 links); 3440 free(io, M_CTL); 3441 } 3442 3443 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3444 ctl_softc->num_pools--; 3445 3446 /* 3447 * XXX KDM will this decrement the caller's usage count or mine? 3448 */ 3449#if 0 3450 if ((pool->type != CTL_POOL_EMERGENCY) 3451 && (pool->type != CTL_POOL_INTERNAL) 3452 && (pool->type != CTL_POOL_IOCTL)) 3453 MOD_DEC_USE_COUNT; 3454#endif 3455 3456 free(pool, M_CTL); 3457} 3458 3459void 3460ctl_pool_free(struct ctl_io_pool *pool) 3461{ 3462 struct ctl_softc *ctl_softc; 3463 3464 if (pool == NULL) 3465 return; 3466 3467 ctl_softc = pool->ctl_softc; 3468 mtx_lock(&ctl_softc->pool_lock); 3469 pool->flags |= CTL_POOL_FLAG_INVALID; 3470 ctl_pool_release(pool); 3471 mtx_unlock(&ctl_softc->pool_lock); 3472} 3473 3474/* 3475 * This routine does not block (except for spinlocks of course). 3476 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3477 * possible. 3478 */ 3479union ctl_io * 3480ctl_alloc_io(void *pool_ref) 3481{ 3482 union ctl_io *io; 3483 struct ctl_softc *ctl_softc; 3484 struct ctl_io_pool *pool, *npool; 3485 struct ctl_io_pool *emergency_pool; 3486 3487 pool = (struct ctl_io_pool *)pool_ref; 3488 3489 if (pool == NULL) { 3490 printf("%s: pool is NULL\n", __func__); 3491 return (NULL); 3492 } 3493 3494 emergency_pool = NULL; 3495 3496 ctl_softc = pool->ctl_softc; 3497 3498 mtx_lock(&ctl_softc->pool_lock); 3499 /* 3500 * First, try to get the io structure from the user's pool. 3501 */ 3502 if (ctl_pool_acquire(pool) == 0) { 3503 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3504 if (io != NULL) { 3505 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3506 pool->total_allocated++; 3507 pool->free_ctl_io--; 3508 mtx_unlock(&ctl_softc->pool_lock); 3509 return (io); 3510 } else 3511 ctl_pool_release(pool); 3512 } 3513 /* 3514 * If he doesn't have any io structures left, search for an 3515 * emergency pool and grab one from there. 3516 */ 3517 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3518 if (npool->type != CTL_POOL_EMERGENCY) 3519 continue; 3520 3521 if (ctl_pool_acquire(npool) != 0) 3522 continue; 3523 3524 emergency_pool = npool; 3525 3526 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3527 if (io != NULL) { 3528 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3529 npool->total_allocated++; 3530 npool->free_ctl_io--; 3531 mtx_unlock(&ctl_softc->pool_lock); 3532 return (io); 3533 } else 3534 ctl_pool_release(npool); 3535 } 3536 3537 /* Drop the spinlock before we malloc */ 3538 mtx_unlock(&ctl_softc->pool_lock); 3539 3540 /* 3541 * The emergency pool (if it exists) didn't have one, so try an 3542 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3543 */ 3544 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3545 if (io != NULL) { 3546 /* 3547 * If the emergency pool exists but is empty, add this 3548 * ctl_io to its list when it gets freed. 3549 */ 3550 if (emergency_pool != NULL) { 3551 mtx_lock(&ctl_softc->pool_lock); 3552 if (ctl_pool_acquire(emergency_pool) == 0) { 3553 io->io_hdr.pool = emergency_pool; 3554 emergency_pool->total_ctl_io++; 3555 /* 3556 * Need to bump this, otherwise 3557 * total_allocated and total_freed won't 3558 * match when we no longer have anything 3559 * outstanding. 3560 */ 3561 emergency_pool->total_allocated++; 3562 } 3563 mtx_unlock(&ctl_softc->pool_lock); 3564 } else 3565 io->io_hdr.pool = NULL; 3566 } 3567 3568 return (io); 3569} 3570 3571void 3572ctl_free_io(union ctl_io *io) 3573{ 3574 if (io == NULL) 3575 return; 3576 3577 /* 3578 * If this ctl_io has a pool, return it to that pool. 3579 */ 3580 if (io->io_hdr.pool != NULL) { 3581 struct ctl_io_pool *pool; 3582 3583 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3584 mtx_lock(&pool->ctl_softc->pool_lock); 3585 io->io_hdr.io_type = 0xff; 3586 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3587 pool->total_freed++; 3588 pool->free_ctl_io++; 3589 ctl_pool_release(pool); 3590 mtx_unlock(&pool->ctl_softc->pool_lock); 3591 } else { 3592 /* 3593 * Otherwise, just free it. We probably malloced it and 3594 * the emergency pool wasn't available. 3595 */ 3596 free(io, M_CTL); 3597 } 3598 3599} 3600 3601void 3602ctl_zero_io(union ctl_io *io) 3603{ 3604 void *pool_ref; 3605 3606 if (io == NULL) 3607 return; 3608 3609 /* 3610 * May need to preserve linked list pointers at some point too. 3611 */ 3612 pool_ref = io->io_hdr.pool; 3613 3614 memset(io, 0, sizeof(*io)); 3615 3616 io->io_hdr.pool = pool_ref; 3617} 3618 3619/* 3620 * This routine is currently used for internal copies of ctl_ios that need 3621 * to persist for some reason after we've already returned status to the 3622 * FETD. (Thus the flag set.) 3623 * 3624 * XXX XXX 3625 * Note that this makes a blind copy of all fields in the ctl_io, except 3626 * for the pool reference. This includes any memory that has been 3627 * allocated! That memory will no longer be valid after done has been 3628 * called, so this would be VERY DANGEROUS for command that actually does 3629 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3630 * start and stop commands, which don't transfer any data, so this is not a 3631 * problem. If it is used for anything else, the caller would also need to 3632 * allocate data buffer space and this routine would need to be modified to 3633 * copy the data buffer(s) as well. 3634 */ 3635void 3636ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3637{ 3638 void *pool_ref; 3639 3640 if ((src == NULL) 3641 || (dest == NULL)) 3642 return; 3643 3644 /* 3645 * May need to preserve linked list pointers at some point too. 3646 */ 3647 pool_ref = dest->io_hdr.pool; 3648 3649 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3650 3651 dest->io_hdr.pool = pool_ref; 3652 /* 3653 * We need to know that this is an internal copy, and doesn't need 3654 * to get passed back to the FETD that allocated it. 3655 */ 3656 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3657} 3658 3659#ifdef NEEDTOPORT 3660static void 3661ctl_update_power_subpage(struct copan_power_subpage *page) 3662{ 3663 int num_luns, num_partitions, config_type; 3664 struct ctl_softc *softc; 3665 cs_BOOL_t aor_present, shelf_50pct_power; 3666 cs_raidset_personality_t rs_type; 3667 int max_active_luns; 3668 3669 softc = control_softc; 3670 3671 /* subtract out the processor LUN */ 3672 num_luns = softc->num_luns - 1; 3673 /* 3674 * Default to 7 LUNs active, which was the only number we allowed 3675 * in the past. 3676 */ 3677 max_active_luns = 7; 3678 3679 num_partitions = config_GetRsPartitionInfo(); 3680 config_type = config_GetConfigType(); 3681 shelf_50pct_power = config_GetShelfPowerMode(); 3682 aor_present = config_IsAorRsPresent(); 3683 3684 rs_type = ddb_GetRsRaidType(1); 3685 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3686 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3687 EPRINT(0, "Unsupported RS type %d!", rs_type); 3688 } 3689 3690 3691 page->total_luns = num_luns; 3692 3693 switch (config_type) { 3694 case 40: 3695 /* 3696 * In a 40 drive configuration, it doesn't matter what DC 3697 * cards we have, whether we have AOR enabled or not, 3698 * partitioning or not, or what type of RAIDset we have. 3699 * In that scenario, we can power up every LUN we present 3700 * to the user. 3701 */ 3702 max_active_luns = num_luns; 3703 3704 break; 3705 case 64: 3706 if (shelf_50pct_power == CS_FALSE) { 3707 /* 25% power */ 3708 if (aor_present == CS_TRUE) { 3709 if (rs_type == 3710 CS_RAIDSET_PERSONALITY_RAID5) { 3711 max_active_luns = 7; 3712 } else if (rs_type == 3713 CS_RAIDSET_PERSONALITY_RAID1){ 3714 max_active_luns = 14; 3715 } else { 3716 /* XXX KDM now what?? */ 3717 } 3718 } else { 3719 if (rs_type == 3720 CS_RAIDSET_PERSONALITY_RAID5) { 3721 max_active_luns = 8; 3722 } else if (rs_type == 3723 CS_RAIDSET_PERSONALITY_RAID1){ 3724 max_active_luns = 16; 3725 } else { 3726 /* XXX KDM now what?? */ 3727 } 3728 } 3729 } else { 3730 /* 50% power */ 3731 /* 3732 * With 50% power in a 64 drive configuration, we 3733 * can power all LUNs we present. 3734 */ 3735 max_active_luns = num_luns; 3736 } 3737 break; 3738 case 112: 3739 if (shelf_50pct_power == CS_FALSE) { 3740 /* 25% power */ 3741 if (aor_present == CS_TRUE) { 3742 if (rs_type == 3743 CS_RAIDSET_PERSONALITY_RAID5) { 3744 max_active_luns = 7; 3745 } else if (rs_type == 3746 CS_RAIDSET_PERSONALITY_RAID1){ 3747 max_active_luns = 14; 3748 } else { 3749 /* XXX KDM now what?? */ 3750 } 3751 } else { 3752 if (rs_type == 3753 CS_RAIDSET_PERSONALITY_RAID5) { 3754 max_active_luns = 8; 3755 } else if (rs_type == 3756 CS_RAIDSET_PERSONALITY_RAID1){ 3757 max_active_luns = 16; 3758 } else { 3759 /* XXX KDM now what?? */ 3760 } 3761 } 3762 } else { 3763 /* 50% power */ 3764 if (aor_present == CS_TRUE) { 3765 if (rs_type == 3766 CS_RAIDSET_PERSONALITY_RAID5) { 3767 max_active_luns = 14; 3768 } else if (rs_type == 3769 CS_RAIDSET_PERSONALITY_RAID1){ 3770 /* 3771 * We're assuming here that disk 3772 * caching is enabled, and so we're 3773 * able to power up half of each 3774 * LUN, and cache all writes. 3775 */ 3776 max_active_luns = num_luns; 3777 } else { 3778 /* XXX KDM now what?? */ 3779 } 3780 } else { 3781 if (rs_type == 3782 CS_RAIDSET_PERSONALITY_RAID5) { 3783 max_active_luns = 15; 3784 } else if (rs_type == 3785 CS_RAIDSET_PERSONALITY_RAID1){ 3786 max_active_luns = 30; 3787 } else { 3788 /* XXX KDM now what?? */ 3789 } 3790 } 3791 } 3792 break; 3793 default: 3794 /* 3795 * In this case, we have an unknown configuration, so we 3796 * just use the default from above. 3797 */ 3798 break; 3799 } 3800 3801 page->max_active_luns = max_active_luns; 3802#if 0 3803 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3804 page->total_luns, page->max_active_luns); 3805#endif 3806} 3807#endif /* NEEDTOPORT */ 3808 3809/* 3810 * This routine could be used in the future to load default and/or saved 3811 * mode page parameters for a particuar lun. 3812 */ 3813static int 3814ctl_init_page_index(struct ctl_lun *lun) 3815{ 3816 int i; 3817 struct ctl_page_index *page_index; 3818 struct ctl_softc *softc; 3819 3820 memcpy(&lun->mode_pages.index, page_index_template, 3821 sizeof(page_index_template)); 3822 3823 softc = lun->ctl_softc; 3824 3825 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3826 3827 page_index = &lun->mode_pages.index[i]; 3828 /* 3829 * If this is a disk-only mode page, there's no point in 3830 * setting it up. For some pages, we have to have some 3831 * basic information about the disk in order to calculate the 3832 * mode page data. 3833 */ 3834 if ((lun->be_lun->lun_type != T_DIRECT) 3835 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3836 continue; 3837 3838 switch (page_index->page_code & SMPH_PC_MASK) { 3839 case SMS_FORMAT_DEVICE_PAGE: { 3840 struct scsi_format_page *format_page; 3841 3842 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3843 panic("subpage is incorrect!"); 3844 3845 /* 3846 * Sectors per track are set above. Bytes per 3847 * sector need to be set here on a per-LUN basis. 3848 */ 3849 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3850 &format_page_default, 3851 sizeof(format_page_default)); 3852 memcpy(&lun->mode_pages.format_page[ 3853 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3854 sizeof(format_page_changeable)); 3855 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3856 &format_page_default, 3857 sizeof(format_page_default)); 3858 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3859 &format_page_default, 3860 sizeof(format_page_default)); 3861 3862 format_page = &lun->mode_pages.format_page[ 3863 CTL_PAGE_CURRENT]; 3864 scsi_ulto2b(lun->be_lun->blocksize, 3865 format_page->bytes_per_sector); 3866 3867 format_page = &lun->mode_pages.format_page[ 3868 CTL_PAGE_DEFAULT]; 3869 scsi_ulto2b(lun->be_lun->blocksize, 3870 format_page->bytes_per_sector); 3871 3872 format_page = &lun->mode_pages.format_page[ 3873 CTL_PAGE_SAVED]; 3874 scsi_ulto2b(lun->be_lun->blocksize, 3875 format_page->bytes_per_sector); 3876 3877 page_index->page_data = 3878 (uint8_t *)lun->mode_pages.format_page; 3879 break; 3880 } 3881 case SMS_RIGID_DISK_PAGE: { 3882 struct scsi_rigid_disk_page *rigid_disk_page; 3883 uint32_t sectors_per_cylinder; 3884 uint64_t cylinders; 3885#ifndef __XSCALE__ 3886 int shift; 3887#endif /* !__XSCALE__ */ 3888 3889 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3890 panic("invalid subpage value %d", 3891 page_index->subpage); 3892 3893 /* 3894 * Rotation rate and sectors per track are set 3895 * above. We calculate the cylinders here based on 3896 * capacity. Due to the number of heads and 3897 * sectors per track we're using, smaller arrays 3898 * may turn out to have 0 cylinders. Linux and 3899 * FreeBSD don't pay attention to these mode pages 3900 * to figure out capacity, but Solaris does. It 3901 * seems to deal with 0 cylinders just fine, and 3902 * works out a fake geometry based on the capacity. 3903 */ 3904 memcpy(&lun->mode_pages.rigid_disk_page[ 3905 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3906 sizeof(rigid_disk_page_default)); 3907 memcpy(&lun->mode_pages.rigid_disk_page[ 3908 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3909 sizeof(rigid_disk_page_changeable)); 3910 memcpy(&lun->mode_pages.rigid_disk_page[ 3911 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3912 sizeof(rigid_disk_page_default)); 3913 memcpy(&lun->mode_pages.rigid_disk_page[ 3914 CTL_PAGE_SAVED], &rigid_disk_page_default, 3915 sizeof(rigid_disk_page_default)); 3916 3917 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3918 CTL_DEFAULT_HEADS; 3919 3920 /* 3921 * The divide method here will be more accurate, 3922 * probably, but results in floating point being 3923 * used in the kernel on i386 (__udivdi3()). On the 3924 * XScale, though, __udivdi3() is implemented in 3925 * software. 3926 * 3927 * The shift method for cylinder calculation is 3928 * accurate if sectors_per_cylinder is a power of 3929 * 2. Otherwise it might be slightly off -- you 3930 * might have a bit of a truncation problem. 3931 */ 3932#ifdef __XSCALE__ 3933 cylinders = (lun->be_lun->maxlba + 1) / 3934 sectors_per_cylinder; 3935#else 3936 for (shift = 31; shift > 0; shift--) { 3937 if (sectors_per_cylinder & (1 << shift)) 3938 break; 3939 } 3940 cylinders = (lun->be_lun->maxlba + 1) >> shift; 3941#endif 3942 3943 /* 3944 * We've basically got 3 bytes, or 24 bits for the 3945 * cylinder size in the mode page. If we're over, 3946 * just round down to 2^24. 3947 */ 3948 if (cylinders > 0xffffff) 3949 cylinders = 0xffffff; 3950 3951 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3952 CTL_PAGE_CURRENT]; 3953 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3954 3955 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3956 CTL_PAGE_DEFAULT]; 3957 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3958 3959 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3960 CTL_PAGE_SAVED]; 3961 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3962 3963 page_index->page_data = 3964 (uint8_t *)lun->mode_pages.rigid_disk_page; 3965 break; 3966 } 3967 case SMS_CACHING_PAGE: { 3968 3969 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3970 panic("invalid subpage value %d", 3971 page_index->subpage); 3972 /* 3973 * Defaults should be okay here, no calculations 3974 * needed. 3975 */ 3976 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 3977 &caching_page_default, 3978 sizeof(caching_page_default)); 3979 memcpy(&lun->mode_pages.caching_page[ 3980 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 3981 sizeof(caching_page_changeable)); 3982 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 3983 &caching_page_default, 3984 sizeof(caching_page_default)); 3985 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 3986 &caching_page_default, 3987 sizeof(caching_page_default)); 3988 page_index->page_data = 3989 (uint8_t *)lun->mode_pages.caching_page; 3990 break; 3991 } 3992 case SMS_CONTROL_MODE_PAGE: { 3993 3994 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3995 panic("invalid subpage value %d", 3996 page_index->subpage); 3997 3998 /* 3999 * Defaults should be okay here, no calculations 4000 * needed. 4001 */ 4002 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4003 &control_page_default, 4004 sizeof(control_page_default)); 4005 memcpy(&lun->mode_pages.control_page[ 4006 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4007 sizeof(control_page_changeable)); 4008 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4009 &control_page_default, 4010 sizeof(control_page_default)); 4011 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4012 &control_page_default, 4013 sizeof(control_page_default)); 4014 page_index->page_data = 4015 (uint8_t *)lun->mode_pages.control_page; 4016 break; 4017 4018 } 4019 case SMS_VENDOR_SPECIFIC_PAGE:{ 4020 switch (page_index->subpage) { 4021 case PWR_SUBPAGE_CODE: { 4022 struct copan_power_subpage *current_page, 4023 *saved_page; 4024 4025 memcpy(&lun->mode_pages.power_subpage[ 4026 CTL_PAGE_CURRENT], 4027 &power_page_default, 4028 sizeof(power_page_default)); 4029 memcpy(&lun->mode_pages.power_subpage[ 4030 CTL_PAGE_CHANGEABLE], 4031 &power_page_changeable, 4032 sizeof(power_page_changeable)); 4033 memcpy(&lun->mode_pages.power_subpage[ 4034 CTL_PAGE_DEFAULT], 4035 &power_page_default, 4036 sizeof(power_page_default)); 4037 memcpy(&lun->mode_pages.power_subpage[ 4038 CTL_PAGE_SAVED], 4039 &power_page_default, 4040 sizeof(power_page_default)); 4041 page_index->page_data = 4042 (uint8_t *)lun->mode_pages.power_subpage; 4043 4044 current_page = (struct copan_power_subpage *) 4045 (page_index->page_data + 4046 (page_index->page_len * 4047 CTL_PAGE_CURRENT)); 4048 saved_page = (struct copan_power_subpage *) 4049 (page_index->page_data + 4050 (page_index->page_len * 4051 CTL_PAGE_SAVED)); 4052 break; 4053 } 4054 case APS_SUBPAGE_CODE: { 4055 struct copan_aps_subpage *current_page, 4056 *saved_page; 4057 4058 // This gets set multiple times but 4059 // it should always be the same. It's 4060 // only done during init so who cares. 4061 index_to_aps_page = i; 4062 4063 memcpy(&lun->mode_pages.aps_subpage[ 4064 CTL_PAGE_CURRENT], 4065 &aps_page_default, 4066 sizeof(aps_page_default)); 4067 memcpy(&lun->mode_pages.aps_subpage[ 4068 CTL_PAGE_CHANGEABLE], 4069 &aps_page_changeable, 4070 sizeof(aps_page_changeable)); 4071 memcpy(&lun->mode_pages.aps_subpage[ 4072 CTL_PAGE_DEFAULT], 4073 &aps_page_default, 4074 sizeof(aps_page_default)); 4075 memcpy(&lun->mode_pages.aps_subpage[ 4076 CTL_PAGE_SAVED], 4077 &aps_page_default, 4078 sizeof(aps_page_default)); 4079 page_index->page_data = 4080 (uint8_t *)lun->mode_pages.aps_subpage; 4081 4082 current_page = (struct copan_aps_subpage *) 4083 (page_index->page_data + 4084 (page_index->page_len * 4085 CTL_PAGE_CURRENT)); 4086 saved_page = (struct copan_aps_subpage *) 4087 (page_index->page_data + 4088 (page_index->page_len * 4089 CTL_PAGE_SAVED)); 4090 break; 4091 } 4092 case DBGCNF_SUBPAGE_CODE: { 4093 struct copan_debugconf_subpage *current_page, 4094 *saved_page; 4095 4096 memcpy(&lun->mode_pages.debugconf_subpage[ 4097 CTL_PAGE_CURRENT], 4098 &debugconf_page_default, 4099 sizeof(debugconf_page_default)); 4100 memcpy(&lun->mode_pages.debugconf_subpage[ 4101 CTL_PAGE_CHANGEABLE], 4102 &debugconf_page_changeable, 4103 sizeof(debugconf_page_changeable)); 4104 memcpy(&lun->mode_pages.debugconf_subpage[ 4105 CTL_PAGE_DEFAULT], 4106 &debugconf_page_default, 4107 sizeof(debugconf_page_default)); 4108 memcpy(&lun->mode_pages.debugconf_subpage[ 4109 CTL_PAGE_SAVED], 4110 &debugconf_page_default, 4111 sizeof(debugconf_page_default)); 4112 page_index->page_data = 4113 (uint8_t *)lun->mode_pages.debugconf_subpage; 4114 4115 current_page = (struct copan_debugconf_subpage *) 4116 (page_index->page_data + 4117 (page_index->page_len * 4118 CTL_PAGE_CURRENT)); 4119 saved_page = (struct copan_debugconf_subpage *) 4120 (page_index->page_data + 4121 (page_index->page_len * 4122 CTL_PAGE_SAVED)); 4123 break; 4124 } 4125 default: 4126 panic("invalid subpage value %d", 4127 page_index->subpage); 4128 break; 4129 } 4130 break; 4131 } 4132 default: 4133 panic("invalid page value %d", 4134 page_index->page_code & SMPH_PC_MASK); 4135 break; 4136 } 4137 } 4138 4139 return (CTL_RETVAL_COMPLETE); 4140} 4141 4142/* 4143 * LUN allocation. 4144 * 4145 * Requirements: 4146 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4147 * wants us to allocate the LUN and he can block. 4148 * - ctl_softc is always set 4149 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4150 * 4151 * Returns 0 for success, non-zero (errno) for failure. 4152 */ 4153static int 4154ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4155 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4156{ 4157 struct ctl_lun *nlun, *lun; 4158 struct ctl_frontend *fe; 4159 int lun_number, i, lun_malloced; 4160 4161 if (be_lun == NULL) 4162 return (EINVAL); 4163 4164 /* 4165 * We currently only support Direct Access or Processor LUN types. 4166 */ 4167 switch (be_lun->lun_type) { 4168 case T_DIRECT: 4169 break; 4170 case T_PROCESSOR: 4171 break; 4172 case T_SEQUENTIAL: 4173 case T_CHANGER: 4174 default: 4175 be_lun->lun_config_status(be_lun->be_lun, 4176 CTL_LUN_CONFIG_FAILURE); 4177 break; 4178 } 4179 if (ctl_lun == NULL) { 4180 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4181 lun_malloced = 1; 4182 } else { 4183 lun_malloced = 0; 4184 lun = ctl_lun; 4185 } 4186 4187 memset(lun, 0, sizeof(*lun)); 4188 if (lun_malloced) 4189 lun->flags = CTL_LUN_MALLOCED; 4190 4191 mtx_lock(&ctl_softc->ctl_lock); 4192 /* 4193 * See if the caller requested a particular LUN number. If so, see 4194 * if it is available. Otherwise, allocate the first available LUN. 4195 */ 4196 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4197 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4198 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4199 mtx_unlock(&ctl_softc->ctl_lock); 4200 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4201 printf("ctl: requested LUN ID %d is higher " 4202 "than CTL_MAX_LUNS - 1 (%d)\n", 4203 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4204 } else { 4205 /* 4206 * XXX KDM return an error, or just assign 4207 * another LUN ID in this case?? 4208 */ 4209 printf("ctl: requested LUN ID %d is already " 4210 "in use\n", be_lun->req_lun_id); 4211 } 4212 if (lun->flags & CTL_LUN_MALLOCED) 4213 free(lun, M_CTL); 4214 be_lun->lun_config_status(be_lun->be_lun, 4215 CTL_LUN_CONFIG_FAILURE); 4216 return (ENOSPC); 4217 } 4218 lun_number = be_lun->req_lun_id; 4219 } else { 4220 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4221 if (lun_number == -1) { 4222 mtx_unlock(&ctl_softc->ctl_lock); 4223 printf("ctl: can't allocate LUN on target %ju, out of " 4224 "LUNs\n", (uintmax_t)target_id.id); 4225 if (lun->flags & CTL_LUN_MALLOCED) 4226 free(lun, M_CTL); 4227 be_lun->lun_config_status(be_lun->be_lun, 4228 CTL_LUN_CONFIG_FAILURE); 4229 return (ENOSPC); 4230 } 4231 } 4232 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4233 4234 mtx_init(&lun->lun_lock, "CTL LUN", NULL, MTX_DEF); 4235 lun->target = target_id; 4236 lun->lun = lun_number; 4237 lun->be_lun = be_lun; 4238 /* 4239 * The processor LUN is always enabled. Disk LUNs come on line 4240 * disabled, and must be enabled by the backend. 4241 */ 4242 lun->flags |= CTL_LUN_DISABLED; 4243 lun->backend = be_lun->be; 4244 be_lun->ctl_lun = lun; 4245 be_lun->lun_id = lun_number; 4246 atomic_add_int(&be_lun->be->num_luns, 1); 4247 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4248 lun->flags |= CTL_LUN_STOPPED; 4249 4250 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4251 lun->flags |= CTL_LUN_INOPERABLE; 4252 4253 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4254 lun->flags |= CTL_LUN_PRIMARY_SC; 4255 4256 lun->ctl_softc = ctl_softc; 4257 TAILQ_INIT(&lun->ooa_queue); 4258 TAILQ_INIT(&lun->blocked_queue); 4259 STAILQ_INIT(&lun->error_list); 4260 4261 /* 4262 * Initialize the mode page index. 4263 */ 4264 ctl_init_page_index(lun); 4265 4266 /* 4267 * Set the poweron UA for all initiators on this LUN only. 4268 */ 4269 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4270 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4271 4272 /* 4273 * Now, before we insert this lun on the lun list, set the lun 4274 * inventory changed UA for all other luns. 4275 */ 4276 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4277 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4278 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4279 } 4280 } 4281 4282 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4283 4284 ctl_softc->ctl_luns[lun_number] = lun; 4285 4286 ctl_softc->num_luns++; 4287 4288 /* Setup statistics gathering */ 4289 lun->stats.device_type = be_lun->lun_type; 4290 lun->stats.lun_number = lun_number; 4291 if (lun->stats.device_type == T_DIRECT) 4292 lun->stats.blocksize = be_lun->blocksize; 4293 else 4294 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4295 for (i = 0;i < CTL_MAX_PORTS;i++) 4296 lun->stats.ports[i].targ_port = i; 4297 4298 mtx_unlock(&ctl_softc->ctl_lock); 4299 4300 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4301 4302 /* 4303 * Run through each registered FETD and bring it online if it isn't 4304 * already. Enable the target ID if it hasn't been enabled, and 4305 * enable this particular LUN. 4306 */ 4307 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4308 int retval; 4309 4310 /* 4311 * XXX KDM this only works for ONE TARGET ID. We'll need 4312 * to do things differently if we go to a multiple target 4313 * ID scheme. 4314 */ 4315 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4316 4317 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4318 if (retval != 0) { 4319 printf("ctl_alloc_lun: FETD %s port %d " 4320 "returned error %d for targ_enable on " 4321 "target %ju\n", fe->port_name, 4322 fe->targ_port, retval, 4323 (uintmax_t)target_id.id); 4324 } else 4325 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4326 } 4327 4328 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4329 if (retval != 0) { 4330 printf("ctl_alloc_lun: FETD %s port %d returned error " 4331 "%d for lun_enable on target %ju lun %d\n", 4332 fe->port_name, fe->targ_port, retval, 4333 (uintmax_t)target_id.id, lun_number); 4334 } else 4335 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4336 } 4337 return (0); 4338} 4339 4340/* 4341 * Delete a LUN. 4342 * Assumptions: 4343 * - LUN has already been marked invalid and any pending I/O has been taken 4344 * care of. 4345 */ 4346static int 4347ctl_free_lun(struct ctl_lun *lun) 4348{ 4349 struct ctl_softc *softc; 4350#if 0 4351 struct ctl_frontend *fe; 4352#endif 4353 struct ctl_lun *nlun; 4354 int i; 4355 4356 softc = lun->ctl_softc; 4357 4358 mtx_assert(&softc->ctl_lock, MA_OWNED); 4359 4360 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4361 4362 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4363 4364 softc->ctl_luns[lun->lun] = NULL; 4365 4366 if (!TAILQ_EMPTY(&lun->ooa_queue)) 4367 panic("Freeing a LUN %p with outstanding I/O!!\n", lun); 4368 4369 softc->num_luns--; 4370 4371 /* 4372 * XXX KDM this scheme only works for a single target/multiple LUN 4373 * setup. It needs to be revamped for a multiple target scheme. 4374 * 4375 * XXX KDM this results in fe->lun_disable() getting called twice, 4376 * once when ctl_disable_lun() is called, and a second time here. 4377 * We really need to re-think the LUN disable semantics. There 4378 * should probably be several steps/levels to LUN removal: 4379 * - disable 4380 * - invalidate 4381 * - free 4382 * 4383 * Right now we only have a disable method when communicating to 4384 * the front end ports, at least for individual LUNs. 4385 */ 4386#if 0 4387 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4388 int retval; 4389 4390 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4391 lun->lun); 4392 if (retval != 0) { 4393 printf("ctl_free_lun: FETD %s port %d returned error " 4394 "%d for lun_disable on target %ju lun %jd\n", 4395 fe->port_name, fe->targ_port, retval, 4396 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4397 } 4398 4399 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4400 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4401 4402 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4403 if (retval != 0) { 4404 printf("ctl_free_lun: FETD %s port %d " 4405 "returned error %d for targ_disable on " 4406 "target %ju\n", fe->port_name, 4407 fe->targ_port, retval, 4408 (uintmax_t)lun->target.id); 4409 } else 4410 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4411 4412 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4413 continue; 4414 4415#if 0 4416 fe->port_offline(fe->onoff_arg); 4417 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4418#endif 4419 } 4420 } 4421#endif 4422 4423 /* 4424 * Tell the backend to free resources, if this LUN has a backend. 4425 */ 4426 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4427 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4428 4429 mtx_destroy(&lun->lun_lock); 4430 if (lun->flags & CTL_LUN_MALLOCED) 4431 free(lun, M_CTL); 4432 4433 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4434 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4435 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4436 } 4437 } 4438 4439 return (0); 4440} 4441 4442static void 4443ctl_create_lun(struct ctl_be_lun *be_lun) 4444{ 4445 struct ctl_softc *ctl_softc; 4446 4447 ctl_softc = control_softc; 4448 4449 /* 4450 * ctl_alloc_lun() should handle all potential failure cases. 4451 */ 4452 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4453} 4454 4455int 4456ctl_add_lun(struct ctl_be_lun *be_lun) 4457{ 4458 struct ctl_softc *ctl_softc = control_softc; 4459 4460 mtx_lock(&ctl_softc->ctl_lock); 4461 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4462 mtx_unlock(&ctl_softc->ctl_lock); 4463 wakeup(&ctl_softc->pending_lun_queue); 4464 4465 return (0); 4466} 4467 4468int 4469ctl_enable_lun(struct ctl_be_lun *be_lun) 4470{ 4471 struct ctl_softc *ctl_softc; 4472 struct ctl_frontend *fe, *nfe; 4473 struct ctl_lun *lun; 4474 int retval; 4475 4476 ctl_softc = control_softc; 4477 4478 lun = (struct ctl_lun *)be_lun->ctl_lun; 4479 4480 mtx_lock(&ctl_softc->ctl_lock); 4481 mtx_lock(&lun->lun_lock); 4482 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4483 /* 4484 * eh? Why did we get called if the LUN is already 4485 * enabled? 4486 */ 4487 mtx_unlock(&lun->lun_lock); 4488 mtx_unlock(&ctl_softc->ctl_lock); 4489 return (0); 4490 } 4491 lun->flags &= ~CTL_LUN_DISABLED; 4492 mtx_unlock(&lun->lun_lock); 4493 4494 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4495 nfe = STAILQ_NEXT(fe, links); 4496 4497 /* 4498 * Drop the lock while we call the FETD's enable routine. 4499 * This can lead to a callback into CTL (at least in the 4500 * case of the internal initiator frontend. 4501 */ 4502 mtx_unlock(&ctl_softc->ctl_lock); 4503 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4504 mtx_lock(&ctl_softc->ctl_lock); 4505 if (retval != 0) { 4506 printf("%s: FETD %s port %d returned error " 4507 "%d for lun_enable on target %ju lun %jd\n", 4508 __func__, fe->port_name, fe->targ_port, retval, 4509 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4510 } 4511#if 0 4512 else { 4513 /* NOTE: TODO: why does lun enable affect port status? */ 4514 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4515 } 4516#endif 4517 } 4518 4519 mtx_unlock(&ctl_softc->ctl_lock); 4520 4521 return (0); 4522} 4523 4524int 4525ctl_disable_lun(struct ctl_be_lun *be_lun) 4526{ 4527 struct ctl_softc *ctl_softc; 4528 struct ctl_frontend *fe; 4529 struct ctl_lun *lun; 4530 int retval; 4531 4532 ctl_softc = control_softc; 4533 4534 lun = (struct ctl_lun *)be_lun->ctl_lun; 4535 4536 mtx_lock(&ctl_softc->ctl_lock); 4537 mtx_lock(&lun->lun_lock); 4538 if (lun->flags & CTL_LUN_DISABLED) { 4539 mtx_unlock(&lun->lun_lock); 4540 mtx_unlock(&ctl_softc->ctl_lock); 4541 return (0); 4542 } 4543 lun->flags |= CTL_LUN_DISABLED; 4544 mtx_unlock(&lun->lun_lock); 4545 4546 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4547 mtx_unlock(&ctl_softc->ctl_lock); 4548 /* 4549 * Drop the lock before we call the frontend's disable 4550 * routine, to avoid lock order reversals. 4551 * 4552 * XXX KDM what happens if the frontend list changes while 4553 * we're traversing it? It's unlikely, but should be handled. 4554 */ 4555 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4556 lun->lun); 4557 mtx_lock(&ctl_softc->ctl_lock); 4558 if (retval != 0) { 4559 printf("ctl_alloc_lun: FETD %s port %d returned error " 4560 "%d for lun_disable on target %ju lun %jd\n", 4561 fe->port_name, fe->targ_port, retval, 4562 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4563 } 4564 } 4565 4566 mtx_unlock(&ctl_softc->ctl_lock); 4567 4568 return (0); 4569} 4570 4571int 4572ctl_start_lun(struct ctl_be_lun *be_lun) 4573{ 4574 struct ctl_softc *ctl_softc; 4575 struct ctl_lun *lun; 4576 4577 ctl_softc = control_softc; 4578 4579 lun = (struct ctl_lun *)be_lun->ctl_lun; 4580 4581 mtx_lock(&lun->lun_lock); 4582 lun->flags &= ~CTL_LUN_STOPPED; 4583 mtx_unlock(&lun->lun_lock); 4584 4585 return (0); 4586} 4587 4588int 4589ctl_stop_lun(struct ctl_be_lun *be_lun) 4590{ 4591 struct ctl_softc *ctl_softc; 4592 struct ctl_lun *lun; 4593 4594 ctl_softc = control_softc; 4595 4596 lun = (struct ctl_lun *)be_lun->ctl_lun; 4597 4598 mtx_lock(&lun->lun_lock); 4599 lun->flags |= CTL_LUN_STOPPED; 4600 mtx_unlock(&lun->lun_lock); 4601 4602 return (0); 4603} 4604 4605int 4606ctl_lun_offline(struct ctl_be_lun *be_lun) 4607{ 4608 struct ctl_softc *ctl_softc; 4609 struct ctl_lun *lun; 4610 4611 ctl_softc = control_softc; 4612 4613 lun = (struct ctl_lun *)be_lun->ctl_lun; 4614 4615 mtx_lock(&lun->lun_lock); 4616 lun->flags |= CTL_LUN_OFFLINE; 4617 mtx_unlock(&lun->lun_lock); 4618 4619 return (0); 4620} 4621 4622int 4623ctl_lun_online(struct ctl_be_lun *be_lun) 4624{ 4625 struct ctl_softc *ctl_softc; 4626 struct ctl_lun *lun; 4627 4628 ctl_softc = control_softc; 4629 4630 lun = (struct ctl_lun *)be_lun->ctl_lun; 4631 4632 mtx_lock(&lun->lun_lock); 4633 lun->flags &= ~CTL_LUN_OFFLINE; 4634 mtx_unlock(&lun->lun_lock); 4635 4636 return (0); 4637} 4638 4639int 4640ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4641{ 4642 struct ctl_softc *ctl_softc; 4643 struct ctl_lun *lun; 4644 4645 ctl_softc = control_softc; 4646 4647 lun = (struct ctl_lun *)be_lun->ctl_lun; 4648 4649 mtx_lock(&lun->lun_lock); 4650 4651 /* 4652 * The LUN needs to be disabled before it can be marked invalid. 4653 */ 4654 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4655 mtx_unlock(&lun->lun_lock); 4656 return (-1); 4657 } 4658 /* 4659 * Mark the LUN invalid. 4660 */ 4661 lun->flags |= CTL_LUN_INVALID; 4662 4663 /* 4664 * If there is nothing in the OOA queue, go ahead and free the LUN. 4665 * If we have something in the OOA queue, we'll free it when the 4666 * last I/O completes. 4667 */ 4668 if (TAILQ_EMPTY(&lun->ooa_queue)) { 4669 mtx_unlock(&lun->lun_lock); 4670 mtx_lock(&ctl_softc->ctl_lock); 4671 ctl_free_lun(lun); 4672 mtx_unlock(&ctl_softc->ctl_lock); 4673 } else 4674 mtx_unlock(&lun->lun_lock); 4675 4676 return (0); 4677} 4678 4679int 4680ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4681{ 4682 struct ctl_softc *ctl_softc; 4683 struct ctl_lun *lun; 4684 4685 ctl_softc = control_softc; 4686 lun = (struct ctl_lun *)be_lun->ctl_lun; 4687 4688 mtx_lock(&lun->lun_lock); 4689 lun->flags |= CTL_LUN_INOPERABLE; 4690 mtx_unlock(&lun->lun_lock); 4691 4692 return (0); 4693} 4694 4695int 4696ctl_lun_operable(struct ctl_be_lun *be_lun) 4697{ 4698 struct ctl_softc *ctl_softc; 4699 struct ctl_lun *lun; 4700 4701 ctl_softc = control_softc; 4702 lun = (struct ctl_lun *)be_lun->ctl_lun; 4703 4704 mtx_lock(&lun->lun_lock); 4705 lun->flags &= ~CTL_LUN_INOPERABLE; 4706 mtx_unlock(&lun->lun_lock); 4707 4708 return (0); 4709} 4710 4711int 4712ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4713 int lock) 4714{ 4715 struct ctl_softc *softc; 4716 struct ctl_lun *lun; 4717 struct copan_aps_subpage *current_sp; 4718 struct ctl_page_index *page_index; 4719 int i; 4720 4721 softc = control_softc; 4722 4723 mtx_lock(&softc->ctl_lock); 4724 4725 lun = (struct ctl_lun *)be_lun->ctl_lun; 4726 mtx_lock(&lun->lun_lock); 4727 4728 page_index = NULL; 4729 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4730 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4731 APS_PAGE_CODE) 4732 continue; 4733 4734 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4735 continue; 4736 page_index = &lun->mode_pages.index[i]; 4737 } 4738 4739 if (page_index == NULL) { 4740 mtx_unlock(&lun->lun_lock); 4741 mtx_unlock(&softc->ctl_lock); 4742 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4743 (uintmax_t)lun->lun); 4744 return (1); 4745 } 4746#if 0 4747 if ((softc->aps_locked_lun != 0) 4748 && (softc->aps_locked_lun != lun->lun)) { 4749 printf("%s: attempt to lock LUN %llu when %llu is already " 4750 "locked\n"); 4751 mtx_unlock(&lun->lun_lock); 4752 mtx_unlock(&softc->ctl_lock); 4753 return (1); 4754 } 4755#endif 4756 4757 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4758 (page_index->page_len * CTL_PAGE_CURRENT)); 4759 4760 if (lock != 0) { 4761 current_sp->lock_active = APS_LOCK_ACTIVE; 4762 softc->aps_locked_lun = lun->lun; 4763 } else { 4764 current_sp->lock_active = 0; 4765 softc->aps_locked_lun = 0; 4766 } 4767 4768 4769 /* 4770 * If we're in HA mode, try to send the lock message to the other 4771 * side. 4772 */ 4773 if (ctl_is_single == 0) { 4774 int isc_retval; 4775 union ctl_ha_msg lock_msg; 4776 4777 lock_msg.hdr.nexus = *nexus; 4778 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4779 if (lock != 0) 4780 lock_msg.aps.lock_flag = 1; 4781 else 4782 lock_msg.aps.lock_flag = 0; 4783 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4784 sizeof(lock_msg), 0); 4785 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4786 printf("%s: APS (lock=%d) error returned from " 4787 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4788 mtx_unlock(&lun->lun_lock); 4789 mtx_unlock(&softc->ctl_lock); 4790 return (1); 4791 } 4792 } 4793 4794 mtx_unlock(&lun->lun_lock); 4795 mtx_unlock(&softc->ctl_lock); 4796 4797 return (0); 4798} 4799 4800void 4801ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4802{ 4803 struct ctl_lun *lun; 4804 struct ctl_softc *softc; 4805 int i; 4806 4807 softc = control_softc; 4808 4809 lun = (struct ctl_lun *)be_lun->ctl_lun; 4810 4811 mtx_lock(&lun->lun_lock); 4812 4813 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4814 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4815 4816 mtx_unlock(&lun->lun_lock); 4817} 4818 4819/* 4820 * Backend "memory move is complete" callback for requests that never 4821 * make it down to say RAIDCore's configuration code. 4822 */ 4823int 4824ctl_config_move_done(union ctl_io *io) 4825{ 4826 int retval; 4827 4828 retval = CTL_RETVAL_COMPLETE; 4829 4830 4831 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4832 /* 4833 * XXX KDM this shouldn't happen, but what if it does? 4834 */ 4835 if (io->io_hdr.io_type != CTL_IO_SCSI) 4836 panic("I/O type isn't CTL_IO_SCSI!"); 4837 4838 if ((io->io_hdr.port_status == 0) 4839 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4840 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4841 io->io_hdr.status = CTL_SUCCESS; 4842 else if ((io->io_hdr.port_status != 0) 4843 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4844 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4845 /* 4846 * For hardware error sense keys, the sense key 4847 * specific value is defined to be a retry count, 4848 * but we use it to pass back an internal FETD 4849 * error code. XXX KDM Hopefully the FETD is only 4850 * using 16 bits for an error code, since that's 4851 * all the space we have in the sks field. 4852 */ 4853 ctl_set_internal_failure(&io->scsiio, 4854 /*sks_valid*/ 1, 4855 /*retry_count*/ 4856 io->io_hdr.port_status); 4857 free(io->scsiio.kern_data_ptr, M_CTL); 4858 ctl_done(io); 4859 goto bailout; 4860 } 4861 4862 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4863 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4864 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4865 /* 4866 * XXX KDM just assuming a single pointer here, and not a 4867 * S/G list. If we start using S/G lists for config data, 4868 * we'll need to know how to clean them up here as well. 4869 */ 4870 free(io->scsiio.kern_data_ptr, M_CTL); 4871 /* Hopefully the user has already set the status... */ 4872 ctl_done(io); 4873 } else { 4874 /* 4875 * XXX KDM now we need to continue data movement. Some 4876 * options: 4877 * - call ctl_scsiio() again? We don't do this for data 4878 * writes, because for those at least we know ahead of 4879 * time where the write will go and how long it is. For 4880 * config writes, though, that information is largely 4881 * contained within the write itself, thus we need to 4882 * parse out the data again. 4883 * 4884 * - Call some other function once the data is in? 4885 */ 4886 4887 /* 4888 * XXX KDM call ctl_scsiio() again for now, and check flag 4889 * bits to see whether we're allocated or not. 4890 */ 4891 retval = ctl_scsiio(&io->scsiio); 4892 } 4893bailout: 4894 return (retval); 4895} 4896 4897/* 4898 * This gets called by a backend driver when it is done with a 4899 * data_submit method. 4900 */ 4901void 4902ctl_data_submit_done(union ctl_io *io) 4903{ 4904 /* 4905 * If the IO_CONT flag is set, we need to call the supplied 4906 * function to continue processing the I/O, instead of completing 4907 * the I/O just yet. 4908 * 4909 * If there is an error, though, we don't want to keep processing. 4910 * Instead, just send status back to the initiator. 4911 */ 4912 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) && 4913 (io->io_hdr.flags & CTL_FLAG_ABORT) == 0 && 4914 ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 4915 (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 4916 io->scsiio.io_cont(io); 4917 return; 4918 } 4919 ctl_done(io); 4920} 4921 4922/* 4923 * This gets called by a backend driver when it is done with a 4924 * configuration write. 4925 */ 4926void 4927ctl_config_write_done(union ctl_io *io) 4928{ 4929 /* 4930 * If the IO_CONT flag is set, we need to call the supplied 4931 * function to continue processing the I/O, instead of completing 4932 * the I/O just yet. 4933 * 4934 * If there is an error, though, we don't want to keep processing. 4935 * Instead, just send status back to the initiator. 4936 */ 4937 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 4938 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 4939 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 4940 io->scsiio.io_cont(io); 4941 return; 4942 } 4943 /* 4944 * Since a configuration write can be done for commands that actually 4945 * have data allocated, like write buffer, and commands that have 4946 * no data, like start/stop unit, we need to check here. 4947 */ 4948 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 4949 free(io->scsiio.kern_data_ptr, M_CTL); 4950 ctl_done(io); 4951} 4952 4953/* 4954 * SCSI release command. 4955 */ 4956int 4957ctl_scsi_release(struct ctl_scsiio *ctsio) 4958{ 4959 int length, longid, thirdparty_id, resv_id; 4960 struct ctl_softc *ctl_softc; 4961 struct ctl_lun *lun; 4962 4963 length = 0; 4964 resv_id = 0; 4965 4966 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 4967 4968 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 4969 ctl_softc = control_softc; 4970 4971 switch (ctsio->cdb[0]) { 4972 case RELEASE: { 4973 struct scsi_release *cdb; 4974 4975 cdb = (struct scsi_release *)ctsio->cdb; 4976 if ((cdb->byte2 & 0x1f) != 0) { 4977 ctl_set_invalid_field(ctsio, 4978 /*sks_valid*/ 1, 4979 /*command*/ 1, 4980 /*field*/ 1, 4981 /*bit_valid*/ 0, 4982 /*bit*/ 0); 4983 ctl_done((union ctl_io *)ctsio); 4984 return (CTL_RETVAL_COMPLETE); 4985 } 4986 break; 4987 } 4988 case RELEASE_10: { 4989 struct scsi_release_10 *cdb; 4990 4991 cdb = (struct scsi_release_10 *)ctsio->cdb; 4992 4993 if ((cdb->byte2 & SR10_EXTENT) != 0) { 4994 ctl_set_invalid_field(ctsio, 4995 /*sks_valid*/ 1, 4996 /*command*/ 1, 4997 /*field*/ 1, 4998 /*bit_valid*/ 1, 4999 /*bit*/ 0); 5000 ctl_done((union ctl_io *)ctsio); 5001 return (CTL_RETVAL_COMPLETE); 5002 5003 } 5004 5005 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5006 ctl_set_invalid_field(ctsio, 5007 /*sks_valid*/ 1, 5008 /*command*/ 1, 5009 /*field*/ 1, 5010 /*bit_valid*/ 1, 5011 /*bit*/ 4); 5012 ctl_done((union ctl_io *)ctsio); 5013 return (CTL_RETVAL_COMPLETE); 5014 } 5015 5016 if (cdb->byte2 & SR10_LONGID) 5017 longid = 1; 5018 else 5019 thirdparty_id = cdb->thirdparty_id; 5020 5021 resv_id = cdb->resv_id; 5022 length = scsi_2btoul(cdb->length); 5023 break; 5024 } 5025 } 5026 5027 5028 /* 5029 * XXX KDM right now, we only support LUN reservation. We don't 5030 * support 3rd party reservations, or extent reservations, which 5031 * might actually need the parameter list. If we've gotten this 5032 * far, we've got a LUN reservation. Anything else got kicked out 5033 * above. So, according to SPC, ignore the length. 5034 */ 5035 length = 0; 5036 5037 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5038 && (length > 0)) { 5039 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5040 ctsio->kern_data_len = length; 5041 ctsio->kern_total_len = length; 5042 ctsio->kern_data_resid = 0; 5043 ctsio->kern_rel_offset = 0; 5044 ctsio->kern_sg_entries = 0; 5045 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5046 ctsio->be_move_done = ctl_config_move_done; 5047 ctl_datamove((union ctl_io *)ctsio); 5048 5049 return (CTL_RETVAL_COMPLETE); 5050 } 5051 5052 if (length > 0) 5053 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5054 5055 mtx_lock(&lun->lun_lock); 5056 5057 /* 5058 * According to SPC, it is not an error for an intiator to attempt 5059 * to release a reservation on a LUN that isn't reserved, or that 5060 * is reserved by another initiator. The reservation can only be 5061 * released, though, by the initiator who made it or by one of 5062 * several reset type events. 5063 */ 5064 if (lun->flags & CTL_LUN_RESERVED) { 5065 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5066 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5067 && (ctsio->io_hdr.nexus.targ_target.id == 5068 lun->rsv_nexus.targ_target.id)) { 5069 lun->flags &= ~CTL_LUN_RESERVED; 5070 } 5071 } 5072 5073 mtx_unlock(&lun->lun_lock); 5074 5075 ctsio->scsi_status = SCSI_STATUS_OK; 5076 ctsio->io_hdr.status = CTL_SUCCESS; 5077 5078 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5079 free(ctsio->kern_data_ptr, M_CTL); 5080 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5081 } 5082 5083 ctl_done((union ctl_io *)ctsio); 5084 return (CTL_RETVAL_COMPLETE); 5085} 5086 5087int 5088ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5089{ 5090 int extent, thirdparty, longid; 5091 int resv_id, length; 5092 uint64_t thirdparty_id; 5093 struct ctl_softc *ctl_softc; 5094 struct ctl_lun *lun; 5095 5096 extent = 0; 5097 thirdparty = 0; 5098 longid = 0; 5099 resv_id = 0; 5100 length = 0; 5101 thirdparty_id = 0; 5102 5103 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5104 5105 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5106 ctl_softc = control_softc; 5107 5108 switch (ctsio->cdb[0]) { 5109 case RESERVE: { 5110 struct scsi_reserve *cdb; 5111 5112 cdb = (struct scsi_reserve *)ctsio->cdb; 5113 if ((cdb->byte2 & 0x1f) != 0) { 5114 ctl_set_invalid_field(ctsio, 5115 /*sks_valid*/ 1, 5116 /*command*/ 1, 5117 /*field*/ 1, 5118 /*bit_valid*/ 0, 5119 /*bit*/ 0); 5120 ctl_done((union ctl_io *)ctsio); 5121 return (CTL_RETVAL_COMPLETE); 5122 } 5123 resv_id = cdb->resv_id; 5124 length = scsi_2btoul(cdb->length); 5125 break; 5126 } 5127 case RESERVE_10: { 5128 struct scsi_reserve_10 *cdb; 5129 5130 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5131 5132 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5133 ctl_set_invalid_field(ctsio, 5134 /*sks_valid*/ 1, 5135 /*command*/ 1, 5136 /*field*/ 1, 5137 /*bit_valid*/ 1, 5138 /*bit*/ 0); 5139 ctl_done((union ctl_io *)ctsio); 5140 return (CTL_RETVAL_COMPLETE); 5141 } 5142 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5143 ctl_set_invalid_field(ctsio, 5144 /*sks_valid*/ 1, 5145 /*command*/ 1, 5146 /*field*/ 1, 5147 /*bit_valid*/ 1, 5148 /*bit*/ 4); 5149 ctl_done((union ctl_io *)ctsio); 5150 return (CTL_RETVAL_COMPLETE); 5151 } 5152 if (cdb->byte2 & SR10_LONGID) 5153 longid = 1; 5154 else 5155 thirdparty_id = cdb->thirdparty_id; 5156 5157 resv_id = cdb->resv_id; 5158 length = scsi_2btoul(cdb->length); 5159 break; 5160 } 5161 } 5162 5163 /* 5164 * XXX KDM right now, we only support LUN reservation. We don't 5165 * support 3rd party reservations, or extent reservations, which 5166 * might actually need the parameter list. If we've gotten this 5167 * far, we've got a LUN reservation. Anything else got kicked out 5168 * above. So, according to SPC, ignore the length. 5169 */ 5170 length = 0; 5171 5172 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5173 && (length > 0)) { 5174 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5175 ctsio->kern_data_len = length; 5176 ctsio->kern_total_len = length; 5177 ctsio->kern_data_resid = 0; 5178 ctsio->kern_rel_offset = 0; 5179 ctsio->kern_sg_entries = 0; 5180 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5181 ctsio->be_move_done = ctl_config_move_done; 5182 ctl_datamove((union ctl_io *)ctsio); 5183 5184 return (CTL_RETVAL_COMPLETE); 5185 } 5186 5187 if (length > 0) 5188 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5189 5190 mtx_lock(&lun->lun_lock); 5191 if (lun->flags & CTL_LUN_RESERVED) { 5192 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5193 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5194 || (ctsio->io_hdr.nexus.targ_target.id != 5195 lun->rsv_nexus.targ_target.id)) { 5196 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5197 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5198 goto bailout; 5199 } 5200 } 5201 5202 lun->flags |= CTL_LUN_RESERVED; 5203 lun->rsv_nexus = ctsio->io_hdr.nexus; 5204 5205 ctsio->scsi_status = SCSI_STATUS_OK; 5206 ctsio->io_hdr.status = CTL_SUCCESS; 5207 5208bailout: 5209 mtx_unlock(&lun->lun_lock); 5210 5211 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5212 free(ctsio->kern_data_ptr, M_CTL); 5213 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5214 } 5215 5216 ctl_done((union ctl_io *)ctsio); 5217 return (CTL_RETVAL_COMPLETE); 5218} 5219 5220int 5221ctl_start_stop(struct ctl_scsiio *ctsio) 5222{ 5223 struct scsi_start_stop_unit *cdb; 5224 struct ctl_lun *lun; 5225 struct ctl_softc *ctl_softc; 5226 int retval; 5227 5228 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5229 5230 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5231 ctl_softc = control_softc; 5232 retval = 0; 5233 5234 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5235 5236 /* 5237 * XXX KDM 5238 * We don't support the immediate bit on a stop unit. In order to 5239 * do that, we would need to code up a way to know that a stop is 5240 * pending, and hold off any new commands until it completes, one 5241 * way or another. Then we could accept or reject those commands 5242 * depending on its status. We would almost need to do the reverse 5243 * of what we do below for an immediate start -- return the copy of 5244 * the ctl_io to the FETD with status to send to the host (and to 5245 * free the copy!) and then free the original I/O once the stop 5246 * actually completes. That way, the OOA queue mechanism can work 5247 * to block commands that shouldn't proceed. Another alternative 5248 * would be to put the copy in the queue in place of the original, 5249 * and return the original back to the caller. That could be 5250 * slightly safer.. 5251 */ 5252 if ((cdb->byte2 & SSS_IMMED) 5253 && ((cdb->how & SSS_START) == 0)) { 5254 ctl_set_invalid_field(ctsio, 5255 /*sks_valid*/ 1, 5256 /*command*/ 1, 5257 /*field*/ 1, 5258 /*bit_valid*/ 1, 5259 /*bit*/ 0); 5260 ctl_done((union ctl_io *)ctsio); 5261 return (CTL_RETVAL_COMPLETE); 5262 } 5263 5264 /* 5265 * We don't support the power conditions field. We need to check 5266 * this prior to checking the load/eject and start/stop bits. 5267 */ 5268 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5269 ctl_set_invalid_field(ctsio, 5270 /*sks_valid*/ 1, 5271 /*command*/ 1, 5272 /*field*/ 4, 5273 /*bit_valid*/ 1, 5274 /*bit*/ 4); 5275 ctl_done((union ctl_io *)ctsio); 5276 return (CTL_RETVAL_COMPLETE); 5277 } 5278 5279 /* 5280 * Media isn't removable, so we can't load or eject it. 5281 */ 5282 if ((cdb->how & SSS_LOEJ) != 0) { 5283 ctl_set_invalid_field(ctsio, 5284 /*sks_valid*/ 1, 5285 /*command*/ 1, 5286 /*field*/ 4, 5287 /*bit_valid*/ 1, 5288 /*bit*/ 1); 5289 ctl_done((union ctl_io *)ctsio); 5290 return (CTL_RETVAL_COMPLETE); 5291 } 5292 5293 if ((lun->flags & CTL_LUN_PR_RESERVED) 5294 && ((cdb->how & SSS_START)==0)) { 5295 uint32_t residx; 5296 5297 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5298 if (!lun->per_res[residx].registered 5299 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5300 5301 ctl_set_reservation_conflict(ctsio); 5302 ctl_done((union ctl_io *)ctsio); 5303 return (CTL_RETVAL_COMPLETE); 5304 } 5305 } 5306 5307 /* 5308 * If there is no backend on this device, we can't start or stop 5309 * it. In theory we shouldn't get any start/stop commands in the 5310 * first place at this level if the LUN doesn't have a backend. 5311 * That should get stopped by the command decode code. 5312 */ 5313 if (lun->backend == NULL) { 5314 ctl_set_invalid_opcode(ctsio); 5315 ctl_done((union ctl_io *)ctsio); 5316 return (CTL_RETVAL_COMPLETE); 5317 } 5318 5319 /* 5320 * XXX KDM Copan-specific offline behavior. 5321 * Figure out a reasonable way to port this? 5322 */ 5323#ifdef NEEDTOPORT 5324 mtx_lock(&lun->lun_lock); 5325 5326 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5327 && (lun->flags & CTL_LUN_OFFLINE)) { 5328 /* 5329 * If the LUN is offline, and the on/offline bit isn't set, 5330 * reject the start or stop. Otherwise, let it through. 5331 */ 5332 mtx_unlock(&lun->lun_lock); 5333 ctl_set_lun_not_ready(ctsio); 5334 ctl_done((union ctl_io *)ctsio); 5335 } else { 5336 mtx_unlock(&lun->lun_lock); 5337#endif /* NEEDTOPORT */ 5338 /* 5339 * This could be a start or a stop when we're online, 5340 * or a stop/offline or start/online. A start or stop when 5341 * we're offline is covered in the case above. 5342 */ 5343 /* 5344 * In the non-immediate case, we send the request to 5345 * the backend and return status to the user when 5346 * it is done. 5347 * 5348 * In the immediate case, we allocate a new ctl_io 5349 * to hold a copy of the request, and send that to 5350 * the backend. We then set good status on the 5351 * user's request and return it immediately. 5352 */ 5353 if (cdb->byte2 & SSS_IMMED) { 5354 union ctl_io *new_io; 5355 5356 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5357 if (new_io == NULL) { 5358 ctl_set_busy(ctsio); 5359 ctl_done((union ctl_io *)ctsio); 5360 } else { 5361 ctl_copy_io((union ctl_io *)ctsio, 5362 new_io); 5363 retval = lun->backend->config_write(new_io); 5364 ctl_set_success(ctsio); 5365 ctl_done((union ctl_io *)ctsio); 5366 } 5367 } else { 5368 retval = lun->backend->config_write( 5369 (union ctl_io *)ctsio); 5370 } 5371#ifdef NEEDTOPORT 5372 } 5373#endif 5374 return (retval); 5375} 5376 5377/* 5378 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5379 * we don't really do anything with the LBA and length fields if the user 5380 * passes them in. Instead we'll just flush out the cache for the entire 5381 * LUN. 5382 */ 5383int 5384ctl_sync_cache(struct ctl_scsiio *ctsio) 5385{ 5386 struct ctl_lun *lun; 5387 struct ctl_softc *ctl_softc; 5388 uint64_t starting_lba; 5389 uint32_t block_count; 5390 int reladr, immed; 5391 int retval; 5392 5393 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5394 5395 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5396 ctl_softc = control_softc; 5397 retval = 0; 5398 reladr = 0; 5399 immed = 0; 5400 5401 switch (ctsio->cdb[0]) { 5402 case SYNCHRONIZE_CACHE: { 5403 struct scsi_sync_cache *cdb; 5404 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5405 5406 if (cdb->byte2 & SSC_RELADR) 5407 reladr = 1; 5408 5409 if (cdb->byte2 & SSC_IMMED) 5410 immed = 1; 5411 5412 starting_lba = scsi_4btoul(cdb->begin_lba); 5413 block_count = scsi_2btoul(cdb->lb_count); 5414 break; 5415 } 5416 case SYNCHRONIZE_CACHE_16: { 5417 struct scsi_sync_cache_16 *cdb; 5418 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5419 5420 if (cdb->byte2 & SSC_RELADR) 5421 reladr = 1; 5422 5423 if (cdb->byte2 & SSC_IMMED) 5424 immed = 1; 5425 5426 starting_lba = scsi_8btou64(cdb->begin_lba); 5427 block_count = scsi_4btoul(cdb->lb_count); 5428 break; 5429 } 5430 default: 5431 ctl_set_invalid_opcode(ctsio); 5432 ctl_done((union ctl_io *)ctsio); 5433 goto bailout; 5434 break; /* NOTREACHED */ 5435 } 5436 5437 if (immed) { 5438 /* 5439 * We don't support the immediate bit. Since it's in the 5440 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5441 * commands, we can just return the same error in either 5442 * case. 5443 */ 5444 ctl_set_invalid_field(ctsio, 5445 /*sks_valid*/ 1, 5446 /*command*/ 1, 5447 /*field*/ 1, 5448 /*bit_valid*/ 1, 5449 /*bit*/ 1); 5450 ctl_done((union ctl_io *)ctsio); 5451 goto bailout; 5452 } 5453 5454 if (reladr) { 5455 /* 5456 * We don't support the reladr bit either. It can only be 5457 * used with linked commands, and we don't support linked 5458 * commands. Since the bit is in the same place for the 5459 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5460 * just return the same error in either case. 5461 */ 5462 ctl_set_invalid_field(ctsio, 5463 /*sks_valid*/ 1, 5464 /*command*/ 1, 5465 /*field*/ 1, 5466 /*bit_valid*/ 1, 5467 /*bit*/ 0); 5468 ctl_done((union ctl_io *)ctsio); 5469 goto bailout; 5470 } 5471 5472 /* 5473 * We check the LBA and length, but don't do anything with them. 5474 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5475 * get flushed. This check will just help satisfy anyone who wants 5476 * to see an error for an out of range LBA. 5477 */ 5478 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5479 ctl_set_lba_out_of_range(ctsio); 5480 ctl_done((union ctl_io *)ctsio); 5481 goto bailout; 5482 } 5483 5484 /* 5485 * If this LUN has no backend, we can't flush the cache anyway. 5486 */ 5487 if (lun->backend == NULL) { 5488 ctl_set_invalid_opcode(ctsio); 5489 ctl_done((union ctl_io *)ctsio); 5490 goto bailout; 5491 } 5492 5493 /* 5494 * Check to see whether we're configured to send the SYNCHRONIZE 5495 * CACHE command directly to the back end. 5496 */ 5497 mtx_lock(&lun->lun_lock); 5498 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5499 && (++(lun->sync_count) >= lun->sync_interval)) { 5500 lun->sync_count = 0; 5501 mtx_unlock(&lun->lun_lock); 5502 retval = lun->backend->config_write((union ctl_io *)ctsio); 5503 } else { 5504 mtx_unlock(&lun->lun_lock); 5505 ctl_set_success(ctsio); 5506 ctl_done((union ctl_io *)ctsio); 5507 } 5508 5509bailout: 5510 5511 return (retval); 5512} 5513 5514int 5515ctl_format(struct ctl_scsiio *ctsio) 5516{ 5517 struct scsi_format *cdb; 5518 struct ctl_lun *lun; 5519 struct ctl_softc *ctl_softc; 5520 int length, defect_list_len; 5521 5522 CTL_DEBUG_PRINT(("ctl_format\n")); 5523 5524 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5525 ctl_softc = control_softc; 5526 5527 cdb = (struct scsi_format *)ctsio->cdb; 5528 5529 length = 0; 5530 if (cdb->byte2 & SF_FMTDATA) { 5531 if (cdb->byte2 & SF_LONGLIST) 5532 length = sizeof(struct scsi_format_header_long); 5533 else 5534 length = sizeof(struct scsi_format_header_short); 5535 } 5536 5537 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5538 && (length > 0)) { 5539 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5540 ctsio->kern_data_len = length; 5541 ctsio->kern_total_len = length; 5542 ctsio->kern_data_resid = 0; 5543 ctsio->kern_rel_offset = 0; 5544 ctsio->kern_sg_entries = 0; 5545 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5546 ctsio->be_move_done = ctl_config_move_done; 5547 ctl_datamove((union ctl_io *)ctsio); 5548 5549 return (CTL_RETVAL_COMPLETE); 5550 } 5551 5552 defect_list_len = 0; 5553 5554 if (cdb->byte2 & SF_FMTDATA) { 5555 if (cdb->byte2 & SF_LONGLIST) { 5556 struct scsi_format_header_long *header; 5557 5558 header = (struct scsi_format_header_long *) 5559 ctsio->kern_data_ptr; 5560 5561 defect_list_len = scsi_4btoul(header->defect_list_len); 5562 if (defect_list_len != 0) { 5563 ctl_set_invalid_field(ctsio, 5564 /*sks_valid*/ 1, 5565 /*command*/ 0, 5566 /*field*/ 2, 5567 /*bit_valid*/ 0, 5568 /*bit*/ 0); 5569 goto bailout; 5570 } 5571 } else { 5572 struct scsi_format_header_short *header; 5573 5574 header = (struct scsi_format_header_short *) 5575 ctsio->kern_data_ptr; 5576 5577 defect_list_len = scsi_2btoul(header->defect_list_len); 5578 if (defect_list_len != 0) { 5579 ctl_set_invalid_field(ctsio, 5580 /*sks_valid*/ 1, 5581 /*command*/ 0, 5582 /*field*/ 2, 5583 /*bit_valid*/ 0, 5584 /*bit*/ 0); 5585 goto bailout; 5586 } 5587 } 5588 } 5589 5590 /* 5591 * The format command will clear out the "Medium format corrupted" 5592 * status if set by the configuration code. That status is really 5593 * just a way to notify the host that we have lost the media, and 5594 * get them to issue a command that will basically make them think 5595 * they're blowing away the media. 5596 */ 5597 mtx_lock(&lun->lun_lock); 5598 lun->flags &= ~CTL_LUN_INOPERABLE; 5599 mtx_unlock(&lun->lun_lock); 5600 5601 ctsio->scsi_status = SCSI_STATUS_OK; 5602 ctsio->io_hdr.status = CTL_SUCCESS; 5603bailout: 5604 5605 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5606 free(ctsio->kern_data_ptr, M_CTL); 5607 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5608 } 5609 5610 ctl_done((union ctl_io *)ctsio); 5611 return (CTL_RETVAL_COMPLETE); 5612} 5613 5614int 5615ctl_write_buffer(struct ctl_scsiio *ctsio) 5616{ 5617 struct scsi_write_buffer *cdb; 5618 struct copan_page_header *header; 5619 struct ctl_lun *lun; 5620 struct ctl_softc *ctl_softc; 5621 int buffer_offset, len; 5622 int retval; 5623 5624 header = NULL; 5625 5626 retval = CTL_RETVAL_COMPLETE; 5627 5628 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5629 5630 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5631 ctl_softc = control_softc; 5632 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5633 5634 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5635 ctl_set_invalid_field(ctsio, 5636 /*sks_valid*/ 1, 5637 /*command*/ 1, 5638 /*field*/ 1, 5639 /*bit_valid*/ 1, 5640 /*bit*/ 4); 5641 ctl_done((union ctl_io *)ctsio); 5642 return (CTL_RETVAL_COMPLETE); 5643 } 5644 if (cdb->buffer_id != 0) { 5645 ctl_set_invalid_field(ctsio, 5646 /*sks_valid*/ 1, 5647 /*command*/ 1, 5648 /*field*/ 2, 5649 /*bit_valid*/ 0, 5650 /*bit*/ 0); 5651 ctl_done((union ctl_io *)ctsio); 5652 return (CTL_RETVAL_COMPLETE); 5653 } 5654 5655 len = scsi_3btoul(cdb->length); 5656 buffer_offset = scsi_3btoul(cdb->offset); 5657 5658 if (len > sizeof(lun->write_buffer)) { 5659 ctl_set_invalid_field(ctsio, 5660 /*sks_valid*/ 1, 5661 /*command*/ 1, 5662 /*field*/ 6, 5663 /*bit_valid*/ 0, 5664 /*bit*/ 0); 5665 ctl_done((union ctl_io *)ctsio); 5666 return (CTL_RETVAL_COMPLETE); 5667 } 5668 5669 if (buffer_offset != 0) { 5670 ctl_set_invalid_field(ctsio, 5671 /*sks_valid*/ 1, 5672 /*command*/ 1, 5673 /*field*/ 3, 5674 /*bit_valid*/ 0, 5675 /*bit*/ 0); 5676 ctl_done((union ctl_io *)ctsio); 5677 return (CTL_RETVAL_COMPLETE); 5678 } 5679 5680 /* 5681 * If we've got a kernel request that hasn't been malloced yet, 5682 * malloc it and tell the caller the data buffer is here. 5683 */ 5684 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5685 ctsio->kern_data_ptr = lun->write_buffer; 5686 ctsio->kern_data_len = len; 5687 ctsio->kern_total_len = len; 5688 ctsio->kern_data_resid = 0; 5689 ctsio->kern_rel_offset = 0; 5690 ctsio->kern_sg_entries = 0; 5691 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5692 ctsio->be_move_done = ctl_config_move_done; 5693 ctl_datamove((union ctl_io *)ctsio); 5694 5695 return (CTL_RETVAL_COMPLETE); 5696 } 5697 5698 ctl_done((union ctl_io *)ctsio); 5699 5700 return (CTL_RETVAL_COMPLETE); 5701} 5702 5703int 5704ctl_write_same(struct ctl_scsiio *ctsio) 5705{ 5706 struct ctl_lun *lun; 5707 struct ctl_lba_len_flags *lbalen; 5708 uint64_t lba; 5709 uint32_t num_blocks; 5710 int len, retval; 5711 uint8_t byte2; 5712 5713 retval = CTL_RETVAL_COMPLETE; 5714 5715 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5716 5717 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5718 5719 switch (ctsio->cdb[0]) { 5720 case WRITE_SAME_10: { 5721 struct scsi_write_same_10 *cdb; 5722 5723 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5724 5725 lba = scsi_4btoul(cdb->addr); 5726 num_blocks = scsi_2btoul(cdb->length); 5727 byte2 = cdb->byte2; 5728 break; 5729 } 5730 case WRITE_SAME_16: { 5731 struct scsi_write_same_16 *cdb; 5732 5733 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5734 5735 lba = scsi_8btou64(cdb->addr); 5736 num_blocks = scsi_4btoul(cdb->length); 5737 byte2 = cdb->byte2; 5738 break; 5739 } 5740 default: 5741 /* 5742 * We got a command we don't support. This shouldn't 5743 * happen, commands should be filtered out above us. 5744 */ 5745 ctl_set_invalid_opcode(ctsio); 5746 ctl_done((union ctl_io *)ctsio); 5747 5748 return (CTL_RETVAL_COMPLETE); 5749 break; /* NOTREACHED */ 5750 } 5751 5752 /* 5753 * The first check is to make sure we're in bounds, the second 5754 * check is to catch wrap-around problems. If the lba + num blocks 5755 * is less than the lba, then we've wrapped around and the block 5756 * range is invalid anyway. 5757 */ 5758 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5759 || ((lba + num_blocks) < lba)) { 5760 ctl_set_lba_out_of_range(ctsio); 5761 ctl_done((union ctl_io *)ctsio); 5762 return (CTL_RETVAL_COMPLETE); 5763 } 5764 5765 /* Zero number of blocks means "to the last logical block" */ 5766 if (num_blocks == 0) { 5767 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5768 ctl_set_invalid_field(ctsio, 5769 /*sks_valid*/ 0, 5770 /*command*/ 1, 5771 /*field*/ 0, 5772 /*bit_valid*/ 0, 5773 /*bit*/ 0); 5774 ctl_done((union ctl_io *)ctsio); 5775 return (CTL_RETVAL_COMPLETE); 5776 } 5777 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5778 } 5779 5780 len = lun->be_lun->blocksize; 5781 5782 /* 5783 * If we've got a kernel request that hasn't been malloced yet, 5784 * malloc it and tell the caller the data buffer is here. 5785 */ 5786 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5787 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5788 ctsio->kern_data_len = len; 5789 ctsio->kern_total_len = len; 5790 ctsio->kern_data_resid = 0; 5791 ctsio->kern_rel_offset = 0; 5792 ctsio->kern_sg_entries = 0; 5793 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5794 ctsio->be_move_done = ctl_config_move_done; 5795 ctl_datamove((union ctl_io *)ctsio); 5796 5797 return (CTL_RETVAL_COMPLETE); 5798 } 5799 5800 lbalen = (struct ctl_lba_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5801 lbalen->lba = lba; 5802 lbalen->len = num_blocks; 5803 lbalen->flags = byte2; 5804 retval = lun->backend->config_write((union ctl_io *)ctsio); 5805 5806 return (retval); 5807} 5808 5809int 5810ctl_unmap(struct ctl_scsiio *ctsio) 5811{ 5812 struct ctl_lun *lun; 5813 struct scsi_unmap *cdb; 5814 struct ctl_ptr_len_flags *ptrlen; 5815 struct scsi_unmap_header *hdr; 5816 struct scsi_unmap_desc *buf, *end; 5817 uint64_t lba; 5818 uint32_t num_blocks; 5819 int len, retval; 5820 uint8_t byte2; 5821 5822 retval = CTL_RETVAL_COMPLETE; 5823 5824 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5825 5826 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5827 cdb = (struct scsi_unmap *)ctsio->cdb; 5828 5829 len = scsi_2btoul(cdb->length); 5830 byte2 = cdb->byte2; 5831 5832 /* 5833 * If we've got a kernel request that hasn't been malloced yet, 5834 * malloc it and tell the caller the data buffer is here. 5835 */ 5836 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5837 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5838 ctsio->kern_data_len = len; 5839 ctsio->kern_total_len = len; 5840 ctsio->kern_data_resid = 0; 5841 ctsio->kern_rel_offset = 0; 5842 ctsio->kern_sg_entries = 0; 5843 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5844 ctsio->be_move_done = ctl_config_move_done; 5845 ctl_datamove((union ctl_io *)ctsio); 5846 5847 return (CTL_RETVAL_COMPLETE); 5848 } 5849 5850 len = ctsio->kern_total_len - ctsio->kern_data_resid; 5851 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 5852 if (len < sizeof (*hdr) || 5853 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 5854 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 5855 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 5856 ctl_set_invalid_field(ctsio, 5857 /*sks_valid*/ 0, 5858 /*command*/ 0, 5859 /*field*/ 0, 5860 /*bit_valid*/ 0, 5861 /*bit*/ 0); 5862 ctl_done((union ctl_io *)ctsio); 5863 return (CTL_RETVAL_COMPLETE); 5864 } 5865 len = scsi_2btoul(hdr->desc_length); 5866 buf = (struct scsi_unmap_desc *)(hdr + 1); 5867 end = buf + len / sizeof(*buf); 5868 5869 ptrlen = (struct ctl_ptr_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5870 ptrlen->ptr = (void *)buf; 5871 ptrlen->len = len; 5872 ptrlen->flags = byte2; 5873 5874 for (; buf < end; buf++) { 5875 lba = scsi_8btou64(buf->lba); 5876 num_blocks = scsi_4btoul(buf->length); 5877 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5878 || ((lba + num_blocks) < lba)) { 5879 ctl_set_lba_out_of_range(ctsio); 5880 ctl_done((union ctl_io *)ctsio); 5881 return (CTL_RETVAL_COMPLETE); 5882 } 5883 } 5884 5885 retval = lun->backend->config_write((union ctl_io *)ctsio); 5886 5887 return (retval); 5888} 5889 5890/* 5891 * Note that this function currently doesn't actually do anything inside 5892 * CTL to enforce things if the DQue bit is turned on. 5893 * 5894 * Also note that this function can't be used in the default case, because 5895 * the DQue bit isn't set in the changeable mask for the control mode page 5896 * anyway. This is just here as an example for how to implement a page 5897 * handler, and a placeholder in case we want to allow the user to turn 5898 * tagged queueing on and off. 5899 * 5900 * The D_SENSE bit handling is functional, however, and will turn 5901 * descriptor sense on and off for a given LUN. 5902 */ 5903int 5904ctl_control_page_handler(struct ctl_scsiio *ctsio, 5905 struct ctl_page_index *page_index, uint8_t *page_ptr) 5906{ 5907 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5908 struct ctl_lun *lun; 5909 struct ctl_softc *softc; 5910 int set_ua; 5911 uint32_t initidx; 5912 5913 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5914 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5915 set_ua = 0; 5916 5917 user_cp = (struct scsi_control_page *)page_ptr; 5918 current_cp = (struct scsi_control_page *) 5919 (page_index->page_data + (page_index->page_len * 5920 CTL_PAGE_CURRENT)); 5921 saved_cp = (struct scsi_control_page *) 5922 (page_index->page_data + (page_index->page_len * 5923 CTL_PAGE_SAVED)); 5924 5925 softc = control_softc; 5926 5927 mtx_lock(&lun->lun_lock); 5928 if (((current_cp->rlec & SCP_DSENSE) == 0) 5929 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 5930 /* 5931 * Descriptor sense is currently turned off and the user 5932 * wants to turn it on. 5933 */ 5934 current_cp->rlec |= SCP_DSENSE; 5935 saved_cp->rlec |= SCP_DSENSE; 5936 lun->flags |= CTL_LUN_SENSE_DESC; 5937 set_ua = 1; 5938 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 5939 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 5940 /* 5941 * Descriptor sense is currently turned on, and the user 5942 * wants to turn it off. 5943 */ 5944 current_cp->rlec &= ~SCP_DSENSE; 5945 saved_cp->rlec &= ~SCP_DSENSE; 5946 lun->flags &= ~CTL_LUN_SENSE_DESC; 5947 set_ua = 1; 5948 } 5949 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 5950 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5951#ifdef NEEDTOPORT 5952 csevent_log(CSC_CTL | CSC_SHELF_SW | 5953 CTL_UNTAG_TO_UNTAG, 5954 csevent_LogType_Trace, 5955 csevent_Severity_Information, 5956 csevent_AlertLevel_Green, 5957 csevent_FRU_Firmware, 5958 csevent_FRU_Unknown, 5959 "Received untagged to untagged transition"); 5960#endif /* NEEDTOPORT */ 5961 } else { 5962#ifdef NEEDTOPORT 5963 csevent_log(CSC_CTL | CSC_SHELF_SW | 5964 CTL_UNTAG_TO_TAG, 5965 csevent_LogType_ConfigChange, 5966 csevent_Severity_Information, 5967 csevent_AlertLevel_Green, 5968 csevent_FRU_Firmware, 5969 csevent_FRU_Unknown, 5970 "Received untagged to tagged " 5971 "queueing transition"); 5972#endif /* NEEDTOPORT */ 5973 5974 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5975 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 5976 set_ua = 1; 5977 } 5978 } else { 5979 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 5980#ifdef NEEDTOPORT 5981 csevent_log(CSC_CTL | CSC_SHELF_SW | 5982 CTL_TAG_TO_UNTAG, 5983 csevent_LogType_ConfigChange, 5984 csevent_Severity_Warning, 5985 csevent_AlertLevel_Yellow, 5986 csevent_FRU_Firmware, 5987 csevent_FRU_Unknown, 5988 "Received tagged queueing to untagged " 5989 "transition"); 5990#endif /* NEEDTOPORT */ 5991 5992 current_cp->queue_flags |= SCP_QUEUE_DQUE; 5993 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 5994 set_ua = 1; 5995 } else { 5996#ifdef NEEDTOPORT 5997 csevent_log(CSC_CTL | CSC_SHELF_SW | 5998 CTL_TAG_TO_TAG, 5999 csevent_LogType_Trace, 6000 csevent_Severity_Information, 6001 csevent_AlertLevel_Green, 6002 csevent_FRU_Firmware, 6003 csevent_FRU_Unknown, 6004 "Received tagged queueing to tagged " 6005 "queueing transition"); 6006#endif /* NEEDTOPORT */ 6007 } 6008 } 6009 if (set_ua != 0) { 6010 int i; 6011 /* 6012 * Let other initiators know that the mode 6013 * parameters for this LUN have changed. 6014 */ 6015 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6016 if (i == initidx) 6017 continue; 6018 6019 lun->pending_sense[i].ua_pending |= 6020 CTL_UA_MODE_CHANGE; 6021 } 6022 } 6023 mtx_unlock(&lun->lun_lock); 6024 6025 return (0); 6026} 6027 6028int 6029ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6030 struct ctl_page_index *page_index, uint8_t *page_ptr) 6031{ 6032 return (0); 6033} 6034 6035int 6036ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6037 struct ctl_page_index *page_index, int pc) 6038{ 6039 struct copan_power_subpage *page; 6040 6041 page = (struct copan_power_subpage *)page_index->page_data + 6042 (page_index->page_len * pc); 6043 6044 switch (pc) { 6045 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6046 /* 6047 * We don't update the changable bits for this page. 6048 */ 6049 break; 6050 case SMS_PAGE_CTRL_CURRENT >> 6: 6051 case SMS_PAGE_CTRL_DEFAULT >> 6: 6052 case SMS_PAGE_CTRL_SAVED >> 6: 6053#ifdef NEEDTOPORT 6054 ctl_update_power_subpage(page); 6055#endif 6056 break; 6057 default: 6058#ifdef NEEDTOPORT 6059 EPRINT(0, "Invalid PC %d!!", pc); 6060#endif 6061 break; 6062 } 6063 return (0); 6064} 6065 6066 6067int 6068ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6069 struct ctl_page_index *page_index, uint8_t *page_ptr) 6070{ 6071 struct copan_aps_subpage *user_sp; 6072 struct copan_aps_subpage *current_sp; 6073 union ctl_modepage_info *modepage_info; 6074 struct ctl_softc *softc; 6075 struct ctl_lun *lun; 6076 int retval; 6077 6078 retval = CTL_RETVAL_COMPLETE; 6079 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6080 (page_index->page_len * CTL_PAGE_CURRENT)); 6081 softc = control_softc; 6082 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6083 6084 user_sp = (struct copan_aps_subpage *)page_ptr; 6085 6086 modepage_info = (union ctl_modepage_info *) 6087 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6088 6089 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6090 modepage_info->header.subpage = page_index->subpage; 6091 modepage_info->aps.lock_active = user_sp->lock_active; 6092 6093 mtx_lock(&softc->ctl_lock); 6094 6095 /* 6096 * If there is a request to lock the LUN and another LUN is locked 6097 * this is an error. If the requested LUN is already locked ignore 6098 * the request. If no LUN is locked attempt to lock it. 6099 * if there is a request to unlock the LUN and the LUN is currently 6100 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6101 * if another LUN is locked or no LUN is locked. 6102 */ 6103 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6104 if (softc->aps_locked_lun == lun->lun) { 6105 /* 6106 * This LUN is already locked, so we're done. 6107 */ 6108 retval = CTL_RETVAL_COMPLETE; 6109 } else if (softc->aps_locked_lun == 0) { 6110 /* 6111 * No one has the lock, pass the request to the 6112 * backend. 6113 */ 6114 retval = lun->backend->config_write( 6115 (union ctl_io *)ctsio); 6116 } else { 6117 /* 6118 * Someone else has the lock, throw out the request. 6119 */ 6120 ctl_set_already_locked(ctsio); 6121 free(ctsio->kern_data_ptr, M_CTL); 6122 ctl_done((union ctl_io *)ctsio); 6123 6124 /* 6125 * Set the return value so that ctl_do_mode_select() 6126 * won't try to complete the command. We already 6127 * completed it here. 6128 */ 6129 retval = CTL_RETVAL_ERROR; 6130 } 6131 } else if (softc->aps_locked_lun == lun->lun) { 6132 /* 6133 * This LUN is locked, so pass the unlock request to the 6134 * backend. 6135 */ 6136 retval = lun->backend->config_write((union ctl_io *)ctsio); 6137 } 6138 mtx_unlock(&softc->ctl_lock); 6139 6140 return (retval); 6141} 6142 6143int 6144ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6145 struct ctl_page_index *page_index, 6146 uint8_t *page_ptr) 6147{ 6148 uint8_t *c; 6149 int i; 6150 6151 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6152 ctl_time_io_secs = 6153 (c[0] << 8) | 6154 (c[1] << 0) | 6155 0; 6156 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6157 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6158 printf("page data:"); 6159 for (i=0; i<8; i++) 6160 printf(" %.2x",page_ptr[i]); 6161 printf("\n"); 6162 return (0); 6163} 6164 6165int 6166ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6167 struct ctl_page_index *page_index, 6168 int pc) 6169{ 6170 struct copan_debugconf_subpage *page; 6171 6172 page = (struct copan_debugconf_subpage *)page_index->page_data + 6173 (page_index->page_len * pc); 6174 6175 switch (pc) { 6176 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6177 case SMS_PAGE_CTRL_DEFAULT >> 6: 6178 case SMS_PAGE_CTRL_SAVED >> 6: 6179 /* 6180 * We don't update the changable or default bits for this page. 6181 */ 6182 break; 6183 case SMS_PAGE_CTRL_CURRENT >> 6: 6184 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6185 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6186 break; 6187 default: 6188#ifdef NEEDTOPORT 6189 EPRINT(0, "Invalid PC %d!!", pc); 6190#endif /* NEEDTOPORT */ 6191 break; 6192 } 6193 return (0); 6194} 6195 6196 6197static int 6198ctl_do_mode_select(union ctl_io *io) 6199{ 6200 struct scsi_mode_page_header *page_header; 6201 struct ctl_page_index *page_index; 6202 struct ctl_scsiio *ctsio; 6203 int control_dev, page_len; 6204 int page_len_offset, page_len_size; 6205 union ctl_modepage_info *modepage_info; 6206 struct ctl_lun *lun; 6207 int *len_left, *len_used; 6208 int retval, i; 6209 6210 ctsio = &io->scsiio; 6211 page_index = NULL; 6212 page_len = 0; 6213 retval = CTL_RETVAL_COMPLETE; 6214 6215 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6216 6217 if (lun->be_lun->lun_type != T_DIRECT) 6218 control_dev = 1; 6219 else 6220 control_dev = 0; 6221 6222 modepage_info = (union ctl_modepage_info *) 6223 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6224 len_left = &modepage_info->header.len_left; 6225 len_used = &modepage_info->header.len_used; 6226 6227do_next_page: 6228 6229 page_header = (struct scsi_mode_page_header *) 6230 (ctsio->kern_data_ptr + *len_used); 6231 6232 if (*len_left == 0) { 6233 free(ctsio->kern_data_ptr, M_CTL); 6234 ctl_set_success(ctsio); 6235 ctl_done((union ctl_io *)ctsio); 6236 return (CTL_RETVAL_COMPLETE); 6237 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6238 6239 free(ctsio->kern_data_ptr, M_CTL); 6240 ctl_set_param_len_error(ctsio); 6241 ctl_done((union ctl_io *)ctsio); 6242 return (CTL_RETVAL_COMPLETE); 6243 6244 } else if ((page_header->page_code & SMPH_SPF) 6245 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6246 6247 free(ctsio->kern_data_ptr, M_CTL); 6248 ctl_set_param_len_error(ctsio); 6249 ctl_done((union ctl_io *)ctsio); 6250 return (CTL_RETVAL_COMPLETE); 6251 } 6252 6253 6254 /* 6255 * XXX KDM should we do something with the block descriptor? 6256 */ 6257 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6258 6259 if ((control_dev != 0) 6260 && (lun->mode_pages.index[i].page_flags & 6261 CTL_PAGE_FLAG_DISK_ONLY)) 6262 continue; 6263 6264 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6265 (page_header->page_code & SMPH_PC_MASK)) 6266 continue; 6267 6268 /* 6269 * If neither page has a subpage code, then we've got a 6270 * match. 6271 */ 6272 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6273 && ((page_header->page_code & SMPH_SPF) == 0)) { 6274 page_index = &lun->mode_pages.index[i]; 6275 page_len = page_header->page_length; 6276 break; 6277 } 6278 6279 /* 6280 * If both pages have subpages, then the subpage numbers 6281 * have to match. 6282 */ 6283 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6284 && (page_header->page_code & SMPH_SPF)) { 6285 struct scsi_mode_page_header_sp *sph; 6286 6287 sph = (struct scsi_mode_page_header_sp *)page_header; 6288 6289 if (lun->mode_pages.index[i].subpage == 6290 sph->subpage) { 6291 page_index = &lun->mode_pages.index[i]; 6292 page_len = scsi_2btoul(sph->page_length); 6293 break; 6294 } 6295 } 6296 } 6297 6298 /* 6299 * If we couldn't find the page, or if we don't have a mode select 6300 * handler for it, send back an error to the user. 6301 */ 6302 if ((page_index == NULL) 6303 || (page_index->select_handler == NULL)) { 6304 ctl_set_invalid_field(ctsio, 6305 /*sks_valid*/ 1, 6306 /*command*/ 0, 6307 /*field*/ *len_used, 6308 /*bit_valid*/ 0, 6309 /*bit*/ 0); 6310 free(ctsio->kern_data_ptr, M_CTL); 6311 ctl_done((union ctl_io *)ctsio); 6312 return (CTL_RETVAL_COMPLETE); 6313 } 6314 6315 if (page_index->page_code & SMPH_SPF) { 6316 page_len_offset = 2; 6317 page_len_size = 2; 6318 } else { 6319 page_len_size = 1; 6320 page_len_offset = 1; 6321 } 6322 6323 /* 6324 * If the length the initiator gives us isn't the one we specify in 6325 * the mode page header, or if they didn't specify enough data in 6326 * the CDB to avoid truncating this page, kick out the request. 6327 */ 6328 if ((page_len != (page_index->page_len - page_len_offset - 6329 page_len_size)) 6330 || (*len_left < page_index->page_len)) { 6331 6332 6333 ctl_set_invalid_field(ctsio, 6334 /*sks_valid*/ 1, 6335 /*command*/ 0, 6336 /*field*/ *len_used + page_len_offset, 6337 /*bit_valid*/ 0, 6338 /*bit*/ 0); 6339 free(ctsio->kern_data_ptr, M_CTL); 6340 ctl_done((union ctl_io *)ctsio); 6341 return (CTL_RETVAL_COMPLETE); 6342 } 6343 6344 /* 6345 * Run through the mode page, checking to make sure that the bits 6346 * the user changed are actually legal for him to change. 6347 */ 6348 for (i = 0; i < page_index->page_len; i++) { 6349 uint8_t *user_byte, *change_mask, *current_byte; 6350 int bad_bit; 6351 int j; 6352 6353 user_byte = (uint8_t *)page_header + i; 6354 change_mask = page_index->page_data + 6355 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6356 current_byte = page_index->page_data + 6357 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6358 6359 /* 6360 * Check to see whether the user set any bits in this byte 6361 * that he is not allowed to set. 6362 */ 6363 if ((*user_byte & ~(*change_mask)) == 6364 (*current_byte & ~(*change_mask))) 6365 continue; 6366 6367 /* 6368 * Go through bit by bit to determine which one is illegal. 6369 */ 6370 bad_bit = 0; 6371 for (j = 7; j >= 0; j--) { 6372 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6373 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6374 bad_bit = i; 6375 break; 6376 } 6377 } 6378 ctl_set_invalid_field(ctsio, 6379 /*sks_valid*/ 1, 6380 /*command*/ 0, 6381 /*field*/ *len_used + i, 6382 /*bit_valid*/ 1, 6383 /*bit*/ bad_bit); 6384 free(ctsio->kern_data_ptr, M_CTL); 6385 ctl_done((union ctl_io *)ctsio); 6386 return (CTL_RETVAL_COMPLETE); 6387 } 6388 6389 /* 6390 * Decrement these before we call the page handler, since we may 6391 * end up getting called back one way or another before the handler 6392 * returns to this context. 6393 */ 6394 *len_left -= page_index->page_len; 6395 *len_used += page_index->page_len; 6396 6397 retval = page_index->select_handler(ctsio, page_index, 6398 (uint8_t *)page_header); 6399 6400 /* 6401 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6402 * wait until this queued command completes to finish processing 6403 * the mode page. If it returns anything other than 6404 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6405 * already set the sense information, freed the data pointer, and 6406 * completed the io for us. 6407 */ 6408 if (retval != CTL_RETVAL_COMPLETE) 6409 goto bailout_no_done; 6410 6411 /* 6412 * If the initiator sent us more than one page, parse the next one. 6413 */ 6414 if (*len_left > 0) 6415 goto do_next_page; 6416 6417 ctl_set_success(ctsio); 6418 free(ctsio->kern_data_ptr, M_CTL); 6419 ctl_done((union ctl_io *)ctsio); 6420 6421bailout_no_done: 6422 6423 return (CTL_RETVAL_COMPLETE); 6424 6425} 6426 6427int 6428ctl_mode_select(struct ctl_scsiio *ctsio) 6429{ 6430 int param_len, pf, sp; 6431 int header_size, bd_len; 6432 int len_left, len_used; 6433 struct ctl_page_index *page_index; 6434 struct ctl_lun *lun; 6435 int control_dev, page_len; 6436 union ctl_modepage_info *modepage_info; 6437 int retval; 6438 6439 pf = 0; 6440 sp = 0; 6441 page_len = 0; 6442 len_used = 0; 6443 len_left = 0; 6444 retval = 0; 6445 bd_len = 0; 6446 page_index = NULL; 6447 6448 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6449 6450 if (lun->be_lun->lun_type != T_DIRECT) 6451 control_dev = 1; 6452 else 6453 control_dev = 0; 6454 6455 switch (ctsio->cdb[0]) { 6456 case MODE_SELECT_6: { 6457 struct scsi_mode_select_6 *cdb; 6458 6459 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6460 6461 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6462 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6463 6464 param_len = cdb->length; 6465 header_size = sizeof(struct scsi_mode_header_6); 6466 break; 6467 } 6468 case MODE_SELECT_10: { 6469 struct scsi_mode_select_10 *cdb; 6470 6471 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6472 6473 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6474 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6475 6476 param_len = scsi_2btoul(cdb->length); 6477 header_size = sizeof(struct scsi_mode_header_10); 6478 break; 6479 } 6480 default: 6481 ctl_set_invalid_opcode(ctsio); 6482 ctl_done((union ctl_io *)ctsio); 6483 return (CTL_RETVAL_COMPLETE); 6484 break; /* NOTREACHED */ 6485 } 6486 6487 /* 6488 * From SPC-3: 6489 * "A parameter list length of zero indicates that the Data-Out Buffer 6490 * shall be empty. This condition shall not be considered as an error." 6491 */ 6492 if (param_len == 0) { 6493 ctl_set_success(ctsio); 6494 ctl_done((union ctl_io *)ctsio); 6495 return (CTL_RETVAL_COMPLETE); 6496 } 6497 6498 /* 6499 * Since we'll hit this the first time through, prior to 6500 * allocation, we don't need to free a data buffer here. 6501 */ 6502 if (param_len < header_size) { 6503 ctl_set_param_len_error(ctsio); 6504 ctl_done((union ctl_io *)ctsio); 6505 return (CTL_RETVAL_COMPLETE); 6506 } 6507 6508 /* 6509 * Allocate the data buffer and grab the user's data. In theory, 6510 * we shouldn't have to sanity check the parameter list length here 6511 * because the maximum size is 64K. We should be able to malloc 6512 * that much without too many problems. 6513 */ 6514 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6515 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6516 ctsio->kern_data_len = param_len; 6517 ctsio->kern_total_len = param_len; 6518 ctsio->kern_data_resid = 0; 6519 ctsio->kern_rel_offset = 0; 6520 ctsio->kern_sg_entries = 0; 6521 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6522 ctsio->be_move_done = ctl_config_move_done; 6523 ctl_datamove((union ctl_io *)ctsio); 6524 6525 return (CTL_RETVAL_COMPLETE); 6526 } 6527 6528 switch (ctsio->cdb[0]) { 6529 case MODE_SELECT_6: { 6530 struct scsi_mode_header_6 *mh6; 6531 6532 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6533 bd_len = mh6->blk_desc_len; 6534 break; 6535 } 6536 case MODE_SELECT_10: { 6537 struct scsi_mode_header_10 *mh10; 6538 6539 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6540 bd_len = scsi_2btoul(mh10->blk_desc_len); 6541 break; 6542 } 6543 default: 6544 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6545 break; 6546 } 6547 6548 if (param_len < (header_size + bd_len)) { 6549 free(ctsio->kern_data_ptr, M_CTL); 6550 ctl_set_param_len_error(ctsio); 6551 ctl_done((union ctl_io *)ctsio); 6552 return (CTL_RETVAL_COMPLETE); 6553 } 6554 6555 /* 6556 * Set the IO_CONT flag, so that if this I/O gets passed to 6557 * ctl_config_write_done(), it'll get passed back to 6558 * ctl_do_mode_select() for further processing, or completion if 6559 * we're all done. 6560 */ 6561 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6562 ctsio->io_cont = ctl_do_mode_select; 6563 6564 modepage_info = (union ctl_modepage_info *) 6565 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6566 6567 memset(modepage_info, 0, sizeof(*modepage_info)); 6568 6569 len_left = param_len - header_size - bd_len; 6570 len_used = header_size + bd_len; 6571 6572 modepage_info->header.len_left = len_left; 6573 modepage_info->header.len_used = len_used; 6574 6575 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6576} 6577 6578int 6579ctl_mode_sense(struct ctl_scsiio *ctsio) 6580{ 6581 struct ctl_lun *lun; 6582 int pc, page_code, dbd, llba, subpage; 6583 int alloc_len, page_len, header_len, total_len; 6584 struct scsi_mode_block_descr *block_desc; 6585 struct ctl_page_index *page_index; 6586 int control_dev; 6587 6588 dbd = 0; 6589 llba = 0; 6590 block_desc = NULL; 6591 page_index = NULL; 6592 6593 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6594 6595 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6596 6597 if (lun->be_lun->lun_type != T_DIRECT) 6598 control_dev = 1; 6599 else 6600 control_dev = 0; 6601 6602 switch (ctsio->cdb[0]) { 6603 case MODE_SENSE_6: { 6604 struct scsi_mode_sense_6 *cdb; 6605 6606 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6607 6608 header_len = sizeof(struct scsi_mode_hdr_6); 6609 if (cdb->byte2 & SMS_DBD) 6610 dbd = 1; 6611 else 6612 header_len += sizeof(struct scsi_mode_block_descr); 6613 6614 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6615 page_code = cdb->page & SMS_PAGE_CODE; 6616 subpage = cdb->subpage; 6617 alloc_len = cdb->length; 6618 break; 6619 } 6620 case MODE_SENSE_10: { 6621 struct scsi_mode_sense_10 *cdb; 6622 6623 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6624 6625 header_len = sizeof(struct scsi_mode_hdr_10); 6626 6627 if (cdb->byte2 & SMS_DBD) 6628 dbd = 1; 6629 else 6630 header_len += sizeof(struct scsi_mode_block_descr); 6631 if (cdb->byte2 & SMS10_LLBAA) 6632 llba = 1; 6633 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6634 page_code = cdb->page & SMS_PAGE_CODE; 6635 subpage = cdb->subpage; 6636 alloc_len = scsi_2btoul(cdb->length); 6637 break; 6638 } 6639 default: 6640 ctl_set_invalid_opcode(ctsio); 6641 ctl_done((union ctl_io *)ctsio); 6642 return (CTL_RETVAL_COMPLETE); 6643 break; /* NOTREACHED */ 6644 } 6645 6646 /* 6647 * We have to make a first pass through to calculate the size of 6648 * the pages that match the user's query. Then we allocate enough 6649 * memory to hold it, and actually copy the data into the buffer. 6650 */ 6651 switch (page_code) { 6652 case SMS_ALL_PAGES_PAGE: { 6653 int i; 6654 6655 page_len = 0; 6656 6657 /* 6658 * At the moment, values other than 0 and 0xff here are 6659 * reserved according to SPC-3. 6660 */ 6661 if ((subpage != SMS_SUBPAGE_PAGE_0) 6662 && (subpage != SMS_SUBPAGE_ALL)) { 6663 ctl_set_invalid_field(ctsio, 6664 /*sks_valid*/ 1, 6665 /*command*/ 1, 6666 /*field*/ 3, 6667 /*bit_valid*/ 0, 6668 /*bit*/ 0); 6669 ctl_done((union ctl_io *)ctsio); 6670 return (CTL_RETVAL_COMPLETE); 6671 } 6672 6673 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6674 if ((control_dev != 0) 6675 && (lun->mode_pages.index[i].page_flags & 6676 CTL_PAGE_FLAG_DISK_ONLY)) 6677 continue; 6678 6679 /* 6680 * We don't use this subpage if the user didn't 6681 * request all subpages. 6682 */ 6683 if ((lun->mode_pages.index[i].subpage != 0) 6684 && (subpage == SMS_SUBPAGE_PAGE_0)) 6685 continue; 6686 6687#if 0 6688 printf("found page %#x len %d\n", 6689 lun->mode_pages.index[i].page_code & 6690 SMPH_PC_MASK, 6691 lun->mode_pages.index[i].page_len); 6692#endif 6693 page_len += lun->mode_pages.index[i].page_len; 6694 } 6695 break; 6696 } 6697 default: { 6698 int i; 6699 6700 page_len = 0; 6701 6702 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6703 /* Look for the right page code */ 6704 if ((lun->mode_pages.index[i].page_code & 6705 SMPH_PC_MASK) != page_code) 6706 continue; 6707 6708 /* Look for the right subpage or the subpage wildcard*/ 6709 if ((lun->mode_pages.index[i].subpage != subpage) 6710 && (subpage != SMS_SUBPAGE_ALL)) 6711 continue; 6712 6713 /* Make sure the page is supported for this dev type */ 6714 if ((control_dev != 0) 6715 && (lun->mode_pages.index[i].page_flags & 6716 CTL_PAGE_FLAG_DISK_ONLY)) 6717 continue; 6718 6719#if 0 6720 printf("found page %#x len %d\n", 6721 lun->mode_pages.index[i].page_code & 6722 SMPH_PC_MASK, 6723 lun->mode_pages.index[i].page_len); 6724#endif 6725 6726 page_len += lun->mode_pages.index[i].page_len; 6727 } 6728 6729 if (page_len == 0) { 6730 ctl_set_invalid_field(ctsio, 6731 /*sks_valid*/ 1, 6732 /*command*/ 1, 6733 /*field*/ 2, 6734 /*bit_valid*/ 1, 6735 /*bit*/ 5); 6736 ctl_done((union ctl_io *)ctsio); 6737 return (CTL_RETVAL_COMPLETE); 6738 } 6739 break; 6740 } 6741 } 6742 6743 total_len = header_len + page_len; 6744#if 0 6745 printf("header_len = %d, page_len = %d, total_len = %d\n", 6746 header_len, page_len, total_len); 6747#endif 6748 6749 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6750 ctsio->kern_sg_entries = 0; 6751 ctsio->kern_data_resid = 0; 6752 ctsio->kern_rel_offset = 0; 6753 if (total_len < alloc_len) { 6754 ctsio->residual = alloc_len - total_len; 6755 ctsio->kern_data_len = total_len; 6756 ctsio->kern_total_len = total_len; 6757 } else { 6758 ctsio->residual = 0; 6759 ctsio->kern_data_len = alloc_len; 6760 ctsio->kern_total_len = alloc_len; 6761 } 6762 6763 switch (ctsio->cdb[0]) { 6764 case MODE_SENSE_6: { 6765 struct scsi_mode_hdr_6 *header; 6766 6767 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6768 6769 header->datalen = ctl_min(total_len - 1, 254); 6770 6771 if (dbd) 6772 header->block_descr_len = 0; 6773 else 6774 header->block_descr_len = 6775 sizeof(struct scsi_mode_block_descr); 6776 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6777 break; 6778 } 6779 case MODE_SENSE_10: { 6780 struct scsi_mode_hdr_10 *header; 6781 int datalen; 6782 6783 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6784 6785 datalen = ctl_min(total_len - 2, 65533); 6786 scsi_ulto2b(datalen, header->datalen); 6787 if (dbd) 6788 scsi_ulto2b(0, header->block_descr_len); 6789 else 6790 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6791 header->block_descr_len); 6792 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6793 break; 6794 } 6795 default: 6796 panic("invalid CDB type %#x", ctsio->cdb[0]); 6797 break; /* NOTREACHED */ 6798 } 6799 6800 /* 6801 * If we've got a disk, use its blocksize in the block 6802 * descriptor. Otherwise, just set it to 0. 6803 */ 6804 if (dbd == 0) { 6805 if (control_dev != 0) 6806 scsi_ulto3b(lun->be_lun->blocksize, 6807 block_desc->block_len); 6808 else 6809 scsi_ulto3b(0, block_desc->block_len); 6810 } 6811 6812 switch (page_code) { 6813 case SMS_ALL_PAGES_PAGE: { 6814 int i, data_used; 6815 6816 data_used = header_len; 6817 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6818 struct ctl_page_index *page_index; 6819 6820 page_index = &lun->mode_pages.index[i]; 6821 6822 if ((control_dev != 0) 6823 && (page_index->page_flags & 6824 CTL_PAGE_FLAG_DISK_ONLY)) 6825 continue; 6826 6827 /* 6828 * We don't use this subpage if the user didn't 6829 * request all subpages. We already checked (above) 6830 * to make sure the user only specified a subpage 6831 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6832 */ 6833 if ((page_index->subpage != 0) 6834 && (subpage == SMS_SUBPAGE_PAGE_0)) 6835 continue; 6836 6837 /* 6838 * Call the handler, if it exists, to update the 6839 * page to the latest values. 6840 */ 6841 if (page_index->sense_handler != NULL) 6842 page_index->sense_handler(ctsio, page_index,pc); 6843 6844 memcpy(ctsio->kern_data_ptr + data_used, 6845 page_index->page_data + 6846 (page_index->page_len * pc), 6847 page_index->page_len); 6848 data_used += page_index->page_len; 6849 } 6850 break; 6851 } 6852 default: { 6853 int i, data_used; 6854 6855 data_used = header_len; 6856 6857 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6858 struct ctl_page_index *page_index; 6859 6860 page_index = &lun->mode_pages.index[i]; 6861 6862 /* Look for the right page code */ 6863 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6864 continue; 6865 6866 /* Look for the right subpage or the subpage wildcard*/ 6867 if ((page_index->subpage != subpage) 6868 && (subpage != SMS_SUBPAGE_ALL)) 6869 continue; 6870 6871 /* Make sure the page is supported for this dev type */ 6872 if ((control_dev != 0) 6873 && (page_index->page_flags & 6874 CTL_PAGE_FLAG_DISK_ONLY)) 6875 continue; 6876 6877 /* 6878 * Call the handler, if it exists, to update the 6879 * page to the latest values. 6880 */ 6881 if (page_index->sense_handler != NULL) 6882 page_index->sense_handler(ctsio, page_index,pc); 6883 6884 memcpy(ctsio->kern_data_ptr + data_used, 6885 page_index->page_data + 6886 (page_index->page_len * pc), 6887 page_index->page_len); 6888 data_used += page_index->page_len; 6889 } 6890 break; 6891 } 6892 } 6893 6894 ctsio->scsi_status = SCSI_STATUS_OK; 6895 6896 ctsio->be_move_done = ctl_config_move_done; 6897 ctl_datamove((union ctl_io *)ctsio); 6898 6899 return (CTL_RETVAL_COMPLETE); 6900} 6901 6902int 6903ctl_read_capacity(struct ctl_scsiio *ctsio) 6904{ 6905 struct scsi_read_capacity *cdb; 6906 struct scsi_read_capacity_data *data; 6907 struct ctl_lun *lun; 6908 uint32_t lba; 6909 6910 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 6911 6912 cdb = (struct scsi_read_capacity *)ctsio->cdb; 6913 6914 lba = scsi_4btoul(cdb->addr); 6915 if (((cdb->pmi & SRC_PMI) == 0) 6916 && (lba != 0)) { 6917 ctl_set_invalid_field(/*ctsio*/ ctsio, 6918 /*sks_valid*/ 1, 6919 /*command*/ 1, 6920 /*field*/ 2, 6921 /*bit_valid*/ 0, 6922 /*bit*/ 0); 6923 ctl_done((union ctl_io *)ctsio); 6924 return (CTL_RETVAL_COMPLETE); 6925 } 6926 6927 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6928 6929 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 6930 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 6931 ctsio->residual = 0; 6932 ctsio->kern_data_len = sizeof(*data); 6933 ctsio->kern_total_len = sizeof(*data); 6934 ctsio->kern_data_resid = 0; 6935 ctsio->kern_rel_offset = 0; 6936 ctsio->kern_sg_entries = 0; 6937 6938 /* 6939 * If the maximum LBA is greater than 0xfffffffe, the user must 6940 * issue a SERVICE ACTION IN (16) command, with the read capacity 6941 * serivce action set. 6942 */ 6943 if (lun->be_lun->maxlba > 0xfffffffe) 6944 scsi_ulto4b(0xffffffff, data->addr); 6945 else 6946 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 6947 6948 /* 6949 * XXX KDM this may not be 512 bytes... 6950 */ 6951 scsi_ulto4b(lun->be_lun->blocksize, data->length); 6952 6953 ctsio->scsi_status = SCSI_STATUS_OK; 6954 6955 ctsio->be_move_done = ctl_config_move_done; 6956 ctl_datamove((union ctl_io *)ctsio); 6957 6958 return (CTL_RETVAL_COMPLETE); 6959} 6960 6961static int 6962ctl_read_capacity_16(struct ctl_scsiio *ctsio) 6963{ 6964 struct scsi_read_capacity_16 *cdb; 6965 struct scsi_read_capacity_data_long *data; 6966 struct ctl_lun *lun; 6967 uint64_t lba; 6968 uint32_t alloc_len; 6969 6970 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 6971 6972 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 6973 6974 alloc_len = scsi_4btoul(cdb->alloc_len); 6975 lba = scsi_8btou64(cdb->addr); 6976 6977 if ((cdb->reladr & SRC16_PMI) 6978 && (lba != 0)) { 6979 ctl_set_invalid_field(/*ctsio*/ ctsio, 6980 /*sks_valid*/ 1, 6981 /*command*/ 1, 6982 /*field*/ 2, 6983 /*bit_valid*/ 0, 6984 /*bit*/ 0); 6985 ctl_done((union ctl_io *)ctsio); 6986 return (CTL_RETVAL_COMPLETE); 6987 } 6988 6989 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6990 6991 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 6992 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 6993 6994 if (sizeof(*data) < alloc_len) { 6995 ctsio->residual = alloc_len - sizeof(*data); 6996 ctsio->kern_data_len = sizeof(*data); 6997 ctsio->kern_total_len = sizeof(*data); 6998 } else { 6999 ctsio->residual = 0; 7000 ctsio->kern_data_len = alloc_len; 7001 ctsio->kern_total_len = alloc_len; 7002 } 7003 ctsio->kern_data_resid = 0; 7004 ctsio->kern_rel_offset = 0; 7005 ctsio->kern_sg_entries = 0; 7006 7007 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7008 /* XXX KDM this may not be 512 bytes... */ 7009 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7010 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7011 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7012 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7013 data->lalba_lbp[0] |= SRC16_LBPME; 7014 7015 ctsio->scsi_status = SCSI_STATUS_OK; 7016 7017 ctsio->be_move_done = ctl_config_move_done; 7018 ctl_datamove((union ctl_io *)ctsio); 7019 7020 return (CTL_RETVAL_COMPLETE); 7021} 7022 7023int 7024ctl_service_action_in(struct ctl_scsiio *ctsio) 7025{ 7026 struct scsi_service_action_in *cdb; 7027 int retval; 7028 7029 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 7030 7031 cdb = (struct scsi_service_action_in *)ctsio->cdb; 7032 7033 retval = CTL_RETVAL_COMPLETE; 7034 7035 switch (cdb->service_action) { 7036 case SRC16_SERVICE_ACTION: 7037 retval = ctl_read_capacity_16(ctsio); 7038 break; 7039 default: 7040 ctl_set_invalid_field(/*ctsio*/ ctsio, 7041 /*sks_valid*/ 1, 7042 /*command*/ 1, 7043 /*field*/ 1, 7044 /*bit_valid*/ 1, 7045 /*bit*/ 4); 7046 ctl_done((union ctl_io *)ctsio); 7047 break; 7048 } 7049 7050 return (retval); 7051} 7052 7053int 7054ctl_maintenance_in(struct ctl_scsiio *ctsio) 7055{ 7056 struct scsi_maintenance_in *cdb; 7057 int retval; 7058 int alloc_len, total_len = 0; 7059 int num_target_port_groups, single; 7060 struct ctl_lun *lun; 7061 struct ctl_softc *softc; 7062 struct scsi_target_group_data *rtg_ptr; 7063 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 7064 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 7065 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 7066 7067 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 7068 7069 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 7070 softc = control_softc; 7071 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7072 7073 retval = CTL_RETVAL_COMPLETE; 7074 7075 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 7076 ctl_set_invalid_field(/*ctsio*/ ctsio, 7077 /*sks_valid*/ 1, 7078 /*command*/ 1, 7079 /*field*/ 1, 7080 /*bit_valid*/ 1, 7081 /*bit*/ 4); 7082 ctl_done((union ctl_io *)ctsio); 7083 return(retval); 7084 } 7085 7086 single = ctl_is_single; 7087 if (single) 7088 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 7089 else 7090 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7091 7092 total_len = sizeof(struct scsi_target_group_data) + 7093 sizeof(struct scsi_target_port_group_descriptor) * 7094 num_target_port_groups + 7095 sizeof(struct scsi_target_port_descriptor) * 7096 NUM_PORTS_PER_GRP * num_target_port_groups; 7097 7098 alloc_len = scsi_4btoul(cdb->length); 7099 7100 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7101 7102 ctsio->kern_sg_entries = 0; 7103 7104 if (total_len < alloc_len) { 7105 ctsio->residual = alloc_len - total_len; 7106 ctsio->kern_data_len = total_len; 7107 ctsio->kern_total_len = total_len; 7108 } else { 7109 ctsio->residual = 0; 7110 ctsio->kern_data_len = alloc_len; 7111 ctsio->kern_total_len = alloc_len; 7112 } 7113 ctsio->kern_data_resid = 0; 7114 ctsio->kern_rel_offset = 0; 7115 7116 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7117 7118 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7119 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7120 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7121 &tp_desc_ptr1_1->desc_list[0]; 7122 7123 if (single == 0) { 7124 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7125 &tp_desc_ptr1_2->desc_list[0]; 7126 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7127 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7128 &tp_desc_ptr2_1->desc_list[0]; 7129 } else { 7130 tpg_desc_ptr2 = NULL; 7131 tp_desc_ptr2_1 = NULL; 7132 tp_desc_ptr2_2 = NULL; 7133 } 7134 7135 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7136 if (single == 0) { 7137 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7138 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7139 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7140 tpg_desc_ptr2->pref_state = 7141 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7142 } else { 7143 tpg_desc_ptr1->pref_state = 7144 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7145 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7146 } 7147 } else { 7148 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7149 tpg_desc_ptr1->pref_state = 7150 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7151 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7152 } else { 7153 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7154 tpg_desc_ptr2->pref_state = 7155 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7156 } 7157 } 7158 } else { 7159 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7160 } 7161 tpg_desc_ptr1->support = 0; 7162 tpg_desc_ptr1->target_port_group[1] = 1; 7163 tpg_desc_ptr1->status = TPG_IMPLICIT; 7164 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7165 7166 if (single == 0) { 7167 tpg_desc_ptr2->support = 0; 7168 tpg_desc_ptr2->target_port_group[1] = 2; 7169 tpg_desc_ptr2->status = TPG_IMPLICIT; 7170 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7171 7172 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7173 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7174 7175 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7176 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7177 } else { 7178 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7179 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7180 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7181 } else { 7182 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7183 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7184 } 7185 } 7186 7187 ctsio->be_move_done = ctl_config_move_done; 7188 7189 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7190 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7191 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7192 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7193 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7194 7195 ctl_datamove((union ctl_io *)ctsio); 7196 return(retval); 7197} 7198 7199int 7200ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7201{ 7202 struct scsi_per_res_in *cdb; 7203 int alloc_len, total_len = 0; 7204 /* struct scsi_per_res_in_rsrv in_data; */ 7205 struct ctl_lun *lun; 7206 struct ctl_softc *softc; 7207 7208 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7209 7210 softc = control_softc; 7211 7212 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7213 7214 alloc_len = scsi_2btoul(cdb->length); 7215 7216 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7217 7218retry: 7219 mtx_lock(&lun->lun_lock); 7220 switch (cdb->action) { 7221 case SPRI_RK: /* read keys */ 7222 total_len = sizeof(struct scsi_per_res_in_keys) + 7223 lun->pr_key_count * 7224 sizeof(struct scsi_per_res_key); 7225 break; 7226 case SPRI_RR: /* read reservation */ 7227 if (lun->flags & CTL_LUN_PR_RESERVED) 7228 total_len = sizeof(struct scsi_per_res_in_rsrv); 7229 else 7230 total_len = sizeof(struct scsi_per_res_in_header); 7231 break; 7232 case SPRI_RC: /* report capabilities */ 7233 total_len = sizeof(struct scsi_per_res_cap); 7234 break; 7235 case SPRI_RS: /* read full status */ 7236 default: 7237 mtx_unlock(&lun->lun_lock); 7238 ctl_set_invalid_field(ctsio, 7239 /*sks_valid*/ 1, 7240 /*command*/ 1, 7241 /*field*/ 1, 7242 /*bit_valid*/ 1, 7243 /*bit*/ 0); 7244 ctl_done((union ctl_io *)ctsio); 7245 return (CTL_RETVAL_COMPLETE); 7246 break; /* NOTREACHED */ 7247 } 7248 mtx_unlock(&lun->lun_lock); 7249 7250 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7251 7252 if (total_len < alloc_len) { 7253 ctsio->residual = alloc_len - total_len; 7254 ctsio->kern_data_len = total_len; 7255 ctsio->kern_total_len = total_len; 7256 } else { 7257 ctsio->residual = 0; 7258 ctsio->kern_data_len = alloc_len; 7259 ctsio->kern_total_len = alloc_len; 7260 } 7261 7262 ctsio->kern_data_resid = 0; 7263 ctsio->kern_rel_offset = 0; 7264 ctsio->kern_sg_entries = 0; 7265 7266 mtx_lock(&lun->lun_lock); 7267 switch (cdb->action) { 7268 case SPRI_RK: { // read keys 7269 struct scsi_per_res_in_keys *res_keys; 7270 int i, key_count; 7271 7272 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7273 7274 /* 7275 * We had to drop the lock to allocate our buffer, which 7276 * leaves time for someone to come in with another 7277 * persistent reservation. (That is unlikely, though, 7278 * since this should be the only persistent reservation 7279 * command active right now.) 7280 */ 7281 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7282 (lun->pr_key_count * 7283 sizeof(struct scsi_per_res_key)))){ 7284 mtx_unlock(&lun->lun_lock); 7285 free(ctsio->kern_data_ptr, M_CTL); 7286 printf("%s: reservation length changed, retrying\n", 7287 __func__); 7288 goto retry; 7289 } 7290 7291 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7292 7293 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7294 lun->pr_key_count, res_keys->header.length); 7295 7296 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7297 if (!lun->per_res[i].registered) 7298 continue; 7299 7300 /* 7301 * We used lun->pr_key_count to calculate the 7302 * size to allocate. If it turns out the number of 7303 * initiators with the registered flag set is 7304 * larger than that (i.e. they haven't been kept in 7305 * sync), we've got a problem. 7306 */ 7307 if (key_count >= lun->pr_key_count) { 7308#ifdef NEEDTOPORT 7309 csevent_log(CSC_CTL | CSC_SHELF_SW | 7310 CTL_PR_ERROR, 7311 csevent_LogType_Fault, 7312 csevent_AlertLevel_Yellow, 7313 csevent_FRU_ShelfController, 7314 csevent_FRU_Firmware, 7315 csevent_FRU_Unknown, 7316 "registered keys %d >= key " 7317 "count %d", key_count, 7318 lun->pr_key_count); 7319#endif 7320 key_count++; 7321 continue; 7322 } 7323 memcpy(res_keys->keys[key_count].key, 7324 lun->per_res[i].res_key.key, 7325 ctl_min(sizeof(res_keys->keys[key_count].key), 7326 sizeof(lun->per_res[i].res_key))); 7327 key_count++; 7328 } 7329 break; 7330 } 7331 case SPRI_RR: { // read reservation 7332 struct scsi_per_res_in_rsrv *res; 7333 int tmp_len, header_only; 7334 7335 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7336 7337 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7338 7339 if (lun->flags & CTL_LUN_PR_RESERVED) 7340 { 7341 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7342 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7343 res->header.length); 7344 header_only = 0; 7345 } else { 7346 tmp_len = sizeof(struct scsi_per_res_in_header); 7347 scsi_ulto4b(0, res->header.length); 7348 header_only = 1; 7349 } 7350 7351 /* 7352 * We had to drop the lock to allocate our buffer, which 7353 * leaves time for someone to come in with another 7354 * persistent reservation. (That is unlikely, though, 7355 * since this should be the only persistent reservation 7356 * command active right now.) 7357 */ 7358 if (tmp_len != total_len) { 7359 mtx_unlock(&lun->lun_lock); 7360 free(ctsio->kern_data_ptr, M_CTL); 7361 printf("%s: reservation status changed, retrying\n", 7362 __func__); 7363 goto retry; 7364 } 7365 7366 /* 7367 * No reservation held, so we're done. 7368 */ 7369 if (header_only != 0) 7370 break; 7371 7372 /* 7373 * If the registration is an All Registrants type, the key 7374 * is 0, since it doesn't really matter. 7375 */ 7376 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7377 memcpy(res->data.reservation, 7378 &lun->per_res[lun->pr_res_idx].res_key, 7379 sizeof(struct scsi_per_res_key)); 7380 } 7381 res->data.scopetype = lun->res_type; 7382 break; 7383 } 7384 case SPRI_RC: //report capabilities 7385 { 7386 struct scsi_per_res_cap *res_cap; 7387 uint16_t type_mask; 7388 7389 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7390 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7391 res_cap->flags2 |= SPRI_TMV; 7392 type_mask = SPRI_TM_WR_EX_AR | 7393 SPRI_TM_EX_AC_RO | 7394 SPRI_TM_WR_EX_RO | 7395 SPRI_TM_EX_AC | 7396 SPRI_TM_WR_EX | 7397 SPRI_TM_EX_AC_AR; 7398 scsi_ulto2b(type_mask, res_cap->type_mask); 7399 break; 7400 } 7401 case SPRI_RS: //read full status 7402 default: 7403 /* 7404 * This is a bug, because we just checked for this above, 7405 * and should have returned an error. 7406 */ 7407 panic("Invalid PR type %x", cdb->action); 7408 break; /* NOTREACHED */ 7409 } 7410 mtx_unlock(&lun->lun_lock); 7411 7412 ctsio->be_move_done = ctl_config_move_done; 7413 7414 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7415 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7416 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7417 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7418 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7419 7420 ctl_datamove((union ctl_io *)ctsio); 7421 7422 return (CTL_RETVAL_COMPLETE); 7423} 7424 7425/* 7426 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7427 * it should return. 7428 */ 7429static int 7430ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7431 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7432 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7433 struct scsi_per_res_out_parms* param) 7434{ 7435 union ctl_ha_msg persis_io; 7436 int retval, i; 7437 int isc_retval; 7438 7439 retval = 0; 7440 7441 mtx_lock(&lun->lun_lock); 7442 if (sa_res_key == 0) { 7443 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7444 /* validate scope and type */ 7445 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7446 SPR_LU_SCOPE) { 7447 mtx_unlock(&lun->lun_lock); 7448 ctl_set_invalid_field(/*ctsio*/ ctsio, 7449 /*sks_valid*/ 1, 7450 /*command*/ 1, 7451 /*field*/ 2, 7452 /*bit_valid*/ 1, 7453 /*bit*/ 4); 7454 ctl_done((union ctl_io *)ctsio); 7455 return (1); 7456 } 7457 7458 if (type>8 || type==2 || type==4 || type==0) { 7459 mtx_unlock(&lun->lun_lock); 7460 ctl_set_invalid_field(/*ctsio*/ ctsio, 7461 /*sks_valid*/ 1, 7462 /*command*/ 1, 7463 /*field*/ 2, 7464 /*bit_valid*/ 1, 7465 /*bit*/ 0); 7466 ctl_done((union ctl_io *)ctsio); 7467 return (1); 7468 } 7469 7470 /* temporarily unregister this nexus */ 7471 lun->per_res[residx].registered = 0; 7472 7473 /* 7474 * Unregister everybody else and build UA for 7475 * them 7476 */ 7477 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7478 if (lun->per_res[i].registered == 0) 7479 continue; 7480 7481 if (!persis_offset 7482 && i <CTL_MAX_INITIATORS) 7483 lun->pending_sense[i].ua_pending |= 7484 CTL_UA_REG_PREEMPT; 7485 else if (persis_offset 7486 && i >= persis_offset) 7487 lun->pending_sense[i-persis_offset 7488 ].ua_pending |= 7489 CTL_UA_REG_PREEMPT; 7490 lun->per_res[i].registered = 0; 7491 memset(&lun->per_res[i].res_key, 0, 7492 sizeof(struct scsi_per_res_key)); 7493 } 7494 lun->per_res[residx].registered = 1; 7495 lun->pr_key_count = 1; 7496 lun->res_type = type; 7497 if (lun->res_type != SPR_TYPE_WR_EX_AR 7498 && lun->res_type != SPR_TYPE_EX_AC_AR) 7499 lun->pr_res_idx = residx; 7500 7501 /* send msg to other side */ 7502 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7503 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7504 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7505 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7506 persis_io.pr.pr_info.res_type = type; 7507 memcpy(persis_io.pr.pr_info.sa_res_key, 7508 param->serv_act_res_key, 7509 sizeof(param->serv_act_res_key)); 7510 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7511 &persis_io, sizeof(persis_io), 0)) > 7512 CTL_HA_STATUS_SUCCESS) { 7513 printf("CTL:Persis Out error returned " 7514 "from ctl_ha_msg_send %d\n", 7515 isc_retval); 7516 } 7517 } else { 7518 /* not all registrants */ 7519 mtx_unlock(&lun->lun_lock); 7520 free(ctsio->kern_data_ptr, M_CTL); 7521 ctl_set_invalid_field(ctsio, 7522 /*sks_valid*/ 1, 7523 /*command*/ 0, 7524 /*field*/ 8, 7525 /*bit_valid*/ 0, 7526 /*bit*/ 0); 7527 ctl_done((union ctl_io *)ctsio); 7528 return (1); 7529 } 7530 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7531 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7532 int found = 0; 7533 7534 if (res_key == sa_res_key) { 7535 /* special case */ 7536 /* 7537 * The spec implies this is not good but doesn't 7538 * say what to do. There are two choices either 7539 * generate a res conflict or check condition 7540 * with illegal field in parameter data. Since 7541 * that is what is done when the sa_res_key is 7542 * zero I'll take that approach since this has 7543 * to do with the sa_res_key. 7544 */ 7545 mtx_unlock(&lun->lun_lock); 7546 free(ctsio->kern_data_ptr, M_CTL); 7547 ctl_set_invalid_field(ctsio, 7548 /*sks_valid*/ 1, 7549 /*command*/ 0, 7550 /*field*/ 8, 7551 /*bit_valid*/ 0, 7552 /*bit*/ 0); 7553 ctl_done((union ctl_io *)ctsio); 7554 return (1); 7555 } 7556 7557 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7558 if (lun->per_res[i].registered 7559 && memcmp(param->serv_act_res_key, 7560 lun->per_res[i].res_key.key, 7561 sizeof(struct scsi_per_res_key)) != 0) 7562 continue; 7563 7564 found = 1; 7565 lun->per_res[i].registered = 0; 7566 memset(&lun->per_res[i].res_key, 0, 7567 sizeof(struct scsi_per_res_key)); 7568 lun->pr_key_count--; 7569 7570 if (!persis_offset 7571 && i < CTL_MAX_INITIATORS) 7572 lun->pending_sense[i].ua_pending |= 7573 CTL_UA_REG_PREEMPT; 7574 else if (persis_offset 7575 && i >= persis_offset) 7576 lun->pending_sense[i-persis_offset].ua_pending|= 7577 CTL_UA_REG_PREEMPT; 7578 } 7579 if (!found) { 7580 mtx_unlock(&lun->lun_lock); 7581 free(ctsio->kern_data_ptr, M_CTL); 7582 ctl_set_reservation_conflict(ctsio); 7583 ctl_done((union ctl_io *)ctsio); 7584 return (CTL_RETVAL_COMPLETE); 7585 } 7586 /* send msg to other side */ 7587 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7588 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7589 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7590 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7591 persis_io.pr.pr_info.res_type = type; 7592 memcpy(persis_io.pr.pr_info.sa_res_key, 7593 param->serv_act_res_key, 7594 sizeof(param->serv_act_res_key)); 7595 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7596 &persis_io, sizeof(persis_io), 0)) > 7597 CTL_HA_STATUS_SUCCESS) { 7598 printf("CTL:Persis Out error returned from " 7599 "ctl_ha_msg_send %d\n", isc_retval); 7600 } 7601 } else { 7602 /* Reserved but not all registrants */ 7603 /* sa_res_key is res holder */ 7604 if (memcmp(param->serv_act_res_key, 7605 lun->per_res[lun->pr_res_idx].res_key.key, 7606 sizeof(struct scsi_per_res_key)) == 0) { 7607 /* validate scope and type */ 7608 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7609 SPR_LU_SCOPE) { 7610 mtx_unlock(&lun->lun_lock); 7611 ctl_set_invalid_field(/*ctsio*/ ctsio, 7612 /*sks_valid*/ 1, 7613 /*command*/ 1, 7614 /*field*/ 2, 7615 /*bit_valid*/ 1, 7616 /*bit*/ 4); 7617 ctl_done((union ctl_io *)ctsio); 7618 return (1); 7619 } 7620 7621 if (type>8 || type==2 || type==4 || type==0) { 7622 mtx_unlock(&lun->lun_lock); 7623 ctl_set_invalid_field(/*ctsio*/ ctsio, 7624 /*sks_valid*/ 1, 7625 /*command*/ 1, 7626 /*field*/ 2, 7627 /*bit_valid*/ 1, 7628 /*bit*/ 0); 7629 ctl_done((union ctl_io *)ctsio); 7630 return (1); 7631 } 7632 7633 /* 7634 * Do the following: 7635 * if sa_res_key != res_key remove all 7636 * registrants w/sa_res_key and generate UA 7637 * for these registrants(Registrations 7638 * Preempted) if it wasn't an exclusive 7639 * reservation generate UA(Reservations 7640 * Preempted) for all other registered nexuses 7641 * if the type has changed. Establish the new 7642 * reservation and holder. If res_key and 7643 * sa_res_key are the same do the above 7644 * except don't unregister the res holder. 7645 */ 7646 7647 /* 7648 * Temporarily unregister so it won't get 7649 * removed or UA generated 7650 */ 7651 lun->per_res[residx].registered = 0; 7652 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7653 if (lun->per_res[i].registered == 0) 7654 continue; 7655 7656 if (memcmp(param->serv_act_res_key, 7657 lun->per_res[i].res_key.key, 7658 sizeof(struct scsi_per_res_key)) == 0) { 7659 lun->per_res[i].registered = 0; 7660 memset(&lun->per_res[i].res_key, 7661 0, 7662 sizeof(struct scsi_per_res_key)); 7663 lun->pr_key_count--; 7664 7665 if (!persis_offset 7666 && i < CTL_MAX_INITIATORS) 7667 lun->pending_sense[i 7668 ].ua_pending |= 7669 CTL_UA_REG_PREEMPT; 7670 else if (persis_offset 7671 && i >= persis_offset) 7672 lun->pending_sense[ 7673 i-persis_offset].ua_pending |= 7674 CTL_UA_REG_PREEMPT; 7675 } else if (type != lun->res_type 7676 && (lun->res_type == SPR_TYPE_WR_EX_RO 7677 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7678 if (!persis_offset 7679 && i < CTL_MAX_INITIATORS) 7680 lun->pending_sense[i 7681 ].ua_pending |= 7682 CTL_UA_RES_RELEASE; 7683 else if (persis_offset 7684 && i >= persis_offset) 7685 lun->pending_sense[ 7686 i-persis_offset 7687 ].ua_pending |= 7688 CTL_UA_RES_RELEASE; 7689 } 7690 } 7691 lun->per_res[residx].registered = 1; 7692 lun->res_type = type; 7693 if (lun->res_type != SPR_TYPE_WR_EX_AR 7694 && lun->res_type != SPR_TYPE_EX_AC_AR) 7695 lun->pr_res_idx = residx; 7696 else 7697 lun->pr_res_idx = 7698 CTL_PR_ALL_REGISTRANTS; 7699 7700 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7701 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7702 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7703 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7704 persis_io.pr.pr_info.res_type = type; 7705 memcpy(persis_io.pr.pr_info.sa_res_key, 7706 param->serv_act_res_key, 7707 sizeof(param->serv_act_res_key)); 7708 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7709 &persis_io, sizeof(persis_io), 0)) > 7710 CTL_HA_STATUS_SUCCESS) { 7711 printf("CTL:Persis Out error returned " 7712 "from ctl_ha_msg_send %d\n", 7713 isc_retval); 7714 } 7715 } else { 7716 /* 7717 * sa_res_key is not the res holder just 7718 * remove registrants 7719 */ 7720 int found=0; 7721 7722 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7723 if (memcmp(param->serv_act_res_key, 7724 lun->per_res[i].res_key.key, 7725 sizeof(struct scsi_per_res_key)) != 0) 7726 continue; 7727 7728 found = 1; 7729 lun->per_res[i].registered = 0; 7730 memset(&lun->per_res[i].res_key, 0, 7731 sizeof(struct scsi_per_res_key)); 7732 lun->pr_key_count--; 7733 7734 if (!persis_offset 7735 && i < CTL_MAX_INITIATORS) 7736 lun->pending_sense[i].ua_pending |= 7737 CTL_UA_REG_PREEMPT; 7738 else if (persis_offset 7739 && i >= persis_offset) 7740 lun->pending_sense[ 7741 i-persis_offset].ua_pending |= 7742 CTL_UA_REG_PREEMPT; 7743 } 7744 7745 if (!found) { 7746 mtx_unlock(&lun->lun_lock); 7747 free(ctsio->kern_data_ptr, M_CTL); 7748 ctl_set_reservation_conflict(ctsio); 7749 ctl_done((union ctl_io *)ctsio); 7750 return (1); 7751 } 7752 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7753 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7754 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7755 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7756 persis_io.pr.pr_info.res_type = type; 7757 memcpy(persis_io.pr.pr_info.sa_res_key, 7758 param->serv_act_res_key, 7759 sizeof(param->serv_act_res_key)); 7760 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7761 &persis_io, sizeof(persis_io), 0)) > 7762 CTL_HA_STATUS_SUCCESS) { 7763 printf("CTL:Persis Out error returned " 7764 "from ctl_ha_msg_send %d\n", 7765 isc_retval); 7766 } 7767 } 7768 } 7769 7770 lun->PRGeneration++; 7771 mtx_unlock(&lun->lun_lock); 7772 7773 return (retval); 7774} 7775 7776static void 7777ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7778{ 7779 int i; 7780 7781 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7782 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7783 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7784 msg->pr.pr_info.sa_res_key, 7785 sizeof(struct scsi_per_res_key)) != 0) { 7786 uint64_t sa_res_key; 7787 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7788 7789 if (sa_res_key == 0) { 7790 /* temporarily unregister this nexus */ 7791 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7792 7793 /* 7794 * Unregister everybody else and build UA for 7795 * them 7796 */ 7797 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7798 if (lun->per_res[i].registered == 0) 7799 continue; 7800 7801 if (!persis_offset 7802 && i < CTL_MAX_INITIATORS) 7803 lun->pending_sense[i].ua_pending |= 7804 CTL_UA_REG_PREEMPT; 7805 else if (persis_offset && i >= persis_offset) 7806 lun->pending_sense[i - 7807 persis_offset].ua_pending |= 7808 CTL_UA_REG_PREEMPT; 7809 lun->per_res[i].registered = 0; 7810 memset(&lun->per_res[i].res_key, 0, 7811 sizeof(struct scsi_per_res_key)); 7812 } 7813 7814 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7815 lun->pr_key_count = 1; 7816 lun->res_type = msg->pr.pr_info.res_type; 7817 if (lun->res_type != SPR_TYPE_WR_EX_AR 7818 && lun->res_type != SPR_TYPE_EX_AC_AR) 7819 lun->pr_res_idx = msg->pr.pr_info.residx; 7820 } else { 7821 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7822 if (memcmp(msg->pr.pr_info.sa_res_key, 7823 lun->per_res[i].res_key.key, 7824 sizeof(struct scsi_per_res_key)) != 0) 7825 continue; 7826 7827 lun->per_res[i].registered = 0; 7828 memset(&lun->per_res[i].res_key, 0, 7829 sizeof(struct scsi_per_res_key)); 7830 lun->pr_key_count--; 7831 7832 if (!persis_offset 7833 && i < persis_offset) 7834 lun->pending_sense[i].ua_pending |= 7835 CTL_UA_REG_PREEMPT; 7836 else if (persis_offset 7837 && i >= persis_offset) 7838 lun->pending_sense[i - 7839 persis_offset].ua_pending |= 7840 CTL_UA_REG_PREEMPT; 7841 } 7842 } 7843 } else { 7844 /* 7845 * Temporarily unregister so it won't get removed 7846 * or UA generated 7847 */ 7848 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7849 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7850 if (lun->per_res[i].registered == 0) 7851 continue; 7852 7853 if (memcmp(msg->pr.pr_info.sa_res_key, 7854 lun->per_res[i].res_key.key, 7855 sizeof(struct scsi_per_res_key)) == 0) { 7856 lun->per_res[i].registered = 0; 7857 memset(&lun->per_res[i].res_key, 0, 7858 sizeof(struct scsi_per_res_key)); 7859 lun->pr_key_count--; 7860 if (!persis_offset 7861 && i < CTL_MAX_INITIATORS) 7862 lun->pending_sense[i].ua_pending |= 7863 CTL_UA_REG_PREEMPT; 7864 else if (persis_offset 7865 && i >= persis_offset) 7866 lun->pending_sense[i - 7867 persis_offset].ua_pending |= 7868 CTL_UA_REG_PREEMPT; 7869 } else if (msg->pr.pr_info.res_type != lun->res_type 7870 && (lun->res_type == SPR_TYPE_WR_EX_RO 7871 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7872 if (!persis_offset 7873 && i < persis_offset) 7874 lun->pending_sense[i 7875 ].ua_pending |= 7876 CTL_UA_RES_RELEASE; 7877 else if (persis_offset 7878 && i >= persis_offset) 7879 lun->pending_sense[i - 7880 persis_offset].ua_pending |= 7881 CTL_UA_RES_RELEASE; 7882 } 7883 } 7884 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7885 lun->res_type = msg->pr.pr_info.res_type; 7886 if (lun->res_type != SPR_TYPE_WR_EX_AR 7887 && lun->res_type != SPR_TYPE_EX_AC_AR) 7888 lun->pr_res_idx = msg->pr.pr_info.residx; 7889 else 7890 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7891 } 7892 lun->PRGeneration++; 7893 7894} 7895 7896 7897int 7898ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7899{ 7900 int retval; 7901 int isc_retval; 7902 u_int32_t param_len; 7903 struct scsi_per_res_out *cdb; 7904 struct ctl_lun *lun; 7905 struct scsi_per_res_out_parms* param; 7906 struct ctl_softc *softc; 7907 uint32_t residx; 7908 uint64_t res_key, sa_res_key; 7909 uint8_t type; 7910 union ctl_ha_msg persis_io; 7911 int i; 7912 7913 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 7914 7915 retval = CTL_RETVAL_COMPLETE; 7916 7917 softc = control_softc; 7918 7919 cdb = (struct scsi_per_res_out *)ctsio->cdb; 7920 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7921 7922 /* 7923 * We only support whole-LUN scope. The scope & type are ignored for 7924 * register, register and ignore existing key and clear. 7925 * We sometimes ignore scope and type on preempts too!! 7926 * Verify reservation type here as well. 7927 */ 7928 type = cdb->scope_type & SPR_TYPE_MASK; 7929 if ((cdb->action == SPRO_RESERVE) 7930 || (cdb->action == SPRO_RELEASE)) { 7931 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 7932 ctl_set_invalid_field(/*ctsio*/ ctsio, 7933 /*sks_valid*/ 1, 7934 /*command*/ 1, 7935 /*field*/ 2, 7936 /*bit_valid*/ 1, 7937 /*bit*/ 4); 7938 ctl_done((union ctl_io *)ctsio); 7939 return (CTL_RETVAL_COMPLETE); 7940 } 7941 7942 if (type>8 || type==2 || type==4 || type==0) { 7943 ctl_set_invalid_field(/*ctsio*/ ctsio, 7944 /*sks_valid*/ 1, 7945 /*command*/ 1, 7946 /*field*/ 2, 7947 /*bit_valid*/ 1, 7948 /*bit*/ 0); 7949 ctl_done((union ctl_io *)ctsio); 7950 return (CTL_RETVAL_COMPLETE); 7951 } 7952 } 7953 7954 switch (cdb->action & SPRO_ACTION_MASK) { 7955 case SPRO_REGISTER: 7956 case SPRO_RESERVE: 7957 case SPRO_RELEASE: 7958 case SPRO_CLEAR: 7959 case SPRO_PREEMPT: 7960 case SPRO_REG_IGNO: 7961 break; 7962 case SPRO_REG_MOVE: 7963 case SPRO_PRE_ABO: 7964 default: 7965 ctl_set_invalid_field(/*ctsio*/ ctsio, 7966 /*sks_valid*/ 1, 7967 /*command*/ 1, 7968 /*field*/ 1, 7969 /*bit_valid*/ 1, 7970 /*bit*/ 0); 7971 ctl_done((union ctl_io *)ctsio); 7972 return (CTL_RETVAL_COMPLETE); 7973 break; /* NOTREACHED */ 7974 } 7975 7976 param_len = scsi_4btoul(cdb->length); 7977 7978 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 7979 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 7980 ctsio->kern_data_len = param_len; 7981 ctsio->kern_total_len = param_len; 7982 ctsio->kern_data_resid = 0; 7983 ctsio->kern_rel_offset = 0; 7984 ctsio->kern_sg_entries = 0; 7985 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7986 ctsio->be_move_done = ctl_config_move_done; 7987 ctl_datamove((union ctl_io *)ctsio); 7988 7989 return (CTL_RETVAL_COMPLETE); 7990 } 7991 7992 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 7993 7994 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 7995 res_key = scsi_8btou64(param->res_key.key); 7996 sa_res_key = scsi_8btou64(param->serv_act_res_key); 7997 7998 /* 7999 * Validate the reservation key here except for SPRO_REG_IGNO 8000 * This must be done for all other service actions 8001 */ 8002 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8003 mtx_lock(&lun->lun_lock); 8004 if (lun->per_res[residx].registered) { 8005 if (memcmp(param->res_key.key, 8006 lun->per_res[residx].res_key.key, 8007 ctl_min(sizeof(param->res_key), 8008 sizeof(lun->per_res[residx].res_key))) != 0) { 8009 /* 8010 * The current key passed in doesn't match 8011 * the one the initiator previously 8012 * registered. 8013 */ 8014 mtx_unlock(&lun->lun_lock); 8015 free(ctsio->kern_data_ptr, M_CTL); 8016 ctl_set_reservation_conflict(ctsio); 8017 ctl_done((union ctl_io *)ctsio); 8018 return (CTL_RETVAL_COMPLETE); 8019 } 8020 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8021 /* 8022 * We are not registered 8023 */ 8024 mtx_unlock(&lun->lun_lock); 8025 free(ctsio->kern_data_ptr, M_CTL); 8026 ctl_set_reservation_conflict(ctsio); 8027 ctl_done((union ctl_io *)ctsio); 8028 return (CTL_RETVAL_COMPLETE); 8029 } else if (res_key != 0) { 8030 /* 8031 * We are not registered and trying to register but 8032 * the register key isn't zero. 8033 */ 8034 mtx_unlock(&lun->lun_lock); 8035 free(ctsio->kern_data_ptr, M_CTL); 8036 ctl_set_reservation_conflict(ctsio); 8037 ctl_done((union ctl_io *)ctsio); 8038 return (CTL_RETVAL_COMPLETE); 8039 } 8040 mtx_unlock(&lun->lun_lock); 8041 } 8042 8043 switch (cdb->action & SPRO_ACTION_MASK) { 8044 case SPRO_REGISTER: 8045 case SPRO_REG_IGNO: { 8046 8047#if 0 8048 printf("Registration received\n"); 8049#endif 8050 8051 /* 8052 * We don't support any of these options, as we report in 8053 * the read capabilities request (see 8054 * ctl_persistent_reserve_in(), above). 8055 */ 8056 if ((param->flags & SPR_SPEC_I_PT) 8057 || (param->flags & SPR_ALL_TG_PT) 8058 || (param->flags & SPR_APTPL)) { 8059 int bit_ptr; 8060 8061 if (param->flags & SPR_APTPL) 8062 bit_ptr = 0; 8063 else if (param->flags & SPR_ALL_TG_PT) 8064 bit_ptr = 2; 8065 else /* SPR_SPEC_I_PT */ 8066 bit_ptr = 3; 8067 8068 free(ctsio->kern_data_ptr, M_CTL); 8069 ctl_set_invalid_field(ctsio, 8070 /*sks_valid*/ 1, 8071 /*command*/ 0, 8072 /*field*/ 20, 8073 /*bit_valid*/ 1, 8074 /*bit*/ bit_ptr); 8075 ctl_done((union ctl_io *)ctsio); 8076 return (CTL_RETVAL_COMPLETE); 8077 } 8078 8079 mtx_lock(&lun->lun_lock); 8080 8081 /* 8082 * The initiator wants to clear the 8083 * key/unregister. 8084 */ 8085 if (sa_res_key == 0) { 8086 if ((res_key == 0 8087 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8088 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8089 && !lun->per_res[residx].registered)) { 8090 mtx_unlock(&lun->lun_lock); 8091 goto done; 8092 } 8093 8094 lun->per_res[residx].registered = 0; 8095 memset(&lun->per_res[residx].res_key, 8096 0, sizeof(lun->per_res[residx].res_key)); 8097 lun->pr_key_count--; 8098 8099 if (residx == lun->pr_res_idx) { 8100 lun->flags &= ~CTL_LUN_PR_RESERVED; 8101 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8102 8103 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8104 || lun->res_type == SPR_TYPE_EX_AC_RO) 8105 && lun->pr_key_count) { 8106 /* 8107 * If the reservation is a registrants 8108 * only type we need to generate a UA 8109 * for other registered inits. The 8110 * sense code should be RESERVATIONS 8111 * RELEASED 8112 */ 8113 8114 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8115 if (lun->per_res[ 8116 i+persis_offset].registered 8117 == 0) 8118 continue; 8119 lun->pending_sense[i 8120 ].ua_pending |= 8121 CTL_UA_RES_RELEASE; 8122 } 8123 } 8124 lun->res_type = 0; 8125 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8126 if (lun->pr_key_count==0) { 8127 lun->flags &= ~CTL_LUN_PR_RESERVED; 8128 lun->res_type = 0; 8129 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8130 } 8131 } 8132 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8133 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8134 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8135 persis_io.pr.pr_info.residx = residx; 8136 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8137 &persis_io, sizeof(persis_io), 0 )) > 8138 CTL_HA_STATUS_SUCCESS) { 8139 printf("CTL:Persis Out error returned from " 8140 "ctl_ha_msg_send %d\n", isc_retval); 8141 } 8142 } else /* sa_res_key != 0 */ { 8143 8144 /* 8145 * If we aren't registered currently then increment 8146 * the key count and set the registered flag. 8147 */ 8148 if (!lun->per_res[residx].registered) { 8149 lun->pr_key_count++; 8150 lun->per_res[residx].registered = 1; 8151 } 8152 8153 memcpy(&lun->per_res[residx].res_key, 8154 param->serv_act_res_key, 8155 ctl_min(sizeof(param->serv_act_res_key), 8156 sizeof(lun->per_res[residx].res_key))); 8157 8158 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8159 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8160 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8161 persis_io.pr.pr_info.residx = residx; 8162 memcpy(persis_io.pr.pr_info.sa_res_key, 8163 param->serv_act_res_key, 8164 sizeof(param->serv_act_res_key)); 8165 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8166 &persis_io, sizeof(persis_io), 0)) > 8167 CTL_HA_STATUS_SUCCESS) { 8168 printf("CTL:Persis Out error returned from " 8169 "ctl_ha_msg_send %d\n", isc_retval); 8170 } 8171 } 8172 lun->PRGeneration++; 8173 mtx_unlock(&lun->lun_lock); 8174 8175 break; 8176 } 8177 case SPRO_RESERVE: 8178#if 0 8179 printf("Reserve executed type %d\n", type); 8180#endif 8181 mtx_lock(&lun->lun_lock); 8182 if (lun->flags & CTL_LUN_PR_RESERVED) { 8183 /* 8184 * if this isn't the reservation holder and it's 8185 * not a "all registrants" type or if the type is 8186 * different then we have a conflict 8187 */ 8188 if ((lun->pr_res_idx != residx 8189 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8190 || lun->res_type != type) { 8191 mtx_unlock(&lun->lun_lock); 8192 free(ctsio->kern_data_ptr, M_CTL); 8193 ctl_set_reservation_conflict(ctsio); 8194 ctl_done((union ctl_io *)ctsio); 8195 return (CTL_RETVAL_COMPLETE); 8196 } 8197 mtx_unlock(&lun->lun_lock); 8198 } else /* create a reservation */ { 8199 /* 8200 * If it's not an "all registrants" type record 8201 * reservation holder 8202 */ 8203 if (type != SPR_TYPE_WR_EX_AR 8204 && type != SPR_TYPE_EX_AC_AR) 8205 lun->pr_res_idx = residx; /* Res holder */ 8206 else 8207 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8208 8209 lun->flags |= CTL_LUN_PR_RESERVED; 8210 lun->res_type = type; 8211 8212 mtx_unlock(&lun->lun_lock); 8213 8214 /* send msg to other side */ 8215 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8216 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8217 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8218 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8219 persis_io.pr.pr_info.res_type = type; 8220 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8221 &persis_io, sizeof(persis_io), 0)) > 8222 CTL_HA_STATUS_SUCCESS) { 8223 printf("CTL:Persis Out error returned from " 8224 "ctl_ha_msg_send %d\n", isc_retval); 8225 } 8226 } 8227 break; 8228 8229 case SPRO_RELEASE: 8230 mtx_lock(&lun->lun_lock); 8231 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8232 /* No reservation exists return good status */ 8233 mtx_unlock(&lun->lun_lock); 8234 goto done; 8235 } 8236 /* 8237 * Is this nexus a reservation holder? 8238 */ 8239 if (lun->pr_res_idx != residx 8240 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8241 /* 8242 * not a res holder return good status but 8243 * do nothing 8244 */ 8245 mtx_unlock(&lun->lun_lock); 8246 goto done; 8247 } 8248 8249 if (lun->res_type != type) { 8250 mtx_unlock(&lun->lun_lock); 8251 free(ctsio->kern_data_ptr, M_CTL); 8252 ctl_set_illegal_pr_release(ctsio); 8253 ctl_done((union ctl_io *)ctsio); 8254 return (CTL_RETVAL_COMPLETE); 8255 } 8256 8257 /* okay to release */ 8258 lun->flags &= ~CTL_LUN_PR_RESERVED; 8259 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8260 lun->res_type = 0; 8261 8262 /* 8263 * if this isn't an exclusive access 8264 * res generate UA for all other 8265 * registrants. 8266 */ 8267 if (type != SPR_TYPE_EX_AC 8268 && type != SPR_TYPE_WR_EX) { 8269 /* 8270 * temporarily unregister so we don't generate UA 8271 */ 8272 lun->per_res[residx].registered = 0; 8273 8274 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8275 if (lun->per_res[i+persis_offset].registered 8276 == 0) 8277 continue; 8278 lun->pending_sense[i].ua_pending |= 8279 CTL_UA_RES_RELEASE; 8280 } 8281 8282 lun->per_res[residx].registered = 1; 8283 } 8284 mtx_unlock(&lun->lun_lock); 8285 /* Send msg to other side */ 8286 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8287 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8288 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8289 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8290 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8291 printf("CTL:Persis Out error returned from " 8292 "ctl_ha_msg_send %d\n", isc_retval); 8293 } 8294 break; 8295 8296 case SPRO_CLEAR: 8297 /* send msg to other side */ 8298 8299 mtx_lock(&lun->lun_lock); 8300 lun->flags &= ~CTL_LUN_PR_RESERVED; 8301 lun->res_type = 0; 8302 lun->pr_key_count = 0; 8303 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8304 8305 8306 memset(&lun->per_res[residx].res_key, 8307 0, sizeof(lun->per_res[residx].res_key)); 8308 lun->per_res[residx].registered = 0; 8309 8310 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8311 if (lun->per_res[i].registered) { 8312 if (!persis_offset && i < CTL_MAX_INITIATORS) 8313 lun->pending_sense[i].ua_pending |= 8314 CTL_UA_RES_PREEMPT; 8315 else if (persis_offset && i >= persis_offset) 8316 lun->pending_sense[i-persis_offset 8317 ].ua_pending |= CTL_UA_RES_PREEMPT; 8318 8319 memset(&lun->per_res[i].res_key, 8320 0, sizeof(struct scsi_per_res_key)); 8321 lun->per_res[i].registered = 0; 8322 } 8323 lun->PRGeneration++; 8324 mtx_unlock(&lun->lun_lock); 8325 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8326 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8327 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8328 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8329 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8330 printf("CTL:Persis Out error returned from " 8331 "ctl_ha_msg_send %d\n", isc_retval); 8332 } 8333 break; 8334 8335 case SPRO_PREEMPT: { 8336 int nretval; 8337 8338 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8339 residx, ctsio, cdb, param); 8340 if (nretval != 0) 8341 return (CTL_RETVAL_COMPLETE); 8342 break; 8343 } 8344 case SPRO_REG_MOVE: 8345 case SPRO_PRE_ABO: 8346 default: 8347 free(ctsio->kern_data_ptr, M_CTL); 8348 ctl_set_invalid_field(/*ctsio*/ ctsio, 8349 /*sks_valid*/ 1, 8350 /*command*/ 1, 8351 /*field*/ 1, 8352 /*bit_valid*/ 1, 8353 /*bit*/ 0); 8354 ctl_done((union ctl_io *)ctsio); 8355 return (CTL_RETVAL_COMPLETE); 8356 break; /* NOTREACHED */ 8357 } 8358 8359done: 8360 free(ctsio->kern_data_ptr, M_CTL); 8361 ctl_set_success(ctsio); 8362 ctl_done((union ctl_io *)ctsio); 8363 8364 return (retval); 8365} 8366 8367/* 8368 * This routine is for handling a message from the other SC pertaining to 8369 * persistent reserve out. All the error checking will have been done 8370 * so only perorming the action need be done here to keep the two 8371 * in sync. 8372 */ 8373static void 8374ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8375{ 8376 struct ctl_lun *lun; 8377 struct ctl_softc *softc; 8378 int i; 8379 uint32_t targ_lun; 8380 8381 softc = control_softc; 8382 8383 targ_lun = msg->hdr.nexus.targ_mapped_lun; 8384 lun = softc->ctl_luns[targ_lun]; 8385 mtx_lock(&lun->lun_lock); 8386 switch(msg->pr.pr_info.action) { 8387 case CTL_PR_REG_KEY: 8388 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8389 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8390 lun->pr_key_count++; 8391 } 8392 lun->PRGeneration++; 8393 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8394 msg->pr.pr_info.sa_res_key, 8395 sizeof(struct scsi_per_res_key)); 8396 break; 8397 8398 case CTL_PR_UNREG_KEY: 8399 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8400 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8401 0, sizeof(struct scsi_per_res_key)); 8402 lun->pr_key_count--; 8403 8404 /* XXX Need to see if the reservation has been released */ 8405 /* if so do we need to generate UA? */ 8406 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8407 lun->flags &= ~CTL_LUN_PR_RESERVED; 8408 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8409 8410 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8411 || lun->res_type == SPR_TYPE_EX_AC_RO) 8412 && lun->pr_key_count) { 8413 /* 8414 * If the reservation is a registrants 8415 * only type we need to generate a UA 8416 * for other registered inits. The 8417 * sense code should be RESERVATIONS 8418 * RELEASED 8419 */ 8420 8421 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8422 if (lun->per_res[i+ 8423 persis_offset].registered == 0) 8424 continue; 8425 8426 lun->pending_sense[i 8427 ].ua_pending |= 8428 CTL_UA_RES_RELEASE; 8429 } 8430 } 8431 lun->res_type = 0; 8432 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8433 if (lun->pr_key_count==0) { 8434 lun->flags &= ~CTL_LUN_PR_RESERVED; 8435 lun->res_type = 0; 8436 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8437 } 8438 } 8439 lun->PRGeneration++; 8440 break; 8441 8442 case CTL_PR_RESERVE: 8443 lun->flags |= CTL_LUN_PR_RESERVED; 8444 lun->res_type = msg->pr.pr_info.res_type; 8445 lun->pr_res_idx = msg->pr.pr_info.residx; 8446 8447 break; 8448 8449 case CTL_PR_RELEASE: 8450 /* 8451 * if this isn't an exclusive access res generate UA for all 8452 * other registrants. 8453 */ 8454 if (lun->res_type != SPR_TYPE_EX_AC 8455 && lun->res_type != SPR_TYPE_WR_EX) { 8456 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8457 if (lun->per_res[i+persis_offset].registered) 8458 lun->pending_sense[i].ua_pending |= 8459 CTL_UA_RES_RELEASE; 8460 } 8461 8462 lun->flags &= ~CTL_LUN_PR_RESERVED; 8463 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8464 lun->res_type = 0; 8465 break; 8466 8467 case CTL_PR_PREEMPT: 8468 ctl_pro_preempt_other(lun, msg); 8469 break; 8470 case CTL_PR_CLEAR: 8471 lun->flags &= ~CTL_LUN_PR_RESERVED; 8472 lun->res_type = 0; 8473 lun->pr_key_count = 0; 8474 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8475 8476 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8477 if (lun->per_res[i].registered == 0) 8478 continue; 8479 if (!persis_offset 8480 && i < CTL_MAX_INITIATORS) 8481 lun->pending_sense[i].ua_pending |= 8482 CTL_UA_RES_PREEMPT; 8483 else if (persis_offset 8484 && i >= persis_offset) 8485 lun->pending_sense[i-persis_offset].ua_pending|= 8486 CTL_UA_RES_PREEMPT; 8487 memset(&lun->per_res[i].res_key, 0, 8488 sizeof(struct scsi_per_res_key)); 8489 lun->per_res[i].registered = 0; 8490 } 8491 lun->PRGeneration++; 8492 break; 8493 } 8494 8495 mtx_unlock(&lun->lun_lock); 8496} 8497 8498int 8499ctl_read_write(struct ctl_scsiio *ctsio) 8500{ 8501 struct ctl_lun *lun; 8502 struct ctl_lba_len_flags *lbalen; 8503 uint64_t lba; 8504 uint32_t num_blocks; 8505 int reladdr, fua, dpo, ebp; 8506 int retval; 8507 int isread; 8508 8509 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8510 8511 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8512 8513 reladdr = 0; 8514 fua = 0; 8515 dpo = 0; 8516 ebp = 0; 8517 8518 retval = CTL_RETVAL_COMPLETE; 8519 8520 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8521 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8522 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8523 uint32_t residx; 8524 8525 /* 8526 * XXX KDM need a lock here. 8527 */ 8528 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8529 if ((lun->res_type == SPR_TYPE_EX_AC 8530 && residx != lun->pr_res_idx) 8531 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8532 || lun->res_type == SPR_TYPE_EX_AC_AR) 8533 && !lun->per_res[residx].registered)) { 8534 ctl_set_reservation_conflict(ctsio); 8535 ctl_done((union ctl_io *)ctsio); 8536 return (CTL_RETVAL_COMPLETE); 8537 } 8538 } 8539 8540 switch (ctsio->cdb[0]) { 8541 case READ_6: 8542 case WRITE_6: { 8543 struct scsi_rw_6 *cdb; 8544 8545 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8546 8547 lba = scsi_3btoul(cdb->addr); 8548 /* only 5 bits are valid in the most significant address byte */ 8549 lba &= 0x1fffff; 8550 num_blocks = cdb->length; 8551 /* 8552 * This is correct according to SBC-2. 8553 */ 8554 if (num_blocks == 0) 8555 num_blocks = 256; 8556 break; 8557 } 8558 case READ_10: 8559 case WRITE_10: { 8560 struct scsi_rw_10 *cdb; 8561 8562 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8563 8564 if (cdb->byte2 & SRW10_RELADDR) 8565 reladdr = 1; 8566 if (cdb->byte2 & SRW10_FUA) 8567 fua = 1; 8568 if (cdb->byte2 & SRW10_DPO) 8569 dpo = 1; 8570 8571 if ((cdb->opcode == WRITE_10) 8572 && (cdb->byte2 & SRW10_EBP)) 8573 ebp = 1; 8574 8575 lba = scsi_4btoul(cdb->addr); 8576 num_blocks = scsi_2btoul(cdb->length); 8577 break; 8578 } 8579 case WRITE_VERIFY_10: { 8580 struct scsi_write_verify_10 *cdb; 8581 8582 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8583 8584 /* 8585 * XXX KDM we should do actual write verify support at some 8586 * point. This is obviously fake, we're just translating 8587 * things to a write. So we don't even bother checking the 8588 * BYTCHK field, since we don't do any verification. If 8589 * the user asks for it, we'll just pretend we did it. 8590 */ 8591 if (cdb->byte2 & SWV_DPO) 8592 dpo = 1; 8593 8594 lba = scsi_4btoul(cdb->addr); 8595 num_blocks = scsi_2btoul(cdb->length); 8596 break; 8597 } 8598 case READ_12: 8599 case WRITE_12: { 8600 struct scsi_rw_12 *cdb; 8601 8602 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8603 8604 if (cdb->byte2 & SRW12_RELADDR) 8605 reladdr = 1; 8606 if (cdb->byte2 & SRW12_FUA) 8607 fua = 1; 8608 if (cdb->byte2 & SRW12_DPO) 8609 dpo = 1; 8610 lba = scsi_4btoul(cdb->addr); 8611 num_blocks = scsi_4btoul(cdb->length); 8612 break; 8613 } 8614 case WRITE_VERIFY_12: { 8615 struct scsi_write_verify_12 *cdb; 8616 8617 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8618 8619 if (cdb->byte2 & SWV_DPO) 8620 dpo = 1; 8621 8622 lba = scsi_4btoul(cdb->addr); 8623 num_blocks = scsi_4btoul(cdb->length); 8624 8625 break; 8626 } 8627 case READ_16: 8628 case WRITE_16: { 8629 struct scsi_rw_16 *cdb; 8630 8631 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8632 8633 if (cdb->byte2 & SRW12_RELADDR) 8634 reladdr = 1; 8635 if (cdb->byte2 & SRW12_FUA) 8636 fua = 1; 8637 if (cdb->byte2 & SRW12_DPO) 8638 dpo = 1; 8639 8640 lba = scsi_8btou64(cdb->addr); 8641 num_blocks = scsi_4btoul(cdb->length); 8642 break; 8643 } 8644 case WRITE_VERIFY_16: { 8645 struct scsi_write_verify_16 *cdb; 8646 8647 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8648 8649 if (cdb->byte2 & SWV_DPO) 8650 dpo = 1; 8651 8652 lba = scsi_8btou64(cdb->addr); 8653 num_blocks = scsi_4btoul(cdb->length); 8654 break; 8655 } 8656 default: 8657 /* 8658 * We got a command we don't support. This shouldn't 8659 * happen, commands should be filtered out above us. 8660 */ 8661 ctl_set_invalid_opcode(ctsio); 8662 ctl_done((union ctl_io *)ctsio); 8663 8664 return (CTL_RETVAL_COMPLETE); 8665 break; /* NOTREACHED */ 8666 } 8667 8668 /* 8669 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8670 * interesting for us, but if RAIDCore is in write-back mode, 8671 * getting it to do write-through for a particular transaction may 8672 * not be possible. 8673 */ 8674 /* 8675 * We don't support relative addressing. That also requires 8676 * supporting linked commands, which we don't do. 8677 */ 8678 if (reladdr != 0) { 8679 ctl_set_invalid_field(ctsio, 8680 /*sks_valid*/ 1, 8681 /*command*/ 1, 8682 /*field*/ 1, 8683 /*bit_valid*/ 1, 8684 /*bit*/ 0); 8685 ctl_done((union ctl_io *)ctsio); 8686 return (CTL_RETVAL_COMPLETE); 8687 } 8688 8689 /* 8690 * The first check is to make sure we're in bounds, the second 8691 * check is to catch wrap-around problems. If the lba + num blocks 8692 * is less than the lba, then we've wrapped around and the block 8693 * range is invalid anyway. 8694 */ 8695 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8696 || ((lba + num_blocks) < lba)) { 8697 ctl_set_lba_out_of_range(ctsio); 8698 ctl_done((union ctl_io *)ctsio); 8699 return (CTL_RETVAL_COMPLETE); 8700 } 8701 8702 /* 8703 * According to SBC-3, a transfer length of 0 is not an error. 8704 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8705 * translates to 256 blocks for those commands. 8706 */ 8707 if (num_blocks == 0) { 8708 ctl_set_success(ctsio); 8709 ctl_done((union ctl_io *)ctsio); 8710 return (CTL_RETVAL_COMPLETE); 8711 } 8712 8713 lbalen = (struct ctl_lba_len_flags *) 8714 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8715 lbalen->lba = lba; 8716 lbalen->len = num_blocks; 8717 lbalen->flags = isread ? CTL_LLF_READ : CTL_LLF_WRITE; 8718 8719 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 8720 ctsio->kern_rel_offset = 0; 8721 8722 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8723 8724 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8725 8726 return (retval); 8727} 8728 8729static int 8730ctl_cnw_cont(union ctl_io *io) 8731{ 8732 struct ctl_scsiio *ctsio; 8733 struct ctl_lun *lun; 8734 struct ctl_lba_len_flags *lbalen; 8735 int retval; 8736 8737 ctsio = &io->scsiio; 8738 ctsio->io_hdr.status = CTL_STATUS_NONE; 8739 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_CONT; 8740 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8741 lbalen = (struct ctl_lba_len_flags *) 8742 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8743 lbalen->flags = CTL_LLF_WRITE; 8744 8745 CTL_DEBUG_PRINT(("ctl_cnw_cont: calling data_submit()\n")); 8746 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8747 return (retval); 8748} 8749 8750int 8751ctl_cnw(struct ctl_scsiio *ctsio) 8752{ 8753 struct ctl_lun *lun; 8754 struct ctl_lba_len_flags *lbalen; 8755 uint64_t lba; 8756 uint32_t num_blocks; 8757 int fua, dpo; 8758 int retval; 8759 8760 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8761 8762 CTL_DEBUG_PRINT(("ctl_cnw: command: %#x\n", ctsio->cdb[0])); 8763 8764 fua = 0; 8765 dpo = 0; 8766 8767 retval = CTL_RETVAL_COMPLETE; 8768 8769 switch (ctsio->cdb[0]) { 8770 case COMPARE_AND_WRITE: { 8771 struct scsi_compare_and_write *cdb; 8772 8773 cdb = (struct scsi_compare_and_write *)ctsio->cdb; 8774 8775 if (cdb->byte2 & SRW10_FUA) 8776 fua = 1; 8777 if (cdb->byte2 & SRW10_DPO) 8778 dpo = 1; 8779 lba = scsi_8btou64(cdb->addr); 8780 num_blocks = cdb->length; 8781 break; 8782 } 8783 default: 8784 /* 8785 * We got a command we don't support. This shouldn't 8786 * happen, commands should be filtered out above us. 8787 */ 8788 ctl_set_invalid_opcode(ctsio); 8789 ctl_done((union ctl_io *)ctsio); 8790 8791 return (CTL_RETVAL_COMPLETE); 8792 break; /* NOTREACHED */ 8793 } 8794 8795 /* 8796 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8797 * interesting for us, but if RAIDCore is in write-back mode, 8798 * getting it to do write-through for a particular transaction may 8799 * not be possible. 8800 */ 8801 8802 /* 8803 * The first check is to make sure we're in bounds, the second 8804 * check is to catch wrap-around problems. If the lba + num blocks 8805 * is less than the lba, then we've wrapped around and the block 8806 * range is invalid anyway. 8807 */ 8808 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8809 || ((lba + num_blocks) < lba)) { 8810 ctl_set_lba_out_of_range(ctsio); 8811 ctl_done((union ctl_io *)ctsio); 8812 return (CTL_RETVAL_COMPLETE); 8813 } 8814 8815 /* 8816 * According to SBC-3, a transfer length of 0 is not an error. 8817 */ 8818 if (num_blocks == 0) { 8819 ctl_set_success(ctsio); 8820 ctl_done((union ctl_io *)ctsio); 8821 return (CTL_RETVAL_COMPLETE); 8822 } 8823 8824 ctsio->kern_total_len = 2 * num_blocks * lun->be_lun->blocksize; 8825 ctsio->kern_rel_offset = 0; 8826 8827 /* 8828 * Set the IO_CONT flag, so that if this I/O gets passed to 8829 * ctl_data_submit_done(), it'll get passed back to 8830 * ctl_ctl_cnw_cont() for further processing. 8831 */ 8832 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 8833 ctsio->io_cont = ctl_cnw_cont; 8834 8835 lbalen = (struct ctl_lba_len_flags *) 8836 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8837 lbalen->lba = lba; 8838 lbalen->len = num_blocks; 8839 lbalen->flags = CTL_LLF_COMPARE; 8840 8841 CTL_DEBUG_PRINT(("ctl_cnw: calling data_submit()\n")); 8842 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8843 return (retval); 8844} 8845 8846int 8847ctl_verify(struct ctl_scsiio *ctsio) 8848{ 8849 struct ctl_lun *lun; 8850 struct ctl_lba_len_flags *lbalen; 8851 uint64_t lba; 8852 uint32_t num_blocks; 8853 int bytchk, dpo; 8854 int retval; 8855 8856 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8857 8858 CTL_DEBUG_PRINT(("ctl_verify: command: %#x\n", ctsio->cdb[0])); 8859 8860 bytchk = 0; 8861 dpo = 0; 8862 retval = CTL_RETVAL_COMPLETE; 8863 8864 switch (ctsio->cdb[0]) { 8865 case VERIFY_10: { 8866 struct scsi_verify_10 *cdb; 8867 8868 cdb = (struct scsi_verify_10 *)ctsio->cdb; 8869 if (cdb->byte2 & SVFY_BYTCHK) 8870 bytchk = 1; 8871 if (cdb->byte2 & SVFY_DPO) 8872 dpo = 1; 8873 lba = scsi_4btoul(cdb->addr); 8874 num_blocks = scsi_2btoul(cdb->length); 8875 break; 8876 } 8877 case VERIFY_12: { 8878 struct scsi_verify_12 *cdb; 8879 8880 cdb = (struct scsi_verify_12 *)ctsio->cdb; 8881 if (cdb->byte2 & SVFY_BYTCHK) 8882 bytchk = 1; 8883 if (cdb->byte2 & SVFY_DPO) 8884 dpo = 1; 8885 lba = scsi_4btoul(cdb->addr); 8886 num_blocks = scsi_4btoul(cdb->length); 8887 break; 8888 } 8889 case VERIFY_16: { 8890 struct scsi_rw_16 *cdb; 8891 8892 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8893 if (cdb->byte2 & SVFY_BYTCHK) 8894 bytchk = 1; 8895 if (cdb->byte2 & SVFY_DPO) 8896 dpo = 1; 8897 lba = scsi_8btou64(cdb->addr); 8898 num_blocks = scsi_4btoul(cdb->length); 8899 break; 8900 } 8901 default: 8902 /* 8903 * We got a command we don't support. This shouldn't 8904 * happen, commands should be filtered out above us. 8905 */ 8906 ctl_set_invalid_opcode(ctsio); 8907 ctl_done((union ctl_io *)ctsio); 8908 return (CTL_RETVAL_COMPLETE); 8909 } 8910 8911 /* 8912 * The first check is to make sure we're in bounds, the second 8913 * check is to catch wrap-around problems. If the lba + num blocks 8914 * is less than the lba, then we've wrapped around and the block 8915 * range is invalid anyway. 8916 */ 8917 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8918 || ((lba + num_blocks) < lba)) { 8919 ctl_set_lba_out_of_range(ctsio); 8920 ctl_done((union ctl_io *)ctsio); 8921 return (CTL_RETVAL_COMPLETE); 8922 } 8923 8924 /* 8925 * According to SBC-3, a transfer length of 0 is not an error. 8926 */ 8927 if (num_blocks == 0) { 8928 ctl_set_success(ctsio); 8929 ctl_done((union ctl_io *)ctsio); 8930 return (CTL_RETVAL_COMPLETE); 8931 } 8932 8933 lbalen = (struct ctl_lba_len_flags *) 8934 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8935 lbalen->lba = lba; 8936 lbalen->len = num_blocks; 8937 if (bytchk) { 8938 lbalen->flags = CTL_LLF_COMPARE; 8939 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 8940 } else { 8941 lbalen->flags = CTL_LLF_VERIFY; 8942 ctsio->kern_total_len = 0; 8943 } 8944 ctsio->kern_rel_offset = 0; 8945 8946 CTL_DEBUG_PRINT(("ctl_verify: calling data_submit()\n")); 8947 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8948 return (retval); 8949} 8950 8951int 8952ctl_report_luns(struct ctl_scsiio *ctsio) 8953{ 8954 struct scsi_report_luns *cdb; 8955 struct scsi_report_luns_data *lun_data; 8956 struct ctl_lun *lun, *request_lun; 8957 int num_luns, retval; 8958 uint32_t alloc_len, lun_datalen; 8959 int num_filled, well_known; 8960 uint32_t initidx, targ_lun_id, lun_id; 8961 8962 retval = CTL_RETVAL_COMPLETE; 8963 well_known = 0; 8964 8965 cdb = (struct scsi_report_luns *)ctsio->cdb; 8966 8967 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 8968 8969 mtx_lock(&control_softc->ctl_lock); 8970 num_luns = control_softc->num_luns; 8971 mtx_unlock(&control_softc->ctl_lock); 8972 8973 switch (cdb->select_report) { 8974 case RPL_REPORT_DEFAULT: 8975 case RPL_REPORT_ALL: 8976 break; 8977 case RPL_REPORT_WELLKNOWN: 8978 well_known = 1; 8979 num_luns = 0; 8980 break; 8981 default: 8982 ctl_set_invalid_field(ctsio, 8983 /*sks_valid*/ 1, 8984 /*command*/ 1, 8985 /*field*/ 2, 8986 /*bit_valid*/ 0, 8987 /*bit*/ 0); 8988 ctl_done((union ctl_io *)ctsio); 8989 return (retval); 8990 break; /* NOTREACHED */ 8991 } 8992 8993 alloc_len = scsi_4btoul(cdb->length); 8994 /* 8995 * The initiator has to allocate at least 16 bytes for this request, 8996 * so he can at least get the header and the first LUN. Otherwise 8997 * we reject the request (per SPC-3 rev 14, section 6.21). 8998 */ 8999 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 9000 sizeof(struct scsi_report_luns_lundata))) { 9001 ctl_set_invalid_field(ctsio, 9002 /*sks_valid*/ 1, 9003 /*command*/ 1, 9004 /*field*/ 6, 9005 /*bit_valid*/ 0, 9006 /*bit*/ 0); 9007 ctl_done((union ctl_io *)ctsio); 9008 return (retval); 9009 } 9010 9011 request_lun = (struct ctl_lun *) 9012 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9013 9014 lun_datalen = sizeof(*lun_data) + 9015 (num_luns * sizeof(struct scsi_report_luns_lundata)); 9016 9017 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 9018 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 9019 ctsio->kern_sg_entries = 0; 9020 9021 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9022 9023 mtx_lock(&control_softc->ctl_lock); 9024 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 9025 lun_id = targ_lun_id; 9026 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 9027 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 9028 if (lun_id >= CTL_MAX_LUNS) 9029 continue; 9030 lun = control_softc->ctl_luns[lun_id]; 9031 if (lun == NULL) 9032 continue; 9033 9034 if (targ_lun_id <= 0xff) { 9035 /* 9036 * Peripheral addressing method, bus number 0. 9037 */ 9038 lun_data->luns[num_filled].lundata[0] = 9039 RPL_LUNDATA_ATYP_PERIPH; 9040 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 9041 num_filled++; 9042 } else if (targ_lun_id <= 0x3fff) { 9043 /* 9044 * Flat addressing method. 9045 */ 9046 lun_data->luns[num_filled].lundata[0] = 9047 RPL_LUNDATA_ATYP_FLAT | 9048 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 9049#ifdef OLDCTLHEADERS 9050 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 9051 (targ_lun_id & SRLD_BUS_LUN_MASK); 9052#endif 9053 lun_data->luns[num_filled].lundata[1] = 9054#ifdef OLDCTLHEADERS 9055 targ_lun_id >> SRLD_BUS_LUN_BITS; 9056#endif 9057 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 9058 num_filled++; 9059 } else { 9060 printf("ctl_report_luns: bogus LUN number %jd, " 9061 "skipping\n", (intmax_t)targ_lun_id); 9062 } 9063 /* 9064 * According to SPC-3, rev 14 section 6.21: 9065 * 9066 * "The execution of a REPORT LUNS command to any valid and 9067 * installed logical unit shall clear the REPORTED LUNS DATA 9068 * HAS CHANGED unit attention condition for all logical 9069 * units of that target with respect to the requesting 9070 * initiator. A valid and installed logical unit is one 9071 * having a PERIPHERAL QUALIFIER of 000b in the standard 9072 * INQUIRY data (see 6.4.2)." 9073 * 9074 * If request_lun is NULL, the LUN this report luns command 9075 * was issued to is either disabled or doesn't exist. In that 9076 * case, we shouldn't clear any pending lun change unit 9077 * attention. 9078 */ 9079 if (request_lun != NULL) { 9080 mtx_lock(&lun->lun_lock); 9081 lun->pending_sense[initidx].ua_pending &= 9082 ~CTL_UA_LUN_CHANGE; 9083 mtx_unlock(&lun->lun_lock); 9084 } 9085 } 9086 mtx_unlock(&control_softc->ctl_lock); 9087 9088 /* 9089 * It's quite possible that we've returned fewer LUNs than we allocated 9090 * space for. Trim it. 9091 */ 9092 lun_datalen = sizeof(*lun_data) + 9093 (num_filled * sizeof(struct scsi_report_luns_lundata)); 9094 9095 if (lun_datalen < alloc_len) { 9096 ctsio->residual = alloc_len - lun_datalen; 9097 ctsio->kern_data_len = lun_datalen; 9098 ctsio->kern_total_len = lun_datalen; 9099 } else { 9100 ctsio->residual = 0; 9101 ctsio->kern_data_len = alloc_len; 9102 ctsio->kern_total_len = alloc_len; 9103 } 9104 ctsio->kern_data_resid = 0; 9105 ctsio->kern_rel_offset = 0; 9106 ctsio->kern_sg_entries = 0; 9107 9108 /* 9109 * We set this to the actual data length, regardless of how much 9110 * space we actually have to return results. If the user looks at 9111 * this value, he'll know whether or not he allocated enough space 9112 * and reissue the command if necessary. We don't support well 9113 * known logical units, so if the user asks for that, return none. 9114 */ 9115 scsi_ulto4b(lun_datalen - 8, lun_data->length); 9116 9117 /* 9118 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 9119 * this request. 9120 */ 9121 ctsio->scsi_status = SCSI_STATUS_OK; 9122 9123 ctsio->be_move_done = ctl_config_move_done; 9124 ctl_datamove((union ctl_io *)ctsio); 9125 9126 return (retval); 9127} 9128 9129int 9130ctl_request_sense(struct ctl_scsiio *ctsio) 9131{ 9132 struct scsi_request_sense *cdb; 9133 struct scsi_sense_data *sense_ptr; 9134 struct ctl_lun *lun; 9135 uint32_t initidx; 9136 int have_error; 9137 scsi_sense_data_type sense_format; 9138 9139 cdb = (struct scsi_request_sense *)ctsio->cdb; 9140 9141 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9142 9143 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9144 9145 /* 9146 * Determine which sense format the user wants. 9147 */ 9148 if (cdb->byte2 & SRS_DESC) 9149 sense_format = SSD_TYPE_DESC; 9150 else 9151 sense_format = SSD_TYPE_FIXED; 9152 9153 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9154 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9155 ctsio->kern_sg_entries = 0; 9156 9157 /* 9158 * struct scsi_sense_data, which is currently set to 256 bytes, is 9159 * larger than the largest allowed value for the length field in the 9160 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9161 */ 9162 ctsio->residual = 0; 9163 ctsio->kern_data_len = cdb->length; 9164 ctsio->kern_total_len = cdb->length; 9165 9166 ctsio->kern_data_resid = 0; 9167 ctsio->kern_rel_offset = 0; 9168 ctsio->kern_sg_entries = 0; 9169 9170 /* 9171 * If we don't have a LUN, we don't have any pending sense. 9172 */ 9173 if (lun == NULL) 9174 goto no_sense; 9175 9176 have_error = 0; 9177 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9178 /* 9179 * Check for pending sense, and then for pending unit attentions. 9180 * Pending sense gets returned first, then pending unit attentions. 9181 */ 9182 mtx_lock(&lun->lun_lock); 9183 if (ctl_is_set(lun->have_ca, initidx)) { 9184 scsi_sense_data_type stored_format; 9185 9186 /* 9187 * Check to see which sense format was used for the stored 9188 * sense data. 9189 */ 9190 stored_format = scsi_sense_type( 9191 &lun->pending_sense[initidx].sense); 9192 9193 /* 9194 * If the user requested a different sense format than the 9195 * one we stored, then we need to convert it to the other 9196 * format. If we're going from descriptor to fixed format 9197 * sense data, we may lose things in translation, depending 9198 * on what options were used. 9199 * 9200 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9201 * for some reason we'll just copy it out as-is. 9202 */ 9203 if ((stored_format == SSD_TYPE_FIXED) 9204 && (sense_format == SSD_TYPE_DESC)) 9205 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9206 &lun->pending_sense[initidx].sense, 9207 (struct scsi_sense_data_desc *)sense_ptr); 9208 else if ((stored_format == SSD_TYPE_DESC) 9209 && (sense_format == SSD_TYPE_FIXED)) 9210 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9211 &lun->pending_sense[initidx].sense, 9212 (struct scsi_sense_data_fixed *)sense_ptr); 9213 else 9214 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9215 ctl_min(sizeof(*sense_ptr), 9216 sizeof(lun->pending_sense[initidx].sense))); 9217 9218 ctl_clear_mask(lun->have_ca, initidx); 9219 have_error = 1; 9220 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9221 ctl_ua_type ua_type; 9222 9223 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9224 sense_ptr, sense_format); 9225 if (ua_type != CTL_UA_NONE) { 9226 have_error = 1; 9227 /* We're reporting this UA, so clear it */ 9228 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9229 } 9230 } 9231 mtx_unlock(&lun->lun_lock); 9232 9233 /* 9234 * We already have a pending error, return it. 9235 */ 9236 if (have_error != 0) { 9237 /* 9238 * We report the SCSI status as OK, since the status of the 9239 * request sense command itself is OK. 9240 */ 9241 ctsio->scsi_status = SCSI_STATUS_OK; 9242 9243 /* 9244 * We report 0 for the sense length, because we aren't doing 9245 * autosense in this case. We're reporting sense as 9246 * parameter data. 9247 */ 9248 ctsio->sense_len = 0; 9249 9250 ctsio->be_move_done = ctl_config_move_done; 9251 ctl_datamove((union ctl_io *)ctsio); 9252 9253 return (CTL_RETVAL_COMPLETE); 9254 } 9255 9256no_sense: 9257 9258 /* 9259 * No sense information to report, so we report that everything is 9260 * okay. 9261 */ 9262 ctl_set_sense_data(sense_ptr, 9263 lun, 9264 sense_format, 9265 /*current_error*/ 1, 9266 /*sense_key*/ SSD_KEY_NO_SENSE, 9267 /*asc*/ 0x00, 9268 /*ascq*/ 0x00, 9269 SSD_ELEM_NONE); 9270 9271 ctsio->scsi_status = SCSI_STATUS_OK; 9272 9273 /* 9274 * We report 0 for the sense length, because we aren't doing 9275 * autosense in this case. We're reporting sense as parameter data. 9276 */ 9277 ctsio->sense_len = 0; 9278 ctsio->be_move_done = ctl_config_move_done; 9279 ctl_datamove((union ctl_io *)ctsio); 9280 9281 return (CTL_RETVAL_COMPLETE); 9282} 9283 9284int 9285ctl_tur(struct ctl_scsiio *ctsio) 9286{ 9287 struct ctl_lun *lun; 9288 9289 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9290 9291 CTL_DEBUG_PRINT(("ctl_tur\n")); 9292 9293 if (lun == NULL) 9294 return (-EINVAL); 9295 9296 ctsio->scsi_status = SCSI_STATUS_OK; 9297 ctsio->io_hdr.status = CTL_SUCCESS; 9298 9299 ctl_done((union ctl_io *)ctsio); 9300 9301 return (CTL_RETVAL_COMPLETE); 9302} 9303 9304#ifdef notyet 9305static int 9306ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9307{ 9308 9309} 9310#endif 9311 9312static int 9313ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9314{ 9315 struct scsi_vpd_supported_pages *pages; 9316 int sup_page_size; 9317 struct ctl_lun *lun; 9318 9319 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9320 9321 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9322 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9323 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9324 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9325 ctsio->kern_sg_entries = 0; 9326 9327 if (sup_page_size < alloc_len) { 9328 ctsio->residual = alloc_len - sup_page_size; 9329 ctsio->kern_data_len = sup_page_size; 9330 ctsio->kern_total_len = sup_page_size; 9331 } else { 9332 ctsio->residual = 0; 9333 ctsio->kern_data_len = alloc_len; 9334 ctsio->kern_total_len = alloc_len; 9335 } 9336 ctsio->kern_data_resid = 0; 9337 ctsio->kern_rel_offset = 0; 9338 ctsio->kern_sg_entries = 0; 9339 9340 /* 9341 * The control device is always connected. The disk device, on the 9342 * other hand, may not be online all the time. Need to change this 9343 * to figure out whether the disk device is actually online or not. 9344 */ 9345 if (lun != NULL) 9346 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9347 lun->be_lun->lun_type; 9348 else 9349 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9350 9351 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9352 /* Supported VPD pages */ 9353 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9354 /* Serial Number */ 9355 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9356 /* Device Identification */ 9357 pages->page_list[2] = SVPD_DEVICE_ID; 9358 /* Block limits */ 9359 pages->page_list[3] = SVPD_BLOCK_LIMITS; 9360 /* Logical Block Provisioning */ 9361 pages->page_list[4] = SVPD_LBP; 9362 9363 ctsio->scsi_status = SCSI_STATUS_OK; 9364 9365 ctsio->be_move_done = ctl_config_move_done; 9366 ctl_datamove((union ctl_io *)ctsio); 9367 9368 return (CTL_RETVAL_COMPLETE); 9369} 9370 9371static int 9372ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9373{ 9374 struct scsi_vpd_unit_serial_number *sn_ptr; 9375 struct ctl_lun *lun; 9376 9377 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9378 9379 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9380 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9381 ctsio->kern_sg_entries = 0; 9382 9383 if (sizeof(*sn_ptr) < alloc_len) { 9384 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9385 ctsio->kern_data_len = sizeof(*sn_ptr); 9386 ctsio->kern_total_len = sizeof(*sn_ptr); 9387 } else { 9388 ctsio->residual = 0; 9389 ctsio->kern_data_len = alloc_len; 9390 ctsio->kern_total_len = alloc_len; 9391 } 9392 ctsio->kern_data_resid = 0; 9393 ctsio->kern_rel_offset = 0; 9394 ctsio->kern_sg_entries = 0; 9395 9396 /* 9397 * The control device is always connected. The disk device, on the 9398 * other hand, may not be online all the time. Need to change this 9399 * to figure out whether the disk device is actually online or not. 9400 */ 9401 if (lun != NULL) 9402 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9403 lun->be_lun->lun_type; 9404 else 9405 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9406 9407 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9408 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9409 /* 9410 * If we don't have a LUN, we just leave the serial number as 9411 * all spaces. 9412 */ 9413 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9414 if (lun != NULL) { 9415 strncpy((char *)sn_ptr->serial_num, 9416 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9417 } 9418 ctsio->scsi_status = SCSI_STATUS_OK; 9419 9420 ctsio->be_move_done = ctl_config_move_done; 9421 ctl_datamove((union ctl_io *)ctsio); 9422 9423 return (CTL_RETVAL_COMPLETE); 9424} 9425 9426 9427static int 9428ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9429{ 9430 struct scsi_vpd_device_id *devid_ptr; 9431 struct scsi_vpd_id_descriptor *desc, *desc1; 9432 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9433 struct scsi_vpd_id_t10 *t10id; 9434 struct ctl_softc *ctl_softc; 9435 struct ctl_lun *lun; 9436 struct ctl_frontend *fe; 9437 char *val; 9438 int data_len, devid_len; 9439 9440 ctl_softc = control_softc; 9441 9442 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9443 9444 if (fe->devid != NULL) 9445 return ((fe->devid)(ctsio, alloc_len)); 9446 9447 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9448 9449 if (lun == NULL) { 9450 devid_len = CTL_DEVID_MIN_LEN; 9451 } else { 9452 devid_len = max(CTL_DEVID_MIN_LEN, 9453 strnlen(lun->be_lun->device_id, CTL_DEVID_LEN)); 9454 } 9455 9456 data_len = sizeof(struct scsi_vpd_device_id) + 9457 sizeof(struct scsi_vpd_id_descriptor) + 9458 sizeof(struct scsi_vpd_id_t10) + devid_len + 9459 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9460 sizeof(struct scsi_vpd_id_descriptor) + 9461 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9462 sizeof(struct scsi_vpd_id_descriptor) + 9463 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9464 9465 ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO); 9466 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9467 ctsio->kern_sg_entries = 0; 9468 9469 if (data_len < alloc_len) { 9470 ctsio->residual = alloc_len - data_len; 9471 ctsio->kern_data_len = data_len; 9472 ctsio->kern_total_len = data_len; 9473 } else { 9474 ctsio->residual = 0; 9475 ctsio->kern_data_len = alloc_len; 9476 ctsio->kern_total_len = alloc_len; 9477 } 9478 ctsio->kern_data_resid = 0; 9479 ctsio->kern_rel_offset = 0; 9480 ctsio->kern_sg_entries = 0; 9481 9482 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9483 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9484 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9485 sizeof(struct scsi_vpd_id_t10) + devid_len); 9486 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9487 CTL_WWPN_LEN); 9488 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9489 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9490 9491 /* 9492 * The control device is always connected. The disk device, on the 9493 * other hand, may not be online all the time. 9494 */ 9495 if (lun != NULL) 9496 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9497 lun->be_lun->lun_type; 9498 else 9499 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9500 9501 devid_ptr->page_code = SVPD_DEVICE_ID; 9502 9503 scsi_ulto2b(data_len - 4, devid_ptr->length); 9504 9505 /* 9506 * For Fibre channel, 9507 */ 9508 if (fe->port_type == CTL_PORT_FC) 9509 { 9510 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9511 SVPD_ID_CODESET_ASCII; 9512 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9513 SVPD_ID_CODESET_BINARY; 9514 } 9515 else 9516 { 9517 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9518 SVPD_ID_CODESET_ASCII; 9519 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9520 SVPD_ID_CODESET_BINARY; 9521 } 9522 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9523 9524 /* 9525 * We're using a LUN association here. i.e., this device ID is a 9526 * per-LUN identifier. 9527 */ 9528 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9529 desc->length = sizeof(*t10id) + devid_len; 9530 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 9531 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9532 } else { 9533 memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 9534 strncpy(t10id->vendor, val, 9535 min(sizeof(t10id->vendor), strlen(val))); 9536 } 9537 9538 /* 9539 * desc1 is for the WWPN which is a port asscociation. 9540 */ 9541 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9542 desc1->length = CTL_WWPN_LEN; 9543 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9544 /* For testing just create the WWPN */ 9545#if 0 9546 ddb_GetWWNN((char *)desc1->identifier); 9547 9548 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9549 /* This is so Copancontrol will return something sane */ 9550 if (ctsio->io_hdr.nexus.targ_port!=0 && 9551 ctsio->io_hdr.nexus.targ_port!=8) 9552 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9553 else 9554 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9555#endif 9556 9557 be64enc(desc1->identifier, fe->wwpn); 9558 9559 /* 9560 * desc2 is for the Relative Target Port(type 4h) identifier 9561 */ 9562 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9563 | SVPD_ID_TYPE_RELTARG; 9564 desc2->length = 4; 9565//#if 0 9566 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9567 /* This is so Copancontrol will return something sane */ 9568 if (ctsio->io_hdr.nexus.targ_port!=0 && 9569 ctsio->io_hdr.nexus.targ_port!=8) 9570 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9571 else 9572 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9573//#endif 9574 9575 /* 9576 * desc3 is for the Target Port Group(type 5h) identifier 9577 */ 9578 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9579 | SVPD_ID_TYPE_TPORTGRP; 9580 desc3->length = 4; 9581 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9582 desc3->identifier[3] = 1; 9583 else 9584 desc3->identifier[3] = 2; 9585 9586 /* 9587 * If we've actually got a backend, copy the device id from the 9588 * per-LUN data. Otherwise, set it to all spaces. 9589 */ 9590 if (lun != NULL) { 9591 /* 9592 * Copy the backend's LUN ID. 9593 */ 9594 strncpy((char *)t10id->vendor_spec_id, 9595 (char *)lun->be_lun->device_id, devid_len); 9596 } else { 9597 /* 9598 * No backend, set this to spaces. 9599 */ 9600 memset(t10id->vendor_spec_id, 0x20, devid_len); 9601 } 9602 9603 ctsio->scsi_status = SCSI_STATUS_OK; 9604 9605 ctsio->be_move_done = ctl_config_move_done; 9606 ctl_datamove((union ctl_io *)ctsio); 9607 9608 return (CTL_RETVAL_COMPLETE); 9609} 9610 9611static int 9612ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9613{ 9614 struct scsi_vpd_block_limits *bl_ptr; 9615 struct ctl_lun *lun; 9616 int bs; 9617 9618 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9619 bs = lun->be_lun->blocksize; 9620 9621 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9622 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9623 ctsio->kern_sg_entries = 0; 9624 9625 if (sizeof(*bl_ptr) < alloc_len) { 9626 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9627 ctsio->kern_data_len = sizeof(*bl_ptr); 9628 ctsio->kern_total_len = sizeof(*bl_ptr); 9629 } else { 9630 ctsio->residual = 0; 9631 ctsio->kern_data_len = alloc_len; 9632 ctsio->kern_total_len = alloc_len; 9633 } 9634 ctsio->kern_data_resid = 0; 9635 ctsio->kern_rel_offset = 0; 9636 ctsio->kern_sg_entries = 0; 9637 9638 /* 9639 * The control device is always connected. The disk device, on the 9640 * other hand, may not be online all the time. Need to change this 9641 * to figure out whether the disk device is actually online or not. 9642 */ 9643 if (lun != NULL) 9644 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9645 lun->be_lun->lun_type; 9646 else 9647 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9648 9649 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9650 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9651 bl_ptr->max_cmp_write_len = 0xff; 9652 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9653 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9654 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9655 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9656 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9657 } 9658 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9659 9660 ctsio->scsi_status = SCSI_STATUS_OK; 9661 ctsio->be_move_done = ctl_config_move_done; 9662 ctl_datamove((union ctl_io *)ctsio); 9663 9664 return (CTL_RETVAL_COMPLETE); 9665} 9666 9667static int 9668ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 9669{ 9670 struct scsi_vpd_logical_block_prov *lbp_ptr; 9671 struct ctl_lun *lun; 9672 int bs; 9673 9674 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9675 bs = lun->be_lun->blocksize; 9676 9677 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 9678 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 9679 ctsio->kern_sg_entries = 0; 9680 9681 if (sizeof(*lbp_ptr) < alloc_len) { 9682 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 9683 ctsio->kern_data_len = sizeof(*lbp_ptr); 9684 ctsio->kern_total_len = sizeof(*lbp_ptr); 9685 } else { 9686 ctsio->residual = 0; 9687 ctsio->kern_data_len = alloc_len; 9688 ctsio->kern_total_len = alloc_len; 9689 } 9690 ctsio->kern_data_resid = 0; 9691 ctsio->kern_rel_offset = 0; 9692 ctsio->kern_sg_entries = 0; 9693 9694 /* 9695 * The control device is always connected. The disk device, on the 9696 * other hand, may not be online all the time. Need to change this 9697 * to figure out whether the disk device is actually online or not. 9698 */ 9699 if (lun != NULL) 9700 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9701 lun->be_lun->lun_type; 9702 else 9703 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9704 9705 lbp_ptr->page_code = SVPD_LBP; 9706 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 9707 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 9708 9709 ctsio->scsi_status = SCSI_STATUS_OK; 9710 ctsio->be_move_done = ctl_config_move_done; 9711 ctl_datamove((union ctl_io *)ctsio); 9712 9713 return (CTL_RETVAL_COMPLETE); 9714} 9715 9716static int 9717ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9718{ 9719 struct scsi_inquiry *cdb; 9720 struct ctl_lun *lun; 9721 int alloc_len, retval; 9722 9723 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9724 cdb = (struct scsi_inquiry *)ctsio->cdb; 9725 9726 retval = CTL_RETVAL_COMPLETE; 9727 9728 alloc_len = scsi_2btoul(cdb->length); 9729 9730 switch (cdb->page_code) { 9731 case SVPD_SUPPORTED_PAGES: 9732 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9733 break; 9734 case SVPD_UNIT_SERIAL_NUMBER: 9735 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9736 break; 9737 case SVPD_DEVICE_ID: 9738 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9739 break; 9740 case SVPD_BLOCK_LIMITS: 9741 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 9742 break; 9743 case SVPD_LBP: 9744 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 9745 break; 9746 default: 9747 ctl_set_invalid_field(ctsio, 9748 /*sks_valid*/ 1, 9749 /*command*/ 1, 9750 /*field*/ 2, 9751 /*bit_valid*/ 0, 9752 /*bit*/ 0); 9753 ctl_done((union ctl_io *)ctsio); 9754 retval = CTL_RETVAL_COMPLETE; 9755 break; 9756 } 9757 9758 return (retval); 9759} 9760 9761static int 9762ctl_inquiry_std(struct ctl_scsiio *ctsio) 9763{ 9764 struct scsi_inquiry_data *inq_ptr; 9765 struct scsi_inquiry *cdb; 9766 struct ctl_softc *ctl_softc; 9767 struct ctl_lun *lun; 9768 char *val; 9769 uint32_t alloc_len; 9770 int is_fc; 9771 9772 ctl_softc = control_softc; 9773 9774 /* 9775 * Figure out whether we're talking to a Fibre Channel port or not. 9776 * We treat the ioctl front end, and any SCSI adapters, as packetized 9777 * SCSI front ends. 9778 */ 9779 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9780 CTL_PORT_FC) 9781 is_fc = 0; 9782 else 9783 is_fc = 1; 9784 9785 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9786 cdb = (struct scsi_inquiry *)ctsio->cdb; 9787 alloc_len = scsi_2btoul(cdb->length); 9788 9789 /* 9790 * We malloc the full inquiry data size here and fill it 9791 * in. If the user only asks for less, we'll give him 9792 * that much. 9793 */ 9794 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9795 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9796 ctsio->kern_sg_entries = 0; 9797 ctsio->kern_data_resid = 0; 9798 ctsio->kern_rel_offset = 0; 9799 9800 if (sizeof(*inq_ptr) < alloc_len) { 9801 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9802 ctsio->kern_data_len = sizeof(*inq_ptr); 9803 ctsio->kern_total_len = sizeof(*inq_ptr); 9804 } else { 9805 ctsio->residual = 0; 9806 ctsio->kern_data_len = alloc_len; 9807 ctsio->kern_total_len = alloc_len; 9808 } 9809 9810 /* 9811 * If we have a LUN configured, report it as connected. Otherwise, 9812 * report that it is offline or no device is supported, depending 9813 * on the value of inquiry_pq_no_lun. 9814 * 9815 * According to the spec (SPC-4 r34), the peripheral qualifier 9816 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9817 * 9818 * "A peripheral device having the specified peripheral device type 9819 * is not connected to this logical unit. However, the device 9820 * server is capable of supporting the specified peripheral device 9821 * type on this logical unit." 9822 * 9823 * According to the same spec, the peripheral qualifier 9824 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9825 * 9826 * "The device server is not capable of supporting a peripheral 9827 * device on this logical unit. For this peripheral qualifier the 9828 * peripheral device type shall be set to 1Fh. All other peripheral 9829 * device type values are reserved for this peripheral qualifier." 9830 * 9831 * Given the text, it would seem that we probably want to report that 9832 * the LUN is offline here. There is no LUN connected, but we can 9833 * support a LUN at the given LUN number. 9834 * 9835 * In the real world, though, it sounds like things are a little 9836 * different: 9837 * 9838 * - Linux, when presented with a LUN with the offline peripheral 9839 * qualifier, will create an sg driver instance for it. So when 9840 * you attach it to CTL, you wind up with a ton of sg driver 9841 * instances. (One for every LUN that Linux bothered to probe.) 9842 * Linux does this despite the fact that it issues a REPORT LUNs 9843 * to LUN 0 to get the inventory of supported LUNs. 9844 * 9845 * - There is other anecdotal evidence (from Emulex folks) about 9846 * arrays that use the offline peripheral qualifier for LUNs that 9847 * are on the "passive" path in an active/passive array. 9848 * 9849 * So the solution is provide a hopefully reasonable default 9850 * (return bad/no LUN) and allow the user to change the behavior 9851 * with a tunable/sysctl variable. 9852 */ 9853 if (lun != NULL) 9854 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9855 lun->be_lun->lun_type; 9856 else if (ctl_softc->inquiry_pq_no_lun == 0) 9857 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9858 else 9859 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9860 9861 /* RMB in byte 2 is 0 */ 9862 inq_ptr->version = SCSI_REV_SPC3; 9863 9864 /* 9865 * According to SAM-3, even if a device only supports a single 9866 * level of LUN addressing, it should still set the HISUP bit: 9867 * 9868 * 4.9.1 Logical unit numbers overview 9869 * 9870 * All logical unit number formats described in this standard are 9871 * hierarchical in structure even when only a single level in that 9872 * hierarchy is used. The HISUP bit shall be set to one in the 9873 * standard INQUIRY data (see SPC-2) when any logical unit number 9874 * format described in this standard is used. Non-hierarchical 9875 * formats are outside the scope of this standard. 9876 * 9877 * Therefore we set the HiSup bit here. 9878 * 9879 * The reponse format is 2, per SPC-3. 9880 */ 9881 inq_ptr->response_format = SID_HiSup | 2; 9882 9883 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9884 CTL_DEBUG_PRINT(("additional_length = %d\n", 9885 inq_ptr->additional_length)); 9886 9887 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9888 /* 16 bit addressing */ 9889 if (is_fc == 0) 9890 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9891 /* XXX set the SID_MultiP bit here if we're actually going to 9892 respond on multiple ports */ 9893 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9894 9895 /* 16 bit data bus, synchronous transfers */ 9896 /* XXX these flags don't apply for FC */ 9897 if (is_fc == 0) 9898 inq_ptr->flags = SID_WBus16 | SID_Sync; 9899 /* 9900 * XXX KDM do we want to support tagged queueing on the control 9901 * device at all? 9902 */ 9903 if ((lun == NULL) 9904 || (lun->be_lun->lun_type != T_PROCESSOR)) 9905 inq_ptr->flags |= SID_CmdQue; 9906 /* 9907 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 9908 * We have 8 bytes for the vendor name, and 16 bytes for the device 9909 * name and 4 bytes for the revision. 9910 */ 9911 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 9912 strcpy(inq_ptr->vendor, CTL_VENDOR); 9913 } else { 9914 memset(inq_ptr->vendor, ' ', sizeof(inq_ptr->vendor)); 9915 strncpy(inq_ptr->vendor, val, 9916 min(sizeof(inq_ptr->vendor), strlen(val))); 9917 } 9918 if (lun == NULL) { 9919 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9920 } else if ((val = ctl_get_opt(lun->be_lun, "product")) == NULL) { 9921 switch (lun->be_lun->lun_type) { 9922 case T_DIRECT: 9923 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 9924 break; 9925 case T_PROCESSOR: 9926 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 9927 break; 9928 default: 9929 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 9930 break; 9931 } 9932 } else { 9933 memset(inq_ptr->product, ' ', sizeof(inq_ptr->product)); 9934 strncpy(inq_ptr->product, val, 9935 min(sizeof(inq_ptr->product), strlen(val))); 9936 } 9937 9938 /* 9939 * XXX make this a macro somewhere so it automatically gets 9940 * incremented when we make changes. 9941 */ 9942 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "revision")) == NULL) { 9943 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 9944 } else { 9945 memset(inq_ptr->revision, ' ', sizeof(inq_ptr->revision)); 9946 strncpy(inq_ptr->revision, val, 9947 min(sizeof(inq_ptr->revision), strlen(val))); 9948 } 9949 9950 /* 9951 * For parallel SCSI, we support double transition and single 9952 * transition clocking. We also support QAS (Quick Arbitration 9953 * and Selection) and Information Unit transfers on both the 9954 * control and array devices. 9955 */ 9956 if (is_fc == 0) 9957 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 9958 SID_SPI_IUS; 9959 9960 /* SAM-3 */ 9961 scsi_ulto2b(0x0060, inq_ptr->version1); 9962 /* SPC-3 (no version claimed) XXX should we claim a version? */ 9963 scsi_ulto2b(0x0300, inq_ptr->version2); 9964 if (is_fc) { 9965 /* FCP-2 ANSI INCITS.350:2003 */ 9966 scsi_ulto2b(0x0917, inq_ptr->version3); 9967 } else { 9968 /* SPI-4 ANSI INCITS.362:200x */ 9969 scsi_ulto2b(0x0B56, inq_ptr->version3); 9970 } 9971 9972 if (lun == NULL) { 9973 /* SBC-2 (no version claimed) XXX should we claim a version? */ 9974 scsi_ulto2b(0x0320, inq_ptr->version4); 9975 } else { 9976 switch (lun->be_lun->lun_type) { 9977 case T_DIRECT: 9978 /* 9979 * SBC-2 (no version claimed) XXX should we claim a 9980 * version? 9981 */ 9982 scsi_ulto2b(0x0320, inq_ptr->version4); 9983 break; 9984 case T_PROCESSOR: 9985 default: 9986 break; 9987 } 9988 } 9989 9990 ctsio->scsi_status = SCSI_STATUS_OK; 9991 if (ctsio->kern_data_len > 0) { 9992 ctsio->be_move_done = ctl_config_move_done; 9993 ctl_datamove((union ctl_io *)ctsio); 9994 } else { 9995 ctsio->io_hdr.status = CTL_SUCCESS; 9996 ctl_done((union ctl_io *)ctsio); 9997 } 9998 9999 return (CTL_RETVAL_COMPLETE); 10000} 10001 10002int 10003ctl_inquiry(struct ctl_scsiio *ctsio) 10004{ 10005 struct scsi_inquiry *cdb; 10006 int retval; 10007 10008 cdb = (struct scsi_inquiry *)ctsio->cdb; 10009 10010 retval = 0; 10011 10012 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 10013 10014 /* 10015 * Right now, we don't support the CmdDt inquiry information. 10016 * This would be nice to support in the future. When we do 10017 * support it, we should change this test so that it checks to make 10018 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 10019 */ 10020#ifdef notyet 10021 if (((cdb->byte2 & SI_EVPD) 10022 && (cdb->byte2 & SI_CMDDT))) 10023#endif 10024 if (cdb->byte2 & SI_CMDDT) { 10025 /* 10026 * Point to the SI_CMDDT bit. We might change this 10027 * when we support SI_CMDDT, but since both bits would be 10028 * "wrong", this should probably just stay as-is then. 10029 */ 10030 ctl_set_invalid_field(ctsio, 10031 /*sks_valid*/ 1, 10032 /*command*/ 1, 10033 /*field*/ 1, 10034 /*bit_valid*/ 1, 10035 /*bit*/ 1); 10036 ctl_done((union ctl_io *)ctsio); 10037 return (CTL_RETVAL_COMPLETE); 10038 } 10039 if (cdb->byte2 & SI_EVPD) 10040 retval = ctl_inquiry_evpd(ctsio); 10041#ifdef notyet 10042 else if (cdb->byte2 & SI_CMDDT) 10043 retval = ctl_inquiry_cmddt(ctsio); 10044#endif 10045 else 10046 retval = ctl_inquiry_std(ctsio); 10047 10048 return (retval); 10049} 10050 10051/* 10052 * For known CDB types, parse the LBA and length. 10053 */ 10054static int 10055ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 10056{ 10057 if (io->io_hdr.io_type != CTL_IO_SCSI) 10058 return (1); 10059 10060 switch (io->scsiio.cdb[0]) { 10061 case COMPARE_AND_WRITE: { 10062 struct scsi_compare_and_write *cdb; 10063 10064 cdb = (struct scsi_compare_and_write *)io->scsiio.cdb; 10065 10066 *lba = scsi_8btou64(cdb->addr); 10067 *len = cdb->length; 10068 break; 10069 } 10070 case READ_6: 10071 case WRITE_6: { 10072 struct scsi_rw_6 *cdb; 10073 10074 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 10075 10076 *lba = scsi_3btoul(cdb->addr); 10077 /* only 5 bits are valid in the most significant address byte */ 10078 *lba &= 0x1fffff; 10079 *len = cdb->length; 10080 break; 10081 } 10082 case READ_10: 10083 case WRITE_10: { 10084 struct scsi_rw_10 *cdb; 10085 10086 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 10087 10088 *lba = scsi_4btoul(cdb->addr); 10089 *len = scsi_2btoul(cdb->length); 10090 break; 10091 } 10092 case WRITE_VERIFY_10: { 10093 struct scsi_write_verify_10 *cdb; 10094 10095 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 10096 10097 *lba = scsi_4btoul(cdb->addr); 10098 *len = scsi_2btoul(cdb->length); 10099 break; 10100 } 10101 case READ_12: 10102 case WRITE_12: { 10103 struct scsi_rw_12 *cdb; 10104 10105 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 10106 10107 *lba = scsi_4btoul(cdb->addr); 10108 *len = scsi_4btoul(cdb->length); 10109 break; 10110 } 10111 case WRITE_VERIFY_12: { 10112 struct scsi_write_verify_12 *cdb; 10113 10114 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 10115 10116 *lba = scsi_4btoul(cdb->addr); 10117 *len = scsi_4btoul(cdb->length); 10118 break; 10119 } 10120 case READ_16: 10121 case WRITE_16: { 10122 struct scsi_rw_16 *cdb; 10123 10124 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 10125 10126 *lba = scsi_8btou64(cdb->addr); 10127 *len = scsi_4btoul(cdb->length); 10128 break; 10129 } 10130 case WRITE_VERIFY_16: { 10131 struct scsi_write_verify_16 *cdb; 10132 10133 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 10134 10135 10136 *lba = scsi_8btou64(cdb->addr); 10137 *len = scsi_4btoul(cdb->length); 10138 break; 10139 } 10140 case WRITE_SAME_10: { 10141 struct scsi_write_same_10 *cdb; 10142 10143 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 10144 10145 *lba = scsi_4btoul(cdb->addr); 10146 *len = scsi_2btoul(cdb->length); 10147 break; 10148 } 10149 case WRITE_SAME_16: { 10150 struct scsi_write_same_16 *cdb; 10151 10152 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 10153 10154 *lba = scsi_8btou64(cdb->addr); 10155 *len = scsi_4btoul(cdb->length); 10156 break; 10157 } 10158 case VERIFY_10: { 10159 struct scsi_verify_10 *cdb; 10160 10161 cdb = (struct scsi_verify_10 *)io->scsiio.cdb; 10162 10163 *lba = scsi_4btoul(cdb->addr); 10164 *len = scsi_2btoul(cdb->length); 10165 break; 10166 } 10167 case VERIFY_12: { 10168 struct scsi_verify_12 *cdb; 10169 10170 cdb = (struct scsi_verify_12 *)io->scsiio.cdb; 10171 10172 *lba = scsi_4btoul(cdb->addr); 10173 *len = scsi_4btoul(cdb->length); 10174 break; 10175 } 10176 case VERIFY_16: { 10177 struct scsi_verify_16 *cdb; 10178 10179 cdb = (struct scsi_verify_16 *)io->scsiio.cdb; 10180 10181 *lba = scsi_8btou64(cdb->addr); 10182 *len = scsi_4btoul(cdb->length); 10183 break; 10184 } 10185 default: 10186 return (1); 10187 break; /* NOTREACHED */ 10188 } 10189 10190 return (0); 10191} 10192 10193static ctl_action 10194ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10195{ 10196 uint64_t endlba1, endlba2; 10197 10198 endlba1 = lba1 + len1 - 1; 10199 endlba2 = lba2 + len2 - 1; 10200 10201 if ((endlba1 < lba2) 10202 || (endlba2 < lba1)) 10203 return (CTL_ACTION_PASS); 10204 else 10205 return (CTL_ACTION_BLOCK); 10206} 10207 10208static ctl_action 10209ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10210{ 10211 uint64_t lba1, lba2; 10212 uint32_t len1, len2; 10213 int retval; 10214 10215 retval = ctl_get_lba_len(io1, &lba1, &len1); 10216 if (retval != 0) 10217 return (CTL_ACTION_ERROR); 10218 10219 retval = ctl_get_lba_len(io2, &lba2, &len2); 10220 if (retval != 0) 10221 return (CTL_ACTION_ERROR); 10222 10223 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10224} 10225 10226static ctl_action 10227ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10228{ 10229 struct ctl_cmd_entry *pending_entry, *ooa_entry; 10230 ctl_serialize_action *serialize_row; 10231 10232 /* 10233 * The initiator attempted multiple untagged commands at the same 10234 * time. Can't do that. 10235 */ 10236 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10237 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10238 && ((pending_io->io_hdr.nexus.targ_port == 10239 ooa_io->io_hdr.nexus.targ_port) 10240 && (pending_io->io_hdr.nexus.initid.id == 10241 ooa_io->io_hdr.nexus.initid.id)) 10242 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10243 return (CTL_ACTION_OVERLAP); 10244 10245 /* 10246 * The initiator attempted to send multiple tagged commands with 10247 * the same ID. (It's fine if different initiators have the same 10248 * tag ID.) 10249 * 10250 * Even if all of those conditions are true, we don't kill the I/O 10251 * if the command ahead of us has been aborted. We won't end up 10252 * sending it to the FETD, and it's perfectly legal to resend a 10253 * command with the same tag number as long as the previous 10254 * instance of this tag number has been aborted somehow. 10255 */ 10256 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10257 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10258 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10259 && ((pending_io->io_hdr.nexus.targ_port == 10260 ooa_io->io_hdr.nexus.targ_port) 10261 && (pending_io->io_hdr.nexus.initid.id == 10262 ooa_io->io_hdr.nexus.initid.id)) 10263 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10264 return (CTL_ACTION_OVERLAP_TAG); 10265 10266 /* 10267 * If we get a head of queue tag, SAM-3 says that we should 10268 * immediately execute it. 10269 * 10270 * What happens if this command would normally block for some other 10271 * reason? e.g. a request sense with a head of queue tag 10272 * immediately after a write. Normally that would block, but this 10273 * will result in its getting executed immediately... 10274 * 10275 * We currently return "pass" instead of "skip", so we'll end up 10276 * going through the rest of the queue to check for overlapped tags. 10277 * 10278 * XXX KDM check for other types of blockage first?? 10279 */ 10280 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10281 return (CTL_ACTION_PASS); 10282 10283 /* 10284 * Ordered tags have to block until all items ahead of them 10285 * have completed. If we get called with an ordered tag, we always 10286 * block, if something else is ahead of us in the queue. 10287 */ 10288 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10289 return (CTL_ACTION_BLOCK); 10290 10291 /* 10292 * Simple tags get blocked until all head of queue and ordered tags 10293 * ahead of them have completed. I'm lumping untagged commands in 10294 * with simple tags here. XXX KDM is that the right thing to do? 10295 */ 10296 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10297 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10298 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10299 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10300 return (CTL_ACTION_BLOCK); 10301 10302 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 10303 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 10304 10305 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10306 10307 switch (serialize_row[pending_entry->seridx]) { 10308 case CTL_SER_BLOCK: 10309 return (CTL_ACTION_BLOCK); 10310 break; /* NOTREACHED */ 10311 case CTL_SER_EXTENT: 10312 return (ctl_extent_check(pending_io, ooa_io)); 10313 break; /* NOTREACHED */ 10314 case CTL_SER_PASS: 10315 return (CTL_ACTION_PASS); 10316 break; /* NOTREACHED */ 10317 case CTL_SER_SKIP: 10318 return (CTL_ACTION_SKIP); 10319 break; 10320 default: 10321 panic("invalid serialization value %d", 10322 serialize_row[pending_entry->seridx]); 10323 break; /* NOTREACHED */ 10324 } 10325 10326 return (CTL_ACTION_ERROR); 10327} 10328 10329/* 10330 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10331 * Assumptions: 10332 * - pending_io is generally either incoming, or on the blocked queue 10333 * - starting I/O is the I/O we want to start the check with. 10334 */ 10335static ctl_action 10336ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10337 union ctl_io *starting_io) 10338{ 10339 union ctl_io *ooa_io; 10340 ctl_action action; 10341 10342 mtx_assert(&lun->lun_lock, MA_OWNED); 10343 10344 /* 10345 * Run back along the OOA queue, starting with the current 10346 * blocked I/O and going through every I/O before it on the 10347 * queue. If starting_io is NULL, we'll just end up returning 10348 * CTL_ACTION_PASS. 10349 */ 10350 for (ooa_io = starting_io; ooa_io != NULL; 10351 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10352 ooa_links)){ 10353 10354 /* 10355 * This routine just checks to see whether 10356 * cur_blocked is blocked by ooa_io, which is ahead 10357 * of it in the queue. It doesn't queue/dequeue 10358 * cur_blocked. 10359 */ 10360 action = ctl_check_for_blockage(pending_io, ooa_io); 10361 switch (action) { 10362 case CTL_ACTION_BLOCK: 10363 case CTL_ACTION_OVERLAP: 10364 case CTL_ACTION_OVERLAP_TAG: 10365 case CTL_ACTION_SKIP: 10366 case CTL_ACTION_ERROR: 10367 return (action); 10368 break; /* NOTREACHED */ 10369 case CTL_ACTION_PASS: 10370 break; 10371 default: 10372 panic("invalid action %d", action); 10373 break; /* NOTREACHED */ 10374 } 10375 } 10376 10377 return (CTL_ACTION_PASS); 10378} 10379 10380/* 10381 * Assumptions: 10382 * - An I/O has just completed, and has been removed from the per-LUN OOA 10383 * queue, so some items on the blocked queue may now be unblocked. 10384 */ 10385static int 10386ctl_check_blocked(struct ctl_lun *lun) 10387{ 10388 union ctl_io *cur_blocked, *next_blocked; 10389 10390 mtx_assert(&lun->lun_lock, MA_OWNED); 10391 10392 /* 10393 * Run forward from the head of the blocked queue, checking each 10394 * entry against the I/Os prior to it on the OOA queue to see if 10395 * there is still any blockage. 10396 * 10397 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10398 * with our removing a variable on it while it is traversing the 10399 * list. 10400 */ 10401 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10402 cur_blocked != NULL; cur_blocked = next_blocked) { 10403 union ctl_io *prev_ooa; 10404 ctl_action action; 10405 10406 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10407 blocked_links); 10408 10409 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10410 ctl_ooaq, ooa_links); 10411 10412 /* 10413 * If cur_blocked happens to be the first item in the OOA 10414 * queue now, prev_ooa will be NULL, and the action 10415 * returned will just be CTL_ACTION_PASS. 10416 */ 10417 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10418 10419 switch (action) { 10420 case CTL_ACTION_BLOCK: 10421 /* Nothing to do here, still blocked */ 10422 break; 10423 case CTL_ACTION_OVERLAP: 10424 case CTL_ACTION_OVERLAP_TAG: 10425 /* 10426 * This shouldn't happen! In theory we've already 10427 * checked this command for overlap... 10428 */ 10429 break; 10430 case CTL_ACTION_PASS: 10431 case CTL_ACTION_SKIP: { 10432 struct ctl_softc *softc; 10433 struct ctl_cmd_entry *entry; 10434 uint32_t initidx; 10435 uint8_t opcode; 10436 int isc_retval; 10437 10438 /* 10439 * The skip case shouldn't happen, this transaction 10440 * should have never made it onto the blocked queue. 10441 */ 10442 /* 10443 * This I/O is no longer blocked, we can remove it 10444 * from the blocked queue. Since this is a TAILQ 10445 * (doubly linked list), we can do O(1) removals 10446 * from any place on the list. 10447 */ 10448 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10449 blocked_links); 10450 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10451 10452 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10453 /* 10454 * Need to send IO back to original side to 10455 * run 10456 */ 10457 union ctl_ha_msg msg_info; 10458 10459 msg_info.hdr.original_sc = 10460 cur_blocked->io_hdr.original_sc; 10461 msg_info.hdr.serializing_sc = cur_blocked; 10462 msg_info.hdr.msg_type = CTL_MSG_R2R; 10463 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10464 &msg_info, sizeof(msg_info), 0)) > 10465 CTL_HA_STATUS_SUCCESS) { 10466 printf("CTL:Check Blocked error from " 10467 "ctl_ha_msg_send %d\n", 10468 isc_retval); 10469 } 10470 break; 10471 } 10472 opcode = cur_blocked->scsiio.cdb[0]; 10473 entry = &ctl_cmd_table[opcode]; 10474 softc = control_softc; 10475 10476 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10477 10478 /* 10479 * Check this I/O for LUN state changes that may 10480 * have happened while this command was blocked. 10481 * The LUN state may have been changed by a command 10482 * ahead of us in the queue, so we need to re-check 10483 * for any states that can be caused by SCSI 10484 * commands. 10485 */ 10486 if (ctl_scsiio_lun_check(softc, lun, entry, 10487 &cur_blocked->scsiio) == 0) { 10488 cur_blocked->io_hdr.flags |= 10489 CTL_FLAG_IS_WAS_ON_RTR; 10490 ctl_enqueue_rtr(cur_blocked); 10491 } else 10492 ctl_done(cur_blocked); 10493 break; 10494 } 10495 default: 10496 /* 10497 * This probably shouldn't happen -- we shouldn't 10498 * get CTL_ACTION_ERROR, or anything else. 10499 */ 10500 break; 10501 } 10502 } 10503 10504 return (CTL_RETVAL_COMPLETE); 10505} 10506 10507/* 10508 * This routine (with one exception) checks LUN flags that can be set by 10509 * commands ahead of us in the OOA queue. These flags have to be checked 10510 * when a command initially comes in, and when we pull a command off the 10511 * blocked queue and are preparing to execute it. The reason we have to 10512 * check these flags for commands on the blocked queue is that the LUN 10513 * state may have been changed by a command ahead of us while we're on the 10514 * blocked queue. 10515 * 10516 * Ordering is somewhat important with these checks, so please pay 10517 * careful attention to the placement of any new checks. 10518 */ 10519static int 10520ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10521 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10522{ 10523 int retval; 10524 10525 retval = 0; 10526 10527 mtx_assert(&lun->lun_lock, MA_OWNED); 10528 10529 /* 10530 * If this shelf is a secondary shelf controller, we have to reject 10531 * any media access commands. 10532 */ 10533#if 0 10534 /* No longer needed for HA */ 10535 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10536 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10537 ctl_set_lun_standby(ctsio); 10538 retval = 1; 10539 goto bailout; 10540 } 10541#endif 10542 10543 /* 10544 * Check for a reservation conflict. If this command isn't allowed 10545 * even on reserved LUNs, and if this initiator isn't the one who 10546 * reserved us, reject the command with a reservation conflict. 10547 */ 10548 if ((lun->flags & CTL_LUN_RESERVED) 10549 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10550 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10551 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10552 || (ctsio->io_hdr.nexus.targ_target.id != 10553 lun->rsv_nexus.targ_target.id)) { 10554 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10555 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10556 retval = 1; 10557 goto bailout; 10558 } 10559 } 10560 10561 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10562 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10563 uint32_t residx; 10564 10565 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10566 /* 10567 * if we aren't registered or it's a res holder type 10568 * reservation and this isn't the res holder then set a 10569 * conflict. 10570 * NOTE: Commands which might be allowed on write exclusive 10571 * type reservations are checked in the particular command 10572 * for a conflict. Read and SSU are the only ones. 10573 */ 10574 if (!lun->per_res[residx].registered 10575 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10576 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10577 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10578 retval = 1; 10579 goto bailout; 10580 } 10581 10582 } 10583 10584 if ((lun->flags & CTL_LUN_OFFLINE) 10585 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10586 ctl_set_lun_not_ready(ctsio); 10587 retval = 1; 10588 goto bailout; 10589 } 10590 10591 /* 10592 * If the LUN is stopped, see if this particular command is allowed 10593 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10594 */ 10595 if ((lun->flags & CTL_LUN_STOPPED) 10596 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10597 /* "Logical unit not ready, initializing cmd. required" */ 10598 ctl_set_lun_stopped(ctsio); 10599 retval = 1; 10600 goto bailout; 10601 } 10602 10603 if ((lun->flags & CTL_LUN_INOPERABLE) 10604 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10605 /* "Medium format corrupted" */ 10606 ctl_set_medium_format_corrupted(ctsio); 10607 retval = 1; 10608 goto bailout; 10609 } 10610 10611bailout: 10612 return (retval); 10613 10614} 10615 10616static void 10617ctl_failover_io(union ctl_io *io, int have_lock) 10618{ 10619 ctl_set_busy(&io->scsiio); 10620 ctl_done(io); 10621} 10622 10623static void 10624ctl_failover(void) 10625{ 10626 struct ctl_lun *lun; 10627 struct ctl_softc *ctl_softc; 10628 union ctl_io *next_io, *pending_io; 10629 union ctl_io *io; 10630 int lun_idx; 10631 int i; 10632 10633 ctl_softc = control_softc; 10634 10635 mtx_lock(&ctl_softc->ctl_lock); 10636 /* 10637 * Remove any cmds from the other SC from the rtr queue. These 10638 * will obviously only be for LUNs for which we're the primary. 10639 * We can't send status or get/send data for these commands. 10640 * Since they haven't been executed yet, we can just remove them. 10641 * We'll either abort them or delete them below, depending on 10642 * which HA mode we're in. 10643 */ 10644#ifdef notyet 10645 mtx_lock(&ctl_softc->queue_lock); 10646 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10647 io != NULL; io = next_io) { 10648 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10649 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10650 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10651 ctl_io_hdr, links); 10652 } 10653 mtx_unlock(&ctl_softc->queue_lock); 10654#endif 10655 10656 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10657 lun = ctl_softc->ctl_luns[lun_idx]; 10658 if (lun==NULL) 10659 continue; 10660 10661 /* 10662 * Processor LUNs are primary on both sides. 10663 * XXX will this always be true? 10664 */ 10665 if (lun->be_lun->lun_type == T_PROCESSOR) 10666 continue; 10667 10668 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10669 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10670 printf("FAILOVER: primary lun %d\n", lun_idx); 10671 /* 10672 * Remove all commands from the other SC. First from the 10673 * blocked queue then from the ooa queue. Once we have 10674 * removed them. Call ctl_check_blocked to see if there 10675 * is anything that can run. 10676 */ 10677 for (io = (union ctl_io *)TAILQ_FIRST( 10678 &lun->blocked_queue); io != NULL; io = next_io) { 10679 10680 next_io = (union ctl_io *)TAILQ_NEXT( 10681 &io->io_hdr, blocked_links); 10682 10683 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10684 TAILQ_REMOVE(&lun->blocked_queue, 10685 &io->io_hdr,blocked_links); 10686 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10687 TAILQ_REMOVE(&lun->ooa_queue, 10688 &io->io_hdr, ooa_links); 10689 10690 ctl_free_io(io); 10691 } 10692 } 10693 10694 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10695 io != NULL; io = next_io) { 10696 10697 next_io = (union ctl_io *)TAILQ_NEXT( 10698 &io->io_hdr, ooa_links); 10699 10700 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10701 10702 TAILQ_REMOVE(&lun->ooa_queue, 10703 &io->io_hdr, 10704 ooa_links); 10705 10706 ctl_free_io(io); 10707 } 10708 } 10709 ctl_check_blocked(lun); 10710 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10711 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10712 10713 printf("FAILOVER: primary lun %d\n", lun_idx); 10714 /* 10715 * Abort all commands from the other SC. We can't 10716 * send status back for them now. These should get 10717 * cleaned up when they are completed or come out 10718 * for a datamove operation. 10719 */ 10720 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10721 io != NULL; io = next_io) { 10722 next_io = (union ctl_io *)TAILQ_NEXT( 10723 &io->io_hdr, ooa_links); 10724 10725 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10726 io->io_hdr.flags |= CTL_FLAG_ABORT; 10727 } 10728 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10729 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10730 10731 printf("FAILOVER: secondary lun %d\n", lun_idx); 10732 10733 lun->flags |= CTL_LUN_PRIMARY_SC; 10734 10735 /* 10736 * We send all I/O that was sent to this controller 10737 * and redirected to the other side back with 10738 * busy status, and have the initiator retry it. 10739 * Figuring out how much data has been transferred, 10740 * etc. and picking up where we left off would be 10741 * very tricky. 10742 * 10743 * XXX KDM need to remove I/O from the blocked 10744 * queue as well! 10745 */ 10746 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10747 &lun->ooa_queue); pending_io != NULL; 10748 pending_io = next_io) { 10749 10750 next_io = (union ctl_io *)TAILQ_NEXT( 10751 &pending_io->io_hdr, ooa_links); 10752 10753 pending_io->io_hdr.flags &= 10754 ~CTL_FLAG_SENT_2OTHER_SC; 10755 10756 if (pending_io->io_hdr.flags & 10757 CTL_FLAG_IO_ACTIVE) { 10758 pending_io->io_hdr.flags |= 10759 CTL_FLAG_FAILOVER; 10760 } else { 10761 ctl_set_busy(&pending_io->scsiio); 10762 ctl_done(pending_io); 10763 } 10764 } 10765 10766 /* 10767 * Build Unit Attention 10768 */ 10769 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10770 lun->pending_sense[i].ua_pending |= 10771 CTL_UA_ASYM_ACC_CHANGE; 10772 } 10773 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10774 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10775 printf("FAILOVER: secondary lun %d\n", lun_idx); 10776 /* 10777 * if the first io on the OOA is not on the RtR queue 10778 * add it. 10779 */ 10780 lun->flags |= CTL_LUN_PRIMARY_SC; 10781 10782 pending_io = (union ctl_io *)TAILQ_FIRST( 10783 &lun->ooa_queue); 10784 if (pending_io==NULL) { 10785 printf("Nothing on OOA queue\n"); 10786 continue; 10787 } 10788 10789 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10790 if ((pending_io->io_hdr.flags & 10791 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10792 pending_io->io_hdr.flags |= 10793 CTL_FLAG_IS_WAS_ON_RTR; 10794 ctl_enqueue_rtr(pending_io); 10795 } 10796#if 0 10797 else 10798 { 10799 printf("Tag 0x%04x is running\n", 10800 pending_io->scsiio.tag_num); 10801 } 10802#endif 10803 10804 next_io = (union ctl_io *)TAILQ_NEXT( 10805 &pending_io->io_hdr, ooa_links); 10806 for (pending_io=next_io; pending_io != NULL; 10807 pending_io = next_io) { 10808 pending_io->io_hdr.flags &= 10809 ~CTL_FLAG_SENT_2OTHER_SC; 10810 next_io = (union ctl_io *)TAILQ_NEXT( 10811 &pending_io->io_hdr, ooa_links); 10812 if (pending_io->io_hdr.flags & 10813 CTL_FLAG_IS_WAS_ON_RTR) { 10814#if 0 10815 printf("Tag 0x%04x is running\n", 10816 pending_io->scsiio.tag_num); 10817#endif 10818 continue; 10819 } 10820 10821 switch (ctl_check_ooa(lun, pending_io, 10822 (union ctl_io *)TAILQ_PREV( 10823 &pending_io->io_hdr, ctl_ooaq, 10824 ooa_links))) { 10825 10826 case CTL_ACTION_BLOCK: 10827 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10828 &pending_io->io_hdr, 10829 blocked_links); 10830 pending_io->io_hdr.flags |= 10831 CTL_FLAG_BLOCKED; 10832 break; 10833 case CTL_ACTION_PASS: 10834 case CTL_ACTION_SKIP: 10835 pending_io->io_hdr.flags |= 10836 CTL_FLAG_IS_WAS_ON_RTR; 10837 ctl_enqueue_rtr(pending_io); 10838 break; 10839 case CTL_ACTION_OVERLAP: 10840 ctl_set_overlapped_cmd( 10841 (struct ctl_scsiio *)pending_io); 10842 ctl_done(pending_io); 10843 break; 10844 case CTL_ACTION_OVERLAP_TAG: 10845 ctl_set_overlapped_tag( 10846 (struct ctl_scsiio *)pending_io, 10847 pending_io->scsiio.tag_num & 0xff); 10848 ctl_done(pending_io); 10849 break; 10850 case CTL_ACTION_ERROR: 10851 default: 10852 ctl_set_internal_failure( 10853 (struct ctl_scsiio *)pending_io, 10854 0, // sks_valid 10855 0); //retry count 10856 ctl_done(pending_io); 10857 break; 10858 } 10859 } 10860 10861 /* 10862 * Build Unit Attention 10863 */ 10864 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10865 lun->pending_sense[i].ua_pending |= 10866 CTL_UA_ASYM_ACC_CHANGE; 10867 } 10868 } else { 10869 panic("Unhandled HA mode failover, LUN flags = %#x, " 10870 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10871 } 10872 } 10873 ctl_pause_rtr = 0; 10874 mtx_unlock(&ctl_softc->ctl_lock); 10875} 10876 10877static int 10878ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10879{ 10880 struct ctl_lun *lun; 10881 struct ctl_cmd_entry *entry; 10882 uint8_t opcode; 10883 uint32_t initidx, targ_lun; 10884 int retval; 10885 10886 retval = 0; 10887 10888 lun = NULL; 10889 10890 opcode = ctsio->cdb[0]; 10891 10892 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 10893 if ((targ_lun < CTL_MAX_LUNS) 10894 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 10895 lun = ctl_softc->ctl_luns[targ_lun]; 10896 /* 10897 * If the LUN is invalid, pretend that it doesn't exist. 10898 * It will go away as soon as all pending I/O has been 10899 * completed. 10900 */ 10901 if (lun->flags & CTL_LUN_DISABLED) { 10902 lun = NULL; 10903 } else { 10904 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 10905 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 10906 lun->be_lun; 10907 if (lun->be_lun->lun_type == T_PROCESSOR) { 10908 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 10909 } 10910 } 10911 } else { 10912 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 10913 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 10914 } 10915 10916 entry = &ctl_cmd_table[opcode]; 10917 10918 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 10919 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 10920 10921 /* 10922 * Check to see whether we can send this command to LUNs that don't 10923 * exist. This should pretty much only be the case for inquiry 10924 * and request sense. Further checks, below, really require having 10925 * a LUN, so we can't really check the command anymore. Just put 10926 * it on the rtr queue. 10927 */ 10928 if (lun == NULL) { 10929 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) { 10930 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 10931 ctl_enqueue_rtr((union ctl_io *)ctsio); 10932 return (retval); 10933 } 10934 10935 ctl_set_unsupported_lun(ctsio); 10936 ctl_done((union ctl_io *)ctsio); 10937 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 10938 return (retval); 10939 } else { 10940 mtx_lock(&lun->lun_lock); 10941 10942 /* 10943 * Every I/O goes into the OOA queue for a particular LUN, and 10944 * stays there until completion. 10945 */ 10946 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 10947 10948 /* 10949 * Make sure we support this particular command on this LUN. 10950 * e.g., we don't support writes to the control LUN. 10951 */ 10952 switch (lun->be_lun->lun_type) { 10953 case T_PROCESSOR: 10954 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 10955 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10956 == 0)) { 10957 mtx_unlock(&lun->lun_lock); 10958 ctl_set_invalid_opcode(ctsio); 10959 ctl_done((union ctl_io *)ctsio); 10960 return (retval); 10961 } 10962 break; 10963 case T_DIRECT: 10964 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 10965 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 10966 == 0)){ 10967 mtx_unlock(&lun->lun_lock); 10968 ctl_set_invalid_opcode(ctsio); 10969 ctl_done((union ctl_io *)ctsio); 10970 return (retval); 10971 } 10972 break; 10973 default: 10974 mtx_unlock(&lun->lun_lock); 10975 panic("Unsupported CTL LUN type %d\n", 10976 lun->be_lun->lun_type); 10977 } 10978 } 10979 10980 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 10981 10982 /* 10983 * If we've got a request sense, it'll clear the contingent 10984 * allegiance condition. Otherwise, if we have a CA condition for 10985 * this initiator, clear it, because it sent down a command other 10986 * than request sense. 10987 */ 10988 if ((opcode != REQUEST_SENSE) 10989 && (ctl_is_set(lun->have_ca, initidx))) 10990 ctl_clear_mask(lun->have_ca, initidx); 10991 10992 /* 10993 * If the command has this flag set, it handles its own unit 10994 * attention reporting, we shouldn't do anything. Otherwise we 10995 * check for any pending unit attentions, and send them back to the 10996 * initiator. We only do this when a command initially comes in, 10997 * not when we pull it off the blocked queue. 10998 * 10999 * According to SAM-3, section 5.3.2, the order that things get 11000 * presented back to the host is basically unit attentions caused 11001 * by some sort of reset event, busy status, reservation conflicts 11002 * or task set full, and finally any other status. 11003 * 11004 * One issue here is that some of the unit attentions we report 11005 * don't fall into the "reset" category (e.g. "reported luns data 11006 * has changed"). So reporting it here, before the reservation 11007 * check, may be technically wrong. I guess the only thing to do 11008 * would be to check for and report the reset events here, and then 11009 * check for the other unit attention types after we check for a 11010 * reservation conflict. 11011 * 11012 * XXX KDM need to fix this 11013 */ 11014 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 11015 ctl_ua_type ua_type; 11016 11017 ua_type = lun->pending_sense[initidx].ua_pending; 11018 if (ua_type != CTL_UA_NONE) { 11019 scsi_sense_data_type sense_format; 11020 11021 if (lun != NULL) 11022 sense_format = (lun->flags & 11023 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 11024 SSD_TYPE_FIXED; 11025 else 11026 sense_format = SSD_TYPE_FIXED; 11027 11028 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 11029 sense_format); 11030 if (ua_type != CTL_UA_NONE) { 11031 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 11032 ctsio->io_hdr.status = CTL_SCSI_ERROR | 11033 CTL_AUTOSENSE; 11034 ctsio->sense_len = SSD_FULL_SIZE; 11035 lun->pending_sense[initidx].ua_pending &= 11036 ~ua_type; 11037 mtx_unlock(&lun->lun_lock); 11038 ctl_done((union ctl_io *)ctsio); 11039 return (retval); 11040 } 11041 } 11042 } 11043 11044 11045 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 11046 mtx_unlock(&lun->lun_lock); 11047 ctl_done((union ctl_io *)ctsio); 11048 return (retval); 11049 } 11050 11051 /* 11052 * XXX CHD this is where we want to send IO to other side if 11053 * this LUN is secondary on this SC. We will need to make a copy 11054 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 11055 * the copy we send as FROM_OTHER. 11056 * We also need to stuff the address of the original IO so we can 11057 * find it easily. Something similar will need be done on the other 11058 * side so when we are done we can find the copy. 11059 */ 11060 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 11061 union ctl_ha_msg msg_info; 11062 int isc_retval; 11063 11064 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11065 11066 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 11067 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 11068#if 0 11069 printf("1. ctsio %p\n", ctsio); 11070#endif 11071 msg_info.hdr.serializing_sc = NULL; 11072 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 11073 msg_info.scsi.tag_num = ctsio->tag_num; 11074 msg_info.scsi.tag_type = ctsio->tag_type; 11075 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 11076 11077 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11078 11079 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11080 (void *)&msg_info, sizeof(msg_info), 0)) > 11081 CTL_HA_STATUS_SUCCESS) { 11082 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 11083 isc_retval); 11084 printf("CTL:opcode is %x\n",opcode); 11085 } else { 11086#if 0 11087 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 11088#endif 11089 } 11090 11091 /* 11092 * XXX KDM this I/O is off the incoming queue, but hasn't 11093 * been inserted on any other queue. We may need to come 11094 * up with a holding queue while we wait for serialization 11095 * so that we have an idea of what we're waiting for from 11096 * the other side. 11097 */ 11098 mtx_unlock(&lun->lun_lock); 11099 return (retval); 11100 } 11101 11102 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 11103 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 11104 ctl_ooaq, ooa_links))) { 11105 case CTL_ACTION_BLOCK: 11106 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 11107 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 11108 blocked_links); 11109 mtx_unlock(&lun->lun_lock); 11110 return (retval); 11111 case CTL_ACTION_PASS: 11112 case CTL_ACTION_SKIP: 11113 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11114 mtx_unlock(&lun->lun_lock); 11115 ctl_enqueue_rtr((union ctl_io *)ctsio); 11116 break; 11117 case CTL_ACTION_OVERLAP: 11118 mtx_unlock(&lun->lun_lock); 11119 ctl_set_overlapped_cmd(ctsio); 11120 ctl_done((union ctl_io *)ctsio); 11121 break; 11122 case CTL_ACTION_OVERLAP_TAG: 11123 mtx_unlock(&lun->lun_lock); 11124 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 11125 ctl_done((union ctl_io *)ctsio); 11126 break; 11127 case CTL_ACTION_ERROR: 11128 default: 11129 mtx_unlock(&lun->lun_lock); 11130 ctl_set_internal_failure(ctsio, 11131 /*sks_valid*/ 0, 11132 /*retry_count*/ 0); 11133 ctl_done((union ctl_io *)ctsio); 11134 break; 11135 } 11136 return (retval); 11137} 11138 11139static int 11140ctl_scsiio(struct ctl_scsiio *ctsio) 11141{ 11142 int retval; 11143 struct ctl_cmd_entry *entry; 11144 11145 retval = CTL_RETVAL_COMPLETE; 11146 11147 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 11148 11149 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11150 11151 /* 11152 * If this I/O has been aborted, just send it straight to 11153 * ctl_done() without executing it. 11154 */ 11155 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11156 ctl_done((union ctl_io *)ctsio); 11157 goto bailout; 11158 } 11159 11160 /* 11161 * All the checks should have been handled by ctl_scsiio_precheck(). 11162 * We should be clear now to just execute the I/O. 11163 */ 11164 retval = entry->execute(ctsio); 11165 11166bailout: 11167 return (retval); 11168} 11169 11170/* 11171 * Since we only implement one target right now, a bus reset simply resets 11172 * our single target. 11173 */ 11174static int 11175ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11176{ 11177 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11178} 11179 11180static int 11181ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11182 ctl_ua_type ua_type) 11183{ 11184 struct ctl_lun *lun; 11185 int retval; 11186 11187 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11188 union ctl_ha_msg msg_info; 11189 11190 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11191 msg_info.hdr.nexus = io->io_hdr.nexus; 11192 if (ua_type==CTL_UA_TARG_RESET) 11193 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11194 else 11195 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11196 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11197 msg_info.hdr.original_sc = NULL; 11198 msg_info.hdr.serializing_sc = NULL; 11199 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11200 (void *)&msg_info, sizeof(msg_info), 0)) { 11201 } 11202 } 11203 retval = 0; 11204 11205 mtx_lock(&ctl_softc->ctl_lock); 11206 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11207 retval += ctl_lun_reset(lun, io, ua_type); 11208 mtx_unlock(&ctl_softc->ctl_lock); 11209 11210 return (retval); 11211} 11212 11213/* 11214 * The LUN should always be set. The I/O is optional, and is used to 11215 * distinguish between I/Os sent by this initiator, and by other 11216 * initiators. We set unit attention for initiators other than this one. 11217 * SAM-3 is vague on this point. It does say that a unit attention should 11218 * be established for other initiators when a LUN is reset (see section 11219 * 5.7.3), but it doesn't specifically say that the unit attention should 11220 * be established for this particular initiator when a LUN is reset. Here 11221 * is the relevant text, from SAM-3 rev 8: 11222 * 11223 * 5.7.2 When a SCSI initiator port aborts its own tasks 11224 * 11225 * When a SCSI initiator port causes its own task(s) to be aborted, no 11226 * notification that the task(s) have been aborted shall be returned to 11227 * the SCSI initiator port other than the completion response for the 11228 * command or task management function action that caused the task(s) to 11229 * be aborted and notification(s) associated with related effects of the 11230 * action (e.g., a reset unit attention condition). 11231 * 11232 * XXX KDM for now, we're setting unit attention for all initiators. 11233 */ 11234static int 11235ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11236{ 11237 union ctl_io *xio; 11238#if 0 11239 uint32_t initindex; 11240#endif 11241 int i; 11242 11243 mtx_lock(&lun->lun_lock); 11244 /* 11245 * Run through the OOA queue and abort each I/O. 11246 */ 11247#if 0 11248 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11249#endif 11250 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11251 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11252 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11253 } 11254 11255 /* 11256 * This version sets unit attention for every 11257 */ 11258#if 0 11259 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11260 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11261 if (initindex == i) 11262 continue; 11263 lun->pending_sense[i].ua_pending |= ua_type; 11264 } 11265#endif 11266 11267 /* 11268 * A reset (any kind, really) clears reservations established with 11269 * RESERVE/RELEASE. It does not clear reservations established 11270 * with PERSISTENT RESERVE OUT, but we don't support that at the 11271 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11272 * reservations made with the RESERVE/RELEASE commands, because 11273 * those commands are obsolete in SPC-3. 11274 */ 11275 lun->flags &= ~CTL_LUN_RESERVED; 11276 11277 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11278 ctl_clear_mask(lun->have_ca, i); 11279 lun->pending_sense[i].ua_pending |= ua_type; 11280 } 11281 mtx_lock(&lun->lun_lock); 11282 11283 return (0); 11284} 11285 11286static int 11287ctl_abort_task(union ctl_io *io) 11288{ 11289 union ctl_io *xio; 11290 struct ctl_lun *lun; 11291 struct ctl_softc *ctl_softc; 11292#if 0 11293 struct sbuf sb; 11294 char printbuf[128]; 11295#endif 11296 int found; 11297 uint32_t targ_lun; 11298 11299 ctl_softc = control_softc; 11300 found = 0; 11301 11302 /* 11303 * Look up the LUN. 11304 */ 11305 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11306 mtx_lock(&ctl_softc->ctl_lock); 11307 if ((targ_lun < CTL_MAX_LUNS) 11308 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11309 lun = ctl_softc->ctl_luns[targ_lun]; 11310 else { 11311 mtx_unlock(&ctl_softc->ctl_lock); 11312 goto bailout; 11313 } 11314 11315#if 0 11316 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11317 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11318#endif 11319 11320 mtx_lock(&lun->lun_lock); 11321 mtx_unlock(&ctl_softc->ctl_lock); 11322 /* 11323 * Run through the OOA queue and attempt to find the given I/O. 11324 * The target port, initiator ID, tag type and tag number have to 11325 * match the values that we got from the initiator. If we have an 11326 * untagged command to abort, simply abort the first untagged command 11327 * we come to. We only allow one untagged command at a time of course. 11328 */ 11329#if 0 11330 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11331#endif 11332 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11333 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11334#if 0 11335 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11336 11337 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11338 lun->lun, xio->scsiio.tag_num, 11339 xio->scsiio.tag_type, 11340 (xio->io_hdr.blocked_links.tqe_prev 11341 == NULL) ? "" : " BLOCKED", 11342 (xio->io_hdr.flags & 11343 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11344 (xio->io_hdr.flags & 11345 CTL_FLAG_ABORT) ? " ABORT" : "", 11346 (xio->io_hdr.flags & 11347 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11348 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11349 sbuf_finish(&sb); 11350 printf("%s\n", sbuf_data(&sb)); 11351#endif 11352 11353 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11354 && (xio->io_hdr.nexus.initid.id == 11355 io->io_hdr.nexus.initid.id)) { 11356 /* 11357 * If the abort says that the task is untagged, the 11358 * task in the queue must be untagged. Otherwise, 11359 * we just check to see whether the tag numbers 11360 * match. This is because the QLogic firmware 11361 * doesn't pass back the tag type in an abort 11362 * request. 11363 */ 11364#if 0 11365 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11366 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11367 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11368#endif 11369 /* 11370 * XXX KDM we've got problems with FC, because it 11371 * doesn't send down a tag type with aborts. So we 11372 * can only really go by the tag number... 11373 * This may cause problems with parallel SCSI. 11374 * Need to figure that out!! 11375 */ 11376 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11377 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11378 found = 1; 11379 if ((io->io_hdr.flags & 11380 CTL_FLAG_FROM_OTHER_SC) == 0 && 11381 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11382 union ctl_ha_msg msg_info; 11383 11384 io->io_hdr.flags |= 11385 CTL_FLAG_SENT_2OTHER_SC; 11386 msg_info.hdr.nexus = io->io_hdr.nexus; 11387 msg_info.task.task_action = 11388 CTL_TASK_ABORT_TASK; 11389 msg_info.task.tag_num = 11390 io->taskio.tag_num; 11391 msg_info.task.tag_type = 11392 io->taskio.tag_type; 11393 msg_info.hdr.msg_type = 11394 CTL_MSG_MANAGE_TASKS; 11395 msg_info.hdr.original_sc = NULL; 11396 msg_info.hdr.serializing_sc = NULL; 11397#if 0 11398 printf("Sent Abort to other side\n"); 11399#endif 11400 if (CTL_HA_STATUS_SUCCESS != 11401 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11402 (void *)&msg_info, 11403 sizeof(msg_info), 0)) { 11404 } 11405 } 11406#if 0 11407 printf("ctl_abort_task: found I/O to abort\n"); 11408#endif 11409 break; 11410 } 11411 } 11412 } 11413 mtx_unlock(&lun->lun_lock); 11414 11415bailout: 11416 11417 if (found == 0) { 11418 /* 11419 * This isn't really an error. It's entirely possible for 11420 * the abort and command completion to cross on the wire. 11421 * This is more of an informative/diagnostic error. 11422 */ 11423#if 0 11424 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11425 "%d:%d:%d:%d tag %d type %d\n", 11426 io->io_hdr.nexus.initid.id, 11427 io->io_hdr.nexus.targ_port, 11428 io->io_hdr.nexus.targ_target.id, 11429 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11430 io->taskio.tag_type); 11431#endif 11432 return (1); 11433 } else 11434 return (0); 11435} 11436 11437/* 11438 * This routine cannot block! It must be callable from an interrupt 11439 * handler as well as from the work thread. 11440 */ 11441static void 11442ctl_run_task(union ctl_io *io) 11443{ 11444 struct ctl_softc *ctl_softc; 11445 int retval; 11446 const char *task_desc; 11447 11448 CTL_DEBUG_PRINT(("ctl_run_task\n")); 11449 11450 ctl_softc = control_softc; 11451 retval = 0; 11452 11453 KASSERT(io->io_hdr.io_type == CTL_IO_TASK, 11454 ("ctl_run_task: Unextected io_type %d\n", 11455 io->io_hdr.io_type)); 11456 11457 task_desc = ctl_scsi_task_string(&io->taskio); 11458 if (task_desc != NULL) { 11459#ifdef NEEDTOPORT 11460 csevent_log(CSC_CTL | CSC_SHELF_SW | 11461 CTL_TASK_REPORT, 11462 csevent_LogType_Trace, 11463 csevent_Severity_Information, 11464 csevent_AlertLevel_Green, 11465 csevent_FRU_Firmware, 11466 csevent_FRU_Unknown, 11467 "CTL: received task: %s",task_desc); 11468#endif 11469 } else { 11470#ifdef NEEDTOPORT 11471 csevent_log(CSC_CTL | CSC_SHELF_SW | 11472 CTL_TASK_REPORT, 11473 csevent_LogType_Trace, 11474 csevent_Severity_Information, 11475 csevent_AlertLevel_Green, 11476 csevent_FRU_Firmware, 11477 csevent_FRU_Unknown, 11478 "CTL: received unknown task " 11479 "type: %d (%#x)", 11480 io->taskio.task_action, 11481 io->taskio.task_action); 11482#endif 11483 } 11484 switch (io->taskio.task_action) { 11485 case CTL_TASK_ABORT_TASK: 11486 retval = ctl_abort_task(io); 11487 break; 11488 case CTL_TASK_ABORT_TASK_SET: 11489 break; 11490 case CTL_TASK_CLEAR_ACA: 11491 break; 11492 case CTL_TASK_CLEAR_TASK_SET: 11493 break; 11494 case CTL_TASK_LUN_RESET: { 11495 struct ctl_lun *lun; 11496 uint32_t targ_lun; 11497 int retval; 11498 11499 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11500 mtx_lock(&ctl_softc->ctl_lock); 11501 if ((targ_lun < CTL_MAX_LUNS) 11502 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11503 lun = ctl_softc->ctl_luns[targ_lun]; 11504 else { 11505 mtx_unlock(&ctl_softc->ctl_lock); 11506 retval = 1; 11507 break; 11508 } 11509 11510 if (!(io->io_hdr.flags & 11511 CTL_FLAG_FROM_OTHER_SC)) { 11512 union ctl_ha_msg msg_info; 11513 11514 io->io_hdr.flags |= 11515 CTL_FLAG_SENT_2OTHER_SC; 11516 msg_info.hdr.msg_type = 11517 CTL_MSG_MANAGE_TASKS; 11518 msg_info.hdr.nexus = io->io_hdr.nexus; 11519 msg_info.task.task_action = 11520 CTL_TASK_LUN_RESET; 11521 msg_info.hdr.original_sc = NULL; 11522 msg_info.hdr.serializing_sc = NULL; 11523 if (CTL_HA_STATUS_SUCCESS != 11524 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11525 (void *)&msg_info, 11526 sizeof(msg_info), 0)) { 11527 } 11528 } 11529 11530 retval = ctl_lun_reset(lun, io, 11531 CTL_UA_LUN_RESET); 11532 mtx_unlock(&ctl_softc->ctl_lock); 11533 break; 11534 } 11535 case CTL_TASK_TARGET_RESET: 11536 retval = ctl_target_reset(ctl_softc, io, CTL_UA_TARG_RESET); 11537 break; 11538 case CTL_TASK_BUS_RESET: 11539 retval = ctl_bus_reset(ctl_softc, io); 11540 break; 11541 case CTL_TASK_PORT_LOGIN: 11542 break; 11543 case CTL_TASK_PORT_LOGOUT: 11544 break; 11545 default: 11546 printf("ctl_run_task: got unknown task management event %d\n", 11547 io->taskio.task_action); 11548 break; 11549 } 11550 if (retval == 0) 11551 io->io_hdr.status = CTL_SUCCESS; 11552 else 11553 io->io_hdr.status = CTL_ERROR; 11554 11555 /* 11556 * This will queue this I/O to the done queue, but the 11557 * work thread won't be able to process it until we 11558 * return and the lock is released. 11559 */ 11560 ctl_done(io); 11561} 11562 11563/* 11564 * For HA operation. Handle commands that come in from the other 11565 * controller. 11566 */ 11567static void 11568ctl_handle_isc(union ctl_io *io) 11569{ 11570 int free_io; 11571 struct ctl_lun *lun; 11572 struct ctl_softc *ctl_softc; 11573 uint32_t targ_lun; 11574 11575 ctl_softc = control_softc; 11576 11577 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11578 lun = ctl_softc->ctl_luns[targ_lun]; 11579 11580 switch (io->io_hdr.msg_type) { 11581 case CTL_MSG_SERIALIZE: 11582 free_io = ctl_serialize_other_sc_cmd(&io->scsiio); 11583 break; 11584 case CTL_MSG_R2R: { 11585 uint8_t opcode; 11586 struct ctl_cmd_entry *entry; 11587 11588 /* 11589 * This is only used in SER_ONLY mode. 11590 */ 11591 free_io = 0; 11592 opcode = io->scsiio.cdb[0]; 11593 entry = &ctl_cmd_table[opcode]; 11594 mtx_lock(&lun->lun_lock); 11595 if (ctl_scsiio_lun_check(ctl_softc, lun, 11596 entry, (struct ctl_scsiio *)io) != 0) { 11597 mtx_unlock(&lun->lun_lock); 11598 ctl_done(io); 11599 break; 11600 } 11601 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11602 mtx_unlock(&lun->lun_lock); 11603 ctl_enqueue_rtr(io); 11604 break; 11605 } 11606 case CTL_MSG_FINISH_IO: 11607 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11608 free_io = 0; 11609 ctl_done(io); 11610 } else { 11611 free_io = 1; 11612 mtx_lock(&lun->lun_lock); 11613 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11614 ooa_links); 11615 ctl_check_blocked(lun); 11616 mtx_unlock(&lun->lun_lock); 11617 } 11618 break; 11619 case CTL_MSG_PERS_ACTION: 11620 ctl_hndl_per_res_out_on_other_sc( 11621 (union ctl_ha_msg *)&io->presio.pr_msg); 11622 free_io = 1; 11623 break; 11624 case CTL_MSG_BAD_JUJU: 11625 free_io = 0; 11626 ctl_done(io); 11627 break; 11628 case CTL_MSG_DATAMOVE: 11629 /* Only used in XFER mode */ 11630 free_io = 0; 11631 ctl_datamove_remote(io); 11632 break; 11633 case CTL_MSG_DATAMOVE_DONE: 11634 /* Only used in XFER mode */ 11635 free_io = 0; 11636 io->scsiio.be_move_done(io); 11637 break; 11638 default: 11639 free_io = 1; 11640 printf("%s: Invalid message type %d\n", 11641 __func__, io->io_hdr.msg_type); 11642 break; 11643 } 11644 if (free_io) 11645 ctl_free_io(io); 11646 11647} 11648 11649 11650/* 11651 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11652 * there is no match. 11653 */ 11654static ctl_lun_error_pattern 11655ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11656{ 11657 struct ctl_cmd_entry *entry; 11658 ctl_lun_error_pattern filtered_pattern, pattern; 11659 uint8_t opcode; 11660 11661 pattern = desc->error_pattern; 11662 11663 /* 11664 * XXX KDM we need more data passed into this function to match a 11665 * custom pattern, and we actually need to implement custom pattern 11666 * matching. 11667 */ 11668 if (pattern & CTL_LUN_PAT_CMD) 11669 return (CTL_LUN_PAT_CMD); 11670 11671 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11672 return (CTL_LUN_PAT_ANY); 11673 11674 opcode = ctsio->cdb[0]; 11675 entry = &ctl_cmd_table[opcode]; 11676 11677 filtered_pattern = entry->pattern & pattern; 11678 11679 /* 11680 * If the user requested specific flags in the pattern (e.g. 11681 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11682 * flags. 11683 * 11684 * If the user did not specify any flags, it doesn't matter whether 11685 * or not the command supports the flags. 11686 */ 11687 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11688 (pattern & ~CTL_LUN_PAT_MASK)) 11689 return (CTL_LUN_PAT_NONE); 11690 11691 /* 11692 * If the user asked for a range check, see if the requested LBA 11693 * range overlaps with this command's LBA range. 11694 */ 11695 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11696 uint64_t lba1; 11697 uint32_t len1; 11698 ctl_action action; 11699 int retval; 11700 11701 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11702 if (retval != 0) 11703 return (CTL_LUN_PAT_NONE); 11704 11705 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11706 desc->lba_range.len); 11707 /* 11708 * A "pass" means that the LBA ranges don't overlap, so 11709 * this doesn't match the user's range criteria. 11710 */ 11711 if (action == CTL_ACTION_PASS) 11712 return (CTL_LUN_PAT_NONE); 11713 } 11714 11715 return (filtered_pattern); 11716} 11717 11718static void 11719ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11720{ 11721 struct ctl_error_desc *desc, *desc2; 11722 11723 mtx_assert(&lun->lun_lock, MA_OWNED); 11724 11725 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11726 ctl_lun_error_pattern pattern; 11727 /* 11728 * Check to see whether this particular command matches 11729 * the pattern in the descriptor. 11730 */ 11731 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11732 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11733 continue; 11734 11735 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11736 case CTL_LUN_INJ_ABORTED: 11737 ctl_set_aborted(&io->scsiio); 11738 break; 11739 case CTL_LUN_INJ_MEDIUM_ERR: 11740 ctl_set_medium_error(&io->scsiio); 11741 break; 11742 case CTL_LUN_INJ_UA: 11743 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11744 * OCCURRED */ 11745 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11746 break; 11747 case CTL_LUN_INJ_CUSTOM: 11748 /* 11749 * We're assuming the user knows what he is doing. 11750 * Just copy the sense information without doing 11751 * checks. 11752 */ 11753 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11754 ctl_min(sizeof(desc->custom_sense), 11755 sizeof(io->scsiio.sense_data))); 11756 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11757 io->scsiio.sense_len = SSD_FULL_SIZE; 11758 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11759 break; 11760 case CTL_LUN_INJ_NONE: 11761 default: 11762 /* 11763 * If this is an error injection type we don't know 11764 * about, clear the continuous flag (if it is set) 11765 * so it will get deleted below. 11766 */ 11767 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11768 break; 11769 } 11770 /* 11771 * By default, each error injection action is a one-shot 11772 */ 11773 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11774 continue; 11775 11776 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11777 11778 free(desc, M_CTL); 11779 } 11780} 11781 11782#ifdef CTL_IO_DELAY 11783static void 11784ctl_datamove_timer_wakeup(void *arg) 11785{ 11786 union ctl_io *io; 11787 11788 io = (union ctl_io *)arg; 11789 11790 ctl_datamove(io); 11791} 11792#endif /* CTL_IO_DELAY */ 11793 11794void 11795ctl_datamove(union ctl_io *io) 11796{ 11797 void (*fe_datamove)(union ctl_io *io); 11798 11799 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 11800 11801 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11802 11803#ifdef CTL_TIME_IO 11804 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11805 char str[256]; 11806 char path_str[64]; 11807 struct sbuf sb; 11808 11809 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11810 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11811 11812 sbuf_cat(&sb, path_str); 11813 switch (io->io_hdr.io_type) { 11814 case CTL_IO_SCSI: 11815 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11816 sbuf_printf(&sb, "\n"); 11817 sbuf_cat(&sb, path_str); 11818 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11819 io->scsiio.tag_num, io->scsiio.tag_type); 11820 break; 11821 case CTL_IO_TASK: 11822 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11823 "Tag Type: %d\n", io->taskio.task_action, 11824 io->taskio.tag_num, io->taskio.tag_type); 11825 break; 11826 default: 11827 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11828 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11829 break; 11830 } 11831 sbuf_cat(&sb, path_str); 11832 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11833 (intmax_t)time_uptime - io->io_hdr.start_time); 11834 sbuf_finish(&sb); 11835 printf("%s", sbuf_data(&sb)); 11836 } 11837#endif /* CTL_TIME_IO */ 11838 11839#ifdef CTL_IO_DELAY 11840 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11841 struct ctl_lun *lun; 11842 11843 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11844 11845 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11846 } else { 11847 struct ctl_lun *lun; 11848 11849 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11850 if ((lun != NULL) 11851 && (lun->delay_info.datamove_delay > 0)) { 11852 struct callout *callout; 11853 11854 callout = (struct callout *)&io->io_hdr.timer_bytes; 11855 callout_init(callout, /*mpsafe*/ 1); 11856 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11857 callout_reset(callout, 11858 lun->delay_info.datamove_delay * hz, 11859 ctl_datamove_timer_wakeup, io); 11860 if (lun->delay_info.datamove_type == 11861 CTL_DELAY_TYPE_ONESHOT) 11862 lun->delay_info.datamove_delay = 0; 11863 return; 11864 } 11865 } 11866#endif 11867 11868 /* 11869 * This command has been aborted. Set the port status, so we fail 11870 * the data move. 11871 */ 11872 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11873 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11874 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11875 io->io_hdr.nexus.targ_port, 11876 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11877 io->io_hdr.nexus.targ_lun); 11878 io->io_hdr.status = CTL_CMD_ABORTED; 11879 io->io_hdr.port_status = 31337; 11880 /* 11881 * Note that the backend, in this case, will get the 11882 * callback in its context. In other cases it may get 11883 * called in the frontend's interrupt thread context. 11884 */ 11885 io->scsiio.be_move_done(io); 11886 return; 11887 } 11888 11889 /* 11890 * If we're in XFER mode and this I/O is from the other shelf 11891 * controller, we need to send the DMA to the other side to 11892 * actually transfer the data to/from the host. In serialize only 11893 * mode the transfer happens below CTL and ctl_datamove() is only 11894 * called on the machine that originally received the I/O. 11895 */ 11896 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 11897 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11898 union ctl_ha_msg msg; 11899 uint32_t sg_entries_sent; 11900 int do_sg_copy; 11901 int i; 11902 11903 memset(&msg, 0, sizeof(msg)); 11904 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 11905 msg.hdr.original_sc = io->io_hdr.original_sc; 11906 msg.hdr.serializing_sc = io; 11907 msg.hdr.nexus = io->io_hdr.nexus; 11908 msg.dt.flags = io->io_hdr.flags; 11909 /* 11910 * We convert everything into a S/G list here. We can't 11911 * pass by reference, only by value between controllers. 11912 * So we can't pass a pointer to the S/G list, only as many 11913 * S/G entries as we can fit in here. If it's possible for 11914 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 11915 * then we need to break this up into multiple transfers. 11916 */ 11917 if (io->scsiio.kern_sg_entries == 0) { 11918 msg.dt.kern_sg_entries = 1; 11919 /* 11920 * If this is in cached memory, flush the cache 11921 * before we send the DMA request to the other 11922 * controller. We want to do this in either the 11923 * read or the write case. The read case is 11924 * straightforward. In the write case, we want to 11925 * make sure nothing is in the local cache that 11926 * could overwrite the DMAed data. 11927 */ 11928 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11929 /* 11930 * XXX KDM use bus_dmamap_sync() here. 11931 */ 11932 } 11933 11934 /* 11935 * Convert to a physical address if this is a 11936 * virtual address. 11937 */ 11938 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 11939 msg.dt.sg_list[0].addr = 11940 io->scsiio.kern_data_ptr; 11941 } else { 11942 /* 11943 * XXX KDM use busdma here! 11944 */ 11945#if 0 11946 msg.dt.sg_list[0].addr = (void *) 11947 vtophys(io->scsiio.kern_data_ptr); 11948#endif 11949 } 11950 11951 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 11952 do_sg_copy = 0; 11953 } else { 11954 struct ctl_sg_entry *sgl; 11955 11956 do_sg_copy = 1; 11957 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 11958 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 11959 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 11960 /* 11961 * XXX KDM use bus_dmamap_sync() here. 11962 */ 11963 } 11964 } 11965 11966 msg.dt.kern_data_len = io->scsiio.kern_data_len; 11967 msg.dt.kern_total_len = io->scsiio.kern_total_len; 11968 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 11969 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 11970 msg.dt.sg_sequence = 0; 11971 11972 /* 11973 * Loop until we've sent all of the S/G entries. On the 11974 * other end, we'll recompose these S/G entries into one 11975 * contiguous list before passing it to the 11976 */ 11977 for (sg_entries_sent = 0; sg_entries_sent < 11978 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 11979 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 11980 sizeof(msg.dt.sg_list[0])), 11981 msg.dt.kern_sg_entries - sg_entries_sent); 11982 11983 if (do_sg_copy != 0) { 11984 struct ctl_sg_entry *sgl; 11985 int j; 11986 11987 sgl = (struct ctl_sg_entry *) 11988 io->scsiio.kern_data_ptr; 11989 /* 11990 * If this is in cached memory, flush the cache 11991 * before we send the DMA request to the other 11992 * controller. We want to do this in either 11993 * the * read or the write case. The read 11994 * case is straightforward. In the write 11995 * case, we want to make sure nothing is 11996 * in the local cache that could overwrite 11997 * the DMAed data. 11998 */ 11999 12000 for (i = sg_entries_sent, j = 0; 12001 i < msg.dt.cur_sg_entries; i++, j++) { 12002 if ((io->io_hdr.flags & 12003 CTL_FLAG_NO_DATASYNC) == 0) { 12004 /* 12005 * XXX KDM use bus_dmamap_sync() 12006 */ 12007 } 12008 if ((io->io_hdr.flags & 12009 CTL_FLAG_BUS_ADDR) == 0) { 12010 /* 12011 * XXX KDM use busdma. 12012 */ 12013#if 0 12014 msg.dt.sg_list[j].addr =(void *) 12015 vtophys(sgl[i].addr); 12016#endif 12017 } else { 12018 msg.dt.sg_list[j].addr = 12019 sgl[i].addr; 12020 } 12021 msg.dt.sg_list[j].len = sgl[i].len; 12022 } 12023 } 12024 12025 sg_entries_sent += msg.dt.cur_sg_entries; 12026 if (sg_entries_sent >= msg.dt.kern_sg_entries) 12027 msg.dt.sg_last = 1; 12028 else 12029 msg.dt.sg_last = 0; 12030 12031 /* 12032 * XXX KDM drop and reacquire the lock here? 12033 */ 12034 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12035 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12036 /* 12037 * XXX do something here. 12038 */ 12039 } 12040 12041 msg.dt.sent_sg_entries = sg_entries_sent; 12042 } 12043 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12044 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 12045 ctl_failover_io(io, /*have_lock*/ 0); 12046 12047 } else { 12048 12049 /* 12050 * Lookup the fe_datamove() function for this particular 12051 * front end. 12052 */ 12053 fe_datamove = 12054 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12055 12056 fe_datamove(io); 12057 } 12058} 12059 12060static void 12061ctl_send_datamove_done(union ctl_io *io, int have_lock) 12062{ 12063 union ctl_ha_msg msg; 12064 int isc_status; 12065 12066 memset(&msg, 0, sizeof(msg)); 12067 12068 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 12069 msg.hdr.original_sc = io; 12070 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 12071 msg.hdr.nexus = io->io_hdr.nexus; 12072 msg.hdr.status = io->io_hdr.status; 12073 msg.scsi.tag_num = io->scsiio.tag_num; 12074 msg.scsi.tag_type = io->scsiio.tag_type; 12075 msg.scsi.scsi_status = io->scsiio.scsi_status; 12076 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12077 sizeof(io->scsiio.sense_data)); 12078 msg.scsi.sense_len = io->scsiio.sense_len; 12079 msg.scsi.sense_residual = io->scsiio.sense_residual; 12080 msg.scsi.fetd_status = io->io_hdr.port_status; 12081 msg.scsi.residual = io->scsiio.residual; 12082 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12083 12084 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12085 ctl_failover_io(io, /*have_lock*/ have_lock); 12086 return; 12087 } 12088 12089 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 12090 if (isc_status > CTL_HA_STATUS_SUCCESS) { 12091 /* XXX do something if this fails */ 12092 } 12093 12094} 12095 12096/* 12097 * The DMA to the remote side is done, now we need to tell the other side 12098 * we're done so it can continue with its data movement. 12099 */ 12100static void 12101ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12102{ 12103 union ctl_io *io; 12104 12105 io = rq->context; 12106 12107 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12108 printf("%s: ISC DMA write failed with error %d", __func__, 12109 rq->ret); 12110 ctl_set_internal_failure(&io->scsiio, 12111 /*sks_valid*/ 1, 12112 /*retry_count*/ rq->ret); 12113 } 12114 12115 ctl_dt_req_free(rq); 12116 12117 /* 12118 * In this case, we had to malloc the memory locally. Free it. 12119 */ 12120 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12121 int i; 12122 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12123 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12124 } 12125 /* 12126 * The data is in local and remote memory, so now we need to send 12127 * status (good or back) back to the other side. 12128 */ 12129 ctl_send_datamove_done(io, /*have_lock*/ 0); 12130} 12131 12132/* 12133 * We've moved the data from the host/controller into local memory. Now we 12134 * need to push it over to the remote controller's memory. 12135 */ 12136static int 12137ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12138{ 12139 int retval; 12140 12141 retval = 0; 12142 12143 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12144 ctl_datamove_remote_write_cb); 12145 12146 return (retval); 12147} 12148 12149static void 12150ctl_datamove_remote_write(union ctl_io *io) 12151{ 12152 int retval; 12153 void (*fe_datamove)(union ctl_io *io); 12154 12155 /* 12156 * - Get the data from the host/HBA into local memory. 12157 * - DMA memory from the local controller to the remote controller. 12158 * - Send status back to the remote controller. 12159 */ 12160 12161 retval = ctl_datamove_remote_sgl_setup(io); 12162 if (retval != 0) 12163 return; 12164 12165 /* Switch the pointer over so the FETD knows what to do */ 12166 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12167 12168 /* 12169 * Use a custom move done callback, since we need to send completion 12170 * back to the other controller, not to the backend on this side. 12171 */ 12172 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12173 12174 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12175 12176 fe_datamove(io); 12177 12178 return; 12179 12180} 12181 12182static int 12183ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12184{ 12185#if 0 12186 char str[256]; 12187 char path_str[64]; 12188 struct sbuf sb; 12189#endif 12190 12191 /* 12192 * In this case, we had to malloc the memory locally. Free it. 12193 */ 12194 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12195 int i; 12196 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12197 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12198 } 12199 12200#if 0 12201 scsi_path_string(io, path_str, sizeof(path_str)); 12202 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12203 sbuf_cat(&sb, path_str); 12204 scsi_command_string(&io->scsiio, NULL, &sb); 12205 sbuf_printf(&sb, "\n"); 12206 sbuf_cat(&sb, path_str); 12207 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12208 io->scsiio.tag_num, io->scsiio.tag_type); 12209 sbuf_cat(&sb, path_str); 12210 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12211 io->io_hdr.flags, io->io_hdr.status); 12212 sbuf_finish(&sb); 12213 printk("%s", sbuf_data(&sb)); 12214#endif 12215 12216 12217 /* 12218 * The read is done, now we need to send status (good or bad) back 12219 * to the other side. 12220 */ 12221 ctl_send_datamove_done(io, /*have_lock*/ 0); 12222 12223 return (0); 12224} 12225 12226static void 12227ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12228{ 12229 union ctl_io *io; 12230 void (*fe_datamove)(union ctl_io *io); 12231 12232 io = rq->context; 12233 12234 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12235 printf("%s: ISC DMA read failed with error %d", __func__, 12236 rq->ret); 12237 ctl_set_internal_failure(&io->scsiio, 12238 /*sks_valid*/ 1, 12239 /*retry_count*/ rq->ret); 12240 } 12241 12242 ctl_dt_req_free(rq); 12243 12244 /* Switch the pointer over so the FETD knows what to do */ 12245 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12246 12247 /* 12248 * Use a custom move done callback, since we need to send completion 12249 * back to the other controller, not to the backend on this side. 12250 */ 12251 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12252 12253 /* XXX KDM add checks like the ones in ctl_datamove? */ 12254 12255 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12256 12257 fe_datamove(io); 12258} 12259 12260static int 12261ctl_datamove_remote_sgl_setup(union ctl_io *io) 12262{ 12263 struct ctl_sg_entry *local_sglist, *remote_sglist; 12264 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12265 struct ctl_softc *softc; 12266 int retval; 12267 int i; 12268 12269 retval = 0; 12270 softc = control_softc; 12271 12272 local_sglist = io->io_hdr.local_sglist; 12273 local_dma_sglist = io->io_hdr.local_dma_sglist; 12274 remote_sglist = io->io_hdr.remote_sglist; 12275 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12276 12277 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12278 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12279 local_sglist[i].len = remote_sglist[i].len; 12280 12281 /* 12282 * XXX Detect the situation where the RS-level I/O 12283 * redirector on the other side has already read the 12284 * data off of the AOR RS on this side, and 12285 * transferred it to remote (mirror) memory on the 12286 * other side. Since we already have the data in 12287 * memory here, we just need to use it. 12288 * 12289 * XXX KDM this can probably be removed once we 12290 * get the cache device code in and take the 12291 * current AOR implementation out. 12292 */ 12293#ifdef NEEDTOPORT 12294 if ((remote_sglist[i].addr >= 12295 (void *)vtophys(softc->mirr->addr)) 12296 && (remote_sglist[i].addr < 12297 ((void *)vtophys(softc->mirr->addr) + 12298 CacheMirrorOffset))) { 12299 local_sglist[i].addr = remote_sglist[i].addr - 12300 CacheMirrorOffset; 12301 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12302 CTL_FLAG_DATA_IN) 12303 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12304 } else { 12305 local_sglist[i].addr = remote_sglist[i].addr + 12306 CacheMirrorOffset; 12307 } 12308#endif 12309#if 0 12310 printf("%s: local %p, remote %p, len %d\n", 12311 __func__, local_sglist[i].addr, 12312 remote_sglist[i].addr, local_sglist[i].len); 12313#endif 12314 } 12315 } else { 12316 uint32_t len_to_go; 12317 12318 /* 12319 * In this case, we don't have automatically allocated 12320 * memory for this I/O on this controller. This typically 12321 * happens with internal CTL I/O -- e.g. inquiry, mode 12322 * sense, etc. Anything coming from RAIDCore will have 12323 * a mirror area available. 12324 */ 12325 len_to_go = io->scsiio.kern_data_len; 12326 12327 /* 12328 * Clear the no datasync flag, we have to use malloced 12329 * buffers. 12330 */ 12331 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12332 12333 /* 12334 * The difficult thing here is that the size of the various 12335 * S/G segments may be different than the size from the 12336 * remote controller. That'll make it harder when DMAing 12337 * the data back to the other side. 12338 */ 12339 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12340 sizeof(io->io_hdr.remote_sglist[0])) && 12341 (len_to_go > 0); i++) { 12342 local_sglist[i].len = ctl_min(len_to_go, 131072); 12343 CTL_SIZE_8B(local_dma_sglist[i].len, 12344 local_sglist[i].len); 12345 local_sglist[i].addr = 12346 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12347 12348 local_dma_sglist[i].addr = local_sglist[i].addr; 12349 12350 if (local_sglist[i].addr == NULL) { 12351 int j; 12352 12353 printf("malloc failed for %zd bytes!", 12354 local_dma_sglist[i].len); 12355 for (j = 0; j < i; j++) { 12356 free(local_sglist[j].addr, M_CTL); 12357 } 12358 ctl_set_internal_failure(&io->scsiio, 12359 /*sks_valid*/ 1, 12360 /*retry_count*/ 4857); 12361 retval = 1; 12362 goto bailout_error; 12363 12364 } 12365 /* XXX KDM do we need a sync here? */ 12366 12367 len_to_go -= local_sglist[i].len; 12368 } 12369 /* 12370 * Reset the number of S/G entries accordingly. The 12371 * original number of S/G entries is available in 12372 * rem_sg_entries. 12373 */ 12374 io->scsiio.kern_sg_entries = i; 12375 12376#if 0 12377 printf("%s: kern_sg_entries = %d\n", __func__, 12378 io->scsiio.kern_sg_entries); 12379 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12380 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12381 local_sglist[i].addr, local_sglist[i].len, 12382 local_dma_sglist[i].len); 12383#endif 12384 } 12385 12386 12387 return (retval); 12388 12389bailout_error: 12390 12391 ctl_send_datamove_done(io, /*have_lock*/ 0); 12392 12393 return (retval); 12394} 12395 12396static int 12397ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12398 ctl_ha_dt_cb callback) 12399{ 12400 struct ctl_ha_dt_req *rq; 12401 struct ctl_sg_entry *remote_sglist, *local_sglist; 12402 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12403 uint32_t local_used, remote_used, total_used; 12404 int retval; 12405 int i, j; 12406 12407 retval = 0; 12408 12409 rq = ctl_dt_req_alloc(); 12410 12411 /* 12412 * If we failed to allocate the request, and if the DMA didn't fail 12413 * anyway, set busy status. This is just a resource allocation 12414 * failure. 12415 */ 12416 if ((rq == NULL) 12417 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12418 ctl_set_busy(&io->scsiio); 12419 12420 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12421 12422 if (rq != NULL) 12423 ctl_dt_req_free(rq); 12424 12425 /* 12426 * The data move failed. We need to return status back 12427 * to the other controller. No point in trying to DMA 12428 * data to the remote controller. 12429 */ 12430 12431 ctl_send_datamove_done(io, /*have_lock*/ 0); 12432 12433 retval = 1; 12434 12435 goto bailout; 12436 } 12437 12438 local_sglist = io->io_hdr.local_sglist; 12439 local_dma_sglist = io->io_hdr.local_dma_sglist; 12440 remote_sglist = io->io_hdr.remote_sglist; 12441 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12442 local_used = 0; 12443 remote_used = 0; 12444 total_used = 0; 12445 12446 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12447 rq->ret = CTL_HA_STATUS_SUCCESS; 12448 rq->context = io; 12449 callback(rq); 12450 goto bailout; 12451 } 12452 12453 /* 12454 * Pull/push the data over the wire from/to the other controller. 12455 * This takes into account the possibility that the local and 12456 * remote sglists may not be identical in terms of the size of 12457 * the elements and the number of elements. 12458 * 12459 * One fundamental assumption here is that the length allocated for 12460 * both the local and remote sglists is identical. Otherwise, we've 12461 * essentially got a coding error of some sort. 12462 */ 12463 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12464 int isc_ret; 12465 uint32_t cur_len, dma_length; 12466 uint8_t *tmp_ptr; 12467 12468 rq->id = CTL_HA_DATA_CTL; 12469 rq->command = command; 12470 rq->context = io; 12471 12472 /* 12473 * Both pointers should be aligned. But it is possible 12474 * that the allocation length is not. They should both 12475 * also have enough slack left over at the end, though, 12476 * to round up to the next 8 byte boundary. 12477 */ 12478 cur_len = ctl_min(local_sglist[i].len - local_used, 12479 remote_sglist[j].len - remote_used); 12480 12481 /* 12482 * In this case, we have a size issue and need to decrease 12483 * the size, except in the case where we actually have less 12484 * than 8 bytes left. In that case, we need to increase 12485 * the DMA length to get the last bit. 12486 */ 12487 if ((cur_len & 0x7) != 0) { 12488 if (cur_len > 0x7) { 12489 cur_len = cur_len - (cur_len & 0x7); 12490 dma_length = cur_len; 12491 } else { 12492 CTL_SIZE_8B(dma_length, cur_len); 12493 } 12494 12495 } else 12496 dma_length = cur_len; 12497 12498 /* 12499 * If we had to allocate memory for this I/O, instead of using 12500 * the non-cached mirror memory, we'll need to flush the cache 12501 * before trying to DMA to the other controller. 12502 * 12503 * We could end up doing this multiple times for the same 12504 * segment if we have a larger local segment than remote 12505 * segment. That shouldn't be an issue. 12506 */ 12507 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12508 /* 12509 * XXX KDM use bus_dmamap_sync() here. 12510 */ 12511 } 12512 12513 rq->size = dma_length; 12514 12515 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12516 tmp_ptr += local_used; 12517 12518 /* Use physical addresses when talking to ISC hardware */ 12519 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12520 /* XXX KDM use busdma */ 12521#if 0 12522 rq->local = vtophys(tmp_ptr); 12523#endif 12524 } else 12525 rq->local = tmp_ptr; 12526 12527 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12528 tmp_ptr += remote_used; 12529 rq->remote = tmp_ptr; 12530 12531 rq->callback = NULL; 12532 12533 local_used += cur_len; 12534 if (local_used >= local_sglist[i].len) { 12535 i++; 12536 local_used = 0; 12537 } 12538 12539 remote_used += cur_len; 12540 if (remote_used >= remote_sglist[j].len) { 12541 j++; 12542 remote_used = 0; 12543 } 12544 total_used += cur_len; 12545 12546 if (total_used >= io->scsiio.kern_data_len) 12547 rq->callback = callback; 12548 12549 if ((rq->size & 0x7) != 0) { 12550 printf("%s: warning: size %d is not on 8b boundary\n", 12551 __func__, rq->size); 12552 } 12553 if (((uintptr_t)rq->local & 0x7) != 0) { 12554 printf("%s: warning: local %p not on 8b boundary\n", 12555 __func__, rq->local); 12556 } 12557 if (((uintptr_t)rq->remote & 0x7) != 0) { 12558 printf("%s: warning: remote %p not on 8b boundary\n", 12559 __func__, rq->local); 12560 } 12561#if 0 12562 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12563 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12564 rq->local, rq->remote, rq->size); 12565#endif 12566 12567 isc_ret = ctl_dt_single(rq); 12568 if (isc_ret == CTL_HA_STATUS_WAIT) 12569 continue; 12570 12571 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12572 rq->ret = CTL_HA_STATUS_SUCCESS; 12573 } else { 12574 rq->ret = isc_ret; 12575 } 12576 callback(rq); 12577 goto bailout; 12578 } 12579 12580bailout: 12581 return (retval); 12582 12583} 12584 12585static void 12586ctl_datamove_remote_read(union ctl_io *io) 12587{ 12588 int retval; 12589 int i; 12590 12591 /* 12592 * This will send an error to the other controller in the case of a 12593 * failure. 12594 */ 12595 retval = ctl_datamove_remote_sgl_setup(io); 12596 if (retval != 0) 12597 return; 12598 12599 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12600 ctl_datamove_remote_read_cb); 12601 if ((retval != 0) 12602 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12603 /* 12604 * Make sure we free memory if there was an error.. The 12605 * ctl_datamove_remote_xfer() function will send the 12606 * datamove done message, or call the callback with an 12607 * error if there is a problem. 12608 */ 12609 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12610 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12611 } 12612 12613 return; 12614} 12615 12616/* 12617 * Process a datamove request from the other controller. This is used for 12618 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12619 * first. Once that is complete, the data gets DMAed into the remote 12620 * controller's memory. For reads, we DMA from the remote controller's 12621 * memory into our memory first, and then move it out to the FETD. 12622 */ 12623static void 12624ctl_datamove_remote(union ctl_io *io) 12625{ 12626 struct ctl_softc *softc; 12627 12628 softc = control_softc; 12629 12630 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12631 12632 /* 12633 * Note that we look for an aborted I/O here, but don't do some of 12634 * the other checks that ctl_datamove() normally does. We don't 12635 * need to run the task queue, because this I/O is on the ISC 12636 * queue, which is executed by the work thread after the task queue. 12637 * We don't need to run the datamove delay code, since that should 12638 * have been done if need be on the other controller. 12639 */ 12640 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12641 12642 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12643 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12644 io->io_hdr.nexus.targ_port, 12645 io->io_hdr.nexus.targ_target.id, 12646 io->io_hdr.nexus.targ_lun); 12647 io->io_hdr.status = CTL_CMD_ABORTED; 12648 io->io_hdr.port_status = 31338; 12649 12650 ctl_send_datamove_done(io, /*have_lock*/ 0); 12651 12652 return; 12653 } 12654 12655 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12656 ctl_datamove_remote_write(io); 12657 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12658 ctl_datamove_remote_read(io); 12659 } else { 12660 union ctl_ha_msg msg; 12661 struct scsi_sense_data *sense; 12662 uint8_t sks[3]; 12663 int retry_count; 12664 12665 memset(&msg, 0, sizeof(msg)); 12666 12667 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12668 msg.hdr.status = CTL_SCSI_ERROR; 12669 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12670 12671 retry_count = 4243; 12672 12673 sense = &msg.scsi.sense_data; 12674 sks[0] = SSD_SCS_VALID; 12675 sks[1] = (retry_count >> 8) & 0xff; 12676 sks[2] = retry_count & 0xff; 12677 12678 /* "Internal target failure" */ 12679 scsi_set_sense_data(sense, 12680 /*sense_format*/ SSD_TYPE_NONE, 12681 /*current_error*/ 1, 12682 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12683 /*asc*/ 0x44, 12684 /*ascq*/ 0x00, 12685 /*type*/ SSD_ELEM_SKS, 12686 /*size*/ sizeof(sks), 12687 /*data*/ sks, 12688 SSD_ELEM_NONE); 12689 12690 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12691 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12692 ctl_failover_io(io, /*have_lock*/ 1); 12693 return; 12694 } 12695 12696 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12697 CTL_HA_STATUS_SUCCESS) { 12698 /* XXX KDM what to do if this fails? */ 12699 } 12700 return; 12701 } 12702 12703} 12704 12705static int 12706ctl_process_done(union ctl_io *io) 12707{ 12708 struct ctl_lun *lun; 12709 struct ctl_softc *ctl_softc; 12710 void (*fe_done)(union ctl_io *io); 12711 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12712 12713 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12714 12715 fe_done = 12716 control_softc->ctl_ports[targ_port]->fe_done; 12717 12718#ifdef CTL_TIME_IO 12719 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12720 char str[256]; 12721 char path_str[64]; 12722 struct sbuf sb; 12723 12724 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12725 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12726 12727 sbuf_cat(&sb, path_str); 12728 switch (io->io_hdr.io_type) { 12729 case CTL_IO_SCSI: 12730 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12731 sbuf_printf(&sb, "\n"); 12732 sbuf_cat(&sb, path_str); 12733 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12734 io->scsiio.tag_num, io->scsiio.tag_type); 12735 break; 12736 case CTL_IO_TASK: 12737 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12738 "Tag Type: %d\n", io->taskio.task_action, 12739 io->taskio.tag_num, io->taskio.tag_type); 12740 break; 12741 default: 12742 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12743 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12744 break; 12745 } 12746 sbuf_cat(&sb, path_str); 12747 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12748 (intmax_t)time_uptime - io->io_hdr.start_time); 12749 sbuf_finish(&sb); 12750 printf("%s", sbuf_data(&sb)); 12751 } 12752#endif /* CTL_TIME_IO */ 12753 12754 switch (io->io_hdr.io_type) { 12755 case CTL_IO_SCSI: 12756 break; 12757 case CTL_IO_TASK: 12758 if (bootverbose || verbose > 0) 12759 ctl_io_error_print(io, NULL); 12760 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12761 ctl_free_io(io); 12762 else 12763 fe_done(io); 12764 return (CTL_RETVAL_COMPLETE); 12765 break; 12766 default: 12767 printf("ctl_process_done: invalid io type %d\n", 12768 io->io_hdr.io_type); 12769 panic("ctl_process_done: invalid io type %d\n", 12770 io->io_hdr.io_type); 12771 break; /* NOTREACHED */ 12772 } 12773 12774 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12775 if (lun == NULL) { 12776 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12777 io->io_hdr.nexus.targ_mapped_lun)); 12778 fe_done(io); 12779 goto bailout; 12780 } 12781 ctl_softc = lun->ctl_softc; 12782 12783 mtx_lock(&lun->lun_lock); 12784 12785 /* 12786 * Check to see if we have any errors to inject here. We only 12787 * inject errors for commands that don't already have errors set. 12788 */ 12789 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12790 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12791 ctl_inject_error(lun, io); 12792 12793 /* 12794 * XXX KDM how do we treat commands that aren't completed 12795 * successfully? 12796 * 12797 * XXX KDM should we also track I/O latency? 12798 */ 12799 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS) { 12800 uint32_t blocksize; 12801#ifdef CTL_TIME_IO 12802 struct bintime cur_bt; 12803#endif 12804 12805 if ((lun->be_lun != NULL) 12806 && (lun->be_lun->blocksize != 0)) 12807 blocksize = lun->be_lun->blocksize; 12808 else 12809 blocksize = 512; 12810 12811 switch (io->io_hdr.io_type) { 12812 case CTL_IO_SCSI: { 12813 int isread; 12814 struct ctl_lba_len_flags *lbalen; 12815 12816 isread = 0; 12817 switch (io->scsiio.cdb[0]) { 12818 case READ_6: 12819 case READ_10: 12820 case READ_12: 12821 case READ_16: 12822 isread = 1; 12823 /* FALLTHROUGH */ 12824 case WRITE_6: 12825 case WRITE_10: 12826 case WRITE_12: 12827 case WRITE_16: 12828 case WRITE_VERIFY_10: 12829 case WRITE_VERIFY_12: 12830 case WRITE_VERIFY_16: 12831 lbalen = (struct ctl_lba_len_flags *) 12832 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 12833 12834 if (isread) { 12835 lun->stats.ports[targ_port].bytes[CTL_STATS_READ] += 12836 lbalen->len * blocksize; 12837 lun->stats.ports[targ_port].operations[CTL_STATS_READ]++; 12838 12839#ifdef CTL_TIME_IO 12840 bintime_add( 12841 &lun->stats.ports[targ_port].dma_time[CTL_STATS_READ], 12842 &io->io_hdr.dma_bt); 12843 lun->stats.ports[targ_port].num_dmas[CTL_STATS_READ] += 12844 io->io_hdr.num_dmas; 12845 getbintime(&cur_bt); 12846 bintime_sub(&cur_bt, 12847 &io->io_hdr.start_bt); 12848 12849 bintime_add( 12850 &lun->stats.ports[targ_port].time[CTL_STATS_READ], 12851 &cur_bt); 12852 12853#if 0 12854 cs_prof_gettime(&cur_ticks); 12855 lun->stats.time[CTL_STATS_READ] += 12856 cur_ticks - 12857 io->io_hdr.start_ticks; 12858#endif 12859#if 0 12860 lun->stats.time[CTL_STATS_READ] += 12861 jiffies - io->io_hdr.start_time; 12862#endif 12863#endif /* CTL_TIME_IO */ 12864 } else { 12865 lun->stats.ports[targ_port].bytes[CTL_STATS_WRITE] += 12866 lbalen->len * blocksize; 12867 lun->stats.ports[targ_port].operations[ 12868 CTL_STATS_WRITE]++; 12869 12870#ifdef CTL_TIME_IO 12871 bintime_add( 12872 &lun->stats.ports[targ_port].dma_time[CTL_STATS_WRITE], 12873 &io->io_hdr.dma_bt); 12874 lun->stats.ports[targ_port].num_dmas[CTL_STATS_WRITE] += 12875 io->io_hdr.num_dmas; 12876 getbintime(&cur_bt); 12877 bintime_sub(&cur_bt, 12878 &io->io_hdr.start_bt); 12879 12880 bintime_add( 12881 &lun->stats.ports[targ_port].time[CTL_STATS_WRITE], 12882 &cur_bt); 12883#if 0 12884 cs_prof_gettime(&cur_ticks); 12885 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12886 cur_ticks - 12887 io->io_hdr.start_ticks; 12888 lun->stats.ports[targ_port].time[CTL_STATS_WRITE] += 12889 jiffies - io->io_hdr.start_time; 12890#endif 12891#endif /* CTL_TIME_IO */ 12892 } 12893 break; 12894 default: 12895 lun->stats.ports[targ_port].operations[CTL_STATS_NO_IO]++; 12896 12897#ifdef CTL_TIME_IO 12898 bintime_add( 12899 &lun->stats.ports[targ_port].dma_time[CTL_STATS_NO_IO], 12900 &io->io_hdr.dma_bt); 12901 lun->stats.ports[targ_port].num_dmas[CTL_STATS_NO_IO] += 12902 io->io_hdr.num_dmas; 12903 getbintime(&cur_bt); 12904 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 12905 12906 bintime_add(&lun->stats.ports[targ_port].time[CTL_STATS_NO_IO], 12907 &cur_bt); 12908 12909#if 0 12910 cs_prof_gettime(&cur_ticks); 12911 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12912 cur_ticks - 12913 io->io_hdr.start_ticks; 12914 lun->stats.ports[targ_port].time[CTL_STATS_NO_IO] += 12915 jiffies - io->io_hdr.start_time; 12916#endif 12917#endif /* CTL_TIME_IO */ 12918 break; 12919 } 12920 break; 12921 } 12922 default: 12923 break; 12924 } 12925 } 12926 12927 /* 12928 * Remove this from the OOA queue. 12929 */ 12930 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 12931 12932 /* 12933 * Run through the blocked queue on this LUN and see if anything 12934 * has become unblocked, now that this transaction is done. 12935 */ 12936 ctl_check_blocked(lun); 12937 12938 /* 12939 * If the LUN has been invalidated, free it if there is nothing 12940 * left on its OOA queue. 12941 */ 12942 if ((lun->flags & CTL_LUN_INVALID) 12943 && TAILQ_EMPTY(&lun->ooa_queue)) { 12944 mtx_unlock(&lun->lun_lock); 12945 mtx_lock(&ctl_softc->ctl_lock); 12946 ctl_free_lun(lun); 12947 mtx_unlock(&ctl_softc->ctl_lock); 12948 } else 12949 mtx_unlock(&lun->lun_lock); 12950 12951 /* 12952 * If this command has been aborted, make sure we set the status 12953 * properly. The FETD is responsible for freeing the I/O and doing 12954 * whatever it needs to do to clean up its state. 12955 */ 12956 if (io->io_hdr.flags & CTL_FLAG_ABORT) 12957 io->io_hdr.status = CTL_CMD_ABORTED; 12958 12959 /* 12960 * We print out status for every task management command. For SCSI 12961 * commands, we filter out any unit attention errors; they happen 12962 * on every boot, and would clutter up the log. Note: task 12963 * management commands aren't printed here, they are printed above, 12964 * since they should never even make it down here. 12965 */ 12966 switch (io->io_hdr.io_type) { 12967 case CTL_IO_SCSI: { 12968 int error_code, sense_key, asc, ascq; 12969 12970 sense_key = 0; 12971 12972 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 12973 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 12974 /* 12975 * Since this is just for printing, no need to 12976 * show errors here. 12977 */ 12978 scsi_extract_sense_len(&io->scsiio.sense_data, 12979 io->scsiio.sense_len, 12980 &error_code, 12981 &sense_key, 12982 &asc, 12983 &ascq, 12984 /*show_errors*/ 0); 12985 } 12986 12987 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 12988 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 12989 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 12990 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 12991 12992 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 12993 ctl_softc->skipped_prints++; 12994 } else { 12995 uint32_t skipped_prints; 12996 12997 skipped_prints = ctl_softc->skipped_prints; 12998 12999 ctl_softc->skipped_prints = 0; 13000 ctl_softc->last_print_jiffies = time_uptime; 13001 13002 if (skipped_prints > 0) { 13003#ifdef NEEDTOPORT 13004 csevent_log(CSC_CTL | CSC_SHELF_SW | 13005 CTL_ERROR_REPORT, 13006 csevent_LogType_Trace, 13007 csevent_Severity_Information, 13008 csevent_AlertLevel_Green, 13009 csevent_FRU_Firmware, 13010 csevent_FRU_Unknown, 13011 "High CTL error volume, %d prints " 13012 "skipped", skipped_prints); 13013#endif 13014 } 13015 if (bootverbose || verbose > 0) 13016 ctl_io_error_print(io, NULL); 13017 } 13018 } 13019 break; 13020 } 13021 case CTL_IO_TASK: 13022 if (bootverbose || verbose > 0) 13023 ctl_io_error_print(io, NULL); 13024 break; 13025 default: 13026 break; 13027 } 13028 13029 /* 13030 * Tell the FETD or the other shelf controller we're done with this 13031 * command. Note that only SCSI commands get to this point. Task 13032 * management commands are completed above. 13033 * 13034 * We only send status to the other controller if we're in XFER 13035 * mode. In SER_ONLY mode, the I/O is done on the controller that 13036 * received the I/O (from CTL's perspective), and so the status is 13037 * generated there. 13038 * 13039 * XXX KDM if we hold the lock here, we could cause a deadlock 13040 * if the frontend comes back in in this context to queue 13041 * something. 13042 */ 13043 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 13044 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 13045 union ctl_ha_msg msg; 13046 13047 memset(&msg, 0, sizeof(msg)); 13048 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 13049 msg.hdr.original_sc = io->io_hdr.original_sc; 13050 msg.hdr.nexus = io->io_hdr.nexus; 13051 msg.hdr.status = io->io_hdr.status; 13052 msg.scsi.scsi_status = io->scsiio.scsi_status; 13053 msg.scsi.tag_num = io->scsiio.tag_num; 13054 msg.scsi.tag_type = io->scsiio.tag_type; 13055 msg.scsi.sense_len = io->scsiio.sense_len; 13056 msg.scsi.sense_residual = io->scsiio.sense_residual; 13057 msg.scsi.residual = io->scsiio.residual; 13058 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 13059 sizeof(io->scsiio.sense_data)); 13060 /* 13061 * We copy this whether or not this is an I/O-related 13062 * command. Otherwise, we'd have to go and check to see 13063 * whether it's a read/write command, and it really isn't 13064 * worth it. 13065 */ 13066 memcpy(&msg.scsi.lbalen, 13067 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 13068 sizeof(msg.scsi.lbalen)); 13069 13070 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 13071 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 13072 /* XXX do something here */ 13073 } 13074 13075 ctl_free_io(io); 13076 } else 13077 fe_done(io); 13078 13079bailout: 13080 13081 return (CTL_RETVAL_COMPLETE); 13082} 13083 13084/* 13085 * Front end should call this if it doesn't do autosense. When the request 13086 * sense comes back in from the initiator, we'll dequeue this and send it. 13087 */ 13088int 13089ctl_queue_sense(union ctl_io *io) 13090{ 13091 struct ctl_lun *lun; 13092 struct ctl_softc *ctl_softc; 13093 uint32_t initidx, targ_lun; 13094 13095 ctl_softc = control_softc; 13096 13097 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13098 13099 /* 13100 * LUN lookup will likely move to the ctl_work_thread() once we 13101 * have our new queueing infrastructure (that doesn't put things on 13102 * a per-LUN queue initially). That is so that we can handle 13103 * things like an INQUIRY to a LUN that we don't have enabled. We 13104 * can't deal with that right now. 13105 */ 13106 mtx_lock(&ctl_softc->ctl_lock); 13107 13108 /* 13109 * If we don't have a LUN for this, just toss the sense 13110 * information. 13111 */ 13112 targ_lun = io->io_hdr.nexus.targ_lun; 13113 if (io->io_hdr.nexus.lun_map_fn != NULL) 13114 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 13115 if ((targ_lun < CTL_MAX_LUNS) 13116 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13117 lun = ctl_softc->ctl_luns[targ_lun]; 13118 else 13119 goto bailout; 13120 13121 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13122 13123 mtx_lock(&lun->lun_lock); 13124 /* 13125 * Already have CA set for this LUN...toss the sense information. 13126 */ 13127 if (ctl_is_set(lun->have_ca, initidx)) { 13128 mtx_unlock(&lun->lun_lock); 13129 goto bailout; 13130 } 13131 13132 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13133 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13134 sizeof(io->scsiio.sense_data))); 13135 ctl_set_mask(lun->have_ca, initidx); 13136 mtx_unlock(&lun->lun_lock); 13137 13138bailout: 13139 mtx_unlock(&ctl_softc->ctl_lock); 13140 13141 ctl_free_io(io); 13142 13143 return (CTL_RETVAL_COMPLETE); 13144} 13145 13146/* 13147 * Primary command inlet from frontend ports. All SCSI and task I/O 13148 * requests must go through this function. 13149 */ 13150int 13151ctl_queue(union ctl_io *io) 13152{ 13153 struct ctl_softc *ctl_softc; 13154 13155 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13156 13157 ctl_softc = control_softc; 13158 13159#ifdef CTL_TIME_IO 13160 io->io_hdr.start_time = time_uptime; 13161 getbintime(&io->io_hdr.start_bt); 13162#endif /* CTL_TIME_IO */ 13163 13164 /* Map FE-specific LUN ID into global one. */ 13165 if (io->io_hdr.nexus.lun_map_fn != NULL) 13166 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.lun_map_fn( 13167 io->io_hdr.nexus.lun_map_arg, io->io_hdr.nexus.targ_lun); 13168 else 13169 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.targ_lun; 13170 13171 switch (io->io_hdr.io_type) { 13172 case CTL_IO_SCSI: 13173 ctl_enqueue_incoming(io); 13174 break; 13175 case CTL_IO_TASK: 13176 ctl_run_task(io); 13177 break; 13178 default: 13179 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13180 return (-EINVAL); 13181 } 13182 13183 return (CTL_RETVAL_COMPLETE); 13184} 13185 13186#ifdef CTL_IO_DELAY 13187static void 13188ctl_done_timer_wakeup(void *arg) 13189{ 13190 union ctl_io *io; 13191 13192 io = (union ctl_io *)arg; 13193 ctl_done(io); 13194} 13195#endif /* CTL_IO_DELAY */ 13196 13197void 13198ctl_done(union ctl_io *io) 13199{ 13200 struct ctl_softc *ctl_softc; 13201 13202 ctl_softc = control_softc; 13203 13204 /* 13205 * Enable this to catch duplicate completion issues. 13206 */ 13207#if 0 13208 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13209 printf("%s: type %d msg %d cdb %x iptl: " 13210 "%d:%d:%d:%d tag 0x%04x " 13211 "flag %#x status %x\n", 13212 __func__, 13213 io->io_hdr.io_type, 13214 io->io_hdr.msg_type, 13215 io->scsiio.cdb[0], 13216 io->io_hdr.nexus.initid.id, 13217 io->io_hdr.nexus.targ_port, 13218 io->io_hdr.nexus.targ_target.id, 13219 io->io_hdr.nexus.targ_lun, 13220 (io->io_hdr.io_type == 13221 CTL_IO_TASK) ? 13222 io->taskio.tag_num : 13223 io->scsiio.tag_num, 13224 io->io_hdr.flags, 13225 io->io_hdr.status); 13226 } else 13227 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13228#endif 13229 13230 /* 13231 * This is an internal copy of an I/O, and should not go through 13232 * the normal done processing logic. 13233 */ 13234 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) 13235 return; 13236 13237 /* 13238 * We need to send a msg to the serializing shelf to finish the IO 13239 * as well. We don't send a finish message to the other shelf if 13240 * this is a task management command. Task management commands 13241 * aren't serialized in the OOA queue, but rather just executed on 13242 * both shelf controllers for commands that originated on that 13243 * controller. 13244 */ 13245 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13246 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13247 union ctl_ha_msg msg_io; 13248 13249 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13250 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13251 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13252 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13253 } 13254 /* continue on to finish IO */ 13255 } 13256#ifdef CTL_IO_DELAY 13257 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13258 struct ctl_lun *lun; 13259 13260 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13261 13262 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13263 } else { 13264 struct ctl_lun *lun; 13265 13266 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13267 13268 if ((lun != NULL) 13269 && (lun->delay_info.done_delay > 0)) { 13270 struct callout *callout; 13271 13272 callout = (struct callout *)&io->io_hdr.timer_bytes; 13273 callout_init(callout, /*mpsafe*/ 1); 13274 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13275 callout_reset(callout, 13276 lun->delay_info.done_delay * hz, 13277 ctl_done_timer_wakeup, io); 13278 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13279 lun->delay_info.done_delay = 0; 13280 return; 13281 } 13282 } 13283#endif /* CTL_IO_DELAY */ 13284 13285 ctl_enqueue_done(io); 13286} 13287 13288int 13289ctl_isc(struct ctl_scsiio *ctsio) 13290{ 13291 struct ctl_lun *lun; 13292 int retval; 13293 13294 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13295 13296 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13297 13298 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13299 13300 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13301 13302 return (retval); 13303} 13304 13305 13306static void 13307ctl_work_thread(void *arg) 13308{ 13309 struct ctl_thread *thr = (struct ctl_thread *)arg; 13310 struct ctl_softc *softc = thr->ctl_softc; 13311 union ctl_io *io; 13312 int retval; 13313 13314 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13315 13316 for (;;) { 13317 retval = 0; 13318 13319 /* 13320 * We handle the queues in this order: 13321 * - ISC 13322 * - done queue (to free up resources, unblock other commands) 13323 * - RtR queue 13324 * - incoming queue 13325 * 13326 * If those queues are empty, we break out of the loop and 13327 * go to sleep. 13328 */ 13329 mtx_lock(&thr->queue_lock); 13330 io = (union ctl_io *)STAILQ_FIRST(&thr->isc_queue); 13331 if (io != NULL) { 13332 STAILQ_REMOVE_HEAD(&thr->isc_queue, links); 13333 mtx_unlock(&thr->queue_lock); 13334 ctl_handle_isc(io); 13335 continue; 13336 } 13337 io = (union ctl_io *)STAILQ_FIRST(&thr->done_queue); 13338 if (io != NULL) { 13339 STAILQ_REMOVE_HEAD(&thr->done_queue, links); 13340 /* clear any blocked commands, call fe_done */ 13341 mtx_unlock(&thr->queue_lock); 13342 retval = ctl_process_done(io); 13343 continue; 13344 } 13345 if (!ctl_pause_rtr) { 13346 io = (union ctl_io *)STAILQ_FIRST(&thr->rtr_queue); 13347 if (io != NULL) { 13348 STAILQ_REMOVE_HEAD(&thr->rtr_queue, links); 13349 mtx_unlock(&thr->queue_lock); 13350 retval = ctl_scsiio(&io->scsiio); 13351 if (retval != CTL_RETVAL_COMPLETE) 13352 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13353 continue; 13354 } 13355 } 13356 io = (union ctl_io *)STAILQ_FIRST(&thr->incoming_queue); 13357 if (io != NULL) { 13358 STAILQ_REMOVE_HEAD(&thr->incoming_queue, links); 13359 mtx_unlock(&thr->queue_lock); 13360 ctl_scsiio_precheck(softc, &io->scsiio); 13361 continue; 13362 } 13363 13364 /* Sleep until we have something to do. */ 13365 mtx_sleep(thr, &thr->queue_lock, PDROP | PRIBIO, "-", 0); 13366 } 13367} 13368 13369static void 13370ctl_lun_thread(void *arg) 13371{ 13372 struct ctl_softc *softc = (struct ctl_softc *)arg; 13373 struct ctl_be_lun *be_lun; 13374 int retval; 13375 13376 CTL_DEBUG_PRINT(("ctl_lun_thread starting\n")); 13377 13378 for (;;) { 13379 retval = 0; 13380 mtx_lock(&softc->ctl_lock); 13381 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13382 if (be_lun != NULL) { 13383 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13384 mtx_unlock(&softc->ctl_lock); 13385 ctl_create_lun(be_lun); 13386 continue; 13387 } 13388 13389 /* Sleep until we have something to do. */ 13390 mtx_sleep(&softc->pending_lun_queue, &softc->ctl_lock, 13391 PDROP | PRIBIO, "-", 0); 13392 } 13393} 13394 13395static void 13396ctl_enqueue_incoming(union ctl_io *io) 13397{ 13398 struct ctl_softc *softc = control_softc; 13399 struct ctl_thread *thr; 13400 13401 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13402 mtx_lock(&thr->queue_lock); 13403 STAILQ_INSERT_TAIL(&thr->incoming_queue, &io->io_hdr, links); 13404 mtx_unlock(&thr->queue_lock); 13405 wakeup(thr); 13406} 13407 13408static void 13409ctl_enqueue_rtr(union ctl_io *io) 13410{ 13411 struct ctl_softc *softc = control_softc; 13412 struct ctl_thread *thr; 13413 13414 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13415 mtx_lock(&thr->queue_lock); 13416 STAILQ_INSERT_TAIL(&thr->rtr_queue, &io->io_hdr, links); 13417 mtx_unlock(&thr->queue_lock); 13418 wakeup(thr); 13419} 13420 13421static void 13422ctl_enqueue_done(union ctl_io *io) 13423{ 13424 struct ctl_softc *softc = control_softc; 13425 struct ctl_thread *thr; 13426 13427 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13428 mtx_lock(&thr->queue_lock); 13429 STAILQ_INSERT_TAIL(&thr->done_queue, &io->io_hdr, links); 13430 mtx_unlock(&thr->queue_lock); 13431 wakeup(thr); 13432} 13433 13434static void 13435ctl_enqueue_isc(union ctl_io *io) 13436{ 13437 struct ctl_softc *softc = control_softc; 13438 struct ctl_thread *thr; 13439 13440 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13441 mtx_lock(&thr->queue_lock); 13442 STAILQ_INSERT_TAIL(&thr->isc_queue, &io->io_hdr, links); 13443 mtx_unlock(&thr->queue_lock); 13444 wakeup(thr); 13445} 13446 13447/* Initialization and failover */ 13448 13449void 13450ctl_init_isc_msg(void) 13451{ 13452 printf("CTL: Still calling this thing\n"); 13453} 13454 13455/* 13456 * Init component 13457 * Initializes component into configuration defined by bootMode 13458 * (see hasc-sv.c) 13459 * returns hasc_Status: 13460 * OK 13461 * ERROR - fatal error 13462 */ 13463static ctl_ha_comp_status 13464ctl_isc_init(struct ctl_ha_component *c) 13465{ 13466 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13467 13468 c->status = ret; 13469 return ret; 13470} 13471 13472/* Start component 13473 * Starts component in state requested. If component starts successfully, 13474 * it must set its own state to the requestrd state 13475 * When requested state is HASC_STATE_HA, the component may refine it 13476 * by adding _SLAVE or _MASTER flags. 13477 * Currently allowed state transitions are: 13478 * UNKNOWN->HA - initial startup 13479 * UNKNOWN->SINGLE - initial startup when no parter detected 13480 * HA->SINGLE - failover 13481 * returns ctl_ha_comp_status: 13482 * OK - component successfully started in requested state 13483 * FAILED - could not start the requested state, failover may 13484 * be possible 13485 * ERROR - fatal error detected, no future startup possible 13486 */ 13487static ctl_ha_comp_status 13488ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13489{ 13490 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13491 13492 printf("%s: go\n", __func__); 13493 13494 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13495 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13496 ctl_is_single = 0; 13497 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13498 != CTL_HA_STATUS_SUCCESS) { 13499 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13500 ret = CTL_HA_COMP_STATUS_ERROR; 13501 } 13502 } else if (CTL_HA_STATE_IS_HA(c->state) 13503 && CTL_HA_STATE_IS_SINGLE(state)){ 13504 // HA->SINGLE transition 13505 ctl_failover(); 13506 ctl_is_single = 1; 13507 } else { 13508 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13509 c->state, state); 13510 ret = CTL_HA_COMP_STATUS_ERROR; 13511 } 13512 if (CTL_HA_STATE_IS_SINGLE(state)) 13513 ctl_is_single = 1; 13514 13515 c->state = state; 13516 c->status = ret; 13517 return ret; 13518} 13519 13520/* 13521 * Quiesce component 13522 * The component must clear any error conditions (set status to OK) and 13523 * prepare itself to another Start call 13524 * returns ctl_ha_comp_status: 13525 * OK 13526 * ERROR 13527 */ 13528static ctl_ha_comp_status 13529ctl_isc_quiesce(struct ctl_ha_component *c) 13530{ 13531 int ret = CTL_HA_COMP_STATUS_OK; 13532 13533 ctl_pause_rtr = 1; 13534 c->status = ret; 13535 return ret; 13536} 13537 13538struct ctl_ha_component ctl_ha_component_ctlisc = 13539{ 13540 .name = "CTL ISC", 13541 .state = CTL_HA_STATE_UNKNOWN, 13542 .init = ctl_isc_init, 13543 .start = ctl_isc_start, 13544 .quiesce = ctl_isc_quiesce 13545}; 13546 13547/* 13548 * vim: ts=8 13549 */ 13550