ctl.c revision 268673
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: stable/10/sys/cam/ctl/ctl.c 268673 2014-07-15 16:49:35Z 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"); 454MALLOC_DEFINE(M_CTLIO, "ctlio", "Memory used for CTL requests"); 455 456static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 457 458static moduledata_t ctl_moduledata = { 459 "ctl", 460 ctl_module_event_handler, 461 NULL 462}; 463 464DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 465MODULE_VERSION(ctl, 1); 466 467static void 468ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 469 union ctl_ha_msg *msg_info) 470{ 471 struct ctl_scsiio *ctsio; 472 473 if (msg_info->hdr.original_sc == NULL) { 474 printf("%s: original_sc == NULL!\n", __func__); 475 /* XXX KDM now what? */ 476 return; 477 } 478 479 ctsio = &msg_info->hdr.original_sc->scsiio; 480 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 481 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 482 ctsio->io_hdr.status = msg_info->hdr.status; 483 ctsio->scsi_status = msg_info->scsi.scsi_status; 484 ctsio->sense_len = msg_info->scsi.sense_len; 485 ctsio->sense_residual = msg_info->scsi.sense_residual; 486 ctsio->residual = msg_info->scsi.residual; 487 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 488 sizeof(ctsio->sense_data)); 489 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 490 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 491 ctl_enqueue_isc((union ctl_io *)ctsio); 492} 493 494static void 495ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 496 union ctl_ha_msg *msg_info) 497{ 498 struct ctl_scsiio *ctsio; 499 500 if (msg_info->hdr.serializing_sc == NULL) { 501 printf("%s: serializing_sc == NULL!\n", __func__); 502 /* XXX KDM now what? */ 503 return; 504 } 505 506 ctsio = &msg_info->hdr.serializing_sc->scsiio; 507#if 0 508 /* 509 * Attempt to catch the situation where an I/O has 510 * been freed, and we're using it again. 511 */ 512 if (ctsio->io_hdr.io_type == 0xff) { 513 union ctl_io *tmp_io; 514 tmp_io = (union ctl_io *)ctsio; 515 printf("%s: %p use after free!\n", __func__, 516 ctsio); 517 printf("%s: type %d msg %d cdb %x iptl: " 518 "%d:%d:%d:%d tag 0x%04x " 519 "flag %#x status %x\n", 520 __func__, 521 tmp_io->io_hdr.io_type, 522 tmp_io->io_hdr.msg_type, 523 tmp_io->scsiio.cdb[0], 524 tmp_io->io_hdr.nexus.initid.id, 525 tmp_io->io_hdr.nexus.targ_port, 526 tmp_io->io_hdr.nexus.targ_target.id, 527 tmp_io->io_hdr.nexus.targ_lun, 528 (tmp_io->io_hdr.io_type == 529 CTL_IO_TASK) ? 530 tmp_io->taskio.tag_num : 531 tmp_io->scsiio.tag_num, 532 tmp_io->io_hdr.flags, 533 tmp_io->io_hdr.status); 534 } 535#endif 536 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 537 ctl_enqueue_isc((union ctl_io *)ctsio); 538} 539 540/* 541 * ISC (Inter Shelf Communication) event handler. Events from the HA 542 * subsystem come in here. 543 */ 544static void 545ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 546{ 547 struct ctl_softc *ctl_softc; 548 union ctl_io *io; 549 struct ctl_prio *presio; 550 ctl_ha_status isc_status; 551 552 ctl_softc = control_softc; 553 io = NULL; 554 555 556#if 0 557 printf("CTL: Isc Msg event %d\n", event); 558#endif 559 if (event == CTL_HA_EVT_MSG_RECV) { 560 union ctl_ha_msg msg_info; 561 562 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 563 sizeof(msg_info), /*wait*/ 0); 564#if 0 565 printf("CTL: msg_type %d\n", msg_info.msg_type); 566#endif 567 if (isc_status != 0) { 568 printf("Error receiving message, status = %d\n", 569 isc_status); 570 return; 571 } 572 573 switch (msg_info.hdr.msg_type) { 574 case CTL_MSG_SERIALIZE: 575#if 0 576 printf("Serialize\n"); 577#endif 578 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 579 if (io == NULL) { 580 printf("ctl_isc_event_handler: can't allocate " 581 "ctl_io!\n"); 582 /* Bad Juju */ 583 /* Need to set busy and send msg back */ 584 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 585 msg_info.hdr.status = CTL_SCSI_ERROR; 586 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 587 msg_info.scsi.sense_len = 0; 588 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 589 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 590 } 591 goto bailout; 592 } 593 ctl_zero_io(io); 594 // populate ctsio from msg_info 595 io->io_hdr.io_type = CTL_IO_SCSI; 596 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 597 io->io_hdr.original_sc = msg_info.hdr.original_sc; 598#if 0 599 printf("pOrig %x\n", (int)msg_info.original_sc); 600#endif 601 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 602 CTL_FLAG_IO_ACTIVE; 603 /* 604 * If we're in serialization-only mode, we don't 605 * want to go through full done processing. Thus 606 * the COPY flag. 607 * 608 * XXX KDM add another flag that is more specific. 609 */ 610 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 611 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 612 io->io_hdr.nexus = msg_info.hdr.nexus; 613#if 0 614 printf("targ %d, port %d, iid %d, lun %d\n", 615 io->io_hdr.nexus.targ_target.id, 616 io->io_hdr.nexus.targ_port, 617 io->io_hdr.nexus.initid.id, 618 io->io_hdr.nexus.targ_lun); 619#endif 620 io->scsiio.tag_num = msg_info.scsi.tag_num; 621 io->scsiio.tag_type = msg_info.scsi.tag_type; 622 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 623 CTL_MAX_CDBLEN); 624 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 625 struct ctl_cmd_entry *entry; 626 uint8_t opcode; 627 628 opcode = io->scsiio.cdb[0]; 629 entry = &ctl_cmd_table[opcode]; 630 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 631 io->io_hdr.flags |= 632 entry->flags & CTL_FLAG_DATA_MASK; 633 } 634 ctl_enqueue_isc(io); 635 break; 636 637 /* Performed on the Originating SC, XFER mode only */ 638 case CTL_MSG_DATAMOVE: { 639 struct ctl_sg_entry *sgl; 640 int i, j; 641 642 io = msg_info.hdr.original_sc; 643 if (io == NULL) { 644 printf("%s: original_sc == NULL!\n", __func__); 645 /* XXX KDM do something here */ 646 break; 647 } 648 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 649 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 650 /* 651 * Keep track of this, we need to send it back over 652 * when the datamove is complete. 653 */ 654 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 655 656 if (msg_info.dt.sg_sequence == 0) { 657 /* 658 * XXX KDM we use the preallocated S/G list 659 * here, but we'll need to change this to 660 * dynamic allocation if we need larger S/G 661 * lists. 662 */ 663 if (msg_info.dt.kern_sg_entries > 664 sizeof(io->io_hdr.remote_sglist) / 665 sizeof(io->io_hdr.remote_sglist[0])) { 666 printf("%s: number of S/G entries " 667 "needed %u > allocated num %zd\n", 668 __func__, 669 msg_info.dt.kern_sg_entries, 670 sizeof(io->io_hdr.remote_sglist)/ 671 sizeof(io->io_hdr.remote_sglist[0])); 672 673 /* 674 * XXX KDM send a message back to 675 * the other side to shut down the 676 * DMA. The error will come back 677 * through via the normal channel. 678 */ 679 break; 680 } 681 sgl = io->io_hdr.remote_sglist; 682 memset(sgl, 0, 683 sizeof(io->io_hdr.remote_sglist)); 684 685 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 686 687 io->scsiio.kern_sg_entries = 688 msg_info.dt.kern_sg_entries; 689 io->scsiio.rem_sg_entries = 690 msg_info.dt.kern_sg_entries; 691 io->scsiio.kern_data_len = 692 msg_info.dt.kern_data_len; 693 io->scsiio.kern_total_len = 694 msg_info.dt.kern_total_len; 695 io->scsiio.kern_data_resid = 696 msg_info.dt.kern_data_resid; 697 io->scsiio.kern_rel_offset = 698 msg_info.dt.kern_rel_offset; 699 /* 700 * Clear out per-DMA flags. 701 */ 702 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 703 /* 704 * Add per-DMA flags that are set for this 705 * particular DMA request. 706 */ 707 io->io_hdr.flags |= msg_info.dt.flags & 708 CTL_FLAG_RDMA_MASK; 709 } else 710 sgl = (struct ctl_sg_entry *) 711 io->scsiio.kern_data_ptr; 712 713 for (i = msg_info.dt.sent_sg_entries, j = 0; 714 i < (msg_info.dt.sent_sg_entries + 715 msg_info.dt.cur_sg_entries); i++, j++) { 716 sgl[i].addr = msg_info.dt.sg_list[j].addr; 717 sgl[i].len = msg_info.dt.sg_list[j].len; 718 719#if 0 720 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 721 __func__, 722 msg_info.dt.sg_list[j].addr, 723 msg_info.dt.sg_list[j].len, 724 sgl[i].addr, sgl[i].len, j, i); 725#endif 726 } 727#if 0 728 memcpy(&sgl[msg_info.dt.sent_sg_entries], 729 msg_info.dt.sg_list, 730 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 731#endif 732 733 /* 734 * If this is the last piece of the I/O, we've got 735 * the full S/G list. Queue processing in the thread. 736 * Otherwise wait for the next piece. 737 */ 738 if (msg_info.dt.sg_last != 0) 739 ctl_enqueue_isc(io); 740 break; 741 } 742 /* Performed on the Serializing (primary) SC, XFER mode only */ 743 case CTL_MSG_DATAMOVE_DONE: { 744 if (msg_info.hdr.serializing_sc == NULL) { 745 printf("%s: serializing_sc == NULL!\n", 746 __func__); 747 /* XXX KDM now what? */ 748 break; 749 } 750 /* 751 * We grab the sense information here in case 752 * there was a failure, so we can return status 753 * back to the initiator. 754 */ 755 io = msg_info.hdr.serializing_sc; 756 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 757 io->io_hdr.status = msg_info.hdr.status; 758 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 759 io->scsiio.sense_len = msg_info.scsi.sense_len; 760 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 761 io->io_hdr.port_status = msg_info.scsi.fetd_status; 762 io->scsiio.residual = msg_info.scsi.residual; 763 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 764 sizeof(io->scsiio.sense_data)); 765 ctl_enqueue_isc(io); 766 break; 767 } 768 769 /* Preformed on Originating SC, SER_ONLY mode */ 770 case CTL_MSG_R2R: 771 io = msg_info.hdr.original_sc; 772 if (io == NULL) { 773 printf("%s: Major Bummer\n", __func__); 774 return; 775 } else { 776#if 0 777 printf("pOrig %x\n",(int) ctsio); 778#endif 779 } 780 io->io_hdr.msg_type = CTL_MSG_R2R; 781 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 782 ctl_enqueue_isc(io); 783 break; 784 785 /* 786 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 787 * mode. 788 * Performed on the Originating (i.e. secondary) SC in XFER 789 * mode 790 */ 791 case CTL_MSG_FINISH_IO: 792 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 793 ctl_isc_handler_finish_xfer(ctl_softc, 794 &msg_info); 795 else 796 ctl_isc_handler_finish_ser_only(ctl_softc, 797 &msg_info); 798 break; 799 800 /* Preformed on Originating SC */ 801 case CTL_MSG_BAD_JUJU: 802 io = msg_info.hdr.original_sc; 803 if (io == NULL) { 804 printf("%s: Bad JUJU!, original_sc is NULL!\n", 805 __func__); 806 break; 807 } 808 ctl_copy_sense_data(&msg_info, io); 809 /* 810 * IO should have already been cleaned up on other 811 * SC so clear this flag so we won't send a message 812 * back to finish the IO there. 813 */ 814 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 815 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 816 817 /* io = msg_info.hdr.serializing_sc; */ 818 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 819 ctl_enqueue_isc(io); 820 break; 821 822 /* Handle resets sent from the other side */ 823 case CTL_MSG_MANAGE_TASKS: { 824 struct ctl_taskio *taskio; 825 taskio = (struct ctl_taskio *)ctl_alloc_io( 826 (void *)ctl_softc->othersc_pool); 827 if (taskio == NULL) { 828 printf("ctl_isc_event_handler: can't allocate " 829 "ctl_io!\n"); 830 /* Bad Juju */ 831 /* should I just call the proper reset func 832 here??? */ 833 goto bailout; 834 } 835 ctl_zero_io((union ctl_io *)taskio); 836 taskio->io_hdr.io_type = CTL_IO_TASK; 837 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 838 taskio->io_hdr.nexus = msg_info.hdr.nexus; 839 taskio->task_action = msg_info.task.task_action; 840 taskio->tag_num = msg_info.task.tag_num; 841 taskio->tag_type = msg_info.task.tag_type; 842#ifdef CTL_TIME_IO 843 taskio->io_hdr.start_time = time_uptime; 844 getbintime(&taskio->io_hdr.start_bt); 845#if 0 846 cs_prof_gettime(&taskio->io_hdr.start_ticks); 847#endif 848#endif /* CTL_TIME_IO */ 849 ctl_run_task((union ctl_io *)taskio); 850 break; 851 } 852 /* Persistent Reserve action which needs attention */ 853 case CTL_MSG_PERS_ACTION: 854 presio = (struct ctl_prio *)ctl_alloc_io( 855 (void *)ctl_softc->othersc_pool); 856 if (presio == NULL) { 857 printf("ctl_isc_event_handler: can't allocate " 858 "ctl_io!\n"); 859 /* Bad Juju */ 860 /* Need to set busy and send msg back */ 861 goto bailout; 862 } 863 ctl_zero_io((union ctl_io *)presio); 864 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 865 presio->pr_msg = msg_info.pr; 866 ctl_enqueue_isc((union ctl_io *)presio); 867 break; 868 case CTL_MSG_SYNC_FE: 869 rcv_sync_msg = 1; 870 break; 871 case CTL_MSG_APS_LOCK: { 872 // It's quicker to execute this then to 873 // queue it. 874 struct ctl_lun *lun; 875 struct ctl_page_index *page_index; 876 struct copan_aps_subpage *current_sp; 877 uint32_t targ_lun; 878 879 targ_lun = msg_info.hdr.nexus.targ_mapped_lun; 880 lun = ctl_softc->ctl_luns[targ_lun]; 881 mtx_lock(&lun->lun_lock); 882 page_index = &lun->mode_pages.index[index_to_aps_page]; 883 current_sp = (struct copan_aps_subpage *) 884 (page_index->page_data + 885 (page_index->page_len * CTL_PAGE_CURRENT)); 886 887 current_sp->lock_active = msg_info.aps.lock_flag; 888 mtx_unlock(&lun->lun_lock); 889 break; 890 } 891 default: 892 printf("How did I get here?\n"); 893 } 894 } else if (event == CTL_HA_EVT_MSG_SENT) { 895 if (param != CTL_HA_STATUS_SUCCESS) { 896 printf("Bad status from ctl_ha_msg_send status %d\n", 897 param); 898 } 899 return; 900 } else if (event == CTL_HA_EVT_DISCONNECT) { 901 printf("CTL: Got a disconnect from Isc\n"); 902 return; 903 } else { 904 printf("ctl_isc_event_handler: Unknown event %d\n", event); 905 return; 906 } 907 908bailout: 909 return; 910} 911 912static void 913ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 914{ 915 struct scsi_sense_data *sense; 916 917 sense = &dest->scsiio.sense_data; 918 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 919 dest->scsiio.scsi_status = src->scsi.scsi_status; 920 dest->scsiio.sense_len = src->scsi.sense_len; 921 dest->io_hdr.status = src->hdr.status; 922} 923 924static int 925ctl_init(void) 926{ 927 struct ctl_softc *softc; 928 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 929 struct ctl_frontend *fe; 930 uint8_t sc_id =0; 931 int i, error, retval; 932 //int isc_retval; 933 934 retval = 0; 935 ctl_pause_rtr = 0; 936 rcv_sync_msg = 0; 937 938 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 939 M_WAITOK | M_ZERO); 940 softc = control_softc; 941 942 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 943 "cam/ctl"); 944 945 softc->dev->si_drv1 = softc; 946 947 /* 948 * By default, return a "bad LUN" peripheral qualifier for unknown 949 * LUNs. The user can override this default using the tunable or 950 * sysctl. See the comment in ctl_inquiry_std() for more details. 951 */ 952 softc->inquiry_pq_no_lun = 1; 953 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 954 &softc->inquiry_pq_no_lun); 955 sysctl_ctx_init(&softc->sysctl_ctx); 956 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 957 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 958 CTLFLAG_RD, 0, "CAM Target Layer"); 959 960 if (softc->sysctl_tree == NULL) { 961 printf("%s: unable to allocate sysctl tree\n", __func__); 962 destroy_dev(softc->dev); 963 free(control_softc, M_DEVBUF); 964 control_softc = NULL; 965 return (ENOMEM); 966 } 967 968 SYSCTL_ADD_INT(&softc->sysctl_ctx, 969 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 970 "inquiry_pq_no_lun", CTLFLAG_RW, 971 &softc->inquiry_pq_no_lun, 0, 972 "Report no lun possible for invalid LUNs"); 973 974 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 975 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 976 softc->open_count = 0; 977 978 /* 979 * Default to actually sending a SYNCHRONIZE CACHE command down to 980 * the drive. 981 */ 982 softc->flags = CTL_FLAG_REAL_SYNC; 983 984 /* 985 * In Copan's HA scheme, the "master" and "slave" roles are 986 * figured out through the slot the controller is in. Although it 987 * is an active/active system, someone has to be in charge. 988 */ 989#ifdef NEEDTOPORT 990 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 991#endif 992 993 if (sc_id == 0) { 994 softc->flags |= CTL_FLAG_MASTER_SHELF; 995 persis_offset = 0; 996 } else 997 persis_offset = CTL_MAX_INITIATORS; 998 999 /* 1000 * XXX KDM need to figure out where we want to get our target ID 1001 * and WWID. Is it different on each port? 1002 */ 1003 softc->target.id = 0; 1004 softc->target.wwid[0] = 0x12345678; 1005 softc->target.wwid[1] = 0x87654321; 1006 STAILQ_INIT(&softc->lun_list); 1007 STAILQ_INIT(&softc->pending_lun_queue); 1008 STAILQ_INIT(&softc->fe_list); 1009 STAILQ_INIT(&softc->be_list); 1010 STAILQ_INIT(&softc->io_pools); 1011 1012 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1013 &internal_pool)!= 0){ 1014 printf("ctl: can't allocate %d entry internal pool, " 1015 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1016 return (ENOMEM); 1017 } 1018 1019 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1020 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1021 printf("ctl: can't allocate %d entry emergency pool, " 1022 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1023 ctl_pool_free(internal_pool); 1024 return (ENOMEM); 1025 } 1026 1027 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1028 &other_pool) != 0) 1029 { 1030 printf("ctl: can't allocate %d entry other SC pool, " 1031 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1032 ctl_pool_free(internal_pool); 1033 ctl_pool_free(emergency_pool); 1034 return (ENOMEM); 1035 } 1036 1037 softc->internal_pool = internal_pool; 1038 softc->emergency_pool = emergency_pool; 1039 softc->othersc_pool = other_pool; 1040 1041 if (worker_threads <= 0) 1042 worker_threads = max(1, mp_ncpus / 4); 1043 if (worker_threads > CTL_MAX_THREADS) 1044 worker_threads = CTL_MAX_THREADS; 1045 1046 for (i = 0; i < worker_threads; i++) { 1047 struct ctl_thread *thr = &softc->threads[i]; 1048 1049 mtx_init(&thr->queue_lock, "CTL queue mutex", NULL, MTX_DEF); 1050 thr->ctl_softc = softc; 1051 STAILQ_INIT(&thr->incoming_queue); 1052 STAILQ_INIT(&thr->rtr_queue); 1053 STAILQ_INIT(&thr->done_queue); 1054 STAILQ_INIT(&thr->isc_queue); 1055 1056 error = kproc_kthread_add(ctl_work_thread, thr, 1057 &softc->ctl_proc, &thr->thread, 0, 0, "ctl", "work%d", i); 1058 if (error != 0) { 1059 printf("error creating CTL work thread!\n"); 1060 ctl_pool_free(internal_pool); 1061 ctl_pool_free(emergency_pool); 1062 ctl_pool_free(other_pool); 1063 return (error); 1064 } 1065 } 1066 error = kproc_kthread_add(ctl_lun_thread, softc, 1067 &softc->ctl_proc, NULL, 0, 0, "ctl", "lun"); 1068 if (error != 0) { 1069 printf("error creating CTL lun thread!\n"); 1070 ctl_pool_free(internal_pool); 1071 ctl_pool_free(emergency_pool); 1072 ctl_pool_free(other_pool); 1073 return (error); 1074 } 1075 if (bootverbose) 1076 printf("ctl: CAM Target Layer loaded\n"); 1077 1078 /* 1079 * Initialize the initiator and portname mappings 1080 */ 1081 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1082 1083 /* 1084 * Initialize the ioctl front end. 1085 */ 1086 fe = &softc->ioctl_info.fe; 1087 sprintf(softc->ioctl_info.port_name, "CTL ioctl"); 1088 fe->port_type = CTL_PORT_IOCTL; 1089 fe->num_requested_ctl_io = 100; 1090 fe->port_name = softc->ioctl_info.port_name; 1091 fe->port_online = ctl_ioctl_online; 1092 fe->port_offline = ctl_ioctl_offline; 1093 fe->onoff_arg = &softc->ioctl_info; 1094 fe->targ_enable = ctl_ioctl_targ_enable; 1095 fe->targ_disable = ctl_ioctl_targ_disable; 1096 fe->lun_enable = ctl_ioctl_lun_enable; 1097 fe->lun_disable = ctl_ioctl_lun_disable; 1098 fe->targ_lun_arg = &softc->ioctl_info; 1099 fe->fe_datamove = ctl_ioctl_datamove; 1100 fe->fe_done = ctl_ioctl_done; 1101 fe->max_targets = 15; 1102 fe->max_target_id = 15; 1103 1104 if (ctl_frontend_register(&softc->ioctl_info.fe, 1105 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1106 printf("ctl: ioctl front end registration failed, will " 1107 "continue anyway\n"); 1108 } 1109 1110#ifdef CTL_IO_DELAY 1111 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1112 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1113 sizeof(struct callout), CTL_TIMER_BYTES); 1114 return (EINVAL); 1115 } 1116#endif /* CTL_IO_DELAY */ 1117 1118 return (0); 1119} 1120 1121void 1122ctl_shutdown(void) 1123{ 1124 struct ctl_softc *softc; 1125 struct ctl_lun *lun, *next_lun; 1126 struct ctl_io_pool *pool; 1127 1128 softc = (struct ctl_softc *)control_softc; 1129 1130 if (ctl_frontend_deregister(&softc->ioctl_info.fe) != 0) 1131 printf("ctl: ioctl front end deregistration failed\n"); 1132 1133 mtx_lock(&softc->ctl_lock); 1134 1135 /* 1136 * Free up each LUN. 1137 */ 1138 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1139 next_lun = STAILQ_NEXT(lun, links); 1140 ctl_free_lun(lun); 1141 } 1142 1143 mtx_unlock(&softc->ctl_lock); 1144 1145 /* 1146 * This will rip the rug out from under any FETDs or anyone else 1147 * that has a pool allocated. Since we increment our module 1148 * refcount any time someone outside the main CTL module allocates 1149 * a pool, we shouldn't have any problems here. The user won't be 1150 * able to unload the CTL module until client modules have 1151 * successfully unloaded. 1152 */ 1153 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1154 ctl_pool_free(pool); 1155 1156#if 0 1157 ctl_shutdown_thread(softc->work_thread); 1158 mtx_destroy(&softc->queue_lock); 1159#endif 1160 1161 mtx_destroy(&softc->pool_lock); 1162 mtx_destroy(&softc->ctl_lock); 1163 1164 destroy_dev(softc->dev); 1165 1166 sysctl_ctx_free(&softc->sysctl_ctx); 1167 1168 free(control_softc, M_DEVBUF); 1169 control_softc = NULL; 1170 1171 if (bootverbose) 1172 printf("ctl: CAM Target Layer unloaded\n"); 1173} 1174 1175static int 1176ctl_module_event_handler(module_t mod, int what, void *arg) 1177{ 1178 1179 switch (what) { 1180 case MOD_LOAD: 1181 return (ctl_init()); 1182 case MOD_UNLOAD: 1183 return (EBUSY); 1184 default: 1185 return (EOPNOTSUPP); 1186 } 1187} 1188 1189/* 1190 * XXX KDM should we do some access checks here? Bump a reference count to 1191 * prevent a CTL module from being unloaded while someone has it open? 1192 */ 1193static int 1194ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1195{ 1196 return (0); 1197} 1198 1199static int 1200ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1201{ 1202 return (0); 1203} 1204 1205int 1206ctl_port_enable(ctl_port_type port_type) 1207{ 1208 struct ctl_softc *softc; 1209 struct ctl_frontend *fe; 1210 1211 if (ctl_is_single == 0) { 1212 union ctl_ha_msg msg_info; 1213 int isc_retval; 1214 1215#if 0 1216 printf("%s: HA mode, synchronizing frontend enable\n", 1217 __func__); 1218#endif 1219 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1220 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1221 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1222 printf("Sync msg send error retval %d\n", isc_retval); 1223 } 1224 if (!rcv_sync_msg) { 1225 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1226 sizeof(msg_info), 1); 1227 } 1228#if 0 1229 printf("CTL:Frontend Enable\n"); 1230 } else { 1231 printf("%s: single mode, skipping frontend synchronization\n", 1232 __func__); 1233#endif 1234 } 1235 1236 softc = control_softc; 1237 1238 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1239 if (port_type & fe->port_type) 1240 { 1241#if 0 1242 printf("port %d\n", fe->targ_port); 1243#endif 1244 ctl_frontend_online(fe); 1245 } 1246 } 1247 1248 return (0); 1249} 1250 1251int 1252ctl_port_disable(ctl_port_type port_type) 1253{ 1254 struct ctl_softc *softc; 1255 struct ctl_frontend *fe; 1256 1257 softc = control_softc; 1258 1259 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1260 if (port_type & fe->port_type) 1261 ctl_frontend_offline(fe); 1262 } 1263 1264 return (0); 1265} 1266 1267/* 1268 * Returns 0 for success, 1 for failure. 1269 * Currently the only failure mode is if there aren't enough entries 1270 * allocated. So, in case of a failure, look at num_entries_dropped, 1271 * reallocate and try again. 1272 */ 1273int 1274ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1275 int *num_entries_filled, int *num_entries_dropped, 1276 ctl_port_type port_type, int no_virtual) 1277{ 1278 struct ctl_softc *softc; 1279 struct ctl_frontend *fe; 1280 int entries_dropped, entries_filled; 1281 int retval; 1282 int i; 1283 1284 softc = control_softc; 1285 1286 retval = 0; 1287 entries_filled = 0; 1288 entries_dropped = 0; 1289 1290 i = 0; 1291 mtx_lock(&softc->ctl_lock); 1292 STAILQ_FOREACH(fe, &softc->fe_list, links) { 1293 struct ctl_port_entry *entry; 1294 1295 if ((fe->port_type & port_type) == 0) 1296 continue; 1297 1298 if ((no_virtual != 0) 1299 && (fe->virtual_port != 0)) 1300 continue; 1301 1302 if (entries_filled >= num_entries_alloced) { 1303 entries_dropped++; 1304 continue; 1305 } 1306 entry = &entries[i]; 1307 1308 entry->port_type = fe->port_type; 1309 strlcpy(entry->port_name, fe->port_name, 1310 sizeof(entry->port_name)); 1311 entry->physical_port = fe->physical_port; 1312 entry->virtual_port = fe->virtual_port; 1313 entry->wwnn = fe->wwnn; 1314 entry->wwpn = fe->wwpn; 1315 1316 i++; 1317 entries_filled++; 1318 } 1319 1320 mtx_unlock(&softc->ctl_lock); 1321 1322 if (entries_dropped > 0) 1323 retval = 1; 1324 1325 *num_entries_dropped = entries_dropped; 1326 *num_entries_filled = entries_filled; 1327 1328 return (retval); 1329} 1330 1331static void 1332ctl_ioctl_online(void *arg) 1333{ 1334 struct ctl_ioctl_info *ioctl_info; 1335 1336 ioctl_info = (struct ctl_ioctl_info *)arg; 1337 1338 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1339} 1340 1341static void 1342ctl_ioctl_offline(void *arg) 1343{ 1344 struct ctl_ioctl_info *ioctl_info; 1345 1346 ioctl_info = (struct ctl_ioctl_info *)arg; 1347 1348 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1349} 1350 1351/* 1352 * Remove an initiator by port number and initiator ID. 1353 * Returns 0 for success, 1 for failure. 1354 */ 1355int 1356ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1357{ 1358 struct ctl_softc *softc; 1359 1360 softc = control_softc; 1361 1362 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1363 1364 if ((targ_port < 0) 1365 || (targ_port > CTL_MAX_PORTS)) { 1366 printf("%s: invalid port number %d\n", __func__, targ_port); 1367 return (1); 1368 } 1369 if (iid > CTL_MAX_INIT_PER_PORT) { 1370 printf("%s: initiator ID %u > maximun %u!\n", 1371 __func__, iid, CTL_MAX_INIT_PER_PORT); 1372 return (1); 1373 } 1374 1375 mtx_lock(&softc->ctl_lock); 1376 1377 softc->wwpn_iid[targ_port][iid].in_use = 0; 1378 1379 mtx_unlock(&softc->ctl_lock); 1380 1381 return (0); 1382} 1383 1384/* 1385 * Add an initiator to the initiator map. 1386 * Returns 0 for success, 1 for failure. 1387 */ 1388int 1389ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1390{ 1391 struct ctl_softc *softc; 1392 int retval; 1393 1394 softc = control_softc; 1395 1396 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1397 1398 retval = 0; 1399 1400 if ((targ_port < 0) 1401 || (targ_port > CTL_MAX_PORTS)) { 1402 printf("%s: invalid port number %d\n", __func__, targ_port); 1403 return (1); 1404 } 1405 if (iid > CTL_MAX_INIT_PER_PORT) { 1406 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1407 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1408 return (1); 1409 } 1410 1411 mtx_lock(&softc->ctl_lock); 1412 1413 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1414 /* 1415 * We don't treat this as an error. 1416 */ 1417 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1418 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1419 __func__, targ_port, iid, (uintmax_t)wwpn); 1420 goto bailout; 1421 } 1422 1423 /* 1424 * This is an error, but what do we do about it? The 1425 * driver is telling us we have a new WWPN for this 1426 * initiator ID, so we pretty much need to use it. 1427 */ 1428 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1429 "still at that address\n", __func__, targ_port, iid, 1430 (uintmax_t)wwpn, 1431 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1432 1433 /* 1434 * XXX KDM clear have_ca and ua_pending on each LUN for 1435 * this initiator. 1436 */ 1437 } 1438 softc->wwpn_iid[targ_port][iid].in_use = 1; 1439 softc->wwpn_iid[targ_port][iid].iid = iid; 1440 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1441 softc->wwpn_iid[targ_port][iid].port = targ_port; 1442 1443bailout: 1444 1445 mtx_unlock(&softc->ctl_lock); 1446 1447 return (retval); 1448} 1449 1450/* 1451 * XXX KDM should we pretend to do something in the target/lun 1452 * enable/disable functions? 1453 */ 1454static int 1455ctl_ioctl_targ_enable(void *arg, struct ctl_id targ_id) 1456{ 1457 return (0); 1458} 1459 1460static int 1461ctl_ioctl_targ_disable(void *arg, struct ctl_id targ_id) 1462{ 1463 return (0); 1464} 1465 1466static int 1467ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1468{ 1469 return (0); 1470} 1471 1472static int 1473ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1474{ 1475 return (0); 1476} 1477 1478/* 1479 * Data movement routine for the CTL ioctl frontend port. 1480 */ 1481static int 1482ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1483{ 1484 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1485 struct ctl_sg_entry ext_entry, kern_entry; 1486 int ext_sglen, ext_sg_entries, kern_sg_entries; 1487 int ext_sg_start, ext_offset; 1488 int len_to_copy, len_copied; 1489 int kern_watermark, ext_watermark; 1490 int ext_sglist_malloced; 1491 int i, j; 1492 1493 ext_sglist_malloced = 0; 1494 ext_sg_start = 0; 1495 ext_offset = 0; 1496 1497 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1498 1499 /* 1500 * If this flag is set, fake the data transfer. 1501 */ 1502 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1503 ctsio->ext_data_filled = ctsio->ext_data_len; 1504 goto bailout; 1505 } 1506 1507 /* 1508 * To simplify things here, if we have a single buffer, stick it in 1509 * a S/G entry and just make it a single entry S/G list. 1510 */ 1511 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1512 int len_seen; 1513 1514 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1515 1516 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1517 M_WAITOK); 1518 ext_sglist_malloced = 1; 1519 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1520 ext_sglen) != 0) { 1521 ctl_set_internal_failure(ctsio, 1522 /*sks_valid*/ 0, 1523 /*retry_count*/ 0); 1524 goto bailout; 1525 } 1526 ext_sg_entries = ctsio->ext_sg_entries; 1527 len_seen = 0; 1528 for (i = 0; i < ext_sg_entries; i++) { 1529 if ((len_seen + ext_sglist[i].len) >= 1530 ctsio->ext_data_filled) { 1531 ext_sg_start = i; 1532 ext_offset = ctsio->ext_data_filled - len_seen; 1533 break; 1534 } 1535 len_seen += ext_sglist[i].len; 1536 } 1537 } else { 1538 ext_sglist = &ext_entry; 1539 ext_sglist->addr = ctsio->ext_data_ptr; 1540 ext_sglist->len = ctsio->ext_data_len; 1541 ext_sg_entries = 1; 1542 ext_sg_start = 0; 1543 ext_offset = ctsio->ext_data_filled; 1544 } 1545 1546 if (ctsio->kern_sg_entries > 0) { 1547 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1548 kern_sg_entries = ctsio->kern_sg_entries; 1549 } else { 1550 kern_sglist = &kern_entry; 1551 kern_sglist->addr = ctsio->kern_data_ptr; 1552 kern_sglist->len = ctsio->kern_data_len; 1553 kern_sg_entries = 1; 1554 } 1555 1556 1557 kern_watermark = 0; 1558 ext_watermark = ext_offset; 1559 len_copied = 0; 1560 for (i = ext_sg_start, j = 0; 1561 i < ext_sg_entries && j < kern_sg_entries;) { 1562 uint8_t *ext_ptr, *kern_ptr; 1563 1564 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1565 kern_sglist[j].len - kern_watermark); 1566 1567 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1568 ext_ptr = ext_ptr + ext_watermark; 1569 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1570 /* 1571 * XXX KDM fix this! 1572 */ 1573 panic("need to implement bus address support"); 1574#if 0 1575 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1576#endif 1577 } else 1578 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1579 kern_ptr = kern_ptr + kern_watermark; 1580 1581 kern_watermark += len_to_copy; 1582 ext_watermark += len_to_copy; 1583 1584 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1585 CTL_FLAG_DATA_IN) { 1586 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1587 "bytes to user\n", len_to_copy)); 1588 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1589 "to %p\n", kern_ptr, ext_ptr)); 1590 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1591 ctl_set_internal_failure(ctsio, 1592 /*sks_valid*/ 0, 1593 /*retry_count*/ 0); 1594 goto bailout; 1595 } 1596 } else { 1597 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1598 "bytes from user\n", len_to_copy)); 1599 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1600 "to %p\n", ext_ptr, kern_ptr)); 1601 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1602 ctl_set_internal_failure(ctsio, 1603 /*sks_valid*/ 0, 1604 /*retry_count*/0); 1605 goto bailout; 1606 } 1607 } 1608 1609 len_copied += len_to_copy; 1610 1611 if (ext_sglist[i].len == ext_watermark) { 1612 i++; 1613 ext_watermark = 0; 1614 } 1615 1616 if (kern_sglist[j].len == kern_watermark) { 1617 j++; 1618 kern_watermark = 0; 1619 } 1620 } 1621 1622 ctsio->ext_data_filled += len_copied; 1623 1624 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1625 "kern_sg_entries: %d\n", ext_sg_entries, 1626 kern_sg_entries)); 1627 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1628 "kern_data_len = %d\n", ctsio->ext_data_len, 1629 ctsio->kern_data_len)); 1630 1631 1632 /* XXX KDM set residual?? */ 1633bailout: 1634 1635 if (ext_sglist_malloced != 0) 1636 free(ext_sglist, M_CTL); 1637 1638 return (CTL_RETVAL_COMPLETE); 1639} 1640 1641/* 1642 * Serialize a command that went down the "wrong" side, and so was sent to 1643 * this controller for execution. The logic is a little different than the 1644 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1645 * sent back to the other side, but in the success case, we execute the 1646 * command on this side (XFER mode) or tell the other side to execute it 1647 * (SER_ONLY mode). 1648 */ 1649static int 1650ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio) 1651{ 1652 struct ctl_softc *ctl_softc; 1653 union ctl_ha_msg msg_info; 1654 struct ctl_lun *lun; 1655 int retval = 0; 1656 uint32_t targ_lun; 1657 1658 ctl_softc = control_softc; 1659 1660 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 1661 lun = ctl_softc->ctl_luns[targ_lun]; 1662 if (lun==NULL) 1663 { 1664 /* 1665 * Why isn't LUN defined? The other side wouldn't 1666 * send a cmd if the LUN is undefined. 1667 */ 1668 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1669 1670 /* "Logical unit not supported" */ 1671 ctl_set_sense_data(&msg_info.scsi.sense_data, 1672 lun, 1673 /*sense_format*/SSD_TYPE_NONE, 1674 /*current_error*/ 1, 1675 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1676 /*asc*/ 0x25, 1677 /*ascq*/ 0x00, 1678 SSD_ELEM_NONE); 1679 1680 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1681 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1682 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1683 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1684 msg_info.hdr.serializing_sc = NULL; 1685 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1686 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1687 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1688 } 1689 return(1); 1690 1691 } 1692 1693 mtx_lock(&lun->lun_lock); 1694 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1695 1696 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1697 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1698 ooa_links))) { 1699 case CTL_ACTION_BLOCK: 1700 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1701 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1702 blocked_links); 1703 break; 1704 case CTL_ACTION_PASS: 1705 case CTL_ACTION_SKIP: 1706 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1707 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1708 ctl_enqueue_rtr((union ctl_io *)ctsio); 1709 } else { 1710 1711 /* send msg back to other side */ 1712 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1713 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1714 msg_info.hdr.msg_type = CTL_MSG_R2R; 1715#if 0 1716 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1717#endif 1718 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1719 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1720 } 1721 } 1722 break; 1723 case CTL_ACTION_OVERLAP: 1724 /* OVERLAPPED COMMANDS ATTEMPTED */ 1725 ctl_set_sense_data(&msg_info.scsi.sense_data, 1726 lun, 1727 /*sense_format*/SSD_TYPE_NONE, 1728 /*current_error*/ 1, 1729 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1730 /*asc*/ 0x4E, 1731 /*ascq*/ 0x00, 1732 SSD_ELEM_NONE); 1733 1734 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1735 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1736 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1737 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1738 msg_info.hdr.serializing_sc = NULL; 1739 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1740#if 0 1741 printf("BAD JUJU:Major Bummer Overlap\n"); 1742#endif 1743 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1744 retval = 1; 1745 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1746 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1747 } 1748 break; 1749 case CTL_ACTION_OVERLAP_TAG: 1750 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1751 ctl_set_sense_data(&msg_info.scsi.sense_data, 1752 lun, 1753 /*sense_format*/SSD_TYPE_NONE, 1754 /*current_error*/ 1, 1755 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1756 /*asc*/ 0x4D, 1757 /*ascq*/ ctsio->tag_num & 0xff, 1758 SSD_ELEM_NONE); 1759 1760 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1761 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1762 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1763 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1764 msg_info.hdr.serializing_sc = NULL; 1765 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1766#if 0 1767 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1768#endif 1769 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1770 retval = 1; 1771 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1772 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1773 } 1774 break; 1775 case CTL_ACTION_ERROR: 1776 default: 1777 /* "Internal target failure" */ 1778 ctl_set_sense_data(&msg_info.scsi.sense_data, 1779 lun, 1780 /*sense_format*/SSD_TYPE_NONE, 1781 /*current_error*/ 1, 1782 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1783 /*asc*/ 0x44, 1784 /*ascq*/ 0x00, 1785 SSD_ELEM_NONE); 1786 1787 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1788 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1789 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1790 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1791 msg_info.hdr.serializing_sc = NULL; 1792 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1793#if 0 1794 printf("BAD JUJU:Major Bummer HW Error\n"); 1795#endif 1796 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1797 retval = 1; 1798 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1799 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1800 } 1801 break; 1802 } 1803 mtx_unlock(&lun->lun_lock); 1804 return (retval); 1805} 1806 1807static int 1808ctl_ioctl_submit_wait(union ctl_io *io) 1809{ 1810 struct ctl_fe_ioctl_params params; 1811 ctl_fe_ioctl_state last_state; 1812 int done, retval; 1813 1814 retval = 0; 1815 1816 bzero(¶ms, sizeof(params)); 1817 1818 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1819 cv_init(¶ms.sem, "ctlioccv"); 1820 params.state = CTL_IOCTL_INPROG; 1821 last_state = params.state; 1822 1823 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1824 1825 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1826 1827 /* This shouldn't happen */ 1828 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1829 return (retval); 1830 1831 done = 0; 1832 1833 do { 1834 mtx_lock(¶ms.ioctl_mtx); 1835 /* 1836 * Check the state here, and don't sleep if the state has 1837 * already changed (i.e. wakeup has already occured, but we 1838 * weren't waiting yet). 1839 */ 1840 if (params.state == last_state) { 1841 /* XXX KDM cv_wait_sig instead? */ 1842 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1843 } 1844 last_state = params.state; 1845 1846 switch (params.state) { 1847 case CTL_IOCTL_INPROG: 1848 /* Why did we wake up? */ 1849 /* XXX KDM error here? */ 1850 mtx_unlock(¶ms.ioctl_mtx); 1851 break; 1852 case CTL_IOCTL_DATAMOVE: 1853 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1854 1855 /* 1856 * change last_state back to INPROG to avoid 1857 * deadlock on subsequent data moves. 1858 */ 1859 params.state = last_state = CTL_IOCTL_INPROG; 1860 1861 mtx_unlock(¶ms.ioctl_mtx); 1862 ctl_ioctl_do_datamove(&io->scsiio); 1863 /* 1864 * Note that in some cases, most notably writes, 1865 * this will queue the I/O and call us back later. 1866 * In other cases, generally reads, this routine 1867 * will immediately call back and wake us up, 1868 * probably using our own context. 1869 */ 1870 io->scsiio.be_move_done(io); 1871 break; 1872 case CTL_IOCTL_DONE: 1873 mtx_unlock(¶ms.ioctl_mtx); 1874 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1875 done = 1; 1876 break; 1877 default: 1878 mtx_unlock(¶ms.ioctl_mtx); 1879 /* XXX KDM error here? */ 1880 break; 1881 } 1882 } while (done == 0); 1883 1884 mtx_destroy(¶ms.ioctl_mtx); 1885 cv_destroy(¶ms.sem); 1886 1887 return (CTL_RETVAL_COMPLETE); 1888} 1889 1890static void 1891ctl_ioctl_datamove(union ctl_io *io) 1892{ 1893 struct ctl_fe_ioctl_params *params; 1894 1895 params = (struct ctl_fe_ioctl_params *) 1896 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1897 1898 mtx_lock(¶ms->ioctl_mtx); 1899 params->state = CTL_IOCTL_DATAMOVE; 1900 cv_broadcast(¶ms->sem); 1901 mtx_unlock(¶ms->ioctl_mtx); 1902} 1903 1904static void 1905ctl_ioctl_done(union ctl_io *io) 1906{ 1907 struct ctl_fe_ioctl_params *params; 1908 1909 params = (struct ctl_fe_ioctl_params *) 1910 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1911 1912 mtx_lock(¶ms->ioctl_mtx); 1913 params->state = CTL_IOCTL_DONE; 1914 cv_broadcast(¶ms->sem); 1915 mtx_unlock(¶ms->ioctl_mtx); 1916} 1917 1918static void 1919ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1920{ 1921 struct ctl_fe_ioctl_startstop_info *sd_info; 1922 1923 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1924 1925 sd_info->hs_info.status = metatask->status; 1926 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1927 sd_info->hs_info.luns_complete = 1928 metatask->taskinfo.startstop.luns_complete; 1929 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1930 1931 cv_broadcast(&sd_info->sem); 1932} 1933 1934static void 1935ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1936{ 1937 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1938 1939 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1940 1941 mtx_lock(fe_bbr_info->lock); 1942 fe_bbr_info->bbr_info->status = metatask->status; 1943 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1944 fe_bbr_info->wakeup_done = 1; 1945 mtx_unlock(fe_bbr_info->lock); 1946 1947 cv_broadcast(&fe_bbr_info->sem); 1948} 1949 1950/* 1951 * Returns 0 for success, errno for failure. 1952 */ 1953static int 1954ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1955 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1956{ 1957 union ctl_io *io; 1958 int retval; 1959 1960 retval = 0; 1961 1962 mtx_lock(&lun->lun_lock); 1963 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 1964 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 1965 ooa_links)) { 1966 struct ctl_ooa_entry *entry; 1967 1968 /* 1969 * If we've got more than we can fit, just count the 1970 * remaining entries. 1971 */ 1972 if (*cur_fill_num >= ooa_hdr->alloc_num) 1973 continue; 1974 1975 entry = &kern_entries[*cur_fill_num]; 1976 1977 entry->tag_num = io->scsiio.tag_num; 1978 entry->lun_num = lun->lun; 1979#ifdef CTL_TIME_IO 1980 entry->start_bt = io->io_hdr.start_bt; 1981#endif 1982 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 1983 entry->cdb_len = io->scsiio.cdb_len; 1984 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 1985 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 1986 1987 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 1988 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 1989 1990 if (io->io_hdr.flags & CTL_FLAG_ABORT) 1991 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 1992 1993 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 1994 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 1995 1996 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 1997 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 1998 } 1999 mtx_unlock(&lun->lun_lock); 2000 2001 return (retval); 2002} 2003 2004static void * 2005ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2006 size_t error_str_len) 2007{ 2008 void *kptr; 2009 2010 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2011 2012 if (copyin(user_addr, kptr, len) != 0) { 2013 snprintf(error_str, error_str_len, "Error copying %d bytes " 2014 "from user address %p to kernel address %p", len, 2015 user_addr, kptr); 2016 free(kptr, M_CTL); 2017 return (NULL); 2018 } 2019 2020 return (kptr); 2021} 2022 2023static void 2024ctl_free_args(int num_be_args, struct ctl_be_arg *be_args) 2025{ 2026 int i; 2027 2028 if (be_args == NULL) 2029 return; 2030 2031 for (i = 0; i < num_be_args; i++) { 2032 free(be_args[i].kname, M_CTL); 2033 free(be_args[i].kvalue, M_CTL); 2034 } 2035 2036 free(be_args, M_CTL); 2037} 2038 2039static struct ctl_be_arg * 2040ctl_copyin_args(int num_be_args, struct ctl_be_arg *be_args, 2041 char *error_str, size_t error_str_len) 2042{ 2043 struct ctl_be_arg *args; 2044 int i; 2045 2046 args = ctl_copyin_alloc(be_args, num_be_args * sizeof(*be_args), 2047 error_str, error_str_len); 2048 2049 if (args == NULL) 2050 goto bailout; 2051 2052 for (i = 0; i < num_be_args; i++) { 2053 args[i].kname = NULL; 2054 args[i].kvalue = NULL; 2055 } 2056 2057 for (i = 0; i < num_be_args; i++) { 2058 uint8_t *tmpptr; 2059 2060 args[i].kname = ctl_copyin_alloc(args[i].name, 2061 args[i].namelen, error_str, error_str_len); 2062 if (args[i].kname == NULL) 2063 goto bailout; 2064 2065 if (args[i].kname[args[i].namelen - 1] != '\0') { 2066 snprintf(error_str, error_str_len, "Argument %d " 2067 "name is not NUL-terminated", i); 2068 goto bailout; 2069 } 2070 2071 args[i].kvalue = NULL; 2072 2073 tmpptr = ctl_copyin_alloc(args[i].value, 2074 args[i].vallen, error_str, error_str_len); 2075 if (tmpptr == NULL) 2076 goto bailout; 2077 2078 args[i].kvalue = tmpptr; 2079 2080 if ((args[i].flags & CTL_BEARG_ASCII) 2081 && (tmpptr[args[i].vallen - 1] != '\0')) { 2082 snprintf(error_str, error_str_len, "Argument %d " 2083 "value is not NUL-terminated", i); 2084 goto bailout; 2085 } 2086 } 2087 2088 return (args); 2089bailout: 2090 2091 ctl_free_args(num_be_args, args); 2092 2093 return (NULL); 2094} 2095 2096/* 2097 * Escape characters that are illegal or not recommended in XML. 2098 */ 2099int 2100ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2101{ 2102 int retval; 2103 2104 retval = 0; 2105 2106 for (; *str; str++) { 2107 switch (*str) { 2108 case '&': 2109 retval = sbuf_printf(sb, "&"); 2110 break; 2111 case '>': 2112 retval = sbuf_printf(sb, ">"); 2113 break; 2114 case '<': 2115 retval = sbuf_printf(sb, "<"); 2116 break; 2117 default: 2118 retval = sbuf_putc(sb, *str); 2119 break; 2120 } 2121 2122 if (retval != 0) 2123 break; 2124 2125 } 2126 2127 return (retval); 2128} 2129 2130static int 2131ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2132 struct thread *td) 2133{ 2134 struct ctl_softc *softc; 2135 int retval; 2136 2137 softc = control_softc; 2138 2139 retval = 0; 2140 2141 switch (cmd) { 2142 case CTL_IO: { 2143 union ctl_io *io; 2144 void *pool_tmp; 2145 2146 /* 2147 * If we haven't been "enabled", don't allow any SCSI I/O 2148 * to this FETD. 2149 */ 2150 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2151 retval = EPERM; 2152 break; 2153 } 2154 2155 io = ctl_alloc_io(softc->ioctl_info.fe.ctl_pool_ref); 2156 if (io == NULL) { 2157 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2158 retval = ENOSPC; 2159 break; 2160 } 2161 2162 /* 2163 * Need to save the pool reference so it doesn't get 2164 * spammed by the user's ctl_io. 2165 */ 2166 pool_tmp = io->io_hdr.pool; 2167 2168 memcpy(io, (void *)addr, sizeof(*io)); 2169 2170 io->io_hdr.pool = pool_tmp; 2171 /* 2172 * No status yet, so make sure the status is set properly. 2173 */ 2174 io->io_hdr.status = CTL_STATUS_NONE; 2175 2176 /* 2177 * The user sets the initiator ID, target and LUN IDs. 2178 */ 2179 io->io_hdr.nexus.targ_port = softc->ioctl_info.fe.targ_port; 2180 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2181 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2182 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2183 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2184 2185 retval = ctl_ioctl_submit_wait(io); 2186 2187 if (retval != 0) { 2188 ctl_free_io(io); 2189 break; 2190 } 2191 2192 memcpy((void *)addr, io, sizeof(*io)); 2193 2194 /* return this to our pool */ 2195 ctl_free_io(io); 2196 2197 break; 2198 } 2199 case CTL_ENABLE_PORT: 2200 case CTL_DISABLE_PORT: 2201 case CTL_SET_PORT_WWNS: { 2202 struct ctl_frontend *fe; 2203 struct ctl_port_entry *entry; 2204 2205 entry = (struct ctl_port_entry *)addr; 2206 2207 mtx_lock(&softc->ctl_lock); 2208 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2209 int action, done; 2210 2211 action = 0; 2212 done = 0; 2213 2214 if ((entry->port_type == CTL_PORT_NONE) 2215 && (entry->targ_port == fe->targ_port)) { 2216 /* 2217 * If the user only wants to enable or 2218 * disable or set WWNs on a specific port, 2219 * do the operation and we're done. 2220 */ 2221 action = 1; 2222 done = 1; 2223 } else if (entry->port_type & fe->port_type) { 2224 /* 2225 * Compare the user's type mask with the 2226 * particular frontend type to see if we 2227 * have a match. 2228 */ 2229 action = 1; 2230 done = 0; 2231 2232 /* 2233 * Make sure the user isn't trying to set 2234 * WWNs on multiple ports at the same time. 2235 */ 2236 if (cmd == CTL_SET_PORT_WWNS) { 2237 printf("%s: Can't set WWNs on " 2238 "multiple ports\n", __func__); 2239 retval = EINVAL; 2240 break; 2241 } 2242 } 2243 if (action != 0) { 2244 /* 2245 * XXX KDM we have to drop the lock here, 2246 * because the online/offline operations 2247 * can potentially block. We need to 2248 * reference count the frontends so they 2249 * can't go away, 2250 */ 2251 mtx_unlock(&softc->ctl_lock); 2252 2253 if (cmd == CTL_ENABLE_PORT) { 2254 struct ctl_lun *lun; 2255 2256 STAILQ_FOREACH(lun, &softc->lun_list, 2257 links) { 2258 fe->lun_enable(fe->targ_lun_arg, 2259 lun->target, 2260 lun->lun); 2261 } 2262 2263 ctl_frontend_online(fe); 2264 } else if (cmd == CTL_DISABLE_PORT) { 2265 struct ctl_lun *lun; 2266 2267 ctl_frontend_offline(fe); 2268 2269 STAILQ_FOREACH(lun, &softc->lun_list, 2270 links) { 2271 fe->lun_disable( 2272 fe->targ_lun_arg, 2273 lun->target, 2274 lun->lun); 2275 } 2276 } 2277 2278 mtx_lock(&softc->ctl_lock); 2279 2280 if (cmd == CTL_SET_PORT_WWNS) 2281 ctl_frontend_set_wwns(fe, 2282 (entry->flags & CTL_PORT_WWNN_VALID) ? 2283 1 : 0, entry->wwnn, 2284 (entry->flags & CTL_PORT_WWPN_VALID) ? 2285 1 : 0, entry->wwpn); 2286 } 2287 if (done != 0) 2288 break; 2289 } 2290 mtx_unlock(&softc->ctl_lock); 2291 break; 2292 } 2293 case CTL_GET_PORT_LIST: { 2294 struct ctl_frontend *fe; 2295 struct ctl_port_list *list; 2296 int i; 2297 2298 list = (struct ctl_port_list *)addr; 2299 2300 if (list->alloc_len != (list->alloc_num * 2301 sizeof(struct ctl_port_entry))) { 2302 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2303 "alloc_num %u * sizeof(struct ctl_port_entry) " 2304 "%zu\n", __func__, list->alloc_len, 2305 list->alloc_num, sizeof(struct ctl_port_entry)); 2306 retval = EINVAL; 2307 break; 2308 } 2309 list->fill_len = 0; 2310 list->fill_num = 0; 2311 list->dropped_num = 0; 2312 i = 0; 2313 mtx_lock(&softc->ctl_lock); 2314 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2315 struct ctl_port_entry entry, *list_entry; 2316 2317 if (list->fill_num >= list->alloc_num) { 2318 list->dropped_num++; 2319 continue; 2320 } 2321 2322 entry.port_type = fe->port_type; 2323 strlcpy(entry.port_name, fe->port_name, 2324 sizeof(entry.port_name)); 2325 entry.targ_port = fe->targ_port; 2326 entry.physical_port = fe->physical_port; 2327 entry.virtual_port = fe->virtual_port; 2328 entry.wwnn = fe->wwnn; 2329 entry.wwpn = fe->wwpn; 2330 if (fe->status & CTL_PORT_STATUS_ONLINE) 2331 entry.online = 1; 2332 else 2333 entry.online = 0; 2334 2335 list_entry = &list->entries[i]; 2336 2337 retval = copyout(&entry, list_entry, sizeof(entry)); 2338 if (retval != 0) { 2339 printf("%s: CTL_GET_PORT_LIST: copyout " 2340 "returned %d\n", __func__, retval); 2341 break; 2342 } 2343 i++; 2344 list->fill_num++; 2345 list->fill_len += sizeof(entry); 2346 } 2347 mtx_unlock(&softc->ctl_lock); 2348 2349 /* 2350 * If this is non-zero, we had a copyout fault, so there's 2351 * probably no point in attempting to set the status inside 2352 * the structure. 2353 */ 2354 if (retval != 0) 2355 break; 2356 2357 if (list->dropped_num > 0) 2358 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2359 else 2360 list->status = CTL_PORT_LIST_OK; 2361 break; 2362 } 2363 case CTL_DUMP_OOA: { 2364 struct ctl_lun *lun; 2365 union ctl_io *io; 2366 char printbuf[128]; 2367 struct sbuf sb; 2368 2369 mtx_lock(&softc->ctl_lock); 2370 printf("Dumping OOA queues:\n"); 2371 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2372 mtx_lock(&lun->lun_lock); 2373 for (io = (union ctl_io *)TAILQ_FIRST( 2374 &lun->ooa_queue); io != NULL; 2375 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2376 ooa_links)) { 2377 sbuf_new(&sb, printbuf, sizeof(printbuf), 2378 SBUF_FIXEDLEN); 2379 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2380 (intmax_t)lun->lun, 2381 io->scsiio.tag_num, 2382 (io->io_hdr.flags & 2383 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2384 (io->io_hdr.flags & 2385 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2386 (io->io_hdr.flags & 2387 CTL_FLAG_ABORT) ? " ABORT" : "", 2388 (io->io_hdr.flags & 2389 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2390 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2391 sbuf_finish(&sb); 2392 printf("%s\n", sbuf_data(&sb)); 2393 } 2394 mtx_unlock(&lun->lun_lock); 2395 } 2396 printf("OOA queues dump done\n"); 2397 mtx_unlock(&softc->ctl_lock); 2398 break; 2399 } 2400 case CTL_GET_OOA: { 2401 struct ctl_lun *lun; 2402 struct ctl_ooa *ooa_hdr; 2403 struct ctl_ooa_entry *entries; 2404 uint32_t cur_fill_num; 2405 2406 ooa_hdr = (struct ctl_ooa *)addr; 2407 2408 if ((ooa_hdr->alloc_len == 0) 2409 || (ooa_hdr->alloc_num == 0)) { 2410 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2411 "must be non-zero\n", __func__, 2412 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2413 retval = EINVAL; 2414 break; 2415 } 2416 2417 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2418 sizeof(struct ctl_ooa_entry))) { 2419 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2420 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2421 __func__, ooa_hdr->alloc_len, 2422 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2423 retval = EINVAL; 2424 break; 2425 } 2426 2427 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2428 if (entries == NULL) { 2429 printf("%s: could not allocate %d bytes for OOA " 2430 "dump\n", __func__, ooa_hdr->alloc_len); 2431 retval = ENOMEM; 2432 break; 2433 } 2434 2435 mtx_lock(&softc->ctl_lock); 2436 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2437 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2438 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2439 mtx_unlock(&softc->ctl_lock); 2440 free(entries, M_CTL); 2441 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2442 __func__, (uintmax_t)ooa_hdr->lun_num); 2443 retval = EINVAL; 2444 break; 2445 } 2446 2447 cur_fill_num = 0; 2448 2449 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2450 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2451 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2452 ooa_hdr, entries); 2453 if (retval != 0) 2454 break; 2455 } 2456 if (retval != 0) { 2457 mtx_unlock(&softc->ctl_lock); 2458 free(entries, M_CTL); 2459 break; 2460 } 2461 } else { 2462 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2463 2464 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2465 entries); 2466 } 2467 mtx_unlock(&softc->ctl_lock); 2468 2469 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2470 ooa_hdr->fill_len = ooa_hdr->fill_num * 2471 sizeof(struct ctl_ooa_entry); 2472 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2473 if (retval != 0) { 2474 printf("%s: error copying out %d bytes for OOA dump\n", 2475 __func__, ooa_hdr->fill_len); 2476 } 2477 2478 getbintime(&ooa_hdr->cur_bt); 2479 2480 if (cur_fill_num > ooa_hdr->alloc_num) { 2481 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2482 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2483 } else { 2484 ooa_hdr->dropped_num = 0; 2485 ooa_hdr->status = CTL_OOA_OK; 2486 } 2487 2488 free(entries, M_CTL); 2489 break; 2490 } 2491 case CTL_CHECK_OOA: { 2492 union ctl_io *io; 2493 struct ctl_lun *lun; 2494 struct ctl_ooa_info *ooa_info; 2495 2496 2497 ooa_info = (struct ctl_ooa_info *)addr; 2498 2499 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2500 ooa_info->status = CTL_OOA_INVALID_LUN; 2501 break; 2502 } 2503 mtx_lock(&softc->ctl_lock); 2504 lun = softc->ctl_luns[ooa_info->lun_id]; 2505 if (lun == NULL) { 2506 mtx_unlock(&softc->ctl_lock); 2507 ooa_info->status = CTL_OOA_INVALID_LUN; 2508 break; 2509 } 2510 mtx_lock(&lun->lun_lock); 2511 mtx_unlock(&softc->ctl_lock); 2512 ooa_info->num_entries = 0; 2513 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2514 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2515 &io->io_hdr, ooa_links)) { 2516 ooa_info->num_entries++; 2517 } 2518 mtx_unlock(&lun->lun_lock); 2519 2520 ooa_info->status = CTL_OOA_SUCCESS; 2521 2522 break; 2523 } 2524 case CTL_HARD_START: 2525 case CTL_HARD_STOP: { 2526 struct ctl_fe_ioctl_startstop_info ss_info; 2527 struct cfi_metatask *metatask; 2528 struct mtx hs_mtx; 2529 2530 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2531 2532 cv_init(&ss_info.sem, "hard start/stop cv" ); 2533 2534 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2535 if (metatask == NULL) { 2536 retval = ENOMEM; 2537 mtx_destroy(&hs_mtx); 2538 break; 2539 } 2540 2541 if (cmd == CTL_HARD_START) 2542 metatask->tasktype = CFI_TASK_STARTUP; 2543 else 2544 metatask->tasktype = CFI_TASK_SHUTDOWN; 2545 2546 metatask->callback = ctl_ioctl_hard_startstop_callback; 2547 metatask->callback_arg = &ss_info; 2548 2549 cfi_action(metatask); 2550 2551 /* Wait for the callback */ 2552 mtx_lock(&hs_mtx); 2553 cv_wait_sig(&ss_info.sem, &hs_mtx); 2554 mtx_unlock(&hs_mtx); 2555 2556 /* 2557 * All information has been copied from the metatask by the 2558 * time cv_broadcast() is called, so we free the metatask here. 2559 */ 2560 cfi_free_metatask(metatask); 2561 2562 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2563 2564 mtx_destroy(&hs_mtx); 2565 break; 2566 } 2567 case CTL_BBRREAD: { 2568 struct ctl_bbrread_info *bbr_info; 2569 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2570 struct mtx bbr_mtx; 2571 struct cfi_metatask *metatask; 2572 2573 bbr_info = (struct ctl_bbrread_info *)addr; 2574 2575 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2576 2577 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2578 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2579 2580 fe_bbr_info.bbr_info = bbr_info; 2581 fe_bbr_info.lock = &bbr_mtx; 2582 2583 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2584 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2585 2586 if (metatask == NULL) { 2587 mtx_destroy(&bbr_mtx); 2588 cv_destroy(&fe_bbr_info.sem); 2589 retval = ENOMEM; 2590 break; 2591 } 2592 metatask->tasktype = CFI_TASK_BBRREAD; 2593 metatask->callback = ctl_ioctl_bbrread_callback; 2594 metatask->callback_arg = &fe_bbr_info; 2595 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2596 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2597 metatask->taskinfo.bbrread.len = bbr_info->len; 2598 2599 cfi_action(metatask); 2600 2601 mtx_lock(&bbr_mtx); 2602 while (fe_bbr_info.wakeup_done == 0) 2603 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2604 mtx_unlock(&bbr_mtx); 2605 2606 bbr_info->status = metatask->status; 2607 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2608 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2609 memcpy(&bbr_info->sense_data, 2610 &metatask->taskinfo.bbrread.sense_data, 2611 ctl_min(sizeof(bbr_info->sense_data), 2612 sizeof(metatask->taskinfo.bbrread.sense_data))); 2613 2614 cfi_free_metatask(metatask); 2615 2616 mtx_destroy(&bbr_mtx); 2617 cv_destroy(&fe_bbr_info.sem); 2618 2619 break; 2620 } 2621 case CTL_DELAY_IO: { 2622 struct ctl_io_delay_info *delay_info; 2623#ifdef CTL_IO_DELAY 2624 struct ctl_lun *lun; 2625#endif /* CTL_IO_DELAY */ 2626 2627 delay_info = (struct ctl_io_delay_info *)addr; 2628 2629#ifdef CTL_IO_DELAY 2630 mtx_lock(&softc->ctl_lock); 2631 2632 if ((delay_info->lun_id > CTL_MAX_LUNS) 2633 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2634 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2635 } else { 2636 lun = softc->ctl_luns[delay_info->lun_id]; 2637 mtx_lock(&lun->lun_lock); 2638 2639 delay_info->status = CTL_DELAY_STATUS_OK; 2640 2641 switch (delay_info->delay_type) { 2642 case CTL_DELAY_TYPE_CONT: 2643 break; 2644 case CTL_DELAY_TYPE_ONESHOT: 2645 break; 2646 default: 2647 delay_info->status = 2648 CTL_DELAY_STATUS_INVALID_TYPE; 2649 break; 2650 } 2651 2652 switch (delay_info->delay_loc) { 2653 case CTL_DELAY_LOC_DATAMOVE: 2654 lun->delay_info.datamove_type = 2655 delay_info->delay_type; 2656 lun->delay_info.datamove_delay = 2657 delay_info->delay_secs; 2658 break; 2659 case CTL_DELAY_LOC_DONE: 2660 lun->delay_info.done_type = 2661 delay_info->delay_type; 2662 lun->delay_info.done_delay = 2663 delay_info->delay_secs; 2664 break; 2665 default: 2666 delay_info->status = 2667 CTL_DELAY_STATUS_INVALID_LOC; 2668 break; 2669 } 2670 mtx_unlock(&lun->lun_lock); 2671 } 2672 2673 mtx_unlock(&softc->ctl_lock); 2674#else 2675 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2676#endif /* CTL_IO_DELAY */ 2677 break; 2678 } 2679 case CTL_REALSYNC_SET: { 2680 int *syncstate; 2681 2682 syncstate = (int *)addr; 2683 2684 mtx_lock(&softc->ctl_lock); 2685 switch (*syncstate) { 2686 case 0: 2687 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2688 break; 2689 case 1: 2690 softc->flags |= CTL_FLAG_REAL_SYNC; 2691 break; 2692 default: 2693 retval = EINVAL; 2694 break; 2695 } 2696 mtx_unlock(&softc->ctl_lock); 2697 break; 2698 } 2699 case CTL_REALSYNC_GET: { 2700 int *syncstate; 2701 2702 syncstate = (int*)addr; 2703 2704 mtx_lock(&softc->ctl_lock); 2705 if (softc->flags & CTL_FLAG_REAL_SYNC) 2706 *syncstate = 1; 2707 else 2708 *syncstate = 0; 2709 mtx_unlock(&softc->ctl_lock); 2710 2711 break; 2712 } 2713 case CTL_SETSYNC: 2714 case CTL_GETSYNC: { 2715 struct ctl_sync_info *sync_info; 2716 struct ctl_lun *lun; 2717 2718 sync_info = (struct ctl_sync_info *)addr; 2719 2720 mtx_lock(&softc->ctl_lock); 2721 lun = softc->ctl_luns[sync_info->lun_id]; 2722 if (lun == NULL) { 2723 mtx_unlock(&softc->ctl_lock); 2724 sync_info->status = CTL_GS_SYNC_NO_LUN; 2725 } 2726 /* 2727 * Get or set the sync interval. We're not bounds checking 2728 * in the set case, hopefully the user won't do something 2729 * silly. 2730 */ 2731 mtx_lock(&lun->lun_lock); 2732 mtx_unlock(&softc->ctl_lock); 2733 if (cmd == CTL_GETSYNC) 2734 sync_info->sync_interval = lun->sync_interval; 2735 else 2736 lun->sync_interval = sync_info->sync_interval; 2737 mtx_unlock(&lun->lun_lock); 2738 2739 sync_info->status = CTL_GS_SYNC_OK; 2740 2741 break; 2742 } 2743 case CTL_GETSTATS: { 2744 struct ctl_stats *stats; 2745 struct ctl_lun *lun; 2746 int i; 2747 2748 stats = (struct ctl_stats *)addr; 2749 2750 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2751 stats->alloc_len) { 2752 stats->status = CTL_SS_NEED_MORE_SPACE; 2753 stats->num_luns = softc->num_luns; 2754 break; 2755 } 2756 /* 2757 * XXX KDM no locking here. If the LUN list changes, 2758 * things can blow up. 2759 */ 2760 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2761 i++, lun = STAILQ_NEXT(lun, links)) { 2762 retval = copyout(&lun->stats, &stats->lun_stats[i], 2763 sizeof(lun->stats)); 2764 if (retval != 0) 2765 break; 2766 } 2767 stats->num_luns = softc->num_luns; 2768 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2769 softc->num_luns; 2770 stats->status = CTL_SS_OK; 2771#ifdef CTL_TIME_IO 2772 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2773#else 2774 stats->flags = CTL_STATS_FLAG_NONE; 2775#endif 2776 getnanouptime(&stats->timestamp); 2777 break; 2778 } 2779 case CTL_ERROR_INJECT: { 2780 struct ctl_error_desc *err_desc, *new_err_desc; 2781 struct ctl_lun *lun; 2782 2783 err_desc = (struct ctl_error_desc *)addr; 2784 2785 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2786 M_WAITOK | M_ZERO); 2787 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2788 2789 mtx_lock(&softc->ctl_lock); 2790 lun = softc->ctl_luns[err_desc->lun_id]; 2791 if (lun == NULL) { 2792 mtx_unlock(&softc->ctl_lock); 2793 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2794 __func__, (uintmax_t)err_desc->lun_id); 2795 retval = EINVAL; 2796 break; 2797 } 2798 mtx_lock(&lun->lun_lock); 2799 mtx_unlock(&softc->ctl_lock); 2800 2801 /* 2802 * We could do some checking here to verify the validity 2803 * of the request, but given the complexity of error 2804 * injection requests, the checking logic would be fairly 2805 * complex. 2806 * 2807 * For now, if the request is invalid, it just won't get 2808 * executed and might get deleted. 2809 */ 2810 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2811 2812 /* 2813 * XXX KDM check to make sure the serial number is unique, 2814 * in case we somehow manage to wrap. That shouldn't 2815 * happen for a very long time, but it's the right thing to 2816 * do. 2817 */ 2818 new_err_desc->serial = lun->error_serial; 2819 err_desc->serial = lun->error_serial; 2820 lun->error_serial++; 2821 2822 mtx_unlock(&lun->lun_lock); 2823 break; 2824 } 2825 case CTL_ERROR_INJECT_DELETE: { 2826 struct ctl_error_desc *delete_desc, *desc, *desc2; 2827 struct ctl_lun *lun; 2828 int delete_done; 2829 2830 delete_desc = (struct ctl_error_desc *)addr; 2831 delete_done = 0; 2832 2833 mtx_lock(&softc->ctl_lock); 2834 lun = softc->ctl_luns[delete_desc->lun_id]; 2835 if (lun == NULL) { 2836 mtx_unlock(&softc->ctl_lock); 2837 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2838 __func__, (uintmax_t)delete_desc->lun_id); 2839 retval = EINVAL; 2840 break; 2841 } 2842 mtx_lock(&lun->lun_lock); 2843 mtx_unlock(&softc->ctl_lock); 2844 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2845 if (desc->serial != delete_desc->serial) 2846 continue; 2847 2848 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2849 links); 2850 free(desc, M_CTL); 2851 delete_done = 1; 2852 } 2853 mtx_unlock(&lun->lun_lock); 2854 if (delete_done == 0) { 2855 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2856 "error serial %ju on LUN %u\n", __func__, 2857 delete_desc->serial, delete_desc->lun_id); 2858 retval = EINVAL; 2859 break; 2860 } 2861 break; 2862 } 2863 case CTL_DUMP_STRUCTS: { 2864 int i, j, k; 2865 struct ctl_frontend *fe; 2866 2867 printf("CTL IID to WWPN map start:\n"); 2868 for (i = 0; i < CTL_MAX_PORTS; i++) { 2869 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2870 if (softc->wwpn_iid[i][j].in_use == 0) 2871 continue; 2872 2873 printf("port %d iid %u WWPN %#jx\n", 2874 softc->wwpn_iid[i][j].port, 2875 softc->wwpn_iid[i][j].iid, 2876 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2877 } 2878 } 2879 printf("CTL IID to WWPN map end\n"); 2880 printf("CTL Persistent Reservation information start:\n"); 2881 for (i = 0; i < CTL_MAX_LUNS; i++) { 2882 struct ctl_lun *lun; 2883 2884 lun = softc->ctl_luns[i]; 2885 2886 if ((lun == NULL) 2887 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2888 continue; 2889 2890 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2891 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2892 if (lun->per_res[j+k].registered == 0) 2893 continue; 2894 printf("LUN %d port %d iid %d key " 2895 "%#jx\n", i, j, k, 2896 (uintmax_t)scsi_8btou64( 2897 lun->per_res[j+k].res_key.key)); 2898 } 2899 } 2900 } 2901 printf("CTL Persistent Reservation information end\n"); 2902 printf("CTL Frontends:\n"); 2903 /* 2904 * XXX KDM calling this without a lock. We'd likely want 2905 * to drop the lock before calling the frontend's dump 2906 * routine anyway. 2907 */ 2908 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2909 printf("Frontend %s Type %u pport %d vport %d WWNN " 2910 "%#jx WWPN %#jx\n", fe->port_name, fe->port_type, 2911 fe->physical_port, fe->virtual_port, 2912 (uintmax_t)fe->wwnn, (uintmax_t)fe->wwpn); 2913 2914 /* 2915 * Frontends are not required to support the dump 2916 * routine. 2917 */ 2918 if (fe->fe_dump == NULL) 2919 continue; 2920 2921 fe->fe_dump(); 2922 } 2923 printf("CTL Frontend information end\n"); 2924 break; 2925 } 2926 case CTL_LUN_REQ: { 2927 struct ctl_lun_req *lun_req; 2928 struct ctl_backend_driver *backend; 2929 2930 lun_req = (struct ctl_lun_req *)addr; 2931 2932 backend = ctl_backend_find(lun_req->backend); 2933 if (backend == NULL) { 2934 lun_req->status = CTL_LUN_ERROR; 2935 snprintf(lun_req->error_str, 2936 sizeof(lun_req->error_str), 2937 "Backend \"%s\" not found.", 2938 lun_req->backend); 2939 break; 2940 } 2941 if (lun_req->num_be_args > 0) { 2942 lun_req->kern_be_args = ctl_copyin_args( 2943 lun_req->num_be_args, 2944 lun_req->be_args, 2945 lun_req->error_str, 2946 sizeof(lun_req->error_str)); 2947 if (lun_req->kern_be_args == NULL) { 2948 lun_req->status = CTL_LUN_ERROR; 2949 break; 2950 } 2951 } 2952 2953 retval = backend->ioctl(dev, cmd, addr, flag, td); 2954 2955 if (lun_req->num_be_args > 0) { 2956 ctl_free_args(lun_req->num_be_args, 2957 lun_req->kern_be_args); 2958 } 2959 break; 2960 } 2961 case CTL_LUN_LIST: { 2962 struct sbuf *sb; 2963 struct ctl_lun *lun; 2964 struct ctl_lun_list *list; 2965 struct ctl_be_lun_option *opt; 2966 2967 list = (struct ctl_lun_list *)addr; 2968 2969 /* 2970 * Allocate a fixed length sbuf here, based on the length 2971 * of the user's buffer. We could allocate an auto-extending 2972 * buffer, and then tell the user how much larger our 2973 * amount of data is than his buffer, but that presents 2974 * some problems: 2975 * 2976 * 1. The sbuf(9) routines use a blocking malloc, and so 2977 * we can't hold a lock while calling them with an 2978 * auto-extending buffer. 2979 * 2980 * 2. There is not currently a LUN reference counting 2981 * mechanism, outside of outstanding transactions on 2982 * the LUN's OOA queue. So a LUN could go away on us 2983 * while we're getting the LUN number, backend-specific 2984 * information, etc. Thus, given the way things 2985 * currently work, we need to hold the CTL lock while 2986 * grabbing LUN information. 2987 * 2988 * So, from the user's standpoint, the best thing to do is 2989 * allocate what he thinks is a reasonable buffer length, 2990 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 2991 * double the buffer length and try again. (And repeat 2992 * that until he succeeds.) 2993 */ 2994 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 2995 if (sb == NULL) { 2996 list->status = CTL_LUN_LIST_ERROR; 2997 snprintf(list->error_str, sizeof(list->error_str), 2998 "Unable to allocate %d bytes for LUN list", 2999 list->alloc_len); 3000 break; 3001 } 3002 3003 sbuf_printf(sb, "<ctllunlist>\n"); 3004 3005 mtx_lock(&softc->ctl_lock); 3006 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3007 mtx_lock(&lun->lun_lock); 3008 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3009 (uintmax_t)lun->lun); 3010 3011 /* 3012 * Bail out as soon as we see that we've overfilled 3013 * the buffer. 3014 */ 3015 if (retval != 0) 3016 break; 3017 3018 retval = sbuf_printf(sb, "\t<backend_type>%s" 3019 "</backend_type>\n", 3020 (lun->backend == NULL) ? "none" : 3021 lun->backend->name); 3022 3023 if (retval != 0) 3024 break; 3025 3026 retval = sbuf_printf(sb, "\t<lun_type>%d</lun_type>\n", 3027 lun->be_lun->lun_type); 3028 3029 if (retval != 0) 3030 break; 3031 3032 if (lun->backend == NULL) { 3033 retval = sbuf_printf(sb, "</lun>\n"); 3034 if (retval != 0) 3035 break; 3036 continue; 3037 } 3038 3039 retval = sbuf_printf(sb, "\t<size>%ju</size>\n", 3040 (lun->be_lun->maxlba > 0) ? 3041 lun->be_lun->maxlba + 1 : 0); 3042 3043 if (retval != 0) 3044 break; 3045 3046 retval = sbuf_printf(sb, "\t<blocksize>%u</blocksize>\n", 3047 lun->be_lun->blocksize); 3048 3049 if (retval != 0) 3050 break; 3051 3052 retval = sbuf_printf(sb, "\t<serial_number>"); 3053 3054 if (retval != 0) 3055 break; 3056 3057 retval = ctl_sbuf_printf_esc(sb, 3058 lun->be_lun->serial_num); 3059 3060 if (retval != 0) 3061 break; 3062 3063 retval = sbuf_printf(sb, "</serial_number>\n"); 3064 3065 if (retval != 0) 3066 break; 3067 3068 retval = sbuf_printf(sb, "\t<device_id>"); 3069 3070 if (retval != 0) 3071 break; 3072 3073 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3074 3075 if (retval != 0) 3076 break; 3077 3078 retval = sbuf_printf(sb, "</device_id>\n"); 3079 3080 if (retval != 0) 3081 break; 3082 3083 if (lun->backend->lun_info != NULL) { 3084 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3085 if (retval != 0) 3086 break; 3087 } 3088 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3089 retval = sbuf_printf(sb, "\t<%s>%s</%s>\n", 3090 opt->name, opt->value, opt->name); 3091 if (retval != 0) 3092 break; 3093 } 3094 3095 retval = sbuf_printf(sb, "</lun>\n"); 3096 3097 if (retval != 0) 3098 break; 3099 mtx_unlock(&lun->lun_lock); 3100 } 3101 if (lun != NULL) 3102 mtx_unlock(&lun->lun_lock); 3103 mtx_unlock(&softc->ctl_lock); 3104 3105 if ((retval != 0) 3106 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3107 retval = 0; 3108 sbuf_delete(sb); 3109 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3110 snprintf(list->error_str, sizeof(list->error_str), 3111 "Out of space, %d bytes is too small", 3112 list->alloc_len); 3113 break; 3114 } 3115 3116 sbuf_finish(sb); 3117 3118 retval = copyout(sbuf_data(sb), list->lun_xml, 3119 sbuf_len(sb) + 1); 3120 3121 list->fill_len = sbuf_len(sb) + 1; 3122 list->status = CTL_LUN_LIST_OK; 3123 sbuf_delete(sb); 3124 break; 3125 } 3126 case CTL_ISCSI: { 3127 struct ctl_iscsi *ci; 3128 struct ctl_frontend *fe; 3129 3130 ci = (struct ctl_iscsi *)addr; 3131 3132 mtx_lock(&softc->ctl_lock); 3133 STAILQ_FOREACH(fe, &softc->fe_list, links) { 3134 if (strcmp(fe->port_name, "iscsi") == 0) 3135 break; 3136 } 3137 mtx_unlock(&softc->ctl_lock); 3138 3139 if (fe == NULL) { 3140 ci->status = CTL_ISCSI_ERROR; 3141 snprintf(ci->error_str, sizeof(ci->error_str), "Backend \"iscsi\" not found."); 3142 break; 3143 } 3144 3145 retval = fe->ioctl(dev, cmd, addr, flag, td); 3146 break; 3147 } 3148 default: { 3149 /* XXX KDM should we fix this? */ 3150#if 0 3151 struct ctl_backend_driver *backend; 3152 unsigned int type; 3153 int found; 3154 3155 found = 0; 3156 3157 /* 3158 * We encode the backend type as the ioctl type for backend 3159 * ioctls. So parse it out here, and then search for a 3160 * backend of this type. 3161 */ 3162 type = _IOC_TYPE(cmd); 3163 3164 STAILQ_FOREACH(backend, &softc->be_list, links) { 3165 if (backend->type == type) { 3166 found = 1; 3167 break; 3168 } 3169 } 3170 if (found == 0) { 3171 printf("ctl: unknown ioctl command %#lx or backend " 3172 "%d\n", cmd, type); 3173 retval = EINVAL; 3174 break; 3175 } 3176 retval = backend->ioctl(dev, cmd, addr, flag, td); 3177#endif 3178 retval = ENOTTY; 3179 break; 3180 } 3181 } 3182 return (retval); 3183} 3184 3185uint32_t 3186ctl_get_initindex(struct ctl_nexus *nexus) 3187{ 3188 if (nexus->targ_port < CTL_MAX_PORTS) 3189 return (nexus->initid.id + 3190 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3191 else 3192 return (nexus->initid.id + 3193 ((nexus->targ_port - CTL_MAX_PORTS) * 3194 CTL_MAX_INIT_PER_PORT)); 3195} 3196 3197uint32_t 3198ctl_get_resindex(struct ctl_nexus *nexus) 3199{ 3200 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3201} 3202 3203uint32_t 3204ctl_port_idx(int port_num) 3205{ 3206 if (port_num < CTL_MAX_PORTS) 3207 return(port_num); 3208 else 3209 return(port_num - CTL_MAX_PORTS); 3210} 3211 3212/* 3213 * Note: This only works for bitmask sizes that are at least 32 bits, and 3214 * that are a power of 2. 3215 */ 3216int 3217ctl_ffz(uint32_t *mask, uint32_t size) 3218{ 3219 uint32_t num_chunks, num_pieces; 3220 int i, j; 3221 3222 num_chunks = (size >> 5); 3223 if (num_chunks == 0) 3224 num_chunks++; 3225 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3226 3227 for (i = 0; i < num_chunks; i++) { 3228 for (j = 0; j < num_pieces; j++) { 3229 if ((mask[i] & (1 << j)) == 0) 3230 return ((i << 5) + j); 3231 } 3232 } 3233 3234 return (-1); 3235} 3236 3237int 3238ctl_set_mask(uint32_t *mask, uint32_t bit) 3239{ 3240 uint32_t chunk, piece; 3241 3242 chunk = bit >> 5; 3243 piece = bit % (sizeof(uint32_t) * 8); 3244 3245 if ((mask[chunk] & (1 << piece)) != 0) 3246 return (-1); 3247 else 3248 mask[chunk] |= (1 << piece); 3249 3250 return (0); 3251} 3252 3253int 3254ctl_clear_mask(uint32_t *mask, uint32_t bit) 3255{ 3256 uint32_t chunk, piece; 3257 3258 chunk = bit >> 5; 3259 piece = bit % (sizeof(uint32_t) * 8); 3260 3261 if ((mask[chunk] & (1 << piece)) == 0) 3262 return (-1); 3263 else 3264 mask[chunk] &= ~(1 << piece); 3265 3266 return (0); 3267} 3268 3269int 3270ctl_is_set(uint32_t *mask, uint32_t bit) 3271{ 3272 uint32_t chunk, piece; 3273 3274 chunk = bit >> 5; 3275 piece = bit % (sizeof(uint32_t) * 8); 3276 3277 if ((mask[chunk] & (1 << piece)) == 0) 3278 return (0); 3279 else 3280 return (1); 3281} 3282 3283#ifdef unused 3284/* 3285 * The bus, target and lun are optional, they can be filled in later. 3286 * can_wait is used to determine whether we can wait on the malloc or not. 3287 */ 3288union ctl_io* 3289ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3290 uint32_t targ_lun, int can_wait) 3291{ 3292 union ctl_io *io; 3293 3294 if (can_wait) 3295 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3296 else 3297 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3298 3299 if (io != NULL) { 3300 io->io_hdr.io_type = io_type; 3301 io->io_hdr.targ_port = targ_port; 3302 /* 3303 * XXX KDM this needs to change/go away. We need to move 3304 * to a preallocated pool of ctl_scsiio structures. 3305 */ 3306 io->io_hdr.nexus.targ_target.id = targ_target; 3307 io->io_hdr.nexus.targ_lun = targ_lun; 3308 } 3309 3310 return (io); 3311} 3312 3313void 3314ctl_kfree_io(union ctl_io *io) 3315{ 3316 free(io, M_CTL); 3317} 3318#endif /* unused */ 3319 3320/* 3321 * ctl_softc, pool_type, total_ctl_io are passed in. 3322 * npool is passed out. 3323 */ 3324int 3325ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3326 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3327{ 3328 uint32_t i; 3329 union ctl_io *cur_io, *next_io; 3330 struct ctl_io_pool *pool; 3331 int retval; 3332 3333 retval = 0; 3334 3335 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3336 M_NOWAIT | M_ZERO); 3337 if (pool == NULL) { 3338 retval = ENOMEM; 3339 goto bailout; 3340 } 3341 3342 pool->type = pool_type; 3343 pool->ctl_softc = ctl_softc; 3344 3345 mtx_lock(&ctl_softc->pool_lock); 3346 pool->id = ctl_softc->cur_pool_id++; 3347 mtx_unlock(&ctl_softc->pool_lock); 3348 3349 pool->flags = CTL_POOL_FLAG_NONE; 3350 pool->refcount = 1; /* Reference for validity. */ 3351 STAILQ_INIT(&pool->free_queue); 3352 3353 /* 3354 * XXX KDM other options here: 3355 * - allocate a page at a time 3356 * - allocate one big chunk of memory. 3357 * Page allocation might work well, but would take a little more 3358 * tracking. 3359 */ 3360 for (i = 0; i < total_ctl_io; i++) { 3361 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTLIO, 3362 M_NOWAIT); 3363 if (cur_io == NULL) { 3364 retval = ENOMEM; 3365 break; 3366 } 3367 cur_io->io_hdr.pool = pool; 3368 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3369 pool->total_ctl_io++; 3370 pool->free_ctl_io++; 3371 } 3372 3373 if (retval != 0) { 3374 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3375 cur_io != NULL; cur_io = next_io) { 3376 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3377 links); 3378 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3379 ctl_io_hdr, links); 3380 free(cur_io, M_CTLIO); 3381 } 3382 3383 free(pool, M_CTL); 3384 goto bailout; 3385 } 3386 mtx_lock(&ctl_softc->pool_lock); 3387 ctl_softc->num_pools++; 3388 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3389 /* 3390 * Increment our usage count if this is an external consumer, so we 3391 * can't get unloaded until the external consumer (most likely a 3392 * FETD) unloads and frees his pool. 3393 * 3394 * XXX KDM will this increment the caller's module use count, or 3395 * mine? 3396 */ 3397#if 0 3398 if ((pool_type != CTL_POOL_EMERGENCY) 3399 && (pool_type != CTL_POOL_INTERNAL) 3400 && (pool_type != CTL_POOL_IOCTL) 3401 && (pool_type != CTL_POOL_4OTHERSC)) 3402 MOD_INC_USE_COUNT; 3403#endif 3404 3405 mtx_unlock(&ctl_softc->pool_lock); 3406 3407 *npool = pool; 3408 3409bailout: 3410 3411 return (retval); 3412} 3413 3414static int 3415ctl_pool_acquire(struct ctl_io_pool *pool) 3416{ 3417 3418 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3419 3420 if (pool->flags & CTL_POOL_FLAG_INVALID) 3421 return (EINVAL); 3422 3423 pool->refcount++; 3424 3425 return (0); 3426} 3427 3428static void 3429ctl_pool_release(struct ctl_io_pool *pool) 3430{ 3431 struct ctl_softc *ctl_softc = pool->ctl_softc; 3432 union ctl_io *io; 3433 3434 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3435 3436 if (--pool->refcount != 0) 3437 return; 3438 3439 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3440 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3441 links); 3442 free(io, M_CTLIO); 3443 } 3444 3445 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3446 ctl_softc->num_pools--; 3447 3448 /* 3449 * XXX KDM will this decrement the caller's usage count or mine? 3450 */ 3451#if 0 3452 if ((pool->type != CTL_POOL_EMERGENCY) 3453 && (pool->type != CTL_POOL_INTERNAL) 3454 && (pool->type != CTL_POOL_IOCTL)) 3455 MOD_DEC_USE_COUNT; 3456#endif 3457 3458 free(pool, M_CTL); 3459} 3460 3461void 3462ctl_pool_free(struct ctl_io_pool *pool) 3463{ 3464 struct ctl_softc *ctl_softc; 3465 3466 if (pool == NULL) 3467 return; 3468 3469 ctl_softc = pool->ctl_softc; 3470 mtx_lock(&ctl_softc->pool_lock); 3471 pool->flags |= CTL_POOL_FLAG_INVALID; 3472 ctl_pool_release(pool); 3473 mtx_unlock(&ctl_softc->pool_lock); 3474} 3475 3476/* 3477 * This routine does not block (except for spinlocks of course). 3478 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3479 * possible. 3480 */ 3481union ctl_io * 3482ctl_alloc_io(void *pool_ref) 3483{ 3484 union ctl_io *io; 3485 struct ctl_softc *ctl_softc; 3486 struct ctl_io_pool *pool, *npool; 3487 struct ctl_io_pool *emergency_pool; 3488 3489 pool = (struct ctl_io_pool *)pool_ref; 3490 3491 if (pool == NULL) { 3492 printf("%s: pool is NULL\n", __func__); 3493 return (NULL); 3494 } 3495 3496 emergency_pool = NULL; 3497 3498 ctl_softc = pool->ctl_softc; 3499 3500 mtx_lock(&ctl_softc->pool_lock); 3501 /* 3502 * First, try to get the io structure from the user's pool. 3503 */ 3504 if (ctl_pool_acquire(pool) == 0) { 3505 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3506 if (io != NULL) { 3507 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3508 pool->total_allocated++; 3509 pool->free_ctl_io--; 3510 mtx_unlock(&ctl_softc->pool_lock); 3511 return (io); 3512 } else 3513 ctl_pool_release(pool); 3514 } 3515 /* 3516 * If he doesn't have any io structures left, search for an 3517 * emergency pool and grab one from there. 3518 */ 3519 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3520 if (npool->type != CTL_POOL_EMERGENCY) 3521 continue; 3522 3523 if (ctl_pool_acquire(npool) != 0) 3524 continue; 3525 3526 emergency_pool = npool; 3527 3528 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3529 if (io != NULL) { 3530 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3531 npool->total_allocated++; 3532 npool->free_ctl_io--; 3533 mtx_unlock(&ctl_softc->pool_lock); 3534 return (io); 3535 } else 3536 ctl_pool_release(npool); 3537 } 3538 3539 /* Drop the spinlock before we malloc */ 3540 mtx_unlock(&ctl_softc->pool_lock); 3541 3542 /* 3543 * The emergency pool (if it exists) didn't have one, so try an 3544 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3545 */ 3546 io = (union ctl_io *)malloc(sizeof(*io), M_CTLIO, M_NOWAIT); 3547 if (io != NULL) { 3548 /* 3549 * If the emergency pool exists but is empty, add this 3550 * ctl_io to its list when it gets freed. 3551 */ 3552 if (emergency_pool != NULL) { 3553 mtx_lock(&ctl_softc->pool_lock); 3554 if (ctl_pool_acquire(emergency_pool) == 0) { 3555 io->io_hdr.pool = emergency_pool; 3556 emergency_pool->total_ctl_io++; 3557 /* 3558 * Need to bump this, otherwise 3559 * total_allocated and total_freed won't 3560 * match when we no longer have anything 3561 * outstanding. 3562 */ 3563 emergency_pool->total_allocated++; 3564 } 3565 mtx_unlock(&ctl_softc->pool_lock); 3566 } else 3567 io->io_hdr.pool = NULL; 3568 } 3569 3570 return (io); 3571} 3572 3573void 3574ctl_free_io(union ctl_io *io) 3575{ 3576 if (io == NULL) 3577 return; 3578 3579 /* 3580 * If this ctl_io has a pool, return it to that pool. 3581 */ 3582 if (io->io_hdr.pool != NULL) { 3583 struct ctl_io_pool *pool; 3584 3585 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3586 mtx_lock(&pool->ctl_softc->pool_lock); 3587 io->io_hdr.io_type = 0xff; 3588 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3589 pool->total_freed++; 3590 pool->free_ctl_io++; 3591 ctl_pool_release(pool); 3592 mtx_unlock(&pool->ctl_softc->pool_lock); 3593 } else { 3594 /* 3595 * Otherwise, just free it. We probably malloced it and 3596 * the emergency pool wasn't available. 3597 */ 3598 free(io, M_CTLIO); 3599 } 3600 3601} 3602 3603void 3604ctl_zero_io(union ctl_io *io) 3605{ 3606 void *pool_ref; 3607 3608 if (io == NULL) 3609 return; 3610 3611 /* 3612 * May need to preserve linked list pointers at some point too. 3613 */ 3614 pool_ref = io->io_hdr.pool; 3615 3616 memset(io, 0, sizeof(*io)); 3617 3618 io->io_hdr.pool = pool_ref; 3619} 3620 3621/* 3622 * This routine is currently used for internal copies of ctl_ios that need 3623 * to persist for some reason after we've already returned status to the 3624 * FETD. (Thus the flag set.) 3625 * 3626 * XXX XXX 3627 * Note that this makes a blind copy of all fields in the ctl_io, except 3628 * for the pool reference. This includes any memory that has been 3629 * allocated! That memory will no longer be valid after done has been 3630 * called, so this would be VERY DANGEROUS for command that actually does 3631 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3632 * start and stop commands, which don't transfer any data, so this is not a 3633 * problem. If it is used for anything else, the caller would also need to 3634 * allocate data buffer space and this routine would need to be modified to 3635 * copy the data buffer(s) as well. 3636 */ 3637void 3638ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3639{ 3640 void *pool_ref; 3641 3642 if ((src == NULL) 3643 || (dest == NULL)) 3644 return; 3645 3646 /* 3647 * May need to preserve linked list pointers at some point too. 3648 */ 3649 pool_ref = dest->io_hdr.pool; 3650 3651 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3652 3653 dest->io_hdr.pool = pool_ref; 3654 /* 3655 * We need to know that this is an internal copy, and doesn't need 3656 * to get passed back to the FETD that allocated it. 3657 */ 3658 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3659} 3660 3661#ifdef NEEDTOPORT 3662static void 3663ctl_update_power_subpage(struct copan_power_subpage *page) 3664{ 3665 int num_luns, num_partitions, config_type; 3666 struct ctl_softc *softc; 3667 cs_BOOL_t aor_present, shelf_50pct_power; 3668 cs_raidset_personality_t rs_type; 3669 int max_active_luns; 3670 3671 softc = control_softc; 3672 3673 /* subtract out the processor LUN */ 3674 num_luns = softc->num_luns - 1; 3675 /* 3676 * Default to 7 LUNs active, which was the only number we allowed 3677 * in the past. 3678 */ 3679 max_active_luns = 7; 3680 3681 num_partitions = config_GetRsPartitionInfo(); 3682 config_type = config_GetConfigType(); 3683 shelf_50pct_power = config_GetShelfPowerMode(); 3684 aor_present = config_IsAorRsPresent(); 3685 3686 rs_type = ddb_GetRsRaidType(1); 3687 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3688 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3689 EPRINT(0, "Unsupported RS type %d!", rs_type); 3690 } 3691 3692 3693 page->total_luns = num_luns; 3694 3695 switch (config_type) { 3696 case 40: 3697 /* 3698 * In a 40 drive configuration, it doesn't matter what DC 3699 * cards we have, whether we have AOR enabled or not, 3700 * partitioning or not, or what type of RAIDset we have. 3701 * In that scenario, we can power up every LUN we present 3702 * to the user. 3703 */ 3704 max_active_luns = num_luns; 3705 3706 break; 3707 case 64: 3708 if (shelf_50pct_power == CS_FALSE) { 3709 /* 25% power */ 3710 if (aor_present == CS_TRUE) { 3711 if (rs_type == 3712 CS_RAIDSET_PERSONALITY_RAID5) { 3713 max_active_luns = 7; 3714 } else if (rs_type == 3715 CS_RAIDSET_PERSONALITY_RAID1){ 3716 max_active_luns = 14; 3717 } else { 3718 /* XXX KDM now what?? */ 3719 } 3720 } else { 3721 if (rs_type == 3722 CS_RAIDSET_PERSONALITY_RAID5) { 3723 max_active_luns = 8; 3724 } else if (rs_type == 3725 CS_RAIDSET_PERSONALITY_RAID1){ 3726 max_active_luns = 16; 3727 } else { 3728 /* XXX KDM now what?? */ 3729 } 3730 } 3731 } else { 3732 /* 50% power */ 3733 /* 3734 * With 50% power in a 64 drive configuration, we 3735 * can power all LUNs we present. 3736 */ 3737 max_active_luns = num_luns; 3738 } 3739 break; 3740 case 112: 3741 if (shelf_50pct_power == CS_FALSE) { 3742 /* 25% power */ 3743 if (aor_present == CS_TRUE) { 3744 if (rs_type == 3745 CS_RAIDSET_PERSONALITY_RAID5) { 3746 max_active_luns = 7; 3747 } else if (rs_type == 3748 CS_RAIDSET_PERSONALITY_RAID1){ 3749 max_active_luns = 14; 3750 } else { 3751 /* XXX KDM now what?? */ 3752 } 3753 } else { 3754 if (rs_type == 3755 CS_RAIDSET_PERSONALITY_RAID5) { 3756 max_active_luns = 8; 3757 } else if (rs_type == 3758 CS_RAIDSET_PERSONALITY_RAID1){ 3759 max_active_luns = 16; 3760 } else { 3761 /* XXX KDM now what?? */ 3762 } 3763 } 3764 } else { 3765 /* 50% power */ 3766 if (aor_present == CS_TRUE) { 3767 if (rs_type == 3768 CS_RAIDSET_PERSONALITY_RAID5) { 3769 max_active_luns = 14; 3770 } else if (rs_type == 3771 CS_RAIDSET_PERSONALITY_RAID1){ 3772 /* 3773 * We're assuming here that disk 3774 * caching is enabled, and so we're 3775 * able to power up half of each 3776 * LUN, and cache all writes. 3777 */ 3778 max_active_luns = num_luns; 3779 } else { 3780 /* XXX KDM now what?? */ 3781 } 3782 } else { 3783 if (rs_type == 3784 CS_RAIDSET_PERSONALITY_RAID5) { 3785 max_active_luns = 15; 3786 } else if (rs_type == 3787 CS_RAIDSET_PERSONALITY_RAID1){ 3788 max_active_luns = 30; 3789 } else { 3790 /* XXX KDM now what?? */ 3791 } 3792 } 3793 } 3794 break; 3795 default: 3796 /* 3797 * In this case, we have an unknown configuration, so we 3798 * just use the default from above. 3799 */ 3800 break; 3801 } 3802 3803 page->max_active_luns = max_active_luns; 3804#if 0 3805 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3806 page->total_luns, page->max_active_luns); 3807#endif 3808} 3809#endif /* NEEDTOPORT */ 3810 3811/* 3812 * This routine could be used in the future to load default and/or saved 3813 * mode page parameters for a particuar lun. 3814 */ 3815static int 3816ctl_init_page_index(struct ctl_lun *lun) 3817{ 3818 int i; 3819 struct ctl_page_index *page_index; 3820 struct ctl_softc *softc; 3821 3822 memcpy(&lun->mode_pages.index, page_index_template, 3823 sizeof(page_index_template)); 3824 3825 softc = lun->ctl_softc; 3826 3827 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 3828 3829 page_index = &lun->mode_pages.index[i]; 3830 /* 3831 * If this is a disk-only mode page, there's no point in 3832 * setting it up. For some pages, we have to have some 3833 * basic information about the disk in order to calculate the 3834 * mode page data. 3835 */ 3836 if ((lun->be_lun->lun_type != T_DIRECT) 3837 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 3838 continue; 3839 3840 switch (page_index->page_code & SMPH_PC_MASK) { 3841 case SMS_FORMAT_DEVICE_PAGE: { 3842 struct scsi_format_page *format_page; 3843 3844 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3845 panic("subpage is incorrect!"); 3846 3847 /* 3848 * Sectors per track are set above. Bytes per 3849 * sector need to be set here on a per-LUN basis. 3850 */ 3851 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 3852 &format_page_default, 3853 sizeof(format_page_default)); 3854 memcpy(&lun->mode_pages.format_page[ 3855 CTL_PAGE_CHANGEABLE], &format_page_changeable, 3856 sizeof(format_page_changeable)); 3857 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 3858 &format_page_default, 3859 sizeof(format_page_default)); 3860 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 3861 &format_page_default, 3862 sizeof(format_page_default)); 3863 3864 format_page = &lun->mode_pages.format_page[ 3865 CTL_PAGE_CURRENT]; 3866 scsi_ulto2b(lun->be_lun->blocksize, 3867 format_page->bytes_per_sector); 3868 3869 format_page = &lun->mode_pages.format_page[ 3870 CTL_PAGE_DEFAULT]; 3871 scsi_ulto2b(lun->be_lun->blocksize, 3872 format_page->bytes_per_sector); 3873 3874 format_page = &lun->mode_pages.format_page[ 3875 CTL_PAGE_SAVED]; 3876 scsi_ulto2b(lun->be_lun->blocksize, 3877 format_page->bytes_per_sector); 3878 3879 page_index->page_data = 3880 (uint8_t *)lun->mode_pages.format_page; 3881 break; 3882 } 3883 case SMS_RIGID_DISK_PAGE: { 3884 struct scsi_rigid_disk_page *rigid_disk_page; 3885 uint32_t sectors_per_cylinder; 3886 uint64_t cylinders; 3887#ifndef __XSCALE__ 3888 int shift; 3889#endif /* !__XSCALE__ */ 3890 3891 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3892 panic("invalid subpage value %d", 3893 page_index->subpage); 3894 3895 /* 3896 * Rotation rate and sectors per track are set 3897 * above. We calculate the cylinders here based on 3898 * capacity. Due to the number of heads and 3899 * sectors per track we're using, smaller arrays 3900 * may turn out to have 0 cylinders. Linux and 3901 * FreeBSD don't pay attention to these mode pages 3902 * to figure out capacity, but Solaris does. It 3903 * seems to deal with 0 cylinders just fine, and 3904 * works out a fake geometry based on the capacity. 3905 */ 3906 memcpy(&lun->mode_pages.rigid_disk_page[ 3907 CTL_PAGE_CURRENT], &rigid_disk_page_default, 3908 sizeof(rigid_disk_page_default)); 3909 memcpy(&lun->mode_pages.rigid_disk_page[ 3910 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 3911 sizeof(rigid_disk_page_changeable)); 3912 memcpy(&lun->mode_pages.rigid_disk_page[ 3913 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 3914 sizeof(rigid_disk_page_default)); 3915 memcpy(&lun->mode_pages.rigid_disk_page[ 3916 CTL_PAGE_SAVED], &rigid_disk_page_default, 3917 sizeof(rigid_disk_page_default)); 3918 3919 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 3920 CTL_DEFAULT_HEADS; 3921 3922 /* 3923 * The divide method here will be more accurate, 3924 * probably, but results in floating point being 3925 * used in the kernel on i386 (__udivdi3()). On the 3926 * XScale, though, __udivdi3() is implemented in 3927 * software. 3928 * 3929 * The shift method for cylinder calculation is 3930 * accurate if sectors_per_cylinder is a power of 3931 * 2. Otherwise it might be slightly off -- you 3932 * might have a bit of a truncation problem. 3933 */ 3934#ifdef __XSCALE__ 3935 cylinders = (lun->be_lun->maxlba + 1) / 3936 sectors_per_cylinder; 3937#else 3938 for (shift = 31; shift > 0; shift--) { 3939 if (sectors_per_cylinder & (1 << shift)) 3940 break; 3941 } 3942 cylinders = (lun->be_lun->maxlba + 1) >> shift; 3943#endif 3944 3945 /* 3946 * We've basically got 3 bytes, or 24 bits for the 3947 * cylinder size in the mode page. If we're over, 3948 * just round down to 2^24. 3949 */ 3950 if (cylinders > 0xffffff) 3951 cylinders = 0xffffff; 3952 3953 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3954 CTL_PAGE_CURRENT]; 3955 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3956 3957 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3958 CTL_PAGE_DEFAULT]; 3959 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3960 3961 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 3962 CTL_PAGE_SAVED]; 3963 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 3964 3965 page_index->page_data = 3966 (uint8_t *)lun->mode_pages.rigid_disk_page; 3967 break; 3968 } 3969 case SMS_CACHING_PAGE: { 3970 3971 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3972 panic("invalid subpage value %d", 3973 page_index->subpage); 3974 /* 3975 * Defaults should be okay here, no calculations 3976 * needed. 3977 */ 3978 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 3979 &caching_page_default, 3980 sizeof(caching_page_default)); 3981 memcpy(&lun->mode_pages.caching_page[ 3982 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 3983 sizeof(caching_page_changeable)); 3984 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 3985 &caching_page_default, 3986 sizeof(caching_page_default)); 3987 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 3988 &caching_page_default, 3989 sizeof(caching_page_default)); 3990 page_index->page_data = 3991 (uint8_t *)lun->mode_pages.caching_page; 3992 break; 3993 } 3994 case SMS_CONTROL_MODE_PAGE: { 3995 3996 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 3997 panic("invalid subpage value %d", 3998 page_index->subpage); 3999 4000 /* 4001 * Defaults should be okay here, no calculations 4002 * needed. 4003 */ 4004 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4005 &control_page_default, 4006 sizeof(control_page_default)); 4007 memcpy(&lun->mode_pages.control_page[ 4008 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4009 sizeof(control_page_changeable)); 4010 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4011 &control_page_default, 4012 sizeof(control_page_default)); 4013 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4014 &control_page_default, 4015 sizeof(control_page_default)); 4016 page_index->page_data = 4017 (uint8_t *)lun->mode_pages.control_page; 4018 break; 4019 4020 } 4021 case SMS_VENDOR_SPECIFIC_PAGE:{ 4022 switch (page_index->subpage) { 4023 case PWR_SUBPAGE_CODE: { 4024 struct copan_power_subpage *current_page, 4025 *saved_page; 4026 4027 memcpy(&lun->mode_pages.power_subpage[ 4028 CTL_PAGE_CURRENT], 4029 &power_page_default, 4030 sizeof(power_page_default)); 4031 memcpy(&lun->mode_pages.power_subpage[ 4032 CTL_PAGE_CHANGEABLE], 4033 &power_page_changeable, 4034 sizeof(power_page_changeable)); 4035 memcpy(&lun->mode_pages.power_subpage[ 4036 CTL_PAGE_DEFAULT], 4037 &power_page_default, 4038 sizeof(power_page_default)); 4039 memcpy(&lun->mode_pages.power_subpage[ 4040 CTL_PAGE_SAVED], 4041 &power_page_default, 4042 sizeof(power_page_default)); 4043 page_index->page_data = 4044 (uint8_t *)lun->mode_pages.power_subpage; 4045 4046 current_page = (struct copan_power_subpage *) 4047 (page_index->page_data + 4048 (page_index->page_len * 4049 CTL_PAGE_CURRENT)); 4050 saved_page = (struct copan_power_subpage *) 4051 (page_index->page_data + 4052 (page_index->page_len * 4053 CTL_PAGE_SAVED)); 4054 break; 4055 } 4056 case APS_SUBPAGE_CODE: { 4057 struct copan_aps_subpage *current_page, 4058 *saved_page; 4059 4060 // This gets set multiple times but 4061 // it should always be the same. It's 4062 // only done during init so who cares. 4063 index_to_aps_page = i; 4064 4065 memcpy(&lun->mode_pages.aps_subpage[ 4066 CTL_PAGE_CURRENT], 4067 &aps_page_default, 4068 sizeof(aps_page_default)); 4069 memcpy(&lun->mode_pages.aps_subpage[ 4070 CTL_PAGE_CHANGEABLE], 4071 &aps_page_changeable, 4072 sizeof(aps_page_changeable)); 4073 memcpy(&lun->mode_pages.aps_subpage[ 4074 CTL_PAGE_DEFAULT], 4075 &aps_page_default, 4076 sizeof(aps_page_default)); 4077 memcpy(&lun->mode_pages.aps_subpage[ 4078 CTL_PAGE_SAVED], 4079 &aps_page_default, 4080 sizeof(aps_page_default)); 4081 page_index->page_data = 4082 (uint8_t *)lun->mode_pages.aps_subpage; 4083 4084 current_page = (struct copan_aps_subpage *) 4085 (page_index->page_data + 4086 (page_index->page_len * 4087 CTL_PAGE_CURRENT)); 4088 saved_page = (struct copan_aps_subpage *) 4089 (page_index->page_data + 4090 (page_index->page_len * 4091 CTL_PAGE_SAVED)); 4092 break; 4093 } 4094 case DBGCNF_SUBPAGE_CODE: { 4095 struct copan_debugconf_subpage *current_page, 4096 *saved_page; 4097 4098 memcpy(&lun->mode_pages.debugconf_subpage[ 4099 CTL_PAGE_CURRENT], 4100 &debugconf_page_default, 4101 sizeof(debugconf_page_default)); 4102 memcpy(&lun->mode_pages.debugconf_subpage[ 4103 CTL_PAGE_CHANGEABLE], 4104 &debugconf_page_changeable, 4105 sizeof(debugconf_page_changeable)); 4106 memcpy(&lun->mode_pages.debugconf_subpage[ 4107 CTL_PAGE_DEFAULT], 4108 &debugconf_page_default, 4109 sizeof(debugconf_page_default)); 4110 memcpy(&lun->mode_pages.debugconf_subpage[ 4111 CTL_PAGE_SAVED], 4112 &debugconf_page_default, 4113 sizeof(debugconf_page_default)); 4114 page_index->page_data = 4115 (uint8_t *)lun->mode_pages.debugconf_subpage; 4116 4117 current_page = (struct copan_debugconf_subpage *) 4118 (page_index->page_data + 4119 (page_index->page_len * 4120 CTL_PAGE_CURRENT)); 4121 saved_page = (struct copan_debugconf_subpage *) 4122 (page_index->page_data + 4123 (page_index->page_len * 4124 CTL_PAGE_SAVED)); 4125 break; 4126 } 4127 default: 4128 panic("invalid subpage value %d", 4129 page_index->subpage); 4130 break; 4131 } 4132 break; 4133 } 4134 default: 4135 panic("invalid page value %d", 4136 page_index->page_code & SMPH_PC_MASK); 4137 break; 4138 } 4139 } 4140 4141 return (CTL_RETVAL_COMPLETE); 4142} 4143 4144/* 4145 * LUN allocation. 4146 * 4147 * Requirements: 4148 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4149 * wants us to allocate the LUN and he can block. 4150 * - ctl_softc is always set 4151 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4152 * 4153 * Returns 0 for success, non-zero (errno) for failure. 4154 */ 4155static int 4156ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4157 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4158{ 4159 struct ctl_lun *nlun, *lun; 4160 struct ctl_frontend *fe; 4161 int lun_number, i, lun_malloced; 4162 4163 if (be_lun == NULL) 4164 return (EINVAL); 4165 4166 /* 4167 * We currently only support Direct Access or Processor LUN types. 4168 */ 4169 switch (be_lun->lun_type) { 4170 case T_DIRECT: 4171 break; 4172 case T_PROCESSOR: 4173 break; 4174 case T_SEQUENTIAL: 4175 case T_CHANGER: 4176 default: 4177 be_lun->lun_config_status(be_lun->be_lun, 4178 CTL_LUN_CONFIG_FAILURE); 4179 break; 4180 } 4181 if (ctl_lun == NULL) { 4182 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4183 lun_malloced = 1; 4184 } else { 4185 lun_malloced = 0; 4186 lun = ctl_lun; 4187 } 4188 4189 memset(lun, 0, sizeof(*lun)); 4190 if (lun_malloced) 4191 lun->flags = CTL_LUN_MALLOCED; 4192 4193 mtx_lock(&ctl_softc->ctl_lock); 4194 /* 4195 * See if the caller requested a particular LUN number. If so, see 4196 * if it is available. Otherwise, allocate the first available LUN. 4197 */ 4198 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4199 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4200 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4201 mtx_unlock(&ctl_softc->ctl_lock); 4202 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4203 printf("ctl: requested LUN ID %d is higher " 4204 "than CTL_MAX_LUNS - 1 (%d)\n", 4205 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4206 } else { 4207 /* 4208 * XXX KDM return an error, or just assign 4209 * another LUN ID in this case?? 4210 */ 4211 printf("ctl: requested LUN ID %d is already " 4212 "in use\n", be_lun->req_lun_id); 4213 } 4214 if (lun->flags & CTL_LUN_MALLOCED) 4215 free(lun, M_CTL); 4216 be_lun->lun_config_status(be_lun->be_lun, 4217 CTL_LUN_CONFIG_FAILURE); 4218 return (ENOSPC); 4219 } 4220 lun_number = be_lun->req_lun_id; 4221 } else { 4222 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4223 if (lun_number == -1) { 4224 mtx_unlock(&ctl_softc->ctl_lock); 4225 printf("ctl: can't allocate LUN on target %ju, out of " 4226 "LUNs\n", (uintmax_t)target_id.id); 4227 if (lun->flags & CTL_LUN_MALLOCED) 4228 free(lun, M_CTL); 4229 be_lun->lun_config_status(be_lun->be_lun, 4230 CTL_LUN_CONFIG_FAILURE); 4231 return (ENOSPC); 4232 } 4233 } 4234 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4235 4236 mtx_init(&lun->lun_lock, "CTL LUN", NULL, MTX_DEF); 4237 lun->target = target_id; 4238 lun->lun = lun_number; 4239 lun->be_lun = be_lun; 4240 /* 4241 * The processor LUN is always enabled. Disk LUNs come on line 4242 * disabled, and must be enabled by the backend. 4243 */ 4244 lun->flags |= CTL_LUN_DISABLED; 4245 lun->backend = be_lun->be; 4246 be_lun->ctl_lun = lun; 4247 be_lun->lun_id = lun_number; 4248 atomic_add_int(&be_lun->be->num_luns, 1); 4249 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4250 lun->flags |= CTL_LUN_STOPPED; 4251 4252 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4253 lun->flags |= CTL_LUN_INOPERABLE; 4254 4255 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4256 lun->flags |= CTL_LUN_PRIMARY_SC; 4257 4258 lun->ctl_softc = ctl_softc; 4259 TAILQ_INIT(&lun->ooa_queue); 4260 TAILQ_INIT(&lun->blocked_queue); 4261 STAILQ_INIT(&lun->error_list); 4262 4263 /* 4264 * Initialize the mode page index. 4265 */ 4266 ctl_init_page_index(lun); 4267 4268 /* 4269 * Set the poweron UA for all initiators on this LUN only. 4270 */ 4271 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4272 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4273 4274 /* 4275 * Now, before we insert this lun on the lun list, set the lun 4276 * inventory changed UA for all other luns. 4277 */ 4278 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4279 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4280 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4281 } 4282 } 4283 4284 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4285 4286 ctl_softc->ctl_luns[lun_number] = lun; 4287 4288 ctl_softc->num_luns++; 4289 4290 /* Setup statistics gathering */ 4291 lun->stats.device_type = be_lun->lun_type; 4292 lun->stats.lun_number = lun_number; 4293 if (lun->stats.device_type == T_DIRECT) 4294 lun->stats.blocksize = be_lun->blocksize; 4295 else 4296 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4297 for (i = 0;i < CTL_MAX_PORTS;i++) 4298 lun->stats.ports[i].targ_port = i; 4299 4300 mtx_unlock(&ctl_softc->ctl_lock); 4301 4302 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4303 4304 /* 4305 * Run through each registered FETD and bring it online if it isn't 4306 * already. Enable the target ID if it hasn't been enabled, and 4307 * enable this particular LUN. 4308 */ 4309 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4310 int retval; 4311 4312 /* 4313 * XXX KDM this only works for ONE TARGET ID. We'll need 4314 * to do things differently if we go to a multiple target 4315 * ID scheme. 4316 */ 4317 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) == 0) { 4318 4319 retval = fe->targ_enable(fe->targ_lun_arg, target_id); 4320 if (retval != 0) { 4321 printf("ctl_alloc_lun: FETD %s port %d " 4322 "returned error %d for targ_enable on " 4323 "target %ju\n", fe->port_name, 4324 fe->targ_port, retval, 4325 (uintmax_t)target_id.id); 4326 } else 4327 fe->status |= CTL_PORT_STATUS_TARG_ONLINE; 4328 } 4329 4330 retval = fe->lun_enable(fe->targ_lun_arg, target_id,lun_number); 4331 if (retval != 0) { 4332 printf("ctl_alloc_lun: FETD %s port %d returned error " 4333 "%d for lun_enable on target %ju lun %d\n", 4334 fe->port_name, fe->targ_port, retval, 4335 (uintmax_t)target_id.id, lun_number); 4336 } else 4337 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4338 } 4339 return (0); 4340} 4341 4342/* 4343 * Delete a LUN. 4344 * Assumptions: 4345 * - LUN has already been marked invalid and any pending I/O has been taken 4346 * care of. 4347 */ 4348static int 4349ctl_free_lun(struct ctl_lun *lun) 4350{ 4351 struct ctl_softc *softc; 4352#if 0 4353 struct ctl_frontend *fe; 4354#endif 4355 struct ctl_lun *nlun; 4356 int i; 4357 4358 softc = lun->ctl_softc; 4359 4360 mtx_assert(&softc->ctl_lock, MA_OWNED); 4361 4362 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4363 4364 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4365 4366 softc->ctl_luns[lun->lun] = NULL; 4367 4368 if (!TAILQ_EMPTY(&lun->ooa_queue)) 4369 panic("Freeing a LUN %p with outstanding I/O!!\n", lun); 4370 4371 softc->num_luns--; 4372 4373 /* 4374 * XXX KDM this scheme only works for a single target/multiple LUN 4375 * setup. It needs to be revamped for a multiple target scheme. 4376 * 4377 * XXX KDM this results in fe->lun_disable() getting called twice, 4378 * once when ctl_disable_lun() is called, and a second time here. 4379 * We really need to re-think the LUN disable semantics. There 4380 * should probably be several steps/levels to LUN removal: 4381 * - disable 4382 * - invalidate 4383 * - free 4384 * 4385 * Right now we only have a disable method when communicating to 4386 * the front end ports, at least for individual LUNs. 4387 */ 4388#if 0 4389 STAILQ_FOREACH(fe, &softc->fe_list, links) { 4390 int retval; 4391 4392 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4393 lun->lun); 4394 if (retval != 0) { 4395 printf("ctl_free_lun: FETD %s port %d returned error " 4396 "%d for lun_disable on target %ju lun %jd\n", 4397 fe->port_name, fe->targ_port, retval, 4398 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4399 } 4400 4401 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4402 fe->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4403 4404 retval = fe->targ_disable(fe->targ_lun_arg,lun->target); 4405 if (retval != 0) { 4406 printf("ctl_free_lun: FETD %s port %d " 4407 "returned error %d for targ_disable on " 4408 "target %ju\n", fe->port_name, 4409 fe->targ_port, retval, 4410 (uintmax_t)lun->target.id); 4411 } else 4412 fe->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4413 4414 if ((fe->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4415 continue; 4416 4417#if 0 4418 fe->port_offline(fe->onoff_arg); 4419 fe->status &= ~CTL_PORT_STATUS_ONLINE; 4420#endif 4421 } 4422 } 4423#endif 4424 4425 /* 4426 * Tell the backend to free resources, if this LUN has a backend. 4427 */ 4428 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4429 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4430 4431 mtx_destroy(&lun->lun_lock); 4432 if (lun->flags & CTL_LUN_MALLOCED) 4433 free(lun, M_CTL); 4434 4435 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4436 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4437 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4438 } 4439 } 4440 4441 return (0); 4442} 4443 4444static void 4445ctl_create_lun(struct ctl_be_lun *be_lun) 4446{ 4447 struct ctl_softc *ctl_softc; 4448 4449 ctl_softc = control_softc; 4450 4451 /* 4452 * ctl_alloc_lun() should handle all potential failure cases. 4453 */ 4454 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4455} 4456 4457int 4458ctl_add_lun(struct ctl_be_lun *be_lun) 4459{ 4460 struct ctl_softc *ctl_softc = control_softc; 4461 4462 mtx_lock(&ctl_softc->ctl_lock); 4463 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4464 mtx_unlock(&ctl_softc->ctl_lock); 4465 wakeup(&ctl_softc->pending_lun_queue); 4466 4467 return (0); 4468} 4469 4470int 4471ctl_enable_lun(struct ctl_be_lun *be_lun) 4472{ 4473 struct ctl_softc *ctl_softc; 4474 struct ctl_frontend *fe, *nfe; 4475 struct ctl_lun *lun; 4476 int retval; 4477 4478 ctl_softc = control_softc; 4479 4480 lun = (struct ctl_lun *)be_lun->ctl_lun; 4481 4482 mtx_lock(&ctl_softc->ctl_lock); 4483 mtx_lock(&lun->lun_lock); 4484 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4485 /* 4486 * eh? Why did we get called if the LUN is already 4487 * enabled? 4488 */ 4489 mtx_unlock(&lun->lun_lock); 4490 mtx_unlock(&ctl_softc->ctl_lock); 4491 return (0); 4492 } 4493 lun->flags &= ~CTL_LUN_DISABLED; 4494 mtx_unlock(&lun->lun_lock); 4495 4496 for (fe = STAILQ_FIRST(&ctl_softc->fe_list); fe != NULL; fe = nfe) { 4497 nfe = STAILQ_NEXT(fe, links); 4498 4499 /* 4500 * Drop the lock while we call the FETD's enable routine. 4501 * This can lead to a callback into CTL (at least in the 4502 * case of the internal initiator frontend. 4503 */ 4504 mtx_unlock(&ctl_softc->ctl_lock); 4505 retval = fe->lun_enable(fe->targ_lun_arg, lun->target,lun->lun); 4506 mtx_lock(&ctl_softc->ctl_lock); 4507 if (retval != 0) { 4508 printf("%s: FETD %s port %d returned error " 4509 "%d for lun_enable on target %ju lun %jd\n", 4510 __func__, fe->port_name, fe->targ_port, retval, 4511 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4512 } 4513#if 0 4514 else { 4515 /* NOTE: TODO: why does lun enable affect port status? */ 4516 fe->status |= CTL_PORT_STATUS_LUN_ONLINE; 4517 } 4518#endif 4519 } 4520 4521 mtx_unlock(&ctl_softc->ctl_lock); 4522 4523 return (0); 4524} 4525 4526int 4527ctl_disable_lun(struct ctl_be_lun *be_lun) 4528{ 4529 struct ctl_softc *ctl_softc; 4530 struct ctl_frontend *fe; 4531 struct ctl_lun *lun; 4532 int retval; 4533 4534 ctl_softc = control_softc; 4535 4536 lun = (struct ctl_lun *)be_lun->ctl_lun; 4537 4538 mtx_lock(&ctl_softc->ctl_lock); 4539 mtx_lock(&lun->lun_lock); 4540 if (lun->flags & CTL_LUN_DISABLED) { 4541 mtx_unlock(&lun->lun_lock); 4542 mtx_unlock(&ctl_softc->ctl_lock); 4543 return (0); 4544 } 4545 lun->flags |= CTL_LUN_DISABLED; 4546 mtx_unlock(&lun->lun_lock); 4547 4548 STAILQ_FOREACH(fe, &ctl_softc->fe_list, links) { 4549 mtx_unlock(&ctl_softc->ctl_lock); 4550 /* 4551 * Drop the lock before we call the frontend's disable 4552 * routine, to avoid lock order reversals. 4553 * 4554 * XXX KDM what happens if the frontend list changes while 4555 * we're traversing it? It's unlikely, but should be handled. 4556 */ 4557 retval = fe->lun_disable(fe->targ_lun_arg, lun->target, 4558 lun->lun); 4559 mtx_lock(&ctl_softc->ctl_lock); 4560 if (retval != 0) { 4561 printf("ctl_alloc_lun: FETD %s port %d returned error " 4562 "%d for lun_disable on target %ju lun %jd\n", 4563 fe->port_name, fe->targ_port, retval, 4564 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4565 } 4566 } 4567 4568 mtx_unlock(&ctl_softc->ctl_lock); 4569 4570 return (0); 4571} 4572 4573int 4574ctl_start_lun(struct ctl_be_lun *be_lun) 4575{ 4576 struct ctl_softc *ctl_softc; 4577 struct ctl_lun *lun; 4578 4579 ctl_softc = control_softc; 4580 4581 lun = (struct ctl_lun *)be_lun->ctl_lun; 4582 4583 mtx_lock(&lun->lun_lock); 4584 lun->flags &= ~CTL_LUN_STOPPED; 4585 mtx_unlock(&lun->lun_lock); 4586 4587 return (0); 4588} 4589 4590int 4591ctl_stop_lun(struct ctl_be_lun *be_lun) 4592{ 4593 struct ctl_softc *ctl_softc; 4594 struct ctl_lun *lun; 4595 4596 ctl_softc = control_softc; 4597 4598 lun = (struct ctl_lun *)be_lun->ctl_lun; 4599 4600 mtx_lock(&lun->lun_lock); 4601 lun->flags |= CTL_LUN_STOPPED; 4602 mtx_unlock(&lun->lun_lock); 4603 4604 return (0); 4605} 4606 4607int 4608ctl_lun_offline(struct ctl_be_lun *be_lun) 4609{ 4610 struct ctl_softc *ctl_softc; 4611 struct ctl_lun *lun; 4612 4613 ctl_softc = control_softc; 4614 4615 lun = (struct ctl_lun *)be_lun->ctl_lun; 4616 4617 mtx_lock(&lun->lun_lock); 4618 lun->flags |= CTL_LUN_OFFLINE; 4619 mtx_unlock(&lun->lun_lock); 4620 4621 return (0); 4622} 4623 4624int 4625ctl_lun_online(struct ctl_be_lun *be_lun) 4626{ 4627 struct ctl_softc *ctl_softc; 4628 struct ctl_lun *lun; 4629 4630 ctl_softc = control_softc; 4631 4632 lun = (struct ctl_lun *)be_lun->ctl_lun; 4633 4634 mtx_lock(&lun->lun_lock); 4635 lun->flags &= ~CTL_LUN_OFFLINE; 4636 mtx_unlock(&lun->lun_lock); 4637 4638 return (0); 4639} 4640 4641int 4642ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4643{ 4644 struct ctl_softc *ctl_softc; 4645 struct ctl_lun *lun; 4646 4647 ctl_softc = control_softc; 4648 4649 lun = (struct ctl_lun *)be_lun->ctl_lun; 4650 4651 mtx_lock(&lun->lun_lock); 4652 4653 /* 4654 * The LUN needs to be disabled before it can be marked invalid. 4655 */ 4656 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4657 mtx_unlock(&lun->lun_lock); 4658 return (-1); 4659 } 4660 /* 4661 * Mark the LUN invalid. 4662 */ 4663 lun->flags |= CTL_LUN_INVALID; 4664 4665 /* 4666 * If there is nothing in the OOA queue, go ahead and free the LUN. 4667 * If we have something in the OOA queue, we'll free it when the 4668 * last I/O completes. 4669 */ 4670 if (TAILQ_EMPTY(&lun->ooa_queue)) { 4671 mtx_unlock(&lun->lun_lock); 4672 mtx_lock(&ctl_softc->ctl_lock); 4673 ctl_free_lun(lun); 4674 mtx_unlock(&ctl_softc->ctl_lock); 4675 } else 4676 mtx_unlock(&lun->lun_lock); 4677 4678 return (0); 4679} 4680 4681int 4682ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4683{ 4684 struct ctl_softc *ctl_softc; 4685 struct ctl_lun *lun; 4686 4687 ctl_softc = control_softc; 4688 lun = (struct ctl_lun *)be_lun->ctl_lun; 4689 4690 mtx_lock(&lun->lun_lock); 4691 lun->flags |= CTL_LUN_INOPERABLE; 4692 mtx_unlock(&lun->lun_lock); 4693 4694 return (0); 4695} 4696 4697int 4698ctl_lun_operable(struct ctl_be_lun *be_lun) 4699{ 4700 struct ctl_softc *ctl_softc; 4701 struct ctl_lun *lun; 4702 4703 ctl_softc = control_softc; 4704 lun = (struct ctl_lun *)be_lun->ctl_lun; 4705 4706 mtx_lock(&lun->lun_lock); 4707 lun->flags &= ~CTL_LUN_INOPERABLE; 4708 mtx_unlock(&lun->lun_lock); 4709 4710 return (0); 4711} 4712 4713int 4714ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4715 int lock) 4716{ 4717 struct ctl_softc *softc; 4718 struct ctl_lun *lun; 4719 struct copan_aps_subpage *current_sp; 4720 struct ctl_page_index *page_index; 4721 int i; 4722 4723 softc = control_softc; 4724 4725 mtx_lock(&softc->ctl_lock); 4726 4727 lun = (struct ctl_lun *)be_lun->ctl_lun; 4728 mtx_lock(&lun->lun_lock); 4729 4730 page_index = NULL; 4731 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4732 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4733 APS_PAGE_CODE) 4734 continue; 4735 4736 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4737 continue; 4738 page_index = &lun->mode_pages.index[i]; 4739 } 4740 4741 if (page_index == NULL) { 4742 mtx_unlock(&lun->lun_lock); 4743 mtx_unlock(&softc->ctl_lock); 4744 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4745 (uintmax_t)lun->lun); 4746 return (1); 4747 } 4748#if 0 4749 if ((softc->aps_locked_lun != 0) 4750 && (softc->aps_locked_lun != lun->lun)) { 4751 printf("%s: attempt to lock LUN %llu when %llu is already " 4752 "locked\n"); 4753 mtx_unlock(&lun->lun_lock); 4754 mtx_unlock(&softc->ctl_lock); 4755 return (1); 4756 } 4757#endif 4758 4759 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4760 (page_index->page_len * CTL_PAGE_CURRENT)); 4761 4762 if (lock != 0) { 4763 current_sp->lock_active = APS_LOCK_ACTIVE; 4764 softc->aps_locked_lun = lun->lun; 4765 } else { 4766 current_sp->lock_active = 0; 4767 softc->aps_locked_lun = 0; 4768 } 4769 4770 4771 /* 4772 * If we're in HA mode, try to send the lock message to the other 4773 * side. 4774 */ 4775 if (ctl_is_single == 0) { 4776 int isc_retval; 4777 union ctl_ha_msg lock_msg; 4778 4779 lock_msg.hdr.nexus = *nexus; 4780 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4781 if (lock != 0) 4782 lock_msg.aps.lock_flag = 1; 4783 else 4784 lock_msg.aps.lock_flag = 0; 4785 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4786 sizeof(lock_msg), 0); 4787 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4788 printf("%s: APS (lock=%d) error returned from " 4789 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4790 mtx_unlock(&lun->lun_lock); 4791 mtx_unlock(&softc->ctl_lock); 4792 return (1); 4793 } 4794 } 4795 4796 mtx_unlock(&lun->lun_lock); 4797 mtx_unlock(&softc->ctl_lock); 4798 4799 return (0); 4800} 4801 4802void 4803ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 4804{ 4805 struct ctl_lun *lun; 4806 struct ctl_softc *softc; 4807 int i; 4808 4809 softc = control_softc; 4810 4811 lun = (struct ctl_lun *)be_lun->ctl_lun; 4812 4813 mtx_lock(&lun->lun_lock); 4814 4815 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4816 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 4817 4818 mtx_unlock(&lun->lun_lock); 4819} 4820 4821/* 4822 * Backend "memory move is complete" callback for requests that never 4823 * make it down to say RAIDCore's configuration code. 4824 */ 4825int 4826ctl_config_move_done(union ctl_io *io) 4827{ 4828 int retval; 4829 4830 retval = CTL_RETVAL_COMPLETE; 4831 4832 4833 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 4834 /* 4835 * XXX KDM this shouldn't happen, but what if it does? 4836 */ 4837 if (io->io_hdr.io_type != CTL_IO_SCSI) 4838 panic("I/O type isn't CTL_IO_SCSI!"); 4839 4840 if ((io->io_hdr.port_status == 0) 4841 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4842 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 4843 io->io_hdr.status = CTL_SUCCESS; 4844 else if ((io->io_hdr.port_status != 0) 4845 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 4846 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 4847 /* 4848 * For hardware error sense keys, the sense key 4849 * specific value is defined to be a retry count, 4850 * but we use it to pass back an internal FETD 4851 * error code. XXX KDM Hopefully the FETD is only 4852 * using 16 bits for an error code, since that's 4853 * all the space we have in the sks field. 4854 */ 4855 ctl_set_internal_failure(&io->scsiio, 4856 /*sks_valid*/ 1, 4857 /*retry_count*/ 4858 io->io_hdr.port_status); 4859 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 4860 free(io->scsiio.kern_data_ptr, M_CTL); 4861 ctl_done(io); 4862 goto bailout; 4863 } 4864 4865 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 4866 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 4867 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 4868 /* 4869 * XXX KDM just assuming a single pointer here, and not a 4870 * S/G list. If we start using S/G lists for config data, 4871 * we'll need to know how to clean them up here as well. 4872 */ 4873 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 4874 free(io->scsiio.kern_data_ptr, M_CTL); 4875 /* Hopefully the user has already set the status... */ 4876 ctl_done(io); 4877 } else { 4878 /* 4879 * XXX KDM now we need to continue data movement. Some 4880 * options: 4881 * - call ctl_scsiio() again? We don't do this for data 4882 * writes, because for those at least we know ahead of 4883 * time where the write will go and how long it is. For 4884 * config writes, though, that information is largely 4885 * contained within the write itself, thus we need to 4886 * parse out the data again. 4887 * 4888 * - Call some other function once the data is in? 4889 */ 4890 4891 /* 4892 * XXX KDM call ctl_scsiio() again for now, and check flag 4893 * bits to see whether we're allocated or not. 4894 */ 4895 retval = ctl_scsiio(&io->scsiio); 4896 } 4897bailout: 4898 return (retval); 4899} 4900 4901/* 4902 * This gets called by a backend driver when it is done with a 4903 * data_submit method. 4904 */ 4905void 4906ctl_data_submit_done(union ctl_io *io) 4907{ 4908 /* 4909 * If the IO_CONT flag is set, we need to call the supplied 4910 * function to continue processing the I/O, instead of completing 4911 * the I/O just yet. 4912 * 4913 * If there is an error, though, we don't want to keep processing. 4914 * Instead, just send status back to the initiator. 4915 */ 4916 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) && 4917 (io->io_hdr.flags & CTL_FLAG_ABORT) == 0 && 4918 ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 4919 (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 4920 io->scsiio.io_cont(io); 4921 return; 4922 } 4923 ctl_done(io); 4924} 4925 4926/* 4927 * This gets called by a backend driver when it is done with a 4928 * configuration write. 4929 */ 4930void 4931ctl_config_write_done(union ctl_io *io) 4932{ 4933 /* 4934 * If the IO_CONT flag is set, we need to call the supplied 4935 * function to continue processing the I/O, instead of completing 4936 * the I/O just yet. 4937 * 4938 * If there is an error, though, we don't want to keep processing. 4939 * Instead, just send status back to the initiator. 4940 */ 4941 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 4942 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 4943 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 4944 io->scsiio.io_cont(io); 4945 return; 4946 } 4947 /* 4948 * Since a configuration write can be done for commands that actually 4949 * have data allocated, like write buffer, and commands that have 4950 * no data, like start/stop unit, we need to check here. 4951 */ 4952 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 4953 free(io->scsiio.kern_data_ptr, M_CTL); 4954 ctl_done(io); 4955} 4956 4957/* 4958 * SCSI release command. 4959 */ 4960int 4961ctl_scsi_release(struct ctl_scsiio *ctsio) 4962{ 4963 int length, longid, thirdparty_id, resv_id; 4964 struct ctl_softc *ctl_softc; 4965 struct ctl_lun *lun; 4966 4967 length = 0; 4968 resv_id = 0; 4969 4970 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 4971 4972 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 4973 ctl_softc = control_softc; 4974 4975 switch (ctsio->cdb[0]) { 4976 case RELEASE: { 4977 struct scsi_release *cdb; 4978 4979 cdb = (struct scsi_release *)ctsio->cdb; 4980 if ((cdb->byte2 & 0x1f) != 0) { 4981 ctl_set_invalid_field(ctsio, 4982 /*sks_valid*/ 1, 4983 /*command*/ 1, 4984 /*field*/ 1, 4985 /*bit_valid*/ 0, 4986 /*bit*/ 0); 4987 ctl_done((union ctl_io *)ctsio); 4988 return (CTL_RETVAL_COMPLETE); 4989 } 4990 break; 4991 } 4992 case RELEASE_10: { 4993 struct scsi_release_10 *cdb; 4994 4995 cdb = (struct scsi_release_10 *)ctsio->cdb; 4996 4997 if ((cdb->byte2 & SR10_EXTENT) != 0) { 4998 ctl_set_invalid_field(ctsio, 4999 /*sks_valid*/ 1, 5000 /*command*/ 1, 5001 /*field*/ 1, 5002 /*bit_valid*/ 1, 5003 /*bit*/ 0); 5004 ctl_done((union ctl_io *)ctsio); 5005 return (CTL_RETVAL_COMPLETE); 5006 5007 } 5008 5009 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5010 ctl_set_invalid_field(ctsio, 5011 /*sks_valid*/ 1, 5012 /*command*/ 1, 5013 /*field*/ 1, 5014 /*bit_valid*/ 1, 5015 /*bit*/ 4); 5016 ctl_done((union ctl_io *)ctsio); 5017 return (CTL_RETVAL_COMPLETE); 5018 } 5019 5020 if (cdb->byte2 & SR10_LONGID) 5021 longid = 1; 5022 else 5023 thirdparty_id = cdb->thirdparty_id; 5024 5025 resv_id = cdb->resv_id; 5026 length = scsi_2btoul(cdb->length); 5027 break; 5028 } 5029 } 5030 5031 5032 /* 5033 * XXX KDM right now, we only support LUN reservation. We don't 5034 * support 3rd party reservations, or extent reservations, which 5035 * might actually need the parameter list. If we've gotten this 5036 * far, we've got a LUN reservation. Anything else got kicked out 5037 * above. So, according to SPC, ignore the length. 5038 */ 5039 length = 0; 5040 5041 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5042 && (length > 0)) { 5043 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5044 ctsio->kern_data_len = length; 5045 ctsio->kern_total_len = length; 5046 ctsio->kern_data_resid = 0; 5047 ctsio->kern_rel_offset = 0; 5048 ctsio->kern_sg_entries = 0; 5049 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5050 ctsio->be_move_done = ctl_config_move_done; 5051 ctl_datamove((union ctl_io *)ctsio); 5052 5053 return (CTL_RETVAL_COMPLETE); 5054 } 5055 5056 if (length > 0) 5057 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5058 5059 mtx_lock(&lun->lun_lock); 5060 5061 /* 5062 * According to SPC, it is not an error for an intiator to attempt 5063 * to release a reservation on a LUN that isn't reserved, or that 5064 * is reserved by another initiator. The reservation can only be 5065 * released, though, by the initiator who made it or by one of 5066 * several reset type events. 5067 */ 5068 if (lun->flags & CTL_LUN_RESERVED) { 5069 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5070 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5071 && (ctsio->io_hdr.nexus.targ_target.id == 5072 lun->rsv_nexus.targ_target.id)) { 5073 lun->flags &= ~CTL_LUN_RESERVED; 5074 } 5075 } 5076 5077 mtx_unlock(&lun->lun_lock); 5078 5079 ctsio->scsi_status = SCSI_STATUS_OK; 5080 ctsio->io_hdr.status = CTL_SUCCESS; 5081 5082 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5083 free(ctsio->kern_data_ptr, M_CTL); 5084 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5085 } 5086 5087 ctl_done((union ctl_io *)ctsio); 5088 return (CTL_RETVAL_COMPLETE); 5089} 5090 5091int 5092ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5093{ 5094 int extent, thirdparty, longid; 5095 int resv_id, length; 5096 uint64_t thirdparty_id; 5097 struct ctl_softc *ctl_softc; 5098 struct ctl_lun *lun; 5099 5100 extent = 0; 5101 thirdparty = 0; 5102 longid = 0; 5103 resv_id = 0; 5104 length = 0; 5105 thirdparty_id = 0; 5106 5107 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5108 5109 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5110 ctl_softc = control_softc; 5111 5112 switch (ctsio->cdb[0]) { 5113 case RESERVE: { 5114 struct scsi_reserve *cdb; 5115 5116 cdb = (struct scsi_reserve *)ctsio->cdb; 5117 if ((cdb->byte2 & 0x1f) != 0) { 5118 ctl_set_invalid_field(ctsio, 5119 /*sks_valid*/ 1, 5120 /*command*/ 1, 5121 /*field*/ 1, 5122 /*bit_valid*/ 0, 5123 /*bit*/ 0); 5124 ctl_done((union ctl_io *)ctsio); 5125 return (CTL_RETVAL_COMPLETE); 5126 } 5127 resv_id = cdb->resv_id; 5128 length = scsi_2btoul(cdb->length); 5129 break; 5130 } 5131 case RESERVE_10: { 5132 struct scsi_reserve_10 *cdb; 5133 5134 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5135 5136 if ((cdb->byte2 & SR10_EXTENT) != 0) { 5137 ctl_set_invalid_field(ctsio, 5138 /*sks_valid*/ 1, 5139 /*command*/ 1, 5140 /*field*/ 1, 5141 /*bit_valid*/ 1, 5142 /*bit*/ 0); 5143 ctl_done((union ctl_io *)ctsio); 5144 return (CTL_RETVAL_COMPLETE); 5145 } 5146 if ((cdb->byte2 & SR10_3RDPTY) != 0) { 5147 ctl_set_invalid_field(ctsio, 5148 /*sks_valid*/ 1, 5149 /*command*/ 1, 5150 /*field*/ 1, 5151 /*bit_valid*/ 1, 5152 /*bit*/ 4); 5153 ctl_done((union ctl_io *)ctsio); 5154 return (CTL_RETVAL_COMPLETE); 5155 } 5156 if (cdb->byte2 & SR10_LONGID) 5157 longid = 1; 5158 else 5159 thirdparty_id = cdb->thirdparty_id; 5160 5161 resv_id = cdb->resv_id; 5162 length = scsi_2btoul(cdb->length); 5163 break; 5164 } 5165 } 5166 5167 /* 5168 * XXX KDM right now, we only support LUN reservation. We don't 5169 * support 3rd party reservations, or extent reservations, which 5170 * might actually need the parameter list. If we've gotten this 5171 * far, we've got a LUN reservation. Anything else got kicked out 5172 * above. So, according to SPC, ignore the length. 5173 */ 5174 length = 0; 5175 5176 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5177 && (length > 0)) { 5178 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5179 ctsio->kern_data_len = length; 5180 ctsio->kern_total_len = length; 5181 ctsio->kern_data_resid = 0; 5182 ctsio->kern_rel_offset = 0; 5183 ctsio->kern_sg_entries = 0; 5184 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5185 ctsio->be_move_done = ctl_config_move_done; 5186 ctl_datamove((union ctl_io *)ctsio); 5187 5188 return (CTL_RETVAL_COMPLETE); 5189 } 5190 5191 if (length > 0) 5192 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5193 5194 mtx_lock(&lun->lun_lock); 5195 if (lun->flags & CTL_LUN_RESERVED) { 5196 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5197 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5198 || (ctsio->io_hdr.nexus.targ_target.id != 5199 lun->rsv_nexus.targ_target.id)) { 5200 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5201 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5202 goto bailout; 5203 } 5204 } 5205 5206 lun->flags |= CTL_LUN_RESERVED; 5207 lun->rsv_nexus = ctsio->io_hdr.nexus; 5208 5209 ctsio->scsi_status = SCSI_STATUS_OK; 5210 ctsio->io_hdr.status = CTL_SUCCESS; 5211 5212bailout: 5213 mtx_unlock(&lun->lun_lock); 5214 5215 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5216 free(ctsio->kern_data_ptr, M_CTL); 5217 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5218 } 5219 5220 ctl_done((union ctl_io *)ctsio); 5221 return (CTL_RETVAL_COMPLETE); 5222} 5223 5224int 5225ctl_start_stop(struct ctl_scsiio *ctsio) 5226{ 5227 struct scsi_start_stop_unit *cdb; 5228 struct ctl_lun *lun; 5229 struct ctl_softc *ctl_softc; 5230 int retval; 5231 5232 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5233 5234 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5235 ctl_softc = control_softc; 5236 retval = 0; 5237 5238 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5239 5240 /* 5241 * XXX KDM 5242 * We don't support the immediate bit on a stop unit. In order to 5243 * do that, we would need to code up a way to know that a stop is 5244 * pending, and hold off any new commands until it completes, one 5245 * way or another. Then we could accept or reject those commands 5246 * depending on its status. We would almost need to do the reverse 5247 * of what we do below for an immediate start -- return the copy of 5248 * the ctl_io to the FETD with status to send to the host (and to 5249 * free the copy!) and then free the original I/O once the stop 5250 * actually completes. That way, the OOA queue mechanism can work 5251 * to block commands that shouldn't proceed. Another alternative 5252 * would be to put the copy in the queue in place of the original, 5253 * and return the original back to the caller. That could be 5254 * slightly safer.. 5255 */ 5256 if ((cdb->byte2 & SSS_IMMED) 5257 && ((cdb->how & SSS_START) == 0)) { 5258 ctl_set_invalid_field(ctsio, 5259 /*sks_valid*/ 1, 5260 /*command*/ 1, 5261 /*field*/ 1, 5262 /*bit_valid*/ 1, 5263 /*bit*/ 0); 5264 ctl_done((union ctl_io *)ctsio); 5265 return (CTL_RETVAL_COMPLETE); 5266 } 5267 5268 /* 5269 * We don't support the power conditions field. We need to check 5270 * this prior to checking the load/eject and start/stop bits. 5271 */ 5272 if ((cdb->how & SSS_PC_MASK) != SSS_PC_START_VALID) { 5273 ctl_set_invalid_field(ctsio, 5274 /*sks_valid*/ 1, 5275 /*command*/ 1, 5276 /*field*/ 4, 5277 /*bit_valid*/ 1, 5278 /*bit*/ 4); 5279 ctl_done((union ctl_io *)ctsio); 5280 return (CTL_RETVAL_COMPLETE); 5281 } 5282 5283 /* 5284 * Media isn't removable, so we can't load or eject it. 5285 */ 5286 if ((cdb->how & SSS_LOEJ) != 0) { 5287 ctl_set_invalid_field(ctsio, 5288 /*sks_valid*/ 1, 5289 /*command*/ 1, 5290 /*field*/ 4, 5291 /*bit_valid*/ 1, 5292 /*bit*/ 1); 5293 ctl_done((union ctl_io *)ctsio); 5294 return (CTL_RETVAL_COMPLETE); 5295 } 5296 5297 if ((lun->flags & CTL_LUN_PR_RESERVED) 5298 && ((cdb->how & SSS_START)==0)) { 5299 uint32_t residx; 5300 5301 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5302 if (!lun->per_res[residx].registered 5303 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5304 5305 ctl_set_reservation_conflict(ctsio); 5306 ctl_done((union ctl_io *)ctsio); 5307 return (CTL_RETVAL_COMPLETE); 5308 } 5309 } 5310 5311 /* 5312 * If there is no backend on this device, we can't start or stop 5313 * it. In theory we shouldn't get any start/stop commands in the 5314 * first place at this level if the LUN doesn't have a backend. 5315 * That should get stopped by the command decode code. 5316 */ 5317 if (lun->backend == NULL) { 5318 ctl_set_invalid_opcode(ctsio); 5319 ctl_done((union ctl_io *)ctsio); 5320 return (CTL_RETVAL_COMPLETE); 5321 } 5322 5323 /* 5324 * XXX KDM Copan-specific offline behavior. 5325 * Figure out a reasonable way to port this? 5326 */ 5327#ifdef NEEDTOPORT 5328 mtx_lock(&lun->lun_lock); 5329 5330 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5331 && (lun->flags & CTL_LUN_OFFLINE)) { 5332 /* 5333 * If the LUN is offline, and the on/offline bit isn't set, 5334 * reject the start or stop. Otherwise, let it through. 5335 */ 5336 mtx_unlock(&lun->lun_lock); 5337 ctl_set_lun_not_ready(ctsio); 5338 ctl_done((union ctl_io *)ctsio); 5339 } else { 5340 mtx_unlock(&lun->lun_lock); 5341#endif /* NEEDTOPORT */ 5342 /* 5343 * This could be a start or a stop when we're online, 5344 * or a stop/offline or start/online. A start or stop when 5345 * we're offline is covered in the case above. 5346 */ 5347 /* 5348 * In the non-immediate case, we send the request to 5349 * the backend and return status to the user when 5350 * it is done. 5351 * 5352 * In the immediate case, we allocate a new ctl_io 5353 * to hold a copy of the request, and send that to 5354 * the backend. We then set good status on the 5355 * user's request and return it immediately. 5356 */ 5357 if (cdb->byte2 & SSS_IMMED) { 5358 union ctl_io *new_io; 5359 5360 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5361 if (new_io == NULL) { 5362 ctl_set_busy(ctsio); 5363 ctl_done((union ctl_io *)ctsio); 5364 } else { 5365 ctl_copy_io((union ctl_io *)ctsio, 5366 new_io); 5367 retval = lun->backend->config_write(new_io); 5368 ctl_set_success(ctsio); 5369 ctl_done((union ctl_io *)ctsio); 5370 } 5371 } else { 5372 retval = lun->backend->config_write( 5373 (union ctl_io *)ctsio); 5374 } 5375#ifdef NEEDTOPORT 5376 } 5377#endif 5378 return (retval); 5379} 5380 5381/* 5382 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5383 * we don't really do anything with the LBA and length fields if the user 5384 * passes them in. Instead we'll just flush out the cache for the entire 5385 * LUN. 5386 */ 5387int 5388ctl_sync_cache(struct ctl_scsiio *ctsio) 5389{ 5390 struct ctl_lun *lun; 5391 struct ctl_softc *ctl_softc; 5392 uint64_t starting_lba; 5393 uint32_t block_count; 5394 int reladr, immed; 5395 int retval; 5396 5397 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5398 5399 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5400 ctl_softc = control_softc; 5401 retval = 0; 5402 reladr = 0; 5403 immed = 0; 5404 5405 switch (ctsio->cdb[0]) { 5406 case SYNCHRONIZE_CACHE: { 5407 struct scsi_sync_cache *cdb; 5408 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5409 5410 if (cdb->byte2 & SSC_RELADR) 5411 reladr = 1; 5412 5413 if (cdb->byte2 & SSC_IMMED) 5414 immed = 1; 5415 5416 starting_lba = scsi_4btoul(cdb->begin_lba); 5417 block_count = scsi_2btoul(cdb->lb_count); 5418 break; 5419 } 5420 case SYNCHRONIZE_CACHE_16: { 5421 struct scsi_sync_cache_16 *cdb; 5422 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5423 5424 if (cdb->byte2 & SSC_RELADR) 5425 reladr = 1; 5426 5427 if (cdb->byte2 & SSC_IMMED) 5428 immed = 1; 5429 5430 starting_lba = scsi_8btou64(cdb->begin_lba); 5431 block_count = scsi_4btoul(cdb->lb_count); 5432 break; 5433 } 5434 default: 5435 ctl_set_invalid_opcode(ctsio); 5436 ctl_done((union ctl_io *)ctsio); 5437 goto bailout; 5438 break; /* NOTREACHED */ 5439 } 5440 5441 if (immed) { 5442 /* 5443 * We don't support the immediate bit. Since it's in the 5444 * same place for the 10 and 16 byte SYNCHRONIZE CACHE 5445 * commands, we can just return the same error in either 5446 * case. 5447 */ 5448 ctl_set_invalid_field(ctsio, 5449 /*sks_valid*/ 1, 5450 /*command*/ 1, 5451 /*field*/ 1, 5452 /*bit_valid*/ 1, 5453 /*bit*/ 1); 5454 ctl_done((union ctl_io *)ctsio); 5455 goto bailout; 5456 } 5457 5458 if (reladr) { 5459 /* 5460 * We don't support the reladr bit either. It can only be 5461 * used with linked commands, and we don't support linked 5462 * commands. Since the bit is in the same place for the 5463 * 10 and 16 byte SYNCHRONIZE CACHE * commands, we can 5464 * just return the same error in either case. 5465 */ 5466 ctl_set_invalid_field(ctsio, 5467 /*sks_valid*/ 1, 5468 /*command*/ 1, 5469 /*field*/ 1, 5470 /*bit_valid*/ 1, 5471 /*bit*/ 0); 5472 ctl_done((union ctl_io *)ctsio); 5473 goto bailout; 5474 } 5475 5476 /* 5477 * We check the LBA and length, but don't do anything with them. 5478 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5479 * get flushed. This check will just help satisfy anyone who wants 5480 * to see an error for an out of range LBA. 5481 */ 5482 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5483 ctl_set_lba_out_of_range(ctsio); 5484 ctl_done((union ctl_io *)ctsio); 5485 goto bailout; 5486 } 5487 5488 /* 5489 * If this LUN has no backend, we can't flush the cache anyway. 5490 */ 5491 if (lun->backend == NULL) { 5492 ctl_set_invalid_opcode(ctsio); 5493 ctl_done((union ctl_io *)ctsio); 5494 goto bailout; 5495 } 5496 5497 /* 5498 * Check to see whether we're configured to send the SYNCHRONIZE 5499 * CACHE command directly to the back end. 5500 */ 5501 mtx_lock(&lun->lun_lock); 5502 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5503 && (++(lun->sync_count) >= lun->sync_interval)) { 5504 lun->sync_count = 0; 5505 mtx_unlock(&lun->lun_lock); 5506 retval = lun->backend->config_write((union ctl_io *)ctsio); 5507 } else { 5508 mtx_unlock(&lun->lun_lock); 5509 ctl_set_success(ctsio); 5510 ctl_done((union ctl_io *)ctsio); 5511 } 5512 5513bailout: 5514 5515 return (retval); 5516} 5517 5518int 5519ctl_format(struct ctl_scsiio *ctsio) 5520{ 5521 struct scsi_format *cdb; 5522 struct ctl_lun *lun; 5523 struct ctl_softc *ctl_softc; 5524 int length, defect_list_len; 5525 5526 CTL_DEBUG_PRINT(("ctl_format\n")); 5527 5528 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5529 ctl_softc = control_softc; 5530 5531 cdb = (struct scsi_format *)ctsio->cdb; 5532 5533 length = 0; 5534 if (cdb->byte2 & SF_FMTDATA) { 5535 if (cdb->byte2 & SF_LONGLIST) 5536 length = sizeof(struct scsi_format_header_long); 5537 else 5538 length = sizeof(struct scsi_format_header_short); 5539 } 5540 5541 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5542 && (length > 0)) { 5543 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5544 ctsio->kern_data_len = length; 5545 ctsio->kern_total_len = length; 5546 ctsio->kern_data_resid = 0; 5547 ctsio->kern_rel_offset = 0; 5548 ctsio->kern_sg_entries = 0; 5549 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5550 ctsio->be_move_done = ctl_config_move_done; 5551 ctl_datamove((union ctl_io *)ctsio); 5552 5553 return (CTL_RETVAL_COMPLETE); 5554 } 5555 5556 defect_list_len = 0; 5557 5558 if (cdb->byte2 & SF_FMTDATA) { 5559 if (cdb->byte2 & SF_LONGLIST) { 5560 struct scsi_format_header_long *header; 5561 5562 header = (struct scsi_format_header_long *) 5563 ctsio->kern_data_ptr; 5564 5565 defect_list_len = scsi_4btoul(header->defect_list_len); 5566 if (defect_list_len != 0) { 5567 ctl_set_invalid_field(ctsio, 5568 /*sks_valid*/ 1, 5569 /*command*/ 0, 5570 /*field*/ 2, 5571 /*bit_valid*/ 0, 5572 /*bit*/ 0); 5573 goto bailout; 5574 } 5575 } else { 5576 struct scsi_format_header_short *header; 5577 5578 header = (struct scsi_format_header_short *) 5579 ctsio->kern_data_ptr; 5580 5581 defect_list_len = scsi_2btoul(header->defect_list_len); 5582 if (defect_list_len != 0) { 5583 ctl_set_invalid_field(ctsio, 5584 /*sks_valid*/ 1, 5585 /*command*/ 0, 5586 /*field*/ 2, 5587 /*bit_valid*/ 0, 5588 /*bit*/ 0); 5589 goto bailout; 5590 } 5591 } 5592 } 5593 5594 /* 5595 * The format command will clear out the "Medium format corrupted" 5596 * status if set by the configuration code. That status is really 5597 * just a way to notify the host that we have lost the media, and 5598 * get them to issue a command that will basically make them think 5599 * they're blowing away the media. 5600 */ 5601 mtx_lock(&lun->lun_lock); 5602 lun->flags &= ~CTL_LUN_INOPERABLE; 5603 mtx_unlock(&lun->lun_lock); 5604 5605 ctsio->scsi_status = SCSI_STATUS_OK; 5606 ctsio->io_hdr.status = CTL_SUCCESS; 5607bailout: 5608 5609 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5610 free(ctsio->kern_data_ptr, M_CTL); 5611 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5612 } 5613 5614 ctl_done((union ctl_io *)ctsio); 5615 return (CTL_RETVAL_COMPLETE); 5616} 5617 5618int 5619ctl_read_buffer(struct ctl_scsiio *ctsio) 5620{ 5621 struct scsi_read_buffer *cdb; 5622 struct ctl_lun *lun; 5623 int buffer_offset, len; 5624 static uint8_t descr[4]; 5625 static uint8_t echo_descr[4] = { 0 }; 5626 5627 CTL_DEBUG_PRINT(("ctl_read_buffer\n")); 5628 5629 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5630 cdb = (struct scsi_read_buffer *)ctsio->cdb; 5631 5632 if (lun->flags & CTL_LUN_PR_RESERVED) { 5633 uint32_t residx; 5634 5635 /* 5636 * XXX KDM need a lock here. 5637 */ 5638 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5639 if ((lun->res_type == SPR_TYPE_EX_AC 5640 && residx != lun->pr_res_idx) 5641 || ((lun->res_type == SPR_TYPE_EX_AC_RO 5642 || lun->res_type == SPR_TYPE_EX_AC_AR) 5643 && !lun->per_res[residx].registered)) { 5644 ctl_set_reservation_conflict(ctsio); 5645 ctl_done((union ctl_io *)ctsio); 5646 return (CTL_RETVAL_COMPLETE); 5647 } 5648 } 5649 5650 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA && 5651 (cdb->byte2 & RWB_MODE) != RWB_MODE_ECHO_DESCR && 5652 (cdb->byte2 & RWB_MODE) != RWB_MODE_DESCR) { 5653 ctl_set_invalid_field(ctsio, 5654 /*sks_valid*/ 1, 5655 /*command*/ 1, 5656 /*field*/ 1, 5657 /*bit_valid*/ 1, 5658 /*bit*/ 4); 5659 ctl_done((union ctl_io *)ctsio); 5660 return (CTL_RETVAL_COMPLETE); 5661 } 5662 if (cdb->buffer_id != 0) { 5663 ctl_set_invalid_field(ctsio, 5664 /*sks_valid*/ 1, 5665 /*command*/ 1, 5666 /*field*/ 2, 5667 /*bit_valid*/ 0, 5668 /*bit*/ 0); 5669 ctl_done((union ctl_io *)ctsio); 5670 return (CTL_RETVAL_COMPLETE); 5671 } 5672 5673 len = scsi_3btoul(cdb->length); 5674 buffer_offset = scsi_3btoul(cdb->offset); 5675 5676 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5677 ctl_set_invalid_field(ctsio, 5678 /*sks_valid*/ 1, 5679 /*command*/ 1, 5680 /*field*/ 6, 5681 /*bit_valid*/ 0, 5682 /*bit*/ 0); 5683 ctl_done((union ctl_io *)ctsio); 5684 return (CTL_RETVAL_COMPLETE); 5685 } 5686 5687 if ((cdb->byte2 & RWB_MODE) == RWB_MODE_DESCR) { 5688 descr[0] = 0; 5689 scsi_ulto3b(sizeof(lun->write_buffer), &descr[1]); 5690 ctsio->kern_data_ptr = descr; 5691 len = min(len, sizeof(descr)); 5692 } else if ((cdb->byte2 & RWB_MODE) == RWB_MODE_ECHO_DESCR) { 5693 ctsio->kern_data_ptr = echo_descr; 5694 len = min(len, sizeof(echo_descr)); 5695 } else 5696 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5697 ctsio->kern_data_len = len; 5698 ctsio->kern_total_len = len; 5699 ctsio->kern_data_resid = 0; 5700 ctsio->kern_rel_offset = 0; 5701 ctsio->kern_sg_entries = 0; 5702 ctsio->be_move_done = ctl_config_move_done; 5703 ctl_datamove((union ctl_io *)ctsio); 5704 5705 return (CTL_RETVAL_COMPLETE); 5706} 5707 5708int 5709ctl_write_buffer(struct ctl_scsiio *ctsio) 5710{ 5711 struct scsi_write_buffer *cdb; 5712 struct ctl_lun *lun; 5713 int buffer_offset, len; 5714 5715 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5716 5717 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5718 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5719 5720 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5721 ctl_set_invalid_field(ctsio, 5722 /*sks_valid*/ 1, 5723 /*command*/ 1, 5724 /*field*/ 1, 5725 /*bit_valid*/ 1, 5726 /*bit*/ 4); 5727 ctl_done((union ctl_io *)ctsio); 5728 return (CTL_RETVAL_COMPLETE); 5729 } 5730 if (cdb->buffer_id != 0) { 5731 ctl_set_invalid_field(ctsio, 5732 /*sks_valid*/ 1, 5733 /*command*/ 1, 5734 /*field*/ 2, 5735 /*bit_valid*/ 0, 5736 /*bit*/ 0); 5737 ctl_done((union ctl_io *)ctsio); 5738 return (CTL_RETVAL_COMPLETE); 5739 } 5740 5741 len = scsi_3btoul(cdb->length); 5742 buffer_offset = scsi_3btoul(cdb->offset); 5743 5744 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5745 ctl_set_invalid_field(ctsio, 5746 /*sks_valid*/ 1, 5747 /*command*/ 1, 5748 /*field*/ 6, 5749 /*bit_valid*/ 0, 5750 /*bit*/ 0); 5751 ctl_done((union ctl_io *)ctsio); 5752 return (CTL_RETVAL_COMPLETE); 5753 } 5754 5755 /* 5756 * If we've got a kernel request that hasn't been malloced yet, 5757 * malloc it and tell the caller the data buffer is here. 5758 */ 5759 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5760 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5761 ctsio->kern_data_len = len; 5762 ctsio->kern_total_len = len; 5763 ctsio->kern_data_resid = 0; 5764 ctsio->kern_rel_offset = 0; 5765 ctsio->kern_sg_entries = 0; 5766 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5767 ctsio->be_move_done = ctl_config_move_done; 5768 ctl_datamove((union ctl_io *)ctsio); 5769 5770 return (CTL_RETVAL_COMPLETE); 5771 } 5772 5773 ctl_done((union ctl_io *)ctsio); 5774 5775 return (CTL_RETVAL_COMPLETE); 5776} 5777 5778int 5779ctl_write_same(struct ctl_scsiio *ctsio) 5780{ 5781 struct ctl_lun *lun; 5782 struct ctl_lba_len_flags *lbalen; 5783 uint64_t lba; 5784 uint32_t num_blocks; 5785 int len, retval; 5786 uint8_t byte2; 5787 5788 retval = CTL_RETVAL_COMPLETE; 5789 5790 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5791 5792 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5793 5794 switch (ctsio->cdb[0]) { 5795 case WRITE_SAME_10: { 5796 struct scsi_write_same_10 *cdb; 5797 5798 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5799 5800 lba = scsi_4btoul(cdb->addr); 5801 num_blocks = scsi_2btoul(cdb->length); 5802 byte2 = cdb->byte2; 5803 break; 5804 } 5805 case WRITE_SAME_16: { 5806 struct scsi_write_same_16 *cdb; 5807 5808 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5809 5810 lba = scsi_8btou64(cdb->addr); 5811 num_blocks = scsi_4btoul(cdb->length); 5812 byte2 = cdb->byte2; 5813 break; 5814 } 5815 default: 5816 /* 5817 * We got a command we don't support. This shouldn't 5818 * happen, commands should be filtered out above us. 5819 */ 5820 ctl_set_invalid_opcode(ctsio); 5821 ctl_done((union ctl_io *)ctsio); 5822 5823 return (CTL_RETVAL_COMPLETE); 5824 break; /* NOTREACHED */ 5825 } 5826 5827 /* 5828 * The first check is to make sure we're in bounds, the second 5829 * check is to catch wrap-around problems. If the lba + num blocks 5830 * is less than the lba, then we've wrapped around and the block 5831 * range is invalid anyway. 5832 */ 5833 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5834 || ((lba + num_blocks) < lba)) { 5835 ctl_set_lba_out_of_range(ctsio); 5836 ctl_done((union ctl_io *)ctsio); 5837 return (CTL_RETVAL_COMPLETE); 5838 } 5839 5840 /* Zero number of blocks means "to the last logical block" */ 5841 if (num_blocks == 0) { 5842 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5843 ctl_set_invalid_field(ctsio, 5844 /*sks_valid*/ 0, 5845 /*command*/ 1, 5846 /*field*/ 0, 5847 /*bit_valid*/ 0, 5848 /*bit*/ 0); 5849 ctl_done((union ctl_io *)ctsio); 5850 return (CTL_RETVAL_COMPLETE); 5851 } 5852 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5853 } 5854 5855 len = lun->be_lun->blocksize; 5856 5857 /* 5858 * If we've got a kernel request that hasn't been malloced yet, 5859 * malloc it and tell the caller the data buffer is here. 5860 */ 5861 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5862 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5863 ctsio->kern_data_len = len; 5864 ctsio->kern_total_len = len; 5865 ctsio->kern_data_resid = 0; 5866 ctsio->kern_rel_offset = 0; 5867 ctsio->kern_sg_entries = 0; 5868 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5869 ctsio->be_move_done = ctl_config_move_done; 5870 ctl_datamove((union ctl_io *)ctsio); 5871 5872 return (CTL_RETVAL_COMPLETE); 5873 } 5874 5875 lbalen = (struct ctl_lba_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5876 lbalen->lba = lba; 5877 lbalen->len = num_blocks; 5878 lbalen->flags = byte2; 5879 retval = lun->backend->config_write((union ctl_io *)ctsio); 5880 5881 return (retval); 5882} 5883 5884int 5885ctl_unmap(struct ctl_scsiio *ctsio) 5886{ 5887 struct ctl_lun *lun; 5888 struct scsi_unmap *cdb; 5889 struct ctl_ptr_len_flags *ptrlen; 5890 struct scsi_unmap_header *hdr; 5891 struct scsi_unmap_desc *buf, *end; 5892 uint64_t lba; 5893 uint32_t num_blocks; 5894 int len, retval; 5895 uint8_t byte2; 5896 5897 retval = CTL_RETVAL_COMPLETE; 5898 5899 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5900 5901 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5902 cdb = (struct scsi_unmap *)ctsio->cdb; 5903 5904 len = scsi_2btoul(cdb->length); 5905 byte2 = cdb->byte2; 5906 5907 /* 5908 * If we've got a kernel request that hasn't been malloced yet, 5909 * malloc it and tell the caller the data buffer is here. 5910 */ 5911 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5912 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5913 ctsio->kern_data_len = len; 5914 ctsio->kern_total_len = len; 5915 ctsio->kern_data_resid = 0; 5916 ctsio->kern_rel_offset = 0; 5917 ctsio->kern_sg_entries = 0; 5918 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5919 ctsio->be_move_done = ctl_config_move_done; 5920 ctl_datamove((union ctl_io *)ctsio); 5921 5922 return (CTL_RETVAL_COMPLETE); 5923 } 5924 5925 len = ctsio->kern_total_len - ctsio->kern_data_resid; 5926 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 5927 if (len < sizeof (*hdr) || 5928 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 5929 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 5930 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 5931 ctl_set_invalid_field(ctsio, 5932 /*sks_valid*/ 0, 5933 /*command*/ 0, 5934 /*field*/ 0, 5935 /*bit_valid*/ 0, 5936 /*bit*/ 0); 5937 ctl_done((union ctl_io *)ctsio); 5938 return (CTL_RETVAL_COMPLETE); 5939 } 5940 len = scsi_2btoul(hdr->desc_length); 5941 buf = (struct scsi_unmap_desc *)(hdr + 1); 5942 end = buf + len / sizeof(*buf); 5943 5944 ptrlen = (struct ctl_ptr_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5945 ptrlen->ptr = (void *)buf; 5946 ptrlen->len = len; 5947 ptrlen->flags = byte2; 5948 5949 for (; buf < end; buf++) { 5950 lba = scsi_8btou64(buf->lba); 5951 num_blocks = scsi_4btoul(buf->length); 5952 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5953 || ((lba + num_blocks) < lba)) { 5954 ctl_set_lba_out_of_range(ctsio); 5955 ctl_done((union ctl_io *)ctsio); 5956 return (CTL_RETVAL_COMPLETE); 5957 } 5958 } 5959 5960 retval = lun->backend->config_write((union ctl_io *)ctsio); 5961 5962 return (retval); 5963} 5964 5965/* 5966 * Note that this function currently doesn't actually do anything inside 5967 * CTL to enforce things if the DQue bit is turned on. 5968 * 5969 * Also note that this function can't be used in the default case, because 5970 * the DQue bit isn't set in the changeable mask for the control mode page 5971 * anyway. This is just here as an example for how to implement a page 5972 * handler, and a placeholder in case we want to allow the user to turn 5973 * tagged queueing on and off. 5974 * 5975 * The D_SENSE bit handling is functional, however, and will turn 5976 * descriptor sense on and off for a given LUN. 5977 */ 5978int 5979ctl_control_page_handler(struct ctl_scsiio *ctsio, 5980 struct ctl_page_index *page_index, uint8_t *page_ptr) 5981{ 5982 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 5983 struct ctl_lun *lun; 5984 struct ctl_softc *softc; 5985 int set_ua; 5986 uint32_t initidx; 5987 5988 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5989 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 5990 set_ua = 0; 5991 5992 user_cp = (struct scsi_control_page *)page_ptr; 5993 current_cp = (struct scsi_control_page *) 5994 (page_index->page_data + (page_index->page_len * 5995 CTL_PAGE_CURRENT)); 5996 saved_cp = (struct scsi_control_page *) 5997 (page_index->page_data + (page_index->page_len * 5998 CTL_PAGE_SAVED)); 5999 6000 softc = control_softc; 6001 6002 mtx_lock(&lun->lun_lock); 6003 if (((current_cp->rlec & SCP_DSENSE) == 0) 6004 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 6005 /* 6006 * Descriptor sense is currently turned off and the user 6007 * wants to turn it on. 6008 */ 6009 current_cp->rlec |= SCP_DSENSE; 6010 saved_cp->rlec |= SCP_DSENSE; 6011 lun->flags |= CTL_LUN_SENSE_DESC; 6012 set_ua = 1; 6013 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 6014 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 6015 /* 6016 * Descriptor sense is currently turned on, and the user 6017 * wants to turn it off. 6018 */ 6019 current_cp->rlec &= ~SCP_DSENSE; 6020 saved_cp->rlec &= ~SCP_DSENSE; 6021 lun->flags &= ~CTL_LUN_SENSE_DESC; 6022 set_ua = 1; 6023 } 6024 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 6025 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6026#ifdef NEEDTOPORT 6027 csevent_log(CSC_CTL | CSC_SHELF_SW | 6028 CTL_UNTAG_TO_UNTAG, 6029 csevent_LogType_Trace, 6030 csevent_Severity_Information, 6031 csevent_AlertLevel_Green, 6032 csevent_FRU_Firmware, 6033 csevent_FRU_Unknown, 6034 "Received untagged to untagged transition"); 6035#endif /* NEEDTOPORT */ 6036 } else { 6037#ifdef NEEDTOPORT 6038 csevent_log(CSC_CTL | CSC_SHELF_SW | 6039 CTL_UNTAG_TO_TAG, 6040 csevent_LogType_ConfigChange, 6041 csevent_Severity_Information, 6042 csevent_AlertLevel_Green, 6043 csevent_FRU_Firmware, 6044 csevent_FRU_Unknown, 6045 "Received untagged to tagged " 6046 "queueing transition"); 6047#endif /* NEEDTOPORT */ 6048 6049 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6050 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6051 set_ua = 1; 6052 } 6053 } else { 6054 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6055#ifdef NEEDTOPORT 6056 csevent_log(CSC_CTL | CSC_SHELF_SW | 6057 CTL_TAG_TO_UNTAG, 6058 csevent_LogType_ConfigChange, 6059 csevent_Severity_Warning, 6060 csevent_AlertLevel_Yellow, 6061 csevent_FRU_Firmware, 6062 csevent_FRU_Unknown, 6063 "Received tagged queueing to untagged " 6064 "transition"); 6065#endif /* NEEDTOPORT */ 6066 6067 current_cp->queue_flags |= SCP_QUEUE_DQUE; 6068 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 6069 set_ua = 1; 6070 } else { 6071#ifdef NEEDTOPORT 6072 csevent_log(CSC_CTL | CSC_SHELF_SW | 6073 CTL_TAG_TO_TAG, 6074 csevent_LogType_Trace, 6075 csevent_Severity_Information, 6076 csevent_AlertLevel_Green, 6077 csevent_FRU_Firmware, 6078 csevent_FRU_Unknown, 6079 "Received tagged queueing to tagged " 6080 "queueing transition"); 6081#endif /* NEEDTOPORT */ 6082 } 6083 } 6084 if (set_ua != 0) { 6085 int i; 6086 /* 6087 * Let other initiators know that the mode 6088 * parameters for this LUN have changed. 6089 */ 6090 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6091 if (i == initidx) 6092 continue; 6093 6094 lun->pending_sense[i].ua_pending |= 6095 CTL_UA_MODE_CHANGE; 6096 } 6097 } 6098 mtx_unlock(&lun->lun_lock); 6099 6100 return (0); 6101} 6102 6103int 6104ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6105 struct ctl_page_index *page_index, uint8_t *page_ptr) 6106{ 6107 return (0); 6108} 6109 6110int 6111ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6112 struct ctl_page_index *page_index, int pc) 6113{ 6114 struct copan_power_subpage *page; 6115 6116 page = (struct copan_power_subpage *)page_index->page_data + 6117 (page_index->page_len * pc); 6118 6119 switch (pc) { 6120 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6121 /* 6122 * We don't update the changable bits for this page. 6123 */ 6124 break; 6125 case SMS_PAGE_CTRL_CURRENT >> 6: 6126 case SMS_PAGE_CTRL_DEFAULT >> 6: 6127 case SMS_PAGE_CTRL_SAVED >> 6: 6128#ifdef NEEDTOPORT 6129 ctl_update_power_subpage(page); 6130#endif 6131 break; 6132 default: 6133#ifdef NEEDTOPORT 6134 EPRINT(0, "Invalid PC %d!!", pc); 6135#endif 6136 break; 6137 } 6138 return (0); 6139} 6140 6141 6142int 6143ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6144 struct ctl_page_index *page_index, uint8_t *page_ptr) 6145{ 6146 struct copan_aps_subpage *user_sp; 6147 struct copan_aps_subpage *current_sp; 6148 union ctl_modepage_info *modepage_info; 6149 struct ctl_softc *softc; 6150 struct ctl_lun *lun; 6151 int retval; 6152 6153 retval = CTL_RETVAL_COMPLETE; 6154 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6155 (page_index->page_len * CTL_PAGE_CURRENT)); 6156 softc = control_softc; 6157 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6158 6159 user_sp = (struct copan_aps_subpage *)page_ptr; 6160 6161 modepage_info = (union ctl_modepage_info *) 6162 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6163 6164 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6165 modepage_info->header.subpage = page_index->subpage; 6166 modepage_info->aps.lock_active = user_sp->lock_active; 6167 6168 mtx_lock(&softc->ctl_lock); 6169 6170 /* 6171 * If there is a request to lock the LUN and another LUN is locked 6172 * this is an error. If the requested LUN is already locked ignore 6173 * the request. If no LUN is locked attempt to lock it. 6174 * if there is a request to unlock the LUN and the LUN is currently 6175 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6176 * if another LUN is locked or no LUN is locked. 6177 */ 6178 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6179 if (softc->aps_locked_lun == lun->lun) { 6180 /* 6181 * This LUN is already locked, so we're done. 6182 */ 6183 retval = CTL_RETVAL_COMPLETE; 6184 } else if (softc->aps_locked_lun == 0) { 6185 /* 6186 * No one has the lock, pass the request to the 6187 * backend. 6188 */ 6189 retval = lun->backend->config_write( 6190 (union ctl_io *)ctsio); 6191 } else { 6192 /* 6193 * Someone else has the lock, throw out the request. 6194 */ 6195 ctl_set_already_locked(ctsio); 6196 free(ctsio->kern_data_ptr, M_CTL); 6197 ctl_done((union ctl_io *)ctsio); 6198 6199 /* 6200 * Set the return value so that ctl_do_mode_select() 6201 * won't try to complete the command. We already 6202 * completed it here. 6203 */ 6204 retval = CTL_RETVAL_ERROR; 6205 } 6206 } else if (softc->aps_locked_lun == lun->lun) { 6207 /* 6208 * This LUN is locked, so pass the unlock request to the 6209 * backend. 6210 */ 6211 retval = lun->backend->config_write((union ctl_io *)ctsio); 6212 } 6213 mtx_unlock(&softc->ctl_lock); 6214 6215 return (retval); 6216} 6217 6218int 6219ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6220 struct ctl_page_index *page_index, 6221 uint8_t *page_ptr) 6222{ 6223 uint8_t *c; 6224 int i; 6225 6226 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6227 ctl_time_io_secs = 6228 (c[0] << 8) | 6229 (c[1] << 0) | 6230 0; 6231 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6232 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6233 printf("page data:"); 6234 for (i=0; i<8; i++) 6235 printf(" %.2x",page_ptr[i]); 6236 printf("\n"); 6237 return (0); 6238} 6239 6240int 6241ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6242 struct ctl_page_index *page_index, 6243 int pc) 6244{ 6245 struct copan_debugconf_subpage *page; 6246 6247 page = (struct copan_debugconf_subpage *)page_index->page_data + 6248 (page_index->page_len * pc); 6249 6250 switch (pc) { 6251 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6252 case SMS_PAGE_CTRL_DEFAULT >> 6: 6253 case SMS_PAGE_CTRL_SAVED >> 6: 6254 /* 6255 * We don't update the changable or default bits for this page. 6256 */ 6257 break; 6258 case SMS_PAGE_CTRL_CURRENT >> 6: 6259 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6260 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6261 break; 6262 default: 6263#ifdef NEEDTOPORT 6264 EPRINT(0, "Invalid PC %d!!", pc); 6265#endif /* NEEDTOPORT */ 6266 break; 6267 } 6268 return (0); 6269} 6270 6271 6272static int 6273ctl_do_mode_select(union ctl_io *io) 6274{ 6275 struct scsi_mode_page_header *page_header; 6276 struct ctl_page_index *page_index; 6277 struct ctl_scsiio *ctsio; 6278 int control_dev, page_len; 6279 int page_len_offset, page_len_size; 6280 union ctl_modepage_info *modepage_info; 6281 struct ctl_lun *lun; 6282 int *len_left, *len_used; 6283 int retval, i; 6284 6285 ctsio = &io->scsiio; 6286 page_index = NULL; 6287 page_len = 0; 6288 retval = CTL_RETVAL_COMPLETE; 6289 6290 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6291 6292 if (lun->be_lun->lun_type != T_DIRECT) 6293 control_dev = 1; 6294 else 6295 control_dev = 0; 6296 6297 modepage_info = (union ctl_modepage_info *) 6298 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6299 len_left = &modepage_info->header.len_left; 6300 len_used = &modepage_info->header.len_used; 6301 6302do_next_page: 6303 6304 page_header = (struct scsi_mode_page_header *) 6305 (ctsio->kern_data_ptr + *len_used); 6306 6307 if (*len_left == 0) { 6308 free(ctsio->kern_data_ptr, M_CTL); 6309 ctl_set_success(ctsio); 6310 ctl_done((union ctl_io *)ctsio); 6311 return (CTL_RETVAL_COMPLETE); 6312 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6313 6314 free(ctsio->kern_data_ptr, M_CTL); 6315 ctl_set_param_len_error(ctsio); 6316 ctl_done((union ctl_io *)ctsio); 6317 return (CTL_RETVAL_COMPLETE); 6318 6319 } else if ((page_header->page_code & SMPH_SPF) 6320 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6321 6322 free(ctsio->kern_data_ptr, M_CTL); 6323 ctl_set_param_len_error(ctsio); 6324 ctl_done((union ctl_io *)ctsio); 6325 return (CTL_RETVAL_COMPLETE); 6326 } 6327 6328 6329 /* 6330 * XXX KDM should we do something with the block descriptor? 6331 */ 6332 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6333 6334 if ((control_dev != 0) 6335 && (lun->mode_pages.index[i].page_flags & 6336 CTL_PAGE_FLAG_DISK_ONLY)) 6337 continue; 6338 6339 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6340 (page_header->page_code & SMPH_PC_MASK)) 6341 continue; 6342 6343 /* 6344 * If neither page has a subpage code, then we've got a 6345 * match. 6346 */ 6347 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6348 && ((page_header->page_code & SMPH_SPF) == 0)) { 6349 page_index = &lun->mode_pages.index[i]; 6350 page_len = page_header->page_length; 6351 break; 6352 } 6353 6354 /* 6355 * If both pages have subpages, then the subpage numbers 6356 * have to match. 6357 */ 6358 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6359 && (page_header->page_code & SMPH_SPF)) { 6360 struct scsi_mode_page_header_sp *sph; 6361 6362 sph = (struct scsi_mode_page_header_sp *)page_header; 6363 6364 if (lun->mode_pages.index[i].subpage == 6365 sph->subpage) { 6366 page_index = &lun->mode_pages.index[i]; 6367 page_len = scsi_2btoul(sph->page_length); 6368 break; 6369 } 6370 } 6371 } 6372 6373 /* 6374 * If we couldn't find the page, or if we don't have a mode select 6375 * handler for it, send back an error to the user. 6376 */ 6377 if ((page_index == NULL) 6378 || (page_index->select_handler == NULL)) { 6379 ctl_set_invalid_field(ctsio, 6380 /*sks_valid*/ 1, 6381 /*command*/ 0, 6382 /*field*/ *len_used, 6383 /*bit_valid*/ 0, 6384 /*bit*/ 0); 6385 free(ctsio->kern_data_ptr, M_CTL); 6386 ctl_done((union ctl_io *)ctsio); 6387 return (CTL_RETVAL_COMPLETE); 6388 } 6389 6390 if (page_index->page_code & SMPH_SPF) { 6391 page_len_offset = 2; 6392 page_len_size = 2; 6393 } else { 6394 page_len_size = 1; 6395 page_len_offset = 1; 6396 } 6397 6398 /* 6399 * If the length the initiator gives us isn't the one we specify in 6400 * the mode page header, or if they didn't specify enough data in 6401 * the CDB to avoid truncating this page, kick out the request. 6402 */ 6403 if ((page_len != (page_index->page_len - page_len_offset - 6404 page_len_size)) 6405 || (*len_left < page_index->page_len)) { 6406 6407 6408 ctl_set_invalid_field(ctsio, 6409 /*sks_valid*/ 1, 6410 /*command*/ 0, 6411 /*field*/ *len_used + page_len_offset, 6412 /*bit_valid*/ 0, 6413 /*bit*/ 0); 6414 free(ctsio->kern_data_ptr, M_CTL); 6415 ctl_done((union ctl_io *)ctsio); 6416 return (CTL_RETVAL_COMPLETE); 6417 } 6418 6419 /* 6420 * Run through the mode page, checking to make sure that the bits 6421 * the user changed are actually legal for him to change. 6422 */ 6423 for (i = 0; i < page_index->page_len; i++) { 6424 uint8_t *user_byte, *change_mask, *current_byte; 6425 int bad_bit; 6426 int j; 6427 6428 user_byte = (uint8_t *)page_header + i; 6429 change_mask = page_index->page_data + 6430 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6431 current_byte = page_index->page_data + 6432 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6433 6434 /* 6435 * Check to see whether the user set any bits in this byte 6436 * that he is not allowed to set. 6437 */ 6438 if ((*user_byte & ~(*change_mask)) == 6439 (*current_byte & ~(*change_mask))) 6440 continue; 6441 6442 /* 6443 * Go through bit by bit to determine which one is illegal. 6444 */ 6445 bad_bit = 0; 6446 for (j = 7; j >= 0; j--) { 6447 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6448 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6449 bad_bit = i; 6450 break; 6451 } 6452 } 6453 ctl_set_invalid_field(ctsio, 6454 /*sks_valid*/ 1, 6455 /*command*/ 0, 6456 /*field*/ *len_used + i, 6457 /*bit_valid*/ 1, 6458 /*bit*/ bad_bit); 6459 free(ctsio->kern_data_ptr, M_CTL); 6460 ctl_done((union ctl_io *)ctsio); 6461 return (CTL_RETVAL_COMPLETE); 6462 } 6463 6464 /* 6465 * Decrement these before we call the page handler, since we may 6466 * end up getting called back one way or another before the handler 6467 * returns to this context. 6468 */ 6469 *len_left -= page_index->page_len; 6470 *len_used += page_index->page_len; 6471 6472 retval = page_index->select_handler(ctsio, page_index, 6473 (uint8_t *)page_header); 6474 6475 /* 6476 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6477 * wait until this queued command completes to finish processing 6478 * the mode page. If it returns anything other than 6479 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6480 * already set the sense information, freed the data pointer, and 6481 * completed the io for us. 6482 */ 6483 if (retval != CTL_RETVAL_COMPLETE) 6484 goto bailout_no_done; 6485 6486 /* 6487 * If the initiator sent us more than one page, parse the next one. 6488 */ 6489 if (*len_left > 0) 6490 goto do_next_page; 6491 6492 ctl_set_success(ctsio); 6493 free(ctsio->kern_data_ptr, M_CTL); 6494 ctl_done((union ctl_io *)ctsio); 6495 6496bailout_no_done: 6497 6498 return (CTL_RETVAL_COMPLETE); 6499 6500} 6501 6502int 6503ctl_mode_select(struct ctl_scsiio *ctsio) 6504{ 6505 int param_len, pf, sp; 6506 int header_size, bd_len; 6507 int len_left, len_used; 6508 struct ctl_page_index *page_index; 6509 struct ctl_lun *lun; 6510 int control_dev, page_len; 6511 union ctl_modepage_info *modepage_info; 6512 int retval; 6513 6514 pf = 0; 6515 sp = 0; 6516 page_len = 0; 6517 len_used = 0; 6518 len_left = 0; 6519 retval = 0; 6520 bd_len = 0; 6521 page_index = NULL; 6522 6523 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6524 6525 if (lun->be_lun->lun_type != T_DIRECT) 6526 control_dev = 1; 6527 else 6528 control_dev = 0; 6529 6530 switch (ctsio->cdb[0]) { 6531 case MODE_SELECT_6: { 6532 struct scsi_mode_select_6 *cdb; 6533 6534 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6535 6536 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6537 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6538 6539 param_len = cdb->length; 6540 header_size = sizeof(struct scsi_mode_header_6); 6541 break; 6542 } 6543 case MODE_SELECT_10: { 6544 struct scsi_mode_select_10 *cdb; 6545 6546 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6547 6548 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6549 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6550 6551 param_len = scsi_2btoul(cdb->length); 6552 header_size = sizeof(struct scsi_mode_header_10); 6553 break; 6554 } 6555 default: 6556 ctl_set_invalid_opcode(ctsio); 6557 ctl_done((union ctl_io *)ctsio); 6558 return (CTL_RETVAL_COMPLETE); 6559 break; /* NOTREACHED */ 6560 } 6561 6562 /* 6563 * From SPC-3: 6564 * "A parameter list length of zero indicates that the Data-Out Buffer 6565 * shall be empty. This condition shall not be considered as an error." 6566 */ 6567 if (param_len == 0) { 6568 ctl_set_success(ctsio); 6569 ctl_done((union ctl_io *)ctsio); 6570 return (CTL_RETVAL_COMPLETE); 6571 } 6572 6573 /* 6574 * Since we'll hit this the first time through, prior to 6575 * allocation, we don't need to free a data buffer here. 6576 */ 6577 if (param_len < header_size) { 6578 ctl_set_param_len_error(ctsio); 6579 ctl_done((union ctl_io *)ctsio); 6580 return (CTL_RETVAL_COMPLETE); 6581 } 6582 6583 /* 6584 * Allocate the data buffer and grab the user's data. In theory, 6585 * we shouldn't have to sanity check the parameter list length here 6586 * because the maximum size is 64K. We should be able to malloc 6587 * that much without too many problems. 6588 */ 6589 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6590 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6591 ctsio->kern_data_len = param_len; 6592 ctsio->kern_total_len = param_len; 6593 ctsio->kern_data_resid = 0; 6594 ctsio->kern_rel_offset = 0; 6595 ctsio->kern_sg_entries = 0; 6596 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6597 ctsio->be_move_done = ctl_config_move_done; 6598 ctl_datamove((union ctl_io *)ctsio); 6599 6600 return (CTL_RETVAL_COMPLETE); 6601 } 6602 6603 switch (ctsio->cdb[0]) { 6604 case MODE_SELECT_6: { 6605 struct scsi_mode_header_6 *mh6; 6606 6607 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6608 bd_len = mh6->blk_desc_len; 6609 break; 6610 } 6611 case MODE_SELECT_10: { 6612 struct scsi_mode_header_10 *mh10; 6613 6614 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6615 bd_len = scsi_2btoul(mh10->blk_desc_len); 6616 break; 6617 } 6618 default: 6619 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6620 break; 6621 } 6622 6623 if (param_len < (header_size + bd_len)) { 6624 free(ctsio->kern_data_ptr, M_CTL); 6625 ctl_set_param_len_error(ctsio); 6626 ctl_done((union ctl_io *)ctsio); 6627 return (CTL_RETVAL_COMPLETE); 6628 } 6629 6630 /* 6631 * Set the IO_CONT flag, so that if this I/O gets passed to 6632 * ctl_config_write_done(), it'll get passed back to 6633 * ctl_do_mode_select() for further processing, or completion if 6634 * we're all done. 6635 */ 6636 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6637 ctsio->io_cont = ctl_do_mode_select; 6638 6639 modepage_info = (union ctl_modepage_info *) 6640 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6641 6642 memset(modepage_info, 0, sizeof(*modepage_info)); 6643 6644 len_left = param_len - header_size - bd_len; 6645 len_used = header_size + bd_len; 6646 6647 modepage_info->header.len_left = len_left; 6648 modepage_info->header.len_used = len_used; 6649 6650 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6651} 6652 6653int 6654ctl_mode_sense(struct ctl_scsiio *ctsio) 6655{ 6656 struct ctl_lun *lun; 6657 int pc, page_code, dbd, llba, subpage; 6658 int alloc_len, page_len, header_len, total_len; 6659 struct scsi_mode_block_descr *block_desc; 6660 struct ctl_page_index *page_index; 6661 int control_dev; 6662 6663 dbd = 0; 6664 llba = 0; 6665 block_desc = NULL; 6666 page_index = NULL; 6667 6668 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6669 6670 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6671 6672 if (lun->be_lun->lun_type != T_DIRECT) 6673 control_dev = 1; 6674 else 6675 control_dev = 0; 6676 6677 if (lun->flags & CTL_LUN_PR_RESERVED) { 6678 uint32_t residx; 6679 6680 /* 6681 * XXX KDM need a lock here. 6682 */ 6683 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 6684 if ((lun->res_type == SPR_TYPE_EX_AC 6685 && residx != lun->pr_res_idx) 6686 || ((lun->res_type == SPR_TYPE_EX_AC_RO 6687 || lun->res_type == SPR_TYPE_EX_AC_AR) 6688 && !lun->per_res[residx].registered)) { 6689 ctl_set_reservation_conflict(ctsio); 6690 ctl_done((union ctl_io *)ctsio); 6691 return (CTL_RETVAL_COMPLETE); 6692 } 6693 } 6694 6695 switch (ctsio->cdb[0]) { 6696 case MODE_SENSE_6: { 6697 struct scsi_mode_sense_6 *cdb; 6698 6699 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6700 6701 header_len = sizeof(struct scsi_mode_hdr_6); 6702 if (cdb->byte2 & SMS_DBD) 6703 dbd = 1; 6704 else 6705 header_len += sizeof(struct scsi_mode_block_descr); 6706 6707 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6708 page_code = cdb->page & SMS_PAGE_CODE; 6709 subpage = cdb->subpage; 6710 alloc_len = cdb->length; 6711 break; 6712 } 6713 case MODE_SENSE_10: { 6714 struct scsi_mode_sense_10 *cdb; 6715 6716 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6717 6718 header_len = sizeof(struct scsi_mode_hdr_10); 6719 6720 if (cdb->byte2 & SMS_DBD) 6721 dbd = 1; 6722 else 6723 header_len += sizeof(struct scsi_mode_block_descr); 6724 if (cdb->byte2 & SMS10_LLBAA) 6725 llba = 1; 6726 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6727 page_code = cdb->page & SMS_PAGE_CODE; 6728 subpage = cdb->subpage; 6729 alloc_len = scsi_2btoul(cdb->length); 6730 break; 6731 } 6732 default: 6733 ctl_set_invalid_opcode(ctsio); 6734 ctl_done((union ctl_io *)ctsio); 6735 return (CTL_RETVAL_COMPLETE); 6736 break; /* NOTREACHED */ 6737 } 6738 6739 /* 6740 * We have to make a first pass through to calculate the size of 6741 * the pages that match the user's query. Then we allocate enough 6742 * memory to hold it, and actually copy the data into the buffer. 6743 */ 6744 switch (page_code) { 6745 case SMS_ALL_PAGES_PAGE: { 6746 int i; 6747 6748 page_len = 0; 6749 6750 /* 6751 * At the moment, values other than 0 and 0xff here are 6752 * reserved according to SPC-3. 6753 */ 6754 if ((subpage != SMS_SUBPAGE_PAGE_0) 6755 && (subpage != SMS_SUBPAGE_ALL)) { 6756 ctl_set_invalid_field(ctsio, 6757 /*sks_valid*/ 1, 6758 /*command*/ 1, 6759 /*field*/ 3, 6760 /*bit_valid*/ 0, 6761 /*bit*/ 0); 6762 ctl_done((union ctl_io *)ctsio); 6763 return (CTL_RETVAL_COMPLETE); 6764 } 6765 6766 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6767 if ((control_dev != 0) 6768 && (lun->mode_pages.index[i].page_flags & 6769 CTL_PAGE_FLAG_DISK_ONLY)) 6770 continue; 6771 6772 /* 6773 * We don't use this subpage if the user didn't 6774 * request all subpages. 6775 */ 6776 if ((lun->mode_pages.index[i].subpage != 0) 6777 && (subpage == SMS_SUBPAGE_PAGE_0)) 6778 continue; 6779 6780#if 0 6781 printf("found page %#x len %d\n", 6782 lun->mode_pages.index[i].page_code & 6783 SMPH_PC_MASK, 6784 lun->mode_pages.index[i].page_len); 6785#endif 6786 page_len += lun->mode_pages.index[i].page_len; 6787 } 6788 break; 6789 } 6790 default: { 6791 int i; 6792 6793 page_len = 0; 6794 6795 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6796 /* Look for the right page code */ 6797 if ((lun->mode_pages.index[i].page_code & 6798 SMPH_PC_MASK) != page_code) 6799 continue; 6800 6801 /* Look for the right subpage or the subpage wildcard*/ 6802 if ((lun->mode_pages.index[i].subpage != subpage) 6803 && (subpage != SMS_SUBPAGE_ALL)) 6804 continue; 6805 6806 /* Make sure the page is supported for this dev type */ 6807 if ((control_dev != 0) 6808 && (lun->mode_pages.index[i].page_flags & 6809 CTL_PAGE_FLAG_DISK_ONLY)) 6810 continue; 6811 6812#if 0 6813 printf("found page %#x len %d\n", 6814 lun->mode_pages.index[i].page_code & 6815 SMPH_PC_MASK, 6816 lun->mode_pages.index[i].page_len); 6817#endif 6818 6819 page_len += lun->mode_pages.index[i].page_len; 6820 } 6821 6822 if (page_len == 0) { 6823 ctl_set_invalid_field(ctsio, 6824 /*sks_valid*/ 1, 6825 /*command*/ 1, 6826 /*field*/ 2, 6827 /*bit_valid*/ 1, 6828 /*bit*/ 5); 6829 ctl_done((union ctl_io *)ctsio); 6830 return (CTL_RETVAL_COMPLETE); 6831 } 6832 break; 6833 } 6834 } 6835 6836 total_len = header_len + page_len; 6837#if 0 6838 printf("header_len = %d, page_len = %d, total_len = %d\n", 6839 header_len, page_len, total_len); 6840#endif 6841 6842 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6843 ctsio->kern_sg_entries = 0; 6844 ctsio->kern_data_resid = 0; 6845 ctsio->kern_rel_offset = 0; 6846 if (total_len < alloc_len) { 6847 ctsio->residual = alloc_len - total_len; 6848 ctsio->kern_data_len = total_len; 6849 ctsio->kern_total_len = total_len; 6850 } else { 6851 ctsio->residual = 0; 6852 ctsio->kern_data_len = alloc_len; 6853 ctsio->kern_total_len = alloc_len; 6854 } 6855 6856 switch (ctsio->cdb[0]) { 6857 case MODE_SENSE_6: { 6858 struct scsi_mode_hdr_6 *header; 6859 6860 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6861 6862 header->datalen = ctl_min(total_len - 1, 254); 6863 6864 if (dbd) 6865 header->block_descr_len = 0; 6866 else 6867 header->block_descr_len = 6868 sizeof(struct scsi_mode_block_descr); 6869 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6870 break; 6871 } 6872 case MODE_SENSE_10: { 6873 struct scsi_mode_hdr_10 *header; 6874 int datalen; 6875 6876 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6877 6878 datalen = ctl_min(total_len - 2, 65533); 6879 scsi_ulto2b(datalen, header->datalen); 6880 if (dbd) 6881 scsi_ulto2b(0, header->block_descr_len); 6882 else 6883 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6884 header->block_descr_len); 6885 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6886 break; 6887 } 6888 default: 6889 panic("invalid CDB type %#x", ctsio->cdb[0]); 6890 break; /* NOTREACHED */ 6891 } 6892 6893 /* 6894 * If we've got a disk, use its blocksize in the block 6895 * descriptor. Otherwise, just set it to 0. 6896 */ 6897 if (dbd == 0) { 6898 if (control_dev != 0) 6899 scsi_ulto3b(lun->be_lun->blocksize, 6900 block_desc->block_len); 6901 else 6902 scsi_ulto3b(0, block_desc->block_len); 6903 } 6904 6905 switch (page_code) { 6906 case SMS_ALL_PAGES_PAGE: { 6907 int i, data_used; 6908 6909 data_used = header_len; 6910 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6911 struct ctl_page_index *page_index; 6912 6913 page_index = &lun->mode_pages.index[i]; 6914 6915 if ((control_dev != 0) 6916 && (page_index->page_flags & 6917 CTL_PAGE_FLAG_DISK_ONLY)) 6918 continue; 6919 6920 /* 6921 * We don't use this subpage if the user didn't 6922 * request all subpages. We already checked (above) 6923 * to make sure the user only specified a subpage 6924 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6925 */ 6926 if ((page_index->subpage != 0) 6927 && (subpage == SMS_SUBPAGE_PAGE_0)) 6928 continue; 6929 6930 /* 6931 * Call the handler, if it exists, to update the 6932 * page to the latest values. 6933 */ 6934 if (page_index->sense_handler != NULL) 6935 page_index->sense_handler(ctsio, page_index,pc); 6936 6937 memcpy(ctsio->kern_data_ptr + data_used, 6938 page_index->page_data + 6939 (page_index->page_len * pc), 6940 page_index->page_len); 6941 data_used += page_index->page_len; 6942 } 6943 break; 6944 } 6945 default: { 6946 int i, data_used; 6947 6948 data_used = header_len; 6949 6950 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6951 struct ctl_page_index *page_index; 6952 6953 page_index = &lun->mode_pages.index[i]; 6954 6955 /* Look for the right page code */ 6956 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6957 continue; 6958 6959 /* Look for the right subpage or the subpage wildcard*/ 6960 if ((page_index->subpage != subpage) 6961 && (subpage != SMS_SUBPAGE_ALL)) 6962 continue; 6963 6964 /* Make sure the page is supported for this dev type */ 6965 if ((control_dev != 0) 6966 && (page_index->page_flags & 6967 CTL_PAGE_FLAG_DISK_ONLY)) 6968 continue; 6969 6970 /* 6971 * Call the handler, if it exists, to update the 6972 * page to the latest values. 6973 */ 6974 if (page_index->sense_handler != NULL) 6975 page_index->sense_handler(ctsio, page_index,pc); 6976 6977 memcpy(ctsio->kern_data_ptr + data_used, 6978 page_index->page_data + 6979 (page_index->page_len * pc), 6980 page_index->page_len); 6981 data_used += page_index->page_len; 6982 } 6983 break; 6984 } 6985 } 6986 6987 ctsio->scsi_status = SCSI_STATUS_OK; 6988 6989 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6990 ctsio->be_move_done = ctl_config_move_done; 6991 ctl_datamove((union ctl_io *)ctsio); 6992 6993 return (CTL_RETVAL_COMPLETE); 6994} 6995 6996int 6997ctl_read_capacity(struct ctl_scsiio *ctsio) 6998{ 6999 struct scsi_read_capacity *cdb; 7000 struct scsi_read_capacity_data *data; 7001 struct ctl_lun *lun; 7002 uint32_t lba; 7003 7004 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 7005 7006 cdb = (struct scsi_read_capacity *)ctsio->cdb; 7007 7008 lba = scsi_4btoul(cdb->addr); 7009 if (((cdb->pmi & SRC_PMI) == 0) 7010 && (lba != 0)) { 7011 ctl_set_invalid_field(/*ctsio*/ ctsio, 7012 /*sks_valid*/ 1, 7013 /*command*/ 1, 7014 /*field*/ 2, 7015 /*bit_valid*/ 0, 7016 /*bit*/ 0); 7017 ctl_done((union ctl_io *)ctsio); 7018 return (CTL_RETVAL_COMPLETE); 7019 } 7020 7021 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7022 7023 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7024 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 7025 ctsio->residual = 0; 7026 ctsio->kern_data_len = sizeof(*data); 7027 ctsio->kern_total_len = sizeof(*data); 7028 ctsio->kern_data_resid = 0; 7029 ctsio->kern_rel_offset = 0; 7030 ctsio->kern_sg_entries = 0; 7031 7032 /* 7033 * If the maximum LBA is greater than 0xfffffffe, the user must 7034 * issue a SERVICE ACTION IN (16) command, with the read capacity 7035 * serivce action set. 7036 */ 7037 if (lun->be_lun->maxlba > 0xfffffffe) 7038 scsi_ulto4b(0xffffffff, data->addr); 7039 else 7040 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 7041 7042 /* 7043 * XXX KDM this may not be 512 bytes... 7044 */ 7045 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7046 7047 ctsio->scsi_status = SCSI_STATUS_OK; 7048 7049 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7050 ctsio->be_move_done = ctl_config_move_done; 7051 ctl_datamove((union ctl_io *)ctsio); 7052 7053 return (CTL_RETVAL_COMPLETE); 7054} 7055 7056static int 7057ctl_read_capacity_16(struct ctl_scsiio *ctsio) 7058{ 7059 struct scsi_read_capacity_16 *cdb; 7060 struct scsi_read_capacity_data_long *data; 7061 struct ctl_lun *lun; 7062 uint64_t lba; 7063 uint32_t alloc_len; 7064 7065 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 7066 7067 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 7068 7069 alloc_len = scsi_4btoul(cdb->alloc_len); 7070 lba = scsi_8btou64(cdb->addr); 7071 7072 if ((cdb->reladr & SRC16_PMI) 7073 && (lba != 0)) { 7074 ctl_set_invalid_field(/*ctsio*/ ctsio, 7075 /*sks_valid*/ 1, 7076 /*command*/ 1, 7077 /*field*/ 2, 7078 /*bit_valid*/ 0, 7079 /*bit*/ 0); 7080 ctl_done((union ctl_io *)ctsio); 7081 return (CTL_RETVAL_COMPLETE); 7082 } 7083 7084 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7085 7086 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7087 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 7088 7089 if (sizeof(*data) < alloc_len) { 7090 ctsio->residual = alloc_len - sizeof(*data); 7091 ctsio->kern_data_len = sizeof(*data); 7092 ctsio->kern_total_len = sizeof(*data); 7093 } else { 7094 ctsio->residual = 0; 7095 ctsio->kern_data_len = alloc_len; 7096 ctsio->kern_total_len = alloc_len; 7097 } 7098 ctsio->kern_data_resid = 0; 7099 ctsio->kern_rel_offset = 0; 7100 ctsio->kern_sg_entries = 0; 7101 7102 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7103 /* XXX KDM this may not be 512 bytes... */ 7104 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7105 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7106 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7107 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7108 data->lalba_lbp[0] |= SRC16_LBPME; 7109 7110 ctsio->scsi_status = SCSI_STATUS_OK; 7111 7112 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7113 ctsio->be_move_done = ctl_config_move_done; 7114 ctl_datamove((union ctl_io *)ctsio); 7115 7116 return (CTL_RETVAL_COMPLETE); 7117} 7118 7119int 7120ctl_service_action_in(struct ctl_scsiio *ctsio) 7121{ 7122 struct scsi_service_action_in *cdb; 7123 int retval; 7124 7125 CTL_DEBUG_PRINT(("ctl_service_action_in\n")); 7126 7127 cdb = (struct scsi_service_action_in *)ctsio->cdb; 7128 7129 retval = CTL_RETVAL_COMPLETE; 7130 7131 switch (cdb->service_action) { 7132 case SRC16_SERVICE_ACTION: 7133 retval = ctl_read_capacity_16(ctsio); 7134 break; 7135 default: 7136 ctl_set_invalid_field(/*ctsio*/ ctsio, 7137 /*sks_valid*/ 1, 7138 /*command*/ 1, 7139 /*field*/ 1, 7140 /*bit_valid*/ 1, 7141 /*bit*/ 4); 7142 ctl_done((union ctl_io *)ctsio); 7143 break; 7144 } 7145 7146 return (retval); 7147} 7148 7149int 7150ctl_maintenance_in(struct ctl_scsiio *ctsio) 7151{ 7152 struct scsi_maintenance_in *cdb; 7153 int retval; 7154 int alloc_len, total_len = 0; 7155 int num_target_port_groups, single; 7156 struct ctl_lun *lun; 7157 struct ctl_softc *softc; 7158 struct scsi_target_group_data *rtg_ptr; 7159 struct scsi_target_port_group_descriptor *tpg_desc_ptr1, *tpg_desc_ptr2; 7160 struct scsi_target_port_descriptor *tp_desc_ptr1_1, *tp_desc_ptr1_2, 7161 *tp_desc_ptr2_1, *tp_desc_ptr2_2; 7162 7163 CTL_DEBUG_PRINT(("ctl_maintenance_in\n")); 7164 7165 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 7166 softc = control_softc; 7167 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7168 7169 retval = CTL_RETVAL_COMPLETE; 7170 7171 if ((cdb->byte2 & SERVICE_ACTION_MASK) != SA_RPRT_TRGT_GRP) { 7172 ctl_set_invalid_field(/*ctsio*/ ctsio, 7173 /*sks_valid*/ 1, 7174 /*command*/ 1, 7175 /*field*/ 1, 7176 /*bit_valid*/ 1, 7177 /*bit*/ 4); 7178 ctl_done((union ctl_io *)ctsio); 7179 return(retval); 7180 } 7181 7182 single = ctl_is_single; 7183 if (single) 7184 num_target_port_groups = NUM_TARGET_PORT_GROUPS - 1; 7185 else 7186 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7187 7188 total_len = sizeof(struct scsi_target_group_data) + 7189 sizeof(struct scsi_target_port_group_descriptor) * 7190 num_target_port_groups + 7191 sizeof(struct scsi_target_port_descriptor) * 7192 NUM_PORTS_PER_GRP * num_target_port_groups; 7193 7194 alloc_len = scsi_4btoul(cdb->length); 7195 7196 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7197 7198 ctsio->kern_sg_entries = 0; 7199 7200 if (total_len < alloc_len) { 7201 ctsio->residual = alloc_len - total_len; 7202 ctsio->kern_data_len = total_len; 7203 ctsio->kern_total_len = total_len; 7204 } else { 7205 ctsio->residual = 0; 7206 ctsio->kern_data_len = alloc_len; 7207 ctsio->kern_total_len = alloc_len; 7208 } 7209 ctsio->kern_data_resid = 0; 7210 ctsio->kern_rel_offset = 0; 7211 7212 rtg_ptr = (struct scsi_target_group_data *)ctsio->kern_data_ptr; 7213 7214 tpg_desc_ptr1 = &rtg_ptr->groups[0]; 7215 tp_desc_ptr1_1 = &tpg_desc_ptr1->descriptors[0]; 7216 tp_desc_ptr1_2 = (struct scsi_target_port_descriptor *) 7217 &tp_desc_ptr1_1->desc_list[0]; 7218 7219 if (single == 0) { 7220 tpg_desc_ptr2 = (struct scsi_target_port_group_descriptor *) 7221 &tp_desc_ptr1_2->desc_list[0]; 7222 tp_desc_ptr2_1 = &tpg_desc_ptr2->descriptors[0]; 7223 tp_desc_ptr2_2 = (struct scsi_target_port_descriptor *) 7224 &tp_desc_ptr2_1->desc_list[0]; 7225 } else { 7226 tpg_desc_ptr2 = NULL; 7227 tp_desc_ptr2_1 = NULL; 7228 tp_desc_ptr2_2 = NULL; 7229 } 7230 7231 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7232 if (single == 0) { 7233 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7234 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7235 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7236 tpg_desc_ptr2->pref_state = 7237 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7238 } else { 7239 tpg_desc_ptr1->pref_state = 7240 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7241 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7242 } 7243 } else { 7244 if (lun->flags & CTL_LUN_PRIMARY_SC) { 7245 tpg_desc_ptr1->pref_state = 7246 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7247 tpg_desc_ptr2->pref_state = TPG_PRIMARY; 7248 } else { 7249 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7250 tpg_desc_ptr2->pref_state = 7251 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7252 } 7253 } 7254 } else { 7255 tpg_desc_ptr1->pref_state = TPG_PRIMARY; 7256 } 7257 tpg_desc_ptr1->support = 0; 7258 tpg_desc_ptr1->target_port_group[1] = 1; 7259 tpg_desc_ptr1->status = TPG_IMPLICIT; 7260 tpg_desc_ptr1->target_port_count= NUM_PORTS_PER_GRP; 7261 7262 if (single == 0) { 7263 tpg_desc_ptr2->support = 0; 7264 tpg_desc_ptr2->target_port_group[1] = 2; 7265 tpg_desc_ptr2->status = TPG_IMPLICIT; 7266 tpg_desc_ptr2->target_port_count = NUM_PORTS_PER_GRP; 7267 7268 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7269 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7270 7271 tp_desc_ptr2_1->relative_target_port_identifier[1] = 9; 7272 tp_desc_ptr2_2->relative_target_port_identifier[1] = 10; 7273 } else { 7274 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS) { 7275 tp_desc_ptr1_1->relative_target_port_identifier[1] = 1; 7276 tp_desc_ptr1_2->relative_target_port_identifier[1] = 2; 7277 } else { 7278 tp_desc_ptr1_1->relative_target_port_identifier[1] = 9; 7279 tp_desc_ptr1_2->relative_target_port_identifier[1] = 10; 7280 } 7281 } 7282 7283 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7284 ctsio->be_move_done = ctl_config_move_done; 7285 7286 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7287 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7288 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7289 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7290 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7291 7292 ctl_datamove((union ctl_io *)ctsio); 7293 return(retval); 7294} 7295 7296int 7297ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7298{ 7299 struct scsi_per_res_in *cdb; 7300 int alloc_len, total_len = 0; 7301 /* struct scsi_per_res_in_rsrv in_data; */ 7302 struct ctl_lun *lun; 7303 struct ctl_softc *softc; 7304 7305 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7306 7307 softc = control_softc; 7308 7309 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7310 7311 alloc_len = scsi_2btoul(cdb->length); 7312 7313 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7314 7315retry: 7316 mtx_lock(&lun->lun_lock); 7317 switch (cdb->action) { 7318 case SPRI_RK: /* read keys */ 7319 total_len = sizeof(struct scsi_per_res_in_keys) + 7320 lun->pr_key_count * 7321 sizeof(struct scsi_per_res_key); 7322 break; 7323 case SPRI_RR: /* read reservation */ 7324 if (lun->flags & CTL_LUN_PR_RESERVED) 7325 total_len = sizeof(struct scsi_per_res_in_rsrv); 7326 else 7327 total_len = sizeof(struct scsi_per_res_in_header); 7328 break; 7329 case SPRI_RC: /* report capabilities */ 7330 total_len = sizeof(struct scsi_per_res_cap); 7331 break; 7332 case SPRI_RS: /* read full status */ 7333 default: 7334 mtx_unlock(&lun->lun_lock); 7335 ctl_set_invalid_field(ctsio, 7336 /*sks_valid*/ 1, 7337 /*command*/ 1, 7338 /*field*/ 1, 7339 /*bit_valid*/ 1, 7340 /*bit*/ 0); 7341 ctl_done((union ctl_io *)ctsio); 7342 return (CTL_RETVAL_COMPLETE); 7343 break; /* NOTREACHED */ 7344 } 7345 mtx_unlock(&lun->lun_lock); 7346 7347 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7348 7349 if (total_len < alloc_len) { 7350 ctsio->residual = alloc_len - total_len; 7351 ctsio->kern_data_len = total_len; 7352 ctsio->kern_total_len = total_len; 7353 } else { 7354 ctsio->residual = 0; 7355 ctsio->kern_data_len = alloc_len; 7356 ctsio->kern_total_len = alloc_len; 7357 } 7358 7359 ctsio->kern_data_resid = 0; 7360 ctsio->kern_rel_offset = 0; 7361 ctsio->kern_sg_entries = 0; 7362 7363 mtx_lock(&lun->lun_lock); 7364 switch (cdb->action) { 7365 case SPRI_RK: { // read keys 7366 struct scsi_per_res_in_keys *res_keys; 7367 int i, key_count; 7368 7369 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7370 7371 /* 7372 * We had to drop the lock to allocate our buffer, which 7373 * leaves time for someone to come in with another 7374 * persistent reservation. (That is unlikely, though, 7375 * since this should be the only persistent reservation 7376 * command active right now.) 7377 */ 7378 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7379 (lun->pr_key_count * 7380 sizeof(struct scsi_per_res_key)))){ 7381 mtx_unlock(&lun->lun_lock); 7382 free(ctsio->kern_data_ptr, M_CTL); 7383 printf("%s: reservation length changed, retrying\n", 7384 __func__); 7385 goto retry; 7386 } 7387 7388 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7389 7390 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7391 lun->pr_key_count, res_keys->header.length); 7392 7393 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7394 if (!lun->per_res[i].registered) 7395 continue; 7396 7397 /* 7398 * We used lun->pr_key_count to calculate the 7399 * size to allocate. If it turns out the number of 7400 * initiators with the registered flag set is 7401 * larger than that (i.e. they haven't been kept in 7402 * sync), we've got a problem. 7403 */ 7404 if (key_count >= lun->pr_key_count) { 7405#ifdef NEEDTOPORT 7406 csevent_log(CSC_CTL | CSC_SHELF_SW | 7407 CTL_PR_ERROR, 7408 csevent_LogType_Fault, 7409 csevent_AlertLevel_Yellow, 7410 csevent_FRU_ShelfController, 7411 csevent_FRU_Firmware, 7412 csevent_FRU_Unknown, 7413 "registered keys %d >= key " 7414 "count %d", key_count, 7415 lun->pr_key_count); 7416#endif 7417 key_count++; 7418 continue; 7419 } 7420 memcpy(res_keys->keys[key_count].key, 7421 lun->per_res[i].res_key.key, 7422 ctl_min(sizeof(res_keys->keys[key_count].key), 7423 sizeof(lun->per_res[i].res_key))); 7424 key_count++; 7425 } 7426 break; 7427 } 7428 case SPRI_RR: { // read reservation 7429 struct scsi_per_res_in_rsrv *res; 7430 int tmp_len, header_only; 7431 7432 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7433 7434 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7435 7436 if (lun->flags & CTL_LUN_PR_RESERVED) 7437 { 7438 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7439 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7440 res->header.length); 7441 header_only = 0; 7442 } else { 7443 tmp_len = sizeof(struct scsi_per_res_in_header); 7444 scsi_ulto4b(0, res->header.length); 7445 header_only = 1; 7446 } 7447 7448 /* 7449 * We had to drop the lock to allocate our buffer, which 7450 * leaves time for someone to come in with another 7451 * persistent reservation. (That is unlikely, though, 7452 * since this should be the only persistent reservation 7453 * command active right now.) 7454 */ 7455 if (tmp_len != total_len) { 7456 mtx_unlock(&lun->lun_lock); 7457 free(ctsio->kern_data_ptr, M_CTL); 7458 printf("%s: reservation status changed, retrying\n", 7459 __func__); 7460 goto retry; 7461 } 7462 7463 /* 7464 * No reservation held, so we're done. 7465 */ 7466 if (header_only != 0) 7467 break; 7468 7469 /* 7470 * If the registration is an All Registrants type, the key 7471 * is 0, since it doesn't really matter. 7472 */ 7473 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7474 memcpy(res->data.reservation, 7475 &lun->per_res[lun->pr_res_idx].res_key, 7476 sizeof(struct scsi_per_res_key)); 7477 } 7478 res->data.scopetype = lun->res_type; 7479 break; 7480 } 7481 case SPRI_RC: //report capabilities 7482 { 7483 struct scsi_per_res_cap *res_cap; 7484 uint16_t type_mask; 7485 7486 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7487 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7488 res_cap->flags2 |= SPRI_TMV | SPRI_ALLOW_3; 7489 type_mask = SPRI_TM_WR_EX_AR | 7490 SPRI_TM_EX_AC_RO | 7491 SPRI_TM_WR_EX_RO | 7492 SPRI_TM_EX_AC | 7493 SPRI_TM_WR_EX | 7494 SPRI_TM_EX_AC_AR; 7495 scsi_ulto2b(type_mask, res_cap->type_mask); 7496 break; 7497 } 7498 case SPRI_RS: //read full status 7499 default: 7500 /* 7501 * This is a bug, because we just checked for this above, 7502 * and should have returned an error. 7503 */ 7504 panic("Invalid PR type %x", cdb->action); 7505 break; /* NOTREACHED */ 7506 } 7507 mtx_unlock(&lun->lun_lock); 7508 7509 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7510 ctsio->be_move_done = ctl_config_move_done; 7511 7512 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7513 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7514 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7515 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7516 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7517 7518 ctl_datamove((union ctl_io *)ctsio); 7519 7520 return (CTL_RETVAL_COMPLETE); 7521} 7522 7523/* 7524 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7525 * it should return. 7526 */ 7527static int 7528ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7529 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7530 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7531 struct scsi_per_res_out_parms* param) 7532{ 7533 union ctl_ha_msg persis_io; 7534 int retval, i; 7535 int isc_retval; 7536 7537 retval = 0; 7538 7539 mtx_lock(&lun->lun_lock); 7540 if (sa_res_key == 0) { 7541 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7542 /* validate scope and type */ 7543 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7544 SPR_LU_SCOPE) { 7545 mtx_unlock(&lun->lun_lock); 7546 ctl_set_invalid_field(/*ctsio*/ ctsio, 7547 /*sks_valid*/ 1, 7548 /*command*/ 1, 7549 /*field*/ 2, 7550 /*bit_valid*/ 1, 7551 /*bit*/ 4); 7552 ctl_done((union ctl_io *)ctsio); 7553 return (1); 7554 } 7555 7556 if (type>8 || type==2 || type==4 || type==0) { 7557 mtx_unlock(&lun->lun_lock); 7558 ctl_set_invalid_field(/*ctsio*/ ctsio, 7559 /*sks_valid*/ 1, 7560 /*command*/ 1, 7561 /*field*/ 2, 7562 /*bit_valid*/ 1, 7563 /*bit*/ 0); 7564 ctl_done((union ctl_io *)ctsio); 7565 return (1); 7566 } 7567 7568 /* temporarily unregister this nexus */ 7569 lun->per_res[residx].registered = 0; 7570 7571 /* 7572 * Unregister everybody else and build UA for 7573 * them 7574 */ 7575 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7576 if (lun->per_res[i].registered == 0) 7577 continue; 7578 7579 if (!persis_offset 7580 && i <CTL_MAX_INITIATORS) 7581 lun->pending_sense[i].ua_pending |= 7582 CTL_UA_REG_PREEMPT; 7583 else if (persis_offset 7584 && i >= persis_offset) 7585 lun->pending_sense[i-persis_offset 7586 ].ua_pending |= 7587 CTL_UA_REG_PREEMPT; 7588 lun->per_res[i].registered = 0; 7589 memset(&lun->per_res[i].res_key, 0, 7590 sizeof(struct scsi_per_res_key)); 7591 } 7592 lun->per_res[residx].registered = 1; 7593 lun->pr_key_count = 1; 7594 lun->res_type = type; 7595 if (lun->res_type != SPR_TYPE_WR_EX_AR 7596 && lun->res_type != SPR_TYPE_EX_AC_AR) 7597 lun->pr_res_idx = residx; 7598 7599 /* send msg to other side */ 7600 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7601 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7602 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7603 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7604 persis_io.pr.pr_info.res_type = type; 7605 memcpy(persis_io.pr.pr_info.sa_res_key, 7606 param->serv_act_res_key, 7607 sizeof(param->serv_act_res_key)); 7608 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7609 &persis_io, sizeof(persis_io), 0)) > 7610 CTL_HA_STATUS_SUCCESS) { 7611 printf("CTL:Persis Out error returned " 7612 "from ctl_ha_msg_send %d\n", 7613 isc_retval); 7614 } 7615 } else { 7616 /* not all registrants */ 7617 mtx_unlock(&lun->lun_lock); 7618 free(ctsio->kern_data_ptr, M_CTL); 7619 ctl_set_invalid_field(ctsio, 7620 /*sks_valid*/ 1, 7621 /*command*/ 0, 7622 /*field*/ 8, 7623 /*bit_valid*/ 0, 7624 /*bit*/ 0); 7625 ctl_done((union ctl_io *)ctsio); 7626 return (1); 7627 } 7628 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7629 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7630 int found = 0; 7631 7632 if (res_key == sa_res_key) { 7633 /* special case */ 7634 /* 7635 * The spec implies this is not good but doesn't 7636 * say what to do. There are two choices either 7637 * generate a res conflict or check condition 7638 * with illegal field in parameter data. Since 7639 * that is what is done when the sa_res_key is 7640 * zero I'll take that approach since this has 7641 * to do with the sa_res_key. 7642 */ 7643 mtx_unlock(&lun->lun_lock); 7644 free(ctsio->kern_data_ptr, M_CTL); 7645 ctl_set_invalid_field(ctsio, 7646 /*sks_valid*/ 1, 7647 /*command*/ 0, 7648 /*field*/ 8, 7649 /*bit_valid*/ 0, 7650 /*bit*/ 0); 7651 ctl_done((union ctl_io *)ctsio); 7652 return (1); 7653 } 7654 7655 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7656 if (lun->per_res[i].registered 7657 && memcmp(param->serv_act_res_key, 7658 lun->per_res[i].res_key.key, 7659 sizeof(struct scsi_per_res_key)) != 0) 7660 continue; 7661 7662 found = 1; 7663 lun->per_res[i].registered = 0; 7664 memset(&lun->per_res[i].res_key, 0, 7665 sizeof(struct scsi_per_res_key)); 7666 lun->pr_key_count--; 7667 7668 if (!persis_offset 7669 && i < CTL_MAX_INITIATORS) 7670 lun->pending_sense[i].ua_pending |= 7671 CTL_UA_REG_PREEMPT; 7672 else if (persis_offset 7673 && i >= persis_offset) 7674 lun->pending_sense[i-persis_offset].ua_pending|= 7675 CTL_UA_REG_PREEMPT; 7676 } 7677 if (!found) { 7678 mtx_unlock(&lun->lun_lock); 7679 free(ctsio->kern_data_ptr, M_CTL); 7680 ctl_set_reservation_conflict(ctsio); 7681 ctl_done((union ctl_io *)ctsio); 7682 return (CTL_RETVAL_COMPLETE); 7683 } 7684 /* send msg to other side */ 7685 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7686 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7687 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7688 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7689 persis_io.pr.pr_info.res_type = type; 7690 memcpy(persis_io.pr.pr_info.sa_res_key, 7691 param->serv_act_res_key, 7692 sizeof(param->serv_act_res_key)); 7693 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7694 &persis_io, sizeof(persis_io), 0)) > 7695 CTL_HA_STATUS_SUCCESS) { 7696 printf("CTL:Persis Out error returned from " 7697 "ctl_ha_msg_send %d\n", isc_retval); 7698 } 7699 } else { 7700 /* Reserved but not all registrants */ 7701 /* sa_res_key is res holder */ 7702 if (memcmp(param->serv_act_res_key, 7703 lun->per_res[lun->pr_res_idx].res_key.key, 7704 sizeof(struct scsi_per_res_key)) == 0) { 7705 /* validate scope and type */ 7706 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7707 SPR_LU_SCOPE) { 7708 mtx_unlock(&lun->lun_lock); 7709 ctl_set_invalid_field(/*ctsio*/ ctsio, 7710 /*sks_valid*/ 1, 7711 /*command*/ 1, 7712 /*field*/ 2, 7713 /*bit_valid*/ 1, 7714 /*bit*/ 4); 7715 ctl_done((union ctl_io *)ctsio); 7716 return (1); 7717 } 7718 7719 if (type>8 || type==2 || type==4 || type==0) { 7720 mtx_unlock(&lun->lun_lock); 7721 ctl_set_invalid_field(/*ctsio*/ ctsio, 7722 /*sks_valid*/ 1, 7723 /*command*/ 1, 7724 /*field*/ 2, 7725 /*bit_valid*/ 1, 7726 /*bit*/ 0); 7727 ctl_done((union ctl_io *)ctsio); 7728 return (1); 7729 } 7730 7731 /* 7732 * Do the following: 7733 * if sa_res_key != res_key remove all 7734 * registrants w/sa_res_key and generate UA 7735 * for these registrants(Registrations 7736 * Preempted) if it wasn't an exclusive 7737 * reservation generate UA(Reservations 7738 * Preempted) for all other registered nexuses 7739 * if the type has changed. Establish the new 7740 * reservation and holder. If res_key and 7741 * sa_res_key are the same do the above 7742 * except don't unregister the res holder. 7743 */ 7744 7745 /* 7746 * Temporarily unregister so it won't get 7747 * removed or UA generated 7748 */ 7749 lun->per_res[residx].registered = 0; 7750 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7751 if (lun->per_res[i].registered == 0) 7752 continue; 7753 7754 if (memcmp(param->serv_act_res_key, 7755 lun->per_res[i].res_key.key, 7756 sizeof(struct scsi_per_res_key)) == 0) { 7757 lun->per_res[i].registered = 0; 7758 memset(&lun->per_res[i].res_key, 7759 0, 7760 sizeof(struct scsi_per_res_key)); 7761 lun->pr_key_count--; 7762 7763 if (!persis_offset 7764 && i < CTL_MAX_INITIATORS) 7765 lun->pending_sense[i 7766 ].ua_pending |= 7767 CTL_UA_REG_PREEMPT; 7768 else if (persis_offset 7769 && i >= persis_offset) 7770 lun->pending_sense[ 7771 i-persis_offset].ua_pending |= 7772 CTL_UA_REG_PREEMPT; 7773 } else if (type != lun->res_type 7774 && (lun->res_type == SPR_TYPE_WR_EX_RO 7775 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 7776 if (!persis_offset 7777 && i < CTL_MAX_INITIATORS) 7778 lun->pending_sense[i 7779 ].ua_pending |= 7780 CTL_UA_RES_RELEASE; 7781 else if (persis_offset 7782 && i >= persis_offset) 7783 lun->pending_sense[ 7784 i-persis_offset 7785 ].ua_pending |= 7786 CTL_UA_RES_RELEASE; 7787 } 7788 } 7789 lun->per_res[residx].registered = 1; 7790 lun->res_type = type; 7791 if (lun->res_type != SPR_TYPE_WR_EX_AR 7792 && lun->res_type != SPR_TYPE_EX_AC_AR) 7793 lun->pr_res_idx = residx; 7794 else 7795 lun->pr_res_idx = 7796 CTL_PR_ALL_REGISTRANTS; 7797 7798 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7799 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7800 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7801 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7802 persis_io.pr.pr_info.res_type = type; 7803 memcpy(persis_io.pr.pr_info.sa_res_key, 7804 param->serv_act_res_key, 7805 sizeof(param->serv_act_res_key)); 7806 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7807 &persis_io, sizeof(persis_io), 0)) > 7808 CTL_HA_STATUS_SUCCESS) { 7809 printf("CTL:Persis Out error returned " 7810 "from ctl_ha_msg_send %d\n", 7811 isc_retval); 7812 } 7813 } else { 7814 /* 7815 * sa_res_key is not the res holder just 7816 * remove registrants 7817 */ 7818 int found=0; 7819 7820 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7821 if (memcmp(param->serv_act_res_key, 7822 lun->per_res[i].res_key.key, 7823 sizeof(struct scsi_per_res_key)) != 0) 7824 continue; 7825 7826 found = 1; 7827 lun->per_res[i].registered = 0; 7828 memset(&lun->per_res[i].res_key, 0, 7829 sizeof(struct scsi_per_res_key)); 7830 lun->pr_key_count--; 7831 7832 if (!persis_offset 7833 && i < CTL_MAX_INITIATORS) 7834 lun->pending_sense[i].ua_pending |= 7835 CTL_UA_REG_PREEMPT; 7836 else if (persis_offset 7837 && i >= persis_offset) 7838 lun->pending_sense[ 7839 i-persis_offset].ua_pending |= 7840 CTL_UA_REG_PREEMPT; 7841 } 7842 7843 if (!found) { 7844 mtx_unlock(&lun->lun_lock); 7845 free(ctsio->kern_data_ptr, M_CTL); 7846 ctl_set_reservation_conflict(ctsio); 7847 ctl_done((union ctl_io *)ctsio); 7848 return (1); 7849 } 7850 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7851 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7852 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7853 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7854 persis_io.pr.pr_info.res_type = type; 7855 memcpy(persis_io.pr.pr_info.sa_res_key, 7856 param->serv_act_res_key, 7857 sizeof(param->serv_act_res_key)); 7858 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7859 &persis_io, sizeof(persis_io), 0)) > 7860 CTL_HA_STATUS_SUCCESS) { 7861 printf("CTL:Persis Out error returned " 7862 "from ctl_ha_msg_send %d\n", 7863 isc_retval); 7864 } 7865 } 7866 } 7867 7868 lun->PRGeneration++; 7869 mtx_unlock(&lun->lun_lock); 7870 7871 return (retval); 7872} 7873 7874static void 7875ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 7876{ 7877 int i; 7878 7879 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7880 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 7881 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 7882 msg->pr.pr_info.sa_res_key, 7883 sizeof(struct scsi_per_res_key)) != 0) { 7884 uint64_t sa_res_key; 7885 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 7886 7887 if (sa_res_key == 0) { 7888 /* temporarily unregister this nexus */ 7889 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7890 7891 /* 7892 * Unregister everybody else and build UA for 7893 * them 7894 */ 7895 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7896 if (lun->per_res[i].registered == 0) 7897 continue; 7898 7899 if (!persis_offset 7900 && i < CTL_MAX_INITIATORS) 7901 lun->pending_sense[i].ua_pending |= 7902 CTL_UA_REG_PREEMPT; 7903 else if (persis_offset && i >= persis_offset) 7904 lun->pending_sense[i - 7905 persis_offset].ua_pending |= 7906 CTL_UA_REG_PREEMPT; 7907 lun->per_res[i].registered = 0; 7908 memset(&lun->per_res[i].res_key, 0, 7909 sizeof(struct scsi_per_res_key)); 7910 } 7911 7912 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7913 lun->pr_key_count = 1; 7914 lun->res_type = msg->pr.pr_info.res_type; 7915 if (lun->res_type != SPR_TYPE_WR_EX_AR 7916 && lun->res_type != SPR_TYPE_EX_AC_AR) 7917 lun->pr_res_idx = msg->pr.pr_info.residx; 7918 } else { 7919 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7920 if (memcmp(msg->pr.pr_info.sa_res_key, 7921 lun->per_res[i].res_key.key, 7922 sizeof(struct scsi_per_res_key)) != 0) 7923 continue; 7924 7925 lun->per_res[i].registered = 0; 7926 memset(&lun->per_res[i].res_key, 0, 7927 sizeof(struct scsi_per_res_key)); 7928 lun->pr_key_count--; 7929 7930 if (!persis_offset 7931 && i < persis_offset) 7932 lun->pending_sense[i].ua_pending |= 7933 CTL_UA_REG_PREEMPT; 7934 else if (persis_offset 7935 && i >= persis_offset) 7936 lun->pending_sense[i - 7937 persis_offset].ua_pending |= 7938 CTL_UA_REG_PREEMPT; 7939 } 7940 } 7941 } else { 7942 /* 7943 * Temporarily unregister so it won't get removed 7944 * or UA generated 7945 */ 7946 lun->per_res[msg->pr.pr_info.residx].registered = 0; 7947 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7948 if (lun->per_res[i].registered == 0) 7949 continue; 7950 7951 if (memcmp(msg->pr.pr_info.sa_res_key, 7952 lun->per_res[i].res_key.key, 7953 sizeof(struct scsi_per_res_key)) == 0) { 7954 lun->per_res[i].registered = 0; 7955 memset(&lun->per_res[i].res_key, 0, 7956 sizeof(struct scsi_per_res_key)); 7957 lun->pr_key_count--; 7958 if (!persis_offset 7959 && i < CTL_MAX_INITIATORS) 7960 lun->pending_sense[i].ua_pending |= 7961 CTL_UA_REG_PREEMPT; 7962 else if (persis_offset 7963 && i >= persis_offset) 7964 lun->pending_sense[i - 7965 persis_offset].ua_pending |= 7966 CTL_UA_REG_PREEMPT; 7967 } else if (msg->pr.pr_info.res_type != lun->res_type 7968 && (lun->res_type == SPR_TYPE_WR_EX_RO 7969 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 7970 if (!persis_offset 7971 && i < persis_offset) 7972 lun->pending_sense[i 7973 ].ua_pending |= 7974 CTL_UA_RES_RELEASE; 7975 else if (persis_offset 7976 && i >= persis_offset) 7977 lun->pending_sense[i - 7978 persis_offset].ua_pending |= 7979 CTL_UA_RES_RELEASE; 7980 } 7981 } 7982 lun->per_res[msg->pr.pr_info.residx].registered = 1; 7983 lun->res_type = msg->pr.pr_info.res_type; 7984 if (lun->res_type != SPR_TYPE_WR_EX_AR 7985 && lun->res_type != SPR_TYPE_EX_AC_AR) 7986 lun->pr_res_idx = msg->pr.pr_info.residx; 7987 else 7988 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 7989 } 7990 lun->PRGeneration++; 7991 7992} 7993 7994 7995int 7996ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 7997{ 7998 int retval; 7999 int isc_retval; 8000 u_int32_t param_len; 8001 struct scsi_per_res_out *cdb; 8002 struct ctl_lun *lun; 8003 struct scsi_per_res_out_parms* param; 8004 struct ctl_softc *softc; 8005 uint32_t residx; 8006 uint64_t res_key, sa_res_key; 8007 uint8_t type; 8008 union ctl_ha_msg persis_io; 8009 int i; 8010 8011 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 8012 8013 retval = CTL_RETVAL_COMPLETE; 8014 8015 softc = control_softc; 8016 8017 cdb = (struct scsi_per_res_out *)ctsio->cdb; 8018 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8019 8020 /* 8021 * We only support whole-LUN scope. The scope & type are ignored for 8022 * register, register and ignore existing key and clear. 8023 * We sometimes ignore scope and type on preempts too!! 8024 * Verify reservation type here as well. 8025 */ 8026 type = cdb->scope_type & SPR_TYPE_MASK; 8027 if ((cdb->action == SPRO_RESERVE) 8028 || (cdb->action == SPRO_RELEASE)) { 8029 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 8030 ctl_set_invalid_field(/*ctsio*/ ctsio, 8031 /*sks_valid*/ 1, 8032 /*command*/ 1, 8033 /*field*/ 2, 8034 /*bit_valid*/ 1, 8035 /*bit*/ 4); 8036 ctl_done((union ctl_io *)ctsio); 8037 return (CTL_RETVAL_COMPLETE); 8038 } 8039 8040 if (type>8 || type==2 || type==4 || type==0) { 8041 ctl_set_invalid_field(/*ctsio*/ ctsio, 8042 /*sks_valid*/ 1, 8043 /*command*/ 1, 8044 /*field*/ 2, 8045 /*bit_valid*/ 1, 8046 /*bit*/ 0); 8047 ctl_done((union ctl_io *)ctsio); 8048 return (CTL_RETVAL_COMPLETE); 8049 } 8050 } 8051 8052 switch (cdb->action & SPRO_ACTION_MASK) { 8053 case SPRO_REGISTER: 8054 case SPRO_RESERVE: 8055 case SPRO_RELEASE: 8056 case SPRO_CLEAR: 8057 case SPRO_PREEMPT: 8058 case SPRO_REG_IGNO: 8059 break; 8060 case SPRO_REG_MOVE: 8061 case SPRO_PRE_ABO: 8062 default: 8063 ctl_set_invalid_field(/*ctsio*/ ctsio, 8064 /*sks_valid*/ 1, 8065 /*command*/ 1, 8066 /*field*/ 1, 8067 /*bit_valid*/ 1, 8068 /*bit*/ 0); 8069 ctl_done((union ctl_io *)ctsio); 8070 return (CTL_RETVAL_COMPLETE); 8071 break; /* NOTREACHED */ 8072 } 8073 8074 param_len = scsi_4btoul(cdb->length); 8075 8076 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 8077 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 8078 ctsio->kern_data_len = param_len; 8079 ctsio->kern_total_len = param_len; 8080 ctsio->kern_data_resid = 0; 8081 ctsio->kern_rel_offset = 0; 8082 ctsio->kern_sg_entries = 0; 8083 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 8084 ctsio->be_move_done = ctl_config_move_done; 8085 ctl_datamove((union ctl_io *)ctsio); 8086 8087 return (CTL_RETVAL_COMPLETE); 8088 } 8089 8090 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 8091 8092 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8093 res_key = scsi_8btou64(param->res_key.key); 8094 sa_res_key = scsi_8btou64(param->serv_act_res_key); 8095 8096 /* 8097 * Validate the reservation key here except for SPRO_REG_IGNO 8098 * This must be done for all other service actions 8099 */ 8100 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8101 mtx_lock(&lun->lun_lock); 8102 if (lun->per_res[residx].registered) { 8103 if (memcmp(param->res_key.key, 8104 lun->per_res[residx].res_key.key, 8105 ctl_min(sizeof(param->res_key), 8106 sizeof(lun->per_res[residx].res_key))) != 0) { 8107 /* 8108 * The current key passed in doesn't match 8109 * the one the initiator previously 8110 * registered. 8111 */ 8112 mtx_unlock(&lun->lun_lock); 8113 free(ctsio->kern_data_ptr, M_CTL); 8114 ctl_set_reservation_conflict(ctsio); 8115 ctl_done((union ctl_io *)ctsio); 8116 return (CTL_RETVAL_COMPLETE); 8117 } 8118 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8119 /* 8120 * We are not registered 8121 */ 8122 mtx_unlock(&lun->lun_lock); 8123 free(ctsio->kern_data_ptr, M_CTL); 8124 ctl_set_reservation_conflict(ctsio); 8125 ctl_done((union ctl_io *)ctsio); 8126 return (CTL_RETVAL_COMPLETE); 8127 } else if (res_key != 0) { 8128 /* 8129 * We are not registered and trying to register but 8130 * the register key isn't zero. 8131 */ 8132 mtx_unlock(&lun->lun_lock); 8133 free(ctsio->kern_data_ptr, M_CTL); 8134 ctl_set_reservation_conflict(ctsio); 8135 ctl_done((union ctl_io *)ctsio); 8136 return (CTL_RETVAL_COMPLETE); 8137 } 8138 mtx_unlock(&lun->lun_lock); 8139 } 8140 8141 switch (cdb->action & SPRO_ACTION_MASK) { 8142 case SPRO_REGISTER: 8143 case SPRO_REG_IGNO: { 8144 8145#if 0 8146 printf("Registration received\n"); 8147#endif 8148 8149 /* 8150 * We don't support any of these options, as we report in 8151 * the read capabilities request (see 8152 * ctl_persistent_reserve_in(), above). 8153 */ 8154 if ((param->flags & SPR_SPEC_I_PT) 8155 || (param->flags & SPR_ALL_TG_PT) 8156 || (param->flags & SPR_APTPL)) { 8157 int bit_ptr; 8158 8159 if (param->flags & SPR_APTPL) 8160 bit_ptr = 0; 8161 else if (param->flags & SPR_ALL_TG_PT) 8162 bit_ptr = 2; 8163 else /* SPR_SPEC_I_PT */ 8164 bit_ptr = 3; 8165 8166 free(ctsio->kern_data_ptr, M_CTL); 8167 ctl_set_invalid_field(ctsio, 8168 /*sks_valid*/ 1, 8169 /*command*/ 0, 8170 /*field*/ 20, 8171 /*bit_valid*/ 1, 8172 /*bit*/ bit_ptr); 8173 ctl_done((union ctl_io *)ctsio); 8174 return (CTL_RETVAL_COMPLETE); 8175 } 8176 8177 mtx_lock(&lun->lun_lock); 8178 8179 /* 8180 * The initiator wants to clear the 8181 * key/unregister. 8182 */ 8183 if (sa_res_key == 0) { 8184 if ((res_key == 0 8185 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8186 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8187 && !lun->per_res[residx].registered)) { 8188 mtx_unlock(&lun->lun_lock); 8189 goto done; 8190 } 8191 8192 lun->per_res[residx].registered = 0; 8193 memset(&lun->per_res[residx].res_key, 8194 0, sizeof(lun->per_res[residx].res_key)); 8195 lun->pr_key_count--; 8196 8197 if (residx == lun->pr_res_idx) { 8198 lun->flags &= ~CTL_LUN_PR_RESERVED; 8199 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8200 8201 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8202 || lun->res_type == SPR_TYPE_EX_AC_RO) 8203 && lun->pr_key_count) { 8204 /* 8205 * If the reservation is a registrants 8206 * only type we need to generate a UA 8207 * for other registered inits. The 8208 * sense code should be RESERVATIONS 8209 * RELEASED 8210 */ 8211 8212 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8213 if (lun->per_res[ 8214 i+persis_offset].registered 8215 == 0) 8216 continue; 8217 lun->pending_sense[i 8218 ].ua_pending |= 8219 CTL_UA_RES_RELEASE; 8220 } 8221 } 8222 lun->res_type = 0; 8223 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8224 if (lun->pr_key_count==0) { 8225 lun->flags &= ~CTL_LUN_PR_RESERVED; 8226 lun->res_type = 0; 8227 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8228 } 8229 } 8230 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8231 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8232 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8233 persis_io.pr.pr_info.residx = residx; 8234 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8235 &persis_io, sizeof(persis_io), 0 )) > 8236 CTL_HA_STATUS_SUCCESS) { 8237 printf("CTL:Persis Out error returned from " 8238 "ctl_ha_msg_send %d\n", isc_retval); 8239 } 8240 } else /* sa_res_key != 0 */ { 8241 8242 /* 8243 * If we aren't registered currently then increment 8244 * the key count and set the registered flag. 8245 */ 8246 if (!lun->per_res[residx].registered) { 8247 lun->pr_key_count++; 8248 lun->per_res[residx].registered = 1; 8249 } 8250 8251 memcpy(&lun->per_res[residx].res_key, 8252 param->serv_act_res_key, 8253 ctl_min(sizeof(param->serv_act_res_key), 8254 sizeof(lun->per_res[residx].res_key))); 8255 8256 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8257 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8258 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8259 persis_io.pr.pr_info.residx = residx; 8260 memcpy(persis_io.pr.pr_info.sa_res_key, 8261 param->serv_act_res_key, 8262 sizeof(param->serv_act_res_key)); 8263 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8264 &persis_io, sizeof(persis_io), 0)) > 8265 CTL_HA_STATUS_SUCCESS) { 8266 printf("CTL:Persis Out error returned from " 8267 "ctl_ha_msg_send %d\n", isc_retval); 8268 } 8269 } 8270 lun->PRGeneration++; 8271 mtx_unlock(&lun->lun_lock); 8272 8273 break; 8274 } 8275 case SPRO_RESERVE: 8276#if 0 8277 printf("Reserve executed type %d\n", type); 8278#endif 8279 mtx_lock(&lun->lun_lock); 8280 if (lun->flags & CTL_LUN_PR_RESERVED) { 8281 /* 8282 * if this isn't the reservation holder and it's 8283 * not a "all registrants" type or if the type is 8284 * different then we have a conflict 8285 */ 8286 if ((lun->pr_res_idx != residx 8287 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8288 || lun->res_type != type) { 8289 mtx_unlock(&lun->lun_lock); 8290 free(ctsio->kern_data_ptr, M_CTL); 8291 ctl_set_reservation_conflict(ctsio); 8292 ctl_done((union ctl_io *)ctsio); 8293 return (CTL_RETVAL_COMPLETE); 8294 } 8295 mtx_unlock(&lun->lun_lock); 8296 } else /* create a reservation */ { 8297 /* 8298 * If it's not an "all registrants" type record 8299 * reservation holder 8300 */ 8301 if (type != SPR_TYPE_WR_EX_AR 8302 && type != SPR_TYPE_EX_AC_AR) 8303 lun->pr_res_idx = residx; /* Res holder */ 8304 else 8305 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8306 8307 lun->flags |= CTL_LUN_PR_RESERVED; 8308 lun->res_type = type; 8309 8310 mtx_unlock(&lun->lun_lock); 8311 8312 /* send msg to other side */ 8313 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8314 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8315 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8316 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8317 persis_io.pr.pr_info.res_type = type; 8318 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8319 &persis_io, sizeof(persis_io), 0)) > 8320 CTL_HA_STATUS_SUCCESS) { 8321 printf("CTL:Persis Out error returned from " 8322 "ctl_ha_msg_send %d\n", isc_retval); 8323 } 8324 } 8325 break; 8326 8327 case SPRO_RELEASE: 8328 mtx_lock(&lun->lun_lock); 8329 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8330 /* No reservation exists return good status */ 8331 mtx_unlock(&lun->lun_lock); 8332 goto done; 8333 } 8334 /* 8335 * Is this nexus a reservation holder? 8336 */ 8337 if (lun->pr_res_idx != residx 8338 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8339 /* 8340 * not a res holder return good status but 8341 * do nothing 8342 */ 8343 mtx_unlock(&lun->lun_lock); 8344 goto done; 8345 } 8346 8347 if (lun->res_type != type) { 8348 mtx_unlock(&lun->lun_lock); 8349 free(ctsio->kern_data_ptr, M_CTL); 8350 ctl_set_illegal_pr_release(ctsio); 8351 ctl_done((union ctl_io *)ctsio); 8352 return (CTL_RETVAL_COMPLETE); 8353 } 8354 8355 /* okay to release */ 8356 lun->flags &= ~CTL_LUN_PR_RESERVED; 8357 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8358 lun->res_type = 0; 8359 8360 /* 8361 * if this isn't an exclusive access 8362 * res generate UA for all other 8363 * registrants. 8364 */ 8365 if (type != SPR_TYPE_EX_AC 8366 && type != SPR_TYPE_WR_EX) { 8367 /* 8368 * temporarily unregister so we don't generate UA 8369 */ 8370 lun->per_res[residx].registered = 0; 8371 8372 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8373 if (lun->per_res[i+persis_offset].registered 8374 == 0) 8375 continue; 8376 lun->pending_sense[i].ua_pending |= 8377 CTL_UA_RES_RELEASE; 8378 } 8379 8380 lun->per_res[residx].registered = 1; 8381 } 8382 mtx_unlock(&lun->lun_lock); 8383 /* Send msg to other side */ 8384 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8385 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8386 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8387 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8388 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8389 printf("CTL:Persis Out error returned from " 8390 "ctl_ha_msg_send %d\n", isc_retval); 8391 } 8392 break; 8393 8394 case SPRO_CLEAR: 8395 /* send msg to other side */ 8396 8397 mtx_lock(&lun->lun_lock); 8398 lun->flags &= ~CTL_LUN_PR_RESERVED; 8399 lun->res_type = 0; 8400 lun->pr_key_count = 0; 8401 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8402 8403 8404 memset(&lun->per_res[residx].res_key, 8405 0, sizeof(lun->per_res[residx].res_key)); 8406 lun->per_res[residx].registered = 0; 8407 8408 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8409 if (lun->per_res[i].registered) { 8410 if (!persis_offset && i < CTL_MAX_INITIATORS) 8411 lun->pending_sense[i].ua_pending |= 8412 CTL_UA_RES_PREEMPT; 8413 else if (persis_offset && i >= persis_offset) 8414 lun->pending_sense[i-persis_offset 8415 ].ua_pending |= CTL_UA_RES_PREEMPT; 8416 8417 memset(&lun->per_res[i].res_key, 8418 0, sizeof(struct scsi_per_res_key)); 8419 lun->per_res[i].registered = 0; 8420 } 8421 lun->PRGeneration++; 8422 mtx_unlock(&lun->lun_lock); 8423 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8424 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8425 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8426 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8427 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8428 printf("CTL:Persis Out error returned from " 8429 "ctl_ha_msg_send %d\n", isc_retval); 8430 } 8431 break; 8432 8433 case SPRO_PREEMPT: { 8434 int nretval; 8435 8436 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8437 residx, ctsio, cdb, param); 8438 if (nretval != 0) 8439 return (CTL_RETVAL_COMPLETE); 8440 break; 8441 } 8442 case SPRO_REG_MOVE: 8443 case SPRO_PRE_ABO: 8444 default: 8445 free(ctsio->kern_data_ptr, M_CTL); 8446 ctl_set_invalid_field(/*ctsio*/ ctsio, 8447 /*sks_valid*/ 1, 8448 /*command*/ 1, 8449 /*field*/ 1, 8450 /*bit_valid*/ 1, 8451 /*bit*/ 0); 8452 ctl_done((union ctl_io *)ctsio); 8453 return (CTL_RETVAL_COMPLETE); 8454 break; /* NOTREACHED */ 8455 } 8456 8457done: 8458 free(ctsio->kern_data_ptr, M_CTL); 8459 ctl_set_success(ctsio); 8460 ctl_done((union ctl_io *)ctsio); 8461 8462 return (retval); 8463} 8464 8465/* 8466 * This routine is for handling a message from the other SC pertaining to 8467 * persistent reserve out. All the error checking will have been done 8468 * so only perorming the action need be done here to keep the two 8469 * in sync. 8470 */ 8471static void 8472ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8473{ 8474 struct ctl_lun *lun; 8475 struct ctl_softc *softc; 8476 int i; 8477 uint32_t targ_lun; 8478 8479 softc = control_softc; 8480 8481 targ_lun = msg->hdr.nexus.targ_mapped_lun; 8482 lun = softc->ctl_luns[targ_lun]; 8483 mtx_lock(&lun->lun_lock); 8484 switch(msg->pr.pr_info.action) { 8485 case CTL_PR_REG_KEY: 8486 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8487 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8488 lun->pr_key_count++; 8489 } 8490 lun->PRGeneration++; 8491 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8492 msg->pr.pr_info.sa_res_key, 8493 sizeof(struct scsi_per_res_key)); 8494 break; 8495 8496 case CTL_PR_UNREG_KEY: 8497 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8498 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8499 0, sizeof(struct scsi_per_res_key)); 8500 lun->pr_key_count--; 8501 8502 /* XXX Need to see if the reservation has been released */ 8503 /* if so do we need to generate UA? */ 8504 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8505 lun->flags &= ~CTL_LUN_PR_RESERVED; 8506 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8507 8508 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8509 || lun->res_type == SPR_TYPE_EX_AC_RO) 8510 && lun->pr_key_count) { 8511 /* 8512 * If the reservation is a registrants 8513 * only type we need to generate a UA 8514 * for other registered inits. The 8515 * sense code should be RESERVATIONS 8516 * RELEASED 8517 */ 8518 8519 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8520 if (lun->per_res[i+ 8521 persis_offset].registered == 0) 8522 continue; 8523 8524 lun->pending_sense[i 8525 ].ua_pending |= 8526 CTL_UA_RES_RELEASE; 8527 } 8528 } 8529 lun->res_type = 0; 8530 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8531 if (lun->pr_key_count==0) { 8532 lun->flags &= ~CTL_LUN_PR_RESERVED; 8533 lun->res_type = 0; 8534 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8535 } 8536 } 8537 lun->PRGeneration++; 8538 break; 8539 8540 case CTL_PR_RESERVE: 8541 lun->flags |= CTL_LUN_PR_RESERVED; 8542 lun->res_type = msg->pr.pr_info.res_type; 8543 lun->pr_res_idx = msg->pr.pr_info.residx; 8544 8545 break; 8546 8547 case CTL_PR_RELEASE: 8548 /* 8549 * if this isn't an exclusive access res generate UA for all 8550 * other registrants. 8551 */ 8552 if (lun->res_type != SPR_TYPE_EX_AC 8553 && lun->res_type != SPR_TYPE_WR_EX) { 8554 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8555 if (lun->per_res[i+persis_offset].registered) 8556 lun->pending_sense[i].ua_pending |= 8557 CTL_UA_RES_RELEASE; 8558 } 8559 8560 lun->flags &= ~CTL_LUN_PR_RESERVED; 8561 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8562 lun->res_type = 0; 8563 break; 8564 8565 case CTL_PR_PREEMPT: 8566 ctl_pro_preempt_other(lun, msg); 8567 break; 8568 case CTL_PR_CLEAR: 8569 lun->flags &= ~CTL_LUN_PR_RESERVED; 8570 lun->res_type = 0; 8571 lun->pr_key_count = 0; 8572 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8573 8574 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8575 if (lun->per_res[i].registered == 0) 8576 continue; 8577 if (!persis_offset 8578 && i < CTL_MAX_INITIATORS) 8579 lun->pending_sense[i].ua_pending |= 8580 CTL_UA_RES_PREEMPT; 8581 else if (persis_offset 8582 && i >= persis_offset) 8583 lun->pending_sense[i-persis_offset].ua_pending|= 8584 CTL_UA_RES_PREEMPT; 8585 memset(&lun->per_res[i].res_key, 0, 8586 sizeof(struct scsi_per_res_key)); 8587 lun->per_res[i].registered = 0; 8588 } 8589 lun->PRGeneration++; 8590 break; 8591 } 8592 8593 mtx_unlock(&lun->lun_lock); 8594} 8595 8596int 8597ctl_read_write(struct ctl_scsiio *ctsio) 8598{ 8599 struct ctl_lun *lun; 8600 struct ctl_lba_len_flags *lbalen; 8601 uint64_t lba; 8602 uint32_t num_blocks; 8603 int reladdr, fua, dpo, ebp; 8604 int retval; 8605 int isread; 8606 8607 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8608 8609 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8610 8611 reladdr = 0; 8612 fua = 0; 8613 dpo = 0; 8614 ebp = 0; 8615 8616 retval = CTL_RETVAL_COMPLETE; 8617 8618 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8619 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8620 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8621 uint32_t residx; 8622 8623 /* 8624 * XXX KDM need a lock here. 8625 */ 8626 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8627 if ((lun->res_type == SPR_TYPE_EX_AC 8628 && residx != lun->pr_res_idx) 8629 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8630 || lun->res_type == SPR_TYPE_EX_AC_AR) 8631 && !lun->per_res[residx].registered)) { 8632 ctl_set_reservation_conflict(ctsio); 8633 ctl_done((union ctl_io *)ctsio); 8634 return (CTL_RETVAL_COMPLETE); 8635 } 8636 } 8637 8638 switch (ctsio->cdb[0]) { 8639 case READ_6: 8640 case WRITE_6: { 8641 struct scsi_rw_6 *cdb; 8642 8643 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8644 8645 lba = scsi_3btoul(cdb->addr); 8646 /* only 5 bits are valid in the most significant address byte */ 8647 lba &= 0x1fffff; 8648 num_blocks = cdb->length; 8649 /* 8650 * This is correct according to SBC-2. 8651 */ 8652 if (num_blocks == 0) 8653 num_blocks = 256; 8654 break; 8655 } 8656 case READ_10: 8657 case WRITE_10: { 8658 struct scsi_rw_10 *cdb; 8659 8660 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8661 8662 if (cdb->byte2 & SRW10_RELADDR) 8663 reladdr = 1; 8664 if (cdb->byte2 & SRW10_FUA) 8665 fua = 1; 8666 if (cdb->byte2 & SRW10_DPO) 8667 dpo = 1; 8668 8669 if ((cdb->opcode == WRITE_10) 8670 && (cdb->byte2 & SRW10_EBP)) 8671 ebp = 1; 8672 8673 lba = scsi_4btoul(cdb->addr); 8674 num_blocks = scsi_2btoul(cdb->length); 8675 break; 8676 } 8677 case WRITE_VERIFY_10: { 8678 struct scsi_write_verify_10 *cdb; 8679 8680 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8681 8682 /* 8683 * XXX KDM we should do actual write verify support at some 8684 * point. This is obviously fake, we're just translating 8685 * things to a write. So we don't even bother checking the 8686 * BYTCHK field, since we don't do any verification. If 8687 * the user asks for it, we'll just pretend we did it. 8688 */ 8689 if (cdb->byte2 & SWV_DPO) 8690 dpo = 1; 8691 8692 lba = scsi_4btoul(cdb->addr); 8693 num_blocks = scsi_2btoul(cdb->length); 8694 break; 8695 } 8696 case READ_12: 8697 case WRITE_12: { 8698 struct scsi_rw_12 *cdb; 8699 8700 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8701 8702 if (cdb->byte2 & SRW12_RELADDR) 8703 reladdr = 1; 8704 if (cdb->byte2 & SRW12_FUA) 8705 fua = 1; 8706 if (cdb->byte2 & SRW12_DPO) 8707 dpo = 1; 8708 lba = scsi_4btoul(cdb->addr); 8709 num_blocks = scsi_4btoul(cdb->length); 8710 break; 8711 } 8712 case WRITE_VERIFY_12: { 8713 struct scsi_write_verify_12 *cdb; 8714 8715 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8716 8717 if (cdb->byte2 & SWV_DPO) 8718 dpo = 1; 8719 8720 lba = scsi_4btoul(cdb->addr); 8721 num_blocks = scsi_4btoul(cdb->length); 8722 8723 break; 8724 } 8725 case READ_16: 8726 case WRITE_16: { 8727 struct scsi_rw_16 *cdb; 8728 8729 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8730 8731 if (cdb->byte2 & SRW12_RELADDR) 8732 reladdr = 1; 8733 if (cdb->byte2 & SRW12_FUA) 8734 fua = 1; 8735 if (cdb->byte2 & SRW12_DPO) 8736 dpo = 1; 8737 8738 lba = scsi_8btou64(cdb->addr); 8739 num_blocks = scsi_4btoul(cdb->length); 8740 break; 8741 } 8742 case WRITE_VERIFY_16: { 8743 struct scsi_write_verify_16 *cdb; 8744 8745 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8746 8747 if (cdb->byte2 & SWV_DPO) 8748 dpo = 1; 8749 8750 lba = scsi_8btou64(cdb->addr); 8751 num_blocks = scsi_4btoul(cdb->length); 8752 break; 8753 } 8754 default: 8755 /* 8756 * We got a command we don't support. This shouldn't 8757 * happen, commands should be filtered out above us. 8758 */ 8759 ctl_set_invalid_opcode(ctsio); 8760 ctl_done((union ctl_io *)ctsio); 8761 8762 return (CTL_RETVAL_COMPLETE); 8763 break; /* NOTREACHED */ 8764 } 8765 8766 /* 8767 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8768 * interesting for us, but if RAIDCore is in write-back mode, 8769 * getting it to do write-through for a particular transaction may 8770 * not be possible. 8771 */ 8772 /* 8773 * We don't support relative addressing. That also requires 8774 * supporting linked commands, which we don't do. 8775 */ 8776 if (reladdr != 0) { 8777 ctl_set_invalid_field(ctsio, 8778 /*sks_valid*/ 1, 8779 /*command*/ 1, 8780 /*field*/ 1, 8781 /*bit_valid*/ 1, 8782 /*bit*/ 0); 8783 ctl_done((union ctl_io *)ctsio); 8784 return (CTL_RETVAL_COMPLETE); 8785 } 8786 8787 /* 8788 * The first check is to make sure we're in bounds, the second 8789 * check is to catch wrap-around problems. If the lba + num blocks 8790 * is less than the lba, then we've wrapped around and the block 8791 * range is invalid anyway. 8792 */ 8793 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8794 || ((lba + num_blocks) < lba)) { 8795 ctl_set_lba_out_of_range(ctsio); 8796 ctl_done((union ctl_io *)ctsio); 8797 return (CTL_RETVAL_COMPLETE); 8798 } 8799 8800 /* 8801 * According to SBC-3, a transfer length of 0 is not an error. 8802 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8803 * translates to 256 blocks for those commands. 8804 */ 8805 if (num_blocks == 0) { 8806 ctl_set_success(ctsio); 8807 ctl_done((union ctl_io *)ctsio); 8808 return (CTL_RETVAL_COMPLETE); 8809 } 8810 8811 lbalen = (struct ctl_lba_len_flags *) 8812 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8813 lbalen->lba = lba; 8814 lbalen->len = num_blocks; 8815 lbalen->flags = isread ? CTL_LLF_READ : CTL_LLF_WRITE; 8816 8817 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 8818 ctsio->kern_rel_offset = 0; 8819 8820 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 8821 8822 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8823 8824 return (retval); 8825} 8826 8827static int 8828ctl_cnw_cont(union ctl_io *io) 8829{ 8830 struct ctl_scsiio *ctsio; 8831 struct ctl_lun *lun; 8832 struct ctl_lba_len_flags *lbalen; 8833 int retval; 8834 8835 ctsio = &io->scsiio; 8836 ctsio->io_hdr.status = CTL_STATUS_NONE; 8837 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_CONT; 8838 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8839 lbalen = (struct ctl_lba_len_flags *) 8840 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8841 lbalen->flags = CTL_LLF_WRITE; 8842 8843 CTL_DEBUG_PRINT(("ctl_cnw_cont: calling data_submit()\n")); 8844 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8845 return (retval); 8846} 8847 8848int 8849ctl_cnw(struct ctl_scsiio *ctsio) 8850{ 8851 struct ctl_lun *lun; 8852 struct ctl_lba_len_flags *lbalen; 8853 uint64_t lba; 8854 uint32_t num_blocks; 8855 int fua, dpo; 8856 int retval; 8857 8858 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8859 8860 CTL_DEBUG_PRINT(("ctl_cnw: command: %#x\n", ctsio->cdb[0])); 8861 8862 fua = 0; 8863 dpo = 0; 8864 8865 retval = CTL_RETVAL_COMPLETE; 8866 8867 switch (ctsio->cdb[0]) { 8868 case COMPARE_AND_WRITE: { 8869 struct scsi_compare_and_write *cdb; 8870 8871 cdb = (struct scsi_compare_and_write *)ctsio->cdb; 8872 8873 if (cdb->byte2 & SRW10_FUA) 8874 fua = 1; 8875 if (cdb->byte2 & SRW10_DPO) 8876 dpo = 1; 8877 lba = scsi_8btou64(cdb->addr); 8878 num_blocks = cdb->length; 8879 break; 8880 } 8881 default: 8882 /* 8883 * We got a command we don't support. This shouldn't 8884 * happen, commands should be filtered out above us. 8885 */ 8886 ctl_set_invalid_opcode(ctsio); 8887 ctl_done((union ctl_io *)ctsio); 8888 8889 return (CTL_RETVAL_COMPLETE); 8890 break; /* NOTREACHED */ 8891 } 8892 8893 /* 8894 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8895 * interesting for us, but if RAIDCore is in write-back mode, 8896 * getting it to do write-through for a particular transaction may 8897 * not be possible. 8898 */ 8899 8900 /* 8901 * The first check is to make sure we're in bounds, the second 8902 * check is to catch wrap-around problems. If the lba + num blocks 8903 * is less than the lba, then we've wrapped around and the block 8904 * range is invalid anyway. 8905 */ 8906 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8907 || ((lba + num_blocks) < lba)) { 8908 ctl_set_lba_out_of_range(ctsio); 8909 ctl_done((union ctl_io *)ctsio); 8910 return (CTL_RETVAL_COMPLETE); 8911 } 8912 8913 /* 8914 * According to SBC-3, a transfer length of 0 is not an error. 8915 */ 8916 if (num_blocks == 0) { 8917 ctl_set_success(ctsio); 8918 ctl_done((union ctl_io *)ctsio); 8919 return (CTL_RETVAL_COMPLETE); 8920 } 8921 8922 ctsio->kern_total_len = 2 * num_blocks * lun->be_lun->blocksize; 8923 ctsio->kern_rel_offset = 0; 8924 8925 /* 8926 * Set the IO_CONT flag, so that if this I/O gets passed to 8927 * ctl_data_submit_done(), it'll get passed back to 8928 * ctl_ctl_cnw_cont() for further processing. 8929 */ 8930 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 8931 ctsio->io_cont = ctl_cnw_cont; 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 lbalen->flags = CTL_LLF_COMPARE; 8938 8939 CTL_DEBUG_PRINT(("ctl_cnw: calling data_submit()\n")); 8940 retval = lun->backend->data_submit((union ctl_io *)ctsio); 8941 return (retval); 8942} 8943 8944int 8945ctl_verify(struct ctl_scsiio *ctsio) 8946{ 8947 struct ctl_lun *lun; 8948 struct ctl_lba_len_flags *lbalen; 8949 uint64_t lba; 8950 uint32_t num_blocks; 8951 int bytchk, dpo; 8952 int retval; 8953 8954 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8955 8956 CTL_DEBUG_PRINT(("ctl_verify: command: %#x\n", ctsio->cdb[0])); 8957 8958 bytchk = 0; 8959 dpo = 0; 8960 retval = CTL_RETVAL_COMPLETE; 8961 8962 switch (ctsio->cdb[0]) { 8963 case VERIFY_10: { 8964 struct scsi_verify_10 *cdb; 8965 8966 cdb = (struct scsi_verify_10 *)ctsio->cdb; 8967 if (cdb->byte2 & SVFY_BYTCHK) 8968 bytchk = 1; 8969 if (cdb->byte2 & SVFY_DPO) 8970 dpo = 1; 8971 lba = scsi_4btoul(cdb->addr); 8972 num_blocks = scsi_2btoul(cdb->length); 8973 break; 8974 } 8975 case VERIFY_12: { 8976 struct scsi_verify_12 *cdb; 8977 8978 cdb = (struct scsi_verify_12 *)ctsio->cdb; 8979 if (cdb->byte2 & SVFY_BYTCHK) 8980 bytchk = 1; 8981 if (cdb->byte2 & SVFY_DPO) 8982 dpo = 1; 8983 lba = scsi_4btoul(cdb->addr); 8984 num_blocks = scsi_4btoul(cdb->length); 8985 break; 8986 } 8987 case VERIFY_16: { 8988 struct scsi_rw_16 *cdb; 8989 8990 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8991 if (cdb->byte2 & SVFY_BYTCHK) 8992 bytchk = 1; 8993 if (cdb->byte2 & SVFY_DPO) 8994 dpo = 1; 8995 lba = scsi_8btou64(cdb->addr); 8996 num_blocks = scsi_4btoul(cdb->length); 8997 break; 8998 } 8999 default: 9000 /* 9001 * We got a command we don't support. This shouldn't 9002 * happen, commands should be filtered out above us. 9003 */ 9004 ctl_set_invalid_opcode(ctsio); 9005 ctl_done((union ctl_io *)ctsio); 9006 return (CTL_RETVAL_COMPLETE); 9007 } 9008 9009 /* 9010 * The first check is to make sure we're in bounds, the second 9011 * check is to catch wrap-around problems. If the lba + num blocks 9012 * is less than the lba, then we've wrapped around and the block 9013 * range is invalid anyway. 9014 */ 9015 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9016 || ((lba + num_blocks) < lba)) { 9017 ctl_set_lba_out_of_range(ctsio); 9018 ctl_done((union ctl_io *)ctsio); 9019 return (CTL_RETVAL_COMPLETE); 9020 } 9021 9022 /* 9023 * According to SBC-3, a transfer length of 0 is not an error. 9024 */ 9025 if (num_blocks == 0) { 9026 ctl_set_success(ctsio); 9027 ctl_done((union ctl_io *)ctsio); 9028 return (CTL_RETVAL_COMPLETE); 9029 } 9030 9031 lbalen = (struct ctl_lba_len_flags *) 9032 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9033 lbalen->lba = lba; 9034 lbalen->len = num_blocks; 9035 if (bytchk) { 9036 lbalen->flags = CTL_LLF_COMPARE; 9037 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 9038 } else { 9039 lbalen->flags = CTL_LLF_VERIFY; 9040 ctsio->kern_total_len = 0; 9041 } 9042 ctsio->kern_rel_offset = 0; 9043 9044 CTL_DEBUG_PRINT(("ctl_verify: calling data_submit()\n")); 9045 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9046 return (retval); 9047} 9048 9049int 9050ctl_report_luns(struct ctl_scsiio *ctsio) 9051{ 9052 struct scsi_report_luns *cdb; 9053 struct scsi_report_luns_data *lun_data; 9054 struct ctl_lun *lun, *request_lun; 9055 int num_luns, retval; 9056 uint32_t alloc_len, lun_datalen; 9057 int num_filled, well_known; 9058 uint32_t initidx, targ_lun_id, lun_id; 9059 9060 retval = CTL_RETVAL_COMPLETE; 9061 well_known = 0; 9062 9063 cdb = (struct scsi_report_luns *)ctsio->cdb; 9064 9065 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 9066 9067 mtx_lock(&control_softc->ctl_lock); 9068 num_luns = control_softc->num_luns; 9069 mtx_unlock(&control_softc->ctl_lock); 9070 9071 switch (cdb->select_report) { 9072 case RPL_REPORT_DEFAULT: 9073 case RPL_REPORT_ALL: 9074 break; 9075 case RPL_REPORT_WELLKNOWN: 9076 well_known = 1; 9077 num_luns = 0; 9078 break; 9079 default: 9080 ctl_set_invalid_field(ctsio, 9081 /*sks_valid*/ 1, 9082 /*command*/ 1, 9083 /*field*/ 2, 9084 /*bit_valid*/ 0, 9085 /*bit*/ 0); 9086 ctl_done((union ctl_io *)ctsio); 9087 return (retval); 9088 break; /* NOTREACHED */ 9089 } 9090 9091 alloc_len = scsi_4btoul(cdb->length); 9092 /* 9093 * The initiator has to allocate at least 16 bytes for this request, 9094 * so he can at least get the header and the first LUN. Otherwise 9095 * we reject the request (per SPC-3 rev 14, section 6.21). 9096 */ 9097 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 9098 sizeof(struct scsi_report_luns_lundata))) { 9099 ctl_set_invalid_field(ctsio, 9100 /*sks_valid*/ 1, 9101 /*command*/ 1, 9102 /*field*/ 6, 9103 /*bit_valid*/ 0, 9104 /*bit*/ 0); 9105 ctl_done((union ctl_io *)ctsio); 9106 return (retval); 9107 } 9108 9109 request_lun = (struct ctl_lun *) 9110 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9111 9112 lun_datalen = sizeof(*lun_data) + 9113 (num_luns * sizeof(struct scsi_report_luns_lundata)); 9114 9115 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 9116 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 9117 ctsio->kern_sg_entries = 0; 9118 9119 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9120 9121 mtx_lock(&control_softc->ctl_lock); 9122 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 9123 lun_id = targ_lun_id; 9124 if (ctsio->io_hdr.nexus.lun_map_fn != NULL) 9125 lun_id = ctsio->io_hdr.nexus.lun_map_fn(ctsio->io_hdr.nexus.lun_map_arg, lun_id); 9126 if (lun_id >= CTL_MAX_LUNS) 9127 continue; 9128 lun = control_softc->ctl_luns[lun_id]; 9129 if (lun == NULL) 9130 continue; 9131 9132 if (targ_lun_id <= 0xff) { 9133 /* 9134 * Peripheral addressing method, bus number 0. 9135 */ 9136 lun_data->luns[num_filled].lundata[0] = 9137 RPL_LUNDATA_ATYP_PERIPH; 9138 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 9139 num_filled++; 9140 } else if (targ_lun_id <= 0x3fff) { 9141 /* 9142 * Flat addressing method. 9143 */ 9144 lun_data->luns[num_filled].lundata[0] = 9145 RPL_LUNDATA_ATYP_FLAT | 9146 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 9147#ifdef OLDCTLHEADERS 9148 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 9149 (targ_lun_id & SRLD_BUS_LUN_MASK); 9150#endif 9151 lun_data->luns[num_filled].lundata[1] = 9152#ifdef OLDCTLHEADERS 9153 targ_lun_id >> SRLD_BUS_LUN_BITS; 9154#endif 9155 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 9156 num_filled++; 9157 } else { 9158 printf("ctl_report_luns: bogus LUN number %jd, " 9159 "skipping\n", (intmax_t)targ_lun_id); 9160 } 9161 /* 9162 * According to SPC-3, rev 14 section 6.21: 9163 * 9164 * "The execution of a REPORT LUNS command to any valid and 9165 * installed logical unit shall clear the REPORTED LUNS DATA 9166 * HAS CHANGED unit attention condition for all logical 9167 * units of that target with respect to the requesting 9168 * initiator. A valid and installed logical unit is one 9169 * having a PERIPHERAL QUALIFIER of 000b in the standard 9170 * INQUIRY data (see 6.4.2)." 9171 * 9172 * If request_lun is NULL, the LUN this report luns command 9173 * was issued to is either disabled or doesn't exist. In that 9174 * case, we shouldn't clear any pending lun change unit 9175 * attention. 9176 */ 9177 if (request_lun != NULL) { 9178 mtx_lock(&lun->lun_lock); 9179 lun->pending_sense[initidx].ua_pending &= 9180 ~CTL_UA_LUN_CHANGE; 9181 mtx_unlock(&lun->lun_lock); 9182 } 9183 } 9184 mtx_unlock(&control_softc->ctl_lock); 9185 9186 /* 9187 * It's quite possible that we've returned fewer LUNs than we allocated 9188 * space for. Trim it. 9189 */ 9190 lun_datalen = sizeof(*lun_data) + 9191 (num_filled * sizeof(struct scsi_report_luns_lundata)); 9192 9193 if (lun_datalen < alloc_len) { 9194 ctsio->residual = alloc_len - lun_datalen; 9195 ctsio->kern_data_len = lun_datalen; 9196 ctsio->kern_total_len = lun_datalen; 9197 } else { 9198 ctsio->residual = 0; 9199 ctsio->kern_data_len = alloc_len; 9200 ctsio->kern_total_len = alloc_len; 9201 } 9202 ctsio->kern_data_resid = 0; 9203 ctsio->kern_rel_offset = 0; 9204 ctsio->kern_sg_entries = 0; 9205 9206 /* 9207 * We set this to the actual data length, regardless of how much 9208 * space we actually have to return results. If the user looks at 9209 * this value, he'll know whether or not he allocated enough space 9210 * and reissue the command if necessary. We don't support well 9211 * known logical units, so if the user asks for that, return none. 9212 */ 9213 scsi_ulto4b(lun_datalen - 8, lun_data->length); 9214 9215 /* 9216 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 9217 * this request. 9218 */ 9219 ctsio->scsi_status = SCSI_STATUS_OK; 9220 9221 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9222 ctsio->be_move_done = ctl_config_move_done; 9223 ctl_datamove((union ctl_io *)ctsio); 9224 9225 return (retval); 9226} 9227 9228int 9229ctl_request_sense(struct ctl_scsiio *ctsio) 9230{ 9231 struct scsi_request_sense *cdb; 9232 struct scsi_sense_data *sense_ptr; 9233 struct ctl_lun *lun; 9234 uint32_t initidx; 9235 int have_error; 9236 scsi_sense_data_type sense_format; 9237 9238 cdb = (struct scsi_request_sense *)ctsio->cdb; 9239 9240 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9241 9242 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9243 9244 /* 9245 * Determine which sense format the user wants. 9246 */ 9247 if (cdb->byte2 & SRS_DESC) 9248 sense_format = SSD_TYPE_DESC; 9249 else 9250 sense_format = SSD_TYPE_FIXED; 9251 9252 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9253 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9254 ctsio->kern_sg_entries = 0; 9255 9256 /* 9257 * struct scsi_sense_data, which is currently set to 256 bytes, is 9258 * larger than the largest allowed value for the length field in the 9259 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9260 */ 9261 ctsio->residual = 0; 9262 ctsio->kern_data_len = cdb->length; 9263 ctsio->kern_total_len = cdb->length; 9264 9265 ctsio->kern_data_resid = 0; 9266 ctsio->kern_rel_offset = 0; 9267 ctsio->kern_sg_entries = 0; 9268 9269 /* 9270 * If we don't have a LUN, we don't have any pending sense. 9271 */ 9272 if (lun == NULL) 9273 goto no_sense; 9274 9275 have_error = 0; 9276 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9277 /* 9278 * Check for pending sense, and then for pending unit attentions. 9279 * Pending sense gets returned first, then pending unit attentions. 9280 */ 9281 mtx_lock(&lun->lun_lock); 9282 if (ctl_is_set(lun->have_ca, initidx)) { 9283 scsi_sense_data_type stored_format; 9284 9285 /* 9286 * Check to see which sense format was used for the stored 9287 * sense data. 9288 */ 9289 stored_format = scsi_sense_type( 9290 &lun->pending_sense[initidx].sense); 9291 9292 /* 9293 * If the user requested a different sense format than the 9294 * one we stored, then we need to convert it to the other 9295 * format. If we're going from descriptor to fixed format 9296 * sense data, we may lose things in translation, depending 9297 * on what options were used. 9298 * 9299 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9300 * for some reason we'll just copy it out as-is. 9301 */ 9302 if ((stored_format == SSD_TYPE_FIXED) 9303 && (sense_format == SSD_TYPE_DESC)) 9304 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9305 &lun->pending_sense[initidx].sense, 9306 (struct scsi_sense_data_desc *)sense_ptr); 9307 else if ((stored_format == SSD_TYPE_DESC) 9308 && (sense_format == SSD_TYPE_FIXED)) 9309 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9310 &lun->pending_sense[initidx].sense, 9311 (struct scsi_sense_data_fixed *)sense_ptr); 9312 else 9313 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9314 ctl_min(sizeof(*sense_ptr), 9315 sizeof(lun->pending_sense[initidx].sense))); 9316 9317 ctl_clear_mask(lun->have_ca, initidx); 9318 have_error = 1; 9319 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9320 ctl_ua_type ua_type; 9321 9322 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9323 sense_ptr, sense_format); 9324 if (ua_type != CTL_UA_NONE) { 9325 have_error = 1; 9326 /* We're reporting this UA, so clear it */ 9327 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9328 } 9329 } 9330 mtx_unlock(&lun->lun_lock); 9331 9332 /* 9333 * We already have a pending error, return it. 9334 */ 9335 if (have_error != 0) { 9336 /* 9337 * We report the SCSI status as OK, since the status of the 9338 * request sense command itself is OK. 9339 */ 9340 ctsio->scsi_status = SCSI_STATUS_OK; 9341 9342 /* 9343 * We report 0 for the sense length, because we aren't doing 9344 * autosense in this case. We're reporting sense as 9345 * parameter data. 9346 */ 9347 ctsio->sense_len = 0; 9348 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9349 ctsio->be_move_done = ctl_config_move_done; 9350 ctl_datamove((union ctl_io *)ctsio); 9351 9352 return (CTL_RETVAL_COMPLETE); 9353 } 9354 9355no_sense: 9356 9357 /* 9358 * No sense information to report, so we report that everything is 9359 * okay. 9360 */ 9361 ctl_set_sense_data(sense_ptr, 9362 lun, 9363 sense_format, 9364 /*current_error*/ 1, 9365 /*sense_key*/ SSD_KEY_NO_SENSE, 9366 /*asc*/ 0x00, 9367 /*ascq*/ 0x00, 9368 SSD_ELEM_NONE); 9369 9370 ctsio->scsi_status = SCSI_STATUS_OK; 9371 9372 /* 9373 * We report 0 for the sense length, because we aren't doing 9374 * autosense in this case. We're reporting sense as parameter data. 9375 */ 9376 ctsio->sense_len = 0; 9377 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9378 ctsio->be_move_done = ctl_config_move_done; 9379 ctl_datamove((union ctl_io *)ctsio); 9380 9381 return (CTL_RETVAL_COMPLETE); 9382} 9383 9384int 9385ctl_tur(struct ctl_scsiio *ctsio) 9386{ 9387 struct ctl_lun *lun; 9388 9389 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9390 9391 CTL_DEBUG_PRINT(("ctl_tur\n")); 9392 9393 if (lun == NULL) 9394 return (EINVAL); 9395 9396 ctsio->scsi_status = SCSI_STATUS_OK; 9397 ctsio->io_hdr.status = CTL_SUCCESS; 9398 9399 ctl_done((union ctl_io *)ctsio); 9400 9401 return (CTL_RETVAL_COMPLETE); 9402} 9403 9404#ifdef notyet 9405static int 9406ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9407{ 9408 9409} 9410#endif 9411 9412static int 9413ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9414{ 9415 struct scsi_vpd_supported_pages *pages; 9416 int sup_page_size; 9417 struct ctl_lun *lun; 9418 9419 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9420 9421 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9422 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9423 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9424 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9425 ctsio->kern_sg_entries = 0; 9426 9427 if (sup_page_size < alloc_len) { 9428 ctsio->residual = alloc_len - sup_page_size; 9429 ctsio->kern_data_len = sup_page_size; 9430 ctsio->kern_total_len = sup_page_size; 9431 } else { 9432 ctsio->residual = 0; 9433 ctsio->kern_data_len = alloc_len; 9434 ctsio->kern_total_len = alloc_len; 9435 } 9436 ctsio->kern_data_resid = 0; 9437 ctsio->kern_rel_offset = 0; 9438 ctsio->kern_sg_entries = 0; 9439 9440 /* 9441 * The control device is always connected. The disk device, on the 9442 * other hand, may not be online all the time. Need to change this 9443 * to figure out whether the disk device is actually online or not. 9444 */ 9445 if (lun != NULL) 9446 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9447 lun->be_lun->lun_type; 9448 else 9449 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9450 9451 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9452 /* Supported VPD pages */ 9453 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9454 /* Serial Number */ 9455 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9456 /* Device Identification */ 9457 pages->page_list[2] = SVPD_DEVICE_ID; 9458 /* Block limits */ 9459 pages->page_list[3] = SVPD_BLOCK_LIMITS; 9460 /* Logical Block Provisioning */ 9461 pages->page_list[4] = SVPD_LBP; 9462 9463 ctsio->scsi_status = SCSI_STATUS_OK; 9464 9465 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9466 ctsio->be_move_done = ctl_config_move_done; 9467 ctl_datamove((union ctl_io *)ctsio); 9468 9469 return (CTL_RETVAL_COMPLETE); 9470} 9471 9472static int 9473ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9474{ 9475 struct scsi_vpd_unit_serial_number *sn_ptr; 9476 struct ctl_lun *lun; 9477 9478 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9479 9480 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9481 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9482 ctsio->kern_sg_entries = 0; 9483 9484 if (sizeof(*sn_ptr) < alloc_len) { 9485 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9486 ctsio->kern_data_len = sizeof(*sn_ptr); 9487 ctsio->kern_total_len = sizeof(*sn_ptr); 9488 } else { 9489 ctsio->residual = 0; 9490 ctsio->kern_data_len = alloc_len; 9491 ctsio->kern_total_len = alloc_len; 9492 } 9493 ctsio->kern_data_resid = 0; 9494 ctsio->kern_rel_offset = 0; 9495 ctsio->kern_sg_entries = 0; 9496 9497 /* 9498 * The control device is always connected. The disk device, on the 9499 * other hand, may not be online all the time. Need to change this 9500 * to figure out whether the disk device is actually online or not. 9501 */ 9502 if (lun != NULL) 9503 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9504 lun->be_lun->lun_type; 9505 else 9506 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9507 9508 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9509 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9510 /* 9511 * If we don't have a LUN, we just leave the serial number as 9512 * all spaces. 9513 */ 9514 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9515 if (lun != NULL) { 9516 strncpy((char *)sn_ptr->serial_num, 9517 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9518 } 9519 ctsio->scsi_status = SCSI_STATUS_OK; 9520 9521 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9522 ctsio->be_move_done = ctl_config_move_done; 9523 ctl_datamove((union ctl_io *)ctsio); 9524 9525 return (CTL_RETVAL_COMPLETE); 9526} 9527 9528 9529static int 9530ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9531{ 9532 struct scsi_vpd_device_id *devid_ptr; 9533 struct scsi_vpd_id_descriptor *desc, *desc1; 9534 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 9535 struct scsi_vpd_id_t10 *t10id; 9536 struct ctl_softc *ctl_softc; 9537 struct ctl_lun *lun; 9538 struct ctl_frontend *fe; 9539 char *val; 9540 int data_len, devid_len; 9541 9542 ctl_softc = control_softc; 9543 9544 fe = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9545 9546 if (fe->devid != NULL) 9547 return ((fe->devid)(ctsio, alloc_len)); 9548 9549 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9550 9551 if (lun == NULL) { 9552 devid_len = CTL_DEVID_MIN_LEN; 9553 } else { 9554 devid_len = max(CTL_DEVID_MIN_LEN, 9555 strnlen(lun->be_lun->device_id, CTL_DEVID_LEN)); 9556 } 9557 9558 data_len = sizeof(struct scsi_vpd_device_id) + 9559 sizeof(struct scsi_vpd_id_descriptor) + 9560 sizeof(struct scsi_vpd_id_t10) + devid_len + 9561 sizeof(struct scsi_vpd_id_descriptor) + CTL_WWPN_LEN + 9562 sizeof(struct scsi_vpd_id_descriptor) + 9563 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9564 sizeof(struct scsi_vpd_id_descriptor) + 9565 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9566 9567 ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO); 9568 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9569 ctsio->kern_sg_entries = 0; 9570 9571 if (data_len < alloc_len) { 9572 ctsio->residual = alloc_len - data_len; 9573 ctsio->kern_data_len = data_len; 9574 ctsio->kern_total_len = data_len; 9575 } else { 9576 ctsio->residual = 0; 9577 ctsio->kern_data_len = alloc_len; 9578 ctsio->kern_total_len = alloc_len; 9579 } 9580 ctsio->kern_data_resid = 0; 9581 ctsio->kern_rel_offset = 0; 9582 ctsio->kern_sg_entries = 0; 9583 9584 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9585 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 9586 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9587 sizeof(struct scsi_vpd_id_t10) + devid_len); 9588 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 9589 CTL_WWPN_LEN); 9590 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 9591 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9592 9593 /* 9594 * The control device is always connected. The disk device, on the 9595 * other hand, may not be online all the time. 9596 */ 9597 if (lun != NULL) 9598 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9599 lun->be_lun->lun_type; 9600 else 9601 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9602 9603 devid_ptr->page_code = SVPD_DEVICE_ID; 9604 9605 scsi_ulto2b(data_len - 4, devid_ptr->length); 9606 9607 /* 9608 * For Fibre channel, 9609 */ 9610 if (fe->port_type == CTL_PORT_FC) 9611 { 9612 desc->proto_codeset = (SCSI_PROTO_FC << 4) | 9613 SVPD_ID_CODESET_ASCII; 9614 desc1->proto_codeset = (SCSI_PROTO_FC << 4) | 9615 SVPD_ID_CODESET_BINARY; 9616 } 9617 else 9618 { 9619 desc->proto_codeset = (SCSI_PROTO_SPI << 4) | 9620 SVPD_ID_CODESET_ASCII; 9621 desc1->proto_codeset = (SCSI_PROTO_SPI << 4) | 9622 SVPD_ID_CODESET_BINARY; 9623 } 9624 desc2->proto_codeset = desc3->proto_codeset = desc1->proto_codeset; 9625 9626 /* 9627 * We're using a LUN association here. i.e., this device ID is a 9628 * per-LUN identifier. 9629 */ 9630 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 9631 desc->length = sizeof(*t10id) + devid_len; 9632 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 9633 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 9634 } else { 9635 memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 9636 strncpy(t10id->vendor, val, 9637 min(sizeof(t10id->vendor), strlen(val))); 9638 } 9639 9640 /* 9641 * desc1 is for the WWPN which is a port asscociation. 9642 */ 9643 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | SVPD_ID_TYPE_NAA; 9644 desc1->length = CTL_WWPN_LEN; 9645 /* XXX Call Reggie's get_WWNN func here then add port # to the end */ 9646 /* For testing just create the WWPN */ 9647#if 0 9648 ddb_GetWWNN((char *)desc1->identifier); 9649 9650 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9651 /* This is so Copancontrol will return something sane */ 9652 if (ctsio->io_hdr.nexus.targ_port!=0 && 9653 ctsio->io_hdr.nexus.targ_port!=8) 9654 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port-1; 9655 else 9656 desc1->identifier[7] += ctsio->io_hdr.nexus.targ_port; 9657#endif 9658 9659 be64enc(desc1->identifier, fe->wwpn); 9660 9661 /* 9662 * desc2 is for the Relative Target Port(type 4h) identifier 9663 */ 9664 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9665 | SVPD_ID_TYPE_RELTARG; 9666 desc2->length = 4; 9667//#if 0 9668 /* NOTE: if the port is 0 or 8 we don't want to subtract 1 */ 9669 /* This is so Copancontrol will return something sane */ 9670 if (ctsio->io_hdr.nexus.targ_port!=0 && 9671 ctsio->io_hdr.nexus.targ_port!=8) 9672 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port - 1; 9673 else 9674 desc2->identifier[3] = ctsio->io_hdr.nexus.targ_port; 9675//#endif 9676 9677 /* 9678 * desc3 is for the Target Port Group(type 5h) identifier 9679 */ 9680 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT 9681 | SVPD_ID_TYPE_TPORTGRP; 9682 desc3->length = 4; 9683 if (ctsio->io_hdr.nexus.targ_port < CTL_MAX_PORTS || ctl_is_single) 9684 desc3->identifier[3] = 1; 9685 else 9686 desc3->identifier[3] = 2; 9687 9688 /* 9689 * If we've actually got a backend, copy the device id from the 9690 * per-LUN data. Otherwise, set it to all spaces. 9691 */ 9692 if (lun != NULL) { 9693 /* 9694 * Copy the backend's LUN ID. 9695 */ 9696 strncpy((char *)t10id->vendor_spec_id, 9697 (char *)lun->be_lun->device_id, devid_len); 9698 } else { 9699 /* 9700 * No backend, set this to spaces. 9701 */ 9702 memset(t10id->vendor_spec_id, 0x20, devid_len); 9703 } 9704 9705 ctsio->scsi_status = SCSI_STATUS_OK; 9706 9707 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9708 ctsio->be_move_done = ctl_config_move_done; 9709 ctl_datamove((union ctl_io *)ctsio); 9710 9711 return (CTL_RETVAL_COMPLETE); 9712} 9713 9714static int 9715ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9716{ 9717 struct scsi_vpd_block_limits *bl_ptr; 9718 struct ctl_lun *lun; 9719 int bs; 9720 9721 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9722 bs = lun->be_lun->blocksize; 9723 9724 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9725 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9726 ctsio->kern_sg_entries = 0; 9727 9728 if (sizeof(*bl_ptr) < alloc_len) { 9729 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9730 ctsio->kern_data_len = sizeof(*bl_ptr); 9731 ctsio->kern_total_len = sizeof(*bl_ptr); 9732 } else { 9733 ctsio->residual = 0; 9734 ctsio->kern_data_len = alloc_len; 9735 ctsio->kern_total_len = alloc_len; 9736 } 9737 ctsio->kern_data_resid = 0; 9738 ctsio->kern_rel_offset = 0; 9739 ctsio->kern_sg_entries = 0; 9740 9741 /* 9742 * The control device is always connected. The disk device, on the 9743 * other hand, may not be online all the time. Need to change this 9744 * to figure out whether the disk device is actually online or not. 9745 */ 9746 if (lun != NULL) 9747 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9748 lun->be_lun->lun_type; 9749 else 9750 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9751 9752 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9753 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9754 bl_ptr->max_cmp_write_len = 0xff; 9755 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9756 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9757 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9758 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9759 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9760 } 9761 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9762 9763 ctsio->scsi_status = SCSI_STATUS_OK; 9764 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9765 ctsio->be_move_done = ctl_config_move_done; 9766 ctl_datamove((union ctl_io *)ctsio); 9767 9768 return (CTL_RETVAL_COMPLETE); 9769} 9770 9771static int 9772ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 9773{ 9774 struct scsi_vpd_logical_block_prov *lbp_ptr; 9775 struct ctl_lun *lun; 9776 int bs; 9777 9778 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9779 bs = lun->be_lun->blocksize; 9780 9781 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 9782 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 9783 ctsio->kern_sg_entries = 0; 9784 9785 if (sizeof(*lbp_ptr) < alloc_len) { 9786 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 9787 ctsio->kern_data_len = sizeof(*lbp_ptr); 9788 ctsio->kern_total_len = sizeof(*lbp_ptr); 9789 } else { 9790 ctsio->residual = 0; 9791 ctsio->kern_data_len = alloc_len; 9792 ctsio->kern_total_len = alloc_len; 9793 } 9794 ctsio->kern_data_resid = 0; 9795 ctsio->kern_rel_offset = 0; 9796 ctsio->kern_sg_entries = 0; 9797 9798 /* 9799 * The control device is always connected. The disk device, on the 9800 * other hand, may not be online all the time. Need to change this 9801 * to figure out whether the disk device is actually online or not. 9802 */ 9803 if (lun != NULL) 9804 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9805 lun->be_lun->lun_type; 9806 else 9807 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9808 9809 lbp_ptr->page_code = SVPD_LBP; 9810 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 9811 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 9812 9813 ctsio->scsi_status = SCSI_STATUS_OK; 9814 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9815 ctsio->be_move_done = ctl_config_move_done; 9816 ctl_datamove((union ctl_io *)ctsio); 9817 9818 return (CTL_RETVAL_COMPLETE); 9819} 9820 9821static int 9822ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 9823{ 9824 struct scsi_inquiry *cdb; 9825 struct ctl_lun *lun; 9826 int alloc_len, retval; 9827 9828 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9829 cdb = (struct scsi_inquiry *)ctsio->cdb; 9830 9831 retval = CTL_RETVAL_COMPLETE; 9832 9833 alloc_len = scsi_2btoul(cdb->length); 9834 9835 switch (cdb->page_code) { 9836 case SVPD_SUPPORTED_PAGES: 9837 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 9838 break; 9839 case SVPD_UNIT_SERIAL_NUMBER: 9840 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 9841 break; 9842 case SVPD_DEVICE_ID: 9843 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 9844 break; 9845 case SVPD_BLOCK_LIMITS: 9846 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 9847 break; 9848 case SVPD_LBP: 9849 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 9850 break; 9851 default: 9852 ctl_set_invalid_field(ctsio, 9853 /*sks_valid*/ 1, 9854 /*command*/ 1, 9855 /*field*/ 2, 9856 /*bit_valid*/ 0, 9857 /*bit*/ 0); 9858 ctl_done((union ctl_io *)ctsio); 9859 retval = CTL_RETVAL_COMPLETE; 9860 break; 9861 } 9862 9863 return (retval); 9864} 9865 9866static int 9867ctl_inquiry_std(struct ctl_scsiio *ctsio) 9868{ 9869 struct scsi_inquiry_data *inq_ptr; 9870 struct scsi_inquiry *cdb; 9871 struct ctl_softc *ctl_softc; 9872 struct ctl_lun *lun; 9873 char *val; 9874 uint32_t alloc_len; 9875 int is_fc; 9876 9877 ctl_softc = control_softc; 9878 9879 /* 9880 * Figure out whether we're talking to a Fibre Channel port or not. 9881 * We treat the ioctl front end, and any SCSI adapters, as packetized 9882 * SCSI front ends. 9883 */ 9884 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 9885 CTL_PORT_FC) 9886 is_fc = 0; 9887 else 9888 is_fc = 1; 9889 9890 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9891 cdb = (struct scsi_inquiry *)ctsio->cdb; 9892 alloc_len = scsi_2btoul(cdb->length); 9893 9894 /* 9895 * We malloc the full inquiry data size here and fill it 9896 * in. If the user only asks for less, we'll give him 9897 * that much. 9898 */ 9899 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 9900 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 9901 ctsio->kern_sg_entries = 0; 9902 ctsio->kern_data_resid = 0; 9903 ctsio->kern_rel_offset = 0; 9904 9905 if (sizeof(*inq_ptr) < alloc_len) { 9906 ctsio->residual = alloc_len - sizeof(*inq_ptr); 9907 ctsio->kern_data_len = sizeof(*inq_ptr); 9908 ctsio->kern_total_len = sizeof(*inq_ptr); 9909 } else { 9910 ctsio->residual = 0; 9911 ctsio->kern_data_len = alloc_len; 9912 ctsio->kern_total_len = alloc_len; 9913 } 9914 9915 /* 9916 * If we have a LUN configured, report it as connected. Otherwise, 9917 * report that it is offline or no device is supported, depending 9918 * on the value of inquiry_pq_no_lun. 9919 * 9920 * According to the spec (SPC-4 r34), the peripheral qualifier 9921 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 9922 * 9923 * "A peripheral device having the specified peripheral device type 9924 * is not connected to this logical unit. However, the device 9925 * server is capable of supporting the specified peripheral device 9926 * type on this logical unit." 9927 * 9928 * According to the same spec, the peripheral qualifier 9929 * SID_QUAL_BAD_LU (011b) is used in this scenario: 9930 * 9931 * "The device server is not capable of supporting a peripheral 9932 * device on this logical unit. For this peripheral qualifier the 9933 * peripheral device type shall be set to 1Fh. All other peripheral 9934 * device type values are reserved for this peripheral qualifier." 9935 * 9936 * Given the text, it would seem that we probably want to report that 9937 * the LUN is offline here. There is no LUN connected, but we can 9938 * support a LUN at the given LUN number. 9939 * 9940 * In the real world, though, it sounds like things are a little 9941 * different: 9942 * 9943 * - Linux, when presented with a LUN with the offline peripheral 9944 * qualifier, will create an sg driver instance for it. So when 9945 * you attach it to CTL, you wind up with a ton of sg driver 9946 * instances. (One for every LUN that Linux bothered to probe.) 9947 * Linux does this despite the fact that it issues a REPORT LUNs 9948 * to LUN 0 to get the inventory of supported LUNs. 9949 * 9950 * - There is other anecdotal evidence (from Emulex folks) about 9951 * arrays that use the offline peripheral qualifier for LUNs that 9952 * are on the "passive" path in an active/passive array. 9953 * 9954 * So the solution is provide a hopefully reasonable default 9955 * (return bad/no LUN) and allow the user to change the behavior 9956 * with a tunable/sysctl variable. 9957 */ 9958 if (lun != NULL) 9959 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9960 lun->be_lun->lun_type; 9961 else if (ctl_softc->inquiry_pq_no_lun == 0) 9962 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9963 else 9964 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 9965 9966 /* RMB in byte 2 is 0 */ 9967 inq_ptr->version = SCSI_REV_SPC3; 9968 9969 /* 9970 * According to SAM-3, even if a device only supports a single 9971 * level of LUN addressing, it should still set the HISUP bit: 9972 * 9973 * 4.9.1 Logical unit numbers overview 9974 * 9975 * All logical unit number formats described in this standard are 9976 * hierarchical in structure even when only a single level in that 9977 * hierarchy is used. The HISUP bit shall be set to one in the 9978 * standard INQUIRY data (see SPC-2) when any logical unit number 9979 * format described in this standard is used. Non-hierarchical 9980 * formats are outside the scope of this standard. 9981 * 9982 * Therefore we set the HiSup bit here. 9983 * 9984 * The reponse format is 2, per SPC-3. 9985 */ 9986 inq_ptr->response_format = SID_HiSup | 2; 9987 9988 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 9989 CTL_DEBUG_PRINT(("additional_length = %d\n", 9990 inq_ptr->additional_length)); 9991 9992 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 9993 /* 16 bit addressing */ 9994 if (is_fc == 0) 9995 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 9996 /* XXX set the SID_MultiP bit here if we're actually going to 9997 respond on multiple ports */ 9998 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 9999 10000 /* 16 bit data bus, synchronous transfers */ 10001 /* XXX these flags don't apply for FC */ 10002 if (is_fc == 0) 10003 inq_ptr->flags = SID_WBus16 | SID_Sync; 10004 /* 10005 * XXX KDM do we want to support tagged queueing on the control 10006 * device at all? 10007 */ 10008 if ((lun == NULL) 10009 || (lun->be_lun->lun_type != T_PROCESSOR)) 10010 inq_ptr->flags |= SID_CmdQue; 10011 /* 10012 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 10013 * We have 8 bytes for the vendor name, and 16 bytes for the device 10014 * name and 4 bytes for the revision. 10015 */ 10016 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 10017 strcpy(inq_ptr->vendor, CTL_VENDOR); 10018 } else { 10019 memset(inq_ptr->vendor, ' ', sizeof(inq_ptr->vendor)); 10020 strncpy(inq_ptr->vendor, val, 10021 min(sizeof(inq_ptr->vendor), strlen(val))); 10022 } 10023 if (lun == NULL) { 10024 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10025 } else if ((val = ctl_get_opt(lun->be_lun, "product")) == NULL) { 10026 switch (lun->be_lun->lun_type) { 10027 case T_DIRECT: 10028 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10029 break; 10030 case T_PROCESSOR: 10031 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 10032 break; 10033 default: 10034 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 10035 break; 10036 } 10037 } else { 10038 memset(inq_ptr->product, ' ', sizeof(inq_ptr->product)); 10039 strncpy(inq_ptr->product, val, 10040 min(sizeof(inq_ptr->product), strlen(val))); 10041 } 10042 10043 /* 10044 * XXX make this a macro somewhere so it automatically gets 10045 * incremented when we make changes. 10046 */ 10047 if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "revision")) == NULL) { 10048 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 10049 } else { 10050 memset(inq_ptr->revision, ' ', sizeof(inq_ptr->revision)); 10051 strncpy(inq_ptr->revision, val, 10052 min(sizeof(inq_ptr->revision), strlen(val))); 10053 } 10054 10055 /* 10056 * For parallel SCSI, we support double transition and single 10057 * transition clocking. We also support QAS (Quick Arbitration 10058 * and Selection) and Information Unit transfers on both the 10059 * control and array devices. 10060 */ 10061 if (is_fc == 0) 10062 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 10063 SID_SPI_IUS; 10064 10065 /* SAM-3 */ 10066 scsi_ulto2b(0x0060, inq_ptr->version1); 10067 /* SPC-3 (no version claimed) XXX should we claim a version? */ 10068 scsi_ulto2b(0x0300, inq_ptr->version2); 10069 if (is_fc) { 10070 /* FCP-2 ANSI INCITS.350:2003 */ 10071 scsi_ulto2b(0x0917, inq_ptr->version3); 10072 } else { 10073 /* SPI-4 ANSI INCITS.362:200x */ 10074 scsi_ulto2b(0x0B56, inq_ptr->version3); 10075 } 10076 10077 if (lun == NULL) { 10078 /* SBC-2 (no version claimed) XXX should we claim a version? */ 10079 scsi_ulto2b(0x0320, inq_ptr->version4); 10080 } else { 10081 switch (lun->be_lun->lun_type) { 10082 case T_DIRECT: 10083 /* 10084 * SBC-2 (no version claimed) XXX should we claim a 10085 * version? 10086 */ 10087 scsi_ulto2b(0x0320, inq_ptr->version4); 10088 break; 10089 case T_PROCESSOR: 10090 default: 10091 break; 10092 } 10093 } 10094 10095 ctsio->scsi_status = SCSI_STATUS_OK; 10096 if (ctsio->kern_data_len > 0) { 10097 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 10098 ctsio->be_move_done = ctl_config_move_done; 10099 ctl_datamove((union ctl_io *)ctsio); 10100 } else { 10101 ctsio->io_hdr.status = CTL_SUCCESS; 10102 ctl_done((union ctl_io *)ctsio); 10103 } 10104 10105 return (CTL_RETVAL_COMPLETE); 10106} 10107 10108int 10109ctl_inquiry(struct ctl_scsiio *ctsio) 10110{ 10111 struct scsi_inquiry *cdb; 10112 int retval; 10113 10114 cdb = (struct scsi_inquiry *)ctsio->cdb; 10115 10116 retval = 0; 10117 10118 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 10119 10120 /* 10121 * Right now, we don't support the CmdDt inquiry information. 10122 * This would be nice to support in the future. When we do 10123 * support it, we should change this test so that it checks to make 10124 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 10125 */ 10126#ifdef notyet 10127 if (((cdb->byte2 & SI_EVPD) 10128 && (cdb->byte2 & SI_CMDDT))) 10129#endif 10130 if (cdb->byte2 & SI_CMDDT) { 10131 /* 10132 * Point to the SI_CMDDT bit. We might change this 10133 * when we support SI_CMDDT, but since both bits would be 10134 * "wrong", this should probably just stay as-is then. 10135 */ 10136 ctl_set_invalid_field(ctsio, 10137 /*sks_valid*/ 1, 10138 /*command*/ 1, 10139 /*field*/ 1, 10140 /*bit_valid*/ 1, 10141 /*bit*/ 1); 10142 ctl_done((union ctl_io *)ctsio); 10143 return (CTL_RETVAL_COMPLETE); 10144 } 10145 if (cdb->byte2 & SI_EVPD) 10146 retval = ctl_inquiry_evpd(ctsio); 10147#ifdef notyet 10148 else if (cdb->byte2 & SI_CMDDT) 10149 retval = ctl_inquiry_cmddt(ctsio); 10150#endif 10151 else 10152 retval = ctl_inquiry_std(ctsio); 10153 10154 return (retval); 10155} 10156 10157/* 10158 * For known CDB types, parse the LBA and length. 10159 */ 10160static int 10161ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 10162{ 10163 if (io->io_hdr.io_type != CTL_IO_SCSI) 10164 return (1); 10165 10166 switch (io->scsiio.cdb[0]) { 10167 case COMPARE_AND_WRITE: { 10168 struct scsi_compare_and_write *cdb; 10169 10170 cdb = (struct scsi_compare_and_write *)io->scsiio.cdb; 10171 10172 *lba = scsi_8btou64(cdb->addr); 10173 *len = cdb->length; 10174 break; 10175 } 10176 case READ_6: 10177 case WRITE_6: { 10178 struct scsi_rw_6 *cdb; 10179 10180 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 10181 10182 *lba = scsi_3btoul(cdb->addr); 10183 /* only 5 bits are valid in the most significant address byte */ 10184 *lba &= 0x1fffff; 10185 *len = cdb->length; 10186 break; 10187 } 10188 case READ_10: 10189 case WRITE_10: { 10190 struct scsi_rw_10 *cdb; 10191 10192 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 10193 10194 *lba = scsi_4btoul(cdb->addr); 10195 *len = scsi_2btoul(cdb->length); 10196 break; 10197 } 10198 case WRITE_VERIFY_10: { 10199 struct scsi_write_verify_10 *cdb; 10200 10201 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 10202 10203 *lba = scsi_4btoul(cdb->addr); 10204 *len = scsi_2btoul(cdb->length); 10205 break; 10206 } 10207 case READ_12: 10208 case WRITE_12: { 10209 struct scsi_rw_12 *cdb; 10210 10211 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 10212 10213 *lba = scsi_4btoul(cdb->addr); 10214 *len = scsi_4btoul(cdb->length); 10215 break; 10216 } 10217 case WRITE_VERIFY_12: { 10218 struct scsi_write_verify_12 *cdb; 10219 10220 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 10221 10222 *lba = scsi_4btoul(cdb->addr); 10223 *len = scsi_4btoul(cdb->length); 10224 break; 10225 } 10226 case READ_16: 10227 case WRITE_16: { 10228 struct scsi_rw_16 *cdb; 10229 10230 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 10231 10232 *lba = scsi_8btou64(cdb->addr); 10233 *len = scsi_4btoul(cdb->length); 10234 break; 10235 } 10236 case WRITE_VERIFY_16: { 10237 struct scsi_write_verify_16 *cdb; 10238 10239 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 10240 10241 10242 *lba = scsi_8btou64(cdb->addr); 10243 *len = scsi_4btoul(cdb->length); 10244 break; 10245 } 10246 case WRITE_SAME_10: { 10247 struct scsi_write_same_10 *cdb; 10248 10249 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 10250 10251 *lba = scsi_4btoul(cdb->addr); 10252 *len = scsi_2btoul(cdb->length); 10253 break; 10254 } 10255 case WRITE_SAME_16: { 10256 struct scsi_write_same_16 *cdb; 10257 10258 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 10259 10260 *lba = scsi_8btou64(cdb->addr); 10261 *len = scsi_4btoul(cdb->length); 10262 break; 10263 } 10264 case VERIFY_10: { 10265 struct scsi_verify_10 *cdb; 10266 10267 cdb = (struct scsi_verify_10 *)io->scsiio.cdb; 10268 10269 *lba = scsi_4btoul(cdb->addr); 10270 *len = scsi_2btoul(cdb->length); 10271 break; 10272 } 10273 case VERIFY_12: { 10274 struct scsi_verify_12 *cdb; 10275 10276 cdb = (struct scsi_verify_12 *)io->scsiio.cdb; 10277 10278 *lba = scsi_4btoul(cdb->addr); 10279 *len = scsi_4btoul(cdb->length); 10280 break; 10281 } 10282 case VERIFY_16: { 10283 struct scsi_verify_16 *cdb; 10284 10285 cdb = (struct scsi_verify_16 *)io->scsiio.cdb; 10286 10287 *lba = scsi_8btou64(cdb->addr); 10288 *len = scsi_4btoul(cdb->length); 10289 break; 10290 } 10291 default: 10292 return (1); 10293 break; /* NOTREACHED */ 10294 } 10295 10296 return (0); 10297} 10298 10299static ctl_action 10300ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10301{ 10302 uint64_t endlba1, endlba2; 10303 10304 endlba1 = lba1 + len1 - 1; 10305 endlba2 = lba2 + len2 - 1; 10306 10307 if ((endlba1 < lba2) 10308 || (endlba2 < lba1)) 10309 return (CTL_ACTION_PASS); 10310 else 10311 return (CTL_ACTION_BLOCK); 10312} 10313 10314static ctl_action 10315ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10316{ 10317 uint64_t lba1, lba2; 10318 uint32_t len1, len2; 10319 int retval; 10320 10321 retval = ctl_get_lba_len(io1, &lba1, &len1); 10322 if (retval != 0) 10323 return (CTL_ACTION_ERROR); 10324 10325 retval = ctl_get_lba_len(io2, &lba2, &len2); 10326 if (retval != 0) 10327 return (CTL_ACTION_ERROR); 10328 10329 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10330} 10331 10332static ctl_action 10333ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10334{ 10335 struct ctl_cmd_entry *pending_entry, *ooa_entry; 10336 ctl_serialize_action *serialize_row; 10337 10338 /* 10339 * The initiator attempted multiple untagged commands at the same 10340 * time. Can't do that. 10341 */ 10342 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10343 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10344 && ((pending_io->io_hdr.nexus.targ_port == 10345 ooa_io->io_hdr.nexus.targ_port) 10346 && (pending_io->io_hdr.nexus.initid.id == 10347 ooa_io->io_hdr.nexus.initid.id)) 10348 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10349 return (CTL_ACTION_OVERLAP); 10350 10351 /* 10352 * The initiator attempted to send multiple tagged commands with 10353 * the same ID. (It's fine if different initiators have the same 10354 * tag ID.) 10355 * 10356 * Even if all of those conditions are true, we don't kill the I/O 10357 * if the command ahead of us has been aborted. We won't end up 10358 * sending it to the FETD, and it's perfectly legal to resend a 10359 * command with the same tag number as long as the previous 10360 * instance of this tag number has been aborted somehow. 10361 */ 10362 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10363 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10364 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10365 && ((pending_io->io_hdr.nexus.targ_port == 10366 ooa_io->io_hdr.nexus.targ_port) 10367 && (pending_io->io_hdr.nexus.initid.id == 10368 ooa_io->io_hdr.nexus.initid.id)) 10369 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10370 return (CTL_ACTION_OVERLAP_TAG); 10371 10372 /* 10373 * If we get a head of queue tag, SAM-3 says that we should 10374 * immediately execute it. 10375 * 10376 * What happens if this command would normally block for some other 10377 * reason? e.g. a request sense with a head of queue tag 10378 * immediately after a write. Normally that would block, but this 10379 * will result in its getting executed immediately... 10380 * 10381 * We currently return "pass" instead of "skip", so we'll end up 10382 * going through the rest of the queue to check for overlapped tags. 10383 * 10384 * XXX KDM check for other types of blockage first?? 10385 */ 10386 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10387 return (CTL_ACTION_PASS); 10388 10389 /* 10390 * Ordered tags have to block until all items ahead of them 10391 * have completed. If we get called with an ordered tag, we always 10392 * block, if something else is ahead of us in the queue. 10393 */ 10394 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10395 return (CTL_ACTION_BLOCK); 10396 10397 /* 10398 * Simple tags get blocked until all head of queue and ordered tags 10399 * ahead of them have completed. I'm lumping untagged commands in 10400 * with simple tags here. XXX KDM is that the right thing to do? 10401 */ 10402 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10403 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10404 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10405 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10406 return (CTL_ACTION_BLOCK); 10407 10408 pending_entry = &ctl_cmd_table[pending_io->scsiio.cdb[0]]; 10409 ooa_entry = &ctl_cmd_table[ooa_io->scsiio.cdb[0]]; 10410 10411 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10412 10413 switch (serialize_row[pending_entry->seridx]) { 10414 case CTL_SER_BLOCK: 10415 return (CTL_ACTION_BLOCK); 10416 break; /* NOTREACHED */ 10417 case CTL_SER_EXTENT: 10418 return (ctl_extent_check(pending_io, ooa_io)); 10419 break; /* NOTREACHED */ 10420 case CTL_SER_PASS: 10421 return (CTL_ACTION_PASS); 10422 break; /* NOTREACHED */ 10423 case CTL_SER_SKIP: 10424 return (CTL_ACTION_SKIP); 10425 break; 10426 default: 10427 panic("invalid serialization value %d", 10428 serialize_row[pending_entry->seridx]); 10429 break; /* NOTREACHED */ 10430 } 10431 10432 return (CTL_ACTION_ERROR); 10433} 10434 10435/* 10436 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10437 * Assumptions: 10438 * - pending_io is generally either incoming, or on the blocked queue 10439 * - starting I/O is the I/O we want to start the check with. 10440 */ 10441static ctl_action 10442ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10443 union ctl_io *starting_io) 10444{ 10445 union ctl_io *ooa_io; 10446 ctl_action action; 10447 10448 mtx_assert(&lun->lun_lock, MA_OWNED); 10449 10450 /* 10451 * Run back along the OOA queue, starting with the current 10452 * blocked I/O and going through every I/O before it on the 10453 * queue. If starting_io is NULL, we'll just end up returning 10454 * CTL_ACTION_PASS. 10455 */ 10456 for (ooa_io = starting_io; ooa_io != NULL; 10457 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10458 ooa_links)){ 10459 10460 /* 10461 * This routine just checks to see whether 10462 * cur_blocked is blocked by ooa_io, which is ahead 10463 * of it in the queue. It doesn't queue/dequeue 10464 * cur_blocked. 10465 */ 10466 action = ctl_check_for_blockage(pending_io, ooa_io); 10467 switch (action) { 10468 case CTL_ACTION_BLOCK: 10469 case CTL_ACTION_OVERLAP: 10470 case CTL_ACTION_OVERLAP_TAG: 10471 case CTL_ACTION_SKIP: 10472 case CTL_ACTION_ERROR: 10473 return (action); 10474 break; /* NOTREACHED */ 10475 case CTL_ACTION_PASS: 10476 break; 10477 default: 10478 panic("invalid action %d", action); 10479 break; /* NOTREACHED */ 10480 } 10481 } 10482 10483 return (CTL_ACTION_PASS); 10484} 10485 10486/* 10487 * Assumptions: 10488 * - An I/O has just completed, and has been removed from the per-LUN OOA 10489 * queue, so some items on the blocked queue may now be unblocked. 10490 */ 10491static int 10492ctl_check_blocked(struct ctl_lun *lun) 10493{ 10494 union ctl_io *cur_blocked, *next_blocked; 10495 10496 mtx_assert(&lun->lun_lock, MA_OWNED); 10497 10498 /* 10499 * Run forward from the head of the blocked queue, checking each 10500 * entry against the I/Os prior to it on the OOA queue to see if 10501 * there is still any blockage. 10502 * 10503 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10504 * with our removing a variable on it while it is traversing the 10505 * list. 10506 */ 10507 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10508 cur_blocked != NULL; cur_blocked = next_blocked) { 10509 union ctl_io *prev_ooa; 10510 ctl_action action; 10511 10512 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10513 blocked_links); 10514 10515 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10516 ctl_ooaq, ooa_links); 10517 10518 /* 10519 * If cur_blocked happens to be the first item in the OOA 10520 * queue now, prev_ooa will be NULL, and the action 10521 * returned will just be CTL_ACTION_PASS. 10522 */ 10523 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10524 10525 switch (action) { 10526 case CTL_ACTION_BLOCK: 10527 /* Nothing to do here, still blocked */ 10528 break; 10529 case CTL_ACTION_OVERLAP: 10530 case CTL_ACTION_OVERLAP_TAG: 10531 /* 10532 * This shouldn't happen! In theory we've already 10533 * checked this command for overlap... 10534 */ 10535 break; 10536 case CTL_ACTION_PASS: 10537 case CTL_ACTION_SKIP: { 10538 struct ctl_softc *softc; 10539 struct ctl_cmd_entry *entry; 10540 uint32_t initidx; 10541 uint8_t opcode; 10542 int isc_retval; 10543 10544 /* 10545 * The skip case shouldn't happen, this transaction 10546 * should have never made it onto the blocked queue. 10547 */ 10548 /* 10549 * This I/O is no longer blocked, we can remove it 10550 * from the blocked queue. Since this is a TAILQ 10551 * (doubly linked list), we can do O(1) removals 10552 * from any place on the list. 10553 */ 10554 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10555 blocked_links); 10556 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10557 10558 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10559 /* 10560 * Need to send IO back to original side to 10561 * run 10562 */ 10563 union ctl_ha_msg msg_info; 10564 10565 msg_info.hdr.original_sc = 10566 cur_blocked->io_hdr.original_sc; 10567 msg_info.hdr.serializing_sc = cur_blocked; 10568 msg_info.hdr.msg_type = CTL_MSG_R2R; 10569 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10570 &msg_info, sizeof(msg_info), 0)) > 10571 CTL_HA_STATUS_SUCCESS) { 10572 printf("CTL:Check Blocked error from " 10573 "ctl_ha_msg_send %d\n", 10574 isc_retval); 10575 } 10576 break; 10577 } 10578 opcode = cur_blocked->scsiio.cdb[0]; 10579 entry = &ctl_cmd_table[opcode]; 10580 softc = control_softc; 10581 10582 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10583 10584 /* 10585 * Check this I/O for LUN state changes that may 10586 * have happened while this command was blocked. 10587 * The LUN state may have been changed by a command 10588 * ahead of us in the queue, so we need to re-check 10589 * for any states that can be caused by SCSI 10590 * commands. 10591 */ 10592 if (ctl_scsiio_lun_check(softc, lun, entry, 10593 &cur_blocked->scsiio) == 0) { 10594 cur_blocked->io_hdr.flags |= 10595 CTL_FLAG_IS_WAS_ON_RTR; 10596 ctl_enqueue_rtr(cur_blocked); 10597 } else 10598 ctl_done(cur_blocked); 10599 break; 10600 } 10601 default: 10602 /* 10603 * This probably shouldn't happen -- we shouldn't 10604 * get CTL_ACTION_ERROR, or anything else. 10605 */ 10606 break; 10607 } 10608 } 10609 10610 return (CTL_RETVAL_COMPLETE); 10611} 10612 10613/* 10614 * This routine (with one exception) checks LUN flags that can be set by 10615 * commands ahead of us in the OOA queue. These flags have to be checked 10616 * when a command initially comes in, and when we pull a command off the 10617 * blocked queue and are preparing to execute it. The reason we have to 10618 * check these flags for commands on the blocked queue is that the LUN 10619 * state may have been changed by a command ahead of us while we're on the 10620 * blocked queue. 10621 * 10622 * Ordering is somewhat important with these checks, so please pay 10623 * careful attention to the placement of any new checks. 10624 */ 10625static int 10626ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10627 struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10628{ 10629 int retval; 10630 10631 retval = 0; 10632 10633 mtx_assert(&lun->lun_lock, MA_OWNED); 10634 10635 /* 10636 * If this shelf is a secondary shelf controller, we have to reject 10637 * any media access commands. 10638 */ 10639#if 0 10640 /* No longer needed for HA */ 10641 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10642 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10643 ctl_set_lun_standby(ctsio); 10644 retval = 1; 10645 goto bailout; 10646 } 10647#endif 10648 10649 /* 10650 * Check for a reservation conflict. If this command isn't allowed 10651 * even on reserved LUNs, and if this initiator isn't the one who 10652 * reserved us, reject the command with a reservation conflict. 10653 */ 10654 if ((lun->flags & CTL_LUN_RESERVED) 10655 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10656 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10657 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10658 || (ctsio->io_hdr.nexus.targ_target.id != 10659 lun->rsv_nexus.targ_target.id)) { 10660 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10661 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10662 retval = 1; 10663 goto bailout; 10664 } 10665 } 10666 10667 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10668 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10669 uint32_t residx; 10670 10671 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10672 /* 10673 * if we aren't registered or it's a res holder type 10674 * reservation and this isn't the res holder then set a 10675 * conflict. 10676 * NOTE: Commands which might be allowed on write exclusive 10677 * type reservations are checked in the particular command 10678 * for a conflict. Read and SSU are the only ones. 10679 */ 10680 if (!lun->per_res[residx].registered 10681 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10682 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10683 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10684 retval = 1; 10685 goto bailout; 10686 } 10687 10688 } 10689 10690 if ((lun->flags & CTL_LUN_OFFLINE) 10691 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10692 ctl_set_lun_not_ready(ctsio); 10693 retval = 1; 10694 goto bailout; 10695 } 10696 10697 /* 10698 * If the LUN is stopped, see if this particular command is allowed 10699 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10700 */ 10701 if ((lun->flags & CTL_LUN_STOPPED) 10702 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10703 /* "Logical unit not ready, initializing cmd. required" */ 10704 ctl_set_lun_stopped(ctsio); 10705 retval = 1; 10706 goto bailout; 10707 } 10708 10709 if ((lun->flags & CTL_LUN_INOPERABLE) 10710 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10711 /* "Medium format corrupted" */ 10712 ctl_set_medium_format_corrupted(ctsio); 10713 retval = 1; 10714 goto bailout; 10715 } 10716 10717bailout: 10718 return (retval); 10719 10720} 10721 10722static void 10723ctl_failover_io(union ctl_io *io, int have_lock) 10724{ 10725 ctl_set_busy(&io->scsiio); 10726 ctl_done(io); 10727} 10728 10729static void 10730ctl_failover(void) 10731{ 10732 struct ctl_lun *lun; 10733 struct ctl_softc *ctl_softc; 10734 union ctl_io *next_io, *pending_io; 10735 union ctl_io *io; 10736 int lun_idx; 10737 int i; 10738 10739 ctl_softc = control_softc; 10740 10741 mtx_lock(&ctl_softc->ctl_lock); 10742 /* 10743 * Remove any cmds from the other SC from the rtr queue. These 10744 * will obviously only be for LUNs for which we're the primary. 10745 * We can't send status or get/send data for these commands. 10746 * Since they haven't been executed yet, we can just remove them. 10747 * We'll either abort them or delete them below, depending on 10748 * which HA mode we're in. 10749 */ 10750#ifdef notyet 10751 mtx_lock(&ctl_softc->queue_lock); 10752 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10753 io != NULL; io = next_io) { 10754 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10755 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10756 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10757 ctl_io_hdr, links); 10758 } 10759 mtx_unlock(&ctl_softc->queue_lock); 10760#endif 10761 10762 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10763 lun = ctl_softc->ctl_luns[lun_idx]; 10764 if (lun==NULL) 10765 continue; 10766 10767 /* 10768 * Processor LUNs are primary on both sides. 10769 * XXX will this always be true? 10770 */ 10771 if (lun->be_lun->lun_type == T_PROCESSOR) 10772 continue; 10773 10774 if ((lun->flags & CTL_LUN_PRIMARY_SC) 10775 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10776 printf("FAILOVER: primary lun %d\n", lun_idx); 10777 /* 10778 * Remove all commands from the other SC. First from the 10779 * blocked queue then from the ooa queue. Once we have 10780 * removed them. Call ctl_check_blocked to see if there 10781 * is anything that can run. 10782 */ 10783 for (io = (union ctl_io *)TAILQ_FIRST( 10784 &lun->blocked_queue); io != NULL; io = next_io) { 10785 10786 next_io = (union ctl_io *)TAILQ_NEXT( 10787 &io->io_hdr, blocked_links); 10788 10789 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10790 TAILQ_REMOVE(&lun->blocked_queue, 10791 &io->io_hdr,blocked_links); 10792 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10793 TAILQ_REMOVE(&lun->ooa_queue, 10794 &io->io_hdr, ooa_links); 10795 10796 ctl_free_io(io); 10797 } 10798 } 10799 10800 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10801 io != NULL; io = next_io) { 10802 10803 next_io = (union ctl_io *)TAILQ_NEXT( 10804 &io->io_hdr, ooa_links); 10805 10806 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 10807 10808 TAILQ_REMOVE(&lun->ooa_queue, 10809 &io->io_hdr, 10810 ooa_links); 10811 10812 ctl_free_io(io); 10813 } 10814 } 10815 ctl_check_blocked(lun); 10816 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 10817 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10818 10819 printf("FAILOVER: primary lun %d\n", lun_idx); 10820 /* 10821 * Abort all commands from the other SC. We can't 10822 * send status back for them now. These should get 10823 * cleaned up when they are completed or come out 10824 * for a datamove operation. 10825 */ 10826 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 10827 io != NULL; io = next_io) { 10828 next_io = (union ctl_io *)TAILQ_NEXT( 10829 &io->io_hdr, ooa_links); 10830 10831 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10832 io->io_hdr.flags |= CTL_FLAG_ABORT; 10833 } 10834 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10835 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 10836 10837 printf("FAILOVER: secondary lun %d\n", lun_idx); 10838 10839 lun->flags |= CTL_LUN_PRIMARY_SC; 10840 10841 /* 10842 * We send all I/O that was sent to this controller 10843 * and redirected to the other side back with 10844 * busy status, and have the initiator retry it. 10845 * Figuring out how much data has been transferred, 10846 * etc. and picking up where we left off would be 10847 * very tricky. 10848 * 10849 * XXX KDM need to remove I/O from the blocked 10850 * queue as well! 10851 */ 10852 for (pending_io = (union ctl_io *)TAILQ_FIRST( 10853 &lun->ooa_queue); pending_io != NULL; 10854 pending_io = next_io) { 10855 10856 next_io = (union ctl_io *)TAILQ_NEXT( 10857 &pending_io->io_hdr, ooa_links); 10858 10859 pending_io->io_hdr.flags &= 10860 ~CTL_FLAG_SENT_2OTHER_SC; 10861 10862 if (pending_io->io_hdr.flags & 10863 CTL_FLAG_IO_ACTIVE) { 10864 pending_io->io_hdr.flags |= 10865 CTL_FLAG_FAILOVER; 10866 } else { 10867 ctl_set_busy(&pending_io->scsiio); 10868 ctl_done(pending_io); 10869 } 10870 } 10871 10872 /* 10873 * Build Unit Attention 10874 */ 10875 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10876 lun->pending_sense[i].ua_pending |= 10877 CTL_UA_ASYM_ACC_CHANGE; 10878 } 10879 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 10880 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 10881 printf("FAILOVER: secondary lun %d\n", lun_idx); 10882 /* 10883 * if the first io on the OOA is not on the RtR queue 10884 * add it. 10885 */ 10886 lun->flags |= CTL_LUN_PRIMARY_SC; 10887 10888 pending_io = (union ctl_io *)TAILQ_FIRST( 10889 &lun->ooa_queue); 10890 if (pending_io==NULL) { 10891 printf("Nothing on OOA queue\n"); 10892 continue; 10893 } 10894 10895 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 10896 if ((pending_io->io_hdr.flags & 10897 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 10898 pending_io->io_hdr.flags |= 10899 CTL_FLAG_IS_WAS_ON_RTR; 10900 ctl_enqueue_rtr(pending_io); 10901 } 10902#if 0 10903 else 10904 { 10905 printf("Tag 0x%04x is running\n", 10906 pending_io->scsiio.tag_num); 10907 } 10908#endif 10909 10910 next_io = (union ctl_io *)TAILQ_NEXT( 10911 &pending_io->io_hdr, ooa_links); 10912 for (pending_io=next_io; pending_io != NULL; 10913 pending_io = next_io) { 10914 pending_io->io_hdr.flags &= 10915 ~CTL_FLAG_SENT_2OTHER_SC; 10916 next_io = (union ctl_io *)TAILQ_NEXT( 10917 &pending_io->io_hdr, ooa_links); 10918 if (pending_io->io_hdr.flags & 10919 CTL_FLAG_IS_WAS_ON_RTR) { 10920#if 0 10921 printf("Tag 0x%04x is running\n", 10922 pending_io->scsiio.tag_num); 10923#endif 10924 continue; 10925 } 10926 10927 switch (ctl_check_ooa(lun, pending_io, 10928 (union ctl_io *)TAILQ_PREV( 10929 &pending_io->io_hdr, ctl_ooaq, 10930 ooa_links))) { 10931 10932 case CTL_ACTION_BLOCK: 10933 TAILQ_INSERT_TAIL(&lun->blocked_queue, 10934 &pending_io->io_hdr, 10935 blocked_links); 10936 pending_io->io_hdr.flags |= 10937 CTL_FLAG_BLOCKED; 10938 break; 10939 case CTL_ACTION_PASS: 10940 case CTL_ACTION_SKIP: 10941 pending_io->io_hdr.flags |= 10942 CTL_FLAG_IS_WAS_ON_RTR; 10943 ctl_enqueue_rtr(pending_io); 10944 break; 10945 case CTL_ACTION_OVERLAP: 10946 ctl_set_overlapped_cmd( 10947 (struct ctl_scsiio *)pending_io); 10948 ctl_done(pending_io); 10949 break; 10950 case CTL_ACTION_OVERLAP_TAG: 10951 ctl_set_overlapped_tag( 10952 (struct ctl_scsiio *)pending_io, 10953 pending_io->scsiio.tag_num & 0xff); 10954 ctl_done(pending_io); 10955 break; 10956 case CTL_ACTION_ERROR: 10957 default: 10958 ctl_set_internal_failure( 10959 (struct ctl_scsiio *)pending_io, 10960 0, // sks_valid 10961 0); //retry count 10962 ctl_done(pending_io); 10963 break; 10964 } 10965 } 10966 10967 /* 10968 * Build Unit Attention 10969 */ 10970 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 10971 lun->pending_sense[i].ua_pending |= 10972 CTL_UA_ASYM_ACC_CHANGE; 10973 } 10974 } else { 10975 panic("Unhandled HA mode failover, LUN flags = %#x, " 10976 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 10977 } 10978 } 10979 ctl_pause_rtr = 0; 10980 mtx_unlock(&ctl_softc->ctl_lock); 10981} 10982 10983static int 10984ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 10985{ 10986 struct ctl_lun *lun; 10987 struct ctl_cmd_entry *entry; 10988 uint8_t opcode; 10989 uint32_t initidx, targ_lun; 10990 int retval; 10991 10992 retval = 0; 10993 10994 lun = NULL; 10995 10996 opcode = ctsio->cdb[0]; 10997 10998 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 10999 if ((targ_lun < CTL_MAX_LUNS) 11000 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 11001 lun = ctl_softc->ctl_luns[targ_lun]; 11002 /* 11003 * If the LUN is invalid, pretend that it doesn't exist. 11004 * It will go away as soon as all pending I/O has been 11005 * completed. 11006 */ 11007 if (lun->flags & CTL_LUN_DISABLED) { 11008 lun = NULL; 11009 } else { 11010 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 11011 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 11012 lun->be_lun; 11013 if (lun->be_lun->lun_type == T_PROCESSOR) { 11014 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 11015 } 11016 } 11017 } else { 11018 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 11019 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 11020 } 11021 11022 entry = &ctl_cmd_table[opcode]; 11023 11024 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 11025 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 11026 11027 /* 11028 * Check to see whether we can send this command to LUNs that don't 11029 * exist. This should pretty much only be the case for inquiry 11030 * and request sense. Further checks, below, really require having 11031 * a LUN, so we can't really check the command anymore. Just put 11032 * it on the rtr queue. 11033 */ 11034 if (lun == NULL) { 11035 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) { 11036 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11037 ctl_enqueue_rtr((union ctl_io *)ctsio); 11038 return (retval); 11039 } 11040 11041 ctl_set_unsupported_lun(ctsio); 11042 ctl_done((union ctl_io *)ctsio); 11043 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 11044 return (retval); 11045 } else { 11046 mtx_lock(&lun->lun_lock); 11047 11048 /* 11049 * Every I/O goes into the OOA queue for a particular LUN, and 11050 * stays there until completion. 11051 */ 11052 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 11053 11054 /* 11055 * Make sure we support this particular command on this LUN. 11056 * e.g., we don't support writes to the control LUN. 11057 */ 11058 switch (lun->be_lun->lun_type) { 11059 case T_PROCESSOR: 11060 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) 11061 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11062 == 0)) { 11063 mtx_unlock(&lun->lun_lock); 11064 ctl_set_invalid_opcode(ctsio); 11065 ctl_done((union ctl_io *)ctsio); 11066 return (retval); 11067 } 11068 break; 11069 case T_DIRECT: 11070 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) 11071 && ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) 11072 == 0)){ 11073 mtx_unlock(&lun->lun_lock); 11074 ctl_set_invalid_opcode(ctsio); 11075 ctl_done((union ctl_io *)ctsio); 11076 return (retval); 11077 } 11078 break; 11079 default: 11080 mtx_unlock(&lun->lun_lock); 11081 panic("Unsupported CTL LUN type %d\n", 11082 lun->be_lun->lun_type); 11083 } 11084 } 11085 11086 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 11087 11088 /* 11089 * If we've got a request sense, it'll clear the contingent 11090 * allegiance condition. Otherwise, if we have a CA condition for 11091 * this initiator, clear it, because it sent down a command other 11092 * than request sense. 11093 */ 11094 if ((opcode != REQUEST_SENSE) 11095 && (ctl_is_set(lun->have_ca, initidx))) 11096 ctl_clear_mask(lun->have_ca, initidx); 11097 11098 /* 11099 * If the command has this flag set, it handles its own unit 11100 * attention reporting, we shouldn't do anything. Otherwise we 11101 * check for any pending unit attentions, and send them back to the 11102 * initiator. We only do this when a command initially comes in, 11103 * not when we pull it off the blocked queue. 11104 * 11105 * According to SAM-3, section 5.3.2, the order that things get 11106 * presented back to the host is basically unit attentions caused 11107 * by some sort of reset event, busy status, reservation conflicts 11108 * or task set full, and finally any other status. 11109 * 11110 * One issue here is that some of the unit attentions we report 11111 * don't fall into the "reset" category (e.g. "reported luns data 11112 * has changed"). So reporting it here, before the reservation 11113 * check, may be technically wrong. I guess the only thing to do 11114 * would be to check for and report the reset events here, and then 11115 * check for the other unit attention types after we check for a 11116 * reservation conflict. 11117 * 11118 * XXX KDM need to fix this 11119 */ 11120 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 11121 ctl_ua_type ua_type; 11122 11123 ua_type = lun->pending_sense[initidx].ua_pending; 11124 if (ua_type != CTL_UA_NONE) { 11125 scsi_sense_data_type sense_format; 11126 11127 if (lun != NULL) 11128 sense_format = (lun->flags & 11129 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 11130 SSD_TYPE_FIXED; 11131 else 11132 sense_format = SSD_TYPE_FIXED; 11133 11134 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 11135 sense_format); 11136 if (ua_type != CTL_UA_NONE) { 11137 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 11138 ctsio->io_hdr.status = CTL_SCSI_ERROR | 11139 CTL_AUTOSENSE; 11140 ctsio->sense_len = SSD_FULL_SIZE; 11141 lun->pending_sense[initidx].ua_pending &= 11142 ~ua_type; 11143 mtx_unlock(&lun->lun_lock); 11144 ctl_done((union ctl_io *)ctsio); 11145 return (retval); 11146 } 11147 } 11148 } 11149 11150 11151 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 11152 mtx_unlock(&lun->lun_lock); 11153 ctl_done((union ctl_io *)ctsio); 11154 return (retval); 11155 } 11156 11157 /* 11158 * XXX CHD this is where we want to send IO to other side if 11159 * this LUN is secondary on this SC. We will need to make a copy 11160 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 11161 * the copy we send as FROM_OTHER. 11162 * We also need to stuff the address of the original IO so we can 11163 * find it easily. Something similar will need be done on the other 11164 * side so when we are done we can find the copy. 11165 */ 11166 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 11167 union ctl_ha_msg msg_info; 11168 int isc_retval; 11169 11170 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11171 11172 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 11173 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 11174#if 0 11175 printf("1. ctsio %p\n", ctsio); 11176#endif 11177 msg_info.hdr.serializing_sc = NULL; 11178 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 11179 msg_info.scsi.tag_num = ctsio->tag_num; 11180 msg_info.scsi.tag_type = ctsio->tag_type; 11181 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 11182 11183 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11184 11185 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11186 (void *)&msg_info, sizeof(msg_info), 0)) > 11187 CTL_HA_STATUS_SUCCESS) { 11188 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 11189 isc_retval); 11190 printf("CTL:opcode is %x\n",opcode); 11191 } else { 11192#if 0 11193 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 11194#endif 11195 } 11196 11197 /* 11198 * XXX KDM this I/O is off the incoming queue, but hasn't 11199 * been inserted on any other queue. We may need to come 11200 * up with a holding queue while we wait for serialization 11201 * so that we have an idea of what we're waiting for from 11202 * the other side. 11203 */ 11204 mtx_unlock(&lun->lun_lock); 11205 return (retval); 11206 } 11207 11208 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 11209 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 11210 ctl_ooaq, ooa_links))) { 11211 case CTL_ACTION_BLOCK: 11212 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 11213 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 11214 blocked_links); 11215 mtx_unlock(&lun->lun_lock); 11216 return (retval); 11217 case CTL_ACTION_PASS: 11218 case CTL_ACTION_SKIP: 11219 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11220 mtx_unlock(&lun->lun_lock); 11221 ctl_enqueue_rtr((union ctl_io *)ctsio); 11222 break; 11223 case CTL_ACTION_OVERLAP: 11224 mtx_unlock(&lun->lun_lock); 11225 ctl_set_overlapped_cmd(ctsio); 11226 ctl_done((union ctl_io *)ctsio); 11227 break; 11228 case CTL_ACTION_OVERLAP_TAG: 11229 mtx_unlock(&lun->lun_lock); 11230 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 11231 ctl_done((union ctl_io *)ctsio); 11232 break; 11233 case CTL_ACTION_ERROR: 11234 default: 11235 mtx_unlock(&lun->lun_lock); 11236 ctl_set_internal_failure(ctsio, 11237 /*sks_valid*/ 0, 11238 /*retry_count*/ 0); 11239 ctl_done((union ctl_io *)ctsio); 11240 break; 11241 } 11242 return (retval); 11243} 11244 11245static int 11246ctl_scsiio(struct ctl_scsiio *ctsio) 11247{ 11248 int retval; 11249 struct ctl_cmd_entry *entry; 11250 11251 retval = CTL_RETVAL_COMPLETE; 11252 11253 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 11254 11255 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11256 11257 /* 11258 * If this I/O has been aborted, just send it straight to 11259 * ctl_done() without executing it. 11260 */ 11261 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11262 ctl_done((union ctl_io *)ctsio); 11263 goto bailout; 11264 } 11265 11266 /* 11267 * All the checks should have been handled by ctl_scsiio_precheck(). 11268 * We should be clear now to just execute the I/O. 11269 */ 11270 retval = entry->execute(ctsio); 11271 11272bailout: 11273 return (retval); 11274} 11275 11276/* 11277 * Since we only implement one target right now, a bus reset simply resets 11278 * our single target. 11279 */ 11280static int 11281ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11282{ 11283 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11284} 11285 11286static int 11287ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11288 ctl_ua_type ua_type) 11289{ 11290 struct ctl_lun *lun; 11291 int retval; 11292 11293 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11294 union ctl_ha_msg msg_info; 11295 11296 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11297 msg_info.hdr.nexus = io->io_hdr.nexus; 11298 if (ua_type==CTL_UA_TARG_RESET) 11299 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11300 else 11301 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11302 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11303 msg_info.hdr.original_sc = NULL; 11304 msg_info.hdr.serializing_sc = NULL; 11305 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11306 (void *)&msg_info, sizeof(msg_info), 0)) { 11307 } 11308 } 11309 retval = 0; 11310 11311 mtx_lock(&ctl_softc->ctl_lock); 11312 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11313 retval += ctl_lun_reset(lun, io, ua_type); 11314 mtx_unlock(&ctl_softc->ctl_lock); 11315 11316 return (retval); 11317} 11318 11319/* 11320 * The LUN should always be set. The I/O is optional, and is used to 11321 * distinguish between I/Os sent by this initiator, and by other 11322 * initiators. We set unit attention for initiators other than this one. 11323 * SAM-3 is vague on this point. It does say that a unit attention should 11324 * be established for other initiators when a LUN is reset (see section 11325 * 5.7.3), but it doesn't specifically say that the unit attention should 11326 * be established for this particular initiator when a LUN is reset. Here 11327 * is the relevant text, from SAM-3 rev 8: 11328 * 11329 * 5.7.2 When a SCSI initiator port aborts its own tasks 11330 * 11331 * When a SCSI initiator port causes its own task(s) to be aborted, no 11332 * notification that the task(s) have been aborted shall be returned to 11333 * the SCSI initiator port other than the completion response for the 11334 * command or task management function action that caused the task(s) to 11335 * be aborted and notification(s) associated with related effects of the 11336 * action (e.g., a reset unit attention condition). 11337 * 11338 * XXX KDM for now, we're setting unit attention for all initiators. 11339 */ 11340static int 11341ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11342{ 11343 union ctl_io *xio; 11344#if 0 11345 uint32_t initindex; 11346#endif 11347 int i; 11348 11349 mtx_lock(&lun->lun_lock); 11350 /* 11351 * Run through the OOA queue and abort each I/O. 11352 */ 11353#if 0 11354 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11355#endif 11356 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11357 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11358 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11359 } 11360 11361 /* 11362 * This version sets unit attention for every 11363 */ 11364#if 0 11365 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11366 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11367 if (initindex == i) 11368 continue; 11369 lun->pending_sense[i].ua_pending |= ua_type; 11370 } 11371#endif 11372 11373 /* 11374 * A reset (any kind, really) clears reservations established with 11375 * RESERVE/RELEASE. It does not clear reservations established 11376 * with PERSISTENT RESERVE OUT, but we don't support that at the 11377 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11378 * reservations made with the RESERVE/RELEASE commands, because 11379 * those commands are obsolete in SPC-3. 11380 */ 11381 lun->flags &= ~CTL_LUN_RESERVED; 11382 11383 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11384 ctl_clear_mask(lun->have_ca, i); 11385 lun->pending_sense[i].ua_pending |= ua_type; 11386 } 11387 mtx_unlock(&lun->lun_lock); 11388 11389 return (0); 11390} 11391 11392static int 11393ctl_abort_task(union ctl_io *io) 11394{ 11395 union ctl_io *xio; 11396 struct ctl_lun *lun; 11397 struct ctl_softc *ctl_softc; 11398#if 0 11399 struct sbuf sb; 11400 char printbuf[128]; 11401#endif 11402 int found; 11403 uint32_t targ_lun; 11404 11405 ctl_softc = control_softc; 11406 found = 0; 11407 11408 /* 11409 * Look up the LUN. 11410 */ 11411 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11412 mtx_lock(&ctl_softc->ctl_lock); 11413 if ((targ_lun < CTL_MAX_LUNS) 11414 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11415 lun = ctl_softc->ctl_luns[targ_lun]; 11416 else { 11417 mtx_unlock(&ctl_softc->ctl_lock); 11418 goto bailout; 11419 } 11420 11421#if 0 11422 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11423 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11424#endif 11425 11426 mtx_lock(&lun->lun_lock); 11427 mtx_unlock(&ctl_softc->ctl_lock); 11428 /* 11429 * Run through the OOA queue and attempt to find the given I/O. 11430 * The target port, initiator ID, tag type and tag number have to 11431 * match the values that we got from the initiator. If we have an 11432 * untagged command to abort, simply abort the first untagged command 11433 * we come to. We only allow one untagged command at a time of course. 11434 */ 11435#if 0 11436 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11437#endif 11438 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11439 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11440#if 0 11441 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11442 11443 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11444 lun->lun, xio->scsiio.tag_num, 11445 xio->scsiio.tag_type, 11446 (xio->io_hdr.blocked_links.tqe_prev 11447 == NULL) ? "" : " BLOCKED", 11448 (xio->io_hdr.flags & 11449 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11450 (xio->io_hdr.flags & 11451 CTL_FLAG_ABORT) ? " ABORT" : "", 11452 (xio->io_hdr.flags & 11453 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11454 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11455 sbuf_finish(&sb); 11456 printf("%s\n", sbuf_data(&sb)); 11457#endif 11458 11459 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11460 && (xio->io_hdr.nexus.initid.id == 11461 io->io_hdr.nexus.initid.id)) { 11462 /* 11463 * If the abort says that the task is untagged, the 11464 * task in the queue must be untagged. Otherwise, 11465 * we just check to see whether the tag numbers 11466 * match. This is because the QLogic firmware 11467 * doesn't pass back the tag type in an abort 11468 * request. 11469 */ 11470#if 0 11471 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11472 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11473 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11474#endif 11475 /* 11476 * XXX KDM we've got problems with FC, because it 11477 * doesn't send down a tag type with aborts. So we 11478 * can only really go by the tag number... 11479 * This may cause problems with parallel SCSI. 11480 * Need to figure that out!! 11481 */ 11482 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11483 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11484 found = 1; 11485 if ((io->io_hdr.flags & 11486 CTL_FLAG_FROM_OTHER_SC) == 0 && 11487 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11488 union ctl_ha_msg msg_info; 11489 11490 io->io_hdr.flags |= 11491 CTL_FLAG_SENT_2OTHER_SC; 11492 msg_info.hdr.nexus = io->io_hdr.nexus; 11493 msg_info.task.task_action = 11494 CTL_TASK_ABORT_TASK; 11495 msg_info.task.tag_num = 11496 io->taskio.tag_num; 11497 msg_info.task.tag_type = 11498 io->taskio.tag_type; 11499 msg_info.hdr.msg_type = 11500 CTL_MSG_MANAGE_TASKS; 11501 msg_info.hdr.original_sc = NULL; 11502 msg_info.hdr.serializing_sc = NULL; 11503#if 0 11504 printf("Sent Abort to other side\n"); 11505#endif 11506 if (CTL_HA_STATUS_SUCCESS != 11507 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11508 (void *)&msg_info, 11509 sizeof(msg_info), 0)) { 11510 } 11511 } 11512#if 0 11513 printf("ctl_abort_task: found I/O to abort\n"); 11514#endif 11515 break; 11516 } 11517 } 11518 } 11519 mtx_unlock(&lun->lun_lock); 11520 11521bailout: 11522 11523 if (found == 0) { 11524 /* 11525 * This isn't really an error. It's entirely possible for 11526 * the abort and command completion to cross on the wire. 11527 * This is more of an informative/diagnostic error. 11528 */ 11529#if 0 11530 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11531 "%d:%d:%d:%d tag %d type %d\n", 11532 io->io_hdr.nexus.initid.id, 11533 io->io_hdr.nexus.targ_port, 11534 io->io_hdr.nexus.targ_target.id, 11535 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11536 io->taskio.tag_type); 11537#endif 11538 return (1); 11539 } else 11540 return (0); 11541} 11542 11543static void 11544ctl_run_task(union ctl_io *io) 11545{ 11546 struct ctl_softc *ctl_softc; 11547 int retval; 11548 const char *task_desc; 11549 11550 CTL_DEBUG_PRINT(("ctl_run_task\n")); 11551 11552 ctl_softc = control_softc; 11553 retval = 0; 11554 11555 KASSERT(io->io_hdr.io_type == CTL_IO_TASK, 11556 ("ctl_run_task: Unextected io_type %d\n", 11557 io->io_hdr.io_type)); 11558 11559 task_desc = ctl_scsi_task_string(&io->taskio); 11560 if (task_desc != NULL) { 11561#ifdef NEEDTOPORT 11562 csevent_log(CSC_CTL | CSC_SHELF_SW | 11563 CTL_TASK_REPORT, 11564 csevent_LogType_Trace, 11565 csevent_Severity_Information, 11566 csevent_AlertLevel_Green, 11567 csevent_FRU_Firmware, 11568 csevent_FRU_Unknown, 11569 "CTL: received task: %s",task_desc); 11570#endif 11571 } else { 11572#ifdef NEEDTOPORT 11573 csevent_log(CSC_CTL | CSC_SHELF_SW | 11574 CTL_TASK_REPORT, 11575 csevent_LogType_Trace, 11576 csevent_Severity_Information, 11577 csevent_AlertLevel_Green, 11578 csevent_FRU_Firmware, 11579 csevent_FRU_Unknown, 11580 "CTL: received unknown task " 11581 "type: %d (%#x)", 11582 io->taskio.task_action, 11583 io->taskio.task_action); 11584#endif 11585 } 11586 switch (io->taskio.task_action) { 11587 case CTL_TASK_ABORT_TASK: 11588 retval = ctl_abort_task(io); 11589 break; 11590 case CTL_TASK_ABORT_TASK_SET: 11591 break; 11592 case CTL_TASK_CLEAR_ACA: 11593 break; 11594 case CTL_TASK_CLEAR_TASK_SET: 11595 break; 11596 case CTL_TASK_LUN_RESET: { 11597 struct ctl_lun *lun; 11598 uint32_t targ_lun; 11599 int retval; 11600 11601 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11602 mtx_lock(&ctl_softc->ctl_lock); 11603 if ((targ_lun < CTL_MAX_LUNS) 11604 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11605 lun = ctl_softc->ctl_luns[targ_lun]; 11606 else { 11607 mtx_unlock(&ctl_softc->ctl_lock); 11608 retval = 1; 11609 break; 11610 } 11611 11612 if (!(io->io_hdr.flags & 11613 CTL_FLAG_FROM_OTHER_SC)) { 11614 union ctl_ha_msg msg_info; 11615 11616 io->io_hdr.flags |= 11617 CTL_FLAG_SENT_2OTHER_SC; 11618 msg_info.hdr.msg_type = 11619 CTL_MSG_MANAGE_TASKS; 11620 msg_info.hdr.nexus = io->io_hdr.nexus; 11621 msg_info.task.task_action = 11622 CTL_TASK_LUN_RESET; 11623 msg_info.hdr.original_sc = NULL; 11624 msg_info.hdr.serializing_sc = NULL; 11625 if (CTL_HA_STATUS_SUCCESS != 11626 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11627 (void *)&msg_info, 11628 sizeof(msg_info), 0)) { 11629 } 11630 } 11631 11632 retval = ctl_lun_reset(lun, io, 11633 CTL_UA_LUN_RESET); 11634 mtx_unlock(&ctl_softc->ctl_lock); 11635 break; 11636 } 11637 case CTL_TASK_TARGET_RESET: 11638 retval = ctl_target_reset(ctl_softc, io, CTL_UA_TARG_RESET); 11639 break; 11640 case CTL_TASK_BUS_RESET: 11641 retval = ctl_bus_reset(ctl_softc, io); 11642 break; 11643 case CTL_TASK_PORT_LOGIN: 11644 break; 11645 case CTL_TASK_PORT_LOGOUT: 11646 break; 11647 default: 11648 printf("ctl_run_task: got unknown task management event %d\n", 11649 io->taskio.task_action); 11650 break; 11651 } 11652 if (retval == 0) 11653 io->io_hdr.status = CTL_SUCCESS; 11654 else 11655 io->io_hdr.status = CTL_ERROR; 11656 11657 /* 11658 * This will queue this I/O to the done queue, but the 11659 * work thread won't be able to process it until we 11660 * return and the lock is released. 11661 */ 11662 ctl_done(io); 11663} 11664 11665/* 11666 * For HA operation. Handle commands that come in from the other 11667 * controller. 11668 */ 11669static void 11670ctl_handle_isc(union ctl_io *io) 11671{ 11672 int free_io; 11673 struct ctl_lun *lun; 11674 struct ctl_softc *ctl_softc; 11675 uint32_t targ_lun; 11676 11677 ctl_softc = control_softc; 11678 11679 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11680 lun = ctl_softc->ctl_luns[targ_lun]; 11681 11682 switch (io->io_hdr.msg_type) { 11683 case CTL_MSG_SERIALIZE: 11684 free_io = ctl_serialize_other_sc_cmd(&io->scsiio); 11685 break; 11686 case CTL_MSG_R2R: { 11687 uint8_t opcode; 11688 struct ctl_cmd_entry *entry; 11689 11690 /* 11691 * This is only used in SER_ONLY mode. 11692 */ 11693 free_io = 0; 11694 opcode = io->scsiio.cdb[0]; 11695 entry = &ctl_cmd_table[opcode]; 11696 mtx_lock(&lun->lun_lock); 11697 if (ctl_scsiio_lun_check(ctl_softc, lun, 11698 entry, (struct ctl_scsiio *)io) != 0) { 11699 mtx_unlock(&lun->lun_lock); 11700 ctl_done(io); 11701 break; 11702 } 11703 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11704 mtx_unlock(&lun->lun_lock); 11705 ctl_enqueue_rtr(io); 11706 break; 11707 } 11708 case CTL_MSG_FINISH_IO: 11709 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11710 free_io = 0; 11711 ctl_done(io); 11712 } else { 11713 free_io = 1; 11714 mtx_lock(&lun->lun_lock); 11715 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11716 ooa_links); 11717 ctl_check_blocked(lun); 11718 mtx_unlock(&lun->lun_lock); 11719 } 11720 break; 11721 case CTL_MSG_PERS_ACTION: 11722 ctl_hndl_per_res_out_on_other_sc( 11723 (union ctl_ha_msg *)&io->presio.pr_msg); 11724 free_io = 1; 11725 break; 11726 case CTL_MSG_BAD_JUJU: 11727 free_io = 0; 11728 ctl_done(io); 11729 break; 11730 case CTL_MSG_DATAMOVE: 11731 /* Only used in XFER mode */ 11732 free_io = 0; 11733 ctl_datamove_remote(io); 11734 break; 11735 case CTL_MSG_DATAMOVE_DONE: 11736 /* Only used in XFER mode */ 11737 free_io = 0; 11738 io->scsiio.be_move_done(io); 11739 break; 11740 default: 11741 free_io = 1; 11742 printf("%s: Invalid message type %d\n", 11743 __func__, io->io_hdr.msg_type); 11744 break; 11745 } 11746 if (free_io) 11747 ctl_free_io(io); 11748 11749} 11750 11751 11752/* 11753 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 11754 * there is no match. 11755 */ 11756static ctl_lun_error_pattern 11757ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 11758{ 11759 struct ctl_cmd_entry *entry; 11760 ctl_lun_error_pattern filtered_pattern, pattern; 11761 uint8_t opcode; 11762 11763 pattern = desc->error_pattern; 11764 11765 /* 11766 * XXX KDM we need more data passed into this function to match a 11767 * custom pattern, and we actually need to implement custom pattern 11768 * matching. 11769 */ 11770 if (pattern & CTL_LUN_PAT_CMD) 11771 return (CTL_LUN_PAT_CMD); 11772 11773 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 11774 return (CTL_LUN_PAT_ANY); 11775 11776 opcode = ctsio->cdb[0]; 11777 entry = &ctl_cmd_table[opcode]; 11778 11779 filtered_pattern = entry->pattern & pattern; 11780 11781 /* 11782 * If the user requested specific flags in the pattern (e.g. 11783 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 11784 * flags. 11785 * 11786 * If the user did not specify any flags, it doesn't matter whether 11787 * or not the command supports the flags. 11788 */ 11789 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 11790 (pattern & ~CTL_LUN_PAT_MASK)) 11791 return (CTL_LUN_PAT_NONE); 11792 11793 /* 11794 * If the user asked for a range check, see if the requested LBA 11795 * range overlaps with this command's LBA range. 11796 */ 11797 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 11798 uint64_t lba1; 11799 uint32_t len1; 11800 ctl_action action; 11801 int retval; 11802 11803 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 11804 if (retval != 0) 11805 return (CTL_LUN_PAT_NONE); 11806 11807 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 11808 desc->lba_range.len); 11809 /* 11810 * A "pass" means that the LBA ranges don't overlap, so 11811 * this doesn't match the user's range criteria. 11812 */ 11813 if (action == CTL_ACTION_PASS) 11814 return (CTL_LUN_PAT_NONE); 11815 } 11816 11817 return (filtered_pattern); 11818} 11819 11820static void 11821ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 11822{ 11823 struct ctl_error_desc *desc, *desc2; 11824 11825 mtx_assert(&lun->lun_lock, MA_OWNED); 11826 11827 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 11828 ctl_lun_error_pattern pattern; 11829 /* 11830 * Check to see whether this particular command matches 11831 * the pattern in the descriptor. 11832 */ 11833 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 11834 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 11835 continue; 11836 11837 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 11838 case CTL_LUN_INJ_ABORTED: 11839 ctl_set_aborted(&io->scsiio); 11840 break; 11841 case CTL_LUN_INJ_MEDIUM_ERR: 11842 ctl_set_medium_error(&io->scsiio); 11843 break; 11844 case CTL_LUN_INJ_UA: 11845 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 11846 * OCCURRED */ 11847 ctl_set_ua(&io->scsiio, 0x29, 0x00); 11848 break; 11849 case CTL_LUN_INJ_CUSTOM: 11850 /* 11851 * We're assuming the user knows what he is doing. 11852 * Just copy the sense information without doing 11853 * checks. 11854 */ 11855 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 11856 ctl_min(sizeof(desc->custom_sense), 11857 sizeof(io->scsiio.sense_data))); 11858 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 11859 io->scsiio.sense_len = SSD_FULL_SIZE; 11860 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 11861 break; 11862 case CTL_LUN_INJ_NONE: 11863 default: 11864 /* 11865 * If this is an error injection type we don't know 11866 * about, clear the continuous flag (if it is set) 11867 * so it will get deleted below. 11868 */ 11869 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 11870 break; 11871 } 11872 /* 11873 * By default, each error injection action is a one-shot 11874 */ 11875 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 11876 continue; 11877 11878 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 11879 11880 free(desc, M_CTL); 11881 } 11882} 11883 11884#ifdef CTL_IO_DELAY 11885static void 11886ctl_datamove_timer_wakeup(void *arg) 11887{ 11888 union ctl_io *io; 11889 11890 io = (union ctl_io *)arg; 11891 11892 ctl_datamove(io); 11893} 11894#endif /* CTL_IO_DELAY */ 11895 11896void 11897ctl_datamove(union ctl_io *io) 11898{ 11899 void (*fe_datamove)(union ctl_io *io); 11900 11901 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 11902 11903 CTL_DEBUG_PRINT(("ctl_datamove\n")); 11904 11905#ifdef CTL_TIME_IO 11906 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 11907 char str[256]; 11908 char path_str[64]; 11909 struct sbuf sb; 11910 11911 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 11912 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 11913 11914 sbuf_cat(&sb, path_str); 11915 switch (io->io_hdr.io_type) { 11916 case CTL_IO_SCSI: 11917 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 11918 sbuf_printf(&sb, "\n"); 11919 sbuf_cat(&sb, path_str); 11920 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 11921 io->scsiio.tag_num, io->scsiio.tag_type); 11922 break; 11923 case CTL_IO_TASK: 11924 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 11925 "Tag Type: %d\n", io->taskio.task_action, 11926 io->taskio.tag_num, io->taskio.tag_type); 11927 break; 11928 default: 11929 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11930 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 11931 break; 11932 } 11933 sbuf_cat(&sb, path_str); 11934 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 11935 (intmax_t)time_uptime - io->io_hdr.start_time); 11936 sbuf_finish(&sb); 11937 printf("%s", sbuf_data(&sb)); 11938 } 11939#endif /* CTL_TIME_IO */ 11940 11941#ifdef CTL_IO_DELAY 11942 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 11943 struct ctl_lun *lun; 11944 11945 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11946 11947 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 11948 } else { 11949 struct ctl_lun *lun; 11950 11951 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 11952 if ((lun != NULL) 11953 && (lun->delay_info.datamove_delay > 0)) { 11954 struct callout *callout; 11955 11956 callout = (struct callout *)&io->io_hdr.timer_bytes; 11957 callout_init(callout, /*mpsafe*/ 1); 11958 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 11959 callout_reset(callout, 11960 lun->delay_info.datamove_delay * hz, 11961 ctl_datamove_timer_wakeup, io); 11962 if (lun->delay_info.datamove_type == 11963 CTL_DELAY_TYPE_ONESHOT) 11964 lun->delay_info.datamove_delay = 0; 11965 return; 11966 } 11967 } 11968#endif 11969 11970 /* 11971 * This command has been aborted. Set the port status, so we fail 11972 * the data move. 11973 */ 11974 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 11975 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 11976 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 11977 io->io_hdr.nexus.targ_port, 11978 (uintmax_t)io->io_hdr.nexus.targ_target.id, 11979 io->io_hdr.nexus.targ_lun); 11980 io->io_hdr.status = CTL_CMD_ABORTED; 11981 io->io_hdr.port_status = 31337; 11982 /* 11983 * Note that the backend, in this case, will get the 11984 * callback in its context. In other cases it may get 11985 * called in the frontend's interrupt thread context. 11986 */ 11987 io->scsiio.be_move_done(io); 11988 return; 11989 } 11990 11991 /* 11992 * If we're in XFER mode and this I/O is from the other shelf 11993 * controller, we need to send the DMA to the other side to 11994 * actually transfer the data to/from the host. In serialize only 11995 * mode the transfer happens below CTL and ctl_datamove() is only 11996 * called on the machine that originally received the I/O. 11997 */ 11998 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 11999 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12000 union ctl_ha_msg msg; 12001 uint32_t sg_entries_sent; 12002 int do_sg_copy; 12003 int i; 12004 12005 memset(&msg, 0, sizeof(msg)); 12006 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 12007 msg.hdr.original_sc = io->io_hdr.original_sc; 12008 msg.hdr.serializing_sc = io; 12009 msg.hdr.nexus = io->io_hdr.nexus; 12010 msg.dt.flags = io->io_hdr.flags; 12011 /* 12012 * We convert everything into a S/G list here. We can't 12013 * pass by reference, only by value between controllers. 12014 * So we can't pass a pointer to the S/G list, only as many 12015 * S/G entries as we can fit in here. If it's possible for 12016 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 12017 * then we need to break this up into multiple transfers. 12018 */ 12019 if (io->scsiio.kern_sg_entries == 0) { 12020 msg.dt.kern_sg_entries = 1; 12021 /* 12022 * If this is in cached memory, flush the cache 12023 * before we send the DMA request to the other 12024 * controller. We want to do this in either the 12025 * read or the write case. The read case is 12026 * straightforward. In the write case, we want to 12027 * make sure nothing is in the local cache that 12028 * could overwrite the DMAed data. 12029 */ 12030 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12031 /* 12032 * XXX KDM use bus_dmamap_sync() here. 12033 */ 12034 } 12035 12036 /* 12037 * Convert to a physical address if this is a 12038 * virtual address. 12039 */ 12040 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 12041 msg.dt.sg_list[0].addr = 12042 io->scsiio.kern_data_ptr; 12043 } else { 12044 /* 12045 * XXX KDM use busdma here! 12046 */ 12047#if 0 12048 msg.dt.sg_list[0].addr = (void *) 12049 vtophys(io->scsiio.kern_data_ptr); 12050#endif 12051 } 12052 12053 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 12054 do_sg_copy = 0; 12055 } else { 12056 struct ctl_sg_entry *sgl; 12057 12058 do_sg_copy = 1; 12059 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 12060 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 12061 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12062 /* 12063 * XXX KDM use bus_dmamap_sync() here. 12064 */ 12065 } 12066 } 12067 12068 msg.dt.kern_data_len = io->scsiio.kern_data_len; 12069 msg.dt.kern_total_len = io->scsiio.kern_total_len; 12070 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 12071 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 12072 msg.dt.sg_sequence = 0; 12073 12074 /* 12075 * Loop until we've sent all of the S/G entries. On the 12076 * other end, we'll recompose these S/G entries into one 12077 * contiguous list before passing it to the 12078 */ 12079 for (sg_entries_sent = 0; sg_entries_sent < 12080 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 12081 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 12082 sizeof(msg.dt.sg_list[0])), 12083 msg.dt.kern_sg_entries - sg_entries_sent); 12084 12085 if (do_sg_copy != 0) { 12086 struct ctl_sg_entry *sgl; 12087 int j; 12088 12089 sgl = (struct ctl_sg_entry *) 12090 io->scsiio.kern_data_ptr; 12091 /* 12092 * If this is in cached memory, flush the cache 12093 * before we send the DMA request to the other 12094 * controller. We want to do this in either 12095 * the * read or the write case. The read 12096 * case is straightforward. In the write 12097 * case, we want to make sure nothing is 12098 * in the local cache that could overwrite 12099 * the DMAed data. 12100 */ 12101 12102 for (i = sg_entries_sent, j = 0; 12103 i < msg.dt.cur_sg_entries; i++, j++) { 12104 if ((io->io_hdr.flags & 12105 CTL_FLAG_NO_DATASYNC) == 0) { 12106 /* 12107 * XXX KDM use bus_dmamap_sync() 12108 */ 12109 } 12110 if ((io->io_hdr.flags & 12111 CTL_FLAG_BUS_ADDR) == 0) { 12112 /* 12113 * XXX KDM use busdma. 12114 */ 12115#if 0 12116 msg.dt.sg_list[j].addr =(void *) 12117 vtophys(sgl[i].addr); 12118#endif 12119 } else { 12120 msg.dt.sg_list[j].addr = 12121 sgl[i].addr; 12122 } 12123 msg.dt.sg_list[j].len = sgl[i].len; 12124 } 12125 } 12126 12127 sg_entries_sent += msg.dt.cur_sg_entries; 12128 if (sg_entries_sent >= msg.dt.kern_sg_entries) 12129 msg.dt.sg_last = 1; 12130 else 12131 msg.dt.sg_last = 0; 12132 12133 /* 12134 * XXX KDM drop and reacquire the lock here? 12135 */ 12136 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12137 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12138 /* 12139 * XXX do something here. 12140 */ 12141 } 12142 12143 msg.dt.sent_sg_entries = sg_entries_sent; 12144 } 12145 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12146 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 12147 ctl_failover_io(io, /*have_lock*/ 0); 12148 12149 } else { 12150 12151 /* 12152 * Lookup the fe_datamove() function for this particular 12153 * front end. 12154 */ 12155 fe_datamove = 12156 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12157 12158 fe_datamove(io); 12159 } 12160} 12161 12162static void 12163ctl_send_datamove_done(union ctl_io *io, int have_lock) 12164{ 12165 union ctl_ha_msg msg; 12166 int isc_status; 12167 12168 memset(&msg, 0, sizeof(msg)); 12169 12170 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 12171 msg.hdr.original_sc = io; 12172 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 12173 msg.hdr.nexus = io->io_hdr.nexus; 12174 msg.hdr.status = io->io_hdr.status; 12175 msg.scsi.tag_num = io->scsiio.tag_num; 12176 msg.scsi.tag_type = io->scsiio.tag_type; 12177 msg.scsi.scsi_status = io->scsiio.scsi_status; 12178 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12179 sizeof(io->scsiio.sense_data)); 12180 msg.scsi.sense_len = io->scsiio.sense_len; 12181 msg.scsi.sense_residual = io->scsiio.sense_residual; 12182 msg.scsi.fetd_status = io->io_hdr.port_status; 12183 msg.scsi.residual = io->scsiio.residual; 12184 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12185 12186 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12187 ctl_failover_io(io, /*have_lock*/ have_lock); 12188 return; 12189 } 12190 12191 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 12192 if (isc_status > CTL_HA_STATUS_SUCCESS) { 12193 /* XXX do something if this fails */ 12194 } 12195 12196} 12197 12198/* 12199 * The DMA to the remote side is done, now we need to tell the other side 12200 * we're done so it can continue with its data movement. 12201 */ 12202static void 12203ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12204{ 12205 union ctl_io *io; 12206 12207 io = rq->context; 12208 12209 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12210 printf("%s: ISC DMA write failed with error %d", __func__, 12211 rq->ret); 12212 ctl_set_internal_failure(&io->scsiio, 12213 /*sks_valid*/ 1, 12214 /*retry_count*/ rq->ret); 12215 } 12216 12217 ctl_dt_req_free(rq); 12218 12219 /* 12220 * In this case, we had to malloc the memory locally. Free it. 12221 */ 12222 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12223 int i; 12224 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12225 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12226 } 12227 /* 12228 * The data is in local and remote memory, so now we need to send 12229 * status (good or back) back to the other side. 12230 */ 12231 ctl_send_datamove_done(io, /*have_lock*/ 0); 12232} 12233 12234/* 12235 * We've moved the data from the host/controller into local memory. Now we 12236 * need to push it over to the remote controller's memory. 12237 */ 12238static int 12239ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12240{ 12241 int retval; 12242 12243 retval = 0; 12244 12245 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12246 ctl_datamove_remote_write_cb); 12247 12248 return (retval); 12249} 12250 12251static void 12252ctl_datamove_remote_write(union ctl_io *io) 12253{ 12254 int retval; 12255 void (*fe_datamove)(union ctl_io *io); 12256 12257 /* 12258 * - Get the data from the host/HBA into local memory. 12259 * - DMA memory from the local controller to the remote controller. 12260 * - Send status back to the remote controller. 12261 */ 12262 12263 retval = ctl_datamove_remote_sgl_setup(io); 12264 if (retval != 0) 12265 return; 12266 12267 /* Switch the pointer over so the FETD knows what to do */ 12268 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12269 12270 /* 12271 * Use a custom move done callback, since we need to send completion 12272 * back to the other controller, not to the backend on this side. 12273 */ 12274 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12275 12276 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12277 12278 fe_datamove(io); 12279 12280 return; 12281 12282} 12283 12284static int 12285ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12286{ 12287#if 0 12288 char str[256]; 12289 char path_str[64]; 12290 struct sbuf sb; 12291#endif 12292 12293 /* 12294 * In this case, we had to malloc the memory locally. Free it. 12295 */ 12296 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12297 int i; 12298 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12299 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12300 } 12301 12302#if 0 12303 scsi_path_string(io, path_str, sizeof(path_str)); 12304 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12305 sbuf_cat(&sb, path_str); 12306 scsi_command_string(&io->scsiio, NULL, &sb); 12307 sbuf_printf(&sb, "\n"); 12308 sbuf_cat(&sb, path_str); 12309 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12310 io->scsiio.tag_num, io->scsiio.tag_type); 12311 sbuf_cat(&sb, path_str); 12312 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12313 io->io_hdr.flags, io->io_hdr.status); 12314 sbuf_finish(&sb); 12315 printk("%s", sbuf_data(&sb)); 12316#endif 12317 12318 12319 /* 12320 * The read is done, now we need to send status (good or bad) back 12321 * to the other side. 12322 */ 12323 ctl_send_datamove_done(io, /*have_lock*/ 0); 12324 12325 return (0); 12326} 12327 12328static void 12329ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12330{ 12331 union ctl_io *io; 12332 void (*fe_datamove)(union ctl_io *io); 12333 12334 io = rq->context; 12335 12336 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12337 printf("%s: ISC DMA read failed with error %d", __func__, 12338 rq->ret); 12339 ctl_set_internal_failure(&io->scsiio, 12340 /*sks_valid*/ 1, 12341 /*retry_count*/ rq->ret); 12342 } 12343 12344 ctl_dt_req_free(rq); 12345 12346 /* Switch the pointer over so the FETD knows what to do */ 12347 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12348 12349 /* 12350 * Use a custom move done callback, since we need to send completion 12351 * back to the other controller, not to the backend on this side. 12352 */ 12353 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12354 12355 /* XXX KDM add checks like the ones in ctl_datamove? */ 12356 12357 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12358 12359 fe_datamove(io); 12360} 12361 12362static int 12363ctl_datamove_remote_sgl_setup(union ctl_io *io) 12364{ 12365 struct ctl_sg_entry *local_sglist, *remote_sglist; 12366 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12367 struct ctl_softc *softc; 12368 int retval; 12369 int i; 12370 12371 retval = 0; 12372 softc = control_softc; 12373 12374 local_sglist = io->io_hdr.local_sglist; 12375 local_dma_sglist = io->io_hdr.local_dma_sglist; 12376 remote_sglist = io->io_hdr.remote_sglist; 12377 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12378 12379 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12380 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12381 local_sglist[i].len = remote_sglist[i].len; 12382 12383 /* 12384 * XXX Detect the situation where the RS-level I/O 12385 * redirector on the other side has already read the 12386 * data off of the AOR RS on this side, and 12387 * transferred it to remote (mirror) memory on the 12388 * other side. Since we already have the data in 12389 * memory here, we just need to use it. 12390 * 12391 * XXX KDM this can probably be removed once we 12392 * get the cache device code in and take the 12393 * current AOR implementation out. 12394 */ 12395#ifdef NEEDTOPORT 12396 if ((remote_sglist[i].addr >= 12397 (void *)vtophys(softc->mirr->addr)) 12398 && (remote_sglist[i].addr < 12399 ((void *)vtophys(softc->mirr->addr) + 12400 CacheMirrorOffset))) { 12401 local_sglist[i].addr = remote_sglist[i].addr - 12402 CacheMirrorOffset; 12403 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12404 CTL_FLAG_DATA_IN) 12405 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12406 } else { 12407 local_sglist[i].addr = remote_sglist[i].addr + 12408 CacheMirrorOffset; 12409 } 12410#endif 12411#if 0 12412 printf("%s: local %p, remote %p, len %d\n", 12413 __func__, local_sglist[i].addr, 12414 remote_sglist[i].addr, local_sglist[i].len); 12415#endif 12416 } 12417 } else { 12418 uint32_t len_to_go; 12419 12420 /* 12421 * In this case, we don't have automatically allocated 12422 * memory for this I/O on this controller. This typically 12423 * happens with internal CTL I/O -- e.g. inquiry, mode 12424 * sense, etc. Anything coming from RAIDCore will have 12425 * a mirror area available. 12426 */ 12427 len_to_go = io->scsiio.kern_data_len; 12428 12429 /* 12430 * Clear the no datasync flag, we have to use malloced 12431 * buffers. 12432 */ 12433 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12434 12435 /* 12436 * The difficult thing here is that the size of the various 12437 * S/G segments may be different than the size from the 12438 * remote controller. That'll make it harder when DMAing 12439 * the data back to the other side. 12440 */ 12441 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12442 sizeof(io->io_hdr.remote_sglist[0])) && 12443 (len_to_go > 0); i++) { 12444 local_sglist[i].len = ctl_min(len_to_go, 131072); 12445 CTL_SIZE_8B(local_dma_sglist[i].len, 12446 local_sglist[i].len); 12447 local_sglist[i].addr = 12448 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12449 12450 local_dma_sglist[i].addr = local_sglist[i].addr; 12451 12452 if (local_sglist[i].addr == NULL) { 12453 int j; 12454 12455 printf("malloc failed for %zd bytes!", 12456 local_dma_sglist[i].len); 12457 for (j = 0; j < i; j++) { 12458 free(local_sglist[j].addr, M_CTL); 12459 } 12460 ctl_set_internal_failure(&io->scsiio, 12461 /*sks_valid*/ 1, 12462 /*retry_count*/ 4857); 12463 retval = 1; 12464 goto bailout_error; 12465 12466 } 12467 /* XXX KDM do we need a sync here? */ 12468 12469 len_to_go -= local_sglist[i].len; 12470 } 12471 /* 12472 * Reset the number of S/G entries accordingly. The 12473 * original number of S/G entries is available in 12474 * rem_sg_entries. 12475 */ 12476 io->scsiio.kern_sg_entries = i; 12477 12478#if 0 12479 printf("%s: kern_sg_entries = %d\n", __func__, 12480 io->scsiio.kern_sg_entries); 12481 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12482 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12483 local_sglist[i].addr, local_sglist[i].len, 12484 local_dma_sglist[i].len); 12485#endif 12486 } 12487 12488 12489 return (retval); 12490 12491bailout_error: 12492 12493 ctl_send_datamove_done(io, /*have_lock*/ 0); 12494 12495 return (retval); 12496} 12497 12498static int 12499ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12500 ctl_ha_dt_cb callback) 12501{ 12502 struct ctl_ha_dt_req *rq; 12503 struct ctl_sg_entry *remote_sglist, *local_sglist; 12504 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12505 uint32_t local_used, remote_used, total_used; 12506 int retval; 12507 int i, j; 12508 12509 retval = 0; 12510 12511 rq = ctl_dt_req_alloc(); 12512 12513 /* 12514 * If we failed to allocate the request, and if the DMA didn't fail 12515 * anyway, set busy status. This is just a resource allocation 12516 * failure. 12517 */ 12518 if ((rq == NULL) 12519 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12520 ctl_set_busy(&io->scsiio); 12521 12522 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12523 12524 if (rq != NULL) 12525 ctl_dt_req_free(rq); 12526 12527 /* 12528 * The data move failed. We need to return status back 12529 * to the other controller. No point in trying to DMA 12530 * data to the remote controller. 12531 */ 12532 12533 ctl_send_datamove_done(io, /*have_lock*/ 0); 12534 12535 retval = 1; 12536 12537 goto bailout; 12538 } 12539 12540 local_sglist = io->io_hdr.local_sglist; 12541 local_dma_sglist = io->io_hdr.local_dma_sglist; 12542 remote_sglist = io->io_hdr.remote_sglist; 12543 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12544 local_used = 0; 12545 remote_used = 0; 12546 total_used = 0; 12547 12548 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12549 rq->ret = CTL_HA_STATUS_SUCCESS; 12550 rq->context = io; 12551 callback(rq); 12552 goto bailout; 12553 } 12554 12555 /* 12556 * Pull/push the data over the wire from/to the other controller. 12557 * This takes into account the possibility that the local and 12558 * remote sglists may not be identical in terms of the size of 12559 * the elements and the number of elements. 12560 * 12561 * One fundamental assumption here is that the length allocated for 12562 * both the local and remote sglists is identical. Otherwise, we've 12563 * essentially got a coding error of some sort. 12564 */ 12565 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12566 int isc_ret; 12567 uint32_t cur_len, dma_length; 12568 uint8_t *tmp_ptr; 12569 12570 rq->id = CTL_HA_DATA_CTL; 12571 rq->command = command; 12572 rq->context = io; 12573 12574 /* 12575 * Both pointers should be aligned. But it is possible 12576 * that the allocation length is not. They should both 12577 * also have enough slack left over at the end, though, 12578 * to round up to the next 8 byte boundary. 12579 */ 12580 cur_len = ctl_min(local_sglist[i].len - local_used, 12581 remote_sglist[j].len - remote_used); 12582 12583 /* 12584 * In this case, we have a size issue and need to decrease 12585 * the size, except in the case where we actually have less 12586 * than 8 bytes left. In that case, we need to increase 12587 * the DMA length to get the last bit. 12588 */ 12589 if ((cur_len & 0x7) != 0) { 12590 if (cur_len > 0x7) { 12591 cur_len = cur_len - (cur_len & 0x7); 12592 dma_length = cur_len; 12593 } else { 12594 CTL_SIZE_8B(dma_length, cur_len); 12595 } 12596 12597 } else 12598 dma_length = cur_len; 12599 12600 /* 12601 * If we had to allocate memory for this I/O, instead of using 12602 * the non-cached mirror memory, we'll need to flush the cache 12603 * before trying to DMA to the other controller. 12604 * 12605 * We could end up doing this multiple times for the same 12606 * segment if we have a larger local segment than remote 12607 * segment. That shouldn't be an issue. 12608 */ 12609 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12610 /* 12611 * XXX KDM use bus_dmamap_sync() here. 12612 */ 12613 } 12614 12615 rq->size = dma_length; 12616 12617 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12618 tmp_ptr += local_used; 12619 12620 /* Use physical addresses when talking to ISC hardware */ 12621 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12622 /* XXX KDM use busdma */ 12623#if 0 12624 rq->local = vtophys(tmp_ptr); 12625#endif 12626 } else 12627 rq->local = tmp_ptr; 12628 12629 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12630 tmp_ptr += remote_used; 12631 rq->remote = tmp_ptr; 12632 12633 rq->callback = NULL; 12634 12635 local_used += cur_len; 12636 if (local_used >= local_sglist[i].len) { 12637 i++; 12638 local_used = 0; 12639 } 12640 12641 remote_used += cur_len; 12642 if (remote_used >= remote_sglist[j].len) { 12643 j++; 12644 remote_used = 0; 12645 } 12646 total_used += cur_len; 12647 12648 if (total_used >= io->scsiio.kern_data_len) 12649 rq->callback = callback; 12650 12651 if ((rq->size & 0x7) != 0) { 12652 printf("%s: warning: size %d is not on 8b boundary\n", 12653 __func__, rq->size); 12654 } 12655 if (((uintptr_t)rq->local & 0x7) != 0) { 12656 printf("%s: warning: local %p not on 8b boundary\n", 12657 __func__, rq->local); 12658 } 12659 if (((uintptr_t)rq->remote & 0x7) != 0) { 12660 printf("%s: warning: remote %p not on 8b boundary\n", 12661 __func__, rq->local); 12662 } 12663#if 0 12664 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12665 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12666 rq->local, rq->remote, rq->size); 12667#endif 12668 12669 isc_ret = ctl_dt_single(rq); 12670 if (isc_ret == CTL_HA_STATUS_WAIT) 12671 continue; 12672 12673 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12674 rq->ret = CTL_HA_STATUS_SUCCESS; 12675 } else { 12676 rq->ret = isc_ret; 12677 } 12678 callback(rq); 12679 goto bailout; 12680 } 12681 12682bailout: 12683 return (retval); 12684 12685} 12686 12687static void 12688ctl_datamove_remote_read(union ctl_io *io) 12689{ 12690 int retval; 12691 int i; 12692 12693 /* 12694 * This will send an error to the other controller in the case of a 12695 * failure. 12696 */ 12697 retval = ctl_datamove_remote_sgl_setup(io); 12698 if (retval != 0) 12699 return; 12700 12701 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12702 ctl_datamove_remote_read_cb); 12703 if ((retval != 0) 12704 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12705 /* 12706 * Make sure we free memory if there was an error.. The 12707 * ctl_datamove_remote_xfer() function will send the 12708 * datamove done message, or call the callback with an 12709 * error if there is a problem. 12710 */ 12711 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12712 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12713 } 12714 12715 return; 12716} 12717 12718/* 12719 * Process a datamove request from the other controller. This is used for 12720 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 12721 * first. Once that is complete, the data gets DMAed into the remote 12722 * controller's memory. For reads, we DMA from the remote controller's 12723 * memory into our memory first, and then move it out to the FETD. 12724 */ 12725static void 12726ctl_datamove_remote(union ctl_io *io) 12727{ 12728 struct ctl_softc *softc; 12729 12730 softc = control_softc; 12731 12732 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 12733 12734 /* 12735 * Note that we look for an aborted I/O here, but don't do some of 12736 * the other checks that ctl_datamove() normally does. We don't 12737 * need to run the task queue, because this I/O is on the ISC 12738 * queue, which is executed by the work thread after the task queue. 12739 * We don't need to run the datamove delay code, since that should 12740 * have been done if need be on the other controller. 12741 */ 12742 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12743 12744 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 12745 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 12746 io->io_hdr.nexus.targ_port, 12747 io->io_hdr.nexus.targ_target.id, 12748 io->io_hdr.nexus.targ_lun); 12749 io->io_hdr.status = CTL_CMD_ABORTED; 12750 io->io_hdr.port_status = 31338; 12751 12752 ctl_send_datamove_done(io, /*have_lock*/ 0); 12753 12754 return; 12755 } 12756 12757 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 12758 ctl_datamove_remote_write(io); 12759 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 12760 ctl_datamove_remote_read(io); 12761 } else { 12762 union ctl_ha_msg msg; 12763 struct scsi_sense_data *sense; 12764 uint8_t sks[3]; 12765 int retry_count; 12766 12767 memset(&msg, 0, sizeof(msg)); 12768 12769 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 12770 msg.hdr.status = CTL_SCSI_ERROR; 12771 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 12772 12773 retry_count = 4243; 12774 12775 sense = &msg.scsi.sense_data; 12776 sks[0] = SSD_SCS_VALID; 12777 sks[1] = (retry_count >> 8) & 0xff; 12778 sks[2] = retry_count & 0xff; 12779 12780 /* "Internal target failure" */ 12781 scsi_set_sense_data(sense, 12782 /*sense_format*/ SSD_TYPE_NONE, 12783 /*current_error*/ 1, 12784 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 12785 /*asc*/ 0x44, 12786 /*ascq*/ 0x00, 12787 /*type*/ SSD_ELEM_SKS, 12788 /*size*/ sizeof(sks), 12789 /*data*/ sks, 12790 SSD_ELEM_NONE); 12791 12792 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12793 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12794 ctl_failover_io(io, /*have_lock*/ 1); 12795 return; 12796 } 12797 12798 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 12799 CTL_HA_STATUS_SUCCESS) { 12800 /* XXX KDM what to do if this fails? */ 12801 } 12802 return; 12803 } 12804 12805} 12806 12807static int 12808ctl_process_done(union ctl_io *io) 12809{ 12810 struct ctl_lun *lun; 12811 struct ctl_softc *ctl_softc; 12812 void (*fe_done)(union ctl_io *io); 12813 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 12814 12815 CTL_DEBUG_PRINT(("ctl_process_done\n")); 12816 12817 fe_done = 12818 control_softc->ctl_ports[targ_port]->fe_done; 12819 12820#ifdef CTL_TIME_IO 12821 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12822 char str[256]; 12823 char path_str[64]; 12824 struct sbuf sb; 12825 12826 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12827 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12828 12829 sbuf_cat(&sb, path_str); 12830 switch (io->io_hdr.io_type) { 12831 case CTL_IO_SCSI: 12832 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12833 sbuf_printf(&sb, "\n"); 12834 sbuf_cat(&sb, path_str); 12835 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12836 io->scsiio.tag_num, io->scsiio.tag_type); 12837 break; 12838 case CTL_IO_TASK: 12839 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12840 "Tag Type: %d\n", io->taskio.task_action, 12841 io->taskio.tag_num, io->taskio.tag_type); 12842 break; 12843 default: 12844 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12845 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12846 break; 12847 } 12848 sbuf_cat(&sb, path_str); 12849 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 12850 (intmax_t)time_uptime - io->io_hdr.start_time); 12851 sbuf_finish(&sb); 12852 printf("%s", sbuf_data(&sb)); 12853 } 12854#endif /* CTL_TIME_IO */ 12855 12856 switch (io->io_hdr.io_type) { 12857 case CTL_IO_SCSI: 12858 break; 12859 case CTL_IO_TASK: 12860 if (bootverbose || verbose > 0) 12861 ctl_io_error_print(io, NULL); 12862 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 12863 ctl_free_io(io); 12864 else 12865 fe_done(io); 12866 return (CTL_RETVAL_COMPLETE); 12867 break; 12868 default: 12869 printf("ctl_process_done: invalid io type %d\n", 12870 io->io_hdr.io_type); 12871 panic("ctl_process_done: invalid io type %d\n", 12872 io->io_hdr.io_type); 12873 break; /* NOTREACHED */ 12874 } 12875 12876 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12877 if (lun == NULL) { 12878 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 12879 io->io_hdr.nexus.targ_mapped_lun)); 12880 fe_done(io); 12881 goto bailout; 12882 } 12883 ctl_softc = lun->ctl_softc; 12884 12885 mtx_lock(&lun->lun_lock); 12886 12887 /* 12888 * Check to see if we have any errors to inject here. We only 12889 * inject errors for commands that don't already have errors set. 12890 */ 12891 if ((STAILQ_FIRST(&lun->error_list) != NULL) 12892 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 12893 ctl_inject_error(lun, io); 12894 12895 /* 12896 * XXX KDM how do we treat commands that aren't completed 12897 * successfully? 12898 * 12899 * XXX KDM should we also track I/O latency? 12900 */ 12901 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS && 12902 io->io_hdr.io_type == CTL_IO_SCSI) { 12903#ifdef CTL_TIME_IO 12904 struct bintime cur_bt; 12905#endif 12906 int type; 12907 12908 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12909 CTL_FLAG_DATA_IN) 12910 type = CTL_STATS_READ; 12911 else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12912 CTL_FLAG_DATA_OUT) 12913 type = CTL_STATS_WRITE; 12914 else 12915 type = CTL_STATS_NO_IO; 12916 12917 lun->stats.ports[targ_port].bytes[type] += 12918 io->scsiio.kern_total_len; 12919 lun->stats.ports[targ_port].operations[type]++; 12920#ifdef CTL_TIME_IO 12921 bintime_add(&lun->stats.ports[targ_port].dma_time[type], 12922 &io->io_hdr.dma_bt); 12923 lun->stats.ports[targ_port].num_dmas[type] += 12924 io->io_hdr.num_dmas; 12925 getbintime(&cur_bt); 12926 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 12927 bintime_add(&lun->stats.ports[targ_port].time[type], &cur_bt); 12928#endif 12929 } 12930 12931 /* 12932 * Remove this from the OOA queue. 12933 */ 12934 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 12935 12936 /* 12937 * Run through the blocked queue on this LUN and see if anything 12938 * has become unblocked, now that this transaction is done. 12939 */ 12940 ctl_check_blocked(lun); 12941 12942 /* 12943 * If the LUN has been invalidated, free it if there is nothing 12944 * left on its OOA queue. 12945 */ 12946 if ((lun->flags & CTL_LUN_INVALID) 12947 && TAILQ_EMPTY(&lun->ooa_queue)) { 12948 mtx_unlock(&lun->lun_lock); 12949 mtx_lock(&ctl_softc->ctl_lock); 12950 ctl_free_lun(lun); 12951 mtx_unlock(&ctl_softc->ctl_lock); 12952 } else 12953 mtx_unlock(&lun->lun_lock); 12954 12955 /* 12956 * If this command has been aborted, make sure we set the status 12957 * properly. The FETD is responsible for freeing the I/O and doing 12958 * whatever it needs to do to clean up its state. 12959 */ 12960 if (io->io_hdr.flags & CTL_FLAG_ABORT) 12961 io->io_hdr.status = CTL_CMD_ABORTED; 12962 12963 /* 12964 * We print out status for every task management command. For SCSI 12965 * commands, we filter out any unit attention errors; they happen 12966 * on every boot, and would clutter up the log. Note: task 12967 * management commands aren't printed here, they are printed above, 12968 * since they should never even make it down here. 12969 */ 12970 switch (io->io_hdr.io_type) { 12971 case CTL_IO_SCSI: { 12972 int error_code, sense_key, asc, ascq; 12973 12974 sense_key = 0; 12975 12976 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 12977 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 12978 /* 12979 * Since this is just for printing, no need to 12980 * show errors here. 12981 */ 12982 scsi_extract_sense_len(&io->scsiio.sense_data, 12983 io->scsiio.sense_len, 12984 &error_code, 12985 &sense_key, 12986 &asc, 12987 &ascq, 12988 /*show_errors*/ 0); 12989 } 12990 12991 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 12992 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 12993 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 12994 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 12995 12996 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 12997 ctl_softc->skipped_prints++; 12998 } else { 12999 uint32_t skipped_prints; 13000 13001 skipped_prints = ctl_softc->skipped_prints; 13002 13003 ctl_softc->skipped_prints = 0; 13004 ctl_softc->last_print_jiffies = time_uptime; 13005 13006 if (skipped_prints > 0) { 13007#ifdef NEEDTOPORT 13008 csevent_log(CSC_CTL | CSC_SHELF_SW | 13009 CTL_ERROR_REPORT, 13010 csevent_LogType_Trace, 13011 csevent_Severity_Information, 13012 csevent_AlertLevel_Green, 13013 csevent_FRU_Firmware, 13014 csevent_FRU_Unknown, 13015 "High CTL error volume, %d prints " 13016 "skipped", skipped_prints); 13017#endif 13018 } 13019 if (bootverbose || verbose > 0) 13020 ctl_io_error_print(io, NULL); 13021 } 13022 } 13023 break; 13024 } 13025 case CTL_IO_TASK: 13026 if (bootverbose || verbose > 0) 13027 ctl_io_error_print(io, NULL); 13028 break; 13029 default: 13030 break; 13031 } 13032 13033 /* 13034 * Tell the FETD or the other shelf controller we're done with this 13035 * command. Note that only SCSI commands get to this point. Task 13036 * management commands are completed above. 13037 * 13038 * We only send status to the other controller if we're in XFER 13039 * mode. In SER_ONLY mode, the I/O is done on the controller that 13040 * received the I/O (from CTL's perspective), and so the status is 13041 * generated there. 13042 * 13043 * XXX KDM if we hold the lock here, we could cause a deadlock 13044 * if the frontend comes back in in this context to queue 13045 * something. 13046 */ 13047 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 13048 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 13049 union ctl_ha_msg msg; 13050 13051 memset(&msg, 0, sizeof(msg)); 13052 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 13053 msg.hdr.original_sc = io->io_hdr.original_sc; 13054 msg.hdr.nexus = io->io_hdr.nexus; 13055 msg.hdr.status = io->io_hdr.status; 13056 msg.scsi.scsi_status = io->scsiio.scsi_status; 13057 msg.scsi.tag_num = io->scsiio.tag_num; 13058 msg.scsi.tag_type = io->scsiio.tag_type; 13059 msg.scsi.sense_len = io->scsiio.sense_len; 13060 msg.scsi.sense_residual = io->scsiio.sense_residual; 13061 msg.scsi.residual = io->scsiio.residual; 13062 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 13063 sizeof(io->scsiio.sense_data)); 13064 /* 13065 * We copy this whether or not this is an I/O-related 13066 * command. Otherwise, we'd have to go and check to see 13067 * whether it's a read/write command, and it really isn't 13068 * worth it. 13069 */ 13070 memcpy(&msg.scsi.lbalen, 13071 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 13072 sizeof(msg.scsi.lbalen)); 13073 13074 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 13075 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 13076 /* XXX do something here */ 13077 } 13078 13079 ctl_free_io(io); 13080 } else 13081 fe_done(io); 13082 13083bailout: 13084 13085 return (CTL_RETVAL_COMPLETE); 13086} 13087 13088/* 13089 * Front end should call this if it doesn't do autosense. When the request 13090 * sense comes back in from the initiator, we'll dequeue this and send it. 13091 */ 13092int 13093ctl_queue_sense(union ctl_io *io) 13094{ 13095 struct ctl_lun *lun; 13096 struct ctl_softc *ctl_softc; 13097 uint32_t initidx, targ_lun; 13098 13099 ctl_softc = control_softc; 13100 13101 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13102 13103 /* 13104 * LUN lookup will likely move to the ctl_work_thread() once we 13105 * have our new queueing infrastructure (that doesn't put things on 13106 * a per-LUN queue initially). That is so that we can handle 13107 * things like an INQUIRY to a LUN that we don't have enabled. We 13108 * can't deal with that right now. 13109 */ 13110 mtx_lock(&ctl_softc->ctl_lock); 13111 13112 /* 13113 * If we don't have a LUN for this, just toss the sense 13114 * information. 13115 */ 13116 targ_lun = io->io_hdr.nexus.targ_lun; 13117 if (io->io_hdr.nexus.lun_map_fn != NULL) 13118 targ_lun = io->io_hdr.nexus.lun_map_fn(io->io_hdr.nexus.lun_map_arg, targ_lun); 13119 if ((targ_lun < CTL_MAX_LUNS) 13120 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13121 lun = ctl_softc->ctl_luns[targ_lun]; 13122 else 13123 goto bailout; 13124 13125 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13126 13127 mtx_lock(&lun->lun_lock); 13128 /* 13129 * Already have CA set for this LUN...toss the sense information. 13130 */ 13131 if (ctl_is_set(lun->have_ca, initidx)) { 13132 mtx_unlock(&lun->lun_lock); 13133 goto bailout; 13134 } 13135 13136 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13137 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13138 sizeof(io->scsiio.sense_data))); 13139 ctl_set_mask(lun->have_ca, initidx); 13140 mtx_unlock(&lun->lun_lock); 13141 13142bailout: 13143 mtx_unlock(&ctl_softc->ctl_lock); 13144 13145 ctl_free_io(io); 13146 13147 return (CTL_RETVAL_COMPLETE); 13148} 13149 13150/* 13151 * Primary command inlet from frontend ports. All SCSI and task I/O 13152 * requests must go through this function. 13153 */ 13154int 13155ctl_queue(union ctl_io *io) 13156{ 13157 struct ctl_softc *ctl_softc; 13158 13159 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13160 13161 ctl_softc = control_softc; 13162 13163#ifdef CTL_TIME_IO 13164 io->io_hdr.start_time = time_uptime; 13165 getbintime(&io->io_hdr.start_bt); 13166#endif /* CTL_TIME_IO */ 13167 13168 /* Map FE-specific LUN ID into global one. */ 13169 if (io->io_hdr.nexus.lun_map_fn != NULL) 13170 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.lun_map_fn( 13171 io->io_hdr.nexus.lun_map_arg, io->io_hdr.nexus.targ_lun); 13172 else 13173 io->io_hdr.nexus.targ_mapped_lun = io->io_hdr.nexus.targ_lun; 13174 13175 switch (io->io_hdr.io_type) { 13176 case CTL_IO_SCSI: 13177 case CTL_IO_TASK: 13178 ctl_enqueue_incoming(io); 13179 break; 13180 default: 13181 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13182 return (EINVAL); 13183 } 13184 13185 return (CTL_RETVAL_COMPLETE); 13186} 13187 13188#ifdef CTL_IO_DELAY 13189static void 13190ctl_done_timer_wakeup(void *arg) 13191{ 13192 union ctl_io *io; 13193 13194 io = (union ctl_io *)arg; 13195 ctl_done(io); 13196} 13197#endif /* CTL_IO_DELAY */ 13198 13199void 13200ctl_done(union ctl_io *io) 13201{ 13202 struct ctl_softc *ctl_softc; 13203 13204 ctl_softc = control_softc; 13205 13206 /* 13207 * Enable this to catch duplicate completion issues. 13208 */ 13209#if 0 13210 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13211 printf("%s: type %d msg %d cdb %x iptl: " 13212 "%d:%d:%d:%d tag 0x%04x " 13213 "flag %#x status %x\n", 13214 __func__, 13215 io->io_hdr.io_type, 13216 io->io_hdr.msg_type, 13217 io->scsiio.cdb[0], 13218 io->io_hdr.nexus.initid.id, 13219 io->io_hdr.nexus.targ_port, 13220 io->io_hdr.nexus.targ_target.id, 13221 io->io_hdr.nexus.targ_lun, 13222 (io->io_hdr.io_type == 13223 CTL_IO_TASK) ? 13224 io->taskio.tag_num : 13225 io->scsiio.tag_num, 13226 io->io_hdr.flags, 13227 io->io_hdr.status); 13228 } else 13229 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13230#endif 13231 13232 /* 13233 * This is an internal copy of an I/O, and should not go through 13234 * the normal done processing logic. 13235 */ 13236 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) 13237 return; 13238 13239 /* 13240 * We need to send a msg to the serializing shelf to finish the IO 13241 * as well. We don't send a finish message to the other shelf if 13242 * this is a task management command. Task management commands 13243 * aren't serialized in the OOA queue, but rather just executed on 13244 * both shelf controllers for commands that originated on that 13245 * controller. 13246 */ 13247 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13248 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13249 union ctl_ha_msg msg_io; 13250 13251 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13252 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13253 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13254 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13255 } 13256 /* continue on to finish IO */ 13257 } 13258#ifdef CTL_IO_DELAY 13259 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13260 struct ctl_lun *lun; 13261 13262 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13263 13264 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13265 } else { 13266 struct ctl_lun *lun; 13267 13268 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13269 13270 if ((lun != NULL) 13271 && (lun->delay_info.done_delay > 0)) { 13272 struct callout *callout; 13273 13274 callout = (struct callout *)&io->io_hdr.timer_bytes; 13275 callout_init(callout, /*mpsafe*/ 1); 13276 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13277 callout_reset(callout, 13278 lun->delay_info.done_delay * hz, 13279 ctl_done_timer_wakeup, io); 13280 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13281 lun->delay_info.done_delay = 0; 13282 return; 13283 } 13284 } 13285#endif /* CTL_IO_DELAY */ 13286 13287 ctl_enqueue_done(io); 13288} 13289 13290int 13291ctl_isc(struct ctl_scsiio *ctsio) 13292{ 13293 struct ctl_lun *lun; 13294 int retval; 13295 13296 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13297 13298 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13299 13300 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13301 13302 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13303 13304 return (retval); 13305} 13306 13307 13308static void 13309ctl_work_thread(void *arg) 13310{ 13311 struct ctl_thread *thr = (struct ctl_thread *)arg; 13312 struct ctl_softc *softc = thr->ctl_softc; 13313 union ctl_io *io; 13314 int retval; 13315 13316 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13317 13318 for (;;) { 13319 retval = 0; 13320 13321 /* 13322 * We handle the queues in this order: 13323 * - ISC 13324 * - done queue (to free up resources, unblock other commands) 13325 * - RtR queue 13326 * - incoming queue 13327 * 13328 * If those queues are empty, we break out of the loop and 13329 * go to sleep. 13330 */ 13331 mtx_lock(&thr->queue_lock); 13332 io = (union ctl_io *)STAILQ_FIRST(&thr->isc_queue); 13333 if (io != NULL) { 13334 STAILQ_REMOVE_HEAD(&thr->isc_queue, links); 13335 mtx_unlock(&thr->queue_lock); 13336 ctl_handle_isc(io); 13337 continue; 13338 } 13339 io = (union ctl_io *)STAILQ_FIRST(&thr->done_queue); 13340 if (io != NULL) { 13341 STAILQ_REMOVE_HEAD(&thr->done_queue, links); 13342 /* clear any blocked commands, call fe_done */ 13343 mtx_unlock(&thr->queue_lock); 13344 retval = ctl_process_done(io); 13345 continue; 13346 } 13347 io = (union ctl_io *)STAILQ_FIRST(&thr->incoming_queue); 13348 if (io != NULL) { 13349 STAILQ_REMOVE_HEAD(&thr->incoming_queue, links); 13350 mtx_unlock(&thr->queue_lock); 13351 if (io->io_hdr.io_type == CTL_IO_TASK) 13352 ctl_run_task(io); 13353 else 13354 ctl_scsiio_precheck(softc, &io->scsiio); 13355 continue; 13356 } 13357 if (!ctl_pause_rtr) { 13358 io = (union ctl_io *)STAILQ_FIRST(&thr->rtr_queue); 13359 if (io != NULL) { 13360 STAILQ_REMOVE_HEAD(&thr->rtr_queue, links); 13361 mtx_unlock(&thr->queue_lock); 13362 retval = ctl_scsiio(&io->scsiio); 13363 if (retval != CTL_RETVAL_COMPLETE) 13364 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13365 continue; 13366 } 13367 } 13368 13369 /* Sleep until we have something to do. */ 13370 mtx_sleep(thr, &thr->queue_lock, PDROP | PRIBIO, "-", 0); 13371 } 13372} 13373 13374static void 13375ctl_lun_thread(void *arg) 13376{ 13377 struct ctl_softc *softc = (struct ctl_softc *)arg; 13378 struct ctl_be_lun *be_lun; 13379 int retval; 13380 13381 CTL_DEBUG_PRINT(("ctl_lun_thread starting\n")); 13382 13383 for (;;) { 13384 retval = 0; 13385 mtx_lock(&softc->ctl_lock); 13386 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13387 if (be_lun != NULL) { 13388 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13389 mtx_unlock(&softc->ctl_lock); 13390 ctl_create_lun(be_lun); 13391 continue; 13392 } 13393 13394 /* Sleep until we have something to do. */ 13395 mtx_sleep(&softc->pending_lun_queue, &softc->ctl_lock, 13396 PDROP | PRIBIO, "-", 0); 13397 } 13398} 13399 13400static void 13401ctl_enqueue_incoming(union ctl_io *io) 13402{ 13403 struct ctl_softc *softc = control_softc; 13404 struct ctl_thread *thr; 13405 u_int idx; 13406 13407 idx = (io->io_hdr.nexus.targ_port * 127 + 13408 io->io_hdr.nexus.initid.id) % worker_threads; 13409 thr = &softc->threads[idx]; 13410 mtx_lock(&thr->queue_lock); 13411 STAILQ_INSERT_TAIL(&thr->incoming_queue, &io->io_hdr, links); 13412 mtx_unlock(&thr->queue_lock); 13413 wakeup(thr); 13414} 13415 13416static void 13417ctl_enqueue_rtr(union ctl_io *io) 13418{ 13419 struct ctl_softc *softc = control_softc; 13420 struct ctl_thread *thr; 13421 13422 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13423 mtx_lock(&thr->queue_lock); 13424 STAILQ_INSERT_TAIL(&thr->rtr_queue, &io->io_hdr, links); 13425 mtx_unlock(&thr->queue_lock); 13426 wakeup(thr); 13427} 13428 13429static void 13430ctl_enqueue_done(union ctl_io *io) 13431{ 13432 struct ctl_softc *softc = control_softc; 13433 struct ctl_thread *thr; 13434 13435 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13436 mtx_lock(&thr->queue_lock); 13437 STAILQ_INSERT_TAIL(&thr->done_queue, &io->io_hdr, links); 13438 mtx_unlock(&thr->queue_lock); 13439 wakeup(thr); 13440} 13441 13442static void 13443ctl_enqueue_isc(union ctl_io *io) 13444{ 13445 struct ctl_softc *softc = control_softc; 13446 struct ctl_thread *thr; 13447 13448 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13449 mtx_lock(&thr->queue_lock); 13450 STAILQ_INSERT_TAIL(&thr->isc_queue, &io->io_hdr, links); 13451 mtx_unlock(&thr->queue_lock); 13452 wakeup(thr); 13453} 13454 13455/* Initialization and failover */ 13456 13457void 13458ctl_init_isc_msg(void) 13459{ 13460 printf("CTL: Still calling this thing\n"); 13461} 13462 13463/* 13464 * Init component 13465 * Initializes component into configuration defined by bootMode 13466 * (see hasc-sv.c) 13467 * returns hasc_Status: 13468 * OK 13469 * ERROR - fatal error 13470 */ 13471static ctl_ha_comp_status 13472ctl_isc_init(struct ctl_ha_component *c) 13473{ 13474 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13475 13476 c->status = ret; 13477 return ret; 13478} 13479 13480/* Start component 13481 * Starts component in state requested. If component starts successfully, 13482 * it must set its own state to the requestrd state 13483 * When requested state is HASC_STATE_HA, the component may refine it 13484 * by adding _SLAVE or _MASTER flags. 13485 * Currently allowed state transitions are: 13486 * UNKNOWN->HA - initial startup 13487 * UNKNOWN->SINGLE - initial startup when no parter detected 13488 * HA->SINGLE - failover 13489 * returns ctl_ha_comp_status: 13490 * OK - component successfully started in requested state 13491 * FAILED - could not start the requested state, failover may 13492 * be possible 13493 * ERROR - fatal error detected, no future startup possible 13494 */ 13495static ctl_ha_comp_status 13496ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13497{ 13498 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13499 13500 printf("%s: go\n", __func__); 13501 13502 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13503 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13504 ctl_is_single = 0; 13505 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13506 != CTL_HA_STATUS_SUCCESS) { 13507 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13508 ret = CTL_HA_COMP_STATUS_ERROR; 13509 } 13510 } else if (CTL_HA_STATE_IS_HA(c->state) 13511 && CTL_HA_STATE_IS_SINGLE(state)){ 13512 // HA->SINGLE transition 13513 ctl_failover(); 13514 ctl_is_single = 1; 13515 } else { 13516 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13517 c->state, state); 13518 ret = CTL_HA_COMP_STATUS_ERROR; 13519 } 13520 if (CTL_HA_STATE_IS_SINGLE(state)) 13521 ctl_is_single = 1; 13522 13523 c->state = state; 13524 c->status = ret; 13525 return ret; 13526} 13527 13528/* 13529 * Quiesce component 13530 * The component must clear any error conditions (set status to OK) and 13531 * prepare itself to another Start call 13532 * returns ctl_ha_comp_status: 13533 * OK 13534 * ERROR 13535 */ 13536static ctl_ha_comp_status 13537ctl_isc_quiesce(struct ctl_ha_component *c) 13538{ 13539 int ret = CTL_HA_COMP_STATUS_OK; 13540 13541 ctl_pause_rtr = 1; 13542 c->status = ret; 13543 return ret; 13544} 13545 13546struct ctl_ha_component ctl_ha_component_ctlisc = 13547{ 13548 .name = "CTL ISC", 13549 .state = CTL_HA_STATE_UNKNOWN, 13550 .init = ctl_isc_init, 13551 .start = ctl_isc_start, 13552 .quiesce = ctl_isc_quiesce 13553}; 13554 13555/* 13556 * vim: ts=8 13557 */ 13558