ctl.c revision 268689
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 268689 2014-07-15 17:11:42Z 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 * Supported pages (0x00), Serial number (0x80), Device ID (0x83), 321 * SCSI Ports (0x88), Block limits (0xB0) and 322 * Logical Block Provisioning (0xB2) 323 */ 324#define SCSI_EVPD_NUM_SUPPORTED_PAGES 6 325 326static void ctl_isc_event_handler(ctl_ha_channel chanel, ctl_ha_event event, 327 int param); 328static void ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest); 329static int ctl_init(void); 330void ctl_shutdown(void); 331static int ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td); 332static int ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td); 333static void ctl_ioctl_online(void *arg); 334static void ctl_ioctl_offline(void *arg); 335static int ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id); 336static int ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id); 337static int ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio); 338static int ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio); 339static int ctl_ioctl_submit_wait(union ctl_io *io); 340static void ctl_ioctl_datamove(union ctl_io *io); 341static void ctl_ioctl_done(union ctl_io *io); 342static void ctl_ioctl_hard_startstop_callback(void *arg, 343 struct cfi_metatask *metatask); 344static void ctl_ioctl_bbrread_callback(void *arg,struct cfi_metatask *metatask); 345static int ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 346 struct ctl_ooa *ooa_hdr, 347 struct ctl_ooa_entry *kern_entries); 348static int ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 349 struct thread *td); 350uint32_t ctl_get_resindex(struct ctl_nexus *nexus); 351uint32_t ctl_port_idx(int port_num); 352static uint32_t ctl_map_lun(int port_num, uint32_t lun); 353static uint32_t ctl_map_lun_back(int port_num, uint32_t lun); 354#ifdef unused 355static union ctl_io *ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, 356 uint32_t targ_target, uint32_t targ_lun, 357 int can_wait); 358static void ctl_kfree_io(union ctl_io *io); 359#endif /* unused */ 360static int ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 361 struct ctl_be_lun *be_lun, struct ctl_id target_id); 362static int ctl_free_lun(struct ctl_lun *lun); 363static void ctl_create_lun(struct ctl_be_lun *be_lun); 364/** 365static void ctl_failover_change_pages(struct ctl_softc *softc, 366 struct ctl_scsiio *ctsio, int master); 367**/ 368 369static int ctl_do_mode_select(union ctl_io *io); 370static int ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, 371 uint64_t res_key, uint64_t sa_res_key, 372 uint8_t type, uint32_t residx, 373 struct ctl_scsiio *ctsio, 374 struct scsi_per_res_out *cdb, 375 struct scsi_per_res_out_parms* param); 376static void ctl_pro_preempt_other(struct ctl_lun *lun, 377 union ctl_ha_msg *msg); 378static void ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg); 379static int ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len); 380static int ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len); 381static int ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len); 382static int ctl_inquiry_evpd_scsi_ports(struct ctl_scsiio *ctsio, 383 int alloc_len); 384static int ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, 385 int alloc_len); 386static int ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len); 387static int ctl_inquiry_evpd(struct ctl_scsiio *ctsio); 388static int ctl_inquiry_std(struct ctl_scsiio *ctsio); 389static int ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len); 390static ctl_action ctl_extent_check(union ctl_io *io1, union ctl_io *io2); 391static ctl_action ctl_check_for_blockage(union ctl_io *pending_io, 392 union ctl_io *ooa_io); 393static ctl_action ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 394 union ctl_io *starting_io); 395static int ctl_check_blocked(struct ctl_lun *lun); 396static int ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, 397 struct ctl_lun *lun, 398 const struct ctl_cmd_entry *entry, 399 struct ctl_scsiio *ctsio); 400//static int ctl_check_rtr(union ctl_io *pending_io, struct ctl_softc *softc); 401static void ctl_failover(void); 402static int ctl_scsiio_precheck(struct ctl_softc *ctl_softc, 403 struct ctl_scsiio *ctsio); 404static int ctl_scsiio(struct ctl_scsiio *ctsio); 405 406static int ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io); 407static int ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 408 ctl_ua_type ua_type); 409static int ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, 410 ctl_ua_type ua_type); 411static int ctl_abort_task(union ctl_io *io); 412static void ctl_run_task(union ctl_io *io); 413#ifdef CTL_IO_DELAY 414static void ctl_datamove_timer_wakeup(void *arg); 415static void ctl_done_timer_wakeup(void *arg); 416#endif /* CTL_IO_DELAY */ 417 418static void ctl_send_datamove_done(union ctl_io *io, int have_lock); 419static void ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq); 420static int ctl_datamove_remote_dm_write_cb(union ctl_io *io); 421static void ctl_datamove_remote_write(union ctl_io *io); 422static int ctl_datamove_remote_dm_read_cb(union ctl_io *io); 423static void ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq); 424static int ctl_datamove_remote_sgl_setup(union ctl_io *io); 425static int ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 426 ctl_ha_dt_cb callback); 427static void ctl_datamove_remote_read(union ctl_io *io); 428static void ctl_datamove_remote(union ctl_io *io); 429static int ctl_process_done(union ctl_io *io); 430static void ctl_lun_thread(void *arg); 431static void ctl_work_thread(void *arg); 432static void ctl_enqueue_incoming(union ctl_io *io); 433static void ctl_enqueue_rtr(union ctl_io *io); 434static void ctl_enqueue_done(union ctl_io *io); 435static void ctl_enqueue_isc(union ctl_io *io); 436static const struct ctl_cmd_entry * 437 ctl_get_cmd_entry(struct ctl_scsiio *ctsio); 438static const struct ctl_cmd_entry * 439 ctl_validate_command(struct ctl_scsiio *ctsio); 440static int ctl_cmd_applicable(uint8_t lun_type, 441 const struct ctl_cmd_entry *entry); 442 443/* 444 * Load the serialization table. This isn't very pretty, but is probably 445 * the easiest way to do it. 446 */ 447#include "ctl_ser_table.c" 448 449/* 450 * We only need to define open, close and ioctl routines for this driver. 451 */ 452static struct cdevsw ctl_cdevsw = { 453 .d_version = D_VERSION, 454 .d_flags = 0, 455 .d_open = ctl_open, 456 .d_close = ctl_close, 457 .d_ioctl = ctl_ioctl, 458 .d_name = "ctl", 459}; 460 461 462MALLOC_DEFINE(M_CTL, "ctlmem", "Memory used for CTL"); 463MALLOC_DEFINE(M_CTLIO, "ctlio", "Memory used for CTL requests"); 464 465static int ctl_module_event_handler(module_t, int /*modeventtype_t*/, void *); 466 467static moduledata_t ctl_moduledata = { 468 "ctl", 469 ctl_module_event_handler, 470 NULL 471}; 472 473DECLARE_MODULE(ctl, ctl_moduledata, SI_SUB_CONFIGURE, SI_ORDER_THIRD); 474MODULE_VERSION(ctl, 1); 475 476static struct ctl_frontend ioctl_frontend = 477{ 478 .name = "ioctl", 479}; 480 481static void 482ctl_isc_handler_finish_xfer(struct ctl_softc *ctl_softc, 483 union ctl_ha_msg *msg_info) 484{ 485 struct ctl_scsiio *ctsio; 486 487 if (msg_info->hdr.original_sc == NULL) { 488 printf("%s: original_sc == NULL!\n", __func__); 489 /* XXX KDM now what? */ 490 return; 491 } 492 493 ctsio = &msg_info->hdr.original_sc->scsiio; 494 ctsio->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 495 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 496 ctsio->io_hdr.status = msg_info->hdr.status; 497 ctsio->scsi_status = msg_info->scsi.scsi_status; 498 ctsio->sense_len = msg_info->scsi.sense_len; 499 ctsio->sense_residual = msg_info->scsi.sense_residual; 500 ctsio->residual = msg_info->scsi.residual; 501 memcpy(&ctsio->sense_data, &msg_info->scsi.sense_data, 502 sizeof(ctsio->sense_data)); 503 memcpy(&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 504 &msg_info->scsi.lbalen, sizeof(msg_info->scsi.lbalen)); 505 ctl_enqueue_isc((union ctl_io *)ctsio); 506} 507 508static void 509ctl_isc_handler_finish_ser_only(struct ctl_softc *ctl_softc, 510 union ctl_ha_msg *msg_info) 511{ 512 struct ctl_scsiio *ctsio; 513 514 if (msg_info->hdr.serializing_sc == NULL) { 515 printf("%s: serializing_sc == NULL!\n", __func__); 516 /* XXX KDM now what? */ 517 return; 518 } 519 520 ctsio = &msg_info->hdr.serializing_sc->scsiio; 521#if 0 522 /* 523 * Attempt to catch the situation where an I/O has 524 * been freed, and we're using it again. 525 */ 526 if (ctsio->io_hdr.io_type == 0xff) { 527 union ctl_io *tmp_io; 528 tmp_io = (union ctl_io *)ctsio; 529 printf("%s: %p use after free!\n", __func__, 530 ctsio); 531 printf("%s: type %d msg %d cdb %x iptl: " 532 "%d:%d:%d:%d tag 0x%04x " 533 "flag %#x status %x\n", 534 __func__, 535 tmp_io->io_hdr.io_type, 536 tmp_io->io_hdr.msg_type, 537 tmp_io->scsiio.cdb[0], 538 tmp_io->io_hdr.nexus.initid.id, 539 tmp_io->io_hdr.nexus.targ_port, 540 tmp_io->io_hdr.nexus.targ_target.id, 541 tmp_io->io_hdr.nexus.targ_lun, 542 (tmp_io->io_hdr.io_type == 543 CTL_IO_TASK) ? 544 tmp_io->taskio.tag_num : 545 tmp_io->scsiio.tag_num, 546 tmp_io->io_hdr.flags, 547 tmp_io->io_hdr.status); 548 } 549#endif 550 ctsio->io_hdr.msg_type = CTL_MSG_FINISH_IO; 551 ctl_enqueue_isc((union ctl_io *)ctsio); 552} 553 554/* 555 * ISC (Inter Shelf Communication) event handler. Events from the HA 556 * subsystem come in here. 557 */ 558static void 559ctl_isc_event_handler(ctl_ha_channel channel, ctl_ha_event event, int param) 560{ 561 struct ctl_softc *ctl_softc; 562 union ctl_io *io; 563 struct ctl_prio *presio; 564 ctl_ha_status isc_status; 565 566 ctl_softc = control_softc; 567 io = NULL; 568 569 570#if 0 571 printf("CTL: Isc Msg event %d\n", event); 572#endif 573 if (event == CTL_HA_EVT_MSG_RECV) { 574 union ctl_ha_msg msg_info; 575 576 isc_status = ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 577 sizeof(msg_info), /*wait*/ 0); 578#if 0 579 printf("CTL: msg_type %d\n", msg_info.msg_type); 580#endif 581 if (isc_status != 0) { 582 printf("Error receiving message, status = %d\n", 583 isc_status); 584 return; 585 } 586 587 switch (msg_info.hdr.msg_type) { 588 case CTL_MSG_SERIALIZE: 589#if 0 590 printf("Serialize\n"); 591#endif 592 io = ctl_alloc_io((void *)ctl_softc->othersc_pool); 593 if (io == NULL) { 594 printf("ctl_isc_event_handler: can't allocate " 595 "ctl_io!\n"); 596 /* Bad Juju */ 597 /* Need to set busy and send msg back */ 598 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 599 msg_info.hdr.status = CTL_SCSI_ERROR; 600 msg_info.scsi.scsi_status = SCSI_STATUS_BUSY; 601 msg_info.scsi.sense_len = 0; 602 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 603 sizeof(msg_info), 0) > CTL_HA_STATUS_SUCCESS){ 604 } 605 goto bailout; 606 } 607 ctl_zero_io(io); 608 // populate ctsio from msg_info 609 io->io_hdr.io_type = CTL_IO_SCSI; 610 io->io_hdr.msg_type = CTL_MSG_SERIALIZE; 611 io->io_hdr.original_sc = msg_info.hdr.original_sc; 612#if 0 613 printf("pOrig %x\n", (int)msg_info.original_sc); 614#endif 615 io->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC | 616 CTL_FLAG_IO_ACTIVE; 617 /* 618 * If we're in serialization-only mode, we don't 619 * want to go through full done processing. Thus 620 * the COPY flag. 621 * 622 * XXX KDM add another flag that is more specific. 623 */ 624 if (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY) 625 io->io_hdr.flags |= CTL_FLAG_INT_COPY; 626 io->io_hdr.nexus = msg_info.hdr.nexus; 627#if 0 628 printf("targ %d, port %d, iid %d, lun %d\n", 629 io->io_hdr.nexus.targ_target.id, 630 io->io_hdr.nexus.targ_port, 631 io->io_hdr.nexus.initid.id, 632 io->io_hdr.nexus.targ_lun); 633#endif 634 io->scsiio.tag_num = msg_info.scsi.tag_num; 635 io->scsiio.tag_type = msg_info.scsi.tag_type; 636 memcpy(io->scsiio.cdb, msg_info.scsi.cdb, 637 CTL_MAX_CDBLEN); 638 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 639 const struct ctl_cmd_entry *entry; 640 641 entry = ctl_get_cmd_entry(&io->scsiio); 642 io->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 643 io->io_hdr.flags |= 644 entry->flags & CTL_FLAG_DATA_MASK; 645 } 646 ctl_enqueue_isc(io); 647 break; 648 649 /* Performed on the Originating SC, XFER mode only */ 650 case CTL_MSG_DATAMOVE: { 651 struct ctl_sg_entry *sgl; 652 int i, j; 653 654 io = msg_info.hdr.original_sc; 655 if (io == NULL) { 656 printf("%s: original_sc == NULL!\n", __func__); 657 /* XXX KDM do something here */ 658 break; 659 } 660 io->io_hdr.msg_type = CTL_MSG_DATAMOVE; 661 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 662 /* 663 * Keep track of this, we need to send it back over 664 * when the datamove is complete. 665 */ 666 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 667 668 if (msg_info.dt.sg_sequence == 0) { 669 /* 670 * XXX KDM we use the preallocated S/G list 671 * here, but we'll need to change this to 672 * dynamic allocation if we need larger S/G 673 * lists. 674 */ 675 if (msg_info.dt.kern_sg_entries > 676 sizeof(io->io_hdr.remote_sglist) / 677 sizeof(io->io_hdr.remote_sglist[0])) { 678 printf("%s: number of S/G entries " 679 "needed %u > allocated num %zd\n", 680 __func__, 681 msg_info.dt.kern_sg_entries, 682 sizeof(io->io_hdr.remote_sglist)/ 683 sizeof(io->io_hdr.remote_sglist[0])); 684 685 /* 686 * XXX KDM send a message back to 687 * the other side to shut down the 688 * DMA. The error will come back 689 * through via the normal channel. 690 */ 691 break; 692 } 693 sgl = io->io_hdr.remote_sglist; 694 memset(sgl, 0, 695 sizeof(io->io_hdr.remote_sglist)); 696 697 io->scsiio.kern_data_ptr = (uint8_t *)sgl; 698 699 io->scsiio.kern_sg_entries = 700 msg_info.dt.kern_sg_entries; 701 io->scsiio.rem_sg_entries = 702 msg_info.dt.kern_sg_entries; 703 io->scsiio.kern_data_len = 704 msg_info.dt.kern_data_len; 705 io->scsiio.kern_total_len = 706 msg_info.dt.kern_total_len; 707 io->scsiio.kern_data_resid = 708 msg_info.dt.kern_data_resid; 709 io->scsiio.kern_rel_offset = 710 msg_info.dt.kern_rel_offset; 711 /* 712 * Clear out per-DMA flags. 713 */ 714 io->io_hdr.flags &= ~CTL_FLAG_RDMA_MASK; 715 /* 716 * Add per-DMA flags that are set for this 717 * particular DMA request. 718 */ 719 io->io_hdr.flags |= msg_info.dt.flags & 720 CTL_FLAG_RDMA_MASK; 721 } else 722 sgl = (struct ctl_sg_entry *) 723 io->scsiio.kern_data_ptr; 724 725 for (i = msg_info.dt.sent_sg_entries, j = 0; 726 i < (msg_info.dt.sent_sg_entries + 727 msg_info.dt.cur_sg_entries); i++, j++) { 728 sgl[i].addr = msg_info.dt.sg_list[j].addr; 729 sgl[i].len = msg_info.dt.sg_list[j].len; 730 731#if 0 732 printf("%s: L: %p,%d -> %p,%d j=%d, i=%d\n", 733 __func__, 734 msg_info.dt.sg_list[j].addr, 735 msg_info.dt.sg_list[j].len, 736 sgl[i].addr, sgl[i].len, j, i); 737#endif 738 } 739#if 0 740 memcpy(&sgl[msg_info.dt.sent_sg_entries], 741 msg_info.dt.sg_list, 742 sizeof(*sgl) * msg_info.dt.cur_sg_entries); 743#endif 744 745 /* 746 * If this is the last piece of the I/O, we've got 747 * the full S/G list. Queue processing in the thread. 748 * Otherwise wait for the next piece. 749 */ 750 if (msg_info.dt.sg_last != 0) 751 ctl_enqueue_isc(io); 752 break; 753 } 754 /* Performed on the Serializing (primary) SC, XFER mode only */ 755 case CTL_MSG_DATAMOVE_DONE: { 756 if (msg_info.hdr.serializing_sc == NULL) { 757 printf("%s: serializing_sc == NULL!\n", 758 __func__); 759 /* XXX KDM now what? */ 760 break; 761 } 762 /* 763 * We grab the sense information here in case 764 * there was a failure, so we can return status 765 * back to the initiator. 766 */ 767 io = msg_info.hdr.serializing_sc; 768 io->io_hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 769 io->io_hdr.status = msg_info.hdr.status; 770 io->scsiio.scsi_status = msg_info.scsi.scsi_status; 771 io->scsiio.sense_len = msg_info.scsi.sense_len; 772 io->scsiio.sense_residual =msg_info.scsi.sense_residual; 773 io->io_hdr.port_status = msg_info.scsi.fetd_status; 774 io->scsiio.residual = msg_info.scsi.residual; 775 memcpy(&io->scsiio.sense_data,&msg_info.scsi.sense_data, 776 sizeof(io->scsiio.sense_data)); 777 ctl_enqueue_isc(io); 778 break; 779 } 780 781 /* Preformed on Originating SC, SER_ONLY mode */ 782 case CTL_MSG_R2R: 783 io = msg_info.hdr.original_sc; 784 if (io == NULL) { 785 printf("%s: Major Bummer\n", __func__); 786 return; 787 } else { 788#if 0 789 printf("pOrig %x\n",(int) ctsio); 790#endif 791 } 792 io->io_hdr.msg_type = CTL_MSG_R2R; 793 io->io_hdr.serializing_sc = msg_info.hdr.serializing_sc; 794 ctl_enqueue_isc(io); 795 break; 796 797 /* 798 * Performed on Serializing(i.e. primary SC) SC in SER_ONLY 799 * mode. 800 * Performed on the Originating (i.e. secondary) SC in XFER 801 * mode 802 */ 803 case CTL_MSG_FINISH_IO: 804 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) 805 ctl_isc_handler_finish_xfer(ctl_softc, 806 &msg_info); 807 else 808 ctl_isc_handler_finish_ser_only(ctl_softc, 809 &msg_info); 810 break; 811 812 /* Preformed on Originating SC */ 813 case CTL_MSG_BAD_JUJU: 814 io = msg_info.hdr.original_sc; 815 if (io == NULL) { 816 printf("%s: Bad JUJU!, original_sc is NULL!\n", 817 __func__); 818 break; 819 } 820 ctl_copy_sense_data(&msg_info, io); 821 /* 822 * IO should have already been cleaned up on other 823 * SC so clear this flag so we won't send a message 824 * back to finish the IO there. 825 */ 826 io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 827 io->io_hdr.flags |= CTL_FLAG_IO_ACTIVE; 828 829 /* io = msg_info.hdr.serializing_sc; */ 830 io->io_hdr.msg_type = CTL_MSG_BAD_JUJU; 831 ctl_enqueue_isc(io); 832 break; 833 834 /* Handle resets sent from the other side */ 835 case CTL_MSG_MANAGE_TASKS: { 836 struct ctl_taskio *taskio; 837 taskio = (struct ctl_taskio *)ctl_alloc_io( 838 (void *)ctl_softc->othersc_pool); 839 if (taskio == NULL) { 840 printf("ctl_isc_event_handler: can't allocate " 841 "ctl_io!\n"); 842 /* Bad Juju */ 843 /* should I just call the proper reset func 844 here??? */ 845 goto bailout; 846 } 847 ctl_zero_io((union ctl_io *)taskio); 848 taskio->io_hdr.io_type = CTL_IO_TASK; 849 taskio->io_hdr.flags |= CTL_FLAG_FROM_OTHER_SC; 850 taskio->io_hdr.nexus = msg_info.hdr.nexus; 851 taskio->task_action = msg_info.task.task_action; 852 taskio->tag_num = msg_info.task.tag_num; 853 taskio->tag_type = msg_info.task.tag_type; 854#ifdef CTL_TIME_IO 855 taskio->io_hdr.start_time = time_uptime; 856 getbintime(&taskio->io_hdr.start_bt); 857#if 0 858 cs_prof_gettime(&taskio->io_hdr.start_ticks); 859#endif 860#endif /* CTL_TIME_IO */ 861 ctl_run_task((union ctl_io *)taskio); 862 break; 863 } 864 /* Persistent Reserve action which needs attention */ 865 case CTL_MSG_PERS_ACTION: 866 presio = (struct ctl_prio *)ctl_alloc_io( 867 (void *)ctl_softc->othersc_pool); 868 if (presio == NULL) { 869 printf("ctl_isc_event_handler: can't allocate " 870 "ctl_io!\n"); 871 /* Bad Juju */ 872 /* Need to set busy and send msg back */ 873 goto bailout; 874 } 875 ctl_zero_io((union ctl_io *)presio); 876 presio->io_hdr.msg_type = CTL_MSG_PERS_ACTION; 877 presio->pr_msg = msg_info.pr; 878 ctl_enqueue_isc((union ctl_io *)presio); 879 break; 880 case CTL_MSG_SYNC_FE: 881 rcv_sync_msg = 1; 882 break; 883 case CTL_MSG_APS_LOCK: { 884 // It's quicker to execute this then to 885 // queue it. 886 struct ctl_lun *lun; 887 struct ctl_page_index *page_index; 888 struct copan_aps_subpage *current_sp; 889 uint32_t targ_lun; 890 891 targ_lun = msg_info.hdr.nexus.targ_mapped_lun; 892 lun = ctl_softc->ctl_luns[targ_lun]; 893 mtx_lock(&lun->lun_lock); 894 page_index = &lun->mode_pages.index[index_to_aps_page]; 895 current_sp = (struct copan_aps_subpage *) 896 (page_index->page_data + 897 (page_index->page_len * CTL_PAGE_CURRENT)); 898 899 current_sp->lock_active = msg_info.aps.lock_flag; 900 mtx_unlock(&lun->lun_lock); 901 break; 902 } 903 default: 904 printf("How did I get here?\n"); 905 } 906 } else if (event == CTL_HA_EVT_MSG_SENT) { 907 if (param != CTL_HA_STATUS_SUCCESS) { 908 printf("Bad status from ctl_ha_msg_send status %d\n", 909 param); 910 } 911 return; 912 } else if (event == CTL_HA_EVT_DISCONNECT) { 913 printf("CTL: Got a disconnect from Isc\n"); 914 return; 915 } else { 916 printf("ctl_isc_event_handler: Unknown event %d\n", event); 917 return; 918 } 919 920bailout: 921 return; 922} 923 924static void 925ctl_copy_sense_data(union ctl_ha_msg *src, union ctl_io *dest) 926{ 927 struct scsi_sense_data *sense; 928 929 sense = &dest->scsiio.sense_data; 930 bcopy(&src->scsi.sense_data, sense, sizeof(*sense)); 931 dest->scsiio.scsi_status = src->scsi.scsi_status; 932 dest->scsiio.sense_len = src->scsi.sense_len; 933 dest->io_hdr.status = src->hdr.status; 934} 935 936static int 937ctl_init(void) 938{ 939 struct ctl_softc *softc; 940 struct ctl_io_pool *internal_pool, *emergency_pool, *other_pool; 941 struct ctl_port *port; 942 uint8_t sc_id =0; 943 int i, error, retval; 944 //int isc_retval; 945 946 retval = 0; 947 ctl_pause_rtr = 0; 948 rcv_sync_msg = 0; 949 950 control_softc = malloc(sizeof(*control_softc), M_DEVBUF, 951 M_WAITOK | M_ZERO); 952 softc = control_softc; 953 954 softc->dev = make_dev(&ctl_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, 955 "cam/ctl"); 956 957 softc->dev->si_drv1 = softc; 958 959 /* 960 * By default, return a "bad LUN" peripheral qualifier for unknown 961 * LUNs. The user can override this default using the tunable or 962 * sysctl. See the comment in ctl_inquiry_std() for more details. 963 */ 964 softc->inquiry_pq_no_lun = 1; 965 TUNABLE_INT_FETCH("kern.cam.ctl.inquiry_pq_no_lun", 966 &softc->inquiry_pq_no_lun); 967 sysctl_ctx_init(&softc->sysctl_ctx); 968 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 969 SYSCTL_STATIC_CHILDREN(_kern_cam), OID_AUTO, "ctl", 970 CTLFLAG_RD, 0, "CAM Target Layer"); 971 972 if (softc->sysctl_tree == NULL) { 973 printf("%s: unable to allocate sysctl tree\n", __func__); 974 destroy_dev(softc->dev); 975 free(control_softc, M_DEVBUF); 976 control_softc = NULL; 977 return (ENOMEM); 978 } 979 980 SYSCTL_ADD_INT(&softc->sysctl_ctx, 981 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, 982 "inquiry_pq_no_lun", CTLFLAG_RW, 983 &softc->inquiry_pq_no_lun, 0, 984 "Report no lun possible for invalid LUNs"); 985 986 mtx_init(&softc->ctl_lock, "CTL mutex", NULL, MTX_DEF); 987 mtx_init(&softc->pool_lock, "CTL pool mutex", NULL, MTX_DEF); 988 softc->open_count = 0; 989 990 /* 991 * Default to actually sending a SYNCHRONIZE CACHE command down to 992 * the drive. 993 */ 994 softc->flags = CTL_FLAG_REAL_SYNC; 995 996 /* 997 * In Copan's HA scheme, the "master" and "slave" roles are 998 * figured out through the slot the controller is in. Although it 999 * is an active/active system, someone has to be in charge. 1000 */ 1001#ifdef NEEDTOPORT 1002 scmicro_rw(SCMICRO_GET_SHELF_ID, &sc_id); 1003#endif 1004 1005 if (sc_id == 0) { 1006 softc->flags |= CTL_FLAG_MASTER_SHELF; 1007 persis_offset = 0; 1008 } else 1009 persis_offset = CTL_MAX_INITIATORS; 1010 1011 /* 1012 * XXX KDM need to figure out where we want to get our target ID 1013 * and WWID. Is it different on each port? 1014 */ 1015 softc->target.id = 0; 1016 softc->target.wwid[0] = 0x12345678; 1017 softc->target.wwid[1] = 0x87654321; 1018 STAILQ_INIT(&softc->lun_list); 1019 STAILQ_INIT(&softc->pending_lun_queue); 1020 STAILQ_INIT(&softc->fe_list); 1021 STAILQ_INIT(&softc->port_list); 1022 STAILQ_INIT(&softc->be_list); 1023 STAILQ_INIT(&softc->io_pools); 1024 1025 if (ctl_pool_create(softc, CTL_POOL_INTERNAL, CTL_POOL_ENTRIES_INTERNAL, 1026 &internal_pool)!= 0){ 1027 printf("ctl: can't allocate %d entry internal pool, " 1028 "exiting\n", CTL_POOL_ENTRIES_INTERNAL); 1029 return (ENOMEM); 1030 } 1031 1032 if (ctl_pool_create(softc, CTL_POOL_EMERGENCY, 1033 CTL_POOL_ENTRIES_EMERGENCY, &emergency_pool) != 0) { 1034 printf("ctl: can't allocate %d entry emergency pool, " 1035 "exiting\n", CTL_POOL_ENTRIES_EMERGENCY); 1036 ctl_pool_free(internal_pool); 1037 return (ENOMEM); 1038 } 1039 1040 if (ctl_pool_create(softc, CTL_POOL_4OTHERSC, CTL_POOL_ENTRIES_OTHER_SC, 1041 &other_pool) != 0) 1042 { 1043 printf("ctl: can't allocate %d entry other SC pool, " 1044 "exiting\n", CTL_POOL_ENTRIES_OTHER_SC); 1045 ctl_pool_free(internal_pool); 1046 ctl_pool_free(emergency_pool); 1047 return (ENOMEM); 1048 } 1049 1050 softc->internal_pool = internal_pool; 1051 softc->emergency_pool = emergency_pool; 1052 softc->othersc_pool = other_pool; 1053 1054 if (worker_threads <= 0) 1055 worker_threads = max(1, mp_ncpus / 4); 1056 if (worker_threads > CTL_MAX_THREADS) 1057 worker_threads = CTL_MAX_THREADS; 1058 1059 for (i = 0; i < worker_threads; i++) { 1060 struct ctl_thread *thr = &softc->threads[i]; 1061 1062 mtx_init(&thr->queue_lock, "CTL queue mutex", NULL, MTX_DEF); 1063 thr->ctl_softc = softc; 1064 STAILQ_INIT(&thr->incoming_queue); 1065 STAILQ_INIT(&thr->rtr_queue); 1066 STAILQ_INIT(&thr->done_queue); 1067 STAILQ_INIT(&thr->isc_queue); 1068 1069 error = kproc_kthread_add(ctl_work_thread, thr, 1070 &softc->ctl_proc, &thr->thread, 0, 0, "ctl", "work%d", i); 1071 if (error != 0) { 1072 printf("error creating CTL work thread!\n"); 1073 ctl_pool_free(internal_pool); 1074 ctl_pool_free(emergency_pool); 1075 ctl_pool_free(other_pool); 1076 return (error); 1077 } 1078 } 1079 error = kproc_kthread_add(ctl_lun_thread, softc, 1080 &softc->ctl_proc, NULL, 0, 0, "ctl", "lun"); 1081 if (error != 0) { 1082 printf("error creating CTL lun thread!\n"); 1083 ctl_pool_free(internal_pool); 1084 ctl_pool_free(emergency_pool); 1085 ctl_pool_free(other_pool); 1086 return (error); 1087 } 1088 if (bootverbose) 1089 printf("ctl: CAM Target Layer loaded\n"); 1090 1091 /* 1092 * Initialize the initiator and portname mappings 1093 */ 1094 memset(softc->wwpn_iid, 0, sizeof(softc->wwpn_iid)); 1095 1096 /* 1097 * Initialize the ioctl front end. 1098 */ 1099 ctl_frontend_register(&ioctl_frontend); 1100 port = &softc->ioctl_info.port; 1101 port->frontend = &ioctl_frontend; 1102 sprintf(softc->ioctl_info.port_name, "ioctl"); 1103 port->port_type = CTL_PORT_IOCTL; 1104 port->num_requested_ctl_io = 100; 1105 port->port_name = softc->ioctl_info.port_name; 1106 port->port_online = ctl_ioctl_online; 1107 port->port_offline = ctl_ioctl_offline; 1108 port->onoff_arg = &softc->ioctl_info; 1109 port->lun_enable = ctl_ioctl_lun_enable; 1110 port->lun_disable = ctl_ioctl_lun_disable; 1111 port->targ_lun_arg = &softc->ioctl_info; 1112 port->fe_datamove = ctl_ioctl_datamove; 1113 port->fe_done = ctl_ioctl_done; 1114 port->max_targets = 15; 1115 port->max_target_id = 15; 1116 1117 if (ctl_port_register(&softc->ioctl_info.port, 1118 (softc->flags & CTL_FLAG_MASTER_SHELF)) != 0) { 1119 printf("ctl: ioctl front end registration failed, will " 1120 "continue anyway\n"); 1121 } 1122 1123#ifdef CTL_IO_DELAY 1124 if (sizeof(struct callout) > CTL_TIMER_BYTES) { 1125 printf("sizeof(struct callout) %zd > CTL_TIMER_BYTES %zd\n", 1126 sizeof(struct callout), CTL_TIMER_BYTES); 1127 return (EINVAL); 1128 } 1129#endif /* CTL_IO_DELAY */ 1130 1131 return (0); 1132} 1133 1134void 1135ctl_shutdown(void) 1136{ 1137 struct ctl_softc *softc; 1138 struct ctl_lun *lun, *next_lun; 1139 struct ctl_io_pool *pool; 1140 1141 softc = (struct ctl_softc *)control_softc; 1142 1143 if (ctl_port_deregister(&softc->ioctl_info.port) != 0) 1144 printf("ctl: ioctl front end deregistration failed\n"); 1145 1146 mtx_lock(&softc->ctl_lock); 1147 1148 /* 1149 * Free up each LUN. 1150 */ 1151 for (lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; lun = next_lun){ 1152 next_lun = STAILQ_NEXT(lun, links); 1153 ctl_free_lun(lun); 1154 } 1155 1156 mtx_unlock(&softc->ctl_lock); 1157 1158 ctl_frontend_deregister(&ioctl_frontend); 1159 1160 /* 1161 * This will rip the rug out from under any FETDs or anyone else 1162 * that has a pool allocated. Since we increment our module 1163 * refcount any time someone outside the main CTL module allocates 1164 * a pool, we shouldn't have any problems here. The user won't be 1165 * able to unload the CTL module until client modules have 1166 * successfully unloaded. 1167 */ 1168 while ((pool = STAILQ_FIRST(&softc->io_pools)) != NULL) 1169 ctl_pool_free(pool); 1170 1171#if 0 1172 ctl_shutdown_thread(softc->work_thread); 1173 mtx_destroy(&softc->queue_lock); 1174#endif 1175 1176 mtx_destroy(&softc->pool_lock); 1177 mtx_destroy(&softc->ctl_lock); 1178 1179 destroy_dev(softc->dev); 1180 1181 sysctl_ctx_free(&softc->sysctl_ctx); 1182 1183 free(control_softc, M_DEVBUF); 1184 control_softc = NULL; 1185 1186 if (bootverbose) 1187 printf("ctl: CAM Target Layer unloaded\n"); 1188} 1189 1190static int 1191ctl_module_event_handler(module_t mod, int what, void *arg) 1192{ 1193 1194 switch (what) { 1195 case MOD_LOAD: 1196 return (ctl_init()); 1197 case MOD_UNLOAD: 1198 return (EBUSY); 1199 default: 1200 return (EOPNOTSUPP); 1201 } 1202} 1203 1204/* 1205 * XXX KDM should we do some access checks here? Bump a reference count to 1206 * prevent a CTL module from being unloaded while someone has it open? 1207 */ 1208static int 1209ctl_open(struct cdev *dev, int flags, int fmt, struct thread *td) 1210{ 1211 return (0); 1212} 1213 1214static int 1215ctl_close(struct cdev *dev, int flags, int fmt, struct thread *td) 1216{ 1217 return (0); 1218} 1219 1220int 1221ctl_port_enable(ctl_port_type port_type) 1222{ 1223 struct ctl_softc *softc; 1224 struct ctl_port *port; 1225 1226 if (ctl_is_single == 0) { 1227 union ctl_ha_msg msg_info; 1228 int isc_retval; 1229 1230#if 0 1231 printf("%s: HA mode, synchronizing frontend enable\n", 1232 __func__); 1233#endif 1234 msg_info.hdr.msg_type = CTL_MSG_SYNC_FE; 1235 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1236 sizeof(msg_info), 1 )) > CTL_HA_STATUS_SUCCESS) { 1237 printf("Sync msg send error retval %d\n", isc_retval); 1238 } 1239 if (!rcv_sync_msg) { 1240 isc_retval=ctl_ha_msg_recv(CTL_HA_CHAN_CTL, &msg_info, 1241 sizeof(msg_info), 1); 1242 } 1243#if 0 1244 printf("CTL:Frontend Enable\n"); 1245 } else { 1246 printf("%s: single mode, skipping frontend synchronization\n", 1247 __func__); 1248#endif 1249 } 1250 1251 softc = control_softc; 1252 1253 STAILQ_FOREACH(port, &softc->port_list, links) { 1254 if (port_type & port->port_type) 1255 { 1256#if 0 1257 printf("port %d\n", port->targ_port); 1258#endif 1259 ctl_port_online(port); 1260 } 1261 } 1262 1263 return (0); 1264} 1265 1266int 1267ctl_port_disable(ctl_port_type port_type) 1268{ 1269 struct ctl_softc *softc; 1270 struct ctl_port *port; 1271 1272 softc = control_softc; 1273 1274 STAILQ_FOREACH(port, &softc->port_list, links) { 1275 if (port_type & port->port_type) 1276 ctl_port_offline(port); 1277 } 1278 1279 return (0); 1280} 1281 1282/* 1283 * Returns 0 for success, 1 for failure. 1284 * Currently the only failure mode is if there aren't enough entries 1285 * allocated. So, in case of a failure, look at num_entries_dropped, 1286 * reallocate and try again. 1287 */ 1288int 1289ctl_port_list(struct ctl_port_entry *entries, int num_entries_alloced, 1290 int *num_entries_filled, int *num_entries_dropped, 1291 ctl_port_type port_type, int no_virtual) 1292{ 1293 struct ctl_softc *softc; 1294 struct ctl_port *port; 1295 int entries_dropped, entries_filled; 1296 int retval; 1297 int i; 1298 1299 softc = control_softc; 1300 1301 retval = 0; 1302 entries_filled = 0; 1303 entries_dropped = 0; 1304 1305 i = 0; 1306 mtx_lock(&softc->ctl_lock); 1307 STAILQ_FOREACH(port, &softc->port_list, links) { 1308 struct ctl_port_entry *entry; 1309 1310 if ((port->port_type & port_type) == 0) 1311 continue; 1312 1313 if ((no_virtual != 0) 1314 && (port->virtual_port != 0)) 1315 continue; 1316 1317 if (entries_filled >= num_entries_alloced) { 1318 entries_dropped++; 1319 continue; 1320 } 1321 entry = &entries[i]; 1322 1323 entry->port_type = port->port_type; 1324 strlcpy(entry->port_name, port->port_name, 1325 sizeof(entry->port_name)); 1326 entry->physical_port = port->physical_port; 1327 entry->virtual_port = port->virtual_port; 1328 entry->wwnn = port->wwnn; 1329 entry->wwpn = port->wwpn; 1330 1331 i++; 1332 entries_filled++; 1333 } 1334 1335 mtx_unlock(&softc->ctl_lock); 1336 1337 if (entries_dropped > 0) 1338 retval = 1; 1339 1340 *num_entries_dropped = entries_dropped; 1341 *num_entries_filled = entries_filled; 1342 1343 return (retval); 1344} 1345 1346static void 1347ctl_ioctl_online(void *arg) 1348{ 1349 struct ctl_ioctl_info *ioctl_info; 1350 1351 ioctl_info = (struct ctl_ioctl_info *)arg; 1352 1353 ioctl_info->flags |= CTL_IOCTL_FLAG_ENABLED; 1354} 1355 1356static void 1357ctl_ioctl_offline(void *arg) 1358{ 1359 struct ctl_ioctl_info *ioctl_info; 1360 1361 ioctl_info = (struct ctl_ioctl_info *)arg; 1362 1363 ioctl_info->flags &= ~CTL_IOCTL_FLAG_ENABLED; 1364} 1365 1366/* 1367 * Remove an initiator by port number and initiator ID. 1368 * Returns 0 for success, 1 for failure. 1369 */ 1370int 1371ctl_remove_initiator(int32_t targ_port, uint32_t iid) 1372{ 1373 struct ctl_softc *softc; 1374 1375 softc = control_softc; 1376 1377 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1378 1379 if ((targ_port < 0) 1380 || (targ_port > CTL_MAX_PORTS)) { 1381 printf("%s: invalid port number %d\n", __func__, targ_port); 1382 return (1); 1383 } 1384 if (iid > CTL_MAX_INIT_PER_PORT) { 1385 printf("%s: initiator ID %u > maximun %u!\n", 1386 __func__, iid, CTL_MAX_INIT_PER_PORT); 1387 return (1); 1388 } 1389 1390 mtx_lock(&softc->ctl_lock); 1391 1392 softc->wwpn_iid[targ_port][iid].in_use = 0; 1393 1394 mtx_unlock(&softc->ctl_lock); 1395 1396 return (0); 1397} 1398 1399/* 1400 * Add an initiator to the initiator map. 1401 * Returns 0 for success, 1 for failure. 1402 */ 1403int 1404ctl_add_initiator(uint64_t wwpn, int32_t targ_port, uint32_t iid) 1405{ 1406 struct ctl_softc *softc; 1407 int retval; 1408 1409 softc = control_softc; 1410 1411 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 1412 1413 retval = 0; 1414 1415 if ((targ_port < 0) 1416 || (targ_port > CTL_MAX_PORTS)) { 1417 printf("%s: invalid port number %d\n", __func__, targ_port); 1418 return (1); 1419 } 1420 if (iid > CTL_MAX_INIT_PER_PORT) { 1421 printf("%s: WWPN %#jx initiator ID %u > maximun %u!\n", 1422 __func__, wwpn, iid, CTL_MAX_INIT_PER_PORT); 1423 return (1); 1424 } 1425 1426 mtx_lock(&softc->ctl_lock); 1427 1428 if (softc->wwpn_iid[targ_port][iid].in_use != 0) { 1429 /* 1430 * We don't treat this as an error. 1431 */ 1432 if (softc->wwpn_iid[targ_port][iid].wwpn == wwpn) { 1433 printf("%s: port %d iid %u WWPN %#jx arrived again?\n", 1434 __func__, targ_port, iid, (uintmax_t)wwpn); 1435 goto bailout; 1436 } 1437 1438 /* 1439 * This is an error, but what do we do about it? The 1440 * driver is telling us we have a new WWPN for this 1441 * initiator ID, so we pretty much need to use it. 1442 */ 1443 printf("%s: port %d iid %u WWPN %#jx arrived, WWPN %#jx is " 1444 "still at that address\n", __func__, targ_port, iid, 1445 (uintmax_t)wwpn, 1446 (uintmax_t)softc->wwpn_iid[targ_port][iid].wwpn); 1447 1448 /* 1449 * XXX KDM clear have_ca and ua_pending on each LUN for 1450 * this initiator. 1451 */ 1452 } 1453 softc->wwpn_iid[targ_port][iid].in_use = 1; 1454 softc->wwpn_iid[targ_port][iid].iid = iid; 1455 softc->wwpn_iid[targ_port][iid].wwpn = wwpn; 1456 softc->wwpn_iid[targ_port][iid].port = targ_port; 1457 1458bailout: 1459 1460 mtx_unlock(&softc->ctl_lock); 1461 1462 return (retval); 1463} 1464 1465static int 1466ctl_ioctl_lun_enable(void *arg, struct ctl_id targ_id, int lun_id) 1467{ 1468 return (0); 1469} 1470 1471static int 1472ctl_ioctl_lun_disable(void *arg, struct ctl_id targ_id, int lun_id) 1473{ 1474 return (0); 1475} 1476 1477/* 1478 * Data movement routine for the CTL ioctl frontend port. 1479 */ 1480static int 1481ctl_ioctl_do_datamove(struct ctl_scsiio *ctsio) 1482{ 1483 struct ctl_sg_entry *ext_sglist, *kern_sglist; 1484 struct ctl_sg_entry ext_entry, kern_entry; 1485 int ext_sglen, ext_sg_entries, kern_sg_entries; 1486 int ext_sg_start, ext_offset; 1487 int len_to_copy, len_copied; 1488 int kern_watermark, ext_watermark; 1489 int ext_sglist_malloced; 1490 int i, j; 1491 1492 ext_sglist_malloced = 0; 1493 ext_sg_start = 0; 1494 ext_offset = 0; 1495 1496 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove\n")); 1497 1498 /* 1499 * If this flag is set, fake the data transfer. 1500 */ 1501 if (ctsio->io_hdr.flags & CTL_FLAG_NO_DATAMOVE) { 1502 ctsio->ext_data_filled = ctsio->ext_data_len; 1503 goto bailout; 1504 } 1505 1506 /* 1507 * To simplify things here, if we have a single buffer, stick it in 1508 * a S/G entry and just make it a single entry S/G list. 1509 */ 1510 if (ctsio->io_hdr.flags & CTL_FLAG_EDPTR_SGLIST) { 1511 int len_seen; 1512 1513 ext_sglen = ctsio->ext_sg_entries * sizeof(*ext_sglist); 1514 1515 ext_sglist = (struct ctl_sg_entry *)malloc(ext_sglen, M_CTL, 1516 M_WAITOK); 1517 ext_sglist_malloced = 1; 1518 if (copyin(ctsio->ext_data_ptr, ext_sglist, 1519 ext_sglen) != 0) { 1520 ctl_set_internal_failure(ctsio, 1521 /*sks_valid*/ 0, 1522 /*retry_count*/ 0); 1523 goto bailout; 1524 } 1525 ext_sg_entries = ctsio->ext_sg_entries; 1526 len_seen = 0; 1527 for (i = 0; i < ext_sg_entries; i++) { 1528 if ((len_seen + ext_sglist[i].len) >= 1529 ctsio->ext_data_filled) { 1530 ext_sg_start = i; 1531 ext_offset = ctsio->ext_data_filled - len_seen; 1532 break; 1533 } 1534 len_seen += ext_sglist[i].len; 1535 } 1536 } else { 1537 ext_sglist = &ext_entry; 1538 ext_sglist->addr = ctsio->ext_data_ptr; 1539 ext_sglist->len = ctsio->ext_data_len; 1540 ext_sg_entries = 1; 1541 ext_sg_start = 0; 1542 ext_offset = ctsio->ext_data_filled; 1543 } 1544 1545 if (ctsio->kern_sg_entries > 0) { 1546 kern_sglist = (struct ctl_sg_entry *)ctsio->kern_data_ptr; 1547 kern_sg_entries = ctsio->kern_sg_entries; 1548 } else { 1549 kern_sglist = &kern_entry; 1550 kern_sglist->addr = ctsio->kern_data_ptr; 1551 kern_sglist->len = ctsio->kern_data_len; 1552 kern_sg_entries = 1; 1553 } 1554 1555 1556 kern_watermark = 0; 1557 ext_watermark = ext_offset; 1558 len_copied = 0; 1559 for (i = ext_sg_start, j = 0; 1560 i < ext_sg_entries && j < kern_sg_entries;) { 1561 uint8_t *ext_ptr, *kern_ptr; 1562 1563 len_to_copy = ctl_min(ext_sglist[i].len - ext_watermark, 1564 kern_sglist[j].len - kern_watermark); 1565 1566 ext_ptr = (uint8_t *)ext_sglist[i].addr; 1567 ext_ptr = ext_ptr + ext_watermark; 1568 if (ctsio->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 1569 /* 1570 * XXX KDM fix this! 1571 */ 1572 panic("need to implement bus address support"); 1573#if 0 1574 kern_ptr = bus_to_virt(kern_sglist[j].addr); 1575#endif 1576 } else 1577 kern_ptr = (uint8_t *)kern_sglist[j].addr; 1578 kern_ptr = kern_ptr + kern_watermark; 1579 1580 kern_watermark += len_to_copy; 1581 ext_watermark += len_to_copy; 1582 1583 if ((ctsio->io_hdr.flags & CTL_FLAG_DATA_MASK) == 1584 CTL_FLAG_DATA_IN) { 1585 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1586 "bytes to user\n", len_to_copy)); 1587 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1588 "to %p\n", kern_ptr, ext_ptr)); 1589 if (copyout(kern_ptr, ext_ptr, len_to_copy) != 0) { 1590 ctl_set_internal_failure(ctsio, 1591 /*sks_valid*/ 0, 1592 /*retry_count*/ 0); 1593 goto bailout; 1594 } 1595 } else { 1596 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: copying %d " 1597 "bytes from user\n", len_to_copy)); 1598 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: from %p " 1599 "to %p\n", ext_ptr, kern_ptr)); 1600 if (copyin(ext_ptr, kern_ptr, len_to_copy)!= 0){ 1601 ctl_set_internal_failure(ctsio, 1602 /*sks_valid*/ 0, 1603 /*retry_count*/0); 1604 goto bailout; 1605 } 1606 } 1607 1608 len_copied += len_to_copy; 1609 1610 if (ext_sglist[i].len == ext_watermark) { 1611 i++; 1612 ext_watermark = 0; 1613 } 1614 1615 if (kern_sglist[j].len == kern_watermark) { 1616 j++; 1617 kern_watermark = 0; 1618 } 1619 } 1620 1621 ctsio->ext_data_filled += len_copied; 1622 1623 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_sg_entries: %d, " 1624 "kern_sg_entries: %d\n", ext_sg_entries, 1625 kern_sg_entries)); 1626 CTL_DEBUG_PRINT(("ctl_ioctl_do_datamove: ext_data_len = %d, " 1627 "kern_data_len = %d\n", ctsio->ext_data_len, 1628 ctsio->kern_data_len)); 1629 1630 1631 /* XXX KDM set residual?? */ 1632bailout: 1633 1634 if (ext_sglist_malloced != 0) 1635 free(ext_sglist, M_CTL); 1636 1637 return (CTL_RETVAL_COMPLETE); 1638} 1639 1640/* 1641 * Serialize a command that went down the "wrong" side, and so was sent to 1642 * this controller for execution. The logic is a little different than the 1643 * standard case in ctl_scsiio_precheck(). Errors in this case need to get 1644 * sent back to the other side, but in the success case, we execute the 1645 * command on this side (XFER mode) or tell the other side to execute it 1646 * (SER_ONLY mode). 1647 */ 1648static int 1649ctl_serialize_other_sc_cmd(struct ctl_scsiio *ctsio) 1650{ 1651 struct ctl_softc *ctl_softc; 1652 union ctl_ha_msg msg_info; 1653 struct ctl_lun *lun; 1654 int retval = 0; 1655 uint32_t targ_lun; 1656 1657 ctl_softc = control_softc; 1658 1659 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 1660 lun = ctl_softc->ctl_luns[targ_lun]; 1661 if (lun==NULL) 1662 { 1663 /* 1664 * Why isn't LUN defined? The other side wouldn't 1665 * send a cmd if the LUN is undefined. 1666 */ 1667 printf("%s: Bad JUJU!, LUN is NULL!\n", __func__); 1668 1669 /* "Logical unit not supported" */ 1670 ctl_set_sense_data(&msg_info.scsi.sense_data, 1671 lun, 1672 /*sense_format*/SSD_TYPE_NONE, 1673 /*current_error*/ 1, 1674 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1675 /*asc*/ 0x25, 1676 /*ascq*/ 0x00, 1677 SSD_ELEM_NONE); 1678 1679 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1680 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1681 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1682 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1683 msg_info.hdr.serializing_sc = NULL; 1684 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1685 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1686 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1687 } 1688 return(1); 1689 1690 } 1691 1692 mtx_lock(&lun->lun_lock); 1693 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1694 1695 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 1696 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, ctl_ooaq, 1697 ooa_links))) { 1698 case CTL_ACTION_BLOCK: 1699 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 1700 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 1701 blocked_links); 1702 break; 1703 case CTL_ACTION_PASS: 1704 case CTL_ACTION_SKIP: 1705 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 1706 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 1707 ctl_enqueue_rtr((union ctl_io *)ctsio); 1708 } else { 1709 1710 /* send msg back to other side */ 1711 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1712 msg_info.hdr.serializing_sc = (union ctl_io *)ctsio; 1713 msg_info.hdr.msg_type = CTL_MSG_R2R; 1714#if 0 1715 printf("2. pOrig %x\n", (int)msg_info.hdr.original_sc); 1716#endif 1717 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1718 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1719 } 1720 } 1721 break; 1722 case CTL_ACTION_OVERLAP: 1723 /* OVERLAPPED COMMANDS ATTEMPTED */ 1724 ctl_set_sense_data(&msg_info.scsi.sense_data, 1725 lun, 1726 /*sense_format*/SSD_TYPE_NONE, 1727 /*current_error*/ 1, 1728 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1729 /*asc*/ 0x4E, 1730 /*ascq*/ 0x00, 1731 SSD_ELEM_NONE); 1732 1733 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1734 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1735 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1736 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1737 msg_info.hdr.serializing_sc = NULL; 1738 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1739#if 0 1740 printf("BAD JUJU:Major Bummer Overlap\n"); 1741#endif 1742 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1743 retval = 1; 1744 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1745 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1746 } 1747 break; 1748 case CTL_ACTION_OVERLAP_TAG: 1749 /* TAGGED OVERLAPPED COMMANDS (NN = QUEUE TAG) */ 1750 ctl_set_sense_data(&msg_info.scsi.sense_data, 1751 lun, 1752 /*sense_format*/SSD_TYPE_NONE, 1753 /*current_error*/ 1, 1754 /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST, 1755 /*asc*/ 0x4D, 1756 /*ascq*/ ctsio->tag_num & 0xff, 1757 SSD_ELEM_NONE); 1758 1759 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1760 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1761 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1762 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1763 msg_info.hdr.serializing_sc = NULL; 1764 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1765#if 0 1766 printf("BAD JUJU:Major Bummer Overlap Tag\n"); 1767#endif 1768 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1769 retval = 1; 1770 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1771 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1772 } 1773 break; 1774 case CTL_ACTION_ERROR: 1775 default: 1776 /* "Internal target failure" */ 1777 ctl_set_sense_data(&msg_info.scsi.sense_data, 1778 lun, 1779 /*sense_format*/SSD_TYPE_NONE, 1780 /*current_error*/ 1, 1781 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 1782 /*asc*/ 0x44, 1783 /*ascq*/ 0x00, 1784 SSD_ELEM_NONE); 1785 1786 msg_info.scsi.sense_len = SSD_FULL_SIZE; 1787 msg_info.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 1788 msg_info.hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 1789 msg_info.hdr.original_sc = ctsio->io_hdr.original_sc; 1790 msg_info.hdr.serializing_sc = NULL; 1791 msg_info.hdr.msg_type = CTL_MSG_BAD_JUJU; 1792#if 0 1793 printf("BAD JUJU:Major Bummer HW Error\n"); 1794#endif 1795 TAILQ_REMOVE(&lun->ooa_queue, &ctsio->io_hdr, ooa_links); 1796 retval = 1; 1797 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_info, 1798 sizeof(msg_info), 0 ) > CTL_HA_STATUS_SUCCESS) { 1799 } 1800 break; 1801 } 1802 mtx_unlock(&lun->lun_lock); 1803 return (retval); 1804} 1805 1806static int 1807ctl_ioctl_submit_wait(union ctl_io *io) 1808{ 1809 struct ctl_fe_ioctl_params params; 1810 ctl_fe_ioctl_state last_state; 1811 int done, retval; 1812 1813 retval = 0; 1814 1815 bzero(¶ms, sizeof(params)); 1816 1817 mtx_init(¶ms.ioctl_mtx, "ctliocmtx", NULL, MTX_DEF); 1818 cv_init(¶ms.sem, "ctlioccv"); 1819 params.state = CTL_IOCTL_INPROG; 1820 last_state = params.state; 1821 1822 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = ¶ms; 1823 1824 CTL_DEBUG_PRINT(("ctl_ioctl_submit_wait\n")); 1825 1826 /* This shouldn't happen */ 1827 if ((retval = ctl_queue(io)) != CTL_RETVAL_COMPLETE) 1828 return (retval); 1829 1830 done = 0; 1831 1832 do { 1833 mtx_lock(¶ms.ioctl_mtx); 1834 /* 1835 * Check the state here, and don't sleep if the state has 1836 * already changed (i.e. wakeup has already occured, but we 1837 * weren't waiting yet). 1838 */ 1839 if (params.state == last_state) { 1840 /* XXX KDM cv_wait_sig instead? */ 1841 cv_wait(¶ms.sem, ¶ms.ioctl_mtx); 1842 } 1843 last_state = params.state; 1844 1845 switch (params.state) { 1846 case CTL_IOCTL_INPROG: 1847 /* Why did we wake up? */ 1848 /* XXX KDM error here? */ 1849 mtx_unlock(¶ms.ioctl_mtx); 1850 break; 1851 case CTL_IOCTL_DATAMOVE: 1852 CTL_DEBUG_PRINT(("got CTL_IOCTL_DATAMOVE\n")); 1853 1854 /* 1855 * change last_state back to INPROG to avoid 1856 * deadlock on subsequent data moves. 1857 */ 1858 params.state = last_state = CTL_IOCTL_INPROG; 1859 1860 mtx_unlock(¶ms.ioctl_mtx); 1861 ctl_ioctl_do_datamove(&io->scsiio); 1862 /* 1863 * Note that in some cases, most notably writes, 1864 * this will queue the I/O and call us back later. 1865 * In other cases, generally reads, this routine 1866 * will immediately call back and wake us up, 1867 * probably using our own context. 1868 */ 1869 io->scsiio.be_move_done(io); 1870 break; 1871 case CTL_IOCTL_DONE: 1872 mtx_unlock(¶ms.ioctl_mtx); 1873 CTL_DEBUG_PRINT(("got CTL_IOCTL_DONE\n")); 1874 done = 1; 1875 break; 1876 default: 1877 mtx_unlock(¶ms.ioctl_mtx); 1878 /* XXX KDM error here? */ 1879 break; 1880 } 1881 } while (done == 0); 1882 1883 mtx_destroy(¶ms.ioctl_mtx); 1884 cv_destroy(¶ms.sem); 1885 1886 return (CTL_RETVAL_COMPLETE); 1887} 1888 1889static void 1890ctl_ioctl_datamove(union ctl_io *io) 1891{ 1892 struct ctl_fe_ioctl_params *params; 1893 1894 params = (struct ctl_fe_ioctl_params *) 1895 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1896 1897 mtx_lock(¶ms->ioctl_mtx); 1898 params->state = CTL_IOCTL_DATAMOVE; 1899 cv_broadcast(¶ms->sem); 1900 mtx_unlock(¶ms->ioctl_mtx); 1901} 1902 1903static void 1904ctl_ioctl_done(union ctl_io *io) 1905{ 1906 struct ctl_fe_ioctl_params *params; 1907 1908 params = (struct ctl_fe_ioctl_params *) 1909 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1910 1911 mtx_lock(¶ms->ioctl_mtx); 1912 params->state = CTL_IOCTL_DONE; 1913 cv_broadcast(¶ms->sem); 1914 mtx_unlock(¶ms->ioctl_mtx); 1915} 1916 1917static void 1918ctl_ioctl_hard_startstop_callback(void *arg, struct cfi_metatask *metatask) 1919{ 1920 struct ctl_fe_ioctl_startstop_info *sd_info; 1921 1922 sd_info = (struct ctl_fe_ioctl_startstop_info *)arg; 1923 1924 sd_info->hs_info.status = metatask->status; 1925 sd_info->hs_info.total_luns = metatask->taskinfo.startstop.total_luns; 1926 sd_info->hs_info.luns_complete = 1927 metatask->taskinfo.startstop.luns_complete; 1928 sd_info->hs_info.luns_failed = metatask->taskinfo.startstop.luns_failed; 1929 1930 cv_broadcast(&sd_info->sem); 1931} 1932 1933static void 1934ctl_ioctl_bbrread_callback(void *arg, struct cfi_metatask *metatask) 1935{ 1936 struct ctl_fe_ioctl_bbrread_info *fe_bbr_info; 1937 1938 fe_bbr_info = (struct ctl_fe_ioctl_bbrread_info *)arg; 1939 1940 mtx_lock(fe_bbr_info->lock); 1941 fe_bbr_info->bbr_info->status = metatask->status; 1942 fe_bbr_info->bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 1943 fe_bbr_info->wakeup_done = 1; 1944 mtx_unlock(fe_bbr_info->lock); 1945 1946 cv_broadcast(&fe_bbr_info->sem); 1947} 1948 1949/* 1950 * Returns 0 for success, errno for failure. 1951 */ 1952static int 1953ctl_ioctl_fill_ooa(struct ctl_lun *lun, uint32_t *cur_fill_num, 1954 struct ctl_ooa *ooa_hdr, struct ctl_ooa_entry *kern_entries) 1955{ 1956 union ctl_io *io; 1957 int retval; 1958 1959 retval = 0; 1960 1961 mtx_lock(&lun->lun_lock); 1962 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); (io != NULL); 1963 (*cur_fill_num)++, io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 1964 ooa_links)) { 1965 struct ctl_ooa_entry *entry; 1966 1967 /* 1968 * If we've got more than we can fit, just count the 1969 * remaining entries. 1970 */ 1971 if (*cur_fill_num >= ooa_hdr->alloc_num) 1972 continue; 1973 1974 entry = &kern_entries[*cur_fill_num]; 1975 1976 entry->tag_num = io->scsiio.tag_num; 1977 entry->lun_num = lun->lun; 1978#ifdef CTL_TIME_IO 1979 entry->start_bt = io->io_hdr.start_bt; 1980#endif 1981 bcopy(io->scsiio.cdb, entry->cdb, io->scsiio.cdb_len); 1982 entry->cdb_len = io->scsiio.cdb_len; 1983 if (io->io_hdr.flags & CTL_FLAG_BLOCKED) 1984 entry->cmd_flags |= CTL_OOACMD_FLAG_BLOCKED; 1985 1986 if (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) 1987 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA; 1988 1989 if (io->io_hdr.flags & CTL_FLAG_ABORT) 1990 entry->cmd_flags |= CTL_OOACMD_FLAG_ABORT; 1991 1992 if (io->io_hdr.flags & CTL_FLAG_IS_WAS_ON_RTR) 1993 entry->cmd_flags |= CTL_OOACMD_FLAG_RTR; 1994 1995 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) 1996 entry->cmd_flags |= CTL_OOACMD_FLAG_DMA_QUEUED; 1997 } 1998 mtx_unlock(&lun->lun_lock); 1999 2000 return (retval); 2001} 2002 2003static void * 2004ctl_copyin_alloc(void *user_addr, int len, char *error_str, 2005 size_t error_str_len) 2006{ 2007 void *kptr; 2008 2009 kptr = malloc(len, M_CTL, M_WAITOK | M_ZERO); 2010 2011 if (copyin(user_addr, kptr, len) != 0) { 2012 snprintf(error_str, error_str_len, "Error copying %d bytes " 2013 "from user address %p to kernel address %p", len, 2014 user_addr, kptr); 2015 free(kptr, M_CTL); 2016 return (NULL); 2017 } 2018 2019 return (kptr); 2020} 2021 2022static void 2023ctl_free_args(int num_args, struct ctl_be_arg *args) 2024{ 2025 int i; 2026 2027 if (args == NULL) 2028 return; 2029 2030 for (i = 0; i < num_args; i++) { 2031 free(args[i].kname, M_CTL); 2032 free(args[i].kvalue, M_CTL); 2033 } 2034 2035 free(args, M_CTL); 2036} 2037 2038static struct ctl_be_arg * 2039ctl_copyin_args(int num_args, struct ctl_be_arg *uargs, 2040 char *error_str, size_t error_str_len) 2041{ 2042 struct ctl_be_arg *args; 2043 int i; 2044 2045 args = ctl_copyin_alloc(uargs, num_args * sizeof(*args), 2046 error_str, error_str_len); 2047 2048 if (args == NULL) 2049 goto bailout; 2050 2051 for (i = 0; i < num_args; i++) { 2052 args[i].kname = NULL; 2053 args[i].kvalue = NULL; 2054 } 2055 2056 for (i = 0; i < num_args; i++) { 2057 uint8_t *tmpptr; 2058 2059 args[i].kname = ctl_copyin_alloc(args[i].name, 2060 args[i].namelen, error_str, error_str_len); 2061 if (args[i].kname == NULL) 2062 goto bailout; 2063 2064 if (args[i].kname[args[i].namelen - 1] != '\0') { 2065 snprintf(error_str, error_str_len, "Argument %d " 2066 "name is not NUL-terminated", i); 2067 goto bailout; 2068 } 2069 2070 if (args[i].flags & CTL_BEARG_RD) { 2071 tmpptr = ctl_copyin_alloc(args[i].value, 2072 args[i].vallen, error_str, error_str_len); 2073 if (tmpptr == NULL) 2074 goto bailout; 2075 if ((args[i].flags & CTL_BEARG_ASCII) 2076 && (tmpptr[args[i].vallen - 1] != '\0')) { 2077 snprintf(error_str, error_str_len, "Argument " 2078 "%d value is not NUL-terminated", i); 2079 goto bailout; 2080 } 2081 args[i].kvalue = tmpptr; 2082 } else { 2083 args[i].kvalue = malloc(args[i].vallen, 2084 M_CTL, M_WAITOK | M_ZERO); 2085 } 2086 } 2087 2088 return (args); 2089bailout: 2090 2091 ctl_free_args(num_args, args); 2092 2093 return (NULL); 2094} 2095 2096static void 2097ctl_copyout_args(int num_args, struct ctl_be_arg *args) 2098{ 2099 int i; 2100 2101 for (i = 0; i < num_args; i++) { 2102 if (args[i].flags & CTL_BEARG_WR) 2103 copyout(args[i].kvalue, args[i].value, args[i].vallen); 2104 } 2105} 2106 2107/* 2108 * Escape characters that are illegal or not recommended in XML. 2109 */ 2110int 2111ctl_sbuf_printf_esc(struct sbuf *sb, char *str) 2112{ 2113 int retval; 2114 2115 retval = 0; 2116 2117 for (; *str; str++) { 2118 switch (*str) { 2119 case '&': 2120 retval = sbuf_printf(sb, "&"); 2121 break; 2122 case '>': 2123 retval = sbuf_printf(sb, ">"); 2124 break; 2125 case '<': 2126 retval = sbuf_printf(sb, "<"); 2127 break; 2128 default: 2129 retval = sbuf_putc(sb, *str); 2130 break; 2131 } 2132 2133 if (retval != 0) 2134 break; 2135 2136 } 2137 2138 return (retval); 2139} 2140 2141static int 2142ctl_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, 2143 struct thread *td) 2144{ 2145 struct ctl_softc *softc; 2146 int retval; 2147 2148 softc = control_softc; 2149 2150 retval = 0; 2151 2152 switch (cmd) { 2153 case CTL_IO: { 2154 union ctl_io *io; 2155 void *pool_tmp; 2156 2157 /* 2158 * If we haven't been "enabled", don't allow any SCSI I/O 2159 * to this FETD. 2160 */ 2161 if ((softc->ioctl_info.flags & CTL_IOCTL_FLAG_ENABLED) == 0) { 2162 retval = EPERM; 2163 break; 2164 } 2165 2166 io = ctl_alloc_io(softc->ioctl_info.port.ctl_pool_ref); 2167 if (io == NULL) { 2168 printf("ctl_ioctl: can't allocate ctl_io!\n"); 2169 retval = ENOSPC; 2170 break; 2171 } 2172 2173 /* 2174 * Need to save the pool reference so it doesn't get 2175 * spammed by the user's ctl_io. 2176 */ 2177 pool_tmp = io->io_hdr.pool; 2178 2179 memcpy(io, (void *)addr, sizeof(*io)); 2180 2181 io->io_hdr.pool = pool_tmp; 2182 /* 2183 * No status yet, so make sure the status is set properly. 2184 */ 2185 io->io_hdr.status = CTL_STATUS_NONE; 2186 2187 /* 2188 * The user sets the initiator ID, target and LUN IDs. 2189 */ 2190 io->io_hdr.nexus.targ_port = softc->ioctl_info.port.targ_port; 2191 io->io_hdr.flags |= CTL_FLAG_USER_REQ; 2192 if ((io->io_hdr.io_type == CTL_IO_SCSI) 2193 && (io->scsiio.tag_type != CTL_TAG_UNTAGGED)) 2194 io->scsiio.tag_num = softc->ioctl_info.cur_tag_num++; 2195 2196 retval = ctl_ioctl_submit_wait(io); 2197 2198 if (retval != 0) { 2199 ctl_free_io(io); 2200 break; 2201 } 2202 2203 memcpy((void *)addr, io, sizeof(*io)); 2204 2205 /* return this to our pool */ 2206 ctl_free_io(io); 2207 2208 break; 2209 } 2210 case CTL_ENABLE_PORT: 2211 case CTL_DISABLE_PORT: 2212 case CTL_SET_PORT_WWNS: { 2213 struct ctl_port *port; 2214 struct ctl_port_entry *entry; 2215 2216 entry = (struct ctl_port_entry *)addr; 2217 2218 mtx_lock(&softc->ctl_lock); 2219 STAILQ_FOREACH(port, &softc->port_list, links) { 2220 int action, done; 2221 2222 action = 0; 2223 done = 0; 2224 2225 if ((entry->port_type == CTL_PORT_NONE) 2226 && (entry->targ_port == port->targ_port)) { 2227 /* 2228 * If the user only wants to enable or 2229 * disable or set WWNs on a specific port, 2230 * do the operation and we're done. 2231 */ 2232 action = 1; 2233 done = 1; 2234 } else if (entry->port_type & port->port_type) { 2235 /* 2236 * Compare the user's type mask with the 2237 * particular frontend type to see if we 2238 * have a match. 2239 */ 2240 action = 1; 2241 done = 0; 2242 2243 /* 2244 * Make sure the user isn't trying to set 2245 * WWNs on multiple ports at the same time. 2246 */ 2247 if (cmd == CTL_SET_PORT_WWNS) { 2248 printf("%s: Can't set WWNs on " 2249 "multiple ports\n", __func__); 2250 retval = EINVAL; 2251 break; 2252 } 2253 } 2254 if (action != 0) { 2255 /* 2256 * XXX KDM we have to drop the lock here, 2257 * because the online/offline operations 2258 * can potentially block. We need to 2259 * reference count the frontends so they 2260 * can't go away, 2261 */ 2262 mtx_unlock(&softc->ctl_lock); 2263 2264 if (cmd == CTL_ENABLE_PORT) { 2265 struct ctl_lun *lun; 2266 2267 STAILQ_FOREACH(lun, &softc->lun_list, 2268 links) { 2269 port->lun_enable(port->targ_lun_arg, 2270 lun->target, 2271 lun->lun); 2272 } 2273 2274 ctl_port_online(port); 2275 } else if (cmd == CTL_DISABLE_PORT) { 2276 struct ctl_lun *lun; 2277 2278 ctl_port_offline(port); 2279 2280 STAILQ_FOREACH(lun, &softc->lun_list, 2281 links) { 2282 port->lun_disable( 2283 port->targ_lun_arg, 2284 lun->target, 2285 lun->lun); 2286 } 2287 } 2288 2289 mtx_lock(&softc->ctl_lock); 2290 2291 if (cmd == CTL_SET_PORT_WWNS) 2292 ctl_port_set_wwns(port, 2293 (entry->flags & CTL_PORT_WWNN_VALID) ? 2294 1 : 0, entry->wwnn, 2295 (entry->flags & CTL_PORT_WWPN_VALID) ? 2296 1 : 0, entry->wwpn); 2297 } 2298 if (done != 0) 2299 break; 2300 } 2301 mtx_unlock(&softc->ctl_lock); 2302 break; 2303 } 2304 case CTL_GET_PORT_LIST: { 2305 struct ctl_port *port; 2306 struct ctl_port_list *list; 2307 int i; 2308 2309 list = (struct ctl_port_list *)addr; 2310 2311 if (list->alloc_len != (list->alloc_num * 2312 sizeof(struct ctl_port_entry))) { 2313 printf("%s: CTL_GET_PORT_LIST: alloc_len %u != " 2314 "alloc_num %u * sizeof(struct ctl_port_entry) " 2315 "%zu\n", __func__, list->alloc_len, 2316 list->alloc_num, sizeof(struct ctl_port_entry)); 2317 retval = EINVAL; 2318 break; 2319 } 2320 list->fill_len = 0; 2321 list->fill_num = 0; 2322 list->dropped_num = 0; 2323 i = 0; 2324 mtx_lock(&softc->ctl_lock); 2325 STAILQ_FOREACH(port, &softc->port_list, links) { 2326 struct ctl_port_entry entry, *list_entry; 2327 2328 if (list->fill_num >= list->alloc_num) { 2329 list->dropped_num++; 2330 continue; 2331 } 2332 2333 entry.port_type = port->port_type; 2334 strlcpy(entry.port_name, port->port_name, 2335 sizeof(entry.port_name)); 2336 entry.targ_port = port->targ_port; 2337 entry.physical_port = port->physical_port; 2338 entry.virtual_port = port->virtual_port; 2339 entry.wwnn = port->wwnn; 2340 entry.wwpn = port->wwpn; 2341 if (port->status & CTL_PORT_STATUS_ONLINE) 2342 entry.online = 1; 2343 else 2344 entry.online = 0; 2345 2346 list_entry = &list->entries[i]; 2347 2348 retval = copyout(&entry, list_entry, sizeof(entry)); 2349 if (retval != 0) { 2350 printf("%s: CTL_GET_PORT_LIST: copyout " 2351 "returned %d\n", __func__, retval); 2352 break; 2353 } 2354 i++; 2355 list->fill_num++; 2356 list->fill_len += sizeof(entry); 2357 } 2358 mtx_unlock(&softc->ctl_lock); 2359 2360 /* 2361 * If this is non-zero, we had a copyout fault, so there's 2362 * probably no point in attempting to set the status inside 2363 * the structure. 2364 */ 2365 if (retval != 0) 2366 break; 2367 2368 if (list->dropped_num > 0) 2369 list->status = CTL_PORT_LIST_NEED_MORE_SPACE; 2370 else 2371 list->status = CTL_PORT_LIST_OK; 2372 break; 2373 } 2374 case CTL_DUMP_OOA: { 2375 struct ctl_lun *lun; 2376 union ctl_io *io; 2377 char printbuf[128]; 2378 struct sbuf sb; 2379 2380 mtx_lock(&softc->ctl_lock); 2381 printf("Dumping OOA queues:\n"); 2382 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2383 mtx_lock(&lun->lun_lock); 2384 for (io = (union ctl_io *)TAILQ_FIRST( 2385 &lun->ooa_queue); io != NULL; 2386 io = (union ctl_io *)TAILQ_NEXT(&io->io_hdr, 2387 ooa_links)) { 2388 sbuf_new(&sb, printbuf, sizeof(printbuf), 2389 SBUF_FIXEDLEN); 2390 sbuf_printf(&sb, "LUN %jd tag 0x%04x%s%s%s%s: ", 2391 (intmax_t)lun->lun, 2392 io->scsiio.tag_num, 2393 (io->io_hdr.flags & 2394 CTL_FLAG_BLOCKED) ? "" : " BLOCKED", 2395 (io->io_hdr.flags & 2396 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 2397 (io->io_hdr.flags & 2398 CTL_FLAG_ABORT) ? " ABORT" : "", 2399 (io->io_hdr.flags & 2400 CTL_FLAG_IS_WAS_ON_RTR) ? " RTR" : ""); 2401 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 2402 sbuf_finish(&sb); 2403 printf("%s\n", sbuf_data(&sb)); 2404 } 2405 mtx_unlock(&lun->lun_lock); 2406 } 2407 printf("OOA queues dump done\n"); 2408 mtx_unlock(&softc->ctl_lock); 2409 break; 2410 } 2411 case CTL_GET_OOA: { 2412 struct ctl_lun *lun; 2413 struct ctl_ooa *ooa_hdr; 2414 struct ctl_ooa_entry *entries; 2415 uint32_t cur_fill_num; 2416 2417 ooa_hdr = (struct ctl_ooa *)addr; 2418 2419 if ((ooa_hdr->alloc_len == 0) 2420 || (ooa_hdr->alloc_num == 0)) { 2421 printf("%s: CTL_GET_OOA: alloc len %u and alloc num %u " 2422 "must be non-zero\n", __func__, 2423 ooa_hdr->alloc_len, ooa_hdr->alloc_num); 2424 retval = EINVAL; 2425 break; 2426 } 2427 2428 if (ooa_hdr->alloc_len != (ooa_hdr->alloc_num * 2429 sizeof(struct ctl_ooa_entry))) { 2430 printf("%s: CTL_GET_OOA: alloc len %u must be alloc " 2431 "num %d * sizeof(struct ctl_ooa_entry) %zd\n", 2432 __func__, ooa_hdr->alloc_len, 2433 ooa_hdr->alloc_num,sizeof(struct ctl_ooa_entry)); 2434 retval = EINVAL; 2435 break; 2436 } 2437 2438 entries = malloc(ooa_hdr->alloc_len, M_CTL, M_WAITOK | M_ZERO); 2439 if (entries == NULL) { 2440 printf("%s: could not allocate %d bytes for OOA " 2441 "dump\n", __func__, ooa_hdr->alloc_len); 2442 retval = ENOMEM; 2443 break; 2444 } 2445 2446 mtx_lock(&softc->ctl_lock); 2447 if (((ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) == 0) 2448 && ((ooa_hdr->lun_num > CTL_MAX_LUNS) 2449 || (softc->ctl_luns[ooa_hdr->lun_num] == NULL))) { 2450 mtx_unlock(&softc->ctl_lock); 2451 free(entries, M_CTL); 2452 printf("%s: CTL_GET_OOA: invalid LUN %ju\n", 2453 __func__, (uintmax_t)ooa_hdr->lun_num); 2454 retval = EINVAL; 2455 break; 2456 } 2457 2458 cur_fill_num = 0; 2459 2460 if (ooa_hdr->flags & CTL_OOA_FLAG_ALL_LUNS) { 2461 STAILQ_FOREACH(lun, &softc->lun_list, links) { 2462 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num, 2463 ooa_hdr, entries); 2464 if (retval != 0) 2465 break; 2466 } 2467 if (retval != 0) { 2468 mtx_unlock(&softc->ctl_lock); 2469 free(entries, M_CTL); 2470 break; 2471 } 2472 } else { 2473 lun = softc->ctl_luns[ooa_hdr->lun_num]; 2474 2475 retval = ctl_ioctl_fill_ooa(lun, &cur_fill_num,ooa_hdr, 2476 entries); 2477 } 2478 mtx_unlock(&softc->ctl_lock); 2479 2480 ooa_hdr->fill_num = min(cur_fill_num, ooa_hdr->alloc_num); 2481 ooa_hdr->fill_len = ooa_hdr->fill_num * 2482 sizeof(struct ctl_ooa_entry); 2483 retval = copyout(entries, ooa_hdr->entries, ooa_hdr->fill_len); 2484 if (retval != 0) { 2485 printf("%s: error copying out %d bytes for OOA dump\n", 2486 __func__, ooa_hdr->fill_len); 2487 } 2488 2489 getbintime(&ooa_hdr->cur_bt); 2490 2491 if (cur_fill_num > ooa_hdr->alloc_num) { 2492 ooa_hdr->dropped_num = cur_fill_num -ooa_hdr->alloc_num; 2493 ooa_hdr->status = CTL_OOA_NEED_MORE_SPACE; 2494 } else { 2495 ooa_hdr->dropped_num = 0; 2496 ooa_hdr->status = CTL_OOA_OK; 2497 } 2498 2499 free(entries, M_CTL); 2500 break; 2501 } 2502 case CTL_CHECK_OOA: { 2503 union ctl_io *io; 2504 struct ctl_lun *lun; 2505 struct ctl_ooa_info *ooa_info; 2506 2507 2508 ooa_info = (struct ctl_ooa_info *)addr; 2509 2510 if (ooa_info->lun_id >= CTL_MAX_LUNS) { 2511 ooa_info->status = CTL_OOA_INVALID_LUN; 2512 break; 2513 } 2514 mtx_lock(&softc->ctl_lock); 2515 lun = softc->ctl_luns[ooa_info->lun_id]; 2516 if (lun == NULL) { 2517 mtx_unlock(&softc->ctl_lock); 2518 ooa_info->status = CTL_OOA_INVALID_LUN; 2519 break; 2520 } 2521 mtx_lock(&lun->lun_lock); 2522 mtx_unlock(&softc->ctl_lock); 2523 ooa_info->num_entries = 0; 2524 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 2525 io != NULL; io = (union ctl_io *)TAILQ_NEXT( 2526 &io->io_hdr, ooa_links)) { 2527 ooa_info->num_entries++; 2528 } 2529 mtx_unlock(&lun->lun_lock); 2530 2531 ooa_info->status = CTL_OOA_SUCCESS; 2532 2533 break; 2534 } 2535 case CTL_HARD_START: 2536 case CTL_HARD_STOP: { 2537 struct ctl_fe_ioctl_startstop_info ss_info; 2538 struct cfi_metatask *metatask; 2539 struct mtx hs_mtx; 2540 2541 mtx_init(&hs_mtx, "HS Mutex", NULL, MTX_DEF); 2542 2543 cv_init(&ss_info.sem, "hard start/stop cv" ); 2544 2545 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2546 if (metatask == NULL) { 2547 retval = ENOMEM; 2548 mtx_destroy(&hs_mtx); 2549 break; 2550 } 2551 2552 if (cmd == CTL_HARD_START) 2553 metatask->tasktype = CFI_TASK_STARTUP; 2554 else 2555 metatask->tasktype = CFI_TASK_SHUTDOWN; 2556 2557 metatask->callback = ctl_ioctl_hard_startstop_callback; 2558 metatask->callback_arg = &ss_info; 2559 2560 cfi_action(metatask); 2561 2562 /* Wait for the callback */ 2563 mtx_lock(&hs_mtx); 2564 cv_wait_sig(&ss_info.sem, &hs_mtx); 2565 mtx_unlock(&hs_mtx); 2566 2567 /* 2568 * All information has been copied from the metatask by the 2569 * time cv_broadcast() is called, so we free the metatask here. 2570 */ 2571 cfi_free_metatask(metatask); 2572 2573 memcpy((void *)addr, &ss_info.hs_info, sizeof(ss_info.hs_info)); 2574 2575 mtx_destroy(&hs_mtx); 2576 break; 2577 } 2578 case CTL_BBRREAD: { 2579 struct ctl_bbrread_info *bbr_info; 2580 struct ctl_fe_ioctl_bbrread_info fe_bbr_info; 2581 struct mtx bbr_mtx; 2582 struct cfi_metatask *metatask; 2583 2584 bbr_info = (struct ctl_bbrread_info *)addr; 2585 2586 bzero(&fe_bbr_info, sizeof(fe_bbr_info)); 2587 2588 bzero(&bbr_mtx, sizeof(bbr_mtx)); 2589 mtx_init(&bbr_mtx, "BBR Mutex", NULL, MTX_DEF); 2590 2591 fe_bbr_info.bbr_info = bbr_info; 2592 fe_bbr_info.lock = &bbr_mtx; 2593 2594 cv_init(&fe_bbr_info.sem, "BBR read cv"); 2595 metatask = cfi_alloc_metatask(/*can_wait*/ 1); 2596 2597 if (metatask == NULL) { 2598 mtx_destroy(&bbr_mtx); 2599 cv_destroy(&fe_bbr_info.sem); 2600 retval = ENOMEM; 2601 break; 2602 } 2603 metatask->tasktype = CFI_TASK_BBRREAD; 2604 metatask->callback = ctl_ioctl_bbrread_callback; 2605 metatask->callback_arg = &fe_bbr_info; 2606 metatask->taskinfo.bbrread.lun_num = bbr_info->lun_num; 2607 metatask->taskinfo.bbrread.lba = bbr_info->lba; 2608 metatask->taskinfo.bbrread.len = bbr_info->len; 2609 2610 cfi_action(metatask); 2611 2612 mtx_lock(&bbr_mtx); 2613 while (fe_bbr_info.wakeup_done == 0) 2614 cv_wait_sig(&fe_bbr_info.sem, &bbr_mtx); 2615 mtx_unlock(&bbr_mtx); 2616 2617 bbr_info->status = metatask->status; 2618 bbr_info->bbr_status = metatask->taskinfo.bbrread.status; 2619 bbr_info->scsi_status = metatask->taskinfo.bbrread.scsi_status; 2620 memcpy(&bbr_info->sense_data, 2621 &metatask->taskinfo.bbrread.sense_data, 2622 ctl_min(sizeof(bbr_info->sense_data), 2623 sizeof(metatask->taskinfo.bbrread.sense_data))); 2624 2625 cfi_free_metatask(metatask); 2626 2627 mtx_destroy(&bbr_mtx); 2628 cv_destroy(&fe_bbr_info.sem); 2629 2630 break; 2631 } 2632 case CTL_DELAY_IO: { 2633 struct ctl_io_delay_info *delay_info; 2634#ifdef CTL_IO_DELAY 2635 struct ctl_lun *lun; 2636#endif /* CTL_IO_DELAY */ 2637 2638 delay_info = (struct ctl_io_delay_info *)addr; 2639 2640#ifdef CTL_IO_DELAY 2641 mtx_lock(&softc->ctl_lock); 2642 2643 if ((delay_info->lun_id > CTL_MAX_LUNS) 2644 || (softc->ctl_luns[delay_info->lun_id] == NULL)) { 2645 delay_info->status = CTL_DELAY_STATUS_INVALID_LUN; 2646 } else { 2647 lun = softc->ctl_luns[delay_info->lun_id]; 2648 mtx_lock(&lun->lun_lock); 2649 2650 delay_info->status = CTL_DELAY_STATUS_OK; 2651 2652 switch (delay_info->delay_type) { 2653 case CTL_DELAY_TYPE_CONT: 2654 break; 2655 case CTL_DELAY_TYPE_ONESHOT: 2656 break; 2657 default: 2658 delay_info->status = 2659 CTL_DELAY_STATUS_INVALID_TYPE; 2660 break; 2661 } 2662 2663 switch (delay_info->delay_loc) { 2664 case CTL_DELAY_LOC_DATAMOVE: 2665 lun->delay_info.datamove_type = 2666 delay_info->delay_type; 2667 lun->delay_info.datamove_delay = 2668 delay_info->delay_secs; 2669 break; 2670 case CTL_DELAY_LOC_DONE: 2671 lun->delay_info.done_type = 2672 delay_info->delay_type; 2673 lun->delay_info.done_delay = 2674 delay_info->delay_secs; 2675 break; 2676 default: 2677 delay_info->status = 2678 CTL_DELAY_STATUS_INVALID_LOC; 2679 break; 2680 } 2681 mtx_unlock(&lun->lun_lock); 2682 } 2683 2684 mtx_unlock(&softc->ctl_lock); 2685#else 2686 delay_info->status = CTL_DELAY_STATUS_NOT_IMPLEMENTED; 2687#endif /* CTL_IO_DELAY */ 2688 break; 2689 } 2690 case CTL_REALSYNC_SET: { 2691 int *syncstate; 2692 2693 syncstate = (int *)addr; 2694 2695 mtx_lock(&softc->ctl_lock); 2696 switch (*syncstate) { 2697 case 0: 2698 softc->flags &= ~CTL_FLAG_REAL_SYNC; 2699 break; 2700 case 1: 2701 softc->flags |= CTL_FLAG_REAL_SYNC; 2702 break; 2703 default: 2704 retval = EINVAL; 2705 break; 2706 } 2707 mtx_unlock(&softc->ctl_lock); 2708 break; 2709 } 2710 case CTL_REALSYNC_GET: { 2711 int *syncstate; 2712 2713 syncstate = (int*)addr; 2714 2715 mtx_lock(&softc->ctl_lock); 2716 if (softc->flags & CTL_FLAG_REAL_SYNC) 2717 *syncstate = 1; 2718 else 2719 *syncstate = 0; 2720 mtx_unlock(&softc->ctl_lock); 2721 2722 break; 2723 } 2724 case CTL_SETSYNC: 2725 case CTL_GETSYNC: { 2726 struct ctl_sync_info *sync_info; 2727 struct ctl_lun *lun; 2728 2729 sync_info = (struct ctl_sync_info *)addr; 2730 2731 mtx_lock(&softc->ctl_lock); 2732 lun = softc->ctl_luns[sync_info->lun_id]; 2733 if (lun == NULL) { 2734 mtx_unlock(&softc->ctl_lock); 2735 sync_info->status = CTL_GS_SYNC_NO_LUN; 2736 } 2737 /* 2738 * Get or set the sync interval. We're not bounds checking 2739 * in the set case, hopefully the user won't do something 2740 * silly. 2741 */ 2742 mtx_lock(&lun->lun_lock); 2743 mtx_unlock(&softc->ctl_lock); 2744 if (cmd == CTL_GETSYNC) 2745 sync_info->sync_interval = lun->sync_interval; 2746 else 2747 lun->sync_interval = sync_info->sync_interval; 2748 mtx_unlock(&lun->lun_lock); 2749 2750 sync_info->status = CTL_GS_SYNC_OK; 2751 2752 break; 2753 } 2754 case CTL_GETSTATS: { 2755 struct ctl_stats *stats; 2756 struct ctl_lun *lun; 2757 int i; 2758 2759 stats = (struct ctl_stats *)addr; 2760 2761 if ((sizeof(struct ctl_lun_io_stats) * softc->num_luns) > 2762 stats->alloc_len) { 2763 stats->status = CTL_SS_NEED_MORE_SPACE; 2764 stats->num_luns = softc->num_luns; 2765 break; 2766 } 2767 /* 2768 * XXX KDM no locking here. If the LUN list changes, 2769 * things can blow up. 2770 */ 2771 for (i = 0, lun = STAILQ_FIRST(&softc->lun_list); lun != NULL; 2772 i++, lun = STAILQ_NEXT(lun, links)) { 2773 retval = copyout(&lun->stats, &stats->lun_stats[i], 2774 sizeof(lun->stats)); 2775 if (retval != 0) 2776 break; 2777 } 2778 stats->num_luns = softc->num_luns; 2779 stats->fill_len = sizeof(struct ctl_lun_io_stats) * 2780 softc->num_luns; 2781 stats->status = CTL_SS_OK; 2782#ifdef CTL_TIME_IO 2783 stats->flags = CTL_STATS_FLAG_TIME_VALID; 2784#else 2785 stats->flags = CTL_STATS_FLAG_NONE; 2786#endif 2787 getnanouptime(&stats->timestamp); 2788 break; 2789 } 2790 case CTL_ERROR_INJECT: { 2791 struct ctl_error_desc *err_desc, *new_err_desc; 2792 struct ctl_lun *lun; 2793 2794 err_desc = (struct ctl_error_desc *)addr; 2795 2796 new_err_desc = malloc(sizeof(*new_err_desc), M_CTL, 2797 M_WAITOK | M_ZERO); 2798 bcopy(err_desc, new_err_desc, sizeof(*new_err_desc)); 2799 2800 mtx_lock(&softc->ctl_lock); 2801 lun = softc->ctl_luns[err_desc->lun_id]; 2802 if (lun == NULL) { 2803 mtx_unlock(&softc->ctl_lock); 2804 printf("%s: CTL_ERROR_INJECT: invalid LUN %ju\n", 2805 __func__, (uintmax_t)err_desc->lun_id); 2806 retval = EINVAL; 2807 break; 2808 } 2809 mtx_lock(&lun->lun_lock); 2810 mtx_unlock(&softc->ctl_lock); 2811 2812 /* 2813 * We could do some checking here to verify the validity 2814 * of the request, but given the complexity of error 2815 * injection requests, the checking logic would be fairly 2816 * complex. 2817 * 2818 * For now, if the request is invalid, it just won't get 2819 * executed and might get deleted. 2820 */ 2821 STAILQ_INSERT_TAIL(&lun->error_list, new_err_desc, links); 2822 2823 /* 2824 * XXX KDM check to make sure the serial number is unique, 2825 * in case we somehow manage to wrap. That shouldn't 2826 * happen for a very long time, but it's the right thing to 2827 * do. 2828 */ 2829 new_err_desc->serial = lun->error_serial; 2830 err_desc->serial = lun->error_serial; 2831 lun->error_serial++; 2832 2833 mtx_unlock(&lun->lun_lock); 2834 break; 2835 } 2836 case CTL_ERROR_INJECT_DELETE: { 2837 struct ctl_error_desc *delete_desc, *desc, *desc2; 2838 struct ctl_lun *lun; 2839 int delete_done; 2840 2841 delete_desc = (struct ctl_error_desc *)addr; 2842 delete_done = 0; 2843 2844 mtx_lock(&softc->ctl_lock); 2845 lun = softc->ctl_luns[delete_desc->lun_id]; 2846 if (lun == NULL) { 2847 mtx_unlock(&softc->ctl_lock); 2848 printf("%s: CTL_ERROR_INJECT_DELETE: invalid LUN %ju\n", 2849 __func__, (uintmax_t)delete_desc->lun_id); 2850 retval = EINVAL; 2851 break; 2852 } 2853 mtx_lock(&lun->lun_lock); 2854 mtx_unlock(&softc->ctl_lock); 2855 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 2856 if (desc->serial != delete_desc->serial) 2857 continue; 2858 2859 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, 2860 links); 2861 free(desc, M_CTL); 2862 delete_done = 1; 2863 } 2864 mtx_unlock(&lun->lun_lock); 2865 if (delete_done == 0) { 2866 printf("%s: CTL_ERROR_INJECT_DELETE: can't find " 2867 "error serial %ju on LUN %u\n", __func__, 2868 delete_desc->serial, delete_desc->lun_id); 2869 retval = EINVAL; 2870 break; 2871 } 2872 break; 2873 } 2874 case CTL_DUMP_STRUCTS: { 2875 int i, j, k; 2876 struct ctl_port *port; 2877 struct ctl_frontend *fe; 2878 2879 printf("CTL IID to WWPN map start:\n"); 2880 for (i = 0; i < CTL_MAX_PORTS; i++) { 2881 for (j = 0; j < CTL_MAX_INIT_PER_PORT; j++) { 2882 if (softc->wwpn_iid[i][j].in_use == 0) 2883 continue; 2884 2885 printf("port %d iid %u WWPN %#jx\n", 2886 softc->wwpn_iid[i][j].port, 2887 softc->wwpn_iid[i][j].iid, 2888 (uintmax_t)softc->wwpn_iid[i][j].wwpn); 2889 } 2890 } 2891 printf("CTL IID to WWPN map end\n"); 2892 printf("CTL Persistent Reservation information start:\n"); 2893 for (i = 0; i < CTL_MAX_LUNS; i++) { 2894 struct ctl_lun *lun; 2895 2896 lun = softc->ctl_luns[i]; 2897 2898 if ((lun == NULL) 2899 || ((lun->flags & CTL_LUN_DISABLED) != 0)) 2900 continue; 2901 2902 for (j = 0; j < (CTL_MAX_PORTS * 2); j++) { 2903 for (k = 0; k < CTL_MAX_INIT_PER_PORT; k++){ 2904 if (lun->per_res[j+k].registered == 0) 2905 continue; 2906 printf("LUN %d port %d iid %d key " 2907 "%#jx\n", i, j, k, 2908 (uintmax_t)scsi_8btou64( 2909 lun->per_res[j+k].res_key.key)); 2910 } 2911 } 2912 } 2913 printf("CTL Persistent Reservation information end\n"); 2914 printf("CTL Ports:\n"); 2915 /* 2916 * XXX KDM calling this without a lock. We'd likely want 2917 * to drop the lock before calling the frontend's dump 2918 * routine anyway. 2919 */ 2920 STAILQ_FOREACH(port, &softc->port_list, links) { 2921 printf("Port %s Frontend %s Type %u pport %d vport %d WWNN " 2922 "%#jx WWPN %#jx\n", port->port_name, 2923 port->frontend->name, port->port_type, 2924 port->physical_port, port->virtual_port, 2925 (uintmax_t)port->wwnn, (uintmax_t)port->wwpn); 2926 } 2927 printf("CTL Port information end\n"); 2928 printf("CTL Frontends:\n"); 2929 STAILQ_FOREACH(fe, &softc->fe_list, links) { 2930 printf("Frontend %s\n", fe->name); 2931 if (fe->fe_dump != NULL) 2932 fe->fe_dump(); 2933 } 2934 printf("CTL Frontend information end\n"); 2935 break; 2936 } 2937 case CTL_LUN_REQ: { 2938 struct ctl_lun_req *lun_req; 2939 struct ctl_backend_driver *backend; 2940 2941 lun_req = (struct ctl_lun_req *)addr; 2942 2943 backend = ctl_backend_find(lun_req->backend); 2944 if (backend == NULL) { 2945 lun_req->status = CTL_LUN_ERROR; 2946 snprintf(lun_req->error_str, 2947 sizeof(lun_req->error_str), 2948 "Backend \"%s\" not found.", 2949 lun_req->backend); 2950 break; 2951 } 2952 if (lun_req->num_be_args > 0) { 2953 lun_req->kern_be_args = ctl_copyin_args( 2954 lun_req->num_be_args, 2955 lun_req->be_args, 2956 lun_req->error_str, 2957 sizeof(lun_req->error_str)); 2958 if (lun_req->kern_be_args == NULL) { 2959 lun_req->status = CTL_LUN_ERROR; 2960 break; 2961 } 2962 } 2963 2964 retval = backend->ioctl(dev, cmd, addr, flag, td); 2965 2966 if (lun_req->num_be_args > 0) { 2967 ctl_copyout_args(lun_req->num_be_args, 2968 lun_req->kern_be_args); 2969 ctl_free_args(lun_req->num_be_args, 2970 lun_req->kern_be_args); 2971 } 2972 break; 2973 } 2974 case CTL_LUN_LIST: { 2975 struct sbuf *sb; 2976 struct ctl_lun *lun; 2977 struct ctl_lun_list *list; 2978 struct ctl_option *opt; 2979 2980 list = (struct ctl_lun_list *)addr; 2981 2982 /* 2983 * Allocate a fixed length sbuf here, based on the length 2984 * of the user's buffer. We could allocate an auto-extending 2985 * buffer, and then tell the user how much larger our 2986 * amount of data is than his buffer, but that presents 2987 * some problems: 2988 * 2989 * 1. The sbuf(9) routines use a blocking malloc, and so 2990 * we can't hold a lock while calling them with an 2991 * auto-extending buffer. 2992 * 2993 * 2. There is not currently a LUN reference counting 2994 * mechanism, outside of outstanding transactions on 2995 * the LUN's OOA queue. So a LUN could go away on us 2996 * while we're getting the LUN number, backend-specific 2997 * information, etc. Thus, given the way things 2998 * currently work, we need to hold the CTL lock while 2999 * grabbing LUN information. 3000 * 3001 * So, from the user's standpoint, the best thing to do is 3002 * allocate what he thinks is a reasonable buffer length, 3003 * and then if he gets a CTL_LUN_LIST_NEED_MORE_SPACE error, 3004 * double the buffer length and try again. (And repeat 3005 * that until he succeeds.) 3006 */ 3007 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3008 if (sb == NULL) { 3009 list->status = CTL_LUN_LIST_ERROR; 3010 snprintf(list->error_str, sizeof(list->error_str), 3011 "Unable to allocate %d bytes for LUN list", 3012 list->alloc_len); 3013 break; 3014 } 3015 3016 sbuf_printf(sb, "<ctllunlist>\n"); 3017 3018 mtx_lock(&softc->ctl_lock); 3019 STAILQ_FOREACH(lun, &softc->lun_list, links) { 3020 mtx_lock(&lun->lun_lock); 3021 retval = sbuf_printf(sb, "<lun id=\"%ju\">\n", 3022 (uintmax_t)lun->lun); 3023 3024 /* 3025 * Bail out as soon as we see that we've overfilled 3026 * the buffer. 3027 */ 3028 if (retval != 0) 3029 break; 3030 3031 retval = sbuf_printf(sb, "\t<backend_type>%s" 3032 "</backend_type>\n", 3033 (lun->backend == NULL) ? "none" : 3034 lun->backend->name); 3035 3036 if (retval != 0) 3037 break; 3038 3039 retval = sbuf_printf(sb, "\t<lun_type>%d</lun_type>\n", 3040 lun->be_lun->lun_type); 3041 3042 if (retval != 0) 3043 break; 3044 3045 if (lun->backend == NULL) { 3046 retval = sbuf_printf(sb, "</lun>\n"); 3047 if (retval != 0) 3048 break; 3049 continue; 3050 } 3051 3052 retval = sbuf_printf(sb, "\t<size>%ju</size>\n", 3053 (lun->be_lun->maxlba > 0) ? 3054 lun->be_lun->maxlba + 1 : 0); 3055 3056 if (retval != 0) 3057 break; 3058 3059 retval = sbuf_printf(sb, "\t<blocksize>%u</blocksize>\n", 3060 lun->be_lun->blocksize); 3061 3062 if (retval != 0) 3063 break; 3064 3065 retval = sbuf_printf(sb, "\t<serial_number>"); 3066 3067 if (retval != 0) 3068 break; 3069 3070 retval = ctl_sbuf_printf_esc(sb, 3071 lun->be_lun->serial_num); 3072 3073 if (retval != 0) 3074 break; 3075 3076 retval = sbuf_printf(sb, "</serial_number>\n"); 3077 3078 if (retval != 0) 3079 break; 3080 3081 retval = sbuf_printf(sb, "\t<device_id>"); 3082 3083 if (retval != 0) 3084 break; 3085 3086 retval = ctl_sbuf_printf_esc(sb,lun->be_lun->device_id); 3087 3088 if (retval != 0) 3089 break; 3090 3091 retval = sbuf_printf(sb, "</device_id>\n"); 3092 3093 if (retval != 0) 3094 break; 3095 3096 if (lun->backend->lun_info != NULL) { 3097 retval = lun->backend->lun_info(lun->be_lun->be_lun, sb); 3098 if (retval != 0) 3099 break; 3100 } 3101 STAILQ_FOREACH(opt, &lun->be_lun->options, links) { 3102 retval = sbuf_printf(sb, "\t<%s>%s</%s>\n", 3103 opt->name, opt->value, opt->name); 3104 if (retval != 0) 3105 break; 3106 } 3107 3108 retval = sbuf_printf(sb, "</lun>\n"); 3109 3110 if (retval != 0) 3111 break; 3112 mtx_unlock(&lun->lun_lock); 3113 } 3114 if (lun != NULL) 3115 mtx_unlock(&lun->lun_lock); 3116 mtx_unlock(&softc->ctl_lock); 3117 3118 if ((retval != 0) 3119 || ((retval = sbuf_printf(sb, "</ctllunlist>\n")) != 0)) { 3120 retval = 0; 3121 sbuf_delete(sb); 3122 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3123 snprintf(list->error_str, sizeof(list->error_str), 3124 "Out of space, %d bytes is too small", 3125 list->alloc_len); 3126 break; 3127 } 3128 3129 sbuf_finish(sb); 3130 3131 retval = copyout(sbuf_data(sb), list->lun_xml, 3132 sbuf_len(sb) + 1); 3133 3134 list->fill_len = sbuf_len(sb) + 1; 3135 list->status = CTL_LUN_LIST_OK; 3136 sbuf_delete(sb); 3137 break; 3138 } 3139 case CTL_ISCSI: { 3140 struct ctl_iscsi *ci; 3141 struct ctl_frontend *fe; 3142 3143 ci = (struct ctl_iscsi *)addr; 3144 3145 fe = ctl_frontend_find("iscsi"); 3146 if (fe == NULL) { 3147 ci->status = CTL_ISCSI_ERROR; 3148 snprintf(ci->error_str, sizeof(ci->error_str), 3149 "Frontend \"iscsi\" not found."); 3150 break; 3151 } 3152 3153 retval = fe->ioctl(dev, cmd, addr, flag, td); 3154 break; 3155 } 3156 case CTL_PORT_REQ: { 3157 struct ctl_req *req; 3158 struct ctl_frontend *fe; 3159 3160 req = (struct ctl_req *)addr; 3161 3162 fe = ctl_frontend_find(req->driver); 3163 if (fe == NULL) { 3164 req->status = CTL_LUN_ERROR; 3165 snprintf(req->error_str, sizeof(req->error_str), 3166 "Frontend \"%s\" not found.", req->driver); 3167 break; 3168 } 3169 if (req->num_args > 0) { 3170 req->kern_args = ctl_copyin_args(req->num_args, 3171 req->args, req->error_str, sizeof(req->error_str)); 3172 if (req->kern_args == NULL) { 3173 req->status = CTL_LUN_ERROR; 3174 break; 3175 } 3176 } 3177 3178 retval = fe->ioctl(dev, cmd, addr, flag, td); 3179 3180 if (req->num_args > 0) { 3181 ctl_copyout_args(req->num_args, req->kern_args); 3182 ctl_free_args(req->num_args, req->kern_args); 3183 } 3184 break; 3185 } 3186 case CTL_PORT_LIST: { 3187 struct sbuf *sb; 3188 struct ctl_port *port; 3189 struct ctl_lun_list *list; 3190 struct ctl_option *opt; 3191 3192 list = (struct ctl_lun_list *)addr; 3193 3194 sb = sbuf_new(NULL, NULL, list->alloc_len, SBUF_FIXEDLEN); 3195 if (sb == NULL) { 3196 list->status = CTL_LUN_LIST_ERROR; 3197 snprintf(list->error_str, sizeof(list->error_str), 3198 "Unable to allocate %d bytes for LUN list", 3199 list->alloc_len); 3200 break; 3201 } 3202 3203 sbuf_printf(sb, "<ctlportlist>\n"); 3204 3205 mtx_lock(&softc->ctl_lock); 3206 STAILQ_FOREACH(port, &softc->port_list, links) { 3207 retval = sbuf_printf(sb, "<targ_port id=\"%ju\">\n", 3208 (uintmax_t)port->targ_port); 3209 3210 /* 3211 * Bail out as soon as we see that we've overfilled 3212 * the buffer. 3213 */ 3214 if (retval != 0) 3215 break; 3216 3217 retval = sbuf_printf(sb, "\t<frontend_type>%s" 3218 "</frontend_type>\n", port->frontend->name); 3219 if (retval != 0) 3220 break; 3221 3222 retval = sbuf_printf(sb, "\t<port_type>%d</port_type>\n", 3223 port->port_type); 3224 if (retval != 0) 3225 break; 3226 3227 retval = sbuf_printf(sb, "\t<online>%s</online>\n", 3228 (port->status & CTL_PORT_STATUS_ONLINE) ? "YES" : "NO"); 3229 if (retval != 0) 3230 break; 3231 3232 retval = sbuf_printf(sb, "\t<port_name>%s</port_name>\n", 3233 port->port_name); 3234 if (retval != 0) 3235 break; 3236 3237 retval = sbuf_printf(sb, "\t<physical_port>%d</physical_port>\n", 3238 port->physical_port); 3239 if (retval != 0) 3240 break; 3241 3242 retval = sbuf_printf(sb, "\t<virtual_port>%d</virtual_port>\n", 3243 port->virtual_port); 3244 if (retval != 0) 3245 break; 3246 3247 retval = sbuf_printf(sb, "\t<wwnn>%#jx</wwnn>\n", 3248 (uintmax_t)port->wwnn); 3249 if (retval != 0) 3250 break; 3251 3252 retval = sbuf_printf(sb, "\t<wwpn>%#jx</wwpn>\n", 3253 (uintmax_t)port->wwpn); 3254 if (retval != 0) 3255 break; 3256 3257 if (port->port_info != NULL) { 3258 retval = port->port_info(port->onoff_arg, sb); 3259 if (retval != 0) 3260 break; 3261 } 3262 STAILQ_FOREACH(opt, &port->options, links) { 3263 retval = sbuf_printf(sb, "\t<%s>%s</%s>\n", 3264 opt->name, opt->value, opt->name); 3265 if (retval != 0) 3266 break; 3267 } 3268 3269 retval = sbuf_printf(sb, "</targ_port>\n"); 3270 if (retval != 0) 3271 break; 3272 } 3273 mtx_unlock(&softc->ctl_lock); 3274 3275 if ((retval != 0) 3276 || ((retval = sbuf_printf(sb, "</ctlportlist>\n")) != 0)) { 3277 retval = 0; 3278 sbuf_delete(sb); 3279 list->status = CTL_LUN_LIST_NEED_MORE_SPACE; 3280 snprintf(list->error_str, sizeof(list->error_str), 3281 "Out of space, %d bytes is too small", 3282 list->alloc_len); 3283 break; 3284 } 3285 3286 sbuf_finish(sb); 3287 3288 retval = copyout(sbuf_data(sb), list->lun_xml, 3289 sbuf_len(sb) + 1); 3290 3291 list->fill_len = sbuf_len(sb) + 1; 3292 list->status = CTL_LUN_LIST_OK; 3293 sbuf_delete(sb); 3294 break; 3295 } 3296 default: { 3297 /* XXX KDM should we fix this? */ 3298#if 0 3299 struct ctl_backend_driver *backend; 3300 unsigned int type; 3301 int found; 3302 3303 found = 0; 3304 3305 /* 3306 * We encode the backend type as the ioctl type for backend 3307 * ioctls. So parse it out here, and then search for a 3308 * backend of this type. 3309 */ 3310 type = _IOC_TYPE(cmd); 3311 3312 STAILQ_FOREACH(backend, &softc->be_list, links) { 3313 if (backend->type == type) { 3314 found = 1; 3315 break; 3316 } 3317 } 3318 if (found == 0) { 3319 printf("ctl: unknown ioctl command %#lx or backend " 3320 "%d\n", cmd, type); 3321 retval = EINVAL; 3322 break; 3323 } 3324 retval = backend->ioctl(dev, cmd, addr, flag, td); 3325#endif 3326 retval = ENOTTY; 3327 break; 3328 } 3329 } 3330 return (retval); 3331} 3332 3333uint32_t 3334ctl_get_initindex(struct ctl_nexus *nexus) 3335{ 3336 if (nexus->targ_port < CTL_MAX_PORTS) 3337 return (nexus->initid.id + 3338 (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3339 else 3340 return (nexus->initid.id + 3341 ((nexus->targ_port - CTL_MAX_PORTS) * 3342 CTL_MAX_INIT_PER_PORT)); 3343} 3344 3345uint32_t 3346ctl_get_resindex(struct ctl_nexus *nexus) 3347{ 3348 return (nexus->initid.id + (nexus->targ_port * CTL_MAX_INIT_PER_PORT)); 3349} 3350 3351uint32_t 3352ctl_port_idx(int port_num) 3353{ 3354 if (port_num < CTL_MAX_PORTS) 3355 return(port_num); 3356 else 3357 return(port_num - CTL_MAX_PORTS); 3358} 3359 3360static uint32_t 3361ctl_map_lun(int port_num, uint32_t lun_id) 3362{ 3363 struct ctl_port *port; 3364 3365 port = control_softc->ctl_ports[ctl_port_idx(port_num)]; 3366 if (port == NULL) 3367 return (UINT32_MAX); 3368 if (port->lun_map == NULL) 3369 return (lun_id); 3370 return (port->lun_map(port->targ_lun_arg, lun_id)); 3371} 3372 3373static uint32_t 3374ctl_map_lun_back(int port_num, uint32_t lun_id) 3375{ 3376 struct ctl_port *port; 3377 uint32_t i; 3378 3379 port = control_softc->ctl_ports[ctl_port_idx(port_num)]; 3380 if (port->lun_map == NULL) 3381 return (lun_id); 3382 for (i = 0; i < CTL_MAX_LUNS; i++) { 3383 if (port->lun_map(port->targ_lun_arg, i) == lun_id) 3384 return (i); 3385 } 3386 return (UINT32_MAX); 3387} 3388 3389/* 3390 * Note: This only works for bitmask sizes that are at least 32 bits, and 3391 * that are a power of 2. 3392 */ 3393int 3394ctl_ffz(uint32_t *mask, uint32_t size) 3395{ 3396 uint32_t num_chunks, num_pieces; 3397 int i, j; 3398 3399 num_chunks = (size >> 5); 3400 if (num_chunks == 0) 3401 num_chunks++; 3402 num_pieces = ctl_min((sizeof(uint32_t) * 8), size); 3403 3404 for (i = 0; i < num_chunks; i++) { 3405 for (j = 0; j < num_pieces; j++) { 3406 if ((mask[i] & (1 << j)) == 0) 3407 return ((i << 5) + j); 3408 } 3409 } 3410 3411 return (-1); 3412} 3413 3414int 3415ctl_set_mask(uint32_t *mask, uint32_t bit) 3416{ 3417 uint32_t chunk, piece; 3418 3419 chunk = bit >> 5; 3420 piece = bit % (sizeof(uint32_t) * 8); 3421 3422 if ((mask[chunk] & (1 << piece)) != 0) 3423 return (-1); 3424 else 3425 mask[chunk] |= (1 << piece); 3426 3427 return (0); 3428} 3429 3430int 3431ctl_clear_mask(uint32_t *mask, uint32_t bit) 3432{ 3433 uint32_t chunk, piece; 3434 3435 chunk = bit >> 5; 3436 piece = bit % (sizeof(uint32_t) * 8); 3437 3438 if ((mask[chunk] & (1 << piece)) == 0) 3439 return (-1); 3440 else 3441 mask[chunk] &= ~(1 << piece); 3442 3443 return (0); 3444} 3445 3446int 3447ctl_is_set(uint32_t *mask, uint32_t bit) 3448{ 3449 uint32_t chunk, piece; 3450 3451 chunk = bit >> 5; 3452 piece = bit % (sizeof(uint32_t) * 8); 3453 3454 if ((mask[chunk] & (1 << piece)) == 0) 3455 return (0); 3456 else 3457 return (1); 3458} 3459 3460#ifdef unused 3461/* 3462 * The bus, target and lun are optional, they can be filled in later. 3463 * can_wait is used to determine whether we can wait on the malloc or not. 3464 */ 3465union ctl_io* 3466ctl_malloc_io(ctl_io_type io_type, uint32_t targ_port, uint32_t targ_target, 3467 uint32_t targ_lun, int can_wait) 3468{ 3469 union ctl_io *io; 3470 3471 if (can_wait) 3472 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_WAITOK); 3473 else 3474 io = (union ctl_io *)malloc(sizeof(*io), M_CTL, M_NOWAIT); 3475 3476 if (io != NULL) { 3477 io->io_hdr.io_type = io_type; 3478 io->io_hdr.targ_port = targ_port; 3479 /* 3480 * XXX KDM this needs to change/go away. We need to move 3481 * to a preallocated pool of ctl_scsiio structures. 3482 */ 3483 io->io_hdr.nexus.targ_target.id = targ_target; 3484 io->io_hdr.nexus.targ_lun = targ_lun; 3485 } 3486 3487 return (io); 3488} 3489 3490void 3491ctl_kfree_io(union ctl_io *io) 3492{ 3493 free(io, M_CTL); 3494} 3495#endif /* unused */ 3496 3497/* 3498 * ctl_softc, pool_type, total_ctl_io are passed in. 3499 * npool is passed out. 3500 */ 3501int 3502ctl_pool_create(struct ctl_softc *ctl_softc, ctl_pool_type pool_type, 3503 uint32_t total_ctl_io, struct ctl_io_pool **npool) 3504{ 3505 uint32_t i; 3506 union ctl_io *cur_io, *next_io; 3507 struct ctl_io_pool *pool; 3508 int retval; 3509 3510 retval = 0; 3511 3512 pool = (struct ctl_io_pool *)malloc(sizeof(*pool), M_CTL, 3513 M_NOWAIT | M_ZERO); 3514 if (pool == NULL) { 3515 retval = ENOMEM; 3516 goto bailout; 3517 } 3518 3519 pool->type = pool_type; 3520 pool->ctl_softc = ctl_softc; 3521 3522 mtx_lock(&ctl_softc->pool_lock); 3523 pool->id = ctl_softc->cur_pool_id++; 3524 mtx_unlock(&ctl_softc->pool_lock); 3525 3526 pool->flags = CTL_POOL_FLAG_NONE; 3527 pool->refcount = 1; /* Reference for validity. */ 3528 STAILQ_INIT(&pool->free_queue); 3529 3530 /* 3531 * XXX KDM other options here: 3532 * - allocate a page at a time 3533 * - allocate one big chunk of memory. 3534 * Page allocation might work well, but would take a little more 3535 * tracking. 3536 */ 3537 for (i = 0; i < total_ctl_io; i++) { 3538 cur_io = (union ctl_io *)malloc(sizeof(*cur_io), M_CTLIO, 3539 M_NOWAIT); 3540 if (cur_io == NULL) { 3541 retval = ENOMEM; 3542 break; 3543 } 3544 cur_io->io_hdr.pool = pool; 3545 STAILQ_INSERT_TAIL(&pool->free_queue, &cur_io->io_hdr, links); 3546 pool->total_ctl_io++; 3547 pool->free_ctl_io++; 3548 } 3549 3550 if (retval != 0) { 3551 for (cur_io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3552 cur_io != NULL; cur_io = next_io) { 3553 next_io = (union ctl_io *)STAILQ_NEXT(&cur_io->io_hdr, 3554 links); 3555 STAILQ_REMOVE(&pool->free_queue, &cur_io->io_hdr, 3556 ctl_io_hdr, links); 3557 free(cur_io, M_CTLIO); 3558 } 3559 3560 free(pool, M_CTL); 3561 goto bailout; 3562 } 3563 mtx_lock(&ctl_softc->pool_lock); 3564 ctl_softc->num_pools++; 3565 STAILQ_INSERT_TAIL(&ctl_softc->io_pools, pool, links); 3566 /* 3567 * Increment our usage count if this is an external consumer, so we 3568 * can't get unloaded until the external consumer (most likely a 3569 * FETD) unloads and frees his pool. 3570 * 3571 * XXX KDM will this increment the caller's module use count, or 3572 * mine? 3573 */ 3574#if 0 3575 if ((pool_type != CTL_POOL_EMERGENCY) 3576 && (pool_type != CTL_POOL_INTERNAL) 3577 && (pool_type != CTL_POOL_4OTHERSC)) 3578 MOD_INC_USE_COUNT; 3579#endif 3580 3581 mtx_unlock(&ctl_softc->pool_lock); 3582 3583 *npool = pool; 3584 3585bailout: 3586 3587 return (retval); 3588} 3589 3590static int 3591ctl_pool_acquire(struct ctl_io_pool *pool) 3592{ 3593 3594 mtx_assert(&pool->ctl_softc->pool_lock, MA_OWNED); 3595 3596 if (pool->flags & CTL_POOL_FLAG_INVALID) 3597 return (EINVAL); 3598 3599 pool->refcount++; 3600 3601 return (0); 3602} 3603 3604static void 3605ctl_pool_release(struct ctl_io_pool *pool) 3606{ 3607 struct ctl_softc *ctl_softc = pool->ctl_softc; 3608 union ctl_io *io; 3609 3610 mtx_assert(&ctl_softc->pool_lock, MA_OWNED); 3611 3612 if (--pool->refcount != 0) 3613 return; 3614 3615 while ((io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue)) != NULL) { 3616 STAILQ_REMOVE(&pool->free_queue, &io->io_hdr, ctl_io_hdr, 3617 links); 3618 free(io, M_CTLIO); 3619 } 3620 3621 STAILQ_REMOVE(&ctl_softc->io_pools, pool, ctl_io_pool, links); 3622 ctl_softc->num_pools--; 3623 3624 /* 3625 * XXX KDM will this decrement the caller's usage count or mine? 3626 */ 3627#if 0 3628 if ((pool->type != CTL_POOL_EMERGENCY) 3629 && (pool->type != CTL_POOL_INTERNAL) 3630 && (pool->type != CTL_POOL_4OTHERSC)) 3631 MOD_DEC_USE_COUNT; 3632#endif 3633 3634 free(pool, M_CTL); 3635} 3636 3637void 3638ctl_pool_free(struct ctl_io_pool *pool) 3639{ 3640 struct ctl_softc *ctl_softc; 3641 3642 if (pool == NULL) 3643 return; 3644 3645 ctl_softc = pool->ctl_softc; 3646 mtx_lock(&ctl_softc->pool_lock); 3647 pool->flags |= CTL_POOL_FLAG_INVALID; 3648 ctl_pool_release(pool); 3649 mtx_unlock(&ctl_softc->pool_lock); 3650} 3651 3652/* 3653 * This routine does not block (except for spinlocks of course). 3654 * It tries to allocate a ctl_io union from the caller's pool as quickly as 3655 * possible. 3656 */ 3657union ctl_io * 3658ctl_alloc_io(void *pool_ref) 3659{ 3660 union ctl_io *io; 3661 struct ctl_softc *ctl_softc; 3662 struct ctl_io_pool *pool, *npool; 3663 struct ctl_io_pool *emergency_pool; 3664 3665 pool = (struct ctl_io_pool *)pool_ref; 3666 3667 if (pool == NULL) { 3668 printf("%s: pool is NULL\n", __func__); 3669 return (NULL); 3670 } 3671 3672 emergency_pool = NULL; 3673 3674 ctl_softc = pool->ctl_softc; 3675 3676 mtx_lock(&ctl_softc->pool_lock); 3677 /* 3678 * First, try to get the io structure from the user's pool. 3679 */ 3680 if (ctl_pool_acquire(pool) == 0) { 3681 io = (union ctl_io *)STAILQ_FIRST(&pool->free_queue); 3682 if (io != NULL) { 3683 STAILQ_REMOVE_HEAD(&pool->free_queue, links); 3684 pool->total_allocated++; 3685 pool->free_ctl_io--; 3686 mtx_unlock(&ctl_softc->pool_lock); 3687 return (io); 3688 } else 3689 ctl_pool_release(pool); 3690 } 3691 /* 3692 * If he doesn't have any io structures left, search for an 3693 * emergency pool and grab one from there. 3694 */ 3695 STAILQ_FOREACH(npool, &ctl_softc->io_pools, links) { 3696 if (npool->type != CTL_POOL_EMERGENCY) 3697 continue; 3698 3699 if (ctl_pool_acquire(npool) != 0) 3700 continue; 3701 3702 emergency_pool = npool; 3703 3704 io = (union ctl_io *)STAILQ_FIRST(&npool->free_queue); 3705 if (io != NULL) { 3706 STAILQ_REMOVE_HEAD(&npool->free_queue, links); 3707 npool->total_allocated++; 3708 npool->free_ctl_io--; 3709 mtx_unlock(&ctl_softc->pool_lock); 3710 return (io); 3711 } else 3712 ctl_pool_release(npool); 3713 } 3714 3715 /* Drop the spinlock before we malloc */ 3716 mtx_unlock(&ctl_softc->pool_lock); 3717 3718 /* 3719 * The emergency pool (if it exists) didn't have one, so try an 3720 * atomic (i.e. nonblocking) malloc and see if we get lucky. 3721 */ 3722 io = (union ctl_io *)malloc(sizeof(*io), M_CTLIO, M_NOWAIT); 3723 if (io != NULL) { 3724 /* 3725 * If the emergency pool exists but is empty, add this 3726 * ctl_io to its list when it gets freed. 3727 */ 3728 if (emergency_pool != NULL) { 3729 mtx_lock(&ctl_softc->pool_lock); 3730 if (ctl_pool_acquire(emergency_pool) == 0) { 3731 io->io_hdr.pool = emergency_pool; 3732 emergency_pool->total_ctl_io++; 3733 /* 3734 * Need to bump this, otherwise 3735 * total_allocated and total_freed won't 3736 * match when we no longer have anything 3737 * outstanding. 3738 */ 3739 emergency_pool->total_allocated++; 3740 } 3741 mtx_unlock(&ctl_softc->pool_lock); 3742 } else 3743 io->io_hdr.pool = NULL; 3744 } 3745 3746 return (io); 3747} 3748 3749void 3750ctl_free_io(union ctl_io *io) 3751{ 3752 if (io == NULL) 3753 return; 3754 3755 /* 3756 * If this ctl_io has a pool, return it to that pool. 3757 */ 3758 if (io->io_hdr.pool != NULL) { 3759 struct ctl_io_pool *pool; 3760 3761 pool = (struct ctl_io_pool *)io->io_hdr.pool; 3762 mtx_lock(&pool->ctl_softc->pool_lock); 3763 io->io_hdr.io_type = 0xff; 3764 STAILQ_INSERT_TAIL(&pool->free_queue, &io->io_hdr, links); 3765 pool->total_freed++; 3766 pool->free_ctl_io++; 3767 ctl_pool_release(pool); 3768 mtx_unlock(&pool->ctl_softc->pool_lock); 3769 } else { 3770 /* 3771 * Otherwise, just free it. We probably malloced it and 3772 * the emergency pool wasn't available. 3773 */ 3774 free(io, M_CTLIO); 3775 } 3776 3777} 3778 3779void 3780ctl_zero_io(union ctl_io *io) 3781{ 3782 void *pool_ref; 3783 3784 if (io == NULL) 3785 return; 3786 3787 /* 3788 * May need to preserve linked list pointers at some point too. 3789 */ 3790 pool_ref = io->io_hdr.pool; 3791 3792 memset(io, 0, sizeof(*io)); 3793 3794 io->io_hdr.pool = pool_ref; 3795} 3796 3797/* 3798 * This routine is currently used for internal copies of ctl_ios that need 3799 * to persist for some reason after we've already returned status to the 3800 * FETD. (Thus the flag set.) 3801 * 3802 * XXX XXX 3803 * Note that this makes a blind copy of all fields in the ctl_io, except 3804 * for the pool reference. This includes any memory that has been 3805 * allocated! That memory will no longer be valid after done has been 3806 * called, so this would be VERY DANGEROUS for command that actually does 3807 * any reads or writes. Right now (11/7/2005), this is only used for immediate 3808 * start and stop commands, which don't transfer any data, so this is not a 3809 * problem. If it is used for anything else, the caller would also need to 3810 * allocate data buffer space and this routine would need to be modified to 3811 * copy the data buffer(s) as well. 3812 */ 3813void 3814ctl_copy_io(union ctl_io *src, union ctl_io *dest) 3815{ 3816 void *pool_ref; 3817 3818 if ((src == NULL) 3819 || (dest == NULL)) 3820 return; 3821 3822 /* 3823 * May need to preserve linked list pointers at some point too. 3824 */ 3825 pool_ref = dest->io_hdr.pool; 3826 3827 memcpy(dest, src, ctl_min(sizeof(*src), sizeof(*dest))); 3828 3829 dest->io_hdr.pool = pool_ref; 3830 /* 3831 * We need to know that this is an internal copy, and doesn't need 3832 * to get passed back to the FETD that allocated it. 3833 */ 3834 dest->io_hdr.flags |= CTL_FLAG_INT_COPY; 3835} 3836 3837#ifdef NEEDTOPORT 3838static void 3839ctl_update_power_subpage(struct copan_power_subpage *page) 3840{ 3841 int num_luns, num_partitions, config_type; 3842 struct ctl_softc *softc; 3843 cs_BOOL_t aor_present, shelf_50pct_power; 3844 cs_raidset_personality_t rs_type; 3845 int max_active_luns; 3846 3847 softc = control_softc; 3848 3849 /* subtract out the processor LUN */ 3850 num_luns = softc->num_luns - 1; 3851 /* 3852 * Default to 7 LUNs active, which was the only number we allowed 3853 * in the past. 3854 */ 3855 max_active_luns = 7; 3856 3857 num_partitions = config_GetRsPartitionInfo(); 3858 config_type = config_GetConfigType(); 3859 shelf_50pct_power = config_GetShelfPowerMode(); 3860 aor_present = config_IsAorRsPresent(); 3861 3862 rs_type = ddb_GetRsRaidType(1); 3863 if ((rs_type != CS_RAIDSET_PERSONALITY_RAID5) 3864 && (rs_type != CS_RAIDSET_PERSONALITY_RAID1)) { 3865 EPRINT(0, "Unsupported RS type %d!", rs_type); 3866 } 3867 3868 3869 page->total_luns = num_luns; 3870 3871 switch (config_type) { 3872 case 40: 3873 /* 3874 * In a 40 drive configuration, it doesn't matter what DC 3875 * cards we have, whether we have AOR enabled or not, 3876 * partitioning or not, or what type of RAIDset we have. 3877 * In that scenario, we can power up every LUN we present 3878 * to the user. 3879 */ 3880 max_active_luns = num_luns; 3881 3882 break; 3883 case 64: 3884 if (shelf_50pct_power == CS_FALSE) { 3885 /* 25% power */ 3886 if (aor_present == CS_TRUE) { 3887 if (rs_type == 3888 CS_RAIDSET_PERSONALITY_RAID5) { 3889 max_active_luns = 7; 3890 } else if (rs_type == 3891 CS_RAIDSET_PERSONALITY_RAID1){ 3892 max_active_luns = 14; 3893 } else { 3894 /* XXX KDM now what?? */ 3895 } 3896 } else { 3897 if (rs_type == 3898 CS_RAIDSET_PERSONALITY_RAID5) { 3899 max_active_luns = 8; 3900 } else if (rs_type == 3901 CS_RAIDSET_PERSONALITY_RAID1){ 3902 max_active_luns = 16; 3903 } else { 3904 /* XXX KDM now what?? */ 3905 } 3906 } 3907 } else { 3908 /* 50% power */ 3909 /* 3910 * With 50% power in a 64 drive configuration, we 3911 * can power all LUNs we present. 3912 */ 3913 max_active_luns = num_luns; 3914 } 3915 break; 3916 case 112: 3917 if (shelf_50pct_power == CS_FALSE) { 3918 /* 25% power */ 3919 if (aor_present == CS_TRUE) { 3920 if (rs_type == 3921 CS_RAIDSET_PERSONALITY_RAID5) { 3922 max_active_luns = 7; 3923 } else if (rs_type == 3924 CS_RAIDSET_PERSONALITY_RAID1){ 3925 max_active_luns = 14; 3926 } else { 3927 /* XXX KDM now what?? */ 3928 } 3929 } else { 3930 if (rs_type == 3931 CS_RAIDSET_PERSONALITY_RAID5) { 3932 max_active_luns = 8; 3933 } else if (rs_type == 3934 CS_RAIDSET_PERSONALITY_RAID1){ 3935 max_active_luns = 16; 3936 } else { 3937 /* XXX KDM now what?? */ 3938 } 3939 } 3940 } else { 3941 /* 50% power */ 3942 if (aor_present == CS_TRUE) { 3943 if (rs_type == 3944 CS_RAIDSET_PERSONALITY_RAID5) { 3945 max_active_luns = 14; 3946 } else if (rs_type == 3947 CS_RAIDSET_PERSONALITY_RAID1){ 3948 /* 3949 * We're assuming here that disk 3950 * caching is enabled, and so we're 3951 * able to power up half of each 3952 * LUN, and cache all writes. 3953 */ 3954 max_active_luns = num_luns; 3955 } else { 3956 /* XXX KDM now what?? */ 3957 } 3958 } else { 3959 if (rs_type == 3960 CS_RAIDSET_PERSONALITY_RAID5) { 3961 max_active_luns = 15; 3962 } else if (rs_type == 3963 CS_RAIDSET_PERSONALITY_RAID1){ 3964 max_active_luns = 30; 3965 } else { 3966 /* XXX KDM now what?? */ 3967 } 3968 } 3969 } 3970 break; 3971 default: 3972 /* 3973 * In this case, we have an unknown configuration, so we 3974 * just use the default from above. 3975 */ 3976 break; 3977 } 3978 3979 page->max_active_luns = max_active_luns; 3980#if 0 3981 printk("%s: total_luns = %d, max_active_luns = %d\n", __func__, 3982 page->total_luns, page->max_active_luns); 3983#endif 3984} 3985#endif /* NEEDTOPORT */ 3986 3987/* 3988 * This routine could be used in the future to load default and/or saved 3989 * mode page parameters for a particuar lun. 3990 */ 3991static int 3992ctl_init_page_index(struct ctl_lun *lun) 3993{ 3994 int i; 3995 struct ctl_page_index *page_index; 3996 struct ctl_softc *softc; 3997 3998 memcpy(&lun->mode_pages.index, page_index_template, 3999 sizeof(page_index_template)); 4000 4001 softc = lun->ctl_softc; 4002 4003 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4004 4005 page_index = &lun->mode_pages.index[i]; 4006 /* 4007 * If this is a disk-only mode page, there's no point in 4008 * setting it up. For some pages, we have to have some 4009 * basic information about the disk in order to calculate the 4010 * mode page data. 4011 */ 4012 if ((lun->be_lun->lun_type != T_DIRECT) 4013 && (page_index->page_flags & CTL_PAGE_FLAG_DISK_ONLY)) 4014 continue; 4015 4016 switch (page_index->page_code & SMPH_PC_MASK) { 4017 case SMS_FORMAT_DEVICE_PAGE: { 4018 struct scsi_format_page *format_page; 4019 4020 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4021 panic("subpage is incorrect!"); 4022 4023 /* 4024 * Sectors per track are set above. Bytes per 4025 * sector need to be set here on a per-LUN basis. 4026 */ 4027 memcpy(&lun->mode_pages.format_page[CTL_PAGE_CURRENT], 4028 &format_page_default, 4029 sizeof(format_page_default)); 4030 memcpy(&lun->mode_pages.format_page[ 4031 CTL_PAGE_CHANGEABLE], &format_page_changeable, 4032 sizeof(format_page_changeable)); 4033 memcpy(&lun->mode_pages.format_page[CTL_PAGE_DEFAULT], 4034 &format_page_default, 4035 sizeof(format_page_default)); 4036 memcpy(&lun->mode_pages.format_page[CTL_PAGE_SAVED], 4037 &format_page_default, 4038 sizeof(format_page_default)); 4039 4040 format_page = &lun->mode_pages.format_page[ 4041 CTL_PAGE_CURRENT]; 4042 scsi_ulto2b(lun->be_lun->blocksize, 4043 format_page->bytes_per_sector); 4044 4045 format_page = &lun->mode_pages.format_page[ 4046 CTL_PAGE_DEFAULT]; 4047 scsi_ulto2b(lun->be_lun->blocksize, 4048 format_page->bytes_per_sector); 4049 4050 format_page = &lun->mode_pages.format_page[ 4051 CTL_PAGE_SAVED]; 4052 scsi_ulto2b(lun->be_lun->blocksize, 4053 format_page->bytes_per_sector); 4054 4055 page_index->page_data = 4056 (uint8_t *)lun->mode_pages.format_page; 4057 break; 4058 } 4059 case SMS_RIGID_DISK_PAGE: { 4060 struct scsi_rigid_disk_page *rigid_disk_page; 4061 uint32_t sectors_per_cylinder; 4062 uint64_t cylinders; 4063#ifndef __XSCALE__ 4064 int shift; 4065#endif /* !__XSCALE__ */ 4066 4067 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4068 panic("invalid subpage value %d", 4069 page_index->subpage); 4070 4071 /* 4072 * Rotation rate and sectors per track are set 4073 * above. We calculate the cylinders here based on 4074 * capacity. Due to the number of heads and 4075 * sectors per track we're using, smaller arrays 4076 * may turn out to have 0 cylinders. Linux and 4077 * FreeBSD don't pay attention to these mode pages 4078 * to figure out capacity, but Solaris does. It 4079 * seems to deal with 0 cylinders just fine, and 4080 * works out a fake geometry based on the capacity. 4081 */ 4082 memcpy(&lun->mode_pages.rigid_disk_page[ 4083 CTL_PAGE_CURRENT], &rigid_disk_page_default, 4084 sizeof(rigid_disk_page_default)); 4085 memcpy(&lun->mode_pages.rigid_disk_page[ 4086 CTL_PAGE_CHANGEABLE],&rigid_disk_page_changeable, 4087 sizeof(rigid_disk_page_changeable)); 4088 memcpy(&lun->mode_pages.rigid_disk_page[ 4089 CTL_PAGE_DEFAULT], &rigid_disk_page_default, 4090 sizeof(rigid_disk_page_default)); 4091 memcpy(&lun->mode_pages.rigid_disk_page[ 4092 CTL_PAGE_SAVED], &rigid_disk_page_default, 4093 sizeof(rigid_disk_page_default)); 4094 4095 sectors_per_cylinder = CTL_DEFAULT_SECTORS_PER_TRACK * 4096 CTL_DEFAULT_HEADS; 4097 4098 /* 4099 * The divide method here will be more accurate, 4100 * probably, but results in floating point being 4101 * used in the kernel on i386 (__udivdi3()). On the 4102 * XScale, though, __udivdi3() is implemented in 4103 * software. 4104 * 4105 * The shift method for cylinder calculation is 4106 * accurate if sectors_per_cylinder is a power of 4107 * 2. Otherwise it might be slightly off -- you 4108 * might have a bit of a truncation problem. 4109 */ 4110#ifdef __XSCALE__ 4111 cylinders = (lun->be_lun->maxlba + 1) / 4112 sectors_per_cylinder; 4113#else 4114 for (shift = 31; shift > 0; shift--) { 4115 if (sectors_per_cylinder & (1 << shift)) 4116 break; 4117 } 4118 cylinders = (lun->be_lun->maxlba + 1) >> shift; 4119#endif 4120 4121 /* 4122 * We've basically got 3 bytes, or 24 bits for the 4123 * cylinder size in the mode page. If we're over, 4124 * just round down to 2^24. 4125 */ 4126 if (cylinders > 0xffffff) 4127 cylinders = 0xffffff; 4128 4129 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4130 CTL_PAGE_CURRENT]; 4131 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4132 4133 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4134 CTL_PAGE_DEFAULT]; 4135 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4136 4137 rigid_disk_page = &lun->mode_pages.rigid_disk_page[ 4138 CTL_PAGE_SAVED]; 4139 scsi_ulto3b(cylinders, rigid_disk_page->cylinders); 4140 4141 page_index->page_data = 4142 (uint8_t *)lun->mode_pages.rigid_disk_page; 4143 break; 4144 } 4145 case SMS_CACHING_PAGE: { 4146 4147 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4148 panic("invalid subpage value %d", 4149 page_index->subpage); 4150 /* 4151 * Defaults should be okay here, no calculations 4152 * needed. 4153 */ 4154 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_CURRENT], 4155 &caching_page_default, 4156 sizeof(caching_page_default)); 4157 memcpy(&lun->mode_pages.caching_page[ 4158 CTL_PAGE_CHANGEABLE], &caching_page_changeable, 4159 sizeof(caching_page_changeable)); 4160 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_DEFAULT], 4161 &caching_page_default, 4162 sizeof(caching_page_default)); 4163 memcpy(&lun->mode_pages.caching_page[CTL_PAGE_SAVED], 4164 &caching_page_default, 4165 sizeof(caching_page_default)); 4166 page_index->page_data = 4167 (uint8_t *)lun->mode_pages.caching_page; 4168 break; 4169 } 4170 case SMS_CONTROL_MODE_PAGE: { 4171 4172 if (page_index->subpage != SMS_SUBPAGE_PAGE_0) 4173 panic("invalid subpage value %d", 4174 page_index->subpage); 4175 4176 /* 4177 * Defaults should be okay here, no calculations 4178 * needed. 4179 */ 4180 memcpy(&lun->mode_pages.control_page[CTL_PAGE_CURRENT], 4181 &control_page_default, 4182 sizeof(control_page_default)); 4183 memcpy(&lun->mode_pages.control_page[ 4184 CTL_PAGE_CHANGEABLE], &control_page_changeable, 4185 sizeof(control_page_changeable)); 4186 memcpy(&lun->mode_pages.control_page[CTL_PAGE_DEFAULT], 4187 &control_page_default, 4188 sizeof(control_page_default)); 4189 memcpy(&lun->mode_pages.control_page[CTL_PAGE_SAVED], 4190 &control_page_default, 4191 sizeof(control_page_default)); 4192 page_index->page_data = 4193 (uint8_t *)lun->mode_pages.control_page; 4194 break; 4195 4196 } 4197 case SMS_VENDOR_SPECIFIC_PAGE:{ 4198 switch (page_index->subpage) { 4199 case PWR_SUBPAGE_CODE: { 4200 struct copan_power_subpage *current_page, 4201 *saved_page; 4202 4203 memcpy(&lun->mode_pages.power_subpage[ 4204 CTL_PAGE_CURRENT], 4205 &power_page_default, 4206 sizeof(power_page_default)); 4207 memcpy(&lun->mode_pages.power_subpage[ 4208 CTL_PAGE_CHANGEABLE], 4209 &power_page_changeable, 4210 sizeof(power_page_changeable)); 4211 memcpy(&lun->mode_pages.power_subpage[ 4212 CTL_PAGE_DEFAULT], 4213 &power_page_default, 4214 sizeof(power_page_default)); 4215 memcpy(&lun->mode_pages.power_subpage[ 4216 CTL_PAGE_SAVED], 4217 &power_page_default, 4218 sizeof(power_page_default)); 4219 page_index->page_data = 4220 (uint8_t *)lun->mode_pages.power_subpage; 4221 4222 current_page = (struct copan_power_subpage *) 4223 (page_index->page_data + 4224 (page_index->page_len * 4225 CTL_PAGE_CURRENT)); 4226 saved_page = (struct copan_power_subpage *) 4227 (page_index->page_data + 4228 (page_index->page_len * 4229 CTL_PAGE_SAVED)); 4230 break; 4231 } 4232 case APS_SUBPAGE_CODE: { 4233 struct copan_aps_subpage *current_page, 4234 *saved_page; 4235 4236 // This gets set multiple times but 4237 // it should always be the same. It's 4238 // only done during init so who cares. 4239 index_to_aps_page = i; 4240 4241 memcpy(&lun->mode_pages.aps_subpage[ 4242 CTL_PAGE_CURRENT], 4243 &aps_page_default, 4244 sizeof(aps_page_default)); 4245 memcpy(&lun->mode_pages.aps_subpage[ 4246 CTL_PAGE_CHANGEABLE], 4247 &aps_page_changeable, 4248 sizeof(aps_page_changeable)); 4249 memcpy(&lun->mode_pages.aps_subpage[ 4250 CTL_PAGE_DEFAULT], 4251 &aps_page_default, 4252 sizeof(aps_page_default)); 4253 memcpy(&lun->mode_pages.aps_subpage[ 4254 CTL_PAGE_SAVED], 4255 &aps_page_default, 4256 sizeof(aps_page_default)); 4257 page_index->page_data = 4258 (uint8_t *)lun->mode_pages.aps_subpage; 4259 4260 current_page = (struct copan_aps_subpage *) 4261 (page_index->page_data + 4262 (page_index->page_len * 4263 CTL_PAGE_CURRENT)); 4264 saved_page = (struct copan_aps_subpage *) 4265 (page_index->page_data + 4266 (page_index->page_len * 4267 CTL_PAGE_SAVED)); 4268 break; 4269 } 4270 case DBGCNF_SUBPAGE_CODE: { 4271 struct copan_debugconf_subpage *current_page, 4272 *saved_page; 4273 4274 memcpy(&lun->mode_pages.debugconf_subpage[ 4275 CTL_PAGE_CURRENT], 4276 &debugconf_page_default, 4277 sizeof(debugconf_page_default)); 4278 memcpy(&lun->mode_pages.debugconf_subpage[ 4279 CTL_PAGE_CHANGEABLE], 4280 &debugconf_page_changeable, 4281 sizeof(debugconf_page_changeable)); 4282 memcpy(&lun->mode_pages.debugconf_subpage[ 4283 CTL_PAGE_DEFAULT], 4284 &debugconf_page_default, 4285 sizeof(debugconf_page_default)); 4286 memcpy(&lun->mode_pages.debugconf_subpage[ 4287 CTL_PAGE_SAVED], 4288 &debugconf_page_default, 4289 sizeof(debugconf_page_default)); 4290 page_index->page_data = 4291 (uint8_t *)lun->mode_pages.debugconf_subpage; 4292 4293 current_page = (struct copan_debugconf_subpage *) 4294 (page_index->page_data + 4295 (page_index->page_len * 4296 CTL_PAGE_CURRENT)); 4297 saved_page = (struct copan_debugconf_subpage *) 4298 (page_index->page_data + 4299 (page_index->page_len * 4300 CTL_PAGE_SAVED)); 4301 break; 4302 } 4303 default: 4304 panic("invalid subpage value %d", 4305 page_index->subpage); 4306 break; 4307 } 4308 break; 4309 } 4310 default: 4311 panic("invalid page value %d", 4312 page_index->page_code & SMPH_PC_MASK); 4313 break; 4314 } 4315 } 4316 4317 return (CTL_RETVAL_COMPLETE); 4318} 4319 4320/* 4321 * LUN allocation. 4322 * 4323 * Requirements: 4324 * - caller allocates and zeros LUN storage, or passes in a NULL LUN if he 4325 * wants us to allocate the LUN and he can block. 4326 * - ctl_softc is always set 4327 * - be_lun is set if the LUN has a backend (needed for disk LUNs) 4328 * 4329 * Returns 0 for success, non-zero (errno) for failure. 4330 */ 4331static int 4332ctl_alloc_lun(struct ctl_softc *ctl_softc, struct ctl_lun *ctl_lun, 4333 struct ctl_be_lun *const be_lun, struct ctl_id target_id) 4334{ 4335 struct ctl_lun *nlun, *lun; 4336 struct ctl_port *port; 4337 struct scsi_vpd_id_descriptor *desc; 4338 struct scsi_vpd_id_t10 *t10id; 4339 const char *scsiname, *vendor; 4340 int lun_number, i, lun_malloced; 4341 int devidlen, idlen1, idlen2 = 0, len; 4342 4343 if (be_lun == NULL) 4344 return (EINVAL); 4345 4346 /* 4347 * We currently only support Direct Access or Processor LUN types. 4348 */ 4349 switch (be_lun->lun_type) { 4350 case T_DIRECT: 4351 break; 4352 case T_PROCESSOR: 4353 break; 4354 case T_SEQUENTIAL: 4355 case T_CHANGER: 4356 default: 4357 be_lun->lun_config_status(be_lun->be_lun, 4358 CTL_LUN_CONFIG_FAILURE); 4359 break; 4360 } 4361 if (ctl_lun == NULL) { 4362 lun = malloc(sizeof(*lun), M_CTL, M_WAITOK); 4363 lun_malloced = 1; 4364 } else { 4365 lun_malloced = 0; 4366 lun = ctl_lun; 4367 } 4368 4369 memset(lun, 0, sizeof(*lun)); 4370 if (lun_malloced) 4371 lun->flags = CTL_LUN_MALLOCED; 4372 4373 /* Generate LUN ID. */ 4374 devidlen = max(CTL_DEVID_MIN_LEN, 4375 strnlen(be_lun->device_id, CTL_DEVID_LEN)); 4376 idlen1 = sizeof(*t10id) + devidlen; 4377 len = sizeof(struct scsi_vpd_id_descriptor) + idlen1; 4378 scsiname = ctl_get_opt(&be_lun->options, "scsiname"); 4379 if (scsiname != NULL) { 4380 idlen2 = roundup2(strlen(scsiname) + 1, 4); 4381 len += sizeof(struct scsi_vpd_id_descriptor) + idlen2; 4382 } 4383 lun->lun_devid = malloc(sizeof(struct ctl_devid) + len, 4384 M_CTL, M_WAITOK | M_ZERO); 4385 lun->lun_devid->len = len; 4386 desc = (struct scsi_vpd_id_descriptor *)lun->lun_devid->data; 4387 desc->proto_codeset = SVPD_ID_CODESET_ASCII; 4388 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 4389 desc->length = idlen1; 4390 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 4391 memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 4392 if ((vendor = ctl_get_opt(&be_lun->options, "vendor")) == NULL) { 4393 strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 4394 } else { 4395 strncpy(t10id->vendor, vendor, 4396 min(sizeof(t10id->vendor), strlen(vendor))); 4397 } 4398 strncpy((char *)t10id->vendor_spec_id, 4399 (char *)be_lun->device_id, devidlen); 4400 if (scsiname != NULL) { 4401 desc = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 4402 desc->length); 4403 desc->proto_codeset = SVPD_ID_CODESET_UTF8; 4404 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | 4405 SVPD_ID_TYPE_SCSI_NAME; 4406 desc->length = idlen2; 4407 strlcpy(desc->identifier, scsiname, idlen2); 4408 } 4409 4410 mtx_lock(&ctl_softc->ctl_lock); 4411 /* 4412 * See if the caller requested a particular LUN number. If so, see 4413 * if it is available. Otherwise, allocate the first available LUN. 4414 */ 4415 if (be_lun->flags & CTL_LUN_FLAG_ID_REQ) { 4416 if ((be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) 4417 || (ctl_is_set(ctl_softc->ctl_lun_mask, be_lun->req_lun_id))) { 4418 mtx_unlock(&ctl_softc->ctl_lock); 4419 if (be_lun->req_lun_id > (CTL_MAX_LUNS - 1)) { 4420 printf("ctl: requested LUN ID %d is higher " 4421 "than CTL_MAX_LUNS - 1 (%d)\n", 4422 be_lun->req_lun_id, CTL_MAX_LUNS - 1); 4423 } else { 4424 /* 4425 * XXX KDM return an error, or just assign 4426 * another LUN ID in this case?? 4427 */ 4428 printf("ctl: requested LUN ID %d is already " 4429 "in use\n", be_lun->req_lun_id); 4430 } 4431 if (lun->flags & CTL_LUN_MALLOCED) 4432 free(lun, M_CTL); 4433 be_lun->lun_config_status(be_lun->be_lun, 4434 CTL_LUN_CONFIG_FAILURE); 4435 return (ENOSPC); 4436 } 4437 lun_number = be_lun->req_lun_id; 4438 } else { 4439 lun_number = ctl_ffz(ctl_softc->ctl_lun_mask, CTL_MAX_LUNS); 4440 if (lun_number == -1) { 4441 mtx_unlock(&ctl_softc->ctl_lock); 4442 printf("ctl: can't allocate LUN on target %ju, out of " 4443 "LUNs\n", (uintmax_t)target_id.id); 4444 if (lun->flags & CTL_LUN_MALLOCED) 4445 free(lun, M_CTL); 4446 be_lun->lun_config_status(be_lun->be_lun, 4447 CTL_LUN_CONFIG_FAILURE); 4448 return (ENOSPC); 4449 } 4450 } 4451 ctl_set_mask(ctl_softc->ctl_lun_mask, lun_number); 4452 4453 mtx_init(&lun->lun_lock, "CTL LUN", NULL, MTX_DEF); 4454 lun->target = target_id; 4455 lun->lun = lun_number; 4456 lun->be_lun = be_lun; 4457 /* 4458 * The processor LUN is always enabled. Disk LUNs come on line 4459 * disabled, and must be enabled by the backend. 4460 */ 4461 lun->flags |= CTL_LUN_DISABLED; 4462 lun->backend = be_lun->be; 4463 be_lun->ctl_lun = lun; 4464 be_lun->lun_id = lun_number; 4465 atomic_add_int(&be_lun->be->num_luns, 1); 4466 if (be_lun->flags & CTL_LUN_FLAG_POWERED_OFF) 4467 lun->flags |= CTL_LUN_STOPPED; 4468 4469 if (be_lun->flags & CTL_LUN_FLAG_INOPERABLE) 4470 lun->flags |= CTL_LUN_INOPERABLE; 4471 4472 if (be_lun->flags & CTL_LUN_FLAG_PRIMARY) 4473 lun->flags |= CTL_LUN_PRIMARY_SC; 4474 4475 lun->ctl_softc = ctl_softc; 4476 TAILQ_INIT(&lun->ooa_queue); 4477 TAILQ_INIT(&lun->blocked_queue); 4478 STAILQ_INIT(&lun->error_list); 4479 4480 /* 4481 * Initialize the mode page index. 4482 */ 4483 ctl_init_page_index(lun); 4484 4485 /* 4486 * Set the poweron UA for all initiators on this LUN only. 4487 */ 4488 for (i = 0; i < CTL_MAX_INITIATORS; i++) 4489 lun->pending_sense[i].ua_pending = CTL_UA_POWERON; 4490 4491 /* 4492 * Now, before we insert this lun on the lun list, set the lun 4493 * inventory changed UA for all other luns. 4494 */ 4495 STAILQ_FOREACH(nlun, &ctl_softc->lun_list, links) { 4496 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4497 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4498 } 4499 } 4500 4501 STAILQ_INSERT_TAIL(&ctl_softc->lun_list, lun, links); 4502 4503 ctl_softc->ctl_luns[lun_number] = lun; 4504 4505 ctl_softc->num_luns++; 4506 4507 /* Setup statistics gathering */ 4508 lun->stats.device_type = be_lun->lun_type; 4509 lun->stats.lun_number = lun_number; 4510 if (lun->stats.device_type == T_DIRECT) 4511 lun->stats.blocksize = be_lun->blocksize; 4512 else 4513 lun->stats.flags = CTL_LUN_STATS_NO_BLOCKSIZE; 4514 for (i = 0;i < CTL_MAX_PORTS;i++) 4515 lun->stats.ports[i].targ_port = i; 4516 4517 mtx_unlock(&ctl_softc->ctl_lock); 4518 4519 lun->be_lun->lun_config_status(lun->be_lun->be_lun, CTL_LUN_CONFIG_OK); 4520 4521 /* 4522 * Run through each registered FETD and bring it online if it isn't 4523 * already. Enable the target ID if it hasn't been enabled, and 4524 * enable this particular LUN. 4525 */ 4526 STAILQ_FOREACH(port, &ctl_softc->port_list, links) { 4527 int retval; 4528 4529 retval = port->lun_enable(port->targ_lun_arg, target_id,lun_number); 4530 if (retval != 0) { 4531 printf("ctl_alloc_lun: FETD %s port %d returned error " 4532 "%d for lun_enable on target %ju lun %d\n", 4533 port->port_name, port->targ_port, retval, 4534 (uintmax_t)target_id.id, lun_number); 4535 } else 4536 port->status |= CTL_PORT_STATUS_LUN_ONLINE; 4537 } 4538 return (0); 4539} 4540 4541/* 4542 * Delete a LUN. 4543 * Assumptions: 4544 * - LUN has already been marked invalid and any pending I/O has been taken 4545 * care of. 4546 */ 4547static int 4548ctl_free_lun(struct ctl_lun *lun) 4549{ 4550 struct ctl_softc *softc; 4551#if 0 4552 struct ctl_port *port; 4553#endif 4554 struct ctl_lun *nlun; 4555 int i; 4556 4557 softc = lun->ctl_softc; 4558 4559 mtx_assert(&softc->ctl_lock, MA_OWNED); 4560 4561 STAILQ_REMOVE(&softc->lun_list, lun, ctl_lun, links); 4562 4563 ctl_clear_mask(softc->ctl_lun_mask, lun->lun); 4564 4565 softc->ctl_luns[lun->lun] = NULL; 4566 4567 if (!TAILQ_EMPTY(&lun->ooa_queue)) 4568 panic("Freeing a LUN %p with outstanding I/O!!\n", lun); 4569 4570 softc->num_luns--; 4571 4572 /* 4573 * XXX KDM this scheme only works for a single target/multiple LUN 4574 * setup. It needs to be revamped for a multiple target scheme. 4575 * 4576 * XXX KDM this results in port->lun_disable() getting called twice, 4577 * once when ctl_disable_lun() is called, and a second time here. 4578 * We really need to re-think the LUN disable semantics. There 4579 * should probably be several steps/levels to LUN removal: 4580 * - disable 4581 * - invalidate 4582 * - free 4583 * 4584 * Right now we only have a disable method when communicating to 4585 * the front end ports, at least for individual LUNs. 4586 */ 4587#if 0 4588 STAILQ_FOREACH(port, &softc->port_list, links) { 4589 int retval; 4590 4591 retval = port->lun_disable(port->targ_lun_arg, lun->target, 4592 lun->lun); 4593 if (retval != 0) { 4594 printf("ctl_free_lun: FETD %s port %d returned error " 4595 "%d for lun_disable on target %ju lun %jd\n", 4596 port->port_name, port->targ_port, retval, 4597 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4598 } 4599 4600 if (STAILQ_FIRST(&softc->lun_list) == NULL) { 4601 port->status &= ~CTL_PORT_STATUS_LUN_ONLINE; 4602 4603 retval = port->targ_disable(port->targ_lun_arg,lun->target); 4604 if (retval != 0) { 4605 printf("ctl_free_lun: FETD %s port %d " 4606 "returned error %d for targ_disable on " 4607 "target %ju\n", port->port_name, 4608 port->targ_port, retval, 4609 (uintmax_t)lun->target.id); 4610 } else 4611 port->status &= ~CTL_PORT_STATUS_TARG_ONLINE; 4612 4613 if ((port->status & CTL_PORT_STATUS_TARG_ONLINE) != 0) 4614 continue; 4615 4616#if 0 4617 port->port_offline(port->onoff_arg); 4618 port->status &= ~CTL_PORT_STATUS_ONLINE; 4619#endif 4620 } 4621 } 4622#endif 4623 4624 /* 4625 * Tell the backend to free resources, if this LUN has a backend. 4626 */ 4627 atomic_subtract_int(&lun->be_lun->be->num_luns, 1); 4628 lun->be_lun->lun_shutdown(lun->be_lun->be_lun); 4629 4630 mtx_destroy(&lun->lun_lock); 4631 free(lun->lun_devid, M_CTL); 4632 if (lun->flags & CTL_LUN_MALLOCED) 4633 free(lun, M_CTL); 4634 4635 STAILQ_FOREACH(nlun, &softc->lun_list, links) { 4636 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 4637 nlun->pending_sense[i].ua_pending |= CTL_UA_LUN_CHANGE; 4638 } 4639 } 4640 4641 return (0); 4642} 4643 4644static void 4645ctl_create_lun(struct ctl_be_lun *be_lun) 4646{ 4647 struct ctl_softc *ctl_softc; 4648 4649 ctl_softc = control_softc; 4650 4651 /* 4652 * ctl_alloc_lun() should handle all potential failure cases. 4653 */ 4654 ctl_alloc_lun(ctl_softc, NULL, be_lun, ctl_softc->target); 4655} 4656 4657int 4658ctl_add_lun(struct ctl_be_lun *be_lun) 4659{ 4660 struct ctl_softc *ctl_softc = control_softc; 4661 4662 mtx_lock(&ctl_softc->ctl_lock); 4663 STAILQ_INSERT_TAIL(&ctl_softc->pending_lun_queue, be_lun, links); 4664 mtx_unlock(&ctl_softc->ctl_lock); 4665 wakeup(&ctl_softc->pending_lun_queue); 4666 4667 return (0); 4668} 4669 4670int 4671ctl_enable_lun(struct ctl_be_lun *be_lun) 4672{ 4673 struct ctl_softc *ctl_softc; 4674 struct ctl_port *port, *nport; 4675 struct ctl_lun *lun; 4676 int retval; 4677 4678 ctl_softc = control_softc; 4679 4680 lun = (struct ctl_lun *)be_lun->ctl_lun; 4681 4682 mtx_lock(&ctl_softc->ctl_lock); 4683 mtx_lock(&lun->lun_lock); 4684 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4685 /* 4686 * eh? Why did we get called if the LUN is already 4687 * enabled? 4688 */ 4689 mtx_unlock(&lun->lun_lock); 4690 mtx_unlock(&ctl_softc->ctl_lock); 4691 return (0); 4692 } 4693 lun->flags &= ~CTL_LUN_DISABLED; 4694 mtx_unlock(&lun->lun_lock); 4695 4696 for (port = STAILQ_FIRST(&ctl_softc->port_list); port != NULL; port = nport) { 4697 nport = STAILQ_NEXT(port, links); 4698 4699 /* 4700 * Drop the lock while we call the FETD's enable routine. 4701 * This can lead to a callback into CTL (at least in the 4702 * case of the internal initiator frontend. 4703 */ 4704 mtx_unlock(&ctl_softc->ctl_lock); 4705 retval = port->lun_enable(port->targ_lun_arg, lun->target,lun->lun); 4706 mtx_lock(&ctl_softc->ctl_lock); 4707 if (retval != 0) { 4708 printf("%s: FETD %s port %d returned error " 4709 "%d for lun_enable on target %ju lun %jd\n", 4710 __func__, port->port_name, port->targ_port, retval, 4711 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4712 } 4713#if 0 4714 else { 4715 /* NOTE: TODO: why does lun enable affect port status? */ 4716 port->status |= CTL_PORT_STATUS_LUN_ONLINE; 4717 } 4718#endif 4719 } 4720 4721 mtx_unlock(&ctl_softc->ctl_lock); 4722 4723 return (0); 4724} 4725 4726int 4727ctl_disable_lun(struct ctl_be_lun *be_lun) 4728{ 4729 struct ctl_softc *ctl_softc; 4730 struct ctl_port *port; 4731 struct ctl_lun *lun; 4732 int retval; 4733 4734 ctl_softc = control_softc; 4735 4736 lun = (struct ctl_lun *)be_lun->ctl_lun; 4737 4738 mtx_lock(&ctl_softc->ctl_lock); 4739 mtx_lock(&lun->lun_lock); 4740 if (lun->flags & CTL_LUN_DISABLED) { 4741 mtx_unlock(&lun->lun_lock); 4742 mtx_unlock(&ctl_softc->ctl_lock); 4743 return (0); 4744 } 4745 lun->flags |= CTL_LUN_DISABLED; 4746 mtx_unlock(&lun->lun_lock); 4747 4748 STAILQ_FOREACH(port, &ctl_softc->port_list, links) { 4749 mtx_unlock(&ctl_softc->ctl_lock); 4750 /* 4751 * Drop the lock before we call the frontend's disable 4752 * routine, to avoid lock order reversals. 4753 * 4754 * XXX KDM what happens if the frontend list changes while 4755 * we're traversing it? It's unlikely, but should be handled. 4756 */ 4757 retval = port->lun_disable(port->targ_lun_arg, lun->target, 4758 lun->lun); 4759 mtx_lock(&ctl_softc->ctl_lock); 4760 if (retval != 0) { 4761 printf("ctl_alloc_lun: FETD %s port %d returned error " 4762 "%d for lun_disable on target %ju lun %jd\n", 4763 port->port_name, port->targ_port, retval, 4764 (uintmax_t)lun->target.id, (intmax_t)lun->lun); 4765 } 4766 } 4767 4768 mtx_unlock(&ctl_softc->ctl_lock); 4769 4770 return (0); 4771} 4772 4773int 4774ctl_start_lun(struct ctl_be_lun *be_lun) 4775{ 4776 struct ctl_softc *ctl_softc; 4777 struct ctl_lun *lun; 4778 4779 ctl_softc = control_softc; 4780 4781 lun = (struct ctl_lun *)be_lun->ctl_lun; 4782 4783 mtx_lock(&lun->lun_lock); 4784 lun->flags &= ~CTL_LUN_STOPPED; 4785 mtx_unlock(&lun->lun_lock); 4786 4787 return (0); 4788} 4789 4790int 4791ctl_stop_lun(struct ctl_be_lun *be_lun) 4792{ 4793 struct ctl_softc *ctl_softc; 4794 struct ctl_lun *lun; 4795 4796 ctl_softc = control_softc; 4797 4798 lun = (struct ctl_lun *)be_lun->ctl_lun; 4799 4800 mtx_lock(&lun->lun_lock); 4801 lun->flags |= CTL_LUN_STOPPED; 4802 mtx_unlock(&lun->lun_lock); 4803 4804 return (0); 4805} 4806 4807int 4808ctl_lun_offline(struct ctl_be_lun *be_lun) 4809{ 4810 struct ctl_softc *ctl_softc; 4811 struct ctl_lun *lun; 4812 4813 ctl_softc = control_softc; 4814 4815 lun = (struct ctl_lun *)be_lun->ctl_lun; 4816 4817 mtx_lock(&lun->lun_lock); 4818 lun->flags |= CTL_LUN_OFFLINE; 4819 mtx_unlock(&lun->lun_lock); 4820 4821 return (0); 4822} 4823 4824int 4825ctl_lun_online(struct ctl_be_lun *be_lun) 4826{ 4827 struct ctl_softc *ctl_softc; 4828 struct ctl_lun *lun; 4829 4830 ctl_softc = control_softc; 4831 4832 lun = (struct ctl_lun *)be_lun->ctl_lun; 4833 4834 mtx_lock(&lun->lun_lock); 4835 lun->flags &= ~CTL_LUN_OFFLINE; 4836 mtx_unlock(&lun->lun_lock); 4837 4838 return (0); 4839} 4840 4841int 4842ctl_invalidate_lun(struct ctl_be_lun *be_lun) 4843{ 4844 struct ctl_softc *ctl_softc; 4845 struct ctl_lun *lun; 4846 4847 ctl_softc = control_softc; 4848 4849 lun = (struct ctl_lun *)be_lun->ctl_lun; 4850 4851 mtx_lock(&lun->lun_lock); 4852 4853 /* 4854 * The LUN needs to be disabled before it can be marked invalid. 4855 */ 4856 if ((lun->flags & CTL_LUN_DISABLED) == 0) { 4857 mtx_unlock(&lun->lun_lock); 4858 return (-1); 4859 } 4860 /* 4861 * Mark the LUN invalid. 4862 */ 4863 lun->flags |= CTL_LUN_INVALID; 4864 4865 /* 4866 * If there is nothing in the OOA queue, go ahead and free the LUN. 4867 * If we have something in the OOA queue, we'll free it when the 4868 * last I/O completes. 4869 */ 4870 if (TAILQ_EMPTY(&lun->ooa_queue)) { 4871 mtx_unlock(&lun->lun_lock); 4872 mtx_lock(&ctl_softc->ctl_lock); 4873 ctl_free_lun(lun); 4874 mtx_unlock(&ctl_softc->ctl_lock); 4875 } else 4876 mtx_unlock(&lun->lun_lock); 4877 4878 return (0); 4879} 4880 4881int 4882ctl_lun_inoperable(struct ctl_be_lun *be_lun) 4883{ 4884 struct ctl_softc *ctl_softc; 4885 struct ctl_lun *lun; 4886 4887 ctl_softc = control_softc; 4888 lun = (struct ctl_lun *)be_lun->ctl_lun; 4889 4890 mtx_lock(&lun->lun_lock); 4891 lun->flags |= CTL_LUN_INOPERABLE; 4892 mtx_unlock(&lun->lun_lock); 4893 4894 return (0); 4895} 4896 4897int 4898ctl_lun_operable(struct ctl_be_lun *be_lun) 4899{ 4900 struct ctl_softc *ctl_softc; 4901 struct ctl_lun *lun; 4902 4903 ctl_softc = control_softc; 4904 lun = (struct ctl_lun *)be_lun->ctl_lun; 4905 4906 mtx_lock(&lun->lun_lock); 4907 lun->flags &= ~CTL_LUN_INOPERABLE; 4908 mtx_unlock(&lun->lun_lock); 4909 4910 return (0); 4911} 4912 4913int 4914ctl_lun_power_lock(struct ctl_be_lun *be_lun, struct ctl_nexus *nexus, 4915 int lock) 4916{ 4917 struct ctl_softc *softc; 4918 struct ctl_lun *lun; 4919 struct copan_aps_subpage *current_sp; 4920 struct ctl_page_index *page_index; 4921 int i; 4922 4923 softc = control_softc; 4924 4925 mtx_lock(&softc->ctl_lock); 4926 4927 lun = (struct ctl_lun *)be_lun->ctl_lun; 4928 mtx_lock(&lun->lun_lock); 4929 4930 page_index = NULL; 4931 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 4932 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 4933 APS_PAGE_CODE) 4934 continue; 4935 4936 if (lun->mode_pages.index[i].subpage != APS_SUBPAGE_CODE) 4937 continue; 4938 page_index = &lun->mode_pages.index[i]; 4939 } 4940 4941 if (page_index == NULL) { 4942 mtx_unlock(&lun->lun_lock); 4943 mtx_unlock(&softc->ctl_lock); 4944 printf("%s: APS subpage not found for lun %ju!\n", __func__, 4945 (uintmax_t)lun->lun); 4946 return (1); 4947 } 4948#if 0 4949 if ((softc->aps_locked_lun != 0) 4950 && (softc->aps_locked_lun != lun->lun)) { 4951 printf("%s: attempt to lock LUN %llu when %llu is already " 4952 "locked\n"); 4953 mtx_unlock(&lun->lun_lock); 4954 mtx_unlock(&softc->ctl_lock); 4955 return (1); 4956 } 4957#endif 4958 4959 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 4960 (page_index->page_len * CTL_PAGE_CURRENT)); 4961 4962 if (lock != 0) { 4963 current_sp->lock_active = APS_LOCK_ACTIVE; 4964 softc->aps_locked_lun = lun->lun; 4965 } else { 4966 current_sp->lock_active = 0; 4967 softc->aps_locked_lun = 0; 4968 } 4969 4970 4971 /* 4972 * If we're in HA mode, try to send the lock message to the other 4973 * side. 4974 */ 4975 if (ctl_is_single == 0) { 4976 int isc_retval; 4977 union ctl_ha_msg lock_msg; 4978 4979 lock_msg.hdr.nexus = *nexus; 4980 lock_msg.hdr.msg_type = CTL_MSG_APS_LOCK; 4981 if (lock != 0) 4982 lock_msg.aps.lock_flag = 1; 4983 else 4984 lock_msg.aps.lock_flag = 0; 4985 isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &lock_msg, 4986 sizeof(lock_msg), 0); 4987 if (isc_retval > CTL_HA_STATUS_SUCCESS) { 4988 printf("%s: APS (lock=%d) error returned from " 4989 "ctl_ha_msg_send: %d\n", __func__, lock, isc_retval); 4990 mtx_unlock(&lun->lun_lock); 4991 mtx_unlock(&softc->ctl_lock); 4992 return (1); 4993 } 4994 } 4995 4996 mtx_unlock(&lun->lun_lock); 4997 mtx_unlock(&softc->ctl_lock); 4998 4999 return (0); 5000} 5001 5002void 5003ctl_lun_capacity_changed(struct ctl_be_lun *be_lun) 5004{ 5005 struct ctl_lun *lun; 5006 struct ctl_softc *softc; 5007 int i; 5008 5009 softc = control_softc; 5010 5011 lun = (struct ctl_lun *)be_lun->ctl_lun; 5012 5013 mtx_lock(&lun->lun_lock); 5014 5015 for (i = 0; i < CTL_MAX_INITIATORS; i++) 5016 lun->pending_sense[i].ua_pending |= CTL_UA_CAPACITY_CHANGED; 5017 5018 mtx_unlock(&lun->lun_lock); 5019} 5020 5021/* 5022 * Backend "memory move is complete" callback for requests that never 5023 * make it down to say RAIDCore's configuration code. 5024 */ 5025int 5026ctl_config_move_done(union ctl_io *io) 5027{ 5028 int retval; 5029 5030 retval = CTL_RETVAL_COMPLETE; 5031 5032 5033 CTL_DEBUG_PRINT(("ctl_config_move_done\n")); 5034 /* 5035 * XXX KDM this shouldn't happen, but what if it does? 5036 */ 5037 if (io->io_hdr.io_type != CTL_IO_SCSI) 5038 panic("I/O type isn't CTL_IO_SCSI!"); 5039 5040 if ((io->io_hdr.port_status == 0) 5041 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 5042 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) 5043 io->io_hdr.status = CTL_SUCCESS; 5044 else if ((io->io_hdr.port_status != 0) 5045 && ((io->io_hdr.flags & CTL_FLAG_ABORT) == 0) 5046 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)){ 5047 /* 5048 * For hardware error sense keys, the sense key 5049 * specific value is defined to be a retry count, 5050 * but we use it to pass back an internal FETD 5051 * error code. XXX KDM Hopefully the FETD is only 5052 * using 16 bits for an error code, since that's 5053 * all the space we have in the sks field. 5054 */ 5055 ctl_set_internal_failure(&io->scsiio, 5056 /*sks_valid*/ 1, 5057 /*retry_count*/ 5058 io->io_hdr.port_status); 5059 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 5060 free(io->scsiio.kern_data_ptr, M_CTL); 5061 ctl_done(io); 5062 goto bailout; 5063 } 5064 5065 if (((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 5066 || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 5067 || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)) { 5068 /* 5069 * XXX KDM just assuming a single pointer here, and not a 5070 * S/G list. If we start using S/G lists for config data, 5071 * we'll need to know how to clean them up here as well. 5072 */ 5073 if (io->io_hdr.flags & CTL_FLAG_ALLOCATED) 5074 free(io->scsiio.kern_data_ptr, M_CTL); 5075 /* Hopefully the user has already set the status... */ 5076 ctl_done(io); 5077 } else { 5078 /* 5079 * XXX KDM now we need to continue data movement. Some 5080 * options: 5081 * - call ctl_scsiio() again? We don't do this for data 5082 * writes, because for those at least we know ahead of 5083 * time where the write will go and how long it is. For 5084 * config writes, though, that information is largely 5085 * contained within the write itself, thus we need to 5086 * parse out the data again. 5087 * 5088 * - Call some other function once the data is in? 5089 */ 5090 5091 /* 5092 * XXX KDM call ctl_scsiio() again for now, and check flag 5093 * bits to see whether we're allocated or not. 5094 */ 5095 retval = ctl_scsiio(&io->scsiio); 5096 } 5097bailout: 5098 return (retval); 5099} 5100 5101/* 5102 * This gets called by a backend driver when it is done with a 5103 * data_submit method. 5104 */ 5105void 5106ctl_data_submit_done(union ctl_io *io) 5107{ 5108 /* 5109 * If the IO_CONT flag is set, we need to call the supplied 5110 * function to continue processing the I/O, instead of completing 5111 * the I/O just yet. 5112 * 5113 * If there is an error, though, we don't want to keep processing. 5114 * Instead, just send status back to the initiator. 5115 */ 5116 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) && 5117 (io->io_hdr.flags & CTL_FLAG_ABORT) == 0 && 5118 ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 5119 (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 5120 io->scsiio.io_cont(io); 5121 return; 5122 } 5123 ctl_done(io); 5124} 5125 5126/* 5127 * This gets called by a backend driver when it is done with a 5128 * configuration write. 5129 */ 5130void 5131ctl_config_write_done(union ctl_io *io) 5132{ 5133 /* 5134 * If the IO_CONT flag is set, we need to call the supplied 5135 * function to continue processing the I/O, instead of completing 5136 * the I/O just yet. 5137 * 5138 * If there is an error, though, we don't want to keep processing. 5139 * Instead, just send status back to the initiator. 5140 */ 5141 if ((io->io_hdr.flags & CTL_FLAG_IO_CONT) 5142 && (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE) 5143 || ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS))) { 5144 io->scsiio.io_cont(io); 5145 return; 5146 } 5147 /* 5148 * Since a configuration write can be done for commands that actually 5149 * have data allocated, like write buffer, and commands that have 5150 * no data, like start/stop unit, we need to check here. 5151 */ 5152 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) 5153 free(io->scsiio.kern_data_ptr, M_CTL); 5154 ctl_done(io); 5155} 5156 5157/* 5158 * SCSI release command. 5159 */ 5160int 5161ctl_scsi_release(struct ctl_scsiio *ctsio) 5162{ 5163 int length, longid, thirdparty_id, resv_id; 5164 struct ctl_softc *ctl_softc; 5165 struct ctl_lun *lun; 5166 5167 length = 0; 5168 resv_id = 0; 5169 5170 CTL_DEBUG_PRINT(("ctl_scsi_release\n")); 5171 5172 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5173 ctl_softc = control_softc; 5174 5175 switch (ctsio->cdb[0]) { 5176 case RELEASE_10: { 5177 struct scsi_release_10 *cdb; 5178 5179 cdb = (struct scsi_release_10 *)ctsio->cdb; 5180 5181 if (cdb->byte2 & SR10_LONGID) 5182 longid = 1; 5183 else 5184 thirdparty_id = cdb->thirdparty_id; 5185 5186 resv_id = cdb->resv_id; 5187 length = scsi_2btoul(cdb->length); 5188 break; 5189 } 5190 } 5191 5192 5193 /* 5194 * XXX KDM right now, we only support LUN reservation. We don't 5195 * support 3rd party reservations, or extent reservations, which 5196 * might actually need the parameter list. If we've gotten this 5197 * far, we've got a LUN reservation. Anything else got kicked out 5198 * above. So, according to SPC, ignore the length. 5199 */ 5200 length = 0; 5201 5202 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5203 && (length > 0)) { 5204 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5205 ctsio->kern_data_len = length; 5206 ctsio->kern_total_len = length; 5207 ctsio->kern_data_resid = 0; 5208 ctsio->kern_rel_offset = 0; 5209 ctsio->kern_sg_entries = 0; 5210 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5211 ctsio->be_move_done = ctl_config_move_done; 5212 ctl_datamove((union ctl_io *)ctsio); 5213 5214 return (CTL_RETVAL_COMPLETE); 5215 } 5216 5217 if (length > 0) 5218 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5219 5220 mtx_lock(&lun->lun_lock); 5221 5222 /* 5223 * According to SPC, it is not an error for an intiator to attempt 5224 * to release a reservation on a LUN that isn't reserved, or that 5225 * is reserved by another initiator. The reservation can only be 5226 * released, though, by the initiator who made it or by one of 5227 * several reset type events. 5228 */ 5229 if (lun->flags & CTL_LUN_RESERVED) { 5230 if ((ctsio->io_hdr.nexus.initid.id == lun->rsv_nexus.initid.id) 5231 && (ctsio->io_hdr.nexus.targ_port == lun->rsv_nexus.targ_port) 5232 && (ctsio->io_hdr.nexus.targ_target.id == 5233 lun->rsv_nexus.targ_target.id)) { 5234 lun->flags &= ~CTL_LUN_RESERVED; 5235 } 5236 } 5237 5238 mtx_unlock(&lun->lun_lock); 5239 5240 ctsio->scsi_status = SCSI_STATUS_OK; 5241 ctsio->io_hdr.status = CTL_SUCCESS; 5242 5243 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5244 free(ctsio->kern_data_ptr, M_CTL); 5245 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5246 } 5247 5248 ctl_done((union ctl_io *)ctsio); 5249 return (CTL_RETVAL_COMPLETE); 5250} 5251 5252int 5253ctl_scsi_reserve(struct ctl_scsiio *ctsio) 5254{ 5255 int extent, thirdparty, longid; 5256 int resv_id, length; 5257 uint64_t thirdparty_id; 5258 struct ctl_softc *ctl_softc; 5259 struct ctl_lun *lun; 5260 5261 extent = 0; 5262 thirdparty = 0; 5263 longid = 0; 5264 resv_id = 0; 5265 length = 0; 5266 thirdparty_id = 0; 5267 5268 CTL_DEBUG_PRINT(("ctl_reserve\n")); 5269 5270 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5271 ctl_softc = control_softc; 5272 5273 switch (ctsio->cdb[0]) { 5274 case RESERVE_10: { 5275 struct scsi_reserve_10 *cdb; 5276 5277 cdb = (struct scsi_reserve_10 *)ctsio->cdb; 5278 5279 if (cdb->byte2 & SR10_LONGID) 5280 longid = 1; 5281 else 5282 thirdparty_id = cdb->thirdparty_id; 5283 5284 resv_id = cdb->resv_id; 5285 length = scsi_2btoul(cdb->length); 5286 break; 5287 } 5288 } 5289 5290 /* 5291 * XXX KDM right now, we only support LUN reservation. We don't 5292 * support 3rd party reservations, or extent reservations, which 5293 * might actually need the parameter list. If we've gotten this 5294 * far, we've got a LUN reservation. Anything else got kicked out 5295 * above. So, according to SPC, ignore the length. 5296 */ 5297 length = 0; 5298 5299 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5300 && (length > 0)) { 5301 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5302 ctsio->kern_data_len = length; 5303 ctsio->kern_total_len = length; 5304 ctsio->kern_data_resid = 0; 5305 ctsio->kern_rel_offset = 0; 5306 ctsio->kern_sg_entries = 0; 5307 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5308 ctsio->be_move_done = ctl_config_move_done; 5309 ctl_datamove((union ctl_io *)ctsio); 5310 5311 return (CTL_RETVAL_COMPLETE); 5312 } 5313 5314 if (length > 0) 5315 thirdparty_id = scsi_8btou64(ctsio->kern_data_ptr); 5316 5317 mtx_lock(&lun->lun_lock); 5318 if (lun->flags & CTL_LUN_RESERVED) { 5319 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 5320 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 5321 || (ctsio->io_hdr.nexus.targ_target.id != 5322 lun->rsv_nexus.targ_target.id)) { 5323 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 5324 ctsio->io_hdr.status = CTL_SCSI_ERROR; 5325 goto bailout; 5326 } 5327 } 5328 5329 lun->flags |= CTL_LUN_RESERVED; 5330 lun->rsv_nexus = ctsio->io_hdr.nexus; 5331 5332 ctsio->scsi_status = SCSI_STATUS_OK; 5333 ctsio->io_hdr.status = CTL_SUCCESS; 5334 5335bailout: 5336 mtx_unlock(&lun->lun_lock); 5337 5338 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5339 free(ctsio->kern_data_ptr, M_CTL); 5340 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5341 } 5342 5343 ctl_done((union ctl_io *)ctsio); 5344 return (CTL_RETVAL_COMPLETE); 5345} 5346 5347int 5348ctl_start_stop(struct ctl_scsiio *ctsio) 5349{ 5350 struct scsi_start_stop_unit *cdb; 5351 struct ctl_lun *lun; 5352 struct ctl_softc *ctl_softc; 5353 int retval; 5354 5355 CTL_DEBUG_PRINT(("ctl_start_stop\n")); 5356 5357 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5358 ctl_softc = control_softc; 5359 retval = 0; 5360 5361 cdb = (struct scsi_start_stop_unit *)ctsio->cdb; 5362 5363 /* 5364 * XXX KDM 5365 * We don't support the immediate bit on a stop unit. In order to 5366 * do that, we would need to code up a way to know that a stop is 5367 * pending, and hold off any new commands until it completes, one 5368 * way or another. Then we could accept or reject those commands 5369 * depending on its status. We would almost need to do the reverse 5370 * of what we do below for an immediate start -- return the copy of 5371 * the ctl_io to the FETD with status to send to the host (and to 5372 * free the copy!) and then free the original I/O once the stop 5373 * actually completes. That way, the OOA queue mechanism can work 5374 * to block commands that shouldn't proceed. Another alternative 5375 * would be to put the copy in the queue in place of the original, 5376 * and return the original back to the caller. That could be 5377 * slightly safer.. 5378 */ 5379 if ((cdb->byte2 & SSS_IMMED) 5380 && ((cdb->how & SSS_START) == 0)) { 5381 ctl_set_invalid_field(ctsio, 5382 /*sks_valid*/ 1, 5383 /*command*/ 1, 5384 /*field*/ 1, 5385 /*bit_valid*/ 1, 5386 /*bit*/ 0); 5387 ctl_done((union ctl_io *)ctsio); 5388 return (CTL_RETVAL_COMPLETE); 5389 } 5390 5391 if ((lun->flags & CTL_LUN_PR_RESERVED) 5392 && ((cdb->how & SSS_START)==0)) { 5393 uint32_t residx; 5394 5395 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5396 if (!lun->per_res[residx].registered 5397 || (lun->pr_res_idx!=residx && lun->res_type < 4)) { 5398 5399 ctl_set_reservation_conflict(ctsio); 5400 ctl_done((union ctl_io *)ctsio); 5401 return (CTL_RETVAL_COMPLETE); 5402 } 5403 } 5404 5405 /* 5406 * If there is no backend on this device, we can't start or stop 5407 * it. In theory we shouldn't get any start/stop commands in the 5408 * first place at this level if the LUN doesn't have a backend. 5409 * That should get stopped by the command decode code. 5410 */ 5411 if (lun->backend == NULL) { 5412 ctl_set_invalid_opcode(ctsio); 5413 ctl_done((union ctl_io *)ctsio); 5414 return (CTL_RETVAL_COMPLETE); 5415 } 5416 5417 /* 5418 * XXX KDM Copan-specific offline behavior. 5419 * Figure out a reasonable way to port this? 5420 */ 5421#ifdef NEEDTOPORT 5422 mtx_lock(&lun->lun_lock); 5423 5424 if (((cdb->byte2 & SSS_ONOFFLINE) == 0) 5425 && (lun->flags & CTL_LUN_OFFLINE)) { 5426 /* 5427 * If the LUN is offline, and the on/offline bit isn't set, 5428 * reject the start or stop. Otherwise, let it through. 5429 */ 5430 mtx_unlock(&lun->lun_lock); 5431 ctl_set_lun_not_ready(ctsio); 5432 ctl_done((union ctl_io *)ctsio); 5433 } else { 5434 mtx_unlock(&lun->lun_lock); 5435#endif /* NEEDTOPORT */ 5436 /* 5437 * This could be a start or a stop when we're online, 5438 * or a stop/offline or start/online. A start or stop when 5439 * we're offline is covered in the case above. 5440 */ 5441 /* 5442 * In the non-immediate case, we send the request to 5443 * the backend and return status to the user when 5444 * it is done. 5445 * 5446 * In the immediate case, we allocate a new ctl_io 5447 * to hold a copy of the request, and send that to 5448 * the backend. We then set good status on the 5449 * user's request and return it immediately. 5450 */ 5451 if (cdb->byte2 & SSS_IMMED) { 5452 union ctl_io *new_io; 5453 5454 new_io = ctl_alloc_io(ctsio->io_hdr.pool); 5455 if (new_io == NULL) { 5456 ctl_set_busy(ctsio); 5457 ctl_done((union ctl_io *)ctsio); 5458 } else { 5459 ctl_copy_io((union ctl_io *)ctsio, 5460 new_io); 5461 retval = lun->backend->config_write(new_io); 5462 ctl_set_success(ctsio); 5463 ctl_done((union ctl_io *)ctsio); 5464 } 5465 } else { 5466 retval = lun->backend->config_write( 5467 (union ctl_io *)ctsio); 5468 } 5469#ifdef NEEDTOPORT 5470 } 5471#endif 5472 return (retval); 5473} 5474 5475/* 5476 * We support the SYNCHRONIZE CACHE command (10 and 16 byte versions), but 5477 * we don't really do anything with the LBA and length fields if the user 5478 * passes them in. Instead we'll just flush out the cache for the entire 5479 * LUN. 5480 */ 5481int 5482ctl_sync_cache(struct ctl_scsiio *ctsio) 5483{ 5484 struct ctl_lun *lun; 5485 struct ctl_softc *ctl_softc; 5486 uint64_t starting_lba; 5487 uint32_t block_count; 5488 int retval; 5489 5490 CTL_DEBUG_PRINT(("ctl_sync_cache\n")); 5491 5492 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5493 ctl_softc = control_softc; 5494 retval = 0; 5495 5496 switch (ctsio->cdb[0]) { 5497 case SYNCHRONIZE_CACHE: { 5498 struct scsi_sync_cache *cdb; 5499 cdb = (struct scsi_sync_cache *)ctsio->cdb; 5500 5501 starting_lba = scsi_4btoul(cdb->begin_lba); 5502 block_count = scsi_2btoul(cdb->lb_count); 5503 break; 5504 } 5505 case SYNCHRONIZE_CACHE_16: { 5506 struct scsi_sync_cache_16 *cdb; 5507 cdb = (struct scsi_sync_cache_16 *)ctsio->cdb; 5508 5509 starting_lba = scsi_8btou64(cdb->begin_lba); 5510 block_count = scsi_4btoul(cdb->lb_count); 5511 break; 5512 } 5513 default: 5514 ctl_set_invalid_opcode(ctsio); 5515 ctl_done((union ctl_io *)ctsio); 5516 goto bailout; 5517 break; /* NOTREACHED */ 5518 } 5519 5520 /* 5521 * We check the LBA and length, but don't do anything with them. 5522 * A SYNCHRONIZE CACHE will cause the entire cache for this lun to 5523 * get flushed. This check will just help satisfy anyone who wants 5524 * to see an error for an out of range LBA. 5525 */ 5526 if ((starting_lba + block_count) > (lun->be_lun->maxlba + 1)) { 5527 ctl_set_lba_out_of_range(ctsio); 5528 ctl_done((union ctl_io *)ctsio); 5529 goto bailout; 5530 } 5531 5532 /* 5533 * If this LUN has no backend, we can't flush the cache anyway. 5534 */ 5535 if (lun->backend == NULL) { 5536 ctl_set_invalid_opcode(ctsio); 5537 ctl_done((union ctl_io *)ctsio); 5538 goto bailout; 5539 } 5540 5541 /* 5542 * Check to see whether we're configured to send the SYNCHRONIZE 5543 * CACHE command directly to the back end. 5544 */ 5545 mtx_lock(&lun->lun_lock); 5546 if ((ctl_softc->flags & CTL_FLAG_REAL_SYNC) 5547 && (++(lun->sync_count) >= lun->sync_interval)) { 5548 lun->sync_count = 0; 5549 mtx_unlock(&lun->lun_lock); 5550 retval = lun->backend->config_write((union ctl_io *)ctsio); 5551 } else { 5552 mtx_unlock(&lun->lun_lock); 5553 ctl_set_success(ctsio); 5554 ctl_done((union ctl_io *)ctsio); 5555 } 5556 5557bailout: 5558 5559 return (retval); 5560} 5561 5562int 5563ctl_format(struct ctl_scsiio *ctsio) 5564{ 5565 struct scsi_format *cdb; 5566 struct ctl_lun *lun; 5567 struct ctl_softc *ctl_softc; 5568 int length, defect_list_len; 5569 5570 CTL_DEBUG_PRINT(("ctl_format\n")); 5571 5572 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5573 ctl_softc = control_softc; 5574 5575 cdb = (struct scsi_format *)ctsio->cdb; 5576 5577 length = 0; 5578 if (cdb->byte2 & SF_FMTDATA) { 5579 if (cdb->byte2 & SF_LONGLIST) 5580 length = sizeof(struct scsi_format_header_long); 5581 else 5582 length = sizeof(struct scsi_format_header_short); 5583 } 5584 5585 if (((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) 5586 && (length > 0)) { 5587 ctsio->kern_data_ptr = malloc(length, M_CTL, M_WAITOK); 5588 ctsio->kern_data_len = length; 5589 ctsio->kern_total_len = length; 5590 ctsio->kern_data_resid = 0; 5591 ctsio->kern_rel_offset = 0; 5592 ctsio->kern_sg_entries = 0; 5593 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5594 ctsio->be_move_done = ctl_config_move_done; 5595 ctl_datamove((union ctl_io *)ctsio); 5596 5597 return (CTL_RETVAL_COMPLETE); 5598 } 5599 5600 defect_list_len = 0; 5601 5602 if (cdb->byte2 & SF_FMTDATA) { 5603 if (cdb->byte2 & SF_LONGLIST) { 5604 struct scsi_format_header_long *header; 5605 5606 header = (struct scsi_format_header_long *) 5607 ctsio->kern_data_ptr; 5608 5609 defect_list_len = scsi_4btoul(header->defect_list_len); 5610 if (defect_list_len != 0) { 5611 ctl_set_invalid_field(ctsio, 5612 /*sks_valid*/ 1, 5613 /*command*/ 0, 5614 /*field*/ 2, 5615 /*bit_valid*/ 0, 5616 /*bit*/ 0); 5617 goto bailout; 5618 } 5619 } else { 5620 struct scsi_format_header_short *header; 5621 5622 header = (struct scsi_format_header_short *) 5623 ctsio->kern_data_ptr; 5624 5625 defect_list_len = scsi_2btoul(header->defect_list_len); 5626 if (defect_list_len != 0) { 5627 ctl_set_invalid_field(ctsio, 5628 /*sks_valid*/ 1, 5629 /*command*/ 0, 5630 /*field*/ 2, 5631 /*bit_valid*/ 0, 5632 /*bit*/ 0); 5633 goto bailout; 5634 } 5635 } 5636 } 5637 5638 /* 5639 * The format command will clear out the "Medium format corrupted" 5640 * status if set by the configuration code. That status is really 5641 * just a way to notify the host that we have lost the media, and 5642 * get them to issue a command that will basically make them think 5643 * they're blowing away the media. 5644 */ 5645 mtx_lock(&lun->lun_lock); 5646 lun->flags &= ~CTL_LUN_INOPERABLE; 5647 mtx_unlock(&lun->lun_lock); 5648 5649 ctsio->scsi_status = SCSI_STATUS_OK; 5650 ctsio->io_hdr.status = CTL_SUCCESS; 5651bailout: 5652 5653 if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) { 5654 free(ctsio->kern_data_ptr, M_CTL); 5655 ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED; 5656 } 5657 5658 ctl_done((union ctl_io *)ctsio); 5659 return (CTL_RETVAL_COMPLETE); 5660} 5661 5662int 5663ctl_read_buffer(struct ctl_scsiio *ctsio) 5664{ 5665 struct scsi_read_buffer *cdb; 5666 struct ctl_lun *lun; 5667 int buffer_offset, len; 5668 static uint8_t descr[4]; 5669 static uint8_t echo_descr[4] = { 0 }; 5670 5671 CTL_DEBUG_PRINT(("ctl_read_buffer\n")); 5672 5673 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5674 cdb = (struct scsi_read_buffer *)ctsio->cdb; 5675 5676 if (lun->flags & CTL_LUN_PR_RESERVED) { 5677 uint32_t residx; 5678 5679 /* 5680 * XXX KDM need a lock here. 5681 */ 5682 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 5683 if ((lun->res_type == SPR_TYPE_EX_AC 5684 && residx != lun->pr_res_idx) 5685 || ((lun->res_type == SPR_TYPE_EX_AC_RO 5686 || lun->res_type == SPR_TYPE_EX_AC_AR) 5687 && !lun->per_res[residx].registered)) { 5688 ctl_set_reservation_conflict(ctsio); 5689 ctl_done((union ctl_io *)ctsio); 5690 return (CTL_RETVAL_COMPLETE); 5691 } 5692 } 5693 5694 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA && 5695 (cdb->byte2 & RWB_MODE) != RWB_MODE_ECHO_DESCR && 5696 (cdb->byte2 & RWB_MODE) != RWB_MODE_DESCR) { 5697 ctl_set_invalid_field(ctsio, 5698 /*sks_valid*/ 1, 5699 /*command*/ 1, 5700 /*field*/ 1, 5701 /*bit_valid*/ 1, 5702 /*bit*/ 4); 5703 ctl_done((union ctl_io *)ctsio); 5704 return (CTL_RETVAL_COMPLETE); 5705 } 5706 5707 len = scsi_3btoul(cdb->length); 5708 buffer_offset = scsi_3btoul(cdb->offset); 5709 5710 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5711 ctl_set_invalid_field(ctsio, 5712 /*sks_valid*/ 1, 5713 /*command*/ 1, 5714 /*field*/ 6, 5715 /*bit_valid*/ 0, 5716 /*bit*/ 0); 5717 ctl_done((union ctl_io *)ctsio); 5718 return (CTL_RETVAL_COMPLETE); 5719 } 5720 5721 if ((cdb->byte2 & RWB_MODE) == RWB_MODE_DESCR) { 5722 descr[0] = 0; 5723 scsi_ulto3b(sizeof(lun->write_buffer), &descr[1]); 5724 ctsio->kern_data_ptr = descr; 5725 len = min(len, sizeof(descr)); 5726 } else if ((cdb->byte2 & RWB_MODE) == RWB_MODE_ECHO_DESCR) { 5727 ctsio->kern_data_ptr = echo_descr; 5728 len = min(len, sizeof(echo_descr)); 5729 } else 5730 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5731 ctsio->kern_data_len = len; 5732 ctsio->kern_total_len = len; 5733 ctsio->kern_data_resid = 0; 5734 ctsio->kern_rel_offset = 0; 5735 ctsio->kern_sg_entries = 0; 5736 ctsio->be_move_done = ctl_config_move_done; 5737 ctl_datamove((union ctl_io *)ctsio); 5738 5739 return (CTL_RETVAL_COMPLETE); 5740} 5741 5742int 5743ctl_write_buffer(struct ctl_scsiio *ctsio) 5744{ 5745 struct scsi_write_buffer *cdb; 5746 struct ctl_lun *lun; 5747 int buffer_offset, len; 5748 5749 CTL_DEBUG_PRINT(("ctl_write_buffer\n")); 5750 5751 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5752 cdb = (struct scsi_write_buffer *)ctsio->cdb; 5753 5754 if ((cdb->byte2 & RWB_MODE) != RWB_MODE_DATA) { 5755 ctl_set_invalid_field(ctsio, 5756 /*sks_valid*/ 1, 5757 /*command*/ 1, 5758 /*field*/ 1, 5759 /*bit_valid*/ 1, 5760 /*bit*/ 4); 5761 ctl_done((union ctl_io *)ctsio); 5762 return (CTL_RETVAL_COMPLETE); 5763 } 5764 5765 len = scsi_3btoul(cdb->length); 5766 buffer_offset = scsi_3btoul(cdb->offset); 5767 5768 if (buffer_offset + len > sizeof(lun->write_buffer)) { 5769 ctl_set_invalid_field(ctsio, 5770 /*sks_valid*/ 1, 5771 /*command*/ 1, 5772 /*field*/ 6, 5773 /*bit_valid*/ 0, 5774 /*bit*/ 0); 5775 ctl_done((union ctl_io *)ctsio); 5776 return (CTL_RETVAL_COMPLETE); 5777 } 5778 5779 /* 5780 * If we've got a kernel request that hasn't been malloced yet, 5781 * malloc it and tell the caller the data buffer is here. 5782 */ 5783 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5784 ctsio->kern_data_ptr = lun->write_buffer + buffer_offset; 5785 ctsio->kern_data_len = len; 5786 ctsio->kern_total_len = len; 5787 ctsio->kern_data_resid = 0; 5788 ctsio->kern_rel_offset = 0; 5789 ctsio->kern_sg_entries = 0; 5790 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5791 ctsio->be_move_done = ctl_config_move_done; 5792 ctl_datamove((union ctl_io *)ctsio); 5793 5794 return (CTL_RETVAL_COMPLETE); 5795 } 5796 5797 ctl_done((union ctl_io *)ctsio); 5798 5799 return (CTL_RETVAL_COMPLETE); 5800} 5801 5802int 5803ctl_write_same(struct ctl_scsiio *ctsio) 5804{ 5805 struct ctl_lun *lun; 5806 struct ctl_lba_len_flags *lbalen; 5807 uint64_t lba; 5808 uint32_t num_blocks; 5809 int len, retval; 5810 uint8_t byte2; 5811 5812 retval = CTL_RETVAL_COMPLETE; 5813 5814 CTL_DEBUG_PRINT(("ctl_write_same\n")); 5815 5816 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5817 5818 switch (ctsio->cdb[0]) { 5819 case WRITE_SAME_10: { 5820 struct scsi_write_same_10 *cdb; 5821 5822 cdb = (struct scsi_write_same_10 *)ctsio->cdb; 5823 5824 lba = scsi_4btoul(cdb->addr); 5825 num_blocks = scsi_2btoul(cdb->length); 5826 byte2 = cdb->byte2; 5827 break; 5828 } 5829 case WRITE_SAME_16: { 5830 struct scsi_write_same_16 *cdb; 5831 5832 cdb = (struct scsi_write_same_16 *)ctsio->cdb; 5833 5834 lba = scsi_8btou64(cdb->addr); 5835 num_blocks = scsi_4btoul(cdb->length); 5836 byte2 = cdb->byte2; 5837 break; 5838 } 5839 default: 5840 /* 5841 * We got a command we don't support. This shouldn't 5842 * happen, commands should be filtered out above us. 5843 */ 5844 ctl_set_invalid_opcode(ctsio); 5845 ctl_done((union ctl_io *)ctsio); 5846 5847 return (CTL_RETVAL_COMPLETE); 5848 break; /* NOTREACHED */ 5849 } 5850 5851 /* 5852 * The first check is to make sure we're in bounds, the second 5853 * check is to catch wrap-around problems. If the lba + num blocks 5854 * is less than the lba, then we've wrapped around and the block 5855 * range is invalid anyway. 5856 */ 5857 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5858 || ((lba + num_blocks) < lba)) { 5859 ctl_set_lba_out_of_range(ctsio); 5860 ctl_done((union ctl_io *)ctsio); 5861 return (CTL_RETVAL_COMPLETE); 5862 } 5863 5864 /* Zero number of blocks means "to the last logical block" */ 5865 if (num_blocks == 0) { 5866 if ((lun->be_lun->maxlba + 1) - lba > UINT32_MAX) { 5867 ctl_set_invalid_field(ctsio, 5868 /*sks_valid*/ 0, 5869 /*command*/ 1, 5870 /*field*/ 0, 5871 /*bit_valid*/ 0, 5872 /*bit*/ 0); 5873 ctl_done((union ctl_io *)ctsio); 5874 return (CTL_RETVAL_COMPLETE); 5875 } 5876 num_blocks = (lun->be_lun->maxlba + 1) - lba; 5877 } 5878 5879 len = lun->be_lun->blocksize; 5880 5881 /* 5882 * If we've got a kernel request that hasn't been malloced yet, 5883 * malloc it and tell the caller the data buffer is here. 5884 */ 5885 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5886 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5887 ctsio->kern_data_len = len; 5888 ctsio->kern_total_len = len; 5889 ctsio->kern_data_resid = 0; 5890 ctsio->kern_rel_offset = 0; 5891 ctsio->kern_sg_entries = 0; 5892 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5893 ctsio->be_move_done = ctl_config_move_done; 5894 ctl_datamove((union ctl_io *)ctsio); 5895 5896 return (CTL_RETVAL_COMPLETE); 5897 } 5898 5899 lbalen = (struct ctl_lba_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5900 lbalen->lba = lba; 5901 lbalen->len = num_blocks; 5902 lbalen->flags = byte2; 5903 retval = lun->backend->config_write((union ctl_io *)ctsio); 5904 5905 return (retval); 5906} 5907 5908int 5909ctl_unmap(struct ctl_scsiio *ctsio) 5910{ 5911 struct ctl_lun *lun; 5912 struct scsi_unmap *cdb; 5913 struct ctl_ptr_len_flags *ptrlen; 5914 struct scsi_unmap_header *hdr; 5915 struct scsi_unmap_desc *buf, *end; 5916 uint64_t lba; 5917 uint32_t num_blocks; 5918 int len, retval; 5919 uint8_t byte2; 5920 5921 retval = CTL_RETVAL_COMPLETE; 5922 5923 CTL_DEBUG_PRINT(("ctl_unmap\n")); 5924 5925 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 5926 cdb = (struct scsi_unmap *)ctsio->cdb; 5927 5928 len = scsi_2btoul(cdb->length); 5929 byte2 = cdb->byte2; 5930 5931 /* 5932 * If we've got a kernel request that hasn't been malloced yet, 5933 * malloc it and tell the caller the data buffer is here. 5934 */ 5935 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 5936 ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);; 5937 ctsio->kern_data_len = len; 5938 ctsio->kern_total_len = len; 5939 ctsio->kern_data_resid = 0; 5940 ctsio->kern_rel_offset = 0; 5941 ctsio->kern_sg_entries = 0; 5942 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 5943 ctsio->be_move_done = ctl_config_move_done; 5944 ctl_datamove((union ctl_io *)ctsio); 5945 5946 return (CTL_RETVAL_COMPLETE); 5947 } 5948 5949 len = ctsio->kern_total_len - ctsio->kern_data_resid; 5950 hdr = (struct scsi_unmap_header *)ctsio->kern_data_ptr; 5951 if (len < sizeof (*hdr) || 5952 len < (scsi_2btoul(hdr->length) + sizeof(hdr->length)) || 5953 len < (scsi_2btoul(hdr->desc_length) + sizeof (*hdr)) || 5954 scsi_2btoul(hdr->desc_length) % sizeof(*buf) != 0) { 5955 ctl_set_invalid_field(ctsio, 5956 /*sks_valid*/ 0, 5957 /*command*/ 0, 5958 /*field*/ 0, 5959 /*bit_valid*/ 0, 5960 /*bit*/ 0); 5961 ctl_done((union ctl_io *)ctsio); 5962 return (CTL_RETVAL_COMPLETE); 5963 } 5964 len = scsi_2btoul(hdr->desc_length); 5965 buf = (struct scsi_unmap_desc *)(hdr + 1); 5966 end = buf + len / sizeof(*buf); 5967 5968 ptrlen = (struct ctl_ptr_len_flags *)&ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 5969 ptrlen->ptr = (void *)buf; 5970 ptrlen->len = len; 5971 ptrlen->flags = byte2; 5972 5973 for (; buf < end; buf++) { 5974 lba = scsi_8btou64(buf->lba); 5975 num_blocks = scsi_4btoul(buf->length); 5976 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 5977 || ((lba + num_blocks) < lba)) { 5978 ctl_set_lba_out_of_range(ctsio); 5979 ctl_done((union ctl_io *)ctsio); 5980 return (CTL_RETVAL_COMPLETE); 5981 } 5982 } 5983 5984 retval = lun->backend->config_write((union ctl_io *)ctsio); 5985 5986 return (retval); 5987} 5988 5989/* 5990 * Note that this function currently doesn't actually do anything inside 5991 * CTL to enforce things if the DQue bit is turned on. 5992 * 5993 * Also note that this function can't be used in the default case, because 5994 * the DQue bit isn't set in the changeable mask for the control mode page 5995 * anyway. This is just here as an example for how to implement a page 5996 * handler, and a placeholder in case we want to allow the user to turn 5997 * tagged queueing on and off. 5998 * 5999 * The D_SENSE bit handling is functional, however, and will turn 6000 * descriptor sense on and off for a given LUN. 6001 */ 6002int 6003ctl_control_page_handler(struct ctl_scsiio *ctsio, 6004 struct ctl_page_index *page_index, uint8_t *page_ptr) 6005{ 6006 struct scsi_control_page *current_cp, *saved_cp, *user_cp; 6007 struct ctl_lun *lun; 6008 struct ctl_softc *softc; 6009 int set_ua; 6010 uint32_t initidx; 6011 6012 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6013 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 6014 set_ua = 0; 6015 6016 user_cp = (struct scsi_control_page *)page_ptr; 6017 current_cp = (struct scsi_control_page *) 6018 (page_index->page_data + (page_index->page_len * 6019 CTL_PAGE_CURRENT)); 6020 saved_cp = (struct scsi_control_page *) 6021 (page_index->page_data + (page_index->page_len * 6022 CTL_PAGE_SAVED)); 6023 6024 softc = control_softc; 6025 6026 mtx_lock(&lun->lun_lock); 6027 if (((current_cp->rlec & SCP_DSENSE) == 0) 6028 && ((user_cp->rlec & SCP_DSENSE) != 0)) { 6029 /* 6030 * Descriptor sense is currently turned off and the user 6031 * wants to turn it on. 6032 */ 6033 current_cp->rlec |= SCP_DSENSE; 6034 saved_cp->rlec |= SCP_DSENSE; 6035 lun->flags |= CTL_LUN_SENSE_DESC; 6036 set_ua = 1; 6037 } else if (((current_cp->rlec & SCP_DSENSE) != 0) 6038 && ((user_cp->rlec & SCP_DSENSE) == 0)) { 6039 /* 6040 * Descriptor sense is currently turned on, and the user 6041 * wants to turn it off. 6042 */ 6043 current_cp->rlec &= ~SCP_DSENSE; 6044 saved_cp->rlec &= ~SCP_DSENSE; 6045 lun->flags &= ~CTL_LUN_SENSE_DESC; 6046 set_ua = 1; 6047 } 6048 if (current_cp->queue_flags & SCP_QUEUE_DQUE) { 6049 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6050#ifdef NEEDTOPORT 6051 csevent_log(CSC_CTL | CSC_SHELF_SW | 6052 CTL_UNTAG_TO_UNTAG, 6053 csevent_LogType_Trace, 6054 csevent_Severity_Information, 6055 csevent_AlertLevel_Green, 6056 csevent_FRU_Firmware, 6057 csevent_FRU_Unknown, 6058 "Received untagged to untagged transition"); 6059#endif /* NEEDTOPORT */ 6060 } else { 6061#ifdef NEEDTOPORT 6062 csevent_log(CSC_CTL | CSC_SHELF_SW | 6063 CTL_UNTAG_TO_TAG, 6064 csevent_LogType_ConfigChange, 6065 csevent_Severity_Information, 6066 csevent_AlertLevel_Green, 6067 csevent_FRU_Firmware, 6068 csevent_FRU_Unknown, 6069 "Received untagged to tagged " 6070 "queueing transition"); 6071#endif /* NEEDTOPORT */ 6072 6073 current_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6074 saved_cp->queue_flags &= ~SCP_QUEUE_DQUE; 6075 set_ua = 1; 6076 } 6077 } else { 6078 if (user_cp->queue_flags & SCP_QUEUE_DQUE) { 6079#ifdef NEEDTOPORT 6080 csevent_log(CSC_CTL | CSC_SHELF_SW | 6081 CTL_TAG_TO_UNTAG, 6082 csevent_LogType_ConfigChange, 6083 csevent_Severity_Warning, 6084 csevent_AlertLevel_Yellow, 6085 csevent_FRU_Firmware, 6086 csevent_FRU_Unknown, 6087 "Received tagged queueing to untagged " 6088 "transition"); 6089#endif /* NEEDTOPORT */ 6090 6091 current_cp->queue_flags |= SCP_QUEUE_DQUE; 6092 saved_cp->queue_flags |= SCP_QUEUE_DQUE; 6093 set_ua = 1; 6094 } else { 6095#ifdef NEEDTOPORT 6096 csevent_log(CSC_CTL | CSC_SHELF_SW | 6097 CTL_TAG_TO_TAG, 6098 csevent_LogType_Trace, 6099 csevent_Severity_Information, 6100 csevent_AlertLevel_Green, 6101 csevent_FRU_Firmware, 6102 csevent_FRU_Unknown, 6103 "Received tagged queueing to tagged " 6104 "queueing transition"); 6105#endif /* NEEDTOPORT */ 6106 } 6107 } 6108 if (set_ua != 0) { 6109 int i; 6110 /* 6111 * Let other initiators know that the mode 6112 * parameters for this LUN have changed. 6113 */ 6114 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 6115 if (i == initidx) 6116 continue; 6117 6118 lun->pending_sense[i].ua_pending |= 6119 CTL_UA_MODE_CHANGE; 6120 } 6121 } 6122 mtx_unlock(&lun->lun_lock); 6123 6124 return (0); 6125} 6126 6127int 6128ctl_power_sp_handler(struct ctl_scsiio *ctsio, 6129 struct ctl_page_index *page_index, uint8_t *page_ptr) 6130{ 6131 return (0); 6132} 6133 6134int 6135ctl_power_sp_sense_handler(struct ctl_scsiio *ctsio, 6136 struct ctl_page_index *page_index, int pc) 6137{ 6138 struct copan_power_subpage *page; 6139 6140 page = (struct copan_power_subpage *)page_index->page_data + 6141 (page_index->page_len * pc); 6142 6143 switch (pc) { 6144 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6145 /* 6146 * We don't update the changable bits for this page. 6147 */ 6148 break; 6149 case SMS_PAGE_CTRL_CURRENT >> 6: 6150 case SMS_PAGE_CTRL_DEFAULT >> 6: 6151 case SMS_PAGE_CTRL_SAVED >> 6: 6152#ifdef NEEDTOPORT 6153 ctl_update_power_subpage(page); 6154#endif 6155 break; 6156 default: 6157#ifdef NEEDTOPORT 6158 EPRINT(0, "Invalid PC %d!!", pc); 6159#endif 6160 break; 6161 } 6162 return (0); 6163} 6164 6165 6166int 6167ctl_aps_sp_handler(struct ctl_scsiio *ctsio, 6168 struct ctl_page_index *page_index, uint8_t *page_ptr) 6169{ 6170 struct copan_aps_subpage *user_sp; 6171 struct copan_aps_subpage *current_sp; 6172 union ctl_modepage_info *modepage_info; 6173 struct ctl_softc *softc; 6174 struct ctl_lun *lun; 6175 int retval; 6176 6177 retval = CTL_RETVAL_COMPLETE; 6178 current_sp = (struct copan_aps_subpage *)(page_index->page_data + 6179 (page_index->page_len * CTL_PAGE_CURRENT)); 6180 softc = control_softc; 6181 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6182 6183 user_sp = (struct copan_aps_subpage *)page_ptr; 6184 6185 modepage_info = (union ctl_modepage_info *) 6186 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6187 6188 modepage_info->header.page_code = page_index->page_code & SMPH_PC_MASK; 6189 modepage_info->header.subpage = page_index->subpage; 6190 modepage_info->aps.lock_active = user_sp->lock_active; 6191 6192 mtx_lock(&softc->ctl_lock); 6193 6194 /* 6195 * If there is a request to lock the LUN and another LUN is locked 6196 * this is an error. If the requested LUN is already locked ignore 6197 * the request. If no LUN is locked attempt to lock it. 6198 * if there is a request to unlock the LUN and the LUN is currently 6199 * locked attempt to unlock it. Otherwise ignore the request. i.e. 6200 * if another LUN is locked or no LUN is locked. 6201 */ 6202 if (user_sp->lock_active & APS_LOCK_ACTIVE) { 6203 if (softc->aps_locked_lun == lun->lun) { 6204 /* 6205 * This LUN is already locked, so we're done. 6206 */ 6207 retval = CTL_RETVAL_COMPLETE; 6208 } else if (softc->aps_locked_lun == 0) { 6209 /* 6210 * No one has the lock, pass the request to the 6211 * backend. 6212 */ 6213 retval = lun->backend->config_write( 6214 (union ctl_io *)ctsio); 6215 } else { 6216 /* 6217 * Someone else has the lock, throw out the request. 6218 */ 6219 ctl_set_already_locked(ctsio); 6220 free(ctsio->kern_data_ptr, M_CTL); 6221 ctl_done((union ctl_io *)ctsio); 6222 6223 /* 6224 * Set the return value so that ctl_do_mode_select() 6225 * won't try to complete the command. We already 6226 * completed it here. 6227 */ 6228 retval = CTL_RETVAL_ERROR; 6229 } 6230 } else if (softc->aps_locked_lun == lun->lun) { 6231 /* 6232 * This LUN is locked, so pass the unlock request to the 6233 * backend. 6234 */ 6235 retval = lun->backend->config_write((union ctl_io *)ctsio); 6236 } 6237 mtx_unlock(&softc->ctl_lock); 6238 6239 return (retval); 6240} 6241 6242int 6243ctl_debugconf_sp_select_handler(struct ctl_scsiio *ctsio, 6244 struct ctl_page_index *page_index, 6245 uint8_t *page_ptr) 6246{ 6247 uint8_t *c; 6248 int i; 6249 6250 c = ((struct copan_debugconf_subpage *)page_ptr)->ctl_time_io_secs; 6251 ctl_time_io_secs = 6252 (c[0] << 8) | 6253 (c[1] << 0) | 6254 0; 6255 CTL_DEBUG_PRINT(("set ctl_time_io_secs to %d\n", ctl_time_io_secs)); 6256 printf("set ctl_time_io_secs to %d\n", ctl_time_io_secs); 6257 printf("page data:"); 6258 for (i=0; i<8; i++) 6259 printf(" %.2x",page_ptr[i]); 6260 printf("\n"); 6261 return (0); 6262} 6263 6264int 6265ctl_debugconf_sp_sense_handler(struct ctl_scsiio *ctsio, 6266 struct ctl_page_index *page_index, 6267 int pc) 6268{ 6269 struct copan_debugconf_subpage *page; 6270 6271 page = (struct copan_debugconf_subpage *)page_index->page_data + 6272 (page_index->page_len * pc); 6273 6274 switch (pc) { 6275 case SMS_PAGE_CTRL_CHANGEABLE >> 6: 6276 case SMS_PAGE_CTRL_DEFAULT >> 6: 6277 case SMS_PAGE_CTRL_SAVED >> 6: 6278 /* 6279 * We don't update the changable or default bits for this page. 6280 */ 6281 break; 6282 case SMS_PAGE_CTRL_CURRENT >> 6: 6283 page->ctl_time_io_secs[0] = ctl_time_io_secs >> 8; 6284 page->ctl_time_io_secs[1] = ctl_time_io_secs >> 0; 6285 break; 6286 default: 6287#ifdef NEEDTOPORT 6288 EPRINT(0, "Invalid PC %d!!", pc); 6289#endif /* NEEDTOPORT */ 6290 break; 6291 } 6292 return (0); 6293} 6294 6295 6296static int 6297ctl_do_mode_select(union ctl_io *io) 6298{ 6299 struct scsi_mode_page_header *page_header; 6300 struct ctl_page_index *page_index; 6301 struct ctl_scsiio *ctsio; 6302 int control_dev, page_len; 6303 int page_len_offset, page_len_size; 6304 union ctl_modepage_info *modepage_info; 6305 struct ctl_lun *lun; 6306 int *len_left, *len_used; 6307 int retval, i; 6308 6309 ctsio = &io->scsiio; 6310 page_index = NULL; 6311 page_len = 0; 6312 retval = CTL_RETVAL_COMPLETE; 6313 6314 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6315 6316 if (lun->be_lun->lun_type != T_DIRECT) 6317 control_dev = 1; 6318 else 6319 control_dev = 0; 6320 6321 modepage_info = (union ctl_modepage_info *) 6322 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6323 len_left = &modepage_info->header.len_left; 6324 len_used = &modepage_info->header.len_used; 6325 6326do_next_page: 6327 6328 page_header = (struct scsi_mode_page_header *) 6329 (ctsio->kern_data_ptr + *len_used); 6330 6331 if (*len_left == 0) { 6332 free(ctsio->kern_data_ptr, M_CTL); 6333 ctl_set_success(ctsio); 6334 ctl_done((union ctl_io *)ctsio); 6335 return (CTL_RETVAL_COMPLETE); 6336 } else if (*len_left < sizeof(struct scsi_mode_page_header)) { 6337 6338 free(ctsio->kern_data_ptr, M_CTL); 6339 ctl_set_param_len_error(ctsio); 6340 ctl_done((union ctl_io *)ctsio); 6341 return (CTL_RETVAL_COMPLETE); 6342 6343 } else if ((page_header->page_code & SMPH_SPF) 6344 && (*len_left < sizeof(struct scsi_mode_page_header_sp))) { 6345 6346 free(ctsio->kern_data_ptr, M_CTL); 6347 ctl_set_param_len_error(ctsio); 6348 ctl_done((union ctl_io *)ctsio); 6349 return (CTL_RETVAL_COMPLETE); 6350 } 6351 6352 6353 /* 6354 * XXX KDM should we do something with the block descriptor? 6355 */ 6356 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6357 6358 if ((control_dev != 0) 6359 && (lun->mode_pages.index[i].page_flags & 6360 CTL_PAGE_FLAG_DISK_ONLY)) 6361 continue; 6362 6363 if ((lun->mode_pages.index[i].page_code & SMPH_PC_MASK) != 6364 (page_header->page_code & SMPH_PC_MASK)) 6365 continue; 6366 6367 /* 6368 * If neither page has a subpage code, then we've got a 6369 * match. 6370 */ 6371 if (((lun->mode_pages.index[i].page_code & SMPH_SPF) == 0) 6372 && ((page_header->page_code & SMPH_SPF) == 0)) { 6373 page_index = &lun->mode_pages.index[i]; 6374 page_len = page_header->page_length; 6375 break; 6376 } 6377 6378 /* 6379 * If both pages have subpages, then the subpage numbers 6380 * have to match. 6381 */ 6382 if ((lun->mode_pages.index[i].page_code & SMPH_SPF) 6383 && (page_header->page_code & SMPH_SPF)) { 6384 struct scsi_mode_page_header_sp *sph; 6385 6386 sph = (struct scsi_mode_page_header_sp *)page_header; 6387 6388 if (lun->mode_pages.index[i].subpage == 6389 sph->subpage) { 6390 page_index = &lun->mode_pages.index[i]; 6391 page_len = scsi_2btoul(sph->page_length); 6392 break; 6393 } 6394 } 6395 } 6396 6397 /* 6398 * If we couldn't find the page, or if we don't have a mode select 6399 * handler for it, send back an error to the user. 6400 */ 6401 if ((page_index == NULL) 6402 || (page_index->select_handler == NULL)) { 6403 ctl_set_invalid_field(ctsio, 6404 /*sks_valid*/ 1, 6405 /*command*/ 0, 6406 /*field*/ *len_used, 6407 /*bit_valid*/ 0, 6408 /*bit*/ 0); 6409 free(ctsio->kern_data_ptr, M_CTL); 6410 ctl_done((union ctl_io *)ctsio); 6411 return (CTL_RETVAL_COMPLETE); 6412 } 6413 6414 if (page_index->page_code & SMPH_SPF) { 6415 page_len_offset = 2; 6416 page_len_size = 2; 6417 } else { 6418 page_len_size = 1; 6419 page_len_offset = 1; 6420 } 6421 6422 /* 6423 * If the length the initiator gives us isn't the one we specify in 6424 * the mode page header, or if they didn't specify enough data in 6425 * the CDB to avoid truncating this page, kick out the request. 6426 */ 6427 if ((page_len != (page_index->page_len - page_len_offset - 6428 page_len_size)) 6429 || (*len_left < page_index->page_len)) { 6430 6431 6432 ctl_set_invalid_field(ctsio, 6433 /*sks_valid*/ 1, 6434 /*command*/ 0, 6435 /*field*/ *len_used + page_len_offset, 6436 /*bit_valid*/ 0, 6437 /*bit*/ 0); 6438 free(ctsio->kern_data_ptr, M_CTL); 6439 ctl_done((union ctl_io *)ctsio); 6440 return (CTL_RETVAL_COMPLETE); 6441 } 6442 6443 /* 6444 * Run through the mode page, checking to make sure that the bits 6445 * the user changed are actually legal for him to change. 6446 */ 6447 for (i = 0; i < page_index->page_len; i++) { 6448 uint8_t *user_byte, *change_mask, *current_byte; 6449 int bad_bit; 6450 int j; 6451 6452 user_byte = (uint8_t *)page_header + i; 6453 change_mask = page_index->page_data + 6454 (page_index->page_len * CTL_PAGE_CHANGEABLE) + i; 6455 current_byte = page_index->page_data + 6456 (page_index->page_len * CTL_PAGE_CURRENT) + i; 6457 6458 /* 6459 * Check to see whether the user set any bits in this byte 6460 * that he is not allowed to set. 6461 */ 6462 if ((*user_byte & ~(*change_mask)) == 6463 (*current_byte & ~(*change_mask))) 6464 continue; 6465 6466 /* 6467 * Go through bit by bit to determine which one is illegal. 6468 */ 6469 bad_bit = 0; 6470 for (j = 7; j >= 0; j--) { 6471 if ((((1 << i) & ~(*change_mask)) & *user_byte) != 6472 (((1 << i) & ~(*change_mask)) & *current_byte)) { 6473 bad_bit = i; 6474 break; 6475 } 6476 } 6477 ctl_set_invalid_field(ctsio, 6478 /*sks_valid*/ 1, 6479 /*command*/ 0, 6480 /*field*/ *len_used + i, 6481 /*bit_valid*/ 1, 6482 /*bit*/ bad_bit); 6483 free(ctsio->kern_data_ptr, M_CTL); 6484 ctl_done((union ctl_io *)ctsio); 6485 return (CTL_RETVAL_COMPLETE); 6486 } 6487 6488 /* 6489 * Decrement these before we call the page handler, since we may 6490 * end up getting called back one way or another before the handler 6491 * returns to this context. 6492 */ 6493 *len_left -= page_index->page_len; 6494 *len_used += page_index->page_len; 6495 6496 retval = page_index->select_handler(ctsio, page_index, 6497 (uint8_t *)page_header); 6498 6499 /* 6500 * If the page handler returns CTL_RETVAL_QUEUED, then we need to 6501 * wait until this queued command completes to finish processing 6502 * the mode page. If it returns anything other than 6503 * CTL_RETVAL_COMPLETE (e.g. CTL_RETVAL_ERROR), then it should have 6504 * already set the sense information, freed the data pointer, and 6505 * completed the io for us. 6506 */ 6507 if (retval != CTL_RETVAL_COMPLETE) 6508 goto bailout_no_done; 6509 6510 /* 6511 * If the initiator sent us more than one page, parse the next one. 6512 */ 6513 if (*len_left > 0) 6514 goto do_next_page; 6515 6516 ctl_set_success(ctsio); 6517 free(ctsio->kern_data_ptr, M_CTL); 6518 ctl_done((union ctl_io *)ctsio); 6519 6520bailout_no_done: 6521 6522 return (CTL_RETVAL_COMPLETE); 6523 6524} 6525 6526int 6527ctl_mode_select(struct ctl_scsiio *ctsio) 6528{ 6529 int param_len, pf, sp; 6530 int header_size, bd_len; 6531 int len_left, len_used; 6532 struct ctl_page_index *page_index; 6533 struct ctl_lun *lun; 6534 int control_dev, page_len; 6535 union ctl_modepage_info *modepage_info; 6536 int retval; 6537 6538 pf = 0; 6539 sp = 0; 6540 page_len = 0; 6541 len_used = 0; 6542 len_left = 0; 6543 retval = 0; 6544 bd_len = 0; 6545 page_index = NULL; 6546 6547 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6548 6549 if (lun->be_lun->lun_type != T_DIRECT) 6550 control_dev = 1; 6551 else 6552 control_dev = 0; 6553 6554 switch (ctsio->cdb[0]) { 6555 case MODE_SELECT_6: { 6556 struct scsi_mode_select_6 *cdb; 6557 6558 cdb = (struct scsi_mode_select_6 *)ctsio->cdb; 6559 6560 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6561 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6562 6563 param_len = cdb->length; 6564 header_size = sizeof(struct scsi_mode_header_6); 6565 break; 6566 } 6567 case MODE_SELECT_10: { 6568 struct scsi_mode_select_10 *cdb; 6569 6570 cdb = (struct scsi_mode_select_10 *)ctsio->cdb; 6571 6572 pf = (cdb->byte2 & SMS_PF) ? 1 : 0; 6573 sp = (cdb->byte2 & SMS_SP) ? 1 : 0; 6574 6575 param_len = scsi_2btoul(cdb->length); 6576 header_size = sizeof(struct scsi_mode_header_10); 6577 break; 6578 } 6579 default: 6580 ctl_set_invalid_opcode(ctsio); 6581 ctl_done((union ctl_io *)ctsio); 6582 return (CTL_RETVAL_COMPLETE); 6583 break; /* NOTREACHED */ 6584 } 6585 6586 /* 6587 * From SPC-3: 6588 * "A parameter list length of zero indicates that the Data-Out Buffer 6589 * shall be empty. This condition shall not be considered as an error." 6590 */ 6591 if (param_len == 0) { 6592 ctl_set_success(ctsio); 6593 ctl_done((union ctl_io *)ctsio); 6594 return (CTL_RETVAL_COMPLETE); 6595 } 6596 6597 /* 6598 * Since we'll hit this the first time through, prior to 6599 * allocation, we don't need to free a data buffer here. 6600 */ 6601 if (param_len < header_size) { 6602 ctl_set_param_len_error(ctsio); 6603 ctl_done((union ctl_io *)ctsio); 6604 return (CTL_RETVAL_COMPLETE); 6605 } 6606 6607 /* 6608 * Allocate the data buffer and grab the user's data. In theory, 6609 * we shouldn't have to sanity check the parameter list length here 6610 * because the maximum size is 64K. We should be able to malloc 6611 * that much without too many problems. 6612 */ 6613 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 6614 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 6615 ctsio->kern_data_len = param_len; 6616 ctsio->kern_total_len = param_len; 6617 ctsio->kern_data_resid = 0; 6618 ctsio->kern_rel_offset = 0; 6619 ctsio->kern_sg_entries = 0; 6620 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 6621 ctsio->be_move_done = ctl_config_move_done; 6622 ctl_datamove((union ctl_io *)ctsio); 6623 6624 return (CTL_RETVAL_COMPLETE); 6625 } 6626 6627 switch (ctsio->cdb[0]) { 6628 case MODE_SELECT_6: { 6629 struct scsi_mode_header_6 *mh6; 6630 6631 mh6 = (struct scsi_mode_header_6 *)ctsio->kern_data_ptr; 6632 bd_len = mh6->blk_desc_len; 6633 break; 6634 } 6635 case MODE_SELECT_10: { 6636 struct scsi_mode_header_10 *mh10; 6637 6638 mh10 = (struct scsi_mode_header_10 *)ctsio->kern_data_ptr; 6639 bd_len = scsi_2btoul(mh10->blk_desc_len); 6640 break; 6641 } 6642 default: 6643 panic("Invalid CDB type %#x", ctsio->cdb[0]); 6644 break; 6645 } 6646 6647 if (param_len < (header_size + bd_len)) { 6648 free(ctsio->kern_data_ptr, M_CTL); 6649 ctl_set_param_len_error(ctsio); 6650 ctl_done((union ctl_io *)ctsio); 6651 return (CTL_RETVAL_COMPLETE); 6652 } 6653 6654 /* 6655 * Set the IO_CONT flag, so that if this I/O gets passed to 6656 * ctl_config_write_done(), it'll get passed back to 6657 * ctl_do_mode_select() for further processing, or completion if 6658 * we're all done. 6659 */ 6660 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 6661 ctsio->io_cont = ctl_do_mode_select; 6662 6663 modepage_info = (union ctl_modepage_info *) 6664 ctsio->io_hdr.ctl_private[CTL_PRIV_MODEPAGE].bytes; 6665 6666 memset(modepage_info, 0, sizeof(*modepage_info)); 6667 6668 len_left = param_len - header_size - bd_len; 6669 len_used = header_size + bd_len; 6670 6671 modepage_info->header.len_left = len_left; 6672 modepage_info->header.len_used = len_used; 6673 6674 return (ctl_do_mode_select((union ctl_io *)ctsio)); 6675} 6676 6677int 6678ctl_mode_sense(struct ctl_scsiio *ctsio) 6679{ 6680 struct ctl_lun *lun; 6681 int pc, page_code, dbd, llba, subpage; 6682 int alloc_len, page_len, header_len, total_len; 6683 struct scsi_mode_block_descr *block_desc; 6684 struct ctl_page_index *page_index; 6685 int control_dev; 6686 6687 dbd = 0; 6688 llba = 0; 6689 block_desc = NULL; 6690 page_index = NULL; 6691 6692 CTL_DEBUG_PRINT(("ctl_mode_sense\n")); 6693 6694 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 6695 6696 if (lun->be_lun->lun_type != T_DIRECT) 6697 control_dev = 1; 6698 else 6699 control_dev = 0; 6700 6701 if (lun->flags & CTL_LUN_PR_RESERVED) { 6702 uint32_t residx; 6703 6704 /* 6705 * XXX KDM need a lock here. 6706 */ 6707 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 6708 if ((lun->res_type == SPR_TYPE_EX_AC 6709 && residx != lun->pr_res_idx) 6710 || ((lun->res_type == SPR_TYPE_EX_AC_RO 6711 || lun->res_type == SPR_TYPE_EX_AC_AR) 6712 && !lun->per_res[residx].registered)) { 6713 ctl_set_reservation_conflict(ctsio); 6714 ctl_done((union ctl_io *)ctsio); 6715 return (CTL_RETVAL_COMPLETE); 6716 } 6717 } 6718 6719 switch (ctsio->cdb[0]) { 6720 case MODE_SENSE_6: { 6721 struct scsi_mode_sense_6 *cdb; 6722 6723 cdb = (struct scsi_mode_sense_6 *)ctsio->cdb; 6724 6725 header_len = sizeof(struct scsi_mode_hdr_6); 6726 if (cdb->byte2 & SMS_DBD) 6727 dbd = 1; 6728 else 6729 header_len += sizeof(struct scsi_mode_block_descr); 6730 6731 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6732 page_code = cdb->page & SMS_PAGE_CODE; 6733 subpage = cdb->subpage; 6734 alloc_len = cdb->length; 6735 break; 6736 } 6737 case MODE_SENSE_10: { 6738 struct scsi_mode_sense_10 *cdb; 6739 6740 cdb = (struct scsi_mode_sense_10 *)ctsio->cdb; 6741 6742 header_len = sizeof(struct scsi_mode_hdr_10); 6743 6744 if (cdb->byte2 & SMS_DBD) 6745 dbd = 1; 6746 else 6747 header_len += sizeof(struct scsi_mode_block_descr); 6748 if (cdb->byte2 & SMS10_LLBAA) 6749 llba = 1; 6750 pc = (cdb->page & SMS_PAGE_CTRL_MASK) >> 6; 6751 page_code = cdb->page & SMS_PAGE_CODE; 6752 subpage = cdb->subpage; 6753 alloc_len = scsi_2btoul(cdb->length); 6754 break; 6755 } 6756 default: 6757 ctl_set_invalid_opcode(ctsio); 6758 ctl_done((union ctl_io *)ctsio); 6759 return (CTL_RETVAL_COMPLETE); 6760 break; /* NOTREACHED */ 6761 } 6762 6763 /* 6764 * We have to make a first pass through to calculate the size of 6765 * the pages that match the user's query. Then we allocate enough 6766 * memory to hold it, and actually copy the data into the buffer. 6767 */ 6768 switch (page_code) { 6769 case SMS_ALL_PAGES_PAGE: { 6770 int i; 6771 6772 page_len = 0; 6773 6774 /* 6775 * At the moment, values other than 0 and 0xff here are 6776 * reserved according to SPC-3. 6777 */ 6778 if ((subpage != SMS_SUBPAGE_PAGE_0) 6779 && (subpage != SMS_SUBPAGE_ALL)) { 6780 ctl_set_invalid_field(ctsio, 6781 /*sks_valid*/ 1, 6782 /*command*/ 1, 6783 /*field*/ 3, 6784 /*bit_valid*/ 0, 6785 /*bit*/ 0); 6786 ctl_done((union ctl_io *)ctsio); 6787 return (CTL_RETVAL_COMPLETE); 6788 } 6789 6790 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6791 if ((control_dev != 0) 6792 && (lun->mode_pages.index[i].page_flags & 6793 CTL_PAGE_FLAG_DISK_ONLY)) 6794 continue; 6795 6796 /* 6797 * We don't use this subpage if the user didn't 6798 * request all subpages. 6799 */ 6800 if ((lun->mode_pages.index[i].subpage != 0) 6801 && (subpage == SMS_SUBPAGE_PAGE_0)) 6802 continue; 6803 6804#if 0 6805 printf("found page %#x len %d\n", 6806 lun->mode_pages.index[i].page_code & 6807 SMPH_PC_MASK, 6808 lun->mode_pages.index[i].page_len); 6809#endif 6810 page_len += lun->mode_pages.index[i].page_len; 6811 } 6812 break; 6813 } 6814 default: { 6815 int i; 6816 6817 page_len = 0; 6818 6819 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6820 /* Look for the right page code */ 6821 if ((lun->mode_pages.index[i].page_code & 6822 SMPH_PC_MASK) != page_code) 6823 continue; 6824 6825 /* Look for the right subpage or the subpage wildcard*/ 6826 if ((lun->mode_pages.index[i].subpage != subpage) 6827 && (subpage != SMS_SUBPAGE_ALL)) 6828 continue; 6829 6830 /* Make sure the page is supported for this dev type */ 6831 if ((control_dev != 0) 6832 && (lun->mode_pages.index[i].page_flags & 6833 CTL_PAGE_FLAG_DISK_ONLY)) 6834 continue; 6835 6836#if 0 6837 printf("found page %#x len %d\n", 6838 lun->mode_pages.index[i].page_code & 6839 SMPH_PC_MASK, 6840 lun->mode_pages.index[i].page_len); 6841#endif 6842 6843 page_len += lun->mode_pages.index[i].page_len; 6844 } 6845 6846 if (page_len == 0) { 6847 ctl_set_invalid_field(ctsio, 6848 /*sks_valid*/ 1, 6849 /*command*/ 1, 6850 /*field*/ 2, 6851 /*bit_valid*/ 1, 6852 /*bit*/ 5); 6853 ctl_done((union ctl_io *)ctsio); 6854 return (CTL_RETVAL_COMPLETE); 6855 } 6856 break; 6857 } 6858 } 6859 6860 total_len = header_len + page_len; 6861#if 0 6862 printf("header_len = %d, page_len = %d, total_len = %d\n", 6863 header_len, page_len, total_len); 6864#endif 6865 6866 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 6867 ctsio->kern_sg_entries = 0; 6868 ctsio->kern_data_resid = 0; 6869 ctsio->kern_rel_offset = 0; 6870 if (total_len < alloc_len) { 6871 ctsio->residual = alloc_len - total_len; 6872 ctsio->kern_data_len = total_len; 6873 ctsio->kern_total_len = total_len; 6874 } else { 6875 ctsio->residual = 0; 6876 ctsio->kern_data_len = alloc_len; 6877 ctsio->kern_total_len = alloc_len; 6878 } 6879 6880 switch (ctsio->cdb[0]) { 6881 case MODE_SENSE_6: { 6882 struct scsi_mode_hdr_6 *header; 6883 6884 header = (struct scsi_mode_hdr_6 *)ctsio->kern_data_ptr; 6885 6886 header->datalen = ctl_min(total_len - 1, 254); 6887 6888 if (dbd) 6889 header->block_descr_len = 0; 6890 else 6891 header->block_descr_len = 6892 sizeof(struct scsi_mode_block_descr); 6893 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6894 break; 6895 } 6896 case MODE_SENSE_10: { 6897 struct scsi_mode_hdr_10 *header; 6898 int datalen; 6899 6900 header = (struct scsi_mode_hdr_10 *)ctsio->kern_data_ptr; 6901 6902 datalen = ctl_min(total_len - 2, 65533); 6903 scsi_ulto2b(datalen, header->datalen); 6904 if (dbd) 6905 scsi_ulto2b(0, header->block_descr_len); 6906 else 6907 scsi_ulto2b(sizeof(struct scsi_mode_block_descr), 6908 header->block_descr_len); 6909 block_desc = (struct scsi_mode_block_descr *)&header[1]; 6910 break; 6911 } 6912 default: 6913 panic("invalid CDB type %#x", ctsio->cdb[0]); 6914 break; /* NOTREACHED */ 6915 } 6916 6917 /* 6918 * If we've got a disk, use its blocksize in the block 6919 * descriptor. Otherwise, just set it to 0. 6920 */ 6921 if (dbd == 0) { 6922 if (control_dev != 0) 6923 scsi_ulto3b(lun->be_lun->blocksize, 6924 block_desc->block_len); 6925 else 6926 scsi_ulto3b(0, block_desc->block_len); 6927 } 6928 6929 switch (page_code) { 6930 case SMS_ALL_PAGES_PAGE: { 6931 int i, data_used; 6932 6933 data_used = header_len; 6934 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6935 struct ctl_page_index *page_index; 6936 6937 page_index = &lun->mode_pages.index[i]; 6938 6939 if ((control_dev != 0) 6940 && (page_index->page_flags & 6941 CTL_PAGE_FLAG_DISK_ONLY)) 6942 continue; 6943 6944 /* 6945 * We don't use this subpage if the user didn't 6946 * request all subpages. We already checked (above) 6947 * to make sure the user only specified a subpage 6948 * of 0 or 0xff in the SMS_ALL_PAGES_PAGE case. 6949 */ 6950 if ((page_index->subpage != 0) 6951 && (subpage == SMS_SUBPAGE_PAGE_0)) 6952 continue; 6953 6954 /* 6955 * Call the handler, if it exists, to update the 6956 * page to the latest values. 6957 */ 6958 if (page_index->sense_handler != NULL) 6959 page_index->sense_handler(ctsio, page_index,pc); 6960 6961 memcpy(ctsio->kern_data_ptr + data_used, 6962 page_index->page_data + 6963 (page_index->page_len * pc), 6964 page_index->page_len); 6965 data_used += page_index->page_len; 6966 } 6967 break; 6968 } 6969 default: { 6970 int i, data_used; 6971 6972 data_used = header_len; 6973 6974 for (i = 0; i < CTL_NUM_MODE_PAGES; i++) { 6975 struct ctl_page_index *page_index; 6976 6977 page_index = &lun->mode_pages.index[i]; 6978 6979 /* Look for the right page code */ 6980 if ((page_index->page_code & SMPH_PC_MASK) != page_code) 6981 continue; 6982 6983 /* Look for the right subpage or the subpage wildcard*/ 6984 if ((page_index->subpage != subpage) 6985 && (subpage != SMS_SUBPAGE_ALL)) 6986 continue; 6987 6988 /* Make sure the page is supported for this dev type */ 6989 if ((control_dev != 0) 6990 && (page_index->page_flags & 6991 CTL_PAGE_FLAG_DISK_ONLY)) 6992 continue; 6993 6994 /* 6995 * Call the handler, if it exists, to update the 6996 * page to the latest values. 6997 */ 6998 if (page_index->sense_handler != NULL) 6999 page_index->sense_handler(ctsio, page_index,pc); 7000 7001 memcpy(ctsio->kern_data_ptr + data_used, 7002 page_index->page_data + 7003 (page_index->page_len * pc), 7004 page_index->page_len); 7005 data_used += page_index->page_len; 7006 } 7007 break; 7008 } 7009 } 7010 7011 ctsio->scsi_status = SCSI_STATUS_OK; 7012 7013 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7014 ctsio->be_move_done = ctl_config_move_done; 7015 ctl_datamove((union ctl_io *)ctsio); 7016 7017 return (CTL_RETVAL_COMPLETE); 7018} 7019 7020int 7021ctl_read_capacity(struct ctl_scsiio *ctsio) 7022{ 7023 struct scsi_read_capacity *cdb; 7024 struct scsi_read_capacity_data *data; 7025 struct ctl_lun *lun; 7026 uint32_t lba; 7027 7028 CTL_DEBUG_PRINT(("ctl_read_capacity\n")); 7029 7030 cdb = (struct scsi_read_capacity *)ctsio->cdb; 7031 7032 lba = scsi_4btoul(cdb->addr); 7033 if (((cdb->pmi & SRC_PMI) == 0) 7034 && (lba != 0)) { 7035 ctl_set_invalid_field(/*ctsio*/ ctsio, 7036 /*sks_valid*/ 1, 7037 /*command*/ 1, 7038 /*field*/ 2, 7039 /*bit_valid*/ 0, 7040 /*bit*/ 0); 7041 ctl_done((union ctl_io *)ctsio); 7042 return (CTL_RETVAL_COMPLETE); 7043 } 7044 7045 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7046 7047 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7048 data = (struct scsi_read_capacity_data *)ctsio->kern_data_ptr; 7049 ctsio->residual = 0; 7050 ctsio->kern_data_len = sizeof(*data); 7051 ctsio->kern_total_len = sizeof(*data); 7052 ctsio->kern_data_resid = 0; 7053 ctsio->kern_rel_offset = 0; 7054 ctsio->kern_sg_entries = 0; 7055 7056 /* 7057 * If the maximum LBA is greater than 0xfffffffe, the user must 7058 * issue a SERVICE ACTION IN (16) command, with the read capacity 7059 * serivce action set. 7060 */ 7061 if (lun->be_lun->maxlba > 0xfffffffe) 7062 scsi_ulto4b(0xffffffff, data->addr); 7063 else 7064 scsi_ulto4b(lun->be_lun->maxlba, data->addr); 7065 7066 /* 7067 * XXX KDM this may not be 512 bytes... 7068 */ 7069 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7070 7071 ctsio->scsi_status = SCSI_STATUS_OK; 7072 7073 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7074 ctsio->be_move_done = ctl_config_move_done; 7075 ctl_datamove((union ctl_io *)ctsio); 7076 7077 return (CTL_RETVAL_COMPLETE); 7078} 7079 7080int 7081ctl_read_capacity_16(struct ctl_scsiio *ctsio) 7082{ 7083 struct scsi_read_capacity_16 *cdb; 7084 struct scsi_read_capacity_data_long *data; 7085 struct ctl_lun *lun; 7086 uint64_t lba; 7087 uint32_t alloc_len; 7088 7089 CTL_DEBUG_PRINT(("ctl_read_capacity_16\n")); 7090 7091 cdb = (struct scsi_read_capacity_16 *)ctsio->cdb; 7092 7093 alloc_len = scsi_4btoul(cdb->alloc_len); 7094 lba = scsi_8btou64(cdb->addr); 7095 7096 if ((cdb->reladr & SRC16_PMI) 7097 && (lba != 0)) { 7098 ctl_set_invalid_field(/*ctsio*/ ctsio, 7099 /*sks_valid*/ 1, 7100 /*command*/ 1, 7101 /*field*/ 2, 7102 /*bit_valid*/ 0, 7103 /*bit*/ 0); 7104 ctl_done((union ctl_io *)ctsio); 7105 return (CTL_RETVAL_COMPLETE); 7106 } 7107 7108 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7109 7110 ctsio->kern_data_ptr = malloc(sizeof(*data), M_CTL, M_WAITOK | M_ZERO); 7111 data = (struct scsi_read_capacity_data_long *)ctsio->kern_data_ptr; 7112 7113 if (sizeof(*data) < alloc_len) { 7114 ctsio->residual = alloc_len - sizeof(*data); 7115 ctsio->kern_data_len = sizeof(*data); 7116 ctsio->kern_total_len = sizeof(*data); 7117 } else { 7118 ctsio->residual = 0; 7119 ctsio->kern_data_len = alloc_len; 7120 ctsio->kern_total_len = alloc_len; 7121 } 7122 ctsio->kern_data_resid = 0; 7123 ctsio->kern_rel_offset = 0; 7124 ctsio->kern_sg_entries = 0; 7125 7126 scsi_u64to8b(lun->be_lun->maxlba, data->addr); 7127 /* XXX KDM this may not be 512 bytes... */ 7128 scsi_ulto4b(lun->be_lun->blocksize, data->length); 7129 data->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE; 7130 scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, data->lalba_lbp); 7131 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 7132 data->lalba_lbp[0] |= SRC16_LBPME; 7133 7134 ctsio->scsi_status = SCSI_STATUS_OK; 7135 7136 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7137 ctsio->be_move_done = ctl_config_move_done; 7138 ctl_datamove((union ctl_io *)ctsio); 7139 7140 return (CTL_RETVAL_COMPLETE); 7141} 7142 7143int 7144ctl_report_tagret_port_groups(struct ctl_scsiio *ctsio) 7145{ 7146 struct scsi_maintenance_in *cdb; 7147 int retval; 7148 int alloc_len, ext, total_len = 0, g, p, pc, pg; 7149 int num_target_port_groups, num_target_ports, single; 7150 struct ctl_lun *lun; 7151 struct ctl_softc *softc; 7152 struct ctl_port *port; 7153 struct scsi_target_group_data *rtg_ptr; 7154 struct scsi_target_group_data_extended *rtg_ext_ptr; 7155 struct scsi_target_port_group_descriptor *tpg_desc; 7156 7157 CTL_DEBUG_PRINT(("ctl_report_tagret_port_groups\n")); 7158 7159 cdb = (struct scsi_maintenance_in *)ctsio->cdb; 7160 softc = control_softc; 7161 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7162 7163 retval = CTL_RETVAL_COMPLETE; 7164 7165 switch (cdb->byte2 & STG_PDF_MASK) { 7166 case STG_PDF_LENGTH: 7167 ext = 0; 7168 break; 7169 case STG_PDF_EXTENDED: 7170 ext = 1; 7171 break; 7172 default: 7173 ctl_set_invalid_field(/*ctsio*/ ctsio, 7174 /*sks_valid*/ 1, 7175 /*command*/ 1, 7176 /*field*/ 2, 7177 /*bit_valid*/ 1, 7178 /*bit*/ 5); 7179 ctl_done((union ctl_io *)ctsio); 7180 return(retval); 7181 } 7182 7183 single = ctl_is_single; 7184 if (single) 7185 num_target_port_groups = 1; 7186 else 7187 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 7188 num_target_ports = 0; 7189 mtx_lock(&softc->ctl_lock); 7190 STAILQ_FOREACH(port, &softc->port_list, links) { 7191 if ((port->status & CTL_PORT_STATUS_ONLINE) == 0) 7192 continue; 7193 if (ctl_map_lun_back(port->targ_port, lun->lun) >= CTL_MAX_LUNS) 7194 continue; 7195 num_target_ports++; 7196 } 7197 mtx_unlock(&softc->ctl_lock); 7198 7199 if (ext) 7200 total_len = sizeof(struct scsi_target_group_data_extended); 7201 else 7202 total_len = sizeof(struct scsi_target_group_data); 7203 total_len += sizeof(struct scsi_target_port_group_descriptor) * 7204 num_target_port_groups + 7205 sizeof(struct scsi_target_port_descriptor) * 7206 num_target_ports * num_target_port_groups; 7207 7208 alloc_len = scsi_4btoul(cdb->length); 7209 7210 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7211 7212 ctsio->kern_sg_entries = 0; 7213 7214 if (total_len < alloc_len) { 7215 ctsio->residual = alloc_len - total_len; 7216 ctsio->kern_data_len = total_len; 7217 ctsio->kern_total_len = total_len; 7218 } else { 7219 ctsio->residual = 0; 7220 ctsio->kern_data_len = alloc_len; 7221 ctsio->kern_total_len = alloc_len; 7222 } 7223 ctsio->kern_data_resid = 0; 7224 ctsio->kern_rel_offset = 0; 7225 7226 if (ext) { 7227 rtg_ext_ptr = (struct scsi_target_group_data_extended *) 7228 ctsio->kern_data_ptr; 7229 scsi_ulto4b(total_len - 4, rtg_ext_ptr->length); 7230 rtg_ext_ptr->format_type = 0x10; 7231 rtg_ext_ptr->implicit_transition_time = 0; 7232 tpg_desc = &rtg_ext_ptr->groups[0]; 7233 } else { 7234 rtg_ptr = (struct scsi_target_group_data *) 7235 ctsio->kern_data_ptr; 7236 scsi_ulto4b(total_len - 4, rtg_ptr->length); 7237 tpg_desc = &rtg_ptr->groups[0]; 7238 } 7239 7240 pg = ctsio->io_hdr.nexus.targ_port / CTL_MAX_PORTS; 7241 mtx_lock(&softc->ctl_lock); 7242 for (g = 0; g < num_target_port_groups; g++) { 7243 if (g == pg) 7244 tpg_desc->pref_state = TPG_PRIMARY | 7245 TPG_ASYMMETRIC_ACCESS_OPTIMIZED; 7246 else 7247 tpg_desc->pref_state = 7248 TPG_ASYMMETRIC_ACCESS_NONOPTIMIZED; 7249 tpg_desc->support = TPG_AO_SUP; 7250 if (!single) 7251 tpg_desc->support |= TPG_AN_SUP; 7252 scsi_ulto2b(g + 1, tpg_desc->target_port_group); 7253 tpg_desc->status = TPG_IMPLICIT; 7254 pc = 0; 7255 STAILQ_FOREACH(port, &softc->port_list, links) { 7256 if ((port->status & CTL_PORT_STATUS_ONLINE) == 0) 7257 continue; 7258 if (ctl_map_lun_back(port->targ_port, lun->lun) >= 7259 CTL_MAX_LUNS) 7260 continue; 7261 p = port->targ_port % CTL_MAX_PORTS + g * CTL_MAX_PORTS; 7262 scsi_ulto2b(p, tpg_desc->descriptors[pc]. 7263 relative_target_port_identifier); 7264 pc++; 7265 } 7266 tpg_desc->target_port_count = pc; 7267 tpg_desc = (struct scsi_target_port_group_descriptor *) 7268 &tpg_desc->descriptors[pc]; 7269 } 7270 mtx_unlock(&softc->ctl_lock); 7271 7272 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7273 ctsio->be_move_done = ctl_config_move_done; 7274 7275 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7276 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7277 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7278 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7279 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7280 7281 ctl_datamove((union ctl_io *)ctsio); 7282 return(retval); 7283} 7284 7285int 7286ctl_report_supported_opcodes(struct ctl_scsiio *ctsio) 7287{ 7288 struct ctl_lun *lun; 7289 struct scsi_report_supported_opcodes *cdb; 7290 const struct ctl_cmd_entry *entry, *sentry; 7291 struct scsi_report_supported_opcodes_all *all; 7292 struct scsi_report_supported_opcodes_descr *descr; 7293 struct scsi_report_supported_opcodes_one *one; 7294 int retval; 7295 int alloc_len, total_len; 7296 int opcode, service_action, i, j, num; 7297 7298 CTL_DEBUG_PRINT(("ctl_report_supported_opcodes\n")); 7299 7300 cdb = (struct scsi_report_supported_opcodes *)ctsio->cdb; 7301 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7302 7303 retval = CTL_RETVAL_COMPLETE; 7304 7305 opcode = cdb->requested_opcode; 7306 service_action = scsi_2btoul(cdb->requested_service_action); 7307 switch (cdb->options & RSO_OPTIONS_MASK) { 7308 case RSO_OPTIONS_ALL: 7309 num = 0; 7310 for (i = 0; i < 256; i++) { 7311 entry = &ctl_cmd_table[i]; 7312 if (entry->flags & CTL_CMD_FLAG_SA5) { 7313 for (j = 0; j < 32; j++) { 7314 sentry = &((const struct ctl_cmd_entry *) 7315 entry->execute)[j]; 7316 if (ctl_cmd_applicable( 7317 lun->be_lun->lun_type, sentry)) 7318 num++; 7319 } 7320 } else { 7321 if (ctl_cmd_applicable(lun->be_lun->lun_type, 7322 entry)) 7323 num++; 7324 } 7325 } 7326 total_len = sizeof(struct scsi_report_supported_opcodes_all) + 7327 num * sizeof(struct scsi_report_supported_opcodes_descr); 7328 break; 7329 case RSO_OPTIONS_OC: 7330 if (ctl_cmd_table[opcode].flags & CTL_CMD_FLAG_SA5) { 7331 ctl_set_invalid_field(/*ctsio*/ ctsio, 7332 /*sks_valid*/ 1, 7333 /*command*/ 1, 7334 /*field*/ 2, 7335 /*bit_valid*/ 1, 7336 /*bit*/ 2); 7337 ctl_done((union ctl_io *)ctsio); 7338 return (CTL_RETVAL_COMPLETE); 7339 } 7340 total_len = sizeof(struct scsi_report_supported_opcodes_one) + 32; 7341 break; 7342 case RSO_OPTIONS_OC_SA: 7343 if ((ctl_cmd_table[opcode].flags & CTL_CMD_FLAG_SA5) == 0 || 7344 service_action >= 32) { 7345 ctl_set_invalid_field(/*ctsio*/ ctsio, 7346 /*sks_valid*/ 1, 7347 /*command*/ 1, 7348 /*field*/ 2, 7349 /*bit_valid*/ 1, 7350 /*bit*/ 2); 7351 ctl_done((union ctl_io *)ctsio); 7352 return (CTL_RETVAL_COMPLETE); 7353 } 7354 total_len = sizeof(struct scsi_report_supported_opcodes_one) + 32; 7355 break; 7356 default: 7357 ctl_set_invalid_field(/*ctsio*/ ctsio, 7358 /*sks_valid*/ 1, 7359 /*command*/ 1, 7360 /*field*/ 2, 7361 /*bit_valid*/ 1, 7362 /*bit*/ 2); 7363 ctl_done((union ctl_io *)ctsio); 7364 return (CTL_RETVAL_COMPLETE); 7365 } 7366 7367 alloc_len = scsi_4btoul(cdb->length); 7368 7369 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7370 7371 ctsio->kern_sg_entries = 0; 7372 7373 if (total_len < alloc_len) { 7374 ctsio->residual = alloc_len - total_len; 7375 ctsio->kern_data_len = total_len; 7376 ctsio->kern_total_len = total_len; 7377 } else { 7378 ctsio->residual = 0; 7379 ctsio->kern_data_len = alloc_len; 7380 ctsio->kern_total_len = alloc_len; 7381 } 7382 ctsio->kern_data_resid = 0; 7383 ctsio->kern_rel_offset = 0; 7384 7385 switch (cdb->options & RSO_OPTIONS_MASK) { 7386 case RSO_OPTIONS_ALL: 7387 all = (struct scsi_report_supported_opcodes_all *) 7388 ctsio->kern_data_ptr; 7389 num = 0; 7390 for (i = 0; i < 256; i++) { 7391 entry = &ctl_cmd_table[i]; 7392 if (entry->flags & CTL_CMD_FLAG_SA5) { 7393 for (j = 0; j < 32; j++) { 7394 sentry = &((const struct ctl_cmd_entry *) 7395 entry->execute)[j]; 7396 if (!ctl_cmd_applicable( 7397 lun->be_lun->lun_type, sentry)) 7398 continue; 7399 descr = &all->descr[num++]; 7400 descr->opcode = i; 7401 scsi_ulto2b(j, descr->service_action); 7402 descr->flags = RSO_SERVACTV; 7403 scsi_ulto2b(sentry->length, 7404 descr->cdb_length); 7405 } 7406 } else { 7407 if (!ctl_cmd_applicable(lun->be_lun->lun_type, 7408 entry)) 7409 continue; 7410 descr = &all->descr[num++]; 7411 descr->opcode = i; 7412 scsi_ulto2b(0, descr->service_action); 7413 descr->flags = 0; 7414 scsi_ulto2b(entry->length, descr->cdb_length); 7415 } 7416 } 7417 scsi_ulto4b( 7418 num * sizeof(struct scsi_report_supported_opcodes_descr), 7419 all->length); 7420 break; 7421 case RSO_OPTIONS_OC: 7422 one = (struct scsi_report_supported_opcodes_one *) 7423 ctsio->kern_data_ptr; 7424 entry = &ctl_cmd_table[opcode]; 7425 goto fill_one; 7426 case RSO_OPTIONS_OC_SA: 7427 one = (struct scsi_report_supported_opcodes_one *) 7428 ctsio->kern_data_ptr; 7429 entry = &ctl_cmd_table[opcode]; 7430 entry = &((const struct ctl_cmd_entry *) 7431 entry->execute)[service_action]; 7432fill_one: 7433 if (ctl_cmd_applicable(lun->be_lun->lun_type, entry)) { 7434 one->support = 3; 7435 scsi_ulto2b(entry->length, one->cdb_length); 7436 one->cdb_usage[0] = opcode; 7437 memcpy(&one->cdb_usage[1], entry->usage, 7438 entry->length - 1); 7439 } else 7440 one->support = 1; 7441 break; 7442 } 7443 7444 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7445 ctsio->be_move_done = ctl_config_move_done; 7446 7447 ctl_datamove((union ctl_io *)ctsio); 7448 return(retval); 7449} 7450 7451int 7452ctl_report_supported_tmf(struct ctl_scsiio *ctsio) 7453{ 7454 struct ctl_lun *lun; 7455 struct scsi_report_supported_tmf *cdb; 7456 struct scsi_report_supported_tmf_data *data; 7457 int retval; 7458 int alloc_len, total_len; 7459 7460 CTL_DEBUG_PRINT(("ctl_report_supported_tmf\n")); 7461 7462 cdb = (struct scsi_report_supported_tmf *)ctsio->cdb; 7463 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7464 7465 retval = CTL_RETVAL_COMPLETE; 7466 7467 total_len = sizeof(struct scsi_report_supported_tmf_data); 7468 alloc_len = scsi_4btoul(cdb->length); 7469 7470 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7471 7472 ctsio->kern_sg_entries = 0; 7473 7474 if (total_len < alloc_len) { 7475 ctsio->residual = alloc_len - total_len; 7476 ctsio->kern_data_len = total_len; 7477 ctsio->kern_total_len = total_len; 7478 } else { 7479 ctsio->residual = 0; 7480 ctsio->kern_data_len = alloc_len; 7481 ctsio->kern_total_len = alloc_len; 7482 } 7483 ctsio->kern_data_resid = 0; 7484 ctsio->kern_rel_offset = 0; 7485 7486 data = (struct scsi_report_supported_tmf_data *)ctsio->kern_data_ptr; 7487 data->byte1 |= RST_ATS | RST_LURS | RST_TRS; 7488 7489 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7490 ctsio->be_move_done = ctl_config_move_done; 7491 7492 ctl_datamove((union ctl_io *)ctsio); 7493 return (retval); 7494} 7495 7496int 7497ctl_report_timestamp(struct ctl_scsiio *ctsio) 7498{ 7499 struct ctl_lun *lun; 7500 struct scsi_report_timestamp *cdb; 7501 struct scsi_report_timestamp_data *data; 7502 struct timeval tv; 7503 int64_t timestamp; 7504 int retval; 7505 int alloc_len, total_len; 7506 7507 CTL_DEBUG_PRINT(("ctl_report_timestamp\n")); 7508 7509 cdb = (struct scsi_report_timestamp *)ctsio->cdb; 7510 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7511 7512 retval = CTL_RETVAL_COMPLETE; 7513 7514 total_len = sizeof(struct scsi_report_timestamp_data); 7515 alloc_len = scsi_4btoul(cdb->length); 7516 7517 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7518 7519 ctsio->kern_sg_entries = 0; 7520 7521 if (total_len < alloc_len) { 7522 ctsio->residual = alloc_len - total_len; 7523 ctsio->kern_data_len = total_len; 7524 ctsio->kern_total_len = total_len; 7525 } else { 7526 ctsio->residual = 0; 7527 ctsio->kern_data_len = alloc_len; 7528 ctsio->kern_total_len = alloc_len; 7529 } 7530 ctsio->kern_data_resid = 0; 7531 ctsio->kern_rel_offset = 0; 7532 7533 data = (struct scsi_report_timestamp_data *)ctsio->kern_data_ptr; 7534 scsi_ulto2b(sizeof(*data) - 2, data->length); 7535 data->origin = RTS_ORIG_OUTSIDE; 7536 getmicrotime(&tv); 7537 timestamp = (int64_t)tv.tv_sec * 1000 + tv.tv_usec / 1000; 7538 scsi_ulto4b(timestamp >> 16, data->timestamp); 7539 scsi_ulto2b(timestamp & 0xffff, &data->timestamp[4]); 7540 7541 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7542 ctsio->be_move_done = ctl_config_move_done; 7543 7544 ctl_datamove((union ctl_io *)ctsio); 7545 return (retval); 7546} 7547 7548int 7549ctl_persistent_reserve_in(struct ctl_scsiio *ctsio) 7550{ 7551 struct scsi_per_res_in *cdb; 7552 int alloc_len, total_len = 0; 7553 /* struct scsi_per_res_in_rsrv in_data; */ 7554 struct ctl_lun *lun; 7555 struct ctl_softc *softc; 7556 7557 CTL_DEBUG_PRINT(("ctl_persistent_reserve_in\n")); 7558 7559 softc = control_softc; 7560 7561 cdb = (struct scsi_per_res_in *)ctsio->cdb; 7562 7563 alloc_len = scsi_2btoul(cdb->length); 7564 7565 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 7566 7567retry: 7568 mtx_lock(&lun->lun_lock); 7569 switch (cdb->action) { 7570 case SPRI_RK: /* read keys */ 7571 total_len = sizeof(struct scsi_per_res_in_keys) + 7572 lun->pr_key_count * 7573 sizeof(struct scsi_per_res_key); 7574 break; 7575 case SPRI_RR: /* read reservation */ 7576 if (lun->flags & CTL_LUN_PR_RESERVED) 7577 total_len = sizeof(struct scsi_per_res_in_rsrv); 7578 else 7579 total_len = sizeof(struct scsi_per_res_in_header); 7580 break; 7581 case SPRI_RC: /* report capabilities */ 7582 total_len = sizeof(struct scsi_per_res_cap); 7583 break; 7584 default: 7585 panic("Invalid PR type %x", cdb->action); 7586 } 7587 mtx_unlock(&lun->lun_lock); 7588 7589 ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO); 7590 7591 if (total_len < alloc_len) { 7592 ctsio->residual = alloc_len - total_len; 7593 ctsio->kern_data_len = total_len; 7594 ctsio->kern_total_len = total_len; 7595 } else { 7596 ctsio->residual = 0; 7597 ctsio->kern_data_len = alloc_len; 7598 ctsio->kern_total_len = alloc_len; 7599 } 7600 7601 ctsio->kern_data_resid = 0; 7602 ctsio->kern_rel_offset = 0; 7603 ctsio->kern_sg_entries = 0; 7604 7605 mtx_lock(&lun->lun_lock); 7606 switch (cdb->action) { 7607 case SPRI_RK: { // read keys 7608 struct scsi_per_res_in_keys *res_keys; 7609 int i, key_count; 7610 7611 res_keys = (struct scsi_per_res_in_keys*)ctsio->kern_data_ptr; 7612 7613 /* 7614 * We had to drop the lock to allocate our buffer, which 7615 * leaves time for someone to come in with another 7616 * persistent reservation. (That is unlikely, though, 7617 * since this should be the only persistent reservation 7618 * command active right now.) 7619 */ 7620 if (total_len != (sizeof(struct scsi_per_res_in_keys) + 7621 (lun->pr_key_count * 7622 sizeof(struct scsi_per_res_key)))){ 7623 mtx_unlock(&lun->lun_lock); 7624 free(ctsio->kern_data_ptr, M_CTL); 7625 printf("%s: reservation length changed, retrying\n", 7626 __func__); 7627 goto retry; 7628 } 7629 7630 scsi_ulto4b(lun->PRGeneration, res_keys->header.generation); 7631 7632 scsi_ulto4b(sizeof(struct scsi_per_res_key) * 7633 lun->pr_key_count, res_keys->header.length); 7634 7635 for (i = 0, key_count = 0; i < 2*CTL_MAX_INITIATORS; i++) { 7636 if (!lun->per_res[i].registered) 7637 continue; 7638 7639 /* 7640 * We used lun->pr_key_count to calculate the 7641 * size to allocate. If it turns out the number of 7642 * initiators with the registered flag set is 7643 * larger than that (i.e. they haven't been kept in 7644 * sync), we've got a problem. 7645 */ 7646 if (key_count >= lun->pr_key_count) { 7647#ifdef NEEDTOPORT 7648 csevent_log(CSC_CTL | CSC_SHELF_SW | 7649 CTL_PR_ERROR, 7650 csevent_LogType_Fault, 7651 csevent_AlertLevel_Yellow, 7652 csevent_FRU_ShelfController, 7653 csevent_FRU_Firmware, 7654 csevent_FRU_Unknown, 7655 "registered keys %d >= key " 7656 "count %d", key_count, 7657 lun->pr_key_count); 7658#endif 7659 key_count++; 7660 continue; 7661 } 7662 memcpy(res_keys->keys[key_count].key, 7663 lun->per_res[i].res_key.key, 7664 ctl_min(sizeof(res_keys->keys[key_count].key), 7665 sizeof(lun->per_res[i].res_key))); 7666 key_count++; 7667 } 7668 break; 7669 } 7670 case SPRI_RR: { // read reservation 7671 struct scsi_per_res_in_rsrv *res; 7672 int tmp_len, header_only; 7673 7674 res = (struct scsi_per_res_in_rsrv *)ctsio->kern_data_ptr; 7675 7676 scsi_ulto4b(lun->PRGeneration, res->header.generation); 7677 7678 if (lun->flags & CTL_LUN_PR_RESERVED) 7679 { 7680 tmp_len = sizeof(struct scsi_per_res_in_rsrv); 7681 scsi_ulto4b(sizeof(struct scsi_per_res_in_rsrv_data), 7682 res->header.length); 7683 header_only = 0; 7684 } else { 7685 tmp_len = sizeof(struct scsi_per_res_in_header); 7686 scsi_ulto4b(0, res->header.length); 7687 header_only = 1; 7688 } 7689 7690 /* 7691 * We had to drop the lock to allocate our buffer, which 7692 * leaves time for someone to come in with another 7693 * persistent reservation. (That is unlikely, though, 7694 * since this should be the only persistent reservation 7695 * command active right now.) 7696 */ 7697 if (tmp_len != total_len) { 7698 mtx_unlock(&lun->lun_lock); 7699 free(ctsio->kern_data_ptr, M_CTL); 7700 printf("%s: reservation status changed, retrying\n", 7701 __func__); 7702 goto retry; 7703 } 7704 7705 /* 7706 * No reservation held, so we're done. 7707 */ 7708 if (header_only != 0) 7709 break; 7710 7711 /* 7712 * If the registration is an All Registrants type, the key 7713 * is 0, since it doesn't really matter. 7714 */ 7715 if (lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 7716 memcpy(res->data.reservation, 7717 &lun->per_res[lun->pr_res_idx].res_key, 7718 sizeof(struct scsi_per_res_key)); 7719 } 7720 res->data.scopetype = lun->res_type; 7721 break; 7722 } 7723 case SPRI_RC: //report capabilities 7724 { 7725 struct scsi_per_res_cap *res_cap; 7726 uint16_t type_mask; 7727 7728 res_cap = (struct scsi_per_res_cap *)ctsio->kern_data_ptr; 7729 scsi_ulto2b(sizeof(*res_cap), res_cap->length); 7730 res_cap->flags2 |= SPRI_TMV | SPRI_ALLOW_3; 7731 type_mask = SPRI_TM_WR_EX_AR | 7732 SPRI_TM_EX_AC_RO | 7733 SPRI_TM_WR_EX_RO | 7734 SPRI_TM_EX_AC | 7735 SPRI_TM_WR_EX | 7736 SPRI_TM_EX_AC_AR; 7737 scsi_ulto2b(type_mask, res_cap->type_mask); 7738 break; 7739 } 7740 case SPRI_RS: //read full status 7741 default: 7742 /* 7743 * This is a bug, because we just checked for this above, 7744 * and should have returned an error. 7745 */ 7746 panic("Invalid PR type %x", cdb->action); 7747 break; /* NOTREACHED */ 7748 } 7749 mtx_unlock(&lun->lun_lock); 7750 7751 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 7752 ctsio->be_move_done = ctl_config_move_done; 7753 7754 CTL_DEBUG_PRINT(("buf = %x %x %x %x %x %x %x %x\n", 7755 ctsio->kern_data_ptr[0], ctsio->kern_data_ptr[1], 7756 ctsio->kern_data_ptr[2], ctsio->kern_data_ptr[3], 7757 ctsio->kern_data_ptr[4], ctsio->kern_data_ptr[5], 7758 ctsio->kern_data_ptr[6], ctsio->kern_data_ptr[7])); 7759 7760 ctl_datamove((union ctl_io *)ctsio); 7761 7762 return (CTL_RETVAL_COMPLETE); 7763} 7764 7765/* 7766 * Returns 0 if ctl_persistent_reserve_out() should continue, non-zero if 7767 * it should return. 7768 */ 7769static int 7770ctl_pro_preempt(struct ctl_softc *softc, struct ctl_lun *lun, uint64_t res_key, 7771 uint64_t sa_res_key, uint8_t type, uint32_t residx, 7772 struct ctl_scsiio *ctsio, struct scsi_per_res_out *cdb, 7773 struct scsi_per_res_out_parms* param) 7774{ 7775 union ctl_ha_msg persis_io; 7776 int retval, i; 7777 int isc_retval; 7778 7779 retval = 0; 7780 7781 mtx_lock(&lun->lun_lock); 7782 if (sa_res_key == 0) { 7783 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 7784 /* validate scope and type */ 7785 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7786 SPR_LU_SCOPE) { 7787 mtx_unlock(&lun->lun_lock); 7788 ctl_set_invalid_field(/*ctsio*/ ctsio, 7789 /*sks_valid*/ 1, 7790 /*command*/ 1, 7791 /*field*/ 2, 7792 /*bit_valid*/ 1, 7793 /*bit*/ 4); 7794 ctl_done((union ctl_io *)ctsio); 7795 return (1); 7796 } 7797 7798 if (type>8 || type==2 || type==4 || type==0) { 7799 mtx_unlock(&lun->lun_lock); 7800 ctl_set_invalid_field(/*ctsio*/ ctsio, 7801 /*sks_valid*/ 1, 7802 /*command*/ 1, 7803 /*field*/ 2, 7804 /*bit_valid*/ 1, 7805 /*bit*/ 0); 7806 ctl_done((union ctl_io *)ctsio); 7807 return (1); 7808 } 7809 7810 /* temporarily unregister this nexus */ 7811 lun->per_res[residx].registered = 0; 7812 7813 /* 7814 * Unregister everybody else and build UA for 7815 * them 7816 */ 7817 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7818 if (lun->per_res[i].registered == 0) 7819 continue; 7820 7821 if (!persis_offset 7822 && i <CTL_MAX_INITIATORS) 7823 lun->pending_sense[i].ua_pending |= 7824 CTL_UA_REG_PREEMPT; 7825 else if (persis_offset 7826 && i >= persis_offset) 7827 lun->pending_sense[i-persis_offset 7828 ].ua_pending |= 7829 CTL_UA_REG_PREEMPT; 7830 lun->per_res[i].registered = 0; 7831 memset(&lun->per_res[i].res_key, 0, 7832 sizeof(struct scsi_per_res_key)); 7833 } 7834 lun->per_res[residx].registered = 1; 7835 lun->pr_key_count = 1; 7836 lun->res_type = type; 7837 if (lun->res_type != SPR_TYPE_WR_EX_AR 7838 && lun->res_type != SPR_TYPE_EX_AC_AR) 7839 lun->pr_res_idx = residx; 7840 7841 /* send msg to other side */ 7842 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7843 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7844 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7845 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7846 persis_io.pr.pr_info.res_type = type; 7847 memcpy(persis_io.pr.pr_info.sa_res_key, 7848 param->serv_act_res_key, 7849 sizeof(param->serv_act_res_key)); 7850 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7851 &persis_io, sizeof(persis_io), 0)) > 7852 CTL_HA_STATUS_SUCCESS) { 7853 printf("CTL:Persis Out error returned " 7854 "from ctl_ha_msg_send %d\n", 7855 isc_retval); 7856 } 7857 } else { 7858 /* not all registrants */ 7859 mtx_unlock(&lun->lun_lock); 7860 free(ctsio->kern_data_ptr, M_CTL); 7861 ctl_set_invalid_field(ctsio, 7862 /*sks_valid*/ 1, 7863 /*command*/ 0, 7864 /*field*/ 8, 7865 /*bit_valid*/ 0, 7866 /*bit*/ 0); 7867 ctl_done((union ctl_io *)ctsio); 7868 return (1); 7869 } 7870 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 7871 || !(lun->flags & CTL_LUN_PR_RESERVED)) { 7872 int found = 0; 7873 7874 if (res_key == sa_res_key) { 7875 /* special case */ 7876 /* 7877 * The spec implies this is not good but doesn't 7878 * say what to do. There are two choices either 7879 * generate a res conflict or check condition 7880 * with illegal field in parameter data. Since 7881 * that is what is done when the sa_res_key is 7882 * zero I'll take that approach since this has 7883 * to do with the sa_res_key. 7884 */ 7885 mtx_unlock(&lun->lun_lock); 7886 free(ctsio->kern_data_ptr, M_CTL); 7887 ctl_set_invalid_field(ctsio, 7888 /*sks_valid*/ 1, 7889 /*command*/ 0, 7890 /*field*/ 8, 7891 /*bit_valid*/ 0, 7892 /*bit*/ 0); 7893 ctl_done((union ctl_io *)ctsio); 7894 return (1); 7895 } 7896 7897 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7898 if (lun->per_res[i].registered 7899 && memcmp(param->serv_act_res_key, 7900 lun->per_res[i].res_key.key, 7901 sizeof(struct scsi_per_res_key)) != 0) 7902 continue; 7903 7904 found = 1; 7905 lun->per_res[i].registered = 0; 7906 memset(&lun->per_res[i].res_key, 0, 7907 sizeof(struct scsi_per_res_key)); 7908 lun->pr_key_count--; 7909 7910 if (!persis_offset 7911 && i < CTL_MAX_INITIATORS) 7912 lun->pending_sense[i].ua_pending |= 7913 CTL_UA_REG_PREEMPT; 7914 else if (persis_offset 7915 && i >= persis_offset) 7916 lun->pending_sense[i-persis_offset].ua_pending|= 7917 CTL_UA_REG_PREEMPT; 7918 } 7919 if (!found) { 7920 mtx_unlock(&lun->lun_lock); 7921 free(ctsio->kern_data_ptr, M_CTL); 7922 ctl_set_reservation_conflict(ctsio); 7923 ctl_done((union ctl_io *)ctsio); 7924 return (CTL_RETVAL_COMPLETE); 7925 } 7926 /* send msg to other side */ 7927 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 7928 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 7929 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 7930 persis_io.pr.pr_info.residx = lun->pr_res_idx; 7931 persis_io.pr.pr_info.res_type = type; 7932 memcpy(persis_io.pr.pr_info.sa_res_key, 7933 param->serv_act_res_key, 7934 sizeof(param->serv_act_res_key)); 7935 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 7936 &persis_io, sizeof(persis_io), 0)) > 7937 CTL_HA_STATUS_SUCCESS) { 7938 printf("CTL:Persis Out error returned from " 7939 "ctl_ha_msg_send %d\n", isc_retval); 7940 } 7941 } else { 7942 /* Reserved but not all registrants */ 7943 /* sa_res_key is res holder */ 7944 if (memcmp(param->serv_act_res_key, 7945 lun->per_res[lun->pr_res_idx].res_key.key, 7946 sizeof(struct scsi_per_res_key)) == 0) { 7947 /* validate scope and type */ 7948 if ((cdb->scope_type & SPR_SCOPE_MASK) != 7949 SPR_LU_SCOPE) { 7950 mtx_unlock(&lun->lun_lock); 7951 ctl_set_invalid_field(/*ctsio*/ ctsio, 7952 /*sks_valid*/ 1, 7953 /*command*/ 1, 7954 /*field*/ 2, 7955 /*bit_valid*/ 1, 7956 /*bit*/ 4); 7957 ctl_done((union ctl_io *)ctsio); 7958 return (1); 7959 } 7960 7961 if (type>8 || type==2 || type==4 || type==0) { 7962 mtx_unlock(&lun->lun_lock); 7963 ctl_set_invalid_field(/*ctsio*/ ctsio, 7964 /*sks_valid*/ 1, 7965 /*command*/ 1, 7966 /*field*/ 2, 7967 /*bit_valid*/ 1, 7968 /*bit*/ 0); 7969 ctl_done((union ctl_io *)ctsio); 7970 return (1); 7971 } 7972 7973 /* 7974 * Do the following: 7975 * if sa_res_key != res_key remove all 7976 * registrants w/sa_res_key and generate UA 7977 * for these registrants(Registrations 7978 * Preempted) if it wasn't an exclusive 7979 * reservation generate UA(Reservations 7980 * Preempted) for all other registered nexuses 7981 * if the type has changed. Establish the new 7982 * reservation and holder. If res_key and 7983 * sa_res_key are the same do the above 7984 * except don't unregister the res holder. 7985 */ 7986 7987 /* 7988 * Temporarily unregister so it won't get 7989 * removed or UA generated 7990 */ 7991 lun->per_res[residx].registered = 0; 7992 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 7993 if (lun->per_res[i].registered == 0) 7994 continue; 7995 7996 if (memcmp(param->serv_act_res_key, 7997 lun->per_res[i].res_key.key, 7998 sizeof(struct scsi_per_res_key)) == 0) { 7999 lun->per_res[i].registered = 0; 8000 memset(&lun->per_res[i].res_key, 8001 0, 8002 sizeof(struct scsi_per_res_key)); 8003 lun->pr_key_count--; 8004 8005 if (!persis_offset 8006 && i < CTL_MAX_INITIATORS) 8007 lun->pending_sense[i 8008 ].ua_pending |= 8009 CTL_UA_REG_PREEMPT; 8010 else if (persis_offset 8011 && i >= persis_offset) 8012 lun->pending_sense[ 8013 i-persis_offset].ua_pending |= 8014 CTL_UA_REG_PREEMPT; 8015 } else if (type != lun->res_type 8016 && (lun->res_type == SPR_TYPE_WR_EX_RO 8017 || lun->res_type ==SPR_TYPE_EX_AC_RO)){ 8018 if (!persis_offset 8019 && i < CTL_MAX_INITIATORS) 8020 lun->pending_sense[i 8021 ].ua_pending |= 8022 CTL_UA_RES_RELEASE; 8023 else if (persis_offset 8024 && i >= persis_offset) 8025 lun->pending_sense[ 8026 i-persis_offset 8027 ].ua_pending |= 8028 CTL_UA_RES_RELEASE; 8029 } 8030 } 8031 lun->per_res[residx].registered = 1; 8032 lun->res_type = type; 8033 if (lun->res_type != SPR_TYPE_WR_EX_AR 8034 && lun->res_type != SPR_TYPE_EX_AC_AR) 8035 lun->pr_res_idx = residx; 8036 else 8037 lun->pr_res_idx = 8038 CTL_PR_ALL_REGISTRANTS; 8039 8040 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8041 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8042 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 8043 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8044 persis_io.pr.pr_info.res_type = type; 8045 memcpy(persis_io.pr.pr_info.sa_res_key, 8046 param->serv_act_res_key, 8047 sizeof(param->serv_act_res_key)); 8048 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8049 &persis_io, sizeof(persis_io), 0)) > 8050 CTL_HA_STATUS_SUCCESS) { 8051 printf("CTL:Persis Out error returned " 8052 "from ctl_ha_msg_send %d\n", 8053 isc_retval); 8054 } 8055 } else { 8056 /* 8057 * sa_res_key is not the res holder just 8058 * remove registrants 8059 */ 8060 int found=0; 8061 8062 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8063 if (memcmp(param->serv_act_res_key, 8064 lun->per_res[i].res_key.key, 8065 sizeof(struct scsi_per_res_key)) != 0) 8066 continue; 8067 8068 found = 1; 8069 lun->per_res[i].registered = 0; 8070 memset(&lun->per_res[i].res_key, 0, 8071 sizeof(struct scsi_per_res_key)); 8072 lun->pr_key_count--; 8073 8074 if (!persis_offset 8075 && i < CTL_MAX_INITIATORS) 8076 lun->pending_sense[i].ua_pending |= 8077 CTL_UA_REG_PREEMPT; 8078 else if (persis_offset 8079 && i >= persis_offset) 8080 lun->pending_sense[ 8081 i-persis_offset].ua_pending |= 8082 CTL_UA_REG_PREEMPT; 8083 } 8084 8085 if (!found) { 8086 mtx_unlock(&lun->lun_lock); 8087 free(ctsio->kern_data_ptr, M_CTL); 8088 ctl_set_reservation_conflict(ctsio); 8089 ctl_done((union ctl_io *)ctsio); 8090 return (1); 8091 } 8092 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8093 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8094 persis_io.pr.pr_info.action = CTL_PR_PREEMPT; 8095 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8096 persis_io.pr.pr_info.res_type = type; 8097 memcpy(persis_io.pr.pr_info.sa_res_key, 8098 param->serv_act_res_key, 8099 sizeof(param->serv_act_res_key)); 8100 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8101 &persis_io, sizeof(persis_io), 0)) > 8102 CTL_HA_STATUS_SUCCESS) { 8103 printf("CTL:Persis Out error returned " 8104 "from ctl_ha_msg_send %d\n", 8105 isc_retval); 8106 } 8107 } 8108 } 8109 8110 lun->PRGeneration++; 8111 mtx_unlock(&lun->lun_lock); 8112 8113 return (retval); 8114} 8115 8116static void 8117ctl_pro_preempt_other(struct ctl_lun *lun, union ctl_ha_msg *msg) 8118{ 8119 int i; 8120 8121 if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS 8122 || lun->pr_res_idx == CTL_PR_NO_RESERVATION 8123 || memcmp(&lun->per_res[lun->pr_res_idx].res_key, 8124 msg->pr.pr_info.sa_res_key, 8125 sizeof(struct scsi_per_res_key)) != 0) { 8126 uint64_t sa_res_key; 8127 sa_res_key = scsi_8btou64(msg->pr.pr_info.sa_res_key); 8128 8129 if (sa_res_key == 0) { 8130 /* temporarily unregister this nexus */ 8131 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8132 8133 /* 8134 * Unregister everybody else and build UA for 8135 * them 8136 */ 8137 for(i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8138 if (lun->per_res[i].registered == 0) 8139 continue; 8140 8141 if (!persis_offset 8142 && i < CTL_MAX_INITIATORS) 8143 lun->pending_sense[i].ua_pending |= 8144 CTL_UA_REG_PREEMPT; 8145 else if (persis_offset && i >= persis_offset) 8146 lun->pending_sense[i - 8147 persis_offset].ua_pending |= 8148 CTL_UA_REG_PREEMPT; 8149 lun->per_res[i].registered = 0; 8150 memset(&lun->per_res[i].res_key, 0, 8151 sizeof(struct scsi_per_res_key)); 8152 } 8153 8154 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8155 lun->pr_key_count = 1; 8156 lun->res_type = msg->pr.pr_info.res_type; 8157 if (lun->res_type != SPR_TYPE_WR_EX_AR 8158 && lun->res_type != SPR_TYPE_EX_AC_AR) 8159 lun->pr_res_idx = msg->pr.pr_info.residx; 8160 } else { 8161 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8162 if (memcmp(msg->pr.pr_info.sa_res_key, 8163 lun->per_res[i].res_key.key, 8164 sizeof(struct scsi_per_res_key)) != 0) 8165 continue; 8166 8167 lun->per_res[i].registered = 0; 8168 memset(&lun->per_res[i].res_key, 0, 8169 sizeof(struct scsi_per_res_key)); 8170 lun->pr_key_count--; 8171 8172 if (!persis_offset 8173 && i < persis_offset) 8174 lun->pending_sense[i].ua_pending |= 8175 CTL_UA_REG_PREEMPT; 8176 else if (persis_offset 8177 && i >= persis_offset) 8178 lun->pending_sense[i - 8179 persis_offset].ua_pending |= 8180 CTL_UA_REG_PREEMPT; 8181 } 8182 } 8183 } else { 8184 /* 8185 * Temporarily unregister so it won't get removed 8186 * or UA generated 8187 */ 8188 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8189 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8190 if (lun->per_res[i].registered == 0) 8191 continue; 8192 8193 if (memcmp(msg->pr.pr_info.sa_res_key, 8194 lun->per_res[i].res_key.key, 8195 sizeof(struct scsi_per_res_key)) == 0) { 8196 lun->per_res[i].registered = 0; 8197 memset(&lun->per_res[i].res_key, 0, 8198 sizeof(struct scsi_per_res_key)); 8199 lun->pr_key_count--; 8200 if (!persis_offset 8201 && i < CTL_MAX_INITIATORS) 8202 lun->pending_sense[i].ua_pending |= 8203 CTL_UA_REG_PREEMPT; 8204 else if (persis_offset 8205 && i >= persis_offset) 8206 lun->pending_sense[i - 8207 persis_offset].ua_pending |= 8208 CTL_UA_REG_PREEMPT; 8209 } else if (msg->pr.pr_info.res_type != lun->res_type 8210 && (lun->res_type == SPR_TYPE_WR_EX_RO 8211 || lun->res_type == SPR_TYPE_EX_AC_RO)) { 8212 if (!persis_offset 8213 && i < persis_offset) 8214 lun->pending_sense[i 8215 ].ua_pending |= 8216 CTL_UA_RES_RELEASE; 8217 else if (persis_offset 8218 && i >= persis_offset) 8219 lun->pending_sense[i - 8220 persis_offset].ua_pending |= 8221 CTL_UA_RES_RELEASE; 8222 } 8223 } 8224 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8225 lun->res_type = msg->pr.pr_info.res_type; 8226 if (lun->res_type != SPR_TYPE_WR_EX_AR 8227 && lun->res_type != SPR_TYPE_EX_AC_AR) 8228 lun->pr_res_idx = msg->pr.pr_info.residx; 8229 else 8230 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8231 } 8232 lun->PRGeneration++; 8233 8234} 8235 8236 8237int 8238ctl_persistent_reserve_out(struct ctl_scsiio *ctsio) 8239{ 8240 int retval; 8241 int isc_retval; 8242 u_int32_t param_len; 8243 struct scsi_per_res_out *cdb; 8244 struct ctl_lun *lun; 8245 struct scsi_per_res_out_parms* param; 8246 struct ctl_softc *softc; 8247 uint32_t residx; 8248 uint64_t res_key, sa_res_key; 8249 uint8_t type; 8250 union ctl_ha_msg persis_io; 8251 int i; 8252 8253 CTL_DEBUG_PRINT(("ctl_persistent_reserve_out\n")); 8254 8255 retval = CTL_RETVAL_COMPLETE; 8256 8257 softc = control_softc; 8258 8259 cdb = (struct scsi_per_res_out *)ctsio->cdb; 8260 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8261 8262 /* 8263 * We only support whole-LUN scope. The scope & type are ignored for 8264 * register, register and ignore existing key and clear. 8265 * We sometimes ignore scope and type on preempts too!! 8266 * Verify reservation type here as well. 8267 */ 8268 type = cdb->scope_type & SPR_TYPE_MASK; 8269 if ((cdb->action == SPRO_RESERVE) 8270 || (cdb->action == SPRO_RELEASE)) { 8271 if ((cdb->scope_type & SPR_SCOPE_MASK) != SPR_LU_SCOPE) { 8272 ctl_set_invalid_field(/*ctsio*/ ctsio, 8273 /*sks_valid*/ 1, 8274 /*command*/ 1, 8275 /*field*/ 2, 8276 /*bit_valid*/ 1, 8277 /*bit*/ 4); 8278 ctl_done((union ctl_io *)ctsio); 8279 return (CTL_RETVAL_COMPLETE); 8280 } 8281 8282 if (type>8 || type==2 || type==4 || type==0) { 8283 ctl_set_invalid_field(/*ctsio*/ ctsio, 8284 /*sks_valid*/ 1, 8285 /*command*/ 1, 8286 /*field*/ 2, 8287 /*bit_valid*/ 1, 8288 /*bit*/ 0); 8289 ctl_done((union ctl_io *)ctsio); 8290 return (CTL_RETVAL_COMPLETE); 8291 } 8292 } 8293 8294 param_len = scsi_4btoul(cdb->length); 8295 8296 if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) { 8297 ctsio->kern_data_ptr = malloc(param_len, M_CTL, M_WAITOK); 8298 ctsio->kern_data_len = param_len; 8299 ctsio->kern_total_len = param_len; 8300 ctsio->kern_data_resid = 0; 8301 ctsio->kern_rel_offset = 0; 8302 ctsio->kern_sg_entries = 0; 8303 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 8304 ctsio->be_move_done = ctl_config_move_done; 8305 ctl_datamove((union ctl_io *)ctsio); 8306 8307 return (CTL_RETVAL_COMPLETE); 8308 } 8309 8310 param = (struct scsi_per_res_out_parms *)ctsio->kern_data_ptr; 8311 8312 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8313 res_key = scsi_8btou64(param->res_key.key); 8314 sa_res_key = scsi_8btou64(param->serv_act_res_key); 8315 8316 /* 8317 * Validate the reservation key here except for SPRO_REG_IGNO 8318 * This must be done for all other service actions 8319 */ 8320 if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REG_IGNO) { 8321 mtx_lock(&lun->lun_lock); 8322 if (lun->per_res[residx].registered) { 8323 if (memcmp(param->res_key.key, 8324 lun->per_res[residx].res_key.key, 8325 ctl_min(sizeof(param->res_key), 8326 sizeof(lun->per_res[residx].res_key))) != 0) { 8327 /* 8328 * The current key passed in doesn't match 8329 * the one the initiator previously 8330 * registered. 8331 */ 8332 mtx_unlock(&lun->lun_lock); 8333 free(ctsio->kern_data_ptr, M_CTL); 8334 ctl_set_reservation_conflict(ctsio); 8335 ctl_done((union ctl_io *)ctsio); 8336 return (CTL_RETVAL_COMPLETE); 8337 } 8338 } else if ((cdb->action & SPRO_ACTION_MASK) != SPRO_REGISTER) { 8339 /* 8340 * We are not registered 8341 */ 8342 mtx_unlock(&lun->lun_lock); 8343 free(ctsio->kern_data_ptr, M_CTL); 8344 ctl_set_reservation_conflict(ctsio); 8345 ctl_done((union ctl_io *)ctsio); 8346 return (CTL_RETVAL_COMPLETE); 8347 } else if (res_key != 0) { 8348 /* 8349 * We are not registered and trying to register but 8350 * the register key isn't zero. 8351 */ 8352 mtx_unlock(&lun->lun_lock); 8353 free(ctsio->kern_data_ptr, M_CTL); 8354 ctl_set_reservation_conflict(ctsio); 8355 ctl_done((union ctl_io *)ctsio); 8356 return (CTL_RETVAL_COMPLETE); 8357 } 8358 mtx_unlock(&lun->lun_lock); 8359 } 8360 8361 switch (cdb->action & SPRO_ACTION_MASK) { 8362 case SPRO_REGISTER: 8363 case SPRO_REG_IGNO: { 8364 8365#if 0 8366 printf("Registration received\n"); 8367#endif 8368 8369 /* 8370 * We don't support any of these options, as we report in 8371 * the read capabilities request (see 8372 * ctl_persistent_reserve_in(), above). 8373 */ 8374 if ((param->flags & SPR_SPEC_I_PT) 8375 || (param->flags & SPR_ALL_TG_PT) 8376 || (param->flags & SPR_APTPL)) { 8377 int bit_ptr; 8378 8379 if (param->flags & SPR_APTPL) 8380 bit_ptr = 0; 8381 else if (param->flags & SPR_ALL_TG_PT) 8382 bit_ptr = 2; 8383 else /* SPR_SPEC_I_PT */ 8384 bit_ptr = 3; 8385 8386 free(ctsio->kern_data_ptr, M_CTL); 8387 ctl_set_invalid_field(ctsio, 8388 /*sks_valid*/ 1, 8389 /*command*/ 0, 8390 /*field*/ 20, 8391 /*bit_valid*/ 1, 8392 /*bit*/ bit_ptr); 8393 ctl_done((union ctl_io *)ctsio); 8394 return (CTL_RETVAL_COMPLETE); 8395 } 8396 8397 mtx_lock(&lun->lun_lock); 8398 8399 /* 8400 * The initiator wants to clear the 8401 * key/unregister. 8402 */ 8403 if (sa_res_key == 0) { 8404 if ((res_key == 0 8405 && (cdb->action & SPRO_ACTION_MASK) == SPRO_REGISTER) 8406 || ((cdb->action & SPRO_ACTION_MASK) == SPRO_REG_IGNO 8407 && !lun->per_res[residx].registered)) { 8408 mtx_unlock(&lun->lun_lock); 8409 goto done; 8410 } 8411 8412 lun->per_res[residx].registered = 0; 8413 memset(&lun->per_res[residx].res_key, 8414 0, sizeof(lun->per_res[residx].res_key)); 8415 lun->pr_key_count--; 8416 8417 if (residx == lun->pr_res_idx) { 8418 lun->flags &= ~CTL_LUN_PR_RESERVED; 8419 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8420 8421 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8422 || lun->res_type == SPR_TYPE_EX_AC_RO) 8423 && lun->pr_key_count) { 8424 /* 8425 * If the reservation is a registrants 8426 * only type we need to generate a UA 8427 * for other registered inits. The 8428 * sense code should be RESERVATIONS 8429 * RELEASED 8430 */ 8431 8432 for (i = 0; i < CTL_MAX_INITIATORS;i++){ 8433 if (lun->per_res[ 8434 i+persis_offset].registered 8435 == 0) 8436 continue; 8437 lun->pending_sense[i 8438 ].ua_pending |= 8439 CTL_UA_RES_RELEASE; 8440 } 8441 } 8442 lun->res_type = 0; 8443 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8444 if (lun->pr_key_count==0) { 8445 lun->flags &= ~CTL_LUN_PR_RESERVED; 8446 lun->res_type = 0; 8447 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8448 } 8449 } 8450 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8451 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8452 persis_io.pr.pr_info.action = CTL_PR_UNREG_KEY; 8453 persis_io.pr.pr_info.residx = residx; 8454 if ((isc_retval = ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8455 &persis_io, sizeof(persis_io), 0 )) > 8456 CTL_HA_STATUS_SUCCESS) { 8457 printf("CTL:Persis Out error returned from " 8458 "ctl_ha_msg_send %d\n", isc_retval); 8459 } 8460 } else /* sa_res_key != 0 */ { 8461 8462 /* 8463 * If we aren't registered currently then increment 8464 * the key count and set the registered flag. 8465 */ 8466 if (!lun->per_res[residx].registered) { 8467 lun->pr_key_count++; 8468 lun->per_res[residx].registered = 1; 8469 } 8470 8471 memcpy(&lun->per_res[residx].res_key, 8472 param->serv_act_res_key, 8473 ctl_min(sizeof(param->serv_act_res_key), 8474 sizeof(lun->per_res[residx].res_key))); 8475 8476 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8477 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8478 persis_io.pr.pr_info.action = CTL_PR_REG_KEY; 8479 persis_io.pr.pr_info.residx = residx; 8480 memcpy(persis_io.pr.pr_info.sa_res_key, 8481 param->serv_act_res_key, 8482 sizeof(param->serv_act_res_key)); 8483 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8484 &persis_io, sizeof(persis_io), 0)) > 8485 CTL_HA_STATUS_SUCCESS) { 8486 printf("CTL:Persis Out error returned from " 8487 "ctl_ha_msg_send %d\n", isc_retval); 8488 } 8489 } 8490 lun->PRGeneration++; 8491 mtx_unlock(&lun->lun_lock); 8492 8493 break; 8494 } 8495 case SPRO_RESERVE: 8496#if 0 8497 printf("Reserve executed type %d\n", type); 8498#endif 8499 mtx_lock(&lun->lun_lock); 8500 if (lun->flags & CTL_LUN_PR_RESERVED) { 8501 /* 8502 * if this isn't the reservation holder and it's 8503 * not a "all registrants" type or if the type is 8504 * different then we have a conflict 8505 */ 8506 if ((lun->pr_res_idx != residx 8507 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) 8508 || lun->res_type != type) { 8509 mtx_unlock(&lun->lun_lock); 8510 free(ctsio->kern_data_ptr, M_CTL); 8511 ctl_set_reservation_conflict(ctsio); 8512 ctl_done((union ctl_io *)ctsio); 8513 return (CTL_RETVAL_COMPLETE); 8514 } 8515 mtx_unlock(&lun->lun_lock); 8516 } else /* create a reservation */ { 8517 /* 8518 * If it's not an "all registrants" type record 8519 * reservation holder 8520 */ 8521 if (type != SPR_TYPE_WR_EX_AR 8522 && type != SPR_TYPE_EX_AC_AR) 8523 lun->pr_res_idx = residx; /* Res holder */ 8524 else 8525 lun->pr_res_idx = CTL_PR_ALL_REGISTRANTS; 8526 8527 lun->flags |= CTL_LUN_PR_RESERVED; 8528 lun->res_type = type; 8529 8530 mtx_unlock(&lun->lun_lock); 8531 8532 /* send msg to other side */ 8533 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8534 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8535 persis_io.pr.pr_info.action = CTL_PR_RESERVE; 8536 persis_io.pr.pr_info.residx = lun->pr_res_idx; 8537 persis_io.pr.pr_info.res_type = type; 8538 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 8539 &persis_io, sizeof(persis_io), 0)) > 8540 CTL_HA_STATUS_SUCCESS) { 8541 printf("CTL:Persis Out error returned from " 8542 "ctl_ha_msg_send %d\n", isc_retval); 8543 } 8544 } 8545 break; 8546 8547 case SPRO_RELEASE: 8548 mtx_lock(&lun->lun_lock); 8549 if ((lun->flags & CTL_LUN_PR_RESERVED) == 0) { 8550 /* No reservation exists return good status */ 8551 mtx_unlock(&lun->lun_lock); 8552 goto done; 8553 } 8554 /* 8555 * Is this nexus a reservation holder? 8556 */ 8557 if (lun->pr_res_idx != residx 8558 && lun->pr_res_idx != CTL_PR_ALL_REGISTRANTS) { 8559 /* 8560 * not a res holder return good status but 8561 * do nothing 8562 */ 8563 mtx_unlock(&lun->lun_lock); 8564 goto done; 8565 } 8566 8567 if (lun->res_type != type) { 8568 mtx_unlock(&lun->lun_lock); 8569 free(ctsio->kern_data_ptr, M_CTL); 8570 ctl_set_illegal_pr_release(ctsio); 8571 ctl_done((union ctl_io *)ctsio); 8572 return (CTL_RETVAL_COMPLETE); 8573 } 8574 8575 /* okay to release */ 8576 lun->flags &= ~CTL_LUN_PR_RESERVED; 8577 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8578 lun->res_type = 0; 8579 8580 /* 8581 * if this isn't an exclusive access 8582 * res generate UA for all other 8583 * registrants. 8584 */ 8585 if (type != SPR_TYPE_EX_AC 8586 && type != SPR_TYPE_WR_EX) { 8587 /* 8588 * temporarily unregister so we don't generate UA 8589 */ 8590 lun->per_res[residx].registered = 0; 8591 8592 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8593 if (lun->per_res[i+persis_offset].registered 8594 == 0) 8595 continue; 8596 lun->pending_sense[i].ua_pending |= 8597 CTL_UA_RES_RELEASE; 8598 } 8599 8600 lun->per_res[residx].registered = 1; 8601 } 8602 mtx_unlock(&lun->lun_lock); 8603 /* Send msg to other side */ 8604 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8605 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8606 persis_io.pr.pr_info.action = CTL_PR_RELEASE; 8607 if ((isc_retval=ctl_ha_msg_send( CTL_HA_CHAN_CTL, &persis_io, 8608 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8609 printf("CTL:Persis Out error returned from " 8610 "ctl_ha_msg_send %d\n", isc_retval); 8611 } 8612 break; 8613 8614 case SPRO_CLEAR: 8615 /* send msg to other side */ 8616 8617 mtx_lock(&lun->lun_lock); 8618 lun->flags &= ~CTL_LUN_PR_RESERVED; 8619 lun->res_type = 0; 8620 lun->pr_key_count = 0; 8621 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8622 8623 8624 memset(&lun->per_res[residx].res_key, 8625 0, sizeof(lun->per_res[residx].res_key)); 8626 lun->per_res[residx].registered = 0; 8627 8628 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) 8629 if (lun->per_res[i].registered) { 8630 if (!persis_offset && i < CTL_MAX_INITIATORS) 8631 lun->pending_sense[i].ua_pending |= 8632 CTL_UA_RES_PREEMPT; 8633 else if (persis_offset && i >= persis_offset) 8634 lun->pending_sense[i-persis_offset 8635 ].ua_pending |= CTL_UA_RES_PREEMPT; 8636 8637 memset(&lun->per_res[i].res_key, 8638 0, sizeof(struct scsi_per_res_key)); 8639 lun->per_res[i].registered = 0; 8640 } 8641 lun->PRGeneration++; 8642 mtx_unlock(&lun->lun_lock); 8643 persis_io.hdr.nexus = ctsio->io_hdr.nexus; 8644 persis_io.hdr.msg_type = CTL_MSG_PERS_ACTION; 8645 persis_io.pr.pr_info.action = CTL_PR_CLEAR; 8646 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, &persis_io, 8647 sizeof(persis_io), 0)) > CTL_HA_STATUS_SUCCESS) { 8648 printf("CTL:Persis Out error returned from " 8649 "ctl_ha_msg_send %d\n", isc_retval); 8650 } 8651 break; 8652 8653 case SPRO_PREEMPT: { 8654 int nretval; 8655 8656 nretval = ctl_pro_preempt(softc, lun, res_key, sa_res_key, type, 8657 residx, ctsio, cdb, param); 8658 if (nretval != 0) 8659 return (CTL_RETVAL_COMPLETE); 8660 break; 8661 } 8662 default: 8663 panic("Invalid PR type %x", cdb->action); 8664 } 8665 8666done: 8667 free(ctsio->kern_data_ptr, M_CTL); 8668 ctl_set_success(ctsio); 8669 ctl_done((union ctl_io *)ctsio); 8670 8671 return (retval); 8672} 8673 8674/* 8675 * This routine is for handling a message from the other SC pertaining to 8676 * persistent reserve out. All the error checking will have been done 8677 * so only perorming the action need be done here to keep the two 8678 * in sync. 8679 */ 8680static void 8681ctl_hndl_per_res_out_on_other_sc(union ctl_ha_msg *msg) 8682{ 8683 struct ctl_lun *lun; 8684 struct ctl_softc *softc; 8685 int i; 8686 uint32_t targ_lun; 8687 8688 softc = control_softc; 8689 8690 targ_lun = msg->hdr.nexus.targ_mapped_lun; 8691 lun = softc->ctl_luns[targ_lun]; 8692 mtx_lock(&lun->lun_lock); 8693 switch(msg->pr.pr_info.action) { 8694 case CTL_PR_REG_KEY: 8695 if (!lun->per_res[msg->pr.pr_info.residx].registered) { 8696 lun->per_res[msg->pr.pr_info.residx].registered = 1; 8697 lun->pr_key_count++; 8698 } 8699 lun->PRGeneration++; 8700 memcpy(&lun->per_res[msg->pr.pr_info.residx].res_key, 8701 msg->pr.pr_info.sa_res_key, 8702 sizeof(struct scsi_per_res_key)); 8703 break; 8704 8705 case CTL_PR_UNREG_KEY: 8706 lun->per_res[msg->pr.pr_info.residx].registered = 0; 8707 memset(&lun->per_res[msg->pr.pr_info.residx].res_key, 8708 0, sizeof(struct scsi_per_res_key)); 8709 lun->pr_key_count--; 8710 8711 /* XXX Need to see if the reservation has been released */ 8712 /* if so do we need to generate UA? */ 8713 if (msg->pr.pr_info.residx == lun->pr_res_idx) { 8714 lun->flags &= ~CTL_LUN_PR_RESERVED; 8715 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8716 8717 if ((lun->res_type == SPR_TYPE_WR_EX_RO 8718 || lun->res_type == SPR_TYPE_EX_AC_RO) 8719 && lun->pr_key_count) { 8720 /* 8721 * If the reservation is a registrants 8722 * only type we need to generate a UA 8723 * for other registered inits. The 8724 * sense code should be RESERVATIONS 8725 * RELEASED 8726 */ 8727 8728 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 8729 if (lun->per_res[i+ 8730 persis_offset].registered == 0) 8731 continue; 8732 8733 lun->pending_sense[i 8734 ].ua_pending |= 8735 CTL_UA_RES_RELEASE; 8736 } 8737 } 8738 lun->res_type = 0; 8739 } else if (lun->pr_res_idx == CTL_PR_ALL_REGISTRANTS) { 8740 if (lun->pr_key_count==0) { 8741 lun->flags &= ~CTL_LUN_PR_RESERVED; 8742 lun->res_type = 0; 8743 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8744 } 8745 } 8746 lun->PRGeneration++; 8747 break; 8748 8749 case CTL_PR_RESERVE: 8750 lun->flags |= CTL_LUN_PR_RESERVED; 8751 lun->res_type = msg->pr.pr_info.res_type; 8752 lun->pr_res_idx = msg->pr.pr_info.residx; 8753 8754 break; 8755 8756 case CTL_PR_RELEASE: 8757 /* 8758 * if this isn't an exclusive access res generate UA for all 8759 * other registrants. 8760 */ 8761 if (lun->res_type != SPR_TYPE_EX_AC 8762 && lun->res_type != SPR_TYPE_WR_EX) { 8763 for (i = 0; i < CTL_MAX_INITIATORS; i++) 8764 if (lun->per_res[i+persis_offset].registered) 8765 lun->pending_sense[i].ua_pending |= 8766 CTL_UA_RES_RELEASE; 8767 } 8768 8769 lun->flags &= ~CTL_LUN_PR_RESERVED; 8770 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8771 lun->res_type = 0; 8772 break; 8773 8774 case CTL_PR_PREEMPT: 8775 ctl_pro_preempt_other(lun, msg); 8776 break; 8777 case CTL_PR_CLEAR: 8778 lun->flags &= ~CTL_LUN_PR_RESERVED; 8779 lun->res_type = 0; 8780 lun->pr_key_count = 0; 8781 lun->pr_res_idx = CTL_PR_NO_RESERVATION; 8782 8783 for (i=0; i < 2*CTL_MAX_INITIATORS; i++) { 8784 if (lun->per_res[i].registered == 0) 8785 continue; 8786 if (!persis_offset 8787 && i < CTL_MAX_INITIATORS) 8788 lun->pending_sense[i].ua_pending |= 8789 CTL_UA_RES_PREEMPT; 8790 else if (persis_offset 8791 && i >= persis_offset) 8792 lun->pending_sense[i-persis_offset].ua_pending|= 8793 CTL_UA_RES_PREEMPT; 8794 memset(&lun->per_res[i].res_key, 0, 8795 sizeof(struct scsi_per_res_key)); 8796 lun->per_res[i].registered = 0; 8797 } 8798 lun->PRGeneration++; 8799 break; 8800 } 8801 8802 mtx_unlock(&lun->lun_lock); 8803} 8804 8805int 8806ctl_read_write(struct ctl_scsiio *ctsio) 8807{ 8808 struct ctl_lun *lun; 8809 struct ctl_lba_len_flags *lbalen; 8810 uint64_t lba; 8811 uint32_t num_blocks; 8812 int fua, dpo; 8813 int retval; 8814 int isread; 8815 8816 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 8817 8818 CTL_DEBUG_PRINT(("ctl_read_write: command: %#x\n", ctsio->cdb[0])); 8819 8820 fua = 0; 8821 dpo = 0; 8822 8823 retval = CTL_RETVAL_COMPLETE; 8824 8825 isread = ctsio->cdb[0] == READ_6 || ctsio->cdb[0] == READ_10 8826 || ctsio->cdb[0] == READ_12 || ctsio->cdb[0] == READ_16; 8827 if (lun->flags & CTL_LUN_PR_RESERVED && isread) { 8828 uint32_t residx; 8829 8830 /* 8831 * XXX KDM need a lock here. 8832 */ 8833 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 8834 if ((lun->res_type == SPR_TYPE_EX_AC 8835 && residx != lun->pr_res_idx) 8836 || ((lun->res_type == SPR_TYPE_EX_AC_RO 8837 || lun->res_type == SPR_TYPE_EX_AC_AR) 8838 && !lun->per_res[residx].registered)) { 8839 ctl_set_reservation_conflict(ctsio); 8840 ctl_done((union ctl_io *)ctsio); 8841 return (CTL_RETVAL_COMPLETE); 8842 } 8843 } 8844 8845 switch (ctsio->cdb[0]) { 8846 case READ_6: 8847 case WRITE_6: { 8848 struct scsi_rw_6 *cdb; 8849 8850 cdb = (struct scsi_rw_6 *)ctsio->cdb; 8851 8852 lba = scsi_3btoul(cdb->addr); 8853 /* only 5 bits are valid in the most significant address byte */ 8854 lba &= 0x1fffff; 8855 num_blocks = cdb->length; 8856 /* 8857 * This is correct according to SBC-2. 8858 */ 8859 if (num_blocks == 0) 8860 num_blocks = 256; 8861 break; 8862 } 8863 case READ_10: 8864 case WRITE_10: { 8865 struct scsi_rw_10 *cdb; 8866 8867 cdb = (struct scsi_rw_10 *)ctsio->cdb; 8868 8869 if (cdb->byte2 & SRW10_FUA) 8870 fua = 1; 8871 if (cdb->byte2 & SRW10_DPO) 8872 dpo = 1; 8873 8874 lba = scsi_4btoul(cdb->addr); 8875 num_blocks = scsi_2btoul(cdb->length); 8876 break; 8877 } 8878 case WRITE_VERIFY_10: { 8879 struct scsi_write_verify_10 *cdb; 8880 8881 cdb = (struct scsi_write_verify_10 *)ctsio->cdb; 8882 8883 /* 8884 * XXX KDM we should do actual write verify support at some 8885 * point. This is obviously fake, we're just translating 8886 * things to a write. So we don't even bother checking the 8887 * BYTCHK field, since we don't do any verification. If 8888 * the user asks for it, we'll just pretend we did it. 8889 */ 8890 if (cdb->byte2 & SWV_DPO) 8891 dpo = 1; 8892 8893 lba = scsi_4btoul(cdb->addr); 8894 num_blocks = scsi_2btoul(cdb->length); 8895 break; 8896 } 8897 case READ_12: 8898 case WRITE_12: { 8899 struct scsi_rw_12 *cdb; 8900 8901 cdb = (struct scsi_rw_12 *)ctsio->cdb; 8902 8903 if (cdb->byte2 & SRW12_FUA) 8904 fua = 1; 8905 if (cdb->byte2 & SRW12_DPO) 8906 dpo = 1; 8907 lba = scsi_4btoul(cdb->addr); 8908 num_blocks = scsi_4btoul(cdb->length); 8909 break; 8910 } 8911 case WRITE_VERIFY_12: { 8912 struct scsi_write_verify_12 *cdb; 8913 8914 cdb = (struct scsi_write_verify_12 *)ctsio->cdb; 8915 8916 if (cdb->byte2 & SWV_DPO) 8917 dpo = 1; 8918 8919 lba = scsi_4btoul(cdb->addr); 8920 num_blocks = scsi_4btoul(cdb->length); 8921 8922 break; 8923 } 8924 case READ_16: 8925 case WRITE_16: { 8926 struct scsi_rw_16 *cdb; 8927 8928 cdb = (struct scsi_rw_16 *)ctsio->cdb; 8929 8930 if (cdb->byte2 & SRW12_FUA) 8931 fua = 1; 8932 if (cdb->byte2 & SRW12_DPO) 8933 dpo = 1; 8934 8935 lba = scsi_8btou64(cdb->addr); 8936 num_blocks = scsi_4btoul(cdb->length); 8937 break; 8938 } 8939 case WRITE_VERIFY_16: { 8940 struct scsi_write_verify_16 *cdb; 8941 8942 cdb = (struct scsi_write_verify_16 *)ctsio->cdb; 8943 8944 if (cdb->byte2 & SWV_DPO) 8945 dpo = 1; 8946 8947 lba = scsi_8btou64(cdb->addr); 8948 num_blocks = scsi_4btoul(cdb->length); 8949 break; 8950 } 8951 default: 8952 /* 8953 * We got a command we don't support. This shouldn't 8954 * happen, commands should be filtered out above us. 8955 */ 8956 ctl_set_invalid_opcode(ctsio); 8957 ctl_done((union ctl_io *)ctsio); 8958 8959 return (CTL_RETVAL_COMPLETE); 8960 break; /* NOTREACHED */ 8961 } 8962 8963 /* 8964 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 8965 * interesting for us, but if RAIDCore is in write-back mode, 8966 * getting it to do write-through for a particular transaction may 8967 * not be possible. 8968 */ 8969 8970 /* 8971 * The first check is to make sure we're in bounds, the second 8972 * check is to catch wrap-around problems. If the lba + num blocks 8973 * is less than the lba, then we've wrapped around and the block 8974 * range is invalid anyway. 8975 */ 8976 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 8977 || ((lba + num_blocks) < lba)) { 8978 ctl_set_lba_out_of_range(ctsio); 8979 ctl_done((union ctl_io *)ctsio); 8980 return (CTL_RETVAL_COMPLETE); 8981 } 8982 8983 /* 8984 * According to SBC-3, a transfer length of 0 is not an error. 8985 * Note that this cannot happen with WRITE(6) or READ(6), since 0 8986 * translates to 256 blocks for those commands. 8987 */ 8988 if (num_blocks == 0) { 8989 ctl_set_success(ctsio); 8990 ctl_done((union ctl_io *)ctsio); 8991 return (CTL_RETVAL_COMPLETE); 8992 } 8993 8994 lbalen = (struct ctl_lba_len_flags *) 8995 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 8996 lbalen->lba = lba; 8997 lbalen->len = num_blocks; 8998 lbalen->flags = isread ? CTL_LLF_READ : CTL_LLF_WRITE; 8999 9000 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 9001 ctsio->kern_rel_offset = 0; 9002 9003 CTL_DEBUG_PRINT(("ctl_read_write: calling data_submit()\n")); 9004 9005 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9006 9007 return (retval); 9008} 9009 9010static int 9011ctl_cnw_cont(union ctl_io *io) 9012{ 9013 struct ctl_scsiio *ctsio; 9014 struct ctl_lun *lun; 9015 struct ctl_lba_len_flags *lbalen; 9016 int retval; 9017 9018 ctsio = &io->scsiio; 9019 ctsio->io_hdr.status = CTL_STATUS_NONE; 9020 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_CONT; 9021 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9022 lbalen = (struct ctl_lba_len_flags *) 9023 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9024 lbalen->flags = CTL_LLF_WRITE; 9025 9026 CTL_DEBUG_PRINT(("ctl_cnw_cont: calling data_submit()\n")); 9027 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9028 return (retval); 9029} 9030 9031int 9032ctl_cnw(struct ctl_scsiio *ctsio) 9033{ 9034 struct ctl_lun *lun; 9035 struct ctl_lba_len_flags *lbalen; 9036 uint64_t lba; 9037 uint32_t num_blocks; 9038 int fua, dpo; 9039 int retval; 9040 9041 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9042 9043 CTL_DEBUG_PRINT(("ctl_cnw: command: %#x\n", ctsio->cdb[0])); 9044 9045 fua = 0; 9046 dpo = 0; 9047 9048 retval = CTL_RETVAL_COMPLETE; 9049 9050 switch (ctsio->cdb[0]) { 9051 case COMPARE_AND_WRITE: { 9052 struct scsi_compare_and_write *cdb; 9053 9054 cdb = (struct scsi_compare_and_write *)ctsio->cdb; 9055 9056 if (cdb->byte2 & SRW10_FUA) 9057 fua = 1; 9058 if (cdb->byte2 & SRW10_DPO) 9059 dpo = 1; 9060 lba = scsi_8btou64(cdb->addr); 9061 num_blocks = cdb->length; 9062 break; 9063 } 9064 default: 9065 /* 9066 * We got a command we don't support. This shouldn't 9067 * happen, commands should be filtered out above us. 9068 */ 9069 ctl_set_invalid_opcode(ctsio); 9070 ctl_done((union ctl_io *)ctsio); 9071 9072 return (CTL_RETVAL_COMPLETE); 9073 break; /* NOTREACHED */ 9074 } 9075 9076 /* 9077 * XXX KDM what do we do with the DPO and FUA bits? FUA might be 9078 * interesting for us, but if RAIDCore is in write-back mode, 9079 * getting it to do write-through for a particular transaction may 9080 * not be possible. 9081 */ 9082 9083 /* 9084 * The first check is to make sure we're in bounds, the second 9085 * check is to catch wrap-around problems. If the lba + num blocks 9086 * is less than the lba, then we've wrapped around and the block 9087 * range is invalid anyway. 9088 */ 9089 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9090 || ((lba + num_blocks) < lba)) { 9091 ctl_set_lba_out_of_range(ctsio); 9092 ctl_done((union ctl_io *)ctsio); 9093 return (CTL_RETVAL_COMPLETE); 9094 } 9095 9096 /* 9097 * According to SBC-3, a transfer length of 0 is not an error. 9098 */ 9099 if (num_blocks == 0) { 9100 ctl_set_success(ctsio); 9101 ctl_done((union ctl_io *)ctsio); 9102 return (CTL_RETVAL_COMPLETE); 9103 } 9104 9105 ctsio->kern_total_len = 2 * num_blocks * lun->be_lun->blocksize; 9106 ctsio->kern_rel_offset = 0; 9107 9108 /* 9109 * Set the IO_CONT flag, so that if this I/O gets passed to 9110 * ctl_data_submit_done(), it'll get passed back to 9111 * ctl_ctl_cnw_cont() for further processing. 9112 */ 9113 ctsio->io_hdr.flags |= CTL_FLAG_IO_CONT; 9114 ctsio->io_cont = ctl_cnw_cont; 9115 9116 lbalen = (struct ctl_lba_len_flags *) 9117 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9118 lbalen->lba = lba; 9119 lbalen->len = num_blocks; 9120 lbalen->flags = CTL_LLF_COMPARE; 9121 9122 CTL_DEBUG_PRINT(("ctl_cnw: calling data_submit()\n")); 9123 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9124 return (retval); 9125} 9126 9127int 9128ctl_verify(struct ctl_scsiio *ctsio) 9129{ 9130 struct ctl_lun *lun; 9131 struct ctl_lba_len_flags *lbalen; 9132 uint64_t lba; 9133 uint32_t num_blocks; 9134 int bytchk, dpo; 9135 int retval; 9136 9137 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9138 9139 CTL_DEBUG_PRINT(("ctl_verify: command: %#x\n", ctsio->cdb[0])); 9140 9141 bytchk = 0; 9142 dpo = 0; 9143 retval = CTL_RETVAL_COMPLETE; 9144 9145 switch (ctsio->cdb[0]) { 9146 case VERIFY_10: { 9147 struct scsi_verify_10 *cdb; 9148 9149 cdb = (struct scsi_verify_10 *)ctsio->cdb; 9150 if (cdb->byte2 & SVFY_BYTCHK) 9151 bytchk = 1; 9152 if (cdb->byte2 & SVFY_DPO) 9153 dpo = 1; 9154 lba = scsi_4btoul(cdb->addr); 9155 num_blocks = scsi_2btoul(cdb->length); 9156 break; 9157 } 9158 case VERIFY_12: { 9159 struct scsi_verify_12 *cdb; 9160 9161 cdb = (struct scsi_verify_12 *)ctsio->cdb; 9162 if (cdb->byte2 & SVFY_BYTCHK) 9163 bytchk = 1; 9164 if (cdb->byte2 & SVFY_DPO) 9165 dpo = 1; 9166 lba = scsi_4btoul(cdb->addr); 9167 num_blocks = scsi_4btoul(cdb->length); 9168 break; 9169 } 9170 case VERIFY_16: { 9171 struct scsi_rw_16 *cdb; 9172 9173 cdb = (struct scsi_rw_16 *)ctsio->cdb; 9174 if (cdb->byte2 & SVFY_BYTCHK) 9175 bytchk = 1; 9176 if (cdb->byte2 & SVFY_DPO) 9177 dpo = 1; 9178 lba = scsi_8btou64(cdb->addr); 9179 num_blocks = scsi_4btoul(cdb->length); 9180 break; 9181 } 9182 default: 9183 /* 9184 * We got a command we don't support. This shouldn't 9185 * happen, commands should be filtered out above us. 9186 */ 9187 ctl_set_invalid_opcode(ctsio); 9188 ctl_done((union ctl_io *)ctsio); 9189 return (CTL_RETVAL_COMPLETE); 9190 } 9191 9192 /* 9193 * The first check is to make sure we're in bounds, the second 9194 * check is to catch wrap-around problems. If the lba + num blocks 9195 * is less than the lba, then we've wrapped around and the block 9196 * range is invalid anyway. 9197 */ 9198 if (((lba + num_blocks) > (lun->be_lun->maxlba + 1)) 9199 || ((lba + num_blocks) < lba)) { 9200 ctl_set_lba_out_of_range(ctsio); 9201 ctl_done((union ctl_io *)ctsio); 9202 return (CTL_RETVAL_COMPLETE); 9203 } 9204 9205 /* 9206 * According to SBC-3, a transfer length of 0 is not an error. 9207 */ 9208 if (num_blocks == 0) { 9209 ctl_set_success(ctsio); 9210 ctl_done((union ctl_io *)ctsio); 9211 return (CTL_RETVAL_COMPLETE); 9212 } 9213 9214 lbalen = (struct ctl_lba_len_flags *) 9215 &ctsio->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 9216 lbalen->lba = lba; 9217 lbalen->len = num_blocks; 9218 if (bytchk) { 9219 lbalen->flags = CTL_LLF_COMPARE; 9220 ctsio->kern_total_len = num_blocks * lun->be_lun->blocksize; 9221 } else { 9222 lbalen->flags = CTL_LLF_VERIFY; 9223 ctsio->kern_total_len = 0; 9224 } 9225 ctsio->kern_rel_offset = 0; 9226 9227 CTL_DEBUG_PRINT(("ctl_verify: calling data_submit()\n")); 9228 retval = lun->backend->data_submit((union ctl_io *)ctsio); 9229 return (retval); 9230} 9231 9232int 9233ctl_report_luns(struct ctl_scsiio *ctsio) 9234{ 9235 struct scsi_report_luns *cdb; 9236 struct scsi_report_luns_data *lun_data; 9237 struct ctl_lun *lun, *request_lun; 9238 int num_luns, retval; 9239 uint32_t alloc_len, lun_datalen; 9240 int num_filled, well_known; 9241 uint32_t initidx, targ_lun_id, lun_id; 9242 9243 retval = CTL_RETVAL_COMPLETE; 9244 well_known = 0; 9245 9246 cdb = (struct scsi_report_luns *)ctsio->cdb; 9247 9248 CTL_DEBUG_PRINT(("ctl_report_luns\n")); 9249 9250 mtx_lock(&control_softc->ctl_lock); 9251 num_luns = control_softc->num_luns; 9252 mtx_unlock(&control_softc->ctl_lock); 9253 9254 switch (cdb->select_report) { 9255 case RPL_REPORT_DEFAULT: 9256 case RPL_REPORT_ALL: 9257 break; 9258 case RPL_REPORT_WELLKNOWN: 9259 well_known = 1; 9260 num_luns = 0; 9261 break; 9262 default: 9263 ctl_set_invalid_field(ctsio, 9264 /*sks_valid*/ 1, 9265 /*command*/ 1, 9266 /*field*/ 2, 9267 /*bit_valid*/ 0, 9268 /*bit*/ 0); 9269 ctl_done((union ctl_io *)ctsio); 9270 return (retval); 9271 break; /* NOTREACHED */ 9272 } 9273 9274 alloc_len = scsi_4btoul(cdb->length); 9275 /* 9276 * The initiator has to allocate at least 16 bytes for this request, 9277 * so he can at least get the header and the first LUN. Otherwise 9278 * we reject the request (per SPC-3 rev 14, section 6.21). 9279 */ 9280 if (alloc_len < (sizeof(struct scsi_report_luns_data) + 9281 sizeof(struct scsi_report_luns_lundata))) { 9282 ctl_set_invalid_field(ctsio, 9283 /*sks_valid*/ 1, 9284 /*command*/ 1, 9285 /*field*/ 6, 9286 /*bit_valid*/ 0, 9287 /*bit*/ 0); 9288 ctl_done((union ctl_io *)ctsio); 9289 return (retval); 9290 } 9291 9292 request_lun = (struct ctl_lun *) 9293 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9294 9295 lun_datalen = sizeof(*lun_data) + 9296 (num_luns * sizeof(struct scsi_report_luns_lundata)); 9297 9298 ctsio->kern_data_ptr = malloc(lun_datalen, M_CTL, M_WAITOK | M_ZERO); 9299 lun_data = (struct scsi_report_luns_data *)ctsio->kern_data_ptr; 9300 ctsio->kern_sg_entries = 0; 9301 9302 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9303 9304 mtx_lock(&control_softc->ctl_lock); 9305 for (targ_lun_id = 0, num_filled = 0; targ_lun_id < CTL_MAX_LUNS && num_filled < num_luns; targ_lun_id++) { 9306 lun_id = ctl_map_lun(ctsio->io_hdr.nexus.targ_port, targ_lun_id); 9307 if (lun_id >= CTL_MAX_LUNS) 9308 continue; 9309 lun = control_softc->ctl_luns[lun_id]; 9310 if (lun == NULL) 9311 continue; 9312 9313 if (targ_lun_id <= 0xff) { 9314 /* 9315 * Peripheral addressing method, bus number 0. 9316 */ 9317 lun_data->luns[num_filled].lundata[0] = 9318 RPL_LUNDATA_ATYP_PERIPH; 9319 lun_data->luns[num_filled].lundata[1] = targ_lun_id; 9320 num_filled++; 9321 } else if (targ_lun_id <= 0x3fff) { 9322 /* 9323 * Flat addressing method. 9324 */ 9325 lun_data->luns[num_filled].lundata[0] = 9326 RPL_LUNDATA_ATYP_FLAT | 9327 (targ_lun_id & RPL_LUNDATA_FLAT_LUN_MASK); 9328#ifdef OLDCTLHEADERS 9329 (SRLD_ADDR_FLAT << SRLD_ADDR_SHIFT) | 9330 (targ_lun_id & SRLD_BUS_LUN_MASK); 9331#endif 9332 lun_data->luns[num_filled].lundata[1] = 9333#ifdef OLDCTLHEADERS 9334 targ_lun_id >> SRLD_BUS_LUN_BITS; 9335#endif 9336 targ_lun_id >> RPL_LUNDATA_FLAT_LUN_BITS; 9337 num_filled++; 9338 } else { 9339 printf("ctl_report_luns: bogus LUN number %jd, " 9340 "skipping\n", (intmax_t)targ_lun_id); 9341 } 9342 /* 9343 * According to SPC-3, rev 14 section 6.21: 9344 * 9345 * "The execution of a REPORT LUNS command to any valid and 9346 * installed logical unit shall clear the REPORTED LUNS DATA 9347 * HAS CHANGED unit attention condition for all logical 9348 * units of that target with respect to the requesting 9349 * initiator. A valid and installed logical unit is one 9350 * having a PERIPHERAL QUALIFIER of 000b in the standard 9351 * INQUIRY data (see 6.4.2)." 9352 * 9353 * If request_lun is NULL, the LUN this report luns command 9354 * was issued to is either disabled or doesn't exist. In that 9355 * case, we shouldn't clear any pending lun change unit 9356 * attention. 9357 */ 9358 if (request_lun != NULL) { 9359 mtx_lock(&lun->lun_lock); 9360 lun->pending_sense[initidx].ua_pending &= 9361 ~CTL_UA_LUN_CHANGE; 9362 mtx_unlock(&lun->lun_lock); 9363 } 9364 } 9365 mtx_unlock(&control_softc->ctl_lock); 9366 9367 /* 9368 * It's quite possible that we've returned fewer LUNs than we allocated 9369 * space for. Trim it. 9370 */ 9371 lun_datalen = sizeof(*lun_data) + 9372 (num_filled * sizeof(struct scsi_report_luns_lundata)); 9373 9374 if (lun_datalen < alloc_len) { 9375 ctsio->residual = alloc_len - lun_datalen; 9376 ctsio->kern_data_len = lun_datalen; 9377 ctsio->kern_total_len = lun_datalen; 9378 } else { 9379 ctsio->residual = 0; 9380 ctsio->kern_data_len = alloc_len; 9381 ctsio->kern_total_len = alloc_len; 9382 } 9383 ctsio->kern_data_resid = 0; 9384 ctsio->kern_rel_offset = 0; 9385 ctsio->kern_sg_entries = 0; 9386 9387 /* 9388 * We set this to the actual data length, regardless of how much 9389 * space we actually have to return results. If the user looks at 9390 * this value, he'll know whether or not he allocated enough space 9391 * and reissue the command if necessary. We don't support well 9392 * known logical units, so if the user asks for that, return none. 9393 */ 9394 scsi_ulto4b(lun_datalen - 8, lun_data->length); 9395 9396 /* 9397 * We can only return SCSI_STATUS_CHECK_COND when we can't satisfy 9398 * this request. 9399 */ 9400 ctsio->scsi_status = SCSI_STATUS_OK; 9401 9402 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9403 ctsio->be_move_done = ctl_config_move_done; 9404 ctl_datamove((union ctl_io *)ctsio); 9405 9406 return (retval); 9407} 9408 9409int 9410ctl_request_sense(struct ctl_scsiio *ctsio) 9411{ 9412 struct scsi_request_sense *cdb; 9413 struct scsi_sense_data *sense_ptr; 9414 struct ctl_lun *lun; 9415 uint32_t initidx; 9416 int have_error; 9417 scsi_sense_data_type sense_format; 9418 9419 cdb = (struct scsi_request_sense *)ctsio->cdb; 9420 9421 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9422 9423 CTL_DEBUG_PRINT(("ctl_request_sense\n")); 9424 9425 /* 9426 * Determine which sense format the user wants. 9427 */ 9428 if (cdb->byte2 & SRS_DESC) 9429 sense_format = SSD_TYPE_DESC; 9430 else 9431 sense_format = SSD_TYPE_FIXED; 9432 9433 ctsio->kern_data_ptr = malloc(sizeof(*sense_ptr), M_CTL, M_WAITOK); 9434 sense_ptr = (struct scsi_sense_data *)ctsio->kern_data_ptr; 9435 ctsio->kern_sg_entries = 0; 9436 9437 /* 9438 * struct scsi_sense_data, which is currently set to 256 bytes, is 9439 * larger than the largest allowed value for the length field in the 9440 * REQUEST SENSE CDB, which is 252 bytes as of SPC-4. 9441 */ 9442 ctsio->residual = 0; 9443 ctsio->kern_data_len = cdb->length; 9444 ctsio->kern_total_len = cdb->length; 9445 9446 ctsio->kern_data_resid = 0; 9447 ctsio->kern_rel_offset = 0; 9448 ctsio->kern_sg_entries = 0; 9449 9450 /* 9451 * If we don't have a LUN, we don't have any pending sense. 9452 */ 9453 if (lun == NULL) 9454 goto no_sense; 9455 9456 have_error = 0; 9457 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 9458 /* 9459 * Check for pending sense, and then for pending unit attentions. 9460 * Pending sense gets returned first, then pending unit attentions. 9461 */ 9462 mtx_lock(&lun->lun_lock); 9463 if (ctl_is_set(lun->have_ca, initidx)) { 9464 scsi_sense_data_type stored_format; 9465 9466 /* 9467 * Check to see which sense format was used for the stored 9468 * sense data. 9469 */ 9470 stored_format = scsi_sense_type( 9471 &lun->pending_sense[initidx].sense); 9472 9473 /* 9474 * If the user requested a different sense format than the 9475 * one we stored, then we need to convert it to the other 9476 * format. If we're going from descriptor to fixed format 9477 * sense data, we may lose things in translation, depending 9478 * on what options were used. 9479 * 9480 * If the stored format is SSD_TYPE_NONE (i.e. invalid), 9481 * for some reason we'll just copy it out as-is. 9482 */ 9483 if ((stored_format == SSD_TYPE_FIXED) 9484 && (sense_format == SSD_TYPE_DESC)) 9485 ctl_sense_to_desc((struct scsi_sense_data_fixed *) 9486 &lun->pending_sense[initidx].sense, 9487 (struct scsi_sense_data_desc *)sense_ptr); 9488 else if ((stored_format == SSD_TYPE_DESC) 9489 && (sense_format == SSD_TYPE_FIXED)) 9490 ctl_sense_to_fixed((struct scsi_sense_data_desc *) 9491 &lun->pending_sense[initidx].sense, 9492 (struct scsi_sense_data_fixed *)sense_ptr); 9493 else 9494 memcpy(sense_ptr, &lun->pending_sense[initidx].sense, 9495 ctl_min(sizeof(*sense_ptr), 9496 sizeof(lun->pending_sense[initidx].sense))); 9497 9498 ctl_clear_mask(lun->have_ca, initidx); 9499 have_error = 1; 9500 } else if (lun->pending_sense[initidx].ua_pending != CTL_UA_NONE) { 9501 ctl_ua_type ua_type; 9502 9503 ua_type = ctl_build_ua(lun->pending_sense[initidx].ua_pending, 9504 sense_ptr, sense_format); 9505 if (ua_type != CTL_UA_NONE) { 9506 have_error = 1; 9507 /* We're reporting this UA, so clear it */ 9508 lun->pending_sense[initidx].ua_pending &= ~ua_type; 9509 } 9510 } 9511 mtx_unlock(&lun->lun_lock); 9512 9513 /* 9514 * We already have a pending error, return it. 9515 */ 9516 if (have_error != 0) { 9517 /* 9518 * We report the SCSI status as OK, since the status of the 9519 * request sense command itself is OK. 9520 */ 9521 ctsio->scsi_status = SCSI_STATUS_OK; 9522 9523 /* 9524 * We report 0 for the sense length, because we aren't doing 9525 * autosense in this case. We're reporting sense as 9526 * parameter data. 9527 */ 9528 ctsio->sense_len = 0; 9529 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9530 ctsio->be_move_done = ctl_config_move_done; 9531 ctl_datamove((union ctl_io *)ctsio); 9532 9533 return (CTL_RETVAL_COMPLETE); 9534 } 9535 9536no_sense: 9537 9538 /* 9539 * No sense information to report, so we report that everything is 9540 * okay. 9541 */ 9542 ctl_set_sense_data(sense_ptr, 9543 lun, 9544 sense_format, 9545 /*current_error*/ 1, 9546 /*sense_key*/ SSD_KEY_NO_SENSE, 9547 /*asc*/ 0x00, 9548 /*ascq*/ 0x00, 9549 SSD_ELEM_NONE); 9550 9551 ctsio->scsi_status = SCSI_STATUS_OK; 9552 9553 /* 9554 * We report 0 for the sense length, because we aren't doing 9555 * autosense in this case. We're reporting sense as parameter data. 9556 */ 9557 ctsio->sense_len = 0; 9558 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9559 ctsio->be_move_done = ctl_config_move_done; 9560 ctl_datamove((union ctl_io *)ctsio); 9561 9562 return (CTL_RETVAL_COMPLETE); 9563} 9564 9565int 9566ctl_tur(struct ctl_scsiio *ctsio) 9567{ 9568 struct ctl_lun *lun; 9569 9570 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9571 9572 CTL_DEBUG_PRINT(("ctl_tur\n")); 9573 9574 if (lun == NULL) 9575 return (EINVAL); 9576 9577 ctsio->scsi_status = SCSI_STATUS_OK; 9578 ctsio->io_hdr.status = CTL_SUCCESS; 9579 9580 ctl_done((union ctl_io *)ctsio); 9581 9582 return (CTL_RETVAL_COMPLETE); 9583} 9584 9585#ifdef notyet 9586static int 9587ctl_cmddt_inquiry(struct ctl_scsiio *ctsio) 9588{ 9589 9590} 9591#endif 9592 9593static int 9594ctl_inquiry_evpd_supported(struct ctl_scsiio *ctsio, int alloc_len) 9595{ 9596 struct scsi_vpd_supported_pages *pages; 9597 int sup_page_size; 9598 struct ctl_lun *lun; 9599 9600 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9601 9602 sup_page_size = sizeof(struct scsi_vpd_supported_pages) * 9603 SCSI_EVPD_NUM_SUPPORTED_PAGES; 9604 ctsio->kern_data_ptr = malloc(sup_page_size, M_CTL, M_WAITOK | M_ZERO); 9605 pages = (struct scsi_vpd_supported_pages *)ctsio->kern_data_ptr; 9606 ctsio->kern_sg_entries = 0; 9607 9608 if (sup_page_size < alloc_len) { 9609 ctsio->residual = alloc_len - sup_page_size; 9610 ctsio->kern_data_len = sup_page_size; 9611 ctsio->kern_total_len = sup_page_size; 9612 } else { 9613 ctsio->residual = 0; 9614 ctsio->kern_data_len = alloc_len; 9615 ctsio->kern_total_len = alloc_len; 9616 } 9617 ctsio->kern_data_resid = 0; 9618 ctsio->kern_rel_offset = 0; 9619 ctsio->kern_sg_entries = 0; 9620 9621 /* 9622 * The control device is always connected. The disk device, on the 9623 * other hand, may not be online all the time. Need to change this 9624 * to figure out whether the disk device is actually online or not. 9625 */ 9626 if (lun != NULL) 9627 pages->device = (SID_QUAL_LU_CONNECTED << 5) | 9628 lun->be_lun->lun_type; 9629 else 9630 pages->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9631 9632 pages->length = SCSI_EVPD_NUM_SUPPORTED_PAGES; 9633 /* Supported VPD pages */ 9634 pages->page_list[0] = SVPD_SUPPORTED_PAGES; 9635 /* Serial Number */ 9636 pages->page_list[1] = SVPD_UNIT_SERIAL_NUMBER; 9637 /* Device Identification */ 9638 pages->page_list[2] = SVPD_DEVICE_ID; 9639 /* SCSI Ports */ 9640 pages->page_list[3] = SVPD_SCSI_PORTS; 9641 /* Block limits */ 9642 pages->page_list[4] = SVPD_BLOCK_LIMITS; 9643 /* Logical Block Provisioning */ 9644 pages->page_list[5] = SVPD_LBP; 9645 9646 ctsio->scsi_status = SCSI_STATUS_OK; 9647 9648 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9649 ctsio->be_move_done = ctl_config_move_done; 9650 ctl_datamove((union ctl_io *)ctsio); 9651 9652 return (CTL_RETVAL_COMPLETE); 9653} 9654 9655static int 9656ctl_inquiry_evpd_serial(struct ctl_scsiio *ctsio, int alloc_len) 9657{ 9658 struct scsi_vpd_unit_serial_number *sn_ptr; 9659 struct ctl_lun *lun; 9660 9661 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9662 9663 ctsio->kern_data_ptr = malloc(sizeof(*sn_ptr), M_CTL, M_WAITOK | M_ZERO); 9664 sn_ptr = (struct scsi_vpd_unit_serial_number *)ctsio->kern_data_ptr; 9665 ctsio->kern_sg_entries = 0; 9666 9667 if (sizeof(*sn_ptr) < alloc_len) { 9668 ctsio->residual = alloc_len - sizeof(*sn_ptr); 9669 ctsio->kern_data_len = sizeof(*sn_ptr); 9670 ctsio->kern_total_len = sizeof(*sn_ptr); 9671 } else { 9672 ctsio->residual = 0; 9673 ctsio->kern_data_len = alloc_len; 9674 ctsio->kern_total_len = alloc_len; 9675 } 9676 ctsio->kern_data_resid = 0; 9677 ctsio->kern_rel_offset = 0; 9678 ctsio->kern_sg_entries = 0; 9679 9680 /* 9681 * The control device is always connected. The disk device, on the 9682 * other hand, may not be online all the time. Need to change this 9683 * to figure out whether the disk device is actually online or not. 9684 */ 9685 if (lun != NULL) 9686 sn_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9687 lun->be_lun->lun_type; 9688 else 9689 sn_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9690 9691 sn_ptr->page_code = SVPD_UNIT_SERIAL_NUMBER; 9692 sn_ptr->length = ctl_min(sizeof(*sn_ptr) - 4, CTL_SN_LEN); 9693 /* 9694 * If we don't have a LUN, we just leave the serial number as 9695 * all spaces. 9696 */ 9697 memset(sn_ptr->serial_num, 0x20, sizeof(sn_ptr->serial_num)); 9698 if (lun != NULL) { 9699 strncpy((char *)sn_ptr->serial_num, 9700 (char *)lun->be_lun->serial_num, CTL_SN_LEN); 9701 } 9702 ctsio->scsi_status = SCSI_STATUS_OK; 9703 9704 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9705 ctsio->be_move_done = ctl_config_move_done; 9706 ctl_datamove((union ctl_io *)ctsio); 9707 9708 return (CTL_RETVAL_COMPLETE); 9709} 9710 9711 9712static int 9713ctl_inquiry_evpd_devid(struct ctl_scsiio *ctsio, int alloc_len) 9714{ 9715 struct scsi_vpd_device_id *devid_ptr; 9716 struct scsi_vpd_id_descriptor *desc; 9717 struct ctl_softc *ctl_softc; 9718 struct ctl_lun *lun; 9719 struct ctl_port *port; 9720 int data_len; 9721 uint8_t proto; 9722 9723 ctl_softc = control_softc; 9724 9725 port = ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]; 9726 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9727 9728 data_len = sizeof(struct scsi_vpd_device_id) + 9729 sizeof(struct scsi_vpd_id_descriptor) + 9730 sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 9731 sizeof(struct scsi_vpd_id_descriptor) + 9732 sizeof(struct scsi_vpd_id_trgt_port_grp_id); 9733 if (lun && lun->lun_devid) 9734 data_len += lun->lun_devid->len; 9735 if (port->port_devid) 9736 data_len += port->port_devid->len; 9737 if (port->target_devid) 9738 data_len += port->target_devid->len; 9739 9740 ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO); 9741 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 9742 ctsio->kern_sg_entries = 0; 9743 9744 if (data_len < alloc_len) { 9745 ctsio->residual = alloc_len - data_len; 9746 ctsio->kern_data_len = data_len; 9747 ctsio->kern_total_len = data_len; 9748 } else { 9749 ctsio->residual = 0; 9750 ctsio->kern_data_len = alloc_len; 9751 ctsio->kern_total_len = alloc_len; 9752 } 9753 ctsio->kern_data_resid = 0; 9754 ctsio->kern_rel_offset = 0; 9755 ctsio->kern_sg_entries = 0; 9756 9757 /* 9758 * The control device is always connected. The disk device, on the 9759 * other hand, may not be online all the time. 9760 */ 9761 if (lun != NULL) 9762 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9763 lun->be_lun->lun_type; 9764 else 9765 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9766 devid_ptr->page_code = SVPD_DEVICE_ID; 9767 scsi_ulto2b(data_len - 4, devid_ptr->length); 9768 9769 if (port->port_type == CTL_PORT_FC) 9770 proto = SCSI_PROTO_FC << 4; 9771 else if (port->port_type == CTL_PORT_ISCSI) 9772 proto = SCSI_PROTO_ISCSI << 4; 9773 else 9774 proto = SCSI_PROTO_SPI << 4; 9775 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 9776 9777 /* 9778 * We're using a LUN association here. i.e., this device ID is a 9779 * per-LUN identifier. 9780 */ 9781 if (lun && lun->lun_devid) { 9782 memcpy(desc, lun->lun_devid->data, lun->lun_devid->len); 9783 desc = (struct scsi_vpd_id_descriptor *)((uint8_t *)desc + 9784 lun->lun_devid->len); 9785 } 9786 9787 /* 9788 * This is for the WWPN which is a port association. 9789 */ 9790 if (port->port_devid) { 9791 memcpy(desc, port->port_devid->data, port->port_devid->len); 9792 desc = (struct scsi_vpd_id_descriptor *)((uint8_t *)desc + 9793 port->port_devid->len); 9794 } 9795 9796 /* 9797 * This is for the Relative Target Port(type 4h) identifier 9798 */ 9799 desc->proto_codeset = proto | SVPD_ID_CODESET_BINARY; 9800 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 9801 SVPD_ID_TYPE_RELTARG; 9802 desc->length = 4; 9803 scsi_ulto2b(ctsio->io_hdr.nexus.targ_port, &desc->identifier[2]); 9804 desc = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9805 sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 9806 9807 /* 9808 * This is for the Target Port Group(type 5h) identifier 9809 */ 9810 desc->proto_codeset = proto | SVPD_ID_CODESET_BINARY; 9811 desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 9812 SVPD_ID_TYPE_TPORTGRP; 9813 desc->length = 4; 9814 scsi_ulto2b(ctsio->io_hdr.nexus.targ_port / CTL_MAX_PORTS + 1, 9815 &desc->identifier[2]); 9816 desc = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 9817 sizeof(struct scsi_vpd_id_trgt_port_grp_id)); 9818 9819 /* 9820 * This is for the Target identifier 9821 */ 9822 if (port->target_devid) { 9823 memcpy(desc, port->target_devid->data, port->target_devid->len); 9824 } 9825 9826 ctsio->scsi_status = SCSI_STATUS_OK; 9827 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9828 ctsio->be_move_done = ctl_config_move_done; 9829 ctl_datamove((union ctl_io *)ctsio); 9830 9831 return (CTL_RETVAL_COMPLETE); 9832} 9833 9834static int 9835ctl_inquiry_evpd_scsi_ports(struct ctl_scsiio *ctsio, int alloc_len) 9836{ 9837 struct ctl_softc *softc = control_softc; 9838 struct scsi_vpd_scsi_ports *sp; 9839 struct scsi_vpd_port_designation *pd; 9840 struct scsi_vpd_port_designation_cont *pdc; 9841 struct ctl_lun *lun; 9842 struct ctl_port *port; 9843 int data_len, num_target_ports, id_len, g, pg, p; 9844 int num_target_port_groups, single; 9845 9846 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9847 9848 single = ctl_is_single; 9849 if (single) 9850 num_target_port_groups = 1; 9851 else 9852 num_target_port_groups = NUM_TARGET_PORT_GROUPS; 9853 num_target_ports = 0; 9854 id_len = 0; 9855 mtx_lock(&softc->ctl_lock); 9856 STAILQ_FOREACH(port, &softc->port_list, links) { 9857 if ((port->status & CTL_PORT_STATUS_ONLINE) == 0) 9858 continue; 9859 if (ctl_map_lun_back(port->targ_port, lun->lun) >= 9860 CTL_MAX_LUNS) 9861 continue; 9862 num_target_ports++; 9863 if (port->port_devid) 9864 id_len += port->port_devid->len; 9865 } 9866 mtx_unlock(&softc->ctl_lock); 9867 9868 data_len = sizeof(struct scsi_vpd_scsi_ports) + num_target_port_groups * 9869 num_target_ports * (sizeof(struct scsi_vpd_port_designation) + 9870 sizeof(struct scsi_vpd_port_designation_cont)) + id_len; 9871 ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO); 9872 sp = (struct scsi_vpd_scsi_ports *)ctsio->kern_data_ptr; 9873 ctsio->kern_sg_entries = 0; 9874 9875 if (data_len < alloc_len) { 9876 ctsio->residual = alloc_len - data_len; 9877 ctsio->kern_data_len = data_len; 9878 ctsio->kern_total_len = data_len; 9879 } else { 9880 ctsio->residual = 0; 9881 ctsio->kern_data_len = alloc_len; 9882 ctsio->kern_total_len = alloc_len; 9883 } 9884 ctsio->kern_data_resid = 0; 9885 ctsio->kern_rel_offset = 0; 9886 ctsio->kern_sg_entries = 0; 9887 9888 /* 9889 * The control device is always connected. The disk device, on the 9890 * other hand, may not be online all the time. Need to change this 9891 * to figure out whether the disk device is actually online or not. 9892 */ 9893 if (lun != NULL) 9894 sp->device = (SID_QUAL_LU_CONNECTED << 5) | 9895 lun->be_lun->lun_type; 9896 else 9897 sp->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9898 9899 sp->page_code = SVPD_SCSI_PORTS; 9900 scsi_ulto2b(data_len - sizeof(struct scsi_vpd_scsi_ports), 9901 sp->page_length); 9902 pd = &sp->design[0]; 9903 9904 mtx_lock(&softc->ctl_lock); 9905 if (softc->flags & CTL_FLAG_MASTER_SHELF) 9906 pg = 0; 9907 else 9908 pg = 1; 9909 for (g = 0; g < num_target_port_groups; g++) { 9910 STAILQ_FOREACH(port, &softc->port_list, links) { 9911 if ((port->status & CTL_PORT_STATUS_ONLINE) == 0) 9912 continue; 9913 if (ctl_map_lun_back(port->targ_port, lun->lun) >= 9914 CTL_MAX_LUNS) 9915 continue; 9916 p = port->targ_port % CTL_MAX_PORTS + g * CTL_MAX_PORTS; 9917 scsi_ulto2b(p, pd->relative_port_id); 9918 scsi_ulto2b(0, pd->initiator_transportid_length); 9919 pdc = (struct scsi_vpd_port_designation_cont *) 9920 &pd->initiator_transportid[0]; 9921 if (port->port_devid && g == pg) { 9922 id_len = port->port_devid->len; 9923 scsi_ulto2b(port->port_devid->len, 9924 pdc->target_port_descriptors_length); 9925 memcpy(pdc->target_port_descriptors, 9926 port->port_devid->data, port->port_devid->len); 9927 } else { 9928 id_len = 0; 9929 scsi_ulto2b(0, pdc->target_port_descriptors_length); 9930 } 9931 pd = (struct scsi_vpd_port_designation *) 9932 ((uint8_t *)pdc->target_port_descriptors + id_len); 9933 } 9934 } 9935 mtx_unlock(&softc->ctl_lock); 9936 9937 ctsio->scsi_status = SCSI_STATUS_OK; 9938 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9939 ctsio->be_move_done = ctl_config_move_done; 9940 ctl_datamove((union ctl_io *)ctsio); 9941 9942 return (CTL_RETVAL_COMPLETE); 9943} 9944 9945static int 9946ctl_inquiry_evpd_block_limits(struct ctl_scsiio *ctsio, int alloc_len) 9947{ 9948 struct scsi_vpd_block_limits *bl_ptr; 9949 struct ctl_lun *lun; 9950 int bs; 9951 9952 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 9953 bs = lun->be_lun->blocksize; 9954 9955 ctsio->kern_data_ptr = malloc(sizeof(*bl_ptr), M_CTL, M_WAITOK | M_ZERO); 9956 bl_ptr = (struct scsi_vpd_block_limits *)ctsio->kern_data_ptr; 9957 ctsio->kern_sg_entries = 0; 9958 9959 if (sizeof(*bl_ptr) < alloc_len) { 9960 ctsio->residual = alloc_len - sizeof(*bl_ptr); 9961 ctsio->kern_data_len = sizeof(*bl_ptr); 9962 ctsio->kern_total_len = sizeof(*bl_ptr); 9963 } else { 9964 ctsio->residual = 0; 9965 ctsio->kern_data_len = alloc_len; 9966 ctsio->kern_total_len = alloc_len; 9967 } 9968 ctsio->kern_data_resid = 0; 9969 ctsio->kern_rel_offset = 0; 9970 ctsio->kern_sg_entries = 0; 9971 9972 /* 9973 * The control device is always connected. The disk device, on the 9974 * other hand, may not be online all the time. Need to change this 9975 * to figure out whether the disk device is actually online or not. 9976 */ 9977 if (lun != NULL) 9978 bl_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 9979 lun->be_lun->lun_type; 9980 else 9981 bl_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 9982 9983 bl_ptr->page_code = SVPD_BLOCK_LIMITS; 9984 scsi_ulto2b(sizeof(*bl_ptr), bl_ptr->page_length); 9985 bl_ptr->max_cmp_write_len = 0xff; 9986 scsi_ulto4b(0xffffffff, bl_ptr->max_txfer_len); 9987 scsi_ulto4b(MAXPHYS / bs, bl_ptr->opt_txfer_len); 9988 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) { 9989 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_lba_cnt); 9990 scsi_ulto4b(0xffffffff, bl_ptr->max_unmap_blk_cnt); 9991 } 9992 scsi_u64to8b(UINT64_MAX, bl_ptr->max_write_same_length); 9993 9994 ctsio->scsi_status = SCSI_STATUS_OK; 9995 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 9996 ctsio->be_move_done = ctl_config_move_done; 9997 ctl_datamove((union ctl_io *)ctsio); 9998 9999 return (CTL_RETVAL_COMPLETE); 10000} 10001 10002static int 10003ctl_inquiry_evpd_lbp(struct ctl_scsiio *ctsio, int alloc_len) 10004{ 10005 struct scsi_vpd_logical_block_prov *lbp_ptr; 10006 struct ctl_lun *lun; 10007 int bs; 10008 10009 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 10010 bs = lun->be_lun->blocksize; 10011 10012 ctsio->kern_data_ptr = malloc(sizeof(*lbp_ptr), M_CTL, M_WAITOK | M_ZERO); 10013 lbp_ptr = (struct scsi_vpd_logical_block_prov *)ctsio->kern_data_ptr; 10014 ctsio->kern_sg_entries = 0; 10015 10016 if (sizeof(*lbp_ptr) < alloc_len) { 10017 ctsio->residual = alloc_len - sizeof(*lbp_ptr); 10018 ctsio->kern_data_len = sizeof(*lbp_ptr); 10019 ctsio->kern_total_len = sizeof(*lbp_ptr); 10020 } else { 10021 ctsio->residual = 0; 10022 ctsio->kern_data_len = alloc_len; 10023 ctsio->kern_total_len = alloc_len; 10024 } 10025 ctsio->kern_data_resid = 0; 10026 ctsio->kern_rel_offset = 0; 10027 ctsio->kern_sg_entries = 0; 10028 10029 /* 10030 * The control device is always connected. The disk device, on the 10031 * other hand, may not be online all the time. Need to change this 10032 * to figure out whether the disk device is actually online or not. 10033 */ 10034 if (lun != NULL) 10035 lbp_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 10036 lun->be_lun->lun_type; 10037 else 10038 lbp_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 10039 10040 lbp_ptr->page_code = SVPD_LBP; 10041 if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP) 10042 lbp_ptr->flags = SVPD_LBP_UNMAP | SVPD_LBP_WS16 | SVPD_LBP_WS10; 10043 10044 ctsio->scsi_status = SCSI_STATUS_OK; 10045 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 10046 ctsio->be_move_done = ctl_config_move_done; 10047 ctl_datamove((union ctl_io *)ctsio); 10048 10049 return (CTL_RETVAL_COMPLETE); 10050} 10051 10052static int 10053ctl_inquiry_evpd(struct ctl_scsiio *ctsio) 10054{ 10055 struct scsi_inquiry *cdb; 10056 struct ctl_lun *lun; 10057 int alloc_len, retval; 10058 10059 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 10060 cdb = (struct scsi_inquiry *)ctsio->cdb; 10061 10062 retval = CTL_RETVAL_COMPLETE; 10063 10064 alloc_len = scsi_2btoul(cdb->length); 10065 10066 switch (cdb->page_code) { 10067 case SVPD_SUPPORTED_PAGES: 10068 retval = ctl_inquiry_evpd_supported(ctsio, alloc_len); 10069 break; 10070 case SVPD_UNIT_SERIAL_NUMBER: 10071 retval = ctl_inquiry_evpd_serial(ctsio, alloc_len); 10072 break; 10073 case SVPD_DEVICE_ID: 10074 retval = ctl_inquiry_evpd_devid(ctsio, alloc_len); 10075 break; 10076 case SVPD_SCSI_PORTS: 10077 retval = ctl_inquiry_evpd_scsi_ports(ctsio, alloc_len); 10078 break; 10079 case SVPD_BLOCK_LIMITS: 10080 retval = ctl_inquiry_evpd_block_limits(ctsio, alloc_len); 10081 break; 10082 case SVPD_LBP: 10083 retval = ctl_inquiry_evpd_lbp(ctsio, alloc_len); 10084 break; 10085 default: 10086 ctl_set_invalid_field(ctsio, 10087 /*sks_valid*/ 1, 10088 /*command*/ 1, 10089 /*field*/ 2, 10090 /*bit_valid*/ 0, 10091 /*bit*/ 0); 10092 ctl_done((union ctl_io *)ctsio); 10093 retval = CTL_RETVAL_COMPLETE; 10094 break; 10095 } 10096 10097 return (retval); 10098} 10099 10100static int 10101ctl_inquiry_std(struct ctl_scsiio *ctsio) 10102{ 10103 struct scsi_inquiry_data *inq_ptr; 10104 struct scsi_inquiry *cdb; 10105 struct ctl_softc *ctl_softc; 10106 struct ctl_lun *lun; 10107 char *val; 10108 uint32_t alloc_len; 10109 int is_fc; 10110 10111 ctl_softc = control_softc; 10112 10113 /* 10114 * Figure out whether we're talking to a Fibre Channel port or not. 10115 * We treat the ioctl front end, and any SCSI adapters, as packetized 10116 * SCSI front ends. 10117 */ 10118 if (ctl_softc->ctl_ports[ctl_port_idx(ctsio->io_hdr.nexus.targ_port)]->port_type != 10119 CTL_PORT_FC) 10120 is_fc = 0; 10121 else 10122 is_fc = 1; 10123 10124 lun = ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 10125 cdb = (struct scsi_inquiry *)ctsio->cdb; 10126 alloc_len = scsi_2btoul(cdb->length); 10127 10128 /* 10129 * We malloc the full inquiry data size here and fill it 10130 * in. If the user only asks for less, we'll give him 10131 * that much. 10132 */ 10133 ctsio->kern_data_ptr = malloc(sizeof(*inq_ptr), M_CTL, M_WAITOK | M_ZERO); 10134 inq_ptr = (struct scsi_inquiry_data *)ctsio->kern_data_ptr; 10135 ctsio->kern_sg_entries = 0; 10136 ctsio->kern_data_resid = 0; 10137 ctsio->kern_rel_offset = 0; 10138 10139 if (sizeof(*inq_ptr) < alloc_len) { 10140 ctsio->residual = alloc_len - sizeof(*inq_ptr); 10141 ctsio->kern_data_len = sizeof(*inq_ptr); 10142 ctsio->kern_total_len = sizeof(*inq_ptr); 10143 } else { 10144 ctsio->residual = 0; 10145 ctsio->kern_data_len = alloc_len; 10146 ctsio->kern_total_len = alloc_len; 10147 } 10148 10149 /* 10150 * If we have a LUN configured, report it as connected. Otherwise, 10151 * report that it is offline or no device is supported, depending 10152 * on the value of inquiry_pq_no_lun. 10153 * 10154 * According to the spec (SPC-4 r34), the peripheral qualifier 10155 * SID_QUAL_LU_OFFLINE (001b) is used in the following scenario: 10156 * 10157 * "A peripheral device having the specified peripheral device type 10158 * is not connected to this logical unit. However, the device 10159 * server is capable of supporting the specified peripheral device 10160 * type on this logical unit." 10161 * 10162 * According to the same spec, the peripheral qualifier 10163 * SID_QUAL_BAD_LU (011b) is used in this scenario: 10164 * 10165 * "The device server is not capable of supporting a peripheral 10166 * device on this logical unit. For this peripheral qualifier the 10167 * peripheral device type shall be set to 1Fh. All other peripheral 10168 * device type values are reserved for this peripheral qualifier." 10169 * 10170 * Given the text, it would seem that we probably want to report that 10171 * the LUN is offline here. There is no LUN connected, but we can 10172 * support a LUN at the given LUN number. 10173 * 10174 * In the real world, though, it sounds like things are a little 10175 * different: 10176 * 10177 * - Linux, when presented with a LUN with the offline peripheral 10178 * qualifier, will create an sg driver instance for it. So when 10179 * you attach it to CTL, you wind up with a ton of sg driver 10180 * instances. (One for every LUN that Linux bothered to probe.) 10181 * Linux does this despite the fact that it issues a REPORT LUNs 10182 * to LUN 0 to get the inventory of supported LUNs. 10183 * 10184 * - There is other anecdotal evidence (from Emulex folks) about 10185 * arrays that use the offline peripheral qualifier for LUNs that 10186 * are on the "passive" path in an active/passive array. 10187 * 10188 * So the solution is provide a hopefully reasonable default 10189 * (return bad/no LUN) and allow the user to change the behavior 10190 * with a tunable/sysctl variable. 10191 */ 10192 if (lun != NULL) 10193 inq_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 10194 lun->be_lun->lun_type; 10195 else if (ctl_softc->inquiry_pq_no_lun == 0) 10196 inq_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 10197 else 10198 inq_ptr->device = (SID_QUAL_BAD_LU << 5) | T_NODEVICE; 10199 10200 /* RMB in byte 2 is 0 */ 10201 inq_ptr->version = SCSI_REV_SPC3; 10202 10203 /* 10204 * According to SAM-3, even if a device only supports a single 10205 * level of LUN addressing, it should still set the HISUP bit: 10206 * 10207 * 4.9.1 Logical unit numbers overview 10208 * 10209 * All logical unit number formats described in this standard are 10210 * hierarchical in structure even when only a single level in that 10211 * hierarchy is used. The HISUP bit shall be set to one in the 10212 * standard INQUIRY data (see SPC-2) when any logical unit number 10213 * format described in this standard is used. Non-hierarchical 10214 * formats are outside the scope of this standard. 10215 * 10216 * Therefore we set the HiSup bit here. 10217 * 10218 * The reponse format is 2, per SPC-3. 10219 */ 10220 inq_ptr->response_format = SID_HiSup | 2; 10221 10222 inq_ptr->additional_length = sizeof(*inq_ptr) - 4; 10223 CTL_DEBUG_PRINT(("additional_length = %d\n", 10224 inq_ptr->additional_length)); 10225 10226 inq_ptr->spc3_flags = SPC3_SID_TPGS_IMPLICIT; 10227 /* 16 bit addressing */ 10228 if (is_fc == 0) 10229 inq_ptr->spc2_flags = SPC2_SID_ADDR16; 10230 /* XXX set the SID_MultiP bit here if we're actually going to 10231 respond on multiple ports */ 10232 inq_ptr->spc2_flags |= SPC2_SID_MultiP; 10233 10234 /* 16 bit data bus, synchronous transfers */ 10235 /* XXX these flags don't apply for FC */ 10236 if (is_fc == 0) 10237 inq_ptr->flags = SID_WBus16 | SID_Sync; 10238 /* 10239 * XXX KDM do we want to support tagged queueing on the control 10240 * device at all? 10241 */ 10242 if ((lun == NULL) 10243 || (lun->be_lun->lun_type != T_PROCESSOR)) 10244 inq_ptr->flags |= SID_CmdQue; 10245 /* 10246 * Per SPC-3, unused bytes in ASCII strings are filled with spaces. 10247 * We have 8 bytes for the vendor name, and 16 bytes for the device 10248 * name and 4 bytes for the revision. 10249 */ 10250 if (lun == NULL || (val = ctl_get_opt(&lun->be_lun->options, 10251 "vendor")) == NULL) { 10252 strcpy(inq_ptr->vendor, CTL_VENDOR); 10253 } else { 10254 memset(inq_ptr->vendor, ' ', sizeof(inq_ptr->vendor)); 10255 strncpy(inq_ptr->vendor, val, 10256 min(sizeof(inq_ptr->vendor), strlen(val))); 10257 } 10258 if (lun == NULL) { 10259 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10260 } else if ((val = ctl_get_opt(&lun->be_lun->options, "product")) == NULL) { 10261 switch (lun->be_lun->lun_type) { 10262 case T_DIRECT: 10263 strcpy(inq_ptr->product, CTL_DIRECT_PRODUCT); 10264 break; 10265 case T_PROCESSOR: 10266 strcpy(inq_ptr->product, CTL_PROCESSOR_PRODUCT); 10267 break; 10268 default: 10269 strcpy(inq_ptr->product, CTL_UNKNOWN_PRODUCT); 10270 break; 10271 } 10272 } else { 10273 memset(inq_ptr->product, ' ', sizeof(inq_ptr->product)); 10274 strncpy(inq_ptr->product, val, 10275 min(sizeof(inq_ptr->product), strlen(val))); 10276 } 10277 10278 /* 10279 * XXX make this a macro somewhere so it automatically gets 10280 * incremented when we make changes. 10281 */ 10282 if (lun == NULL || (val = ctl_get_opt(&lun->be_lun->options, 10283 "revision")) == NULL) { 10284 strncpy(inq_ptr->revision, "0001", sizeof(inq_ptr->revision)); 10285 } else { 10286 memset(inq_ptr->revision, ' ', sizeof(inq_ptr->revision)); 10287 strncpy(inq_ptr->revision, val, 10288 min(sizeof(inq_ptr->revision), strlen(val))); 10289 } 10290 10291 /* 10292 * For parallel SCSI, we support double transition and single 10293 * transition clocking. We also support QAS (Quick Arbitration 10294 * and Selection) and Information Unit transfers on both the 10295 * control and array devices. 10296 */ 10297 if (is_fc == 0) 10298 inq_ptr->spi3data = SID_SPI_CLOCK_DT_ST | SID_SPI_QAS | 10299 SID_SPI_IUS; 10300 10301 /* SAM-3 */ 10302 scsi_ulto2b(0x0060, inq_ptr->version1); 10303 /* SPC-3 (no version claimed) XXX should we claim a version? */ 10304 scsi_ulto2b(0x0300, inq_ptr->version2); 10305 if (is_fc) { 10306 /* FCP-2 ANSI INCITS.350:2003 */ 10307 scsi_ulto2b(0x0917, inq_ptr->version3); 10308 } else { 10309 /* SPI-4 ANSI INCITS.362:200x */ 10310 scsi_ulto2b(0x0B56, inq_ptr->version3); 10311 } 10312 10313 if (lun == NULL) { 10314 /* SBC-2 (no version claimed) XXX should we claim a version? */ 10315 scsi_ulto2b(0x0320, inq_ptr->version4); 10316 } else { 10317 switch (lun->be_lun->lun_type) { 10318 case T_DIRECT: 10319 /* 10320 * SBC-2 (no version claimed) XXX should we claim a 10321 * version? 10322 */ 10323 scsi_ulto2b(0x0320, inq_ptr->version4); 10324 break; 10325 case T_PROCESSOR: 10326 default: 10327 break; 10328 } 10329 } 10330 10331 ctsio->scsi_status = SCSI_STATUS_OK; 10332 if (ctsio->kern_data_len > 0) { 10333 ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 10334 ctsio->be_move_done = ctl_config_move_done; 10335 ctl_datamove((union ctl_io *)ctsio); 10336 } else { 10337 ctsio->io_hdr.status = CTL_SUCCESS; 10338 ctl_done((union ctl_io *)ctsio); 10339 } 10340 10341 return (CTL_RETVAL_COMPLETE); 10342} 10343 10344int 10345ctl_inquiry(struct ctl_scsiio *ctsio) 10346{ 10347 struct scsi_inquiry *cdb; 10348 int retval; 10349 10350 cdb = (struct scsi_inquiry *)ctsio->cdb; 10351 10352 retval = 0; 10353 10354 CTL_DEBUG_PRINT(("ctl_inquiry\n")); 10355 10356 /* 10357 * Right now, we don't support the CmdDt inquiry information. 10358 * This would be nice to support in the future. When we do 10359 * support it, we should change this test so that it checks to make 10360 * sure SI_EVPD and SI_CMDDT aren't both set at the same time. 10361 */ 10362#ifdef notyet 10363 if (((cdb->byte2 & SI_EVPD) 10364 && (cdb->byte2 & SI_CMDDT))) 10365#endif 10366 if (cdb->byte2 & SI_CMDDT) { 10367 /* 10368 * Point to the SI_CMDDT bit. We might change this 10369 * when we support SI_CMDDT, but since both bits would be 10370 * "wrong", this should probably just stay as-is then. 10371 */ 10372 ctl_set_invalid_field(ctsio, 10373 /*sks_valid*/ 1, 10374 /*command*/ 1, 10375 /*field*/ 1, 10376 /*bit_valid*/ 1, 10377 /*bit*/ 1); 10378 ctl_done((union ctl_io *)ctsio); 10379 return (CTL_RETVAL_COMPLETE); 10380 } 10381 if (cdb->byte2 & SI_EVPD) 10382 retval = ctl_inquiry_evpd(ctsio); 10383#ifdef notyet 10384 else if (cdb->byte2 & SI_CMDDT) 10385 retval = ctl_inquiry_cmddt(ctsio); 10386#endif 10387 else 10388 retval = ctl_inquiry_std(ctsio); 10389 10390 return (retval); 10391} 10392 10393/* 10394 * For known CDB types, parse the LBA and length. 10395 */ 10396static int 10397ctl_get_lba_len(union ctl_io *io, uint64_t *lba, uint32_t *len) 10398{ 10399 if (io->io_hdr.io_type != CTL_IO_SCSI) 10400 return (1); 10401 10402 switch (io->scsiio.cdb[0]) { 10403 case COMPARE_AND_WRITE: { 10404 struct scsi_compare_and_write *cdb; 10405 10406 cdb = (struct scsi_compare_and_write *)io->scsiio.cdb; 10407 10408 *lba = scsi_8btou64(cdb->addr); 10409 *len = cdb->length; 10410 break; 10411 } 10412 case READ_6: 10413 case WRITE_6: { 10414 struct scsi_rw_6 *cdb; 10415 10416 cdb = (struct scsi_rw_6 *)io->scsiio.cdb; 10417 10418 *lba = scsi_3btoul(cdb->addr); 10419 /* only 5 bits are valid in the most significant address byte */ 10420 *lba &= 0x1fffff; 10421 *len = cdb->length; 10422 break; 10423 } 10424 case READ_10: 10425 case WRITE_10: { 10426 struct scsi_rw_10 *cdb; 10427 10428 cdb = (struct scsi_rw_10 *)io->scsiio.cdb; 10429 10430 *lba = scsi_4btoul(cdb->addr); 10431 *len = scsi_2btoul(cdb->length); 10432 break; 10433 } 10434 case WRITE_VERIFY_10: { 10435 struct scsi_write_verify_10 *cdb; 10436 10437 cdb = (struct scsi_write_verify_10 *)io->scsiio.cdb; 10438 10439 *lba = scsi_4btoul(cdb->addr); 10440 *len = scsi_2btoul(cdb->length); 10441 break; 10442 } 10443 case READ_12: 10444 case WRITE_12: { 10445 struct scsi_rw_12 *cdb; 10446 10447 cdb = (struct scsi_rw_12 *)io->scsiio.cdb; 10448 10449 *lba = scsi_4btoul(cdb->addr); 10450 *len = scsi_4btoul(cdb->length); 10451 break; 10452 } 10453 case WRITE_VERIFY_12: { 10454 struct scsi_write_verify_12 *cdb; 10455 10456 cdb = (struct scsi_write_verify_12 *)io->scsiio.cdb; 10457 10458 *lba = scsi_4btoul(cdb->addr); 10459 *len = scsi_4btoul(cdb->length); 10460 break; 10461 } 10462 case READ_16: 10463 case WRITE_16: { 10464 struct scsi_rw_16 *cdb; 10465 10466 cdb = (struct scsi_rw_16 *)io->scsiio.cdb; 10467 10468 *lba = scsi_8btou64(cdb->addr); 10469 *len = scsi_4btoul(cdb->length); 10470 break; 10471 } 10472 case WRITE_VERIFY_16: { 10473 struct scsi_write_verify_16 *cdb; 10474 10475 cdb = (struct scsi_write_verify_16 *)io->scsiio.cdb; 10476 10477 10478 *lba = scsi_8btou64(cdb->addr); 10479 *len = scsi_4btoul(cdb->length); 10480 break; 10481 } 10482 case WRITE_SAME_10: { 10483 struct scsi_write_same_10 *cdb; 10484 10485 cdb = (struct scsi_write_same_10 *)io->scsiio.cdb; 10486 10487 *lba = scsi_4btoul(cdb->addr); 10488 *len = scsi_2btoul(cdb->length); 10489 break; 10490 } 10491 case WRITE_SAME_16: { 10492 struct scsi_write_same_16 *cdb; 10493 10494 cdb = (struct scsi_write_same_16 *)io->scsiio.cdb; 10495 10496 *lba = scsi_8btou64(cdb->addr); 10497 *len = scsi_4btoul(cdb->length); 10498 break; 10499 } 10500 case VERIFY_10: { 10501 struct scsi_verify_10 *cdb; 10502 10503 cdb = (struct scsi_verify_10 *)io->scsiio.cdb; 10504 10505 *lba = scsi_4btoul(cdb->addr); 10506 *len = scsi_2btoul(cdb->length); 10507 break; 10508 } 10509 case VERIFY_12: { 10510 struct scsi_verify_12 *cdb; 10511 10512 cdb = (struct scsi_verify_12 *)io->scsiio.cdb; 10513 10514 *lba = scsi_4btoul(cdb->addr); 10515 *len = scsi_4btoul(cdb->length); 10516 break; 10517 } 10518 case VERIFY_16: { 10519 struct scsi_verify_16 *cdb; 10520 10521 cdb = (struct scsi_verify_16 *)io->scsiio.cdb; 10522 10523 *lba = scsi_8btou64(cdb->addr); 10524 *len = scsi_4btoul(cdb->length); 10525 break; 10526 } 10527 default: 10528 return (1); 10529 break; /* NOTREACHED */ 10530 } 10531 10532 return (0); 10533} 10534 10535static ctl_action 10536ctl_extent_check_lba(uint64_t lba1, uint32_t len1, uint64_t lba2, uint32_t len2) 10537{ 10538 uint64_t endlba1, endlba2; 10539 10540 endlba1 = lba1 + len1 - 1; 10541 endlba2 = lba2 + len2 - 1; 10542 10543 if ((endlba1 < lba2) 10544 || (endlba2 < lba1)) 10545 return (CTL_ACTION_PASS); 10546 else 10547 return (CTL_ACTION_BLOCK); 10548} 10549 10550static ctl_action 10551ctl_extent_check(union ctl_io *io1, union ctl_io *io2) 10552{ 10553 uint64_t lba1, lba2; 10554 uint32_t len1, len2; 10555 int retval; 10556 10557 retval = ctl_get_lba_len(io1, &lba1, &len1); 10558 if (retval != 0) 10559 return (CTL_ACTION_ERROR); 10560 10561 retval = ctl_get_lba_len(io2, &lba2, &len2); 10562 if (retval != 0) 10563 return (CTL_ACTION_ERROR); 10564 10565 return (ctl_extent_check_lba(lba1, len1, lba2, len2)); 10566} 10567 10568static ctl_action 10569ctl_check_for_blockage(union ctl_io *pending_io, union ctl_io *ooa_io) 10570{ 10571 const struct ctl_cmd_entry *pending_entry, *ooa_entry; 10572 ctl_serialize_action *serialize_row; 10573 10574 /* 10575 * The initiator attempted multiple untagged commands at the same 10576 * time. Can't do that. 10577 */ 10578 if ((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10579 && (ooa_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10580 && ((pending_io->io_hdr.nexus.targ_port == 10581 ooa_io->io_hdr.nexus.targ_port) 10582 && (pending_io->io_hdr.nexus.initid.id == 10583 ooa_io->io_hdr.nexus.initid.id)) 10584 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10585 return (CTL_ACTION_OVERLAP); 10586 10587 /* 10588 * The initiator attempted to send multiple tagged commands with 10589 * the same ID. (It's fine if different initiators have the same 10590 * tag ID.) 10591 * 10592 * Even if all of those conditions are true, we don't kill the I/O 10593 * if the command ahead of us has been aborted. We won't end up 10594 * sending it to the FETD, and it's perfectly legal to resend a 10595 * command with the same tag number as long as the previous 10596 * instance of this tag number has been aborted somehow. 10597 */ 10598 if ((pending_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10599 && (ooa_io->scsiio.tag_type != CTL_TAG_UNTAGGED) 10600 && (pending_io->scsiio.tag_num == ooa_io->scsiio.tag_num) 10601 && ((pending_io->io_hdr.nexus.targ_port == 10602 ooa_io->io_hdr.nexus.targ_port) 10603 && (pending_io->io_hdr.nexus.initid.id == 10604 ooa_io->io_hdr.nexus.initid.id)) 10605 && ((ooa_io->io_hdr.flags & CTL_FLAG_ABORT) == 0)) 10606 return (CTL_ACTION_OVERLAP_TAG); 10607 10608 /* 10609 * If we get a head of queue tag, SAM-3 says that we should 10610 * immediately execute it. 10611 * 10612 * What happens if this command would normally block for some other 10613 * reason? e.g. a request sense with a head of queue tag 10614 * immediately after a write. Normally that would block, but this 10615 * will result in its getting executed immediately... 10616 * 10617 * We currently return "pass" instead of "skip", so we'll end up 10618 * going through the rest of the queue to check for overlapped tags. 10619 * 10620 * XXX KDM check for other types of blockage first?? 10621 */ 10622 if (pending_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10623 return (CTL_ACTION_PASS); 10624 10625 /* 10626 * Ordered tags have to block until all items ahead of them 10627 * have completed. If we get called with an ordered tag, we always 10628 * block, if something else is ahead of us in the queue. 10629 */ 10630 if (pending_io->scsiio.tag_type == CTL_TAG_ORDERED) 10631 return (CTL_ACTION_BLOCK); 10632 10633 /* 10634 * Simple tags get blocked until all head of queue and ordered tags 10635 * ahead of them have completed. I'm lumping untagged commands in 10636 * with simple tags here. XXX KDM is that the right thing to do? 10637 */ 10638 if (((pending_io->scsiio.tag_type == CTL_TAG_UNTAGGED) 10639 || (pending_io->scsiio.tag_type == CTL_TAG_SIMPLE)) 10640 && ((ooa_io->scsiio.tag_type == CTL_TAG_HEAD_OF_QUEUE) 10641 || (ooa_io->scsiio.tag_type == CTL_TAG_ORDERED))) 10642 return (CTL_ACTION_BLOCK); 10643 10644 pending_entry = ctl_get_cmd_entry(&pending_io->scsiio); 10645 ooa_entry = ctl_get_cmd_entry(&ooa_io->scsiio); 10646 10647 serialize_row = ctl_serialize_table[ooa_entry->seridx]; 10648 10649 switch (serialize_row[pending_entry->seridx]) { 10650 case CTL_SER_BLOCK: 10651 return (CTL_ACTION_BLOCK); 10652 break; /* NOTREACHED */ 10653 case CTL_SER_EXTENT: 10654 return (ctl_extent_check(pending_io, ooa_io)); 10655 break; /* NOTREACHED */ 10656 case CTL_SER_PASS: 10657 return (CTL_ACTION_PASS); 10658 break; /* NOTREACHED */ 10659 case CTL_SER_SKIP: 10660 return (CTL_ACTION_SKIP); 10661 break; 10662 default: 10663 panic("invalid serialization value %d", 10664 serialize_row[pending_entry->seridx]); 10665 break; /* NOTREACHED */ 10666 } 10667 10668 return (CTL_ACTION_ERROR); 10669} 10670 10671/* 10672 * Check for blockage or overlaps against the OOA (Order Of Arrival) queue. 10673 * Assumptions: 10674 * - pending_io is generally either incoming, or on the blocked queue 10675 * - starting I/O is the I/O we want to start the check with. 10676 */ 10677static ctl_action 10678ctl_check_ooa(struct ctl_lun *lun, union ctl_io *pending_io, 10679 union ctl_io *starting_io) 10680{ 10681 union ctl_io *ooa_io; 10682 ctl_action action; 10683 10684 mtx_assert(&lun->lun_lock, MA_OWNED); 10685 10686 /* 10687 * Run back along the OOA queue, starting with the current 10688 * blocked I/O and going through every I/O before it on the 10689 * queue. If starting_io is NULL, we'll just end up returning 10690 * CTL_ACTION_PASS. 10691 */ 10692 for (ooa_io = starting_io; ooa_io != NULL; 10693 ooa_io = (union ctl_io *)TAILQ_PREV(&ooa_io->io_hdr, ctl_ooaq, 10694 ooa_links)){ 10695 10696 /* 10697 * This routine just checks to see whether 10698 * cur_blocked is blocked by ooa_io, which is ahead 10699 * of it in the queue. It doesn't queue/dequeue 10700 * cur_blocked. 10701 */ 10702 action = ctl_check_for_blockage(pending_io, ooa_io); 10703 switch (action) { 10704 case CTL_ACTION_BLOCK: 10705 case CTL_ACTION_OVERLAP: 10706 case CTL_ACTION_OVERLAP_TAG: 10707 case CTL_ACTION_SKIP: 10708 case CTL_ACTION_ERROR: 10709 return (action); 10710 break; /* NOTREACHED */ 10711 case CTL_ACTION_PASS: 10712 break; 10713 default: 10714 panic("invalid action %d", action); 10715 break; /* NOTREACHED */ 10716 } 10717 } 10718 10719 return (CTL_ACTION_PASS); 10720} 10721 10722/* 10723 * Assumptions: 10724 * - An I/O has just completed, and has been removed from the per-LUN OOA 10725 * queue, so some items on the blocked queue may now be unblocked. 10726 */ 10727static int 10728ctl_check_blocked(struct ctl_lun *lun) 10729{ 10730 union ctl_io *cur_blocked, *next_blocked; 10731 10732 mtx_assert(&lun->lun_lock, MA_OWNED); 10733 10734 /* 10735 * Run forward from the head of the blocked queue, checking each 10736 * entry against the I/Os prior to it on the OOA queue to see if 10737 * there is still any blockage. 10738 * 10739 * We cannot use the TAILQ_FOREACH() macro, because it can't deal 10740 * with our removing a variable on it while it is traversing the 10741 * list. 10742 */ 10743 for (cur_blocked = (union ctl_io *)TAILQ_FIRST(&lun->blocked_queue); 10744 cur_blocked != NULL; cur_blocked = next_blocked) { 10745 union ctl_io *prev_ooa; 10746 ctl_action action; 10747 10748 next_blocked = (union ctl_io *)TAILQ_NEXT(&cur_blocked->io_hdr, 10749 blocked_links); 10750 10751 prev_ooa = (union ctl_io *)TAILQ_PREV(&cur_blocked->io_hdr, 10752 ctl_ooaq, ooa_links); 10753 10754 /* 10755 * If cur_blocked happens to be the first item in the OOA 10756 * queue now, prev_ooa will be NULL, and the action 10757 * returned will just be CTL_ACTION_PASS. 10758 */ 10759 action = ctl_check_ooa(lun, cur_blocked, prev_ooa); 10760 10761 switch (action) { 10762 case CTL_ACTION_BLOCK: 10763 /* Nothing to do here, still blocked */ 10764 break; 10765 case CTL_ACTION_OVERLAP: 10766 case CTL_ACTION_OVERLAP_TAG: 10767 /* 10768 * This shouldn't happen! In theory we've already 10769 * checked this command for overlap... 10770 */ 10771 break; 10772 case CTL_ACTION_PASS: 10773 case CTL_ACTION_SKIP: { 10774 struct ctl_softc *softc; 10775 const struct ctl_cmd_entry *entry; 10776 uint32_t initidx; 10777 int isc_retval; 10778 10779 /* 10780 * The skip case shouldn't happen, this transaction 10781 * should have never made it onto the blocked queue. 10782 */ 10783 /* 10784 * This I/O is no longer blocked, we can remove it 10785 * from the blocked queue. Since this is a TAILQ 10786 * (doubly linked list), we can do O(1) removals 10787 * from any place on the list. 10788 */ 10789 TAILQ_REMOVE(&lun->blocked_queue, &cur_blocked->io_hdr, 10790 blocked_links); 10791 cur_blocked->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 10792 10793 if (cur_blocked->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC){ 10794 /* 10795 * Need to send IO back to original side to 10796 * run 10797 */ 10798 union ctl_ha_msg msg_info; 10799 10800 msg_info.hdr.original_sc = 10801 cur_blocked->io_hdr.original_sc; 10802 msg_info.hdr.serializing_sc = cur_blocked; 10803 msg_info.hdr.msg_type = CTL_MSG_R2R; 10804 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 10805 &msg_info, sizeof(msg_info), 0)) > 10806 CTL_HA_STATUS_SUCCESS) { 10807 printf("CTL:Check Blocked error from " 10808 "ctl_ha_msg_send %d\n", 10809 isc_retval); 10810 } 10811 break; 10812 } 10813 entry = ctl_get_cmd_entry(&cur_blocked->scsiio); 10814 softc = control_softc; 10815 10816 initidx = ctl_get_initindex(&cur_blocked->io_hdr.nexus); 10817 10818 /* 10819 * Check this I/O for LUN state changes that may 10820 * have happened while this command was blocked. 10821 * The LUN state may have been changed by a command 10822 * ahead of us in the queue, so we need to re-check 10823 * for any states that can be caused by SCSI 10824 * commands. 10825 */ 10826 if (ctl_scsiio_lun_check(softc, lun, entry, 10827 &cur_blocked->scsiio) == 0) { 10828 cur_blocked->io_hdr.flags |= 10829 CTL_FLAG_IS_WAS_ON_RTR; 10830 ctl_enqueue_rtr(cur_blocked); 10831 } else 10832 ctl_done(cur_blocked); 10833 break; 10834 } 10835 default: 10836 /* 10837 * This probably shouldn't happen -- we shouldn't 10838 * get CTL_ACTION_ERROR, or anything else. 10839 */ 10840 break; 10841 } 10842 } 10843 10844 return (CTL_RETVAL_COMPLETE); 10845} 10846 10847/* 10848 * This routine (with one exception) checks LUN flags that can be set by 10849 * commands ahead of us in the OOA queue. These flags have to be checked 10850 * when a command initially comes in, and when we pull a command off the 10851 * blocked queue and are preparing to execute it. The reason we have to 10852 * check these flags for commands on the blocked queue is that the LUN 10853 * state may have been changed by a command ahead of us while we're on the 10854 * blocked queue. 10855 * 10856 * Ordering is somewhat important with these checks, so please pay 10857 * careful attention to the placement of any new checks. 10858 */ 10859static int 10860ctl_scsiio_lun_check(struct ctl_softc *ctl_softc, struct ctl_lun *lun, 10861 const struct ctl_cmd_entry *entry, struct ctl_scsiio *ctsio) 10862{ 10863 int retval; 10864 10865 retval = 0; 10866 10867 mtx_assert(&lun->lun_lock, MA_OWNED); 10868 10869 /* 10870 * If this shelf is a secondary shelf controller, we have to reject 10871 * any media access commands. 10872 */ 10873#if 0 10874 /* No longer needed for HA */ 10875 if (((ctl_softc->flags & CTL_FLAG_MASTER_SHELF) == 0) 10876 && ((entry->flags & CTL_CMD_FLAG_OK_ON_SECONDARY) == 0)) { 10877 ctl_set_lun_standby(ctsio); 10878 retval = 1; 10879 goto bailout; 10880 } 10881#endif 10882 10883 /* 10884 * Check for a reservation conflict. If this command isn't allowed 10885 * even on reserved LUNs, and if this initiator isn't the one who 10886 * reserved us, reject the command with a reservation conflict. 10887 */ 10888 if ((lun->flags & CTL_LUN_RESERVED) 10889 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_RESV) == 0)) { 10890 if ((ctsio->io_hdr.nexus.initid.id != lun->rsv_nexus.initid.id) 10891 || (ctsio->io_hdr.nexus.targ_port != lun->rsv_nexus.targ_port) 10892 || (ctsio->io_hdr.nexus.targ_target.id != 10893 lun->rsv_nexus.targ_target.id)) { 10894 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10895 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10896 retval = 1; 10897 goto bailout; 10898 } 10899 } 10900 10901 if ( (lun->flags & CTL_LUN_PR_RESERVED) 10902 && ((entry->flags & CTL_CMD_FLAG_ALLOW_ON_PR_RESV) == 0)) { 10903 uint32_t residx; 10904 10905 residx = ctl_get_resindex(&ctsio->io_hdr.nexus); 10906 /* 10907 * if we aren't registered or it's a res holder type 10908 * reservation and this isn't the res holder then set a 10909 * conflict. 10910 * NOTE: Commands which might be allowed on write exclusive 10911 * type reservations are checked in the particular command 10912 * for a conflict. Read and SSU are the only ones. 10913 */ 10914 if (!lun->per_res[residx].registered 10915 || (residx != lun->pr_res_idx && lun->res_type < 4)) { 10916 ctsio->scsi_status = SCSI_STATUS_RESERV_CONFLICT; 10917 ctsio->io_hdr.status = CTL_SCSI_ERROR; 10918 retval = 1; 10919 goto bailout; 10920 } 10921 10922 } 10923 10924 if ((lun->flags & CTL_LUN_OFFLINE) 10925 && ((entry->flags & CTL_CMD_FLAG_OK_ON_OFFLINE) == 0)) { 10926 ctl_set_lun_not_ready(ctsio); 10927 retval = 1; 10928 goto bailout; 10929 } 10930 10931 /* 10932 * If the LUN is stopped, see if this particular command is allowed 10933 * for a stopped lun. Otherwise, reject it with 0x04,0x02. 10934 */ 10935 if ((lun->flags & CTL_LUN_STOPPED) 10936 && ((entry->flags & CTL_CMD_FLAG_OK_ON_STOPPED) == 0)) { 10937 /* "Logical unit not ready, initializing cmd. required" */ 10938 ctl_set_lun_stopped(ctsio); 10939 retval = 1; 10940 goto bailout; 10941 } 10942 10943 if ((lun->flags & CTL_LUN_INOPERABLE) 10944 && ((entry->flags & CTL_CMD_FLAG_OK_ON_INOPERABLE) == 0)) { 10945 /* "Medium format corrupted" */ 10946 ctl_set_medium_format_corrupted(ctsio); 10947 retval = 1; 10948 goto bailout; 10949 } 10950 10951bailout: 10952 return (retval); 10953 10954} 10955 10956static void 10957ctl_failover_io(union ctl_io *io, int have_lock) 10958{ 10959 ctl_set_busy(&io->scsiio); 10960 ctl_done(io); 10961} 10962 10963static void 10964ctl_failover(void) 10965{ 10966 struct ctl_lun *lun; 10967 struct ctl_softc *ctl_softc; 10968 union ctl_io *next_io, *pending_io; 10969 union ctl_io *io; 10970 int lun_idx; 10971 int i; 10972 10973 ctl_softc = control_softc; 10974 10975 mtx_lock(&ctl_softc->ctl_lock); 10976 /* 10977 * Remove any cmds from the other SC from the rtr queue. These 10978 * will obviously only be for LUNs for which we're the primary. 10979 * We can't send status or get/send data for these commands. 10980 * Since they haven't been executed yet, we can just remove them. 10981 * We'll either abort them or delete them below, depending on 10982 * which HA mode we're in. 10983 */ 10984#ifdef notyet 10985 mtx_lock(&ctl_softc->queue_lock); 10986 for (io = (union ctl_io *)STAILQ_FIRST(&ctl_softc->rtr_queue); 10987 io != NULL; io = next_io) { 10988 next_io = (union ctl_io *)STAILQ_NEXT(&io->io_hdr, links); 10989 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 10990 STAILQ_REMOVE(&ctl_softc->rtr_queue, &io->io_hdr, 10991 ctl_io_hdr, links); 10992 } 10993 mtx_unlock(&ctl_softc->queue_lock); 10994#endif 10995 10996 for (lun_idx=0; lun_idx < ctl_softc->num_luns; lun_idx++) { 10997 lun = ctl_softc->ctl_luns[lun_idx]; 10998 if (lun==NULL) 10999 continue; 11000 11001 /* 11002 * Processor LUNs are primary on both sides. 11003 * XXX will this always be true? 11004 */ 11005 if (lun->be_lun->lun_type == T_PROCESSOR) 11006 continue; 11007 11008 if ((lun->flags & CTL_LUN_PRIMARY_SC) 11009 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 11010 printf("FAILOVER: primary lun %d\n", lun_idx); 11011 /* 11012 * Remove all commands from the other SC. First from the 11013 * blocked queue then from the ooa queue. Once we have 11014 * removed them. Call ctl_check_blocked to see if there 11015 * is anything that can run. 11016 */ 11017 for (io = (union ctl_io *)TAILQ_FIRST( 11018 &lun->blocked_queue); io != NULL; io = next_io) { 11019 11020 next_io = (union ctl_io *)TAILQ_NEXT( 11021 &io->io_hdr, blocked_links); 11022 11023 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 11024 TAILQ_REMOVE(&lun->blocked_queue, 11025 &io->io_hdr,blocked_links); 11026 io->io_hdr.flags &= ~CTL_FLAG_BLOCKED; 11027 TAILQ_REMOVE(&lun->ooa_queue, 11028 &io->io_hdr, ooa_links); 11029 11030 ctl_free_io(io); 11031 } 11032 } 11033 11034 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 11035 io != NULL; io = next_io) { 11036 11037 next_io = (union ctl_io *)TAILQ_NEXT( 11038 &io->io_hdr, ooa_links); 11039 11040 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) { 11041 11042 TAILQ_REMOVE(&lun->ooa_queue, 11043 &io->io_hdr, 11044 ooa_links); 11045 11046 ctl_free_io(io); 11047 } 11048 } 11049 ctl_check_blocked(lun); 11050 } else if ((lun->flags & CTL_LUN_PRIMARY_SC) 11051 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 11052 11053 printf("FAILOVER: primary lun %d\n", lun_idx); 11054 /* 11055 * Abort all commands from the other SC. We can't 11056 * send status back for them now. These should get 11057 * cleaned up when they are completed or come out 11058 * for a datamove operation. 11059 */ 11060 for (io = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); 11061 io != NULL; io = next_io) { 11062 next_io = (union ctl_io *)TAILQ_NEXT( 11063 &io->io_hdr, ooa_links); 11064 11065 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 11066 io->io_hdr.flags |= CTL_FLAG_ABORT; 11067 } 11068 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 11069 && (ctl_softc->ha_mode == CTL_HA_MODE_XFER)) { 11070 11071 printf("FAILOVER: secondary lun %d\n", lun_idx); 11072 11073 lun->flags |= CTL_LUN_PRIMARY_SC; 11074 11075 /* 11076 * We send all I/O that was sent to this controller 11077 * and redirected to the other side back with 11078 * busy status, and have the initiator retry it. 11079 * Figuring out how much data has been transferred, 11080 * etc. and picking up where we left off would be 11081 * very tricky. 11082 * 11083 * XXX KDM need to remove I/O from the blocked 11084 * queue as well! 11085 */ 11086 for (pending_io = (union ctl_io *)TAILQ_FIRST( 11087 &lun->ooa_queue); pending_io != NULL; 11088 pending_io = next_io) { 11089 11090 next_io = (union ctl_io *)TAILQ_NEXT( 11091 &pending_io->io_hdr, ooa_links); 11092 11093 pending_io->io_hdr.flags &= 11094 ~CTL_FLAG_SENT_2OTHER_SC; 11095 11096 if (pending_io->io_hdr.flags & 11097 CTL_FLAG_IO_ACTIVE) { 11098 pending_io->io_hdr.flags |= 11099 CTL_FLAG_FAILOVER; 11100 } else { 11101 ctl_set_busy(&pending_io->scsiio); 11102 ctl_done(pending_io); 11103 } 11104 } 11105 11106 /* 11107 * Build Unit Attention 11108 */ 11109 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11110 lun->pending_sense[i].ua_pending |= 11111 CTL_UA_ASYM_ACC_CHANGE; 11112 } 11113 } else if (((lun->flags & CTL_LUN_PRIMARY_SC) == 0) 11114 && (ctl_softc->ha_mode == CTL_HA_MODE_SER_ONLY)) { 11115 printf("FAILOVER: secondary lun %d\n", lun_idx); 11116 /* 11117 * if the first io on the OOA is not on the RtR queue 11118 * add it. 11119 */ 11120 lun->flags |= CTL_LUN_PRIMARY_SC; 11121 11122 pending_io = (union ctl_io *)TAILQ_FIRST( 11123 &lun->ooa_queue); 11124 if (pending_io==NULL) { 11125 printf("Nothing on OOA queue\n"); 11126 continue; 11127 } 11128 11129 pending_io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC; 11130 if ((pending_io->io_hdr.flags & 11131 CTL_FLAG_IS_WAS_ON_RTR) == 0) { 11132 pending_io->io_hdr.flags |= 11133 CTL_FLAG_IS_WAS_ON_RTR; 11134 ctl_enqueue_rtr(pending_io); 11135 } 11136#if 0 11137 else 11138 { 11139 printf("Tag 0x%04x is running\n", 11140 pending_io->scsiio.tag_num); 11141 } 11142#endif 11143 11144 next_io = (union ctl_io *)TAILQ_NEXT( 11145 &pending_io->io_hdr, ooa_links); 11146 for (pending_io=next_io; pending_io != NULL; 11147 pending_io = next_io) { 11148 pending_io->io_hdr.flags &= 11149 ~CTL_FLAG_SENT_2OTHER_SC; 11150 next_io = (union ctl_io *)TAILQ_NEXT( 11151 &pending_io->io_hdr, ooa_links); 11152 if (pending_io->io_hdr.flags & 11153 CTL_FLAG_IS_WAS_ON_RTR) { 11154#if 0 11155 printf("Tag 0x%04x is running\n", 11156 pending_io->scsiio.tag_num); 11157#endif 11158 continue; 11159 } 11160 11161 switch (ctl_check_ooa(lun, pending_io, 11162 (union ctl_io *)TAILQ_PREV( 11163 &pending_io->io_hdr, ctl_ooaq, 11164 ooa_links))) { 11165 11166 case CTL_ACTION_BLOCK: 11167 TAILQ_INSERT_TAIL(&lun->blocked_queue, 11168 &pending_io->io_hdr, 11169 blocked_links); 11170 pending_io->io_hdr.flags |= 11171 CTL_FLAG_BLOCKED; 11172 break; 11173 case CTL_ACTION_PASS: 11174 case CTL_ACTION_SKIP: 11175 pending_io->io_hdr.flags |= 11176 CTL_FLAG_IS_WAS_ON_RTR; 11177 ctl_enqueue_rtr(pending_io); 11178 break; 11179 case CTL_ACTION_OVERLAP: 11180 ctl_set_overlapped_cmd( 11181 (struct ctl_scsiio *)pending_io); 11182 ctl_done(pending_io); 11183 break; 11184 case CTL_ACTION_OVERLAP_TAG: 11185 ctl_set_overlapped_tag( 11186 (struct ctl_scsiio *)pending_io, 11187 pending_io->scsiio.tag_num & 0xff); 11188 ctl_done(pending_io); 11189 break; 11190 case CTL_ACTION_ERROR: 11191 default: 11192 ctl_set_internal_failure( 11193 (struct ctl_scsiio *)pending_io, 11194 0, // sks_valid 11195 0); //retry count 11196 ctl_done(pending_io); 11197 break; 11198 } 11199 } 11200 11201 /* 11202 * Build Unit Attention 11203 */ 11204 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11205 lun->pending_sense[i].ua_pending |= 11206 CTL_UA_ASYM_ACC_CHANGE; 11207 } 11208 } else { 11209 panic("Unhandled HA mode failover, LUN flags = %#x, " 11210 "ha_mode = #%x", lun->flags, ctl_softc->ha_mode); 11211 } 11212 } 11213 ctl_pause_rtr = 0; 11214 mtx_unlock(&ctl_softc->ctl_lock); 11215} 11216 11217static int 11218ctl_scsiio_precheck(struct ctl_softc *ctl_softc, struct ctl_scsiio *ctsio) 11219{ 11220 struct ctl_lun *lun; 11221 const struct ctl_cmd_entry *entry; 11222 uint32_t initidx, targ_lun; 11223 int retval; 11224 11225 retval = 0; 11226 11227 lun = NULL; 11228 11229 targ_lun = ctsio->io_hdr.nexus.targ_mapped_lun; 11230 if ((targ_lun < CTL_MAX_LUNS) 11231 && (ctl_softc->ctl_luns[targ_lun] != NULL)) { 11232 lun = ctl_softc->ctl_luns[targ_lun]; 11233 /* 11234 * If the LUN is invalid, pretend that it doesn't exist. 11235 * It will go away as soon as all pending I/O has been 11236 * completed. 11237 */ 11238 if (lun->flags & CTL_LUN_DISABLED) { 11239 lun = NULL; 11240 } else { 11241 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = lun; 11242 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = 11243 lun->be_lun; 11244 if (lun->be_lun->lun_type == T_PROCESSOR) { 11245 ctsio->io_hdr.flags |= CTL_FLAG_CONTROL_DEV; 11246 } 11247 11248 /* 11249 * Every I/O goes into the OOA queue for a 11250 * particular LUN, and stays there until completion. 11251 */ 11252 mtx_lock(&lun->lun_lock); 11253 TAILQ_INSERT_TAIL(&lun->ooa_queue, &ctsio->io_hdr, 11254 ooa_links); 11255 } 11256 } else { 11257 ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr = NULL; 11258 ctsio->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptr = NULL; 11259 } 11260 11261 /* Get command entry and return error if it is unsuppotyed. */ 11262 entry = ctl_validate_command(ctsio); 11263 if (entry == NULL) { 11264 if (lun) 11265 mtx_unlock(&lun->lun_lock); 11266 return (retval); 11267 } 11268 11269 ctsio->io_hdr.flags &= ~CTL_FLAG_DATA_MASK; 11270 ctsio->io_hdr.flags |= entry->flags & CTL_FLAG_DATA_MASK; 11271 11272 /* 11273 * Check to see whether we can send this command to LUNs that don't 11274 * exist. This should pretty much only be the case for inquiry 11275 * and request sense. Further checks, below, really require having 11276 * a LUN, so we can't really check the command anymore. Just put 11277 * it on the rtr queue. 11278 */ 11279 if (lun == NULL) { 11280 if (entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) { 11281 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11282 ctl_enqueue_rtr((union ctl_io *)ctsio); 11283 return (retval); 11284 } 11285 11286 ctl_set_unsupported_lun(ctsio); 11287 ctl_done((union ctl_io *)ctsio); 11288 CTL_DEBUG_PRINT(("ctl_scsiio_precheck: bailing out due to invalid LUN\n")); 11289 return (retval); 11290 } else { 11291 /* 11292 * Make sure we support this particular command on this LUN. 11293 * e.g., we don't support writes to the control LUN. 11294 */ 11295 if (!ctl_cmd_applicable(lun->be_lun->lun_type, entry)) { 11296 mtx_unlock(&lun->lun_lock); 11297 ctl_set_invalid_opcode(ctsio); 11298 ctl_done((union ctl_io *)ctsio); 11299 return (retval); 11300 } 11301 } 11302 11303 initidx = ctl_get_initindex(&ctsio->io_hdr.nexus); 11304 11305 /* 11306 * If we've got a request sense, it'll clear the contingent 11307 * allegiance condition. Otherwise, if we have a CA condition for 11308 * this initiator, clear it, because it sent down a command other 11309 * than request sense. 11310 */ 11311 if ((ctsio->cdb[0] != REQUEST_SENSE) 11312 && (ctl_is_set(lun->have_ca, initidx))) 11313 ctl_clear_mask(lun->have_ca, initidx); 11314 11315 /* 11316 * If the command has this flag set, it handles its own unit 11317 * attention reporting, we shouldn't do anything. Otherwise we 11318 * check for any pending unit attentions, and send them back to the 11319 * initiator. We only do this when a command initially comes in, 11320 * not when we pull it off the blocked queue. 11321 * 11322 * According to SAM-3, section 5.3.2, the order that things get 11323 * presented back to the host is basically unit attentions caused 11324 * by some sort of reset event, busy status, reservation conflicts 11325 * or task set full, and finally any other status. 11326 * 11327 * One issue here is that some of the unit attentions we report 11328 * don't fall into the "reset" category (e.g. "reported luns data 11329 * has changed"). So reporting it here, before the reservation 11330 * check, may be technically wrong. I guess the only thing to do 11331 * would be to check for and report the reset events here, and then 11332 * check for the other unit attention types after we check for a 11333 * reservation conflict. 11334 * 11335 * XXX KDM need to fix this 11336 */ 11337 if ((entry->flags & CTL_CMD_FLAG_NO_SENSE) == 0) { 11338 ctl_ua_type ua_type; 11339 11340 ua_type = lun->pending_sense[initidx].ua_pending; 11341 if (ua_type != CTL_UA_NONE) { 11342 scsi_sense_data_type sense_format; 11343 11344 if (lun != NULL) 11345 sense_format = (lun->flags & 11346 CTL_LUN_SENSE_DESC) ? SSD_TYPE_DESC : 11347 SSD_TYPE_FIXED; 11348 else 11349 sense_format = SSD_TYPE_FIXED; 11350 11351 ua_type = ctl_build_ua(ua_type, &ctsio->sense_data, 11352 sense_format); 11353 if (ua_type != CTL_UA_NONE) { 11354 ctsio->scsi_status = SCSI_STATUS_CHECK_COND; 11355 ctsio->io_hdr.status = CTL_SCSI_ERROR | 11356 CTL_AUTOSENSE; 11357 ctsio->sense_len = SSD_FULL_SIZE; 11358 lun->pending_sense[initidx].ua_pending &= 11359 ~ua_type; 11360 mtx_unlock(&lun->lun_lock); 11361 ctl_done((union ctl_io *)ctsio); 11362 return (retval); 11363 } 11364 } 11365 } 11366 11367 11368 if (ctl_scsiio_lun_check(ctl_softc, lun, entry, ctsio) != 0) { 11369 mtx_unlock(&lun->lun_lock); 11370 ctl_done((union ctl_io *)ctsio); 11371 return (retval); 11372 } 11373 11374 /* 11375 * XXX CHD this is where we want to send IO to other side if 11376 * this LUN is secondary on this SC. We will need to make a copy 11377 * of the IO and flag the IO on this side as SENT_2OTHER and the flag 11378 * the copy we send as FROM_OTHER. 11379 * We also need to stuff the address of the original IO so we can 11380 * find it easily. Something similar will need be done on the other 11381 * side so when we are done we can find the copy. 11382 */ 11383 if ((lun->flags & CTL_LUN_PRIMARY_SC) == 0) { 11384 union ctl_ha_msg msg_info; 11385 int isc_retval; 11386 11387 ctsio->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11388 11389 msg_info.hdr.msg_type = CTL_MSG_SERIALIZE; 11390 msg_info.hdr.original_sc = (union ctl_io *)ctsio; 11391#if 0 11392 printf("1. ctsio %p\n", ctsio); 11393#endif 11394 msg_info.hdr.serializing_sc = NULL; 11395 msg_info.hdr.nexus = ctsio->io_hdr.nexus; 11396 msg_info.scsi.tag_num = ctsio->tag_num; 11397 msg_info.scsi.tag_type = ctsio->tag_type; 11398 memcpy(msg_info.scsi.cdb, ctsio->cdb, CTL_MAX_CDBLEN); 11399 11400 ctsio->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 11401 11402 if ((isc_retval=ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11403 (void *)&msg_info, sizeof(msg_info), 0)) > 11404 CTL_HA_STATUS_SUCCESS) { 11405 printf("CTL:precheck, ctl_ha_msg_send returned %d\n", 11406 isc_retval); 11407 printf("CTL:opcode is %x\n", ctsio->cdb[0]); 11408 } else { 11409#if 0 11410 printf("CTL:Precheck sent msg, opcode is %x\n",opcode); 11411#endif 11412 } 11413 11414 /* 11415 * XXX KDM this I/O is off the incoming queue, but hasn't 11416 * been inserted on any other queue. We may need to come 11417 * up with a holding queue while we wait for serialization 11418 * so that we have an idea of what we're waiting for from 11419 * the other side. 11420 */ 11421 mtx_unlock(&lun->lun_lock); 11422 return (retval); 11423 } 11424 11425 switch (ctl_check_ooa(lun, (union ctl_io *)ctsio, 11426 (union ctl_io *)TAILQ_PREV(&ctsio->io_hdr, 11427 ctl_ooaq, ooa_links))) { 11428 case CTL_ACTION_BLOCK: 11429 ctsio->io_hdr.flags |= CTL_FLAG_BLOCKED; 11430 TAILQ_INSERT_TAIL(&lun->blocked_queue, &ctsio->io_hdr, 11431 blocked_links); 11432 mtx_unlock(&lun->lun_lock); 11433 return (retval); 11434 case CTL_ACTION_PASS: 11435 case CTL_ACTION_SKIP: 11436 ctsio->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11437 mtx_unlock(&lun->lun_lock); 11438 ctl_enqueue_rtr((union ctl_io *)ctsio); 11439 break; 11440 case CTL_ACTION_OVERLAP: 11441 mtx_unlock(&lun->lun_lock); 11442 ctl_set_overlapped_cmd(ctsio); 11443 ctl_done((union ctl_io *)ctsio); 11444 break; 11445 case CTL_ACTION_OVERLAP_TAG: 11446 mtx_unlock(&lun->lun_lock); 11447 ctl_set_overlapped_tag(ctsio, ctsio->tag_num & 0xff); 11448 ctl_done((union ctl_io *)ctsio); 11449 break; 11450 case CTL_ACTION_ERROR: 11451 default: 11452 mtx_unlock(&lun->lun_lock); 11453 ctl_set_internal_failure(ctsio, 11454 /*sks_valid*/ 0, 11455 /*retry_count*/ 0); 11456 ctl_done((union ctl_io *)ctsio); 11457 break; 11458 } 11459 return (retval); 11460} 11461 11462const struct ctl_cmd_entry * 11463ctl_get_cmd_entry(struct ctl_scsiio *ctsio) 11464{ 11465 const struct ctl_cmd_entry *entry; 11466 int service_action; 11467 11468 entry = &ctl_cmd_table[ctsio->cdb[0]]; 11469 if (entry->flags & CTL_CMD_FLAG_SA5) { 11470 service_action = ctsio->cdb[1] & SERVICE_ACTION_MASK; 11471 entry = &((const struct ctl_cmd_entry *) 11472 entry->execute)[service_action]; 11473 } 11474 return (entry); 11475} 11476 11477const struct ctl_cmd_entry * 11478ctl_validate_command(struct ctl_scsiio *ctsio) 11479{ 11480 const struct ctl_cmd_entry *entry; 11481 int i; 11482 uint8_t diff; 11483 11484 entry = ctl_get_cmd_entry(ctsio); 11485 if (entry->execute == NULL) { 11486 ctl_set_invalid_opcode(ctsio); 11487 ctl_done((union ctl_io *)ctsio); 11488 return (NULL); 11489 } 11490 KASSERT(entry->length > 0, 11491 ("Not defined length for command 0x%02x/0x%02x", 11492 ctsio->cdb[0], ctsio->cdb[1])); 11493 for (i = 1; i < entry->length; i++) { 11494 diff = ctsio->cdb[i] & ~entry->usage[i - 1]; 11495 if (diff == 0) 11496 continue; 11497 ctl_set_invalid_field(ctsio, 11498 /*sks_valid*/ 1, 11499 /*command*/ 1, 11500 /*field*/ i, 11501 /*bit_valid*/ 1, 11502 /*bit*/ fls(diff) - 1); 11503 ctl_done((union ctl_io *)ctsio); 11504 return (NULL); 11505 } 11506 return (entry); 11507} 11508 11509static int 11510ctl_cmd_applicable(uint8_t lun_type, const struct ctl_cmd_entry *entry) 11511{ 11512 11513 switch (lun_type) { 11514 case T_PROCESSOR: 11515 if (((entry->flags & CTL_CMD_FLAG_OK_ON_PROC) == 0) && 11516 ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) == 0)) 11517 return (0); 11518 break; 11519 case T_DIRECT: 11520 if (((entry->flags & CTL_CMD_FLAG_OK_ON_SLUN) == 0) && 11521 ((entry->flags & CTL_CMD_FLAG_OK_ON_ALL_LUNS) == 0)) 11522 return (0); 11523 break; 11524 default: 11525 return (0); 11526 } 11527 return (1); 11528} 11529 11530static int 11531ctl_scsiio(struct ctl_scsiio *ctsio) 11532{ 11533 int retval; 11534 const struct ctl_cmd_entry *entry; 11535 11536 retval = CTL_RETVAL_COMPLETE; 11537 11538 CTL_DEBUG_PRINT(("ctl_scsiio cdb[0]=%02X\n", ctsio->cdb[0])); 11539 11540 entry = ctl_get_cmd_entry(ctsio); 11541 11542 /* 11543 * If this I/O has been aborted, just send it straight to 11544 * ctl_done() without executing it. 11545 */ 11546 if (ctsio->io_hdr.flags & CTL_FLAG_ABORT) { 11547 ctl_done((union ctl_io *)ctsio); 11548 goto bailout; 11549 } 11550 11551 /* 11552 * All the checks should have been handled by ctl_scsiio_precheck(). 11553 * We should be clear now to just execute the I/O. 11554 */ 11555 retval = entry->execute(ctsio); 11556 11557bailout: 11558 return (retval); 11559} 11560 11561/* 11562 * Since we only implement one target right now, a bus reset simply resets 11563 * our single target. 11564 */ 11565static int 11566ctl_bus_reset(struct ctl_softc *ctl_softc, union ctl_io *io) 11567{ 11568 return(ctl_target_reset(ctl_softc, io, CTL_UA_BUS_RESET)); 11569} 11570 11571static int 11572ctl_target_reset(struct ctl_softc *ctl_softc, union ctl_io *io, 11573 ctl_ua_type ua_type) 11574{ 11575 struct ctl_lun *lun; 11576 int retval; 11577 11578 if (!(io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 11579 union ctl_ha_msg msg_info; 11580 11581 io->io_hdr.flags |= CTL_FLAG_SENT_2OTHER_SC; 11582 msg_info.hdr.nexus = io->io_hdr.nexus; 11583 if (ua_type==CTL_UA_TARG_RESET) 11584 msg_info.task.task_action = CTL_TASK_TARGET_RESET; 11585 else 11586 msg_info.task.task_action = CTL_TASK_BUS_RESET; 11587 msg_info.hdr.msg_type = CTL_MSG_MANAGE_TASKS; 11588 msg_info.hdr.original_sc = NULL; 11589 msg_info.hdr.serializing_sc = NULL; 11590 if (CTL_HA_STATUS_SUCCESS != ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11591 (void *)&msg_info, sizeof(msg_info), 0)) { 11592 } 11593 } 11594 retval = 0; 11595 11596 mtx_lock(&ctl_softc->ctl_lock); 11597 STAILQ_FOREACH(lun, &ctl_softc->lun_list, links) 11598 retval += ctl_lun_reset(lun, io, ua_type); 11599 mtx_unlock(&ctl_softc->ctl_lock); 11600 11601 return (retval); 11602} 11603 11604/* 11605 * The LUN should always be set. The I/O is optional, and is used to 11606 * distinguish between I/Os sent by this initiator, and by other 11607 * initiators. We set unit attention for initiators other than this one. 11608 * SAM-3 is vague on this point. It does say that a unit attention should 11609 * be established for other initiators when a LUN is reset (see section 11610 * 5.7.3), but it doesn't specifically say that the unit attention should 11611 * be established for this particular initiator when a LUN is reset. Here 11612 * is the relevant text, from SAM-3 rev 8: 11613 * 11614 * 5.7.2 When a SCSI initiator port aborts its own tasks 11615 * 11616 * When a SCSI initiator port causes its own task(s) to be aborted, no 11617 * notification that the task(s) have been aborted shall be returned to 11618 * the SCSI initiator port other than the completion response for the 11619 * command or task management function action that caused the task(s) to 11620 * be aborted and notification(s) associated with related effects of the 11621 * action (e.g., a reset unit attention condition). 11622 * 11623 * XXX KDM for now, we're setting unit attention for all initiators. 11624 */ 11625static int 11626ctl_lun_reset(struct ctl_lun *lun, union ctl_io *io, ctl_ua_type ua_type) 11627{ 11628 union ctl_io *xio; 11629#if 0 11630 uint32_t initindex; 11631#endif 11632 int i; 11633 11634 mtx_lock(&lun->lun_lock); 11635 /* 11636 * Run through the OOA queue and abort each I/O. 11637 */ 11638#if 0 11639 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11640#endif 11641 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11642 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11643 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11644 } 11645 11646 /* 11647 * This version sets unit attention for every 11648 */ 11649#if 0 11650 initindex = ctl_get_initindex(&io->io_hdr.nexus); 11651 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11652 if (initindex == i) 11653 continue; 11654 lun->pending_sense[i].ua_pending |= ua_type; 11655 } 11656#endif 11657 11658 /* 11659 * A reset (any kind, really) clears reservations established with 11660 * RESERVE/RELEASE. It does not clear reservations established 11661 * with PERSISTENT RESERVE OUT, but we don't support that at the 11662 * moment anyway. See SPC-2, section 5.6. SPC-3 doesn't address 11663 * reservations made with the RESERVE/RELEASE commands, because 11664 * those commands are obsolete in SPC-3. 11665 */ 11666 lun->flags &= ~CTL_LUN_RESERVED; 11667 11668 for (i = 0; i < CTL_MAX_INITIATORS; i++) { 11669 ctl_clear_mask(lun->have_ca, i); 11670 lun->pending_sense[i].ua_pending |= ua_type; 11671 } 11672 mtx_unlock(&lun->lun_lock); 11673 11674 return (0); 11675} 11676 11677static int 11678ctl_abort_task(union ctl_io *io) 11679{ 11680 union ctl_io *xio; 11681 struct ctl_lun *lun; 11682 struct ctl_softc *ctl_softc; 11683#if 0 11684 struct sbuf sb; 11685 char printbuf[128]; 11686#endif 11687 int found; 11688 uint32_t targ_lun; 11689 11690 ctl_softc = control_softc; 11691 found = 0; 11692 11693 /* 11694 * Look up the LUN. 11695 */ 11696 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11697 mtx_lock(&ctl_softc->ctl_lock); 11698 if ((targ_lun < CTL_MAX_LUNS) 11699 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11700 lun = ctl_softc->ctl_luns[targ_lun]; 11701 else { 11702 mtx_unlock(&ctl_softc->ctl_lock); 11703 goto bailout; 11704 } 11705 11706#if 0 11707 printf("ctl_abort_task: called for lun %lld, tag %d type %d\n", 11708 lun->lun, io->taskio.tag_num, io->taskio.tag_type); 11709#endif 11710 11711 mtx_lock(&lun->lun_lock); 11712 mtx_unlock(&ctl_softc->ctl_lock); 11713 /* 11714 * Run through the OOA queue and attempt to find the given I/O. 11715 * The target port, initiator ID, tag type and tag number have to 11716 * match the values that we got from the initiator. If we have an 11717 * untagged command to abort, simply abort the first untagged command 11718 * we come to. We only allow one untagged command at a time of course. 11719 */ 11720#if 0 11721 TAILQ_FOREACH((struct ctl_io_hdr *)xio, &lun->ooa_queue, ooa_links) { 11722#endif 11723 for (xio = (union ctl_io *)TAILQ_FIRST(&lun->ooa_queue); xio != NULL; 11724 xio = (union ctl_io *)TAILQ_NEXT(&xio->io_hdr, ooa_links)) { 11725#if 0 11726 sbuf_new(&sb, printbuf, sizeof(printbuf), SBUF_FIXEDLEN); 11727 11728 sbuf_printf(&sb, "LUN %lld tag %d type %d%s%s%s%s: ", 11729 lun->lun, xio->scsiio.tag_num, 11730 xio->scsiio.tag_type, 11731 (xio->io_hdr.blocked_links.tqe_prev 11732 == NULL) ? "" : " BLOCKED", 11733 (xio->io_hdr.flags & 11734 CTL_FLAG_DMA_INPROG) ? " DMA" : "", 11735 (xio->io_hdr.flags & 11736 CTL_FLAG_ABORT) ? " ABORT" : "", 11737 (xio->io_hdr.flags & 11738 CTL_FLAG_IS_WAS_ON_RTR ? " RTR" : "")); 11739 ctl_scsi_command_string(&xio->scsiio, NULL, &sb); 11740 sbuf_finish(&sb); 11741 printf("%s\n", sbuf_data(&sb)); 11742#endif 11743 11744 if ((xio->io_hdr.nexus.targ_port == io->io_hdr.nexus.targ_port) 11745 && (xio->io_hdr.nexus.initid.id == 11746 io->io_hdr.nexus.initid.id)) { 11747 /* 11748 * If the abort says that the task is untagged, the 11749 * task in the queue must be untagged. Otherwise, 11750 * we just check to see whether the tag numbers 11751 * match. This is because the QLogic firmware 11752 * doesn't pass back the tag type in an abort 11753 * request. 11754 */ 11755#if 0 11756 if (((xio->scsiio.tag_type == CTL_TAG_UNTAGGED) 11757 && (io->taskio.tag_type == CTL_TAG_UNTAGGED)) 11758 || (xio->scsiio.tag_num == io->taskio.tag_num)) { 11759#endif 11760 /* 11761 * XXX KDM we've got problems with FC, because it 11762 * doesn't send down a tag type with aborts. So we 11763 * can only really go by the tag number... 11764 * This may cause problems with parallel SCSI. 11765 * Need to figure that out!! 11766 */ 11767 if (xio->scsiio.tag_num == io->taskio.tag_num) { 11768 xio->io_hdr.flags |= CTL_FLAG_ABORT; 11769 found = 1; 11770 if ((io->io_hdr.flags & 11771 CTL_FLAG_FROM_OTHER_SC) == 0 && 11772 !(lun->flags & CTL_LUN_PRIMARY_SC)) { 11773 union ctl_ha_msg msg_info; 11774 11775 io->io_hdr.flags |= 11776 CTL_FLAG_SENT_2OTHER_SC; 11777 msg_info.hdr.nexus = io->io_hdr.nexus; 11778 msg_info.task.task_action = 11779 CTL_TASK_ABORT_TASK; 11780 msg_info.task.tag_num = 11781 io->taskio.tag_num; 11782 msg_info.task.tag_type = 11783 io->taskio.tag_type; 11784 msg_info.hdr.msg_type = 11785 CTL_MSG_MANAGE_TASKS; 11786 msg_info.hdr.original_sc = NULL; 11787 msg_info.hdr.serializing_sc = NULL; 11788#if 0 11789 printf("Sent Abort to other side\n"); 11790#endif 11791 if (CTL_HA_STATUS_SUCCESS != 11792 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11793 (void *)&msg_info, 11794 sizeof(msg_info), 0)) { 11795 } 11796 } 11797#if 0 11798 printf("ctl_abort_task: found I/O to abort\n"); 11799#endif 11800 break; 11801 } 11802 } 11803 } 11804 mtx_unlock(&lun->lun_lock); 11805 11806bailout: 11807 11808 if (found == 0) { 11809 /* 11810 * This isn't really an error. It's entirely possible for 11811 * the abort and command completion to cross on the wire. 11812 * This is more of an informative/diagnostic error. 11813 */ 11814#if 0 11815 printf("ctl_abort_task: ABORT sent for nonexistent I/O: " 11816 "%d:%d:%d:%d tag %d type %d\n", 11817 io->io_hdr.nexus.initid.id, 11818 io->io_hdr.nexus.targ_port, 11819 io->io_hdr.nexus.targ_target.id, 11820 io->io_hdr.nexus.targ_lun, io->taskio.tag_num, 11821 io->taskio.tag_type); 11822#endif 11823 return (1); 11824 } else 11825 return (0); 11826} 11827 11828static void 11829ctl_run_task(union ctl_io *io) 11830{ 11831 struct ctl_softc *ctl_softc; 11832 int retval; 11833 const char *task_desc; 11834 11835 CTL_DEBUG_PRINT(("ctl_run_task\n")); 11836 11837 ctl_softc = control_softc; 11838 retval = 0; 11839 11840 KASSERT(io->io_hdr.io_type == CTL_IO_TASK, 11841 ("ctl_run_task: Unextected io_type %d\n", 11842 io->io_hdr.io_type)); 11843 11844 task_desc = ctl_scsi_task_string(&io->taskio); 11845 if (task_desc != NULL) { 11846#ifdef NEEDTOPORT 11847 csevent_log(CSC_CTL | CSC_SHELF_SW | 11848 CTL_TASK_REPORT, 11849 csevent_LogType_Trace, 11850 csevent_Severity_Information, 11851 csevent_AlertLevel_Green, 11852 csevent_FRU_Firmware, 11853 csevent_FRU_Unknown, 11854 "CTL: received task: %s",task_desc); 11855#endif 11856 } else { 11857#ifdef NEEDTOPORT 11858 csevent_log(CSC_CTL | CSC_SHELF_SW | 11859 CTL_TASK_REPORT, 11860 csevent_LogType_Trace, 11861 csevent_Severity_Information, 11862 csevent_AlertLevel_Green, 11863 csevent_FRU_Firmware, 11864 csevent_FRU_Unknown, 11865 "CTL: received unknown task " 11866 "type: %d (%#x)", 11867 io->taskio.task_action, 11868 io->taskio.task_action); 11869#endif 11870 } 11871 switch (io->taskio.task_action) { 11872 case CTL_TASK_ABORT_TASK: 11873 retval = ctl_abort_task(io); 11874 break; 11875 case CTL_TASK_ABORT_TASK_SET: 11876 break; 11877 case CTL_TASK_CLEAR_ACA: 11878 break; 11879 case CTL_TASK_CLEAR_TASK_SET: 11880 break; 11881 case CTL_TASK_LUN_RESET: { 11882 struct ctl_lun *lun; 11883 uint32_t targ_lun; 11884 int retval; 11885 11886 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11887 mtx_lock(&ctl_softc->ctl_lock); 11888 if ((targ_lun < CTL_MAX_LUNS) 11889 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 11890 lun = ctl_softc->ctl_luns[targ_lun]; 11891 else { 11892 mtx_unlock(&ctl_softc->ctl_lock); 11893 retval = 1; 11894 break; 11895 } 11896 11897 if (!(io->io_hdr.flags & 11898 CTL_FLAG_FROM_OTHER_SC)) { 11899 union ctl_ha_msg msg_info; 11900 11901 io->io_hdr.flags |= 11902 CTL_FLAG_SENT_2OTHER_SC; 11903 msg_info.hdr.msg_type = 11904 CTL_MSG_MANAGE_TASKS; 11905 msg_info.hdr.nexus = io->io_hdr.nexus; 11906 msg_info.task.task_action = 11907 CTL_TASK_LUN_RESET; 11908 msg_info.hdr.original_sc = NULL; 11909 msg_info.hdr.serializing_sc = NULL; 11910 if (CTL_HA_STATUS_SUCCESS != 11911 ctl_ha_msg_send(CTL_HA_CHAN_CTL, 11912 (void *)&msg_info, 11913 sizeof(msg_info), 0)) { 11914 } 11915 } 11916 11917 retval = ctl_lun_reset(lun, io, 11918 CTL_UA_LUN_RESET); 11919 mtx_unlock(&ctl_softc->ctl_lock); 11920 break; 11921 } 11922 case CTL_TASK_TARGET_RESET: 11923 retval = ctl_target_reset(ctl_softc, io, CTL_UA_TARG_RESET); 11924 break; 11925 case CTL_TASK_BUS_RESET: 11926 retval = ctl_bus_reset(ctl_softc, io); 11927 break; 11928 case CTL_TASK_PORT_LOGIN: 11929 break; 11930 case CTL_TASK_PORT_LOGOUT: 11931 break; 11932 default: 11933 printf("ctl_run_task: got unknown task management event %d\n", 11934 io->taskio.task_action); 11935 break; 11936 } 11937 if (retval == 0) 11938 io->io_hdr.status = CTL_SUCCESS; 11939 else 11940 io->io_hdr.status = CTL_ERROR; 11941 11942 /* 11943 * This will queue this I/O to the done queue, but the 11944 * work thread won't be able to process it until we 11945 * return and the lock is released. 11946 */ 11947 ctl_done(io); 11948} 11949 11950/* 11951 * For HA operation. Handle commands that come in from the other 11952 * controller. 11953 */ 11954static void 11955ctl_handle_isc(union ctl_io *io) 11956{ 11957 int free_io; 11958 struct ctl_lun *lun; 11959 struct ctl_softc *ctl_softc; 11960 uint32_t targ_lun; 11961 11962 ctl_softc = control_softc; 11963 11964 targ_lun = io->io_hdr.nexus.targ_mapped_lun; 11965 lun = ctl_softc->ctl_luns[targ_lun]; 11966 11967 switch (io->io_hdr.msg_type) { 11968 case CTL_MSG_SERIALIZE: 11969 free_io = ctl_serialize_other_sc_cmd(&io->scsiio); 11970 break; 11971 case CTL_MSG_R2R: { 11972 const struct ctl_cmd_entry *entry; 11973 11974 /* 11975 * This is only used in SER_ONLY mode. 11976 */ 11977 free_io = 0; 11978 entry = ctl_get_cmd_entry(&io->scsiio); 11979 mtx_lock(&lun->lun_lock); 11980 if (ctl_scsiio_lun_check(ctl_softc, lun, 11981 entry, (struct ctl_scsiio *)io) != 0) { 11982 mtx_unlock(&lun->lun_lock); 11983 ctl_done(io); 11984 break; 11985 } 11986 io->io_hdr.flags |= CTL_FLAG_IS_WAS_ON_RTR; 11987 mtx_unlock(&lun->lun_lock); 11988 ctl_enqueue_rtr(io); 11989 break; 11990 } 11991 case CTL_MSG_FINISH_IO: 11992 if (ctl_softc->ha_mode == CTL_HA_MODE_XFER) { 11993 free_io = 0; 11994 ctl_done(io); 11995 } else { 11996 free_io = 1; 11997 mtx_lock(&lun->lun_lock); 11998 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, 11999 ooa_links); 12000 ctl_check_blocked(lun); 12001 mtx_unlock(&lun->lun_lock); 12002 } 12003 break; 12004 case CTL_MSG_PERS_ACTION: 12005 ctl_hndl_per_res_out_on_other_sc( 12006 (union ctl_ha_msg *)&io->presio.pr_msg); 12007 free_io = 1; 12008 break; 12009 case CTL_MSG_BAD_JUJU: 12010 free_io = 0; 12011 ctl_done(io); 12012 break; 12013 case CTL_MSG_DATAMOVE: 12014 /* Only used in XFER mode */ 12015 free_io = 0; 12016 ctl_datamove_remote(io); 12017 break; 12018 case CTL_MSG_DATAMOVE_DONE: 12019 /* Only used in XFER mode */ 12020 free_io = 0; 12021 io->scsiio.be_move_done(io); 12022 break; 12023 default: 12024 free_io = 1; 12025 printf("%s: Invalid message type %d\n", 12026 __func__, io->io_hdr.msg_type); 12027 break; 12028 } 12029 if (free_io) 12030 ctl_free_io(io); 12031 12032} 12033 12034 12035/* 12036 * Returns the match type in the case of a match, or CTL_LUN_PAT_NONE if 12037 * there is no match. 12038 */ 12039static ctl_lun_error_pattern 12040ctl_cmd_pattern_match(struct ctl_scsiio *ctsio, struct ctl_error_desc *desc) 12041{ 12042 const struct ctl_cmd_entry *entry; 12043 ctl_lun_error_pattern filtered_pattern, pattern; 12044 12045 pattern = desc->error_pattern; 12046 12047 /* 12048 * XXX KDM we need more data passed into this function to match a 12049 * custom pattern, and we actually need to implement custom pattern 12050 * matching. 12051 */ 12052 if (pattern & CTL_LUN_PAT_CMD) 12053 return (CTL_LUN_PAT_CMD); 12054 12055 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_ANY) 12056 return (CTL_LUN_PAT_ANY); 12057 12058 entry = ctl_get_cmd_entry(ctsio); 12059 12060 filtered_pattern = entry->pattern & pattern; 12061 12062 /* 12063 * If the user requested specific flags in the pattern (e.g. 12064 * CTL_LUN_PAT_RANGE), make sure the command supports all of those 12065 * flags. 12066 * 12067 * If the user did not specify any flags, it doesn't matter whether 12068 * or not the command supports the flags. 12069 */ 12070 if ((filtered_pattern & ~CTL_LUN_PAT_MASK) != 12071 (pattern & ~CTL_LUN_PAT_MASK)) 12072 return (CTL_LUN_PAT_NONE); 12073 12074 /* 12075 * If the user asked for a range check, see if the requested LBA 12076 * range overlaps with this command's LBA range. 12077 */ 12078 if (filtered_pattern & CTL_LUN_PAT_RANGE) { 12079 uint64_t lba1; 12080 uint32_t len1; 12081 ctl_action action; 12082 int retval; 12083 12084 retval = ctl_get_lba_len((union ctl_io *)ctsio, &lba1, &len1); 12085 if (retval != 0) 12086 return (CTL_LUN_PAT_NONE); 12087 12088 action = ctl_extent_check_lba(lba1, len1, desc->lba_range.lba, 12089 desc->lba_range.len); 12090 /* 12091 * A "pass" means that the LBA ranges don't overlap, so 12092 * this doesn't match the user's range criteria. 12093 */ 12094 if (action == CTL_ACTION_PASS) 12095 return (CTL_LUN_PAT_NONE); 12096 } 12097 12098 return (filtered_pattern); 12099} 12100 12101static void 12102ctl_inject_error(struct ctl_lun *lun, union ctl_io *io) 12103{ 12104 struct ctl_error_desc *desc, *desc2; 12105 12106 mtx_assert(&lun->lun_lock, MA_OWNED); 12107 12108 STAILQ_FOREACH_SAFE(desc, &lun->error_list, links, desc2) { 12109 ctl_lun_error_pattern pattern; 12110 /* 12111 * Check to see whether this particular command matches 12112 * the pattern in the descriptor. 12113 */ 12114 pattern = ctl_cmd_pattern_match(&io->scsiio, desc); 12115 if ((pattern & CTL_LUN_PAT_MASK) == CTL_LUN_PAT_NONE) 12116 continue; 12117 12118 switch (desc->lun_error & CTL_LUN_INJ_TYPE) { 12119 case CTL_LUN_INJ_ABORTED: 12120 ctl_set_aborted(&io->scsiio); 12121 break; 12122 case CTL_LUN_INJ_MEDIUM_ERR: 12123 ctl_set_medium_error(&io->scsiio); 12124 break; 12125 case CTL_LUN_INJ_UA: 12126 /* 29h/00h POWER ON, RESET, OR BUS DEVICE RESET 12127 * OCCURRED */ 12128 ctl_set_ua(&io->scsiio, 0x29, 0x00); 12129 break; 12130 case CTL_LUN_INJ_CUSTOM: 12131 /* 12132 * We're assuming the user knows what he is doing. 12133 * Just copy the sense information without doing 12134 * checks. 12135 */ 12136 bcopy(&desc->custom_sense, &io->scsiio.sense_data, 12137 ctl_min(sizeof(desc->custom_sense), 12138 sizeof(io->scsiio.sense_data))); 12139 io->scsiio.scsi_status = SCSI_STATUS_CHECK_COND; 12140 io->scsiio.sense_len = SSD_FULL_SIZE; 12141 io->io_hdr.status = CTL_SCSI_ERROR | CTL_AUTOSENSE; 12142 break; 12143 case CTL_LUN_INJ_NONE: 12144 default: 12145 /* 12146 * If this is an error injection type we don't know 12147 * about, clear the continuous flag (if it is set) 12148 * so it will get deleted below. 12149 */ 12150 desc->lun_error &= ~CTL_LUN_INJ_CONTINUOUS; 12151 break; 12152 } 12153 /* 12154 * By default, each error injection action is a one-shot 12155 */ 12156 if (desc->lun_error & CTL_LUN_INJ_CONTINUOUS) 12157 continue; 12158 12159 STAILQ_REMOVE(&lun->error_list, desc, ctl_error_desc, links); 12160 12161 free(desc, M_CTL); 12162 } 12163} 12164 12165#ifdef CTL_IO_DELAY 12166static void 12167ctl_datamove_timer_wakeup(void *arg) 12168{ 12169 union ctl_io *io; 12170 12171 io = (union ctl_io *)arg; 12172 12173 ctl_datamove(io); 12174} 12175#endif /* CTL_IO_DELAY */ 12176 12177void 12178ctl_datamove(union ctl_io *io) 12179{ 12180 void (*fe_datamove)(union ctl_io *io); 12181 12182 mtx_assert(&control_softc->ctl_lock, MA_NOTOWNED); 12183 12184 CTL_DEBUG_PRINT(("ctl_datamove\n")); 12185 12186#ifdef CTL_TIME_IO 12187 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 12188 char str[256]; 12189 char path_str[64]; 12190 struct sbuf sb; 12191 12192 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 12193 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12194 12195 sbuf_cat(&sb, path_str); 12196 switch (io->io_hdr.io_type) { 12197 case CTL_IO_SCSI: 12198 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 12199 sbuf_printf(&sb, "\n"); 12200 sbuf_cat(&sb, path_str); 12201 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12202 io->scsiio.tag_num, io->scsiio.tag_type); 12203 break; 12204 case CTL_IO_TASK: 12205 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 12206 "Tag Type: %d\n", io->taskio.task_action, 12207 io->taskio.tag_num, io->taskio.tag_type); 12208 break; 12209 default: 12210 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12211 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 12212 break; 12213 } 12214 sbuf_cat(&sb, path_str); 12215 sbuf_printf(&sb, "ctl_datamove: %jd seconds\n", 12216 (intmax_t)time_uptime - io->io_hdr.start_time); 12217 sbuf_finish(&sb); 12218 printf("%s", sbuf_data(&sb)); 12219 } 12220#endif /* CTL_TIME_IO */ 12221 12222#ifdef CTL_IO_DELAY 12223 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 12224 struct ctl_lun *lun; 12225 12226 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12227 12228 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 12229 } else { 12230 struct ctl_lun *lun; 12231 12232 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 12233 if ((lun != NULL) 12234 && (lun->delay_info.datamove_delay > 0)) { 12235 struct callout *callout; 12236 12237 callout = (struct callout *)&io->io_hdr.timer_bytes; 12238 callout_init(callout, /*mpsafe*/ 1); 12239 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 12240 callout_reset(callout, 12241 lun->delay_info.datamove_delay * hz, 12242 ctl_datamove_timer_wakeup, io); 12243 if (lun->delay_info.datamove_type == 12244 CTL_DELAY_TYPE_ONESHOT) 12245 lun->delay_info.datamove_delay = 0; 12246 return; 12247 } 12248 } 12249#endif 12250 12251 /* 12252 * This command has been aborted. Set the port status, so we fail 12253 * the data move. 12254 */ 12255 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 12256 printf("ctl_datamove: tag 0x%04x on (%ju:%d:%ju:%d) aborted\n", 12257 io->scsiio.tag_num,(uintmax_t)io->io_hdr.nexus.initid.id, 12258 io->io_hdr.nexus.targ_port, 12259 (uintmax_t)io->io_hdr.nexus.targ_target.id, 12260 io->io_hdr.nexus.targ_lun); 12261 io->io_hdr.status = CTL_CMD_ABORTED; 12262 io->io_hdr.port_status = 31337; 12263 /* 12264 * Note that the backend, in this case, will get the 12265 * callback in its context. In other cases it may get 12266 * called in the frontend's interrupt thread context. 12267 */ 12268 io->scsiio.be_move_done(io); 12269 return; 12270 } 12271 12272 /* 12273 * If we're in XFER mode and this I/O is from the other shelf 12274 * controller, we need to send the DMA to the other side to 12275 * actually transfer the data to/from the host. In serialize only 12276 * mode the transfer happens below CTL and ctl_datamove() is only 12277 * called on the machine that originally received the I/O. 12278 */ 12279 if ((control_softc->ha_mode == CTL_HA_MODE_XFER) 12280 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 12281 union ctl_ha_msg msg; 12282 uint32_t sg_entries_sent; 12283 int do_sg_copy; 12284 int i; 12285 12286 memset(&msg, 0, sizeof(msg)); 12287 msg.hdr.msg_type = CTL_MSG_DATAMOVE; 12288 msg.hdr.original_sc = io->io_hdr.original_sc; 12289 msg.hdr.serializing_sc = io; 12290 msg.hdr.nexus = io->io_hdr.nexus; 12291 msg.dt.flags = io->io_hdr.flags; 12292 /* 12293 * We convert everything into a S/G list here. We can't 12294 * pass by reference, only by value between controllers. 12295 * So we can't pass a pointer to the S/G list, only as many 12296 * S/G entries as we can fit in here. If it's possible for 12297 * us to get more than CTL_HA_MAX_SG_ENTRIES S/G entries, 12298 * then we need to break this up into multiple transfers. 12299 */ 12300 if (io->scsiio.kern_sg_entries == 0) { 12301 msg.dt.kern_sg_entries = 1; 12302 /* 12303 * If this is in cached memory, flush the cache 12304 * before we send the DMA request to the other 12305 * controller. We want to do this in either the 12306 * read or the write case. The read case is 12307 * straightforward. In the write case, we want to 12308 * make sure nothing is in the local cache that 12309 * could overwrite the DMAed data. 12310 */ 12311 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12312 /* 12313 * XXX KDM use bus_dmamap_sync() here. 12314 */ 12315 } 12316 12317 /* 12318 * Convert to a physical address if this is a 12319 * virtual address. 12320 */ 12321 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR) { 12322 msg.dt.sg_list[0].addr = 12323 io->scsiio.kern_data_ptr; 12324 } else { 12325 /* 12326 * XXX KDM use busdma here! 12327 */ 12328#if 0 12329 msg.dt.sg_list[0].addr = (void *) 12330 vtophys(io->scsiio.kern_data_ptr); 12331#endif 12332 } 12333 12334 msg.dt.sg_list[0].len = io->scsiio.kern_data_len; 12335 do_sg_copy = 0; 12336 } else { 12337 struct ctl_sg_entry *sgl; 12338 12339 do_sg_copy = 1; 12340 msg.dt.kern_sg_entries = io->scsiio.kern_sg_entries; 12341 sgl = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 12342 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12343 /* 12344 * XXX KDM use bus_dmamap_sync() here. 12345 */ 12346 } 12347 } 12348 12349 msg.dt.kern_data_len = io->scsiio.kern_data_len; 12350 msg.dt.kern_total_len = io->scsiio.kern_total_len; 12351 msg.dt.kern_data_resid = io->scsiio.kern_data_resid; 12352 msg.dt.kern_rel_offset = io->scsiio.kern_rel_offset; 12353 msg.dt.sg_sequence = 0; 12354 12355 /* 12356 * Loop until we've sent all of the S/G entries. On the 12357 * other end, we'll recompose these S/G entries into one 12358 * contiguous list before passing it to the 12359 */ 12360 for (sg_entries_sent = 0; sg_entries_sent < 12361 msg.dt.kern_sg_entries; msg.dt.sg_sequence++) { 12362 msg.dt.cur_sg_entries = ctl_min((sizeof(msg.dt.sg_list)/ 12363 sizeof(msg.dt.sg_list[0])), 12364 msg.dt.kern_sg_entries - sg_entries_sent); 12365 12366 if (do_sg_copy != 0) { 12367 struct ctl_sg_entry *sgl; 12368 int j; 12369 12370 sgl = (struct ctl_sg_entry *) 12371 io->scsiio.kern_data_ptr; 12372 /* 12373 * If this is in cached memory, flush the cache 12374 * before we send the DMA request to the other 12375 * controller. We want to do this in either 12376 * the * read or the write case. The read 12377 * case is straightforward. In the write 12378 * case, we want to make sure nothing is 12379 * in the local cache that could overwrite 12380 * the DMAed data. 12381 */ 12382 12383 for (i = sg_entries_sent, j = 0; 12384 i < msg.dt.cur_sg_entries; i++, j++) { 12385 if ((io->io_hdr.flags & 12386 CTL_FLAG_NO_DATASYNC) == 0) { 12387 /* 12388 * XXX KDM use bus_dmamap_sync() 12389 */ 12390 } 12391 if ((io->io_hdr.flags & 12392 CTL_FLAG_BUS_ADDR) == 0) { 12393 /* 12394 * XXX KDM use busdma. 12395 */ 12396#if 0 12397 msg.dt.sg_list[j].addr =(void *) 12398 vtophys(sgl[i].addr); 12399#endif 12400 } else { 12401 msg.dt.sg_list[j].addr = 12402 sgl[i].addr; 12403 } 12404 msg.dt.sg_list[j].len = sgl[i].len; 12405 } 12406 } 12407 12408 sg_entries_sent += msg.dt.cur_sg_entries; 12409 if (sg_entries_sent >= msg.dt.kern_sg_entries) 12410 msg.dt.sg_last = 1; 12411 else 12412 msg.dt.sg_last = 0; 12413 12414 /* 12415 * XXX KDM drop and reacquire the lock here? 12416 */ 12417 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 12418 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 12419 /* 12420 * XXX do something here. 12421 */ 12422 } 12423 12424 msg.dt.sent_sg_entries = sg_entries_sent; 12425 } 12426 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12427 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) 12428 ctl_failover_io(io, /*have_lock*/ 0); 12429 12430 } else { 12431 12432 /* 12433 * Lookup the fe_datamove() function for this particular 12434 * front end. 12435 */ 12436 fe_datamove = 12437 control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12438 12439 fe_datamove(io); 12440 } 12441} 12442 12443static void 12444ctl_send_datamove_done(union ctl_io *io, int have_lock) 12445{ 12446 union ctl_ha_msg msg; 12447 int isc_status; 12448 12449 memset(&msg, 0, sizeof(msg)); 12450 12451 msg.hdr.msg_type = CTL_MSG_DATAMOVE_DONE; 12452 msg.hdr.original_sc = io; 12453 msg.hdr.serializing_sc = io->io_hdr.serializing_sc; 12454 msg.hdr.nexus = io->io_hdr.nexus; 12455 msg.hdr.status = io->io_hdr.status; 12456 msg.scsi.tag_num = io->scsiio.tag_num; 12457 msg.scsi.tag_type = io->scsiio.tag_type; 12458 msg.scsi.scsi_status = io->scsiio.scsi_status; 12459 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 12460 sizeof(io->scsiio.sense_data)); 12461 msg.scsi.sense_len = io->scsiio.sense_len; 12462 msg.scsi.sense_residual = io->scsiio.sense_residual; 12463 msg.scsi.fetd_status = io->io_hdr.port_status; 12464 msg.scsi.residual = io->scsiio.residual; 12465 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 12466 12467 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 12468 ctl_failover_io(io, /*have_lock*/ have_lock); 12469 return; 12470 } 12471 12472 isc_status = ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0); 12473 if (isc_status > CTL_HA_STATUS_SUCCESS) { 12474 /* XXX do something if this fails */ 12475 } 12476 12477} 12478 12479/* 12480 * The DMA to the remote side is done, now we need to tell the other side 12481 * we're done so it can continue with its data movement. 12482 */ 12483static void 12484ctl_datamove_remote_write_cb(struct ctl_ha_dt_req *rq) 12485{ 12486 union ctl_io *io; 12487 12488 io = rq->context; 12489 12490 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12491 printf("%s: ISC DMA write failed with error %d", __func__, 12492 rq->ret); 12493 ctl_set_internal_failure(&io->scsiio, 12494 /*sks_valid*/ 1, 12495 /*retry_count*/ rq->ret); 12496 } 12497 12498 ctl_dt_req_free(rq); 12499 12500 /* 12501 * In this case, we had to malloc the memory locally. Free it. 12502 */ 12503 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12504 int i; 12505 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12506 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12507 } 12508 /* 12509 * The data is in local and remote memory, so now we need to send 12510 * status (good or back) back to the other side. 12511 */ 12512 ctl_send_datamove_done(io, /*have_lock*/ 0); 12513} 12514 12515/* 12516 * We've moved the data from the host/controller into local memory. Now we 12517 * need to push it over to the remote controller's memory. 12518 */ 12519static int 12520ctl_datamove_remote_dm_write_cb(union ctl_io *io) 12521{ 12522 int retval; 12523 12524 retval = 0; 12525 12526 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_WRITE, 12527 ctl_datamove_remote_write_cb); 12528 12529 return (retval); 12530} 12531 12532static void 12533ctl_datamove_remote_write(union ctl_io *io) 12534{ 12535 int retval; 12536 void (*fe_datamove)(union ctl_io *io); 12537 12538 /* 12539 * - Get the data from the host/HBA into local memory. 12540 * - DMA memory from the local controller to the remote controller. 12541 * - Send status back to the remote controller. 12542 */ 12543 12544 retval = ctl_datamove_remote_sgl_setup(io); 12545 if (retval != 0) 12546 return; 12547 12548 /* Switch the pointer over so the FETD knows what to do */ 12549 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12550 12551 /* 12552 * Use a custom move done callback, since we need to send completion 12553 * back to the other controller, not to the backend on this side. 12554 */ 12555 io->scsiio.be_move_done = ctl_datamove_remote_dm_write_cb; 12556 12557 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12558 12559 fe_datamove(io); 12560 12561 return; 12562 12563} 12564 12565static int 12566ctl_datamove_remote_dm_read_cb(union ctl_io *io) 12567{ 12568#if 0 12569 char str[256]; 12570 char path_str[64]; 12571 struct sbuf sb; 12572#endif 12573 12574 /* 12575 * In this case, we had to malloc the memory locally. Free it. 12576 */ 12577 if ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0) { 12578 int i; 12579 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12580 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12581 } 12582 12583#if 0 12584 scsi_path_string(io, path_str, sizeof(path_str)); 12585 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 12586 sbuf_cat(&sb, path_str); 12587 scsi_command_string(&io->scsiio, NULL, &sb); 12588 sbuf_printf(&sb, "\n"); 12589 sbuf_cat(&sb, path_str); 12590 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 12591 io->scsiio.tag_num, io->scsiio.tag_type); 12592 sbuf_cat(&sb, path_str); 12593 sbuf_printf(&sb, "%s: flags %#x, status %#x\n", __func__, 12594 io->io_hdr.flags, io->io_hdr.status); 12595 sbuf_finish(&sb); 12596 printk("%s", sbuf_data(&sb)); 12597#endif 12598 12599 12600 /* 12601 * The read is done, now we need to send status (good or bad) back 12602 * to the other side. 12603 */ 12604 ctl_send_datamove_done(io, /*have_lock*/ 0); 12605 12606 return (0); 12607} 12608 12609static void 12610ctl_datamove_remote_read_cb(struct ctl_ha_dt_req *rq) 12611{ 12612 union ctl_io *io; 12613 void (*fe_datamove)(union ctl_io *io); 12614 12615 io = rq->context; 12616 12617 if (rq->ret != CTL_HA_STATUS_SUCCESS) { 12618 printf("%s: ISC DMA read failed with error %d", __func__, 12619 rq->ret); 12620 ctl_set_internal_failure(&io->scsiio, 12621 /*sks_valid*/ 1, 12622 /*retry_count*/ rq->ret); 12623 } 12624 12625 ctl_dt_req_free(rq); 12626 12627 /* Switch the pointer over so the FETD knows what to do */ 12628 io->scsiio.kern_data_ptr = (uint8_t *)io->io_hdr.local_sglist; 12629 12630 /* 12631 * Use a custom move done callback, since we need to send completion 12632 * back to the other controller, not to the backend on this side. 12633 */ 12634 io->scsiio.be_move_done = ctl_datamove_remote_dm_read_cb; 12635 12636 /* XXX KDM add checks like the ones in ctl_datamove? */ 12637 12638 fe_datamove = control_softc->ctl_ports[ctl_port_idx(io->io_hdr.nexus.targ_port)]->fe_datamove; 12639 12640 fe_datamove(io); 12641} 12642 12643static int 12644ctl_datamove_remote_sgl_setup(union ctl_io *io) 12645{ 12646 struct ctl_sg_entry *local_sglist, *remote_sglist; 12647 struct ctl_sg_entry *local_dma_sglist, *remote_dma_sglist; 12648 struct ctl_softc *softc; 12649 int retval; 12650 int i; 12651 12652 retval = 0; 12653 softc = control_softc; 12654 12655 local_sglist = io->io_hdr.local_sglist; 12656 local_dma_sglist = io->io_hdr.local_dma_sglist; 12657 remote_sglist = io->io_hdr.remote_sglist; 12658 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12659 12660 if (io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) { 12661 for (i = 0; i < io->scsiio.kern_sg_entries; i++) { 12662 local_sglist[i].len = remote_sglist[i].len; 12663 12664 /* 12665 * XXX Detect the situation where the RS-level I/O 12666 * redirector on the other side has already read the 12667 * data off of the AOR RS on this side, and 12668 * transferred it to remote (mirror) memory on the 12669 * other side. Since we already have the data in 12670 * memory here, we just need to use it. 12671 * 12672 * XXX KDM this can probably be removed once we 12673 * get the cache device code in and take the 12674 * current AOR implementation out. 12675 */ 12676#ifdef NEEDTOPORT 12677 if ((remote_sglist[i].addr >= 12678 (void *)vtophys(softc->mirr->addr)) 12679 && (remote_sglist[i].addr < 12680 ((void *)vtophys(softc->mirr->addr) + 12681 CacheMirrorOffset))) { 12682 local_sglist[i].addr = remote_sglist[i].addr - 12683 CacheMirrorOffset; 12684 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 12685 CTL_FLAG_DATA_IN) 12686 io->io_hdr.flags |= CTL_FLAG_REDIR_DONE; 12687 } else { 12688 local_sglist[i].addr = remote_sglist[i].addr + 12689 CacheMirrorOffset; 12690 } 12691#endif 12692#if 0 12693 printf("%s: local %p, remote %p, len %d\n", 12694 __func__, local_sglist[i].addr, 12695 remote_sglist[i].addr, local_sglist[i].len); 12696#endif 12697 } 12698 } else { 12699 uint32_t len_to_go; 12700 12701 /* 12702 * In this case, we don't have automatically allocated 12703 * memory for this I/O on this controller. This typically 12704 * happens with internal CTL I/O -- e.g. inquiry, mode 12705 * sense, etc. Anything coming from RAIDCore will have 12706 * a mirror area available. 12707 */ 12708 len_to_go = io->scsiio.kern_data_len; 12709 12710 /* 12711 * Clear the no datasync flag, we have to use malloced 12712 * buffers. 12713 */ 12714 io->io_hdr.flags &= ~CTL_FLAG_NO_DATASYNC; 12715 12716 /* 12717 * The difficult thing here is that the size of the various 12718 * S/G segments may be different than the size from the 12719 * remote controller. That'll make it harder when DMAing 12720 * the data back to the other side. 12721 */ 12722 for (i = 0; (i < sizeof(io->io_hdr.remote_sglist) / 12723 sizeof(io->io_hdr.remote_sglist[0])) && 12724 (len_to_go > 0); i++) { 12725 local_sglist[i].len = ctl_min(len_to_go, 131072); 12726 CTL_SIZE_8B(local_dma_sglist[i].len, 12727 local_sglist[i].len); 12728 local_sglist[i].addr = 12729 malloc(local_dma_sglist[i].len, M_CTL,M_WAITOK); 12730 12731 local_dma_sglist[i].addr = local_sglist[i].addr; 12732 12733 if (local_sglist[i].addr == NULL) { 12734 int j; 12735 12736 printf("malloc failed for %zd bytes!", 12737 local_dma_sglist[i].len); 12738 for (j = 0; j < i; j++) { 12739 free(local_sglist[j].addr, M_CTL); 12740 } 12741 ctl_set_internal_failure(&io->scsiio, 12742 /*sks_valid*/ 1, 12743 /*retry_count*/ 4857); 12744 retval = 1; 12745 goto bailout_error; 12746 12747 } 12748 /* XXX KDM do we need a sync here? */ 12749 12750 len_to_go -= local_sglist[i].len; 12751 } 12752 /* 12753 * Reset the number of S/G entries accordingly. The 12754 * original number of S/G entries is available in 12755 * rem_sg_entries. 12756 */ 12757 io->scsiio.kern_sg_entries = i; 12758 12759#if 0 12760 printf("%s: kern_sg_entries = %d\n", __func__, 12761 io->scsiio.kern_sg_entries); 12762 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12763 printf("%s: sg[%d] = %p, %d (DMA: %d)\n", __func__, i, 12764 local_sglist[i].addr, local_sglist[i].len, 12765 local_dma_sglist[i].len); 12766#endif 12767 } 12768 12769 12770 return (retval); 12771 12772bailout_error: 12773 12774 ctl_send_datamove_done(io, /*have_lock*/ 0); 12775 12776 return (retval); 12777} 12778 12779static int 12780ctl_datamove_remote_xfer(union ctl_io *io, unsigned command, 12781 ctl_ha_dt_cb callback) 12782{ 12783 struct ctl_ha_dt_req *rq; 12784 struct ctl_sg_entry *remote_sglist, *local_sglist; 12785 struct ctl_sg_entry *remote_dma_sglist, *local_dma_sglist; 12786 uint32_t local_used, remote_used, total_used; 12787 int retval; 12788 int i, j; 12789 12790 retval = 0; 12791 12792 rq = ctl_dt_req_alloc(); 12793 12794 /* 12795 * If we failed to allocate the request, and if the DMA didn't fail 12796 * anyway, set busy status. This is just a resource allocation 12797 * failure. 12798 */ 12799 if ((rq == NULL) 12800 && ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) 12801 ctl_set_busy(&io->scsiio); 12802 12803 if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE) { 12804 12805 if (rq != NULL) 12806 ctl_dt_req_free(rq); 12807 12808 /* 12809 * The data move failed. We need to return status back 12810 * to the other controller. No point in trying to DMA 12811 * data to the remote controller. 12812 */ 12813 12814 ctl_send_datamove_done(io, /*have_lock*/ 0); 12815 12816 retval = 1; 12817 12818 goto bailout; 12819 } 12820 12821 local_sglist = io->io_hdr.local_sglist; 12822 local_dma_sglist = io->io_hdr.local_dma_sglist; 12823 remote_sglist = io->io_hdr.remote_sglist; 12824 remote_dma_sglist = io->io_hdr.remote_dma_sglist; 12825 local_used = 0; 12826 remote_used = 0; 12827 total_used = 0; 12828 12829 if (io->io_hdr.flags & CTL_FLAG_REDIR_DONE) { 12830 rq->ret = CTL_HA_STATUS_SUCCESS; 12831 rq->context = io; 12832 callback(rq); 12833 goto bailout; 12834 } 12835 12836 /* 12837 * Pull/push the data over the wire from/to the other controller. 12838 * This takes into account the possibility that the local and 12839 * remote sglists may not be identical in terms of the size of 12840 * the elements and the number of elements. 12841 * 12842 * One fundamental assumption here is that the length allocated for 12843 * both the local and remote sglists is identical. Otherwise, we've 12844 * essentially got a coding error of some sort. 12845 */ 12846 for (i = 0, j = 0; total_used < io->scsiio.kern_data_len; ) { 12847 int isc_ret; 12848 uint32_t cur_len, dma_length; 12849 uint8_t *tmp_ptr; 12850 12851 rq->id = CTL_HA_DATA_CTL; 12852 rq->command = command; 12853 rq->context = io; 12854 12855 /* 12856 * Both pointers should be aligned. But it is possible 12857 * that the allocation length is not. They should both 12858 * also have enough slack left over at the end, though, 12859 * to round up to the next 8 byte boundary. 12860 */ 12861 cur_len = ctl_min(local_sglist[i].len - local_used, 12862 remote_sglist[j].len - remote_used); 12863 12864 /* 12865 * In this case, we have a size issue and need to decrease 12866 * the size, except in the case where we actually have less 12867 * than 8 bytes left. In that case, we need to increase 12868 * the DMA length to get the last bit. 12869 */ 12870 if ((cur_len & 0x7) != 0) { 12871 if (cur_len > 0x7) { 12872 cur_len = cur_len - (cur_len & 0x7); 12873 dma_length = cur_len; 12874 } else { 12875 CTL_SIZE_8B(dma_length, cur_len); 12876 } 12877 12878 } else 12879 dma_length = cur_len; 12880 12881 /* 12882 * If we had to allocate memory for this I/O, instead of using 12883 * the non-cached mirror memory, we'll need to flush the cache 12884 * before trying to DMA to the other controller. 12885 * 12886 * We could end up doing this multiple times for the same 12887 * segment if we have a larger local segment than remote 12888 * segment. That shouldn't be an issue. 12889 */ 12890 if ((io->io_hdr.flags & CTL_FLAG_NO_DATASYNC) == 0) { 12891 /* 12892 * XXX KDM use bus_dmamap_sync() here. 12893 */ 12894 } 12895 12896 rq->size = dma_length; 12897 12898 tmp_ptr = (uint8_t *)local_sglist[i].addr; 12899 tmp_ptr += local_used; 12900 12901 /* Use physical addresses when talking to ISC hardware */ 12902 if ((io->io_hdr.flags & CTL_FLAG_BUS_ADDR) == 0) { 12903 /* XXX KDM use busdma */ 12904#if 0 12905 rq->local = vtophys(tmp_ptr); 12906#endif 12907 } else 12908 rq->local = tmp_ptr; 12909 12910 tmp_ptr = (uint8_t *)remote_sglist[j].addr; 12911 tmp_ptr += remote_used; 12912 rq->remote = tmp_ptr; 12913 12914 rq->callback = NULL; 12915 12916 local_used += cur_len; 12917 if (local_used >= local_sglist[i].len) { 12918 i++; 12919 local_used = 0; 12920 } 12921 12922 remote_used += cur_len; 12923 if (remote_used >= remote_sglist[j].len) { 12924 j++; 12925 remote_used = 0; 12926 } 12927 total_used += cur_len; 12928 12929 if (total_used >= io->scsiio.kern_data_len) 12930 rq->callback = callback; 12931 12932 if ((rq->size & 0x7) != 0) { 12933 printf("%s: warning: size %d is not on 8b boundary\n", 12934 __func__, rq->size); 12935 } 12936 if (((uintptr_t)rq->local & 0x7) != 0) { 12937 printf("%s: warning: local %p not on 8b boundary\n", 12938 __func__, rq->local); 12939 } 12940 if (((uintptr_t)rq->remote & 0x7) != 0) { 12941 printf("%s: warning: remote %p not on 8b boundary\n", 12942 __func__, rq->local); 12943 } 12944#if 0 12945 printf("%s: %s: local %#x remote %#x size %d\n", __func__, 12946 (command == CTL_HA_DT_CMD_WRITE) ? "WRITE" : "READ", 12947 rq->local, rq->remote, rq->size); 12948#endif 12949 12950 isc_ret = ctl_dt_single(rq); 12951 if (isc_ret == CTL_HA_STATUS_WAIT) 12952 continue; 12953 12954 if (isc_ret == CTL_HA_STATUS_DISCONNECT) { 12955 rq->ret = CTL_HA_STATUS_SUCCESS; 12956 } else { 12957 rq->ret = isc_ret; 12958 } 12959 callback(rq); 12960 goto bailout; 12961 } 12962 12963bailout: 12964 return (retval); 12965 12966} 12967 12968static void 12969ctl_datamove_remote_read(union ctl_io *io) 12970{ 12971 int retval; 12972 int i; 12973 12974 /* 12975 * This will send an error to the other controller in the case of a 12976 * failure. 12977 */ 12978 retval = ctl_datamove_remote_sgl_setup(io); 12979 if (retval != 0) 12980 return; 12981 12982 retval = ctl_datamove_remote_xfer(io, CTL_HA_DT_CMD_READ, 12983 ctl_datamove_remote_read_cb); 12984 if ((retval != 0) 12985 && ((io->io_hdr.flags & CTL_FLAG_AUTO_MIRROR) == 0)) { 12986 /* 12987 * Make sure we free memory if there was an error.. The 12988 * ctl_datamove_remote_xfer() function will send the 12989 * datamove done message, or call the callback with an 12990 * error if there is a problem. 12991 */ 12992 for (i = 0; i < io->scsiio.kern_sg_entries; i++) 12993 free(io->io_hdr.local_sglist[i].addr, M_CTL); 12994 } 12995 12996 return; 12997} 12998 12999/* 13000 * Process a datamove request from the other controller. This is used for 13001 * XFER mode only, not SER_ONLY mode. For writes, we DMA into local memory 13002 * first. Once that is complete, the data gets DMAed into the remote 13003 * controller's memory. For reads, we DMA from the remote controller's 13004 * memory into our memory first, and then move it out to the FETD. 13005 */ 13006static void 13007ctl_datamove_remote(union ctl_io *io) 13008{ 13009 struct ctl_softc *softc; 13010 13011 softc = control_softc; 13012 13013 mtx_assert(&softc->ctl_lock, MA_NOTOWNED); 13014 13015 /* 13016 * Note that we look for an aborted I/O here, but don't do some of 13017 * the other checks that ctl_datamove() normally does. We don't 13018 * need to run the task queue, because this I/O is on the ISC 13019 * queue, which is executed by the work thread after the task queue. 13020 * We don't need to run the datamove delay code, since that should 13021 * have been done if need be on the other controller. 13022 */ 13023 if (io->io_hdr.flags & CTL_FLAG_ABORT) { 13024 13025 printf("%s: tag 0x%04x on (%d:%d:%d:%d) aborted\n", __func__, 13026 io->scsiio.tag_num, io->io_hdr.nexus.initid.id, 13027 io->io_hdr.nexus.targ_port, 13028 io->io_hdr.nexus.targ_target.id, 13029 io->io_hdr.nexus.targ_lun); 13030 io->io_hdr.status = CTL_CMD_ABORTED; 13031 io->io_hdr.port_status = 31338; 13032 13033 ctl_send_datamove_done(io, /*have_lock*/ 0); 13034 13035 return; 13036 } 13037 13038 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_OUT) { 13039 ctl_datamove_remote_write(io); 13040 } else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN){ 13041 ctl_datamove_remote_read(io); 13042 } else { 13043 union ctl_ha_msg msg; 13044 struct scsi_sense_data *sense; 13045 uint8_t sks[3]; 13046 int retry_count; 13047 13048 memset(&msg, 0, sizeof(msg)); 13049 13050 msg.hdr.msg_type = CTL_MSG_BAD_JUJU; 13051 msg.hdr.status = CTL_SCSI_ERROR; 13052 msg.scsi.scsi_status = SCSI_STATUS_CHECK_COND; 13053 13054 retry_count = 4243; 13055 13056 sense = &msg.scsi.sense_data; 13057 sks[0] = SSD_SCS_VALID; 13058 sks[1] = (retry_count >> 8) & 0xff; 13059 sks[2] = retry_count & 0xff; 13060 13061 /* "Internal target failure" */ 13062 scsi_set_sense_data(sense, 13063 /*sense_format*/ SSD_TYPE_NONE, 13064 /*current_error*/ 1, 13065 /*sense_key*/ SSD_KEY_HARDWARE_ERROR, 13066 /*asc*/ 0x44, 13067 /*ascq*/ 0x00, 13068 /*type*/ SSD_ELEM_SKS, 13069 /*size*/ sizeof(sks), 13070 /*data*/ sks, 13071 SSD_ELEM_NONE); 13072 13073 io->io_hdr.flags &= ~CTL_FLAG_IO_ACTIVE; 13074 if (io->io_hdr.flags & CTL_FLAG_FAILOVER) { 13075 ctl_failover_io(io, /*have_lock*/ 1); 13076 return; 13077 } 13078 13079 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, sizeof(msg), 0) > 13080 CTL_HA_STATUS_SUCCESS) { 13081 /* XXX KDM what to do if this fails? */ 13082 } 13083 return; 13084 } 13085 13086} 13087 13088static int 13089ctl_process_done(union ctl_io *io) 13090{ 13091 struct ctl_lun *lun; 13092 struct ctl_softc *ctl_softc; 13093 void (*fe_done)(union ctl_io *io); 13094 uint32_t targ_port = ctl_port_idx(io->io_hdr.nexus.targ_port); 13095 13096 CTL_DEBUG_PRINT(("ctl_process_done\n")); 13097 13098 fe_done = 13099 control_softc->ctl_ports[targ_port]->fe_done; 13100 13101#ifdef CTL_TIME_IO 13102 if ((time_uptime - io->io_hdr.start_time) > ctl_time_io_secs) { 13103 char str[256]; 13104 char path_str[64]; 13105 struct sbuf sb; 13106 13107 ctl_scsi_path_string(io, path_str, sizeof(path_str)); 13108 sbuf_new(&sb, str, sizeof(str), SBUF_FIXEDLEN); 13109 13110 sbuf_cat(&sb, path_str); 13111 switch (io->io_hdr.io_type) { 13112 case CTL_IO_SCSI: 13113 ctl_scsi_command_string(&io->scsiio, NULL, &sb); 13114 sbuf_printf(&sb, "\n"); 13115 sbuf_cat(&sb, path_str); 13116 sbuf_printf(&sb, "Tag: 0x%04x, type %d\n", 13117 io->scsiio.tag_num, io->scsiio.tag_type); 13118 break; 13119 case CTL_IO_TASK: 13120 sbuf_printf(&sb, "Task I/O type: %d, Tag: 0x%04x, " 13121 "Tag Type: %d\n", io->taskio.task_action, 13122 io->taskio.tag_num, io->taskio.tag_type); 13123 break; 13124 default: 13125 printf("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 13126 panic("Invalid CTL I/O type %d\n", io->io_hdr.io_type); 13127 break; 13128 } 13129 sbuf_cat(&sb, path_str); 13130 sbuf_printf(&sb, "ctl_process_done: %jd seconds\n", 13131 (intmax_t)time_uptime - io->io_hdr.start_time); 13132 sbuf_finish(&sb); 13133 printf("%s", sbuf_data(&sb)); 13134 } 13135#endif /* CTL_TIME_IO */ 13136 13137 switch (io->io_hdr.io_type) { 13138 case CTL_IO_SCSI: 13139 break; 13140 case CTL_IO_TASK: 13141 if (bootverbose || verbose > 0) 13142 ctl_io_error_print(io, NULL); 13143 if (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC) 13144 ctl_free_io(io); 13145 else 13146 fe_done(io); 13147 return (CTL_RETVAL_COMPLETE); 13148 break; 13149 default: 13150 printf("ctl_process_done: invalid io type %d\n", 13151 io->io_hdr.io_type); 13152 panic("ctl_process_done: invalid io type %d\n", 13153 io->io_hdr.io_type); 13154 break; /* NOTREACHED */ 13155 } 13156 13157 lun = (struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13158 if (lun == NULL) { 13159 CTL_DEBUG_PRINT(("NULL LUN for lun %d\n", 13160 io->io_hdr.nexus.targ_mapped_lun)); 13161 fe_done(io); 13162 goto bailout; 13163 } 13164 ctl_softc = lun->ctl_softc; 13165 13166 mtx_lock(&lun->lun_lock); 13167 13168 /* 13169 * Check to see if we have any errors to inject here. We only 13170 * inject errors for commands that don't already have errors set. 13171 */ 13172 if ((STAILQ_FIRST(&lun->error_list) != NULL) 13173 && ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) 13174 ctl_inject_error(lun, io); 13175 13176 /* 13177 * XXX KDM how do we treat commands that aren't completed 13178 * successfully? 13179 * 13180 * XXX KDM should we also track I/O latency? 13181 */ 13182 if ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS && 13183 io->io_hdr.io_type == CTL_IO_SCSI) { 13184#ifdef CTL_TIME_IO 13185 struct bintime cur_bt; 13186#endif 13187 int type; 13188 13189 if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 13190 CTL_FLAG_DATA_IN) 13191 type = CTL_STATS_READ; 13192 else if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == 13193 CTL_FLAG_DATA_OUT) 13194 type = CTL_STATS_WRITE; 13195 else 13196 type = CTL_STATS_NO_IO; 13197 13198 lun->stats.ports[targ_port].bytes[type] += 13199 io->scsiio.kern_total_len; 13200 lun->stats.ports[targ_port].operations[type]++; 13201#ifdef CTL_TIME_IO 13202 bintime_add(&lun->stats.ports[targ_port].dma_time[type], 13203 &io->io_hdr.dma_bt); 13204 lun->stats.ports[targ_port].num_dmas[type] += 13205 io->io_hdr.num_dmas; 13206 getbintime(&cur_bt); 13207 bintime_sub(&cur_bt, &io->io_hdr.start_bt); 13208 bintime_add(&lun->stats.ports[targ_port].time[type], &cur_bt); 13209#endif 13210 } 13211 13212 /* 13213 * Remove this from the OOA queue. 13214 */ 13215 TAILQ_REMOVE(&lun->ooa_queue, &io->io_hdr, ooa_links); 13216 13217 /* 13218 * Run through the blocked queue on this LUN and see if anything 13219 * has become unblocked, now that this transaction is done. 13220 */ 13221 ctl_check_blocked(lun); 13222 13223 /* 13224 * If the LUN has been invalidated, free it if there is nothing 13225 * left on its OOA queue. 13226 */ 13227 if ((lun->flags & CTL_LUN_INVALID) 13228 && TAILQ_EMPTY(&lun->ooa_queue)) { 13229 mtx_unlock(&lun->lun_lock); 13230 mtx_lock(&ctl_softc->ctl_lock); 13231 ctl_free_lun(lun); 13232 mtx_unlock(&ctl_softc->ctl_lock); 13233 } else 13234 mtx_unlock(&lun->lun_lock); 13235 13236 /* 13237 * If this command has been aborted, make sure we set the status 13238 * properly. The FETD is responsible for freeing the I/O and doing 13239 * whatever it needs to do to clean up its state. 13240 */ 13241 if (io->io_hdr.flags & CTL_FLAG_ABORT) 13242 io->io_hdr.status = CTL_CMD_ABORTED; 13243 13244 /* 13245 * We print out status for every task management command. For SCSI 13246 * commands, we filter out any unit attention errors; they happen 13247 * on every boot, and would clutter up the log. Note: task 13248 * management commands aren't printed here, they are printed above, 13249 * since they should never even make it down here. 13250 */ 13251 switch (io->io_hdr.io_type) { 13252 case CTL_IO_SCSI: { 13253 int error_code, sense_key, asc, ascq; 13254 13255 sense_key = 0; 13256 13257 if (((io->io_hdr.status & CTL_STATUS_MASK) == CTL_SCSI_ERROR) 13258 && (io->scsiio.scsi_status == SCSI_STATUS_CHECK_COND)) { 13259 /* 13260 * Since this is just for printing, no need to 13261 * show errors here. 13262 */ 13263 scsi_extract_sense_len(&io->scsiio.sense_data, 13264 io->scsiio.sense_len, 13265 &error_code, 13266 &sense_key, 13267 &asc, 13268 &ascq, 13269 /*show_errors*/ 0); 13270 } 13271 13272 if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS) 13273 && (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SCSI_ERROR) 13274 || (io->scsiio.scsi_status != SCSI_STATUS_CHECK_COND) 13275 || (sense_key != SSD_KEY_UNIT_ATTENTION))) { 13276 13277 if ((time_uptime - ctl_softc->last_print_jiffies) <= 0){ 13278 ctl_softc->skipped_prints++; 13279 } else { 13280 uint32_t skipped_prints; 13281 13282 skipped_prints = ctl_softc->skipped_prints; 13283 13284 ctl_softc->skipped_prints = 0; 13285 ctl_softc->last_print_jiffies = time_uptime; 13286 13287 if (skipped_prints > 0) { 13288#ifdef NEEDTOPORT 13289 csevent_log(CSC_CTL | CSC_SHELF_SW | 13290 CTL_ERROR_REPORT, 13291 csevent_LogType_Trace, 13292 csevent_Severity_Information, 13293 csevent_AlertLevel_Green, 13294 csevent_FRU_Firmware, 13295 csevent_FRU_Unknown, 13296 "High CTL error volume, %d prints " 13297 "skipped", skipped_prints); 13298#endif 13299 } 13300 if (bootverbose || verbose > 0) 13301 ctl_io_error_print(io, NULL); 13302 } 13303 } 13304 break; 13305 } 13306 case CTL_IO_TASK: 13307 if (bootverbose || verbose > 0) 13308 ctl_io_error_print(io, NULL); 13309 break; 13310 default: 13311 break; 13312 } 13313 13314 /* 13315 * Tell the FETD or the other shelf controller we're done with this 13316 * command. Note that only SCSI commands get to this point. Task 13317 * management commands are completed above. 13318 * 13319 * We only send status to the other controller if we're in XFER 13320 * mode. In SER_ONLY mode, the I/O is done on the controller that 13321 * received the I/O (from CTL's perspective), and so the status is 13322 * generated there. 13323 * 13324 * XXX KDM if we hold the lock here, we could cause a deadlock 13325 * if the frontend comes back in in this context to queue 13326 * something. 13327 */ 13328 if ((ctl_softc->ha_mode == CTL_HA_MODE_XFER) 13329 && (io->io_hdr.flags & CTL_FLAG_FROM_OTHER_SC)) { 13330 union ctl_ha_msg msg; 13331 13332 memset(&msg, 0, sizeof(msg)); 13333 msg.hdr.msg_type = CTL_MSG_FINISH_IO; 13334 msg.hdr.original_sc = io->io_hdr.original_sc; 13335 msg.hdr.nexus = io->io_hdr.nexus; 13336 msg.hdr.status = io->io_hdr.status; 13337 msg.scsi.scsi_status = io->scsiio.scsi_status; 13338 msg.scsi.tag_num = io->scsiio.tag_num; 13339 msg.scsi.tag_type = io->scsiio.tag_type; 13340 msg.scsi.sense_len = io->scsiio.sense_len; 13341 msg.scsi.sense_residual = io->scsiio.sense_residual; 13342 msg.scsi.residual = io->scsiio.residual; 13343 memcpy(&msg.scsi.sense_data, &io->scsiio.sense_data, 13344 sizeof(io->scsiio.sense_data)); 13345 /* 13346 * We copy this whether or not this is an I/O-related 13347 * command. Otherwise, we'd have to go and check to see 13348 * whether it's a read/write command, and it really isn't 13349 * worth it. 13350 */ 13351 memcpy(&msg.scsi.lbalen, 13352 &io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN].bytes, 13353 sizeof(msg.scsi.lbalen)); 13354 13355 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg, 13356 sizeof(msg), 0) > CTL_HA_STATUS_SUCCESS) { 13357 /* XXX do something here */ 13358 } 13359 13360 ctl_free_io(io); 13361 } else 13362 fe_done(io); 13363 13364bailout: 13365 13366 return (CTL_RETVAL_COMPLETE); 13367} 13368 13369/* 13370 * Front end should call this if it doesn't do autosense. When the request 13371 * sense comes back in from the initiator, we'll dequeue this and send it. 13372 */ 13373int 13374ctl_queue_sense(union ctl_io *io) 13375{ 13376 struct ctl_lun *lun; 13377 struct ctl_softc *ctl_softc; 13378 uint32_t initidx, targ_lun; 13379 13380 ctl_softc = control_softc; 13381 13382 CTL_DEBUG_PRINT(("ctl_queue_sense\n")); 13383 13384 /* 13385 * LUN lookup will likely move to the ctl_work_thread() once we 13386 * have our new queueing infrastructure (that doesn't put things on 13387 * a per-LUN queue initially). That is so that we can handle 13388 * things like an INQUIRY to a LUN that we don't have enabled. We 13389 * can't deal with that right now. 13390 */ 13391 mtx_lock(&ctl_softc->ctl_lock); 13392 13393 /* 13394 * If we don't have a LUN for this, just toss the sense 13395 * information. 13396 */ 13397 targ_lun = io->io_hdr.nexus.targ_lun; 13398 targ_lun = ctl_map_lun(io->io_hdr.nexus.targ_port, targ_lun); 13399 if ((targ_lun < CTL_MAX_LUNS) 13400 && (ctl_softc->ctl_luns[targ_lun] != NULL)) 13401 lun = ctl_softc->ctl_luns[targ_lun]; 13402 else 13403 goto bailout; 13404 13405 initidx = ctl_get_initindex(&io->io_hdr.nexus); 13406 13407 mtx_lock(&lun->lun_lock); 13408 /* 13409 * Already have CA set for this LUN...toss the sense information. 13410 */ 13411 if (ctl_is_set(lun->have_ca, initidx)) { 13412 mtx_unlock(&lun->lun_lock); 13413 goto bailout; 13414 } 13415 13416 memcpy(&lun->pending_sense[initidx].sense, &io->scsiio.sense_data, 13417 ctl_min(sizeof(lun->pending_sense[initidx].sense), 13418 sizeof(io->scsiio.sense_data))); 13419 ctl_set_mask(lun->have_ca, initidx); 13420 mtx_unlock(&lun->lun_lock); 13421 13422bailout: 13423 mtx_unlock(&ctl_softc->ctl_lock); 13424 13425 ctl_free_io(io); 13426 13427 return (CTL_RETVAL_COMPLETE); 13428} 13429 13430/* 13431 * Primary command inlet from frontend ports. All SCSI and task I/O 13432 * requests must go through this function. 13433 */ 13434int 13435ctl_queue(union ctl_io *io) 13436{ 13437 struct ctl_softc *ctl_softc; 13438 13439 CTL_DEBUG_PRINT(("ctl_queue cdb[0]=%02X\n", io->scsiio.cdb[0])); 13440 13441 ctl_softc = control_softc; 13442 13443#ifdef CTL_TIME_IO 13444 io->io_hdr.start_time = time_uptime; 13445 getbintime(&io->io_hdr.start_bt); 13446#endif /* CTL_TIME_IO */ 13447 13448 /* Map FE-specific LUN ID into global one. */ 13449 io->io_hdr.nexus.targ_mapped_lun = 13450 ctl_map_lun(io->io_hdr.nexus.targ_port, io->io_hdr.nexus.targ_lun); 13451 13452 switch (io->io_hdr.io_type) { 13453 case CTL_IO_SCSI: 13454 case CTL_IO_TASK: 13455 ctl_enqueue_incoming(io); 13456 break; 13457 default: 13458 printf("ctl_queue: unknown I/O type %d\n", io->io_hdr.io_type); 13459 return (EINVAL); 13460 } 13461 13462 return (CTL_RETVAL_COMPLETE); 13463} 13464 13465#ifdef CTL_IO_DELAY 13466static void 13467ctl_done_timer_wakeup(void *arg) 13468{ 13469 union ctl_io *io; 13470 13471 io = (union ctl_io *)arg; 13472 ctl_done(io); 13473} 13474#endif /* CTL_IO_DELAY */ 13475 13476void 13477ctl_done(union ctl_io *io) 13478{ 13479 struct ctl_softc *ctl_softc; 13480 13481 ctl_softc = control_softc; 13482 13483 /* 13484 * Enable this to catch duplicate completion issues. 13485 */ 13486#if 0 13487 if (io->io_hdr.flags & CTL_FLAG_ALREADY_DONE) { 13488 printf("%s: type %d msg %d cdb %x iptl: " 13489 "%d:%d:%d:%d tag 0x%04x " 13490 "flag %#x status %x\n", 13491 __func__, 13492 io->io_hdr.io_type, 13493 io->io_hdr.msg_type, 13494 io->scsiio.cdb[0], 13495 io->io_hdr.nexus.initid.id, 13496 io->io_hdr.nexus.targ_port, 13497 io->io_hdr.nexus.targ_target.id, 13498 io->io_hdr.nexus.targ_lun, 13499 (io->io_hdr.io_type == 13500 CTL_IO_TASK) ? 13501 io->taskio.tag_num : 13502 io->scsiio.tag_num, 13503 io->io_hdr.flags, 13504 io->io_hdr.status); 13505 } else 13506 io->io_hdr.flags |= CTL_FLAG_ALREADY_DONE; 13507#endif 13508 13509 /* 13510 * This is an internal copy of an I/O, and should not go through 13511 * the normal done processing logic. 13512 */ 13513 if (io->io_hdr.flags & CTL_FLAG_INT_COPY) 13514 return; 13515 13516 /* 13517 * We need to send a msg to the serializing shelf to finish the IO 13518 * as well. We don't send a finish message to the other shelf if 13519 * this is a task management command. Task management commands 13520 * aren't serialized in the OOA queue, but rather just executed on 13521 * both shelf controllers for commands that originated on that 13522 * controller. 13523 */ 13524 if ((io->io_hdr.flags & CTL_FLAG_SENT_2OTHER_SC) 13525 && (io->io_hdr.io_type != CTL_IO_TASK)) { 13526 union ctl_ha_msg msg_io; 13527 13528 msg_io.hdr.msg_type = CTL_MSG_FINISH_IO; 13529 msg_io.hdr.serializing_sc = io->io_hdr.serializing_sc; 13530 if (ctl_ha_msg_send(CTL_HA_CHAN_CTL, &msg_io, 13531 sizeof(msg_io), 0 ) != CTL_HA_STATUS_SUCCESS) { 13532 } 13533 /* continue on to finish IO */ 13534 } 13535#ifdef CTL_IO_DELAY 13536 if (io->io_hdr.flags & CTL_FLAG_DELAY_DONE) { 13537 struct ctl_lun *lun; 13538 13539 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13540 13541 io->io_hdr.flags &= ~CTL_FLAG_DELAY_DONE; 13542 } else { 13543 struct ctl_lun *lun; 13544 13545 lun =(struct ctl_lun *)io->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13546 13547 if ((lun != NULL) 13548 && (lun->delay_info.done_delay > 0)) { 13549 struct callout *callout; 13550 13551 callout = (struct callout *)&io->io_hdr.timer_bytes; 13552 callout_init(callout, /*mpsafe*/ 1); 13553 io->io_hdr.flags |= CTL_FLAG_DELAY_DONE; 13554 callout_reset(callout, 13555 lun->delay_info.done_delay * hz, 13556 ctl_done_timer_wakeup, io); 13557 if (lun->delay_info.done_type == CTL_DELAY_TYPE_ONESHOT) 13558 lun->delay_info.done_delay = 0; 13559 return; 13560 } 13561 } 13562#endif /* CTL_IO_DELAY */ 13563 13564 ctl_enqueue_done(io); 13565} 13566 13567int 13568ctl_isc(struct ctl_scsiio *ctsio) 13569{ 13570 struct ctl_lun *lun; 13571 int retval; 13572 13573 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 13574 13575 CTL_DEBUG_PRINT(("ctl_isc: command: %02x\n", ctsio->cdb[0])); 13576 13577 CTL_DEBUG_PRINT(("ctl_isc: calling data_submit()\n")); 13578 13579 retval = lun->backend->data_submit((union ctl_io *)ctsio); 13580 13581 return (retval); 13582} 13583 13584 13585static void 13586ctl_work_thread(void *arg) 13587{ 13588 struct ctl_thread *thr = (struct ctl_thread *)arg; 13589 struct ctl_softc *softc = thr->ctl_softc; 13590 union ctl_io *io; 13591 int retval; 13592 13593 CTL_DEBUG_PRINT(("ctl_work_thread starting\n")); 13594 13595 for (;;) { 13596 retval = 0; 13597 13598 /* 13599 * We handle the queues in this order: 13600 * - ISC 13601 * - done queue (to free up resources, unblock other commands) 13602 * - RtR queue 13603 * - incoming queue 13604 * 13605 * If those queues are empty, we break out of the loop and 13606 * go to sleep. 13607 */ 13608 mtx_lock(&thr->queue_lock); 13609 io = (union ctl_io *)STAILQ_FIRST(&thr->isc_queue); 13610 if (io != NULL) { 13611 STAILQ_REMOVE_HEAD(&thr->isc_queue, links); 13612 mtx_unlock(&thr->queue_lock); 13613 ctl_handle_isc(io); 13614 continue; 13615 } 13616 io = (union ctl_io *)STAILQ_FIRST(&thr->done_queue); 13617 if (io != NULL) { 13618 STAILQ_REMOVE_HEAD(&thr->done_queue, links); 13619 /* clear any blocked commands, call fe_done */ 13620 mtx_unlock(&thr->queue_lock); 13621 retval = ctl_process_done(io); 13622 continue; 13623 } 13624 io = (union ctl_io *)STAILQ_FIRST(&thr->incoming_queue); 13625 if (io != NULL) { 13626 STAILQ_REMOVE_HEAD(&thr->incoming_queue, links); 13627 mtx_unlock(&thr->queue_lock); 13628 if (io->io_hdr.io_type == CTL_IO_TASK) 13629 ctl_run_task(io); 13630 else 13631 ctl_scsiio_precheck(softc, &io->scsiio); 13632 continue; 13633 } 13634 if (!ctl_pause_rtr) { 13635 io = (union ctl_io *)STAILQ_FIRST(&thr->rtr_queue); 13636 if (io != NULL) { 13637 STAILQ_REMOVE_HEAD(&thr->rtr_queue, links); 13638 mtx_unlock(&thr->queue_lock); 13639 retval = ctl_scsiio(&io->scsiio); 13640 if (retval != CTL_RETVAL_COMPLETE) 13641 CTL_DEBUG_PRINT(("ctl_scsiio failed\n")); 13642 continue; 13643 } 13644 } 13645 13646 /* Sleep until we have something to do. */ 13647 mtx_sleep(thr, &thr->queue_lock, PDROP | PRIBIO, "-", 0); 13648 } 13649} 13650 13651static void 13652ctl_lun_thread(void *arg) 13653{ 13654 struct ctl_softc *softc = (struct ctl_softc *)arg; 13655 struct ctl_be_lun *be_lun; 13656 int retval; 13657 13658 CTL_DEBUG_PRINT(("ctl_lun_thread starting\n")); 13659 13660 for (;;) { 13661 retval = 0; 13662 mtx_lock(&softc->ctl_lock); 13663 be_lun = STAILQ_FIRST(&softc->pending_lun_queue); 13664 if (be_lun != NULL) { 13665 STAILQ_REMOVE_HEAD(&softc->pending_lun_queue, links); 13666 mtx_unlock(&softc->ctl_lock); 13667 ctl_create_lun(be_lun); 13668 continue; 13669 } 13670 13671 /* Sleep until we have something to do. */ 13672 mtx_sleep(&softc->pending_lun_queue, &softc->ctl_lock, 13673 PDROP | PRIBIO, "-", 0); 13674 } 13675} 13676 13677static void 13678ctl_enqueue_incoming(union ctl_io *io) 13679{ 13680 struct ctl_softc *softc = control_softc; 13681 struct ctl_thread *thr; 13682 u_int idx; 13683 13684 idx = (io->io_hdr.nexus.targ_port * 127 + 13685 io->io_hdr.nexus.initid.id) % worker_threads; 13686 thr = &softc->threads[idx]; 13687 mtx_lock(&thr->queue_lock); 13688 STAILQ_INSERT_TAIL(&thr->incoming_queue, &io->io_hdr, links); 13689 mtx_unlock(&thr->queue_lock); 13690 wakeup(thr); 13691} 13692 13693static void 13694ctl_enqueue_rtr(union ctl_io *io) 13695{ 13696 struct ctl_softc *softc = control_softc; 13697 struct ctl_thread *thr; 13698 13699 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13700 mtx_lock(&thr->queue_lock); 13701 STAILQ_INSERT_TAIL(&thr->rtr_queue, &io->io_hdr, links); 13702 mtx_unlock(&thr->queue_lock); 13703 wakeup(thr); 13704} 13705 13706static void 13707ctl_enqueue_done(union ctl_io *io) 13708{ 13709 struct ctl_softc *softc = control_softc; 13710 struct ctl_thread *thr; 13711 13712 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13713 mtx_lock(&thr->queue_lock); 13714 STAILQ_INSERT_TAIL(&thr->done_queue, &io->io_hdr, links); 13715 mtx_unlock(&thr->queue_lock); 13716 wakeup(thr); 13717} 13718 13719static void 13720ctl_enqueue_isc(union ctl_io *io) 13721{ 13722 struct ctl_softc *softc = control_softc; 13723 struct ctl_thread *thr; 13724 13725 thr = &softc->threads[io->io_hdr.nexus.targ_mapped_lun % worker_threads]; 13726 mtx_lock(&thr->queue_lock); 13727 STAILQ_INSERT_TAIL(&thr->isc_queue, &io->io_hdr, links); 13728 mtx_unlock(&thr->queue_lock); 13729 wakeup(thr); 13730} 13731 13732/* Initialization and failover */ 13733 13734void 13735ctl_init_isc_msg(void) 13736{ 13737 printf("CTL: Still calling this thing\n"); 13738} 13739 13740/* 13741 * Init component 13742 * Initializes component into configuration defined by bootMode 13743 * (see hasc-sv.c) 13744 * returns hasc_Status: 13745 * OK 13746 * ERROR - fatal error 13747 */ 13748static ctl_ha_comp_status 13749ctl_isc_init(struct ctl_ha_component *c) 13750{ 13751 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13752 13753 c->status = ret; 13754 return ret; 13755} 13756 13757/* Start component 13758 * Starts component in state requested. If component starts successfully, 13759 * it must set its own state to the requestrd state 13760 * When requested state is HASC_STATE_HA, the component may refine it 13761 * by adding _SLAVE or _MASTER flags. 13762 * Currently allowed state transitions are: 13763 * UNKNOWN->HA - initial startup 13764 * UNKNOWN->SINGLE - initial startup when no parter detected 13765 * HA->SINGLE - failover 13766 * returns ctl_ha_comp_status: 13767 * OK - component successfully started in requested state 13768 * FAILED - could not start the requested state, failover may 13769 * be possible 13770 * ERROR - fatal error detected, no future startup possible 13771 */ 13772static ctl_ha_comp_status 13773ctl_isc_start(struct ctl_ha_component *c, ctl_ha_state state) 13774{ 13775 ctl_ha_comp_status ret = CTL_HA_COMP_STATUS_OK; 13776 13777 printf("%s: go\n", __func__); 13778 13779 // UNKNOWN->HA or UNKNOWN->SINGLE (bootstrap) 13780 if (c->state == CTL_HA_STATE_UNKNOWN ) { 13781 ctl_is_single = 0; 13782 if (ctl_ha_msg_create(CTL_HA_CHAN_CTL, ctl_isc_event_handler) 13783 != CTL_HA_STATUS_SUCCESS) { 13784 printf("ctl_isc_start: ctl_ha_msg_create failed.\n"); 13785 ret = CTL_HA_COMP_STATUS_ERROR; 13786 } 13787 } else if (CTL_HA_STATE_IS_HA(c->state) 13788 && CTL_HA_STATE_IS_SINGLE(state)){ 13789 // HA->SINGLE transition 13790 ctl_failover(); 13791 ctl_is_single = 1; 13792 } else { 13793 printf("ctl_isc_start:Invalid state transition %X->%X\n", 13794 c->state, state); 13795 ret = CTL_HA_COMP_STATUS_ERROR; 13796 } 13797 if (CTL_HA_STATE_IS_SINGLE(state)) 13798 ctl_is_single = 1; 13799 13800 c->state = state; 13801 c->status = ret; 13802 return ret; 13803} 13804 13805/* 13806 * Quiesce component 13807 * The component must clear any error conditions (set status to OK) and 13808 * prepare itself to another Start call 13809 * returns ctl_ha_comp_status: 13810 * OK 13811 * ERROR 13812 */ 13813static ctl_ha_comp_status 13814ctl_isc_quiesce(struct ctl_ha_component *c) 13815{ 13816 int ret = CTL_HA_COMP_STATUS_OK; 13817 13818 ctl_pause_rtr = 1; 13819 c->status = ret; 13820 return ret; 13821} 13822 13823struct ctl_ha_component ctl_ha_component_ctlisc = 13824{ 13825 .name = "CTL ISC", 13826 .state = CTL_HA_STATE_UNKNOWN, 13827 .init = ctl_isc_init, 13828 .start = ctl_isc_start, 13829 .quiesce = ctl_isc_quiesce 13830}; 13831 13832/* 13833 * vim: ts=8 13834 */ 13835