sys/cam/ctl/scsi_ctl.c

   1 /*-
   2  * Copyright (c) 2008, 2009 Silicon Graphics International Corp.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions, and the following disclaimer,
  10  *    without modification.
  11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  12  *    substantially similar to the "NO WARRANTY" disclaimer below
  13  *    ("Disclaimer") and any redistribution must be conditioned upon
  14  *    including a substantially similar Disclaimer requirement for further
  15  *    binary redistribution.
  16  *
  17  * NO WARRANTY
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGES.
  29  *
  30  * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/scsi_ctl.c#4 $
  31  */
  32 /*
  33  * Peripheral driver interface between CAM and CTL (CAM Target Layer).
  34  *
  35  * Author: Ken Merry <ken@FreeBSD.org>
  36  */
  37
  38 #include <sys/cdefs.h>
  39 __FBSDID("$FreeBSD$");
  40
  41 #include <sys/param.h>
  42 #include <sys/queue.h>
  43 #include <sys/systm.h>
  44 #include <sys/kernel.h>
  45 #include <sys/lock.h>
  46 #include <sys/mutex.h>
  47 #include <sys/condvar.h>
  48 #include <sys/malloc.h>
  49 #include <sys/bus.h>
  50 #include <sys/endian.h>
  51 #include <sys/sbuf.h>
  52 #include <sys/sysctl.h>
  53 #include <sys/types.h>
  54 #include <sys/systm.h>
  55 #include <machine/bus.h>
  56
  57 #include <cam/cam.h>
  58 #include <cam/cam_ccb.h>
  59 #include <cam/cam_periph.h>
  60 #include <cam/cam_queue.h>
  61 #include <cam/cam_xpt_periph.h>
  62 #include <cam/cam_debug.h>
  63 #include <cam/cam_sim.h>
  64 #include <cam/cam_xpt.h>
  65
  66 #include <cam/scsi/scsi_all.h>
  67 #include <cam/scsi/scsi_message.h>
  68
  69 #include <cam/ctl/ctl_io.h>
  70 #include <cam/ctl/ctl.h>
  71 #include <cam/ctl/ctl_frontend.h>
  72 #include <cam/ctl/ctl_util.h>
  73 #include <cam/ctl/ctl_error.h>
  74
  75 struct ctlfe_softc {
  76         struct ctl_port port;
  77         path_id_t path_id;
  78         u_int   maxio;
  79         struct cam_sim *sim;
  80         char port_name[DEV_IDLEN];
  81         struct mtx lun_softc_mtx;
  82         STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list;
  83         STAILQ_ENTRY(ctlfe_softc) links;
  84 };
  85
  86 STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list;
  87 struct mtx ctlfe_list_mtx;
  88 static char ctlfe_mtx_desc[] = "ctlfelist";
  89 #ifdef CTLFE_INIT_ENABLE
  90 static int ctlfe_max_targets = 1;
  91 static int ctlfe_num_targets = 0;
  92 #endif
  93
  94 typedef enum {
  95         CTLFE_LUN_NONE          = 0x00,
  96         CTLFE_LUN_WILDCARD      = 0x01
  97 } ctlfe_lun_flags;
  98
  99 struct ctlfe_lun_softc {
 100         struct ctlfe_softc *parent_softc;
 101         struct cam_periph *periph;
 102         ctlfe_lun_flags flags;
 103         uint64_t ccbs_alloced;
 104         uint64_t ccbs_freed;
 105         uint64_t ctios_sent;
 106         uint64_t ctios_returned;
 107         uint64_t atios_sent;
 108         uint64_t atios_returned;
 109         uint64_t inots_sent;
 110         uint64_t inots_returned;
 111         /* bus_dma_tag_t dma_tag; */
 112         TAILQ_HEAD(, ccb_hdr) work_queue;
 113         STAILQ_ENTRY(ctlfe_lun_softc) links;
 114 };
 115
 116 typedef enum {
 117         CTLFE_CMD_NONE          = 0x00,
 118         CTLFE_CMD_PIECEWISE     = 0x01
 119 } ctlfe_cmd_flags;
 120
 121 /*
 122  * The size limit of this structure is CTL_PORT_PRIV_SIZE, from ctl_io.h.
 123  * Currently that is 600 bytes.
 124  */
 125 struct ctlfe_lun_cmd_info {
 126         int cur_transfer_index;
 127         size_t cur_transfer_off;
 128         ctlfe_cmd_flags flags;
 129         /*
 130          * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16
 131          * bytes on amd64.  So with 32 elements, this is 256 bytes on
 132          * i386 and 512 bytes on amd64.
 133          */
 134 #define CTLFE_MAX_SEGS  32
 135         bus_dma_segment_t cam_sglist[CTLFE_MAX_SEGS];
 136 };
 137 CTASSERT(sizeof(struct ctlfe_lun_cmd_info) <= CTL_PORT_PRIV_SIZE);
 138
 139 /*
 140  * When we register the adapter/bus, request that this many ctl_ios be
 141  * allocated.  This should be the maximum supported by the adapter, but we
 142  * currently don't have a way to get that back from the path inquiry.
 143  * XXX KDM add that to the path inquiry.
 144  */
 145 #define CTLFE_REQ_CTL_IO        4096
 146 /*
 147  * Number of Accept Target I/O CCBs to allocate and queue down to the
 148  * adapter per LUN.
 149  * XXX KDM should this be controlled by CTL?
 150  */
 151 #define CTLFE_ATIO_PER_LUN      1024
 152 /*
 153  * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to
 154  * allocate and queue down to the adapter per LUN.
 155  * XXX KDM should this be controlled by CTL?
 156  */
 157 #define CTLFE_IN_PER_LUN        1024
 158
 159 /*
 160  * Timeout (in seconds) on CTIO CCB allocation for doing a DMA or sending
 161  * status to the initiator.  The SIM is expected to have its own timeouts,
 162  * so we're not putting this timeout around the CCB execution time.  The
 163  * SIM should timeout and let us know if it has an issue.
 164  */
 165 #define CTLFE_DMA_TIMEOUT       60
 166
 167 /*
 168  * Turn this on to enable extra debugging prints.
 169  */
 170 #if 0
 171 #define CTLFE_DEBUG
 172 #endif
 173
 174 /*
 175  * Use randomly assigned WWNN/WWPN values.  This is to work around an issue
 176  * in the FreeBSD initiator that makes it unable to rescan the target if
 177  * the target gets rebooted and the WWNN/WWPN stay the same.
 178  */
 179 #if 0
 180 #define RANDOM_WWNN
 181 #endif
 182
 183 MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface");
 184
 185 #define io_ptr          ppriv_ptr0
 186
 187 /* This is only used in the CTIO */
 188 #define ccb_atio        ppriv_ptr1
 189
 190 int                     ctlfeinitialize(void);
 191 void                    ctlfeshutdown(void);
 192 static periph_init_t    ctlfeperiphinit;
 193 static void             ctlfeasync(void *callback_arg, uint32_t code,
 194                                    struct cam_path *path, void *arg);
 195 static periph_ctor_t    ctlferegister;
 196 static periph_oninv_t   ctlfeoninvalidate;
 197 static periph_dtor_t    ctlfecleanup;
 198 static periph_start_t   ctlfestart;
 199 static void             ctlfedone(struct cam_periph *periph,
 200                                   union ccb *done_ccb);
 201
 202 static void             ctlfe_onoffline(void *arg, int online);
 203 static void             ctlfe_online(void *arg);
 204 static void             ctlfe_offline(void *arg);
 205 static int              ctlfe_lun_enable(void *arg, struct ctl_id targ_id,
 206                                          int lun_id);
 207 static int              ctlfe_lun_disable(void *arg, struct ctl_id targ_id,
 208                                           int lun_id);
 209 static void             ctlfe_dump_sim(struct cam_sim *sim);
 210 static void             ctlfe_dump_queue(struct ctlfe_lun_softc *softc);
 211 static void             ctlfe_datamove(union ctl_io *io);
 212 static void             ctlfe_done(union ctl_io *io);
 213 static void             ctlfe_dump(void);
 214
 215 static struct periph_driver ctlfe_driver =
 216 {
 217         ctlfeperiphinit, "ctl",
 218         TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0,
 219         CAM_PERIPH_DRV_EARLY
 220 };
 221
 222 static struct ctl_frontend ctlfe_frontend =
 223 {
 224         .name = "camtgt",
 225         .init = ctlfeinitialize,
 226         .fe_dump = ctlfe_dump,
 227         .shutdown = ctlfeshutdown,
 228 };
 229 CTL_FRONTEND_DECLARE(ctlfe, ctlfe_frontend);
 230
 231 void
 232 ctlfeshutdown(void)
 233 {
 234         return;
 235 }
 236
 237 int
 238 ctlfeinitialize(void)
 239 {
 240
 241         STAILQ_INIT(&ctlfe_softc_list);
 242         mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF);
 243         periphdriver_register(&ctlfe_driver);
 244         return (0);
 245 }
 246
 247 void
 248 ctlfeperiphinit(void)
 249 {
 250         cam_status status;
 251
 252         status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED |
 253                                     AC_CONTRACT, ctlfeasync, NULL, NULL);
 254         if (status != CAM_REQ_CMP) {
 255                 printf("ctl: Failed to attach async callback due to CAM "
 256                        "status 0x%x!\n", status);
 257         }
 258 }
 259
 260 static void
 261 ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 262 {
 263         struct ctlfe_softc *softc;
 264
 265 #ifdef CTLFEDEBUG
 266         printf("%s: entered\n", __func__);
 267 #endif
 268
 269         mtx_lock(&ctlfe_list_mtx);
 270         STAILQ_FOREACH(softc, &ctlfe_softc_list, links) {
 271                 if (softc->path_id == xpt_path_path_id(path))
 272                         break;
 273         }
 274         mtx_unlock(&ctlfe_list_mtx);
 275
 276         /*
 277          * When a new path gets registered, and it is capable of target
 278          * mode, go ahead and attach.  Later on, we may need to be more
 279          * selective, but for now this will be sufficient.
 280          */
 281         switch (code) {
 282         case AC_PATH_REGISTERED: {
 283                 struct ctl_port *port;
 284                 struct ccb_pathinq *cpi;
 285                 int retval;
 286
 287                 cpi = (struct ccb_pathinq *)arg;
 288
 289                 /* Don't attach if it doesn't support target mode */
 290                 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) {
 291 #ifdef CTLFEDEBUG
 292                         printf("%s: SIM %s%d doesn't support target mode\n",
 293                                __func__, cpi->dev_name, cpi->unit_number);
 294 #endif
 295                         break;
 296                 }
 297
 298                 if (softc != NULL) {
 299 #ifdef CTLFEDEBUG
 300                         printf("%s: CTL port for CAM path %u already exists\n",
 301                                __func__, xpt_path_path_id(path));
 302 #endif
 303                         break;
 304                 }
 305
 306 #ifdef CTLFE_INIT_ENABLE
 307                 if (ctlfe_num_targets >= ctlfe_max_targets) {
 308                         union ccb *ccb;
 309
 310                         ccb = (union ccb *)malloc(sizeof(*ccb), M_TEMP,
 311                                                   M_NOWAIT | M_ZERO);
 312                         if (ccb == NULL) {
 313                                 printf("%s: unable to malloc CCB!\n", __func__);
 314                                 return;
 315                         }
 316                         xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE);
 317
 318                         ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
 319                         ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
 320                         ccb->knob.xport_specific.fc.role = KNOB_ROLE_INITIATOR;
 321
 322                         xpt_action(ccb);
 323
 324                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) !=
 325                              CAM_REQ_CMP) {
 326                                 printf("%s: SIM %s%d (path id %d) initiator "
 327                                        "enable failed with status %#x\n",
 328                                        __func__, cpi->dev_name,
 329                                        cpi->unit_number, cpi->ccb_h.path_id,
 330                                        ccb->ccb_h.status);
 331                         } else {
 332                                 printf("%s: SIM %s%d (path id %d) initiator "
 333                                        "enable succeeded\n",
 334                                        __func__, cpi->dev_name,
 335                                        cpi->unit_number, cpi->ccb_h.path_id);
 336                         }
 337
 338                         free(ccb, M_TEMP);
 339
 340                         break;
 341                 } else {
 342                         ctlfe_num_targets++;
 343                 }
 344
 345                 printf("%s: ctlfe_num_targets = %d\n", __func__,
 346                        ctlfe_num_targets);
 347 #endif /* CTLFE_INIT_ENABLE */
 348
 349                 /*
 350                  * We're in an interrupt context here, so we have to
 351                  * use M_NOWAIT.  Of course this means trouble if we
 352                  * can't allocate memory.
 353                  */
 354                 softc = malloc(sizeof(*softc), M_CTLFE, M_NOWAIT | M_ZERO);
 355                 if (softc == NULL) {
 356                         printf("%s: unable to malloc %zd bytes for softc\n",
 357                                __func__, sizeof(*softc));
 358                         return;
 359                 }
 360
 361                 softc->path_id = cpi->ccb_h.path_id;
 362                 softc->sim = xpt_path_sim(path);
 363                 if (cpi->maxio != 0)
 364                         softc->maxio = cpi->maxio;
 365                 else
 366                         softc->maxio = DFLTPHYS;
 367                 mtx_init(&softc->lun_softc_mtx, "LUN softc mtx", NULL, MTX_DEF);
 368                 STAILQ_INIT(&softc->lun_softc_list);
 369
 370                 port = &softc->port;
 371                 port->frontend = &ctlfe_frontend;
 372
 373                 /*
 374                  * XXX KDM should we be more accurate here ?
 375                  */
 376                 if (cpi->transport == XPORT_FC)
 377                         port->port_type = CTL_PORT_FC;
 378                 else if (cpi->transport == XPORT_SAS)
 379                         port->port_type = CTL_PORT_SAS;
 380                 else
 381                         port->port_type = CTL_PORT_SCSI;
 382
 383                 /* XXX KDM what should the real number be here? */
 384                 port->num_requested_ctl_io = 4096;
 385                 snprintf(softc->port_name, sizeof(softc->port_name),
 386                          "%s%d", cpi->dev_name, cpi->unit_number);
 387                 /*
 388                  * XXX KDM it would be nice to allocate storage in the
 389                  * frontend structure itself.
 390                  */
 391                 port->port_name = softc->port_name;
 392                 port->physical_port = cpi->bus_id;
 393                 port->virtual_port = 0;
 394                 port->port_online = ctlfe_online;
 395                 port->port_offline = ctlfe_offline;
 396                 port->onoff_arg = softc;
 397                 port->lun_enable = ctlfe_lun_enable;
 398                 port->lun_disable = ctlfe_lun_disable;
 399                 port->targ_lun_arg = softc;
 400                 port->fe_datamove = ctlfe_datamove;
 401                 port->fe_done = ctlfe_done;
 402                 /*
 403                  * XXX KDM the path inquiry doesn't give us the maximum
 404                  * number of targets supported.
 405                  */
 406                 port->max_targets = cpi->max_target;
 407                 port->max_target_id = cpi->max_target;
 408
 409                 /*
 410                  * XXX KDM need to figure out whether we're the master or
 411                  * slave.
 412                  */
 413 #ifdef CTLFEDEBUG
 414                 printf("%s: calling ctl_port_register() for %s%d\n",
 415                        __func__, cpi->dev_name, cpi->unit_number);
 416 #endif
 417                 retval = ctl_port_register(port);
 418                 if (retval != 0) {
 419                         printf("%s: ctl_port_register() failed with "
 420                                "error %d!\n", __func__, retval);
 421                         mtx_destroy(&softc->lun_softc_mtx);
 422                         free(softc, M_CTLFE);
 423                         break;
 424                 } else {
 425                         mtx_lock(&ctlfe_list_mtx);
 426                         STAILQ_INSERT_TAIL(&ctlfe_softc_list, softc, links);
 427                         mtx_unlock(&ctlfe_list_mtx);
 428                 }
 429
 430                 break;
 431         }
 432         case AC_PATH_DEREGISTERED: {
 433
 434                 if (softc != NULL) {
 435                         /*
 436                          * XXX KDM are we certain at this point that there
 437                          * are no outstanding commands for this frontend?
 438                          */
 439                         mtx_lock(&ctlfe_list_mtx);
 440                         STAILQ_REMOVE(&ctlfe_softc_list, softc, ctlfe_softc,
 441                             links);
 442                         mtx_unlock(&ctlfe_list_mtx);
 443                         ctl_port_deregister(&softc->port);
 444                         mtx_destroy(&softc->lun_softc_mtx);
 445                         free(softc, M_CTLFE);
 446                 }
 447                 break;
 448         }
 449         case AC_CONTRACT: {
 450                 struct ac_contract *ac;
 451
 452                 ac = (struct ac_contract *)arg;
 453
 454                 switch (ac->contract_number) {
 455                 case AC_CONTRACT_DEV_CHG: {
 456                         struct ac_device_changed *dev_chg;
 457                         int retval;
 458
 459                         dev_chg = (struct ac_device_changed *)ac->contract_data;
 460
 461                         printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n",
 462                                __func__, dev_chg->wwpn, dev_chg->port,
 463                                xpt_path_path_id(path), dev_chg->target,
 464                                (dev_chg->arrived == 0) ?  "left" : "arrived");
 465
 466                         if (softc == NULL) {
 467                                 printf("%s: CTL port for CAM path %u not "
 468                                        "found!\n", __func__,
 469                                        xpt_path_path_id(path));
 470                                 break;
 471                         }
 472                         if (dev_chg->arrived != 0) {
 473                                 retval = ctl_add_initiator(&softc->port,
 474                                     dev_chg->target, dev_chg->wwpn, NULL);
 475                         } else {
 476                                 retval = ctl_remove_initiator(&softc->port,
 477                                     dev_chg->target);
 478                         }
 479
 480                         if (retval < 0) {
 481                                 printf("%s: could not %s port %d iid %u "
 482                                        "WWPN %#jx!\n", __func__,
 483                                        (dev_chg->arrived != 0) ? "add" :
 484                                        "remove", softc->port.targ_port,
 485                                        dev_chg->target,
 486                                        (uintmax_t)dev_chg->wwpn);
 487                         }
 488                         break;
 489                 }
 490                 default:
 491                         printf("%s: unsupported contract number %ju\n",
 492                                __func__, (uintmax_t)ac->contract_number);
 493                         break;
 494                 }
 495                 break;
 496         }
 497         default:
 498                 break;
 499         }
 500 }
 501
 502 static cam_status
 503 ctlferegister(struct cam_periph *periph, void *arg)
 504 {
 505         struct ctlfe_softc *bus_softc;
 506         struct ctlfe_lun_softc *softc;
 507         union ccb en_lun_ccb;
 508         cam_status status;
 509         int i;
 510
 511         softc = (struct ctlfe_lun_softc *)arg;
 512         bus_softc = softc->parent_softc;
 513
 514         TAILQ_INIT(&softc->work_queue);
 515         softc->periph = periph;
 516         periph->softc = softc;
 517
 518         xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
 519         en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
 520         en_lun_ccb.cel.grp6_len = 0;
 521         en_lun_ccb.cel.grp7_len = 0;
 522         en_lun_ccb.cel.enable = 1;
 523         xpt_action(&en_lun_ccb);
 524         status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
 525         if (status != CAM_REQ_CMP) {
 526                 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n",
 527                           __func__, en_lun_ccb.ccb_h.status);
 528                 return (status);
 529         }
 530
 531         status = CAM_REQ_CMP;
 532
 533         for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) {
 534                 union ccb *new_ccb;
 535                 union ctl_io *new_io;
 536
 537                 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
 538                                               M_ZERO|M_NOWAIT);
 539                 if (new_ccb == NULL) {
 540                         status = CAM_RESRC_UNAVAIL;
 541                         break;
 542                 }
 543                 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
 544                 if (new_io == NULL) {
 545                         free(new_ccb, M_CTLFE);
 546                         status = CAM_RESRC_UNAVAIL;
 547                         break;
 548                 }
 549                 new_ccb->ccb_h.io_ptr = new_io;
 550
 551                 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
 552                 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO;
 553                 new_ccb->ccb_h.cbfcnp = ctlfedone;
 554                 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
 555                 xpt_action(new_ccb);
 556                 softc->atios_sent++;
 557                 status = new_ccb->ccb_h.status;
 558                 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
 559                         ctl_free_io(new_io);
 560                         free(new_ccb, M_CTLFE);
 561                         break;
 562                 }
 563         }
 564
 565         status = cam_periph_acquire(periph);
 566         if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 567                 xpt_print(periph->path, "%s: could not acquire reference "
 568                           "count, status = %#x\n", __func__, status);
 569                 return (status);
 570         }
 571
 572         if (i == 0) {
 573                 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, "
 574                           "status 0x%x\n", __func__, status);
 575                 return (CAM_REQ_CMP_ERR);
 576         }
 577
 578         for (i = 0; i < CTLFE_IN_PER_LUN; i++) {
 579                 union ccb *new_ccb;
 580                 union ctl_io *new_io;
 581
 582                 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
 583                                               M_ZERO|M_NOWAIT);
 584                 if (new_ccb == NULL) {
 585                         status = CAM_RESRC_UNAVAIL;
 586                         break;
 587                 }
 588                 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
 589                 if (new_io == NULL) {
 590                         free(new_ccb, M_CTLFE);
 591                         status = CAM_RESRC_UNAVAIL;
 592                         break;
 593                 }
 594                 new_ccb->ccb_h.io_ptr = new_io;
 595
 596                 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
 597                 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
 598                 new_ccb->ccb_h.cbfcnp = ctlfedone;
 599                 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
 600                 xpt_action(new_ccb);
 601                 softc->inots_sent++;
 602                 status = new_ccb->ccb_h.status;
 603                 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
 604                         /*
 605                          * Note that we don't free the CCB here.  If the
 606                          * status is not CAM_REQ_INPROG, then we're
 607                          * probably talking to a SIM that says it is
 608                          * target-capable but doesn't support the
 609                          * XPT_IMMEDIATE_NOTIFY CCB.  i.e. it supports the
 610                          * older API.  In that case, it'll call xpt_done()
 611                          * on the CCB, and we need to free it in our done
 612                          * routine as a result.
 613                          */
 614                         break;
 615                 }
 616         }
 617         if ((i == 0)
 618          || (status != CAM_REQ_INPROG)) {
 619                 xpt_print(periph->path, "%s: could not allocate immediate "
 620                           "notify CCBs, status 0x%x\n", __func__, status);
 621                 return (CAM_REQ_CMP_ERR);
 622         }
 623         mtx_lock(&bus_softc->lun_softc_mtx);
 624         STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links);
 625         mtx_unlock(&bus_softc->lun_softc_mtx);
 626         return (CAM_REQ_CMP);
 627 }
 628
 629 static void
 630 ctlfeoninvalidate(struct cam_periph *periph)
 631 {
 632         union ccb en_lun_ccb;
 633         cam_status status;
 634         struct ctlfe_softc *bus_softc;
 635         struct ctlfe_lun_softc *softc;
 636
 637         softc = (struct ctlfe_lun_softc *)periph->softc;
 638
 639         xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
 640         en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
 641         en_lun_ccb.cel.grp6_len = 0;
 642         en_lun_ccb.cel.grp7_len = 0;
 643         en_lun_ccb.cel.enable = 0;
 644         xpt_action(&en_lun_ccb);
 645         status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
 646         if (status != CAM_REQ_CMP) {
 647                 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n",
 648                           __func__, en_lun_ccb.ccb_h.status);
 649                 /*
 650                  * XXX KDM what do we do now?
 651                  */
 652         }
 653         xpt_print(periph->path, "LUN removed, %ju ATIOs outstanding, %ju "
 654                   "INOTs outstanding, %d refs\n", softc->atios_sent -
 655                   softc->atios_returned, softc->inots_sent -
 656                   softc->inots_returned, periph->refcount);
 657
 658         bus_softc = softc->parent_softc;
 659         mtx_lock(&bus_softc->lun_softc_mtx);
 660         STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links);
 661         mtx_unlock(&bus_softc->lun_softc_mtx);
 662 }
 663
 664 static void
 665 ctlfecleanup(struct cam_periph *periph)
 666 {
 667         struct ctlfe_lun_softc *softc;
 668
 669         xpt_print(periph->path, "%s: Called\n", __func__);
 670
 671         softc = (struct ctlfe_lun_softc *)periph->softc;
 672
 673         /*
 674          * XXX KDM is there anything else that needs to be done here?
 675          */
 676
 677         free(softc, M_CTLFE);
 678 }
 679
 680 static void
 681 ctlfedata(struct ctlfe_lun_softc *softc, union ctl_io *io,
 682     ccb_flags *flags, uint8_t **data_ptr, uint32_t *dxfer_len,
 683     u_int16_t *sglist_cnt)
 684 {
 685         struct ctlfe_softc *bus_softc;
 686         struct ctlfe_lun_cmd_info *cmd_info;
 687         struct ctl_sg_entry *ctl_sglist;
 688         bus_dma_segment_t *cam_sglist;
 689         size_t off;
 690         int i, idx;
 691
 692         cmd_info = (struct ctlfe_lun_cmd_info *)io->io_hdr.port_priv;
 693         bus_softc = softc->parent_softc;
 694
 695         /*
 696          * Set the direction, relative to the initiator.
 697          */
 698         *flags &= ~CAM_DIR_MASK;
 699         if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN)
 700                 *flags |= CAM_DIR_IN;
 701         else
 702                 *flags |= CAM_DIR_OUT;
 703
 704         *flags &= ~CAM_DATA_MASK;
 705         idx = cmd_info->cur_transfer_index;
 706         off = cmd_info->cur_transfer_off;
 707         cmd_info->flags &= ~CTLFE_CMD_PIECEWISE;
 708         if (io->scsiio.kern_sg_entries == 0) {
 709                 /* No S/G list. */
 710                 *data_ptr = io->scsiio.kern_data_ptr + off;
 711                 if (io->scsiio.kern_data_len - off <= bus_softc->maxio) {
 712                         *dxfer_len = io->scsiio.kern_data_len - off;
 713                 } else {
 714                         *dxfer_len = bus_softc->maxio;
 715                         cmd_info->cur_transfer_index = -1;
 716                         cmd_info->cur_transfer_off = bus_softc->maxio;
 717                         cmd_info->flags |= CTLFE_CMD_PIECEWISE;
 718                 }
 719                 *sglist_cnt = 0;
 720
 721                 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
 722                         *flags |= CAM_DATA_PADDR;
 723                 else
 724                         *flags |= CAM_DATA_VADDR;
 725         } else {
 726                 /* S/G list with physical or virtual pointers. */
 727                 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr;
 728                 cam_sglist = cmd_info->cam_sglist;
 729                 *dxfer_len = 0;
 730                 for (i = 0; i < io->scsiio.kern_sg_entries - idx; i++) {
 731                         cam_sglist[i].ds_addr = (bus_addr_t)ctl_sglist[i + idx].addr + off;
 732                         if (ctl_sglist[i + idx].len - off <= bus_softc->maxio - *dxfer_len) {
 733                                 cam_sglist[i].ds_len = ctl_sglist[idx + i].len - off;
 734                                 *dxfer_len += cam_sglist[i].ds_len;
 735                         } else {
 736                                 cam_sglist[i].ds_len = bus_softc->maxio - *dxfer_len;
 737                                 cmd_info->cur_transfer_index = idx + i;
 738                                 cmd_info->cur_transfer_off = cam_sglist[i].ds_len + off;
 739                                 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
 740                                 *dxfer_len += cam_sglist[i].ds_len;
 741                                 if (ctl_sglist[i].len != 0)
 742                                         i++;
 743                                 break;
 744                         }
 745                         if (i == (CTLFE_MAX_SEGS - 1) &&
 746                             idx + i < (io->scsiio.kern_sg_entries - 1)) {
 747                                 cmd_info->cur_transfer_index = idx + i + 1;
 748                                 cmd_info->cur_transfer_off = 0;
 749                                 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
 750                                 i++;
 751                                 break;
 752                         }
 753                         off = 0;
 754                 }
 755                 *sglist_cnt = i;
 756                 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
 757                         *flags |= CAM_DATA_SG_PADDR;
 758                 else
 759                         *flags |= CAM_DATA_SG;
 760                 *data_ptr = (uint8_t *)cam_sglist;
 761         }
 762 }
 763
 764 static void
 765 ctlfestart(struct cam_periph *periph, union ccb *start_ccb)
 766 {
 767         struct ctlfe_lun_softc *softc;
 768         struct ctlfe_lun_cmd_info *cmd_info;
 769         struct ccb_hdr *ccb_h;
 770         struct ccb_accept_tio *atio;
 771         struct ccb_scsiio *csio;
 772         uint8_t *data_ptr;
 773         uint32_t dxfer_len;
 774         ccb_flags flags;
 775         union ctl_io *io;
 776         uint8_t scsi_status;
 777
 778         softc = (struct ctlfe_lun_softc *)periph->softc;
 779         softc->ccbs_alloced++;
 780
 781         ccb_h = TAILQ_FIRST(&softc->work_queue);
 782         if (ccb_h == NULL) {
 783                 softc->ccbs_freed++;
 784                 xpt_release_ccb(start_ccb);
 785                 return;
 786         }
 787
 788         /* Take the ATIO off the work queue */
 789         TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe);
 790         atio = (struct ccb_accept_tio *)ccb_h;
 791         io = (union ctl_io *)ccb_h->io_ptr;
 792         csio = &start_ccb->csio;
 793
 794         flags = atio->ccb_h.flags &
 795                 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK);
 796         cmd_info = (struct ctlfe_lun_cmd_info *)io->io_hdr.port_priv;
 797         cmd_info->cur_transfer_index = 0;
 798         cmd_info->cur_transfer_off = 0;
 799         cmd_info->flags = 0;
 800
 801         if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
 802                 /*
 803                  * Datamove call, we need to setup the S/G list.
 804                  */
 805                 scsi_status = 0;
 806                 csio->cdb_len = atio->cdb_len;
 807                 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len,
 808                     &csio->sglist_cnt);
 809                 io->scsiio.ext_data_filled += dxfer_len;
 810                 if (io->scsiio.ext_data_filled > io->scsiio.kern_total_len) {
 811                         xpt_print(periph->path, "%s: tag 0x%04x "
 812                                   "fill len %u > total %u\n",
 813                                   __func__, io->scsiio.tag_num,
 814                                   io->scsiio.ext_data_filled,
 815                                   io->scsiio.kern_total_len);
 816                 }
 817         } else {
 818                 /*
 819                  * We're done, send status back.
 820                  */
 821                 if ((io->io_hdr.flags & CTL_FLAG_ABORT) &&
 822                     (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) {
 823                         io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED;
 824
 825                         /*
 826                          * If this command was aborted, we don't
 827                          * need to send status back to the SIM.
 828                          * Just free the CTIO and ctl_io, and
 829                          * recycle the ATIO back to the SIM.
 830                          */
 831                         xpt_print(periph->path, "%s: aborted "
 832                                   "command 0x%04x discarded\n",
 833                                   __func__, io->scsiio.tag_num);
 834                         /*
 835                          * For a wildcard attachment, commands can
 836                          * come in with a specific target/lun.  Reset
 837                          * the target and LUN fields back to the
 838                          * wildcard values before we send them back
 839                          * down to the SIM.  The SIM has a wildcard
 840                          * LUN enabled, not whatever target/lun
 841                          * these happened to be.
 842                          */
 843                         if (softc->flags & CTLFE_LUN_WILDCARD) {
 844                                 atio->ccb_h.target_id = CAM_TARGET_WILDCARD;
 845                                 atio->ccb_h.target_lun = CAM_LUN_WILDCARD;
 846                         }
 847
 848                         if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) {
 849                                 cam_release_devq(periph->path,
 850                                                  /*relsim_flags*/0,
 851                                                  /*reduction*/0,
 852                                                  /*timeout*/0,
 853                                                  /*getcount_only*/0);
 854                                 atio->ccb_h.status &= ~CAM_DEV_QFRZN;
 855                         }
 856
 857                         if (atio->ccb_h.func_code != XPT_ACCEPT_TARGET_IO) {
 858                                 xpt_print(periph->path, "%s: func_code "
 859                                           "is %#x\n", __func__,
 860                                           atio->ccb_h.func_code);
 861                         }
 862                         start_ccb->ccb_h.func_code = XPT_ABORT;
 863                         start_ccb->cab.abort_ccb = (union ccb *)atio;
 864
 865                         /* Tell the SIM that we've aborted this ATIO */
 866                         xpt_action(start_ccb);
 867                         softc->ccbs_freed++;
 868                         xpt_release_ccb(start_ccb);
 869
 870                         /*
 871                          * Send the ATIO back down to the SIM.
 872                          */
 873                         xpt_action((union ccb *)atio);
 874                         softc->atios_sent++;
 875
 876                         /*
 877                          * If we still have work to do, ask for
 878                          * another CCB.  Otherwise, deactivate our
 879                          * callout.
 880                          */
 881                         if (!TAILQ_EMPTY(&softc->work_queue))
 882                                 xpt_schedule(periph, /*priority*/ 1);
 883                         return;
 884                 }
 885                 data_ptr = NULL;
 886                 dxfer_len = 0;
 887                 csio->sglist_cnt = 0;
 888                 scsi_status = 0;
 889         }
 890         if ((io->io_hdr.flags & CTL_FLAG_STATUS_QUEUED) &&
 891             (cmd_info->flags & CTLFE_CMD_PIECEWISE) == 0 &&
 892             ((io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) == 0 ||
 893              io->io_hdr.status == CTL_SUCCESS)) {
 894                 flags |= CAM_SEND_STATUS;
 895                 scsi_status = io->scsiio.scsi_status;
 896                 csio->sense_len = io->scsiio.sense_len;
 897 #ifdef CTLFEDEBUG
 898                 printf("%s: tag %04x status %x\n", __func__,
 899                        atio->tag_id, io->io_hdr.status);
 900 #endif
 901                 if (csio->sense_len != 0) {
 902                         csio->sense_data = io->scsiio.sense_data;
 903                         flags |= CAM_SEND_SENSE;
 904                 } else if (scsi_status == SCSI_STATUS_CHECK_COND) {
 905                         xpt_print(periph->path, "%s: check condition "
 906                                   "with no sense\n", __func__);
 907                 }
 908         }
 909
 910 #ifdef CTLFEDEBUG
 911         printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__,
 912                (flags & CAM_SEND_STATUS) ? "done" : "datamove",
 913                atio->tag_id, flags, data_ptr, dxfer_len);
 914 #endif
 915
 916         /*
 917          * Valid combinations:
 918          *  - CAM_SEND_STATUS, CAM_DATA_SG = 0, dxfer_len = 0,
 919          *    sglist_cnt = 0
 920          *  - CAM_SEND_STATUS = 0, CAM_DATA_SG = 0, dxfer_len != 0,
 921          *    sglist_cnt = 0
 922          *  - CAM_SEND_STATUS = 0, CAM_DATA_SG, dxfer_len != 0,
 923          *    sglist_cnt != 0
 924          */
 925 #ifdef CTLFEDEBUG
 926         if (((flags & CAM_SEND_STATUS)
 927           && (((flags & CAM_DATA_SG) != 0)
 928            || (dxfer_len != 0)
 929            || (csio->sglist_cnt != 0)))
 930          || (((flags & CAM_SEND_STATUS) == 0)
 931           && (dxfer_len == 0))
 932          || ((flags & CAM_DATA_SG)
 933           && (csio->sglist_cnt == 0))
 934          || (((flags & CAM_DATA_SG) == 0)
 935           && (csio->sglist_cnt != 0))) {
 936                 printf("%s: tag %04x cdb %02x flags %#x dxfer_len "
 937                        "%d sg %u\n", __func__, atio->tag_id,
 938                        atio->cdb_io.cdb_bytes[0], flags, dxfer_len,
 939                        csio->sglist_cnt);
 940                 printf("%s: tag %04x io status %#x\n", __func__,
 941                        atio->tag_id, io->io_hdr.status);
 942         }
 943 #endif
 944         cam_fill_ctio(csio,
 945                       /*retries*/ 2,
 946                       ctlfedone,
 947                       flags,
 948                       (flags & CAM_TAG_ACTION_VALID) ? MSG_SIMPLE_Q_TAG : 0,
 949                       atio->tag_id,
 950                       atio->init_id,
 951                       scsi_status,
 952                       /*data_ptr*/ data_ptr,
 953                       /*dxfer_len*/ dxfer_len,
 954                       /*timeout*/ 5 * 1000);
 955         start_ccb->ccb_h.flags |= CAM_UNLOCKED;
 956         start_ccb->ccb_h.ccb_atio = atio;
 957         if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED)
 958                 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
 959         io->io_hdr.flags &= ~(CTL_FLAG_DMA_QUEUED | CTL_FLAG_STATUS_QUEUED);
 960
 961         softc->ctios_sent++;
 962
 963         cam_periph_unlock(periph);
 964         xpt_action(start_ccb);
 965         cam_periph_lock(periph);
 966
 967         if ((atio->ccb_h.status & CAM_DEV_QFRZN) != 0) {
 968                 cam_release_devq(periph->path,
 969                                  /*relsim_flags*/0,
 970                                  /*reduction*/0,
 971                                  /*timeout*/0,
 972                                  /*getcount_only*/0);
 973                 atio->ccb_h.status &= ~CAM_DEV_QFRZN;
 974         }
 975
 976         /*
 977          * If we still have work to do, ask for another CCB.
 978          */
 979         if (!TAILQ_EMPTY(&softc->work_queue))
 980                 xpt_schedule(periph, /*priority*/ 1);
 981 }
 982
 983 static void
 984 ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb)
 985 {
 986         struct ctlfe_lun_softc *softc;
 987
 988         softc = (struct ctlfe_lun_softc *)periph->softc;
 989
 990         switch (ccb->ccb_h.func_code) {
 991         case XPT_ACCEPT_TARGET_IO:
 992                 softc->atios_returned++;
 993                 break;
 994         case XPT_IMMEDIATE_NOTIFY:
 995         case XPT_NOTIFY_ACKNOWLEDGE:
 996                 softc->inots_returned++;
 997                 break;
 998         default:
 999                 break;
1000         }
1001
1002         ctl_free_io(ccb->ccb_h.io_ptr);
1003         free(ccb, M_CTLFE);
1004
1005         KASSERT(softc->atios_returned <= softc->atios_sent, ("%s: "
1006                 "atios_returned %ju > atios_sent %ju", __func__,
1007                 softc->atios_returned, softc->atios_sent));
1008         KASSERT(softc->inots_returned <= softc->inots_sent, ("%s: "
1009                 "inots_returned %ju > inots_sent %ju", __func__,
1010                 softc->inots_returned, softc->inots_sent));
1011
1012         /*
1013          * If we have received all of our CCBs, we can release our
1014          * reference on the peripheral driver.  It will probably go away
1015          * now.
1016          */
1017         if ((softc->atios_returned == softc->atios_sent)
1018          && (softc->inots_returned == softc->inots_sent)) {
1019                 cam_periph_release_locked(periph);
1020         }
1021 }
1022
1023 static int
1024 ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset)
1025 {
1026         uint64_t lba;
1027         uint32_t num_blocks, nbc;
1028         uint8_t *cmdbyt = (atio->ccb_h.flags & CAM_CDB_POINTER)?
1029             atio->cdb_io.cdb_ptr : atio->cdb_io.cdb_bytes;
1030
1031         nbc = offset >> 9;      /* ASSUMING 512 BYTE BLOCKS */
1032
1033         switch (cmdbyt[0]) {
1034         case READ_6:
1035         case WRITE_6:
1036         {
1037                 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt;
1038                 lba = scsi_3btoul(cdb->addr);
1039                 lba &= 0x1fffff;
1040                 num_blocks = cdb->length;
1041                 if (num_blocks == 0)
1042                         num_blocks = 256;
1043                 lba += nbc;
1044                 num_blocks -= nbc;
1045                 scsi_ulto3b(lba, cdb->addr);
1046                 cdb->length = num_blocks;
1047                 break;
1048         }
1049         case READ_10:
1050         case WRITE_10:
1051         {
1052                 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt;
1053                 lba = scsi_4btoul(cdb->addr);
1054                 num_blocks = scsi_2btoul(cdb->length);
1055                 lba += nbc;
1056                 num_blocks -= nbc;
1057                 scsi_ulto4b(lba, cdb->addr);
1058                 scsi_ulto2b(num_blocks, cdb->length);
1059                 break;
1060         }
1061         case READ_12:
1062         case WRITE_12:
1063         {
1064                 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt;
1065                 lba = scsi_4btoul(cdb->addr);
1066                 num_blocks = scsi_4btoul(cdb->length);
1067                 lba += nbc;
1068                 num_blocks -= nbc;
1069                 scsi_ulto4b(lba, cdb->addr);
1070                 scsi_ulto4b(num_blocks, cdb->length);
1071                 break;
1072         }
1073         case READ_16:
1074         case WRITE_16:
1075         case WRITE_ATOMIC_16:
1076         {
1077                 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt;
1078                 lba = scsi_8btou64(cdb->addr);
1079                 num_blocks = scsi_4btoul(cdb->length);
1080                 lba += nbc;
1081                 num_blocks -= nbc;
1082                 scsi_u64to8b(lba, cdb->addr);
1083                 scsi_ulto4b(num_blocks, cdb->length);
1084                 break;
1085         }
1086         default:
1087                 return -1;
1088         }
1089         return (0);
1090 }
1091
1092 static void
1093 ctlfedone(struct cam_periph *periph, union ccb *done_ccb)
1094 {
1095         struct ctlfe_lun_softc *softc;
1096         struct ctlfe_softc *bus_softc;
1097         struct ccb_accept_tio *atio = NULL;
1098         union ctl_io *io = NULL;
1099         struct mtx *mtx;
1100
1101         KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0,
1102             ("CCB in ctlfedone() without CAM_UNLOCKED flag"));
1103 #ifdef CTLFE_DEBUG
1104         printf("%s: entered, func_code = %#x\n", __func__,
1105                done_ccb->ccb_h.func_code);
1106 #endif
1107
1108         softc = (struct ctlfe_lun_softc *)periph->softc;
1109         bus_softc = softc->parent_softc;
1110         mtx = cam_periph_mtx(periph);
1111         mtx_lock(mtx);
1112
1113         /*
1114          * If the peripheral is invalid, ATIOs and immediate notify CCBs
1115          * need to be freed.  Most of the ATIOs and INOTs that come back
1116          * will be CCBs that are being returned from the SIM as a result of
1117          * our disabling the LUN.
1118          *
1119          * Other CCB types are handled in their respective cases below.
1120          */
1121         if (periph->flags & CAM_PERIPH_INVALID) {
1122                 switch (done_ccb->ccb_h.func_code) {
1123                 case XPT_ACCEPT_TARGET_IO:
1124                 case XPT_IMMEDIATE_NOTIFY:
1125                 case XPT_NOTIFY_ACKNOWLEDGE:
1126                         ctlfe_free_ccb(periph, done_ccb);
1127                         goto out;
1128                 default:
1129                         break;
1130                 }
1131
1132         }
1133         switch (done_ccb->ccb_h.func_code) {
1134         case XPT_ACCEPT_TARGET_IO: {
1135
1136                 atio = &done_ccb->atio;
1137
1138                 softc->atios_returned++;
1139
1140  resubmit:
1141                 /*
1142                  * Allocate a ctl_io, pass it to CTL, and wait for the
1143                  * datamove or done.
1144                  */
1145                 mtx_unlock(mtx);
1146                 io = done_ccb->ccb_h.io_ptr;
1147                 ctl_zero_io(io);
1148
1149                 /* Save pointers on both sides */
1150                 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = done_ccb;
1151                 done_ccb->ccb_h.io_ptr = io;
1152
1153                 /*
1154                  * Only SCSI I/O comes down this path, resets, etc. come
1155                  * down the immediate notify path below.
1156                  */
1157                 io->io_hdr.io_type = CTL_IO_SCSI;
1158                 io->io_hdr.nexus.initid.id = atio->init_id;
1159                 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1160                 io->io_hdr.nexus.targ_target.id = atio->ccb_h.target_id;
1161                 io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun;
1162                 io->scsiio.tag_num = atio->tag_id;
1163                 switch (atio->tag_action) {
1164                 case CAM_TAG_ACTION_NONE:
1165                         io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1166                         break;
1167                 case MSG_SIMPLE_TASK:
1168                         io->scsiio.tag_type = CTL_TAG_SIMPLE;
1169                         break;
1170                 case MSG_HEAD_OF_QUEUE_TASK:
1171                         io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
1172                         break;
1173                 case MSG_ORDERED_TASK:
1174                         io->scsiio.tag_type = CTL_TAG_ORDERED;
1175                         break;
1176                 case MSG_ACA_TASK:
1177                         io->scsiio.tag_type = CTL_TAG_ACA;
1178                         break;
1179                 default:
1180                         io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1181                         printf("%s: unhandled tag type %#x!!\n", __func__,
1182                                atio->tag_action);
1183                         break;
1184                 }
1185                 if (atio->cdb_len > sizeof(io->scsiio.cdb)) {
1186                         printf("%s: WARNING: CDB len %d > ctl_io space %zd\n",
1187                                __func__, atio->cdb_len, sizeof(io->scsiio.cdb));
1188                 }
1189                 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb));
1190                 bcopy(atio->cdb_io.cdb_bytes, io->scsiio.cdb,
1191                       io->scsiio.cdb_len);
1192
1193 #ifdef CTLFEDEBUG
1194                 printf("%s: %ju:%d:%ju:%d: tag %04x CDB %02x\n", __func__,
1195                         (uintmax_t)io->io_hdr.nexus.initid.id,
1196                         io->io_hdr.nexus.targ_port,
1197                         (uintmax_t)io->io_hdr.nexus.targ_target.id,
1198                         io->io_hdr.nexus.targ_lun,
1199                         io->scsiio.tag_num, io->scsiio.cdb[0]);
1200 #endif
1201
1202                 ctl_queue(io);
1203                 return;
1204         }
1205         case XPT_CONT_TARGET_IO: {
1206                 int srr = 0;
1207                 uint32_t srr_off = 0;
1208
1209                 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio;
1210                 io = (union ctl_io *)atio->ccb_h.io_ptr;
1211
1212                 softc->ctios_returned++;
1213 #ifdef CTLFEDEBUG
1214                 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n",
1215                        __func__, atio->tag_id, done_ccb->ccb_h.flags);
1216 #endif
1217                 /*
1218                  * Handle SRR case were the data pointer is pushed back hack
1219                  */
1220                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV
1221                     && done_ccb->csio.msg_ptr != NULL
1222                     && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED
1223                     && done_ccb->csio.msg_ptr[1] == 5
1224                     && done_ccb->csio.msg_ptr[2] == 0) {
1225                         srr = 1;
1226                         srr_off =
1227                             (done_ccb->csio.msg_ptr[3] << 24)
1228                             | (done_ccb->csio.msg_ptr[4] << 16)
1229                             | (done_ccb->csio.msg_ptr[5] << 8)
1230                             | (done_ccb->csio.msg_ptr[6]);
1231                 }
1232
1233                 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1234                         /*
1235                          * If status was being sent, the back end data is now
1236                          * history. Hack it up and resubmit a new command with
1237                          * the CDB adjusted. If the SIM does the right thing,
1238                          * all of the resid math should work.
1239                          */
1240                         softc->ccbs_freed++;
1241                         xpt_release_ccb(done_ccb);
1242                         if (ctlfe_adjust_cdb(atio, srr_off) == 0) {
1243                                 done_ccb = (union ccb *)atio;
1244                                 goto resubmit;
1245                         }
1246                         /*
1247                          * Fall through to doom....
1248                          */
1249                 } else if (srr) {
1250                         /*
1251                          * If we have an srr and we're still sending data, we
1252                          * should be able to adjust offsets and cycle again.
1253                          */
1254                         io->scsiio.kern_rel_offset =
1255                             io->scsiio.ext_data_filled = srr_off;
1256                         io->scsiio.ext_data_len = io->scsiio.kern_total_len -
1257                             io->scsiio.kern_rel_offset;
1258                         softc->ccbs_freed++;
1259                         io->scsiio.io_hdr.status = CTL_STATUS_NONE;
1260                         xpt_release_ccb(done_ccb);
1261                         TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h,
1262                                           periph_links.tqe);
1263                         xpt_schedule(periph, /*priority*/ 1);
1264                         break;
1265                 }
1266
1267                 if ((done_ccb->ccb_h.flags & CAM_SEND_STATUS) &&
1268                     (done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1269                         io->io_hdr.flags |= CTL_FLAG_STATUS_SENT;
1270
1271                 /*
1272                  * If we were sending status back to the initiator, free up
1273                  * resources.  If we were doing a datamove, call the
1274                  * datamove done routine.
1275                  */
1276                 if ((io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1277                         softc->ccbs_freed++;
1278                         xpt_release_ccb(done_ccb);
1279                         /*
1280                          * For a wildcard attachment, commands can come in
1281                          * with a specific target/lun.  Reset the target
1282                          * and LUN fields back to the wildcard values before
1283                          * we send them back down to the SIM.  The SIM has
1284                          * a wildcard LUN enabled, not whatever target/lun
1285                          * these happened to be.
1286                          */
1287                         if (softc->flags & CTLFE_LUN_WILDCARD) {
1288                                 atio->ccb_h.target_id = CAM_TARGET_WILDCARD;
1289                                 atio->ccb_h.target_lun = CAM_LUN_WILDCARD;
1290                         }
1291                         if (periph->flags & CAM_PERIPH_INVALID) {
1292                                 ctlfe_free_ccb(periph, (union ccb *)atio);
1293                         } else {
1294                                 softc->atios_sent++;
1295                                 mtx_unlock(mtx);
1296                                 xpt_action((union ccb *)atio);
1297                                 return;
1298                         }
1299                 } else {
1300                         struct ctlfe_lun_cmd_info *cmd_info;
1301                         struct ccb_scsiio *csio;
1302
1303                         csio = &done_ccb->csio;
1304                         cmd_info = (struct ctlfe_lun_cmd_info *)
1305                                 io->io_hdr.port_priv;
1306
1307                         io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG;
1308
1309                         io->scsiio.ext_data_len += csio->dxfer_len;
1310                         if (io->scsiio.ext_data_len >
1311                             io->scsiio.kern_total_len) {
1312                                 xpt_print(periph->path, "%s: tag 0x%04x "
1313                                           "done len %u > total %u sent %u\n",
1314                                           __func__, io->scsiio.tag_num,
1315                                           io->scsiio.ext_data_len,
1316                                           io->scsiio.kern_total_len,
1317                                           io->scsiio.ext_data_filled);
1318                         }
1319                         /*
1320                          * Translate CAM status to CTL status.  Success
1321                          * does not change the overall, ctl_io status.  In
1322                          * that case we just set port_status to 0.  If we
1323                          * have a failure, though, set a data phase error
1324                          * for the overall ctl_io.
1325                          */
1326                         switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) {
1327                         case CAM_REQ_CMP:
1328                                 io->io_hdr.port_status = 0;
1329                                 break;
1330                         default:
1331                                 /*
1332                                  * XXX KDM we probably need to figure out a
1333                                  * standard set of errors that the SIM
1334                                  * drivers should return in the event of a
1335                                  * data transfer failure.  A data phase
1336                                  * error will at least point the user to a
1337                                  * data transfer error of some sort.
1338                                  * Hopefully the SIM printed out some
1339                                  * additional information to give the user
1340                                  * a clue what happened.
1341                                  */
1342                                 io->io_hdr.port_status = 0xbad1;
1343                                 ctl_set_data_phase_error(&io->scsiio);
1344                                 /*
1345                                  * XXX KDM figure out residual.
1346                                  */
1347                                 break;
1348                         }
1349                         /*
1350                          * If we had to break this S/G list into multiple
1351                          * pieces, figure out where we are in the list, and
1352                          * continue sending pieces if necessary.
1353                          */
1354                         if ((cmd_info->flags & CTLFE_CMD_PIECEWISE)
1355                          && (io->io_hdr.port_status == 0)) {
1356                                 ccb_flags flags;
1357                                 uint8_t scsi_status;
1358                                 uint8_t *data_ptr;
1359                                 uint32_t dxfer_len;
1360
1361                                 flags = atio->ccb_h.flags &
1362                                         (CAM_DIS_DISCONNECT|
1363                                          CAM_TAG_ACTION_VALID);
1364
1365                                 ctlfedata(softc, io, &flags, &data_ptr,
1366                                     &dxfer_len, &csio->sglist_cnt);
1367
1368                                 scsi_status = 0;
1369
1370                                 if (((flags & CAM_SEND_STATUS) == 0)
1371                                  && (dxfer_len == 0)) {
1372                                         printf("%s: tag %04x no status or "
1373                                                "len cdb = %02x\n", __func__,
1374                                                atio->tag_id,
1375                                         atio->cdb_io.cdb_bytes[0]);
1376                                         printf("%s: tag %04x io status %#x\n",
1377                                                __func__, atio->tag_id,
1378                                                io->io_hdr.status);
1379                                 }
1380
1381                                 cam_fill_ctio(csio,
1382                                               /*retries*/ 2,
1383                                               ctlfedone,
1384                                               flags,
1385                                               (flags & CAM_TAG_ACTION_VALID) ?
1386                                                MSG_SIMPLE_Q_TAG : 0,
1387                                               atio->tag_id,
1388                                               atio->init_id,
1389                                               scsi_status,
1390                                               /*data_ptr*/ data_ptr,
1391                                               /*dxfer_len*/ dxfer_len,
1392                                               /*timeout*/ 5 * 1000);
1393
1394                                 csio->ccb_h.flags |= CAM_UNLOCKED;
1395                                 csio->resid = 0;
1396                                 csio->ccb_h.ccb_atio = atio;
1397                                 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
1398                                 softc->ctios_sent++;
1399                                 mtx_unlock(mtx);
1400                                 xpt_action((union ccb *)csio);
1401                         } else {
1402                                 /*
1403                                  * Release the CTIO.  The ATIO will be sent back
1404                                  * down to the SIM once we send status.
1405                                  */
1406                                 softc->ccbs_freed++;
1407                                 xpt_release_ccb(done_ccb);
1408                                 mtx_unlock(mtx);
1409
1410                                 /* Call the backend move done callback */
1411                                 io->scsiio.be_move_done(io);
1412                         }
1413                         return;
1414                 }
1415                 break;
1416         }
1417         case XPT_IMMEDIATE_NOTIFY: {
1418                 union ctl_io *io;
1419                 struct ccb_immediate_notify *inot;
1420                 cam_status status;
1421                 int frozen, send_ctl_io;
1422
1423                 inot = &done_ccb->cin1;
1424
1425                 softc->inots_returned++;
1426
1427                 frozen = (done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1428
1429                 printf("%s: got XPT_IMMEDIATE_NOTIFY status %#x tag %#x "
1430                        "seq %#x\n", __func__, inot->ccb_h.status,
1431                        inot->tag_id, inot->seq_id);
1432
1433                 io = done_ccb->ccb_h.io_ptr;
1434                 ctl_zero_io(io);
1435
1436                 send_ctl_io = 1;
1437
1438                 io->io_hdr.io_type = CTL_IO_TASK;
1439                 io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr =done_ccb;
1440                 inot->ccb_h.io_ptr = io;
1441                 io->io_hdr.nexus.initid.id = inot->initiator_id;
1442                 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1443                 io->io_hdr.nexus.targ_target.id = inot->ccb_h.target_id;
1444                 io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun;
1445                 /* XXX KDM should this be the tag_id? */
1446                 io->taskio.tag_num = inot->seq_id;
1447
1448                 status = inot->ccb_h.status & CAM_STATUS_MASK;
1449                 switch (status) {
1450                 case CAM_SCSI_BUS_RESET:
1451                         io->taskio.task_action = CTL_TASK_BUS_RESET;
1452                         break;
1453                 case CAM_BDR_SENT:
1454                         io->taskio.task_action = CTL_TASK_TARGET_RESET;
1455                         break;
1456                 case CAM_MESSAGE_RECV:
1457                         switch (inot->arg) {
1458                         case MSG_ABORT_TASK_SET:
1459                                 io->taskio.task_action =
1460                                     CTL_TASK_ABORT_TASK_SET;
1461                                 break;
1462                         case MSG_TARGET_RESET:
1463                                 io->taskio.task_action =
1464                                         CTL_TASK_TARGET_RESET;
1465                                 break;
1466                         case MSG_ABORT_TASK:
1467                                 io->taskio.task_action =
1468                                         CTL_TASK_ABORT_TASK;
1469                                 break;
1470                         case MSG_LOGICAL_UNIT_RESET:
1471                                 io->taskio.task_action =
1472                                         CTL_TASK_LUN_RESET;
1473                                 break;
1474                         case MSG_CLEAR_TASK_SET:
1475                                 io->taskio.task_action =
1476                                         CTL_TASK_CLEAR_TASK_SET;
1477                                 break;
1478                         case MSG_CLEAR_ACA:
1479                                 io->taskio.task_action =
1480                                         CTL_TASK_CLEAR_ACA;
1481                                 break;
1482                         case MSG_NOOP:
1483                                 send_ctl_io = 0;
1484                                 break;
1485                         default:
1486                                 xpt_print(periph->path,
1487                                           "%s: unsupported message 0x%x\n",
1488                                           __func__, inot->arg);
1489                                 send_ctl_io = 0;
1490                                 break;
1491                         }
1492                         break;
1493                 case CAM_REQ_ABORTED:
1494                         /*
1495                          * This request was sent back by the driver.
1496                          * XXX KDM what do we do here?
1497                          */
1498                         send_ctl_io = 0;
1499                         break;
1500                 case CAM_REQ_INVALID:
1501                 case CAM_PROVIDE_FAIL:
1502                 default:
1503                         /*
1504                          * We should only get here if we're talking
1505                          * to a talking to a SIM that is target
1506                          * capable but supports the old API.  In
1507                          * that case, we need to just free the CCB.
1508                          * If we actually send a notify acknowledge,
1509                          * it will send that back with an error as
1510                          * well.
1511                          */
1512
1513                         if ((status != CAM_REQ_INVALID)
1514                          && (status != CAM_PROVIDE_FAIL))
1515                                 xpt_print(periph->path,
1516                                           "%s: unsupported CAM status 0x%x\n",
1517                                           __func__, status);
1518
1519                         ctlfe_free_ccb(periph, done_ccb);
1520
1521                         goto out;
1522                 }
1523                 if (send_ctl_io != 0) {
1524                         ctl_queue(io);
1525                 } else {
1526                         done_ccb->ccb_h.status = CAM_REQ_INPROG;
1527                         done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1528                         xpt_action(done_ccb);
1529                 }
1530
1531                 if (frozen != 0) {
1532                         cam_release_devq(periph->path,
1533                                          /*relsim_flags*/ 0,
1534                                          /*opening reduction*/ 0,
1535                                          /*timeout*/ 0,
1536                                          /*getcount_only*/ 0);
1537                 }
1538                 break;
1539         }
1540         case XPT_NOTIFY_ACKNOWLEDGE:
1541                 /*
1542                  * Queue this back down to the SIM as an immediate notify.
1543                  */
1544                 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
1545                 xpt_action(done_ccb);
1546                 softc->inots_sent++;
1547                 break;
1548         case XPT_SET_SIM_KNOB:
1549         case XPT_GET_SIM_KNOB:
1550                 break;
1551         default:
1552                 panic("%s: unexpected CCB type %#x", __func__,
1553                       done_ccb->ccb_h.func_code);
1554                 break;
1555         }
1556
1557 out:
1558         mtx_unlock(mtx);
1559 }
1560
1561 static void
1562 ctlfe_onoffline(void *arg, int online)
1563 {
1564         struct ctlfe_softc *bus_softc;
1565         union ccb *ccb;
1566         cam_status status;
1567         struct cam_path *path;
1568         int set_wwnn;
1569
1570         bus_softc = (struct ctlfe_softc *)arg;
1571
1572         set_wwnn = 0;
1573
1574         status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id,
1575                 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1576         if (status != CAM_REQ_CMP) {
1577                 printf("%s: unable to create path!\n", __func__);
1578                 return;
1579         }
1580         ccb = xpt_alloc_ccb();
1581         xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE);
1582
1583         /*
1584          * Copan WWN format:
1585          *
1586          * Bits 63-60:  0x5             NAA, IEEE registered name
1587          * Bits 59-36:  0x000ED5        IEEE Company name assigned to Copan
1588          * Bits 35-12:                  Copan SSN (Sequential Serial Number)
1589          * Bits 11-8:                   Type of port:
1590          *                                      1 == N-Port
1591          *                                      2 == F-Port
1592          *                                      3 == NL-Port
1593          * Bits 7-0:                    0 == Node Name, >0 == Port Number
1594          */
1595
1596         if (online != 0) {
1597
1598                 ccb->ccb_h.func_code = XPT_GET_SIM_KNOB;
1599
1600
1601                 xpt_action(ccb);
1602
1603
1604                 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){
1605 #ifdef RANDOM_WWNN
1606                         uint64_t random_bits;
1607 #endif
1608
1609                         printf("%s: %s current WWNN %#jx\n", __func__,
1610                                bus_softc->port_name,
1611                                ccb->knob.xport_specific.fc.wwnn);
1612                         printf("%s: %s current WWPN %#jx\n", __func__,
1613                                bus_softc->port_name,
1614                                ccb->knob.xport_specific.fc.wwpn);
1615
1616 #ifdef RANDOM_WWNN
1617                         arc4rand(&random_bits, sizeof(random_bits), 0);
1618 #endif
1619
1620                         /*
1621                          * XXX KDM this is a bit of a kludge for now.  We
1622                          * take the current WWNN/WWPN from the card, and
1623                          * replace the company identifier and the NL-Port
1624                          * indicator and the port number (for the WWPN).
1625                          * This should be replaced later with ddb_GetWWNN,
1626                          * or possibly a more centralized scheme.  (It
1627                          * would be nice to have the WWNN/WWPN for each
1628                          * port stored in the ctl_port structure.)
1629                          */
1630 #ifdef RANDOM_WWNN
1631                         ccb->knob.xport_specific.fc.wwnn =
1632                                 (random_bits &
1633                                 0x0000000fffffff00ULL) |
1634                                 /* Company ID */ 0x5000ED5000000000ULL |
1635                                 /* NL-Port */    0x0300;
1636                         ccb->knob.xport_specific.fc.wwpn =
1637                                 (random_bits &
1638                                 0x0000000fffffff00ULL) |
1639                                 /* Company ID */ 0x5000ED5000000000ULL |
1640                                 /* NL-Port */    0x3000 |
1641                                 /* Port Num */ (bus_softc->port.targ_port & 0xff);
1642
1643                         /*
1644                          * This is a bit of an API break/reversal, but if
1645                          * we're doing the random WWNN that's a little
1646                          * different anyway.  So record what we're actually
1647                          * using with the frontend code so it's reported
1648                          * accurately.
1649                          */
1650                         ctl_port_set_wwns(&bus_softc->port,
1651                             true, ccb->knob.xport_specific.fc.wwnn,
1652                             true, ccb->knob.xport_specific.fc.wwpn);
1653                         set_wwnn = 1;
1654 #else /* RANDOM_WWNN */
1655                         /*
1656                          * If the user has specified a WWNN/WWPN, send them
1657                          * down to the SIM.  Otherwise, record what the SIM
1658                          * has reported.
1659                          */
1660                         if (bus_softc->port.wwnn != 0 && bus_softc->port.wwnn
1661                             != ccb->knob.xport_specific.fc.wwnn) {
1662                                 ccb->knob.xport_specific.fc.wwnn =
1663                                     bus_softc->port.wwnn;
1664                                 set_wwnn = 1;
1665                         } else {
1666                                 ctl_port_set_wwns(&bus_softc->port,
1667                                     true, ccb->knob.xport_specific.fc.wwnn,
1668                                     false, 0);
1669                         }
1670                         if (bus_softc->port.wwpn != 0 && bus_softc->port.wwpn
1671                              != ccb->knob.xport_specific.fc.wwpn) {
1672                                 ccb->knob.xport_specific.fc.wwpn =
1673                                     bus_softc->port.wwpn;
1674                                 set_wwnn = 1;
1675                         } else {
1676                                 ctl_port_set_wwns(&bus_softc->port,
1677                                     false, 0,
1678                                     true, ccb->knob.xport_specific.fc.wwpn);
1679                         }
1680 #endif /* RANDOM_WWNN */
1681
1682
1683                         if (set_wwnn != 0) {
1684                                 printf("%s: %s new WWNN %#jx\n", __func__,
1685                                        bus_softc->port_name,
1686                                 ccb->knob.xport_specific.fc.wwnn);
1687                                 printf("%s: %s new WWPN %#jx\n", __func__,
1688                                        bus_softc->port_name,
1689                                        ccb->knob.xport_specific.fc.wwpn);
1690                         }
1691                 } else {
1692                         printf("%s: %s has no valid WWNN/WWPN\n", __func__,
1693                                bus_softc->port_name);
1694                 }
1695         }
1696         ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
1697         ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
1698         if (set_wwnn != 0)
1699                 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS;
1700
1701         if (online != 0)
1702                 ccb->knob.xport_specific.fc.role = KNOB_ROLE_TARGET;
1703         else
1704                 ccb->knob.xport_specific.fc.role = KNOB_ROLE_NONE;
1705
1706         xpt_action(ccb);
1707
1708         if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1709                 printf("%s: SIM %s (path id %d) target %s failed with "
1710                        "status %#x\n",
1711                        __func__, bus_softc->port_name, bus_softc->path_id,
1712                        (online != 0) ? "enable" : "disable",
1713                        ccb->ccb_h.status);
1714         } else {
1715                 printf("%s: SIM %s (path id %d) target %s succeeded\n",
1716                        __func__, bus_softc->port_name, bus_softc->path_id,
1717                        (online != 0) ? "enable" : "disable");
1718         }
1719
1720         xpt_free_path(path);
1721         xpt_free_ccb(ccb);
1722 }
1723
1724 static void
1725 ctlfe_online(void *arg)
1726 {
1727         struct ctlfe_softc *bus_softc;
1728         struct cam_path *path;
1729         cam_status status;
1730         struct ctlfe_lun_softc *lun_softc;
1731         struct cam_periph *periph;
1732
1733         bus_softc = (struct ctlfe_softc *)arg;
1734
1735         /*
1736          * Create the wildcard LUN before bringing the port online.
1737          */
1738         status = xpt_create_path(&path, /*periph*/ NULL,
1739                                  bus_softc->path_id, CAM_TARGET_WILDCARD,
1740                                  CAM_LUN_WILDCARD);
1741         if (status != CAM_REQ_CMP) {
1742                 printf("%s: unable to create path for wildcard periph\n",
1743                                 __func__);
1744                 return;
1745         }
1746
1747         lun_softc = malloc(sizeof(*lun_softc), M_CTLFE, M_WAITOK | M_ZERO);
1748
1749         xpt_path_lock(path);
1750         periph = cam_periph_find(path, "ctl");
1751         if (periph != NULL) {
1752                 /* We've already got a periph, no need to alloc a new one. */
1753                 xpt_path_unlock(path);
1754                 xpt_free_path(path);
1755                 free(lun_softc, M_CTLFE);
1756                 return;
1757         }
1758         lun_softc->parent_softc = bus_softc;
1759         lun_softc->flags |= CTLFE_LUN_WILDCARD;
1760
1761         status = cam_periph_alloc(ctlferegister,
1762                                   ctlfeoninvalidate,
1763                                   ctlfecleanup,
1764                                   ctlfestart,
1765                                   "ctl",
1766                                   CAM_PERIPH_BIO,
1767                                   path,
1768                                   ctlfeasync,
1769                                   0,
1770                                   lun_softc);
1771
1772         if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1773                 const struct cam_status_entry *entry;
1774
1775                 entry = cam_fetch_status_entry(status);
1776                 printf("%s: CAM error %s (%#x) returned from "
1777                        "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1778                        entry->status_text : "Unknown", status);
1779                 free(lun_softc, M_CTLFE);
1780         }
1781
1782         xpt_path_unlock(path);
1783         ctlfe_onoffline(arg, /*online*/ 1);
1784         xpt_free_path(path);
1785 }
1786
1787 static void
1788 ctlfe_offline(void *arg)
1789 {
1790         struct ctlfe_softc *bus_softc;
1791         struct cam_path *path;
1792         cam_status status;
1793         struct cam_periph *periph;
1794
1795         bus_softc = (struct ctlfe_softc *)arg;
1796
1797         ctlfe_onoffline(arg, /*online*/ 0);
1798
1799         /*
1800          * Disable the wildcard LUN for this port now that we have taken
1801          * the port offline.
1802          */
1803         status = xpt_create_path(&path, /*periph*/ NULL,
1804                                  bus_softc->path_id, CAM_TARGET_WILDCARD,
1805                                  CAM_LUN_WILDCARD);
1806         if (status != CAM_REQ_CMP) {
1807                 printf("%s: unable to create path for wildcard periph\n",
1808                        __func__);
1809                 return;
1810         }
1811         xpt_path_lock(path);
1812         if ((periph = cam_periph_find(path, "ctl")) != NULL)
1813                 cam_periph_invalidate(periph);
1814         xpt_path_unlock(path);
1815         xpt_free_path(path);
1816 }
1817
1818 /*
1819  * This will get called to enable a LUN on every bus that is attached to
1820  * CTL.  So we only need to create a path/periph for this particular bus.
1821  */
1822 static int
1823 ctlfe_lun_enable(void *arg, struct ctl_id targ_id, int lun_id)
1824 {
1825         struct ctlfe_softc *bus_softc;
1826         struct ctlfe_lun_softc *softc;
1827         struct cam_path *path;
1828         struct cam_periph *periph;
1829         cam_status status;
1830
1831         bus_softc = (struct ctlfe_softc *)arg;
1832
1833         status = xpt_create_path(&path, /*periph*/ NULL,
1834                                   bus_softc->path_id,
1835                                   targ_id.id, lun_id);
1836         /* XXX KDM need some way to return status to CTL here? */
1837         if (status != CAM_REQ_CMP) {
1838                 printf("%s: could not create path, status %#x\n", __func__,
1839                        status);
1840                 return (1);
1841         }
1842
1843         softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO);
1844         xpt_path_lock(path);
1845         periph = cam_periph_find(path, "ctl");
1846         if (periph != NULL) {
1847                 /* We've already got a periph, no need to alloc a new one. */
1848                 xpt_path_unlock(path);
1849                 xpt_free_path(path);
1850                 free(softc, M_CTLFE);
1851                 return (0);
1852         }
1853         softc->parent_softc = bus_softc;
1854
1855         status = cam_periph_alloc(ctlferegister,
1856                                   ctlfeoninvalidate,
1857                                   ctlfecleanup,
1858                                   ctlfestart,
1859                                   "ctl",
1860                                   CAM_PERIPH_BIO,
1861                                   path,
1862                                   ctlfeasync,
1863                                   0,
1864                                   softc);
1865
1866         if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1867                 const struct cam_status_entry *entry;
1868
1869                 entry = cam_fetch_status_entry(status);
1870                 printf("%s: CAM error %s (%#x) returned from "
1871                        "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1872                        entry->status_text : "Unknown", status);
1873                 free(softc, M_CTLFE);
1874         }
1875
1876         xpt_path_unlock(path);
1877         xpt_free_path(path);
1878         return (0);
1879 }
1880
1881 /*
1882  * This will get called when the user removes a LUN to disable that LUN
1883  * on every bus that is attached to CTL.
1884  */
1885 static int
1886 ctlfe_lun_disable(void *arg, struct ctl_id targ_id, int lun_id)
1887 {
1888         struct ctlfe_softc *softc;
1889         struct ctlfe_lun_softc *lun_softc;
1890
1891         softc = (struct ctlfe_softc *)arg;
1892
1893         mtx_lock(&softc->lun_softc_mtx);
1894         STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) {
1895                 struct cam_path *path;
1896
1897                 path = lun_softc->periph->path;
1898
1899                 if ((xpt_path_target_id(path) == targ_id.id)
1900                  && (xpt_path_lun_id(path) == lun_id)) {
1901                         break;
1902                 }
1903         }
1904         if (lun_softc == NULL) {
1905                 mtx_unlock(&softc->lun_softc_mtx);
1906                 printf("%s: can't find target %d lun %d\n", __func__,
1907                        targ_id.id, lun_id);
1908                 return (1);
1909         }
1910         cam_periph_acquire(lun_softc->periph);
1911         mtx_unlock(&softc->lun_softc_mtx);
1912
1913         cam_periph_lock(lun_softc->periph);
1914         cam_periph_invalidate(lun_softc->periph);
1915         cam_periph_unlock(lun_softc->periph);
1916         cam_periph_release(lun_softc->periph);
1917         return (0);
1918 }
1919
1920 static void
1921 ctlfe_dump_sim(struct cam_sim *sim)
1922 {
1923
1924         printf("%s%d: max tagged openings: %d, max dev openings: %d\n",
1925                sim->sim_name, sim->unit_number,
1926                sim->max_tagged_dev_openings, sim->max_dev_openings);
1927 }
1928
1929 /*
1930  * Assumes that the SIM lock is held.
1931  */
1932 static void
1933 ctlfe_dump_queue(struct ctlfe_lun_softc *softc)
1934 {
1935         struct ccb_hdr *hdr;
1936         struct cam_periph *periph;
1937         int num_items;
1938
1939         periph = softc->periph;
1940         num_items = 0;
1941
1942         TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) {
1943                 union ctl_io *io = hdr->io_ptr;
1944
1945                 num_items++;
1946
1947                 /*
1948                  * Only regular SCSI I/O is put on the work
1949                  * queue, so we can print sense here.  There may be no
1950                  * sense if it's no the queue for a DMA, but this serves to
1951                  * print out the CCB as well.
1952                  *
1953                  * XXX KDM switch this over to scsi_sense_print() when
1954                  * CTL is merged in with CAM.
1955                  */
1956                 ctl_io_error_print(io, NULL);
1957
1958                 /*
1959                  * Print DMA status if we are DMA_QUEUED.
1960                  */
1961                 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
1962                         xpt_print(periph->path,
1963                             "Total %u, Current %u, Resid %u\n",
1964                             io->scsiio.kern_total_len,
1965                             io->scsiio.kern_data_len,
1966                             io->scsiio.kern_data_resid);
1967                 }
1968         }
1969
1970         xpt_print(periph->path, "%d requests total waiting for CCBs\n",
1971                   num_items);
1972         xpt_print(periph->path, "%ju CCBs outstanding (%ju allocated, %ju "
1973                   "freed)\n", (uintmax_t)(softc->ccbs_alloced -
1974                   softc->ccbs_freed), (uintmax_t)softc->ccbs_alloced,
1975                   (uintmax_t)softc->ccbs_freed);
1976         xpt_print(periph->path, "%ju CTIOs outstanding (%ju sent, %ju "
1977                   "returned\n", (uintmax_t)(softc->ctios_sent -
1978                   softc->ctios_returned), softc->ctios_sent,
1979                   softc->ctios_returned);
1980 }
1981
1982 /*
1983  * Datamove/done routine called by CTL.  Put ourselves on the queue to
1984  * receive a CCB from CAM so we can queue the continue I/O request down
1985  * to the adapter.
1986  */
1987 static void
1988 ctlfe_datamove(union ctl_io *io)
1989 {
1990         union ccb *ccb;
1991         struct cam_periph *periph;
1992         struct ctlfe_lun_softc *softc;
1993
1994         KASSERT(io->io_hdr.io_type == CTL_IO_SCSI,
1995             ("Unexpected io_type (%d) in ctlfe_datamove", io->io_hdr.io_type));
1996
1997         ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
1998         periph = xpt_path_periph(ccb->ccb_h.path);
1999         cam_periph_lock(periph);
2000         softc = (struct ctlfe_lun_softc *)periph->softc;
2001         io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
2002         if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)
2003                 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
2004         TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
2005                           periph_links.tqe);
2006         xpt_schedule(periph, /*priority*/ 1);
2007         cam_periph_unlock(periph);
2008 }
2009
2010 static void
2011 ctlfe_done(union ctl_io *io)
2012 {
2013         union ccb *ccb;
2014         struct cam_periph *periph;
2015         struct ctlfe_lun_softc *softc;
2016
2017         ccb = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
2018         periph = xpt_path_periph(ccb->ccb_h.path);
2019         cam_periph_lock(periph);
2020         softc = (struct ctlfe_lun_softc *)periph->softc;
2021
2022         if (io->io_hdr.io_type == CTL_IO_TASK) {
2023                 /*
2024                  * Task management commands don't require any further
2025                  * communication back to the adapter.  Requeue the CCB
2026                  * to the adapter, and free the CTL I/O.
2027                  */
2028                 xpt_print(ccb->ccb_h.path, "%s: returning task I/O "
2029                           "tag %#x seq %#x\n", __func__,
2030                           ccb->cin1.tag_id, ccb->cin1.seq_id);
2031                 /*
2032                  * Send the notify acknowledge down to the SIM, to let it
2033                  * know we processed the task management command.
2034                  */
2035                 ccb->ccb_h.status = CAM_REQ_INPROG;
2036                 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
2037                 xpt_action(ccb);
2038         } else if (io->io_hdr.flags & CTL_FLAG_STATUS_SENT) {
2039                 if (softc->flags & CTLFE_LUN_WILDCARD) {
2040                         ccb->ccb_h.target_id = CAM_TARGET_WILDCARD;
2041                         ccb->ccb_h.target_lun = CAM_LUN_WILDCARD;
2042                 }
2043                 if (periph->flags & CAM_PERIPH_INVALID) {
2044                         ctlfe_free_ccb(periph, ccb);
2045                 } else {
2046                         softc->atios_sent++;
2047                         cam_periph_unlock(periph);
2048                         xpt_action(ccb);
2049                         return;
2050                 }
2051         } else {
2052                 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
2053                 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
2054                                   periph_links.tqe);
2055                 xpt_schedule(periph, /*priority*/ 1);
2056         }
2057
2058         cam_periph_unlock(periph);
2059 }
2060
2061 static void
2062 ctlfe_dump(void)
2063 {
2064         struct ctlfe_softc *bus_softc;
2065         struct ctlfe_lun_softc *lun_softc;
2066
2067         STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) {
2068                 ctlfe_dump_sim(bus_softc->sim);
2069                 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links)
2070                         ctlfe_dump_queue(lun_softc);
2071         }
2072 }