sys/cam/ctl/scsi_ctl.c

   1 /*-
   2  * Copyright (c) 2008, 2009 Silicon Graphics International Corp.
   3  * Copyright (c) 2014-2015 Alexander Motin <mav@FreeBSD.org>
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions, and the following disclaimer,
  11  *    without modification.
  12  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  13  *    substantially similar to the "NO WARRANTY" disclaimer below
  14  *    ("Disclaimer") and any redistribution must be conditioned upon
  15  *    including a substantially similar Disclaimer requirement for further
  16  *    binary redistribution.
  17  *
  18  * NO WARRANTY
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  22  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  27  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  28  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGES.
  30  *
  31  * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/scsi_ctl.c#4 $
  32  */
  33 /*
  34  * Peripheral driver interface between CAM and CTL (CAM Target Layer).
  35  *
  36  * Author: Ken Merry <ken@FreeBSD.org>
  37  */
  38
  39 #include <sys/cdefs.h>
  40 __FBSDID("$FreeBSD$");
  41
  42 #include <sys/param.h>
  43 #include <sys/queue.h>
  44 #include <sys/systm.h>
  45 #include <sys/kernel.h>
  46 #include <sys/lock.h>
  47 #include <sys/mutex.h>
  48 #include <sys/condvar.h>
  49 #include <sys/malloc.h>
  50 #include <sys/bus.h>
  51 #include <sys/endian.h>
  52 #include <sys/sbuf.h>
  53 #include <sys/sysctl.h>
  54 #include <sys/types.h>
  55 #include <sys/systm.h>
  56 #include <sys/taskqueue.h>
  57 #include <machine/bus.h>
  58
  59 #include <cam/cam.h>
  60 #include <cam/cam_ccb.h>
  61 #include <cam/cam_periph.h>
  62 #include <cam/cam_queue.h>
  63 #include <cam/cam_xpt_periph.h>
  64 #include <cam/cam_debug.h>
  65 #include <cam/cam_sim.h>
  66 #include <cam/cam_xpt.h>
  67
  68 #include <cam/scsi/scsi_all.h>
  69 #include <cam/scsi/scsi_message.h>
  70
  71 #include <cam/ctl/ctl_io.h>
  72 #include <cam/ctl/ctl.h>
  73 #include <cam/ctl/ctl_frontend.h>
  74 #include <cam/ctl/ctl_util.h>
  75 #include <cam/ctl/ctl_error.h>
  76
  77 struct ctlfe_softc {
  78         struct ctl_port port;
  79         path_id_t       path_id;
  80         target_id_t     target_id;
  81         uint32_t        hba_misc;
  82         u_int           maxio;
  83         struct cam_sim *sim;
  84         char            port_name[DEV_IDLEN];
  85         struct mtx      lun_softc_mtx;
  86         STAILQ_HEAD(, ctlfe_lun_softc) lun_softc_list;
  87         STAILQ_ENTRY(ctlfe_softc) links;
  88 };
  89
  90 STAILQ_HEAD(, ctlfe_softc) ctlfe_softc_list;
  91 struct mtx ctlfe_list_mtx;
  92 static char ctlfe_mtx_desc[] = "ctlfelist";
  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         int      ctios_sent;            /* Number of active CTIOs */
 104         int      refcount;              /* Number of active xpt_action() */
 105         int      atios_alloced;         /* Number of ATIOs not freed */
 106         int      inots_alloced;         /* Number of INOTs not freed */
 107         struct task     refdrain_task;
 108         TAILQ_HEAD(, ccb_hdr) work_queue;
 109         STAILQ_ENTRY(ctlfe_lun_softc) links;
 110 };
 111
 112 typedef enum {
 113         CTLFE_CMD_NONE          = 0x00,
 114         CTLFE_CMD_PIECEWISE     = 0x01
 115 } ctlfe_cmd_flags;
 116
 117 struct ctlfe_cmd_info {
 118         int cur_transfer_index;
 119         size_t cur_transfer_off;
 120         ctlfe_cmd_flags flags;
 121         /*
 122          * XXX KDM struct bus_dma_segment is 8 bytes on i386, and 16
 123          * bytes on amd64.  So with 32 elements, this is 256 bytes on
 124          * i386 and 512 bytes on amd64.
 125          */
 126 #define CTLFE_MAX_SEGS  32
 127         bus_dma_segment_t cam_sglist[CTLFE_MAX_SEGS];
 128 };
 129
 130 /*
 131  * When we register the adapter/bus, request that this many ctl_ios be
 132  * allocated.  This should be the maximum supported by the adapter, but we
 133  * currently don't have a way to get that back from the path inquiry.
 134  * XXX KDM add that to the path inquiry.
 135  */
 136 #define CTLFE_REQ_CTL_IO        4096
 137 /*
 138  * Number of Accept Target I/O CCBs to allocate and queue down to the
 139  * adapter per LUN.
 140  * XXX KDM should this be controlled by CTL?
 141  */
 142 #define CTLFE_ATIO_PER_LUN      1024
 143 /*
 144  * Number of Immediate Notify CCBs (used for aborts, resets, etc.) to
 145  * allocate and queue down to the adapter per LUN.
 146  * XXX KDM should this be controlled by CTL?
 147  */
 148 #define CTLFE_IN_PER_LUN        1024
 149
 150 /*
 151  * Timeout (in seconds) on CTIO CCB doing DMA or sending status
 152  */
 153 #define CTLFE_TIMEOUT   5
 154
 155 /*
 156  * Turn this on to enable extra debugging prints.
 157  */
 158 #if 0
 159 #define CTLFE_DEBUG
 160 #endif
 161
 162 MALLOC_DEFINE(M_CTLFE, "CAM CTL FE", "CAM CTL FE interface");
 163
 164 #define io_ptr          ppriv_ptr0
 165
 166 /* This is only used in the CTIO */
 167 #define ccb_atio        ppriv_ptr1
 168
 169 #define PRIV_CCB(io)    ((io)->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptrs[0])
 170 #define PRIV_INFO(io)   ((io)->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptrs[1])
 171
 172 static int              ctlfeinitialize(void);
 173 static int              ctlfeshutdown(void);
 174 static periph_init_t    ctlfeperiphinit;
 175 static periph_deinit_t  ctlfeperiphdeinit;
 176 static void             ctlfeasync(void *callback_arg, uint32_t code,
 177                                    struct cam_path *path, void *arg);
 178 static periph_ctor_t    ctlferegister;
 179 static periph_oninv_t   ctlfeoninvalidate;
 180 static periph_dtor_t    ctlfecleanup;
 181 static periph_start_t   ctlfestart;
 182 static void             ctlfedone(struct cam_periph *periph,
 183                                   union ccb *done_ccb);
 184
 185 static void             ctlfe_onoffline(void *arg, int online);
 186 static void             ctlfe_online(void *arg);
 187 static void             ctlfe_offline(void *arg);
 188 static int              ctlfe_lun_enable(void *arg, int lun_id);
 189 static int              ctlfe_lun_disable(void *arg, int lun_id);
 190 static void             ctlfe_dump_sim(struct cam_sim *sim);
 191 static void             ctlfe_dump_queue(struct ctlfe_lun_softc *softc);
 192 static void             ctlfe_datamove(union ctl_io *io);
 193 static void             ctlfe_done(union ctl_io *io);
 194 static void             ctlfe_dump(void);
 195 static void             ctlfe_free_ccb(struct cam_periph *periph,
 196                             union ccb *ccb);
 197 static void             ctlfe_requeue_ccb(struct cam_periph *periph,
 198                             union ccb *ccb, int unlock);
 199
 200 static struct periph_driver ctlfe_driver =
 201 {
 202         ctlfeperiphinit, "ctl",
 203         TAILQ_HEAD_INITIALIZER(ctlfe_driver.units), /*generation*/ 0,
 204         CAM_PERIPH_DRV_EARLY,
 205         ctlfeperiphdeinit
 206 };
 207
 208 static struct ctl_frontend ctlfe_frontend =
 209 {
 210         .name = "camtgt",
 211         .init = ctlfeinitialize,
 212         .fe_dump = ctlfe_dump,
 213         .shutdown = ctlfeshutdown,
 214 };
 215 CTL_FRONTEND_DECLARE(ctlfe, ctlfe_frontend);
 216
 217 static int
 218 ctlfeinitialize(void)
 219 {
 220
 221         STAILQ_INIT(&ctlfe_softc_list);
 222         mtx_init(&ctlfe_list_mtx, ctlfe_mtx_desc, NULL, MTX_DEF);
 223         periphdriver_register(&ctlfe_driver);
 224         return (0);
 225 }
 226
 227 static int
 228 ctlfeshutdown(void)
 229 {
 230         int error;
 231
 232         error = periphdriver_unregister(&ctlfe_driver);
 233         if (error != 0)
 234                 return (error);
 235         mtx_destroy(&ctlfe_list_mtx);
 236         return (0);
 237 }
 238
 239 static void
 240 ctlfeperiphinit(void)
 241 {
 242         cam_status status;
 243
 244         status = xpt_register_async(AC_PATH_REGISTERED | AC_PATH_DEREGISTERED |
 245                                     AC_CONTRACT, ctlfeasync, NULL, NULL);
 246         if (status != CAM_REQ_CMP) {
 247                 printf("ctl: Failed to attach async callback due to CAM "
 248                        "status 0x%x!\n", status);
 249         }
 250 }
 251
 252 static int
 253 ctlfeperiphdeinit(void)
 254 {
 255
 256         /* XXX: It would be good to tear down active ports here. */
 257         if (!TAILQ_EMPTY(&ctlfe_driver.units))
 258                 return (EBUSY);
 259         xpt_register_async(0, ctlfeasync, NULL, NULL);
 260         return (0);
 261 }
 262
 263 static void
 264 ctlfeasync(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 265 {
 266         struct ctlfe_softc *softc;
 267
 268 #ifdef CTLFEDEBUG
 269         printf("%s: entered\n", __func__);
 270 #endif
 271
 272         mtx_lock(&ctlfe_list_mtx);
 273         STAILQ_FOREACH(softc, &ctlfe_softc_list, links) {
 274                 if (softc->path_id == xpt_path_path_id(path))
 275                         break;
 276         }
 277         mtx_unlock(&ctlfe_list_mtx);
 278
 279         /*
 280          * When a new path gets registered, and it is capable of target
 281          * mode, go ahead and attach.  Later on, we may need to be more
 282          * selective, but for now this will be sufficient.
 283          */
 284         switch (code) {
 285         case AC_PATH_REGISTERED: {
 286                 struct ctl_port *port;
 287                 struct ccb_pathinq *cpi;
 288                 int retval;
 289
 290                 cpi = (struct ccb_pathinq *)arg;
 291
 292                 /* Don't attach if it doesn't support target mode */
 293                 if ((cpi->target_sprt & PIT_PROCESSOR) == 0) {
 294 #ifdef CTLFEDEBUG
 295                         printf("%s: SIM %s%d doesn't support target mode\n",
 296                                __func__, cpi->dev_name, cpi->unit_number);
 297 #endif
 298                         break;
 299                 }
 300
 301                 if (softc != NULL) {
 302 #ifdef CTLFEDEBUG
 303                         printf("%s: CTL port for CAM path %u already exists\n",
 304                                __func__, xpt_path_path_id(path));
 305 #endif
 306                         break;
 307                 }
 308
 309                 /*
 310                  * We're in an interrupt context here, so we have to
 311                  * use M_NOWAIT.  Of course this means trouble if we
 312                  * can't allocate memory.
 313                  */
 314                 softc = malloc(sizeof(*softc), M_CTLFE, M_NOWAIT | M_ZERO);
 315                 if (softc == NULL) {
 316                         printf("%s: unable to malloc %zd bytes for softc\n",
 317                                __func__, sizeof(*softc));
 318                         return;
 319                 }
 320
 321                 softc->path_id = cpi->ccb_h.path_id;
 322                 softc->target_id = cpi->initiator_id;
 323                 softc->sim = xpt_path_sim(path);
 324                 softc->hba_misc = cpi->hba_misc;
 325                 if (cpi->maxio != 0)
 326                         softc->maxio = cpi->maxio;
 327                 else
 328                         softc->maxio = DFLTPHYS;
 329                 mtx_init(&softc->lun_softc_mtx, "LUN softc mtx", NULL, MTX_DEF);
 330                 STAILQ_INIT(&softc->lun_softc_list);
 331
 332                 port = &softc->port;
 333                 port->frontend = &ctlfe_frontend;
 334
 335                 /*
 336                  * XXX KDM should we be more accurate here ?
 337                  */
 338                 if (cpi->transport == XPORT_FC)
 339                         port->port_type = CTL_PORT_FC;
 340                 else if (cpi->transport == XPORT_SAS)
 341                         port->port_type = CTL_PORT_SAS;
 342                 else
 343                         port->port_type = CTL_PORT_SCSI;
 344
 345                 /* XXX KDM what should the real number be here? */
 346                 port->num_requested_ctl_io = CTLFE_REQ_CTL_IO;
 347                 snprintf(softc->port_name, sizeof(softc->port_name),
 348                          "%s%d", cpi->dev_name, cpi->unit_number);
 349                 /*
 350                  * XXX KDM it would be nice to allocate storage in the
 351                  * frontend structure itself.
 352                  */
 353                 port->port_name = softc->port_name;
 354                 port->physical_port = cpi->bus_id;
 355                 port->virtual_port = 0;
 356                 port->port_online = ctlfe_online;
 357                 port->port_offline = ctlfe_offline;
 358                 port->onoff_arg = softc;
 359                 port->lun_enable = ctlfe_lun_enable;
 360                 port->lun_disable = ctlfe_lun_disable;
 361                 port->targ_lun_arg = softc;
 362                 port->fe_datamove = ctlfe_datamove;
 363                 port->fe_done = ctlfe_done;
 364                 port->targ_port = -1;
 365
 366                 retval = ctl_port_register(port);
 367                 if (retval != 0) {
 368                         printf("%s: ctl_port_register() failed with "
 369                                "error %d!\n", __func__, retval);
 370                         mtx_destroy(&softc->lun_softc_mtx);
 371                         free(softc, M_CTLFE);
 372                         break;
 373                 } else {
 374                         mtx_lock(&ctlfe_list_mtx);
 375                         STAILQ_INSERT_TAIL(&ctlfe_softc_list, softc, links);
 376                         mtx_unlock(&ctlfe_list_mtx);
 377                 }
 378
 379                 break;
 380         }
 381         case AC_PATH_DEREGISTERED: {
 382
 383                 if (softc != NULL) {
 384                         /*
 385                          * XXX KDM are we certain at this point that there
 386                          * are no outstanding commands for this frontend?
 387                          */
 388                         mtx_lock(&ctlfe_list_mtx);
 389                         STAILQ_REMOVE(&ctlfe_softc_list, softc, ctlfe_softc,
 390                             links);
 391                         mtx_unlock(&ctlfe_list_mtx);
 392                         ctl_port_deregister(&softc->port);
 393                         mtx_destroy(&softc->lun_softc_mtx);
 394                         free(softc, M_CTLFE);
 395                 }
 396                 break;
 397         }
 398         case AC_CONTRACT: {
 399                 struct ac_contract *ac;
 400
 401                 ac = (struct ac_contract *)arg;
 402
 403                 switch (ac->contract_number) {
 404                 case AC_CONTRACT_DEV_CHG: {
 405                         struct ac_device_changed *dev_chg;
 406                         int retval;
 407
 408                         dev_chg = (struct ac_device_changed *)ac->contract_data;
 409
 410                         printf("%s: WWPN %#jx port 0x%06x path %u target %u %s\n",
 411                                __func__, dev_chg->wwpn, dev_chg->port,
 412                                xpt_path_path_id(path), dev_chg->target,
 413                                (dev_chg->arrived == 0) ?  "left" : "arrived");
 414
 415                         if (softc == NULL) {
 416                                 printf("%s: CTL port for CAM path %u not "
 417                                        "found!\n", __func__,
 418                                        xpt_path_path_id(path));
 419                                 break;
 420                         }
 421                         if (dev_chg->arrived != 0) {
 422                                 retval = ctl_add_initiator(&softc->port,
 423                                     dev_chg->target, dev_chg->wwpn, NULL);
 424                         } else {
 425                                 retval = ctl_remove_initiator(&softc->port,
 426                                     dev_chg->target);
 427                         }
 428
 429                         if (retval < 0) {
 430                                 printf("%s: could not %s port %d iid %u "
 431                                        "WWPN %#jx!\n", __func__,
 432                                        (dev_chg->arrived != 0) ? "add" :
 433                                        "remove", softc->port.targ_port,
 434                                        dev_chg->target,
 435                                        (uintmax_t)dev_chg->wwpn);
 436                         }
 437                         break;
 438                 }
 439                 default:
 440                         printf("%s: unsupported contract number %ju\n",
 441                                __func__, (uintmax_t)ac->contract_number);
 442                         break;
 443                 }
 444                 break;
 445         }
 446         default:
 447                 break;
 448         }
 449 }
 450
 451 static cam_status
 452 ctlferegister(struct cam_periph *periph, void *arg)
 453 {
 454         struct ctlfe_softc *bus_softc;
 455         struct ctlfe_lun_softc *softc;
 456         union ccb en_lun_ccb;
 457         cam_status status;
 458         int i;
 459
 460         softc = (struct ctlfe_lun_softc *)arg;
 461         bus_softc = softc->parent_softc;
 462
 463         TAILQ_INIT(&softc->work_queue);
 464         softc->periph = periph;
 465         periph->softc = softc;
 466
 467         xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
 468         en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
 469         en_lun_ccb.cel.grp6_len = 0;
 470         en_lun_ccb.cel.grp7_len = 0;
 471         en_lun_ccb.cel.enable = 1;
 472         xpt_action(&en_lun_ccb);
 473         status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
 474         if (status != CAM_REQ_CMP) {
 475                 xpt_print(periph->path, "%s: Enable LUN failed, status 0x%x\n",
 476                           __func__, en_lun_ccb.ccb_h.status);
 477                 return (status);
 478         }
 479
 480         status = CAM_REQ_CMP;
 481
 482         for (i = 0; i < CTLFE_ATIO_PER_LUN; i++) {
 483                 union ccb *new_ccb;
 484                 union ctl_io *new_io;
 485                 struct ctlfe_cmd_info *cmd_info;
 486
 487                 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
 488                                               M_ZERO|M_NOWAIT);
 489                 if (new_ccb == NULL) {
 490                         status = CAM_RESRC_UNAVAIL;
 491                         break;
 492                 }
 493                 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
 494                 if (new_io == NULL) {
 495                         free(new_ccb, M_CTLFE);
 496                         status = CAM_RESRC_UNAVAIL;
 497                         break;
 498                 }
 499                 cmd_info = malloc(sizeof(*cmd_info), M_CTLFE,
 500                     M_ZERO | M_NOWAIT);
 501                 if (cmd_info == NULL) {
 502                         ctl_free_io(new_io);
 503                         free(new_ccb, M_CTLFE);
 504                         status = CAM_RESRC_UNAVAIL;
 505                         break;
 506                 }
 507                 PRIV_INFO(new_io) = cmd_info;
 508                 softc->atios_alloced++;
 509                 new_ccb->ccb_h.io_ptr = new_io;
 510
 511                 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
 512                 new_ccb->ccb_h.func_code = XPT_ACCEPT_TARGET_IO;
 513                 new_ccb->ccb_h.cbfcnp = ctlfedone;
 514                 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
 515                 xpt_action(new_ccb);
 516                 status = new_ccb->ccb_h.status;
 517                 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
 518                         free(cmd_info, M_CTLFE);
 519                         ctl_free_io(new_io);
 520                         free(new_ccb, M_CTLFE);
 521                         break;
 522                 }
 523         }
 524
 525         status = cam_periph_acquire(periph);
 526         if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 527                 xpt_print(periph->path, "%s: could not acquire reference "
 528                           "count, status = %#x\n", __func__, status);
 529                 return (status);
 530         }
 531
 532         if (i == 0) {
 533                 xpt_print(periph->path, "%s: could not allocate ATIO CCBs, "
 534                           "status 0x%x\n", __func__, status);
 535                 return (CAM_REQ_CMP_ERR);
 536         }
 537
 538         for (i = 0; i < CTLFE_IN_PER_LUN; i++) {
 539                 union ccb *new_ccb;
 540                 union ctl_io *new_io;
 541
 542                 new_ccb = (union ccb *)malloc(sizeof(*new_ccb), M_CTLFE,
 543                                               M_ZERO|M_NOWAIT);
 544                 if (new_ccb == NULL) {
 545                         status = CAM_RESRC_UNAVAIL;
 546                         break;
 547                 }
 548                 new_io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref);
 549                 if (new_io == NULL) {
 550                         free(new_ccb, M_CTLFE);
 551                         status = CAM_RESRC_UNAVAIL;
 552                         break;
 553                 }
 554                 softc->inots_alloced++;
 555                 new_ccb->ccb_h.io_ptr = new_io;
 556
 557                 xpt_setup_ccb(&new_ccb->ccb_h, periph->path, /*priority*/ 1);
 558                 new_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
 559                 new_ccb->ccb_h.cbfcnp = ctlfedone;
 560                 new_ccb->ccb_h.flags |= CAM_UNLOCKED;
 561                 xpt_action(new_ccb);
 562                 status = new_ccb->ccb_h.status;
 563                 if ((status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
 564                         /*
 565                          * Note that we don't free the CCB here.  If the
 566                          * status is not CAM_REQ_INPROG, then we're
 567                          * probably talking to a SIM that says it is
 568                          * target-capable but doesn't support the
 569                          * XPT_IMMEDIATE_NOTIFY CCB.  i.e. it supports the
 570                          * older API.  In that case, it'll call xpt_done()
 571                          * on the CCB, and we need to free it in our done
 572                          * routine as a result.
 573                          */
 574                         break;
 575                 }
 576         }
 577         if ((i == 0)
 578          || (status != CAM_REQ_INPROG)) {
 579                 xpt_print(periph->path, "%s: could not allocate immediate "
 580                           "notify CCBs, status 0x%x\n", __func__, status);
 581                 return (CAM_REQ_CMP_ERR);
 582         }
 583         mtx_lock(&bus_softc->lun_softc_mtx);
 584         STAILQ_INSERT_TAIL(&bus_softc->lun_softc_list, softc, links);
 585         mtx_unlock(&bus_softc->lun_softc_mtx);
 586         return (CAM_REQ_CMP);
 587 }
 588
 589 static void
 590 ctlfeoninvalidate(struct cam_periph *periph)
 591 {
 592         union ccb en_lun_ccb;
 593         cam_status status;
 594         struct ctlfe_softc *bus_softc;
 595         struct ctlfe_lun_softc *softc;
 596
 597         softc = (struct ctlfe_lun_softc *)periph->softc;
 598
 599         xpt_setup_ccb(&en_lun_ccb.ccb_h, periph->path, CAM_PRIORITY_NONE);
 600         en_lun_ccb.ccb_h.func_code = XPT_EN_LUN;
 601         en_lun_ccb.cel.grp6_len = 0;
 602         en_lun_ccb.cel.grp7_len = 0;
 603         en_lun_ccb.cel.enable = 0;
 604         xpt_action(&en_lun_ccb);
 605         status = (en_lun_ccb.ccb_h.status & CAM_STATUS_MASK);
 606         if (status != CAM_REQ_CMP) {
 607                 xpt_print(periph->path, "%s: Disable LUN failed, status 0x%x\n",
 608                           __func__, en_lun_ccb.ccb_h.status);
 609                 /*
 610                  * XXX KDM what do we do now?
 611                  */
 612         }
 613
 614         bus_softc = softc->parent_softc;
 615         mtx_lock(&bus_softc->lun_softc_mtx);
 616         STAILQ_REMOVE(&bus_softc->lun_softc_list, softc, ctlfe_lun_softc, links);
 617         mtx_unlock(&bus_softc->lun_softc_mtx);
 618 }
 619
 620 static void
 621 ctlfecleanup(struct cam_periph *periph)
 622 {
 623         struct ctlfe_lun_softc *softc;
 624
 625         softc = (struct ctlfe_lun_softc *)periph->softc;
 626
 627         KASSERT(softc->ctios_sent == 0, ("%s: ctios_sent %d != 0",
 628             __func__, softc->ctios_sent));
 629         KASSERT(softc->refcount == 0, ("%s: refcount %d != 0",
 630             __func__, softc->refcount));
 631         KASSERT(softc->atios_alloced == 0, ("%s: atios_alloced %d != 0",
 632             __func__, softc->atios_alloced));
 633         KASSERT(softc->inots_alloced == 0, ("%s: inots_alloced %d != 0",
 634             __func__, softc->inots_alloced));
 635
 636         free(softc, M_CTLFE);
 637 }
 638
 639 static void
 640 ctlfedata(struct ctlfe_lun_softc *softc, union ctl_io *io,
 641     ccb_flags *flags, uint8_t **data_ptr, uint32_t *dxfer_len,
 642     u_int16_t *sglist_cnt)
 643 {
 644         struct ctlfe_softc *bus_softc;
 645         struct ctlfe_cmd_info *cmd_info;
 646         struct ctl_sg_entry *ctl_sglist;
 647         bus_dma_segment_t *cam_sglist;
 648         size_t off;
 649         int i, idx;
 650
 651         cmd_info = PRIV_INFO(io);
 652         bus_softc = softc->parent_softc;
 653
 654         /*
 655          * Set the direction, relative to the initiator.
 656          */
 657         *flags &= ~CAM_DIR_MASK;
 658         if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN)
 659                 *flags |= CAM_DIR_IN;
 660         else
 661                 *flags |= CAM_DIR_OUT;
 662
 663         *flags &= ~CAM_DATA_MASK;
 664         idx = cmd_info->cur_transfer_index;
 665         off = cmd_info->cur_transfer_off;
 666         cmd_info->flags &= ~CTLFE_CMD_PIECEWISE;
 667         if (io->scsiio.kern_sg_entries == 0) {  /* No S/G list. */
 668
 669                 /* One time shift for SRR offset. */
 670                 off += io->scsiio.ext_data_filled;
 671                 io->scsiio.ext_data_filled = 0;
 672
 673                 *data_ptr = io->scsiio.kern_data_ptr + off;
 674                 if (io->scsiio.kern_data_len - off <= bus_softc->maxio) {
 675                         *dxfer_len = io->scsiio.kern_data_len - off;
 676                 } else {
 677                         *dxfer_len = bus_softc->maxio;
 678                         cmd_info->cur_transfer_off += bus_softc->maxio;
 679                         cmd_info->flags |= CTLFE_CMD_PIECEWISE;
 680                 }
 681                 *sglist_cnt = 0;
 682
 683                 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
 684                         *flags |= CAM_DATA_PADDR;
 685                 else
 686                         *flags |= CAM_DATA_VADDR;
 687         } else {        /* S/G list with physical or virtual pointers. */
 688                 ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr;
 689
 690                 /* One time shift for SRR offset. */
 691                 while (io->scsiio.ext_data_filled >= ctl_sglist[idx].len - off) {
 692                         io->scsiio.ext_data_filled -= ctl_sglist[idx].len - off;
 693                         idx++;
 694                         off = 0;
 695                 }
 696                 off += io->scsiio.ext_data_filled;
 697                 io->scsiio.ext_data_filled = 0;
 698
 699                 cam_sglist = cmd_info->cam_sglist;
 700                 *dxfer_len = 0;
 701                 for (i = 0; i < io->scsiio.kern_sg_entries - idx; i++) {
 702                         cam_sglist[i].ds_addr = (bus_addr_t)ctl_sglist[i + idx].addr + off;
 703                         if (ctl_sglist[i + idx].len - off <= bus_softc->maxio - *dxfer_len) {
 704                                 cam_sglist[i].ds_len = ctl_sglist[idx + i].len - off;
 705                                 *dxfer_len += cam_sglist[i].ds_len;
 706                         } else {
 707                                 cam_sglist[i].ds_len = bus_softc->maxio - *dxfer_len;
 708                                 cmd_info->cur_transfer_index = idx + i;
 709                                 cmd_info->cur_transfer_off = cam_sglist[i].ds_len + off;
 710                                 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
 711                                 *dxfer_len += cam_sglist[i].ds_len;
 712                                 if (ctl_sglist[i].len != 0)
 713                                         i++;
 714                                 break;
 715                         }
 716                         if (i == (CTLFE_MAX_SEGS - 1) &&
 717                             idx + i < (io->scsiio.kern_sg_entries - 1)) {
 718                                 cmd_info->cur_transfer_index = idx + i + 1;
 719                                 cmd_info->cur_transfer_off = 0;
 720                                 cmd_info->flags |= CTLFE_CMD_PIECEWISE;
 721                                 i++;
 722                                 break;
 723                         }
 724                         off = 0;
 725                 }
 726                 *sglist_cnt = i;
 727                 if (io->io_hdr.flags & CTL_FLAG_BUS_ADDR)
 728                         *flags |= CAM_DATA_SG_PADDR;
 729                 else
 730                         *flags |= CAM_DATA_SG;
 731                 *data_ptr = (uint8_t *)cam_sglist;
 732         }
 733 }
 734
 735 static void
 736 ctlfestart(struct cam_periph *periph, union ccb *start_ccb)
 737 {
 738         struct ctlfe_lun_softc *softc;
 739         struct ctlfe_cmd_info *cmd_info;
 740         struct ccb_hdr *ccb_h;
 741         struct ccb_accept_tio *atio;
 742         struct ccb_scsiio *csio;
 743         uint8_t *data_ptr;
 744         uint32_t dxfer_len;
 745         ccb_flags flags;
 746         union ctl_io *io;
 747         uint8_t scsi_status;
 748
 749         softc = (struct ctlfe_lun_softc *)periph->softc;
 750
 751 next:
 752         ccb_h = TAILQ_FIRST(&softc->work_queue);
 753         if (ccb_h == NULL) {
 754                 xpt_release_ccb(start_ccb);
 755                 return;
 756         }
 757
 758         /* Take the ATIO off the work queue */
 759         TAILQ_REMOVE(&softc->work_queue, ccb_h, periph_links.tqe);
 760         atio = (struct ccb_accept_tio *)ccb_h;
 761         io = (union ctl_io *)ccb_h->io_ptr;
 762         csio = &start_ccb->csio;
 763
 764         flags = atio->ccb_h.flags &
 765                 (CAM_DIS_DISCONNECT|CAM_TAG_ACTION_VALID|CAM_DIR_MASK);
 766         cmd_info = PRIV_INFO(io);
 767         cmd_info->cur_transfer_index = 0;
 768         cmd_info->cur_transfer_off = 0;
 769         cmd_info->flags = 0;
 770
 771         if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
 772                 /*
 773                  * Datamove call, we need to setup the S/G list.
 774                  */
 775                 ctlfedata(softc, io, &flags, &data_ptr, &dxfer_len,
 776                     &csio->sglist_cnt);
 777         } else {
 778                 /*
 779                  * We're done, send status back.
 780                  */
 781                 if ((io->io_hdr.flags & CTL_FLAG_ABORT) &&
 782                     (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) {
 783                         io->io_hdr.flags &= ~CTL_FLAG_STATUS_QUEUED;
 784
 785                         /* Tell the SIM that we've aborted this ATIO */
 786 #ifdef CTLFEDEBUG
 787                         printf("%s: tag %04x abort\n", __func__, atio->tag_id);
 788 #endif
 789                         KASSERT(atio->ccb_h.func_code == XPT_ACCEPT_TARGET_IO,
 790                             ("func_code %#x is not ATIO", atio->ccb_h.func_code));
 791                         start_ccb->ccb_h.func_code = XPT_ABORT;
 792                         start_ccb->cab.abort_ccb = (union ccb *)atio;
 793                         xpt_action(start_ccb);
 794
 795                         ctlfe_requeue_ccb(periph, (union ccb *)atio,
 796                             /* unlock */0);
 797
 798                         /* XPT_ABORT is not queued, so we can take next I/O. */
 799                         goto next;
 800                 }
 801                 data_ptr = NULL;
 802                 dxfer_len = 0;
 803                 csio->sglist_cnt = 0;
 804         }
 805         scsi_status = 0;
 806         if ((io->io_hdr.flags & CTL_FLAG_STATUS_QUEUED) &&
 807             (cmd_info->flags & CTLFE_CMD_PIECEWISE) == 0 &&
 808             ((io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) == 0 ||
 809              io->io_hdr.status == CTL_SUCCESS)) {
 810                 flags |= CAM_SEND_STATUS;
 811                 scsi_status = io->scsiio.scsi_status;
 812                 csio->sense_len = io->scsiio.sense_len;
 813 #ifdef CTLFEDEBUG
 814                 printf("%s: tag %04x status %x\n", __func__,
 815                        atio->tag_id, io->io_hdr.status);
 816 #endif
 817                 if (csio->sense_len != 0) {
 818                         csio->sense_data = io->scsiio.sense_data;
 819                         flags |= CAM_SEND_SENSE;
 820                 }
 821         }
 822
 823 #ifdef CTLFEDEBUG
 824         printf("%s: %s: tag %04x flags %x ptr %p len %u\n", __func__,
 825                (flags & CAM_SEND_STATUS) ? "done" : "datamove",
 826                atio->tag_id, flags, data_ptr, dxfer_len);
 827 #endif
 828
 829         /*
 830          * Valid combinations:
 831          *  - CAM_SEND_STATUS, CAM_DATA_SG = 0, dxfer_len = 0,
 832          *    sglist_cnt = 0
 833          *  - CAM_SEND_STATUS = 0, CAM_DATA_SG = 0, dxfer_len != 0,
 834          *    sglist_cnt = 0
 835          *  - CAM_SEND_STATUS = 0, CAM_DATA_SG, dxfer_len != 0,
 836          *    sglist_cnt != 0
 837          */
 838 #ifdef CTLFEDEBUG
 839         if (((flags & CAM_SEND_STATUS)
 840           && (((flags & CAM_DATA_SG) != 0)
 841            || (dxfer_len != 0)
 842            || (csio->sglist_cnt != 0)))
 843          || (((flags & CAM_SEND_STATUS) == 0)
 844           && (dxfer_len == 0))
 845          || ((flags & CAM_DATA_SG)
 846           && (csio->sglist_cnt == 0))
 847          || (((flags & CAM_DATA_SG) == 0)
 848           && (csio->sglist_cnt != 0))) {
 849                 printf("%s: tag %04x cdb %02x flags %#x dxfer_len "
 850                        "%d sg %u\n", __func__, atio->tag_id,
 851                        atio_cdb_ptr(atio)[0], flags, dxfer_len,
 852                        csio->sglist_cnt);
 853                 printf("%s: tag %04x io status %#x\n", __func__,
 854                        atio->tag_id, io->io_hdr.status);
 855         }
 856 #endif
 857         cam_fill_ctio(csio,
 858                       /*retries*/ 2,
 859                       ctlfedone,
 860                       flags,
 861                       (flags & CAM_TAG_ACTION_VALID) ? MSG_SIMPLE_Q_TAG : 0,
 862                       atio->tag_id,
 863                       atio->init_id,
 864                       scsi_status,
 865                       /*data_ptr*/ data_ptr,
 866                       /*dxfer_len*/ dxfer_len,
 867                       /*timeout*/ CTLFE_TIMEOUT * 1000);
 868         start_ccb->ccb_h.flags |= CAM_UNLOCKED;
 869         start_ccb->ccb_h.ccb_atio = atio;
 870         if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED)
 871                 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
 872         io->io_hdr.flags &= ~(CTL_FLAG_DMA_QUEUED | CTL_FLAG_STATUS_QUEUED);
 873
 874         softc->ctios_sent++;
 875         softc->refcount++;
 876         cam_periph_unlock(periph);
 877         xpt_action(start_ccb);
 878         cam_periph_lock(periph);
 879         softc->refcount--;
 880
 881         /*
 882          * If we still have work to do, ask for another CCB.
 883          */
 884         if (!TAILQ_EMPTY(&softc->work_queue))
 885                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
 886 }
 887
 888 static void
 889 ctlfe_drain(void *context, int pending)
 890 {
 891         struct cam_periph *periph = context;
 892         struct ctlfe_lun_softc *softc = periph->softc;
 893
 894         cam_periph_lock(periph);
 895         while (softc->refcount != 0) {
 896                 cam_periph_sleep(periph, &softc->refcount, PRIBIO,
 897                     "ctlfe_drain", 1);
 898         }
 899         cam_periph_unlock(periph);
 900         cam_periph_release(periph);
 901 }
 902
 903 static void
 904 ctlfe_free_ccb(struct cam_periph *periph, union ccb *ccb)
 905 {
 906         struct ctlfe_lun_softc *softc;
 907         union ctl_io *io;
 908         struct ctlfe_cmd_info *cmd_info;
 909
 910         softc = (struct ctlfe_lun_softc *)periph->softc;
 911         io = ccb->ccb_h.io_ptr;
 912
 913         switch (ccb->ccb_h.func_code) {
 914         case XPT_ACCEPT_TARGET_IO:
 915                 softc->atios_alloced--;
 916                 cmd_info = PRIV_INFO(io);
 917                 free(cmd_info, M_CTLFE);
 918                 break;
 919         case XPT_IMMEDIATE_NOTIFY:
 920         case XPT_NOTIFY_ACKNOWLEDGE:
 921                 softc->inots_alloced--;
 922                 break;
 923         default:
 924                 break;
 925         }
 926
 927         ctl_free_io(io);
 928         free(ccb, M_CTLFE);
 929
 930         KASSERT(softc->atios_alloced >= 0, ("%s: atios_alloced %d < 0",
 931             __func__, softc->atios_alloced));
 932         KASSERT(softc->inots_alloced >= 0, ("%s: inots_alloced %d < 0",
 933             __func__, softc->inots_alloced));
 934
 935         /*
 936          * If we have received all of our CCBs, we can release our
 937          * reference on the peripheral driver.  It will probably go away
 938          * now.
 939          */
 940         if (softc->atios_alloced == 0 && softc->inots_alloced == 0) {
 941                 if (softc->refcount == 0) {
 942                         cam_periph_release_locked(periph);
 943                 } else {
 944                         TASK_INIT(&softc->refdrain_task, 0, ctlfe_drain, periph);
 945                         taskqueue_enqueue(taskqueue_thread,
 946                             &softc->refdrain_task);
 947                 }
 948         }
 949 }
 950
 951 /*
 952  * Send the ATIO/INOT back to the SIM, or free it if periph was invalidated.
 953  */
 954 static void
 955 ctlfe_requeue_ccb(struct cam_periph *periph, union ccb *ccb, int unlock)
 956 {
 957         struct ctlfe_lun_softc *softc;
 958         struct mtx *mtx;
 959
 960         if (periph->flags & CAM_PERIPH_INVALID) {
 961                 mtx = cam_periph_mtx(periph);
 962                 ctlfe_free_ccb(periph, ccb);
 963                 if (unlock)
 964                         mtx_unlock(mtx);
 965                 return;
 966         }
 967         if (unlock)
 968                 cam_periph_unlock(periph);
 969
 970         /*
 971          * For a wildcard attachment, commands can come in with a specific
 972          * target/lun.  Reset the target and LUN fields back to the wildcard
 973          * values before we send them back down to the SIM.
 974          */
 975         softc = (struct ctlfe_lun_softc *)periph->softc;
 976         if (softc->flags & CTLFE_LUN_WILDCARD) {
 977                 ccb->ccb_h.target_id = CAM_TARGET_WILDCARD;
 978                 ccb->ccb_h.target_lun = CAM_LUN_WILDCARD;
 979         }
 980
 981         xpt_action(ccb);
 982 }
 983
 984 static int
 985 ctlfe_adjust_cdb(struct ccb_accept_tio *atio, uint32_t offset)
 986 {
 987         uint64_t lba;
 988         uint32_t num_blocks, nbc;
 989         uint8_t *cmdbyt = atio_cdb_ptr(atio);
 990
 991         nbc = offset >> 9;      /* ASSUMING 512 BYTE BLOCKS */
 992
 993         switch (cmdbyt[0]) {
 994         case READ_6:
 995         case WRITE_6:
 996         {
 997                 struct scsi_rw_6 *cdb = (struct scsi_rw_6 *)cmdbyt;
 998                 lba = scsi_3btoul(cdb->addr);
 999                 lba &= 0x1fffff;
1000                 num_blocks = cdb->length;
1001                 if (num_blocks == 0)
1002                         num_blocks = 256;
1003                 lba += nbc;
1004                 num_blocks -= nbc;
1005                 scsi_ulto3b(lba, cdb->addr);
1006                 cdb->length = num_blocks;
1007                 break;
1008         }
1009         case READ_10:
1010         case WRITE_10:
1011         {
1012                 struct scsi_rw_10 *cdb = (struct scsi_rw_10 *)cmdbyt;
1013                 lba = scsi_4btoul(cdb->addr);
1014                 num_blocks = scsi_2btoul(cdb->length);
1015                 lba += nbc;
1016                 num_blocks -= nbc;
1017                 scsi_ulto4b(lba, cdb->addr);
1018                 scsi_ulto2b(num_blocks, cdb->length);
1019                 break;
1020         }
1021         case READ_12:
1022         case WRITE_12:
1023         {
1024                 struct scsi_rw_12 *cdb = (struct scsi_rw_12 *)cmdbyt;
1025                 lba = scsi_4btoul(cdb->addr);
1026                 num_blocks = scsi_4btoul(cdb->length);
1027                 lba += nbc;
1028                 num_blocks -= nbc;
1029                 scsi_ulto4b(lba, cdb->addr);
1030                 scsi_ulto4b(num_blocks, cdb->length);
1031                 break;
1032         }
1033         case READ_16:
1034         case WRITE_16:
1035         {
1036                 struct scsi_rw_16 *cdb = (struct scsi_rw_16 *)cmdbyt;
1037                 lba = scsi_8btou64(cdb->addr);
1038                 num_blocks = scsi_4btoul(cdb->length);
1039                 lba += nbc;
1040                 num_blocks -= nbc;
1041                 scsi_u64to8b(lba, cdb->addr);
1042                 scsi_ulto4b(num_blocks, cdb->length);
1043                 break;
1044         }
1045         default:
1046                 return -1;
1047         }
1048         return (0);
1049 }
1050
1051 static void
1052 ctlfedone(struct cam_periph *periph, union ccb *done_ccb)
1053 {
1054         struct ctlfe_lun_softc *softc;
1055         struct ctlfe_softc *bus_softc;
1056         struct ctlfe_cmd_info *cmd_info;
1057         struct ccb_accept_tio *atio = NULL;
1058         union ctl_io *io = NULL;
1059         struct mtx *mtx;
1060         cam_status status;
1061
1062         KASSERT((done_ccb->ccb_h.flags & CAM_UNLOCKED) != 0,
1063             ("CCB in ctlfedone() without CAM_UNLOCKED flag"));
1064 #ifdef CTLFE_DEBUG
1065         printf("%s: entered, func_code = %#x\n", __func__,
1066                done_ccb->ccb_h.func_code);
1067 #endif
1068
1069         /*
1070          * At this point CTL has no known use case for device queue freezes.
1071          * In case some SIM think different -- drop its freeze right here.
1072          */
1073         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1074                 cam_release_devq(periph->path,
1075                                  /*relsim_flags*/0,
1076                                  /*reduction*/0,
1077                                  /*timeout*/0,
1078                                  /*getcount_only*/0);
1079                 done_ccb->ccb_h.status &= ~CAM_DEV_QFRZN;
1080         }
1081
1082         softc = (struct ctlfe_lun_softc *)periph->softc;
1083         bus_softc = softc->parent_softc;
1084         mtx = cam_periph_mtx(periph);
1085         mtx_lock(mtx);
1086
1087         switch (done_ccb->ccb_h.func_code) {
1088         case XPT_ACCEPT_TARGET_IO: {
1089
1090                 atio = &done_ccb->atio;
1091                 status = atio->ccb_h.status & CAM_STATUS_MASK;
1092                 if (status != CAM_CDB_RECVD) {
1093                         ctlfe_free_ccb(periph, done_ccb);
1094                         goto out;
1095                 }
1096
1097  resubmit:
1098                 /*
1099                  * Allocate a ctl_io, pass it to CTL, and wait for the
1100                  * datamove or done.
1101                  */
1102                 mtx_unlock(mtx);
1103                 io = done_ccb->ccb_h.io_ptr;
1104                 cmd_info = PRIV_INFO(io);
1105                 ctl_zero_io(io);
1106
1107                 /* Save pointers on both sides */
1108                 PRIV_CCB(io) = done_ccb;
1109                 PRIV_INFO(io) = cmd_info;
1110                 done_ccb->ccb_h.io_ptr = io;
1111
1112                 /*
1113                  * Only SCSI I/O comes down this path, resets, etc. come
1114                  * down the immediate notify path below.
1115                  */
1116                 io->io_hdr.io_type = CTL_IO_SCSI;
1117                 io->io_hdr.nexus.initid = atio->init_id;
1118                 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1119                 if (bus_softc->hba_misc & PIM_EXTLUNS) {
1120                         io->io_hdr.nexus.targ_lun = ctl_decode_lun(
1121                             CAM_EXTLUN_BYTE_SWIZZLE(atio->ccb_h.target_lun));
1122                 } else {
1123                         io->io_hdr.nexus.targ_lun = atio->ccb_h.target_lun;
1124                 }
1125                 io->scsiio.tag_num = atio->tag_id;
1126                 switch (atio->tag_action) {
1127                 case CAM_TAG_ACTION_NONE:
1128                         io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1129                         break;
1130                 case MSG_SIMPLE_TASK:
1131                         io->scsiio.tag_type = CTL_TAG_SIMPLE;
1132                         break;
1133                 case MSG_HEAD_OF_QUEUE_TASK:
1134                         io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE;
1135                         break;
1136                 case MSG_ORDERED_TASK:
1137                         io->scsiio.tag_type = CTL_TAG_ORDERED;
1138                         break;
1139                 case MSG_ACA_TASK:
1140                         io->scsiio.tag_type = CTL_TAG_ACA;
1141                         break;
1142                 default:
1143                         io->scsiio.tag_type = CTL_TAG_UNTAGGED;
1144                         printf("%s: unhandled tag type %#x!!\n", __func__,
1145                                atio->tag_action);
1146                         break;
1147                 }
1148                 if (atio->cdb_len > sizeof(io->scsiio.cdb)) {
1149                         printf("%s: WARNING: CDB len %d > ctl_io space %zd\n",
1150                                __func__, atio->cdb_len, sizeof(io->scsiio.cdb));
1151                 }
1152                 io->scsiio.cdb_len = min(atio->cdb_len, sizeof(io->scsiio.cdb));
1153                 bcopy(atio_cdb_ptr(atio), io->scsiio.cdb, io->scsiio.cdb_len);
1154
1155 #ifdef CTLFEDEBUG
1156                 printf("%s: %u:%u:%u: tag %04x CDB %02x\n", __func__,
1157                         io->io_hdr.nexus.initid,
1158                         io->io_hdr.nexus.targ_port,
1159                         io->io_hdr.nexus.targ_lun,
1160                         io->scsiio.tag_num, io->scsiio.cdb[0]);
1161 #endif
1162
1163                 ctl_queue(io);
1164                 return;
1165         }
1166         case XPT_CONT_TARGET_IO: {
1167                 int srr = 0;
1168                 uint32_t srr_off = 0;
1169
1170                 atio = (struct ccb_accept_tio *)done_ccb->ccb_h.ccb_atio;
1171                 io = (union ctl_io *)atio->ccb_h.io_ptr;
1172
1173                 softc->ctios_sent--;
1174 #ifdef CTLFEDEBUG
1175                 printf("%s: got XPT_CONT_TARGET_IO tag %#x flags %#x\n",
1176                        __func__, atio->tag_id, done_ccb->ccb_h.flags);
1177 #endif
1178                 /*
1179                  * Handle SRR case were the data pointer is pushed back hack
1180                  */
1181                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_MESSAGE_RECV
1182                     && done_ccb->csio.msg_ptr != NULL
1183                     && done_ccb->csio.msg_ptr[0] == MSG_EXTENDED
1184                     && done_ccb->csio.msg_ptr[1] == 5
1185                     && done_ccb->csio.msg_ptr[2] == 0) {
1186                         srr = 1;
1187                         srr_off =
1188                             (done_ccb->csio.msg_ptr[3] << 24)
1189                             | (done_ccb->csio.msg_ptr[4] << 16)
1190                             | (done_ccb->csio.msg_ptr[5] << 8)
1191                             | (done_ccb->csio.msg_ptr[6]);
1192                 }
1193
1194                 /*
1195                  * If we have an SRR and we're still sending data, we
1196                  * should be able to adjust offsets and cycle again.
1197                  * It is possible only if offset is from this datamove.
1198                  */
1199                 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) &&
1200                     srr_off >= io->scsiio.kern_rel_offset &&
1201                     srr_off < io->scsiio.kern_rel_offset +
1202                      io->scsiio.kern_data_len) {
1203                         io->scsiio.kern_data_resid =
1204                             io->scsiio.kern_rel_offset +
1205                             io->scsiio.kern_data_len - srr_off;
1206                         io->scsiio.ext_data_filled = srr_off;
1207                         io->scsiio.io_hdr.status = CTL_STATUS_NONE;
1208                         io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
1209                         xpt_release_ccb(done_ccb);
1210                         TAILQ_INSERT_HEAD(&softc->work_queue, &atio->ccb_h,
1211                                           periph_links.tqe);
1212                         xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1213                         break;
1214                 }
1215
1216                 /*
1217                  * If status was being sent, the back end data is now history.
1218                  * Hack it up and resubmit a new command with the CDB adjusted.
1219                  * If the SIM does the right thing, all of the resid math
1220                  * should work.
1221                  */
1222                 if (srr && (io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1223                         xpt_release_ccb(done_ccb);
1224                         if (ctlfe_adjust_cdb(atio, srr_off) == 0) {
1225                                 done_ccb = (union ccb *)atio;
1226                                 goto resubmit;
1227                         }
1228                         /*
1229                          * Fall through to doom....
1230                          */
1231                 }
1232
1233                 if ((done_ccb->ccb_h.flags & CAM_SEND_STATUS) &&
1234                     (done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)
1235                         io->io_hdr.flags |= CTL_FLAG_STATUS_SENT;
1236
1237                 /*
1238                  * If we were sending status back to the initiator, free up
1239                  * resources.  If we were doing a datamove, call the
1240                  * datamove done routine.
1241                  */
1242                 if ((io->io_hdr.flags & CTL_FLAG_DMA_INPROG) == 0) {
1243                         /*
1244                          * If we asked to send sense data but it wasn't sent,
1245                          * queue the I/O back to CTL for later REQUEST SENSE.
1246                          */
1247                         if ((done_ccb->ccb_h.flags & CAM_SEND_SENSE) != 0 &&
1248                             (done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP &&
1249                             (done_ccb->ccb_h.status & CAM_SENT_SENSE) == 0 &&
1250                             (io = ctl_alloc_io_nowait(bus_softc->port.ctl_pool_ref)) != NULL) {
1251                                 PRIV_INFO(io) = PRIV_INFO(
1252                                     (union ctl_io *)atio->ccb_h.io_ptr);
1253                                 ctl_queue_sense(atio->ccb_h.io_ptr);
1254                                 atio->ccb_h.io_ptr = io;
1255                         }
1256
1257                         /* Abort ATIO if CTIO sending status has failed. */
1258                         if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) !=
1259                             CAM_REQ_CMP) {
1260                                 done_ccb->ccb_h.func_code = XPT_ABORT;
1261                                 done_ccb->cab.abort_ccb = (union ccb *)atio;
1262                                 xpt_action(done_ccb);
1263                         }
1264
1265                         xpt_release_ccb(done_ccb);
1266                         ctlfe_requeue_ccb(periph, (union ccb *)atio,
1267                             /* unlock */1);
1268                         return;
1269                 } else {
1270                         struct ctlfe_cmd_info *cmd_info;
1271                         struct ccb_scsiio *csio;
1272
1273                         csio = &done_ccb->csio;
1274                         cmd_info = PRIV_INFO(io);
1275
1276                         io->io_hdr.flags &= ~CTL_FLAG_DMA_INPROG;
1277
1278                         /*
1279                          * Translate CAM status to CTL status.  Success
1280                          * does not change the overall, ctl_io status.  In
1281                          * that case we just set port_status to 0.  If we
1282                          * have a failure, though, set a data phase error
1283                          * for the overall ctl_io.
1284                          */
1285                         switch (done_ccb->ccb_h.status & CAM_STATUS_MASK) {
1286                         case CAM_REQ_CMP:
1287                                 io->scsiio.kern_data_resid -=
1288                                     csio->dxfer_len - csio->resid;
1289                                 io->io_hdr.port_status = 0;
1290                                 break;
1291                         default:
1292                                 /*
1293                                  * XXX KDM we probably need to figure out a
1294                                  * standard set of errors that the SIM
1295                                  * drivers should return in the event of a
1296                                  * data transfer failure.  A data phase
1297                                  * error will at least point the user to a
1298                                  * data transfer error of some sort.
1299                                  * Hopefully the SIM printed out some
1300                                  * additional information to give the user
1301                                  * a clue what happened.
1302                                  */
1303                                 io->io_hdr.port_status = 0xbad1;
1304                                 ctl_set_data_phase_error(&io->scsiio);
1305                                 /*
1306                                  * XXX KDM figure out residual.
1307                                  */
1308                                 break;
1309                         }
1310                         /*
1311                          * If we had to break this S/G list into multiple
1312                          * pieces, figure out where we are in the list, and
1313                          * continue sending pieces if necessary.
1314                          */
1315                         if ((cmd_info->flags & CTLFE_CMD_PIECEWISE) &&
1316                             io->io_hdr.port_status == 0 && csio->resid == 0) {
1317                                 ccb_flags flags;
1318                                 uint8_t *data_ptr;
1319                                 uint32_t dxfer_len;
1320
1321                                 flags = atio->ccb_h.flags &
1322                                         (CAM_DIS_DISCONNECT|
1323                                          CAM_TAG_ACTION_VALID);
1324
1325                                 ctlfedata(softc, io, &flags, &data_ptr,
1326                                     &dxfer_len, &csio->sglist_cnt);
1327
1328                                 if (((flags & CAM_SEND_STATUS) == 0)
1329                                  && (dxfer_len == 0)) {
1330                                         printf("%s: tag %04x no status or "
1331                                                "len cdb = %02x\n", __func__,
1332                                                atio->tag_id,
1333                                                atio_cdb_ptr(atio)[0]);
1334                                         printf("%s: tag %04x io status %#x\n",
1335                                                __func__, atio->tag_id,
1336                                                io->io_hdr.status);
1337                                 }
1338
1339                                 cam_fill_ctio(csio,
1340                                               /*retries*/ 2,
1341                                               ctlfedone,
1342                                               flags,
1343                                               (flags & CAM_TAG_ACTION_VALID) ?
1344                                                MSG_SIMPLE_Q_TAG : 0,
1345                                               atio->tag_id,
1346                                               atio->init_id,
1347                                               0,
1348                                               /*data_ptr*/ data_ptr,
1349                                               /*dxfer_len*/ dxfer_len,
1350                                               CTLFE_TIMEOUT * 1000);
1351
1352                                 csio->ccb_h.flags |= CAM_UNLOCKED;
1353                                 csio->resid = 0;
1354                                 csio->ccb_h.ccb_atio = atio;
1355                                 io->io_hdr.flags |= CTL_FLAG_DMA_INPROG;
1356                                 softc->ctios_sent++;
1357                                 mtx_unlock(mtx);
1358                                 xpt_action((union ccb *)csio);
1359                         } else {
1360                                 /*
1361                                  * Release the CTIO.  The ATIO will be sent back
1362                                  * down to the SIM once we send status.
1363                                  */
1364                                 xpt_release_ccb(done_ccb);
1365                                 mtx_unlock(mtx);
1366
1367                                 /* Call the backend move done callback */
1368                                 io->scsiio.be_move_done(io);
1369                         }
1370                         return;
1371                 }
1372                 break;
1373         }
1374         case XPT_IMMEDIATE_NOTIFY: {
1375                 union ctl_io *io;
1376                 struct ccb_immediate_notify *inot;
1377                 int send_ctl_io;
1378
1379                 inot = &done_ccb->cin1;
1380                 io = done_ccb->ccb_h.io_ptr;
1381                 ctl_zero_io(io);
1382
1383                 send_ctl_io = 1;
1384
1385                 io->io_hdr.io_type = CTL_IO_TASK;
1386                 PRIV_CCB(io) = done_ccb;
1387                 inot->ccb_h.io_ptr = io;
1388                 io->io_hdr.nexus.initid = inot->initiator_id;
1389                 io->io_hdr.nexus.targ_port = bus_softc->port.targ_port;
1390                 if (bus_softc->hba_misc & PIM_EXTLUNS) {
1391                         io->io_hdr.nexus.targ_lun = ctl_decode_lun(
1392                             CAM_EXTLUN_BYTE_SWIZZLE(inot->ccb_h.target_lun));
1393                 } else {
1394                         io->io_hdr.nexus.targ_lun = inot->ccb_h.target_lun;
1395                 }
1396                 /* XXX KDM should this be the tag_id? */
1397                 io->taskio.tag_num = inot->seq_id;
1398
1399                 status = inot->ccb_h.status & CAM_STATUS_MASK;
1400                 switch (status) {
1401                 case CAM_SCSI_BUS_RESET:
1402                         io->taskio.task_action = CTL_TASK_BUS_RESET;
1403                         break;
1404                 case CAM_BDR_SENT:
1405                         io->taskio.task_action = CTL_TASK_TARGET_RESET;
1406                         break;
1407                 case CAM_MESSAGE_RECV:
1408                         switch (inot->arg) {
1409                         case MSG_ABORT_TASK_SET:
1410                                 io->taskio.task_action =
1411                                     CTL_TASK_ABORT_TASK_SET;
1412                                 break;
1413                         case MSG_TARGET_RESET:
1414                                 io->taskio.task_action = CTL_TASK_TARGET_RESET;
1415                                 break;
1416                         case MSG_ABORT_TASK:
1417                                 io->taskio.task_action = CTL_TASK_ABORT_TASK;
1418                                 break;
1419                         case MSG_LOGICAL_UNIT_RESET:
1420                                 io->taskio.task_action = CTL_TASK_LUN_RESET;
1421                                 break;
1422                         case MSG_CLEAR_TASK_SET:
1423                                 io->taskio.task_action =
1424                                     CTL_TASK_CLEAR_TASK_SET;
1425                                 break;
1426                         case MSG_CLEAR_ACA:
1427                                 io->taskio.task_action = CTL_TASK_CLEAR_ACA;
1428                                 break;
1429                         case MSG_QUERY_TASK:
1430                                 io->taskio.task_action = CTL_TASK_QUERY_TASK;
1431                                 break;
1432                         case MSG_QUERY_TASK_SET:
1433                                 io->taskio.task_action =
1434                                     CTL_TASK_QUERY_TASK_SET;
1435                                 break;
1436                         case MSG_QUERY_ASYNC_EVENT:
1437                                 io->taskio.task_action =
1438                                     CTL_TASK_QUERY_ASYNC_EVENT;
1439                                 break;
1440                         case MSG_NOOP:
1441                                 send_ctl_io = 0;
1442                                 break;
1443                         default:
1444                                 xpt_print(periph->path,
1445                                     "%s: unsupported INOT message 0x%x\n",
1446                                     __func__, inot->arg);
1447                                 send_ctl_io = 0;
1448                                 break;
1449                         }
1450                         break;
1451                 default:
1452                         xpt_print(periph->path,
1453                             "%s: unsupported INOT status 0x%x\n",
1454                             __func__, status);
1455                         /* FALLTHROUGH */
1456                 case CAM_REQ_ABORTED:
1457                 case CAM_REQ_INVALID:
1458                 case CAM_DEV_NOT_THERE:
1459                 case CAM_PROVIDE_FAIL:
1460                         ctlfe_free_ccb(periph, done_ccb);
1461                         goto out;
1462                 }
1463                 if (send_ctl_io != 0) {
1464                         ctl_queue(io);
1465                 } else {
1466                         done_ccb->ccb_h.status = CAM_REQ_INPROG;
1467                         done_ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1468                         xpt_action(done_ccb);
1469                 }
1470                 break;
1471         }
1472         case XPT_NOTIFY_ACKNOWLEDGE:
1473                 /* Queue this back down to the SIM as an immediate notify. */
1474                 done_ccb->ccb_h.status = CAM_REQ_INPROG;
1475                 done_ccb->ccb_h.func_code = XPT_IMMEDIATE_NOTIFY;
1476                 ctlfe_requeue_ccb(periph, done_ccb, /* unlock */1);
1477                 return;
1478         case XPT_SET_SIM_KNOB:
1479         case XPT_GET_SIM_KNOB:
1480         case XPT_GET_SIM_KNOB_OLD:
1481                 break;
1482         default:
1483                 panic("%s: unexpected CCB type %#x", __func__,
1484                       done_ccb->ccb_h.func_code);
1485                 break;
1486         }
1487
1488 out:
1489         mtx_unlock(mtx);
1490 }
1491
1492 static void
1493 ctlfe_onoffline(void *arg, int online)
1494 {
1495         struct ctlfe_softc *bus_softc;
1496         union ccb *ccb;
1497         cam_status status;
1498         struct cam_path *path;
1499         int set_wwnn;
1500
1501         bus_softc = (struct ctlfe_softc *)arg;
1502
1503         set_wwnn = 0;
1504
1505         status = xpt_create_path(&path, /*periph*/ NULL, bus_softc->path_id,
1506                 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1507         if (status != CAM_REQ_CMP) {
1508                 printf("%s: unable to create path!\n", __func__);
1509                 return;
1510         }
1511         ccb = xpt_alloc_ccb();
1512         xpt_setup_ccb(&ccb->ccb_h, path, CAM_PRIORITY_NONE);
1513         ccb->ccb_h.func_code = XPT_GET_SIM_KNOB;
1514         xpt_action(ccb);
1515
1516         /*
1517          * Copan WWN format:
1518          *
1519          * Bits 63-60:  0x5             NAA, IEEE registered name
1520          * Bits 59-36:  0x000ED5        IEEE Company name assigned to Copan
1521          * Bits 35-12:                  Copan SSN (Sequential Serial Number)
1522          * Bits 11-8:                   Type of port:
1523          *                                      1 == N-Port
1524          *                                      2 == F-Port
1525          *                                      3 == NL-Port
1526          * Bits 7-0:                    0 == Node Name, >0 == Port Number
1527          */
1528         if (online != 0) {
1529                 if ((ccb->knob.xport_specific.valid & KNOB_VALID_ADDRESS) != 0){
1530
1531                         printf("%s: %s current WWNN %#jx\n", __func__,
1532                                bus_softc->port_name,
1533                                ccb->knob.xport_specific.fc.wwnn);
1534                         printf("%s: %s current WWPN %#jx\n", __func__,
1535                                bus_softc->port_name,
1536                                ccb->knob.xport_specific.fc.wwpn);
1537
1538                         /*
1539                          * If the user has specified a WWNN/WWPN, send them
1540                          * down to the SIM.  Otherwise, record what the SIM
1541                          * has reported.
1542                          */
1543                         if (bus_softc->port.wwnn != 0 && bus_softc->port.wwnn
1544                             != ccb->knob.xport_specific.fc.wwnn) {
1545                                 ccb->knob.xport_specific.fc.wwnn =
1546                                     bus_softc->port.wwnn;
1547                                 set_wwnn = 1;
1548                         } else {
1549                                 ctl_port_set_wwns(&bus_softc->port,
1550                                     true, ccb->knob.xport_specific.fc.wwnn,
1551                                     false, 0);
1552                         }
1553                         if (bus_softc->port.wwpn != 0 && bus_softc->port.wwpn
1554                              != ccb->knob.xport_specific.fc.wwpn) {
1555                                 ccb->knob.xport_specific.fc.wwpn =
1556                                     bus_softc->port.wwpn;
1557                                 set_wwnn = 1;
1558                         } else {
1559                                 ctl_port_set_wwns(&bus_softc->port,
1560                                     false, 0,
1561                                     true, ccb->knob.xport_specific.fc.wwpn);
1562                         }
1563
1564
1565                         if (set_wwnn != 0) {
1566                                 printf("%s: %s new WWNN %#jx\n", __func__,
1567                                        bus_softc->port_name,
1568                                 ccb->knob.xport_specific.fc.wwnn);
1569                                 printf("%s: %s new WWPN %#jx\n", __func__,
1570                                        bus_softc->port_name,
1571                                        ccb->knob.xport_specific.fc.wwpn);
1572                         }
1573                 } else {
1574                         printf("%s: %s has no valid WWNN/WWPN\n", __func__,
1575                                bus_softc->port_name);
1576                 }
1577         }
1578         ccb->ccb_h.func_code = XPT_SET_SIM_KNOB;
1579         ccb->knob.xport_specific.valid = KNOB_VALID_ROLE;
1580         if (set_wwnn != 0)
1581                 ccb->knob.xport_specific.valid |= KNOB_VALID_ADDRESS;
1582
1583         if (online != 0)
1584                 ccb->knob.xport_specific.fc.role |= KNOB_ROLE_TARGET;
1585         else
1586                 ccb->knob.xport_specific.fc.role &= ~KNOB_ROLE_TARGET;
1587
1588         xpt_action(ccb);
1589
1590         if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1591                 printf("%s: SIM %s (path id %d) target %s failed with "
1592                        "status %#x\n",
1593                        __func__, bus_softc->port_name, bus_softc->path_id,
1594                        (online != 0) ? "enable" : "disable",
1595                        ccb->ccb_h.status);
1596         } else {
1597                 printf("%s: SIM %s (path id %d) target %s succeeded\n",
1598                        __func__, bus_softc->port_name, bus_softc->path_id,
1599                        (online != 0) ? "enable" : "disable");
1600         }
1601
1602         xpt_free_path(path);
1603         xpt_free_ccb(ccb);
1604 }
1605
1606 static void
1607 ctlfe_online(void *arg)
1608 {
1609         struct ctlfe_softc *bus_softc;
1610         struct cam_path *path;
1611         cam_status status;
1612         struct ctlfe_lun_softc *lun_softc;
1613         struct cam_periph *periph;
1614
1615         bus_softc = (struct ctlfe_softc *)arg;
1616
1617         /*
1618          * Create the wildcard LUN before bringing the port online.
1619          */
1620         status = xpt_create_path(&path, /*periph*/ NULL,
1621                                  bus_softc->path_id, CAM_TARGET_WILDCARD,
1622                                  CAM_LUN_WILDCARD);
1623         if (status != CAM_REQ_CMP) {
1624                 printf("%s: unable to create path for wildcard periph\n",
1625                                 __func__);
1626                 return;
1627         }
1628
1629         lun_softc = malloc(sizeof(*lun_softc), M_CTLFE, M_WAITOK | M_ZERO);
1630
1631         xpt_path_lock(path);
1632         periph = cam_periph_find(path, "ctl");
1633         if (periph != NULL) {
1634                 /* We've already got a periph, no need to alloc a new one. */
1635                 xpt_path_unlock(path);
1636                 xpt_free_path(path);
1637                 free(lun_softc, M_CTLFE);
1638                 return;
1639         }
1640         lun_softc->parent_softc = bus_softc;
1641         lun_softc->flags |= CTLFE_LUN_WILDCARD;
1642
1643         status = cam_periph_alloc(ctlferegister,
1644                                   ctlfeoninvalidate,
1645                                   ctlfecleanup,
1646                                   ctlfestart,
1647                                   "ctl",
1648                                   CAM_PERIPH_BIO,
1649                                   path,
1650                                   ctlfeasync,
1651                                   0,
1652                                   lun_softc);
1653
1654         if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1655                 const struct cam_status_entry *entry;
1656
1657                 entry = cam_fetch_status_entry(status);
1658                 printf("%s: CAM error %s (%#x) returned from "
1659                        "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1660                        entry->status_text : "Unknown", status);
1661                 free(lun_softc, M_CTLFE);
1662         }
1663
1664         xpt_path_unlock(path);
1665         ctlfe_onoffline(arg, /*online*/ 1);
1666         xpt_free_path(path);
1667 }
1668
1669 static void
1670 ctlfe_offline(void *arg)
1671 {
1672         struct ctlfe_softc *bus_softc;
1673         struct cam_path *path;
1674         cam_status status;
1675         struct cam_periph *periph;
1676
1677         bus_softc = (struct ctlfe_softc *)arg;
1678
1679         ctlfe_onoffline(arg, /*online*/ 0);
1680
1681         /*
1682          * Disable the wildcard LUN for this port now that we have taken
1683          * the port offline.
1684          */
1685         status = xpt_create_path(&path, /*periph*/ NULL,
1686                                  bus_softc->path_id, CAM_TARGET_WILDCARD,
1687                                  CAM_LUN_WILDCARD);
1688         if (status != CAM_REQ_CMP) {
1689                 printf("%s: unable to create path for wildcard periph\n",
1690                        __func__);
1691                 return;
1692         }
1693         xpt_path_lock(path);
1694         if ((periph = cam_periph_find(path, "ctl")) != NULL)
1695                 cam_periph_invalidate(periph);
1696         xpt_path_unlock(path);
1697         xpt_free_path(path);
1698 }
1699
1700 /*
1701  * This will get called to enable a LUN on every bus that is attached to
1702  * CTL.  So we only need to create a path/periph for this particular bus.
1703  */
1704 static int
1705 ctlfe_lun_enable(void *arg, int lun_id)
1706 {
1707         struct ctlfe_softc *bus_softc;
1708         struct ctlfe_lun_softc *softc;
1709         struct cam_path *path;
1710         struct cam_periph *periph;
1711         cam_status status;
1712
1713         bus_softc = (struct ctlfe_softc *)arg;
1714         if (bus_softc->hba_misc & PIM_EXTLUNS)
1715                 lun_id = CAM_EXTLUN_BYTE_SWIZZLE(ctl_encode_lun(lun_id));
1716
1717         status = xpt_create_path(&path, /*periph*/ NULL,
1718             bus_softc->path_id, bus_softc->target_id, lun_id);
1719         /* XXX KDM need some way to return status to CTL here? */
1720         if (status != CAM_REQ_CMP) {
1721                 printf("%s: could not create path, status %#x\n", __func__,
1722                        status);
1723                 return (1);
1724         }
1725
1726         softc = malloc(sizeof(*softc), M_CTLFE, M_WAITOK | M_ZERO);
1727         xpt_path_lock(path);
1728         periph = cam_periph_find(path, "ctl");
1729         if (periph != NULL) {
1730                 /* We've already got a periph, no need to alloc a new one. */
1731                 xpt_path_unlock(path);
1732                 xpt_free_path(path);
1733                 free(softc, M_CTLFE);
1734                 return (0);
1735         }
1736         softc->parent_softc = bus_softc;
1737
1738         status = cam_periph_alloc(ctlferegister,
1739                                   ctlfeoninvalidate,
1740                                   ctlfecleanup,
1741                                   ctlfestart,
1742                                   "ctl",
1743                                   CAM_PERIPH_BIO,
1744                                   path,
1745                                   ctlfeasync,
1746                                   0,
1747                                   softc);
1748
1749         if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1750                 const struct cam_status_entry *entry;
1751
1752                 entry = cam_fetch_status_entry(status);
1753                 printf("%s: CAM error %s (%#x) returned from "
1754                        "cam_periph_alloc()\n", __func__, (entry != NULL) ?
1755                        entry->status_text : "Unknown", status);
1756                 free(softc, M_CTLFE);
1757         }
1758
1759         xpt_path_unlock(path);
1760         xpt_free_path(path);
1761         return (0);
1762 }
1763
1764 /*
1765  * This will get called when the user removes a LUN to disable that LUN
1766  * on every bus that is attached to CTL.
1767  */
1768 static int
1769 ctlfe_lun_disable(void *arg, int lun_id)
1770 {
1771         struct ctlfe_softc *softc;
1772         struct ctlfe_lun_softc *lun_softc;
1773
1774         softc = (struct ctlfe_softc *)arg;
1775         if (softc->hba_misc & PIM_EXTLUNS)
1776                 lun_id = CAM_EXTLUN_BYTE_SWIZZLE(ctl_encode_lun(lun_id));
1777
1778         mtx_lock(&softc->lun_softc_mtx);
1779         STAILQ_FOREACH(lun_softc, &softc->lun_softc_list, links) {
1780                 struct cam_path *path;
1781
1782                 path = lun_softc->periph->path;
1783
1784                 if ((xpt_path_target_id(path) == softc->target_id)
1785                  && (xpt_path_lun_id(path) == lun_id)) {
1786                         break;
1787                 }
1788         }
1789         if (lun_softc == NULL) {
1790                 mtx_unlock(&softc->lun_softc_mtx);
1791                 printf("%s: can't find lun %d\n", __func__, lun_id);
1792                 return (1);
1793         }
1794         cam_periph_acquire(lun_softc->periph);
1795         mtx_unlock(&softc->lun_softc_mtx);
1796
1797         cam_periph_lock(lun_softc->periph);
1798         cam_periph_invalidate(lun_softc->periph);
1799         cam_periph_unlock(lun_softc->periph);
1800         cam_periph_release(lun_softc->periph);
1801         return (0);
1802 }
1803
1804 static void
1805 ctlfe_dump_sim(struct cam_sim *sim)
1806 {
1807
1808         printf("%s%d: max tagged openings: %d, max dev openings: %d\n",
1809                sim->sim_name, sim->unit_number,
1810                sim->max_tagged_dev_openings, sim->max_dev_openings);
1811 }
1812
1813 /*
1814  * Assumes that the SIM lock is held.
1815  */
1816 static void
1817 ctlfe_dump_queue(struct ctlfe_lun_softc *softc)
1818 {
1819         struct ccb_hdr *hdr;
1820         struct cam_periph *periph;
1821         int num_items;
1822
1823         periph = softc->periph;
1824         num_items = 0;
1825
1826         TAILQ_FOREACH(hdr, &softc->work_queue, periph_links.tqe) {
1827                 union ctl_io *io = hdr->io_ptr;
1828
1829                 num_items++;
1830
1831                 /*
1832                  * Only regular SCSI I/O is put on the work
1833                  * queue, so we can print sense here.  There may be no
1834                  * sense if it's no the queue for a DMA, but this serves to
1835                  * print out the CCB as well.
1836                  *
1837                  * XXX KDM switch this over to scsi_sense_print() when
1838                  * CTL is merged in with CAM.
1839                  */
1840                 ctl_io_error_print(io, NULL);
1841
1842                 /*
1843                  * Print DMA status if we are DMA_QUEUED.
1844                  */
1845                 if (io->io_hdr.flags & CTL_FLAG_DMA_QUEUED) {
1846                         xpt_print(periph->path,
1847                             "Total %u, Current %u, Resid %u\n",
1848                             io->scsiio.kern_total_len,
1849                             io->scsiio.kern_data_len,
1850                             io->scsiio.kern_data_resid);
1851                 }
1852         }
1853
1854         xpt_print(periph->path, "%d requests waiting for CCBs\n", num_items);
1855         xpt_print(periph->path, "%d CTIOs outstanding\n", softc->ctios_sent);
1856 }
1857
1858 /*
1859  * Datamove/done routine called by CTL.  Put ourselves on the queue to
1860  * receive a CCB from CAM so we can queue the continue I/O request down
1861  * to the adapter.
1862  */
1863 static void
1864 ctlfe_datamove(union ctl_io *io)
1865 {
1866         union ccb *ccb;
1867         struct cam_periph *periph;
1868         struct ctlfe_lun_softc *softc;
1869
1870         KASSERT(io->io_hdr.io_type == CTL_IO_SCSI,
1871             ("Unexpected io_type (%d) in ctlfe_datamove", io->io_hdr.io_type));
1872
1873         io->scsiio.ext_data_filled = 0;
1874         ccb = PRIV_CCB(io);
1875         periph = xpt_path_periph(ccb->ccb_h.path);
1876         cam_periph_lock(periph);
1877         softc = (struct ctlfe_lun_softc *)periph->softc;
1878         io->io_hdr.flags |= CTL_FLAG_DMA_QUEUED;
1879         if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)
1880                 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
1881         TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
1882                           periph_links.tqe);
1883         xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1884         cam_periph_unlock(periph);
1885 }
1886
1887 static void
1888 ctlfe_done(union ctl_io *io)
1889 {
1890         union ccb *ccb;
1891         struct cam_periph *periph;
1892         struct ctlfe_lun_softc *softc;
1893
1894         ccb = PRIV_CCB(io);
1895         periph = xpt_path_periph(ccb->ccb_h.path);
1896         cam_periph_lock(periph);
1897         softc = (struct ctlfe_lun_softc *)periph->softc;
1898
1899         if (io->io_hdr.io_type == CTL_IO_TASK) {
1900                 /*
1901                  * Send the notify acknowledge down to the SIM, to let it
1902                  * know we processed the task management command.
1903                  */
1904                 ccb->ccb_h.status = CAM_REQ_INPROG;
1905                 ccb->ccb_h.func_code = XPT_NOTIFY_ACKNOWLEDGE;
1906                 switch (io->taskio.task_status) {
1907                 case CTL_TASK_FUNCTION_COMPLETE:
1908                         ccb->cna2.arg = CAM_RSP_TMF_COMPLETE;
1909                         break;
1910                 case CTL_TASK_FUNCTION_SUCCEEDED:
1911                         ccb->cna2.arg = CAM_RSP_TMF_SUCCEEDED;
1912                         ccb->ccb_h.flags |= CAM_SEND_STATUS;
1913                         break;
1914                 case CTL_TASK_FUNCTION_REJECTED:
1915                         ccb->cna2.arg = CAM_RSP_TMF_REJECTED;
1916                         ccb->ccb_h.flags |= CAM_SEND_STATUS;
1917                         break;
1918                 case CTL_TASK_LUN_DOES_NOT_EXIST:
1919                         ccb->cna2.arg = CAM_RSP_TMF_INCORRECT_LUN;
1920                         ccb->ccb_h.flags |= CAM_SEND_STATUS;
1921                         break;
1922                 case CTL_TASK_FUNCTION_NOT_SUPPORTED:
1923                         ccb->cna2.arg = CAM_RSP_TMF_FAILED;
1924                         ccb->ccb_h.flags |= CAM_SEND_STATUS;
1925                         break;
1926                 }
1927                 ccb->cna2.arg |= scsi_3btoul(io->taskio.task_resp) << 8;
1928                 xpt_action(ccb);
1929         } else if (io->io_hdr.flags & CTL_FLAG_STATUS_SENT) {
1930                 ctlfe_requeue_ccb(periph, ccb, /* unlock */1);
1931                 return;
1932         } else {
1933                 io->io_hdr.flags |= CTL_FLAG_STATUS_QUEUED;
1934                 TAILQ_INSERT_TAIL(&softc->work_queue, &ccb->ccb_h,
1935                                   periph_links.tqe);
1936                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1937         }
1938
1939         cam_periph_unlock(periph);
1940 }
1941
1942 static void
1943 ctlfe_dump(void)
1944 {
1945         struct ctlfe_softc *bus_softc;
1946         struct ctlfe_lun_softc *lun_softc;
1947
1948         STAILQ_FOREACH(bus_softc, &ctlfe_softc_list, links) {
1949                 ctlfe_dump_sim(bus_softc->sim);
1950                 STAILQ_FOREACH(lun_softc, &bus_softc->lun_softc_list, links)
1951                         ctlfe_dump_queue(lun_softc);
1952         }
1953 }