The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/aic7xxx/aic7xxx_osm.c

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    1 /*-
    2  * Bus independent FreeBSD shim for the aic7xxx based Adaptec SCSI controllers
    3  *
    4  * Copyright (c) 1994-2001 Justin T. Gibbs.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions, and the following disclaimer,
   12  *    without modification.
   13  * 2. The name of the author may not be used to endorse or promote products
   14  *    derived from this software without specific prior written permission.
   15  *
   16  * Alternatively, this software may be distributed under the terms of the
   17  * GNU Public License ("GPL").
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
   23  * ANY DIRECT, INDIRECT, INCIDENTAL, 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, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.c#20 $
   32  */
   33 
   34 #include <sys/cdefs.h>
   35 __FBSDID("$FreeBSD: releng/6.2/sys/dev/aic7xxx/aic7xxx_osm.c 151303 2005-10-14 02:03:27Z delphij $");
   36 
   37 #include <dev/aic7xxx/aic7xxx_osm.h>
   38 #include <dev/aic7xxx/aic7xxx_inline.h>
   39 
   40 #include <sys/kthread.h>
   41 
   42 #ifndef AHC_TMODE_ENABLE
   43 #define AHC_TMODE_ENABLE 0
   44 #endif
   45 
   46 #include <dev/aic7xxx/aic_osm_lib.c>
   47 
   48 #define ccb_scb_ptr spriv_ptr0
   49 
   50 devclass_t ahc_devclass;
   51 
   52 #if UNUSED
   53 static void     ahc_dump_targcmd(struct target_cmd *cmd);
   54 #endif
   55 static int      ahc_modevent(module_t mod, int type, void *data);
   56 static void     ahc_action(struct cam_sim *sim, union ccb *ccb);
   57 static void     ahc_get_tran_settings(struct ahc_softc *ahc,
   58                                       int our_id, char channel,
   59                                       struct ccb_trans_settings *cts);
   60 static void     ahc_async(void *callback_arg, uint32_t code,
   61                           struct cam_path *path, void *arg);
   62 static void     ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs,
   63                                 int nsegments, int error);
   64 static void     ahc_poll(struct cam_sim *sim);
   65 static void     ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
   66                                struct ccb_scsiio *csio, struct scb *scb);
   67 static void     ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim,
   68                               union ccb *ccb);
   69 static int      ahc_create_path(struct ahc_softc *ahc,
   70                                 char channel, u_int target, u_int lun,
   71                                 struct cam_path **path);
   72 
   73 
   74 static int
   75 ahc_create_path(struct ahc_softc *ahc, char channel, u_int target,
   76                 u_int lun, struct cam_path **path)
   77 {
   78         path_id_t path_id;
   79 
   80         if (channel == 'B')
   81                 path_id = cam_sim_path(ahc->platform_data->sim_b);
   82         else 
   83                 path_id = cam_sim_path(ahc->platform_data->sim);
   84 
   85         return (xpt_create_path(path, /*periph*/NULL,
   86                                 path_id, target, lun));
   87 }
   88 
   89 int
   90 ahc_map_int(struct ahc_softc *ahc)
   91 {
   92         int error;
   93         int zero;
   94         int shareable;
   95 
   96         zero = 0;
   97         shareable = (ahc->flags & AHC_EDGE_INTERRUPT) ? 0: RF_SHAREABLE;
   98         ahc->platform_data->irq =
   99             bus_alloc_resource_any(ahc->dev_softc, SYS_RES_IRQ, &zero,
  100                                    RF_ACTIVE | shareable);
  101         if (ahc->platform_data->irq == NULL) {
  102                 device_printf(ahc->dev_softc,
  103                               "bus_alloc_resource() failed to allocate IRQ\n");
  104                 return (ENOMEM);
  105         }
  106         ahc->platform_data->irq_res_type = SYS_RES_IRQ;
  107 
  108         /* Hook up our interrupt handler */
  109         error = bus_setup_intr(ahc->dev_softc, ahc->platform_data->irq,
  110                                INTR_TYPE_CAM, ahc_platform_intr, ahc,
  111                                &ahc->platform_data->ih);
  112 
  113         if (error != 0)
  114                 device_printf(ahc->dev_softc, "bus_setup_intr() failed: %d\n",
  115                               error);
  116         return (error);
  117 }
  118 
  119 int
  120 aic7770_map_registers(struct ahc_softc *ahc, u_int unused_ioport_arg)
  121 {
  122         struct  resource *regs;
  123         int     rid;
  124 
  125         rid = 0;
  126         regs = bus_alloc_resource_any(ahc->dev_softc, SYS_RES_IOPORT, &rid,
  127                                       RF_ACTIVE);
  128         if (regs == NULL) {
  129                 device_printf(ahc->dev_softc, "Unable to map I/O space?!\n");
  130                 return ENOMEM;
  131         }
  132         ahc->platform_data->regs_res_type = SYS_RES_IOPORT;
  133         ahc->platform_data->regs_res_id = rid,
  134         ahc->platform_data->regs = regs;
  135         ahc->tag = rman_get_bustag(regs);
  136         ahc->bsh = rman_get_bushandle(regs);
  137         return (0);
  138 }
  139 
  140 /*
  141  * Attach all the sub-devices we can find
  142  */
  143 int
  144 ahc_attach(struct ahc_softc *ahc)
  145 {
  146         char   ahc_info[256];
  147         struct ccb_setasync csa;
  148         struct cam_devq *devq;
  149         int bus_id;
  150         int bus_id2;
  151         struct cam_sim *sim;
  152         struct cam_sim *sim2;
  153         struct cam_path *path;
  154         struct cam_path *path2;
  155         long s;
  156         int count;
  157 
  158         count = 0;
  159         sim = NULL;
  160         sim2 = NULL;
  161 
  162         /*
  163          * Create a thread to perform all recovery.
  164          */
  165         if (ahc_spawn_recovery_thread(ahc) != 0)
  166                 goto fail;
  167 
  168         ahc_controller_info(ahc, ahc_info);
  169         printf("%s\n", ahc_info);
  170         ahc_lock(ahc, &s);
  171 
  172         /*
  173          * Attach secondary channel first if the user has
  174          * declared it the primary channel.
  175          */
  176         if ((ahc->features & AHC_TWIN) != 0
  177          && (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
  178                 bus_id = 1;
  179                 bus_id2 = 0;
  180         } else {
  181                 bus_id = 0;
  182                 bus_id2 = 1;
  183         }
  184 
  185         /*
  186          * Create the device queue for our SIM(s).
  187          */
  188         devq = cam_simq_alloc(AHC_MAX_QUEUE);
  189         if (devq == NULL)
  190                 goto fail;
  191 
  192         /*
  193          * Construct our first channel SIM entry
  194          */
  195         sim = cam_sim_alloc(ahc_action, ahc_poll, "ahc", ahc,
  196                             device_get_unit(ahc->dev_softc),
  197                             1, AHC_MAX_QUEUE, devq);
  198         if (sim == NULL) {
  199                 cam_simq_free(devq);
  200                 goto fail;
  201         }
  202 
  203         if (xpt_bus_register(sim, bus_id) != CAM_SUCCESS) {
  204                 cam_sim_free(sim, /*free_devq*/TRUE);
  205                 sim = NULL;
  206                 goto fail;
  207         }
  208         
  209         if (xpt_create_path(&path, /*periph*/NULL,
  210                             cam_sim_path(sim), CAM_TARGET_WILDCARD,
  211                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
  212                 xpt_bus_deregister(cam_sim_path(sim));
  213                 cam_sim_free(sim, /*free_devq*/TRUE);
  214                 sim = NULL;
  215                 goto fail;
  216         }
  217                 
  218         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
  219         csa.ccb_h.func_code = XPT_SASYNC_CB;
  220         csa.event_enable = AC_LOST_DEVICE;
  221         csa.callback = ahc_async;
  222         csa.callback_arg = sim;
  223         xpt_action((union ccb *)&csa);
  224         count++;
  225 
  226         if (ahc->features & AHC_TWIN) {
  227                 sim2 = cam_sim_alloc(ahc_action, ahc_poll, "ahc",
  228                                     ahc, device_get_unit(ahc->dev_softc), 1,
  229                                     AHC_MAX_QUEUE, devq);
  230 
  231                 if (sim2 == NULL) {
  232                         printf("ahc_attach: Unable to attach second "
  233                                "bus due to resource shortage");
  234                         goto fail;
  235                 }
  236                 
  237                 if (xpt_bus_register(sim2, bus_id2) != CAM_SUCCESS) {
  238                         printf("ahc_attach: Unable to attach second "
  239                                "bus due to resource shortage");
  240                         /*
  241                          * We do not want to destroy the device queue
  242                          * because the first bus is using it.
  243                          */
  244                         cam_sim_free(sim2, /*free_devq*/FALSE);
  245                         goto fail;
  246                 }
  247 
  248                 if (xpt_create_path(&path2, /*periph*/NULL,
  249                                     cam_sim_path(sim2),
  250                                     CAM_TARGET_WILDCARD,
  251                                     CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
  252                         xpt_bus_deregister(cam_sim_path(sim2));
  253                         cam_sim_free(sim2, /*free_devq*/FALSE);
  254                         sim2 = NULL;
  255                         goto fail;
  256                 }
  257                 xpt_setup_ccb(&csa.ccb_h, path2, /*priority*/5);
  258                 csa.ccb_h.func_code = XPT_SASYNC_CB;
  259                 csa.event_enable = AC_LOST_DEVICE;
  260                 csa.callback = ahc_async;
  261                 csa.callback_arg = sim2;
  262                 xpt_action((union ccb *)&csa);
  263                 count++;
  264         }
  265 
  266 fail:
  267         if ((ahc->features & AHC_TWIN) != 0
  268          && (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
  269                 ahc->platform_data->sim_b = sim;
  270                 ahc->platform_data->path_b = path;
  271                 ahc->platform_data->sim = sim2;
  272                 ahc->platform_data->path = path2;
  273         } else {
  274                 ahc->platform_data->sim = sim;
  275                 ahc->platform_data->path = path;
  276                 ahc->platform_data->sim_b = sim2;
  277                 ahc->platform_data->path_b = path2;
  278         }
  279 
  280         if (count != 0) {
  281                 /* We have to wait until after any system dumps... */
  282                 ahc->platform_data->eh =
  283                     EVENTHANDLER_REGISTER(shutdown_final, ahc_shutdown,
  284                                           ahc, SHUTDOWN_PRI_DEFAULT);
  285                 ahc_intr_enable(ahc, TRUE);
  286         }
  287 
  288         ahc_unlock(ahc, &s);
  289         return (count);
  290 }
  291 
  292 /*
  293  * Catch an interrupt from the adapter
  294  */
  295 void
  296 ahc_platform_intr(void *arg)
  297 {
  298         struct  ahc_softc *ahc;
  299 
  300         ahc = (struct ahc_softc *)arg; 
  301         ahc_intr(ahc);
  302 }
  303 
  304 /*
  305  * We have an scb which has been processed by the
  306  * adaptor, now we look to see how the operation
  307  * went.
  308  */
  309 void
  310 ahc_done(struct ahc_softc *ahc, struct scb *scb)
  311 {
  312         union ccb *ccb;
  313 
  314         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
  315                   ("ahc_done - scb %d\n", scb->hscb->tag));
  316 
  317         ccb = scb->io_ctx;
  318         LIST_REMOVE(scb, pending_links);
  319         if ((scb->flags & SCB_TIMEDOUT) != 0)
  320                 LIST_REMOVE(scb, timedout_links);
  321         if ((scb->flags & SCB_UNTAGGEDQ) != 0) {
  322                 struct scb_tailq *untagged_q;
  323                 int target_offset;
  324 
  325                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
  326                 untagged_q = &ahc->untagged_queues[target_offset];
  327                 TAILQ_REMOVE(untagged_q, scb, links.tqe);
  328                 scb->flags &= ~SCB_UNTAGGEDQ;
  329                 ahc_run_untagged_queue(ahc, untagged_q);
  330         }
  331 
  332         untimeout(ahc_platform_timeout, (caddr_t)scb, ccb->ccb_h.timeout_ch);
  333 
  334         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
  335                 bus_dmasync_op_t op;
  336 
  337                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
  338                         op = BUS_DMASYNC_POSTREAD;
  339                 else
  340                         op = BUS_DMASYNC_POSTWRITE;
  341                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
  342                 bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
  343         }
  344 
  345         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
  346                 struct cam_path *ccb_path;
  347 
  348                 /*
  349                  * If we have finally disconnected, clean up our
  350                  * pending device state.
  351                  * XXX - There may be error states that cause where
  352                  *       we will remain connected.
  353                  */
  354                 ccb_path = ccb->ccb_h.path;
  355                 if (ahc->pending_device != NULL
  356                  && xpt_path_comp(ahc->pending_device->path, ccb_path) == 0) {
  357 
  358                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
  359                                 ahc->pending_device = NULL;
  360                         } else {
  361                                 if (bootverbose) {
  362                                         xpt_print_path(ccb->ccb_h.path);
  363                                         printf("Still connected\n");
  364                                 }
  365                                 aic_freeze_ccb(ccb);
  366                         }
  367                 }
  368 
  369                 if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
  370                         ccb->ccb_h.status |= CAM_REQ_CMP;
  371                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
  372                 ahc_free_scb(ahc, scb);
  373                 xpt_done(ccb);
  374                 return;
  375         }
  376 
  377         /*
  378          * If the recovery SCB completes, we have to be
  379          * out of our timeout.
  380          */
  381         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
  382                 struct  scb *list_scb;
  383 
  384                 ahc->scb_data->recovery_scbs--;
  385 
  386                 if (aic_get_transaction_status(scb) == CAM_BDR_SENT
  387                  || aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
  388                         aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
  389 
  390                 if (ahc->scb_data->recovery_scbs == 0) {
  391                         /*
  392                          * All recovery actions have completed successfully,
  393                          * so reinstate the timeouts for all other pending
  394                          * commands.
  395                          */
  396                         LIST_FOREACH(list_scb, &ahc->pending_scbs,
  397                                      pending_links) {
  398 
  399                                 aic_scb_timer_reset(list_scb,
  400                                                     aic_get_timeout(scb));
  401                         }
  402 
  403                         ahc_print_path(ahc, scb);
  404                         printf("no longer in timeout, status = %x\n",
  405                                ccb->ccb_h.status);
  406                 }
  407         }
  408 
  409         /* Don't clobber any existing error state */
  410         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
  411                 ccb->ccb_h.status |= CAM_REQ_CMP;
  412         } else if ((scb->flags & SCB_SENSE) != 0) {
  413                 /*
  414                  * We performed autosense retrieval.
  415                  *
  416                  * Zero any sense not transferred by the
  417                  * device.  The SCSI spec mandates that any
  418                  * untransfered data should be assumed to be
  419                  * zero.  Complete the 'bounce' of sense information
  420                  * through buffers accessible via bus-space by
  421                  * copying it into the clients csio.
  422                  */
  423                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
  424                 memcpy(&ccb->csio.sense_data,
  425                        ahc_get_sense_buf(ahc, scb),
  426                        (aic_le32toh(scb->sg_list->len) & AHC_SG_LEN_MASK)
  427                        - ccb->csio.sense_resid);
  428                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
  429         }
  430         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
  431         ahc_free_scb(ahc, scb);
  432         xpt_done(ccb);
  433 }
  434 
  435 static void
  436 ahc_action(struct cam_sim *sim, union ccb *ccb)
  437 {
  438         struct  ahc_softc *ahc;
  439         struct  ahc_tmode_lstate *lstate;
  440         u_int   target_id;
  441         u_int   our_id;
  442         long    s;
  443 
  444         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahc_action\n"));
  445         
  446         ahc = (struct ahc_softc *)cam_sim_softc(sim);
  447 
  448         target_id = ccb->ccb_h.target_id;
  449         our_id = SIM_SCSI_ID(ahc, sim);
  450         
  451         switch (ccb->ccb_h.func_code) {
  452         /* Common cases first */
  453         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
  454         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
  455         {
  456                 struct     ahc_tmode_tstate *tstate;
  457                 cam_status status;
  458 
  459                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
  460                                              &lstate, TRUE);
  461 
  462                 if (status != CAM_REQ_CMP) {
  463                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
  464                                 /* Response from the black hole device */
  465                                 tstate = NULL;
  466                                 lstate = ahc->black_hole;
  467                         } else {
  468                                 ccb->ccb_h.status = status;
  469                                 xpt_done(ccb);
  470                                 break;
  471                         }
  472                 }
  473                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
  474 
  475                         ahc_lock(ahc, &s);
  476                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
  477                                           sim_links.sle);
  478                         ccb->ccb_h.status = CAM_REQ_INPROG;
  479                         if ((ahc->flags & AHC_TQINFIFO_BLOCKED) != 0)
  480                                 ahc_run_tqinfifo(ahc, /*paused*/FALSE);
  481                         ahc_unlock(ahc, &s);
  482                         break;
  483                 }
  484 
  485                 /*
  486                  * The target_id represents the target we attempt to
  487                  * select.  In target mode, this is the initiator of
  488                  * the original command.
  489                  */
  490                 our_id = target_id;
  491                 target_id = ccb->csio.init_id;
  492                 /* FALLTHROUGH */
  493         }
  494         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
  495         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
  496         {
  497                 struct  scb *scb;
  498                 struct  hardware_scb *hscb;     
  499 
  500                 if ((ahc->flags & AHC_INITIATORROLE) == 0
  501                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
  502                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
  503                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
  504                         xpt_done(ccb);
  505                         return;
  506                 }
  507 
  508                 /*
  509                  * get an scb to use.
  510                  */
  511                 ahc_lock(ahc, &s);
  512                 if ((scb = ahc_get_scb(ahc)) == NULL) {
  513         
  514                         xpt_freeze_simq(sim, /*count*/1);
  515                         ahc->flags |= AHC_RESOURCE_SHORTAGE;
  516                         ahc_unlock(ahc, &s);
  517                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
  518                         xpt_done(ccb);
  519                         return;
  520                 }
  521                 ahc_unlock(ahc, &s);
  522                 
  523                 hscb = scb->hscb;
  524                 
  525                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
  526                           ("start scb(%p)\n", scb));
  527                 scb->io_ctx = ccb;
  528                 /*
  529                  * So we can find the SCB when an abort is requested
  530                  */
  531                 ccb->ccb_h.ccb_scb_ptr = scb;
  532 
  533                 /*
  534                  * Put all the arguments for the xfer in the scb
  535                  */
  536                 hscb->control = 0;
  537                 hscb->scsiid = BUILD_SCSIID(ahc, sim, target_id, our_id);
  538                 hscb->lun = ccb->ccb_h.target_lun;
  539                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
  540                         hscb->cdb_len = 0;
  541                         scb->flags |= SCB_DEVICE_RESET;
  542                         hscb->control |= MK_MESSAGE;
  543                         ahc_execute_scb(scb, NULL, 0, 0);
  544                 } else {
  545                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
  546                                 struct target_data *tdata;
  547 
  548                                 tdata = &hscb->shared_data.tdata;
  549                                 if (ahc->pending_device == lstate)
  550                                         scb->flags |= SCB_TARGET_IMMEDIATE;
  551                                 hscb->control |= TARGET_SCB;
  552                                 scb->flags |= SCB_TARGET_SCB;
  553                                 tdata->target_phases = 0;
  554                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
  555                                         tdata->target_phases |= SPHASE_PENDING;
  556                                         tdata->scsi_status =
  557                                             ccb->csio.scsi_status;
  558                                 }
  559                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
  560                                         tdata->target_phases |= NO_DISCONNECT;
  561 
  562                                 tdata->initiator_tag = ccb->csio.tag_id;
  563                         }
  564                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
  565                                 hscb->control |= ccb->csio.tag_action;
  566                         
  567                         ahc_setup_data(ahc, sim, &ccb->csio, scb);
  568                 }
  569                 break;
  570         }
  571         case XPT_NOTIFY_ACK:
  572         case XPT_IMMED_NOTIFY:
  573         {
  574                 struct     ahc_tmode_tstate *tstate;
  575                 struct     ahc_tmode_lstate *lstate;
  576                 cam_status status;
  577 
  578                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
  579                                              &lstate, TRUE);
  580 
  581                 if (status != CAM_REQ_CMP) {
  582                         ccb->ccb_h.status = status;
  583                         xpt_done(ccb);
  584                         break;
  585                 }
  586                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
  587                                   sim_links.sle);
  588                 ccb->ccb_h.status = CAM_REQ_INPROG;
  589                 ahc_send_lstate_events(ahc, lstate);
  590                 break;
  591         }
  592         case XPT_EN_LUN:                /* Enable LUN as a target */
  593                 ahc_handle_en_lun(ahc, sim, ccb);
  594                 xpt_done(ccb);
  595                 break;
  596         case XPT_ABORT:                 /* Abort the specified CCB */
  597         {
  598                 ahc_abort_ccb(ahc, sim, ccb);
  599                 break;
  600         }
  601         case XPT_SET_TRAN_SETTINGS:
  602         {
  603 #ifdef AHC_NEW_TRAN_SETTINGS
  604                 struct  ahc_devinfo devinfo;
  605                 struct  ccb_trans_settings *cts;
  606                 struct  ccb_trans_settings_scsi *scsi;
  607                 struct  ccb_trans_settings_spi *spi;
  608                 struct  ahc_initiator_tinfo *tinfo;
  609                 struct  ahc_tmode_tstate *tstate;
  610                 uint16_t *discenable;
  611                 uint16_t *tagenable;
  612                 u_int   update_type;
  613 
  614                 cts = &ccb->cts;
  615                 scsi = &cts->proto_specific.scsi;
  616                 spi = &cts->xport_specific.spi;
  617                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
  618                                     cts->ccb_h.target_id,
  619                                     cts->ccb_h.target_lun,
  620                                     SIM_CHANNEL(ahc, sim),
  621                                     ROLE_UNKNOWN);
  622                 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
  623                                             devinfo.our_scsiid,
  624                                             devinfo.target, &tstate);
  625                 update_type = 0;
  626                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
  627                         update_type |= AHC_TRANS_GOAL;
  628                         discenable = &tstate->discenable;
  629                         tagenable = &tstate->tagenable;
  630                         tinfo->curr.protocol_version =
  631                             cts->protocol_version;
  632                         tinfo->curr.transport_version =
  633                             cts->transport_version;
  634                         tinfo->goal.protocol_version =
  635                             cts->protocol_version;
  636                         tinfo->goal.transport_version =
  637                             cts->transport_version;
  638                 } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
  639                         update_type |= AHC_TRANS_USER;
  640                         discenable = &ahc->user_discenable;
  641                         tagenable = &ahc->user_tagenable;
  642                         tinfo->user.protocol_version =
  643                             cts->protocol_version;
  644                         tinfo->user.transport_version =
  645                             cts->transport_version;
  646                 } else {
  647                         ccb->ccb_h.status = CAM_REQ_INVALID;
  648                         xpt_done(ccb);
  649                         break;
  650                 }
  651                 
  652                 ahc_lock(ahc, &s);
  653 
  654                 if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
  655                         if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
  656                                 *discenable |= devinfo.target_mask;
  657                         else
  658                                 *discenable &= ~devinfo.target_mask;
  659                 }
  660                 
  661                 if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
  662                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
  663                                 *tagenable |= devinfo.target_mask;
  664                         else
  665                                 *tagenable &= ~devinfo.target_mask;
  666                 }       
  667 
  668                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
  669                         ahc_validate_width(ahc, /*tinfo limit*/NULL,
  670                                            &spi->bus_width, ROLE_UNKNOWN);
  671                         ahc_set_width(ahc, &devinfo, spi->bus_width,
  672                                       update_type, /*paused*/FALSE);
  673                 }
  674 
  675                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
  676                         if (update_type == AHC_TRANS_USER)
  677                                 spi->ppr_options = tinfo->user.ppr_options;
  678                         else
  679                                 spi->ppr_options = tinfo->goal.ppr_options;
  680                 }
  681 
  682                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
  683                         if (update_type == AHC_TRANS_USER)
  684                                 spi->sync_offset = tinfo->user.offset;
  685                         else
  686                                 spi->sync_offset = tinfo->goal.offset;
  687                 }
  688 
  689                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
  690                         if (update_type == AHC_TRANS_USER)
  691                                 spi->sync_period = tinfo->user.period;
  692                         else
  693                                 spi->sync_period = tinfo->goal.period;
  694                 }
  695 
  696                 if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
  697                  || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
  698                         struct ahc_syncrate *syncrate;
  699                         u_int maxsync;
  700 
  701                         if ((ahc->features & AHC_ULTRA2) != 0)
  702                                 maxsync = AHC_SYNCRATE_DT;
  703                         else if ((ahc->features & AHC_ULTRA) != 0)
  704                                 maxsync = AHC_SYNCRATE_ULTRA;
  705                         else
  706                                 maxsync = AHC_SYNCRATE_FAST;
  707 
  708                         if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
  709                                 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
  710 
  711                         syncrate = ahc_find_syncrate(ahc, &spi->sync_period,
  712                                                      &spi->ppr_options,
  713                                                      maxsync);
  714                         ahc_validate_offset(ahc, /*tinfo limit*/NULL,
  715                                             syncrate, &spi->sync_offset,
  716                                             spi->bus_width, ROLE_UNKNOWN);
  717 
  718                         /* We use a period of 0 to represent async */
  719                         if (spi->sync_offset == 0) {
  720                                 spi->sync_period = 0;
  721                                 spi->ppr_options = 0;
  722                         }
  723 
  724                         ahc_set_syncrate(ahc, &devinfo, syncrate,
  725                                          spi->sync_period, spi->sync_offset,
  726                                          spi->ppr_options, update_type,
  727                                          /*paused*/FALSE);
  728                 }
  729                 ahc_unlock(ahc, &s);
  730                 ccb->ccb_h.status = CAM_REQ_CMP;
  731                 xpt_done(ccb);
  732 #else
  733                 struct    ahc_devinfo devinfo;
  734                 struct    ccb_trans_settings *cts;
  735                 struct    ahc_initiator_tinfo *tinfo;
  736                 struct    ahc_tmode_tstate *tstate;
  737                 uint16_t *discenable;
  738                 uint16_t *tagenable;
  739                 u_int     update_type;
  740                 long      s;
  741 
  742                 cts = &ccb->cts;
  743                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
  744                                     cts->ccb_h.target_id,
  745                                     cts->ccb_h.target_lun,
  746                                     SIM_CHANNEL(ahc, sim),
  747                                     ROLE_UNKNOWN);
  748                 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
  749                                             devinfo.our_scsiid,
  750                                             devinfo.target, &tstate);
  751                 update_type = 0;
  752                 if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) {
  753                         update_type |= AHC_TRANS_GOAL;
  754                         discenable = &tstate->discenable;
  755                         tagenable = &tstate->tagenable;
  756                 } else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
  757                         update_type |= AHC_TRANS_USER;
  758                         discenable = &ahc->user_discenable;
  759                         tagenable = &ahc->user_tagenable;
  760                 } else {
  761                         ccb->ccb_h.status = CAM_REQ_INVALID;
  762                         xpt_done(ccb);
  763                         break;
  764                 }
  765                 
  766                 ahc_lock(ahc, &s);
  767 
  768                 if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
  769                         if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
  770                                 *discenable |= devinfo.target_mask;
  771                         else
  772                                 *discenable &= ~devinfo.target_mask;
  773                 }
  774                 
  775                 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
  776                         if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
  777                                 *tagenable |= devinfo.target_mask;
  778                         else
  779                                 *tagenable &= ~devinfo.target_mask;
  780                 }       
  781 
  782                 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
  783                         ahc_validate_width(ahc, /*tinfo limit*/NULL,
  784                                            &cts->bus_width, ROLE_UNKNOWN);
  785                         ahc_set_width(ahc, &devinfo, cts->bus_width,
  786                                       update_type, /*paused*/FALSE);
  787                 }
  788 
  789                 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) {
  790                         if (update_type == AHC_TRANS_USER)
  791                                 cts->sync_offset = tinfo->user.offset;
  792                         else
  793                                 cts->sync_offset = tinfo->goal.offset;
  794                 }
  795 
  796                 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) {
  797                         if (update_type == AHC_TRANS_USER)
  798                                 cts->sync_period = tinfo->user.period;
  799                         else
  800                                 cts->sync_period = tinfo->goal.period;
  801                 }
  802 
  803                 if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
  804                  || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)) {
  805                         struct ahc_syncrate *syncrate;
  806                         u_int ppr_options;
  807                         u_int maxsync;
  808 
  809                         if ((ahc->features & AHC_ULTRA2) != 0)
  810                                 maxsync = AHC_SYNCRATE_DT;
  811                         else if ((ahc->features & AHC_ULTRA) != 0)
  812                                 maxsync = AHC_SYNCRATE_ULTRA;
  813                         else
  814                                 maxsync = AHC_SYNCRATE_FAST;
  815 
  816                         ppr_options = 0;
  817                         if (cts->sync_period <= 9
  818                          && cts->bus_width == MSG_EXT_WDTR_BUS_16_BIT)
  819                                 ppr_options = MSG_EXT_PPR_DT_REQ;
  820 
  821                         syncrate = ahc_find_syncrate(ahc, &cts->sync_period,
  822                                                      &ppr_options,
  823                                                      maxsync);
  824                         ahc_validate_offset(ahc, /*tinfo limit*/NULL,
  825                                             syncrate, &cts->sync_offset,
  826                                             MSG_EXT_WDTR_BUS_8_BIT,
  827                                             ROLE_UNKNOWN);
  828 
  829                         /* We use a period of 0 to represent async */
  830                         if (cts->sync_offset == 0) {
  831                                 cts->sync_period = 0;
  832                                 ppr_options = 0;
  833                         }
  834 
  835                         if (ppr_options == MSG_EXT_PPR_DT_REQ
  836                          && tinfo->user.transport_version >= 3) {
  837                                 tinfo->goal.transport_version =
  838                                     tinfo->user.transport_version;
  839                                 tinfo->curr.transport_version =
  840                                     tinfo->user.transport_version;
  841                         }
  842                         
  843                         ahc_set_syncrate(ahc, &devinfo, syncrate,
  844                                          cts->sync_period, cts->sync_offset,
  845                                          ppr_options, update_type,
  846                                          /*paused*/FALSE);
  847                 }
  848                 ahc_unlock(ahc, &s);
  849                 ccb->ccb_h.status = CAM_REQ_CMP;
  850                 xpt_done(ccb);
  851 #endif
  852                 break;
  853         }
  854         case XPT_GET_TRAN_SETTINGS:
  855         /* Get default/user set transfer settings for the target */
  856         {
  857 
  858                 ahc_lock(ahc, &s);
  859                 ahc_get_tran_settings(ahc, SIM_SCSI_ID(ahc, sim),
  860                                       SIM_CHANNEL(ahc, sim), &ccb->cts);
  861                 ahc_unlock(ahc, &s);
  862                 xpt_done(ccb);
  863                 break;
  864         }
  865         case XPT_CALC_GEOMETRY:
  866         {
  867                 int extended;
  868 
  869                 extended = SIM_IS_SCSIBUS_B(ahc, sim)
  870                          ? ahc->flags & AHC_EXTENDED_TRANS_B
  871                          : ahc->flags & AHC_EXTENDED_TRANS_A;
  872                 aic_calc_geometry(&ccb->ccg, extended);
  873                 xpt_done(ccb);
  874                 break;
  875         }
  876         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
  877         {
  878                 int  found;
  879                 
  880                 ahc_lock(ahc, &s);
  881                 found = ahc_reset_channel(ahc, SIM_CHANNEL(ahc, sim),
  882                                           /*initiate reset*/TRUE);
  883                 ahc_unlock(ahc, &s);
  884                 if (bootverbose) {
  885                         xpt_print_path(SIM_PATH(ahc, sim));
  886                         printf("SCSI bus reset delivered. "
  887                                "%d SCBs aborted.\n", found);
  888                 }
  889                 ccb->ccb_h.status = CAM_REQ_CMP;
  890                 xpt_done(ccb);
  891                 break;
  892         }
  893         case XPT_TERM_IO:               /* Terminate the I/O process */
  894                 /* XXX Implement */
  895                 ccb->ccb_h.status = CAM_REQ_INVALID;
  896                 xpt_done(ccb);
  897                 break;
  898         case XPT_PATH_INQ:              /* Path routing inquiry */
  899         {
  900                 struct ccb_pathinq *cpi = &ccb->cpi;
  901                 
  902                 cpi->version_num = 1; /* XXX??? */
  903                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
  904                 if ((ahc->features & AHC_WIDE) != 0)
  905                         cpi->hba_inquiry |= PI_WIDE_16;
  906                 if ((ahc->features & AHC_TARGETMODE) != 0) {
  907                         cpi->target_sprt = PIT_PROCESSOR
  908                                          | PIT_DISCONNECT
  909                                          | PIT_TERM_IO;
  910                 } else {
  911                         cpi->target_sprt = 0;
  912                 }
  913                 cpi->hba_misc = 0;
  914                 cpi->hba_eng_cnt = 0;
  915                 cpi->max_target = (ahc->features & AHC_WIDE) ? 15 : 7;
  916                 cpi->max_lun = AHC_NUM_LUNS - 1;
  917                 if (SIM_IS_SCSIBUS_B(ahc, sim)) {
  918                         cpi->initiator_id = ahc->our_id_b;
  919                         if ((ahc->flags & AHC_RESET_BUS_B) == 0)
  920                                 cpi->hba_misc |= PIM_NOBUSRESET;
  921                 } else {
  922                         cpi->initiator_id = ahc->our_id;
  923                         if ((ahc->flags & AHC_RESET_BUS_A) == 0)
  924                                 cpi->hba_misc |= PIM_NOBUSRESET;
  925                 }
  926                 cpi->bus_id = cam_sim_bus(sim);
  927                 cpi->base_transfer_speed = 3300;
  928                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
  929                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
  930                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
  931                 cpi->unit_number = cam_sim_unit(sim);
  932 #ifdef AHC_NEW_TRAN_SETTINGS
  933                 cpi->protocol = PROTO_SCSI;
  934                 cpi->protocol_version = SCSI_REV_2;
  935                 cpi->transport = XPORT_SPI;
  936                 cpi->transport_version = 2;
  937                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
  938                 if ((ahc->features & AHC_DT) != 0) {
  939                         cpi->transport_version = 3;
  940                         cpi->xport_specific.spi.ppr_options =
  941                             SID_SPI_CLOCK_DT_ST;
  942                 }
  943 #endif
  944                 cpi->ccb_h.status = CAM_REQ_CMP;
  945                 xpt_done(ccb);
  946                 break;
  947         }
  948         default:
  949                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
  950                 xpt_done(ccb);
  951                 break;
  952         }
  953 }
  954 
  955 static void
  956 ahc_get_tran_settings(struct ahc_softc *ahc, int our_id, char channel,
  957                       struct ccb_trans_settings *cts)
  958 {
  959 #ifdef AHC_NEW_TRAN_SETTINGS
  960         struct  ahc_devinfo devinfo;
  961         struct  ccb_trans_settings_scsi *scsi;
  962         struct  ccb_trans_settings_spi *spi;
  963         struct  ahc_initiator_tinfo *targ_info;
  964         struct  ahc_tmode_tstate *tstate;
  965         struct  ahc_transinfo *tinfo;
  966 
  967         scsi = &cts->proto_specific.scsi;
  968         spi = &cts->xport_specific.spi;
  969         ahc_compile_devinfo(&devinfo, our_id,
  970                             cts->ccb_h.target_id,
  971                             cts->ccb_h.target_lun,
  972                             channel, ROLE_UNKNOWN);
  973         targ_info = ahc_fetch_transinfo(ahc, devinfo.channel,
  974                                         devinfo.our_scsiid,
  975                                         devinfo.target, &tstate);
  976         
  977         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
  978                 tinfo = &targ_info->curr;
  979         else
  980                 tinfo = &targ_info->user;
  981         
  982         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
  983         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
  984         if (cts->type == CTS_TYPE_USER_SETTINGS) {
  985                 if ((ahc->user_discenable & devinfo.target_mask) != 0)
  986                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
  987 
  988                 if ((ahc->user_tagenable & devinfo.target_mask) != 0)
  989                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
  990         } else {
  991                 if ((tstate->discenable & devinfo.target_mask) != 0)
  992                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
  993 
  994                 if ((tstate->tagenable & devinfo.target_mask) != 0)
  995                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
  996         }
  997         cts->protocol_version = tinfo->protocol_version;
  998         cts->transport_version = tinfo->transport_version;
  999 
 1000         spi->sync_period = tinfo->period;
 1001         spi->sync_offset = tinfo->offset;
 1002         spi->bus_width = tinfo->width;
 1003         spi->ppr_options = tinfo->ppr_options;
 1004         
 1005         cts->protocol = PROTO_SCSI;
 1006         cts->transport = XPORT_SPI;
 1007         spi->valid = CTS_SPI_VALID_SYNC_RATE
 1008                    | CTS_SPI_VALID_SYNC_OFFSET
 1009                    | CTS_SPI_VALID_BUS_WIDTH
 1010                    | CTS_SPI_VALID_PPR_OPTIONS;
 1011 
 1012         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 1013                 scsi->valid = CTS_SCSI_VALID_TQ;
 1014                 spi->valid |= CTS_SPI_VALID_DISC;
 1015         } else {
 1016                 scsi->valid = 0;
 1017         }
 1018 
 1019         cts->ccb_h.status = CAM_REQ_CMP;
 1020 #else
 1021         struct  ahc_devinfo devinfo;
 1022         struct  ahc_initiator_tinfo *targ_info;
 1023         struct  ahc_tmode_tstate *tstate;
 1024         struct  ahc_transinfo *tinfo;
 1025 
 1026         ahc_compile_devinfo(&devinfo, our_id,
 1027                             cts->ccb_h.target_id,
 1028                             cts->ccb_h.target_lun,
 1029                             channel, ROLE_UNKNOWN);
 1030         targ_info = ahc_fetch_transinfo(ahc, devinfo.channel,
 1031                                         devinfo.our_scsiid,
 1032                                         devinfo.target, &tstate);
 1033         
 1034         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
 1035                 tinfo = &targ_info->curr;
 1036         else
 1037                 tinfo = &targ_info->user;
 1038         
 1039         cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
 1040         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) == 0) {
 1041                 if ((ahc->user_discenable & devinfo.target_mask) != 0)
 1042                         cts->flags |= CCB_TRANS_DISC_ENB;
 1043 
 1044                 if ((ahc->user_tagenable & devinfo.target_mask) != 0)
 1045                         cts->flags |= CCB_TRANS_TAG_ENB;
 1046         } else {
 1047                 if ((tstate->discenable & devinfo.target_mask) != 0)
 1048                         cts->flags |= CCB_TRANS_DISC_ENB;
 1049 
 1050                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 1051                         cts->flags |= CCB_TRANS_TAG_ENB;
 1052         }
 1053         cts->sync_period = tinfo->period;
 1054         cts->sync_offset = tinfo->offset;
 1055         cts->bus_width = tinfo->width;
 1056         
 1057         cts->valid = CCB_TRANS_SYNC_RATE_VALID
 1058                    | CCB_TRANS_SYNC_OFFSET_VALID
 1059                    | CCB_TRANS_BUS_WIDTH_VALID;
 1060 
 1061         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD)
 1062                 cts->valid |= CCB_TRANS_DISC_VALID|CCB_TRANS_TQ_VALID;
 1063 
 1064         cts->ccb_h.status = CAM_REQ_CMP;
 1065 #endif
 1066 }
 1067 
 1068 static void
 1069 ahc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 1070 {
 1071         struct ahc_softc *ahc;
 1072         struct cam_sim *sim;
 1073 
 1074         sim = (struct cam_sim *)callback_arg;
 1075         ahc = (struct ahc_softc *)cam_sim_softc(sim);
 1076         switch (code) {
 1077         case AC_LOST_DEVICE:
 1078         {
 1079                 struct  ahc_devinfo devinfo;
 1080                 long    s;
 1081 
 1082                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
 1083                                     xpt_path_target_id(path),
 1084                                     xpt_path_lun_id(path),
 1085                                     SIM_CHANNEL(ahc, sim),
 1086                                     ROLE_UNKNOWN);
 1087 
 1088                 /*
 1089                  * Revert to async/narrow transfers
 1090                  * for the next device.
 1091                  */
 1092                 ahc_lock(ahc, &s);
 1093                 ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
 1094                               AHC_TRANS_GOAL|AHC_TRANS_CUR, /*paused*/FALSE);
 1095                 ahc_set_syncrate(ahc, &devinfo, /*syncrate*/NULL,
 1096                                  /*period*/0, /*offset*/0, /*ppr_options*/0,
 1097                                  AHC_TRANS_GOAL|AHC_TRANS_CUR,
 1098                                  /*paused*/FALSE);
 1099                 ahc_unlock(ahc, &s);
 1100                 break;
 1101         }
 1102         default:
 1103                 break;
 1104         }
 1105 }
 1106 
 1107 static void
 1108 ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
 1109                 int error)
 1110 {
 1111         struct  scb *scb;
 1112         union   ccb *ccb;
 1113         struct  ahc_softc *ahc;
 1114         struct  ahc_initiator_tinfo *tinfo;
 1115         struct  ahc_tmode_tstate *tstate;
 1116         u_int   mask;
 1117         long    s;
 1118 
 1119         scb = (struct scb *)arg;
 1120         ccb = scb->io_ctx;
 1121         ahc = scb->ahc_softc;
 1122 
 1123         if (error != 0) {
 1124                 if (error == EFBIG)
 1125                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
 1126                 else
 1127                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
 1128                 if (nsegments != 0)
 1129                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
 1130                 ahc_lock(ahc, &s);
 1131                 ahc_free_scb(ahc, scb);
 1132                 ahc_unlock(ahc, &s);
 1133                 xpt_done(ccb);
 1134                 return;
 1135         }
 1136         if (nsegments != 0) {
 1137                 struct    ahc_dma_seg *sg;
 1138                 bus_dma_segment_t *end_seg;
 1139                 bus_dmasync_op_t op;
 1140 
 1141                 end_seg = dm_segs + nsegments;
 1142 
 1143                 /* Copy the segments into our SG list */
 1144                 sg = scb->sg_list;
 1145                 while (dm_segs < end_seg) {
 1146                         uint32_t len;
 1147 
 1148                         sg->addr = aic_htole32(dm_segs->ds_addr);
 1149                         len = dm_segs->ds_len
 1150                             | ((dm_segs->ds_addr >> 8) & 0x7F000000);
 1151                         sg->len = aic_htole32(len);
 1152                         sg++;
 1153                         dm_segs++;
 1154                 }
 1155                 
 1156                 /*
 1157                  * Note where to find the SG entries in bus space.
 1158                  * We also set the full residual flag which the 
 1159                  * sequencer will clear as soon as a data transfer
 1160                  * occurs.
 1161                  */
 1162                 scb->hscb->sgptr = aic_htole32(scb->sg_list_phys|SG_FULL_RESID);
 1163 
 1164                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 1165                         op = BUS_DMASYNC_PREREAD;
 1166                 else
 1167                         op = BUS_DMASYNC_PREWRITE;
 1168 
 1169                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
 1170 
 1171                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 1172                         struct target_data *tdata;
 1173 
 1174                         tdata = &scb->hscb->shared_data.tdata;
 1175                         tdata->target_phases |= DPHASE_PENDING;
 1176                         /*
 1177                          * CAM data direction is relative to the initiator.
 1178                          */
 1179                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 1180                                 tdata->data_phase = P_DATAOUT;
 1181                         else
 1182                                 tdata->data_phase = P_DATAIN;
 1183 
 1184                         /*
 1185                          * If the transfer is of an odd length and in the
 1186                          * "in" direction (scsi->HostBus), then it may
 1187                          * trigger a bug in the 'WideODD' feature of
 1188                          * non-Ultra2 chips.  Force the total data-length
 1189                          * to be even by adding an extra, 1 byte, SG,
 1190                          * element.  We do this even if we are not currently
 1191                          * negotiated wide as negotiation could occur before
 1192                          * this command is executed.
 1193                          */
 1194                         if ((ahc->bugs & AHC_TMODE_WIDEODD_BUG) != 0
 1195                          && (ccb->csio.dxfer_len & 0x1) != 0
 1196                          && (ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
 1197 
 1198                                 nsegments++;
 1199                                 if (nsegments > AHC_NSEG) {
 1200 
 1201                                         aic_set_transaction_status(scb,
 1202                                             CAM_REQ_TOO_BIG);
 1203                                         bus_dmamap_unload(ahc->buffer_dmat,
 1204                                                           scb->dmamap);
 1205                                         ahc_lock(ahc, &s);
 1206                                         ahc_free_scb(ahc, scb);
 1207                                         ahc_unlock(ahc, &s);
 1208                                         xpt_done(ccb);
 1209                                         return;
 1210                                 }
 1211                                 sg->addr = aic_htole32(ahc->dma_bug_buf);
 1212                                 sg->len = aic_htole32(1);
 1213                                 sg++;
 1214                         }
 1215                 }
 1216                 sg--;
 1217                 sg->len |= aic_htole32(AHC_DMA_LAST_SEG);
 1218 
 1219                 /* Copy the first SG into the "current" data pointer area */
 1220                 scb->hscb->dataptr = scb->sg_list->addr;
 1221                 scb->hscb->datacnt = scb->sg_list->len;
 1222         } else {
 1223                 scb->hscb->sgptr = aic_htole32(SG_LIST_NULL);
 1224                 scb->hscb->dataptr = 0;
 1225                 scb->hscb->datacnt = 0;
 1226         }
 1227         
 1228         scb->sg_count = nsegments;
 1229 
 1230         ahc_lock(ahc, &s);
 1231 
 1232         /*
 1233          * Last time we need to check if this SCB needs to
 1234          * be aborted.
 1235          */
 1236         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
 1237                 if (nsegments != 0)
 1238                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
 1239                 ahc_free_scb(ahc, scb);
 1240                 ahc_unlock(ahc, &s);
 1241                 xpt_done(ccb);
 1242                 return;
 1243         }
 1244 
 1245         tinfo = ahc_fetch_transinfo(ahc, SCSIID_CHANNEL(ahc, scb->hscb->scsiid),
 1246                                     SCSIID_OUR_ID(scb->hscb->scsiid),
 1247                                     SCSIID_TARGET(ahc, scb->hscb->scsiid),
 1248                                     &tstate);
 1249 
 1250         mask = SCB_GET_TARGET_MASK(ahc, scb);
 1251         scb->hscb->scsirate = tinfo->scsirate;
 1252         scb->hscb->scsioffset = tinfo->curr.offset;
 1253         if ((tstate->ultraenb & mask) != 0)
 1254                 scb->hscb->control |= ULTRAENB;
 1255 
 1256         if ((tstate->discenable & mask) != 0
 1257          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
 1258                 scb->hscb->control |= DISCENB;
 1259 
 1260         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
 1261          && (tinfo->goal.width != 0
 1262           || tinfo->goal.offset != 0
 1263           || tinfo->goal.ppr_options != 0)) {
 1264                 scb->flags |= SCB_NEGOTIATE;
 1265                 scb->hscb->control |= MK_MESSAGE;
 1266         } else if ((tstate->auto_negotiate & mask) != 0) {
 1267                 scb->flags |= SCB_AUTO_NEGOTIATE;
 1268                 scb->hscb->control |= MK_MESSAGE;
 1269         }
 1270 
 1271         LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
 1272 
 1273         ccb->ccb_h.status |= CAM_SIM_QUEUED;
 1274 
 1275         /*
 1276          * We only allow one untagged transaction
 1277          * per target in the initiator role unless
 1278          * we are storing a full busy target *lun*
 1279          * table in SCB space.
 1280          */
 1281         if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
 1282          && (ahc->flags & AHC_SCB_BTT) == 0) {
 1283                 struct scb_tailq *untagged_q;
 1284                 int target_offset;
 1285 
 1286                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
 1287                 untagged_q = &(ahc->untagged_queues[target_offset]);
 1288                 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
 1289                 scb->flags |= SCB_UNTAGGEDQ;
 1290                 if (TAILQ_FIRST(untagged_q) != scb) {
 1291                         ahc_unlock(ahc, &s);
 1292                         return;
 1293                 }
 1294         }
 1295         scb->flags |= SCB_ACTIVE;
 1296 
 1297         /*
 1298          * Timers are disabled while recovery is in progress.
 1299          */
 1300         aic_scb_timer_start(scb);
 1301 
 1302         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
 1303                 /* Define a mapping from our tag to the SCB. */
 1304                 ahc->scb_data->scbindex[scb->hscb->tag] = scb;
 1305                 ahc_pause(ahc);
 1306                 if ((ahc->flags & AHC_PAGESCBS) == 0)
 1307                         ahc_outb(ahc, SCBPTR, scb->hscb->tag);
 1308                 ahc_outb(ahc, TARG_IMMEDIATE_SCB, scb->hscb->tag);
 1309                 ahc_unpause(ahc);
 1310         } else {
 1311                 ahc_queue_scb(ahc, scb);
 1312         }
 1313 
 1314         ahc_unlock(ahc, &s);
 1315 }
 1316 
 1317 static void
 1318 ahc_poll(struct cam_sim *sim)
 1319 {
 1320         struct ahc_softc *ahc;
 1321 
 1322         ahc = (struct ahc_softc *)cam_sim_softc(sim);
 1323         ahc_intr(ahc);
 1324 }
 1325 
 1326 static void
 1327 ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
 1328                struct ccb_scsiio *csio, struct scb *scb)
 1329 {
 1330         struct hardware_scb *hscb;
 1331         struct ccb_hdr *ccb_h;
 1332         
 1333         hscb = scb->hscb;
 1334         ccb_h = &csio->ccb_h;
 1335         
 1336         csio->resid = 0;
 1337         csio->sense_resid = 0;
 1338         if (ccb_h->func_code == XPT_SCSI_IO) {
 1339                 hscb->cdb_len = csio->cdb_len;
 1340                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
 1341 
 1342                         if (hscb->cdb_len > sizeof(hscb->cdb32)
 1343                          || (ccb_h->flags & CAM_CDB_PHYS) != 0) {
 1344                                 u_long s;
 1345 
 1346                                 aic_set_transaction_status(scb,
 1347                                                            CAM_REQ_INVALID);
 1348                                 ahc_lock(ahc, &s);
 1349                                 ahc_free_scb(ahc, scb);
 1350                                 ahc_unlock(ahc, &s);
 1351                                 xpt_done((union ccb *)csio);
 1352                                 return;
 1353                         }
 1354                         if (hscb->cdb_len > 12) {
 1355                                 memcpy(hscb->cdb32, 
 1356                                        csio->cdb_io.cdb_ptr,
 1357                                        hscb->cdb_len);
 1358                                 scb->flags |= SCB_CDB32_PTR;
 1359                         } else {
 1360                                 memcpy(hscb->shared_data.cdb, 
 1361                                        csio->cdb_io.cdb_ptr,
 1362                                        hscb->cdb_len);
 1363                         }
 1364                 } else {
 1365                         if (hscb->cdb_len > 12) {
 1366                                 memcpy(hscb->cdb32, csio->cdb_io.cdb_bytes,
 1367                                        hscb->cdb_len);
 1368                                 scb->flags |= SCB_CDB32_PTR;
 1369                         } else {
 1370                                 memcpy(hscb->shared_data.cdb,
 1371                                        csio->cdb_io.cdb_bytes,
 1372                                        hscb->cdb_len);
 1373                         }
 1374                 }
 1375         }
 1376                 
 1377         /* Only use S/G if there is a transfer */
 1378         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 1379                 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
 1380                         /* We've been given a pointer to a single buffer */
 1381                         if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
 1382                                 int s;
 1383                                 int error;
 1384 
 1385                                 s = splsoftvm();
 1386                                 error = bus_dmamap_load(ahc->buffer_dmat,
 1387                                                         scb->dmamap,
 1388                                                         csio->data_ptr,
 1389                                                         csio->dxfer_len,
 1390                                                         ahc_execute_scb,
 1391                                                         scb, /*flags*/0);
 1392                                 if (error == EINPROGRESS) {
 1393                                         /*
 1394                                          * So as to maintain ordering,
 1395                                          * freeze the controller queue
 1396                                          * until our mapping is
 1397                                          * returned.
 1398                                          */
 1399                                         xpt_freeze_simq(sim,
 1400                                                         /*count*/1);
 1401                                         scb->io_ctx->ccb_h.status |=
 1402                                             CAM_RELEASE_SIMQ;
 1403                                 }
 1404                                 splx(s);
 1405                         } else {
 1406                                 struct bus_dma_segment seg;
 1407 
 1408                                 /* Pointer to physical buffer */
 1409                                 if (csio->dxfer_len > AHC_MAXTRANSFER_SIZE)
 1410                                         panic("ahc_setup_data - Transfer size "
 1411                                               "larger than can device max");
 1412 
 1413                                 seg.ds_addr =
 1414                                     (bus_addr_t)(vm_offset_t)csio->data_ptr;
 1415                                 seg.ds_len = csio->dxfer_len;
 1416                                 ahc_execute_scb(scb, &seg, 1, 0);
 1417                         }
 1418                 } else {
 1419                         struct bus_dma_segment *segs;
 1420 
 1421                         if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
 1422                                 panic("ahc_setup_data - Physical segment "
 1423                                       "pointers unsupported");
 1424 
 1425                         if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
 1426                                 panic("ahc_setup_data - Virtual segment "
 1427                                       "addresses unsupported");
 1428 
 1429                         /* Just use the segments provided */
 1430                         segs = (struct bus_dma_segment *)csio->data_ptr;
 1431                         ahc_execute_scb(scb, segs, csio->sglist_cnt, 0);
 1432                 }
 1433         } else {
 1434                 ahc_execute_scb(scb, NULL, 0, 0);
 1435         }
 1436 }
 1437 
 1438 static void
 1439 ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb)
 1440 {
 1441         union ccb *abort_ccb;
 1442 
 1443         abort_ccb = ccb->cab.abort_ccb;
 1444         switch (abort_ccb->ccb_h.func_code) {
 1445         case XPT_ACCEPT_TARGET_IO:
 1446         case XPT_IMMED_NOTIFY:
 1447         case XPT_CONT_TARGET_IO:
 1448         {
 1449                 struct ahc_tmode_tstate *tstate;
 1450                 struct ahc_tmode_lstate *lstate;
 1451                 struct ccb_hdr_slist *list;
 1452                 cam_status status;
 1453 
 1454                 status = ahc_find_tmode_devs(ahc, sim, abort_ccb, &tstate,
 1455                                              &lstate, TRUE);
 1456 
 1457                 if (status != CAM_REQ_CMP) {
 1458                         ccb->ccb_h.status = status;
 1459                         break;
 1460                 }
 1461 
 1462                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
 1463                         list = &lstate->accept_tios;
 1464                 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
 1465                         list = &lstate->immed_notifies;
 1466                 else
 1467                         list = NULL;
 1468 
 1469                 if (list != NULL) {
 1470                         struct ccb_hdr *curelm;
 1471                         int found;
 1472 
 1473                         curelm = SLIST_FIRST(list);
 1474                         found = 0;
 1475                         if (curelm == &abort_ccb->ccb_h) {
 1476                                 found = 1;
 1477                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
 1478                         } else {
 1479                                 while(curelm != NULL) {
 1480                                         struct ccb_hdr *nextelm;
 1481 
 1482                                         nextelm =
 1483                                             SLIST_NEXT(curelm, sim_links.sle);
 1484 
 1485                                         if (nextelm == &abort_ccb->ccb_h) {
 1486                                                 found = 1;
 1487                                                 SLIST_NEXT(curelm,
 1488                                                            sim_links.sle) =
 1489                                                     SLIST_NEXT(nextelm,
 1490                                                                sim_links.sle);
 1491                                                 break;
 1492                                         }
 1493                                         curelm = nextelm;
 1494                                 }
 1495                         }
 1496 
 1497                         if (found) {
 1498                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
 1499                                 xpt_done(abort_ccb);
 1500                                 ccb->ccb_h.status = CAM_REQ_CMP;
 1501                         } else {
 1502                                 xpt_print_path(abort_ccb->ccb_h.path);
 1503                                 printf("Not found\n");
 1504                                 ccb->ccb_h.status = CAM_PATH_INVALID;
 1505                         }
 1506                         break;
 1507                 }
 1508                 /* FALLTHROUGH */
 1509         }
 1510         case XPT_SCSI_IO:
 1511                 /* XXX Fully implement the hard ones */
 1512                 ccb->ccb_h.status = CAM_UA_ABORT;
 1513                 break;
 1514         default:
 1515                 ccb->ccb_h.status = CAM_REQ_INVALID;
 1516                 break;
 1517         }
 1518         xpt_done(ccb);
 1519 }
 1520 
 1521 void
 1522 ahc_send_async(struct ahc_softc *ahc, char channel, u_int target,
 1523                 u_int lun, ac_code code, void *opt_arg)
 1524 {
 1525         struct  ccb_trans_settings cts;
 1526         struct cam_path *path;
 1527         void *arg;
 1528         int error;
 1529 
 1530         arg = NULL;
 1531         error = ahc_create_path(ahc, channel, target, lun, &path);
 1532 
 1533         if (error != CAM_REQ_CMP)
 1534                 return;
 1535 
 1536         switch (code) {
 1537         case AC_TRANSFER_NEG:
 1538         {
 1539 #ifdef AHC_NEW_TRAN_SETTINGS
 1540                 struct  ccb_trans_settings_scsi *scsi;
 1541         
 1542                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
 1543                 scsi = &cts.proto_specific.scsi;
 1544 #else
 1545                 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
 1546 #endif
 1547                 cts.ccb_h.path = path;
 1548                 cts.ccb_h.target_id = target;
 1549                 cts.ccb_h.target_lun = lun;
 1550                 ahc_get_tran_settings(ahc, channel == 'A' ? ahc->our_id
 1551                                                           : ahc->our_id_b,
 1552                                       channel, &cts);
 1553                 arg = &cts;
 1554 #ifdef AHC_NEW_TRAN_SETTINGS
 1555                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
 1556                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 1557 #else
 1558                 cts.valid &= ~CCB_TRANS_TQ_VALID;
 1559                 cts.flags &= ~CCB_TRANS_TAG_ENB;
 1560 #endif
 1561                 if (opt_arg == NULL)
 1562                         break;
 1563                 if (*((ahc_queue_alg *)opt_arg) == AHC_QUEUE_TAGGED)
 1564 #ifdef AHC_NEW_TRAN_SETTINGS
 1565                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
 1566                 scsi->valid |= CTS_SCSI_VALID_TQ;
 1567 #else
 1568                         cts.flags |= CCB_TRANS_TAG_ENB;
 1569                 cts.valid |= CCB_TRANS_TQ_VALID;
 1570 #endif
 1571                 break;
 1572         }
 1573         case AC_SENT_BDR:
 1574         case AC_BUS_RESET:
 1575                 break;
 1576         default:
 1577                 panic("ahc_send_async: Unexpected async event");
 1578         }
 1579         xpt_async(code, path, arg);
 1580         xpt_free_path(path);
 1581 }
 1582 
 1583 void
 1584 ahc_platform_set_tags(struct ahc_softc *ahc,
 1585                       struct ahc_devinfo *devinfo, int enable)
 1586 {
 1587 }
 1588 
 1589 int
 1590 ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
 1591 {
 1592         ahc->platform_data = malloc(sizeof(struct ahc_platform_data), M_DEVBUF,
 1593             M_NOWAIT | M_ZERO);
 1594         if (ahc->platform_data == NULL)
 1595                 return (ENOMEM);
 1596         return (0);
 1597 }
 1598 
 1599 void
 1600 ahc_platform_free(struct ahc_softc *ahc)
 1601 {
 1602         struct ahc_platform_data *pdata;
 1603 
 1604         pdata = ahc->platform_data;
 1605         if (pdata != NULL) {
 1606                 if (pdata->regs != NULL)
 1607                         bus_release_resource(ahc->dev_softc,
 1608                                              pdata->regs_res_type,
 1609                                              pdata->regs_res_id,
 1610                                              pdata->regs);
 1611 
 1612                 if (pdata->irq != NULL)
 1613                         bus_release_resource(ahc->dev_softc,
 1614                                              pdata->irq_res_type,
 1615                                              0, pdata->irq);
 1616 
 1617                 if (pdata->sim_b != NULL) {
 1618                         xpt_async(AC_LOST_DEVICE, pdata->path_b, NULL);
 1619                         xpt_free_path(pdata->path_b);
 1620                         xpt_bus_deregister(cam_sim_path(pdata->sim_b));
 1621                         cam_sim_free(pdata->sim_b, /*free_devq*/TRUE);
 1622                 }
 1623                 if (pdata->sim != NULL) {
 1624                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
 1625                         xpt_free_path(pdata->path);
 1626                         xpt_bus_deregister(cam_sim_path(pdata->sim));
 1627                         cam_sim_free(pdata->sim, /*free_devq*/TRUE);
 1628                 }
 1629                 if (pdata->eh != NULL)
 1630                         EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
 1631                 free(ahc->platform_data, M_DEVBUF);
 1632         }
 1633 }
 1634 
 1635 int
 1636 ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc)
 1637 {
 1638         /* We don't sort softcs under FreeBSD so report equal always */
 1639         return (0);
 1640 }
 1641 
 1642 int
 1643 ahc_detach(device_t dev)
 1644 {
 1645         struct ahc_softc *ahc;
 1646         u_long l;
 1647         u_long s;
 1648 
 1649         ahc_list_lock(&l);
 1650         device_printf(dev, "detaching device\n");
 1651         ahc = device_get_softc(dev);
 1652         ahc = ahc_find_softc(ahc);
 1653         if (ahc == NULL) {
 1654                 device_printf(dev, "aic7xxx already detached\n");
 1655                 ahc_list_unlock(&l);
 1656                 return (ENOENT);
 1657         }
 1658         TAILQ_REMOVE(&ahc_tailq, ahc, links);
 1659         ahc_list_unlock(&l);
 1660         ahc_lock(ahc, &s);
 1661         ahc_intr_enable(ahc, FALSE);
 1662         bus_teardown_intr(dev, ahc->platform_data->irq, ahc->platform_data->ih);
 1663         ahc_unlock(ahc, &s);
 1664         ahc_free(ahc);
 1665         return (0);
 1666 }
 1667 
 1668 #if UNUSED
 1669 static void
 1670 ahc_dump_targcmd(struct target_cmd *cmd)
 1671 {
 1672         uint8_t *byte;
 1673         uint8_t *last_byte;
 1674         int i;
 1675 
 1676         byte = &cmd->initiator_channel;
 1677         /* Debugging info for received commands */
 1678         last_byte = &cmd[1].initiator_channel;
 1679 
 1680         i = 0;
 1681         while (byte < last_byte) {
 1682                 if (i == 0)
 1683                         printf("\t");
 1684                 printf("%#x", *byte++);
 1685                 i++;
 1686                 if (i == 8) {
 1687                         printf("\n");
 1688                         i = 0;
 1689                 } else {
 1690                         printf(", ");
 1691                 }
 1692         }
 1693 }
 1694 #endif
 1695 
 1696 static int
 1697 ahc_modevent(module_t mod, int type, void *data)
 1698 {
 1699         /* XXX Deal with busy status on unload. */
 1700         /* XXX Deal with unknown events */
 1701         return 0;
 1702 }
 1703   
 1704 static moduledata_t ahc_mod = {
 1705         "ahc",
 1706         ahc_modevent,
 1707         NULL
 1708 };
 1709 
 1710 DECLARE_MODULE(ahc, ahc_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
 1711 MODULE_DEPEND(ahc, cam, 1, 1, 1);
 1712 MODULE_VERSION(ahc, 1);

Cache object: 80c3c31784478a78fa889f8c36e14c56


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