sys/dev/aic7xxx/aic7xxx_osm.c

   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("$FreeBSD$");
  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 0
  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 static int
  74 ahc_create_path(struct ahc_softc *ahc, char channel, u_int target,
  75                 u_int lun, struct cam_path **path)
  76 {
  77         path_id_t path_id;
  78
  79         if (channel == 'B')
  80                 path_id = cam_sim_path(ahc->platform_data->sim_b);
  81         else
  82                 path_id = cam_sim_path(ahc->platform_data->sim);
  83
  84         return (xpt_create_path(path, /*periph*/NULL,
  85                                 path_id, target, lun));
  86 }
  87
  88 int
  89 ahc_map_int(struct ahc_softc *ahc)
  90 {
  91         int error;
  92         int zero;
  93         int shareable;
  94
  95         zero = 0;
  96         shareable = (ahc->flags & AHC_EDGE_INTERRUPT) ? 0: RF_SHAREABLE;
  97         ahc->platform_data->irq =
  98             bus_alloc_resource_any(ahc->dev_softc, SYS_RES_IRQ, &zero,
  99                                    RF_ACTIVE | shareable);
 100         if (ahc->platform_data->irq == NULL) {
 101                 device_printf(ahc->dev_softc,
 102                               "bus_alloc_resource() failed to allocate IRQ\n");
 103                 return (ENOMEM);
 104         }
 105         ahc->platform_data->irq_res_type = SYS_RES_IRQ;
 106
 107         /* Hook up our interrupt handler */
 108         error = bus_setup_intr(ahc->dev_softc, ahc->platform_data->irq,
 109                                INTR_TYPE_CAM|INTR_MPSAFE, NULL,
 110                                ahc_platform_intr, ahc, &ahc->platform_data->ih);
 111
 112         if (error != 0)
 113                 device_printf(ahc->dev_softc, "bus_setup_intr() failed: %d\n",
 114                               error);
 115         return (error);
 116 }
 117
 118 int
 119 aic7770_map_registers(struct ahc_softc *ahc, u_int unused_ioport_arg)
 120 {
 121         struct  resource *regs;
 122         int     rid;
 123
 124         rid = 0;
 125         regs = bus_alloc_resource_any(ahc->dev_softc, SYS_RES_IOPORT, &rid,
 126                                       RF_ACTIVE);
 127         if (regs == NULL) {
 128                 device_printf(ahc->dev_softc, "Unable to map I/O space?!\n");
 129                 return ENOMEM;
 130         }
 131         ahc->platform_data->regs_res_type = SYS_RES_IOPORT;
 132         ahc->platform_data->regs_res_id = rid;
 133         ahc->platform_data->regs = regs;
 134         ahc->tag = rman_get_bustag(regs);
 135         ahc->bsh = rman_get_bushandle(regs);
 136         return (0);
 137 }
 138
 139 /*
 140  * Attach all the sub-devices we can find
 141  */
 142 int
 143 ahc_attach(struct ahc_softc *ahc)
 144 {
 145         char   ahc_info[256];
 146         struct ccb_setasync csa;
 147         struct cam_devq *devq;
 148         int bus_id;
 149         int bus_id2;
 150         struct cam_sim *sim;
 151         struct cam_sim *sim2;
 152         struct cam_path *path;
 153         struct cam_path *path2;
 154         int count;
 155
 156         count = 0;
 157         sim = NULL;
 158         sim2 = NULL;
 159         path = NULL;
 160         path2 = 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);
 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                             &ahc->platform_data->mtx, 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, ahc->dev_softc, 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),
 229                                     &ahc->platform_data->mtx, 1,
 230                                     AHC_MAX_QUEUE, devq);
 231
 232                 if (sim2 == NULL) {
 233                         printf("ahc_attach: Unable to attach second "
 234                                "bus due to resource shortage");
 235                         goto fail;
 236                 }
 237
 238                 if (xpt_bus_register(sim2, ahc->dev_softc, bus_id2) !=
 239                     CAM_SUCCESS) {
 240                         printf("ahc_attach: Unable to attach second "
 241                                "bus due to resource shortage");
 242                         /*
 243                          * We do not want to destroy the device queue
 244                          * because the first bus is using it.
 245                          */
 246                         cam_sim_free(sim2, /*free_devq*/FALSE);
 247                         goto fail;
 248                 }
 249
 250                 if (xpt_create_path(&path2, /*periph*/NULL,
 251                                     cam_sim_path(sim2),
 252                                     CAM_TARGET_WILDCARD,
 253                                     CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 254                         xpt_bus_deregister(cam_sim_path(sim2));
 255                         cam_sim_free(sim2, /*free_devq*/FALSE);
 256                         sim2 = NULL;
 257                         goto fail;
 258                 }
 259                 xpt_setup_ccb(&csa.ccb_h, path2, /*priority*/5);
 260                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 261                 csa.event_enable = AC_LOST_DEVICE;
 262                 csa.callback = ahc_async;
 263                 csa.callback_arg = sim2;
 264                 xpt_action((union ccb *)&csa);
 265                 count++;
 266         }
 267
 268 fail:
 269         if ((ahc->features & AHC_TWIN) != 0
 270          && (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
 271                 ahc->platform_data->sim_b = sim;
 272                 ahc->platform_data->path_b = path;
 273                 ahc->platform_data->sim = sim2;
 274                 ahc->platform_data->path = path2;
 275         } else {
 276                 ahc->platform_data->sim = sim;
 277                 ahc->platform_data->path = path;
 278                 ahc->platform_data->sim_b = sim2;
 279                 ahc->platform_data->path_b = path2;
 280         }
 281         ahc_unlock(ahc);
 282
 283         if (count != 0) {
 284                 /* We have to wait until after any system dumps... */
 285                 ahc->platform_data->eh =
 286                     EVENTHANDLER_REGISTER(shutdown_final, ahc_shutdown,
 287                                           ahc, SHUTDOWN_PRI_DEFAULT);
 288                 ahc_intr_enable(ahc, TRUE);
 289         }
 290
 291         return (count);
 292 }
 293
 294 /*
 295  * Catch an interrupt from the adapter
 296  */
 297 void
 298 ahc_platform_intr(void *arg)
 299 {
 300         struct  ahc_softc *ahc;
 301
 302         ahc = (struct ahc_softc *)arg;
 303         ahc_lock(ahc);
 304         ahc_intr(ahc);
 305         ahc_unlock(ahc);
 306 }
 307
 308 /*
 309  * We have an scb which has been processed by the
 310  * adaptor, now we look to see how the operation
 311  * went.
 312  */
 313 void
 314 ahc_done(struct ahc_softc *ahc, struct scb *scb)
 315 {
 316         union ccb *ccb;
 317
 318         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
 319                   ("ahc_done - scb %d\n", scb->hscb->tag));
 320
 321         ccb = scb->io_ctx;
 322         LIST_REMOVE(scb, pending_links);
 323         if ((scb->flags & SCB_TIMEDOUT) != 0)
 324                 LIST_REMOVE(scb, timedout_links);
 325         if ((scb->flags & SCB_UNTAGGEDQ) != 0) {
 326                 struct scb_tailq *untagged_q;
 327                 int target_offset;
 328
 329                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
 330                 untagged_q = &ahc->untagged_queues[target_offset];
 331                 TAILQ_REMOVE(untagged_q, scb, links.tqe);
 332                 scb->flags &= ~SCB_UNTAGGEDQ;
 333                 ahc_run_untagged_queue(ahc, untagged_q);
 334         }
 335
 336         callout_stop(&scb->io_timer);
 337
 338         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 339                 bus_dmasync_op_t op;
 340
 341                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 342                         op = BUS_DMASYNC_POSTREAD;
 343                 else
 344                         op = BUS_DMASYNC_POSTWRITE;
 345                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
 346                 bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
 347         }
 348
 349         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 350                 struct cam_path *ccb_path;
 351
 352                 /*
 353                  * If we have finally disconnected, clean up our
 354                  * pending device state.
 355                  * XXX - There may be error states that cause where
 356                  *       we will remain connected.
 357                  */
 358                 ccb_path = ccb->ccb_h.path;
 359                 if (ahc->pending_device != NULL
 360                  && xpt_path_comp(ahc->pending_device->path, ccb_path) == 0) {
 361                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 362                                 ahc->pending_device = NULL;
 363                         } else {
 364                                 if (bootverbose) {
 365                                         xpt_print_path(ccb->ccb_h.path);
 366                                         printf("Still connected\n");
 367                                 }
 368                                 aic_freeze_ccb(ccb);
 369                         }
 370                 }
 371
 372                 if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
 373                         ccb->ccb_h.status |= CAM_REQ_CMP;
 374                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 375                 ahc_free_scb(ahc, scb);
 376                 xpt_done(ccb);
 377                 return;
 378         }
 379
 380         /*
 381          * If the recovery SCB completes, we have to be
 382          * out of our timeout.
 383          */
 384         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
 385                 struct  scb *list_scb;
 386
 387                 ahc->scb_data->recovery_scbs--;
 388
 389                 if (aic_get_transaction_status(scb) == CAM_BDR_SENT
 390                  || aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
 391                         aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
 392
 393                 if (ahc->scb_data->recovery_scbs == 0) {
 394                         /*
 395                          * All recovery actions have completed successfully,
 396                          * so reinstate the timeouts for all other pending
 397                          * commands.
 398                          */
 399                         LIST_FOREACH(list_scb, &ahc->pending_scbs,
 400                                      pending_links) {
 401                                 aic_scb_timer_reset(list_scb,
 402                                                     aic_get_timeout(scb));
 403                         }
 404
 405                         ahc_print_path(ahc, scb);
 406                         printf("no longer in timeout, status = %x\n",
 407                                ccb->ccb_h.status);
 408                 }
 409         }
 410
 411         /* Don't clobber any existing error state */
 412         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
 413                 ccb->ccb_h.status |= CAM_REQ_CMP;
 414         } else if ((scb->flags & SCB_SENSE) != 0) {
 415                 /*
 416                  * We performed autosense retrieval.
 417                  *
 418                  * Zero any sense not transferred by the
 419                  * device.  The SCSI spec mandates that any
 420                  * untransfered data should be assumed to be
 421                  * zero.  Complete the 'bounce' of sense information
 422                  * through buffers accessible via bus-space by
 423                  * copying it into the clients csio.
 424                  */
 425                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 426                 memcpy(&ccb->csio.sense_data,
 427                        ahc_get_sense_buf(ahc, scb),
 428                        (aic_le32toh(scb->sg_list->len) & AHC_SG_LEN_MASK)
 429                        - ccb->csio.sense_resid);
 430                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 431         }
 432         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 433         ahc_free_scb(ahc, scb);
 434         xpt_done(ccb);
 435 }
 436
 437 static void
 438 ahc_action(struct cam_sim *sim, union ccb *ccb)
 439 {
 440         struct  ahc_softc *ahc;
 441         struct  ahc_tmode_lstate *lstate;
 442         u_int   target_id;
 443         u_int   our_id;
 444
 445         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahc_action\n"));
 446
 447         ahc = (struct ahc_softc *)cam_sim_softc(sim);
 448
 449         target_id = ccb->ccb_h.target_id;
 450         our_id = SIM_SCSI_ID(ahc, sim);
 451
 452         switch (ccb->ccb_h.func_code) {
 453         /* Common cases first */
 454         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 455         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 456         {
 457                 struct     ahc_tmode_tstate *tstate;
 458                 cam_status status;
 459
 460                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
 461                                              &lstate, TRUE);
 462
 463                 if (status != CAM_REQ_CMP) {
 464                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 465                                 /* Response from the black hole device */
 466                                 tstate = NULL;
 467                                 lstate = ahc->black_hole;
 468                         } else {
 469                                 ccb->ccb_h.status = status;
 470                                 xpt_done(ccb);
 471                                 break;
 472                         }
 473                 }
 474                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 475                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 476                                           sim_links.sle);
 477                         ccb->ccb_h.status = CAM_REQ_INPROG;
 478                         if ((ahc->flags & AHC_TQINFIFO_BLOCKED) != 0)
 479                                 ahc_run_tqinfifo(ahc, /*paused*/FALSE);
 480                         break;
 481                 }
 482
 483                 /*
 484                  * The target_id represents the target we attempt to
 485                  * select.  In target mode, this is the initiator of
 486                  * the original command.
 487                  */
 488                 our_id = target_id;
 489                 target_id = ccb->csio.init_id;
 490                 /* FALLTHROUGH */
 491         }
 492         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 493         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 494         {
 495                 struct  scb *scb;
 496                 struct  hardware_scb *hscb;
 497
 498                 if ((ahc->flags & AHC_INITIATORROLE) == 0
 499                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 500                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 501                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 502                         xpt_done(ccb);
 503                         return;
 504                 }
 505
 506                 /*
 507                  * get an scb to use.
 508                  */
 509                 if ((scb = ahc_get_scb(ahc)) == NULL) {
 510                         xpt_freeze_simq(sim, /*count*/1);
 511                         ahc->flags |= AHC_RESOURCE_SHORTAGE;
 512                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 513                         xpt_done(ccb);
 514                         return;
 515                 }
 516
 517                 hscb = scb->hscb;
 518
 519                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 520                           ("start scb(%p)\n", scb));
 521                 scb->io_ctx = ccb;
 522                 /*
 523                  * So we can find the SCB when an abort is requested
 524                  */
 525                 ccb->ccb_h.ccb_scb_ptr = scb;
 526
 527                 /*
 528                  * Put all the arguments for the xfer in the scb
 529                  */
 530                 hscb->control = 0;
 531                 hscb->scsiid = BUILD_SCSIID(ahc, sim, target_id, our_id);
 532                 hscb->lun = ccb->ccb_h.target_lun;
 533                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 534                         hscb->cdb_len = 0;
 535                         scb->flags |= SCB_DEVICE_RESET;
 536                         hscb->control |= MK_MESSAGE;
 537                         ahc_execute_scb(scb, NULL, 0, 0);
 538                 } else {
 539                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 540                                 struct target_data *tdata;
 541
 542                                 tdata = &hscb->shared_data.tdata;
 543                                 if (ahc->pending_device == lstate)
 544                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 545                                 hscb->control |= TARGET_SCB;
 546                                 scb->flags |= SCB_TARGET_SCB;
 547                                 tdata->target_phases = 0;
 548                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 549                                         tdata->target_phases |= SPHASE_PENDING;
 550                                         tdata->scsi_status =
 551                                             ccb->csio.scsi_status;
 552                                 }
 553                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 554                                         tdata->target_phases |= NO_DISCONNECT;
 555
 556                                 tdata->initiator_tag = ccb->csio.tag_id;
 557                         }
 558                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 559                                 hscb->control |= ccb->csio.tag_action;
 560
 561                         ahc_setup_data(ahc, sim, &ccb->csio, scb);
 562                 }
 563                 break;
 564         }
 565         case XPT_NOTIFY_ACKNOWLEDGE:
 566         case XPT_IMMEDIATE_NOTIFY:
 567         {
 568                 struct     ahc_tmode_tstate *tstate;
 569                 struct     ahc_tmode_lstate *lstate;
 570                 cam_status status;
 571
 572                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
 573                                              &lstate, TRUE);
 574
 575                 if (status != CAM_REQ_CMP) {
 576                         ccb->ccb_h.status = status;
 577                         xpt_done(ccb);
 578                         break;
 579                 }
 580                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 581                                   sim_links.sle);
 582                 ccb->ccb_h.status = CAM_REQ_INPROG;
 583                 ahc_send_lstate_events(ahc, lstate);
 584                 break;
 585         }
 586         case XPT_EN_LUN:                /* Enable LUN as a target */
 587                 ahc_handle_en_lun(ahc, sim, ccb);
 588                 xpt_done(ccb);
 589                 break;
 590         case XPT_ABORT:                 /* Abort the specified CCB */
 591         {
 592                 ahc_abort_ccb(ahc, sim, ccb);
 593                 break;
 594         }
 595         case XPT_SET_TRAN_SETTINGS:
 596         {
 597                 struct  ahc_devinfo devinfo;
 598                 struct  ccb_trans_settings *cts;
 599                 struct  ccb_trans_settings_scsi *scsi;
 600                 struct  ccb_trans_settings_spi *spi;
 601                 struct  ahc_initiator_tinfo *tinfo;
 602                 struct  ahc_tmode_tstate *tstate;
 603                 uint16_t *discenable;
 604                 uint16_t *tagenable;
 605                 u_int   update_type;
 606
 607                 cts = &ccb->cts;
 608                 scsi = &cts->proto_specific.scsi;
 609                 spi = &cts->xport_specific.spi;
 610                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
 611                                     cts->ccb_h.target_id,
 612                                     cts->ccb_h.target_lun,
 613                                     SIM_CHANNEL(ahc, sim),
 614                                     ROLE_UNKNOWN);
 615                 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
 616                                             devinfo.our_scsiid,
 617                                             devinfo.target, &tstate);
 618                 update_type = 0;
 619                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 620                         update_type |= AHC_TRANS_GOAL;
 621                         discenable = &tstate->discenable;
 622                         tagenable = &tstate->tagenable;
 623                         tinfo->curr.protocol_version =
 624                             cts->protocol_version;
 625                         tinfo->curr.transport_version =
 626                             cts->transport_version;
 627                         tinfo->goal.protocol_version =
 628                             cts->protocol_version;
 629                         tinfo->goal.transport_version =
 630                             cts->transport_version;
 631                 } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 632                         update_type |= AHC_TRANS_USER;
 633                         discenable = &ahc->user_discenable;
 634                         tagenable = &ahc->user_tagenable;
 635                         tinfo->user.protocol_version =
 636                             cts->protocol_version;
 637                         tinfo->user.transport_version =
 638                             cts->transport_version;
 639                 } else {
 640                         ccb->ccb_h.status = CAM_REQ_INVALID;
 641                         xpt_done(ccb);
 642                         break;
 643                 }
 644
 645                 if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 646                         if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 647                                 *discenable |= devinfo.target_mask;
 648                         else
 649                                 *discenable &= ~devinfo.target_mask;
 650                 }
 651
 652                 if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 653                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 654                                 *tagenable |= devinfo.target_mask;
 655                         else
 656                                 *tagenable &= ~devinfo.target_mask;
 657                 }
 658
 659                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 660                         ahc_validate_width(ahc, /*tinfo limit*/NULL,
 661                                            &spi->bus_width, ROLE_UNKNOWN);
 662                         ahc_set_width(ahc, &devinfo, spi->bus_width,
 663                                       update_type, /*paused*/FALSE);
 664                 }
 665
 666                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 667                         if (update_type == AHC_TRANS_USER)
 668                                 spi->ppr_options = tinfo->user.ppr_options;
 669                         else
 670                                 spi->ppr_options = tinfo->goal.ppr_options;
 671                 }
 672
 673                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 674                         if (update_type == AHC_TRANS_USER)
 675                                 spi->sync_offset = tinfo->user.offset;
 676                         else
 677                                 spi->sync_offset = tinfo->goal.offset;
 678                 }
 679
 680                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 681                         if (update_type == AHC_TRANS_USER)
 682                                 spi->sync_period = tinfo->user.period;
 683                         else
 684                                 spi->sync_period = tinfo->goal.period;
 685                 }
 686
 687                 if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 688                  || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 689                         struct ahc_syncrate *syncrate;
 690                         u_int maxsync;
 691
 692                         if ((ahc->features & AHC_ULTRA2) != 0)
 693                                 maxsync = AHC_SYNCRATE_DT;
 694                         else if ((ahc->features & AHC_ULTRA) != 0)
 695                                 maxsync = AHC_SYNCRATE_ULTRA;
 696                         else
 697                                 maxsync = AHC_SYNCRATE_FAST;
 698
 699                         if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 700                                 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 701
 702                         syncrate = ahc_find_syncrate(ahc, &spi->sync_period,
 703                                                      &spi->ppr_options,
 704                                                      maxsync);
 705                         ahc_validate_offset(ahc, /*tinfo limit*/NULL,
 706                                             syncrate, &spi->sync_offset,
 707                                             spi->bus_width, ROLE_UNKNOWN);
 708
 709                         /* We use a period of 0 to represent async */
 710                         if (spi->sync_offset == 0) {
 711                                 spi->sync_period = 0;
 712                                 spi->ppr_options = 0;
 713                         }
 714
 715                         ahc_set_syncrate(ahc, &devinfo, syncrate,
 716                                          spi->sync_period, spi->sync_offset,
 717                                          spi->ppr_options, update_type,
 718                                          /*paused*/FALSE);
 719                 }
 720                 ccb->ccb_h.status = CAM_REQ_CMP;
 721                 xpt_done(ccb);
 722                 break;
 723         }
 724         case XPT_GET_TRAN_SETTINGS:
 725         /* Get default/user set transfer settings for the target */
 726         {
 727                 ahc_get_tran_settings(ahc, SIM_SCSI_ID(ahc, sim),
 728                                       SIM_CHANNEL(ahc, sim), &ccb->cts);
 729                 xpt_done(ccb);
 730                 break;
 731         }
 732         case XPT_CALC_GEOMETRY:
 733         {
 734                 int extended;
 735
 736                 extended = SIM_IS_SCSIBUS_B(ahc, sim)
 737                          ? ahc->flags & AHC_EXTENDED_TRANS_B
 738                          : ahc->flags & AHC_EXTENDED_TRANS_A;
 739                 aic_calc_geometry(&ccb->ccg, extended);
 740                 xpt_done(ccb);
 741                 break;
 742         }
 743         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 744         {
 745                 int  found;
 746
 747                 found = ahc_reset_channel(ahc, SIM_CHANNEL(ahc, sim),
 748                                           /*initiate reset*/TRUE);
 749                 if (bootverbose) {
 750                         xpt_print_path(SIM_PATH(ahc, sim));
 751                         printf("SCSI bus reset delivered. "
 752                                "%d SCBs aborted.\n", found);
 753                 }
 754                 ccb->ccb_h.status = CAM_REQ_CMP;
 755                 xpt_done(ccb);
 756                 break;
 757         }
 758         case XPT_TERM_IO:               /* Terminate the I/O process */
 759                 /* XXX Implement */
 760                 ccb->ccb_h.status = CAM_REQ_INVALID;
 761                 xpt_done(ccb);
 762                 break;
 763         case XPT_PATH_INQ:              /* Path routing inquiry */
 764         {
 765                 struct ccb_pathinq *cpi = &ccb->cpi;
 766
 767                 cpi->version_num = 1; /* XXX??? */
 768                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 769                 if ((ahc->features & AHC_WIDE) != 0)
 770                         cpi->hba_inquiry |= PI_WIDE_16;
 771                 if ((ahc->features & AHC_TARGETMODE) != 0) {
 772                         cpi->target_sprt = PIT_PROCESSOR
 773                                          | PIT_DISCONNECT
 774                                          | PIT_TERM_IO;
 775                 } else {
 776                         cpi->target_sprt = 0;
 777                 }
 778                 cpi->hba_misc = 0;
 779                 cpi->hba_eng_cnt = 0;
 780                 cpi->max_target = (ahc->features & AHC_WIDE) ? 15 : 7;
 781                 cpi->max_lun = AHC_NUM_LUNS - 1;
 782                 if (SIM_IS_SCSIBUS_B(ahc, sim)) {
 783                         cpi->initiator_id = ahc->our_id_b;
 784                         if ((ahc->flags & AHC_RESET_BUS_B) == 0)
 785                                 cpi->hba_misc |= PIM_NOBUSRESET;
 786                 } else {
 787                         cpi->initiator_id = ahc->our_id;
 788                         if ((ahc->flags & AHC_RESET_BUS_A) == 0)
 789                                 cpi->hba_misc |= PIM_NOBUSRESET;
 790                 }
 791                 cpi->bus_id = cam_sim_bus(sim);
 792                 cpi->base_transfer_speed = 3300;
 793                 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 794                 strlcpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 795                 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 796                 cpi->unit_number = cam_sim_unit(sim);
 797                 cpi->protocol = PROTO_SCSI;
 798                 cpi->protocol_version = SCSI_REV_2;
 799                 cpi->transport = XPORT_SPI;
 800                 cpi->transport_version = 2;
 801                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
 802                 if ((ahc->features & AHC_DT) != 0) {
 803                         cpi->transport_version = 3;
 804                         cpi->xport_specific.spi.ppr_options =
 805                             SID_SPI_CLOCK_DT_ST;
 806                 }
 807                 cpi->ccb_h.status = CAM_REQ_CMP;
 808                 xpt_done(ccb);
 809                 break;
 810         }
 811         default:
 812                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 813                 xpt_done(ccb);
 814                 break;
 815         }
 816 }
 817
 818 static void
 819 ahc_get_tran_settings(struct ahc_softc *ahc, int our_id, char channel,
 820                       struct ccb_trans_settings *cts)
 821 {
 822         struct  ahc_devinfo devinfo;
 823         struct  ccb_trans_settings_scsi *scsi;
 824         struct  ccb_trans_settings_spi *spi;
 825         struct  ahc_initiator_tinfo *targ_info;
 826         struct  ahc_tmode_tstate *tstate;
 827         struct  ahc_transinfo *tinfo;
 828
 829         scsi = &cts->proto_specific.scsi;
 830         spi = &cts->xport_specific.spi;
 831         ahc_compile_devinfo(&devinfo, our_id,
 832                             cts->ccb_h.target_id,
 833                             cts->ccb_h.target_lun,
 834                             channel, ROLE_UNKNOWN);
 835         targ_info = ahc_fetch_transinfo(ahc, devinfo.channel,
 836                                         devinfo.our_scsiid,
 837                                         devinfo.target, &tstate);
 838
 839         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 840                 tinfo = &targ_info->curr;
 841         else
 842                 tinfo = &targ_info->user;
 843
 844         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 845         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 846         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 847                 if ((ahc->user_discenable & devinfo.target_mask) != 0)
 848                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 849
 850                 if ((ahc->user_tagenable & devinfo.target_mask) != 0)
 851                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 852         } else {
 853                 if ((tstate->discenable & devinfo.target_mask) != 0)
 854                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 855
 856                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 857                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 858         }
 859         cts->protocol_version = tinfo->protocol_version;
 860         cts->transport_version = tinfo->transport_version;
 861
 862         spi->sync_period = tinfo->period;
 863         spi->sync_offset = tinfo->offset;
 864         spi->bus_width = tinfo->width;
 865         spi->ppr_options = tinfo->ppr_options;
 866
 867         cts->protocol = PROTO_SCSI;
 868         cts->transport = XPORT_SPI;
 869         spi->valid = CTS_SPI_VALID_SYNC_RATE
 870                    | CTS_SPI_VALID_SYNC_OFFSET
 871                    | CTS_SPI_VALID_BUS_WIDTH
 872                    | CTS_SPI_VALID_PPR_OPTIONS;
 873
 874         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 875                 scsi->valid = CTS_SCSI_VALID_TQ;
 876                 spi->valid |= CTS_SPI_VALID_DISC;
 877         } else {
 878                 scsi->valid = 0;
 879         }
 880
 881         cts->ccb_h.status = CAM_REQ_CMP;
 882 }
 883
 884 static void
 885 ahc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 886 {
 887         struct ahc_softc *ahc;
 888         struct cam_sim *sim;
 889
 890         sim = (struct cam_sim *)callback_arg;
 891         ahc = (struct ahc_softc *)cam_sim_softc(sim);
 892         switch (code) {
 893         case AC_LOST_DEVICE:
 894         {
 895                 struct  ahc_devinfo devinfo;
 896
 897                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
 898                                     xpt_path_target_id(path),
 899                                     xpt_path_lun_id(path),
 900                                     SIM_CHANNEL(ahc, sim),
 901                                     ROLE_UNKNOWN);
 902
 903                 /*
 904                  * Revert to async/narrow transfers
 905                  * for the next device.
 906                  */
 907                 ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
 908                               AHC_TRANS_GOAL|AHC_TRANS_CUR, /*paused*/FALSE);
 909                 ahc_set_syncrate(ahc, &devinfo, /*syncrate*/NULL,
 910                                  /*period*/0, /*offset*/0, /*ppr_options*/0,
 911                                  AHC_TRANS_GOAL|AHC_TRANS_CUR,
 912                                  /*paused*/FALSE);
 913                 break;
 914         }
 915         default:
 916                 break;
 917         }
 918 }
 919
 920 static void
 921 ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
 922                 int error)
 923 {
 924         struct  scb *scb;
 925         union   ccb *ccb;
 926         struct  ahc_softc *ahc;
 927         struct  ahc_initiator_tinfo *tinfo;
 928         struct  ahc_tmode_tstate *tstate;
 929         u_int   mask;
 930
 931         scb = (struct scb *)arg;
 932         ccb = scb->io_ctx;
 933         ahc = scb->ahc_softc;
 934
 935         if (error != 0) {
 936                 if (error == EFBIG)
 937                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
 938                 else
 939                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
 940                 if (nsegments != 0)
 941                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
 942                 ahc_free_scb(ahc, scb);
 943                 xpt_done(ccb);
 944                 return;
 945         }
 946         if (nsegments != 0) {
 947                 struct    ahc_dma_seg *sg;
 948                 bus_dma_segment_t *end_seg;
 949                 bus_dmasync_op_t op;
 950
 951                 end_seg = dm_segs + nsegments;
 952
 953                 /* Copy the segments into our SG list */
 954                 sg = scb->sg_list;
 955                 while (dm_segs < end_seg) {
 956                         uint32_t len;
 957
 958                         sg->addr = aic_htole32(dm_segs->ds_addr);
 959                         len = dm_segs->ds_len
 960                             | ((dm_segs->ds_addr >> 8) & 0x7F000000);
 961                         sg->len = aic_htole32(len);
 962                         sg++;
 963                         dm_segs++;
 964                 }
 965
 966                 /*
 967                  * Note where to find the SG entries in bus space.
 968                  * We also set the full residual flag which the
 969                  * sequencer will clear as soon as a data transfer
 970                  * occurs.
 971                  */
 972                 scb->hscb->sgptr = aic_htole32(scb->sg_list_phys|SG_FULL_RESID);
 973
 974                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 975                         op = BUS_DMASYNC_PREREAD;
 976                 else
 977                         op = BUS_DMASYNC_PREWRITE;
 978
 979                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
 980
 981                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 982                         struct target_data *tdata;
 983
 984                         tdata = &scb->hscb->shared_data.tdata;
 985                         tdata->target_phases |= DPHASE_PENDING;
 986                         /*
 987                          * CAM data direction is relative to the initiator.
 988                          */
 989                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 990                                 tdata->data_phase = P_DATAOUT;
 991                         else
 992                                 tdata->data_phase = P_DATAIN;
 993
 994                         /*
 995                          * If the transfer is of an odd length and in the
 996                          * "in" direction (scsi->HostBus), then it may
 997                          * trigger a bug in the 'WideODD' feature of
 998                          * non-Ultra2 chips.  Force the total data-length
 999                          * to be even by adding an extra, 1 byte, SG,
1000                          * element.  We do this even if we are not currently
1001                          * negotiated wide as negotiation could occur before
1002                          * this command is executed.
1003                          */
1004                         if ((ahc->bugs & AHC_TMODE_WIDEODD_BUG) != 0
1005                          && (ccb->csio.dxfer_len & 0x1) != 0
1006                          && (ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
1007                                 nsegments++;
1008                                 if (nsegments > AHC_NSEG) {
1009                                         aic_set_transaction_status(scb,
1010                                             CAM_REQ_TOO_BIG);
1011                                         bus_dmamap_unload(ahc->buffer_dmat,
1012                                                           scb->dmamap);
1013                                         ahc_free_scb(ahc, scb);
1014                                         xpt_done(ccb);
1015                                         return;
1016                                 }
1017                                 sg->addr = aic_htole32(ahc->dma_bug_buf);
1018                                 sg->len = aic_htole32(1);
1019                                 sg++;
1020                         }
1021                 }
1022                 sg--;
1023                 sg->len |= aic_htole32(AHC_DMA_LAST_SEG);
1024
1025                 /* Copy the first SG into the "current" data pointer area */
1026                 scb->hscb->dataptr = scb->sg_list->addr;
1027                 scb->hscb->datacnt = scb->sg_list->len;
1028         } else {
1029                 scb->hscb->sgptr = aic_htole32(SG_LIST_NULL);
1030                 scb->hscb->dataptr = 0;
1031                 scb->hscb->datacnt = 0;
1032         }
1033
1034         scb->sg_count = nsegments;
1035
1036         /*
1037          * Last time we need to check if this SCB needs to
1038          * be aborted.
1039          */
1040         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
1041                 if (nsegments != 0)
1042                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
1043                 ahc_free_scb(ahc, scb);
1044                 xpt_done(ccb);
1045                 return;
1046         }
1047
1048         tinfo = ahc_fetch_transinfo(ahc, SCSIID_CHANNEL(ahc, scb->hscb->scsiid),
1049                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1050                                     SCSIID_TARGET(ahc, scb->hscb->scsiid),
1051                                     &tstate);
1052
1053         mask = SCB_GET_TARGET_MASK(ahc, scb);
1054         scb->hscb->scsirate = tinfo->scsirate;
1055         scb->hscb->scsioffset = tinfo->curr.offset;
1056         if ((tstate->ultraenb & mask) != 0)
1057                 scb->hscb->control |= ULTRAENB;
1058
1059         if ((tstate->discenable & mask) != 0
1060          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1061                 scb->hscb->control |= DISCENB;
1062
1063         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1064          && (tinfo->goal.width != 0
1065           || tinfo->goal.offset != 0
1066           || tinfo->goal.ppr_options != 0)) {
1067                 scb->flags |= SCB_NEGOTIATE;
1068                 scb->hscb->control |= MK_MESSAGE;
1069         } else if ((tstate->auto_negotiate & mask) != 0) {
1070                 scb->flags |= SCB_AUTO_NEGOTIATE;
1071                 scb->hscb->control |= MK_MESSAGE;
1072         }
1073
1074         LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
1075
1076         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1077
1078         /*
1079          * We only allow one untagged transaction
1080          * per target in the initiator role unless
1081          * we are storing a full busy target *lun*
1082          * table in SCB space.
1083          */
1084         if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
1085          && (ahc->flags & AHC_SCB_BTT) == 0) {
1086                 struct scb_tailq *untagged_q;
1087                 int target_offset;
1088
1089                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
1090                 untagged_q = &(ahc->untagged_queues[target_offset]);
1091                 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
1092                 scb->flags |= SCB_UNTAGGEDQ;
1093                 if (TAILQ_FIRST(untagged_q) != scb) {
1094                         return;
1095                 }
1096         }
1097         scb->flags |= SCB_ACTIVE;
1098
1099         /*
1100          * Timers are disabled while recovery is in progress.
1101          */
1102         aic_scb_timer_start(scb);
1103
1104         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1105                 /* Define a mapping from our tag to the SCB. */
1106                 ahc->scb_data->scbindex[scb->hscb->tag] = scb;
1107                 ahc_pause(ahc);
1108                 if ((ahc->flags & AHC_PAGESCBS) == 0)
1109                         ahc_outb(ahc, SCBPTR, scb->hscb->tag);
1110                 ahc_outb(ahc, TARG_IMMEDIATE_SCB, scb->hscb->tag);
1111                 ahc_unpause(ahc);
1112         } else {
1113                 ahc_queue_scb(ahc, scb);
1114         }
1115 }
1116
1117 static void
1118 ahc_poll(struct cam_sim *sim)
1119 {
1120         struct ahc_softc *ahc;
1121
1122         ahc = (struct ahc_softc *)cam_sim_softc(sim);
1123         ahc_intr(ahc);
1124 }
1125
1126 static void
1127 ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
1128                struct ccb_scsiio *csio, struct scb *scb)
1129 {
1130         struct hardware_scb *hscb;
1131         struct ccb_hdr *ccb_h;
1132         int error;
1133
1134         hscb = scb->hscb;
1135         ccb_h = &csio->ccb_h;
1136
1137         csio->resid = 0;
1138         csio->sense_resid = 0;
1139         if (ccb_h->func_code == XPT_SCSI_IO) {
1140                 hscb->cdb_len = csio->cdb_len;
1141                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1142                         if (hscb->cdb_len > sizeof(hscb->cdb32)
1143                          || (ccb_h->flags & CAM_CDB_PHYS) != 0) {
1144                                 aic_set_transaction_status(scb,
1145                                                            CAM_REQ_INVALID);
1146                                 ahc_free_scb(ahc, scb);
1147                                 xpt_done((union ccb *)csio);
1148                                 return;
1149                         }
1150                         if (hscb->cdb_len > 12) {
1151                                 memcpy(hscb->cdb32,
1152                                        csio->cdb_io.cdb_ptr,
1153                                        hscb->cdb_len);
1154                                 scb->flags |= SCB_CDB32_PTR;
1155                         } else {
1156                                 memcpy(hscb->shared_data.cdb,
1157                                        csio->cdb_io.cdb_ptr,
1158                                        hscb->cdb_len);
1159                         }
1160                 } else {
1161                         if (hscb->cdb_len > 12) {
1162                                 memcpy(hscb->cdb32, csio->cdb_io.cdb_bytes,
1163                                        hscb->cdb_len);
1164                                 scb->flags |= SCB_CDB32_PTR;
1165                         } else {
1166                                 memcpy(hscb->shared_data.cdb,
1167                                        csio->cdb_io.cdb_bytes,
1168                                        hscb->cdb_len);
1169                         }
1170                 }
1171         }
1172
1173         error = bus_dmamap_load_ccb(ahc->buffer_dmat,
1174                                     scb->dmamap,
1175                                     (union ccb *)csio,
1176                                     ahc_execute_scb,
1177                                     scb,
1178                                     0);
1179         if (error == EINPROGRESS) {
1180                 /*
1181                  * So as to maintain ordering,
1182                  * freeze the controller queue
1183                  * until our mapping is
1184                  * returned.
1185                  */
1186                 xpt_freeze_simq(sim, /*count*/1);
1187                 scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
1188         }
1189 }
1190
1191 static void
1192 ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb)
1193 {
1194         union ccb *abort_ccb;
1195
1196         abort_ccb = ccb->cab.abort_ccb;
1197         switch (abort_ccb->ccb_h.func_code) {
1198         case XPT_ACCEPT_TARGET_IO:
1199         case XPT_IMMEDIATE_NOTIFY:
1200         case XPT_CONT_TARGET_IO:
1201         {
1202                 struct ahc_tmode_tstate *tstate;
1203                 struct ahc_tmode_lstate *lstate;
1204                 struct ccb_hdr_slist *list;
1205                 cam_status status;
1206
1207                 status = ahc_find_tmode_devs(ahc, sim, abort_ccb, &tstate,
1208                                              &lstate, TRUE);
1209
1210                 if (status != CAM_REQ_CMP) {
1211                         ccb->ccb_h.status = status;
1212                         break;
1213                 }
1214
1215                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1216                         list = &lstate->accept_tios;
1217                 else if (abort_ccb->ccb_h.func_code == XPT_IMMEDIATE_NOTIFY)
1218                         list = &lstate->immed_notifies;
1219                 else
1220                         list = NULL;
1221
1222                 if (list != NULL) {
1223                         struct ccb_hdr *curelm;
1224                         int found;
1225
1226                         curelm = SLIST_FIRST(list);
1227                         found = 0;
1228                         if (curelm == &abort_ccb->ccb_h) {
1229                                 found = 1;
1230                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1231                         } else {
1232                                 while(curelm != NULL) {
1233                                         struct ccb_hdr *nextelm;
1234
1235                                         nextelm =
1236                                             SLIST_NEXT(curelm, sim_links.sle);
1237
1238                                         if (nextelm == &abort_ccb->ccb_h) {
1239                                                 found = 1;
1240                                                 SLIST_NEXT(curelm,
1241                                                            sim_links.sle) =
1242                                                     SLIST_NEXT(nextelm,
1243                                                                sim_links.sle);
1244                                                 break;
1245                                         }
1246                                         curelm = nextelm;
1247                                 }
1248                         }
1249
1250                         if (found) {
1251                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1252                                 xpt_done(abort_ccb);
1253                                 ccb->ccb_h.status = CAM_REQ_CMP;
1254                         } else {
1255                                 xpt_print_path(abort_ccb->ccb_h.path);
1256                                 printf("Not found\n");
1257                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1258                         }
1259                         break;
1260                 }
1261                 /* FALLTHROUGH */
1262         }
1263         case XPT_SCSI_IO:
1264                 /* XXX Fully implement the hard ones */
1265                 ccb->ccb_h.status = CAM_UA_ABORT;
1266                 break;
1267         default:
1268                 ccb->ccb_h.status = CAM_REQ_INVALID;
1269                 break;
1270         }
1271         xpt_done(ccb);
1272 }
1273
1274 void
1275 ahc_send_async(struct ahc_softc *ahc, char channel, u_int target,
1276                 u_int lun, ac_code code, void *opt_arg)
1277 {
1278         struct  ccb_trans_settings cts;
1279         struct cam_path *path;
1280         void *arg;
1281         int error;
1282
1283         arg = NULL;
1284         error = ahc_create_path(ahc, channel, target, lun, &path);
1285
1286         if (error != CAM_REQ_CMP)
1287                 return;
1288
1289         switch (code) {
1290         case AC_TRANSFER_NEG:
1291         {
1292                 struct  ccb_trans_settings_scsi *scsi;
1293
1294                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1295                 scsi = &cts.proto_specific.scsi;
1296                 cts.ccb_h.path = path;
1297                 cts.ccb_h.target_id = target;
1298                 cts.ccb_h.target_lun = lun;
1299                 ahc_get_tran_settings(ahc, channel == 'A' ? ahc->our_id
1300                                                           : ahc->our_id_b,
1301                                       channel, &cts);
1302                 arg = &cts;
1303                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1304                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1305                 if (opt_arg == NULL)
1306                         break;
1307                 if (*((ahc_queue_alg *)opt_arg) == AHC_QUEUE_TAGGED)
1308                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1309                 scsi->valid |= CTS_SCSI_VALID_TQ;
1310                 break;
1311         }
1312         case AC_SENT_BDR:
1313         case AC_BUS_RESET:
1314                 break;
1315         default:
1316                 panic("ahc_send_async: Unexpected async event");
1317         }
1318         xpt_async(code, path, arg);
1319         xpt_free_path(path);
1320 }
1321
1322 void
1323 ahc_platform_set_tags(struct ahc_softc *ahc,
1324                       struct ahc_devinfo *devinfo, int enable)
1325 {
1326 }
1327
1328 int
1329 ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
1330 {
1331         ahc->platform_data = malloc(sizeof(struct ahc_platform_data), M_DEVBUF,
1332             M_NOWAIT | M_ZERO);
1333         if (ahc->platform_data == NULL)
1334                 return (ENOMEM);
1335         return (0);
1336 }
1337
1338 void
1339 ahc_platform_free(struct ahc_softc *ahc)
1340 {
1341         struct ahc_platform_data *pdata;
1342
1343         pdata = ahc->platform_data;
1344         if (pdata != NULL) {
1345                 if (pdata->regs != NULL)
1346                         bus_release_resource(ahc->dev_softc,
1347                                              pdata->regs_res_type,
1348                                              pdata->regs_res_id,
1349                                              pdata->regs);
1350
1351                 if (pdata->irq != NULL)
1352                         bus_release_resource(ahc->dev_softc,
1353                                              pdata->irq_res_type,
1354                                              0, pdata->irq);
1355
1356                 if (pdata->sim_b != NULL) {
1357                         xpt_async(AC_LOST_DEVICE, pdata->path_b, NULL);
1358                         xpt_free_path(pdata->path_b);
1359                         xpt_bus_deregister(cam_sim_path(pdata->sim_b));
1360                         cam_sim_free(pdata->sim_b, /*free_devq*/TRUE);
1361                 }
1362                 if (pdata->sim != NULL) {
1363                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1364                         xpt_free_path(pdata->path);
1365                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1366                         cam_sim_free(pdata->sim, /*free_devq*/TRUE);
1367                 }
1368                 if (pdata->eh != NULL)
1369                         EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
1370                 free(ahc->platform_data, M_DEVBUF);
1371         }
1372 }
1373
1374 int
1375 ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc)
1376 {
1377         /* We don't sort softcs under FreeBSD so report equal always */
1378         return (0);
1379 }
1380
1381 int
1382 ahc_detach(device_t dev)
1383 {
1384         struct ahc_softc *ahc;
1385
1386         device_printf(dev, "detaching device\n");
1387         ahc = device_get_softc(dev);
1388         ahc_lock(ahc);
1389         TAILQ_REMOVE(&ahc_tailq, ahc, links);
1390         ahc_intr_enable(ahc, FALSE);
1391         bus_teardown_intr(dev, ahc->platform_data->irq, ahc->platform_data->ih);
1392         ahc_unlock(ahc);
1393         ahc_free(ahc);
1394         return (0);
1395 }
1396
1397 #if 0
1398 static void
1399 ahc_dump_targcmd(struct target_cmd *cmd)
1400 {
1401         uint8_t *byte;
1402         uint8_t *last_byte;
1403         int i;
1404
1405         byte = &cmd->initiator_channel;
1406         /* Debugging info for received commands */
1407         last_byte = &cmd[1].initiator_channel;
1408
1409         i = 0;
1410         while (byte < last_byte) {
1411                 if (i == 0)
1412                         printf("\t");
1413                 printf("%#x", *byte++);
1414                 i++;
1415                 if (i == 8) {
1416                         printf("\n");
1417                         i = 0;
1418                 } else {
1419                         printf(", ");
1420                 }
1421         }
1422 }
1423 #endif
1424
1425 static int
1426 ahc_modevent(module_t mod, int type, void *data)
1427 {
1428         /* XXX Deal with busy status on unload. */
1429         /* XXX Deal with unknown events */
1430         return 0;
1431 }
1432
1433 static moduledata_t ahc_mod = {
1434         "ahc",
1435         ahc_modevent,
1436         NULL
1437 };
1438
1439 DECLARE_MODULE(ahc, ahc_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1440 MODULE_DEPEND(ahc, cam, 1, 1, 1);
1441 MODULE_VERSION(ahc, 1);