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