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