sys/dev/disk/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#13 $
  32  *
  33  * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx_osm.c,v 1.27.2.6 2003/06/10 03:26:09 gibbs Exp $
  34  * $DragonFly: src/sys/dev/disk/aic7xxx/aic7xxx_osm.c,v 1.2 2003/06/17 04:28:22 dillon Exp $
  35  */
  36
  37 #include <dev/aic7xxx/aic7xxx_osm.h>
  38 #include <dev/aic7xxx/aic7xxx_inline.h>
  39
  40 #ifndef AHC_TMODE_ENABLE
  41 #define AHC_TMODE_ENABLE 0
  42 #endif
  43
  44 #define ccb_scb_ptr spriv_ptr0
  45
  46 devclass_t ahc_devclass;
  47
  48 #if UNUSED
  49 static void     ahc_dump_targcmd(struct target_cmd *cmd);
  50 #endif
  51 static int      ahc_modevent(module_t mod, int type, void *data);
  52 static void     ahc_action(struct cam_sim *sim, union ccb *ccb);
  53 static void     ahc_get_tran_settings(struct ahc_softc *ahc,
  54                                       int our_id, char channel,
  55                                       struct ccb_trans_settings *cts);
  56 static void     ahc_async(void *callback_arg, uint32_t code,
  57                           struct cam_path *path, void *arg);
  58 static void     ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs,
  59                                 int nsegments, int error);
  60 static void     ahc_poll(struct cam_sim *sim);
  61 static void     ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
  62                                struct ccb_scsiio *csio, struct scb *scb);
  63 static void     ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim,
  64                               union ccb *ccb);
  65 static int      ahc_create_path(struct ahc_softc *ahc,
  66                                 char channel, u_int target, u_int lun,
  67                                 struct cam_path **path);
  68
  69 static void     ahc_set_recoveryscb(struct ahc_softc *ahc, struct scb *scb);
  70
  71 static int
  72 ahc_create_path(struct ahc_softc *ahc, char channel, u_int target,
  73                 u_int lun, struct cam_path **path)
  74 {
  75         path_id_t path_id;
  76
  77         if (channel == 'B')
  78                 path_id = cam_sim_path(ahc->platform_data->sim_b);
  79         else
  80                 path_id = cam_sim_path(ahc->platform_data->sim);
  81
  82         return (xpt_create_path(path, /*periph*/NULL,
  83                                 path_id, target, lun));
  84 }
  85
  86 int
  87 ahc_map_int(struct ahc_softc *ahc)
  88 {
  89         int error;
  90
  91         /* Hook up our interrupt handler */
  92         error = bus_setup_intr(ahc->dev_softc, ahc->platform_data->irq,
  93                                INTR_TYPE_CAM, ahc_platform_intr, ahc,
  94                                &ahc->platform_data->ih);
  95
  96         if (error != 0)
  97                 device_printf(ahc->dev_softc, "bus_setup_intr() failed: %d\n",
  98                               error);
  99         return (error);
 100 }
 101
 102 /*
 103  * Attach all the sub-devices we can find
 104  */
 105 int
 106 ahc_attach(struct ahc_softc *ahc)
 107 {
 108         char   ahc_info[256];
 109         struct ccb_setasync csa;
 110         struct cam_devq *devq;
 111         int bus_id;
 112         int bus_id2;
 113         struct cam_sim *sim;
 114         struct cam_sim *sim2;
 115         struct cam_path *path;
 116         struct cam_path *path2;
 117         long s;
 118         int count;
 119
 120         count = 0;
 121         sim = NULL;
 122         sim2 = NULL;
 123
 124         ahc_controller_info(ahc, ahc_info);
 125         printf("%s\n", ahc_info);
 126         ahc_lock(ahc, &s);
 127         /*
 128          * Attach secondary channel first if the user has
 129          * declared it the primary channel.
 130          */
 131         if ((ahc->features & AHC_TWIN) != 0
 132          && (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
 133                 bus_id = 1;
 134                 bus_id2 = 0;
 135         } else {
 136                 bus_id = 0;
 137                 bus_id2 = 1;
 138         }
 139
 140         /*
 141          * Create the device queue for our SIM(s).
 142          */
 143         devq = cam_simq_alloc(AHC_MAX_QUEUE);
 144         if (devq == NULL)
 145                 goto fail;
 146
 147         /*
 148          * Construct our first channel SIM entry
 149          */
 150         sim = cam_sim_alloc(ahc_action, ahc_poll, "ahc", ahc,
 151                             device_get_unit(ahc->dev_softc),
 152                             1, AHC_MAX_QUEUE, devq);
 153         if (sim == NULL) {
 154                 cam_simq_free(devq);
 155                 goto fail;
 156         }
 157
 158         if (xpt_bus_register(sim, bus_id) != CAM_SUCCESS) {
 159                 cam_sim_free(sim, /*free_devq*/TRUE);
 160                 sim = NULL;
 161                 goto fail;
 162         }
 163
 164         if (xpt_create_path(&path, /*periph*/NULL,
 165                             cam_sim_path(sim), CAM_TARGET_WILDCARD,
 166                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 167                 xpt_bus_deregister(cam_sim_path(sim));
 168                 cam_sim_free(sim, /*free_devq*/TRUE);
 169                 sim = NULL;
 170                 goto fail;
 171         }
 172
 173         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 174         csa.ccb_h.func_code = XPT_SASYNC_CB;
 175         csa.event_enable = AC_LOST_DEVICE;
 176         csa.callback = ahc_async;
 177         csa.callback_arg = sim;
 178         xpt_action((union ccb *)&csa);
 179         count++;
 180
 181         if (ahc->features & AHC_TWIN) {
 182                 sim2 = cam_sim_alloc(ahc_action, ahc_poll, "ahc",
 183                                     ahc, device_get_unit(ahc->dev_softc), 1,
 184                                     AHC_MAX_QUEUE, devq);
 185
 186                 if (sim2 == NULL) {
 187                         printf("ahc_attach: Unable to attach second "
 188                                "bus due to resource shortage");
 189                         goto fail;
 190                 }
 191
 192                 if (xpt_bus_register(sim2, bus_id2) != CAM_SUCCESS) {
 193                         printf("ahc_attach: Unable to attach second "
 194                                "bus due to resource shortage");
 195                         /*
 196                          * We do not want to destroy the device queue
 197                          * because the first bus is using it.
 198                          */
 199                         cam_sim_free(sim2, /*free_devq*/FALSE);
 200                         goto fail;
 201                 }
 202
 203                 if (xpt_create_path(&path2, /*periph*/NULL,
 204                                     cam_sim_path(sim2),
 205                                     CAM_TARGET_WILDCARD,
 206                                     CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 207                         xpt_bus_deregister(cam_sim_path(sim2));
 208                         cam_sim_free(sim2, /*free_devq*/FALSE);
 209                         sim2 = NULL;
 210                         goto fail;
 211                 }
 212                 xpt_setup_ccb(&csa.ccb_h, path2, /*priority*/5);
 213                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 214                 csa.event_enable = AC_LOST_DEVICE;
 215                 csa.callback = ahc_async;
 216                 csa.callback_arg = sim2;
 217                 xpt_action((union ccb *)&csa);
 218                 count++;
 219         }
 220
 221 fail:
 222         if ((ahc->features & AHC_TWIN) != 0
 223          && (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
 224                 ahc->platform_data->sim_b = sim;
 225                 ahc->platform_data->path_b = path;
 226                 ahc->platform_data->sim = sim2;
 227                 ahc->platform_data->path = path2;
 228         } else {
 229                 ahc->platform_data->sim = sim;
 230                 ahc->platform_data->path = path;
 231                 ahc->platform_data->sim_b = sim2;
 232                 ahc->platform_data->path_b = path2;
 233         }
 234
 235         if (count != 0) {
 236                 /* We have to wait until after any system dumps... */
 237                 ahc->platform_data->eh =
 238                     EVENTHANDLER_REGISTER(shutdown_final, ahc_shutdown,
 239                                           ahc, SHUTDOWN_PRI_DEFAULT);
 240                 ahc_intr_enable(ahc, TRUE);
 241         }
 242
 243         ahc_unlock(ahc, &s);
 244         return (count);
 245 }
 246
 247 /*
 248  * Catch an interrupt from the adapter
 249  */
 250 void
 251 ahc_platform_intr(void *arg)
 252 {
 253         struct  ahc_softc *ahc;
 254
 255         ahc = (struct ahc_softc *)arg;
 256         ahc_intr(ahc);
 257 }
 258
 259 /*
 260  * We have an scb which has been processed by the
 261  * adaptor, now we look to see how the operation
 262  * went.
 263  */
 264 void
 265 ahc_done(struct ahc_softc *ahc, struct scb *scb)
 266 {
 267         union ccb *ccb;
 268
 269         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
 270                   ("ahc_done - scb %d\n", scb->hscb->tag));
 271
 272         ccb = scb->io_ctx;
 273         LIST_REMOVE(scb, pending_links);
 274         if ((scb->flags & SCB_UNTAGGEDQ) != 0) {
 275                 struct scb_tailq *untagged_q;
 276                 int target_offset;
 277
 278                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
 279                 untagged_q = &ahc->untagged_queues[target_offset];
 280                 TAILQ_REMOVE(untagged_q, scb, links.tqe);
 281                 scb->flags &= ~SCB_UNTAGGEDQ;
 282                 ahc_run_untagged_queue(ahc, untagged_q);
 283         }
 284
 285         untimeout(ahc_timeout, (caddr_t)scb, ccb->ccb_h.timeout_ch);
 286
 287         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 288                 bus_dmasync_op_t op;
 289
 290                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 291                         op = BUS_DMASYNC_POSTREAD;
 292                 else
 293                         op = BUS_DMASYNC_POSTWRITE;
 294                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
 295                 bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
 296         }
 297
 298         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 299                 struct cam_path *ccb_path;
 300
 301                 /*
 302                  * If we have finally disconnected, clean up our
 303                  * pending device state.
 304                  * XXX - There may be error states that cause where
 305                  *       we will remain connected.
 306                  */
 307                 ccb_path = ccb->ccb_h.path;
 308                 if (ahc->pending_device != NULL
 309                  && xpt_path_comp(ahc->pending_device->path, ccb_path) == 0) {
 310
 311                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 312                                 ahc->pending_device = NULL;
 313                         } else {
 314                                 if (bootverbose) {
 315                                         xpt_print_path(ccb->ccb_h.path);
 316                                         printf("Still connected\n");
 317                                 }
 318                                 ahc_freeze_ccb(ccb);
 319                         }
 320                 }
 321
 322                 if (ahc_get_transaction_status(scb) == CAM_REQ_INPROG)
 323                         ccb->ccb_h.status |= CAM_REQ_CMP;
 324                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 325                 ahc_free_scb(ahc, scb);
 326                 xpt_done(ccb);
 327                 return;
 328         }
 329
 330         /*
 331          * If the recovery SCB completes, we have to be
 332          * out of our timeout.
 333          */
 334         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
 335                 struct  scb *list_scb;
 336
 337                 /*
 338                  * We were able to complete the command successfully,
 339                  * so reinstate the timeouts for all other pending
 340                  * commands.
 341                  */
 342                 LIST_FOREACH(list_scb, &ahc->pending_scbs, pending_links) {
 343                         union ccb *ccb;
 344                         uint64_t time;
 345
 346                         ccb = list_scb->io_ctx;
 347                         if (ccb->ccb_h.timeout == CAM_TIME_INFINITY)
 348                                 continue;
 349
 350                         time = ccb->ccb_h.timeout;
 351                         time *= hz;
 352                         time /= 1000;
 353                         ccb->ccb_h.timeout_ch =
 354                             timeout(ahc_timeout, list_scb, time);
 355                 }
 356
 357                 if (ahc_get_transaction_status(scb) == CAM_BDR_SENT
 358                  || ahc_get_transaction_status(scb) == CAM_REQ_ABORTED)
 359                         ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT);
 360                 ahc_print_path(ahc, scb);
 361                 printf("no longer in timeout, status = %x\n",
 362                        ccb->ccb_h.status);
 363         }
 364
 365         /* Don't clobber any existing error state */
 366         if (ahc_get_transaction_status(scb) == CAM_REQ_INPROG) {
 367                 ccb->ccb_h.status |= CAM_REQ_CMP;
 368         } else if ((scb->flags & SCB_SENSE) != 0) {
 369                 /*
 370                  * We performed autosense retrieval.
 371                  *
 372                  * Zero any sense not transferred by the
 373                  * device.  The SCSI spec mandates that any
 374                  * untransfered data should be assumed to be
 375                  * zero.  Complete the 'bounce' of sense information
 376                  * through buffers accessible via bus-space by
 377                  * copying it into the clients csio.
 378                  */
 379                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 380                 memcpy(&ccb->csio.sense_data,
 381                        ahc_get_sense_buf(ahc, scb),
 382                        (ahc_le32toh(scb->sg_list->len) & AHC_SG_LEN_MASK)
 383                        - ccb->csio.sense_resid);
 384                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 385         }
 386         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 387         ahc_free_scb(ahc, scb);
 388         xpt_done(ccb);
 389 }
 390
 391 static void
 392 ahc_action(struct cam_sim *sim, union ccb *ccb)
 393 {
 394         struct  ahc_softc *ahc;
 395         struct  ahc_tmode_lstate *lstate;
 396         u_int   target_id;
 397         u_int   our_id;
 398         long    s;
 399
 400         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahc_action\n"));
 401
 402         ahc = (struct ahc_softc *)cam_sim_softc(sim);
 403
 404         target_id = ccb->ccb_h.target_id;
 405         our_id = SIM_SCSI_ID(ahc, sim);
 406
 407         switch (ccb->ccb_h.func_code) {
 408         /* Common cases first */
 409         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 410         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 411         {
 412                 struct     ahc_tmode_tstate *tstate;
 413                 cam_status status;
 414
 415                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
 416                                              &lstate, TRUE);
 417
 418                 if (status != CAM_REQ_CMP) {
 419                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 420                                 /* Response from the black hole device */
 421                                 tstate = NULL;
 422                                 lstate = ahc->black_hole;
 423                         } else {
 424                                 ccb->ccb_h.status = status;
 425                                 xpt_done(ccb);
 426                                 break;
 427                         }
 428                 }
 429                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 430
 431                         ahc_lock(ahc, &s);
 432                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 433                                           sim_links.sle);
 434                         ccb->ccb_h.status = CAM_REQ_INPROG;
 435                         if ((ahc->flags & AHC_TQINFIFO_BLOCKED) != 0)
 436                                 ahc_run_tqinfifo(ahc, /*paused*/FALSE);
 437                         ahc_unlock(ahc, &s);
 438                         break;
 439                 }
 440
 441                 /*
 442                  * The target_id represents the target we attempt to
 443                  * select.  In target mode, this is the initiator of
 444                  * the original command.
 445                  */
 446                 our_id = target_id;
 447                 target_id = ccb->csio.init_id;
 448                 /* FALLTHROUGH */
 449         }
 450         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 451         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 452         {
 453                 struct  scb *scb;
 454                 struct  hardware_scb *hscb;
 455
 456                 if ((ahc->flags & AHC_INITIATORROLE) == 0
 457                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 458                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 459                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 460                         xpt_done(ccb);
 461                         return;
 462                 }
 463
 464                 /*
 465                  * get an scb to use.
 466                  */
 467                 ahc_lock(ahc, &s);
 468                 if ((scb = ahc_get_scb(ahc)) == NULL) {
 469
 470                         xpt_freeze_simq(sim, /*count*/1);
 471                         ahc->flags |= AHC_RESOURCE_SHORTAGE;
 472                         ahc_unlock(ahc, &s);
 473                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 474                         xpt_done(ccb);
 475                         return;
 476                 }
 477                 ahc_unlock(ahc, &s);
 478
 479                 hscb = scb->hscb;
 480
 481                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 482                           ("start scb(%p)\n", scb));
 483                 scb->io_ctx = ccb;
 484                 /*
 485                  * So we can find the SCB when an abort is requested
 486                  */
 487                 ccb->ccb_h.ccb_scb_ptr = scb;
 488
 489                 /*
 490                  * Put all the arguments for the xfer in the scb
 491                  */
 492                 hscb->control = 0;
 493                 hscb->scsiid = BUILD_SCSIID(ahc, sim, target_id, our_id);
 494                 hscb->lun = ccb->ccb_h.target_lun;
 495                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 496                         hscb->cdb_len = 0;
 497                         scb->flags |= SCB_DEVICE_RESET;
 498                         hscb->control |= MK_MESSAGE;
 499                         ahc_execute_scb(scb, NULL, 0, 0);
 500                 } else {
 501                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 502                                 struct target_data *tdata;
 503
 504                                 tdata = &hscb->shared_data.tdata;
 505                                 if (ahc->pending_device == lstate)
 506                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 507                                 hscb->control |= TARGET_SCB;
 508                                 scb->flags |= SCB_TARGET_SCB;
 509                                 tdata->target_phases = 0;
 510                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 511                                         tdata->target_phases |= SPHASE_PENDING;
 512                                         tdata->scsi_status =
 513                                             ccb->csio.scsi_status;
 514                                 }
 515                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 516                                         tdata->target_phases |= NO_DISCONNECT;
 517
 518                                 tdata->initiator_tag = ccb->csio.tag_id;
 519                         }
 520                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 521                                 hscb->control |= ccb->csio.tag_action;
 522
 523                         ahc_setup_data(ahc, sim, &ccb->csio, scb);
 524                 }
 525                 break;
 526         }
 527         case XPT_NOTIFY_ACK:
 528         case XPT_IMMED_NOTIFY:
 529         {
 530                 struct     ahc_tmode_tstate *tstate;
 531                 struct     ahc_tmode_lstate *lstate;
 532                 cam_status status;
 533
 534                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
 535                                              &lstate, TRUE);
 536
 537                 if (status != CAM_REQ_CMP) {
 538                         ccb->ccb_h.status = status;
 539                         xpt_done(ccb);
 540                         break;
 541                 }
 542                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 543                                   sim_links.sle);
 544                 ccb->ccb_h.status = CAM_REQ_INPROG;
 545                 ahc_send_lstate_events(ahc, lstate);
 546                 break;
 547         }
 548         case XPT_EN_LUN:                /* Enable LUN as a target */
 549                 ahc_handle_en_lun(ahc, sim, ccb);
 550                 xpt_done(ccb);
 551                 break;
 552         case XPT_ABORT:                 /* Abort the specified CCB */
 553         {
 554                 ahc_abort_ccb(ahc, sim, ccb);
 555                 break;
 556         }
 557         case XPT_SET_TRAN_SETTINGS:
 558         {
 559 #ifdef AHC_NEW_TRAN_SETTINGS
 560                 struct  ahc_devinfo devinfo;
 561                 struct  ccb_trans_settings *cts;
 562                 struct  ccb_trans_settings_scsi *scsi;
 563                 struct  ccb_trans_settings_spi *spi;
 564                 struct  ahc_initiator_tinfo *tinfo;
 565                 struct  ahc_tmode_tstate *tstate;
 566                 uint16_t *discenable;
 567                 uint16_t *tagenable;
 568                 u_int   update_type;
 569
 570                 cts = &ccb->cts;
 571                 scsi = &cts->proto_specific.scsi;
 572                 spi = &cts->xport_specific.spi;
 573                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
 574                                     cts->ccb_h.target_id,
 575                                     cts->ccb_h.target_lun,
 576                                     SIM_CHANNEL(ahc, sim),
 577                                     ROLE_UNKNOWN);
 578                 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
 579                                             devinfo.our_scsiid,
 580                                             devinfo.target, &tstate);
 581                 update_type = 0;
 582                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 583                         update_type |= AHC_TRANS_GOAL;
 584                         discenable = &tstate->discenable;
 585                         tagenable = &tstate->tagenable;
 586                         tinfo->curr.protocol_version =
 587                             cts->protocol_version;
 588                         tinfo->curr.transport_version =
 589                             cts->transport_version;
 590                         tinfo->goal.protocol_version =
 591                             cts->protocol_version;
 592                         tinfo->goal.transport_version =
 593                             cts->transport_version;
 594                 } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 595                         update_type |= AHC_TRANS_USER;
 596                         discenable = &ahc->user_discenable;
 597                         tagenable = &ahc->user_tagenable;
 598                         tinfo->user.protocol_version =
 599                             cts->protocol_version;
 600                         tinfo->user.transport_version =
 601                             cts->transport_version;
 602                 } else {
 603                         ccb->ccb_h.status = CAM_REQ_INVALID;
 604                         xpt_done(ccb);
 605                         break;
 606                 }
 607
 608                 ahc_lock(ahc, &s);
 609
 610                 if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 611                         if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 612                                 *discenable |= devinfo.target_mask;
 613                         else
 614                                 *discenable &= ~devinfo.target_mask;
 615                 }
 616
 617                 if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 618                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 619                                 *tagenable |= devinfo.target_mask;
 620                         else
 621                                 *tagenable &= ~devinfo.target_mask;
 622                 }
 623
 624                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 625                         ahc_validate_width(ahc, /*tinfo limit*/NULL,
 626                                            &spi->bus_width, ROLE_UNKNOWN);
 627                         ahc_set_width(ahc, &devinfo, spi->bus_width,
 628                                       update_type, /*paused*/FALSE);
 629                 }
 630
 631                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 632                         if (update_type == AHC_TRANS_USER)
 633                                 spi->ppr_options = tinfo->user.ppr_options;
 634                         else
 635                                 spi->ppr_options = tinfo->goal.ppr_options;
 636                 }
 637
 638                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 639                         if (update_type == AHC_TRANS_USER)
 640                                 spi->sync_offset = tinfo->user.offset;
 641                         else
 642                                 spi->sync_offset = tinfo->goal.offset;
 643                 }
 644
 645                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 646                         if (update_type == AHC_TRANS_USER)
 647                                 spi->sync_period = tinfo->user.period;
 648                         else
 649                                 spi->sync_period = tinfo->goal.period;
 650                 }
 651
 652                 if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 653                  || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 654                         struct ahc_syncrate *syncrate;
 655                         u_int maxsync;
 656
 657                         if ((ahc->features & AHC_ULTRA2) != 0)
 658                                 maxsync = AHC_SYNCRATE_DT;
 659                         else if ((ahc->features & AHC_ULTRA) != 0)
 660                                 maxsync = AHC_SYNCRATE_ULTRA;
 661                         else
 662                                 maxsync = AHC_SYNCRATE_FAST;
 663
 664                         if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 665                                 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 666
 667                         syncrate = ahc_find_syncrate(ahc, &spi->sync_period,
 668                                                      &spi->ppr_options,
 669                                                      maxsync);
 670                         ahc_validate_offset(ahc, /*tinfo limit*/NULL,
 671                                             syncrate, &spi->sync_offset,
 672                                             spi->bus_width, ROLE_UNKNOWN);
 673
 674                         /* We use a period of 0 to represent async */
 675                         if (spi->sync_offset == 0) {
 676                                 spi->sync_period = 0;
 677                                 spi->ppr_options = 0;
 678                         }
 679
 680                         ahc_set_syncrate(ahc, &devinfo, syncrate,
 681                                          spi->sync_period, spi->sync_offset,
 682                                          spi->ppr_options, update_type,
 683                                          /*paused*/FALSE);
 684                 }
 685                 ahc_unlock(ahc, &s);
 686                 ccb->ccb_h.status = CAM_REQ_CMP;
 687                 xpt_done(ccb);
 688 #else
 689                 struct    ahc_devinfo devinfo;
 690                 struct    ccb_trans_settings *cts;
 691                 struct    ahc_initiator_tinfo *tinfo;
 692                 struct    ahc_tmode_tstate *tstate;
 693                 uint16_t *discenable;
 694                 uint16_t *tagenable;
 695                 u_int     update_type;
 696                 long      s;
 697
 698                 cts = &ccb->cts;
 699                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
 700                                     cts->ccb_h.target_id,
 701                                     cts->ccb_h.target_lun,
 702                                     SIM_CHANNEL(ahc, sim),
 703                                     ROLE_UNKNOWN);
 704                 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
 705                                             devinfo.our_scsiid,
 706                                             devinfo.target, &tstate);
 707                 update_type = 0;
 708                 if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) {
 709                         update_type |= AHC_TRANS_GOAL;
 710                         discenable = &tstate->discenable;
 711                         tagenable = &tstate->tagenable;
 712                 } else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
 713                         update_type |= AHC_TRANS_USER;
 714                         discenable = &ahc->user_discenable;
 715                         tagenable = &ahc->user_tagenable;
 716                 } else {
 717                         ccb->ccb_h.status = CAM_REQ_INVALID;
 718                         xpt_done(ccb);
 719                         break;
 720                 }
 721
 722                 ahc_lock(ahc, &s);
 723
 724                 if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
 725                         if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
 726                                 *discenable |= devinfo.target_mask;
 727                         else
 728                                 *discenable &= ~devinfo.target_mask;
 729                 }
 730
 731                 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
 732                         if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
 733                                 *tagenable |= devinfo.target_mask;
 734                         else
 735                                 *tagenable &= ~devinfo.target_mask;
 736                 }
 737
 738                 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
 739                         ahc_validate_width(ahc, /*tinfo limit*/NULL,
 740                                            &cts->bus_width, ROLE_UNKNOWN);
 741                         ahc_set_width(ahc, &devinfo, cts->bus_width,
 742                                       update_type, /*paused*/FALSE);
 743                 }
 744
 745                 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) {
 746                         if (update_type == AHC_TRANS_USER)
 747                                 cts->sync_offset = tinfo->user.offset;
 748                         else
 749                                 cts->sync_offset = tinfo->goal.offset;
 750                 }
 751
 752                 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) {
 753                         if (update_type == AHC_TRANS_USER)
 754                                 cts->sync_period = tinfo->user.period;
 755                         else
 756                                 cts->sync_period = tinfo->goal.period;
 757                 }
 758
 759                 if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
 760                  || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)) {
 761                         struct ahc_syncrate *syncrate;
 762                         u_int ppr_options;
 763                         u_int maxsync;
 764
 765                         if ((ahc->features & AHC_ULTRA2) != 0)
 766                                 maxsync = AHC_SYNCRATE_DT;
 767                         else if ((ahc->features & AHC_ULTRA) != 0)
 768                                 maxsync = AHC_SYNCRATE_ULTRA;
 769                         else
 770                                 maxsync = AHC_SYNCRATE_FAST;
 771
 772                         ppr_options = 0;
 773                         if (cts->sync_period <= 9
 774                          && cts->bus_width == MSG_EXT_WDTR_BUS_16_BIT)
 775                                 ppr_options = MSG_EXT_PPR_DT_REQ;
 776
 777                         syncrate = ahc_find_syncrate(ahc, &cts->sync_period,
 778                                                      &ppr_options,
 779                                                      maxsync);
 780                         ahc_validate_offset(ahc, /*tinfo limit*/NULL,
 781                                             syncrate, &cts->sync_offset,
 782                                             MSG_EXT_WDTR_BUS_8_BIT,
 783                                             ROLE_UNKNOWN);
 784
 785                         /* We use a period of 0 to represent async */
 786                         if (cts->sync_offset == 0) {
 787                                 cts->sync_period = 0;
 788                                 ppr_options = 0;
 789                         }
 790
 791                         if (ppr_options == MSG_EXT_PPR_DT_REQ
 792                          && tinfo->user.transport_version >= 3) {
 793                                 tinfo->goal.transport_version =
 794                                     tinfo->user.transport_version;
 795                                 tinfo->curr.transport_version =
 796                                     tinfo->user.transport_version;
 797                         }
 798
 799                         ahc_set_syncrate(ahc, &devinfo, syncrate,
 800                                          cts->sync_period, cts->sync_offset,
 801                                          ppr_options, update_type,
 802                                          /*paused*/FALSE);
 803                 }
 804                 ahc_unlock(ahc, &s);
 805                 ccb->ccb_h.status = CAM_REQ_CMP;
 806                 xpt_done(ccb);
 807 #endif
 808                 break;
 809         }
 810         case XPT_GET_TRAN_SETTINGS:
 811         /* Get default/user set transfer settings for the target */
 812         {
 813
 814                 ahc_lock(ahc, &s);
 815                 ahc_get_tran_settings(ahc, SIM_SCSI_ID(ahc, sim),
 816                                       SIM_CHANNEL(ahc, sim), &ccb->cts);
 817                 ahc_unlock(ahc, &s);
 818                 xpt_done(ccb);
 819                 break;
 820         }
 821         case XPT_CALC_GEOMETRY:
 822         {
 823                 struct    ccb_calc_geometry *ccg;
 824                 uint32_t size_mb;
 825                 uint32_t secs_per_cylinder;
 826                 int       extended;
 827
 828                 ccg = &ccb->ccg;
 829                 size_mb = ccg->volume_size
 830                         / ((1024L * 1024L) / ccg->block_size);
 831                 extended = SIM_IS_SCSIBUS_B(ahc, sim)
 832                         ? ahc->flags & AHC_EXTENDED_TRANS_B
 833                         : ahc->flags & AHC_EXTENDED_TRANS_A;
 834
 835                 if (size_mb > 1024 && extended) {
 836                         ccg->heads = 255;
 837                         ccg->secs_per_track = 63;
 838                 } else {
 839                         ccg->heads = 64;
 840                         ccg->secs_per_track = 32;
 841                 }
 842                 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
 843                 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
 844                 ccb->ccb_h.status = CAM_REQ_CMP;
 845                 xpt_done(ccb);
 846                 break;
 847         }
 848         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 849         {
 850                 int  found;
 851
 852                 ahc_lock(ahc, &s);
 853                 found = ahc_reset_channel(ahc, SIM_CHANNEL(ahc, sim),
 854                                           /*initiate reset*/TRUE);
 855                 ahc_unlock(ahc, &s);
 856                 if (bootverbose) {
 857                         xpt_print_path(SIM_PATH(ahc, sim));
 858                         printf("SCSI bus reset delivered. "
 859                                "%d SCBs aborted.\n", found);
 860                 }
 861                 ccb->ccb_h.status = CAM_REQ_CMP;
 862                 xpt_done(ccb);
 863                 break;
 864         }
 865         case XPT_TERM_IO:               /* Terminate the I/O process */
 866                 /* XXX Implement */
 867                 ccb->ccb_h.status = CAM_REQ_INVALID;
 868                 xpt_done(ccb);
 869                 break;
 870         case XPT_PATH_INQ:              /* Path routing inquiry */
 871         {
 872                 struct ccb_pathinq *cpi = &ccb->cpi;
 873
 874                 cpi->version_num = 1; /* XXX??? */
 875                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 876                 if ((ahc->features & AHC_WIDE) != 0)
 877                         cpi->hba_inquiry |= PI_WIDE_16;
 878                 if ((ahc->features & AHC_TARGETMODE) != 0) {
 879                         cpi->target_sprt = PIT_PROCESSOR
 880                                          | PIT_DISCONNECT
 881                                          | PIT_TERM_IO;
 882                 } else {
 883                         cpi->target_sprt = 0;
 884                 }
 885                 cpi->hba_misc = 0;
 886                 cpi->hba_eng_cnt = 0;
 887                 cpi->max_target = (ahc->features & AHC_WIDE) ? 15 : 7;
 888                 cpi->max_lun = AHC_NUM_LUNS - 1;
 889                 if (SIM_IS_SCSIBUS_B(ahc, sim)) {
 890                         cpi->initiator_id = ahc->our_id_b;
 891                         if ((ahc->flags & AHC_RESET_BUS_B) == 0)
 892                                 cpi->hba_misc |= PIM_NOBUSRESET;
 893                 } else {
 894                         cpi->initiator_id = ahc->our_id;
 895                         if ((ahc->flags & AHC_RESET_BUS_A) == 0)
 896                                 cpi->hba_misc |= PIM_NOBUSRESET;
 897                 }
 898                 cpi->bus_id = cam_sim_bus(sim);
 899                 cpi->base_transfer_speed = 3300;
 900                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 901                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 902                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 903                 cpi->unit_number = cam_sim_unit(sim);
 904 #ifdef AHC_NEW_TRAN_SETTINGS
 905                 cpi->protocol = PROTO_SCSI;
 906                 cpi->protocol_version = SCSI_REV_2;
 907                 cpi->transport = XPORT_SPI;
 908                 cpi->transport_version = 2;
 909                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
 910                 if ((ahc->features & AHC_DT) != 0) {
 911                         cpi->transport_version = 3;
 912                         cpi->xport_specific.spi.ppr_options =
 913                             SID_SPI_CLOCK_DT_ST;
 914                 }
 915 #endif
 916                 cpi->ccb_h.status = CAM_REQ_CMP;
 917                 xpt_done(ccb);
 918                 break;
 919         }
 920         default:
 921                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 922                 xpt_done(ccb);
 923                 break;
 924         }
 925 }
 926
 927 static void
 928 ahc_get_tran_settings(struct ahc_softc *ahc, int our_id, char channel,
 929                       struct ccb_trans_settings *cts)
 930 {
 931 #ifdef AHC_NEW_TRAN_SETTINGS
 932         struct  ahc_devinfo devinfo;
 933         struct  ccb_trans_settings_scsi *scsi;
 934         struct  ccb_trans_settings_spi *spi;
 935         struct  ahc_initiator_tinfo *targ_info;
 936         struct  ahc_tmode_tstate *tstate;
 937         struct  ahc_transinfo *tinfo;
 938
 939         scsi = &cts->proto_specific.scsi;
 940         spi = &cts->xport_specific.spi;
 941         ahc_compile_devinfo(&devinfo, our_id,
 942                             cts->ccb_h.target_id,
 943                             cts->ccb_h.target_lun,
 944                             channel, ROLE_UNKNOWN);
 945         targ_info = ahc_fetch_transinfo(ahc, devinfo.channel,
 946                                         devinfo.our_scsiid,
 947                                         devinfo.target, &tstate);
 948
 949         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 950                 tinfo = &targ_info->curr;
 951         else
 952                 tinfo = &targ_info->user;
 953
 954         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 955         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 956         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 957                 if ((ahc->user_discenable & devinfo.target_mask) != 0)
 958                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 959
 960                 if ((ahc->user_tagenable & devinfo.target_mask) != 0)
 961                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 962         } else {
 963                 if ((tstate->discenable & devinfo.target_mask) != 0)
 964                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 965
 966                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 967                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 968         }
 969         cts->protocol_version = tinfo->protocol_version;
 970         cts->transport_version = tinfo->transport_version;
 971
 972         spi->sync_period = tinfo->period;
 973         spi->sync_offset = tinfo->offset;
 974         spi->bus_width = tinfo->width;
 975         spi->ppr_options = tinfo->ppr_options;
 976
 977         cts->protocol = PROTO_SCSI;
 978         cts->transport = XPORT_SPI;
 979         spi->valid = CTS_SPI_VALID_SYNC_RATE
 980                    | CTS_SPI_VALID_SYNC_OFFSET
 981                    | CTS_SPI_VALID_BUS_WIDTH
 982                    | CTS_SPI_VALID_PPR_OPTIONS;
 983
 984         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 985                 scsi->valid = CTS_SCSI_VALID_TQ;
 986                 spi->valid |= CTS_SPI_VALID_DISC;
 987         } else {
 988                 scsi->valid = 0;
 989         }
 990
 991         cts->ccb_h.status = CAM_REQ_CMP;
 992 #else
 993         struct  ahc_devinfo devinfo;
 994         struct  ahc_initiator_tinfo *targ_info;
 995         struct  ahc_tmode_tstate *tstate;
 996         struct  ahc_transinfo *tinfo;
 997
 998         ahc_compile_devinfo(&devinfo, our_id,
 999                             cts->ccb_h.target_id,
1000                             cts->ccb_h.target_lun,
1001                             channel, ROLE_UNKNOWN);
1002         targ_info = ahc_fetch_transinfo(ahc, devinfo.channel,
1003                                         devinfo.our_scsiid,
1004                                         devinfo.target, &tstate);
1005
1006         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
1007                 tinfo = &targ_info->curr;
1008         else
1009                 tinfo = &targ_info->user;
1010
1011         cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
1012         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) == 0) {
1013                 if ((ahc->user_discenable & devinfo.target_mask) != 0)
1014                         cts->flags |= CCB_TRANS_DISC_ENB;
1015
1016                 if ((ahc->user_tagenable & devinfo.target_mask) != 0)
1017                         cts->flags |= CCB_TRANS_TAG_ENB;
1018         } else {
1019                 if ((tstate->discenable & devinfo.target_mask) != 0)
1020                         cts->flags |= CCB_TRANS_DISC_ENB;
1021
1022                 if ((tstate->tagenable & devinfo.target_mask) != 0)
1023                         cts->flags |= CCB_TRANS_TAG_ENB;
1024         }
1025         cts->sync_period = tinfo->period;
1026         cts->sync_offset = tinfo->offset;
1027         cts->bus_width = tinfo->width;
1028
1029         cts->valid = CCB_TRANS_SYNC_RATE_VALID
1030                    | CCB_TRANS_SYNC_OFFSET_VALID
1031                    | CCB_TRANS_BUS_WIDTH_VALID;
1032
1033         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD)
1034                 cts->valid |= CCB_TRANS_DISC_VALID|CCB_TRANS_TQ_VALID;
1035
1036         cts->ccb_h.status = CAM_REQ_CMP;
1037 #endif
1038 }
1039
1040 static void
1041 ahc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
1042 {
1043         struct ahc_softc *ahc;
1044         struct cam_sim *sim;
1045
1046         sim = (struct cam_sim *)callback_arg;
1047         ahc = (struct ahc_softc *)cam_sim_softc(sim);
1048         switch (code) {
1049         case AC_LOST_DEVICE:
1050         {
1051                 struct  ahc_devinfo devinfo;
1052                 long    s;
1053
1054                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
1055                                     xpt_path_target_id(path),
1056                                     xpt_path_lun_id(path),
1057                                     SIM_CHANNEL(ahc, sim),
1058                                     ROLE_UNKNOWN);
1059
1060                 /*
1061                  * Revert to async/narrow transfers
1062                  * for the next device.
1063                  */
1064                 ahc_lock(ahc, &s);
1065                 ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
1066                               AHC_TRANS_GOAL|AHC_TRANS_CUR, /*paused*/FALSE);
1067                 ahc_set_syncrate(ahc, &devinfo, /*syncrate*/NULL,
1068                                  /*period*/0, /*offset*/0, /*ppr_options*/0,
1069                                  AHC_TRANS_GOAL|AHC_TRANS_CUR,
1070                                  /*paused*/FALSE);
1071                 ahc_unlock(ahc, &s);
1072                 break;
1073         }
1074         default:
1075                 break;
1076         }
1077 }
1078
1079 static void
1080 ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
1081                 int error)
1082 {
1083         struct  scb *scb;
1084         union   ccb *ccb;
1085         struct  ahc_softc *ahc;
1086         struct  ahc_initiator_tinfo *tinfo;
1087         struct  ahc_tmode_tstate *tstate;
1088         u_int   mask;
1089         long    s;
1090
1091         scb = (struct scb *)arg;
1092         ccb = scb->io_ctx;
1093         ahc = scb->ahc_softc;
1094
1095         if (error != 0) {
1096                 if (error == EFBIG)
1097                         ahc_set_transaction_status(scb, CAM_REQ_TOO_BIG);
1098                 else
1099                         ahc_set_transaction_status(scb, CAM_REQ_CMP_ERR);
1100                 if (nsegments != 0)
1101                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
1102                 ahc_lock(ahc, &s);
1103                 ahc_free_scb(ahc, scb);
1104                 ahc_unlock(ahc, &s);
1105                 xpt_done(ccb);
1106                 return;
1107         }
1108         if (nsegments != 0) {
1109                 struct    ahc_dma_seg *sg;
1110                 bus_dma_segment_t *end_seg;
1111                 bus_dmasync_op_t op;
1112
1113                 end_seg = dm_segs + nsegments;
1114
1115                 /* Copy the segments into our SG list */
1116                 sg = scb->sg_list;
1117                 while (dm_segs < end_seg) {
1118                         uint32_t len;
1119
1120                         sg->addr = ahc_htole32(dm_segs->ds_addr);
1121                         len = dm_segs->ds_len
1122                             | ((dm_segs->ds_addr >> 8) & 0x7F000000);
1123                         sg->len = ahc_htole32(len);
1124                         sg++;
1125                         dm_segs++;
1126                 }
1127
1128                 /*
1129                  * Note where to find the SG entries in bus space.
1130                  * We also set the full residual flag which the
1131                  * sequencer will clear as soon as a data transfer
1132                  * occurs.
1133                  */
1134                 scb->hscb->sgptr = ahc_htole32(scb->sg_list_phys|SG_FULL_RESID);
1135
1136                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1137                         op = BUS_DMASYNC_PREREAD;
1138                 else
1139                         op = BUS_DMASYNC_PREWRITE;
1140
1141                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
1142
1143                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
1144                         struct target_data *tdata;
1145
1146                         tdata = &scb->hscb->shared_data.tdata;
1147                         tdata->target_phases |= DPHASE_PENDING;
1148                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
1149                                 tdata->data_phase = P_DATAOUT;
1150                         else
1151                                 tdata->data_phase = P_DATAIN;
1152
1153                         /*
1154                          * If the transfer is of an odd length and in the
1155                          * "in" direction (scsi->HostBus), then it may
1156                          * trigger a bug in the 'WideODD' feature of
1157                          * non-Ultra2 chips.  Force the total data-length
1158                          * to be even by adding an extra, 1 byte, SG,
1159                          * element.  We do this even if we are not currently
1160                          * negotiated wide as negotiation could occur before
1161                          * this command is executed.
1162                          */
1163                         if ((ahc->bugs & AHC_TMODE_WIDEODD_BUG) != 0
1164                          && (ccb->csio.dxfer_len & 0x1) != 0
1165                          && (ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
1166
1167                                 nsegments++;
1168                                 if (nsegments > AHC_NSEG) {
1169
1170                                         ahc_set_transaction_status(scb,
1171                                             CAM_REQ_TOO_BIG);
1172                                         bus_dmamap_unload(ahc->buffer_dmat,
1173                                                           scb->dmamap);
1174                                         ahc_lock(ahc, &s);
1175                                         ahc_free_scb(ahc, scb);
1176                                         ahc_unlock(ahc, &s);
1177                                         xpt_done(ccb);
1178                                         return;
1179                                 }
1180                                 sg->addr = ahc_htole32(ahc->dma_bug_buf);
1181                                 sg->len = ahc_htole32(1);
1182                                 sg++;
1183                         }
1184                 }
1185                 sg--;
1186                 sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
1187
1188                 /* Copy the first SG into the "current" data pointer area */
1189                 scb->hscb->dataptr = scb->sg_list->addr;
1190                 scb->hscb->datacnt = scb->sg_list->len;
1191         } else {
1192                 scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
1193                 scb->hscb->dataptr = 0;
1194                 scb->hscb->datacnt = 0;
1195         }
1196
1197         scb->sg_count = nsegments;
1198
1199         ahc_lock(ahc, &s);
1200
1201         /*
1202          * Last time we need to check if this SCB needs to
1203          * be aborted.
1204          */
1205         if (ahc_get_transaction_status(scb) != CAM_REQ_INPROG) {
1206                 if (nsegments != 0)
1207                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
1208                 ahc_free_scb(ahc, scb);
1209                 ahc_unlock(ahc, &s);
1210                 xpt_done(ccb);
1211                 return;
1212         }
1213
1214         tinfo = ahc_fetch_transinfo(ahc, SCSIID_CHANNEL(ahc, scb->hscb->scsiid),
1215                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1216                                     SCSIID_TARGET(ahc, scb->hscb->scsiid),
1217                                     &tstate);
1218
1219         mask = SCB_GET_TARGET_MASK(ahc, scb);
1220         scb->hscb->scsirate = tinfo->scsirate;
1221         scb->hscb->scsioffset = tinfo->curr.offset;
1222         if ((tstate->ultraenb & mask) != 0)
1223                 scb->hscb->control |= ULTRAENB;
1224
1225         if ((tstate->discenable & mask) != 0
1226          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1227                 scb->hscb->control |= DISCENB;
1228
1229         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1230          && (tinfo->goal.width != 0
1231           || tinfo->goal.offset != 0
1232           || tinfo->goal.ppr_options != 0)) {
1233                 scb->flags |= SCB_NEGOTIATE;
1234                 scb->hscb->control |= MK_MESSAGE;
1235         } else if ((tstate->auto_negotiate & mask) != 0) {
1236                 scb->flags |= SCB_AUTO_NEGOTIATE;
1237                 scb->hscb->control |= MK_MESSAGE;
1238         }
1239
1240         LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
1241
1242         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1243
1244         if (ccb->ccb_h.timeout != CAM_TIME_INFINITY) {
1245                 uint64_t time;
1246
1247                 if (ccb->ccb_h.timeout == CAM_TIME_DEFAULT)
1248                         ccb->ccb_h.timeout = 5 * 1000;
1249
1250                 time = ccb->ccb_h.timeout;
1251                 time *= hz;
1252                 time /= 1000;
1253                 ccb->ccb_h.timeout_ch =
1254                     timeout(ahc_timeout, (caddr_t)scb, time);
1255         }
1256
1257         /*
1258          * We only allow one untagged transaction
1259          * per target in the initiator role unless
1260          * we are storing a full busy target *lun*
1261          * table in SCB space.
1262          */
1263         if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
1264          && (ahc->flags & AHC_SCB_BTT) == 0) {
1265                 struct scb_tailq *untagged_q;
1266                 int target_offset;
1267
1268                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
1269                 untagged_q = &(ahc->untagged_queues[target_offset]);
1270                 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
1271                 scb->flags |= SCB_UNTAGGEDQ;
1272                 if (TAILQ_FIRST(untagged_q) != scb) {
1273                         ahc_unlock(ahc, &s);
1274                         return;
1275                 }
1276         }
1277         scb->flags |= SCB_ACTIVE;
1278
1279         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1280                 /* Define a mapping from our tag to the SCB. */
1281                 ahc->scb_data->scbindex[scb->hscb->tag] = scb;
1282                 ahc_pause(ahc);
1283                 if ((ahc->flags & AHC_PAGESCBS) == 0)
1284                         ahc_outb(ahc, SCBPTR, scb->hscb->tag);
1285                 ahc_outb(ahc, TARG_IMMEDIATE_SCB, scb->hscb->tag);
1286                 ahc_unpause(ahc);
1287         } else {
1288                 ahc_queue_scb(ahc, scb);
1289         }
1290
1291         ahc_unlock(ahc, &s);
1292 }
1293
1294 static void
1295 ahc_poll(struct cam_sim *sim)
1296 {
1297         struct ahc_softc *ahc;
1298
1299         ahc = (struct ahc_softc *)cam_sim_softc(sim);
1300         ahc_intr(ahc);
1301 }
1302
1303 static void
1304 ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
1305                struct ccb_scsiio *csio, struct scb *scb)
1306 {
1307         struct hardware_scb *hscb;
1308         struct ccb_hdr *ccb_h;
1309
1310         hscb = scb->hscb;
1311         ccb_h = &csio->ccb_h;
1312
1313         csio->resid = 0;
1314         csio->sense_resid = 0;
1315         if (ccb_h->func_code == XPT_SCSI_IO) {
1316                 hscb->cdb_len = csio->cdb_len;
1317                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1318
1319                         if (hscb->cdb_len > sizeof(hscb->cdb32)
1320                          || (ccb_h->flags & CAM_CDB_PHYS) != 0) {
1321                                 u_long s;
1322
1323                                 ahc_set_transaction_status(scb,
1324                                                            CAM_REQ_INVALID);
1325                                 ahc_lock(ahc, &s);
1326                                 ahc_free_scb(ahc, scb);
1327                                 ahc_unlock(ahc, &s);
1328                                 xpt_done((union ccb *)csio);
1329                                 return;
1330                         }
1331                         if (hscb->cdb_len > 12) {
1332                                 memcpy(hscb->cdb32,
1333                                        csio->cdb_io.cdb_ptr,
1334                                        hscb->cdb_len);
1335                                 scb->flags |= SCB_CDB32_PTR;
1336                         } else {
1337                                 memcpy(hscb->shared_data.cdb,
1338                                        csio->cdb_io.cdb_ptr,
1339                                        hscb->cdb_len);
1340                         }
1341                 } else {
1342                         if (hscb->cdb_len > 12) {
1343                                 memcpy(hscb->cdb32, csio->cdb_io.cdb_bytes,
1344                                        hscb->cdb_len);
1345                                 scb->flags |= SCB_CDB32_PTR;
1346                         } else {
1347                                 memcpy(hscb->shared_data.cdb,
1348                                        csio->cdb_io.cdb_bytes,
1349                                        hscb->cdb_len);
1350                         }
1351                 }
1352         }
1353
1354         /* Only use S/G if there is a transfer */
1355         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1356                 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
1357                         /* We've been given a pointer to a single buffer */
1358                         if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
1359                                 int s;
1360                                 int error;
1361
1362                                 s = splsoftvm();
1363                                 error = bus_dmamap_load(ahc->buffer_dmat,
1364                                                         scb->dmamap,
1365                                                         csio->data_ptr,
1366                                                         csio->dxfer_len,
1367                                                         ahc_execute_scb,
1368                                                         scb, /*flags*/0);
1369                                 if (error == EINPROGRESS) {
1370                                         /*
1371                                          * So as to maintain ordering,
1372                                          * freeze the controller queue
1373                                          * until our mapping is
1374                                          * returned.
1375                                          */
1376                                         xpt_freeze_simq(sim,
1377                                                         /*count*/1);
1378                                         scb->io_ctx->ccb_h.status |=
1379                                             CAM_RELEASE_SIMQ;
1380                                 }
1381                                 splx(s);
1382                         } else {
1383                                 struct bus_dma_segment seg;
1384
1385                                 /* Pointer to physical buffer */
1386                                 if (csio->dxfer_len > AHC_MAXTRANSFER_SIZE)
1387                                         panic("ahc_setup_data - Transfer size "
1388                                               "larger than can device max");
1389
1390                                 seg.ds_addr =
1391                                     (bus_addr_t)(vm_offset_t)csio->data_ptr;
1392                                 seg.ds_len = csio->dxfer_len;
1393                                 ahc_execute_scb(scb, &seg, 1, 0);
1394                         }
1395                 } else {
1396                         struct bus_dma_segment *segs;
1397
1398                         if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
1399                                 panic("ahc_setup_data - Physical segment "
1400                                       "pointers unsupported");
1401
1402                         if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
1403                                 panic("ahc_setup_data - Virtual segment "
1404                                       "addresses unsupported");
1405
1406                         /* Just use the segments provided */
1407                         segs = (struct bus_dma_segment *)csio->data_ptr;
1408                         ahc_execute_scb(scb, segs, csio->sglist_cnt, 0);
1409                 }
1410         } else {
1411                 ahc_execute_scb(scb, NULL, 0, 0);
1412         }
1413 }
1414
1415 static void
1416 ahc_set_recoveryscb(struct ahc_softc *ahc, struct scb *scb) {
1417
1418         if ((scb->flags & SCB_RECOVERY_SCB) == 0) {
1419                 struct scb *list_scb;
1420
1421                 scb->flags |= SCB_RECOVERY_SCB;
1422
1423                 /*
1424                  * Take all queued, but not sent SCBs out of the equation.
1425                  * Also ensure that no new CCBs are queued to us while we
1426                  * try to fix this problem.
1427                  */
1428                 if ((scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
1429                         xpt_freeze_simq(SCB_GET_SIM(ahc, scb), /*count*/1);
1430                         scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
1431                 }
1432
1433                 /*
1434                  * Go through all of our pending SCBs and remove
1435                  * any scheduled timeouts for them.  We will reschedule
1436                  * them after we've successfully fixed this problem.
1437                  */
1438                 LIST_FOREACH(list_scb, &ahc->pending_scbs, pending_links) {
1439                         union ccb *ccb;
1440
1441                         ccb = list_scb->io_ctx;
1442                         untimeout(ahc_timeout, list_scb, ccb->ccb_h.timeout_ch);
1443                 }
1444         }
1445 }
1446
1447 void
1448 ahc_timeout(void *arg)
1449 {
1450         struct  scb *scb;
1451         struct  ahc_softc *ahc;
1452         long    s;
1453         int     found;
1454         u_int   last_phase;
1455         int     target;
1456         int     lun;
1457         int     i;
1458         char    channel;
1459
1460         scb = (struct scb *)arg;
1461         ahc = (struct ahc_softc *)scb->ahc_softc;
1462
1463         ahc_lock(ahc, &s);
1464
1465         ahc_pause_and_flushwork(ahc);
1466
1467         if ((scb->flags & SCB_ACTIVE) == 0) {
1468                 /* Previous timeout took care of me already */
1469                 printf("%s: Timedout SCB already complete. "
1470                        "Interrupts may not be functioning.\n", ahc_name(ahc));
1471                 ahc_unpause(ahc);
1472                 ahc_unlock(ahc, &s);
1473                 return;
1474         }
1475
1476         target = SCB_GET_TARGET(ahc, scb);
1477         channel = SCB_GET_CHANNEL(ahc, scb);
1478         lun = SCB_GET_LUN(scb);
1479
1480         ahc_print_path(ahc, scb);
1481         printf("SCB 0x%x - timed out\n", scb->hscb->tag);
1482         ahc_dump_card_state(ahc);
1483         last_phase = ahc_inb(ahc, LASTPHASE);
1484         if (scb->sg_count > 0) {
1485                 for (i = 0; i < scb->sg_count; i++) {
1486                         printf("sg[%d] - Addr 0x%x : Length %d\n",
1487                                i,
1488                                scb->sg_list[i].addr,
1489                                scb->sg_list[i].len & AHC_SG_LEN_MASK);
1490                 }
1491         }
1492         if (scb->flags & (SCB_DEVICE_RESET|SCB_ABORT)) {
1493                 /*
1494                  * Been down this road before.
1495                  * Do a full bus reset.
1496                  */
1497 bus_reset:
1498                 ahc_set_transaction_status(scb, CAM_CMD_TIMEOUT);
1499                 found = ahc_reset_channel(ahc, channel, /*Initiate Reset*/TRUE);
1500                 printf("%s: Issued Channel %c Bus Reset. "
1501                        "%d SCBs aborted\n", ahc_name(ahc), channel, found);
1502         } else {
1503                 /*
1504                  * If we are a target, transition to bus free and report
1505                  * the timeout.
1506                  *
1507                  * The target/initiator that is holding up the bus may not
1508                  * be the same as the one that triggered this timeout
1509                  * (different commands have different timeout lengths).
1510                  * If the bus is idle and we are actiing as the initiator
1511                  * for this request, queue a BDR message to the timed out
1512                  * target.  Otherwise, if the timed out transaction is
1513                  * active:
1514                  *   Initiator transaction:
1515                  *      Stuff the message buffer with a BDR message and assert
1516                  *      ATN in the hopes that the target will let go of the bus
1517                  *      and go to the mesgout phase.  If this fails, we'll
1518                  *      get another timeout 2 seconds later which will attempt
1519                  *      a bus reset.
1520                  *
1521                  *   Target transaction:
1522                  *      Transition to BUS FREE and report the error.
1523                  *      It's good to be the target!
1524                  */
1525                 u_int active_scb_index;
1526                 u_int saved_scbptr;
1527
1528                 saved_scbptr = ahc_inb(ahc, SCBPTR);
1529                 active_scb_index = ahc_inb(ahc, SCB_TAG);
1530
1531                 if ((ahc_inb(ahc, SEQ_FLAGS) & NOT_IDENTIFIED) == 0
1532                   && (active_scb_index < ahc->scb_data->numscbs)) {
1533                         struct scb *active_scb;
1534
1535                         /*
1536                          * If the active SCB is not us, assume that
1537                          * the active SCB has a longer timeout than
1538                          * the timedout SCB, and wait for the active
1539                          * SCB to timeout.
1540                          */
1541                         active_scb = ahc_lookup_scb(ahc, active_scb_index);
1542                         if (active_scb != scb) {
1543                                 struct   ccb_hdr *ccbh;
1544                                 uint64_t newtimeout;
1545
1546                                 ahc_print_path(ahc, scb);
1547                                 printf("Other SCB Timeout%s",
1548                                        (scb->flags & SCB_OTHERTCL_TIMEOUT) != 0
1549                                        ? " again\n" : "\n");
1550                                 scb->flags |= SCB_OTHERTCL_TIMEOUT;
1551                                 newtimeout =
1552                                     MAX(active_scb->io_ctx->ccb_h.timeout,
1553                                         scb->io_ctx->ccb_h.timeout);
1554                                 newtimeout *= hz;
1555                                 newtimeout /= 1000;
1556                                 ccbh = &scb->io_ctx->ccb_h;
1557                                 scb->io_ctx->ccb_h.timeout_ch =
1558                                     timeout(ahc_timeout, scb, newtimeout);
1559                                 ahc_unpause(ahc);
1560                                 ahc_unlock(ahc, &s);
1561                                 return;
1562                         }
1563
1564                         /* It's us */
1565                         if ((scb->flags & SCB_TARGET_SCB) != 0) {
1566
1567                                 /*
1568                                  * Send back any queued up transactions
1569                                  * and properly record the error condition.
1570                                  */
1571                                 ahc_abort_scbs(ahc, SCB_GET_TARGET(ahc, scb),
1572                                                SCB_GET_CHANNEL(ahc, scb),
1573                                                SCB_GET_LUN(scb),
1574                                                scb->hscb->tag,
1575                                                ROLE_TARGET,
1576                                                CAM_CMD_TIMEOUT);
1577
1578                                 /* Will clear us from the bus */
1579                                 ahc_restart(ahc);
1580                                 ahc_unlock(ahc, &s);
1581                                 return;
1582                         }
1583
1584                         ahc_set_recoveryscb(ahc, active_scb);
1585                         ahc_outb(ahc, MSG_OUT, HOST_MSG);
1586                         ahc_outb(ahc, SCSISIGO, last_phase|ATNO);
1587                         ahc_print_path(ahc, active_scb);
1588                         printf("BDR message in message buffer\n");
1589                         active_scb->flags |= SCB_DEVICE_RESET;
1590                         active_scb->io_ctx->ccb_h.timeout_ch =
1591                             timeout(ahc_timeout, (caddr_t)active_scb, 2 * hz);
1592                         ahc_unpause(ahc);
1593                 } else {
1594                         int      disconnected;
1595
1596                         /* XXX Shouldn't panic.  Just punt instead? */
1597                         if ((scb->flags & SCB_TARGET_SCB) != 0)
1598                                 panic("Timed-out target SCB but bus idle");
1599
1600                         if (last_phase != P_BUSFREE
1601                          && (ahc_inb(ahc, SSTAT0) & TARGET) != 0) {
1602                                 /* XXX What happened to the SCB? */
1603                                 /* Hung target selection.  Goto busfree */
1604                                 printf("%s: Hung target selection\n",
1605                                        ahc_name(ahc));
1606                                 ahc_restart(ahc);
1607                                 ahc_unlock(ahc, &s);
1608                                 return;
1609                         }
1610
1611                         if (ahc_search_qinfifo(ahc, target, channel, lun,
1612                                                scb->hscb->tag, ROLE_INITIATOR,
1613                                                /*status*/0, SEARCH_COUNT) > 0) {
1614                                 disconnected = FALSE;
1615                         } else {
1616                                 disconnected = TRUE;
1617                         }
1618
1619                         if (disconnected) {
1620
1621                                 ahc_set_recoveryscb(ahc, scb);
1622                                 /*
1623                                  * Actually re-queue this SCB in an attempt
1624                                  * to select the device before it reconnects.
1625                                  * In either case (selection or reselection),
1626                                  * we will now issue a target reset to the
1627                                  * timed-out device.
1628                                  *
1629                                  * Set the MK_MESSAGE control bit indicating
1630                                  * that we desire to send a message.  We
1631                                  * also set the disconnected flag since
1632                                  * in the paging case there is no guarantee
1633                                  * that our SCB control byte matches the
1634                                  * version on the card.  We don't want the
1635                                  * sequencer to abort the command thinking
1636                                  * an unsolicited reselection occurred.
1637                                  */
1638                                 scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
1639                                 scb->flags |= SCB_DEVICE_RESET;
1640
1641                                 /*
1642                                  * Remove any cached copy of this SCB in the
1643                                  * disconnected list in preparation for the
1644                                  * queuing of our abort SCB.  We use the
1645                                  * same element in the SCB, SCB_NEXT, for
1646                                  * both the qinfifo and the disconnected list.
1647                                  */
1648                                 ahc_search_disc_list(ahc, target, channel,
1649                                                      lun, scb->hscb->tag,
1650                                                      /*stop_on_first*/TRUE,
1651                                                      /*remove*/TRUE,
1652                                                      /*save_state*/FALSE);
1653
1654                                 /*
1655                                  * In the non-paging case, the sequencer will
1656                                  * never re-reference the in-core SCB.
1657                                  * To make sure we are notified during
1658                                  * reslection, set the MK_MESSAGE flag in
1659                                  * the card's copy of the SCB.
1660                                  */
1661                                 if ((ahc->flags & AHC_PAGESCBS) == 0) {
1662                                         ahc_outb(ahc, SCBPTR, scb->hscb->tag);
1663                                         ahc_outb(ahc, SCB_CONTROL,
1664                                                  ahc_inb(ahc, SCB_CONTROL)
1665                                                 | MK_MESSAGE);
1666                                 }
1667
1668                                 /*
1669                                  * Clear out any entries in the QINFIFO first
1670                                  * so we are the next SCB for this target
1671                                  * to run.
1672                                  */
1673                                 ahc_search_qinfifo(ahc,
1674                                                    SCB_GET_TARGET(ahc, scb),
1675                                                    channel, SCB_GET_LUN(scb),
1676                                                    SCB_LIST_NULL,
1677                                                    ROLE_INITIATOR,
1678                                                    CAM_REQUEUE_REQ,
1679                                                    SEARCH_COMPLETE);
1680                                 ahc_print_path(ahc, scb);
1681                                 printf("Queuing a BDR SCB\n");
1682                                 ahc_qinfifo_requeue_tail(ahc, scb);
1683                                 ahc_outb(ahc, SCBPTR, saved_scbptr);
1684                                 scb->io_ctx->ccb_h.timeout_ch =
1685                                     timeout(ahc_timeout, (caddr_t)scb, 2 * hz);
1686                                 ahc_unpause(ahc);
1687                         } else {
1688                                 /* Go "immediatly" to the bus reset */
1689                                 /* This shouldn't happen */
1690                                 ahc_set_recoveryscb(ahc, scb);
1691                                 ahc_print_path(ahc, scb);
1692                                 printf("SCB %d: Immediate reset.  "
1693                                         "Flags = 0x%x\n", scb->hscb->tag,
1694                                         scb->flags);
1695                                 goto bus_reset;
1696                         }
1697                 }
1698         }
1699         ahc_unlock(ahc, &s);
1700 }
1701
1702 static void
1703 ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb)
1704 {
1705         union ccb *abort_ccb;
1706
1707         abort_ccb = ccb->cab.abort_ccb;
1708         switch (abort_ccb->ccb_h.func_code) {
1709         case XPT_ACCEPT_TARGET_IO:
1710         case XPT_IMMED_NOTIFY:
1711         case XPT_CONT_TARGET_IO:
1712         {
1713                 struct ahc_tmode_tstate *tstate;
1714                 struct ahc_tmode_lstate *lstate;
1715                 struct ccb_hdr_slist *list;
1716                 cam_status status;
1717
1718                 status = ahc_find_tmode_devs(ahc, sim, abort_ccb, &tstate,
1719                                              &lstate, TRUE);
1720
1721                 if (status != CAM_REQ_CMP) {
1722                         ccb->ccb_h.status = status;
1723                         break;
1724                 }
1725
1726                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1727                         list = &lstate->accept_tios;
1728                 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
1729                         list = &lstate->immed_notifies;
1730                 else
1731                         list = NULL;
1732
1733                 if (list != NULL) {
1734                         struct ccb_hdr *curelm;
1735                         int found;
1736
1737                         curelm = SLIST_FIRST(list);
1738                         found = 0;
1739                         if (curelm == &abort_ccb->ccb_h) {
1740                                 found = 1;
1741                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1742                         } else {
1743                                 while(curelm != NULL) {
1744                                         struct ccb_hdr *nextelm;
1745
1746                                         nextelm =
1747                                             SLIST_NEXT(curelm, sim_links.sle);
1748
1749                                         if (nextelm == &abort_ccb->ccb_h) {
1750                                                 found = 1;
1751                                                 SLIST_NEXT(curelm,
1752                                                            sim_links.sle) =
1753                                                     SLIST_NEXT(nextelm,
1754                                                                sim_links.sle);
1755                                                 break;
1756                                         }
1757                                         curelm = nextelm;
1758                                 }
1759                         }
1760
1761                         if (found) {
1762                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1763                                 xpt_done(abort_ccb);
1764                                 ccb->ccb_h.status = CAM_REQ_CMP;
1765                         } else {
1766                                 xpt_print_path(abort_ccb->ccb_h.path);
1767                                 printf("Not found\n");
1768                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1769                         }
1770                         break;
1771                 }
1772                 /* FALLTHROUGH */
1773         }
1774         case XPT_SCSI_IO:
1775                 /* XXX Fully implement the hard ones */
1776                 ccb->ccb_h.status = CAM_UA_ABORT;
1777                 break;
1778         default:
1779                 ccb->ccb_h.status = CAM_REQ_INVALID;
1780                 break;
1781         }
1782         xpt_done(ccb);
1783 }
1784
1785 void
1786 ahc_send_async(struct ahc_softc *ahc, char channel, u_int target,
1787                 u_int lun, ac_code code, void *opt_arg)
1788 {
1789         struct  ccb_trans_settings cts;
1790         struct cam_path *path;
1791         void *arg;
1792         int error;
1793
1794         arg = NULL;
1795         error = ahc_create_path(ahc, channel, target, lun, &path);
1796
1797         if (error != CAM_REQ_CMP)
1798                 return;
1799
1800         switch (code) {
1801         case AC_TRANSFER_NEG:
1802         {
1803 #ifdef AHC_NEW_TRAN_SETTINGS
1804                 struct  ccb_trans_settings_scsi *scsi;
1805
1806                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1807                 scsi = &cts.proto_specific.scsi;
1808 #else
1809                 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1810 #endif
1811                 cts.ccb_h.path = path;
1812                 cts.ccb_h.target_id = target;
1813                 cts.ccb_h.target_lun = lun;
1814                 ahc_get_tran_settings(ahc, channel == 'A' ? ahc->our_id
1815                                                           : ahc->our_id_b,
1816                                       channel, &cts);
1817                 arg = &cts;
1818 #ifdef AHC_NEW_TRAN_SETTINGS
1819                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1820                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1821 #else
1822                 cts.valid &= ~CCB_TRANS_TQ_VALID;
1823                 cts.flags &= ~CCB_TRANS_TAG_ENB;
1824 #endif
1825                 if (opt_arg == NULL)
1826                         break;
1827                 if (*((ahc_queue_alg *)opt_arg) == AHC_QUEUE_TAGGED)
1828 #ifdef AHC_NEW_TRAN_SETTINGS
1829                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1830                 scsi->valid |= CTS_SCSI_VALID_TQ;
1831 #else
1832                         cts.flags |= CCB_TRANS_TAG_ENB;
1833                 cts.valid |= CCB_TRANS_TQ_VALID;
1834 #endif
1835                 break;
1836         }
1837         case AC_SENT_BDR:
1838         case AC_BUS_RESET:
1839                 break;
1840         default:
1841                 panic("ahc_send_async: Unexpected async event");
1842         }
1843         xpt_async(code, path, arg);
1844         xpt_free_path(path);
1845 }
1846
1847 void
1848 ahc_platform_set_tags(struct ahc_softc *ahc,
1849                       struct ahc_devinfo *devinfo, int enable)
1850 {
1851 }
1852
1853 int
1854 ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
1855 {
1856         ahc->platform_data = malloc(sizeof(struct ahc_platform_data), M_DEVBUF,
1857             M_NOWAIT | M_ZERO);
1858         if (ahc->platform_data == NULL)
1859                 return (ENOMEM);
1860         return (0);
1861 }
1862
1863 void
1864 ahc_platform_free(struct ahc_softc *ahc)
1865 {
1866         struct ahc_platform_data *pdata;
1867
1868         pdata = ahc->platform_data;
1869         if (pdata != NULL) {
1870                 if (pdata->regs != NULL)
1871                         bus_release_resource(ahc->dev_softc,
1872                                              pdata->regs_res_type,
1873                                              pdata->regs_res_id,
1874                                              pdata->regs);
1875
1876                 if (pdata->irq != NULL)
1877                         bus_release_resource(ahc->dev_softc,
1878                                              pdata->irq_res_type,
1879                                              0, pdata->irq);
1880
1881                 if (pdata->sim_b != NULL) {
1882                         xpt_async(AC_LOST_DEVICE, pdata->path_b, NULL);
1883                         xpt_free_path(pdata->path_b);
1884                         xpt_bus_deregister(cam_sim_path(pdata->sim_b));
1885                         cam_sim_free(pdata->sim_b, /*free_devq*/TRUE);
1886                 }
1887                 if (pdata->sim != NULL) {
1888                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1889                         xpt_free_path(pdata->path);
1890                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1891                         cam_sim_free(pdata->sim, /*free_devq*/TRUE);
1892                 }
1893                 if (pdata->eh != NULL)
1894                         EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
1895                 free(ahc->platform_data, M_DEVBUF);
1896         }
1897 }
1898
1899 int
1900 ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc)
1901 {
1902         /* We don't sort softcs under FreeBSD so report equal always */
1903         return (0);
1904 }
1905
1906 int
1907 ahc_detach(device_t dev)
1908 {
1909         struct ahc_softc *ahc;
1910         u_long l;
1911         u_long s;
1912
1913         ahc_list_lock(&l);
1914         device_printf(dev, "detaching device\n");
1915         ahc = device_get_softc(dev);
1916         ahc = ahc_find_softc(ahc);
1917         if (ahc == NULL) {
1918                 device_printf(dev, "aic7xxx already detached\n");
1919                 ahc_list_unlock(&l);
1920                 return (ENOENT);
1921         }
1922         ahc_lock(ahc, &s);
1923         ahc_intr_enable(ahc, FALSE);
1924         bus_teardown_intr(dev, ahc->platform_data->irq, ahc->platform_data->ih);
1925         ahc_unlock(ahc, &s);
1926         ahc_free(ahc);
1927         ahc_list_unlock(&l);
1928         return (0);
1929 }
1930
1931 #if UNUSED
1932 static void
1933 ahc_dump_targcmd(struct target_cmd *cmd)
1934 {
1935         uint8_t *byte;
1936         uint8_t *last_byte;
1937         int i;
1938
1939         byte = &cmd->initiator_channel;
1940         /* Debugging info for received commands */
1941         last_byte = &cmd[1].initiator_channel;
1942
1943         i = 0;
1944         while (byte < last_byte) {
1945                 if (i == 0)
1946                         printf("\t");
1947                 printf("%#x", *byte++);
1948                 i++;
1949                 if (i == 8) {
1950                         printf("\n");
1951                         i = 0;
1952                 } else {
1953                         printf(", ");
1954                 }
1955         }
1956 }
1957 #endif
1958
1959 static int
1960 ahc_modevent(module_t mod, int type, void *data)
1961 {
1962         /* XXX Deal with busy status on unload. */
1963         return 0;
1964 }
1965
1966 static moduledata_t ahc_mod = {
1967         "ahc",
1968         ahc_modevent,
1969         NULL
1970 };
1971
1972 DECLARE_MODULE(ahc, ahc_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1973 MODULE_DEPEND(ahc, cam, 1, 1, 1);
1974 MODULE_VERSION(ahc, 1);