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#20 $
  32  *
  33  * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx_osm.c,v 1.45 2006/09/05 20:28:28 mjacob Exp $
  34  * $DragonFly: src/sys/dev/disk/aic7xxx/aic7xxx_osm.c,v 1.23 2008/05/18 20:30:21 pavalos Exp $
  35  */
  36
  37 #include "aic7xxx_osm.h"
  38 #include "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 "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_MPSAFE, ahc_platform_intr, ahc,
 111                                &ahc->platform_data->ih, NULL);
 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         int bus_id;
 149         int bus_id2;
 150         struct cam_sim *sim;
 151         struct cam_sim *sim2;
 152         struct cam_path *path;
 153         struct cam_path *path2;
 154         int count;
 155
 156         count = 0;
 157         sim = NULL;
 158         sim2 = NULL;
 159         path = NULL;
 160         path2 = NULL;
 161
 162         /*
 163          * Create a thread to perform all recovery.
 164          */
 165         if (ahc_spawn_recovery_thread(ahc) != 0)
 166                 goto fail;
 167
 168         ahc_controller_info(ahc, ahc_info);
 169         kprintf("%s\n", ahc_info);
 170         ahc_lock(ahc);
 171
 172         /*
 173          * Attach secondary channel first if the user has
 174          * declared it the primary channel.
 175          */
 176         if ((ahc->features & AHC_TWIN) != 0
 177          && (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
 178                 bus_id = 1;
 179                 bus_id2 = 0;
 180         } else {
 181                 bus_id = 0;
 182                 bus_id2 = 1;
 183         }
 184
 185         /*
 186          * Construct our first channel SIM entry
 187          */
 188         sim = cam_sim_alloc(ahc_action, ahc_poll, "ahc", ahc,
 189                             device_get_unit(ahc->dev_softc),
 190                             &ahc->platform_data->lock, 1, AHC_MAX_QUEUE, NULL);
 191         if (sim == NULL)
 192                 goto fail;
 193
 194         if (xpt_bus_register(sim, bus_id) != CAM_SUCCESS) {
 195                 cam_sim_free(sim);
 196                 sim = NULL;
 197                 goto fail;
 198         }
 199
 200         if (xpt_create_path(&path, /*periph*/NULL,
 201                             cam_sim_path(sim), CAM_TARGET_WILDCARD,
 202                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 203                 xpt_bus_deregister(cam_sim_path(sim));
 204                 cam_sim_free(sim);
 205                 sim = NULL;
 206                 goto fail;
 207         }
 208
 209         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 210         csa.ccb_h.func_code = XPT_SASYNC_CB;
 211         csa.event_enable = AC_LOST_DEVICE;
 212         csa.callback = ahc_async;
 213         csa.callback_arg = sim;
 214         xpt_action((union ccb *)&csa);
 215         count++;
 216
 217         if (ahc->features & AHC_TWIN) {
 218                 sim2 = cam_sim_alloc(ahc_action, ahc_poll, "ahc",
 219                                     ahc, device_get_unit(ahc->dev_softc),
 220                                     &ahc->platform_data->lock, 1,
 221                                     AHC_MAX_QUEUE, NULL);
 222
 223                 if (sim2 == NULL) {
 224                         kprintf("ahc_attach: Unable to attach second "
 225                                "bus due to resource shortage");
 226                         goto fail;
 227                 }
 228
 229                 if (xpt_bus_register(sim2, bus_id2) != CAM_SUCCESS) {
 230                         kprintf("ahc_attach: Unable to attach second "
 231                                "bus due to resource shortage");
 232                         /*
 233                          * We do not want to destroy the device queue
 234                          * because the first bus is using it.
 235                          */
 236                         cam_sim_free(sim2);
 237                         goto fail;
 238                 }
 239
 240                 if (xpt_create_path(&path2, /*periph*/NULL,
 241                                     cam_sim_path(sim2),
 242                                     CAM_TARGET_WILDCARD,
 243                                     CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 244                         xpt_bus_deregister(cam_sim_path(sim2));
 245                         cam_sim_free(sim2);
 246                         sim2 = NULL;
 247                         goto fail;
 248                 }
 249                 xpt_setup_ccb(&csa.ccb_h, path2, /*priority*/5);
 250                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 251                 csa.event_enable = AC_LOST_DEVICE;
 252                 csa.callback = ahc_async;
 253                 csa.callback_arg = sim2;
 254                 xpt_action((union ccb *)&csa);
 255                 count++;
 256         }
 257
 258 fail:
 259         if ((ahc->features & AHC_TWIN) != 0
 260          && (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
 261                 ahc->platform_data->sim_b = sim;
 262                 ahc->platform_data->path_b = path;
 263                 ahc->platform_data->sim = sim2;
 264                 ahc->platform_data->path = path2;
 265         } else {
 266                 ahc->platform_data->sim = sim;
 267                 ahc->platform_data->path = path;
 268                 ahc->platform_data->sim_b = sim2;
 269                 ahc->platform_data->path_b = path2;
 270         }
 271         ahc_unlock(ahc);
 272
 273         if (count != 0) {
 274                 /* We have to wait until after any system dumps... */
 275                 ahc->platform_data->eh =
 276                     EVENTHANDLER_REGISTER(shutdown_post_sync, ahc_shutdown,
 277                                           ahc, SHUTDOWN_PRI_DRIVER);
 278                 ahc_intr_enable(ahc, TRUE);
 279         }
 280
 281         return (count);
 282 }
 283
 284 /*
 285  * Catch an interrupt from the adapter
 286  */
 287 void
 288 ahc_platform_intr(void *arg)
 289 {
 290         struct  ahc_softc *ahc;
 291
 292         ahc = (struct ahc_softc *)arg;
 293         ahc_lock(ahc);
 294         ahc_intr(ahc);
 295         ahc_unlock(ahc);
 296 }
 297
 298 /*
 299  * We have an scb which has been processed by the
 300  * adaptor, now we look to see how the operation
 301  * went.
 302  */
 303 void
 304 ahc_done(struct ahc_softc *ahc, struct scb *scb)
 305 {
 306         union ccb *ccb;
 307
 308         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
 309                   ("ahc_done - scb %d\n", scb->hscb->tag));
 310
 311         ccb = scb->io_ctx;
 312         LIST_REMOVE(scb, pending_links);
 313         if ((scb->flags & SCB_TIMEDOUT) != 0)
 314                 LIST_REMOVE(scb, timedout_links);
 315         if ((scb->flags & SCB_UNTAGGEDQ) != 0) {
 316                 struct scb_tailq *untagged_q;
 317                 int target_offset;
 318
 319                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
 320                 untagged_q = &ahc->untagged_queues[target_offset];
 321                 TAILQ_REMOVE(untagged_q, scb, links.tqe);
 322                 scb->flags &= ~SCB_UNTAGGEDQ;
 323                 ahc_run_untagged_queue(ahc, untagged_q);
 324         }
 325
 326         callout_stop(&scb->io_timer);
 327
 328         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 329                 bus_dmasync_op_t op;
 330
 331                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 332                         op = BUS_DMASYNC_POSTREAD;
 333                 else
 334                         op = BUS_DMASYNC_POSTWRITE;
 335                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
 336                 bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
 337         }
 338
 339         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 340                 struct cam_path *ccb_path;
 341
 342                 /*
 343                  * If we have finally disconnected, clean up our
 344                  * pending device state.
 345                  * XXX - There may be error states that cause where
 346                  *       we will remain connected.
 347                  */
 348                 ccb_path = ccb->ccb_h.path;
 349                 if (ahc->pending_device != NULL
 350                  && xpt_path_comp(ahc->pending_device->path, ccb_path) == 0) {
 351
 352                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 353                                 ahc->pending_device = NULL;
 354                         } else {
 355                                 if (bootverbose) {
 356                                         xpt_print_path(ccb->ccb_h.path);
 357                                         kprintf("Still connected\n");
 358                                 }
 359                                 aic_freeze_ccb(ccb);
 360                         }
 361                 }
 362
 363                 if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
 364                         ccb->ccb_h.status |= CAM_REQ_CMP;
 365                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 366                 ahc_free_scb(ahc, scb);
 367                 xpt_done(ccb);
 368                 return;
 369         }
 370
 371         /*
 372          * If the recovery SCB completes, we have to be
 373          * out of our timeout.
 374          */
 375         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
 376                 struct  scb *list_scb;
 377
 378                 ahc->scb_data->recovery_scbs--;
 379
 380                 if (aic_get_transaction_status(scb) == CAM_BDR_SENT
 381                  || aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
 382                         aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
 383
 384                 if (ahc->scb_data->recovery_scbs == 0) {
 385                         /*
 386                          * All recovery actions have completed successfully,
 387                          * so reinstate the timeouts for all other pending
 388                          * commands.
 389                          */
 390                         LIST_FOREACH(list_scb, &ahc->pending_scbs,
 391                                      pending_links) {
 392
 393                                 aic_scb_timer_reset(list_scb,
 394                                                     aic_get_timeout(scb));
 395                         }
 396
 397                         ahc_print_path(ahc, scb);
 398                         kprintf("no longer in timeout, status = %x\n",
 399                                ccb->ccb_h.status);
 400                 }
 401         }
 402
 403         /* Don't clobber any existing error state */
 404         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
 405                 ccb->ccb_h.status |= CAM_REQ_CMP;
 406         } else if ((scb->flags & SCB_SENSE) != 0) {
 407                 /*
 408                  * We performed autosense retrieval.
 409                  *
 410                  * Zero any sense not transferred by the
 411                  * device.  The SCSI spec mandates that any
 412                  * untransfered data should be assumed to be
 413                  * zero.  Complete the 'bounce' of sense information
 414                  * through buffers accessible via bus-space by
 415                  * copying it into the clients csio.
 416                  */
 417                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 418                 memcpy(&ccb->csio.sense_data,
 419                        ahc_get_sense_buf(ahc, scb),
 420                        (aic_le32toh(scb->sg_list->len) & AHC_SG_LEN_MASK)
 421                        - ccb->csio.sense_resid);
 422                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 423         }
 424         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 425         ahc_free_scb(ahc, scb);
 426         xpt_done(ccb);
 427 }
 428
 429 static void
 430 ahc_action(struct cam_sim *sim, union ccb *ccb)
 431 {
 432         struct  ahc_softc *ahc;
 433         struct  ahc_tmode_lstate *lstate;
 434         u_int   target_id;
 435         u_int   our_id;
 436
 437         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahc_action\n"));
 438
 439         ahc = (struct ahc_softc *)cam_sim_softc(sim);
 440
 441         target_id = ccb->ccb_h.target_id;
 442         our_id = SIM_SCSI_ID(ahc, sim);
 443
 444         switch (ccb->ccb_h.func_code) {
 445         /* Common cases first */
 446         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 447         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 448         {
 449                 struct     ahc_tmode_tstate *tstate;
 450                 cam_status status;
 451
 452                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
 453                                              &lstate, TRUE);
 454
 455                 if (status != CAM_REQ_CMP) {
 456                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 457                                 /* Response from the black hole device */
 458                                 tstate = NULL;
 459                                 lstate = ahc->black_hole;
 460                         } else {
 461                                 ccb->ccb_h.status = status;
 462                                 xpt_done(ccb);
 463                                 break;
 464                         }
 465                 }
 466                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 467
 468                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 469                                           sim_links.sle);
 470                         ccb->ccb_h.status = CAM_REQ_INPROG;
 471                         if ((ahc->flags & AHC_TQINFIFO_BLOCKED) != 0)
 472                                 ahc_run_tqinfifo(ahc, /*paused*/FALSE);
 473                         break;
 474                 }
 475
 476                 /*
 477                  * The target_id represents the target we attempt to
 478                  * select.  In target mode, this is the initiator of
 479                  * the original command.
 480                  */
 481                 our_id = target_id;
 482                 target_id = ccb->csio.init_id;
 483                 /* FALLTHROUGH */
 484         }
 485         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 486         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 487         {
 488                 struct  scb *scb;
 489                 struct  hardware_scb *hscb;
 490
 491                 if ((ahc->flags & AHC_INITIATORROLE) == 0
 492                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 493                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 494                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 495                         xpt_done(ccb);
 496                         return;
 497                 }
 498
 499                 /*
 500                  * get an scb to use.
 501                  */
 502                 if ((scb = ahc_get_scb(ahc)) == NULL) {
 503
 504                         xpt_freeze_simq(sim, /*count*/1);
 505                         ahc->flags |= AHC_RESOURCE_SHORTAGE;
 506                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 507                         xpt_done(ccb);
 508                         return;
 509                 }
 510
 511                 hscb = scb->hscb;
 512
 513                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 514                           ("start scb(%p)\n", scb));
 515                 scb->io_ctx = ccb;
 516                 /*
 517                  * So we can find the SCB when an abort is requested
 518                  */
 519                 ccb->ccb_h.ccb_scb_ptr = scb;
 520
 521                 /*
 522                  * Put all the arguments for the xfer in the scb
 523                  */
 524                 hscb->control = 0;
 525                 hscb->scsiid = BUILD_SCSIID(ahc, sim, target_id, our_id);
 526                 hscb->lun = ccb->ccb_h.target_lun;
 527                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 528                         hscb->cdb_len = 0;
 529                         scb->flags |= SCB_DEVICE_RESET;
 530                         hscb->control |= MK_MESSAGE;
 531                         ahc_execute_scb(scb, NULL, 0, 0);
 532                 } else {
 533                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 534                                 struct target_data *tdata;
 535
 536                                 tdata = &hscb->shared_data.tdata;
 537                                 if (ahc->pending_device == lstate)
 538                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 539                                 hscb->control |= TARGET_SCB;
 540                                 scb->flags |= SCB_TARGET_SCB;
 541                                 tdata->target_phases = 0;
 542                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 543                                         tdata->target_phases |= SPHASE_PENDING;
 544                                         tdata->scsi_status =
 545                                             ccb->csio.scsi_status;
 546                                 }
 547                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 548                                         tdata->target_phases |= NO_DISCONNECT;
 549
 550                                 tdata->initiator_tag = ccb->csio.tag_id;
 551                         }
 552                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 553                                 hscb->control |= ccb->csio.tag_action;
 554
 555                         ahc_setup_data(ahc, sim, &ccb->csio, scb);
 556                 }
 557                 break;
 558         }
 559         case XPT_NOTIFY_ACK:
 560         case XPT_IMMED_NOTIFY:
 561         {
 562                 struct     ahc_tmode_tstate *tstate;
 563                 struct     ahc_tmode_lstate *lstate;
 564                 cam_status status;
 565
 566                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
 567                                              &lstate, TRUE);
 568
 569                 if (status != CAM_REQ_CMP) {
 570                         ccb->ccb_h.status = status;
 571                         xpt_done(ccb);
 572                         break;
 573                 }
 574                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 575                                   sim_links.sle);
 576                 ccb->ccb_h.status = CAM_REQ_INPROG;
 577                 ahc_send_lstate_events(ahc, lstate);
 578                 break;
 579         }
 580         case XPT_EN_LUN:                /* Enable LUN as a target */
 581                 ahc_handle_en_lun(ahc, sim, ccb);
 582                 xpt_done(ccb);
 583                 break;
 584         case XPT_ABORT:                 /* Abort the specified CCB */
 585         {
 586                 ahc_abort_ccb(ahc, sim, ccb);
 587                 break;
 588         }
 589         case XPT_SET_TRAN_SETTINGS:
 590         {
 591                 struct  ahc_devinfo devinfo;
 592                 struct  ccb_trans_settings *cts;
 593                 struct  ccb_trans_settings_scsi *scsi;
 594                 struct  ccb_trans_settings_spi *spi;
 595                 struct  ahc_initiator_tinfo *tinfo;
 596                 struct  ahc_tmode_tstate *tstate;
 597                 uint16_t *discenable;
 598                 uint16_t *tagenable;
 599                 u_int   update_type;
 600
 601                 cts = &ccb->cts;
 602                 scsi = &cts->proto_specific.scsi;
 603                 spi = &cts->xport_specific.spi;
 604                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
 605                                     cts->ccb_h.target_id,
 606                                     cts->ccb_h.target_lun,
 607                                     SIM_CHANNEL(ahc, sim),
 608                                     ROLE_UNKNOWN);
 609                 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
 610                                             devinfo.our_scsiid,
 611                                             devinfo.target, &tstate);
 612                 update_type = 0;
 613                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 614                         update_type |= AHC_TRANS_GOAL;
 615                         discenable = &tstate->discenable;
 616                         tagenable = &tstate->tagenable;
 617                         tinfo->curr.protocol_version =
 618                             cts->protocol_version;
 619                         tinfo->curr.transport_version =
 620                             cts->transport_version;
 621                         tinfo->goal.protocol_version =
 622                             cts->protocol_version;
 623                         tinfo->goal.transport_version =
 624                             cts->transport_version;
 625                 } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 626                         update_type |= AHC_TRANS_USER;
 627                         discenable = &ahc->user_discenable;
 628                         tagenable = &ahc->user_tagenable;
 629                         tinfo->user.protocol_version =
 630                             cts->protocol_version;
 631                         tinfo->user.transport_version =
 632                             cts->transport_version;
 633                 } else {
 634                         ccb->ccb_h.status = CAM_REQ_INVALID;
 635                         xpt_done(ccb);
 636                         break;
 637                 }
 638
 639                 if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 640                         if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 641                                 *discenable |= devinfo.target_mask;
 642                         else
 643                                 *discenable &= ~devinfo.target_mask;
 644                 }
 645
 646                 if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 647                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 648                                 *tagenable |= devinfo.target_mask;
 649                         else
 650                                 *tagenable &= ~devinfo.target_mask;
 651                 }
 652
 653                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 654                         ahc_validate_width(ahc, /*tinfo limit*/NULL,
 655                                            &spi->bus_width, ROLE_UNKNOWN);
 656                         ahc_set_width(ahc, &devinfo, spi->bus_width,
 657                                       update_type, /*paused*/FALSE);
 658                 }
 659
 660                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 661                         if (update_type == AHC_TRANS_USER)
 662                                 spi->ppr_options = tinfo->user.ppr_options;
 663                         else
 664                                 spi->ppr_options = tinfo->goal.ppr_options;
 665                 }
 666
 667                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 668                         if (update_type == AHC_TRANS_USER)
 669                                 spi->sync_offset = tinfo->user.offset;
 670                         else
 671                                 spi->sync_offset = tinfo->goal.offset;
 672                 }
 673
 674                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 675                         if (update_type == AHC_TRANS_USER)
 676                                 spi->sync_period = tinfo->user.period;
 677                         else
 678                                 spi->sync_period = tinfo->goal.period;
 679                 }
 680
 681                 if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 682                  || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 683                         struct ahc_syncrate *syncrate;
 684                         u_int maxsync;
 685
 686                         if ((ahc->features & AHC_ULTRA2) != 0)
 687                                 maxsync = AHC_SYNCRATE_DT;
 688                         else if ((ahc->features & AHC_ULTRA) != 0)
 689                                 maxsync = AHC_SYNCRATE_ULTRA;
 690                         else
 691                                 maxsync = AHC_SYNCRATE_FAST;
 692
 693                         if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 694                                 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 695
 696                         syncrate = ahc_find_syncrate(ahc, &spi->sync_period,
 697                                                      &spi->ppr_options,
 698                                                      maxsync);
 699                         ahc_validate_offset(ahc, /*tinfo limit*/NULL,
 700                                             syncrate, &spi->sync_offset,
 701                                             spi->bus_width, ROLE_UNKNOWN);
 702
 703                         /* We use a period of 0 to represent async */
 704                         if (spi->sync_offset == 0) {
 705                                 spi->sync_period = 0;
 706                                 spi->ppr_options = 0;
 707                         }
 708
 709                         ahc_set_syncrate(ahc, &devinfo, syncrate,
 710                                          spi->sync_period, spi->sync_offset,
 711                                          spi->ppr_options, update_type,
 712                                          /*paused*/FALSE);
 713                 }
 714                 ccb->ccb_h.status = CAM_REQ_CMP;
 715                 xpt_done(ccb);
 716                 break;
 717         }
 718         case XPT_GET_TRAN_SETTINGS:
 719         /* Get default/user set transfer settings for the target */
 720         {
 721
 722                 ahc_get_tran_settings(ahc, SIM_SCSI_ID(ahc, sim),
 723                                       SIM_CHANNEL(ahc, sim), &ccb->cts);
 724                 xpt_done(ccb);
 725                 break;
 726         }
 727         case XPT_CALC_GEOMETRY:
 728         {
 729                 int extended;
 730
 731                 extended = SIM_IS_SCSIBUS_B(ahc, sim)
 732                          ? ahc->flags & AHC_EXTENDED_TRANS_B
 733                          : ahc->flags & AHC_EXTENDED_TRANS_A;
 734                 cam_calc_geometry(&ccb->ccg, extended);
 735                 xpt_done(ccb);
 736                 break;
 737         }
 738         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 739         {
 740                 int  found;
 741
 742                 found = ahc_reset_channel(ahc, SIM_CHANNEL(ahc, sim),
 743                                           /*initiate reset*/TRUE);
 744                 if (bootverbose) {
 745                         xpt_print_path(SIM_PATH(ahc, sim));
 746                         kprintf("SCSI bus reset delivered. "
 747                                "%d SCBs aborted.\n", found);
 748                 }
 749                 ccb->ccb_h.status = CAM_REQ_CMP;
 750                 xpt_done(ccb);
 751                 break;
 752         }
 753         case XPT_TERM_IO:               /* Terminate the I/O process */
 754                 /* XXX Implement */
 755                 ccb->ccb_h.status = CAM_REQ_INVALID;
 756                 xpt_done(ccb);
 757                 break;
 758         case XPT_PATH_INQ:              /* Path routing inquiry */
 759         {
 760                 struct ccb_pathinq *cpi = &ccb->cpi;
 761
 762                 cpi->version_num = 1; /* XXX??? */
 763                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 764                 if ((ahc->features & AHC_WIDE) != 0)
 765                         cpi->hba_inquiry |= PI_WIDE_16;
 766                 if ((ahc->features & AHC_TARGETMODE) != 0) {
 767                         cpi->target_sprt = PIT_PROCESSOR
 768                                          | PIT_DISCONNECT
 769                                          | PIT_TERM_IO;
 770                 } else {
 771                         cpi->target_sprt = 0;
 772                 }
 773                 cpi->hba_misc = 0;
 774                 cpi->hba_eng_cnt = 0;
 775                 cpi->max_target = (ahc->features & AHC_WIDE) ? 15 : 7;
 776                 cpi->max_lun = AHC_NUM_LUNS - 1;
 777                 if (SIM_IS_SCSIBUS_B(ahc, sim)) {
 778                         cpi->initiator_id = ahc->our_id_b;
 779                         if ((ahc->flags & AHC_RESET_BUS_B) == 0)
 780                                 cpi->hba_misc |= PIM_NOBUSRESET;
 781                 } else {
 782                         cpi->initiator_id = ahc->our_id;
 783                         if ((ahc->flags & AHC_RESET_BUS_A) == 0)
 784                                 cpi->hba_misc |= PIM_NOBUSRESET;
 785                 }
 786                 cpi->bus_id = cam_sim_bus(sim);
 787                 cpi->base_transfer_speed = 3300;
 788                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 789                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 790                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 791                 cpi->unit_number = cam_sim_unit(sim);
 792                 cpi->protocol = PROTO_SCSI;
 793                 cpi->protocol_version = SCSI_REV_2;
 794                 cpi->transport = XPORT_SPI;
 795                 cpi->transport_version = 2;
 796                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
 797                 if ((ahc->features & AHC_DT) != 0) {
 798                         cpi->transport_version = 3;
 799                         cpi->xport_specific.spi.ppr_options =
 800                             SID_SPI_CLOCK_DT_ST;
 801                 }
 802                 cpi->ccb_h.status = CAM_REQ_CMP;
 803                 xpt_done(ccb);
 804                 break;
 805         }
 806         default:
 807                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 808                 xpt_done(ccb);
 809                 break;
 810         }
 811 }
 812
 813 static void
 814 ahc_get_tran_settings(struct ahc_softc *ahc, int our_id, char channel,
 815                       struct ccb_trans_settings *cts)
 816 {
 817         struct  ahc_devinfo devinfo;
 818         struct  ccb_trans_settings_scsi *scsi;
 819         struct  ccb_trans_settings_spi *spi;
 820         struct  ahc_initiator_tinfo *targ_info;
 821         struct  ahc_tmode_tstate *tstate;
 822         struct  ahc_transinfo *tinfo;
 823
 824         scsi = &cts->proto_specific.scsi;
 825         spi = &cts->xport_specific.spi;
 826         ahc_compile_devinfo(&devinfo, our_id,
 827                             cts->ccb_h.target_id,
 828                             cts->ccb_h.target_lun,
 829                             channel, ROLE_UNKNOWN);
 830         targ_info = ahc_fetch_transinfo(ahc, devinfo.channel,
 831                                         devinfo.our_scsiid,
 832                                         devinfo.target, &tstate);
 833
 834         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 835                 tinfo = &targ_info->curr;
 836         else
 837                 tinfo = &targ_info->user;
 838
 839         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 840         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 841         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 842                 if ((ahc->user_discenable & devinfo.target_mask) != 0)
 843                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 844
 845                 if ((ahc->user_tagenable & devinfo.target_mask) != 0)
 846                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 847         } else {
 848                 if ((tstate->discenable & devinfo.target_mask) != 0)
 849                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 850
 851                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 852                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 853         }
 854         cts->protocol_version = tinfo->protocol_version;
 855         cts->transport_version = tinfo->transport_version;
 856
 857         spi->sync_period = tinfo->period;
 858         spi->sync_offset = tinfo->offset;
 859         spi->bus_width = tinfo->width;
 860         spi->ppr_options = tinfo->ppr_options;
 861
 862         cts->protocol = PROTO_SCSI;
 863         cts->transport = XPORT_SPI;
 864         spi->valid = CTS_SPI_VALID_SYNC_RATE
 865                    | CTS_SPI_VALID_SYNC_OFFSET
 866                    | CTS_SPI_VALID_BUS_WIDTH
 867                    | CTS_SPI_VALID_PPR_OPTIONS;
 868
 869         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 870                 scsi->valid = CTS_SCSI_VALID_TQ;
 871                 spi->valid |= CTS_SPI_VALID_DISC;
 872         } else {
 873                 scsi->valid = 0;
 874         }
 875
 876         cts->ccb_h.status = CAM_REQ_CMP;
 877 }
 878
 879 static void
 880 ahc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 881 {
 882         struct ahc_softc *ahc;
 883         struct cam_sim *sim;
 884
 885         sim = (struct cam_sim *)callback_arg;
 886         ahc = (struct ahc_softc *)cam_sim_softc(sim);
 887         switch (code) {
 888         case AC_LOST_DEVICE:
 889         {
 890                 struct  ahc_devinfo devinfo;
 891
 892                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
 893                                     xpt_path_target_id(path),
 894                                     xpt_path_lun_id(path),
 895                                     SIM_CHANNEL(ahc, sim),
 896                                     ROLE_UNKNOWN);
 897
 898                 /*
 899                  * Revert to async/narrow transfers
 900                  * for the next device.
 901                  */
 902                 ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
 903                               AHC_TRANS_GOAL|AHC_TRANS_CUR, /*paused*/FALSE);
 904                 ahc_set_syncrate(ahc, &devinfo, /*syncrate*/NULL,
 905                                  /*period*/0, /*offset*/0, /*ppr_options*/0,
 906                                  AHC_TRANS_GOAL|AHC_TRANS_CUR,
 907                                  /*paused*/FALSE);
 908                 break;
 909         }
 910         default:
 911                 break;
 912         }
 913 }
 914
 915 static void
 916 ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
 917                 int error)
 918 {
 919         struct  scb *scb;
 920         union   ccb *ccb;
 921         struct  ahc_softc *ahc;
 922         struct  ahc_initiator_tinfo *tinfo;
 923         struct  ahc_tmode_tstate *tstate;
 924         u_int   mask;
 925
 926         scb = (struct scb *)arg;
 927         ccb = scb->io_ctx;
 928         ahc = scb->ahc_softc;
 929
 930         if (error != 0) {
 931                 if (error == EFBIG)
 932                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
 933                 else
 934                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
 935                 if (nsegments != 0)
 936                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
 937                 ahc_free_scb(ahc, scb);
 938                 xpt_done(ccb);
 939                 return;
 940         }
 941         if (nsegments != 0) {
 942                 struct    ahc_dma_seg *sg;
 943                 bus_dma_segment_t *end_seg;
 944                 bus_dmasync_op_t op;
 945
 946                 end_seg = dm_segs + nsegments;
 947
 948                 /* Copy the segments into our SG list */
 949                 sg = scb->sg_list;
 950                 while (dm_segs < end_seg) {
 951                         uint32_t len;
 952
 953                         sg->addr = aic_htole32(dm_segs->ds_addr);
 954                         len = dm_segs->ds_len
 955                             | ((dm_segs->ds_addr >> 8) & 0x7F000000);
 956                         sg->len = aic_htole32(len);
 957                         sg++;
 958                         dm_segs++;
 959                 }
 960
 961                 /*
 962                  * Note where to find the SG entries in bus space.
 963                  * We also set the full residual flag which the
 964                  * sequencer will clear as soon as a data transfer
 965                  * occurs.
 966                  */
 967                 scb->hscb->sgptr = aic_htole32(scb->sg_list_phys|SG_FULL_RESID);
 968
 969                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 970                         op = BUS_DMASYNC_PREREAD;
 971                 else
 972                         op = BUS_DMASYNC_PREWRITE;
 973
 974                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
 975
 976                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 977                         struct target_data *tdata;
 978
 979                         tdata = &scb->hscb->shared_data.tdata;
 980                         tdata->target_phases |= DPHASE_PENDING;
 981                         /*
 982                          * CAM data direction is relative to the initiator.
 983                          */
 984                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 985                                 tdata->data_phase = P_DATAOUT;
 986                         else
 987                                 tdata->data_phase = P_DATAIN;
 988
 989                         /*
 990                          * If the transfer is of an odd length and in the
 991                          * "in" direction (scsi->HostBus), then it may
 992                          * trigger a bug in the 'WideODD' feature of
 993                          * non-Ultra2 chips.  Force the total data-length
 994                          * to be even by adding an extra, 1 byte, SG,
 995                          * element.  We do this even if we are not currently
 996                          * negotiated wide as negotiation could occur before
 997                          * this command is executed.
 998                          */
 999                         if ((ahc->bugs & AHC_TMODE_WIDEODD_BUG) != 0
1000                          && (ccb->csio.dxfer_len & 0x1) != 0
1001                          && (ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
1002
1003                                 nsegments++;
1004                                 if (nsegments > AHC_NSEG) {
1005
1006                                         aic_set_transaction_status(scb,
1007                                             CAM_REQ_TOO_BIG);
1008                                         bus_dmamap_unload(ahc->buffer_dmat,
1009                                                           scb->dmamap);
1010                                         ahc_free_scb(ahc, scb);
1011                                         xpt_done(ccb);
1012                                         return;
1013                                 }
1014                                 sg->addr = aic_htole32(ahc->dma_bug_buf);
1015                                 sg->len = aic_htole32(1);
1016                                 sg++;
1017                         }
1018                 }
1019                 sg--;
1020                 sg->len |= aic_htole32(AHC_DMA_LAST_SEG);
1021
1022                 /* Copy the first SG into the "current" data pointer area */
1023                 scb->hscb->dataptr = scb->sg_list->addr;
1024                 scb->hscb->datacnt = scb->sg_list->len;
1025         } else {
1026                 scb->hscb->sgptr = aic_htole32(SG_LIST_NULL);
1027                 scb->hscb->dataptr = 0;
1028                 scb->hscb->datacnt = 0;
1029         }
1030
1031         scb->sg_count = nsegments;
1032
1033         /*
1034          * Last time we need to check if this SCB needs to
1035          * be aborted.
1036          */
1037         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
1038                 if (nsegments != 0)
1039                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
1040                 ahc_free_scb(ahc, scb);
1041                 xpt_done(ccb);
1042                 return;
1043         }
1044
1045         tinfo = ahc_fetch_transinfo(ahc, SCSIID_CHANNEL(ahc, scb->hscb->scsiid),
1046                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1047                                     SCSIID_TARGET(ahc, scb->hscb->scsiid),
1048                                     &tstate);
1049
1050         mask = SCB_GET_TARGET_MASK(ahc, scb);
1051         scb->hscb->scsirate = tinfo->scsirate;
1052         scb->hscb->scsioffset = tinfo->curr.offset;
1053         if ((tstate->ultraenb & mask) != 0)
1054                 scb->hscb->control |= ULTRAENB;
1055
1056         if ((tstate->discenable & mask) != 0
1057          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1058                 scb->hscb->control |= DISCENB;
1059
1060         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1061          && (tinfo->goal.width != 0
1062           || tinfo->goal.offset != 0
1063           || tinfo->goal.ppr_options != 0)) {
1064                 scb->flags |= SCB_NEGOTIATE;
1065                 scb->hscb->control |= MK_MESSAGE;
1066         } else if ((tstate->auto_negotiate & mask) != 0) {
1067                 scb->flags |= SCB_AUTO_NEGOTIATE;
1068                 scb->hscb->control |= MK_MESSAGE;
1069         }
1070
1071         LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
1072
1073         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1074
1075         /*
1076          * We only allow one untagged transaction
1077          * per target in the initiator role unless
1078          * we are storing a full busy target *lun*
1079          * table in SCB space.
1080          */
1081         if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
1082          && (ahc->flags & AHC_SCB_BTT) == 0) {
1083                 struct scb_tailq *untagged_q;
1084                 int target_offset;
1085
1086                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
1087                 untagged_q = &(ahc->untagged_queues[target_offset]);
1088                 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
1089                 scb->flags |= SCB_UNTAGGEDQ;
1090                 if (TAILQ_FIRST(untagged_q) != scb) {
1091                         return;
1092                 }
1093         }
1094         scb->flags |= SCB_ACTIVE;
1095
1096         /*
1097          * Timers are disabled while recovery is in progress.
1098          */
1099         aic_scb_timer_start(scb);
1100
1101         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1102                 /* Define a mapping from our tag to the SCB. */
1103                 ahc->scb_data->scbindex[scb->hscb->tag] = scb;
1104                 ahc_pause(ahc);
1105                 if ((ahc->flags & AHC_PAGESCBS) == 0)
1106                         ahc_outb(ahc, SCBPTR, scb->hscb->tag);
1107                 ahc_outb(ahc, TARG_IMMEDIATE_SCB, scb->hscb->tag);
1108                 ahc_unpause(ahc);
1109         } else {
1110                 ahc_queue_scb(ahc, scb);
1111         }
1112 }
1113
1114 static void
1115 ahc_poll(struct cam_sim *sim)
1116 {
1117         struct ahc_softc *ahc;
1118
1119         ahc = (struct ahc_softc *)cam_sim_softc(sim);
1120         ahc_intr(ahc);
1121 }
1122
1123 static void
1124 ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
1125                struct ccb_scsiio *csio, struct scb *scb)
1126 {
1127         struct hardware_scb *hscb;
1128         struct ccb_hdr *ccb_h;
1129
1130         hscb = scb->hscb;
1131         ccb_h = &csio->ccb_h;
1132
1133         csio->resid = 0;
1134         csio->sense_resid = 0;
1135         if (ccb_h->func_code == XPT_SCSI_IO) {
1136                 hscb->cdb_len = csio->cdb_len;
1137                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1138
1139                         if (hscb->cdb_len > sizeof(hscb->cdb32)
1140                          || (ccb_h->flags & CAM_CDB_PHYS) != 0) {
1141                                 aic_set_transaction_status(scb,
1142                                                            CAM_REQ_INVALID);
1143                                 ahc_free_scb(ahc, scb);
1144                                 xpt_done((union ccb *)csio);
1145                                 return;
1146                         }
1147                         if (hscb->cdb_len > 12) {
1148                                 memcpy(hscb->cdb32,
1149                                        csio->cdb_io.cdb_ptr,
1150                                        hscb->cdb_len);
1151                                 scb->flags |= SCB_CDB32_PTR;
1152                         } else {
1153                                 memcpy(hscb->shared_data.cdb,
1154                                        csio->cdb_io.cdb_ptr,
1155                                        hscb->cdb_len);
1156                         }
1157                 } else {
1158                         if (hscb->cdb_len > 12) {
1159                                 memcpy(hscb->cdb32, csio->cdb_io.cdb_bytes,
1160                                        hscb->cdb_len);
1161                                 scb->flags |= SCB_CDB32_PTR;
1162                         } else {
1163                                 memcpy(hscb->shared_data.cdb,
1164                                        csio->cdb_io.cdb_bytes,
1165                                        hscb->cdb_len);
1166                         }
1167                 }
1168         }
1169
1170         /* Only use S/G if there is a transfer */
1171         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1172                 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
1173                         /* We've been given a pointer to a single buffer */
1174                         if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
1175                                 int error;
1176
1177                                 crit_enter();
1178                                 error = bus_dmamap_load(ahc->buffer_dmat,
1179                                                         scb->dmamap,
1180                                                         csio->data_ptr,
1181                                                         csio->dxfer_len,
1182                                                         ahc_execute_scb,
1183                                                         scb, /*flags*/0);
1184                                 if (error == EINPROGRESS) {
1185                                         /*
1186                                          * So as to maintain ordering,
1187                                          * freeze the controller queue
1188                                          * until our mapping is
1189                                          * returned.
1190                                          */
1191                                         xpt_freeze_simq(sim,
1192                                                         /*count*/1);
1193                                         scb->io_ctx->ccb_h.status |=
1194                                             CAM_RELEASE_SIMQ;
1195                                 }
1196                                 crit_exit();
1197                         } else {
1198                                 struct bus_dma_segment seg;
1199
1200                                 /* Pointer to physical buffer */
1201                                 if (csio->dxfer_len > AHC_MAXTRANSFER_SIZE)
1202                                         panic("ahc_setup_data - Transfer size "
1203                                               "larger than can device max");
1204
1205                                 seg.ds_addr =
1206                                     (bus_addr_t)(vm_offset_t)csio->data_ptr;
1207                                 seg.ds_len = csio->dxfer_len;
1208                                 ahc_execute_scb(scb, &seg, 1, 0);
1209                         }
1210                 } else {
1211                         struct bus_dma_segment *segs;
1212
1213                         if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
1214                                 panic("ahc_setup_data - Physical segment "
1215                                       "pointers unsupported");
1216
1217                         if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
1218                                 panic("ahc_setup_data - Virtual segment "
1219                                       "addresses unsupported");
1220
1221                         /* Just use the segments provided */
1222                         segs = (struct bus_dma_segment *)csio->data_ptr;
1223                         ahc_execute_scb(scb, segs, csio->sglist_cnt, 0);
1224                 }
1225         } else {
1226                 ahc_execute_scb(scb, NULL, 0, 0);
1227         }
1228 }
1229
1230 static void
1231 ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb)
1232 {
1233         union ccb *abort_ccb;
1234
1235         abort_ccb = ccb->cab.abort_ccb;
1236         switch (abort_ccb->ccb_h.func_code) {
1237         case XPT_ACCEPT_TARGET_IO:
1238         case XPT_IMMED_NOTIFY:
1239         case XPT_CONT_TARGET_IO:
1240         {
1241                 struct ahc_tmode_tstate *tstate;
1242                 struct ahc_tmode_lstate *lstate;
1243                 struct ccb_hdr_slist *list;
1244                 cam_status status;
1245
1246                 status = ahc_find_tmode_devs(ahc, sim, abort_ccb, &tstate,
1247                                              &lstate, TRUE);
1248
1249                 if (status != CAM_REQ_CMP) {
1250                         ccb->ccb_h.status = status;
1251                         break;
1252                 }
1253
1254                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1255                         list = &lstate->accept_tios;
1256                 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
1257                         list = &lstate->immed_notifies;
1258                 else
1259                         list = NULL;
1260
1261                 if (list != NULL) {
1262                         struct ccb_hdr *curelm;
1263                         int found;
1264
1265                         curelm = SLIST_FIRST(list);
1266                         found = 0;
1267                         if (curelm == &abort_ccb->ccb_h) {
1268                                 found = 1;
1269                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1270                         } else {
1271                                 while(curelm != NULL) {
1272                                         struct ccb_hdr *nextelm;
1273
1274                                         nextelm =
1275                                             SLIST_NEXT(curelm, sim_links.sle);
1276
1277                                         if (nextelm == &abort_ccb->ccb_h) {
1278                                                 found = 1;
1279                                                 SLIST_NEXT(curelm,
1280                                                            sim_links.sle) =
1281                                                     SLIST_NEXT(nextelm,
1282                                                                sim_links.sle);
1283                                                 break;
1284                                         }
1285                                         curelm = nextelm;
1286                                 }
1287                         }
1288
1289                         if (found) {
1290                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1291                                 xpt_done(abort_ccb);
1292                                 ccb->ccb_h.status = CAM_REQ_CMP;
1293                         } else {
1294                                 xpt_print_path(abort_ccb->ccb_h.path);
1295                                 kprintf("Not found\n");
1296                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1297                         }
1298                         break;
1299                 }
1300                 /* FALLTHROUGH */
1301         }
1302         case XPT_SCSI_IO:
1303                 /* XXX Fully implement the hard ones */
1304                 ccb->ccb_h.status = CAM_UA_ABORT;
1305                 break;
1306         default:
1307                 ccb->ccb_h.status = CAM_REQ_INVALID;
1308                 break;
1309         }
1310         xpt_done(ccb);
1311 }
1312
1313 void
1314 ahc_send_async(struct ahc_softc *ahc, char channel, u_int target,
1315                 u_int lun, ac_code code, void *opt_arg)
1316 {
1317         struct  ccb_trans_settings cts;
1318         struct cam_path *path;
1319         void *arg;
1320         int error;
1321
1322         arg = NULL;
1323         error = ahc_create_path(ahc, channel, target, lun, &path);
1324
1325         if (error != CAM_REQ_CMP)
1326                 return;
1327
1328         switch (code) {
1329         case AC_TRANSFER_NEG:
1330         {
1331                 struct  ccb_trans_settings_scsi *scsi;
1332
1333                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1334                 scsi = &cts.proto_specific.scsi;
1335                 cts.ccb_h.path = path;
1336                 cts.ccb_h.target_id = target;
1337                 cts.ccb_h.target_lun = lun;
1338                 ahc_get_tran_settings(ahc, channel == 'A' ? ahc->our_id
1339                                                           : ahc->our_id_b,
1340                                       channel, &cts);
1341                 arg = &cts;
1342                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1343                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1344                 if (opt_arg == NULL)
1345                         break;
1346                 if (*((ahc_queue_alg *)opt_arg) == AHC_QUEUE_TAGGED)
1347                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1348                 scsi->valid |= CTS_SCSI_VALID_TQ;
1349                 break;
1350         }
1351         case AC_SENT_BDR:
1352         case AC_BUS_RESET:
1353                 break;
1354         default:
1355                 panic("ahc_send_async: Unexpected async event");
1356         }
1357         xpt_async(code, path, arg);
1358         xpt_free_path(path);
1359 }
1360
1361 void
1362 ahc_platform_set_tags(struct ahc_softc *ahc,
1363                       struct ahc_devinfo *devinfo, int enable)
1364 {
1365 }
1366
1367 int
1368 ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
1369 {
1370         ahc->platform_data = kmalloc(sizeof(struct ahc_platform_data), M_DEVBUF,
1371                                     M_INTWAIT | M_ZERO);
1372         return (0);
1373 }
1374
1375 void
1376 ahc_platform_free(struct ahc_softc *ahc)
1377 {
1378         struct ahc_platform_data *pdata;
1379
1380         pdata = ahc->platform_data;
1381         if (pdata != NULL) {
1382                 if (pdata->regs != NULL)
1383                         bus_release_resource(ahc->dev_softc,
1384                                              pdata->regs_res_type,
1385                                              pdata->regs_res_id,
1386                                              pdata->regs);
1387
1388                 if (pdata->irq != NULL)
1389                         bus_release_resource(ahc->dev_softc,
1390                                              pdata->irq_res_type,
1391                                              0, pdata->irq);
1392
1393                 if (pdata->sim_b != NULL) {
1394                         xpt_async(AC_LOST_DEVICE, pdata->path_b, NULL);
1395                         xpt_free_path(pdata->path_b);
1396                         xpt_bus_deregister(cam_sim_path(pdata->sim_b));
1397                         cam_sim_free(pdata->sim_b);
1398                 }
1399                 if (pdata->sim != NULL) {
1400                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1401                         xpt_free_path(pdata->path);
1402                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1403                         cam_sim_free(pdata->sim);
1404                 }
1405                 if (pdata->eh != NULL)
1406                         EVENTHANDLER_DEREGISTER(shutdown_post_sync, pdata->eh);
1407                 kfree(ahc->platform_data, M_DEVBUF);
1408         }
1409 }
1410
1411 int
1412 ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc)
1413 {
1414         /* We don't sort softcs under FreeBSD so report equal always */
1415         return (0);
1416 }
1417
1418 int
1419 ahc_detach(device_t dev)
1420 {
1421         struct ahc_softc *ahc;
1422
1423         device_printf(dev, "detaching device\n");
1424         ahc = device_get_softc(dev);
1425         ahc_lock(ahc);
1426         TAILQ_REMOVE(&ahc_tailq, ahc, links);
1427         ahc_intr_enable(ahc, FALSE);
1428         bus_teardown_intr(dev, ahc->platform_data->irq, ahc->platform_data->ih);
1429         ahc_unlock(ahc);
1430         ahc_free(ahc);
1431         return (0);
1432 }
1433
1434 #if 0
1435 static void
1436 ahc_dump_targcmd(struct target_cmd *cmd)
1437 {
1438         uint8_t *byte;
1439         uint8_t *last_byte;
1440         int i;
1441
1442         byte = &cmd->initiator_channel;
1443         /* Debugging info for received commands */
1444         last_byte = &cmd[1].initiator_channel;
1445
1446         i = 0;
1447         while (byte < last_byte) {
1448                 if (i == 0)
1449                         kprintf("\t");
1450                 kprintf("%#x", *byte++);
1451                 i++;
1452                 if (i == 8) {
1453                         kprintf("\n");
1454                         i = 0;
1455                 } else {
1456                         kprintf(", ");
1457                 }
1458         }
1459 }
1460 #endif
1461
1462 static int
1463 ahc_modevent(module_t mod, int type, void *data)
1464 {
1465         /* XXX Deal with busy status on unload. */
1466         /* XXX Deal with unknown events */
1467         return 0;
1468 }
1469
1470 static moduledata_t ahc_mod = {
1471         "ahc",
1472         ahc_modevent,
1473         NULL
1474 };
1475
1476 DECLARE_MODULE(ahc, ahc_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1477 MODULE_DEPEND(ahc, cam, 1, 1, 1);
1478 MODULE_VERSION(ahc, 1);