sys/dev/aic7xxx/aic79xx_osm.c

   1 /*-
   2  * Bus independent FreeBSD shim for the aic79xx based Adaptec SCSI controllers
   3  *
   4  * Copyright (c) 1994-2002, 2004 Justin T. Gibbs.
   5  * Copyright (c) 2001-2002 Adaptec Inc.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions, and the following disclaimer,
  13  *    without modification.
  14  * 2. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * Alternatively, this software may be distributed under the terms of the
  18  * GNU Public License ("GPL").
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.c#35 $
  33  */
  34
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 #include <dev/aic7xxx/aic79xx_osm.h>
  39 #include <dev/aic7xxx/aic79xx_inline.h>
  40
  41 #include <sys/kthread.h>
  42
  43 #include "opt_ddb.h"
  44 #ifdef DDB
  45 #include <ddb/ddb.h>
  46 #endif
  47
  48 #ifndef AHD_TMODE_ENABLE
  49 #define AHD_TMODE_ENABLE 0
  50 #endif
  51
  52 #include <dev/aic7xxx/aic_osm_lib.c>
  53
  54 #define ccb_scb_ptr spriv_ptr0
  55
  56 #if 0
  57 static void     ahd_dump_targcmd(struct target_cmd *cmd);
  58 #endif
  59 static int      ahd_modevent(module_t mod, int type, void *data);
  60 static void     ahd_action(struct cam_sim *sim, union ccb *ccb);
  61 static void     ahd_set_tran_settings(struct ahd_softc *ahd,
  62                                       int our_id, char channel,
  63                                       struct ccb_trans_settings *cts);
  64 static void     ahd_get_tran_settings(struct ahd_softc *ahd,
  65                                       int our_id, char channel,
  66                                       struct ccb_trans_settings *cts);
  67 static void     ahd_async(void *callback_arg, uint32_t code,
  68                           struct cam_path *path, void *arg);
  69 static void     ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs,
  70                                 int nsegments, int error);
  71 static void     ahd_poll(struct cam_sim *sim);
  72 static void     ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
  73                                struct ccb_scsiio *csio, struct scb *scb);
  74 static void     ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim,
  75                               union ccb *ccb);
  76 static int      ahd_create_path(struct ahd_softc *ahd,
  77                                 char channel, u_int target, u_int lun,
  78                                 struct cam_path **path);
  79
  80 static const char *ahd_sysctl_node_elements[] = {
  81         "root",
  82         "summary",
  83         "debug"
  84 };
  85
  86 #ifndef NO_SYSCTL_DESCR
  87 static const char *ahd_sysctl_node_descriptions[] = {
  88         "root error collection for aic79xx controllers",
  89         "summary collection for aic79xx controllers",
  90         "debug collection for aic79xx controllers"
  91 };
  92 #endif
  93
  94 static const char *ahd_sysctl_errors_elements[] = {
  95         "Cerrors",
  96         "Uerrors",
  97         "Ferrors"
  98 };
  99
 100 #ifndef NO_SYSCTL_DESCR
 101 static const char *ahd_sysctl_errors_descriptions[] = {
 102         "Correctable errors",
 103         "Uncorrectable errors",
 104         "Fatal errors"
 105 };
 106 #endif
 107
 108 static int
 109 ahd_set_debugcounters(SYSCTL_HANDLER_ARGS)
 110 {
 111         struct ahd_softc *sc;
 112         int error, tmpv;
 113
 114         tmpv = 0;
 115         sc = arg1;
 116         error = sysctl_handle_int(oidp, &tmpv, 0, req);
 117         if (error != 0 || req->newptr == NULL)
 118                 return (error);
 119         if (tmpv < 0 || tmpv >= AHD_ERRORS_NUMBER)
 120                 return (EINVAL);
 121         sc->summerr[arg2] = tmpv;
 122         return (0);
 123 }
 124
 125 static int
 126 ahd_clear_allcounters(SYSCTL_HANDLER_ARGS)
 127 {
 128         struct ahd_softc *sc;
 129         int error, tmpv;
 130
 131         tmpv = 0;
 132         sc = arg1;
 133         error = sysctl_handle_int(oidp, &tmpv, 0, req);
 134         if (error != 0 || req->newptr == NULL)
 135                 return (error);
 136         if (tmpv != 0)
 137                 bzero(sc->summerr, sizeof(sc->summerr));
 138         return (0);
 139 }
 140
 141 static int
 142 ahd_create_path(struct ahd_softc *ahd, char channel, u_int target,
 143                 u_int lun, struct cam_path **path)
 144 {
 145         path_id_t path_id;
 146
 147         path_id = cam_sim_path(ahd->platform_data->sim);
 148         return (xpt_create_path(path, /*periph*/NULL,
 149                                 path_id, target, lun));
 150 }
 151
 152 void
 153 ahd_sysctl(struct ahd_softc *ahd)
 154 {
 155         u_int i;
 156
 157         for (i = 0; i < AHD_SYSCTL_NUMBER; i++)
 158                 sysctl_ctx_init(&ahd->sysctl_ctx[i]);
 159
 160         ahd->sysctl_tree[AHD_SYSCTL_ROOT] =
 161             SYSCTL_ADD_NODE(&ahd->sysctl_ctx[AHD_SYSCTL_ROOT],
 162                             SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
 163                             device_get_nameunit(ahd->dev_softc), CTLFLAG_RD, 0,
 164                             ahd_sysctl_node_descriptions[AHD_SYSCTL_ROOT]);
 165             SYSCTL_ADD_PROC(&ahd->sysctl_ctx[AHD_SYSCTL_ROOT],
 166                             SYSCTL_CHILDREN(ahd->sysctl_tree[AHD_SYSCTL_ROOT]),
 167                             OID_AUTO, "clear", CTLTYPE_UINT | CTLFLAG_RW, ahd,
 168                             0, ahd_clear_allcounters, "IU",
 169                             "Clear all counters");
 170
 171         for (i = AHD_SYSCTL_SUMMARY; i < AHD_SYSCTL_NUMBER; i++)
 172                 ahd->sysctl_tree[i] =
 173                     SYSCTL_ADD_NODE(&ahd->sysctl_ctx[i],
 174                                     SYSCTL_CHILDREN(ahd->sysctl_tree[AHD_SYSCTL_ROOT]),
 175                                     OID_AUTO, ahd_sysctl_node_elements[i],
 176                                     CTLFLAG_RD, 0,
 177                                     ahd_sysctl_node_descriptions[i]);
 178
 179         for (i = AHD_ERRORS_CORRECTABLE; i < AHD_ERRORS_NUMBER; i++) {
 180                 SYSCTL_ADD_UINT(&ahd->sysctl_ctx[AHD_SYSCTL_SUMMARY],
 181                                 SYSCTL_CHILDREN(ahd->sysctl_tree[AHD_SYSCTL_SUMMARY]),
 182                                 OID_AUTO, ahd_sysctl_errors_elements[i],
 183                                 CTLFLAG_RD, &ahd->summerr[i], i,
 184                                 ahd_sysctl_errors_descriptions[i]);
 185                 SYSCTL_ADD_PROC(&ahd->sysctl_ctx[AHD_SYSCTL_DEBUG],
 186                                 SYSCTL_CHILDREN(ahd->sysctl_tree[AHD_SYSCTL_DEBUG]),
 187                                 OID_AUTO, ahd_sysctl_errors_elements[i],
 188                                 CTLFLAG_RW | CTLTYPE_UINT, ahd, i,
 189                                 ahd_set_debugcounters, "IU",
 190                                 ahd_sysctl_errors_descriptions[i]);
 191         }
 192 }
 193
 194 int
 195 ahd_map_int(struct ahd_softc *ahd)
 196 {
 197         int error;
 198
 199         /* Hook up our interrupt handler */
 200         error = bus_setup_intr(ahd->dev_softc, ahd->platform_data->irq,
 201                                INTR_TYPE_CAM|INTR_MPSAFE, NULL,
 202                                ahd_platform_intr, ahd, &ahd->platform_data->ih);
 203         if (error != 0)
 204                 device_printf(ahd->dev_softc, "bus_setup_intr() failed: %d\n",
 205                               error);
 206         return (error);
 207 }
 208
 209 /*
 210  * Attach all the sub-devices we can find
 211  */
 212 int
 213 ahd_attach(struct ahd_softc *ahd)
 214 {
 215         char   ahd_info[256];
 216         struct ccb_setasync csa;
 217         struct cam_devq *devq;
 218         struct cam_sim *sim;
 219         struct cam_path *path;
 220         int count;
 221
 222         count = 0;
 223         devq = NULL;
 224         sim = NULL;
 225         path = NULL;
 226
 227         /*
 228          * Create a thread to perform all recovery.
 229          */
 230         if (ahd_spawn_recovery_thread(ahd) != 0)
 231                 goto fail;
 232
 233         ahd_controller_info(ahd, ahd_info);
 234         printf("%s\n", ahd_info);
 235         ahd_lock(ahd);
 236
 237         /*
 238          * Create the device queue for our SIM(s).
 239          */
 240         devq = cam_simq_alloc(AHD_MAX_QUEUE);
 241         if (devq == NULL)
 242                 goto fail;
 243
 244         /*
 245          * Construct our SIM entry
 246          */
 247         sim = cam_sim_alloc(ahd_action, ahd_poll, "ahd", ahd,
 248                             device_get_unit(ahd->dev_softc),
 249                             &ahd->platform_data->mtx, 1, /*XXX*/256, devq);
 250         if (sim == NULL) {
 251                 cam_simq_free(devq);
 252                 goto fail;
 253         }
 254
 255         if (xpt_bus_register(sim, ahd->dev_softc, /*bus_id*/0) != CAM_SUCCESS) {
 256                 cam_sim_free(sim, /*free_devq*/TRUE);
 257                 sim = NULL;
 258                 goto fail;
 259         }
 260
 261         if (xpt_create_path(&path, /*periph*/NULL,
 262                             cam_sim_path(sim), CAM_TARGET_WILDCARD,
 263                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 264                 xpt_bus_deregister(cam_sim_path(sim));
 265                 cam_sim_free(sim, /*free_devq*/TRUE);
 266                 sim = NULL;
 267                 goto fail;
 268         }
 269
 270         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 271         csa.ccb_h.func_code = XPT_SASYNC_CB;
 272         csa.event_enable = AC_LOST_DEVICE;
 273         csa.callback = ahd_async;
 274         csa.callback_arg = sim;
 275         xpt_action((union ccb *)&csa);
 276         count++;
 277
 278 fail:
 279         ahd->platform_data->sim = sim;
 280         ahd->platform_data->path = path;
 281         ahd_unlock(ahd);
 282         if (count != 0) {
 283                 /* We have to wait until after any system dumps... */
 284                 ahd->platform_data->eh =
 285                     EVENTHANDLER_REGISTER(shutdown_final, ahd_shutdown,
 286                                           ahd, SHUTDOWN_PRI_DEFAULT);
 287                 ahd_intr_enable(ahd, TRUE);
 288         }
 289
 290
 291         return (count);
 292 }
 293
 294 /*
 295  * Catch an interrupt from the adapter
 296  */
 297 void
 298 ahd_platform_intr(void *arg)
 299 {
 300         struct  ahd_softc *ahd;
 301
 302         ahd = (struct ahd_softc *)arg;
 303         ahd_lock(ahd);
 304         ahd_intr(ahd);
 305         ahd_unlock(ahd);
 306 }
 307
 308 /*
 309  * We have an scb which has been processed by the
 310  * adaptor, now we look to see how the operation
 311  * went.
 312  */
 313 void
 314 ahd_done(struct ahd_softc *ahd, struct scb *scb)
 315 {
 316         union ccb *ccb;
 317
 318         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
 319                   ("ahd_done - scb %d\n", SCB_GET_TAG(scb)));
 320
 321         ccb = scb->io_ctx;
 322         LIST_REMOVE(scb, pending_links);
 323         if ((scb->flags & SCB_TIMEDOUT) != 0)
 324                 LIST_REMOVE(scb, timedout_links);
 325
 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(ahd->buffer_dmat, scb->dmamap, op);
 336                 bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
 337         }
 338
 339 #ifdef AHD_TARGET_MODE
 340         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 341                 struct cam_path *ccb_path;
 342
 343                 /*
 344                  * If we have finally disconnected, clean up our
 345                  * pending device state.
 346                  * XXX - There may be error states that cause where
 347                  *       we will remain connected.
 348                  */
 349                 ccb_path = ccb->ccb_h.path;
 350                 if (ahd->pending_device != NULL
 351                  && xpt_path_comp(ahd->pending_device->path, ccb_path) == 0) {
 352
 353                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 354                                 ahd->pending_device = NULL;
 355                         } else {
 356                                 xpt_print_path(ccb->ccb_h.path);
 357                                 printf("Still disconnected\n");
 358                                 ahd_freeze_ccb(ccb);
 359                         }
 360                 }
 361
 362                 if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
 363                         ccb->ccb_h.status |= CAM_REQ_CMP;
 364                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 365                 ahd_free_scb(ahd, scb);
 366                 xpt_done(ccb);
 367                 return;
 368         }
 369 #endif
 370
 371         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
 372                 struct  scb *list_scb;
 373
 374                 ahd->scb_data.recovery_scbs--;
 375
 376                 if (aic_get_transaction_status(scb) == CAM_BDR_SENT
 377                  || aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
 378                         aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
 379
 380                 if (ahd->scb_data.recovery_scbs == 0) {
 381                         /*
 382                          * All recovery actions have completed successfully,
 383                          * so reinstate the timeouts for all other pending
 384                          * commands.
 385                          */
 386                         LIST_FOREACH(list_scb,
 387                                      &ahd->pending_scbs, pending_links) {
 388
 389                                 aic_scb_timer_reset(list_scb,
 390                                                     aic_get_timeout(scb));
 391                         }
 392
 393                         ahd_print_path(ahd, scb);
 394                         printf("no longer in timeout, status = %x\n",
 395                                ccb->ccb_h.status);
 396                 }
 397         }
 398
 399         /* Don't clobber any existing error state */
 400         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
 401                 ccb->ccb_h.status |= CAM_REQ_CMP;
 402         } else if ((scb->flags & SCB_SENSE) != 0) {
 403                 /*
 404                  * We performed autosense retrieval.
 405                  *
 406                  * Zero any sense not transferred by the
 407                  * device.  The SCSI spec mandates that any
 408                  * untransfered data should be assumed to be
 409                  * zero.  Complete the 'bounce' of sense information
 410                  * through buffers accessible via bus-space by
 411                  * copying it into the clients csio.
 412                  */
 413                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 414                 memcpy(&ccb->csio.sense_data,
 415                        ahd_get_sense_buf(ahd, scb),
 416 /* XXX What size do we want to use??? */
 417                         sizeof(ccb->csio.sense_data)
 418                        - ccb->csio.sense_resid);
 419                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 420         } else if ((scb->flags & SCB_PKT_SENSE) != 0) {
 421                 struct scsi_status_iu_header *siu;
 422                 u_int sense_len;
 423
 424                 /*
 425                  * Copy only the sense data into the provided buffer.
 426                  */
 427                 siu = (struct scsi_status_iu_header *)scb->sense_data;
 428                 sense_len = MIN(scsi_4btoul(siu->sense_length),
 429                                 sizeof(ccb->csio.sense_data));
 430                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 431                 memcpy(&ccb->csio.sense_data,
 432                        ahd_get_sense_buf(ahd, scb) + SIU_SENSE_OFFSET(siu),
 433                        sense_len);
 434 #ifdef AHD_DEBUG
 435                 if ((ahd_debug & AHD_SHOW_SENSE) != 0) {
 436                         uint8_t *sense_data = (uint8_t *)&ccb->csio.sense_data;
 437                         u_int i;
 438
 439                         printf("Copied %d bytes of sense data offset %d:",
 440                                sense_len, SIU_SENSE_OFFSET(siu));
 441                         for (i = 0; i < sense_len; i++)
 442                                 printf(" 0x%x", *sense_data++);
 443                         printf("\n");
 444                 }
 445 #endif
 446                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 447         }
 448         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 449         ahd_free_scb(ahd, scb);
 450         xpt_done(ccb);
 451 }
 452
 453 static void
 454 ahd_action(struct cam_sim *sim, union ccb *ccb)
 455 {
 456         struct  ahd_softc *ahd;
 457 #ifdef AHD_TARGET_MODE
 458         struct  ahd_tmode_lstate *lstate;
 459 #endif
 460         u_int   target_id;
 461         u_int   our_id;
 462
 463         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahd_action\n"));
 464
 465         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 466
 467         target_id = ccb->ccb_h.target_id;
 468         our_id = SIM_SCSI_ID(ahd, sim);
 469
 470         switch (ccb->ccb_h.func_code) {
 471         /* Common cases first */
 472 #ifdef AHD_TARGET_MODE
 473         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 474         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 475         {
 476                 struct     ahd_tmode_tstate *tstate;
 477                 cam_status status;
 478
 479                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 480                                              &lstate, TRUE);
 481
 482                 if (status != CAM_REQ_CMP) {
 483                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 484                                 /* Response from the black hole device */
 485                                 tstate = NULL;
 486                                 lstate = ahd->black_hole;
 487                         } else {
 488                                 ccb->ccb_h.status = status;
 489                                 xpt_done(ccb);
 490                                 break;
 491                         }
 492                 }
 493                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 494
 495                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 496                                           sim_links.sle);
 497                         ccb->ccb_h.status = CAM_REQ_INPROG;
 498                         if ((ahd->flags & AHD_TQINFIFO_BLOCKED) != 0)
 499                                 ahd_run_tqinfifo(ahd, /*paused*/FALSE);
 500                         break;
 501                 }
 502
 503                 /*
 504                  * The target_id represents the target we attempt to
 505                  * select.  In target mode, this is the initiator of
 506                  * the original command.
 507                  */
 508                 our_id = target_id;
 509                 target_id = ccb->csio.init_id;
 510                 /* FALLTHROUGH */
 511         }
 512 #endif
 513         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 514         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 515         {
 516                 struct  scb *scb;
 517                 struct  hardware_scb *hscb;
 518                 struct  ahd_initiator_tinfo *tinfo;
 519                 struct  ahd_tmode_tstate *tstate;
 520                 u_int   col_idx;
 521
 522                 if ((ahd->flags & AHD_INITIATORROLE) == 0
 523                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 524                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 525                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 526                         xpt_done(ccb);
 527                         return;
 528                 }
 529
 530                 /*
 531                  * get an scb to use.
 532                  */
 533                 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
 534                                             target_id, &tstate);
 535                 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
 536                  || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
 537                  || ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 538                         col_idx = AHD_NEVER_COL_IDX;
 539                 } else {
 540                         col_idx = AHD_BUILD_COL_IDX(target_id,
 541                                                     ccb->ccb_h.target_lun);
 542                 }
 543                 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
 544
 545                         xpt_freeze_simq(sim, /*count*/1);
 546                         ahd->flags |= AHD_RESOURCE_SHORTAGE;
 547                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 548                         xpt_done(ccb);
 549                         return;
 550                 }
 551
 552                 hscb = scb->hscb;
 553
 554                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 555                           ("start scb(%p)\n", scb));
 556                 scb->io_ctx = ccb;
 557                 /*
 558                  * So we can find the SCB when an abort is requested
 559                  */
 560                 ccb->ccb_h.ccb_scb_ptr = scb;
 561
 562                 /*
 563                  * Put all the arguments for the xfer in the scb
 564                  */
 565                 hscb->control = 0;
 566                 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id);
 567                 hscb->lun = ccb->ccb_h.target_lun;
 568                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 569                         hscb->cdb_len = 0;
 570                         scb->flags |= SCB_DEVICE_RESET;
 571                         hscb->control |= MK_MESSAGE;
 572                         hscb->task_management = SIU_TASKMGMT_LUN_RESET;
 573                         ahd_execute_scb(scb, NULL, 0, 0);
 574                 } else {
 575 #ifdef AHD_TARGET_MODE
 576                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 577                                 struct target_data *tdata;
 578
 579                                 tdata = &hscb->shared_data.tdata;
 580                                 if (ahd->pending_device == lstate)
 581                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 582                                 hscb->control |= TARGET_SCB;
 583                                 tdata->target_phases = 0;
 584                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 585                                         tdata->target_phases |= SPHASE_PENDING;
 586                                         tdata->scsi_status =
 587                                             ccb->csio.scsi_status;
 588                                 }
 589                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 590                                         tdata->target_phases |= NO_DISCONNECT;
 591
 592                                 tdata->initiator_tag =
 593                                     ahd_htole16(ccb->csio.tag_id);
 594                         }
 595 #endif
 596                         hscb->task_management = 0;
 597                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 598                                 hscb->control |= ccb->csio.tag_action;
 599
 600                         ahd_setup_data(ahd, sim, &ccb->csio, scb);
 601                 }
 602                 break;
 603         }
 604 #ifdef AHD_TARGET_MODE
 605         case XPT_NOTIFY_ACKNOWLEDGE:
 606         case XPT_IMMEDIATE_NOTIFY:
 607         {
 608                 struct     ahd_tmode_tstate *tstate;
 609                 struct     ahd_tmode_lstate *lstate;
 610                 cam_status status;
 611
 612                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 613                                              &lstate, TRUE);
 614
 615                 if (status != CAM_REQ_CMP) {
 616                         ccb->ccb_h.status = status;
 617                         xpt_done(ccb);
 618                         break;
 619                 }
 620                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 621                                   sim_links.sle);
 622                 ccb->ccb_h.status = CAM_REQ_INPROG;
 623                 ahd_send_lstate_events(ahd, lstate);
 624                 break;
 625         }
 626         case XPT_EN_LUN:                /* Enable LUN as a target */
 627                 ahd_handle_en_lun(ahd, sim, ccb);
 628                 xpt_done(ccb);
 629                 break;
 630 #endif
 631         case XPT_ABORT:                 /* Abort the specified CCB */
 632         {
 633                 ahd_abort_ccb(ahd, sim, ccb);
 634                 break;
 635         }
 636         case XPT_SET_TRAN_SETTINGS:
 637         {
 638                 ahd_set_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 639                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 640                 xpt_done(ccb);
 641                 break;
 642         }
 643         case XPT_GET_TRAN_SETTINGS:
 644         /* Get default/user set transfer settings for the target */
 645         {
 646                 ahd_get_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 647                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 648                 xpt_done(ccb);
 649                 break;
 650         }
 651         case XPT_CALC_GEOMETRY:
 652         {
 653                 aic_calc_geometry(&ccb->ccg, ahd->flags & AHD_EXTENDED_TRANS_A);
 654                 xpt_done(ccb);
 655                 break;
 656         }
 657         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 658         {
 659                 int  found;
 660
 661                 found = ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
 662                                           /*initiate reset*/TRUE);
 663                 if (bootverbose) {
 664                         xpt_print_path(SIM_PATH(ahd, sim));
 665                         printf("SCSI bus reset delivered. "
 666                                "%d SCBs aborted.\n", found);
 667                 }
 668                 ccb->ccb_h.status = CAM_REQ_CMP;
 669                 xpt_done(ccb);
 670                 break;
 671         }
 672         case XPT_TERM_IO:               /* Terminate the I/O process */
 673                 /* XXX Implement */
 674                 ccb->ccb_h.status = CAM_REQ_INVALID;
 675                 xpt_done(ccb);
 676                 break;
 677         case XPT_PATH_INQ:              /* Path routing inquiry */
 678         {
 679                 struct ccb_pathinq *cpi = &ccb->cpi;
 680
 681                 cpi->version_num = 1; /* XXX??? */
 682                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 683                 if ((ahd->features & AHD_WIDE) != 0)
 684                         cpi->hba_inquiry |= PI_WIDE_16;
 685                 if ((ahd->features & AHD_TARGETMODE) != 0) {
 686                         cpi->target_sprt = PIT_PROCESSOR
 687                                          | PIT_DISCONNECT
 688                                          | PIT_TERM_IO;
 689                 } else {
 690                         cpi->target_sprt = 0;
 691                 }
 692                 cpi->hba_misc = 0;
 693                 cpi->hba_eng_cnt = 0;
 694                 cpi->max_target = (ahd->features & AHD_WIDE) ? 15 : 7;
 695                 cpi->max_lun = AHD_NUM_LUNS_NONPKT - 1;
 696                 cpi->initiator_id = ahd->our_id;
 697                 if ((ahd->flags & AHD_RESET_BUS_A) == 0) {
 698                         cpi->hba_misc |= PIM_NOBUSRESET;
 699                 }
 700                 cpi->bus_id = cam_sim_bus(sim);
 701                 cpi->base_transfer_speed = 3300;
 702                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 703                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 704                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 705                 cpi->unit_number = cam_sim_unit(sim);
 706                 cpi->protocol = PROTO_SCSI;
 707                 cpi->protocol_version = SCSI_REV_2;
 708                 cpi->transport = XPORT_SPI;
 709                 cpi->transport_version = 4;
 710                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST
 711                                                     | SID_SPI_IUS
 712                                                     | SID_SPI_QAS;
 713                 cpi->ccb_h.status = CAM_REQ_CMP;
 714                 xpt_done(ccb);
 715                 break;
 716         }
 717         default:
 718                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 719                 xpt_done(ccb);
 720                 break;
 721         }
 722 }
 723
 724
 725 static void
 726 ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 727                       struct ccb_trans_settings *cts)
 728 {
 729         struct    ahd_devinfo devinfo;
 730         struct    ccb_trans_settings_scsi *scsi;
 731         struct    ccb_trans_settings_spi *spi;
 732         struct    ahd_initiator_tinfo *tinfo;
 733         struct    ahd_tmode_tstate *tstate;
 734         uint16_t *discenable;
 735         uint16_t *tagenable;
 736         u_int     update_type;
 737
 738         scsi = &cts->proto_specific.scsi;
 739         spi = &cts->xport_specific.spi;
 740         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 741                             cts->ccb_h.target_id,
 742                             cts->ccb_h.target_lun,
 743                             SIM_CHANNEL(ahd, sim),
 744                             ROLE_UNKNOWN);
 745         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
 746                                     devinfo.our_scsiid,
 747                                     devinfo.target, &tstate);
 748         update_type = 0;
 749         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 750                 update_type |= AHD_TRANS_GOAL;
 751                 discenable = &tstate->discenable;
 752                 tagenable = &tstate->tagenable;
 753                 tinfo->curr.protocol_version = cts->protocol_version;
 754                 tinfo->curr.transport_version = cts->transport_version;
 755                 tinfo->goal.protocol_version = cts->protocol_version;
 756                 tinfo->goal.transport_version = cts->transport_version;
 757         } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 758                 update_type |= AHD_TRANS_USER;
 759                 discenable = &ahd->user_discenable;
 760                 tagenable = &ahd->user_tagenable;
 761                 tinfo->user.protocol_version = cts->protocol_version;
 762                 tinfo->user.transport_version = cts->transport_version;
 763         } else {
 764                 cts->ccb_h.status = CAM_REQ_INVALID;
 765                 return;
 766         }
 767
 768         if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 769                 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 770                         *discenable |= devinfo.target_mask;
 771                 else
 772                         *discenable &= ~devinfo.target_mask;
 773         }
 774
 775         if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 776                 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 777                         *tagenable |= devinfo.target_mask;
 778                 else
 779                         *tagenable &= ~devinfo.target_mask;
 780         }
 781
 782         if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 783                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
 784                                    &spi->bus_width, ROLE_UNKNOWN);
 785                 ahd_set_width(ahd, &devinfo, spi->bus_width,
 786                               update_type, /*paused*/FALSE);
 787         }
 788
 789         if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 790                 if (update_type == AHD_TRANS_USER)
 791                         spi->ppr_options = tinfo->user.ppr_options;
 792                 else
 793                         spi->ppr_options = tinfo->goal.ppr_options;
 794         }
 795
 796         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 797                 if (update_type == AHD_TRANS_USER)
 798                         spi->sync_offset = tinfo->user.offset;
 799                 else
 800                         spi->sync_offset = tinfo->goal.offset;
 801         }
 802
 803         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 804                 if (update_type == AHD_TRANS_USER)
 805                         spi->sync_period = tinfo->user.period;
 806                 else
 807                         spi->sync_period = tinfo->goal.period;
 808         }
 809
 810         if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 811          || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 812                 u_int   maxsync;
 813
 814                 maxsync = AHD_SYNCRATE_MAX;
 815
 816                 if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 817                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 818
 819                 if ((*discenable & devinfo.target_mask) == 0)
 820                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
 821
 822                 ahd_find_syncrate(ahd, &spi->sync_period,
 823                                   &spi->ppr_options, maxsync);
 824                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
 825                                     spi->sync_period, &spi->sync_offset,
 826                                     spi->bus_width, ROLE_UNKNOWN);
 827
 828                 /* We use a period of 0 to represent async */
 829                 if (spi->sync_offset == 0) {
 830                         spi->sync_period = 0;
 831                         spi->ppr_options = 0;
 832                 }
 833
 834                 ahd_set_syncrate(ahd, &devinfo, spi->sync_period,
 835                                  spi->sync_offset, spi->ppr_options,
 836                                  update_type, /*paused*/FALSE);
 837         }
 838         cts->ccb_h.status = CAM_REQ_CMP;
 839 }
 840
 841 static void
 842 ahd_get_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 843                       struct ccb_trans_settings *cts)
 844 {
 845         struct  ahd_devinfo devinfo;
 846         struct  ccb_trans_settings_scsi *scsi;
 847         struct  ccb_trans_settings_spi *spi;
 848         struct  ahd_initiator_tinfo *targ_info;
 849         struct  ahd_tmode_tstate *tstate;
 850         struct  ahd_transinfo *tinfo;
 851
 852         scsi = &cts->proto_specific.scsi;
 853         spi = &cts->xport_specific.spi;
 854         ahd_compile_devinfo(&devinfo, our_id,
 855                             cts->ccb_h.target_id,
 856                             cts->ccb_h.target_lun,
 857                             channel, ROLE_UNKNOWN);
 858         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
 859                                         devinfo.our_scsiid,
 860                                         devinfo.target, &tstate);
 861
 862         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 863                 tinfo = &targ_info->curr;
 864         else
 865                 tinfo = &targ_info->user;
 866
 867         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 868         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 869         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 870                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
 871                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 872
 873                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
 874                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 875         } else {
 876                 if ((tstate->discenable & devinfo.target_mask) != 0)
 877                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 878
 879                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 880                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 881         }
 882         cts->protocol_version = tinfo->protocol_version;
 883         cts->transport_version = tinfo->transport_version;
 884
 885         spi->sync_period = tinfo->period;
 886         spi->sync_offset = tinfo->offset;
 887         spi->bus_width = tinfo->width;
 888         spi->ppr_options = tinfo->ppr_options;
 889
 890         cts->protocol = PROTO_SCSI;
 891         cts->transport = XPORT_SPI;
 892         spi->valid = CTS_SPI_VALID_SYNC_RATE
 893                    | CTS_SPI_VALID_SYNC_OFFSET
 894                    | CTS_SPI_VALID_BUS_WIDTH
 895                    | CTS_SPI_VALID_PPR_OPTIONS;
 896
 897         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 898                 scsi->valid = CTS_SCSI_VALID_TQ;
 899                 spi->valid |= CTS_SPI_VALID_DISC;
 900         } else {
 901                 scsi->valid = 0;
 902         }
 903
 904         cts->ccb_h.status = CAM_REQ_CMP;
 905 }
 906
 907 static void
 908 ahd_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 909 {
 910         struct ahd_softc *ahd;
 911         struct cam_sim *sim;
 912
 913         sim = (struct cam_sim *)callback_arg;
 914         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 915         switch (code) {
 916         case AC_LOST_DEVICE:
 917         {
 918                 struct  ahd_devinfo devinfo;
 919
 920                 ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 921                                     xpt_path_target_id(path),
 922                                     xpt_path_lun_id(path),
 923                                     SIM_CHANNEL(ahd, sim),
 924                                     ROLE_UNKNOWN);
 925
 926                 /*
 927                  * Revert to async/narrow transfers
 928                  * for the next device.
 929                  */
 930                 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
 931                               AHD_TRANS_GOAL|AHD_TRANS_CUR, /*paused*/FALSE);
 932                 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
 933                                  /*ppr_options*/0, AHD_TRANS_GOAL|AHD_TRANS_CUR,
 934                                  /*paused*/FALSE);
 935                 break;
 936         }
 937         default:
 938                 break;
 939         }
 940 }
 941
 942 static void
 943 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
 944                 int error)
 945 {
 946         struct  scb *scb;
 947         union   ccb *ccb;
 948         struct  ahd_softc *ahd;
 949         struct  ahd_initiator_tinfo *tinfo;
 950         struct  ahd_tmode_tstate *tstate;
 951         u_int   mask;
 952
 953         scb = (struct scb *)arg;
 954         ccb = scb->io_ctx;
 955         ahd = scb->ahd_softc;
 956
 957         if (error != 0) {
 958                 if (error == EFBIG)
 959                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
 960                 else
 961                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
 962                 if (nsegments != 0)
 963                         bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
 964                 ahd_free_scb(ahd, scb);
 965                 xpt_done(ccb);
 966                 return;
 967         }
 968         scb->sg_count = 0;
 969         if (nsegments != 0) {
 970                 void *sg;
 971                 bus_dmasync_op_t op;
 972                 u_int i;
 973
 974                 /* Copy the segments into our SG list */
 975                 for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
 976
 977                         sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
 978                                           dm_segs->ds_len,
 979                                           /*last*/i == 1);
 980                         dm_segs++;
 981                 }
 982
 983                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 984                         op = BUS_DMASYNC_PREREAD;
 985                 else
 986                         op = BUS_DMASYNC_PREWRITE;
 987
 988                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
 989
 990                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 991                         struct target_data *tdata;
 992
 993                         tdata = &scb->hscb->shared_data.tdata;
 994                         tdata->target_phases |= DPHASE_PENDING;
 995                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 996                                 tdata->data_phase = P_DATAOUT;
 997                         else
 998                                 tdata->data_phase = P_DATAIN;
 999                 }
1000         }
1001
1002         /*
1003          * Last time we need to check if this SCB needs to
1004          * be aborted.
1005          */
1006         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
1007                 if (nsegments != 0)
1008                         bus_dmamap_unload(ahd->buffer_dmat,
1009                                           scb->dmamap);
1010                 ahd_free_scb(ahd, scb);
1011                 xpt_done(ccb);
1012                 return;
1013         }
1014
1015         tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
1016                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1017                                     SCSIID_TARGET(ahd, scb->hscb->scsiid),
1018                                     &tstate);
1019
1020         mask = SCB_GET_TARGET_MASK(ahd, scb);
1021
1022         if ((tstate->discenable & mask) != 0
1023          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1024                 scb->hscb->control |= DISCENB;
1025
1026         if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1027                 scb->flags |= SCB_PACKETIZED;
1028                 if (scb->hscb->task_management != 0)
1029                         scb->hscb->control &= ~MK_MESSAGE;
1030         }
1031
1032         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1033          && (tinfo->goal.width != 0
1034           || tinfo->goal.period != 0
1035           || tinfo->goal.ppr_options != 0)) {
1036                 scb->flags |= SCB_NEGOTIATE;
1037                 scb->hscb->control |= MK_MESSAGE;
1038         } else if ((tstate->auto_negotiate & mask) != 0) {
1039                 scb->flags |= SCB_AUTO_NEGOTIATE;
1040                 scb->hscb->control |= MK_MESSAGE;
1041         }
1042
1043         LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1044
1045         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1046
1047         aic_scb_timer_start(scb);
1048
1049         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1050                 /* Define a mapping from our tag to the SCB. */
1051                 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
1052                 ahd_pause(ahd);
1053                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1054                 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
1055                 ahd_unpause(ahd);
1056         } else {
1057                 ahd_queue_scb(ahd, scb);
1058         }
1059
1060 }
1061
1062 static void
1063 ahd_poll(struct cam_sim *sim)
1064 {
1065         ahd_intr(cam_sim_softc(sim));
1066 }
1067
1068 static void
1069 ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
1070                struct ccb_scsiio *csio, struct scb *scb)
1071 {
1072         struct hardware_scb *hscb;
1073         struct ccb_hdr *ccb_h;
1074         int error;
1075
1076         hscb = scb->hscb;
1077         ccb_h = &csio->ccb_h;
1078
1079         csio->resid = 0;
1080         csio->sense_resid = 0;
1081         if (ccb_h->func_code == XPT_SCSI_IO) {
1082                 hscb->cdb_len = csio->cdb_len;
1083                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1084
1085                         if (hscb->cdb_len > MAX_CDB_LEN
1086                          && (ccb_h->flags & CAM_CDB_PHYS) == 0) {
1087
1088                                 /*
1089                                  * Should CAM start to support CDB sizes
1090                                  * greater than 16 bytes, we could use
1091                                  * the sense buffer to store the CDB.
1092                                  */
1093                                 aic_set_transaction_status(scb,
1094                                                            CAM_REQ_INVALID);
1095                                 ahd_free_scb(ahd, scb);
1096                                 xpt_done((union ccb *)csio);
1097                                 return;
1098                         }
1099                         if ((ccb_h->flags & CAM_CDB_PHYS) != 0) {
1100                                 hscb->shared_data.idata.cdb_from_host.cdbptr =
1101                                    aic_htole64((uintptr_t)csio->cdb_io.cdb_ptr);
1102                                 hscb->shared_data.idata.cdb_from_host.cdblen =
1103                                    csio->cdb_len;
1104                                 hscb->cdb_len |= SCB_CDB_LEN_PTR;
1105                         } else {
1106                                 memcpy(hscb->shared_data.idata.cdb,
1107                                        csio->cdb_io.cdb_ptr,
1108                                        hscb->cdb_len);
1109                         }
1110                 } else {
1111                         if (hscb->cdb_len > MAX_CDB_LEN) {
1112
1113                                 aic_set_transaction_status(scb,
1114                                                            CAM_REQ_INVALID);
1115                                 ahd_free_scb(ahd, scb);
1116                                 xpt_done((union ccb *)csio);
1117                                 return;
1118                         }
1119                         memcpy(hscb->shared_data.idata.cdb,
1120                                csio->cdb_io.cdb_bytes, hscb->cdb_len);
1121                 }
1122         }
1123
1124         error = bus_dmamap_load_ccb(ahd->buffer_dmat,
1125                                     scb->dmamap,
1126                                     (union ccb *)csio,
1127                                     ahd_execute_scb,
1128                                     scb, /*flags*/0);
1129         if (error == EINPROGRESS) {
1130                 /*
1131                  * So as to maintain ordering, freeze the controller queue
1132                  * until our mapping is returned.
1133                  */
1134                 xpt_freeze_simq(sim, /*count*/1);
1135                 scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
1136         }
1137 }
1138
1139 static void
1140 ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
1141 {
1142         union ccb *abort_ccb;
1143
1144         abort_ccb = ccb->cab.abort_ccb;
1145         switch (abort_ccb->ccb_h.func_code) {
1146 #ifdef AHD_TARGET_MODE
1147         case XPT_ACCEPT_TARGET_IO:
1148         case XPT_IMMEDIATE_NOTIFY:
1149         case XPT_CONT_TARGET_IO:
1150         {
1151                 struct ahd_tmode_tstate *tstate;
1152                 struct ahd_tmode_lstate *lstate;
1153                 struct ccb_hdr_slist *list;
1154                 cam_status status;
1155
1156                 status = ahd_find_tmode_devs(ahd, sim, abort_ccb, &tstate,
1157                                              &lstate, TRUE);
1158
1159                 if (status != CAM_REQ_CMP) {
1160                         ccb->ccb_h.status = status;
1161                         break;
1162                 }
1163
1164                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1165                         list = &lstate->accept_tios;
1166                 else if (abort_ccb->ccb_h.func_code == XPT_IMMEDIATE_NOTIFY)
1167                         list = &lstate->immed_notifies;
1168                 else
1169                         list = NULL;
1170
1171                 if (list != NULL) {
1172                         struct ccb_hdr *curelm;
1173                         int found;
1174
1175                         curelm = SLIST_FIRST(list);
1176                         found = 0;
1177                         if (curelm == &abort_ccb->ccb_h) {
1178                                 found = 1;
1179                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1180                         } else {
1181                                 while(curelm != NULL) {
1182                                         struct ccb_hdr *nextelm;
1183
1184                                         nextelm =
1185                                             SLIST_NEXT(curelm, sim_links.sle);
1186
1187                                         if (nextelm == &abort_ccb->ccb_h) {
1188                                                 found = 1;
1189                                                 SLIST_NEXT(curelm,
1190                                                            sim_links.sle) =
1191                                                     SLIST_NEXT(nextelm,
1192                                                                sim_links.sle);
1193                                                 break;
1194                                         }
1195                                         curelm = nextelm;
1196                                 }
1197                         }
1198
1199                         if (found) {
1200                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1201                                 xpt_done(abort_ccb);
1202                                 ccb->ccb_h.status = CAM_REQ_CMP;
1203                         } else {
1204                                 xpt_print_path(abort_ccb->ccb_h.path);
1205                                 printf("Not found\n");
1206                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1207                         }
1208                         break;
1209                 }
1210                 /* FALLTHROUGH */
1211         }
1212 #endif
1213         case XPT_SCSI_IO:
1214                 /* XXX Fully implement the hard ones */
1215                 ccb->ccb_h.status = CAM_UA_ABORT;
1216                 break;
1217         default:
1218                 ccb->ccb_h.status = CAM_REQ_INVALID;
1219                 break;
1220         }
1221         xpt_done(ccb);
1222 }
1223
1224 void
1225 ahd_send_async(struct ahd_softc *ahd, char channel, u_int target,
1226                 u_int lun, ac_code code, void *opt_arg)
1227 {
1228         struct  ccb_trans_settings cts;
1229         struct cam_path *path;
1230         void *arg;
1231         int error;
1232
1233         arg = NULL;
1234         error = ahd_create_path(ahd, channel, target, lun, &path);
1235
1236         if (error != CAM_REQ_CMP)
1237                 return;
1238
1239         switch (code) {
1240         case AC_TRANSFER_NEG:
1241         {
1242                 struct  ccb_trans_settings_scsi *scsi;
1243
1244                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1245                 scsi = &cts.proto_specific.scsi;
1246                 cts.ccb_h.path = path;
1247                 cts.ccb_h.target_id = target;
1248                 cts.ccb_h.target_lun = lun;
1249                 ahd_get_tran_settings(ahd, ahd->our_id, channel, &cts);
1250                 arg = &cts;
1251                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1252                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1253                 if (opt_arg == NULL)
1254                         break;
1255                 if (*((ahd_queue_alg *)opt_arg) == AHD_QUEUE_TAGGED)
1256                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1257                 scsi->valid |= CTS_SCSI_VALID_TQ;
1258                 break;
1259         }
1260         case AC_SENT_BDR:
1261         case AC_BUS_RESET:
1262                 break;
1263         default:
1264                 panic("ahd_send_async: Unexpected async event");
1265         }
1266         xpt_async(code, path, arg);
1267         xpt_free_path(path);
1268 }
1269
1270 void
1271 ahd_platform_set_tags(struct ahd_softc *ahd,
1272                       struct ahd_devinfo *devinfo, int enable)
1273 {
1274 }
1275
1276 int
1277 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1278 {
1279         ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF,
1280             M_NOWAIT | M_ZERO);
1281         if (ahd->platform_data == NULL)
1282                 return (ENOMEM);
1283         return (0);
1284 }
1285
1286 void
1287 ahd_platform_free(struct ahd_softc *ahd)
1288 {
1289         struct ahd_platform_data *pdata;
1290
1291         pdata = ahd->platform_data;
1292         if (pdata != NULL) {
1293                 if (pdata->regs[0] != NULL)
1294                         bus_release_resource(ahd->dev_softc,
1295                                              pdata->regs_res_type[0],
1296                                              pdata->regs_res_id[0],
1297                                              pdata->regs[0]);
1298
1299                 if (pdata->regs[1] != NULL)
1300                         bus_release_resource(ahd->dev_softc,
1301                                              pdata->regs_res_type[1],
1302                                              pdata->regs_res_id[1],
1303                                              pdata->regs[1]);
1304
1305                 if (pdata->irq != NULL)
1306                         bus_release_resource(ahd->dev_softc,
1307                                              pdata->irq_res_type,
1308                                              0, pdata->irq);
1309
1310                 if (pdata->sim != NULL) {
1311                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1312                         xpt_free_path(pdata->path);
1313                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1314                         cam_sim_free(pdata->sim, /*free_devq*/TRUE);
1315                 }
1316                 if (pdata->eh != NULL)
1317                         EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
1318                 free(ahd->platform_data, M_DEVBUF);
1319         }
1320 }
1321
1322 int
1323 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
1324 {
1325         /* We don't sort softcs under FreeBSD so report equal always */
1326         return (0);
1327 }
1328
1329 int
1330 ahd_detach(device_t dev)
1331 {
1332         struct ahd_softc *ahd;
1333
1334         device_printf(dev, "detaching device\n");
1335         ahd = device_get_softc(dev);
1336         ahd_lock(ahd);
1337         TAILQ_REMOVE(&ahd_tailq, ahd, links);
1338         ahd_intr_enable(ahd, FALSE);
1339         bus_teardown_intr(dev, ahd->platform_data->irq, ahd->platform_data->ih);
1340         ahd_unlock(ahd);
1341         ahd_free(ahd);
1342         return (0);
1343 }
1344
1345 #if 0
1346 static void
1347 ahd_dump_targcmd(struct target_cmd *cmd)
1348 {
1349         uint8_t *byte;
1350         uint8_t *last_byte;
1351         int i;
1352
1353         byte = &cmd->initiator_channel;
1354         /* Debugging info for received commands */
1355         last_byte = &cmd[1].initiator_channel;
1356
1357         i = 0;
1358         while (byte < last_byte) {
1359                 if (i == 0)
1360                         printf("\t");
1361                 printf("%#x", *byte++);
1362                 i++;
1363                 if (i == 8) {
1364                         printf("\n");
1365                         i = 0;
1366                 } else {
1367                         printf(", ");
1368                 }
1369         }
1370 }
1371 #endif
1372
1373 static int
1374 ahd_modevent(module_t mod, int type, void *data)
1375 {
1376         /* XXX Deal with busy status on unload. */
1377         /* XXX Deal with unknown events */
1378         return 0;
1379 }
1380
1381 static moduledata_t ahd_mod = {
1382         "ahd",
1383         ahd_modevent,
1384         NULL
1385 };
1386
1387 /********************************** DDB Hooks *********************************/
1388 #ifdef DDB
1389 static struct ahd_softc *ahd_ddb_softc;
1390 static int ahd_ddb_paused;
1391 static int ahd_ddb_paused_on_entry;
1392 DB_COMMAND(ahd_sunit, ahd_ddb_sunit)
1393 {
1394         struct ahd_softc *list_ahd;
1395
1396         ahd_ddb_softc = NULL;
1397         TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
1398                 if (list_ahd->unit == addr)
1399                         ahd_ddb_softc = list_ahd;
1400         }
1401         if (ahd_ddb_softc == NULL)
1402                 db_error("No matching softc found!\n");
1403 }
1404
1405 DB_COMMAND(ahd_pause, ahd_ddb_pause)
1406 {
1407         if (ahd_ddb_softc == NULL) {
1408                 db_error("Must set unit with ahd_sunit first!\n");
1409                 return;
1410         }
1411         if (ahd_ddb_paused == 0) {
1412                 ahd_ddb_paused++;
1413                 if (ahd_is_paused(ahd_ddb_softc)) {
1414                         ahd_ddb_paused_on_entry++;
1415                         return;
1416                 }
1417                 ahd_pause(ahd_ddb_softc);
1418         }
1419 }
1420
1421 DB_COMMAND(ahd_unpause, ahd_ddb_unpause)
1422 {
1423         if (ahd_ddb_softc == NULL) {
1424                 db_error("Must set unit with ahd_sunit first!\n");
1425                 return;
1426         }
1427         if (ahd_ddb_paused != 0) {
1428                 ahd_ddb_paused = 0;
1429                 if (ahd_ddb_paused_on_entry)
1430                         return;
1431                 ahd_unpause(ahd_ddb_softc);
1432         } else if (ahd_ddb_paused_on_entry != 0) {
1433                 /* Two unpauses to clear a paused on entry. */
1434                 ahd_ddb_paused_on_entry = 0;
1435                 ahd_unpause(ahd_ddb_softc);
1436         }
1437 }
1438
1439 DB_COMMAND(ahd_in, ahd_ddb_in)
1440 {
1441         int c;
1442         int size;
1443
1444         if (ahd_ddb_softc == NULL) {
1445                 db_error("Must set unit with ahd_sunit first!\n");
1446                 return;
1447         }
1448         if (have_addr == 0)
1449                 return;
1450
1451         size = 1;
1452         while ((c = *modif++) != '\0') {
1453                 switch (c) {
1454                 case 'b':
1455                         size = 1;
1456                         break;
1457                 case 'w':
1458                         size = 2;
1459                         break;
1460                 case 'l':
1461                         size = 4;
1462                 break;
1463                 }
1464         }
1465
1466         if (count <= 0)
1467                 count = 1;
1468         while (--count >= 0) {
1469                 db_printf("%04lx (M)%x: \t", (u_long)addr,
1470                           ahd_inb(ahd_ddb_softc, MODE_PTR));
1471                 switch (size) {
1472                 case 1:
1473                         db_printf("%02x\n", ahd_inb(ahd_ddb_softc, addr));
1474                         break;
1475                 case 2:
1476                         db_printf("%04x\n", ahd_inw(ahd_ddb_softc, addr));
1477                         break;
1478                 case 4:
1479                         db_printf("%08x\n", ahd_inl(ahd_ddb_softc, addr));
1480                         break;
1481                 }
1482         }
1483 }
1484
1485 DB_FUNC(ahd_out, ahd_ddb_out, db_cmd_table, CS_MORE, NULL)
1486 {
1487         db_expr_t old_value;
1488         db_expr_t new_value;
1489         int       size;
1490
1491         if (ahd_ddb_softc == NULL) {
1492                 db_error("Must set unit with ahd_sunit first!\n");
1493                 return;
1494         }
1495
1496         switch (modif[0]) {
1497         case '\0':
1498         case 'b':
1499                 size = 1;
1500                 break;
1501         case 'h':
1502                 size = 2;
1503                 break;
1504         case 'l':
1505                 size = 4;
1506                 break;
1507         default:
1508                 db_error("Unknown size\n");
1509                 return;
1510         }
1511
1512         while (db_expression(&new_value)) {
1513                 switch (size) {
1514                 default:
1515                 case 1:
1516                         old_value = ahd_inb(ahd_ddb_softc, addr);
1517                         ahd_outb(ahd_ddb_softc, addr, new_value);
1518                         break;
1519                 case 2:
1520                         old_value = ahd_inw(ahd_ddb_softc, addr);
1521                         ahd_outw(ahd_ddb_softc, addr, new_value);
1522                         break;
1523                 case 4:
1524                         old_value = ahd_inl(ahd_ddb_softc, addr);
1525                         ahd_outl(ahd_ddb_softc, addr, new_value);
1526                         break;
1527                 }
1528                 db_printf("%04lx (M)%x: \t0x%lx\t=\t0x%lx",
1529                           (u_long)addr, ahd_inb(ahd_ddb_softc, MODE_PTR),
1530                           (u_long)old_value, (u_long)new_value);
1531                 addr += size;
1532         }
1533         db_skip_to_eol();
1534 }
1535
1536 DB_COMMAND(ahd_dump, ahd_ddb_dump)
1537 {
1538         if (ahd_ddb_softc == NULL) {
1539                 db_error("Must set unit with ahd_sunit first!\n");
1540                 return;
1541         }
1542         ahd_dump_card_state(ahd_ddb_softc);
1543 }
1544
1545 #endif
1546
1547
1548 DECLARE_MODULE(ahd, ahd_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1549 MODULE_DEPEND(ahd, cam, 1, 1, 1);
1550 MODULE_VERSION(ahd, 1);