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),
 164                 CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
 165                 ahd_sysctl_node_descriptions[AHD_SYSCTL_ROOT]);
 166             SYSCTL_ADD_PROC(&ahd->sysctl_ctx[AHD_SYSCTL_ROOT],
 167                 SYSCTL_CHILDREN(ahd->sysctl_tree[AHD_SYSCTL_ROOT]), OID_AUTO,
 168                 "clear", CTLTYPE_UINT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, ahd,
 169                 0, ahd_clear_allcounters, "IU", "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 | CTLFLAG_MPSAFE, 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 | CTLFLAG_NEEDGIANT, 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         memset(&csa, 0, sizeof(csa));
 271         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 272         csa.ccb_h.func_code = XPT_SASYNC_CB;
 273         csa.event_enable = AC_LOST_DEVICE;
 274         csa.callback = ahd_async;
 275         csa.callback_arg = sim;
 276         xpt_action((union ccb *)&csa);
 277         count++;
 278
 279 fail:
 280         ahd->platform_data->sim = sim;
 281         ahd->platform_data->path = path;
 282         ahd_unlock(ahd);
 283         if (count != 0) {
 284                 /* We have to wait until after any system dumps... */
 285                 ahd->platform_data->eh =
 286                     EVENTHANDLER_REGISTER(shutdown_final, ahd_shutdown,
 287                                           ahd, SHUTDOWN_PRI_DEFAULT);
 288                 ahd_intr_enable(ahd, TRUE);
 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                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 353                                 ahd->pending_device = NULL;
 354                         } else {
 355                                 xpt_print_path(ccb->ccb_h.path);
 356                                 printf("Still disconnected\n");
 357                                 ahd_freeze_ccb(ccb);
 358                         }
 359                 }
 360
 361                 if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
 362                         ccb->ccb_h.status |= CAM_REQ_CMP;
 363                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 364                 ahd_free_scb(ahd, scb);
 365                 xpt_done(ccb);
 366                 return;
 367         }
 368 #endif
 369
 370         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
 371                 struct  scb *list_scb;
 372
 373                 ahd->scb_data.recovery_scbs--;
 374
 375                 if (aic_get_transaction_status(scb) == CAM_BDR_SENT
 376                  || aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
 377                         aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
 378
 379                 if (ahd->scb_data.recovery_scbs == 0) {
 380                         /*
 381                          * All recovery actions have completed successfully,
 382                          * so reinstate the timeouts for all other pending
 383                          * commands.
 384                          */
 385                         LIST_FOREACH(list_scb,
 386                                      &ahd->pending_scbs, pending_links) {
 387                                 aic_scb_timer_reset(list_scb,
 388                                                     aic_get_timeout(scb));
 389                         }
 390
 391                         ahd_print_path(ahd, scb);
 392                         printf("no longer in timeout, status = %x\n",
 393                                ccb->ccb_h.status);
 394                 }
 395         }
 396
 397         /* Don't clobber any existing error state */
 398         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
 399                 ccb->ccb_h.status |= CAM_REQ_CMP;
 400         } else if ((scb->flags & SCB_SENSE) != 0) {
 401                 /*
 402                  * We performed autosense retrieval.
 403                  *
 404                  * Zero any sense not transferred by the
 405                  * device.  The SCSI spec mandates that any
 406                  * untransfered data should be assumed to be
 407                  * zero.  Complete the 'bounce' of sense information
 408                  * through buffers accessible via bus-space by
 409                  * copying it into the clients csio.
 410                  */
 411                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 412                 memcpy(&ccb->csio.sense_data,
 413                        ahd_get_sense_buf(ahd, scb),
 414 /* XXX What size do we want to use??? */
 415                         sizeof(ccb->csio.sense_data)
 416                        - ccb->csio.sense_resid);
 417                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 418         } else if ((scb->flags & SCB_PKT_SENSE) != 0) {
 419                 struct scsi_status_iu_header *siu;
 420                 u_int sense_len;
 421
 422                 /*
 423                  * Copy only the sense data into the provided buffer.
 424                  */
 425                 siu = (struct scsi_status_iu_header *)scb->sense_data;
 426                 sense_len = MIN(scsi_4btoul(siu->sense_length),
 427                                 sizeof(ccb->csio.sense_data));
 428                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 429                 memcpy(&ccb->csio.sense_data,
 430                        ahd_get_sense_buf(ahd, scb) + SIU_SENSE_OFFSET(siu),
 431                        sense_len);
 432 #ifdef AHD_DEBUG
 433                 if ((ahd_debug & AHD_SHOW_SENSE) != 0) {
 434                         uint8_t *sense_data = (uint8_t *)&ccb->csio.sense_data;
 435                         u_int i;
 436
 437                         printf("Copied %d bytes of sense data offset %d:",
 438                                sense_len, SIU_SENSE_OFFSET(siu));
 439                         for (i = 0; i < sense_len; i++)
 440                                 printf(" 0x%x", *sense_data++);
 441                         printf("\n");
 442                 }
 443 #endif
 444                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 445         }
 446         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 447         ahd_free_scb(ahd, scb);
 448         xpt_done(ccb);
 449 }
 450
 451 static void
 452 ahd_action(struct cam_sim *sim, union ccb *ccb)
 453 {
 454         struct  ahd_softc *ahd;
 455 #ifdef AHD_TARGET_MODE
 456         struct  ahd_tmode_lstate *lstate;
 457 #endif
 458         u_int   target_id;
 459         u_int   our_id;
 460
 461         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahd_action\n"));
 462
 463         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 464
 465         target_id = ccb->ccb_h.target_id;
 466         our_id = SIM_SCSI_ID(ahd, sim);
 467
 468         switch (ccb->ccb_h.func_code) {
 469         /* Common cases first */
 470 #ifdef AHD_TARGET_MODE
 471         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 472         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 473         {
 474                 struct     ahd_tmode_tstate *tstate;
 475                 cam_status status;
 476
 477                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 478                                              &lstate, TRUE);
 479
 480                 if (status != CAM_REQ_CMP) {
 481                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 482                                 /* Response from the black hole device */
 483                                 tstate = NULL;
 484                                 lstate = ahd->black_hole;
 485                         } else {
 486                                 ccb->ccb_h.status = status;
 487                                 xpt_done(ccb);
 488                                 break;
 489                         }
 490                 }
 491                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 492                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 493                                           sim_links.sle);
 494                         ccb->ccb_h.status = CAM_REQ_INPROG;
 495                         if ((ahd->flags & AHD_TQINFIFO_BLOCKED) != 0)
 496                                 ahd_run_tqinfifo(ahd, /*paused*/FALSE);
 497                         break;
 498                 }
 499
 500                 /*
 501                  * The target_id represents the target we attempt to
 502                  * select.  In target mode, this is the initiator of
 503                  * the original command.
 504                  */
 505                 our_id = target_id;
 506                 target_id = ccb->csio.init_id;
 507                 /* FALLTHROUGH */
 508         }
 509 #endif
 510         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 511         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 512         {
 513                 struct  scb *scb;
 514                 struct  hardware_scb *hscb;
 515                 struct  ahd_initiator_tinfo *tinfo;
 516                 struct  ahd_tmode_tstate *tstate;
 517                 u_int   col_idx;
 518
 519                 if ((ahd->flags & AHD_INITIATORROLE) == 0
 520                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 521                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 522                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 523                         xpt_done(ccb);
 524                         return;
 525                 }
 526
 527                 /*
 528                  * get an scb to use.
 529                  */
 530                 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
 531                                             target_id, &tstate);
 532                 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
 533                  || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
 534                  || ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 535                         col_idx = AHD_NEVER_COL_IDX;
 536                 } else {
 537                         col_idx = AHD_BUILD_COL_IDX(target_id,
 538                                                     ccb->ccb_h.target_lun);
 539                 }
 540                 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
 541                         xpt_freeze_simq(sim, /*count*/1);
 542                         ahd->flags |= AHD_RESOURCE_SHORTAGE;
 543                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 544                         xpt_done(ccb);
 545                         return;
 546                 }
 547
 548                 hscb = scb->hscb;
 549
 550                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 551                           ("start scb(%p)\n", scb));
 552                 scb->io_ctx = ccb;
 553                 /*
 554                  * So we can find the SCB when an abort is requested
 555                  */
 556                 ccb->ccb_h.ccb_scb_ptr = scb;
 557
 558                 /*
 559                  * Put all the arguments for the xfer in the scb
 560                  */
 561                 hscb->control = 0;
 562                 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id);
 563                 hscb->lun = ccb->ccb_h.target_lun;
 564                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 565                         hscb->cdb_len = 0;
 566                         scb->flags |= SCB_DEVICE_RESET;
 567                         hscb->control |= MK_MESSAGE;
 568                         hscb->task_management = SIU_TASKMGMT_LUN_RESET;
 569                         ahd_execute_scb(scb, NULL, 0, 0);
 570                 } else {
 571 #ifdef AHD_TARGET_MODE
 572                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 573                                 struct target_data *tdata;
 574
 575                                 tdata = &hscb->shared_data.tdata;
 576                                 if (ahd->pending_device == lstate)
 577                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 578                                 hscb->control |= TARGET_SCB;
 579                                 tdata->target_phases = 0;
 580                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 581                                         tdata->target_phases |= SPHASE_PENDING;
 582                                         tdata->scsi_status =
 583                                             ccb->csio.scsi_status;
 584                                 }
 585                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 586                                         tdata->target_phases |= NO_DISCONNECT;
 587
 588                                 tdata->initiator_tag =
 589                                     ahd_htole16(ccb->csio.tag_id);
 590                         }
 591 #endif
 592                         hscb->task_management = 0;
 593                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 594                                 hscb->control |= ccb->csio.tag_action;
 595
 596                         ahd_setup_data(ahd, sim, &ccb->csio, scb);
 597                 }
 598                 break;
 599         }
 600 #ifdef AHD_TARGET_MODE
 601         case XPT_NOTIFY_ACKNOWLEDGE:
 602         case XPT_IMMEDIATE_NOTIFY:
 603         {
 604                 struct     ahd_tmode_tstate *tstate;
 605                 struct     ahd_tmode_lstate *lstate;
 606                 cam_status status;
 607
 608                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 609                                              &lstate, TRUE);
 610
 611                 if (status != CAM_REQ_CMP) {
 612                         ccb->ccb_h.status = status;
 613                         xpt_done(ccb);
 614                         break;
 615                 }
 616                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 617                                   sim_links.sle);
 618                 ccb->ccb_h.status = CAM_REQ_INPROG;
 619                 ahd_send_lstate_events(ahd, lstate);
 620                 break;
 621         }
 622         case XPT_EN_LUN:                /* Enable LUN as a target */
 623                 ahd_handle_en_lun(ahd, sim, ccb);
 624                 xpt_done(ccb);
 625                 break;
 626 #endif
 627         case XPT_ABORT:                 /* Abort the specified CCB */
 628         {
 629                 ahd_abort_ccb(ahd, sim, ccb);
 630                 break;
 631         }
 632         case XPT_SET_TRAN_SETTINGS:
 633         {
 634                 ahd_set_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 635                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 636                 xpt_done(ccb);
 637                 break;
 638         }
 639         case XPT_GET_TRAN_SETTINGS:
 640         /* Get default/user set transfer settings for the target */
 641         {
 642                 ahd_get_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 643                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 644                 xpt_done(ccb);
 645                 break;
 646         }
 647         case XPT_CALC_GEOMETRY:
 648         {
 649                 aic_calc_geometry(&ccb->ccg, ahd->flags & AHD_EXTENDED_TRANS_A);
 650                 xpt_done(ccb);
 651                 break;
 652         }
 653         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 654         {
 655                 int  found;
 656
 657                 found = ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
 658                                           /*initiate reset*/TRUE);
 659                 if (bootverbose) {
 660                         xpt_print_path(SIM_PATH(ahd, sim));
 661                         printf("SCSI bus reset delivered. "
 662                                "%d SCBs aborted.\n", found);
 663                 }
 664                 ccb->ccb_h.status = CAM_REQ_CMP;
 665                 xpt_done(ccb);
 666                 break;
 667         }
 668         case XPT_TERM_IO:               /* Terminate the I/O process */
 669                 /* XXX Implement */
 670                 ccb->ccb_h.status = CAM_REQ_INVALID;
 671                 xpt_done(ccb);
 672                 break;
 673         case XPT_PATH_INQ:              /* Path routing inquiry */
 674         {
 675                 struct ccb_pathinq *cpi = &ccb->cpi;
 676
 677                 cpi->version_num = 1; /* XXX??? */
 678                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 679                 if ((ahd->features & AHD_WIDE) != 0)
 680                         cpi->hba_inquiry |= PI_WIDE_16;
 681                 if ((ahd->features & AHD_TARGETMODE) != 0) {
 682                         cpi->target_sprt = PIT_PROCESSOR
 683                                          | PIT_DISCONNECT
 684                                          | PIT_TERM_IO;
 685                 } else {
 686                         cpi->target_sprt = 0;
 687                 }
 688                 cpi->hba_misc = 0;
 689                 cpi->hba_eng_cnt = 0;
 690                 cpi->max_target = (ahd->features & AHD_WIDE) ? 15 : 7;
 691                 cpi->max_lun = AHD_NUM_LUNS_NONPKT - 1;
 692                 cpi->initiator_id = ahd->our_id;
 693                 if ((ahd->flags & AHD_RESET_BUS_A) == 0) {
 694                         cpi->hba_misc |= PIM_NOBUSRESET;
 695                 }
 696                 cpi->bus_id = cam_sim_bus(sim);
 697                 cpi->base_transfer_speed = 3300;
 698                 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 699                 strlcpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 700                 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 701                 cpi->unit_number = cam_sim_unit(sim);
 702                 cpi->protocol = PROTO_SCSI;
 703                 cpi->protocol_version = SCSI_REV_2;
 704                 cpi->transport = XPORT_SPI;
 705                 cpi->transport_version = 4;
 706                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST
 707                                                     | SID_SPI_IUS
 708                                                     | SID_SPI_QAS;
 709                 cpi->ccb_h.status = CAM_REQ_CMP;
 710                 xpt_done(ccb);
 711                 break;
 712         }
 713         default:
 714                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 715                 xpt_done(ccb);
 716                 break;
 717         }
 718 }
 719
 720 static void
 721 ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 722                       struct ccb_trans_settings *cts)
 723 {
 724         struct    ahd_devinfo devinfo;
 725         struct    ccb_trans_settings_scsi *scsi;
 726         struct    ccb_trans_settings_spi *spi;
 727         struct    ahd_initiator_tinfo *tinfo;
 728         struct    ahd_tmode_tstate *tstate;
 729         uint16_t *discenable;
 730         uint16_t *tagenable;
 731         u_int     update_type;
 732
 733         scsi = &cts->proto_specific.scsi;
 734         spi = &cts->xport_specific.spi;
 735         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 736                             cts->ccb_h.target_id,
 737                             cts->ccb_h.target_lun,
 738                             SIM_CHANNEL(ahd, sim),
 739                             ROLE_UNKNOWN);
 740         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
 741                                     devinfo.our_scsiid,
 742                                     devinfo.target, &tstate);
 743         update_type = 0;
 744         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 745                 update_type |= AHD_TRANS_GOAL;
 746                 discenable = &tstate->discenable;
 747                 tagenable = &tstate->tagenable;
 748                 tinfo->curr.protocol_version = cts->protocol_version;
 749                 tinfo->curr.transport_version = cts->transport_version;
 750                 tinfo->goal.protocol_version = cts->protocol_version;
 751                 tinfo->goal.transport_version = cts->transport_version;
 752         } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 753                 update_type |= AHD_TRANS_USER;
 754                 discenable = &ahd->user_discenable;
 755                 tagenable = &ahd->user_tagenable;
 756                 tinfo->user.protocol_version = cts->protocol_version;
 757                 tinfo->user.transport_version = cts->transport_version;
 758         } else {
 759                 cts->ccb_h.status = CAM_REQ_INVALID;
 760                 return;
 761         }
 762
 763         if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 764                 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 765                         *discenable |= devinfo.target_mask;
 766                 else
 767                         *discenable &= ~devinfo.target_mask;
 768         }
 769
 770         if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 771                 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 772                         *tagenable |= devinfo.target_mask;
 773                 else
 774                         *tagenable &= ~devinfo.target_mask;
 775         }
 776
 777         if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 778                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
 779                                    &spi->bus_width, ROLE_UNKNOWN);
 780                 ahd_set_width(ahd, &devinfo, spi->bus_width,
 781                               update_type, /*paused*/FALSE);
 782         }
 783
 784         if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 785                 if (update_type == AHD_TRANS_USER)
 786                         spi->ppr_options = tinfo->user.ppr_options;
 787                 else
 788                         spi->ppr_options = tinfo->goal.ppr_options;
 789         }
 790
 791         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 792                 if (update_type == AHD_TRANS_USER)
 793                         spi->sync_offset = tinfo->user.offset;
 794                 else
 795                         spi->sync_offset = tinfo->goal.offset;
 796         }
 797
 798         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 799                 if (update_type == AHD_TRANS_USER)
 800                         spi->sync_period = tinfo->user.period;
 801                 else
 802                         spi->sync_period = tinfo->goal.period;
 803         }
 804
 805         if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 806          || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 807                 u_int   maxsync;
 808
 809                 maxsync = AHD_SYNCRATE_MAX;
 810
 811                 if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 812                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 813
 814                 if ((*discenable & devinfo.target_mask) == 0)
 815                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
 816
 817                 ahd_find_syncrate(ahd, &spi->sync_period,
 818                                   &spi->ppr_options, maxsync);
 819                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
 820                                     spi->sync_period, &spi->sync_offset,
 821                                     spi->bus_width, ROLE_UNKNOWN);
 822
 823                 /* We use a period of 0 to represent async */
 824                 if (spi->sync_offset == 0) {
 825                         spi->sync_period = 0;
 826                         spi->ppr_options = 0;
 827                 }
 828
 829                 ahd_set_syncrate(ahd, &devinfo, spi->sync_period,
 830                                  spi->sync_offset, spi->ppr_options,
 831                                  update_type, /*paused*/FALSE);
 832         }
 833         cts->ccb_h.status = CAM_REQ_CMP;
 834 }
 835
 836 static void
 837 ahd_get_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 838                       struct ccb_trans_settings *cts)
 839 {
 840         struct  ahd_devinfo devinfo;
 841         struct  ccb_trans_settings_scsi *scsi;
 842         struct  ccb_trans_settings_spi *spi;
 843         struct  ahd_initiator_tinfo *targ_info;
 844         struct  ahd_tmode_tstate *tstate;
 845         struct  ahd_transinfo *tinfo;
 846
 847         scsi = &cts->proto_specific.scsi;
 848         spi = &cts->xport_specific.spi;
 849         ahd_compile_devinfo(&devinfo, our_id,
 850                             cts->ccb_h.target_id,
 851                             cts->ccb_h.target_lun,
 852                             channel, ROLE_UNKNOWN);
 853         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
 854                                         devinfo.our_scsiid,
 855                                         devinfo.target, &tstate);
 856
 857         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 858                 tinfo = &targ_info->curr;
 859         else
 860                 tinfo = &targ_info->user;
 861
 862         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 863         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 864         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 865                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
 866                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 867
 868                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
 869                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 870         } else {
 871                 if ((tstate->discenable & devinfo.target_mask) != 0)
 872                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 873
 874                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 875                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 876         }
 877         cts->protocol_version = tinfo->protocol_version;
 878         cts->transport_version = tinfo->transport_version;
 879
 880         spi->sync_period = tinfo->period;
 881         spi->sync_offset = tinfo->offset;
 882         spi->bus_width = tinfo->width;
 883         spi->ppr_options = tinfo->ppr_options;
 884
 885         cts->protocol = PROTO_SCSI;
 886         cts->transport = XPORT_SPI;
 887         spi->valid = CTS_SPI_VALID_SYNC_RATE
 888                    | CTS_SPI_VALID_SYNC_OFFSET
 889                    | CTS_SPI_VALID_BUS_WIDTH
 890                    | CTS_SPI_VALID_PPR_OPTIONS;
 891
 892         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 893                 scsi->valid = CTS_SCSI_VALID_TQ;
 894                 spi->valid |= CTS_SPI_VALID_DISC;
 895         } else {
 896                 scsi->valid = 0;
 897         }
 898
 899         cts->ccb_h.status = CAM_REQ_CMP;
 900 }
 901
 902 static void
 903 ahd_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 904 {
 905         struct ahd_softc *ahd;
 906         struct cam_sim *sim;
 907
 908         sim = (struct cam_sim *)callback_arg;
 909         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 910         switch (code) {
 911         case AC_LOST_DEVICE:
 912         {
 913                 struct  ahd_devinfo devinfo;
 914
 915                 ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 916                                     xpt_path_target_id(path),
 917                                     xpt_path_lun_id(path),
 918                                     SIM_CHANNEL(ahd, sim),
 919                                     ROLE_UNKNOWN);
 920
 921                 /*
 922                  * Revert to async/narrow transfers
 923                  * for the next device.
 924                  */
 925                 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
 926                               AHD_TRANS_GOAL|AHD_TRANS_CUR, /*paused*/FALSE);
 927                 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
 928                                  /*ppr_options*/0, AHD_TRANS_GOAL|AHD_TRANS_CUR,
 929                                  /*paused*/FALSE);
 930                 break;
 931         }
 932         default:
 933                 break;
 934         }
 935 }
 936
 937 static void
 938 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
 939                 int error)
 940 {
 941         struct  scb *scb;
 942         union   ccb *ccb;
 943         struct  ahd_softc *ahd;
 944         struct  ahd_initiator_tinfo *tinfo;
 945         struct  ahd_tmode_tstate *tstate;
 946         u_int   mask;
 947
 948         scb = (struct scb *)arg;
 949         ccb = scb->io_ctx;
 950         ahd = scb->ahd_softc;
 951
 952         if (error != 0) {
 953                 if (error == EFBIG)
 954                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
 955                 else
 956                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
 957                 if (nsegments != 0)
 958                         bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
 959                 ahd_free_scb(ahd, scb);
 960                 xpt_done(ccb);
 961                 return;
 962         }
 963         scb->sg_count = 0;
 964         if (nsegments != 0) {
 965                 void *sg;
 966                 bus_dmasync_op_t op;
 967                 u_int i;
 968
 969                 /* Copy the segments into our SG list */
 970                 for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
 971                         sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
 972                                           dm_segs->ds_len,
 973                                           /*last*/i == 1);
 974                         dm_segs++;
 975                 }
 976
 977                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 978                         op = BUS_DMASYNC_PREREAD;
 979                 else
 980                         op = BUS_DMASYNC_PREWRITE;
 981
 982                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
 983
 984                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 985                         struct target_data *tdata;
 986
 987                         tdata = &scb->hscb->shared_data.tdata;
 988                         tdata->target_phases |= DPHASE_PENDING;
 989                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 990                                 tdata->data_phase = P_DATAOUT;
 991                         else
 992                                 tdata->data_phase = P_DATAIN;
 993                 }
 994         }
 995
 996         /*
 997          * Last time we need to check if this SCB needs to
 998          * be aborted.
 999          */
1000         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
1001                 if (nsegments != 0)
1002                         bus_dmamap_unload(ahd->buffer_dmat,
1003                                           scb->dmamap);
1004                 ahd_free_scb(ahd, scb);
1005                 xpt_done(ccb);
1006                 return;
1007         }
1008
1009         tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
1010                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1011                                     SCSIID_TARGET(ahd, scb->hscb->scsiid),
1012                                     &tstate);
1013
1014         mask = SCB_GET_TARGET_MASK(ahd, scb);
1015
1016         if ((tstate->discenable & mask) != 0
1017          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1018                 scb->hscb->control |= DISCENB;
1019
1020         if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1021                 scb->flags |= SCB_PACKETIZED;
1022                 if (scb->hscb->task_management != 0)
1023                         scb->hscb->control &= ~MK_MESSAGE;
1024         }
1025
1026         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1027          && (tinfo->goal.width != 0
1028           || tinfo->goal.period != 0
1029           || tinfo->goal.ppr_options != 0)) {
1030                 scb->flags |= SCB_NEGOTIATE;
1031                 scb->hscb->control |= MK_MESSAGE;
1032         } else if ((tstate->auto_negotiate & mask) != 0) {
1033                 scb->flags |= SCB_AUTO_NEGOTIATE;
1034                 scb->hscb->control |= MK_MESSAGE;
1035         }
1036
1037         LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1038
1039         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1040
1041         aic_scb_timer_start(scb);
1042
1043         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1044                 /* Define a mapping from our tag to the SCB. */
1045                 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
1046                 ahd_pause(ahd);
1047                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1048                 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
1049                 ahd_unpause(ahd);
1050         } else {
1051                 ahd_queue_scb(ahd, scb);
1052         }
1053
1054 }
1055
1056 static void
1057 ahd_poll(struct cam_sim *sim)
1058 {
1059         ahd_intr(cam_sim_softc(sim));
1060 }
1061
1062 static void
1063 ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
1064                struct ccb_scsiio *csio, struct scb *scb)
1065 {
1066         struct hardware_scb *hscb;
1067         struct ccb_hdr *ccb_h;
1068         int error;
1069
1070         hscb = scb->hscb;
1071         ccb_h = &csio->ccb_h;
1072
1073         csio->resid = 0;
1074         csio->sense_resid = 0;
1075         if (ccb_h->func_code == XPT_SCSI_IO) {
1076                 hscb->cdb_len = csio->cdb_len;
1077                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1078                         if (hscb->cdb_len > MAX_CDB_LEN
1079                          && (ccb_h->flags & CAM_CDB_PHYS) == 0) {
1080                                 /*
1081                                  * Should CAM start to support CDB sizes
1082                                  * greater than 16 bytes, we could use
1083                                  * the sense buffer to store the CDB.
1084                                  */
1085                                 aic_set_transaction_status(scb,
1086                                                            CAM_REQ_INVALID);
1087                                 ahd_free_scb(ahd, scb);
1088                                 xpt_done((union ccb *)csio);
1089                                 return;
1090                         }
1091                         if ((ccb_h->flags & CAM_CDB_PHYS) != 0) {
1092                                 hscb->shared_data.idata.cdb_from_host.cdbptr =
1093                                    aic_htole64((uintptr_t)csio->cdb_io.cdb_ptr);
1094                                 hscb->shared_data.idata.cdb_from_host.cdblen =
1095                                    csio->cdb_len;
1096                                 hscb->cdb_len |= SCB_CDB_LEN_PTR;
1097                         } else {
1098                                 memcpy(hscb->shared_data.idata.cdb,
1099                                        csio->cdb_io.cdb_ptr,
1100                                        hscb->cdb_len);
1101                         }
1102                 } else {
1103                         if (hscb->cdb_len > MAX_CDB_LEN) {
1104                                 aic_set_transaction_status(scb,
1105                                                            CAM_REQ_INVALID);
1106                                 ahd_free_scb(ahd, scb);
1107                                 xpt_done((union ccb *)csio);
1108                                 return;
1109                         }
1110                         memcpy(hscb->shared_data.idata.cdb,
1111                                csio->cdb_io.cdb_bytes, hscb->cdb_len);
1112                 }
1113         }
1114
1115         error = bus_dmamap_load_ccb(ahd->buffer_dmat,
1116                                     scb->dmamap,
1117                                     (union ccb *)csio,
1118                                     ahd_execute_scb,
1119                                     scb, /*flags*/0);
1120         if (error == EINPROGRESS) {
1121                 /*
1122                  * So as to maintain ordering, freeze the controller queue
1123                  * until our mapping is returned.
1124                  */
1125                 xpt_freeze_simq(sim, /*count*/1);
1126                 scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
1127         }
1128 }
1129
1130 static void
1131 ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
1132 {
1133         union ccb *abort_ccb;
1134
1135         abort_ccb = ccb->cab.abort_ccb;
1136         switch (abort_ccb->ccb_h.func_code) {
1137 #ifdef AHD_TARGET_MODE
1138         case XPT_ACCEPT_TARGET_IO:
1139         case XPT_IMMEDIATE_NOTIFY:
1140         case XPT_CONT_TARGET_IO:
1141         {
1142                 struct ahd_tmode_tstate *tstate;
1143                 struct ahd_tmode_lstate *lstate;
1144                 struct ccb_hdr_slist *list;
1145                 cam_status status;
1146
1147                 status = ahd_find_tmode_devs(ahd, sim, abort_ccb, &tstate,
1148                                              &lstate, TRUE);
1149
1150                 if (status != CAM_REQ_CMP) {
1151                         ccb->ccb_h.status = status;
1152                         break;
1153                 }
1154
1155                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1156                         list = &lstate->accept_tios;
1157                 else if (abort_ccb->ccb_h.func_code == XPT_IMMEDIATE_NOTIFY)
1158                         list = &lstate->immed_notifies;
1159                 else
1160                         list = NULL;
1161
1162                 if (list != NULL) {
1163                         struct ccb_hdr *curelm;
1164                         int found;
1165
1166                         curelm = SLIST_FIRST(list);
1167                         found = 0;
1168                         if (curelm == &abort_ccb->ccb_h) {
1169                                 found = 1;
1170                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1171                         } else {
1172                                 while(curelm != NULL) {
1173                                         struct ccb_hdr *nextelm;
1174
1175                                         nextelm =
1176                                             SLIST_NEXT(curelm, sim_links.sle);
1177
1178                                         if (nextelm == &abort_ccb->ccb_h) {
1179                                                 found = 1;
1180                                                 SLIST_NEXT(curelm,
1181                                                            sim_links.sle) =
1182                                                     SLIST_NEXT(nextelm,
1183                                                                sim_links.sle);
1184                                                 break;
1185                                         }
1186                                         curelm = nextelm;
1187                                 }
1188                         }
1189
1190                         if (found) {
1191                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1192                                 xpt_done(abort_ccb);
1193                                 ccb->ccb_h.status = CAM_REQ_CMP;
1194                         } else {
1195                                 xpt_print_path(abort_ccb->ccb_h.path);
1196                                 printf("Not found\n");
1197                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1198                         }
1199                         break;
1200                 }
1201                 /* FALLTHROUGH */
1202         }
1203 #endif
1204         case XPT_SCSI_IO:
1205                 /* XXX Fully implement the hard ones */
1206                 ccb->ccb_h.status = CAM_UA_ABORT;
1207                 break;
1208         default:
1209                 ccb->ccb_h.status = CAM_REQ_INVALID;
1210                 break;
1211         }
1212         xpt_done(ccb);
1213 }
1214
1215 void
1216 ahd_send_async(struct ahd_softc *ahd, char channel, u_int target,
1217                 u_int lun, ac_code code, void *opt_arg)
1218 {
1219         struct  ccb_trans_settings cts;
1220         struct cam_path *path;
1221         void *arg;
1222         int error;
1223
1224         arg = NULL;
1225         error = ahd_create_path(ahd, channel, target, lun, &path);
1226
1227         if (error != CAM_REQ_CMP)
1228                 return;
1229
1230         switch (code) {
1231         case AC_TRANSFER_NEG:
1232         {
1233                 struct  ccb_trans_settings_scsi *scsi;
1234
1235                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1236                 scsi = &cts.proto_specific.scsi;
1237                 cts.ccb_h.path = path;
1238                 cts.ccb_h.target_id = target;
1239                 cts.ccb_h.target_lun = lun;
1240                 ahd_get_tran_settings(ahd, ahd->our_id, channel, &cts);
1241                 arg = &cts;
1242                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1243                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1244                 if (opt_arg == NULL)
1245                         break;
1246                 if (*((ahd_queue_alg *)opt_arg) == AHD_QUEUE_TAGGED)
1247                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1248                 scsi->valid |= CTS_SCSI_VALID_TQ;
1249                 break;
1250         }
1251         case AC_SENT_BDR:
1252         case AC_BUS_RESET:
1253                 break;
1254         default:
1255                 panic("ahd_send_async: Unexpected async event");
1256         }
1257         xpt_async(code, path, arg);
1258         xpt_free_path(path);
1259 }
1260
1261 void
1262 ahd_platform_set_tags(struct ahd_softc *ahd,
1263                       struct ahd_devinfo *devinfo, int enable)
1264 {
1265 }
1266
1267 int
1268 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1269 {
1270         ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF,
1271             M_NOWAIT | M_ZERO);
1272         if (ahd->platform_data == NULL)
1273                 return (ENOMEM);
1274         return (0);
1275 }
1276
1277 void
1278 ahd_platform_free(struct ahd_softc *ahd)
1279 {
1280         struct ahd_platform_data *pdata;
1281
1282         pdata = ahd->platform_data;
1283         if (pdata != NULL) {
1284                 if (pdata->regs[0] != NULL)
1285                         bus_release_resource(ahd->dev_softc,
1286                                              pdata->regs_res_type[0],
1287                                              pdata->regs_res_id[0],
1288                                              pdata->regs[0]);
1289
1290                 if (pdata->regs[1] != NULL)
1291                         bus_release_resource(ahd->dev_softc,
1292                                              pdata->regs_res_type[1],
1293                                              pdata->regs_res_id[1],
1294                                              pdata->regs[1]);
1295
1296                 if (pdata->irq != NULL)
1297                         bus_release_resource(ahd->dev_softc,
1298                                              pdata->irq_res_type,
1299                                              0, pdata->irq);
1300
1301                 if (pdata->sim != NULL) {
1302                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1303                         xpt_free_path(pdata->path);
1304                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1305                         cam_sim_free(pdata->sim, /*free_devq*/TRUE);
1306                 }
1307                 if (pdata->eh != NULL)
1308                         EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
1309                 free(ahd->platform_data, M_DEVBUF);
1310         }
1311 }
1312
1313 int
1314 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
1315 {
1316         /* We don't sort softcs under FreeBSD so report equal always */
1317         return (0);
1318 }
1319
1320 int
1321 ahd_detach(device_t dev)
1322 {
1323         struct ahd_softc *ahd;
1324
1325         device_printf(dev, "detaching device\n");
1326         ahd = device_get_softc(dev);
1327         ahd_lock(ahd);
1328         TAILQ_REMOVE(&ahd_tailq, ahd, links);
1329         ahd_intr_enable(ahd, FALSE);
1330         bus_teardown_intr(dev, ahd->platform_data->irq, ahd->platform_data->ih);
1331         ahd_unlock(ahd);
1332         ahd_free(ahd);
1333         return (0);
1334 }
1335
1336 #if 0
1337 static void
1338 ahd_dump_targcmd(struct target_cmd *cmd)
1339 {
1340         uint8_t *byte;
1341         uint8_t *last_byte;
1342         int i;
1343
1344         byte = &cmd->initiator_channel;
1345         /* Debugging info for received commands */
1346         last_byte = &cmd[1].initiator_channel;
1347
1348         i = 0;
1349         while (byte < last_byte) {
1350                 if (i == 0)
1351                         printf("\t");
1352                 printf("%#x", *byte++);
1353                 i++;
1354                 if (i == 8) {
1355                         printf("\n");
1356                         i = 0;
1357                 } else {
1358                         printf(", ");
1359                 }
1360         }
1361 }
1362 #endif
1363
1364 static int
1365 ahd_modevent(module_t mod, int type, void *data)
1366 {
1367         /* XXX Deal with busy status on unload. */
1368         /* XXX Deal with unknown events */
1369         return 0;
1370 }
1371
1372 static moduledata_t ahd_mod = {
1373         "ahd",
1374         ahd_modevent,
1375         NULL
1376 };
1377
1378 /********************************** DDB Hooks *********************************/
1379 #ifdef DDB
1380 static struct ahd_softc *ahd_ddb_softc;
1381 static int ahd_ddb_paused;
1382 static int ahd_ddb_paused_on_entry;
1383 DB_COMMAND(ahd_sunit, ahd_ddb_sunit)
1384 {
1385         struct ahd_softc *list_ahd;
1386
1387         ahd_ddb_softc = NULL;
1388         TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
1389                 if (list_ahd->unit == addr)
1390                         ahd_ddb_softc = list_ahd;
1391         }
1392         if (ahd_ddb_softc == NULL)
1393                 db_error("No matching softc found!\n");
1394 }
1395
1396 DB_COMMAND(ahd_pause, ahd_ddb_pause)
1397 {
1398         if (ahd_ddb_softc == NULL) {
1399                 db_error("Must set unit with ahd_sunit first!\n");
1400                 return;
1401         }
1402         if (ahd_ddb_paused == 0) {
1403                 ahd_ddb_paused++;
1404                 if (ahd_is_paused(ahd_ddb_softc)) {
1405                         ahd_ddb_paused_on_entry++;
1406                         return;
1407                 }
1408                 ahd_pause(ahd_ddb_softc);
1409         }
1410 }
1411
1412 DB_COMMAND(ahd_unpause, ahd_ddb_unpause)
1413 {
1414         if (ahd_ddb_softc == NULL) {
1415                 db_error("Must set unit with ahd_sunit first!\n");
1416                 return;
1417         }
1418         if (ahd_ddb_paused != 0) {
1419                 ahd_ddb_paused = 0;
1420                 if (ahd_ddb_paused_on_entry)
1421                         return;
1422                 ahd_unpause(ahd_ddb_softc);
1423         } else if (ahd_ddb_paused_on_entry != 0) {
1424                 /* Two unpauses to clear a paused on entry. */
1425                 ahd_ddb_paused_on_entry = 0;
1426                 ahd_unpause(ahd_ddb_softc);
1427         }
1428 }
1429
1430 DB_COMMAND(ahd_in, ahd_ddb_in)
1431 {
1432         int c;
1433         int size;
1434
1435         if (ahd_ddb_softc == NULL) {
1436                 db_error("Must set unit with ahd_sunit first!\n");
1437                 return;
1438         }
1439         if (have_addr == 0)
1440                 return;
1441
1442         size = 1;
1443         while ((c = *modif++) != '\0') {
1444                 switch (c) {
1445                 case 'b':
1446                         size = 1;
1447                         break;
1448                 case 'w':
1449                         size = 2;
1450                         break;
1451                 case 'l':
1452                         size = 4;
1453                 break;
1454                 }
1455         }
1456
1457         if (count <= 0)
1458                 count = 1;
1459         while (--count >= 0) {
1460                 db_printf("%04lx (M)%x: \t", (u_long)addr,
1461                           ahd_inb(ahd_ddb_softc, MODE_PTR));
1462                 switch (size) {
1463                 case 1:
1464                         db_printf("%02x\n", ahd_inb(ahd_ddb_softc, addr));
1465                         break;
1466                 case 2:
1467                         db_printf("%04x\n", ahd_inw(ahd_ddb_softc, addr));
1468                         break;
1469                 case 4:
1470                         db_printf("%08x\n", ahd_inl(ahd_ddb_softc, addr));
1471                         break;
1472                 }
1473         }
1474 }
1475
1476 DB_FUNC(ahd_out, ahd_ddb_out, db_cmd_table, CS_MORE, NULL)
1477 {
1478         db_expr_t old_value;
1479         db_expr_t new_value;
1480         int       size;
1481
1482         if (ahd_ddb_softc == NULL) {
1483                 db_error("Must set unit with ahd_sunit first!\n");
1484                 return;
1485         }
1486
1487         switch (modif[0]) {
1488         case '\0':
1489         case 'b':
1490                 size = 1;
1491                 break;
1492         case 'h':
1493                 size = 2;
1494                 break;
1495         case 'l':
1496                 size = 4;
1497                 break;
1498         default:
1499                 db_error("Unknown size\n");
1500                 return;
1501         }
1502
1503         while (db_expression(&new_value)) {
1504                 switch (size) {
1505                 default:
1506                 case 1:
1507                         old_value = ahd_inb(ahd_ddb_softc, addr);
1508                         ahd_outb(ahd_ddb_softc, addr, new_value);
1509                         break;
1510                 case 2:
1511                         old_value = ahd_inw(ahd_ddb_softc, addr);
1512                         ahd_outw(ahd_ddb_softc, addr, new_value);
1513                         break;
1514                 case 4:
1515                         old_value = ahd_inl(ahd_ddb_softc, addr);
1516                         ahd_outl(ahd_ddb_softc, addr, new_value);
1517                         break;
1518                 }
1519                 db_printf("%04lx (M)%x: \t0x%lx\t=\t0x%lx",
1520                           (u_long)addr, ahd_inb(ahd_ddb_softc, MODE_PTR),
1521                           (u_long)old_value, (u_long)new_value);
1522                 addr += size;
1523         }
1524         db_skip_to_eol();
1525 }
1526
1527 DB_COMMAND(ahd_dump, ahd_ddb_dump)
1528 {
1529         if (ahd_ddb_softc == NULL) {
1530                 db_error("Must set unit with ahd_sunit first!\n");
1531                 return;
1532         }
1533         ahd_dump_card_state(ahd_ddb_softc);
1534 }
1535
1536 #endif
1537
1538 DECLARE_MODULE(ahd, ahd_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1539 MODULE_DEPEND(ahd, cam, 1, 1, 1);
1540 MODULE_VERSION(ahd, 1);