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
 226         /*
 227          * Create a thread to perform all recovery.
 228          */
 229         if (ahd_spawn_recovery_thread(ahd) != 0)
 230                 goto fail;
 231
 232         ahd_controller_info(ahd, ahd_info);
 233         printf("%s\n", ahd_info);
 234         ahd_lock(ahd);
 235
 236         /*
 237          * Create the device queue for our SIM(s).
 238          */
 239         devq = cam_simq_alloc(AHD_MAX_QUEUE);
 240         if (devq == NULL)
 241                 goto fail;
 242
 243         /*
 244          * Construct our SIM entry
 245          */
 246         sim = cam_sim_alloc(ahd_action, ahd_poll, "ahd", ahd,
 247                             device_get_unit(ahd->dev_softc),
 248                             &ahd->platform_data->mtx, 1, /*XXX*/256, devq);
 249         if (sim == NULL) {
 250                 cam_simq_free(devq);
 251                 goto fail;
 252         }
 253
 254         if (xpt_bus_register(sim, ahd->dev_softc, /*bus_id*/0) != CAM_SUCCESS) {
 255                 cam_sim_free(sim, /*free_devq*/TRUE);
 256                 sim = NULL;
 257                 goto fail;
 258         }
 259
 260         if (xpt_create_path(&path, /*periph*/NULL,
 261                             cam_sim_path(sim), CAM_TARGET_WILDCARD,
 262                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 263                 xpt_bus_deregister(cam_sim_path(sim));
 264                 cam_sim_free(sim, /*free_devq*/TRUE);
 265                 sim = NULL;
 266                 goto fail;
 267         }
 268
 269         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 270         csa.ccb_h.func_code = XPT_SASYNC_CB;
 271         csa.event_enable = AC_LOST_DEVICE;
 272         csa.callback = ahd_async;
 273         csa.callback_arg = sim;
 274         xpt_action((union ccb *)&csa);
 275         count++;
 276
 277 fail:
 278         ahd->platform_data->sim = sim;
 279         ahd->platform_data->path = path;
 280         ahd_unlock(ahd);
 281         if (count != 0) {
 282                 /* We have to wait until after any system dumps... */
 283                 ahd->platform_data->eh =
 284                     EVENTHANDLER_REGISTER(shutdown_final, ahd_shutdown,
 285                                           ahd, SHUTDOWN_PRI_DEFAULT);
 286                 ahd_intr_enable(ahd, TRUE);
 287         }
 288
 289
 290         return (count);
 291 }
 292
 293 /*
 294  * Catch an interrupt from the adapter
 295  */
 296 void
 297 ahd_platform_intr(void *arg)
 298 {
 299         struct  ahd_softc *ahd;
 300
 301         ahd = (struct ahd_softc *)arg;
 302         ahd_lock(ahd);
 303         ahd_intr(ahd);
 304         ahd_unlock(ahd);
 305 }
 306
 307 /*
 308  * We have an scb which has been processed by the
 309  * adaptor, now we look to see how the operation
 310  * went.
 311  */
 312 void
 313 ahd_done(struct ahd_softc *ahd, struct scb *scb)
 314 {
 315         union ccb *ccb;
 316
 317         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
 318                   ("ahd_done - scb %d\n", SCB_GET_TAG(scb)));
 319
 320         ccb = scb->io_ctx;
 321         LIST_REMOVE(scb, pending_links);
 322         if ((scb->flags & SCB_TIMEDOUT) != 0)
 323                 LIST_REMOVE(scb, timedout_links);
 324
 325         callout_stop(&scb->io_timer);
 326
 327         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 328                 bus_dmasync_op_t op;
 329
 330                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 331                         op = BUS_DMASYNC_POSTREAD;
 332                 else
 333                         op = BUS_DMASYNC_POSTWRITE;
 334                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
 335                 bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
 336         }
 337
 338 #ifdef AHD_TARGET_MODE
 339         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 340                 struct cam_path *ccb_path;
 341
 342                 /*
 343                  * If we have finally disconnected, clean up our
 344                  * pending device state.
 345                  * XXX - There may be error states that cause where
 346                  *       we will remain connected.
 347                  */
 348                 ccb_path = ccb->ccb_h.path;
 349                 if (ahd->pending_device != NULL
 350                  && xpt_path_comp(ahd->pending_device->path, ccb_path) == 0) {
 351
 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
 388                                 aic_scb_timer_reset(list_scb,
 389                                                     aic_get_timeout(scb));
 390                         }
 391
 392                         ahd_print_path(ahd, scb);
 393                         printf("no longer in timeout, status = %x\n",
 394                                ccb->ccb_h.status);
 395                 }
 396         }
 397
 398         /* Don't clobber any existing error state */
 399         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
 400                 ccb->ccb_h.status |= CAM_REQ_CMP;
 401         } else if ((scb->flags & SCB_SENSE) != 0) {
 402                 /*
 403                  * We performed autosense retrieval.
 404                  *
 405                  * Zero any sense not transferred by the
 406                  * device.  The SCSI spec mandates that any
 407                  * untransfered data should be assumed to be
 408                  * zero.  Complete the 'bounce' of sense information
 409                  * through buffers accessible via bus-space by
 410                  * copying it into the clients csio.
 411                  */
 412                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 413                 memcpy(&ccb->csio.sense_data,
 414                        ahd_get_sense_buf(ahd, scb),
 415 /* XXX What size do we want to use??? */
 416                         sizeof(ccb->csio.sense_data)
 417                        - ccb->csio.sense_resid);
 418                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 419         } else if ((scb->flags & SCB_PKT_SENSE) != 0) {
 420                 struct scsi_status_iu_header *siu;
 421                 u_int sense_len;
 422
 423                 /*
 424                  * Copy only the sense data into the provided buffer.
 425                  */
 426                 siu = (struct scsi_status_iu_header *)scb->sense_data;
 427                 sense_len = MIN(scsi_4btoul(siu->sense_length),
 428                                 sizeof(ccb->csio.sense_data));
 429                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 430                 memcpy(&ccb->csio.sense_data,
 431                        ahd_get_sense_buf(ahd, scb) + SIU_SENSE_OFFSET(siu),
 432                        sense_len);
 433 #ifdef AHD_DEBUG
 434                 if ((ahd_debug & AHD_SHOW_SENSE) != 0) {
 435                         uint8_t *sense_data = (uint8_t *)&ccb->csio.sense_data;
 436                         u_int i;
 437
 438                         printf("Copied %d bytes of sense data offset %d:",
 439                                sense_len, SIU_SENSE_OFFSET(siu));
 440                         for (i = 0; i < sense_len; i++)
 441                                 printf(" 0x%x", *sense_data++);
 442                         printf("\n");
 443                 }
 444 #endif
 445                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 446         }
 447         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 448         ahd_free_scb(ahd, scb);
 449         xpt_done(ccb);
 450 }
 451
 452 static void
 453 ahd_action(struct cam_sim *sim, union ccb *ccb)
 454 {
 455         struct  ahd_softc *ahd;
 456 #ifdef AHD_TARGET_MODE
 457         struct  ahd_tmode_lstate *lstate;
 458 #endif
 459         u_int   target_id;
 460         u_int   our_id;
 461
 462         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahd_action\n"));
 463
 464         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 465
 466         target_id = ccb->ccb_h.target_id;
 467         our_id = SIM_SCSI_ID(ahd, sim);
 468
 469         switch (ccb->ccb_h.func_code) {
 470         /* Common cases first */
 471 #ifdef AHD_TARGET_MODE
 472         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 473         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 474         {
 475                 struct     ahd_tmode_tstate *tstate;
 476                 cam_status status;
 477
 478                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 479                                              &lstate, TRUE);
 480
 481                 if (status != CAM_REQ_CMP) {
 482                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 483                                 /* Response from the black hole device */
 484                                 tstate = NULL;
 485                                 lstate = ahd->black_hole;
 486                         } else {
 487                                 ccb->ccb_h.status = status;
 488                                 xpt_done(ccb);
 489                                 break;
 490                         }
 491                 }
 492                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 493
 494                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 495                                           sim_links.sle);
 496                         ccb->ccb_h.status = CAM_REQ_INPROG;
 497                         if ((ahd->flags & AHD_TQINFIFO_BLOCKED) != 0)
 498                                 ahd_run_tqinfifo(ahd, /*paused*/FALSE);
 499                         break;
 500                 }
 501
 502                 /*
 503                  * The target_id represents the target we attempt to
 504                  * select.  In target mode, this is the initiator of
 505                  * the original command.
 506                  */
 507                 our_id = target_id;
 508                 target_id = ccb->csio.init_id;
 509                 /* FALLTHROUGH */
 510         }
 511 #endif
 512         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 513         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 514         {
 515                 struct  scb *scb;
 516                 struct  hardware_scb *hscb;
 517                 struct  ahd_initiator_tinfo *tinfo;
 518                 struct  ahd_tmode_tstate *tstate;
 519                 u_int   col_idx;
 520
 521                 if ((ahd->flags & AHD_INITIATORROLE) == 0
 522                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 523                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 524                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 525                         xpt_done(ccb);
 526                         return;
 527                 }
 528
 529                 /*
 530                  * get an scb to use.
 531                  */
 532                 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
 533                                             target_id, &tstate);
 534                 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
 535                  || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
 536                  || ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 537                         col_idx = AHD_NEVER_COL_IDX;
 538                 } else {
 539                         col_idx = AHD_BUILD_COL_IDX(target_id,
 540                                                     ccb->ccb_h.target_lun);
 541                 }
 542                 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
 543
 544                         xpt_freeze_simq(sim, /*count*/1);
 545                         ahd->flags |= AHD_RESOURCE_SHORTAGE;
 546                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 547                         xpt_done(ccb);
 548                         return;
 549                 }
 550
 551                 hscb = scb->hscb;
 552
 553                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 554                           ("start scb(%p)\n", scb));
 555                 scb->io_ctx = ccb;
 556                 /*
 557                  * So we can find the SCB when an abort is requested
 558                  */
 559                 ccb->ccb_h.ccb_scb_ptr = scb;
 560
 561                 /*
 562                  * Put all the arguments for the xfer in the scb
 563                  */
 564                 hscb->control = 0;
 565                 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id);
 566                 hscb->lun = ccb->ccb_h.target_lun;
 567                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 568                         hscb->cdb_len = 0;
 569                         scb->flags |= SCB_DEVICE_RESET;
 570                         hscb->control |= MK_MESSAGE;
 571                         hscb->task_management = SIU_TASKMGMT_LUN_RESET;
 572                         ahd_execute_scb(scb, NULL, 0, 0);
 573                 } else {
 574 #ifdef AHD_TARGET_MODE
 575                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 576                                 struct target_data *tdata;
 577
 578                                 tdata = &hscb->shared_data.tdata;
 579                                 if (ahd->pending_device == lstate)
 580                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 581                                 hscb->control |= TARGET_SCB;
 582                                 tdata->target_phases = 0;
 583                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 584                                         tdata->target_phases |= SPHASE_PENDING;
 585                                         tdata->scsi_status =
 586                                             ccb->csio.scsi_status;
 587                                 }
 588                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 589                                         tdata->target_phases |= NO_DISCONNECT;
 590
 591                                 tdata->initiator_tag =
 592                                     ahd_htole16(ccb->csio.tag_id);
 593                         }
 594 #endif
 595                         hscb->task_management = 0;
 596                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 597                                 hscb->control |= ccb->csio.tag_action;
 598
 599                         ahd_setup_data(ahd, sim, &ccb->csio, scb);
 600                 }
 601                 break;
 602         }
 603 #ifdef AHD_TARGET_MODE
 604         case XPT_NOTIFY_ACK:
 605         case XPT_IMMED_NOTIFY:
 606         {
 607                 struct     ahd_tmode_tstate *tstate;
 608                 struct     ahd_tmode_lstate *lstate;
 609                 cam_status status;
 610
 611                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 612                                              &lstate, TRUE);
 613
 614                 if (status != CAM_REQ_CMP) {
 615                         ccb->ccb_h.status = status;
 616                         xpt_done(ccb);
 617                         break;
 618                 }
 619                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 620                                   sim_links.sle);
 621                 ccb->ccb_h.status = CAM_REQ_INPROG;
 622                 ahd_send_lstate_events(ahd, lstate);
 623                 break;
 624         }
 625         case XPT_EN_LUN:                /* Enable LUN as a target */
 626                 ahd_handle_en_lun(ahd, sim, ccb);
 627                 xpt_done(ccb);
 628                 break;
 629 #endif
 630         case XPT_ABORT:                 /* Abort the specified CCB */
 631         {
 632                 ahd_abort_ccb(ahd, sim, ccb);
 633                 break;
 634         }
 635         case XPT_SET_TRAN_SETTINGS:
 636         {
 637                 ahd_set_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 638                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 639                 xpt_done(ccb);
 640                 break;
 641         }
 642         case XPT_GET_TRAN_SETTINGS:
 643         /* Get default/user set transfer settings for the target */
 644         {
 645                 ahd_get_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 646                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 647                 xpt_done(ccb);
 648                 break;
 649         }
 650         case XPT_CALC_GEOMETRY:
 651         {
 652                 aic_calc_geometry(&ccb->ccg, ahd->flags & AHD_EXTENDED_TRANS_A);
 653                 xpt_done(ccb);
 654                 break;
 655         }
 656         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 657         {
 658                 int  found;
 659
 660                 found = ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
 661                                           /*initiate reset*/TRUE);
 662                 if (bootverbose) {
 663                         xpt_print_path(SIM_PATH(ahd, sim));
 664                         printf("SCSI bus reset delivered. "
 665                                "%d SCBs aborted.\n", found);
 666                 }
 667                 ccb->ccb_h.status = CAM_REQ_CMP;
 668                 xpt_done(ccb);
 669                 break;
 670         }
 671         case XPT_TERM_IO:               /* Terminate the I/O process */
 672                 /* XXX Implement */
 673                 ccb->ccb_h.status = CAM_REQ_INVALID;
 674                 xpt_done(ccb);
 675                 break;
 676         case XPT_PATH_INQ:              /* Path routing inquiry */
 677         {
 678                 struct ccb_pathinq *cpi = &ccb->cpi;
 679
 680                 cpi->version_num = 1; /* XXX??? */
 681                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 682                 if ((ahd->features & AHD_WIDE) != 0)
 683                         cpi->hba_inquiry |= PI_WIDE_16;
 684                 if ((ahd->features & AHD_TARGETMODE) != 0) {
 685                         cpi->target_sprt = PIT_PROCESSOR
 686                                          | PIT_DISCONNECT
 687                                          | PIT_TERM_IO;
 688                 } else {
 689                         cpi->target_sprt = 0;
 690                 }
 691                 cpi->hba_misc = 0;
 692                 cpi->hba_eng_cnt = 0;
 693                 cpi->max_target = (ahd->features & AHD_WIDE) ? 15 : 7;
 694                 cpi->max_lun = AHD_NUM_LUNS_NONPKT - 1;
 695                 cpi->initiator_id = ahd->our_id;
 696                 if ((ahd->flags & AHD_RESET_BUS_A) == 0) {
 697                         cpi->hba_misc |= PIM_NOBUSRESET;
 698                 }
 699                 cpi->bus_id = cam_sim_bus(sim);
 700                 cpi->base_transfer_speed = 3300;
 701                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 702                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 703                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 704                 cpi->unit_number = cam_sim_unit(sim);
 705                 cpi->protocol = PROTO_SCSI;
 706                 cpi->protocol_version = SCSI_REV_2;
 707                 cpi->transport = XPORT_SPI;
 708                 cpi->transport_version = 4;
 709                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST
 710                                                     | SID_SPI_IUS
 711                                                     | SID_SPI_QAS;
 712                 cpi->ccb_h.status = CAM_REQ_CMP;
 713                 xpt_done(ccb);
 714                 break;
 715         }
 716         default:
 717                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 718                 xpt_done(ccb);
 719                 break;
 720         }
 721 }
 722
 723
 724 static void
 725 ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 726                       struct ccb_trans_settings *cts)
 727 {
 728         struct    ahd_devinfo devinfo;
 729         struct    ccb_trans_settings_scsi *scsi;
 730         struct    ccb_trans_settings_spi *spi;
 731         struct    ahd_initiator_tinfo *tinfo;
 732         struct    ahd_tmode_tstate *tstate;
 733         uint16_t *discenable;
 734         uint16_t *tagenable;
 735         u_int     update_type;
 736
 737         scsi = &cts->proto_specific.scsi;
 738         spi = &cts->xport_specific.spi;
 739         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 740                             cts->ccb_h.target_id,
 741                             cts->ccb_h.target_lun,
 742                             SIM_CHANNEL(ahd, sim),
 743                             ROLE_UNKNOWN);
 744         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
 745                                     devinfo.our_scsiid,
 746                                     devinfo.target, &tstate);
 747         update_type = 0;
 748         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 749                 update_type |= AHD_TRANS_GOAL;
 750                 discenable = &tstate->discenable;
 751                 tagenable = &tstate->tagenable;
 752                 tinfo->curr.protocol_version = cts->protocol_version;
 753                 tinfo->curr.transport_version = cts->transport_version;
 754                 tinfo->goal.protocol_version = cts->protocol_version;
 755                 tinfo->goal.transport_version = cts->transport_version;
 756         } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 757                 update_type |= AHD_TRANS_USER;
 758                 discenable = &ahd->user_discenable;
 759                 tagenable = &ahd->user_tagenable;
 760                 tinfo->user.protocol_version = cts->protocol_version;
 761                 tinfo->user.transport_version = cts->transport_version;
 762         } else {
 763                 cts->ccb_h.status = CAM_REQ_INVALID;
 764                 return;
 765         }
 766
 767         if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 768                 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 769                         *discenable |= devinfo.target_mask;
 770                 else
 771                         *discenable &= ~devinfo.target_mask;
 772         }
 773
 774         if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 775                 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 776                         *tagenable |= devinfo.target_mask;
 777                 else
 778                         *tagenable &= ~devinfo.target_mask;
 779         }
 780
 781         if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 782                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
 783                                    &spi->bus_width, ROLE_UNKNOWN);
 784                 ahd_set_width(ahd, &devinfo, spi->bus_width,
 785                               update_type, /*paused*/FALSE);
 786         }
 787
 788         if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 789                 if (update_type == AHD_TRANS_USER)
 790                         spi->ppr_options = tinfo->user.ppr_options;
 791                 else
 792                         spi->ppr_options = tinfo->goal.ppr_options;
 793         }
 794
 795         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 796                 if (update_type == AHD_TRANS_USER)
 797                         spi->sync_offset = tinfo->user.offset;
 798                 else
 799                         spi->sync_offset = tinfo->goal.offset;
 800         }
 801
 802         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 803                 if (update_type == AHD_TRANS_USER)
 804                         spi->sync_period = tinfo->user.period;
 805                 else
 806                         spi->sync_period = tinfo->goal.period;
 807         }
 808
 809         if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 810          || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 811                 u_int   maxsync;
 812
 813                 maxsync = AHD_SYNCRATE_MAX;
 814
 815                 if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 816                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 817
 818                 if ((*discenable & devinfo.target_mask) == 0)
 819                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
 820
 821                 ahd_find_syncrate(ahd, &spi->sync_period,
 822                                   &spi->ppr_options, maxsync);
 823                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
 824                                     spi->sync_period, &spi->sync_offset,
 825                                     spi->bus_width, ROLE_UNKNOWN);
 826
 827                 /* We use a period of 0 to represent async */
 828                 if (spi->sync_offset == 0) {
 829                         spi->sync_period = 0;
 830                         spi->ppr_options = 0;
 831                 }
 832
 833                 ahd_set_syncrate(ahd, &devinfo, spi->sync_period,
 834                                  spi->sync_offset, spi->ppr_options,
 835                                  update_type, /*paused*/FALSE);
 836         }
 837         cts->ccb_h.status = CAM_REQ_CMP;
 838 }
 839
 840 static void
 841 ahd_get_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 842                       struct ccb_trans_settings *cts)
 843 {
 844         struct  ahd_devinfo devinfo;
 845         struct  ccb_trans_settings_scsi *scsi;
 846         struct  ccb_trans_settings_spi *spi;
 847         struct  ahd_initiator_tinfo *targ_info;
 848         struct  ahd_tmode_tstate *tstate;
 849         struct  ahd_transinfo *tinfo;
 850
 851         scsi = &cts->proto_specific.scsi;
 852         spi = &cts->xport_specific.spi;
 853         ahd_compile_devinfo(&devinfo, our_id,
 854                             cts->ccb_h.target_id,
 855                             cts->ccb_h.target_lun,
 856                             channel, ROLE_UNKNOWN);
 857         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
 858                                         devinfo.our_scsiid,
 859                                         devinfo.target, &tstate);
 860
 861         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 862                 tinfo = &targ_info->curr;
 863         else
 864                 tinfo = &targ_info->user;
 865
 866         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 867         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 868         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 869                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
 870                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 871
 872                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
 873                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 874         } else {
 875                 if ((tstate->discenable & devinfo.target_mask) != 0)
 876                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 877
 878                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 879                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 880         }
 881         cts->protocol_version = tinfo->protocol_version;
 882         cts->transport_version = tinfo->transport_version;
 883
 884         spi->sync_period = tinfo->period;
 885         spi->sync_offset = tinfo->offset;
 886         spi->bus_width = tinfo->width;
 887         spi->ppr_options = tinfo->ppr_options;
 888
 889         cts->protocol = PROTO_SCSI;
 890         cts->transport = XPORT_SPI;
 891         spi->valid = CTS_SPI_VALID_SYNC_RATE
 892                    | CTS_SPI_VALID_SYNC_OFFSET
 893                    | CTS_SPI_VALID_BUS_WIDTH
 894                    | CTS_SPI_VALID_PPR_OPTIONS;
 895
 896         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 897                 scsi->valid = CTS_SCSI_VALID_TQ;
 898                 spi->valid |= CTS_SPI_VALID_DISC;
 899         } else {
 900                 scsi->valid = 0;
 901         }
 902
 903         cts->ccb_h.status = CAM_REQ_CMP;
 904 }
 905
 906 static void
 907 ahd_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 908 {
 909         struct ahd_softc *ahd;
 910         struct cam_sim *sim;
 911
 912         sim = (struct cam_sim *)callback_arg;
 913         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 914         switch (code) {
 915         case AC_LOST_DEVICE:
 916         {
 917                 struct  ahd_devinfo devinfo;
 918
 919                 ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 920                                     xpt_path_target_id(path),
 921                                     xpt_path_lun_id(path),
 922                                     SIM_CHANNEL(ahd, sim),
 923                                     ROLE_UNKNOWN);
 924
 925                 /*
 926                  * Revert to async/narrow transfers
 927                  * for the next device.
 928                  */
 929                 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
 930                               AHD_TRANS_GOAL|AHD_TRANS_CUR, /*paused*/FALSE);
 931                 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
 932                                  /*ppr_options*/0, AHD_TRANS_GOAL|AHD_TRANS_CUR,
 933                                  /*paused*/FALSE);
 934                 break;
 935         }
 936         default:
 937                 break;
 938         }
 939 }
 940
 941 static void
 942 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
 943                 int error)
 944 {
 945         struct  scb *scb;
 946         union   ccb *ccb;
 947         struct  ahd_softc *ahd;
 948         struct  ahd_initiator_tinfo *tinfo;
 949         struct  ahd_tmode_tstate *tstate;
 950         u_int   mask;
 951
 952         scb = (struct scb *)arg;
 953         ccb = scb->io_ctx;
 954         ahd = scb->ahd_softc;
 955
 956         if (error != 0) {
 957                 if (error == EFBIG)
 958                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
 959                 else
 960                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
 961                 if (nsegments != 0)
 962                         bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
 963                 ahd_free_scb(ahd, scb);
 964                 xpt_done(ccb);
 965                 return;
 966         }
 967         scb->sg_count = 0;
 968         if (nsegments != 0) {
 969                 void *sg;
 970                 bus_dmasync_op_t op;
 971                 u_int i;
 972
 973                 /* Copy the segments into our SG list */
 974                 for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
 975
 976                         sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
 977                                           dm_segs->ds_len,
 978                                           /*last*/i == 1);
 979                         dm_segs++;
 980                 }
 981
 982                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 983                         op = BUS_DMASYNC_PREREAD;
 984                 else
 985                         op = BUS_DMASYNC_PREWRITE;
 986
 987                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
 988
 989                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 990                         struct target_data *tdata;
 991
 992                         tdata = &scb->hscb->shared_data.tdata;
 993                         tdata->target_phases |= DPHASE_PENDING;
 994                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 995                                 tdata->data_phase = P_DATAOUT;
 996                         else
 997                                 tdata->data_phase = P_DATAIN;
 998                 }
 999         }
1000
1001         /*
1002          * Last time we need to check if this SCB needs to
1003          * be aborted.
1004          */
1005         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
1006                 if (nsegments != 0)
1007                         bus_dmamap_unload(ahd->buffer_dmat,
1008                                           scb->dmamap);
1009                 ahd_free_scb(ahd, scb);
1010                 xpt_done(ccb);
1011                 return;
1012         }
1013
1014         tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
1015                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1016                                     SCSIID_TARGET(ahd, scb->hscb->scsiid),
1017                                     &tstate);
1018
1019         mask = SCB_GET_TARGET_MASK(ahd, scb);
1020
1021         if ((tstate->discenable & mask) != 0
1022          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1023                 scb->hscb->control |= DISCENB;
1024
1025         if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1026                 scb->flags |= SCB_PACKETIZED;
1027                 if (scb->hscb->task_management != 0)
1028                         scb->hscb->control &= ~MK_MESSAGE;
1029         }
1030
1031         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1032          && (tinfo->goal.width != 0
1033           || tinfo->goal.period != 0
1034           || tinfo->goal.ppr_options != 0)) {
1035                 scb->flags |= SCB_NEGOTIATE;
1036                 scb->hscb->control |= MK_MESSAGE;
1037         } else if ((tstate->auto_negotiate & mask) != 0) {
1038                 scb->flags |= SCB_AUTO_NEGOTIATE;
1039                 scb->hscb->control |= MK_MESSAGE;
1040         }
1041
1042         LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1043
1044         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1045
1046         aic_scb_timer_start(scb);
1047
1048         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1049                 /* Define a mapping from our tag to the SCB. */
1050                 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
1051                 ahd_pause(ahd);
1052                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1053                 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
1054                 ahd_unpause(ahd);
1055         } else {
1056                 ahd_queue_scb(ahd, scb);
1057         }
1058
1059 }
1060
1061 static void
1062 ahd_poll(struct cam_sim *sim)
1063 {
1064         ahd_intr(cam_sim_softc(sim));
1065 }
1066
1067 static void
1068 ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
1069                struct ccb_scsiio *csio, struct scb *scb)
1070 {
1071         struct hardware_scb *hscb;
1072         struct ccb_hdr *ccb_h;
1073
1074         hscb = scb->hscb;
1075         ccb_h = &csio->ccb_h;
1076
1077         csio->resid = 0;
1078         csio->sense_resid = 0;
1079         if (ccb_h->func_code == XPT_SCSI_IO) {
1080                 hscb->cdb_len = csio->cdb_len;
1081                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1082
1083                         if (hscb->cdb_len > MAX_CDB_LEN
1084                          && (ccb_h->flags & CAM_CDB_PHYS) == 0) {
1085
1086                                 /*
1087                                  * Should CAM start to support CDB sizes
1088                                  * greater than 16 bytes, we could use
1089                                  * the sense buffer to store the CDB.
1090                                  */
1091                                 aic_set_transaction_status(scb,
1092                                                            CAM_REQ_INVALID);
1093                                 ahd_free_scb(ahd, scb);
1094                                 xpt_done((union ccb *)csio);
1095                                 return;
1096                         }
1097                         if ((ccb_h->flags & CAM_CDB_PHYS) != 0) {
1098                                 hscb->shared_data.idata.cdb_from_host.cdbptr =
1099                                    aic_htole64((uintptr_t)csio->cdb_io.cdb_ptr);
1100                                 hscb->shared_data.idata.cdb_from_host.cdblen =
1101                                    csio->cdb_len;
1102                                 hscb->cdb_len |= SCB_CDB_LEN_PTR;
1103                         } else {
1104                                 memcpy(hscb->shared_data.idata.cdb,
1105                                        csio->cdb_io.cdb_ptr,
1106                                        hscb->cdb_len);
1107                         }
1108                 } else {
1109                         if (hscb->cdb_len > MAX_CDB_LEN) {
1110
1111                                 aic_set_transaction_status(scb,
1112                                                            CAM_REQ_INVALID);
1113                                 ahd_free_scb(ahd, scb);
1114                                 xpt_done((union ccb *)csio);
1115                                 return;
1116                         }
1117                         memcpy(hscb->shared_data.idata.cdb,
1118                                csio->cdb_io.cdb_bytes, hscb->cdb_len);
1119                 }
1120         }
1121
1122         /* Only use S/G if there is a transfer */
1123         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1124                 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
1125                         /* We've been given a pointer to a single buffer */
1126                         if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
1127                                 int s;
1128                                 int error;
1129
1130                                 s = splsoftvm();
1131                                 error = bus_dmamap_load(ahd->buffer_dmat,
1132                                                         scb->dmamap,
1133                                                         csio->data_ptr,
1134                                                         csio->dxfer_len,
1135                                                         ahd_execute_scb,
1136                                                         scb, /*flags*/0);
1137                                 if (error == EINPROGRESS) {
1138                                         /*
1139                                          * So as to maintain ordering,
1140                                          * freeze the controller queue
1141                                          * until our mapping is
1142                                          * returned.
1143                                          */
1144                                         xpt_freeze_simq(sim,
1145                                                         /*count*/1);
1146                                         scb->io_ctx->ccb_h.status |=
1147                                             CAM_RELEASE_SIMQ;
1148                                 }
1149                                 splx(s);
1150                         } else {
1151                                 struct bus_dma_segment seg;
1152
1153                                 /* Pointer to physical buffer */
1154                                 if (csio->dxfer_len > AHD_MAXTRANSFER_SIZE)
1155                                         panic("ahd_setup_data - Transfer size "
1156                                               "larger than can device max");
1157
1158                                 seg.ds_addr =
1159                                     (bus_addr_t)(vm_offset_t)csio->data_ptr;
1160                                 seg.ds_len = csio->dxfer_len;
1161                                 ahd_execute_scb(scb, &seg, 1, 0);
1162                         }
1163                 } else {
1164                         struct bus_dma_segment *segs;
1165
1166                         if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
1167                                 panic("ahd_setup_data - Physical segment "
1168                                       "pointers unsupported");
1169
1170                         if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
1171                                 panic("ahd_setup_data - Virtual segment "
1172                                       "addresses unsupported");
1173
1174                         /* Just use the segments provided */
1175                         segs = (struct bus_dma_segment *)csio->data_ptr;
1176                         ahd_execute_scb(scb, segs, csio->sglist_cnt, 0);
1177                 }
1178         } else {
1179                 ahd_execute_scb(scb, NULL, 0, 0);
1180         }
1181 }
1182
1183 static void
1184 ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
1185 {
1186         union ccb *abort_ccb;
1187
1188         abort_ccb = ccb->cab.abort_ccb;
1189         switch (abort_ccb->ccb_h.func_code) {
1190 #ifdef AHD_TARGET_MODE
1191         case XPT_ACCEPT_TARGET_IO:
1192         case XPT_IMMED_NOTIFY:
1193         case XPT_CONT_TARGET_IO:
1194         {
1195                 struct ahd_tmode_tstate *tstate;
1196                 struct ahd_tmode_lstate *lstate;
1197                 struct ccb_hdr_slist *list;
1198                 cam_status status;
1199
1200                 status = ahd_find_tmode_devs(ahd, sim, abort_ccb, &tstate,
1201                                              &lstate, TRUE);
1202
1203                 if (status != CAM_REQ_CMP) {
1204                         ccb->ccb_h.status = status;
1205                         break;
1206                 }
1207
1208                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1209                         list = &lstate->accept_tios;
1210                 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
1211                         list = &lstate->immed_notifies;
1212                 else
1213                         list = NULL;
1214
1215                 if (list != NULL) {
1216                         struct ccb_hdr *curelm;
1217                         int found;
1218
1219                         curelm = SLIST_FIRST(list);
1220                         found = 0;
1221                         if (curelm == &abort_ccb->ccb_h) {
1222                                 found = 1;
1223                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1224                         } else {
1225                                 while(curelm != NULL) {
1226                                         struct ccb_hdr *nextelm;
1227
1228                                         nextelm =
1229                                             SLIST_NEXT(curelm, sim_links.sle);
1230
1231                                         if (nextelm == &abort_ccb->ccb_h) {
1232                                                 found = 1;
1233                                                 SLIST_NEXT(curelm,
1234                                                            sim_links.sle) =
1235                                                     SLIST_NEXT(nextelm,
1236                                                                sim_links.sle);
1237                                                 break;
1238                                         }
1239                                         curelm = nextelm;
1240                                 }
1241                         }
1242
1243                         if (found) {
1244                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1245                                 xpt_done(abort_ccb);
1246                                 ccb->ccb_h.status = CAM_REQ_CMP;
1247                         } else {
1248                                 xpt_print_path(abort_ccb->ccb_h.path);
1249                                 printf("Not found\n");
1250                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1251                         }
1252                         break;
1253                 }
1254                 /* FALLTHROUGH */
1255         }
1256 #endif
1257         case XPT_SCSI_IO:
1258                 /* XXX Fully implement the hard ones */
1259                 ccb->ccb_h.status = CAM_UA_ABORT;
1260                 break;
1261         default:
1262                 ccb->ccb_h.status = CAM_REQ_INVALID;
1263                 break;
1264         }
1265         xpt_done(ccb);
1266 }
1267
1268 void
1269 ahd_send_async(struct ahd_softc *ahd, char channel, u_int target,
1270                 u_int lun, ac_code code, void *opt_arg)
1271 {
1272         struct  ccb_trans_settings cts;
1273         struct cam_path *path;
1274         void *arg;
1275         int error;
1276
1277         arg = NULL;
1278         error = ahd_create_path(ahd, channel, target, lun, &path);
1279
1280         if (error != CAM_REQ_CMP)
1281                 return;
1282
1283         switch (code) {
1284         case AC_TRANSFER_NEG:
1285         {
1286                 struct  ccb_trans_settings_scsi *scsi;
1287
1288                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1289                 scsi = &cts.proto_specific.scsi;
1290                 cts.ccb_h.path = path;
1291                 cts.ccb_h.target_id = target;
1292                 cts.ccb_h.target_lun = lun;
1293                 ahd_get_tran_settings(ahd, ahd->our_id, channel, &cts);
1294                 arg = &cts;
1295                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1296                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1297                 if (opt_arg == NULL)
1298                         break;
1299                 if (*((ahd_queue_alg *)opt_arg) == AHD_QUEUE_TAGGED)
1300                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1301                 scsi->valid |= CTS_SCSI_VALID_TQ;
1302                 break;
1303         }
1304         case AC_SENT_BDR:
1305         case AC_BUS_RESET:
1306                 break;
1307         default:
1308                 panic("ahd_send_async: Unexpected async event");
1309         }
1310         xpt_async(code, path, arg);
1311         xpt_free_path(path);
1312 }
1313
1314 void
1315 ahd_platform_set_tags(struct ahd_softc *ahd,
1316                       struct ahd_devinfo *devinfo, int enable)
1317 {
1318 }
1319
1320 int
1321 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1322 {
1323         ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF,
1324             M_NOWAIT | M_ZERO);
1325         if (ahd->platform_data == NULL)
1326                 return (ENOMEM);
1327         return (0);
1328 }
1329
1330 void
1331 ahd_platform_free(struct ahd_softc *ahd)
1332 {
1333         struct ahd_platform_data *pdata;
1334
1335         pdata = ahd->platform_data;
1336         if (pdata != NULL) {
1337                 if (pdata->regs[0] != NULL)
1338                         bus_release_resource(ahd->dev_softc,
1339                                              pdata->regs_res_type[0],
1340                                              pdata->regs_res_id[0],
1341                                              pdata->regs[0]);
1342
1343                 if (pdata->regs[1] != NULL)
1344                         bus_release_resource(ahd->dev_softc,
1345                                              pdata->regs_res_type[1],
1346                                              pdata->regs_res_id[1],
1347                                              pdata->regs[1]);
1348
1349                 if (pdata->irq != NULL)
1350                         bus_release_resource(ahd->dev_softc,
1351                                              pdata->irq_res_type,
1352                                              0, pdata->irq);
1353
1354                 if (pdata->sim != NULL) {
1355                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1356                         xpt_free_path(pdata->path);
1357                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1358                         cam_sim_free(pdata->sim, /*free_devq*/TRUE);
1359                 }
1360                 if (pdata->eh != NULL)
1361                         EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
1362                 free(ahd->platform_data, M_DEVBUF);
1363         }
1364 }
1365
1366 int
1367 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
1368 {
1369         /* We don't sort softcs under FreeBSD so report equal always */
1370         return (0);
1371 }
1372
1373 int
1374 ahd_detach(device_t dev)
1375 {
1376         struct ahd_softc *ahd;
1377
1378         device_printf(dev, "detaching device\n");
1379         ahd = device_get_softc(dev);
1380         ahd_lock(ahd);
1381         TAILQ_REMOVE(&ahd_tailq, ahd, links);
1382         ahd_intr_enable(ahd, FALSE);
1383         bus_teardown_intr(dev, ahd->platform_data->irq, ahd->platform_data->ih);
1384         ahd_unlock(ahd);
1385         ahd_free(ahd);
1386         return (0);
1387 }
1388
1389 #if 0
1390 static void
1391 ahd_dump_targcmd(struct target_cmd *cmd)
1392 {
1393         uint8_t *byte;
1394         uint8_t *last_byte;
1395         int i;
1396
1397         byte = &cmd->initiator_channel;
1398         /* Debugging info for received commands */
1399         last_byte = &cmd[1].initiator_channel;
1400
1401         i = 0;
1402         while (byte < last_byte) {
1403                 if (i == 0)
1404                         printf("\t");
1405                 printf("%#x", *byte++);
1406                 i++;
1407                 if (i == 8) {
1408                         printf("\n");
1409                         i = 0;
1410                 } else {
1411                         printf(", ");
1412                 }
1413         }
1414 }
1415 #endif
1416
1417 static int
1418 ahd_modevent(module_t mod, int type, void *data)
1419 {
1420         /* XXX Deal with busy status on unload. */
1421         /* XXX Deal with unknown events */
1422         return 0;
1423 }
1424
1425 static moduledata_t ahd_mod = {
1426         "ahd",
1427         ahd_modevent,
1428         NULL
1429 };
1430
1431 /********************************** DDB Hooks *********************************/
1432 #ifdef DDB
1433 static struct ahd_softc *ahd_ddb_softc;
1434 static int ahd_ddb_paused;
1435 static int ahd_ddb_paused_on_entry;
1436 DB_COMMAND(ahd_sunit, ahd_ddb_sunit)
1437 {
1438         struct ahd_softc *list_ahd;
1439
1440         ahd_ddb_softc = NULL;
1441         TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
1442                 if (list_ahd->unit == addr)
1443                         ahd_ddb_softc = list_ahd;
1444         }
1445         if (ahd_ddb_softc == NULL)
1446                 db_error("No matching softc found!\n");
1447 }
1448
1449 DB_COMMAND(ahd_pause, ahd_ddb_pause)
1450 {
1451         if (ahd_ddb_softc == NULL) {
1452                 db_error("Must set unit with ahd_sunit first!\n");
1453                 return;
1454         }
1455         if (ahd_ddb_paused == 0) {
1456                 ahd_ddb_paused++;
1457                 if (ahd_is_paused(ahd_ddb_softc)) {
1458                         ahd_ddb_paused_on_entry++;
1459                         return;
1460                 }
1461                 ahd_pause(ahd_ddb_softc);
1462         }
1463 }
1464
1465 DB_COMMAND(ahd_unpause, ahd_ddb_unpause)
1466 {
1467         if (ahd_ddb_softc == NULL) {
1468                 db_error("Must set unit with ahd_sunit first!\n");
1469                 return;
1470         }
1471         if (ahd_ddb_paused != 0) {
1472                 ahd_ddb_paused = 0;
1473                 if (ahd_ddb_paused_on_entry)
1474                         return;
1475                 ahd_unpause(ahd_ddb_softc);
1476         } else if (ahd_ddb_paused_on_entry != 0) {
1477                 /* Two unpauses to clear a paused on entry. */
1478                 ahd_ddb_paused_on_entry = 0;
1479                 ahd_unpause(ahd_ddb_softc);
1480         }
1481 }
1482
1483 DB_COMMAND(ahd_in, ahd_ddb_in)
1484 {
1485         int c;
1486         int size;
1487
1488         if (ahd_ddb_softc == NULL) {
1489                 db_error("Must set unit with ahd_sunit first!\n");
1490                 return;
1491         }
1492         if (have_addr == 0)
1493                 return;
1494
1495         size = 1;
1496         while ((c = *modif++) != '\0') {
1497                 switch (c) {
1498                 case 'b':
1499                         size = 1;
1500                         break;
1501                 case 'w':
1502                         size = 2;
1503                         break;
1504                 case 'l':
1505                         size = 4;
1506                 break;
1507                 }
1508         }
1509
1510         if (count <= 0)
1511                 count = 1;
1512         while (--count >= 0) {
1513                 db_printf("%04lx (M)%x: \t", (u_long)addr,
1514                           ahd_inb(ahd_ddb_softc, MODE_PTR));
1515                 switch (size) {
1516                 case 1:
1517                         db_printf("%02x\n", ahd_inb(ahd_ddb_softc, addr));
1518                         break;
1519                 case 2:
1520                         db_printf("%04x\n", ahd_inw(ahd_ddb_softc, addr));
1521                         break;
1522                 case 4:
1523                         db_printf("%08x\n", ahd_inl(ahd_ddb_softc, addr));
1524                         break;
1525                 }
1526         }
1527 }
1528
1529 DB_FUNC(ahd_out, ahd_ddb_out, db_cmd_table, CS_MORE, NULL)
1530 {
1531         db_expr_t old_value;
1532         db_expr_t new_value;
1533         int       size;
1534
1535         if (ahd_ddb_softc == NULL) {
1536                 db_error("Must set unit with ahd_sunit first!\n");
1537                 return;
1538         }
1539
1540         switch (modif[0]) {
1541         case '\0':
1542         case 'b':
1543                 size = 1;
1544                 break;
1545         case 'h':
1546                 size = 2;
1547                 break;
1548         case 'l':
1549                 size = 4;
1550                 break;
1551         default:
1552                 db_error("Unknown size\n");
1553                 return;
1554         }
1555
1556         while (db_expression(&new_value)) {
1557                 switch (size) {
1558                 default:
1559                 case 1:
1560                         old_value = ahd_inb(ahd_ddb_softc, addr);
1561                         ahd_outb(ahd_ddb_softc, addr, new_value);
1562                         break;
1563                 case 2:
1564                         old_value = ahd_inw(ahd_ddb_softc, addr);
1565                         ahd_outw(ahd_ddb_softc, addr, new_value);
1566                         break;
1567                 case 4:
1568                         old_value = ahd_inl(ahd_ddb_softc, addr);
1569                         ahd_outl(ahd_ddb_softc, addr, new_value);
1570                         break;
1571                 }
1572                 db_printf("%04lx (M)%x: \t0x%lx\t=\t0x%lx",
1573                           (u_long)addr, ahd_inb(ahd_ddb_softc, MODE_PTR),
1574                           (u_long)old_value, (u_long)new_value);
1575                 addr += size;
1576         }
1577         db_skip_to_eol();
1578 }
1579
1580 DB_COMMAND(ahd_dump, ahd_ddb_dump)
1581 {
1582         if (ahd_ddb_softc == NULL) {
1583                 db_error("Must set unit with ahd_sunit first!\n");
1584                 return;
1585         }
1586         ahd_dump_card_state(ahd_ddb_softc);
1587 }
1588
1589 #endif
1590
1591
1592 DECLARE_MODULE(ahd, ahd_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1593 MODULE_DEPEND(ahd, cam, 1, 1, 1);
1594 MODULE_VERSION(ahd, 1);