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         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 271         csa.ccb_h.func_code = XPT_SASYNC_CB;
 272         csa.event_enable = AC_LOST_DEVICE;
 273         csa.callback = ahd_async;
 274         csa.callback_arg = sim;
 275         xpt_action((union ccb *)&csa);
 276         count++;
 277
 278 fail:
 279         ahd->platform_data->sim = sim;
 280         ahd->platform_data->path = path;
 281         ahd_unlock(ahd);
 282         if (count != 0) {
 283                 /* We have to wait until after any system dumps... */
 284                 ahd->platform_data->eh =
 285                     EVENTHANDLER_REGISTER(shutdown_final, ahd_shutdown,
 286                                           ahd, SHUTDOWN_PRI_DEFAULT);
 287                 ahd_intr_enable(ahd, TRUE);
 288         }
 289
 290         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                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 352                                 ahd->pending_device = NULL;
 353                         } else {
 354                                 xpt_print_path(ccb->ccb_h.path);
 355                                 printf("Still disconnected\n");
 356                                 ahd_freeze_ccb(ccb);
 357                         }
 358                 }
 359
 360                 if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
 361                         ccb->ccb_h.status |= CAM_REQ_CMP;
 362                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 363                 ahd_free_scb(ahd, scb);
 364                 xpt_done(ccb);
 365                 return;
 366         }
 367 #endif
 368
 369         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
 370                 struct  scb *list_scb;
 371
 372                 ahd->scb_data.recovery_scbs--;
 373
 374                 if (aic_get_transaction_status(scb) == CAM_BDR_SENT
 375                  || aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
 376                         aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
 377
 378                 if (ahd->scb_data.recovery_scbs == 0) {
 379                         /*
 380                          * All recovery actions have completed successfully,
 381                          * so reinstate the timeouts for all other pending
 382                          * commands.
 383                          */
 384                         LIST_FOREACH(list_scb,
 385                                      &ahd->pending_scbs, pending_links) {
 386                                 aic_scb_timer_reset(list_scb,
 387                                                     aic_get_timeout(scb));
 388                         }
 389
 390                         ahd_print_path(ahd, scb);
 391                         printf("no longer in timeout, status = %x\n",
 392                                ccb->ccb_h.status);
 393                 }
 394         }
 395
 396         /* Don't clobber any existing error state */
 397         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
 398                 ccb->ccb_h.status |= CAM_REQ_CMP;
 399         } else if ((scb->flags & SCB_SENSE) != 0) {
 400                 /*
 401                  * We performed autosense retrieval.
 402                  *
 403                  * Zero any sense not transferred by the
 404                  * device.  The SCSI spec mandates that any
 405                  * untransfered data should be assumed to be
 406                  * zero.  Complete the 'bounce' of sense information
 407                  * through buffers accessible via bus-space by
 408                  * copying it into the clients csio.
 409                  */
 410                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 411                 memcpy(&ccb->csio.sense_data,
 412                        ahd_get_sense_buf(ahd, scb),
 413 /* XXX What size do we want to use??? */
 414                         sizeof(ccb->csio.sense_data)
 415                        - ccb->csio.sense_resid);
 416                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 417         } else if ((scb->flags & SCB_PKT_SENSE) != 0) {
 418                 struct scsi_status_iu_header *siu;
 419                 u_int sense_len;
 420
 421                 /*
 422                  * Copy only the sense data into the provided buffer.
 423                  */
 424                 siu = (struct scsi_status_iu_header *)scb->sense_data;
 425                 sense_len = MIN(scsi_4btoul(siu->sense_length),
 426                                 sizeof(ccb->csio.sense_data));
 427                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 428                 memcpy(&ccb->csio.sense_data,
 429                        ahd_get_sense_buf(ahd, scb) + SIU_SENSE_OFFSET(siu),
 430                        sense_len);
 431 #ifdef AHD_DEBUG
 432                 if ((ahd_debug & AHD_SHOW_SENSE) != 0) {
 433                         uint8_t *sense_data = (uint8_t *)&ccb->csio.sense_data;
 434                         u_int i;
 435
 436                         printf("Copied %d bytes of sense data offset %d:",
 437                                sense_len, SIU_SENSE_OFFSET(siu));
 438                         for (i = 0; i < sense_len; i++)
 439                                 printf(" 0x%x", *sense_data++);
 440                         printf("\n");
 441                 }
 442 #endif
 443                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 444         }
 445         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 446         ahd_free_scb(ahd, scb);
 447         xpt_done(ccb);
 448 }
 449
 450 static void
 451 ahd_action(struct cam_sim *sim, union ccb *ccb)
 452 {
 453         struct  ahd_softc *ahd;
 454 #ifdef AHD_TARGET_MODE
 455         struct  ahd_tmode_lstate *lstate;
 456 #endif
 457         u_int   target_id;
 458         u_int   our_id;
 459
 460         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahd_action\n"));
 461
 462         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 463
 464         target_id = ccb->ccb_h.target_id;
 465         our_id = SIM_SCSI_ID(ahd, sim);
 466
 467         switch (ccb->ccb_h.func_code) {
 468         /* Common cases first */
 469 #ifdef AHD_TARGET_MODE
 470         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 471         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 472         {
 473                 struct     ahd_tmode_tstate *tstate;
 474                 cam_status status;
 475
 476                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 477                                              &lstate, TRUE);
 478
 479                 if (status != CAM_REQ_CMP) {
 480                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 481                                 /* Response from the black hole device */
 482                                 tstate = NULL;
 483                                 lstate = ahd->black_hole;
 484                         } else {
 485                                 ccb->ccb_h.status = status;
 486                                 xpt_done(ccb);
 487                                 break;
 488                         }
 489                 }
 490                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 491                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 492                                           sim_links.sle);
 493                         ccb->ccb_h.status = CAM_REQ_INPROG;
 494                         if ((ahd->flags & AHD_TQINFIFO_BLOCKED) != 0)
 495                                 ahd_run_tqinfifo(ahd, /*paused*/FALSE);
 496                         break;
 497                 }
 498
 499                 /*
 500                  * The target_id represents the target we attempt to
 501                  * select.  In target mode, this is the initiator of
 502                  * the original command.
 503                  */
 504                 our_id = target_id;
 505                 target_id = ccb->csio.init_id;
 506                 /* FALLTHROUGH */
 507         }
 508 #endif
 509         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 510         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 511         {
 512                 struct  scb *scb;
 513                 struct  hardware_scb *hscb;
 514                 struct  ahd_initiator_tinfo *tinfo;
 515                 struct  ahd_tmode_tstate *tstate;
 516                 u_int   col_idx;
 517
 518                 if ((ahd->flags & AHD_INITIATORROLE) == 0
 519                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 520                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 521                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 522                         xpt_done(ccb);
 523                         return;
 524                 }
 525
 526                 /*
 527                  * get an scb to use.
 528                  */
 529                 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
 530                                             target_id, &tstate);
 531                 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
 532                  || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
 533                  || ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 534                         col_idx = AHD_NEVER_COL_IDX;
 535                 } else {
 536                         col_idx = AHD_BUILD_COL_IDX(target_id,
 537                                                     ccb->ccb_h.target_lun);
 538                 }
 539                 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
 540                         xpt_freeze_simq(sim, /*count*/1);
 541                         ahd->flags |= AHD_RESOURCE_SHORTAGE;
 542                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 543                         xpt_done(ccb);
 544                         return;
 545                 }
 546
 547                 hscb = scb->hscb;
 548
 549                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 550                           ("start scb(%p)\n", scb));
 551                 scb->io_ctx = ccb;
 552                 /*
 553                  * So we can find the SCB when an abort is requested
 554                  */
 555                 ccb->ccb_h.ccb_scb_ptr = scb;
 556
 557                 /*
 558                  * Put all the arguments for the xfer in the scb
 559                  */
 560                 hscb->control = 0;
 561                 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id);
 562                 hscb->lun = ccb->ccb_h.target_lun;
 563                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 564                         hscb->cdb_len = 0;
 565                         scb->flags |= SCB_DEVICE_RESET;
 566                         hscb->control |= MK_MESSAGE;
 567                         hscb->task_management = SIU_TASKMGMT_LUN_RESET;
 568                         ahd_execute_scb(scb, NULL, 0, 0);
 569                 } else {
 570 #ifdef AHD_TARGET_MODE
 571                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 572                                 struct target_data *tdata;
 573
 574                                 tdata = &hscb->shared_data.tdata;
 575                                 if (ahd->pending_device == lstate)
 576                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 577                                 hscb->control |= TARGET_SCB;
 578                                 tdata->target_phases = 0;
 579                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 580                                         tdata->target_phases |= SPHASE_PENDING;
 581                                         tdata->scsi_status =
 582                                             ccb->csio.scsi_status;
 583                                 }
 584                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 585                                         tdata->target_phases |= NO_DISCONNECT;
 586
 587                                 tdata->initiator_tag =
 588                                     ahd_htole16(ccb->csio.tag_id);
 589                         }
 590 #endif
 591                         hscb->task_management = 0;
 592                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 593                                 hscb->control |= ccb->csio.tag_action;
 594
 595                         ahd_setup_data(ahd, sim, &ccb->csio, scb);
 596                 }
 597                 break;
 598         }
 599 #ifdef AHD_TARGET_MODE
 600         case XPT_NOTIFY_ACKNOWLEDGE:
 601         case XPT_IMMEDIATE_NOTIFY:
 602         {
 603                 struct     ahd_tmode_tstate *tstate;
 604                 struct     ahd_tmode_lstate *lstate;
 605                 cam_status status;
 606
 607                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 608                                              &lstate, TRUE);
 609
 610                 if (status != CAM_REQ_CMP) {
 611                         ccb->ccb_h.status = status;
 612                         xpt_done(ccb);
 613                         break;
 614                 }
 615                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 616                                   sim_links.sle);
 617                 ccb->ccb_h.status = CAM_REQ_INPROG;
 618                 ahd_send_lstate_events(ahd, lstate);
 619                 break;
 620         }
 621         case XPT_EN_LUN:                /* Enable LUN as a target */
 622                 ahd_handle_en_lun(ahd, sim, ccb);
 623                 xpt_done(ccb);
 624                 break;
 625 #endif
 626         case XPT_ABORT:                 /* Abort the specified CCB */
 627         {
 628                 ahd_abort_ccb(ahd, sim, ccb);
 629                 break;
 630         }
 631         case XPT_SET_TRAN_SETTINGS:
 632         {
 633                 ahd_set_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 634                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 635                 xpt_done(ccb);
 636                 break;
 637         }
 638         case XPT_GET_TRAN_SETTINGS:
 639         /* Get default/user set transfer settings for the target */
 640         {
 641                 ahd_get_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 642                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 643                 xpt_done(ccb);
 644                 break;
 645         }
 646         case XPT_CALC_GEOMETRY:
 647         {
 648                 aic_calc_geometry(&ccb->ccg, ahd->flags & AHD_EXTENDED_TRANS_A);
 649                 xpt_done(ccb);
 650                 break;
 651         }
 652         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 653         {
 654                 int  found;
 655
 656                 found = ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
 657                                           /*initiate reset*/TRUE);
 658                 if (bootverbose) {
 659                         xpt_print_path(SIM_PATH(ahd, sim));
 660                         printf("SCSI bus reset delivered. "
 661                                "%d SCBs aborted.\n", found);
 662                 }
 663                 ccb->ccb_h.status = CAM_REQ_CMP;
 664                 xpt_done(ccb);
 665                 break;
 666         }
 667         case XPT_TERM_IO:               /* Terminate the I/O process */
 668                 /* XXX Implement */
 669                 ccb->ccb_h.status = CAM_REQ_INVALID;
 670                 xpt_done(ccb);
 671                 break;
 672         case XPT_PATH_INQ:              /* Path routing inquiry */
 673         {
 674                 struct ccb_pathinq *cpi = &ccb->cpi;
 675
 676                 cpi->version_num = 1; /* XXX??? */
 677                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 678                 if ((ahd->features & AHD_WIDE) != 0)
 679                         cpi->hba_inquiry |= PI_WIDE_16;
 680                 if ((ahd->features & AHD_TARGETMODE) != 0) {
 681                         cpi->target_sprt = PIT_PROCESSOR
 682                                          | PIT_DISCONNECT
 683                                          | PIT_TERM_IO;
 684                 } else {
 685                         cpi->target_sprt = 0;
 686                 }
 687                 cpi->hba_misc = 0;
 688                 cpi->hba_eng_cnt = 0;
 689                 cpi->max_target = (ahd->features & AHD_WIDE) ? 15 : 7;
 690                 cpi->max_lun = AHD_NUM_LUNS_NONPKT - 1;
 691                 cpi->initiator_id = ahd->our_id;
 692                 if ((ahd->flags & AHD_RESET_BUS_A) == 0) {
 693                         cpi->hba_misc |= PIM_NOBUSRESET;
 694                 }
 695                 cpi->bus_id = cam_sim_bus(sim);
 696                 cpi->base_transfer_speed = 3300;
 697                 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 698                 strlcpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 699                 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 700                 cpi->unit_number = cam_sim_unit(sim);
 701                 cpi->protocol = PROTO_SCSI;
 702                 cpi->protocol_version = SCSI_REV_2;
 703                 cpi->transport = XPORT_SPI;
 704                 cpi->transport_version = 4;
 705                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST
 706                                                     | SID_SPI_IUS
 707                                                     | SID_SPI_QAS;
 708                 cpi->ccb_h.status = CAM_REQ_CMP;
 709                 xpt_done(ccb);
 710                 break;
 711         }
 712         default:
 713                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 714                 xpt_done(ccb);
 715                 break;
 716         }
 717 }
 718
 719 static void
 720 ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 721                       struct ccb_trans_settings *cts)
 722 {
 723         struct    ahd_devinfo devinfo;
 724         struct    ccb_trans_settings_scsi *scsi;
 725         struct    ccb_trans_settings_spi *spi;
 726         struct    ahd_initiator_tinfo *tinfo;
 727         struct    ahd_tmode_tstate *tstate;
 728         uint16_t *discenable;
 729         uint16_t *tagenable;
 730         u_int     update_type;
 731
 732         scsi = &cts->proto_specific.scsi;
 733         spi = &cts->xport_specific.spi;
 734         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 735                             cts->ccb_h.target_id,
 736                             cts->ccb_h.target_lun,
 737                             SIM_CHANNEL(ahd, sim),
 738                             ROLE_UNKNOWN);
 739         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
 740                                     devinfo.our_scsiid,
 741                                     devinfo.target, &tstate);
 742         update_type = 0;
 743         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 744                 update_type |= AHD_TRANS_GOAL;
 745                 discenable = &tstate->discenable;
 746                 tagenable = &tstate->tagenable;
 747                 tinfo->curr.protocol_version = cts->protocol_version;
 748                 tinfo->curr.transport_version = cts->transport_version;
 749                 tinfo->goal.protocol_version = cts->protocol_version;
 750                 tinfo->goal.transport_version = cts->transport_version;
 751         } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 752                 update_type |= AHD_TRANS_USER;
 753                 discenable = &ahd->user_discenable;
 754                 tagenable = &ahd->user_tagenable;
 755                 tinfo->user.protocol_version = cts->protocol_version;
 756                 tinfo->user.transport_version = cts->transport_version;
 757         } else {
 758                 cts->ccb_h.status = CAM_REQ_INVALID;
 759                 return;
 760         }
 761
 762         if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 763                 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 764                         *discenable |= devinfo.target_mask;
 765                 else
 766                         *discenable &= ~devinfo.target_mask;
 767         }
 768
 769         if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 770                 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 771                         *tagenable |= devinfo.target_mask;
 772                 else
 773                         *tagenable &= ~devinfo.target_mask;
 774         }
 775
 776         if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 777                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
 778                                    &spi->bus_width, ROLE_UNKNOWN);
 779                 ahd_set_width(ahd, &devinfo, spi->bus_width,
 780                               update_type, /*paused*/FALSE);
 781         }
 782
 783         if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 784                 if (update_type == AHD_TRANS_USER)
 785                         spi->ppr_options = tinfo->user.ppr_options;
 786                 else
 787                         spi->ppr_options = tinfo->goal.ppr_options;
 788         }
 789
 790         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 791                 if (update_type == AHD_TRANS_USER)
 792                         spi->sync_offset = tinfo->user.offset;
 793                 else
 794                         spi->sync_offset = tinfo->goal.offset;
 795         }
 796
 797         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 798                 if (update_type == AHD_TRANS_USER)
 799                         spi->sync_period = tinfo->user.period;
 800                 else
 801                         spi->sync_period = tinfo->goal.period;
 802         }
 803
 804         if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 805          || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 806                 u_int   maxsync;
 807
 808                 maxsync = AHD_SYNCRATE_MAX;
 809
 810                 if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 811                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 812
 813                 if ((*discenable & devinfo.target_mask) == 0)
 814                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
 815
 816                 ahd_find_syncrate(ahd, &spi->sync_period,
 817                                   &spi->ppr_options, maxsync);
 818                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
 819                                     spi->sync_period, &spi->sync_offset,
 820                                     spi->bus_width, ROLE_UNKNOWN);
 821
 822                 /* We use a period of 0 to represent async */
 823                 if (spi->sync_offset == 0) {
 824                         spi->sync_period = 0;
 825                         spi->ppr_options = 0;
 826                 }
 827
 828                 ahd_set_syncrate(ahd, &devinfo, spi->sync_period,
 829                                  spi->sync_offset, spi->ppr_options,
 830                                  update_type, /*paused*/FALSE);
 831         }
 832         cts->ccb_h.status = CAM_REQ_CMP;
 833 }
 834
 835 static void
 836 ahd_get_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 837                       struct ccb_trans_settings *cts)
 838 {
 839         struct  ahd_devinfo devinfo;
 840         struct  ccb_trans_settings_scsi *scsi;
 841         struct  ccb_trans_settings_spi *spi;
 842         struct  ahd_initiator_tinfo *targ_info;
 843         struct  ahd_tmode_tstate *tstate;
 844         struct  ahd_transinfo *tinfo;
 845
 846         scsi = &cts->proto_specific.scsi;
 847         spi = &cts->xport_specific.spi;
 848         ahd_compile_devinfo(&devinfo, our_id,
 849                             cts->ccb_h.target_id,
 850                             cts->ccb_h.target_lun,
 851                             channel, ROLE_UNKNOWN);
 852         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
 853                                         devinfo.our_scsiid,
 854                                         devinfo.target, &tstate);
 855
 856         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 857                 tinfo = &targ_info->curr;
 858         else
 859                 tinfo = &targ_info->user;
 860
 861         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 862         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 863         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 864                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
 865                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 866
 867                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
 868                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 869         } else {
 870                 if ((tstate->discenable & devinfo.target_mask) != 0)
 871                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 872
 873                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 874                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 875         }
 876         cts->protocol_version = tinfo->protocol_version;
 877         cts->transport_version = tinfo->transport_version;
 878
 879         spi->sync_period = tinfo->period;
 880         spi->sync_offset = tinfo->offset;
 881         spi->bus_width = tinfo->width;
 882         spi->ppr_options = tinfo->ppr_options;
 883
 884         cts->protocol = PROTO_SCSI;
 885         cts->transport = XPORT_SPI;
 886         spi->valid = CTS_SPI_VALID_SYNC_RATE
 887                    | CTS_SPI_VALID_SYNC_OFFSET
 888                    | CTS_SPI_VALID_BUS_WIDTH
 889                    | CTS_SPI_VALID_PPR_OPTIONS;
 890
 891         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 892                 scsi->valid = CTS_SCSI_VALID_TQ;
 893                 spi->valid |= CTS_SPI_VALID_DISC;
 894         } else {
 895                 scsi->valid = 0;
 896         }
 897
 898         cts->ccb_h.status = CAM_REQ_CMP;
 899 }
 900
 901 static void
 902 ahd_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 903 {
 904         struct ahd_softc *ahd;
 905         struct cam_sim *sim;
 906
 907         sim = (struct cam_sim *)callback_arg;
 908         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 909         switch (code) {
 910         case AC_LOST_DEVICE:
 911         {
 912                 struct  ahd_devinfo devinfo;
 913
 914                 ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 915                                     xpt_path_target_id(path),
 916                                     xpt_path_lun_id(path),
 917                                     SIM_CHANNEL(ahd, sim),
 918                                     ROLE_UNKNOWN);
 919
 920                 /*
 921                  * Revert to async/narrow transfers
 922                  * for the next device.
 923                  */
 924                 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
 925                               AHD_TRANS_GOAL|AHD_TRANS_CUR, /*paused*/FALSE);
 926                 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
 927                                  /*ppr_options*/0, AHD_TRANS_GOAL|AHD_TRANS_CUR,
 928                                  /*paused*/FALSE);
 929                 break;
 930         }
 931         default:
 932                 break;
 933         }
 934 }
 935
 936 static void
 937 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
 938                 int error)
 939 {
 940         struct  scb *scb;
 941         union   ccb *ccb;
 942         struct  ahd_softc *ahd;
 943         struct  ahd_initiator_tinfo *tinfo;
 944         struct  ahd_tmode_tstate *tstate;
 945         u_int   mask;
 946
 947         scb = (struct scb *)arg;
 948         ccb = scb->io_ctx;
 949         ahd = scb->ahd_softc;
 950
 951         if (error != 0) {
 952                 if (error == EFBIG)
 953                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
 954                 else
 955                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
 956                 if (nsegments != 0)
 957                         bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
 958                 ahd_free_scb(ahd, scb);
 959                 xpt_done(ccb);
 960                 return;
 961         }
 962         scb->sg_count = 0;
 963         if (nsegments != 0) {
 964                 void *sg;
 965                 bus_dmasync_op_t op;
 966                 u_int i;
 967
 968                 /* Copy the segments into our SG list */
 969                 for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
 970                         sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
 971                                           dm_segs->ds_len,
 972                                           /*last*/i == 1);
 973                         dm_segs++;
 974                 }
 975
 976                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 977                         op = BUS_DMASYNC_PREREAD;
 978                 else
 979                         op = BUS_DMASYNC_PREWRITE;
 980
 981                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
 982
 983                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 984                         struct target_data *tdata;
 985
 986                         tdata = &scb->hscb->shared_data.tdata;
 987                         tdata->target_phases |= DPHASE_PENDING;
 988                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
 989                                 tdata->data_phase = P_DATAOUT;
 990                         else
 991                                 tdata->data_phase = P_DATAIN;
 992                 }
 993         }
 994
 995         /*
 996          * Last time we need to check if this SCB needs to
 997          * be aborted.
 998          */
 999         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
1000                 if (nsegments != 0)
1001                         bus_dmamap_unload(ahd->buffer_dmat,
1002                                           scb->dmamap);
1003                 ahd_free_scb(ahd, scb);
1004                 xpt_done(ccb);
1005                 return;
1006         }
1007
1008         tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
1009                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1010                                     SCSIID_TARGET(ahd, scb->hscb->scsiid),
1011                                     &tstate);
1012
1013         mask = SCB_GET_TARGET_MASK(ahd, scb);
1014
1015         if ((tstate->discenable & mask) != 0
1016          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1017                 scb->hscb->control |= DISCENB;
1018
1019         if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1020                 scb->flags |= SCB_PACKETIZED;
1021                 if (scb->hscb->task_management != 0)
1022                         scb->hscb->control &= ~MK_MESSAGE;
1023         }
1024
1025         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1026          && (tinfo->goal.width != 0
1027           || tinfo->goal.period != 0
1028           || tinfo->goal.ppr_options != 0)) {
1029                 scb->flags |= SCB_NEGOTIATE;
1030                 scb->hscb->control |= MK_MESSAGE;
1031         } else if ((tstate->auto_negotiate & mask) != 0) {
1032                 scb->flags |= SCB_AUTO_NEGOTIATE;
1033                 scb->hscb->control |= MK_MESSAGE;
1034         }
1035
1036         LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1037
1038         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1039
1040         aic_scb_timer_start(scb);
1041
1042         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1043                 /* Define a mapping from our tag to the SCB. */
1044                 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
1045                 ahd_pause(ahd);
1046                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1047                 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
1048                 ahd_unpause(ahd);
1049         } else {
1050                 ahd_queue_scb(ahd, scb);
1051         }
1052
1053 }
1054
1055 static void
1056 ahd_poll(struct cam_sim *sim)
1057 {
1058         ahd_intr(cam_sim_softc(sim));
1059 }
1060
1061 static void
1062 ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
1063                struct ccb_scsiio *csio, struct scb *scb)
1064 {
1065         struct hardware_scb *hscb;
1066         struct ccb_hdr *ccb_h;
1067         int error;
1068
1069         hscb = scb->hscb;
1070         ccb_h = &csio->ccb_h;
1071
1072         csio->resid = 0;
1073         csio->sense_resid = 0;
1074         if (ccb_h->func_code == XPT_SCSI_IO) {
1075                 hscb->cdb_len = csio->cdb_len;
1076                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1077                         if (hscb->cdb_len > MAX_CDB_LEN
1078                          && (ccb_h->flags & CAM_CDB_PHYS) == 0) {
1079                                 /*
1080                                  * Should CAM start to support CDB sizes
1081                                  * greater than 16 bytes, we could use
1082                                  * the sense buffer to store the CDB.
1083                                  */
1084                                 aic_set_transaction_status(scb,
1085                                                            CAM_REQ_INVALID);
1086                                 ahd_free_scb(ahd, scb);
1087                                 xpt_done((union ccb *)csio);
1088                                 return;
1089                         }
1090                         if ((ccb_h->flags & CAM_CDB_PHYS) != 0) {
1091                                 hscb->shared_data.idata.cdb_from_host.cdbptr =
1092                                    aic_htole64((uintptr_t)csio->cdb_io.cdb_ptr);
1093                                 hscb->shared_data.idata.cdb_from_host.cdblen =
1094                                    csio->cdb_len;
1095                                 hscb->cdb_len |= SCB_CDB_LEN_PTR;
1096                         } else {
1097                                 memcpy(hscb->shared_data.idata.cdb,
1098                                        csio->cdb_io.cdb_ptr,
1099                                        hscb->cdb_len);
1100                         }
1101                 } else {
1102                         if (hscb->cdb_len > MAX_CDB_LEN) {
1103                                 aic_set_transaction_status(scb,
1104                                                            CAM_REQ_INVALID);
1105                                 ahd_free_scb(ahd, scb);
1106                                 xpt_done((union ccb *)csio);
1107                                 return;
1108                         }
1109                         memcpy(hscb->shared_data.idata.cdb,
1110                                csio->cdb_io.cdb_bytes, hscb->cdb_len);
1111                 }
1112         }
1113
1114         error = bus_dmamap_load_ccb(ahd->buffer_dmat,
1115                                     scb->dmamap,
1116                                     (union ccb *)csio,
1117                                     ahd_execute_scb,
1118                                     scb, /*flags*/0);
1119         if (error == EINPROGRESS) {
1120                 /*
1121                  * So as to maintain ordering, freeze the controller queue
1122                  * until our mapping is returned.
1123                  */
1124                 xpt_freeze_simq(sim, /*count*/1);
1125                 scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
1126         }
1127 }
1128
1129 static void
1130 ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
1131 {
1132         union ccb *abort_ccb;
1133
1134         abort_ccb = ccb->cab.abort_ccb;
1135         switch (abort_ccb->ccb_h.func_code) {
1136 #ifdef AHD_TARGET_MODE
1137         case XPT_ACCEPT_TARGET_IO:
1138         case XPT_IMMEDIATE_NOTIFY:
1139         case XPT_CONT_TARGET_IO:
1140         {
1141                 struct ahd_tmode_tstate *tstate;
1142                 struct ahd_tmode_lstate *lstate;
1143                 struct ccb_hdr_slist *list;
1144                 cam_status status;
1145
1146                 status = ahd_find_tmode_devs(ahd, sim, abort_ccb, &tstate,
1147                                              &lstate, TRUE);
1148
1149                 if (status != CAM_REQ_CMP) {
1150                         ccb->ccb_h.status = status;
1151                         break;
1152                 }
1153
1154                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1155                         list = &lstate->accept_tios;
1156                 else if (abort_ccb->ccb_h.func_code == XPT_IMMEDIATE_NOTIFY)
1157                         list = &lstate->immed_notifies;
1158                 else
1159                         list = NULL;
1160
1161                 if (list != NULL) {
1162                         struct ccb_hdr *curelm;
1163                         int found;
1164
1165                         curelm = SLIST_FIRST(list);
1166                         found = 0;
1167                         if (curelm == &abort_ccb->ccb_h) {
1168                                 found = 1;
1169                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1170                         } else {
1171                                 while(curelm != NULL) {
1172                                         struct ccb_hdr *nextelm;
1173
1174                                         nextelm =
1175                                             SLIST_NEXT(curelm, sim_links.sle);
1176
1177                                         if (nextelm == &abort_ccb->ccb_h) {
1178                                                 found = 1;
1179                                                 SLIST_NEXT(curelm,
1180                                                            sim_links.sle) =
1181                                                     SLIST_NEXT(nextelm,
1182                                                                sim_links.sle);
1183                                                 break;
1184                                         }
1185                                         curelm = nextelm;
1186                                 }
1187                         }
1188
1189                         if (found) {
1190                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1191                                 xpt_done(abort_ccb);
1192                                 ccb->ccb_h.status = CAM_REQ_CMP;
1193                         } else {
1194                                 xpt_print_path(abort_ccb->ccb_h.path);
1195                                 printf("Not found\n");
1196                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1197                         }
1198                         break;
1199                 }
1200                 /* FALLTHROUGH */
1201         }
1202 #endif
1203         case XPT_SCSI_IO:
1204                 /* XXX Fully implement the hard ones */
1205                 ccb->ccb_h.status = CAM_UA_ABORT;
1206                 break;
1207         default:
1208                 ccb->ccb_h.status = CAM_REQ_INVALID;
1209                 break;
1210         }
1211         xpt_done(ccb);
1212 }
1213
1214 void
1215 ahd_send_async(struct ahd_softc *ahd, char channel, u_int target,
1216                 u_int lun, ac_code code, void *opt_arg)
1217 {
1218         struct  ccb_trans_settings cts;
1219         struct cam_path *path;
1220         void *arg;
1221         int error;
1222
1223         arg = NULL;
1224         error = ahd_create_path(ahd, channel, target, lun, &path);
1225
1226         if (error != CAM_REQ_CMP)
1227                 return;
1228
1229         switch (code) {
1230         case AC_TRANSFER_NEG:
1231         {
1232                 struct  ccb_trans_settings_scsi *scsi;
1233
1234                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1235                 scsi = &cts.proto_specific.scsi;
1236                 cts.ccb_h.path = path;
1237                 cts.ccb_h.target_id = target;
1238                 cts.ccb_h.target_lun = lun;
1239                 ahd_get_tran_settings(ahd, ahd->our_id, channel, &cts);
1240                 arg = &cts;
1241                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1242                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1243                 if (opt_arg == NULL)
1244                         break;
1245                 if (*((ahd_queue_alg *)opt_arg) == AHD_QUEUE_TAGGED)
1246                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1247                 scsi->valid |= CTS_SCSI_VALID_TQ;
1248                 break;
1249         }
1250         case AC_SENT_BDR:
1251         case AC_BUS_RESET:
1252                 break;
1253         default:
1254                 panic("ahd_send_async: Unexpected async event");
1255         }
1256         xpt_async(code, path, arg);
1257         xpt_free_path(path);
1258 }
1259
1260 void
1261 ahd_platform_set_tags(struct ahd_softc *ahd,
1262                       struct ahd_devinfo *devinfo, int enable)
1263 {
1264 }
1265
1266 int
1267 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1268 {
1269         ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF,
1270             M_NOWAIT | M_ZERO);
1271         if (ahd->platform_data == NULL)
1272                 return (ENOMEM);
1273         return (0);
1274 }
1275
1276 void
1277 ahd_platform_free(struct ahd_softc *ahd)
1278 {
1279         struct ahd_platform_data *pdata;
1280
1281         pdata = ahd->platform_data;
1282         if (pdata != NULL) {
1283                 if (pdata->regs[0] != NULL)
1284                         bus_release_resource(ahd->dev_softc,
1285                                              pdata->regs_res_type[0],
1286                                              pdata->regs_res_id[0],
1287                                              pdata->regs[0]);
1288
1289                 if (pdata->regs[1] != NULL)
1290                         bus_release_resource(ahd->dev_softc,
1291                                              pdata->regs_res_type[1],
1292                                              pdata->regs_res_id[1],
1293                                              pdata->regs[1]);
1294
1295                 if (pdata->irq != NULL)
1296                         bus_release_resource(ahd->dev_softc,
1297                                              pdata->irq_res_type,
1298                                              0, pdata->irq);
1299
1300                 if (pdata->sim != NULL) {
1301                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1302                         xpt_free_path(pdata->path);
1303                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1304                         cam_sim_free(pdata->sim, /*free_devq*/TRUE);
1305                 }
1306                 if (pdata->eh != NULL)
1307                         EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
1308                 free(ahd->platform_data, M_DEVBUF);
1309         }
1310 }
1311
1312 int
1313 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
1314 {
1315         /* We don't sort softcs under FreeBSD so report equal always */
1316         return (0);
1317 }
1318
1319 int
1320 ahd_detach(device_t dev)
1321 {
1322         struct ahd_softc *ahd;
1323
1324         device_printf(dev, "detaching device\n");
1325         ahd = device_get_softc(dev);
1326         ahd_lock(ahd);
1327         TAILQ_REMOVE(&ahd_tailq, ahd, links);
1328         ahd_intr_enable(ahd, FALSE);
1329         bus_teardown_intr(dev, ahd->platform_data->irq, ahd->platform_data->ih);
1330         ahd_unlock(ahd);
1331         ahd_free(ahd);
1332         return (0);
1333 }
1334
1335 #if 0
1336 static void
1337 ahd_dump_targcmd(struct target_cmd *cmd)
1338 {
1339         uint8_t *byte;
1340         uint8_t *last_byte;
1341         int i;
1342
1343         byte = &cmd->initiator_channel;
1344         /* Debugging info for received commands */
1345         last_byte = &cmd[1].initiator_channel;
1346
1347         i = 0;
1348         while (byte < last_byte) {
1349                 if (i == 0)
1350                         printf("\t");
1351                 printf("%#x", *byte++);
1352                 i++;
1353                 if (i == 8) {
1354                         printf("\n");
1355                         i = 0;
1356                 } else {
1357                         printf(", ");
1358                 }
1359         }
1360 }
1361 #endif
1362
1363 static int
1364 ahd_modevent(module_t mod, int type, void *data)
1365 {
1366         /* XXX Deal with busy status on unload. */
1367         /* XXX Deal with unknown events */
1368         return 0;
1369 }
1370
1371 static moduledata_t ahd_mod = {
1372         "ahd",
1373         ahd_modevent,
1374         NULL
1375 };
1376
1377 /********************************** DDB Hooks *********************************/
1378 #ifdef DDB
1379 static struct ahd_softc *ahd_ddb_softc;
1380 static int ahd_ddb_paused;
1381 static int ahd_ddb_paused_on_entry;
1382 DB_COMMAND(ahd_sunit, ahd_ddb_sunit)
1383 {
1384         struct ahd_softc *list_ahd;
1385
1386         ahd_ddb_softc = NULL;
1387         TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
1388                 if (list_ahd->unit == addr)
1389                         ahd_ddb_softc = list_ahd;
1390         }
1391         if (ahd_ddb_softc == NULL)
1392                 db_error("No matching softc found!\n");
1393 }
1394
1395 DB_COMMAND(ahd_pause, ahd_ddb_pause)
1396 {
1397         if (ahd_ddb_softc == NULL) {
1398                 db_error("Must set unit with ahd_sunit first!\n");
1399                 return;
1400         }
1401         if (ahd_ddb_paused == 0) {
1402                 ahd_ddb_paused++;
1403                 if (ahd_is_paused(ahd_ddb_softc)) {
1404                         ahd_ddb_paused_on_entry++;
1405                         return;
1406                 }
1407                 ahd_pause(ahd_ddb_softc);
1408         }
1409 }
1410
1411 DB_COMMAND(ahd_unpause, ahd_ddb_unpause)
1412 {
1413         if (ahd_ddb_softc == NULL) {
1414                 db_error("Must set unit with ahd_sunit first!\n");
1415                 return;
1416         }
1417         if (ahd_ddb_paused != 0) {
1418                 ahd_ddb_paused = 0;
1419                 if (ahd_ddb_paused_on_entry)
1420                         return;
1421                 ahd_unpause(ahd_ddb_softc);
1422         } else if (ahd_ddb_paused_on_entry != 0) {
1423                 /* Two unpauses to clear a paused on entry. */
1424                 ahd_ddb_paused_on_entry = 0;
1425                 ahd_unpause(ahd_ddb_softc);
1426         }
1427 }
1428
1429 DB_COMMAND(ahd_in, ahd_ddb_in)
1430 {
1431         int c;
1432         int size;
1433
1434         if (ahd_ddb_softc == NULL) {
1435                 db_error("Must set unit with ahd_sunit first!\n");
1436                 return;
1437         }
1438         if (have_addr == 0)
1439                 return;
1440
1441         size = 1;
1442         while ((c = *modif++) != '\0') {
1443                 switch (c) {
1444                 case 'b':
1445                         size = 1;
1446                         break;
1447                 case 'w':
1448                         size = 2;
1449                         break;
1450                 case 'l':
1451                         size = 4;
1452                 break;
1453                 }
1454         }
1455
1456         if (count <= 0)
1457                 count = 1;
1458         while (--count >= 0) {
1459                 db_printf("%04lx (M)%x: \t", (u_long)addr,
1460                           ahd_inb(ahd_ddb_softc, MODE_PTR));
1461                 switch (size) {
1462                 case 1:
1463                         db_printf("%02x\n", ahd_inb(ahd_ddb_softc, addr));
1464                         break;
1465                 case 2:
1466                         db_printf("%04x\n", ahd_inw(ahd_ddb_softc, addr));
1467                         break;
1468                 case 4:
1469                         db_printf("%08x\n", ahd_inl(ahd_ddb_softc, addr));
1470                         break;
1471                 }
1472         }
1473 }
1474
1475 DB_FUNC(ahd_out, ahd_ddb_out, db_cmd_table, CS_MORE, NULL)
1476 {
1477         db_expr_t old_value;
1478         db_expr_t new_value;
1479         int       size;
1480
1481         if (ahd_ddb_softc == NULL) {
1482                 db_error("Must set unit with ahd_sunit first!\n");
1483                 return;
1484         }
1485
1486         switch (modif[0]) {
1487         case '\0':
1488         case 'b':
1489                 size = 1;
1490                 break;
1491         case 'h':
1492                 size = 2;
1493                 break;
1494         case 'l':
1495                 size = 4;
1496                 break;
1497         default:
1498                 db_error("Unknown size\n");
1499                 return;
1500         }
1501
1502         while (db_expression(&new_value)) {
1503                 switch (size) {
1504                 default:
1505                 case 1:
1506                         old_value = ahd_inb(ahd_ddb_softc, addr);
1507                         ahd_outb(ahd_ddb_softc, addr, new_value);
1508                         break;
1509                 case 2:
1510                         old_value = ahd_inw(ahd_ddb_softc, addr);
1511                         ahd_outw(ahd_ddb_softc, addr, new_value);
1512                         break;
1513                 case 4:
1514                         old_value = ahd_inl(ahd_ddb_softc, addr);
1515                         ahd_outl(ahd_ddb_softc, addr, new_value);
1516                         break;
1517                 }
1518                 db_printf("%04lx (M)%x: \t0x%lx\t=\t0x%lx",
1519                           (u_long)addr, ahd_inb(ahd_ddb_softc, MODE_PTR),
1520                           (u_long)old_value, (u_long)new_value);
1521                 addr += size;
1522         }
1523         db_skip_to_eol();
1524 }
1525
1526 DB_COMMAND(ahd_dump, ahd_ddb_dump)
1527 {
1528         if (ahd_ddb_softc == NULL) {
1529                 db_error("Must set unit with ahd_sunit first!\n");
1530                 return;
1531         }
1532         ahd_dump_card_state(ahd_ddb_softc);
1533 }
1534
1535 #endif
1536
1537 DECLARE_MODULE(ahd, ahd_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1538 MODULE_DEPEND(ahd, cam, 1, 1, 1);
1539 MODULE_VERSION(ahd, 1);