sys/dev/disk/aic7xxx/aic79xx_osm.c

   1 /*
   2  * Bus independent FreeBSD shim for the aic7xxx based adaptec SCSI controllers
   3  *
   4  * Copyright (c) 1994-2002 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#27 $
  33  *
  34  * $FreeBSD: src/sys/dev/aic7xxx/aic79xx_osm.c,v 1.3.2.4 2003/06/10 03:26:07 gibbs Exp $
  35  * $DragonFly: src/sys/dev/disk/aic7xxx/aic79xx_osm.c,v 1.3 2003/08/07 21:16:51 dillon Exp $
  36  */
  37
  38 #include "aic79xx_osm.h"
  39 #include "aic79xx_inline.h"
  40
  41 #include "opt_ddb.h"
  42 #ifdef DDB
  43 #include <ddb/ddb.h>
  44 #endif
  45
  46 #ifndef AHD_TMODE_ENABLE
  47 #define AHD_TMODE_ENABLE 0
  48 #endif
  49
  50 #define ccb_scb_ptr spriv_ptr0
  51
  52 #if UNUSED
  53 static void     ahd_dump_targcmd(struct target_cmd *cmd);
  54 #endif
  55 static int      ahd_modevent(module_t mod, int type, void *data);
  56 static void     ahd_action(struct cam_sim *sim, union ccb *ccb);
  57 static void     ahd_set_tran_settings(struct ahd_softc *ahd,
  58                                       int our_id, char channel,
  59                                       struct ccb_trans_settings *cts);
  60 static void     ahd_get_tran_settings(struct ahd_softc *ahd,
  61                                       int our_id, char channel,
  62                                       struct ccb_trans_settings *cts);
  63 static void     ahd_async(void *callback_arg, uint32_t code,
  64                           struct cam_path *path, void *arg);
  65 static void     ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs,
  66                                 int nsegments, int error);
  67 static void     ahd_poll(struct cam_sim *sim);
  68 static void     ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
  69                                struct ccb_scsiio *csio, struct scb *scb);
  70 static void     ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim,
  71                               union ccb *ccb);
  72 static int      ahd_create_path(struct ahd_softc *ahd,
  73                                 char channel, u_int target, u_int lun,
  74                                 struct cam_path **path);
  75
  76 #if NOT_YET
  77 static void     ahd_set_recoveryscb(struct ahd_softc *ahd, struct scb *scb);
  78 #endif
  79
  80 static int
  81 ahd_create_path(struct ahd_softc *ahd, char channel, u_int target,
  82                 u_int lun, struct cam_path **path)
  83 {
  84         path_id_t path_id;
  85
  86         if (channel == 'B')
  87                 path_id = cam_sim_path(ahd->platform_data->sim_b);
  88         else
  89                 path_id = cam_sim_path(ahd->platform_data->sim);
  90
  91         return (xpt_create_path(path, /*periph*/NULL,
  92                                 path_id, target, lun));
  93 }
  94
  95 int
  96 ahd_map_int(struct ahd_softc *ahd)
  97 {
  98         int error;
  99
 100         /* Hook up our interrupt handler */
 101         error = bus_setup_intr(ahd->dev_softc, ahd->platform_data->irq,
 102                                INTR_TYPE_CAM, ahd_platform_intr, ahd,
 103                                &ahd->platform_data->ih);
 104         if (error != 0)
 105                 device_printf(ahd->dev_softc, "bus_setup_intr() failed: %d\n",
 106                               error);
 107         return (error);
 108 }
 109
 110 /*
 111  * Attach all the sub-devices we can find
 112  */
 113 int
 114 ahd_attach(struct ahd_softc *ahd)
 115 {
 116         char   ahd_info[256];
 117         struct ccb_setasync csa;
 118         struct cam_devq *devq;
 119         struct cam_sim *sim;
 120         struct cam_path *path;
 121         long s;
 122         int count;
 123
 124         count = 0;
 125         sim = NULL;
 126
 127         ahd_controller_info(ahd, ahd_info);
 128         printf("%s\n", ahd_info);
 129         ahd_lock(ahd, &s);
 130
 131         /*
 132          * Create the device queue for our SIM(s).
 133          */
 134         devq = cam_simq_alloc(AHD_MAX_QUEUE);
 135         if (devq == NULL)
 136                 goto fail;
 137
 138         /*
 139          * Construct our SIM entry
 140          */
 141         sim = cam_sim_alloc(ahd_action, ahd_poll, "ahd", ahd,
 142                             device_get_unit(ahd->dev_softc),
 143                             1, /*XXX*/256, devq);
 144         if (sim == NULL) {
 145                 cam_simq_free(devq);
 146                 goto fail;
 147         }
 148
 149         if (xpt_bus_register(sim, /*bus_id*/0) != CAM_SUCCESS) {
 150                 cam_sim_free(sim, /*free_devq*/TRUE);
 151                 sim = NULL;
 152                 goto fail;
 153         }
 154
 155         if (xpt_create_path(&path, /*periph*/NULL,
 156                             cam_sim_path(sim), CAM_TARGET_WILDCARD,
 157                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 158                 xpt_bus_deregister(cam_sim_path(sim));
 159                 cam_sim_free(sim, /*free_devq*/TRUE);
 160                 sim = NULL;
 161                 goto fail;
 162         }
 163
 164         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 165         csa.ccb_h.func_code = XPT_SASYNC_CB;
 166         csa.event_enable = AC_LOST_DEVICE;
 167         csa.callback = ahd_async;
 168         csa.callback_arg = sim;
 169         xpt_action((union ccb *)&csa);
 170         count++;
 171
 172 fail:
 173         ahd->platform_data->sim = sim;
 174         ahd->platform_data->path = path;
 175         if (count != 0) {
 176                 /* We have to wait until after any system dumps... */
 177                 ahd->platform_data->eh =
 178                     EVENTHANDLER_REGISTER(shutdown_final, ahd_shutdown,
 179                                           ahd, SHUTDOWN_PRI_DEFAULT);
 180                 ahd_intr_enable(ahd, TRUE);
 181         }
 182
 183         ahd_unlock(ahd, &s);
 184
 185         return (count);
 186 }
 187
 188 /*
 189  * Catch an interrupt from the adapter
 190  */
 191 void
 192 ahd_platform_intr(void *arg)
 193 {
 194         struct  ahd_softc *ahd;
 195
 196         ahd = (struct ahd_softc *)arg;
 197         ahd_intr(ahd);
 198 }
 199
 200 /*
 201  * We have an scb which has been processed by the
 202  * adaptor, now we look to see how the operation
 203  * went.
 204  */
 205 void
 206 ahd_done(struct ahd_softc *ahd, struct scb *scb)
 207 {
 208         union ccb *ccb;
 209
 210         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
 211                   ("ahd_done - scb %d\n", SCB_GET_TAG(scb)));
 212
 213         ccb = scb->io_ctx;
 214         LIST_REMOVE(scb, pending_links);
 215
 216         untimeout(ahd_timeout, (caddr_t)scb, ccb->ccb_h.timeout_ch);
 217
 218         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 219                 bus_dmasync_op_t op;
 220
 221                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 222                         op = BUS_DMASYNC_POSTREAD;
 223                 else
 224                         op = BUS_DMASYNC_POSTWRITE;
 225                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
 226                 bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
 227         }
 228
 229 #ifdef AHD_TARGET_MODE
 230         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 231                 struct cam_path *ccb_path;
 232
 233                 /*
 234                  * If we have finally disconnected, clean up our
 235                  * pending device state.
 236                  * XXX - There may be error states that cause where
 237                  *       we will remain connected.
 238                  */
 239                 ccb_path = ccb->ccb_h.path;
 240                 if (ahd->pending_device != NULL
 241                  && xpt_path_comp(ahd->pending_device->path, ccb_path) == 0) {
 242
 243                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 244                                 ahd->pending_device = NULL;
 245                         } else {
 246                                 xpt_print_path(ccb->ccb_h.path);
 247                                 printf("Still disconnected\n");
 248                                 ahd_freeze_ccb(ccb);
 249                         }
 250                 }
 251
 252                 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG)
 253                         ccb->ccb_h.status |= CAM_REQ_CMP;
 254                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 255                 ahd_free_scb(ahd, scb);
 256                 xpt_done(ccb);
 257                 return;
 258         }
 259 #endif
 260
 261         /*
 262          * If the recovery SCB completes, we have to be
 263          * out of our timeout.
 264          */
 265         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
 266                 struct  scb *list_scb;
 267
 268                 /*
 269                  * We were able to complete the command successfully,
 270                  * so reinstate the timeouts for all other pending
 271                  * commands.
 272                  */
 273                 LIST_FOREACH(list_scb, &ahd->pending_scbs, pending_links) {
 274                         union ccb *ccb;
 275                         uint64_t time;
 276
 277                         ccb = list_scb->io_ctx;
 278                         if (ccb->ccb_h.timeout == CAM_TIME_INFINITY)
 279                                 continue;
 280
 281                         time = ccb->ccb_h.timeout;
 282                         time *= hz;
 283                         time /= 1000;
 284                         ccb->ccb_h.timeout_ch =
 285                             timeout(ahd_timeout, list_scb, time);
 286                 }
 287
 288                 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
 289                  || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
 290                         ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
 291                 ahd_print_path(ahd, scb);
 292                 printf("no longer in timeout, status = %x\n",
 293                        ccb->ccb_h.status);
 294         }
 295
 296         /* Don't clobber any existing error state */
 297         if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
 298                 ccb->ccb_h.status |= CAM_REQ_CMP;
 299         } else if ((scb->flags & SCB_SENSE) != 0) {
 300                 /*
 301                  * We performed autosense retrieval.
 302                  *
 303                  * Zero any sense not transferred by the
 304                  * device.  The SCSI spec mandates that any
 305                  * untransfered data should be assumed to be
 306                  * zero.  Complete the 'bounce' of sense information
 307                  * through buffers accessible via bus-space by
 308                  * copying it into the clients csio.
 309                  */
 310                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 311                 memcpy(&ccb->csio.sense_data,
 312                        ahd_get_sense_buf(ahd, scb),
 313 /* XXX What size do we want to use??? */
 314                         sizeof(ccb->csio.sense_data)
 315                        - ccb->csio.sense_resid);
 316                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 317         } else if ((scb->flags & SCB_PKT_SENSE) != 0) {
 318                 struct scsi_status_iu_header *siu;
 319                 u_int sense_len;
 320                 int i;
 321
 322                 /*
 323                  * Copy only the sense data into the provided buffer.
 324                  */
 325                 siu = (struct scsi_status_iu_header *)scb->sense_data;
 326                 sense_len = MIN(scsi_4btoul(siu->sense_length),
 327                                 sizeof(ccb->csio.sense_data));
 328                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 329                 memcpy(&ccb->csio.sense_data,
 330                        ahd_get_sense_buf(ahd, scb) + SIU_SENSE_OFFSET(siu),
 331                        sense_len);
 332                 printf("Copied %d bytes of sense data offset %d:", sense_len,
 333                        SIU_SENSE_OFFSET(siu));
 334                 for (i = 0; i < sense_len; i++)
 335                         printf(" 0x%x", ((uint8_t *)&ccb->csio.sense_data)[i]);
 336                 printf("\n");
 337                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 338         }
 339         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 340         ahd_free_scb(ahd, scb);
 341         xpt_done(ccb);
 342 }
 343
 344 static void
 345 ahd_action(struct cam_sim *sim, union ccb *ccb)
 346 {
 347         struct  ahd_softc *ahd;
 348 #ifdef AHD_TARGET_MODE
 349         struct  ahd_tmode_lstate *lstate;
 350 #endif
 351         u_int   target_id;
 352         u_int   our_id;
 353         long    s;
 354
 355         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahd_action\n"));
 356
 357         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 358
 359         target_id = ccb->ccb_h.target_id;
 360         our_id = SIM_SCSI_ID(ahd, sim);
 361
 362         switch (ccb->ccb_h.func_code) {
 363         /* Common cases first */
 364 #ifdef AHD_TARGET_MODE
 365         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 366         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 367         {
 368                 struct     ahd_tmode_tstate *tstate;
 369                 cam_status status;
 370
 371                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 372                                              &lstate, TRUE);
 373
 374                 if (status != CAM_REQ_CMP) {
 375                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 376                                 /* Response from the black hole device */
 377                                 tstate = NULL;
 378                                 lstate = ahd->black_hole;
 379                         } else {
 380                                 ccb->ccb_h.status = status;
 381                                 xpt_done(ccb);
 382                                 break;
 383                         }
 384                 }
 385                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 386
 387                         ahd_lock(ahd, &s);
 388                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 389                                           sim_links.sle);
 390                         ccb->ccb_h.status = CAM_REQ_INPROG;
 391                         if ((ahd->flags & AHD_TQINFIFO_BLOCKED) != 0)
 392                                 ahd_run_tqinfifo(ahd, /*paused*/FALSE);
 393                         ahd_unlock(ahd, &s);
 394                         break;
 395                 }
 396
 397                 /*
 398                  * The target_id represents the target we attempt to
 399                  * select.  In target mode, this is the initiator of
 400                  * the original command.
 401                  */
 402                 our_id = target_id;
 403                 target_id = ccb->csio.init_id;
 404                 /* FALLTHROUGH */
 405         }
 406 #endif
 407         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 408         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 409         {
 410                 struct  scb *scb;
 411                 struct  hardware_scb *hscb;
 412                 struct  ahd_initiator_tinfo *tinfo;
 413                 struct  ahd_tmode_tstate *tstate;
 414                 u_int   col_idx;
 415
 416                 if ((ahd->flags & AHD_INITIATORROLE) == 0
 417                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 418                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 419                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 420                         xpt_done(ccb);
 421                         return;
 422                 }
 423
 424                 /*
 425                  * get an scb to use.
 426                  */
 427                 ahd_lock(ahd, &s);
 428                 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
 429                                             target_id, &tstate);
 430                 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
 431                  || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
 432                  || ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 433                         col_idx = AHD_NEVER_COL_IDX;
 434                 } else {
 435                         col_idx = AHD_BUILD_COL_IDX(target_id,
 436                                                     ccb->ccb_h.target_lun);
 437                 }
 438                 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
 439
 440                         xpt_freeze_simq(sim, /*count*/1);
 441                         ahd->flags |= AHD_RESOURCE_SHORTAGE;
 442                         ahd_unlock(ahd, &s);
 443                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 444                         xpt_done(ccb);
 445                         return;
 446                 }
 447                 ahd_unlock(ahd, &s);
 448
 449                 hscb = scb->hscb;
 450
 451                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 452                           ("start scb(%p)\n", scb));
 453                 scb->io_ctx = ccb;
 454                 /*
 455                  * So we can find the SCB when an abort is requested
 456                  */
 457                 ccb->ccb_h.ccb_scb_ptr = scb;
 458
 459                 /*
 460                  * Put all the arguments for the xfer in the scb
 461                  */
 462                 hscb->control = 0;
 463                 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id);
 464                 hscb->lun = ccb->ccb_h.target_lun;
 465                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 466                         hscb->cdb_len = 0;
 467                         scb->flags |= SCB_DEVICE_RESET;
 468                         hscb->control |= MK_MESSAGE;
 469                         hscb->task_management = SIU_TASKMGMT_LUN_RESET;
 470                         ahd_execute_scb(scb, NULL, 0, 0);
 471                 } else {
 472 #ifdef AHD_TARGET_MODE
 473                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 474                                 struct target_data *tdata;
 475
 476                                 tdata = &hscb->shared_data.tdata;
 477                                 if (ahd->pending_device == lstate)
 478                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 479                                 hscb->control |= TARGET_SCB;
 480                                 tdata->target_phases = 0;
 481                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 482                                         tdata->target_phases |= SPHASE_PENDING;
 483                                         tdata->scsi_status =
 484                                             ccb->csio.scsi_status;
 485                                 }
 486                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 487                                         tdata->target_phases |= NO_DISCONNECT;
 488
 489                                 tdata->initiator_tag =
 490                                     ahd_htole16(ccb->csio.tag_id);
 491                         }
 492 #endif
 493                         hscb->task_management = 0;
 494                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 495                                 hscb->control |= ccb->csio.tag_action;
 496
 497                         ahd_setup_data(ahd, sim, &ccb->csio, scb);
 498                 }
 499                 break;
 500         }
 501 #ifdef AHD_TARGET_MODE
 502         case XPT_NOTIFY_ACK:
 503         case XPT_IMMED_NOTIFY:
 504         {
 505                 struct     ahd_tmode_tstate *tstate;
 506                 struct     ahd_tmode_lstate *lstate;
 507                 cam_status status;
 508
 509                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 510                                              &lstate, TRUE);
 511
 512                 if (status != CAM_REQ_CMP) {
 513                         ccb->ccb_h.status = status;
 514                         xpt_done(ccb);
 515                         break;
 516                 }
 517                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 518                                   sim_links.sle);
 519                 ccb->ccb_h.status = CAM_REQ_INPROG;
 520                 ahd_send_lstate_events(ahd, lstate);
 521                 break;
 522         }
 523         case XPT_EN_LUN:                /* Enable LUN as a target */
 524                 ahd_handle_en_lun(ahd, sim, ccb);
 525                 xpt_done(ccb);
 526                 break;
 527 #endif
 528         case XPT_ABORT:                 /* Abort the specified CCB */
 529         {
 530                 ahd_abort_ccb(ahd, sim, ccb);
 531                 break;
 532         }
 533         case XPT_SET_TRAN_SETTINGS:
 534         {
 535                 ahd_lock(ahd, &s);
 536                 ahd_set_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 537                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 538                 ahd_unlock(ahd, &s);
 539                 xpt_done(ccb);
 540                 break;
 541         }
 542         case XPT_GET_TRAN_SETTINGS:
 543         /* Get default/user set transfer settings for the target */
 544         {
 545                 ahd_lock(ahd, &s);
 546                 ahd_get_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 547                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 548                 ahd_unlock(ahd, &s);
 549                 xpt_done(ccb);
 550                 break;
 551         }
 552         case XPT_CALC_GEOMETRY:
 553         {
 554                 struct    ccb_calc_geometry *ccg;
 555                 uint32_t size_mb;
 556                 uint32_t secs_per_cylinder;
 557                 int       extended;
 558
 559                 ccg = &ccb->ccg;
 560                 size_mb = ccg->volume_size
 561                         / ((1024L * 1024L) / ccg->block_size);
 562                 extended = ahd->flags & AHD_EXTENDED_TRANS_A;
 563
 564                 if (size_mb > 1024 && extended) {
 565                         ccg->heads = 255;
 566                         ccg->secs_per_track = 63;
 567                 } else {
 568                         ccg->heads = 64;
 569                         ccg->secs_per_track = 32;
 570                 }
 571                 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
 572                 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
 573                 ccb->ccb_h.status = CAM_REQ_CMP;
 574                 xpt_done(ccb);
 575                 break;
 576         }
 577         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 578         {
 579                 int  found;
 580
 581                 ahd_lock(ahd, &s);
 582                 found = ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
 583                                           /*initiate reset*/TRUE);
 584                 ahd_unlock(ahd, &s);
 585                 if (bootverbose) {
 586                         xpt_print_path(SIM_PATH(ahd, sim));
 587                         printf("SCSI bus reset delivered. "
 588                                "%d SCBs aborted.\n", found);
 589                 }
 590                 ccb->ccb_h.status = CAM_REQ_CMP;
 591                 xpt_done(ccb);
 592                 break;
 593         }
 594         case XPT_TERM_IO:               /* Terminate the I/O process */
 595                 /* XXX Implement */
 596                 ccb->ccb_h.status = CAM_REQ_INVALID;
 597                 xpt_done(ccb);
 598                 break;
 599         case XPT_PATH_INQ:              /* Path routing inquiry */
 600         {
 601                 struct ccb_pathinq *cpi = &ccb->cpi;
 602
 603                 cpi->version_num = 1; /* XXX??? */
 604                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 605                 if ((ahd->features & AHD_WIDE) != 0)
 606                         cpi->hba_inquiry |= PI_WIDE_16;
 607                 if ((ahd->features & AHD_TARGETMODE) != 0) {
 608                         cpi->target_sprt = PIT_PROCESSOR
 609                                          | PIT_DISCONNECT
 610                                          | PIT_TERM_IO;
 611                 } else {
 612                         cpi->target_sprt = 0;
 613                 }
 614                 cpi->hba_misc = 0;
 615                 cpi->hba_eng_cnt = 0;
 616                 cpi->max_target = (ahd->features & AHD_WIDE) ? 15 : 7;
 617                 cpi->max_lun = AHD_NUM_LUNS - 1;
 618                 cpi->initiator_id = ahd->our_id;
 619                 if ((ahd->flags & AHD_RESET_BUS_A) == 0) {
 620                         cpi->hba_misc |= PIM_NOBUSRESET;
 621                 }
 622                 cpi->bus_id = cam_sim_bus(sim);
 623                 cpi->base_transfer_speed = 3300;
 624                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 625                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 626                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 627                 cpi->unit_number = cam_sim_unit(sim);
 628 #ifdef AHD_NEW_TRAN_SETTINGS
 629                 cpi->protocol = PROTO_SCSI;
 630                 cpi->protocol_version = SCSI_REV_2;
 631                 cpi->transport = XPORT_SPI;
 632                 cpi->transport_version = 2;
 633                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
 634                 cpi->transport_version = 4;
 635                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST;
 636 #endif
 637                 cpi->ccb_h.status = CAM_REQ_CMP;
 638                 xpt_done(ccb);
 639                 break;
 640         }
 641         default:
 642                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 643                 xpt_done(ccb);
 644                 break;
 645         }
 646 }
 647
 648
 649 static void
 650 ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 651                       struct ccb_trans_settings *cts)
 652 {
 653 #ifdef AHD_NEW_TRAN_SETTINGS
 654         struct    ahd_devinfo devinfo;
 655         struct    ccb_trans_settings_scsi *scsi;
 656         struct    ccb_trans_settings_spi *spi;
 657         struct    ahd_initiator_tinfo *tinfo;
 658         struct    ahd_tmode_tstate *tstate;
 659         uint16_t *discenable;
 660         uint16_t *tagenable;
 661         u_int     update_type;
 662
 663         scsi = &cts->proto_specific.scsi;
 664         spi = &cts->xport_specific.spi;
 665         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 666                             cts->ccb_h.target_id,
 667                             cts->ccb_h.target_lun,
 668                             SIM_CHANNEL(ahd, sim),
 669                             ROLE_UNKNOWN);
 670         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
 671                                     devinfo.our_scsiid,
 672                                     devinfo.target, &tstate);
 673         update_type = 0;
 674         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 675                 update_type |= AHD_TRANS_GOAL;
 676                 discenable = &tstate->discenable;
 677                 tagenable = &tstate->tagenable;
 678                 tinfo->curr.protocol_version = cts->protocol_version;
 679                 tinfo->curr.transport_version = cts->transport_version;
 680                 tinfo->goal.protocol_version = cts->protocol_version;
 681                 tinfo->goal.transport_version = cts->transport_version;
 682         } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 683                 update_type |= AHD_TRANS_USER;
 684                 discenable = &ahd->user_discenable;
 685                 tagenable = &ahd->user_tagenable;
 686                 tinfo->user.protocol_version = cts->protocol_version;
 687                 tinfo->user.transport_version = cts->transport_version;
 688         } else {
 689                 cts->ccb_h.status = CAM_REQ_INVALID;
 690                 return;
 691         }
 692
 693         if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 694                 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 695                         *discenable |= devinfo.target_mask;
 696                 else
 697                         *discenable &= ~devinfo.target_mask;
 698         }
 699
 700         if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 701                 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 702                         *tagenable |= devinfo.target_mask;
 703                 else
 704                         *tagenable &= ~devinfo.target_mask;
 705         }
 706
 707         if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 708                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
 709                                    &spi->bus_width, ROLE_UNKNOWN);
 710                 ahd_set_width(ahd, &devinfo, spi->bus_width,
 711                               update_type, /*paused*/FALSE);
 712         }
 713
 714         if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 715                 if (update_type == AHD_TRANS_USER)
 716                         spi->ppr_options = tinfo->user.ppr_options;
 717                 else
 718                         spi->ppr_options = tinfo->goal.ppr_options;
 719         }
 720
 721         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 722                 if (update_type == AHD_TRANS_USER)
 723                         spi->sync_offset = tinfo->user.offset;
 724                 else
 725                         spi->sync_offset = tinfo->goal.offset;
 726         }
 727
 728         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 729                 if (update_type == AHD_TRANS_USER)
 730                         spi->sync_period = tinfo->user.period;
 731                 else
 732                         spi->sync_period = tinfo->goal.period;
 733         }
 734
 735         if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 736          || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 737                 u_int   maxsync;
 738
 739                 maxsync = AHD_SYNCRATE_MAX;
 740
 741                 if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 742                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 743
 744                 if ((*discenable & devinfo.target_mask) == 0)
 745                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
 746
 747                 ahd_find_syncrate(ahd, &spi->sync_period,
 748                                   &spi->ppr_options, maxsync);
 749                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
 750                                     spi->sync_period, &spi->sync_offset,
 751                                     spi->bus_width, ROLE_UNKNOWN);
 752
 753                 /* We use a period of 0 to represent async */
 754                 if (spi->sync_offset == 0) {
 755                         spi->sync_period = 0;
 756                         spi->ppr_options = 0;
 757                 }
 758
 759                 ahd_set_syncrate(ahd, &devinfo, spi->sync_period,
 760                                  spi->sync_offset, spi->ppr_options,
 761                                  update_type, /*paused*/FALSE);
 762         }
 763         cts->ccb_h.status = CAM_REQ_CMP;
 764 #else
 765         struct    ahd_devinfo devinfo;
 766         struct    ahd_initiator_tinfo *tinfo;
 767         struct    ahd_tmode_tstate *tstate;
 768         uint16_t *discenable;
 769         uint16_t *tagenable;
 770         u_int     update_type;
 771
 772         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 773                             cts->ccb_h.target_id,
 774                             cts->ccb_h.target_lun,
 775                             SIM_CHANNEL(ahd, sim),
 776                             ROLE_UNKNOWN);
 777         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
 778                                     devinfo.our_scsiid,
 779                                     devinfo.target, &tstate);
 780         update_type = 0;
 781         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) {
 782                 update_type |= AHD_TRANS_GOAL;
 783                 discenable = &tstate->discenable;
 784                 tagenable = &tstate->tagenable;
 785         } else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
 786                 update_type |= AHD_TRANS_USER;
 787                 discenable = &ahd->user_discenable;
 788                 tagenable = &ahd->user_tagenable;
 789         } else {
 790                 cts->ccb_h.status = CAM_REQ_INVALID;
 791                 return;
 792         }
 793
 794         if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
 795                 if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
 796                         *discenable |= devinfo.target_mask;
 797                 else
 798                         *discenable &= ~devinfo.target_mask;
 799         }
 800
 801         if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
 802                 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
 803                         *tagenable |= devinfo.target_mask;
 804                 else
 805                         *tagenable &= ~devinfo.target_mask;
 806         }
 807
 808         if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
 809                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
 810                                    &cts->bus_width, ROLE_UNKNOWN);
 811                 ahd_set_width(ahd, &devinfo, cts->bus_width,
 812                               update_type, /*paused*/FALSE);
 813         }
 814
 815         if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) {
 816                 if (update_type == AHD_TRANS_USER)
 817                         cts->sync_offset = tinfo->user.offset;
 818                 else
 819                         cts->sync_offset = tinfo->goal.offset;
 820         }
 821
 822         if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) {
 823                 if (update_type == AHD_TRANS_USER)
 824                         cts->sync_period = tinfo->user.period;
 825                 else
 826                         cts->sync_period = tinfo->goal.period;
 827         }
 828
 829         if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
 830          || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)
 831          || ((cts->valid & CCB_TRANS_TQ_VALID) != 0)
 832          || ((cts->valid & CCB_TRANS_DISC_VALID) != 0)) {
 833                 u_int ppr_options;
 834                 u_int maxsync;
 835
 836                 maxsync = AHD_SYNCRATE_MAX;
 837                 ppr_options = 0;
 838                 if (cts->sync_period <= AHD_SYNCRATE_DT
 839                  && cts->bus_width == MSG_EXT_WDTR_BUS_16_BIT) {
 840                         ppr_options = tinfo->user.ppr_options
 841                                     | MSG_EXT_PPR_DT_REQ;
 842                 }
 843
 844                 if ((*tagenable & devinfo.target_mask) == 0
 845                  || (*discenable & devinfo.target_mask) == 0)
 846                         ppr_options &= ~MSG_EXT_PPR_IU_REQ;
 847
 848                 ahd_find_syncrate(ahd, &cts->sync_period,
 849                                   &ppr_options, maxsync);
 850                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
 851                                     cts->sync_period, &cts->sync_offset,
 852                                     MSG_EXT_WDTR_BUS_8_BIT,
 853                                     ROLE_UNKNOWN);
 854
 855                 /* We use a period of 0 to represent async */
 856                 if (cts->sync_offset == 0) {
 857                         cts->sync_period = 0;
 858                         ppr_options = 0;
 859                 }
 860
 861                 if (ppr_options != 0
 862                  && tinfo->user.transport_version >= 3) {
 863                         tinfo->goal.transport_version =
 864                             tinfo->user.transport_version;
 865                         tinfo->curr.transport_version =
 866                             tinfo->user.transport_version;
 867                 }
 868
 869                 ahd_set_syncrate(ahd, &devinfo, cts->sync_period,
 870                                  cts->sync_offset, ppr_options,
 871                                  update_type, /*paused*/FALSE);
 872         }
 873         cts->ccb_h.status = CAM_REQ_CMP;
 874 #endif
 875 }
 876
 877 static void
 878 ahd_get_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 879                       struct ccb_trans_settings *cts)
 880 {
 881 #ifdef AHD_NEW_TRAN_SETTINGS
 882         struct  ahd_devinfo devinfo;
 883         struct  ccb_trans_settings_scsi *scsi;
 884         struct  ccb_trans_settings_spi *spi;
 885         struct  ahd_initiator_tinfo *targ_info;
 886         struct  ahd_tmode_tstate *tstate;
 887         struct  ahd_transinfo *tinfo;
 888
 889         scsi = &cts->proto_specific.scsi;
 890         spi = &cts->xport_specific.spi;
 891         ahd_compile_devinfo(&devinfo, our_id,
 892                             cts->ccb_h.target_id,
 893                             cts->ccb_h.target_lun,
 894                             channel, ROLE_UNKNOWN);
 895         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
 896                                         devinfo.our_scsiid,
 897                                         devinfo.target, &tstate);
 898
 899         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 900                 tinfo = &targ_info->curr;
 901         else
 902                 tinfo = &targ_info->user;
 903
 904         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 905         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 906         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 907                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
 908                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 909
 910                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
 911                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 912         } else {
 913                 if ((tstate->discenable & devinfo.target_mask) != 0)
 914                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 915
 916                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 917                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 918         }
 919         cts->protocol_version = tinfo->protocol_version;
 920         cts->transport_version = tinfo->transport_version;
 921
 922         spi->sync_period = tinfo->period;
 923         spi->sync_offset = tinfo->offset;
 924         spi->bus_width = tinfo->width;
 925         spi->ppr_options = tinfo->ppr_options;
 926
 927         cts->protocol = PROTO_SCSI;
 928         cts->transport = XPORT_SPI;
 929         spi->valid = CTS_SPI_VALID_SYNC_RATE
 930                    | CTS_SPI_VALID_SYNC_OFFSET
 931                    | CTS_SPI_VALID_BUS_WIDTH
 932                    | CTS_SPI_VALID_PPR_OPTIONS;
 933
 934         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 935                 scsi->valid = CTS_SCSI_VALID_TQ;
 936                 spi->valid |= CTS_SPI_VALID_DISC;
 937         } else {
 938                 scsi->valid = 0;
 939         }
 940
 941         cts->ccb_h.status = CAM_REQ_CMP;
 942 #else
 943         struct  ahd_devinfo devinfo;
 944         struct  ahd_initiator_tinfo *targ_info;
 945         struct  ahd_tmode_tstate *tstate;
 946         struct  ahd_transinfo *tinfo;
 947
 948         ahd_compile_devinfo(&devinfo, our_id,
 949                             cts->ccb_h.target_id,
 950                             cts->ccb_h.target_lun,
 951                             channel, ROLE_UNKNOWN);
 952         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
 953                                         devinfo.our_scsiid,
 954                                         devinfo.target, &tstate);
 955
 956         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
 957                 tinfo = &targ_info->curr;
 958         else
 959                 tinfo = &targ_info->user;
 960
 961         cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
 962         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) == 0) {
 963                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
 964                         cts->flags |= CCB_TRANS_DISC_ENB;
 965
 966                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
 967                         cts->flags |= CCB_TRANS_TAG_ENB;
 968         } else {
 969                 if ((tstate->discenable & devinfo.target_mask) != 0)
 970                         cts->flags |= CCB_TRANS_DISC_ENB;
 971
 972                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 973                         cts->flags |= CCB_TRANS_TAG_ENB;
 974         }
 975         cts->sync_period = tinfo->period;
 976         cts->sync_offset = tinfo->offset;
 977         cts->bus_width = tinfo->width;
 978
 979         cts->valid = CCB_TRANS_SYNC_RATE_VALID
 980                    | CCB_TRANS_SYNC_OFFSET_VALID
 981                    | CCB_TRANS_BUS_WIDTH_VALID;
 982
 983         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD)
 984                 cts->valid |= CCB_TRANS_DISC_VALID|CCB_TRANS_TQ_VALID;
 985
 986         cts->ccb_h.status = CAM_REQ_CMP;
 987 #endif
 988 }
 989
 990 static void
 991 ahd_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 992 {
 993         struct ahd_softc *ahd;
 994         struct cam_sim *sim;
 995
 996         sim = (struct cam_sim *)callback_arg;
 997         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 998         switch (code) {
 999         case AC_LOST_DEVICE:
1000         {
1001                 struct  ahd_devinfo devinfo;
1002                 long    s;
1003
1004                 ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
1005                                     xpt_path_target_id(path),
1006                                     xpt_path_lun_id(path),
1007                                     SIM_CHANNEL(ahd, sim),
1008                                     ROLE_UNKNOWN);
1009
1010                 /*
1011                  * Revert to async/narrow transfers
1012                  * for the next device.
1013                  */
1014                 ahd_lock(ahd, &s);
1015                 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
1016                               AHD_TRANS_GOAL|AHD_TRANS_CUR, /*paused*/FALSE);
1017                 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
1018                                  /*ppr_options*/0, AHD_TRANS_GOAL|AHD_TRANS_CUR,
1019                                  /*paused*/FALSE);
1020                 ahd_unlock(ahd, &s);
1021                 break;
1022         }
1023         default:
1024                 break;
1025         }
1026 }
1027
1028 static void
1029 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
1030                 int error)
1031 {
1032         struct  scb *scb;
1033         union   ccb *ccb;
1034         struct  ahd_softc *ahd;
1035         struct  ahd_initiator_tinfo *tinfo;
1036         struct  ahd_tmode_tstate *tstate;
1037         u_int   mask;
1038         u_long  s;
1039
1040         scb = (struct scb *)arg;
1041         ccb = scb->io_ctx;
1042         ahd = scb->ahd_softc;
1043
1044         if (error != 0) {
1045                 if (error == EFBIG)
1046                         ahd_set_transaction_status(scb, CAM_REQ_TOO_BIG);
1047                 else
1048                         ahd_set_transaction_status(scb, CAM_REQ_CMP_ERR);
1049                 if (nsegments != 0)
1050                         bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
1051                 ahd_lock(ahd, &s);
1052                 ahd_free_scb(ahd, scb);
1053                 ahd_unlock(ahd, &s);
1054                 xpt_done(ccb);
1055                 return;
1056         }
1057         scb->sg_count = 0;
1058         if (nsegments != 0) {
1059                 void *sg;
1060                 bus_dmasync_op_t op;
1061                 u_int i;
1062
1063                 /* Copy the segments into our SG list */
1064                 for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
1065
1066                         sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
1067                                           dm_segs->ds_len,
1068                                           /*last*/i == 1);
1069                         dm_segs++;
1070                 }
1071
1072                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1073                         op = BUS_DMASYNC_PREREAD;
1074                 else
1075                         op = BUS_DMASYNC_PREWRITE;
1076
1077                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
1078
1079                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
1080                         struct target_data *tdata;
1081
1082                         tdata = &scb->hscb->shared_data.tdata;
1083                         tdata->target_phases |= DPHASE_PENDING;
1084                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
1085                                 tdata->data_phase = P_DATAOUT;
1086                         else
1087                                 tdata->data_phase = P_DATAIN;
1088                 }
1089         }
1090
1091         ahd_lock(ahd, &s);
1092
1093         /*
1094          * Last time we need to check if this SCB needs to
1095          * be aborted.
1096          */
1097         if (ahd_get_transaction_status(scb) != CAM_REQ_INPROG) {
1098                 if (nsegments != 0)
1099                         bus_dmamap_unload(ahd->buffer_dmat,
1100                                           scb->dmamap);
1101                 ahd_free_scb(ahd, scb);
1102                 ahd_unlock(ahd, &s);
1103                 xpt_done(ccb);
1104                 return;
1105         }
1106
1107         tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
1108                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1109                                     SCSIID_TARGET(ahd, scb->hscb->scsiid),
1110                                     &tstate);
1111
1112         mask = SCB_GET_TARGET_MASK(ahd, scb);
1113
1114         if ((tstate->discenable & mask) != 0
1115          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1116                 scb->hscb->control |= DISCENB;
1117
1118         if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1119                 scb->flags |= SCB_PACKETIZED;
1120                 if (scb->hscb->task_management != 0)
1121                         scb->hscb->control &= ~MK_MESSAGE;
1122         }
1123
1124         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1125          && (tinfo->goal.width != 0
1126           || tinfo->goal.period != 0
1127           || tinfo->goal.ppr_options != 0)) {
1128                 scb->flags |= SCB_NEGOTIATE;
1129                 scb->hscb->control |= MK_MESSAGE;
1130         } else if ((tstate->auto_negotiate & mask) != 0) {
1131                 scb->flags |= SCB_AUTO_NEGOTIATE;
1132                 scb->hscb->control |= MK_MESSAGE;
1133         }
1134
1135         LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1136
1137         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1138
1139         if (ccb->ccb_h.timeout != CAM_TIME_INFINITY) {
1140                 uint64_t time;
1141
1142                 if (ccb->ccb_h.timeout == CAM_TIME_DEFAULT)
1143                         ccb->ccb_h.timeout = 5 * 1000;
1144
1145                 time = ccb->ccb_h.timeout;
1146                 time *= hz;
1147                 time /= 1000;
1148                 ccb->ccb_h.timeout_ch =
1149                     timeout(ahd_timeout, (caddr_t)scb, time);
1150         }
1151
1152         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1153                 /* Define a mapping from our tag to the SCB. */
1154                 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
1155                 ahd_pause(ahd);
1156                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1157                 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
1158                 ahd_unpause(ahd);
1159         } else {
1160                 ahd_queue_scb(ahd, scb);
1161         }
1162
1163         ahd_unlock(ahd, &s);
1164 }
1165
1166 static void
1167 ahd_poll(struct cam_sim *sim)
1168 {
1169         ahd_intr(cam_sim_softc(sim));
1170 }
1171
1172 static void
1173 ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
1174                struct ccb_scsiio *csio, struct scb *scb)
1175 {
1176         struct hardware_scb *hscb;
1177         struct ccb_hdr *ccb_h;
1178
1179         hscb = scb->hscb;
1180         ccb_h = &csio->ccb_h;
1181
1182         csio->resid = 0;
1183         csio->sense_resid = 0;
1184         if (ccb_h->func_code == XPT_SCSI_IO) {
1185                 hscb->cdb_len = csio->cdb_len;
1186                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1187
1188                         if (hscb->cdb_len > MAX_CDB_LEN
1189                          && (ccb_h->flags & CAM_CDB_PHYS) == 0) {
1190                                 u_long s;
1191
1192                                 /*
1193                                  * Should CAM start to support CDB sizes
1194                                  * greater than 16 bytes, we could use
1195                                  * the sense buffer to store the CDB.
1196                                  */
1197                                 ahd_set_transaction_status(scb,
1198                                                            CAM_REQ_INVALID);
1199                                 ahd_lock(ahd, &s);
1200                                 ahd_free_scb(ahd, scb);
1201                                 ahd_unlock(ahd, &s);
1202                                 xpt_done((union ccb *)csio);
1203                                 return;
1204                         }
1205                         if ((ccb_h->flags & CAM_CDB_PHYS) != 0) {
1206                                 hscb->shared_data.idata.cdb_from_host.cdbptr =
1207                                    ahd_htole64((uintptr_t)csio->cdb_io.cdb_ptr);
1208                                 hscb->shared_data.idata.cdb_from_host.cdblen =
1209                                    csio->cdb_len;
1210                                 hscb->cdb_len |= SCB_CDB_LEN_PTR;
1211                         } else {
1212                                 memcpy(hscb->shared_data.idata.cdb,
1213                                        csio->cdb_io.cdb_ptr,
1214                                        hscb->cdb_len);
1215                         }
1216                 } else {
1217                         if (hscb->cdb_len > MAX_CDB_LEN) {
1218                                 u_long s;
1219
1220                                 ahd_set_transaction_status(scb,
1221                                                            CAM_REQ_INVALID);
1222                                 ahd_lock(ahd, &s);
1223                                 ahd_free_scb(ahd, scb);
1224                                 ahd_unlock(ahd, &s);
1225                                 xpt_done((union ccb *)csio);
1226                                 return;
1227                         }
1228                         memcpy(hscb->shared_data.idata.cdb,
1229                                csio->cdb_io.cdb_bytes, hscb->cdb_len);
1230                 }
1231         }
1232
1233         /* Only use S/G if there is a transfer */
1234         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1235                 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
1236                         /* We've been given a pointer to a single buffer */
1237                         if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
1238                                 int s;
1239                                 int error;
1240
1241                                 s = splsoftvm();
1242                                 error = bus_dmamap_load(ahd->buffer_dmat,
1243                                                         scb->dmamap,
1244                                                         csio->data_ptr,
1245                                                         csio->dxfer_len,
1246                                                         ahd_execute_scb,
1247                                                         scb, /*flags*/0);
1248                                 if (error == EINPROGRESS) {
1249                                         /*
1250                                          * So as to maintain ordering,
1251                                          * freeze the controller queue
1252                                          * until our mapping is
1253                                          * returned.
1254                                          */
1255                                         xpt_freeze_simq(sim,
1256                                                         /*count*/1);
1257                                         scb->io_ctx->ccb_h.status |=
1258                                             CAM_RELEASE_SIMQ;
1259                                 }
1260                                 splx(s);
1261                         } else {
1262                                 struct bus_dma_segment seg;
1263
1264                                 /* Pointer to physical buffer */
1265                                 if (csio->dxfer_len > AHD_MAXTRANSFER_SIZE)
1266                                         panic("ahd_setup_data - Transfer size "
1267                                               "larger than can device max");
1268
1269                                 seg.ds_addr =
1270                                     (bus_addr_t)(vm_offset_t)csio->data_ptr;
1271                                 seg.ds_len = csio->dxfer_len;
1272                                 ahd_execute_scb(scb, &seg, 1, 0);
1273                         }
1274                 } else {
1275                         struct bus_dma_segment *segs;
1276
1277                         if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
1278                                 panic("ahd_setup_data - Physical segment "
1279                                       "pointers unsupported");
1280
1281                         if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
1282                                 panic("ahd_setup_data - Virtual segment "
1283                                       "addresses unsupported");
1284
1285                         /* Just use the segments provided */
1286                         segs = (struct bus_dma_segment *)csio->data_ptr;
1287                         ahd_execute_scb(scb, segs, csio->sglist_cnt, 0);
1288                 }
1289         } else {
1290                 ahd_execute_scb(scb, NULL, 0, 0);
1291         }
1292 }
1293
1294 #if NOT_YET
1295 static void
1296 ahd_set_recoveryscb(struct ahd_softc *ahd, struct scb *scb) {
1297
1298         if ((scb->flags & SCB_RECOVERY_SCB) == 0) {
1299                 struct scb *list_scb;
1300
1301                 scb->flags |= SCB_RECOVERY_SCB;
1302
1303                 /*
1304                  * Take all queued, but not sent SCBs out of the equation.
1305                  * Also ensure that no new CCBs are queued to us while we
1306                  * try to fix this problem.
1307                  */
1308                 if ((scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
1309                         xpt_freeze_simq(SCB_GET_SIM(ahd, scb), /*count*/1);
1310                         scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
1311                 }
1312
1313                 /*
1314                  * Go through all of our pending SCBs and remove
1315                  * any scheduled timeouts for them.  We will reschedule
1316                  * them after we've successfully fixed this problem.
1317                  */
1318                 LIST_FOREACH(list_scb, &ahd->pending_scbs, pending_links) {
1319                         union ccb *ccb;
1320
1321                         ccb = list_scb->io_ctx;
1322                         untimeout(ahd_timeout, list_scb, ccb->ccb_h.timeout_ch);
1323                 }
1324         }
1325 }
1326 #endif
1327
1328 void
1329 ahd_timeout(void *arg)
1330 {
1331         struct  scb       *scb;
1332         struct  ahd_softc *ahd;
1333         ahd_mode_state     saved_modes;
1334         long               s;
1335         int                target;
1336         int                lun;
1337         char               channel;
1338
1339 #if NOT_YET
1340         int                i;
1341         int                found;
1342         u_int              last_phase;
1343 #endif
1344
1345         scb = (struct scb *)arg;
1346         ahd = (struct ahd_softc *)scb->ahd_softc;
1347
1348         ahd_lock(ahd, &s);
1349
1350         ahd_pause_and_flushwork(ahd);
1351
1352         saved_modes = ahd_save_modes(ahd);
1353 #if 0
1354         ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
1355         ahd_outb(ahd, SCSISIGO, ACKO);
1356         printf("set ACK\n");
1357         ahd_outb(ahd, SCSISIGO, 0);
1358         printf("clearing Ack\n");
1359         ahd_restore_modes(ahd, saved_modes);
1360 #endif
1361         if ((scb->flags & SCB_ACTIVE) == 0) {
1362                 /* Previous timeout took care of me already */
1363                 printf("%s: Timedout SCB already complete. "
1364                        "Interrupts may not be functioning.\n", ahd_name(ahd));
1365                 ahd_unpause(ahd);
1366                 ahd_unlock(ahd, &s);
1367                 return;
1368         }
1369
1370         target = SCB_GET_TARGET(ahd, scb);
1371         channel = SCB_GET_CHANNEL(ahd, scb);
1372         lun = SCB_GET_LUN(scb);
1373
1374         ahd_print_path(ahd, scb);
1375         printf("SCB 0x%x - timed out\n", SCB_GET_TAG(scb));
1376         ahd_dump_card_state(ahd);
1377         ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
1378                           /*initiate reset*/TRUE);
1379         ahd_unlock(ahd, &s);
1380         return;
1381 #if NOT_YET
1382         last_phase = ahd_inb(ahd, LASTPHASE);
1383         if (scb->sg_count > 0) {
1384                 for (i = 0; i < scb->sg_count; i++) {
1385                         printf("sg[%d] - Addr 0x%x : Length %d\n",
1386                                i,
1387                                ((struct ahd_dma_seg *)scb->sg_list)[i].addr,
1388                                ((struct ahd_dma_seg *)scb->sg_list)[i].len
1389                                 & AHD_SG_LEN_MASK);
1390                 }
1391         }
1392         if (scb->flags & (SCB_DEVICE_RESET|SCB_ABORT)) {
1393                 /*
1394                  * Been down this road before.
1395                  * Do a full bus reset.
1396                  */
1397 bus_reset:
1398                 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
1399                 found = ahd_reset_channel(ahd, channel, /*Initiate Reset*/TRUE);
1400                 printf("%s: Issued Channel %c Bus Reset. "
1401                        "%d SCBs aborted\n", ahd_name(ahd), channel, found);
1402         } else {
1403                 /*
1404                  * If we are a target, transition to bus free and report
1405                  * the timeout.
1406                  *
1407                  * The target/initiator that is holding up the bus may not
1408                  * be the same as the one that triggered this timeout
1409                  * (different commands have different timeout lengths).
1410                  * If the bus is idle and we are actiing as the initiator
1411                  * for this request, queue a BDR message to the timed out
1412                  * target.  Otherwise, if the timed out transaction is
1413                  * active:
1414                  *   Initiator transaction:
1415                  *      Stuff the message buffer with a BDR message and assert
1416                  *      ATN in the hopes that the target will let go of the bus
1417                  *      and go to the mesgout phase.  If this fails, we'll
1418                  *      get another timeout 2 seconds later which will attempt
1419                  *      a bus reset.
1420                  *
1421                  *   Target transaction:
1422                  *      Transition to BUS FREE and report the error.
1423                  *      It's good to be the target!
1424                  */
1425                 u_int active_scb_index;
1426                 u_int saved_scbptr;
1427
1428                 saved_scbptr = ahd_get_scbptr(ahd);
1429                 active_scb_index = saved_scbptr;
1430
1431                 if (last_phase != P_BUSFREE
1432                   && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0
1433                   && (active_scb_index < ahd->scb_data.numscbs)) {
1434                         struct scb *active_scb;
1435
1436                         /*
1437                          * If the active SCB is not us, assume that
1438                          * the active SCB has a longer timeout than
1439                          * the timedout SCB, and wait for the active
1440                          * SCB to timeout.
1441                          */
1442                         active_scb = ahd_lookup_scb(ahd, active_scb_index);
1443                         if (active_scb != scb) {
1444                                 struct   ccb_hdr *ccbh;
1445                                 uint64_t newtimeout;
1446
1447                                 ahd_print_path(ahd, scb);
1448                                 printf("Other SCB Timeout%s",
1449                                        (scb->flags & SCB_OTHERTCL_TIMEOUT) != 0
1450                                        ? " again\n" : "\n");
1451                                 scb->flags |= SCB_OTHERTCL_TIMEOUT;
1452                                 newtimeout =
1453                                     MAX(active_scb->io_ctx->ccb_h.timeout,
1454                                         scb->io_ctx->ccb_h.timeout);
1455                                 newtimeout *= hz;
1456                                 newtimeout /= 1000;
1457                                 ccbh = &scb->io_ctx->ccb_h;
1458                                 scb->io_ctx->ccb_h.timeout_ch =
1459                                     timeout(ahd_timeout, scb, newtimeout);
1460                                 ahd_unpause(ahd);
1461                                 ahd_unlock(ahd, &s);
1462                                 return;
1463                         }
1464
1465                         /* It's us */
1466                         if ((scb->hscb->control & TARGET_SCB) != 0) {
1467
1468                                 /*
1469                                  * Send back any queued up transactions
1470                                  * and properly record the error condition.
1471                                  */
1472                                 ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
1473                                                SCB_GET_CHANNEL(ahd, scb),
1474                                                SCB_GET_LUN(scb),
1475                                                SCB_GET_TAG(scb),
1476                                                ROLE_TARGET,
1477                                                CAM_CMD_TIMEOUT);
1478
1479                                 /* Will clear us from the bus */
1480                                 ahd_restart(ahd);
1481                                 ahd_unlock(ahd, &s);
1482                                 return;
1483                         }
1484
1485                         ahd_set_recoveryscb(ahd, active_scb);
1486                         ahd_outb(ahd, MSG_OUT, HOST_MSG);
1487                         ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
1488                         ahd_print_path(ahd, active_scb);
1489                         printf("BDR message in message buffer\n");
1490                         active_scb->flags |= SCB_DEVICE_RESET;
1491                         active_scb->io_ctx->ccb_h.timeout_ch =
1492                             timeout(ahd_timeout, (caddr_t)active_scb, 2 * hz);
1493                         ahd_unpause(ahd);
1494                 } else {
1495                         int      disconnected;
1496
1497                         /* XXX Shouldn't panic.  Just punt instead? */
1498                         if ((scb->hscb->control & TARGET_SCB) != 0)
1499                                 panic("Timed-out target SCB but bus idle");
1500
1501                         if (last_phase != P_BUSFREE
1502                          && (ahd_inb(ahd, SSTAT0) & TARGET) != 0) {
1503                                 /* XXX What happened to the SCB? */
1504                                 /* Hung target selection.  Goto busfree */
1505                                 printf("%s: Hung target selection\n",
1506                                        ahd_name(ahd));
1507                                 ahd_restart(ahd);
1508                                 ahd_unlock(ahd, &s);
1509                                 return;
1510                         }
1511
1512                         if (ahd_search_qinfifo(ahd, target, channel, lun,
1513                                                SCB_GET_TAG(scb), ROLE_INITIATOR,
1514                                                /*status*/0, SEARCH_COUNT) > 0) {
1515                                 disconnected = FALSE;
1516                         } else {
1517                                 disconnected = TRUE;
1518                         }
1519
1520                         if (disconnected) {
1521
1522                                 ahd_set_recoveryscb(ahd, scb);
1523                                 /*
1524                                  * Actually re-queue this SCB in an attempt
1525                                  * to select the device before it reconnects.
1526                                  * In either case (selection or reselection),
1527                                  * we will now issue a target reset to the
1528                                  * timed-out device.
1529                                  *
1530                                  * Set the MK_MESSAGE control bit indicating
1531                                  * that we desire to send a message.  We
1532                                  * also set the disconnected flag since
1533                                  * in the paging case there is no guarantee
1534                                  * that our SCB control byte matches the
1535                                  * version on the card.  We don't want the
1536                                  * sequencer to abort the command thinking
1537                                  * an unsolicited reselection occurred.
1538                                  */
1539                                 scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
1540                                 scb->flags |= SCB_DEVICE_RESET;
1541
1542                                 /*
1543                                  * The sequencer will never re-reference the
1544                                  * in-core SCB.  To make sure we are notified
1545                                  * during reslection, set the MK_MESSAGE flag
1546                                  * in the card's copy of the SCB.
1547                                  */
1548                                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1549                                 ahd_outb(ahd, SCB_CONTROL,
1550                                          ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
1551
1552                                 /*
1553                                  * Clear out any entries in the QINFIFO first
1554                                  * so we are the next SCB for this target
1555                                  * to run.
1556                                  */
1557                                 ahd_search_qinfifo(ahd,
1558                                                    SCB_GET_TARGET(ahd, scb),
1559                                                    channel, SCB_GET_LUN(scb),
1560                                                    SCB_LIST_NULL,
1561                                                    ROLE_INITIATOR,
1562                                                    CAM_REQUEUE_REQ,
1563                                                    SEARCH_COMPLETE);
1564                                 ahd_print_path(ahd, scb);
1565                                 printf("Queuing a BDR SCB\n");
1566                                 ahd_qinfifo_requeue_tail(ahd, scb);
1567                                 ahd_set_scbptr(ahd, saved_scbptr);
1568                                 scb->io_ctx->ccb_h.timeout_ch =
1569                                     timeout(ahd_timeout, (caddr_t)scb, 2 * hz);
1570                                 ahd_unpause(ahd);
1571                         } else {
1572                                 /* Go "immediatly" to the bus reset */
1573                                 /* This shouldn't happen */
1574                                 ahd_set_recoveryscb(ahd, scb);
1575                                 ahd_print_path(ahd, scb);
1576                                 printf("SCB %d: Immediate reset.  "
1577                                         "Flags = 0x%x\n", SCB_GET_TAG(scb),
1578                                         scb->flags);
1579                                 goto bus_reset;
1580                         }
1581                 }
1582         }
1583         ahd_unlock(ahd, &s);
1584 #endif
1585 }
1586
1587 static void
1588 ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
1589 {
1590         union ccb *abort_ccb;
1591
1592         abort_ccb = ccb->cab.abort_ccb;
1593         switch (abort_ccb->ccb_h.func_code) {
1594 #ifdef AHD_TARGET_MODE
1595         case XPT_ACCEPT_TARGET_IO:
1596         case XPT_IMMED_NOTIFY:
1597         case XPT_CONT_TARGET_IO:
1598         {
1599                 struct ahd_tmode_tstate *tstate;
1600                 struct ahd_tmode_lstate *lstate;
1601                 struct ccb_hdr_slist *list;
1602                 cam_status status;
1603
1604                 status = ahd_find_tmode_devs(ahd, sim, abort_ccb, &tstate,
1605                                              &lstate, TRUE);
1606
1607                 if (status != CAM_REQ_CMP) {
1608                         ccb->ccb_h.status = status;
1609                         break;
1610                 }
1611
1612                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1613                         list = &lstate->accept_tios;
1614                 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
1615                         list = &lstate->immed_notifies;
1616                 else
1617                         list = NULL;
1618
1619                 if (list != NULL) {
1620                         struct ccb_hdr *curelm;
1621                         int found;
1622
1623                         curelm = SLIST_FIRST(list);
1624                         found = 0;
1625                         if (curelm == &abort_ccb->ccb_h) {
1626                                 found = 1;
1627                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1628                         } else {
1629                                 while(curelm != NULL) {
1630                                         struct ccb_hdr *nextelm;
1631
1632                                         nextelm =
1633                                             SLIST_NEXT(curelm, sim_links.sle);
1634
1635                                         if (nextelm == &abort_ccb->ccb_h) {
1636                                                 found = 1;
1637                                                 SLIST_NEXT(curelm,
1638                                                            sim_links.sle) =
1639                                                     SLIST_NEXT(nextelm,
1640                                                                sim_links.sle);
1641                                                 break;
1642                                         }
1643                                         curelm = nextelm;
1644                                 }
1645                         }
1646
1647                         if (found) {
1648                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1649                                 xpt_done(abort_ccb);
1650                                 ccb->ccb_h.status = CAM_REQ_CMP;
1651                         } else {
1652                                 xpt_print_path(abort_ccb->ccb_h.path);
1653                                 printf("Not found\n");
1654                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1655                         }
1656                         break;
1657                 }
1658                 /* FALLTHROUGH */
1659         }
1660 #endif
1661         case XPT_SCSI_IO:
1662                 /* XXX Fully implement the hard ones */
1663                 ccb->ccb_h.status = CAM_UA_ABORT;
1664                 break;
1665         default:
1666                 ccb->ccb_h.status = CAM_REQ_INVALID;
1667                 break;
1668         }
1669         xpt_done(ccb);
1670 }
1671
1672 void
1673 ahd_send_async(struct ahd_softc *ahd, char channel, u_int target,
1674                 u_int lun, ac_code code, void *opt_arg)
1675 {
1676         struct  ccb_trans_settings cts;
1677         struct cam_path *path;
1678         void *arg;
1679         int error;
1680
1681         arg = NULL;
1682         error = ahd_create_path(ahd, channel, target, lun, &path);
1683
1684         if (error != CAM_REQ_CMP)
1685                 return;
1686
1687         switch (code) {
1688         case AC_TRANSFER_NEG:
1689         {
1690 #ifdef AHD_NEW_TRAN_SETTINGS
1691                 struct  ccb_trans_settings_scsi *scsi;
1692
1693                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1694                 scsi = &cts.proto_specific.scsi;
1695 #else
1696                 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1697 #endif
1698                 cts.ccb_h.path = path;
1699                 cts.ccb_h.target_id = target;
1700                 cts.ccb_h.target_lun = lun;
1701                 ahd_get_tran_settings(ahd, ahd->our_id, channel, &cts);
1702                 arg = &cts;
1703 #ifdef AHD_NEW_TRAN_SETTINGS
1704                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1705                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1706 #else
1707                 cts.valid &= ~CCB_TRANS_TQ_VALID;
1708                 cts.flags &= ~CCB_TRANS_TAG_ENB;
1709 #endif
1710                 if (opt_arg == NULL)
1711                         break;
1712                 if (*((ahd_queue_alg *)opt_arg) == AHD_QUEUE_TAGGED)
1713 #ifdef AHD_NEW_TRAN_SETTINGS
1714                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1715                 scsi->valid |= CTS_SCSI_VALID_TQ;
1716 #else
1717                         cts.flags |= CCB_TRANS_TAG_ENB;
1718                 cts.valid |= CCB_TRANS_TQ_VALID;
1719 #endif
1720                 break;
1721         }
1722         case AC_SENT_BDR:
1723         case AC_BUS_RESET:
1724                 break;
1725         default:
1726                 panic("ahd_send_async: Unexpected async event");
1727         }
1728         xpt_async(code, path, arg);
1729         xpt_free_path(path);
1730 }
1731
1732 void
1733 ahd_platform_set_tags(struct ahd_softc *ahd,
1734                       struct ahd_devinfo *devinfo, int enable)
1735 {
1736 }
1737
1738 int
1739 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1740 {
1741         ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF,
1742             M_NOWAIT | M_ZERO);
1743         if (ahd->platform_data == NULL)
1744                 return (ENOMEM);
1745         return (0);
1746 }
1747
1748 void
1749 ahd_platform_free(struct ahd_softc *ahd)
1750 {
1751         struct ahd_platform_data *pdata;
1752
1753         pdata = ahd->platform_data;
1754         if (pdata != NULL) {
1755                 if (pdata->regs[0] != NULL)
1756                         bus_release_resource(ahd->dev_softc,
1757                                              pdata->regs_res_type[0],
1758                                              pdata->regs_res_id[0],
1759                                              pdata->regs[0]);
1760
1761                 if (pdata->regs[1] != NULL)
1762                         bus_release_resource(ahd->dev_softc,
1763                                              pdata->regs_res_type[1],
1764                                              pdata->regs_res_id[1],
1765                                              pdata->regs[1]);
1766
1767                 if (pdata->irq != NULL)
1768                         bus_release_resource(ahd->dev_softc,
1769                                              pdata->irq_res_type,
1770                                              0, pdata->irq);
1771
1772                 if (pdata->sim_b != NULL) {
1773                         xpt_async(AC_LOST_DEVICE, pdata->path_b, NULL);
1774                         xpt_free_path(pdata->path_b);
1775                         xpt_bus_deregister(cam_sim_path(pdata->sim_b));
1776                         cam_sim_free(pdata->sim_b, /*free_devq*/TRUE);
1777                 }
1778                 if (pdata->sim != NULL) {
1779                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1780                         xpt_free_path(pdata->path);
1781                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1782                         cam_sim_free(pdata->sim, /*free_devq*/TRUE);
1783                 }
1784                 if (pdata->eh != NULL)
1785                         EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
1786                 free(ahd->platform_data, M_DEVBUF);
1787         }
1788 }
1789
1790 int
1791 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
1792 {
1793         /* We don't sort softcs under FreeBSD so report equal always */
1794         return (0);
1795 }
1796
1797 int
1798 ahd_detach(device_t dev)
1799 {
1800         struct ahd_softc *ahd;
1801         u_long l;
1802         u_long s;
1803
1804         ahd_list_lock(&l);
1805         device_printf(dev, "detaching device\n");
1806         ahd = device_get_softc(dev);
1807         ahd = ahd_find_softc(ahd);
1808         if (ahd == NULL) {
1809                 device_printf(dev, "aic7xxx already detached\n");
1810                 ahd_list_unlock(&l);
1811                 return (ENOENT);
1812         }
1813         ahd_lock(ahd, &s);
1814         ahd_intr_enable(ahd, FALSE);
1815         bus_teardown_intr(dev, ahd->platform_data->irq, ahd->platform_data->ih);
1816         ahd_unlock(ahd, &s);
1817         ahd_free(ahd);
1818         ahd_list_unlock(&l);
1819         return (0);
1820 }
1821
1822 #if UNUSED
1823 static void
1824 ahd_dump_targcmd(struct target_cmd *cmd)
1825 {
1826         uint8_t *byte;
1827         uint8_t *last_byte;
1828         int i;
1829
1830         byte = &cmd->initiator_channel;
1831         /* Debugging info for received commands */
1832         last_byte = &cmd[1].initiator_channel;
1833
1834         i = 0;
1835         while (byte < last_byte) {
1836                 if (i == 0)
1837                         printf("\t");
1838                 printf("%#x", *byte++);
1839                 i++;
1840                 if (i == 8) {
1841                         printf("\n");
1842                         i = 0;
1843                 } else {
1844                         printf(", ");
1845                 }
1846         }
1847 }
1848 #endif
1849
1850 static int
1851 ahd_modevent(module_t mod, int type, void *data)
1852 {
1853         /* XXX Deal with busy status on unload. */
1854         return 0;
1855 }
1856
1857 static moduledata_t ahd_mod = {
1858         "ahd",
1859         ahd_modevent,
1860         NULL
1861 };
1862
1863 /********************************** DDB Hooks *********************************/
1864 #ifdef DDB
1865 static struct ahd_softc *ahd_ddb_softc;
1866 static int ahd_ddb_paused;
1867 static int ahd_ddb_paused_on_entry;
1868 DB_COMMAND(ahd_set_unit, ahd_ddb_set_unit)
1869 {
1870         struct ahd_softc *list_ahd;
1871
1872         ahd_ddb_softc = NULL;
1873         TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
1874                 if (list_ahd->unit == addr)
1875                         ahd_ddb_softc = list_ahd;
1876         }
1877         if (ahd_ddb_softc == NULL)
1878                 db_error("No matching softc found!\n");
1879 }
1880
1881 DB_COMMAND(ahd_pause, ahd_ddb_pause)
1882 {
1883         if (ahd_ddb_softc == NULL) {
1884                 db_error("Must set unit with ahd_set_unit first!\n");
1885                 return;
1886         }
1887         if (ahd_ddb_paused == 0) {
1888                 ahd_ddb_paused++;
1889                 if (ahd_is_paused(ahd_ddb_softc)) {
1890                         ahd_ddb_paused_on_entry++;
1891                         return;
1892                 }
1893                 ahd_pause(ahd_ddb_softc);
1894         }
1895 }
1896
1897 DB_COMMAND(ahd_unpause, ahd_ddb_unpause)
1898 {
1899         if (ahd_ddb_softc == NULL) {
1900                 db_error("Must set unit with ahd_set_unit first!\n");
1901                 return;
1902         }
1903         if (ahd_ddb_paused != 0) {
1904                 ahd_ddb_paused = 0;
1905                 if (ahd_ddb_paused_on_entry)
1906                         return;
1907                 ahd_unpause(ahd_ddb_softc);
1908         } else if (ahd_ddb_paused_on_entry != 0) {
1909                 /* Two unpauses to clear a paused on entry. */
1910                 ahd_ddb_paused_on_entry = 0;
1911                 ahd_unpause(ahd_ddb_softc);
1912         }
1913 }
1914
1915 DB_COMMAND(ahd_in, ahd_ddb_in)
1916 {
1917         int c;
1918         int size;
1919
1920         if (ahd_ddb_softc == NULL) {
1921                 db_error("Must set unit with ahd_set_unit first!\n");
1922                 return;
1923         }
1924         if (have_addr == 0)
1925                 return;
1926
1927         size = 1;
1928         while ((c = *modif++) != '\0') {
1929                 switch (c) {
1930                 case 'b':
1931                         size = 1;
1932                         break;
1933                 case 'w':
1934                         size = 2;
1935                         break;
1936                 case 'l':
1937                         size = 4;
1938                 break;
1939                 }
1940         }
1941
1942         if (count <= 0)
1943                 count = 1;
1944         while (--count >= 0) {
1945                 db_printf("%04lx (M)%x: \t", (u_long)addr,
1946                           ahd_inb(ahd_ddb_softc, MODE_PTR));
1947                 switch (size) {
1948                 case 1:
1949                         db_printf("%02x\n", ahd_inb(ahd_ddb_softc, addr));
1950                         break;
1951                 case 2:
1952                         db_printf("%04x\n", ahd_inw(ahd_ddb_softc, addr));
1953                         break;
1954                 case 4:
1955                         db_printf("%08x\n", ahd_inl(ahd_ddb_softc, addr));
1956                         break;
1957                 }
1958         }
1959 }
1960
1961 DB_SET(ahd_out, ahd_ddb_out, db_cmd_set, CS_MORE, NULL)
1962 {
1963         db_expr_t old_value;
1964         db_expr_t new_value;
1965         int       size;
1966
1967         if (ahd_ddb_softc == NULL) {
1968                 db_error("Must set unit with ahd_set_unit first!\n");
1969                 return;
1970         }
1971
1972         switch (modif[0]) {
1973         case '\0':
1974         case 'b':
1975                 size = 1;
1976                 break;
1977         case 'h':
1978                 size = 2;
1979                 break;
1980         case 'l':
1981                 size = 4;
1982                 break;
1983         default:
1984                 db_error("Unknown size\n");
1985                 return;
1986         }
1987
1988         while (db_expression(&new_value)) {
1989                 switch (size) {
1990                 default:
1991                 case 1:
1992                         old_value = ahd_inb(ahd_ddb_softc, addr);
1993                         ahd_outb(ahd_ddb_softc, addr, new_value);
1994                         break;
1995                 case 2:
1996                         old_value = ahd_inw(ahd_ddb_softc, addr);
1997                         ahd_outw(ahd_ddb_softc, addr, new_value);
1998                         break;
1999                 case 4:
2000                         old_value = ahd_inl(ahd_ddb_softc, addr);
2001                         ahd_outl(ahd_ddb_softc, addr, new_value);
2002                         break;
2003                 }
2004                 db_printf("%04lx (M)%x: \t0x%lx\t=\t0x%lx",
2005                           (u_long)addr, ahd_inb(ahd_ddb_softc, MODE_PTR),
2006                           (u_long)old_value, (u_long)new_value);
2007                 addr += size;
2008         }
2009         db_skip_to_eol();
2010 }
2011
2012 #endif
2013
2014
2015 DECLARE_MODULE(ahd, ahd_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
2016 MODULE_DEPEND(ahd, cam, 1, 1, 1);
2017 MODULE_VERSION(ahd, 1);