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 1.12 2007/01/27 15:03:25 swildner 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                                0, ahd_platform_intr, ahd,
 103                                &ahd->platform_data->ih, NULL);
 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_sim *sim;
 119         struct cam_path *path;
 120         int count;
 121
 122         count = 0;
 123         sim = NULL;
 124
 125         ahd_controller_info(ahd, ahd_info);
 126         kprintf("%s\n", ahd_info);
 127         ahd_lock();
 128
 129         /*
 130          * Construct our SIM entry
 131          */
 132         sim = cam_sim_alloc(ahd_action, ahd_poll, "ahd", ahd,
 133                             device_get_unit(ahd->dev_softc),
 134                             1, AHD_MAX_QUEUE, NULL);
 135         if (sim == NULL)
 136                 goto fail;
 137
 138         if (xpt_bus_register(sim, /*bus_id*/0) != CAM_SUCCESS) {
 139                 cam_sim_free(sim);
 140                 sim = NULL;
 141                 goto fail;
 142         }
 143
 144         if (xpt_create_path(&path, /*periph*/NULL,
 145                             cam_sim_path(sim), CAM_TARGET_WILDCARD,
 146                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 147                 xpt_bus_deregister(cam_sim_path(sim));
 148                 cam_sim_free(sim);
 149                 sim = NULL;
 150                 goto fail;
 151         }
 152
 153         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 154         csa.ccb_h.func_code = XPT_SASYNC_CB;
 155         csa.event_enable = AC_LOST_DEVICE;
 156         csa.callback = ahd_async;
 157         csa.callback_arg = sim;
 158         xpt_action((union ccb *)&csa);
 159         count++;
 160
 161 fail:
 162         ahd->platform_data->sim = sim;
 163         ahd->platform_data->path = path;
 164         if (count != 0) {
 165                 /* We have to wait until after any system dumps... */
 166                 ahd->platform_data->eh =
 167                     EVENTHANDLER_REGISTER(shutdown_final, ahd_shutdown,
 168                                           ahd, SHUTDOWN_PRI_DEFAULT);
 169                 ahd_intr_enable(ahd, TRUE);
 170         }
 171
 172         ahd_unlock();
 173
 174         return (count);
 175 }
 176
 177 /*
 178  * Catch an interrupt from the adapter
 179  */
 180 void
 181 ahd_platform_intr(void *arg)
 182 {
 183         struct  ahd_softc *ahd;
 184
 185         ahd = (struct ahd_softc *)arg;
 186         ahd_intr(ahd);
 187 }
 188
 189 /*
 190  * We have an scb which has been processed by the
 191  * adaptor, now we look to see how the operation
 192  * went.
 193  */
 194 void
 195 ahd_done(struct ahd_softc *ahd, struct scb *scb)
 196 {
 197         union ccb *ccb;
 198
 199         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
 200                   ("ahd_done - scb %d\n", SCB_GET_TAG(scb)));
 201
 202         ccb = scb->io_ctx;
 203         LIST_REMOVE(scb, pending_links);
 204
 205         callout_stop(&ccb->ccb_h.timeout_ch);
 206
 207         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 208                 bus_dmasync_op_t op;
 209
 210                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 211                         op = BUS_DMASYNC_POSTREAD;
 212                 else
 213                         op = BUS_DMASYNC_POSTWRITE;
 214                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
 215                 bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
 216         }
 217
 218 #ifdef AHD_TARGET_MODE
 219         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 220                 struct cam_path *ccb_path;
 221
 222                 /*
 223                  * If we have finally disconnected, clean up our
 224                  * pending device state.
 225                  * XXX - There may be error states that cause where
 226                  *       we will remain connected.
 227                  */
 228                 ccb_path = ccb->ccb_h.path;
 229                 if (ahd->pending_device != NULL
 230                  && xpt_path_comp(ahd->pending_device->path, ccb_path) == 0) {
 231
 232                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 233                                 ahd->pending_device = NULL;
 234                         } else {
 235                                 xpt_print_path(ccb->ccb_h.path);
 236                                 kprintf("Still disconnected\n");
 237                                 ahd_freeze_ccb(ccb);
 238                         }
 239                 }
 240
 241                 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG)
 242                         ccb->ccb_h.status |= CAM_REQ_CMP;
 243                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 244                 ahd_free_scb(ahd, scb);
 245                 xpt_done(ccb);
 246                 return;
 247         }
 248 #endif
 249
 250         /*
 251          * If the recovery SCB completes, we have to be
 252          * out of our timeout.
 253          */
 254         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
 255                 struct  scb *list_scb;
 256
 257                 /*
 258                  * We were able to complete the command successfully,
 259                  * so reinstate the timeouts for all other pending
 260                  * commands.
 261                  */
 262                 LIST_FOREACH(list_scb, &ahd->pending_scbs, pending_links) {
 263                         union ccb *ccb;
 264                         uint64_t time;
 265
 266                         ccb = list_scb->io_ctx;
 267                         if (ccb->ccb_h.timeout == CAM_TIME_INFINITY)
 268                                 continue;
 269
 270                         time = ccb->ccb_h.timeout;
 271                         time *= hz;
 272                         time /= 1000;
 273                         callout_reset(&ccb->ccb_h.timeout_ch, time,
 274                             ahd_timeout, list_scb);
 275                 }
 276
 277                 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
 278                  || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
 279                         ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
 280                 ahd_print_path(ahd, scb);
 281                 kprintf("no longer in timeout, status = %x\n",
 282                        ccb->ccb_h.status);
 283         }
 284
 285         /* Don't clobber any existing error state */
 286         if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
 287                 ccb->ccb_h.status |= CAM_REQ_CMP;
 288         } else if ((scb->flags & SCB_SENSE) != 0) {
 289                 /*
 290                  * We performed autosense retrieval.
 291                  *
 292                  * Zero any sense not transferred by the
 293                  * device.  The SCSI spec mandates that any
 294                  * untransfered data should be assumed to be
 295                  * zero.  Complete the 'bounce' of sense information
 296                  * through buffers accessible via bus-space by
 297                  * copying it into the clients csio.
 298                  */
 299                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 300                 memcpy(&ccb->csio.sense_data,
 301                        ahd_get_sense_buf(ahd, scb),
 302 /* XXX What size do we want to use??? */
 303                         sizeof(ccb->csio.sense_data)
 304                        - ccb->csio.sense_resid);
 305                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 306         } else if ((scb->flags & SCB_PKT_SENSE) != 0) {
 307                 struct scsi_status_iu_header *siu;
 308                 u_int sense_len;
 309                 int i;
 310
 311                 /*
 312                  * Copy only the sense data into the provided buffer.
 313                  */
 314                 siu = (struct scsi_status_iu_header *)scb->sense_data;
 315                 sense_len = MIN(scsi_4btoul(siu->sense_length),
 316                                 sizeof(ccb->csio.sense_data));
 317                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 318                 memcpy(&ccb->csio.sense_data,
 319                        ahd_get_sense_buf(ahd, scb) + SIU_SENSE_OFFSET(siu),
 320                        sense_len);
 321                 kprintf("Copied %d bytes of sense data offset %d:", sense_len,
 322                        SIU_SENSE_OFFSET(siu));
 323                 for (i = 0; i < sense_len; i++)
 324                         kprintf(" 0x%x", ((uint8_t *)&ccb->csio.sense_data)[i]);
 325                 kprintf("\n");
 326                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 327         }
 328         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 329         ahd_free_scb(ahd, scb);
 330         xpt_done(ccb);
 331 }
 332
 333 static void
 334 ahd_action(struct cam_sim *sim, union ccb *ccb)
 335 {
 336         struct  ahd_softc *ahd;
 337 #ifdef AHD_TARGET_MODE
 338         struct  ahd_tmode_lstate *lstate;
 339 #endif
 340         u_int   target_id;
 341         u_int   our_id;
 342
 343         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahd_action\n"));
 344
 345         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 346
 347         target_id = ccb->ccb_h.target_id;
 348         our_id = SIM_SCSI_ID(ahd, sim);
 349
 350         switch (ccb->ccb_h.func_code) {
 351         /* Common cases first */
 352 #ifdef AHD_TARGET_MODE
 353         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 354         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 355         {
 356                 struct     ahd_tmode_tstate *tstate;
 357                 cam_status status;
 358
 359                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 360                                              &lstate, TRUE);
 361
 362                 if (status != CAM_REQ_CMP) {
 363                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 364                                 /* Response from the black hole device */
 365                                 tstate = NULL;
 366                                 lstate = ahd->black_hole;
 367                         } else {
 368                                 ccb->ccb_h.status = status;
 369                                 xpt_done(ccb);
 370                                 break;
 371                         }
 372                 }
 373                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 374
 375                         ahd_lock();
 376                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 377                                           sim_links.sle);
 378                         ccb->ccb_h.status = CAM_REQ_INPROG;
 379                         if ((ahd->flags & AHD_TQINFIFO_BLOCKED) != 0)
 380                                 ahd_run_tqinfifo(ahd, /*paused*/FALSE);
 381                         ahd_unlock();
 382                         break;
 383                 }
 384
 385                 /*
 386                  * The target_id represents the target we attempt to
 387                  * select.  In target mode, this is the initiator of
 388                  * the original command.
 389                  */
 390                 our_id = target_id;
 391                 target_id = ccb->csio.init_id;
 392                 /* FALLTHROUGH */
 393         }
 394 #endif
 395         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 396         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 397         {
 398                 struct  scb *scb;
 399                 struct  hardware_scb *hscb;
 400                 struct  ahd_initiator_tinfo *tinfo;
 401                 struct  ahd_tmode_tstate *tstate;
 402                 u_int   col_idx;
 403
 404                 if ((ahd->flags & AHD_INITIATORROLE) == 0
 405                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 406                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 407                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 408                         xpt_done(ccb);
 409                         return;
 410                 }
 411
 412                 /*
 413                  * get an scb to use.
 414                  */
 415                 ahd_lock();
 416                 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
 417                                             target_id, &tstate);
 418                 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
 419                  || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
 420                  || ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 421                         col_idx = AHD_NEVER_COL_IDX;
 422                 } else {
 423                         col_idx = AHD_BUILD_COL_IDX(target_id,
 424                                                     ccb->ccb_h.target_lun);
 425                 }
 426                 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
 427
 428                         xpt_freeze_simq(sim, /*count*/1);
 429                         ahd->flags |= AHD_RESOURCE_SHORTAGE;
 430                         ahd_unlock();
 431                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 432                         xpt_done(ccb);
 433                         return;
 434                 }
 435                 ahd_unlock();
 436
 437                 hscb = scb->hscb;
 438
 439                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 440                           ("start scb(%p)\n", scb));
 441                 scb->io_ctx = ccb;
 442                 /*
 443                  * So we can find the SCB when an abort is requested
 444                  */
 445                 ccb->ccb_h.ccb_scb_ptr = scb;
 446
 447                 /*
 448                  * Put all the arguments for the xfer in the scb
 449                  */
 450                 hscb->control = 0;
 451                 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id);
 452                 hscb->lun = ccb->ccb_h.target_lun;
 453                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 454                         hscb->cdb_len = 0;
 455                         scb->flags |= SCB_DEVICE_RESET;
 456                         hscb->control |= MK_MESSAGE;
 457                         hscb->task_management = SIU_TASKMGMT_LUN_RESET;
 458                         ahd_execute_scb(scb, NULL, 0, 0);
 459                 } else {
 460 #ifdef AHD_TARGET_MODE
 461                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 462                                 struct target_data *tdata;
 463
 464                                 tdata = &hscb->shared_data.tdata;
 465                                 if (ahd->pending_device == lstate)
 466                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 467                                 hscb->control |= TARGET_SCB;
 468                                 tdata->target_phases = 0;
 469                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 470                                         tdata->target_phases |= SPHASE_PENDING;
 471                                         tdata->scsi_status =
 472                                             ccb->csio.scsi_status;
 473                                 }
 474                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 475                                         tdata->target_phases |= NO_DISCONNECT;
 476
 477                                 tdata->initiator_tag =
 478                                     ahd_htole16(ccb->csio.tag_id);
 479                         }
 480 #endif
 481                         hscb->task_management = 0;
 482                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 483                                 hscb->control |= ccb->csio.tag_action;
 484
 485                         ahd_setup_data(ahd, sim, &ccb->csio, scb);
 486                 }
 487                 break;
 488         }
 489 #ifdef AHD_TARGET_MODE
 490         case XPT_NOTIFY_ACK:
 491         case XPT_IMMED_NOTIFY:
 492         {
 493                 struct     ahd_tmode_tstate *tstate;
 494                 struct     ahd_tmode_lstate *lstate;
 495                 cam_status status;
 496
 497                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
 498                                              &lstate, TRUE);
 499
 500                 if (status != CAM_REQ_CMP) {
 501                         ccb->ccb_h.status = status;
 502                         xpt_done(ccb);
 503                         break;
 504                 }
 505                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 506                                   sim_links.sle);
 507                 ccb->ccb_h.status = CAM_REQ_INPROG;
 508                 ahd_send_lstate_events(ahd, lstate);
 509                 break;
 510         }
 511         case XPT_EN_LUN:                /* Enable LUN as a target */
 512                 ahd_handle_en_lun(ahd, sim, ccb);
 513                 xpt_done(ccb);
 514                 break;
 515 #endif
 516         case XPT_ABORT:                 /* Abort the specified CCB */
 517         {
 518                 ahd_abort_ccb(ahd, sim, ccb);
 519                 break;
 520         }
 521         case XPT_SET_TRAN_SETTINGS:
 522         {
 523                 ahd_lock();
 524                 ahd_set_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 525                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 526                 ahd_unlock();
 527                 xpt_done(ccb);
 528                 break;
 529         }
 530         case XPT_GET_TRAN_SETTINGS:
 531         /* Get default/user set transfer settings for the target */
 532         {
 533                 ahd_lock();
 534                 ahd_get_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
 535                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
 536                 ahd_unlock();
 537                 xpt_done(ccb);
 538                 break;
 539         }
 540         case XPT_CALC_GEOMETRY:
 541         {
 542                 struct    ccb_calc_geometry *ccg;
 543                 uint32_t size_mb;
 544                 uint32_t secs_per_cylinder;
 545                 int       extended;
 546
 547                 ccg = &ccb->ccg;
 548                 size_mb = ccg->volume_size
 549                         / ((1024L * 1024L) / ccg->block_size);
 550                 extended = ahd->flags & AHD_EXTENDED_TRANS_A;
 551
 552                 if (size_mb > 1024 && extended) {
 553                         ccg->heads = 255;
 554                         ccg->secs_per_track = 63;
 555                 } else {
 556                         ccg->heads = 64;
 557                         ccg->secs_per_track = 32;
 558                 }
 559                 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
 560                 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
 561                 ccb->ccb_h.status = CAM_REQ_CMP;
 562                 xpt_done(ccb);
 563                 break;
 564         }
 565         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 566         {
 567                 int  found;
 568
 569                 ahd_lock();
 570                 found = ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
 571                                           /*initiate reset*/TRUE);
 572                 ahd_unlock();
 573                 if (bootverbose) {
 574                         xpt_print_path(SIM_PATH(ahd, sim));
 575                         kprintf("SCSI bus reset delivered. "
 576                                "%d SCBs aborted.\n", found);
 577                 }
 578                 ccb->ccb_h.status = CAM_REQ_CMP;
 579                 xpt_done(ccb);
 580                 break;
 581         }
 582         case XPT_TERM_IO:               /* Terminate the I/O process */
 583                 /* XXX Implement */
 584                 ccb->ccb_h.status = CAM_REQ_INVALID;
 585                 xpt_done(ccb);
 586                 break;
 587         case XPT_PATH_INQ:              /* Path routing inquiry */
 588         {
 589                 struct ccb_pathinq *cpi = &ccb->cpi;
 590
 591                 cpi->version_num = 1; /* XXX??? */
 592                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 593                 if ((ahd->features & AHD_WIDE) != 0)
 594                         cpi->hba_inquiry |= PI_WIDE_16;
 595                 if ((ahd->features & AHD_TARGETMODE) != 0) {
 596                         cpi->target_sprt = PIT_PROCESSOR
 597                                          | PIT_DISCONNECT
 598                                          | PIT_TERM_IO;
 599                 } else {
 600                         cpi->target_sprt = 0;
 601                 }
 602                 cpi->hba_misc = 0;
 603                 cpi->hba_eng_cnt = 0;
 604                 cpi->max_target = (ahd->features & AHD_WIDE) ? 15 : 7;
 605                 cpi->max_lun = AHD_NUM_LUNS - 1;
 606                 cpi->initiator_id = ahd->our_id;
 607                 if ((ahd->flags & AHD_RESET_BUS_A) == 0) {
 608                         cpi->hba_misc |= PIM_NOBUSRESET;
 609                 }
 610                 cpi->bus_id = cam_sim_bus(sim);
 611                 cpi->base_transfer_speed = 3300;
 612                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 613                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 614                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 615                 cpi->unit_number = cam_sim_unit(sim);
 616 #ifdef AHD_NEW_TRAN_SETTINGS
 617                 cpi->protocol = PROTO_SCSI;
 618                 cpi->protocol_version = SCSI_REV_2;
 619                 cpi->transport = XPORT_SPI;
 620                 cpi->transport_version = 2;
 621                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
 622                 cpi->transport_version = 4;
 623                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST;
 624 #endif
 625                 cpi->ccb_h.status = CAM_REQ_CMP;
 626                 xpt_done(ccb);
 627                 break;
 628         }
 629         default:
 630                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 631                 xpt_done(ccb);
 632                 break;
 633         }
 634 }
 635
 636
 637 static void
 638 ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 639                       struct ccb_trans_settings *cts)
 640 {
 641 #ifdef AHD_NEW_TRAN_SETTINGS
 642         struct    ahd_devinfo devinfo;
 643         struct    ccb_trans_settings_scsi *scsi;
 644         struct    ccb_trans_settings_spi *spi;
 645         struct    ahd_initiator_tinfo *tinfo;
 646         struct    ahd_tmode_tstate *tstate;
 647         uint16_t *discenable;
 648         uint16_t *tagenable;
 649         u_int     update_type;
 650
 651         scsi = &cts->proto_specific.scsi;
 652         spi = &cts->xport_specific.spi;
 653         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 654                             cts->ccb_h.target_id,
 655                             cts->ccb_h.target_lun,
 656                             SIM_CHANNEL(ahd, sim),
 657                             ROLE_UNKNOWN);
 658         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
 659                                     devinfo.our_scsiid,
 660                                     devinfo.target, &tstate);
 661         update_type = 0;
 662         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 663                 update_type |= AHD_TRANS_GOAL;
 664                 discenable = &tstate->discenable;
 665                 tagenable = &tstate->tagenable;
 666                 tinfo->curr.protocol_version = cts->protocol_version;
 667                 tinfo->curr.transport_version = cts->transport_version;
 668                 tinfo->goal.protocol_version = cts->protocol_version;
 669                 tinfo->goal.transport_version = cts->transport_version;
 670         } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 671                 update_type |= AHD_TRANS_USER;
 672                 discenable = &ahd->user_discenable;
 673                 tagenable = &ahd->user_tagenable;
 674                 tinfo->user.protocol_version = cts->protocol_version;
 675                 tinfo->user.transport_version = cts->transport_version;
 676         } else {
 677                 cts->ccb_h.status = CAM_REQ_INVALID;
 678                 return;
 679         }
 680
 681         if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 682                 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 683                         *discenable |= devinfo.target_mask;
 684                 else
 685                         *discenable &= ~devinfo.target_mask;
 686         }
 687
 688         if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 689                 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 690                         *tagenable |= devinfo.target_mask;
 691                 else
 692                         *tagenable &= ~devinfo.target_mask;
 693         }
 694
 695         if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 696                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
 697                                    &spi->bus_width, ROLE_UNKNOWN);
 698                 ahd_set_width(ahd, &devinfo, spi->bus_width,
 699                               update_type, /*paused*/FALSE);
 700         }
 701
 702         if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 703                 if (update_type == AHD_TRANS_USER)
 704                         spi->ppr_options = tinfo->user.ppr_options;
 705                 else
 706                         spi->ppr_options = tinfo->goal.ppr_options;
 707         }
 708
 709         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 710                 if (update_type == AHD_TRANS_USER)
 711                         spi->sync_offset = tinfo->user.offset;
 712                 else
 713                         spi->sync_offset = tinfo->goal.offset;
 714         }
 715
 716         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 717                 if (update_type == AHD_TRANS_USER)
 718                         spi->sync_period = tinfo->user.period;
 719                 else
 720                         spi->sync_period = tinfo->goal.period;
 721         }
 722
 723         if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 724          || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 725                 u_int   maxsync;
 726
 727                 maxsync = AHD_SYNCRATE_MAX;
 728
 729                 if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 730                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 731
 732                 if ((*discenable & devinfo.target_mask) == 0)
 733                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
 734
 735                 ahd_find_syncrate(ahd, &spi->sync_period,
 736                                   &spi->ppr_options, maxsync);
 737                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
 738                                     spi->sync_period, &spi->sync_offset,
 739                                     spi->bus_width, ROLE_UNKNOWN);
 740
 741                 /* We use a period of 0 to represent async */
 742                 if (spi->sync_offset == 0) {
 743                         spi->sync_period = 0;
 744                         spi->ppr_options = 0;
 745                 }
 746
 747                 ahd_set_syncrate(ahd, &devinfo, spi->sync_period,
 748                                  spi->sync_offset, spi->ppr_options,
 749                                  update_type, /*paused*/FALSE);
 750         }
 751         cts->ccb_h.status = CAM_REQ_CMP;
 752 #else
 753         struct    ahd_devinfo devinfo;
 754         struct    ahd_initiator_tinfo *tinfo;
 755         struct    ahd_tmode_tstate *tstate;
 756         uint16_t *discenable;
 757         uint16_t *tagenable;
 758         u_int     update_type;
 759
 760         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 761                             cts->ccb_h.target_id,
 762                             cts->ccb_h.target_lun,
 763                             SIM_CHANNEL(ahd, sim),
 764                             ROLE_UNKNOWN);
 765         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
 766                                     devinfo.our_scsiid,
 767                                     devinfo.target, &tstate);
 768         update_type = 0;
 769         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) {
 770                 update_type |= AHD_TRANS_GOAL;
 771                 discenable = &tstate->discenable;
 772                 tagenable = &tstate->tagenable;
 773         } else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
 774                 update_type |= AHD_TRANS_USER;
 775                 discenable = &ahd->user_discenable;
 776                 tagenable = &ahd->user_tagenable;
 777         } else {
 778                 cts->ccb_h.status = CAM_REQ_INVALID;
 779                 return;
 780         }
 781
 782         if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
 783                 if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
 784                         *discenable |= devinfo.target_mask;
 785                 else
 786                         *discenable &= ~devinfo.target_mask;
 787         }
 788
 789         if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
 790                 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
 791                         *tagenable |= devinfo.target_mask;
 792                 else
 793                         *tagenable &= ~devinfo.target_mask;
 794         }
 795
 796         if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
 797                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
 798                                    &cts->bus_width, ROLE_UNKNOWN);
 799                 ahd_set_width(ahd, &devinfo, cts->bus_width,
 800                               update_type, /*paused*/FALSE);
 801         }
 802
 803         if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) {
 804                 if (update_type == AHD_TRANS_USER)
 805                         cts->sync_offset = tinfo->user.offset;
 806                 else
 807                         cts->sync_offset = tinfo->goal.offset;
 808         }
 809
 810         if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) {
 811                 if (update_type == AHD_TRANS_USER)
 812                         cts->sync_period = tinfo->user.period;
 813                 else
 814                         cts->sync_period = tinfo->goal.period;
 815         }
 816
 817         if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
 818          || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)
 819          || ((cts->valid & CCB_TRANS_TQ_VALID) != 0)
 820          || ((cts->valid & CCB_TRANS_DISC_VALID) != 0)) {
 821                 u_int ppr_options;
 822                 u_int maxsync;
 823
 824                 maxsync = AHD_SYNCRATE_MAX;
 825                 ppr_options = 0;
 826                 if (cts->sync_period <= AHD_SYNCRATE_DT
 827                  && cts->bus_width == MSG_EXT_WDTR_BUS_16_BIT) {
 828                         ppr_options = tinfo->user.ppr_options
 829                                     | MSG_EXT_PPR_DT_REQ;
 830                 }
 831
 832                 if ((*tagenable & devinfo.target_mask) == 0
 833                  || (*discenable & devinfo.target_mask) == 0)
 834                         ppr_options &= ~MSG_EXT_PPR_IU_REQ;
 835
 836                 ahd_find_syncrate(ahd, &cts->sync_period,
 837                                   &ppr_options, maxsync);
 838                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
 839                                     cts->sync_period, &cts->sync_offset,
 840                                     MSG_EXT_WDTR_BUS_8_BIT,
 841                                     ROLE_UNKNOWN);
 842
 843                 /* We use a period of 0 to represent async */
 844                 if (cts->sync_offset == 0) {
 845                         cts->sync_period = 0;
 846                         ppr_options = 0;
 847                 }
 848
 849                 if (ppr_options != 0
 850                  && tinfo->user.transport_version >= 3) {
 851                         tinfo->goal.transport_version =
 852                             tinfo->user.transport_version;
 853                         tinfo->curr.transport_version =
 854                             tinfo->user.transport_version;
 855                 }
 856
 857                 ahd_set_syncrate(ahd, &devinfo, cts->sync_period,
 858                                  cts->sync_offset, ppr_options,
 859                                  update_type, /*paused*/FALSE);
 860         }
 861         cts->ccb_h.status = CAM_REQ_CMP;
 862 #endif
 863 }
 864
 865 static void
 866 ahd_get_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
 867                       struct ccb_trans_settings *cts)
 868 {
 869 #ifdef AHD_NEW_TRAN_SETTINGS
 870         struct  ahd_devinfo devinfo;
 871         struct  ccb_trans_settings_scsi *scsi;
 872         struct  ccb_trans_settings_spi *spi;
 873         struct  ahd_initiator_tinfo *targ_info;
 874         struct  ahd_tmode_tstate *tstate;
 875         struct  ahd_transinfo *tinfo;
 876
 877         scsi = &cts->proto_specific.scsi;
 878         spi = &cts->xport_specific.spi;
 879         ahd_compile_devinfo(&devinfo, our_id,
 880                             cts->ccb_h.target_id,
 881                             cts->ccb_h.target_lun,
 882                             channel, ROLE_UNKNOWN);
 883         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
 884                                         devinfo.our_scsiid,
 885                                         devinfo.target, &tstate);
 886
 887         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 888                 tinfo = &targ_info->curr;
 889         else
 890                 tinfo = &targ_info->user;
 891
 892         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 893         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 894         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 895                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
 896                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 897
 898                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
 899                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 900         } else {
 901                 if ((tstate->discenable & devinfo.target_mask) != 0)
 902                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 903
 904                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 905                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 906         }
 907         cts->protocol_version = tinfo->protocol_version;
 908         cts->transport_version = tinfo->transport_version;
 909
 910         spi->sync_period = tinfo->period;
 911         spi->sync_offset = tinfo->offset;
 912         spi->bus_width = tinfo->width;
 913         spi->ppr_options = tinfo->ppr_options;
 914
 915         cts->protocol = PROTO_SCSI;
 916         cts->transport = XPORT_SPI;
 917         spi->valid = CTS_SPI_VALID_SYNC_RATE
 918                    | CTS_SPI_VALID_SYNC_OFFSET
 919                    | CTS_SPI_VALID_BUS_WIDTH
 920                    | CTS_SPI_VALID_PPR_OPTIONS;
 921
 922         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
 923                 scsi->valid = CTS_SCSI_VALID_TQ;
 924                 spi->valid |= CTS_SPI_VALID_DISC;
 925         } else {
 926                 scsi->valid = 0;
 927         }
 928
 929         cts->ccb_h.status = CAM_REQ_CMP;
 930 #else
 931         struct  ahd_devinfo devinfo;
 932         struct  ahd_initiator_tinfo *targ_info;
 933         struct  ahd_tmode_tstate *tstate;
 934         struct  ahd_transinfo *tinfo;
 935
 936         ahd_compile_devinfo(&devinfo, our_id,
 937                             cts->ccb_h.target_id,
 938                             cts->ccb_h.target_lun,
 939                             channel, ROLE_UNKNOWN);
 940         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
 941                                         devinfo.our_scsiid,
 942                                         devinfo.target, &tstate);
 943
 944         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
 945                 tinfo = &targ_info->curr;
 946         else
 947                 tinfo = &targ_info->user;
 948
 949         cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
 950         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) == 0) {
 951                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
 952                         cts->flags |= CCB_TRANS_DISC_ENB;
 953
 954                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
 955                         cts->flags |= CCB_TRANS_TAG_ENB;
 956         } else {
 957                 if ((tstate->discenable & devinfo.target_mask) != 0)
 958                         cts->flags |= CCB_TRANS_DISC_ENB;
 959
 960                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 961                         cts->flags |= CCB_TRANS_TAG_ENB;
 962         }
 963         cts->sync_period = tinfo->period;
 964         cts->sync_offset = tinfo->offset;
 965         cts->bus_width = tinfo->width;
 966
 967         cts->valid = CCB_TRANS_SYNC_RATE_VALID
 968                    | CCB_TRANS_SYNC_OFFSET_VALID
 969                    | CCB_TRANS_BUS_WIDTH_VALID;
 970
 971         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD)
 972                 cts->valid |= CCB_TRANS_DISC_VALID|CCB_TRANS_TQ_VALID;
 973
 974         cts->ccb_h.status = CAM_REQ_CMP;
 975 #endif
 976 }
 977
 978 static void
 979 ahd_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
 980 {
 981         struct ahd_softc *ahd;
 982         struct cam_sim *sim;
 983
 984         sim = (struct cam_sim *)callback_arg;
 985         ahd = (struct ahd_softc *)cam_sim_softc(sim);
 986         switch (code) {
 987         case AC_LOST_DEVICE:
 988         {
 989                 struct  ahd_devinfo devinfo;
 990
 991                 ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
 992                                     xpt_path_target_id(path),
 993                                     xpt_path_lun_id(path),
 994                                     SIM_CHANNEL(ahd, sim),
 995                                     ROLE_UNKNOWN);
 996
 997                 /*
 998                  * Revert to async/narrow transfers
 999                  * for the next device.
1000                  */
1001                 ahd_lock();
1002                 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
1003                               AHD_TRANS_GOAL|AHD_TRANS_CUR, /*paused*/FALSE);
1004                 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
1005                                  /*ppr_options*/0, AHD_TRANS_GOAL|AHD_TRANS_CUR,
1006                                  /*paused*/FALSE);
1007                 ahd_unlock();
1008                 break;
1009         }
1010         default:
1011                 break;
1012         }
1013 }
1014
1015 static void
1016 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
1017                 int error)
1018 {
1019         struct  scb *scb;
1020         union   ccb *ccb;
1021         struct  ahd_softc *ahd;
1022         struct  ahd_initiator_tinfo *tinfo;
1023         struct  ahd_tmode_tstate *tstate;
1024         u_int   mask;
1025
1026         scb = (struct scb *)arg;
1027         ccb = scb->io_ctx;
1028         ahd = scb->ahd_softc;
1029
1030         if (error != 0) {
1031                 if (error == EFBIG)
1032                         ahd_set_transaction_status(scb, CAM_REQ_TOO_BIG);
1033                 else
1034                         ahd_set_transaction_status(scb, CAM_REQ_CMP_ERR);
1035                 if (nsegments != 0)
1036                         bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
1037                 ahd_lock();
1038                 ahd_free_scb(ahd, scb);
1039                 ahd_unlock();
1040                 xpt_done(ccb);
1041                 return;
1042         }
1043         scb->sg_count = 0;
1044         if (nsegments != 0) {
1045                 void *sg;
1046                 bus_dmasync_op_t op;
1047                 u_int i;
1048
1049                 /* Copy the segments into our SG list */
1050                 for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
1051
1052                         sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
1053                                           dm_segs->ds_len,
1054                                           /*last*/i == 1);
1055                         dm_segs++;
1056                 }
1057
1058                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1059                         op = BUS_DMASYNC_PREREAD;
1060                 else
1061                         op = BUS_DMASYNC_PREWRITE;
1062
1063                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
1064
1065                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
1066                         struct target_data *tdata;
1067
1068                         tdata = &scb->hscb->shared_data.tdata;
1069                         tdata->target_phases |= DPHASE_PENDING;
1070                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
1071                                 tdata->data_phase = P_DATAOUT;
1072                         else
1073                                 tdata->data_phase = P_DATAIN;
1074                 }
1075         }
1076
1077         ahd_lock();
1078
1079         /*
1080          * Last time we need to check if this SCB needs to
1081          * be aborted.
1082          */
1083         if (ahd_get_transaction_status(scb) != CAM_REQ_INPROG) {
1084                 if (nsegments != 0)
1085                         bus_dmamap_unload(ahd->buffer_dmat,
1086                                           scb->dmamap);
1087                 ahd_free_scb(ahd, scb);
1088                 ahd_unlock();
1089                 xpt_done(ccb);
1090                 return;
1091         }
1092
1093         tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
1094                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1095                                     SCSIID_TARGET(ahd, scb->hscb->scsiid),
1096                                     &tstate);
1097
1098         mask = SCB_GET_TARGET_MASK(ahd, scb);
1099
1100         if ((tstate->discenable & mask) != 0
1101          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1102                 scb->hscb->control |= DISCENB;
1103
1104         if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1105                 scb->flags |= SCB_PACKETIZED;
1106                 if (scb->hscb->task_management != 0)
1107                         scb->hscb->control &= ~MK_MESSAGE;
1108         }
1109
1110         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1111          && (tinfo->goal.width != 0
1112           || tinfo->goal.period != 0
1113           || tinfo->goal.ppr_options != 0)) {
1114                 scb->flags |= SCB_NEGOTIATE;
1115                 scb->hscb->control |= MK_MESSAGE;
1116         } else if ((tstate->auto_negotiate & mask) != 0) {
1117                 scb->flags |= SCB_AUTO_NEGOTIATE;
1118                 scb->hscb->control |= MK_MESSAGE;
1119         }
1120
1121         LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1122
1123         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1124
1125         if (ccb->ccb_h.timeout != CAM_TIME_INFINITY) {
1126                 uint64_t time;
1127
1128                 if (ccb->ccb_h.timeout == CAM_TIME_DEFAULT)
1129                         ccb->ccb_h.timeout = 5 * 1000;
1130
1131                 time = ccb->ccb_h.timeout;
1132                 time *= hz;
1133                 time /= 1000;
1134                 callout_reset(&ccb->ccb_h.timeout_ch, time, ahd_timeout, scb);
1135         }
1136
1137         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1138                 /* Define a mapping from our tag to the SCB. */
1139                 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
1140                 ahd_pause(ahd);
1141                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1142                 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
1143                 ahd_unpause(ahd);
1144         } else {
1145                 ahd_queue_scb(ahd, scb);
1146         }
1147
1148         ahd_unlock();
1149 }
1150
1151 static void
1152 ahd_poll(struct cam_sim *sim)
1153 {
1154         ahd_intr(cam_sim_softc(sim));
1155 }
1156
1157 static void
1158 ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
1159                struct ccb_scsiio *csio, struct scb *scb)
1160 {
1161         struct hardware_scb *hscb;
1162         struct ccb_hdr *ccb_h;
1163
1164         hscb = scb->hscb;
1165         ccb_h = &csio->ccb_h;
1166
1167         csio->resid = 0;
1168         csio->sense_resid = 0;
1169         if (ccb_h->func_code == XPT_SCSI_IO) {
1170                 hscb->cdb_len = csio->cdb_len;
1171                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1172
1173                         if (hscb->cdb_len > MAX_CDB_LEN
1174                          && (ccb_h->flags & CAM_CDB_PHYS) == 0) {
1175                                 /*
1176                                  * Should CAM start to support CDB sizes
1177                                  * greater than 16 bytes, we could use
1178                                  * the sense buffer to store the CDB.
1179                                  */
1180                                 ahd_set_transaction_status(scb,
1181                                                            CAM_REQ_INVALID);
1182                                 ahd_lock();
1183                                 ahd_free_scb(ahd, scb);
1184                                 ahd_unlock();
1185                                 xpt_done((union ccb *)csio);
1186                                 return;
1187                         }
1188                         if ((ccb_h->flags & CAM_CDB_PHYS) != 0) {
1189                                 hscb->shared_data.idata.cdb_from_host.cdbptr =
1190                                    ahd_htole64((uintptr_t)csio->cdb_io.cdb_ptr);
1191                                 hscb->shared_data.idata.cdb_from_host.cdblen =
1192                                    csio->cdb_len;
1193                                 hscb->cdb_len |= SCB_CDB_LEN_PTR;
1194                         } else {
1195                                 memcpy(hscb->shared_data.idata.cdb,
1196                                        csio->cdb_io.cdb_ptr,
1197                                        hscb->cdb_len);
1198                         }
1199                 } else {
1200                         if (hscb->cdb_len > MAX_CDB_LEN) {
1201                                 ahd_set_transaction_status(scb,
1202                                                            CAM_REQ_INVALID);
1203                                 ahd_lock();
1204                                 ahd_free_scb(ahd, scb);
1205                                 ahd_unlock();
1206                                 xpt_done((union ccb *)csio);
1207                                 return;
1208                         }
1209                         memcpy(hscb->shared_data.idata.cdb,
1210                                csio->cdb_io.cdb_bytes, hscb->cdb_len);
1211                 }
1212         }
1213
1214         /* Only use S/G if there is a transfer */
1215         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1216                 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
1217                         /* We've been given a pointer to a single buffer */
1218                         if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
1219                                 int error;
1220
1221                                 crit_enter();
1222                                 error = bus_dmamap_load(ahd->buffer_dmat,
1223                                                         scb->dmamap,
1224                                                         csio->data_ptr,
1225                                                         csio->dxfer_len,
1226                                                         ahd_execute_scb,
1227                                                         scb, /*flags*/0);
1228                                 if (error == EINPROGRESS) {
1229                                         /*
1230                                          * So as to maintain ordering,
1231                                          * freeze the controller queue
1232                                          * until our mapping is
1233                                          * returned.
1234                                          */
1235                                         xpt_freeze_simq(sim,
1236                                                         /*count*/1);
1237                                         scb->io_ctx->ccb_h.status |=
1238                                             CAM_RELEASE_SIMQ;
1239                                 }
1240                                 crit_exit();
1241                         } else {
1242                                 struct bus_dma_segment seg;
1243
1244                                 /* Pointer to physical buffer */
1245                                 if (csio->dxfer_len > AHD_MAXTRANSFER_SIZE)
1246                                         panic("ahd_setup_data - Transfer size "
1247                                               "larger than can device max");
1248
1249                                 seg.ds_addr =
1250                                     (bus_addr_t)(vm_offset_t)csio->data_ptr;
1251                                 seg.ds_len = csio->dxfer_len;
1252                                 ahd_execute_scb(scb, &seg, 1, 0);
1253                         }
1254                 } else {
1255                         struct bus_dma_segment *segs;
1256
1257                         if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
1258                                 panic("ahd_setup_data - Physical segment "
1259                                       "pointers unsupported");
1260
1261                         if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
1262                                 panic("ahd_setup_data - Virtual segment "
1263                                       "addresses unsupported");
1264
1265                         /* Just use the segments provided */
1266                         segs = (struct bus_dma_segment *)csio->data_ptr;
1267                         ahd_execute_scb(scb, segs, csio->sglist_cnt, 0);
1268                 }
1269         } else {
1270                 ahd_execute_scb(scb, NULL, 0, 0);
1271         }
1272 }
1273
1274 #if NOT_YET
1275 static void
1276 ahd_set_recoveryscb(struct ahd_softc *ahd, struct scb *scb) {
1277
1278         if ((scb->flags & SCB_RECOVERY_SCB) == 0) {
1279                 struct scb *list_scb;
1280
1281                 scb->flags |= SCB_RECOVERY_SCB;
1282
1283                 /*
1284                  * Take all queued, but not sent SCBs out of the equation.
1285                  * Also ensure that no new CCBs are queued to us while we
1286                  * try to fix this problem.
1287                  */
1288                 if ((scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
1289                         xpt_freeze_simq(SCB_GET_SIM(ahd, scb), /*count*/1);
1290                         scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
1291                 }
1292
1293                 /*
1294                  * Go through all of our pending SCBs and remove
1295                  * any scheduled timeouts for them.  We will reschedule
1296                  * them after we've successfully fixed this problem.
1297                  */
1298                 LIST_FOREACH(list_scb, &ahd->pending_scbs, pending_links) {
1299                         union ccb *ccb;
1300
1301                         ccb = list_scb->io_ctx;
1302                         callout_stop(&ccb->ccb_h.timeout_ch);
1303                 }
1304         }
1305 }
1306 #endif
1307
1308 void
1309 ahd_timeout(void *arg)
1310 {
1311         struct  scb       *scb;
1312         struct  ahd_softc *ahd;
1313         ahd_mode_state     saved_modes;
1314         int                target;
1315         int                lun;
1316         char               channel;
1317
1318 #if NOT_YET
1319         int                i;
1320         int                found;
1321         u_int              last_phase;
1322 #endif
1323
1324         scb = (struct scb *)arg;
1325         ahd = (struct ahd_softc *)scb->ahd_softc;
1326
1327         ahd_lock();
1328
1329         ahd_pause_and_flushwork(ahd);
1330
1331         saved_modes = ahd_save_modes(ahd);
1332 #if 0
1333         ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
1334         ahd_outb(ahd, SCSISIGO, ACKO);
1335         kprintf("set ACK\n");
1336         ahd_outb(ahd, SCSISIGO, 0);
1337         kprintf("clearing Ack\n");
1338         ahd_restore_modes(ahd, saved_modes);
1339 #endif
1340         if ((scb->flags & SCB_ACTIVE) == 0) {
1341                 /* Previous timeout took care of me already */
1342                 kprintf("%s: Timedout SCB already complete. "
1343                        "Interrupts may not be functioning.\n", ahd_name(ahd));
1344                 ahd_unpause(ahd);
1345                 ahd_unlock();
1346                 return;
1347         }
1348
1349         target = SCB_GET_TARGET(ahd, scb);
1350         channel = SCB_GET_CHANNEL(ahd, scb);
1351         lun = SCB_GET_LUN(scb);
1352
1353         ahd_print_path(ahd, scb);
1354         kprintf("SCB 0x%x - timed out\n", SCB_GET_TAG(scb));
1355         ahd_dump_card_state(ahd);
1356         ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
1357                           /*initiate reset*/TRUE);
1358         ahd_unlock();
1359         return;
1360 #if NOT_YET
1361         last_phase = ahd_inb(ahd, LASTPHASE);
1362         if (scb->sg_count > 0) {
1363                 for (i = 0; i < scb->sg_count; i++) {
1364                         kprintf("sg[%d] - Addr 0x%x : Length %d\n",
1365                                i,
1366                                ((struct ahd_dma_seg *)scb->sg_list)[i].addr,
1367                                ((struct ahd_dma_seg *)scb->sg_list)[i].len
1368                                 & AHD_SG_LEN_MASK);
1369                 }
1370         }
1371         if (scb->flags & (SCB_DEVICE_RESET|SCB_ABORT)) {
1372                 /*
1373                  * Been down this road before.
1374                  * Do a full bus reset.
1375                  */
1376 bus_reset:
1377                 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
1378                 found = ahd_reset_channel(ahd, channel, /*Initiate Reset*/TRUE);
1379                 kprintf("%s: Issued Channel %c Bus Reset. "
1380                        "%d SCBs aborted\n", ahd_name(ahd), channel, found);
1381         } else {
1382                 /*
1383                  * If we are a target, transition to bus free and report
1384                  * the timeout.
1385                  *
1386                  * The target/initiator that is holding up the bus may not
1387                  * be the same as the one that triggered this timeout
1388                  * (different commands have different timeout lengths).
1389                  * If the bus is idle and we are actiing as the initiator
1390                  * for this request, queue a BDR message to the timed out
1391                  * target.  Otherwise, if the timed out transaction is
1392                  * active:
1393                  *   Initiator transaction:
1394                  *      Stuff the message buffer with a BDR message and assert
1395                  *      ATN in the hopes that the target will let go of the bus
1396                  *      and go to the mesgout phase.  If this fails, we'll
1397                  *      get another timeout 2 seconds later which will attempt
1398                  *      a bus reset.
1399                  *
1400                  *   Target transaction:
1401                  *      Transition to BUS FREE and report the error.
1402                  *      It's good to be the target!
1403                  */
1404                 u_int active_scb_index;
1405                 u_int saved_scbptr;
1406
1407                 saved_scbptr = ahd_get_scbptr(ahd);
1408                 active_scb_index = saved_scbptr;
1409
1410                 if (last_phase != P_BUSFREE
1411                   && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0
1412                   && (active_scb_index < ahd->scb_data.numscbs)) {
1413                         struct scb *active_scb;
1414
1415                         /*
1416                          * If the active SCB is not us, assume that
1417                          * the active SCB has a longer timeout than
1418                          * the timedout SCB, and wait for the active
1419                          * SCB to timeout.
1420                          */
1421                         active_scb = ahd_lookup_scb(ahd, active_scb_index);
1422                         if (active_scb != scb) {
1423                                 struct   ccb_hdr *ccbh;
1424                                 uint64_t newtimeout;
1425
1426                                 ahd_print_path(ahd, scb);
1427                                 kprintf("Other SCB Timeout%s",
1428                                        (scb->flags & SCB_OTHERTCL_TIMEOUT) != 0
1429                                        ? " again\n" : "\n");
1430                                 scb->flags |= SCB_OTHERTCL_TIMEOUT;
1431                                 newtimeout =
1432                                     MAX(active_scb->io_ctx->ccb_h.timeout,
1433                                         scb->io_ctx->ccb_h.timeout);
1434                                 newtimeout *= hz;
1435                                 newtimeout /= 1000;
1436                                 ccbh = &scb->io_ctx->ccb_h;
1437                                 callout_reset(&scb->io_ctx->ccb_h.timeout_ch,
1438                                     newtimeout, ahd_timeout, scb);
1439                                 ahd_unpause(ahd);
1440                                 ahd_unlock();
1441                                 return;
1442                         }
1443
1444                         /* It's us */
1445                         if ((scb->hscb->control & TARGET_SCB) != 0) {
1446
1447                                 /*
1448                                  * Send back any queued up transactions
1449                                  * and properly record the error condition.
1450                                  */
1451                                 ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
1452                                                SCB_GET_CHANNEL(ahd, scb),
1453                                                SCB_GET_LUN(scb),
1454                                                SCB_GET_TAG(scb),
1455                                                ROLE_TARGET,
1456                                                CAM_CMD_TIMEOUT);
1457
1458                                 /* Will clear us from the bus */
1459                                 ahd_restart(ahd);
1460                                 ahd_unlock();
1461                                 return;
1462                         }
1463
1464                         ahd_set_recoveryscb(ahd, active_scb);
1465                         ahd_outb(ahd, MSG_OUT, HOST_MSG);
1466                         ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
1467                         ahd_print_path(ahd, active_scb);
1468                         kprintf("BDR message in message buffer\n");
1469                         active_scb->flags |= SCB_DEVICE_RESET;
1470                         callout_reset(&active_scb->io_ctx->ccb_h.timeout_ch,
1471                             2 * hz, ahd_timeout, active_scb);
1472                         ahd_unpause(ahd);
1473                 } else {
1474                         int      disconnected;
1475
1476                         /* XXX Shouldn't panic.  Just punt instead? */
1477                         if ((scb->hscb->control & TARGET_SCB) != 0)
1478                                 panic("Timed-out target SCB but bus idle");
1479
1480                         if (last_phase != P_BUSFREE
1481                          && (ahd_inb(ahd, SSTAT0) & TARGET) != 0) {
1482                                 /* XXX What happened to the SCB? */
1483                                 /* Hung target selection.  Goto busfree */
1484                                 kprintf("%s: Hung target selection\n",
1485                                        ahd_name(ahd));
1486                                 ahd_restart(ahd);
1487                                 ahd_unlock();
1488                                 return;
1489                         }
1490
1491                         if (ahd_search_qinfifo(ahd, target, channel, lun,
1492                                                SCB_GET_TAG(scb), ROLE_INITIATOR,
1493                                                /*status*/0, SEARCH_COUNT) > 0) {
1494                                 disconnected = FALSE;
1495                         } else {
1496                                 disconnected = TRUE;
1497                         }
1498
1499                         if (disconnected) {
1500
1501                                 ahd_set_recoveryscb(ahd, scb);
1502                                 /*
1503                                  * Actually re-queue this SCB in an attempt
1504                                  * to select the device before it reconnects.
1505                                  * In either case (selection or reselection),
1506                                  * we will now issue a target reset to the
1507                                  * timed-out device.
1508                                  *
1509                                  * Set the MK_MESSAGE control bit indicating
1510                                  * that we desire to send a message.  We
1511                                  * also set the disconnected flag since
1512                                  * in the paging case there is no guarantee
1513                                  * that our SCB control byte matches the
1514                                  * version on the card.  We don't want the
1515                                  * sequencer to abort the command thinking
1516                                  * an unsolicited reselection occurred.
1517                                  */
1518                                 scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
1519                                 scb->flags |= SCB_DEVICE_RESET;
1520
1521                                 /*
1522                                  * The sequencer will never re-reference the
1523                                  * in-core SCB.  To make sure we are notified
1524                                  * during reslection, set the MK_MESSAGE flag
1525                                  * in the card's copy of the SCB.
1526                                  */
1527                                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1528                                 ahd_outb(ahd, SCB_CONTROL,
1529                                          ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
1530
1531                                 /*
1532                                  * Clear out any entries in the QINFIFO first
1533                                  * so we are the next SCB for this target
1534                                  * to run.
1535                                  */
1536                                 ahd_search_qinfifo(ahd,
1537                                                    SCB_GET_TARGET(ahd, scb),
1538                                                    channel, SCB_GET_LUN(scb),
1539                                                    SCB_LIST_NULL,
1540                                                    ROLE_INITIATOR,
1541                                                    CAM_REQUEUE_REQ,
1542                                                    SEARCH_COMPLETE);
1543                                 ahd_print_path(ahd, scb);
1544                                 kprintf("Queuing a BDR SCB\n");
1545                                 ahd_qinfifo_requeue_tail(ahd, scb);
1546                                 ahd_set_scbptr(ahd, saved_scbptr);
1547                                 callout_reset(&scb->io_ctx->ccb_h.timeout_ch,
1548                                     2 * hz, ahd_timeout, scb);
1549                                 ahd_unpause(ahd);
1550                         } else {
1551                                 /* Go "immediatly" to the bus reset */
1552                                 /* This shouldn't happen */
1553                                 ahd_set_recoveryscb(ahd, scb);
1554                                 ahd_print_path(ahd, scb);
1555                                 kprintf("SCB %d: Immediate reset.  "
1556                                         "Flags = 0x%x\n", SCB_GET_TAG(scb),
1557                                         scb->flags);
1558                                 goto bus_reset;
1559                         }
1560                 }
1561         }
1562         ahd_unlock();
1563 #endif
1564 }
1565
1566 static void
1567 ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
1568 {
1569         union ccb *abort_ccb;
1570
1571         abort_ccb = ccb->cab.abort_ccb;
1572         switch (abort_ccb->ccb_h.func_code) {
1573 #ifdef AHD_TARGET_MODE
1574         case XPT_ACCEPT_TARGET_IO:
1575         case XPT_IMMED_NOTIFY:
1576         case XPT_CONT_TARGET_IO:
1577         {
1578                 struct ahd_tmode_tstate *tstate;
1579                 struct ahd_tmode_lstate *lstate;
1580                 struct ccb_hdr_slist *list;
1581                 cam_status status;
1582
1583                 status = ahd_find_tmode_devs(ahd, sim, abort_ccb, &tstate,
1584                                              &lstate, TRUE);
1585
1586                 if (status != CAM_REQ_CMP) {
1587                         ccb->ccb_h.status = status;
1588                         break;
1589                 }
1590
1591                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1592                         list = &lstate->accept_tios;
1593                 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
1594                         list = &lstate->immed_notifies;
1595                 else
1596                         list = NULL;
1597
1598                 if (list != NULL) {
1599                         struct ccb_hdr *curelm;
1600                         int found;
1601
1602                         curelm = SLIST_FIRST(list);
1603                         found = 0;
1604                         if (curelm == &abort_ccb->ccb_h) {
1605                                 found = 1;
1606                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1607                         } else {
1608                                 while(curelm != NULL) {
1609                                         struct ccb_hdr *nextelm;
1610
1611                                         nextelm =
1612                                             SLIST_NEXT(curelm, sim_links.sle);
1613
1614                                         if (nextelm == &abort_ccb->ccb_h) {
1615                                                 found = 1;
1616                                                 SLIST_NEXT(curelm,
1617                                                            sim_links.sle) =
1618                                                     SLIST_NEXT(nextelm,
1619                                                                sim_links.sle);
1620                                                 break;
1621                                         }
1622                                         curelm = nextelm;
1623                                 }
1624                         }
1625
1626                         if (found) {
1627                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1628                                 xpt_done(abort_ccb);
1629                                 ccb->ccb_h.status = CAM_REQ_CMP;
1630                         } else {
1631                                 xpt_print_path(abort_ccb->ccb_h.path);
1632                                 kprintf("Not found\n");
1633                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1634                         }
1635                         break;
1636                 }
1637                 /* FALLTHROUGH */
1638         }
1639 #endif
1640         case XPT_SCSI_IO:
1641                 /* XXX Fully implement the hard ones */
1642                 ccb->ccb_h.status = CAM_UA_ABORT;
1643                 break;
1644         default:
1645                 ccb->ccb_h.status = CAM_REQ_INVALID;
1646                 break;
1647         }
1648         xpt_done(ccb);
1649 }
1650
1651 void
1652 ahd_send_async(struct ahd_softc *ahd, char channel, u_int target,
1653                 u_int lun, ac_code code, void *opt_arg)
1654 {
1655         struct  ccb_trans_settings cts;
1656         struct cam_path *path;
1657         void *arg;
1658         int error;
1659
1660         arg = NULL;
1661         error = ahd_create_path(ahd, channel, target, lun, &path);
1662
1663         if (error != CAM_REQ_CMP)
1664                 return;
1665
1666         switch (code) {
1667         case AC_TRANSFER_NEG:
1668         {
1669 #ifdef AHD_NEW_TRAN_SETTINGS
1670                 struct  ccb_trans_settings_scsi *scsi;
1671
1672                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1673                 scsi = &cts.proto_specific.scsi;
1674 #else
1675                 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1676 #endif
1677                 cts.ccb_h.path = path;
1678                 cts.ccb_h.target_id = target;
1679                 cts.ccb_h.target_lun = lun;
1680                 ahd_get_tran_settings(ahd, ahd->our_id, channel, &cts);
1681                 arg = &cts;
1682 #ifdef AHD_NEW_TRAN_SETTINGS
1683                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1684                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1685 #else
1686                 cts.valid &= ~CCB_TRANS_TQ_VALID;
1687                 cts.flags &= ~CCB_TRANS_TAG_ENB;
1688 #endif
1689                 if (opt_arg == NULL)
1690                         break;
1691                 if (*((ahd_queue_alg *)opt_arg) == AHD_QUEUE_TAGGED)
1692 #ifdef AHD_NEW_TRAN_SETTINGS
1693                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1694                 scsi->valid |= CTS_SCSI_VALID_TQ;
1695 #else
1696                         cts.flags |= CCB_TRANS_TAG_ENB;
1697                 cts.valid |= CCB_TRANS_TQ_VALID;
1698 #endif
1699                 break;
1700         }
1701         case AC_SENT_BDR:
1702         case AC_BUS_RESET:
1703                 break;
1704         default:
1705                 panic("ahd_send_async: Unexpected async event");
1706         }
1707         xpt_async(code, path, arg);
1708         xpt_free_path(path);
1709 }
1710
1711 void
1712 ahd_platform_set_tags(struct ahd_softc *ahd,
1713                       struct ahd_devinfo *devinfo, int enable)
1714 {
1715 }
1716
1717 int
1718 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1719 {
1720         ahd->platform_data = kmalloc(sizeof(struct ahd_platform_data), M_DEVBUF,
1721                                     M_INTWAIT | M_ZERO);
1722         return (0);
1723 }
1724
1725 void
1726 ahd_platform_free(struct ahd_softc *ahd)
1727 {
1728         struct ahd_platform_data *pdata;
1729
1730         pdata = ahd->platform_data;
1731         if (pdata != NULL) {
1732                 if (pdata->regs[0] != NULL)
1733                         bus_release_resource(ahd->dev_softc,
1734                                              pdata->regs_res_type[0],
1735                                              pdata->regs_res_id[0],
1736                                              pdata->regs[0]);
1737
1738                 if (pdata->regs[1] != NULL)
1739                         bus_release_resource(ahd->dev_softc,
1740                                              pdata->regs_res_type[1],
1741                                              pdata->regs_res_id[1],
1742                                              pdata->regs[1]);
1743
1744                 if (pdata->irq != NULL)
1745                         bus_release_resource(ahd->dev_softc,
1746                                              pdata->irq_res_type,
1747                                              0, pdata->irq);
1748
1749                 if (pdata->sim_b != NULL) {
1750                         xpt_async(AC_LOST_DEVICE, pdata->path_b, NULL);
1751                         xpt_free_path(pdata->path_b);
1752                         xpt_bus_deregister(cam_sim_path(pdata->sim_b));
1753                         cam_sim_free(pdata->sim_b);
1754                 }
1755                 if (pdata->sim != NULL) {
1756                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1757                         xpt_free_path(pdata->path);
1758                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1759                         cam_sim_free(pdata->sim);
1760                 }
1761                 if (pdata->eh != NULL)
1762                         EVENTHANDLER_DEREGISTER(shutdown_final, pdata->eh);
1763                 kfree(ahd->platform_data, M_DEVBUF);
1764         }
1765 }
1766
1767 int
1768 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
1769 {
1770         /* We don't sort softcs under FreeBSD so report equal always */
1771         return (0);
1772 }
1773
1774 int
1775 ahd_detach(device_t dev)
1776 {
1777         struct ahd_softc *ahd;
1778
1779         device_printf(dev, "detaching device\n");
1780         ahd = device_get_softc(dev);
1781         ahd = ahd_find_softc(ahd);
1782         if (ahd == NULL) {
1783                 device_printf(dev, "aic7xxx already detached\n");
1784                 return (ENOENT);
1785         }
1786         ahd_lock();
1787         ahd_intr_enable(ahd, FALSE);
1788         bus_teardown_intr(dev, ahd->platform_data->irq, ahd->platform_data->ih);
1789         ahd_unlock();
1790         ahd_free(ahd);
1791         return (0);
1792 }
1793
1794 #if UNUSED
1795 static void
1796 ahd_dump_targcmd(struct target_cmd *cmd)
1797 {
1798         uint8_t *byte;
1799         uint8_t *last_byte;
1800         int i;
1801
1802         byte = &cmd->initiator_channel;
1803         /* Debugging info for received commands */
1804         last_byte = &cmd[1].initiator_channel;
1805
1806         i = 0;
1807         while (byte < last_byte) {
1808                 if (i == 0)
1809                         kprintf("\t");
1810                 kprintf("%#x", *byte++);
1811                 i++;
1812                 if (i == 8) {
1813                         kprintf("\n");
1814                         i = 0;
1815                 } else {
1816                         kprintf(", ");
1817                 }
1818         }
1819 }
1820 #endif
1821
1822 static int
1823 ahd_modevent(module_t mod, int type, void *data)
1824 {
1825         /* XXX Deal with busy status on unload. */
1826         return 0;
1827 }
1828
1829 static moduledata_t ahd_mod = {
1830         "ahd",
1831         ahd_modevent,
1832         NULL
1833 };
1834
1835 /********************************** DDB Hooks *********************************/
1836 #ifdef DDB
1837 static struct ahd_softc *ahd_ddb_softc;
1838 static int ahd_ddb_paused;
1839 static int ahd_ddb_paused_on_entry;
1840 DB_COMMAND(ahd_set_unit, ahd_ddb_set_unit)
1841 {
1842         struct ahd_softc *list_ahd;
1843
1844         ahd_ddb_softc = NULL;
1845         TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
1846                 if (list_ahd->unit == addr)
1847                         ahd_ddb_softc = list_ahd;
1848         }
1849         if (ahd_ddb_softc == NULL)
1850                 db_error("No matching softc found!\n");
1851 }
1852
1853 DB_COMMAND(ahd_pause, ahd_ddb_pause)
1854 {
1855         if (ahd_ddb_softc == NULL) {
1856                 db_error("Must set unit with ahd_set_unit first!\n");
1857                 return;
1858         }
1859         if (ahd_ddb_paused == 0) {
1860                 ahd_ddb_paused++;
1861                 if (ahd_is_paused(ahd_ddb_softc)) {
1862                         ahd_ddb_paused_on_entry++;
1863                         return;
1864                 }
1865                 ahd_pause(ahd_ddb_softc);
1866         }
1867 }
1868
1869 DB_COMMAND(ahd_unpause, ahd_ddb_unpause)
1870 {
1871         if (ahd_ddb_softc == NULL) {
1872                 db_error("Must set unit with ahd_set_unit first!\n");
1873                 return;
1874         }
1875         if (ahd_ddb_paused != 0) {
1876                 ahd_ddb_paused = 0;
1877                 if (ahd_ddb_paused_on_entry)
1878                         return;
1879                 ahd_unpause(ahd_ddb_softc);
1880         } else if (ahd_ddb_paused_on_entry != 0) {
1881                 /* Two unpauses to clear a paused on entry. */
1882                 ahd_ddb_paused_on_entry = 0;
1883                 ahd_unpause(ahd_ddb_softc);
1884         }
1885 }
1886
1887 DB_COMMAND(ahd_in, ahd_ddb_in)
1888 {
1889         int c;
1890         int size;
1891
1892         if (ahd_ddb_softc == NULL) {
1893                 db_error("Must set unit with ahd_set_unit first!\n");
1894                 return;
1895         }
1896         if (have_addr == 0)
1897                 return;
1898
1899         size = 1;
1900         while ((c = *modif++) != '\0') {
1901                 switch (c) {
1902                 case 'b':
1903                         size = 1;
1904                         break;
1905                 case 'w':
1906                         size = 2;
1907                         break;
1908                 case 'l':
1909                         size = 4;
1910                 break;
1911                 }
1912         }
1913
1914         if (count <= 0)
1915                 count = 1;
1916         while (--count >= 0) {
1917                 db_printf("%04lx (M)%x: \t", (u_long)addr,
1918                           ahd_inb(ahd_ddb_softc, MODE_PTR));
1919                 switch (size) {
1920                 case 1:
1921                         db_printf("%02x\n", ahd_inb(ahd_ddb_softc, addr));
1922                         break;
1923                 case 2:
1924                         db_printf("%04x\n", ahd_inw(ahd_ddb_softc, addr));
1925                         break;
1926                 case 4:
1927                         db_printf("%08x\n", ahd_inl(ahd_ddb_softc, addr));
1928                         break;
1929                 }
1930         }
1931 }
1932
1933 DB_SET(ahd_out, ahd_ddb_out, db_cmd_set, CS_MORE, NULL)
1934 {
1935         db_expr_t old_value;
1936         db_expr_t new_value;
1937         int       size;
1938
1939         if (ahd_ddb_softc == NULL) {
1940                 db_error("Must set unit with ahd_set_unit first!\n");
1941                 return;
1942         }
1943
1944         switch (modif[0]) {
1945         case '\0':
1946         case 'b':
1947                 size = 1;
1948                 break;
1949         case 'h':
1950                 size = 2;
1951                 break;
1952         case 'l':
1953                 size = 4;
1954                 break;
1955         default:
1956                 db_error("Unknown size\n");
1957                 return;
1958         }
1959
1960         while (db_expression(&new_value)) {
1961                 switch (size) {
1962                 default:
1963                 case 1:
1964                         old_value = ahd_inb(ahd_ddb_softc, addr);
1965                         ahd_outb(ahd_ddb_softc, addr, new_value);
1966                         break;
1967                 case 2:
1968                         old_value = ahd_inw(ahd_ddb_softc, addr);
1969                         ahd_outw(ahd_ddb_softc, addr, new_value);
1970                         break;
1971                 case 4:
1972                         old_value = ahd_inl(ahd_ddb_softc, addr);
1973                         ahd_outl(ahd_ddb_softc, addr, new_value);
1974                         break;
1975                 }
1976                 db_printf("%04lx (M)%x: \t0x%lx\t=\t0x%lx",
1977                           (u_long)addr, ahd_inb(ahd_ddb_softc, MODE_PTR),
1978                           (u_long)old_value, (u_long)new_value);
1979                 addr += size;
1980         }
1981         db_skip_to_eol();
1982 }
1983
1984 #endif
1985
1986
1987 DECLARE_MODULE(ahd, ahd_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1988 MODULE_DEPEND(ahd, cam, 1, 1, 1);
1989 MODULE_VERSION(ahd, 1);