sys/dev/disk/aic7xxx/aic7xxx_osm.c

   1 /*
   2  * Bus independent FreeBSD shim for the aic7xxx based Adaptec SCSI controllers
   3  *
   4  * Copyright (c) 1994-2001 Justin T. Gibbs.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification.
  13  * 2. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * Alternatively, this software may be distributed under the terms of the
  17  * GNU Public License ("GPL").
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.c#20 $
  32  *
  33  * $FreeBSD: src/sys/dev/aic7xxx/aic7xxx_osm.c,v 1.44 2005/12/04 02:12:40 ru Exp $
  34  * $DragonFly: src/sys/dev/disk/aic7xxx/aic7xxx_osm.c,v 1.18 2007/07/07 01:06:07 pavalos Exp $
  35  */
  36
  37 #include "aic7xxx_osm.h"
  38 #include "aic7xxx_inline.h"
  39
  40 #include <sys/kthread.h>
  41
  42 #ifndef AHC_TMODE_ENABLE
  43 #define AHC_TMODE_ENABLE 0
  44 #endif
  45
  46 #include "aic_osm_lib.c"
  47
  48 #define ccb_scb_ptr spriv_ptr0
  49
  50 devclass_t ahc_devclass;
  51
  52 #if 0
  53 static void     ahc_dump_targcmd(struct target_cmd *cmd);
  54 #endif
  55 static int      ahc_modevent(module_t mod, int type, void *data);
  56 static void     ahc_action(struct cam_sim *sim, union ccb *ccb);
  57 static void     ahc_get_tran_settings(struct ahc_softc *ahc,
  58                                       int our_id, char channel,
  59                                       struct ccb_trans_settings *cts);
  60 static void     ahc_async(void *callback_arg, uint32_t code,
  61                           struct cam_path *path, void *arg);
  62 static void     ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs,
  63                                 int nsegments, int error);
  64 static void     ahc_poll(struct cam_sim *sim);
  65 static void     ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
  66                                struct ccb_scsiio *csio, struct scb *scb);
  67 static void     ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim,
  68                               union ccb *ccb);
  69 static int      ahc_create_path(struct ahc_softc *ahc,
  70                                 char channel, u_int target, u_int lun,
  71                                 struct cam_path **path);
  72
  73
  74 static int
  75 ahc_create_path(struct ahc_softc *ahc, char channel, u_int target,
  76                 u_int lun, struct cam_path **path)
  77 {
  78         path_id_t path_id;
  79
  80         if (channel == 'B')
  81                 path_id = cam_sim_path(ahc->platform_data->sim_b);
  82         else
  83                 path_id = cam_sim_path(ahc->platform_data->sim);
  84
  85         return (xpt_create_path(path, /*periph*/NULL,
  86                                 path_id, target, lun));
  87 }
  88
  89 int
  90 ahc_map_int(struct ahc_softc *ahc)
  91 {
  92         int error;
  93         int zero;
  94         int shareable;
  95
  96         zero = 0;
  97         shareable = (ahc->flags & AHC_EDGE_INTERRUPT) ? 0: RF_SHAREABLE;
  98         ahc->platform_data->irq =
  99             bus_alloc_resource_any(ahc->dev_softc, SYS_RES_IRQ, &zero,
 100                                    RF_ACTIVE | shareable);
 101         if (ahc->platform_data->irq == NULL) {
 102                 device_printf(ahc->dev_softc,
 103                               "bus_alloc_resource() failed to allocate IRQ\n");
 104                 return (ENOMEM);
 105         }
 106         ahc->platform_data->irq_res_type = SYS_RES_IRQ;
 107
 108         /* Hook up our interrupt handler */
 109         error = bus_setup_intr(ahc->dev_softc, ahc->platform_data->irq,
 110                                0, ahc_platform_intr, ahc,
 111                                &ahc->platform_data->ih, NULL);
 112
 113         if (error != 0)
 114                 device_printf(ahc->dev_softc, "bus_setup_intr() failed: %d\n",
 115                               error);
 116         return (error);
 117 }
 118
 119 int
 120 aic7770_map_registers(struct ahc_softc *ahc, u_int unused_ioport_arg)
 121 {
 122         struct  resource *regs;
 123         int     rid;
 124
 125         rid = 0;
 126         regs = bus_alloc_resource_any(ahc->dev_softc, SYS_RES_IOPORT, &rid,
 127                                       RF_ACTIVE);
 128         if (regs == NULL) {
 129                 device_printf(ahc->dev_softc, "Unable to map I/O space?!\n");
 130                 return ENOMEM;
 131         }
 132         ahc->platform_data->regs_res_type = SYS_RES_IOPORT;
 133         ahc->platform_data->regs_res_id = rid,
 134         ahc->platform_data->regs = regs;
 135         ahc->tag = rman_get_bustag(regs);
 136         ahc->bsh = rman_get_bushandle(regs);
 137         return (0);
 138 }
 139
 140 /*
 141  * Attach all the sub-devices we can find
 142  */
 143 int
 144 ahc_attach(struct ahc_softc *ahc)
 145 {
 146         char   ahc_info[256];
 147         struct ccb_setasync csa;
 148         int bus_id;
 149         int bus_id2;
 150         struct cam_sim *sim;
 151         struct cam_sim *sim2;
 152         struct cam_path *path;
 153         struct cam_path *path2;
 154         int count;
 155
 156         count = 0;
 157         sim = NULL;
 158         sim2 = NULL;
 159
 160         /*
 161          * Create a thread to perform all recovery.
 162          */
 163         if (ahc_spawn_recovery_thread(ahc) != 0)
 164                 goto fail;
 165
 166         ahc_controller_info(ahc, ahc_info);
 167         kprintf("%s\n", ahc_info);
 168         ahc_lock();
 169
 170         /*
 171          * Attach secondary channel first if the user has
 172          * declared it the primary channel.
 173          */
 174         if ((ahc->features & AHC_TWIN) != 0
 175          && (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
 176                 bus_id = 1;
 177                 bus_id2 = 0;
 178         } else {
 179                 bus_id = 0;
 180                 bus_id2 = 1;
 181         }
 182
 183         /*
 184          * Construct our first channel SIM entry
 185          */
 186         sim = cam_sim_alloc(ahc_action, ahc_poll, "ahc", ahc,
 187                             device_get_unit(ahc->dev_softc),
 188                             1, AHC_MAX_QUEUE, NULL);
 189         if (sim == NULL)
 190                 goto fail;
 191
 192         if (xpt_bus_register(sim, bus_id) != CAM_SUCCESS) {
 193                 cam_sim_free(sim);
 194                 sim = NULL;
 195                 goto fail;
 196         }
 197
 198         if (xpt_create_path(&path, /*periph*/NULL,
 199                             cam_sim_path(sim), CAM_TARGET_WILDCARD,
 200                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 201                 xpt_bus_deregister(cam_sim_path(sim));
 202                 cam_sim_free(sim);
 203                 sim = NULL;
 204                 goto fail;
 205         }
 206
 207         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 208         csa.ccb_h.func_code = XPT_SASYNC_CB;
 209         csa.event_enable = AC_LOST_DEVICE;
 210         csa.callback = ahc_async;
 211         csa.callback_arg = sim;
 212         xpt_action((union ccb *)&csa);
 213         count++;
 214
 215         if (ahc->features & AHC_TWIN) {
 216                 sim2 = cam_sim_alloc(ahc_action, ahc_poll, "ahc",
 217                                     ahc, device_get_unit(ahc->dev_softc), 1,
 218                                     AHC_MAX_QUEUE, NULL);
 219
 220                 if (sim2 == NULL) {
 221                         kprintf("ahc_attach: Unable to attach second "
 222                                "bus due to resource shortage");
 223                         goto fail;
 224                 }
 225
 226                 if (xpt_bus_register(sim2, bus_id2) != CAM_SUCCESS) {
 227                         kprintf("ahc_attach: Unable to attach second "
 228                                "bus due to resource shortage");
 229                         /*
 230                          * We do not want to destroy the device queue
 231                          * because the first bus is using it.
 232                          */
 233                         cam_sim_free(sim2);
 234                         goto fail;
 235                 }
 236
 237                 if (xpt_create_path(&path2, /*periph*/NULL,
 238                                     cam_sim_path(sim2),
 239                                     CAM_TARGET_WILDCARD,
 240                                     CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
 241                         xpt_bus_deregister(cam_sim_path(sim2));
 242                         cam_sim_free(sim2);
 243                         sim2 = NULL;
 244                         goto fail;
 245                 }
 246                 xpt_setup_ccb(&csa.ccb_h, path2, /*priority*/5);
 247                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 248                 csa.event_enable = AC_LOST_DEVICE;
 249                 csa.callback = ahc_async;
 250                 csa.callback_arg = sim2;
 251                 xpt_action((union ccb *)&csa);
 252                 count++;
 253         }
 254
 255 fail:
 256         if ((ahc->features & AHC_TWIN) != 0
 257          && (ahc->flags & AHC_PRIMARY_CHANNEL) != 0) {
 258                 ahc->platform_data->sim_b = sim;
 259                 ahc->platform_data->path_b = path;
 260                 ahc->platform_data->sim = sim2;
 261                 ahc->platform_data->path = path2;
 262         } else {
 263                 ahc->platform_data->sim = sim;
 264                 ahc->platform_data->path = path;
 265                 ahc->platform_data->sim_b = sim2;
 266                 ahc->platform_data->path_b = path2;
 267         }
 268
 269         if (count != 0) {
 270                 /* We have to wait until after any system dumps... */
 271                 ahc->platform_data->eh =
 272                     EVENTHANDLER_REGISTER(shutdown_post_sync, ahc_shutdown,
 273                                           ahc, SHUTDOWN_PRI_DEFAULT);
 274                 ahc_intr_enable(ahc, TRUE);
 275         }
 276
 277         ahc_unlock();
 278         return (count);
 279 }
 280
 281 /*
 282  * Catch an interrupt from the adapter
 283  */
 284 void
 285 ahc_platform_intr(void *arg)
 286 {
 287         struct  ahc_softc *ahc;
 288
 289         ahc = (struct ahc_softc *)arg;
 290         ahc_intr(ahc);
 291 }
 292
 293 /*
 294  * We have an scb which has been processed by the
 295  * adaptor, now we look to see how the operation
 296  * went.
 297  */
 298 void
 299 ahc_done(struct ahc_softc *ahc, struct scb *scb)
 300 {
 301         union ccb *ccb;
 302
 303         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
 304                   ("ahc_done - scb %d\n", scb->hscb->tag));
 305
 306         ccb = scb->io_ctx;
 307         LIST_REMOVE(scb, pending_links);
 308         if ((scb->flags & SCB_TIMEDOUT) != 0)
 309                 LIST_REMOVE(scb, timedout_links);
 310         if ((scb->flags & SCB_UNTAGGEDQ) != 0) {
 311                 struct scb_tailq *untagged_q;
 312                 int target_offset;
 313
 314                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
 315                 untagged_q = &ahc->untagged_queues[target_offset];
 316                 TAILQ_REMOVE(untagged_q, scb, links.tqe);
 317                 scb->flags &= ~SCB_UNTAGGEDQ;
 318                 ahc_run_untagged_queue(ahc, untagged_q);
 319         }
 320
 321         callout_stop(&ccb->ccb_h.timeout_ch);
 322
 323         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
 324                 bus_dmasync_op_t op;
 325
 326                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
 327                         op = BUS_DMASYNC_POSTREAD;
 328                 else
 329                         op = BUS_DMASYNC_POSTWRITE;
 330                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
 331                 bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
 332         }
 333
 334         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 335                 struct cam_path *ccb_path;
 336
 337                 /*
 338                  * If we have finally disconnected, clean up our
 339                  * pending device state.
 340                  * XXX - There may be error states that cause where
 341                  *       we will remain connected.
 342                  */
 343                 ccb_path = ccb->ccb_h.path;
 344                 if (ahc->pending_device != NULL
 345                  && xpt_path_comp(ahc->pending_device->path, ccb_path) == 0) {
 346
 347                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 348                                 ahc->pending_device = NULL;
 349                         } else {
 350                                 if (bootverbose) {
 351                                         xpt_print_path(ccb->ccb_h.path);
 352                                         kprintf("Still connected\n");
 353                                 }
 354                                 aic_freeze_ccb(ccb);
 355                         }
 356                 }
 357
 358                 if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
 359                         ccb->ccb_h.status |= CAM_REQ_CMP;
 360                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 361                 ahc_free_scb(ahc, scb);
 362                 xpt_done(ccb);
 363                 return;
 364         }
 365
 366         /*
 367          * If the recovery SCB completes, we have to be
 368          * out of our timeout.
 369          */
 370         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
 371                 struct  scb *list_scb;
 372
 373                 ahc->scb_data->recovery_scbs--;
 374
 375                 if (aic_get_transaction_status(scb) == CAM_BDR_SENT
 376                  || aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
 377                         aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
 378
 379                 if (ahc->scb_data->recovery_scbs == 0) {
 380                         /*
 381                          * All recovery actions have completed successfully,
 382                          * so reinstate the timeouts for all other pending
 383                          * commands.
 384                          */
 385                          LIST_FOREACH(list_scb, &ahc->pending_scbs,
 386                                       pending_links) {
 387
 388                                 aic_scb_timer_reset(list_scb,
 389                                                     aic_get_timeout(scb));
 390                         }
 391
 392                         ahc_print_path(ahc, scb);
 393                         kprintf("no longer in timeout, status = %x\n",
 394                                ccb->ccb_h.status);
 395                 }
 396         }
 397
 398         /* Don't clobber any existing error state */
 399         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
 400                 ccb->ccb_h.status |= CAM_REQ_CMP;
 401         } else if ((scb->flags & SCB_SENSE) != 0) {
 402                 /*
 403                  * We performed autosense retrieval.
 404                  *
 405                  * Zero any sense not transferred by the
 406                  * device.  The SCSI spec mandates that any
 407                  * untransfered data should be assumed to be
 408                  * zero.  Complete the 'bounce' of sense information
 409                  * through buffers accessible via bus-space by
 410                  * copying it into the clients csio.
 411                  */
 412                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
 413                 memcpy(&ccb->csio.sense_data,
 414                        ahc_get_sense_buf(ahc, scb),
 415                        (aic_le32toh(scb->sg_list->len) & AHC_SG_LEN_MASK)
 416                        - ccb->csio.sense_resid);
 417                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
 418         }
 419         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
 420         ahc_free_scb(ahc, scb);
 421         xpt_done(ccb);
 422 }
 423
 424 static void
 425 ahc_action(struct cam_sim *sim, union ccb *ccb)
 426 {
 427         struct  ahc_softc *ahc;
 428         struct  ahc_tmode_lstate *lstate;
 429         u_int   target_id;
 430         u_int   our_id;
 431
 432         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahc_action\n"));
 433
 434         ahc = (struct ahc_softc *)cam_sim_softc(sim);
 435
 436         target_id = ccb->ccb_h.target_id;
 437         our_id = SIM_SCSI_ID(ahc, sim);
 438
 439         switch (ccb->ccb_h.func_code) {
 440         /* Common cases first */
 441         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
 442         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
 443         {
 444                 struct     ahc_tmode_tstate *tstate;
 445                 cam_status status;
 446
 447                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
 448                                              &lstate, TRUE);
 449
 450                 if (status != CAM_REQ_CMP) {
 451                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 452                                 /* Response from the black hole device */
 453                                 tstate = NULL;
 454                                 lstate = ahc->black_hole;
 455                         } else {
 456                                 ccb->ccb_h.status = status;
 457                                 xpt_done(ccb);
 458                                 break;
 459                         }
 460                 }
 461                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
 462
 463                         ahc_lock();
 464                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
 465                                           sim_links.sle);
 466                         ccb->ccb_h.status = CAM_REQ_INPROG;
 467                         if ((ahc->flags & AHC_TQINFIFO_BLOCKED) != 0)
 468                                 ahc_run_tqinfifo(ahc, /*paused*/FALSE);
 469                         ahc_unlock();
 470                         break;
 471                 }
 472
 473                 /*
 474                  * The target_id represents the target we attempt to
 475                  * select.  In target mode, this is the initiator of
 476                  * the original command.
 477                  */
 478                 our_id = target_id;
 479                 target_id = ccb->csio.init_id;
 480                 /* FALLTHROUGH */
 481         }
 482         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
 483         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
 484         {
 485                 struct  scb *scb;
 486                 struct  hardware_scb *hscb;
 487
 488                 if ((ahc->flags & AHC_INITIATORROLE) == 0
 489                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
 490                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
 491                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 492                         xpt_done(ccb);
 493                         return;
 494                 }
 495
 496                 /*
 497                  * get an scb to use.
 498                  */
 499                 ahc_lock();
 500                 if ((scb = ahc_get_scb(ahc)) == NULL) {
 501
 502                         xpt_freeze_simq(sim, /*count*/1);
 503                         ahc->flags |= AHC_RESOURCE_SHORTAGE;
 504                         ahc_unlock();
 505                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
 506                         xpt_done(ccb);
 507                         return;
 508                 }
 509                 ahc_unlock();
 510
 511                 hscb = scb->hscb;
 512
 513                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
 514                           ("start scb(%p)\n", scb));
 515                 scb->io_ctx = ccb;
 516                 /*
 517                  * So we can find the SCB when an abort is requested
 518                  */
 519                 ccb->ccb_h.ccb_scb_ptr = scb;
 520
 521                 /*
 522                  * Put all the arguments for the xfer in the scb
 523                  */
 524                 hscb->control = 0;
 525                 hscb->scsiid = BUILD_SCSIID(ahc, sim, target_id, our_id);
 526                 hscb->lun = ccb->ccb_h.target_lun;
 527                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
 528                         hscb->cdb_len = 0;
 529                         scb->flags |= SCB_DEVICE_RESET;
 530                         hscb->control |= MK_MESSAGE;
 531                         ahc_execute_scb(scb, NULL, 0, 0);
 532                 } else {
 533                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
 534                                 struct target_data *tdata;
 535
 536                                 tdata = &hscb->shared_data.tdata;
 537                                 if (ahc->pending_device == lstate)
 538                                         scb->flags |= SCB_TARGET_IMMEDIATE;
 539                                 hscb->control |= TARGET_SCB;
 540                                 scb->flags |= SCB_TARGET_SCB;
 541                                 tdata->target_phases = 0;
 542                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
 543                                         tdata->target_phases |= SPHASE_PENDING;
 544                                         tdata->scsi_status =
 545                                             ccb->csio.scsi_status;
 546                                 }
 547                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
 548                                         tdata->target_phases |= NO_DISCONNECT;
 549
 550                                 tdata->initiator_tag = ccb->csio.tag_id;
 551                         }
 552                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
 553                                 hscb->control |= ccb->csio.tag_action;
 554
 555                         ahc_setup_data(ahc, sim, &ccb->csio, scb);
 556                 }
 557                 break;
 558         }
 559         case XPT_NOTIFY_ACK:
 560         case XPT_IMMED_NOTIFY:
 561         {
 562                 struct     ahc_tmode_tstate *tstate;
 563                 struct     ahc_tmode_lstate *lstate;
 564                 cam_status status;
 565
 566                 status = ahc_find_tmode_devs(ahc, sim, ccb, &tstate,
 567                                              &lstate, TRUE);
 568
 569                 if (status != CAM_REQ_CMP) {
 570                         ccb->ccb_h.status = status;
 571                         xpt_done(ccb);
 572                         break;
 573                 }
 574                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
 575                                   sim_links.sle);
 576                 ccb->ccb_h.status = CAM_REQ_INPROG;
 577                 ahc_send_lstate_events(ahc, lstate);
 578                 break;
 579         }
 580         case XPT_EN_LUN:                /* Enable LUN as a target */
 581                 ahc_handle_en_lun(ahc, sim, ccb);
 582                 xpt_done(ccb);
 583                 break;
 584         case XPT_ABORT:                 /* Abort the specified CCB */
 585         {
 586                 ahc_abort_ccb(ahc, sim, ccb);
 587                 break;
 588         }
 589         case XPT_SET_TRAN_SETTINGS:
 590         {
 591 #ifdef AHC_NEW_TRAN_SETTINGS
 592                 struct  ahc_devinfo devinfo;
 593                 struct  ccb_trans_settings *cts;
 594                 struct  ccb_trans_settings_scsi *scsi;
 595                 struct  ccb_trans_settings_spi *spi;
 596                 struct  ahc_initiator_tinfo *tinfo;
 597                 struct  ahc_tmode_tstate *tstate;
 598                 uint16_t *discenable;
 599                 uint16_t *tagenable;
 600                 u_int   update_type;
 601
 602                 cts = &ccb->cts;
 603                 scsi = &cts->proto_specific.scsi;
 604                 spi = &cts->xport_specific.spi;
 605                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
 606                                     cts->ccb_h.target_id,
 607                                     cts->ccb_h.target_lun,
 608                                     SIM_CHANNEL(ahc, sim),
 609                                     ROLE_UNKNOWN);
 610                 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
 611                                             devinfo.our_scsiid,
 612                                             devinfo.target, &tstate);
 613                 update_type = 0;
 614                 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
 615                         update_type |= AHC_TRANS_GOAL;
 616                         discenable = &tstate->discenable;
 617                         tagenable = &tstate->tagenable;
 618                         tinfo->curr.protocol_version =
 619                             cts->protocol_version;
 620                         tinfo->curr.transport_version =
 621                             cts->transport_version;
 622                         tinfo->goal.protocol_version =
 623                             cts->protocol_version;
 624                         tinfo->goal.transport_version =
 625                             cts->transport_version;
 626                 } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
 627                         update_type |= AHC_TRANS_USER;
 628                         discenable = &ahc->user_discenable;
 629                         tagenable = &ahc->user_tagenable;
 630                         tinfo->user.protocol_version =
 631                             cts->protocol_version;
 632                         tinfo->user.transport_version =
 633                             cts->transport_version;
 634                 } else {
 635                         ccb->ccb_h.status = CAM_REQ_INVALID;
 636                         xpt_done(ccb);
 637                         break;
 638                 }
 639
 640                 ahc_lock();
 641
 642                 if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
 643                         if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
 644                                 *discenable |= devinfo.target_mask;
 645                         else
 646                                 *discenable &= ~devinfo.target_mask;
 647                 }
 648
 649                 if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
 650                         if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
 651                                 *tagenable |= devinfo.target_mask;
 652                         else
 653                                 *tagenable &= ~devinfo.target_mask;
 654                 }
 655
 656                 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
 657                         ahc_validate_width(ahc, /*tinfo limit*/NULL,
 658                                            &spi->bus_width, ROLE_UNKNOWN);
 659                         ahc_set_width(ahc, &devinfo, spi->bus_width,
 660                                       update_type, /*paused*/FALSE);
 661                 }
 662
 663                 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
 664                         if (update_type == AHC_TRANS_USER)
 665                                 spi->ppr_options = tinfo->user.ppr_options;
 666                         else
 667                                 spi->ppr_options = tinfo->goal.ppr_options;
 668                 }
 669
 670                 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
 671                         if (update_type == AHC_TRANS_USER)
 672                                 spi->sync_offset = tinfo->user.offset;
 673                         else
 674                                 spi->sync_offset = tinfo->goal.offset;
 675                 }
 676
 677                 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
 678                         if (update_type == AHC_TRANS_USER)
 679                                 spi->sync_period = tinfo->user.period;
 680                         else
 681                                 spi->sync_period = tinfo->goal.period;
 682                 }
 683
 684                 if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
 685                  || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
 686                         struct ahc_syncrate *syncrate;
 687                         u_int maxsync;
 688
 689                         if ((ahc->features & AHC_ULTRA2) != 0)
 690                                 maxsync = AHC_SYNCRATE_DT;
 691                         else if ((ahc->features & AHC_ULTRA) != 0)
 692                                 maxsync = AHC_SYNCRATE_ULTRA;
 693                         else
 694                                 maxsync = AHC_SYNCRATE_FAST;
 695
 696                         if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
 697                                 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
 698
 699                         syncrate = ahc_find_syncrate(ahc, &spi->sync_period,
 700                                                      &spi->ppr_options,
 701                                                      maxsync);
 702                         ahc_validate_offset(ahc, /*tinfo limit*/NULL,
 703                                             syncrate, &spi->sync_offset,
 704                                             spi->bus_width, ROLE_UNKNOWN);
 705
 706                         /* We use a period of 0 to represent async */
 707                         if (spi->sync_offset == 0) {
 708                                 spi->sync_period = 0;
 709                                 spi->ppr_options = 0;
 710                         }
 711
 712                         ahc_set_syncrate(ahc, &devinfo, syncrate,
 713                                          spi->sync_period, spi->sync_offset,
 714                                          spi->ppr_options, update_type,
 715                                          /*paused*/FALSE);
 716                 }
 717                 ahc_unlock();
 718                 ccb->ccb_h.status = CAM_REQ_CMP;
 719                 xpt_done(ccb);
 720 #else
 721                 struct    ahc_devinfo devinfo;
 722                 struct    ccb_trans_settings *cts;
 723                 struct    ahc_initiator_tinfo *tinfo;
 724                 struct    ahc_tmode_tstate *tstate;
 725                 uint16_t *discenable;
 726                 uint16_t *tagenable;
 727                 u_int     update_type;
 728
 729                 cts = &ccb->cts;
 730                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
 731                                     cts->ccb_h.target_id,
 732                                     cts->ccb_h.target_lun,
 733                                     SIM_CHANNEL(ahc, sim),
 734                                     ROLE_UNKNOWN);
 735                 tinfo = ahc_fetch_transinfo(ahc, devinfo.channel,
 736                                             devinfo.our_scsiid,
 737                                             devinfo.target, &tstate);
 738                 update_type = 0;
 739                 if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) {
 740                         update_type |= AHC_TRANS_GOAL;
 741                         discenable = &tstate->discenable;
 742                         tagenable = &tstate->tagenable;
 743                 } else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
 744                         update_type |= AHC_TRANS_USER;
 745                         discenable = &ahc->user_discenable;
 746                         tagenable = &ahc->user_tagenable;
 747                 } else {
 748                         ccb->ccb_h.status = CAM_REQ_INVALID;
 749                         xpt_done(ccb);
 750                         break;
 751                 }
 752
 753                 ahc_lock();
 754
 755                 if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
 756                         if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
 757                                 *discenable |= devinfo.target_mask;
 758                         else
 759                                 *discenable &= ~devinfo.target_mask;
 760                 }
 761
 762                 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
 763                         if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
 764                                 *tagenable |= devinfo.target_mask;
 765                         else
 766                                 *tagenable &= ~devinfo.target_mask;
 767                 }
 768
 769                 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
 770                         ahc_validate_width(ahc, /*tinfo limit*/NULL,
 771                                            &cts->bus_width, ROLE_UNKNOWN);
 772                         ahc_set_width(ahc, &devinfo, cts->bus_width,
 773                                       update_type, /*paused*/FALSE);
 774                 }
 775
 776                 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) {
 777                         if (update_type == AHC_TRANS_USER)
 778                                 cts->sync_offset = tinfo->user.offset;
 779                         else
 780                                 cts->sync_offset = tinfo->goal.offset;
 781                 }
 782
 783                 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) {
 784                         if (update_type == AHC_TRANS_USER)
 785                                 cts->sync_period = tinfo->user.period;
 786                         else
 787                                 cts->sync_period = tinfo->goal.period;
 788                 }
 789
 790                 if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
 791                  || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)) {
 792                         struct ahc_syncrate *syncrate;
 793                         u_int ppr_options;
 794                         u_int maxsync;
 795
 796                         if ((ahc->features & AHC_ULTRA2) != 0)
 797                                 maxsync = AHC_SYNCRATE_DT;
 798                         else if ((ahc->features & AHC_ULTRA) != 0)
 799                                 maxsync = AHC_SYNCRATE_ULTRA;
 800                         else
 801                                 maxsync = AHC_SYNCRATE_FAST;
 802
 803                         ppr_options = 0;
 804                         if (cts->sync_period <= 9
 805                          && cts->bus_width == MSG_EXT_WDTR_BUS_16_BIT)
 806                                 ppr_options = MSG_EXT_PPR_DT_REQ;
 807
 808                         syncrate = ahc_find_syncrate(ahc, &cts->sync_period,
 809                                                      &ppr_options,
 810                                                      maxsync);
 811                         ahc_validate_offset(ahc, /*tinfo limit*/NULL,
 812                                             syncrate, &cts->sync_offset,
 813                                             MSG_EXT_WDTR_BUS_8_BIT,
 814                                             ROLE_UNKNOWN);
 815
 816                         /* We use a period of 0 to represent async */
 817                         if (cts->sync_offset == 0) {
 818                                 cts->sync_period = 0;
 819                                 ppr_options = 0;
 820                         }
 821
 822                         if (ppr_options == MSG_EXT_PPR_DT_REQ
 823                          && tinfo->user.transport_version >= 3) {
 824                                 tinfo->goal.transport_version =
 825                                     tinfo->user.transport_version;
 826                                 tinfo->curr.transport_version =
 827                                     tinfo->user.transport_version;
 828                         }
 829
 830                         ahc_set_syncrate(ahc, &devinfo, syncrate,
 831                                          cts->sync_period, cts->sync_offset,
 832                                          ppr_options, update_type,
 833                                          /*paused*/FALSE);
 834                 }
 835                 ahc_unlock();
 836                 ccb->ccb_h.status = CAM_REQ_CMP;
 837                 xpt_done(ccb);
 838 #endif
 839                 break;
 840         }
 841         case XPT_GET_TRAN_SETTINGS:
 842         /* Get default/user set transfer settings for the target */
 843         {
 844
 845                 ahc_lock();
 846                 ahc_get_tran_settings(ahc, SIM_SCSI_ID(ahc, sim),
 847                                       SIM_CHANNEL(ahc, sim), &ccb->cts);
 848                 ahc_unlock();
 849                 xpt_done(ccb);
 850                 break;
 851         }
 852         case XPT_CALC_GEOMETRY:
 853         {
 854                 int extended;
 855
 856                 extended = SIM_IS_SCSIBUS_B(ahc, sim)
 857                          ? ahc->flags & AHC_EXTENDED_TRANS_B
 858                          : ahc->flags & AHC_EXTENDED_TRANS_A;
 859                 cam_calc_geometry(&ccb->ccg, extended);
 860                 xpt_done(ccb);
 861                 break;
 862         }
 863         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
 864         {
 865                 int  found;
 866
 867                 ahc_lock();
 868                 found = ahc_reset_channel(ahc, SIM_CHANNEL(ahc, sim),
 869                                           /*initiate reset*/TRUE);
 870                 ahc_unlock();
 871                 if (bootverbose) {
 872                         xpt_print_path(SIM_PATH(ahc, sim));
 873                         kprintf("SCSI bus reset delivered. "
 874                                "%d SCBs aborted.\n", found);
 875                 }
 876                 ccb->ccb_h.status = CAM_REQ_CMP;
 877                 xpt_done(ccb);
 878                 break;
 879         }
 880         case XPT_TERM_IO:               /* Terminate the I/O process */
 881                 /* XXX Implement */
 882                 ccb->ccb_h.status = CAM_REQ_INVALID;
 883                 xpt_done(ccb);
 884                 break;
 885         case XPT_PATH_INQ:              /* Path routing inquiry */
 886         {
 887                 struct ccb_pathinq *cpi = &ccb->cpi;
 888
 889                 cpi->version_num = 1; /* XXX??? */
 890                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
 891                 if ((ahc->features & AHC_WIDE) != 0)
 892                         cpi->hba_inquiry |= PI_WIDE_16;
 893                 if ((ahc->features & AHC_TARGETMODE) != 0) {
 894                         cpi->target_sprt = PIT_PROCESSOR
 895                                          | PIT_DISCONNECT
 896                                          | PIT_TERM_IO;
 897                 } else {
 898                         cpi->target_sprt = 0;
 899                 }
 900                 cpi->hba_misc = 0;
 901                 cpi->hba_eng_cnt = 0;
 902                 cpi->max_target = (ahc->features & AHC_WIDE) ? 15 : 7;
 903                 cpi->max_lun = AHC_NUM_LUNS - 1;
 904                 if (SIM_IS_SCSIBUS_B(ahc, sim)) {
 905                         cpi->initiator_id = ahc->our_id_b;
 906                         if ((ahc->flags & AHC_RESET_BUS_B) == 0)
 907                                 cpi->hba_misc |= PIM_NOBUSRESET;
 908                 } else {
 909                         cpi->initiator_id = ahc->our_id;
 910                         if ((ahc->flags & AHC_RESET_BUS_A) == 0)
 911                                 cpi->hba_misc |= PIM_NOBUSRESET;
 912                 }
 913                 cpi->bus_id = cam_sim_bus(sim);
 914                 cpi->base_transfer_speed = 3300;
 915                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
 916                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
 917                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
 918                 cpi->unit_number = cam_sim_unit(sim);
 919 #ifdef AHC_NEW_TRAN_SETTINGS
 920                 cpi->protocol = PROTO_SCSI;
 921                 cpi->protocol_version = SCSI_REV_2;
 922                 cpi->transport = XPORT_SPI;
 923                 cpi->transport_version = 2;
 924                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
 925                 if ((ahc->features & AHC_DT) != 0) {
 926                         cpi->transport_version = 3;
 927                         cpi->xport_specific.spi.ppr_options =
 928                             SID_SPI_CLOCK_DT_ST;
 929                 }
 930 #endif
 931                 cpi->ccb_h.status = CAM_REQ_CMP;
 932                 xpt_done(ccb);
 933                 break;
 934         }
 935         default:
 936                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
 937                 xpt_done(ccb);
 938                 break;
 939         }
 940 }
 941
 942 static void
 943 ahc_get_tran_settings(struct ahc_softc *ahc, int our_id, char channel,
 944                       struct ccb_trans_settings *cts)
 945 {
 946 #ifdef AHC_NEW_TRAN_SETTINGS
 947         struct  ahc_devinfo devinfo;
 948         struct  ccb_trans_settings_scsi *scsi;
 949         struct  ccb_trans_settings_spi *spi;
 950         struct  ahc_initiator_tinfo *targ_info;
 951         struct  ahc_tmode_tstate *tstate;
 952         struct  ahc_transinfo *tinfo;
 953
 954         scsi = &cts->proto_specific.scsi;
 955         spi = &cts->xport_specific.spi;
 956         ahc_compile_devinfo(&devinfo, our_id,
 957                             cts->ccb_h.target_id,
 958                             cts->ccb_h.target_lun,
 959                             channel, ROLE_UNKNOWN);
 960         targ_info = ahc_fetch_transinfo(ahc, devinfo.channel,
 961                                         devinfo.our_scsiid,
 962                                         devinfo.target, &tstate);
 963
 964         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
 965                 tinfo = &targ_info->curr;
 966         else
 967                 tinfo = &targ_info->user;
 968
 969         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
 970         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
 971         if (cts->type == CTS_TYPE_USER_SETTINGS) {
 972                 if ((ahc->user_discenable & devinfo.target_mask) != 0)
 973                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 974
 975                 if ((ahc->user_tagenable & devinfo.target_mask) != 0)
 976                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 977         } else {
 978                 if ((tstate->discenable & devinfo.target_mask) != 0)
 979                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
 980
 981                 if ((tstate->tagenable & devinfo.target_mask) != 0)
 982                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
 983         }
 984         cts->protocol_version = tinfo->protocol_version;
 985         cts->transport_version = tinfo->transport_version;
 986
 987         spi->sync_period = tinfo->period;
 988         spi->sync_offset = tinfo->offset;
 989         spi->bus_width = tinfo->width;
 990         spi->ppr_options = tinfo->ppr_options;
 991
 992         cts->protocol = PROTO_SCSI;
 993         cts->transport = XPORT_SPI;
 994         spi->valid = CTS_SPI_VALID_SYNC_RATE
 995                    | CTS_SPI_VALID_SYNC_OFFSET
 996                    | CTS_SPI_VALID_BUS_WIDTH
 997                    | CTS_SPI_VALID_PPR_OPTIONS;
 998
 999         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
1000                 scsi->valid = CTS_SCSI_VALID_TQ;
1001                 spi->valid |= CTS_SPI_VALID_DISC;
1002         } else {
1003                 scsi->valid = 0;
1004         }
1005
1006         cts->ccb_h.status = CAM_REQ_CMP;
1007 #else
1008         struct  ahc_devinfo devinfo;
1009         struct  ahc_initiator_tinfo *targ_info;
1010         struct  ahc_tmode_tstate *tstate;
1011         struct  ahc_transinfo *tinfo;
1012
1013         ahc_compile_devinfo(&devinfo, our_id,
1014                             cts->ccb_h.target_id,
1015                             cts->ccb_h.target_lun,
1016                             channel, ROLE_UNKNOWN);
1017         targ_info = ahc_fetch_transinfo(ahc, devinfo.channel,
1018                                         devinfo.our_scsiid,
1019                                         devinfo.target, &tstate);
1020
1021         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
1022                 tinfo = &targ_info->curr;
1023         else
1024                 tinfo = &targ_info->user;
1025
1026         cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
1027         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) == 0) {
1028                 if ((ahc->user_discenable & devinfo.target_mask) != 0)
1029                         cts->flags |= CCB_TRANS_DISC_ENB;
1030
1031                 if ((ahc->user_tagenable & devinfo.target_mask) != 0)
1032                         cts->flags |= CCB_TRANS_TAG_ENB;
1033         } else {
1034                 if ((tstate->discenable & devinfo.target_mask) != 0)
1035                         cts->flags |= CCB_TRANS_DISC_ENB;
1036
1037                 if ((tstate->tagenable & devinfo.target_mask) != 0)
1038                         cts->flags |= CCB_TRANS_TAG_ENB;
1039         }
1040         cts->sync_period = tinfo->period;
1041         cts->sync_offset = tinfo->offset;
1042         cts->bus_width = tinfo->width;
1043
1044         cts->valid = CCB_TRANS_SYNC_RATE_VALID
1045                    | CCB_TRANS_SYNC_OFFSET_VALID
1046                    | CCB_TRANS_BUS_WIDTH_VALID;
1047
1048         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD)
1049                 cts->valid |= CCB_TRANS_DISC_VALID|CCB_TRANS_TQ_VALID;
1050
1051         cts->ccb_h.status = CAM_REQ_CMP;
1052 #endif
1053 }
1054
1055 static void
1056 ahc_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
1057 {
1058         struct ahc_softc *ahc;
1059         struct cam_sim *sim;
1060
1061         sim = (struct cam_sim *)callback_arg;
1062         ahc = (struct ahc_softc *)cam_sim_softc(sim);
1063         switch (code) {
1064         case AC_LOST_DEVICE:
1065         {
1066                 struct  ahc_devinfo devinfo;
1067
1068                 ahc_compile_devinfo(&devinfo, SIM_SCSI_ID(ahc, sim),
1069                                     xpt_path_target_id(path),
1070                                     xpt_path_lun_id(path),
1071                                     SIM_CHANNEL(ahc, sim),
1072                                     ROLE_UNKNOWN);
1073
1074                 /*
1075                  * Revert to async/narrow transfers
1076                  * for the next device.
1077                  */
1078                 ahc_lock();
1079                 ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
1080                               AHC_TRANS_GOAL|AHC_TRANS_CUR, /*paused*/FALSE);
1081                 ahc_set_syncrate(ahc, &devinfo, /*syncrate*/NULL,
1082                                  /*period*/0, /*offset*/0, /*ppr_options*/0,
1083                                  AHC_TRANS_GOAL|AHC_TRANS_CUR,
1084                                  /*paused*/FALSE);
1085                 ahc_unlock();
1086                 break;
1087         }
1088         default:
1089                 break;
1090         }
1091 }
1092
1093 static void
1094 ahc_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
1095                 int error)
1096 {
1097         struct  scb *scb;
1098         union   ccb *ccb;
1099         struct  ahc_softc *ahc;
1100         struct  ahc_initiator_tinfo *tinfo;
1101         struct  ahc_tmode_tstate *tstate;
1102         u_int   mask;
1103
1104         scb = (struct scb *)arg;
1105         ccb = scb->io_ctx;
1106         ahc = scb->ahc_softc;
1107
1108         if (error != 0) {
1109                 if (error == EFBIG)
1110                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
1111                 else
1112                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
1113                 if (nsegments != 0)
1114                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
1115                 ahc_lock();
1116                 ahc_free_scb(ahc, scb);
1117                 ahc_unlock();
1118                 xpt_done(ccb);
1119                 return;
1120         }
1121         if (nsegments != 0) {
1122                 struct    ahc_dma_seg *sg;
1123                 bus_dma_segment_t *end_seg;
1124                 bus_dmasync_op_t op;
1125
1126                 end_seg = dm_segs + nsegments;
1127
1128                 /* Copy the segments into our SG list */
1129                 sg = scb->sg_list;
1130                 while (dm_segs < end_seg) {
1131                         uint32_t len;
1132
1133                         sg->addr = aic_htole32(dm_segs->ds_addr);
1134                         len = dm_segs->ds_len
1135                             | ((dm_segs->ds_addr >> 8) & 0x7F000000);
1136                         sg->len = aic_htole32(len);
1137                         sg++;
1138                         dm_segs++;
1139                 }
1140
1141                 /*
1142                  * Note where to find the SG entries in bus space.
1143                  * We also set the full residual flag which the
1144                  * sequencer will clear as soon as a data transfer
1145                  * occurs.
1146                  */
1147                 scb->hscb->sgptr = aic_htole32(scb->sg_list_phys|SG_FULL_RESID);
1148
1149                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1150                         op = BUS_DMASYNC_PREREAD;
1151                 else
1152                         op = BUS_DMASYNC_PREWRITE;
1153
1154                 bus_dmamap_sync(ahc->buffer_dmat, scb->dmamap, op);
1155
1156                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
1157                         struct target_data *tdata;
1158
1159                         tdata = &scb->hscb->shared_data.tdata;
1160                         tdata->target_phases |= DPHASE_PENDING;
1161                         /*
1162                          * CAM data direction is relative to the initiator.
1163                          */
1164                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
1165                                 tdata->data_phase = P_DATAOUT;
1166                         else
1167                                 tdata->data_phase = P_DATAIN;
1168
1169                         /*
1170                          * If the transfer is of an odd length and in the
1171                          * "in" direction (scsi->HostBus), then it may
1172                          * trigger a bug in the 'WideODD' feature of
1173                          * non-Ultra2 chips.  Force the total data-length
1174                          * to be even by adding an extra, 1 byte, SG,
1175                          * element.  We do this even if we are not currently
1176                          * negotiated wide as negotiation could occur before
1177                          * this command is executed.
1178                          */
1179                         if ((ahc->bugs & AHC_TMODE_WIDEODD_BUG) != 0
1180                          && (ccb->csio.dxfer_len & 0x1) != 0
1181                          && (ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
1182
1183                                 nsegments++;
1184                                 if (nsegments > AHC_NSEG) {
1185
1186                                         aic_set_transaction_status(scb,
1187                                             CAM_REQ_TOO_BIG);
1188                                         bus_dmamap_unload(ahc->buffer_dmat,
1189                                                           scb->dmamap);
1190                                         ahc_lock();
1191                                         ahc_free_scb(ahc, scb);
1192                                         ahc_unlock();
1193                                         xpt_done(ccb);
1194                                         return;
1195                                 }
1196                                 sg->addr = aic_htole32(ahc->dma_bug_buf);
1197                                 sg->len = aic_htole32(1);
1198                                 sg++;
1199                         }
1200                 }
1201                 sg--;
1202                 sg->len |= aic_htole32(AHC_DMA_LAST_SEG);
1203
1204                 /* Copy the first SG into the "current" data pointer area */
1205                 scb->hscb->dataptr = scb->sg_list->addr;
1206                 scb->hscb->datacnt = scb->sg_list->len;
1207         } else {
1208                 scb->hscb->sgptr = aic_htole32(SG_LIST_NULL);
1209                 scb->hscb->dataptr = 0;
1210                 scb->hscb->datacnt = 0;
1211         }
1212
1213         scb->sg_count = nsegments;
1214
1215         ahc_lock();
1216
1217         /*
1218          * Last time we need to check if this SCB needs to
1219          * be aborted.
1220          */
1221         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
1222                 if (nsegments != 0)
1223                         bus_dmamap_unload(ahc->buffer_dmat, scb->dmamap);
1224                 ahc_free_scb(ahc, scb);
1225                 ahc_unlock();
1226                 xpt_done(ccb);
1227                 return;
1228         }
1229
1230         tinfo = ahc_fetch_transinfo(ahc, SCSIID_CHANNEL(ahc, scb->hscb->scsiid),
1231                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1232                                     SCSIID_TARGET(ahc, scb->hscb->scsiid),
1233                                     &tstate);
1234
1235         mask = SCB_GET_TARGET_MASK(ahc, scb);
1236         scb->hscb->scsirate = tinfo->scsirate;
1237         scb->hscb->scsioffset = tinfo->curr.offset;
1238         if ((tstate->ultraenb & mask) != 0)
1239                 scb->hscb->control |= ULTRAENB;
1240
1241         if ((tstate->discenable & mask) != 0
1242          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1243                 scb->hscb->control |= DISCENB;
1244
1245         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1246          && (tinfo->goal.width != 0
1247           || tinfo->goal.offset != 0
1248           || tinfo->goal.ppr_options != 0)) {
1249                 scb->flags |= SCB_NEGOTIATE;
1250                 scb->hscb->control |= MK_MESSAGE;
1251         } else if ((tstate->auto_negotiate & mask) != 0) {
1252                 scb->flags |= SCB_AUTO_NEGOTIATE;
1253                 scb->hscb->control |= MK_MESSAGE;
1254         }
1255
1256         LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
1257
1258         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1259
1260         /*
1261          * We only allow one untagged transaction
1262          * per target in the initiator role unless
1263          * we are storing a full busy target *lun*
1264          * table in SCB space.
1265          */
1266         if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0
1267          && (ahc->flags & AHC_SCB_BTT) == 0) {
1268                 struct scb_tailq *untagged_q;
1269                 int target_offset;
1270
1271                 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
1272                 untagged_q = &(ahc->untagged_queues[target_offset]);
1273                 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
1274                 scb->flags |= SCB_UNTAGGEDQ;
1275                 if (TAILQ_FIRST(untagged_q) != scb) {
1276                         ahc_unlock();
1277                         return;
1278                 }
1279         }
1280         scb->flags |= SCB_ACTIVE;
1281
1282         /*
1283          * Timers are disabled while recovery is in progress.
1284          */
1285         aic_scb_timer_start(scb);
1286
1287         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1288                 /* Define a mapping from our tag to the SCB. */
1289                 ahc->scb_data->scbindex[scb->hscb->tag] = scb;
1290                 ahc_pause(ahc);
1291                 if ((ahc->flags & AHC_PAGESCBS) == 0)
1292                         ahc_outb(ahc, SCBPTR, scb->hscb->tag);
1293                 ahc_outb(ahc, TARG_IMMEDIATE_SCB, scb->hscb->tag);
1294                 ahc_unpause(ahc);
1295         } else {
1296                 ahc_queue_scb(ahc, scb);
1297         }
1298
1299         ahc_unlock();
1300 }
1301
1302 static void
1303 ahc_poll(struct cam_sim *sim)
1304 {
1305         struct ahc_softc *ahc;
1306
1307         ahc = (struct ahc_softc *)cam_sim_softc(sim);
1308         ahc_intr(ahc);
1309 }
1310
1311 static void
1312 ahc_setup_data(struct ahc_softc *ahc, struct cam_sim *sim,
1313                struct ccb_scsiio *csio, struct scb *scb)
1314 {
1315         struct hardware_scb *hscb;
1316         struct ccb_hdr *ccb_h;
1317
1318         hscb = scb->hscb;
1319         ccb_h = &csio->ccb_h;
1320
1321         csio->resid = 0;
1322         csio->sense_resid = 0;
1323         if (ccb_h->func_code == XPT_SCSI_IO) {
1324                 hscb->cdb_len = csio->cdb_len;
1325                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1326
1327                         if (hscb->cdb_len > sizeof(hscb->cdb32)
1328                          || (ccb_h->flags & CAM_CDB_PHYS) != 0) {
1329                                 aic_set_transaction_status(scb,
1330                                                            CAM_REQ_INVALID);
1331                                 ahc_lock();
1332                                 ahc_free_scb(ahc, scb);
1333                                 ahc_unlock();
1334                                 xpt_done((union ccb *)csio);
1335                                 return;
1336                         }
1337                         if (hscb->cdb_len > 12) {
1338                                 memcpy(hscb->cdb32,
1339                                        csio->cdb_io.cdb_ptr,
1340                                        hscb->cdb_len);
1341                                 scb->flags |= SCB_CDB32_PTR;
1342                         } else {
1343                                 memcpy(hscb->shared_data.cdb,
1344                                        csio->cdb_io.cdb_ptr,
1345                                        hscb->cdb_len);
1346                         }
1347                 } else {
1348                         if (hscb->cdb_len > 12) {
1349                                 memcpy(hscb->cdb32, csio->cdb_io.cdb_bytes,
1350                                        hscb->cdb_len);
1351                                 scb->flags |= SCB_CDB32_PTR;
1352                         } else {
1353                                 memcpy(hscb->shared_data.cdb,
1354                                        csio->cdb_io.cdb_bytes,
1355                                        hscb->cdb_len);
1356                         }
1357                 }
1358         }
1359
1360         /* Only use S/G if there is a transfer */
1361         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1362                 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
1363                         /* We've been given a pointer to a single buffer */
1364                         if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
1365                                 int error;
1366
1367                                 crit_enter();
1368                                 error = bus_dmamap_load(ahc->buffer_dmat,
1369                                                         scb->dmamap,
1370                                                         csio->data_ptr,
1371                                                         csio->dxfer_len,
1372                                                         ahc_execute_scb,
1373                                                         scb, /*flags*/0);
1374                                 if (error == EINPROGRESS) {
1375                                         /*
1376                                          * So as to maintain ordering,
1377                                          * freeze the controller queue
1378                                          * until our mapping is
1379                                          * returned.
1380                                          */
1381                                         xpt_freeze_simq(sim,
1382                                                         /*count*/1);
1383                                         scb->io_ctx->ccb_h.status |=
1384                                             CAM_RELEASE_SIMQ;
1385                                 }
1386                                 crit_exit();
1387                         } else {
1388                                 struct bus_dma_segment seg;
1389
1390                                 /* Pointer to physical buffer */
1391                                 if (csio->dxfer_len > AHC_MAXTRANSFER_SIZE)
1392                                         panic("ahc_setup_data - Transfer size "
1393                                               "larger than can device max");
1394
1395                                 seg.ds_addr =
1396                                     (bus_addr_t)(vm_offset_t)csio->data_ptr;
1397                                 seg.ds_len = csio->dxfer_len;
1398                                 ahc_execute_scb(scb, &seg, 1, 0);
1399                         }
1400                 } else {
1401                         struct bus_dma_segment *segs;
1402
1403                         if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
1404                                 panic("ahc_setup_data - Physical segment "
1405                                       "pointers unsupported");
1406
1407                         if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
1408                                 panic("ahc_setup_data - Virtual segment "
1409                                       "addresses unsupported");
1410
1411                         /* Just use the segments provided */
1412                         segs = (struct bus_dma_segment *)csio->data_ptr;
1413                         ahc_execute_scb(scb, segs, csio->sglist_cnt, 0);
1414                 }
1415         } else {
1416                 ahc_execute_scb(scb, NULL, 0, 0);
1417         }
1418 }
1419
1420 static void
1421 ahc_abort_ccb(struct ahc_softc *ahc, struct cam_sim *sim, union ccb *ccb)
1422 {
1423         union ccb *abort_ccb;
1424
1425         abort_ccb = ccb->cab.abort_ccb;
1426         switch (abort_ccb->ccb_h.func_code) {
1427         case XPT_ACCEPT_TARGET_IO:
1428         case XPT_IMMED_NOTIFY:
1429         case XPT_CONT_TARGET_IO:
1430         {
1431                 struct ahc_tmode_tstate *tstate;
1432                 struct ahc_tmode_lstate *lstate;
1433                 struct ccb_hdr_slist *list;
1434                 cam_status status;
1435
1436                 status = ahc_find_tmode_devs(ahc, sim, abort_ccb, &tstate,
1437                                              &lstate, TRUE);
1438
1439                 if (status != CAM_REQ_CMP) {
1440                         ccb->ccb_h.status = status;
1441                         break;
1442                 }
1443
1444                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1445                         list = &lstate->accept_tios;
1446                 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
1447                         list = &lstate->immed_notifies;
1448                 else
1449                         list = NULL;
1450
1451                 if (list != NULL) {
1452                         struct ccb_hdr *curelm;
1453                         int found;
1454
1455                         curelm = SLIST_FIRST(list);
1456                         found = 0;
1457                         if (curelm == &abort_ccb->ccb_h) {
1458                                 found = 1;
1459                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1460                         } else {
1461                                 while(curelm != NULL) {
1462                                         struct ccb_hdr *nextelm;
1463
1464                                         nextelm =
1465                                             SLIST_NEXT(curelm, sim_links.sle);
1466
1467                                         if (nextelm == &abort_ccb->ccb_h) {
1468                                                 found = 1;
1469                                                 SLIST_NEXT(curelm,
1470                                                            sim_links.sle) =
1471                                                     SLIST_NEXT(nextelm,
1472                                                                sim_links.sle);
1473                                                 break;
1474                                         }
1475                                         curelm = nextelm;
1476                                 }
1477                         }
1478
1479                         if (found) {
1480                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1481                                 xpt_done(abort_ccb);
1482                                 ccb->ccb_h.status = CAM_REQ_CMP;
1483                         } else {
1484                                 xpt_print_path(abort_ccb->ccb_h.path);
1485                                 kprintf("Not found\n");
1486                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1487                         }
1488                         break;
1489                 }
1490                 /* FALLTHROUGH */
1491         }
1492         case XPT_SCSI_IO:
1493                 /* XXX Fully implement the hard ones */
1494                 ccb->ccb_h.status = CAM_UA_ABORT;
1495                 break;
1496         default:
1497                 ccb->ccb_h.status = CAM_REQ_INVALID;
1498                 break;
1499         }
1500         xpt_done(ccb);
1501 }
1502
1503 void
1504 ahc_send_async(struct ahc_softc *ahc, char channel, u_int target,
1505                 u_int lun, ac_code code, void *opt_arg)
1506 {
1507         struct  ccb_trans_settings cts;
1508         struct cam_path *path;
1509         void *arg;
1510         int error;
1511
1512         arg = NULL;
1513         error = ahc_create_path(ahc, channel, target, lun, &path);
1514
1515         if (error != CAM_REQ_CMP)
1516                 return;
1517
1518         switch (code) {
1519         case AC_TRANSFER_NEG:
1520         {
1521 #ifdef AHC_NEW_TRAN_SETTINGS
1522                 struct  ccb_trans_settings_scsi *scsi;
1523
1524                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1525                 scsi = &cts.proto_specific.scsi;
1526 #else
1527                 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1528 #endif
1529                 cts.ccb_h.path = path;
1530                 cts.ccb_h.target_id = target;
1531                 cts.ccb_h.target_lun = lun;
1532                 ahc_get_tran_settings(ahc, channel == 'A' ? ahc->our_id
1533                                                           : ahc->our_id_b,
1534                                       channel, &cts);
1535                 arg = &cts;
1536 #ifdef AHC_NEW_TRAN_SETTINGS
1537                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1538                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1539 #else
1540                 cts.valid &= ~CCB_TRANS_TQ_VALID;
1541                 cts.flags &= ~CCB_TRANS_TAG_ENB;
1542 #endif
1543                 if (opt_arg == NULL)
1544                         break;
1545                 if (*((ahc_queue_alg *)opt_arg) == AHC_QUEUE_TAGGED)
1546 #ifdef AHC_NEW_TRAN_SETTINGS
1547                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1548                 scsi->valid |= CTS_SCSI_VALID_TQ;
1549 #else
1550                         cts.flags |= CCB_TRANS_TAG_ENB;
1551                 cts.valid |= CCB_TRANS_TQ_VALID;
1552 #endif
1553                 break;
1554         }
1555         case AC_SENT_BDR:
1556         case AC_BUS_RESET:
1557                 break;
1558         default:
1559                 panic("ahc_send_async: Unexpected async event");
1560         }
1561         xpt_async(code, path, arg);
1562         xpt_free_path(path);
1563 }
1564
1565 void
1566 ahc_platform_set_tags(struct ahc_softc *ahc,
1567                       struct ahc_devinfo *devinfo, int enable)
1568 {
1569 }
1570
1571 int
1572 ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
1573 {
1574         ahc->platform_data = kmalloc(sizeof(struct ahc_platform_data), M_DEVBUF,
1575                                     M_INTWAIT | M_ZERO);
1576         return (0);
1577 }
1578
1579 void
1580 ahc_platform_free(struct ahc_softc *ahc)
1581 {
1582         struct ahc_platform_data *pdata;
1583
1584         pdata = ahc->platform_data;
1585         if (pdata != NULL) {
1586                 if (pdata->regs != NULL)
1587                         bus_release_resource(ahc->dev_softc,
1588                                              pdata->regs_res_type,
1589                                              pdata->regs_res_id,
1590                                              pdata->regs);
1591
1592                 if (pdata->irq != NULL)
1593                         bus_release_resource(ahc->dev_softc,
1594                                              pdata->irq_res_type,
1595                                              0, pdata->irq);
1596
1597                 if (pdata->sim_b != NULL) {
1598                         xpt_async(AC_LOST_DEVICE, pdata->path_b, NULL);
1599                         xpt_free_path(pdata->path_b);
1600                         xpt_bus_deregister(cam_sim_path(pdata->sim_b));
1601                         cam_sim_free(pdata->sim_b);
1602                 }
1603                 if (pdata->sim != NULL) {
1604                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1605                         xpt_free_path(pdata->path);
1606                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1607                         cam_sim_free(pdata->sim);
1608                 }
1609                 if (pdata->eh != NULL)
1610                         EVENTHANDLER_DEREGISTER(shutdown_post_sync, pdata->eh);
1611                 kfree(ahc->platform_data, M_DEVBUF);
1612         }
1613 }
1614
1615 int
1616 ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc)
1617 {
1618         /* We don't sort softcs under FreeBSD so report equal always */
1619         return (0);
1620 }
1621
1622 int
1623 ahc_detach(device_t dev)
1624 {
1625         struct ahc_softc *ahc;
1626
1627         device_printf(dev, "detaching device\n");
1628         ahc = device_get_softc(dev);
1629         ahc = ahc_find_softc(ahc);
1630         if (ahc == NULL) {
1631                 device_printf(dev, "aic7xxx already detached\n");
1632                 return (ENOENT);
1633         }
1634         TAILQ_REMOVE(&ahc_tailq, ahc, links);
1635         ahc_lock();
1636         ahc_intr_enable(ahc, FALSE);
1637         bus_teardown_intr(dev, ahc->platform_data->irq, ahc->platform_data->ih);
1638         ahc_unlock();
1639         ahc_free(ahc);
1640         return (0);
1641 }
1642
1643 #if 0
1644 static void
1645 ahc_dump_targcmd(struct target_cmd *cmd)
1646 {
1647         uint8_t *byte;
1648         uint8_t *last_byte;
1649         int i;
1650
1651         byte = &cmd->initiator_channel;
1652         /* Debugging info for received commands */
1653         last_byte = &cmd[1].initiator_channel;
1654
1655         i = 0;
1656         while (byte < last_byte) {
1657                 if (i == 0)
1658                         kprintf("\t");
1659                 kprintf("%#x", *byte++);
1660                 i++;
1661                 if (i == 8) {
1662                         kprintf("\n");
1663                         i = 0;
1664                 } else {
1665                         kprintf(", ");
1666                 }
1667         }
1668 }
1669 #endif
1670
1671 static int
1672 ahc_modevent(module_t mod, int type, void *data)
1673 {
1674         /* XXX Deal with busy status on unload. */
1675         return 0;
1676 }
1677
1678 static moduledata_t ahc_mod = {
1679         "ahc",
1680         ahc_modevent,
1681         NULL
1682 };
1683
1684 DECLARE_MODULE(ahc, ahc_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1685 MODULE_DEPEND(ahc, cam, 1, 1, 1);
1686 MODULE_VERSION(ahc, 1);