360dea5c6ea7196fdc7e3139b1c11cb210949697
[dragonfly.git] / sys / dev / disk / aic7xxx / aic79xx_osm.c
1 /*
2  * Bus independent FreeBSD shim for the aic79xx based Adaptec SCSI controllers
3  *
4  * Copyright (c) 1994-2002, 2004 Justin T. Gibbs.
5  * Copyright (c) 2001-2002 Adaptec Inc.
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions, and the following disclaimer,
13  *    without modification.
14  * 2. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * Alternatively, this software may be distributed under the terms of the
18  * GNU Public License ("GPL").
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.c#35 $
33  *
34  * $FreeBSD: src/sys/dev/aic7xxx/aic79xx_osm.c,v 1.23 2005/12/04 02:12:40 ru Exp $
35  * $DragonFly: src/sys/dev/disk/aic7xxx/aic79xx_osm.c,v 1.21 2007/07/11 23:46:58 dillon Exp $
36  */
37
38 #include "aic79xx_osm.h"
39 #include "aic79xx_inline.h"
40
41 #include <sys/kthread.h>
42
43 #include "opt_ddb.h"
44 #ifdef DDB
45 #include <ddb/ddb.h>
46 #endif
47
48 #ifndef AHD_TMODE_ENABLE
49 #define AHD_TMODE_ENABLE 0
50 #endif
51
52 #include "aic_osm_lib.c"
53
54 #define ccb_scb_ptr spriv_ptr0
55
56 #if 0
57 static void     ahd_dump_targcmd(struct target_cmd *cmd);
58 #endif
59 static int      ahd_modevent(module_t mod, int type, void *data);
60 static void     ahd_action(struct cam_sim *sim, union ccb *ccb);
61 static void     ahd_set_tran_settings(struct ahd_softc *ahd,
62                                       int our_id, char channel,
63                                       struct ccb_trans_settings *cts);
64 static void     ahd_get_tran_settings(struct ahd_softc *ahd,
65                                       int our_id, char channel,
66                                       struct ccb_trans_settings *cts);
67 static void     ahd_async(void *callback_arg, uint32_t code,
68                           struct cam_path *path, void *arg);
69 static void     ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs,
70                                 int nsegments, int error);
71 static void     ahd_poll(struct cam_sim *sim);
72 static void     ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
73                                struct ccb_scsiio *csio, struct scb *scb);
74 static void     ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim,
75                               union ccb *ccb);
76 static int      ahd_create_path(struct ahd_softc *ahd,
77                                 char channel, u_int target, u_int lun,
78                                 struct cam_path **path);
79
80 static 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         path_id = cam_sim_path(ahd->platform_data->sim);
87         return (xpt_create_path(path, /*periph*/NULL,
88                                 path_id, target, lun));
89 }
90
91 int
92 ahd_map_int(struct ahd_softc *ahd)
93 {
94         int error;
95
96         /* Hook up our interrupt handler */
97         error = bus_setup_intr(ahd->dev_softc, ahd->platform_data->irq,
98                                0, ahd_platform_intr, ahd,
99                                &ahd->platform_data->ih, NULL);
100         if (error != 0)
101                 device_printf(ahd->dev_softc, "bus_setup_intr() failed: %d\n",
102                               error);
103         return (error);
104 }
105
106 /*
107  * Attach all the sub-devices we can find
108  */
109 int
110 ahd_attach(struct ahd_softc *ahd)
111 {
112         char   ahd_info[256];
113         struct ccb_setasync csa;
114         struct cam_sim *sim;
115         struct cam_path *path;
116         int count;
117
118         count = 0;
119         sim = NULL;
120
121         /*
122          * Create a thread to perform all recovery.
123          */
124         if (ahd_spawn_recovery_thread(ahd) != 0)
125                 goto fail;
126
127         ahd_controller_info(ahd, ahd_info);
128         kprintf("%s\n", ahd_info);
129         ahd_lock();
130
131         /*
132          * Construct our SIM entry
133          */
134         sim = cam_sim_alloc(ahd_action, ahd_poll, "ahd", ahd,
135                             device_get_unit(ahd->dev_softc),
136                             1, AHD_MAX_QUEUE, NULL);
137         if (sim == NULL)
138                 goto fail;
139
140         if (xpt_bus_register(sim, /*bus_id*/0) != CAM_SUCCESS) {
141                 cam_sim_free(sim);
142                 sim = NULL;
143                 goto fail;
144         }
145         
146         if (xpt_create_path(&path, /*periph*/NULL,
147                             cam_sim_path(sim), CAM_TARGET_WILDCARD,
148                             CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
149                 xpt_bus_deregister(cam_sim_path(sim));
150                 cam_sim_free(sim);
151                 sim = NULL;
152                 goto fail;
153         }
154                 
155         xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
156         csa.ccb_h.func_code = XPT_SASYNC_CB;
157         csa.event_enable = AC_LOST_DEVICE;
158         csa.callback = ahd_async;
159         csa.callback_arg = sim;
160         xpt_action((union ccb *)&csa);
161         count++;
162
163 fail:
164         ahd->platform_data->sim = sim;
165         ahd->platform_data->path = path;
166         if (count != 0) {
167                 /* We have to wait until after any system dumps... */
168                 ahd->platform_data->eh =
169                     EVENTHANDLER_REGISTER(shutdown_post_sync, ahd_shutdown,
170                                           ahd, SHUTDOWN_PRI_DRIVER);
171                 ahd_intr_enable(ahd, TRUE);
172         }
173
174         ahd_unlock();
175
176         return (count);
177 }
178
179 /*
180  * Catch an interrupt from the adapter
181  */
182 void
183 ahd_platform_intr(void *arg)
184 {
185         struct  ahd_softc *ahd;
186
187         ahd = (struct ahd_softc *)arg; 
188         ahd_intr(ahd);
189 }
190
191 /*
192  * We have an scb which has been processed by the
193  * adaptor, now we look to see how the operation
194  * went.
195  */
196 void
197 ahd_done(struct ahd_softc *ahd, struct scb *scb)
198 {
199         union ccb *ccb;
200
201         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
202                   ("ahd_done - scb %d\n", SCB_GET_TAG(scb)));
203
204         ccb = scb->io_ctx;
205         LIST_REMOVE(scb, pending_links);
206         if ((scb->flags & SCB_TIMEDOUT) != 0)
207                 LIST_REMOVE(scb, timedout_links);
208
209         callout_stop(&ccb->ccb_h.timeout_ch);
210
211         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
212                 bus_dmasync_op_t op;
213
214                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
215                         op = BUS_DMASYNC_POSTREAD;
216                 else
217                         op = BUS_DMASYNC_POSTWRITE;
218                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
219                 bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
220         }
221
222 #ifdef AHD_TARGET_MODE
223         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
224                 struct cam_path *ccb_path;
225
226                 /*
227                  * If we have finally disconnected, clean up our
228                  * pending device state.
229                  * XXX - There may be error states that cause where
230                  *       we will remain connected.
231                  */
232                 ccb_path = ccb->ccb_h.path;
233                 if (ahd->pending_device != NULL
234                  && xpt_path_comp(ahd->pending_device->path, ccb_path) == 0) {
235
236                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
237                                 ahd->pending_device = NULL;
238                         } else {
239                                 xpt_print_path(ccb->ccb_h.path);
240                                 kprintf("Still disconnected\n");
241                                 ahd_freeze_ccb(ccb);
242                         }
243                 }
244
245                 if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
246                         ccb->ccb_h.status |= CAM_REQ_CMP;
247                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
248                 ahd_free_scb(ahd, scb);
249                 xpt_done(ccb);
250                 return;
251         }
252 #endif
253
254         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
255                 struct  scb *list_scb;
256
257                 ahd->scb_data.recovery_scbs--;
258
259                 if (aic_get_transaction_status(scb) == CAM_BDR_SENT
260                  || aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
261                         aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
262
263                 if (ahd->scb_data.recovery_scbs == 0) {
264                         /*
265                          * All recovery actions have completed successfully,
266                          * so reinstate the timeouts for all other pending
267                          * commands.
268                          */
269                         LIST_FOREACH(list_scb,
270                                      &ahd->pending_scbs, pending_links) {
271
272                                 aic_scb_timer_reset(list_scb,
273                                                     aic_get_timeout(scb));
274                         }
275
276                         ahd_print_path(ahd, scb);
277                         kprintf("no longer in timeout, status = %x\n",
278                                ccb->ccb_h.status);
279                 }
280         }
281
282         /* Don't clobber any existing error state */
283         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
284                 ccb->ccb_h.status |= CAM_REQ_CMP;
285         } else if ((scb->flags & SCB_SENSE) != 0) {
286                 /*
287                  * We performed autosense retrieval.
288                  *
289                  * Zero any sense not transferred by the
290                  * device.  The SCSI spec mandates that any
291                  * untransfered data should be assumed to be
292                  * zero.  Complete the 'bounce' of sense information
293                  * through buffers accessible via bus-space by
294                  * copying it into the clients csio.
295                  */
296                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
297                 memcpy(&ccb->csio.sense_data,
298                        ahd_get_sense_buf(ahd, scb),
299 /* XXX What size do we want to use??? */
300                         sizeof(ccb->csio.sense_data)
301                        - ccb->csio.sense_resid);
302                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
303         } else if ((scb->flags & SCB_PKT_SENSE) != 0) {
304                 struct scsi_status_iu_header *siu;
305                 u_int sense_len;
306                 int i;
307
308                 /*
309                  * Copy only the sense data into the provided buffer.
310                  */
311                 siu = (struct scsi_status_iu_header *)scb->sense_data;
312                 sense_len = MIN(scsi_4btoul(siu->sense_length),
313                                 sizeof(ccb->csio.sense_data));
314                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
315                 memcpy(&ccb->csio.sense_data,
316                        ahd_get_sense_buf(ahd, scb) + SIU_SENSE_OFFSET(siu),
317                        sense_len);
318                 kprintf("Copied %d bytes of sense data offset %d:", sense_len,
319                        SIU_SENSE_OFFSET(siu));
320                 for (i = 0; i < sense_len; i++)
321                         kprintf(" 0x%x", ((uint8_t *)&ccb->csio.sense_data)[i]);
322                 kprintf("\n");
323                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
324         }
325         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
326         ahd_free_scb(ahd, scb);
327         xpt_done(ccb);
328 }
329
330 static void
331 ahd_action(struct cam_sim *sim, union ccb *ccb)
332 {
333         struct  ahd_softc *ahd;
334 #ifdef AHD_TARGET_MODE
335         struct  ahd_tmode_lstate *lstate;
336 #endif
337         u_int   target_id;
338         u_int   our_id;
339
340         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahd_action\n"));
341         
342         ahd = (struct ahd_softc *)cam_sim_softc(sim);
343
344         target_id = ccb->ccb_h.target_id;
345         our_id = SIM_SCSI_ID(ahd, sim);
346         
347         switch (ccb->ccb_h.func_code) {
348         /* Common cases first */
349 #ifdef AHD_TARGET_MODE
350         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
351         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
352         {
353                 struct     ahd_tmode_tstate *tstate;
354                 cam_status status;
355
356                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
357                                              &lstate, TRUE);
358
359                 if (status != CAM_REQ_CMP) {
360                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
361                                 /* Response from the black hole device */
362                                 tstate = NULL;
363                                 lstate = ahd->black_hole;
364                         } else {
365                                 ccb->ccb_h.status = status;
366                                 xpt_done(ccb);
367                                 break;
368                         }
369                 }
370                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
371
372                         ahd_lock();
373                         SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
374                                           sim_links.sle);
375                         ccb->ccb_h.status = CAM_REQ_INPROG;
376                         if ((ahd->flags & AHD_TQINFIFO_BLOCKED) != 0)
377                                 ahd_run_tqinfifo(ahd, /*paused*/FALSE);
378                         ahd_unlock();
379                         break;
380                 }
381
382                 /*
383                  * The target_id represents the target we attempt to
384                  * select.  In target mode, this is the initiator of
385                  * the original command.
386                  */
387                 our_id = target_id;
388                 target_id = ccb->csio.init_id;
389                 /* FALLTHROUGH */
390         }
391 #endif
392         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
393         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
394         {
395                 struct  scb *scb;
396                 struct  hardware_scb *hscb;     
397                 struct  ahd_initiator_tinfo *tinfo;
398                 struct  ahd_tmode_tstate *tstate;
399                 u_int   col_idx;
400
401                 if ((ahd->flags & AHD_INITIATORROLE) == 0
402                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
403                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
404                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
405                         xpt_done(ccb);
406                         return;
407                 }
408
409                 /*
410                  * get an scb to use.
411                  */
412                 ahd_lock();
413                 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
414                                             target_id, &tstate);
415                 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
416                  || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
417                  || ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
418                         col_idx = AHD_NEVER_COL_IDX;
419                 } else {
420                         col_idx = AHD_BUILD_COL_IDX(target_id,
421                                                     ccb->ccb_h.target_lun);
422                 }
423                 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
424         
425                         xpt_freeze_simq(sim, /*count*/1);
426                         ahd->flags |= AHD_RESOURCE_SHORTAGE;
427                         ahd_unlock();
428                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
429                         xpt_done(ccb);
430                         return;
431                 }
432                 ahd_unlock();
433                 
434                 hscb = scb->hscb;
435                 
436                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
437                           ("start scb(%p)\n", scb));
438                 scb->io_ctx = ccb;
439                 /*
440                  * So we can find the SCB when an abort is requested
441                  */
442                 ccb->ccb_h.ccb_scb_ptr = scb;
443
444                 /*
445                  * Put all the arguments for the xfer in the scb
446                  */
447                 hscb->control = 0;
448                 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id);
449                 hscb->lun = ccb->ccb_h.target_lun;
450                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
451                         hscb->cdb_len = 0;
452                         scb->flags |= SCB_DEVICE_RESET;
453                         hscb->control |= MK_MESSAGE;
454                         hscb->task_management = SIU_TASKMGMT_LUN_RESET;
455                         ahd_execute_scb(scb, NULL, 0, 0);
456                 } else {
457 #ifdef AHD_TARGET_MODE
458                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
459                                 struct target_data *tdata;
460
461                                 tdata = &hscb->shared_data.tdata;
462                                 if (ahd->pending_device == lstate)
463                                         scb->flags |= SCB_TARGET_IMMEDIATE;
464                                 hscb->control |= TARGET_SCB;
465                                 tdata->target_phases = 0;
466                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
467                                         tdata->target_phases |= SPHASE_PENDING;
468                                         tdata->scsi_status =
469                                             ccb->csio.scsi_status;
470                                 }
471                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
472                                         tdata->target_phases |= NO_DISCONNECT;
473
474                                 tdata->initiator_tag =
475                                     ahd_htole16(ccb->csio.tag_id);
476                         }
477 #endif
478                         hscb->task_management = 0;
479                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
480                                 hscb->control |= ccb->csio.tag_action;
481                         
482                         ahd_setup_data(ahd, sim, &ccb->csio, scb);
483                 }
484                 break;
485         }
486 #ifdef AHD_TARGET_MODE
487         case XPT_NOTIFY_ACK:
488         case XPT_IMMED_NOTIFY:
489         {
490                 struct     ahd_tmode_tstate *tstate;
491                 struct     ahd_tmode_lstate *lstate;
492                 cam_status status;
493
494                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
495                                              &lstate, TRUE);
496
497                 if (status != CAM_REQ_CMP) {
498                         ccb->ccb_h.status = status;
499                         xpt_done(ccb);
500                         break;
501                 }
502                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
503                                   sim_links.sle);
504                 ccb->ccb_h.status = CAM_REQ_INPROG;
505                 ahd_send_lstate_events(ahd, lstate);
506                 break;
507         }
508         case XPT_EN_LUN:                /* Enable LUN as a target */
509                 ahd_handle_en_lun(ahd, sim, ccb);
510                 xpt_done(ccb);
511                 break;
512 #endif
513         case XPT_ABORT:                 /* Abort the specified CCB */
514         {
515                 ahd_abort_ccb(ahd, sim, ccb);
516                 break;
517         }
518         case XPT_SET_TRAN_SETTINGS:
519         {
520                 ahd_lock();
521                 ahd_set_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
522                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
523                 ahd_unlock();
524                 xpt_done(ccb);
525                 break;
526         }
527         case XPT_GET_TRAN_SETTINGS:
528         /* Get default/user set transfer settings for the target */
529         {
530                 ahd_lock();
531                 ahd_get_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
532                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
533                 ahd_unlock();
534                 xpt_done(ccb);
535                 break;
536         }
537         case XPT_CALC_GEOMETRY:
538         {
539                 cam_calc_geometry(&ccb->ccg, ahd->flags & AHD_EXTENDED_TRANS_A);
540                 xpt_done(ccb);
541                 break;
542         }
543         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
544         {
545                 int  found;
546                 
547                 ahd_lock();
548                 found = ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
549                                           /*initiate reset*/TRUE);
550                 ahd_unlock();
551                 if (bootverbose) {
552                         xpt_print_path(SIM_PATH(ahd, sim));
553                         kprintf("SCSI bus reset delivered. "
554                                "%d SCBs aborted.\n", found);
555                 }
556                 ccb->ccb_h.status = CAM_REQ_CMP;
557                 xpt_done(ccb);
558                 break;
559         }
560         case XPT_TERM_IO:               /* Terminate the I/O process */
561                 /* XXX Implement */
562                 ccb->ccb_h.status = CAM_REQ_INVALID;
563                 xpt_done(ccb);
564                 break;
565         case XPT_PATH_INQ:              /* Path routing inquiry */
566         {
567                 struct ccb_pathinq *cpi = &ccb->cpi;
568                 
569                 cpi->version_num = 1; /* XXX??? */
570                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
571                 if ((ahd->features & AHD_WIDE) != 0)
572                         cpi->hba_inquiry |= PI_WIDE_16;
573                 if ((ahd->features & AHD_TARGETMODE) != 0) {
574                         cpi->target_sprt = PIT_PROCESSOR
575                                          | PIT_DISCONNECT
576                                          | PIT_TERM_IO;
577                 } else {
578                         cpi->target_sprt = 0;
579                 }
580                 cpi->hba_misc = 0;
581                 cpi->hba_eng_cnt = 0;
582                 cpi->max_target = (ahd->features & AHD_WIDE) ? 15 : 7;
583                 cpi->max_lun = AHD_NUM_LUNS_NONPKT - 1;
584                 cpi->initiator_id = ahd->our_id;
585                 if ((ahd->flags & AHD_RESET_BUS_A) == 0) {
586                         cpi->hba_misc |= PIM_NOBUSRESET;
587                 }
588                 cpi->bus_id = cam_sim_bus(sim);
589                 cpi->base_transfer_speed = 3300;
590                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
591                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
592                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
593                 cpi->unit_number = cam_sim_unit(sim);
594 #ifdef AHD_NEW_TRAN_SETTINGS
595                 cpi->protocol = PROTO_SCSI;
596                 cpi->protocol_version = SCSI_REV_2;
597                 cpi->transport = XPORT_SPI;
598                 cpi->transport_version = 2;
599                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
600                 cpi->transport_version = 4;
601                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST;
602 #endif
603                 cpi->ccb_h.status = CAM_REQ_CMP;
604                 xpt_done(ccb);
605                 break;
606         }
607         default:
608                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
609                 xpt_done(ccb);
610                 break;
611         }
612 }
613
614
615 static void
616 ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
617                       struct ccb_trans_settings *cts)
618 {
619 #ifdef AHD_NEW_TRAN_SETTINGS
620         struct    ahd_devinfo devinfo;
621         struct    ccb_trans_settings_scsi *scsi;
622         struct    ccb_trans_settings_spi *spi;
623         struct    ahd_initiator_tinfo *tinfo;
624         struct    ahd_tmode_tstate *tstate;
625         uint16_t *discenable;
626         uint16_t *tagenable;
627         u_int     update_type;
628
629         scsi = &cts->proto_specific.scsi;
630         spi = &cts->xport_specific.spi;
631         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
632                             cts->ccb_h.target_id,
633                             cts->ccb_h.target_lun,
634                             SIM_CHANNEL(ahd, sim),
635                             ROLE_UNKNOWN);
636         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
637                                     devinfo.our_scsiid,
638                                     devinfo.target, &tstate);
639         update_type = 0;
640         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
641                 update_type |= AHD_TRANS_GOAL;
642                 discenable = &tstate->discenable;
643                 tagenable = &tstate->tagenable;
644                 tinfo->curr.protocol_version = cts->protocol_version;
645                 tinfo->curr.transport_version = cts->transport_version;
646                 tinfo->goal.protocol_version = cts->protocol_version;
647                 tinfo->goal.transport_version = cts->transport_version;
648         } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
649                 update_type |= AHD_TRANS_USER;
650                 discenable = &ahd->user_discenable;
651                 tagenable = &ahd->user_tagenable;
652                 tinfo->user.protocol_version = cts->protocol_version;
653                 tinfo->user.transport_version = cts->transport_version;
654         } else {
655                 cts->ccb_h.status = CAM_REQ_INVALID;
656                 return;
657         }
658         
659         if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
660                 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
661                         *discenable |= devinfo.target_mask;
662                 else
663                         *discenable &= ~devinfo.target_mask;
664         }
665         
666         if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
667                 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
668                         *tagenable |= devinfo.target_mask;
669                 else
670                         *tagenable &= ~devinfo.target_mask;
671         }       
672
673         if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
674                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
675                                    &spi->bus_width, ROLE_UNKNOWN);
676                 ahd_set_width(ahd, &devinfo, spi->bus_width,
677                               update_type, /*paused*/FALSE);
678         }
679
680         if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
681                 if (update_type == AHD_TRANS_USER)
682                         spi->ppr_options = tinfo->user.ppr_options;
683                 else
684                         spi->ppr_options = tinfo->goal.ppr_options;
685         }
686
687         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
688                 if (update_type == AHD_TRANS_USER)
689                         spi->sync_offset = tinfo->user.offset;
690                 else
691                         spi->sync_offset = tinfo->goal.offset;
692         }
693
694         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
695                 if (update_type == AHD_TRANS_USER)
696                         spi->sync_period = tinfo->user.period;
697                 else
698                         spi->sync_period = tinfo->goal.period;
699         }
700
701         if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
702          || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
703                 u_int   maxsync;
704
705                 maxsync = AHD_SYNCRATE_MAX;
706
707                 if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
708                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
709
710                 if ((*discenable & devinfo.target_mask) == 0)
711                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
712
713                 ahd_find_syncrate(ahd, &spi->sync_period,
714                                   &spi->ppr_options, maxsync);
715                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
716                                     spi->sync_period, &spi->sync_offset,
717                                     spi->bus_width, ROLE_UNKNOWN);
718
719                 /* We use a period of 0 to represent async */
720                 if (spi->sync_offset == 0) {
721                         spi->sync_period = 0;
722                         spi->ppr_options = 0;
723                 }
724
725                 ahd_set_syncrate(ahd, &devinfo, spi->sync_period,
726                                  spi->sync_offset, spi->ppr_options,
727                                  update_type, /*paused*/FALSE);
728         }
729         cts->ccb_h.status = CAM_REQ_CMP;
730 #else
731         struct    ahd_devinfo devinfo;
732         struct    ahd_initiator_tinfo *tinfo;
733         struct    ahd_tmode_tstate *tstate;
734         uint16_t *discenable;
735         uint16_t *tagenable;
736         u_int     update_type;
737
738         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
739                             cts->ccb_h.target_id,
740                             cts->ccb_h.target_lun,
741                             SIM_CHANNEL(ahd, sim),
742                             ROLE_UNKNOWN);
743         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
744                                     devinfo.our_scsiid,
745                                     devinfo.target, &tstate);
746         update_type = 0;
747         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) {
748                 update_type |= AHD_TRANS_GOAL;
749                 discenable = &tstate->discenable;
750                 tagenable = &tstate->tagenable;
751         } else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
752                 update_type |= AHD_TRANS_USER;
753                 discenable = &ahd->user_discenable;
754                 tagenable = &ahd->user_tagenable;
755         } else {
756                 cts->ccb_h.status = CAM_REQ_INVALID;
757                 return;
758         }
759         
760         if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
761                 if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
762                         *discenable |= devinfo.target_mask;
763                 else
764                         *discenable &= ~devinfo.target_mask;
765         }
766         
767         if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
768                 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
769                         *tagenable |= devinfo.target_mask;
770                 else
771                         *tagenable &= ~devinfo.target_mask;
772         }       
773
774         if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
775                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
776                                    &cts->bus_width, ROLE_UNKNOWN);
777                 ahd_set_width(ahd, &devinfo, cts->bus_width,
778                               update_type, /*paused*/FALSE);
779         }
780
781         if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) {
782                 if (update_type == AHD_TRANS_USER)
783                         cts->sync_offset = tinfo->user.offset;
784                 else
785                         cts->sync_offset = tinfo->goal.offset;
786         }
787
788         if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) {
789                 if (update_type == AHD_TRANS_USER)
790                         cts->sync_period = tinfo->user.period;
791                 else
792                         cts->sync_period = tinfo->goal.period;
793         }
794
795         if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
796          || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)
797          || ((cts->valid & CCB_TRANS_TQ_VALID) != 0)
798          || ((cts->valid & CCB_TRANS_DISC_VALID) != 0)) {
799                 u_int ppr_options;
800                 u_int maxsync;
801
802                 maxsync = AHD_SYNCRATE_MAX;
803                 ppr_options = 0;
804                 if (cts->sync_period <= AHD_SYNCRATE_DT
805                  && cts->bus_width == MSG_EXT_WDTR_BUS_16_BIT) {
806                         ppr_options = tinfo->user.ppr_options
807                                     | MSG_EXT_PPR_DT_REQ;
808                 }
809
810                 if ((*tagenable & devinfo.target_mask) == 0
811                  || (*discenable & devinfo.target_mask) == 0)
812                         ppr_options &= ~MSG_EXT_PPR_IU_REQ;
813
814                 ahd_find_syncrate(ahd, &cts->sync_period,
815                                   &ppr_options, maxsync);
816                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
817                                     cts->sync_period, &cts->sync_offset,
818                                     MSG_EXT_WDTR_BUS_8_BIT,
819                                     ROLE_UNKNOWN);
820
821                 /* We use a period of 0 to represent async */
822                 if (cts->sync_offset == 0) {
823                         cts->sync_period = 0;
824                         ppr_options = 0;
825                 }
826
827                 if (ppr_options != 0
828                  && tinfo->user.transport_version >= 3) {
829                         tinfo->goal.transport_version =
830                             tinfo->user.transport_version;
831                         tinfo->curr.transport_version =
832                             tinfo->user.transport_version;
833                 }
834                 
835                 ahd_set_syncrate(ahd, &devinfo, cts->sync_period,
836                                  cts->sync_offset, ppr_options,
837                                  update_type, /*paused*/FALSE);
838         }
839         cts->ccb_h.status = CAM_REQ_CMP;
840 #endif
841 }
842
843 static void
844 ahd_get_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
845                       struct ccb_trans_settings *cts)
846 {
847 #ifdef AHD_NEW_TRAN_SETTINGS
848         struct  ahd_devinfo devinfo;
849         struct  ccb_trans_settings_scsi *scsi;
850         struct  ccb_trans_settings_spi *spi;
851         struct  ahd_initiator_tinfo *targ_info;
852         struct  ahd_tmode_tstate *tstate;
853         struct  ahd_transinfo *tinfo;
854
855         scsi = &cts->proto_specific.scsi;
856         spi = &cts->xport_specific.spi;
857         ahd_compile_devinfo(&devinfo, our_id,
858                             cts->ccb_h.target_id,
859                             cts->ccb_h.target_lun,
860                             channel, ROLE_UNKNOWN);
861         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
862                                         devinfo.our_scsiid,
863                                         devinfo.target, &tstate);
864         
865         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
866                 tinfo = &targ_info->curr;
867         else
868                 tinfo = &targ_info->user;
869         
870         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
871         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
872         if (cts->type == CTS_TYPE_USER_SETTINGS) {
873                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
874                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
875
876                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
877                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
878         } else {
879                 if ((tstate->discenable & devinfo.target_mask) != 0)
880                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
881
882                 if ((tstate->tagenable & devinfo.target_mask) != 0)
883                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
884         }
885         cts->protocol_version = tinfo->protocol_version;
886         cts->transport_version = tinfo->transport_version;
887
888         spi->sync_period = tinfo->period;
889         spi->sync_offset = tinfo->offset;
890         spi->bus_width = tinfo->width;
891         spi->ppr_options = tinfo->ppr_options;
892         
893         cts->protocol = PROTO_SCSI;
894         cts->transport = XPORT_SPI;
895         spi->valid = CTS_SPI_VALID_SYNC_RATE
896                    | CTS_SPI_VALID_SYNC_OFFSET
897                    | CTS_SPI_VALID_BUS_WIDTH
898                    | CTS_SPI_VALID_PPR_OPTIONS;
899
900         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
901                 scsi->valid = CTS_SCSI_VALID_TQ;
902                 spi->valid |= CTS_SPI_VALID_DISC;
903         } else {
904                 scsi->valid = 0;
905         }
906
907         cts->ccb_h.status = CAM_REQ_CMP;
908 #else
909         struct  ahd_devinfo devinfo;
910         struct  ahd_initiator_tinfo *targ_info;
911         struct  ahd_tmode_tstate *tstate;
912         struct  ahd_transinfo *tinfo;
913
914         ahd_compile_devinfo(&devinfo, our_id,
915                             cts->ccb_h.target_id,
916                             cts->ccb_h.target_lun,
917                             channel, ROLE_UNKNOWN);
918         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
919                                         devinfo.our_scsiid,
920                                         devinfo.target, &tstate);
921         
922         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
923                 tinfo = &targ_info->curr;
924         else
925                 tinfo = &targ_info->user;
926         
927         cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
928         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) == 0) {
929                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
930                         cts->flags |= CCB_TRANS_DISC_ENB;
931
932                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
933                         cts->flags |= CCB_TRANS_TAG_ENB;
934         } else {
935                 if ((tstate->discenable & devinfo.target_mask) != 0)
936                         cts->flags |= CCB_TRANS_DISC_ENB;
937
938                 if ((tstate->tagenable & devinfo.target_mask) != 0)
939                         cts->flags |= CCB_TRANS_TAG_ENB;
940         }
941         cts->sync_period = tinfo->period;
942         cts->sync_offset = tinfo->offset;
943         cts->bus_width = tinfo->width;
944         
945         cts->valid = CCB_TRANS_SYNC_RATE_VALID
946                    | CCB_TRANS_SYNC_OFFSET_VALID
947                    | CCB_TRANS_BUS_WIDTH_VALID;
948
949         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD)
950                 cts->valid |= CCB_TRANS_DISC_VALID|CCB_TRANS_TQ_VALID;
951
952         cts->ccb_h.status = CAM_REQ_CMP;
953 #endif
954 }
955
956 static void
957 ahd_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
958 {
959         struct ahd_softc *ahd;
960         struct cam_sim *sim;
961
962         sim = (struct cam_sim *)callback_arg;
963         ahd = (struct ahd_softc *)cam_sim_softc(sim);
964         switch (code) {
965         case AC_LOST_DEVICE:
966         {
967                 struct  ahd_devinfo devinfo;
968
969                 ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
970                                     xpt_path_target_id(path),
971                                     xpt_path_lun_id(path),
972                                     SIM_CHANNEL(ahd, sim),
973                                     ROLE_UNKNOWN);
974
975                 /*
976                  * Revert to async/narrow transfers
977                  * for the next device.
978                  */
979                 ahd_lock();
980                 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
981                               AHD_TRANS_GOAL|AHD_TRANS_CUR, /*paused*/FALSE);
982                 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
983                                  /*ppr_options*/0, AHD_TRANS_GOAL|AHD_TRANS_CUR,
984                                  /*paused*/FALSE);
985                 ahd_unlock();
986                 break;
987         }
988         default:
989                 break;
990         }
991 }
992
993 static void
994 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
995                 int error)
996 {
997         struct  scb *scb;
998         union   ccb *ccb;
999         struct  ahd_softc *ahd;
1000         struct  ahd_initiator_tinfo *tinfo;
1001         struct  ahd_tmode_tstate *tstate;
1002         u_int   mask;
1003
1004         scb = (struct scb *)arg;
1005         ccb = scb->io_ctx;
1006         ahd = scb->ahd_softc;
1007
1008         if (error != 0) {
1009                 if (error == EFBIG)
1010                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
1011                 else
1012                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
1013                 if (nsegments != 0)
1014                         bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
1015                 ahd_lock();
1016                 ahd_free_scb(ahd, scb);
1017                 ahd_unlock();
1018                 xpt_done(ccb);
1019                 return;
1020         }
1021         scb->sg_count = 0;
1022         if (nsegments != 0) {
1023                 void *sg;
1024                 bus_dmasync_op_t op;
1025                 u_int i;
1026
1027                 /* Copy the segments into our SG list */
1028                 for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
1029
1030                         sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
1031                                           dm_segs->ds_len,
1032                                           /*last*/i == 1);
1033                         dm_segs++;
1034                 }
1035                 
1036                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1037                         op = BUS_DMASYNC_PREREAD;
1038                 else
1039                         op = BUS_DMASYNC_PREWRITE;
1040
1041                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
1042
1043                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
1044                         struct target_data *tdata;
1045
1046                         tdata = &scb->hscb->shared_data.tdata;
1047                         tdata->target_phases |= DPHASE_PENDING;
1048                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
1049                                 tdata->data_phase = P_DATAOUT;
1050                         else
1051                                 tdata->data_phase = P_DATAIN;
1052                 }
1053         }
1054
1055         ahd_lock();
1056
1057         /*
1058          * Last time we need to check if this SCB needs to
1059          * be aborted.
1060          */
1061         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
1062                 if (nsegments != 0)
1063                         bus_dmamap_unload(ahd->buffer_dmat,
1064                                           scb->dmamap);
1065                 ahd_free_scb(ahd, scb);
1066                 ahd_unlock();
1067                 xpt_done(ccb);
1068                 return;
1069         }
1070
1071         tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
1072                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1073                                     SCSIID_TARGET(ahd, scb->hscb->scsiid),
1074                                     &tstate);
1075
1076         mask = SCB_GET_TARGET_MASK(ahd, scb);
1077
1078         if ((tstate->discenable & mask) != 0
1079          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1080                 scb->hscb->control |= DISCENB;
1081
1082         if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1083                 scb->flags |= SCB_PACKETIZED;
1084                 if (scb->hscb->task_management != 0)
1085                         scb->hscb->control &= ~MK_MESSAGE;
1086         }
1087
1088         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1089          && (tinfo->goal.width != 0
1090           || tinfo->goal.period != 0
1091           || tinfo->goal.ppr_options != 0)) {
1092                 scb->flags |= SCB_NEGOTIATE;
1093                 scb->hscb->control |= MK_MESSAGE;
1094         } else if ((tstate->auto_negotiate & mask) != 0) {
1095                 scb->flags |= SCB_AUTO_NEGOTIATE;
1096                 scb->hscb->control |= MK_MESSAGE;
1097         }
1098
1099         LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1100
1101         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1102
1103         aic_scb_timer_start(scb);
1104
1105         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1106                 /* Define a mapping from our tag to the SCB. */
1107                 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
1108                 ahd_pause(ahd);
1109                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1110                 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
1111                 ahd_unpause(ahd);
1112         } else {
1113                 ahd_queue_scb(ahd, scb);
1114         }
1115
1116         ahd_unlock();
1117 }
1118
1119 static void
1120 ahd_poll(struct cam_sim *sim)
1121 {
1122         ahd_intr(cam_sim_softc(sim));
1123 }
1124
1125 static void
1126 ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
1127                struct ccb_scsiio *csio, struct scb *scb)
1128 {
1129         struct hardware_scb *hscb;
1130         struct ccb_hdr *ccb_h;
1131         
1132         hscb = scb->hscb;
1133         ccb_h = &csio->ccb_h;
1134         
1135         csio->resid = 0;
1136         csio->sense_resid = 0;
1137         if (ccb_h->func_code == XPT_SCSI_IO) {
1138                 hscb->cdb_len = csio->cdb_len;
1139                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1140
1141                         if (hscb->cdb_len > MAX_CDB_LEN
1142                          && (ccb_h->flags & CAM_CDB_PHYS) == 0) {
1143                                 /*
1144                                  * Should CAM start to support CDB sizes
1145                                  * greater than 16 bytes, we could use
1146                                  * the sense buffer to store the CDB.
1147                                  */
1148                                 aic_set_transaction_status(scb,
1149                                                            CAM_REQ_INVALID);
1150                                 ahd_lock();
1151                                 ahd_free_scb(ahd, scb);
1152                                 ahd_unlock();
1153                                 xpt_done((union ccb *)csio);
1154                                 return;
1155                         }
1156                         if ((ccb_h->flags & CAM_CDB_PHYS) != 0) {
1157                                 hscb->shared_data.idata.cdb_from_host.cdbptr =
1158                                    aic_htole64((uintptr_t)csio->cdb_io.cdb_ptr);
1159                                 hscb->shared_data.idata.cdb_from_host.cdblen =
1160                                    csio->cdb_len;
1161                                 hscb->cdb_len |= SCB_CDB_LEN_PTR;
1162                         } else {
1163                                 memcpy(hscb->shared_data.idata.cdb, 
1164                                        csio->cdb_io.cdb_ptr,
1165                                        hscb->cdb_len);
1166                         }
1167                 } else {
1168                         if (hscb->cdb_len > MAX_CDB_LEN) {
1169                                 aic_set_transaction_status(scb,
1170                                                            CAM_REQ_INVALID);
1171                                 ahd_lock();
1172                                 ahd_free_scb(ahd, scb);
1173                                 ahd_unlock();
1174                                 xpt_done((union ccb *)csio);
1175                                 return;
1176                         }
1177                         memcpy(hscb->shared_data.idata.cdb,
1178                                csio->cdb_io.cdb_bytes, hscb->cdb_len);
1179                 }
1180         }
1181                 
1182         /* Only use S/G if there is a transfer */
1183         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1184                 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
1185                         /* We've been given a pointer to a single buffer */
1186                         if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
1187                                 int error;
1188
1189                                 crit_enter();
1190                                 error = bus_dmamap_load(ahd->buffer_dmat,
1191                                                         scb->dmamap,
1192                                                         csio->data_ptr,
1193                                                         csio->dxfer_len,
1194                                                         ahd_execute_scb,
1195                                                         scb, /*flags*/0);
1196                                 if (error == EINPROGRESS) {
1197                                         /*
1198                                          * So as to maintain ordering,
1199                                          * freeze the controller queue
1200                                          * until our mapping is
1201                                          * returned.
1202                                          */
1203                                         xpt_freeze_simq(sim,
1204                                                         /*count*/1);
1205                                         scb->io_ctx->ccb_h.status |=
1206                                             CAM_RELEASE_SIMQ;
1207                                 }
1208                                 crit_exit();
1209                         } else {
1210                                 struct bus_dma_segment seg;
1211
1212                                 /* Pointer to physical buffer */
1213                                 if (csio->dxfer_len > AHD_MAXTRANSFER_SIZE)
1214                                         panic("ahd_setup_data - Transfer size "
1215                                               "larger than can device max");
1216
1217                                 seg.ds_addr =
1218                                     (bus_addr_t)(vm_offset_t)csio->data_ptr;
1219                                 seg.ds_len = csio->dxfer_len;
1220                                 ahd_execute_scb(scb, &seg, 1, 0);
1221                         }
1222                 } else {
1223                         struct bus_dma_segment *segs;
1224
1225                         if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
1226                                 panic("ahd_setup_data - Physical segment "
1227                                       "pointers unsupported");
1228
1229                         if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
1230                                 panic("ahd_setup_data - Virtual segment "
1231                                       "addresses unsupported");
1232
1233                         /* Just use the segments provided */
1234                         segs = (struct bus_dma_segment *)csio->data_ptr;
1235                         ahd_execute_scb(scb, segs, csio->sglist_cnt, 0);
1236                 }
1237         } else {
1238                 ahd_execute_scb(scb, NULL, 0, 0);
1239         }
1240 }
1241
1242 static void
1243 ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
1244 {
1245         union ccb *abort_ccb;
1246
1247         abort_ccb = ccb->cab.abort_ccb;
1248         switch (abort_ccb->ccb_h.func_code) {
1249 #ifdef AHD_TARGET_MODE
1250         case XPT_ACCEPT_TARGET_IO:
1251         case XPT_IMMED_NOTIFY:
1252         case XPT_CONT_TARGET_IO:
1253         {
1254                 struct ahd_tmode_tstate *tstate;
1255                 struct ahd_tmode_lstate *lstate;
1256                 struct ccb_hdr_slist *list;
1257                 cam_status status;
1258
1259                 status = ahd_find_tmode_devs(ahd, sim, abort_ccb, &tstate,
1260                                              &lstate, TRUE);
1261
1262                 if (status != CAM_REQ_CMP) {
1263                         ccb->ccb_h.status = status;
1264                         break;
1265                 }
1266
1267                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1268                         list = &lstate->accept_tios;
1269                 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
1270                         list = &lstate->immed_notifies;
1271                 else
1272                         list = NULL;
1273
1274                 if (list != NULL) {
1275                         struct ccb_hdr *curelm;
1276                         int found;
1277
1278                         curelm = SLIST_FIRST(list);
1279                         found = 0;
1280                         if (curelm == &abort_ccb->ccb_h) {
1281                                 found = 1;
1282                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1283                         } else {
1284                                 while(curelm != NULL) {
1285                                         struct ccb_hdr *nextelm;
1286
1287                                         nextelm =
1288                                             SLIST_NEXT(curelm, sim_links.sle);
1289
1290                                         if (nextelm == &abort_ccb->ccb_h) {
1291                                                 found = 1;
1292                                                 SLIST_NEXT(curelm,
1293                                                            sim_links.sle) =
1294                                                     SLIST_NEXT(nextelm,
1295                                                                sim_links.sle);
1296                                                 break;
1297                                         }
1298                                         curelm = nextelm;
1299                                 }
1300                         }
1301
1302                         if (found) {
1303                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1304                                 xpt_done(abort_ccb);
1305                                 ccb->ccb_h.status = CAM_REQ_CMP;
1306                         } else {
1307                                 xpt_print_path(abort_ccb->ccb_h.path);
1308                                 kprintf("Not found\n");
1309                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1310                         }
1311                         break;
1312                 }
1313                 /* FALLTHROUGH */
1314         }
1315 #endif
1316         case XPT_SCSI_IO:
1317                 /* XXX Fully implement the hard ones */
1318                 ccb->ccb_h.status = CAM_UA_ABORT;
1319                 break;
1320         default:
1321                 ccb->ccb_h.status = CAM_REQ_INVALID;
1322                 break;
1323         }
1324         xpt_done(ccb);
1325 }
1326
1327 void
1328 ahd_send_async(struct ahd_softc *ahd, char channel, u_int target,
1329                 u_int lun, ac_code code, void *opt_arg)
1330 {
1331         struct  ccb_trans_settings cts;
1332         struct cam_path *path;
1333         void *arg;
1334         int error;
1335
1336         arg = NULL;
1337         error = ahd_create_path(ahd, channel, target, lun, &path);
1338
1339         if (error != CAM_REQ_CMP)
1340                 return;
1341
1342         switch (code) {
1343         case AC_TRANSFER_NEG:
1344         {
1345 #ifdef AHD_NEW_TRAN_SETTINGS
1346                 struct  ccb_trans_settings_scsi *scsi;
1347         
1348                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1349                 scsi = &cts.proto_specific.scsi;
1350 #else
1351                 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1352 #endif
1353                 cts.ccb_h.path = path;
1354                 cts.ccb_h.target_id = target;
1355                 cts.ccb_h.target_lun = lun;
1356                 ahd_get_tran_settings(ahd, ahd->our_id, channel, &cts);
1357                 arg = &cts;
1358 #ifdef AHD_NEW_TRAN_SETTINGS
1359                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1360                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1361 #else
1362                 cts.valid &= ~CCB_TRANS_TQ_VALID;
1363                 cts.flags &= ~CCB_TRANS_TAG_ENB;
1364 #endif
1365                 if (opt_arg == NULL)
1366                         break;
1367                 if (*((ahd_queue_alg *)opt_arg) == AHD_QUEUE_TAGGED)
1368 #ifdef AHD_NEW_TRAN_SETTINGS
1369                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1370                 scsi->valid |= CTS_SCSI_VALID_TQ;
1371 #else
1372                         cts.flags |= CCB_TRANS_TAG_ENB;
1373                 cts.valid |= CCB_TRANS_TQ_VALID;
1374 #endif
1375                 break;
1376         }
1377         case AC_SENT_BDR:
1378         case AC_BUS_RESET:
1379                 break;
1380         default:
1381                 panic("ahd_send_async: Unexpected async event");
1382         }
1383         xpt_async(code, path, arg);
1384         xpt_free_path(path);
1385 }
1386
1387 void
1388 ahd_platform_set_tags(struct ahd_softc *ahd,
1389                       struct ahd_devinfo *devinfo, int enable)
1390 {
1391 }
1392
1393 int
1394 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1395 {
1396         ahd->platform_data = kmalloc(sizeof(struct ahd_platform_data), M_DEVBUF,
1397                                     M_INTWAIT | M_ZERO);
1398         return (0);
1399 }
1400
1401 void
1402 ahd_platform_free(struct ahd_softc *ahd)
1403 {
1404         struct ahd_platform_data *pdata;
1405
1406         pdata = ahd->platform_data;
1407         if (pdata != NULL) {
1408                 if (pdata->regs[0] != NULL)
1409                         bus_release_resource(ahd->dev_softc,
1410                                              pdata->regs_res_type[0],
1411                                              pdata->regs_res_id[0],
1412                                              pdata->regs[0]);
1413
1414                 if (pdata->regs[1] != NULL)
1415                         bus_release_resource(ahd->dev_softc,
1416                                              pdata->regs_res_type[1],
1417                                              pdata->regs_res_id[1],
1418                                              pdata->regs[1]);
1419
1420                 if (pdata->irq != NULL)
1421                         bus_release_resource(ahd->dev_softc,
1422                                              pdata->irq_res_type,
1423                                              0, pdata->irq);
1424
1425                 if (pdata->sim != NULL) {
1426                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1427                         xpt_free_path(pdata->path);
1428                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1429                         cam_sim_free(pdata->sim);
1430                 }
1431                 if (pdata->eh != NULL)
1432                         EVENTHANDLER_DEREGISTER(shutdown_post_sync, pdata->eh);
1433                 kfree(ahd->platform_data, M_DEVBUF);
1434         }
1435 }
1436
1437 int
1438 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
1439 {
1440         /* We don't sort softcs under FreeBSD so report equal always */
1441         return (0);
1442 }
1443
1444 int
1445 ahd_detach(device_t dev)
1446 {
1447         struct ahd_softc *ahd;
1448
1449         device_printf(dev, "detaching device\n");
1450         ahd = device_get_softc(dev);
1451         ahd = ahd_find_softc(ahd);
1452         if (ahd == NULL) {
1453                 device_printf(dev, "aic7xxx already detached\n");
1454                 return (ENOENT);
1455         }
1456         TAILQ_REMOVE(&ahd_tailq, ahd, links);
1457         ahd_lock();
1458         ahd_intr_enable(ahd, FALSE);
1459         bus_teardown_intr(dev, ahd->platform_data->irq, ahd->platform_data->ih);
1460         ahd_unlock();
1461         ahd_free(ahd);
1462         return (0);
1463 }
1464
1465 #if 0
1466 static void
1467 ahd_dump_targcmd(struct target_cmd *cmd)
1468 {
1469         uint8_t *byte;
1470         uint8_t *last_byte;
1471         int i;
1472
1473         byte = &cmd->initiator_channel;
1474         /* Debugging info for received commands */
1475         last_byte = &cmd[1].initiator_channel;
1476
1477         i = 0;
1478         while (byte < last_byte) {
1479                 if (i == 0)
1480                         kprintf("\t");
1481                 kprintf("%#x", *byte++);
1482                 i++;
1483                 if (i == 8) {
1484                         kprintf("\n");
1485                         i = 0;
1486                 } else {
1487                         kprintf(", ");
1488                 }
1489         }
1490 }
1491 #endif
1492
1493 static int
1494 ahd_modevent(module_t mod, int type, void *data)
1495 {
1496         /* XXX Deal with busy status on unload. */
1497         return 0;
1498 }
1499   
1500 static moduledata_t ahd_mod = {
1501         "ahd",
1502         ahd_modevent,
1503         NULL
1504 };
1505
1506 /********************************** DDB Hooks *********************************/
1507 #ifdef DDB
1508 static struct ahd_softc *ahd_ddb_softc;
1509 static int ahd_ddb_paused;
1510 static int ahd_ddb_paused_on_entry;
1511 DB_COMMAND(ahd_sunit, ahd_ddb_sunit)
1512 {
1513         struct ahd_softc *list_ahd;
1514
1515         ahd_ddb_softc = NULL;
1516         TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
1517                 if (list_ahd->unit == addr)
1518                         ahd_ddb_softc = list_ahd;
1519         }
1520         if (ahd_ddb_softc == NULL)
1521                 db_error("No matching softc found!\n");
1522 }
1523
1524 DB_COMMAND(ahd_pause, ahd_ddb_pause)
1525 {
1526         if (ahd_ddb_softc == NULL) {
1527                 db_error("Must set unit with ahd_sunit first!\n");
1528                 return;
1529         }
1530         if (ahd_ddb_paused == 0) {
1531                 ahd_ddb_paused++;
1532                 if (ahd_is_paused(ahd_ddb_softc)) {
1533                         ahd_ddb_paused_on_entry++;
1534                         return;
1535                 }
1536                 ahd_pause(ahd_ddb_softc);
1537         }
1538 }
1539
1540 DB_COMMAND(ahd_unpause, ahd_ddb_unpause)
1541 {
1542         if (ahd_ddb_softc == NULL) {
1543                 db_error("Must set unit with ahd_sunit first!\n");
1544                 return;
1545         }
1546         if (ahd_ddb_paused != 0) {
1547                 ahd_ddb_paused = 0;
1548                 if (ahd_ddb_paused_on_entry)
1549                         return;
1550                 ahd_unpause(ahd_ddb_softc);
1551         } else if (ahd_ddb_paused_on_entry != 0) {
1552                 /* Two unpauses to clear a paused on entry. */
1553                 ahd_ddb_paused_on_entry = 0;
1554                 ahd_unpause(ahd_ddb_softc);
1555         }
1556 }
1557
1558 DB_COMMAND(ahd_in, ahd_ddb_in)
1559 {
1560         int c;
1561         int size;
1562  
1563         if (ahd_ddb_softc == NULL) {
1564                 db_error("Must set unit with ahd_sunit first!\n");
1565                 return;
1566         }
1567         if (have_addr == 0)
1568                 return;
1569
1570         size = 1;
1571         while ((c = *modif++) != '\0') {
1572                 switch (c) {
1573                 case 'b':
1574                         size = 1;
1575                         break;
1576                 case 'w':
1577                         size = 2;
1578                         break;
1579                 case 'l':
1580                         size = 4;
1581                 break;
1582                 }
1583         }
1584
1585         if (count <= 0)
1586                 count = 1;
1587         while (--count >= 0) {
1588                 db_printf("%04lx (M)%x: \t", (u_long)addr,
1589                           ahd_inb(ahd_ddb_softc, MODE_PTR));
1590                 switch (size) {
1591                 case 1:
1592                         db_printf("%02x\n", ahd_inb(ahd_ddb_softc, addr));
1593                         break;
1594                 case 2:
1595                         db_printf("%04x\n", ahd_inw(ahd_ddb_softc, addr));
1596                         break;
1597                 case 4:
1598                         db_printf("%08x\n", ahd_inl(ahd_ddb_softc, addr));
1599                         break;
1600                 }
1601         }
1602 }
1603
1604 DB_SET(ahd_out, ahd_ddb_out, db_cmd_set, CS_MORE, NULL)
1605 {
1606         db_expr_t old_value;
1607         db_expr_t new_value;
1608         int       size;
1609  
1610         if (ahd_ddb_softc == NULL) {
1611                 db_error("Must set unit with ahd_sunit first!\n");
1612                 return;
1613         }
1614
1615         switch (modif[0]) {
1616         case '\0':
1617         case 'b':
1618                 size = 1;
1619                 break;
1620         case 'h':
1621                 size = 2;
1622                 break;
1623         case 'l':
1624                 size = 4;
1625                 break;
1626         default:
1627                 db_error("Unknown size\n");
1628                 return;
1629         }
1630  
1631         while (db_expression(&new_value)) {
1632                 switch (size) {
1633                 default:
1634                 case 1:
1635                         old_value = ahd_inb(ahd_ddb_softc, addr);
1636                         ahd_outb(ahd_ddb_softc, addr, new_value);
1637                         break;
1638                 case 2:
1639                         old_value = ahd_inw(ahd_ddb_softc, addr);
1640                         ahd_outw(ahd_ddb_softc, addr, new_value);
1641                         break;
1642                 case 4:
1643                         old_value = ahd_inl(ahd_ddb_softc, addr);
1644                         ahd_outl(ahd_ddb_softc, addr, new_value);
1645                         break;
1646                 }
1647                 db_printf("%04lx (M)%x: \t0x%lx\t=\t0x%lx",
1648                           (u_long)addr, ahd_inb(ahd_ddb_softc, MODE_PTR),
1649                           (u_long)old_value, (u_long)new_value);
1650                 addr += size;
1651         }
1652         db_skip_to_eol();
1653 }
1654
1655 DB_COMMAND(ahd_dump, ahd_ddb_dump)
1656 {
1657         if (ahd_ddb_softc == NULL) {
1658                 db_error("Must set unit with ahd_sunit first!\n");
1659                 return;
1660         }
1661         ahd_dump_card_state(ahd_ddb_softc);
1662 }
1663
1664 #endif
1665
1666
1667 DECLARE_MODULE(ahd, ahd_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1668 MODULE_DEPEND(ahd, cam, 1, 1, 1);
1669 MODULE_VERSION(ahd, 1);