MPSAFE locking for the ahc/ahd drivers using lockmgr locks.
[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 1.22 2008/02/09 18:13:13 pavalos 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                                INTR_MPSAFE, 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(ahd);
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         ahd_unlock(ahd);
167         if (count != 0) {
168                 /* We have to wait until after any system dumps... */
169                 ahd->platform_data->eh =
170                     EVENTHANDLER_REGISTER(shutdown_post_sync, ahd_shutdown,
171                                           ahd, SHUTDOWN_PRI_DRIVER);
172                 ahd_intr_enable(ahd, TRUE);
173         }
174
175         return (count);
176 }
177
178 /*
179  * Catch an interrupt from the adapter
180  */
181 void
182 ahd_platform_intr(void *arg)
183 {
184         struct  ahd_softc *ahd;
185
186         ahd = (struct ahd_softc *)arg; 
187         ahd_lock(ahd);
188         ahd_intr(ahd);
189         ahd_unlock(ahd);
190 }
191
192 /*
193  * We have an scb which has been processed by the
194  * adaptor, now we look to see how the operation
195  * went.
196  */
197 void
198 ahd_done(struct ahd_softc *ahd, struct scb *scb)
199 {
200         union ccb *ccb;
201
202         CAM_DEBUG(scb->io_ctx->ccb_h.path, CAM_DEBUG_TRACE,
203                   ("ahd_done - scb %d\n", SCB_GET_TAG(scb)));
204
205         ccb = scb->io_ctx;
206         LIST_REMOVE(scb, pending_links);
207         if ((scb->flags & SCB_TIMEDOUT) != 0)
208                 LIST_REMOVE(scb, timedout_links);
209
210         callout_stop(&scb->io_timer);
211
212         if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
213                 bus_dmasync_op_t op;
214
215                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
216                         op = BUS_DMASYNC_POSTREAD;
217                 else
218                         op = BUS_DMASYNC_POSTWRITE;
219                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
220                 bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
221         }
222
223 #ifdef AHD_TARGET_MODE
224         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
225                 struct cam_path *ccb_path;
226
227                 /*
228                  * If we have finally disconnected, clean up our
229                  * pending device state.
230                  * XXX - There may be error states that cause where
231                  *       we will remain connected.
232                  */
233                 ccb_path = ccb->ccb_h.path;
234                 if (ahd->pending_device != NULL
235                  && xpt_path_comp(ahd->pending_device->path, ccb_path) == 0) {
236
237                         if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
238                                 ahd->pending_device = NULL;
239                         } else {
240                                 xpt_print_path(ccb->ccb_h.path);
241                                 kprintf("Still disconnected\n");
242                                 ahd_freeze_ccb(ccb);
243                         }
244                 }
245
246                 if (aic_get_transaction_status(scb) == CAM_REQ_INPROG)
247                         ccb->ccb_h.status |= CAM_REQ_CMP;
248                 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
249                 ahd_free_scb(ahd, scb);
250                 xpt_done(ccb);
251                 return;
252         }
253 #endif
254
255         if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
256                 struct  scb *list_scb;
257
258                 ahd->scb_data.recovery_scbs--;
259
260                 if (aic_get_transaction_status(scb) == CAM_BDR_SENT
261                  || aic_get_transaction_status(scb) == CAM_REQ_ABORTED)
262                         aic_set_transaction_status(scb, CAM_CMD_TIMEOUT);
263
264                 if (ahd->scb_data.recovery_scbs == 0) {
265                         /*
266                          * All recovery actions have completed successfully,
267                          * so reinstate the timeouts for all other pending
268                          * commands.
269                          */
270                         LIST_FOREACH(list_scb,
271                                      &ahd->pending_scbs, pending_links) {
272
273                                 aic_scb_timer_reset(list_scb,
274                                                     aic_get_timeout(scb));
275                         }
276
277                         ahd_print_path(ahd, scb);
278                         kprintf("no longer in timeout, status = %x\n",
279                                ccb->ccb_h.status);
280                 }
281         }
282
283         /* Don't clobber any existing error state */
284         if (aic_get_transaction_status(scb) == CAM_REQ_INPROG) {
285                 ccb->ccb_h.status |= CAM_REQ_CMP;
286         } else if ((scb->flags & SCB_SENSE) != 0) {
287                 /*
288                  * We performed autosense retrieval.
289                  *
290                  * Zero any sense not transferred by the
291                  * device.  The SCSI spec mandates that any
292                  * untransfered data should be assumed to be
293                  * zero.  Complete the 'bounce' of sense information
294                  * through buffers accessible via bus-space by
295                  * copying it into the clients csio.
296                  */
297                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
298                 memcpy(&ccb->csio.sense_data,
299                        ahd_get_sense_buf(ahd, scb),
300 /* XXX What size do we want to use??? */
301                         sizeof(ccb->csio.sense_data)
302                        - ccb->csio.sense_resid);
303                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
304         } else if ((scb->flags & SCB_PKT_SENSE) != 0) {
305                 struct scsi_status_iu_header *siu;
306                 u_int sense_len;
307                 int i;
308
309                 /*
310                  * Copy only the sense data into the provided buffer.
311                  */
312                 siu = (struct scsi_status_iu_header *)scb->sense_data;
313                 sense_len = MIN(scsi_4btoul(siu->sense_length),
314                                 sizeof(ccb->csio.sense_data));
315                 memset(&ccb->csio.sense_data, 0, sizeof(ccb->csio.sense_data));
316                 memcpy(&ccb->csio.sense_data,
317                        ahd_get_sense_buf(ahd, scb) + SIU_SENSE_OFFSET(siu),
318                        sense_len);
319                 kprintf("Copied %d bytes of sense data offset %d:", sense_len,
320                        SIU_SENSE_OFFSET(siu));
321                 for (i = 0; i < sense_len; i++)
322                         kprintf(" 0x%x", ((uint8_t *)&ccb->csio.sense_data)[i]);
323                 kprintf("\n");
324                 scb->io_ctx->ccb_h.status |= CAM_AUTOSNS_VALID;
325         }
326         ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
327         ahd_free_scb(ahd, scb);
328         xpt_done(ccb);
329 }
330
331 static void
332 ahd_action(struct cam_sim *sim, union ccb *ccb)
333 {
334         struct  ahd_softc *ahd;
335 #ifdef AHD_TARGET_MODE
336         struct  ahd_tmode_lstate *lstate;
337 #endif
338         u_int   target_id;
339         u_int   our_id;
340
341         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahd_action\n"));
342         
343         ahd = (struct ahd_softc *)cam_sim_softc(sim);
344
345         target_id = ccb->ccb_h.target_id;
346         our_id = SIM_SCSI_ID(ahd, sim);
347         
348         switch (ccb->ccb_h.func_code) {
349         /* Common cases first */
350 #ifdef AHD_TARGET_MODE
351         case XPT_ACCEPT_TARGET_IO:      /* Accept Host Target Mode CDB */
352         case XPT_CONT_TARGET_IO:/* Continue Host Target I/O Connection*/
353         {
354                 struct     ahd_tmode_tstate *tstate;
355                 cam_status status;
356
357                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
358                                              &lstate, TRUE);
359
360                 if (status != CAM_REQ_CMP) {
361                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
362                                 /* Response from the black hole device */
363                                 tstate = NULL;
364                                 lstate = ahd->black_hole;
365                         } else {
366                                 ccb->ccb_h.status = status;
367                                 xpt_done(ccb);
368                                 break;
369                         }
370                 }
371                 if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
372
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                         break;
379                 }
380
381                 /*
382                  * The target_id represents the target we attempt to
383                  * select.  In target mode, this is the initiator of
384                  * the original command.
385                  */
386                 our_id = target_id;
387                 target_id = ccb->csio.init_id;
388                 /* FALLTHROUGH */
389         }
390 #endif
391         case XPT_SCSI_IO:       /* Execute the requested I/O operation */
392         case XPT_RESET_DEV:     /* Bus Device Reset the specified SCSI device */
393         {
394                 struct  scb *scb;
395                 struct  hardware_scb *hscb;     
396                 struct  ahd_initiator_tinfo *tinfo;
397                 struct  ahd_tmode_tstate *tstate;
398                 u_int   col_idx;
399
400                 if ((ahd->flags & AHD_INITIATORROLE) == 0
401                  && (ccb->ccb_h.func_code == XPT_SCSI_IO
402                   || ccb->ccb_h.func_code == XPT_RESET_DEV)) {
403                         ccb->ccb_h.status = CAM_PROVIDE_FAIL;
404                         xpt_done(ccb);
405                         return;
406                 }
407
408                 /*
409                  * get an scb to use.
410                  */
411                 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id,
412                                             target_id, &tstate);
413                 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) == 0
414                  || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0
415                  || ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
416                         col_idx = AHD_NEVER_COL_IDX;
417                 } else {
418                         col_idx = AHD_BUILD_COL_IDX(target_id,
419                                                     ccb->ccb_h.target_lun);
420                 }
421                 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
422         
423                         xpt_freeze_simq(sim, /*count*/1);
424                         ahd->flags |= AHD_RESOURCE_SHORTAGE;
425                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
426                         xpt_done(ccb);
427                         return;
428                 }
429                 
430                 hscb = scb->hscb;
431                 
432                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
433                           ("start scb(%p)\n", scb));
434                 scb->io_ctx = ccb;
435                 /*
436                  * So we can find the SCB when an abort is requested
437                  */
438                 ccb->ccb_h.ccb_scb_ptr = scb;
439
440                 /*
441                  * Put all the arguments for the xfer in the scb
442                  */
443                 hscb->control = 0;
444                 hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id);
445                 hscb->lun = ccb->ccb_h.target_lun;
446                 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
447                         hscb->cdb_len = 0;
448                         scb->flags |= SCB_DEVICE_RESET;
449                         hscb->control |= MK_MESSAGE;
450                         hscb->task_management = SIU_TASKMGMT_LUN_RESET;
451                         ahd_execute_scb(scb, NULL, 0, 0);
452                 } else {
453 #ifdef AHD_TARGET_MODE
454                         if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
455                                 struct target_data *tdata;
456
457                                 tdata = &hscb->shared_data.tdata;
458                                 if (ahd->pending_device == lstate)
459                                         scb->flags |= SCB_TARGET_IMMEDIATE;
460                                 hscb->control |= TARGET_SCB;
461                                 tdata->target_phases = 0;
462                                 if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
463                                         tdata->target_phases |= SPHASE_PENDING;
464                                         tdata->scsi_status =
465                                             ccb->csio.scsi_status;
466                                 }
467                                 if (ccb->ccb_h.flags & CAM_DIS_DISCONNECT)
468                                         tdata->target_phases |= NO_DISCONNECT;
469
470                                 tdata->initiator_tag =
471                                     ahd_htole16(ccb->csio.tag_id);
472                         }
473 #endif
474                         hscb->task_management = 0;
475                         if (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID)
476                                 hscb->control |= ccb->csio.tag_action;
477                         
478                         ahd_setup_data(ahd, sim, &ccb->csio, scb);
479                 }
480                 break;
481         }
482 #ifdef AHD_TARGET_MODE
483         case XPT_NOTIFY_ACK:
484         case XPT_IMMED_NOTIFY:
485         {
486                 struct     ahd_tmode_tstate *tstate;
487                 struct     ahd_tmode_lstate *lstate;
488                 cam_status status;
489
490                 status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate,
491                                              &lstate, TRUE);
492
493                 if (status != CAM_REQ_CMP) {
494                         ccb->ccb_h.status = status;
495                         xpt_done(ccb);
496                         break;
497                 }
498                 SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
499                                   sim_links.sle);
500                 ccb->ccb_h.status = CAM_REQ_INPROG;
501                 ahd_send_lstate_events(ahd, lstate);
502                 break;
503         }
504         case XPT_EN_LUN:                /* Enable LUN as a target */
505                 ahd_handle_en_lun(ahd, sim, ccb);
506                 xpt_done(ccb);
507                 break;
508 #endif
509         case XPT_ABORT:                 /* Abort the specified CCB */
510         {
511                 ahd_abort_ccb(ahd, sim, ccb);
512                 break;
513         }
514         case XPT_SET_TRAN_SETTINGS:
515         {
516                 ahd_set_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
517                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
518                 xpt_done(ccb);
519                 break;
520         }
521         case XPT_GET_TRAN_SETTINGS:
522         /* Get default/user set transfer settings for the target */
523         {
524                 ahd_get_tran_settings(ahd, SIM_SCSI_ID(ahd, sim),
525                                       SIM_CHANNEL(ahd, sim), &ccb->cts);
526                 xpt_done(ccb);
527                 break;
528         }
529         case XPT_CALC_GEOMETRY:
530         {
531                 cam_calc_geometry(&ccb->ccg, ahd->flags & AHD_EXTENDED_TRANS_A);
532                 xpt_done(ccb);
533                 break;
534         }
535         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
536         {
537                 int  found;
538                 
539                 found = ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim),
540                                           /*initiate reset*/TRUE);
541                 if (bootverbose) {
542                         xpt_print_path(SIM_PATH(ahd, sim));
543                         kprintf("SCSI bus reset delivered. "
544                                "%d SCBs aborted.\n", found);
545                 }
546                 ccb->ccb_h.status = CAM_REQ_CMP;
547                 xpt_done(ccb);
548                 break;
549         }
550         case XPT_TERM_IO:               /* Terminate the I/O process */
551                 /* XXX Implement */
552                 ccb->ccb_h.status = CAM_REQ_INVALID;
553                 xpt_done(ccb);
554                 break;
555         case XPT_PATH_INQ:              /* Path routing inquiry */
556         {
557                 struct ccb_pathinq *cpi = &ccb->cpi;
558                 
559                 cpi->version_num = 1; /* XXX??? */
560                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
561                 if ((ahd->features & AHD_WIDE) != 0)
562                         cpi->hba_inquiry |= PI_WIDE_16;
563                 if ((ahd->features & AHD_TARGETMODE) != 0) {
564                         cpi->target_sprt = PIT_PROCESSOR
565                                          | PIT_DISCONNECT
566                                          | PIT_TERM_IO;
567                 } else {
568                         cpi->target_sprt = 0;
569                 }
570                 cpi->hba_misc = 0;
571                 cpi->hba_eng_cnt = 0;
572                 cpi->max_target = (ahd->features & AHD_WIDE) ? 15 : 7;
573                 cpi->max_lun = AHD_NUM_LUNS_NONPKT - 1;
574                 cpi->initiator_id = ahd->our_id;
575                 if ((ahd->flags & AHD_RESET_BUS_A) == 0) {
576                         cpi->hba_misc |= PIM_NOBUSRESET;
577                 }
578                 cpi->bus_id = cam_sim_bus(sim);
579                 cpi->base_transfer_speed = 3300;
580                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
581                 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
582                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
583                 cpi->unit_number = cam_sim_unit(sim);
584 #ifdef AHD_NEW_TRAN_SETTINGS
585                 cpi->protocol = PROTO_SCSI;
586                 cpi->protocol_version = SCSI_REV_2;
587                 cpi->transport = XPORT_SPI;
588                 cpi->transport_version = 2;
589                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_ST;
590                 cpi->transport_version = 4;
591                 cpi->xport_specific.spi.ppr_options = SID_SPI_CLOCK_DT_ST;
592 #endif
593                 cpi->ccb_h.status = CAM_REQ_CMP;
594                 xpt_done(ccb);
595                 break;
596         }
597         default:
598                 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
599                 xpt_done(ccb);
600                 break;
601         }
602 }
603
604
605 static void
606 ahd_set_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
607                       struct ccb_trans_settings *cts)
608 {
609 #ifdef AHD_NEW_TRAN_SETTINGS
610         struct    ahd_devinfo devinfo;
611         struct    ccb_trans_settings_scsi *scsi;
612         struct    ccb_trans_settings_spi *spi;
613         struct    ahd_initiator_tinfo *tinfo;
614         struct    ahd_tmode_tstate *tstate;
615         uint16_t *discenable;
616         uint16_t *tagenable;
617         u_int     update_type;
618
619         scsi = &cts->proto_specific.scsi;
620         spi = &cts->xport_specific.spi;
621         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
622                             cts->ccb_h.target_id,
623                             cts->ccb_h.target_lun,
624                             SIM_CHANNEL(ahd, sim),
625                             ROLE_UNKNOWN);
626         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
627                                     devinfo.our_scsiid,
628                                     devinfo.target, &tstate);
629         update_type = 0;
630         if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
631                 update_type |= AHD_TRANS_GOAL;
632                 discenable = &tstate->discenable;
633                 tagenable = &tstate->tagenable;
634                 tinfo->curr.protocol_version = cts->protocol_version;
635                 tinfo->curr.transport_version = cts->transport_version;
636                 tinfo->goal.protocol_version = cts->protocol_version;
637                 tinfo->goal.transport_version = cts->transport_version;
638         } else if (cts->type == CTS_TYPE_USER_SETTINGS) {
639                 update_type |= AHD_TRANS_USER;
640                 discenable = &ahd->user_discenable;
641                 tagenable = &ahd->user_tagenable;
642                 tinfo->user.protocol_version = cts->protocol_version;
643                 tinfo->user.transport_version = cts->transport_version;
644         } else {
645                 cts->ccb_h.status = CAM_REQ_INVALID;
646                 return;
647         }
648         
649         if ((spi->valid & CTS_SPI_VALID_DISC) != 0) {
650                 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
651                         *discenable |= devinfo.target_mask;
652                 else
653                         *discenable &= ~devinfo.target_mask;
654         }
655         
656         if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
657                 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
658                         *tagenable |= devinfo.target_mask;
659                 else
660                         *tagenable &= ~devinfo.target_mask;
661         }       
662
663         if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) {
664                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
665                                    &spi->bus_width, ROLE_UNKNOWN);
666                 ahd_set_width(ahd, &devinfo, spi->bus_width,
667                               update_type, /*paused*/FALSE);
668         }
669
670         if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) {
671                 if (update_type == AHD_TRANS_USER)
672                         spi->ppr_options = tinfo->user.ppr_options;
673                 else
674                         spi->ppr_options = tinfo->goal.ppr_options;
675         }
676
677         if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) {
678                 if (update_type == AHD_TRANS_USER)
679                         spi->sync_offset = tinfo->user.offset;
680                 else
681                         spi->sync_offset = tinfo->goal.offset;
682         }
683
684         if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) {
685                 if (update_type == AHD_TRANS_USER)
686                         spi->sync_period = tinfo->user.period;
687                 else
688                         spi->sync_period = tinfo->goal.period;
689         }
690
691         if (((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0)
692          || ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0)) {
693                 u_int   maxsync;
694
695                 maxsync = AHD_SYNCRATE_MAX;
696
697                 if (spi->bus_width != MSG_EXT_WDTR_BUS_16_BIT)
698                         spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ;
699
700                 if ((*discenable & devinfo.target_mask) == 0)
701                         spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ;
702
703                 ahd_find_syncrate(ahd, &spi->sync_period,
704                                   &spi->ppr_options, maxsync);
705                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
706                                     spi->sync_period, &spi->sync_offset,
707                                     spi->bus_width, ROLE_UNKNOWN);
708
709                 /* We use a period of 0 to represent async */
710                 if (spi->sync_offset == 0) {
711                         spi->sync_period = 0;
712                         spi->ppr_options = 0;
713                 }
714
715                 ahd_set_syncrate(ahd, &devinfo, spi->sync_period,
716                                  spi->sync_offset, spi->ppr_options,
717                                  update_type, /*paused*/FALSE);
718         }
719         cts->ccb_h.status = CAM_REQ_CMP;
720 #else
721         struct    ahd_devinfo devinfo;
722         struct    ahd_initiator_tinfo *tinfo;
723         struct    ahd_tmode_tstate *tstate;
724         uint16_t *discenable;
725         uint16_t *tagenable;
726         u_int     update_type;
727
728         ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
729                             cts->ccb_h.target_id,
730                             cts->ccb_h.target_lun,
731                             SIM_CHANNEL(ahd, sim),
732                             ROLE_UNKNOWN);
733         tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
734                                     devinfo.our_scsiid,
735                                     devinfo.target, &tstate);
736         update_type = 0;
737         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0) {
738                 update_type |= AHD_TRANS_GOAL;
739                 discenable = &tstate->discenable;
740                 tagenable = &tstate->tagenable;
741         } else if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
742                 update_type |= AHD_TRANS_USER;
743                 discenable = &ahd->user_discenable;
744                 tagenable = &ahd->user_tagenable;
745         } else {
746                 cts->ccb_h.status = CAM_REQ_INVALID;
747                 return;
748         }
749         
750         if ((cts->valid & CCB_TRANS_DISC_VALID) != 0) {
751                 if ((cts->flags & CCB_TRANS_DISC_ENB) != 0)
752                         *discenable |= devinfo.target_mask;
753                 else
754                         *discenable &= ~devinfo.target_mask;
755         }
756         
757         if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) {
758                 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0)
759                         *tagenable |= devinfo.target_mask;
760                 else
761                         *tagenable &= ~devinfo.target_mask;
762         }       
763
764         if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) {
765                 ahd_validate_width(ahd, /*tinfo limit*/NULL,
766                                    &cts->bus_width, ROLE_UNKNOWN);
767                 ahd_set_width(ahd, &devinfo, cts->bus_width,
768                               update_type, /*paused*/FALSE);
769         }
770
771         if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) {
772                 if (update_type == AHD_TRANS_USER)
773                         cts->sync_offset = tinfo->user.offset;
774                 else
775                         cts->sync_offset = tinfo->goal.offset;
776         }
777
778         if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) {
779                 if (update_type == AHD_TRANS_USER)
780                         cts->sync_period = tinfo->user.period;
781                 else
782                         cts->sync_period = tinfo->goal.period;
783         }
784
785         if (((cts->valid & CCB_TRANS_SYNC_RATE_VALID) != 0)
786          || ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0)
787          || ((cts->valid & CCB_TRANS_TQ_VALID) != 0)
788          || ((cts->valid & CCB_TRANS_DISC_VALID) != 0)) {
789                 u_int ppr_options;
790                 u_int maxsync;
791
792                 maxsync = AHD_SYNCRATE_MAX;
793                 ppr_options = 0;
794                 if (cts->sync_period <= AHD_SYNCRATE_DT
795                  && cts->bus_width == MSG_EXT_WDTR_BUS_16_BIT) {
796                         ppr_options = tinfo->user.ppr_options
797                                     | MSG_EXT_PPR_DT_REQ;
798                 }
799
800                 if ((*tagenable & devinfo.target_mask) == 0
801                  || (*discenable & devinfo.target_mask) == 0)
802                         ppr_options &= ~MSG_EXT_PPR_IU_REQ;
803
804                 ahd_find_syncrate(ahd, &cts->sync_period,
805                                   &ppr_options, maxsync);
806                 ahd_validate_offset(ahd, /*tinfo limit*/NULL,
807                                     cts->sync_period, &cts->sync_offset,
808                                     MSG_EXT_WDTR_BUS_8_BIT,
809                                     ROLE_UNKNOWN);
810
811                 /* We use a period of 0 to represent async */
812                 if (cts->sync_offset == 0) {
813                         cts->sync_period = 0;
814                         ppr_options = 0;
815                 }
816
817                 if (ppr_options != 0
818                  && tinfo->user.transport_version >= 3) {
819                         tinfo->goal.transport_version =
820                             tinfo->user.transport_version;
821                         tinfo->curr.transport_version =
822                             tinfo->user.transport_version;
823                 }
824                 
825                 ahd_set_syncrate(ahd, &devinfo, cts->sync_period,
826                                  cts->sync_offset, ppr_options,
827                                  update_type, /*paused*/FALSE);
828         }
829         cts->ccb_h.status = CAM_REQ_CMP;
830 #endif
831 }
832
833 static void
834 ahd_get_tran_settings(struct ahd_softc *ahd, int our_id, char channel,
835                       struct ccb_trans_settings *cts)
836 {
837 #ifdef AHD_NEW_TRAN_SETTINGS
838         struct  ahd_devinfo devinfo;
839         struct  ccb_trans_settings_scsi *scsi;
840         struct  ccb_trans_settings_spi *spi;
841         struct  ahd_initiator_tinfo *targ_info;
842         struct  ahd_tmode_tstate *tstate;
843         struct  ahd_transinfo *tinfo;
844
845         scsi = &cts->proto_specific.scsi;
846         spi = &cts->xport_specific.spi;
847         ahd_compile_devinfo(&devinfo, our_id,
848                             cts->ccb_h.target_id,
849                             cts->ccb_h.target_lun,
850                             channel, ROLE_UNKNOWN);
851         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
852                                         devinfo.our_scsiid,
853                                         devinfo.target, &tstate);
854         
855         if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
856                 tinfo = &targ_info->curr;
857         else
858                 tinfo = &targ_info->user;
859         
860         scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
861         spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
862         if (cts->type == CTS_TYPE_USER_SETTINGS) {
863                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
864                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
865
866                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
867                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
868         } else {
869                 if ((tstate->discenable & devinfo.target_mask) != 0)
870                         spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
871
872                 if ((tstate->tagenable & devinfo.target_mask) != 0)
873                         scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
874         }
875         cts->protocol_version = tinfo->protocol_version;
876         cts->transport_version = tinfo->transport_version;
877
878         spi->sync_period = tinfo->period;
879         spi->sync_offset = tinfo->offset;
880         spi->bus_width = tinfo->width;
881         spi->ppr_options = tinfo->ppr_options;
882         
883         cts->protocol = PROTO_SCSI;
884         cts->transport = XPORT_SPI;
885         spi->valid = CTS_SPI_VALID_SYNC_RATE
886                    | CTS_SPI_VALID_SYNC_OFFSET
887                    | CTS_SPI_VALID_BUS_WIDTH
888                    | CTS_SPI_VALID_PPR_OPTIONS;
889
890         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD) {
891                 scsi->valid = CTS_SCSI_VALID_TQ;
892                 spi->valid |= CTS_SPI_VALID_DISC;
893         } else {
894                 scsi->valid = 0;
895         }
896
897         cts->ccb_h.status = CAM_REQ_CMP;
898 #else
899         struct  ahd_devinfo devinfo;
900         struct  ahd_initiator_tinfo *targ_info;
901         struct  ahd_tmode_tstate *tstate;
902         struct  ahd_transinfo *tinfo;
903
904         ahd_compile_devinfo(&devinfo, our_id,
905                             cts->ccb_h.target_id,
906                             cts->ccb_h.target_lun,
907                             channel, ROLE_UNKNOWN);
908         targ_info = ahd_fetch_transinfo(ahd, devinfo.channel,
909                                         devinfo.our_scsiid,
910                                         devinfo.target, &tstate);
911         
912         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) != 0)
913                 tinfo = &targ_info->curr;
914         else
915                 tinfo = &targ_info->user;
916         
917         cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);
918         if ((cts->flags & CCB_TRANS_CURRENT_SETTINGS) == 0) {
919                 if ((ahd->user_discenable & devinfo.target_mask) != 0)
920                         cts->flags |= CCB_TRANS_DISC_ENB;
921
922                 if ((ahd->user_tagenable & devinfo.target_mask) != 0)
923                         cts->flags |= CCB_TRANS_TAG_ENB;
924         } else {
925                 if ((tstate->discenable & devinfo.target_mask) != 0)
926                         cts->flags |= CCB_TRANS_DISC_ENB;
927
928                 if ((tstate->tagenable & devinfo.target_mask) != 0)
929                         cts->flags |= CCB_TRANS_TAG_ENB;
930         }
931         cts->sync_period = tinfo->period;
932         cts->sync_offset = tinfo->offset;
933         cts->bus_width = tinfo->width;
934         
935         cts->valid = CCB_TRANS_SYNC_RATE_VALID
936                    | CCB_TRANS_SYNC_OFFSET_VALID
937                    | CCB_TRANS_BUS_WIDTH_VALID;
938
939         if (cts->ccb_h.target_lun != CAM_LUN_WILDCARD)
940                 cts->valid |= CCB_TRANS_DISC_VALID|CCB_TRANS_TQ_VALID;
941
942         cts->ccb_h.status = CAM_REQ_CMP;
943 #endif
944 }
945
946 static void
947 ahd_async(void *callback_arg, uint32_t code, struct cam_path *path, void *arg)
948 {
949         struct ahd_softc *ahd;
950         struct cam_sim *sim;
951
952         sim = (struct cam_sim *)callback_arg;
953         ahd = (struct ahd_softc *)cam_sim_softc(sim);
954         switch (code) {
955         case AC_LOST_DEVICE:
956         {
957                 struct  ahd_devinfo devinfo;
958
959                 ahd_compile_devinfo(&devinfo, SIM_SCSI_ID(ahd, sim),
960                                     xpt_path_target_id(path),
961                                     xpt_path_lun_id(path),
962                                     SIM_CHANNEL(ahd, sim),
963                                     ROLE_UNKNOWN);
964
965                 /*
966                  * Revert to async/narrow transfers
967                  * for the next device.
968                  */
969                 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
970                               AHD_TRANS_GOAL|AHD_TRANS_CUR, /*paused*/FALSE);
971                 ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
972                                  /*ppr_options*/0, AHD_TRANS_GOAL|AHD_TRANS_CUR,
973                                  /*paused*/FALSE);
974                 break;
975         }
976         default:
977                 break;
978         }
979 }
980
981 static void
982 ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments,
983                 int error)
984 {
985         struct  scb *scb;
986         union   ccb *ccb;
987         struct  ahd_softc *ahd;
988         struct  ahd_initiator_tinfo *tinfo;
989         struct  ahd_tmode_tstate *tstate;
990         u_int   mask;
991
992         scb = (struct scb *)arg;
993         ccb = scb->io_ctx;
994         ahd = scb->ahd_softc;
995
996         if (error != 0) {
997                 if (error == EFBIG)
998                         aic_set_transaction_status(scb, CAM_REQ_TOO_BIG);
999                 else
1000                         aic_set_transaction_status(scb, CAM_REQ_CMP_ERR);
1001                 if (nsegments != 0)
1002                         bus_dmamap_unload(ahd->buffer_dmat, scb->dmamap);
1003                 ahd_free_scb(ahd, scb);
1004                 xpt_done(ccb);
1005                 return;
1006         }
1007         scb->sg_count = 0;
1008         if (nsegments != 0) {
1009                 void *sg;
1010                 bus_dmasync_op_t op;
1011                 u_int i;
1012
1013                 /* Copy the segments into our SG list */
1014                 for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
1015
1016                         sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
1017                                           dm_segs->ds_len,
1018                                           /*last*/i == 1);
1019                         dm_segs++;
1020                 }
1021                 
1022                 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1023                         op = BUS_DMASYNC_PREREAD;
1024                 else
1025                         op = BUS_DMASYNC_PREWRITE;
1026
1027                 bus_dmamap_sync(ahd->buffer_dmat, scb->dmamap, op);
1028
1029                 if (ccb->ccb_h.func_code == XPT_CONT_TARGET_IO) {
1030                         struct target_data *tdata;
1031
1032                         tdata = &scb->hscb->shared_data.tdata;
1033                         tdata->target_phases |= DPHASE_PENDING;
1034                         if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
1035                                 tdata->data_phase = P_DATAOUT;
1036                         else
1037                                 tdata->data_phase = P_DATAIN;
1038                 }
1039         }
1040
1041         /*
1042          * Last time we need to check if this SCB needs to
1043          * be aborted.
1044          */
1045         if (aic_get_transaction_status(scb) != CAM_REQ_INPROG) {
1046                 if (nsegments != 0)
1047                         bus_dmamap_unload(ahd->buffer_dmat,
1048                                           scb->dmamap);
1049                 ahd_free_scb(ahd, scb);
1050                 xpt_done(ccb);
1051                 return;
1052         }
1053
1054         tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid),
1055                                     SCSIID_OUR_ID(scb->hscb->scsiid),
1056                                     SCSIID_TARGET(ahd, scb->hscb->scsiid),
1057                                     &tstate);
1058
1059         mask = SCB_GET_TARGET_MASK(ahd, scb);
1060
1061         if ((tstate->discenable & mask) != 0
1062          && (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) == 0)
1063                 scb->hscb->control |= DISCENB;
1064
1065         if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1066                 scb->flags |= SCB_PACKETIZED;
1067                 if (scb->hscb->task_management != 0)
1068                         scb->hscb->control &= ~MK_MESSAGE;
1069         }
1070
1071         if ((ccb->ccb_h.flags & CAM_NEGOTIATE) != 0
1072          && (tinfo->goal.width != 0
1073           || tinfo->goal.period != 0
1074           || tinfo->goal.ppr_options != 0)) {
1075                 scb->flags |= SCB_NEGOTIATE;
1076                 scb->hscb->control |= MK_MESSAGE;
1077         } else if ((tstate->auto_negotiate & mask) != 0) {
1078                 scb->flags |= SCB_AUTO_NEGOTIATE;
1079                 scb->hscb->control |= MK_MESSAGE;
1080         }
1081
1082         LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1083
1084         ccb->ccb_h.status |= CAM_SIM_QUEUED;
1085
1086         aic_scb_timer_start(scb);
1087
1088         if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
1089                 /* Define a mapping from our tag to the SCB. */
1090                 ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb;
1091                 ahd_pause(ahd);
1092                 ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
1093                 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
1094                 ahd_unpause(ahd);
1095         } else {
1096                 ahd_queue_scb(ahd, scb);
1097         }
1098 }
1099
1100 static void
1101 ahd_poll(struct cam_sim *sim)
1102 {
1103         ahd_intr(cam_sim_softc(sim));
1104 }
1105
1106 static void
1107 ahd_setup_data(struct ahd_softc *ahd, struct cam_sim *sim,
1108                struct ccb_scsiio *csio, struct scb *scb)
1109 {
1110         struct hardware_scb *hscb;
1111         struct ccb_hdr *ccb_h;
1112         
1113         hscb = scb->hscb;
1114         ccb_h = &csio->ccb_h;
1115         
1116         csio->resid = 0;
1117         csio->sense_resid = 0;
1118         if (ccb_h->func_code == XPT_SCSI_IO) {
1119                 hscb->cdb_len = csio->cdb_len;
1120                 if ((ccb_h->flags & CAM_CDB_POINTER) != 0) {
1121
1122                         if (hscb->cdb_len > MAX_CDB_LEN
1123                          && (ccb_h->flags & CAM_CDB_PHYS) == 0) {
1124
1125                                 /*
1126                                  * Should CAM start to support CDB sizes
1127                                  * greater than 16 bytes, we could use
1128                                  * the sense buffer to store the CDB.
1129                                  */
1130                                 aic_set_transaction_status(scb,
1131                                                            CAM_REQ_INVALID);
1132                                 ahd_free_scb(ahd, scb);
1133                                 xpt_done((union ccb *)csio);
1134                                 return;
1135                         }
1136                         if ((ccb_h->flags & CAM_CDB_PHYS) != 0) {
1137                                 hscb->shared_data.idata.cdb_from_host.cdbptr =
1138                                    aic_htole64((uintptr_t)csio->cdb_io.cdb_ptr);
1139                                 hscb->shared_data.idata.cdb_from_host.cdblen =
1140                                    csio->cdb_len;
1141                                 hscb->cdb_len |= SCB_CDB_LEN_PTR;
1142                         } else {
1143                                 memcpy(hscb->shared_data.idata.cdb, 
1144                                        csio->cdb_io.cdb_ptr,
1145                                        hscb->cdb_len);
1146                         }
1147                 } else {
1148                         if (hscb->cdb_len > MAX_CDB_LEN) {
1149
1150                                 aic_set_transaction_status(scb,
1151                                                            CAM_REQ_INVALID);
1152                                 ahd_free_scb(ahd, scb);
1153                                 xpt_done((union ccb *)csio);
1154                                 return;
1155                         }
1156                         memcpy(hscb->shared_data.idata.cdb,
1157                                csio->cdb_io.cdb_bytes, hscb->cdb_len);
1158                 }
1159         }
1160                 
1161         /* Only use S/G if there is a transfer */
1162         if ((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1163                 if ((ccb_h->flags & CAM_SCATTER_VALID) == 0) {
1164                         /* We've been given a pointer to a single buffer */
1165                         if ((ccb_h->flags & CAM_DATA_PHYS) == 0) {
1166                                 int error;
1167
1168                                 crit_enter();
1169                                 error = bus_dmamap_load(ahd->buffer_dmat,
1170                                                         scb->dmamap,
1171                                                         csio->data_ptr,
1172                                                         csio->dxfer_len,
1173                                                         ahd_execute_scb,
1174                                                         scb, /*flags*/0);
1175                                 if (error == EINPROGRESS) {
1176                                         /*
1177                                          * So as to maintain ordering,
1178                                          * freeze the controller queue
1179                                          * until our mapping is
1180                                          * returned.
1181                                          */
1182                                         xpt_freeze_simq(sim,
1183                                                         /*count*/1);
1184                                         scb->io_ctx->ccb_h.status |=
1185                                             CAM_RELEASE_SIMQ;
1186                                 }
1187                                 crit_exit();
1188                         } else {
1189                                 struct bus_dma_segment seg;
1190
1191                                 /* Pointer to physical buffer */
1192                                 if (csio->dxfer_len > AHD_MAXTRANSFER_SIZE)
1193                                         panic("ahd_setup_data - Transfer size "
1194                                               "larger than can device max");
1195
1196                                 seg.ds_addr =
1197                                     (bus_addr_t)(vm_offset_t)csio->data_ptr;
1198                                 seg.ds_len = csio->dxfer_len;
1199                                 ahd_execute_scb(scb, &seg, 1, 0);
1200                         }
1201                 } else {
1202                         struct bus_dma_segment *segs;
1203
1204                         if ((ccb_h->flags & CAM_DATA_PHYS) != 0)
1205                                 panic("ahd_setup_data - Physical segment "
1206                                       "pointers unsupported");
1207
1208                         if ((ccb_h->flags & CAM_SG_LIST_PHYS) == 0)
1209                                 panic("ahd_setup_data - Virtual segment "
1210                                       "addresses unsupported");
1211
1212                         /* Just use the segments provided */
1213                         segs = (struct bus_dma_segment *)csio->data_ptr;
1214                         ahd_execute_scb(scb, segs, csio->sglist_cnt, 0);
1215                 }
1216         } else {
1217                 ahd_execute_scb(scb, NULL, 0, 0);
1218         }
1219 }
1220
1221 static void
1222 ahd_abort_ccb(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
1223 {
1224         union ccb *abort_ccb;
1225
1226         abort_ccb = ccb->cab.abort_ccb;
1227         switch (abort_ccb->ccb_h.func_code) {
1228 #ifdef AHD_TARGET_MODE
1229         case XPT_ACCEPT_TARGET_IO:
1230         case XPT_IMMED_NOTIFY:
1231         case XPT_CONT_TARGET_IO:
1232         {
1233                 struct ahd_tmode_tstate *tstate;
1234                 struct ahd_tmode_lstate *lstate;
1235                 struct ccb_hdr_slist *list;
1236                 cam_status status;
1237
1238                 status = ahd_find_tmode_devs(ahd, sim, abort_ccb, &tstate,
1239                                              &lstate, TRUE);
1240
1241                 if (status != CAM_REQ_CMP) {
1242                         ccb->ccb_h.status = status;
1243                         break;
1244                 }
1245
1246                 if (abort_ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
1247                         list = &lstate->accept_tios;
1248                 else if (abort_ccb->ccb_h.func_code == XPT_IMMED_NOTIFY)
1249                         list = &lstate->immed_notifies;
1250                 else
1251                         list = NULL;
1252
1253                 if (list != NULL) {
1254                         struct ccb_hdr *curelm;
1255                         int found;
1256
1257                         curelm = SLIST_FIRST(list);
1258                         found = 0;
1259                         if (curelm == &abort_ccb->ccb_h) {
1260                                 found = 1;
1261                                 SLIST_REMOVE_HEAD(list, sim_links.sle);
1262                         } else {
1263                                 while(curelm != NULL) {
1264                                         struct ccb_hdr *nextelm;
1265
1266                                         nextelm =
1267                                             SLIST_NEXT(curelm, sim_links.sle);
1268
1269                                         if (nextelm == &abort_ccb->ccb_h) {
1270                                                 found = 1;
1271                                                 SLIST_NEXT(curelm,
1272                                                            sim_links.sle) =
1273                                                     SLIST_NEXT(nextelm,
1274                                                                sim_links.sle);
1275                                                 break;
1276                                         }
1277                                         curelm = nextelm;
1278                                 }
1279                         }
1280
1281                         if (found) {
1282                                 abort_ccb->ccb_h.status = CAM_REQ_ABORTED;
1283                                 xpt_done(abort_ccb);
1284                                 ccb->ccb_h.status = CAM_REQ_CMP;
1285                         } else {
1286                                 xpt_print_path(abort_ccb->ccb_h.path);
1287                                 kprintf("Not found\n");
1288                                 ccb->ccb_h.status = CAM_PATH_INVALID;
1289                         }
1290                         break;
1291                 }
1292                 /* FALLTHROUGH */
1293         }
1294 #endif
1295         case XPT_SCSI_IO:
1296                 /* XXX Fully implement the hard ones */
1297                 ccb->ccb_h.status = CAM_UA_ABORT;
1298                 break;
1299         default:
1300                 ccb->ccb_h.status = CAM_REQ_INVALID;
1301                 break;
1302         }
1303         xpt_done(ccb);
1304 }
1305
1306 void
1307 ahd_send_async(struct ahd_softc *ahd, char channel, u_int target,
1308                 u_int lun, ac_code code, void *opt_arg)
1309 {
1310         struct  ccb_trans_settings cts;
1311         struct cam_path *path;
1312         void *arg;
1313         int error;
1314
1315         arg = NULL;
1316         error = ahd_create_path(ahd, channel, target, lun, &path);
1317
1318         if (error != CAM_REQ_CMP)
1319                 return;
1320
1321         switch (code) {
1322         case AC_TRANSFER_NEG:
1323         {
1324 #ifdef AHD_NEW_TRAN_SETTINGS
1325                 struct  ccb_trans_settings_scsi *scsi;
1326         
1327                 cts.type = CTS_TYPE_CURRENT_SETTINGS;
1328                 scsi = &cts.proto_specific.scsi;
1329 #else
1330                 cts.flags = CCB_TRANS_CURRENT_SETTINGS;
1331 #endif
1332                 cts.ccb_h.path = path;
1333                 cts.ccb_h.target_id = target;
1334                 cts.ccb_h.target_lun = lun;
1335                 ahd_get_tran_settings(ahd, ahd->our_id, channel, &cts);
1336                 arg = &cts;
1337 #ifdef AHD_NEW_TRAN_SETTINGS
1338                 scsi->valid &= ~CTS_SCSI_VALID_TQ;
1339                 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
1340 #else
1341                 cts.valid &= ~CCB_TRANS_TQ_VALID;
1342                 cts.flags &= ~CCB_TRANS_TAG_ENB;
1343 #endif
1344                 if (opt_arg == NULL)
1345                         break;
1346                 if (*((ahd_queue_alg *)opt_arg) == AHD_QUEUE_TAGGED)
1347 #ifdef AHD_NEW_TRAN_SETTINGS
1348                         scsi->flags |= ~CTS_SCSI_FLAGS_TAG_ENB;
1349                 scsi->valid |= CTS_SCSI_VALID_TQ;
1350 #else
1351                         cts.flags |= CCB_TRANS_TAG_ENB;
1352                 cts.valid |= CCB_TRANS_TQ_VALID;
1353 #endif
1354                 break;
1355         }
1356         case AC_SENT_BDR:
1357         case AC_BUS_RESET:
1358                 break;
1359         default:
1360                 panic("ahd_send_async: Unexpected async event");
1361         }
1362         xpt_async(code, path, arg);
1363         xpt_free_path(path);
1364 }
1365
1366 void
1367 ahd_platform_set_tags(struct ahd_softc *ahd,
1368                       struct ahd_devinfo *devinfo, int enable)
1369 {
1370 }
1371
1372 int
1373 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1374 {
1375         ahd->platform_data = kmalloc(sizeof(struct ahd_platform_data), M_DEVBUF,
1376                                     M_INTWAIT | M_ZERO);
1377         return (0);
1378 }
1379
1380 void
1381 ahd_platform_free(struct ahd_softc *ahd)
1382 {
1383         struct ahd_platform_data *pdata;
1384
1385         pdata = ahd->platform_data;
1386         if (pdata != NULL) {
1387                 if (pdata->regs[0] != NULL)
1388                         bus_release_resource(ahd->dev_softc,
1389                                              pdata->regs_res_type[0],
1390                                              pdata->regs_res_id[0],
1391                                              pdata->regs[0]);
1392
1393                 if (pdata->regs[1] != NULL)
1394                         bus_release_resource(ahd->dev_softc,
1395                                              pdata->regs_res_type[1],
1396                                              pdata->regs_res_id[1],
1397                                              pdata->regs[1]);
1398
1399                 if (pdata->irq != NULL)
1400                         bus_release_resource(ahd->dev_softc,
1401                                              pdata->irq_res_type,
1402                                              0, pdata->irq);
1403
1404                 if (pdata->sim != NULL) {
1405                         xpt_async(AC_LOST_DEVICE, pdata->path, NULL);
1406                         xpt_free_path(pdata->path);
1407                         xpt_bus_deregister(cam_sim_path(pdata->sim));
1408                         cam_sim_free(pdata->sim);
1409                 }
1410                 if (pdata->eh != NULL)
1411                         EVENTHANDLER_DEREGISTER(shutdown_post_sync, pdata->eh);
1412                 kfree(ahd->platform_data, M_DEVBUF);
1413         }
1414 }
1415
1416 int
1417 ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
1418 {
1419         /* We don't sort softcs under FreeBSD so report equal always */
1420         return (0);
1421 }
1422
1423 int
1424 ahd_detach(device_t dev)
1425 {
1426         struct ahd_softc *ahd;
1427
1428         device_printf(dev, "detaching device\n");
1429         ahd = device_get_softc(dev);
1430         ahd_lock(ahd);
1431         TAILQ_REMOVE(&ahd_tailq, ahd, links);
1432         ahd_intr_enable(ahd, FALSE);
1433         bus_teardown_intr(dev, ahd->platform_data->irq, ahd->platform_data->ih);
1434         ahd_unlock(ahd);
1435         ahd_free(ahd);
1436         return (0);
1437 }
1438
1439 #if 0
1440 static void
1441 ahd_dump_targcmd(struct target_cmd *cmd)
1442 {
1443         uint8_t *byte;
1444         uint8_t *last_byte;
1445         int i;
1446
1447         byte = &cmd->initiator_channel;
1448         /* Debugging info for received commands */
1449         last_byte = &cmd[1].initiator_channel;
1450
1451         i = 0;
1452         while (byte < last_byte) {
1453                 if (i == 0)
1454                         kprintf("\t");
1455                 kprintf("%#x", *byte++);
1456                 i++;
1457                 if (i == 8) {
1458                         kprintf("\n");
1459                         i = 0;
1460                 } else {
1461                         kprintf(", ");
1462                 }
1463         }
1464 }
1465 #endif
1466
1467 static int
1468 ahd_modevent(module_t mod, int type, void *data)
1469 {
1470         /* XXX Deal with busy status on unload. */
1471         /* XXX Deal with unknown events */
1472         return 0;
1473 }
1474   
1475 static moduledata_t ahd_mod = {
1476         "ahd",
1477         ahd_modevent,
1478         NULL
1479 };
1480
1481 /********************************** DDB Hooks *********************************/
1482 #ifdef DDB
1483 static struct ahd_softc *ahd_ddb_softc;
1484 static int ahd_ddb_paused;
1485 static int ahd_ddb_paused_on_entry;
1486 DB_COMMAND(ahd_sunit, ahd_ddb_sunit)
1487 {
1488         struct ahd_softc *list_ahd;
1489
1490         ahd_ddb_softc = NULL;
1491         TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
1492                 if (list_ahd->unit == addr)
1493                         ahd_ddb_softc = list_ahd;
1494         }
1495         if (ahd_ddb_softc == NULL)
1496                 db_error("No matching softc found!\n");
1497 }
1498
1499 DB_COMMAND(ahd_pause, ahd_ddb_pause)
1500 {
1501         if (ahd_ddb_softc == NULL) {
1502                 db_error("Must set unit with ahd_sunit first!\n");
1503                 return;
1504         }
1505         if (ahd_ddb_paused == 0) {
1506                 ahd_ddb_paused++;
1507                 if (ahd_is_paused(ahd_ddb_softc)) {
1508                         ahd_ddb_paused_on_entry++;
1509                         return;
1510                 }
1511                 ahd_pause(ahd_ddb_softc);
1512         }
1513 }
1514
1515 DB_COMMAND(ahd_unpause, ahd_ddb_unpause)
1516 {
1517         if (ahd_ddb_softc == NULL) {
1518                 db_error("Must set unit with ahd_sunit first!\n");
1519                 return;
1520         }
1521         if (ahd_ddb_paused != 0) {
1522                 ahd_ddb_paused = 0;
1523                 if (ahd_ddb_paused_on_entry)
1524                         return;
1525                 ahd_unpause(ahd_ddb_softc);
1526         } else if (ahd_ddb_paused_on_entry != 0) {
1527                 /* Two unpauses to clear a paused on entry. */
1528                 ahd_ddb_paused_on_entry = 0;
1529                 ahd_unpause(ahd_ddb_softc);
1530         }
1531 }
1532
1533 DB_COMMAND(ahd_in, ahd_ddb_in)
1534 {
1535         int c;
1536         int size;
1537  
1538         if (ahd_ddb_softc == NULL) {
1539                 db_error("Must set unit with ahd_sunit first!\n");
1540                 return;
1541         }
1542         if (have_addr == 0)
1543                 return;
1544
1545         size = 1;
1546         while ((c = *modif++) != '\0') {
1547                 switch (c) {
1548                 case 'b':
1549                         size = 1;
1550                         break;
1551                 case 'w':
1552                         size = 2;
1553                         break;
1554                 case 'l':
1555                         size = 4;
1556                 break;
1557                 }
1558         }
1559
1560         if (count <= 0)
1561                 count = 1;
1562         while (--count >= 0) {
1563                 db_printf("%04lx (M)%x: \t", (u_long)addr,
1564                           ahd_inb(ahd_ddb_softc, MODE_PTR));
1565                 switch (size) {
1566                 case 1:
1567                         db_printf("%02x\n", ahd_inb(ahd_ddb_softc, addr));
1568                         break;
1569                 case 2:
1570                         db_printf("%04x\n", ahd_inw(ahd_ddb_softc, addr));
1571                         break;
1572                 case 4:
1573                         db_printf("%08x\n", ahd_inl(ahd_ddb_softc, addr));
1574                         break;
1575                 }
1576         }
1577 }
1578
1579 DB_SET(ahd_out, ahd_ddb_out, db_cmd_set, CS_MORE, NULL)
1580 {
1581         db_expr_t old_value;
1582         db_expr_t new_value;
1583         int       size;
1584  
1585         if (ahd_ddb_softc == NULL) {
1586                 db_error("Must set unit with ahd_sunit first!\n");
1587                 return;
1588         }
1589
1590         switch (modif[0]) {
1591         case '\0':
1592         case 'b':
1593                 size = 1;
1594                 break;
1595         case 'h':
1596                 size = 2;
1597                 break;
1598         case 'l':
1599                 size = 4;
1600                 break;
1601         default:
1602                 db_error("Unknown size\n");
1603                 return;
1604         }
1605  
1606         while (db_expression(&new_value)) {
1607                 switch (size) {
1608                 default:
1609                 case 1:
1610                         old_value = ahd_inb(ahd_ddb_softc, addr);
1611                         ahd_outb(ahd_ddb_softc, addr, new_value);
1612                         break;
1613                 case 2:
1614                         old_value = ahd_inw(ahd_ddb_softc, addr);
1615                         ahd_outw(ahd_ddb_softc, addr, new_value);
1616                         break;
1617                 case 4:
1618                         old_value = ahd_inl(ahd_ddb_softc, addr);
1619                         ahd_outl(ahd_ddb_softc, addr, new_value);
1620                         break;
1621                 }
1622                 db_printf("%04lx (M)%x: \t0x%lx\t=\t0x%lx",
1623                           (u_long)addr, ahd_inb(ahd_ddb_softc, MODE_PTR),
1624                           (u_long)old_value, (u_long)new_value);
1625                 addr += size;
1626         }
1627         db_skip_to_eol();
1628 }
1629
1630 DB_COMMAND(ahd_dump, ahd_ddb_dump)
1631 {
1632         if (ahd_ddb_softc == NULL) {
1633                 db_error("Must set unit with ahd_sunit first!\n");
1634                 return;
1635         }
1636         ahd_dump_card_state(ahd_ddb_softc);
1637 }
1638
1639 #endif
1640
1641
1642 DECLARE_MODULE(ahd, ahd_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
1643 MODULE_DEPEND(ahd, cam, 1, 1, 1);
1644 MODULE_VERSION(ahd, 1);