1 | /* $NetBSD: aic79xx_osm.c,v 1.33 2016/07/14 04:00:45 msaitoh Exp $ */ |
2 | |
3 | /* |
4 | * Bus independent NetBSD shim for the aic7xxx based adaptec SCSI controllers |
5 | * |
6 | * Copyright (c) 1994-2002 Justin T. Gibbs. |
7 | * Copyright (c) 2001-2002 Adaptec Inc. |
8 | * All rights reserved. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions, and the following disclaimer, |
15 | * without modification. |
16 | * 2. The name of the author may not be used to endorse or promote products |
17 | * derived from this software without specific prior written permission. |
18 | * |
19 | * Alternatively, this software may be distributed under the terms of the |
20 | * GNU Public License ("GPL"). |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR |
26 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | * SUCH DAMAGE. |
33 | * |
34 | * //depot/aic7xxx/freebsd/dev/aic7xxx/aic79xx_osm.c#26 $ |
35 | * |
36 | * $FreeBSD: src/sys/dev/aic7xxx/aic79xx_osm.c,v 1.11 2003/05/04 00:20:07 gibbs Exp $ |
37 | */ |
38 | /* |
39 | * Ported from FreeBSD by Pascal Renauld, Network Storage Solutions, Inc. |
40 | * - April 2003 |
41 | */ |
42 | |
43 | #include <sys/cdefs.h> |
44 | __KERNEL_RCSID(0, "$NetBSD: aic79xx_osm.c,v 1.33 2016/07/14 04:00:45 msaitoh Exp $" ); |
45 | |
46 | #include <dev/ic/aic79xx_osm.h> |
47 | #include <dev/ic/aic79xx_inline.h> |
48 | |
49 | #ifndef AHD_TMODE_ENABLE |
50 | #define AHD_TMODE_ENABLE 0 |
51 | #endif |
52 | |
53 | static int ahd_ioctl(struct scsipi_channel *channel, u_long cmd, |
54 | void *addr, int flag, struct proc *p); |
55 | static void ahd_action(struct scsipi_channel *chan, |
56 | scsipi_adapter_req_t req, void *arg); |
57 | static void ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, |
58 | int nsegments); |
59 | static int ahd_poll(struct ahd_softc *ahd, int wait); |
60 | static void ahd_setup_data(struct ahd_softc *ahd, struct scsipi_xfer *xs, |
61 | struct scb *scb); |
62 | |
63 | #if NOT_YET |
64 | static void ahd_set_recoveryscb(struct ahd_softc *ahd, struct scb *scb); |
65 | #endif |
66 | |
67 | static bool ahd_pmf_suspend(device_t, const pmf_qual_t *); |
68 | static bool ahd_pmf_resume(device_t, const pmf_qual_t *); |
69 | static bool ahd_pmf_shutdown(device_t, int); |
70 | |
71 | /* |
72 | * Attach all the sub-devices we can find |
73 | */ |
74 | int |
75 | ahd_attach(struct ahd_softc *ahd) |
76 | { |
77 | int s; |
78 | char ahd_info[256]; |
79 | |
80 | ahd_controller_info(ahd, ahd_info, sizeof(ahd_info)); |
81 | aprint_normal("%s: %s\n" , ahd_name(ahd), ahd_info); |
82 | |
83 | ahd_lock(ahd, &s); |
84 | |
85 | ahd->sc_adapter.adapt_dev = ahd->sc_dev; |
86 | ahd->sc_adapter.adapt_nchannels = 1; |
87 | |
88 | ahd->sc_adapter.adapt_openings = ahd->scb_data.numscbs - 1; |
89 | ahd->sc_adapter.adapt_max_periph = 32; |
90 | |
91 | ahd->sc_adapter.adapt_ioctl = ahd_ioctl; |
92 | ahd->sc_adapter.adapt_minphys = ahd_minphys; |
93 | ahd->sc_adapter.adapt_request = ahd_action; |
94 | |
95 | ahd->sc_channel.chan_adapter = &ahd->sc_adapter; |
96 | ahd->sc_channel.chan_bustype = &scsi_bustype; |
97 | ahd->sc_channel.chan_channel = 0; |
98 | ahd->sc_channel.chan_ntargets = AHD_NUM_TARGETS; |
99 | ahd->sc_channel.chan_nluns = 8 /*AHD_NUM_LUNS*/; |
100 | ahd->sc_channel.chan_id = ahd->our_id; |
101 | ahd->sc_channel.chan_flags |= SCSIPI_CHAN_CANGROW; |
102 | |
103 | ahd->sc_child = config_found(ahd->sc_dev, &ahd->sc_channel, scsiprint); |
104 | |
105 | ahd_intr_enable(ahd, TRUE); |
106 | |
107 | if (ahd->flags & AHD_RESET_BUS_A) |
108 | ahd_reset_channel(ahd, 'A', TRUE); |
109 | |
110 | if (!pmf_device_register1(ahd->sc_dev, |
111 | ahd_pmf_suspend, ahd_pmf_resume, ahd_pmf_shutdown)) |
112 | aprint_error_dev(ahd->sc_dev, |
113 | "couldn't establish power handler\n" ); |
114 | |
115 | ahd_unlock(ahd, &s); |
116 | |
117 | return (1); |
118 | } |
119 | |
120 | static bool |
121 | ahd_pmf_suspend(device_t dev, const pmf_qual_t *qual) |
122 | { |
123 | struct ahd_softc *sc = device_private(dev); |
124 | #if 0 |
125 | return (ahd_suspend(sc) == 0); |
126 | #else |
127 | ahd_shutdown(sc); |
128 | return true; |
129 | #endif |
130 | } |
131 | |
132 | static bool |
133 | ahd_pmf_resume(device_t dev, const pmf_qual_t *qual) |
134 | { |
135 | #if 0 |
136 | struct ahd_softc *sc = device_private(dev); |
137 | |
138 | return (ahd_resume(sc) == 0); |
139 | #else |
140 | return true; |
141 | #endif |
142 | } |
143 | |
144 | static bool |
145 | ahd_pmf_shutdown(device_t dev, int howto) |
146 | { |
147 | struct ahd_softc *sc = device_private(dev); |
148 | |
149 | /* Disable all interrupt sources by resetting the controller */ |
150 | ahd_shutdown(sc); |
151 | |
152 | return true; |
153 | } |
154 | |
155 | static int |
156 | ahd_ioctl(struct scsipi_channel *channel, u_long cmd, |
157 | void *addr, int flag, struct proc *p) |
158 | { |
159 | struct ahd_softc *ahd; |
160 | int s, ret = ENOTTY; |
161 | |
162 | ahd = device_private(channel->chan_adapter->adapt_dev); |
163 | |
164 | switch (cmd) { |
165 | case SCBUSIORESET: |
166 | s = splbio(); |
167 | ahd_reset_channel(ahd, channel->chan_channel == 1 ? 'B' : 'A', TRUE); |
168 | splx(s); |
169 | ret = 0; |
170 | break; |
171 | default: |
172 | break; |
173 | } |
174 | |
175 | return ret; |
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 = arg; |
187 | |
188 | printf("%s; ahd_platform_intr\n" , ahd_name(ahd)); |
189 | |
190 | ahd_intr(ahd); |
191 | } |
192 | |
193 | /* |
194 | * We have an scb which has been processed by the |
195 | * adaptor, now we look to see how the operation * went. |
196 | */ |
197 | void |
198 | ahd_done(struct ahd_softc *ahd, struct scb *scb) |
199 | { |
200 | struct scsipi_xfer *xs; |
201 | struct scsipi_periph *periph; |
202 | int s; |
203 | |
204 | LIST_REMOVE(scb, pending_links); |
205 | |
206 | xs = scb->xs; |
207 | periph = xs->xs_periph; |
208 | |
209 | callout_stop(&scb->xs->xs_callout); |
210 | |
211 | if (xs->datalen) { |
212 | int op; |
213 | |
214 | if (xs->xs_control & XS_CTL_DATA_IN) |
215 | op = BUS_DMASYNC_POSTREAD; |
216 | else |
217 | op = BUS_DMASYNC_POSTWRITE; |
218 | |
219 | bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0, |
220 | scb->dmamap->dm_mapsize, op); |
221 | bus_dmamap_unload(ahd->parent_dmat, scb->dmamap); |
222 | } |
223 | |
224 | /* |
225 | * If the recovery SCB completes, we have to be |
226 | * out of our timeout. |
227 | */ |
228 | if ((scb->flags & SCB_RECOVERY_SCB) != 0) { |
229 | struct scb *list_scb; |
230 | |
231 | /* |
232 | * We were able to complete the command successfully, |
233 | * so reinstate the timeouts for all other pending |
234 | * commands. |
235 | */ |
236 | LIST_FOREACH(list_scb, &ahd->pending_scbs, pending_links) { |
237 | struct scsipi_xfer *txs = list_scb->xs; |
238 | |
239 | if (!(txs->xs_control & XS_CTL_POLL)) { |
240 | callout_reset(&txs->xs_callout, |
241 | (txs->timeout > 1000000) ? |
242 | (txs->timeout / 1000) * hz : |
243 | (txs->timeout * hz) / 1000, |
244 | ahd_timeout, list_scb); |
245 | } |
246 | } |
247 | |
248 | if (ahd_get_transaction_status(scb) != XS_NOERROR) |
249 | ahd_set_transaction_status(scb, XS_TIMEOUT); |
250 | scsipi_printaddr(xs->xs_periph); |
251 | printf("%s: no longer in timeout, status = %x\n" , |
252 | ahd_name(ahd), xs->status); |
253 | } |
254 | |
255 | if (xs->error != XS_NOERROR) { |
256 | /* Don't clobber any existing error state */ |
257 | } else if ((xs->status == SCSI_STATUS_BUSY) || |
258 | (xs->status == SCSI_STATUS_QUEUE_FULL)) { |
259 | ahd_set_transaction_status(scb, XS_BUSY); |
260 | printf("%s: drive (ID %d, LUN %d) queue full (SCB 0x%x)\n" , |
261 | ahd_name(ahd), SCB_GET_TARGET(ahd,scb), SCB_GET_LUN(scb), SCB_GET_TAG(scb)); |
262 | } else if ((scb->flags & SCB_SENSE) != 0) { |
263 | /* |
264 | * We performed autosense retrieval. |
265 | * |
266 | * zero the sense data before having |
267 | * the drive fill it. The SCSI spec mandates |
268 | * that any untransferred data should be |
269 | * assumed to be zero. Complete the 'bounce' |
270 | * of sense information through buffers accessible |
271 | * via bus-space by copying it into the clients |
272 | * csio. |
273 | */ |
274 | memset(&xs->sense.scsi_sense, 0, sizeof(xs->sense.scsi_sense)); |
275 | memcpy(&xs->sense.scsi_sense, ahd_get_sense_buf(ahd, scb), |
276 | sizeof(struct scsi_sense_data)); |
277 | |
278 | ahd_set_transaction_status(scb, XS_SENSE); |
279 | } else if ((scb->flags & SCB_PKT_SENSE) != 0) { |
280 | struct scsi_status_iu_header *siu; |
281 | u_int sense_len; |
282 | #ifdef AHD_DEBUG |
283 | int i; |
284 | #endif |
285 | /* |
286 | * Copy only the sense data into the provided buffer. |
287 | */ |
288 | siu = (struct scsi_status_iu_header *)scb->sense_data; |
289 | sense_len = MIN(scsi_4btoul(siu->sense_length), |
290 | sizeof(xs->sense.scsi_sense)); |
291 | memset(&xs->sense.scsi_sense, 0, sizeof(xs->sense.scsi_sense)); |
292 | memcpy(&xs->sense.scsi_sense, |
293 | scb->sense_data + SIU_SENSE_OFFSET(siu), sense_len); |
294 | #ifdef AHD_DEBUG |
295 | printf("Copied %d bytes of sense data offset %d:" , sense_len, |
296 | SIU_SENSE_OFFSET(siu)); |
297 | for (i = 0; i < sense_len; i++) |
298 | printf(" 0x%x" , ((uint8_t *)&xs->sense.scsi_sense)[i]); |
299 | printf("\n" ); |
300 | #endif |
301 | ahd_set_transaction_status(scb, XS_SENSE); |
302 | } |
303 | |
304 | if (scb->flags & SCB_FREEZE_QUEUE) { |
305 | scsipi_periph_thaw(periph, 1); |
306 | scb->flags &= ~SCB_FREEZE_QUEUE; |
307 | } |
308 | |
309 | if (scb->flags & SCB_REQUEUE) |
310 | ahd_set_transaction_status(scb, XS_REQUEUE); |
311 | |
312 | ahd_lock(ahd, &s); |
313 | ahd_free_scb(ahd, scb); |
314 | ahd_unlock(ahd, &s); |
315 | |
316 | scsipi_done(xs); |
317 | } |
318 | |
319 | static void |
320 | ahd_action(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg) |
321 | { |
322 | struct ahd_softc *ahd; |
323 | struct ahd_initiator_tinfo *tinfo; |
324 | struct ahd_tmode_tstate *tstate; |
325 | |
326 | ahd = device_private(chan->chan_adapter->adapt_dev); |
327 | |
328 | switch(req) { |
329 | |
330 | case ADAPTER_REQ_RUN_XFER: |
331 | { |
332 | struct scsipi_xfer *xs; |
333 | struct scsipi_periph *periph; |
334 | struct scb *scb; |
335 | struct hardware_scb *hscb; |
336 | u_int target_id; |
337 | u_int our_id; |
338 | u_int col_idx; |
339 | char channel; |
340 | int s; |
341 | |
342 | xs = arg; |
343 | periph = xs->xs_periph; |
344 | |
345 | SC_DEBUG(periph, SCSIPI_DB3, ("ahd_action\n" )); |
346 | |
347 | target_id = periph->periph_target; |
348 | our_id = ahd->our_id; |
349 | channel = (chan->chan_channel == 1) ? 'B' : 'A'; |
350 | |
351 | /* |
352 | * get an scb to use. |
353 | */ |
354 | ahd_lock(ahd, &s); |
355 | tinfo = ahd_fetch_transinfo(ahd, channel, our_id, |
356 | target_id, &tstate); |
357 | |
358 | if (xs->xs_tag_type != 0 || |
359 | (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) |
360 | col_idx = AHD_NEVER_COL_IDX; |
361 | else |
362 | col_idx = AHD_BUILD_COL_IDX(target_id, |
363 | periph->periph_lun); |
364 | |
365 | if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { |
366 | xs->error = XS_RESOURCE_SHORTAGE; |
367 | ahd_unlock(ahd, &s); |
368 | scsipi_done(xs); |
369 | return; |
370 | } |
371 | ahd_unlock(ahd, &s); |
372 | |
373 | hscb = scb->hscb; |
374 | |
375 | SC_DEBUG(periph, SCSIPI_DB3, ("start scb(%p)\n" , scb)); |
376 | scb->xs = xs; |
377 | |
378 | /* |
379 | * Put all the arguments for the xfer in the scb |
380 | */ |
381 | hscb->control = 0; |
382 | hscb->scsiid = BUILD_SCSIID(ahd, sim, target_id, our_id); |
383 | hscb->lun = periph->periph_lun; |
384 | if (xs->xs_control & XS_CTL_RESET) { |
385 | hscb->cdb_len = 0; |
386 | scb->flags |= SCB_DEVICE_RESET; |
387 | hscb->control |= MK_MESSAGE; |
388 | hscb->task_management = SIU_TASKMGMT_LUN_RESET; |
389 | ahd_execute_scb(scb, NULL, 0); |
390 | } else { |
391 | hscb->task_management = 0; |
392 | } |
393 | |
394 | ahd_setup_data(ahd, xs, scb); |
395 | break; |
396 | } |
397 | |
398 | case ADAPTER_REQ_GROW_RESOURCES: |
399 | #ifdef AHC_DEBUG |
400 | printf("%s: ADAPTER_REQ_GROW_RESOURCES\n" , ahd_name(ahd)); |
401 | #endif |
402 | chan->chan_adapter->adapt_openings += ahd_alloc_scbs(ahd); |
403 | if (ahd->scb_data.numscbs >= AHD_SCB_MAX_ALLOC) |
404 | chan->chan_flags &= ~SCSIPI_CHAN_CANGROW; |
405 | break; |
406 | |
407 | case ADAPTER_REQ_SET_XFER_MODE: |
408 | { |
409 | struct scsipi_xfer_mode *xm = arg; |
410 | struct ahd_devinfo devinfo; |
411 | int target_id, our_id, first; |
412 | u_int width; |
413 | int s; |
414 | char channel; |
415 | u_int ppr_options = 0, period, offset; |
416 | uint16_t old_autoneg; |
417 | |
418 | target_id = xm->xm_target; |
419 | our_id = chan->chan_id; |
420 | channel = 'A'; |
421 | s = splbio(); |
422 | tinfo = ahd_fetch_transinfo(ahd, channel, our_id, target_id, |
423 | &tstate); |
424 | ahd_compile_devinfo(&devinfo, our_id, target_id, |
425 | 0, channel, ROLE_INITIATOR); |
426 | |
427 | old_autoneg = tstate->auto_negotiate; |
428 | |
429 | /* |
430 | * XXX since the period and offset are not provided here, |
431 | * fake things by forcing a renegotiation using the user |
432 | * settings if this is called for the first time (i.e. |
433 | * during probe). Also, cap various values at the user |
434 | * values, assuming that the user set it up that way. |
435 | */ |
436 | if (ahd->inited_target[target_id] == 0) { |
437 | period = tinfo->user.period; |
438 | offset = tinfo->user.offset; |
439 | ppr_options = tinfo->user.ppr_options; |
440 | width = tinfo->user.width; |
441 | tstate->tagenable |= |
442 | (ahd->user_tagenable & devinfo.target_mask); |
443 | tstate->discenable |= |
444 | (ahd->user_discenable & devinfo.target_mask); |
445 | ahd->inited_target[target_id] = 1; |
446 | first = 1; |
447 | } else |
448 | first = 0; |
449 | |
450 | if (xm->xm_mode & (PERIPH_CAP_WIDE16 | PERIPH_CAP_DT)) |
451 | width = MSG_EXT_WDTR_BUS_16_BIT; |
452 | else |
453 | width = MSG_EXT_WDTR_BUS_8_BIT; |
454 | |
455 | ahd_validate_width(ahd, NULL, &width, ROLE_UNKNOWN); |
456 | if (width > tinfo->user.width) |
457 | width = tinfo->user.width; |
458 | ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); |
459 | |
460 | if (!(xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_DT))) { |
461 | period = 0; |
462 | offset = 0; |
463 | ppr_options = 0; |
464 | } |
465 | |
466 | if ((xm->xm_mode & PERIPH_CAP_DT) && |
467 | (tinfo->user.ppr_options & MSG_EXT_PPR_DT_REQ)) |
468 | ppr_options |= MSG_EXT_PPR_DT_REQ; |
469 | else |
470 | ppr_options &= ~MSG_EXT_PPR_DT_REQ; |
471 | |
472 | if ((tstate->discenable & devinfo.target_mask) == 0 || |
473 | (tstate->tagenable & devinfo.target_mask) == 0) |
474 | ppr_options &= ~MSG_EXT_PPR_IU_REQ; |
475 | |
476 | if ((xm->xm_mode & PERIPH_CAP_TQING) && |
477 | (ahd->user_tagenable & devinfo.target_mask)) |
478 | tstate->tagenable |= devinfo.target_mask; |
479 | else |
480 | tstate->tagenable &= ~devinfo.target_mask; |
481 | |
482 | ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX); |
483 | ahd_validate_offset(ahd, NULL, period, &offset, |
484 | MSG_EXT_WDTR_BUS_8_BIT, ROLE_UNKNOWN); |
485 | if (offset == 0) { |
486 | period = 0; |
487 | ppr_options = 0; |
488 | } |
489 | if (ppr_options != 0 |
490 | && tinfo->user.transport_version >= 3) { |
491 | tinfo->goal.transport_version = |
492 | tinfo->user.transport_version; |
493 | tinfo->curr.transport_version = |
494 | tinfo->user.transport_version; |
495 | } |
496 | |
497 | ahd_set_syncrate(ahd, &devinfo, period, offset, |
498 | ppr_options, AHD_TRANS_GOAL, FALSE); |
499 | |
500 | /* |
501 | * If this is the first request, and no negotiation is |
502 | * needed, just confirm the state to the scsipi layer, |
503 | * so that it can print a message. |
504 | */ |
505 | if (old_autoneg == tstate->auto_negotiate && first) { |
506 | xm->xm_mode = 0; |
507 | xm->xm_period = tinfo->curr.period; |
508 | xm->xm_offset = tinfo->curr.offset; |
509 | if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) |
510 | xm->xm_mode |= PERIPH_CAP_WIDE16; |
511 | if (tinfo->curr.period) |
512 | xm->xm_mode |= PERIPH_CAP_SYNC; |
513 | if (tstate->tagenable & devinfo.target_mask) |
514 | xm->xm_mode |= PERIPH_CAP_TQING; |
515 | if (tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ) |
516 | xm->xm_mode |= PERIPH_CAP_DT; |
517 | scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm); |
518 | } |
519 | splx(s); |
520 | } |
521 | } |
522 | |
523 | return; |
524 | } |
525 | |
526 | static void |
527 | ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments) |
528 | { |
529 | struct scb *scb; |
530 | struct scsipi_xfer *xs; |
531 | struct ahd_softc *ahd; |
532 | struct ahd_initiator_tinfo *tinfo; |
533 | struct ahd_tmode_tstate *tstate; |
534 | u_int mask; |
535 | int s; |
536 | |
537 | scb = arg; |
538 | xs = scb->xs; |
539 | xs->error = 0; |
540 | xs->status = 0; |
541 | xs->xs_status = 0; |
542 | ahd = device_private( |
543 | xs->xs_periph->periph_channel->chan_adapter->adapt_dev); |
544 | |
545 | scb->sg_count = 0; |
546 | if (nsegments != 0) { |
547 | void *sg; |
548 | int op; |
549 | u_int i; |
550 | |
551 | ahd_setup_data_scb(ahd, scb); |
552 | |
553 | /* Copy the segments into our SG list */ |
554 | for (i = nsegments, sg = scb->sg_list; i > 0; i--) { |
555 | |
556 | sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr, |
557 | dm_segs->ds_len, |
558 | /*last*/i == 1); |
559 | dm_segs++; |
560 | } |
561 | |
562 | if (xs->xs_control & XS_CTL_DATA_IN) |
563 | op = BUS_DMASYNC_PREREAD; |
564 | else |
565 | op = BUS_DMASYNC_PREWRITE; |
566 | |
567 | bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0, |
568 | scb->dmamap->dm_mapsize, op); |
569 | } |
570 | |
571 | ahd_lock(ahd, &s); |
572 | |
573 | /* |
574 | * Last time we need to check if this SCB needs to |
575 | * be aborted. |
576 | */ |
577 | if (ahd_get_scsi_status(scb) == XS_STS_DONE) { |
578 | if (nsegments != 0) |
579 | bus_dmamap_unload(ahd->parent_dmat, |
580 | scb->dmamap); |
581 | ahd_free_scb(ahd, scb); |
582 | ahd_unlock(ahd, &s); |
583 | return; |
584 | } |
585 | |
586 | tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid), |
587 | SCSIID_OUR_ID(scb->hscb->scsiid), |
588 | SCSIID_TARGET(ahd, scb->hscb->scsiid), |
589 | &tstate); |
590 | |
591 | mask = SCB_GET_TARGET_MASK(ahd, scb); |
592 | |
593 | if ((tstate->discenable & mask) != 0) |
594 | scb->hscb->control |= DISCENB; |
595 | |
596 | if ((tstate->tagenable & mask) != 0) |
597 | scb->hscb->control |= xs->xs_tag_type|TAG_ENB; |
598 | |
599 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU) != 0) { |
600 | scb->flags |= SCB_PACKETIZED; |
601 | if (scb->hscb->task_management != 0) |
602 | scb->hscb->control &= ~MK_MESSAGE; |
603 | } |
604 | |
605 | #if 0 /* This looks like it makes sense at first, but it can loop */ |
606 | if ((xs->xs_control & XS_CTL_DISCOVERY) && |
607 | (tinfo->goal.width != 0 |
608 | || tinfo->goal.period != 0 |
609 | || tinfo->goal.ppr_options != 0)) { |
610 | scb->flags |= SCB_NEGOTIATE; |
611 | scb->hscb->control |= MK_MESSAGE; |
612 | } else |
613 | #endif |
614 | if ((tstate->auto_negotiate & mask) != 0) { |
615 | scb->flags |= SCB_AUTO_NEGOTIATE; |
616 | scb->hscb->control |= MK_MESSAGE; |
617 | } |
618 | |
619 | LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); |
620 | |
621 | scb->flags |= SCB_ACTIVE; |
622 | |
623 | if (!(xs->xs_control & XS_CTL_POLL)) { |
624 | callout_reset(&scb->xs->xs_callout, xs->timeout > 1000000 ? |
625 | (xs->timeout / 1000) * hz : (xs->timeout * hz) / 1000, |
626 | ahd_timeout, scb); |
627 | } |
628 | |
629 | if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) { |
630 | /* Define a mapping from our tag to the SCB. */ |
631 | ahd->scb_data.scbindex[SCB_GET_TAG(scb)] = scb; |
632 | ahd_pause(ahd); |
633 | ahd_set_scbptr(ahd, SCB_GET_TAG(scb)); |
634 | ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG); |
635 | ahd_unpause(ahd); |
636 | } else { |
637 | ahd_queue_scb(ahd, scb); |
638 | } |
639 | |
640 | if (!(xs->xs_control & XS_CTL_POLL)) { |
641 | ahd_unlock(ahd, &s); |
642 | return; |
643 | } |
644 | /* |
645 | * If we can't use interrupts, poll for completion |
646 | */ |
647 | SC_DEBUG(xs->xs_periph, SCSIPI_DB3, ("cmd_poll\n" )); |
648 | do { |
649 | if (ahd_poll(ahd, xs->timeout)) { |
650 | if (!(xs->xs_control & XS_CTL_SILENT)) |
651 | printf("cmd fail\n" ); |
652 | ahd_timeout(scb); |
653 | break; |
654 | } |
655 | } while (!(xs->xs_status & XS_STS_DONE)); |
656 | |
657 | ahd_unlock(ahd, &s); |
658 | } |
659 | |
660 | static int |
661 | ahd_poll(struct ahd_softc *ahd, int wait) |
662 | { |
663 | |
664 | while (--wait) { |
665 | DELAY(1000); |
666 | if (ahd_inb(ahd, INTSTAT) & INT_PEND) |
667 | break; |
668 | } |
669 | |
670 | if (wait == 0) { |
671 | printf("%s: board is not responding\n" , ahd_name(ahd)); |
672 | return (EIO); |
673 | } |
674 | |
675 | ahd_intr(ahd); |
676 | return (0); |
677 | } |
678 | |
679 | |
680 | static void |
681 | ahd_setup_data(struct ahd_softc *ahd, struct scsipi_xfer *xs, |
682 | struct scb *scb) |
683 | { |
684 | struct hardware_scb *hscb; |
685 | |
686 | hscb = scb->hscb; |
687 | xs->resid = xs->status = 0; |
688 | |
689 | hscb->cdb_len = xs->cmdlen; |
690 | if (hscb->cdb_len > MAX_CDB_LEN) { |
691 | int s; |
692 | /* |
693 | * Should CAM start to support CDB sizes |
694 | * greater than 16 bytes, we could use |
695 | * the sense buffer to store the CDB. |
696 | */ |
697 | ahd_set_transaction_status(scb, |
698 | XS_DRIVER_STUFFUP); |
699 | |
700 | ahd_lock(ahd, &s); |
701 | ahd_free_scb(ahd, scb); |
702 | ahd_unlock(ahd, &s); |
703 | scsipi_done(xs); |
704 | } |
705 | memcpy(hscb->shared_data.idata.cdb, xs->cmd, hscb->cdb_len); |
706 | |
707 | /* Only use S/G if there is a transfer */ |
708 | if (xs->datalen) { |
709 | int error; |
710 | |
711 | error = bus_dmamap_load(ahd->parent_dmat, |
712 | scb->dmamap, xs->data, |
713 | xs->datalen, NULL, |
714 | ((xs->xs_control & XS_CTL_NOSLEEP) ? |
715 | BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | |
716 | BUS_DMA_STREAMING | |
717 | ((xs->xs_control & XS_CTL_DATA_IN) ? |
718 | BUS_DMA_READ : BUS_DMA_WRITE)); |
719 | if (error) { |
720 | #ifdef AHD_DEBUG |
721 | printf("%s: in ahd_setup_data(): bus_dmamap_load() " |
722 | "= %d\n" , |
723 | ahd_name(ahd), error); |
724 | #endif |
725 | xs->error = XS_RESOURCE_SHORTAGE; |
726 | scsipi_done(xs); |
727 | return; |
728 | } |
729 | ahd_execute_scb(scb, |
730 | scb->dmamap->dm_segs, |
731 | scb->dmamap->dm_nsegs); |
732 | } else { |
733 | ahd_execute_scb(scb, NULL, 0); |
734 | } |
735 | } |
736 | |
737 | void |
738 | ahd_timeout(void *arg) |
739 | { |
740 | struct scb *scb; |
741 | struct ahd_softc *ahd; |
742 | int s; |
743 | |
744 | scb = arg; |
745 | ahd = scb->ahd_softc; |
746 | |
747 | printf("%s: ahd_timeout\n" , ahd_name(ahd)); |
748 | |
749 | ahd_lock(ahd, &s); |
750 | |
751 | ahd_pause_and_flushwork(ahd); |
752 | (void)ahd_save_modes(ahd); |
753 | #if 0 |
754 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); |
755 | ahd_outb(ahd, SCSISIGO, ACKO); |
756 | printf("set ACK\n" ); |
757 | ahd_outb(ahd, SCSISIGO, 0); |
758 | printf("clearing Ack\n" ); |
759 | ahd_restore_modes(ahd, saved_modes); |
760 | #endif |
761 | if ((scb->flags & SCB_ACTIVE) == 0) { |
762 | /* Previous timeout took care of me already */ |
763 | printf("%s: Timedout SCB already complete. " |
764 | "Interrupts may not be functioning.\n" , ahd_name(ahd)); |
765 | ahd_unpause(ahd); |
766 | ahd_unlock(ahd, &s); |
767 | return; |
768 | } |
769 | |
770 | ahd_print_path(ahd, scb); |
771 | printf("SCB 0x%x - timed out\n" , SCB_GET_TAG(scb)); |
772 | ahd_dump_card_state(ahd); |
773 | ahd_reset_channel(ahd, SIM_CHANNEL(ahd, sim), |
774 | /*initiate reset*/TRUE); |
775 | ahd_unlock(ahd, &s); |
776 | return; |
777 | } |
778 | |
779 | int |
780 | ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) |
781 | { |
782 | ahd->platform_data = malloc(sizeof(struct ahd_platform_data), M_DEVBUF, |
783 | M_NOWAIT /*| M_ZERO*/); |
784 | if (ahd->platform_data == NULL) |
785 | return (ENOMEM); |
786 | |
787 | memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); |
788 | |
789 | return (0); |
790 | } |
791 | |
792 | void |
793 | ahd_platform_free(struct ahd_softc *ahd) |
794 | { |
795 | free(ahd->platform_data, M_DEVBUF); |
796 | } |
797 | |
798 | int |
799 | ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd) |
800 | { |
801 | /* We don't sort softcs under NetBSD so report equal always */ |
802 | return (0); |
803 | } |
804 | |
805 | int |
806 | ahd_detach(struct ahd_softc *ahd, int flags) |
807 | { |
808 | int rv = 0; |
809 | |
810 | if (ahd->sc_child != NULL) |
811 | rv = config_detach(ahd->sc_child, flags); |
812 | |
813 | pmf_device_deregister(ahd->sc_dev); |
814 | |
815 | ahd_free(ahd); |
816 | |
817 | return rv; |
818 | } |
819 | |
820 | void |
821 | ahd_platform_set_tags(struct ahd_softc *ahd, |
822 | struct ahd_devinfo *devinfo, ahd_queue_alg alg) |
823 | { |
824 | struct ahd_tmode_tstate *tstate; |
825 | |
826 | ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid, |
827 | devinfo->target, &tstate); |
828 | |
829 | if (alg != AHD_QUEUE_NONE) |
830 | tstate->tagenable |= devinfo->target_mask; |
831 | else |
832 | tstate->tagenable &= ~devinfo->target_mask; |
833 | } |
834 | |
835 | void |
836 | ahd_send_async(struct ahd_softc *ahd, char channel, u_int target, u_int lun, |
837 | ac_code code, void *opt_arg) |
838 | { |
839 | struct ahd_tmode_tstate *tstate; |
840 | struct ahd_initiator_tinfo *tinfo; |
841 | struct ahd_devinfo devinfo; |
842 | struct scsipi_channel *chan; |
843 | struct scsipi_xfer_mode xm; |
844 | |
845 | #ifdef DIAGNOSTIC |
846 | if (channel != 'A') |
847 | panic("ahd_send_async: not channel A" ); |
848 | #endif |
849 | chan = &ahd->sc_channel; |
850 | switch (code) { |
851 | case AC_TRANSFER_NEG: |
852 | tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, target, |
853 | &tstate); |
854 | ahd_compile_devinfo(&devinfo, ahd->our_id, target, lun, |
855 | channel, ROLE_UNKNOWN); |
856 | /* |
857 | * Don't bother if negotiating. XXX? |
858 | */ |
859 | if (tinfo->curr.period != tinfo->goal.period |
860 | || tinfo->curr.width != tinfo->goal.width |
861 | || tinfo->curr.offset != tinfo->goal.offset |
862 | || tinfo->curr.ppr_options != tinfo->goal.ppr_options) |
863 | break; |
864 | xm.xm_target = target; |
865 | xm.xm_mode = 0; |
866 | xm.xm_period = tinfo->curr.period; |
867 | xm.xm_offset = tinfo->curr.offset; |
868 | if (tinfo->goal.ppr_options & MSG_EXT_PPR_DT_REQ) |
869 | xm.xm_mode |= PERIPH_CAP_DT; |
870 | if (tinfo->curr.width == MSG_EXT_WDTR_BUS_16_BIT) |
871 | xm.xm_mode |= PERIPH_CAP_WIDE16; |
872 | if (tinfo->curr.period) |
873 | xm.xm_mode |= PERIPH_CAP_SYNC; |
874 | if (tstate->tagenable & devinfo.target_mask) |
875 | xm.xm_mode |= PERIPH_CAP_TQING; |
876 | scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, &xm); |
877 | break; |
878 | case AC_BUS_RESET: |
879 | scsipi_async_event(chan, ASYNC_EVENT_RESET, NULL); |
880 | case AC_SENT_BDR: |
881 | default: |
882 | break; |
883 | } |
884 | } |
885 | |