FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/adv.c
1 /* $NetBSD: adv.c,v 1.33 2003/05/03 18:11:11 wiz Exp $ */
2
3 /*
4 * Generic driver for the Advanced Systems Inc. Narrow SCSI controllers
5 *
6 * Copyright (c) 1998 The NetBSD Foundation, Inc.
7 * All rights reserved.
8 *
9 * Author: Baldassare Dante Profeta <dante@mclink.it>
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the NetBSD
22 * Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 * contributors may be used to endorse or promote products derived
25 * from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40 #include <sys/cdefs.h>
41 __KERNEL_RCSID(0, "$NetBSD: adv.c,v 1.33 2003/05/03 18:11:11 wiz Exp $");
42
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/callout.h>
46 #include <sys/kernel.h>
47 #include <sys/errno.h>
48 #include <sys/ioctl.h>
49 #include <sys/device.h>
50 #include <sys/malloc.h>
51 #include <sys/buf.h>
52 #include <sys/proc.h>
53 #include <sys/user.h>
54
55 #include <machine/bus.h>
56 #include <machine/intr.h>
57
58 #include <uvm/uvm_extern.h>
59
60 #include <dev/scsipi/scsi_all.h>
61 #include <dev/scsipi/scsipi_all.h>
62 #include <dev/scsipi/scsiconf.h>
63
64 #include <dev/ic/advlib.h>
65 #include <dev/ic/adv.h>
66
67 #ifndef DDB
68 #define Debugger() panic("should call debugger here (adv.c)")
69 #endif /* ! DDB */
70
71
72 /* #define ASC_DEBUG */
73
74 /******************************************************************************/
75
76
77 static int adv_alloc_control_data __P((ASC_SOFTC *));
78 static void adv_free_control_data __P((ASC_SOFTC *));
79 static int adv_create_ccbs __P((ASC_SOFTC *, ADV_CCB *, int));
80 static void adv_free_ccb __P((ASC_SOFTC *, ADV_CCB *));
81 static void adv_reset_ccb __P((ADV_CCB *));
82 static int adv_init_ccb __P((ASC_SOFTC *, ADV_CCB *));
83 static ADV_CCB *adv_get_ccb __P((ASC_SOFTC *));
84 static void adv_queue_ccb __P((ASC_SOFTC *, ADV_CCB *));
85 static void adv_start_ccbs __P((ASC_SOFTC *));
86
87
88 static void adv_scsipi_request __P((struct scsipi_channel *,
89 scsipi_adapter_req_t, void *));
90 static void advminphys __P((struct buf *));
91 static void adv_narrow_isr_callback __P((ASC_SOFTC *, ASC_QDONE_INFO *));
92
93 static int adv_poll __P((ASC_SOFTC *, struct scsipi_xfer *, int));
94 static void adv_timeout __P((void *));
95 static void adv_watchdog __P((void *));
96
97
98 /******************************************************************************/
99
100 #define ADV_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */
101 #define ADV_WATCH_TIMEOUT 1000 /* time to wait for watchdog (mSec) */
102
103 /******************************************************************************/
104 /* Control Blocks routines */
105 /******************************************************************************/
106
107
108 static int
109 adv_alloc_control_data(sc)
110 ASC_SOFTC *sc;
111 {
112 int error;
113
114 /*
115 * Allocate the control blocks.
116 */
117 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct adv_control),
118 PAGE_SIZE, 0, &sc->sc_control_seg, 1,
119 &sc->sc_control_nsegs, BUS_DMA_NOWAIT)) != 0) {
120 printf("%s: unable to allocate control structures,"
121 " error = %d\n", sc->sc_dev.dv_xname, error);
122 return (error);
123 }
124 if ((error = bus_dmamem_map(sc->sc_dmat, &sc->sc_control_seg,
125 sc->sc_control_nsegs, sizeof(struct adv_control),
126 (caddr_t *) & sc->sc_control,
127 BUS_DMA_NOWAIT | BUS_DMA_COHERENT)) != 0) {
128 printf("%s: unable to map control structures, error = %d\n",
129 sc->sc_dev.dv_xname, error);
130 return (error);
131 }
132 /*
133 * Create and load the DMA map used for the control blocks.
134 */
135 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct adv_control),
136 1, sizeof(struct adv_control), 0, BUS_DMA_NOWAIT,
137 &sc->sc_dmamap_control)) != 0) {
138 printf("%s: unable to create control DMA map, error = %d\n",
139 sc->sc_dev.dv_xname, error);
140 return (error);
141 }
142 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control,
143 sc->sc_control, sizeof(struct adv_control), NULL,
144 BUS_DMA_NOWAIT)) != 0) {
145 printf("%s: unable to load control DMA map, error = %d\n",
146 sc->sc_dev.dv_xname, error);
147 return (error);
148 }
149
150 /*
151 * Initialize the overrun_buf address.
152 */
153 sc->overrun_buf = sc->sc_dmamap_control->dm_segs[0].ds_addr +
154 offsetof(struct adv_control, overrun_buf);
155
156 return (0);
157 }
158
159 static void
160 adv_free_control_data(sc)
161 ASC_SOFTC *sc;
162 {
163
164 bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_control);
165 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmamap_control);
166 sc->sc_dmamap_control = NULL;
167
168 bus_dmamem_unmap(sc->sc_dmat, (caddr_t) sc->sc_control,
169 sizeof(struct adv_control));
170 bus_dmamem_free(sc->sc_dmat, &sc->sc_control_seg,
171 sc->sc_control_nsegs);
172 }
173
174 /*
175 * Create a set of ccbs and add them to the free list. Called once
176 * by adv_init(). We return the number of CCBs successfully created.
177 */
178 static int
179 adv_create_ccbs(sc, ccbstore, count)
180 ASC_SOFTC *sc;
181 ADV_CCB *ccbstore;
182 int count;
183 {
184 ADV_CCB *ccb;
185 int i, error;
186
187 memset(ccbstore, 0, sizeof(ADV_CCB) * count);
188 for (i = 0; i < count; i++) {
189 ccb = &ccbstore[i];
190 if ((error = adv_init_ccb(sc, ccb)) != 0) {
191 printf("%s: unable to initialize ccb, error = %d\n",
192 sc->sc_dev.dv_xname, error);
193 return (i);
194 }
195 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain);
196 }
197
198 return (i);
199 }
200
201
202 /*
203 * A ccb is put onto the free list.
204 */
205 static void
206 adv_free_ccb(sc, ccb)
207 ASC_SOFTC *sc;
208 ADV_CCB *ccb;
209 {
210 int s;
211
212 s = splbio();
213 adv_reset_ccb(ccb);
214 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain);
215 splx(s);
216 }
217
218
219 static void
220 adv_reset_ccb(ccb)
221 ADV_CCB *ccb;
222 {
223
224 ccb->flags = 0;
225 }
226
227
228 static int
229 adv_init_ccb(sc, ccb)
230 ASC_SOFTC *sc;
231 ADV_CCB *ccb;
232 {
233 int hashnum, error;
234
235 callout_init(&ccb->ccb_watchdog);
236
237 /*
238 * Create the DMA map for this CCB.
239 */
240 error = bus_dmamap_create(sc->sc_dmat,
241 (ASC_MAX_SG_LIST - 1) * PAGE_SIZE,
242 ASC_MAX_SG_LIST, (ASC_MAX_SG_LIST - 1) * PAGE_SIZE,
243 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer);
244 if (error) {
245 printf("%s: unable to create DMA map, error = %d\n",
246 sc->sc_dev.dv_xname, error);
247 return (error);
248 }
249
250 /*
251 * put in the phystokv hash table
252 * Never gets taken out.
253 */
254 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr +
255 ADV_CCB_OFF(ccb);
256 hashnum = CCB_HASH(ccb->hashkey);
257 ccb->nexthash = sc->sc_ccbhash[hashnum];
258 sc->sc_ccbhash[hashnum] = ccb;
259
260 adv_reset_ccb(ccb);
261 return (0);
262 }
263
264
265 /*
266 * Get a free ccb
267 *
268 * If there are none, see if we can allocate a new one
269 */
270 static ADV_CCB *
271 adv_get_ccb(sc)
272 ASC_SOFTC *sc;
273 {
274 ADV_CCB *ccb = 0;
275 int s;
276
277 s = splbio();
278 ccb = TAILQ_FIRST(&sc->sc_free_ccb);
279 if (ccb != NULL) {
280 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain);
281 ccb->flags |= CCB_ALLOC;
282 }
283 splx(s);
284 return (ccb);
285 }
286
287
288 /*
289 * Given a physical address, find the ccb that it corresponds to.
290 */
291 ADV_CCB *
292 adv_ccb_phys_kv(sc, ccb_phys)
293 ASC_SOFTC *sc;
294 u_long ccb_phys;
295 {
296 int hashnum = CCB_HASH(ccb_phys);
297 ADV_CCB *ccb = sc->sc_ccbhash[hashnum];
298
299 while (ccb) {
300 if (ccb->hashkey == ccb_phys)
301 break;
302 ccb = ccb->nexthash;
303 }
304 return (ccb);
305 }
306
307
308 /*
309 * Queue a CCB to be sent to the controller, and send it if possible.
310 */
311 static void
312 adv_queue_ccb(sc, ccb)
313 ASC_SOFTC *sc;
314 ADV_CCB *ccb;
315 {
316
317 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain);
318
319 adv_start_ccbs(sc);
320 }
321
322
323 static void
324 adv_start_ccbs(sc)
325 ASC_SOFTC *sc;
326 {
327 ADV_CCB *ccb;
328
329 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) {
330 if (ccb->flags & CCB_WATCHDOG)
331 callout_stop(&ccb->ccb_watchdog);
332
333 if (AscExeScsiQueue(sc, &ccb->scsiq) == ASC_BUSY) {
334 ccb->flags |= CCB_WATCHDOG;
335 callout_reset(&ccb->ccb_watchdog,
336 (ADV_WATCH_TIMEOUT * hz) / 1000,
337 adv_watchdog, ccb);
338 break;
339 }
340 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain);
341
342 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0)
343 callout_reset(&ccb->xs->xs_callout,
344 mstohz(ccb->timeout), adv_timeout, ccb);
345 }
346 }
347
348
349 /******************************************************************************/
350 /* SCSI layer interfacing routines */
351 /******************************************************************************/
352
353
354 int
355 adv_init(sc)
356 ASC_SOFTC *sc;
357 {
358 int warn;
359
360 if (!AscFindSignature(sc->sc_iot, sc->sc_ioh)) {
361 aprint_error("adv_init: failed to find signature\n");
362 return (1);
363 }
364
365 /*
366 * Read the board configuration
367 */
368 AscInitASC_SOFTC(sc);
369 warn = AscInitFromEEP(sc);
370 if (warn) {
371 aprint_error("%s -get: ", sc->sc_dev.dv_xname);
372 switch (warn) {
373 case -1:
374 aprint_normal("Chip is not halted\n");
375 break;
376
377 case -2:
378 aprint_normal("Couldn't get MicroCode Start"
379 " address\n");
380 break;
381
382 case ASC_WARN_IO_PORT_ROTATE:
383 aprint_normal("I/O port address modified\n");
384 break;
385
386 case ASC_WARN_AUTO_CONFIG:
387 aprint_normal("I/O port increment switch enabled\n");
388 break;
389
390 case ASC_WARN_EEPROM_CHKSUM:
391 aprint_normal("EEPROM checksum error\n");
392 break;
393
394 case ASC_WARN_IRQ_MODIFIED:
395 aprint_normal("IRQ modified\n");
396 break;
397
398 case ASC_WARN_CMD_QNG_CONFLICT:
399 aprint_normal("tag queuing enabled w/o disconnects\n");
400 break;
401
402 default:
403 aprint_normal("unknown warning %d\n", warn);
404 }
405 }
406 if (sc->scsi_reset_wait > ASC_MAX_SCSI_RESET_WAIT)
407 sc->scsi_reset_wait = ASC_MAX_SCSI_RESET_WAIT;
408
409 /*
410 * Modify the board configuration
411 */
412 warn = AscInitFromASC_SOFTC(sc);
413 if (warn) {
414 aprint_error("%s -set: ", sc->sc_dev.dv_xname);
415 switch (warn) {
416 case ASC_WARN_CMD_QNG_CONFLICT:
417 aprint_normal("tag queuing enabled w/o disconnects\n");
418 break;
419
420 case ASC_WARN_AUTO_CONFIG:
421 aprint_normal("I/O port increment switch enabled\n");
422 break;
423
424 default:
425 aprint_normal("unknown warning %d\n", warn);
426 }
427 }
428 sc->isr_callback = (ASC_CALLBACK) adv_narrow_isr_callback;
429
430 return (0);
431 }
432
433
434 void
435 adv_attach(sc)
436 ASC_SOFTC *sc;
437 {
438 struct scsipi_adapter *adapt = &sc->sc_adapter;
439 struct scsipi_channel *chan = &sc->sc_channel;
440 int i, error;
441
442 /*
443 * Initialize board RISC chip and enable interrupts.
444 */
445 switch (AscInitDriver(sc)) {
446 case 0:
447 /* AllOK */
448 break;
449
450 case 1:
451 panic("%s: bad signature", sc->sc_dev.dv_xname);
452 break;
453
454 case 2:
455 panic("%s: unable to load MicroCode",
456 sc->sc_dev.dv_xname);
457 break;
458
459 case 3:
460 panic("%s: unable to initialize MicroCode",
461 sc->sc_dev.dv_xname);
462 break;
463
464 default:
465 panic("%s: unable to initialize board RISC chip",
466 sc->sc_dev.dv_xname);
467 }
468
469 /*
470 * Fill in the scsipi_adapter.
471 */
472 memset(adapt, 0, sizeof(*adapt));
473 adapt->adapt_dev = &sc->sc_dev;
474 adapt->adapt_nchannels = 1;
475 /* adapt_openings initialized below */
476 /* adapt_max_periph initialized below */
477 adapt->adapt_request = adv_scsipi_request;
478 adapt->adapt_minphys = advminphys;
479
480 /*
481 * Fill in the scsipi_channel.
482 */
483 memset(chan, 0, sizeof(*chan));
484 chan->chan_adapter = adapt;
485 chan->chan_bustype = &scsi_bustype;
486 chan->chan_channel = 0;
487 chan->chan_ntargets = 8;
488 chan->chan_nluns = 8;
489 chan->chan_id = sc->chip_scsi_id;
490
491 TAILQ_INIT(&sc->sc_free_ccb);
492 TAILQ_INIT(&sc->sc_waiting_ccb);
493
494 /*
495 * Allocate the Control Blocks and the overrun buffer.
496 */
497 error = adv_alloc_control_data(sc);
498 if (error)
499 return; /* (error) */
500
501 /*
502 * Create and initialize the Control Blocks.
503 */
504 i = adv_create_ccbs(sc, sc->sc_control->ccbs, ADV_MAX_CCB);
505 if (i == 0) {
506 aprint_error("%s: unable to create control blocks\n",
507 sc->sc_dev.dv_xname);
508 return; /* (ENOMEM) */ ;
509 } else if (i != ADV_MAX_CCB) {
510 aprint_error(
511 "%s: WARNING: only %d of %d control blocks created\n",
512 sc->sc_dev.dv_xname, i, ADV_MAX_CCB);
513 }
514
515 adapt->adapt_openings = i;
516 adapt->adapt_max_periph = adapt->adapt_openings;
517
518 sc->sc_child = config_found(&sc->sc_dev, chan, scsiprint);
519 }
520
521 int
522 adv_detach(sc, flags)
523 ASC_SOFTC *sc;
524 int flags;
525 {
526 int rv = 0;
527
528 if (sc->sc_child != NULL)
529 rv = config_detach(sc->sc_child, flags);
530
531 adv_free_control_data(sc);
532
533 return (rv);
534 }
535
536 static void
537 advminphys(bp)
538 struct buf *bp;
539 {
540
541 if (bp->b_bcount > ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE))
542 bp->b_bcount = ((ASC_MAX_SG_LIST - 1) * PAGE_SIZE);
543 minphys(bp);
544 }
545
546
547 /*
548 * start a scsi operation given the command and the data address. Also needs
549 * the unit, target and lu.
550 */
551
552 static void
553 adv_scsipi_request(chan, req, arg)
554 struct scsipi_channel *chan;
555 scsipi_adapter_req_t req;
556 void *arg;
557 {
558 struct scsipi_xfer *xs;
559 struct scsipi_periph *periph;
560 ASC_SOFTC *sc = (void *)chan->chan_adapter->adapt_dev;
561 bus_dma_tag_t dmat = sc->sc_dmat;
562 ADV_CCB *ccb;
563 int s, flags, error, nsegs;
564
565 switch (req) {
566 case ADAPTER_REQ_RUN_XFER:
567 xs = arg;
568 periph = xs->xs_periph;
569 flags = xs->xs_control;
570
571 /*
572 * Get a CCB to use.
573 */
574 ccb = adv_get_ccb(sc);
575 #ifdef DIAGNOSTIC
576 /*
577 * This should never happen as we track the resources
578 * in the mid-layer.
579 */
580 if (ccb == NULL) {
581 scsipi_printaddr(periph);
582 printf("unable to allocate ccb\n");
583 panic("adv_scsipi_request");
584 }
585 #endif
586
587 ccb->xs = xs;
588 ccb->timeout = xs->timeout;
589
590 /*
591 * Build up the request
592 */
593 memset(&ccb->scsiq, 0, sizeof(ASC_SCSI_Q));
594
595 ccb->scsiq.q2.ccb_ptr =
596 sc->sc_dmamap_control->dm_segs[0].ds_addr +
597 ADV_CCB_OFF(ccb);
598
599 ccb->scsiq.cdbptr = &xs->cmd->opcode;
600 ccb->scsiq.q2.cdb_len = xs->cmdlen;
601 ccb->scsiq.q1.target_id =
602 ASC_TID_TO_TARGET_ID(periph->periph_target);
603 ccb->scsiq.q1.target_lun = periph->periph_lun;
604 ccb->scsiq.q2.target_ix =
605 ASC_TIDLUN_TO_IX(periph->periph_target,
606 periph->periph_lun);
607 ccb->scsiq.q1.sense_addr =
608 sc->sc_dmamap_control->dm_segs[0].ds_addr +
609 ADV_CCB_OFF(ccb) + offsetof(struct adv_ccb, scsi_sense);
610 ccb->scsiq.q1.sense_len = sizeof(struct scsipi_sense_data);
611
612 /*
613 * If there are any outstanding requests for the current
614 * target, then every 255th request send an ORDERED request.
615 * This heuristic tries to retain the benefit of request
616 * sorting while preventing request starvation. 255 is the
617 * max number of tags or pending commands a device may have
618 * outstanding.
619 */
620 sc->reqcnt[periph->periph_target]++;
621 if (((sc->reqcnt[periph->periph_target] > 0) &&
622 (sc->reqcnt[periph->periph_target] % 255) == 0) ||
623 xs->bp == NULL || (xs->bp->b_flags & B_ASYNC) == 0) {
624 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_ORDERED;
625 } else {
626 ccb->scsiq.q2.tag_code = M2_QTAG_MSG_SIMPLE;
627 }
628
629 if (xs->datalen) {
630 /*
631 * Map the DMA transfer.
632 */
633 #ifdef TFS
634 if (flags & SCSI_DATA_UIO) {
635 error = bus_dmamap_load_uio(dmat,
636 ccb->dmamap_xfer, (struct uio *) xs->data,
637 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT :
638 BUS_DMA_WAITOK) | BUS_DMA_STREAMING |
639 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ :
640 BUS_DMA_WRITE));
641 } else
642 #endif /* TFS */
643 {
644 error = bus_dmamap_load(dmat, ccb->dmamap_xfer,
645 xs->data, xs->datalen, NULL,
646 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT :
647 BUS_DMA_WAITOK) | BUS_DMA_STREAMING |
648 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ :
649 BUS_DMA_WRITE));
650 }
651
652 switch (error) {
653 case 0:
654 break;
655
656
657 case ENOMEM:
658 case EAGAIN:
659 xs->error = XS_RESOURCE_SHORTAGE;
660 goto out_bad;
661
662 default:
663 xs->error = XS_DRIVER_STUFFUP;
664 if (error == EFBIG) {
665 printf("%s: adv_scsi_cmd, more than %d"
666 " DMA segments\n",
667 sc->sc_dev.dv_xname,
668 ASC_MAX_SG_LIST);
669 } else {
670 printf("%s: adv_scsi_cmd, error %d"
671 " loading DMA map\n",
672 sc->sc_dev.dv_xname, error);
673 }
674
675 out_bad:
676 adv_free_ccb(sc, ccb);
677 scsipi_done(xs);
678 return;
679 }
680 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0,
681 ccb->dmamap_xfer->dm_mapsize,
682 (flags & XS_CTL_DATA_IN) ?
683 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
684
685 memset(&ccb->sghead, 0, sizeof(ASC_SG_HEAD));
686
687 for (nsegs = 0;
688 nsegs < ccb->dmamap_xfer->dm_nsegs; nsegs++) {
689 ccb->sghead.sg_list[nsegs].addr =
690 ccb->dmamap_xfer->dm_segs[nsegs].ds_addr;
691 ccb->sghead.sg_list[nsegs].bytes =
692 ccb->dmamap_xfer->dm_segs[nsegs].ds_len;
693 }
694
695 ccb->sghead.entry_cnt = ccb->scsiq.q1.sg_queue_cnt =
696 ccb->dmamap_xfer->dm_nsegs;
697
698 ccb->scsiq.q1.cntl |= ASC_QC_SG_HEAD;
699 ccb->scsiq.sg_head = &ccb->sghead;
700 ccb->scsiq.q1.data_addr = 0;
701 ccb->scsiq.q1.data_cnt = 0;
702 } else {
703 /*
704 * No data xfer, use non S/G values.
705 */
706 ccb->scsiq.q1.data_addr = 0;
707 ccb->scsiq.q1.data_cnt = 0;
708 }
709
710 #ifdef ASC_DEBUG
711 printf("id = 0, lun = 0, cmd = 0, ccb = 0x0 \n",
712 periph->periph_target,
713 periph->periph_lun, xs->cmd->opcode,
714 (unsigned long)ccb);
715 #endif
716 s = splbio();
717 adv_queue_ccb(sc, ccb);
718 splx(s);
719
720 if ((flags & XS_CTL_POLL) == 0)
721 return;
722
723 /* Not allowed to use interrupts, poll for completion. */
724 if (adv_poll(sc, xs, ccb->timeout)) {
725 adv_timeout(ccb);
726 if (adv_poll(sc, xs, ccb->timeout))
727 adv_timeout(ccb);
728 }
729 return;
730
731 case ADAPTER_REQ_GROW_RESOURCES:
732 /* XXX Not supported. */
733 return;
734
735 case ADAPTER_REQ_SET_XFER_MODE:
736 {
737 /*
738 * We can't really set the mode, but we know how to
739 * query what the firmware negotiated.
740 */
741 struct scsipi_xfer_mode *xm = arg;
742 u_int8_t sdtr_data;
743 ASC_SCSI_BIT_ID_TYPE tid_bit;
744
745 tid_bit = ASC_TIX_TO_TARGET_ID(xm->xm_target);
746
747 xm->xm_mode = 0;
748 xm->xm_period = 0;
749 xm->xm_offset = 0;
750
751 if (sc->init_sdtr & tid_bit) {
752 xm->xm_mode |= PERIPH_CAP_SYNC;
753 sdtr_data = sc->sdtr_data[xm->xm_target];
754 xm->xm_period =
755 sc->sdtr_period_tbl[(sdtr_data >> 4) &
756 (sc->max_sdtr_index - 1)];
757 xm->xm_offset = sdtr_data & ASC_SYN_MAX_OFFSET;
758 }
759
760 if (sc->use_tagged_qng & tid_bit)
761 xm->xm_mode |= PERIPH_CAP_TQING;
762
763 scsipi_async_event(chan, ASYNC_EVENT_XFER_MODE, xm);
764 return;
765 }
766 }
767 }
768
769 int
770 adv_intr(arg)
771 void *arg;
772 {
773 ASC_SOFTC *sc = arg;
774
775 #ifdef ASC_DEBUG
776 int int_pend = FALSE;
777
778 if(ASC_IS_INT_PENDING(sc->sc_iot, sc->sc_ioh))
779 {
780 int_pend = TRUE;
781 printf("ISR - ");
782 }
783 #endif
784 AscISR(sc);
785 #ifdef ASC_DEBUG
786 if(int_pend)
787 printf("\n");
788 #endif
789
790 return (1);
791 }
792
793
794 /*
795 * Poll a particular unit, looking for a particular xs
796 */
797 static int
798 adv_poll(sc, xs, count)
799 ASC_SOFTC *sc;
800 struct scsipi_xfer *xs;
801 int count;
802 {
803
804 /* timeouts are in msec, so we loop in 1000 usec cycles */
805 while (count) {
806 adv_intr(sc);
807 if (xs->xs_status & XS_STS_DONE)
808 return (0);
809 delay(1000); /* only happens in boot so ok */
810 count--;
811 }
812 return (1);
813 }
814
815
816 static void
817 adv_timeout(arg)
818 void *arg;
819 {
820 ADV_CCB *ccb = arg;
821 struct scsipi_xfer *xs = ccb->xs;
822 struct scsipi_periph *periph = xs->xs_periph;
823 ASC_SOFTC *sc =
824 (void *)periph->periph_channel->chan_adapter->adapt_dev;
825 int s;
826
827 scsipi_printaddr(periph);
828 printf("timed out");
829
830 s = splbio();
831
832 /*
833 * If it has been through before, then a previous abort has failed,
834 * don't try abort again, reset the bus instead.
835 */
836 if (ccb->flags & CCB_ABORT) {
837 /* abort timed out */
838 printf(" AGAIN. Resetting Bus\n");
839 /* Lets try resetting the bus! */
840 if (AscResetBus(sc) == ASC_ERROR) {
841 ccb->timeout = sc->scsi_reset_wait;
842 adv_queue_ccb(sc, ccb);
843 }
844 } else {
845 /* abort the operation that has timed out */
846 printf("\n");
847 AscAbortCCB(sc, ccb);
848 ccb->xs->error = XS_TIMEOUT;
849 ccb->timeout = ADV_ABORT_TIMEOUT;
850 ccb->flags |= CCB_ABORT;
851 adv_queue_ccb(sc, ccb);
852 }
853
854 splx(s);
855 }
856
857
858 static void
859 adv_watchdog(arg)
860 void *arg;
861 {
862 ADV_CCB *ccb = arg;
863 struct scsipi_xfer *xs = ccb->xs;
864 struct scsipi_periph *periph = xs->xs_periph;
865 ASC_SOFTC *sc =
866 (void *)periph->periph_channel->chan_adapter->adapt_dev;
867 int s;
868
869 s = splbio();
870
871 ccb->flags &= ~CCB_WATCHDOG;
872 adv_start_ccbs(sc);
873
874 splx(s);
875 }
876
877
878 /******************************************************************************/
879 /* NARROW boards Interrupt callbacks */
880 /******************************************************************************/
881
882
883 /*
884 * adv_narrow_isr_callback() - Second Level Interrupt Handler called by AscISR()
885 *
886 * Interrupt callback function for the Narrow SCSI Asc Library.
887 */
888 static void
889 adv_narrow_isr_callback(sc, qdonep)
890 ASC_SOFTC *sc;
891 ASC_QDONE_INFO *qdonep;
892 {
893 bus_dma_tag_t dmat = sc->sc_dmat;
894 ADV_CCB *ccb;
895 struct scsipi_xfer *xs;
896 struct scsipi_sense_data *s1, *s2;
897
898
899 ccb = adv_ccb_phys_kv(sc, qdonep->d2.ccb_ptr);
900 xs = ccb->xs;
901
902 #ifdef ASC_DEBUG
903 printf(" - ccb=0x%lx, id=%d, lun=%d, cmd=%d, ",
904 (unsigned long)ccb,
905 xs->xs_periph->periph_target,
906 xs->xs_periph->periph_lun, xs->cmd->opcode);
907 #endif
908 callout_stop(&ccb->xs->xs_callout);
909
910 /*
911 * If we were a data transfer, unload the map that described
912 * the data buffer.
913 */
914 if (xs->datalen) {
915 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0,
916 ccb->dmamap_xfer->dm_mapsize,
917 (xs->xs_control & XS_CTL_DATA_IN) ?
918 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
919 bus_dmamap_unload(dmat, ccb->dmamap_xfer);
920 }
921 if ((ccb->flags & CCB_ALLOC) == 0) {
922 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname);
923 Debugger();
924 return;
925 }
926 /*
927 * 'qdonep' contains the command's ending status.
928 */
929 #ifdef ASC_DEBUG
930 printf("d_s=%d, h_s=%d", qdonep->d3.done_stat, qdonep->d3.host_stat);
931 #endif
932 switch (qdonep->d3.done_stat) {
933 case ASC_QD_NO_ERROR:
934 switch (qdonep->d3.host_stat) {
935 case ASC_QHSTA_NO_ERROR:
936 xs->error = XS_NOERROR;
937 xs->resid = 0;
938 break;
939
940 default:
941 /* QHSTA error occurred */
942 xs->error = XS_DRIVER_STUFFUP;
943 break;
944 }
945
946 /*
947 * If an INQUIRY command completed successfully, then call
948 * the AscInquiryHandling() function to patch bugged boards.
949 */
950 if ((xs->cmd->opcode == SCSICMD_Inquiry) &&
951 (xs->xs_periph->periph_lun == 0) &&
952 (xs->datalen - qdonep->remain_bytes) >= 8) {
953 AscInquiryHandling(sc,
954 xs->xs_periph->periph_target & 0x7,
955 (ASC_SCSI_INQUIRY *) xs->data);
956 }
957 break;
958
959 case ASC_QD_WITH_ERROR:
960 switch (qdonep->d3.host_stat) {
961 case ASC_QHSTA_NO_ERROR:
962 if (qdonep->d3.scsi_stat == SS_CHK_CONDITION) {
963 s1 = &ccb->scsi_sense;
964 s2 = &xs->sense.scsi_sense;
965 *s2 = *s1;
966 xs->error = XS_SENSE;
967 } else {
968 xs->error = XS_DRIVER_STUFFUP;
969 }
970 break;
971
972 case ASC_QHSTA_M_SEL_TIMEOUT:
973 xs->error = XS_SELTIMEOUT;
974 break;
975
976 default:
977 /* QHSTA error occurred */
978 xs->error = XS_DRIVER_STUFFUP;
979 break;
980 }
981 break;
982
983 case ASC_QD_ABORTED_BY_HOST:
984 default:
985 xs->error = XS_DRIVER_STUFFUP;
986 break;
987 }
988
989
990 adv_free_ccb(sc, ccb);
991 scsipi_done(xs);
992 }
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