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Expand PMF_FN_* macros.
[netbsd-mini2440.git] / sys / arch / amiga / dev / siop2.c
blob1eae4b324af1494c85eca01b23c34725842758a6
1 /* $NetBSD: siop2.c,v 1.35 2009/03/18 17:06:42 cegger Exp $ */
2
3 /*
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Van Jacobson of Lawrence Berkeley Laboratory.
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 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR 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 * @(#)siop.c 7.5 (Berkeley) 5/4/91
35 */
36
37 /*
38 * Copyright (c) 1994,1998 Michael L. Hitch
39 *
40 * This code is derived from software contributed to Berkeley by
41 * Van Jacobson of Lawrence Berkeley Laboratory.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
53 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
54 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
55 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
56 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
57 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
61 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *
63 * @(#)siop.c 7.5 (Berkeley) 5/4/91
64 */
65
66 /*
67 * AMIGA 53C720/770 scsi adaptor driver
68 */
69
70 #include "opt_ddb.h"
71
72 #include <sys/cdefs.h>
73 __KERNEL_RCSID(0, "$NetBSD: siop2.c,v 1.35 2009/03/18 17:06:42 cegger Exp $");
74
75 #include <sys/param.h>
76 #include <sys/systm.h>
77 #include <sys/callout.h>
78 #include <sys/kernel.h>
79 #include <sys/device.h>
80 #include <sys/disklabel.h>
81 #include <sys/buf.h>
82 #include <sys/malloc.h>
83
84 #include <uvm/uvm_extern.h>
85
86 #include <dev/scsipi/scsi_all.h>
87 #include <dev/scsipi/scsipi_all.h>
88 #include <dev/scsipi/scsiconf.h>
89 #include <machine/cpu.h>
90 #ifdef __m68k__
91 #include <m68k/include/cacheops.h>
92 #endif
93 #include <amiga/amiga/custom.h>
94 #include <amiga/amiga/isr.h>
95
96 #define ARCH_720
97
98 #include <amiga/dev/siopreg.h>
99 #include <amiga/dev/siopvar.h>
100
101 /*
102 * SCSI delays
103 * In u-seconds, primarily for state changes on the SPC.
104 */
105 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */
106 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */
107 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */
108
109 void siopng_select(struct siop_softc *);
110 void siopngabort(struct siop_softc *, siop_regmap_p, const char *);
111 void siopngerror(struct siop_softc *, siop_regmap_p, u_char);
112 int siopng_checkintr(struct siop_softc *, u_char, u_char, u_short, int *);
113 void siopngreset(struct siop_softc *);
114 void siopngsetdelay(int);
115 void siopng_scsidone(struct siop_acb *, int);
116 void siopng_timeout(void *);
117 void siopng_sched(struct siop_softc *);
118 void siopng_poll(struct siop_softc *, struct siop_acb *);
119 void siopngintr(struct siop_softc *);
120 void scsi_period_to_siopng(struct siop_softc *, int);
121 void siopng_start(struct siop_softc *, int, int, u_char *, int, u_char *, int);
122 void siopng_dump_acb(struct siop_acb *);
123
124 /* 53C720/770 script */
125
126 #include <amiga/dev/siop2_script.out>
127
128 /* default to not inhibit sync negotiation on any drive */
129 u_char siopng_inhibit_sync[16] = {
130 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
131 }; /* initialize, so patchable */
132
133 u_char siopng_inhibit_wide[16] = {
134 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
135 }; /* initialize, so patchable */
136
137 u_char siopng_allow_disc[16] = {
138 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
139 };
140
141 int siopng_no_dma = 0;
142
143 int siopng_reset_delay = 250; /* delay after reset, in milleseconds */
144
145 int siopng_cmd_wait = SCSI_CMD_WAIT;
146 int siopng_data_wait = SCSI_DATA_WAIT;
147 int siopng_init_wait = SCSI_INIT_WAIT;
148
149 #define DEBUG_SYNC
150
151 #ifdef DEBUG
152 /*
153 * 0x01 - full debug
154 * 0x02 - DMA chaining
155 * 0x04 - siopngintr
156 * 0x08 - phase mismatch
157 * 0x10 - <not used>
158 * 0x20 - panic on unhandled exceptions
159 * 0x100 - disconnect/reselect
160 */
161 int siopng_debug = 0;
162 int siopngsync_debug = 0;
163 int siopngdma_hits = 0;
164 int siopngdma_misses = 0;
165 int siopngchain_ints = 0;
166 int siopngstarts = 0;
167 int siopngints = 0;
168 int siopngphmm = 0;
169 #define SIOP_TRACE_SIZE 128
170 #define SIOP_TRACE(a,b,c,d) \
171 siopng_trbuf[siopng_trix] = (a); \
172 siopng_trbuf[siopng_trix+1] = (b); \
173 siopng_trbuf[siopng_trix+2] = (c); \
174 siopng_trbuf[siopng_trix+3] = (d); \
175 siopng_trix = (siopng_trix + 4) & (SIOP_TRACE_SIZE - 1);
176 u_char siopng_trbuf[SIOP_TRACE_SIZE];
177 int siopng_trix;
178 void siopng_dump(struct siop_softc *);
179 void siopng_dump_trace(void);
180 #else
181 #define SIOP_TRACE(a,b,c,d)
182 #endif
183
184
185 static const char *siopng_chips[] = {
186 "720", "720SE", "770", "0x3",
187 "810A", "0x5", "0x6", "0x7",
188 "0x8", "0x9", "0xA", "0xB",
189 "0xC", "0xD", "0xE", "0xF",
190 };
191
192 /*
193 * default minphys routine for siopng based controllers
194 */
195 void
196 siopng_minphys(struct buf *bp)
197 {
198
199 /*
200 * No max transfer at this level.
201 */
202 minphys(bp);
203 }
204
205 /*
206 * used by specific siopng controller
207 *
208 */
209 void
210 siopng_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req,
211 void *arg)
212 {
213 struct scsipi_xfer *xs;
214 struct scsipi_periph *periph;
215 struct siop_acb *acb;
216 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev;
217 int flags, s;
218
219 switch (req) {
220 case ADAPTER_REQ_RUN_XFER:
221 xs = arg;
222 periph = xs->xs_periph;
223 flags = xs->xs_control;
224
225 /* XXXX ?? */
226 if (flags & XS_CTL_DATA_UIO)
227 panic("siopng: scsi data uio requested");
228
229 /* XXXX ?? */
230 if (sc->sc_nexus && flags & XS_CTL_POLL)
231 /* panic("siopng_scsicmd: busy");*/
232 printf("siopng_scsicmd: busy\n");
233
234 s = splbio();
235 acb = sc->free_list.tqh_first;
236 if (acb) {
237 TAILQ_REMOVE(&sc->free_list, acb, chain);
238 }
239 splx(s);
240
241 #ifdef DIAGNOSTIC
242 /*
243 * This should never happen as we track the resources
244 * in the mid-layer.
245 */
246 if (acb == NULL) {
247 scsipi_printaddr(periph);
248 printf("unable to allocate acb\n");
249 panic("siopng_scsipi_request");
250 }
251 #endif
252 acb->flags = ACB_ACTIVE;
253 acb->xs = xs;
254 memcpy(&acb->cmd, xs->cmd, xs->cmdlen);
255 acb->clen = xs->cmdlen;
256 acb->daddr = xs->data;
257 acb->dleft = xs->datalen;
258
259 s = splbio();
260 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain);
261
262 if (sc->sc_nexus == NULL)
263 siopng_sched(sc);
264
265 splx(s);
266
267 if (flags & XS_CTL_POLL || siopng_no_dma)
268 siopng_poll(sc, acb);
269 return;
270
271 case ADAPTER_REQ_GROW_RESOURCES:
272 return;
273
274 case ADAPTER_REQ_SET_XFER_MODE:
275 return;
276 }
277 }
278
279 void
280 siopng_poll(struct siop_softc *sc, struct siop_acb *acb)
281 {
282 siop_regmap_p rp = sc->sc_siopp;
283 struct scsipi_xfer *xs = acb->xs;
284 int i;
285 int status;
286 u_char istat;
287 u_char dstat;
288 u_short sist;
289 int s;
290 int to;
291
292 s = splbio();
293 to = xs->timeout / 1000;
294 if (sc->nexus_list.tqh_first)
295 printf("%s: siopng_poll called with disconnected device\n",
296 sc->sc_dev.dv_xname);
297 for (;;) {
298 /* use cmd_wait values? */
299 i = 50000;
300 /* XXX spl0(); */
301 while (((istat = rp->siop_istat) &
302 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) {
303 if (--i <= 0) {
304 #ifdef DEBUG
305 printf ("waiting: tgt %d cmd %02x sbcl %02x istat %02x sbdl %04x\n dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n",
306 xs->xs_periph->periph_target, acb->cmd.opcode,
307 rp->siop_sbcl, istat, rp->siop_sbdl, rp->siop_dsp,
308 rp->siop_dsp - sc->sc_scriptspa,
309 *((volatile long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout);
310 #endif
311 i = 50000;
312 --to;
313 if (to <= 0) {
314 siopngreset(sc);
315 return;
316 }
317 }
318 delay(20);
319 }
320 sist = rp->siop_sist;
321 dstat = rp->siop_dstat;
322 if (siopng_checkintr(sc, istat, dstat, sist, &status)) {
323 if (acb != sc->sc_nexus)
324 printf("%s: siopng_poll disconnected device completed\n",
325 sc->sc_dev.dv_xname);
326 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) {
327 sc->sc_flags &= ~SIOP_INTSOFF;
328 rp->siop_sien = sc->sc_sien;
329 rp->siop_dien = sc->sc_dien;
330 }
331 siopng_scsidone(sc->sc_nexus, status);
332 }
333 if (xs->xs_status & XS_STS_DONE)
334 break;
335 }
336 splx(s);
337 }
338
339 /*
340 * start next command that's ready
341 */
342 void
343 siopng_sched(struct siop_softc *sc)
344 {
345 struct scsipi_periph *periph;
346 struct siop_acb *acb;
347 int i;
348
349 #ifdef DEBUG
350 if (sc->sc_nexus) {
351 printf("%s: siopng_sched- nexus %p/%d ready %p/%d\n",
352 sc->sc_dev.dv_xname, sc->sc_nexus,
353 sc->sc_nexus->xs->xs_periph->periph_target,
354 sc->ready_list.tqh_first,
355 sc->ready_list.tqh_first->xs->xs_periph->periph_target);
356 return;
357 }
358 #endif
359 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) {
360 periph = acb->xs->xs_periph;
361 i = periph->periph_target;
362 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) {
363 struct siop_tinfo *ti = &sc->sc_tinfo[i];
364
365 TAILQ_REMOVE(&sc->ready_list, acb, chain);
366 sc->sc_nexus = acb;
367 periph = acb->xs->xs_periph;
368 ti = &sc->sc_tinfo[periph->periph_target];
369 ti->lubusy |= (1 << periph->periph_lun);
370 break;
371 }
372 }
373
374 if (acb == NULL) {
375 #ifdef DEBUGXXX
376 printf("%s: siopng_sched didn't find ready command\n",
377 sc->sc_dev.dv_xname);
378 #endif
379 return;
380 }
381
382 if (acb->xs->xs_control & XS_CTL_RESET)
383 siopngreset(sc);
384
385 #if 0
386 acb->cmd.bytes[0] |= periph->periph_lun << 5; /* XXXX */
387 #endif
388 ++sc->sc_active;
389 siopng_select(sc);
390 }
391
392 void
393 siopng_scsidone(struct siop_acb *acb, int stat)
394 {
395 struct scsipi_xfer *xs;
396 struct scsipi_periph *periph;
397 struct siop_softc *sc;
398 int dosched = 0;
399
400 if (acb == NULL || (xs = acb->xs) == NULL) {
401 #ifdef DIAGNOSTIC
402 printf("siopng_scsidone: NULL acb or scsipi_xfer\n");
403 #if defined(DEBUG) && defined(DDB)
404 Debugger();
405 #endif
406 #endif
407 return;
408 }
409
410 callout_stop(&xs->xs_callout);
411
412 periph = xs->xs_periph;
413 sc = (void *)periph->periph_channel->chan_adapter->adapt_dev;
414
415 xs->status = stat;
416 xs->resid = 0; /* XXXX */
417
418 if (xs->error == XS_NOERROR) {
419 if (stat == SCSI_CHECK || stat == SCSI_BUSY)
420 xs->error = XS_BUSY;
421 }
422
423 /*
424 * Remove the ACB from whatever queue it's on. We have to do a bit of
425 * a hack to figure out which queue it's on. Note that it is *not*
426 * necessary to cdr down the ready queue, but we must cdr down the
427 * nexus queue and see if it's there, so we can mark the unit as no
428 * longer busy. This code is sickening, but it works.
429 */
430 if (acb == sc->sc_nexus) {
431 sc->sc_nexus = NULL;
432 sc->sc_tinfo[periph->periph_target].lubusy &=
433 ~(1<<periph->periph_lun);
434 if (sc->ready_list.tqh_first)
435 dosched = 1; /* start next command */
436 --sc->sc_active;
437 SIOP_TRACE('d','a',stat,0)
438 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) {
439 TAILQ_REMOVE(&sc->ready_list, acb, chain);
440 SIOP_TRACE('d','r',stat,0)
441 } else {
442 register struct siop_acb *acb2;
443 for (acb2 = sc->nexus_list.tqh_first; acb2;
444 acb2 = acb2->chain.tqe_next)
445 if (acb2 == acb) {
446 TAILQ_REMOVE(&sc->nexus_list, acb, chain);
447 sc->sc_tinfo[periph->periph_target].lubusy
448 &= ~(1<<periph->periph_lun);
449 --sc->sc_active;
450 break;
451 }
452 if (acb2)
453 ;
454 else if (acb->chain.tqe_next) {
455 TAILQ_REMOVE(&sc->ready_list, acb, chain);
456 --sc->sc_active;
457 } else {
458 printf("%s: can't find matching acb\n",
459 sc->sc_dev.dv_xname);
460 #ifdef DDB
461 /* Debugger(); */
462 #endif
463 }
464 SIOP_TRACE('d','n',stat,0);
465 }
466 /* Put it on the free list. */
467 acb->flags = ACB_FREE;
468 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain);
469
470 sc->sc_tinfo[periph->periph_target].cmds++;
471
472 scsipi_done(xs);
473
474 if (dosched && sc->sc_nexus == NULL)
475 siopng_sched(sc);
476 }
477
478 void
479 siopngabort(register struct siop_softc *sc, siop_regmap_p rp, const char *where)
480 {
481 #ifdef fix_this
482 int i;
483 #endif
484
485 printf ("%s: abort %s: dstat %02x, istat %02x sist %04x sien %04x sbcl %02x\n",
486 sc->sc_dev.dv_xname,
487 where, rp->siop_dstat, rp->siop_istat, rp->siop_sist,
488 rp->siop_sien, rp->siop_sbcl);
489 siopng_dump_registers(sc);
490
491 if (sc->sc_active > 0) {
492 #ifdef TODO
493 SET_SBIC_cmd (rp, SBIC_CMD_ABORT);
494 WAIT_CIP (rp);
495
496 GET_SBIC_asr (rp, asr);
497 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI))
498 {
499 /* ok, get more drastic.. */
500
501 SET_SBIC_cmd (rp, SBIC_CMD_RESET);
502 delay(25);
503 SBIC_WAIT(rp, SBIC_ASR_INT, 0);
504 GET_SBIC_csr (rp, csr); /* clears interrupt also */
505
506 return;
507 }
508
509 do
510 {
511 SBIC_WAIT (rp, SBIC_ASR_INT, 0);
512 GET_SBIC_csr (rp, csr);
513 }
514 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1)
515 && (csr != SBIC_CSR_CMD_INVALID));
516 #endif
517
518 /* lets just hope it worked.. */
519 #ifdef fix_this
520 for (i = 0; i < 2; ++i) {
521 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] !=
522 sc->sc_cur) {
523 printf ("siopngabort: cleanup!\n");
524 sc->sc_iob[i].sc_xs = NULL;
525 }
526 }
527 #endif /* fix_this */
528 /* sc->sc_active = 0; */
529 }
530 }
531
532 void
533 siopnginitialize(struct siop_softc *sc)
534 {
535 int i;
536 u_int inhibit_sync;
537 extern u_long scsi_nosync;
538 extern int shift_nosync;
539
540 /*
541 * Need to check that scripts is on a long word boundary
542 * Also should verify that dev doesn't span non-contiguous
543 * physical pages.
544 */
545 sc->sc_scriptspa = kvtop((void *)__UNCONST(siopng_scripts));
546
547 /*
548 * malloc sc_acb to ensure that DS is on a long word boundary.
549 */
550
551 sc->sc_acb = malloc(sizeof(struct siop_acb) * SIOP_NACB,
552 M_DEVBUF, M_NOWAIT);
553 if (sc->sc_acb == NULL)
554 panic("siopnginitialize: ACB malloc failed!");
555
556 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq;
557 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq;
558 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq;
559 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */
560 if (sc->sc_minsync < 25)
561 sc->sc_minsync = 25;
562 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */
563 if (sc->sc_clock_freq <= 25) {
564 sc->sc_dcntl |= 0x80; /* SCLK/1 */
565 sc->sc_tcp[0] = sc->sc_tcp[1];
566 } else if (sc->sc_clock_freq <= 37) {
567 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */
568 sc->sc_tcp[0] = sc->sc_tcp[2];
569 } else if (sc->sc_clock_freq <= 50) {
570 sc->sc_dcntl |= 0x00; /* SCLK/2 */
571 sc->sc_tcp[0] = sc->sc_tcp[3];
572 } else {
573 sc->sc_dcntl |= 0xc0; /* SCLK/3 */
574 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq;
575 }
576
577 if (scsi_nosync) {
578 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff;
579 shift_nosync += 16; /* XXX maxtarget */
580 #ifdef DEBUG
581 if (inhibit_sync)
582 printf("%s: Inhibiting synchronous transfer %02x\n",
583 sc->sc_dev.dv_xname, inhibit_sync);
584 #endif
585 for (i = 0; i < 16; ++i) /* XXX maxtarget */
586 if (inhibit_sync & (1 << i))
587 siopng_inhibit_sync[i] = 1;
588 }
589
590 siopngreset (sc);
591 }
592
593 void
594 siopng_timeout(void *arg)
595 {
596 struct siop_acb *acb;
597 struct scsipi_periph *periph;
598 struct siop_softc *sc;
599 int s;
600
601 acb = arg;
602 periph = acb->xs->xs_periph;
603 sc = device_private(periph->periph_channel->chan_adapter->adapt_dev);
604 scsipi_printaddr(periph);
605 printf("timed out\n");
606
607 s = splbio();
608
609 acb->xs->error = XS_TIMEOUT;
610 siopngreset(sc);
611
612 splx(s);
613 }
614
615 void
616 siopngreset(struct siop_softc *sc)
617 {
618 siop_regmap_p rp;
619 u_int i, s;
620 u_short dummy;
621 struct siop_acb *acb;
622
623 rp = sc->sc_siopp;
624
625 if (sc->sc_flags & SIOP_ALIVE)
626 siopngabort(sc, rp, "reset");
627
628 printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */
629
630 s = splbio();
631
632 /*
633 * Reset the chip
634 * XXX - is this really needed?
635 */
636 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */
637 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */
638 rp->siop_istat &= ~SIOP_ISTAT_RST;
639 /*
640 * Reset SCSI bus (do we really want this?)
641 */
642 rp->siop_sien = 0;
643 rp->siop_scntl1 |= SIOP_SCNTL1_RST;
644 delay(1);
645 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST;
646
647 /*
648 * Set up various chip parameters
649 */
650 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */
651 delay(20);
652 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */
653 rp->siop_scntl3 = 0x15; /* SCF/CCF*/
654 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */
655 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */
656 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG;
657 rp->siop_dcntl = sc->sc_dcntl;
658 rp->siop_dmode = 0xc0; /* XXX burst length */
659 rp->siop_sien = 0x00; /* don't enable interrupts yet */
660 rp->siop_dien = 0x00; /* don't enable interrupts yet */
661 rp->siop_scid = sc->sc_channel.chan_id |
662 SIOP_SCID_RRE | SIOP_SCID_SRE;
663 rp->siop_respid = 1 << sc->sc_channel.chan_id;
664 rp->siop_dwt = 0x00;
665 rp->siop_stime0 = 0x0c; /* XXXXX check */
666
667 /* will need to re-negotiate sync xfers */
668 memset(&sc->sc_sync, 0, sizeof (sc->sc_sync));
669
670 i = rp->siop_istat;
671 if (i & SIOP_ISTAT_SIP)
672 dummy = rp->siop_sist;
673 if (i & SIOP_ISTAT_DIP)
674 dummy = rp->siop_dstat;
675
676 splx (s);
677
678 delay (siopng_reset_delay * 1000);
679
680 /*
681 * is lower half unterminated?
682 */
683 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) {
684 printf(" no SCSI termination, host adapter deactivated.\n");
685 sc->sc_channel.chan_ntargets = 0; /* XXX */
686 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF);
687 /* disable SCSI and DMA interrupts */
688 sc->sc_sien = 0;
689 sc->sc_dien = 0;
690 rp->siop_sien = sc->sc_sien;
691 rp->siop_dien = sc->sc_dien;
692
693 return;
694 }
695
696 /*
697 * Check if upper half of SCSI bus is unterminated, and disallow
698 * disconnections if it appears to be unterminated.
699 */
700 if ((rp->siop_sbdl & 0xff00) == 0xff00) {
701 printf(" NO WIDE TERM");
702 /* XXX need to restrict maximum target ID as well? */
703 sc->sc_channel.chan_ntargets = 8;
704 for (i = 0; i < 16; ++i) {
705 siopng_allow_disc[i] = 0;
706 siopng_inhibit_wide[i] |= 0x80;
707 }
708 }
709
710 printf("siopng type %s id %d reset V%d\n",
711 siopng_chips[rp->siop_macntl>>4],
712 sc->sc_channel.chan_ntargets,
713 rp->siop_ctest3 >> 4);
714
715 if ((sc->sc_flags & SIOP_ALIVE) == 0) {
716 TAILQ_INIT(&sc->ready_list);
717 TAILQ_INIT(&sc->nexus_list);
718 TAILQ_INIT(&sc->free_list);
719 sc->sc_nexus = NULL;
720 acb = sc->sc_acb;
721 memset(acb, 0, sizeof(struct siop_acb) * SIOP_NACB);
722 for (i = 0; i < SIOP_NACB; i++) {
723 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain);
724 acb++;
725 }
726 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo));
727 } else {
728 if (sc->sc_nexus != NULL) {
729 sc->sc_nexus->xs->error = XS_RESET;
730 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]);
731 }
732 while ((acb = sc->nexus_list.tqh_first) > 0) {
733 acb->xs->error = XS_RESET;
734 siopng_scsidone(acb, acb->stat[0]);
735 }
736 }
737
738 sc->sc_flags |= SIOP_ALIVE;
739 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF);
740 /* enable SCSI and DMA interrupts */
741 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/
742 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC |
743 SIOP_SIEN_RST | SIOP_SIEN_PAR;
744 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR |
745 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID;
746 rp->siop_sien = sc->sc_sien;
747 rp->siop_dien = sc->sc_dien;
748 /*siopng_dump_registers(sc);*/
749 }
750
751 /*
752 * Setup Data Storage for 53C720/770 and start SCRIPTS processing
753 */
754
755 void
756 siopng_start(struct siop_softc *sc, int target, int lun, u_char *cbuf,
757 int clen, u_char *buf, int len)
758 {
759 siop_regmap_p rp = sc->sc_siopp;
760 int nchain;
761 int count, tcount;
762 char *addr, *dmaend;
763 struct siop_acb *acb = sc->sc_nexus;
764 #ifdef DEBUG
765 int i;
766 #endif
767
768 #ifdef DEBUG
769 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) {
770 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n",
771 rp, &siopng_scripts, &acb->ds, sc->sc_active);
772 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n",
773 rp->siop_istat, rp->siop_sfbr, rp->siop_respid,
774 rp->siop_sien, rp->siop_dien);
775 #ifdef DDB
776 /*Debugger();*/
777 #endif
778 }
779 #endif
780 acb->msgout[0] = MSG_IDENTIFY | lun;
781 if (siopng_allow_disc[target] & 2 ||
782 (siopng_allow_disc[target] && len == 0))
783 acb->msgout[0] = MSG_IDENTIFY_DR | lun;
784 acb->status = 0;
785 acb->stat[0] = -1;
786 acb->msg[0] = -1;
787 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) |
788 (sc->sc_sync[target].scntl3 << 24);
789 acb->ds.idlen = 1;
790 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]);
791 acb->ds.cmdlen = clen;
792 acb->ds.cmdbuf = (char *) kvtop(cbuf);
793 acb->ds.stslen = 1;
794 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]);
795 acb->ds.msglen = 1;
796 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]);
797 acb->msg[1] = -1;
798 acb->ds.msginlen = 1;
799 acb->ds.extmsglen = 1;
800 acb->ds.synmsglen = 3;
801 acb->ds.msginbuf = acb->ds.msgbuf + 1;
802 acb->ds.extmsgbuf = acb->ds.msginbuf + 1;
803 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1;
804 memset(&acb->ds.chain, 0, sizeof (acb->ds.chain));
805
806 if (sc->sc_sync[target].state == NEG_WIDE) {
807 if (siopng_inhibit_wide[target]) {
808 sc->sc_sync[target].state = NEG_SYNC;
809 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS;
810 #ifdef DEBUG
811 if (siopngsync_debug)
812 printf ("Forcing target %d narrow\n", target);
813 #endif
814 }
815 else {
816 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */
817 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */
818 acb->msg[2] = -1;
819 acb->msgout[1] = MSG_EXT_MESSAGE;
820 acb->msgout[2] = 2;
821 acb->msgout[3] = MSG_WIDE_REQ;
822 acb->msgout[4] = 1;
823 acb->ds.idlen = 5;
824 acb->ds.synmsglen = 2;
825 sc->sc_sync[target].state = NEG_WAITW;
826 #ifdef DEBUG
827 if (siopngsync_debug)
828 printf("Sending wide request to target %d\n", target);
829 #endif
830 }
831 }
832 if (sc->sc_sync[target].state == NEG_SYNC) {
833 if (siopng_inhibit_sync[target]) {
834 sc->sc_sync[target].state = NEG_DONE;
835 sc->sc_sync[target].scntl3 = 5 | /* XXX */
836 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */
837 sc->sc_sync[target].sxfer = 0;
838 #ifdef DEBUG
839 if (siopngsync_debug)
840 printf ("Forcing target %d asynchronous\n", target);
841 #endif
842 }
843 else {
844 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */
845 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */
846 acb->msg[2] = -1;
847 acb->msgout[1] = MSG_EXT_MESSAGE;
848 acb->msgout[2] = 3;
849 acb->msgout[3] = MSG_SYNC_REQ;
850 #ifdef MAXTOR_SYNC_KLUDGE
851 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */
852 #else
853 acb->msgout[4] = sc->sc_minsync;
854 #endif
855 acb->msgout[5] = SIOP_MAX_OFFSET;
856 acb->ds.idlen = 6;
857 sc->sc_sync[target].state = NEG_WAITS;
858 #ifdef DEBUG
859 if (siopngsync_debug)
860 printf ("Sending sync request to target %d\n", target);
861 #endif
862 }
863 }
864
865 /*
866 * Build physical DMA addresses for scatter/gather I/O
867 */
868 acb->iob_buf = buf;
869 acb->iob_len = len;
870 acb->iob_curbuf = acb->iob_curlen = 0;
871 nchain = 0;
872 count = len;
873 addr = buf;
874 dmaend = NULL;
875 while (count > 0) {
876 acb->ds.chain[nchain].databuf = (char *) kvtop (addr);
877 if (count < (tcount = PAGE_SIZE - ((int) addr & PGOFSET)))
878 tcount = count;
879
880 #if DEBUG_ONLY_IF_DESPERATE
881 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n",
882 nchain, count, tcount, addr,
883 acb->ds.chain[nchain].databuf);
884 #endif
885 acb->ds.chain[nchain].datalen = tcount;
886 addr += tcount;
887 count -= tcount;
888 if (acb->ds.chain[nchain].databuf == dmaend) {
889 dmaend += acb->ds.chain[nchain].datalen;
890 acb->ds.chain[nchain].datalen = 0;
891 acb->ds.chain[--nchain].datalen += tcount;
892 #ifdef DEBUG
893 ++siopngdma_hits;
894 #endif
895 }
896 else {
897 dmaend = acb->ds.chain[nchain].databuf +
898 acb->ds.chain[nchain].datalen;
899 acb->ds.chain[nchain].datalen = tcount;
900 #ifdef DEBUG
901 if (nchain) /* Don't count miss on first one */
902 ++siopngdma_misses;
903 #endif
904 }
905 ++nchain;
906 }
907 #ifdef DEBUG
908 if (nchain != 1 && len != 0 && siopng_debug & 3) {
909 printf ("DMA chaining set: %d\n", nchain);
910 for (i = 0; i < nchain; ++i) {
911 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf,
912 acb->ds.chain[i].datalen);
913 }
914 }
915 #endif
916
917 /* push data cache for all data the 53c720/770 needs to access */
918 dma_cachectl ((void *)acb, sizeof (struct siop_acb));
919 dma_cachectl (cbuf, clen);
920 if (buf != NULL && len != 0)
921 dma_cachectl (buf, len);
922 #ifdef DEBUG
923 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) {
924 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n",
925 rp, &siopng_scripts, &acb->ds, sc->sc_active);
926 #ifdef DDB
927 /*Debugger();*/
928 #endif
929 }
930 #endif
931 if (sc->nexus_list.tqh_first == NULL) {
932 callout_reset(&acb->xs->xs_callout,
933 mstohz(acb->xs->timeout) + 1, siopng_timeout, acb);
934 if (rp->siop_istat & SIOP_ISTAT_CON)
935 printf("%s: siopng_select while connected?\n",
936 sc->sc_dev.dv_xname);
937 rp->siop_temp = 0;
938 #ifndef FIXME
939 rp->siop_scntl3 = sc->sc_sync[target].scntl3;
940 #endif
941 rp->siop_dsa = kvtop((void *)&acb->ds);
942 rp->siop_dsp = sc->sc_scriptspa;
943 SIOP_TRACE('s',1,0,0)
944 } else {
945 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) {
946 rp->siop_istat = SIOP_ISTAT_SIGP;
947 SIOP_TRACE('s',2,0,0);
948 }
949 else {
950 SIOP_TRACE('s',3,rp->siop_istat,0);
951 }
952 }
953 #ifdef DEBUG
954 ++siopngstarts;
955 #endif
956 }
957
958 /*
959 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP
960 */
961
962 int
963 siopng_checkintr(struct siop_softc *sc, u_char istat, u_char dstat,
964 u_short sist, int *status)
965 {
966 siop_regmap_p rp = sc->sc_siopp;
967 struct siop_acb *acb = sc->sc_nexus;
968 int target = 0;
969 int dfifo, dbc, sstat0, sstat1, sstat2;
970
971 dfifo = rp->siop_dfifo;
972 dbc = rp->siop_dbc0;
973 sstat0 = rp->siop_sstat0;
974 sstat1 = rp->siop_sstat1;
975 sstat2 = rp->siop_sstat2;
976 rp->siop_ctest3 |= SIOP_CTEST8_CLF;
977 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT)
978 ;
979 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF;
980 #ifdef DEBUG
981 ++siopngints;
982 #if 0
983 if (siopng_debug & 0x100) {
984 DCIAS(&acb->stat[0]); /* XXX */
985 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n",
986 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]);
987 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n",
988 acb->msg[0], acb->msg[1], acb->msg[2],
989 acb->msg[3], acb->msg[4], acb->msg[5]);
990 }
991 #endif
992 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa ||
993 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) {
994 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx",
995 sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa,
996 sc->sc_scriptspa + sizeof(siopng_scripts));
997 printf(" istat %x dstat %x sist %x\n",
998 istat, dstat, sist);
999 #ifdef DDB
1000 Debugger();
1001 #endif
1002 }
1003 #endif
1004 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist);
1005 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) {
1006 /* Normal completion status, or check condition */
1007 #ifdef DEBUG
1008 if (rp->siop_dsa != kvtop((void *)&acb->ds)) {
1009 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa,
1010 (unsigned)kvtop((void *)&acb->ds));
1011 panic("*** siopng DSA invalid ***");
1012 }
1013 #endif
1014 target = acb->xs->xs_periph->periph_target;
1015 if (sc->sc_sync[target].state == NEG_WAITW) {
1016 if (acb->msg[1] == 0xff)
1017 printf ("%s: target %d ignored wide request\n",
1018 sc->sc_dev.dv_xname, target);
1019 else if (acb->msg[1] == MSG_REJECT)
1020 printf ("%s: target %d rejected wide request\n",
1021 sc->sc_dev.dv_xname, target);
1022 else {
1023 printf("%s: target %d (wide) %02x %02x %02x %02x\n",
1024 sc->sc_dev.dv_xname, target, acb->msg[1],
1025 acb->msg[2], acb->msg[3], acb->msg[4]);
1026 if (acb->msg[1] == MSG_EXT_MESSAGE &&
1027 acb->msg[2] == 2 &&
1028 acb->msg[3] == MSG_WIDE_REQ)
1029 sc->sc_sync[target].scntl3 = acb->msg[4] ?
1030 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS :
1031 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS;
1032 }
1033 sc->sc_sync[target].state = NEG_SYNC;
1034 }
1035 if (sc->sc_sync[target].state == NEG_WAITS) {
1036 if (acb->msg[1] == 0xff)
1037 printf ("%s: target %d ignored sync request\n",
1038 sc->sc_dev.dv_xname, target);
1039 else if (acb->msg[1] == MSG_REJECT)
1040 printf ("%s: target %d rejected sync request\n",
1041 sc->sc_dev.dv_xname, target);
1042 else
1043 /* XXX - need to set sync transfer parameters */
1044 printf("%s: target %d (sync) %02x %02x %02x\n",
1045 sc->sc_dev.dv_xname, target, acb->msg[1],
1046 acb->msg[2], acb->msg[3]);
1047 sc->sc_sync[target].state = NEG_DONE;
1048 }
1049 dma_cachectl(&acb->stat[0], 1);
1050 *status = acb->stat[0];
1051 #ifdef DEBUG
1052 if (rp->siop_sbcl & SIOP_BSY) {
1053 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n",
1054 rp, &siopng_scripts, &acb->ds);*/
1055 #ifdef DDB
1056 /*Debugger();*/
1057 #endif
1058 }
1059 if (acb->msg[0] != 0x00)
1060 printf("%s: message was not COMMAND COMPLETE: %x\n",
1061 sc->sc_dev.dv_xname, acb->msg[0]);
1062 #endif
1063 if (sc->nexus_list.tqh_first)
1064 rp->siop_dcntl |= SIOP_DCNTL_STD;
1065 return 1;
1066 }
1067 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) {
1068 target = acb->xs->xs_periph->periph_target;
1069 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 &&
1070 acb->msg[3] == MSG_WIDE_REQ) {
1071 #ifdef DEBUG
1072 if (siopngsync_debug)
1073 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n",
1074 acb->msg[0], acb->msg[1], acb->msg[2],
1075 acb->msg[3], acb->msg[4], acb->msg[5]);
1076 #endif
1077 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS);
1078 if (acb->msg[2] == 2 &&
1079 acb->msg[3] == MSG_WIDE_REQ &&
1080 acb->msg[4] != 0) {
1081 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS;
1082 printf ("%s: target %d now wide %d\n",
1083 sc->sc_dev.dv_xname, target,
1084 acb->msg[4]);
1085 }
1086 rp->siop_scntl3 = sc->sc_sync[target].scntl3;
1087 if (sc->sc_sync[target].state == NEG_WAITW) {
1088 sc->sc_sync[target].state = NEG_SYNC;
1089 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack;
1090 return(0);
1091 }
1092 rp->siop_dcntl |= SIOP_DCNTL_STD;
1093 sc->sc_sync[target].state = NEG_SYNC;
1094 return (0);
1095 }
1096 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 &&
1097 acb->msg[3] == MSG_SYNC_REQ) {
1098 #ifdef DEBUG
1099 if (siopngsync_debug)
1100 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n",
1101 acb->msg[0], acb->msg[1], acb->msg[2],
1102 acb->msg[3], acb->msg[4], acb->msg[5]);
1103 #endif
1104 sc->sc_sync[target].sxfer = 0;
1105 sc->sc_sync[target].scntl3 = 5 | /* XXX */
1106 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */
1107 if (acb->msg[2] == 3 &&
1108 acb->msg[3] == MSG_SYNC_REQ &&
1109 acb->msg[5] != 0) {
1110 #ifdef MAXTOR_KLUDGE
1111 /*
1112 * Kludge for my Maxtor XT8580S
1113 * It accepts whatever we request, even
1114 * though it won't work. So we ask for
1115 * a short period than we can handle. If
1116 * the device says it can do it, use 208ns.
1117 * If the device says it can do less than
1118 * 100ns, then we limit it to 100ns.
1119 */
1120 if (acb->msg[4] && acb->msg[4] < 100 / 4) {
1121 #ifdef DEBUG
1122 printf ("%d: target %d wanted %dns period\n",
1123 sc->sc_dev.dv_xname, target,
1124 acb->msg[4] * 4);
1125 #endif
1126 if (acb->msg[4] == 50 / 4)
1127 acb->msg[4] = 208 / 4;
1128 else
1129 acb->msg[4] = 100 / 4;
1130 }
1131 #endif /* MAXTOR_KLUDGE */
1132 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n",
1133 sc->sc_dev.dv_xname, target,
1134 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4,
1135 acb->msg[5]);
1136 scsi_period_to_siopng (sc, target);
1137 }
1138 rp->siop_sxfer = sc->sc_sync[target].sxfer;
1139 rp->siop_scntl3 = sc->sc_sync[target].scntl3;
1140 if (sc->sc_sync[target].state == NEG_WAITS) {
1141 sc->sc_sync[target].state = NEG_DONE;
1142 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack;
1143 return(0);
1144 }
1145 rp->siop_dcntl |= SIOP_DCNTL_STD;
1146 sc->sc_sync[target].state = NEG_DONE;
1147 return (0);
1148 }
1149 /* XXX - not SDTR message */
1150 }
1151 if (sist & SIOP_SIST_MA) { /* Phase mismatch */
1152 #ifdef DEBUG
1153 ++siopngphmm;
1154 if (acb == NULL)
1155 printf("%s: Phase mismatch with no active command?\n",
1156 sc->sc_dev.dv_xname);
1157 #endif
1158 if (acb->iob_len) {
1159 int adjust;
1160 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f);
1161 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */
1162 ++adjust;
1163 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */
1164 ++adjust;
1165 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */
1166 ++adjust;
1167 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */
1168 ++adjust;
1169 acb->iob_curlen =
1170 *((long *)__UNVOLATILE(&rp->siop_dcmd)) & 0xffffff;
1171 acb->iob_curlen += adjust;
1172 acb->iob_curbuf =
1173 *((long *)__UNVOLATILE(&rp->siop_dnad)) - adjust;
1174 #ifdef DEBUG
1175 if (siopng_debug & 0x100) {
1176 int i;
1177 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n",
1178 acb->iob_curbuf, acb->iob_curlen, dfifo,
1179 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb);
1180 if (acb->ds.chain[1].datalen) {
1181 for (i = 0; acb->ds.chain[i].datalen; ++i)
1182 printf("chain[%d] addr %p len %lx\n",
1183 i, acb->ds.chain[i].databuf,
1184 acb->ds.chain[i].datalen);
1185 }
1186 }
1187 #endif
1188 dma_cachectl ((void *)acb, sizeof(*acb));
1189 }
1190 #ifdef DEBUG
1191 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp);
1192 if (siopng_debug & 9)
1193 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n",
1194 rp->siop_sbcl,
1195 rp->siop_dsp - sc->sc_scriptspa,
1196 *((volatile long *)&rp->siop_dcmd));
1197 #endif
1198 if ((rp->siop_sbcl & SIOP_REQ) == 0) {
1199 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n",
1200 rp->siop_sbcl, rp->siop_dsp);
1201 #if defined(DEBUG) && defined(DDB)
1202 Debugger();
1203 #endif
1204 }
1205 switch (rp->siop_sbcl & 7) {
1206 case 0: /* data out */
1207 case 1: /* data in */
1208 case 2: /* status */
1209 case 3: /* command */
1210 case 6: /* message in */
1211 case 7: /* message out */
1212 rp->siop_dsp = sc->sc_scriptspa + Ent_switch;
1213 break;
1214 default:
1215 goto bad_phase;
1216 }
1217 return 0;
1218 }
1219 if (sist & SIOP_SIST_STO) { /* Select timed out */
1220 #ifdef DEBUG
1221 if (acb == NULL)
1222 printf("%s: Select timeout with no active command?\n",
1223 sc->sc_dev.dv_xname);
1224 if (rp->siop_sbcl & SIOP_BSY) {
1225 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n",
1226 rp, &siopng_scripts, &acb->ds);
1227 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n",
1228 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist);
1229 if (!(rp->siop_sbcl & SIOP_BSY)) {
1230 printf ("Yikes, it's not busy now!\n");
1231 #if 0
1232 *status = -1;
1233 if (sc->nexus_list.tqh_first)
1234 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect;
1235 return 1;
1236 #endif
1237 }
1238 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/
1239 return (0);
1240 #ifdef DDB
1241 Debugger();
1242 #endif
1243 }
1244 #endif
1245 *status = -1;
1246 acb->xs->error = XS_SELTIMEOUT;
1247 if (sc->nexus_list.tqh_first)
1248 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect;
1249 return 1;
1250 }
1251 if (acb)
1252 target = acb->xs->xs_periph->periph_target;
1253 else
1254 target = 7;
1255 if (sist & SIOP_SIST_UDC) {
1256 #ifdef DEBUG
1257 if (acb == NULL)
1258 printf("%s: Unexpected disconnect with no active command?\n",
1259 sc->sc_dev.dv_xname);
1260 printf ("%s: target %d disconnected unexpectedly\n",
1261 sc->sc_dev.dv_xname, target);
1262 siopng_dump_registers(sc);
1263 siopng_dump(sc);
1264 #endif
1265 #if 0
1266 siopngabort (sc, rp, "siopngchkintr");
1267 #endif
1268 *status = STS_BUSY;
1269 if (sc->nexus_list.tqh_first)
1270 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect;
1271 return (acb != NULL);
1272 }
1273 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 ||
1274 rp->siop_dsps == 0xff02)) {
1275 #ifdef DEBUG
1276 if (siopng_debug & 0x100)
1277 printf ("%s: ID %02x disconnected TEMP %lx (+%lx) curbuf %lx curlen %lx buf %p len %lx dfifo %x dbc %x sstat1 %x starts %d acb %p\n",
1278 sc->sc_dev.dv_xname, 1 << target, rp->siop_temp,
1279 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0,
1280 acb->iob_curbuf, acb->iob_curlen,
1281 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb);
1282 #endif
1283 if (acb == NULL) {
1284 printf("%s: Disconnect with no active command?\n",
1285 sc->sc_dev.dv_xname);
1286 return (0);
1287 }
1288 /*
1289 * XXXX need to update iob_curbuf/iob_curlen to reflect
1290 * current data transferred. If device disconnected in
1291 * the middle of a DMA block, they should already be set
1292 * by the phase change interrupt. If the disconnect
1293 * occurs on a DMA block boundary, we have to figure out
1294 * which DMA block it was.
1295 */
1296 if (acb->iob_len && rp->siop_temp) {
1297 int n = rp->siop_temp - sc->sc_scriptspa;
1298
1299 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen)
1300 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n",
1301 sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen,
1302 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen);
1303 if (n < Ent_datain)
1304 n = (n - Ent_dataout) / 16;
1305 else
1306 n = (n - Ent_datain) / 16;
1307 if (n <= 0 && n > DMAMAXIO)
1308 printf("TEMP invalid %d\n", n);
1309 else {
1310 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf;
1311 acb->iob_curlen = acb->ds.chain[n].datalen;
1312 }
1313 #ifdef DEBUG
1314 if (siopng_debug & 0x100) {
1315 printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n);
1316 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf,
1317 acb->iob_curlen);
1318 }
1319 #endif
1320 }
1321 /*
1322 * If data transfer was interrupted by disconnect, iob_curbuf
1323 * and iob_curlen should reflect the point of interruption.
1324 * Adjust the DMA chain so that the data transfer begins
1325 * at the appropriate place upon reselection.
1326 * XXX This should only be done on save data pointer message?
1327 */
1328 if (acb->iob_curlen) {
1329 int i, j;
1330
1331 #ifdef DEBUG
1332 if (siopng_debug & 0x100)
1333 printf ("%s: adjusting DMA chain\n",
1334 sc->sc_dev.dv_xname);
1335 if (rp->siop_dsps == 0xff02)
1336 printf ("%s: ID %02x disconnected without Save Data Pointers\n",
1337 sc->sc_dev.dv_xname, 1 << target);
1338 #endif
1339 for (i = 0; i < DMAMAXIO; ++i) {
1340 if (acb->ds.chain[i].datalen == 0)
1341 break;
1342 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf &&
1343 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf +
1344 acb->ds.chain[i].datalen))
1345 break;
1346 }
1347 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) {
1348 printf("couldn't find saved data pointer: ");
1349 printf("curbuf %lx curlen %lx i %d\n",
1350 acb->iob_curbuf, acb->iob_curlen, i);
1351 #ifdef DDB
1352 Debugger();
1353 #endif
1354 }
1355 #ifdef DEBUG
1356 if (siopng_debug & 0x100)
1357 printf(" chain[0]: %p/%lx -> %lx/%lx\n",
1358 acb->ds.chain[0].databuf,
1359 acb->ds.chain[0].datalen,
1360 acb->iob_curbuf,
1361 acb->iob_curlen);
1362 #endif
1363 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf;
1364 acb->ds.chain[0].datalen = acb->iob_curlen;
1365 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) {
1366 #ifdef DEBUG
1367 if (siopng_debug & 0x100)
1368 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j,
1369 acb->ds.chain[j].databuf,
1370 acb->ds.chain[j].datalen,
1371 acb->ds.chain[i].databuf,
1372 acb->ds.chain[i].datalen);
1373 #endif
1374 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf;
1375 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen;
1376 }
1377 if (j < DMAMAXIO)
1378 acb->ds.chain[j].datalen = 0;
1379 DCIAS(kvtop((void *)&acb->ds.chain));
1380 }
1381 ++sc->sc_tinfo[target].dconns;
1382 /*
1383 * add nexus to waiting list
1384 * clear nexus
1385 * try to start another command for another target/lun
1386 */
1387 acb->status = sc->sc_flags & SIOP_INTSOFF;
1388 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain);
1389 sc->sc_nexus = NULL; /* no current device */
1390 /* start script to wait for reselect */
1391 if (sc->sc_nexus == NULL)
1392 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect;
1393 /* XXXX start another command ? */
1394 if (sc->ready_list.tqh_first)
1395 siopng_sched(sc);
1396 #if 0
1397 else
1398 rp->siop_dcntl |= SIOP_DCNTL_STD;
1399 #endif
1400 return (0);
1401 }
1402 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) {
1403 int reselid = rp->siop_scratcha & 0x7f;
1404 int reselun = rp->siop_sfbr & 0x07;
1405
1406 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */
1407 #ifdef DEBUG
1408 if (siopng_debug & 0x100)
1409 printf ("%s: target ID %02x reselected dsps %lx\n",
1410 sc->sc_dev.dv_xname, reselid,
1411 rp->siop_dsps);
1412 if ((rp->siop_sfbr & 0x80) == 0)
1413 printf("%s: Reselect message in was not identify: %x\n",
1414 sc->sc_dev.dv_xname, rp->siop_sfbr);
1415 #endif
1416 if (sc->sc_nexus) {
1417 #ifdef DEBUG
1418 if (siopng_debug & 0x100)
1419 printf ("%s: reselect ID %02x w/active\n",
1420 sc->sc_dev.dv_xname, reselid);
1421 #endif
1422 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain);
1423 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy
1424 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun);
1425 --sc->sc_active;
1426 }
1427 /*
1428 * locate acb of reselecting device
1429 * set sc->sc_nexus to acb
1430 */
1431 for (acb = sc->nexus_list.tqh_first; acb;
1432 acb = acb->chain.tqe_next) {
1433 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) ||
1434 reselun != (acb->msgout[0] & 0x07))
1435 continue;
1436 TAILQ_REMOVE(&sc->nexus_list, acb, chain);
1437 sc->sc_nexus = acb;
1438 sc->sc_flags |= acb->status;
1439 acb->status = 0;
1440 DCIAS(kvtop(&acb->stat[0]));
1441 rp->siop_dsa = kvtop((void *)&acb->ds);
1442 rp->siop_sxfer =
1443 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer;
1444 #ifndef FIXME
1445 rp->siop_scntl3 =
1446 sc->sc_sync[acb->xs->xs_periph->periph_target].scntl3;
1447 #endif
1448 break;
1449 }
1450 if (acb == NULL) {
1451 printf("%s: target ID %02x reselect nexus_list %p\n",
1452 sc->sc_dev.dv_xname, reselid,
1453 sc->nexus_list.tqh_first);
1454 panic("unable to find reselecting device");
1455 }
1456 dma_cachectl ((void *)acb, sizeof(*acb));
1457 rp->siop_temp = 0;
1458 rp->siop_dcntl |= SIOP_DCNTL_STD;
1459 return (0);
1460 }
1461 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) {
1462 #ifdef DEBUG
1463 u_short ctest2 = rp->siop_ctest2;
1464
1465 /* reselect was interrupted (by Sig_P or select) */
1466 if (siopng_debug & 0x100 ||
1467 (ctest2 & SIOP_CTEST2_SIGP) == 0)
1468 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n",
1469 sc->sc_dev.dv_xname, rp->siop_scntl1,
1470 ctest2, rp->siop_sfbr, istat, rp->siop_istat);
1471 #endif
1472 /* XXX assumes it was not select */
1473 if (sc->sc_nexus == NULL) {
1474 #ifdef DEBUG
1475 printf("%s: reselect interrupted, sc_nexus == NULL\n",
1476 sc->sc_dev.dv_xname);
1477 #if 0
1478 siopng_dump(sc);
1479 #ifdef DDB
1480 Debugger();
1481 #endif
1482 #endif
1483 #endif
1484 rp->siop_dcntl |= SIOP_DCNTL_STD;
1485 return(0);
1486 }
1487 target = sc->sc_nexus->xs->xs_periph->periph_target;
1488 rp->siop_temp = 0;
1489 rp->siop_dsa = kvtop((void *)&sc->sc_nexus->ds);
1490 rp->siop_sxfer = sc->sc_sync[target].sxfer;
1491 #ifndef FIXME
1492 rp->siop_scntl3 = sc->sc_sync[target].scntl3;
1493 #endif
1494 rp->siop_dsp = sc->sc_scriptspa;
1495 return (0);
1496 }
1497 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) {
1498 if (acb == NULL)
1499 printf("%s: Bad message-in with no active command?\n",
1500 sc->sc_dev.dv_xname);
1501 /* Unrecognized message in byte */
1502 dma_cachectl (&acb->msg[1],1);
1503 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n",
1504 sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl);
1505 /* what should be done here? */
1506 DCIAS(kvtop(&acb->msg[1]));
1507 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack;
1508 return (0);
1509 }
1510 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) {
1511 /* Status phase wasn't followed by message in phase? */
1512 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n",
1513 sc->sc_dev.dv_xname, rp->siop_sbcl, rp->siop_sbdl);
1514 if (rp->siop_sbcl == 0xa7) {
1515 /* It is now, just continue the script? */
1516 rp->siop_dcntl |= SIOP_DCNTL_STD;
1517 return (0);
1518 }
1519 }
1520 if (sist == 0 && dstat & SIOP_DSTAT_SIR) {
1521 dma_cachectl (&acb->stat[0], 1);
1522 dma_cachectl (&acb->msg[0], 1);
1523 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n",
1524 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1],
1525 rp->siop_sbcl);
1526 siopngreset (sc);
1527 *status = -1;
1528 return 0; /* siopngreset has cleaned up */
1529 }
1530 if (sist & SIOP_SIST_SGE)
1531 printf ("SIOP: SCSI Gross Error\n");
1532 if (sist & SIOP_SIST_PAR)
1533 printf ("SIOP: Parity Error\n");
1534 if (dstat & SIOP_DSTAT_IID)
1535 printf ("SIOP: Invalid instruction detected\n");
1536 bad_phase:
1537 /*
1538 * temporary panic for unhandled conditions
1539 * displays various things about the 53C720/770 status and registers
1540 * then panics.
1541 * XXXX need to clean this up to print out the info, reset, and continue
1542 */
1543 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds);
1544 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n",
1545 sc->sc_scriptspa, (unsigned)kvtop((void *)&acb->ds),
1546 (unsigned)kvtop((void *)__UNVOLATILE(rp)), rp->siop_dsp,
1547 *((long *)__UNVOLATILE(&rp->siop_dcmd)));
1548 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n",
1549 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa,
1550 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr);
1551 #ifdef DEBUG
1552 if (siopng_debug & 0x20)
1553 panic("siopngchkintr: **** temp ****");
1554 #endif
1555 #ifdef DDB
1556 Debugger ();
1557 #endif
1558 siopngreset (sc); /* hard reset */
1559 *status = -1;
1560 return 0; /* siopngreset cleaned up */
1561 }
1562
1563 void
1564 siopng_select(struct siop_softc *sc)
1565 {
1566 siop_regmap_p rp;
1567 struct siop_acb *acb = sc->sc_nexus;
1568
1569 #ifdef DEBUG
1570 if (siopng_debug & 1)
1571 printf ("%s: select ", sc->sc_dev.dv_xname);
1572 #endif
1573
1574 rp = sc->sc_siopp;
1575 if (acb->xs->xs_control & XS_CTL_POLL || siopng_no_dma) {
1576 sc->sc_flags |= SIOP_INTSOFF;
1577 sc->sc_flags &= ~SIOP_INTDEFER;
1578 if ((rp->siop_istat & 0x08) == 0) {
1579 rp->siop_sien = 0;
1580 rp->siop_dien = 0;
1581 }
1582 #if 0
1583 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) {
1584 sc->sc_flags &= ~SIOP_INTSOFF;
1585 if ((rp->siop_istat & 0x08) == 0) {
1586 rp->siop_sien = sc->sc_sien;
1587 rp->siop_dien = sc->sc_dien;
1588 }
1589 #endif
1590 }
1591 #ifdef DEBUG
1592 if (siopng_debug & 1)
1593 printf ("siopng_select: target %x cmd %02x ds %p\n",
1594 acb->xs->xs_periph->periph_target, acb->cmd.opcode,
1595 &sc->sc_nexus->ds);
1596 #endif
1597
1598 siopng_start(sc, acb->xs->xs_periph->periph_target,
1599 acb->xs->xs_periph->periph_lun,
1600 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft);
1601
1602 return;
1603 }
1604
1605 /*
1606 * 53C720/770 interrupt handler
1607 */
1608
1609 void
1610 siopngintr(register struct siop_softc *sc)
1611 {
1612 siop_regmap_p rp;
1613 u_char istat, dstat;
1614 u_short sist;
1615 int status;
1616 int s = splbio();
1617
1618 istat = sc->sc_istat;
1619 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) {
1620 splx(s);
1621 return;
1622 }
1623
1624 /* Got a valid interrupt on this device */
1625 rp = sc->sc_siopp;
1626 dstat = sc->sc_dstat;
1627 sist = sc->sc_sist;
1628 if (dstat & SIOP_DSTAT_SIR)
1629 sc->sc_intcode = rp->siop_dsps;
1630 sc->sc_istat = 0;
1631 #ifdef DEBUG
1632 if (siopng_debug & 1)
1633 printf ("%s: intr istat %x dstat %x sist %x\n",
1634 sc->sc_dev.dv_xname, istat, dstat, sist);
1635 if (!sc->sc_active) {
1636 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n",
1637 sc->sc_dev.dv_xname, istat, dstat, sist,
1638 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0);
1639 }
1640 #endif
1641
1642 #ifdef DEBUG
1643 if (siopng_debug & 5) {
1644 DCIAS(kvtop(&sc->sc_nexus->stat[0]));
1645 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n",
1646 sc->sc_dev.dv_xname, istat, dstat, sist,
1647 rp->siop_dsps, rp->siop_sbcl,
1648 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]);
1649 }
1650 #endif
1651 if (sc->sc_flags & SIOP_INTDEFER) {
1652 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF);
1653 rp->siop_sien = sc->sc_sien;
1654 rp->siop_dien = sc->sc_dien;
1655 }
1656 if (siopng_checkintr (sc, istat, dstat, sist, &status)) {
1657 #if 1
1658 if (status == 0xff)
1659 printf ("siopngintr: status == 0xff\n");
1660 #endif
1661 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) {
1662 #if 0
1663 if (rp->siop_sbcl & SIOP_BSY) {
1664 printf ("%s: SCSI bus busy at completion",
1665 sc->sc_dev.dv_xname);
1666 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n",
1667 sc->sc_nexus->xs->xs_periph->periph_target,
1668 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid,
1669 rp->siop_dsp - sc->sc_scriptspa);
1670 }
1671 #endif
1672 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ?
1673 sc->sc_nexus->stat[0] : -1);
1674 }
1675 }
1676 splx(s);
1677 }
1678
1679 /*
1680 * This is based on the Progressive Peripherals 33 MHz Zeus driver and will
1681 * not be correct for other 53c710 boards.
1682 *
1683 */
1684 void
1685 scsi_period_to_siopng(struct siop_softc *sc, int target)
1686 {
1687 int period, offset, sxfer, scntl3 = 0;
1688
1689 period = sc->sc_nexus->msg[4];
1690 offset = sc->sc_nexus->msg[5];
1691 #ifdef FIXME
1692 for (scntl3 = 1; scntl3 < 4; ++scntl3) {
1693 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3;
1694 if (sxfer >= 0 && sxfer <= 7)
1695 break;
1696 }
1697 if (scntl3 > 3) {
1698 printf("siopng sync: unable to compute sync params for period %dns\n",
1699 period * 4);
1700 /*
1701 * XXX need to pick a value we can do and renegotiate
1702 */
1703 sxfer = scntl3 = 0;
1704 } else {
1705 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ?
1706 offset : SIOP_MAX_OFFSET);
1707 #ifdef DEBUG_SYNC
1708 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x",
1709 period * 4, sxfer, scntl3);
1710 printf(" actual period %dns\n",
1711 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4));
1712 #endif /* DEBUG_SYNC */
1713 }
1714 #else /* FIXME */
1715 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET;
1716 sxfer |= 0x20; /* XXX XFERP: 5 */
1717 #ifndef FIXME
1718 if (period <= (50 / 4)) /* XXX */
1719 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */
1720 else if (period <= (100 / 4))
1721 scntl3 = 0x35; /* SCF: /2, CCF: /4 */
1722 else if (period <= (200 / 4))
1723 scntl3 = 0x55; /* SCF: /4, CCF: /4 */
1724 else
1725 scntl3 = 0xff; /* XXX ??? */
1726 #else
1727 scntl3 = 5;
1728 #endif
1729 #endif
1730 sc->sc_sync[target].sxfer = sxfer;
1731 sc->sc_sync[target].scntl3 = scntl3 |
1732 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS);
1733 #ifdef DEBUG_SYNC
1734 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3);
1735 #endif
1736 }
1737
1738 void
1739 siopng_dump_registers(struct siop_softc *sc)
1740 {
1741 siop_regmap_p rp = sc->sc_siopp;
1742
1743 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n",
1744 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3);
1745 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n",
1746 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg);
1747 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n",
1748 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl);
1749 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n",
1750 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2);
1751 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n",
1752 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3);
1753 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n",
1754 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6);
1755 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n",
1756 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0);
1757 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n",
1758 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl);
1759 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n",
1760 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3);
1761 printf(" istat %02x sien %04x sist %04x respid %04x\n",
1762 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid);
1763 printf(" sidl %04x sodl %04x sbdl %04x\n",
1764 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl);
1765 printf(" dsps %08lx dsp %08lx (+%lx)\n",
1766 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ?
1767 rp->siop_dsp - sc->sc_scriptspa : 0);
1768 printf(" dsa %08lx temp %08lx dnad %08lx\n",
1769 rp->siop_dsa, rp->siop_temp, rp->siop_dnad);
1770 printf(" scratcha %08lx scratchb %08lx adder %08lx\n",
1771 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder);
1772 }
1773
1774 #ifdef DEBUG
1775
1776 #if SIOP_TRACE_SIZE
1777 void
1778 siopng_dump_trace(void)
1779 {
1780 int i;
1781
1782 printf("siopng trace: next index %d\n", siopng_trix);
1783 i = siopng_trix;
1784 do {
1785 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i],
1786 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]);
1787 i = (i + 4) & (SIOP_TRACE_SIZE - 1);
1788 } while (i != siopng_trix);
1789 }
1790 #endif
1791
1792 void
1793 siopng_dump_acb(struct siop_acb *acb)
1794 {
1795 u_char *b = (u_char *) &acb->cmd;
1796 int i;
1797
1798 printf("acb@%p ", acb);
1799 if (acb->xs == NULL) {
1800 printf("<unused>\n");
1801 return;
1802 }
1803 printf("(%d:%d) flags %2x clen %2d cmd ",
1804 acb->xs->xs_periph->periph_target,
1805 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen);
1806 for (i = acb->clen; i; --i)
1807 printf(" %02x", *b++);
1808 printf("\n");
1809 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data,
1810 acb->xs->datalen);
1811 printf("va %p:%lx ", acb->iob_buf, acb->iob_len);
1812 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen);
1813 }
1814
1815 void
1816 siopng_dump(struct siop_softc *sc)
1817 {
1818 struct siop_acb *acb;
1819 siop_regmap_p rp = sc->sc_siopp;
1820 int s;
1821 int i;
1822
1823 s = splbio();
1824 #if SIOP_TRACE_SIZE
1825 siopng_dump_trace();
1826 #endif
1827 printf("%s@%p regs %p istat %x\n",
1828 sc->sc_dev.dv_xname, sc, rp, rp->siop_istat);
1829 if ((acb = sc->free_list.tqh_first) > 0) {
1830 printf("Free list:\n");
1831 while (acb) {
1832 siopng_dump_acb(acb);
1833 acb = acb->chain.tqe_next;
1834 }
1835 }
1836 if ((acb = sc->ready_list.tqh_first) > 0) {
1837 printf("Ready list:\n");
1838 while (acb) {
1839 siopng_dump_acb(acb);
1840 acb = acb->chain.tqe_next;
1841 }
1842 }
1843 if ((acb = sc->nexus_list.tqh_first) > 0) {
1844 printf("Nexus list:\n");
1845 while (acb) {
1846 siopng_dump_acb(acb);
1847 acb = acb->chain.tqe_next;
1848 }
1849 }
1850 if (sc->sc_nexus) {
1851 printf("Nexus:\n");
1852 siopng_dump_acb(sc->sc_nexus);
1853 }
1854 for (i = 0; i < 8; ++i) {
1855 if (sc->sc_tinfo[i].cmds > 2) {
1856 printf("tgt %d: cmds %d disc %d lubusy %x\n",
1857 i, sc->sc_tinfo[i].cmds,
1858 sc->sc_tinfo[i].dconns,
1859 sc->sc_tinfo[i].lubusy);
1860 }
1861 }
1862 splx(s);
1863 }
1864 #endif
NetBSD on the FriendlyARM MINI2440