1 /* $NetBSD: siop2.c,v 1.44 2019/11/10 21:16:22 chs 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 1.44 2019/11/10 21:16:22 chs 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 <dev/scsipi/scsi_all.h>
85 #include <dev/scsipi/scsipi_all.h>
86 #include <dev/scsipi/scsiconf.h>
87 #include <machine/cpu.h>
88 #ifdef __m68k__
89 #include <m68k/include/cacheops.h>
90 #else
91 #define DCIAS(pa) dma_cachectl((void *)(pa), 1)
92 #endif
93 #include <amiga/amiga/custom.h>
94 #include <amiga/amiga/device.h>
95 #include <amiga/amiga/isr.h>
96
97 #define ARCH_720
98
99 #include <amiga/dev/siopreg.h>
100 #include <amiga/dev/siopvar.h>
101
102 /*
103 * SCSI delays
104 * In u-seconds, primarily for state changes on the SPC.
105 */
106 #define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */
107 #define SCSI_DATA_WAIT 500000 /* wait per data in/out step */
108 #define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */
109
110 void siopng_select(struct siop_softc *);
111 void siopngabort(struct siop_softc *, siop_regmap_p, const char *);
112 void siopngerror(struct siop_softc *, siop_regmap_p, u_char);
113 int siopng_checkintr(struct siop_softc *, u_char, u_char, u_short, int *);
114 void siopngreset(struct siop_softc *);
115 void siopngsetdelay(int);
116 void siopng_scsidone(struct siop_acb *, int);
117 void siopng_timeout(void *);
118 void siopng_sched(struct siop_softc *);
119 void siopng_poll(struct siop_softc *, struct siop_acb *);
120 void siopngintr(struct siop_softc *);
121 void scsi_period_to_siopng(struct siop_softc *, int);
122 void siopng_start(struct siop_softc *, int, int, u_char *, int, u_char *, int);
123 void siopng_dump_acb(struct siop_acb *);
124
125 /* 53C720/770 script */
126
127 #include <amiga/dev/siop2_script.out>
128
129 /* default to not inhibit sync negotiation on any drive */
130 u_char siopng_inhibit_sync[16] = {
131 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
132 }; /* initialize, so patchable */
133
134 u_char siopng_inhibit_wide[16] = {
135 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
136 }; /* initialize, so patchable */
137
138 u_char siopng_allow_disc[16] = {
139 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
140 };
141
142 int siopng_no_dma = 0;
143
144 int siopng_reset_delay = 250; /* delay after reset, in milleseconds */
145
146 int siopng_cmd_wait = SCSI_CMD_WAIT;
147 int siopng_data_wait = SCSI_DATA_WAIT;
148 int siopng_init_wait = SCSI_INIT_WAIT;
149
150 /*#define DEBUG_SYNC*/
151
152 #ifdef DEBUG
153 /*
154 * 0x01 - full debug
155 * 0x02 - DMA chaining
156 * 0x04 - siopngintr
157 * 0x08 - phase mismatch
158 * 0x10 - <not used>
159 * 0x20 - panic on unhandled exceptions
160 * 0x100 - disconnect/reselect
161 */
162 int siopng_debug = 0;
163 int siopngsync_debug = 0;
164 int siopngdma_hits = 0;
165 int siopngdma_misses = 0;
166 int siopngchain_ints = 0;
167 int siopngstarts = 0;
168 int siopngints = 0;
169 int siopngphmm = 0;
170 #define SIOP_TRACE_SIZE 128
171 #define SIOP_TRACE(a,b,c,d) \
172 siopng_trbuf[siopng_trix] = (a); \
173 siopng_trbuf[siopng_trix+1] = (b); \
174 siopng_trbuf[siopng_trix+2] = (c); \
175 siopng_trbuf[siopng_trix+3] = (d); \
176 siopng_trix = (siopng_trix + 4) & (SIOP_TRACE_SIZE - 1);
177 u_char siopng_trbuf[SIOP_TRACE_SIZE];
178 int siopng_trix;
179 void siopng_dump(struct siop_softc *);
180 void siopng_dump_trace(void);
181 #else
182 #define SIOP_TRACE(a,b,c,d)
183 #endif
184
185
186 static const char *siopng_chips[] = {
187 "720", "720SE", "770", "0x3",
188 "810A", "0x5", "0x6", "0x7",
189 "0x8", "0x9", "0xA", "0xB",
190 "0xC", "0xD", "0xE", "0xF",
191 };
192
193 /*
194 * default minphys routine for siopng based controllers
195 */
196 void
siopng_minphys(struct buf * bp)197 siopng_minphys(struct buf *bp)
198 {
199
200 /*
201 * No max transfer at this level.
202 */
203 minphys(bp);
204 }
205
206 /*
207 * used by specific siopng controller
208 *
209 */
210 void
siopng_scsipi_request(struct scsipi_channel * chan,scsipi_adapter_req_t req,void * arg)211 siopng_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req,
212 void *arg)
213 {
214 struct scsipi_xfer *xs;
215 #ifdef DIAGNOSTIC
216 struct scsipi_periph *periph;
217 #endif
218 struct siop_acb *acb;
219 struct siop_softc *sc = device_private(chan->chan_adapter->adapt_dev);
220 int flags, s;
221
222 switch (req) {
223 case ADAPTER_REQ_RUN_XFER:
224 xs = arg;
225 #ifdef DIAGNOSTIC
226 periph = xs->xs_periph;
227 #endif
228 flags = xs->xs_control;
229
230 /* XXXX ?? */
231 if (flags & XS_CTL_DATA_UIO)
232 panic("siopng: scsi data uio requested");
233
234 /* XXXX ?? */
235 if (sc->sc_nexus && flags & XS_CTL_POLL)
236 /* panic("siopng_scsicmd: busy");*/
237 printf("siopng_scsicmd: busy\n");
238
239 s = splbio();
240 acb = sc->free_list.tqh_first;
241 if (acb) {
242 TAILQ_REMOVE(&sc->free_list, acb, chain);
243 }
244 splx(s);
245
246 #ifdef DIAGNOSTIC
247 /*
248 * This should never happen as we track the resources
249 * in the mid-layer.
250 */
251 if (acb == NULL) {
252 scsipi_printaddr(periph);
253 printf("unable to allocate acb\n");
254 panic("siopng_scsipi_request");
255 }
256 #endif
257 acb->flags = ACB_ACTIVE;
258 acb->xs = xs;
259 memcpy(&acb->cmd, xs->cmd, xs->cmdlen);
260 acb->clen = xs->cmdlen;
261 acb->daddr = xs->data;
262 acb->dleft = xs->datalen;
263
264 s = splbio();
265 TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain);
266
267 if (sc->sc_nexus == NULL)
268 siopng_sched(sc);
269
270 splx(s);
271
272 if (flags & XS_CTL_POLL || siopng_no_dma)
273 siopng_poll(sc, acb);
274 return;
275
276 case ADAPTER_REQ_GROW_RESOURCES:
277 return;
278
279 case ADAPTER_REQ_SET_XFER_MODE:
280 return;
281 }
282 }
283
284 void
siopng_poll(struct siop_softc * sc,struct siop_acb * acb)285 siopng_poll(struct siop_softc *sc, struct siop_acb *acb)
286 {
287 siop_regmap_p rp = sc->sc_siopp;
288 struct scsipi_xfer *xs = acb->xs;
289 int i;
290 int status;
291 u_char istat;
292 u_char dstat;
293 u_short sist;
294 int s;
295 int to;
296
297 s = splbio();
298 to = xs->timeout / 1000;
299 if (sc->nexus_list.tqh_first)
300 printf("%s: siopng_poll called with disconnected device\n",
301 device_xname(sc->sc_dev));
302 for (;;) {
303 /* use cmd_wait values? */
304 i = 50000;
305 /* XXX spl0(); */
306 while (((istat = rp->siop_istat) &
307 (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) {
308 if (--i <= 0) {
309 #ifdef DEBUG
310 printf ("waiting: tgt %d cmd %02x sbcl %02x istat %02x sbdl %04x\n dsp %lx (+%lx) dcmd %lx ds %p timeout %d\n",
311 xs->xs_periph->periph_target, acb->cmd.opcode,
312 rp->siop_sbcl, istat, rp->siop_sbdl, rp->siop_dsp,
313 rp->siop_dsp - sc->sc_scriptspa,
314 *((volatile long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout);
315 #endif
316 i = 50000;
317 --to;
318 if (to <= 0) {
319 siopngreset(sc);
320 return;
321 }
322 }
323 delay(20);
324 }
325 sist = rp->siop_sist;
326 dstat = rp->siop_dstat;
327 if (siopng_checkintr(sc, istat, dstat, sist, &status)) {
328 if (acb != sc->sc_nexus)
329 printf("%s: siopng_poll disconnected device completed\n",
330 device_xname(sc->sc_dev));
331 else if ((sc->sc_flags & SIOP_INTDEFER) == 0) {
332 sc->sc_flags &= ~SIOP_INTSOFF;
333 rp->siop_sien = sc->sc_sien;
334 rp->siop_dien = sc->sc_dien;
335 }
336 siopng_scsidone(sc->sc_nexus, status);
337 }
338 if (xs->xs_status & XS_STS_DONE)
339 break;
340 }
341 splx(s);
342 }
343
344 /*
345 * start next command that's ready
346 */
347 void
siopng_sched(struct siop_softc * sc)348 siopng_sched(struct siop_softc *sc)
349 {
350 struct scsipi_periph *periph;
351 struct siop_acb *acb;
352 int i;
353
354 #ifdef DEBUG
355 if (sc->sc_nexus) {
356 printf("%s: siopng_sched- nexus %p/%d ready %p/%d\n",
357 device_xname(sc->sc_dev), sc->sc_nexus,
358 sc->sc_nexus->xs->xs_periph->periph_target,
359 sc->ready_list.tqh_first,
360 sc->ready_list.tqh_first->xs->xs_periph->periph_target);
361 return;
362 }
363 #endif
364 for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) {
365 periph = acb->xs->xs_periph;
366 i = periph->periph_target;
367 if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) {
368 struct siop_tinfo *ti = &sc->sc_tinfo[i];
369
370 TAILQ_REMOVE(&sc->ready_list, acb, chain);
371 sc->sc_nexus = acb;
372 periph = acb->xs->xs_periph;
373 ti = &sc->sc_tinfo[periph->periph_target];
374 ti->lubusy |= (1 << periph->periph_lun);
375 break;
376 }
377 }
378
379 if (acb == NULL) {
380 #ifdef DEBUGXXX
381 printf("%s: siopng_sched didn't find ready command\n",
382 device_xname(sc->sc_dev));
383 #endif
384 return;
385 }
386
387 if (acb->xs->xs_control & XS_CTL_RESET)
388 siopngreset(sc);
389
390 #if 0
391 acb->cmd.bytes[0] |= periph->periph_lun << 5; /* XXXX */
392 #endif
393 ++sc->sc_active;
394 siopng_select(sc);
395 }
396
397 void
siopng_scsidone(struct siop_acb * acb,int stat)398 siopng_scsidone(struct siop_acb *acb, int stat)
399 {
400 struct scsipi_xfer *xs;
401 struct scsipi_periph *periph;
402 struct siop_softc *sc;
403 int dosched = 0;
404
405 if (acb == NULL || (xs = acb->xs) == NULL) {
406 #ifdef DIAGNOSTIC
407 printf("siopng_scsidone: NULL acb or scsipi_xfer\n");
408 #if defined(DEBUG) && defined(DDB)
409 Debugger();
410 #endif
411 #endif
412 return;
413 }
414
415 callout_stop(&xs->xs_callout);
416
417 periph = xs->xs_periph;
418 sc = device_private(periph->periph_channel->chan_adapter->adapt_dev);
419
420 xs->status = stat;
421 xs->resid = 0; /* XXXX */
422
423 if (xs->error == XS_NOERROR) {
424 if (stat == SCSI_CHECK || stat == SCSI_BUSY)
425 xs->error = XS_BUSY;
426 }
427
428 /*
429 * Remove the ACB from whatever queue it's on. We have to do a bit of
430 * a hack to figure out which queue it's on. Note that it is *not*
431 * necessary to cdr down the ready queue, but we must cdr down the
432 * nexus queue and see if it's there, so we can mark the unit as no
433 * longer busy. This code is sickening, but it works.
434 */
435 if (acb == sc->sc_nexus) {
436 sc->sc_nexus = NULL;
437 sc->sc_tinfo[periph->periph_target].lubusy &=
438 ~(1<<periph->periph_lun);
439 if (sc->ready_list.tqh_first)
440 dosched = 1; /* start next command */
441 --sc->sc_active;
442 SIOP_TRACE('d','a',stat,0)
443 } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) {
444 TAILQ_REMOVE(&sc->ready_list, acb, chain);
445 SIOP_TRACE('d','r',stat,0)
446 } else {
447 register struct siop_acb *acb2;
448 for (acb2 = sc->nexus_list.tqh_first; acb2;
449 acb2 = acb2->chain.tqe_next)
450 if (acb2 == acb) {
451 TAILQ_REMOVE(&sc->nexus_list, acb, chain);
452 sc->sc_tinfo[periph->periph_target].lubusy
453 &= ~(1<<periph->periph_lun);
454 --sc->sc_active;
455 break;
456 }
457 if (acb2)
458 ;
459 else if (acb->chain.tqe_next) {
460 TAILQ_REMOVE(&sc->ready_list, acb, chain);
461 --sc->sc_active;
462 } else {
463 printf("%s: can't find matching acb\n",
464 device_xname(sc->sc_dev));
465 #ifdef DDB
466 /* Debugger(); */
467 #endif
468 }
469 SIOP_TRACE('d','n',stat,0);
470 }
471 /* Put it on the free list. */
472 acb->flags = ACB_FREE;
473 TAILQ_INSERT_HEAD(&sc->free_list, acb, chain);
474
475 sc->sc_tinfo[periph->periph_target].cmds++;
476
477 scsipi_done(xs);
478
479 if (dosched && sc->sc_nexus == NULL)
480 siopng_sched(sc);
481 }
482
483 void
siopngabort(register struct siop_softc * sc,siop_regmap_p rp,const char * where)484 siopngabort(register struct siop_softc *sc, siop_regmap_p rp, const char *where)
485 {
486 #ifdef fix_this
487 int i;
488 #endif
489
490 printf ("%s: abort %s: dstat %02x, istat %02x sist %04x sien %04x sbcl %02x\n",
491 device_xname(sc->sc_dev),
492 where, rp->siop_dstat, rp->siop_istat, rp->siop_sist,
493 rp->siop_sien, rp->siop_sbcl);
494 siopng_dump_registers(sc);
495
496 if (sc->sc_active > 0) {
497 #ifdef TODO
498 SET_SBIC_cmd (rp, SBIC_CMD_ABORT);
499 WAIT_CIP (rp);
500
501 GET_SBIC_asr (rp, asr);
502 if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI))
503 {
504 /* ok, get more drastic.. */
505
506 SET_SBIC_cmd (rp, SBIC_CMD_RESET);
507 delay(25);
508 SBIC_WAIT(rp, SBIC_ASR_INT, 0);
509 GET_SBIC_csr (rp, csr); /* clears interrupt also */
510
511 return;
512 }
513
514 do
515 {
516 SBIC_WAIT (rp, SBIC_ASR_INT, 0);
517 GET_SBIC_csr (rp, csr);
518 }
519 while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1)
520 && (csr != SBIC_CSR_CMD_INVALID));
521 #endif
522
523 /* lets just hope it worked.. */
524 #ifdef fix_this
525 for (i = 0; i < 2; ++i) {
526 if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] !=
527 sc->sc_cur) {
528 printf ("siopngabort: cleanup!\n");
529 sc->sc_iob[i].sc_xs = NULL;
530 }
531 }
532 #endif /* fix_this */
533 /* sc->sc_active = 0; */
534 }
535 }
536
537 void
siopnginitialize(struct siop_softc * sc)538 siopnginitialize(struct siop_softc *sc)
539 {
540 int i;
541 u_int inhibit_sync;
542 extern u_long scsi_nosync;
543 extern int shift_nosync;
544
545 /*
546 * Need to check that scripts is on a long word boundary
547 * Also should verify that dev doesn't span non-contiguous
548 * physical pages.
549 */
550 sc->sc_scriptspa = kvtop((void *)__UNCONST(siopng_scripts));
551
552 /*
553 * malloc sc_acb to ensure that DS is on a long word boundary.
554 */
555
556 sc->sc_acb = malloc(sizeof(struct siop_acb) * SIOP_NACB,
557 M_DEVBUF, M_WAITOK);
558
559 sc->sc_tcp[1] = 1000 / sc->sc_clock_freq;
560 sc->sc_tcp[2] = 1500 / sc->sc_clock_freq;
561 sc->sc_tcp[3] = 2000 / sc->sc_clock_freq;
562 sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */
563 if (sc->sc_minsync < 25)
564 sc->sc_minsync = 25;
565 sc->sc_minsync >>= 1; /* Using clock doubler, allow Ultra */
566 if (sc->sc_clock_freq <= 25) {
567 sc->sc_dcntl |= 0x80; /* SCLK/1 */
568 sc->sc_tcp[0] = sc->sc_tcp[1];
569 } else if (sc->sc_clock_freq <= 37) {
570 sc->sc_dcntl |= 0x40; /* SCLK/1.5 */
571 sc->sc_tcp[0] = sc->sc_tcp[2];
572 } else if (sc->sc_clock_freq <= 50) {
573 sc->sc_dcntl |= 0x00; /* SCLK/2 */
574 sc->sc_tcp[0] = sc->sc_tcp[3];
575 } else {
576 sc->sc_dcntl |= 0xc0; /* SCLK/3 */
577 sc->sc_tcp[0] = 3000 / sc->sc_clock_freq;
578 }
579
580 if (scsi_nosync) {
581 inhibit_sync = (scsi_nosync >> shift_nosync) & 0xffff;
582 shift_nosync += 16; /* XXX maxtarget */
583 #ifdef DEBUG
584 if (inhibit_sync)
585 printf("%s: Inhibiting synchronous transfer %02x\n",
586 device_xname(sc->sc_dev), inhibit_sync);
587 #endif
588 for (i = 0; i < 16; ++i) /* XXX maxtarget */
589 if (inhibit_sync & (1 << i))
590 siopng_inhibit_sync[i] = 1;
591 }
592
593 siopngreset (sc);
594 }
595
596 void
siopng_timeout(void * arg)597 siopng_timeout(void *arg)
598 {
599 struct siop_acb *acb;
600 struct scsipi_periph *periph;
601 struct siop_softc *sc;
602 int s;
603
604 acb = arg;
605 periph = acb->xs->xs_periph;
606 sc = device_private(periph->periph_channel->chan_adapter->adapt_dev);
607 scsipi_printaddr(periph);
608 printf("timed out\n");
609
610 s = splbio();
611
612 acb->xs->error = XS_TIMEOUT;
613 siopngreset(sc);
614
615 splx(s);
616 }
617
618 void
siopngreset(struct siop_softc * sc)619 siopngreset(struct siop_softc *sc)
620 {
621 siop_regmap_p rp;
622 u_int i, s;
623 u_short dummy;
624 struct siop_acb *acb;
625
626 rp = sc->sc_siopp;
627
628 if (sc->sc_flags & SIOP_ALIVE)
629 siopngabort(sc, rp, "reset");
630
631 printf("%s: ", device_xname(sc->sc_dev)); /* XXXX */
632
633 s = splbio();
634
635 /*
636 * Reset the chip
637 * XXX - is this really needed?
638 */
639 rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */
640 rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */
641 rp->siop_istat &= ~SIOP_ISTAT_RST;
642 /*
643 * Reset SCSI bus (do we really want this?)
644 */
645 rp->siop_sien = 0;
646 rp->siop_scntl1 |= SIOP_SCNTL1_RST;
647 delay(1);
648 rp->siop_scntl1 &= ~SIOP_SCNTL1_RST;
649
650 /*
651 * Set up various chip parameters
652 */
653 rp->siop_stest1 |= SIOP_STEST1_DBLEN; /* SCLK doubler enable */
654 delay(20);
655 rp->siop_stest3 |= SIOP_STEST3_HSC; /* Halt SCSI clock */
656 rp->siop_scntl3 = 0x15; /* SCF/CCF*/
657 rp->siop_stest1 |= SIOP_STEST1_DBLSEL; /* SCLK doubler select */
658 rp->siop_stest3 &= ~SIOP_STEST3_HSC; /* Clear Halt SCSI clock */
659 rp->siop_scntl0 = SIOP_ARB_FULL | /*SIOP_SCNTL0_EPC |*/ SIOP_SCNTL0_EPG;
660 rp->siop_dcntl = sc->sc_dcntl;
661 rp->siop_dmode = 0xc0; /* XXX burst length */
662 rp->siop_sien = 0x00; /* don't enable interrupts yet */
663 rp->siop_dien = 0x00; /* don't enable interrupts yet */
664 rp->siop_scid = sc->sc_channel.chan_id |
665 SIOP_SCID_RRE | SIOP_SCID_SRE;
666 rp->siop_respid = 1 << sc->sc_channel.chan_id;
667 rp->siop_dwt = 0x00;
668 rp->siop_stime0 = 0x0c; /* XXXXX check */
669
670 /* will need to re-negotiate sync xfers */
671 memset(&sc->sc_sync, 0, sizeof (sc->sc_sync));
672
673 i = rp->siop_istat;
674 if (i & SIOP_ISTAT_SIP)
675 dummy = rp->siop_sist;
676 if (i & SIOP_ISTAT_DIP)
677 dummy = rp->siop_dstat;
678
679 __USE(dummy);
680 splx (s);
681
682 delay (siopng_reset_delay * 1000);
683
684 /*
685 * is lower half unterminated?
686 */
687 if ((rp->siop_sbdl & 0x00ff) == 0x00ff) {
688 printf(" no SCSI termination, host adapter deactivated.\n");
689 sc->sc_channel.chan_ntargets = 0; /* XXX */
690 sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF);
691 /* disable SCSI and DMA interrupts */
692 sc->sc_sien = 0;
693 sc->sc_dien = 0;
694 rp->siop_sien = sc->sc_sien;
695 rp->siop_dien = sc->sc_dien;
696
697 return;
698 }
699
700 /*
701 * Check if upper half of SCSI bus is unterminated, and disallow
702 * disconnections if it appears to be unterminated.
703 */
704 if ((rp->siop_sbdl & 0xff00) == 0xff00) {
705 printf(" NO WIDE TERM");
706 /* XXX need to restrict maximum target ID as well? */
707 sc->sc_channel.chan_ntargets = 8;
708 for (i = 0; i < 16; ++i) {
709 siopng_allow_disc[i] = 0;
710 siopng_inhibit_wide[i] |= 0x80;
711 }
712 }
713
714 printf("siopng type %s id %d reset V%d\n",
715 siopng_chips[rp->siop_macntl>>4],
716 sc->sc_channel.chan_ntargets,
717 rp->siop_ctest3 >> 4);
718
719 if ((sc->sc_flags & SIOP_ALIVE) == 0) {
720 TAILQ_INIT(&sc->ready_list);
721 TAILQ_INIT(&sc->nexus_list);
722 TAILQ_INIT(&sc->free_list);
723 sc->sc_nexus = NULL;
724 acb = sc->sc_acb;
725 memset(acb, 0, sizeof(struct siop_acb) * SIOP_NACB);
726 for (i = 0; i < SIOP_NACB; i++) {
727 TAILQ_INSERT_TAIL(&sc->free_list, acb, chain);
728 acb++;
729 }
730 memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo));
731 } else {
732 if (sc->sc_nexus != NULL) {
733 sc->sc_nexus->xs->error = XS_RESET;
734 siopng_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]);
735 }
736 while ((acb = sc->nexus_list.tqh_first) > 0) {
737 acb->xs->error = XS_RESET;
738 siopng_scsidone(acb, acb->stat[0]);
739 }
740 }
741
742 sc->sc_flags |= SIOP_ALIVE;
743 sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF);
744 /* enable SCSI and DMA interrupts */
745 sc->sc_sien = SIOP_SIEN_MA | SIOP_SIEN_STO | /*SIOP_SIEN_GEN |*/
746 /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | SIOP_SIEN_UDC |
747 SIOP_SIEN_RST | SIOP_SIEN_PAR;
748 sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR |
749 /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID;
750 rp->siop_sien = sc->sc_sien;
751 rp->siop_dien = sc->sc_dien;
752 /*siopng_dump_registers(sc);*/
753 }
754
755 /*
756 * Setup Data Storage for 53C720/770 and start SCRIPTS processing
757 */
758
759 void
siopng_start(struct siop_softc * sc,int target,int lun,u_char * cbuf,int clen,u_char * buf,int len)760 siopng_start(struct siop_softc *sc, int target, int lun, u_char *cbuf,
761 int clen, u_char *buf, int len)
762 {
763 siop_regmap_p rp = sc->sc_siopp;
764 int nchain;
765 int count, tcount;
766 char *addr, *dmaend;
767 struct siop_acb *acb = sc->sc_nexus;
768 #ifdef DEBUG
769 int i;
770 #endif
771
772 #ifdef DEBUG
773 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) {
774 printf ("ACK! siopng was busy: rp %p script %p dsa %p active %ld\n",
775 rp, &siopng_scripts, &acb->ds, sc->sc_active);
776 printf ("istat %02x sfbr %02x respid %02x sien %04x dien %02x\n",
777 rp->siop_istat, rp->siop_sfbr, rp->siop_respid,
778 rp->siop_sien, rp->siop_dien);
779 #ifdef DDB
780 /*Debugger();*/
781 #endif
782 }
783 #endif
784 acb->msgout[0] = MSG_IDENTIFY | lun;
785 if (siopng_allow_disc[target] & 2 ||
786 (siopng_allow_disc[target] && len == 0))
787 acb->msgout[0] = MSG_IDENTIFY_DR | lun;
788 acb->status = 0;
789 acb->stat[0] = -1;
790 acb->msg[0] = -1;
791 acb->ds.scsi_addr = (target << 16) | (sc->sc_sync[target].sxfer << 8) |
792 (sc->sc_sync[target].scntl3 << 24);
793 acb->ds.idlen = 1;
794 acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]);
795 acb->ds.cmdlen = clen;
796 acb->ds.cmdbuf = (char *) kvtop(cbuf);
797 acb->ds.stslen = 1;
798 acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]);
799 acb->ds.msglen = 1;
800 acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]);
801 acb->msg[1] = -1;
802 acb->ds.msginlen = 1;
803 acb->ds.extmsglen = 1;
804 acb->ds.synmsglen = 3;
805 acb->ds.msginbuf = acb->ds.msgbuf + 1;
806 acb->ds.extmsgbuf = acb->ds.msginbuf + 1;
807 acb->ds.synmsgbuf = acb->ds.extmsgbuf + 1;
808 memset(&acb->ds.chain, 0, sizeof (acb->ds.chain));
809
810 if (sc->sc_sync[target].state == NEG_WIDE) {
811 if (siopng_inhibit_wide[target]) {
812 sc->sc_sync[target].state = NEG_SYNC;
813 sc->sc_sync[target].scntl3 &= ~SIOP_SCNTL3_EWS;
814 #ifdef DEBUG
815 if (siopngsync_debug)
816 printf ("Forcing target %d narrow\n", target);
817 #endif
818 }
819 else {
820 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */
821 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */
822 acb->msg[2] = -1;
823 acb->msgout[1] = MSG_EXT_MESSAGE;
824 acb->msgout[2] = 2;
825 acb->msgout[3] = MSG_WIDE_REQ;
826 acb->msgout[4] = 1;
827 acb->ds.idlen = 5;
828 acb->ds.synmsglen = 2;
829 sc->sc_sync[target].state = NEG_WAITW;
830 #ifdef DEBUG
831 if (siopngsync_debug)
832 printf("Sending wide request to target %d\n", target);
833 #endif
834 }
835 }
836 if (sc->sc_sync[target].state == NEG_SYNC) {
837 if (siopng_inhibit_sync[target]) {
838 sc->sc_sync[target].state = NEG_DONE;
839 sc->sc_sync[target].scntl3 = 5 | /* XXX */
840 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */
841 sc->sc_sync[target].sxfer = 0;
842 #ifdef DEBUG
843 if (siopngsync_debug)
844 printf ("Forcing target %d asynchronous\n", target);
845 #endif
846 }
847 else {
848 sc->sc_sync[target].scntl3 = 0x15 | /* XXX */
849 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */
850 acb->msg[2] = -1;
851 acb->msgout[1] = MSG_EXT_MESSAGE;
852 acb->msgout[2] = 3;
853 acb->msgout[3] = MSG_SYNC_REQ;
854 #ifdef MAXTOR_SYNC_KLUDGE
855 acb->msgout[4] = 50 / 4; /* ask for ridiculous period */
856 #else
857 acb->msgout[4] = sc->sc_minsync;
858 #endif
859 acb->msgout[5] = SIOP_MAX_OFFSET;
860 acb->ds.idlen = 6;
861 sc->sc_sync[target].state = NEG_WAITS;
862 #ifdef DEBUG
863 if (siopngsync_debug)
864 printf ("Sending sync request to target %d\n", target);
865 #endif
866 }
867 }
868
869 /*
870 * Build physical DMA addresses for scatter/gather I/O
871 */
872 acb->iob_buf = buf;
873 acb->iob_len = len;
874 acb->iob_curbuf = acb->iob_curlen = 0;
875 nchain = 0;
876 count = len;
877 addr = buf;
878 dmaend = NULL;
879 while (count > 0) {
880 acb->ds.chain[nchain].databuf = (char *) kvtop (addr);
881 if (count < (tcount = PAGE_SIZE - ((int) addr & PGOFSET)))
882 tcount = count;
883
884 #if DEBUG_ONLY_IF_DESPERATE
885 printf("chain[%d]: count %d tcount %d vaddr %p paddr %p\n",
886 nchain, count, tcount, addr,
887 acb->ds.chain[nchain].databuf);
888 #endif
889 acb->ds.chain[nchain].datalen = tcount;
890 addr += tcount;
891 count -= tcount;
892 if (acb->ds.chain[nchain].databuf == dmaend) {
893 dmaend += acb->ds.chain[nchain].datalen;
894 acb->ds.chain[nchain].datalen = 0;
895 acb->ds.chain[--nchain].datalen += tcount;
896 #ifdef DEBUG
897 ++siopngdma_hits;
898 #endif
899 }
900 else {
901 dmaend = acb->ds.chain[nchain].databuf +
902 acb->ds.chain[nchain].datalen;
903 acb->ds.chain[nchain].datalen = tcount;
904 #ifdef DEBUG
905 if (nchain) /* Don't count miss on first one */
906 ++siopngdma_misses;
907 #endif
908 }
909 ++nchain;
910 }
911 #ifdef DEBUG
912 if (nchain != 1 && len != 0 && siopng_debug & 3) {
913 printf ("DMA chaining set: %d\n", nchain);
914 for (i = 0; i < nchain; ++i) {
915 printf (" [%d] %8p %lx\n", i, acb->ds.chain[i].databuf,
916 acb->ds.chain[i].datalen);
917 }
918 }
919 #endif
920
921 /* push data cache for all data the 53c720/770 needs to access */
922 dma_cachectl ((void *)acb, sizeof (struct siop_acb));
923 dma_cachectl (cbuf, clen);
924 if (buf != NULL && len != 0)
925 dma_cachectl (buf, len);
926 #ifdef DEBUG
927 if (siopng_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) {
928 printf ("ACK! siopng was busy at start: rp %p script %p dsa %p active %ld\n",
929 rp, &siopng_scripts, &acb->ds, sc->sc_active);
930 #ifdef DDB
931 /*Debugger();*/
932 #endif
933 }
934 #endif
935 if (sc->nexus_list.tqh_first == NULL) {
936 callout_reset(&acb->xs->xs_callout,
937 mstohz(acb->xs->timeout) + 1, siopng_timeout, acb);
938 if (rp->siop_istat & SIOP_ISTAT_CON)
939 printf("%s: siopng_select while connected?\n",
940 device_xname(sc->sc_dev));
941 rp->siop_temp = 0;
942 #ifndef FIXME
943 rp->siop_scntl3 = sc->sc_sync[target].scntl3;
944 #endif
945 amiga_membarrier();
946 rp->siop_dsa = kvtop((void *)&acb->ds);
947 amiga_membarrier();
948 rp->siop_dsp = sc->sc_scriptspa;
949 amiga_membarrier();
950 SIOP_TRACE('s',1,0,0)
951 } else {
952 if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) {
953 rp->siop_istat = SIOP_ISTAT_SIGP;
954 SIOP_TRACE('s',2,0,0);
955 }
956 else {
957 SIOP_TRACE('s',3,rp->siop_istat,0);
958 }
959 }
960 #ifdef DEBUG
961 ++siopngstarts;
962 #endif
963 }
964
965 /*
966 * Process a DMA or SCSI interrupt from the 53C720/770 SIOP
967 */
968
969 int
siopng_checkintr(struct siop_softc * sc,u_char istat,u_char dstat,u_short sist,int * status)970 siopng_checkintr(struct siop_softc *sc, u_char istat, u_char dstat,
971 u_short sist, int *status)
972 {
973 siop_regmap_p rp = sc->sc_siopp;
974 struct siop_acb *acb = sc->sc_nexus;
975 int target = 0;
976 int dfifo, dbc, sstat0, sstat1, sstat2;
977
978 dfifo = rp->siop_dfifo;
979 dbc = rp->siop_dbc0;
980 sstat0 = rp->siop_sstat0;
981 sstat1 = rp->siop_sstat1;
982 __USE(sstat1);
983 sstat2 = rp->siop_sstat2;
984 rp->siop_ctest3 |= SIOP_CTEST8_CLF;
985 while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT)
986 ;
987 rp->siop_ctest3 &= ~SIOP_CTEST8_CLF;
988 #ifdef DEBUG
989 ++siopngints;
990 #if 0
991 if (siopng_debug & 0x100) {
992 DCIAS(&acb->stat[0]); /* XXX */
993 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %x sbcl %x sts %x msg %x\n",
994 istat, dstat, sist, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]);
995 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n",
996 acb->msg[0], acb->msg[1], acb->msg[2],
997 acb->msg[3], acb->msg[4], acb->msg[5]);
998 }
999 #endif
1000 if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa ||
1001 rp->siop_dsp >= sc->sc_scriptspa + sizeof(siopng_scripts))) {
1002 printf ("%s: dsp not within script dsp %lx scripts %lx:%lx",
1003 device_xname(sc->sc_dev), rp->siop_dsp, sc->sc_scriptspa,
1004 sc->sc_scriptspa + sizeof(siopng_scripts));
1005 printf(" istat %x dstat %x sist %x\n",
1006 istat, dstat, sist);
1007 #ifdef DDB
1008 Debugger();
1009 #endif
1010 }
1011 #endif
1012 SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sist);
1013 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) {
1014 /* Normal completion status, or check condition */
1015 #ifdef DEBUG
1016 if (rp->siop_dsa != kvtop((void *)&acb->ds)) {
1017 printf ("siopng: invalid dsa: %lx %x\n", rp->siop_dsa,
1018 (unsigned)kvtop((void *)&acb->ds));
1019 panic("*** siopng DSA invalid ***");
1020 }
1021 #endif
1022 target = acb->xs->xs_periph->periph_target;
1023 if (sc->sc_sync[target].state == NEG_WAITW) {
1024 if (acb->msg[1] == 0xff)
1025 printf ("%s: target %d ignored wide request\n",
1026 device_xname(sc->sc_dev), target);
1027 else if (acb->msg[1] == MSG_REJECT)
1028 printf ("%s: target %d rejected wide request\n",
1029 device_xname(sc->sc_dev), target);
1030 else {
1031 printf("%s: target %d (wide) %02x %02x %02x %02x\n",
1032 device_xname(sc->sc_dev), target, acb->msg[1],
1033 acb->msg[2], acb->msg[3], acb->msg[4]);
1034 if (acb->msg[1] == MSG_EXT_MESSAGE &&
1035 acb->msg[2] == 2 &&
1036 acb->msg[3] == MSG_WIDE_REQ)
1037 sc->sc_sync[target].scntl3 = acb->msg[4] ?
1038 sc->sc_sync[target].scntl3 | SIOP_SCNTL3_EWS :
1039 sc->sc_sync[target].scntl3 & ~SIOP_SCNTL3_EWS;
1040 }
1041 sc->sc_sync[target].state = NEG_SYNC;
1042 }
1043 if (sc->sc_sync[target].state == NEG_WAITS) {
1044 if (acb->msg[1] == 0xff)
1045 printf ("%s: target %d ignored sync request\n",
1046 device_xname(sc->sc_dev), target);
1047 else if (acb->msg[1] == MSG_REJECT)
1048 printf ("%s: target %d rejected sync request\n",
1049 device_xname(sc->sc_dev), target);
1050 else
1051 /* XXX - need to set sync transfer parameters */
1052 printf("%s: target %d (sync) %02x %02x %02x\n",
1053 device_xname(sc->sc_dev), target, acb->msg[1],
1054 acb->msg[2], acb->msg[3]);
1055 sc->sc_sync[target].state = NEG_DONE;
1056 }
1057 dma_cachectl(&acb->stat[0], 1);
1058 *status = acb->stat[0];
1059 #ifdef DEBUG
1060 if (rp->siop_sbcl & SIOP_BSY) {
1061 /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n",
1062 rp, &siopng_scripts, &acb->ds);*/
1063 #ifdef DDB
1064 /*Debugger();*/
1065 #endif
1066 }
1067 if (acb->msg[0] != 0x00)
1068 printf("%s: message was not COMMAND COMPLETE: %x\n",
1069 device_xname(sc->sc_dev), acb->msg[0]);
1070 #endif
1071 if (sc->nexus_list.tqh_first)
1072 rp->siop_dcntl |= SIOP_DCNTL_STD;
1073 return 1;
1074 }
1075 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) {
1076 target = acb->xs->xs_periph->periph_target;
1077 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 2 &&
1078 acb->msg[3] == MSG_WIDE_REQ) {
1079 #ifdef DEBUG
1080 if (siopngsync_debug)
1081 printf ("wide msg in: %02x %02x %02x %02x %02x %02x\n",
1082 acb->msg[0], acb->msg[1], acb->msg[2],
1083 acb->msg[3], acb->msg[4], acb->msg[5]);
1084 #endif
1085 sc->sc_sync[target].scntl3 &= ~(SIOP_SCNTL3_EWS);
1086 if (acb->msg[2] == 2 &&
1087 acb->msg[3] == MSG_WIDE_REQ &&
1088 acb->msg[4] != 0) {
1089 sc->sc_sync[target].scntl3 |= SIOP_SCNTL3_EWS;
1090 printf ("%s: target %d now wide %d\n",
1091 device_xname(sc->sc_dev), target,
1092 acb->msg[4]);
1093 }
1094 rp->siop_scntl3 = sc->sc_sync[target].scntl3;
1095 amiga_membarrier();
1096 if (sc->sc_sync[target].state == NEG_WAITW) {
1097 sc->sc_sync[target].state = NEG_SYNC;
1098 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack;
1099 amiga_membarrier();
1100 return(0);
1101 }
1102 rp->siop_dcntl |= SIOP_DCNTL_STD;
1103 amiga_membarrier();
1104 sc->sc_sync[target].state = NEG_SYNC;
1105 return (0);
1106 }
1107 if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 &&
1108 acb->msg[3] == MSG_SYNC_REQ) {
1109 #ifdef DEBUG
1110 if (siopngsync_debug)
1111 printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n",
1112 acb->msg[0], acb->msg[1], acb->msg[2],
1113 acb->msg[3], acb->msg[4], acb->msg[5]);
1114 #endif
1115 sc->sc_sync[target].sxfer = 0;
1116 sc->sc_sync[target].scntl3 = 5 | /* XXX */
1117 (sc->sc_sync[target].scntl3 & 0x88); /* XXX */
1118 if (acb->msg[2] == 3 &&
1119 acb->msg[3] == MSG_SYNC_REQ &&
1120 acb->msg[5] != 0) {
1121 #ifdef MAXTOR_KLUDGE
1122 /*
1123 * Kludge for my Maxtor XT8580S
1124 * It accepts whatever we request, even
1125 * though it won't work. So we ask for
1126 * a short period than we can handle. If
1127 * the device says it can do it, use 208ns.
1128 * If the device says it can do less than
1129 * 100ns, then we limit it to 100ns.
1130 */
1131 if (acb->msg[4] && acb->msg[4] < 100 / 4) {
1132 #ifdef DEBUG
1133 printf ("%d: target %d wanted %dns period\n",
1134 device_xname(sc->sc_dev), target,
1135 acb->msg[4] * 4);
1136 #endif
1137 if (acb->msg[4] == 50 / 4)
1138 acb->msg[4] = 208 / 4;
1139 else
1140 acb->msg[4] = 100 / 4;
1141 }
1142 #endif /* MAXTOR_KLUDGE */
1143 printf ("%s: target %d now synchronous, period=%dns, offset=%d\n",
1144 device_xname(sc->sc_dev), target,
1145 (acb->msg[4] == 12) ? 50 : acb->msg[4] * 4,
1146 acb->msg[5]);
1147 scsi_period_to_siopng (sc, target);
1148 }
1149 rp->siop_sxfer = sc->sc_sync[target].sxfer;
1150 rp->siop_scntl3 = sc->sc_sync[target].scntl3;
1151 amiga_membarrier();
1152 if (sc->sc_sync[target].state == NEG_WAITS) {
1153 sc->sc_sync[target].state = NEG_DONE;
1154 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack;
1155 amiga_membarrier();
1156 return(0);
1157 }
1158 rp->siop_dcntl |= SIOP_DCNTL_STD;
1159 amiga_membarrier();
1160 sc->sc_sync[target].state = NEG_DONE;
1161 return (0);
1162 }
1163 /* XXX - not SDTR message */
1164 }
1165 if (sist & SIOP_SIST_MA) { /* Phase mismatch */
1166 #ifdef DEBUG
1167 ++siopngphmm;
1168 if (acb == NULL)
1169 printf("%s: Phase mismatch with no active command?\n",
1170 device_xname(sc->sc_dev));
1171 #endif
1172 if (acb->iob_len) {
1173 int adjust;
1174 adjust = ((dfifo - (dbc & 0x7f)) & 0x7f);
1175 if (sstat0 & SIOP_SSTAT0_OLF) /* sstat0 SODL lsb */
1176 ++adjust;
1177 if (sstat0 & SIOP_SSTAT0_ORF) /* sstat0 SODR lsb */
1178 ++adjust;
1179 if (sstat2 & SIOP_SSTAT2_OLF1) /* sstat2 SODL msb */
1180 ++adjust;
1181 if (sstat2 & SIOP_SSTAT2_ORF1) /* sstat2 SODR msb */
1182 ++adjust;
1183 acb->iob_curlen =
1184 *((long *)__UNVOLATILE(&rp->siop_dcmd)) & 0xffffff;
1185 acb->iob_curlen += adjust;
1186 acb->iob_curbuf =
1187 *((long *)__UNVOLATILE(&rp->siop_dnad)) - adjust;
1188 #ifdef DEBUG
1189 if (siopng_debug & 0x100) {
1190 int i;
1191 printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\n",
1192 acb->iob_curbuf, acb->iob_curlen, dfifo,
1193 dbc, sstat1, adjust, rp->siop_sbcl, siopngstarts, acb);
1194 if (acb->ds.chain[1].datalen) {
1195 for (i = 0; acb->ds.chain[i].datalen; ++i)
1196 printf("chain[%d] addr %p len %lx\n",
1197 i, acb->ds.chain[i].databuf,
1198 acb->ds.chain[i].datalen);
1199 }
1200 }
1201 #endif
1202 dma_cachectl ((void *)acb, sizeof(*acb));
1203 }
1204 #ifdef DEBUG
1205 SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp);
1206 if (siopng_debug & 9)
1207 printf ("Phase mismatch: %x dsp +%lx dcmd %lx\n",
1208 rp->siop_sbcl,
1209 rp->siop_dsp - sc->sc_scriptspa,
1210 *((volatile long *)&rp->siop_dcmd));
1211 #endif
1212 if ((rp->siop_sbcl & SIOP_REQ) == 0) {
1213 printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n",
1214 rp->siop_sbcl, rp->siop_dsp);
1215 #if defined(DEBUG) && defined(DDB)
1216 Debugger();
1217 #endif
1218 }
1219 switch (rp->siop_sbcl & 7) {
1220 case 0: /* data out */
1221 case 1: /* data in */
1222 case 2: /* status */
1223 case 3: /* command */
1224 case 6: /* message in */
1225 case 7: /* message out */
1226 rp->siop_dsp = sc->sc_scriptspa + Ent_switch;
1227 amiga_membarrier();
1228 break;
1229 default:
1230 goto bad_phase;
1231 }
1232 return 0;
1233 }
1234 if (sist & SIOP_SIST_STO) { /* Select timed out */
1235 #ifdef DEBUG
1236 if (acb == NULL)
1237 printf("%s: Select timeout with no active command?\n",
1238 device_xname(sc->sc_dev));
1239 if (rp->siop_sbcl & SIOP_BSY) {
1240 printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\n",
1241 rp, &siopng_scripts, &acb->ds);
1242 printf(" sbcl %x sdid %x istat %x dstat %x sist %x\n",
1243 rp->siop_sbcl, rp->siop_sdid, istat, dstat, sist);
1244 if (!(rp->siop_sbcl & SIOP_BSY)) {
1245 printf ("Yikes, it's not busy now!\n");
1246 #if 0
1247 *status = -1;
1248 if (sc->nexus_list.tqh_first) {
1249 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect;
1250 amiga_membarrier();
1251 }
1252 return 1;
1253 #endif
1254 }
1255 /* rp->siop_dcntl |= SIOP_DCNTL_STD;*/
1256 return (0);
1257 }
1258 #endif
1259 *status = -1;
1260 acb->xs->error = XS_SELTIMEOUT;
1261 if (sc->nexus_list.tqh_first) {
1262 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect;
1263 amiga_membarrier();
1264 }
1265 return 1;
1266 }
1267 if (acb)
1268 target = acb->xs->xs_periph->periph_target;
1269 else
1270 target = 7;
1271 if (sist & SIOP_SIST_UDC) {
1272 #ifdef DEBUG
1273 if (acb == NULL)
1274 printf("%s: Unexpected disconnect with no active command?\n",
1275 device_xname(sc->sc_dev));
1276 printf ("%s: target %d disconnected unexpectedly\n",
1277 device_xname(sc->sc_dev), target);
1278 siopng_dump_registers(sc);
1279 siopng_dump(sc);
1280 #endif
1281 #if 0
1282 siopngabort (sc, rp, "siopngchkintr");
1283 #endif
1284 *status = STS_BUSY;
1285 if (sc->nexus_list.tqh_first) {
1286 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect;
1287 amiga_membarrier();
1288 }
1289 return (acb != NULL);
1290 }
1291 if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 ||
1292 rp->siop_dsps == 0xff02)) {
1293 #ifdef DEBUG
1294 if (siopng_debug & 0x100)
1295 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",
1296 device_xname(sc->sc_dev), 1 << target, rp->siop_temp,
1297 rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0,
1298 acb->iob_curbuf, acb->iob_curlen,
1299 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopngstarts, acb);
1300 #endif
1301 if (acb == NULL) {
1302 printf("%s: Disconnect with no active command?\n",
1303 device_xname(sc->sc_dev));
1304 return (0);
1305 }
1306 /*
1307 * XXXX need to update iob_curbuf/iob_curlen to reflect
1308 * current data transferred. If device disconnected in
1309 * the middle of a DMA block, they should already be set
1310 * by the phase change interrupt. If the disconnect
1311 * occurs on a DMA block boundary, we have to figure out
1312 * which DMA block it was.
1313 */
1314 if (acb->iob_len && rp->siop_temp) {
1315 int n = rp->siop_temp - sc->sc_scriptspa;
1316
1317 if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen)
1318 printf("%s: iob_curbuf/len already set? n %x iob %lx/%lx chain[0] %p/%lx\n",
1319 device_xname(sc->sc_dev), n, acb->iob_curbuf, acb->iob_curlen,
1320 acb->ds.chain[0].databuf, acb->ds.chain[0].datalen);
1321 if (n < Ent_datain)
1322 n = (n - Ent_dataout) / 16;
1323 else
1324 n = (n - Ent_datain) / 16;
1325 if (n <= 0 && n > DMAMAXIO)
1326 printf("TEMP invalid %d\n", n);
1327 else {
1328 acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf;
1329 acb->iob_curlen = acb->ds.chain[n].datalen;
1330 }
1331 #ifdef DEBUG
1332 if (siopng_debug & 0x100) {
1333 printf("%s: TEMP offset %d", device_xname(sc->sc_dev), n);
1334 printf(" curbuf %lx curlen %lx\n", acb->iob_curbuf,
1335 acb->iob_curlen);
1336 }
1337 #endif
1338 }
1339 /*
1340 * If data transfer was interrupted by disconnect, iob_curbuf
1341 * and iob_curlen should reflect the point of interruption.
1342 * Adjust the DMA chain so that the data transfer begins
1343 * at the appropriate place upon reselection.
1344 * XXX This should only be done on save data pointer message?
1345 */
1346 if (acb->iob_curlen) {
1347 int i, j;
1348
1349 #ifdef DEBUG
1350 if (siopng_debug & 0x100)
1351 printf ("%s: adjusting DMA chain\n",
1352 device_xname(sc->sc_dev));
1353 if (rp->siop_dsps == 0xff02)
1354 printf ("%s: ID %02x disconnected without Save Data Pointers\n",
1355 device_xname(sc->sc_dev), 1 << target);
1356 #endif
1357 for (i = 0; i < DMAMAXIO; ++i) {
1358 if (acb->ds.chain[i].datalen == 0)
1359 break;
1360 if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf &&
1361 acb->iob_curbuf < (long)(acb->ds.chain[i].databuf +
1362 acb->ds.chain[i].datalen))
1363 break;
1364 }
1365 if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) {
1366 printf("couldn't find saved data pointer: ");
1367 printf("curbuf %lx curlen %lx i %d\n",
1368 acb->iob_curbuf, acb->iob_curlen, i);
1369 #ifdef DDB
1370 Debugger();
1371 #endif
1372 }
1373 #ifdef DEBUG
1374 if (siopng_debug & 0x100)
1375 printf(" chain[0]: %p/%lx -> %lx/%lx\n",
1376 acb->ds.chain[0].databuf,
1377 acb->ds.chain[0].datalen,
1378 acb->iob_curbuf,
1379 acb->iob_curlen);
1380 #endif
1381 acb->ds.chain[0].databuf = (char *)acb->iob_curbuf;
1382 acb->ds.chain[0].datalen = acb->iob_curlen;
1383 for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) {
1384 #ifdef DEBUG
1385 if (siopng_debug & 0x100)
1386 printf(" chain[%d]: %p/%lx -> %p/%lx\n", j,
1387 acb->ds.chain[j].databuf,
1388 acb->ds.chain[j].datalen,
1389 acb->ds.chain[i].databuf,
1390 acb->ds.chain[i].datalen);
1391 #endif
1392 acb->ds.chain[j].databuf = acb->ds.chain[i].databuf;
1393 acb->ds.chain[j].datalen = acb->ds.chain[i].datalen;
1394 }
1395 if (j < DMAMAXIO)
1396 acb->ds.chain[j].datalen = 0;
1397 DCIAS(kvtop((void *)&acb->ds.chain));
1398 }
1399 ++sc->sc_tinfo[target].dconns;
1400 /*
1401 * add nexus to waiting list
1402 * clear nexus
1403 * try to start another command for another target/lun
1404 */
1405 acb->status = sc->sc_flags & SIOP_INTSOFF;
1406 TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain);
1407 sc->sc_nexus = NULL; /* no current device */
1408 /* start script to wait for reselect */
1409 if (sc->sc_nexus == NULL) {
1410 rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect;
1411 amiga_membarrier();
1412 }
1413 /* XXXX start another command ? */
1414 if (sc->ready_list.tqh_first)
1415 siopng_sched(sc);
1416 #if 0
1417 else
1418 rp->siop_dcntl |= SIOP_DCNTL_STD;
1419 #endif
1420 return (0);
1421 }
1422 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) {
1423 int reselid = rp->siop_scratcha & 0x7f;
1424 int reselun = rp->siop_sfbr & 0x07;
1425
1426 sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */
1427 #ifdef DEBUG
1428 if (siopng_debug & 0x100)
1429 printf ("%s: target ID %02x reselected dsps %lx\n",
1430 device_xname(sc->sc_dev), reselid,
1431 rp->siop_dsps);
1432 if ((rp->siop_sfbr & 0x80) == 0)
1433 printf("%s: Reselect message in was not identify: %x\n",
1434 device_xname(sc->sc_dev), rp->siop_sfbr);
1435 #endif
1436 if (sc->sc_nexus) {
1437 #ifdef DEBUG
1438 if (siopng_debug & 0x100)
1439 printf ("%s: reselect ID %02x w/active\n",
1440 device_xname(sc->sc_dev), reselid);
1441 #endif
1442 TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain);
1443 sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy
1444 &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_lun);
1445 --sc->sc_active;
1446 }
1447 /*
1448 * locate acb of reselecting device
1449 * set sc->sc_nexus to acb
1450 */
1451 for (acb = sc->nexus_list.tqh_first; acb;
1452 acb = acb->chain.tqe_next) {
1453 if (reselid != ((acb->ds.scsi_addr >> 16) & 0xff) ||
1454 reselun != (acb->msgout[0] & 0x07))
1455 continue;
1456 TAILQ_REMOVE(&sc->nexus_list, acb, chain);
1457 sc->sc_nexus = acb;
1458 sc->sc_flags |= acb->status;
1459 acb->status = 0;
1460 DCIAS(kvtop(&acb->stat[0]));
1461 rp->siop_dsa = kvtop((void *)&acb->ds);
1462 amiga_membarrier();
1463 rp->siop_sxfer =
1464 sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer;
1465 #ifndef FIXME
1466 rp->siop_scntl3 =
1467 sc->sc_sync[acb->xs->xs_periph->periph_target].scntl3;
1468 amiga_membarrier();
1469 #endif
1470 break;
1471 }
1472 if (acb == NULL) {
1473 printf("%s: target ID %02x reselect nexus_list %p\n",
1474 device_xname(sc->sc_dev), reselid,
1475 sc->nexus_list.tqh_first);
1476 panic("unable to find reselecting device");
1477 }
1478 dma_cachectl ((void *)acb, sizeof(*acb));
1479 rp->siop_temp = 0;
1480 rp->siop_dcntl |= SIOP_DCNTL_STD;
1481 amiga_membarrier();
1482 return (0);
1483 }
1484 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) {
1485 #ifdef DEBUG
1486 u_short ctest2 = rp->siop_ctest2;
1487
1488 /* reselect was interrupted (by Sig_P or select) */
1489 if (siopng_debug & 0x100 ||
1490 (ctest2 & SIOP_CTEST2_SIGP) == 0)
1491 printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n",
1492 device_xname(sc->sc_dev), rp->siop_scntl1,
1493 ctest2, rp->siop_sfbr, istat, rp->siop_istat);
1494 #endif
1495 /* XXX assumes it was not select */
1496 if (sc->sc_nexus == NULL) {
1497 #ifdef DEBUG
1498 printf("%s: reselect interrupted, sc_nexus == NULL\n",
1499 device_xname(sc->sc_dev));
1500 #if 0
1501 siopng_dump(sc);
1502 #ifdef DDB
1503 Debugger();
1504 #endif
1505 #endif
1506 #endif
1507 rp->siop_dcntl |= SIOP_DCNTL_STD;
1508 return(0);
1509 }
1510 target = sc->sc_nexus->xs->xs_periph->periph_target;
1511 rp->siop_temp = 0;
1512 rp->siop_dsa = kvtop((void *)&sc->sc_nexus->ds);
1513 amiga_membarrier();
1514 rp->siop_sxfer = sc->sc_sync[target].sxfer;
1515 #ifndef FIXME
1516 rp->siop_scntl3 = sc->sc_sync[target].scntl3;
1517 amiga_membarrier();
1518 #endif
1519 rp->siop_dsp = sc->sc_scriptspa;
1520 amiga_membarrier();
1521 return (0);
1522 }
1523 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) {
1524 if (acb == NULL)
1525 printf("%s: Bad message-in with no active command?\n",
1526 device_xname(sc->sc_dev));
1527 /* Unrecognized message in byte */
1528 dma_cachectl (&acb->msg[1],1);
1529 printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n",
1530 device_xname(sc->sc_dev), rp->siop_sfbr, acb->msg[1], rp->siop_sbcl);
1531 /* what should be done here? */
1532 DCIAS(kvtop(&acb->msg[1]));
1533 rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack;
1534 amiga_membarrier();
1535 return (0);
1536 }
1537 if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) {
1538 /* Status phase wasn't followed by message in phase? */
1539 printf ("%s: Status phase not followed by message in phase? sbcl %x sbdl %x\n",
1540 device_xname(sc->sc_dev), rp->siop_sbcl, rp->siop_sbdl);
1541 if (rp->siop_sbcl == 0xa7) {
1542 /* It is now, just continue the script? */
1543 rp->siop_dcntl |= SIOP_DCNTL_STD;
1544 return (0);
1545 }
1546 }
1547 if (sist == 0 && dstat & SIOP_DSTAT_SIR) {
1548 dma_cachectl (&acb->stat[0], 1);
1549 dma_cachectl (&acb->msg[0], 1);
1550 printf ("SIOP interrupt: %lx sts %x msg %x %x sbcl %x\n",
1551 rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1],
1552 rp->siop_sbcl);
1553 siopngreset (sc);
1554 *status = -1;
1555 return 0; /* siopngreset has cleaned up */
1556 }
1557 if (sist & SIOP_SIST_SGE)
1558 printf ("SIOP: SCSI Gross Error\n");
1559 if (sist & SIOP_SIST_PAR)
1560 printf ("SIOP: Parity Error\n");
1561 if (dstat & SIOP_DSTAT_IID)
1562 printf ("SIOP: Invalid instruction detected\n");
1563 bad_phase:
1564 /*
1565 * temporary panic for unhandled conditions
1566 * displays various things about the 53C720/770 status and registers
1567 * then panics.
1568 * XXXX need to clean this up to print out the info, reset, and continue
1569 */
1570 printf ("siopngchkintr: target %x ds %p\n", target, &acb->ds);
1571 printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n",
1572 sc->sc_scriptspa, (unsigned)kvtop((void *)&acb->ds),
1573 (unsigned)kvtop((void *)__UNVOLATILE(rp)), rp->siop_dsp,
1574 *((long *)__UNVOLATILE(&rp->siop_dcmd)));
1575 printf ("siopngchkintr: istat %x dstat %x sist %x dsps %lx dsa %lx sbcl %x sts %x msg %x %x sfbr %x\n",
1576 istat, dstat, sist, rp->siop_dsps, rp->siop_dsa,
1577 rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr);
1578 #ifdef DEBUG
1579 if (siopng_debug & 0x20)
1580 panic("siopngchkintr: **** temp ****");
1581 #endif
1582 #ifdef DDB
1583 Debugger ();
1584 #endif
1585 siopngreset (sc); /* hard reset */
1586 *status = -1;
1587 return 0; /* siopngreset cleaned up */
1588 }
1589
1590 void
siopng_select(struct siop_softc * sc)1591 siopng_select(struct siop_softc *sc)
1592 {
1593 siop_regmap_p rp;
1594 struct siop_acb *acb = sc->sc_nexus;
1595
1596 #ifdef DEBUG
1597 if (siopng_debug & 1)
1598 printf ("%s: select ", device_xname(sc->sc_dev));
1599 #endif
1600
1601 rp = sc->sc_siopp;
1602 if (acb->xs->xs_control & XS_CTL_POLL || siopng_no_dma) {
1603 sc->sc_flags |= SIOP_INTSOFF;
1604 sc->sc_flags &= ~SIOP_INTDEFER;
1605 if ((rp->siop_istat & 0x08) == 0) {
1606 rp->siop_sien = 0;
1607 rp->siop_dien = 0;
1608 }
1609 #if 0
1610 } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) {
1611 sc->sc_flags &= ~SIOP_INTSOFF;
1612 if ((rp->siop_istat & 0x08) == 0) {
1613 rp->siop_sien = sc->sc_sien;
1614 rp->siop_dien = sc->sc_dien;
1615 }
1616 #endif
1617 }
1618 #ifdef DEBUG
1619 if (siopng_debug & 1)
1620 printf ("siopng_select: target %x cmd %02x ds %p\n",
1621 acb->xs->xs_periph->periph_target, acb->cmd.opcode,
1622 &sc->sc_nexus->ds);
1623 #endif
1624
1625 siopng_start(sc, acb->xs->xs_periph->periph_target,
1626 acb->xs->xs_periph->periph_lun,
1627 (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft);
1628
1629 return;
1630 }
1631
1632 /*
1633 * 53C720/770 interrupt handler
1634 */
1635
1636 void
siopngintr(register struct siop_softc * sc)1637 siopngintr(register struct siop_softc *sc)
1638 {
1639 siop_regmap_p rp;
1640 u_char istat, dstat;
1641 u_short sist;
1642 int status;
1643 int s = splbio();
1644
1645 istat = sc->sc_istat;
1646 if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) {
1647 splx(s);
1648 return;
1649 }
1650
1651 /* Got a valid interrupt on this device */
1652 rp = sc->sc_siopp;
1653 dstat = sc->sc_dstat;
1654 sist = sc->sc_sist;
1655 if (dstat & SIOP_DSTAT_SIR)
1656 sc->sc_intcode = rp->siop_dsps;
1657 sc->sc_istat = 0;
1658 #ifdef DEBUG
1659 if (siopng_debug & 1)
1660 printf ("%s: intr istat %x dstat %x sist %x\n",
1661 device_xname(sc->sc_dev), istat, dstat, sist);
1662 if (!sc->sc_active) {
1663 printf ("%s: spurious interrupt? istat %x dstat %x sist %x nexus %p status %x\n",
1664 device_xname(sc->sc_dev), istat, dstat, sist,
1665 sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 0);
1666 }
1667 #endif
1668
1669 #ifdef DEBUG
1670 if (siopng_debug & 5) {
1671 DCIAS(kvtop(&sc->sc_nexus->stat[0]));
1672 printf ("%s: intr istat %x dstat %x sist %x dsps %lx sbcl %x sts %x msg %x\n",
1673 device_xname(sc->sc_dev), istat, dstat, sist,
1674 rp->siop_dsps, rp->siop_sbcl,
1675 sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]);
1676 }
1677 #endif
1678 if (sc->sc_flags & SIOP_INTDEFER) {
1679 sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF);
1680 rp->siop_sien = sc->sc_sien;
1681 rp->siop_dien = sc->sc_dien;
1682 }
1683 if (siopng_checkintr (sc, istat, dstat, sist, &status)) {
1684 #if 1
1685 if (status == 0xff)
1686 printf ("siopngintr: status == 0xff\n");
1687 #endif
1688 if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) {
1689 #if 0
1690 if (rp->siop_sbcl & SIOP_BSY) {
1691 printf ("%s: SCSI bus busy at completion",
1692 device_xname(sc->sc_dev));
1693 printf(" targ %d sbcl %02x sfbr %x respid %02x dsp +%x\n",
1694 sc->sc_nexus->xs->xs_periph->periph_target,
1695 rp->siop_sbcl, rp->siop_sfbr, rp->siop_respid,
1696 rp->siop_dsp - sc->sc_scriptspa);
1697 }
1698 #endif
1699 siopng_scsidone(sc->sc_nexus, sc->sc_nexus ?
1700 sc->sc_nexus->stat[0] : -1);
1701 }
1702 }
1703 splx(s);
1704 }
1705
1706 /*
1707 * This is based on the Progressive Peripherals 33 MHz Zeus driver and will
1708 * not be correct for other 53c710 boards.
1709 *
1710 */
1711 void
scsi_period_to_siopng(struct siop_softc * sc,int target)1712 scsi_period_to_siopng(struct siop_softc *sc, int target)
1713 {
1714 int period, offset, sxfer, scntl3 = 0;
1715
1716 period = sc->sc_nexus->msg[4];
1717 offset = sc->sc_nexus->msg[5];
1718 #ifdef FIXME
1719 for (scntl3 = 1; scntl3 < 4; ++scntl3) {
1720 sxfer = (period * 4 - 1) / sc->sc_tcp[scntl3] - 3;
1721 if (sxfer >= 0 && sxfer <= 7)
1722 break;
1723 }
1724 if (scntl3 > 3) {
1725 printf("siopng sync: unable to compute sync params for period %dns\n",
1726 period * 4);
1727 /*
1728 * XXX need to pick a value we can do and renegotiate
1729 */
1730 sxfer = scntl3 = 0;
1731 } else {
1732 sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ?
1733 offset : SIOP_MAX_OFFSET);
1734 #ifdef DEBUG_SYNC
1735 printf("siopng sync: params for period %dns: sxfer %x scntl3 %x",
1736 period * 4, sxfer, scntl3);
1737 printf(" actual period %dns\n",
1738 sc->sc_tcp[scntl3] * ((sxfer >> 4) + 4));
1739 #endif /* DEBUG_SYNC */
1740 }
1741 #else /* FIXME */
1742 sxfer = offset <= SIOP_MAX_OFFSET ? offset : SIOP_MAX_OFFSET;
1743 sxfer |= 0x20; /* XXX XFERP: 5 */
1744 #ifndef FIXME
1745 if (period <= (50 / 4)) /* XXX */
1746 scntl3 = 0x95; /* Ultra, SCF: /1, CCF: /4 */
1747 else if (period <= (100 / 4))
1748 scntl3 = 0x35; /* SCF: /2, CCF: /4 */
1749 else if (period <= (200 / 4))
1750 scntl3 = 0x55; /* SCF: /4, CCF: /4 */
1751 else
1752 scntl3 = 0xff; /* XXX ??? */
1753 #else
1754 scntl3 = 5;
1755 #endif
1756 #endif
1757 sc->sc_sync[target].sxfer = sxfer;
1758 sc->sc_sync[target].scntl3 = scntl3 |
1759 (sc->sc_sync[target].scntl3 & SIOP_SCNTL3_EWS);
1760 #ifdef DEBUG_SYNC
1761 printf ("siopng sync: siop_sxfr %02x, siop_scntl3 %02x\n", sxfer, scntl3);
1762 #endif
1763 }
1764
1765 void
siopng_dump_registers(struct siop_softc * sc)1766 siopng_dump_registers(struct siop_softc *sc)
1767 {
1768 siop_regmap_p rp = sc->sc_siopp;
1769
1770 printf(" scntl0 %02x scntl1 %02x scntl2 %02x scntl3 %02x\n",
1771 rp->siop_scntl0, rp->siop_scntl1, rp->siop_scntl2, rp->siop_scntl3);
1772 printf(" scid %02x sxfer %02x sdid %02x gpreg %02x\n",
1773 rp->siop_scid, rp->siop_sxfer, rp->siop_sdid, rp->siop_gpreg);
1774 printf(" sfbr %02x socl %02x ssid %02x sbcl %02x\n",
1775 rp->siop_sfbr, rp->siop_socl, rp->siop_ssid, rp->siop_sbcl);
1776 printf(" dstat %02x sstat0 %02x sstat1 %02x sstat2 %02x\n",
1777 rp->siop_dstat, rp->siop_sstat0, rp->siop_sstat1, rp->siop_sstat2);
1778 printf(" ctest0 %02x ctest1 %02x ctest2 %02x ctest3 %02x\n",
1779 rp->siop_ctest0, rp->siop_ctest1, rp->siop_ctest2, rp->siop_ctest3);
1780 printf(" dfifo %02x ctest4 %02x ctest5 %02x ctest6 %02x\n",
1781 0, rp->siop_ctest4, rp->siop_ctest5, rp->siop_ctest6);
1782 printf(" dcmd %02x dbc2 %02x dbc1 %02x dbc0 %02x\n",
1783 rp->siop_dcmd, rp->siop_dbc2, rp->siop_dbc1, rp->siop_dbc0);
1784 printf(" dmode %02x dien %02x dwt %02x dcntl %02x\n",
1785 rp->siop_dmode, rp->siop_dien, rp->siop_dwt, rp->siop_dcntl);
1786 printf(" stest0 %02x stest1 %02x stest2 %02x stest3 %02x\n",
1787 rp->siop_stest0, rp->siop_stest1, rp->siop_stest2, rp->siop_stest3);
1788 printf(" istat %02x sien %04x sist %04x respid %04x\n",
1789 rp->siop_istat, rp->siop_sien, rp->siop_sist, rp->siop_respid);
1790 printf(" sidl %04x sodl %04x sbdl %04x\n",
1791 rp->siop_sidl, rp->siop_sodl, rp->siop_sbdl);
1792 printf(" dsps %08lx dsp %08lx (+%lx)\n",
1793 rp->siop_dsps, rp->siop_dsp, rp->siop_dsp > sc->sc_scriptspa ?
1794 rp->siop_dsp - sc->sc_scriptspa : 0);
1795 printf(" dsa %08lx temp %08lx dnad %08lx\n",
1796 rp->siop_dsa, rp->siop_temp, rp->siop_dnad);
1797 printf(" scratcha %08lx scratchb %08lx adder %08lx\n",
1798 rp->siop_scratcha, rp->siop_scratchb, rp->siop_adder);
1799 }
1800
1801 #ifdef DEBUG
1802
1803 #if SIOP_TRACE_SIZE
1804 void
siopng_dump_trace(void)1805 siopng_dump_trace(void)
1806 {
1807 int i;
1808
1809 printf("siopng trace: next index %d\n", siopng_trix);
1810 i = siopng_trix;
1811 do {
1812 printf("%3d: '%c' %02x %02x %02x\n", i, siopng_trbuf[i],
1813 siopng_trbuf[i + 1], siopng_trbuf[i + 2], siopng_trbuf[i + 3]);
1814 i = (i + 4) & (SIOP_TRACE_SIZE - 1);
1815 } while (i != siopng_trix);
1816 }
1817 #endif
1818
1819 void
siopng_dump_acb(struct siop_acb * acb)1820 siopng_dump_acb(struct siop_acb *acb)
1821 {
1822 u_char *b = (u_char *) &acb->cmd;
1823 int i;
1824
1825 printf("acb@%p ", acb);
1826 if (acb->xs == NULL) {
1827 printf("<unused>\n");
1828 return;
1829 }
1830 printf("(%d:%d) flags %2x clen %2d cmd ",
1831 acb->xs->xs_periph->periph_target,
1832 acb->xs->xs_periph->periph_lun, acb->flags, acb->clen);
1833 for (i = acb->clen; i; --i)
1834 printf(" %02x", *b++);
1835 printf("\n");
1836 printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data,
1837 acb->xs->datalen);
1838 printf("va %p:%lx ", acb->iob_buf, acb->iob_len);
1839 printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen);
1840 }
1841
1842 void
siopng_dump(struct siop_softc * sc)1843 siopng_dump(struct siop_softc *sc)
1844 {
1845 struct siop_acb *acb;
1846 siop_regmap_p rp = sc->sc_siopp;
1847 int s;
1848 int i;
1849
1850 s = splbio();
1851 #if SIOP_TRACE_SIZE
1852 siopng_dump_trace();
1853 #endif
1854 printf("%s@%p regs %p istat %x\n",
1855 device_xname(sc->sc_dev), sc, rp, rp->siop_istat);
1856 if ((acb = sc->free_list.tqh_first) > 0) {
1857 printf("Free list:\n");
1858 while (acb) {
1859 siopng_dump_acb(acb);
1860 acb = acb->chain.tqe_next;
1861 }
1862 }
1863 if ((acb = sc->ready_list.tqh_first) > 0) {
1864 printf("Ready list:\n");
1865 while (acb) {
1866 siopng_dump_acb(acb);
1867 acb = acb->chain.tqe_next;
1868 }
1869 }
1870 if ((acb = sc->nexus_list.tqh_first) > 0) {
1871 printf("Nexus list:\n");
1872 while (acb) {
1873 siopng_dump_acb(acb);
1874 acb = acb->chain.tqe_next;
1875 }
1876 }
1877 if (sc->sc_nexus) {
1878 printf("Nexus:\n");
1879 siopng_dump_acb(sc->sc_nexus);
1880 }
1881 for (i = 0; i < 8; ++i) {
1882 if (sc->sc_tinfo[i].cmds > 2) {
1883 printf("tgt %d: cmds %d disc %d lubusy %x\n",
1884 i, sc->sc_tinfo[i].cmds,
1885 sc->sc_tinfo[i].dconns,
1886 sc->sc_tinfo[i].lubusy);
1887 }
1888 }
1889 splx(s);
1890 }
1891 #endif
1892