xref: /netbsd-src/sys/arch/sparc/stand/common/promdev.c (revision d48f14661dda8638fee055ba15d35bdfb29b9fa8)
1 /*	$NetBSD: promdev.c,v 1.19 2006/06/20 05:41:59 jdc Exp $ */
2 
3 /*
4  * Copyright (c) 1993 Paul Kranenburg
5  * Copyright (c) 1995 Gordon W. Ross
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. All advertising materials mentioning features or use of this software
17  *    must display the following acknowledgement:
18  *      This product includes software developed by Paul Kranenburg.
19  * 4. The name of the author may not be used to endorse or promote products
20  *    derived from this software without specific prior written permission
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 /*
35  * Note: the `#ifndef BOOTXX' in here serve to queeze the code size
36  * of the 1st-stage boot program.
37  */
38 #include <sys/param.h>
39 #include <sys/reboot.h>
40 #include <sys/systm.h>
41 #include <machine/oldmon.h>
42 #include <machine/promlib.h>
43 #include <machine/ctlreg.h>
44 #include <sparc/sparc/asm.h>
45 #include <machine/pte.h>
46 
47 #include <lib/libsa/stand.h>
48 #include <lib/libkern/libkern.h>
49 #include <sparc/stand/common/promdev.h>
50 
51 #ifndef BOOTXX
52 #include <sys/disklabel.h>
53 #include <dev/sun/disklabel.h>
54 #include <dev/raidframe/raidframevar.h>
55 #endif
56 
57 /* OBP V0-3 PROM vector */
58 #define obpvec	((struct promvec *)romp)
59 
60 int	obp_close __P((struct open_file *));
61 int	obp_strategy __P((void *, int, daddr_t, size_t, void *, size_t *));
62 int	obp_v0_strategy __P((void *, int, daddr_t, size_t, void *, size_t *));
63 ssize_t	obp_v0_xmit __P((struct promdata *, void *, size_t));
64 ssize_t	obp_v0_recv __P((struct promdata *, void *, size_t));
65 int	obp_v2_strategy __P((void *, int, daddr_t, size_t, void *, size_t *));
66 ssize_t	obp_v2_xmit __P((struct promdata *, void *, size_t));
67 ssize_t	obp_v2_recv __P((struct promdata *, void *, size_t));
68 int	oldmon_close __P((struct open_file *));
69 int	oldmon_strategy __P((void *, int, daddr_t, size_t, void *, size_t *));
70 void	oldmon_iclose __P((struct saioreq *));
71 int	oldmon_iopen __P((struct promdata *));
72 ssize_t	oldmon_xmit __P((struct promdata *, void *, size_t));
73 ssize_t	oldmon_recv __P((struct promdata *, void *, size_t));
74 
75 static char	*oldmon_mapin __P((u_long, int, int));
76 #ifndef BOOTXX
77 static char	*mygetpropstring __P((int, char *));
78 static int	getdevtype __P((int, char *));
79 #endif
80 
81 extern struct fs_ops file_system_nfs[];
82 extern struct fs_ops file_system_ufs[];
83 
84 #define null_devopen	(void *)sparc_noop
85 #define null_devioctl	(void *)sparc_noop
86 
87 #if 0
88 struct devsw devsw[];
89 int	ndevs = (sizeof(devsw)/sizeof(devsw[0]));
90 #endif
91 
92 struct devsw oldmon_devsw =
93 	{ "oldmon", oldmon_strategy, null_devopen, oldmon_close, null_devioctl };
94 struct devsw obp_v0_devsw =
95 	{ "obp v0", obp_v0_strategy, null_devopen, obp_close, null_devioctl };
96 struct devsw obp_v2_devsw =
97 	{ "obp v2", obp_v2_strategy, null_devopen, obp_close, null_devioctl };
98 
99 
100 char	prom_bootdevice[MAX_PROM_PATH];
101 static int	saveecho;
102 
103 #ifndef BOOTXX
104 static daddr_t doffset = 0;
105 #endif
106 
107 
108 void
109 putchar(c)
110 	int c;
111 {
112 
113 	if (c == '\n')
114 		prom_putchar('\r');
115 	prom_putchar(c);
116 }
117 
118 void
119 _rtt()
120 {
121 	prom_halt();
122 }
123 
124 int
125 devopen(f, fname, file)
126 	struct open_file *f;
127 	const char *fname;
128 	char **file;
129 {
130 	int	error = 0, fd = 0;
131 	struct	promdata *pd;
132 #ifndef BOOTXX
133 	char *partition;
134 	int part = 0;
135 	char rawpart[MAX_PROM_PATH];
136 	struct promdata *disk_pd;
137 	char buf[DEV_BSIZE];
138 	struct disklabel *dlp;
139 	size_t read;
140 #endif
141 
142 	pd = (struct promdata *)alloc(sizeof *pd);
143 	f->f_devdata = (void *)pd;
144 
145 	switch (prom_version()) {
146 	case PROM_OLDMON:
147 		error = oldmon_iopen(pd);
148 #ifndef BOOTXX
149 		pd->xmit = oldmon_xmit;
150 		pd->recv = oldmon_recv;
151 #endif
152 		f->f_dev = &oldmon_devsw;
153 		saveecho = *romVectorPtr->echo;
154 		*romVectorPtr->echo = 0;
155 		break;
156 
157 	case PROM_OBP_V0:
158 	case PROM_OBP_V2:
159 	case PROM_OBP_V3:
160 	case PROM_OPENFIRM:
161 		if (*prom_bootdevice == '\0') {
162 			error = ENXIO;
163 			break;
164 		}
165 		fd = prom_open(prom_bootdevice);
166 		if (fd == 0) {
167 			error = ENXIO;
168 			break;
169 		}
170 		pd->fd = fd;
171 		switch (prom_version()) {
172 		case PROM_OBP_V0:
173 #ifndef BOOTXX
174 			pd->xmit = obp_v0_xmit;
175 			pd->recv = obp_v0_recv;
176 #endif
177 			f->f_dev = &obp_v0_devsw;
178 			break;
179 		case PROM_OBP_V2:
180 		case PROM_OBP_V3:
181 		case PROM_OPENFIRM:
182 #ifndef BOOTXX
183 			pd->xmit = obp_v2_xmit;
184 			pd->recv = obp_v2_recv;
185 #endif
186 			f->f_dev = &obp_v2_devsw;
187 		}
188 	}
189 
190 	if (error) {
191 		printf("Can't open device `%s'\n", prom_bootdevice);
192 		return (error);
193 	}
194 
195 #ifdef BOOTXX
196 	pd->devtype = DT_BLOCK;
197 #else /* BOOTXX */
198 	pd->devtype = getdevtype(fd, prom_bootdevice);
199 	/* Assume type BYTE is a raw device */
200 	if (pd->devtype != DT_BYTE)
201 		*file = (char *)fname;
202 
203 	if (pd->devtype == DT_NET) {
204 		bcopy(file_system_nfs, file_system, sizeof(struct fs_ops));
205 		if ((error = net_open(pd)) != 0) {
206 			printf("Can't open NFS network connection on `%s'\n",
207 				prom_bootdevice);
208 			return (error);
209 		}
210 	} else {
211 		bcopy(file_system_ufs, file_system, sizeof(struct fs_ops));
212 
213 #ifdef NOTDEF_DEBUG
214 	printf("devopen: Checking disklabel for RAID partition\n");
215 #endif
216 
217 		/*
218 		 * We need to read from the raw partition (i.e. the
219 		 * beginning of the disk in order to check the NetBSD
220 		 * disklabel to see if the boot partition is type RAID.
221 		 *
222 		 * For machines with prom_version() == PROM_OLDMON, we
223 		 * only handle boot from RAID for the first disk partition.
224 		 */
225 		disk_pd = (struct promdata *)alloc(sizeof *disk_pd);
226 		memcpy(disk_pd, pd, sizeof(struct promdata));
227 		if (prom_version() != PROM_OLDMON) {
228 			strcpy(rawpart, prom_bootdevice);
229 			if ((partition = strchr(rawpart, ':')) != '\0' &&
230 		    	    *++partition >= 'a' &&
231 			    *partition <= 'a' +  MAXPARTITIONS) {
232 				part = *partition - 'a';
233 				*partition = RAW_PART + 'a';
234 			} else
235 				strcat(rawpart, ":c");
236 			if ((disk_pd->fd = prom_open(rawpart)) == 0)
237 				return 0;
238 		}
239 		error = f->f_dev->dv_strategy(disk_pd, F_READ, LABELSECTOR,
240 		    DEV_BSIZE, &buf, &read);
241 		if (prom_version() != PROM_OLDMON)
242 			prom_close(disk_pd->fd);
243 		if (error || (read != DEV_BSIZE))
244 			return 0;
245 #ifdef NOTDEF_DEBUG
246 		{
247 			int x = 0;
248 			char *p = (char *) buf;
249 
250 			printf("  Sector %d:\n", LABELSECTOR);
251 			printf("00000000  ");
252 			while (x < DEV_BSIZE) {
253 				if (*p >= 0x00 && *p < 0x10)
254 					printf("0%x ", *p & 0xff);
255 				else
256 					printf("%x ", *p & 0xff);
257 				x++;
258 				if (x && !(x % 8))
259 					printf(" ");
260 				if (x && !(x % 16)) {
261 					if(x < 0x100)
262 						printf("\n000000%x  ", x);
263 					else
264 						printf("\n00000%x  ", x);
265 				}
266 				p++;
267 			}
268 			printf("\n");
269 		}
270 #endif
271 		/* Check for NetBSD disk label. */
272 		dlp = (struct disklabel *) (buf + LABELOFFSET);
273 		if (dlp->d_magic == DISKMAGIC && !dkcksum(dlp) &&
274 		    dlp->d_partitions[part].p_fstype == FS_RAID) {
275 #ifdef NOTDEF_DEBUG
276 			printf("devopen: found RAID partition, "
277 			    "adjusting offset to %d\n", RF_PROTECTED_SECTORS);
278 #endif
279 			doffset = RF_PROTECTED_SECTORS;
280 		}
281 	}
282 #endif /* BOOTXX */
283 	return (0);
284 }
285 
286 
287 int
288 obp_v0_strategy(devdata, flag, dblk, size, buf, rsize)
289 	void	*devdata;
290 	int	flag;
291 	daddr_t	dblk;
292 	size_t	size;
293 	void	*buf;
294 	size_t	*rsize;
295 {
296 	int	n, error = 0;
297 	struct	promdata *pd = (struct promdata *)devdata;
298 	int	fd = pd->fd;
299 
300 #ifndef BOOTXX
301 	dblk += doffset;
302 #endif
303 #ifdef DEBUG_PROM
304 	printf("promstrategy: size=%d dblk=%d\n", size, dblk);
305 #endif
306 
307 #define prom_bread(fd, nblk, dblk, buf) \
308 		(*obpvec->pv_v0devops.v0_rbdev)(fd, nblk, dblk, buf)
309 #define prom_bwrite(fd, nblk, dblk, buf) \
310 		(*obpvec->pv_v0devops.v0_wbdev)(fd, nblk, dblk, buf)
311 
312 #ifndef BOOTXX	/* We know it's a block device, so save some space */
313 	if (pd->devtype != DT_BLOCK) {
314 		printf("promstrategy: non-block device not supported\n");
315 		error = EINVAL;
316 	}
317 #endif
318 
319 	n = (flag == F_READ)
320 		? prom_bread(fd, btodb(size), dblk, buf)
321 		: prom_bwrite(fd, btodb(size), dblk, buf);
322 
323 	*rsize = dbtob(n);
324 
325 #ifdef DEBUG_PROM
326 	printf("rsize = %x\n", *rsize);
327 #endif
328 	return (error);
329 }
330 
331 int
332 obp_v2_strategy(devdata, flag, dblk, size, buf, rsize)
333 	void	*devdata;
334 	int	flag;
335 	daddr_t	dblk;
336 	size_t	size;
337 	void	*buf;
338 	size_t	*rsize;
339 {
340 	int	error = 0;
341 	struct	promdata *pd = (struct promdata *)devdata;
342 	int	fd = pd->fd;
343 
344 #ifndef BOOTXX
345 	dblk += doffset;
346 #endif
347 #ifdef DEBUG_PROM
348 	printf("promstrategy: size=%d dblk=%d\n", size, dblk);
349 #endif
350 
351 #ifndef BOOTXX	/* We know it's a block device, so save some space */
352 	if (pd->devtype == DT_BLOCK)
353 #endif
354 		prom_seek(fd, dbtob(dblk));
355 
356 	*rsize = (flag == F_READ)
357 		? prom_read(fd, buf, size)
358 		: prom_write(fd, buf, size);
359 
360 #ifdef DEBUG_PROM
361 	printf("rsize = %x\n", *rsize);
362 #endif
363 	return (error);
364 }
365 
366 /*
367  * On old-monitor machines, things work differently.
368  */
369 int
370 oldmon_strategy(devdata, flag, dblk, size, buf, rsize)
371 	void	*devdata;
372 	int	flag;
373 	daddr_t	dblk;
374 	size_t	size;
375 	void	*buf;
376 	size_t	*rsize;
377 {
378 	struct promdata	*pd = devdata;
379 	struct saioreq	*si;
380 	struct om_boottable *ops;
381 	char	*dmabuf;
382 	int	si_flag;
383 	size_t	xcnt;
384 
385 	si = pd->si;
386 	ops = si->si_boottab;
387 
388 #ifndef BOOTXX
389 	dblk += doffset;
390 #endif
391 #ifdef DEBUG_PROM
392 	printf("prom_strategy: size=%d dblk=%d\n", size, dblk);
393 #endif
394 
395 	dmabuf = dvma_mapin(buf, size);
396 
397 	si->si_bn = dblk;
398 	si->si_ma = dmabuf;
399 	si->si_cc = size;
400 
401 	si_flag = (flag == F_READ) ? SAIO_F_READ : SAIO_F_WRITE;
402 	xcnt = (*ops->b_strategy)(si, si_flag);
403 	dvma_mapout(dmabuf, size);
404 
405 #ifdef DEBUG_PROM
406 	printf("disk_strategy: xcnt = %x\n", xcnt);
407 #endif
408 
409 	if (xcnt <= 0)
410 		return (EIO);
411 
412 	*rsize = xcnt;
413 	return (0);
414 }
415 
416 int
417 obp_close(f)
418 	struct open_file *f;
419 {
420 	struct promdata *pd = f->f_devdata;
421 	register int fd = pd->fd;
422 
423 #ifndef BOOTXX
424 	if (pd->devtype == DT_NET)
425 		net_close(pd);
426 #endif
427 	prom_close(fd);
428 	return 0;
429 }
430 
431 int
432 oldmon_close(f)
433 	struct open_file *f;
434 {
435 	struct promdata *pd = f->f_devdata;
436 
437 #ifndef BOOTXX
438 	if (pd->devtype == DT_NET)
439 		net_close(pd);
440 #endif
441 	oldmon_iclose(pd->si);
442 	pd->si = NULL;
443 	*romVectorPtr->echo = saveecho; /* Hmm, probably must go somewhere else */
444 	return 0;
445 }
446 
447 #ifndef BOOTXX
448 ssize_t
449 obp_v0_xmit(pd, buf, len)
450 	struct	promdata *pd;
451 	void	*buf;
452 	size_t	len;
453 {
454 
455 	return ((*obpvec->pv_v0devops.v0_wnet)(pd->fd, len, buf));
456 }
457 
458 ssize_t
459 obp_v2_xmit(pd, buf, len)
460 	struct	promdata *pd;
461 	void	*buf;
462 	size_t	len;
463 {
464 
465 	return (prom_write(pd->fd, buf, len));
466 }
467 
468 ssize_t
469 obp_v0_recv(pd, buf, len)
470 	struct	promdata *pd;
471 	void	*buf;
472 	size_t	len;
473 {
474 
475 	return ((*obpvec->pv_v0devops.v0_rnet)(pd->fd, len, buf));
476 }
477 
478 ssize_t
479 obp_v2_recv(pd, buf, len)
480 	struct	promdata *pd;
481 	void	*buf;
482 	size_t	len;
483 {
484 	int	n;
485 
486 	n = prom_read(pd->fd, buf, len);
487 
488 	/* OBP V2 & V3 may return -2 */
489 	return (n == -2 ? 0 : n);
490 }
491 
492 ssize_t
493 oldmon_xmit(pd, buf, len)
494 	struct	promdata *pd;
495 	void	*buf;
496 	size_t	len;
497 {
498 	struct saioreq	*si;
499 	struct saif	*sif;
500 	char		*dmabuf;
501 	int		rv;
502 
503 	si = pd->si;
504 	sif = si->si_sif;
505 	if (sif == NULL) {
506 		printf("xmit: not a network device\n");
507 		return (-1);
508 	}
509 	dmabuf = dvma_mapin(buf, len);
510 	rv = sif->sif_xmit(si->si_devdata, dmabuf, len);
511 	dvma_mapout(dmabuf, len);
512 
513 	return (ssize_t)(rv ? -1 : len);
514 }
515 
516 ssize_t
517 oldmon_recv(pd, buf, len)
518 	struct	promdata *pd;
519 	void	*buf;
520 	size_t	len;
521 {
522 	struct saioreq	*si;
523 	struct saif	*sif;
524 	char		*dmabuf;
525 	int		rv;
526 
527 	si = pd->si;
528 	sif = si->si_sif;
529 	dmabuf = dvma_mapin(buf, len);
530 	rv = sif->sif_poll(si->si_devdata, dmabuf);
531 	dvma_mapout(dmabuf, len);
532 
533 	return (ssize_t)rv;
534 }
535 
536 int
537 getchar()
538 {
539 	return (prom_getchar());
540 }
541 
542 time_t
543 getsecs()
544 {
545 	(void)prom_peekchar();
546 	return (prom_ticks() / 1000);
547 }
548 
549 /*
550  * A number of well-known devices on sun4s.
551  */
552 static struct dtab {
553 	char	*name;
554 	int	type;
555 } dtab[] = {
556 	{ "sd",	DT_BLOCK },
557 	{ "st",	DT_BLOCK },
558 	{ "xd",	DT_BLOCK },
559 	{ "xy",	DT_BLOCK },
560 	{ "fd",	DT_BLOCK },
561 	{ "le",	DT_NET },
562 	{ "ie",	DT_NET },
563 	{ NULL, 0 }
564 };
565 
566 int
567 getdevtype(fd, name)
568 	int	fd;
569 	char	*name;
570 {
571 	struct dtab *dp;
572 	int node;
573 	char *cp;
574 
575 	switch (prom_version()) {
576 	case PROM_OLDMON:
577 	case PROM_OBP_V0:
578 		for (dp = dtab; dp->name; dp++) {
579 			if (name[0] == dp->name[0] &&
580 			    name[1] == dp->name[1])
581 				return (dp->type);
582 		}
583 		break;
584 
585 	case PROM_OBP_V2:
586 	case PROM_OBP_V3:
587 	case PROM_OPENFIRM:
588 		node = prom_instance_to_package(fd);
589 		cp = mygetpropstring(node, "device_type");
590 		if (strcmp(cp, "block") == 0)
591 			return (DT_BLOCK);
592 		else if (strcmp(cp, "network") == 0)
593 			return (DT_NET);
594 		else if (strcmp(cp, "byte") == 0)
595 			return (DT_BYTE);
596 		break;
597 	}
598 	return (0);
599 }
600 
601 /*
602  * Return a string property.  There is a (small) limit on the length;
603  * the string is fetched into a static buffer which is overwritten on
604  * subsequent calls.
605  */
606 char *
607 mygetpropstring(node, name)
608 	int node;
609 	char *name;
610 {
611 	int len;
612 static	char buf[64];
613 
614 	len = prom_proplen(node, name);
615 	if (len > 0)
616 		_prom_getprop(node, name, buf, len);
617 	else
618 		len = 0;
619 
620 	buf[len] = '\0';	/* usually unnecessary */
621 	return (buf);
622 }
623 #endif /* BOOTXX */
624 
625 /*
626  * Old monitor routines
627  */
628 
629 struct saioreq prom_si;
630 static int promdev_inuse;
631 
632 int
633 oldmon_iopen(pd)
634 	struct promdata	*pd;
635 {
636 	struct om_bootparam *bp;
637 	struct om_boottable *ops;
638 	struct devinfo *dip;
639 	struct saioreq *si;
640 	int	error;
641 
642 	if (promdev_inuse)
643 		return (EMFILE);
644 
645 	bp = *romVectorPtr->bootParam;
646 	ops = bp->bootTable;
647 	dip = ops->b_devinfo;
648 
649 #ifdef DEBUG_PROM
650 	printf("Boot device type: %s\n", ops->b_desc);
651 	printf("d_devbytes=%d\n", dip->d_devbytes);
652 	printf("d_dmabytes=%d\n", dip->d_dmabytes);
653 	printf("d_localbytes=%d\n", dip->d_localbytes);
654 	printf("d_stdcount=%d\n", dip->d_stdcount);
655 	printf("d_stdaddrs[%d]=%x\n", bp->ctlrNum, dip->d_stdaddrs[bp->ctlrNum]);
656 	printf("d_devtype=%d\n", dip->d_devtype);
657 	printf("d_maxiobytes=%d\n", dip->d_maxiobytes);
658 #endif
659 
660 	dvma_init();
661 
662 	si = &prom_si;
663 	memset(si, 0, sizeof(*si));
664 	si->si_boottab = ops;
665 	si->si_ctlr = bp->ctlrNum;
666 	si->si_unit = bp->unitNum;
667 	si->si_boff = bp->partNum;
668 
669 	if (si->si_ctlr > dip->d_stdcount)
670 		return (ECTLR);
671 
672 	if (dip->d_devbytes) {
673 		si->si_devaddr = oldmon_mapin(dip->d_stdaddrs[si->si_ctlr],
674 			dip->d_devbytes, dip->d_devtype);
675 #ifdef	DEBUG_PROM
676 		printf("prom_iopen: devaddr=0x%x pte=0x%x\n",
677 			si->si_devaddr,
678 			getpte4((u_long)si->si_devaddr & ~PGOFSET));
679 #endif
680 	}
681 
682 	if (dip->d_dmabytes) {
683 		si->si_dmaaddr = dvma_alloc(dip->d_dmabytes);
684 #ifdef	DEBUG_PROM
685 		printf("prom_iopen: dmaaddr=0x%x\n", si->si_dmaaddr);
686 #endif
687 	}
688 
689 	if (dip->d_localbytes) {
690 		si->si_devdata = alloc(dip->d_localbytes);
691 #ifdef	DEBUG_PROM
692 		printf("prom_iopen: devdata=0x%x\n", si->si_devdata);
693 #endif
694 	}
695 
696 	/* OK, call the PROM device open routine. */
697 	error = (*ops->b_open)(si);
698 	if (error != 0) {
699 		printf("prom_iopen: \"%s\" error=%d\n", ops->b_desc, error);
700 		return (ENXIO);
701 	}
702 #ifdef	DEBUG_PROM
703 	printf("prom_iopen: succeeded, error=%d\n", error);
704 #endif
705 
706 	pd->si = si;
707 	promdev_inuse++;
708 	return (0);
709 }
710 
711 void
712 oldmon_iclose(si)
713 	struct saioreq *si;
714 {
715 	struct om_boottable *ops;
716 	struct devinfo *dip;
717 
718 	if (promdev_inuse == 0)
719 		return;
720 
721 	ops = si->si_boottab;
722 	dip = ops->b_devinfo;
723 
724 	(*ops->b_close)(si);
725 
726 	if (si->si_dmaaddr) {
727 		dvma_free(si->si_dmaaddr, dip->d_dmabytes);
728 		si->si_dmaaddr = NULL;
729 	}
730 
731 	promdev_inuse = 0;
732 }
733 
734 static struct mapinfo {
735 	int maptype;
736 	int pgtype;
737 	int base;
738 } oldmon_mapinfo[] = {
739 #define PG_COMMON	(PG_V|PG_W|PG_S|PG_NC)
740 	{ MAP_MAINMEM,   PG_OBMEM | PG_COMMON, 0 },
741 	{ MAP_OBIO,      PG_OBIO  | PG_COMMON, 0 },
742 	{ MAP_MBMEM,     PG_VME16 | PG_COMMON, 0xFF000000 },
743 	{ MAP_MBIO,      PG_VME16 | PG_COMMON, 0xFFFF0000 },
744 	{ MAP_VME16A16D, PG_VME16 | PG_COMMON, 0xFFFF0000 },
745 	{ MAP_VME16A32D, PG_VME32 | PG_COMMON, 0xFFFF0000 },
746 	{ MAP_VME24A16D, PG_VME16 | PG_COMMON, 0xFF000000 },
747 	{ MAP_VME24A32D, PG_VME32 | PG_COMMON, 0xFF000000 },
748 	{ MAP_VME32A16D, PG_VME16 | PG_COMMON, 0 },
749 	{ MAP_VME32A32D, PG_VME32 | PG_COMMON, 0 },
750 };
751 static int oldmon_mapinfo_cnt =
752 	sizeof(oldmon_mapinfo) / sizeof(oldmon_mapinfo[0]);
753 
754 /* The virtual address we will use for PROM device mappings. */
755 static u_long prom_devmap = MONSHORTSEG;
756 
757 static char *
758 oldmon_mapin(physaddr, length, maptype)
759 	u_long physaddr;
760 	int length, maptype;
761 {
762 	int i, pa, pte, va;
763 
764 	if (length > (4*NBPG))
765 		panic("oldmon_mapin: length=%d", length);
766 
767 	for (i = 0; i < oldmon_mapinfo_cnt; i++)
768 		if (oldmon_mapinfo[i].maptype == maptype)
769 			goto found;
770 	panic("oldmon_mapin: invalid maptype %d", maptype);
771 
772 found:
773 	pte = oldmon_mapinfo[i].pgtype;
774 	pa = oldmon_mapinfo[i].base;
775 	pa += physaddr;
776 	pte |= ((pa >> SUN4_PGSHIFT) & PG_PFNUM);
777 
778 	va = prom_devmap;
779 	do {
780 		setpte4(va, pte);
781 		va += NBPG;
782 		pte += 1;
783 		length -= NBPG;
784 	} while (length > 0);
785 	return ((char*)(prom_devmap | (pa & PGOFSET)));
786 }
787