Annotation of sys/arch/sparc/dev/obio.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: obio.c,v 1.18 2007/07/01 19:07:45 miod Exp $ */
2: /* $NetBSD: obio.c,v 1.37 1997/07/29 09:58:11 fair Exp $ */
3:
4: /*
5: * Copyright (c) 1993, 1994 Theo de Raadt
6: * Copyright (c) 1995, 1997 Paul Kranenburg
7: * All rights reserved.
8: *
9: * Redistribution and use in source and binary forms, with or without
10: * modification, are permitted provided that the following conditions
11: * are met:
12: * 1. Redistributions of source code must retain the above copyright
13: * notice, this list of conditions and the following disclaimer.
14: * 2. Redistributions in binary form must reproduce the above copyright
15: * notice, this list of conditions and the following disclaimer in the
16: * documentation and/or other materials provided with the distribution.
17: * 3. The name of the author may not be used to endorse or promote products
18: * derived from this software without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30: */
31:
32: #include <sys/param.h>
33: #include <sys/systm.h>
34: #include <sys/device.h>
35: #include <sys/malloc.h>
36:
37: #ifdef DEBUG
38: #include <sys/proc.h>
39: #include <sys/syslog.h>
40: #endif
41:
42: #include <uvm/uvm_extern.h>
43:
44: #include <machine/autoconf.h>
45: #include <machine/pmap.h>
46: #include <machine/oldmon.h>
47: #include <machine/cpu.h>
48: #include <machine/ctlreg.h>
49: #include <sparc/sparc/asm.h>
50: #include <sparc/sparc/vaddrs.h>
51: #include <sparc/sparc/cpuvar.h>
52: #include <sparc/dev/sbusvar.h>
53: #include <sparc/dev/vmereg.h>
54:
55: struct vmebus_softc {
56: struct device sc_dev; /* base device */
57: struct vmebusreg *sc_reg; /* VME control registers */
58: struct vmebusvec *sc_vec; /* VME interrupt vector */
59: struct rom_range *sc_range; /* ROM range property */
60: int sc_nrange;
61: };
62: struct vmebus_softc *vmebus_sc;/*XXX*/
63:
64: struct bus_softc {
65: union {
66: struct device scu_dev; /* base device */
67: struct sbus_softc scu_sbus; /* obio is another sbus slot */
68: struct vmebus_softc scu_vme;
69: } bu;
70: };
71:
72:
73: /* autoconfiguration driver */
74: static int busmatch(struct device *, void *, void *);
75: static void obioattach(struct device *, struct device *, void *);
76: static void vmesattach(struct device *, struct device *, void *);
77: static void vmelattach(struct device *, struct device *, void *);
78: static void vmeattach(struct device *, struct device *, void *);
79:
80: int busprint(void *, const char *);
81: int vmeprint(void *, const char *);
82: static int busattach(struct device *, void *, void *, int);
83: int obio_scan(struct device *, void *, void *);
84: int vmes_scan(struct device *, void *, void *);
85: int vmel_scan(struct device *, void *, void *);
86: void vmebus_translate(struct device *, struct confargs *, int);
87: int vmeintr(void *);
88:
89: struct cfattach obio_ca = {
90: sizeof(struct bus_softc), busmatch, obioattach
91: };
92:
93: struct cfdriver obio_cd = {
94: NULL, "obio", DV_DULL
95: };
96:
97: struct cfattach vmel_ca = {
98: sizeof(struct bus_softc), busmatch, vmelattach
99: };
100:
101: struct cfdriver vmel_cd = {
102: NULL, "vmel", DV_DULL
103: };
104:
105: struct cfattach vmes_ca = {
106: sizeof(struct bus_softc), busmatch, vmesattach
107: };
108:
109: struct cfdriver vmes_cd = {
110: NULL, "vmes", DV_DULL
111: };
112:
113: struct cfattach vme_ca = {
114: sizeof(struct bus_softc), busmatch, vmeattach
115: };
116:
117: struct cfdriver vme_cd = {
118: NULL, "vme", DV_DULL
119: };
120:
121: struct intrhand **vmeints;
122:
123:
124: int
125: busmatch(parent, vcf, aux)
126: struct device *parent;
127: void *vcf, *aux;
128: {
129: register struct cfdata *cf = vcf;
130: register struct confargs *ca = aux;
131: register struct romaux *ra = &ca->ca_ra;
132:
133: if (CPU_ISSUN4M)
134: return (strcmp(cf->cf_driver->cd_name, ra->ra_name) == 0);
135:
136: if (!CPU_ISSUN4)
137: return (0);
138:
139: return (strcmp(cf->cf_driver->cd_name, ra->ra_name) == 0);
140: }
141:
142: int
143: busprint(args, obio)
144: void *args;
145: const char *obio;
146: {
147: register struct confargs *ca = args;
148:
149: if (ca->ca_ra.ra_name == NULL)
150: ca->ca_ra.ra_name = "<unknown>";
151:
152: if (obio)
153: printf("%s at %s", ca->ca_ra.ra_name, obio);
154:
155: printf(" addr %p", ca->ca_ra.ra_paddr);
156:
157: if (CPU_ISSUN4 && ca->ca_ra.ra_intr[0].int_vec != -1)
158: printf(" vec 0x%x", ca->ca_ra.ra_intr[0].int_vec);
159:
160: return (UNCONF);
161: }
162:
163: int
164: vmeprint(args, name)
165: void *args;
166: const char *name;
167: {
168: register struct confargs *ca = args;
169:
170: if (name)
171: printf("%s at %s", ca->ca_ra.ra_name, name);
172: return (UNCONF);
173: }
174:
175: void
176: obioattach(parent, self, args)
177: struct device *parent, *self;
178: void *args;
179: {
180: #if defined(SUN4M)
181: register struct bus_softc *sc = (struct bus_softc *)self;
182: struct confargs oca, *ca = args;
183: register struct romaux *ra = &ca->ca_ra;
184: register int node0, node;
185: register char *name;
186: register const char *sp;
187: const char *const *ssp;
188: int rlen;
189: extern int autoconf_nzs;
190:
191: static const char *const special4m[] = {
192: /* find these first */
193: "eeprom",
194: "counter",
195: #if 0 /* Not all sun4m's have an `auxio' */
196: "auxio",
197: #endif
198: "",
199: /* place device to ignore here */
200: "interrupt",
201: NULL
202: };
203: #endif
204:
205: if (CPU_ISSUN4) {
206: if (self->dv_unit > 0) {
207: printf(" unsupported\n");
208: return;
209: }
210: printf("\n");
211:
212: (void)config_search(obio_scan, self, args);
213: bus_untmp();
214: }
215:
216: #if defined(SUN4M)
217: if (!CPU_ISSUN4M)
218: return;
219:
220: /*
221: * There is only one obio bus (it is in fact one of the SBus slots)
222: * How about VME?
223: */
224: if (self->dv_unit > 0) {
225: printf(" unsupported\n");
226: return;
227: }
228:
229: printf("\n");
230:
231: if (ra->ra_bp != NULL && strcmp(ra->ra_bp->name, "obio") == 0)
232: oca.ca_ra.ra_bp = ra->ra_bp + 1;
233: else
234: oca.ca_ra.ra_bp = NULL;
235:
236: node = ra->ra_node;
237: rlen = getproplen(node, "ranges");
238: if (rlen > 0) {
239: sc->bu.scu_sbus.sc_nrange = rlen / sizeof(struct rom_range);
240: sc->bu.scu_sbus.sc_range =
241: (struct rom_range *)malloc(rlen, M_DEVBUF, M_NOWAIT);
242: if (sc->bu.scu_sbus.sc_range == 0)
243: panic("obio: PROM ranges too large: %d", rlen);
244: (void)getprop(node, "ranges", sc->bu.scu_sbus.sc_range, rlen);
245: }
246:
247: /*
248: * Loop through ROM children, fixing any relative addresses
249: * and then configuring each device.
250: * We first do the crucial ones, such as eeprom, etc.
251: */
252: node0 = firstchild(ra->ra_node);
253: for (ssp = special4m ; *(sp = *ssp) != 0; ssp++) {
254: if ((node = findnode(node0, sp)) == 0) {
255: printf("could not find %s amongst obio devices\n", sp);
256: panic(sp);
257: }
258: if (!romprop(&oca.ca_ra, sp, node))
259: continue;
260:
261: sbus_translate(self, &oca);
262: oca.ca_bustype = BUS_OBIO;
263: (void) config_found(self, (void *)&oca, busprint);
264: }
265:
266: for (node = node0; node; node = nextsibling(node)) {
267: name = getpropstring(node, "name");
268: for (ssp = special4m ; (sp = *ssp) != NULL; ssp++)
269: if (strcmp(name, sp) == 0)
270: break;
271:
272: if (sp != NULL || !romprop(&oca.ca_ra, name, node))
273: continue;
274:
275: if (strcmp(name, "zs") == 0)
276: /* XXX - see autoconf.c for this hack */
277: autoconf_nzs++;
278:
279: /* Translate into parent address spaces */
280: sbus_translate(self, &oca);
281: oca.ca_bustype = BUS_OBIO;
282: (void) config_found(self, (void *)&oca, busprint);
283: }
284: #endif
285: }
286:
287: void
288: vmesattach(parent, self, args)
289: struct device *parent, *self;
290: void *args;
291: {
292: if (self->dv_unit > 0 ||
293: (CPU_ISSUN4M && strncmp(parent->dv_xname, "vme", 3) != 0)) {
294: printf(" unsupported\n");
295: return;
296: }
297: printf("\n");
298:
299: if (vmeints == NULL) {
300: vmeints = (struct intrhand **)malloc(256 *
301: sizeof(struct intrhand *), M_TEMP, M_NOWAIT);
302: if (vmeints == NULL)
303: panic("vmesattach: can't allocate intrhand");
304: bzero(vmeints, 256 * sizeof(struct intrhand *));
305: }
306: (void)config_search(vmes_scan, self, args);
307: bus_untmp();
308: }
309:
310: void
311: vmelattach(parent, self, args)
312: struct device *parent, *self;
313: void *args;
314: {
315: if (self->dv_unit > 0 ||
316: (CPU_ISSUN4M && strncmp(parent->dv_xname, "vme", 3) != 0)) {
317: printf(" unsupported\n");
318: return;
319: }
320: printf("\n");
321:
322: if (vmeints == NULL) {
323: vmeints = (struct intrhand **)malloc(256 *
324: sizeof(struct intrhand *), M_TEMP, M_NOWAIT);
325: if (vmeints == NULL)
326: panic("vmelattach: can't allocate intrhand");
327: bzero(vmeints, 256 * sizeof(struct intrhand *));
328: }
329: (void)config_search(vmel_scan, self, args);
330: bus_untmp();
331: }
332:
333: void
334: vmeattach(parent, self, aux)
335: struct device *parent, *self;
336: void *aux;
337: {
338: struct vmebus_softc *sc = (struct vmebus_softc *)self;
339: struct confargs *ca = aux;
340: register struct romaux *ra = &ca->ca_ra;
341: int node, rlen;
342: struct confargs oca;
343:
344: if (!CPU_ISSUN4M || self->dv_unit > 0) {
345: printf(" unsupported\n");
346: return;
347: }
348:
349: node = ra->ra_node;
350:
351: sc->sc_reg = (struct vmebusreg *)
352: mapiodev(&ra->ra_reg[0], 0, ra->ra_reg[0].rr_len);
353: sc->sc_vec = (struct vmebusvec *)
354: mapiodev(&ra->ra_reg[1], 0, ra->ra_reg[1].rr_len);
355:
356: /*
357: * Get "range" property, though we don't do anything with it yet.
358: */
359: rlen = getproplen(node, "ranges");
360: if (rlen > 0) {
361: sc->sc_nrange = rlen / sizeof(struct rom_range);
362: sc->sc_range =
363: (struct rom_range *)malloc(rlen, M_DEVBUF, M_NOWAIT);
364: if (sc->sc_range == 0)
365: panic("vme: PROM ranges too large: %d", rlen);
366: (void)getprop(node, "ranges", sc->sc_range, rlen);
367: }
368:
369: vmebus_sc = sc;
370: printf(": version 0x%x\n",
371: sc->sc_reg->vmebus_cr & VMEBUS_CR_IMPL);
372:
373: if (ra->ra_bp != NULL && strcmp(ra->ra_bp->name, "vme") == 0)
374: oca.ca_ra.ra_bp = ra->ra_bp + 1;
375: else
376: oca.ca_ra.ra_bp = NULL;
377:
378: oca.ca_ra.ra_name = "vmes";
379: oca.ca_bustype = BUS_MAIN;
380: (void)config_found(self, (void *)&oca, vmeprint);
381:
382: oca.ca_ra.ra_name = "vmel";
383: oca.ca_bustype = BUS_MAIN;
384: (void)config_found(self, (void *)&oca, vmeprint);
385: }
386:
387: void
388: vmebus_translate(dev, ca, bustype)
389: struct device *dev;
390: struct confargs *ca;
391: int bustype;
392: {
393: struct vmebus_softc *sc = (struct vmebus_softc *)dev;
394: register int j;
395: int cspace;
396:
397: if (sc->sc_nrange == 0)
398: panic("vmebus: no ranges");
399:
400: /*
401: * Find VMEbus modifier based on address space.
402: * XXX - should not be encoded in `ra_paddr'
403: */
404: if (((u_long)ca->ca_ra.ra_paddr & 0xffff0000) == 0xffff0000)
405: cspace = VMEMOD_A16_D_S;
406: else if (((u_long)ca->ca_ra.ra_paddr & 0xff000000) == 0xff000000)
407: cspace = VMEMOD_A24_D_S;
408: else
409: cspace = VMEMOD_A32_D_S;
410:
411: cspace |= (bustype == BUS_VME32) ? VMEMOD_D32 : 0;
412:
413: /* Translate into parent address spaces */
414: for (j = 0; j < sc->sc_nrange; j++) {
415: if (sc->sc_range[j].cspace == cspace) {
416: #if notyet
417: (int)ca->ca_ra.ra_paddr +=
418: sc->sc_range[j].poffset;
419: #endif
420: (int)ca->ca_ra.ra_iospace =
421: sc->sc_range[j].pspace;
422: break;
423: }
424: }
425: }
426:
427: int bt2pmt[] = {
428: PMAP_OBIO,
429: PMAP_OBIO,
430: PMAP_VME16,
431: PMAP_VME32,
432: PMAP_OBIO
433: };
434:
435: int
436: busattach(parent, vcf, args, bustype)
437: struct device *parent;
438: void *vcf, *args;
439: int bustype;
440: {
441: #if defined(SUN4) || defined(SUN4M)
442: register struct cfdata *cf = vcf;
443: register struct confargs *ca = args;
444: struct confargs oca;
445: caddr_t tmp;
446:
447: if (bustype == BUS_OBIO && CPU_ISSUN4) {
448:
449: /*
450: * avoid sun4m entries which don't have valid PA's.
451: * no point in even probing them.
452: */
453: if (cf->cf_loc[0] == -1) return 0;
454:
455: /*
456: * On the 4/100 obio addresses must be mapped at
457: * 0x0YYYYYYY, but alias higher up (we avoid the
458: * alias condition because it causes pmap difficulties)
459: * XXX: We also assume that 4/[23]00 obio addresses
460: * must be 0xZYYYYYYY, where (Z != 0)
461: */
462: if (cpuinfo.cpu_type == CPUTYP_4_100 &&
463: (cf->cf_loc[0] & 0xf0000000))
464: return 0;
465: if (cpuinfo.cpu_type != CPUTYP_4_100 &&
466: !(cf->cf_loc[0] & 0xf0000000))
467: return 0;
468: }
469:
470: oca.ca_ra.ra_paddr = (void *)cf->cf_loc[0];
471: oca.ca_ra.ra_len = 0;
472: oca.ca_ra.ra_nreg = 1;
473: if (CPU_ISSUN4M)
474: vmebus_translate(parent->dv_parent, &oca, bustype);
475: else
476: oca.ca_ra.ra_iospace = bt2pmt[bustype];
477:
478: if (oca.ca_ra.ra_paddr)
479: tmp = (caddr_t)mapdev(oca.ca_ra.ra_reg, TMPMAP_VA, 0, NBPG);
480: else
481: tmp = NULL;
482: oca.ca_ra.ra_vaddr = tmp;
483: oca.ca_ra.ra_intr[0].int_pri = cf->cf_loc[1];
484: if (bustype == BUS_VME16 || bustype == BUS_VME32)
485: oca.ca_ra.ra_intr[0].int_vec = cf->cf_loc[2];
486: else
487: oca.ca_ra.ra_intr[0].int_vec = -1;
488: oca.ca_ra.ra_nintr = 1;
489: oca.ca_ra.ra_name = cf->cf_driver->cd_name;
490: if (ca->ca_ra.ra_bp != NULL &&
491: ((bustype == BUS_VME16 && strcmp(ca->ca_ra.ra_bp->name,"vmes") ==0) ||
492: (bustype == BUS_VME32 && strcmp(ca->ca_ra.ra_bp->name,"vmel") ==0) ||
493: (bustype == BUS_OBIO && strcmp(ca->ca_ra.ra_bp->name,"obio") == 0)))
494: oca.ca_ra.ra_bp = ca->ca_ra.ra_bp + 1;
495: else
496: oca.ca_ra.ra_bp = NULL;
497: oca.ca_bustype = bustype;
498:
499: if ((*cf->cf_attach->ca_match)(parent, cf, &oca) == 0)
500: return 0;
501:
502: /*
503: * check if XXmatch routine replaced the temporary mapping with
504: * a real mapping. If not, then make sure we don't pass the
505: * tmp mapping to the attach routine.
506: */
507: if (oca.ca_ra.ra_vaddr == tmp)
508: oca.ca_ra.ra_vaddr = NULL; /* wipe out tmp address */
509: /*
510: * the match routine will set "ra_len" if it wants us to
511: * establish a mapping for it.
512: * (which won't be seen on future XXmatch calls,
513: * so not as useful as it seems.)
514: */
515: if (oca.ca_ra.ra_len)
516: oca.ca_ra.ra_vaddr =
517: bus_map(oca.ca_ra.ra_reg, oca.ca_ra.ra_len);
518:
519: config_attach(parent, cf, &oca, busprint);
520: return 1;
521: #else
522: return 0;
523: #endif
524: }
525:
526: int
527: obio_scan(parent, child, args)
528: struct device *parent;
529: void *child, *args;
530: {
531: return busattach(parent, child, args, BUS_OBIO);
532: }
533:
534: int
535: vmes_scan(parent, child, args)
536: struct device *parent;
537: void *child, *args;
538: {
539: return busattach(parent, child, args, BUS_VME16);
540: }
541:
542: int
543: vmel_scan(parent, child, args)
544: struct device *parent;
545: void *child, *args;
546: {
547: return busattach(parent, child, args, BUS_VME32);
548: }
549:
550: int pil_to_vme[] = {
551: -1, /* pil 0 */
552: -1, /* pil 1 */
553: 1, /* pil 2 */
554: 2, /* pil 3 */
555: -1, /* pil 4 */
556: 3, /* pil 5 */
557: -1, /* pil 6 */
558: 4, /* pil 7 */
559: -1, /* pil 8 */
560: 5, /* pil 9 */
561: -1, /* pil 10 */
562: 6, /* pil 11 */
563: -1, /* pil 12 */
564: 7, /* pil 13 */
565: -1, /* pil 14 */
566: -1, /* pil 15 */
567: };
568:
569: int
570: vmeintr(arg)
571: void *arg;
572: {
573: int pil = (int)arg, level, vec;
574: struct intrhand *ih;
575: int r, i = 0;
576:
577: level = (pil_to_vme[pil] << 1) | 1;
578:
579: if (CPU_ISSUN4) {
580: vec = ldcontrolb((caddr_t)(AC_VMEINTVEC | level));
581: } else if (CPU_ISSUN4M) {
582: vec = vmebus_sc->sc_vec->vmebusvec[level];
583: } else
584: panic("vme: spurious interrupt");
585:
586: if (vec == -1) {
587: printf("vme: spurious interrupt\n");
588: return 0;
589: }
590:
591: for (ih = vmeints[vec]; ih; ih = ih->ih_next)
592: if (ih->ih_fun) {
593: r = (ih->ih_fun)(ih->ih_arg);
594: if (r > 0) {
595: ih->ih_count.ec_count++;
596: return (r);
597: }
598: i |= r;
599: }
600: return (i);
601: }
602:
603: void
604: vmeintr_establish(vec, level, ih, ipl_block, name)
605: int vec, level;
606: struct intrhand *ih;
607: int ipl_block;
608: const char *name;
609: {
610: struct intrhand *ihs;
611:
612: if (vmeints == NULL)
613: panic("vmeintr_establish: interrupt vector not allocated");
614:
615: if (vec == -1)
616: panic("vmeintr_establish: uninitialized vec");
617:
618: if (vmeints[vec] == NULL)
619: vmeints[vec] = ih;
620: else {
621: for (ihs = vmeints[vec]; ihs->ih_next; ihs = ihs->ih_next)
622: ;
623: ihs->ih_next = ih;
624: }
625:
626: /* ensure the interrupt subsystem will call us at this level */
627: for (ihs = intrhand[level]; ihs; ihs = ihs->ih_next)
628: if (ihs->ih_fun == vmeintr)
629: return;
630:
631: ihs = (struct intrhand *)malloc(sizeof(struct intrhand),
632: M_TEMP, M_NOWAIT);
633: if (ihs == NULL)
634: panic("vme_addirq");
635: bzero(ihs, sizeof *ihs);
636: ihs->ih_fun = vmeintr;
637: ihs->ih_arg = (void *)level;
638: intr_establish(level, ihs, ipl_block, NULL);
639: }
640:
641: #define getpte(va) lda(va, ASI_PTE)
642:
643: /*
644: * If we can find a mapping that was established by the rom, use it.
645: * Else, create a new mapping.
646: */
647: void *
648: bus_map(pa, len)
649: struct rom_reg *pa;
650: int len;
651: {
652:
653: if (CPU_ISSUN4 && len <= NBPG) {
654: u_long pf = (u_long)(pa->rr_paddr) >> PGSHIFT;
655: int pgtype = PMAP_T2PTE_4(pa->rr_iospace);
656: u_long va, pte;
657:
658: for (va = OLDMON_STARTVADDR; va < OLDMON_ENDVADDR; va += NBPG) {
659: pte = getpte(va);
660: if ((pte & PG_V) != 0 && (pte & PG_TYPE) == pgtype &&
661: (pte & PG_PFNUM) == pf)
662: return ((void *)
663: (va | ((u_long)pa->rr_paddr & PGOFSET)) );
664: /* note: preserve page offset */
665: }
666: }
667:
668: return mapiodev(pa, 0, len);
669: }
670:
671: void
672: bus_untmp()
673: {
674: pmap_remove(pmap_kernel(), TMPMAP_VA, TMPMAP_VA+NBPG);
675: pmap_update(pmap_kernel());
676: }
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