xref: /titanic_51/usr/src/uts/i86pc/io/isa.c (revision 3d09a4fec6be19a6f09e277d5d5d17942bb4abf4)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 /*
27  *	ISA bus nexus driver
28  */
29 
30 #include <sys/types.h>
31 #include <sys/cmn_err.h>
32 #include <sys/conf.h>
33 #include <sys/modctl.h>
34 #include <sys/autoconf.h>
35 #include <sys/errno.h>
36 #include <sys/debug.h>
37 #include <sys/kmem.h>
38 #include <sys/psm.h>
39 #include <sys/ddidmareq.h>
40 #include <sys/ddi_impldefs.h>
41 #include <sys/dma_engine.h>
42 #include <sys/ddi.h>
43 #include <sys/sunddi.h>
44 #include <sys/sunndi.h>
45 #include <sys/acpi/acpi_enum.h>
46 #include <sys/mach_intr.h>
47 #include <sys/pci.h>
48 #include <sys/note.h>
49 #if defined(__xpv)
50 #include <sys/hypervisor.h>
51 #include <sys/evtchn_impl.h>
52 #endif
53 
54 extern int pseudo_isa;
55 extern int isa_resource_setup(void);
56 extern int (*psm_intr_ops)(dev_info_t *, ddi_intr_handle_impl_t *,
57     psm_intr_op_t, int *);
58 extern void pci_remove_isa_resources(int, uint32_t, uint32_t);
59 static char USED_RESOURCES[] = "used-resources";
60 static void isa_alloc_nodes(dev_info_t *);
61 static void enumerate_BIOS_serial(dev_info_t *);
62 static void isa_postattach(dev_info_t *);
63 
64 /*
65  * The following typedef is used to represent an entry in the "ranges"
66  * property of a pci-isa bridge device node.
67  */
68 typedef struct {
69 	uint32_t child_high;
70 	uint32_t child_low;
71 	uint32_t parent_high;
72 	uint32_t parent_mid;
73 	uint32_t parent_low;
74 	uint32_t size;
75 } pib_ranges_t;
76 
77 typedef struct {
78 	uint32_t base;
79 	uint32_t len;
80 } used_ranges_t;
81 
82 #define	USED_CELL_SIZE	2	/* 1 byte addr, 1 byte size */
83 #define	ISA_ADDR_IO	1	/* IO address space */
84 #define	ISA_ADDR_MEM	0	/* memory adress space */
85 #define	BIOS_DATA_AREA	0x400
86 /*
87  * #define ISA_DEBUG 1
88  */
89 
90 /*
91  *      Local data
92  */
93 static ddi_dma_lim_t ISA_dma_limits = {
94 	0,		/* address low				*/
95 	0x00ffffff,	/* address high				*/
96 	0,		/* counter max				*/
97 	1,		/* burstsize				*/
98 	DMA_UNIT_8,	/* minimum xfer				*/
99 	0,		/* dma speed				*/
100 	(uint_t)DMALIM_VER0, /* version				*/
101 	0x0000ffff,	/* address register			*/
102 	0x0000ffff,	/* counter register			*/
103 	1,		/* sector size				*/
104 	0x00000001,	/* scatter/gather list length		*/
105 	(uint_t)0xffffffff /* request size			*/
106 };
107 
108 static ddi_dma_attr_t ISA_dma_attr = {
109 	DMA_ATTR_V0,
110 	(unsigned long long)0,
111 	(unsigned long long)0x00ffffff,
112 	0x0000ffff,
113 	1,
114 	1,
115 	1,
116 	(unsigned long long)0xffffffff,
117 	(unsigned long long)0x0000ffff,
118 	1,
119 	1,
120 	0
121 };
122 
123 
124 /*
125  * Config information
126  */
127 
128 static int
129 isa_bus_map(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp,
130     off_t offset, off_t len, caddr_t *vaddrp);
131 
132 static int
133 isa_dma_allochdl(dev_info_t *, dev_info_t *, ddi_dma_attr_t *,
134     int (*waitfp)(caddr_t), caddr_t arg, ddi_dma_handle_t *);
135 
136 static int
137 isa_dma_mctl(dev_info_t *, dev_info_t *, ddi_dma_handle_t, enum ddi_dma_ctlops,
138     off_t *, size_t *, caddr_t *, uint_t);
139 
140 static int
141 isa_ctlops(dev_info_t *, dev_info_t *, ddi_ctl_enum_t, void *, void *);
142 
143 static int
144 isa_intr_ops(dev_info_t *pdip, dev_info_t *rdip, ddi_intr_op_t intr_op,
145     ddi_intr_handle_impl_t *hdlp, void *result);
146 
147 struct bus_ops isa_bus_ops = {
148 	BUSO_REV,
149 	isa_bus_map,
150 	NULL,
151 	NULL,
152 	NULL,
153 	i_ddi_map_fault,
154 	ddi_dma_map,
155 	isa_dma_allochdl,
156 	ddi_dma_freehdl,
157 	ddi_dma_bindhdl,
158 	ddi_dma_unbindhdl,
159 	ddi_dma_flush,
160 	ddi_dma_win,
161 	isa_dma_mctl,
162 	isa_ctlops,
163 	ddi_bus_prop_op,
164 	NULL,		/* (*bus_get_eventcookie)();	*/
165 	NULL,		/* (*bus_add_eventcall)();	*/
166 	NULL,		/* (*bus_remove_eventcall)();	*/
167 	NULL,		/* (*bus_post_event)();		*/
168 	NULL,		/* (*bus_intr_ctl)(); */
169 	NULL,		/* (*bus_config)(); */
170 	NULL,		/* (*bus_unconfig)(); */
171 	NULL,		/* (*bus_fm_init)(); */
172 	NULL,		/* (*bus_fm_fini)(); */
173 	NULL,		/* (*bus_fm_access_enter)(); */
174 	NULL,		/* (*bus_fm_access_exit)(); */
175 	NULL,		/* (*bus_power)(); */
176 	isa_intr_ops	/* (*bus_intr_op)(); */
177 };
178 
179 
180 static int isa_attach(dev_info_t *devi, ddi_attach_cmd_t cmd);
181 
182 /*
183  * Internal isa ctlops support routines
184  */
185 static int isa_initchild(dev_info_t *child);
186 
187 struct dev_ops isa_ops = {
188 	DEVO_REV,		/* devo_rev, */
189 	0,			/* refcnt  */
190 	ddi_no_info,		/* info */
191 	nulldev,		/* identify */
192 	nulldev,		/* probe */
193 	isa_attach,		/* attach */
194 	nulldev,		/* detach */
195 	nodev,			/* reset */
196 	(struct cb_ops *)0,	/* driver operations */
197 	&isa_bus_ops,		/* bus operations */
198 	NULL,			/* power */
199 	ddi_quiesce_not_needed,		/* quiesce */
200 };
201 
202 /*
203  * Module linkage information for the kernel.
204  */
205 
206 static struct modldrv modldrv = {
207 	&mod_driverops, /* Type of module.  This is ISA bus driver */
208 	"isa nexus driver for 'ISA'",
209 	&isa_ops,	/* driver ops */
210 };
211 
212 static struct modlinkage modlinkage = {
213 	MODREV_1,
214 	&modldrv,
215 	NULL
216 };
217 
218 int
219 _init(void)
220 {
221 	return (mod_install(&modlinkage));
222 }
223 
224 int
225 _fini(void)
226 {
227 	return (mod_remove(&modlinkage));
228 }
229 
230 int
231 _info(struct modinfo *modinfop)
232 {
233 	return (mod_info(&modlinkage, modinfop));
234 }
235 
236 static int
237 isa_attach(dev_info_t *devi, ddi_attach_cmd_t cmd)
238 {
239 	int rval;
240 
241 #if defined(__xpv)
242 	/*
243 	 * don't allow isa to attach in domU. this can happen if someone sets
244 	 * the console wrong, etc. ISA devices assume the H/W is there and
245 	 * will cause the domU to panic.
246 	 */
247 	if (!DOMAIN_IS_INITDOMAIN(xen_info)) {
248 		return (DDI_FAILURE);
249 	}
250 #endif
251 
252 	switch (cmd) {
253 	case DDI_ATTACH:
254 		break;
255 	case DDI_RESUME:
256 		return (DDI_SUCCESS);
257 	default:
258 		return (DDI_FAILURE);
259 	}
260 
261 	if ((rval = i_dmae_init(devi)) == DDI_SUCCESS) {
262 		ddi_report_dev(devi);
263 		/*
264 		 * Enumerate children -- invoking ACPICA
265 		 * This is normally in bus_config(), but we need this
266 		 * to happen earlier to boot.
267 		 */
268 		isa_alloc_nodes(devi);
269 	}
270 
271 	if (!pseudo_isa)
272 		isa_postattach(devi);
273 
274 	return (rval);
275 }
276 
277 #define	SET_RNGS(rng_p, used_p, ctyp, ptyp) do {			\
278 		(rng_p)->child_high = (ctyp);				\
279 		(rng_p)->child_low = (rng_p)->parent_low = (used_p)->base; \
280 		(rng_p)->parent_high = (ptyp);				\
281 		(rng_p)->parent_mid = 0;				\
282 		(rng_p)->size = (used_p)->len;				\
283 		_NOTE(CONSTCOND) } while (0)
284 static uint_t
285 isa_used_to_ranges(int ctype, int *array, uint_t size, pib_ranges_t *ranges)
286 {
287 	used_ranges_t *used_p;
288 	pib_ranges_t *rng_p = ranges;
289 	uint_t	i, ptype;
290 
291 	ptype = (ctype == ISA_ADDR_IO) ? PCI_ADDR_IO : PCI_ADDR_MEM32;
292 	ptype |= PCI_REG_REL_M;
293 	size /= USED_CELL_SIZE;
294 	used_p = (used_ranges_t *)array;
295 	SET_RNGS(rng_p, used_p, ctype, ptype);
296 	for (i = 1, used_p++; i < size; i++, used_p++) {
297 		/* merge ranges record if applicable */
298 		if (rng_p->child_low + rng_p->size == used_p->base)
299 			rng_p->size += used_p->len;
300 		else {
301 			rng_p++;
302 			SET_RNGS(rng_p, used_p, ctype, ptype);
303 		}
304 	}
305 	return (rng_p - ranges + 1);
306 }
307 
308 void
309 isa_remove_res_from_pci(int type, int *array, uint_t size)
310 {
311 	int i;
312 	used_ranges_t *used_p;
313 
314 	size /= USED_CELL_SIZE;
315 	used_p = (used_ranges_t *)array;
316 	for (i = 0; i < size; i++, used_p++)
317 		pci_remove_isa_resources(type, used_p->base, used_p->len);
318 }
319 
320 static void
321 isa_postattach(dev_info_t *dip)
322 {
323 	dev_info_t *used;
324 	int *ioarray, *memarray, status;
325 	uint_t nio = 0, nmem = 0, nrng = 0, n;
326 	pib_ranges_t *ranges;
327 
328 	used = ddi_find_devinfo("used-resources", -1, 0);
329 	if (used == NULL) {
330 		cmn_err(CE_WARN, "Failed to find used-resources <%s>\n",
331 		    ddi_get_name(dip));
332 		return;
333 	}
334 	status = ddi_prop_lookup_int_array(DDI_DEV_T_ANY, used,
335 	    DDI_PROP_DONTPASS, "io-space", &ioarray, &nio);
336 	if (status != DDI_PROP_SUCCESS && status != DDI_PROP_NOT_FOUND) {
337 		cmn_err(CE_WARN, "io-space property failure for %s (%x)\n",
338 		    ddi_get_name(used), status);
339 		return;
340 	}
341 	status = ddi_prop_lookup_int_array(DDI_DEV_T_ANY, used,
342 	    DDI_PROP_DONTPASS, "device-memory", &memarray, &nmem);
343 	if (status != DDI_PROP_SUCCESS && status != DDI_PROP_NOT_FOUND) {
344 		cmn_err(CE_WARN, "device-memory property failure for %s (%x)\n",
345 		    ddi_get_name(used), status);
346 		return;
347 	}
348 	n = (nio + nmem) / USED_CELL_SIZE;
349 	ranges =  (pib_ranges_t *)kmem_zalloc(sizeof (pib_ranges_t) * n,
350 	    KM_SLEEP);
351 
352 	if (nio != 0) {
353 		nrng = isa_used_to_ranges(ISA_ADDR_IO, ioarray, nio, ranges);
354 		isa_remove_res_from_pci(ISA_ADDR_IO, ioarray, nio);
355 		ddi_prop_free(ioarray);
356 	}
357 	if (nmem != 0) {
358 		nrng += isa_used_to_ranges(ISA_ADDR_MEM, memarray, nmem,
359 		    ranges + nrng);
360 		isa_remove_res_from_pci(ISA_ADDR_MEM, memarray, nmem);
361 		ddi_prop_free(memarray);
362 	}
363 
364 	(void) ndi_prop_update_int_array(DDI_DEV_T_NONE, dip, "ranges",
365 	    (int *)ranges, nrng * sizeof (pib_ranges_t) / sizeof (int));
366 	kmem_free(ranges, sizeof (pib_ranges_t) * n);
367 }
368 
369 /*ARGSUSED*/
370 static int
371 isa_apply_range(dev_info_t *dip, struct regspec *isa_reg_p,
372     pci_regspec_t *pci_reg_p)
373 {
374 	pib_ranges_t *ranges, *rng_p;
375 	int len, i, offset, nrange;
376 	static char out_of_range[] =
377 	    "Out of range register specification from device node <%s>";
378 
379 	if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
380 	    "ranges", (caddr_t)&ranges, &len) != DDI_SUCCESS) {
381 		cmn_err(CE_WARN, "Can't get %s ranges property",
382 		    ddi_get_name(dip));
383 		return (DDI_ME_REGSPEC_RANGE);
384 	}
385 	nrange = len / sizeof (pib_ranges_t);
386 	rng_p = ranges;
387 	for (i = 0; i < nrange; i++, rng_p++) {
388 		/* Check for correct space */
389 		if (isa_reg_p->regspec_bustype != rng_p->child_high)
390 			continue;
391 
392 		/* Detect whether request entirely fits within a range */
393 		if (isa_reg_p->regspec_addr < rng_p->child_low)
394 			continue;
395 		if ((isa_reg_p->regspec_addr + isa_reg_p->regspec_size) >
396 		    (rng_p->child_low + rng_p->size))
397 			continue;
398 
399 		offset = isa_reg_p->regspec_addr - rng_p->child_low;
400 
401 		pci_reg_p->pci_phys_hi = rng_p->parent_high;
402 		pci_reg_p->pci_phys_mid = 0;
403 		pci_reg_p->pci_phys_low = rng_p->parent_low + offset;
404 		pci_reg_p->pci_size_hi = 0;
405 		pci_reg_p->pci_size_low = isa_reg_p->regspec_size;
406 
407 		break;
408 	}
409 	kmem_free(ranges, len);
410 	if (i == nrange) {
411 		cmn_err(CE_WARN, out_of_range, ddi_get_name(dip));
412 		return (DDI_ME_REGSPEC_RANGE);
413 	}
414 
415 	return (DDI_SUCCESS);
416 }
417 
418 static int
419 isa_bus_map(dev_info_t *dip, dev_info_t *rdip, ddi_map_req_t *mp,
420     off_t offset, off_t len, caddr_t *vaddrp)
421 {
422 	struct regspec tmp_reg, *rp;
423 	pci_regspec_t vreg;
424 	ddi_map_req_t mr = *mp;		/* Get private copy of request */
425 	int error;
426 
427 	if (pseudo_isa)
428 		return (i_ddi_bus_map(dip, rdip, mp, offset, len, vaddrp));
429 
430 	mp = &mr;
431 
432 	/*
433 	 * First, if given an rnumber, convert it to a regspec...
434 	 */
435 	if (mp->map_type == DDI_MT_RNUMBER)  {
436 
437 		int rnumber = mp->map_obj.rnumber;
438 
439 		rp = i_ddi_rnumber_to_regspec(rdip, rnumber);
440 		if (rp == (struct regspec *)0)
441 			return (DDI_ME_RNUMBER_RANGE);
442 
443 		/*
444 		 * Convert the given ddi_map_req_t from rnumber to regspec...
445 		 */
446 		mp->map_type = DDI_MT_REGSPEC;
447 		mp->map_obj.rp = rp;
448 	}
449 
450 	/*
451 	 * Adjust offset and length correspnding to called values...
452 	 * XXX: A non-zero length means override the one in the regspec.
453 	 * XXX: (Regardless of what's in the parent's range)
454 	 */
455 
456 	tmp_reg = *(mp->map_obj.rp);		/* Preserve underlying data */
457 	rp = mp->map_obj.rp = &tmp_reg;		/* Use tmp_reg in request */
458 
459 	rp->regspec_addr += (uint_t)offset;
460 	if (len != 0)
461 		rp->regspec_size = (uint_t)len;
462 
463 	if ((error = isa_apply_range(dip, rp, &vreg)) != 0)
464 		return (error);
465 	mp->map_obj.rp = (struct regspec *)&vreg;
466 
467 	/*
468 	 * Call my parents bus_map function with modified values...
469 	 */
470 
471 	return (ddi_map(dip, mp, (off_t)0, (off_t)0, vaddrp));
472 }
473 
474 static int
475 isa_dma_allochdl(dev_info_t *dip, dev_info_t *rdip, ddi_dma_attr_t *dma_attr,
476     int (*waitfp)(caddr_t), caddr_t arg, ddi_dma_handle_t *handlep)
477 {
478 	ddi_dma_attr_merge(dma_attr, &ISA_dma_attr);
479 	return (ddi_dma_allochdl(dip, rdip, dma_attr, waitfp, arg, handlep));
480 }
481 
482 static int
483 isa_dma_mctl(dev_info_t *dip, dev_info_t *rdip,
484     ddi_dma_handle_t handle, enum ddi_dma_ctlops request,
485     off_t *offp, size_t *lenp, caddr_t *objp, uint_t flags)
486 {
487 	int rval;
488 	ddi_dma_lim_t defalt;
489 	int arg = (int)(uintptr_t)objp;
490 
491 	switch (request) {
492 
493 	case DDI_DMA_E_PROG:
494 		return (i_dmae_prog(rdip, (struct ddi_dmae_req *)offp,
495 		    (ddi_dma_cookie_t *)lenp, arg));
496 
497 	case DDI_DMA_E_ACQUIRE:
498 		return (i_dmae_acquire(rdip, arg, (int(*)(caddr_t))offp,
499 		    (caddr_t)lenp));
500 
501 	case DDI_DMA_E_FREE:
502 		return (i_dmae_free(rdip, arg));
503 
504 	case DDI_DMA_E_STOP:
505 		i_dmae_stop(rdip, arg);
506 		return (DDI_SUCCESS);
507 
508 	case DDI_DMA_E_ENABLE:
509 		i_dmae_enable(rdip, arg);
510 		return (DDI_SUCCESS);
511 
512 	case DDI_DMA_E_DISABLE:
513 		i_dmae_disable(rdip, arg);
514 		return (DDI_SUCCESS);
515 
516 	case DDI_DMA_E_GETCNT:
517 		i_dmae_get_chan_stat(rdip, arg, NULL, (int *)lenp);
518 		return (DDI_SUCCESS);
519 
520 	case DDI_DMA_E_SWSETUP:
521 		return (i_dmae_swsetup(rdip, (struct ddi_dmae_req *)offp,
522 		    (ddi_dma_cookie_t *)lenp, arg));
523 
524 	case DDI_DMA_E_SWSTART:
525 		i_dmae_swstart(rdip, arg);
526 		return (DDI_SUCCESS);
527 
528 	case DDI_DMA_E_GETLIM:
529 		bcopy(&ISA_dma_limits, objp, sizeof (ddi_dma_lim_t));
530 		return (DDI_SUCCESS);
531 
532 	case DDI_DMA_E_GETATTR:
533 		bcopy(&ISA_dma_attr, objp, sizeof (ddi_dma_attr_t));
534 		return (DDI_SUCCESS);
535 
536 	case DDI_DMA_E_1STPTY:
537 		{
538 			struct ddi_dmae_req req1stpty =
539 			    { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
540 			if (arg == 0) {
541 				req1stpty.der_command = DMAE_CMD_TRAN;
542 				req1stpty.der_trans = DMAE_TRANS_DMND;
543 			} else {
544 				req1stpty.der_trans = DMAE_TRANS_CSCD;
545 			}
546 			return (i_dmae_prog(rdip, &req1stpty, NULL, arg));
547 		}
548 
549 	case DDI_DMA_IOPB_ALLOC:	/* get contiguous DMA-able memory */
550 	case DDI_DMA_SMEM_ALLOC:
551 		if (!offp) {
552 			defalt = ISA_dma_limits;
553 			offp = (off_t *)&defalt;
554 		}
555 		/*FALLTHROUGH*/
556 	default:
557 		rval = ddi_dma_mctl(dip, rdip, handle, request, offp,
558 		    lenp, objp, flags);
559 	}
560 	return (rval);
561 }
562 
563 /*
564  * Check if driver should be treated as an old pre 2.6 driver
565  */
566 static int
567 old_driver(dev_info_t *dip)
568 {
569 	extern int ignore_hardware_nodes;	/* force flag from ddi_impl.c */
570 
571 	if (ndi_dev_is_persistent_node(dip)) {
572 		if (ignore_hardware_nodes)
573 			return (1);
574 		if (ddi_getprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
575 		    "ignore-hardware-nodes", -1) != -1)
576 			return (1);
577 	}
578 	return (0);
579 }
580 
581 typedef struct {
582 	uint32_t phys_hi;
583 	uint32_t phys_lo;
584 	uint32_t size;
585 } isa_regs_t;
586 
587 /*
588  * Return non-zero if device in tree is a PnP isa device
589  */
590 static int
591 is_pnpisa(dev_info_t *dip)
592 {
593 	isa_regs_t *isa_regs;
594 	int proplen, pnpisa;
595 
596 	if (ndi_dev_is_persistent_node(dip) == 0)
597 		return (0);
598 	if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "reg",
599 	    (caddr_t)&isa_regs, &proplen) != DDI_PROP_SUCCESS) {
600 		return (0);
601 	}
602 	pnpisa = isa_regs[0].phys_hi & 0x80000000;
603 	/*
604 	 * free the memory allocated by ddi_getlongprop().
605 	 */
606 	kmem_free(isa_regs, proplen);
607 	if (pnpisa)
608 		return (1);
609 	else
610 		return (0);
611 }
612 
613 /*ARGSUSED*/
614 static int
615 isa_ctlops(dev_info_t *dip, dev_info_t *rdip,
616 	ddi_ctl_enum_t ctlop, void *arg, void *result)
617 {
618 	int rn;
619 	struct ddi_parent_private_data *pdp;
620 
621 	switch (ctlop) {
622 	case DDI_CTLOPS_REPORTDEV:
623 		if (rdip == (dev_info_t *)0)
624 			return (DDI_FAILURE);
625 		cmn_err(CE_CONT, "?ISA-device: %s%d\n",
626 		    ddi_driver_name(rdip), ddi_get_instance(rdip));
627 		return (DDI_SUCCESS);
628 
629 	case DDI_CTLOPS_INITCHILD:
630 		/*
631 		 * older drivers aren't expecting the "standard" device
632 		 * node format used by the hardware nodes.  these drivers
633 		 * only expect their own properties set in their driver.conf
634 		 * files.  so they tell us not to call them with hardware
635 		 * nodes by setting the property "ignore-hardware-nodes".
636 		 */
637 		if (old_driver((dev_info_t *)arg)) {
638 			return (DDI_NOT_WELL_FORMED);
639 		}
640 
641 		return (isa_initchild((dev_info_t *)arg));
642 
643 	case DDI_CTLOPS_UNINITCHILD:
644 		impl_ddi_sunbus_removechild((dev_info_t *)arg);
645 		return (DDI_SUCCESS);
646 
647 	case DDI_CTLOPS_SIDDEV:
648 		/*
649 		 * All ISA devices need to do confirming probes
650 		 * unless they are PnP ISA.
651 		 */
652 		if (is_pnpisa(dip))
653 			return (DDI_SUCCESS);
654 		else
655 			return (DDI_FAILURE);
656 
657 	case DDI_CTLOPS_REGSIZE:
658 	case DDI_CTLOPS_NREGS:
659 		if (rdip == (dev_info_t *)0)
660 			return (DDI_FAILURE);
661 
662 		if ((pdp = ddi_get_parent_data(rdip)) == NULL)
663 			return (DDI_FAILURE);
664 
665 		if (ctlop == DDI_CTLOPS_NREGS) {
666 			*(int *)result = pdp->par_nreg;
667 		} else {
668 			rn = *(int *)arg;
669 			if (rn >= pdp->par_nreg)
670 				return (DDI_FAILURE);
671 			*(off_t *)result = (off_t)pdp->par_reg[rn].regspec_size;
672 		}
673 		return (DDI_SUCCESS);
674 
675 	case DDI_CTLOPS_ATTACH:
676 	case DDI_CTLOPS_DETACH:
677 	case DDI_CTLOPS_PEEK:
678 	case DDI_CTLOPS_POKE:
679 		return (DDI_FAILURE);
680 
681 	default:
682 		return (ddi_ctlops(dip, rdip, ctlop, arg, result));
683 	}
684 }
685 
686 static struct intrspec *
687 isa_get_ispec(dev_info_t *rdip, int inum)
688 {
689 	struct ddi_parent_private_data *pdp = ddi_get_parent_data(rdip);
690 
691 	/* Validate the interrupt number */
692 	if (inum >= pdp->par_nintr)
693 		return (NULL);
694 
695 	/* Get the interrupt structure pointer and return that */
696 	return ((struct intrspec *)&pdp->par_intr[inum]);
697 }
698 
699 static int
700 isa_intr_ops(dev_info_t *pdip, dev_info_t *rdip, ddi_intr_op_t intr_op,
701     ddi_intr_handle_impl_t *hdlp, void *result)
702 {
703 	struct intrspec *ispec;
704 
705 	if (pseudo_isa)
706 		return (i_ddi_intr_ops(pdip, rdip, intr_op, hdlp, result));
707 
708 
709 	/* Process the interrupt operation */
710 	switch (intr_op) {
711 	case DDI_INTROP_GETCAP:
712 		/* First check with pcplusmp */
713 		if (psm_intr_ops == NULL)
714 			return (DDI_FAILURE);
715 
716 		if ((*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_GET_CAP, result)) {
717 			*(int *)result = 0;
718 			return (DDI_FAILURE);
719 		}
720 		break;
721 	case DDI_INTROP_SETCAP:
722 		if (psm_intr_ops == NULL)
723 			return (DDI_FAILURE);
724 
725 		if ((*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_SET_CAP, result))
726 			return (DDI_FAILURE);
727 		break;
728 	case DDI_INTROP_ALLOC:
729 		if ((ispec = isa_get_ispec(rdip, hdlp->ih_inum)) == NULL)
730 			return (DDI_FAILURE);
731 		hdlp->ih_pri = ispec->intrspec_pri;
732 		*(int *)result = hdlp->ih_scratch1;
733 		break;
734 	case DDI_INTROP_FREE:
735 		break;
736 	case DDI_INTROP_GETPRI:
737 		if ((ispec = isa_get_ispec(rdip, hdlp->ih_inum)) == NULL)
738 			return (DDI_FAILURE);
739 		*(int *)result = ispec->intrspec_pri;
740 		break;
741 	case DDI_INTROP_SETPRI:
742 		/* Validate the interrupt priority passed to us */
743 		if (*(int *)result > LOCK_LEVEL)
744 			return (DDI_FAILURE);
745 
746 		/* Ensure that PSM is all initialized and ispec is ok */
747 		if ((psm_intr_ops == NULL) ||
748 		    ((ispec = isa_get_ispec(rdip, hdlp->ih_inum)) == NULL))
749 			return (DDI_FAILURE);
750 
751 		/* update the ispec with the new priority */
752 		ispec->intrspec_pri =  *(int *)result;
753 		break;
754 	case DDI_INTROP_ADDISR:
755 		if ((ispec = isa_get_ispec(rdip, hdlp->ih_inum)) == NULL)
756 			return (DDI_FAILURE);
757 		ispec->intrspec_func = hdlp->ih_cb_func;
758 		break;
759 	case DDI_INTROP_REMISR:
760 		if (hdlp->ih_type != DDI_INTR_TYPE_FIXED)
761 			return (DDI_FAILURE);
762 		if ((ispec = isa_get_ispec(rdip, hdlp->ih_inum)) == NULL)
763 			return (DDI_FAILURE);
764 		ispec->intrspec_func = (uint_t (*)()) 0;
765 		break;
766 	case DDI_INTROP_ENABLE:
767 		if ((ispec = isa_get_ispec(rdip, hdlp->ih_inum)) == NULL)
768 			return (DDI_FAILURE);
769 
770 		/* Call psmi to translate irq with the dip */
771 		if (psm_intr_ops == NULL)
772 			return (DDI_FAILURE);
773 
774 		((ihdl_plat_t *)hdlp->ih_private)->ip_ispecp = ispec;
775 		(void) (*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_XLATE_VECTOR,
776 		    (int *)&hdlp->ih_vector);
777 
778 		/* Add the interrupt handler */
779 		if (!add_avintr((void *)hdlp, ispec->intrspec_pri,
780 		    hdlp->ih_cb_func, DEVI(rdip)->devi_name, hdlp->ih_vector,
781 		    hdlp->ih_cb_arg1, hdlp->ih_cb_arg2, NULL, rdip))
782 			return (DDI_FAILURE);
783 		break;
784 	case DDI_INTROP_DISABLE:
785 		if ((ispec = isa_get_ispec(rdip, hdlp->ih_inum)) == NULL)
786 			return (DDI_FAILURE);
787 
788 		/* Call psm_ops() to translate irq with the dip */
789 		if (psm_intr_ops == NULL)
790 			return (DDI_FAILURE);
791 
792 		((ihdl_plat_t *)hdlp->ih_private)->ip_ispecp = ispec;
793 		(void) (*psm_intr_ops)(rdip, hdlp,
794 		    PSM_INTR_OP_XLATE_VECTOR, (int *)&hdlp->ih_vector);
795 
796 		/* Remove the interrupt handler */
797 		rem_avintr((void *)hdlp, ispec->intrspec_pri,
798 		    hdlp->ih_cb_func, hdlp->ih_vector);
799 		break;
800 	case DDI_INTROP_SETMASK:
801 		if (psm_intr_ops == NULL)
802 			return (DDI_FAILURE);
803 
804 		if ((*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_SET_MASK, NULL))
805 			return (DDI_FAILURE);
806 		break;
807 	case DDI_INTROP_CLRMASK:
808 		if (psm_intr_ops == NULL)
809 			return (DDI_FAILURE);
810 
811 		if ((*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_CLEAR_MASK, NULL))
812 			return (DDI_FAILURE);
813 		break;
814 	case DDI_INTROP_GETPENDING:
815 		if (psm_intr_ops == NULL)
816 			return (DDI_FAILURE);
817 
818 		if ((*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_GET_PENDING,
819 		    result)) {
820 			*(int *)result = 0;
821 			return (DDI_FAILURE);
822 		}
823 		break;
824 	case DDI_INTROP_NAVAIL:
825 	case DDI_INTROP_NINTRS:
826 		*(int *)result = i_ddi_get_intx_nintrs(rdip);
827 		if (*(int *)result == 0) {
828 			return (DDI_FAILURE);
829 		}
830 		break;
831 	case DDI_INTROP_SUPPORTED_TYPES:
832 		*(int *)result = DDI_INTR_TYPE_FIXED;	/* Always ... */
833 		break;
834 	default:
835 		return (DDI_FAILURE);
836 	}
837 
838 	return (DDI_SUCCESS);
839 }
840 
841 static void
842 isa_vendor(uint32_t id, char *vendor)
843 {
844 	vendor[0] = '@' + ((id >> 26) & 0x1f);
845 	vendor[1] = '@' + ((id >> 21) & 0x1f);
846 	vendor[2] = '@' + ((id >> 16) & 0x1f);
847 	vendor[3] = 0;
848 }
849 
850 /*
851  * Name a child
852  */
853 static int
854 isa_name_child(dev_info_t *child, char *name, int namelen)
855 {
856 	char vendor[8];
857 	int device;
858 	uint32_t serial;
859 	int func;
860 	int bustype;
861 	uint32_t base;
862 	int proplen;
863 	int pnpisa = 0;
864 	isa_regs_t *isa_regs;
865 
866 	void make_ddi_ppd(dev_info_t *, struct ddi_parent_private_data **);
867 
868 	/*
869 	 * older drivers aren't expecting the "standard" device
870 	 * node format used by the hardware nodes.  these drivers
871 	 * only expect their own properties set in their driver.conf
872 	 * files.  so they tell us not to call them with hardware
873 	 * nodes by setting the property "ignore-hardware-nodes".
874 	 */
875 	if (old_driver(child))
876 		return (DDI_FAILURE);
877 
878 	/*
879 	 * Fill in parent-private data
880 	 */
881 	if (ddi_get_parent_data(child) == NULL) {
882 		struct ddi_parent_private_data *pdptr;
883 		make_ddi_ppd(child, &pdptr);
884 		ddi_set_parent_data(child, pdptr);
885 	}
886 
887 	if (ndi_dev_is_persistent_node(child) == 0) {
888 		/*
889 		 * For .conf nodes, generate name from parent private data
890 		 */
891 		name[0] = '\0';
892 		if (sparc_pd_getnreg(child) > 0) {
893 			(void) snprintf(name, namelen, "%x,%x",
894 			    (uint_t)sparc_pd_getreg(child, 0)->regspec_bustype,
895 			    (uint_t)sparc_pd_getreg(child, 0)->regspec_addr);
896 		}
897 		return (DDI_SUCCESS);
898 	}
899 
900 	/*
901 	 * For hw nodes, look up "reg" property
902 	 */
903 	if (ddi_getlongprop(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "reg",
904 	    (caddr_t)&isa_regs, &proplen) != DDI_PROP_SUCCESS) {
905 		return (DDI_FAILURE);
906 	}
907 
908 	/*
909 	 * extract the device identifications
910 	 */
911 	pnpisa = isa_regs[0].phys_hi & 0x80000000;
912 	if (pnpisa) {
913 		isa_vendor(isa_regs[0].phys_hi, vendor);
914 		device = isa_regs[0].phys_hi & 0xffff;
915 		serial = isa_regs[0].phys_lo;
916 		func = (isa_regs[0].size >> 24) & 0xff;
917 		if (func != 0)
918 			(void) snprintf(name, namelen, "pnp%s,%04x,%x,%x",
919 			    vendor, device, serial, func);
920 		else
921 			(void) snprintf(name, namelen, "pnp%s,%04x,%x",
922 			    vendor, device, serial);
923 	} else {
924 		bustype = isa_regs[0].phys_hi;
925 		base = isa_regs[0].phys_lo;
926 		(void) sprintf(name, "%x,%x", bustype, base);
927 	}
928 
929 	/*
930 	 * free the memory allocated by ddi_getlongprop().
931 	 */
932 	kmem_free(isa_regs, proplen);
933 
934 	return (DDI_SUCCESS);
935 }
936 
937 static int
938 isa_initchild(dev_info_t *child)
939 {
940 	char name[80];
941 
942 	if (isa_name_child(child, name, 80) != DDI_SUCCESS)
943 		return (DDI_FAILURE);
944 	ddi_set_name_addr(child, name);
945 
946 	if (ndi_dev_is_persistent_node(child) != 0)
947 		return (DDI_SUCCESS);
948 
949 	/*
950 	 * This is a .conf node, try merge properties onto a
951 	 * hw node with the same name.
952 	 */
953 	if (ndi_merge_node(child, isa_name_child) == DDI_SUCCESS) {
954 		/*
955 		 * Return failure to remove node
956 		 */
957 		impl_ddi_sunbus_removechild(child);
958 		return (DDI_FAILURE);
959 	}
960 	/*
961 	 * Cannot merge node, permit pseudo children
962 	 */
963 	return (DDI_SUCCESS);
964 }
965 
966 /*
967  * called when ACPI enumeration is not used
968  */
969 static void
970 add_known_used_resources(void)
971 {
972 	/* needs to be in increasing order */
973 	int intr[] = {0x1, 0x3, 0x4, 0x6, 0x7, 0xc};
974 	int dma[] = {0x2};
975 	int io[] = {0x60, 0x1, 0x64, 0x1, 0x2f8, 0x8, 0x378, 0x8, 0x3f0, 0x10,
976 	    0x778, 0x4};
977 	dev_info_t *usedrdip;
978 
979 	usedrdip = ddi_find_devinfo(USED_RESOURCES, -1, 0);
980 
981 	if (usedrdip == NULL) {
982 		(void) ndi_devi_alloc_sleep(ddi_root_node(), USED_RESOURCES,
983 		    (pnode_t)DEVI_SID_NODEID, &usedrdip);
984 	}
985 
986 	(void) ndi_prop_update_int_array(DDI_DEV_T_NONE, usedrdip,
987 	    "interrupts", (int *)intr, (int)(sizeof (intr) / sizeof (int)));
988 	(void) ndi_prop_update_int_array(DDI_DEV_T_NONE, usedrdip,
989 	    "io-space", (int *)io, (int)(sizeof (io) / sizeof (int)));
990 	(void) ndi_prop_update_int_array(DDI_DEV_T_NONE, usedrdip,
991 	    "dma-channels", (int *)dma, (int)(sizeof (dma) / sizeof (int)));
992 	(void) ndi_devi_bind_driver(usedrdip, 0);
993 
994 }
995 
996 static void
997 isa_alloc_nodes(dev_info_t *isa_dip)
998 {
999 	static int alloced = 0;
1000 	int circ, i;
1001 	dev_info_t *xdip;
1002 
1003 	/* hard coded isa stuff */
1004 	struct regspec asy_regs[] = {
1005 		{1, 0x3f8, 0x8},
1006 		{1, 0x2f8, 0x8}
1007 	};
1008 	int asy_intrs[] = {0x4, 0x3};
1009 
1010 	struct regspec i8042_regs[] = {
1011 		{1, 0x60, 0x1},
1012 		{1, 0x64, 0x1}
1013 	};
1014 	int i8042_intrs[] = {0x1, 0xc};
1015 	char *acpi_prop;
1016 	int acpi_enum = 1; /* ACPI is default to be on */
1017 
1018 	if (alloced)
1019 		return;
1020 
1021 	ndi_devi_enter(isa_dip, &circ);
1022 	if (alloced) {	/* just in case we are multi-threaded */
1023 		ndi_devi_exit(isa_dip, circ);
1024 		return;
1025 	}
1026 	alloced = 1;
1027 
1028 	if (ddi_prop_lookup_string(DDI_DEV_T_ANY, ddi_root_node(),
1029 	    DDI_PROP_DONTPASS, "acpi-enum", &acpi_prop) == DDI_PROP_SUCCESS) {
1030 		acpi_enum = strcmp("off", acpi_prop);
1031 		ddi_prop_free(acpi_prop);
1032 	}
1033 
1034 	if (acpi_enum) {
1035 		if (acpi_isa_device_enum(isa_dip)) {
1036 			ndi_devi_exit(isa_dip, circ);
1037 			if (isa_resource_setup() != NDI_SUCCESS) {
1038 				cmn_err(CE_WARN, "isa nexus: isa "
1039 				    "resource setup failed");
1040 			}
1041 
1042 			/* serial ports? */
1043 			enumerate_BIOS_serial(isa_dip);
1044 			return;
1045 		}
1046 		cmn_err(CE_NOTE, "!Solaris did not detect ACPI BIOS");
1047 	}
1048 	cmn_err(CE_NOTE, "!ACPI is off");
1049 
1050 	/* serial ports */
1051 	for (i = 0; i < 2; i++) {
1052 #if defined(__xpv)
1053 		/*
1054 		 * the hypervisor may be reserving the serial ports for console
1055 		 * and/or debug use.  Probe the irqs to see if they are
1056 		 * available.
1057 		 */
1058 		if (ec_probe_pirq(asy_intrs[i]) == 0)
1059 			continue; /* in use */
1060 #endif
1061 		ndi_devi_alloc_sleep(isa_dip, "asy",
1062 		    (pnode_t)DEVI_SID_NODEID, &xdip);
1063 		(void) ndi_prop_update_int_array(DDI_DEV_T_NONE, xdip,
1064 		    "reg", (int *)&asy_regs[i], 3);
1065 		(void) ndi_prop_update_int(DDI_DEV_T_NONE, xdip,
1066 		    "interrupts", asy_intrs[i]);
1067 		(void) ndi_devi_bind_driver(xdip, 0);
1068 	}
1069 
1070 	/* i8042 node */
1071 	ndi_devi_alloc_sleep(isa_dip, "i8042",
1072 	    (pnode_t)DEVI_SID_NODEID, &xdip);
1073 	(void) ndi_prop_update_int_array(DDI_DEV_T_NONE, xdip,
1074 	    "reg", (int *)i8042_regs, 6);
1075 	(void) ndi_prop_update_int_array(DDI_DEV_T_NONE, xdip,
1076 	    "interrupts", (int *)i8042_intrs, 2);
1077 	(void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip,
1078 	    "unit-address", "1,60");
1079 	(void) ndi_devi_bind_driver(xdip, 0);
1080 
1081 	add_known_used_resources();
1082 
1083 	ndi_devi_exit(isa_dip, circ);
1084 
1085 }
1086 
1087 /*
1088  * On some machines, serial port 2 isn't listed in the ACPI table.
1089  * This function goes through the BIOS data area and makes sure all
1090  * the serial ports there are in the dev_info tree.  If any are missing,
1091  * this function will add them.
1092  */
1093 
1094 static int num_BIOS_serial = 2;	/* number of BIOS serial ports to look at */
1095 
1096 static void
1097 enumerate_BIOS_serial(dev_info_t *isa_dip)
1098 {
1099 	ushort_t *bios_data;
1100 	int i;
1101 	dev_info_t *xdip;
1102 	int found;
1103 	int ret;
1104 	struct regspec *tmpregs;
1105 	int tmpregs_len;
1106 	static struct regspec tmp_asy_regs[] = {
1107 		{1, 0x3f8, 0x8},
1108 	};
1109 	static int default_asy_intrs[] = { 4, 3, 4, 3 };
1110 	static size_t size = 4;
1111 
1112 	/*
1113 	 * The first four 2-byte quantities of the BIOS data area contain
1114 	 * the base I/O addresses of the first four serial ports.
1115 	 */
1116 	bios_data = (ushort_t *)psm_map_new((paddr_t)BIOS_DATA_AREA, size,
1117 	    PSM_PROT_READ);
1118 	for (i = 0; i < num_BIOS_serial; i++) {
1119 		if (bios_data[i] == 0) {
1120 			/* no COM[i]: port */
1121 			continue;
1122 		}
1123 
1124 		/* Look for it in the dev_info tree */
1125 		found = 0;
1126 		for (xdip = ddi_get_child(isa_dip); xdip != NULL;
1127 		    xdip = ddi_get_next_sibling(xdip)) {
1128 			if (strncmp(ddi_node_name(xdip), "asy", 3) != 0) {
1129 				/* skip non asy */
1130 				continue;
1131 			}
1132 
1133 			/* Match by addr */
1134 			ret = ddi_prop_lookup_int_array(DDI_DEV_T_ANY, xdip,
1135 			    DDI_PROP_DONTPASS, "reg", (int **)&tmpregs,
1136 			    (uint_t *)&tmpregs_len);
1137 			if (ret != DDI_PROP_SUCCESS) {
1138 				/* error */
1139 				continue;
1140 			}
1141 
1142 			if (tmpregs->regspec_addr == bios_data[i])
1143 				found = 1;
1144 			/*
1145 			 * Free the memory allocated by
1146 			 * ddi_prop_lookup_int_array().
1147 			 */
1148 			ddi_prop_free(tmpregs);
1149 
1150 		}
1151 
1152 		/* If not found, then add it */
1153 		if (!found) {
1154 			ndi_devi_alloc_sleep(isa_dip, "asy",
1155 			    (pnode_t)DEVI_SID_NODEID, &xdip);
1156 			(void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip,
1157 			    "compatible", "PNP0500");
1158 			/* This should be gotten from master file: */
1159 			(void) ndi_prop_update_string(DDI_DEV_T_NONE, xdip,
1160 			    "model", "Standard PC COM port");
1161 			tmp_asy_regs[0].regspec_addr = bios_data[i];
1162 			(void) ndi_prop_update_int_array(DDI_DEV_T_NONE, xdip,
1163 			    "reg", (int *)&tmp_asy_regs[0], 3);
1164 			(void) ndi_prop_update_int(DDI_DEV_T_NONE, xdip,
1165 			    "interrupts", default_asy_intrs[i]);
1166 			(void) ndi_devi_bind_driver(xdip, 0);
1167 		}
1168 	}
1169 #if defined(__xpv)
1170 	/*
1171 	 * Check each serial port to see if it is in use by the hypervisor.
1172 	 * If it is in use, then remove the node from the device tree.
1173 	 */
1174 	i = 0;
1175 	for (xdip = ddi_get_child(isa_dip); xdip != NULL; ) {
1176 		int asy_intr;
1177 		dev_info_t *curdip;
1178 
1179 		curdip = xdip;
1180 		xdip = ddi_get_next_sibling(xdip);
1181 		if (strncmp(ddi_node_name(curdip), "asy", 3) != 0) {
1182 			/* skip non asy */
1183 			continue;
1184 		}
1185 		/*
1186 		 * Check if the hypervisor is using the serial port by probing
1187 		 * the irq and if it is using it remove the node
1188 		 * from the device tree
1189 		 */
1190 		asy_intr = ddi_prop_get_int(DDI_DEV_T_ANY, curdip,
1191 		    DDI_PROP_DONTPASS, "interrupts", -1);
1192 		if (asy_intr == -1) {
1193 			/* error */
1194 			continue;
1195 		}
1196 
1197 		if (ec_probe_pirq(asy_intr)) {
1198 			continue;
1199 		}
1200 		ret = ndi_devi_free(curdip);
1201 		if (ret != DDI_SUCCESS)
1202 			cmn_err(CE_WARN,
1203 			    "could not remove asy%d node", i);
1204 		else
1205 			cmn_err(CE_NOTE, "!asy%d unavailable, reserved"
1206 			    " to hypervisor", i);
1207 		i++;
1208 	}
1209 #endif	/* __xpv */
1210 
1211 	psm_unmap((caddr_t)bios_data, size);
1212 }
1213