xref: /illumos-gate/usr/src/uts/intel/io/acpica/osl.c (revision 26f3cdf0)
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 /*
23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  * Copyright 2011 Joyent, Inc.  All rights reserved.
26  */
27 /*
28  * Copyright (c) 2009-2010, Intel Corporation.
29  * All rights reserved.
30  */
31 /*
32  * ACPI CA OSL for Solaris x86
33  */
34 
35 #include <sys/types.h>
36 #include <sys/kmem.h>
37 #include <sys/psm.h>
38 #include <sys/pci_cfgspace.h>
39 #include <sys/apic.h>
40 #include <sys/ddi.h>
41 #include <sys/sunddi.h>
42 #include <sys/sunndi.h>
43 #include <sys/pci.h>
44 #include <sys/kobj.h>
45 #include <sys/taskq.h>
46 #include <sys/strlog.h>
47 #include <sys/x86_archext.h>
48 #include <sys/note.h>
49 #include <sys/promif.h>
50 
51 #include <sys/acpi/accommon.h>
52 #include <sys/acpica.h>
53 
54 #define	MAX_DAT_FILE_SIZE	(64*1024)
55 
56 /* local functions */
57 static int CompressEisaID(char *np);
58 
59 static void scan_d2a_subtree(dev_info_t *dip, ACPI_HANDLE acpiobj, int bus);
60 static int acpica_query_bbn_problem(void);
61 static int acpica_find_pcibus(int busno, ACPI_HANDLE *rh);
62 static int acpica_eval_hid(ACPI_HANDLE dev, char *method, int *rint);
63 static ACPI_STATUS acpica_set_devinfo(ACPI_HANDLE, dev_info_t *);
64 static ACPI_STATUS acpica_unset_devinfo(ACPI_HANDLE);
65 static void acpica_devinfo_handler(ACPI_HANDLE, void *);
66 
67 /*
68  * Event queue vars
69  */
70 int acpica_eventq_init = 0;
71 ddi_taskq_t *osl_eventq[OSL_EC_BURST_HANDLER+1];
72 
73 /*
74  * Priorities relative to minclsyspri that each taskq
75  * run at; OSL_NOTIFY_HANDLER needs to run at a higher
76  * priority than OSL_GPE_HANDLER.  There's an implicit
77  * assumption that no priority here results in exceeding
78  * maxclsyspri.
79  * Note: these initializations need to match the order of
80  * ACPI_EXECUTE_TYPE.
81  */
82 int osl_eventq_pri_delta[OSL_EC_BURST_HANDLER+1] = {
83 	0,	/* OSL_GLOBAL_LOCK_HANDLER */
84 	2,	/* OSL_NOTIFY_HANDLER */
85 	0,	/* OSL_GPE_HANDLER */
86 	0,	/* OSL_DEBUGGER_THREAD */
87 	0,	/* OSL_EC_POLL_HANDLER */
88 	0	/* OSL_EC_BURST_HANDLER */
89 };
90 
91 /*
92  * Note, if you change this path, you need to update
93  * /boot/grub/filelist.ramdisk and pkg SUNWckr/prototype_i386
94  */
95 static char *acpi_table_path = "/boot/acpi/tables/";
96 
97 /* non-zero while scan_d2a_map() is working */
98 static int scanning_d2a_map = 0;
99 static int d2a_done = 0;
100 
101 /* features supported by ACPICA and ACPI device configuration. */
102 uint64_t acpica_core_features = ACPI_FEATURE_OSI_MODULE;
103 static uint64_t acpica_devcfg_features = 0;
104 
105 /* set by acpi_poweroff() in PSMs and appm_ioctl() in acpippm for S3 */
106 int acpica_use_safe_delay = 0;
107 
108 /* CPU mapping data */
109 struct cpu_map_item {
110 	processorid_t	cpu_id;
111 	UINT32		proc_id;
112 	UINT32		apic_id;
113 	ACPI_HANDLE	obj;
114 };
115 
116 kmutex_t cpu_map_lock;
117 static struct cpu_map_item **cpu_map = NULL;
118 static int cpu_map_count_max = 0;
119 static int cpu_map_count = 0;
120 static int cpu_map_built = 0;
121 
122 /*
123  * On systems with the uppc PSM only, acpica_map_cpu() won't be called at all.
124  * This flag is used to check for uppc-only systems by detecting whether
125  * acpica_map_cpu() has been called or not.
126  */
127 static int cpu_map_called = 0;
128 
129 static int acpi_has_broken_bbn = -1;
130 
131 /* buffer for AcpiOsVprintf() */
132 #define	ACPI_OSL_PR_BUFLEN	1024
133 static char *acpi_osl_pr_buffer = NULL;
134 static int acpi_osl_pr_buflen;
135 
136 #define	D2A_DEBUG
137 
138 /*
139  *
140  */
141 static void
142 discard_event_queues()
143 {
144 	int	i;
145 
146 	/*
147 	 * destroy event queues
148 	 */
149 	for (i = OSL_GLOBAL_LOCK_HANDLER; i <= OSL_EC_BURST_HANDLER; i++) {
150 		if (osl_eventq[i])
151 			ddi_taskq_destroy(osl_eventq[i]);
152 	}
153 }
154 
155 
156 /*
157  *
158  */
159 static ACPI_STATUS
160 init_event_queues()
161 {
162 	char	namebuf[32];
163 	int	i, error = 0;
164 
165 	/*
166 	 * Initialize event queues
167 	 */
168 
169 	/* Always allocate only 1 thread per queue to force FIFO execution */
170 	for (i = OSL_GLOBAL_LOCK_HANDLER; i <= OSL_EC_BURST_HANDLER; i++) {
171 		snprintf(namebuf, 32, "ACPI%d", i);
172 		osl_eventq[i] = ddi_taskq_create(NULL, namebuf, 1,
173 		    osl_eventq_pri_delta[i] + minclsyspri, 0);
174 		if (osl_eventq[i] == NULL)
175 			error++;
176 	}
177 
178 	if (error != 0) {
179 		discard_event_queues();
180 #ifdef	DEBUG
181 		cmn_err(CE_WARN, "!acpica: could not initialize event queues");
182 #endif
183 		return (AE_ERROR);
184 	}
185 
186 	acpica_eventq_init = 1;
187 	return (AE_OK);
188 }
189 
190 /*
191  * One-time initialization of OSL layer
192  */
193 ACPI_STATUS
194 AcpiOsInitialize(void)
195 {
196 	/*
197 	 * Allocate buffer for AcpiOsVprintf() here to avoid
198 	 * kmem_alloc()/kmem_free() at high PIL
199 	 */
200 	acpi_osl_pr_buffer = kmem_alloc(ACPI_OSL_PR_BUFLEN, KM_SLEEP);
201 	if (acpi_osl_pr_buffer != NULL)
202 		acpi_osl_pr_buflen = ACPI_OSL_PR_BUFLEN;
203 
204 	return (AE_OK);
205 }
206 
207 /*
208  * One-time shut-down of OSL layer
209  */
210 ACPI_STATUS
211 AcpiOsTerminate(void)
212 {
213 
214 	if (acpi_osl_pr_buffer != NULL)
215 		kmem_free(acpi_osl_pr_buffer, acpi_osl_pr_buflen);
216 
217 	discard_event_queues();
218 	return (AE_OK);
219 }
220 
221 
222 ACPI_PHYSICAL_ADDRESS
223 AcpiOsGetRootPointer()
224 {
225 	ACPI_PHYSICAL_ADDRESS Address;
226 
227 	/*
228 	 * For EFI firmware, the root pointer is defined in EFI systab.
229 	 * The boot code process the table and put the physical address
230 	 * in the acpi-root-tab property.
231 	 */
232 	Address = ddi_prop_get_int(DDI_DEV_T_ANY, ddi_root_node(),
233 	    DDI_PROP_DONTPASS, "acpi-root-tab", NULL);
234 
235 	if ((Address == NULL) && ACPI_FAILURE(AcpiFindRootPointer(&Address)))
236 		Address = NULL;
237 
238 	return (Address);
239 }
240 
241 /*ARGSUSED*/
242 ACPI_STATUS
243 AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES *InitVal,
244 				ACPI_STRING *NewVal)
245 {
246 
247 	*NewVal = 0;
248 	return (AE_OK);
249 }
250 
251 static void
252 acpica_strncpy(char *dest, const char *src, int len)
253 {
254 
255 	/*LINTED*/
256 	while ((*dest++ = *src++) && (--len > 0))
257 		/* copy the string */;
258 	*dest = '\0';
259 }
260 
261 ACPI_STATUS
262 AcpiOsTableOverride(ACPI_TABLE_HEADER *ExistingTable,
263 			ACPI_TABLE_HEADER **NewTable)
264 {
265 	char signature[5];
266 	char oemid[7];
267 	char oemtableid[9];
268 	struct _buf *file;
269 	char *buf1, *buf2;
270 	int count;
271 	char acpi_table_loc[128];
272 
273 	acpica_strncpy(signature, ExistingTable->Signature, 4);
274 	acpica_strncpy(oemid, ExistingTable->OemId, 6);
275 	acpica_strncpy(oemtableid, ExistingTable->OemTableId, 8);
276 
277 #ifdef	DEBUG
278 	cmn_err(CE_NOTE, "!acpica: table [%s] v%d OEM ID [%s]"
279 	    " OEM TABLE ID [%s] OEM rev %x",
280 	    signature, ExistingTable->Revision, oemid, oemtableid,
281 	    ExistingTable->OemRevision);
282 #endif
283 
284 	/* File name format is "signature_oemid_oemtableid.dat" */
285 	(void) strcpy(acpi_table_loc, acpi_table_path);
286 	(void) strcat(acpi_table_loc, signature); /* for example, DSDT */
287 	(void) strcat(acpi_table_loc, "_");
288 	(void) strcat(acpi_table_loc, oemid); /* for example, IntelR */
289 	(void) strcat(acpi_table_loc, "_");
290 	(void) strcat(acpi_table_loc, oemtableid); /* for example, AWRDACPI */
291 	(void) strcat(acpi_table_loc, ".dat");
292 
293 	file = kobj_open_file(acpi_table_loc);
294 	if (file == (struct _buf *)-1) {
295 		*NewTable = 0;
296 		return (AE_OK);
297 	} else {
298 		buf1 = (char *)kmem_alloc(MAX_DAT_FILE_SIZE, KM_SLEEP);
299 		count = kobj_read_file(file, buf1, MAX_DAT_FILE_SIZE-1, 0);
300 		if (count >= MAX_DAT_FILE_SIZE) {
301 			cmn_err(CE_WARN, "!acpica: table %s file size too big",
302 			    acpi_table_loc);
303 			*NewTable = 0;
304 		} else {
305 			buf2 = (char *)kmem_alloc(count, KM_SLEEP);
306 			(void) memcpy(buf2, buf1, count);
307 			*NewTable = (ACPI_TABLE_HEADER *)buf2;
308 			cmn_err(CE_NOTE, "!acpica: replacing table: %s",
309 			    acpi_table_loc);
310 		}
311 	}
312 	kobj_close_file(file);
313 	kmem_free(buf1, MAX_DAT_FILE_SIZE);
314 
315 	return (AE_OK);
316 }
317 
318 
319 /*
320  * ACPI semaphore implementation
321  */
322 typedef struct {
323 	kmutex_t	mutex;
324 	kcondvar_t	cv;
325 	uint32_t	available;
326 	uint32_t	initial;
327 	uint32_t	maximum;
328 } acpi_sema_t;
329 
330 /*
331  *
332  */
333 void
334 acpi_sema_init(acpi_sema_t *sp, unsigned max, unsigned count)
335 {
336 	mutex_init(&sp->mutex, NULL, MUTEX_DRIVER, NULL);
337 	cv_init(&sp->cv, NULL, CV_DRIVER, NULL);
338 	/* no need to enter mutex here at creation */
339 	sp->available = count;
340 	sp->initial = count;
341 	sp->maximum = max;
342 }
343 
344 /*
345  *
346  */
347 void
348 acpi_sema_destroy(acpi_sema_t *sp)
349 {
350 
351 	cv_destroy(&sp->cv);
352 	mutex_destroy(&sp->mutex);
353 }
354 
355 /*
356  *
357  */
358 ACPI_STATUS
359 acpi_sema_p(acpi_sema_t *sp, unsigned count, uint16_t wait_time)
360 {
361 	ACPI_STATUS rv = AE_OK;
362 	clock_t deadline;
363 
364 	mutex_enter(&sp->mutex);
365 
366 	if (sp->available >= count) {
367 		/*
368 		 * Enough units available, no blocking
369 		 */
370 		sp->available -= count;
371 		mutex_exit(&sp->mutex);
372 		return (rv);
373 	} else if (wait_time == 0) {
374 		/*
375 		 * Not enough units available and timeout
376 		 * specifies no blocking
377 		 */
378 		rv = AE_TIME;
379 		mutex_exit(&sp->mutex);
380 		return (rv);
381 	}
382 
383 	/*
384 	 * Not enough units available and timeout specifies waiting
385 	 */
386 	if (wait_time != ACPI_WAIT_FOREVER)
387 		deadline = ddi_get_lbolt() +
388 		    (clock_t)drv_usectohz(wait_time * 1000);
389 
390 	do {
391 		if (wait_time == ACPI_WAIT_FOREVER)
392 			cv_wait(&sp->cv, &sp->mutex);
393 		else if (cv_timedwait(&sp->cv, &sp->mutex, deadline) < 0) {
394 			rv = AE_TIME;
395 			break;
396 		}
397 	} while (sp->available < count);
398 
399 	/* if we dropped out of the wait with AE_OK, we got the units */
400 	if (rv == AE_OK)
401 		sp->available -= count;
402 
403 	mutex_exit(&sp->mutex);
404 	return (rv);
405 }
406 
407 /*
408  *
409  */
410 void
411 acpi_sema_v(acpi_sema_t *sp, unsigned count)
412 {
413 	mutex_enter(&sp->mutex);
414 	sp->available += count;
415 	cv_broadcast(&sp->cv);
416 	mutex_exit(&sp->mutex);
417 }
418 
419 
420 ACPI_STATUS
421 AcpiOsCreateSemaphore(UINT32 MaxUnits, UINT32 InitialUnits,
422 ACPI_HANDLE *OutHandle)
423 {
424 	acpi_sema_t *sp;
425 
426 	if ((OutHandle == NULL) || (InitialUnits > MaxUnits))
427 		return (AE_BAD_PARAMETER);
428 
429 	sp = (acpi_sema_t *)kmem_alloc(sizeof (acpi_sema_t), KM_SLEEP);
430 	acpi_sema_init(sp, MaxUnits, InitialUnits);
431 	*OutHandle = (ACPI_HANDLE)sp;
432 	return (AE_OK);
433 }
434 
435 
436 ACPI_STATUS
437 AcpiOsDeleteSemaphore(ACPI_HANDLE Handle)
438 {
439 
440 	if (Handle == NULL)
441 		return (AE_BAD_PARAMETER);
442 
443 	acpi_sema_destroy((acpi_sema_t *)Handle);
444 	kmem_free((void *)Handle, sizeof (acpi_sema_t));
445 	return (AE_OK);
446 }
447 
448 ACPI_STATUS
449 AcpiOsWaitSemaphore(ACPI_HANDLE Handle, UINT32 Units, UINT16 Timeout)
450 {
451 
452 	if ((Handle == NULL) || (Units < 1))
453 		return (AE_BAD_PARAMETER);
454 
455 	return (acpi_sema_p((acpi_sema_t *)Handle, Units, Timeout));
456 }
457 
458 ACPI_STATUS
459 AcpiOsSignalSemaphore(ACPI_HANDLE Handle, UINT32 Units)
460 {
461 
462 	if ((Handle == NULL) || (Units < 1))
463 		return (AE_BAD_PARAMETER);
464 
465 	acpi_sema_v((acpi_sema_t *)Handle, Units);
466 	return (AE_OK);
467 }
468 
469 ACPI_STATUS
470 AcpiOsCreateLock(ACPI_HANDLE *OutHandle)
471 {
472 	kmutex_t *mp;
473 
474 	if (OutHandle == NULL)
475 		return (AE_BAD_PARAMETER);
476 
477 	mp = (kmutex_t *)kmem_alloc(sizeof (kmutex_t), KM_SLEEP);
478 	mutex_init(mp, NULL, MUTEX_DRIVER, NULL);
479 	*OutHandle = (ACPI_HANDLE)mp;
480 	return (AE_OK);
481 }
482 
483 void
484 AcpiOsDeleteLock(ACPI_HANDLE Handle)
485 {
486 
487 	if (Handle == NULL)
488 		return;
489 
490 	mutex_destroy((kmutex_t *)Handle);
491 	kmem_free((void *)Handle, sizeof (kmutex_t));
492 }
493 
494 ACPI_CPU_FLAGS
495 AcpiOsAcquireLock(ACPI_HANDLE Handle)
496 {
497 
498 
499 	if (Handle == NULL)
500 		return (AE_BAD_PARAMETER);
501 
502 	if (curthread == CPU->cpu_idle_thread) {
503 		while (!mutex_tryenter((kmutex_t *)Handle))
504 			/* spin */;
505 	} else
506 		mutex_enter((kmutex_t *)Handle);
507 	return (AE_OK);
508 }
509 
510 void
511 AcpiOsReleaseLock(ACPI_HANDLE Handle, ACPI_CPU_FLAGS Flags)
512 {
513 	_NOTE(ARGUNUSED(Flags))
514 
515 	mutex_exit((kmutex_t *)Handle);
516 }
517 
518 
519 void *
520 AcpiOsAllocate(ACPI_SIZE Size)
521 {
522 	ACPI_SIZE *tmp_ptr;
523 
524 	Size += sizeof (Size);
525 	tmp_ptr = (ACPI_SIZE *)kmem_zalloc(Size, KM_SLEEP);
526 	*tmp_ptr++ = Size;
527 	return (tmp_ptr);
528 }
529 
530 void
531 AcpiOsFree(void *Memory)
532 {
533 	ACPI_SIZE	size, *tmp_ptr;
534 
535 	tmp_ptr = (ACPI_SIZE *)Memory;
536 	tmp_ptr -= 1;
537 	size = *tmp_ptr;
538 	kmem_free(tmp_ptr, size);
539 }
540 
541 static int napics_found;	/* number of ioapic addresses in array */
542 static ACPI_PHYSICAL_ADDRESS ioapic_paddr[MAX_IO_APIC];
543 static ACPI_TABLE_MADT *acpi_mapic_dtp = NULL;
544 static void *dummy_ioapicadr;
545 
546 void
547 acpica_find_ioapics(void)
548 {
549 	int			madt_seen, madt_size;
550 	ACPI_SUBTABLE_HEADER		*ap;
551 	ACPI_MADT_IO_APIC		*mia;
552 
553 	if (acpi_mapic_dtp != NULL)
554 		return;	/* already parsed table */
555 	if (AcpiGetTable(ACPI_SIG_MADT, 1,
556 	    (ACPI_TABLE_HEADER **) &acpi_mapic_dtp) != AE_OK)
557 		return;
558 
559 	napics_found = 0;
560 
561 	/*
562 	 * Search the MADT for ioapics
563 	 */
564 	ap = (ACPI_SUBTABLE_HEADER *) (acpi_mapic_dtp + 1);
565 	madt_size = acpi_mapic_dtp->Header.Length;
566 	madt_seen = sizeof (*acpi_mapic_dtp);
567 
568 	while (madt_seen < madt_size) {
569 
570 		switch (ap->Type) {
571 		case ACPI_MADT_TYPE_IO_APIC:
572 			mia = (ACPI_MADT_IO_APIC *) ap;
573 			if (napics_found < MAX_IO_APIC) {
574 				ioapic_paddr[napics_found++] =
575 				    (ACPI_PHYSICAL_ADDRESS)
576 				    (mia->Address & PAGEMASK);
577 			}
578 			break;
579 
580 		default:
581 			break;
582 		}
583 
584 		/* advance to next entry */
585 		madt_seen += ap->Length;
586 		ap = (ACPI_SUBTABLE_HEADER *)(((char *)ap) + ap->Length);
587 	}
588 	if (dummy_ioapicadr == NULL)
589 		dummy_ioapicadr = kmem_zalloc(PAGESIZE, KM_SLEEP);
590 }
591 
592 
593 void *
594 AcpiOsMapMemory(ACPI_PHYSICAL_ADDRESS PhysicalAddress, ACPI_SIZE Size)
595 {
596 	int	i;
597 
598 	/*
599 	 * If the iopaic address table is populated, check if trying
600 	 * to access an ioapic.  Instead, return a pointer to a dummy ioapic.
601 	 */
602 	for (i = 0; i < napics_found; i++) {
603 		if ((PhysicalAddress & PAGEMASK) == ioapic_paddr[i])
604 			return (dummy_ioapicadr);
605 	}
606 	/* FUTUREWORK: test PhysicalAddress for > 32 bits */
607 	return (psm_map_new((paddr_t)PhysicalAddress,
608 	    (size_t)Size, PSM_PROT_WRITE | PSM_PROT_READ));
609 }
610 
611 void
612 AcpiOsUnmapMemory(void *LogicalAddress, ACPI_SIZE Size)
613 {
614 	/*
615 	 * Check if trying to unmap dummy ioapic address.
616 	 */
617 	if (LogicalAddress == dummy_ioapicadr)
618 		return;
619 
620 	psm_unmap((caddr_t)LogicalAddress, (size_t)Size);
621 }
622 
623 /*ARGSUSED*/
624 ACPI_STATUS
625 AcpiOsGetPhysicalAddress(void *LogicalAddress,
626 			ACPI_PHYSICAL_ADDRESS *PhysicalAddress)
627 {
628 
629 	/* UNIMPLEMENTED: not invoked by ACPI CA code */
630 	return (AE_NOT_IMPLEMENTED);
631 }
632 
633 
634 ACPI_OSD_HANDLER acpi_isr;
635 void *acpi_isr_context;
636 
637 uint_t
638 acpi_wrapper_isr(char *arg)
639 {
640 	_NOTE(ARGUNUSED(arg))
641 
642 	int	status;
643 
644 	status = (*acpi_isr)(acpi_isr_context);
645 
646 	if (status == ACPI_INTERRUPT_HANDLED) {
647 		return (DDI_INTR_CLAIMED);
648 	} else {
649 		return (DDI_INTR_UNCLAIMED);
650 	}
651 }
652 
653 static int acpi_intr_hooked = 0;
654 
655 ACPI_STATUS
656 AcpiOsInstallInterruptHandler(UINT32 InterruptNumber,
657 		ACPI_OSD_HANDLER ServiceRoutine,
658 		void *Context)
659 {
660 	_NOTE(ARGUNUSED(InterruptNumber))
661 
662 	int retval;
663 	int sci_vect;
664 	iflag_t sci_flags;
665 
666 	acpi_isr = ServiceRoutine;
667 	acpi_isr_context = Context;
668 
669 	/*
670 	 * Get SCI (adjusted for PIC/APIC mode if necessary)
671 	 */
672 	if (acpica_get_sci(&sci_vect, &sci_flags) != AE_OK) {
673 		return (AE_ERROR);
674 	}
675 
676 #ifdef	DEBUG
677 	cmn_err(CE_NOTE, "!acpica: attaching SCI %d", sci_vect);
678 #endif
679 
680 	retval = add_avintr(NULL, SCI_IPL, (avfunc)acpi_wrapper_isr,
681 	    "ACPI SCI", sci_vect, NULL, NULL, NULL, NULL);
682 	if (retval) {
683 		acpi_intr_hooked = 1;
684 		return (AE_OK);
685 	} else
686 		return (AE_BAD_PARAMETER);
687 }
688 
689 ACPI_STATUS
690 AcpiOsRemoveInterruptHandler(UINT32 InterruptNumber,
691 			ACPI_OSD_HANDLER ServiceRoutine)
692 {
693 	_NOTE(ARGUNUSED(ServiceRoutine))
694 
695 #ifdef	DEBUG
696 	cmn_err(CE_NOTE, "!acpica: detaching SCI %d", InterruptNumber);
697 #endif
698 	if (acpi_intr_hooked) {
699 		rem_avintr(NULL, LOCK_LEVEL - 1, (avfunc)acpi_wrapper_isr,
700 		    InterruptNumber);
701 		acpi_intr_hooked = 0;
702 	}
703 	return (AE_OK);
704 }
705 
706 
707 ACPI_THREAD_ID
708 AcpiOsGetThreadId(void)
709 {
710 	/*
711 	 * ACPI CA doesn't care what actual value is returned as long
712 	 * as it is non-zero and unique to each existing thread.
713 	 * ACPI CA assumes that thread ID is castable to a pointer,
714 	 * so we use the current thread pointer.
715 	 */
716 	return (ACPI_CAST_PTHREAD_T((uintptr_t)curthread));
717 }
718 
719 /*
720  *
721  */
722 ACPI_STATUS
723 AcpiOsExecute(ACPI_EXECUTE_TYPE Type, ACPI_OSD_EXEC_CALLBACK  Function,
724     void *Context)
725 {
726 
727 	if (!acpica_eventq_init) {
728 		/*
729 		 * Create taskqs for event handling
730 		 */
731 		if (init_event_queues() != AE_OK)
732 			return (AE_ERROR);
733 	}
734 
735 	if (ddi_taskq_dispatch(osl_eventq[Type], Function, Context,
736 	    DDI_NOSLEEP) == DDI_FAILURE) {
737 #ifdef	DEBUG
738 		cmn_err(CE_WARN, "!acpica: unable to dispatch event");
739 #endif
740 		return (AE_ERROR);
741 	}
742 	return (AE_OK);
743 
744 }
745 
746 void
747 AcpiOsSleep(ACPI_INTEGER Milliseconds)
748 {
749 	/*
750 	 * During kernel startup, before the first tick interrupt
751 	 * has taken place, we can't call delay; very late in
752 	 * kernel shutdown or suspend/resume, clock interrupts
753 	 * are blocked, so delay doesn't work then either.
754 	 * So we busy wait if lbolt == 0 (kernel startup)
755 	 * or if acpica_use_safe_delay has been set to a
756 	 * non-zero value.
757 	 */
758 	if ((ddi_get_lbolt() == 0) || acpica_use_safe_delay)
759 		drv_usecwait(Milliseconds * 1000);
760 	else
761 		delay(drv_usectohz(Milliseconds * 1000));
762 }
763 
764 void
765 AcpiOsStall(UINT32 Microseconds)
766 {
767 	drv_usecwait(Microseconds);
768 }
769 
770 
771 /*
772  * Implementation of "Windows 2001" compatible I/O permission map
773  *
774  */
775 #define	OSL_IO_NONE	(0)
776 #define	OSL_IO_READ	(1<<0)
777 #define	OSL_IO_WRITE	(1<<1)
778 #define	OSL_IO_RW	(OSL_IO_READ | OSL_IO_WRITE)
779 #define	OSL_IO_TERM	(1<<2)
780 #define	OSL_IO_DEFAULT	OSL_IO_RW
781 
782 static struct io_perm  {
783 	ACPI_IO_ADDRESS	low;
784 	ACPI_IO_ADDRESS	high;
785 	uint8_t		perm;
786 } osl_io_perm[] = {
787 	{ 0xcf8, 0xd00, OSL_IO_TERM | OSL_IO_RW}
788 };
789 
790 
791 /*
792  *
793  */
794 static struct io_perm *
795 osl_io_find_perm(ACPI_IO_ADDRESS addr)
796 {
797 	struct io_perm *p;
798 
799 	p = osl_io_perm;
800 	while (p != NULL) {
801 		if ((p->low <= addr) && (addr <= p->high))
802 			break;
803 		p = (p->perm & OSL_IO_TERM) ? NULL : p+1;
804 	}
805 
806 	return (p);
807 }
808 
809 /*
810  *
811  */
812 ACPI_STATUS
813 AcpiOsReadPort(ACPI_IO_ADDRESS Address, UINT32 *Value, UINT32 Width)
814 {
815 	struct io_perm *p;
816 
817 	/* verify permission */
818 	p = osl_io_find_perm(Address);
819 	if (p && (p->perm & OSL_IO_READ) == 0) {
820 		cmn_err(CE_WARN, "!AcpiOsReadPort: %lx %u not permitted",
821 		    (long)Address, Width);
822 		*Value = 0xffffffff;
823 		return (AE_ERROR);
824 	}
825 
826 	switch (Width) {
827 	case 8:
828 		*Value = inb(Address);
829 		break;
830 	case 16:
831 		*Value = inw(Address);
832 		break;
833 	case 32:
834 		*Value = inl(Address);
835 		break;
836 	default:
837 		cmn_err(CE_WARN, "!AcpiOsReadPort: %lx %u failed",
838 		    (long)Address, Width);
839 		return (AE_BAD_PARAMETER);
840 	}
841 	return (AE_OK);
842 }
843 
844 ACPI_STATUS
845 AcpiOsWritePort(ACPI_IO_ADDRESS Address, UINT32 Value, UINT32 Width)
846 {
847 	struct io_perm *p;
848 
849 	/* verify permission */
850 	p = osl_io_find_perm(Address);
851 	if (p && (p->perm & OSL_IO_WRITE) == 0) {
852 		cmn_err(CE_WARN, "!AcpiOsWritePort: %lx %u not permitted",
853 		    (long)Address, Width);
854 		return (AE_ERROR);
855 	}
856 
857 	switch (Width) {
858 	case 8:
859 		outb(Address, Value);
860 		break;
861 	case 16:
862 		outw(Address, Value);
863 		break;
864 	case 32:
865 		outl(Address, Value);
866 		break;
867 	default:
868 		cmn_err(CE_WARN, "!AcpiOsWritePort: %lx %u failed",
869 		    (long)Address, Width);
870 		return (AE_BAD_PARAMETER);
871 	}
872 	return (AE_OK);
873 }
874 
875 
876 /*
877  *
878  */
879 
880 #define	OSL_RW(ptr, val, type, rw) \
881 	{ if (rw) *((type *)(ptr)) = *((type *) val); \
882 	    else *((type *) val) = *((type *)(ptr)); }
883 
884 
885 static void
886 osl_rw_memory(ACPI_PHYSICAL_ADDRESS Address, UINT32 *Value,
887     UINT32 Width, int write)
888 {
889 	size_t	maplen = Width / 8;
890 	caddr_t	ptr;
891 
892 	ptr = psm_map_new((paddr_t)Address, maplen,
893 	    PSM_PROT_WRITE | PSM_PROT_READ);
894 
895 	switch (maplen) {
896 	case 1:
897 		OSL_RW(ptr, Value, uint8_t, write);
898 		break;
899 	case 2:
900 		OSL_RW(ptr, Value, uint16_t, write);
901 		break;
902 	case 4:
903 		OSL_RW(ptr, Value, uint32_t, write);
904 		break;
905 	default:
906 		cmn_err(CE_WARN, "!osl_rw_memory: invalid size %d",
907 		    Width);
908 		break;
909 	}
910 
911 	psm_unmap(ptr, maplen);
912 }
913 
914 ACPI_STATUS
915 AcpiOsReadMemory(ACPI_PHYSICAL_ADDRESS Address,
916 		UINT32 *Value, UINT32 Width)
917 {
918 	osl_rw_memory(Address, Value, Width, 0);
919 	return (AE_OK);
920 }
921 
922 ACPI_STATUS
923 AcpiOsWriteMemory(ACPI_PHYSICAL_ADDRESS Address,
924 		UINT32 Value, UINT32 Width)
925 {
926 	osl_rw_memory(Address, &Value, Width, 1);
927 	return (AE_OK);
928 }
929 
930 
931 ACPI_STATUS
932 AcpiOsReadPciConfiguration(ACPI_PCI_ID *PciId, UINT32 Reg,
933 		UINT64 *Value, UINT32 Width)
934 {
935 
936 	switch (Width) {
937 	case 8:
938 		*Value = (UINT64)(*pci_getb_func)
939 		    (PciId->Bus, PciId->Device, PciId->Function, Reg);
940 		break;
941 	case 16:
942 		*Value = (UINT64)(*pci_getw_func)
943 		    (PciId->Bus, PciId->Device, PciId->Function, Reg);
944 		break;
945 	case 32:
946 		*Value = (UINT64)(*pci_getl_func)
947 		    (PciId->Bus, PciId->Device, PciId->Function, Reg);
948 		break;
949 	case 64:
950 	default:
951 		cmn_err(CE_WARN, "!AcpiOsReadPciConfiguration: %x %u failed",
952 		    Reg, Width);
953 		return (AE_BAD_PARAMETER);
954 	}
955 	return (AE_OK);
956 }
957 
958 /*
959  *
960  */
961 int acpica_write_pci_config_ok = 1;
962 
963 ACPI_STATUS
964 AcpiOsWritePciConfiguration(ACPI_PCI_ID *PciId, UINT32 Reg,
965 		UINT64 Value, UINT32 Width)
966 {
967 
968 	if (!acpica_write_pci_config_ok) {
969 		cmn_err(CE_NOTE, "!write to PCI cfg %x/%x/%x %x"
970 		    " %lx %d not permitted", PciId->Bus, PciId->Device,
971 		    PciId->Function, Reg, (long)Value, Width);
972 		return (AE_OK);
973 	}
974 
975 	switch (Width) {
976 	case 8:
977 		(*pci_putb_func)(PciId->Bus, PciId->Device, PciId->Function,
978 		    Reg, (uint8_t)Value);
979 		break;
980 	case 16:
981 		(*pci_putw_func)(PciId->Bus, PciId->Device, PciId->Function,
982 		    Reg, (uint16_t)Value);
983 		break;
984 	case 32:
985 		(*pci_putl_func)(PciId->Bus, PciId->Device, PciId->Function,
986 		    Reg, (uint32_t)Value);
987 		break;
988 	case 64:
989 	default:
990 		cmn_err(CE_WARN, "!AcpiOsWritePciConfiguration: %x %u failed",
991 		    Reg, Width);
992 		return (AE_BAD_PARAMETER);
993 	}
994 	return (AE_OK);
995 }
996 
997 /*
998  * Called with ACPI_HANDLEs for both a PCI Config Space
999  * OpRegion and (what ACPI CA thinks is) the PCI device
1000  * to which this ConfigSpace OpRegion belongs.
1001  *
1002  * ACPI CA uses _BBN and _ADR objects to determine the default
1003  * values for bus, segment, device and function; anything ACPI CA
1004  * can't figure out from the ACPI tables will be 0.  One very
1005  * old 32-bit x86 system is known to have broken _BBN; this is
1006  * not addressed here.
1007  *
1008  * Some BIOSes implement _BBN() by reading PCI config space
1009  * on bus #0 - which means that we'll recurse when we attempt
1010  * to create the devinfo-to-ACPI map.  If Derive is called during
1011  * scan_d2a_map, we don't translate the bus # and return.
1012  *
1013  * We get the parent of the OpRegion, which must be a PCI
1014  * node, fetch the associated devinfo node and snag the
1015  * b/d/f from it.
1016  */
1017 void
1018 AcpiOsDerivePciId(ACPI_HANDLE rhandle, ACPI_HANDLE chandle,
1019 		ACPI_PCI_ID **PciId)
1020 {
1021 	ACPI_HANDLE handle;
1022 	dev_info_t *dip;
1023 	int bus, device, func, devfn;
1024 
1025 	/*
1026 	 * See above - avoid recursing during scanning_d2a_map.
1027 	 */
1028 	if (scanning_d2a_map)
1029 		return;
1030 
1031 	/*
1032 	 * Get the OpRegion's parent
1033 	 */
1034 	if (AcpiGetParent(chandle, &handle) != AE_OK)
1035 		return;
1036 
1037 	/*
1038 	 * If we've mapped the ACPI node to the devinfo
1039 	 * tree, use the devinfo reg property
1040 	 */
1041 	if (ACPI_SUCCESS(acpica_get_devinfo(handle, &dip)) &&
1042 	    (acpica_get_bdf(dip, &bus, &device, &func) >= 0)) {
1043 		(*PciId)->Bus = bus;
1044 		(*PciId)->Device = device;
1045 		(*PciId)->Function = func;
1046 	}
1047 }
1048 
1049 
1050 /*ARGSUSED*/
1051 BOOLEAN
1052 AcpiOsReadable(void *Pointer, ACPI_SIZE Length)
1053 {
1054 
1055 	/* Always says yes; all mapped memory assumed readable */
1056 	return (1);
1057 }
1058 
1059 /*ARGSUSED*/
1060 BOOLEAN
1061 AcpiOsWritable(void *Pointer, ACPI_SIZE Length)
1062 {
1063 
1064 	/* Always says yes; all mapped memory assumed writable */
1065 	return (1);
1066 }
1067 
1068 UINT64
1069 AcpiOsGetTimer(void)
1070 {
1071 	/* gethrtime() returns 1nS resolution; convert to 100nS granules */
1072 	return ((gethrtime() + 50) / 100);
1073 }
1074 
1075 static struct AcpiOSIFeature_s {
1076 	uint64_t	control_flag;
1077 	const char	*feature_name;
1078 } AcpiOSIFeatures[] = {
1079 	{ ACPI_FEATURE_OSI_MODULE,	"Module Device" },
1080 	{ 0,				"Processor Device" }
1081 };
1082 
1083 /*ARGSUSED*/
1084 ACPI_STATUS
1085 AcpiOsValidateInterface(char *feature)
1086 {
1087 	int i;
1088 
1089 	ASSERT(feature != NULL);
1090 	for (i = 0; i < sizeof (AcpiOSIFeatures) / sizeof (AcpiOSIFeatures[0]);
1091 	    i++) {
1092 		if (strcmp(feature, AcpiOSIFeatures[i].feature_name) != 0) {
1093 			continue;
1094 		}
1095 		/* Check whether required core features are available. */
1096 		if (AcpiOSIFeatures[i].control_flag != 0 &&
1097 		    acpica_get_core_feature(AcpiOSIFeatures[i].control_flag) !=
1098 		    AcpiOSIFeatures[i].control_flag) {
1099 			break;
1100 		}
1101 		/* Feature supported. */
1102 		return (AE_OK);
1103 	}
1104 
1105 	return (AE_SUPPORT);
1106 }
1107 
1108 /*ARGSUSED*/
1109 ACPI_STATUS
1110 AcpiOsValidateAddress(UINT8 spaceid, ACPI_PHYSICAL_ADDRESS addr,
1111     ACPI_SIZE length)
1112 {
1113 	return (AE_OK);
1114 }
1115 
1116 ACPI_STATUS
1117 AcpiOsSignal(UINT32 Function, void *Info)
1118 {
1119 	_NOTE(ARGUNUSED(Function, Info))
1120 
1121 	/* FUTUREWORK: debugger support */
1122 
1123 	cmn_err(CE_NOTE, "!OsSignal unimplemented");
1124 	return (AE_OK);
1125 }
1126 
1127 void ACPI_INTERNAL_VAR_XFACE
1128 AcpiOsPrintf(const char *Format, ...)
1129 {
1130 	va_list ap;
1131 
1132 	va_start(ap, Format);
1133 	AcpiOsVprintf(Format, ap);
1134 	va_end(ap);
1135 }
1136 
1137 /*
1138  * When != 0, sends output to console
1139  * Patchable with kmdb or /etc/system.
1140  */
1141 int acpica_console_out = 0;
1142 
1143 #define	ACPICA_OUTBUF_LEN	160
1144 char	acpica_outbuf[ACPICA_OUTBUF_LEN];
1145 int	acpica_outbuf_offset;
1146 
1147 /*
1148  *
1149  */
1150 static void
1151 acpica_pr_buf(char *buf)
1152 {
1153 	char c, *bufp, *outp;
1154 	int	out_remaining;
1155 
1156 	/*
1157 	 * copy the supplied buffer into the output buffer
1158 	 * when we hit a '\n' or overflow the output buffer,
1159 	 * output and reset the output buffer
1160 	 */
1161 	bufp = buf;
1162 	outp = acpica_outbuf + acpica_outbuf_offset;
1163 	out_remaining = ACPICA_OUTBUF_LEN - acpica_outbuf_offset - 1;
1164 	while (c = *bufp++) {
1165 		*outp++ = c;
1166 		if (c == '\n' || --out_remaining == 0) {
1167 			*outp = '\0';
1168 			switch (acpica_console_out) {
1169 			case 1:
1170 				printf(acpica_outbuf);
1171 				break;
1172 			case 2:
1173 				prom_printf(acpica_outbuf);
1174 				break;
1175 			case 0:
1176 			default:
1177 				(void) strlog(0, 0, 0,
1178 				    SL_CONSOLE | SL_NOTE | SL_LOGONLY,
1179 				    acpica_outbuf);
1180 				break;
1181 			}
1182 			acpica_outbuf_offset = 0;
1183 			outp = acpica_outbuf;
1184 			out_remaining = ACPICA_OUTBUF_LEN - 1;
1185 		}
1186 	}
1187 
1188 	acpica_outbuf_offset = outp - acpica_outbuf;
1189 }
1190 
1191 void
1192 AcpiOsVprintf(const char *Format, va_list Args)
1193 {
1194 
1195 	/*
1196 	 * If AcpiOsInitialize() failed to allocate a string buffer,
1197 	 * resort to vprintf().
1198 	 */
1199 	if (acpi_osl_pr_buffer == NULL) {
1200 		vprintf(Format, Args);
1201 		return;
1202 	}
1203 
1204 	/*
1205 	 * It is possible that a very long debug output statement will
1206 	 * be truncated; this is silently ignored.
1207 	 */
1208 	(void) vsnprintf(acpi_osl_pr_buffer, acpi_osl_pr_buflen, Format, Args);
1209 	acpica_pr_buf(acpi_osl_pr_buffer);
1210 }
1211 
1212 void
1213 AcpiOsRedirectOutput(void *Destination)
1214 {
1215 	_NOTE(ARGUNUSED(Destination))
1216 
1217 	/* FUTUREWORK: debugger support */
1218 
1219 #ifdef	DEBUG
1220 	cmn_err(CE_WARN, "!acpica: AcpiOsRedirectOutput called");
1221 #endif
1222 }
1223 
1224 
1225 UINT32
1226 AcpiOsGetLine(char *Buffer, UINT32 len, UINT32 *BytesRead)
1227 {
1228 	_NOTE(ARGUNUSED(Buffer))
1229 	_NOTE(ARGUNUSED(len))
1230 	_NOTE(ARGUNUSED(BytesRead))
1231 
1232 	/* FUTUREWORK: debugger support */
1233 
1234 	return (0);
1235 }
1236 
1237 /*
1238  * Device tree binding
1239  */
1240 static ACPI_STATUS
1241 acpica_find_pcibus_walker(ACPI_HANDLE hdl, UINT32 lvl, void *ctxp, void **rvpp)
1242 {
1243 	_NOTE(ARGUNUSED(lvl));
1244 
1245 	int sta, hid, bbn;
1246 	int busno = (intptr_t)ctxp;
1247 	ACPI_HANDLE *hdlp = (ACPI_HANDLE *)rvpp;
1248 
1249 	/* Check whether device exists. */
1250 	if (ACPI_SUCCESS(acpica_eval_int(hdl, "_STA", &sta)) &&
1251 	    !(sta & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_FUNCTIONING))) {
1252 		/*
1253 		 * Skip object if device doesn't exist.
1254 		 * According to ACPI Spec,
1255 		 * 1) setting either bit 0 or bit 3 means that device exists.
1256 		 * 2) Absence of _STA method means all status bits set.
1257 		 */
1258 		return (AE_CTRL_DEPTH);
1259 	}
1260 
1261 	if (ACPI_FAILURE(acpica_eval_hid(hdl, "_HID", &hid)) ||
1262 	    (hid != HID_PCI_BUS && hid != HID_PCI_EXPRESS_BUS)) {
1263 		/* Non PCI/PCIe host bridge. */
1264 		return (AE_OK);
1265 	}
1266 
1267 	if (acpi_has_broken_bbn) {
1268 		ACPI_BUFFER rb;
1269 		rb.Pointer = NULL;
1270 		rb.Length = ACPI_ALLOCATE_BUFFER;
1271 
1272 		/* Decree _BBN == n from PCI<n> */
1273 		if (AcpiGetName(hdl, ACPI_SINGLE_NAME, &rb) != AE_OK) {
1274 			return (AE_CTRL_TERMINATE);
1275 		}
1276 		bbn = ((char *)rb.Pointer)[3] - '0';
1277 		AcpiOsFree(rb.Pointer);
1278 		if (bbn == busno || busno == 0) {
1279 			*hdlp = hdl;
1280 			return (AE_CTRL_TERMINATE);
1281 		}
1282 	} else if (ACPI_SUCCESS(acpica_eval_int(hdl, "_BBN", &bbn))) {
1283 		if (bbn == busno) {
1284 			*hdlp = hdl;
1285 			return (AE_CTRL_TERMINATE);
1286 		}
1287 	} else if (busno == 0) {
1288 		*hdlp = hdl;
1289 		return (AE_CTRL_TERMINATE);
1290 	}
1291 
1292 	return (AE_CTRL_DEPTH);
1293 }
1294 
1295 static int
1296 acpica_find_pcibus(int busno, ACPI_HANDLE *rh)
1297 {
1298 	ACPI_HANDLE sbobj, busobj;
1299 
1300 	/* initialize static flag by querying ACPI namespace for bug */
1301 	if (acpi_has_broken_bbn == -1)
1302 		acpi_has_broken_bbn = acpica_query_bbn_problem();
1303 
1304 	if (ACPI_SUCCESS(AcpiGetHandle(NULL, "\\_SB", &sbobj))) {
1305 		busobj = NULL;
1306 		(void) AcpiWalkNamespace(ACPI_TYPE_DEVICE, sbobj, UINT32_MAX,
1307 		    acpica_find_pcibus_walker, NULL, (void *)(intptr_t)busno,
1308 		    (void **)&busobj);
1309 		if (busobj != NULL) {
1310 			*rh = busobj;
1311 			return (AE_OK);
1312 		}
1313 	}
1314 
1315 	return (AE_ERROR);
1316 }
1317 
1318 static ACPI_STATUS
1319 acpica_query_bbn_walker(ACPI_HANDLE hdl, UINT32 lvl, void *ctxp, void **rvpp)
1320 {
1321 	_NOTE(ARGUNUSED(lvl));
1322 	_NOTE(ARGUNUSED(rvpp));
1323 
1324 	int sta, hid, bbn;
1325 	int *cntp = (int *)ctxp;
1326 
1327 	/* Check whether device exists. */
1328 	if (ACPI_SUCCESS(acpica_eval_int(hdl, "_STA", &sta)) &&
1329 	    !(sta & (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_FUNCTIONING))) {
1330 		/*
1331 		 * Skip object if device doesn't exist.
1332 		 * According to ACPI Spec,
1333 		 * 1) setting either bit 0 or bit 3 means that device exists.
1334 		 * 2) Absence of _STA method means all status bits set.
1335 		 */
1336 		return (AE_CTRL_DEPTH);
1337 	}
1338 
1339 	if (ACPI_FAILURE(acpica_eval_hid(hdl, "_HID", &hid)) ||
1340 	    (hid != HID_PCI_BUS && hid != HID_PCI_EXPRESS_BUS)) {
1341 		/* Non PCI/PCIe host bridge. */
1342 		return (AE_OK);
1343 	} else if (ACPI_SUCCESS(acpica_eval_int(hdl, "_BBN", &bbn)) &&
1344 	    bbn == 0 && ++(*cntp) > 1) {
1345 		/*
1346 		 * If we find more than one bus with a 0 _BBN
1347 		 * we have the problem that BigBear's BIOS shows
1348 		 */
1349 		return (AE_CTRL_TERMINATE);
1350 	} else {
1351 		/*
1352 		 * Skip children of PCI/PCIe host bridge.
1353 		 */
1354 		return (AE_CTRL_DEPTH);
1355 	}
1356 }
1357 
1358 /*
1359  * Look for ACPI problem where _BBN is zero for multiple PCI buses
1360  * This is a clear ACPI bug, but we have a workaround in acpica_find_pcibus()
1361  * below if it exists.
1362  */
1363 static int
1364 acpica_query_bbn_problem(void)
1365 {
1366 	ACPI_HANDLE sbobj;
1367 	int zerobbncnt;
1368 	void *rv;
1369 
1370 	zerobbncnt = 0;
1371 	if (ACPI_SUCCESS(AcpiGetHandle(NULL, "\\_SB", &sbobj))) {
1372 		(void) AcpiWalkNamespace(ACPI_TYPE_DEVICE, sbobj, UINT32_MAX,
1373 		    acpica_query_bbn_walker, NULL, &zerobbncnt, &rv);
1374 	}
1375 
1376 	return (zerobbncnt > 1 ? 1 : 0);
1377 }
1378 
1379 static const char hextab[] = "0123456789ABCDEF";
1380 
1381 static int
1382 hexdig(int c)
1383 {
1384 	/*
1385 	 *  Get hex digit:
1386 	 *
1387 	 *  Returns the 4-bit hex digit named by the input character.  Returns
1388 	 *  zero if the input character is not valid hex!
1389 	 */
1390 
1391 	int x = ((c < 'a') || (c > 'z')) ? c : (c - ' ');
1392 	int j = sizeof (hextab);
1393 
1394 	while (--j && (x != hextab[j])) {
1395 	}
1396 	return (j);
1397 }
1398 
1399 static int
1400 CompressEisaID(char *np)
1401 {
1402 	/*
1403 	 *  Compress an EISA device name:
1404 	 *
1405 	 *  This routine converts a 7-byte ASCII device name into the 4-byte
1406 	 *  compressed form used by EISA (50 bytes of ROM to save 1 byte of
1407 	 *  NV-RAM!)
1408 	 */
1409 
1410 	union { char octets[4]; int retval; } myu;
1411 
1412 	myu.octets[0] = ((np[0] & 0x1F) << 2) + ((np[1] >> 3) & 0x03);
1413 	myu.octets[1] = ((np[1] & 0x07) << 5) + (np[2] & 0x1F);
1414 	myu.octets[2] = (hexdig(np[3]) << 4) + hexdig(np[4]);
1415 	myu.octets[3] = (hexdig(np[5]) << 4) + hexdig(np[6]);
1416 
1417 	return (myu.retval);
1418 }
1419 
1420 ACPI_STATUS
1421 acpica_eval_int(ACPI_HANDLE dev, char *method, int *rint)
1422 {
1423 	ACPI_STATUS status;
1424 	ACPI_BUFFER rb;
1425 	ACPI_OBJECT ro;
1426 
1427 	rb.Pointer = &ro;
1428 	rb.Length = sizeof (ro);
1429 	if ((status = AcpiEvaluateObjectTyped(dev, method, NULL, &rb,
1430 	    ACPI_TYPE_INTEGER)) == AE_OK)
1431 		*rint = ro.Integer.Value;
1432 
1433 	return (status);
1434 }
1435 
1436 static int
1437 acpica_eval_hid(ACPI_HANDLE dev, char *method, int *rint)
1438 {
1439 	ACPI_BUFFER rb;
1440 	ACPI_OBJECT *rv;
1441 
1442 	rb.Pointer = NULL;
1443 	rb.Length = ACPI_ALLOCATE_BUFFER;
1444 	if (AcpiEvaluateObject(dev, method, NULL, &rb) == AE_OK &&
1445 	    rb.Length != 0) {
1446 		rv = rb.Pointer;
1447 		if (rv->Type == ACPI_TYPE_INTEGER) {
1448 			*rint = rv->Integer.Value;
1449 			AcpiOsFree(rv);
1450 			return (AE_OK);
1451 		} else if (rv->Type == ACPI_TYPE_STRING) {
1452 			char *stringData;
1453 
1454 			/* Convert the string into an EISA ID */
1455 			if (rv->String.Pointer == NULL) {
1456 				AcpiOsFree(rv);
1457 				return (AE_ERROR);
1458 			}
1459 
1460 			stringData = rv->String.Pointer;
1461 
1462 			/*
1463 			 * If the string is an EisaID, it must be 7
1464 			 * characters; if it's an ACPI ID, it will be 8
1465 			 * (and we don't care about ACPI ids here).
1466 			 */
1467 			if (strlen(stringData) != 7) {
1468 				AcpiOsFree(rv);
1469 				return (AE_ERROR);
1470 			}
1471 
1472 			*rint = CompressEisaID(stringData);
1473 			AcpiOsFree(rv);
1474 			return (AE_OK);
1475 		} else
1476 			AcpiOsFree(rv);
1477 	}
1478 	return (AE_ERROR);
1479 }
1480 
1481 /*
1482  * Create linkage between devinfo nodes and ACPI nodes
1483  */
1484 ACPI_STATUS
1485 acpica_tag_devinfo(dev_info_t *dip, ACPI_HANDLE acpiobj)
1486 {
1487 	ACPI_STATUS status;
1488 	ACPI_BUFFER rb;
1489 
1490 	/*
1491 	 * Tag the devinfo node with the ACPI name
1492 	 */
1493 	rb.Pointer = NULL;
1494 	rb.Length = ACPI_ALLOCATE_BUFFER;
1495 	status = AcpiGetName(acpiobj, ACPI_FULL_PATHNAME, &rb);
1496 	if (ACPI_FAILURE(status)) {
1497 		cmn_err(CE_WARN, "acpica: could not get ACPI path!");
1498 	} else {
1499 		(void) ndi_prop_update_string(DDI_DEV_T_NONE, dip,
1500 		    "acpi-namespace", (char *)rb.Pointer);
1501 		AcpiOsFree(rb.Pointer);
1502 
1503 		/*
1504 		 * Tag the ACPI node with the dip
1505 		 */
1506 		status = acpica_set_devinfo(acpiobj, dip);
1507 		ASSERT(ACPI_SUCCESS(status));
1508 	}
1509 
1510 	return (status);
1511 }
1512 
1513 /*
1514  * Destroy linkage between devinfo nodes and ACPI nodes
1515  */
1516 ACPI_STATUS
1517 acpica_untag_devinfo(dev_info_t *dip, ACPI_HANDLE acpiobj)
1518 {
1519 	(void) acpica_unset_devinfo(acpiobj);
1520 	(void) ndi_prop_remove(DDI_DEV_T_NONE, dip, "acpi-namespace");
1521 
1522 	return (AE_OK);
1523 }
1524 
1525 /*
1526  * Return the ACPI device node matching the CPU dev_info node.
1527  */
1528 ACPI_STATUS
1529 acpica_get_handle_cpu(int cpu_id, ACPI_HANDLE *rh)
1530 {
1531 	int i;
1532 
1533 	/*
1534 	 * if cpu_map itself is NULL, we're a uppc system and
1535 	 * acpica_build_processor_map() hasn't been called yet.
1536 	 * So call it here
1537 	 */
1538 	if (cpu_map == NULL) {
1539 		(void) acpica_build_processor_map();
1540 		if (cpu_map == NULL)
1541 			return (AE_ERROR);
1542 	}
1543 
1544 	if (cpu_id < 0) {
1545 		return (AE_ERROR);
1546 	}
1547 
1548 	/*
1549 	 * search object with cpuid in cpu_map
1550 	 */
1551 	mutex_enter(&cpu_map_lock);
1552 	for (i = 0; i < cpu_map_count; i++) {
1553 		if (cpu_map[i]->cpu_id == cpu_id) {
1554 			break;
1555 		}
1556 	}
1557 	if (i < cpu_map_count && (cpu_map[i]->obj != NULL)) {
1558 		*rh = cpu_map[i]->obj;
1559 		mutex_exit(&cpu_map_lock);
1560 		return (AE_OK);
1561 	}
1562 
1563 	/* Handle special case for uppc-only systems. */
1564 	if (cpu_map_called == 0) {
1565 		uint32_t apicid = cpuid_get_apicid(CPU);
1566 		if (apicid != UINT32_MAX) {
1567 			for (i = 0; i < cpu_map_count; i++) {
1568 				if (cpu_map[i]->apic_id == apicid) {
1569 					break;
1570 				}
1571 			}
1572 			if (i < cpu_map_count && (cpu_map[i]->obj != NULL)) {
1573 				*rh = cpu_map[i]->obj;
1574 				mutex_exit(&cpu_map_lock);
1575 				return (AE_OK);
1576 			}
1577 		}
1578 	}
1579 	mutex_exit(&cpu_map_lock);
1580 
1581 	return (AE_ERROR);
1582 }
1583 
1584 /*
1585  * Determine if this object is a processor
1586  */
1587 static ACPI_STATUS
1588 acpica_probe_processor(ACPI_HANDLE obj, UINT32 level, void *ctx, void **rv)
1589 {
1590 	ACPI_STATUS status;
1591 	ACPI_OBJECT_TYPE objtype;
1592 	unsigned long acpi_id;
1593 	ACPI_BUFFER rb;
1594 	ACPI_DEVICE_INFO *di;
1595 
1596 	if (AcpiGetType(obj, &objtype) != AE_OK)
1597 		return (AE_OK);
1598 
1599 	if (objtype == ACPI_TYPE_PROCESSOR) {
1600 		/* process a Processor */
1601 		rb.Pointer = NULL;
1602 		rb.Length = ACPI_ALLOCATE_BUFFER;
1603 		status = AcpiEvaluateObjectTyped(obj, NULL, NULL, &rb,
1604 		    ACPI_TYPE_PROCESSOR);
1605 		if (status != AE_OK) {
1606 			cmn_err(CE_WARN, "!acpica: error probing Processor");
1607 			return (status);
1608 		}
1609 		acpi_id = ((ACPI_OBJECT *)rb.Pointer)->Processor.ProcId;
1610 		AcpiOsFree(rb.Pointer);
1611 	} else if (objtype == ACPI_TYPE_DEVICE) {
1612 		/* process a processor Device */
1613 		status = AcpiGetObjectInfo(obj, &di);
1614 		if (status != AE_OK) {
1615 			cmn_err(CE_WARN,
1616 			    "!acpica: error probing Processor Device\n");
1617 			return (status);
1618 		}
1619 
1620 		if (!(di->Valid & ACPI_VALID_UID) ||
1621 		    ddi_strtoul(di->UniqueId.String, NULL, 10, &acpi_id) != 0) {
1622 			ACPI_FREE(di);
1623 			cmn_err(CE_WARN,
1624 			    "!acpica: error probing Processor Device _UID\n");
1625 			return (AE_ERROR);
1626 		}
1627 		ACPI_FREE(di);
1628 	}
1629 	(void) acpica_add_processor_to_map(acpi_id, obj, UINT32_MAX);
1630 
1631 	return (AE_OK);
1632 }
1633 
1634 void
1635 scan_d2a_map(void)
1636 {
1637 	dev_info_t *dip, *cdip;
1638 	ACPI_HANDLE acpiobj;
1639 	char *device_type_prop;
1640 	int bus;
1641 	static int map_error = 0;
1642 
1643 	if (map_error || (d2a_done != 0))
1644 		return;
1645 
1646 	scanning_d2a_map = 1;
1647 
1648 	/*
1649 	 * Find all child-of-root PCI buses, and find their corresponding
1650 	 * ACPI child-of-root PCI nodes.  For each one, add to the
1651 	 * d2a table.
1652 	 */
1653 
1654 	for (dip = ddi_get_child(ddi_root_node());
1655 	    dip != NULL;
1656 	    dip = ddi_get_next_sibling(dip)) {
1657 
1658 		/* prune non-PCI nodes */
1659 		if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip,
1660 		    DDI_PROP_DONTPASS,
1661 		    "device_type", &device_type_prop) != DDI_PROP_SUCCESS)
1662 			continue;
1663 
1664 		if ((strcmp("pci", device_type_prop) != 0) &&
1665 		    (strcmp("pciex", device_type_prop) != 0)) {
1666 			ddi_prop_free(device_type_prop);
1667 			continue;
1668 		}
1669 
1670 		ddi_prop_free(device_type_prop);
1671 
1672 		/*
1673 		 * To get bus number of dip, get first child and get its
1674 		 * bus number.  If NULL, just continue, because we don't
1675 		 * care about bus nodes with no children anyway.
1676 		 */
1677 		if ((cdip = ddi_get_child(dip)) == NULL)
1678 			continue;
1679 
1680 		if (acpica_get_bdf(cdip, &bus, NULL, NULL) < 0) {
1681 #ifdef D2ADEBUG
1682 			cmn_err(CE_WARN, "Can't get bus number of PCI child?");
1683 #endif
1684 			map_error = 1;
1685 			scanning_d2a_map = 0;
1686 			d2a_done = 1;
1687 			return;
1688 		}
1689 
1690 		if (acpica_find_pcibus(bus, &acpiobj) == AE_ERROR) {
1691 #ifdef D2ADEBUG
1692 			cmn_err(CE_WARN, "No ACPI bus obj for bus %d?\n", bus);
1693 #endif
1694 			map_error = 1;
1695 			continue;
1696 		}
1697 
1698 		acpica_tag_devinfo(dip, acpiobj);
1699 
1700 		/* call recursively to enumerate subtrees */
1701 		scan_d2a_subtree(dip, acpiobj, bus);
1702 	}
1703 
1704 	scanning_d2a_map = 0;
1705 	d2a_done = 1;
1706 }
1707 
1708 /*
1709  * For all acpi child devices of acpiobj, find their matching
1710  * dip under "dip" argument.  (matching means "matches dev/fn").
1711  * bus is assumed to already be a match from caller, and is
1712  * used here only to record in the d2a entry.  Recurse if necessary.
1713  */
1714 static void
1715 scan_d2a_subtree(dev_info_t *dip, ACPI_HANDLE acpiobj, int bus)
1716 {
1717 	int acpi_devfn, hid;
1718 	ACPI_HANDLE acld;
1719 	dev_info_t *dcld;
1720 	int dcld_b, dcld_d, dcld_f;
1721 	int dev, func;
1722 	char *device_type_prop;
1723 
1724 	acld = NULL;
1725 	while (AcpiGetNextObject(ACPI_TYPE_DEVICE, acpiobj, acld, &acld)
1726 	    == AE_OK) {
1727 		/* get the dev/func we're looking for in the devinfo tree */
1728 		if (acpica_eval_int(acld, "_ADR", &acpi_devfn) != AE_OK)
1729 			continue;
1730 		dev = (acpi_devfn >> 16) & 0xFFFF;
1731 		func = acpi_devfn & 0xFFFF;
1732 
1733 		/* look through all the immediate children of dip */
1734 		for (dcld = ddi_get_child(dip); dcld != NULL;
1735 		    dcld = ddi_get_next_sibling(dcld)) {
1736 			if (acpica_get_bdf(dcld, &dcld_b, &dcld_d, &dcld_f) < 0)
1737 				continue;
1738 
1739 			/* dev must match; function must match or wildcard */
1740 			if (dcld_d != dev ||
1741 			    (func != 0xFFFF && func != dcld_f))
1742 				continue;
1743 			bus = dcld_b;
1744 
1745 			/* found a match, record it */
1746 			acpica_tag_devinfo(dcld, acld);
1747 
1748 			/* if we find a bridge, recurse from here */
1749 			if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dcld,
1750 			    DDI_PROP_DONTPASS, "device_type",
1751 			    &device_type_prop) == DDI_PROP_SUCCESS) {
1752 				if ((strcmp("pci", device_type_prop) == 0) ||
1753 				    (strcmp("pciex", device_type_prop) == 0))
1754 					scan_d2a_subtree(dcld, acld, bus);
1755 				ddi_prop_free(device_type_prop);
1756 			}
1757 
1758 			/* done finding a match, so break now */
1759 			break;
1760 		}
1761 	}
1762 }
1763 
1764 /*
1765  * Return bus/dev/fn for PCI dip (note: not the parent "pci" node).
1766  */
1767 int
1768 acpica_get_bdf(dev_info_t *dip, int *bus, int *device, int *func)
1769 {
1770 	pci_regspec_t *pci_rp;
1771 	int len;
1772 
1773 	if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
1774 	    "reg", (int **)&pci_rp, (uint_t *)&len) != DDI_SUCCESS)
1775 		return (-1);
1776 
1777 	if (len < (sizeof (pci_regspec_t) / sizeof (int))) {
1778 		ddi_prop_free(pci_rp);
1779 		return (-1);
1780 	}
1781 	if (bus != NULL)
1782 		*bus = (int)PCI_REG_BUS_G(pci_rp->pci_phys_hi);
1783 	if (device != NULL)
1784 		*device = (int)PCI_REG_DEV_G(pci_rp->pci_phys_hi);
1785 	if (func != NULL)
1786 		*func = (int)PCI_REG_FUNC_G(pci_rp->pci_phys_hi);
1787 	ddi_prop_free(pci_rp);
1788 	return (0);
1789 }
1790 
1791 /*
1792  * Return the ACPI device node matching this dev_info node, if it
1793  * exists in the ACPI tree.
1794  */
1795 ACPI_STATUS
1796 acpica_get_handle(dev_info_t *dip, ACPI_HANDLE *rh)
1797 {
1798 	ACPI_STATUS status;
1799 	char *acpiname;
1800 
1801 #ifdef	DEBUG
1802 	if (d2a_done == 0)
1803 		cmn_err(CE_WARN, "!acpica_get_handle:"
1804 		    " no ACPI mapping for %s", ddi_node_name(dip));
1805 #endif
1806 
1807 	if (ddi_prop_lookup_string(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
1808 	    "acpi-namespace", &acpiname) != DDI_PROP_SUCCESS) {
1809 		return (AE_ERROR);
1810 	}
1811 
1812 	status = AcpiGetHandle(NULL, acpiname, rh);
1813 	ddi_prop_free((void *)acpiname);
1814 	return (status);
1815 }
1816 
1817 
1818 
1819 /*
1820  * Manage OS data attachment to ACPI nodes
1821  */
1822 
1823 /*
1824  * Return the (dev_info_t *) associated with the ACPI node.
1825  */
1826 ACPI_STATUS
1827 acpica_get_devinfo(ACPI_HANDLE obj, dev_info_t **dipp)
1828 {
1829 	ACPI_STATUS status;
1830 	void *ptr;
1831 
1832 	status = AcpiGetData(obj, acpica_devinfo_handler, &ptr);
1833 	if (status == AE_OK)
1834 		*dipp = (dev_info_t *)ptr;
1835 
1836 	return (status);
1837 }
1838 
1839 /*
1840  * Set the dev_info_t associated with the ACPI node.
1841  */
1842 static ACPI_STATUS
1843 acpica_set_devinfo(ACPI_HANDLE obj, dev_info_t *dip)
1844 {
1845 	ACPI_STATUS status;
1846 
1847 	status = AcpiAttachData(obj, acpica_devinfo_handler, (void *)dip);
1848 	return (status);
1849 }
1850 
1851 /*
1852  * Unset the dev_info_t associated with the ACPI node.
1853  */
1854 static ACPI_STATUS
1855 acpica_unset_devinfo(ACPI_HANDLE obj)
1856 {
1857 	return (AcpiDetachData(obj, acpica_devinfo_handler));
1858 }
1859 
1860 /*
1861  *
1862  */
1863 void
1864 acpica_devinfo_handler(ACPI_HANDLE obj, void *data)
1865 {
1866 	/* no-op */
1867 }
1868 
1869 ACPI_STATUS
1870 acpica_build_processor_map(void)
1871 {
1872 	ACPI_STATUS status;
1873 	void *rv;
1874 
1875 	/*
1876 	 * shouldn't be called more than once anyway
1877 	 */
1878 	if (cpu_map_built)
1879 		return (AE_OK);
1880 
1881 	/*
1882 	 * ACPI device configuration driver has built mapping information
1883 	 * among processor id and object handle, no need to probe again.
1884 	 */
1885 	if (acpica_get_devcfg_feature(ACPI_DEVCFG_CPU)) {
1886 		cpu_map_built = 1;
1887 		return (AE_OK);
1888 	}
1889 
1890 	/*
1891 	 * Look for Processor objects
1892 	 */
1893 	status = AcpiWalkNamespace(ACPI_TYPE_PROCESSOR,
1894 	    ACPI_ROOT_OBJECT,
1895 	    4,
1896 	    acpica_probe_processor,
1897 	    NULL,
1898 	    NULL,
1899 	    &rv);
1900 	ASSERT(status == AE_OK);
1901 
1902 	/*
1903 	 * Look for processor Device objects
1904 	 */
1905 	status = AcpiGetDevices("ACPI0007",
1906 	    acpica_probe_processor,
1907 	    NULL,
1908 	    &rv);
1909 	ASSERT(status == AE_OK);
1910 	cpu_map_built = 1;
1911 
1912 	return (status);
1913 }
1914 
1915 /*
1916  * Grow cpu map table on demand.
1917  */
1918 static void
1919 acpica_grow_cpu_map(void)
1920 {
1921 	if (cpu_map_count == cpu_map_count_max) {
1922 		size_t sz;
1923 		struct cpu_map_item **new_map;
1924 
1925 		ASSERT(cpu_map_count_max < INT_MAX / 2);
1926 		cpu_map_count_max += max_ncpus;
1927 		new_map = kmem_zalloc(sizeof (cpu_map[0]) * cpu_map_count_max,
1928 		    KM_SLEEP);
1929 		if (cpu_map_count != 0) {
1930 			ASSERT(cpu_map != NULL);
1931 			sz = sizeof (cpu_map[0]) * cpu_map_count;
1932 			kcopy(cpu_map, new_map, sz);
1933 			kmem_free(cpu_map, sz);
1934 		}
1935 		cpu_map = new_map;
1936 	}
1937 }
1938 
1939 /*
1940  * Maintain mapping information among (cpu id, ACPI processor id, APIC id,
1941  * ACPI handle). The mapping table will be setup in two steps:
1942  * 1) acpica_add_processor_to_map() builds mapping among APIC id, ACPI
1943  *    processor id and ACPI object handle.
1944  * 2) acpica_map_cpu() builds mapping among cpu id and ACPI processor id.
1945  * On systems with which have ACPI device configuration for CPUs enabled,
1946  * acpica_map_cpu() will be called after acpica_add_processor_to_map(),
1947  * otherwise acpica_map_cpu() will be called before
1948  * acpica_add_processor_to_map().
1949  */
1950 ACPI_STATUS
1951 acpica_add_processor_to_map(UINT32 acpi_id, ACPI_HANDLE obj, UINT32 apic_id)
1952 {
1953 	int i;
1954 	ACPI_STATUS rc = AE_OK;
1955 	struct cpu_map_item *item = NULL;
1956 
1957 	ASSERT(obj != NULL);
1958 	if (obj == NULL) {
1959 		return (AE_ERROR);
1960 	}
1961 
1962 	mutex_enter(&cpu_map_lock);
1963 
1964 	/*
1965 	 * Special case for uppc
1966 	 * If we're a uppc system and ACPI device configuration for CPU has
1967 	 * been disabled, there won't be a CPU map yet because uppc psm doesn't
1968 	 * call acpica_map_cpu(). So create one and use the passed-in processor
1969 	 * as CPU 0
1970 	 * Assumption: the first CPU returned by
1971 	 * AcpiGetDevices/AcpiWalkNamespace will be the BSP.
1972 	 * Unfortunately there appears to be no good way to ASSERT this.
1973 	 */
1974 	if (cpu_map == NULL &&
1975 	    !acpica_get_devcfg_feature(ACPI_DEVCFG_CPU)) {
1976 		acpica_grow_cpu_map();
1977 		ASSERT(cpu_map != NULL);
1978 		item = kmem_zalloc(sizeof (*item), KM_SLEEP);
1979 		item->cpu_id = 0;
1980 		item->proc_id = acpi_id;
1981 		item->apic_id = apic_id;
1982 		item->obj = obj;
1983 		cpu_map[0] = item;
1984 		cpu_map_count = 1;
1985 		mutex_exit(&cpu_map_lock);
1986 		return (AE_OK);
1987 	}
1988 
1989 	for (i = 0; i < cpu_map_count; i++) {
1990 		if (cpu_map[i]->obj == obj) {
1991 			rc = AE_ALREADY_EXISTS;
1992 			break;
1993 		} else if (cpu_map[i]->proc_id == acpi_id) {
1994 			ASSERT(item == NULL);
1995 			item = cpu_map[i];
1996 		}
1997 	}
1998 
1999 	if (rc == AE_OK) {
2000 		if (item != NULL) {
2001 			/*
2002 			 * ACPI alias objects may cause more than one objects
2003 			 * with the same ACPI processor id, only remember the
2004 			 * the first object encountered.
2005 			 */
2006 			if (item->obj == NULL) {
2007 				item->obj = obj;
2008 				item->apic_id = apic_id;
2009 			} else {
2010 				rc = AE_ALREADY_EXISTS;
2011 			}
2012 		} else if (cpu_map_count >= INT_MAX / 2) {
2013 			rc = AE_NO_MEMORY;
2014 		} else {
2015 			acpica_grow_cpu_map();
2016 			ASSERT(cpu_map != NULL);
2017 			ASSERT(cpu_map_count < cpu_map_count_max);
2018 			item = kmem_zalloc(sizeof (*item), KM_SLEEP);
2019 			item->cpu_id = -1;
2020 			item->proc_id = acpi_id;
2021 			item->apic_id = apic_id;
2022 			item->obj = obj;
2023 			cpu_map[cpu_map_count] = item;
2024 			cpu_map_count++;
2025 		}
2026 	}
2027 
2028 	mutex_exit(&cpu_map_lock);
2029 
2030 	return (rc);
2031 }
2032 
2033 ACPI_STATUS
2034 acpica_remove_processor_from_map(UINT32 acpi_id)
2035 {
2036 	int i;
2037 	ACPI_STATUS rc = AE_NOT_EXIST;
2038 
2039 	mutex_enter(&cpu_map_lock);
2040 	for (i = 0; i < cpu_map_count; i++) {
2041 		if (cpu_map[i]->proc_id != acpi_id) {
2042 			continue;
2043 		}
2044 		cpu_map[i]->obj = NULL;
2045 		/* Free item if no more reference to it. */
2046 		if (cpu_map[i]->cpu_id == -1) {
2047 			kmem_free(cpu_map[i], sizeof (struct cpu_map_item));
2048 			cpu_map[i] = NULL;
2049 			cpu_map_count--;
2050 			if (i != cpu_map_count) {
2051 				cpu_map[i] = cpu_map[cpu_map_count];
2052 				cpu_map[cpu_map_count] = NULL;
2053 			}
2054 		}
2055 		rc = AE_OK;
2056 		break;
2057 	}
2058 	mutex_exit(&cpu_map_lock);
2059 
2060 	return (rc);
2061 }
2062 
2063 ACPI_STATUS
2064 acpica_map_cpu(processorid_t cpuid, UINT32 acpi_id)
2065 {
2066 	int i;
2067 	ACPI_STATUS rc = AE_OK;
2068 	struct cpu_map_item *item = NULL;
2069 
2070 	ASSERT(cpuid != -1);
2071 	if (cpuid == -1) {
2072 		return (AE_ERROR);
2073 	}
2074 
2075 	mutex_enter(&cpu_map_lock);
2076 	cpu_map_called = 1;
2077 	for (i = 0; i < cpu_map_count; i++) {
2078 		if (cpu_map[i]->cpu_id == cpuid) {
2079 			rc = AE_ALREADY_EXISTS;
2080 			break;
2081 		} else if (cpu_map[i]->proc_id == acpi_id) {
2082 			ASSERT(item == NULL);
2083 			item = cpu_map[i];
2084 		}
2085 	}
2086 	if (rc == AE_OK) {
2087 		if (item != NULL) {
2088 			if (item->cpu_id == -1) {
2089 				item->cpu_id = cpuid;
2090 			} else {
2091 				rc = AE_ALREADY_EXISTS;
2092 			}
2093 		} else if (cpu_map_count >= INT_MAX / 2) {
2094 			rc = AE_NO_MEMORY;
2095 		} else {
2096 			acpica_grow_cpu_map();
2097 			ASSERT(cpu_map != NULL);
2098 			ASSERT(cpu_map_count < cpu_map_count_max);
2099 			item = kmem_zalloc(sizeof (*item), KM_SLEEP);
2100 			item->cpu_id = cpuid;
2101 			item->proc_id = acpi_id;
2102 			item->apic_id = UINT32_MAX;
2103 			item->obj = NULL;
2104 			cpu_map[cpu_map_count] = item;
2105 			cpu_map_count++;
2106 		}
2107 	}
2108 	mutex_exit(&cpu_map_lock);
2109 
2110 	return (rc);
2111 }
2112 
2113 ACPI_STATUS
2114 acpica_unmap_cpu(processorid_t cpuid)
2115 {
2116 	int i;
2117 	ACPI_STATUS rc = AE_NOT_EXIST;
2118 
2119 	ASSERT(cpuid != -1);
2120 	if (cpuid == -1) {
2121 		return (rc);
2122 	}
2123 
2124 	mutex_enter(&cpu_map_lock);
2125 	for (i = 0; i < cpu_map_count; i++) {
2126 		if (cpu_map[i]->cpu_id != cpuid) {
2127 			continue;
2128 		}
2129 		cpu_map[i]->cpu_id = -1;
2130 		/* Free item if no more reference. */
2131 		if (cpu_map[i]->obj == NULL) {
2132 			kmem_free(cpu_map[i], sizeof (struct cpu_map_item));
2133 			cpu_map[i] = NULL;
2134 			cpu_map_count--;
2135 			if (i != cpu_map_count) {
2136 				cpu_map[i] = cpu_map[cpu_map_count];
2137 				cpu_map[cpu_map_count] = NULL;
2138 			}
2139 		}
2140 		rc = AE_OK;
2141 		break;
2142 	}
2143 	mutex_exit(&cpu_map_lock);
2144 
2145 	return (rc);
2146 }
2147 
2148 ACPI_STATUS
2149 acpica_get_cpu_object_by_cpuid(processorid_t cpuid, ACPI_HANDLE *hdlp)
2150 {
2151 	int i;
2152 	ACPI_STATUS rc = AE_NOT_EXIST;
2153 
2154 	ASSERT(cpuid != -1);
2155 	if (cpuid == -1) {
2156 		return (rc);
2157 	}
2158 
2159 	mutex_enter(&cpu_map_lock);
2160 	for (i = 0; i < cpu_map_count; i++) {
2161 		if (cpu_map[i]->cpu_id == cpuid && cpu_map[i]->obj != NULL) {
2162 			*hdlp = cpu_map[i]->obj;
2163 			rc = AE_OK;
2164 			break;
2165 		}
2166 	}
2167 	mutex_exit(&cpu_map_lock);
2168 
2169 	return (rc);
2170 }
2171 
2172 ACPI_STATUS
2173 acpica_get_cpu_object_by_procid(UINT32 procid, ACPI_HANDLE *hdlp)
2174 {
2175 	int i;
2176 	ACPI_STATUS rc = AE_NOT_EXIST;
2177 
2178 	mutex_enter(&cpu_map_lock);
2179 	for (i = 0; i < cpu_map_count; i++) {
2180 		if (cpu_map[i]->proc_id == procid && cpu_map[i]->obj != NULL) {
2181 			*hdlp = cpu_map[i]->obj;
2182 			rc = AE_OK;
2183 			break;
2184 		}
2185 	}
2186 	mutex_exit(&cpu_map_lock);
2187 
2188 	return (rc);
2189 }
2190 
2191 ACPI_STATUS
2192 acpica_get_cpu_object_by_apicid(UINT32 apicid, ACPI_HANDLE *hdlp)
2193 {
2194 	int i;
2195 	ACPI_STATUS rc = AE_NOT_EXIST;
2196 
2197 	ASSERT(apicid != UINT32_MAX);
2198 	if (apicid == UINT32_MAX) {
2199 		return (rc);
2200 	}
2201 
2202 	mutex_enter(&cpu_map_lock);
2203 	for (i = 0; i < cpu_map_count; i++) {
2204 		if (cpu_map[i]->apic_id == apicid && cpu_map[i]->obj != NULL) {
2205 			*hdlp = cpu_map[i]->obj;
2206 			rc = AE_OK;
2207 			break;
2208 		}
2209 	}
2210 	mutex_exit(&cpu_map_lock);
2211 
2212 	return (rc);
2213 }
2214 
2215 ACPI_STATUS
2216 acpica_get_cpu_id_by_object(ACPI_HANDLE hdl, processorid_t *cpuidp)
2217 {
2218 	int i;
2219 	ACPI_STATUS rc = AE_NOT_EXIST;
2220 
2221 	ASSERT(cpuidp != NULL);
2222 	if (hdl == NULL || cpuidp == NULL) {
2223 		return (rc);
2224 	}
2225 
2226 	*cpuidp = -1;
2227 	mutex_enter(&cpu_map_lock);
2228 	for (i = 0; i < cpu_map_count; i++) {
2229 		if (cpu_map[i]->obj == hdl && cpu_map[i]->cpu_id != -1) {
2230 			*cpuidp = cpu_map[i]->cpu_id;
2231 			rc = AE_OK;
2232 			break;
2233 		}
2234 	}
2235 	mutex_exit(&cpu_map_lock);
2236 
2237 	return (rc);
2238 }
2239 
2240 ACPI_STATUS
2241 acpica_get_apicid_by_object(ACPI_HANDLE hdl, UINT32 *rp)
2242 {
2243 	int i;
2244 	ACPI_STATUS rc = AE_NOT_EXIST;
2245 
2246 	ASSERT(rp != NULL);
2247 	if (hdl == NULL || rp == NULL) {
2248 		return (rc);
2249 	}
2250 
2251 	*rp = UINT32_MAX;
2252 	mutex_enter(&cpu_map_lock);
2253 	for (i = 0; i < cpu_map_count; i++) {
2254 		if (cpu_map[i]->obj == hdl &&
2255 		    cpu_map[i]->apic_id != UINT32_MAX) {
2256 			*rp = cpu_map[i]->apic_id;
2257 			rc = AE_OK;
2258 			break;
2259 		}
2260 	}
2261 	mutex_exit(&cpu_map_lock);
2262 
2263 	return (rc);
2264 }
2265 
2266 ACPI_STATUS
2267 acpica_get_procid_by_object(ACPI_HANDLE hdl, UINT32 *rp)
2268 {
2269 	int i;
2270 	ACPI_STATUS rc = AE_NOT_EXIST;
2271 
2272 	ASSERT(rp != NULL);
2273 	if (hdl == NULL || rp == NULL) {
2274 		return (rc);
2275 	}
2276 
2277 	*rp = UINT32_MAX;
2278 	mutex_enter(&cpu_map_lock);
2279 	for (i = 0; i < cpu_map_count; i++) {
2280 		if (cpu_map[i]->obj == hdl) {
2281 			*rp = cpu_map[i]->proc_id;
2282 			rc = AE_OK;
2283 			break;
2284 		}
2285 	}
2286 	mutex_exit(&cpu_map_lock);
2287 
2288 	return (rc);
2289 }
2290 
2291 void
2292 acpica_set_core_feature(uint64_t features)
2293 {
2294 	atomic_or_64(&acpica_core_features, features);
2295 }
2296 
2297 void
2298 acpica_clear_core_feature(uint64_t features)
2299 {
2300 	atomic_and_64(&acpica_core_features, ~features);
2301 }
2302 
2303 uint64_t
2304 acpica_get_core_feature(uint64_t features)
2305 {
2306 	return (acpica_core_features & features);
2307 }
2308 
2309 void
2310 acpica_set_devcfg_feature(uint64_t features)
2311 {
2312 	atomic_or_64(&acpica_devcfg_features, features);
2313 }
2314 
2315 void
2316 acpica_clear_devcfg_feature(uint64_t features)
2317 {
2318 	atomic_and_64(&acpica_devcfg_features, ~features);
2319 }
2320 
2321 uint64_t
2322 acpica_get_devcfg_feature(uint64_t features)
2323 {
2324 	return (acpica_devcfg_features & features);
2325 }
2326 
2327 void
2328 acpica_get_global_FADT(ACPI_TABLE_FADT **gbl_FADT)
2329 {
2330 	*gbl_FADT = &AcpiGbl_FADT;
2331 }
2332 
2333 void
2334 acpica_write_cpupm_capabilities(boolean_t pstates, boolean_t cstates)
2335 {
2336 	if (pstates && AcpiGbl_FADT.PstateControl != 0)
2337 		(void) AcpiHwRegisterWrite(ACPI_REGISTER_SMI_COMMAND_BLOCK,
2338 		    AcpiGbl_FADT.PstateControl);
2339 
2340 	if (cstates && AcpiGbl_FADT.CstControl != 0)
2341 		(void) AcpiHwRegisterWrite(ACPI_REGISTER_SMI_COMMAND_BLOCK,
2342 		    AcpiGbl_FADT.CstControl);
2343 }
2344