1 /* $NetBSD: acpi.c,v 1.298 2022/05/31 20:28:57 mrg Exp $ */
2
3 /*-
4 * Copyright (c) 2003, 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum of By Noon Software, Inc.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 2003 Wasabi Systems, Inc.
34 * All rights reserved.
35 *
36 * Written by Frank van der Linden for Wasabi Systems, Inc.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. All advertising materials mentioning features or use of this software
47 * must display the following acknowledgement:
48 * This product includes software developed for the NetBSD Project by
49 * Wasabi Systems, Inc.
50 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
51 * or promote products derived from this software without specific prior
52 * written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
56 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
57 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
58 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
59 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
60 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
61 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
62 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
63 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
64 * POSSIBILITY OF SUCH DAMAGE.
65 */
66
67 /*
68 * Copyright 2001, 2003 Wasabi Systems, Inc.
69 * All rights reserved.
70 *
71 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
72 *
73 * Redistribution and use in source and binary forms, with or without
74 * modification, are permitted provided that the following conditions
75 * are met:
76 * 1. Redistributions of source code must retain the above copyright
77 * notice, this list of conditions and the following disclaimer.
78 * 2. Redistributions in binary form must reproduce the above copyright
79 * notice, this list of conditions and the following disclaimer in the
80 * documentation and/or other materials provided with the distribution.
81 * 3. All advertising materials mentioning features or use of this software
82 * must display the following acknowledgement:
83 * This product includes software developed for the NetBSD Project by
84 * Wasabi Systems, Inc.
85 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
86 * or promote products derived from this software without specific prior
87 * written permission.
88 *
89 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
90 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
91 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
92 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
93 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
94 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
95 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
96 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
97 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
98 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
99 * POSSIBILITY OF SUCH DAMAGE.
100 */
101
102 #include <sys/cdefs.h>
103 __KERNEL_RCSID(0, "$NetBSD: acpi.c,v 1.298 2022/05/31 20:28:57 mrg Exp $");
104
105 #include "pci.h"
106 #include "opt_acpi.h"
107 #include "opt_pcifixup.h"
108
109 #include <sys/param.h>
110 #include <sys/atomic.h>
111 #include <sys/device.h>
112 #include <sys/kernel.h>
113 #include <sys/kmem.h>
114 #include <sys/malloc.h>
115 #include <sys/module.h>
116 #include <sys/mutex.h>
117 #include <sys/sysctl.h>
118 #include <sys/systm.h>
119 #include <sys/timetc.h>
120
121 #include <dev/acpi/acpireg.h>
122 #include <dev/acpi/acpivar.h>
123 #include <dev/acpi/acpi_mcfg.h>
124 #include <dev/acpi/acpi_osd.h>
125 #include <dev/acpi/acpi_pci.h>
126 #include <dev/acpi/acpi_power.h>
127 #include <dev/acpi/acpi_timer.h>
128 #include <dev/acpi/acpi_wakedev.h>
129
130 #include <machine/acpi_machdep.h>
131
132 #include "ioconf.h"
133
134 #define _COMPONENT ACPI_BUS_COMPONENT
135 ACPI_MODULE_NAME ("acpi")
136
137 /*
138 * The acpi_active variable is set when the ACPI subsystem is active.
139 * Machine-dependent code may wish to skip other steps (such as attaching
140 * subsystems that ACPI supercedes) when ACPI is active.
141 */
142 int acpi_active = 0;
143 int acpi_suspended = 0;
144 int acpi_force_load = 0;
145 int acpi_verbose_loaded = 0;
146
147 struct acpi_softc *acpi_softc = NULL;
148 static uint64_t acpi_root_pointer;
149 extern kmutex_t acpi_interrupt_list_mtx;
150 static ACPI_HANDLE acpi_scopes[4];
151 ACPI_TABLE_HEADER *madt_header;
152 ACPI_TABLE_HEADER *gtdt_header;
153
154 /*
155 * This structure provides a context for the ACPI
156 * namespace walk performed in acpi_build_tree().
157 */
158 struct acpi_walkcontext {
159 struct acpi_softc *aw_sc;
160 struct acpi_devnode *aw_parent;
161 };
162
163 /*
164 * Ignored HIDs.
165 */
166 static const char * const acpi_ignored_ids[] = {
167 #if defined(i386) || defined(x86_64)
168 "ACPI0007", /* ACPI CPUs do not attach to acpi(4) */
169 "PNP0000", /* AT interrupt controller is handled internally */
170 "PNP0001", /* EISA interrupt controller is handled internally */
171 "PNP0200", /* AT DMA controller is handled internally */
172 "PNP0A??", /* PCI Busses are handled internally */
173 "PNP0B00", /* AT RTC is handled internally */
174 "PNP0C02", /* PnP motherboard resources */
175 "PNP0C0F", /* ACPI PCI link devices are handled internally */
176 #endif
177 #if defined(x86_64)
178 "PNP0C04", /* FPU is handled internally */
179 #endif
180 #if defined(__aarch64__)
181 "ACPI0004", /* ACPI module devices are handled internally */
182 "PNP0C0F", /* ACPI PCI link devices are handled internally */
183 #endif
184 NULL
185 };
186
187 /*
188 * Devices that should be attached early.
189 */
190 static const char * const acpi_early_ids[] = {
191 "PNP0C09", /* acpiec(4) */
192 NULL
193 };
194
195 static int acpi_match(device_t, cfdata_t, void *);
196 static int acpi_submatch(device_t, cfdata_t, const int *, void *);
197 static void acpi_attach(device_t, device_t, void *);
198 static int acpi_detach(device_t, int);
199 static void acpi_childdet(device_t, device_t);
200 static bool acpi_suspend(device_t, const pmf_qual_t *);
201 static bool acpi_resume(device_t, const pmf_qual_t *);
202
203 static void acpi_build_tree(struct acpi_softc *);
204 static void acpi_config_tree(struct acpi_softc *);
205 static void acpi_config_dma(struct acpi_softc *);
206 static ACPI_STATUS acpi_make_devnode(ACPI_HANDLE, uint32_t,
207 void *, void **);
208 static ACPI_STATUS acpi_make_devnode_post(ACPI_HANDLE, uint32_t,
209 void *, void **);
210 static void acpi_make_name(struct acpi_devnode *, uint32_t);
211
212 static int acpi_rescan(device_t, const char *, const int *);
213 static void acpi_rescan_early(struct acpi_softc *);
214 static void acpi_rescan_nodes(struct acpi_softc *);
215 static void acpi_rescan_capabilities(device_t);
216 static int acpi_print(void *aux, const char *);
217
218 static void acpi_notify_handler(ACPI_HANDLE, uint32_t, void *);
219
220 static void acpi_register_fixed_button(struct acpi_softc *, int);
221 static void acpi_deregister_fixed_button(struct acpi_softc *, int);
222 static uint32_t acpi_fixed_button_handler(void *);
223 static void acpi_fixed_button_pressed(void *);
224
225 static void acpi_sleep_init(struct acpi_softc *);
226
227 static int sysctl_hw_acpi_fixedstats(SYSCTLFN_PROTO);
228 static int sysctl_hw_acpi_sleepstate(SYSCTLFN_PROTO);
229 static int sysctl_hw_acpi_sleepstates(SYSCTLFN_PROTO);
230
231 static bool acpi_is_scope(struct acpi_devnode *);
232 static ACPI_TABLE_HEADER *acpi_map_rsdt(void);
233 static void acpi_unmap_rsdt(ACPI_TABLE_HEADER *);
234
235 void acpi_print_verbose_stub(struct acpi_softc *);
236 void acpi_print_dev_stub(const char *);
237
238 static void acpi_activate_device(ACPI_HANDLE, ACPI_DEVICE_INFO **);
239 ACPI_STATUS acpi_allocate_resources(ACPI_HANDLE);
240
241 void (*acpi_print_verbose)(struct acpi_softc *) = acpi_print_verbose_stub;
242 void (*acpi_print_dev)(const char *) = acpi_print_dev_stub;
243
244 bus_dma_tag_t acpi_default_dma_tag(struct acpi_softc *, struct acpi_devnode *);
245 bus_dma_tag_t acpi_default_dma64_tag(struct acpi_softc *, struct acpi_devnode *);
246 pci_chipset_tag_t acpi_default_pci_chipset_tag(struct acpi_softc *, int, int);
247
248 CFATTACH_DECL2_NEW(acpi, sizeof(struct acpi_softc),
249 acpi_match, acpi_attach, acpi_detach, NULL, acpi_rescan, acpi_childdet);
250
251 /*
252 * Probe for ACPI support.
253 *
254 * This is called by the machine-dependent ACPI front-end.
255 * Note: this is not an autoconfiguration interface function.
256 */
257 int
acpi_probe(void)258 acpi_probe(void)
259 {
260 ACPI_TABLE_HEADER *rsdt;
261 ACPI_STATUS rv;
262 int quirks;
263
264 if (acpi_softc != NULL)
265 panic("%s: already probed", __func__);
266
267 mutex_init(&acpi_interrupt_list_mtx, MUTEX_DEFAULT, IPL_NONE);
268
269 /*
270 * Start up ACPICA.
271 */
272 AcpiGbl_EnableInterpreterSlack = true;
273
274 rv = AcpiInitializeSubsystem();
275
276 if (ACPI_FAILURE(rv)) {
277 aprint_error("%s: failed to initialize subsystem\n", __func__);
278 return 0;
279 }
280
281 /*
282 * Allocate space for RSDT/XSDT and DSDT,
283 * but allow resizing if more tables exist.
284 */
285 rv = AcpiInitializeTables(NULL, 2, true);
286
287 if (ACPI_FAILURE(rv)) {
288 aprint_error("%s: failed to initialize tables\n", __func__);
289 goto fail;
290 }
291
292 rv = AcpiLoadTables();
293
294 if (ACPI_FAILURE(rv)) {
295 aprint_error("%s: failed to load tables\n", __func__);
296 goto fail;
297 }
298
299 rsdt = acpi_map_rsdt();
300
301 if (rsdt == NULL) {
302 aprint_error("%s: failed to map RSDT\n", __func__);
303 goto fail;
304 }
305
306 quirks = acpi_find_quirks();
307
308 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_BROKEN) != 0) {
309
310 aprint_normal("ACPI: BIOS is listed as broken:\n");
311 aprint_normal("ACPI: X/RSDT: OemId <%6.6s,%8.8s,%08x>, "
312 "AslId <%4.4s,%08x>\n", rsdt->OemId, rsdt->OemTableId,
313 rsdt->OemRevision, rsdt->AslCompilerId,
314 rsdt->AslCompilerRevision);
315 aprint_normal("ACPI: Not used. Set acpi_force_load to use.\n");
316
317 acpi_unmap_rsdt(rsdt);
318 goto fail;
319 }
320
321 if (acpi_force_load == 0 && (quirks & ACPI_QUIRK_OLDBIOS) != 0) {
322
323 aprint_normal("ACPI: BIOS is too old (%s). "
324 "Set acpi_force_load to use.\n",
325 pmf_get_platform("bios-date"));
326
327 acpi_unmap_rsdt(rsdt);
328 goto fail;
329 }
330
331 acpi_unmap_rsdt(rsdt);
332
333 rv = AcpiEnableSubsystem(~(ACPI_NO_HARDWARE_INIT|ACPI_NO_ACPI_ENABLE));
334
335 if (ACPI_FAILURE(rv)) {
336 aprint_error("%s: failed to enable subsystem\n", __func__);
337 goto fail;
338 }
339
340 return 1;
341
342 fail:
343 (void)AcpiTerminate();
344
345 return 0;
346 }
347
348 void
acpi_disable(void)349 acpi_disable(void)
350 {
351
352 if (acpi_softc == NULL)
353 return;
354
355 KASSERT(acpi_active != 0);
356
357 if (AcpiGbl_FADT.SmiCommand != 0)
358 AcpiDisable();
359 }
360
361 int
acpi_check(device_t parent,const char * ifattr)362 acpi_check(device_t parent, const char *ifattr)
363 {
364 return config_search(parent, NULL,
365 CFARGS(.submatch = acpi_submatch,
366 .iattr = ifattr)) != NULL;
367 }
368
369 int
acpi_reset(void)370 acpi_reset(void)
371 {
372 struct acpi_softc *sc = acpi_softc;
373 ACPI_GENERIC_ADDRESS *ResetReg;
374 ACPI_PCI_ID PciId;
375 ACPI_STATUS status;
376
377 if (sc == NULL)
378 return ENXIO;
379
380 ResetReg = &AcpiGbl_FADT.ResetRegister;
381
382 /* Check if the reset register is supported */
383 if (!(AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) ||
384 !ResetReg->Address) {
385 return ENOENT;
386 }
387
388 switch (ResetReg->SpaceId) {
389 case ACPI_ADR_SPACE_PCI_CONFIG:
390 PciId.Segment = PciId.Bus = 0;
391 PciId.Device = ACPI_GAS_PCI_DEV(ResetReg->Address);
392 PciId.Function = ACPI_GAS_PCI_FUNC(ResetReg->Address);
393 status = AcpiOsWritePciConfiguration(&PciId,
394 ACPI_GAS_PCI_REGOFF(ResetReg->Address),
395 AcpiGbl_FADT.ResetValue, ResetReg->BitWidth);
396 break;
397 case ACPI_ADR_SPACE_SYSTEM_IO:
398 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
399 status = AcpiReset();
400 break;
401 default:
402 status = AE_TYPE;
403 break;
404 }
405
406 return ACPI_FAILURE(status) ? EIO : 0;
407 }
408
409 /*
410 * Autoconfiguration.
411 */
412 static int
acpi_match(device_t parent,cfdata_t match,void * aux)413 acpi_match(device_t parent, cfdata_t match, void *aux)
414 {
415 /*
416 * XXX: Nada; MD code has called acpi_probe().
417 */
418 return 1;
419 }
420
421 static int
acpi_submatch(device_t parent,cfdata_t cf,const int * locs,void * aux)422 acpi_submatch(device_t parent, cfdata_t cf, const int *locs, void *aux)
423 {
424 struct cfattach *ca;
425
426 ca = config_cfattach_lookup(cf->cf_name, cf->cf_atname);
427
428 return (ca == &acpi_ca);
429 }
430
431 static void
acpi_attach(device_t parent,device_t self,void * aux)432 acpi_attach(device_t parent, device_t self, void *aux)
433 {
434 struct acpi_softc *sc = device_private(self);
435 struct acpibus_attach_args *aa = aux;
436 ACPI_TABLE_HEADER *rsdt, *hdr;
437 ACPI_STATUS rv;
438 int i;
439
440 aprint_naive("\n");
441 aprint_normal(": Intel ACPICA %08x\n", ACPI_CA_VERSION);
442
443 if (acpi_softc != NULL)
444 panic("%s: already attached", __func__);
445
446 rsdt = acpi_map_rsdt();
447
448 if (rsdt == NULL)
449 aprint_error_dev(self, "X/RSDT: Not found\n");
450 else {
451 aprint_verbose_dev(self,
452 "X/RSDT: OemId <%6.6s,%8.8s,%08x>, AslId <%4.4s,%08x>\n",
453 rsdt->OemId, rsdt->OemTableId,
454 rsdt->OemRevision,
455 rsdt->AslCompilerId, rsdt->AslCompilerRevision);
456 }
457
458 acpi_unmap_rsdt(rsdt);
459
460 sc->sc_dev = self;
461 sc->sc_root = NULL;
462
463 sc->sc_sleepstate = ACPI_STATE_S0;
464 sc->sc_quirks = acpi_find_quirks();
465
466 sysmon_power_settype("acpi");
467
468 sc->sc_iot = aa->aa_iot;
469 sc->sc_memt = aa->aa_memt;
470 sc->sc_pciflags = aa->aa_pciflags;
471 sc->sc_ic = aa->aa_ic;
472 sc->sc_dmat = aa->aa_dmat;
473 sc->sc_dmat64 = aa->aa_dmat64;
474
475 SIMPLEQ_INIT(&sc->sc_head);
476
477 acpi_softc = sc;
478
479 if (pmf_device_register(self, acpi_suspend, acpi_resume) != true)
480 aprint_error_dev(self, "couldn't establish power handler\n");
481
482 /*
483 * Bring ACPICA on-line.
484 */
485
486 rv = AcpiEnableSubsystem(ACPI_FULL_INITIALIZATION);
487
488 if (ACPI_FAILURE(rv))
489 goto fail;
490
491 /*
492 * Early initialization of acpiec(4) via ECDT.
493 */
494 config_found(self, aa, NULL,
495 CFARGS(.iattr = "acpiecdtbus"));
496
497 rv = AcpiInitializeObjects(ACPI_FULL_INITIALIZATION);
498
499 if (ACPI_FAILURE(rv))
500 goto fail;
501
502 /*
503 * Scan the namespace and build our device tree.
504 */
505 acpi_build_tree(sc);
506
507 #if NPCI > 0
508 /*
509 * Probe MCFG table
510 */
511 acpimcfg_probe(sc);
512 #endif
513
514 acpi_md_callback(sc);
515
516 /*
517 * Early initialization of the _PDC control method
518 * that may load additional SSDT tables dynamically.
519 */
520 (void)acpi_md_pdc();
521
522 /*
523 * Install global notify handlers.
524 */
525 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT,
526 ACPI_SYSTEM_NOTIFY, acpi_notify_handler, NULL);
527
528 if (ACPI_FAILURE(rv))
529 goto fail;
530
531 rv = AcpiInstallNotifyHandler(ACPI_ROOT_OBJECT,
532 ACPI_DEVICE_NOTIFY, acpi_notify_handler, NULL);
533
534 if (ACPI_FAILURE(rv))
535 goto fail;
536
537 acpi_active = 1;
538
539 if (!AcpiGbl_ReducedHardware) {
540 /* Show SCI interrupt. */
541 aprint_verbose_dev(self, "SCI interrupting at int %u\n",
542 AcpiGbl_FADT.SciInterrupt);
543
544 /*
545 * Install fixed-event handlers.
546 */
547 acpi_register_fixed_button(sc, ACPI_EVENT_POWER_BUTTON);
548 acpi_register_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON);
549 }
550
551 /*
552 * Load drivers that operate on System Description Tables.
553 */
554 for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i) {
555 rv = AcpiGetTableByIndex(i, &hdr);
556 if (ACPI_FAILURE(rv)) {
557 continue;
558 }
559 config_found(sc->sc_dev, hdr, NULL,
560 CFARGS(.iattr = "acpisdtbus"));
561 AcpiPutTable(hdr);
562 }
563
564 acpitimer_init(sc);
565 acpi_config_tree(sc);
566 acpi_sleep_init(sc);
567
568 #ifdef ACPI_DEBUG
569 acpi_debug_init();
570 #endif
571
572 /*
573 * Print debug information.
574 */
575 acpi_print_verbose(sc);
576
577 return;
578
579 fail:
580 aprint_error("%s: failed to initialize ACPI: %s\n",
581 __func__, AcpiFormatException(rv));
582 }
583
584 /*
585 * XXX: This is incomplete.
586 */
587 static int
acpi_detach(device_t self,int flags)588 acpi_detach(device_t self, int flags)
589 {
590 struct acpi_softc *sc = device_private(self);
591 ACPI_STATUS rv;
592 int rc;
593
594 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT,
595 ACPI_SYSTEM_NOTIFY, acpi_notify_handler);
596
597 if (ACPI_FAILURE(rv))
598 return EBUSY;
599
600 rv = AcpiRemoveNotifyHandler(ACPI_ROOT_OBJECT,
601 ACPI_DEVICE_NOTIFY, acpi_notify_handler);
602
603 if (ACPI_FAILURE(rv))
604 return EBUSY;
605
606 if ((rc = config_detach_children(self, flags)) != 0)
607 return rc;
608
609 if ((rc = acpitimer_detach()) != 0)
610 return rc;
611
612 if (!AcpiGbl_ReducedHardware) {
613 acpi_deregister_fixed_button(sc, ACPI_EVENT_POWER_BUTTON);
614 acpi_deregister_fixed_button(sc, ACPI_EVENT_SLEEP_BUTTON);
615 }
616
617 pmf_device_deregister(self);
618
619 acpi_softc = NULL;
620
621 return 0;
622 }
623
624 static void
acpi_childdet(device_t self,device_t child)625 acpi_childdet(device_t self, device_t child)
626 {
627 struct acpi_softc *sc = device_private(self);
628 struct acpi_devnode *ad;
629
630 if (sc->sc_apmbus == child)
631 sc->sc_apmbus = NULL;
632
633 if (sc->sc_hpet == child)
634 sc->sc_hpet = NULL;
635
636 if (sc->sc_wdrt == child)
637 sc->sc_wdrt = NULL;
638
639 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) {
640
641 if (ad->ad_device == child)
642 ad->ad_device = NULL;
643 }
644 }
645
646 static bool
acpi_suspend(device_t dv,const pmf_qual_t * qual)647 acpi_suspend(device_t dv, const pmf_qual_t *qual)
648 {
649
650 acpi_suspended = 1;
651
652 return true;
653 }
654
655 static bool
acpi_resume(device_t dv,const pmf_qual_t * qual)656 acpi_resume(device_t dv, const pmf_qual_t *qual)
657 {
658
659 acpi_suspended = 0;
660
661 return true;
662 }
663
664 /*
665 * Namespace scan.
666 */
667 static void
acpi_build_tree(struct acpi_softc * sc)668 acpi_build_tree(struct acpi_softc *sc)
669 {
670 struct acpi_walkcontext awc;
671
672 /*
673 * Get the root scope handles.
674 */
675 KASSERT(__arraycount(acpi_scopes) == 4);
676
677 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_PR_", &acpi_scopes[0]);
678 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &acpi_scopes[1]);
679 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SI_", &acpi_scopes[2]);
680 (void)AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_TZ_", &acpi_scopes[3]);
681
682 /*
683 * Make the root node.
684 */
685 awc.aw_sc = sc;
686 awc.aw_parent = NULL;
687
688 (void)acpi_make_devnode(ACPI_ROOT_OBJECT, 0, &awc, NULL);
689
690 KASSERT(sc->sc_root == NULL);
691 KASSERT(awc.aw_parent != NULL);
692
693 sc->sc_root = awc.aw_parent;
694
695 /*
696 * Build the internal namespace.
697 */
698 (void)AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, UINT32_MAX,
699 acpi_make_devnode, acpi_make_devnode_post, &awc, NULL);
700
701 #if NPCI > 0
702 /*
703 * Scan the internal namespace.
704 */
705 (void)acpi_pcidev_scan(sc->sc_root);
706 #endif
707 }
708
709 static void
acpi_config_tree(struct acpi_softc * sc)710 acpi_config_tree(struct acpi_softc *sc)
711 {
712 /*
713 * Assign bus_dma resources
714 */
715 acpi_config_dma(sc);
716
717 /*
718 * Configure all everything found "at acpi?".
719 */
720 (void)acpi_rescan(sc->sc_dev, NULL, NULL);
721
722 /*
723 * Update GPE information.
724 *
725 * Note that this must be called after
726 * all GPE handlers have been installed.
727 */
728 (void)AcpiUpdateAllGpes();
729
730 /*
731 * Defer rest of the configuration.
732 */
733 (void)config_defer(sc->sc_dev, acpi_rescan_capabilities);
734 }
735
736 // XXXNH?
737 static void
acpi_config_dma(struct acpi_softc * sc)738 acpi_config_dma(struct acpi_softc *sc)
739 {
740 struct acpi_devnode *ad;
741
742 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) {
743
744 if (ad->ad_device != NULL)
745 continue;
746
747 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE)
748 continue;
749
750 ad->ad_dmat = acpi_get_dma_tag(sc, ad);
751 ad->ad_dmat64 = acpi_get_dma64_tag(sc, ad);
752 }
753 }
754
755 static ACPI_STATUS
acpi_make_devnode(ACPI_HANDLE handle,uint32_t level,void * context,void ** status)756 acpi_make_devnode(ACPI_HANDLE handle, uint32_t level,
757 void *context, void **status)
758 {
759 struct acpi_walkcontext *awc = context;
760 struct acpi_softc *sc = awc->aw_sc;
761 struct acpi_devnode *ad;
762 ACPI_DEVICE_INFO *devinfo;
763 ACPI_OBJECT_TYPE type;
764 ACPI_STATUS rv;
765
766 rv = AcpiGetObjectInfo(handle, &devinfo);
767
768 if (ACPI_FAILURE(rv))
769 return AE_OK; /* Do not terminate the walk. */
770
771 type = devinfo->Type;
772
773 switch (type) {
774
775 case ACPI_TYPE_DEVICE:
776 acpi_activate_device(handle, &devinfo);
777 /* FALLTHROUGH */
778
779 case ACPI_TYPE_PROCESSOR:
780 case ACPI_TYPE_THERMAL:
781 case ACPI_TYPE_POWER:
782
783 ad = kmem_zalloc(sizeof(*ad), KM_SLEEP);
784
785 ad->ad_device = NULL;
786 ad->ad_notify = NULL;
787 ad->ad_pciinfo = NULL;
788 ad->ad_wakedev = NULL;
789
790 ad->ad_type = type;
791 ad->ad_handle = handle;
792 ad->ad_devinfo = devinfo;
793
794 ad->ad_root = sc->sc_dev;
795 ad->ad_parent = awc->aw_parent;
796
797 acpi_match_node_init(ad);
798 acpi_make_name(ad, devinfo->Name);
799
800 /*
801 * Identify wake GPEs from the _PRW. Note that
802 * AcpiUpdateAllGpes() must be called afterwards.
803 */
804 if (ad->ad_devinfo->Type == ACPI_TYPE_DEVICE)
805 acpi_wakedev_init(ad);
806
807 SIMPLEQ_INIT(&ad->ad_child_head);
808 SIMPLEQ_INSERT_TAIL(&sc->sc_head, ad, ad_list);
809
810 if (ad->ad_parent != NULL) {
811
812 SIMPLEQ_INSERT_TAIL(&ad->ad_parent->ad_child_head,
813 ad, ad_child_list);
814 }
815
816 awc->aw_parent = ad;
817 break;
818
819 default:
820 ACPI_FREE(devinfo);
821 break;
822 }
823
824 return AE_OK;
825 }
826
827 static ACPI_STATUS
acpi_make_devnode_post(ACPI_HANDLE handle,uint32_t level,void * context,void ** status)828 acpi_make_devnode_post(ACPI_HANDLE handle, uint32_t level,
829 void *context, void **status)
830 {
831 struct acpi_walkcontext *awc = context;
832
833 KASSERT(awc != NULL);
834 KASSERT(awc->aw_parent != NULL);
835
836 if (handle == awc->aw_parent->ad_handle)
837 awc->aw_parent = awc->aw_parent->ad_parent;
838
839 return AE_OK;
840 }
841
842 static void
acpi_make_name(struct acpi_devnode * ad,uint32_t name)843 acpi_make_name(struct acpi_devnode *ad, uint32_t name)
844 {
845 ACPI_NAME_UNION *anu;
846 int clear, i;
847
848 anu = (ACPI_NAME_UNION *)&name;
849 ad->ad_name[4] = '\0';
850
851 for (i = 3, clear = 0; i >= 0; i--) {
852
853 if (clear == 0 && anu->Ascii[i] == '_')
854 ad->ad_name[i] = '\0';
855 else {
856 ad->ad_name[i] = anu->Ascii[i];
857 clear = 1;
858 }
859 }
860
861 if (ad->ad_name[0] == '\0')
862 ad->ad_name[0] = '_';
863 }
864
865 bus_dma_tag_t
acpi_default_dma_tag(struct acpi_softc * sc,struct acpi_devnode * ad)866 acpi_default_dma_tag(struct acpi_softc *sc, struct acpi_devnode *ad)
867 {
868 return sc->sc_dmat;
869 }
870 __weak_alias(acpi_get_dma_tag,acpi_default_dma_tag);
871
872 bus_dma_tag_t
acpi_default_dma64_tag(struct acpi_softc * sc,struct acpi_devnode * ad)873 acpi_default_dma64_tag(struct acpi_softc *sc, struct acpi_devnode *ad)
874 {
875 return sc->sc_dmat64;
876 }
877 __weak_alias(acpi_get_dma64_tag,acpi_default_dma64_tag);
878
879 pci_chipset_tag_t
acpi_default_pci_chipset_tag(struct acpi_softc * sc,int seg,int bbn)880 acpi_default_pci_chipset_tag(struct acpi_softc *sc, int seg, int bbn)
881 {
882 return NULL;
883 }
884 __weak_alias(acpi_get_pci_chipset_tag,acpi_default_pci_chipset_tag);
885
886 /*
887 * Device attachment.
888 */
889 static int
acpi_rescan(device_t self,const char * ifattr,const int * locators)890 acpi_rescan(device_t self, const char *ifattr, const int *locators)
891 {
892 struct acpi_softc *sc = device_private(self);
893 struct acpi_attach_args aa;
894
895 /*
896 * Try to attach hpet(4) first via a specific table.
897 */
898 aa.aa_memt = sc->sc_memt;
899
900 if (ifattr_match(ifattr, "acpihpetbus") && sc->sc_hpet == NULL) {
901 sc->sc_hpet = config_found(sc->sc_dev, &aa, NULL,
902 CFARGS(.iattr = "acpihpetbus"));
903 }
904
905 /*
906 * A two-pass scan for acpinodebus.
907 */
908 if (ifattr_match(ifattr, "acpinodebus")) {
909 acpi_rescan_early(sc);
910 acpi_rescan_nodes(sc);
911 }
912
913 /*
914 * Attach APM emulation and acpiwdrt(4).
915 */
916 if (ifattr_match(ifattr, "acpiapmbus") && sc->sc_apmbus == NULL) {
917 sc->sc_apmbus = config_found(sc->sc_dev, NULL, NULL,
918 CFARGS(.iattr = "acpiapmbus"));
919 }
920
921 if (ifattr_match(ifattr, "acpiwdrtbus") && sc->sc_wdrt == NULL) {
922 sc->sc_wdrt = config_found(sc->sc_dev, NULL, NULL,
923 CFARGS(.iattr = "acpiwdrtbus"));
924 }
925
926 return 0;
927 }
928
929 static void
acpi_rescan_early(struct acpi_softc * sc)930 acpi_rescan_early(struct acpi_softc *sc)
931 {
932 struct acpi_attach_args aa;
933 struct acpi_devnode *ad;
934
935 /*
936 * First scan for devices such as acpiec(4) that
937 * should be always attached before anything else.
938 * We want these devices to attach regardless of
939 * the device status and other restrictions.
940 */
941 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) {
942
943 if (ad->ad_device != NULL)
944 continue;
945
946 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE)
947 continue;
948
949 if (acpi_match_hid(ad->ad_devinfo, acpi_early_ids) == 0)
950 continue;
951
952 KASSERT(ad->ad_handle != NULL);
953
954 aa.aa_node = ad;
955 aa.aa_iot = sc->sc_iot;
956 aa.aa_memt = sc->sc_memt;
957 if (ad->ad_pciinfo != NULL) {
958 aa.aa_pc = ad->ad_pciinfo->ap_pc;
959 aa.aa_pciflags = sc->sc_pciflags;
960 }
961 aa.aa_ic = sc->sc_ic;
962 aa.aa_dmat = ad->ad_dmat;
963 aa.aa_dmat64 = ad->ad_dmat64;
964
965 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print,
966 CFARGS(.iattr = "acpinodebus",
967 .devhandle = devhandle_from_acpi(devhandle_invalid(),
968 ad->ad_handle)));
969 }
970 }
971
972 static void
acpi_rescan_nodes(struct acpi_softc * sc)973 acpi_rescan_nodes(struct acpi_softc *sc)
974 {
975 const char * const hpet_ids[] = { "PNP0103", NULL };
976 struct acpi_attach_args aa;
977 struct acpi_devnode *ad;
978 ACPI_DEVICE_INFO *di;
979
980 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) {
981
982 if (ad->ad_device != NULL)
983 continue;
984
985 /*
986 * There is a bug in ACPICA: it defines the type
987 * of the scopes incorrectly for its own reasons.
988 */
989 if (acpi_is_scope(ad) != false)
990 continue;
991
992 di = ad->ad_devinfo;
993
994 /*
995 * We only attach devices which are present, enabled, and
996 * functioning properly. However, if a device is enabled,
997 * it is decoding resources and we should claim these,
998 * if possible. This requires changes to bus_space(9).
999 */
1000 if (di->Type == ACPI_TYPE_DEVICE &&
1001 !acpi_device_present(ad->ad_handle)) {
1002 continue;
1003 }
1004
1005 if (di->Type == ACPI_TYPE_POWER)
1006 continue;
1007
1008 if (di->Type == ACPI_TYPE_PROCESSOR)
1009 continue;
1010
1011 if (acpi_match_hid(di, acpi_early_ids) != 0)
1012 continue;
1013
1014 if (acpi_match_hid(di, acpi_ignored_ids) != 0)
1015 continue;
1016
1017 if (acpi_match_hid(di, hpet_ids) != 0 && sc->sc_hpet != NULL)
1018 continue;
1019
1020 KASSERT(ad->ad_handle != NULL);
1021
1022 aa.aa_node = ad;
1023 aa.aa_iot = sc->sc_iot;
1024 aa.aa_memt = sc->sc_memt;
1025 if (ad->ad_pciinfo != NULL) {
1026 aa.aa_pc = ad->ad_pciinfo->ap_pc;
1027 aa.aa_pciflags = sc->sc_pciflags;
1028 }
1029 aa.aa_ic = sc->sc_ic;
1030 aa.aa_dmat = ad->ad_dmat;
1031 aa.aa_dmat64 = ad->ad_dmat64;
1032
1033 ad->ad_device = config_found(sc->sc_dev, &aa, acpi_print,
1034 CFARGS(.iattr = "acpinodebus",
1035 .devhandle = devhandle_from_acpi(devhandle_invalid(),
1036 ad->ad_handle)));
1037 }
1038 }
1039
1040 static void
acpi_rescan_capabilities(device_t self)1041 acpi_rescan_capabilities(device_t self)
1042 {
1043 struct acpi_softc *sc = device_private(self);
1044 struct acpi_devnode *ad;
1045 ACPI_HANDLE tmp;
1046 ACPI_STATUS rv;
1047
1048 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) {
1049
1050 if (ad->ad_devinfo->Type != ACPI_TYPE_DEVICE)
1051 continue;
1052
1053 /*
1054 * Scan power resource capabilities.
1055 *
1056 * If any power states are supported,
1057 * at least _PR0 and _PR3 must be present.
1058 */
1059 rv = AcpiGetHandle(ad->ad_handle, "_PR0", &tmp);
1060
1061 if (ACPI_SUCCESS(rv)) {
1062 ad->ad_flags |= ACPI_DEVICE_POWER;
1063 acpi_power_add(ad);
1064 }
1065
1066 /*
1067 * Scan wake-up capabilities.
1068 */
1069 if (ad->ad_wakedev != NULL) {
1070 ad->ad_flags |= ACPI_DEVICE_WAKEUP;
1071 acpi_wakedev_add(ad);
1072 }
1073
1074 /*
1075 * Scan docking stations.
1076 */
1077 rv = AcpiGetHandle(ad->ad_handle, "_DCK", &tmp);
1078
1079 if (ACPI_SUCCESS(rv))
1080 ad->ad_flags |= ACPI_DEVICE_DOCK;
1081
1082 /*
1083 * Scan devices that are ejectable.
1084 */
1085 rv = AcpiGetHandle(ad->ad_handle, "_EJ0", &tmp);
1086
1087 if (ACPI_SUCCESS(rv))
1088 ad->ad_flags |= ACPI_DEVICE_EJECT;
1089 }
1090 }
1091
1092 static int
acpi_print(void * aux,const char * pnp)1093 acpi_print(void *aux, const char *pnp)
1094 {
1095 struct acpi_attach_args *aa = aux;
1096 struct acpi_devnode *ad;
1097 const char *hid, *uid;
1098 ACPI_DEVICE_INFO *di;
1099
1100 ad = aa->aa_node;
1101 di = ad->ad_devinfo;
1102
1103 hid = di->HardwareId.String;
1104 uid = di->UniqueId.String;
1105
1106 if (pnp != NULL) {
1107
1108 if (di->Type != ACPI_TYPE_DEVICE) {
1109
1110 aprint_normal("%s (ACPI Object Type '%s') at %s",
1111 ad->ad_name, AcpiUtGetTypeName(ad->ad_type), pnp);
1112
1113 return UNCONF;
1114 }
1115
1116 if ((di->Valid & ACPI_VALID_HID) == 0 || hid == NULL)
1117 return 0;
1118
1119 aprint_normal("%s (%s) ", ad->ad_name, hid);
1120 acpi_print_dev(hid);
1121 aprint_normal("at %s", pnp);
1122
1123 return UNCONF;
1124 }
1125
1126 aprint_normal(" (%s", ad->ad_name);
1127
1128 if ((di->Valid & ACPI_VALID_HID) != 0 && hid != NULL) {
1129
1130 aprint_normal(", %s", hid);
1131
1132 if ((di->Valid & ACPI_VALID_UID) != 0 && uid != NULL) {
1133
1134 if (uid[0] == '\0')
1135 uid = "<null>";
1136
1137 aprint_normal("-%s", uid);
1138 }
1139 }
1140
1141 aprint_normal(")");
1142
1143 return UNCONF;
1144 }
1145
1146 /*
1147 * Notify.
1148 */
1149 static void
acpi_notify_handler(ACPI_HANDLE handle,uint32_t event,void * aux)1150 acpi_notify_handler(ACPI_HANDLE handle, uint32_t event, void *aux)
1151 {
1152 struct acpi_softc *sc = acpi_softc;
1153 struct acpi_devnode *ad;
1154 ACPI_NOTIFY_HANDLER notify;
1155
1156 KASSERT(sc != NULL);
1157 KASSERT(aux == NULL);
1158 KASSERT(acpi_active != 0);
1159
1160 if (acpi_suspended != 0)
1161 return;
1162
1163 /*
1164 * System: 0x00 - 0x7F.
1165 * Device: 0x80 - 0xFF.
1166 */
1167 switch (event) {
1168
1169 case ACPI_NOTIFY_BUS_CHECK:
1170 case ACPI_NOTIFY_DEVICE_CHECK:
1171 case ACPI_NOTIFY_DEVICE_WAKE:
1172 case ACPI_NOTIFY_EJECT_REQUEST:
1173 case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
1174 case ACPI_NOTIFY_FREQUENCY_MISMATCH:
1175 case ACPI_NOTIFY_BUS_MODE_MISMATCH:
1176 case ACPI_NOTIFY_POWER_FAULT:
1177 case ACPI_NOTIFY_CAPABILITIES_CHECK:
1178 case ACPI_NOTIFY_DEVICE_PLD_CHECK:
1179 case ACPI_NOTIFY_RESERVED:
1180 case ACPI_NOTIFY_LOCALITY_UPDATE:
1181 break;
1182 }
1183
1184 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "notification 0x%02X for "
1185 "%s (%p)\n", event, acpi_name(handle), handle));
1186
1187 /*
1188 * We deliver notifications only to drivers
1189 * that have been successfully attached and
1190 * that have registered a handler with us.
1191 * The opaque pointer is always the device_t.
1192 */
1193 SIMPLEQ_FOREACH(ad, &sc->sc_head, ad_list) {
1194
1195 if (ad->ad_device == NULL)
1196 continue;
1197
1198 if ((notify = atomic_load_acquire(&ad->ad_notify)) == NULL)
1199 continue;
1200
1201 if (ad->ad_handle != handle)
1202 continue;
1203
1204 (*notify)(ad->ad_handle, event, ad->ad_device);
1205
1206 return;
1207 }
1208
1209 aprint_debug_dev(sc->sc_dev, "unhandled notify 0x%02X "
1210 "for %s (%p)\n", event, acpi_name(handle), handle);
1211 }
1212
1213 bool
acpi_register_notify(struct acpi_devnode * ad,ACPI_NOTIFY_HANDLER notify)1214 acpi_register_notify(struct acpi_devnode *ad, ACPI_NOTIFY_HANDLER notify)
1215 {
1216 struct acpi_softc *sc = acpi_softc;
1217
1218 KASSERT(sc != NULL);
1219 KASSERT(acpi_active != 0);
1220
1221 if (acpi_suspended != 0)
1222 goto fail;
1223
1224 if (ad == NULL || notify == NULL)
1225 goto fail;
1226
1227 KASSERTMSG(ad->ad_notify == NULL,
1228 "%s: ACPI node %s already has notify handler: %p",
1229 ad->ad_device ? device_xname(ad->ad_device) : "(unknown)",
1230 ad->ad_name,
1231 ad->ad_notify);
1232 atomic_store_release(&ad->ad_notify, notify);
1233
1234 return true;
1235
1236 fail:
1237 aprint_error_dev(sc->sc_dev, "failed to register notify "
1238 "handler for %s (%p)\n", ad->ad_name, ad->ad_handle);
1239
1240 return false;
1241 }
1242
1243 void
acpi_deregister_notify(struct acpi_devnode * ad)1244 acpi_deregister_notify(struct acpi_devnode *ad)
1245 {
1246
1247 atomic_store_relaxed(&ad->ad_notify, NULL);
1248
1249 /* Wait for any in-flight calls to the notifier to complete. */
1250 AcpiOsWaitEventsComplete();
1251 }
1252
1253 /*
1254 * Fixed buttons.
1255 */
1256 static void
acpi_register_fixed_button(struct acpi_softc * sc,int event)1257 acpi_register_fixed_button(struct acpi_softc *sc, int event)
1258 {
1259 struct sysmon_pswitch *smpsw;
1260 ACPI_STATUS rv;
1261 int type;
1262
1263 switch (event) {
1264
1265 case ACPI_EVENT_POWER_BUTTON:
1266
1267 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0)
1268 return;
1269
1270 type = PSWITCH_TYPE_POWER;
1271 smpsw = &sc->sc_smpsw_power;
1272 break;
1273
1274 case ACPI_EVENT_SLEEP_BUTTON:
1275
1276 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0)
1277 return;
1278
1279 type = PSWITCH_TYPE_SLEEP;
1280 smpsw = &sc->sc_smpsw_sleep;
1281 break;
1282
1283 default:
1284 rv = AE_TYPE;
1285 goto fail;
1286 }
1287
1288 smpsw->smpsw_type = type;
1289 smpsw->smpsw_name = device_xname(sc->sc_dev);
1290
1291 if (sysmon_pswitch_register(smpsw) != 0) {
1292 rv = AE_ERROR;
1293 goto fail;
1294 }
1295
1296 AcpiClearEvent(event);
1297
1298 rv = AcpiInstallFixedEventHandler(event,
1299 acpi_fixed_button_handler, smpsw);
1300
1301 if (ACPI_FAILURE(rv)) {
1302 sysmon_pswitch_unregister(smpsw);
1303 goto fail;
1304 }
1305
1306 aprint_normal_dev(sc->sc_dev, "fixed %s button present\n",
1307 (type != PSWITCH_TYPE_SLEEP) ? "power" : "sleep");
1308
1309 return;
1310
1311 fail:
1312 aprint_error_dev(sc->sc_dev, "failed to register "
1313 "fixed event %d: %s\n", event, AcpiFormatException(rv));
1314 }
1315
1316 static void
acpi_deregister_fixed_button(struct acpi_softc * sc,int event)1317 acpi_deregister_fixed_button(struct acpi_softc *sc, int event)
1318 {
1319 struct sysmon_pswitch *smpsw;
1320 ACPI_STATUS rv;
1321
1322 switch (event) {
1323
1324 case ACPI_EVENT_POWER_BUTTON:
1325 smpsw = &sc->sc_smpsw_power;
1326
1327 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) != 0) {
1328 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_POWER);
1329 return;
1330 }
1331
1332 break;
1333
1334 case ACPI_EVENT_SLEEP_BUTTON:
1335 smpsw = &sc->sc_smpsw_sleep;
1336
1337 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) != 0) {
1338 KASSERT(smpsw->smpsw_type != PSWITCH_TYPE_SLEEP);
1339 return;
1340 }
1341
1342 break;
1343
1344 default:
1345 rv = AE_TYPE;
1346 goto fail;
1347 }
1348
1349 rv = AcpiRemoveFixedEventHandler(event, acpi_fixed_button_handler);
1350
1351 if (ACPI_SUCCESS(rv)) {
1352 sysmon_pswitch_unregister(smpsw);
1353 return;
1354 }
1355
1356 fail:
1357 aprint_error_dev(sc->sc_dev, "failed to deregister "
1358 "fixed event: %s\n", AcpiFormatException(rv));
1359 }
1360
1361 static uint32_t
acpi_fixed_button_handler(void * context)1362 acpi_fixed_button_handler(void *context)
1363 {
1364 static const int handler = OSL_NOTIFY_HANDLER;
1365 struct sysmon_pswitch *smpsw = context;
1366
1367 (void)AcpiOsExecute(handler, acpi_fixed_button_pressed, smpsw);
1368
1369 return ACPI_INTERRUPT_HANDLED;
1370 }
1371
1372 static void
acpi_fixed_button_pressed(void * context)1373 acpi_fixed_button_pressed(void *context)
1374 {
1375 struct sysmon_pswitch *smpsw = context;
1376
1377 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s fixed button pressed\n",
1378 (smpsw->smpsw_type != ACPI_EVENT_SLEEP_BUTTON) ?
1379 "power" : "sleep"));
1380
1381 sysmon_pswitch_event(smpsw, PSWITCH_EVENT_PRESSED);
1382 }
1383
1384 /*
1385 * Sleep.
1386 */
1387 static void
acpi_sleep_init(struct acpi_softc * sc)1388 acpi_sleep_init(struct acpi_softc *sc)
1389 {
1390 uint8_t a, b, i;
1391 ACPI_STATUS rv;
1392
1393 CTASSERT(ACPI_STATE_S0 == 0 && ACPI_STATE_S1 == 1);
1394 CTASSERT(ACPI_STATE_S2 == 2 && ACPI_STATE_S3 == 3);
1395 CTASSERT(ACPI_STATE_S4 == 4 && ACPI_STATE_S5 == 5);
1396
1397 /*
1398 * Evaluate supported sleep states.
1399 */
1400 for (i = ACPI_STATE_S0; i <= ACPI_STATE_S5; i++) {
1401
1402 rv = AcpiGetSleepTypeData(i, &a, &b);
1403
1404 if (ACPI_SUCCESS(rv))
1405 sc->sc_sleepstates |= __BIT(i);
1406 }
1407 }
1408
1409 /*
1410 * Must be called with interrupts enabled.
1411 */
1412 void
acpi_enter_sleep_state(int state)1413 acpi_enter_sleep_state(int state)
1414 {
1415 struct acpi_softc *sc = acpi_softc;
1416 ACPI_STATUS rv;
1417
1418 if (acpi_softc == NULL)
1419 return;
1420
1421 if (state == sc->sc_sleepstate)
1422 return;
1423
1424 if (state < ACPI_STATE_S0 || state > ACPI_STATE_S5)
1425 return;
1426
1427 aprint_normal_dev(sc->sc_dev, "entering state S%d\n", state);
1428
1429 switch (state) {
1430
1431 case ACPI_STATE_S0:
1432 sc->sc_sleepstate = ACPI_STATE_S0;
1433 return;
1434
1435 case ACPI_STATE_S1:
1436 case ACPI_STATE_S2:
1437 case ACPI_STATE_S3:
1438 case ACPI_STATE_S4:
1439
1440 if ((sc->sc_sleepstates & __BIT(state)) == 0) {
1441 aprint_error_dev(sc->sc_dev, "sleep state "
1442 "S%d is not available\n", state);
1443 return;
1444 }
1445
1446 /*
1447 * Evaluate the _TTS method. This should be done before
1448 * pmf_system_suspend(9) and the evaluation of _PTS.
1449 * We should also re-evaluate this once we return to
1450 * S0 or if we abort the sleep state transition in the
1451 * middle (see ACPI 3.0, section 7.3.6). In reality,
1452 * however, the _TTS method is seldom seen in the field.
1453 */
1454 rv = acpi_eval_set_integer(NULL, "\\_TTS", state);
1455
1456 if (ACPI_SUCCESS(rv))
1457 aprint_debug_dev(sc->sc_dev, "evaluated _TTS\n");
1458
1459 if (state != ACPI_STATE_S1 &&
1460 pmf_system_suspend(PMF_Q_NONE) != true) {
1461 aprint_error_dev(sc->sc_dev, "aborting suspend\n");
1462 break;
1463 }
1464
1465 /*
1466 * This will evaluate the _PTS and _SST methods,
1467 * but unlike the documentation claims, not _GTS,
1468 * which is evaluated in AcpiEnterSleepState().
1469 * This must be called with interrupts enabled.
1470 */
1471 rv = AcpiEnterSleepStatePrep(state);
1472
1473 if (ACPI_FAILURE(rv)) {
1474 aprint_error_dev(sc->sc_dev, "failed to prepare "
1475 "S%d: %s\n", state, AcpiFormatException(rv));
1476 break;
1477 }
1478
1479 /*
1480 * After the _PTS method has been evaluated, we can
1481 * enable wake and evaluate _PSW (ACPI 4.0, p. 284).
1482 */
1483 acpi_wakedev_commit(sc, state);
1484
1485 sc->sc_sleepstate = state;
1486
1487 if (state == ACPI_STATE_S1) {
1488
1489 /*
1490 * Before the transition to S1, CPU caches
1491 * must be flushed (see ACPI 4.0, 7.3.4.2).
1492 *
1493 * Note that interrupts must be off before
1494 * calling AcpiEnterSleepState(). Conversely,
1495 * AcpiLeaveSleepState() should always be
1496 * called with interrupts enabled.
1497 */
1498 acpi_md_OsDisableInterrupt();
1499
1500 ACPI_FLUSH_CPU_CACHE();
1501 rv = AcpiEnterSleepState(state);
1502
1503 if (ACPI_FAILURE(rv))
1504 aprint_error_dev(sc->sc_dev, "failed to "
1505 "enter S1: %s\n", AcpiFormatException(rv));
1506
1507 /*
1508 * Clear fixed events and disable all GPEs before
1509 * interrupts are enabled.
1510 */
1511 AcpiClearEvent(ACPI_EVENT_PMTIMER);
1512 AcpiClearEvent(ACPI_EVENT_GLOBAL);
1513 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1514 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1515 AcpiClearEvent(ACPI_EVENT_RTC);
1516 #if (!ACPI_REDUCED_HARDWARE)
1517 AcpiHwDisableAllGpes();
1518 #endif
1519
1520 acpi_md_OsEnableInterrupt();
1521 rv = AcpiLeaveSleepState(state);
1522
1523 } else {
1524
1525 (void)acpi_md_sleep(state);
1526
1527 if (state == ACPI_STATE_S4)
1528 AcpiEnable();
1529
1530 (void)pmf_system_bus_resume(PMF_Q_NONE);
1531 (void)AcpiLeaveSleepState(state);
1532 (void)AcpiSetFirmwareWakingVector(0, 0);
1533 (void)pmf_system_resume(PMF_Q_NONE);
1534 }
1535
1536 /*
1537 * No wake GPEs should be enabled at runtime.
1538 */
1539 acpi_wakedev_commit(sc, ACPI_STATE_S0);
1540 break;
1541
1542 case ACPI_STATE_S5:
1543
1544 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S5);
1545
1546 rv = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1547
1548 if (ACPI_FAILURE(rv)) {
1549 aprint_error_dev(sc->sc_dev, "failed to prepare "
1550 "S%d: %s\n", state, AcpiFormatException(rv));
1551 break;
1552 }
1553
1554 (void)AcpiDisableAllGpes();
1555
1556 DELAY(1000000);
1557
1558 sc->sc_sleepstate = state;
1559 acpi_md_OsDisableInterrupt();
1560
1561 (void)AcpiEnterSleepState(ACPI_STATE_S5);
1562
1563 aprint_error_dev(sc->sc_dev, "WARNING: powerdown failed!\n");
1564
1565 break;
1566 }
1567
1568 sc->sc_sleepstate = ACPI_STATE_S0;
1569
1570 (void)acpi_eval_set_integer(NULL, "\\_TTS", ACPI_STATE_S0);
1571 }
1572
1573 /*
1574 * Sysctl.
1575 */
1576 SYSCTL_SETUP(sysctl_acpi_setup, "sysctl hw.acpi subtree setup")
1577 {
1578 const struct sysctlnode *rnode, *snode;
1579 int err;
1580
1581 err = sysctl_createv(clog, 0, NULL, &rnode,
1582 CTLFLAG_PERMANENT, CTLTYPE_NODE,
1583 "acpi", SYSCTL_DESCR("ACPI subsystem parameters"),
1584 NULL, 0, NULL, 0,
1585 CTL_HW, CTL_CREATE, CTL_EOL);
1586
1587 if (err != 0)
1588 return;
1589
1590 (void)sysctl_createv(NULL, 0, &rnode, NULL,
1591 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD,
1592 "root", SYSCTL_DESCR("ACPI root pointer"),
1593 NULL, 0, &acpi_root_pointer, sizeof(acpi_root_pointer),
1594 CTL_CREATE, CTL_EOL);
1595
1596 err = sysctl_createv(clog, 0, &rnode, &snode,
1597 CTLFLAG_PERMANENT, CTLTYPE_NODE,
1598 "sleep", SYSCTL_DESCR("ACPI sleep"),
1599 NULL, 0, NULL, 0,
1600 CTL_CREATE, CTL_EOL);
1601
1602 if (err != 0)
1603 return;
1604
1605 (void)sysctl_createv(NULL, 0, &snode, NULL,
1606 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT,
1607 "state", SYSCTL_DESCR("System sleep state"),
1608 sysctl_hw_acpi_sleepstate, 0, NULL, 0,
1609 CTL_CREATE, CTL_EOL);
1610
1611 (void)sysctl_createv(NULL, 0, &snode, NULL,
1612 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_STRING,
1613 "states", SYSCTL_DESCR("Supported sleep states"),
1614 sysctl_hw_acpi_sleepstates, 0, NULL, 0,
1615 CTL_CREATE, CTL_EOL);
1616
1617 err = sysctl_createv(clog, 0, &rnode, &rnode,
1618 CTLFLAG_PERMANENT, CTLTYPE_NODE,
1619 "stat", SYSCTL_DESCR("ACPI statistics"),
1620 NULL, 0, NULL, 0,
1621 CTL_CREATE, CTL_EOL);
1622
1623 if (err != 0)
1624 return;
1625
1626 (void)sysctl_createv(clog, 0, &rnode, NULL,
1627 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD,
1628 "gpe", SYSCTL_DESCR("Number of dispatched GPEs"),
1629 NULL, 0, &AcpiGpeCount, sizeof(AcpiGpeCount),
1630 CTL_CREATE, CTL_EOL);
1631
1632 (void)sysctl_createv(clog, 0, &rnode, NULL,
1633 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD,
1634 "sci", SYSCTL_DESCR("Number of SCI interrupts"),
1635 NULL, 0, &AcpiSciCount, sizeof(AcpiSciCount),
1636 CTL_CREATE, CTL_EOL);
1637
1638 (void)sysctl_createv(clog, 0, &rnode, NULL,
1639 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD,
1640 "fixed", SYSCTL_DESCR("Number of fixed events"),
1641 sysctl_hw_acpi_fixedstats, 0, NULL, 0,
1642 CTL_CREATE, CTL_EOL);
1643
1644 (void)sysctl_createv(clog, 0, &rnode, NULL,
1645 CTLFLAG_PERMANENT | CTLFLAG_READONLY, CTLTYPE_QUAD,
1646 "method", SYSCTL_DESCR("Number of methods executed"),
1647 NULL, 0, &AcpiMethodCount, sizeof(AcpiMethodCount),
1648 CTL_CREATE, CTL_EOL);
1649
1650 CTASSERT(sizeof(AcpiGpeCount) == sizeof(uint64_t));
1651 CTASSERT(sizeof(AcpiSciCount) == sizeof(uint64_t));
1652 }
1653
1654 static int
sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS)1655 sysctl_hw_acpi_fixedstats(SYSCTLFN_ARGS)
1656 {
1657 struct sysctlnode node;
1658 uint64_t t;
1659 int err, i;
1660
1661 for (i = t = 0; i < __arraycount(AcpiFixedEventCount); i++)
1662 t += AcpiFixedEventCount[i];
1663
1664 node = *rnode;
1665 node.sysctl_data = &t;
1666
1667 err = sysctl_lookup(SYSCTLFN_CALL(&node));
1668
1669 if (err || newp == NULL)
1670 return err;
1671
1672 return 0;
1673 }
1674
1675 static int
sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS)1676 sysctl_hw_acpi_sleepstate(SYSCTLFN_ARGS)
1677 {
1678 struct acpi_softc *sc = acpi_softc;
1679 struct sysctlnode node;
1680 int err, t;
1681
1682 if (acpi_softc == NULL)
1683 return ENOSYS;
1684
1685 node = *rnode;
1686 t = sc->sc_sleepstate;
1687 node.sysctl_data = &t;
1688
1689 err = sysctl_lookup(SYSCTLFN_CALL(&node));
1690
1691 if (err || newp == NULL)
1692 return err;
1693
1694 if (t < ACPI_STATE_S0 || t > ACPI_STATE_S5)
1695 return EINVAL;
1696
1697 acpi_enter_sleep_state(t);
1698
1699 return 0;
1700 }
1701
1702 static int
sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS)1703 sysctl_hw_acpi_sleepstates(SYSCTLFN_ARGS)
1704 {
1705 struct acpi_softc *sc = acpi_softc;
1706 struct sysctlnode node;
1707 char t[3 * 6 + 1];
1708 int err;
1709
1710 if (acpi_softc == NULL)
1711 return ENOSYS;
1712
1713 (void)memset(t, '\0', sizeof(t));
1714
1715 (void)snprintf(t, sizeof(t), "%s%s%s%s%s%s",
1716 ((sc->sc_sleepstates & __BIT(0)) != 0) ? "S0 " : "",
1717 ((sc->sc_sleepstates & __BIT(1)) != 0) ? "S1 " : "",
1718 ((sc->sc_sleepstates & __BIT(2)) != 0) ? "S2 " : "",
1719 ((sc->sc_sleepstates & __BIT(3)) != 0) ? "S3 " : "",
1720 ((sc->sc_sleepstates & __BIT(4)) != 0) ? "S4 " : "",
1721 ((sc->sc_sleepstates & __BIT(5)) != 0) ? "S5 " : "");
1722
1723 node = *rnode;
1724 node.sysctl_data = &t;
1725
1726 err = sysctl_lookup(SYSCTLFN_CALL(&node));
1727
1728 if (err || newp == NULL)
1729 return err;
1730
1731 return 0;
1732 }
1733
1734 /*
1735 * Tables.
1736 */
1737 ACPI_PHYSICAL_ADDRESS
acpi_OsGetRootPointer(void)1738 acpi_OsGetRootPointer(void)
1739 {
1740 ACPI_PHYSICAL_ADDRESS PhysicalAddress;
1741
1742 /*
1743 * We let MD code handle this since there are multiple ways to do it:
1744 *
1745 * IA-32: Use AcpiFindRootPointer() to locate the RSDP.
1746 *
1747 * IA-64: Use the EFI.
1748 */
1749 PhysicalAddress = acpi_md_OsGetRootPointer();
1750
1751 if (acpi_root_pointer == 0)
1752 acpi_root_pointer = PhysicalAddress;
1753
1754 return PhysicalAddress;
1755 }
1756
1757 static ACPI_TABLE_HEADER *
acpi_map_rsdt(void)1758 acpi_map_rsdt(void)
1759 {
1760 ACPI_PHYSICAL_ADDRESS paddr;
1761 ACPI_TABLE_RSDP *rsdp;
1762
1763 paddr = AcpiOsGetRootPointer();
1764
1765 if (paddr == 0)
1766 return NULL;
1767
1768 rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP));
1769
1770 if (rsdp == NULL)
1771 return NULL;
1772
1773 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress)
1774 paddr = rsdp->XsdtPhysicalAddress;
1775 else
1776 paddr = rsdp->RsdtPhysicalAddress;
1777
1778 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
1779
1780 return AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER));
1781 }
1782
1783 /*
1784 * XXX: Refactor to be a generic function that unmaps tables.
1785 */
1786 static void
acpi_unmap_rsdt(ACPI_TABLE_HEADER * rsdt)1787 acpi_unmap_rsdt(ACPI_TABLE_HEADER *rsdt)
1788 {
1789
1790 if (rsdt == NULL)
1791 return;
1792
1793 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
1794 }
1795
1796 /*
1797 * XXX: Refactor to be a generic function that maps tables.
1798 */
1799 ACPI_STATUS
acpi_madt_map(void)1800 acpi_madt_map(void)
1801 {
1802 ACPI_STATUS rv;
1803
1804 if (madt_header != NULL)
1805 return AE_ALREADY_EXISTS;
1806
1807 rv = AcpiGetTable(ACPI_SIG_MADT, 1, &madt_header);
1808
1809 if (ACPI_FAILURE(rv))
1810 return rv;
1811
1812 return AE_OK;
1813 }
1814
1815 void
acpi_madt_unmap(void)1816 acpi_madt_unmap(void)
1817 {
1818 madt_header = NULL;
1819 }
1820
1821 ACPI_STATUS
acpi_gtdt_map(void)1822 acpi_gtdt_map(void)
1823 {
1824 ACPI_STATUS rv;
1825
1826 if (gtdt_header != NULL)
1827 return AE_ALREADY_EXISTS;
1828
1829 rv = AcpiGetTable(ACPI_SIG_GTDT, 1, >dt_header);
1830
1831 if (ACPI_FAILURE(rv))
1832 return rv;
1833
1834 return AE_OK;
1835 }
1836
1837 void
acpi_gtdt_unmap(void)1838 acpi_gtdt_unmap(void)
1839 {
1840 gtdt_header = NULL;
1841 }
1842
1843 /*
1844 * XXX: Refactor to be a generic function that walks tables.
1845 */
1846 void
acpi_madt_walk(ACPI_STATUS (* func)(ACPI_SUBTABLE_HEADER *,void *),void * aux)1847 acpi_madt_walk(ACPI_STATUS (*func)(ACPI_SUBTABLE_HEADER *, void *), void *aux)
1848 {
1849 ACPI_SUBTABLE_HEADER *hdrp;
1850 char *madtend, *where;
1851
1852 madtend = (char *)madt_header + madt_header->Length;
1853 where = (char *)madt_header + sizeof (ACPI_TABLE_MADT);
1854
1855 while (where < madtend) {
1856
1857 hdrp = (ACPI_SUBTABLE_HEADER *)where;
1858
1859 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux)))
1860 break;
1861
1862 where += hdrp->Length;
1863 }
1864 }
1865
1866 void
acpi_gtdt_walk(ACPI_STATUS (* func)(ACPI_GTDT_HEADER *,void *),void * aux)1867 acpi_gtdt_walk(ACPI_STATUS (*func)(ACPI_GTDT_HEADER *, void *), void *aux)
1868 {
1869 ACPI_GTDT_HEADER *hdrp;
1870 char *gtdtend, *where;
1871
1872 gtdtend = (char *)gtdt_header + gtdt_header->Length;
1873 where = (char *)gtdt_header + sizeof (ACPI_TABLE_GTDT);
1874
1875 while (where < gtdtend) {
1876
1877 hdrp = (ACPI_GTDT_HEADER *)where;
1878
1879 if (hdrp->Length == 0 || ACPI_FAILURE(func(hdrp, aux)))
1880 break;
1881
1882 where += hdrp->Length;
1883 }
1884 }
1885
1886 /*
1887 * Miscellaneous.
1888 */
1889 static bool
acpi_is_scope(struct acpi_devnode * ad)1890 acpi_is_scope(struct acpi_devnode *ad)
1891 {
1892 int i;
1893
1894 /*
1895 * Return true if the node is a root scope.
1896 */
1897 if (ad->ad_parent == NULL)
1898 return false;
1899
1900 if (ad->ad_parent->ad_handle != ACPI_ROOT_OBJECT)
1901 return false;
1902
1903 for (i = 0; i < __arraycount(acpi_scopes); i++) {
1904
1905 if (acpi_scopes[i] == NULL)
1906 continue;
1907
1908 if (ad->ad_handle == acpi_scopes[i])
1909 return true;
1910 }
1911
1912 return false;
1913 }
1914
1915 bool
acpi_device_present(ACPI_HANDLE handle)1916 acpi_device_present(ACPI_HANDLE handle)
1917 {
1918 ACPI_STATUS rv;
1919 ACPI_INTEGER sta;
1920
1921 rv = acpi_eval_integer(handle, "_STA", &sta);
1922
1923 if (ACPI_FAILURE(rv)) {
1924 /* No _STA method -> must be there */
1925 return rv == AE_NOT_FOUND;
1926 }
1927
1928 return (sta & ACPI_STA_OK) == ACPI_STA_OK;
1929 }
1930
1931 /*
1932 * ACPIVERBOSE.
1933 */
1934 void
acpi_load_verbose(void)1935 acpi_load_verbose(void)
1936 {
1937
1938 if (acpi_verbose_loaded == 0)
1939 module_autoload("acpiverbose", MODULE_CLASS_MISC);
1940 }
1941
1942 void
acpi_print_verbose_stub(struct acpi_softc * sc)1943 acpi_print_verbose_stub(struct acpi_softc *sc)
1944 {
1945
1946 acpi_load_verbose();
1947
1948 if (acpi_verbose_loaded != 0)
1949 acpi_print_verbose(sc);
1950 }
1951
1952 void
acpi_print_dev_stub(const char * pnpstr)1953 acpi_print_dev_stub(const char *pnpstr)
1954 {
1955
1956 acpi_load_verbose();
1957
1958 if (acpi_verbose_loaded != 0)
1959 acpi_print_dev(pnpstr);
1960 }
1961
1962 MALLOC_DECLARE(M_ACPI); /* XXX: ACPI_ACTIVATE_DEV should use kmem(9). */
1963
1964 /*
1965 * ACPI_ACTIVATE_DEV.
1966 */
1967 static void
acpi_activate_device(ACPI_HANDLE handle,ACPI_DEVICE_INFO ** di)1968 acpi_activate_device(ACPI_HANDLE handle, ACPI_DEVICE_INFO **di)
1969 {
1970
1971 #ifndef ACPI_ACTIVATE_DEV
1972 return;
1973 }
1974 #else
1975 static const int valid = ACPI_VALID_HID;
1976 ACPI_DEVICE_INFO *newdi;
1977 ACPI_STATUS rv;
1978
1979
1980 /*
1981 * If the device is valid and present,
1982 * but not enabled, try to activate it.
1983 */
1984 if (((*di)->Valid & valid) != valid)
1985 return;
1986
1987 if (!acpi_device_present(handle))
1988 return;
1989
1990 rv = acpi_allocate_resources(handle);
1991
1992 if (ACPI_FAILURE(rv))
1993 goto fail;
1994
1995 rv = AcpiGetObjectInfo(handle, &newdi);
1996
1997 if (ACPI_FAILURE(rv))
1998 goto fail;
1999
2000 ACPI_FREE(*di);
2001 *di = newdi;
2002
2003 aprint_verbose_dev(acpi_softc->sc_dev,
2004 "%s activated\n", (*di)->HardwareId.String);
2005
2006 return;
2007
2008 fail:
2009 aprint_error_dev(acpi_softc->sc_dev, "failed to "
2010 "activate %s\n", (*di)->HardwareId.String);
2011 }
2012
2013 /*
2014 * XXX: This very incomplete.
2015 */
2016 ACPI_STATUS
2017 acpi_allocate_resources(ACPI_HANDLE handle)
2018 {
2019 ACPI_BUFFER bufp, bufc, bufn;
2020 ACPI_RESOURCE *resp, *resc, *resn;
2021 ACPI_RESOURCE_IRQ *irq;
2022 #if 0
2023 ACPI_RESOURCE_EXTENDED_IRQ *xirq;
2024 #endif
2025 ACPI_STATUS rv;
2026 uint delta;
2027
2028 rv = acpi_get(handle, &bufp, AcpiGetPossibleResources);
2029 if (ACPI_FAILURE(rv))
2030 goto out;
2031 rv = acpi_get(handle, &bufc, AcpiGetCurrentResources);
2032 if (ACPI_FAILURE(rv)) {
2033 goto out1;
2034 }
2035
2036 bufn.Length = 1000;
2037 bufn.Pointer = resn = malloc(bufn.Length, M_ACPI, M_WAITOK);
2038 resp = bufp.Pointer;
2039 resc = bufc.Pointer;
2040 while (resc->Type != ACPI_RESOURCE_TYPE_END_TAG &&
2041 resp->Type != ACPI_RESOURCE_TYPE_END_TAG) {
2042 while (resc->Type != resp->Type && resp->Type != ACPI_RESOURCE_TYPE_END_TAG)
2043 resp = ACPI_NEXT_RESOURCE(resp);
2044 if (resp->Type == ACPI_RESOURCE_TYPE_END_TAG)
2045 break;
2046 /* Found identical Id */
2047 resn->Type = resc->Type;
2048 switch (resc->Type) {
2049 case ACPI_RESOURCE_TYPE_IRQ:
2050 memcpy(&resn->Data, &resp->Data,
2051 sizeof(ACPI_RESOURCE_IRQ));
2052 irq = (ACPI_RESOURCE_IRQ *)&resn->Data;
2053 irq->Interrupts[0] =
2054 ((ACPI_RESOURCE_IRQ *)&resp->Data)->
2055 Interrupts[irq->InterruptCount-1];
2056 irq->InterruptCount = 1;
2057 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_IRQ);
2058 break;
2059 case ACPI_RESOURCE_TYPE_EXTENDED_IRQ:
2060 memcpy(&resn->Data, &resp->Data,
2061 sizeof(ACPI_RESOURCE_EXTENDED_IRQ));
2062 #if 0
2063 xirq = (ACPI_RESOURCE_EXTENDED_IRQ *)&resn->Data;
2064 /*
2065 * XXX: Not duplicating the interrupt logic above
2066 * because its not clear what it accomplishes.
2067 */
2068 xirq->Interrupts[0] =
2069 ((ACPI_RESOURCE_EXT_IRQ *)&resp->Data)->
2070 Interrupts[irq->NumberOfInterrupts-1];
2071 xirq->NumberOfInterrupts = 1;
2072 #endif
2073 resn->Length = ACPI_RS_SIZE(ACPI_RESOURCE_EXTENDED_IRQ);
2074 break;
2075 case ACPI_RESOURCE_TYPE_IO:
2076 memcpy(&resn->Data, &resp->Data,
2077 sizeof(ACPI_RESOURCE_IO));
2078 resn->Length = resp->Length;
2079 break;
2080 default:
2081 aprint_error_dev(acpi_softc->sc_dev,
2082 "%s: invalid type %u\n", __func__, resc->Type);
2083 rv = AE_BAD_DATA;
2084 goto out2;
2085 }
2086 resc = ACPI_NEXT_RESOURCE(resc);
2087 resn = ACPI_NEXT_RESOURCE(resn);
2088 resp = ACPI_NEXT_RESOURCE(resp);
2089 delta = (uint8_t *)resn - (uint8_t *)bufn.Pointer;
2090 if (delta >=
2091 bufn.Length-ACPI_RS_SIZE(ACPI_RESOURCE_DATA)) {
2092 bufn.Length *= 2;
2093 bufn.Pointer = realloc(bufn.Pointer, bufn.Length,
2094 M_ACPI, M_WAITOK);
2095 resn = (ACPI_RESOURCE *)((uint8_t *)bufn.Pointer +
2096 delta);
2097 }
2098 }
2099
2100 if (resc->Type != ACPI_RESOURCE_TYPE_END_TAG) {
2101 aprint_error_dev(acpi_softc->sc_dev,
2102 "%s: resc not exhausted\n", __func__);
2103 rv = AE_BAD_DATA;
2104 goto out3;
2105 }
2106
2107 resn->Type = ACPI_RESOURCE_TYPE_END_TAG;
2108 rv = AcpiSetCurrentResources(handle, &bufn);
2109
2110 if (ACPI_FAILURE(rv))
2111 aprint_error_dev(acpi_softc->sc_dev, "%s: failed to set "
2112 "resources: %s\n", __func__, AcpiFormatException(rv));
2113
2114 out3:
2115 free(bufn.Pointer, M_ACPI);
2116 out2:
2117 ACPI_FREE(bufc.Pointer);
2118 out1:
2119 ACPI_FREE(bufp.Pointer);
2120 out:
2121 return rv;
2122 }
2123
2124 #endif /* ACPI_ACTIVATE_DEV */
2125