30 */
31
32#include "opt_acpi.h"
33#include <sys/param.h>
34#include <sys/kernel.h>
35#include <sys/proc.h>
36#include <sys/fcntl.h>
37#include <sys/malloc.h>
38#include <sys/bus.h>
39#include <sys/conf.h>
40#include <sys/ioccom.h>
41#include <sys/reboot.h>
42#include <sys/sysctl.h>
43#include <sys/ctype.h>
44#include <sys/linker.h>
45#include <sys/power.h>
46#include <sys/sbuf.h>
47
48#include <machine/clock.h>
49#include <machine/resource.h>
50#include <machine/bus.h>
51#include <sys/rman.h>
52#include <isa/isavar.h>
53
54#include "acpi.h"
55#include <dev/acpica/acpivar.h>
56#include <dev/acpica/acpiio.h>
57#include <contrib/dev/acpica/acnamesp.h>
58
59MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
60
61/* Hooks for the ACPI CA debugging infrastructure */
62#define _COMPONENT ACPI_BUS
63ACPI_MODULE_NAME("ACPI")
64
65static d_open_t acpiopen;
66static d_close_t acpiclose;
67static d_ioctl_t acpiioctl;
68
69#define CDEV_MAJOR 152
70static struct cdevsw acpi_cdevsw = {
71 .d_open = acpiopen,
72 .d_close = acpiclose,
73 .d_ioctl = acpiioctl,
74 .d_name = "acpi",
75 .d_maj = CDEV_MAJOR,
76};
77
78static const char* sleep_state_names[] = {
79 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
80
81/* this has to be static, as the softc is gone when we need it */
82static int acpi_off_state = ACPI_STATE_S5;
83
84#if __FreeBSD_version >= 500000
85struct mtx acpi_mutex;
86#endif
87
88static int acpi_modevent(struct module *mod, int event, void *junk);
89static void acpi_identify(driver_t *driver, device_t parent);
90static int acpi_probe(device_t dev);
91static int acpi_attach(device_t dev);
92static device_t acpi_add_child(device_t bus, int order, const char *name,
93 int unit);
94static int acpi_print_child(device_t bus, device_t child);
95static int acpi_read_ivar(device_t dev, device_t child, int index,
96 uintptr_t *result);
97static int acpi_write_ivar(device_t dev, device_t child, int index,
98 uintptr_t value);
99static int acpi_set_resource(device_t dev, device_t child, int type,
100 int rid, u_long start, u_long count);
101static int acpi_get_resource(device_t dev, device_t child, int type,
102 int rid, u_long *startp, u_long *countp);
103static struct resource *acpi_alloc_resource(device_t bus, device_t child,
104 int type, int *rid, u_long start, u_long end,
105 u_long count, u_int flags);
106static int acpi_release_resource(device_t bus, device_t child, int type,
107 int rid, struct resource *r);
108static uint32_t acpi_isa_get_logicalid(device_t dev);
109static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
110static int acpi_isa_pnp_probe(device_t bus, device_t child,
111 struct isa_pnp_id *ids);
112static void acpi_probe_children(device_t bus);
113static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
114 void *context, void **status);
115static void acpi_shutdown_pre_sync(void *arg, int howto);
116static void acpi_shutdown_final(void *arg, int howto);
117static void acpi_enable_fixed_events(struct acpi_softc *sc);
118static void acpi_system_eventhandler_sleep(void *arg, int state);
119static void acpi_system_eventhandler_wakeup(void *arg, int state);
120static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
121static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
122static int acpi_pm_func(u_long cmd, void *arg, ...);
123
124static device_method_t acpi_methods[] = {
125 /* Device interface */
126 DEVMETHOD(device_identify, acpi_identify),
127 DEVMETHOD(device_probe, acpi_probe),
128 DEVMETHOD(device_attach, acpi_attach),
129 DEVMETHOD(device_detach, bus_generic_detach),
130 DEVMETHOD(device_shutdown, bus_generic_shutdown),
131 DEVMETHOD(device_suspend, bus_generic_suspend),
132 DEVMETHOD(device_resume, bus_generic_resume),
133
134 /* Bus interface */
135 DEVMETHOD(bus_add_child, acpi_add_child),
136 DEVMETHOD(bus_print_child, acpi_print_child),
137 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
138 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
139 DEVMETHOD(bus_set_resource, acpi_set_resource),
140 DEVMETHOD(bus_get_resource, acpi_get_resource),
141 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
142 DEVMETHOD(bus_release_resource, acpi_release_resource),
143 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
144 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
145 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
146 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
147 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
148
149 /* ISA emulation */
150 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
151
152 {0, 0}
153};
154
155static driver_t acpi_driver = {
156 "acpi",
157 acpi_methods,
158 sizeof(struct acpi_softc),
159};
160
161static devclass_t acpi_devclass;
162DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
163MODULE_VERSION(acpi, 100);
164
165SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RW, NULL, "ACPI debugging");
166static char acpi_ca_version[12];
167SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
168 acpi_ca_version, 0, "Version of Intel ACPI-CA");
169
170/*
171 * ACPI can only be loaded as a module by the loader; activating it after
172 * system bootstrap time is not useful, and can be fatal to the system.
173 * It also cannot be unloaded, since the entire system bus heirarchy hangs
174 * off it.
175 */
176static int
177acpi_modevent(struct module *mod, int event, void *junk)
178{
179 switch(event) {
180 case MOD_LOAD:
181 if (!cold) {
182 printf("The ACPI driver cannot be loaded after boot.\n");
183 return (EPERM);
184 }
185 break;
186 case MOD_UNLOAD:
187 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
188 return (EBUSY);
189 break;
190 default:
191 break;
192 }
193 return (0);
194}
195
196/*
197 * Perform early initialization.
198 */
199ACPI_STATUS
200acpi_Startup(void)
201{
202#ifdef ACPI_DEBUGGER
203 char *debugpoint;
204#endif
205 static int error, started = 0;
206
207 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
208
209 if (started)
210 return_VALUE(error);
211 started = 1;
212
213#if __FreeBSD_version >= 500000
214 /* Initialise the ACPI mutex */
215 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
216#endif
217
218 /* Start up the ACPI CA subsystem. */
219#ifdef ACPI_DEBUGGER
220 debugpoint = getenv("debug.acpi.debugger");
221 if (debugpoint) {
222 if (!strcmp(debugpoint, "init"))
223 acpi_EnterDebugger();
224 freeenv(debugpoint);
225 }
226#endif
227 if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) {
228 printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error));
229 return_VALUE(error);
230 }
231#ifdef ACPI_DEBUGGER
232 debugpoint = getenv("debug.acpi.debugger");
233 if (debugpoint) {
234 if (!strcmp(debugpoint, "tables"))
235 acpi_EnterDebugger();
236 freeenv(debugpoint);
237 }
238#endif
239
240 if (ACPI_FAILURE(error = AcpiLoadTables())) {
241 printf("ACPI: table load failed: %s\n", AcpiFormatException(error));
242 return_VALUE(error);
243 }
244 return_VALUE(AE_OK);
245}
246
247/*
248 * Detect ACPI, perform early initialisation
249 */
250static void
251acpi_identify(driver_t *driver, device_t parent)
252{
253 device_t child;
254
255 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
256
257 if (!cold)
258 return_VOID;
259
260 /* Check that we haven't been disabled with a hint. */
261 if (resource_disabled("acpi", 0))
262 return_VOID;
263
264 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "0x%x",
265 ACPI_CA_VERSION);
266
267 /* Make sure we're not being doubly invoked. */
268 if (device_find_child(parent, "acpi", 0) != NULL)
269 return_VOID;
270
271 /* Initialize ACPI-CA. */
272 if (ACPI_FAILURE(acpi_Startup()))
273 return_VOID;
274
275 /* Attach the actual ACPI device. */
276 if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) {
277 device_printf(parent, "ACPI: could not attach\n");
278 return_VOID;
279 }
280}
281
282/*
283 * Fetch some descriptive data from ACPI to put in our attach message
284 */
285static int
286acpi_probe(device_t dev)
287{
288 ACPI_TABLE_HEADER th;
289 char buf[20];
290 int error;
291 struct sbuf sb;
292 ACPI_STATUS status;
293 ACPI_LOCK_DECL;
294
295 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
296
297 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
298 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
299
300 device_printf(dev, "Other PM system enabled.\n");
301 return_VALUE(ENXIO);
302 }
303
304 ACPI_LOCK;
305
306 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) {
307 device_printf(dev, "couldn't get XSDT header: %s\n",
308 AcpiFormatException(status));
309 error = ENXIO;
310 } else {
311 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
312 sbuf_bcat(&sb, th.OemId, 6);
313 sbuf_trim(&sb);
314 sbuf_putc(&sb, ' ');
315 sbuf_bcat(&sb, th.OemTableId, 8);
316 sbuf_trim(&sb);
317 sbuf_finish(&sb);
318 device_set_desc_copy(dev, sbuf_data(&sb));
319 sbuf_delete(&sb);
320 error = 0;
321 }
322 ACPI_UNLOCK;
323 return_VALUE(error);
324}
325
326static int
327acpi_attach(device_t dev)
328{
329 struct acpi_softc *sc;
330 ACPI_STATUS status;
331 int error;
332 UINT32 flags;
333 char *env;
334#ifdef ACPI_DEBUGGER
335 char *debugpoint;
336#endif
337 ACPI_LOCK_DECL;
338
339 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
340 ACPI_LOCK;
341 sc = device_get_softc(dev);
342 bzero(sc, sizeof(*sc));
343 sc->acpi_dev = dev;
344
345#ifdef ACPI_DEBUGGER
346 debugpoint = getenv("debug.acpi.debugger");
347 if (debugpoint) {
348 if (!strcmp(debugpoint, "spaces"))
349 acpi_EnterDebugger();
350 freeenv(debugpoint);
351 }
352#endif
353
354 /* Install the default address space handlers. */
355 error = ENXIO;
356 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
357 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
358 if (ACPI_FAILURE(status)) {
359 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
360 AcpiFormatException(status));
361 goto out;
362 }
363 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
364 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
365 if (ACPI_FAILURE(status)) {
366 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
367 AcpiFormatException(status));
368 goto out;
369 }
370 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
371 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
372 if (ACPI_FAILURE(status)) {
373 device_printf(dev, "could not initialise PciConfig handler: %s\n",
374 AcpiFormatException(status));
375 goto out;
376 }
377
378 /*
379 * Bring ACPI fully online.
380 *
381 * Note that some systems (specifically, those with namespace evaluation
382 * issues that require the avoidance of parts of the namespace) must
383 * avoid running _INI and _STA on everything, as well as dodging the final
384 * object init pass.
385 *
386 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
387 *
388 * XXX We should arrange for the object init pass after we have attached
389 * all our child devices, but on many systems it works here.
390 */
391#ifdef ACPI_DEBUGGER
392 debugpoint = getenv("debug.acpi.debugger");
393 if (debugpoint) {
394 if (!strcmp(debugpoint, "enable"))
395 acpi_EnterDebugger();
396 freeenv(debugpoint);
397 }
398#endif
399 flags = 0;
400 if (testenv("debug.acpi.avoid"))
401 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
402 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
403 device_printf(dev, "Could not enable ACPI: %s\n",
404 AcpiFormatException(status));
405 goto out;
406 }
407
408 /*
409 * Call the ECDT probe function to provide EC functionality before
410 * the namespace has been evaluated.
411 */
412 acpi_ec_ecdt_probe(dev);
413
414 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
415 device_printf(dev, "Could not initialize ACPI objects: %s\n",
416 AcpiFormatException(status));
417 goto out;
418 }
419
420 /*
421 * Setup our sysctl tree.
422 *
423 * XXX: This doesn't check to make sure that none of these fail.
424 */
425 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
426 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
427 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
428 device_get_name(dev), CTLFLAG_RD, 0, "");
429 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
430 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
431 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
432 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
433 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
434 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
435 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
436 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
437 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
438 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
439 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
440 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
441 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
442 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
443 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
444 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
445 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
446 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
447 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
448 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW,
449 &sc->acpi_sleep_delay, 0, "sleep delay");
450 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
451 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW,
452 &sc->acpi_s4bios, 0, "S4BIOS mode");
453 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
454 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW,
455 &sc->acpi_verbose, 0, "verbose mode");
456 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
457 OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW,
458 &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff");
459
460 /*
461 * Default to 5 seconds before sleeping to give some machines time to
462 * stabilize.
463 */
464 sc->acpi_sleep_delay = 5;
465 sc->acpi_disable_on_poweroff = 1;
466 if (bootverbose)
467 sc->acpi_verbose = 1;
468 if ((env = getenv("hw.acpi.verbose")) && strcmp(env, "0")) {
469 sc->acpi_verbose = 1;
470 freeenv(env);
471 }
472
473 /* Only enable S4BIOS by default if the FACS says it is available. */
474 if (AcpiGbl_FACS->S4Bios_f != 0)
475 sc->acpi_s4bios = 1;
476
477 /*
478 * Dispatch the default sleep state to devices.
479 * TBD: should be configured from userland policy manager.
480 */
481 sc->acpi_power_button_sx = ACPI_POWER_BUTTON_DEFAULT_SX;
482 sc->acpi_sleep_button_sx = ACPI_SLEEP_BUTTON_DEFAULT_SX;
483 sc->acpi_lid_switch_sx = ACPI_LID_SWITCH_DEFAULT_SX;
484 sc->acpi_standby_sx = ACPI_STATE_S1;
485 sc->acpi_suspend_sx = ACPI_STATE_S3;
486
487 acpi_enable_fixed_events(sc);
488
489 /*
490 * Scan the namespace and attach/initialise children.
491 */
492#ifdef ACPI_DEBUGGER
493 debugpoint = getenv("debug.acpi.debugger");
494 if (debugpoint) {
495 if (!strcmp(debugpoint, "probe"))
496 acpi_EnterDebugger();
497 freeenv(debugpoint);
498 }
499#endif
500
501 /* Register our shutdown handlers */
502 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc,
503 SHUTDOWN_PRI_LAST);
504 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
505 SHUTDOWN_PRI_LAST);
506
507 /*
508 * Register our acpi event handlers.
509 * XXX should be configurable eg. via userland policy manager.
510 */
511 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
512 sc, ACPI_EVENT_PRI_LAST);
513 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
514 sc, ACPI_EVENT_PRI_LAST);
515
516 /* Flag our initial states. */
517 sc->acpi_enabled = 1;
518 sc->acpi_sstate = ACPI_STATE_S0;
519 sc->acpi_sleep_disabled = 0;
520
521 /* Create the control device */
522 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
523 "acpi");
524 sc->acpi_dev_t->si_drv1 = sc;
525
526#ifdef ACPI_DEBUGGER
527 debugpoint = getenv("debug.acpi.debugger");
528 if (debugpoint) {
529 if (strcmp(debugpoint, "running") == 0)
530 acpi_EnterDebugger();
531 freeenv(debugpoint);
532 }
533#endif
534
535#ifdef ACPI_USE_THREADS
536 if ((error = acpi_task_thread_init()))
537 goto out;
538#endif
539
540 if ((error = acpi_machdep_init(dev)))
541 goto out;
542
543 /* Register ACPI again to pass the correct argument of pm_func. */
544 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
545
546 if (!acpi_disabled("bus"))
547 acpi_probe_children(dev);
548
549 error = 0;
550
551 out:
552 ACPI_UNLOCK;
553 return_VALUE (error);
554}
555
556/*
557 * Handle a new device being added
558 */
559static device_t
560acpi_add_child(device_t bus, int order, const char *name, int unit)
561{
562 struct acpi_device *ad;
563 device_t child;
564
565 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
566 return (NULL);
567
568 resource_list_init(&ad->ad_rl);
569
570 child = device_add_child_ordered(bus, order, name, unit);
571 if (child != NULL)
572 device_set_ivars(child, ad);
573 return (child);
574}
575
576static int
577acpi_print_child(device_t bus, device_t child)
578{
579 struct acpi_device *adev = device_get_ivars(child);
580 struct resource_list *rl = &adev->ad_rl;
581 int retval = 0;
582
583 retval += bus_print_child_header(bus, child);
584 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
585 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
586 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
587 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
588 retval += bus_print_child_footer(bus, child);
589
590 return (retval);
591}
592
593
594/*
595 * Handle per-device ivars
596 */
597static int
598acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
599{
600 struct acpi_device *ad;
601
602 if ((ad = device_get_ivars(child)) == NULL) {
603 printf("device has no ivars\n");
604 return (ENOENT);
605 }
606
607 /* ACPI and ISA compatibility ivars */
608 switch(index) {
609 case ACPI_IVAR_HANDLE:
610 *(ACPI_HANDLE *)result = ad->ad_handle;
611 break;
612 case ACPI_IVAR_MAGIC:
613 *(int *)result = ad->ad_magic;
614 break;
615 case ACPI_IVAR_PRIVATE:
616 *(void **)result = ad->ad_private;
617 break;
618 case ISA_IVAR_VENDORID:
619 case ISA_IVAR_SERIAL:
620 case ISA_IVAR_COMPATID:
621 *(int *)result = -1;
622 break;
623 case ISA_IVAR_LOGICALID:
624 *(int *)result = acpi_isa_get_logicalid(child);
625 break;
626 default:
627 return (ENOENT);
628 }
629
630 return (0);
631}
632
633static int
634acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
635{
636 struct acpi_device *ad;
637
638 if ((ad = device_get_ivars(child)) == NULL) {
639 printf("device has no ivars\n");
640 return (ENOENT);
641 }
642
643 switch(index) {
644 case ACPI_IVAR_HANDLE:
645 ad->ad_handle = (ACPI_HANDLE)value;
646 break;
647 case ACPI_IVAR_MAGIC:
648 ad->ad_magic = (int)value;
649 break;
650 case ACPI_IVAR_PRIVATE:
651 ad->ad_private = (void *)value;
652 break;
653 default:
654 panic("bad ivar write request (%d)", index);
655 return (ENOENT);
656 }
657
658 return (0);
659}
660
661ACPI_HANDLE
662acpi_get_handle(device_t dev)
663{
664 uintptr_t up;
665 ACPI_HANDLE h;
666
667 if (BUS_READ_IVAR(device_get_parent(dev), dev, ACPI_IVAR_HANDLE, &up))
668 return(NULL);
669 h = (ACPI_HANDLE)up;
670 return (h);
671}
672
673int
674acpi_set_handle(device_t dev, ACPI_HANDLE h)
675{
676 uintptr_t up;
677
678 up = (uintptr_t)h;
679 return (BUS_WRITE_IVAR(device_get_parent(dev), dev, ACPI_IVAR_HANDLE, up));
680}
681
682int
683acpi_get_magic(device_t dev)
684{
685 uintptr_t up;
686 int m;
687
688 if (BUS_READ_IVAR(device_get_parent(dev), dev, ACPI_IVAR_MAGIC, &up))
689 return(0);
690 m = (int)up;
691 return (m);
692}
693
694int
695acpi_set_magic(device_t dev, int m)
696{
697 uintptr_t up;
698
699 up = (uintptr_t)m;
700 return (BUS_WRITE_IVAR(device_get_parent(dev), dev, ACPI_IVAR_MAGIC, up));
701}
702
703void *
704acpi_get_private(device_t dev)
705{
706 uintptr_t up;
707 void *p;
708
709 if (BUS_READ_IVAR(device_get_parent(dev), dev, ACPI_IVAR_PRIVATE, &up))
710 return (NULL);
711 p = (void *)up;
712 return (p);
713}
714
715int
716acpi_set_private(device_t dev, void *p)
717{
718 uintptr_t up;
719
720 up = (uintptr_t)p;
721 return (BUS_WRITE_IVAR(device_get_parent(dev), dev, ACPI_IVAR_PRIVATE, up));
722}
723
724ACPI_OBJECT_TYPE
725acpi_get_type(device_t dev)
726{
727 ACPI_HANDLE h;
728 ACPI_OBJECT_TYPE t;
729
730 if ((h = acpi_get_handle(dev)) == NULL)
731 return (ACPI_TYPE_NOT_FOUND);
732 if (AcpiGetType(h, &t) != AE_OK)
733 return (ACPI_TYPE_NOT_FOUND);
734 return (t);
735}
736
737/*
738 * Handle child resource allocation/removal
739 */
740static int
741acpi_set_resource(device_t dev, device_t child, int type, int rid,
742 u_long start, u_long count)
743{
744 struct acpi_device *ad = device_get_ivars(child);
745 struct resource_list *rl = &ad->ad_rl;
746
747 resource_list_add(rl, type, rid, start, start + count -1, count);
748
749 return(0);
750}
751
752static int
753acpi_get_resource(device_t dev, device_t child, int type, int rid,
754 u_long *startp, u_long *countp)
755{
756 struct acpi_device *ad = device_get_ivars(child);
757 struct resource_list *rl = &ad->ad_rl;
758 struct resource_list_entry *rle;
759
760 rle = resource_list_find(rl, type, rid);
761 if (!rle)
762 return(ENOENT);
763
764 if (startp)
765 *startp = rle->start;
766 if (countp)
767 *countp = rle->count;
768
769 return (0);
770}
771
772static struct resource *
773acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
774 u_long start, u_long end, u_long count, u_int flags)
775{
776 struct acpi_device *ad = device_get_ivars(child);
777 struct resource_list *rl = &ad->ad_rl;
778
779 return (resource_list_alloc(rl, bus, child, type, rid, start, end, count,
780 flags));
781}
782
783static int
784acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r)
785{
786 struct acpi_device *ad = device_get_ivars(child);
787 struct resource_list *rl = &ad->ad_rl;
788
789 return (resource_list_release(rl, bus, child, type, rid, r));
790}
791
792/* Allocate an IO port or memory resource, given its GAS. */
793struct resource *
794acpi_bus_alloc_gas(device_t dev, int *rid, ACPI_GENERIC_ADDRESS *gas)
795{
796 int type;
797
798 if (gas == NULL || !ACPI_VALID_ADDRESS(gas->Address) ||
799 gas->RegisterBitWidth < 8)
800 return (NULL);
801
802 switch (gas->AddressSpaceId) {
803 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
804 type = SYS_RES_MEMORY;
805 break;
806 case ACPI_ADR_SPACE_SYSTEM_IO:
807 type = SYS_RES_IOPORT;
808 break;
809 default:
810 return (NULL);
811 }
812
813 bus_set_resource(dev, type, *rid, gas->Address, gas->RegisterBitWidth / 8);
814 return (bus_alloc_resource(dev, type, rid, 0, ~0, 1, RF_ACTIVE));
815}
816
817/*
818 * Handle ISA-like devices probing for a PnP ID to match.
819 */
820#define PNP_EISAID(s) \
821 ((((s[0] - '@') & 0x1f) << 2) \
822 | (((s[1] - '@') & 0x18) >> 3) \
823 | (((s[1] - '@') & 0x07) << 13) \
824 | (((s[2] - '@') & 0x1f) << 8) \
825 | (PNP_HEXTONUM(s[4]) << 16) \
826 | (PNP_HEXTONUM(s[3]) << 20) \
827 | (PNP_HEXTONUM(s[6]) << 24) \
828 | (PNP_HEXTONUM(s[5]) << 28))
829
830static uint32_t
831acpi_isa_get_logicalid(device_t dev)
832{
833 ACPI_DEVICE_INFO *devinfo;
834 ACPI_BUFFER buf;
835 ACPI_HANDLE h;
836 ACPI_STATUS error;
837 u_int32_t pnpid;
838 ACPI_LOCK_DECL;
839
840 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
841
842 pnpid = 0;
843 buf.Pointer = NULL;
844 buf.Length = ACPI_ALLOCATE_BUFFER;
845
846 ACPI_LOCK;
847
848 /* Fetch and validate the HID. */
849 if ((h = acpi_get_handle(dev)) == NULL)
850 goto out;
851 error = AcpiGetObjectInfo(h, &buf);
852 if (ACPI_FAILURE(error))
853 goto out;
854 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
855
856 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
857 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
858
859out:
860 if (buf.Pointer != NULL)
861 AcpiOsFree(buf.Pointer);
862 ACPI_UNLOCK;
863 return_VALUE (pnpid);
864}
865
866static int
867acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
868{
869 ACPI_DEVICE_INFO *devinfo;
870 ACPI_BUFFER buf;
871 ACPI_HANDLE h;
872 ACPI_STATUS error;
873 uint32_t *pnpid;
874 int valid, i;
875 ACPI_LOCK_DECL;
876
877 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
878
879 pnpid = cids;
880 valid = 0;
881 buf.Pointer = NULL;
882 buf.Length = ACPI_ALLOCATE_BUFFER;
883
884 ACPI_LOCK;
885
886 /* Fetch and validate the CID */
887 if ((h = acpi_get_handle(dev)) == NULL)
888 goto out;
889 error = AcpiGetObjectInfo(h, &buf);
890 if (ACPI_FAILURE(error))
891 goto out;
892 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
893 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
894 goto out;
895
896 if (devinfo->CompatibilityId.Count < count)
897 count = devinfo->CompatibilityId.Count;
898 for (i = 0; i < count; i++) {
899 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
900 continue;
901 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
902 valid++;
903 }
904
905out:
906 if (buf.Pointer != NULL)
907 AcpiOsFree(buf.Pointer);
908 ACPI_UNLOCK;
909 return_VALUE (valid);
910}
911
912static int
913acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
914{
915 int result, cid_count, i;
916 uint32_t lid, cids[8];
917
918 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
919
920 /*
921 * ISA-style drivers attached to ACPI may persist and
922 * probe manually if we return ENOENT. We never want
923 * that to happen, so don't ever return it.
924 */
925 result = ENXIO;
926
927 /* Scan the supplied IDs for a match */
928 lid = acpi_isa_get_logicalid(child);
929 cid_count = acpi_isa_get_compatid(child, cids, 8);
930 while (ids && ids->ip_id) {
931 if (lid == ids->ip_id) {
932 result = 0;
933 goto out;
934 }
935 for (i = 0; i < cid_count; i++) {
936 if (cids[i] == ids->ip_id) {
937 result = 0;
938 goto out;
939 }
940 }
941 ids++;
942 }
943
944 out:
945 return_VALUE (result);
946}
947
948/*
949 * Scan relevant portions of the ACPI namespace and attach child devices.
950 *
951 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and
952 * \_SB_ scopes, and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
953 */
954static void
955acpi_probe_children(device_t bus)
956{
957 ACPI_HANDLE parent;
958 ACPI_STATUS status;
959 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
960 int i;
961
962 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
963 ACPI_ASSERTLOCK;
964
965 /* Create any static children by calling device identify methods. */
966 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
967 bus_generic_probe(bus);
968
969 /*
970 * Scan the namespace and insert placeholders for all the devices that
971 * we find.
972 *
973 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
974 * we want to create nodes for all devices, not just those that are
975 * currently present. (This assumes that we don't want to create/remove
976 * devices as they appear, which might be smarter.)
977 */
978 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
979 for (i = 0; scopes[i] != NULL; i++) {
980 status = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent);
981 if (ACPI_SUCCESS(status)) {
982 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child,
983 bus, NULL);
984 }
985 }
986
987 /*
988 * Scan all of the child devices we have created and let them probe/attach.
989 */
990 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
991 bus_generic_attach(bus);
992
993 /*
994 * Some of these children may have attached others as part of their attach
995 * process (eg. the root PCI bus driver), so rescan.
996 */
997 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
998 bus_generic_attach(bus);
999
1000 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1001 return_VOID;
1002}
1003
1004/*
1005 * Evaluate a child device and determine whether we might attach a device to
1006 * it.
1007 */
1008static ACPI_STATUS
1009acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1010{
1011 ACPI_OBJECT_TYPE type;
1012 device_t child, bus = (device_t)context;
1013
1014 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1015
1016 /* Skip this device if we think we'll have trouble with it. */
1017 if (acpi_avoid(handle))
1018 return_ACPI_STATUS (AE_OK);
1019
1020 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1021 switch(type) {
1022 case ACPI_TYPE_DEVICE:
1023 case ACPI_TYPE_PROCESSOR:
1024 case ACPI_TYPE_THERMAL:
1025 case ACPI_TYPE_POWER:
1026 if (acpi_disabled("children"))
1027 break;
1028
1029 /*
1030 * Create a placeholder device for this node. Sort the placeholder
1031 * so that the probe/attach passes will run breadth-first.
1032 */
1033 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n",
1034 acpi_name(handle)));
1035 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1);
1036 if (child == NULL)
1037 break;
1038 acpi_set_handle(child, handle);
1039
1040 /*
1041 * Check that the device is present. If it's not present,
1042 * leave it disabled (so that we have a device_t attached to
1043 * the handle, but we don't probe it).
1044 */
1045 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1046 device_disable(child);
1047 break;
1048 }
1049
1050 /*
1051 * Get the device's resource settings and attach them.
1052 * Note that if the device has _PRS but no _CRS, we need
1053 * to decide when it's appropriate to try to configure the
1054 * device. Ignore the return value here; it's OK for the
1055 * device not to have any resources.
1056 */
1057 acpi_parse_resources(child, handle, &acpi_res_parse_set);
1058
1059 /* If we're debugging, probe/attach now rather than later */
1060 ACPI_DEBUG_EXEC(device_probe_and_attach(child));
1061 break;
1062 }
1063 }
1064
1065 return_ACPI_STATUS (AE_OK);
1066}
1067
1068static void
1069acpi_shutdown_pre_sync(void *arg, int howto)
1070{
1071 struct acpi_softc *sc = arg;
1072
1073 ACPI_ASSERTLOCK;
1074
1075 /*
1076 * Disable all ACPI events before soft off, otherwise the system
1077 * will be turned on again on some laptops.
1078 *
1079 * XXX this should probably be restricted to masking some events just
1080 * before powering down, since we may still need ACPI during the
1081 * shutdown process.
1082 */
1083 if (sc->acpi_disable_on_poweroff)
1084 acpi_Disable(sc);
1085}
1086
1087static void
1088acpi_shutdown_final(void *arg, int howto)
1089{
1090 ACPI_STATUS status;
1091
1092 ACPI_ASSERTLOCK;
1093
1094 if ((howto & RB_POWEROFF) != 0) {
1095 printf("Powering system off using ACPI\n");
1096 status = AcpiEnterSleepStatePrep(acpi_off_state);
1097 if (ACPI_FAILURE(status)) {
1098 printf("AcpiEnterSleepStatePrep failed - %s\n",
1099 AcpiFormatException(status));
1100 return;
1101 }
1102 ACPI_DISABLE_IRQS();
1103 status = AcpiEnterSleepState(acpi_off_state);
1104 if (ACPI_FAILURE(status)) {
1105 printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1106 } else {
1107 DELAY(1000000);
1108 printf("ACPI power-off failed - timeout\n");
1109 }
1110 } else {
1111 printf("Shutting down ACPI\n");
1112 AcpiTerminate();
1113 }
1114}
1115
1116static void
1117acpi_enable_fixed_events(struct acpi_softc *sc)
1118{
1119 static int first_time = 1;
1120
1121 ACPI_ASSERTLOCK;
1122
1123 /* Enable and clear fixed events and install handlers. */
1124 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) {
1125 AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, 0);
1126 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1127 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
| 30 */
31
32#include "opt_acpi.h"
33#include <sys/param.h>
34#include <sys/kernel.h>
35#include <sys/proc.h>
36#include <sys/fcntl.h>
37#include <sys/malloc.h>
38#include <sys/bus.h>
39#include <sys/conf.h>
40#include <sys/ioccom.h>
41#include <sys/reboot.h>
42#include <sys/sysctl.h>
43#include <sys/ctype.h>
44#include <sys/linker.h>
45#include <sys/power.h>
46#include <sys/sbuf.h>
47
48#include <machine/clock.h>
49#include <machine/resource.h>
50#include <machine/bus.h>
51#include <sys/rman.h>
52#include <isa/isavar.h>
53
54#include "acpi.h"
55#include <dev/acpica/acpivar.h>
56#include <dev/acpica/acpiio.h>
57#include <contrib/dev/acpica/acnamesp.h>
58
59MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
60
61/* Hooks for the ACPI CA debugging infrastructure */
62#define _COMPONENT ACPI_BUS
63ACPI_MODULE_NAME("ACPI")
64
65static d_open_t acpiopen;
66static d_close_t acpiclose;
67static d_ioctl_t acpiioctl;
68
69#define CDEV_MAJOR 152
70static struct cdevsw acpi_cdevsw = {
71 .d_open = acpiopen,
72 .d_close = acpiclose,
73 .d_ioctl = acpiioctl,
74 .d_name = "acpi",
75 .d_maj = CDEV_MAJOR,
76};
77
78static const char* sleep_state_names[] = {
79 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
80
81/* this has to be static, as the softc is gone when we need it */
82static int acpi_off_state = ACPI_STATE_S5;
83
84#if __FreeBSD_version >= 500000
85struct mtx acpi_mutex;
86#endif
87
88static int acpi_modevent(struct module *mod, int event, void *junk);
89static void acpi_identify(driver_t *driver, device_t parent);
90static int acpi_probe(device_t dev);
91static int acpi_attach(device_t dev);
92static device_t acpi_add_child(device_t bus, int order, const char *name,
93 int unit);
94static int acpi_print_child(device_t bus, device_t child);
95static int acpi_read_ivar(device_t dev, device_t child, int index,
96 uintptr_t *result);
97static int acpi_write_ivar(device_t dev, device_t child, int index,
98 uintptr_t value);
99static int acpi_set_resource(device_t dev, device_t child, int type,
100 int rid, u_long start, u_long count);
101static int acpi_get_resource(device_t dev, device_t child, int type,
102 int rid, u_long *startp, u_long *countp);
103static struct resource *acpi_alloc_resource(device_t bus, device_t child,
104 int type, int *rid, u_long start, u_long end,
105 u_long count, u_int flags);
106static int acpi_release_resource(device_t bus, device_t child, int type,
107 int rid, struct resource *r);
108static uint32_t acpi_isa_get_logicalid(device_t dev);
109static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
110static int acpi_isa_pnp_probe(device_t bus, device_t child,
111 struct isa_pnp_id *ids);
112static void acpi_probe_children(device_t bus);
113static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
114 void *context, void **status);
115static void acpi_shutdown_pre_sync(void *arg, int howto);
116static void acpi_shutdown_final(void *arg, int howto);
117static void acpi_enable_fixed_events(struct acpi_softc *sc);
118static void acpi_system_eventhandler_sleep(void *arg, int state);
119static void acpi_system_eventhandler_wakeup(void *arg, int state);
120static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
121static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
122static int acpi_pm_func(u_long cmd, void *arg, ...);
123
124static device_method_t acpi_methods[] = {
125 /* Device interface */
126 DEVMETHOD(device_identify, acpi_identify),
127 DEVMETHOD(device_probe, acpi_probe),
128 DEVMETHOD(device_attach, acpi_attach),
129 DEVMETHOD(device_detach, bus_generic_detach),
130 DEVMETHOD(device_shutdown, bus_generic_shutdown),
131 DEVMETHOD(device_suspend, bus_generic_suspend),
132 DEVMETHOD(device_resume, bus_generic_resume),
133
134 /* Bus interface */
135 DEVMETHOD(bus_add_child, acpi_add_child),
136 DEVMETHOD(bus_print_child, acpi_print_child),
137 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
138 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
139 DEVMETHOD(bus_set_resource, acpi_set_resource),
140 DEVMETHOD(bus_get_resource, acpi_get_resource),
141 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
142 DEVMETHOD(bus_release_resource, acpi_release_resource),
143 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
144 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
145 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
146 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
147 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
148
149 /* ISA emulation */
150 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
151
152 {0, 0}
153};
154
155static driver_t acpi_driver = {
156 "acpi",
157 acpi_methods,
158 sizeof(struct acpi_softc),
159};
160
161static devclass_t acpi_devclass;
162DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
163MODULE_VERSION(acpi, 100);
164
165SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RW, NULL, "ACPI debugging");
166static char acpi_ca_version[12];
167SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
168 acpi_ca_version, 0, "Version of Intel ACPI-CA");
169
170/*
171 * ACPI can only be loaded as a module by the loader; activating it after
172 * system bootstrap time is not useful, and can be fatal to the system.
173 * It also cannot be unloaded, since the entire system bus heirarchy hangs
174 * off it.
175 */
176static int
177acpi_modevent(struct module *mod, int event, void *junk)
178{
179 switch(event) {
180 case MOD_LOAD:
181 if (!cold) {
182 printf("The ACPI driver cannot be loaded after boot.\n");
183 return (EPERM);
184 }
185 break;
186 case MOD_UNLOAD:
187 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
188 return (EBUSY);
189 break;
190 default:
191 break;
192 }
193 return (0);
194}
195
196/*
197 * Perform early initialization.
198 */
199ACPI_STATUS
200acpi_Startup(void)
201{
202#ifdef ACPI_DEBUGGER
203 char *debugpoint;
204#endif
205 static int error, started = 0;
206
207 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
208
209 if (started)
210 return_VALUE(error);
211 started = 1;
212
213#if __FreeBSD_version >= 500000
214 /* Initialise the ACPI mutex */
215 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
216#endif
217
218 /* Start up the ACPI CA subsystem. */
219#ifdef ACPI_DEBUGGER
220 debugpoint = getenv("debug.acpi.debugger");
221 if (debugpoint) {
222 if (!strcmp(debugpoint, "init"))
223 acpi_EnterDebugger();
224 freeenv(debugpoint);
225 }
226#endif
227 if (ACPI_FAILURE(error = AcpiInitializeSubsystem())) {
228 printf("ACPI: initialisation failed: %s\n", AcpiFormatException(error));
229 return_VALUE(error);
230 }
231#ifdef ACPI_DEBUGGER
232 debugpoint = getenv("debug.acpi.debugger");
233 if (debugpoint) {
234 if (!strcmp(debugpoint, "tables"))
235 acpi_EnterDebugger();
236 freeenv(debugpoint);
237 }
238#endif
239
240 if (ACPI_FAILURE(error = AcpiLoadTables())) {
241 printf("ACPI: table load failed: %s\n", AcpiFormatException(error));
242 return_VALUE(error);
243 }
244 return_VALUE(AE_OK);
245}
246
247/*
248 * Detect ACPI, perform early initialisation
249 */
250static void
251acpi_identify(driver_t *driver, device_t parent)
252{
253 device_t child;
254
255 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
256
257 if (!cold)
258 return_VOID;
259
260 /* Check that we haven't been disabled with a hint. */
261 if (resource_disabled("acpi", 0))
262 return_VOID;
263
264 snprintf(acpi_ca_version, sizeof(acpi_ca_version), "0x%x",
265 ACPI_CA_VERSION);
266
267 /* Make sure we're not being doubly invoked. */
268 if (device_find_child(parent, "acpi", 0) != NULL)
269 return_VOID;
270
271 /* Initialize ACPI-CA. */
272 if (ACPI_FAILURE(acpi_Startup()))
273 return_VOID;
274
275 /* Attach the actual ACPI device. */
276 if ((child = BUS_ADD_CHILD(parent, 0, "acpi", 0)) == NULL) {
277 device_printf(parent, "ACPI: could not attach\n");
278 return_VOID;
279 }
280}
281
282/*
283 * Fetch some descriptive data from ACPI to put in our attach message
284 */
285static int
286acpi_probe(device_t dev)
287{
288 ACPI_TABLE_HEADER th;
289 char buf[20];
290 int error;
291 struct sbuf sb;
292 ACPI_STATUS status;
293 ACPI_LOCK_DECL;
294
295 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
296
297 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
298 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
299
300 device_printf(dev, "Other PM system enabled.\n");
301 return_VALUE(ENXIO);
302 }
303
304 ACPI_LOCK;
305
306 if (ACPI_FAILURE(status = AcpiGetTableHeader(ACPI_TABLE_XSDT, 1, &th))) {
307 device_printf(dev, "couldn't get XSDT header: %s\n",
308 AcpiFormatException(status));
309 error = ENXIO;
310 } else {
311 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
312 sbuf_bcat(&sb, th.OemId, 6);
313 sbuf_trim(&sb);
314 sbuf_putc(&sb, ' ');
315 sbuf_bcat(&sb, th.OemTableId, 8);
316 sbuf_trim(&sb);
317 sbuf_finish(&sb);
318 device_set_desc_copy(dev, sbuf_data(&sb));
319 sbuf_delete(&sb);
320 error = 0;
321 }
322 ACPI_UNLOCK;
323 return_VALUE(error);
324}
325
326static int
327acpi_attach(device_t dev)
328{
329 struct acpi_softc *sc;
330 ACPI_STATUS status;
331 int error;
332 UINT32 flags;
333 char *env;
334#ifdef ACPI_DEBUGGER
335 char *debugpoint;
336#endif
337 ACPI_LOCK_DECL;
338
339 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
340 ACPI_LOCK;
341 sc = device_get_softc(dev);
342 bzero(sc, sizeof(*sc));
343 sc->acpi_dev = dev;
344
345#ifdef ACPI_DEBUGGER
346 debugpoint = getenv("debug.acpi.debugger");
347 if (debugpoint) {
348 if (!strcmp(debugpoint, "spaces"))
349 acpi_EnterDebugger();
350 freeenv(debugpoint);
351 }
352#endif
353
354 /* Install the default address space handlers. */
355 error = ENXIO;
356 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
357 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
358 if (ACPI_FAILURE(status)) {
359 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
360 AcpiFormatException(status));
361 goto out;
362 }
363 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
364 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
365 if (ACPI_FAILURE(status)) {
366 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
367 AcpiFormatException(status));
368 goto out;
369 }
370 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
371 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
372 if (ACPI_FAILURE(status)) {
373 device_printf(dev, "could not initialise PciConfig handler: %s\n",
374 AcpiFormatException(status));
375 goto out;
376 }
377
378 /*
379 * Bring ACPI fully online.
380 *
381 * Note that some systems (specifically, those with namespace evaluation
382 * issues that require the avoidance of parts of the namespace) must
383 * avoid running _INI and _STA on everything, as well as dodging the final
384 * object init pass.
385 *
386 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
387 *
388 * XXX We should arrange for the object init pass after we have attached
389 * all our child devices, but on many systems it works here.
390 */
391#ifdef ACPI_DEBUGGER
392 debugpoint = getenv("debug.acpi.debugger");
393 if (debugpoint) {
394 if (!strcmp(debugpoint, "enable"))
395 acpi_EnterDebugger();
396 freeenv(debugpoint);
397 }
398#endif
399 flags = 0;
400 if (testenv("debug.acpi.avoid"))
401 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
402 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
403 device_printf(dev, "Could not enable ACPI: %s\n",
404 AcpiFormatException(status));
405 goto out;
406 }
407
408 /*
409 * Call the ECDT probe function to provide EC functionality before
410 * the namespace has been evaluated.
411 */
412 acpi_ec_ecdt_probe(dev);
413
414 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
415 device_printf(dev, "Could not initialize ACPI objects: %s\n",
416 AcpiFormatException(status));
417 goto out;
418 }
419
420 /*
421 * Setup our sysctl tree.
422 *
423 * XXX: This doesn't check to make sure that none of these fail.
424 */
425 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
426 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
427 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
428 device_get_name(dev), CTLFLAG_RD, 0, "");
429 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
430 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
431 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
432 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
433 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
434 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
435 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
436 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
437 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
438 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
439 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
440 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
441 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
442 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
443 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
444 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
445 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
446 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
447 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
448 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW,
449 &sc->acpi_sleep_delay, 0, "sleep delay");
450 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
451 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW,
452 &sc->acpi_s4bios, 0, "S4BIOS mode");
453 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
454 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW,
455 &sc->acpi_verbose, 0, "verbose mode");
456 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
457 OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW,
458 &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff");
459
460 /*
461 * Default to 5 seconds before sleeping to give some machines time to
462 * stabilize.
463 */
464 sc->acpi_sleep_delay = 5;
465 sc->acpi_disable_on_poweroff = 1;
466 if (bootverbose)
467 sc->acpi_verbose = 1;
468 if ((env = getenv("hw.acpi.verbose")) && strcmp(env, "0")) {
469 sc->acpi_verbose = 1;
470 freeenv(env);
471 }
472
473 /* Only enable S4BIOS by default if the FACS says it is available. */
474 if (AcpiGbl_FACS->S4Bios_f != 0)
475 sc->acpi_s4bios = 1;
476
477 /*
478 * Dispatch the default sleep state to devices.
479 * TBD: should be configured from userland policy manager.
480 */
481 sc->acpi_power_button_sx = ACPI_POWER_BUTTON_DEFAULT_SX;
482 sc->acpi_sleep_button_sx = ACPI_SLEEP_BUTTON_DEFAULT_SX;
483 sc->acpi_lid_switch_sx = ACPI_LID_SWITCH_DEFAULT_SX;
484 sc->acpi_standby_sx = ACPI_STATE_S1;
485 sc->acpi_suspend_sx = ACPI_STATE_S3;
486
487 acpi_enable_fixed_events(sc);
488
489 /*
490 * Scan the namespace and attach/initialise children.
491 */
492#ifdef ACPI_DEBUGGER
493 debugpoint = getenv("debug.acpi.debugger");
494 if (debugpoint) {
495 if (!strcmp(debugpoint, "probe"))
496 acpi_EnterDebugger();
497 freeenv(debugpoint);
498 }
499#endif
500
501 /* Register our shutdown handlers */
502 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc,
503 SHUTDOWN_PRI_LAST);
504 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
505 SHUTDOWN_PRI_LAST);
506
507 /*
508 * Register our acpi event handlers.
509 * XXX should be configurable eg. via userland policy manager.
510 */
511 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
512 sc, ACPI_EVENT_PRI_LAST);
513 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
514 sc, ACPI_EVENT_PRI_LAST);
515
516 /* Flag our initial states. */
517 sc->acpi_enabled = 1;
518 sc->acpi_sstate = ACPI_STATE_S0;
519 sc->acpi_sleep_disabled = 0;
520
521 /* Create the control device */
522 sc->acpi_dev_t = make_dev(&acpi_cdevsw, 0, UID_ROOT, GID_WHEEL, 0644,
523 "acpi");
524 sc->acpi_dev_t->si_drv1 = sc;
525
526#ifdef ACPI_DEBUGGER
527 debugpoint = getenv("debug.acpi.debugger");
528 if (debugpoint) {
529 if (strcmp(debugpoint, "running") == 0)
530 acpi_EnterDebugger();
531 freeenv(debugpoint);
532 }
533#endif
534
535#ifdef ACPI_USE_THREADS
536 if ((error = acpi_task_thread_init()))
537 goto out;
538#endif
539
540 if ((error = acpi_machdep_init(dev)))
541 goto out;
542
543 /* Register ACPI again to pass the correct argument of pm_func. */
544 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
545
546 if (!acpi_disabled("bus"))
547 acpi_probe_children(dev);
548
549 error = 0;
550
551 out:
552 ACPI_UNLOCK;
553 return_VALUE (error);
554}
555
556/*
557 * Handle a new device being added
558 */
559static device_t
560acpi_add_child(device_t bus, int order, const char *name, int unit)
561{
562 struct acpi_device *ad;
563 device_t child;
564
565 if ((ad = malloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
566 return (NULL);
567
568 resource_list_init(&ad->ad_rl);
569
570 child = device_add_child_ordered(bus, order, name, unit);
571 if (child != NULL)
572 device_set_ivars(child, ad);
573 return (child);
574}
575
576static int
577acpi_print_child(device_t bus, device_t child)
578{
579 struct acpi_device *adev = device_get_ivars(child);
580 struct resource_list *rl = &adev->ad_rl;
581 int retval = 0;
582
583 retval += bus_print_child_header(bus, child);
584 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
585 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
586 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
587 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
588 retval += bus_print_child_footer(bus, child);
589
590 return (retval);
591}
592
593
594/*
595 * Handle per-device ivars
596 */
597static int
598acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
599{
600 struct acpi_device *ad;
601
602 if ((ad = device_get_ivars(child)) == NULL) {
603 printf("device has no ivars\n");
604 return (ENOENT);
605 }
606
607 /* ACPI and ISA compatibility ivars */
608 switch(index) {
609 case ACPI_IVAR_HANDLE:
610 *(ACPI_HANDLE *)result = ad->ad_handle;
611 break;
612 case ACPI_IVAR_MAGIC:
613 *(int *)result = ad->ad_magic;
614 break;
615 case ACPI_IVAR_PRIVATE:
616 *(void **)result = ad->ad_private;
617 break;
618 case ISA_IVAR_VENDORID:
619 case ISA_IVAR_SERIAL:
620 case ISA_IVAR_COMPATID:
621 *(int *)result = -1;
622 break;
623 case ISA_IVAR_LOGICALID:
624 *(int *)result = acpi_isa_get_logicalid(child);
625 break;
626 default:
627 return (ENOENT);
628 }
629
630 return (0);
631}
632
633static int
634acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
635{
636 struct acpi_device *ad;
637
638 if ((ad = device_get_ivars(child)) == NULL) {
639 printf("device has no ivars\n");
640 return (ENOENT);
641 }
642
643 switch(index) {
644 case ACPI_IVAR_HANDLE:
645 ad->ad_handle = (ACPI_HANDLE)value;
646 break;
647 case ACPI_IVAR_MAGIC:
648 ad->ad_magic = (int)value;
649 break;
650 case ACPI_IVAR_PRIVATE:
651 ad->ad_private = (void *)value;
652 break;
653 default:
654 panic("bad ivar write request (%d)", index);
655 return (ENOENT);
656 }
657
658 return (0);
659}
660
661ACPI_HANDLE
662acpi_get_handle(device_t dev)
663{
664 uintptr_t up;
665 ACPI_HANDLE h;
666
667 if (BUS_READ_IVAR(device_get_parent(dev), dev, ACPI_IVAR_HANDLE, &up))
668 return(NULL);
669 h = (ACPI_HANDLE)up;
670 return (h);
671}
672
673int
674acpi_set_handle(device_t dev, ACPI_HANDLE h)
675{
676 uintptr_t up;
677
678 up = (uintptr_t)h;
679 return (BUS_WRITE_IVAR(device_get_parent(dev), dev, ACPI_IVAR_HANDLE, up));
680}
681
682int
683acpi_get_magic(device_t dev)
684{
685 uintptr_t up;
686 int m;
687
688 if (BUS_READ_IVAR(device_get_parent(dev), dev, ACPI_IVAR_MAGIC, &up))
689 return(0);
690 m = (int)up;
691 return (m);
692}
693
694int
695acpi_set_magic(device_t dev, int m)
696{
697 uintptr_t up;
698
699 up = (uintptr_t)m;
700 return (BUS_WRITE_IVAR(device_get_parent(dev), dev, ACPI_IVAR_MAGIC, up));
701}
702
703void *
704acpi_get_private(device_t dev)
705{
706 uintptr_t up;
707 void *p;
708
709 if (BUS_READ_IVAR(device_get_parent(dev), dev, ACPI_IVAR_PRIVATE, &up))
710 return (NULL);
711 p = (void *)up;
712 return (p);
713}
714
715int
716acpi_set_private(device_t dev, void *p)
717{
718 uintptr_t up;
719
720 up = (uintptr_t)p;
721 return (BUS_WRITE_IVAR(device_get_parent(dev), dev, ACPI_IVAR_PRIVATE, up));
722}
723
724ACPI_OBJECT_TYPE
725acpi_get_type(device_t dev)
726{
727 ACPI_HANDLE h;
728 ACPI_OBJECT_TYPE t;
729
730 if ((h = acpi_get_handle(dev)) == NULL)
731 return (ACPI_TYPE_NOT_FOUND);
732 if (AcpiGetType(h, &t) != AE_OK)
733 return (ACPI_TYPE_NOT_FOUND);
734 return (t);
735}
736
737/*
738 * Handle child resource allocation/removal
739 */
740static int
741acpi_set_resource(device_t dev, device_t child, int type, int rid,
742 u_long start, u_long count)
743{
744 struct acpi_device *ad = device_get_ivars(child);
745 struct resource_list *rl = &ad->ad_rl;
746
747 resource_list_add(rl, type, rid, start, start + count -1, count);
748
749 return(0);
750}
751
752static int
753acpi_get_resource(device_t dev, device_t child, int type, int rid,
754 u_long *startp, u_long *countp)
755{
756 struct acpi_device *ad = device_get_ivars(child);
757 struct resource_list *rl = &ad->ad_rl;
758 struct resource_list_entry *rle;
759
760 rle = resource_list_find(rl, type, rid);
761 if (!rle)
762 return(ENOENT);
763
764 if (startp)
765 *startp = rle->start;
766 if (countp)
767 *countp = rle->count;
768
769 return (0);
770}
771
772static struct resource *
773acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
774 u_long start, u_long end, u_long count, u_int flags)
775{
776 struct acpi_device *ad = device_get_ivars(child);
777 struct resource_list *rl = &ad->ad_rl;
778
779 return (resource_list_alloc(rl, bus, child, type, rid, start, end, count,
780 flags));
781}
782
783static int
784acpi_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r)
785{
786 struct acpi_device *ad = device_get_ivars(child);
787 struct resource_list *rl = &ad->ad_rl;
788
789 return (resource_list_release(rl, bus, child, type, rid, r));
790}
791
792/* Allocate an IO port or memory resource, given its GAS. */
793struct resource *
794acpi_bus_alloc_gas(device_t dev, int *rid, ACPI_GENERIC_ADDRESS *gas)
795{
796 int type;
797
798 if (gas == NULL || !ACPI_VALID_ADDRESS(gas->Address) ||
799 gas->RegisterBitWidth < 8)
800 return (NULL);
801
802 switch (gas->AddressSpaceId) {
803 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
804 type = SYS_RES_MEMORY;
805 break;
806 case ACPI_ADR_SPACE_SYSTEM_IO:
807 type = SYS_RES_IOPORT;
808 break;
809 default:
810 return (NULL);
811 }
812
813 bus_set_resource(dev, type, *rid, gas->Address, gas->RegisterBitWidth / 8);
814 return (bus_alloc_resource(dev, type, rid, 0, ~0, 1, RF_ACTIVE));
815}
816
817/*
818 * Handle ISA-like devices probing for a PnP ID to match.
819 */
820#define PNP_EISAID(s) \
821 ((((s[0] - '@') & 0x1f) << 2) \
822 | (((s[1] - '@') & 0x18) >> 3) \
823 | (((s[1] - '@') & 0x07) << 13) \
824 | (((s[2] - '@') & 0x1f) << 8) \
825 | (PNP_HEXTONUM(s[4]) << 16) \
826 | (PNP_HEXTONUM(s[3]) << 20) \
827 | (PNP_HEXTONUM(s[6]) << 24) \
828 | (PNP_HEXTONUM(s[5]) << 28))
829
830static uint32_t
831acpi_isa_get_logicalid(device_t dev)
832{
833 ACPI_DEVICE_INFO *devinfo;
834 ACPI_BUFFER buf;
835 ACPI_HANDLE h;
836 ACPI_STATUS error;
837 u_int32_t pnpid;
838 ACPI_LOCK_DECL;
839
840 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
841
842 pnpid = 0;
843 buf.Pointer = NULL;
844 buf.Length = ACPI_ALLOCATE_BUFFER;
845
846 ACPI_LOCK;
847
848 /* Fetch and validate the HID. */
849 if ((h = acpi_get_handle(dev)) == NULL)
850 goto out;
851 error = AcpiGetObjectInfo(h, &buf);
852 if (ACPI_FAILURE(error))
853 goto out;
854 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
855
856 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
857 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
858
859out:
860 if (buf.Pointer != NULL)
861 AcpiOsFree(buf.Pointer);
862 ACPI_UNLOCK;
863 return_VALUE (pnpid);
864}
865
866static int
867acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
868{
869 ACPI_DEVICE_INFO *devinfo;
870 ACPI_BUFFER buf;
871 ACPI_HANDLE h;
872 ACPI_STATUS error;
873 uint32_t *pnpid;
874 int valid, i;
875 ACPI_LOCK_DECL;
876
877 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
878
879 pnpid = cids;
880 valid = 0;
881 buf.Pointer = NULL;
882 buf.Length = ACPI_ALLOCATE_BUFFER;
883
884 ACPI_LOCK;
885
886 /* Fetch and validate the CID */
887 if ((h = acpi_get_handle(dev)) == NULL)
888 goto out;
889 error = AcpiGetObjectInfo(h, &buf);
890 if (ACPI_FAILURE(error))
891 goto out;
892 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
893 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
894 goto out;
895
896 if (devinfo->CompatibilityId.Count < count)
897 count = devinfo->CompatibilityId.Count;
898 for (i = 0; i < count; i++) {
899 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
900 continue;
901 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
902 valid++;
903 }
904
905out:
906 if (buf.Pointer != NULL)
907 AcpiOsFree(buf.Pointer);
908 ACPI_UNLOCK;
909 return_VALUE (valid);
910}
911
912static int
913acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
914{
915 int result, cid_count, i;
916 uint32_t lid, cids[8];
917
918 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
919
920 /*
921 * ISA-style drivers attached to ACPI may persist and
922 * probe manually if we return ENOENT. We never want
923 * that to happen, so don't ever return it.
924 */
925 result = ENXIO;
926
927 /* Scan the supplied IDs for a match */
928 lid = acpi_isa_get_logicalid(child);
929 cid_count = acpi_isa_get_compatid(child, cids, 8);
930 while (ids && ids->ip_id) {
931 if (lid == ids->ip_id) {
932 result = 0;
933 goto out;
934 }
935 for (i = 0; i < cid_count; i++) {
936 if (cids[i] == ids->ip_id) {
937 result = 0;
938 goto out;
939 }
940 }
941 ids++;
942 }
943
944 out:
945 return_VALUE (result);
946}
947
948/*
949 * Scan relevant portions of the ACPI namespace and attach child devices.
950 *
951 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and
952 * \_SB_ scopes, and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
953 */
954static void
955acpi_probe_children(device_t bus)
956{
957 ACPI_HANDLE parent;
958 ACPI_STATUS status;
959 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
960 int i;
961
962 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
963 ACPI_ASSERTLOCK;
964
965 /* Create any static children by calling device identify methods. */
966 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
967 bus_generic_probe(bus);
968
969 /*
970 * Scan the namespace and insert placeholders for all the devices that
971 * we find.
972 *
973 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
974 * we want to create nodes for all devices, not just those that are
975 * currently present. (This assumes that we don't want to create/remove
976 * devices as they appear, which might be smarter.)
977 */
978 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
979 for (i = 0; scopes[i] != NULL; i++) {
980 status = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent);
981 if (ACPI_SUCCESS(status)) {
982 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child,
983 bus, NULL);
984 }
985 }
986
987 /*
988 * Scan all of the child devices we have created and let them probe/attach.
989 */
990 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
991 bus_generic_attach(bus);
992
993 /*
994 * Some of these children may have attached others as part of their attach
995 * process (eg. the root PCI bus driver), so rescan.
996 */
997 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
998 bus_generic_attach(bus);
999
1000 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1001 return_VOID;
1002}
1003
1004/*
1005 * Evaluate a child device and determine whether we might attach a device to
1006 * it.
1007 */
1008static ACPI_STATUS
1009acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1010{
1011 ACPI_OBJECT_TYPE type;
1012 device_t child, bus = (device_t)context;
1013
1014 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1015
1016 /* Skip this device if we think we'll have trouble with it. */
1017 if (acpi_avoid(handle))
1018 return_ACPI_STATUS (AE_OK);
1019
1020 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1021 switch(type) {
1022 case ACPI_TYPE_DEVICE:
1023 case ACPI_TYPE_PROCESSOR:
1024 case ACPI_TYPE_THERMAL:
1025 case ACPI_TYPE_POWER:
1026 if (acpi_disabled("children"))
1027 break;
1028
1029 /*
1030 * Create a placeholder device for this node. Sort the placeholder
1031 * so that the probe/attach passes will run breadth-first.
1032 */
1033 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n",
1034 acpi_name(handle)));
1035 child = BUS_ADD_CHILD(bus, level * 10, NULL, -1);
1036 if (child == NULL)
1037 break;
1038 acpi_set_handle(child, handle);
1039
1040 /*
1041 * Check that the device is present. If it's not present,
1042 * leave it disabled (so that we have a device_t attached to
1043 * the handle, but we don't probe it).
1044 */
1045 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1046 device_disable(child);
1047 break;
1048 }
1049
1050 /*
1051 * Get the device's resource settings and attach them.
1052 * Note that if the device has _PRS but no _CRS, we need
1053 * to decide when it's appropriate to try to configure the
1054 * device. Ignore the return value here; it's OK for the
1055 * device not to have any resources.
1056 */
1057 acpi_parse_resources(child, handle, &acpi_res_parse_set);
1058
1059 /* If we're debugging, probe/attach now rather than later */
1060 ACPI_DEBUG_EXEC(device_probe_and_attach(child));
1061 break;
1062 }
1063 }
1064
1065 return_ACPI_STATUS (AE_OK);
1066}
1067
1068static void
1069acpi_shutdown_pre_sync(void *arg, int howto)
1070{
1071 struct acpi_softc *sc = arg;
1072
1073 ACPI_ASSERTLOCK;
1074
1075 /*
1076 * Disable all ACPI events before soft off, otherwise the system
1077 * will be turned on again on some laptops.
1078 *
1079 * XXX this should probably be restricted to masking some events just
1080 * before powering down, since we may still need ACPI during the
1081 * shutdown process.
1082 */
1083 if (sc->acpi_disable_on_poweroff)
1084 acpi_Disable(sc);
1085}
1086
1087static void
1088acpi_shutdown_final(void *arg, int howto)
1089{
1090 ACPI_STATUS status;
1091
1092 ACPI_ASSERTLOCK;
1093
1094 if ((howto & RB_POWEROFF) != 0) {
1095 printf("Powering system off using ACPI\n");
1096 status = AcpiEnterSleepStatePrep(acpi_off_state);
1097 if (ACPI_FAILURE(status)) {
1098 printf("AcpiEnterSleepStatePrep failed - %s\n",
1099 AcpiFormatException(status));
1100 return;
1101 }
1102 ACPI_DISABLE_IRQS();
1103 status = AcpiEnterSleepState(acpi_off_state);
1104 if (ACPI_FAILURE(status)) {
1105 printf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1106 } else {
1107 DELAY(1000000);
1108 printf("ACPI power-off failed - timeout\n");
1109 }
1110 } else {
1111 printf("Shutting down ACPI\n");
1112 AcpiTerminate();
1113 }
1114}
1115
1116static void
1117acpi_enable_fixed_events(struct acpi_softc *sc)
1118{
1119 static int first_time = 1;
1120
1121 ACPI_ASSERTLOCK;
1122
1123 /* Enable and clear fixed events and install handlers. */
1124 if (AcpiGbl_FADT != NULL && AcpiGbl_FADT->PwrButton == 0) {
1125 AcpiEnableEvent(ACPI_EVENT_POWER_BUTTON, 0);
1126 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1127 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
|
1759{
1760 struct acpi_softc *sc = (struct acpi_softc *)context;
1761
1762 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1763
1764 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
1765
1766 return_VALUE (ACPI_INTERRUPT_HANDLED);
1767}
1768
1769/*
1770 * XXX This is kinda ugly, and should not be here.
1771 */
1772struct acpi_staticbuf {
1773 ACPI_BUFFER buffer;
1774 char data[512];
1775};
1776
1777char *
1778acpi_name(ACPI_HANDLE handle)
1779{
1780 static struct acpi_staticbuf buf;
1781
1782 ACPI_ASSERTLOCK;
1783
1784 buf.buffer.Length = 512;
1785 buf.buffer.Pointer = &buf.data[0];
1786
1787 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer)))
1788 return (buf.buffer.Pointer);
1789
1790 return ("(unknown path)");
1791}
1792
1793/*
1794 * Debugging/bug-avoidance. Avoid trying to fetch info on various
1795 * parts of the namespace.
1796 */
1797int
1798acpi_avoid(ACPI_HANDLE handle)
1799{
1800 char *cp, *env, *np;
1801 int len;
1802
1803 np = acpi_name(handle);
1804 if (*np == '\\')
1805 np++;
1806 if ((env = getenv("debug.acpi.avoid")) == NULL)
1807 return (0);
1808
1809 /* Scan the avoid list checking for a match */
1810 cp = env;
1811 for (;;) {
1812 while ((*cp != 0) && isspace(*cp))
1813 cp++;
1814 if (*cp == 0)
1815 break;
1816 len = 0;
1817 while ((cp[len] != 0) && !isspace(cp[len]))
1818 len++;
1819 if (!strncmp(cp, np, len)) {
1820 freeenv(env);
1821 return(1);
1822 }
1823 cp += len;
1824 }
1825 freeenv(env);
1826
1827 return (0);
1828}
1829
1830/*
1831 * Debugging/bug-avoidance. Disable ACPI subsystem components.
1832 */
1833int
1834acpi_disabled(char *subsys)
1835{
1836 char *cp, *env;
1837 int len;
1838
1839 if ((env = getenv("debug.acpi.disable")) == NULL)
1840 return (0);
1841 if (!strcmp(env, "all")) {
1842 freeenv(env);
1843 return (1);
1844 }
1845
1846 /* scan the disable list checking for a match */
1847 cp = env;
1848 for (;;) {
1849 while ((*cp != 0) && isspace(*cp))
1850 cp++;
1851 if (*cp == 0)
1852 break;
1853 len = 0;
1854 while ((cp[len] != 0) && !isspace(cp[len]))
1855 len++;
1856 if (!strncmp(cp, subsys, len)) {
1857 freeenv(env);
1858 return (1);
1859 }
1860 cp += len;
1861 }
1862 freeenv(env);
1863
1864 return (0);
1865}
1866
1867/*
1868 * Device wake capability enable/disable.
1869 */
1870void
1871acpi_device_enable_wake_capability(ACPI_HANDLE h, int enable)
1872{
1873 ACPI_OBJECT_LIST ArgList;
1874 ACPI_OBJECT Arg;
1875
1876 /*
1877 * TBD: All Power Resources referenced by elements 2 through N
1878 * of the _PRW object are put into the ON state.
1879 */
1880
1881 ArgList.Count = 1;
1882 ArgList.Pointer = &Arg;
1883
1884 Arg.Type = ACPI_TYPE_INTEGER;
1885 Arg.Integer.Value = enable;
1886
1887 (void)AcpiEvaluateObject(h, "_PSW", &ArgList, NULL);
1888}
1889
1890void
1891acpi_device_enable_wake_event(ACPI_HANDLE h)
1892{
1893 struct acpi_softc *sc;
1894 ACPI_STATUS status;
1895 ACPI_BUFFER prw_buffer;
1896 ACPI_OBJECT *res;
1897
1898 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1899
1900 sc = devclass_get_softc(acpi_devclass, 0);
1901 if (sc == NULL)
1902 return;
1903
1904 /*
1905 * _PRW object is only required for devices that have the ability
1906 * to wake the system from a system sleeping state.
1907 */
1908 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
1909 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
1910 if (ACPI_FAILURE(status))
1911 return;
1912
1913 res = (ACPI_OBJECT *)prw_buffer.Pointer;
1914 if (res == NULL)
1915 return;
1916
1917 if ((res->Type != ACPI_TYPE_PACKAGE) || (res->Package.Count < 2)) {
1918 goto out;
1919 }
1920
1921 /*
1922 * The element 1 of the _PRW object:
1923 * The lowest power system sleeping state that can be entered
1924 * while still providing wake functionality.
1925 * The sleeping state being entered must be greater or equal to
1926 * the power state declared in element 1 of the _PRW object.
1927 */
1928 if (res->Package.Elements[1].Type != ACPI_TYPE_INTEGER)
1929 goto out;
1930
1931 if (sc->acpi_sstate > res->Package.Elements[1].Integer.Value)
1932 goto out;
1933
1934 /*
1935 * The element 0 of the _PRW object:
1936 */
1937 switch(res->Package.Elements[0].Type) {
1938 case ACPI_TYPE_INTEGER:
1939 /*
1940 * If the data type of this package element is numeric, then this
1941 * _PRW package element is the bit index in the GPEx_EN, in the
1942 * GPE blocks described in the FADT, of the enable bit that is
1943 * enabled for the wake event.
1944 */
1945
1946 status = AcpiEnableGpe(NULL, res->Package.Elements[0].Integer.Value,
1947 ACPI_EVENT_WAKE_ENABLE);
1948 if (ACPI_FAILURE(status))
1949 printf("%s: EnableEvent Failed\n", __func__);
1950 break;
1951 case ACPI_TYPE_PACKAGE:
1952 /*
1953 * XXX TBD
1954 *
1955 * If the data type of this package element is a package, then this
1956 * _PRW package element is itself a package containing two
1957 * elements. The first is an object reference to the GPE Block
1958 * device that contains the GPE that will be triggered by the wake
1959 * event. The second element is numeric and it contains the bit
1960 * index in the GPEx_EN, in the GPE Block referenced by the
1961 * first element in the package, of the enable bit that is enabled for
1962 * the wake event.
1963 * For example, if this field is a package then it is of the form:
1964 * Package() {\_SB.PCI0.ISA.GPE, 2}
1965 */
1966 break;
1967 default:
1968 break;
1969 }
1970
1971out:
1972 if (prw_buffer.Pointer != NULL)
1973 AcpiOsFree(prw_buffer.Pointer);
1974}
1975
1976/*
1977 * Control interface.
1978 *
1979 * We multiplex ioctls for all participating ACPI devices here. Individual
1980 * drivers wanting to be accessible via /dev/acpi should use the
1981 * register/deregister interface to make their handlers visible.
1982 */
1983struct acpi_ioctl_hook
1984{
1985 TAILQ_ENTRY(acpi_ioctl_hook) link;
1986 u_long cmd;
1987 acpi_ioctl_fn fn;
1988 void *arg;
1989};
1990
1991static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
1992static int acpi_ioctl_hooks_initted;
1993
1994/*
1995 * Register an ioctl handler.
1996 */
1997int
1998acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
1999{
2000 struct acpi_ioctl_hook *hp;
2001
2002 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
2003 return (ENOMEM);
2004 hp->cmd = cmd;
2005 hp->fn = fn;
2006 hp->arg = arg;
2007 if (acpi_ioctl_hooks_initted == 0) {
2008 TAILQ_INIT(&acpi_ioctl_hooks);
2009 acpi_ioctl_hooks_initted = 1;
2010 }
2011 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
2012 return (0);
2013}
2014
2015/*
2016 * Deregister an ioctl handler.
2017 */
2018void
2019acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
2020{
2021 struct acpi_ioctl_hook *hp;
2022
2023 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
2024 if ((hp->cmd == cmd) && (hp->fn == fn))
2025 break;
2026
2027 if (hp != NULL) {
2028 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
2029 free(hp, M_ACPIDEV);
2030 }
2031}
2032
2033static int
2034acpiopen(dev_t dev, int flag, int fmt, d_thread_t *td)
2035{
2036 return (0);
2037}
2038
2039static int
2040acpiclose(dev_t dev, int flag, int fmt, d_thread_t *td)
2041{
2042 return (0);
2043}
2044
2045static int
2046acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
2047{
2048 struct acpi_softc *sc;
2049 struct acpi_ioctl_hook *hp;
2050 int error, xerror, state;
2051 ACPI_LOCK_DECL;
2052
2053 ACPI_LOCK;
2054
2055 error = state = 0;
2056 sc = dev->si_drv1;
2057
2058 /*
2059 * Scan the list of registered ioctls, looking for handlers.
2060 */
2061 if (acpi_ioctl_hooks_initted) {
2062 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
2063 if (hp->cmd == cmd) {
2064 xerror = hp->fn(cmd, addr, hp->arg);
2065 if (xerror != 0)
2066 error = xerror;
2067 goto out;
2068 }
2069 }
2070 }
2071
2072 /*
2073 * Core ioctls are not permitted for non-writable user.
2074 * Currently, other ioctls just fetch information.
2075 * Not changing system behavior.
2076 */
2077 if((flag & FWRITE) == 0)
2078 return (EPERM);
2079
2080 /* Core system ioctls. */
2081 switch (cmd) {
2082 case ACPIIO_ENABLE:
2083 if (ACPI_FAILURE(acpi_Enable(sc)))
2084 error = ENXIO;
2085 break;
2086 case ACPIIO_DISABLE:
2087 if (ACPI_FAILURE(acpi_Disable(sc)))
2088 error = ENXIO;
2089 break;
2090 case ACPIIO_SETSLPSTATE:
2091 if (!sc->acpi_enabled) {
2092 error = ENXIO;
2093 break;
2094 }
2095 state = *(int *)addr;
2096 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) {
2097 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
2098 error = EINVAL;
2099 } else {
2100 error = EINVAL;
2101 }
2102 break;
2103 default:
2104 if (error == 0)
2105 error = EINVAL;
2106 break;
2107 }
2108
2109out:
2110 ACPI_UNLOCK;
2111 return (error);
2112}
2113
2114static int
2115acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2116{
2117 char sleep_state[4];
2118 char buf[16];
2119 int error;
2120 UINT8 state, TypeA, TypeB;
2121
2122 buf[0] = '\0';
2123 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX+1; state++) {
2124 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
2125 sprintf(sleep_state, "S%d ", state);
2126 strcat(buf, sleep_state);
2127 }
2128 }
2129 error = sysctl_handle_string(oidp, buf, sizeof(buf), req);
2130 return (error);
2131}
2132
2133static int
2134acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2135{
2136 char sleep_state[10];
2137 int error;
2138 u_int new_state, old_state;
2139
2140 old_state = *(u_int *)oidp->oid_arg1;
2141 if (old_state > ACPI_S_STATES_MAX+1) {
2142 strcpy(sleep_state, "unknown");
2143 } else {
2144 bzero(sleep_state, sizeof(sleep_state));
2145 strncpy(sleep_state, sleep_state_names[old_state],
2146 sizeof(sleep_state_names[old_state]));
2147 }
2148 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
2149 if (error == 0 && req->newptr != NULL) {
2150 new_state = ACPI_STATE_S0;
2151 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) {
2152 if (strncmp(sleep_state, sleep_state_names[new_state],
2153 sizeof(sleep_state)) == 0)
2154 break;
2155 }
2156 if (new_state <= ACPI_S_STATES_MAX + 1) {
2157 if (new_state != old_state)
2158 *(u_int *)oidp->oid_arg1 = new_state;
2159 } else {
2160 error = EINVAL;
2161 }
2162 }
2163
2164 return (error);
2165}
2166
2167/* Inform devctl(4) when we receive a Notify. */
2168void
2169acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
2170{
2171 char notify_buf[16];
2172 ACPI_BUFFER handle_buf;
2173 ACPI_STATUS status;
2174
2175 if (subsystem == NULL)
2176 return;
2177
2178 handle_buf.Pointer = NULL;
2179 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
2180 status = AcpiNsHandleToPathname(h, &handle_buf);
2181 if (ACPI_FAILURE(status))
2182 return;
2183 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
2184 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
2185 AcpiOsFree(handle_buf.Pointer);
2186}
2187
2188#ifdef ACPI_DEBUG
2189/*
2190 * Support for parsing debug options from the kernel environment.
2191 *
2192 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
2193 * by specifying the names of the bits in the debug.acpi.layer and
2194 * debug.acpi.level environment variables. Bits may be unset by
2195 * prefixing the bit name with !.
2196 */
2197struct debugtag
2198{
2199 char *name;
2200 UINT32 value;
2201};
2202
2203static struct debugtag dbg_layer[] = {
2204 {"ACPI_UTILITIES", ACPI_UTILITIES},
2205 {"ACPI_HARDWARE", ACPI_HARDWARE},
2206 {"ACPI_EVENTS", ACPI_EVENTS},
2207 {"ACPI_TABLES", ACPI_TABLES},
2208 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
2209 {"ACPI_PARSER", ACPI_PARSER},
2210 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
2211 {"ACPI_EXECUTER", ACPI_EXECUTER},
2212 {"ACPI_RESOURCES", ACPI_RESOURCES},
2213 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
2214 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
2215 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
2216 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
2217
2218 {"ACPI_BUS", ACPI_BUS},
2219 {"ACPI_SYSTEM", ACPI_SYSTEM},
2220 {"ACPI_POWER", ACPI_POWER},
2221 {"ACPI_EC", ACPI_EC},
2222 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
2223 {"ACPI_BATTERY", ACPI_BATTERY},
2224 {"ACPI_BUTTON", ACPI_BUTTON},
2225 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
2226 {"ACPI_THERMAL", ACPI_THERMAL},
2227 {"ACPI_FAN", ACPI_FAN},
2228 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
2229 {NULL, 0}
2230};
2231
2232static struct debugtag dbg_level[] = {
2233 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
2234 {"ACPI_LV_WARN", ACPI_LV_WARN},
2235 {"ACPI_LV_INIT", ACPI_LV_INIT},
2236 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
2237 {"ACPI_LV_INFO", ACPI_LV_INFO},
2238 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
2239
2240 /* Trace verbosity level 1 [Standard Trace Level] */
2241 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
2242 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
2243 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
2244 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
2245 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
2246 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
2247 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
2248 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
2249 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
2250 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
2251 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
2252 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
2253 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
2254 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
2255 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
2256
2257 /* Trace verbosity level 2 [Function tracing and memory allocation] */
2258 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
2259 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
2260 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
2261 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
2262 {"ACPI_LV_ALL", ACPI_LV_ALL},
2263
2264 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
2265 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
2266 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
2267 {"ACPI_LV_IO", ACPI_LV_IO},
2268 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
2269 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
2270
2271 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
2272 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
2273 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
2274 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
2275 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
2276 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
2277 {NULL, 0}
2278};
2279
2280static void
2281acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
2282{
2283 char *ep;
2284 int i, l;
2285 int set;
2286
2287 while (*cp) {
2288 if (isspace(*cp)) {
2289 cp++;
2290 continue;
2291 }
2292 ep = cp;
2293 while (*ep && !isspace(*ep))
2294 ep++;
2295 if (*cp == '!') {
2296 set = 0;
2297 cp++;
2298 if (cp == ep)
2299 continue;
2300 } else {
2301 set = 1;
2302 }
2303 l = ep - cp;
2304 for (i = 0; tag[i].name != NULL; i++) {
2305 if (!strncmp(cp, tag[i].name, l)) {
2306 if (set)
2307 *flag |= tag[i].value;
2308 else
2309 *flag &= ~tag[i].value;
2310 printf("ACPI_DEBUG: set '%s'\n", tag[i].name);
2311 }
2312 }
2313 cp = ep;
2314 }
2315}
2316
2317static void
2318acpi_set_debugging(void *junk)
2319{
2320 char *cp;
2321
2322 if (cold) {
2323 AcpiDbgLayer = 0;
2324 AcpiDbgLevel = 0;
2325 }
2326
2327 if ((cp = getenv("debug.acpi.layer")) != NULL) {
2328 acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer);
2329 freeenv(cp);
2330 }
2331 if ((cp = getenv("debug.acpi.level")) != NULL) {
2332 acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel);
2333 freeenv(cp);
2334 }
2335
2336 if (cold) {
2337 printf("ACPI debug layer 0x%x debug level 0x%x\n",
2338 AcpiDbgLayer, AcpiDbgLevel);
2339 }
2340}
2341SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
2342 NULL);
2343
2344static int
2345acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
2346{
2347 int error, *dbg;
2348 struct debugtag *tag;
2349 struct sbuf sb;
2350
2351 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
2352 return (ENOMEM);
2353 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
2354 tag = &dbg_layer[0];
2355 dbg = &AcpiDbgLayer;
2356 } else {
2357 tag = &dbg_level[0];
2358 dbg = &AcpiDbgLevel;
2359 }
2360
2361 /* Get old values if this is a get request. */
2362 if (*dbg == 0) {
2363 sbuf_cpy(&sb, "NONE");
2364 } else if (req->newptr == NULL) {
2365 for (; tag->name != NULL; tag++) {
2366 if ((*dbg & tag->value) == tag->value)
2367 sbuf_printf(&sb, "%s ", tag->name);
2368 }
2369 }
2370 sbuf_trim(&sb);
2371 sbuf_finish(&sb);
2372
2373 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
2374 sbuf_delete(&sb);
2375
2376 /* If the user is setting a string, parse it. */
2377 if (error == 0 && req->newptr != NULL) {
2378 *dbg = 0;
2379 setenv((char *)oidp->oid_arg1, (char *)req->newptr);
2380 acpi_set_debugging(NULL);
2381 }
2382
2383 return (error);
2384}
2385SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
2386 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
2387SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
2388 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
2389#endif
2390
2391static int
2392acpi_pm_func(u_long cmd, void *arg, ...)
2393{
2394 int state, acpi_state;
2395 int error;
2396 struct acpi_softc *sc;
2397 va_list ap;
2398
2399 error = 0;
2400 switch (cmd) {
2401 case POWER_CMD_SUSPEND:
2402 sc = (struct acpi_softc *)arg;
2403 if (sc == NULL) {
2404 error = EINVAL;
2405 goto out;
2406 }
2407
2408 va_start(ap, arg);
2409 state = va_arg(ap, int);
2410 va_end(ap);
2411
2412 switch (state) {
2413 case POWER_SLEEP_STATE_STANDBY:
2414 acpi_state = sc->acpi_standby_sx;
2415 break;
2416 case POWER_SLEEP_STATE_SUSPEND:
2417 acpi_state = sc->acpi_suspend_sx;
2418 break;
2419 case POWER_SLEEP_STATE_HIBERNATE:
2420 acpi_state = ACPI_STATE_S4;
2421 break;
2422 default:
2423 error = EINVAL;
2424 goto out;
2425 }
2426
2427 acpi_SetSleepState(sc, acpi_state);
2428 break;
2429 default:
2430 error = EINVAL;
2431 goto out;
2432 }
2433
2434out:
2435 return (error);
2436}
2437
2438static void
2439acpi_pm_register(void *arg)
2440{
2441 if (!cold || resource_disabled("acpi", 0))
2442 return;
2443
2444 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
2445}
2446
2447SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
| 1757{
1758 struct acpi_softc *sc = (struct acpi_softc *)context;
1759
1760 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1761
1762 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
1763
1764 return_VALUE (ACPI_INTERRUPT_HANDLED);
1765}
1766
1767/*
1768 * XXX This is kinda ugly, and should not be here.
1769 */
1770struct acpi_staticbuf {
1771 ACPI_BUFFER buffer;
1772 char data[512];
1773};
1774
1775char *
1776acpi_name(ACPI_HANDLE handle)
1777{
1778 static struct acpi_staticbuf buf;
1779
1780 ACPI_ASSERTLOCK;
1781
1782 buf.buffer.Length = 512;
1783 buf.buffer.Pointer = &buf.data[0];
1784
1785 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer)))
1786 return (buf.buffer.Pointer);
1787
1788 return ("(unknown path)");
1789}
1790
1791/*
1792 * Debugging/bug-avoidance. Avoid trying to fetch info on various
1793 * parts of the namespace.
1794 */
1795int
1796acpi_avoid(ACPI_HANDLE handle)
1797{
1798 char *cp, *env, *np;
1799 int len;
1800
1801 np = acpi_name(handle);
1802 if (*np == '\\')
1803 np++;
1804 if ((env = getenv("debug.acpi.avoid")) == NULL)
1805 return (0);
1806
1807 /* Scan the avoid list checking for a match */
1808 cp = env;
1809 for (;;) {
1810 while ((*cp != 0) && isspace(*cp))
1811 cp++;
1812 if (*cp == 0)
1813 break;
1814 len = 0;
1815 while ((cp[len] != 0) && !isspace(cp[len]))
1816 len++;
1817 if (!strncmp(cp, np, len)) {
1818 freeenv(env);
1819 return(1);
1820 }
1821 cp += len;
1822 }
1823 freeenv(env);
1824
1825 return (0);
1826}
1827
1828/*
1829 * Debugging/bug-avoidance. Disable ACPI subsystem components.
1830 */
1831int
1832acpi_disabled(char *subsys)
1833{
1834 char *cp, *env;
1835 int len;
1836
1837 if ((env = getenv("debug.acpi.disable")) == NULL)
1838 return (0);
1839 if (!strcmp(env, "all")) {
1840 freeenv(env);
1841 return (1);
1842 }
1843
1844 /* scan the disable list checking for a match */
1845 cp = env;
1846 for (;;) {
1847 while ((*cp != 0) && isspace(*cp))
1848 cp++;
1849 if (*cp == 0)
1850 break;
1851 len = 0;
1852 while ((cp[len] != 0) && !isspace(cp[len]))
1853 len++;
1854 if (!strncmp(cp, subsys, len)) {
1855 freeenv(env);
1856 return (1);
1857 }
1858 cp += len;
1859 }
1860 freeenv(env);
1861
1862 return (0);
1863}
1864
1865/*
1866 * Device wake capability enable/disable.
1867 */
1868void
1869acpi_device_enable_wake_capability(ACPI_HANDLE h, int enable)
1870{
1871 ACPI_OBJECT_LIST ArgList;
1872 ACPI_OBJECT Arg;
1873
1874 /*
1875 * TBD: All Power Resources referenced by elements 2 through N
1876 * of the _PRW object are put into the ON state.
1877 */
1878
1879 ArgList.Count = 1;
1880 ArgList.Pointer = &Arg;
1881
1882 Arg.Type = ACPI_TYPE_INTEGER;
1883 Arg.Integer.Value = enable;
1884
1885 (void)AcpiEvaluateObject(h, "_PSW", &ArgList, NULL);
1886}
1887
1888void
1889acpi_device_enable_wake_event(ACPI_HANDLE h)
1890{
1891 struct acpi_softc *sc;
1892 ACPI_STATUS status;
1893 ACPI_BUFFER prw_buffer;
1894 ACPI_OBJECT *res;
1895
1896 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1897
1898 sc = devclass_get_softc(acpi_devclass, 0);
1899 if (sc == NULL)
1900 return;
1901
1902 /*
1903 * _PRW object is only required for devices that have the ability
1904 * to wake the system from a system sleeping state.
1905 */
1906 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
1907 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
1908 if (ACPI_FAILURE(status))
1909 return;
1910
1911 res = (ACPI_OBJECT *)prw_buffer.Pointer;
1912 if (res == NULL)
1913 return;
1914
1915 if ((res->Type != ACPI_TYPE_PACKAGE) || (res->Package.Count < 2)) {
1916 goto out;
1917 }
1918
1919 /*
1920 * The element 1 of the _PRW object:
1921 * The lowest power system sleeping state that can be entered
1922 * while still providing wake functionality.
1923 * The sleeping state being entered must be greater or equal to
1924 * the power state declared in element 1 of the _PRW object.
1925 */
1926 if (res->Package.Elements[1].Type != ACPI_TYPE_INTEGER)
1927 goto out;
1928
1929 if (sc->acpi_sstate > res->Package.Elements[1].Integer.Value)
1930 goto out;
1931
1932 /*
1933 * The element 0 of the _PRW object:
1934 */
1935 switch(res->Package.Elements[0].Type) {
1936 case ACPI_TYPE_INTEGER:
1937 /*
1938 * If the data type of this package element is numeric, then this
1939 * _PRW package element is the bit index in the GPEx_EN, in the
1940 * GPE blocks described in the FADT, of the enable bit that is
1941 * enabled for the wake event.
1942 */
1943
1944 status = AcpiEnableGpe(NULL, res->Package.Elements[0].Integer.Value,
1945 ACPI_EVENT_WAKE_ENABLE);
1946 if (ACPI_FAILURE(status))
1947 printf("%s: EnableEvent Failed\n", __func__);
1948 break;
1949 case ACPI_TYPE_PACKAGE:
1950 /*
1951 * XXX TBD
1952 *
1953 * If the data type of this package element is a package, then this
1954 * _PRW package element is itself a package containing two
1955 * elements. The first is an object reference to the GPE Block
1956 * device that contains the GPE that will be triggered by the wake
1957 * event. The second element is numeric and it contains the bit
1958 * index in the GPEx_EN, in the GPE Block referenced by the
1959 * first element in the package, of the enable bit that is enabled for
1960 * the wake event.
1961 * For example, if this field is a package then it is of the form:
1962 * Package() {\_SB.PCI0.ISA.GPE, 2}
1963 */
1964 break;
1965 default:
1966 break;
1967 }
1968
1969out:
1970 if (prw_buffer.Pointer != NULL)
1971 AcpiOsFree(prw_buffer.Pointer);
1972}
1973
1974/*
1975 * Control interface.
1976 *
1977 * We multiplex ioctls for all participating ACPI devices here. Individual
1978 * drivers wanting to be accessible via /dev/acpi should use the
1979 * register/deregister interface to make their handlers visible.
1980 */
1981struct acpi_ioctl_hook
1982{
1983 TAILQ_ENTRY(acpi_ioctl_hook) link;
1984 u_long cmd;
1985 acpi_ioctl_fn fn;
1986 void *arg;
1987};
1988
1989static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
1990static int acpi_ioctl_hooks_initted;
1991
1992/*
1993 * Register an ioctl handler.
1994 */
1995int
1996acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
1997{
1998 struct acpi_ioctl_hook *hp;
1999
2000 if ((hp = malloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
2001 return (ENOMEM);
2002 hp->cmd = cmd;
2003 hp->fn = fn;
2004 hp->arg = arg;
2005 if (acpi_ioctl_hooks_initted == 0) {
2006 TAILQ_INIT(&acpi_ioctl_hooks);
2007 acpi_ioctl_hooks_initted = 1;
2008 }
2009 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
2010 return (0);
2011}
2012
2013/*
2014 * Deregister an ioctl handler.
2015 */
2016void
2017acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
2018{
2019 struct acpi_ioctl_hook *hp;
2020
2021 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
2022 if ((hp->cmd == cmd) && (hp->fn == fn))
2023 break;
2024
2025 if (hp != NULL) {
2026 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
2027 free(hp, M_ACPIDEV);
2028 }
2029}
2030
2031static int
2032acpiopen(dev_t dev, int flag, int fmt, d_thread_t *td)
2033{
2034 return (0);
2035}
2036
2037static int
2038acpiclose(dev_t dev, int flag, int fmt, d_thread_t *td)
2039{
2040 return (0);
2041}
2042
2043static int
2044acpiioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, d_thread_t *td)
2045{
2046 struct acpi_softc *sc;
2047 struct acpi_ioctl_hook *hp;
2048 int error, xerror, state;
2049 ACPI_LOCK_DECL;
2050
2051 ACPI_LOCK;
2052
2053 error = state = 0;
2054 sc = dev->si_drv1;
2055
2056 /*
2057 * Scan the list of registered ioctls, looking for handlers.
2058 */
2059 if (acpi_ioctl_hooks_initted) {
2060 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
2061 if (hp->cmd == cmd) {
2062 xerror = hp->fn(cmd, addr, hp->arg);
2063 if (xerror != 0)
2064 error = xerror;
2065 goto out;
2066 }
2067 }
2068 }
2069
2070 /*
2071 * Core ioctls are not permitted for non-writable user.
2072 * Currently, other ioctls just fetch information.
2073 * Not changing system behavior.
2074 */
2075 if((flag & FWRITE) == 0)
2076 return (EPERM);
2077
2078 /* Core system ioctls. */
2079 switch (cmd) {
2080 case ACPIIO_ENABLE:
2081 if (ACPI_FAILURE(acpi_Enable(sc)))
2082 error = ENXIO;
2083 break;
2084 case ACPIIO_DISABLE:
2085 if (ACPI_FAILURE(acpi_Disable(sc)))
2086 error = ENXIO;
2087 break;
2088 case ACPIIO_SETSLPSTATE:
2089 if (!sc->acpi_enabled) {
2090 error = ENXIO;
2091 break;
2092 }
2093 state = *(int *)addr;
2094 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) {
2095 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
2096 error = EINVAL;
2097 } else {
2098 error = EINVAL;
2099 }
2100 break;
2101 default:
2102 if (error == 0)
2103 error = EINVAL;
2104 break;
2105 }
2106
2107out:
2108 ACPI_UNLOCK;
2109 return (error);
2110}
2111
2112static int
2113acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2114{
2115 char sleep_state[4];
2116 char buf[16];
2117 int error;
2118 UINT8 state, TypeA, TypeB;
2119
2120 buf[0] = '\0';
2121 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX+1; state++) {
2122 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
2123 sprintf(sleep_state, "S%d ", state);
2124 strcat(buf, sleep_state);
2125 }
2126 }
2127 error = sysctl_handle_string(oidp, buf, sizeof(buf), req);
2128 return (error);
2129}
2130
2131static int
2132acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2133{
2134 char sleep_state[10];
2135 int error;
2136 u_int new_state, old_state;
2137
2138 old_state = *(u_int *)oidp->oid_arg1;
2139 if (old_state > ACPI_S_STATES_MAX+1) {
2140 strcpy(sleep_state, "unknown");
2141 } else {
2142 bzero(sleep_state, sizeof(sleep_state));
2143 strncpy(sleep_state, sleep_state_names[old_state],
2144 sizeof(sleep_state_names[old_state]));
2145 }
2146 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
2147 if (error == 0 && req->newptr != NULL) {
2148 new_state = ACPI_STATE_S0;
2149 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) {
2150 if (strncmp(sleep_state, sleep_state_names[new_state],
2151 sizeof(sleep_state)) == 0)
2152 break;
2153 }
2154 if (new_state <= ACPI_S_STATES_MAX + 1) {
2155 if (new_state != old_state)
2156 *(u_int *)oidp->oid_arg1 = new_state;
2157 } else {
2158 error = EINVAL;
2159 }
2160 }
2161
2162 return (error);
2163}
2164
2165/* Inform devctl(4) when we receive a Notify. */
2166void
2167acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
2168{
2169 char notify_buf[16];
2170 ACPI_BUFFER handle_buf;
2171 ACPI_STATUS status;
2172
2173 if (subsystem == NULL)
2174 return;
2175
2176 handle_buf.Pointer = NULL;
2177 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
2178 status = AcpiNsHandleToPathname(h, &handle_buf);
2179 if (ACPI_FAILURE(status))
2180 return;
2181 snprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
2182 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
2183 AcpiOsFree(handle_buf.Pointer);
2184}
2185
2186#ifdef ACPI_DEBUG
2187/*
2188 * Support for parsing debug options from the kernel environment.
2189 *
2190 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
2191 * by specifying the names of the bits in the debug.acpi.layer and
2192 * debug.acpi.level environment variables. Bits may be unset by
2193 * prefixing the bit name with !.
2194 */
2195struct debugtag
2196{
2197 char *name;
2198 UINT32 value;
2199};
2200
2201static struct debugtag dbg_layer[] = {
2202 {"ACPI_UTILITIES", ACPI_UTILITIES},
2203 {"ACPI_HARDWARE", ACPI_HARDWARE},
2204 {"ACPI_EVENTS", ACPI_EVENTS},
2205 {"ACPI_TABLES", ACPI_TABLES},
2206 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
2207 {"ACPI_PARSER", ACPI_PARSER},
2208 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
2209 {"ACPI_EXECUTER", ACPI_EXECUTER},
2210 {"ACPI_RESOURCES", ACPI_RESOURCES},
2211 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
2212 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
2213 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
2214 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
2215
2216 {"ACPI_BUS", ACPI_BUS},
2217 {"ACPI_SYSTEM", ACPI_SYSTEM},
2218 {"ACPI_POWER", ACPI_POWER},
2219 {"ACPI_EC", ACPI_EC},
2220 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
2221 {"ACPI_BATTERY", ACPI_BATTERY},
2222 {"ACPI_BUTTON", ACPI_BUTTON},
2223 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
2224 {"ACPI_THERMAL", ACPI_THERMAL},
2225 {"ACPI_FAN", ACPI_FAN},
2226 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
2227 {NULL, 0}
2228};
2229
2230static struct debugtag dbg_level[] = {
2231 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
2232 {"ACPI_LV_WARN", ACPI_LV_WARN},
2233 {"ACPI_LV_INIT", ACPI_LV_INIT},
2234 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
2235 {"ACPI_LV_INFO", ACPI_LV_INFO},
2236 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
2237
2238 /* Trace verbosity level 1 [Standard Trace Level] */
2239 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
2240 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
2241 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
2242 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
2243 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
2244 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
2245 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
2246 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
2247 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
2248 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
2249 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
2250 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
2251 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
2252 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
2253 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
2254
2255 /* Trace verbosity level 2 [Function tracing and memory allocation] */
2256 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
2257 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
2258 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
2259 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
2260 {"ACPI_LV_ALL", ACPI_LV_ALL},
2261
2262 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
2263 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
2264 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
2265 {"ACPI_LV_IO", ACPI_LV_IO},
2266 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
2267 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
2268
2269 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
2270 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
2271 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
2272 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
2273 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
2274 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
2275 {NULL, 0}
2276};
2277
2278static void
2279acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
2280{
2281 char *ep;
2282 int i, l;
2283 int set;
2284
2285 while (*cp) {
2286 if (isspace(*cp)) {
2287 cp++;
2288 continue;
2289 }
2290 ep = cp;
2291 while (*ep && !isspace(*ep))
2292 ep++;
2293 if (*cp == '!') {
2294 set = 0;
2295 cp++;
2296 if (cp == ep)
2297 continue;
2298 } else {
2299 set = 1;
2300 }
2301 l = ep - cp;
2302 for (i = 0; tag[i].name != NULL; i++) {
2303 if (!strncmp(cp, tag[i].name, l)) {
2304 if (set)
2305 *flag |= tag[i].value;
2306 else
2307 *flag &= ~tag[i].value;
2308 printf("ACPI_DEBUG: set '%s'\n", tag[i].name);
2309 }
2310 }
2311 cp = ep;
2312 }
2313}
2314
2315static void
2316acpi_set_debugging(void *junk)
2317{
2318 char *cp;
2319
2320 if (cold) {
2321 AcpiDbgLayer = 0;
2322 AcpiDbgLevel = 0;
2323 }
2324
2325 if ((cp = getenv("debug.acpi.layer")) != NULL) {
2326 acpi_parse_debug(cp, &dbg_layer[0], &AcpiDbgLayer);
2327 freeenv(cp);
2328 }
2329 if ((cp = getenv("debug.acpi.level")) != NULL) {
2330 acpi_parse_debug(cp, &dbg_level[0], &AcpiDbgLevel);
2331 freeenv(cp);
2332 }
2333
2334 if (cold) {
2335 printf("ACPI debug layer 0x%x debug level 0x%x\n",
2336 AcpiDbgLayer, AcpiDbgLevel);
2337 }
2338}
2339SYSINIT(acpi_debugging, SI_SUB_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
2340 NULL);
2341
2342static int
2343acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
2344{
2345 int error, *dbg;
2346 struct debugtag *tag;
2347 struct sbuf sb;
2348
2349 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
2350 return (ENOMEM);
2351 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
2352 tag = &dbg_layer[0];
2353 dbg = &AcpiDbgLayer;
2354 } else {
2355 tag = &dbg_level[0];
2356 dbg = &AcpiDbgLevel;
2357 }
2358
2359 /* Get old values if this is a get request. */
2360 if (*dbg == 0) {
2361 sbuf_cpy(&sb, "NONE");
2362 } else if (req->newptr == NULL) {
2363 for (; tag->name != NULL; tag++) {
2364 if ((*dbg & tag->value) == tag->value)
2365 sbuf_printf(&sb, "%s ", tag->name);
2366 }
2367 }
2368 sbuf_trim(&sb);
2369 sbuf_finish(&sb);
2370
2371 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
2372 sbuf_delete(&sb);
2373
2374 /* If the user is setting a string, parse it. */
2375 if (error == 0 && req->newptr != NULL) {
2376 *dbg = 0;
2377 setenv((char *)oidp->oid_arg1, (char *)req->newptr);
2378 acpi_set_debugging(NULL);
2379 }
2380
2381 return (error);
2382}
2383SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
2384 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
2385SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
2386 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
2387#endif
2388
2389static int
2390acpi_pm_func(u_long cmd, void *arg, ...)
2391{
2392 int state, acpi_state;
2393 int error;
2394 struct acpi_softc *sc;
2395 va_list ap;
2396
2397 error = 0;
2398 switch (cmd) {
2399 case POWER_CMD_SUSPEND:
2400 sc = (struct acpi_softc *)arg;
2401 if (sc == NULL) {
2402 error = EINVAL;
2403 goto out;
2404 }
2405
2406 va_start(ap, arg);
2407 state = va_arg(ap, int);
2408 va_end(ap);
2409
2410 switch (state) {
2411 case POWER_SLEEP_STATE_STANDBY:
2412 acpi_state = sc->acpi_standby_sx;
2413 break;
2414 case POWER_SLEEP_STATE_SUSPEND:
2415 acpi_state = sc->acpi_suspend_sx;
2416 break;
2417 case POWER_SLEEP_STATE_HIBERNATE:
2418 acpi_state = ACPI_STATE_S4;
2419 break;
2420 default:
2421 error = EINVAL;
2422 goto out;
2423 }
2424
2425 acpi_SetSleepState(sc, acpi_state);
2426 break;
2427 default:
2428 error = EINVAL;
2429 goto out;
2430 }
2431
2432out:
2433 return (error);
2434}
2435
2436static void
2437acpi_pm_register(void *arg)
2438{
2439 if (!cold || resource_disabled("acpi", 0))
2440 return;
2441
2442 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
2443}
2444
2445SYSINIT(power, SI_SUB_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
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