acpi_bus_alloc_gas: Constify gas parameter
[dragonfly.git] / sys / dev / acpica5 / acpi.c
CommitLineData
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1/*-
2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.freebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.freebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
c8b4f0e6 29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.160 2004/06/14 03:52:19 njl Exp $
71fc104f 30 * $DragonFly: src/sys/dev/acpica5/acpi.c,v 1.37 2008/10/03 00:26:21 hasso Exp $
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31 */
32
33#include "opt_acpi.h"
34#include <sys/param.h>
35#include <sys/kernel.h>
36#include <sys/proc.h>
37#include <sys/fcntl.h>
38#include <sys/malloc.h>
39#include <sys/bus.h>
40#include <sys/conf.h>
fef8985e 41#include <sys/device.h>
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42#include <sys/reboot.h>
43#include <sys/sysctl.h>
44#include <sys/ctype.h>
45#include <sys/linker.h>
46#include <sys/power.h>
47#include <sys/sbuf.h>
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48#include <sys/rman.h>
49
1a5f156c 50#include <sys/thread2.h>
e1eeedd0 51#include <sys/lock.h>
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52
53#include <machine/clock.h>
f9d8cd12 54#include <machine/globaldata.h>
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55#include <bus/isa/isavar.h>
56
57#include "acpi.h"
58#include <dev/acpica5/acpivar.h>
59#include <dev/acpica5/acpiio.h>
60#include <acnamesp.h>
61
62MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
63
64/* Hooks for the ACPI CA debugging infrastructure */
65#define _COMPONENT ACPI_BUS
66ACPI_MODULE_NAME("ACPI")
67
68static d_open_t acpiopen;
69static d_close_t acpiclose;
70static d_ioctl_t acpiioctl;
71
72#define CDEV_MAJOR 152
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73static struct dev_ops acpi_ops = {
74 { "acpi", CDEV_MAJOR, 0 },
75 .d_open = acpiopen,
76 .d_close = acpiclose,
77 .d_ioctl = acpiioctl
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78};
79
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80#if __FreeBSD_version >= 500000
81struct mtx acpi_mutex;
82#endif
83
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84/* Local pools for managing system resources for ACPI child devices. */
85struct rman acpi_rman_io, acpi_rman_mem;
86
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87struct acpi_quirks {
88 char *OemId;
89 uint32_t OemRevision;
90 char *value;
91};
92
93#define ACPI_OEM_REV_ANY 0
94
95static struct acpi_quirks acpi_quirks_table[] = {
96#ifdef notyet
97 /* Bad PCI routing table. Used on some SuperMicro boards. */
98 { "PTLTD ", 0x06040000, "pci_link" },
99#endif
54ca5b45
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100#ifdef ACPI_QUIRK_VMWARE
101 /*
102 * VMware's ACPI-fast24 timer runs roughly 65 times too fast, and not
103 * predictably/monotonic either. This is observed at least under SMP
104 * conditions.
105 *
106 * NOTE: this combination of OemId and OemRevision is NOT unique; it is
107 * known or suspected that at least some SuperMicro boards (see above) and
108 * the Compaq Presario 1952 use this combination. That's why this quirks
109 * entry is guarded by an #ifdef, and associated config option.
110 */
111 { "PTLTD ", 0x06040000, "timer" },
112#endif /* ACPI_QUIRK_VMWARE */
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113 { NULL, 0, NULL }
114};
115
5ed44076 116static int acpi_modevent(struct module *mod, int event, void *junk);
39b5d600 117static int acpi_identify(driver_t *driver, device_t parent);
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118static int acpi_probe(device_t dev);
119static int acpi_attach(device_t dev);
49e48b8a 120static int acpi_shutdown(device_t dev);
f9d8cd12 121static void acpi_quirks_set(void);
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122static device_t acpi_add_child(device_t bus, device_t parent, int order,
123 const char *name, int unit);
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124static int acpi_print_child(device_t bus, device_t child);
125static int acpi_read_ivar(device_t dev, device_t child, int index,
126 uintptr_t *result);
127static int acpi_write_ivar(device_t dev, device_t child, int index,
128 uintptr_t value);
c8b4f0e6 129static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
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130static struct resource *acpi_alloc_resource(device_t bus, device_t child,
131 int type, int *rid, u_long start, u_long end,
132 u_long count, u_int flags);
133static int acpi_release_resource(device_t bus, device_t child, int type,
134 int rid, struct resource *r);
135static uint32_t acpi_isa_get_logicalid(device_t dev);
136static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
676159d4 137static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
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138static int acpi_isa_pnp_probe(device_t bus, device_t child,
139 struct isa_pnp_id *ids);
140static void acpi_probe_children(device_t bus);
141static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
142 void *context, void **status);
143static void acpi_shutdown_pre_sync(void *arg, int howto);
144static void acpi_shutdown_final(void *arg, int howto);
f9d8cd12 145static void acpi_shutdown_poweroff(void *arg);
5ed44076 146static void acpi_enable_fixed_events(struct acpi_softc *sc);
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147static int acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw);
148static ACPI_STATUS acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context,
149 void **status);
150static int acpi_wake_limit_walk(int sstate);
151static int acpi_wake_sysctl_walk(device_t dev);
edf5636b 152#ifdef dfly_notyet
49e48b8a 153static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
edf5636b 154#endif
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155static void acpi_system_eventhandler_sleep(void *arg, int state);
156static void acpi_system_eventhandler_wakeup(void *arg, int state);
157static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
158static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
159static int acpi_pm_func(u_long cmd, void *arg, ...);
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160static int acpi_child_location_str_method(device_t acdev, device_t child,
161 char *buf, size_t buflen);
162static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
163 char *buf, size_t buflen);
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164
165static device_method_t acpi_methods[] = {
166 /* Device interface */
167 DEVMETHOD(device_identify, acpi_identify),
168 DEVMETHOD(device_probe, acpi_probe),
169 DEVMETHOD(device_attach, acpi_attach),
49e48b8a 170 DEVMETHOD(device_shutdown, acpi_shutdown),
5ed44076 171 DEVMETHOD(device_detach, bus_generic_detach),
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172 DEVMETHOD(device_suspend, bus_generic_suspend),
173 DEVMETHOD(device_resume, bus_generic_resume),
174
175 /* Bus interface */
176 DEVMETHOD(bus_add_child, acpi_add_child),
177 DEVMETHOD(bus_print_child, acpi_print_child),
178 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
179 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
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180 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
181 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
182 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
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183 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
184 DEVMETHOD(bus_release_resource, acpi_release_resource),
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185 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
186 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
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187 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
188 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
189 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
190 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
191 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
192
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193 /* ACPI bus */
194 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
195
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196 /* ISA emulation */
197 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
198
199 {0, 0}
200};
201
202static driver_t acpi_driver = {
203 "acpi",
204 acpi_methods,
205 sizeof(struct acpi_softc),
206};
207
208static devclass_t acpi_devclass;
209DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
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210MODULE_VERSION(acpi, 1);
211
212static const char* sleep_state_names[] = {
213 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
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214
215SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RW, NULL, "ACPI debugging");
216static char acpi_ca_version[12];
217SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
218 acpi_ca_version, 0, "Version of Intel ACPI-CA");
219
220/*
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221 * Allow override of whether methods execute in parallel or not.
222 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
223 * errors for AML that really can't handle parallel method execution.
224 * It is off by default since this breaks recursive methods and
225 * some IBMs use such code.
226 */
227static int acpi_serialize_methods;
228TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
229
230/*
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231 * ACPI can only be loaded as a module by the loader; activating it after
232 * system bootstrap time is not useful, and can be fatal to the system.
233 * It also cannot be unloaded, since the entire system bus heirarchy hangs
234 * off it.
235 */
236static int
237acpi_modevent(struct module *mod, int event, void *junk)
238{
239 switch(event) {
240 case MOD_LOAD:
241 if (!cold) {
e3869ec7 242 kprintf("The ACPI driver cannot be loaded after boot.\n");
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243 return (EPERM);
244 }
245 break;
246 case MOD_UNLOAD:
247 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
248 return (EBUSY);
249 break;
250 default:
251 break;
252 }
253 return (0);
254}
255
256/*
257 * Perform early initialization.
258 */
259ACPI_STATUS
260acpi_Startup(void)
261{
262#ifdef ACPI_DEBUGGER
263 char *debugpoint;
264#endif
265 static int error, started = 0;
266
267 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
268
269 if (started)
f9d8cd12 270 return_VALUE (error);
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271 started = 1;
272
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273 /* Start up the ACPI CA subsystem. */
274#ifdef ACPI_DEBUGGER
bc01a404 275 debugpoint = kgetenv("debug.acpi.debugger");
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276 if (debugpoint) {
277 if (!strcmp(debugpoint, "init"))
278 acpi_EnterDebugger();
728aa6ee 279 kfreeenv(debugpoint);
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280 }
281#endif
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282 error = AcpiInitializeTables(NULL, 16, TRUE);
283 if (ACPI_FAILURE(error)) {
284 kprintf("ACPI: table initialization failed:\n");
f9d8cd12 285 return_VALUE (error);
5ed44076 286 }
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287
288 /* Set up any quirks we have for this XSDT. */
289 acpi_quirks_set();
290 if (acpi_disabled("acpi"))
291 return_VALUE (AE_ERROR);
292
293 return_VALUE (AE_OK);
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294}
295
296/*
297 * Detect ACPI, perform early initialisation
298 */
39b5d600 299static int
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300acpi_identify(driver_t *driver, device_t parent)
301{
302 device_t child;
303
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304 /*
305 * No sense rescanning an ACPI 'bus'.
306 */
307 if (device_get_state(parent) == DS_ATTACHED)
308 return(0);
309
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310 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
311
312 if (!cold)
39b5d600 313 return (ENXIO);
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314
315 /* Check that we haven't been disabled with a hint. */
316 if (resource_disabled("acpi", 0))
39b5d600 317 return (ENXIO);
5ed44076 318
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319 /* Make sure we're not being doubly invoked. */
320 if (device_find_child(parent, "acpi", 0) != NULL)
39b5d600 321 return (ENXIO);
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322
323 /* Initialize ACPI-CA. */
324 if (ACPI_FAILURE(acpi_Startup()))
39b5d600 325 return (ENXIO);
5ed44076 326
f8c7a42d 327 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%#x", ACPI_CA_VERSION);
f9d8cd12 328
5ed44076 329 /* Attach the actual ACPI device. */
2581072f 330 if ((child = BUS_ADD_CHILD(parent, parent, 0, "acpi", 0)) == NULL) {
5ed44076 331 device_printf(parent, "ACPI: could not attach\n");
39b5d600 332 return (ENXIO);
5ed44076 333 }
39b5d600 334 return (0);
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335}
336
337/*
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338 * Get a mapping of the root table header, as ACPICA code no longer
339 * keeps local copy of RSDT/XSDT
340 *
341 * return value: if non-NULL, mapped physical address of root table header.
342 * caller is supposed to unmap the region by AcpiOsUnmapMemory()
343 */
344static ACPI_TABLE_HEADER *
345acpi_map_rsdt_header(void)
346{
347 ACPI_PHYSICAL_ADDRESS rsdp_addr, addr;
348 ACPI_TABLE_RSDP *rsdp;
349
3641b7ca 350 if ((rsdp_addr = AcpiOsGetRootPointer()) == 0)
e1eeedd0
YT
351 return(NULL);
352 if ((rsdp = AcpiOsMapMemory(rsdp_addr, sizeof(*rsdp))) == NULL)
353 return(NULL);
354 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress)
355 addr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
356 else
357 addr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
358 AcpiOsUnmapMemory(rsdp, sizeof(*rsdp));
359
360 return AcpiOsMapMemory(addr, sizeof(ACPI_TABLE_HEADER));
361}
362
363/*
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364 * Fetch some descriptive data from ACPI to put in our attach message
365 */
366static int
367acpi_probe(device_t dev)
368{
e1eeedd0 369 ACPI_TABLE_HEADER *th;
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370 char buf[20];
371 int error;
372 struct sbuf sb;
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373 ACPI_LOCK_DECL;
374
375 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
376
377 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
378 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
379
380 device_printf(dev, "Other PM system enabled.\n");
381 return_VALUE(ENXIO);
382 }
383
384 ACPI_LOCK;
385
e1eeedd0
YT
386 th = acpi_map_rsdt_header();
387 if (th == NULL) {
388 device_printf(dev, "couldn't get RSDT header\n");
5ed44076 389 error = ENXIO;
e1eeedd0 390 goto unlock;
5ed44076 391 }
e1eeedd0
YT
392
393 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
394 sbuf_bcat(&sb, th->OemId, 6);
395 sbuf_trim(&sb);
396 sbuf_putc(&sb, ' ');
397 sbuf_bcat(&sb, th->OemTableId, 8);
398 sbuf_trim(&sb);
399 sbuf_finish(&sb);
400 device_set_desc_copy(dev, sbuf_data(&sb));
401 sbuf_delete(&sb);
402 AcpiOsUnmapMemory(th, sizeof(*th));
403 error = 0;
404unlock:
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405 ACPI_UNLOCK;
406 return_VALUE(error);
407}
408
409static int
410acpi_attach(device_t dev)
411{
412 struct acpi_softc *sc;
413 ACPI_STATUS status;
f9d8cd12 414 int error, state;
5ed44076 415 UINT32 flags;
f9d8cd12 416 UINT8 TypeA, TypeB;
5ed44076 417 char *env;
e1eeedd0 418 ACPI_TABLE_FACS *facsp;
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419#ifdef ACPI_DEBUGGER
420 char *debugpoint;
421#endif
422 ACPI_LOCK_DECL;
423
424 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
e1eeedd0
YT
425#if __FreeBSD_version >= 500000
426 /* Initialise the ACPI mutex */
427 mtx_init(&acpi_mutex, "ACPI global lock", NULL, MTX_DEF);
428#endif
429
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430 ACPI_LOCK;
431 sc = device_get_softc(dev);
432 bzero(sc, sizeof(*sc));
433 sc->acpi_dev = dev;
edf6eb70 434 callout_init(&sc->acpi_sleep_timer);
5ed44076 435
c877f0f6
YT
436 if ((error = acpi_task_thread_init())) {
437 device_printf(dev, "Could not start task thread.\n");
438 goto out;
439 }
440
e1eeedd0
YT
441 /*
442 * Set the globals from our tunables. This is needed because ACPI-CA
443 * uses UINT8 for some values and we have no tunable_byte.
444 */
445 AcpiGbl_AllMethodsSerialized = (UINT8)acpi_serialize_methods;
446 AcpiGbl_EnableInterpreterSlack = TRUE;
447
448 error = ENXIO;
5ed44076 449#ifdef ACPI_DEBUGGER
bc01a404 450 debugpoint = kgetenv("debug.acpi.debugger");
5ed44076 451 if (debugpoint) {
e1eeedd0 452 if (!strcmp(debugpoint, "tables"))
5ed44076 453 acpi_EnterDebugger();
728aa6ee 454 kfreeenv(debugpoint);
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455 }
456#endif
457
e1eeedd0
YT
458 if (ACPI_FAILURE(status = AcpiInitializeSubsystem())) {
459 kprintf("ACPI: initialisation failed: %s\n",
460 AcpiFormatException(status));
461 goto out;
462 }
463 if (ACPI_FAILURE(status = AcpiLoadTables())) {
464 kprintf("ACPI: table load failed: %s\n", AcpiFormatException(status));
465 goto out;
466 }
467
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468 /* Initialize resource manager. */
469 acpi_rman_io.rm_type = RMAN_ARRAY;
470 acpi_rman_io.rm_start = 0;
471 acpi_rman_io.rm_end = 0xffff;
472 acpi_rman_io.rm_descr = "I/O ports";
473 if (rman_init(&acpi_rman_io) != 0)
474 panic("acpi rman_init IO ports failed");
475 acpi_rman_mem.rm_type = RMAN_ARRAY;
476 acpi_rman_mem.rm_start = 0;
477 acpi_rman_mem.rm_end = ~0ul;
478 acpi_rman_mem.rm_descr = "I/O memory addresses";
479 if (rman_init(&acpi_rman_mem) != 0)
480 panic("acpi rman_init memory failed");
481
e1eeedd0
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482#ifdef ACPI_DEBUGGER
483 debugpoint = kgetenv("debug.acpi.debugger");
484 if (debugpoint) {
485 if (!strcmp(debugpoint, "spaces"))
486 acpi_EnterDebugger();
728aa6ee 487 kfreeenv(debugpoint);
e1eeedd0
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488 }
489#endif
5ed44076 490 /* Install the default address space handlers. */
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491 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
492 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
493 if (ACPI_FAILURE(status)) {
494 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
495 AcpiFormatException(status));
496 goto out;
497 }
498 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
499 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
500 if (ACPI_FAILURE(status)) {
501 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
502 AcpiFormatException(status));
503 goto out;
504 }
505 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
506 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
507 if (ACPI_FAILURE(status)) {
508 device_printf(dev, "could not initialise PciConfig handler: %s\n",
509 AcpiFormatException(status));
510 goto out;
511 }
512
513 /*
514 * Bring ACPI fully online.
515 *
516 * Note that some systems (specifically, those with namespace evaluation
517 * issues that require the avoidance of parts of the namespace) must
518 * avoid running _INI and _STA on everything, as well as dodging the final
519 * object init pass.
520 *
521 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
7beeeb16
YT
522 * For avoiding portions of the namespace without totally disabling _INI
523 * and _STA, use "debug.acpi.avoid.paths".
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524 *
525 * XXX We should arrange for the object init pass after we have attached
526 * all our child devices, but on many systems it works here.
527 */
528#ifdef ACPI_DEBUGGER
bc01a404 529 debugpoint = kgetenv("debug.acpi.debugger");
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530 if (debugpoint) {
531 if (!strcmp(debugpoint, "enable"))
532 acpi_EnterDebugger();
728aa6ee 533 kfreeenv(debugpoint);
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534 }
535#endif
536 flags = 0;
728aa6ee 537 if (ktestenv("debug.acpi.avoid"))
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538 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
539 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
540 device_printf(dev, "Could not enable ACPI: %s\n",
541 AcpiFormatException(status));
542 goto out;
543 }
544
545 /*
546 * Call the ECDT probe function to provide EC functionality before
547 * the namespace has been evaluated.
548 */
549 acpi_ec_ecdt_probe(dev);
550
551 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
552 device_printf(dev, "Could not initialize ACPI objects: %s\n",
553 AcpiFormatException(status));
554 goto out;
555 }
556
557 /*
558 * Setup our sysctl tree.
559 *
560 * XXX: This doesn't check to make sure that none of these fail.
561 */
562 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
563 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
564 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
565 device_get_name(dev), CTLFLAG_RD, 0, "");
566 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
567 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
568 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
569 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
570 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
571 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
572 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
573 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
574 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
575 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
576 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
577 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
578 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
579 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
580 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
581 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
582 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
583 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
584 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
585 OID_AUTO, "sleep_delay", CTLFLAG_RD | CTLFLAG_RW,
586 &sc->acpi_sleep_delay, 0, "sleep delay");
587 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
588 OID_AUTO, "s4bios", CTLFLAG_RD | CTLFLAG_RW,
589 &sc->acpi_s4bios, 0, "S4BIOS mode");
590 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
591 OID_AUTO, "verbose", CTLFLAG_RD | CTLFLAG_RW,
592 &sc->acpi_verbose, 0, "verbose mode");
593 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
594 OID_AUTO, "disable_on_poweroff", CTLFLAG_RD | CTLFLAG_RW,
595 &sc->acpi_disable_on_poweroff, 0, "ACPI subsystem disable on poweroff");
596
597 /*
49e48b8a 598 * Default to 1 second before sleeping to give some machines time to
5ed44076
MD
599 * stabilize.
600 */
49e48b8a
MD
601 sc->acpi_sleep_delay = 1;
602 sc->acpi_disable_on_poweroff = 0;
5ed44076
MD
603 if (bootverbose)
604 sc->acpi_verbose = 1;
bc01a404 605 if ((env = kgetenv("hw.acpi.verbose")) && strcmp(env, "0")) {
5ed44076 606 sc->acpi_verbose = 1;
728aa6ee 607 kfreeenv(env);
5ed44076
MD
608 }
609
610 /* Only enable S4BIOS by default if the FACS says it is available. */
e1eeedd0
YT
611 status = AcpiGetTableByIndex(ACPI_TABLE_INDEX_FACS,
612 (ACPI_TABLE_HEADER **)&facsp);
613 if (ACPI_SUCCESS(status)) {
614 if ((facsp->Flags & ACPI_FACS_S4_BIOS_PRESENT) != 0)
5ed44076 615 sc->acpi_s4bios = 1;
e1eeedd0 616 }
5ed44076
MD
617
618 /*
f9d8cd12
MD
619 * Dispatch the default sleep state to devices. The lid switch is set
620 * to NONE by default to avoid surprising users.
5ed44076 621 */
f9d8cd12
MD
622 sc->acpi_power_button_sx = ACPI_STATE_S5;
623 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
5ed44076
MD
624 sc->acpi_standby_sx = ACPI_STATE_S1;
625 sc->acpi_suspend_sx = ACPI_STATE_S3;
626
f9d8cd12
MD
627 /* Pick the first valid sleep state for the sleep button default. */
628 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
629 for (state = ACPI_STATE_S1; state < ACPI_STATE_S5; state++)
630 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
631 sc->acpi_sleep_button_sx = state;
632 break;
633 }
634
5ed44076
MD
635 acpi_enable_fixed_events(sc);
636
637 /*
638 * Scan the namespace and attach/initialise children.
639 */
640#ifdef ACPI_DEBUGGER
bc01a404 641 debugpoint = kgetenv("debug.acpi.debugger");
5ed44076
MD
642 if (debugpoint) {
643 if (!strcmp(debugpoint, "probe"))
644 acpi_EnterDebugger();
728aa6ee 645 kfreeenv(debugpoint);
5ed44076
MD
646 }
647#endif
648
649 /* Register our shutdown handlers */
650 EVENTHANDLER_REGISTER(shutdown_pre_sync, acpi_shutdown_pre_sync, sc,
651 SHUTDOWN_PRI_LAST);
652 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
653 SHUTDOWN_PRI_LAST);
654
655 /*
656 * Register our acpi event handlers.
657 * XXX should be configurable eg. via userland policy manager.
658 */
659 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
660 sc, ACPI_EVENT_PRI_LAST);
661 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
662 sc, ACPI_EVENT_PRI_LAST);
663
664 /* Flag our initial states. */
665 sc->acpi_enabled = 1;
666 sc->acpi_sstate = ACPI_STATE_S0;
667 sc->acpi_sleep_disabled = 0;
668
669 /* Create the control device */
fef8985e
MD
670 dev_ops_add(&acpi_ops, 0, 0);
671 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
5ed44076
MD
672 "acpi");
673 sc->acpi_dev_t->si_drv1 = sc;
674
675#ifdef ACPI_DEBUGGER
bc01a404 676 debugpoint = kgetenv("debug.acpi.debugger");
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MD
677 if (debugpoint) {
678 if (strcmp(debugpoint, "running") == 0)
679 acpi_EnterDebugger();
728aa6ee 680 kfreeenv(debugpoint);
5ed44076
MD
681 }
682#endif
683
5ed44076
MD
684 if ((error = acpi_machdep_init(dev)))
685 goto out;
686
687 /* Register ACPI again to pass the correct argument of pm_func. */
688 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
689
690 if (!acpi_disabled("bus"))
691 acpi_probe_children(dev);
692
693 error = 0;
694
695 out:
696 ACPI_UNLOCK;
a9e511df 697
ef612539 698 cputimer_intr_pmfixup();
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MD
699 return_VALUE (error);
700}
701
49e48b8a
MD
702static int
703acpi_shutdown(device_t dev)
704{
838bef54
YT
705 /* Allow children to shutdown first. */
706 bus_generic_shutdown(dev);
49e48b8a
MD
707
708 /* Disable all wake GPEs not appropriate for reboot/poweroff. */
709 acpi_wake_limit_walk(ACPI_STATE_S5);
710 return (0);
711}
712
f9d8cd12 713static void
c436375a 714acpi_quirks_set(void)
f9d8cd12 715{
e1eeedd0 716 ACPI_TABLE_HEADER *rsdt;
f9d8cd12
MD
717 struct acpi_quirks *quirk;
718 char *env, *tmp;
719 int len;
720
721 /*
722 * If the user loaded a custom table or disabled "quirks", leave
723 * the settings alone.
724 */
725 len = 0;
bc01a404 726 if ((env = kgetenv("acpi_dsdt_load")) != NULL) {
f9d8cd12
MD
727 /* XXX No strcasecmp but this is good enough. */
728 if (*env == 'Y' || *env == 'y')
729 goto out;
54ca5b45 730 kfreeenv(env);
f9d8cd12 731 }
bc01a404 732 if ((env = kgetenv("debug.acpi.disabled")) != NULL) {
f9d8cd12
MD
733 if (strstr("quirks", env) != NULL)
734 goto out;
735 len = strlen(env);
736 }
737
738 /*
739 * Search through our quirk table and concatenate the disabled
740 * values with whatever we find.
741 */
e1eeedd0
YT
742 if ((rsdt = acpi_map_rsdt_header()) == NULL)
743 goto out;
f9d8cd12 744 for (quirk = acpi_quirks_table; quirk->OemId; quirk++) {
e1eeedd0
YT
745 if (!strncmp(rsdt->OemId, quirk->OemId, strlen(quirk->OemId)) &&
746 (rsdt->OemRevision == quirk->OemRevision ||
f9d8cd12
MD
747 quirk->OemRevision == ACPI_OEM_REV_ANY)) {
748 len += strlen(quirk->value) + 2;
efda3bd0 749 if ((tmp = kmalloc(len, M_TEMP, M_NOWAIT)) == NULL)
f9d8cd12 750 goto out;
f8c7a42d 751 ksprintf(tmp, "%s %s", env ? env : "", quirk->value);
54ca5b45 752 ksetenv("debug.acpi.disabled", tmp);
efda3bd0 753 kfree(tmp, M_TEMP);
f9d8cd12
MD
754 break;
755 }
756 }
e1eeedd0 757 AcpiOsUnmapMemory(rsdt, sizeof(*rsdt));
f9d8cd12
MD
758
759out:
760 if (env)
54ca5b45 761 kfreeenv(env);
f9d8cd12
MD
762}
763
5ed44076
MD
764/*
765 * Handle a new device being added
766 */
767static device_t
2581072f
MD
768acpi_add_child(device_t bus, device_t parent, int order,
769 const char *name, int unit)
5ed44076
MD
770{
771 struct acpi_device *ad;
772 device_t child;
773
efda3bd0 774 ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_INTWAIT | M_ZERO);
5ed44076
MD
775
776 resource_list_init(&ad->ad_rl);
49e48b8a 777
2581072f 778 child = device_add_child_ordered(parent, order, name, unit);
5ed44076
MD
779 if (child != NULL)
780 device_set_ivars(child, ad);
781 return (child);
782}
783
784static int
785acpi_print_child(device_t bus, device_t child)
786{
787 struct acpi_device *adev = device_get_ivars(child);
788 struct resource_list *rl = &adev->ad_rl;
789 int retval = 0;
790
791 retval += bus_print_child_header(bus, child);
792 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
793 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
794 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
795 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
796 retval += bus_print_child_footer(bus, child);
797
798 return (retval);
799}
800
f9d8cd12
MD
801/* Location hint for devctl(8) */
802static int
803acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
804 size_t buflen)
805{
806 struct acpi_device *dinfo = device_get_ivars(child);
807
808 if (dinfo->ad_handle)
f8c7a42d 809 ksnprintf(buf, buflen, "path=%s", acpi_name(dinfo->ad_handle));
f9d8cd12 810 else
f8c7a42d 811 ksnprintf(buf, buflen, "magic=unknown");
f9d8cd12
MD
812 return (0);
813}
814
815/* PnP information for devctl(8) */
816static int
817acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
818 size_t buflen)
819{
820 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
821 ACPI_DEVICE_INFO *adinfo;
822 struct acpi_device *dinfo = device_get_ivars(child);
823 char *end;
824 int error;
825
826 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
827 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
828
829 if (error)
f8c7a42d 830 ksnprintf(buf, buflen, "Unknown");
f9d8cd12 831 else
f8c7a42d 832 ksnprintf(buf, buflen, "_HID=%s _UID=%lu",
f9d8cd12
MD
833 (adinfo->Valid & ACPI_VALID_HID) ?
834 adinfo->HardwareId.Value : "UNKNOWN",
835 (adinfo->Valid & ACPI_VALID_UID) ?
836 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
837
838 if (adinfo)
839 AcpiOsFree(adinfo);
840
841 return (0);
842}
5ed44076
MD
843
844/*
845 * Handle per-device ivars
846 */
847static int
848acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
849{
850 struct acpi_device *ad;
851
852 if ((ad = device_get_ivars(child)) == NULL) {
e3869ec7 853 kprintf("device has no ivars\n");
5ed44076
MD
854 return (ENOENT);
855 }
856
857 /* ACPI and ISA compatibility ivars */
858 switch(index) {
859 case ACPI_IVAR_HANDLE:
860 *(ACPI_HANDLE *)result = ad->ad_handle;
861 break;
862 case ACPI_IVAR_MAGIC:
863 *(int *)result = ad->ad_magic;
864 break;
865 case ACPI_IVAR_PRIVATE:
866 *(void **)result = ad->ad_private;
867 break;
868 case ISA_IVAR_VENDORID:
869 case ISA_IVAR_SERIAL:
870 case ISA_IVAR_COMPATID:
871 *(int *)result = -1;
872 break;
873 case ISA_IVAR_LOGICALID:
874 *(int *)result = acpi_isa_get_logicalid(child);
875 break;
876 default:
877 return (ENOENT);
878 }
879
880 return (0);
881}
882
883static int
884acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
885{
886 struct acpi_device *ad;
887
888 if ((ad = device_get_ivars(child)) == NULL) {
e3869ec7 889 kprintf("device has no ivars\n");
5ed44076
MD
890 return (ENOENT);
891 }
892
893 switch(index) {
894 case ACPI_IVAR_HANDLE:
895 ad->ad_handle = (ACPI_HANDLE)value;
896 break;
897 case ACPI_IVAR_MAGIC:
898 ad->ad_magic = (int)value;
899 break;
900 case ACPI_IVAR_PRIVATE:
901 ad->ad_private = (void *)value;
902 break;
903 default:
904 panic("bad ivar write request (%d)", index);
905 return (ENOENT);
906 }
907
908 return (0);
909}
910
5ed44076
MD
911/*
912 * Handle child resource allocation/removal
913 */
c8b4f0e6
YT
914static struct resource_list *
915acpi_get_rlist(device_t dev, device_t child)
5ed44076 916{
c8b4f0e6 917 struct acpi_device *ad;
5ed44076 918
c8b4f0e6
YT
919 ad = device_get_ivars(child);
920 return (&ad->ad_rl);
5ed44076
MD
921}
922
923static struct resource *
924acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
c8b4f0e6 925 u_long start, u_long end, u_long count, u_int flags)
5ed44076
MD
926{
927 struct acpi_device *ad = device_get_ivars(child);
928 struct resource_list *rl = &ad->ad_rl;
c8b4f0e6
YT
929 struct resource_list_entry *rle;
930 struct resource *res;
931 struct rman *rm;
932 int needactivate;
933
934 /*
935 * If this is an allocation of the "default" range for a given RID, and
936 * we know what the resources for this device are (i.e., they're on the
937 * child's resource list), use those start/end values.
938 */
939 if (start == 0UL && end == ~0UL) {
940 rle = resource_list_find(rl, type, *rid);
941 if (rle == NULL)
942 return (NULL);
943 start = rle->start;
944 end = rle->end;
945 count = rle->count;
946 }
947
948 /* If we don't manage this address, pass the request up to the parent. */
949 rle = acpi_sysres_find(type, start);
950 if (rle == NULL) {
951 return (BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
952 start, end, count, flags));
953 }
5ed44076 954
c8b4f0e6
YT
955 /* We only handle memory and IO resources through rman. */
956 switch (type) {
957 case SYS_RES_IOPORT:
958 rm = &acpi_rman_io;
959 break;
960 case SYS_RES_MEMORY:
961 rm = &acpi_rman_mem;
962 break;
963 default:
964 panic("acpi_alloc_resource: invalid res type %d", type);
965 }
966
967 /* If we do know it, allocate it from the local pool. */
968 needactivate = flags & RF_ACTIVE;
969 flags &= ~RF_ACTIVE;
970 res = rman_reserve_resource(rm, start, end, count, flags, child);
971 if (res == NULL)
972 return (NULL);
973
974 /* Copy the bus tag from the pre-allocated resource. */
975 rman_set_bustag(res, rman_get_bustag(rle->res));
976 if (type == SYS_RES_IOPORT)
977 rman_set_bushandle(res, res->r_start);
978
979 /* If requested, activate the resource using the parent's method. */
980 if (needactivate)
981 if (bus_activate_resource(child, type, *rid, res) != 0) {
982 rman_release_resource(res);
983 return (NULL);
984 }
985
986 return (res);
5ed44076
MD
987}
988
989static int
c8b4f0e6
YT
990acpi_release_resource(device_t bus, device_t child, int type, int rid,
991 struct resource *r)
5ed44076 992{
c8b4f0e6
YT
993 int ret;
994
995 /*
996 * If we know about this address, deactivate it and release it to the
997 * local pool. If we don't, pass this request up to the parent.
998 */
999 if (acpi_sysres_find(type, rman_get_start(r)) == NULL) {
1000 if (rman_get_flags(r) & RF_ACTIVE) {
1001 ret = bus_deactivate_resource(child, type, rid, r);
1002 if (ret != 0)
1003 return (ret);
1004 }
1005 ret = rman_release_resource(r);
1006 } else
1007 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
5ed44076 1008
c8b4f0e6 1009 return (ret);
5ed44076
MD
1010}
1011
1012/* Allocate an IO port or memory resource, given its GAS. */
1013struct resource *
1ce36465 1014acpi_bus_alloc_gas(device_t dev, int *rid, const ACPI_GENERIC_ADDRESS *gas,
5ebadb2c 1015 u_int flags)
5ed44076
MD
1016{
1017 int type;
1018
e1eeedd0 1019 if (gas == NULL || !ACPI_VALID_ADDRESS(gas->Address) || gas->BitWidth < 8)
5ed44076
MD
1020 return (NULL);
1021
e1eeedd0 1022 switch (gas->SpaceId) {
5ed44076
MD
1023 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1024 type = SYS_RES_MEMORY;
1025 break;
1026 case ACPI_ADR_SPACE_SYSTEM_IO:
1027 type = SYS_RES_IOPORT;
1028 break;
1029 default:
1030 return (NULL);
1031 }
1032
e1eeedd0 1033 bus_set_resource(dev, type, *rid, gas->Address, gas->BitWidth / 8);
5ebadb2c 1034 return (bus_alloc_resource_any(dev, type, rid, RF_ACTIVE | flags));
5ed44076
MD
1035}
1036
1037/*
1038 * Handle ISA-like devices probing for a PnP ID to match.
1039 */
1040#define PNP_EISAID(s) \
1041 ((((s[0] - '@') & 0x1f) << 2) \
1042 | (((s[1] - '@') & 0x18) >> 3) \
1043 | (((s[1] - '@') & 0x07) << 13) \
1044 | (((s[2] - '@') & 0x1f) << 8) \
1045 | (PNP_HEXTONUM(s[4]) << 16) \
1046 | (PNP_HEXTONUM(s[3]) << 20) \
1047 | (PNP_HEXTONUM(s[6]) << 24) \
1048 | (PNP_HEXTONUM(s[5]) << 28))
1049
1050static uint32_t
1051acpi_isa_get_logicalid(device_t dev)
1052{
1053 ACPI_DEVICE_INFO *devinfo;
1054 ACPI_BUFFER buf;
1055 ACPI_HANDLE h;
1056 ACPI_STATUS error;
1057 u_int32_t pnpid;
1058 ACPI_LOCK_DECL;
1059
1060 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1061
1062 pnpid = 0;
1063 buf.Pointer = NULL;
1064 buf.Length = ACPI_ALLOCATE_BUFFER;
1065
1066 ACPI_LOCK;
1067
1068 /* Fetch and validate the HID. */
1069 if ((h = acpi_get_handle(dev)) == NULL)
1070 goto out;
1071 error = AcpiGetObjectInfo(h, &buf);
1072 if (ACPI_FAILURE(error))
1073 goto out;
1074 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1075
1076 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1077 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
1078
1079out:
1080 if (buf.Pointer != NULL)
1081 AcpiOsFree(buf.Pointer);
1082 ACPI_UNLOCK;
1083 return_VALUE (pnpid);
1084}
1085
1086static int
1087acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1088{
1089 ACPI_DEVICE_INFO *devinfo;
1090 ACPI_BUFFER buf;
1091 ACPI_HANDLE h;
1092 ACPI_STATUS error;
1093 uint32_t *pnpid;
1094 int valid, i;
1095 ACPI_LOCK_DECL;
1096
1097 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1098
1099 pnpid = cids;
1100 valid = 0;
1101 buf.Pointer = NULL;
1102 buf.Length = ACPI_ALLOCATE_BUFFER;
1103
1104 ACPI_LOCK;
1105
1106 /* Fetch and validate the CID */
1107 if ((h = acpi_get_handle(dev)) == NULL)
1108 goto out;
1109 error = AcpiGetObjectInfo(h, &buf);
1110 if (ACPI_FAILURE(error))
1111 goto out;
1112 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1113 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1114 goto out;
1115
1116 if (devinfo->CompatibilityId.Count < count)
1117 count = devinfo->CompatibilityId.Count;
1118 for (i = 0; i < count; i++) {
1119 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
1120 continue;
1121 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
1122 valid++;
1123 }
1124
1125out:
1126 if (buf.Pointer != NULL)
1127 AcpiOsFree(buf.Pointer);
1128 ACPI_UNLOCK;
1129 return_VALUE (valid);
1130}
1131
676159d4
HT
1132static char *
1133acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1134{
1135 ACPI_HANDLE h;
1136 int i;
1137
1138 h = acpi_get_handle(dev);
1139 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1140 return (NULL);
1141
1142 /* Try to match one of the array of IDs with a HID or CID. */
1143 for (i = 0; ids[i] != NULL; i++) {
1144 if (acpi_MatchHid(h, ids[i]))
1145 return (ids[i]);
1146 }
1147 return (NULL);
1148}
1149
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MD
1150static int
1151acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1152{
1153 int result, cid_count, i;
1154 uint32_t lid, cids[8];
1155
1156 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1157
1158 /*
1159 * ISA-style drivers attached to ACPI may persist and
1160 * probe manually if we return ENOENT. We never want
1161 * that to happen, so don't ever return it.
1162 */
1163 result = ENXIO;
1164
1165 /* Scan the supplied IDs for a match */
1166 lid = acpi_isa_get_logicalid(child);
1167 cid_count = acpi_isa_get_compatid(child, cids, 8);
1168 while (ids && ids->ip_id) {
1169 if (lid == ids->ip_id) {
1170 result = 0;
1171 goto out;
1172 }
1173 for (i = 0; i < cid_count; i++) {
1174 if (cids[i] == ids->ip_id) {
1175 result = 0;
1176 goto out;
1177 }
1178 }
1179 ids++;
1180 }
1181
1182 out:
1183 return_VALUE (result);
1184}
1185
1186/*
1187 * Scan relevant portions of the ACPI namespace and attach child devices.
1188 *
1189 * Note that we only expect to find devices in the \_PR_, \_TZ_, \_SI_ and
1190 * \_SB_ scopes, and \_PR_ and \_TZ_ become obsolete in the ACPI 2.0 spec.
1191 */
1192static void
1193acpi_probe_children(device_t bus)
1194{
1195 ACPI_HANDLE parent;
1196 ACPI_STATUS status;
5ed44076 1197 int i;
c8b4f0e6 1198 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI", "\\_SB_", NULL};
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MD
1199
1200 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1201 ACPI_ASSERTLOCK;
1202
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MD
1203 /*
1204 * Scan the namespace and insert placeholders for all the devices that
c8b4f0e6 1205 * we find. We also probe/attach any early devices.
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MD
1206 *
1207 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1208 * we want to create nodes for all devices, not just those that are
1209 * currently present. (This assumes that we don't want to create/remove
1210 * devices as they appear, which might be smarter.)
1211 */
1212 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1213 for (i = 0; scopes[i] != NULL; i++) {
1214 status = AcpiGetHandle(ACPI_ROOT_OBJECT, scopes[i], &parent);
1215 if (ACPI_SUCCESS(status)) {
1216 AcpiWalkNamespace(ACPI_TYPE_ANY, parent, 100, acpi_probe_child,
1217 bus, NULL);
1218 }
1219 }
1220
c8b4f0e6
YT
1221 /* Create any static children by calling device identify methods. */
1222 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1223 bus_generic_probe(bus);
1224
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MD
1225 /*
1226 * Scan all of the child devices we have created and let them probe/attach.
1227 */
1228 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1229 bus_generic_attach(bus);
1230
1231 /*
1232 * Some of these children may have attached others as part of their attach
1233 * process (eg. the root PCI bus driver), so rescan.
1234 */
1235 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1236 bus_generic_attach(bus);
1237
49e48b8a
MD
1238 /* Attach wake sysctls. */
1239 acpi_wake_sysctl_walk(bus);
1240
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MD
1241 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1242 return_VOID;
1243}
1244
c8b4f0e6
YT
1245static int
1246acpi_probe_order(ACPI_HANDLE handle, int level, int *order)
1247{
1248 int ret;
1249
1250 ret = 0;
1251 /* IO port and memory system resource holders are first. */
1252 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02")) {
1253 *order = 1;
1254 ret = 1;
1255 }
1256
1257 /* The embedded controller is needed to handle accesses early. */
1258 if (acpi_MatchHid(handle, "PNP0C09")) {
1259 *order = 2;
1260 ret = 1;
1261 }
1262
1263 *order = (level + 1) * 10;
1264 return (ret);
1265}
1266
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MD
1267/*
1268 * Evaluate a child device and determine whether we might attach a device to
1269 * it.
1270 */
1271static ACPI_STATUS
1272acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1273{
1274 ACPI_OBJECT_TYPE type;
c8b4f0e6
YT
1275 device_t child, bus;
1276 int order, probe_now;
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MD
1277
1278 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1279
1280 /* Skip this device if we think we'll have trouble with it. */
7beeeb16
YT
1281 if (acpi_avoid(handle)) {
1282 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "not scanning '%s'\n",
1283 acpi_name(handle)));
5ed44076 1284 return_ACPI_STATUS (AE_OK);
7beeeb16 1285 }
5ed44076 1286
c8b4f0e6 1287 bus = (device_t)context;
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MD
1288 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1289 switch(type) {
1290 case ACPI_TYPE_DEVICE:
1291 case ACPI_TYPE_PROCESSOR:
1292 case ACPI_TYPE_THERMAL:
1293 case ACPI_TYPE_POWER:
1294 if (acpi_disabled("children"))
1295 break;
1296
1297 /*
1298 * Create a placeholder device for this node. Sort the placeholder
1299 * so that the probe/attach passes will run breadth-first.
1300 */
1301 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n",
1302 acpi_name(handle)));
c8b4f0e6
YT
1303 probe_now = acpi_probe_order(handle, level, &order);
1304 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
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MD
1305 if (child == NULL)
1306 break;
c8b4f0e6
YT
1307
1308 /* Associate the handle with the device_t and vice versa. */
5ed44076 1309 acpi_set_handle(child, handle);
c8b4f0e6 1310 AcpiAttachData(handle, acpi_fake_objhandler, child);
5ed44076 1311
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MD
1312 /* Check if the device can generate wake events. */
1313 if (ACPI_SUCCESS(AcpiEvaluateObject(handle, "_PRW", NULL, NULL)))
1314 device_set_flags(child, ACPI_FLAG_WAKE_CAPABLE);
1315
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MD
1316 /*
1317 * Check that the device is present. If it's not present,
1318 * leave it disabled (so that we have a device_t attached to
1319 * the handle, but we don't probe it).
1320 */
1321 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1322 device_disable(child);
1323 break;
1324 }
1325
1326 /*
1327 * Get the device's resource settings and attach them.
1328 * Note that if the device has _PRS but no _CRS, we need
1329 * to decide when it's appropriate to try to configure the
1330 * device. Ignore the return value here; it's OK for the
1331 * device not to have any resources.
1332 */
f9d8cd12 1333 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
5ed44076 1334
c8b4f0e6
YT
1335 /* If order was overridden, probe/attach now rather than later. */
1336 if (probe_now)
1337 device_probe_and_attach(child);
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MD
1338 break;
1339 }
1340 }
1341
1342 return_ACPI_STATUS (AE_OK);
1343}
1344
1345static void
1346acpi_shutdown_pre_sync(void *arg, int howto)
1347{
1348 struct acpi_softc *sc = arg;
1349
1350 ACPI_ASSERTLOCK;
1351
1352 /*
1353 * Disable all ACPI events before soft off, otherwise the system
1354 * will be turned on again on some laptops.
1355 *
1356 * XXX this should probably be restricted to masking some events just
1357 * before powering down, since we may still need ACPI during the
1358 * shutdown process.
1359 */
1360 if (sc->acpi_disable_on_poweroff)
1361 acpi_Disable(sc);
1362}
1363
c8b4f0e6
YT
1364/*
1365 * AcpiAttachData() requires an object handler but never uses it. This is a
1366 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1367 */
1368void
1369acpi_fake_objhandler(ACPI_HANDLE h, UINT32 fn, void *data)
1370{
1371}
1372
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MD
1373static void
1374acpi_shutdown_final(void *arg, int howto)
1375{
1376 ACPI_STATUS status;
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MD
1377 ACPI_ASSERTLOCK;
1378
f9d8cd12
MD
1379 /*
1380 * If powering off, run the actual shutdown code on each processor.
1381 * It will only perform the shutdown on the BSP. Some chipsets do
1382 * not power off the system correctly if called from an AP.
1383 */
5ed44076 1384 if ((howto & RB_POWEROFF) != 0) {
f9d8cd12 1385 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
5ed44076 1386 if (ACPI_FAILURE(status)) {
e3869ec7 1387 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
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MD
1388 AcpiFormatException(status));
1389 return;
1390 }
e3869ec7 1391 kprintf("Powering system off using ACPI\n");
f9d8cd12 1392 acpi_shutdown_poweroff(NULL);
5ed44076 1393 } else {
e3869ec7 1394 kprintf("Shutting down ACPI\n");
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MD
1395 AcpiTerminate();
1396 }
1397}
1398
f9d8cd12
MD
1399/*
1400 * Since this function may be called with locks held or in an unknown
1401 * context, it cannot allocate memory, acquire locks, sleep, etc.
1402 */
1403static void
1404acpi_shutdown_poweroff(void *arg)
1405{
1406 ACPI_STATUS status;
1407
1408 ACPI_ASSERTLOCK;
1409
1410 /* Only attempt to power off if this is the BSP (cpuid 0). */
1411 if (mdcpu->mi.gd_cpuid != 0)
1412 return;
1413
1414 ACPI_DISABLE_IRQS();
1415 status = AcpiEnterSleepState(ACPI_STATE_S5);
1416 if (ACPI_FAILURE(status)) {
e3869ec7 1417 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status));
f9d8cd12
MD
1418 } else {
1419 DELAY(1000000);
e3869ec7 1420 kprintf("ACPI power-off failed - timeout\n");
f9d8cd12
MD
1421 }
1422}
1423
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MD
1424static void
1425acpi_enable_fixed_events(struct acpi_softc *sc)
1426{
1427 static int first_time = 1;
1428
1429 ACPI_ASSERTLOCK;
1430
1431 /* Enable and clear fixed events and install handlers. */
e1eeedd0 1432 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
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MD
1433 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1434 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1435 acpi_event_power_button_sleep, sc);
1436 if (first_time)
1437 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1438 }
e1eeedd0 1439 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
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MD
1440 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1441 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1442 acpi_event_sleep_button_sleep, sc);
1443 if (first_time)
1444 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1445 }
1446
1447 first_time = 0;
1448}
1449
1450/*
1451 * Returns true if the device is actually present and should
1452 * be attached to. This requires the present, enabled, UI-visible
1453 * and diagnostics-passed bits to be set.
1454 */
1455BOOLEAN
1456acpi_DeviceIsPresent(device_t dev)
1457{
1458 ACPI_DEVICE_INFO *devinfo;
1459 ACPI_HANDLE h;
1460 ACPI_BUFFER buf;
1461 ACPI_STATUS error;
1462 int ret;
1463
1464 ACPI_ASSERTLOCK;
1465
1466 ret = FALSE;
1467 if ((h = acpi_get_handle(dev)) == NULL)
1468 return (FALSE);
1469 buf.Pointer = NULL;
1470 buf.Length = ACPI_ALLOCATE_BUFFER;
1471 error = AcpiGetObjectInfo(h, &buf);
1472 if (ACPI_FAILURE(error))
1473 return (FALSE);
1474 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1475
1476 /* If no _STA method, must be present */
1477 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1478 ret = TRUE;
1479
1480 /* Return true for 'present' and 'functioning' */
1481 if ((devinfo->CurrentStatus & 0x9) == 0x9)
1482 ret = TRUE;
1483
1484 AcpiOsFree(buf.Pointer);
1485 return (ret);
1486}
1487
1488/*
1489 * Returns true if the battery is actually present and inserted.
1490 */
1491BOOLEAN
1492acpi_BatteryIsPresent(device_t dev)
1493{
1494 ACPI_DEVICE_INFO *devinfo;
1495 ACPI_HANDLE h;
1496 ACPI_BUFFER buf;
1497 ACPI_STATUS error;
1498 int ret;
1499
1500 ACPI_ASSERTLOCK;
1501
1502 ret = FALSE;
1503 if ((h = acpi_get_handle(dev)) == NULL)
1504 return (FALSE);
1505 buf.Pointer = NULL;
1506 buf.Length = ACPI_ALLOCATE_BUFFER;
1507 error = AcpiGetObjectInfo(h, &buf);
1508 if (ACPI_FAILURE(error))
1509 return (FALSE);
1510 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1511
1512 /* If no _STA method, must be present */
1513 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1514 ret = TRUE;
1515
1516 /* Return true for 'present' and 'functioning' */
1517 if ((devinfo->CurrentStatus & 0x19) == 0x19)
1518 ret = TRUE;
1519
1520 AcpiOsFree(buf.Pointer);
1521 return (ret);
1522}
1523
1524/*
c8b4f0e6 1525 * Match a HID string against a handle
5ed44076
MD
1526 */
1527BOOLEAN
c8b4f0e6 1528acpi_MatchHid(ACPI_HANDLE h, char *hid)
5ed44076
MD
1529{
1530 ACPI_DEVICE_INFO *devinfo;
5ed44076
MD
1531 ACPI_BUFFER buf;
1532 ACPI_STATUS error;
1533 int ret, i;
1534
1535 ACPI_ASSERTLOCK;
1536
1537 ret = FALSE;
c8b4f0e6
YT
1538 if (hid == NULL || h == NULL)
1539 return (ret);
5ed44076
MD
1540 buf.Pointer = NULL;
1541 buf.Length = ACPI_ALLOCATE_BUFFER;
1542 error = AcpiGetObjectInfo(h, &buf);
1543 if (ACPI_FAILURE(error))
c8b4f0e6 1544 return (ret);
5ed44076
MD
1545 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1546
1547 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1548 strcmp(hid, devinfo->HardwareId.Value) == 0)
1549 ret = TRUE;
1550 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1551 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1552 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1553 ret = TRUE;
1554 break;
1555 }
1556 }
1557 }
1558
1559 AcpiOsFree(buf.Pointer);
1560 return (ret);
1561}
1562
1563/*
1564 * Return the handle of a named object within our scope, ie. that of (parent)
1565 * or one if its parents.
1566 */
1567ACPI_STATUS
1568acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1569{
1570 ACPI_HANDLE r;
1571 ACPI_STATUS status;
1572
1573 ACPI_ASSERTLOCK;
1574
1575 /* Walk back up the tree to the root */
1576 for (;;) {
1577 status = AcpiGetHandle(parent, path, &r);
1578 if (ACPI_SUCCESS(status)) {
1579 *result = r;
1580 return (AE_OK);
1581 }
1582 if (status != AE_NOT_FOUND)
1583 return (AE_OK);
1584 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1585 return (AE_NOT_FOUND);
1586 parent = r;
1587 }
1588}
1589
f9d8cd12
MD
1590/* Find the difference between two PM tick counts. */
1591uint32_t
1592acpi_TimerDelta(uint32_t end, uint32_t start)
1593{
1594 uint32_t delta;
1595
1596 if (end >= start)
1597 delta = end - start;
e1eeedd0 1598 else if ((AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER) == 0)
f9d8cd12
MD
1599 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
1600 else
1601 delta = ((0xFFFFFFFF - start) + end + 1);
1602 return (delta);
1603}
1604
5ed44076
MD
1605/*
1606 * Allocate a buffer with a preset data size.
1607 */
1608ACPI_BUFFER *
1609acpi_AllocBuffer(int size)
1610{
1611 ACPI_BUFFER *buf;
1612
efda3bd0 1613 buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_INTWAIT);
5ed44076
MD
1614 buf->Length = size;
1615 buf->Pointer = (void *)(buf + 1);
1616 return (buf);
1617}
1618
f9d8cd12
MD
1619ACPI_STATUS
1620acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1621{
1622 ACPI_OBJECT arg1;
1623 ACPI_OBJECT_LIST args;
1624
1625 ACPI_ASSERTLOCK;
1626
1627 arg1.Type = ACPI_TYPE_INTEGER;
1628 arg1.Integer.Value = number;
1629 args.Count = 1;
1630 args.Pointer = &arg1;
1631
1632 return (AcpiEvaluateObject(handle, path, &args, NULL));
1633}
1634
5ed44076
MD
1635/*
1636 * Evaluate a path that should return an integer.
1637 */
1638ACPI_STATUS
f9d8cd12 1639acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
5ed44076
MD
1640{
1641 ACPI_STATUS status;
1642 ACPI_BUFFER buf;
1643 ACPI_OBJECT param;
1644
1645 ACPI_ASSERTLOCK;
1646
1647 if (handle == NULL)
1648 handle = ACPI_ROOT_OBJECT;
1649
1650 /*
1651 * Assume that what we've been pointed at is an Integer object, or
1652 * a method that will return an Integer.
1653 */
1654 buf.Pointer = &param;
1655 buf.Length = sizeof(param);
1656 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1657 if (ACPI_SUCCESS(status)) {
1658 if (param.Type == ACPI_TYPE_INTEGER)
1659 *number = param.Integer.Value;
1660 else
1661 status = AE_TYPE;
1662 }
1663
1664 /*
1665 * In some applications, a method that's expected to return an Integer
1666 * may instead return a Buffer (probably to simplify some internal
1667 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1668 * convert it into an Integer as best we can.
1669 *
1670 * This is a hack.
1671 */
1672 if (status == AE_BUFFER_OVERFLOW) {
1673 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1674 status = AE_NO_MEMORY;
1675 } else {
1676 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1677 if (ACPI_SUCCESS(status))
1678 status = acpi_ConvertBufferToInteger(&buf, number);
1679 AcpiOsFree(buf.Pointer);
1680 }
1681 }
1682 return (status);
1683}
1684
1685ACPI_STATUS
f9d8cd12 1686acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
5ed44076
MD
1687{
1688 ACPI_OBJECT *p;
f9d8cd12 1689 UINT8 *val;
5ed44076
MD
1690 int i;
1691
1692 p = (ACPI_OBJECT *)bufp->Pointer;
1693 if (p->Type == ACPI_TYPE_INTEGER) {
1694 *number = p->Integer.Value;
1695 return (AE_OK);
1696 }
1697 if (p->Type != ACPI_TYPE_BUFFER)
1698 return (AE_TYPE);
1699 if (p->Buffer.Length > sizeof(int))
1700 return (AE_BAD_DATA);
1701
1702 *number = 0;
f9d8cd12 1703 val = p->Buffer.Pointer;
5ed44076 1704 for (i = 0; i < p->Buffer.Length; i++)
f9d8cd12 1705 *number += val[i] << (i * 8);
5ed44076
MD
1706 return (AE_OK);
1707}
1708
1709/*
1710 * Iterate over the elements of an a package object, calling the supplied
1711 * function for each element.
1712 *
1713 * XXX possible enhancement might be to abort traversal on error.
1714 */
1715ACPI_STATUS
1716acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
1717 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
1718{
1719 ACPI_OBJECT *comp;
1720 int i;
1721
1722 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
1723 return (AE_BAD_PARAMETER);
1724
1725 /* Iterate over components */
1726 i = 0;
1727 comp = pkg->Package.Elements;
1728 for (; i < pkg->Package.Count; i++, comp++)
1729 func(comp, arg);
1730
1731 return (AE_OK);
1732}
1733
1734/*
1735 * Find the (index)th resource object in a set.
1736 */
1737ACPI_STATUS
1738acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
1739{
1740 ACPI_RESOURCE *rp;
1741 int i;
1742
1743 rp = (ACPI_RESOURCE *)buf->Pointer;
1744 i = index;
1745 while (i-- > 0) {
1746 /* Range check */
1747 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1748 return (AE_BAD_PARAMETER);
1749
1750 /* Check for terminator */
e1eeedd0 1751 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
5ed44076
MD
1752 return (AE_NOT_FOUND);
1753 rp = ACPI_NEXT_RESOURCE(rp);
1754 }
1755 if (resp != NULL)
1756 *resp = rp;
1757
1758 return (AE_OK);
1759}
1760
1761/*
1762 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
1763 *
1764 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
1765 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
1766 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
1767 * resources.
1768 */
1769#define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
1770
1771ACPI_STATUS
1772acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
1773{
1774 ACPI_RESOURCE *rp;
1775 void *newp;
1776
1777 /* Initialise the buffer if necessary. */
1778 if (buf->Pointer == NULL) {
1779 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
1780 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
1781 return (AE_NO_MEMORY);
1782 rp = (ACPI_RESOURCE *)buf->Pointer;
e1eeedd0 1783 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
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1784 rp->Length = 0;
1785 }
1786 if (res == NULL)
1787 return (AE_OK);
1788
1789 /*
1790 * Scan the current buffer looking for the terminator.
1791 * This will either find the terminator or hit the end
1792 * of the buffer and return an error.
1793 */
1794 rp = (ACPI_RESOURCE *)buf->Pointer;
1795 for (;;) {
1796 /* Range check, don't go outside the buffer */
1797 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
1798 return (AE_BAD_PARAMETER);
e1eeedd0 1799 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
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1800 break;
1801 rp = ACPI_NEXT_RESOURCE(rp);
1802 }
1803
1804 /*
1805 * Check the size of the buffer and expand if required.
1806 *
1807 * Required size is:
1808 * size of existing resources before terminator +
1809 * size of new resource and header +
1810 * size of terminator.
1811 *
1812 * Note that this loop should really only run once, unless
1813 * for some reason we are stuffing a *really* huge resource.
1814 */
1815 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
e1eeedd0
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1816 res->Length + ACPI_RS_SIZE_NO_DATA +
1817 ACPI_RS_SIZE_MIN) >= buf->Length) {
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1818 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
1819 return (AE_NO_MEMORY);
1820 bcopy(buf->Pointer, newp, buf->Length);
1821 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
1822 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
1823 AcpiOsFree(buf->Pointer);
1824 buf->Pointer = newp;
1825 buf->Length += buf->Length;
1826 }
1827
1828 /* Insert the new resource. */
e1eeedd0 1829 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
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1830
1831 /* And add the terminator. */
1832 rp = ACPI_NEXT_RESOURCE(rp);
e1eeedd0 1833 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
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1834 rp->Length = 0;
1835
1836 return (AE_OK);
1837}
1838
1839/*
1840 * Set interrupt model.
1841 */
1842ACPI_STATUS
1843acpi_SetIntrModel(int model)
1844{
f9d8cd12 1845 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
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1846}
1847
1848#define ACPI_MINIMUM_AWAKETIME 5
1849
1850static void
1851acpi_sleep_enable(void *arg)
1852{
1853 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
1854}
1855
1856/*
1857 * Set the system sleep state
1858 *
1859 * Currently we support S1-S5 but S4 is only S4BIOS
1860 */
1861ACPI_STATUS
1862acpi_SetSleepState(struct acpi_softc *sc, int state)
1863{
1864 ACPI_STATUS status = AE_OK;
1865 UINT8 TypeA;
1866 UINT8 TypeB;
1867
1868 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
1869 ACPI_ASSERTLOCK;
1870
1871 /* Avoid reentry if already attempting to suspend. */
1872 if (sc->acpi_sstate != ACPI_STATE_S0)
1873 return_ACPI_STATUS (AE_BAD_PARAMETER);
1874
1875 /* We recently woke up so don't suspend again for a while. */
1876 if (sc->acpi_sleep_disabled)
1877 return_ACPI_STATUS (AE_OK);
1878
1879 switch (state) {
1880 case ACPI_STATE_S1:
1881 case ACPI_STATE_S2:
1882 case ACPI_STATE_S3:
1883 case ACPI_STATE_S4:
1884 status = AcpiGetSleepTypeData((UINT8)state, &TypeA, &TypeB);
1885 if (status == AE_NOT_FOUND) {
1886 device_printf(sc->acpi_dev,
1887 "Sleep state S%d not supported by BIOS\n", state);
1888 break;
1889 } else if (ACPI_FAILURE(status)) {
1890 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
1891 AcpiFormatException(status));
1892 break;
1893 }
1894
1895 sc->acpi_sstate = state;
1896 sc->acpi_sleep_disabled = 1;
1897
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1898 /* Disable all wake GPEs not appropriate for this state. */
1899 acpi_wake_limit_walk(state);
1900
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1901 /* Inform all devices that we are going to sleep. */
1902 if (DEVICE_SUSPEND(root_bus) != 0) {
1903 /*
1904 * Re-wake the system.
1905 *
1906 * XXX note that a better two-pass approach with a 'veto' pass
1907 * followed by a "real thing" pass would be better, but the
1908 * current bus interface does not provide for this.
1909 */
1910 DEVICE_RESUME(root_bus);
1911 return_ACPI_STATUS (AE_ERROR);
1912 }
1913
1914 status = AcpiEnterSleepStatePrep(state);
1915 if (ACPI_FAILURE(status)) {
1916 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1917 AcpiFormatException(status));
1918 break;
1919 }
1920
1921 if (sc->acpi_sleep_delay > 0)
1922 DELAY(sc->acpi_sleep_delay * 1000000);
1923
1924 if (state != ACPI_STATE_S1) {
1925 acpi_sleep_machdep(sc, state);
e1eeedd0 1926#if 0
5ed44076 1927 /* AcpiEnterSleepState() may be incomplete, unlock if locked. */
e1eeedd0
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1928 AcpiOsReleaseLock(AcpiGbl_HardwareLock, 1);
1929#endif
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1930 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
1931 if (state == ACPI_STATE_S4)
1932 AcpiEnable();
1933 } else {
1934 status = AcpiEnterSleepState((UINT8)state);
1935 if (ACPI_FAILURE(status)) {
1936 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
1937 AcpiFormatException(status));
1938 break;
1939 }
1940 }
1941 AcpiLeaveSleepState((UINT8)state);
1942 DEVICE_RESUME(root_bus);
1943 sc->acpi_sstate = ACPI_STATE_S0;
1944 acpi_enable_fixed_events(sc);
1945 break;
1946 case ACPI_STATE_S5:
1947 /*
1948 * Shut down cleanly and power off. This will call us back through the
1949 * shutdown handlers.
1950 */
1951 shutdown_nice(RB_POWEROFF);
1952 break;
1953 case ACPI_STATE_S0:
1954 default:
1955 status = AE_BAD_PARAMETER;
1956 break;
1957 }
1958
1959 /* Disable a second sleep request for a short period */
1960 if (sc->acpi_sleep_disabled)
edf6eb70
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1961 callout_reset(&sc->acpi_sleep_timer, hz * ACPI_MINIMUM_AWAKETIME,
1962 acpi_sleep_enable, sc);
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1963
1964 return_ACPI_STATUS (status);
1965}
1966
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1967/* Initialize a device's wake GPE. */
1968int
1969acpi_wake_init(device_t dev, int type)
1970{
1971 struct acpi_prw_data prw;
1972
1973 /* Check that the device can wake the system. */
1974 if ((device_get_flags(dev) & ACPI_FLAG_WAKE_CAPABLE) == 0)
1975 return (ENXIO);
1976
1977 /* Evaluate _PRW to find the GPE. */
1978 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
1979 return (ENXIO);
1980
1981 /* Set the requested type for the GPE (runtime, wake, or both). */
1982 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
1983 device_printf(dev, "set GPE type failed\n");
1984 return (ENXIO);
1985 }
1986
1987 return (0);
1988}
1989
1990/* Enable or disable the device's wake GPE. */
1991int
1992acpi_wake_set_enable(device_t dev, int enable)
1993{
1994 struct acpi_prw_data prw;
1995 ACPI_HANDLE handle;
1996 ACPI_STATUS status;
1997 int flags;
1998
1999 /* Make sure the device supports waking the system. */
2000 flags = device_get_flags(dev);
2001 handle = acpi_get_handle(dev);
2002 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
2003 return (ENXIO);
2004
2005 /* Evaluate _PRW to find the GPE. */
2006 if (acpi_parse_prw(handle, &prw) != 0)
2007 return (ENXIO);
2008
2009 if (enable) {
2010 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2011 if (ACPI_FAILURE(status)) {
2012 device_printf(dev, "enable wake failed\n");
2013 return (ENXIO);
2014 }
2015 device_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2016 } else {
2017 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2018 if (ACPI_FAILURE(status)) {
2019 device_printf(dev, "disable wake failed\n");
2020 return (ENXIO);
2021 }
2022 device_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2023 }
2024
2025 return (0);
2026}
2027
2028/* Configure a device's GPE appropriately for the new sleep state. */
2029int
2030acpi_wake_sleep_prep(device_t dev, int sstate)
2031{
2032 struct acpi_prw_data prw;
2033 ACPI_HANDLE handle;
2034 int flags;
2035
2036 /* Check that this is an ACPI device and get its GPE. */
2037 flags = device_get_flags(dev);
2038 handle = acpi_get_handle(dev);
2039 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
2040 return (ENXIO);
2041
2042 /* Evaluate _PRW to find the GPE. */
2043 if (acpi_parse_prw(handle, &prw) != 0)
2044 return (ENXIO);
2045
2046 /*
2047 * TBD: All Power Resources referenced by elements 2 through N
2048 * of the _PRW object are put into the ON state.
2049 */
2050
2051 /*
2052 * If the user requested that this device wake the system and the next
2053 * sleep state is valid for this GPE, enable it and the device's wake
2054 * capability. The sleep state must be less than (i.e., higher power)
2055 * or equal to the value specified by _PRW. Return early, leaving
2056 * the appropriate power resources enabled.
2057 */
2058 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0 &&
2059 sstate <= prw.lowest_wake) {
2060 if (bootverbose)
2061 device_printf(dev, "wake_prep enabled gpe %#x for state %d\n",
2062 prw.gpe_bit, sstate);
2063 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2064 acpi_SetInteger(handle, "_PSW", 1);
2065 return (0);
2066 }
2067
2068 /*
2069 * If the device wake was disabled or this sleep state is too low for
2070 * this device, disable its wake capability and GPE.
2071 */
2072 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2073 acpi_SetInteger(handle, "_PSW", 0);
2074 if (bootverbose)
2075 device_printf(dev, "wake_prep disabled gpe %#x for state %d\n",
2076 prw.gpe_bit, sstate);
2077
2078 /*
2079 * TBD: All Power Resources referenced by elements 2 through N
2080 * of the _PRW object are put into the OFF state.
2081 */
2082
2083 return (0);
2084}
2085
2086/* Re-enable GPEs after wake. */
2087int
2088acpi_wake_run_prep(device_t dev)
2089{
2090 struct acpi_prw_data prw;
2091 ACPI_HANDLE handle;
2092 int flags;
2093
2094 /* Check that this is an ACPI device and get its GPE. */
2095 flags = device_get_flags(dev);
2096 handle = acpi_get_handle(dev);
2097 if ((flags & ACPI_FLAG_WAKE_CAPABLE) == 0 || handle == NULL)
2098 return (ENXIO);
2099
2100 /* Evaluate _PRW to find the GPE. */
2101 if (acpi_parse_prw(handle, &prw) != 0)
2102 return (ENXIO);
2103
2104 /*
2105 * TBD: Be sure all Power Resources referenced by elements 2 through N
2106 * of the _PRW object are in the ON state.
2107 */
2108
2109 /* Disable wake capability and if the user requested, enable the GPE. */
2110 acpi_SetInteger(handle, "_PSW", 0);
2111 if ((flags & ACPI_FLAG_WAKE_ENABLED) != 0)
2112 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2113 return (0);
2114}
2115
2116static ACPI_STATUS
2117acpi_wake_limit(ACPI_HANDLE h, UINT32 level, void *context, void **status)
2118{
2119 struct acpi_prw_data prw;
2120 int *sstate;
2121
2122 /* It's ok not to have _PRW if the device can't wake the system. */
2123 if (acpi_parse_prw(h, &prw) != 0)
2124 return (AE_OK);
2125
2126 sstate = (int *)context;
2127 if (*sstate > prw.lowest_wake)
2128 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2129
2130 return (AE_OK);
2131}
2132
2133/* Walk all system devices, disabling them if necessary for sstate. */
2134static int
2135acpi_wake_limit_walk(int sstate)
2136{
2137 ACPI_HANDLE sb_handle;
2138
2139 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
2140 AcpiWalkNamespace(ACPI_TYPE_ANY, sb_handle, 100,
2141 acpi_wake_limit, &sstate, NULL);
2142 return (0);
2143}
2144
2145/* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2146static int
2147acpi_wake_sysctl_walk(device_t dev)
2148{
2149 int error, i, numdevs;
2150 device_t *devlist;
2151 device_t child;
2152
2153 error = device_get_children(dev, &devlist, &numdevs);
2154 if (error != 0 || numdevs == 0)
2155 return (error);
2156 for (i = 0; i < numdevs; i++) {
2157 child = devlist[i];
2158 if (!device_is_attached(child))
2159 continue;
2160 if (device_get_flags(child) & ACPI_FLAG_WAKE_CAPABLE) {
2161#ifdef dfly_notyet
2162 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2163 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2164 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2165 acpi_wake_set_sysctl, "I", "Device set to wake the system");
2166#endif /* dfly_notyet */
2167 }
2168 acpi_wake_sysctl_walk(child);
2169 }
efda3bd0 2170 kfree(devlist, M_TEMP);
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MD
2171
2172 return (0);
2173}
2174
edf5636b 2175#ifdef dfly_notyet
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2176/* Enable or disable wake from userland. */
2177static int
2178acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2179{
2180 int enable, error;
2181 device_t dev;
2182
2183 dev = (device_t)arg1;
2184 enable = (device_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2185
2186 error = sysctl_handle_int(oidp, &enable, 0, req);
2187 if (error != 0 || req->newptr == NULL)
2188 return (error);
2189 if (enable != 0 && enable != 1)
2190 return (EINVAL);
2191
2192 return (acpi_wake_set_enable(dev, enable));
2193}
edf5636b 2194#endif /* dfly_notyet */
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MD
2195
2196/* Parse a device's _PRW into a structure. */
2197static int
2198acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2199{
2200 ACPI_STATUS status;
2201 ACPI_BUFFER prw_buffer;
2202 ACPI_OBJECT *res, *res2;
2203 int error;
2204
2205 if (h == NULL || prw == NULL)
2206 return (EINVAL);
2207
2208 /*
2209 * The _PRW object (7.2.9) is only required for devices that have the
2210 * ability to wake the system from a sleeping state.
2211 */
2212 error = EINVAL;
2213 prw_buffer.Pointer = NULL;
2214 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2215 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2216 if (ACPI_FAILURE(status))
2217 return (ENOENT);
2218 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2219 if (res == NULL)
2220 return (ENOENT);
2221 if (!ACPI_PKG_VALID(res, 2))
2222 goto out;
2223
2224 /*
2225 * Element 1 of the _PRW object:
2226 * The lowest power system sleeping state that can be entered while still
2227 * providing wake functionality. The sleeping state being entered must
2228 * be less than (i.e., higher power) or equal to this value.
2229 */
2230 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2231 goto out;
2232
2233 /*
2234 * Element 0 of the _PRW object:
2235 */
2236 switch (res->Package.Elements[0].Type) {
2237 case ACPI_TYPE_INTEGER:
2238 /*
2239 * If the data type of this package element is numeric, then this
2240 * _PRW package element is the bit index in the GPEx_EN, in the
2241 * GPE blocks described in the FADT, of the enable bit that is
2242 * enabled for the wake event.
2243 */
2244 prw->gpe_handle = NULL;
2245 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2246 error = 0;
2247 break;
2248 case ACPI_TYPE_PACKAGE:
2249 /*
2250 * If the data type of this package element is a package, then this
2251 * _PRW package element is itself a package containing two
2252 * elements. The first is an object reference to the GPE Block
2253 * device that contains the GPE that will be triggered by the wake
2254 * event. The second element is numeric and it contains the bit
2255 * index in the GPEx_EN, in the GPE Block referenced by the
2256 * first element in the package, of the enable bit that is enabled for
2257 * the wake event.
2258 *
2259 * For example, if this field is a package then it is of the form:
2260 * Package() {\_SB.PCI0.ISA.GPE, 2}
2261 */
2262 res2 = &res->Package.Elements[0];
2263 if (!ACPI_PKG_VALID(res2, 2))
2264 goto out;
2265 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2266 if (prw->gpe_handle == NULL)
2267 goto out;
2268 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2269 goto out;
2270 error = 0;
2271 break;
2272 default:
2273 goto out;
2274 }
2275
2276 /* XXX No power resource handling yet. */
2277 prw->power_res = NULL;
2278
2279out:
2280 if (prw_buffer.Pointer != NULL)
2281 AcpiOsFree(prw_buffer.Pointer);
2282 return (error);
2283}
2284
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MD
2285/*
2286 * Enable/Disable ACPI
2287 */
2288ACPI_STATUS
2289acpi_Enable(struct acpi_softc *sc)
2290{
2291 ACPI_STATUS status;
2292 u_int32_t flags;
2293
2294 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2295 ACPI_ASSERTLOCK;
2296
2297 flags = ACPI_NO_ADDRESS_SPACE_INIT | ACPI_NO_HARDWARE_INIT |
2298 ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
2299 if (!sc->acpi_enabled)
2300 status = AcpiEnableSubsystem(flags);
2301 else
2302 status = AE_OK;
2303
2304 if (status == AE_OK)
2305 sc->acpi_enabled = 1;
2306
2307 return_ACPI_STATUS (status);
2308}
2309
2310ACPI_STATUS
2311acpi_Disable(struct acpi_softc *sc)
2312{
2313 ACPI_STATUS status;
2314
2315 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2316 ACPI_ASSERTLOCK;
2317
2318 if (sc->acpi_enabled)
2319 status = AcpiDisable();
2320 else
2321 status = AE_OK;
2322
2323 if (status == AE_OK)
2324 sc->acpi_enabled = 0;
2325
2326 return_ACPI_STATUS (status);
2327}
2328
2329/*
2330 * ACPI Event Handlers
2331 */
2332
2333/* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2334
2335static void
2336acpi_system_eventhandler_sleep(void *arg, int state)
2337{
2338 ACPI_LOCK_DECL;
2339 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2340
2341 ACPI_LOCK;
2342 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
2343 acpi_SetSleepState((struct acpi_softc *)arg, state);
2344 ACPI_UNLOCK;
2345 return_VOID;
2346}
2347
2348static void
2349acpi_system_eventhandler_wakeup(void *arg, int state)
2350{
2351 ACPI_LOCK_DECL;
2352 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2353
2354 /* Well, what to do? :-) */
2355
2356 ACPI_LOCK;
2357 ACPI_UNLOCK;
2358
2359 return_VOID;
2360}
2361
2362/*
2363 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2364 */
2365UINT32
2366acpi_event_power_button_sleep(void *context)
2367{
2368 struct acpi_softc *sc = (struct acpi_softc *)context;
2369
2370 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2371
2372 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2373
2374 return_VALUE (ACPI_INTERRUPT_HANDLED);
2375}
2376
2377UINT32
2378acpi_event_power_button_wake(void *context)
2379{
2380 struct acpi_softc *sc = (struct acpi_softc *)context;
2381
2382 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2383
2384 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2385
2386 return_VALUE (ACPI_INTERRUPT_HANDLED);
2387}
2388
2389UINT32
2390acpi_event_sleep_button_sleep(void *context)
2391{
2392 struct acpi_softc *sc = (struct acpi_softc *)context;
2393
2394 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2395
2396 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2397
2398 return_VALUE (ACPI_INTERRUPT_HANDLED);
2399}
2400
2401UINT32
2402acpi_event_sleep_button_wake(void *context)
2403{
2404 struct acpi_softc *sc = (struct acpi_softc *)context;
2405
2406 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2407
2408 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2409
2410 return_VALUE (ACPI_INTERRUPT_HANDLED);
2411}
2412
2413/*
2414 * XXX This is kinda ugly, and should not be here.
2415 */
2416struct acpi_staticbuf {
2417 ACPI_BUFFER buffer;
2418 char data[512];
2419};
2420
2421char *
2422acpi_name(ACPI_HANDLE handle)
2423{
2424 static struct acpi_staticbuf buf;
2425
2426 ACPI_ASSERTLOCK;
2427
2428 buf.buffer.Length = 512;
2429 buf.buffer.Pointer = &buf.data[0];
2430
2431 if (ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf.buffer)))
2432 return (buf.buffer.Pointer);
2433
2434 return ("(unknown path)");
2435}
2436
2437/*
2438 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2439 * parts of the namespace.
2440 */
2441int
2442acpi_avoid(ACPI_HANDLE handle)
2443{
2444 char *cp, *env, *np;
2445 int len;
2446
2447 np = acpi_name(handle);
2448 if (*np == '\\')
2449 np++;
bc01a404
MD
2450 if ((env = kgetenv("debug.acpi.avoid.paths")) == NULL &&
2451 (env = kgetenv("debug.acpi.avoid")) == NULL)
5ed44076
MD
2452 return (0);
2453
2454 /* Scan the avoid list checking for a match */
2455 cp = env;
2456 for (;;) {
2457 while ((*cp != 0) && isspace(*cp))
2458 cp++;
2459 if (*cp == 0)
2460 break;
2461 len = 0;
2462 while ((cp[len] != 0) && !isspace(cp[len]))
2463 len++;
2464 if (!strncmp(cp, np, len)) {
728aa6ee 2465 kfreeenv(env);
5ed44076
MD
2466 return(1);
2467 }
2468 cp += len;
2469 }
728aa6ee 2470 kfreeenv(env);
5ed44076
MD
2471
2472 return (0);
2473}
2474
2475/*
2df6e324
MD
2476 * Debugging/bug-avoidance. Disable ACPI subsystem components. Note that
2477 * some components may be disabled by default and can only be enabled
2478 * via acpi_enabled() (debug.acpi.enabled).
5ed44076
MD
2479 */
2480int
2481acpi_disabled(char *subsys)
2482{
2483 char *cp, *env;
2484 int len;
2485
bc01a404 2486 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
5ed44076 2487 return (0);
f9d8cd12 2488 if (strcmp(env, "all") == 0) {
728aa6ee 2489 kfreeenv(env);
5ed44076
MD
2490 return (1);
2491 }
2492
f9d8cd12 2493 /* Scan the disable list, checking for a match. */
5ed44076
MD
2494 cp = env;
2495 for (;;) {
f9d8cd12 2496 while (*cp != '\0' && isspace(*cp))
5ed44076 2497 cp++;
f9d8cd12 2498 if (*cp == '\0')
5ed44076
MD
2499 break;
2500 len = 0;
f9d8cd12 2501 while (cp[len] != '\0' && !isspace(cp[len]))
5ed44076 2502 len++;
f9d8cd12 2503 if (strncmp(cp, subsys, len) == 0) {
728aa6ee 2504 kfreeenv(env);
5ed44076
MD
2505 return (1);
2506 }
2507 cp += len;
2508 }
728aa6ee 2509 kfreeenv(env);
5ed44076
MD
2510
2511 return (0);
2512}
2513
2514/*
2df6e324
MD
2515 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2516 * components are enabled by default. The ones that are not have to be
2517 * enabled via debug.acpi.enabled.
2518 */
2519int
2520acpi_enabled(char *subsys)
2521{
2522 char *cp, *env;
2523 int len;
2524
bc01a404 2525 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
2df6e324
MD
2526 return (0);
2527 if (strcmp(env, "all") == 0) {
728aa6ee 2528 kfreeenv(env);
2df6e324
MD
2529 return (1);
2530 }
2531
2532 /* Scan the enable list, checking for a match. */
2533 cp = env;
2534 for (;;) {
2535 while (*cp != '\0' && isspace(*cp))
2536 cp++;
2537 if (*cp == '\0')
2538 break;
2539 len = 0;
2540 while (cp[len] != '\0' && !isspace(cp[len]))
2541 len++;
2542 if (strncmp(cp, subsys, len) == 0) {
728aa6ee 2543 kfreeenv(env);
2df6e324
MD
2544 return (1);
2545 }
2546 cp += len;
2547 }
728aa6ee 2548 kfreeenv(env);
2df6e324
MD
2549
2550 return (0);
2551}
2552
2553/*
5ed44076
MD
2554 * Control interface.
2555 *
2556 * We multiplex ioctls for all participating ACPI devices here. Individual
2557 * drivers wanting to be accessible via /dev/acpi should use the
2558 * register/deregister interface to make their handlers visible.
2559 */
2560struct acpi_ioctl_hook
2561{
2562 TAILQ_ENTRY(acpi_ioctl_hook) link;
2563 u_long cmd;
2564 acpi_ioctl_fn fn;
2565 void *arg;
2566};
2567
2568static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
2569static int acpi_ioctl_hooks_initted;
2570
2571/*
2572 * Register an ioctl handler.
2573 */
2574int
2575acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
2576{
2577 struct acpi_ioctl_hook *hp;
2578
efda3bd0 2579 hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_INTWAIT);
5ed44076
MD
2580 hp->cmd = cmd;
2581 hp->fn = fn;
2582 hp->arg = arg;
2583 if (acpi_ioctl_hooks_initted == 0) {
2584 TAILQ_INIT(&acpi_ioctl_hooks);
2585 acpi_ioctl_hooks_initted = 1;
2586 }
2587 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
2588 return (0);
2589}
2590
2591/*
2592 * Deregister an ioctl handler.
2593 */
2594void
2595acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
2596{
2597 struct acpi_ioctl_hook *hp;
2598
2599 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
2600 if ((hp->cmd == cmd) && (hp->fn == fn))
2601 break;
2602
2603 if (hp != NULL) {
2604 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
efda3bd0 2605 kfree(hp, M_ACPIDEV);
5ed44076
MD
2606 }
2607}
2608
2609static int
fef8985e 2610acpiopen(struct dev_open_args *ap)
5ed44076
MD
2611{
2612 return (0);
2613}
2614
2615static int
fef8985e 2616acpiclose(struct dev_close_args *ap)
5ed44076
MD
2617{
2618 return (0);
2619}
2620
2621static int
fef8985e 2622acpiioctl(struct dev_ioctl_args *ap)
5ed44076
MD
2623{
2624 struct acpi_softc *sc;
2625 struct acpi_ioctl_hook *hp;
2626 int error, xerror, state;
2627 ACPI_LOCK_DECL;
2628
2629 ACPI_LOCK;
2630
2631 error = state = 0;
fef8985e 2632 sc = ap->a_head.a_dev->si_drv1;
5ed44076
MD
2633
2634 /*
2635 * Scan the list of registered ioctls, looking for handlers.
2636 */
2637 if (acpi_ioctl_hooks_initted) {
2638 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
fef8985e
MD
2639 if (hp->cmd == ap->a_cmd) {
2640 xerror = hp->fn(ap->a_cmd, ap->a_data, hp->arg);
5ed44076
MD
2641 if (xerror != 0)
2642 error = xerror;
2643 goto out;
2644 }
2645 }
2646 }
2647
2648 /*
2649 * Core ioctls are not permitted for non-writable user.
2650 * Currently, other ioctls just fetch information.
2651 * Not changing system behavior.
2652 */
2a1383fc
YT
2653 if((ap->a_fflag & FWRITE) == 0) {
2654 error = EPERM;
2655 goto out;
2656 }
5ed44076
MD
2657
2658 /* Core system ioctls. */
fef8985e 2659 switch (ap->a_cmd) {
5ed44076
MD
2660 case ACPIIO_ENABLE:
2661 if (ACPI_FAILURE(acpi_Enable(sc)))
2662 error = ENXIO;
2663 break;
2664 case ACPIIO_DISABLE:
2665 if (ACPI_FAILURE(acpi_Disable(sc)))
2666 error = ENXIO;
2667 break;
2668 case ACPIIO_SETSLPSTATE:
2669 if (!sc->acpi_enabled) {
2670 error = ENXIO;
2671 break;
2672 }
fef8985e 2673 state = *(int *)ap->a_data;
5ed44076
MD
2674 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX) {
2675 if (ACPI_FAILURE(acpi_SetSleepState(sc, state)))
2676 error = EINVAL;
2677 } else {
2678 error = EINVAL;
2679 }
2680 break;
2681 default:
2682 if (error == 0)
2683 error = EINVAL;
2684 break;
2685 }
2686
2687out:
2688 ACPI_UNLOCK;
2689 return (error);
2690}
2691
2692static int
2693acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2694{
2695 char sleep_state[4];
2696 char buf[16];
2697 int error;
2698 UINT8 state, TypeA, TypeB;
2699
2700 buf[0] = '\0';
f9d8cd12 2701 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++) {
5ed44076 2702 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
f8c7a42d 2703 ksprintf(sleep_state, "S%d ", state);
5ed44076
MD
2704 strcat(buf, sleep_state);
2705 }
2706 }
2707 error = sysctl_handle_string(oidp, buf, sizeof(buf), req);
2708 return (error);
2709}
2710
2711static int
2712acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
2713{
2714 char sleep_state[10];
2715 int error;
2716 u_int new_state, old_state;
2717
2718 old_state = *(u_int *)oidp->oid_arg1;
f9d8cd12 2719 if (old_state > ACPI_S_STATES_MAX + 1) {
5ed44076
MD
2720 strcpy(sleep_state, "unknown");
2721 } else {
2722 bzero(sleep_state, sizeof(sleep_state));
2723 strncpy(sleep_state, sleep_state_names[old_state],
2724 sizeof(sleep_state_names[old_state]));
2725 }
2726 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
2727 if (error == 0 && req->newptr != NULL) {
2728 new_state = ACPI_STATE_S0;
2729 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++) {
2730 if (strncmp(sleep_state, sleep_state_names[new_state],
2731 sizeof(sleep_state)) == 0)
2732 break;
2733 }
2734 if (new_state <= ACPI_S_STATES_MAX + 1) {
2735 if (new_state != old_state)
2736 *(u_int *)oidp->oid_arg1 = new_state;
2737 } else {
2738 error = EINVAL;
2739 }
2740 }
2741
2742 return (error);
2743}
2744
2745/* Inform devctl(4) when we receive a Notify. */
2746void
2747acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
2748{
2749 char notify_buf[16];
2750 ACPI_BUFFER handle_buf;
2751 ACPI_STATUS status;
2752
2753 if (subsystem == NULL)
2754 return;
2755
2756 handle_buf.Pointer = NULL;
2757 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
2758 status = AcpiNsHandleToPathname(h, &handle_buf);
2759 if (ACPI_FAILURE(status))
2760 return;
f8c7a42d 2761 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
5ed44076 2762 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
5ed44076
MD
2763 AcpiOsFree(handle_buf.Pointer);
2764}
2765
2766#ifdef ACPI_DEBUG
2767/*
2768 * Support for parsing debug options from the kernel environment.
2769 *
2770 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
2771 * by specifying the names of the bits in the debug.acpi.layer and
2772 * debug.acpi.level environment variables. Bits may be unset by
2773 * prefixing the bit name with !.
2774 */
2775struct debugtag
2776{
2777 char *name;
2778 UINT32 value;
2779};
2780
2781static struct debugtag dbg_layer[] = {
2782 {"ACPI_UTILITIES", ACPI_UTILITIES},
2783 {"ACPI_HARDWARE", ACPI_HARDWARE},
2784 {"ACPI_EVENTS", ACPI_EVENTS},
2785 {"ACPI_TABLES", ACPI_TABLES},
2786 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
2787 {"ACPI_PARSER", ACPI_PARSER},
2788 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
2789 {"ACPI_EXECUTER", ACPI_EXECUTER},
2790 {"ACPI_RESOURCES", ACPI_RESOURCES},
2791 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
2792 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
2793 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
2794 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
2795
5ed44076
MD
2796 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
2797 {"ACPI_BATTERY", ACPI_BATTERY},
f9d8cd12 2798 {"ACPI_BUS", ACPI_BUS},
5ed44076 2799 {"ACPI_BUTTON", ACPI_BUTTON},
f9d8cd12
MD
2800 {"ACPI_EC", ACPI_EC},
2801 {"ACPI_FAN", ACPI_FAN},
2802 {"ACPI_POWERRES", ACPI_POWERRES},
5ed44076
MD
2803 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
2804 {"ACPI_THERMAL", ACPI_THERMAL},
f9d8cd12 2805 {"ACPI_TIMER", ACPI_TIMER},
5ed44076
MD
2806 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
2807 {NULL, 0}
2808};
2809
2810static struct debugtag dbg_level[] = {
2811 {"ACPI_LV_ERROR", ACPI_LV_ERROR},
2812 {"ACPI_LV_WARN", ACPI_LV_WARN},
2813 {"ACPI_LV_INIT", ACPI_LV_INIT},
2814 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
2815 {"ACPI_LV_INFO", ACPI_LV_INFO},
2816 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
2817
2818 /* Trace verbosity level 1 [Standard Trace Level] */
2819 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
2820 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
2821 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
2822 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
2823 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
2824 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
2825 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
2826 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
2827 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
2828 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
2829 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
2830 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
2831 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
2832 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
2833 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
2834
2835 /* Trace verbosity level 2 [Function tracing and memory allocation] */
2836 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
2837 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
2838 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
2839 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
2840 {"ACPI_LV_ALL", ACPI_LV_ALL},
2841
2842 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
2843 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
2844 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
2845 {"ACPI_LV_IO", ACPI_LV_IO},
2846 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
2847 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
2848
2849 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
2850 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
2851 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
2852 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
2853 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
2854 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
2855 {NULL, 0}
2856};
2857
2858static void
2859acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
2860{
2861 char *ep;
2862 int i, l;
2863 int set;
2864
2865 while (*cp) {
2866 if (isspace(*cp)) {
2867 cp++;
2868 continue;
2869 }
2870 ep = cp;
2871 while (*ep && !isspace(*ep))
2872 ep++;
2873 if (*cp == '!') {
2874 set = 0;
2875 cp++;
2876 if (cp == ep)
2877 continue;
2878 } else {
2879 set = 1;
2880 }
2881 l = ep - cp;
2882 for (i = 0; tag[i].name != NULL; i++) {
2883 if (!strncmp(cp, tag[i].name, l)) {
2884 if (set)
2885 *flag |= tag[i].value;
2886 else
2887 *flag &= ~tag[i].value;
5ed44076
MD
2888 }
2889 }
2890 cp = ep;
2891 }
2892}
2893
ba39e2e0
MD
2894/*
2895 * Warning: also called in early boot, before any allocators
2896 * are working.
2897 */
5ed44076
MD
2898static void
2899acpi_set_debugging(void *junk)
2900{
ba39e2e0 2901 char *layer, *level;
5ed44076
MD
2902
2903 if (cold) {
2904 AcpiDbgLayer = 0;
2905 AcpiDbgLevel = 0;
2906 }
2907
bc01a404
MD
2908 layer = kgetenv("debug.acpi.layer");
2909 level = kgetenv("debug.acpi.level");
f9d8cd12
MD
2910 if (layer == NULL && level == NULL)
2911 return;
5ed44076 2912
e3869ec7 2913 kprintf("ACPI set debug");
f9d8cd12
MD
2914 if (layer != NULL) {
2915 if (strcmp("NONE", layer) != 0)
e3869ec7 2916 kprintf(" layer '%s'", layer);
f9d8cd12 2917 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
728aa6ee 2918 kfreeenv(layer);
f9d8cd12
MD
2919 }
2920 if (level != NULL) {
2921 if (strcmp("NONE", level) != 0)
e3869ec7 2922 kprintf(" level '%s'", level);
f9d8cd12 2923 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
728aa6ee 2924 kfreeenv(level);
5ed44076 2925 }
e3869ec7 2926 kprintf("\n");
5ed44076 2927}
ba39e2e0
MD
2928SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY,
2929 acpi_set_debugging, NULL);
5ed44076
MD
2930
2931static int
2932acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
2933{
2934 int error, *dbg;
2935 struct debugtag *tag;
2936 struct sbuf sb;
2937
2938 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
2939 return (ENOMEM);
2940 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
2941 tag = &dbg_layer[0];
2942 dbg = &AcpiDbgLayer;
2943 } else {
2944 tag = &dbg_level[0];
2945 dbg = &AcpiDbgLevel;
2946 }
2947
2948 /* Get old values if this is a get request. */
2949 if (*dbg == 0) {
2950 sbuf_cpy(&sb, "NONE");
2951 } else if (req->newptr == NULL) {
2952 for (; tag->name != NULL; tag++) {
2953 if ((*dbg & tag->value) == tag->value)
2954 sbuf_printf(&sb, "%s ", tag->name);
2955 }
2956 }
2957 sbuf_trim(&sb);
2958 sbuf_finish(&sb);
2959
f9d8cd12
MD
2960 /* Copy out the old values to the user. */
2961 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
5ed44076
MD
2962 sbuf_delete(&sb);
2963
2964 /* If the user is setting a string, parse it. */
2965 if (error == 0 && req->newptr != NULL) {
2966 *dbg = 0;
2895031d 2967 ksetenv(oidp->oid_arg1, req->newptr);
5ed44076
MD
2968 acpi_set_debugging(NULL);
2969 }
2970
2971 return (error);
2972}
2973SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
2974 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
2975SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
2976 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
2977#endif
2978
2979static int
2980acpi_pm_func(u_long cmd, void *arg, ...)
2981{
2982 int state, acpi_state;
2983 int error;
2984 struct acpi_softc *sc;
2985 va_list ap;
2986
2987 error = 0;
2988 switch (cmd) {
2989 case POWER_CMD_SUSPEND:
2990 sc = (struct acpi_softc *)arg;
2991 if (sc == NULL) {
2992 error = EINVAL;
2993 goto out;
2994 }
2995
2996 va_start(ap, arg);
2997 state = va_arg(ap, int);
2998 va_end(ap);
2999
3000 switch (state) {
3001 case POWER_SLEEP_STATE_STANDBY:
3002 acpi_state = sc->acpi_standby_sx;
3003 break;
3004 case POWER_SLEEP_STATE_SUSPEND:
3005 acpi_state = sc->acpi_suspend_sx;
3006 break;
3007 case POWER_SLEEP_STATE_HIBERNATE:
3008 acpi_state = ACPI_STATE_S4;
3009 break;
3010 default:
3011 error = EINVAL;
3012 goto out;
3013 }
3014
3015 acpi_SetSleepState(sc, acpi_state);
3016 break;
3017 default:
3018 error = EINVAL;
3019 goto out;
3020 }
3021
3022out:
3023 return (error);
3024}
3025
3026static void
3027acpi_pm_register(void *arg)
3028{
3029 if (!cold || resource_disabled("acpi", 0))
3030 return;
3031
3032 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3033}
3034
ba39e2e0 3035SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);