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Fix LINT building, broken by ACPI update.
[dragonfly.git] / sys / dev / acpica5 / acpi.c
CommitLineData
5ed44076 1/*-
10f97674
AP		 2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.kfreebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.kfreebsd.org>
5ed44076
MD		 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.
10f97674 28 * __FBSDID("$FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $");
5ed44076
MD		 29 */
30
10f97674
AP		 31#include <sys/cdefs.h>
32
5ed44076
MD		 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>
10f97674 39#include <sys/module.h>
5ed44076
MD		 40#include <sys/bus.h>
41#include <sys/conf.h>
10f97674 42#include <sys/ioccom.h>
5ed44076
MD		 43#include <sys/reboot.h>
44#include <sys/sysctl.h>
45#include <sys/ctype.h>
46#include <sys/linker.h>
47#include <sys/power.h>
48#include <sys/sbuf.h>
10f97674
AP		 49#include <sys/device.h>
50#include <sys/spinlock.h>
51#include <sys/spinlock2.h>
5ed44076 52
10f97674 53#include <sys/rman.h>
5ed44076 54#include <bus/isa/isavar.h>
10f97674 55#include <bus/isa/pnpvar.h>
5ed44076
MD		 56
57#include "acpi.h"
58#include <dev/acpica5/acpivar.h>
59#include <dev/acpica5/acpiio.h>
10f97674
AP		 60#include "achware.h"
61#include "acnamesp.h"
62#include "acglobal.h"
63
64#include "pci_if.h"
4ea06a72 65#include <bus/pci/pci_cfgreg.h>
10f97674
AP		 66#include <bus/pci/pcivar.h>
67#include <bus/pci/pci_private.h>
68
69#include <vm/vm_param.h>
5ed44076
MD		 70
71MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
72
10f97674
AP		 73#define GIANT_REQUIRED
74#define mtx_lock(a)
75#define mtx_unlock(a)
5ed44076
MD		 76/* Hooks for the ACPI CA debugging infrastructure */
77#define _COMPONENT ACPI_BUS
78ACPI_MODULE_NAME("ACPI")
79
80static d_open_t acpiopen;
81static d_close_t acpiclose;
82static d_ioctl_t acpiioctl;
83
84#define CDEV_MAJOR 152
fef8985e 85static struct dev_ops acpi_ops = {
10f97674
AP		 86 { "acpi", CDEV_MAJOR, 0 },
87 .d_open = acpiopen,
88 .d_close = acpiclose,
89 .d_ioctl = acpiioctl
f9d8cd12
MD		 90};
91
10f97674
AP		 92/* Global mutex for locking access to the ACPI subsystem. */
93struct lock acpi_lock;
94/* Bitmap of device quirks. */
95int acpi_quirks;
f9d8cd12 96
5ed44076 97static int acpi_modevent(struct module *mod, int event, void *junk);
10f97674 98static void acpi_identify(driver_t *driver, device_t parent);
5ed44076
MD		 99static int acpi_probe(device_t dev);
100static int acpi_attach(device_t dev);
10f97674
AP		 101static int acpi_suspend(device_t dev);
102static int acpi_resume(device_t dev);
49e48b8a 103static int acpi_shutdown(device_t dev);
10f97674
AP		 104static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name,
105 int unit);
5ed44076 106static int acpi_print_child(device_t bus, device_t child);
10f97674
AP		 107static void acpi_probe_nomatch(device_t bus, device_t child);
108static void acpi_driver_added(device_t dev, driver_t *driver);
5ed44076
MD		 109static int acpi_read_ivar(device_t dev, device_t child, int index,
110 uintptr_t *result);
111static int acpi_write_ivar(device_t dev, device_t child, int index,
112 uintptr_t value);
c8b4f0e6 113static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
10f97674 114static int acpi_sysres_alloc(device_t dev);
5ed44076
MD		 115static struct resource *acpi_alloc_resource(device_t bus, device_t child,
116 int type, int *rid, u_long start, u_long end,
117 u_long count, u_int flags);
118static int acpi_release_resource(device_t bus, device_t child, int type,
119 int rid, struct resource *r);
10f97674
AP		 120static void acpi_delete_resource(device_t bus, device_t child, int type,
121 int rid);
5ed44076
MD		 122static uint32_t acpi_isa_get_logicalid(device_t dev);
123static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
676159d4 124static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
10f97674
AP		 125static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
126 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
127 ACPI_BUFFER *ret);
128static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
129 int *dstate);
130static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
131 void *context, void **retval);
132static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
133 int max_depth, acpi_scan_cb_t user_fn, void *arg);
134static int acpi_set_powerstate_method(device_t bus, device_t child,
135 int state);
5ed44076 136static int acpi_isa_pnp_probe(device_t bus, device_t child,
10f97674 137 struct isa_pnp_id *ids);
5ed44076 138static void acpi_probe_children(device_t bus);
10f97674 139static void acpi_probe_order(ACPI_HANDLE handle, int *order);
5ed44076 140static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
10f97674 141 void *context, void **status);
10f97674 142static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
5ed44076
MD		 143static void acpi_shutdown_final(void *arg, int howto);
144static void acpi_enable_fixed_events(struct acpi_softc *sc);
10f97674
AP		 145static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
146static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
147static int acpi_wake_prep_walk(int sstate);
49e48b8a 148static int acpi_wake_sysctl_walk(device_t dev);
b955fe7e 149#ifdef notyet
49e48b8a 150static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
b955fe7e 151#endif
5ed44076
MD		 152static void acpi_system_eventhandler_sleep(void *arg, int state);
153static void acpi_system_eventhandler_wakeup(void *arg, int state);
154static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
155static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
156static int acpi_pm_func(u_long cmd, void *arg, ...);
f9d8cd12
MD		 157static int acpi_child_location_str_method(device_t acdev, device_t child,
158 char *buf, size_t buflen);
159static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
160 char *buf, size_t buflen);
4ea06a72 161static void acpi_enable_pcie(void);
5ed44076
MD		 162
163static device_method_t acpi_methods[] = {
164 /* Device interface */
165 DEVMETHOD(device_identify, acpi_identify),
166 DEVMETHOD(device_probe, acpi_probe),
167 DEVMETHOD(device_attach, acpi_attach),
49e48b8a 168 DEVMETHOD(device_shutdown, acpi_shutdown),
5ed44076 169 DEVMETHOD(device_detach, bus_generic_detach),
10f97674
AP		 170 DEVMETHOD(device_suspend, acpi_suspend),
171 DEVMETHOD(device_resume, acpi_resume),
5ed44076
MD		 172
173 /* Bus interface */
174 DEVMETHOD(bus_add_child, acpi_add_child),
175 DEVMETHOD(bus_print_child, acpi_print_child),
10f97674
AP		 176 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
177 DEVMETHOD(bus_driver_added, acpi_driver_added),
5ed44076
MD		 178 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
179 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
c8b4f0e6
YT		 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),
5ed44076
MD		 183 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
184 DEVMETHOD(bus_release_resource, acpi_release_resource),
10f97674 185 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
f9d8cd12
MD		 186 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
187 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
5ed44076
MD		 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
676159d4
HT		 193 /* ACPI bus */
194 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
10f97674
AP		 195 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
196 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
197 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
198
199 /* PCI emulation */
200 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
676159d4 201
5ed44076
MD		 202 /* ISA emulation */
203 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
204
205 {0, 0}
206};
207
208static driver_t acpi_driver = {
209 "acpi",
210 acpi_methods,
211 sizeof(struct acpi_softc),
212};
213
214static devclass_t acpi_devclass;
215DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
f9d8cd12
MD		 216MODULE_VERSION(acpi, 1);
217
10f97674
AP		 218ACPI_SERIAL_DECL(acpi, "ACPI serializer")
219
220/* Local pools for managing system resources for ACPI child devices. */
221static struct rman acpi_rman_io, acpi_rman_mem;
222
223#define ACPI_MINIMUM_AWAKETIME 5
224
f9d8cd12
MD		 225static const char* sleep_state_names[] = {
226 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
5ed44076 227
10f97674 228SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
5ed44076
MD		 229static char acpi_ca_version[12];
230SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
231 acpi_ca_version, 0, "Version of Intel ACPI-CA");
232
233/*
f9d8cd12
MD		 234 * Allow override of whether methods execute in parallel or not.
235 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
236 * errors for AML that really can't handle parallel method execution.
237 * It is off by default since this breaks recursive methods and
238 * some IBMs use such code.
239 */
240static int acpi_serialize_methods;
241TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
242
10f97674
AP		 243/* Power devices off and on in suspend and resume. XXX Remove once tested. */
244static int acpi_do_powerstate = 1;
245TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
246SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
247 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
248
249/* Allow users to override quirks. */
250TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
251
252static int acpi_susp_bounce;
253SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
254 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
255
f9d8cd12 256/*
5ed44076
MD		 257 * ACPI can only be loaded as a module by the loader; activating it after
258 * system bootstrap time is not useful, and can be fatal to the system.
259 * It also cannot be unloaded, since the entire system bus heirarchy hangs
260 * off it.
261 */
262static int
263acpi_modevent(struct module *mod, int event, void *junk)
264{
10f97674 265 switch (event) {
5ed44076
MD		 266 case MOD_LOAD:
267 if (!cold) {
e3869ec7 268 kprintf("The ACPI driver cannot be loaded after boot.\n");
5ed44076
MD		 269 return (EPERM);
270 }
271 break;
272 case MOD_UNLOAD:
273 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
274 return (EBUSY);
275 break;
276 default:
277 break;
278 }
279 return (0);
280}
281
282/*
283 * Perform early initialization.
284 */
285ACPI_STATUS
286acpi_Startup(void)
287{
10f97674
AP		 288 static int started = 0;
289 ACPI_STATUS status;
290 int val;
5ed44076
MD		 291
292 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
293
10f97674 294 /* Only run the startup code once. The MADT driver also calls this. */
5ed44076 295 if (started)
10f97674 296 return_VALUE (AE_OK);
5ed44076
MD		 297 started = 1;
298
10f97674
AP		 299 /*
300 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
301 * if more tables exist.
302 */
303 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
304 kprintf("ACPI: Table initialisation failed: %s\n",
305 AcpiFormatException(status));
306 return_VALUE (status);
5ed44076 307 }
10f97674
AP		 308
309 /* Set up any quirks we have for this system. */
310#ifdef notyet
311 if (acpi_quirks == ACPI_Q_OK)
312 acpi_table_quirks(&acpi_quirks);
5ed44076 313#endif
f9d8cd12 314
10f97674
AP		 315 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
316 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
317 acpi_quirks &= ~ACPI_Q_BROKEN;
318 if (acpi_quirks & ACPI_Q_BROKEN) {
319 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
320 status = AE_SUPPORT;
321 }
f9d8cd12 322
10f97674 323 return_VALUE (status);
5ed44076
MD		 324}
325
326/*
327 * Detect ACPI, perform early initialisation
328 */
10f97674 329static void
5ed44076
MD		 330acpi_identify(driver_t *driver, device_t parent)
331{
332 device_t child;
333
334 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
335
336 if (!cold)
10f97674 337 return_VOID;
5ed44076
MD		 338
339 /* Check that we haven't been disabled with a hint. */
340 if (resource_disabled("acpi", 0))
10f97674 341 return_VOID;
5ed44076 342
5ed44076
MD		 343 /* Make sure we're not being doubly invoked. */
344 if (device_find_child(parent, "acpi", 0) != NULL)
10f97674 345 return_VOID;
5ed44076 346
10f97674 347 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
5ed44076 348
10f97674
AP		 349 /* Initialize root tables. */
350 if (ACPI_FAILURE(acpi_Startup())) {
351 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
352 return_VOID;
353 }
f9d8cd12 354
5ed44076 355 /* Attach the actual ACPI device. */
10f97674
AP		 356 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) {
357 device_printf(parent, "device_identify failed\n");
358 return_VOID;
5ed44076 359 }
e1eeedd0
YT		 360}
361
362/*
10f97674 363 * Fetch some descriptive data from ACPI to put in our attach message.
5ed44076
MD		 364 */
365static int
366acpi_probe(device_t dev)
367{
10f97674
AP		 368 ACPI_TABLE_RSDP *rsdp;
369 ACPI_TABLE_HEADER *rsdt;
370 ACPI_PHYSICAL_ADDRESS paddr;
371 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
5ed44076 372 struct sbuf sb;
5ed44076
MD		 373
374 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
375
376 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
377 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
10f97674
AP		 378 device_printf(dev, "probe failed, other PM system enabled.\n");
379 return_VALUE (ENXIO);
5ed44076
MD		 380 }
381
10f97674
AP		 382 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
383 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
384 return_VALUE (ENXIO);
385 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
386 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
387 else
388 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
389 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
e1eeedd0 390
10f97674
AP		 391 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
392 return_VALUE (ENXIO);
e1eeedd0 393 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
10f97674 394 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
e1eeedd0
YT		 395 sbuf_trim(&sb);
396 sbuf_putc(&sb, ' ');
10f97674 397 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
e1eeedd0
YT		 398 sbuf_trim(&sb);
399 sbuf_finish(&sb);
400 device_set_desc_copy(dev, sbuf_data(&sb));
401 sbuf_delete(&sb);
10f97674
AP		 402 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
403
404 return_VALUE (0);
5ed44076
MD		 405}
406
407static int
408acpi_attach(device_t dev)
409{
410 struct acpi_softc *sc;
10f97674 411 ACPI_TABLE_FACS *facs;
5ed44076 412 ACPI_STATUS status;
f9d8cd12 413 int error, state;
5ed44076 414 UINT32 flags;
f9d8cd12 415 UINT8 TypeA, TypeB;
5ed44076 416 char *env;
5ed44076
MD		 417
418 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
e1eeedd0 419
5ed44076 420 sc = device_get_softc(dev);
5ed44076 421 sc->acpi_dev = dev;
10f97674 422 callout_init(&sc->susp_force_to);
5ed44076 423
c877f0f6 424 if ((error = acpi_task_thread_init())) {
10f97674
AP		 425 device_printf(dev, "Could not start task thread.\n");
426 goto out;
c877f0f6
YT		 427 }
428
e1eeedd0 429 error = ENXIO;
e1eeedd0 430
c8b4f0e6
YT		 431 /* Initialize resource manager. */
432 acpi_rman_io.rm_type = RMAN_ARRAY;
433 acpi_rman_io.rm_start = 0;
434 acpi_rman_io.rm_end = 0xffff;
10f97674 435 acpi_rman_io.rm_descr = "ACPI I/O ports";
c8b4f0e6
YT		 436 if (rman_init(&acpi_rman_io) != 0)
437 panic("acpi rman_init IO ports failed");
438 acpi_rman_mem.rm_type = RMAN_ARRAY;
439 acpi_rman_mem.rm_start = 0;
440 acpi_rman_mem.rm_end = ~0ul;
10f97674 441 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
c8b4f0e6
YT		 442 if (rman_init(&acpi_rman_mem) != 0)
443 panic("acpi rman_init memory failed");
444
10f97674 445 /* Initialise the ACPI mutex */
5c7ffd75
AP		 446 ACPI_LOCK_INIT(acpi, "acpi");
447 ACPI_SERIAL_INIT(acpi);
10f97674
AP		 448
449 /*
450 * Set the globals from our tunables. This is needed because ACPI-CA
451 * uses UINT8 for some values and we have no tunable_byte.
452 */
453 AcpiGbl_AllMethodsSerialized = acpi_serialize_methods;
454 AcpiGbl_EnableInterpreterSlack = TRUE;
455
456 /* Start up the ACPI CA subsystem. */
457 status = AcpiInitializeSubsystem();
458 if (ACPI_FAILURE(status)) {
459 device_printf(dev, "Could not initialize Subsystem: %s\n",
460 AcpiFormatException(status));
461 goto out;
462 }
463
464 /* Load ACPI name space. */
465 status = AcpiLoadTables();
466 if (ACPI_FAILURE(status)) {
467 device_printf(dev, "Could not load Namespace: %s\n",
468 AcpiFormatException(status));
469 goto out;
470 }
471
4ea06a72
AP		 472 /* Handle MCFG table if present. */
473 acpi_enable_pcie();
474
5ed44076 475 /* Install the default address space handlers. */
5ed44076
MD		 476 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
477 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
478 if (ACPI_FAILURE(status)) {
479 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
480 AcpiFormatException(status));
481 goto out;
482 }
483 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
484 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
485 if (ACPI_FAILURE(status)) {
486 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
487 AcpiFormatException(status));
488 goto out;
489 }
490 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
491 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
492 if (ACPI_FAILURE(status)) {
493 device_printf(dev, "could not initialise PciConfig handler: %s\n",
494 AcpiFormatException(status));
495 goto out;
496 }
497
498 /*
5ed44076
MD		 499 * Note that some systems (specifically, those with namespace evaluation
500 * issues that require the avoidance of parts of the namespace) must
501 * avoid running _INI and _STA on everything, as well as dodging the final
502 * object init pass.
503 *
504 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
505 *
506 * XXX We should arrange for the object init pass after we have attached
507 * all our child devices, but on many systems it works here.
508 */
5ed44076 509 flags = 0;
728aa6ee 510 if (ktestenv("debug.acpi.avoid"))
5ed44076 511 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
10f97674
AP		 512
513 /* Bring the hardware and basic handlers online. */
5ed44076
MD		 514 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
515 device_printf(dev, "Could not enable ACPI: %s\n",
516 AcpiFormatException(status));
517 goto out;
518 }
519
520 /*
521 * Call the ECDT probe function to provide EC functionality before
522 * the namespace has been evaluated.
10f97674
AP		 523 *
524 * XXX This happens before the sysresource devices have been probed and
525 * attached so its resources come from nexus0. In practice, this isn't
526 * a problem but should be addressed eventually.
5ed44076
MD		 527 */
528 acpi_ec_ecdt_probe(dev);
529
10f97674 530 /* Bring device objects and regions online. */
5ed44076
MD		 531 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
532 device_printf(dev, "Could not initialize ACPI objects: %s\n",
533 AcpiFormatException(status));
534 goto out;
535 }
536
537 /*
538 * Setup our sysctl tree.
539 *
540 * XXX: This doesn't check to make sure that none of these fail.
541 */
542 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
543 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
544 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
545 device_get_name(dev), CTLFLAG_RD, 0, "");
546 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
547 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
548 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
549 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
550 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
551 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
552 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
553 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
554 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
555 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
556 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
557 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
558 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
559 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
560 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
561 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
562 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
563 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
564 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674
AP		 565 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
566 "sleep delay");
5ed44076 567 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674 568 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
5ed44076 569 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674 570 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
5ed44076 571 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674
AP		 572 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
573 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
574 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
575 OID_AUTO, "handle_reboot", CTLFLAG_RW,
576 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
5ed44076
MD		 577
578 /*
49e48b8a 579 * Default to 1 second before sleeping to give some machines time to
5ed44076
MD		 580 * stabilize.
581 */
49e48b8a 582 sc->acpi_sleep_delay = 1;
5ed44076
MD		 583 if (bootverbose)
584 sc->acpi_verbose = 1;
10f97674
AP		 585 if ((env = kgetenv("hw.acpi.verbose")) != NULL) {
586 if (strcmp(env, "0") != 0)
587 sc->acpi_verbose = 1;
728aa6ee 588 kfreeenv(env);
5ed44076
MD		 589 }
590
591 /* Only enable S4BIOS by default if the FACS says it is available. */
10f97674
AP		 592 status = AcpiGetTable(ACPI_SIG_FACS, 0, (ACPI_TABLE_HEADER **)&facs);
593 if (ACPI_FAILURE(status)) {
594 device_printf(dev, "couldn't get FACS: %s\n",
595 AcpiFormatException(status));
596 error = ENXIO;
597 goto out;
e1eeedd0 598 }
10f97674
AP		 599 if (facs->Flags & ACPI_FACS_S4_BIOS_PRESENT)
600 sc->acpi_s4bios = 1;
5ed44076
MD		 601
602 /*
f9d8cd12
MD		 603 * Dispatch the default sleep state to devices. The lid switch is set
604 * to NONE by default to avoid surprising users.
5ed44076 605 */
f9d8cd12
MD		 606 sc->acpi_power_button_sx = ACPI_STATE_S5;
607 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
5ed44076
MD		 608 sc->acpi_standby_sx = ACPI_STATE_S1;
609 sc->acpi_suspend_sx = ACPI_STATE_S3;
610
f9d8cd12
MD		 611 /* Pick the first valid sleep state for the sleep button default. */
612 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
10f97674 613 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
f9d8cd12
MD		 614 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
615 sc->acpi_sleep_button_sx = state;
616 break;
617 }
618
5ed44076
MD		 619 acpi_enable_fixed_events(sc);
620
621 /*
622 * Scan the namespace and attach/initialise children.
623 */
5ed44076 624
10f97674 625 /* Register our shutdown handler. */
5ed44076
MD		 626 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
627 SHUTDOWN_PRI_LAST);
628
629 /*
630 * Register our acpi event handlers.
631 * XXX should be configurable eg. via userland policy manager.
632 */
633 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
634 sc, ACPI_EVENT_PRI_LAST);
635 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
636 sc, ACPI_EVENT_PRI_LAST);
637
638 /* Flag our initial states. */
639 sc->acpi_enabled = 1;
640 sc->acpi_sstate = ACPI_STATE_S0;
641 sc->acpi_sleep_disabled = 0;
5ed44076 642 /* Create the control device */
fef8985e 643 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
5ed44076
MD		 644 "acpi");
645 sc->acpi_dev_t->si_drv1 = sc;
646
5ed44076
MD		 647 if ((error = acpi_machdep_init(dev)))
648 goto out;
649
650 /* Register ACPI again to pass the correct argument of pm_func. */
651 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
652
653 if (!acpi_disabled("bus"))
654 acpi_probe_children(dev);
655
656 error = 0;
657
658 out:
ef612539 659 cputimer_intr_pmfixup();
5ed44076
MD		 660 return_VALUE (error);
661}
662
49e48b8a 663static int
10f97674 664acpi_suspend(device_t dev)
49e48b8a 665{
10f97674
AP		 666 device_t child, *devlist;
667 int error, i, numdevs, pstate;
49e48b8a 668
10f97674
AP		 669 GIANT_REQUIRED;
670
671 /* First give child devices a chance to suspend. */
672 error = bus_generic_suspend(dev);
673 if (error)
674 return (error);
675
676 /*
677 * Now, set them into the appropriate power state, usually D3. If the
678 * device has an _SxD method for the next sleep state, use that power
679 * state instead.
680 */
681 device_get_children(dev, &devlist, &numdevs);
682 for (i = 0; i < numdevs; i++) {
683 /* If the device is not attached, we've powered it down elsewhere. */
684 child = devlist[i];
685 if (!device_is_attached(child))
686 continue;
687
688 /*
689 * Default to D3 for all sleep states. The _SxD method is optional
690 * so set the powerstate even if it's absent.
691 */
692 pstate = PCI_POWERSTATE_D3;
693 error = acpi_device_pwr_for_sleep(device_get_parent(child),
694 child, &pstate);
695 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
696 pci_set_powerstate(child, pstate);
697 }
698 kfree(devlist, M_TEMP);
699 error = 0;
700
701 return (error);
49e48b8a
MD		 702}
703
10f97674
AP		 704static int
705acpi_resume(device_t dev)
f9d8cd12 706{
10f97674
AP		 707 ACPI_HANDLE handle;
708 int i, numdevs;
709 device_t child, *devlist;
710
711 GIANT_REQUIRED;
f9d8cd12
MD		 712
713 /*
10f97674
AP		 714 * Put all devices in D0 before resuming them. Call _S0D on each one
715 * since some systems expect this.
f9d8cd12 716 */
10f97674
AP		 717 device_get_children(dev, &devlist, &numdevs);
718 for (i = 0; i < numdevs; i++) {
719 child = devlist[i];
720 handle = acpi_get_handle(child);
721 if (handle)
722 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
723 if (device_is_attached(child) && acpi_do_powerstate)
724 pci_set_powerstate(child, PCI_POWERSTATE_D0);
f9d8cd12 725 }
10f97674
AP		 726 kfree(devlist, M_TEMP);
727
728 return (bus_generic_resume(dev));
729}
730
731static int
732acpi_shutdown(device_t dev)
733{
734
735 GIANT_REQUIRED;
736
737 /* Allow children to shutdown first. */
738 bus_generic_shutdown(dev);
f9d8cd12
MD		 739
740 /*
10f97674
AP		 741 * Enable any GPEs that are able to power-on the system (i.e., RTC).
742 * Also, disable any that are not valid for this state (most).
f9d8cd12 743 */
10f97674 744 acpi_wake_prep_walk(ACPI_STATE_S5);
f9d8cd12 745
10f97674 746 return (0);
f9d8cd12
MD		 747}
748
5ed44076
MD		 749/*
750 * Handle a new device being added
751 */
752static device_t
10f97674 753acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
5ed44076
MD		 754{
755 struct acpi_device *ad;
756 device_t child;
757
10f97674
AP		 758 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
759 return (NULL);
5ed44076
MD		 760
761 resource_list_init(&ad->ad_rl);
2581072f 762 child = device_add_child_ordered(parent, order, name, unit);
5ed44076
MD		 763 if (child != NULL)
764 device_set_ivars(child, ad);
10f97674
AP		 765 else
766 kfree(ad, M_ACPIDEV);
5ed44076
MD		 767 return (child);
768}
769
770static int
771acpi_print_child(device_t bus, device_t child)
772{
773 struct acpi_device *adev = device_get_ivars(child);
774 struct resource_list *rl = &adev->ad_rl;
775 int retval = 0;
776
777 retval += bus_print_child_header(bus, child);
778 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
779 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
780 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
781 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
10f97674
AP		 782 if (device_get_flags(child))
783 retval += kprintf(" flags %#x", device_get_flags(child));
5ed44076
MD		 784 retval += bus_print_child_footer(bus, child);
785
786 return (retval);
787}
788
10f97674
AP		 789/*
790 * If this device is an ACPI child but no one claimed it, attempt
791 * to power it off. We'll power it back up when a driver is added.
792 *
793 * XXX Disabled for now since many necessary devices (like fdc and
794 * ATA) don't claim the devices we created for them but still expect
795 * them to be powered up.
796 */
797static void
798acpi_probe_nomatch(device_t bus, device_t child)
799{
800
801 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
802}
803
804/*
805 * If a new driver has a chance to probe a child, first power it up.
806 *
807 * XXX Disabled for now (see acpi_probe_nomatch for details).
808 */
809static void
810acpi_driver_added(device_t dev, driver_t *driver)
811{
812 device_t child, *devlist;
813 int i, numdevs;
814
815 DEVICE_IDENTIFY(driver, dev);
816 device_get_children(dev, &devlist, &numdevs);
817 for (i = 0; i < numdevs; i++) {
818 child = devlist[i];
819 if (device_get_state(child) == DS_NOTPRESENT) {
820 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
821 if (device_probe_and_attach(child) != 0)
822 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
823 }
824 }
825 kfree(devlist, M_TEMP);
826}
827
f9d8cd12
MD		 828/* Location hint for devctl(8) */
829static int
830acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
831 size_t buflen)
832{
833 struct acpi_device *dinfo = device_get_ivars(child);
834
835 if (dinfo->ad_handle)
10f97674 836 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
f9d8cd12 837 else
10f97674 838 ksnprintf(buf, buflen, "unknown");
f9d8cd12
MD		 839 return (0);
840}
841
842/* PnP information for devctl(8) */
843static int
844acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
845 size_t buflen)
846{
847 ACPI_BUFFER adbuf = {ACPI_ALLOCATE_BUFFER, NULL};
848 ACPI_DEVICE_INFO *adinfo;
849 struct acpi_device *dinfo = device_get_ivars(child);
850 char *end;
851 int error;
852
853 error = AcpiGetObjectInfo(dinfo->ad_handle, &adbuf);
854 adinfo = (ACPI_DEVICE_INFO *) adbuf.Pointer;
f9d8cd12 855 if (error)
10f97674 856 ksnprintf(buf, buflen, "unknown");
f9d8cd12 857 else
f8c7a42d 858 ksnprintf(buf, buflen, "_HID=%s _UID=%lu",
10f97674
AP		 859 (adinfo->Valid & ACPI_VALID_HID) ?
860 adinfo->HardwareId.Value : "none",
861 (adinfo->Valid & ACPI_VALID_UID) ?
862 strtoul(adinfo->UniqueId.Value, &end, 10) : 0);
f9d8cd12
MD		 863 if (adinfo)
864 AcpiOsFree(adinfo);
865
866 return (0);
867}
5ed44076
MD		 868
869/*
870 * Handle per-device ivars
871 */
872static int
873acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
874{
875 struct acpi_device *ad;
876
877 if ((ad = device_get_ivars(child)) == NULL) {
e3869ec7 878 kprintf("device has no ivars\n");
5ed44076
MD		 879 return (ENOENT);
880 }
881
882 /* ACPI and ISA compatibility ivars */
883 switch(index) {
884 case ACPI_IVAR_HANDLE:
885 *(ACPI_HANDLE *)result = ad->ad_handle;
886 break;
887 case ACPI_IVAR_MAGIC:
10f97674 888 *(uintptr_t *)result = ad->ad_magic;
5ed44076
MD		 889 break;
890 case ACPI_IVAR_PRIVATE:
891 *(void **)result = ad->ad_private;
892 break;
10f97674
AP		 893 case ACPI_IVAR_FLAGS:
894 *(int *)result = ad->ad_flags;
895 break;
5ed44076
MD		 896 case ISA_IVAR_VENDORID:
897 case ISA_IVAR_SERIAL:
898 case ISA_IVAR_COMPATID:
899 *(int *)result = -1;
900 break;
901 case ISA_IVAR_LOGICALID:
902 *(int *)result = acpi_isa_get_logicalid(child);
903 break;
904 default:
905 return (ENOENT);
906 }
907
908 return (0);
909}
910
911static int
912acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
913{
914 struct acpi_device *ad;
915
916 if ((ad = device_get_ivars(child)) == NULL) {
e3869ec7 917 kprintf("device has no ivars\n");
5ed44076
MD		 918 return (ENOENT);
919 }
920
921 switch(index) {
922 case ACPI_IVAR_HANDLE:
923 ad->ad_handle = (ACPI_HANDLE)value;
924 break;
925 case ACPI_IVAR_MAGIC:
10f97674 926 ad->ad_magic = (uintptr_t)value;
5ed44076
MD		 927 break;
928 case ACPI_IVAR_PRIVATE:
929 ad->ad_private = (void *)value;
930 break;
10f97674
AP		 931 case ACPI_IVAR_FLAGS:
932 ad->ad_flags = (int)value;
933 break;
5ed44076
MD		 934 default:
935 panic("bad ivar write request (%d)", index);
936 return (ENOENT);
937 }
938
939 return (0);
940}
941
5ed44076
MD		 942/*
943 * Handle child resource allocation/removal
944 */
c8b4f0e6
YT		 945static struct resource_list *
946acpi_get_rlist(device_t dev, device_t child)
5ed44076 947{
c8b4f0e6 948 struct acpi_device *ad;
5ed44076 949
c8b4f0e6
YT		 950 ad = device_get_ivars(child);
951 return (&ad->ad_rl);
5ed44076
MD		 952}
953
10f97674
AP		 954/*
955 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
956 * duplicates, we merge any in the sysresource attach routine.
957 */
958static int
959acpi_sysres_alloc(device_t dev)
960{
961 struct resource *res;
962 struct resource_list *rl;
963 struct resource_list_entry *rle;
964 struct rman *rm;
965 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
966 device_t *children;
967 int child_count, i;
968 /*
969 * Probe/attach any sysresource devices. This would be unnecessary if we
970 * had multi-pass probe/attach.
971 */
972 if (device_get_children(dev, &children, &child_count) != 0)
973 return (ENXIO);
974 for (i = 0; i < child_count; i++) {
975 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
976 device_probe_and_attach(children[i]);
977 }
978 kfree(children, M_TEMP);
979
980 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
981 if(!rl)
982 return 0;
983 SLIST_FOREACH(rle, rl, link) {
984 if (rle->res != NULL) {
985 device_printf(dev, "duplicate resource for %lx\n", rle->start);
986 continue;
987 }
988
989 /* Only memory and IO resources are valid here. */
990 switch (rle->type) {
991 case SYS_RES_IOPORT:
992 rm = &acpi_rman_io;
993 break;
994 case SYS_RES_MEMORY:
995 rm = &acpi_rman_mem;
996 break;
997 default:
998 continue;
999 }
1000
1001 /* Pre-allocate resource and add to our rman pool. */
1002 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1003 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1004 if (res != NULL) {
1005 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1006 rle->res = res;
1007 } else
1008 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1009 rle->start, rle->count, rle->type);
1010 }
1011 return (0);
1012}
1013
5ed44076
MD		 1014static struct resource *
1015acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
c8b4f0e6 1016 u_long start, u_long end, u_long count, u_int flags)
5ed44076 1017{
10f97674 1018 ACPI_RESOURCE ares;
5ed44076
MD		 1019 struct acpi_device *ad = device_get_ivars(child);
1020 struct resource_list *rl = &ad->ad_rl;
c8b4f0e6
YT		 1021 struct resource_list_entry *rle;
1022 struct resource *res;
1023 struct rman *rm;
10f97674
AP		 1024
1025 res = NULL;
1026
1027 /* We only handle memory and IO resources through rman. */
1028 switch (type) {
1029 case SYS_RES_IOPORT:
1030 rm = &acpi_rman_io;
1031 break;
1032 case SYS_RES_MEMORY:
1033 rm = &acpi_rman_mem;
1034 break;
1035 default:
1036 rm = NULL;
1037 }
1038
1039 ACPI_SERIAL_BEGIN(acpi);
c8b4f0e6
YT		 1040
1041 /*
1042 * If this is an allocation of the "default" range for a given RID, and
1043 * we know what the resources for this device are (i.e., they're on the
1044 * child's resource list), use those start/end values.
1045 */
10f97674 1046 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
c8b4f0e6
YT		 1047 rle = resource_list_find(rl, type, *rid);
1048 if (rle == NULL)
10f97674 1049 goto out;
c8b4f0e6
YT		 1050 start = rle->start;
1051 end = rle->end;
1052 count = rle->count;
1053 }
1054
10f97674
AP		 1055 /*
1056 * If this is an allocation of a specific range, see if we can satisfy
1057 * the request from our system resource regions. If we can't, pass the
1058 * request up to the parent.
1059 */
1060 if (start + count - 1 == end && rm != NULL)
1061 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1062 child);
1063 if (res == NULL) {
1064 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1065 start, end, count, flags);
1066 } else {
1067 rman_set_rid(res, *rid);
5ed44076 1068
10f97674
AP		 1069 /* If requested, activate the resource using the parent's method. */
1070 if (flags & RF_ACTIVE)
1071 if (bus_activate_resource(child, type, *rid, res) != 0) {
1072 rman_release_resource(res);
1073 res = NULL;
1074 goto out;
1075 }
c8b4f0e6
YT		 1076 }
1077
10f97674
AP		 1078 if (res != NULL && device_get_parent(child) == bus)
1079 switch (type) {
1080 case SYS_RES_IRQ:
1081 /*
1082 * Since bus_config_intr() takes immediate effect, we cannot
1083 * configure the interrupt associated with a device when we
1084 * parse the resources but have to defer it until a driver
1085 * actually allocates the interrupt via bus_alloc_resource().
1086 *
1087 * XXX: Should we handle the lookup failing?
1088 */
10f97674
AP		 1089 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1090 acpi_config_intr(child, &ares);
1091 else
1092 kprintf("irq resource not found\n");
1093 break;
c8b4f0e6
YT		 1094 }
1095
10f97674
AP		 1096out:
1097 ACPI_SERIAL_END(acpi);
c8b4f0e6 1098 return (res);
5ed44076
MD		 1099}
1100
1101static int
c8b4f0e6
YT		 1102acpi_release_resource(device_t bus, device_t child, int type, int rid,
1103 struct resource *r)
5ed44076 1104{
10f97674 1105 struct rman *rm;
c8b4f0e6
YT		 1106 int ret;
1107
10f97674
AP		 1108 /* We only handle memory and IO resources through rman. */
1109 switch (type) {
1110 case SYS_RES_IOPORT:
1111 rm = &acpi_rman_io;
1112 break;
1113 case SYS_RES_MEMORY:
1114 rm = &acpi_rman_mem;
1115 break;
1116 default:
1117 rm = NULL;
1118 }
1119
1120 ACPI_SERIAL_BEGIN(acpi);
1121
c8b4f0e6 1122 /*
10f97674
AP		 1123 * If this resource belongs to one of our internal managers,
1124 * deactivate it and release it to the local pool. If it doesn't,
1125 * pass this request up to the parent.
c8b4f0e6 1126 */
10f97674 1127 if (rm != NULL && rman_is_region_manager(r, rm)) {
c8b4f0e6
YT		 1128 if (rman_get_flags(r) & RF_ACTIVE) {
1129 ret = bus_deactivate_resource(child, type, rid, r);
1130 if (ret != 0)
10f97674 1131 goto out;
c8b4f0e6
YT		 1132 }
1133 ret = rman_release_resource(r);
1134 } else
1135 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
5ed44076 1136
10f97674
AP		 1137out:
1138 ACPI_SERIAL_END(acpi);
c8b4f0e6 1139 return (ret);
5ed44076
MD		 1140}
1141
10f97674
AP		 1142static void
1143acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1144{
1145 struct resource_list *rl;
1146
1147 rl = acpi_get_rlist(bus, child);
1148 resource_list_delete(rl, type, rid);
1149}
1150
5ed44076 1151/* Allocate an IO port or memory resource, given its GAS. */
10f97674
AP		 1152int
1153acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1154 struct resource **res, u_int flags)
5ed44076 1155{
10f97674 1156 int error, res_type;
5ed44076 1157
10f97674
AP		 1158 error = ENOMEM;
1159 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1160 return (EINVAL);
5ed44076 1161
10f97674 1162 /* We only support memory and IO spaces. */
e1eeedd0 1163 switch (gas->SpaceId) {
5ed44076 1164 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
10f97674 1165 res_type = SYS_RES_MEMORY;
5ed44076
MD		 1166 break;
1167 case ACPI_ADR_SPACE_SYSTEM_IO:
10f97674 1168 res_type = SYS_RES_IOPORT;
5ed44076
MD		 1169 break;
1170 default:
10f97674 1171 return (EOPNOTSUPP);
5ed44076
MD		 1172 }
1173
10f97674
AP		 1174 /*
1175 * If the register width is less than 8, assume the BIOS author means
1176 * it is a bit field and just allocate a byte.
1177 */
1178 if (gas->BitWidth && gas->BitWidth < 8)
1179 gas->BitWidth = 8;
5ed44076 1180
10f97674
AP		 1181 /* Validate the address after we're sure we support the space. */
1182 if (gas->Address == 0 || gas->BitWidth == 0)
1183 return (EINVAL);
1184
1185 bus_set_resource(dev, res_type, *rid, gas->Address,
1186 gas->BitWidth / 8);
1187 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1188 if (*res != NULL) {
1189 *type = res_type;
1190 error = 0;
1191 } else
1192 bus_delete_resource(dev, res_type, *rid);
5ed44076 1193
10f97674
AP		 1194 return (error);
1195}
1196
1197/* Probe _HID and _CID for compatible ISA PNP ids. */
5ed44076
MD		 1198static uint32_t
1199acpi_isa_get_logicalid(device_t dev)
1200{
1201 ACPI_DEVICE_INFO *devinfo;
1202 ACPI_BUFFER buf;
1203 ACPI_HANDLE h;
1204 ACPI_STATUS error;
1205 u_int32_t pnpid;
5ed44076
MD		 1206
1207 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1208
1209 pnpid = 0;
1210 buf.Pointer = NULL;
1211 buf.Length = ACPI_ALLOCATE_BUFFER;
1212
5ed44076
MD		 1213 /* Fetch and validate the HID. */
1214 if ((h = acpi_get_handle(dev)) == NULL)
1215 goto out;
1216 error = AcpiGetObjectInfo(h, &buf);
1217 if (ACPI_FAILURE(error))
1218 goto out;
1219 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1220
1221 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1222 pnpid = PNP_EISAID(devinfo->HardwareId.Value);
1223
1224out:
1225 if (buf.Pointer != NULL)
1226 AcpiOsFree(buf.Pointer);
5ed44076
MD		 1227 return_VALUE (pnpid);
1228}
1229
1230static int
1231acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1232{
1233 ACPI_DEVICE_INFO *devinfo;
1234 ACPI_BUFFER buf;
1235 ACPI_HANDLE h;
1236 ACPI_STATUS error;
1237 uint32_t *pnpid;
1238 int valid, i;
5ed44076
MD		 1239
1240 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1241
1242 pnpid = cids;
1243 valid = 0;
1244 buf.Pointer = NULL;
1245 buf.Length = ACPI_ALLOCATE_BUFFER;
1246
5ed44076
MD		 1247 /* Fetch and validate the CID */
1248 if ((h = acpi_get_handle(dev)) == NULL)
1249 goto out;
1250 error = AcpiGetObjectInfo(h, &buf);
1251 if (ACPI_FAILURE(error))
1252 goto out;
1253 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1254 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1255 goto out;
1256
1257 if (devinfo->CompatibilityId.Count < count)
1258 count = devinfo->CompatibilityId.Count;
1259 for (i = 0; i < count; i++) {
1260 if (strncmp(devinfo->CompatibilityId.Id[i].Value, "PNP", 3) != 0)
1261 continue;
1262 *pnpid++ = PNP_EISAID(devinfo->CompatibilityId.Id[i].Value);
1263 valid++;
1264 }
1265
1266out:
1267 if (buf.Pointer != NULL)
1268 AcpiOsFree(buf.Pointer);
5ed44076
MD		 1269 return_VALUE (valid);
1270}
1271
676159d4
HT		 1272static char *
1273acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1274{
1275 ACPI_HANDLE h;
1276 int i;
1277
1278 h = acpi_get_handle(dev);
1279 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1280 return (NULL);
1281
1282 /* Try to match one of the array of IDs with a HID or CID. */
1283 for (i = 0; ids[i] != NULL; i++) {
1284 if (acpi_MatchHid(h, ids[i]))
1285 return (ids[i]);
1286 }
1287 return (NULL);
1288}
1289
10f97674
AP		 1290static ACPI_STATUS
1291acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1292 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1293{
1294 ACPI_HANDLE h;
1295
1296 if (dev == NULL)
1297 h = ACPI_ROOT_OBJECT;
1298 else if ((h = acpi_get_handle(dev)) == NULL)
1299 return (AE_BAD_PARAMETER);
1300 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1301}
1302
1303static int
1304acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1305{
1306 struct acpi_softc *sc;
1307 ACPI_HANDLE handle;
1308 ACPI_STATUS status;
1309 char sxd[8];
1310 int error;
1311
1312 sc = device_get_softc(bus);
1313 handle = acpi_get_handle(dev);
1314
1315 /*
1316 * XXX If we find these devices, don't try to power them down.
1317 * The serial and IRDA ports on my T23 hang the system when
1318 * set to D3 and it appears that such legacy devices may
1319 * need special handling in their drivers.
1320 */
1321 if (handle == NULL ||
1322 acpi_MatchHid(handle, "PNP0500") ||
1323 acpi_MatchHid(handle, "PNP0501") ||
1324 acpi_MatchHid(handle, "PNP0502") ||
1325 acpi_MatchHid(handle, "PNP0510") ||
1326 acpi_MatchHid(handle, "PNP0511"))
1327 return (ENXIO);
1328
1329 /*
1330 * Override next state with the value from _SxD, if present. If no
1331 * dstate argument was provided, don't fetch the return value.
1332 */
1333 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1334 if (dstate)
1335 status = acpi_GetInteger(handle, sxd, dstate);
1336 else
1337 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1338
1339 switch (status) {
1340 case AE_OK:
1341 error = 0;
1342 break;
1343 case AE_NOT_FOUND:
1344 error = ESRCH;
1345 break;
1346 default:
1347 error = ENXIO;
1348 break;
1349 }
1350
1351 return (error);
1352}
1353
1354/* Callback arg for our implementation of walking the namespace. */
1355struct acpi_device_scan_ctx {
1356 acpi_scan_cb_t user_fn;
1357 void *arg;
1358 ACPI_HANDLE parent;
1359};
1360
1361static ACPI_STATUS
1362acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1363{
1364 struct acpi_device_scan_ctx *ctx;
1365 device_t dev, old_dev;
1366 ACPI_STATUS status;
1367 ACPI_OBJECT_TYPE type;
1368
1369 /*
1370 * Skip this device if we think we'll have trouble with it or it is
1371 * the parent where the scan began.
1372 */
1373 ctx = (struct acpi_device_scan_ctx *)arg;
1374 if (acpi_avoid(h) || h == ctx->parent)
1375 return (AE_OK);
1376
1377 /* If this is not a valid device type (e.g., a method), skip it. */
1378 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1379 return (AE_OK);
1380 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1381 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1382 return (AE_OK);
1383
1384 /*
1385 * Call the user function with the current device. If it is unchanged
1386 * afterwards, return. Otherwise, we update the handle to the new dev.
1387 */
1388 old_dev = acpi_get_device(h);
1389 dev = old_dev;
1390 status = ctx->user_fn(h, &dev, level, ctx->arg);
1391 if (ACPI_FAILURE(status) || old_dev == dev)
1392 return (status);
1393
1394 /* Remove the old child and its connection to the handle. */
1395 if (old_dev != NULL) {
1396 device_delete_child(device_get_parent(old_dev), old_dev);
1397 AcpiDetachData(h, acpi_fake_objhandler);
1398 }
1399
1400 /* Recreate the handle association if the user created a device. */
1401 if (dev != NULL)
1402 AcpiAttachData(h, acpi_fake_objhandler, dev);
1403
1404 return (AE_OK);
1405}
1406
1407static ACPI_STATUS
1408acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1409 acpi_scan_cb_t user_fn, void *arg)
1410{
1411 ACPI_HANDLE h;
1412 struct acpi_device_scan_ctx ctx;
1413
1414 if (acpi_disabled("children"))
1415 return (AE_OK);
1416
1417 if (dev == NULL)
1418 h = ACPI_ROOT_OBJECT;
1419 else if ((h = acpi_get_handle(dev)) == NULL)
1420 return (AE_BAD_PARAMETER);
1421 ctx.user_fn = user_fn;
1422 ctx.arg = arg;
1423 ctx.parent = h;
1424 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1425 acpi_device_scan_cb, &ctx, NULL));
1426}
1427
1428/*
1429 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1430 * device power states since it's close enough to ACPI.
1431 */
1432static int
1433acpi_set_powerstate_method(device_t bus, device_t child, int state)
1434{
1435 ACPI_HANDLE h;
1436 ACPI_STATUS status;
1437 int error;
1438
1439 error = 0;
1440 h = acpi_get_handle(child);
1441 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1442 return (EINVAL);
1443 if (h == NULL)
1444 return (0);
1445
1446 /* Ignore errors if the power methods aren't present. */
1447 status = acpi_pwr_switch_consumer(h, state);
1448 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1449 && status != AE_BAD_PARAMETER)
1450 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1451 state, acpi_name(h), AcpiFormatException(status));
1452
1453 return (error);
1454}
1455
5ed44076
MD		 1456static int
1457acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1458{
1459 int result, cid_count, i;
1460 uint32_t lid, cids[8];
1461
1462 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1463
1464 /*
1465 * ISA-style drivers attached to ACPI may persist and
1466 * probe manually if we return ENOENT. We never want
1467 * that to happen, so don't ever return it.
1468 */
1469 result = ENXIO;
1470
1471 /* Scan the supplied IDs for a match */
1472 lid = acpi_isa_get_logicalid(child);
1473 cid_count = acpi_isa_get_compatid(child, cids, 8);
1474 while (ids && ids->ip_id) {
1475 if (lid == ids->ip_id) {
1476 result = 0;
1477 goto out;
1478 }
1479 for (i = 0; i < cid_count; i++) {
1480 if (cids[i] == ids->ip_id) {
1481 result = 0;
1482 goto out;
1483 }
1484 }
1485 ids++;
1486 }
1487
1488 out:
10f97674
AP		 1489 if (result == 0 && ids->ip_desc)
1490 device_set_desc(child, ids->ip_desc);
1491
5ed44076
MD		 1492 return_VALUE (result);
1493}
1494
1495/*
4ea06a72
AP		 1496 * Look for a MCFG table. If it is present, use the settings for
1497 * domain (segment) 0 to setup PCI config space access via the memory
1498 * map.
1499 */
1500static void
1501acpi_enable_pcie(void)
1502{
1503 ACPI_TABLE_HEADER *hdr;
1504 ACPI_MCFG_ALLOCATION *alloc, *end;
1505 ACPI_STATUS status;
1506
1507 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1508 if (ACPI_FAILURE(status))
1509 return;
1510
1511 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1512 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1513 while (alloc < end) {
1514 if (alloc->PciSegment == 0) {
1515 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1516 alloc->EndBusNumber);
1517 return;
1518 }
1519 alloc++;
1520 }
1521}
1522
1523/*
10f97674 1524 * Scan all of the ACPI namespace and attach child devices.
5ed44076 1525 *
10f97674
AP		 1526 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1527 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1528 * However, in violation of the spec, some systems place their PCI link
1529 * devices in \, so we have to walk the whole namespace. We check the
1530 * type of namespace nodes, so this should be ok.
5ed44076
MD		 1531 */
1532static void
1533acpi_probe_children(device_t bus)
1534{
5ed44076
MD		 1535
1536 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
5ed44076 1537
5ed44076
MD		 1538 /*
1539 * Scan the namespace and insert placeholders for all the devices that
c8b4f0e6 1540 * we find. We also probe/attach any early devices.
5ed44076
MD		 1541 *
1542 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1543 * we want to create nodes for all devices, not just those that are
1544 * currently present. (This assumes that we don't want to create/remove
1545 * devices as they appear, which might be smarter.)
1546 */
1547 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
10f97674
AP		 1548 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100, acpi_probe_child,
1549 bus, NULL);
5ed44076 1550
10f97674
AP		 1551 /* Pre-allocate resources for our rman from any sysresource devices. */
1552 acpi_sysres_alloc(bus);
c8b4f0e6
YT		 1553 /* Create any static children by calling device identify methods. */
1554 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1555 bus_generic_probe(bus);
1556
10f97674 1557 /* Probe/attach all children, created staticly and from the namespace. */
5ed44076
MD		 1558 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1559 bus_generic_attach(bus);
1560
1561 /*
1562 * Some of these children may have attached others as part of their attach
1563 * process (eg. the root PCI bus driver), so rescan.
1564 */
1565 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1566 bus_generic_attach(bus);
1567
49e48b8a
MD		 1568 /* Attach wake sysctls. */
1569 acpi_wake_sysctl_walk(bus);
1570
5ed44076
MD		 1571 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1572 return_VOID;
1573}
1574
10f97674
AP		 1575/*
1576 * Determine the probe order for a given device.
1577 */
1578static void
1579acpi_probe_order(ACPI_HANDLE handle, int *order)
c8b4f0e6 1580{
10f97674 1581 ACPI_OBJECT_TYPE type;
c8b4f0e6 1582
10f97674
AP		 1583 /*
1584 * 1. I/O port and memory system resource holders
1585 * 2. Embedded controllers (to handle early accesses)
1586 * 3. PCI Link Devices
1587 * 100000. CPUs
1588 */
1589 AcpiGetType(handle, &type);
1590 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
c8b4f0e6 1591 *order = 1;
10f97674 1592 else if (acpi_MatchHid(handle, "PNP0C09"))
c8b4f0e6 1593 *order = 2;
10f97674
AP		 1594 else if (acpi_MatchHid(handle, "PNP0C0F"))
1595 *order = 3;
1596 else if (type == ACPI_TYPE_PROCESSOR)
1597 *order = 100000;
c8b4f0e6
YT		 1598}
1599
5ed44076
MD		 1600/*
1601 * Evaluate a child device and determine whether we might attach a device to
1602 * it.
1603 */
1604static ACPI_STATUS
1605acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1606{
10f97674
AP		 1607 ACPI_OBJECT_TYPE type;
1608 ACPI_HANDLE h;
1609 device_t bus, child;
1610 int order;
1611 char *handle_str, **search;
1612 static char *scopes[] = {"\\_PR_", "\\_TZ_", "\\_SI_", "\\_SB_", NULL};
5ed44076
MD		 1613
1614 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1615
1616 /* Skip this device if we think we'll have trouble with it. */
10f97674 1617 if (acpi_avoid(handle))
5ed44076
MD		 1618 return_ACPI_STATUS (AE_OK);
1619
c8b4f0e6 1620 bus = (device_t)context;
5ed44076 1621 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
10f97674 1622 switch (type) {
5ed44076
MD		 1623 case ACPI_TYPE_DEVICE:
1624 case ACPI_TYPE_PROCESSOR:
1625 case ACPI_TYPE_THERMAL:
1626 case ACPI_TYPE_POWER:
1627 if (acpi_disabled("children"))
1628 break;
1629
10f97674
AP		 1630 /*
1631 * Since we scan from \, be sure to skip system scope objects.
1632 * At least \_SB and \_TZ are detected as devices (ACPI-CA bug?)
1633 */
1634 handle_str = acpi_name(handle);
1635 for (search = scopes; *search != NULL; search++) {
1636 if (strcmp(handle_str, *search) == 0)
1637 break;
1638 }
1639 if (*search != NULL)
1640 break;
1641
5ed44076 1642 /*
10f97674
AP		 1643 * Create a placeholder device for this node. Sort the
1644 * placeholder so that the probe/attach passes will run
1645 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1646 * are reserved for special objects (i.e., system
1647 * resources). CPU devices have a very high order to
1648 * ensure they are probed after other devices.
5ed44076 1649 */
10f97674
AP		 1650 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1651 order = level * 10 + 100;
1652 acpi_probe_order(handle, &order);
c8b4f0e6 1653 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
5ed44076
MD		 1654 if (child == NULL)
1655 break;
c8b4f0e6
YT		 1656
1657 /* Associate the handle with the device_t and vice versa. */
5ed44076 1658 acpi_set_handle(child, handle);
c8b4f0e6 1659 AcpiAttachData(handle, acpi_fake_objhandler, child);
5ed44076
MD		 1660
1661 /*
1662 * Check that the device is present. If it's not present,
1663 * leave it disabled (so that we have a device_t attached to
1664 * the handle, but we don't probe it).
10f97674
AP		 1665 *
1666 * XXX PCI link devices sometimes report "present" but not
1667 * "functional" (i.e. if disabled). Go ahead and probe them
1668 * anyway since we may enable them later.
5ed44076
MD		 1669 */
1670 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
10f97674
AP		 1671 /* Never disable PCI link devices. */
1672 if (acpi_MatchHid(handle, "PNP0C0F"))
1673 break;
1674 /*
1675 * Docking stations should remain enabled since the system
1676 * may be undocked at boot.
1677 */
1678 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1679 break;
1680
5ed44076
MD		 1681 device_disable(child);
1682 break;
1683 }
1684
1685 /*
1686 * Get the device's resource settings and attach them.
1687 * Note that if the device has _PRS but no _CRS, we need
1688 * to decide when it's appropriate to try to configure the
1689 * device. Ignore the return value here; it's OK for the
1690 * device not to have any resources.
1691 */
f9d8cd12 1692 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
5ed44076
MD		 1693 break;
1694 }
1695 }
1696
1697 return_ACPI_STATUS (AE_OK);
1698}
1699
c8b4f0e6
YT		 1700/*
1701 * AcpiAttachData() requires an object handler but never uses it. This is a
1702 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1703 */
1704void
1705acpi_fake_objhandler(ACPI_HANDLE h, UINT32 fn, void *data)
1706{
1707}
1708
5ed44076
MD		 1709static void
1710acpi_shutdown_final(void *arg, int howto)
1711{
10f97674
AP		 1712 struct acpi_softc *sc;
1713 ACPI_STATUS status;
5ed44076 1714
f9d8cd12 1715 /*
10f97674
AP		 1716 * XXX Shutdown code should only run on the BSP (cpuid 0).
1717 * Some chipsets do not power off the system correctly if called from
1718 * an AP.
f9d8cd12 1719 */
10f97674 1720 sc = arg;
5ed44076 1721 if ((howto & RB_POWEROFF) != 0) {
f9d8cd12 1722 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
5ed44076 1723 if (ACPI_FAILURE(status)) {
e3869ec7 1724 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
5ed44076
MD		 1725 AcpiFormatException(status));
1726 return;
1727 }
e3869ec7 1728 kprintf("Powering system off using ACPI\n");
10f97674
AP		 1729 ACPI_DISABLE_IRQS();
1730 status = AcpiEnterSleepState(ACPI_STATE_S5);
1731 if (ACPI_FAILURE(status)) {
1732 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1733 } else {
1734 DELAY(1000000);
1735 kprintf("ACPI power-off failed - timeout\n");
1736 }
1737 } else if ((howto & RB_HALT) == 0 &&
1738 (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) &&
1739 sc->acpi_handle_reboot) {
1740 /* Reboot using the reset register. */
1741 status = AcpiWrite(
1742 AcpiGbl_FADT.ResetValue, &AcpiGbl_FADT.ResetRegister);
1743 if (ACPI_FAILURE(status)) {
1744 kprintf("ACPI reset failed - %s\n", AcpiFormatException(status));
1745 } else {
1746 DELAY(1000000);
1747 kprintf("ACPI reset failed - timeout\n");
1748 }
1749 } else if (sc->acpi_do_disable && panicstr == NULL) {
1750 /*
1751 * Only disable ACPI if the user requested. On some systems, writing
1752 * the disable value to SMI_CMD hangs the system.
1753 */
e3869ec7 1754 kprintf("Shutting down ACPI\n");
5ed44076
MD		 1755 AcpiTerminate();
1756 }
1757}
1758
1759static void
1760acpi_enable_fixed_events(struct acpi_softc *sc)
1761{
1762 static int first_time = 1;
1763
5ed44076 1764 /* Enable and clear fixed events and install handlers. */
e1eeedd0 1765 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
5ed44076
MD		 1766 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1767 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1768 acpi_event_power_button_sleep, sc);
1769 if (first_time)
1770 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1771 }
e1eeedd0 1772 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
5ed44076
MD		 1773 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1774 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1775 acpi_event_sleep_button_sleep, sc);
1776 if (first_time)
1777 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1778 }
1779
1780 first_time = 0;
1781}
1782
1783/*
1784 * Returns true if the device is actually present and should
1785 * be attached to. This requires the present, enabled, UI-visible
1786 * and diagnostics-passed bits to be set.
1787 */
1788BOOLEAN
1789acpi_DeviceIsPresent(device_t dev)
1790{
1791 ACPI_DEVICE_INFO *devinfo;
1792 ACPI_HANDLE h;
1793 ACPI_BUFFER buf;
1794 ACPI_STATUS error;
1795 int ret;
1796
5ed44076
MD		 1797 ret = FALSE;
1798 if ((h = acpi_get_handle(dev)) == NULL)
1799 return (FALSE);
1800 buf.Pointer = NULL;
1801 buf.Length = ACPI_ALLOCATE_BUFFER;
1802 error = AcpiGetObjectInfo(h, &buf);
1803 if (ACPI_FAILURE(error))
1804 return (FALSE);
1805 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1806
1807 /* If no _STA method, must be present */
1808 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1809 ret = TRUE;
1810
1811 /* Return true for 'present' and 'functioning' */
10f97674 1812 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
5ed44076
MD		 1813 ret = TRUE;
1814
1815 AcpiOsFree(buf.Pointer);
1816 return (ret);
1817}
1818
1819/*
1820 * Returns true if the battery is actually present and inserted.
1821 */
1822BOOLEAN
1823acpi_BatteryIsPresent(device_t dev)
1824{
1825 ACPI_DEVICE_INFO *devinfo;
1826 ACPI_HANDLE h;
1827 ACPI_BUFFER buf;
1828 ACPI_STATUS error;
1829 int ret;
1830
5ed44076
MD		 1831 ret = FALSE;
1832 if ((h = acpi_get_handle(dev)) == NULL)
1833 return (FALSE);
1834 buf.Pointer = NULL;
1835 buf.Length = ACPI_ALLOCATE_BUFFER;
1836 error = AcpiGetObjectInfo(h, &buf);
1837 if (ACPI_FAILURE(error))
1838 return (FALSE);
1839 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1840
1841 /* If no _STA method, must be present */
1842 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1843 ret = TRUE;
1844
10f97674
AP		 1845 /* Return true for 'present', 'battery present', and 'functioning' */
1846 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
5ed44076
MD		 1847 ret = TRUE;
1848
1849 AcpiOsFree(buf.Pointer);
1850 return (ret);
1851}
1852
1853/*
c8b4f0e6 1854 * Match a HID string against a handle
5ed44076
MD		 1855 */
1856BOOLEAN
10f97674 1857acpi_MatchHid(ACPI_HANDLE h, const char *hid)
5ed44076
MD		 1858{
1859 ACPI_DEVICE_INFO *devinfo;
5ed44076
MD		 1860 ACPI_BUFFER buf;
1861 ACPI_STATUS error;
1862 int ret, i;
1863
5ed44076 1864 ret = FALSE;
c8b4f0e6
YT		 1865 if (hid == NULL || h == NULL)
1866 return (ret);
5ed44076
MD		 1867 buf.Pointer = NULL;
1868 buf.Length = ACPI_ALLOCATE_BUFFER;
1869 error = AcpiGetObjectInfo(h, &buf);
1870 if (ACPI_FAILURE(error))
c8b4f0e6 1871 return (ret);
5ed44076
MD		 1872 devinfo = (ACPI_DEVICE_INFO *)buf.Pointer;
1873
1874 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
1875 strcmp(hid, devinfo->HardwareId.Value) == 0)
1876 ret = TRUE;
1877 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
1878 for (i = 0; i < devinfo->CompatibilityId.Count; i++) {
1879 if (strcmp(hid, devinfo->CompatibilityId.Id[i].Value) == 0) {
1880 ret = TRUE;
1881 break;
1882 }
1883 }
1884 }
1885
1886 AcpiOsFree(buf.Pointer);
1887 return (ret);
1888}
1889
1890/*
1891 * Return the handle of a named object within our scope, ie. that of (parent)
1892 * or one if its parents.
1893 */
1894ACPI_STATUS
1895acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1896{
1897 ACPI_HANDLE r;
1898 ACPI_STATUS status;
1899
5ed44076
MD		 1900 /* Walk back up the tree to the root */
1901 for (;;) {
1902 status = AcpiGetHandle(parent, path, &r);
1903 if (ACPI_SUCCESS(status)) {
1904 *result = r;
1905 return (AE_OK);
1906 }
10f97674 1907 /* XXX Return error here? */
5ed44076
MD		 1908 if (status != AE_NOT_FOUND)
1909 return (AE_OK);
1910 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1911 return (AE_NOT_FOUND);
1912 parent = r;
1913 }
1914}
1915
f9d8cd12
MD		 1916/* Find the difference between two PM tick counts. */
1917uint32_t
1918acpi_TimerDelta(uint32_t end, uint32_t start)
1919{
1920 uint32_t delta;
1921
1922 if (end >= start)
1923 delta = end - start;
10f97674 1924 else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
f9d8cd12 1925 delta = ((0xFFFFFFFF - start) + end + 1);
10f97674
AP		 1926 else
1927 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
f9d8cd12
MD		 1928 return (delta);
1929}
1930
5ed44076
MD		 1931/*
1932 * Allocate a buffer with a preset data size.
1933 */
1934ACPI_BUFFER *
1935acpi_AllocBuffer(int size)
1936{
1937 ACPI_BUFFER *buf;
1938
10f97674
AP		 1939 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
1940 return (NULL);
5ed44076
MD		 1941 buf->Length = size;
1942 buf->Pointer = (void *)(buf + 1);
1943 return (buf);
1944}
1945
f9d8cd12
MD		 1946ACPI_STATUS
1947acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1948{
1949 ACPI_OBJECT arg1;
1950 ACPI_OBJECT_LIST args;
1951
f9d8cd12
MD		 1952 arg1.Type = ACPI_TYPE_INTEGER;
1953 arg1.Integer.Value = number;
1954 args.Count = 1;
1955 args.Pointer = &arg1;
1956
1957 return (AcpiEvaluateObject(handle, path, &args, NULL));
1958}
1959
5ed44076
MD		 1960/*
1961 * Evaluate a path that should return an integer.
1962 */
1963ACPI_STATUS
f9d8cd12 1964acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
5ed44076
MD		 1965{
1966 ACPI_STATUS status;
1967 ACPI_BUFFER buf;
1968 ACPI_OBJECT param;
1969
5ed44076
MD		 1970 if (handle == NULL)
1971 handle = ACPI_ROOT_OBJECT;
1972
1973 /*
1974 * Assume that what we've been pointed at is an Integer object, or
1975 * a method that will return an Integer.
1976 */
1977 buf.Pointer = &param;
1978 buf.Length = sizeof(param);
1979 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1980 if (ACPI_SUCCESS(status)) {
1981 if (param.Type == ACPI_TYPE_INTEGER)
1982 *number = param.Integer.Value;
1983 else
1984 status = AE_TYPE;
1985 }
1986
1987 /*
1988 * In some applications, a method that's expected to return an Integer
1989 * may instead return a Buffer (probably to simplify some internal
1990 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1991 * convert it into an Integer as best we can.
1992 *
1993 * This is a hack.
1994 */
1995 if (status == AE_BUFFER_OVERFLOW) {
1996 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1997 status = AE_NO_MEMORY;
1998 } else {
1999 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2000 if (ACPI_SUCCESS(status))
2001 status = acpi_ConvertBufferToInteger(&buf, number);
2002 AcpiOsFree(buf.Pointer);
2003 }
2004 }
2005 return (status);
2006}
2007
2008ACPI_STATUS
f9d8cd12 2009acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
5ed44076
MD		 2010{
2011 ACPI_OBJECT *p;
f9d8cd12 2012 UINT8 *val;
5ed44076
MD		 2013 int i;
2014
2015 p = (ACPI_OBJECT *)bufp->Pointer;
2016 if (p->Type == ACPI_TYPE_INTEGER) {
2017 *number = p->Integer.Value;
2018 return (AE_OK);
2019 }
2020 if (p->Type != ACPI_TYPE_BUFFER)
2021 return (AE_TYPE);
2022 if (p->Buffer.Length > sizeof(int))
2023 return (AE_BAD_DATA);
2024
2025 *number = 0;
f9d8cd12 2026 val = p->Buffer.Pointer;
5ed44076 2027 for (i = 0; i < p->Buffer.Length; i++)
f9d8cd12 2028 *number += val[i] << (i * 8);
5ed44076
MD		 2029 return (AE_OK);
2030}
2031
2032/*
2033 * Iterate over the elements of an a package object, calling the supplied
2034 * function for each element.
2035 *
2036 * XXX possible enhancement might be to abort traversal on error.
2037 */
2038ACPI_STATUS
2039acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2040 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2041{
2042 ACPI_OBJECT *comp;
2043 int i;
10f97674 2044
5ed44076
MD		 2045 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2046 return (AE_BAD_PARAMETER);
2047
2048 /* Iterate over components */
2049 i = 0;
2050 comp = pkg->Package.Elements;
2051 for (; i < pkg->Package.Count; i++, comp++)
2052 func(comp, arg);
2053
2054 return (AE_OK);
2055}
2056
2057/*
2058 * Find the (index)th resource object in a set.
2059 */
2060ACPI_STATUS
2061acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2062{
2063 ACPI_RESOURCE *rp;
2064 int i;
2065
2066 rp = (ACPI_RESOURCE *)buf->Pointer;
2067 i = index;
2068 while (i-- > 0) {
10f97674 2069 /* Range check */
5ed44076
MD		 2070 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2071 return (AE_BAD_PARAMETER);
2072
2073 /* Check for terminator */
e1eeedd0 2074 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
5ed44076
MD		 2075 return (AE_NOT_FOUND);
2076 rp = ACPI_NEXT_RESOURCE(rp);
2077 }
2078 if (resp != NULL)
2079 *resp = rp;
2080
2081 return (AE_OK);
2082}
2083
2084/*
2085 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2086 *
2087 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2088 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2089 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2090 * resources.
2091 */
2092#define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2093
2094ACPI_STATUS
2095acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2096{
2097 ACPI_RESOURCE *rp;
2098 void *newp;
10f97674 2099
5ed44076
MD		 2100 /* Initialise the buffer if necessary. */
2101 if (buf->Pointer == NULL) {
2102 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2103 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2104 return (AE_NO_MEMORY);
2105 rp = (ACPI_RESOURCE *)buf->Pointer;
e1eeedd0 2106 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
5ed44076
MD		 2107 rp->Length = 0;
2108 }
2109 if (res == NULL)
2110 return (AE_OK);
10f97674 2111
5ed44076
MD		 2112 /*
2113 * Scan the current buffer looking for the terminator.
2114 * This will either find the terminator or hit the end
2115 * of the buffer and return an error.
2116 */
2117 rp = (ACPI_RESOURCE *)buf->Pointer;
2118 for (;;) {
2119 /* Range check, don't go outside the buffer */
2120 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2121 return (AE_BAD_PARAMETER);
e1eeedd0 2122 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
5ed44076
MD		 2123 break;
2124 rp = ACPI_NEXT_RESOURCE(rp);
2125 }
2126
2127 /*
2128 * Check the size of the buffer and expand if required.
2129 *
2130 * Required size is:
2131 * size of existing resources before terminator +
2132 * size of new resource and header +
2133 * size of terminator.
2134 *
2135 * Note that this loop should really only run once, unless
2136 * for some reason we are stuffing a *really* huge resource.
2137 */
2138 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
e1eeedd0
YT		 2139 res->Length + ACPI_RS_SIZE_NO_DATA +
2140 ACPI_RS_SIZE_MIN) >= buf->Length) {
5ed44076
MD		 2141 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2142 return (AE_NO_MEMORY);
2143 bcopy(buf->Pointer, newp, buf->Length);
2144 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2145 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2146 AcpiOsFree(buf->Pointer);
2147 buf->Pointer = newp;
2148 buf->Length += buf->Length;
2149 }
5ed44076 2150
10f97674
AP		 2151 /* Insert the new resource. */
2152 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2153
2154 /* And add the terminator. */
2155 rp = ACPI_NEXT_RESOURCE(rp);
2156 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2157 rp->Length = 0;
2158
2159 return (AE_OK);
2160}
2161
2162/*
2163 * Set interrupt model.
2164 */
2165ACPI_STATUS
2166acpi_SetIntrModel(int model)
2167{
2168
2169 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2170}
2171
2172/*
2173 * DEPRECATED. This interface has serious deficiencies and will be
2174 * removed.
2175 *
2176 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2177 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2178 */
2179ACPI_STATUS
2180acpi_SetSleepState(struct acpi_softc *sc, int state)
2181{
2182 static int once;
2183
2184 if (!once) {
2185 kprintf(
2186"warning: acpi_SetSleepState() deprecated, need to update your software\n");
2187 once = 1;
2188 }
2189 return (acpi_EnterSleepState(sc, state));
2190}
2191
2192static void
2193acpi_sleep_force(void *arg)
2194{
2195 struct acpi_softc *sc;
2196
2197 kprintf("acpi: suspend request timed out, forcing sleep now\n");
2198 sc = arg;
2199 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2200 kprintf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
2201}
2202
2203/*
2204 * Request that the system enter the given suspend state. All /dev/apm
2205 * devices and devd(8) will be notified. Userland then has a chance to
2206 * save state and acknowledge the request. The system sleeps once all
2207 * acks are in.
2208 */
2209int
2210acpi_ReqSleepState(struct acpi_softc *sc, int state)
2211{
5c7ffd75 2212#ifdef notyet
10f97674 2213 struct apm_clone_data *clone;
5c7ffd75 2214#endif
10f97674
AP		 2215
2216 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2217 return (EINVAL);
2218
2219 /* S5 (soft-off) should be entered directly with no waiting. */
2220 if (state == ACPI_STATE_S5) {
2221 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2222 return (0);
2223 else
2224 return (ENXIO);
2225 }
2226
2227#if !defined(__i386__)
2228 /* This platform does not support acpi suspend/resume. */
2229 return (EOPNOTSUPP);
2230#endif
2231
2232 /* If a suspend request is already in progress, just return. */
2233 ACPI_LOCK(acpi);
2234 if (sc->acpi_next_sstate != 0) {
2235 ACPI_UNLOCK(acpi);
2236 return (0);
2237 }
2238
2239 /* Record the pending state and notify all apm devices. */
2240 sc->acpi_next_sstate = state;
2241#if 0
2242 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2243 clone->notify_status = APM_EV_NONE;
2244 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2245 selwakeuppri(&clone->sel_read, PZERO);
2246 KNOTE_UNLOCKED(&clone->sel_read.si_note, 0);
2247 }
2248 }
2249#endif
2250
2251 /* If devd(8) is not running, immediately enter the sleep state. */
2252 if (devctl_process_running() == FALSE) {
2253 ACPI_UNLOCK(acpi);
2254 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2255 return (0);
2256 } else {
2257 return (ENXIO);
2258 }
2259 }
2260
2261 /* Now notify devd(8) also. */
2262 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2263
2264 /*
2265 * Set a timeout to fire if userland doesn't ack the suspend request
2266 * in time. This way we still eventually go to sleep if we were
2267 * overheating or running low on battery, even if userland is hung.
2268 * We cancel this timeout once all userland acks are in or the
2269 * suspend request is aborted.
2270 */
2271 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2272 ACPI_UNLOCK(acpi);
2273 return (0);
5ed44076
MD		 2274}
2275
2276/*
10f97674
AP		 2277 * Acknowledge (or reject) a pending sleep state. The caller has
2278 * prepared for suspend and is now ready for it to proceed. If the
2279 * error argument is non-zero, it indicates suspend should be cancelled
2280 * and gives an errno value describing why. Once all votes are in,
2281 * we suspend the system.
5ed44076 2282 */
10f97674
AP		 2283int
2284acpi_AckSleepState(struct apm_clone_data *clone, int error)
5ed44076 2285{
10f97674
AP		 2286 struct acpi_softc *sc;
2287 int ret, sleeping;
5ed44076 2288
10f97674
AP		 2289#if !defined(__i386__)
2290 /* This platform does not support acpi suspend/resume. */
2291 return (EOPNOTSUPP);
2292#endif
2293
2294 /* If no pending sleep state, return an error. */
2295 ACPI_LOCK(acpi);
2296 sc = clone->acpi_sc;
2297 if (sc->acpi_next_sstate == 0) {
2298 ACPI_UNLOCK(acpi);
2299 return (ENXIO);
2300 }
2301
2302 /* Caller wants to abort suspend process. */
2303 if (error) {
2304 sc->acpi_next_sstate = 0;
2305 callout_stop(&sc->susp_force_to);
2306 kprintf("acpi: listener on %s cancelled the pending suspend\n",
2307 devtoname(clone->cdev));
2308 ACPI_UNLOCK(acpi);
2309 return (0);
2310 }
2311
2312 /*
2313 * Mark this device as acking the suspend request. Then, walk through
2314 * all devices, seeing if they agree yet. We only count devices that
2315 * are writable since read-only devices couldn't ack the request.
2316 */
2317 clone->notify_status = APM_EV_ACKED;
2318 sleeping = TRUE;
2319 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2320 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2321 clone->notify_status != APM_EV_ACKED) {
2322 sleeping = FALSE;
2323 break;
2324 }
2325 }
2326
2327 /* If all devices have voted "yes", we will suspend now. */
2328 if (sleeping)
2329 callout_stop(&sc->susp_force_to);
2330 ACPI_UNLOCK(acpi);
2331 ret = 0;
2332 if (sleeping) {
2333 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2334 ret = ENODEV;
2335 }
2336
2337 return (ret);
2338}
5ed44076
MD		 2339
2340static void
2341acpi_sleep_enable(void *arg)
2342{
10f97674 2343
5ed44076
MD		 2344 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2345}
2346
10f97674
AP		 2347enum acpi_sleep_state {
2348 ACPI_SS_NONE,
2349 ACPI_SS_GPE_SET,
2350 ACPI_SS_DEV_SUSPEND,
2351 ACPI_SS_SLP_PREP,
2352 ACPI_SS_SLEPT,
2353};
2354
5ed44076 2355/*
10f97674 2356 * Enter the desired system sleep state.
5ed44076
MD		 2357 *
2358 * Currently we support S1-S5 but S4 is only S4BIOS
2359 */
10f97674
AP		 2360static ACPI_STATUS
2361acpi_EnterSleepState(struct acpi_softc *sc, int state)
5ed44076 2362{
10f97674 2363 ACPI_STATUS status;
5ed44076
MD		 2364 UINT8 TypeA;
2365 UINT8 TypeB;
10f97674 2366 enum acpi_sleep_state slp_state;
5ed44076
MD		 2367
2368 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
5ed44076 2369
10f97674
AP		 2370 /* Re-entry once we're suspending is not allowed. */
2371 status = AE_OK;
2372 ACPI_LOCK(acpi);
2373 if (sc->acpi_sleep_disabled) {
2374 ACPI_UNLOCK(acpi);
2375 kprintf("acpi: suspend request ignored (not ready yet)\n");
2376 return (AE_ERROR);
2377 }
2378 sc->acpi_sleep_disabled = 1;
2379 ACPI_UNLOCK(acpi);
5ed44076 2380
10f97674
AP		 2381 /*
2382 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2383 * drivers need this.
2384 */
2385 //get_mplock();
2386 slp_state = ACPI_SS_NONE;
5ed44076
MD		 2387 switch (state) {
2388 case ACPI_STATE_S1:
2389 case ACPI_STATE_S2:
2390 case ACPI_STATE_S3:
2391 case ACPI_STATE_S4:
10f97674 2392 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
5ed44076
MD		 2393 if (status == AE_NOT_FOUND) {
2394 device_printf(sc->acpi_dev,
2395 "Sleep state S%d not supported by BIOS\n", state);
2396 break;
2397 } else if (ACPI_FAILURE(status)) {
2398 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2399 AcpiFormatException(status));
2400 break;
2401 }
2402
2403 sc->acpi_sstate = state;
5ed44076 2404
10f97674
AP		 2405 /* Enable any GPEs as appropriate and requested by the user. */
2406 acpi_wake_prep_walk(state);
2407 slp_state = ACPI_SS_GPE_SET;
49e48b8a 2408
10f97674
AP		 2409 /*
2410 * Inform all devices that we are going to sleep. If at least one
2411 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2412 *
2413 * XXX Note that a better two-pass approach with a 'veto' pass
2414 * followed by a "real thing" pass would be better, but the current
2415 * bus interface does not provide for this.
2416 */
5ed44076 2417 if (DEVICE_SUSPEND(root_bus) != 0) {
10f97674
AP		 2418 device_printf(sc->acpi_dev, "device_suspend failed\n");
2419 break;
5ed44076 2420 }
10f97674
AP		 2421 slp_state = ACPI_SS_DEV_SUSPEND;
2422
2423 /* If testing device suspend only, back out of everything here. */
2424 if (acpi_susp_bounce)
2425 break;
5ed44076
MD		 2426
2427 status = AcpiEnterSleepStatePrep(state);
2428 if (ACPI_FAILURE(status)) {
2429 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2430 AcpiFormatException(status));
2431 break;
2432 }
10f97674 2433 slp_state = ACPI_SS_SLP_PREP;
5ed44076
MD		 2434
2435 if (sc->acpi_sleep_delay > 0)
2436 DELAY(sc->acpi_sleep_delay * 1000000);
2437
2438 if (state != ACPI_STATE_S1) {
2439 acpi_sleep_machdep(sc, state);
10f97674 2440
5ed44076
MD		 2441 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2442 if (state == ACPI_STATE_S4)
2443 AcpiEnable();
2444 } else {
10f97674
AP		 2445 ACPI_DISABLE_IRQS();
2446 status = AcpiEnterSleepState(state);
5ed44076
MD		 2447 if (ACPI_FAILURE(status)) {
2448 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2449 AcpiFormatException(status));
2450 break;
2451 }
2452 }
10f97674 2453 slp_state = ACPI_SS_SLEPT;
5ed44076
MD		 2454 break;
2455 case ACPI_STATE_S5:
2456 /*
2457 * Shut down cleanly and power off. This will call us back through the
2458 * shutdown handlers.
2459 */
2460 shutdown_nice(RB_POWEROFF);
2461 break;
2462 case ACPI_STATE_S0:
2463 default:
2464 status = AE_BAD_PARAMETER;
2465 break;
2466 }
2467
10f97674
AP		 2468 /*
2469 * Back out state according to how far along we got in the suspend
2470 * process. This handles both the error and success cases.
2471 */
2472 sc->acpi_next_sstate = 0;
2473 if (slp_state >= ACPI_SS_GPE_SET) {
2474 acpi_wake_prep_walk(state);
2475 sc->acpi_sstate = ACPI_STATE_S0;
2476 }
2477 if (slp_state >= ACPI_SS_SLP_PREP)
2478 AcpiLeaveSleepState(state);
2479 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2480 DEVICE_RESUME(root_bus);
2481 if (slp_state >= ACPI_SS_SLEPT)
2482 acpi_enable_fixed_events(sc);
2483
2484 /* Allow another sleep request after a while. */
2485 /* XXX: needs timeout */
2486 if (state != ACPI_STATE_S5)
2487 acpi_sleep_enable(sc);
5ed44076 2488
10f97674
AP		 2489 /* Run /etc/rc.resume after we are back. */
2490 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2491
2492 //rel_mplock();
5ed44076
MD		 2493 return_ACPI_STATUS (status);
2494}
2495
49e48b8a
MD		 2496/* Initialize a device's wake GPE. */
2497int
2498acpi_wake_init(device_t dev, int type)
2499{
2500 struct acpi_prw_data prw;
2501
49e48b8a
MD		 2502 /* Evaluate _PRW to find the GPE. */
2503 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2504 return (ENXIO);
2505
2506 /* Set the requested type for the GPE (runtime, wake, or both). */
2507 if (ACPI_FAILURE(AcpiSetGpeType(prw.gpe_handle, prw.gpe_bit, type))) {
2508 device_printf(dev, "set GPE type failed\n");
2509 return (ENXIO);
2510 }
2511
2512 return (0);
2513}
2514
2515/* Enable or disable the device's wake GPE. */
2516int
2517acpi_wake_set_enable(device_t dev, int enable)
2518{
2519 struct acpi_prw_data prw;
49e48b8a
MD		 2520 ACPI_STATUS status;
2521 int flags;
2522
10f97674
AP		 2523 /* Make sure the device supports waking the system and get the GPE. */
2524 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
49e48b8a
MD		 2525 return (ENXIO);
2526
10f97674 2527 flags = acpi_get_flags(dev);
49e48b8a
MD		 2528 if (enable) {
2529 status = AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2530 if (ACPI_FAILURE(status)) {
2531 device_printf(dev, "enable wake failed\n");
2532 return (ENXIO);
2533 }
10f97674 2534 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
49e48b8a
MD		 2535 } else {
2536 status = AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
2537 if (ACPI_FAILURE(status)) {
2538 device_printf(dev, "disable wake failed\n");
2539 return (ENXIO);
2540 }
10f97674 2541 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
49e48b8a
MD		 2542 }
2543
2544 return (0);
2545}
2546
10f97674
AP		 2547static int
2548acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
49e48b8a
MD		 2549{
2550 struct acpi_prw_data prw;
10f97674 2551 device_t dev;
49e48b8a 2552
10f97674 2553 /* Check that this is a wake-capable device and get its GPE. */
49e48b8a
MD		 2554 if (acpi_parse_prw(handle, &prw) != 0)
2555 return (ENXIO);
10f97674 2556 dev = acpi_get_device(handle);
49e48b8a
MD		 2557
2558 /*
10f97674
AP		 2559 * The destination sleep state must be less than (i.e., higher power)
2560 * or equal to the value specified by _PRW. If this GPE cannot be
2561 * enabled for the next sleep state, then disable it. If it can and
2562 * the user requested it be enabled, turn on any required power resources
2563 * and set _PSW.
49e48b8a 2564 */
10f97674
AP		 2565 if (sstate > prw.lowest_wake) {
2566 AcpiDisableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
49e48b8a 2567 if (bootverbose)
10f97674
AP		 2568 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2569 acpi_name(handle), sstate);
2570 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2571 acpi_pwr_wake_enable(handle, 1);
49e48b8a 2572 acpi_SetInteger(handle, "_PSW", 1);
10f97674
AP		 2573 if (bootverbose)
2574 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2575 acpi_name(handle), sstate);
49e48b8a
MD		 2576 }
2577
49e48b8a
MD		 2578 return (0);
2579}
2580
10f97674
AP		 2581static int
2582acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
49e48b8a
MD		 2583{
2584 struct acpi_prw_data prw;
10f97674 2585 device_t dev;
49e48b8a 2586
10f97674
AP		 2587 /*
2588 * Check that this is a wake-capable device and get its GPE. Return
2589 * now if the user didn't enable this device for wake.
2590 */
49e48b8a
MD		 2591 if (acpi_parse_prw(handle, &prw) != 0)
2592 return (ENXIO);
10f97674
AP		 2593 dev = acpi_get_device(handle);
2594 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2595 return (0);
49e48b8a
MD		 2596
2597 /*
10f97674
AP		 2598 * If this GPE couldn't be enabled for the previous sleep state, it was
2599 * disabled before going to sleep so re-enable it. If it was enabled,
2600 * clear _PSW and turn off any power resources it used.
49e48b8a 2601 */
10f97674 2602 if (sstate > prw.lowest_wake) {
49e48b8a 2603 AcpiEnableGpe(prw.gpe_handle, prw.gpe_bit, ACPI_NOT_ISR);
10f97674
AP		 2604 if (bootverbose)
2605 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2606 } else {
2607 acpi_SetInteger(handle, "_PSW", 0);
2608 acpi_pwr_wake_enable(handle, 0);
2609 if (bootverbose)
2610 device_printf(dev, "run_prep cleaned up for %s\n",
2611 acpi_name(handle));
2612 }
2613
49e48b8a
MD		 2614 return (0);
2615}
2616
2617static ACPI_STATUS
10f97674 2618acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
49e48b8a 2619{
10f97674 2620 int sstate;
49e48b8a 2621
10f97674
AP		 2622 /* If suspending, run the sleep prep function, otherwise wake. */
2623 sstate = *(int *)context;
2624 if (AcpiGbl_SystemAwakeAndRunning)
2625 acpi_wake_sleep_prep(handle, sstate);
2626 else
2627 acpi_wake_run_prep(handle, sstate);
49e48b8a
MD		 2628 return (AE_OK);
2629}
2630
10f97674 2631/* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
49e48b8a 2632static int
10f97674 2633acpi_wake_prep_walk(int sstate)
49e48b8a
MD		 2634{
2635 ACPI_HANDLE sb_handle;
2636
2637 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle)))
10f97674
AP		 2638 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2639 acpi_wake_prep, &sstate, NULL);
49e48b8a
MD		 2640 return (0);
2641}
2642
2643/* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2644static int
2645acpi_wake_sysctl_walk(device_t dev)
2646{
b955fe7e 2647#ifdef notyet
49e48b8a
MD		 2648 int error, i, numdevs;
2649 device_t *devlist;
2650 device_t child;
10f97674 2651 ACPI_STATUS status;
49e48b8a
MD		 2652
2653 error = device_get_children(dev, &devlist, &numdevs);
10f97674
AP		 2654 if (error != 0 || numdevs == 0) {
2655 if (numdevs == 0)
2656 kfree(devlist, M_TEMP);
49e48b8a 2657 return (error);
10f97674 2658 }
49e48b8a
MD		 2659 for (i = 0; i < numdevs; i++) {
2660 child = devlist[i];
10f97674 2661 acpi_wake_sysctl_walk(child);
49e48b8a
MD		 2662 if (!device_is_attached(child))
2663 continue;
10f97674
AP		 2664 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2665 if (ACPI_SUCCESS(status)) {
49e48b8a
MD		 2666 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2667 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2668 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2669 acpi_wake_set_sysctl, "I", "Device set to wake the system");
49e48b8a 2670 }
49e48b8a 2671 }
efda3bd0 2672 kfree(devlist, M_TEMP);
b955fe7e 2673#endif
49e48b8a
MD		 2674
2675 return (0);
2676}
2677
b955fe7e 2678#ifdef notyet
49e48b8a
MD		 2679/* Enable or disable wake from userland. */
2680static int
2681acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2682{
2683 int enable, error;
2684 device_t dev;
2685
2686 dev = (device_t)arg1;
10f97674 2687 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
49e48b8a
MD		 2688
2689 error = sysctl_handle_int(oidp, &enable, 0, req);
2690 if (error != 0 || req->newptr == NULL)
2691 return (error);
2692 if (enable != 0 && enable != 1)
2693 return (EINVAL);
2694
2695 return (acpi_wake_set_enable(dev, enable));
2696}
b955fe7e 2697#endif
49e48b8a
MD		 2698
2699/* Parse a device's _PRW into a structure. */
10f97674 2700int
49e48b8a
MD		 2701acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2702{
2703 ACPI_STATUS status;
2704 ACPI_BUFFER prw_buffer;
2705 ACPI_OBJECT *res, *res2;
10f97674 2706 int error, i, power_count;
49e48b8a
MD		 2707
2708 if (h == NULL || prw == NULL)
2709 return (EINVAL);
2710
2711 /*
2712 * The _PRW object (7.2.9) is only required for devices that have the
2713 * ability to wake the system from a sleeping state.
2714 */
2715 error = EINVAL;
2716 prw_buffer.Pointer = NULL;
2717 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2718 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2719 if (ACPI_FAILURE(status))
2720 return (ENOENT);
2721 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2722 if (res == NULL)
2723 return (ENOENT);
2724 if (!ACPI_PKG_VALID(res, 2))
2725 goto out;
2726
2727 /*
2728 * Element 1 of the _PRW object:
2729 * The lowest power system sleeping state that can be entered while still
2730 * providing wake functionality. The sleeping state being entered must
2731 * be less than (i.e., higher power) or equal to this value.
2732 */
2733 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2734 goto out;
2735
2736 /*
2737 * Element 0 of the _PRW object:
2738 */
2739 switch (res->Package.Elements[0].Type) {
2740 case ACPI_TYPE_INTEGER:
2741 /*
2742 * If the data type of this package element is numeric, then this
2743 * _PRW package element is the bit index in the GPEx_EN, in the
2744 * GPE blocks described in the FADT, of the enable bit that is
2745 * enabled for the wake event.
2746 */
2747 prw->gpe_handle = NULL;
2748 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2749 error = 0;
2750 break;
2751 case ACPI_TYPE_PACKAGE:
2752 /*
2753 * If the data type of this package element is a package, then this
2754 * _PRW package element is itself a package containing two
2755 * elements. The first is an object reference to the GPE Block
2756 * device that contains the GPE that will be triggered by the wake
2757 * event. The second element is numeric and it contains the bit
2758 * index in the GPEx_EN, in the GPE Block referenced by the
2759 * first element in the package, of the enable bit that is enabled for
2760 * the wake event.
2761 *
2762 * For example, if this field is a package then it is of the form:
2763 * Package() {\_SB.PCI0.ISA.GPE, 2}
2764 */
2765 res2 = &res->Package.Elements[0];
2766 if (!ACPI_PKG_VALID(res2, 2))
2767 goto out;
2768 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2769 if (prw->gpe_handle == NULL)
2770 goto out;
2771 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2772 goto out;
2773 error = 0;
2774 break;
2775 default:
2776 goto out;
2777 }
2778
10f97674
AP		 2779 /* Elements 2 to N of the _PRW object are power resources. */
2780 power_count = res->Package.Count - 2;
2781 if (power_count > ACPI_PRW_MAX_POWERRES) {
2782 kprintf("ACPI device %s has too many power resources\n", acpi_name(h));
2783 power_count = 0;
2784 }
2785 prw->power_res_count = power_count;
2786 for (i = 0; i < power_count; i++)
2787 prw->power_res[i] = res->Package.Elements[i];
49e48b8a
MD		 2788
2789out:
2790 if (prw_buffer.Pointer != NULL)
2791 AcpiOsFree(prw_buffer.Pointer);
2792 return (error);
2793}
2794
5ed44076 2795/*
5ed44076
MD		 2796 * ACPI Event Handlers
2797 */
2798
2799/* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2800
2801static void
2802acpi_system_eventhandler_sleep(void *arg, int state)
2803{
10f97674
AP		 2804 int ret;
2805
5ed44076
MD		 2806 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2807
10f97674
AP		 2808 /* Check if button action is disabled. */
2809 if (state == ACPI_S_STATES_MAX + 1)
2810 return;
2811
2812 /* Request that the system prepare to enter the given suspend state. */
2813 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2814 if (ret != 0)
2815 kprintf("acpi: request to enter state S%d failed (err %d)\n",
2816 state, ret);
2817
5ed44076
MD		 2818 return_VOID;
2819}
2820
2821static void
2822acpi_system_eventhandler_wakeup(void *arg, int state)
2823{
5ed44076 2824
10f97674 2825 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
5ed44076 2826
10f97674 2827 /* Currently, nothing to do for wakeup. */
5ed44076
MD		 2828
2829 return_VOID;
2830}
2831
2832/*
2833 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2834 */
2835UINT32
2836acpi_event_power_button_sleep(void *context)
2837{
2838 struct acpi_softc *sc = (struct acpi_softc *)context;
2839
2840 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2841
2842 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2843
2844 return_VALUE (ACPI_INTERRUPT_HANDLED);
2845}
2846
2847UINT32
2848acpi_event_power_button_wake(void *context)
2849{
2850 struct acpi_softc *sc = (struct acpi_softc *)context;
2851
2852 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2853
2854 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2855
2856 return_VALUE (ACPI_INTERRUPT_HANDLED);
2857}
2858
2859UINT32
2860acpi_event_sleep_button_sleep(void *context)
2861{
2862 struct acpi_softc *sc = (struct acpi_softc *)context;
2863
2864 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2865
2866 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2867
2868 return_VALUE (ACPI_INTERRUPT_HANDLED);
2869}
2870
2871UINT32
2872acpi_event_sleep_button_wake(void *context)
2873{
2874 struct acpi_softc *sc = (struct acpi_softc *)context;
2875
2876 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2877
2878 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2879
2880 return_VALUE (ACPI_INTERRUPT_HANDLED);
2881}
2882
2883/*
10f97674
AP		 2884 * XXX This static buffer is suboptimal. There is no locking so only
2885 * use this for single-threaded callers.
5ed44076 2886 */
5ed44076
MD		 2887char *
2888acpi_name(ACPI_HANDLE handle)
2889{
10f97674
AP		 2890 ACPI_BUFFER buf;
2891 static char data[256];
5ed44076 2892
10f97674
AP		 2893 buf.Length = sizeof(data);
2894 buf.Pointer = data;
5ed44076 2895
10f97674
AP		 2896 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2897 return (data);
2898 return ("(unknown)");
5ed44076
MD		 2899}
2900
2901/*
2902 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2903 * parts of the namespace.
2904 */
2905int
2906acpi_avoid(ACPI_HANDLE handle)
2907{
2908 char *cp, *env, *np;
2909 int len;
2910
2911 np = acpi_name(handle);
2912 if (*np == '\\')
2913 np++;
10f97674 2914 if ((env = kgetenv("debug.acpi.avoid")) == NULL)
5ed44076
MD		 2915 return (0);
2916
2917 /* Scan the avoid list checking for a match */
2918 cp = env;
2919 for (;;) {
10f97674 2920 while (*cp != 0 && isspace(*cp))
5ed44076
MD		 2921 cp++;
2922 if (*cp == 0)
2923 break;
2924 len = 0;
10f97674 2925 while (cp[len] != 0 && !isspace(cp[len]))
5ed44076
MD		 2926 len++;
2927 if (!strncmp(cp, np, len)) {
728aa6ee 2928 kfreeenv(env);
5ed44076
MD		 2929 return(1);
2930 }
2931 cp += len;
2932 }
728aa6ee 2933 kfreeenv(env);
5ed44076
MD		 2934
2935 return (0);
2936}
2937
2938/*
10f97674 2939 * Debugging/bug-avoidance. Disable ACPI subsystem components.
5ed44076
MD		 2940 */
2941int
2942acpi_disabled(char *subsys)
2943{
2944 char *cp, *env;
2945 int len;
2946
bc01a404 2947 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
5ed44076 2948 return (0);
f9d8cd12 2949 if (strcmp(env, "all") == 0) {
728aa6ee 2950 kfreeenv(env);
5ed44076
MD		 2951 return (1);
2952 }
2953
f9d8cd12 2954 /* Scan the disable list, checking for a match. */
5ed44076
MD		 2955 cp = env;
2956 for (;;) {
f9d8cd12 2957 while (*cp != '\0' && isspace(*cp))
5ed44076 2958 cp++;
f9d8cd12 2959 if (*cp == '\0')
5ed44076
MD		 2960 break;
2961 len = 0;
f9d8cd12 2962 while (cp[len] != '\0' && !isspace(cp[len]))
5ed44076 2963 len++;
f9d8cd12 2964 if (strncmp(cp, subsys, len) == 0) {
728aa6ee 2965 kfreeenv(env);
5ed44076
MD		 2966 return (1);
2967 }
2968 cp += len;
2969 }
728aa6ee 2970 kfreeenv(env);
5ed44076
MD		 2971
2972 return (0);
2973}
2974
2975/*
2df6e324
MD		 2976 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2977 * components are enabled by default. The ones that are not have to be
2978 * enabled via debug.acpi.enabled.
2979 */
2980int
2981acpi_enabled(char *subsys)
2982{
10f97674
AP		 2983 char *cp, *env;
2984 int len;
2df6e324 2985
bc01a404 2986 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
10f97674 2987 return (0);
2df6e324 2988 if (strcmp(env, "all") == 0) {
10f97674
AP		 2989 kfreeenv(env);
2990 return (1);
2df6e324
MD		 2991 }
2992
2993 /* Scan the enable list, checking for a match. */
2994 cp = env;
2995 for (;;) {
10f97674
AP		 2996 while (*cp != '\0' && isspace(*cp))
2997 cp++;
2998 if (*cp == '\0')
2999 break;
3000 len = 0;
3001 while (cp[len] != '\0' && !isspace(cp[len]))
3002 len++;
3003 if (strncmp(cp, subsys, len) == 0) {
3004 kfreeenv(env);
3005 return (1);
3006 }
3007 cp += len;
2df6e324 3008 }
728aa6ee 3009 kfreeenv(env);
2df6e324
MD		 3010
3011 return (0);
3012}
3013
3014/*
5ed44076
MD		 3015 * Control interface.
3016 *
3017 * We multiplex ioctls for all participating ACPI devices here. Individual
3018 * drivers wanting to be accessible via /dev/acpi should use the
3019 * register/deregister interface to make their handlers visible.
3020 */
3021struct acpi_ioctl_hook
3022{
3023 TAILQ_ENTRY(acpi_ioctl_hook) link;
3024 u_long cmd;
3025 acpi_ioctl_fn fn;
3026 void *arg;
3027};
3028
3029static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3030static int acpi_ioctl_hooks_initted;
3031
5ed44076
MD		 3032int
3033acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3034{
3035 struct acpi_ioctl_hook *hp;
3036
10f97674
AP		 3037 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3038 return (ENOMEM);
5ed44076
MD		 3039 hp->cmd = cmd;
3040 hp->fn = fn;
3041 hp->arg = arg;
10f97674
AP		 3042
3043 ACPI_LOCK(acpi);
5ed44076
MD		 3044 if (acpi_ioctl_hooks_initted == 0) {
3045 TAILQ_INIT(&acpi_ioctl_hooks);
3046 acpi_ioctl_hooks_initted = 1;
3047 }
3048 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
10f97674
AP		 3049 ACPI_UNLOCK(acpi);
3050
5ed44076
MD		 3051 return (0);
3052}
3053
10f97674 3054void
5ed44076
MD		 3055acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3056{
3057 struct acpi_ioctl_hook *hp;
3058
10f97674 3059 ACPI_LOCK(acpi);
5ed44076 3060 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
10f97674 3061 if (hp->cmd == cmd && hp->fn == fn)
5ed44076
MD		 3062 break;
3063
3064 if (hp != NULL) {
3065 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
efda3bd0 3066 kfree(hp, M_ACPIDEV);
5ed44076 3067 }
10f97674 3068 ACPI_UNLOCK(acpi);
5ed44076
MD		 3069}
3070
3071static int
fef8985e 3072acpiopen(struct dev_open_args *ap)
5ed44076
MD		 3073{
3074 return (0);
3075}
3076
3077static int
fef8985e 3078acpiclose(struct dev_close_args *ap)
5ed44076
MD		 3079{
3080 return (0);
3081}
3082
3083static int
fef8985e 3084acpiioctl(struct dev_ioctl_args *ap)
5ed44076
MD		 3085{
3086 struct acpi_softc *sc;
3087 struct acpi_ioctl_hook *hp;
10f97674 3088 int error, state;
5ed44076 3089
10f97674
AP		 3090 error = 0;
3091 hp = NULL;
fef8985e 3092 sc = ap->a_head.a_dev->si_drv1;
5ed44076
MD		 3093
3094 /*
3095 * Scan the list of registered ioctls, looking for handlers.
3096 */
10f97674
AP		 3097 ACPI_LOCK(acpi);
3098 if (acpi_ioctl_hooks_initted)
5ed44076 3099 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
10f97674
AP		 3100 if (hp->cmd == ap->a_cmd)
3101 break;
5ed44076 3102 }
10f97674
AP		 3103 ACPI_UNLOCK(acpi);
3104 if (hp)
3105 return (hp->fn(ap->a_cmd, ap->a_data, hp->arg));
5ed44076
MD		 3106
3107 /*
3108 * Core ioctls are not permitted for non-writable user.
3109 * Currently, other ioctls just fetch information.
3110 * Not changing system behavior.
3111 */
10f97674
AP		 3112 if ((ap->a_fflag & FWRITE) == 0)
3113 return (EPERM);
5ed44076
MD		 3114
3115 /* Core system ioctls. */
fef8985e 3116 switch (ap->a_cmd) {
10f97674
AP		 3117 case ACPIIO_REQSLPSTATE:
3118 state = *(int *)ap->a_data;
3119 if (state != ACPI_STATE_S5)
3120 error = acpi_ReqSleepState(sc, state);
3121 else {
3122 kprintf("power off via acpi ioctl not supported\n");
5ed44076 3123 error = ENXIO;
10f97674 3124 }
5ed44076 3125 break;
10f97674
AP		 3126 case ACPIIO_ACKSLPSTATE:
3127 error = *(int *)ap->a_data;
3128 error = acpi_AckSleepState(sc->acpi_clone, error);
5ed44076 3129 break;
10f97674
AP		 3130 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3131 error = EINVAL;
fef8985e 3132 state = *(int *)ap->a_data;
10f97674
AP		 3133 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3134 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3135 error = 0;
5ed44076
MD		 3136 break;
3137 default:
10f97674 3138 error = ENXIO;
5ed44076
MD		 3139 break;
3140 }
5ed44076
MD		 3141 return (error);
3142}
3143
3144static int
3145acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3146{
5ed44076 3147 int error;
10f97674 3148 struct sbuf sb;
5ed44076
MD		 3149 UINT8 state, TypeA, TypeB;
3150
10f97674
AP		 3151 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3152 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3153 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3154 sbuf_printf(&sb, "S%d ", state);
3155 sbuf_trim(&sb);
3156 sbuf_finish(&sb);
3157 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3158 sbuf_delete(&sb);
5ed44076
MD		 3159 return (error);
3160}
3161
3162static int
3163acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3164{
3165 char sleep_state[10];
3166 int error;
3167 u_int new_state, old_state;
3168
3169 old_state = *(u_int *)oidp->oid_arg1;
10f97674
AP		 3170 if (old_state > ACPI_S_STATES_MAX + 1)
3171 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3172 else
3173 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
5ed44076
MD		 3174 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3175 if (error == 0 && req->newptr != NULL) {
3176 new_state = ACPI_STATE_S0;
10f97674
AP		 3177 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3178 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
5ed44076 3179 break;
5ed44076
MD		 3180 if (new_state <= ACPI_S_STATES_MAX + 1) {
3181 if (new_state != old_state)
3182 *(u_int *)oidp->oid_arg1 = new_state;
10f97674 3183 } else
5ed44076 3184 error = EINVAL;
5ed44076
MD		 3185 }
3186
3187 return (error);
3188}
3189
3190/* Inform devctl(4) when we receive a Notify. */
3191void
3192acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3193{
3194 char notify_buf[16];
3195 ACPI_BUFFER handle_buf;
3196 ACPI_STATUS status;
3197
3198 if (subsystem == NULL)
3199 return;
3200
3201 handle_buf.Pointer = NULL;
3202 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3203 status = AcpiNsHandleToPathname(h, &handle_buf);
3204 if (ACPI_FAILURE(status))
3205 return;
f8c7a42d 3206 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
5ed44076 3207 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
5ed44076
MD		 3208 AcpiOsFree(handle_buf.Pointer);
3209}
3210
3211#ifdef ACPI_DEBUG
3212/*
3213 * Support for parsing debug options from the kernel environment.
3214 *
3215 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3216 * by specifying the names of the bits in the debug.acpi.layer and
3217 * debug.acpi.level environment variables. Bits may be unset by
3218 * prefixing the bit name with !.
3219 */
3220struct debugtag
3221{
3222 char *name;
3223 UINT32 value;
3224};
3225
3226static struct debugtag dbg_layer[] = {
3227 {"ACPI_UTILITIES", ACPI_UTILITIES},
3228 {"ACPI_HARDWARE", ACPI_HARDWARE},
3229 {"ACPI_EVENTS", ACPI_EVENTS},
3230 {"ACPI_TABLES", ACPI_TABLES},
3231 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3232 {"ACPI_PARSER", ACPI_PARSER},
3233 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3234 {"ACPI_EXECUTER", ACPI_EXECUTER},
3235 {"ACPI_RESOURCES", ACPI_RESOURCES},
3236 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3237 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3238 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3239 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3240
5ed44076
MD		 3241 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3242 {"ACPI_BATTERY", ACPI_BATTERY},
f9d8cd12 3243 {"ACPI_BUS", ACPI_BUS},
5ed44076 3244 {"ACPI_BUTTON", ACPI_BUTTON},
f9d8cd12
MD		 3245 {"ACPI_EC", ACPI_EC},
3246 {"ACPI_FAN", ACPI_FAN},
3247 {"ACPI_POWERRES", ACPI_POWERRES},
5ed44076
MD		 3248 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3249 {"ACPI_THERMAL", ACPI_THERMAL},
f9d8cd12 3250 {"ACPI_TIMER", ACPI_TIMER},
5ed44076
MD		 3251 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3252 {NULL, 0}
3253};
3254
3255static struct debugtag dbg_level[] = {
5ed44076
MD		 3256 {"ACPI_LV_INIT", ACPI_LV_INIT},
3257 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3258 {"ACPI_LV_INFO", ACPI_LV_INFO},
3259 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3260
3261 /* Trace verbosity level 1 [Standard Trace Level] */
3262 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3263 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3264 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3265 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3266 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3267 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3268 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3269 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3270 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3271 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3272 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3273 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3274 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3275 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3276 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3277
3278 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3279 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3280 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3281 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3282 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3283 {"ACPI_LV_ALL", ACPI_LV_ALL},
3284
3285 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3286 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3287 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3288 {"ACPI_LV_IO", ACPI_LV_IO},
3289 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3290 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3291
3292 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3293 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3294 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3295 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3296 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3297 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3298 {NULL, 0}
3299};
3300
3301static void
3302acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3303{
3304 char *ep;
3305 int i, l;
3306 int set;
3307
3308 while (*cp) {
3309 if (isspace(*cp)) {
3310 cp++;
3311 continue;
3312 }
3313 ep = cp;
3314 while (*ep && !isspace(*ep))
3315 ep++;
3316 if (*cp == '!') {
3317 set = 0;
3318 cp++;
3319 if (cp == ep)
3320 continue;
3321 } else {
3322 set = 1;
3323 }
3324 l = ep - cp;
3325 for (i = 0; tag[i].name != NULL; i++) {
3326 if (!strncmp(cp, tag[i].name, l)) {
3327 if (set)
3328 *flag |= tag[i].value;
3329 else
3330 *flag &= ~tag[i].value;
5ed44076
MD		 3331 }
3332 }
3333 cp = ep;
3334 }
3335}
3336
3337static void
3338acpi_set_debugging(void *junk)
3339{
10f97674 3340 char *layer, *level;
5ed44076
MD		 3341
3342 if (cold) {
3343 AcpiDbgLayer = 0;
3344 AcpiDbgLevel = 0;
3345 }
3346
bc01a404
MD		 3347 layer = kgetenv("debug.acpi.layer");
3348 level = kgetenv("debug.acpi.level");
f9d8cd12
MD		 3349 if (layer == NULL && level == NULL)
3350 return;
5ed44076 3351
e3869ec7 3352 kprintf("ACPI set debug");
f9d8cd12
MD		 3353 if (layer != NULL) {
3354 if (strcmp("NONE", layer) != 0)
e3869ec7 3355 kprintf(" layer '%s'", layer);
f9d8cd12 3356 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
728aa6ee 3357 kfreeenv(layer);
f9d8cd12
MD		 3358 }
3359 if (level != NULL) {
3360 if (strcmp("NONE", level) != 0)
e3869ec7 3361 kprintf(" level '%s'", level);
f9d8cd12 3362 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
728aa6ee 3363 kfreeenv(level);
5ed44076 3364 }
e3869ec7 3365 kprintf("\n");
5ed44076 3366}
10f97674
AP		 3367
3368SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3369 NULL);
5ed44076
MD		 3370
3371static int
3372acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3373{
3374 int error, *dbg;
3375 struct debugtag *tag;
3376 struct sbuf sb;
3377
3378 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3379 return (ENOMEM);
3380 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3381 tag = &dbg_layer[0];
3382 dbg = &AcpiDbgLayer;
3383 } else {
3384 tag = &dbg_level[0];
3385 dbg = &AcpiDbgLevel;
3386 }
3387
3388 /* Get old values if this is a get request. */
10f97674 3389 ACPI_SERIAL_BEGIN(acpi);
5ed44076
MD		 3390 if (*dbg == 0) {
3391 sbuf_cpy(&sb, "NONE");
3392 } else if (req->newptr == NULL) {
3393 for (; tag->name != NULL; tag++) {
3394 if ((*dbg & tag->value) == tag->value)
3395 sbuf_printf(&sb, "%s ", tag->name);
3396 }
3397 }
3398 sbuf_trim(&sb);
3399 sbuf_finish(&sb);
3400
f9d8cd12
MD		 3401 /* Copy out the old values to the user. */
3402 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
5ed44076
MD		 3403 sbuf_delete(&sb);
3404
3405 /* If the user is setting a string, parse it. */
3406 if (error == 0 && req->newptr != NULL) {
3407 *dbg = 0;
2382383b 3408 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr);
5ed44076
MD		 3409 acpi_set_debugging(NULL);
3410 }
10f97674 3411 ACPI_SERIAL_END(acpi);
5ed44076
MD		 3412
3413 return (error);
3414}
10f97674 3415
5ed44076
MD		 3416SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3417 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3418SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3419 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
10f97674 3420#endif /* ACPI_DEBUG */
5ed44076
MD		 3421
3422static int
3423acpi_pm_func(u_long cmd, void *arg, ...)
3424{
3425 int state, acpi_state;
3426 int error;
3427 struct acpi_softc *sc;
3428 va_list ap;
3429
3430 error = 0;
3431 switch (cmd) {
3432 case POWER_CMD_SUSPEND:
3433 sc = (struct acpi_softc *)arg;
3434 if (sc == NULL) {
3435 error = EINVAL;
3436 goto out;
3437 }
3438
3439 va_start(ap, arg);
3440 state = va_arg(ap, int);
10f97674 3441 va_end(ap);
5ed44076
MD		 3442
3443 switch (state) {
3444 case POWER_SLEEP_STATE_STANDBY:
3445 acpi_state = sc->acpi_standby_sx;
3446 break;
3447 case POWER_SLEEP_STATE_SUSPEND:
3448 acpi_state = sc->acpi_suspend_sx;
3449 break;
3450 case POWER_SLEEP_STATE_HIBERNATE:
3451 acpi_state = ACPI_STATE_S4;
3452 break;
3453 default:
3454 error = EINVAL;
3455 goto out;
3456 }
3457
10f97674
AP		 3458 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3459 error = ENXIO;
5ed44076
MD		 3460 break;
3461 default:
3462 error = EINVAL;
3463 goto out;
3464 }
3465
3466out:
3467 return (error);
3468}
3469
3470static void
3471acpi_pm_register(void *arg)
3472{
3473 if (!cold || resource_disabled("acpi", 0))
3474 return;
3475
3476 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3477}
3478
ba39e2e0 3479SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
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