acpi: Skip \_SB_ and \_TZ_ only for devices.
[dragonfly.git] / sys / dev / acpica5 / acpi.c
CommitLineData
5ed44076 1/*-
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2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.kfreebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.kfreebsd.org>
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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.
32af04f7
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28 *
29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $
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30 */
31
32#include "opt_acpi.h"
33#include <sys/param.h>
34#include <sys/kernel.h>
35#include <sys/proc.h>
36#include <sys/fcntl.h>
37#include <sys/malloc.h>
10f97674 38#include <sys/module.h>
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39#include <sys/bus.h>
40#include <sys/conf.h>
10f97674 41#include <sys/ioccom.h>
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42#include <sys/reboot.h>
43#include <sys/sysctl.h>
44#include <sys/ctype.h>
45#include <sys/linker.h>
46#include <sys/power.h>
47#include <sys/sbuf.h>
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48#include <sys/device.h>
49#include <sys/spinlock.h>
50#include <sys/spinlock2.h>
5ed44076 51
10f97674 52#include <sys/rman.h>
5ed44076 53#include <bus/isa/isavar.h>
10f97674 54#include <bus/isa/pnpvar.h>
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55
56#include "acpi.h"
57#include <dev/acpica5/acpivar.h>
58#include <dev/acpica5/acpiio.h>
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59#include "achware.h"
60#include "acnamesp.h"
61#include "acglobal.h"
62
63#include "pci_if.h"
4ea06a72 64#include <bus/pci/pci_cfgreg.h>
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65#include <bus/pci/pcivar.h>
66#include <bus/pci/pci_private.h>
67
68#include <vm/vm_param.h>
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69
70MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
71
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72#define GIANT_REQUIRED
73#define mtx_lock(a)
74#define mtx_unlock(a)
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75/* Hooks for the ACPI CA debugging infrastructure */
76#define _COMPONENT ACPI_BUS
77ACPI_MODULE_NAME("ACPI")
78
79static d_open_t acpiopen;
80static d_close_t acpiclose;
81static d_ioctl_t acpiioctl;
82
fef8985e 83static struct dev_ops acpi_ops = {
88abd8b5 84 { "acpi", 0, 0 },
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85 .d_open = acpiopen,
86 .d_close = acpiclose,
87 .d_ioctl = acpiioctl
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88};
89
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90/* Global mutex for locking access to the ACPI subsystem. */
91struct lock acpi_lock;
92/* Bitmap of device quirks. */
93int acpi_quirks;
f9d8cd12 94
5ed44076 95static int acpi_modevent(struct module *mod, int event, void *junk);
10f97674 96static void acpi_identify(driver_t *driver, device_t parent);
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97static int acpi_probe(device_t dev);
98static int acpi_attach(device_t dev);
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99static int acpi_suspend(device_t dev);
100static int acpi_resume(device_t dev);
49e48b8a 101static int acpi_shutdown(device_t dev);
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102static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name,
103 int unit);
5ed44076 104static int acpi_print_child(device_t bus, device_t child);
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105static void acpi_probe_nomatch(device_t bus, device_t child);
106static void acpi_driver_added(device_t dev, driver_t *driver);
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107static int acpi_read_ivar(device_t dev, device_t child, int index,
108 uintptr_t *result);
109static int acpi_write_ivar(device_t dev, device_t child, int index,
110 uintptr_t value);
c8b4f0e6 111static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
10f97674 112static int acpi_sysres_alloc(device_t dev);
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113static struct resource *acpi_alloc_resource(device_t bus, device_t child,
114 int type, int *rid, u_long start, u_long end,
115 u_long count, u_int flags);
116static int acpi_release_resource(device_t bus, device_t child, int type,
117 int rid, struct resource *r);
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118static void acpi_delete_resource(device_t bus, device_t child, int type,
119 int rid);
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120static uint32_t acpi_isa_get_logicalid(device_t dev);
121static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
676159d4 122static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
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123static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
124 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
125 ACPI_BUFFER *ret);
126static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
127 int *dstate);
128static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
129 void *context, void **retval);
130static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
131 int max_depth, acpi_scan_cb_t user_fn, void *arg);
132static int acpi_set_powerstate_method(device_t bus, device_t child,
133 int state);
5ed44076 134static int acpi_isa_pnp_probe(device_t bus, device_t child,
10f97674 135 struct isa_pnp_id *ids);
5ed44076 136static void acpi_probe_children(device_t bus);
10f97674 137static void acpi_probe_order(ACPI_HANDLE handle, int *order);
5ed44076 138static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
10f97674 139 void *context, void **status);
10f97674 140static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
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141static void acpi_shutdown_final(void *arg, int howto);
142static void acpi_enable_fixed_events(struct acpi_softc *sc);
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143static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
144static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
145static int acpi_wake_prep_walk(int sstate);
49e48b8a 146static int acpi_wake_sysctl_walk(device_t dev);
b955fe7e 147#ifdef notyet
49e48b8a 148static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
b955fe7e 149#endif
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150static void acpi_system_eventhandler_sleep(void *arg, int state);
151static void acpi_system_eventhandler_wakeup(void *arg, int state);
152static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
153static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
154static int acpi_pm_func(u_long cmd, void *arg, ...);
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155static int acpi_child_location_str_method(device_t acdev, device_t child,
156 char *buf, size_t buflen);
157static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
158 char *buf, size_t buflen);
4ea06a72 159static void acpi_enable_pcie(void);
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160
161static device_method_t acpi_methods[] = {
162 /* Device interface */
163 DEVMETHOD(device_identify, acpi_identify),
164 DEVMETHOD(device_probe, acpi_probe),
165 DEVMETHOD(device_attach, acpi_attach),
49e48b8a 166 DEVMETHOD(device_shutdown, acpi_shutdown),
5ed44076 167 DEVMETHOD(device_detach, bus_generic_detach),
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168 DEVMETHOD(device_suspend, acpi_suspend),
169 DEVMETHOD(device_resume, acpi_resume),
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170
171 /* Bus interface */
172 DEVMETHOD(bus_add_child, acpi_add_child),
173 DEVMETHOD(bus_print_child, acpi_print_child),
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174 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
175 DEVMETHOD(bus_driver_added, acpi_driver_added),
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176 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
177 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
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178 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
179 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
180 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
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181 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
182 DEVMETHOD(bus_release_resource, acpi_release_resource),
10f97674 183 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
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184 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
185 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
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186 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
187 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
188 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
189 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
190
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191 /* ACPI bus */
192 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
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193 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
194 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
195 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
196
197 /* PCI emulation */
198 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
676159d4 199
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200 /* ISA emulation */
201 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
202
203 {0, 0}
204};
205
206static driver_t acpi_driver = {
207 "acpi",
208 acpi_methods,
209 sizeof(struct acpi_softc),
210};
211
212static devclass_t acpi_devclass;
213DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, 0);
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214MODULE_VERSION(acpi, 1);
215
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216ACPI_SERIAL_DECL(acpi, "ACPI serializer")
217
218/* Local pools for managing system resources for ACPI child devices. */
219static struct rman acpi_rman_io, acpi_rman_mem;
220
221#define ACPI_MINIMUM_AWAKETIME 5
222
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223static const char* sleep_state_names[] = {
224 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
5ed44076 225
10f97674 226SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
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227static char acpi_ca_version[12];
228SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
229 acpi_ca_version, 0, "Version of Intel ACPI-CA");
230
231/*
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232 * Allow override of whether methods execute in parallel or not.
233 * Enable this for serial behavior, which fixes "AE_ALREADY_EXISTS"
234 * errors for AML that really can't handle parallel method execution.
235 * It is off by default since this breaks recursive methods and
236 * some IBMs use such code.
237 */
238static int acpi_serialize_methods;
239TUNABLE_INT("hw.acpi.serialize_methods", &acpi_serialize_methods);
240
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241/* Power devices off and on in suspend and resume. XXX Remove once tested. */
242static int acpi_do_powerstate = 1;
243TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
244SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
245 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
246
247/* Allow users to override quirks. */
248TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
249
250static int acpi_susp_bounce;
251SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
252 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
253
f9d8cd12 254/*
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MD
255 * ACPI can only be loaded as a module by the loader; activating it after
256 * system bootstrap time is not useful, and can be fatal to the system.
257 * It also cannot be unloaded, since the entire system bus heirarchy hangs
258 * off it.
259 */
260static int
261acpi_modevent(struct module *mod, int event, void *junk)
262{
10f97674 263 switch (event) {
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264 case MOD_LOAD:
265 if (!cold) {
e3869ec7 266 kprintf("The ACPI driver cannot be loaded after boot.\n");
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267 return (EPERM);
268 }
269 break;
270 case MOD_UNLOAD:
271 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
272 return (EBUSY);
273 break;
274 default:
275 break;
276 }
277 return (0);
278}
279
280/*
281 * Perform early initialization.
282 */
283ACPI_STATUS
284acpi_Startup(void)
285{
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286 static int started = 0;
287 ACPI_STATUS status;
288 int val;
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289
290 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
291
10f97674 292 /* Only run the startup code once. The MADT driver also calls this. */
5ed44076 293 if (started)
10f97674 294 return_VALUE (AE_OK);
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295 started = 1;
296
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AP
297 /*
298 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
299 * if more tables exist.
300 */
301 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
302 kprintf("ACPI: Table initialisation failed: %s\n",
303 AcpiFormatException(status));
304 return_VALUE (status);
5ed44076 305 }
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306
307 /* Set up any quirks we have for this system. */
308#ifdef notyet
309 if (acpi_quirks == ACPI_Q_OK)
310 acpi_table_quirks(&acpi_quirks);
5ed44076 311#endif
f9d8cd12 312
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AP
313 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
314 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
315 acpi_quirks &= ~ACPI_Q_BROKEN;
316 if (acpi_quirks & ACPI_Q_BROKEN) {
317 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
318 status = AE_SUPPORT;
319 }
f9d8cd12 320
10f97674 321 return_VALUE (status);
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MD
322}
323
324/*
325 * Detect ACPI, perform early initialisation
326 */
10f97674 327static void
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328acpi_identify(driver_t *driver, device_t parent)
329{
330 device_t child;
331
332 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
333
334 if (!cold)
10f97674 335 return_VOID;
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MD
336
337 /* Check that we haven't been disabled with a hint. */
338 if (resource_disabled("acpi", 0))
10f97674 339 return_VOID;
5ed44076 340
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MD
341 /* Make sure we're not being doubly invoked. */
342 if (device_find_child(parent, "acpi", 0) != NULL)
10f97674 343 return_VOID;
5ed44076 344
10f97674 345 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
5ed44076 346
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AP
347 /* Initialize root tables. */
348 if (ACPI_FAILURE(acpi_Startup())) {
349 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
350 return_VOID;
351 }
f9d8cd12 352
5ed44076 353 /* Attach the actual ACPI device. */
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354 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) {
355 device_printf(parent, "device_identify failed\n");
356 return_VOID;
5ed44076 357 }
e1eeedd0
YT
358}
359
360/*
10f97674 361 * Fetch some descriptive data from ACPI to put in our attach message.
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MD
362 */
363static int
364acpi_probe(device_t dev)
365{
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366 ACPI_TABLE_RSDP *rsdp;
367 ACPI_TABLE_HEADER *rsdt;
368 ACPI_PHYSICAL_ADDRESS paddr;
369 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
5ed44076 370 struct sbuf sb;
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371
372 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
373
374 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
375 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
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376 device_printf(dev, "probe failed, other PM system enabled.\n");
377 return_VALUE (ENXIO);
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378 }
379
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380 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
381 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
382 return_VALUE (ENXIO);
383 if (rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
384 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
385 else
386 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
387 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
e1eeedd0 388
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389 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
390 return_VALUE (ENXIO);
e1eeedd0 391 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
10f97674 392 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
e1eeedd0
YT
393 sbuf_trim(&sb);
394 sbuf_putc(&sb, ' ');
10f97674 395 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
e1eeedd0
YT
396 sbuf_trim(&sb);
397 sbuf_finish(&sb);
398 device_set_desc_copy(dev, sbuf_data(&sb));
399 sbuf_delete(&sb);
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400 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
401
402 return_VALUE (0);
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403}
404
405static int
406acpi_attach(device_t dev)
407{
408 struct acpi_softc *sc;
10f97674 409 ACPI_TABLE_FACS *facs;
5ed44076 410 ACPI_STATUS status;
f9d8cd12 411 int error, state;
5ed44076 412 UINT32 flags;
f9d8cd12 413 UINT8 TypeA, TypeB;
5ed44076 414 char *env;
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MD
415
416 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
e1eeedd0 417
5ed44076 418 sc = device_get_softc(dev);
5ed44076 419 sc->acpi_dev = dev;
10f97674 420 callout_init(&sc->susp_force_to);
5ed44076 421
c877f0f6 422 if ((error = acpi_task_thread_init())) {
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AP
423 device_printf(dev, "Could not start task thread.\n");
424 goto out;
c877f0f6
YT
425 }
426
e1eeedd0 427 error = ENXIO;
e1eeedd0 428
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429 /* Initialize resource manager. */
430 acpi_rman_io.rm_type = RMAN_ARRAY;
431 acpi_rman_io.rm_start = 0;
432 acpi_rman_io.rm_end = 0xffff;
10f97674 433 acpi_rman_io.rm_descr = "ACPI I/O ports";
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434 if (rman_init(&acpi_rman_io) != 0)
435 panic("acpi rman_init IO ports failed");
436 acpi_rman_mem.rm_type = RMAN_ARRAY;
437 acpi_rman_mem.rm_start = 0;
438 acpi_rman_mem.rm_end = ~0ul;
10f97674 439 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
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YT
440 if (rman_init(&acpi_rman_mem) != 0)
441 panic("acpi rman_init memory failed");
442
10f97674 443 /* Initialise the ACPI mutex */
5c7ffd75
AP
444 ACPI_LOCK_INIT(acpi, "acpi");
445 ACPI_SERIAL_INIT(acpi);
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446
447 /*
448 * Set the globals from our tunables. This is needed because ACPI-CA
449 * uses UINT8 for some values and we have no tunable_byte.
450 */
451 AcpiGbl_AllMethodsSerialized = acpi_serialize_methods;
452 AcpiGbl_EnableInterpreterSlack = TRUE;
453
454 /* Start up the ACPI CA subsystem. */
455 status = AcpiInitializeSubsystem();
456 if (ACPI_FAILURE(status)) {
457 device_printf(dev, "Could not initialize Subsystem: %s\n",
458 AcpiFormatException(status));
459 goto out;
460 }
461
462 /* Load ACPI name space. */
463 status = AcpiLoadTables();
464 if (ACPI_FAILURE(status)) {
465 device_printf(dev, "Could not load Namespace: %s\n",
466 AcpiFormatException(status));
467 goto out;
468 }
469
4ea06a72
AP
470 /* Handle MCFG table if present. */
471 acpi_enable_pcie();
472
5ed44076 473 /* Install the default address space handlers. */
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MD
474 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
475 ACPI_ADR_SPACE_SYSTEM_MEMORY, ACPI_DEFAULT_HANDLER, NULL, NULL);
476 if (ACPI_FAILURE(status)) {
477 device_printf(dev, "Could not initialise SystemMemory handler: %s\n",
478 AcpiFormatException(status));
479 goto out;
480 }
481 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
482 ACPI_ADR_SPACE_SYSTEM_IO, ACPI_DEFAULT_HANDLER, NULL, NULL);
483 if (ACPI_FAILURE(status)) {
484 device_printf(dev, "Could not initialise SystemIO handler: %s\n",
485 AcpiFormatException(status));
486 goto out;
487 }
488 status = AcpiInstallAddressSpaceHandler(ACPI_ROOT_OBJECT,
489 ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
490 if (ACPI_FAILURE(status)) {
491 device_printf(dev, "could not initialise PciConfig handler: %s\n",
492 AcpiFormatException(status));
493 goto out;
494 }
495
496 /*
5ed44076
MD
497 * Note that some systems (specifically, those with namespace evaluation
498 * issues that require the avoidance of parts of the namespace) must
499 * avoid running _INI and _STA on everything, as well as dodging the final
500 * object init pass.
501 *
502 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
503 *
504 * XXX We should arrange for the object init pass after we have attached
505 * all our child devices, but on many systems it works here.
506 */
5ed44076 507 flags = 0;
728aa6ee 508 if (ktestenv("debug.acpi.avoid"))
5ed44076 509 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
10f97674
AP
510
511 /* Bring the hardware and basic handlers online. */
5ed44076
MD
512 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
513 device_printf(dev, "Could not enable ACPI: %s\n",
514 AcpiFormatException(status));
515 goto out;
516 }
517
518 /*
519 * Call the ECDT probe function to provide EC functionality before
520 * the namespace has been evaluated.
10f97674
AP
521 *
522 * XXX This happens before the sysresource devices have been probed and
523 * attached so its resources come from nexus0. In practice, this isn't
524 * a problem but should be addressed eventually.
5ed44076
MD
525 */
526 acpi_ec_ecdt_probe(dev);
527
10f97674 528 /* Bring device objects and regions online. */
5ed44076
MD
529 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
530 device_printf(dev, "Could not initialize ACPI objects: %s\n",
531 AcpiFormatException(status));
532 goto out;
533 }
534
535 /*
536 * Setup our sysctl tree.
537 *
538 * XXX: This doesn't check to make sure that none of these fail.
539 */
540 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
541 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
542 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
543 device_get_name(dev), CTLFLAG_RD, 0, "");
544 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
545 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
546 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
547 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
548 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
549 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
550 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
551 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
552 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
553 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
554 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
555 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
556 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
557 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
558 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
559 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
560 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
561 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
562 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674
AP
563 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
564 "sleep delay");
5ed44076 565 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674 566 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
5ed44076 567 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674 568 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
5ed44076 569 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
10f97674
AP
570 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
571 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
572 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
573 OID_AUTO, "handle_reboot", CTLFLAG_RW,
574 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
5ed44076
MD
575
576 /*
49e48b8a 577 * Default to 1 second before sleeping to give some machines time to
5ed44076
MD
578 * stabilize.
579 */
49e48b8a 580 sc->acpi_sleep_delay = 1;
5ed44076
MD
581 if (bootverbose)
582 sc->acpi_verbose = 1;
10f97674
AP
583 if ((env = kgetenv("hw.acpi.verbose")) != NULL) {
584 if (strcmp(env, "0") != 0)
585 sc->acpi_verbose = 1;
728aa6ee 586 kfreeenv(env);
5ed44076
MD
587 }
588
589 /* Only enable S4BIOS by default if the FACS says it is available. */
10f97674
AP
590 status = AcpiGetTable(ACPI_SIG_FACS, 0, (ACPI_TABLE_HEADER **)&facs);
591 if (ACPI_FAILURE(status)) {
592 device_printf(dev, "couldn't get FACS: %s\n",
593 AcpiFormatException(status));
594 error = ENXIO;
595 goto out;
e1eeedd0 596 }
10f97674
AP
597 if (facs->Flags & ACPI_FACS_S4_BIOS_PRESENT)
598 sc->acpi_s4bios = 1;
5ed44076
MD
599
600 /*
f9d8cd12
MD
601 * Dispatch the default sleep state to devices. The lid switch is set
602 * to NONE by default to avoid surprising users.
5ed44076 603 */
f9d8cd12
MD
604 sc->acpi_power_button_sx = ACPI_STATE_S5;
605 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
5ed44076
MD
606 sc->acpi_standby_sx = ACPI_STATE_S1;
607 sc->acpi_suspend_sx = ACPI_STATE_S3;
608
f9d8cd12
MD
609 /* Pick the first valid sleep state for the sleep button default. */
610 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
10f97674 611 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
f9d8cd12
MD
612 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
613 sc->acpi_sleep_button_sx = state;
614 break;
615 }
616
5ed44076
MD
617 acpi_enable_fixed_events(sc);
618
619 /*
620 * Scan the namespace and attach/initialise children.
621 */
5ed44076 622
10f97674 623 /* Register our shutdown handler. */
5ed44076
MD
624 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
625 SHUTDOWN_PRI_LAST);
626
627 /*
628 * Register our acpi event handlers.
629 * XXX should be configurable eg. via userland policy manager.
630 */
631 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
632 sc, ACPI_EVENT_PRI_LAST);
633 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
634 sc, ACPI_EVENT_PRI_LAST);
635
636 /* Flag our initial states. */
637 sc->acpi_enabled = 1;
638 sc->acpi_sstate = ACPI_STATE_S0;
639 sc->acpi_sleep_disabled = 0;
5ed44076 640 /* Create the control device */
fef8985e 641 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644,
5ed44076
MD
642 "acpi");
643 sc->acpi_dev_t->si_drv1 = sc;
644
5ed44076
MD
645 if ((error = acpi_machdep_init(dev)))
646 goto out;
647
648 /* Register ACPI again to pass the correct argument of pm_func. */
649 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
650
651 if (!acpi_disabled("bus"))
652 acpi_probe_children(dev);
653
457bd2b6
MA
654 /* Update all GPEs and enable runtime GPEs. */
655 status = AcpiUpdateAllGpes();
4efc8147
SZ
656 if (ACPI_FAILURE(status)) {
657 device_printf(dev, "Could not update all GPEs: %s\n",
658 AcpiFormatException(status));
659 }
457bd2b6
MA
660
661 /* Allow sleep request after a while. */
662 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
663
5ed44076
MD
664 error = 0;
665
666 out:
ef612539 667 cputimer_intr_pmfixup();
5ed44076
MD
668 return_VALUE (error);
669}
670
49e48b8a 671static int
10f97674 672acpi_suspend(device_t dev)
49e48b8a 673{
10f97674
AP
674 device_t child, *devlist;
675 int error, i, numdevs, pstate;
49e48b8a 676
10f97674
AP
677 GIANT_REQUIRED;
678
679 /* First give child devices a chance to suspend. */
680 error = bus_generic_suspend(dev);
681 if (error)
682 return (error);
683
684 /*
685 * Now, set them into the appropriate power state, usually D3. If the
686 * device has an _SxD method for the next sleep state, use that power
687 * state instead.
688 */
689 device_get_children(dev, &devlist, &numdevs);
690 for (i = 0; i < numdevs; i++) {
691 /* If the device is not attached, we've powered it down elsewhere. */
692 child = devlist[i];
693 if (!device_is_attached(child))
694 continue;
695
696 /*
697 * Default to D3 for all sleep states. The _SxD method is optional
698 * so set the powerstate even if it's absent.
699 */
700 pstate = PCI_POWERSTATE_D3;
701 error = acpi_device_pwr_for_sleep(device_get_parent(child),
702 child, &pstate);
703 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
704 pci_set_powerstate(child, pstate);
705 }
706 kfree(devlist, M_TEMP);
707 error = 0;
708
709 return (error);
49e48b8a
MD
710}
711
10f97674
AP
712static int
713acpi_resume(device_t dev)
f9d8cd12 714{
10f97674
AP
715 ACPI_HANDLE handle;
716 int i, numdevs;
717 device_t child, *devlist;
718
719 GIANT_REQUIRED;
f9d8cd12
MD
720
721 /*
10f97674
AP
722 * Put all devices in D0 before resuming them. Call _S0D on each one
723 * since some systems expect this.
f9d8cd12 724 */
10f97674
AP
725 device_get_children(dev, &devlist, &numdevs);
726 for (i = 0; i < numdevs; i++) {
727 child = devlist[i];
728 handle = acpi_get_handle(child);
729 if (handle)
730 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
731 if (device_is_attached(child) && acpi_do_powerstate)
732 pci_set_powerstate(child, PCI_POWERSTATE_D0);
f9d8cd12 733 }
10f97674
AP
734 kfree(devlist, M_TEMP);
735
736 return (bus_generic_resume(dev));
737}
738
739static int
740acpi_shutdown(device_t dev)
741{
742
743 GIANT_REQUIRED;
744
745 /* Allow children to shutdown first. */
746 bus_generic_shutdown(dev);
f9d8cd12
MD
747
748 /*
10f97674
AP
749 * Enable any GPEs that are able to power-on the system (i.e., RTC).
750 * Also, disable any that are not valid for this state (most).
f9d8cd12 751 */
10f97674 752 acpi_wake_prep_walk(ACPI_STATE_S5);
f9d8cd12 753
10f97674 754 return (0);
f9d8cd12
MD
755}
756
5ed44076
MD
757/*
758 * Handle a new device being added
759 */
760static device_t
10f97674 761acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
5ed44076
MD
762{
763 struct acpi_device *ad;
764 device_t child;
765
10f97674
AP
766 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
767 return (NULL);
5ed44076
MD
768
769 resource_list_init(&ad->ad_rl);
2581072f 770 child = device_add_child_ordered(parent, order, name, unit);
5ed44076
MD
771 if (child != NULL)
772 device_set_ivars(child, ad);
10f97674
AP
773 else
774 kfree(ad, M_ACPIDEV);
5ed44076
MD
775 return (child);
776}
777
778static int
779acpi_print_child(device_t bus, device_t child)
780{
781 struct acpi_device *adev = device_get_ivars(child);
782 struct resource_list *rl = &adev->ad_rl;
783 int retval = 0;
784
785 retval += bus_print_child_header(bus, child);
786 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
787 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
788 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
789 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
10f97674
AP
790 if (device_get_flags(child))
791 retval += kprintf(" flags %#x", device_get_flags(child));
5ed44076
MD
792 retval += bus_print_child_footer(bus, child);
793
794 return (retval);
795}
796
10f97674
AP
797/*
798 * If this device is an ACPI child but no one claimed it, attempt
799 * to power it off. We'll power it back up when a driver is added.
800 *
801 * XXX Disabled for now since many necessary devices (like fdc and
802 * ATA) don't claim the devices we created for them but still expect
803 * them to be powered up.
804 */
805static void
806acpi_probe_nomatch(device_t bus, device_t child)
807{
808
809 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
810}
811
812/*
813 * If a new driver has a chance to probe a child, first power it up.
814 *
815 * XXX Disabled for now (see acpi_probe_nomatch for details).
816 */
817static void
818acpi_driver_added(device_t dev, driver_t *driver)
819{
820 device_t child, *devlist;
821 int i, numdevs;
822
823 DEVICE_IDENTIFY(driver, dev);
824 device_get_children(dev, &devlist, &numdevs);
825 for (i = 0; i < numdevs; i++) {
826 child = devlist[i];
827 if (device_get_state(child) == DS_NOTPRESENT) {
828 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
829 if (device_probe_and_attach(child) != 0)
830 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
831 }
832 }
833 kfree(devlist, M_TEMP);
834}
835
f9d8cd12
MD
836/* Location hint for devctl(8) */
837static int
838acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
839 size_t buflen)
840{
841 struct acpi_device *dinfo = device_get_ivars(child);
842
843 if (dinfo->ad_handle)
10f97674 844 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
f9d8cd12 845 else
10f97674 846 ksnprintf(buf, buflen, "unknown");
f9d8cd12
MD
847 return (0);
848}
849
850/* PnP information for devctl(8) */
851static int
852acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
853 size_t buflen)
854{
f9d8cd12
MD
855 ACPI_DEVICE_INFO *adinfo;
856 struct acpi_device *dinfo = device_get_ivars(child);
857 char *end;
858 int error;
859
29bac728 860 error = AcpiGetObjectInfo(dinfo->ad_handle, &adinfo);
4efc8147 861 if (error) {
10f97674 862 ksnprintf(buf, buflen, "unknown");
4efc8147 863 } else {
f8c7a42d 864 ksnprintf(buf, buflen, "_HID=%s _UID=%lu",
10f97674 865 (adinfo->Valid & ACPI_VALID_HID) ?
29bac728 866 adinfo->HardwareId.String : "none",
10f97674 867 (adinfo->Valid & ACPI_VALID_UID) ?
29bac728 868 strtoul(adinfo->UniqueId.String, &end, 10) : 0);
4efc8147
SZ
869 if (adinfo)
870 AcpiOsFree(adinfo);
29bac728 871 }
f9d8cd12
MD
872 return (0);
873}
5ed44076
MD
874
875/*
876 * Handle per-device ivars
877 */
878static int
879acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
880{
881 struct acpi_device *ad;
882
883 if ((ad = device_get_ivars(child)) == NULL) {
e3869ec7 884 kprintf("device has no ivars\n");
5ed44076
MD
885 return (ENOENT);
886 }
887
888 /* ACPI and ISA compatibility ivars */
889 switch(index) {
890 case ACPI_IVAR_HANDLE:
891 *(ACPI_HANDLE *)result = ad->ad_handle;
892 break;
893 case ACPI_IVAR_MAGIC:
10f97674 894 *(uintptr_t *)result = ad->ad_magic;
5ed44076
MD
895 break;
896 case ACPI_IVAR_PRIVATE:
897 *(void **)result = ad->ad_private;
898 break;
10f97674
AP
899 case ACPI_IVAR_FLAGS:
900 *(int *)result = ad->ad_flags;
901 break;
5ed44076
MD
902 case ISA_IVAR_VENDORID:
903 case ISA_IVAR_SERIAL:
904 case ISA_IVAR_COMPATID:
905 *(int *)result = -1;
906 break;
907 case ISA_IVAR_LOGICALID:
908 *(int *)result = acpi_isa_get_logicalid(child);
909 break;
910 default:
911 return (ENOENT);
912 }
913
914 return (0);
915}
916
917static int
918acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
919{
920 struct acpi_device *ad;
921
922 if ((ad = device_get_ivars(child)) == NULL) {
e3869ec7 923 kprintf("device has no ivars\n");
5ed44076
MD
924 return (ENOENT);
925 }
926
927 switch(index) {
928 case ACPI_IVAR_HANDLE:
929 ad->ad_handle = (ACPI_HANDLE)value;
930 break;
931 case ACPI_IVAR_MAGIC:
10f97674 932 ad->ad_magic = (uintptr_t)value;
5ed44076
MD
933 break;
934 case ACPI_IVAR_PRIVATE:
935 ad->ad_private = (void *)value;
936 break;
10f97674
AP
937 case ACPI_IVAR_FLAGS:
938 ad->ad_flags = (int)value;
939 break;
5ed44076
MD
940 default:
941 panic("bad ivar write request (%d)", index);
942 return (ENOENT);
943 }
944
945 return (0);
946}
947
5ed44076
MD
948/*
949 * Handle child resource allocation/removal
950 */
c8b4f0e6
YT
951static struct resource_list *
952acpi_get_rlist(device_t dev, device_t child)
5ed44076 953{
c8b4f0e6 954 struct acpi_device *ad;
5ed44076 955
c8b4f0e6
YT
956 ad = device_get_ivars(child);
957 return (&ad->ad_rl);
5ed44076
MD
958}
959
10f97674
AP
960/*
961 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
962 * duplicates, we merge any in the sysresource attach routine.
963 */
964static int
965acpi_sysres_alloc(device_t dev)
966{
967 struct resource *res;
968 struct resource_list *rl;
969 struct resource_list_entry *rle;
970 struct rman *rm;
971 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
972 device_t *children;
973 int child_count, i;
974 /*
975 * Probe/attach any sysresource devices. This would be unnecessary if we
976 * had multi-pass probe/attach.
977 */
978 if (device_get_children(dev, &children, &child_count) != 0)
979 return (ENXIO);
980 for (i = 0; i < child_count; i++) {
981 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
982 device_probe_and_attach(children[i]);
983 }
984 kfree(children, M_TEMP);
985
986 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
987 if(!rl)
988 return 0;
989 SLIST_FOREACH(rle, rl, link) {
990 if (rle->res != NULL) {
991 device_printf(dev, "duplicate resource for %lx\n", rle->start);
992 continue;
993 }
994
995 /* Only memory and IO resources are valid here. */
996 switch (rle->type) {
997 case SYS_RES_IOPORT:
998 rm = &acpi_rman_io;
999 break;
1000 case SYS_RES_MEMORY:
1001 rm = &acpi_rman_mem;
1002 break;
1003 default:
1004 continue;
1005 }
1006
1007 /* Pre-allocate resource and add to our rman pool. */
1008 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1009 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count, 0);
1010 if (res != NULL) {
1011 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1012 rle->res = res;
1013 } else
1014 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1015 rle->start, rle->count, rle->type);
1016 }
1017 return (0);
1018}
1019
5ed44076
MD
1020static struct resource *
1021acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
c8b4f0e6 1022 u_long start, u_long end, u_long count, u_int flags)
5ed44076 1023{
10f97674 1024 ACPI_RESOURCE ares;
5ed44076
MD
1025 struct acpi_device *ad = device_get_ivars(child);
1026 struct resource_list *rl = &ad->ad_rl;
c8b4f0e6
YT
1027 struct resource_list_entry *rle;
1028 struct resource *res;
1029 struct rman *rm;
10f97674
AP
1030
1031 res = NULL;
1032
1033 /* We only handle memory and IO resources through rman. */
1034 switch (type) {
1035 case SYS_RES_IOPORT:
1036 rm = &acpi_rman_io;
1037 break;
1038 case SYS_RES_MEMORY:
1039 rm = &acpi_rman_mem;
1040 break;
1041 default:
1042 rm = NULL;
1043 }
1044
1045 ACPI_SERIAL_BEGIN(acpi);
c8b4f0e6
YT
1046
1047 /*
1048 * If this is an allocation of the "default" range for a given RID, and
1049 * we know what the resources for this device are (i.e., they're on the
1050 * child's resource list), use those start/end values.
1051 */
10f97674 1052 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
c8b4f0e6
YT
1053 rle = resource_list_find(rl, type, *rid);
1054 if (rle == NULL)
10f97674 1055 goto out;
c8b4f0e6
YT
1056 start = rle->start;
1057 end = rle->end;
1058 count = rle->count;
1059 }
1060
10f97674
AP
1061 /*
1062 * If this is an allocation of a specific range, see if we can satisfy
1063 * the request from our system resource regions. If we can't, pass the
1064 * request up to the parent.
1065 */
1066 if (start + count - 1 == end && rm != NULL)
1067 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1068 child);
1069 if (res == NULL) {
1070 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1071 start, end, count, flags);
1072 } else {
1073 rman_set_rid(res, *rid);
5ed44076 1074
10f97674
AP
1075 /* If requested, activate the resource using the parent's method. */
1076 if (flags & RF_ACTIVE)
1077 if (bus_activate_resource(child, type, *rid, res) != 0) {
1078 rman_release_resource(res);
1079 res = NULL;
1080 goto out;
1081 }
c8b4f0e6
YT
1082 }
1083
10f97674
AP
1084 if (res != NULL && device_get_parent(child) == bus)
1085 switch (type) {
1086 case SYS_RES_IRQ:
1087 /*
1088 * Since bus_config_intr() takes immediate effect, we cannot
1089 * configure the interrupt associated with a device when we
1090 * parse the resources but have to defer it until a driver
1091 * actually allocates the interrupt via bus_alloc_resource().
1092 *
1093 * XXX: Should we handle the lookup failing?
1094 */
10f97674
AP
1095 if (ACPI_SUCCESS(acpi_lookup_irq_resource(child, *rid, res, &ares)))
1096 acpi_config_intr(child, &ares);
1097 else
1098 kprintf("irq resource not found\n");
1099 break;
c8b4f0e6
YT
1100 }
1101
10f97674
AP
1102out:
1103 ACPI_SERIAL_END(acpi);
c8b4f0e6 1104 return (res);
5ed44076
MD
1105}
1106
1107static int
c8b4f0e6
YT
1108acpi_release_resource(device_t bus, device_t child, int type, int rid,
1109 struct resource *r)
5ed44076 1110{
10f97674 1111 struct rman *rm;
c8b4f0e6
YT
1112 int ret;
1113
10f97674
AP
1114 /* We only handle memory and IO resources through rman. */
1115 switch (type) {
1116 case SYS_RES_IOPORT:
1117 rm = &acpi_rman_io;
1118 break;
1119 case SYS_RES_MEMORY:
1120 rm = &acpi_rman_mem;
1121 break;
1122 default:
1123 rm = NULL;
1124 }
1125
1126 ACPI_SERIAL_BEGIN(acpi);
1127
c8b4f0e6 1128 /*
10f97674
AP
1129 * If this resource belongs to one of our internal managers,
1130 * deactivate it and release it to the local pool. If it doesn't,
1131 * pass this request up to the parent.
c8b4f0e6 1132 */
10f97674 1133 if (rm != NULL && rman_is_region_manager(r, rm)) {
c8b4f0e6
YT
1134 if (rman_get_flags(r) & RF_ACTIVE) {
1135 ret = bus_deactivate_resource(child, type, rid, r);
1136 if (ret != 0)
10f97674 1137 goto out;
c8b4f0e6
YT
1138 }
1139 ret = rman_release_resource(r);
1140 } else
1141 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
5ed44076 1142
10f97674
AP
1143out:
1144 ACPI_SERIAL_END(acpi);
c8b4f0e6 1145 return (ret);
5ed44076
MD
1146}
1147
10f97674
AP
1148static void
1149acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1150{
1151 struct resource_list *rl;
1152
1153 rl = acpi_get_rlist(bus, child);
1154 resource_list_delete(rl, type, rid);
1155}
1156
5ed44076 1157/* Allocate an IO port or memory resource, given its GAS. */
10f97674
AP
1158int
1159acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1160 struct resource **res, u_int flags)
5ed44076 1161{
10f97674 1162 int error, res_type;
5ed44076 1163
10f97674
AP
1164 error = ENOMEM;
1165 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1166 return (EINVAL);
5ed44076 1167
10f97674 1168 /* We only support memory and IO spaces. */
e1eeedd0 1169 switch (gas->SpaceId) {
5ed44076 1170 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
10f97674 1171 res_type = SYS_RES_MEMORY;
5ed44076
MD
1172 break;
1173 case ACPI_ADR_SPACE_SYSTEM_IO:
10f97674 1174 res_type = SYS_RES_IOPORT;
5ed44076
MD
1175 break;
1176 default:
10f97674 1177 return (EOPNOTSUPP);
5ed44076
MD
1178 }
1179
10f97674
AP
1180 /*
1181 * If the register width is less than 8, assume the BIOS author means
1182 * it is a bit field and just allocate a byte.
1183 */
1184 if (gas->BitWidth && gas->BitWidth < 8)
1185 gas->BitWidth = 8;
5ed44076 1186
10f97674
AP
1187 /* Validate the address after we're sure we support the space. */
1188 if (gas->Address == 0 || gas->BitWidth == 0)
1189 return (EINVAL);
1190
1191 bus_set_resource(dev, res_type, *rid, gas->Address,
1192 gas->BitWidth / 8);
1193 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1194 if (*res != NULL) {
1195 *type = res_type;
1196 error = 0;
1197 } else
1198 bus_delete_resource(dev, res_type, *rid);
5ed44076 1199
10f97674
AP
1200 return (error);
1201}
1202
1203/* Probe _HID and _CID for compatible ISA PNP ids. */
5ed44076
MD
1204static uint32_t
1205acpi_isa_get_logicalid(device_t dev)
1206{
1207 ACPI_DEVICE_INFO *devinfo;
5ed44076
MD
1208 ACPI_HANDLE h;
1209 ACPI_STATUS error;
1210 u_int32_t pnpid;
5ed44076
MD
1211
1212 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1213
1214 pnpid = 0;
5ed44076 1215
5ed44076
MD
1216 /* Fetch and validate the HID. */
1217 if ((h = acpi_get_handle(dev)) == NULL)
1218 goto out;
29bac728 1219 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076
MD
1220 if (ACPI_FAILURE(error))
1221 goto out;
5ed44076
MD
1222
1223 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
29bac728 1224 pnpid = PNP_EISAID(devinfo->HardwareId.String);
5ed44076
MD
1225
1226out:
29bac728 1227 if (devinfo)
4efc8147 1228 AcpiOsFree(devinfo);
5ed44076
MD
1229 return_VALUE (pnpid);
1230}
1231
1232static int
1233acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1234{
1235 ACPI_DEVICE_INFO *devinfo;
5ed44076
MD
1236 ACPI_HANDLE h;
1237 ACPI_STATUS error;
1238 uint32_t *pnpid;
1239 int valid, i;
5ed44076
MD
1240
1241 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1242
1243 pnpid = cids;
1244 valid = 0;
5ed44076 1245
5ed44076
MD
1246 /* Fetch and validate the CID */
1247 if ((h = acpi_get_handle(dev)) == NULL)
1248 goto out;
29bac728 1249 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076
MD
1250 if (ACPI_FAILURE(error))
1251 goto out;
5ed44076
MD
1252 if ((devinfo->Valid & ACPI_VALID_CID) == 0)
1253 goto out;
1254
29bac728
MA
1255 if (devinfo->CompatibleIdList.Count < count)
1256 count = devinfo->CompatibleIdList.Count;
5ed44076 1257 for (i = 0; i < count; i++) {
29bac728 1258 if (strncmp(devinfo->CompatibleIdList.Ids[i].String, "PNP", 3) != 0)
5ed44076 1259 continue;
29bac728 1260 *pnpid++ = PNP_EISAID(devinfo->CompatibleIdList.Ids[i].String);
5ed44076
MD
1261 valid++;
1262 }
1263
1264out:
29bac728
MA
1265 if (devinfo)
1266 AcpiOsFree(devinfo);
5ed44076
MD
1267 return_VALUE (valid);
1268}
1269
676159d4
HT
1270static char *
1271acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1272{
1273 ACPI_HANDLE h;
1274 int i;
1275
1276 h = acpi_get_handle(dev);
1277 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1278 return (NULL);
1279
1280 /* Try to match one of the array of IDs with a HID or CID. */
1281 for (i = 0; ids[i] != NULL; i++) {
1282 if (acpi_MatchHid(h, ids[i]))
1283 return (ids[i]);
1284 }
1285 return (NULL);
1286}
1287
10f97674
AP
1288static ACPI_STATUS
1289acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1290 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1291{
1292 ACPI_HANDLE h;
1293
1294 if (dev == NULL)
1295 h = ACPI_ROOT_OBJECT;
1296 else if ((h = acpi_get_handle(dev)) == NULL)
1297 return (AE_BAD_PARAMETER);
1298 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1299}
1300
1301static int
1302acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1303{
1304 struct acpi_softc *sc;
1305 ACPI_HANDLE handle;
1306 ACPI_STATUS status;
1307 char sxd[8];
1308 int error;
1309
1310 sc = device_get_softc(bus);
1311 handle = acpi_get_handle(dev);
1312
1313 /*
1314 * XXX If we find these devices, don't try to power them down.
1315 * The serial and IRDA ports on my T23 hang the system when
1316 * set to D3 and it appears that such legacy devices may
1317 * need special handling in their drivers.
1318 */
1319 if (handle == NULL ||
1320 acpi_MatchHid(handle, "PNP0500") ||
1321 acpi_MatchHid(handle, "PNP0501") ||
1322 acpi_MatchHid(handle, "PNP0502") ||
1323 acpi_MatchHid(handle, "PNP0510") ||
1324 acpi_MatchHid(handle, "PNP0511"))
1325 return (ENXIO);
1326
1327 /*
1328 * Override next state with the value from _SxD, if present. If no
1329 * dstate argument was provided, don't fetch the return value.
1330 */
1331 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1332 if (dstate)
1333 status = acpi_GetInteger(handle, sxd, dstate);
1334 else
1335 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1336
1337 switch (status) {
1338 case AE_OK:
1339 error = 0;
1340 break;
1341 case AE_NOT_FOUND:
1342 error = ESRCH;
1343 break;
1344 default:
1345 error = ENXIO;
1346 break;
1347 }
1348
1349 return (error);
1350}
1351
1352/* Callback arg for our implementation of walking the namespace. */
1353struct acpi_device_scan_ctx {
1354 acpi_scan_cb_t user_fn;
1355 void *arg;
1356 ACPI_HANDLE parent;
1357};
1358
1359static ACPI_STATUS
1360acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1361{
1362 struct acpi_device_scan_ctx *ctx;
1363 device_t dev, old_dev;
1364 ACPI_STATUS status;
1365 ACPI_OBJECT_TYPE type;
1366
1367 /*
1368 * Skip this device if we think we'll have trouble with it or it is
1369 * the parent where the scan began.
1370 */
1371 ctx = (struct acpi_device_scan_ctx *)arg;
1372 if (acpi_avoid(h) || h == ctx->parent)
1373 return (AE_OK);
1374
1375 /* If this is not a valid device type (e.g., a method), skip it. */
1376 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1377 return (AE_OK);
1378 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1379 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1380 return (AE_OK);
1381
1382 /*
1383 * Call the user function with the current device. If it is unchanged
1384 * afterwards, return. Otherwise, we update the handle to the new dev.
1385 */
1386 old_dev = acpi_get_device(h);
1387 dev = old_dev;
1388 status = ctx->user_fn(h, &dev, level, ctx->arg);
1389 if (ACPI_FAILURE(status) || old_dev == dev)
1390 return (status);
1391
1392 /* Remove the old child and its connection to the handle. */
1393 if (old_dev != NULL) {
1394 device_delete_child(device_get_parent(old_dev), old_dev);
1395 AcpiDetachData(h, acpi_fake_objhandler);
1396 }
1397
1398 /* Recreate the handle association if the user created a device. */
1399 if (dev != NULL)
1400 AcpiAttachData(h, acpi_fake_objhandler, dev);
1401
1402 return (AE_OK);
1403}
1404
1405static ACPI_STATUS
1406acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1407 acpi_scan_cb_t user_fn, void *arg)
1408{
1409 ACPI_HANDLE h;
1410 struct acpi_device_scan_ctx ctx;
1411
1412 if (acpi_disabled("children"))
1413 return (AE_OK);
1414
1415 if (dev == NULL)
1416 h = ACPI_ROOT_OBJECT;
1417 else if ((h = acpi_get_handle(dev)) == NULL)
1418 return (AE_BAD_PARAMETER);
1419 ctx.user_fn = user_fn;
1420 ctx.arg = arg;
1421 ctx.parent = h;
b3af5338
SZ
1422 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1423 acpi_device_scan_cb, NULL, &ctx, NULL));
10f97674
AP
1424}
1425
1426/*
1427 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1428 * device power states since it's close enough to ACPI.
1429 */
1430static int
1431acpi_set_powerstate_method(device_t bus, device_t child, int state)
1432{
1433 ACPI_HANDLE h;
1434 ACPI_STATUS status;
1435 int error;
1436
1437 error = 0;
1438 h = acpi_get_handle(child);
1439 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1440 return (EINVAL);
1441 if (h == NULL)
1442 return (0);
1443
1444 /* Ignore errors if the power methods aren't present. */
1445 status = acpi_pwr_switch_consumer(h, state);
1446 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1447 && status != AE_BAD_PARAMETER)
1448 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1449 state, acpi_name(h), AcpiFormatException(status));
1450
1451 return (error);
1452}
1453
5ed44076
MD
1454static int
1455acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1456{
1457 int result, cid_count, i;
1458 uint32_t lid, cids[8];
1459
1460 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1461
1462 /*
1463 * ISA-style drivers attached to ACPI may persist and
1464 * probe manually if we return ENOENT. We never want
1465 * that to happen, so don't ever return it.
1466 */
1467 result = ENXIO;
1468
1469 /* Scan the supplied IDs for a match */
1470 lid = acpi_isa_get_logicalid(child);
1471 cid_count = acpi_isa_get_compatid(child, cids, 8);
1472 while (ids && ids->ip_id) {
1473 if (lid == ids->ip_id) {
1474 result = 0;
1475 goto out;
1476 }
1477 for (i = 0; i < cid_count; i++) {
1478 if (cids[i] == ids->ip_id) {
1479 result = 0;
1480 goto out;
1481 }
1482 }
1483 ids++;
1484 }
1485
1486 out:
10f97674
AP
1487 if (result == 0 && ids->ip_desc)
1488 device_set_desc(child, ids->ip_desc);
1489
5ed44076
MD
1490 return_VALUE (result);
1491}
1492
1493/*
4ea06a72
AP
1494 * Look for a MCFG table. If it is present, use the settings for
1495 * domain (segment) 0 to setup PCI config space access via the memory
1496 * map.
1497 */
1498static void
1499acpi_enable_pcie(void)
1500{
1501 ACPI_TABLE_HEADER *hdr;
1502 ACPI_MCFG_ALLOCATION *alloc, *end;
1503 ACPI_STATUS status;
1504
1505 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1506 if (ACPI_FAILURE(status))
1507 return;
1508
1509 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1510 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1511 while (alloc < end) {
1512 if (alloc->PciSegment == 0) {
1513 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1514 alloc->EndBusNumber);
1515 return;
1516 }
1517 alloc++;
1518 }
1519}
1520
1521/*
10f97674 1522 * Scan all of the ACPI namespace and attach child devices.
5ed44076 1523 *
10f97674
AP
1524 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1525 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1526 * However, in violation of the spec, some systems place their PCI link
1527 * devices in \, so we have to walk the whole namespace. We check the
1528 * type of namespace nodes, so this should be ok.
5ed44076
MD
1529 */
1530static void
1531acpi_probe_children(device_t bus)
1532{
5ed44076
MD
1533
1534 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
5ed44076 1535
5ed44076
MD
1536 /*
1537 * Scan the namespace and insert placeholders for all the devices that
c8b4f0e6 1538 * we find. We also probe/attach any early devices.
5ed44076
MD
1539 *
1540 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1541 * we want to create nodes for all devices, not just those that are
1542 * currently present. (This assumes that we don't want to create/remove
1543 * devices as they appear, which might be smarter.)
1544 */
1545 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
b3af5338
SZ
1546 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100,
1547 acpi_probe_child, NULL, bus, NULL);
5ed44076 1548
10f97674
AP
1549 /* Pre-allocate resources for our rman from any sysresource devices. */
1550 acpi_sysres_alloc(bus);
c8b4f0e6
YT
1551 /* Create any static children by calling device identify methods. */
1552 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1553 bus_generic_probe(bus);
1554
10f97674 1555 /* Probe/attach all children, created staticly and from the namespace. */
5ed44076
MD
1556 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1557 bus_generic_attach(bus);
1558
1559 /*
1560 * Some of these children may have attached others as part of their attach
1561 * process (eg. the root PCI bus driver), so rescan.
1562 */
1563 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1564 bus_generic_attach(bus);
1565
49e48b8a
MD
1566 /* Attach wake sysctls. */
1567 acpi_wake_sysctl_walk(bus);
1568
5ed44076
MD
1569 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1570 return_VOID;
1571}
1572
10f97674
AP
1573/*
1574 * Determine the probe order for a given device.
1575 */
1576static void
1577acpi_probe_order(ACPI_HANDLE handle, int *order)
c8b4f0e6 1578{
10f97674 1579 ACPI_OBJECT_TYPE type;
c8b4f0e6 1580
10f97674
AP
1581 /*
1582 * 1. I/O port and memory system resource holders
1583 * 2. Embedded controllers (to handle early accesses)
1584 * 3. PCI Link Devices
1585 * 100000. CPUs
1586 */
1587 AcpiGetType(handle, &type);
1588 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
c8b4f0e6 1589 *order = 1;
10f97674 1590 else if (acpi_MatchHid(handle, "PNP0C09"))
c8b4f0e6 1591 *order = 2;
10f97674
AP
1592 else if (acpi_MatchHid(handle, "PNP0C0F"))
1593 *order = 3;
1594 else if (type == ACPI_TYPE_PROCESSOR)
1595 *order = 100000;
c8b4f0e6
YT
1596}
1597
5ed44076
MD
1598/*
1599 * Evaluate a child device and determine whether we might attach a device to
1600 * it.
1601 */
1602static ACPI_STATUS
1603acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1604{
29b0d8e7 1605 struct acpi_prw_data prw;
10f97674
AP
1606 ACPI_OBJECT_TYPE type;
1607 ACPI_HANDLE h;
1608 device_t bus, child;
1609 int order;
3e32463a 1610 char *handle_str;
5ed44076
MD
1611
1612 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1613
29b0d8e7 1614 if (acpi_disabled("children"))
4efc8147 1615 return_ACPI_STATUS (AE_OK);
29b0d8e7 1616
5ed44076 1617 /* Skip this device if we think we'll have trouble with it. */
10f97674 1618 if (acpi_avoid(handle))
5ed44076
MD
1619 return_ACPI_STATUS (AE_OK);
1620
c8b4f0e6 1621 bus = (device_t)context;
5ed44076 1622 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
4efc8147 1623 handle_str = acpi_name(handle);
10f97674 1624 switch (type) {
5ed44076 1625 case ACPI_TYPE_DEVICE:
10f97674
AP
1626 /*
1627 * Since we scan from \, be sure to skip system scope objects.
3e32463a
SZ
1628 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1629 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1630 * during the intialization and \_TZ_ is to support Notify() on it.
10f97674 1631 */
3e32463a
SZ
1632 if (strcmp(handle_str, "\\_SB_") == 0 ||
1633 strcmp(handle_str, "\\_TZ_") == 0)
10f97674
AP
1634 break;
1635
3e32463a 1636 if (acpi_parse_prw(handle, &prw) == 0)
4efc8147 1637 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
29b0d8e7 1638
3e32463a
SZ
1639 /* FALLTHROUGH */
1640 case ACPI_TYPE_PROCESSOR:
1641 case ACPI_TYPE_THERMAL:
1642 case ACPI_TYPE_POWER:
5ed44076 1643 /*
10f97674
AP
1644 * Create a placeholder device for this node. Sort the
1645 * placeholder so that the probe/attach passes will run
1646 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1647 * are reserved for special objects (i.e., system
1648 * resources). CPU devices have a very high order to
1649 * ensure they are probed after other devices.
5ed44076 1650 */
10f97674
AP
1651 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1652 order = level * 10 + 100;
1653 acpi_probe_order(handle, &order);
c8b4f0e6 1654 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
5ed44076
MD
1655 if (child == NULL)
1656 break;
c8b4f0e6
YT
1657
1658 /* Associate the handle with the device_t and vice versa. */
5ed44076 1659 acpi_set_handle(child, handle);
c8b4f0e6 1660 AcpiAttachData(handle, acpi_fake_objhandler, child);
5ed44076
MD
1661
1662 /*
1663 * Check that the device is present. If it's not present,
1664 * leave it disabled (so that we have a device_t attached to
1665 * the handle, but we don't probe it).
10f97674
AP
1666 *
1667 * XXX PCI link devices sometimes report "present" but not
1668 * "functional" (i.e. if disabled). Go ahead and probe them
1669 * anyway since we may enable them later.
5ed44076
MD
1670 */
1671 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
10f97674
AP
1672 /* Never disable PCI link devices. */
1673 if (acpi_MatchHid(handle, "PNP0C0F"))
1674 break;
1675 /*
1676 * Docking stations should remain enabled since the system
1677 * may be undocked at boot.
1678 */
1679 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1680 break;
1681
5ed44076
MD
1682 device_disable(child);
1683 break;
1684 }
1685
1686 /*
1687 * Get the device's resource settings and attach them.
1688 * Note that if the device has _PRS but no _CRS, we need
1689 * to decide when it's appropriate to try to configure the
1690 * device. Ignore the return value here; it's OK for the
1691 * device not to have any resources.
1692 */
f9d8cd12 1693 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
5ed44076
MD
1694 break;
1695 }
1696 }
1697
1698 return_ACPI_STATUS (AE_OK);
1699}
1700
c8b4f0e6
YT
1701/*
1702 * AcpiAttachData() requires an object handler but never uses it. This is a
1703 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1704 */
1705void
29bac728 1706acpi_fake_objhandler(ACPI_HANDLE h, void *data)
c8b4f0e6
YT
1707{
1708}
1709
5ed44076
MD
1710static void
1711acpi_shutdown_final(void *arg, int howto)
1712{
10f97674
AP
1713 struct acpi_softc *sc;
1714 ACPI_STATUS status;
5ed44076 1715
f9d8cd12 1716 /*
10f97674
AP
1717 * XXX Shutdown code should only run on the BSP (cpuid 0).
1718 * Some chipsets do not power off the system correctly if called from
1719 * an AP.
f9d8cd12 1720 */
10f97674 1721 sc = arg;
5ed44076 1722 if ((howto & RB_POWEROFF) != 0) {
f9d8cd12 1723 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
5ed44076 1724 if (ACPI_FAILURE(status)) {
e3869ec7 1725 kprintf("AcpiEnterSleepStatePrep failed - %s\n",
5ed44076
MD
1726 AcpiFormatException(status));
1727 return;
1728 }
e3869ec7 1729 kprintf("Powering system off using ACPI\n");
10f97674
AP
1730 ACPI_DISABLE_IRQS();
1731 status = AcpiEnterSleepState(ACPI_STATE_S5);
1732 if (ACPI_FAILURE(status)) {
1733 kprintf("ACPI power-off failed - %s\n", AcpiFormatException(status));
1734 } else {
1735 DELAY(1000000);
1736 kprintf("ACPI power-off failed - timeout\n");
1737 }
1738 } else if ((howto & RB_HALT) == 0 &&
1739 (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER) &&
1740 sc->acpi_handle_reboot) {
1741 /* Reboot using the reset register. */
1742 status = AcpiWrite(
1743 AcpiGbl_FADT.ResetValue, &AcpiGbl_FADT.ResetRegister);
1744 if (ACPI_FAILURE(status)) {
1745 kprintf("ACPI reset failed - %s\n", AcpiFormatException(status));
1746 } else {
1747 DELAY(1000000);
1748 kprintf("ACPI reset failed - timeout\n");
1749 }
1750 } else if (sc->acpi_do_disable && panicstr == NULL) {
1751 /*
1752 * Only disable ACPI if the user requested. On some systems, writing
1753 * the disable value to SMI_CMD hangs the system.
1754 */
e3869ec7 1755 kprintf("Shutting down ACPI\n");
5ed44076
MD
1756 AcpiTerminate();
1757 }
1758}
1759
1760static void
1761acpi_enable_fixed_events(struct acpi_softc *sc)
1762{
1763 static int first_time = 1;
1764
5ed44076 1765 /* Enable and clear fixed events and install handlers. */
e1eeedd0 1766 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
5ed44076
MD
1767 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1768 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1769 acpi_event_power_button_sleep, sc);
1770 if (first_time)
1771 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1772 }
e1eeedd0 1773 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
5ed44076
MD
1774 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1775 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1776 acpi_event_sleep_button_sleep, sc);
1777 if (first_time)
1778 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1779 }
1780
1781 first_time = 0;
1782}
1783
1784/*
1785 * Returns true if the device is actually present and should
1786 * be attached to. This requires the present, enabled, UI-visible
1787 * and diagnostics-passed bits to be set.
1788 */
1789BOOLEAN
1790acpi_DeviceIsPresent(device_t dev)
1791{
1792 ACPI_DEVICE_INFO *devinfo;
1793 ACPI_HANDLE h;
5ed44076
MD
1794 ACPI_STATUS error;
1795 int ret;
1796
5ed44076
MD
1797 ret = FALSE;
1798 if ((h = acpi_get_handle(dev)) == NULL)
1799 return (FALSE);
29bac728 1800 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076
MD
1801 if (ACPI_FAILURE(error))
1802 return (FALSE);
5ed44076
MD
1803
1804 /* If no _STA method, must be present */
1805 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1806 ret = TRUE;
1807
1808 /* Return true for 'present' and 'functioning' */
10f97674 1809 if (ACPI_DEVICE_PRESENT(devinfo->CurrentStatus))
5ed44076
MD
1810 ret = TRUE;
1811
29bac728 1812 AcpiOsFree(devinfo);
5ed44076
MD
1813 return (ret);
1814}
1815
1816/*
1817 * Returns true if the battery is actually present and inserted.
1818 */
1819BOOLEAN
1820acpi_BatteryIsPresent(device_t dev)
1821{
1822 ACPI_DEVICE_INFO *devinfo;
1823 ACPI_HANDLE h;
5ed44076
MD
1824 ACPI_STATUS error;
1825 int ret;
1826
5ed44076
MD
1827 ret = FALSE;
1828 if ((h = acpi_get_handle(dev)) == NULL)
1829 return (FALSE);
29bac728 1830 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076
MD
1831 if (ACPI_FAILURE(error))
1832 return (FALSE);
5ed44076
MD
1833
1834 /* If no _STA method, must be present */
1835 if ((devinfo->Valid & ACPI_VALID_STA) == 0)
1836 ret = TRUE;
1837
10f97674
AP
1838 /* Return true for 'present', 'battery present', and 'functioning' */
1839 if (ACPI_BATTERY_PRESENT(devinfo->CurrentStatus))
5ed44076
MD
1840 ret = TRUE;
1841
29bac728 1842 AcpiOsFree(devinfo);
5ed44076
MD
1843 return (ret);
1844}
1845
1846/*
c8b4f0e6 1847 * Match a HID string against a handle
5ed44076
MD
1848 */
1849BOOLEAN
10f97674 1850acpi_MatchHid(ACPI_HANDLE h, const char *hid)
5ed44076
MD
1851{
1852 ACPI_DEVICE_INFO *devinfo;
5ed44076
MD
1853 ACPI_STATUS error;
1854 int ret, i;
1855
5ed44076 1856 ret = FALSE;
c8b4f0e6
YT
1857 if (hid == NULL || h == NULL)
1858 return (ret);
29bac728 1859 error = AcpiGetObjectInfo(h, &devinfo);
5ed44076 1860 if (ACPI_FAILURE(error))
c8b4f0e6 1861 return (ret);
5ed44076
MD
1862
1863 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
29bac728 1864 strcmp(hid, devinfo->HardwareId.String) == 0)
5ed44076
MD
1865 ret = TRUE;
1866 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
29bac728
MA
1867 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
1868 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
5ed44076
MD
1869 ret = TRUE;
1870 break;
1871 }
1872 }
1873 }
1874
29bac728 1875 AcpiOsFree(devinfo);
5ed44076
MD
1876 return (ret);
1877}
1878
1879/*
1880 * Return the handle of a named object within our scope, ie. that of (parent)
1881 * or one if its parents.
1882 */
1883ACPI_STATUS
1884acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
1885{
1886 ACPI_HANDLE r;
1887 ACPI_STATUS status;
1888
5ed44076
MD
1889 /* Walk back up the tree to the root */
1890 for (;;) {
1891 status = AcpiGetHandle(parent, path, &r);
1892 if (ACPI_SUCCESS(status)) {
1893 *result = r;
1894 return (AE_OK);
1895 }
10f97674 1896 /* XXX Return error here? */
5ed44076
MD
1897 if (status != AE_NOT_FOUND)
1898 return (AE_OK);
1899 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
1900 return (AE_NOT_FOUND);
1901 parent = r;
1902 }
1903}
1904
f9d8cd12
MD
1905/* Find the difference between two PM tick counts. */
1906uint32_t
1907acpi_TimerDelta(uint32_t end, uint32_t start)
1908{
1909 uint32_t delta;
1910
1911 if (end >= start)
1912 delta = end - start;
10f97674 1913 else if (AcpiGbl_FADT.Flags & ACPI_FADT_32BIT_TIMER)
f9d8cd12 1914 delta = ((0xFFFFFFFF - start) + end + 1);
10f97674
AP
1915 else
1916 delta = ((0x00FFFFFF - start) + end + 1) & 0x00FFFFFF;
f9d8cd12
MD
1917 return (delta);
1918}
1919
5ed44076
MD
1920/*
1921 * Allocate a buffer with a preset data size.
1922 */
1923ACPI_BUFFER *
1924acpi_AllocBuffer(int size)
1925{
1926 ACPI_BUFFER *buf;
1927
10f97674
AP
1928 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
1929 return (NULL);
5ed44076
MD
1930 buf->Length = size;
1931 buf->Pointer = (void *)(buf + 1);
1932 return (buf);
1933}
1934
f9d8cd12
MD
1935ACPI_STATUS
1936acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
1937{
1938 ACPI_OBJECT arg1;
1939 ACPI_OBJECT_LIST args;
1940
f9d8cd12
MD
1941 arg1.Type = ACPI_TYPE_INTEGER;
1942 arg1.Integer.Value = number;
1943 args.Count = 1;
1944 args.Pointer = &arg1;
1945
1946 return (AcpiEvaluateObject(handle, path, &args, NULL));
1947}
1948
5ed44076
MD
1949/*
1950 * Evaluate a path that should return an integer.
1951 */
1952ACPI_STATUS
f9d8cd12 1953acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
5ed44076
MD
1954{
1955 ACPI_STATUS status;
1956 ACPI_BUFFER buf;
1957 ACPI_OBJECT param;
1958
5ed44076
MD
1959 if (handle == NULL)
1960 handle = ACPI_ROOT_OBJECT;
1961
1962 /*
1963 * Assume that what we've been pointed at is an Integer object, or
1964 * a method that will return an Integer.
1965 */
1966 buf.Pointer = &param;
1967 buf.Length = sizeof(param);
1968 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1969 if (ACPI_SUCCESS(status)) {
1970 if (param.Type == ACPI_TYPE_INTEGER)
1971 *number = param.Integer.Value;
1972 else
1973 status = AE_TYPE;
1974 }
1975
1976 /*
1977 * In some applications, a method that's expected to return an Integer
1978 * may instead return a Buffer (probably to simplify some internal
1979 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
1980 * convert it into an Integer as best we can.
1981 *
1982 * This is a hack.
1983 */
1984 if (status == AE_BUFFER_OVERFLOW) {
1985 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
1986 status = AE_NO_MEMORY;
1987 } else {
1988 status = AcpiEvaluateObject(handle, path, NULL, &buf);
1989 if (ACPI_SUCCESS(status))
1990 status = acpi_ConvertBufferToInteger(&buf, number);
1991 AcpiOsFree(buf.Pointer);
1992 }
1993 }
1994 return (status);
1995}
1996
1997ACPI_STATUS
f9d8cd12 1998acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
5ed44076
MD
1999{
2000 ACPI_OBJECT *p;
f9d8cd12 2001 UINT8 *val;
5ed44076
MD
2002 int i;
2003
2004 p = (ACPI_OBJECT *)bufp->Pointer;
2005 if (p->Type == ACPI_TYPE_INTEGER) {
2006 *number = p->Integer.Value;
2007 return (AE_OK);
2008 }
2009 if (p->Type != ACPI_TYPE_BUFFER)
2010 return (AE_TYPE);
2011 if (p->Buffer.Length > sizeof(int))
2012 return (AE_BAD_DATA);
2013
2014 *number = 0;
f9d8cd12 2015 val = p->Buffer.Pointer;
5ed44076 2016 for (i = 0; i < p->Buffer.Length; i++)
f9d8cd12 2017 *number += val[i] << (i * 8);
5ed44076
MD
2018 return (AE_OK);
2019}
2020
2021/*
2022 * Iterate over the elements of an a package object, calling the supplied
2023 * function for each element.
2024 *
2025 * XXX possible enhancement might be to abort traversal on error.
2026 */
2027ACPI_STATUS
2028acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2029 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2030{
2031 ACPI_OBJECT *comp;
2032 int i;
10f97674 2033
5ed44076
MD
2034 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2035 return (AE_BAD_PARAMETER);
2036
2037 /* Iterate over components */
2038 i = 0;
2039 comp = pkg->Package.Elements;
2040 for (; i < pkg->Package.Count; i++, comp++)
2041 func(comp, arg);
2042
2043 return (AE_OK);
2044}
2045
2046/*
2047 * Find the (index)th resource object in a set.
2048 */
2049ACPI_STATUS
2050acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2051{
2052 ACPI_RESOURCE *rp;
2053 int i;
2054
2055 rp = (ACPI_RESOURCE *)buf->Pointer;
2056 i = index;
2057 while (i-- > 0) {
10f97674 2058 /* Range check */
5ed44076
MD
2059 if (rp > (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2060 return (AE_BAD_PARAMETER);
2061
2062 /* Check for terminator */
e1eeedd0 2063 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
5ed44076
MD
2064 return (AE_NOT_FOUND);
2065 rp = ACPI_NEXT_RESOURCE(rp);
2066 }
2067 if (resp != NULL)
2068 *resp = rp;
2069
2070 return (AE_OK);
2071}
2072
2073/*
2074 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2075 *
2076 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2077 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2078 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2079 * resources.
2080 */
2081#define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2082
2083ACPI_STATUS
2084acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2085{
2086 ACPI_RESOURCE *rp;
2087 void *newp;
10f97674 2088
5ed44076
MD
2089 /* Initialise the buffer if necessary. */
2090 if (buf->Pointer == NULL) {
2091 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2092 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2093 return (AE_NO_MEMORY);
2094 rp = (ACPI_RESOURCE *)buf->Pointer;
e1eeedd0 2095 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
5ed44076
MD
2096 rp->Length = 0;
2097 }
2098 if (res == NULL)
2099 return (AE_OK);
10f97674 2100
5ed44076
MD
2101 /*
2102 * Scan the current buffer looking for the terminator.
2103 * This will either find the terminator or hit the end
2104 * of the buffer and return an error.
2105 */
2106 rp = (ACPI_RESOURCE *)buf->Pointer;
2107 for (;;) {
2108 /* Range check, don't go outside the buffer */
2109 if (rp >= (ACPI_RESOURCE *)((u_int8_t *)buf->Pointer + buf->Length))
2110 return (AE_BAD_PARAMETER);
e1eeedd0 2111 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
5ed44076
MD
2112 break;
2113 rp = ACPI_NEXT_RESOURCE(rp);
2114 }
2115
2116 /*
2117 * Check the size of the buffer and expand if required.
2118 *
2119 * Required size is:
2120 * size of existing resources before terminator +
2121 * size of new resource and header +
2122 * size of terminator.
2123 *
2124 * Note that this loop should really only run once, unless
2125 * for some reason we are stuffing a *really* huge resource.
2126 */
2127 while ((((u_int8_t *)rp - (u_int8_t *)buf->Pointer) +
e1eeedd0
YT
2128 res->Length + ACPI_RS_SIZE_NO_DATA +
2129 ACPI_RS_SIZE_MIN) >= buf->Length) {
5ed44076
MD
2130 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2131 return (AE_NO_MEMORY);
2132 bcopy(buf->Pointer, newp, buf->Length);
2133 rp = (ACPI_RESOURCE *)((u_int8_t *)newp +
2134 ((u_int8_t *)rp - (u_int8_t *)buf->Pointer));
2135 AcpiOsFree(buf->Pointer);
2136 buf->Pointer = newp;
2137 buf->Length += buf->Length;
2138 }
5ed44076 2139
10f97674
AP
2140 /* Insert the new resource. */
2141 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2142
2143 /* And add the terminator. */
2144 rp = ACPI_NEXT_RESOURCE(rp);
2145 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2146 rp->Length = 0;
2147
2148 return (AE_OK);
2149}
2150
2151/*
2152 * Set interrupt model.
2153 */
2154ACPI_STATUS
2155acpi_SetIntrModel(int model)
2156{
2157
2158 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2159}
2160
2161/*
2162 * DEPRECATED. This interface has serious deficiencies and will be
2163 * removed.
2164 *
2165 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2166 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2167 */
2168ACPI_STATUS
2169acpi_SetSleepState(struct acpi_softc *sc, int state)
2170{
2171 static int once;
2172
2173 if (!once) {
2174 kprintf(
2175"warning: acpi_SetSleepState() deprecated, need to update your software\n");
2176 once = 1;
2177 }
2178 return (acpi_EnterSleepState(sc, state));
2179}
2180
2181static void
2182acpi_sleep_force(void *arg)
2183{
2184 struct acpi_softc *sc;
2185
2186 kprintf("acpi: suspend request timed out, forcing sleep now\n");
2187 sc = arg;
2188 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2189 kprintf("acpi: force sleep state S%d failed\n", sc->acpi_next_sstate);
2190}
2191
2192/*
2193 * Request that the system enter the given suspend state. All /dev/apm
2194 * devices and devd(8) will be notified. Userland then has a chance to
2195 * save state and acknowledge the request. The system sleeps once all
2196 * acks are in.
2197 */
2198int
2199acpi_ReqSleepState(struct acpi_softc *sc, int state)
2200{
5c7ffd75 2201#ifdef notyet
10f97674 2202 struct apm_clone_data *clone;
5c7ffd75 2203#endif
10f97674
AP
2204
2205 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2206 return (EINVAL);
2207
2208 /* S5 (soft-off) should be entered directly with no waiting. */
2209 if (state == ACPI_STATE_S5) {
2210 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2211 return (0);
2212 else
2213 return (ENXIO);
2214 }
2215
2216#if !defined(__i386__)
2217 /* This platform does not support acpi suspend/resume. */
2218 return (EOPNOTSUPP);
2219#endif
2220
2221 /* If a suspend request is already in progress, just return. */
2222 ACPI_LOCK(acpi);
2223 if (sc->acpi_next_sstate != 0) {
2224 ACPI_UNLOCK(acpi);
2225 return (0);
2226 }
2227
2228 /* Record the pending state and notify all apm devices. */
2229 sc->acpi_next_sstate = state;
2230#if 0
2231 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2232 clone->notify_status = APM_EV_NONE;
2233 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
468b4dde 2234 KNOTE(&clone->sel_read.si_note, 0);
10f97674
AP
2235 }
2236 }
2237#endif
2238
2239 /* If devd(8) is not running, immediately enter the sleep state. */
2240 if (devctl_process_running() == FALSE) {
2241 ACPI_UNLOCK(acpi);
2242 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2243 return (0);
2244 } else {
2245 return (ENXIO);
2246 }
2247 }
2248
2249 /* Now notify devd(8) also. */
2250 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2251
2252 /*
2253 * Set a timeout to fire if userland doesn't ack the suspend request
2254 * in time. This way we still eventually go to sleep if we were
2255 * overheating or running low on battery, even if userland is hung.
2256 * We cancel this timeout once all userland acks are in or the
2257 * suspend request is aborted.
2258 */
2259 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2260 ACPI_UNLOCK(acpi);
2261 return (0);
5ed44076
MD
2262}
2263
2264/*
10f97674
AP
2265 * Acknowledge (or reject) a pending sleep state. The caller has
2266 * prepared for suspend and is now ready for it to proceed. If the
2267 * error argument is non-zero, it indicates suspend should be cancelled
2268 * and gives an errno value describing why. Once all votes are in,
2269 * we suspend the system.
5ed44076 2270 */
10f97674
AP
2271int
2272acpi_AckSleepState(struct apm_clone_data *clone, int error)
5ed44076 2273{
10f97674
AP
2274 struct acpi_softc *sc;
2275 int ret, sleeping;
5ed44076 2276
10f97674
AP
2277#if !defined(__i386__)
2278 /* This platform does not support acpi suspend/resume. */
2279 return (EOPNOTSUPP);
2280#endif
2281
2282 /* If no pending sleep state, return an error. */
2283 ACPI_LOCK(acpi);
2284 sc = clone->acpi_sc;
2285 if (sc->acpi_next_sstate == 0) {
2286 ACPI_UNLOCK(acpi);
2287 return (ENXIO);
2288 }
2289
2290 /* Caller wants to abort suspend process. */
2291 if (error) {
2292 sc->acpi_next_sstate = 0;
2293 callout_stop(&sc->susp_force_to);
2294 kprintf("acpi: listener on %s cancelled the pending suspend\n",
2295 devtoname(clone->cdev));
2296 ACPI_UNLOCK(acpi);
2297 return (0);
2298 }
2299
2300 /*
2301 * Mark this device as acking the suspend request. Then, walk through
2302 * all devices, seeing if they agree yet. We only count devices that
2303 * are writable since read-only devices couldn't ack the request.
2304 */
2305 clone->notify_status = APM_EV_ACKED;
2306 sleeping = TRUE;
2307 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2308 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2309 clone->notify_status != APM_EV_ACKED) {
2310 sleeping = FALSE;
2311 break;
2312 }
2313 }
2314
2315 /* If all devices have voted "yes", we will suspend now. */
2316 if (sleeping)
2317 callout_stop(&sc->susp_force_to);
2318 ACPI_UNLOCK(acpi);
2319 ret = 0;
2320 if (sleeping) {
2321 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2322 ret = ENODEV;
2323 }
2324
2325 return (ret);
2326}
5ed44076
MD
2327
2328static void
2329acpi_sleep_enable(void *arg)
2330{
2331 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2332}
2333
10f97674
AP
2334enum acpi_sleep_state {
2335 ACPI_SS_NONE,
2336 ACPI_SS_GPE_SET,
2337 ACPI_SS_DEV_SUSPEND,
2338 ACPI_SS_SLP_PREP,
2339 ACPI_SS_SLEPT,
2340};
2341
5ed44076 2342/*
10f97674 2343 * Enter the desired system sleep state.
5ed44076
MD
2344 *
2345 * Currently we support S1-S5 but S4 is only S4BIOS
2346 */
10f97674
AP
2347static ACPI_STATUS
2348acpi_EnterSleepState(struct acpi_softc *sc, int state)
5ed44076 2349{
10f97674 2350 ACPI_STATUS status;
5ed44076
MD
2351 UINT8 TypeA;
2352 UINT8 TypeB;
10f97674 2353 enum acpi_sleep_state slp_state;
5ed44076
MD
2354
2355 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
5ed44076 2356
10f97674
AP
2357 /* Re-entry once we're suspending is not allowed. */
2358 status = AE_OK;
2359 ACPI_LOCK(acpi);
2360 if (sc->acpi_sleep_disabled) {
2361 ACPI_UNLOCK(acpi);
2362 kprintf("acpi: suspend request ignored (not ready yet)\n");
2363 return (AE_ERROR);
2364 }
2365 sc->acpi_sleep_disabled = 1;
2366 ACPI_UNLOCK(acpi);
5ed44076 2367
10f97674
AP
2368 /*
2369 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2370 * drivers need this.
2371 */
2372 //get_mplock();
2373 slp_state = ACPI_SS_NONE;
5ed44076
MD
2374 switch (state) {
2375 case ACPI_STATE_S1:
2376 case ACPI_STATE_S2:
2377 case ACPI_STATE_S3:
2378 case ACPI_STATE_S4:
10f97674 2379 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
5ed44076
MD
2380 if (status == AE_NOT_FOUND) {
2381 device_printf(sc->acpi_dev,
2382 "Sleep state S%d not supported by BIOS\n", state);
2383 break;
2384 } else if (ACPI_FAILURE(status)) {
2385 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2386 AcpiFormatException(status));
2387 break;
2388 }
2389
2390 sc->acpi_sstate = state;
5ed44076 2391
10f97674
AP
2392 /* Enable any GPEs as appropriate and requested by the user. */
2393 acpi_wake_prep_walk(state);
2394 slp_state = ACPI_SS_GPE_SET;
49e48b8a 2395
10f97674
AP
2396 /*
2397 * Inform all devices that we are going to sleep. If at least one
2398 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2399 *
2400 * XXX Note that a better two-pass approach with a 'veto' pass
2401 * followed by a "real thing" pass would be better, but the current
2402 * bus interface does not provide for this.
2403 */
5ed44076 2404 if (DEVICE_SUSPEND(root_bus) != 0) {
10f97674
AP
2405 device_printf(sc->acpi_dev, "device_suspend failed\n");
2406 break;
5ed44076 2407 }
10f97674
AP
2408 slp_state = ACPI_SS_DEV_SUSPEND;
2409
2410 /* If testing device suspend only, back out of everything here. */
2411 if (acpi_susp_bounce)
2412 break;
5ed44076
MD
2413
2414 status = AcpiEnterSleepStatePrep(state);
2415 if (ACPI_FAILURE(status)) {
2416 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2417 AcpiFormatException(status));
2418 break;
2419 }
10f97674 2420 slp_state = ACPI_SS_SLP_PREP;
5ed44076
MD
2421
2422 if (sc->acpi_sleep_delay > 0)
2423 DELAY(sc->acpi_sleep_delay * 1000000);
2424
2425 if (state != ACPI_STATE_S1) {
2426 acpi_sleep_machdep(sc, state);
10f97674 2427
5ed44076
MD
2428 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2429 if (state == ACPI_STATE_S4)
2430 AcpiEnable();
2431 } else {
10f97674
AP
2432 ACPI_DISABLE_IRQS();
2433 status = AcpiEnterSleepState(state);
5ed44076
MD
2434 if (ACPI_FAILURE(status)) {
2435 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2436 AcpiFormatException(status));
2437 break;
2438 }
2439 }
10f97674 2440 slp_state = ACPI_SS_SLEPT;
5ed44076
MD
2441 break;
2442 case ACPI_STATE_S5:
2443 /*
2444 * Shut down cleanly and power off. This will call us back through the
2445 * shutdown handlers.
2446 */
2447 shutdown_nice(RB_POWEROFF);
2448 break;
2449 case ACPI_STATE_S0:
2450 default:
2451 status = AE_BAD_PARAMETER;
2452 break;
2453 }
2454
10f97674
AP
2455 /*
2456 * Back out state according to how far along we got in the suspend
2457 * process. This handles both the error and success cases.
2458 */
2459 sc->acpi_next_sstate = 0;
2460 if (slp_state >= ACPI_SS_GPE_SET) {
2461 acpi_wake_prep_walk(state);
2462 sc->acpi_sstate = ACPI_STATE_S0;
2463 }
2464 if (slp_state >= ACPI_SS_SLP_PREP)
2465 AcpiLeaveSleepState(state);
2466 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2467 DEVICE_RESUME(root_bus);
2468 if (slp_state >= ACPI_SS_SLEPT)
2469 acpi_enable_fixed_events(sc);
2470
2471 /* Allow another sleep request after a while. */
2472 /* XXX: needs timeout */
2473 if (state != ACPI_STATE_S5)
2474 acpi_sleep_enable(sc);
5ed44076 2475
10f97674
AP
2476 /* Run /etc/rc.resume after we are back. */
2477 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2478
2479 //rel_mplock();
5ed44076
MD
2480 return_ACPI_STATUS (status);
2481}
2482
29b0d8e7 2483/* Enable or disable the device's GPE. */
49e48b8a
MD
2484int
2485acpi_wake_set_enable(device_t dev, int enable)
2486{
2487 struct acpi_prw_data prw;
49e48b8a
MD
2488 ACPI_STATUS status;
2489 int flags;
2490
10f97674
AP
2491 /* Make sure the device supports waking the system and get the GPE. */
2492 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
49e48b8a
MD
2493 return (ENXIO);
2494
10f97674 2495 flags = acpi_get_flags(dev);
49e48b8a 2496 if (enable) {
4efc8147 2497 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
29b0d8e7 2498 ACPI_GPE_ENABLE);
49e48b8a
MD
2499 if (ACPI_FAILURE(status)) {
2500 device_printf(dev, "enable wake failed\n");
2501 return (ENXIO);
2502 }
10f97674 2503 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
49e48b8a 2504 } else {
4efc8147 2505 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
29b0d8e7 2506 ACPI_GPE_DISABLE);
49e48b8a
MD
2507 if (ACPI_FAILURE(status)) {
2508 device_printf(dev, "disable wake failed\n");
2509 return (ENXIO);
2510 }
10f97674 2511 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
49e48b8a
MD
2512 }
2513
2514 return (0);
2515}
2516
10f97674
AP
2517static int
2518acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
49e48b8a
MD
2519{
2520 struct acpi_prw_data prw;
10f97674 2521 device_t dev;
49e48b8a 2522
10f97674 2523 /* Check that this is a wake-capable device and get its GPE. */
49e48b8a
MD
2524 if (acpi_parse_prw(handle, &prw) != 0)
2525 return (ENXIO);
10f97674 2526 dev = acpi_get_device(handle);
49e48b8a
MD
2527
2528 /*
10f97674
AP
2529 * The destination sleep state must be less than (i.e., higher power)
2530 * or equal to the value specified by _PRW. If this GPE cannot be
2531 * enabled for the next sleep state, then disable it. If it can and
2532 * the user requested it be enabled, turn on any required power resources
2533 * and set _PSW.
49e48b8a 2534 */
10f97674 2535 if (sstate > prw.lowest_wake) {
4efc8147 2536 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
49e48b8a 2537 if (bootverbose)
10f97674
AP
2538 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2539 acpi_name(handle), sstate);
2540 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2541 acpi_pwr_wake_enable(handle, 1);
49e48b8a 2542 acpi_SetInteger(handle, "_PSW", 1);
10f97674
AP
2543 if (bootverbose)
2544 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2545 acpi_name(handle), sstate);
49e48b8a
MD
2546 }
2547
49e48b8a
MD
2548 return (0);
2549}
2550
10f97674
AP
2551static int
2552acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
49e48b8a
MD
2553{
2554 struct acpi_prw_data prw;
10f97674 2555 device_t dev;
49e48b8a 2556
10f97674
AP
2557 /*
2558 * Check that this is a wake-capable device and get its GPE. Return
2559 * now if the user didn't enable this device for wake.
2560 */
49e48b8a
MD
2561 if (acpi_parse_prw(handle, &prw) != 0)
2562 return (ENXIO);
10f97674
AP
2563 dev = acpi_get_device(handle);
2564 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2565 return (0);
49e48b8a
MD
2566
2567 /*
10f97674
AP
2568 * If this GPE couldn't be enabled for the previous sleep state, it was
2569 * disabled before going to sleep so re-enable it. If it was enabled,
2570 * clear _PSW and turn off any power resources it used.
49e48b8a 2571 */
10f97674 2572 if (sstate > prw.lowest_wake) {
4efc8147 2573 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
10f97674
AP
2574 if (bootverbose)
2575 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2576 } else {
2577 acpi_SetInteger(handle, "_PSW", 0);
2578 acpi_pwr_wake_enable(handle, 0);
2579 if (bootverbose)
2580 device_printf(dev, "run_prep cleaned up for %s\n",
2581 acpi_name(handle));
2582 }
2583
49e48b8a
MD
2584 return (0);
2585}
2586
2587static ACPI_STATUS
10f97674 2588acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
49e48b8a 2589{
10f97674 2590 int sstate;
49e48b8a 2591
10f97674
AP
2592 /* If suspending, run the sleep prep function, otherwise wake. */
2593 sstate = *(int *)context;
2594 if (AcpiGbl_SystemAwakeAndRunning)
2595 acpi_wake_sleep_prep(handle, sstate);
2596 else
2597 acpi_wake_run_prep(handle, sstate);
49e48b8a
MD
2598 return (AE_OK);
2599}
2600
10f97674 2601/* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
49e48b8a 2602static int
10f97674 2603acpi_wake_prep_walk(int sstate)
49e48b8a
MD
2604{
2605 ACPI_HANDLE sb_handle;
2606
4efc8147 2607 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) {
b3af5338
SZ
2608 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2609 acpi_wake_prep, NULL, &sstate, NULL);
4efc8147 2610 }
49e48b8a
MD
2611 return (0);
2612}
2613
2614/* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2615static int
2616acpi_wake_sysctl_walk(device_t dev)
2617{
b955fe7e 2618#ifdef notyet
49e48b8a
MD
2619 int error, i, numdevs;
2620 device_t *devlist;
2621 device_t child;
10f97674 2622 ACPI_STATUS status;
49e48b8a
MD
2623
2624 error = device_get_children(dev, &devlist, &numdevs);
10f97674
AP
2625 if (error != 0 || numdevs == 0) {
2626 if (numdevs == 0)
2627 kfree(devlist, M_TEMP);
49e48b8a 2628 return (error);
10f97674 2629 }
49e48b8a
MD
2630 for (i = 0; i < numdevs; i++) {
2631 child = devlist[i];
10f97674 2632 acpi_wake_sysctl_walk(child);
49e48b8a
MD
2633 if (!device_is_attached(child))
2634 continue;
10f97674
AP
2635 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2636 if (ACPI_SUCCESS(status)) {
49e48b8a
MD
2637 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2638 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2639 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2640 acpi_wake_set_sysctl, "I", "Device set to wake the system");
49e48b8a 2641 }
49e48b8a 2642 }
efda3bd0 2643 kfree(devlist, M_TEMP);
b955fe7e 2644#endif
49e48b8a
MD
2645
2646 return (0);
2647}
2648
b955fe7e 2649#ifdef notyet
49e48b8a
MD
2650/* Enable or disable wake from userland. */
2651static int
2652acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2653{
2654 int enable, error;
2655 device_t dev;
2656
2657 dev = (device_t)arg1;
10f97674 2658 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
49e48b8a
MD
2659
2660 error = sysctl_handle_int(oidp, &enable, 0, req);
2661 if (error != 0 || req->newptr == NULL)
2662 return (error);
2663 if (enable != 0 && enable != 1)
2664 return (EINVAL);
2665
2666 return (acpi_wake_set_enable(dev, enable));
2667}
b955fe7e 2668#endif
49e48b8a
MD
2669
2670/* Parse a device's _PRW into a structure. */
10f97674 2671int
49e48b8a
MD
2672acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2673{
2674 ACPI_STATUS status;
2675 ACPI_BUFFER prw_buffer;
2676 ACPI_OBJECT *res, *res2;
10f97674 2677 int error, i, power_count;
49e48b8a
MD
2678
2679 if (h == NULL || prw == NULL)
2680 return (EINVAL);
2681
2682 /*
2683 * The _PRW object (7.2.9) is only required for devices that have the
2684 * ability to wake the system from a sleeping state.
2685 */
2686 error = EINVAL;
2687 prw_buffer.Pointer = NULL;
2688 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2689 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2690 if (ACPI_FAILURE(status))
2691 return (ENOENT);
2692 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2693 if (res == NULL)
2694 return (ENOENT);
2695 if (!ACPI_PKG_VALID(res, 2))
2696 goto out;
2697
2698 /*
2699 * Element 1 of the _PRW object:
2700 * The lowest power system sleeping state that can be entered while still
2701 * providing wake functionality. The sleeping state being entered must
2702 * be less than (i.e., higher power) or equal to this value.
2703 */
2704 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2705 goto out;
2706
2707 /*
2708 * Element 0 of the _PRW object:
2709 */
2710 switch (res->Package.Elements[0].Type) {
2711 case ACPI_TYPE_INTEGER:
2712 /*
2713 * If the data type of this package element is numeric, then this
2714 * _PRW package element is the bit index in the GPEx_EN, in the
2715 * GPE blocks described in the FADT, of the enable bit that is
2716 * enabled for the wake event.
2717 */
2718 prw->gpe_handle = NULL;
2719 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2720 error = 0;
2721 break;
2722 case ACPI_TYPE_PACKAGE:
2723 /*
2724 * If the data type of this package element is a package, then this
2725 * _PRW package element is itself a package containing two
2726 * elements. The first is an object reference to the GPE Block
2727 * device that contains the GPE that will be triggered by the wake
2728 * event. The second element is numeric and it contains the bit
2729 * index in the GPEx_EN, in the GPE Block referenced by the
2730 * first element in the package, of the enable bit that is enabled for
2731 * the wake event.
2732 *
2733 * For example, if this field is a package then it is of the form:
2734 * Package() {\_SB.PCI0.ISA.GPE, 2}
2735 */
2736 res2 = &res->Package.Elements[0];
2737 if (!ACPI_PKG_VALID(res2, 2))
2738 goto out;
2739 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2740 if (prw->gpe_handle == NULL)
2741 goto out;
2742 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2743 goto out;
2744 error = 0;
2745 break;
2746 default:
2747 goto out;
2748 }
2749
10f97674
AP
2750 /* Elements 2 to N of the _PRW object are power resources. */
2751 power_count = res->Package.Count - 2;
2752 if (power_count > ACPI_PRW_MAX_POWERRES) {
2753 kprintf("ACPI device %s has too many power resources\n", acpi_name(h));
2754 power_count = 0;
2755 }
2756 prw->power_res_count = power_count;
2757 for (i = 0; i < power_count; i++)
2758 prw->power_res[i] = res->Package.Elements[i];
49e48b8a
MD
2759
2760out:
2761 if (prw_buffer.Pointer != NULL)
2762 AcpiOsFree(prw_buffer.Pointer);
2763 return (error);
2764}
2765
5ed44076 2766/*
5ed44076
MD
2767 * ACPI Event Handlers
2768 */
2769
2770/* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2771
2772static void
2773acpi_system_eventhandler_sleep(void *arg, int state)
2774{
10f97674
AP
2775 int ret;
2776
5ed44076
MD
2777 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2778
10f97674
AP
2779 /* Check if button action is disabled. */
2780 if (state == ACPI_S_STATES_MAX + 1)
2781 return;
2782
2783 /* Request that the system prepare to enter the given suspend state. */
2784 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2785 if (ret != 0)
2786 kprintf("acpi: request to enter state S%d failed (err %d)\n",
2787 state, ret);
2788
5ed44076
MD
2789 return_VOID;
2790}
2791
2792static void
2793acpi_system_eventhandler_wakeup(void *arg, int state)
2794{
5ed44076 2795
10f97674 2796 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
5ed44076 2797
10f97674 2798 /* Currently, nothing to do for wakeup. */
5ed44076
MD
2799
2800 return_VOID;
2801}
2802
2803/*
2804 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2805 */
2806UINT32
2807acpi_event_power_button_sleep(void *context)
2808{
2809 struct acpi_softc *sc = (struct acpi_softc *)context;
2810
2811 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2812
2813 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2814
2815 return_VALUE (ACPI_INTERRUPT_HANDLED);
2816}
2817
2818UINT32
2819acpi_event_power_button_wake(void *context)
2820{
2821 struct acpi_softc *sc = (struct acpi_softc *)context;
2822
2823 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2824
2825 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
2826
2827 return_VALUE (ACPI_INTERRUPT_HANDLED);
2828}
2829
2830UINT32
2831acpi_event_sleep_button_sleep(void *context)
2832{
2833 struct acpi_softc *sc = (struct acpi_softc *)context;
2834
2835 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2836
2837 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
2838
2839 return_VALUE (ACPI_INTERRUPT_HANDLED);
2840}
2841
2842UINT32
2843acpi_event_sleep_button_wake(void *context)
2844{
2845 struct acpi_softc *sc = (struct acpi_softc *)context;
2846
2847 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2848
2849 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
2850
2851 return_VALUE (ACPI_INTERRUPT_HANDLED);
2852}
2853
2854/*
10f97674
AP
2855 * XXX This static buffer is suboptimal. There is no locking so only
2856 * use this for single-threaded callers.
5ed44076 2857 */
5ed44076
MD
2858char *
2859acpi_name(ACPI_HANDLE handle)
2860{
10f97674
AP
2861 ACPI_BUFFER buf;
2862 static char data[256];
5ed44076 2863
10f97674
AP
2864 buf.Length = sizeof(data);
2865 buf.Pointer = data;
5ed44076 2866
10f97674
AP
2867 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
2868 return (data);
2869 return ("(unknown)");
5ed44076
MD
2870}
2871
2872/*
2873 * Debugging/bug-avoidance. Avoid trying to fetch info on various
2874 * parts of the namespace.
2875 */
2876int
2877acpi_avoid(ACPI_HANDLE handle)
2878{
2879 char *cp, *env, *np;
2880 int len;
2881
2882 np = acpi_name(handle);
2883 if (*np == '\\')
2884 np++;
10f97674 2885 if ((env = kgetenv("debug.acpi.avoid")) == NULL)
5ed44076
MD
2886 return (0);
2887
2888 /* Scan the avoid list checking for a match */
2889 cp = env;
2890 for (;;) {
10f97674 2891 while (*cp != 0 && isspace(*cp))
5ed44076
MD
2892 cp++;
2893 if (*cp == 0)
2894 break;
2895 len = 0;
10f97674 2896 while (cp[len] != 0 && !isspace(cp[len]))
5ed44076
MD
2897 len++;
2898 if (!strncmp(cp, np, len)) {
728aa6ee 2899 kfreeenv(env);
5ed44076
MD
2900 return(1);
2901 }
2902 cp += len;
2903 }
728aa6ee 2904 kfreeenv(env);
5ed44076
MD
2905
2906 return (0);
2907}
2908
2909/*
10f97674 2910 * Debugging/bug-avoidance. Disable ACPI subsystem components.
5ed44076
MD
2911 */
2912int
2913acpi_disabled(char *subsys)
2914{
2915 char *cp, *env;
2916 int len;
2917
bc01a404 2918 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
5ed44076 2919 return (0);
f9d8cd12 2920 if (strcmp(env, "all") == 0) {
728aa6ee 2921 kfreeenv(env);
5ed44076
MD
2922 return (1);
2923 }
2924
f9d8cd12 2925 /* Scan the disable list, checking for a match. */
5ed44076
MD
2926 cp = env;
2927 for (;;) {
f9d8cd12 2928 while (*cp != '\0' && isspace(*cp))
5ed44076 2929 cp++;
f9d8cd12 2930 if (*cp == '\0')
5ed44076
MD
2931 break;
2932 len = 0;
f9d8cd12 2933 while (cp[len] != '\0' && !isspace(cp[len]))
5ed44076 2934 len++;
f9d8cd12 2935 if (strncmp(cp, subsys, len) == 0) {
728aa6ee 2936 kfreeenv(env);
5ed44076
MD
2937 return (1);
2938 }
2939 cp += len;
2940 }
728aa6ee 2941 kfreeenv(env);
5ed44076
MD
2942
2943 return (0);
2944}
2945
2946/*
2df6e324
MD
2947 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
2948 * components are enabled by default. The ones that are not have to be
2949 * enabled via debug.acpi.enabled.
2950 */
2951int
2952acpi_enabled(char *subsys)
2953{
10f97674
AP
2954 char *cp, *env;
2955 int len;
2df6e324 2956
bc01a404 2957 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
10f97674 2958 return (0);
2df6e324 2959 if (strcmp(env, "all") == 0) {
10f97674
AP
2960 kfreeenv(env);
2961 return (1);
2df6e324
MD
2962 }
2963
2964 /* Scan the enable list, checking for a match. */
2965 cp = env;
2966 for (;;) {
10f97674
AP
2967 while (*cp != '\0' && isspace(*cp))
2968 cp++;
2969 if (*cp == '\0')
2970 break;
2971 len = 0;
2972 while (cp[len] != '\0' && !isspace(cp[len]))
2973 len++;
2974 if (strncmp(cp, subsys, len) == 0) {
2975 kfreeenv(env);
2976 return (1);
2977 }
2978 cp += len;
2df6e324 2979 }
728aa6ee 2980 kfreeenv(env);
2df6e324
MD
2981
2982 return (0);
2983}
2984
2985/*
5ed44076
MD
2986 * Control interface.
2987 *
2988 * We multiplex ioctls for all participating ACPI devices here. Individual
2989 * drivers wanting to be accessible via /dev/acpi should use the
2990 * register/deregister interface to make their handlers visible.
2991 */
2992struct acpi_ioctl_hook
2993{
2994 TAILQ_ENTRY(acpi_ioctl_hook) link;
2995 u_long cmd;
2996 acpi_ioctl_fn fn;
2997 void *arg;
2998};
2999
3000static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3001static int acpi_ioctl_hooks_initted;
3002
5ed44076
MD
3003int
3004acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3005{
3006 struct acpi_ioctl_hook *hp;
3007
10f97674
AP
3008 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3009 return (ENOMEM);
5ed44076
MD
3010 hp->cmd = cmd;
3011 hp->fn = fn;
3012 hp->arg = arg;
10f97674
AP
3013
3014 ACPI_LOCK(acpi);
5ed44076
MD
3015 if (acpi_ioctl_hooks_initted == 0) {
3016 TAILQ_INIT(&acpi_ioctl_hooks);
3017 acpi_ioctl_hooks_initted = 1;
3018 }
3019 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
10f97674
AP
3020 ACPI_UNLOCK(acpi);
3021
5ed44076
MD
3022 return (0);
3023}
3024
10f97674 3025void
5ed44076
MD
3026acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3027{
3028 struct acpi_ioctl_hook *hp;
3029
10f97674 3030 ACPI_LOCK(acpi);
5ed44076 3031 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
10f97674 3032 if (hp->cmd == cmd && hp->fn == fn)
5ed44076
MD
3033 break;
3034
3035 if (hp != NULL) {
3036 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
efda3bd0 3037 kfree(hp, M_ACPIDEV);
5ed44076 3038 }
10f97674 3039 ACPI_UNLOCK(acpi);
5ed44076
MD
3040}
3041
3042static int
fef8985e 3043acpiopen(struct dev_open_args *ap)
5ed44076
MD
3044{
3045 return (0);
3046}
3047
3048static int
fef8985e 3049acpiclose(struct dev_close_args *ap)
5ed44076
MD
3050{
3051 return (0);
3052}
3053
3054static int
fef8985e 3055acpiioctl(struct dev_ioctl_args *ap)
5ed44076
MD
3056{
3057 struct acpi_softc *sc;
3058 struct acpi_ioctl_hook *hp;
10f97674 3059 int error, state;
5ed44076 3060
10f97674
AP
3061 error = 0;
3062 hp = NULL;
fef8985e 3063 sc = ap->a_head.a_dev->si_drv1;
5ed44076
MD
3064
3065 /*
3066 * Scan the list of registered ioctls, looking for handlers.
3067 */
10f97674
AP
3068 ACPI_LOCK(acpi);
3069 if (acpi_ioctl_hooks_initted)
5ed44076 3070 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
10f97674
AP
3071 if (hp->cmd == ap->a_cmd)
3072 break;
5ed44076 3073 }
10f97674
AP
3074 ACPI_UNLOCK(acpi);
3075 if (hp)
3076 return (hp->fn(ap->a_cmd, ap->a_data, hp->arg));
5ed44076
MD
3077
3078 /*
3079 * Core ioctls are not permitted for non-writable user.
3080 * Currently, other ioctls just fetch information.
3081 * Not changing system behavior.
3082 */
10f97674
AP
3083 if ((ap->a_fflag & FWRITE) == 0)
3084 return (EPERM);
5ed44076
MD
3085
3086 /* Core system ioctls. */
fef8985e 3087 switch (ap->a_cmd) {
10f97674
AP
3088 case ACPIIO_REQSLPSTATE:
3089 state = *(int *)ap->a_data;
3090 if (state != ACPI_STATE_S5)
3091 error = acpi_ReqSleepState(sc, state);
3092 else {
3093 kprintf("power off via acpi ioctl not supported\n");
5ed44076 3094 error = ENXIO;
10f97674 3095 }
5ed44076 3096 break;
10f97674 3097 case ACPIIO_ACKSLPSTATE:
ad32ecf2 3098 error = EOPNOTSUPP;
122df98f 3099#if 0 /* notyet */
10f97674
AP
3100 error = *(int *)ap->a_data;
3101 error = acpi_AckSleepState(sc->acpi_clone, error);
ad32ecf2 3102#endif
5ed44076 3103 break;
10f97674
AP
3104 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3105 error = EINVAL;
fef8985e 3106 state = *(int *)ap->a_data;
10f97674
AP
3107 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3108 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3109 error = 0;
5ed44076
MD
3110 break;
3111 default:
10f97674 3112 error = ENXIO;
5ed44076
MD
3113 break;
3114 }
5ed44076
MD
3115 return (error);
3116}
3117
3118static int
3119acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3120{
5ed44076 3121 int error;
10f97674 3122 struct sbuf sb;
5ed44076
MD
3123 UINT8 state, TypeA, TypeB;
3124
10f97674
AP
3125 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3126 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3127 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3128 sbuf_printf(&sb, "S%d ", state);
3129 sbuf_trim(&sb);
3130 sbuf_finish(&sb);
3131 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3132 sbuf_delete(&sb);
5ed44076
MD
3133 return (error);
3134}
3135
3136static int
3137acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3138{
3139 char sleep_state[10];
3140 int error;
3141 u_int new_state, old_state;
3142
3143 old_state = *(u_int *)oidp->oid_arg1;
10f97674
AP
3144 if (old_state > ACPI_S_STATES_MAX + 1)
3145 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3146 else
3147 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
5ed44076
MD
3148 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3149 if (error == 0 && req->newptr != NULL) {
3150 new_state = ACPI_STATE_S0;
10f97674
AP
3151 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3152 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
5ed44076 3153 break;
5ed44076
MD
3154 if (new_state <= ACPI_S_STATES_MAX + 1) {
3155 if (new_state != old_state)
3156 *(u_int *)oidp->oid_arg1 = new_state;
10f97674 3157 } else
5ed44076 3158 error = EINVAL;
5ed44076
MD
3159 }
3160
3161 return (error);
3162}
3163
3164/* Inform devctl(4) when we receive a Notify. */
3165void
3166acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3167{
3168 char notify_buf[16];
3169 ACPI_BUFFER handle_buf;
3170 ACPI_STATUS status;
3171
3172 if (subsystem == NULL)
3173 return;
3174
3175 handle_buf.Pointer = NULL;
3176 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3177 status = AcpiNsHandleToPathname(h, &handle_buf);
3178 if (ACPI_FAILURE(status))
3179 return;
f8c7a42d 3180 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
5ed44076 3181 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
5ed44076
MD
3182 AcpiOsFree(handle_buf.Pointer);
3183}
3184
3185#ifdef ACPI_DEBUG
3186/*
3187 * Support for parsing debug options from the kernel environment.
3188 *
3189 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3190 * by specifying the names of the bits in the debug.acpi.layer and
3191 * debug.acpi.level environment variables. Bits may be unset by
3192 * prefixing the bit name with !.
3193 */
3194struct debugtag
3195{
3196 char *name;
3197 UINT32 value;
3198};
3199
3200static struct debugtag dbg_layer[] = {
3201 {"ACPI_UTILITIES", ACPI_UTILITIES},
3202 {"ACPI_HARDWARE", ACPI_HARDWARE},
3203 {"ACPI_EVENTS", ACPI_EVENTS},
3204 {"ACPI_TABLES", ACPI_TABLES},
3205 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3206 {"ACPI_PARSER", ACPI_PARSER},
3207 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3208 {"ACPI_EXECUTER", ACPI_EXECUTER},
3209 {"ACPI_RESOURCES", ACPI_RESOURCES},
3210 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3211 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3212 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3213 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3214
5ed44076
MD
3215 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3216 {"ACPI_BATTERY", ACPI_BATTERY},
f9d8cd12 3217 {"ACPI_BUS", ACPI_BUS},
5ed44076 3218 {"ACPI_BUTTON", ACPI_BUTTON},
f9d8cd12
MD
3219 {"ACPI_EC", ACPI_EC},
3220 {"ACPI_FAN", ACPI_FAN},
3221 {"ACPI_POWERRES", ACPI_POWERRES},
5ed44076
MD
3222 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3223 {"ACPI_THERMAL", ACPI_THERMAL},
f9d8cd12 3224 {"ACPI_TIMER", ACPI_TIMER},
5ed44076
MD
3225 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3226 {NULL, 0}
3227};
3228
3229static struct debugtag dbg_level[] = {
5ed44076
MD
3230 {"ACPI_LV_INIT", ACPI_LV_INIT},
3231 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3232 {"ACPI_LV_INFO", ACPI_LV_INFO},
3233 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3234
3235 /* Trace verbosity level 1 [Standard Trace Level] */
3236 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3237 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3238 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3239 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3240 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3241 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3242 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3243 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3244 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3245 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3246 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3247 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3248 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3249 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3250 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3251
3252 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3253 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3254 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3255 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3256 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3257 {"ACPI_LV_ALL", ACPI_LV_ALL},
3258
3259 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3260 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3261 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3262 {"ACPI_LV_IO", ACPI_LV_IO},
3263 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3264 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3265
3266 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3267 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3268 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3269 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3270 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3271 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3272 {NULL, 0}
3273};
3274
3275static void
3276acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3277{
3278 char *ep;
3279 int i, l;
3280 int set;
3281
3282 while (*cp) {
3283 if (isspace(*cp)) {
3284 cp++;
3285 continue;
3286 }
3287 ep = cp;
3288 while (*ep && !isspace(*ep))
3289 ep++;
3290 if (*cp == '!') {
3291 set = 0;
3292 cp++;
3293 if (cp == ep)
3294 continue;
3295 } else {
3296 set = 1;
3297 }
3298 l = ep - cp;
3299 for (i = 0; tag[i].name != NULL; i++) {
3300 if (!strncmp(cp, tag[i].name, l)) {
3301 if (set)
3302 *flag |= tag[i].value;
3303 else
3304 *flag &= ~tag[i].value;
5ed44076
MD
3305 }
3306 }
3307 cp = ep;
3308 }
3309}
3310
3311static void
3312acpi_set_debugging(void *junk)
3313{
10f97674 3314 char *layer, *level;
5ed44076
MD
3315
3316 if (cold) {
3317 AcpiDbgLayer = 0;
3318 AcpiDbgLevel = 0;
3319 }
3320
bc01a404
MD
3321 layer = kgetenv("debug.acpi.layer");
3322 level = kgetenv("debug.acpi.level");
f9d8cd12
MD
3323 if (layer == NULL && level == NULL)
3324 return;
5ed44076 3325
e3869ec7 3326 kprintf("ACPI set debug");
f9d8cd12
MD
3327 if (layer != NULL) {
3328 if (strcmp("NONE", layer) != 0)
e3869ec7 3329 kprintf(" layer '%s'", layer);
f9d8cd12 3330 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
728aa6ee 3331 kfreeenv(layer);
f9d8cd12
MD
3332 }
3333 if (level != NULL) {
3334 if (strcmp("NONE", level) != 0)
e3869ec7 3335 kprintf(" level '%s'", level);
f9d8cd12 3336 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
728aa6ee 3337 kfreeenv(level);
5ed44076 3338 }
e3869ec7 3339 kprintf("\n");
5ed44076 3340}
10f97674
AP
3341
3342SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3343 NULL);
5ed44076
MD
3344
3345static int
3346acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3347{
3348 int error, *dbg;
3349 struct debugtag *tag;
3350 struct sbuf sb;
3351
3352 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3353 return (ENOMEM);
3354 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3355 tag = &dbg_layer[0];
3356 dbg = &AcpiDbgLayer;
3357 } else {
3358 tag = &dbg_level[0];
3359 dbg = &AcpiDbgLevel;
3360 }
3361
3362 /* Get old values if this is a get request. */
10f97674 3363 ACPI_SERIAL_BEGIN(acpi);
5ed44076
MD
3364 if (*dbg == 0) {
3365 sbuf_cpy(&sb, "NONE");
3366 } else if (req->newptr == NULL) {
3367 for (; tag->name != NULL; tag++) {
3368 if ((*dbg & tag->value) == tag->value)
3369 sbuf_printf(&sb, "%s ", tag->name);
3370 }
3371 }
3372 sbuf_trim(&sb);
3373 sbuf_finish(&sb);
3374
f9d8cd12
MD
3375 /* Copy out the old values to the user. */
3376 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
5ed44076
MD
3377 sbuf_delete(&sb);
3378
3379 /* If the user is setting a string, parse it. */
3380 if (error == 0 && req->newptr != NULL) {
3381 *dbg = 0;
2382383b 3382 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr);
5ed44076
MD
3383 acpi_set_debugging(NULL);
3384 }
10f97674 3385 ACPI_SERIAL_END(acpi);
5ed44076
MD
3386
3387 return (error);
3388}
10f97674 3389
5ed44076
MD
3390SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3391 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3392SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3393 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
10f97674 3394#endif /* ACPI_DEBUG */
5ed44076
MD
3395
3396static int
3397acpi_pm_func(u_long cmd, void *arg, ...)
3398{
3399 int state, acpi_state;
3400 int error;
3401 struct acpi_softc *sc;
3402 va_list ap;
3403
3404 error = 0;
3405 switch (cmd) {
3406 case POWER_CMD_SUSPEND:
3407 sc = (struct acpi_softc *)arg;
3408 if (sc == NULL) {
3409 error = EINVAL;
3410 goto out;
3411 }
3412
3413 va_start(ap, arg);
3414 state = va_arg(ap, int);
10f97674 3415 va_end(ap);
5ed44076
MD
3416
3417 switch (state) {
3418 case POWER_SLEEP_STATE_STANDBY:
3419 acpi_state = sc->acpi_standby_sx;
3420 break;
3421 case POWER_SLEEP_STATE_SUSPEND:
3422 acpi_state = sc->acpi_suspend_sx;
3423 break;
3424 case POWER_SLEEP_STATE_HIBERNATE:
3425 acpi_state = ACPI_STATE_S4;
3426 break;
3427 default:
3428 error = EINVAL;
3429 goto out;
3430 }
3431
10f97674
AP
3432 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3433 error = ENXIO;
5ed44076
MD
3434 break;
3435 default:
3436 error = EINVAL;
3437 goto out;
3438 }
3439
3440out:
3441 return (error);
3442}
3443
3444static void
3445acpi_pm_register(void *arg)
3446{
3447 if (!cold || resource_disabled("acpi", 0))
3448 return;
3449
3450 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3451}
3452
ba39e2e0 3453SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);