1 /*-
2 * Copyright (c) 2000 Takanori Watanabe <takawata@jp.kfreebsd.org>
3 * Copyright (c) 2000 Mitsuru IWASAKI <iwasaki@jp.kfreebsd.org>
4 * Copyright (c) 2000, 2001 Michael Smith
5 * Copyright (c) 2000 BSDi
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: src/sys/dev/acpica/acpi.c,v 1.243.2.4.4.1 2009/04/15 03:14:26 kensmith Exp $
30 */
31
32 #include "opt_acpi.h"
33 #include <sys/param.h>
34 #include <sys/kernel.h>
35 #include <sys/proc.h>
36 #include <sys/fcntl.h>
37 #include <sys/malloc.h>
38 #include <sys/module.h>
39 #include <sys/bus.h>
40 #include <sys/conf.h>
41 #include <sys/reboot.h>
42 #include <sys/sysctl.h>
43 #include <sys/ctype.h>
44 #include <sys/linker.h>
45 #include <sys/power.h>
46 #include <sys/sbuf.h>
47 #include <sys/device.h>
48 #include <sys/spinlock.h>
49 #include <sys/spinlock2.h>
50 #include <sys/uuid.h>
51
52 #include <sys/rman.h>
53 #include <bus/isa/isavar.h>
54 #include <bus/isa/pnpvar.h>
55
56 #include "acpi.h"
57 #include <dev/acpica/acpivar.h>
58 #include <dev/acpica/acpiio.h>
59 #include <dev/acpica/acpiio_mcall.h>
60 #include "achware.h"
61 #include "acnamesp.h"
62 #include "acglobal.h"
63
64 #include "pci_if.h"
65 #include <bus/pci/pci_cfgreg.h>
66 #include <bus/pci/pcivar.h>
67 #include <bus/pci/pci_private.h>
68
69 #include <vm/vm_param.h>
70
71 MALLOC_DEFINE(M_ACPIDEV, "acpidev", "ACPI devices");
72
73 /* Hooks for the ACPICA debugging infrastructure */
74 #define _COMPONENT ACPI_BUS
75 ACPI_MODULE_NAME("ACPI");
76
77 static d_open_t acpiopen;
78 static d_close_t acpiclose;
79 static d_ioctl_t acpiioctl;
80
81 static struct dev_ops acpi_ops = {
82 { "acpi", 0, D_MPSAFE },
83 .d_open = acpiopen,
84 .d_close = acpiclose,
85 .d_ioctl = acpiioctl
86 };
87
88 struct acpi_interface {
89 ACPI_STRING *data;
90 int num;
91 };
92
93 /* Global mutex for locking access to the ACPI subsystem. */
94 struct lock acpi_lock;
95 struct lwkt_token acpi_token = LWKT_TOKEN_INITIALIZER(acpi_token);
96
97 /* Bitmap of device quirks. */
98 int acpi_quirks;
99
100 static int acpi_modevent(struct module *mod, int event, void *junk);
101 static void acpi_identify(driver_t *driver, device_t parent);
102 static int acpi_probe(device_t dev);
103 static int acpi_attach(device_t dev);
104 static int acpi_suspend(device_t dev);
105 static int acpi_resume(device_t dev);
106 static int acpi_shutdown(device_t dev);
107 static device_t acpi_add_child(device_t bus, device_t parent, int order, const char *name,
108 int unit);
109 static int acpi_print_child(device_t bus, device_t child);
110 static void acpi_probe_nomatch(device_t bus, device_t child);
111 static void acpi_driver_added(device_t dev, driver_t *driver);
112 static int acpi_read_ivar(device_t dev, device_t child, int index,
113 uintptr_t *result);
114 static int acpi_write_ivar(device_t dev, device_t child, int index,
115 uintptr_t value);
116 static struct resource_list *acpi_get_rlist(device_t dev, device_t child);
117 static int acpi_sysres_alloc(device_t dev);
118 static struct resource *acpi_alloc_resource(device_t bus, device_t child,
119 int type, int *rid, u_long start, u_long end,
120 u_long count, u_int flags, int cpuid);
121 static int acpi_release_resource(device_t bus, device_t child, int type,
122 int rid, struct resource *r);
123 static void acpi_delete_resource(device_t bus, device_t child, int type,
124 int rid);
125 static uint32_t acpi_isa_get_logicalid(device_t dev);
126 static int acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count);
127 static char *acpi_device_id_probe(device_t bus, device_t dev, char **ids);
128 static ACPI_STATUS acpi_device_eval_obj(device_t bus, device_t dev,
129 ACPI_STRING pathname, ACPI_OBJECT_LIST *parameters,
130 ACPI_BUFFER *ret);
131 static int acpi_device_pwr_for_sleep(device_t bus, device_t dev,
132 int *dstate);
133 static ACPI_STATUS acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level,
134 void *context, void **retval);
135 static ACPI_STATUS acpi_device_scan_children(device_t bus, device_t dev,
136 int max_depth, acpi_scan_cb_t user_fn, void *arg);
137 static int acpi_set_powerstate_method(device_t bus, device_t child,
138 int state);
139 static int acpi_isa_pnp_probe(device_t bus, device_t child,
140 struct isa_pnp_id *ids);
141 static void acpi_probe_children(device_t bus);
142 static void acpi_probe_order(ACPI_HANDLE handle, int *order);
143 static void acpi_disable_not_present(device_t child);
144 static void acpi_reprobe_children(device_t bus, device_t *children,
145 int cnt);
146 static ACPI_STATUS acpi_probe_child(ACPI_HANDLE handle, UINT32 level,
147 void *context, void **status);
148 static ACPI_STATUS acpi_EnterSleepState(struct acpi_softc *sc, int state);
149 static void acpi_shutdown_final(void *arg, int howto);
150 static void acpi_enable_fixed_events(struct acpi_softc *sc);
151 static int acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate);
152 static int acpi_wake_run_prep(ACPI_HANDLE handle, int sstate);
153 static int acpi_wake_prep_walk(int sstate);
154 static int acpi_wake_sysctl_walk(device_t dev);
155 #ifdef notyet
156 static int acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS);
157 #endif
158 static void acpi_system_eventhandler_sleep(void *arg, int state);
159 static void acpi_system_eventhandler_wakeup(void *arg, int state);
160 static int acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
161 static int acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS);
162 static int acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS);
163 static int acpi_pm_func(u_long cmd, void *arg, ...);
164 static int acpi_child_location_str_method(device_t acdev, device_t child,
165 char *buf, size_t buflen);
166 static int acpi_child_pnpinfo_str_method(device_t acdev, device_t child,
167 char *buf, size_t buflen);
168 static void acpi_enable_pcie(void);
169 static void acpi_reset_interfaces(device_t dev);
170 static void acpi_call_fixup_pointers(ACPI_OBJECT *p, UINT8 *orig);
171 static int acpi_call_ioctl(caddr_t addr);
172 static ACPI_OBJECT_LIST *acpi_copyin_object_list(ACPI_OBJECT_LIST *src);
173 static void acpi_free_object_list(ACPI_OBJECT_LIST *list);
174
175 static device_method_t acpi_methods[] = {
176 /* Device interface */
177 DEVMETHOD(device_identify, acpi_identify),
178 DEVMETHOD(device_probe, acpi_probe),
179 DEVMETHOD(device_attach, acpi_attach),
180 DEVMETHOD(device_shutdown, acpi_shutdown),
181 DEVMETHOD(device_detach, bus_generic_detach),
182 DEVMETHOD(device_suspend, acpi_suspend),
183 DEVMETHOD(device_resume, acpi_resume),
184
185 /* Bus interface */
186 DEVMETHOD(bus_add_child, acpi_add_child),
187 DEVMETHOD(bus_print_child, acpi_print_child),
188 DEVMETHOD(bus_probe_nomatch, acpi_probe_nomatch),
189 DEVMETHOD(bus_driver_added, acpi_driver_added),
190 DEVMETHOD(bus_read_ivar, acpi_read_ivar),
191 DEVMETHOD(bus_write_ivar, acpi_write_ivar),
192 DEVMETHOD(bus_get_resource_list, acpi_get_rlist),
193 DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
194 DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
195 DEVMETHOD(bus_alloc_resource, acpi_alloc_resource),
196 DEVMETHOD(bus_release_resource, acpi_release_resource),
197 DEVMETHOD(bus_delete_resource, acpi_delete_resource),
198 DEVMETHOD(bus_child_pnpinfo_str, acpi_child_pnpinfo_str_method),
199 DEVMETHOD(bus_child_location_str, acpi_child_location_str_method),
200 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
201 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
202 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
203 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
204
205 /* ACPI bus */
206 DEVMETHOD(acpi_id_probe, acpi_device_id_probe),
207 DEVMETHOD(acpi_evaluate_object, acpi_device_eval_obj),
208 DEVMETHOD(acpi_pwr_for_sleep, acpi_device_pwr_for_sleep),
209 DEVMETHOD(acpi_scan_children, acpi_device_scan_children),
210
211 /* PCI emulation */
212 DEVMETHOD(pci_set_powerstate, acpi_set_powerstate_method),
213
214 /* ISA emulation */
215 DEVMETHOD(isa_pnp_probe, acpi_isa_pnp_probe),
216
217 DEVMETHOD_END
218 };
219
220 static driver_t acpi_driver = {
221 "acpi",
222 acpi_methods,
223 sizeof(struct acpi_softc),
224 .gpri = KOBJ_GPRI_ACPI+2
225 };
226
227 static devclass_t acpi_devclass;
228 DRIVER_MODULE(acpi, nexus, acpi_driver, acpi_devclass, acpi_modevent, NULL);
229 MODULE_VERSION(acpi, 1);
230
231 ACPI_SERIAL_DECL(acpi, "ACPI serializer");
232
233 /* Local pools for managing system resources for ACPI child devices. */
234 static struct rman acpi_rman_io, acpi_rman_mem;
235
236 #define ACPI_MINIMUM_AWAKETIME 5
237
238 static const char* sleep_state_names[] = {
239 "S0", "S1", "S2", "S3", "S4", "S5", "NONE"};
240
241 SYSCTL_NODE(_debug, OID_AUTO, acpi, CTLFLAG_RD, NULL, "ACPI debugging");
242 static char acpi_ca_version[12];
243 SYSCTL_STRING(_debug_acpi, OID_AUTO, acpi_ca_version, CTLFLAG_RD,
244 acpi_ca_version, 0, "Version of Intel ACPICA");
245
246 /*
247 * Allow overriding _OSI methods.
248 */
249 static char acpi_install_interface[256];
250 TUNABLE_STR("hw.acpi.install_interface", acpi_install_interface,
251 sizeof(acpi_install_interface));
252 static char acpi_remove_interface[256];
253 TUNABLE_STR("hw.acpi.remove_interface", acpi_remove_interface,
254 sizeof(acpi_remove_interface));
255
256 /*
257 * Use this tunable to disable the control method auto-serialization
258 * mechanism that was added in 20140214 and superseded the previous
259 * AcpiGbl_SerializeAllMethods global.
260 */
261 static int acpi_auto_serialize_methods = 1;
262 TUNABLE_INT("hw.acpi.auto_serialize_methods", &acpi_auto_serialize_methods);
263
264 /* Allow users to dump Debug objects without ACPI debugger. */
265 static int acpi_debug_objects;
266 TUNABLE_INT("debug.acpi.enable_debug_objects", &acpi_debug_objects);
267 SYSCTL_PROC(_debug_acpi, OID_AUTO, enable_debug_objects,
268 CTLFLAG_RW | CTLTYPE_INT, NULL, 0, acpi_debug_objects_sysctl, "I",
269 "Enable Debug objects.");
270
271 /* Allow ignoring the XSDT. */
272 static int acpi_ignore_xsdt;
273 TUNABLE_INT("debug.acpi.ignore_xsdt", &acpi_ignore_xsdt);
274 SYSCTL_INT(_debug_acpi, OID_AUTO, ignore_xsdt, CTLFLAG_RD,
275 &acpi_ignore_xsdt, 1, "Ignore the XSDT, forcing the use of the RSDT.");
276
277 /* Allow the interpreter to ignore common mistakes in BIOS. */
278 static int acpi_interpreter_slack = 1;
279 TUNABLE_INT("debug.acpi.interpreter_slack", &acpi_interpreter_slack);
280 SYSCTL_INT(_debug_acpi, OID_AUTO, interpreter_slack, CTLFLAG_RD,
281 &acpi_interpreter_slack, 1, "Turn on interpreter slack mode.");
282
283 /* Allow preferring 32-bit FADT register addresses over the 64-bit ones. */
284 static int acpi_fadt_addr32;
285 TUNABLE_INT("debug.acpi.fadt_addr32", &acpi_fadt_addr32);
286 SYSCTL_INT(_debug_acpi, OID_AUTO, fadt_addr32, CTLFLAG_RD,
287 &acpi_fadt_addr32, 1,
288 "Prefer 32-bit FADT register addresses over 64-bit ones.");
289
290 /* Prefer 32-bit FACS table addresses over the 64-bit ones. */
291 static int acpi_facs_addr32 = 1;
292 TUNABLE_INT("debug.acpi.facs_addr32", &acpi_facs_addr32);
293 SYSCTL_INT(_debug_acpi, OID_AUTO, facs_addr32, CTLFLAG_RD,
294 &acpi_facs_addr32, 1,
295 "Prefer 32-bit FACS table addresses over 64-bit ones.");
296
297 /* Power devices off and on in suspend and resume. XXX Remove once tested. */
298 static int acpi_do_powerstate = 1;
299 TUNABLE_INT("debug.acpi.do_powerstate", &acpi_do_powerstate);
300 SYSCTL_INT(_debug_acpi, OID_AUTO, do_powerstate, CTLFLAG_RW,
301 &acpi_do_powerstate, 1, "Turn off devices when suspending.");
302
303 /* Allow users to override quirks. */
304 TUNABLE_INT("debug.acpi.quirks", &acpi_quirks);
305
306 /* Allow to call ACPI methods from userland. */
307 static int acpi_allow_mcall;
308 TUNABLE_INT("debug.acpi.allow_method_calls", &acpi_allow_mcall);
309
310 static int acpi_susp_bounce;
311 SYSCTL_INT(_debug_acpi, OID_AUTO, suspend_bounce, CTLFLAG_RW,
312 &acpi_susp_bounce, 0, "Don't actually suspend, just test devices.");
313
314 /*
315 * ACPI can only be loaded as a module by the loader; activating it after
316 * system bootstrap time is not useful, and can be fatal to the system.
317 * It also cannot be unloaded, since the entire system bus heirarchy hangs
318 * off it.
319 */
320 static int
acpi_modevent(struct module * mod,int event,void * junk)321 acpi_modevent(struct module *mod, int event, void *junk)
322 {
323 switch (event) {
324 case MOD_LOAD:
325 if (!cold) {
326 kprintf("The ACPI driver cannot be loaded after boot.\n");
327 return (EPERM);
328 }
329 break;
330 case MOD_UNLOAD:
331 if (!cold && power_pm_get_type() == POWER_PM_TYPE_ACPI)
332 return (EBUSY);
333 break;
334 default:
335 break;
336 }
337 return (0);
338 }
339
340 /*
341 * Perform early initialization.
342 */
343 ACPI_STATUS
acpi_Startup(void)344 acpi_Startup(void)
345 {
346 static int started = 0;
347 ACPI_STATUS status;
348 int val;
349
350 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
351
352 /* Only run the startup code once. The MADT driver also calls this. */
353 if (started)
354 return_VALUE (AE_OK);
355 started = 1;
356
357 /* Start up the ACPICA subsystem. */
358 status = AcpiInitializeSubsystem();
359 if (ACPI_FAILURE(status)) {
360 kprintf("ACPI: Subsystem initialization failed: %s\n",
361 AcpiFormatException(status));
362 return_VALUE (status);
363 }
364
365 /*
366 * Pre-allocate space for RSDT/XSDT and DSDT tables and allow resizing
367 * if more tables exist.
368 */
369 if (ACPI_FAILURE(status = AcpiInitializeTables(NULL, 2, TRUE))) {
370 kprintf("ACPI: Table initialization failed: %s\n",
371 AcpiFormatException(status));
372 return_VALUE (status);
373 }
374
375 /* Set up any quirks we have for this system. */
376 if (acpi_quirks == ACPI_Q_OK)
377 acpi_table_quirks(&acpi_quirks);
378
379 /* If the user manually set the disabled hint to 0, force-enable ACPI. */
380 if (resource_int_value("acpi", 0, "disabled", &val) == 0 && val == 0)
381 acpi_quirks &= ~ACPI_Q_BROKEN;
382 if (acpi_quirks & ACPI_Q_BROKEN) {
383 kprintf("ACPI disabled by blacklist. Contact your BIOS vendor.\n");
384 status = AE_SUPPORT;
385 }
386
387 return_VALUE (status);
388 }
389
390 /*
391 * Detect ACPI, perform early initialisation
392 */
393 static void
acpi_identify(driver_t * driver,device_t parent)394 acpi_identify(driver_t *driver, device_t parent)
395 {
396 device_t child;
397
398 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
399
400 if (!cold)
401 return_VOID;
402
403 /* Check that we haven't been disabled with a hint. */
404 if (resource_disabled("acpi", 0))
405 return_VOID;
406
407 /* Make sure we're not being doubly invoked. */
408 if (device_find_child(parent, "acpi", 0) != NULL)
409 return_VOID;
410
411 ksnprintf(acpi_ca_version, sizeof(acpi_ca_version), "%x", ACPI_CA_VERSION);
412
413 /* Initialize root tables. */
414 if (ACPI_FAILURE(acpi_Startup())) {
415 kprintf("ACPI: Try disabling either ACPI or apic support.\n");
416 return_VOID;
417 }
418
419 /* Attach the actual ACPI device. */
420 if ((child = BUS_ADD_CHILD(parent, parent, 10, "acpi", 0)) == NULL) {
421 device_printf(parent, "device_identify failed\n");
422 return_VOID;
423 }
424 }
425
426 /*
427 * Fetch some descriptive data from ACPI to put in our attach message.
428 */
429 static int
acpi_probe(device_t dev)430 acpi_probe(device_t dev)
431 {
432 ACPI_TABLE_RSDP *rsdp;
433 ACPI_TABLE_HEADER *rsdt;
434 ACPI_PHYSICAL_ADDRESS paddr;
435 char buf[ACPI_OEM_ID_SIZE + ACPI_OEM_TABLE_ID_SIZE + 2];
436 struct sbuf sb;
437
438 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
439
440 if (power_pm_get_type() != POWER_PM_TYPE_NONE &&
441 power_pm_get_type() != POWER_PM_TYPE_ACPI) {
442 device_printf(dev, "probe failed, other PM system enabled.\n");
443 return_VALUE (ENXIO);
444 }
445
446 if ((paddr = AcpiOsGetRootPointer()) == 0 ||
447 (rsdp = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_RSDP))) == NULL)
448 return_VALUE (ENXIO);
449 if (acpi_ignore_xsdt == 0 &&
450 rsdp->Revision > 1 && rsdp->XsdtPhysicalAddress != 0)
451 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->XsdtPhysicalAddress;
452 else
453 paddr = (ACPI_PHYSICAL_ADDRESS)rsdp->RsdtPhysicalAddress;
454 AcpiOsUnmapMemory(rsdp, sizeof(ACPI_TABLE_RSDP));
455
456 if ((rsdt = AcpiOsMapMemory(paddr, sizeof(ACPI_TABLE_HEADER))) == NULL)
457 return_VALUE (ENXIO);
458 sbuf_new(&sb, buf, sizeof(buf), SBUF_FIXEDLEN);
459 sbuf_bcat(&sb, rsdt->OemId, ACPI_OEM_ID_SIZE);
460 sbuf_trim(&sb);
461 sbuf_putc(&sb, ' ');
462 sbuf_bcat(&sb, rsdt->OemTableId, ACPI_OEM_TABLE_ID_SIZE);
463 sbuf_trim(&sb);
464 sbuf_finish(&sb);
465 device_set_desc_copy(dev, sbuf_data(&sb));
466 sbuf_delete(&sb);
467 AcpiOsUnmapMemory(rsdt, sizeof(ACPI_TABLE_HEADER));
468
469 return_VALUE (0);
470 }
471
472 static int
acpi_attach(device_t dev)473 acpi_attach(device_t dev)
474 {
475 struct acpi_softc *sc;
476 ACPI_STATUS status;
477 int error, state;
478 UINT32 flags;
479 UINT8 TypeA, TypeB;
480 char *env;
481
482 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
483
484 sc = device_get_softc(dev);
485 sc->acpi_dev = dev;
486 callout_init(&sc->susp_force_to);
487
488 if ((error = acpi_task_thread_init())) {
489 device_printf(dev, "Could not start task thread.\n");
490 goto out2;
491 }
492
493 error = ENXIO;
494
495 /* Initialize resource manager. */
496 acpi_rman_io.rm_type = RMAN_ARRAY;
497 acpi_rman_io.rm_start = 0;
498 acpi_rman_io.rm_end = 0xffff;
499 acpi_rman_io.rm_descr = "ACPI I/O ports";
500 if (rman_init(&acpi_rman_io, -1) != 0)
501 panic("acpi rman_init IO ports failed");
502 acpi_rman_mem.rm_type = RMAN_ARRAY;
503 acpi_rman_mem.rm_start = 0;
504 acpi_rman_mem.rm_end = ~0ul;
505 acpi_rman_mem.rm_descr = "ACPI I/O memory addresses";
506 if (rman_init(&acpi_rman_mem, -1) != 0)
507 panic("acpi rman_init memory failed");
508
509 /* Initialise the ACPI mutex */
510 ACPI_LOCK_INIT(acpi, "acpi");
511 ACPI_SERIAL_INIT(acpi);
512
513 ACPI_LOCK(acpi);
514
515 /*
516 * Set the globals from our tunables. This is needed because ACPICA
517 * uses UINT8 for some values and we have no tunable_byte.
518 */
519 AcpiGbl_AutoSerializeMethods = acpi_auto_serialize_methods ? TRUE : FALSE;
520 AcpiGbl_DoNotUseXsdt = acpi_ignore_xsdt ? TRUE : FALSE;
521 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
522 AcpiGbl_EnableInterpreterSlack = acpi_interpreter_slack ? TRUE : FALSE;
523 AcpiGbl_Use32BitFadtAddresses = acpi_fadt_addr32 ? TRUE : FALSE;
524 AcpiGbl_Use32BitFacsAddresses = acpi_facs_addr32 ? TRUE : FALSE;
525
526 #ifndef ACPI_DEBUG
527 /*
528 * Disable Debug Object output.
529 */
530 AcpiDbgLevel &= ~ACPI_LV_DEBUG_OBJECT;
531 #endif
532
533 /* Override OS interfaces if the user requested. */
534 acpi_reset_interfaces(dev);
535
536 /* Load ACPI name space. */
537 status = AcpiLoadTables();
538 if (ACPI_FAILURE(status)) {
539 device_printf(dev, "Could not load Namespace: %s\n",
540 AcpiFormatException(status));
541 goto out;
542 }
543
544 /* Handle MCFG table if present. */
545 acpi_enable_pcie();
546
547 /*
548 * Note that some systems (specifically, those with namespace evaluation
549 * issues that require the avoidance of parts of the namespace) must
550 * avoid running _INI and _STA on everything, as well as dodging the final
551 * object init pass.
552 *
553 * For these devices, we set ACPI_NO_DEVICE_INIT and ACPI_NO_OBJECT_INIT).
554 *
555 * XXX We should arrange for the object init pass after we have attached
556 * all our child devices, but on many systems it works here.
557 */
558 flags = ACPI_FULL_INITIALIZATION;
559 if (ktestenv("debug.acpi.avoid"))
560 flags = ACPI_NO_DEVICE_INIT | ACPI_NO_OBJECT_INIT;
561
562 /* Bring the hardware and basic handlers online. */
563 if (ACPI_FAILURE(status = AcpiEnableSubsystem(flags))) {
564 device_printf(dev, "Could not enable ACPI: %s\n",
565 AcpiFormatException(status));
566 goto out;
567 }
568
569 /*
570 * Fix up the interrupt timer after enabling ACPI, so that the
571 * interrupt cputimer that choked by ACPI power management could
572 * be resurrected before probing various devices.
573 */
574 DELAY(5000);
575 cputimer_intr_pmfixup();
576
577 /*
578 * Call the ECDT probe function to provide EC functionality before
579 * the namespace has been evaluated.
580 *
581 * XXX This happens before the sysresource devices have been probed and
582 * attached so its resources come from nexus0. In practice, this isn't
583 * a problem but should be addressed eventually.
584 */
585 acpi_ec_ecdt_probe(dev);
586
587 /* Bring device objects and regions online. */
588 if (ACPI_FAILURE(status = AcpiInitializeObjects(flags))) {
589 device_printf(dev, "Could not initialize ACPI objects: %s\n",
590 AcpiFormatException(status));
591 goto out;
592 }
593
594 /*
595 * Setup our sysctl tree.
596 *
597 * XXX: This doesn't check to make sure that none of these fail.
598 */
599 sysctl_ctx_init(&sc->acpi_sysctl_ctx);
600 sc->acpi_sysctl_tree = SYSCTL_ADD_NODE(&sc->acpi_sysctl_ctx,
601 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
602 device_get_name(dev), CTLFLAG_RD, 0, "");
603 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
604 OID_AUTO, "supported_sleep_state", CTLTYPE_STRING | CTLFLAG_RD,
605 0, 0, acpi_supported_sleep_state_sysctl, "A", "");
606 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
607 OID_AUTO, "power_button_state", CTLTYPE_STRING | CTLFLAG_RW,
608 &sc->acpi_power_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
609 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
610 OID_AUTO, "sleep_button_state", CTLTYPE_STRING | CTLFLAG_RW,
611 &sc->acpi_sleep_button_sx, 0, acpi_sleep_state_sysctl, "A", "");
612 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
613 OID_AUTO, "lid_switch_state", CTLTYPE_STRING | CTLFLAG_RW,
614 &sc->acpi_lid_switch_sx, 0, acpi_sleep_state_sysctl, "A", "");
615 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
616 OID_AUTO, "standby_state", CTLTYPE_STRING | CTLFLAG_RW,
617 &sc->acpi_standby_sx, 0, acpi_sleep_state_sysctl, "A", "");
618 SYSCTL_ADD_PROC(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
619 OID_AUTO, "suspend_state", CTLTYPE_STRING | CTLFLAG_RW,
620 &sc->acpi_suspend_sx, 0, acpi_sleep_state_sysctl, "A", "");
621 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
622 OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
623 "sleep delay");
624 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
625 OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0, "S4BIOS mode");
626 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
627 OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
628 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
629 OID_AUTO, "disable_on_reboot", CTLFLAG_RW,
630 &sc->acpi_do_disable, 0, "Disable ACPI when rebooting/halting system");
631 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
632 OID_AUTO, "handle_reboot", CTLFLAG_RW,
633 &sc->acpi_handle_reboot, 0, "Use ACPI Reset Register to reboot");
634
635 /*
636 * Default to 1 second before sleeping to give some machines time to
637 * stabilize.
638 */
639 sc->acpi_sleep_delay = 1;
640 if (bootverbose)
641 sc->acpi_verbose = 1;
642 if ((env = kgetenv("hw.acpi.verbose")) != NULL) {
643 if (strcmp(env, "0") != 0)
644 sc->acpi_verbose = 1;
645 kfreeenv(env);
646 }
647
648 /* Only enable reboot by default if the FADT says it is available. */
649 if (AcpiGbl_FADT.Flags & ACPI_FADT_RESET_REGISTER)
650 sc->acpi_handle_reboot = 1;
651
652 /* Only enable S4BIOS by default if the FACS says it is available. */
653 if (AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
654 sc->acpi_s4bios = 1;
655
656 /*
657 * Dispatch the default sleep state to devices. The lid switch is set
658 * to NONE by default to avoid surprising users.
659 */
660 sc->acpi_power_button_sx = ACPI_STATE_S5;
661 sc->acpi_lid_switch_sx = ACPI_S_STATES_MAX + 1;
662 sc->acpi_standby_sx = ACPI_STATE_S1;
663 sc->acpi_suspend_sx = ACPI_STATE_S3;
664
665 /* Pick the first valid sleep state for the sleep button default. */
666 sc->acpi_sleep_button_sx = ACPI_S_STATES_MAX + 1;
667 for (state = ACPI_STATE_S1; state <= ACPI_STATE_S4; state++)
668 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB))) {
669 sc->acpi_sleep_button_sx = state;
670 break;
671 }
672
673 acpi_enable_fixed_events(sc);
674
675 /*
676 * Scan the namespace and attach/initialise children.
677 */
678
679 /* Register our shutdown handler. */
680 EVENTHANDLER_REGISTER(shutdown_final, acpi_shutdown_final, sc,
681 SHUTDOWN_PRI_LAST);
682
683 /*
684 * Register our acpi event handlers.
685 * XXX should be configurable eg. via userland policy manager.
686 */
687 EVENTHANDLER_REGISTER(acpi_sleep_event, acpi_system_eventhandler_sleep,
688 sc, ACPI_EVENT_PRI_LAST);
689 EVENTHANDLER_REGISTER(acpi_wakeup_event, acpi_system_eventhandler_wakeup,
690 sc, ACPI_EVENT_PRI_LAST);
691
692 /* Flag our initial states. */
693 sc->acpi_enabled = 1;
694 sc->acpi_sstate = ACPI_STATE_S0;
695 sc->acpi_sleep_disabled = 0;
696 /* Create the control device */
697 sc->acpi_dev_t = make_dev(&acpi_ops, 0, UID_ROOT, GID_WHEEL, 0644, "acpi");
698 sc->acpi_dev_t->si_drv1 = sc;
699
700 if ((error = acpi_machdep_init(dev)))
701 goto out;
702
703 /* Register ACPI again to pass the correct argument of pm_func. */
704 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc);
705
706 if (!acpi_disabled("bus"))
707 acpi_probe_children(dev);
708
709 /* Update all GPEs and enable runtime GPEs. */
710 status = AcpiUpdateAllGpes();
711 if (ACPI_FAILURE(status)) {
712 device_printf(dev, "Could not update all GPEs: %s\n",
713 AcpiFormatException(status));
714 }
715
716 /* Allow sleep request after a while. */
717 /* timeout(acpi_sleep_enable, sc, hz * ACPI_MINIMUM_AWAKETIME); */
718
719 error = 0;
720
721 out:
722 ACPI_UNLOCK(acpi);
723 out2:
724 cputimer_intr_pmfixup();
725 acpi_task_thread_schedule();
726
727 return_VALUE (error);
728 }
729
730 static int
acpi_suspend(device_t dev)731 acpi_suspend(device_t dev)
732 {
733 device_t child, *devlist;
734 int error, i, numdevs, pstate;
735
736 /* First give child devices a chance to suspend. */
737 error = bus_generic_suspend(dev);
738 if (error)
739 return (error);
740
741 /*
742 * Now, set them into the appropriate power state, usually D3. If the
743 * device has an _SxD method for the next sleep state, use that power
744 * state instead.
745 */
746 device_get_children(dev, &devlist, &numdevs);
747 for (i = 0; i < numdevs; i++) {
748 /* If the device is not attached, we've powered it down elsewhere. */
749 child = devlist[i];
750 if (!device_is_attached(child))
751 continue;
752
753 /*
754 * Default to D3 for all sleep states. The _SxD method is optional
755 * so set the powerstate even if it's absent.
756 */
757 pstate = PCI_POWERSTATE_D3;
758 error = acpi_device_pwr_for_sleep(device_get_parent(child),
759 child, &pstate);
760 if ((error == 0 || error == ESRCH) && acpi_do_powerstate)
761 pci_set_powerstate(child, pstate);
762 }
763 kfree(devlist, M_TEMP);
764 error = 0;
765
766 return (error);
767 }
768
769 static int
acpi_resume(device_t dev)770 acpi_resume(device_t dev)
771 {
772 ACPI_HANDLE handle;
773 int i, numdevs;
774 device_t child, *devlist;
775
776 /*
777 * Put all devices in D0 before resuming them. Call _S0D on each one
778 * since some systems expect this.
779 */
780 device_get_children(dev, &devlist, &numdevs);
781 for (i = 0; i < numdevs; i++) {
782 child = devlist[i];
783 handle = acpi_get_handle(child);
784 if (handle)
785 AcpiEvaluateObject(handle, "_S0D", NULL, NULL);
786 if (device_is_attached(child) && acpi_do_powerstate)
787 pci_set_powerstate(child, PCI_POWERSTATE_D0);
788 }
789 kfree(devlist, M_TEMP);
790
791 return (bus_generic_resume(dev));
792 }
793
794 static int
acpi_shutdown(device_t dev)795 acpi_shutdown(device_t dev)
796 {
797 /* Allow children to shutdown first. */
798 bus_generic_shutdown(dev);
799
800 /*
801 * Enable any GPEs that are able to power-on the system (i.e., RTC).
802 * Also, disable any that are not valid for this state (most).
803 */
804 acpi_wake_prep_walk(ACPI_STATE_S5);
805
806 return (0);
807 }
808
809 /*
810 * Handle a new device being added
811 */
812 static device_t
acpi_add_child(device_t bus,device_t parent,int order,const char * name,int unit)813 acpi_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
814 {
815 struct acpi_device *ad;
816 device_t child;
817
818 if ((ad = kmalloc(sizeof(*ad), M_ACPIDEV, M_NOWAIT | M_ZERO)) == NULL)
819 return (NULL);
820
821 resource_list_init(&ad->ad_rl);
822 child = device_add_child_ordered(parent, order, name, unit);
823 if (child != NULL)
824 device_set_ivars(child, ad);
825 else
826 kfree(ad, M_ACPIDEV);
827 return (child);
828 }
829
830 static int
acpi_print_child(device_t bus,device_t child)831 acpi_print_child(device_t bus, device_t child)
832 {
833 struct acpi_device *adev = device_get_ivars(child);
834 struct resource_list *rl = &adev->ad_rl;
835 int retval = 0;
836
837 retval += bus_print_child_header(bus, child);
838 retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
839 retval += resource_list_print_type(rl, "iomem", SYS_RES_MEMORY, "%#lx");
840 retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
841 retval += resource_list_print_type(rl, "drq", SYS_RES_DRQ, "%ld");
842 if (device_get_flags(child))
843 retval += kprintf(" flags %#x", device_get_flags(child));
844 retval += bus_print_child_footer(bus, child);
845
846 return (retval);
847 }
848
849 /*
850 * If this device is an ACPI child but no one claimed it, attempt
851 * to power it off. We'll power it back up when a driver is added.
852 *
853 * XXX Disabled for now since many necessary devices (like fdc and
854 * ATA) don't claim the devices we created for them but still expect
855 * them to be powered up.
856 */
857 static void
acpi_probe_nomatch(device_t bus,device_t child)858 acpi_probe_nomatch(device_t bus, device_t child)
859 {
860
861 /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
862 }
863
864 /*
865 * If a new driver has a chance to probe a child, first power it up.
866 *
867 * XXX Disabled for now (see acpi_probe_nomatch for details).
868 */
869 static void
acpi_driver_added(device_t dev,driver_t * driver)870 acpi_driver_added(device_t dev, driver_t *driver)
871 {
872 device_t child, *devlist;
873 int i, numdevs;
874
875 DEVICE_IDENTIFY(driver, dev);
876 device_get_children(dev, &devlist, &numdevs);
877 for (i = 0; i < numdevs; i++) {
878 child = devlist[i];
879 if (device_get_state(child) == DS_NOTPRESENT) {
880 /* pci_set_powerstate(child, PCI_POWERSTATE_D0); */
881 if (device_probe_and_attach(child) != 0) {
882 ; /* pci_set_powerstate(child, PCI_POWERSTATE_D3); */
883 }
884 }
885 }
886 kfree(devlist, M_TEMP);
887 }
888
889 /* Location hint for devctl(8) */
890 static int
acpi_child_location_str_method(device_t cbdev,device_t child,char * buf,size_t buflen)891 acpi_child_location_str_method(device_t cbdev, device_t child, char *buf,
892 size_t buflen)
893 {
894 struct acpi_device *dinfo = device_get_ivars(child);
895
896 if (dinfo->ad_handle)
897 ksnprintf(buf, buflen, "handle=%s", acpi_name(dinfo->ad_handle));
898 else
899 ksnprintf(buf, buflen, "unknown");
900 return (0);
901 }
902
903 /* PnP information for devctl(8) */
904 static int
acpi_child_pnpinfo_str_method(device_t cbdev,device_t child,char * buf,size_t buflen)905 acpi_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
906 size_t buflen)
907 {
908 ACPI_DEVICE_INFO *adinfo;
909 struct acpi_device *dinfo = device_get_ivars(child);
910
911 if (ACPI_FAILURE(AcpiGetObjectInfo(dinfo->ad_handle, &adinfo))) {
912 ksnprintf(buf, buflen, "unknown");
913 } else {
914 ksnprintf(buf, buflen, "_HID=%s _UID=%s",
915 (adinfo->Valid & ACPI_VALID_HID) ?
916 adinfo->HardwareId.String : "none",
917 (adinfo->Valid & ACPI_VALID_UID) ?
918 adinfo->UniqueId.String : "0");
919 AcpiOsFree(adinfo);
920 }
921 return (0);
922 }
923
924 /*
925 * Handle per-device ivars
926 */
927 static int
acpi_read_ivar(device_t dev,device_t child,int index,uintptr_t * result)928 acpi_read_ivar(device_t dev, device_t child, int index, uintptr_t *result)
929 {
930 struct acpi_device *ad;
931
932 if ((ad = device_get_ivars(child)) == NULL) {
933 device_printf(child, "device has no ivars\n");
934 return (ENOENT);
935 }
936
937 /* ACPI and ISA compatibility ivars */
938 switch(index) {
939 case ACPI_IVAR_HANDLE:
940 *(ACPI_HANDLE *)result = ad->ad_handle;
941 break;
942 case ACPI_IVAR_MAGIC:
943 *result = ad->ad_magic;
944 break;
945 case ACPI_IVAR_PRIVATE:
946 *(void **)result = ad->ad_private;
947 break;
948 case ACPI_IVAR_FLAGS:
949 *(int *)result = ad->ad_flags;
950 break;
951 case ACPI_IVAR_RECHECK:
952 *(int *)result = ad->ad_recheck;
953 break;
954 case ISA_IVAR_VENDORID:
955 case ISA_IVAR_SERIAL:
956 case ISA_IVAR_COMPATID:
957 *(int *)result = -1;
958 break;
959 case ISA_IVAR_LOGICALID:
960 *(int *)result = acpi_isa_get_logicalid(child);
961 break;
962 default:
963 return (ENOENT);
964 }
965
966 return (0);
967 }
968
969 static int
acpi_write_ivar(device_t dev,device_t child,int index,uintptr_t value)970 acpi_write_ivar(device_t dev, device_t child, int index, uintptr_t value)
971 {
972 struct acpi_device *ad;
973
974 if ((ad = device_get_ivars(child)) == NULL) {
975 device_printf(child, "device has no ivars\n");
976 return (ENOENT);
977 }
978
979 switch(index) {
980 case ACPI_IVAR_HANDLE:
981 ad->ad_handle = (ACPI_HANDLE)value;
982 break;
983 case ACPI_IVAR_MAGIC:
984 ad->ad_magic = value;
985 break;
986 case ACPI_IVAR_PRIVATE:
987 ad->ad_private = (void *)value;
988 break;
989 case ACPI_IVAR_FLAGS:
990 ad->ad_flags = (int)value;
991 break;
992 case ACPI_IVAR_RECHECK:
993 ad->ad_recheck = (int)value;
994 break;
995 default:
996 panic("bad ivar write request (%d)", index);
997 return (ENOENT);
998 }
999
1000 return (0);
1001 }
1002
1003 /*
1004 * Handle child resource allocation/removal
1005 */
1006 static struct resource_list *
acpi_get_rlist(device_t dev,device_t child)1007 acpi_get_rlist(device_t dev, device_t child)
1008 {
1009 struct acpi_device *ad;
1010
1011 ad = device_get_ivars(child);
1012 return (&ad->ad_rl);
1013 }
1014
1015 /*
1016 * Pre-allocate/manage all memory and IO resources. Since rman can't handle
1017 * duplicates, we merge any in the sysresource attach routine.
1018 */
1019 static int
acpi_sysres_alloc(device_t dev)1020 acpi_sysres_alloc(device_t dev)
1021 {
1022 struct resource *res;
1023 struct resource_list *rl;
1024 struct resource_list_entry *rle;
1025 struct rman *rm;
1026 char *sysres_ids[] = { "PNP0C01", "PNP0C02", NULL };
1027 device_t *children;
1028 int child_count, i;
1029 /*
1030 * Probe/attach any sysresource devices. This would be unnecessary if we
1031 * had multi-pass probe/attach.
1032 */
1033 if (device_get_children(dev, &children, &child_count) != 0)
1034 return (ENXIO);
1035 for (i = 0; i < child_count; i++) {
1036 if (ACPI_ID_PROBE(dev, children[i], sysres_ids) != NULL)
1037 device_probe_and_attach(children[i]);
1038 }
1039 kfree(children, M_TEMP);
1040
1041 rl = BUS_GET_RESOURCE_LIST(device_get_parent(dev), dev);
1042 if(!rl)
1043 return 0;
1044 SLIST_FOREACH(rle, rl, link) {
1045 if (rle->res != NULL) {
1046 device_printf(dev, "duplicate resource for %lx\n", rle->start);
1047 continue;
1048 }
1049
1050 /* Only memory and IO resources are valid here. */
1051 switch (rle->type) {
1052 case SYS_RES_IOPORT:
1053 rm = &acpi_rman_io;
1054 break;
1055 case SYS_RES_MEMORY:
1056 rm = &acpi_rman_mem;
1057 break;
1058 default:
1059 continue;
1060 }
1061
1062 /* Pre-allocate resource and add to our rman pool. */
1063 res = BUS_ALLOC_RESOURCE(device_get_parent(dev), dev, rle->type,
1064 &rle->rid, rle->start, rle->start + rle->count - 1, rle->count,
1065 0, -1);
1066 if (res != NULL) {
1067 rman_manage_region(rm, rman_get_start(res), rman_get_end(res));
1068 rle->res = res;
1069 } else
1070 device_printf(dev, "reservation of %lx, %lx (%d) failed\n",
1071 rle->start, rle->count, rle->type);
1072 }
1073 return (0);
1074 }
1075
1076 static struct resource *
acpi_alloc_resource(device_t bus,device_t child,int type,int * rid,u_long start,u_long end,u_long count,u_int flags,int cpuid)1077 acpi_alloc_resource(device_t bus, device_t child, int type, int *rid,
1078 u_long start, u_long end, u_long count, u_int flags, int cpuid)
1079 {
1080 ACPI_RESOURCE ares;
1081 struct acpi_device *ad = device_get_ivars(child);
1082 struct resource_list *rl = &ad->ad_rl;
1083 struct resource_list_entry *rle;
1084 struct resource *res;
1085 struct rman *rm;
1086
1087 res = NULL;
1088
1089 /* We only handle memory and IO resources through rman. */
1090 switch (type) {
1091 case SYS_RES_IOPORT:
1092 rm = &acpi_rman_io;
1093 break;
1094 case SYS_RES_MEMORY:
1095 rm = &acpi_rman_mem;
1096 break;
1097 default:
1098 rm = NULL;
1099 }
1100
1101 ACPI_SERIAL_BEGIN(acpi);
1102
1103 /*
1104 * If this is an allocation of the "default" range for a given RID, and
1105 * we know what the resources for this device are (i.e., they're on the
1106 * child's resource list), use those start/end values.
1107 */
1108 if (bus == device_get_parent(child) && start == 0UL && end == ~0UL) {
1109 rle = resource_list_find(rl, type, *rid);
1110 if (rle == NULL)
1111 goto out;
1112 start = rle->start;
1113 end = rle->end;
1114 count = rle->count;
1115 cpuid = rle->cpuid;
1116 }
1117
1118 /*
1119 * If this is an allocation of a specific range, see if we can satisfy
1120 * the request from our system resource regions. If we can't, pass the
1121 * request up to the parent.
1122 */
1123 if (start + count - 1 == end && rm != NULL)
1124 res = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
1125 child);
1126 if (res == NULL) {
1127 res = BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type, rid,
1128 start, end, count, flags, cpuid);
1129 } else {
1130 rman_set_rid(res, *rid);
1131
1132 /* If requested, activate the resource using the parent's method. */
1133 if (flags & RF_ACTIVE)
1134 if (bus_activate_resource(child, type, *rid, res) != 0) {
1135 rman_release_resource(res);
1136 res = NULL;
1137 goto out;
1138 }
1139 }
1140
1141 if (res != NULL && device_get_parent(child) == bus)
1142 switch (type) {
1143 case SYS_RES_IRQ:
1144 /*
1145 * Since bus_config_intr() takes immediate effect, we cannot
1146 * configure the interrupt associated with a device when we
1147 * parse the resources but have to defer it until a driver
1148 * actually allocates the interrupt via bus_alloc_resource().
1149 *
1150 * NB: Lookup failure is fine, since the device may add its
1151 * own interrupt resources, e.g. MSI or MSI-X.
1152 */
1153 if (ACPI_SUCCESS(
1154 acpi_lookup_irq_resource(child, *rid, res, &ares))) {
1155 acpi_config_intr(child, &ares);
1156 } else {
1157 kprintf("irq resource not found\n");
1158 }
1159 break;
1160 }
1161
1162 out:
1163 ACPI_SERIAL_END(acpi);
1164 return (res);
1165 }
1166
1167 static int
acpi_release_resource(device_t bus,device_t child,int type,int rid,struct resource * r)1168 acpi_release_resource(device_t bus, device_t child, int type, int rid,
1169 struct resource *r)
1170 {
1171 struct rman *rm;
1172 int ret;
1173
1174 /* We only handle memory and IO resources through rman. */
1175 switch (type) {
1176 case SYS_RES_IOPORT:
1177 rm = &acpi_rman_io;
1178 break;
1179 case SYS_RES_MEMORY:
1180 rm = &acpi_rman_mem;
1181 break;
1182 default:
1183 rm = NULL;
1184 }
1185
1186 ACPI_SERIAL_BEGIN(acpi);
1187
1188 /*
1189 * If this resource belongs to one of our internal managers,
1190 * deactivate it and release it to the local pool. If it doesn't,
1191 * pass this request up to the parent.
1192 */
1193 if (rm != NULL && rman_is_region_manager(r, rm)) {
1194 if (rman_get_flags(r) & RF_ACTIVE) {
1195 ret = bus_deactivate_resource(child, type, rid, r);
1196 if (ret != 0)
1197 goto out;
1198 }
1199 ret = rman_release_resource(r);
1200 } else
1201 ret = BUS_RELEASE_RESOURCE(device_get_parent(bus), child, type, rid, r);
1202
1203 out:
1204 ACPI_SERIAL_END(acpi);
1205 return (ret);
1206 }
1207
1208 static void
acpi_delete_resource(device_t bus,device_t child,int type,int rid)1209 acpi_delete_resource(device_t bus, device_t child, int type, int rid)
1210 {
1211 struct resource_list *rl;
1212
1213 rl = acpi_get_rlist(bus, child);
1214 resource_list_delete(rl, type, rid);
1215 }
1216
1217 /* Allocate an IO port or memory resource, given its GAS. */
1218 int
acpi_bus_alloc_gas(device_t dev,int * type,int * rid,ACPI_GENERIC_ADDRESS * gas,struct resource ** res,u_int flags)1219 acpi_bus_alloc_gas(device_t dev, int *type, int *rid, ACPI_GENERIC_ADDRESS *gas,
1220 struct resource **res, u_int flags)
1221 {
1222 int error, res_type;
1223
1224 error = ENOMEM;
1225 if (type == NULL || rid == NULL || gas == NULL || res == NULL)
1226 return (EINVAL);
1227
1228 /* We only support memory and IO spaces. */
1229 switch (gas->SpaceId) {
1230 case ACPI_ADR_SPACE_SYSTEM_MEMORY:
1231 res_type = SYS_RES_MEMORY;
1232 break;
1233 case ACPI_ADR_SPACE_SYSTEM_IO:
1234 res_type = SYS_RES_IOPORT;
1235 break;
1236 default:
1237 return (EOPNOTSUPP);
1238 }
1239
1240 /*
1241 * If the register width is less than 8, assume the BIOS author means
1242 * it is a bit field and just allocate a byte.
1243 */
1244 if (gas->BitWidth && gas->BitWidth < 8)
1245 gas->BitWidth = 8;
1246
1247 /* Validate the address after we're sure we support the space. */
1248 if (gas->Address == 0 || gas->BitWidth == 0)
1249 return (EINVAL);
1250
1251 bus_set_resource(dev, res_type, *rid, gas->Address,
1252 gas->BitWidth / 8, -1);
1253 *res = bus_alloc_resource_any(dev, res_type, rid, RF_ACTIVE | flags);
1254 if (*res != NULL) {
1255 *type = res_type;
1256 error = 0;
1257 } else
1258 bus_delete_resource(dev, res_type, *rid);
1259
1260 return (error);
1261 }
1262
1263 ACPI_STATUS
acpi_eval_osc(device_t dev,ACPI_HANDLE handle,const char * uuidstr,int revision,uint32_t * buf,int count)1264 acpi_eval_osc(device_t dev, ACPI_HANDLE handle, const char *uuidstr,
1265 int revision, uint32_t *buf, int count)
1266 {
1267 ACPI_BUFFER retbuf = { ACPI_ALLOCATE_BUFFER, NULL };
1268 ACPI_OBJECT_LIST arglist;
1269 ACPI_OBJECT arg[4];
1270 ACPI_OBJECT *retobj;
1271 ACPI_STATUS status;
1272 struct uuid uuid;
1273 uint32_t error;
1274 uint8_t oscuuid[ACPI_UUID_LENGTH];
1275 int i;
1276
1277 if (parse_uuid(uuidstr, &uuid) != 0)
1278 return (AE_ERROR);
1279 le_uuid_enc(oscuuid, &uuid);
1280
1281 arglist.Pointer = arg;
1282 arglist.Count = 4;
1283 arg[0].Type = ACPI_TYPE_BUFFER;
1284 arg[0].Buffer.Length = ACPI_UUID_LENGTH;
1285 arg[0].Buffer.Pointer = oscuuid; /* UUID */
1286 arg[1].Type = ACPI_TYPE_INTEGER;
1287 arg[1].Integer.Value = revision; /* revision */
1288 arg[2].Type = ACPI_TYPE_INTEGER;
1289 arg[2].Integer.Value = count; /* # of cap integers */
1290 arg[3].Type = ACPI_TYPE_BUFFER;
1291 arg[3].Buffer.Length = count * sizeof(uint32_t); /* capabilities buffer */
1292 arg[3].Buffer.Pointer = (uint8_t *)buf;
1293
1294 status = AcpiEvaluateObject(handle, "_OSC", &arglist, &retbuf);
1295 if (ACPI_FAILURE(status))
1296 goto done;
1297 retobj = retbuf.Pointer;
1298 error = ((uint32_t *)retobj->Buffer.Pointer)[0] & ACPI_OSC_ERRMASK;
1299 if (error == 0)
1300 goto done;
1301 status = AE_ERROR;
1302 if (error & ACPI_OSCERR_FAILURE)
1303 device_printf(dev, "_OSC unable to process request\n");
1304 if (error & ACPI_OSCERR_BADUUID)
1305 device_printf(dev, "_OSC unrecognized UUID (%s)\n", uuidstr);
1306 if (error & ACPI_OSCERR_BADREV)
1307 device_printf(dev, "_OSC unrecognized revision ID (%d)\n", revision);
1308 if (error & ACPI_OSCERR_CAPSMASKED) {
1309 if ((buf[0] & ACPI_OSC_QUERY_SUPPORT) == 0) {
1310 for (i = 1; i < count; i++) {
1311 device_printf(dev,
1312 "_OSC capabilities have been masked: buf[%d]:%#x\n",
1313 i, buf[i] & ~((uint32_t *)retobj->Buffer.Pointer)[i]);
1314 }
1315 status = AE_SUPPORT;
1316 } else {
1317 status = AE_OK;
1318 }
1319 }
1320 if (buf[0] & ACPI_OSC_QUERY_SUPPORT) {
1321 for (i = 0; i < count; i++)
1322 buf[i] = ((uint32_t *)retobj->Buffer.Pointer)[i];
1323 }
1324
1325 done:
1326 if (retbuf.Pointer != NULL)
1327 AcpiOsFree(retbuf.Pointer);
1328 return (status);
1329 }
1330
1331 /* Probe _HID and _CID for compatible ISA PNP ids. */
1332 static uint32_t
acpi_isa_get_logicalid(device_t dev)1333 acpi_isa_get_logicalid(device_t dev)
1334 {
1335 ACPI_DEVICE_INFO *devinfo;
1336 ACPI_HANDLE h;
1337 uint32_t pnpid;
1338
1339 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1340
1341 devinfo = NULL;
1342 pnpid = 0;
1343
1344 /* Fetch and validate the HID. */
1345 if ((h = acpi_get_handle(dev)) == NULL ||
1346 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
1347 goto out;
1348
1349 if ((devinfo->Valid & ACPI_VALID_HID) != 0)
1350 pnpid = PNP_EISAID(devinfo->HardwareId.String);
1351
1352 out:
1353 if (devinfo)
1354 AcpiOsFree(devinfo);
1355 return_VALUE (pnpid);
1356 }
1357
1358 static int
acpi_isa_get_compatid(device_t dev,uint32_t * cids,int count)1359 acpi_isa_get_compatid(device_t dev, uint32_t *cids, int count)
1360 {
1361 ACPI_DEVICE_INFO *devinfo;
1362 ACPI_HANDLE h;
1363 uint32_t *pnpid;
1364 int valid, i;
1365
1366 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1367
1368 devinfo = NULL;
1369 pnpid = cids;
1370 valid = 0;
1371
1372 /* Fetch and validate the CID */
1373 if ((h = acpi_get_handle(dev)) == NULL ||
1374 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)) ||
1375 (devinfo->Valid & ACPI_VALID_CID) == 0)
1376 goto out;
1377
1378 if (devinfo->CompatibleIdList.Count < count)
1379 count = devinfo->CompatibleIdList.Count;
1380 for (i = 0; i < count; i++) {
1381 if (strncmp(devinfo->CompatibleIdList.Ids[i].String, "PNP", 3) != 0)
1382 continue;
1383 *pnpid++ = PNP_EISAID(devinfo->CompatibleIdList.Ids[i].String);
1384 valid++;
1385 }
1386
1387 out:
1388 if (devinfo)
1389 AcpiOsFree(devinfo);
1390 return_VALUE (valid);
1391 }
1392
1393 static char *
acpi_device_id_probe(device_t bus,device_t dev,char ** ids)1394 acpi_device_id_probe(device_t bus, device_t dev, char **ids)
1395 {
1396 ACPI_HANDLE h;
1397 int i;
1398
1399 h = acpi_get_handle(dev);
1400 if (ids == NULL || h == NULL || acpi_get_type(dev) != ACPI_TYPE_DEVICE)
1401 return (NULL);
1402
1403 /* Try to match one of the array of IDs with a HID or CID. */
1404 for (i = 0; ids[i] != NULL; i++) {
1405 if (acpi_MatchHid(h, ids[i]))
1406 return (ids[i]);
1407 }
1408 return (NULL);
1409 }
1410
1411 static ACPI_STATUS
acpi_device_eval_obj(device_t bus,device_t dev,ACPI_STRING pathname,ACPI_OBJECT_LIST * parameters,ACPI_BUFFER * ret)1412 acpi_device_eval_obj(device_t bus, device_t dev, ACPI_STRING pathname,
1413 ACPI_OBJECT_LIST *parameters, ACPI_BUFFER *ret)
1414 {
1415 ACPI_HANDLE h;
1416
1417 if (dev == NULL)
1418 h = ACPI_ROOT_OBJECT;
1419 else if ((h = acpi_get_handle(dev)) == NULL)
1420 return (AE_BAD_PARAMETER);
1421 return (AcpiEvaluateObject(h, pathname, parameters, ret));
1422 }
1423
1424 static int
acpi_device_pwr_for_sleep(device_t bus,device_t dev,int * dstate)1425 acpi_device_pwr_for_sleep(device_t bus, device_t dev, int *dstate)
1426 {
1427 struct acpi_softc *sc;
1428 ACPI_HANDLE handle;
1429 ACPI_STATUS status;
1430 char sxd[8];
1431 int error;
1432
1433 sc = device_get_softc(bus);
1434 handle = acpi_get_handle(dev);
1435
1436 /*
1437 * XXX If we find these devices, don't try to power them down.
1438 * The serial and IRDA ports on my T23 hang the system when
1439 * set to D3 and it appears that such legacy devices may
1440 * need special handling in their drivers.
1441 */
1442 if (handle == NULL ||
1443 acpi_MatchHid(handle, "PNP0500") ||
1444 acpi_MatchHid(handle, "PNP0501") ||
1445 acpi_MatchHid(handle, "PNP0502") ||
1446 acpi_MatchHid(handle, "PNP0510") ||
1447 acpi_MatchHid(handle, "PNP0511"))
1448 return (ENXIO);
1449
1450 /*
1451 * Override next state with the value from _SxD, if present. If no
1452 * dstate argument was provided, don't fetch the return value.
1453 */
1454 ksnprintf(sxd, sizeof(sxd), "_S%dD", sc->acpi_sstate);
1455 if (dstate)
1456 status = acpi_GetInteger(handle, sxd, dstate);
1457 else
1458 status = AcpiEvaluateObject(handle, sxd, NULL, NULL);
1459
1460 switch (status) {
1461 case AE_OK:
1462 error = 0;
1463 break;
1464 case AE_NOT_FOUND:
1465 error = ESRCH;
1466 break;
1467 default:
1468 error = ENXIO;
1469 break;
1470 }
1471
1472 return (error);
1473 }
1474
1475 /* Callback arg for our implementation of walking the namespace. */
1476 struct acpi_device_scan_ctx {
1477 acpi_scan_cb_t user_fn;
1478 void *arg;
1479 ACPI_HANDLE parent;
1480 };
1481
1482 static ACPI_STATUS
acpi_device_scan_cb(ACPI_HANDLE h,UINT32 level,void * arg,void ** retval)1483 acpi_device_scan_cb(ACPI_HANDLE h, UINT32 level, void *arg, void **retval)
1484 {
1485 struct acpi_device_scan_ctx *ctx;
1486 device_t dev, old_dev;
1487 ACPI_STATUS status;
1488 ACPI_OBJECT_TYPE type;
1489
1490 /*
1491 * Skip this device if we think we'll have trouble with it or it is
1492 * the parent where the scan began.
1493 */
1494 ctx = (struct acpi_device_scan_ctx *)arg;
1495 if (acpi_avoid(h) || h == ctx->parent)
1496 return (AE_OK);
1497
1498 /* If this is not a valid device type (e.g., a method), skip it. */
1499 if (ACPI_FAILURE(AcpiGetType(h, &type)))
1500 return (AE_OK);
1501 if (type != ACPI_TYPE_DEVICE && type != ACPI_TYPE_PROCESSOR &&
1502 type != ACPI_TYPE_THERMAL && type != ACPI_TYPE_POWER)
1503 return (AE_OK);
1504
1505 /*
1506 * Call the user function with the current device. If it is unchanged
1507 * afterwards, return. Otherwise, we update the handle to the new dev.
1508 */
1509 old_dev = acpi_get_device(h);
1510 dev = old_dev;
1511 status = ctx->user_fn(h, &dev, level, ctx->arg);
1512 if (ACPI_FAILURE(status) || old_dev == dev)
1513 return (status);
1514
1515 /* Remove the old child and its connection to the handle. */
1516 if (old_dev != NULL) {
1517 device_delete_child(device_get_parent(old_dev), old_dev);
1518 AcpiDetachData(h, acpi_fake_objhandler);
1519 }
1520
1521 /* Recreate the handle association if the user created a device. */
1522 if (dev != NULL)
1523 AcpiAttachData(h, acpi_fake_objhandler, dev);
1524
1525 return (AE_OK);
1526 }
1527
1528 static ACPI_STATUS
acpi_device_scan_children(device_t bus,device_t dev,int max_depth,acpi_scan_cb_t user_fn,void * arg)1529 acpi_device_scan_children(device_t bus, device_t dev, int max_depth,
1530 acpi_scan_cb_t user_fn, void *arg)
1531 {
1532 ACPI_HANDLE h;
1533 struct acpi_device_scan_ctx ctx;
1534
1535 if (acpi_disabled("children"))
1536 return (AE_OK);
1537
1538 if (dev == NULL)
1539 h = ACPI_ROOT_OBJECT;
1540 else if ((h = acpi_get_handle(dev)) == NULL)
1541 return (AE_BAD_PARAMETER);
1542 ctx.user_fn = user_fn;
1543 ctx.arg = arg;
1544 ctx.parent = h;
1545 return (AcpiWalkNamespace(ACPI_TYPE_ANY, h, max_depth,
1546 acpi_device_scan_cb, NULL, &ctx, NULL));
1547 }
1548
1549 /*
1550 * Even though ACPI devices are not PCI, we use the PCI approach for setting
1551 * device power states since it's close enough to ACPI.
1552 */
1553 static int
acpi_set_powerstate_method(device_t bus,device_t child,int state)1554 acpi_set_powerstate_method(device_t bus, device_t child, int state)
1555 {
1556 ACPI_HANDLE h;
1557 ACPI_STATUS status;
1558 int error;
1559
1560 error = 0;
1561 h = acpi_get_handle(child);
1562 if (state < ACPI_STATE_D0 || state > ACPI_STATE_D3)
1563 return (EINVAL);
1564 if (h == NULL)
1565 return (0);
1566
1567 /* Ignore errors if the power methods aren't present. */
1568 status = acpi_pwr_switch_consumer(h, state);
1569 if (ACPI_FAILURE(status) && status != AE_NOT_FOUND
1570 && status != AE_BAD_PARAMETER)
1571 device_printf(bus, "failed to set ACPI power state D%d on %s: %s\n",
1572 state, acpi_name(h), AcpiFormatException(status));
1573
1574 return (error);
1575 }
1576
1577 static int
acpi_isa_pnp_probe(device_t bus,device_t child,struct isa_pnp_id * ids)1578 acpi_isa_pnp_probe(device_t bus, device_t child, struct isa_pnp_id *ids)
1579 {
1580 int result, cid_count, i;
1581 uint32_t lid, cids[8];
1582
1583 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1584
1585 /*
1586 * ISA-style drivers attached to ACPI may persist and
1587 * probe manually if we return ENOENT. We never want
1588 * that to happen, so don't ever return it.
1589 */
1590 result = ENXIO;
1591
1592 /* Scan the supplied IDs for a match */
1593 lid = acpi_isa_get_logicalid(child);
1594 cid_count = acpi_isa_get_compatid(child, cids, 8);
1595 while (ids && ids->ip_id) {
1596 if (lid == ids->ip_id) {
1597 result = 0;
1598 goto out;
1599 }
1600 for (i = 0; i < cid_count; i++) {
1601 if (cids[i] == ids->ip_id) {
1602 result = 0;
1603 goto out;
1604 }
1605 }
1606 ids++;
1607 }
1608
1609 out:
1610 if (result == 0 && ids->ip_desc)
1611 device_set_desc(child, ids->ip_desc);
1612
1613 return_VALUE (result);
1614 }
1615
1616 /*
1617 * Look for a MCFG table. If it is present, use the settings for
1618 * domain (segment) 0 to setup PCI config space access via the memory
1619 * map.
1620 */
1621 static void
acpi_enable_pcie(void)1622 acpi_enable_pcie(void)
1623 {
1624 ACPI_TABLE_HEADER *hdr;
1625 ACPI_MCFG_ALLOCATION *alloc, *end;
1626 ACPI_STATUS status;
1627
1628 status = AcpiGetTable(ACPI_SIG_MCFG, 1, &hdr);
1629 if (ACPI_FAILURE(status))
1630 return;
1631
1632 end = (ACPI_MCFG_ALLOCATION *)((char *)hdr + hdr->Length);
1633 alloc = (ACPI_MCFG_ALLOCATION *)((ACPI_TABLE_MCFG *)hdr + 1);
1634 while (alloc < end) {
1635 if (alloc->PciSegment == 0) {
1636 pcie_cfgregopen(alloc->Address, alloc->StartBusNumber,
1637 alloc->EndBusNumber);
1638 return;
1639 }
1640 alloc++;
1641 }
1642 }
1643
1644 /*
1645 * Scan all of the ACPI namespace and attach child devices.
1646 *
1647 * We should only expect to find devices in the \_PR, \_TZ, \_SI, and
1648 * \_SB scopes, and \_PR and \_TZ became obsolete in the ACPI 2.0 spec.
1649 * However, in violation of the spec, some systems place their PCI link
1650 * devices in \, so we have to walk the whole namespace. We check the
1651 * type of namespace nodes, so this should be ok.
1652 */
1653 static void
acpi_probe_children(device_t bus)1654 acpi_probe_children(device_t bus)
1655 {
1656 device_t *children;
1657 int cnt;
1658
1659 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1660
1661 /*
1662 * Scan the namespace and insert placeholders for all the devices that
1663 * we find. We also probe/attach any early devices.
1664 *
1665 * Note that we use AcpiWalkNamespace rather than AcpiGetDevices because
1666 * we want to create nodes for all devices, not just those that are
1667 * currently present. (This assumes that we don't want to create/remove
1668 * devices as they appear, which might be smarter.)
1669 */
1670 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "namespace scan\n"));
1671 AcpiWalkNamespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, 100,
1672 acpi_probe_child, NULL, bus, NULL);
1673 /* This gets us all the children that we added from the ACPI namespace. */
1674 device_get_children(bus, &children, &cnt);
1675
1676 /* Pre-allocate resources for our rman from any sysresource devices. */
1677 acpi_sysres_alloc(bus);
1678 /* Create any static children by calling device identify methods. */
1679 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "device identify routines\n"));
1680 bus_generic_probe(bus);
1681
1682 /* Probe/attach all children, created staticly and from the namespace. */
1683 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "first bus_generic_attach\n"));
1684 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI+2);
1685 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "second bus_generic_attach\n"));
1686 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI+1);
1687 /* Re-check device presence for previously disabled devices. */
1688 acpi_reprobe_children(bus, children, cnt);
1689 kfree(children, M_TEMP);
1690 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "third bus_generic_attach\n"));
1691 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI);
1692 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "fourth bus_generic_attach\n"));
1693 bus_generic_attach_gpri(bus, KOBJ_GPRI_ACPI);
1694
1695 /*
1696 * Some of these children may have attached others as part of their attach
1697 * process (eg. the root PCI bus driver), so rescan.
1698 */
1699 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "fifth bus_generic_attach\n"));
1700 bus_generic_attach(bus);
1701
1702 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "sixth bus_generic_attach\n"));
1703 bus_generic_attach(bus);
1704
1705 /* Attach wake sysctls. */
1706 acpi_wake_sysctl_walk(bus);
1707
1708 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "done attaching children\n"));
1709 return_VOID;
1710 }
1711
1712 /*
1713 * Determine the probe order for a given device.
1714 */
1715 static void
acpi_probe_order(ACPI_HANDLE handle,int * order)1716 acpi_probe_order(ACPI_HANDLE handle, int *order)
1717 {
1718 ACPI_OBJECT_TYPE type;
1719
1720 /*
1721 * 1. I/O port and memory system resource holders
1722 * 2. Embedded controllers (to handle early accesses)
1723 * 3. PCI Link Devices
1724 * 100000. CPUs
1725 */
1726 AcpiGetType(handle, &type);
1727 if (acpi_MatchHid(handle, "PNP0C01") || acpi_MatchHid(handle, "PNP0C02"))
1728 *order = 1;
1729 else if (acpi_MatchHid(handle, "PNP0C09"))
1730 *order = 2;
1731 else if (acpi_MatchHid(handle, "PNP0C0F"))
1732 *order = 3;
1733 else if (type == ACPI_TYPE_PROCESSOR)
1734 *order = 100000;
1735 }
1736
1737 /*
1738 * Flag a device as disabled, because it isn't present according to the
1739 * _STA method. We set the recheck instance-variable, to make sure that we
1740 * recheck the device presence at a later point.
1741 */
1742 static void
acpi_disable_not_present(device_t child)1743 acpi_disable_not_present(device_t child)
1744 {
1745 device_disable(child);
1746 acpi_set_recheck(child, 1);
1747 }
1748
1749 /*
1750 * This rechecks the device presence for all the devices which were disabled
1751 * using acpi_disable_not_present().
1752 */
1753 static void
acpi_reprobe_children(device_t bus,device_t * children,int cnt)1754 acpi_reprobe_children(device_t bus, device_t *children, int cnt)
1755 {
1756 int i;
1757
1758 for (i = 0; i < cnt; i++) {
1759 device_t dev = children[i];
1760
1761 if (device_is_enabled(dev))
1762 continue;
1763
1764 if (acpi_get_recheck(dev)) {
1765 if (acpi_DeviceIsPresent(dev)) {
1766 acpi_set_recheck(dev, 0);
1767 device_enable(dev);
1768 /*
1769 * Currently we parse the resources for every
1770 * device at the first time, when we see
1771 * that it is present.
1772 */
1773 acpi_parse_resources(dev, acpi_get_handle(dev),
1774 &acpi_res_parse_set, NULL);
1775 }
1776 }
1777 }
1778 }
1779
1780 /*
1781 * Evaluate a child device and determine whether we might attach a device to
1782 * it.
1783 */
1784 static ACPI_STATUS
acpi_probe_child(ACPI_HANDLE handle,UINT32 level,void * context,void ** status)1785 acpi_probe_child(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
1786 {
1787 struct acpi_prw_data prw;
1788 ACPI_OBJECT_TYPE type;
1789 ACPI_HANDLE h;
1790 device_t bus, child;
1791 int order;
1792 char *handle_str;
1793
1794 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
1795
1796 if (acpi_disabled("children"))
1797 return_ACPI_STATUS (AE_OK);
1798
1799 /* Skip this device if we think we'll have trouble with it. */
1800 if (acpi_avoid(handle))
1801 return_ACPI_STATUS (AE_OK);
1802
1803 bus = (device_t)context;
1804 if (ACPI_SUCCESS(AcpiGetType(handle, &type))) {
1805 handle_str = acpi_name(handle);
1806 switch (type) {
1807 case ACPI_TYPE_DEVICE:
1808 /*
1809 * Since we scan from \, be sure to skip system scope objects.
1810 * \_SB_ and \_TZ_ are defined in ACPICA as devices to work around
1811 * BIOS bugs. For example, \_SB_ is to allow \_SB_._INI to be run
1812 * during the intialization and \_TZ_ is to support Notify() on it.
1813 */
1814 if (strcmp(handle_str, "\\_SB_") == 0 ||
1815 strcmp(handle_str, "\\_TZ_") == 0)
1816 break;
1817
1818 if (acpi_parse_prw(handle, &prw) == 0)
1819 AcpiSetupGpeForWake(handle, prw.gpe_handle, prw.gpe_bit);
1820
1821 /* FALLTHROUGH */
1822 case ACPI_TYPE_PROCESSOR:
1823 case ACPI_TYPE_THERMAL:
1824 case ACPI_TYPE_POWER:
1825 /*
1826 * Create a placeholder device for this node. Sort the
1827 * placeholder so that the probe/attach passes will run
1828 * breadth-first. Orders less than ACPI_DEV_BASE_ORDER
1829 * are reserved for special objects (i.e., system
1830 * resources). CPU devices have a very high order to
1831 * ensure they are probed after other devices.
1832 */
1833 ACPI_DEBUG_PRINT((ACPI_DB_OBJECTS, "scanning '%s'\n", handle_str));
1834 order = level * 10 + 100;
1835 acpi_probe_order(handle, &order);
1836 child = BUS_ADD_CHILD(bus, bus, order, NULL, -1);
1837 if (child == NULL)
1838 break;
1839
1840 /* Associate the handle with the device_t and vice versa. */
1841 acpi_set_handle(child, handle);
1842 AcpiAttachData(handle, acpi_fake_objhandler, child);
1843
1844 /*
1845 * Check that the device is present. If it's not present,
1846 * leave it disabled (so that we have a device_t attached to
1847 * the handle, but we don't probe it).
1848 *
1849 * XXX PCI link devices sometimes report "present" but not
1850 * "functional" (i.e. if disabled). Go ahead and probe them
1851 * anyway since we may enable them later.
1852 */
1853 if (type == ACPI_TYPE_DEVICE && !acpi_DeviceIsPresent(child)) {
1854 /* Never disable PCI link devices. */
1855 if (acpi_MatchHid(handle, "PNP0C0F"))
1856 break;
1857 /*
1858 * Docking stations should remain enabled since the system
1859 * may be undocked at boot.
1860 */
1861 if (ACPI_SUCCESS(AcpiGetHandle(handle, "_DCK", &h)))
1862 break;
1863
1864 acpi_disable_not_present(child);
1865 break;
1866 }
1867
1868 /*
1869 * Get the device's resource settings and attach them.
1870 * Note that if the device has _PRS but no _CRS, we need
1871 * to decide when it's appropriate to try to configure the
1872 * device. Ignore the return value here; it's OK for the
1873 * device not to have any resources.
1874 */
1875 acpi_parse_resources(child, handle, &acpi_res_parse_set, NULL);
1876 break;
1877 }
1878 }
1879
1880 return_ACPI_STATUS (AE_OK);
1881 }
1882
1883 /*
1884 * AcpiAttachData() requires an object handler but never uses it. This is a
1885 * placeholder object handler so we can store a device_t in an ACPI_HANDLE.
1886 */
1887 void
acpi_fake_objhandler(ACPI_HANDLE h,void * data)1888 acpi_fake_objhandler(ACPI_HANDLE h, void *data)
1889 {
1890 }
1891
1892 static void
acpi_shutdown_final(void * arg,int howto)1893 acpi_shutdown_final(void *arg, int howto)
1894 {
1895 struct acpi_softc *sc;
1896 ACPI_STATUS status;
1897
1898 /*
1899 * XXX Shutdown code should only run on the BSP (cpuid 0).
1900 * Some chipsets do not power off the system correctly if called from
1901 * an AP.
1902 */
1903 sc = arg;
1904 if ((howto & RB_POWEROFF) != 0) {
1905 status = AcpiEnterSleepStatePrep(ACPI_STATE_S5);
1906 if (ACPI_FAILURE(status)) {
1907 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
1908 AcpiFormatException(status));
1909 return;
1910 }
1911 device_printf(sc->acpi_dev, "Powering system off\n");
1912 ACPI_DISABLE_IRQS();
1913 status = AcpiEnterSleepState(ACPI_STATE_S5);
1914 if (ACPI_FAILURE(status)) {
1915 device_printf(sc->acpi_dev, "power-off failed - %s\n",
1916 AcpiFormatException(status));
1917 } else {
1918 DELAY(1000000);
1919 device_printf(sc->acpi_dev, "power-off failed - timeout\n");
1920 }
1921 } else if ((howto & RB_HALT) == 0 && sc->acpi_handle_reboot) {
1922 /* Reboot using the reset register. */
1923 status = AcpiReset();
1924 if (ACPI_FAILURE(status)) {
1925 if (status != AE_NOT_EXIST)
1926 device_printf(sc->acpi_dev, "reset failed - %s\n",
1927 AcpiFormatException(status));
1928 } else {
1929 DELAY(1000000);
1930 device_printf(sc->acpi_dev, "reset failed - timeout\n");
1931 }
1932 } else if (sc->acpi_do_disable && panicstr == NULL) {
1933 /*
1934 * Only disable ACPI if the user requested. On some systems, writing
1935 * the disable value to SMI_CMD hangs the system.
1936 */
1937 device_printf(sc->acpi_dev, "Shutting down\n");
1938 AcpiTerminate();
1939 }
1940 }
1941
1942 static void
acpi_enable_fixed_events(struct acpi_softc * sc)1943 acpi_enable_fixed_events(struct acpi_softc *sc)
1944 {
1945 static int first_time = 1;
1946
1947 /* Enable and clear fixed events and install handlers. */
1948 if ((AcpiGbl_FADT.Flags & ACPI_FADT_POWER_BUTTON) == 0) {
1949 AcpiClearEvent(ACPI_EVENT_POWER_BUTTON);
1950 AcpiInstallFixedEventHandler(ACPI_EVENT_POWER_BUTTON,
1951 acpi_event_power_button_sleep, sc);
1952 if (first_time)
1953 device_printf(sc->acpi_dev, "Power Button (fixed)\n");
1954 }
1955 if ((AcpiGbl_FADT.Flags & ACPI_FADT_SLEEP_BUTTON) == 0) {
1956 AcpiClearEvent(ACPI_EVENT_SLEEP_BUTTON);
1957 AcpiInstallFixedEventHandler(ACPI_EVENT_SLEEP_BUTTON,
1958 acpi_event_sleep_button_sleep, sc);
1959 if (first_time)
1960 device_printf(sc->acpi_dev, "Sleep Button (fixed)\n");
1961 }
1962
1963 first_time = 0;
1964 }
1965
1966 /*
1967 * Returns true if the device is actually present and should
1968 * be attached to. This requires the present, enabled, UI-visible
1969 * and diagnostics-passed bits to be set.
1970 */
1971 BOOLEAN
acpi_DeviceIsPresent(device_t dev)1972 acpi_DeviceIsPresent(device_t dev)
1973 {
1974 ACPI_HANDLE h;
1975 UINT32 s;
1976 ACPI_STATUS status;
1977
1978 h = acpi_get_handle(dev);
1979 if (h == NULL)
1980 return (FALSE);
1981 status = acpi_GetInteger(h, "_STA", &s);
1982
1983 /*
1984 * If no _STA method or if it failed, then assume that
1985 * the device is present.
1986 */
1987 if (ACPI_FAILURE(status))
1988 return (TRUE);
1989
1990 return (ACPI_DEVICE_PRESENT(s) ? TRUE : FALSE);
1991 }
1992
1993 /*
1994 * Returns true if the battery is actually present and inserted.
1995 */
1996 BOOLEAN
acpi_BatteryIsPresent(device_t dev)1997 acpi_BatteryIsPresent(device_t dev)
1998 {
1999 ACPI_HANDLE h;
2000 UINT32 s;
2001 ACPI_STATUS status;
2002
2003 h = acpi_get_handle(dev);
2004 if (h == NULL)
2005 return (FALSE);
2006 status = acpi_GetInteger(h, "_STA", &s);
2007
2008 /*
2009 * If no _STA method or if it failed, then assume that
2010 * the device is present.
2011 */
2012 if (ACPI_FAILURE(status))
2013 return (TRUE);
2014
2015 return (ACPI_BATTERY_PRESENT(s) ? TRUE : FALSE);
2016 }
2017
2018 /*
2019 * Match a HID string against a handle
2020 */
2021 BOOLEAN
acpi_MatchHid(ACPI_HANDLE h,const char * hid)2022 acpi_MatchHid(ACPI_HANDLE h, const char *hid)
2023 {
2024 ACPI_DEVICE_INFO *devinfo;
2025 int ret, i;
2026
2027 ret = FALSE;
2028 if (hid == NULL || h == NULL ||
2029 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2030 return (ret);
2031
2032 if ((devinfo->Valid & ACPI_VALID_HID) != 0 &&
2033 strcmp(hid, devinfo->HardwareId.String) == 0)
2034 ret = TRUE;
2035 else if ((devinfo->Valid & ACPI_VALID_CID) != 0) {
2036 for (i = 0; i < devinfo->CompatibleIdList.Count; i++) {
2037 if (strcmp(hid, devinfo->CompatibleIdList.Ids[i].String) == 0) {
2038 ret = TRUE;
2039 break;
2040 }
2041 }
2042 }
2043
2044 AcpiOsFree(devinfo);
2045 return (ret);
2046 }
2047
2048 /*
2049 * Match a UID string against a handle
2050 */
2051 BOOLEAN
acpi_MatchUid(ACPI_HANDLE h,const char * uid)2052 acpi_MatchUid(ACPI_HANDLE h, const char *uid)
2053 {
2054 ACPI_DEVICE_INFO *devinfo;
2055 int ret;
2056
2057 ret = FALSE;
2058 if (uid == NULL || h == NULL ||
2059 ACPI_FAILURE(AcpiGetObjectInfo(h, &devinfo)))
2060 return (ret);
2061
2062 if ((devinfo->Valid & ACPI_VALID_UID) != 0 &&
2063 strcmp(uid, devinfo->UniqueId.String) == 0)
2064 ret = TRUE;
2065
2066 AcpiOsFree(devinfo);
2067 return (ret);
2068 }
2069
2070 /*
2071 * Return the handle of a named object within our scope, ie. that of (parent)
2072 * or one if its parents.
2073 */
2074 ACPI_STATUS
acpi_GetHandleInScope(ACPI_HANDLE parent,char * path,ACPI_HANDLE * result)2075 acpi_GetHandleInScope(ACPI_HANDLE parent, char *path, ACPI_HANDLE *result)
2076 {
2077 ACPI_HANDLE r;
2078 ACPI_STATUS status;
2079
2080 /* Walk back up the tree to the root */
2081 for (;;) {
2082 status = AcpiGetHandle(parent, path, &r);
2083 if (ACPI_SUCCESS(status)) {
2084 *result = r;
2085 return (AE_OK);
2086 }
2087 /* XXX Return error here? */
2088 if (status != AE_NOT_FOUND)
2089 return (AE_OK);
2090 if (ACPI_FAILURE(AcpiGetParent(parent, &r)))
2091 return (AE_NOT_FOUND);
2092 parent = r;
2093 }
2094 }
2095
2096 /*
2097 * Allocate a buffer with a preset data size.
2098 */
2099 ACPI_BUFFER *
acpi_AllocBuffer(int size)2100 acpi_AllocBuffer(int size)
2101 {
2102 ACPI_BUFFER *buf;
2103
2104 if ((buf = kmalloc(size + sizeof(*buf), M_ACPIDEV, M_NOWAIT)) == NULL)
2105 return (NULL);
2106 buf->Length = size;
2107 buf->Pointer = (void *)(buf + 1);
2108 return (buf);
2109 }
2110
2111 ACPI_STATUS
acpi_SetInteger(ACPI_HANDLE handle,char * path,UINT32 number)2112 acpi_SetInteger(ACPI_HANDLE handle, char *path, UINT32 number)
2113 {
2114 ACPI_OBJECT arg1;
2115 ACPI_OBJECT_LIST args;
2116
2117 arg1.Type = ACPI_TYPE_INTEGER;
2118 arg1.Integer.Value = number;
2119 args.Count = 1;
2120 args.Pointer = &arg1;
2121
2122 return (AcpiEvaluateObject(handle, path, &args, NULL));
2123 }
2124
2125 /*
2126 * Evaluate a path that should return an integer.
2127 */
2128 ACPI_STATUS
acpi_GetInteger(ACPI_HANDLE handle,char * path,UINT32 * number)2129 acpi_GetInteger(ACPI_HANDLE handle, char *path, UINT32 *number)
2130 {
2131 ACPI_STATUS status;
2132 ACPI_BUFFER buf;
2133 ACPI_OBJECT param;
2134
2135 if (handle == NULL)
2136 handle = ACPI_ROOT_OBJECT;
2137
2138 /*
2139 * Assume that what we've been pointed at is an Integer object, or
2140 * a method that will return an Integer.
2141 */
2142 buf.Pointer = ¶m;
2143 buf.Length = sizeof(param);
2144 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2145 if (ACPI_SUCCESS(status)) {
2146 if (param.Type == ACPI_TYPE_INTEGER)
2147 *number = param.Integer.Value;
2148 else
2149 status = AE_TYPE;
2150 }
2151
2152 /*
2153 * In some applications, a method that's expected to return an Integer
2154 * may instead return a Buffer (probably to simplify some internal
2155 * arithmetic). We'll try to fetch whatever it is, and if it's a Buffer,
2156 * convert it into an Integer as best we can.
2157 *
2158 * This is a hack.
2159 */
2160 if (status == AE_BUFFER_OVERFLOW) {
2161 if ((buf.Pointer = AcpiOsAllocate(buf.Length)) == NULL) {
2162 status = AE_NO_MEMORY;
2163 } else {
2164 status = AcpiEvaluateObject(handle, path, NULL, &buf);
2165 if (ACPI_SUCCESS(status))
2166 status = acpi_ConvertBufferToInteger(&buf, number);
2167 AcpiOsFree(buf.Pointer);
2168 }
2169 }
2170 return (status);
2171 }
2172
2173 ACPI_STATUS
acpi_ConvertBufferToInteger(ACPI_BUFFER * bufp,UINT32 * number)2174 acpi_ConvertBufferToInteger(ACPI_BUFFER *bufp, UINT32 *number)
2175 {
2176 ACPI_OBJECT *p;
2177 UINT8 *val;
2178 int i;
2179
2180 p = (ACPI_OBJECT *)bufp->Pointer;
2181 if (p->Type == ACPI_TYPE_INTEGER) {
2182 *number = p->Integer.Value;
2183 return (AE_OK);
2184 }
2185 if (p->Type != ACPI_TYPE_BUFFER)
2186 return (AE_TYPE);
2187 if (p->Buffer.Length > sizeof(int))
2188 return (AE_BAD_DATA);
2189
2190 *number = 0;
2191 val = p->Buffer.Pointer;
2192 for (i = 0; i < p->Buffer.Length; i++)
2193 *number += val[i] << (i * 8);
2194 return (AE_OK);
2195 }
2196
2197 /*
2198 * Iterate over the elements of an a package object, calling the supplied
2199 * function for each element.
2200 *
2201 * XXX possible enhancement might be to abort traversal on error.
2202 */
2203 ACPI_STATUS
acpi_ForeachPackageObject(ACPI_OBJECT * pkg,void (* func)(ACPI_OBJECT * comp,void * arg),void * arg)2204 acpi_ForeachPackageObject(ACPI_OBJECT *pkg,
2205 void (*func)(ACPI_OBJECT *comp, void *arg), void *arg)
2206 {
2207 ACPI_OBJECT *comp;
2208 int i;
2209
2210 if (pkg == NULL || pkg->Type != ACPI_TYPE_PACKAGE)
2211 return (AE_BAD_PARAMETER);
2212
2213 /* Iterate over components */
2214 i = 0;
2215 comp = pkg->Package.Elements;
2216 for (; i < pkg->Package.Count; i++, comp++)
2217 func(comp, arg);
2218
2219 return (AE_OK);
2220 }
2221
2222 /*
2223 * Find the (index)th resource object in a set.
2224 */
2225 ACPI_STATUS
acpi_FindIndexedResource(ACPI_BUFFER * buf,int index,ACPI_RESOURCE ** resp)2226 acpi_FindIndexedResource(ACPI_BUFFER *buf, int index, ACPI_RESOURCE **resp)
2227 {
2228 ACPI_RESOURCE *rp;
2229 int i;
2230
2231 rp = (ACPI_RESOURCE *)buf->Pointer;
2232 i = index;
2233 while (i-- > 0) {
2234 /* Range check */
2235 if (rp > (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length))
2236 return (AE_BAD_PARAMETER);
2237
2238 /* Check for terminator */
2239 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2240 return (AE_NOT_FOUND);
2241 rp = ACPI_NEXT_RESOURCE(rp);
2242 }
2243 if (resp != NULL)
2244 *resp = rp;
2245
2246 return (AE_OK);
2247 }
2248
2249 /*
2250 * Append an ACPI_RESOURCE to an ACPI_BUFFER.
2251 *
2252 * Given a pointer to an ACPI_RESOURCE structure, expand the ACPI_BUFFER
2253 * provided to contain it. If the ACPI_BUFFER is empty, allocate a sensible
2254 * backing block. If the ACPI_RESOURCE is NULL, return an empty set of
2255 * resources.
2256 */
2257 #define ACPI_INITIAL_RESOURCE_BUFFER_SIZE 512
2258
2259 ACPI_STATUS
acpi_AppendBufferResource(ACPI_BUFFER * buf,ACPI_RESOURCE * res)2260 acpi_AppendBufferResource(ACPI_BUFFER *buf, ACPI_RESOURCE *res)
2261 {
2262 ACPI_RESOURCE *rp;
2263 void *newp;
2264
2265 /* Initialise the buffer if necessary. */
2266 if (buf->Pointer == NULL) {
2267 buf->Length = ACPI_INITIAL_RESOURCE_BUFFER_SIZE;
2268 if ((buf->Pointer = AcpiOsAllocate(buf->Length)) == NULL)
2269 return (AE_NO_MEMORY);
2270 rp = (ACPI_RESOURCE *)buf->Pointer;
2271 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2272 rp->Length = ACPI_RS_SIZE_MIN;
2273 }
2274 if (res == NULL)
2275 return (AE_OK);
2276
2277 /*
2278 * Scan the current buffer looking for the terminator.
2279 * This will either find the terminator or hit the end
2280 * of the buffer and return an error.
2281 */
2282 rp = (ACPI_RESOURCE *)buf->Pointer;
2283 for (;;) {
2284 /* Range check, don't go outside the buffer */
2285 if (rp >= (ACPI_RESOURCE *)((uint8_t *)buf->Pointer + buf->Length))
2286 return (AE_BAD_PARAMETER);
2287 if (rp->Type == ACPI_RESOURCE_TYPE_END_TAG || rp->Length == 0)
2288 break;
2289 rp = ACPI_NEXT_RESOURCE(rp);
2290 }
2291
2292 /*
2293 * Check the size of the buffer and expand if required.
2294 *
2295 * Required size is:
2296 * size of existing resources before terminator +
2297 * size of new resource and header +
2298 * size of terminator.
2299 *
2300 * Note that this loop should really only run once, unless
2301 * for some reason we are stuffing a *really* huge resource.
2302 */
2303 while ((((uint8_t *)rp - (uint8_t *)buf->Pointer) +
2304 res->Length + ACPI_RS_SIZE_NO_DATA +
2305 ACPI_RS_SIZE_MIN) >= buf->Length) {
2306 if ((newp = AcpiOsAllocate(buf->Length * 2)) == NULL)
2307 return (AE_NO_MEMORY);
2308 bcopy(buf->Pointer, newp, buf->Length);
2309 rp = (ACPI_RESOURCE *)((uint8_t *)newp +
2310 ((uint8_t *)rp - (uint8_t *)buf->Pointer));
2311 AcpiOsFree(buf->Pointer);
2312 buf->Pointer = newp;
2313 buf->Length += buf->Length;
2314 }
2315
2316 /* Insert the new resource. */
2317 bcopy(res, rp, res->Length + ACPI_RS_SIZE_NO_DATA);
2318
2319 /* And add the terminator. */
2320 rp = ACPI_NEXT_RESOURCE(rp);
2321 rp->Type = ACPI_RESOURCE_TYPE_END_TAG;
2322 rp->Length = ACPI_RS_SIZE_MIN;
2323
2324 return (AE_OK);
2325 }
2326
2327 /*
2328 * Set interrupt model.
2329 */
2330 ACPI_STATUS
acpi_SetIntrModel(int model)2331 acpi_SetIntrModel(int model)
2332 {
2333
2334 return (acpi_SetInteger(ACPI_ROOT_OBJECT, "_PIC", model));
2335 }
2336
2337 /*
2338 * DEPRECATED. This interface has serious deficiencies and will be
2339 * removed.
2340 *
2341 * Immediately enter the sleep state. In the old model, acpiconf(8) ran
2342 * rc.suspend and rc.resume so we don't have to notify devd(8) to do this.
2343 */
2344 ACPI_STATUS
acpi_SetSleepState(struct acpi_softc * sc,int state)2345 acpi_SetSleepState(struct acpi_softc *sc, int state)
2346 {
2347 static int once;
2348
2349 if (!once) {
2350 device_printf(sc->acpi_dev,
2351 "warning: acpi_SetSleepState() deprecated, need to update your software\n");
2352 once = 1;
2353 }
2354 return (acpi_EnterSleepState(sc, state));
2355 }
2356
2357 static void
acpi_sleep_force(void * arg)2358 acpi_sleep_force(void *arg)
2359 {
2360 struct acpi_softc *sc;
2361
2362 sc = arg;
2363 device_printf(sc->acpi_dev,
2364 "suspend request timed out, forcing sleep now\n");
2365 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2366 device_printf(sc->acpi_dev, "force sleep state S%d failed\n",
2367 sc->acpi_next_sstate);
2368 }
2369
2370 /*
2371 * Request that the system enter the given suspend state. All /dev/apm
2372 * devices and devd(8) will be notified. Userland then has a chance to
2373 * save state and acknowledge the request. The system sleeps once all
2374 * acks are in.
2375 */
2376 int
acpi_ReqSleepState(struct acpi_softc * sc,int state)2377 acpi_ReqSleepState(struct acpi_softc *sc, int state)
2378 {
2379 #ifdef notyet
2380 struct apm_clone_data *clone;
2381 #endif
2382
2383 if (state < ACPI_STATE_S1 || state > ACPI_STATE_S5)
2384 return (EINVAL);
2385
2386 /* S5 (soft-off) should be entered directly with no waiting. */
2387 if (state == ACPI_STATE_S5) {
2388 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, state)))
2389 return (0);
2390 else
2391 return (ENXIO);
2392 }
2393
2394 /* This platform does not support acpi suspend/resume. */
2395 return (EOPNOTSUPP);
2396
2397 /* If a suspend request is already in progress, just return. */
2398 ACPI_LOCK(acpi);
2399 if (sc->acpi_next_sstate != 0) {
2400 ACPI_UNLOCK(acpi);
2401 return (0);
2402 }
2403
2404 /* Record the pending state and notify all apm devices. */
2405 sc->acpi_next_sstate = state;
2406 #if 0
2407 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2408 clone->notify_status = APM_EV_NONE;
2409 if ((clone->flags & ACPI_EVF_DEVD) == 0) {
2410 KNOTE(&clone->sel_read.si_note, 0);
2411 }
2412 }
2413 #endif
2414
2415 /* If devd(8) is not running, immediately enter the sleep state. */
2416 if (devctl_process_running() == FALSE) {
2417 ACPI_UNLOCK(acpi);
2418 if (ACPI_SUCCESS(acpi_EnterSleepState(sc, sc->acpi_next_sstate))) {
2419 return (0);
2420 } else {
2421 return (ENXIO);
2422 }
2423 }
2424
2425 /* Now notify devd(8) also. */
2426 acpi_UserNotify("Suspend", ACPI_ROOT_OBJECT, state);
2427
2428 /*
2429 * Set a timeout to fire if userland doesn't ack the suspend request
2430 * in time. This way we still eventually go to sleep if we were
2431 * overheating or running low on battery, even if userland is hung.
2432 * We cancel this timeout once all userland acks are in or the
2433 * suspend request is aborted.
2434 */
2435 callout_reset(&sc->susp_force_to, 10 * hz, acpi_sleep_force, sc);
2436 ACPI_UNLOCK(acpi);
2437
2438 return (0);
2439 }
2440
2441 /*
2442 * Acknowledge (or reject) a pending sleep state. The caller has
2443 * prepared for suspend and is now ready for it to proceed. If the
2444 * error argument is non-zero, it indicates suspend should be cancelled
2445 * and gives an errno value describing why. Once all votes are in,
2446 * we suspend the system.
2447 */
2448 int
acpi_AckSleepState(struct apm_clone_data * clone,int error)2449 acpi_AckSleepState(struct apm_clone_data *clone, int error)
2450 {
2451 struct acpi_softc *sc;
2452 int ret, sleeping;
2453
2454 /* This platform does not support acpi suspend/resume. */
2455 return (EOPNOTSUPP);
2456
2457 /* If no pending sleep state, return an error. */
2458 ACPI_LOCK(acpi);
2459 sc = clone->acpi_sc;
2460 if (sc->acpi_next_sstate == 0) {
2461 ACPI_UNLOCK(acpi);
2462 return (ENXIO);
2463 }
2464
2465 /* Caller wants to abort suspend process. */
2466 if (error) {
2467 sc->acpi_next_sstate = 0;
2468 callout_stop(&sc->susp_force_to);
2469 device_printf(sc->acpi_dev,
2470 "listener on %s cancelled the pending suspend\n",
2471 devtoname(clone->cdev));
2472 ACPI_UNLOCK(acpi);
2473 return (0);
2474 }
2475
2476 /*
2477 * Mark this device as acking the suspend request. Then, walk through
2478 * all devices, seeing if they agree yet. We only count devices that
2479 * are writable since read-only devices couldn't ack the request.
2480 */
2481 clone->notify_status = APM_EV_ACKED;
2482 sleeping = TRUE;
2483 STAILQ_FOREACH(clone, &sc->apm_cdevs, entries) {
2484 if ((clone->flags & ACPI_EVF_WRITE) != 0 &&
2485 clone->notify_status != APM_EV_ACKED) {
2486 sleeping = FALSE;
2487 break;
2488 }
2489 }
2490
2491 /* If all devices have voted "yes", we will suspend now. */
2492 if (sleeping)
2493 callout_stop(&sc->susp_force_to);
2494 ACPI_UNLOCK(acpi);
2495 ret = 0;
2496 if (sleeping) {
2497 if (ACPI_FAILURE(acpi_EnterSleepState(sc, sc->acpi_next_sstate)))
2498 ret = ENODEV;
2499 }
2500
2501 return (ret);
2502 }
2503
2504 static void
acpi_sleep_enable(void * arg)2505 acpi_sleep_enable(void *arg)
2506 {
2507 ((struct acpi_softc *)arg)->acpi_sleep_disabled = 0;
2508 }
2509
2510 enum acpi_sleep_state {
2511 ACPI_SS_NONE,
2512 ACPI_SS_GPE_SET,
2513 ACPI_SS_DEV_SUSPEND,
2514 ACPI_SS_SLP_PREP,
2515 ACPI_SS_SLEPT,
2516 };
2517
2518 /*
2519 * Enter the desired system sleep state.
2520 *
2521 * Currently we support S1-S5 but S4 is only S4BIOS
2522 */
2523 static ACPI_STATUS
acpi_EnterSleepState(struct acpi_softc * sc,int state)2524 acpi_EnterSleepState(struct acpi_softc *sc, int state)
2525 {
2526 ACPI_STATUS status;
2527 UINT8 TypeA;
2528 UINT8 TypeB;
2529 enum acpi_sleep_state slp_state;
2530
2531 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2532
2533 /* Re-entry once we're suspending is not allowed. */
2534 status = AE_OK;
2535 ACPI_LOCK(acpi);
2536 if (sc->acpi_sleep_disabled) {
2537 ACPI_UNLOCK(acpi);
2538 device_printf(sc->acpi_dev,
2539 "suspend request ignored (not ready yet)\n");
2540 return (AE_ERROR);
2541 }
2542 sc->acpi_sleep_disabled = 1;
2543 ACPI_UNLOCK(acpi);
2544
2545 /*
2546 * Be sure to hold Giant across DEVICE_SUSPEND/RESUME since non-MPSAFE
2547 * drivers need this.
2548 */
2549 //get_mplock();
2550
2551 slp_state = ACPI_SS_NONE;
2552 switch (state) {
2553 case ACPI_STATE_S1:
2554 case ACPI_STATE_S2:
2555 case ACPI_STATE_S3:
2556 case ACPI_STATE_S4:
2557 status = AcpiGetSleepTypeData(state, &TypeA, &TypeB);
2558 if (status == AE_NOT_FOUND) {
2559 device_printf(sc->acpi_dev,
2560 "Sleep state S%d not supported by BIOS\n", state);
2561 break;
2562 } else if (ACPI_FAILURE(status)) {
2563 device_printf(sc->acpi_dev, "AcpiGetSleepTypeData failed - %s\n",
2564 AcpiFormatException(status));
2565 break;
2566 }
2567
2568 sc->acpi_sstate = state;
2569
2570 /* Enable any GPEs as appropriate and requested by the user. */
2571 acpi_wake_prep_walk(state);
2572 slp_state = ACPI_SS_GPE_SET;
2573
2574 /*
2575 * Inform all devices that we are going to sleep. If at least one
2576 * device fails, DEVICE_SUSPEND() automatically resumes the tree.
2577 *
2578 * XXX Note that a better two-pass approach with a 'veto' pass
2579 * followed by a "real thing" pass would be better, but the current
2580 * bus interface does not provide for this.
2581 */
2582 if (DEVICE_SUSPEND(root_bus) != 0) {
2583 device_printf(sc->acpi_dev, "device_suspend failed\n");
2584 break;
2585 }
2586 slp_state = ACPI_SS_DEV_SUSPEND;
2587
2588 /* If testing device suspend only, back out of everything here. */
2589 if (acpi_susp_bounce)
2590 break;
2591
2592 status = AcpiEnterSleepStatePrep(state);
2593 if (ACPI_FAILURE(status)) {
2594 device_printf(sc->acpi_dev, "AcpiEnterSleepStatePrep failed - %s\n",
2595 AcpiFormatException(status));
2596 break;
2597 }
2598 slp_state = ACPI_SS_SLP_PREP;
2599
2600 if (sc->acpi_sleep_delay > 0)
2601 DELAY(sc->acpi_sleep_delay * 1000000);
2602
2603 if (state != ACPI_STATE_S1) {
2604 acpi_sleep_machdep(sc, state);
2605
2606 /* Re-enable ACPI hardware on wakeup from sleep state 4. */
2607 if (state == ACPI_STATE_S4)
2608 AcpiEnable();
2609 } else {
2610 ACPI_DISABLE_IRQS();
2611 status = AcpiEnterSleepState(state);
2612 if (ACPI_FAILURE(status)) {
2613 device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n",
2614 AcpiFormatException(status));
2615 break;
2616 }
2617 }
2618 slp_state = ACPI_SS_SLEPT;
2619 break;
2620 case ACPI_STATE_S5:
2621 /*
2622 * Shut down cleanly and power off. This will call us back through the
2623 * shutdown handlers.
2624 */
2625 shutdown_nice(RB_POWEROFF);
2626 break;
2627 case ACPI_STATE_S0:
2628 default:
2629 status = AE_BAD_PARAMETER;
2630 break;
2631 }
2632
2633 /*
2634 * Back out state according to how far along we got in the suspend
2635 * process. This handles both the error and success cases.
2636 */
2637 sc->acpi_next_sstate = 0;
2638 if (slp_state >= ACPI_SS_GPE_SET) {
2639 acpi_wake_prep_walk(state);
2640 sc->acpi_sstate = ACPI_STATE_S0;
2641 }
2642 if (slp_state >= ACPI_SS_SLP_PREP)
2643 AcpiLeaveSleepState(state);
2644 if (slp_state >= ACPI_SS_DEV_SUSPEND)
2645 DEVICE_RESUME(root_bus);
2646 if (slp_state >= ACPI_SS_SLEPT)
2647 acpi_enable_fixed_events(sc);
2648
2649 /* Allow another sleep request after a while. */
2650 /* XXX: needs timeout */
2651 if (state != ACPI_STATE_S5)
2652 acpi_sleep_enable(sc);
2653
2654 /* Run /etc/rc.resume after we are back. */
2655 acpi_UserNotify("Resume", ACPI_ROOT_OBJECT, state);
2656
2657 //rel_mplock();
2658
2659 return_ACPI_STATUS (status);
2660 }
2661
2662 /* Enable or disable the device's GPE. */
2663 int
acpi_wake_set_enable(device_t dev,int enable)2664 acpi_wake_set_enable(device_t dev, int enable)
2665 {
2666 struct acpi_prw_data prw;
2667 ACPI_STATUS status;
2668 int flags;
2669
2670 /* Make sure the device supports waking the system and get the GPE. */
2671 if (acpi_parse_prw(acpi_get_handle(dev), &prw) != 0)
2672 return (ENXIO);
2673
2674 flags = acpi_get_flags(dev);
2675 if (enable) {
2676 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2677 ACPI_GPE_ENABLE);
2678 if (ACPI_FAILURE(status)) {
2679 device_printf(dev, "enable wake failed\n");
2680 return (ENXIO);
2681 }
2682 acpi_set_flags(dev, flags | ACPI_FLAG_WAKE_ENABLED);
2683 } else {
2684 status = AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit,
2685 ACPI_GPE_DISABLE);
2686 if (ACPI_FAILURE(status)) {
2687 device_printf(dev, "disable wake failed\n");
2688 return (ENXIO);
2689 }
2690 acpi_set_flags(dev, flags & ~ACPI_FLAG_WAKE_ENABLED);
2691 }
2692
2693 return (0);
2694 }
2695
2696 static int
acpi_wake_sleep_prep(ACPI_HANDLE handle,int sstate)2697 acpi_wake_sleep_prep(ACPI_HANDLE handle, int sstate)
2698 {
2699 struct acpi_prw_data prw;
2700 device_t dev;
2701
2702 /* Check that this is a wake-capable device and get its GPE. */
2703 if (acpi_parse_prw(handle, &prw) != 0)
2704 return (ENXIO);
2705 dev = acpi_get_device(handle);
2706
2707 /*
2708 * The destination sleep state must be less than (i.e., higher power)
2709 * or equal to the value specified by _PRW. If this GPE cannot be
2710 * enabled for the next sleep state, then disable it. If it can and
2711 * the user requested it be enabled, turn on any required power resources
2712 * and set _PSW.
2713 */
2714 if (sstate > prw.lowest_wake) {
2715 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_DISABLE);
2716 if (bootverbose)
2717 device_printf(dev, "wake_prep disabled wake for %s (S%d)\n",
2718 acpi_name(handle), sstate);
2719 } else if (dev && (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) != 0) {
2720 acpi_pwr_wake_enable(handle, 1);
2721 acpi_SetInteger(handle, "_PSW", 1);
2722 if (bootverbose)
2723 device_printf(dev, "wake_prep enabled for %s (S%d)\n",
2724 acpi_name(handle), sstate);
2725 }
2726
2727 return (0);
2728 }
2729
2730 static int
acpi_wake_run_prep(ACPI_HANDLE handle,int sstate)2731 acpi_wake_run_prep(ACPI_HANDLE handle, int sstate)
2732 {
2733 struct acpi_prw_data prw;
2734 device_t dev;
2735
2736 /*
2737 * Check that this is a wake-capable device and get its GPE. Return
2738 * now if the user didn't enable this device for wake.
2739 */
2740 if (acpi_parse_prw(handle, &prw) != 0)
2741 return (ENXIO);
2742 dev = acpi_get_device(handle);
2743 if (dev == NULL || (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) == 0)
2744 return (0);
2745
2746 /*
2747 * If this GPE couldn't be enabled for the previous sleep state, it was
2748 * disabled before going to sleep so re-enable it. If it was enabled,
2749 * clear _PSW and turn off any power resources it used.
2750 */
2751 if (sstate > prw.lowest_wake) {
2752 AcpiSetGpeWakeMask(prw.gpe_handle, prw.gpe_bit, ACPI_GPE_ENABLE);
2753 if (bootverbose)
2754 device_printf(dev, "run_prep re-enabled %s\n", acpi_name(handle));
2755 } else {
2756 acpi_SetInteger(handle, "_PSW", 0);
2757 acpi_pwr_wake_enable(handle, 0);
2758 if (bootverbose)
2759 device_printf(dev, "run_prep cleaned up for %s\n",
2760 acpi_name(handle));
2761 }
2762
2763 return (0);
2764 }
2765
2766 static ACPI_STATUS
acpi_wake_prep(ACPI_HANDLE handle,UINT32 level,void * context,void ** status)2767 acpi_wake_prep(ACPI_HANDLE handle, UINT32 level, void *context, void **status)
2768 {
2769 int sstate;
2770
2771 /* If suspending, run the sleep prep function, otherwise wake. */
2772 sstate = *(int *)context;
2773 if (AcpiGbl_SystemAwakeAndRunning)
2774 acpi_wake_sleep_prep(handle, sstate);
2775 else
2776 acpi_wake_run_prep(handle, sstate);
2777 return (AE_OK);
2778 }
2779
2780 /* Walk the tree rooted at acpi0 to prep devices for suspend/resume. */
2781 static int
acpi_wake_prep_walk(int sstate)2782 acpi_wake_prep_walk(int sstate)
2783 {
2784 ACPI_HANDLE sb_handle;
2785
2786 if (ACPI_SUCCESS(AcpiGetHandle(ACPI_ROOT_OBJECT, "\\_SB_", &sb_handle))) {
2787 AcpiWalkNamespace(ACPI_TYPE_DEVICE, sb_handle, 100,
2788 acpi_wake_prep, NULL, &sstate, NULL);
2789 }
2790 return (0);
2791 }
2792
2793 /* Walk the tree rooted at acpi0 to attach per-device wake sysctls. */
2794 static int
acpi_wake_sysctl_walk(device_t dev)2795 acpi_wake_sysctl_walk(device_t dev)
2796 {
2797 #ifdef notyet
2798 int error, i, numdevs;
2799 device_t *devlist;
2800 device_t child;
2801 ACPI_STATUS status;
2802
2803 error = device_get_children(dev, &devlist, &numdevs);
2804 if (error != 0 || numdevs == 0) {
2805 if (numdevs == 0)
2806 kfree(devlist, M_TEMP);
2807 return (error);
2808 }
2809 for (i = 0; i < numdevs; i++) {
2810 child = devlist[i];
2811 acpi_wake_sysctl_walk(child);
2812 if (!device_is_attached(child))
2813 continue;
2814 status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
2815 if (ACPI_SUCCESS(status)) {
2816 SYSCTL_ADD_PROC(device_get_sysctl_ctx(child),
2817 SYSCTL_CHILDREN(device_get_sysctl_tree(child)), OID_AUTO,
2818 "wake", CTLTYPE_INT | CTLFLAG_RW, child, 0,
2819 acpi_wake_set_sysctl, "I", "Device set to wake the system");
2820 }
2821 }
2822 kfree(devlist, M_TEMP);
2823 #endif
2824
2825 return (0);
2826 }
2827
2828 #ifdef notyet
2829 /* Enable or disable wake from userland. */
2830 static int
acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)2831 acpi_wake_set_sysctl(SYSCTL_HANDLER_ARGS)
2832 {
2833 int enable, error;
2834 device_t dev;
2835
2836 dev = (device_t)arg1;
2837 enable = (acpi_get_flags(dev) & ACPI_FLAG_WAKE_ENABLED) ? 1 : 0;
2838
2839 error = sysctl_handle_int(oidp, &enable, 0, req);
2840 if (error != 0 || req->newptr == NULL)
2841 return (error);
2842 if (enable != 0 && enable != 1)
2843 return (EINVAL);
2844
2845 return (acpi_wake_set_enable(dev, enable));
2846 }
2847 #endif
2848
2849 /* Parse a device's _PRW into a structure. */
2850 int
acpi_parse_prw(ACPI_HANDLE h,struct acpi_prw_data * prw)2851 acpi_parse_prw(ACPI_HANDLE h, struct acpi_prw_data *prw)
2852 {
2853 ACPI_STATUS status;
2854 ACPI_BUFFER prw_buffer;
2855 ACPI_OBJECT *res, *res2;
2856 int error, i, power_count;
2857
2858 if (h == NULL || prw == NULL)
2859 return (EINVAL);
2860
2861 /*
2862 * The _PRW object (7.2.9) is only required for devices that have the
2863 * ability to wake the system from a sleeping state.
2864 */
2865 error = EINVAL;
2866 prw_buffer.Pointer = NULL;
2867 prw_buffer.Length = ACPI_ALLOCATE_BUFFER;
2868 status = AcpiEvaluateObject(h, "_PRW", NULL, &prw_buffer);
2869 if (ACPI_FAILURE(status))
2870 return (ENOENT);
2871 res = (ACPI_OBJECT *)prw_buffer.Pointer;
2872 if (res == NULL)
2873 return (ENOENT);
2874 if (!ACPI_PKG_VALID(res, 2))
2875 goto out;
2876
2877 /*
2878 * Element 1 of the _PRW object:
2879 * The lowest power system sleeping state that can be entered while still
2880 * providing wake functionality. The sleeping state being entered must
2881 * be less than (i.e., higher power) or equal to this value.
2882 */
2883 if (acpi_PkgInt32(res, 1, &prw->lowest_wake) != 0)
2884 goto out;
2885
2886 /*
2887 * Element 0 of the _PRW object:
2888 */
2889 switch (res->Package.Elements[0].Type) {
2890 case ACPI_TYPE_INTEGER:
2891 /*
2892 * If the data type of this package element is numeric, then this
2893 * _PRW package element is the bit index in the GPEx_EN, in the
2894 * GPE blocks described in the FADT, of the enable bit that is
2895 * enabled for the wake event.
2896 */
2897 prw->gpe_handle = NULL;
2898 prw->gpe_bit = res->Package.Elements[0].Integer.Value;
2899 error = 0;
2900 break;
2901 case ACPI_TYPE_PACKAGE:
2902 /*
2903 * If the data type of this package element is a package, then this
2904 * _PRW package element is itself a package containing two
2905 * elements. The first is an object reference to the GPE Block
2906 * device that contains the GPE that will be triggered by the wake
2907 * event. The second element is numeric and it contains the bit
2908 * index in the GPEx_EN, in the GPE Block referenced by the
2909 * first element in the package, of the enable bit that is enabled for
2910 * the wake event.
2911 *
2912 * For example, if this field is a package then it is of the form:
2913 * Package() {\_SB.PCI0.ISA.GPE, 2}
2914 */
2915 res2 = &res->Package.Elements[0];
2916 if (!ACPI_PKG_VALID(res2, 2))
2917 goto out;
2918 prw->gpe_handle = acpi_GetReference(NULL, &res2->Package.Elements[0]);
2919 if (prw->gpe_handle == NULL)
2920 goto out;
2921 if (acpi_PkgInt32(res2, 1, &prw->gpe_bit) != 0)
2922 goto out;
2923 error = 0;
2924 break;
2925 default:
2926 goto out;
2927 }
2928
2929 /* Elements 2 to N of the _PRW object are power resources. */
2930 power_count = res->Package.Count - 2;
2931 if (power_count > ACPI_PRW_MAX_POWERRES) {
2932 kprintf("ACPI device %s has too many power resources\n", acpi_name(h));
2933 power_count = 0;
2934 }
2935 prw->power_res_count = power_count;
2936 for (i = 0; i < power_count; i++)
2937 prw->power_res[i] = res->Package.Elements[i];
2938
2939 out:
2940 if (prw_buffer.Pointer != NULL)
2941 AcpiOsFree(prw_buffer.Pointer);
2942 return (error);
2943 }
2944
2945 /*
2946 * ACPI Event Handlers
2947 */
2948
2949 /* System Event Handlers (registered by EVENTHANDLER_REGISTER) */
2950
2951 static void
acpi_system_eventhandler_sleep(void * arg,int state)2952 acpi_system_eventhandler_sleep(void *arg, int state)
2953 {
2954 struct acpi_softc *sc;
2955 int ret;
2956
2957 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2958
2959 sc = arg;
2960
2961 /* Check if button action is disabled. */
2962 if (state == ACPI_S_STATES_MAX + 1)
2963 return;
2964
2965 /* Request that the system prepare to enter the given suspend state. */
2966 ret = acpi_ReqSleepState((struct acpi_softc *)arg, state);
2967 if (ret != 0)
2968 device_printf(sc->acpi_dev,
2969 "request to enter state S%d failed (err %d)\n", state, ret);
2970
2971 return_VOID;
2972 }
2973
2974 static void
acpi_system_eventhandler_wakeup(void * arg,int state)2975 acpi_system_eventhandler_wakeup(void *arg, int state)
2976 {
2977
2978 ACPI_FUNCTION_TRACE_U32((char *)(uintptr_t)__func__, state);
2979
2980 /* Currently, nothing to do for wakeup. */
2981
2982 return_VOID;
2983 }
2984
2985 /*
2986 * ACPICA Event Handlers (FixedEvent, also called from button notify handler)
2987 */
2988 UINT32
acpi_event_power_button_sleep(void * context)2989 acpi_event_power_button_sleep(void *context)
2990 {
2991 struct acpi_softc *sc = (struct acpi_softc *)context;
2992
2993 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
2994
2995 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_power_button_sx);
2996
2997 return_VALUE (ACPI_INTERRUPT_HANDLED);
2998 }
2999
3000 UINT32
acpi_event_power_button_wake(void * context)3001 acpi_event_power_button_wake(void *context)
3002 {
3003 struct acpi_softc *sc = (struct acpi_softc *)context;
3004
3005 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3006
3007 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_power_button_sx);
3008
3009 return_VALUE (ACPI_INTERRUPT_HANDLED);
3010 }
3011
3012 UINT32
acpi_event_sleep_button_sleep(void * context)3013 acpi_event_sleep_button_sleep(void *context)
3014 {
3015 struct acpi_softc *sc = (struct acpi_softc *)context;
3016
3017 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3018
3019 EVENTHANDLER_INVOKE(acpi_sleep_event, sc->acpi_sleep_button_sx);
3020
3021 return_VALUE (ACPI_INTERRUPT_HANDLED);
3022 }
3023
3024 UINT32
acpi_event_sleep_button_wake(void * context)3025 acpi_event_sleep_button_wake(void *context)
3026 {
3027 struct acpi_softc *sc = (struct acpi_softc *)context;
3028
3029 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
3030
3031 EVENTHANDLER_INVOKE(acpi_wakeup_event, sc->acpi_sleep_button_sx);
3032
3033 return_VALUE (ACPI_INTERRUPT_HANDLED);
3034 }
3035
3036 /*
3037 * XXX This static buffer is suboptimal. There is no locking so only
3038 * use this for single-threaded callers.
3039 */
3040 char *
acpi_name(ACPI_HANDLE handle)3041 acpi_name(ACPI_HANDLE handle)
3042 {
3043 ACPI_BUFFER buf;
3044 static char data[256];
3045
3046 buf.Length = sizeof(data);
3047 buf.Pointer = data;
3048
3049 if (handle && ACPI_SUCCESS(AcpiGetName(handle, ACPI_FULL_PATHNAME, &buf)))
3050 return (data);
3051 return ("(unknown)");
3052 }
3053
3054 /*
3055 * Debugging/bug-avoidance. Avoid trying to fetch info on various
3056 * parts of the namespace.
3057 */
3058 int
acpi_avoid(ACPI_HANDLE handle)3059 acpi_avoid(ACPI_HANDLE handle)
3060 {
3061 char *cp, *env, *np;
3062 int len;
3063
3064 np = acpi_name(handle);
3065 if (*np == '\\')
3066 np++;
3067 if ((env = kgetenv("debug.acpi.avoid")) == NULL)
3068 return (0);
3069
3070 /* Scan the avoid list checking for a match */
3071 cp = env;
3072 for (;;) {
3073 while (*cp != 0 && isspace(*cp))
3074 cp++;
3075 if (*cp == 0)
3076 break;
3077 len = 0;
3078 while (cp[len] != 0 && !isspace(cp[len]))
3079 len++;
3080 if (!strncmp(cp, np, len)) {
3081 kfreeenv(env);
3082 return(1);
3083 }
3084 cp += len;
3085 }
3086 kfreeenv(env);
3087
3088 return (0);
3089 }
3090
3091 /*
3092 * Debugging/bug-avoidance. Disable ACPI subsystem components.
3093 */
3094 int
acpi_disabled(char * subsys)3095 acpi_disabled(char *subsys)
3096 {
3097 char *cp, *env;
3098 int len;
3099
3100 if ((env = kgetenv("debug.acpi.disabled")) == NULL)
3101 return (0);
3102 if (strcmp(env, "all") == 0) {
3103 kfreeenv(env);
3104 return (1);
3105 }
3106
3107 /* Scan the disable list, checking for a match. */
3108 cp = env;
3109 for (;;) {
3110 while (*cp != '\0' && isspace(*cp))
3111 cp++;
3112 if (*cp == '\0')
3113 break;
3114 len = 0;
3115 while (cp[len] != '\0' && !isspace(cp[len]))
3116 len++;
3117 if (strncmp(cp, subsys, len) == 0) {
3118 kfreeenv(env);
3119 return (1);
3120 }
3121 cp += len;
3122 }
3123 kfreeenv(env);
3124
3125 return (0);
3126 }
3127
3128 /*
3129 * Debugging/bug-avoidance. Enable ACPI subsystem components. Most
3130 * components are enabled by default. The ones that are not have to be
3131 * enabled via debug.acpi.enabled.
3132 */
3133 int
acpi_enabled(char * subsys)3134 acpi_enabled(char *subsys)
3135 {
3136 char *cp, *env;
3137 int len;
3138
3139 if ((env = kgetenv("debug.acpi.enabled")) == NULL)
3140 return (0);
3141 if (strcmp(env, "all") == 0) {
3142 kfreeenv(env);
3143 return (1);
3144 }
3145
3146 /* Scan the enable list, checking for a match. */
3147 cp = env;
3148 for (;;) {
3149 while (*cp != '\0' && isspace(*cp))
3150 cp++;
3151 if (*cp == '\0')
3152 break;
3153 len = 0;
3154 while (cp[len] != '\0' && !isspace(cp[len]))
3155 len++;
3156 if (strncmp(cp, subsys, len) == 0) {
3157 kfreeenv(env);
3158 return (1);
3159 }
3160 cp += len;
3161 }
3162 kfreeenv(env);
3163
3164 return (0);
3165 }
3166
3167 /*
3168 * Control interface.
3169 *
3170 * We multiplex ioctls for all participating ACPI devices here. Individual
3171 * drivers wanting to be accessible via /dev/acpi should use the
3172 * register/deregister interface to make their handlers visible.
3173 */
3174 struct acpi_ioctl_hook
3175 {
3176 TAILQ_ENTRY(acpi_ioctl_hook) link;
3177 u_long cmd;
3178 acpi_ioctl_fn fn;
3179 void *arg;
3180 };
3181
3182 static TAILQ_HEAD(,acpi_ioctl_hook) acpi_ioctl_hooks;
3183 static int acpi_ioctl_hooks_initted;
3184
3185 int
acpi_register_ioctl(u_long cmd,acpi_ioctl_fn fn,void * arg)3186 acpi_register_ioctl(u_long cmd, acpi_ioctl_fn fn, void *arg)
3187 {
3188 struct acpi_ioctl_hook *hp;
3189
3190 if ((hp = kmalloc(sizeof(*hp), M_ACPIDEV, M_NOWAIT)) == NULL)
3191 return (ENOMEM);
3192 hp->cmd = cmd;
3193 hp->fn = fn;
3194 hp->arg = arg;
3195
3196 ACPI_LOCK(acpi);
3197 if (acpi_ioctl_hooks_initted == 0) {
3198 TAILQ_INIT(&acpi_ioctl_hooks);
3199 acpi_ioctl_hooks_initted = 1;
3200 }
3201 TAILQ_INSERT_TAIL(&acpi_ioctl_hooks, hp, link);
3202 ACPI_UNLOCK(acpi);
3203
3204 return (0);
3205 }
3206
3207 void
acpi_deregister_ioctl(u_long cmd,acpi_ioctl_fn fn)3208 acpi_deregister_ioctl(u_long cmd, acpi_ioctl_fn fn)
3209 {
3210 struct acpi_ioctl_hook *hp;
3211
3212 ACPI_LOCK(acpi);
3213 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link)
3214 if (hp->cmd == cmd && hp->fn == fn)
3215 break;
3216
3217 if (hp != NULL) {
3218 TAILQ_REMOVE(&acpi_ioctl_hooks, hp, link);
3219 kfree(hp, M_ACPIDEV);
3220 }
3221 ACPI_UNLOCK(acpi);
3222 }
3223
3224 static int
acpiopen(struct dev_open_args * ap)3225 acpiopen(struct dev_open_args *ap)
3226 {
3227 return (0);
3228 }
3229
3230 static int
acpiclose(struct dev_close_args * ap)3231 acpiclose(struct dev_close_args *ap)
3232 {
3233 return (0);
3234 }
3235
3236 static void
acpi_free_object_list(ACPI_OBJECT_LIST * list)3237 acpi_free_object_list(ACPI_OBJECT_LIST *list)
3238 {
3239 for (int i = 0; i < list->Count; i++) {
3240 switch (list->Pointer[i].Type) {
3241 case ACPI_TYPE_STRING:
3242 AcpiOsFree(list->Pointer[i].String.Pointer);
3243 break;
3244 case ACPI_TYPE_BUFFER:
3245 AcpiOsFree(list->Pointer[i].Buffer.Pointer);
3246 break;
3247 default:
3248 break;
3249 }
3250 }
3251 AcpiOsFree(list);
3252 }
3253
3254 static ACPI_OBJECT_LIST *
acpi_copyin_object_list(ACPI_OBJECT_LIST * src)3255 acpi_copyin_object_list(ACPI_OBJECT_LIST *src)
3256 {
3257 ACPI_OBJECT_LIST *dest;
3258 BOOLEAN failed;
3259
3260 if (src->Count > 7)
3261 return NULL;
3262
3263 dest = AcpiOsAllocate(sizeof(ACPI_OBJECT_LIST) + sizeof(ACPI_OBJECT) * src->Count);
3264 if (!dest)
3265 return NULL;
3266
3267 dest->Count = src->Count;
3268 dest->Pointer = (ACPI_OBJECT *)(dest + 1);
3269 if (copyin(src->Pointer, dest->Pointer, sizeof(ACPI_OBJECT) * dest->Count)) {
3270 AcpiOsFree(dest);
3271 return NULL;
3272 }
3273
3274 failed = FALSE;
3275
3276 for (int i = 0; i < dest->Count; i++) {
3277 switch (dest->Pointer[i].Type) {
3278 case ACPI_TYPE_INTEGER:
3279 break;
3280 case ACPI_TYPE_STRING: {
3281 void *v = AcpiOsAllocate(dest->Pointer[i].String.Length);
3282 if (!v || copyin(dest->Pointer[i].String.Pointer, v, dest->Pointer[i].String.Length))
3283 failed = TRUE;
3284 dest->Pointer[i].String.Pointer = v;
3285 break;
3286 }
3287 case ACPI_TYPE_BUFFER: {
3288 void *v = AcpiOsAllocate(dest->Pointer[i].Buffer.Length);
3289 if (!v || copyin(dest->Pointer[i].Buffer.Pointer, v, dest->Pointer[i].Buffer.Length))
3290 failed = TRUE;
3291 dest->Pointer[i].String.Pointer = v;
3292 break;
3293 }
3294 default:
3295 failed = TRUE;
3296 break;
3297 }
3298 }
3299
3300 if (failed) {
3301 acpi_free_object_list(dest);
3302 dest = NULL;
3303 }
3304
3305 return dest;
3306 }
3307
3308 static int
acpi_call_ioctl(caddr_t addr)3309 acpi_call_ioctl(caddr_t addr)
3310 {
3311 struct acpi_mcall_ioctl_arg *params;
3312 ACPI_OBJECT_LIST *args;
3313 ACPI_BUFFER result;
3314 char path[256];
3315
3316 result.Length = ACPI_ALLOCATE_BUFFER;
3317 result.Pointer = NULL;
3318
3319 params = (struct acpi_mcall_ioctl_arg *)addr;
3320 args = acpi_copyin_object_list(¶ms->args);
3321 if (!args)
3322 return EINVAL;
3323 if (copyinstr(params->path, path, sizeof(path), NULL))
3324 return EINVAL;
3325 params->retval = AcpiEvaluateObject(NULL, path, args, &result);
3326 if (ACPI_SUCCESS(params->retval)) {
3327 if (result.Pointer != NULL) {
3328 if (params->result.Pointer != NULL) {
3329 params->result.Length = min(params->result.Length,
3330 result.Length);
3331 if (result.Length >= sizeof(ACPI_OBJECT)) {
3332 acpi_call_fixup_pointers((ACPI_OBJECT *)result.Pointer,
3333 params->result.Pointer);
3334 }
3335 copyout(result.Pointer, params->result.Pointer,
3336 params->result.Length);
3337 params->reslen = result.Length;
3338 }
3339 AcpiOsFree(result.Pointer);
3340 }
3341 }
3342 acpi_free_object_list(args);
3343
3344 return (0);
3345 }
3346
3347 void
acpi_call_fixup_pointers(ACPI_OBJECT * p,UINT8 * dest)3348 acpi_call_fixup_pointers(ACPI_OBJECT *p, UINT8 *dest)
3349 {
3350 switch (p->Type) {
3351 case ACPI_TYPE_STRING:
3352 p->String.Pointer += dest - (UINT8 *)p;
3353 break;
3354 case ACPI_TYPE_BUFFER:
3355 p->Buffer.Pointer += dest - (UINT8 *)p;
3356 break;
3357 }
3358 }
3359
3360 static int
acpiioctl(struct dev_ioctl_args * ap)3361 acpiioctl(struct dev_ioctl_args *ap)
3362 {
3363 struct acpi_softc *sc;
3364 struct acpi_ioctl_hook *hp;
3365 int error, state;
3366
3367 error = 0;
3368 hp = NULL;
3369 sc = ap->a_head.a_dev->si_drv1;
3370
3371 /*
3372 * Scan the list of registered ioctls, looking for handlers.
3373 */
3374 lwkt_gettoken(&acpi_token);
3375 ACPI_LOCK(acpi);
3376 if (acpi_ioctl_hooks_initted) {
3377 TAILQ_FOREACH(hp, &acpi_ioctl_hooks, link) {
3378 if (hp->cmd == ap->a_cmd)
3379 break;
3380 }
3381 }
3382 ACPI_UNLOCK(acpi);
3383 if (hp) {
3384 error = hp->fn(ap->a_cmd, ap->a_data, hp->arg);
3385 lwkt_reltoken(&acpi_token);
3386 return error;
3387 }
3388
3389 /*
3390 * Core ioctls are not permitted for non-writable user.
3391 * Currently, other ioctls just fetch information.
3392 * Not changing system behavior.
3393 */
3394 if ((ap->a_fflag & FWRITE) == 0) {
3395 lwkt_reltoken(&acpi_token);
3396 return (EPERM);
3397 }
3398
3399 /* Core system ioctls. */
3400 switch (ap->a_cmd) {
3401 case ACPIIO_REQSLPSTATE:
3402 state = *(int *)ap->a_data;
3403 if (state != ACPI_STATE_S5)
3404 error = acpi_ReqSleepState(sc, state);
3405 else {
3406 device_printf(sc->acpi_dev,
3407 "power off via acpi ioctl not supported\n");
3408 error = ENXIO;
3409 }
3410 break;
3411 case ACPIIO_ACKSLPSTATE:
3412 error = EOPNOTSUPP;
3413 #if 0 /* notyet */
3414 error = *(int *)ap->a_data;
3415 error = acpi_AckSleepState(sc->acpi_clone, error);
3416 #endif
3417 break;
3418 case ACPIIO_SETSLPSTATE: /* DEPRECATED */
3419 error = EINVAL;
3420 state = *(int *)ap->a_data;
3421 if (state >= ACPI_STATE_S0 && state <= ACPI_S_STATES_MAX)
3422 if (ACPI_SUCCESS(acpi_SetSleepState(sc, state)))
3423 error = 0;
3424 break;
3425 case ACPIIO_DO_MCALL:
3426 if (acpi_allow_mcall == 1) {
3427 error = acpi_call_ioctl(ap->a_data);
3428 } else {
3429 device_printf(sc->acpi_dev,
3430 "debug.acpi.allow_method_calls tunable must be set\n");
3431 error = ENXIO;
3432 }
3433 break;
3434 default:
3435 error = ENXIO;
3436 break;
3437 }
3438 lwkt_reltoken(&acpi_token);
3439
3440 return (error);
3441 }
3442
3443 static int
acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)3444 acpi_supported_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3445 {
3446 int error;
3447 struct sbuf sb;
3448 UINT8 state, TypeA, TypeB;
3449
3450 sbuf_new(&sb, NULL, 32, SBUF_AUTOEXTEND);
3451 for (state = ACPI_STATE_S1; state < ACPI_S_STATES_MAX + 1; state++)
3452 if (ACPI_SUCCESS(AcpiGetSleepTypeData(state, &TypeA, &TypeB)))
3453 sbuf_printf(&sb, "S%d ", state);
3454 sbuf_trim(&sb);
3455 sbuf_finish(&sb);
3456 error = sysctl_handle_string(oidp, sbuf_data(&sb), sbuf_len(&sb), req);
3457 sbuf_delete(&sb);
3458 return (error);
3459 }
3460
3461 static int
acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)3462 acpi_sleep_state_sysctl(SYSCTL_HANDLER_ARGS)
3463 {
3464 char sleep_state[10];
3465 int error;
3466 u_int new_state, old_state;
3467
3468 old_state = *(u_int *)oidp->oid_arg1;
3469 if (old_state > ACPI_S_STATES_MAX + 1)
3470 strlcpy(sleep_state, "unknown", sizeof(sleep_state));
3471 else
3472 strlcpy(sleep_state, sleep_state_names[old_state], sizeof(sleep_state));
3473 error = sysctl_handle_string(oidp, sleep_state, sizeof(sleep_state), req);
3474 if (error == 0 && req->newptr != NULL) {
3475 new_state = ACPI_STATE_S0;
3476 for (; new_state <= ACPI_S_STATES_MAX + 1; new_state++)
3477 if (strcmp(sleep_state, sleep_state_names[new_state]) == 0)
3478 break;
3479 if (new_state <= ACPI_S_STATES_MAX + 1) {
3480 if (new_state != old_state)
3481 *(u_int *)oidp->oid_arg1 = new_state;
3482 } else
3483 error = EINVAL;
3484 }
3485
3486 return (error);
3487 }
3488
3489 /* Inform devctl(4) when we receive a Notify. */
3490 void
acpi_UserNotify(const char * subsystem,ACPI_HANDLE h,uint8_t notify)3491 acpi_UserNotify(const char *subsystem, ACPI_HANDLE h, uint8_t notify)
3492 {
3493 char notify_buf[16];
3494 ACPI_BUFFER handle_buf;
3495 ACPI_STATUS status;
3496
3497 if (subsystem == NULL)
3498 return;
3499
3500 handle_buf.Pointer = NULL;
3501 handle_buf.Length = ACPI_ALLOCATE_BUFFER;
3502 status = AcpiNsHandleToPathname(h, &handle_buf, FALSE);
3503 if (ACPI_FAILURE(status))
3504 return;
3505 ksnprintf(notify_buf, sizeof(notify_buf), "notify=0x%02x", notify);
3506 devctl_notify("ACPI", subsystem, handle_buf.Pointer, notify_buf);
3507 AcpiOsFree(handle_buf.Pointer);
3508 }
3509
3510 #ifdef ACPI_DEBUG
3511 /*
3512 * Support for parsing debug options from the kernel environment.
3513 *
3514 * Bits may be set in the AcpiDbgLayer and AcpiDbgLevel debug registers
3515 * by specifying the names of the bits in the debug.acpi.layer and
3516 * debug.acpi.level environment variables. Bits may be unset by
3517 * prefixing the bit name with !.
3518 */
3519 struct debugtag
3520 {
3521 char *name;
3522 UINT32 value;
3523 };
3524
3525 static struct debugtag dbg_layer[] = {
3526 {"ACPI_UTILITIES", ACPI_UTILITIES},
3527 {"ACPI_HARDWARE", ACPI_HARDWARE},
3528 {"ACPI_EVENTS", ACPI_EVENTS},
3529 {"ACPI_TABLES", ACPI_TABLES},
3530 {"ACPI_NAMESPACE", ACPI_NAMESPACE},
3531 {"ACPI_PARSER", ACPI_PARSER},
3532 {"ACPI_DISPATCHER", ACPI_DISPATCHER},
3533 {"ACPI_EXECUTER", ACPI_EXECUTER},
3534 {"ACPI_RESOURCES", ACPI_RESOURCES},
3535 {"ACPI_CA_DEBUGGER", ACPI_CA_DEBUGGER},
3536 {"ACPI_OS_SERVICES", ACPI_OS_SERVICES},
3537 {"ACPI_CA_DISASSEMBLER", ACPI_CA_DISASSEMBLER},
3538 {"ACPI_ALL_COMPONENTS", ACPI_ALL_COMPONENTS},
3539
3540 {"ACPI_AC_ADAPTER", ACPI_AC_ADAPTER},
3541 {"ACPI_BATTERY", ACPI_BATTERY},
3542 {"ACPI_BUS", ACPI_BUS},
3543 {"ACPI_BUTTON", ACPI_BUTTON},
3544 {"ACPI_EC", ACPI_EC},
3545 {"ACPI_FAN", ACPI_FAN},
3546 {"ACPI_POWERRES", ACPI_POWERRES},
3547 {"ACPI_PROCESSOR", ACPI_PROCESSOR},
3548 {"ACPI_THERMAL", ACPI_THERMAL},
3549 {"ACPI_TIMER", ACPI_TIMER},
3550 {"ACPI_ALL_DRIVERS", ACPI_ALL_DRIVERS},
3551 {NULL, 0}
3552 };
3553
3554 static struct debugtag dbg_level[] = {
3555 {"ACPI_LV_INIT", ACPI_LV_INIT},
3556 {"ACPI_LV_DEBUG_OBJECT", ACPI_LV_DEBUG_OBJECT},
3557 {"ACPI_LV_INFO", ACPI_LV_INFO},
3558 {"ACPI_LV_REPAIR", ACPI_LV_REPAIR},
3559 {"ACPI_LV_ALL_EXCEPTIONS", ACPI_LV_ALL_EXCEPTIONS},
3560
3561 /* Trace verbosity level 1 [Standard Trace Level] */
3562 {"ACPI_LV_INIT_NAMES", ACPI_LV_INIT_NAMES},
3563 {"ACPI_LV_PARSE", ACPI_LV_PARSE},
3564 {"ACPI_LV_LOAD", ACPI_LV_LOAD},
3565 {"ACPI_LV_DISPATCH", ACPI_LV_DISPATCH},
3566 {"ACPI_LV_EXEC", ACPI_LV_EXEC},
3567 {"ACPI_LV_NAMES", ACPI_LV_NAMES},
3568 {"ACPI_LV_OPREGION", ACPI_LV_OPREGION},
3569 {"ACPI_LV_BFIELD", ACPI_LV_BFIELD},
3570 {"ACPI_LV_TABLES", ACPI_LV_TABLES},
3571 {"ACPI_LV_VALUES", ACPI_LV_VALUES},
3572 {"ACPI_LV_OBJECTS", ACPI_LV_OBJECTS},
3573 {"ACPI_LV_RESOURCES", ACPI_LV_RESOURCES},
3574 {"ACPI_LV_USER_REQUESTS", ACPI_LV_USER_REQUESTS},
3575 {"ACPI_LV_PACKAGE", ACPI_LV_PACKAGE},
3576 {"ACPI_LV_EVALUATION", ACPI_LV_EVALUATION},
3577 {"ACPI_LV_VERBOSITY1", ACPI_LV_VERBOSITY1},
3578
3579 /* Trace verbosity level 2 [Function tracing and memory allocation] */
3580 {"ACPI_LV_ALLOCATIONS", ACPI_LV_ALLOCATIONS},
3581 {"ACPI_LV_FUNCTIONS", ACPI_LV_FUNCTIONS},
3582 {"ACPI_LV_OPTIMIZATIONS", ACPI_LV_OPTIMIZATIONS},
3583 {"ACPI_LV_VERBOSITY2", ACPI_LV_VERBOSITY2},
3584 {"ACPI_LV_ALL", ACPI_LV_ALL},
3585
3586 /* Trace verbosity level 3 [Threading, I/O, and Interrupts] */
3587 {"ACPI_LV_MUTEX", ACPI_LV_MUTEX},
3588 {"ACPI_LV_THREADS", ACPI_LV_THREADS},
3589 {"ACPI_LV_IO", ACPI_LV_IO},
3590 {"ACPI_LV_INTERRUPTS", ACPI_LV_INTERRUPTS},
3591 {"ACPI_LV_VERBOSITY3", ACPI_LV_VERBOSITY3},
3592
3593 /* Exceptionally verbose output -- also used in the global "DebugLevel" */
3594 {"ACPI_LV_AML_DISASSEMBLE", ACPI_LV_AML_DISASSEMBLE},
3595 {"ACPI_LV_VERBOSE_INFO", ACPI_LV_VERBOSE_INFO},
3596 {"ACPI_LV_FULL_TABLES", ACPI_LV_FULL_TABLES},
3597 {"ACPI_LV_EVENTS", ACPI_LV_EVENTS},
3598 {"ACPI_LV_VERBOSE", ACPI_LV_VERBOSE},
3599 {NULL, 0}
3600 };
3601
3602 static void
acpi_parse_debug(char * cp,struct debugtag * tag,UINT32 * flag)3603 acpi_parse_debug(char *cp, struct debugtag *tag, UINT32 *flag)
3604 {
3605 char *ep;
3606 int i, l;
3607 int set;
3608
3609 while (*cp) {
3610 if (isspace(*cp)) {
3611 cp++;
3612 continue;
3613 }
3614 ep = cp;
3615 while (*ep && !isspace(*ep))
3616 ep++;
3617 if (*cp == '!') {
3618 set = 0;
3619 cp++;
3620 if (cp == ep)
3621 continue;
3622 } else {
3623 set = 1;
3624 }
3625 l = ep - cp;
3626 for (i = 0; tag[i].name != NULL; i++) {
3627 if (!strncmp(cp, tag[i].name, l)) {
3628 if (set)
3629 *flag |= tag[i].value;
3630 else
3631 *flag &= ~tag[i].value;
3632 }
3633 }
3634 cp = ep;
3635 }
3636 }
3637
3638 static void
acpi_set_debugging(void * junk)3639 acpi_set_debugging(void *junk)
3640 {
3641 char *layer, *level;
3642
3643 if (cold) {
3644 AcpiDbgLayer = 0;
3645 AcpiDbgLevel = 0;
3646 }
3647
3648 layer = kgetenv("debug.acpi.layer");
3649 level = kgetenv("debug.acpi.level");
3650 if (layer == NULL && level == NULL)
3651 return;
3652
3653 kprintf("ACPI set debug");
3654 if (layer != NULL) {
3655 if (strcmp("NONE", layer) != 0)
3656 kprintf(" layer '%s'", layer);
3657 acpi_parse_debug(layer, &dbg_layer[0], &AcpiDbgLayer);
3658 kfreeenv(layer);
3659 }
3660 if (level != NULL) {
3661 if (strcmp("NONE", level) != 0)
3662 kprintf(" level '%s'", level);
3663 acpi_parse_debug(level, &dbg_level[0], &AcpiDbgLevel);
3664 kfreeenv(level);
3665 }
3666 kprintf("\n");
3667 }
3668
3669 SYSINIT(acpi_debugging, SI_BOOT1_TUNABLES, SI_ORDER_ANY, acpi_set_debugging,
3670 NULL);
3671
3672 static int
acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)3673 acpi_debug_sysctl(SYSCTL_HANDLER_ARGS)
3674 {
3675 int error, *dbg;
3676 struct debugtag *tag;
3677 struct sbuf sb;
3678
3679 if (sbuf_new(&sb, NULL, 128, SBUF_AUTOEXTEND) == NULL)
3680 return (ENOMEM);
3681 if (strcmp(oidp->oid_arg1, "debug.acpi.layer") == 0) {
3682 tag = &dbg_layer[0];
3683 dbg = &AcpiDbgLayer;
3684 } else {
3685 tag = &dbg_level[0];
3686 dbg = &AcpiDbgLevel;
3687 }
3688
3689 /* Get old values if this is a get request. */
3690 ACPI_SERIAL_BEGIN(acpi);
3691 if (*dbg == 0) {
3692 sbuf_cpy(&sb, "NONE");
3693 } else if (req->newptr == NULL) {
3694 for (; tag->name != NULL; tag++) {
3695 if ((*dbg & tag->value) == tag->value)
3696 sbuf_printf(&sb, "%s ", tag->name);
3697 }
3698 }
3699 sbuf_trim(&sb);
3700 sbuf_finish(&sb);
3701
3702 /* Copy out the old values to the user. */
3703 error = SYSCTL_OUT(req, sbuf_data(&sb), sbuf_len(&sb));
3704 sbuf_delete(&sb);
3705
3706 /* If the user is setting a string, parse it. */
3707 if (error == 0 && req->newptr != NULL) {
3708 *dbg = 0;
3709 ksetenv((char *)oidp->oid_arg1, (char *)req->newptr);
3710 acpi_set_debugging(NULL);
3711 }
3712 ACPI_SERIAL_END(acpi);
3713
3714 return (error);
3715 }
3716
3717 SYSCTL_PROC(_debug_acpi, OID_AUTO, layer, CTLFLAG_RW | CTLTYPE_STRING,
3718 "debug.acpi.layer", 0, acpi_debug_sysctl, "A", "");
3719 SYSCTL_PROC(_debug_acpi, OID_AUTO, level, CTLFLAG_RW | CTLTYPE_STRING,
3720 "debug.acpi.level", 0, acpi_debug_sysctl, "A", "");
3721 #endif /* ACPI_DEBUG */
3722
3723 static int
acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)3724 acpi_debug_objects_sysctl(SYSCTL_HANDLER_ARGS)
3725 {
3726 int error;
3727 int old;
3728
3729 old = acpi_debug_objects;
3730 error = sysctl_handle_int(oidp, &acpi_debug_objects, 0, req);
3731 if (error != 0 || req->newptr == NULL)
3732 return (error);
3733 if (old == acpi_debug_objects || (old && acpi_debug_objects))
3734 return (0);
3735
3736 ACPI_SERIAL_BEGIN(acpi);
3737 AcpiGbl_EnableAmlDebugObject = acpi_debug_objects ? TRUE : FALSE;
3738 ACPI_SERIAL_END(acpi);
3739
3740 return (0);
3741 }
3742
3743
3744 static int
acpi_parse_interfaces(char * str,struct acpi_interface * iface)3745 acpi_parse_interfaces(char *str, struct acpi_interface *iface)
3746 {
3747 char *p;
3748 size_t len;
3749 int i, j;
3750
3751 p = str;
3752 while (isspace(*p) || *p == ',')
3753 p++;
3754 len = strlen(p);
3755 if (len == 0)
3756 return (0);
3757 p = kstrdup(p, M_TEMP);
3758 for (i = 0; i < len; i++)
3759 if (p[i] == ',')
3760 p[i] = '\0';
3761 i = j = 0;
3762 while (i < len)
3763 if (isspace(p[i]) || p[i] == '\0')
3764 i++;
3765 else {
3766 i += strlen(p + i) + 1;
3767 j++;
3768 }
3769 if (j == 0) {
3770 kfree(p, M_TEMP);
3771 return (0);
3772 }
3773 iface->data = kmalloc(sizeof(*iface->data) * j, M_TEMP, M_WAITOK);
3774 iface->num = j;
3775 i = j = 0;
3776 while (i < len)
3777 if (isspace(p[i]) || p[i] == '\0')
3778 i++;
3779 else {
3780 iface->data[j] = p + i;
3781 i += strlen(p + i) + 1;
3782 j++;
3783 }
3784
3785 return (j);
3786 }
3787
3788 static void
acpi_free_interfaces(struct acpi_interface * iface)3789 acpi_free_interfaces(struct acpi_interface *iface)
3790 {
3791 kfree(iface->data[0], M_TEMP);
3792 kfree(iface->data, M_TEMP);
3793 }
3794
3795 static void
acpi_reset_interfaces(device_t dev)3796 acpi_reset_interfaces(device_t dev)
3797 {
3798 struct acpi_interface list;
3799 ACPI_STATUS status;
3800 int i;
3801
3802 if (acpi_parse_interfaces(acpi_install_interface, &list) > 0) {
3803 for (i = 0; i < list.num; i++) {
3804 status = AcpiInstallInterface(list.data[i]);
3805 if (ACPI_FAILURE(status))
3806 device_printf(dev,
3807 "failed to install _OSI(\"%s\"): %s\n",
3808 list.data[i], AcpiFormatException(status));
3809 else if (bootverbose)
3810 device_printf(dev, "installed _OSI(\"%s\")\n",
3811 list.data[i]);
3812 }
3813 acpi_free_interfaces(&list);
3814 }
3815 if (acpi_parse_interfaces(acpi_remove_interface, &list) > 0) {
3816 for (i = 0; i < list.num; i++) {
3817 status = AcpiRemoveInterface(list.data[i]);
3818 if (ACPI_FAILURE(status))
3819 device_printf(dev,
3820 "failed to remove _OSI(\"%s\"): %s\n",
3821 list.data[i], AcpiFormatException(status));
3822 else if (bootverbose)
3823 device_printf(dev, "removed _OSI(\"%s\")\n",
3824 list.data[i]);
3825 }
3826 acpi_free_interfaces(&list);
3827 }
3828 }
3829
3830 static int
acpi_pm_func(u_long cmd,void * arg,...)3831 acpi_pm_func(u_long cmd, void *arg, ...)
3832 {
3833 int state, acpi_state;
3834 int error;
3835 struct acpi_softc *sc;
3836 __va_list ap;
3837
3838 error = 0;
3839 switch (cmd) {
3840 case POWER_CMD_SUSPEND:
3841 sc = (struct acpi_softc *)arg;
3842 if (sc == NULL) {
3843 error = EINVAL;
3844 goto out;
3845 }
3846
3847 __va_start(ap, arg);
3848 state = __va_arg(ap, int);
3849 __va_end(ap);
3850
3851 switch (state) {
3852 case POWER_SLEEP_STATE_STANDBY:
3853 acpi_state = sc->acpi_standby_sx;
3854 break;
3855 case POWER_SLEEP_STATE_SUSPEND:
3856 acpi_state = sc->acpi_suspend_sx;
3857 break;
3858 case POWER_SLEEP_STATE_HIBERNATE:
3859 acpi_state = ACPI_STATE_S4;
3860 break;
3861 default:
3862 error = EINVAL;
3863 goto out;
3864 }
3865
3866 if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
3867 error = ENXIO;
3868 break;
3869 default:
3870 error = EINVAL;
3871 goto out;
3872 }
3873
3874 out:
3875 return (error);
3876 }
3877
3878 static void
acpi_pm_register(void * arg)3879 acpi_pm_register(void *arg)
3880 {
3881 if (!cold || resource_disabled("acpi", 0))
3882 return;
3883
3884 power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, NULL);
3885 }
3886
3887 SYSINIT(power, SI_BOOT2_KLD, SI_ORDER_ANY, acpi_pm_register, 0);
3888