1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2009-2010, Intel Corporation.
23 * All rights reserved.
24 */
25
26 #ifndef _SYS_ACPIDEV_H
27 #define _SYS_ACPIDEV_H
28 #include <sys/types.h>
29 #include <sys/obpdefs.h>
30 #include <sys/sunddi.h>
31 #ifdef _KERNEL
32 #include <sys/acpi/acpi.h>
33 #include <sys/acpica.h>
34 #endif
35
36 #ifdef __cplusplus
37 extern "C" {
38 #endif
39
40 /* Maximum recursion levels when enumerating objects in ACPI namespace. */
41 #define ACPIDEV_MAX_ENUM_LEVELS 32
42
43 /* Maximum length of device name for ACPI object. */
44 #define ACPIDEV_MAX_NAMELEN OBP_MAXDRVNAME
45
46 /* Pseudo ACPI device HID for ACPI root object. */
47 #define ACPIDEV_HID_ROOTNEX "SOLA0001"
48 /* Pseudo ACPI device HID for ACPI virtual bus. */
49 #define ACPIDEV_HID_VIRTNEX "SOLA0002"
50 #define ACPIDEV_HID_SCOPE "SOLA0003"
51 #define ACPIDEV_HID_PROCESSOR "SOLA0004"
52
53 /* ACPI device HIDs/CIDs defined by ACPI specification. */
54 #define ACPIDEV_HID_CONTAINER1 "PNP0A05"
55 #define ACPIDEV_HID_CONTAINER2 "PNP0A06"
56 #define ACPIDEV_HID_MODULE "ACPI0004"
57 #define ACPIDEV_HID_CPU "ACPI0007"
58 #define ACPIDEV_HID_PCI_HOSTBRIDGE "PNP0A03"
59 #define ACPIDEV_HID_PCIE_HOSTBRIDGE "PNP0A08"
60 #define ACPIDEV_HID_PCIEX_HOSTBRIDGE "PNP0A08"
61 #define ACPIDEV_HID_MEMORY "PNP0C80"
62
63 /* Device names for ACPI objects. */
64 #define ACPIDEV_NODE_NAME_ROOT "fw"
65 #define ACPIDEV_NODE_NAME_ACPIDR "acpidr"
66 #define ACPIDEV_NODE_NAME_CONTAINER "container"
67 #define ACPIDEV_NODE_NAME_MODULE_SBD "sb"
68 #define ACPIDEV_NODE_NAME_MODULE_CPU "socket"
69 #define ACPIDEV_NODE_NAME_CPU "cpu"
70 #define ACPIDEV_NODE_NAME_PROCESSOR "cpus"
71 #define ACPIDEV_NODE_NAME_MEMORY "mem"
72 #define ACPIDEV_NODE_NAME_PCI "pci"
73
74 /* Device types for ACPI objects. */
75 #define ACPIDEV_TYPE_ROOTNEX "acpirootnex"
76 #define ACPIDEV_TYPE_VIRTNEX "acpivirtnex"
77 #define ACPIDEV_TYPE_SCOPE "acpiscope"
78 #define ACPIDEV_TYPE_DEVICE "acpidevice"
79 #define ACPIDEV_TYPE_CONTAINER "acpicontainer"
80 #define ACPIDEV_TYPE_CPU "acpicpu"
81 #define ACPIDEV_TYPE_MEMORY "acpimemory"
82 #define ACPIDEV_TYPE_PCI "pci"
83 #define ACPIDEV_TYPE_PCIEX "pciex"
84
85 /* Device property names for ACPI objects. */
86 #define ACPIDEV_PROP_NAME_UNIT_ADDR "unit-address"
87 #define ACPIDEV_PROP_NAME_ACPI_UID "acpi-uid"
88 #define ACPIDEV_PROP_NAME_PROCESSOR_ID "acpi-processor-id"
89 #define ACPIDEV_PROP_NAME_LOCALAPIC_ID "apic-id"
90 #define ACPIDEV_PROP_NAME_PROXIMITY_ID "proximity-id"
91
92 #define ACPIDEV_PROP_NAME_UID_FORMAT "acpidev-uid-format"
93
94 /* Miscellaneous strings. */
95 #define ACPIDEV_CMD_OST_PREFIX "acpi-update-status"
96 #define ACPIDEV_CMD_OST_INPROGRESS "acpi-update-status=inprogress"
97 #define ACPIDEV_CMD_OST_SUCCESS "acpi-update-status=success"
98 #define ACPIDEV_CMD_OST_FAILURE "acpi-update-status=failure"
99 #define ACPIDEV_CMD_OST_NOOP "acpi-update-status=noop"
100
101 #define ACPIDEV_EVENT_TYPE_ATTR_NAME "acpi-event-type"
102 #define ACPIDEV_EVENT_TYPE_BUS_CHECK "bus_check"
103 #define ACPIDEV_EVENT_TYPE_DEVICE_CHECK "device_check"
104 #define ACPIDEV_EVENT_TYPE_DEVICE_CHECK_LIGHT "device_check_light"
105 #define ACPIDEV_EVENT_TYPE_EJECT_REQUEST "eject_request"
106
107 /* ACPI device class Id. */
108 typedef enum acpidev_class_id {
109 ACPIDEV_CLASS_ID_INVALID = 0,
110 ACPIDEV_CLASS_ID_ROOTNEX = 1,
111 ACPIDEV_CLASS_ID_SCOPE = 2,
112 ACPIDEV_CLASS_ID_DEVICE = 3,
113 ACPIDEV_CLASS_ID_CONTAINER = 4,
114 ACPIDEV_CLASS_ID_CPU = 5,
115 ACPIDEV_CLASS_ID_MEMORY = 6,
116 ACPIDEV_CLASS_ID_PCI = 7,
117 ACPIDEV_CLASS_ID_PCIEX = 8,
118 ACPIDEV_CLASS_ID_MAX
119 } acpidev_class_id_t;
120
121 /* Flags for acpidev_options boot options. */
122 #define ACPIDEV_OUSER_NO_CPU 0x1
123 #define ACPIDEV_OUSER_NO_MEM 0x2
124 #define ACPIDEV_OUSER_NO_CONTAINER 0x4
125 #define ACPIDEV_OUSER_NO_PCI 0x8
126 #define ACPIDEV_OUSER_NO_CACHE 0x10000
127
128 #ifdef _KERNEL
129
130 /* Common ACPI object names. */
131 #define ACPIDEV_OBJECT_NAME_SB ACPI_NS_SYSTEM_BUS
132 #define ACPIDEV_OBJECT_NAME_PR "_PR_"
133
134 /* Common ACPI method names. */
135 #define ACPIDEV_METHOD_NAME_MAT "_MAT"
136 #define ACPIDEV_METHOD_NAME_EJ0 "_EJ0"
137 #define ACPIDEV_METHOD_NAME_EDL "_EDL"
138 #define ACPIDEV_METHOD_NAME_EJD "_EJD"
139 #define ACPIDEV_METHOD_NAME_OST "_OST"
140 #define ACPIDEV_METHOD_NAME_PXM "_PXM"
141 #define ACPIDEV_METHOD_NAME_SLI "_SLI"
142
143 /* Source event code for _OST. */
144 #define ACPI_OST_EVENT_EJECTING 0x103
145 #define ACPI_OST_EVENT_INSERTING 0x200
146
147 /* Status code for _OST. */
148 #define ACPI_OST_STA_SUCCESS 0x0
149
150 /* Non-specific failure. */
151 #define ACPI_OST_STA_FAILURE 0x1
152
153 /* Unrecognized Notify Code. */
154 #define ACPI_OST_STA_NOT_SUPPORT 0x2
155
156 /* Device ejection not supported by OSPM. */
157 #define ACPI_OST_STA_EJECT_NOT_SUPPORT 0x80
158
159 /* Device in use by application. */
160 #define ACPI_OST_STA_EJECT_IN_USE 0x81
161
162 /* Device Busy. */
163 #define ACPI_OST_STA_EJECT_BUSY 0x82
164
165 /* Ejection dependency is busy or not supported for ejection by OSPM. */
166 #define ACPI_OST_STA_EJECT_DEPENDENCY 0x83
167
168 /* Ejection is in progress (pending). */
169 #define ACPI_OST_STA_EJECT_IN_PROGRESS 0x84
170
171 /* Device insertion in progress (pending). */
172 #define ACPI_OST_STA_INSERT_IN_PROGRESS 0x80
173
174 /* Device driver load failure. */
175 #define ACPI_OST_STA_INSERT_DRIVER 0x81
176
177 /* Device insertion not supported by OSPM. */
178 #define ACPI_OST_STA_INSERT_NOT_SUPPORT 0x82
179
180 /*
181 * Insertion failure
182 * Resources Unavailable as described by the following bit encodings:
183 * Bit[3] Bus Numbers
184 * Bit[2] Interrupts
185 * Bit[1] I/O
186 * Bit[0] Memory
187 */
188 #define ACPI_OST_STA_INSERT_NO_RESOURCE 0x90
189 #define ACPI_OST_STA_INSERT_NO_BUS 0x8
190 #define ACPI_OST_STA_INSERT_NO_INTR 0x4
191 #define ACPI_OST_STA_INSERT_NO_IO 0x2
192 #define ACPI_OST_STA_INSERT_NO_MEM 0x1
193
194 /*
195 * According to the ACPI specification, self latency (entry[n][n]) in the
196 * SLIT table should be 10.
197 */
198 #define ACPI_SLIT_SELF_LATENCY 10
199
200 /*
201 * The DR driver assigns a unique device id for each hot-added memory device.
202 * ACPI_MEMNODE_DEVID_BOOT is assigned to memory devices present at boot,
203 * which is distinguished from device ids assigned by the DR driver.
204 */
205 #define ACPI_MEMNODE_DEVID_BOOT UINT32_MAX
206
207 /* Forward declaration */
208 typedef struct acpidev_data_impl *acpidev_data_handle_t;
209 typedef struct acpidev_walk_info acpidev_walk_info_t;
210 typedef struct acpidev_filter_rule acpidev_filter_rule_t;
211 typedef struct acpidev_class acpidev_class_t;
212 typedef struct acpidev_class_list acpidev_class_list_t;
213
214 /* Type of ACPI device enumerating operation. */
215 typedef enum acpidev_op_type {
216 ACPIDEV_OP_BOOT_PROBE = 0, /* First pass probing at boot time. */
217 ACPIDEV_OP_BOOT_REPROBE, /* Second pass probing at boot time. */
218 ACPIDEV_OP_HOTPLUG_PROBE /* Probing for hotplug at runtime. */
219 } acpidev_op_type_t;
220
221 /*
222 * Structure to pass arguments when enumerating ACPI namespace.
223 */
224 struct acpidev_walk_info {
225 /* Always valid for all callbacks. */
226 acpidev_op_type_t awi_op_type;
227 int awi_level;
228 acpidev_walk_info_t *awi_parent;
229 acpidev_class_t *awi_class_curr;
230
231 /* Valid for all callbacks except pre_probe and post_probe. */
232 int awi_flags;
233 ACPI_HANDLE awi_hdl;
234 ACPI_DEVICE_INFO *awi_info;
235 char *awi_name;
236 acpidev_data_handle_t awi_data;
237
238 /* Need to validate it before access. */
239 dev_info_t *awi_dip;
240 acpidev_class_list_t **awi_class_list;
241
242 /* Used by class to store data temporarily. */
243 intptr_t awi_scratchpad[4];
244 };
245
246 /* Disable creating device nodes for ACPI objects. */
247 #define ACPIDEV_WI_DISABLE_CREATE 0x1
248 /* Device node has already been created for an ACPI object. */
249 #define ACPIDEV_WI_DEVICE_CREATED 0x2
250 /* Disable enumerating children of ACPI objects. */
251 #define ACPIDEV_WI_DISABLE_SCAN 0x10
252 /* Children of ACPI objects have already been enumerated. */
253 #define ACPIDEV_WI_CHILD_SCANNED 0x20
254
255 /*
256 * Device filtering result code.
257 * Device filtering logic will be applied to determine how to handle ACPI
258 * objects according to the filtering result code when enumerating ACPI objects.
259 */
260 typedef enum acpidev_filter_result {
261 ACPIDEV_FILTER_FAILED = -1, /* operation failed */
262 ACPIDEV_FILTER_CONTINUE = 0, /* continue to evaluate filter rules */
263 ACPIDEV_FILTER_DEFAULT, /* create node and scan child */
264 ACPIDEV_FILTER_SCAN, /* scan child of current node only */
265 ACPIDEV_FILTER_CREATE, /* create device node only */
266 ACPIDEV_FILTER_SKIP, /* skip current node */
267 } acpidev_filter_result_t;
268
269 typedef acpidev_filter_result_t (* acpidev_filter_func_t)(acpidev_walk_info_t *,
270 ACPI_HANDLE, acpidev_filter_rule_t *, char *, int);
271
272 /*
273 * Device filter rule data structure.
274 * User provided callback will be called if adf_filter_func is not NULL,
275 * otherwise default filtering algorithm will be applied.
276 */
277 struct acpidev_filter_rule {
278 acpidev_filter_func_t adf_filter_func;
279 intptr_t adf_filter_arg;
280 acpidev_filter_result_t adf_retcode;
281 acpidev_class_list_t **adf_class_list;
282 intptr_t adf_minlvl;
283 intptr_t adf_maxlvl;
284 char *adf_pattern;
285 char *adf_replace;
286 };
287
288 /* Callback function prototypes for ACPI device class driver. */
289 typedef ACPI_STATUS (* acpidev_pre_probe_t)(acpidev_walk_info_t *);
290 typedef ACPI_STATUS (* acpidev_post_probe_t)(acpidev_walk_info_t *);
291 typedef ACPI_STATUS (* acpidev_probe_t)(acpidev_walk_info_t *);
292 typedef acpidev_filter_result_t (* acpidev_filter_t)(acpidev_walk_info_t *,
293 char *, int);
294 typedef ACPI_STATUS (* acpidev_init_t)(acpidev_walk_info_t *);
295 typedef void (* acpidev_fini_t)(ACPI_HANDLE, acpidev_data_handle_t,
296 acpidev_class_t *);
297
298 /* Device class driver interface. */
299 struct acpidev_class {
300 volatile uint32_t adc_refcnt;
301 int adc_version;
302 acpidev_class_id_t adc_class_id;
303 /* Name of device class, used in log messages. */
304 char *adc_class_name;
305 /* Used as "device_type" property. */
306 char *adc_dev_type;
307 /* Private storage for device driver. */
308 void *adc_private;
309 /* Callback to setup environment before probing child objects. */
310 acpidev_pre_probe_t adc_pre_probe;
311 /* Callback to clean environment after probing child objects. */
312 acpidev_post_probe_t adc_post_probe;
313 /* Callback to probe child objects. */
314 acpidev_probe_t adc_probe;
315 /* Callback to figure out policy to handle objects. */
316 acpidev_filter_t adc_filter;
317 /* Callback to set device class specific device properties. */
318 acpidev_init_t adc_init;
319 /* Callback to clean up resources when destroying device nodes. */
320 acpidev_fini_t adc_fini;
321 };
322
323 /* Versions of the ACPI device class driver data structure. */
324 #define ACPIDEV_CLASS_REV1 1
325 #define ACPIDEV_CLASS_REV ACPIDEV_CLASS_REV1
326
327 /*
328 * Class drivers.
329 */
330 extern acpidev_class_t acpidev_class_scope;
331 extern acpidev_class_t acpidev_class_device;
332 extern acpidev_class_t acpidev_class_container;
333 extern acpidev_class_t acpidev_class_cpu;
334 extern acpidev_class_t acpidev_class_memory;
335 extern acpidev_class_t acpidev_class_pci;
336
337 /*
338 * Class driver lists.
339 */
340 extern acpidev_class_list_t *acpidev_class_list_root;
341 extern acpidev_class_list_t *acpidev_class_list_scope;
342 extern acpidev_class_list_t *acpidev_class_list_device;
343 extern acpidev_class_list_t *acpidev_class_list_cpu;
344 extern acpidev_class_list_t *acpidev_class_list_memory;
345
346 /*
347 * Register a device class driver onto a driver list. All class drivers on the
348 * same list will be called in order when processing an ACPI object.
349 * This interface can be used to support machine/platform specific object
350 * handling by registering special plug-in class drivers to override system
351 * default behaviors.
352 * listpp: pointer to driver list header
353 * clsp: device class driver to register
354 * tail: insert at tail of list if true
355 * Return values:
356 * AE_OK: success
357 * AE_BAD_PARAMETER: invalid parameter
358 * AE_BAD_DATA: driver version mismatch
359 * AE_ALREADY_EXISTS: class driver already exists on the list
360 */
361 extern ACPI_STATUS acpidev_register_class(acpidev_class_list_t **listpp,
362 acpidev_class_t *clsp, boolean_t tail);
363
364 /*
365 * Unregister a device class driver from a driver list.
366 * listpp: pointer to driver list header
367 * clsp: device class driver to unregister
368 * Return values:
369 * AE_OK: success
370 * AE_BAD_PARAMETER: invalid parameter
371 * AE_NOT_FOUND: class driver doesn't exist in list
372 * AE_ERROR: class driver is still in use.
373 */
374 extern ACPI_STATUS acpidev_unregister_class(acpidev_class_list_t **listpp,
375 acpidev_class_t *clsp);
376
377 /*
378 * Recursively enumerate child objects of an ACPI object.
379 * It does following things in turn:
380 * 1) Call pre_probe callback for each registered handler
381 * 2) Enumerate child objects and call probe callbacks for each object
382 * 3) Call post_probe callback for each registered handler
383 * Return AE_OK on success and error code on failure.
384 */
385 extern ACPI_STATUS acpidev_probe_child(acpidev_walk_info_t *infop);
386
387 /*
388 * Default handler to process ACPI objects.
389 * It creates a device node for an ACPI object and scans all child objects on
390 * demand.
391 * Return values:
392 * AE_OK: on success
393 * AE_NOT_EXIST: device doesn't exist according to _STA value.
394 * AE_ALREADY_EXISTS: object already handled by other handler.
395 * AE_ERROR: on other failure
396 */
397 extern ACPI_STATUS acpidev_process_object(acpidev_walk_info_t *infop,
398 int flags);
399
400 /* Flags for acpidev_process_device() */
401 #define ACPIDEV_PROCESS_FLAG_CREATE 0x1 /* Create device */
402 #define ACPIDEV_PROCESS_FLAG_SCAN 0x2 /* Scan child objects */
403 #define ACPIDEV_PROCESS_FLAG_CHECK 0x100 /* Check status */
404 #define ACPIDEV_PROCESS_FLAG_NOBIND 0x200 /* Skip binding driver */
405 #define ACPIDEV_PROCESS_FLAG_OFFLINE 0x400 /* Put device into offline. */
406 #define ACPIDEV_PROCESS_FLAG_NOTAG 0x800 /* Skip tag dip with object. */
407 #define ACPIDEV_PROCESS_FLAG_SYNCSTATUS 0x1000 /* Sync object status. */
408 #define ACPIDEV_PROCESS_FLAG_HOLDBRANCH 0x10000 /* Hold device branch. */
409
410 /*
411 * Filter ACPI objects according to filter rules, generate devname if needed.
412 * infop: pointer to walker information structure
413 * hdl: handle of ACPI object in question
414 * afrp: pointer to filter rule array
415 * entries: number of filter rules in array
416 * devname: buffer to store generated device name
417 * len: sizeof devname buffer
418 */
419 extern acpidev_filter_result_t acpidev_filter_device(acpidev_walk_info_t *infop,
420 ACPI_HANDLE hdl, acpidev_filter_rule_t *afrp, int entries,
421 char *devname, int len);
422
423 /* Default object filtering algorithm. */
424 extern acpidev_filter_result_t acpidev_filter_default(
425 acpidev_walk_info_t *infop, ACPI_HANDLE hdl, acpidev_filter_rule_t *afrp,
426 char *devname, int len);
427
428 /* Utility routines */
429 extern dev_info_t *acpidev_root_node(void);
430 extern char *acpidev_get_object_name(ACPI_HANDLE hdl);
431 extern void acpidev_free_object_name(char *objname);
432
433 extern acpidev_walk_info_t *acpidev_alloc_walk_info(acpidev_op_type_t op_type,
434 int lvl, ACPI_HANDLE hdl, acpidev_class_list_t **listpp,
435 acpidev_walk_info_t *pinfop);
436 extern void acpidev_free_walk_info(acpidev_walk_info_t *infop);
437 extern dev_info_t *acpidev_walk_info_get_pdip(acpidev_walk_info_t *infop);
438
439 /* Interfaces to access data associated with ACPI object. */
440 extern acpidev_data_handle_t acpidev_data_get_handle(ACPI_HANDLE hdl);
441 extern acpidev_data_handle_t acpidev_data_create_handle(ACPI_HANDLE hdl);
442 extern void acpidev_data_destroy_handle(ACPI_HANDLE hdl);
443 extern ACPI_HANDLE acpidev_data_get_object(acpidev_data_handle_t hdl);
444 extern dev_info_t *acpidev_data_get_devinfo(acpidev_data_handle_t hdl);
445 extern int acpidev_data_get_status(acpidev_data_handle_t hdl);
446 extern boolean_t acpidev_data_dr_capable(acpidev_data_handle_t hdl);
447 extern boolean_t acpidev_data_dr_ready(acpidev_data_handle_t hdl);
448 extern boolean_t acpidev_data_dr_failed(acpidev_data_handle_t hdl);
449 extern void acpidev_data_set_flag(acpidev_data_handle_t hdl, uint32_t flag);
450 extern void acpidev_data_clear_flag(acpidev_data_handle_t hdl, uint32_t flag);
451 extern uint32_t acpidev_data_get_flag(acpidev_data_handle_t hdl, uint32_t flag);
452
453 /* ACPI system event handler has been registered. */
454 #define ACPIDEV_DATA_HANDLER_READY 0x1
455
456 /*
457 * Try to generate meaningful device unit address from uid.
458 * Return buf on success and NULL on failure.
459 */
460 extern char *acpidev_generate_unitaddr(char *uid, char **fmts, size_t nfmt,
461 char *buf, size_t len);
462
463 /*
464 * Set device unit address property if _UID is available or unitaddr is valid.
465 * Return AE_OK on success and error code on failure.
466 * N.B.: it returns AE_OK if _UID is unavailable and unitaddr is NULL.
467 */
468 extern ACPI_STATUS acpidev_set_unitaddr(acpidev_walk_info_t *infop,
469 char **fmts, size_t nfmt, char *unitaddr);
470
471 /*
472 * Generate the device 'compatible' property list for a device based on:
473 * * Device HID if available
474 * * Device CIDs if available
475 * * property array passed in
476 * infop: pointer to walk information structure
477 * compat: pointer to property array
478 * acount: entries in property array
479 * Return AE_OK on success and error code on failure.
480 */
481 extern ACPI_STATUS acpidev_set_compatible(acpidev_walk_info_t *infop,
482 char **compat, int acount);
483
484 /*
485 * Query ACPI device status.
486 * N.B.: it returns with all status bits set if _STA is not available.
487 */
488 extern int acpidev_query_device_status(ACPI_HANDLE hdl);
489
490 /*
491 * Check whether device exists.
492 * Return false if device doesn't exist.
493 */
494 extern boolean_t acpidev_check_device_present(int status);
495
496 /*
497 * Check whether device is enabled.
498 * Return false if device doesn't exist or hasn't been enabled.
499 */
500 extern boolean_t acpidev_check_device_enabled(int status);
501
502 /*
503 * Match device ids with ACPI object's _HID and _CIDs.
504 * infop: ACPI object information structure
505 * ids: array of ACPI HIDs and CIDs
506 * count: entries in array
507 * Return TRUE if one item matches or num is zero, else FALSE.
508 */
509 extern boolean_t acpidev_match_device_id(ACPI_DEVICE_INFO *infop,
510 char **ids, int count);
511
512 /*
513 * Implement almost the same function as AcpiGetDevices() with the following
514 * changes/enhancements:
515 * 1) Support limiting recursive levels.
516 * 2) Support matching multiple ids instead of one.
517 * 3) Report device without ACPI_STA_DEVICE_PRESENT flag which will be ignored
518 * by AcpiGetDevices().
519 */
520 extern ACPI_STATUS acpidev_get_device_by_id(ACPI_HANDLE hdl,
521 char **ids, int count, int maxdepth, boolean_t skip_non_exist,
522 ACPI_WALK_CALLBACK userfunc, void *userarg, void** retval);
523
524 /* Callback for APIC entry walker. */
525 typedef ACPI_STATUS (* acpidev_apic_walker_t)(ACPI_SUBTABLE_HEADER *, void *);
526
527 /*
528 * Walk ACPI APIC entries from the first source available in following order:
529 * 1) ACPI buffer passed in if bufp isn't NULL.
530 * 2) Buffer returned by evaluating method if it isn't NULL.
531 * 3) MADT table as last resort.
532 */
533 extern ACPI_STATUS acpidev_walk_apic(ACPI_BUFFER *bufp, ACPI_HANDLE hdl,
534 char *method, acpidev_apic_walker_t func, void *context);
535
536 /*
537 * Evaluate _OST method under object, which is used to support hotplug event.
538 * hdl: object handle
539 * code: _OST source event code
540 * stauts: _OST result status code
541 * bufp and len: optional third parameter for _OST.
542 */
543 extern ACPI_STATUS acpidev_eval_ost(ACPI_HANDLE hdl, uint32_t code,
544 uint32_t status, char *bufp, size_t len);
545
546 /*
547 * Evaluate _EJ0 method under object.
548 */
549 extern ACPI_STATUS acpidev_eval_ej0(ACPI_HANDLE hdl);
550
551 /*
552 * Evaluate _PXM method under object.
553 */
554 extern ACPI_STATUS acpidev_eval_pxm(ACPI_HANDLE hdl, uint32_t *idp);
555
556 #endif /* _KERNEL */
557
558 #ifdef __cplusplus
559 }
560 #endif
561
562 #endif /* _SYS_ACPIDEV_H */