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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
ffdcd955 MW |
2 | /* |
3 | * ACPI device specific properties support. | |
4 | * | |
5 | * Copyright (C) 2014, Intel Corporation | |
6 | * All rights reserved. | |
7 | * | |
8 | * Authors: Mika Westerberg <mika.westerberg@linux.intel.com> | |
9 | * Darren Hart <dvhart@linux.intel.com> | |
10 | * Rafael J. Wysocki <rafael.j.wysocki@intel.com> | |
ffdcd955 MW |
11 | */ |
12 | ||
13 | #include <linux/acpi.h> | |
14 | #include <linux/device.h> | |
15 | #include <linux/export.h> | |
16 | ||
17 | #include "internal.h" | |
18 | ||
99a85464 | 19 | static int acpi_data_get_property_array(const struct acpi_device_data *data, |
3a7a2ab8 RW |
20 | const char *name, |
21 | acpi_object_type type, | |
22 | const union acpi_object **obj); | |
23 | ||
617654aa MW |
24 | /* |
25 | * The GUIDs here are made equivalent to each other in order to avoid extra | |
26 | * complexity in the properties handling code, with the caveat that the | |
27 | * kernel will accept certain combinations of GUID and properties that are | |
28 | * not defined without a warning. For instance if any of the properties | |
29 | * from different GUID appear in a property list of another, it will be | |
30 | * accepted by the kernel. Firmware validation tools should catch these. | |
31 | */ | |
5f5e4890 MW |
32 | static const guid_t prp_guids[] = { |
33 | /* ACPI _DSD device properties GUID: daffd814-6eba-4d8c-8a91-bc9bbf4aa301 */ | |
3689d3d6 | 34 | GUID_INIT(0xdaffd814, 0x6eba, 0x4d8c, |
5f5e4890 | 35 | 0x8a, 0x91, 0xbc, 0x9b, 0xbf, 0x4a, 0xa3, 0x01), |
26ad34d5 MW |
36 | /* Hotplug in D3 GUID: 6211e2c0-58a3-4af3-90e1-927a4e0c55a4 */ |
37 | GUID_INIT(0x6211e2c0, 0x58a3, 0x4af3, | |
38 | 0x90, 0xe1, 0x92, 0x7a, 0x4e, 0x0c, 0x55, 0xa4), | |
617654aa MW |
39 | /* External facing port GUID: efcc06cc-73ac-4bc3-bff0-76143807c389 */ |
40 | GUID_INIT(0xefcc06cc, 0x73ac, 0x4bc3, | |
41 | 0xbf, 0xf0, 0x76, 0x14, 0x38, 0x07, 0xc3, 0x89), | |
dfda2041 MW |
42 | /* Thunderbolt GUID for IMR_VALID: c44d002f-69f9-4e7d-a904-a7baabdf43f7 */ |
43 | GUID_INIT(0xc44d002f, 0x69f9, 0x4e7d, | |
44 | 0xa9, 0x04, 0xa7, 0xba, 0xab, 0xdf, 0x43, 0xf7), | |
45 | /* Thunderbolt GUID for WAKE_SUPPORTED: 6c501103-c189-4296-ba72-9bf5a26ebe5d */ | |
46 | GUID_INIT(0x6c501103, 0xc189, 0x4296, | |
47 | 0xba, 0x72, 0x9b, 0xf5, 0xa2, 0x6e, 0xbe, 0x5d), | |
df4f9bc4 DB |
48 | /* Storage device needs D3 GUID: 5025030f-842f-4ab4-a561-99a5189762d0 */ |
49 | GUID_INIT(0x5025030f, 0x842f, 0x4ab4, | |
50 | 0xa5, 0x61, 0x99, 0xa5, 0x18, 0x97, 0x62, 0xd0), | |
5f5e4890 MW |
51 | }; |
52 | ||
5f21f305 | 53 | /* ACPI _DSD data subnodes GUID: dbb8e3e6-5886-4ba6-8795-1319f52a966b */ |
3689d3d6 AS |
54 | static const guid_t ads_guid = |
55 | GUID_INIT(0xdbb8e3e6, 0x5886, 0x4ba6, | |
56 | 0x87, 0x95, 0x13, 0x19, 0xf5, 0x2a, 0x96, 0x6b); | |
445b0eb0 | 57 | |
103e10c6 SA |
58 | static const guid_t buffer_prop_guid = |
59 | GUID_INIT(0xedb12dd0, 0x363d, 0x4085, | |
60 | 0xa3, 0xd2, 0x49, 0x52, 0x2c, 0xa1, 0x60, 0xc4); | |
61 | ||
445b0eb0 | 62 | static bool acpi_enumerate_nondev_subnodes(acpi_handle scope, |
103e10c6 | 63 | union acpi_object *desc, |
dfa672fb MW |
64 | struct acpi_device_data *data, |
65 | struct fwnode_handle *parent); | |
103e10c6 SA |
66 | static bool acpi_extract_properties(acpi_handle handle, |
67 | union acpi_object *desc, | |
445b0eb0 RW |
68 | struct acpi_device_data *data); |
69 | ||
103e10c6 | 70 | static bool acpi_nondev_subnode_extract(union acpi_object *desc, |
99db5ff7 RW |
71 | acpi_handle handle, |
72 | const union acpi_object *link, | |
dfa672fb MW |
73 | struct list_head *list, |
74 | struct fwnode_handle *parent) | |
445b0eb0 | 75 | { |
445b0eb0 | 76 | struct acpi_data_node *dn; |
99db5ff7 | 77 | bool result; |
445b0eb0 RW |
78 | |
79 | dn = kzalloc(sizeof(*dn), GFP_KERNEL); | |
80 | if (!dn) | |
81 | return false; | |
82 | ||
83 | dn->name = link->package.elements[0].string.pointer; | |
01bb86b3 | 84 | fwnode_init(&dn->fwnode, &acpi_data_fwnode_ops); |
dfa672fb | 85 | dn->parent = parent; |
5f5e4890 | 86 | INIT_LIST_HEAD(&dn->data.properties); |
445b0eb0 RW |
87 | INIT_LIST_HEAD(&dn->data.subnodes); |
88 | ||
103e10c6 | 89 | result = acpi_extract_properties(handle, desc, &dn->data); |
445b0eb0 | 90 | |
99db5ff7 RW |
91 | if (handle) { |
92 | acpi_handle scope; | |
93 | acpi_status status; | |
445b0eb0 | 94 | |
99db5ff7 RW |
95 | /* |
96 | * The scope for the subnode object lookup is the one of the | |
97 | * namespace node (device) containing the object that has | |
98 | * returned the package. That is, it's the scope of that | |
99 | * object's parent. | |
100 | */ | |
101 | status = acpi_get_parent(handle, &scope); | |
102 | if (ACPI_SUCCESS(status) | |
dfa672fb MW |
103 | && acpi_enumerate_nondev_subnodes(scope, desc, &dn->data, |
104 | &dn->fwnode)) | |
99db5ff7 | 105 | result = true; |
dfa672fb MW |
106 | } else if (acpi_enumerate_nondev_subnodes(NULL, desc, &dn->data, |
107 | &dn->fwnode)) { | |
99db5ff7 RW |
108 | result = true; |
109 | } | |
445b0eb0 | 110 | |
99db5ff7 | 111 | if (result) { |
263b4c1a | 112 | dn->handle = handle; |
99db5ff7 | 113 | dn->data.pointer = desc; |
445b0eb0 RW |
114 | list_add_tail(&dn->sibling, list); |
115 | return true; | |
116 | } | |
117 | ||
99db5ff7 | 118 | kfree(dn); |
445b0eb0 | 119 | acpi_handle_debug(handle, "Invalid properties/subnodes data, skipping\n"); |
99db5ff7 RW |
120 | return false; |
121 | } | |
122 | ||
123 | static bool acpi_nondev_subnode_data_ok(acpi_handle handle, | |
124 | const union acpi_object *link, | |
dfa672fb MW |
125 | struct list_head *list, |
126 | struct fwnode_handle *parent) | |
99db5ff7 RW |
127 | { |
128 | struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER }; | |
129 | acpi_status status; | |
130 | ||
131 | status = acpi_evaluate_object_typed(handle, NULL, NULL, &buf, | |
132 | ACPI_TYPE_PACKAGE); | |
133 | if (ACPI_FAILURE(status)) | |
134 | return false; | |
135 | ||
dfa672fb MW |
136 | if (acpi_nondev_subnode_extract(buf.pointer, handle, link, list, |
137 | parent)) | |
99db5ff7 | 138 | return true; |
445b0eb0 | 139 | |
445b0eb0 | 140 | ACPI_FREE(buf.pointer); |
445b0eb0 RW |
141 | return false; |
142 | } | |
143 | ||
99db5ff7 RW |
144 | static bool acpi_nondev_subnode_ok(acpi_handle scope, |
145 | const union acpi_object *link, | |
dfa672fb MW |
146 | struct list_head *list, |
147 | struct fwnode_handle *parent) | |
99db5ff7 RW |
148 | { |
149 | acpi_handle handle; | |
150 | acpi_status status; | |
151 | ||
152 | if (!scope) | |
153 | return false; | |
154 | ||
155 | status = acpi_get_handle(scope, link->package.elements[1].string.pointer, | |
156 | &handle); | |
157 | if (ACPI_FAILURE(status)) | |
158 | return false; | |
159 | ||
dfa672fb | 160 | return acpi_nondev_subnode_data_ok(handle, link, list, parent); |
99db5ff7 RW |
161 | } |
162 | ||
85140ef2 | 163 | static bool acpi_add_nondev_subnodes(acpi_handle scope, |
103e10c6 | 164 | union acpi_object *links, |
85140ef2 SA |
165 | struct list_head *list, |
166 | struct fwnode_handle *parent) | |
445b0eb0 RW |
167 | { |
168 | bool ret = false; | |
169 | int i; | |
170 | ||
171 | for (i = 0; i < links->package.count; i++) { | |
103e10c6 | 172 | union acpi_object *link, *desc; |
99db5ff7 RW |
173 | acpi_handle handle; |
174 | bool result; | |
445b0eb0 RW |
175 | |
176 | link = &links->package.elements[i]; | |
99db5ff7 RW |
177 | /* Only two elements allowed. */ |
178 | if (link->package.count != 2) | |
179 | continue; | |
180 | ||
181 | /* The first one must be a string. */ | |
182 | if (link->package.elements[0].type != ACPI_TYPE_STRING) | |
183 | continue; | |
184 | ||
185 | /* The second one may be a string, a reference or a package. */ | |
186 | switch (link->package.elements[1].type) { | |
187 | case ACPI_TYPE_STRING: | |
dfa672fb MW |
188 | result = acpi_nondev_subnode_ok(scope, link, list, |
189 | parent); | |
99db5ff7 RW |
190 | break; |
191 | case ACPI_TYPE_LOCAL_REFERENCE: | |
192 | handle = link->package.elements[1].reference.handle; | |
dfa672fb MW |
193 | result = acpi_nondev_subnode_data_ok(handle, link, list, |
194 | parent); | |
99db5ff7 RW |
195 | break; |
196 | case ACPI_TYPE_PACKAGE: | |
197 | desc = &link->package.elements[1]; | |
dfa672fb MW |
198 | result = acpi_nondev_subnode_extract(desc, NULL, link, |
199 | list, parent); | |
99db5ff7 RW |
200 | break; |
201 | default: | |
202 | result = false; | |
203 | break; | |
204 | } | |
205 | ret = ret || result; | |
445b0eb0 RW |
206 | } |
207 | ||
208 | return ret; | |
209 | } | |
210 | ||
211 | static bool acpi_enumerate_nondev_subnodes(acpi_handle scope, | |
103e10c6 | 212 | union acpi_object *desc, |
dfa672fb MW |
213 | struct acpi_device_data *data, |
214 | struct fwnode_handle *parent) | |
445b0eb0 RW |
215 | { |
216 | int i; | |
217 | ||
3689d3d6 | 218 | /* Look for the ACPI data subnodes GUID. */ |
445b0eb0 | 219 | for (i = 0; i < desc->package.count; i += 2) { |
103e10c6 SA |
220 | const union acpi_object *guid; |
221 | union acpi_object *links; | |
445b0eb0 | 222 | |
3689d3d6 | 223 | guid = &desc->package.elements[i]; |
445b0eb0 RW |
224 | links = &desc->package.elements[i + 1]; |
225 | ||
226 | /* | |
3689d3d6 | 227 | * The first element must be a GUID and the second one must be |
445b0eb0 RW |
228 | * a package. |
229 | */ | |
3689d3d6 AS |
230 | if (guid->type != ACPI_TYPE_BUFFER || |
231 | guid->buffer.length != 16 || | |
232 | links->type != ACPI_TYPE_PACKAGE) | |
445b0eb0 RW |
233 | break; |
234 | ||
3689d3d6 | 235 | if (!guid_equal((guid_t *)guid->buffer.pointer, &ads_guid)) |
445b0eb0 RW |
236 | continue; |
237 | ||
dfa672fb MW |
238 | return acpi_add_nondev_subnodes(scope, links, &data->subnodes, |
239 | parent); | |
445b0eb0 RW |
240 | } |
241 | ||
242 | return false; | |
243 | } | |
ffdcd955 MW |
244 | |
245 | static bool acpi_property_value_ok(const union acpi_object *value) | |
246 | { | |
247 | int j; | |
248 | ||
249 | /* | |
250 | * The value must be an integer, a string, a reference, or a package | |
251 | * whose every element must be an integer, a string, or a reference. | |
252 | */ | |
253 | switch (value->type) { | |
254 | case ACPI_TYPE_INTEGER: | |
255 | case ACPI_TYPE_STRING: | |
256 | case ACPI_TYPE_LOCAL_REFERENCE: | |
257 | return true; | |
258 | ||
259 | case ACPI_TYPE_PACKAGE: | |
260 | for (j = 0; j < value->package.count; j++) | |
261 | switch (value->package.elements[j].type) { | |
262 | case ACPI_TYPE_INTEGER: | |
263 | case ACPI_TYPE_STRING: | |
264 | case ACPI_TYPE_LOCAL_REFERENCE: | |
265 | continue; | |
266 | ||
267 | default: | |
268 | return false; | |
269 | } | |
270 | ||
271 | return true; | |
272 | } | |
273 | return false; | |
274 | } | |
275 | ||
276 | static bool acpi_properties_format_valid(const union acpi_object *properties) | |
277 | { | |
278 | int i; | |
279 | ||
280 | for (i = 0; i < properties->package.count; i++) { | |
281 | const union acpi_object *property; | |
282 | ||
283 | property = &properties->package.elements[i]; | |
284 | /* | |
285 | * Only two elements allowed, the first one must be a string and | |
286 | * the second one has to satisfy certain conditions. | |
287 | */ | |
288 | if (property->package.count != 2 | |
289 | || property->package.elements[0].type != ACPI_TYPE_STRING | |
290 | || !acpi_property_value_ok(&property->package.elements[1])) | |
291 | return false; | |
292 | } | |
293 | return true; | |
294 | } | |
295 | ||
733e6251 MW |
296 | static void acpi_init_of_compatible(struct acpi_device *adev) |
297 | { | |
298 | const union acpi_object *of_compatible; | |
733e6251 MW |
299 | int ret; |
300 | ||
3a7a2ab8 RW |
301 | ret = acpi_data_get_property_array(&adev->data, "compatible", |
302 | ACPI_TYPE_STRING, &of_compatible); | |
733e6251 MW |
303 | if (ret) { |
304 | ret = acpi_dev_get_property(adev, "compatible", | |
305 | ACPI_TYPE_STRING, &of_compatible); | |
306 | if (ret) { | |
62fcb99b RW |
307 | struct acpi_device *parent; |
308 | ||
309 | parent = acpi_dev_parent(adev); | |
310 | if (parent && parent->flags.of_compatible_ok) | |
5c53b262 RW |
311 | goto out; |
312 | ||
733e6251 MW |
313 | return; |
314 | } | |
315 | } | |
316 | adev->data.of_compatible = of_compatible; | |
5c53b262 RW |
317 | |
318 | out: | |
319 | adev->flags.of_compatible_ok = 1; | |
733e6251 MW |
320 | } |
321 | ||
5f5e4890 MW |
322 | static bool acpi_is_property_guid(const guid_t *guid) |
323 | { | |
324 | int i; | |
325 | ||
326 | for (i = 0; i < ARRAY_SIZE(prp_guids); i++) { | |
327 | if (guid_equal(guid, &prp_guids[i])) | |
328 | return true; | |
329 | } | |
330 | ||
331 | return false; | |
332 | } | |
333 | ||
334 | struct acpi_device_properties * | |
335 | acpi_data_add_props(struct acpi_device_data *data, const guid_t *guid, | |
103e10c6 | 336 | union acpi_object *properties) |
5f5e4890 MW |
337 | { |
338 | struct acpi_device_properties *props; | |
339 | ||
340 | props = kzalloc(sizeof(*props), GFP_KERNEL); | |
341 | if (props) { | |
342 | INIT_LIST_HEAD(&props->list); | |
343 | props->guid = guid; | |
344 | props->properties = properties; | |
345 | list_add_tail(&props->list, &data->properties); | |
346 | } | |
347 | ||
348 | return props; | |
349 | } | |
350 | ||
1d52f109 SA |
351 | static void acpi_nondev_subnode_tag(acpi_handle handle, void *context) |
352 | { | |
353 | } | |
354 | ||
355 | static void acpi_untie_nondev_subnodes(struct acpi_device_data *data) | |
356 | { | |
357 | struct acpi_data_node *dn; | |
358 | ||
359 | list_for_each_entry(dn, &data->subnodes, sibling) { | |
360 | acpi_detach_data(dn->handle, acpi_nondev_subnode_tag); | |
361 | ||
362 | acpi_untie_nondev_subnodes(&dn->data); | |
363 | } | |
364 | } | |
365 | ||
366 | static bool acpi_tie_nondev_subnodes(struct acpi_device_data *data) | |
367 | { | |
368 | struct acpi_data_node *dn; | |
369 | ||
370 | list_for_each_entry(dn, &data->subnodes, sibling) { | |
371 | acpi_status status; | |
372 | bool ret; | |
373 | ||
374 | status = acpi_attach_data(dn->handle, acpi_nondev_subnode_tag, dn); | |
2ea3b197 | 375 | if (ACPI_FAILURE(status) && status != AE_ALREADY_EXISTS) { |
1d52f109 SA |
376 | acpi_handle_err(dn->handle, "Can't tag data node\n"); |
377 | return false; | |
378 | } | |
379 | ||
380 | ret = acpi_tie_nondev_subnodes(&dn->data); | |
381 | if (!ret) | |
382 | return ret; | |
383 | } | |
384 | ||
385 | return true; | |
386 | } | |
387 | ||
103e10c6 SA |
388 | static void acpi_data_add_buffer_props(acpi_handle handle, |
389 | struct acpi_device_data *data, | |
390 | union acpi_object *properties) | |
391 | { | |
392 | struct acpi_device_properties *props; | |
393 | union acpi_object *package; | |
394 | size_t alloc_size; | |
395 | unsigned int i; | |
396 | u32 *count; | |
397 | ||
398 | if (check_mul_overflow((size_t)properties->package.count, | |
399 | sizeof(*package) + sizeof(void *), | |
400 | &alloc_size) || | |
401 | check_add_overflow(sizeof(*props) + sizeof(*package), alloc_size, | |
402 | &alloc_size)) { | |
403 | acpi_handle_warn(handle, | |
404 | "can't allocate memory for %u buffer props", | |
405 | properties->package.count); | |
406 | return; | |
407 | } | |
408 | ||
409 | props = kvzalloc(alloc_size, GFP_KERNEL); | |
410 | if (!props) | |
411 | return; | |
412 | ||
413 | props->guid = &buffer_prop_guid; | |
414 | props->bufs = (void *)(props + 1); | |
415 | props->properties = (void *)(props->bufs + properties->package.count); | |
416 | ||
417 | /* Outer package */ | |
418 | package = props->properties; | |
419 | package->type = ACPI_TYPE_PACKAGE; | |
420 | package->package.elements = package + 1; | |
421 | count = &package->package.count; | |
422 | *count = 0; | |
423 | ||
424 | /* Inner packages */ | |
425 | package++; | |
426 | ||
427 | for (i = 0; i < properties->package.count; i++) { | |
428 | struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER }; | |
429 | union acpi_object *property = &properties->package.elements[i]; | |
430 | union acpi_object *prop, *obj, *buf_obj; | |
431 | acpi_status status; | |
432 | ||
433 | if (property->type != ACPI_TYPE_PACKAGE || | |
434 | property->package.count != 2) { | |
435 | acpi_handle_warn(handle, | |
436 | "buffer property %u has %u entries\n", | |
437 | i, property->package.count); | |
438 | continue; | |
439 | } | |
440 | ||
441 | prop = &property->package.elements[0]; | |
442 | obj = &property->package.elements[1]; | |
443 | ||
444 | if (prop->type != ACPI_TYPE_STRING || | |
445 | obj->type != ACPI_TYPE_STRING) { | |
446 | acpi_handle_warn(handle, | |
447 | "wrong object types %u and %u\n", | |
448 | prop->type, obj->type); | |
449 | continue; | |
450 | } | |
451 | ||
452 | status = acpi_evaluate_object_typed(handle, obj->string.pointer, | |
453 | NULL, &buf, | |
454 | ACPI_TYPE_BUFFER); | |
455 | if (ACPI_FAILURE(status)) { | |
456 | acpi_handle_warn(handle, | |
457 | "can't evaluate \"%*pE\" as buffer\n", | |
458 | obj->string.length, | |
459 | obj->string.pointer); | |
460 | continue; | |
461 | } | |
462 | ||
463 | package->type = ACPI_TYPE_PACKAGE; | |
464 | package->package.elements = prop; | |
465 | package->package.count = 2; | |
466 | ||
467 | buf_obj = buf.pointer; | |
468 | ||
469 | /* Replace the string object with a buffer object */ | |
470 | obj->type = ACPI_TYPE_BUFFER; | |
471 | obj->buffer.length = buf_obj->buffer.length; | |
472 | obj->buffer.pointer = buf_obj->buffer.pointer; | |
473 | ||
474 | props->bufs[i] = buf.pointer; | |
475 | package++; | |
476 | (*count)++; | |
477 | } | |
478 | ||
479 | if (*count) | |
480 | list_add(&props->list, &data->properties); | |
481 | else | |
482 | kvfree(props); | |
483 | } | |
484 | ||
485 | static bool acpi_extract_properties(acpi_handle scope, union acpi_object *desc, | |
bd8191cc | 486 | struct acpi_device_data *data) |
ffdcd955 | 487 | { |
ffdcd955 MW |
488 | int i; |
489 | ||
ffdcd955 | 490 | if (desc->package.count % 2) |
bd8191cc | 491 | return false; |
ffdcd955 | 492 | |
3689d3d6 | 493 | /* Look for the device properties GUID. */ |
ffdcd955 | 494 | for (i = 0; i < desc->package.count; i += 2) { |
103e10c6 SA |
495 | const union acpi_object *guid; |
496 | union acpi_object *properties; | |
ffdcd955 | 497 | |
3689d3d6 | 498 | guid = &desc->package.elements[i]; |
ffdcd955 MW |
499 | properties = &desc->package.elements[i + 1]; |
500 | ||
501 | /* | |
3689d3d6 | 502 | * The first element must be a GUID and the second one must be |
ffdcd955 MW |
503 | * a package. |
504 | */ | |
3689d3d6 AS |
505 | if (guid->type != ACPI_TYPE_BUFFER || |
506 | guid->buffer.length != 16 || | |
507 | properties->type != ACPI_TYPE_PACKAGE) | |
ffdcd955 MW |
508 | break; |
509 | ||
103e10c6 SA |
510 | if (guid_equal((guid_t *)guid->buffer.pointer, |
511 | &buffer_prop_guid)) { | |
512 | acpi_data_add_buffer_props(scope, data, properties); | |
513 | continue; | |
514 | } | |
515 | ||
5f5e4890 | 516 | if (!acpi_is_property_guid((guid_t *)guid->buffer.pointer)) |
ffdcd955 MW |
517 | continue; |
518 | ||
519 | /* | |
3689d3d6 | 520 | * We found the matching GUID. Now validate the format of the |
ffdcd955 MW |
521 | * package immediately following it. |
522 | */ | |
523 | if (!acpi_properties_format_valid(properties)) | |
5f5e4890 | 524 | continue; |
ffdcd955 | 525 | |
5f5e4890 MW |
526 | acpi_data_add_props(data, (const guid_t *)guid->buffer.pointer, |
527 | properties); | |
bd8191cc | 528 | } |
733e6251 | 529 | |
5f5e4890 | 530 | return !list_empty(&data->properties); |
bd8191cc | 531 | } |
5c53b262 | 532 | |
bd8191cc RW |
533 | void acpi_init_properties(struct acpi_device *adev) |
534 | { | |
535 | struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER }; | |
536 | struct acpi_hardware_id *hwid; | |
537 | acpi_status status; | |
538 | bool acpi_of = false; | |
539 | ||
5f5e4890 | 540 | INIT_LIST_HEAD(&adev->data.properties); |
445b0eb0 RW |
541 | INIT_LIST_HEAD(&adev->data.subnodes); |
542 | ||
75fc70e0 LW |
543 | if (!adev->handle) |
544 | return; | |
545 | ||
bd8191cc RW |
546 | /* |
547 | * Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in | |
548 | * Device Tree compatible properties for this device. | |
549 | */ | |
550 | list_for_each_entry(hwid, &adev->pnp.ids, list) { | |
551 | if (!strcmp(hwid->id, ACPI_DT_NAMESPACE_HID)) { | |
552 | acpi_of = true; | |
553 | break; | |
554 | } | |
ffdcd955 MW |
555 | } |
556 | ||
bd8191cc RW |
557 | status = acpi_evaluate_object_typed(adev->handle, "_DSD", NULL, &buf, |
558 | ACPI_TYPE_PACKAGE); | |
559 | if (ACPI_FAILURE(status)) | |
560 | goto out; | |
561 | ||
103e10c6 | 562 | if (acpi_extract_properties(adev->handle, buf.pointer, &adev->data)) { |
bd8191cc RW |
563 | adev->data.pointer = buf.pointer; |
564 | if (acpi_of) | |
565 | acpi_init_of_compatible(adev); | |
445b0eb0 | 566 | } |
dfa672fb MW |
567 | if (acpi_enumerate_nondev_subnodes(adev->handle, buf.pointer, |
568 | &adev->data, acpi_fwnode_handle(adev))) | |
445b0eb0 RW |
569 | adev->data.pointer = buf.pointer; |
570 | ||
571 | if (!adev->data.pointer) { | |
bd8191cc RW |
572 | acpi_handle_debug(adev->handle, "Invalid _DSD data, skipping\n"); |
573 | ACPI_FREE(buf.pointer); | |
46981fa7 SA |
574 | } else { |
575 | if (!acpi_tie_nondev_subnodes(&adev->data)) | |
576 | acpi_untie_nondev_subnodes(&adev->data); | |
bd8191cc | 577 | } |
5c53b262 RW |
578 | |
579 | out: | |
580 | if (acpi_of && !adev->flags.of_compatible_ok) | |
581 | acpi_handle_info(adev->handle, | |
ee892094 | 582 | ACPI_DT_NAMESPACE_HID " requires 'compatible' property\n"); |
899596e0 LW |
583 | |
584 | if (!adev->data.pointer) | |
585 | acpi_extract_apple_properties(adev); | |
ffdcd955 MW |
586 | } |
587 | ||
3bd561e1 SA |
588 | static void acpi_free_device_properties(struct list_head *list) |
589 | { | |
590 | struct acpi_device_properties *props, *tmp; | |
591 | ||
592 | list_for_each_entry_safe(props, tmp, list, list) { | |
103e10c6 SA |
593 | u32 i; |
594 | ||
3bd561e1 | 595 | list_del(&props->list); |
103e10c6 SA |
596 | /* Buffer data properties were separately allocated */ |
597 | if (props->bufs) | |
598 | for (i = 0; i < props->properties->package.count; i++) | |
599 | ACPI_FREE(props->bufs[i]); | |
600 | kvfree(props); | |
3bd561e1 SA |
601 | } |
602 | } | |
603 | ||
445b0eb0 RW |
604 | static void acpi_destroy_nondev_subnodes(struct list_head *list) |
605 | { | |
606 | struct acpi_data_node *dn, *next; | |
607 | ||
608 | if (list_empty(list)) | |
609 | return; | |
610 | ||
611 | list_for_each_entry_safe_reverse(dn, next, list, sibling) { | |
612 | acpi_destroy_nondev_subnodes(&dn->data.subnodes); | |
263b4c1a | 613 | wait_for_completion(&dn->kobj_done); |
445b0eb0 RW |
614 | list_del(&dn->sibling); |
615 | ACPI_FREE((void *)dn->data.pointer); | |
3bd561e1 | 616 | acpi_free_device_properties(&dn->data.properties); |
445b0eb0 RW |
617 | kfree(dn); |
618 | } | |
619 | } | |
620 | ||
ffdcd955 MW |
621 | void acpi_free_properties(struct acpi_device *adev) |
622 | { | |
1d52f109 | 623 | acpi_untie_nondev_subnodes(&adev->data); |
445b0eb0 | 624 | acpi_destroy_nondev_subnodes(&adev->data.subnodes); |
ffdcd955 | 625 | ACPI_FREE((void *)adev->data.pointer); |
733e6251 | 626 | adev->data.of_compatible = NULL; |
ffdcd955 | 627 | adev->data.pointer = NULL; |
3bd561e1 | 628 | acpi_free_device_properties(&adev->data.properties); |
ffdcd955 MW |
629 | } |
630 | ||
631 | /** | |
3a7a2ab8 RW |
632 | * acpi_data_get_property - return an ACPI property with given name |
633 | * @data: ACPI device deta object to get the property from | |
ffdcd955 MW |
634 | * @name: Name of the property |
635 | * @type: Expected property type | |
636 | * @obj: Location to store the property value (if not %NULL) | |
637 | * | |
638 | * Look up a property with @name and store a pointer to the resulting ACPI | |
639 | * object at the location pointed to by @obj if found. | |
640 | * | |
641 | * Callers must not attempt to free the returned objects. These objects will be | |
3a7a2ab8 | 642 | * freed by the ACPI core automatically during the removal of @data. |
ffdcd955 MW |
643 | * |
644 | * Return: %0 if property with @name has been found (success), | |
645 | * %-EINVAL if the arguments are invalid, | |
3c60f114 | 646 | * %-EINVAL if the property doesn't exist, |
ffdcd955 MW |
647 | * %-EPROTO if the property value type doesn't match @type. |
648 | */ | |
99a85464 | 649 | static int acpi_data_get_property(const struct acpi_device_data *data, |
3a7a2ab8 RW |
650 | const char *name, acpi_object_type type, |
651 | const union acpi_object **obj) | |
ffdcd955 | 652 | { |
5f5e4890 | 653 | const struct acpi_device_properties *props; |
ffdcd955 | 654 | |
3a7a2ab8 | 655 | if (!data || !name) |
ffdcd955 MW |
656 | return -EINVAL; |
657 | ||
5f5e4890 | 658 | if (!data->pointer || list_empty(&data->properties)) |
3c60f114 | 659 | return -EINVAL; |
ffdcd955 | 660 | |
5f5e4890 MW |
661 | list_for_each_entry(props, &data->properties, list) { |
662 | const union acpi_object *properties; | |
663 | unsigned int i; | |
ffdcd955 | 664 | |
5f5e4890 MW |
665 | properties = props->properties; |
666 | for (i = 0; i < properties->package.count; i++) { | |
667 | const union acpi_object *propname, *propvalue; | |
668 | const union acpi_object *property; | |
669 | ||
670 | property = &properties->package.elements[i]; | |
ffdcd955 | 671 | |
5f5e4890 MW |
672 | propname = &property->package.elements[0]; |
673 | propvalue = &property->package.elements[1]; | |
ffdcd955 | 674 | |
5f5e4890 MW |
675 | if (!strcmp(name, propname->string.pointer)) { |
676 | if (type != ACPI_TYPE_ANY && | |
677 | propvalue->type != type) | |
678 | return -EPROTO; | |
679 | if (obj) | |
680 | *obj = propvalue; | |
ffdcd955 | 681 | |
5f5e4890 MW |
682 | return 0; |
683 | } | |
ffdcd955 MW |
684 | } |
685 | } | |
3c60f114 | 686 | return -EINVAL; |
ffdcd955 | 687 | } |
3a7a2ab8 RW |
688 | |
689 | /** | |
690 | * acpi_dev_get_property - return an ACPI property with given name. | |
691 | * @adev: ACPI device to get the property from. | |
692 | * @name: Name of the property. | |
693 | * @type: Expected property type. | |
694 | * @obj: Location to store the property value (if not %NULL). | |
695 | */ | |
99a85464 | 696 | int acpi_dev_get_property(const struct acpi_device *adev, const char *name, |
3a7a2ab8 RW |
697 | acpi_object_type type, const union acpi_object **obj) |
698 | { | |
699 | return adev ? acpi_data_get_property(&adev->data, name, type, obj) : -EINVAL; | |
700 | } | |
ffdcd955 MW |
701 | EXPORT_SYMBOL_GPL(acpi_dev_get_property); |
702 | ||
99a85464 SA |
703 | static const struct acpi_device_data * |
704 | acpi_device_data_of_node(const struct fwnode_handle *fwnode) | |
3a7a2ab8 | 705 | { |
db3e50f3 | 706 | if (is_acpi_device_node(fwnode)) { |
99a85464 | 707 | const struct acpi_device *adev = to_acpi_device_node(fwnode); |
3a7a2ab8 | 708 | return &adev->data; |
9978f446 AS |
709 | } |
710 | if (is_acpi_data_node(fwnode)) { | |
99a85464 | 711 | const struct acpi_data_node *dn = to_acpi_data_node(fwnode); |
3a7a2ab8 RW |
712 | return &dn->data; |
713 | } | |
714 | return NULL; | |
715 | } | |
716 | ||
ffdcd955 | 717 | /** |
3a7a2ab8 RW |
718 | * acpi_node_prop_get - return an ACPI property with given name. |
719 | * @fwnode: Firmware node to get the property from. | |
720 | * @propname: Name of the property. | |
721 | * @valptr: Location to store a pointer to the property value (if not %NULL). | |
722 | */ | |
99a85464 SA |
723 | int acpi_node_prop_get(const struct fwnode_handle *fwnode, |
724 | const char *propname, void **valptr) | |
3a7a2ab8 RW |
725 | { |
726 | return acpi_data_get_property(acpi_device_data_of_node(fwnode), | |
727 | propname, ACPI_TYPE_ANY, | |
728 | (const union acpi_object **)valptr); | |
729 | } | |
730 | ||
731 | /** | |
732 | * acpi_data_get_property_array - return an ACPI array property with given name | |
c82ff99e | 733 | * @data: ACPI data object to get the property from |
ffdcd955 MW |
734 | * @name: Name of the property |
735 | * @type: Expected type of array elements | |
736 | * @obj: Location to store a pointer to the property value (if not NULL) | |
737 | * | |
738 | * Look up an array property with @name and store a pointer to the resulting | |
739 | * ACPI object at the location pointed to by @obj if found. | |
740 | * | |
741 | * Callers must not attempt to free the returned objects. Those objects will be | |
3a7a2ab8 | 742 | * freed by the ACPI core automatically during the removal of @data. |
ffdcd955 MW |
743 | * |
744 | * Return: %0 if array property (package) with @name has been found (success), | |
745 | * %-EINVAL if the arguments are invalid, | |
3c60f114 | 746 | * %-EINVAL if the property doesn't exist, |
ffdcd955 MW |
747 | * %-EPROTO if the property is not a package or the type of its elements |
748 | * doesn't match @type. | |
749 | */ | |
99a85464 | 750 | static int acpi_data_get_property_array(const struct acpi_device_data *data, |
3a7a2ab8 RW |
751 | const char *name, |
752 | acpi_object_type type, | |
753 | const union acpi_object **obj) | |
ffdcd955 MW |
754 | { |
755 | const union acpi_object *prop; | |
756 | int ret, i; | |
757 | ||
3a7a2ab8 | 758 | ret = acpi_data_get_property(data, name, ACPI_TYPE_PACKAGE, &prop); |
ffdcd955 MW |
759 | if (ret) |
760 | return ret; | |
761 | ||
762 | if (type != ACPI_TYPE_ANY) { | |
763 | /* Check that all elements are of correct type. */ | |
764 | for (i = 0; i < prop->package.count; i++) | |
765 | if (prop->package.elements[i].type != type) | |
766 | return -EPROTO; | |
767 | } | |
768 | if (obj) | |
769 | *obj = prop; | |
770 | ||
771 | return 0; | |
772 | } | |
ffdcd955 | 773 | |
4eb0c3bf SA |
774 | static struct fwnode_handle * |
775 | acpi_fwnode_get_named_child_node(const struct fwnode_handle *fwnode, | |
776 | const char *childname) | |
777 | { | |
778 | struct fwnode_handle *child; | |
ee48cef6 HK |
779 | |
780 | fwnode_for_each_child_node(fwnode, child) { | |
781 | if (is_acpi_data_node(child)) { | |
782 | if (acpi_data_node_match(child, childname)) | |
783 | return child; | |
784 | continue; | |
785 | } | |
786 | ||
cbdd865a HK |
787 | if (!strncmp(acpi_device_bid(to_acpi_device_node(child)), |
788 | childname, ACPI_NAMESEG_SIZE)) | |
4eb0c3bf | 789 | return child; |
ee48cef6 | 790 | } |
4eb0c3bf SA |
791 | |
792 | return NULL; | |
793 | } | |
794 | ||
1aef25d9 SA |
795 | static int acpi_get_ref_args(struct fwnode_reference_args *args, |
796 | struct fwnode_handle *ref_fwnode, | |
797 | const union acpi_object **element, | |
798 | const union acpi_object *end, size_t num_args) | |
799 | { | |
800 | u32 nargs = 0, i; | |
801 | ||
802 | /* | |
803 | * Find the referred data extension node under the | |
804 | * referred device node. | |
805 | */ | |
806 | for (; *element < end && (*element)->type == ACPI_TYPE_STRING; | |
807 | (*element)++) { | |
808 | const char *child_name = (*element)->string.pointer; | |
809 | ||
810 | ref_fwnode = acpi_fwnode_get_named_child_node(ref_fwnode, child_name); | |
811 | if (!ref_fwnode) | |
812 | return -EINVAL; | |
813 | } | |
814 | ||
815 | /* | |
816 | * Assume the following integer elements are all args. Stop counting on | |
817 | * the first reference or end of the package arguments. In case of | |
818 | * neither reference, nor integer, return an error, we can't parse it. | |
819 | */ | |
820 | for (i = 0; (*element) + i < end && i < num_args; i++) { | |
821 | acpi_object_type type = (*element)[i].type; | |
822 | ||
823 | if (type == ACPI_TYPE_LOCAL_REFERENCE) | |
824 | break; | |
825 | ||
826 | if (type == ACPI_TYPE_INTEGER) | |
827 | nargs++; | |
828 | else | |
829 | return -EINVAL; | |
830 | } | |
831 | ||
832 | if (nargs > NR_FWNODE_REFERENCE_ARGS) | |
833 | return -EINVAL; | |
834 | ||
835 | if (args) { | |
836 | args->fwnode = ref_fwnode; | |
837 | args->nargs = nargs; | |
838 | for (i = 0; i < nargs; i++) | |
839 | args->args[i] = (*element)[i].integer.value; | |
840 | } | |
841 | ||
842 | (*element) += nargs; | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
ffdcd955 | 847 | /** |
b60e4ea4 MW |
848 | * __acpi_node_get_property_reference - returns handle to the referenced object |
849 | * @fwnode: Firmware node to get the property from | |
504a3374 | 850 | * @propname: Name of the property |
ffdcd955 | 851 | * @index: Index of the reference to return |
b60e4ea4 | 852 | * @num_args: Maximum number of arguments after each reference |
ffdcd955 MW |
853 | * @args: Location to store the returned reference with optional arguments |
854 | * | |
855 | * Find property with @name, verifify that it is a package containing at least | |
856 | * one object reference and if so, store the ACPI device object pointer to the | |
60ba032e RW |
857 | * target object in @args->adev. If the reference includes arguments, store |
858 | * them in the @args->args[] array. | |
ffdcd955 | 859 | * |
60ba032e RW |
860 | * If there's more than one reference in the property value package, @index is |
861 | * used to select the one to return. | |
ffdcd955 | 862 | * |
b60e4ea4 MW |
863 | * It is possible to leave holes in the property value set like in the |
864 | * example below: | |
865 | * | |
866 | * Package () { | |
867 | * "cs-gpios", | |
868 | * Package () { | |
869 | * ^GPIO, 19, 0, 0, | |
870 | * ^GPIO, 20, 0, 0, | |
871 | * 0, | |
872 | * ^GPIO, 21, 0, 0, | |
873 | * } | |
874 | * } | |
875 | * | |
c343bc2c SA |
876 | * Calling this function with index %2 or index %3 return %-ENOENT. If the |
877 | * property does not contain any more values %-ENOENT is returned. The NULL | |
878 | * entry must be single integer and preferably contain value %0. | |
b60e4ea4 | 879 | * |
ffdcd955 MW |
880 | * Return: %0 on success, negative error code on failure. |
881 | */ | |
99a85464 | 882 | int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode, |
b60e4ea4 | 883 | const char *propname, size_t index, size_t num_args, |
977d5ad3 | 884 | struct fwnode_reference_args *args) |
ffdcd955 MW |
885 | { |
886 | const union acpi_object *element, *end; | |
887 | const union acpi_object *obj; | |
99a85464 | 888 | const struct acpi_device_data *data; |
ffdcd955 MW |
889 | struct acpi_device *device; |
890 | int ret, idx = 0; | |
891 | ||
b60e4ea4 MW |
892 | data = acpi_device_data_of_node(fwnode); |
893 | if (!data) | |
c343bc2c | 894 | return -ENOENT; |
b60e4ea4 | 895 | |
504a3374 | 896 | ret = acpi_data_get_property(data, propname, ACPI_TYPE_ANY, &obj); |
ffdcd955 | 897 | if (ret) |
51858a27 | 898 | return ret == -EINVAL ? -ENOENT : -EINVAL; |
ffdcd955 | 899 | |
88af7bbd SA |
900 | switch (obj->type) { |
901 | case ACPI_TYPE_LOCAL_REFERENCE: | |
902 | /* Plain single reference without arguments. */ | |
60ba032e | 903 | if (index) |
babc92da | 904 | return -ENOENT; |
ffdcd955 | 905 | |
99ece713 RW |
906 | device = acpi_fetch_acpi_dev(obj->reference.handle); |
907 | if (!device) | |
908 | return -EINVAL; | |
ffdcd955 | 909 | |
977d5ad3 | 910 | args->fwnode = acpi_fwnode_handle(device); |
ffdcd955 MW |
911 | args->nargs = 0; |
912 | return 0; | |
88af7bbd SA |
913 | case ACPI_TYPE_PACKAGE: |
914 | /* | |
915 | * If it is not a single reference, then it is a package of | |
916 | * references followed by number of ints as follows: | |
917 | * | |
918 | * Package () { REF, INT, REF, INT, INT } | |
919 | * | |
920 | * The index argument is then used to determine which reference | |
921 | * the caller wants (along with the arguments). | |
922 | */ | |
923 | break; | |
924 | default: | |
925 | return -EINVAL; | |
ffdcd955 MW |
926 | } |
927 | ||
51858a27 SA |
928 | if (index >= obj->package.count) |
929 | return -ENOENT; | |
ffdcd955 MW |
930 | |
931 | element = obj->package.elements; | |
932 | end = element + obj->package.count; | |
933 | ||
934 | while (element < end) { | |
88af7bbd SA |
935 | switch (element->type) { |
936 | case ACPI_TYPE_LOCAL_REFERENCE: | |
99ece713 RW |
937 | device = acpi_fetch_acpi_dev(element->reference.handle); |
938 | if (!device) | |
c343bc2c | 939 | return -EINVAL; |
b60e4ea4 | 940 | |
b60e4ea4 MW |
941 | element++; |
942 | ||
1aef25d9 SA |
943 | ret = acpi_get_ref_args(idx == index ? args : NULL, |
944 | acpi_fwnode_handle(device), | |
945 | &element, end, num_args); | |
946 | if (ret < 0) | |
947 | return ret; | |
ffdcd955 | 948 | |
1aef25d9 | 949 | if (idx == index) |
b60e4ea4 | 950 | return 0; |
b60e4ea4 | 951 | |
88af7bbd SA |
952 | break; |
953 | case ACPI_TYPE_INTEGER: | |
b60e4ea4 MW |
954 | if (idx == index) |
955 | return -ENOENT; | |
956 | element++; | |
88af7bbd SA |
957 | break; |
958 | default: | |
c343bc2c | 959 | return -EINVAL; |
ffdcd955 MW |
960 | } |
961 | ||
b60e4ea4 | 962 | idx++; |
ffdcd955 MW |
963 | } |
964 | ||
c343bc2c | 965 | return -ENOENT; |
504a3374 | 966 | } |
b60e4ea4 | 967 | EXPORT_SYMBOL_GPL(__acpi_node_get_property_reference); |
b31384fa | 968 | |
99a85464 | 969 | static int acpi_data_prop_read_single(const struct acpi_device_data *data, |
3a7a2ab8 RW |
970 | const char *propname, |
971 | enum dev_prop_type proptype, void *val) | |
b31384fa RW |
972 | { |
973 | const union acpi_object *obj; | |
974 | int ret; | |
975 | ||
b31384fa | 976 | if (proptype >= DEV_PROP_U8 && proptype <= DEV_PROP_U64) { |
3a7a2ab8 | 977 | ret = acpi_data_get_property(data, propname, ACPI_TYPE_INTEGER, &obj); |
b31384fa RW |
978 | if (ret) |
979 | return ret; | |
980 | ||
981 | switch (proptype) { | |
982 | case DEV_PROP_U8: | |
983 | if (obj->integer.value > U8_MAX) | |
984 | return -EOVERFLOW; | |
e1e6bd29 RW |
985 | |
986 | if (val) | |
987 | *(u8 *)val = obj->integer.value; | |
988 | ||
b31384fa RW |
989 | break; |
990 | case DEV_PROP_U16: | |
991 | if (obj->integer.value > U16_MAX) | |
992 | return -EOVERFLOW; | |
e1e6bd29 RW |
993 | |
994 | if (val) | |
995 | *(u16 *)val = obj->integer.value; | |
996 | ||
b31384fa RW |
997 | break; |
998 | case DEV_PROP_U32: | |
999 | if (obj->integer.value > U32_MAX) | |
1000 | return -EOVERFLOW; | |
e1e6bd29 RW |
1001 | |
1002 | if (val) | |
1003 | *(u32 *)val = obj->integer.value; | |
1004 | ||
b31384fa RW |
1005 | break; |
1006 | default: | |
e1e6bd29 RW |
1007 | if (val) |
1008 | *(u64 *)val = obj->integer.value; | |
1009 | ||
b31384fa RW |
1010 | break; |
1011 | } | |
e1e6bd29 RW |
1012 | |
1013 | if (!val) | |
1014 | return 1; | |
b31384fa | 1015 | } else if (proptype == DEV_PROP_STRING) { |
3a7a2ab8 | 1016 | ret = acpi_data_get_property(data, propname, ACPI_TYPE_STRING, &obj); |
b31384fa RW |
1017 | if (ret) |
1018 | return ret; | |
1019 | ||
e1e6bd29 RW |
1020 | if (val) |
1021 | *(char **)val = obj->string.pointer; | |
b0b027ce SA |
1022 | |
1023 | return 1; | |
b31384fa RW |
1024 | } else { |
1025 | ret = -EINVAL; | |
1026 | } | |
1027 | return ret; | |
1028 | } | |
1029 | ||
92304413 SA |
1030 | #define acpi_copy_property_array_uint(items, val, nval) \ |
1031 | ({ \ | |
1032 | typeof(items) __items = items; \ | |
1033 | typeof(val) __val = val; \ | |
1034 | typeof(nval) __nval = nval; \ | |
1035 | size_t i; \ | |
1036 | int ret = 0; \ | |
1037 | \ | |
1038 | for (i = 0; i < __nval; i++) { \ | |
369af6bf SA |
1039 | if (__items->type == ACPI_TYPE_BUFFER) { \ |
1040 | __val[i] = __items->buffer.pointer[i]; \ | |
1041 | continue; \ | |
1042 | } \ | |
92304413 SA |
1043 | if (__items[i].type != ACPI_TYPE_INTEGER) { \ |
1044 | ret = -EPROTO; \ | |
1045 | break; \ | |
1046 | } \ | |
1047 | if (__items[i].integer.value > _Generic(__val, \ | |
06865077 SB |
1048 | u8 *: U8_MAX, \ |
1049 | u16 *: U16_MAX, \ | |
1050 | u32 *: U32_MAX, \ | |
bd9594ae | 1051 | u64 *: U64_MAX)) { \ |
92304413 SA |
1052 | ret = -EOVERFLOW; \ |
1053 | break; \ | |
1054 | } \ | |
1055 | \ | |
1056 | __val[i] = __items[i].integer.value; \ | |
1057 | } \ | |
1058 | ret; \ | |
1059 | }) | |
b31384fa RW |
1060 | |
1061 | static int acpi_copy_property_array_string(const union acpi_object *items, | |
1062 | char **val, size_t nval) | |
1063 | { | |
1064 | int i; | |
1065 | ||
1066 | for (i = 0; i < nval; i++) { | |
1067 | if (items[i].type != ACPI_TYPE_STRING) | |
1068 | return -EPROTO; | |
1069 | ||
1070 | val[i] = items[i].string.pointer; | |
1071 | } | |
b0b027ce | 1072 | return nval; |
b31384fa RW |
1073 | } |
1074 | ||
99a85464 | 1075 | static int acpi_data_prop_read(const struct acpi_device_data *data, |
3a7a2ab8 RW |
1076 | const char *propname, |
1077 | enum dev_prop_type proptype, | |
1078 | void *val, size_t nval) | |
b31384fa RW |
1079 | { |
1080 | const union acpi_object *obj; | |
1081 | const union acpi_object *items; | |
1082 | int ret; | |
1083 | ||
e1e6bd29 | 1084 | if (nval == 1 || !val) { |
3a7a2ab8 | 1085 | ret = acpi_data_prop_read_single(data, propname, proptype, val); |
e1e6bd29 RW |
1086 | /* |
1087 | * The overflow error means that the property is there and it is | |
1088 | * single-value, but its type does not match, so return. | |
1089 | */ | |
1090 | if (ret >= 0 || ret == -EOVERFLOW) | |
b31384fa | 1091 | return ret; |
e1e6bd29 RW |
1092 | |
1093 | /* | |
1094 | * Reading this property as a single-value one failed, but its | |
1095 | * value may still be represented as one-element array, so | |
1096 | * continue. | |
1097 | */ | |
b31384fa RW |
1098 | } |
1099 | ||
3a7a2ab8 | 1100 | ret = acpi_data_get_property_array(data, propname, ACPI_TYPE_ANY, &obj); |
369af6bf SA |
1101 | if (ret && proptype >= DEV_PROP_U8 && proptype <= DEV_PROP_U64) |
1102 | ret = acpi_data_get_property(data, propname, ACPI_TYPE_BUFFER, | |
1103 | &obj); | |
b31384fa RW |
1104 | if (ret) |
1105 | return ret; | |
1106 | ||
369af6bf SA |
1107 | if (!val) { |
1108 | if (obj->type == ACPI_TYPE_BUFFER) | |
1109 | return obj->buffer.length; | |
1110 | ||
b31384fa | 1111 | return obj->package.count; |
369af6bf | 1112 | } |
b31384fa | 1113 | |
369af6bf SA |
1114 | switch (proptype) { |
1115 | case DEV_PROP_STRING: | |
1116 | break; | |
1117 | case DEV_PROP_U8 ... DEV_PROP_U64: | |
1118 | if (obj->type == ACPI_TYPE_BUFFER) { | |
1119 | if (nval > obj->buffer.length) | |
1120 | return -EOVERFLOW; | |
1121 | break; | |
1122 | } | |
1123 | fallthrough; | |
1124 | default: | |
1125 | if (nval > obj->package.count) | |
1126 | return -EOVERFLOW; | |
1127 | break; | |
1128 | } | |
9978f446 | 1129 | if (nval == 0) |
7dc59dc9 | 1130 | return -EINVAL; |
b31384fa | 1131 | |
369af6bf SA |
1132 | if (obj->type != ACPI_TYPE_BUFFER) |
1133 | items = obj->package.elements; | |
1134 | else | |
1135 | items = obj; | |
7dc59dc9 | 1136 | |
b31384fa RW |
1137 | switch (proptype) { |
1138 | case DEV_PROP_U8: | |
92304413 | 1139 | ret = acpi_copy_property_array_uint(items, (u8 *)val, nval); |
b31384fa RW |
1140 | break; |
1141 | case DEV_PROP_U16: | |
92304413 | 1142 | ret = acpi_copy_property_array_uint(items, (u16 *)val, nval); |
b31384fa RW |
1143 | break; |
1144 | case DEV_PROP_U32: | |
92304413 | 1145 | ret = acpi_copy_property_array_uint(items, (u32 *)val, nval); |
b31384fa RW |
1146 | break; |
1147 | case DEV_PROP_U64: | |
92304413 | 1148 | ret = acpi_copy_property_array_uint(items, (u64 *)val, nval); |
b31384fa RW |
1149 | break; |
1150 | case DEV_PROP_STRING: | |
b0b027ce SA |
1151 | ret = acpi_copy_property_array_string( |
1152 | items, (char **)val, | |
1153 | min_t(u32, nval, obj->package.count)); | |
b31384fa RW |
1154 | break; |
1155 | default: | |
1156 | ret = -EINVAL; | |
1157 | break; | |
1158 | } | |
1159 | return ret; | |
1160 | } | |
3a7a2ab8 | 1161 | |
3a7a2ab8 RW |
1162 | /** |
1163 | * acpi_node_prop_read - retrieve the value of an ACPI property with given name. | |
1164 | * @fwnode: Firmware node to get the property from. | |
1165 | * @propname: Name of the property. | |
1166 | * @proptype: Expected property type. | |
1167 | * @val: Location to store the property value (if not %NULL). | |
1168 | * @nval: Size of the array pointed to by @val. | |
1169 | * | |
1170 | * If @val is %NULL, return the number of array elements comprising the value | |
1171 | * of the property. Otherwise, read at most @nval values to the array at the | |
1172 | * location pointed to by @val. | |
1173 | */ | |
325aa816 AS |
1174 | static int acpi_node_prop_read(const struct fwnode_handle *fwnode, |
1175 | const char *propname, enum dev_prop_type proptype, | |
1176 | void *val, size_t nval) | |
3a7a2ab8 RW |
1177 | { |
1178 | return acpi_data_prop_read(acpi_device_data_of_node(fwnode), | |
1179 | propname, proptype, val, nval); | |
1180 | } | |
504a3374 | 1181 | |
fa98b398 RW |
1182 | static int stop_on_next(struct acpi_device *adev, void *data) |
1183 | { | |
1184 | struct acpi_device **ret_p = data; | |
1185 | ||
1186 | if (!*ret_p) { | |
1187 | *ret_p = adev; | |
1188 | return 1; | |
1189 | } | |
1190 | ||
1191 | /* Skip until the "previous" object is found. */ | |
1192 | if (*ret_p == adev) | |
1193 | *ret_p = NULL; | |
1194 | ||
1195 | return 0; | |
1196 | } | |
1197 | ||
504a3374 | 1198 | /** |
34055190 MW |
1199 | * acpi_get_next_subnode - Return the next child node handle for a fwnode |
1200 | * @fwnode: Firmware node to find the next child node for. | |
504a3374 RW |
1201 | * @child: Handle to one of the device's child nodes or a null handle. |
1202 | */ | |
37ba983c | 1203 | struct fwnode_handle *acpi_get_next_subnode(const struct fwnode_handle *fwnode, |
504a3374 RW |
1204 | struct fwnode_handle *child) |
1205 | { | |
fa98b398 | 1206 | struct acpi_device *adev = to_acpi_device_node(fwnode); |
504a3374 | 1207 | |
9978f446 | 1208 | if ((!child || is_acpi_device_node(child)) && adev) { |
fa98b398 | 1209 | struct acpi_device *child_adev = to_acpi_device_node(child); |
0c0bceb7 | 1210 | |
fa98b398 RW |
1211 | acpi_dev_for_each_child(adev, stop_on_next, &child_adev); |
1212 | if (child_adev) | |
1213 | return acpi_fwnode_handle(child_adev); | |
504a3374 | 1214 | |
fa98b398 | 1215 | child = NULL; |
504a3374 RW |
1216 | } |
1217 | ||
db3e50f3 | 1218 | if (!child || is_acpi_data_node(child)) { |
01c1da28 | 1219 | const struct acpi_data_node *data = to_acpi_data_node(fwnode); |
fa98b398 RW |
1220 | const struct list_head *head; |
1221 | struct list_head *next; | |
504a3374 RW |
1222 | struct acpi_data_node *dn; |
1223 | ||
23583f77 PLB |
1224 | /* |
1225 | * We can have a combination of device and data nodes, e.g. with | |
1226 | * hierarchical _DSD properties. Make sure the adev pointer is | |
1227 | * restored before going through data nodes, otherwise we will | |
1228 | * be looking for data_nodes below the last device found instead | |
1229 | * of the common fwnode shared by device_nodes and data_nodes. | |
1230 | */ | |
1231 | adev = to_acpi_device_node(fwnode); | |
0c0bceb7 SA |
1232 | if (adev) |
1233 | head = &adev->data.subnodes; | |
34055190 MW |
1234 | else if (data) |
1235 | head = &data->data.subnodes; | |
1236 | else | |
1237 | return NULL; | |
1238 | ||
504a3374 RW |
1239 | if (list_empty(head)) |
1240 | return NULL; | |
1241 | ||
1242 | if (child) { | |
1243 | dn = to_acpi_data_node(child); | |
1244 | next = dn->sibling.next; | |
1245 | if (next == head) | |
1246 | return NULL; | |
1247 | ||
1248 | dn = list_entry(next, struct acpi_data_node, sibling); | |
1249 | } else { | |
1250 | dn = list_first_entry(head, struct acpi_data_node, sibling); | |
1251 | } | |
1252 | return &dn->fwnode; | |
1253 | } | |
1254 | return NULL; | |
1255 | } | |
dfa672fb MW |
1256 | |
1257 | /** | |
1258 | * acpi_node_get_parent - Return parent fwnode of this fwnode | |
1259 | * @fwnode: Firmware node whose parent to get | |
1260 | * | |
1261 | * Returns parent node of an ACPI device or data firmware node or %NULL if | |
1262 | * not available. | |
1263 | */ | |
985e9ece SA |
1264 | static struct fwnode_handle * |
1265 | acpi_node_get_parent(const struct fwnode_handle *fwnode) | |
dfa672fb MW |
1266 | { |
1267 | if (is_acpi_data_node(fwnode)) { | |
1268 | /* All data nodes have parent pointer so just return that */ | |
1269 | return to_acpi_data_node(fwnode)->parent; | |
9978f446 AS |
1270 | } |
1271 | if (is_acpi_device_node(fwnode)) { | |
98378956 | 1272 | struct acpi_device *parent; |
dfa672fb | 1273 | |
98378956 RW |
1274 | parent = acpi_dev_parent(to_acpi_device_node(fwnode)); |
1275 | if (parent) | |
1276 | return acpi_fwnode_handle(parent); | |
dfa672fb MW |
1277 | } |
1278 | ||
1279 | return NULL; | |
1280 | } | |
79389a83 | 1281 | |
18f1e58d SA |
1282 | /* |
1283 | * Return true if the node is an ACPI graph node. Called on either ports | |
1284 | * or endpoints. | |
1285 | */ | |
1286 | static bool is_acpi_graph_node(struct fwnode_handle *fwnode, | |
1287 | const char *str) | |
1288 | { | |
1289 | unsigned int len = strlen(str); | |
1290 | const char *name; | |
1291 | ||
1292 | if (!len || !is_acpi_data_node(fwnode)) | |
1293 | return false; | |
1294 | ||
1295 | name = to_acpi_data_node(fwnode)->name; | |
1296 | ||
1297 | return (fwnode_property_present(fwnode, "reg") && | |
1298 | !strncmp(name, str, len) && name[len] == '@') || | |
1299 | fwnode_property_present(fwnode, str); | |
1300 | } | |
1301 | ||
79389a83 MW |
1302 | /** |
1303 | * acpi_graph_get_next_endpoint - Get next endpoint ACPI firmware node | |
1304 | * @fwnode: Pointer to the parent firmware node | |
1305 | * @prev: Previous endpoint node or %NULL to get the first | |
1306 | * | |
1307 | * Looks up next endpoint ACPI firmware node below a given @fwnode. Returns | |
0ef74786 SA |
1308 | * %NULL if there is no next endpoint or in case of error. In case of success |
1309 | * the next endpoint is returned. | |
79389a83 | 1310 | */ |
0ef74786 | 1311 | static struct fwnode_handle *acpi_graph_get_next_endpoint( |
37ba983c | 1312 | const struct fwnode_handle *fwnode, struct fwnode_handle *prev) |
79389a83 MW |
1313 | { |
1314 | struct fwnode_handle *port = NULL; | |
1315 | struct fwnode_handle *endpoint; | |
1316 | ||
1317 | if (!prev) { | |
1318 | do { | |
1319 | port = fwnode_get_next_child_node(fwnode, port); | |
18f1e58d SA |
1320 | /* |
1321 | * The names of the port nodes begin with "port@" | |
1322 | * followed by the number of the port node and they also | |
1323 | * have a "reg" property that also has the number of the | |
1324 | * port node. For compatibility reasons a node is also | |
1325 | * recognised as a port node from the "port" property. | |
1326 | */ | |
1327 | if (is_acpi_graph_node(port, "port")) | |
79389a83 MW |
1328 | break; |
1329 | } while (port); | |
1330 | } else { | |
1331 | port = fwnode_get_parent(prev); | |
1332 | } | |
1333 | ||
1334 | if (!port) | |
1335 | return NULL; | |
1336 | ||
1337 | endpoint = fwnode_get_next_child_node(port, prev); | |
1338 | while (!endpoint) { | |
1339 | port = fwnode_get_next_child_node(fwnode, port); | |
1340 | if (!port) | |
1341 | break; | |
18f1e58d | 1342 | if (is_acpi_graph_node(port, "port")) |
79389a83 MW |
1343 | endpoint = fwnode_get_next_child_node(port, NULL); |
1344 | } | |
1345 | ||
18f1e58d SA |
1346 | /* |
1347 | * The names of the endpoint nodes begin with "endpoint@" followed by | |
1348 | * the number of the endpoint node and they also have a "reg" property | |
1349 | * that also has the number of the endpoint node. For compatibility | |
1350 | * reasons a node is also recognised as an endpoint node from the | |
1351 | * "endpoint" property. | |
1352 | */ | |
1353 | if (!is_acpi_graph_node(endpoint, "endpoint")) | |
0ef74786 | 1354 | return NULL; |
79389a83 MW |
1355 | |
1356 | return endpoint; | |
1357 | } | |
1358 | ||
1359 | /** | |
1360 | * acpi_graph_get_child_prop_value - Return a child with a given property value | |
1361 | * @fwnode: device fwnode | |
1362 | * @prop_name: The name of the property to look for | |
1363 | * @val: the desired property value | |
1364 | * | |
1365 | * Return the port node corresponding to a given port number. Returns | |
1366 | * the child node on success, NULL otherwise. | |
1367 | */ | |
1368 | static struct fwnode_handle *acpi_graph_get_child_prop_value( | |
37ba983c SA |
1369 | const struct fwnode_handle *fwnode, const char *prop_name, |
1370 | unsigned int val) | |
79389a83 MW |
1371 | { |
1372 | struct fwnode_handle *child; | |
1373 | ||
1374 | fwnode_for_each_child_node(fwnode, child) { | |
1375 | u32 nr; | |
1376 | ||
b5212f57 | 1377 | if (fwnode_property_read_u32(child, prop_name, &nr)) |
79389a83 MW |
1378 | continue; |
1379 | ||
1380 | if (val == nr) | |
1381 | return child; | |
1382 | } | |
1383 | ||
1384 | return NULL; | |
1385 | } | |
1386 | ||
1387 | ||
1388 | /** | |
3a2650a8 | 1389 | * acpi_graph_get_remote_endpoint - Parses and returns remote end of an endpoint |
1de359d8 | 1390 | * @__fwnode: Endpoint firmware node pointing to a remote device |
79389a83 | 1391 | * |
0ef74786 | 1392 | * Returns the remote endpoint corresponding to @__fwnode. NULL on error. |
79389a83 | 1393 | */ |
0ef74786 SA |
1394 | static struct fwnode_handle * |
1395 | acpi_graph_get_remote_endpoint(const struct fwnode_handle *__fwnode) | |
79389a83 | 1396 | { |
37ba983c | 1397 | struct fwnode_handle *fwnode; |
79389a83 | 1398 | unsigned int port_nr, endpoint_nr; |
977d5ad3 | 1399 | struct fwnode_reference_args args; |
79389a83 MW |
1400 | int ret; |
1401 | ||
1402 | memset(&args, 0, sizeof(args)); | |
37ba983c | 1403 | ret = acpi_node_get_property_reference(__fwnode, "remote-endpoint", 0, |
79389a83 MW |
1404 | &args); |
1405 | if (ret) | |
0ef74786 | 1406 | return NULL; |
79389a83 | 1407 | |
6561eb3d | 1408 | /* Direct endpoint reference? */ |
977d5ad3 | 1409 | if (!is_acpi_device_node(args.fwnode)) |
6561eb3d | 1410 | return args.nargs ? NULL : args.fwnode; |
977d5ad3 | 1411 | |
79389a83 MW |
1412 | /* |
1413 | * Always require two arguments with the reference: port and | |
1414 | * endpoint indices. | |
1415 | */ | |
1416 | if (args.nargs != 2) | |
0ef74786 | 1417 | return NULL; |
79389a83 | 1418 | |
977d5ad3 | 1419 | fwnode = args.fwnode; |
79389a83 MW |
1420 | port_nr = args.args[0]; |
1421 | endpoint_nr = args.args[1]; | |
1422 | ||
79389a83 | 1423 | fwnode = acpi_graph_get_child_prop_value(fwnode, "port", port_nr); |
79389a83 | 1424 | |
18f1e58d | 1425 | return acpi_graph_get_child_prop_value(fwnode, "endpoint", endpoint_nr); |
79389a83 | 1426 | } |
3708184a | 1427 | |
37ba983c | 1428 | static bool acpi_fwnode_device_is_available(const struct fwnode_handle *fwnode) |
2294b3af SA |
1429 | { |
1430 | if (!is_acpi_device_node(fwnode)) | |
1431 | return false; | |
1432 | ||
1433 | return acpi_device_is_present(to_acpi_device_node(fwnode)); | |
1434 | } | |
1435 | ||
55dcbc05 SA |
1436 | static const void * |
1437 | acpi_fwnode_device_get_match_data(const struct fwnode_handle *fwnode, | |
1438 | const struct device *dev) | |
1439 | { | |
1440 | return acpi_device_get_match_data(dev); | |
1441 | } | |
1442 | ||
8c756a0a SA |
1443 | static bool acpi_fwnode_device_dma_supported(const struct fwnode_handle *fwnode) |
1444 | { | |
1445 | return acpi_dma_supported(to_acpi_device_node(fwnode)); | |
1446 | } | |
1447 | ||
1448 | static enum dev_dma_attr | |
1449 | acpi_fwnode_device_get_dma_attr(const struct fwnode_handle *fwnode) | |
1450 | { | |
1451 | return acpi_get_dma_attr(to_acpi_device_node(fwnode)); | |
1452 | } | |
1453 | ||
37ba983c | 1454 | static bool acpi_fwnode_property_present(const struct fwnode_handle *fwnode, |
3708184a SA |
1455 | const char *propname) |
1456 | { | |
1457 | return !acpi_node_prop_get(fwnode, propname, NULL); | |
1458 | } | |
1459 | ||
37ba983c SA |
1460 | static int |
1461 | acpi_fwnode_property_read_int_array(const struct fwnode_handle *fwnode, | |
1462 | const char *propname, | |
1463 | unsigned int elem_size, void *val, | |
1464 | size_t nval) | |
3708184a SA |
1465 | { |
1466 | enum dev_prop_type type; | |
1467 | ||
1468 | switch (elem_size) { | |
1469 | case sizeof(u8): | |
1470 | type = DEV_PROP_U8; | |
1471 | break; | |
1472 | case sizeof(u16): | |
1473 | type = DEV_PROP_U16; | |
1474 | break; | |
1475 | case sizeof(u32): | |
1476 | type = DEV_PROP_U32; | |
1477 | break; | |
1478 | case sizeof(u64): | |
1479 | type = DEV_PROP_U64; | |
1480 | break; | |
1481 | default: | |
1482 | return -ENXIO; | |
1483 | } | |
1484 | ||
1485 | return acpi_node_prop_read(fwnode, propname, type, val, nval); | |
1486 | } | |
1487 | ||
37ba983c SA |
1488 | static int |
1489 | acpi_fwnode_property_read_string_array(const struct fwnode_handle *fwnode, | |
1490 | const char *propname, const char **val, | |
1491 | size_t nval) | |
3708184a SA |
1492 | { |
1493 | return acpi_node_prop_read(fwnode, propname, DEV_PROP_STRING, | |
1494 | val, nval); | |
1495 | } | |
1496 | ||
3e3119d3 SA |
1497 | static int |
1498 | acpi_fwnode_get_reference_args(const struct fwnode_handle *fwnode, | |
1499 | const char *prop, const char *nargs_prop, | |
1500 | unsigned int args_count, unsigned int index, | |
1501 | struct fwnode_reference_args *args) | |
1502 | { | |
977d5ad3 SA |
1503 | return __acpi_node_get_property_reference(fwnode, prop, index, |
1504 | args_count, args); | |
3e3119d3 SA |
1505 | } |
1506 | ||
bc0500c1 SA |
1507 | static const char *acpi_fwnode_get_name(const struct fwnode_handle *fwnode) |
1508 | { | |
1509 | const struct acpi_device *adev; | |
1510 | struct fwnode_handle *parent; | |
1511 | ||
1512 | /* Is this the root node? */ | |
1513 | parent = fwnode_get_parent(fwnode); | |
1514 | if (!parent) | |
1515 | return "\\"; | |
1516 | ||
1517 | fwnode_handle_put(parent); | |
1518 | ||
1519 | if (is_acpi_data_node(fwnode)) { | |
1520 | const struct acpi_data_node *dn = to_acpi_data_node(fwnode); | |
1521 | ||
1522 | return dn->name; | |
1523 | } | |
1524 | ||
1525 | adev = to_acpi_device_node(fwnode); | |
1526 | if (WARN_ON(!adev)) | |
1527 | return NULL; | |
1528 | ||
1529 | return acpi_device_bid(adev); | |
1530 | } | |
1531 | ||
e7e242bc SA |
1532 | static const char * |
1533 | acpi_fwnode_get_name_prefix(const struct fwnode_handle *fwnode) | |
1534 | { | |
1535 | struct fwnode_handle *parent; | |
1536 | ||
1537 | /* Is this the root node? */ | |
1538 | parent = fwnode_get_parent(fwnode); | |
1539 | if (!parent) | |
1540 | return ""; | |
1541 | ||
1542 | /* Is this 2nd node from the root? */ | |
1543 | parent = fwnode_get_next_parent(parent); | |
1544 | if (!parent) | |
1545 | return ""; | |
1546 | ||
1547 | fwnode_handle_put(parent); | |
1548 | ||
1549 | /* ACPI device or data node. */ | |
1550 | return "."; | |
1551 | } | |
1552 | ||
37ba983c SA |
1553 | static struct fwnode_handle * |
1554 | acpi_fwnode_get_parent(struct fwnode_handle *fwnode) | |
1555 | { | |
1556 | return acpi_node_get_parent(fwnode); | |
1557 | } | |
1558 | ||
1559 | static int acpi_fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode, | |
3b27d00e SA |
1560 | struct fwnode_endpoint *endpoint) |
1561 | { | |
1562 | struct fwnode_handle *port_fwnode = fwnode_get_parent(fwnode); | |
1563 | ||
1564 | endpoint->local_fwnode = fwnode; | |
1565 | ||
18f1e58d SA |
1566 | if (fwnode_property_read_u32(port_fwnode, "reg", &endpoint->port)) |
1567 | fwnode_property_read_u32(port_fwnode, "port", &endpoint->port); | |
1568 | if (fwnode_property_read_u32(fwnode, "reg", &endpoint->id)) | |
1569 | fwnode_property_read_u32(fwnode, "endpoint", &endpoint->id); | |
3b27d00e SA |
1570 | |
1571 | return 0; | |
1572 | } | |
1573 | ||
99c63707 SA |
1574 | static int acpi_fwnode_irq_get(const struct fwnode_handle *fwnode, |
1575 | unsigned int index) | |
1576 | { | |
1577 | struct resource res; | |
1578 | int ret; | |
1579 | ||
1580 | ret = acpi_irq_get(ACPI_HANDLE_FWNODE(fwnode), index, &res); | |
1581 | if (ret) | |
1582 | return ret; | |
1583 | ||
1584 | return res.start; | |
1585 | } | |
1586 | ||
db3e50f3 SA |
1587 | #define DECLARE_ACPI_FWNODE_OPS(ops) \ |
1588 | const struct fwnode_operations ops = { \ | |
1589 | .device_is_available = acpi_fwnode_device_is_available, \ | |
146b4dbb | 1590 | .device_get_match_data = acpi_fwnode_device_get_match_data, \ |
8c756a0a SA |
1591 | .device_dma_supported = \ |
1592 | acpi_fwnode_device_dma_supported, \ | |
1593 | .device_get_dma_attr = acpi_fwnode_device_get_dma_attr, \ | |
db3e50f3 SA |
1594 | .property_present = acpi_fwnode_property_present, \ |
1595 | .property_read_int_array = \ | |
1596 | acpi_fwnode_property_read_int_array, \ | |
1597 | .property_read_string_array = \ | |
1598 | acpi_fwnode_property_read_string_array, \ | |
1599 | .get_parent = acpi_node_get_parent, \ | |
1600 | .get_next_child_node = acpi_get_next_subnode, \ | |
1601 | .get_named_child_node = acpi_fwnode_get_named_child_node, \ | |
bc0500c1 | 1602 | .get_name = acpi_fwnode_get_name, \ |
e7e242bc | 1603 | .get_name_prefix = acpi_fwnode_get_name_prefix, \ |
3e3119d3 | 1604 | .get_reference_args = acpi_fwnode_get_reference_args, \ |
db3e50f3 | 1605 | .graph_get_next_endpoint = \ |
0ef74786 | 1606 | acpi_graph_get_next_endpoint, \ |
db3e50f3 | 1607 | .graph_get_remote_endpoint = \ |
0ef74786 | 1608 | acpi_graph_get_remote_endpoint, \ |
37ba983c | 1609 | .graph_get_port_parent = acpi_fwnode_get_parent, \ |
db3e50f3 | 1610 | .graph_parse_endpoint = acpi_fwnode_graph_parse_endpoint, \ |
99c63707 | 1611 | .irq_get = acpi_fwnode_irq_get, \ |
db3e50f3 SA |
1612 | }; \ |
1613 | EXPORT_SYMBOL_GPL(ops) | |
1614 | ||
1615 | DECLARE_ACPI_FWNODE_OPS(acpi_device_fwnode_ops); | |
1616 | DECLARE_ACPI_FWNODE_OPS(acpi_data_fwnode_ops); | |
1617 | const struct fwnode_operations acpi_static_fwnode_ops; | |
9e987b70 JH |
1618 | |
1619 | bool is_acpi_device_node(const struct fwnode_handle *fwnode) | |
1620 | { | |
1621 | return !IS_ERR_OR_NULL(fwnode) && | |
1622 | fwnode->ops == &acpi_device_fwnode_ops; | |
1623 | } | |
1624 | EXPORT_SYMBOL(is_acpi_device_node); | |
1625 | ||
1626 | bool is_acpi_data_node(const struct fwnode_handle *fwnode) | |
1627 | { | |
1628 | return !IS_ERR_OR_NULL(fwnode) && fwnode->ops == &acpi_data_fwnode_ops; | |
1629 | } | |
1630 | EXPORT_SYMBOL(is_acpi_data_node); |