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1da177e4 LT |
1 | /******************************************************************************* |
2 | * | |
3 | * Module Name: rscreate - Create resource lists/tables | |
4 | * | |
5 | ******************************************************************************/ | |
6 | ||
7 | /* | |
25f044e6 | 8 | * Copyright (C) 2000 - 2013, Intel Corp. |
1da177e4 LT |
9 | * All rights reserved. |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
14 | * 1. Redistributions of source code must retain the above copyright | |
15 | * notice, this list of conditions, and the following disclaimer, | |
16 | * without modification. | |
17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
18 | * substantially similar to the "NO WARRANTY" disclaimer below | |
19 | * ("Disclaimer") and any redistribution must be conditioned upon | |
20 | * including a substantially similar Disclaimer requirement for further | |
21 | * binary redistribution. | |
22 | * 3. Neither the names of the above-listed copyright holders nor the names | |
23 | * of any contributors may be used to endorse or promote products derived | |
24 | * from this software without specific prior written permission. | |
25 | * | |
26 | * Alternatively, this software may be distributed under the terms of the | |
27 | * GNU General Public License ("GPL") version 2 as published by the Free | |
28 | * Software Foundation. | |
29 | * | |
30 | * NO WARRANTY | |
31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
41 | * POSSIBILITY OF SUCH DAMAGES. | |
42 | */ | |
43 | ||
1da177e4 | 44 | #include <acpi/acpi.h> |
e2f7a777 LB |
45 | #include "accommon.h" |
46 | #include "acresrc.h" | |
47 | #include "acnamesp.h" | |
1da177e4 LT |
48 | |
49 | #define _COMPONENT ACPI_RESOURCES | |
4be44fcd | 50 | ACPI_MODULE_NAME("rscreate") |
1da177e4 | 51 | |
0e243178 BM |
52 | /******************************************************************************* |
53 | * | |
54 | * FUNCTION: acpi_buffer_to_resource | |
55 | * | |
56 | * PARAMETERS: aml_buffer - Pointer to the resource byte stream | |
57 | * aml_buffer_length - Length of the aml_buffer | |
58 | * resource_ptr - Where the converted resource is returned | |
59 | * | |
60 | * RETURN: Status | |
61 | * | |
62 | * DESCRIPTION: Convert a raw AML buffer to a resource list | |
63 | * | |
64 | ******************************************************************************/ | |
65 | acpi_status | |
66 | acpi_buffer_to_resource(u8 *aml_buffer, | |
67 | u16 aml_buffer_length, | |
68 | struct acpi_resource **resource_ptr) | |
69 | { | |
70 | acpi_status status; | |
71 | acpi_size list_size_needed; | |
72 | void *resource; | |
73 | void *current_resource_ptr; | |
74 | ||
75 | /* | |
76 | * Note: we allow AE_AML_NO_RESOURCE_END_TAG, since an end tag | |
77 | * is not required here. | |
78 | */ | |
79 | ||
80 | /* Get the required length for the converted resource */ | |
81 | ||
82 | status = acpi_rs_get_list_length(aml_buffer, aml_buffer_length, | |
83 | &list_size_needed); | |
84 | if (status == AE_AML_NO_RESOURCE_END_TAG) { | |
85 | status = AE_OK; | |
86 | } | |
87 | if (ACPI_FAILURE(status)) { | |
88 | return (status); | |
89 | } | |
90 | ||
91 | /* Allocate a buffer for the converted resource */ | |
92 | ||
93 | resource = ACPI_ALLOCATE_ZEROED(list_size_needed); | |
94 | current_resource_ptr = resource; | |
95 | if (!resource) { | |
96 | return (AE_NO_MEMORY); | |
97 | } | |
98 | ||
99 | /* Perform the AML-to-Resource conversion */ | |
100 | ||
886308ec | 101 | status = acpi_ut_walk_aml_resources(NULL, aml_buffer, aml_buffer_length, |
0e243178 BM |
102 | acpi_rs_convert_aml_to_resources, |
103 | ¤t_resource_ptr); | |
104 | if (status == AE_AML_NO_RESOURCE_END_TAG) { | |
105 | status = AE_OK; | |
106 | } | |
107 | if (ACPI_FAILURE(status)) { | |
108 | ACPI_FREE(resource); | |
109 | } else { | |
110 | *resource_ptr = resource; | |
111 | } | |
112 | ||
113 | return (status); | |
114 | } | |
115 | ||
1da177e4 LT |
116 | /******************************************************************************* |
117 | * | |
118 | * FUNCTION: acpi_rs_create_resource_list | |
119 | * | |
50eca3eb BM |
120 | * PARAMETERS: aml_buffer - Pointer to the resource byte stream |
121 | * output_buffer - Pointer to the user's buffer | |
1da177e4 | 122 | * |
50eca3eb | 123 | * RETURN: Status: AE_OK if okay, else a valid acpi_status code |
1da177e4 LT |
124 | * If output_buffer is not large enough, output_buffer_length |
125 | * indicates how large output_buffer should be, else it | |
126 | * indicates how may u8 elements of output_buffer are valid. | |
127 | * | |
128 | * DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method | |
129 | * execution and parses the stream to create a linked list | |
130 | * of device resources. | |
131 | * | |
132 | ******************************************************************************/ | |
e0fe0a8d | 133 | |
1da177e4 | 134 | acpi_status |
50eca3eb | 135 | acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer, |
e0fe0a8d | 136 | struct acpi_buffer * output_buffer) |
1da177e4 LT |
137 | { |
138 | ||
4be44fcd | 139 | acpi_status status; |
50eca3eb | 140 | u8 *aml_start; |
4be44fcd | 141 | acpi_size list_size_needed = 0; |
50eca3eb | 142 | u32 aml_buffer_length; |
61686124 | 143 | void *resource; |
1da177e4 | 144 | |
b229cf92 | 145 | ACPI_FUNCTION_TRACE(rs_create_resource_list); |
1da177e4 | 146 | |
b229cf92 | 147 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlBuffer = %p\n", aml_buffer)); |
1da177e4 | 148 | |
44f6c012 RM |
149 | /* Params already validated, so we don't re-validate here */ |
150 | ||
50eca3eb BM |
151 | aml_buffer_length = aml_buffer->buffer.length; |
152 | aml_start = aml_buffer->buffer.pointer; | |
1da177e4 LT |
153 | |
154 | /* | |
50eca3eb | 155 | * Pass the aml_buffer into a module that can calculate |
1da177e4 LT |
156 | * the buffer size needed for the linked list |
157 | */ | |
50eca3eb BM |
158 | status = acpi_rs_get_list_length(aml_start, aml_buffer_length, |
159 | &list_size_needed); | |
4be44fcd | 160 | |
b229cf92 | 161 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n", |
4be44fcd LB |
162 | status, (u32) list_size_needed)); |
163 | if (ACPI_FAILURE(status)) { | |
164 | return_ACPI_STATUS(status); | |
1da177e4 LT |
165 | } |
166 | ||
167 | /* Validate/Allocate/Clear caller buffer */ | |
168 | ||
4be44fcd LB |
169 | status = acpi_ut_initialize_buffer(output_buffer, list_size_needed); |
170 | if (ACPI_FAILURE(status)) { | |
171 | return_ACPI_STATUS(status); | |
1da177e4 LT |
172 | } |
173 | ||
174 | /* Do the conversion */ | |
175 | ||
61686124 | 176 | resource = output_buffer->pointer; |
886308ec | 177 | status = acpi_ut_walk_aml_resources(NULL, aml_start, aml_buffer_length, |
61686124 BM |
178 | acpi_rs_convert_aml_to_resources, |
179 | &resource); | |
4be44fcd LB |
180 | if (ACPI_FAILURE(status)) { |
181 | return_ACPI_STATUS(status); | |
1da177e4 LT |
182 | } |
183 | ||
b229cf92 | 184 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
4be44fcd LB |
185 | output_buffer->pointer, (u32) output_buffer->length)); |
186 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
187 | } |
188 | ||
1da177e4 LT |
189 | /******************************************************************************* |
190 | * | |
191 | * FUNCTION: acpi_rs_create_pci_routing_table | |
192 | * | |
cf48958e BM |
193 | * PARAMETERS: package_object - Pointer to a package containing one |
194 | * of more ACPI_OPERAND_OBJECTs | |
1da177e4 LT |
195 | * output_buffer - Pointer to the user's buffer |
196 | * | |
197 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. | |
198 | * If the output_buffer is too small, the error will be | |
199 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point | |
200 | * to the size buffer needed. | |
201 | * | |
cf48958e | 202 | * DESCRIPTION: Takes the union acpi_operand_object package and creates a |
1da177e4 LT |
203 | * linked list of PCI interrupt descriptions |
204 | * | |
205 | * NOTE: It is the caller's responsibility to ensure that the start of the | |
206 | * output buffer is aligned properly (if necessary). | |
207 | * | |
208 | ******************************************************************************/ | |
209 | ||
210 | acpi_status | |
4be44fcd LB |
211 | acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, |
212 | struct acpi_buffer *output_buffer) | |
1da177e4 | 213 | { |
4be44fcd LB |
214 | u8 *buffer; |
215 | union acpi_operand_object **top_object_list; | |
216 | union acpi_operand_object **sub_object_list; | |
217 | union acpi_operand_object *obj_desc; | |
218 | acpi_size buffer_size_needed = 0; | |
219 | u32 number_of_elements; | |
220 | u32 index; | |
221 | struct acpi_pci_routing_table *user_prt; | |
222 | struct acpi_namespace_node *node; | |
223 | acpi_status status; | |
224 | struct acpi_buffer path_buffer; | |
225 | ||
b229cf92 | 226 | ACPI_FUNCTION_TRACE(rs_create_pci_routing_table); |
1da177e4 LT |
227 | |
228 | /* Params already validated, so we don't re-validate here */ | |
229 | ||
44f6c012 RM |
230 | /* Get the required buffer length */ |
231 | ||
4be44fcd LB |
232 | status = acpi_rs_get_pci_routing_table_length(package_object, |
233 | &buffer_size_needed); | |
234 | if (ACPI_FAILURE(status)) { | |
235 | return_ACPI_STATUS(status); | |
1da177e4 LT |
236 | } |
237 | ||
b229cf92 | 238 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "BufferSizeNeeded = %X\n", |
4be44fcd | 239 | (u32) buffer_size_needed)); |
1da177e4 LT |
240 | |
241 | /* Validate/Allocate/Clear caller buffer */ | |
242 | ||
4be44fcd LB |
243 | status = acpi_ut_initialize_buffer(output_buffer, buffer_size_needed); |
244 | if (ACPI_FAILURE(status)) { | |
245 | return_ACPI_STATUS(status); | |
1da177e4 LT |
246 | } |
247 | ||
248 | /* | |
fd0a4327 | 249 | * Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a |
5df7e6cb | 250 | * package that in turn contains an u64 Address, a u8 Pin, |
fd0a4327 | 251 | * a Name, and a u8 source_index. |
1da177e4 | 252 | */ |
4be44fcd | 253 | top_object_list = package_object->package.elements; |
1da177e4 | 254 | number_of_elements = package_object->package.count; |
4be44fcd LB |
255 | buffer = output_buffer->pointer; |
256 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); | |
1da177e4 LT |
257 | |
258 | for (index = 0; index < number_of_elements; index++) { | |
2f894ef9 | 259 | |
1da177e4 LT |
260 | /* |
261 | * Point user_prt past this current structure | |
262 | * | |
263 | * NOTE: On the first iteration, user_prt->Length will | |
264 | * be zero because we cleared the return buffer earlier | |
265 | */ | |
266 | buffer += user_prt->length; | |
4be44fcd | 267 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
1da177e4 LT |
268 | |
269 | /* | |
270 | * Fill in the Length field with the information we have at this point. | |
271 | * The minus four is to subtract the size of the u8 Source[4] member | |
272 | * because it is added below. | |
273 | */ | |
4be44fcd | 274 | user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4); |
1da177e4 | 275 | |
44f6c012 RM |
276 | /* Each element of the top-level package must also be a package */ |
277 | ||
3371c19c | 278 | if ((*top_object_list)->common.type != ACPI_TYPE_PACKAGE) { |
b8e4d893 | 279 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 280 | "(PRT[%u]) Need sub-package, found %s", |
b8e4d893 BM |
281 | index, |
282 | acpi_ut_get_object_type_name | |
283 | (*top_object_list))); | |
4be44fcd | 284 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
1da177e4 LT |
285 | } |
286 | ||
287 | /* Each sub-package must be of length 4 */ | |
288 | ||
289 | if ((*top_object_list)->package.count != 4) { | |
b8e4d893 | 290 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 291 | "(PRT[%u]) Need package of length 4, found length %u", |
b8e4d893 | 292 | index, (*top_object_list)->package.count)); |
4be44fcd | 293 | return_ACPI_STATUS(AE_AML_PACKAGE_LIMIT); |
1da177e4 LT |
294 | } |
295 | ||
296 | /* | |
297 | * Dereference the sub-package. | |
298 | * The sub_object_list will now point to an array of the four IRQ | |
299 | * elements: [Address, Pin, Source, source_index] | |
300 | */ | |
301 | sub_object_list = (*top_object_list)->package.elements; | |
302 | ||
44f6c012 RM |
303 | /* 1) First subobject: Dereference the PRT.Address */ |
304 | ||
1da177e4 | 305 | obj_desc = sub_object_list[0]; |
3371c19c | 306 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
b8e4d893 | 307 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 308 | "(PRT[%u].Address) Need Integer, found %s", |
b8e4d893 BM |
309 | index, |
310 | acpi_ut_get_object_type_name(obj_desc))); | |
4be44fcd | 311 | return_ACPI_STATUS(AE_BAD_DATA); |
1da177e4 LT |
312 | } |
313 | ||
fd0a4327 BM |
314 | user_prt->address = obj_desc->integer.value; |
315 | ||
44f6c012 RM |
316 | /* 2) Second subobject: Dereference the PRT.Pin */ |
317 | ||
1da177e4 | 318 | obj_desc = sub_object_list[1]; |
3371c19c | 319 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
b8e4d893 | 320 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 321 | "(PRT[%u].Pin) Need Integer, found %s", |
b8e4d893 BM |
322 | index, |
323 | acpi_ut_get_object_type_name(obj_desc))); | |
4be44fcd | 324 | return_ACPI_STATUS(AE_BAD_DATA); |
1da177e4 LT |
325 | } |
326 | ||
fd0a4327 BM |
327 | user_prt->pin = (u32) obj_desc->integer.value; |
328 | ||
d0e184ab BM |
329 | /* |
330 | * If the BIOS has erroneously reversed the _PRT source_name (index 2) | |
331 | * and the source_index (index 3), fix it. _PRT is important enough to | |
332 | * workaround this BIOS error. This also provides compatibility with | |
333 | * other ACPI implementations. | |
334 | */ | |
335 | obj_desc = sub_object_list[3]; | |
3371c19c | 336 | if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) { |
d0e184ab BM |
337 | sub_object_list[3] = sub_object_list[2]; |
338 | sub_object_list[2] = obj_desc; | |
339 | ||
340 | ACPI_WARNING((AE_INFO, | |
341 | "(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed", | |
342 | index)); | |
343 | } | |
344 | ||
b8e4d893 BM |
345 | /* |
346 | * 3) Third subobject: Dereference the PRT.source_name | |
347 | * The name may be unresolved (slack mode), so allow a null object | |
348 | */ | |
82babbb3 | 349 | obj_desc = sub_object_list[2]; |
b8e4d893 | 350 | if (obj_desc) { |
3371c19c | 351 | switch (obj_desc->common.type) { |
b8e4d893 BM |
352 | case ACPI_TYPE_LOCAL_REFERENCE: |
353 | ||
1044f1f6 BM |
354 | if (obj_desc->reference.class != |
355 | ACPI_REFCLASS_NAME) { | |
b8e4d893 | 356 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 357 | "(PRT[%u].Source) Need name, found Reference Class 0x%X", |
b8e4d893 | 358 | index, |
1044f1f6 | 359 | obj_desc->reference.class)); |
b8e4d893 BM |
360 | return_ACPI_STATUS(AE_BAD_DATA); |
361 | } | |
362 | ||
363 | node = obj_desc->reference.node; | |
364 | ||
365 | /* Use *remaining* length of the buffer as max for pathname */ | |
366 | ||
367 | path_buffer.length = output_buffer->length - | |
368 | (u32) ((u8 *) user_prt->source - | |
369 | (u8 *) output_buffer->pointer); | |
370 | path_buffer.pointer = user_prt->source; | |
371 | ||
372 | status = | |
373 | acpi_ns_handle_to_pathname((acpi_handle) | |
374 | node, | |
375 | &path_buffer); | |
376 | ||
377 | /* +1 to include null terminator */ | |
378 | ||
379 | user_prt->length += | |
380 | (u32) ACPI_STRLEN(user_prt->source) + 1; | |
381 | break; | |
382 | ||
383 | case ACPI_TYPE_STRING: | |
384 | ||
385 | ACPI_STRCPY(user_prt->source, | |
386 | obj_desc->string.pointer); | |
387 | ||
388 | /* | |
389 | * Add to the Length field the length of the string | |
390 | * (add 1 for terminator) | |
391 | */ | |
392 | user_prt->length += obj_desc->string.length + 1; | |
393 | break; | |
394 | ||
395 | case ACPI_TYPE_INTEGER: | |
396 | /* | |
397 | * If this is a number, then the Source Name is NULL, since the | |
398 | * entire buffer was zeroed out, we can leave this alone. | |
399 | * | |
400 | * Add to the Length field the length of the u32 NULL | |
401 | */ | |
402 | user_prt->length += sizeof(u32); | |
403 | break; | |
404 | ||
405 | default: | |
406 | ||
407 | ACPI_ERROR((AE_INFO, | |
f6a22b0b | 408 | "(PRT[%u].Source) Need Ref/String/Integer, found %s", |
b8e4d893 BM |
409 | index, |
410 | acpi_ut_get_object_type_name | |
411 | (obj_desc))); | |
4be44fcd | 412 | return_ACPI_STATUS(AE_BAD_DATA); |
1da177e4 | 413 | } |
1da177e4 LT |
414 | } |
415 | ||
416 | /* Now align the current length */ | |
417 | ||
4be44fcd | 418 | user_prt->length = |
958dd242 | 419 | (u32) ACPI_ROUND_UP_TO_64BIT(user_prt->length); |
1da177e4 | 420 | |
44f6c012 RM |
421 | /* 4) Fourth subobject: Dereference the PRT.source_index */ |
422 | ||
82babbb3 | 423 | obj_desc = sub_object_list[3]; |
3371c19c | 424 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
b8e4d893 | 425 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 426 | "(PRT[%u].SourceIndex) Need Integer, found %s", |
b8e4d893 BM |
427 | index, |
428 | acpi_ut_get_object_type_name(obj_desc))); | |
4be44fcd | 429 | return_ACPI_STATUS(AE_BAD_DATA); |
1da177e4 LT |
430 | } |
431 | ||
fd0a4327 BM |
432 | user_prt->source_index = (u32) obj_desc->integer.value; |
433 | ||
1da177e4 LT |
434 | /* Point to the next union acpi_operand_object in the top level package */ |
435 | ||
436 | top_object_list++; | |
437 | } | |
438 | ||
b229cf92 | 439 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
4be44fcd LB |
440 | output_buffer->pointer, (u32) output_buffer->length)); |
441 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
442 | } |
443 | ||
1da177e4 LT |
444 | /******************************************************************************* |
445 | * | |
50eca3eb | 446 | * FUNCTION: acpi_rs_create_aml_resources |
1da177e4 LT |
447 | * |
448 | * PARAMETERS: linked_list_buffer - Pointer to the resource linked list | |
449 | * output_buffer - Pointer to the user's buffer | |
450 | * | |
451 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. | |
452 | * If the output_buffer is too small, the error will be | |
453 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point | |
454 | * to the size buffer needed. | |
455 | * | |
456 | * DESCRIPTION: Takes the linked list of device resources and | |
457 | * creates a bytestream to be used as input for the | |
458 | * _SRS control method. | |
459 | * | |
460 | ******************************************************************************/ | |
461 | ||
462 | acpi_status | |
50eca3eb BM |
463 | acpi_rs_create_aml_resources(struct acpi_resource *linked_list_buffer, |
464 | struct acpi_buffer *output_buffer) | |
1da177e4 | 465 | { |
4be44fcd | 466 | acpi_status status; |
50eca3eb | 467 | acpi_size aml_size_needed = 0; |
1da177e4 | 468 | |
b229cf92 | 469 | ACPI_FUNCTION_TRACE(rs_create_aml_resources); |
1da177e4 | 470 | |
b229cf92 | 471 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "LinkedListBuffer = %p\n", |
4be44fcd | 472 | linked_list_buffer)); |
1da177e4 LT |
473 | |
474 | /* | |
475 | * Params already validated, so we don't re-validate here | |
476 | * | |
477 | * Pass the linked_list_buffer into a module that calculates | |
478 | * the buffer size needed for the byte stream. | |
479 | */ | |
50eca3eb | 480 | status = acpi_rs_get_aml_length(linked_list_buffer, &aml_size_needed); |
4be44fcd | 481 | |
b229cf92 | 482 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n", |
3e8214e5 | 483 | (u32)aml_size_needed, acpi_format_exception(status))); |
4be44fcd LB |
484 | if (ACPI_FAILURE(status)) { |
485 | return_ACPI_STATUS(status); | |
1da177e4 LT |
486 | } |
487 | ||
488 | /* Validate/Allocate/Clear caller buffer */ | |
489 | ||
50eca3eb | 490 | status = acpi_ut_initialize_buffer(output_buffer, aml_size_needed); |
4be44fcd LB |
491 | if (ACPI_FAILURE(status)) { |
492 | return_ACPI_STATUS(status); | |
1da177e4 LT |
493 | } |
494 | ||
495 | /* Do the conversion */ | |
496 | ||
4be44fcd | 497 | status = |
50eca3eb BM |
498 | acpi_rs_convert_resources_to_aml(linked_list_buffer, |
499 | aml_size_needed, | |
500 | output_buffer->pointer); | |
4be44fcd LB |
501 | if (ACPI_FAILURE(status)) { |
502 | return_ACPI_STATUS(status); | |
1da177e4 LT |
503 | } |
504 | ||
b229cf92 | 505 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
4be44fcd LB |
506 | output_buffer->pointer, (u32) output_buffer->length)); |
507 | return_ACPI_STATUS(AE_OK); | |
1da177e4 | 508 | } |