Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /******************************************************************************* |
2 | * | |
3 | * Module Name: rscreate - Create resource lists/tables | |
4 | * | |
5 | ******************************************************************************/ | |
6 | ||
7 | /* | |
c8100dc4 | 8 | * Copyright (C) 2000 - 2016, 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 | ||
51e35823 BM |
75 | ACPI_FUNCTION_TRACE(acpi_buffer_to_resource); |
76 | ||
0e243178 BM |
77 | /* |
78 | * Note: we allow AE_AML_NO_RESOURCE_END_TAG, since an end tag | |
79 | * is not required here. | |
80 | */ | |
81 | ||
82 | /* Get the required length for the converted resource */ | |
83 | ||
1fad8738 BM |
84 | status = |
85 | acpi_rs_get_list_length(aml_buffer, aml_buffer_length, | |
86 | &list_size_needed); | |
0e243178 BM |
87 | if (status == AE_AML_NO_RESOURCE_END_TAG) { |
88 | status = AE_OK; | |
89 | } | |
90 | if (ACPI_FAILURE(status)) { | |
51e35823 | 91 | return_ACPI_STATUS(status); |
0e243178 BM |
92 | } |
93 | ||
94 | /* Allocate a buffer for the converted resource */ | |
95 | ||
96 | resource = ACPI_ALLOCATE_ZEROED(list_size_needed); | |
97 | current_resource_ptr = resource; | |
98 | if (!resource) { | |
51e35823 | 99 | return_ACPI_STATUS(AE_NO_MEMORY); |
0e243178 BM |
100 | } |
101 | ||
102 | /* Perform the AML-to-Resource conversion */ | |
103 | ||
886308ec | 104 | status = acpi_ut_walk_aml_resources(NULL, aml_buffer, aml_buffer_length, |
0e243178 BM |
105 | acpi_rs_convert_aml_to_resources, |
106 | ¤t_resource_ptr); | |
107 | if (status == AE_AML_NO_RESOURCE_END_TAG) { | |
108 | status = AE_OK; | |
109 | } | |
110 | if (ACPI_FAILURE(status)) { | |
111 | ACPI_FREE(resource); | |
112 | } else { | |
113 | *resource_ptr = resource; | |
114 | } | |
115 | ||
51e35823 | 116 | return_ACPI_STATUS(status); |
0e243178 BM |
117 | } |
118 | ||
51e35823 BM |
119 | ACPI_EXPORT_SYMBOL(acpi_buffer_to_resource) |
120 | ||
1da177e4 LT |
121 | /******************************************************************************* |
122 | * | |
123 | * FUNCTION: acpi_rs_create_resource_list | |
124 | * | |
50eca3eb BM |
125 | * PARAMETERS: aml_buffer - Pointer to the resource byte stream |
126 | * output_buffer - Pointer to the user's buffer | |
1da177e4 | 127 | * |
50eca3eb | 128 | * RETURN: Status: AE_OK if okay, else a valid acpi_status code |
1da177e4 LT |
129 | * If output_buffer is not large enough, output_buffer_length |
130 | * indicates how large output_buffer should be, else it | |
131 | * indicates how may u8 elements of output_buffer are valid. | |
132 | * | |
133 | * DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method | |
134 | * execution and parses the stream to create a linked list | |
135 | * of device resources. | |
136 | * | |
137 | ******************************************************************************/ | |
1da177e4 | 138 | acpi_status |
50eca3eb | 139 | acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer, |
51e35823 | 140 | struct acpi_buffer *output_buffer) |
1da177e4 LT |
141 | { |
142 | ||
4be44fcd | 143 | acpi_status status; |
50eca3eb | 144 | u8 *aml_start; |
4be44fcd | 145 | acpi_size list_size_needed = 0; |
50eca3eb | 146 | u32 aml_buffer_length; |
61686124 | 147 | void *resource; |
1da177e4 | 148 | |
b229cf92 | 149 | ACPI_FUNCTION_TRACE(rs_create_resource_list); |
1da177e4 | 150 | |
b229cf92 | 151 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlBuffer = %p\n", aml_buffer)); |
1da177e4 | 152 | |
44f6c012 RM |
153 | /* Params already validated, so we don't re-validate here */ |
154 | ||
50eca3eb BM |
155 | aml_buffer_length = aml_buffer->buffer.length; |
156 | aml_start = aml_buffer->buffer.pointer; | |
1da177e4 LT |
157 | |
158 | /* | |
50eca3eb | 159 | * Pass the aml_buffer into a module that can calculate |
1da177e4 LT |
160 | * the buffer size needed for the linked list |
161 | */ | |
50eca3eb BM |
162 | status = acpi_rs_get_list_length(aml_start, aml_buffer_length, |
163 | &list_size_needed); | |
4be44fcd | 164 | |
b229cf92 | 165 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n", |
4be44fcd LB |
166 | status, (u32) list_size_needed)); |
167 | if (ACPI_FAILURE(status)) { | |
168 | return_ACPI_STATUS(status); | |
1da177e4 LT |
169 | } |
170 | ||
171 | /* Validate/Allocate/Clear caller buffer */ | |
172 | ||
4be44fcd LB |
173 | status = acpi_ut_initialize_buffer(output_buffer, list_size_needed); |
174 | if (ACPI_FAILURE(status)) { | |
175 | return_ACPI_STATUS(status); | |
1da177e4 LT |
176 | } |
177 | ||
178 | /* Do the conversion */ | |
179 | ||
61686124 | 180 | resource = output_buffer->pointer; |
886308ec | 181 | status = acpi_ut_walk_aml_resources(NULL, aml_start, aml_buffer_length, |
61686124 BM |
182 | acpi_rs_convert_aml_to_resources, |
183 | &resource); | |
4be44fcd LB |
184 | if (ACPI_FAILURE(status)) { |
185 | return_ACPI_STATUS(status); | |
1da177e4 LT |
186 | } |
187 | ||
b229cf92 | 188 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
4be44fcd LB |
189 | output_buffer->pointer, (u32) output_buffer->length)); |
190 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
191 | } |
192 | ||
1da177e4 LT |
193 | /******************************************************************************* |
194 | * | |
195 | * FUNCTION: acpi_rs_create_pci_routing_table | |
196 | * | |
cf48958e BM |
197 | * PARAMETERS: package_object - Pointer to a package containing one |
198 | * of more ACPI_OPERAND_OBJECTs | |
1da177e4 LT |
199 | * output_buffer - Pointer to the user's buffer |
200 | * | |
201 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. | |
202 | * If the output_buffer is too small, the error will be | |
203 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point | |
204 | * to the size buffer needed. | |
205 | * | |
cf48958e | 206 | * DESCRIPTION: Takes the union acpi_operand_object package and creates a |
1da177e4 LT |
207 | * linked list of PCI interrupt descriptions |
208 | * | |
209 | * NOTE: It is the caller's responsibility to ensure that the start of the | |
210 | * output buffer is aligned properly (if necessary). | |
211 | * | |
212 | ******************************************************************************/ | |
213 | ||
214 | acpi_status | |
4be44fcd LB |
215 | acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, |
216 | struct acpi_buffer *output_buffer) | |
1da177e4 | 217 | { |
4be44fcd LB |
218 | u8 *buffer; |
219 | union acpi_operand_object **top_object_list; | |
220 | union acpi_operand_object **sub_object_list; | |
221 | union acpi_operand_object *obj_desc; | |
222 | acpi_size buffer_size_needed = 0; | |
223 | u32 number_of_elements; | |
224 | u32 index; | |
225 | struct acpi_pci_routing_table *user_prt; | |
226 | struct acpi_namespace_node *node; | |
227 | acpi_status status; | |
228 | struct acpi_buffer path_buffer; | |
229 | ||
b229cf92 | 230 | ACPI_FUNCTION_TRACE(rs_create_pci_routing_table); |
1da177e4 LT |
231 | |
232 | /* Params already validated, so we don't re-validate here */ | |
233 | ||
44f6c012 RM |
234 | /* Get the required buffer length */ |
235 | ||
1fad8738 BM |
236 | status = |
237 | acpi_rs_get_pci_routing_table_length(package_object, | |
238 | &buffer_size_needed); | |
4be44fcd LB |
239 | if (ACPI_FAILURE(status)) { |
240 | return_ACPI_STATUS(status); | |
1da177e4 LT |
241 | } |
242 | ||
b229cf92 | 243 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "BufferSizeNeeded = %X\n", |
4be44fcd | 244 | (u32) buffer_size_needed)); |
1da177e4 LT |
245 | |
246 | /* Validate/Allocate/Clear caller buffer */ | |
247 | ||
4be44fcd LB |
248 | status = acpi_ut_initialize_buffer(output_buffer, buffer_size_needed); |
249 | if (ACPI_FAILURE(status)) { | |
250 | return_ACPI_STATUS(status); | |
1da177e4 LT |
251 | } |
252 | ||
253 | /* | |
fd0a4327 | 254 | * Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a |
5df7e6cb | 255 | * package that in turn contains an u64 Address, a u8 Pin, |
fd0a4327 | 256 | * a Name, and a u8 source_index. |
1da177e4 | 257 | */ |
4be44fcd | 258 | top_object_list = package_object->package.elements; |
1da177e4 | 259 | number_of_elements = package_object->package.count; |
4be44fcd LB |
260 | buffer = output_buffer->pointer; |
261 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); | |
1da177e4 LT |
262 | |
263 | for (index = 0; index < number_of_elements; index++) { | |
2f894ef9 | 264 | |
1da177e4 LT |
265 | /* |
266 | * Point user_prt past this current structure | |
267 | * | |
268 | * NOTE: On the first iteration, user_prt->Length will | |
269 | * be zero because we cleared the return buffer earlier | |
270 | */ | |
271 | buffer += user_prt->length; | |
4be44fcd | 272 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
1da177e4 LT |
273 | |
274 | /* | |
1fad8738 BM |
275 | * Fill in the Length field with the information we have at this |
276 | * point. The minus four is to subtract the size of the u8 | |
277 | * Source[4] member because it is added below. | |
1da177e4 | 278 | */ |
4be44fcd | 279 | user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4); |
1da177e4 | 280 | |
0a16d12a | 281 | /* Each subpackage must be of length 4 */ |
1da177e4 LT |
282 | |
283 | if ((*top_object_list)->package.count != 4) { | |
b8e4d893 | 284 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 285 | "(PRT[%u]) Need package of length 4, found length %u", |
b8e4d893 | 286 | index, (*top_object_list)->package.count)); |
4be44fcd | 287 | return_ACPI_STATUS(AE_AML_PACKAGE_LIMIT); |
1da177e4 LT |
288 | } |
289 | ||
290 | /* | |
0a16d12a | 291 | * Dereference the subpackage. |
1da177e4 LT |
292 | * The sub_object_list will now point to an array of the four IRQ |
293 | * elements: [Address, Pin, Source, source_index] | |
294 | */ | |
295 | sub_object_list = (*top_object_list)->package.elements; | |
296 | ||
44f6c012 RM |
297 | /* 1) First subobject: Dereference the PRT.Address */ |
298 | ||
1da177e4 | 299 | obj_desc = sub_object_list[0]; |
83130649 | 300 | if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) { |
b8e4d893 | 301 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 302 | "(PRT[%u].Address) Need Integer, found %s", |
b8e4d893 BM |
303 | index, |
304 | acpi_ut_get_object_type_name(obj_desc))); | |
4be44fcd | 305 | return_ACPI_STATUS(AE_BAD_DATA); |
1da177e4 LT |
306 | } |
307 | ||
fd0a4327 BM |
308 | user_prt->address = obj_desc->integer.value; |
309 | ||
44f6c012 RM |
310 | /* 2) Second subobject: Dereference the PRT.Pin */ |
311 | ||
1da177e4 | 312 | obj_desc = sub_object_list[1]; |
83130649 | 313 | if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) { |
b8e4d893 | 314 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 315 | "(PRT[%u].Pin) Need Integer, found %s", |
b8e4d893 BM |
316 | index, |
317 | acpi_ut_get_object_type_name(obj_desc))); | |
4be44fcd | 318 | return_ACPI_STATUS(AE_BAD_DATA); |
1da177e4 LT |
319 | } |
320 | ||
fd0a4327 BM |
321 | user_prt->pin = (u32) obj_desc->integer.value; |
322 | ||
b8e4d893 BM |
323 | /* |
324 | * 3) Third subobject: Dereference the PRT.source_name | |
325 | * The name may be unresolved (slack mode), so allow a null object | |
326 | */ | |
82babbb3 | 327 | obj_desc = sub_object_list[2]; |
b8e4d893 | 328 | if (obj_desc) { |
3371c19c | 329 | switch (obj_desc->common.type) { |
b8e4d893 BM |
330 | case ACPI_TYPE_LOCAL_REFERENCE: |
331 | ||
1044f1f6 BM |
332 | if (obj_desc->reference.class != |
333 | ACPI_REFCLASS_NAME) { | |
b8e4d893 | 334 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 335 | "(PRT[%u].Source) Need name, found Reference Class 0x%X", |
b8e4d893 | 336 | index, |
1044f1f6 | 337 | obj_desc->reference.class)); |
b8e4d893 BM |
338 | return_ACPI_STATUS(AE_BAD_DATA); |
339 | } | |
340 | ||
341 | node = obj_desc->reference.node; | |
342 | ||
343 | /* Use *remaining* length of the buffer as max for pathname */ | |
344 | ||
345 | path_buffer.length = output_buffer->length - | |
346 | (u32) ((u8 *) user_prt->source - | |
347 | (u8 *) output_buffer->pointer); | |
348 | path_buffer.pointer = user_prt->source; | |
349 | ||
f5c1e1c5 | 350 | status = acpi_ns_handle_to_pathname((acpi_handle)node, &path_buffer, FALSE); |
b8e4d893 BM |
351 | |
352 | /* +1 to include null terminator */ | |
353 | ||
354 | user_prt->length += | |
4fa4616e | 355 | (u32)strlen(user_prt->source) + 1; |
b8e4d893 BM |
356 | break; |
357 | ||
358 | case ACPI_TYPE_STRING: | |
359 | ||
4fa4616e BM |
360 | strcpy(user_prt->source, |
361 | obj_desc->string.pointer); | |
b8e4d893 BM |
362 | |
363 | /* | |
364 | * Add to the Length field the length of the string | |
365 | * (add 1 for terminator) | |
366 | */ | |
367 | user_prt->length += obj_desc->string.length + 1; | |
368 | break; | |
369 | ||
370 | case ACPI_TYPE_INTEGER: | |
371 | /* | |
1fad8738 BM |
372 | * If this is a number, then the Source Name is NULL, since |
373 | * the entire buffer was zeroed out, we can leave this alone. | |
b8e4d893 BM |
374 | * |
375 | * Add to the Length field the length of the u32 NULL | |
376 | */ | |
377 | user_prt->length += sizeof(u32); | |
378 | break; | |
379 | ||
380 | default: | |
381 | ||
382 | ACPI_ERROR((AE_INFO, | |
f6a22b0b | 383 | "(PRT[%u].Source) Need Ref/String/Integer, found %s", |
b8e4d893 BM |
384 | index, |
385 | acpi_ut_get_object_type_name | |
386 | (obj_desc))); | |
4be44fcd | 387 | return_ACPI_STATUS(AE_BAD_DATA); |
1da177e4 | 388 | } |
1da177e4 LT |
389 | } |
390 | ||
391 | /* Now align the current length */ | |
392 | ||
4be44fcd | 393 | user_prt->length = |
958dd242 | 394 | (u32) ACPI_ROUND_UP_TO_64BIT(user_prt->length); |
1da177e4 | 395 | |
44f6c012 RM |
396 | /* 4) Fourth subobject: Dereference the PRT.source_index */ |
397 | ||
82babbb3 | 398 | obj_desc = sub_object_list[3]; |
83130649 | 399 | if (!obj_desc || obj_desc->common.type != ACPI_TYPE_INTEGER) { |
b8e4d893 | 400 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 401 | "(PRT[%u].SourceIndex) Need Integer, found %s", |
b8e4d893 BM |
402 | index, |
403 | acpi_ut_get_object_type_name(obj_desc))); | |
4be44fcd | 404 | return_ACPI_STATUS(AE_BAD_DATA); |
1da177e4 LT |
405 | } |
406 | ||
fd0a4327 BM |
407 | user_prt->source_index = (u32) obj_desc->integer.value; |
408 | ||
1da177e4 LT |
409 | /* Point to the next union acpi_operand_object in the top level package */ |
410 | ||
411 | top_object_list++; | |
412 | } | |
413 | ||
b229cf92 | 414 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
4be44fcd LB |
415 | output_buffer->pointer, (u32) output_buffer->length)); |
416 | return_ACPI_STATUS(AE_OK); | |
1da177e4 LT |
417 | } |
418 | ||
1da177e4 LT |
419 | /******************************************************************************* |
420 | * | |
50eca3eb | 421 | * FUNCTION: acpi_rs_create_aml_resources |
1da177e4 | 422 | * |
9a0a3597 LZ |
423 | * PARAMETERS: resource_list - Pointer to the resource list buffer |
424 | * output_buffer - Where the AML buffer is returned | |
1da177e4 LT |
425 | * |
426 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. | |
427 | * If the output_buffer is too small, the error will be | |
428 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point | |
429 | * to the size buffer needed. | |
430 | * | |
9a0a3597 LZ |
431 | * DESCRIPTION: Converts a list of device resources to an AML bytestream |
432 | * to be used as input for the _SRS control method. | |
1da177e4 LT |
433 | * |
434 | ******************************************************************************/ | |
435 | ||
436 | acpi_status | |
9a0a3597 | 437 | acpi_rs_create_aml_resources(struct acpi_buffer *resource_list, |
50eca3eb | 438 | struct acpi_buffer *output_buffer) |
1da177e4 | 439 | { |
4be44fcd | 440 | acpi_status status; |
50eca3eb | 441 | acpi_size aml_size_needed = 0; |
1da177e4 | 442 | |
b229cf92 | 443 | ACPI_FUNCTION_TRACE(rs_create_aml_resources); |
1da177e4 | 444 | |
9a0a3597 | 445 | /* Params already validated, no need to re-validate here */ |
1da177e4 | 446 | |
9a0a3597 LZ |
447 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "ResourceList Buffer = %p\n", |
448 | resource_list->pointer)); | |
449 | ||
450 | /* Get the buffer size needed for the AML byte stream */ | |
451 | ||
1fad8738 BM |
452 | status = |
453 | acpi_rs_get_aml_length(resource_list->pointer, | |
454 | resource_list->length, &aml_size_needed); | |
4be44fcd | 455 | |
b229cf92 | 456 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n", |
3e8214e5 | 457 | (u32)aml_size_needed, acpi_format_exception(status))); |
4be44fcd LB |
458 | if (ACPI_FAILURE(status)) { |
459 | return_ACPI_STATUS(status); | |
1da177e4 LT |
460 | } |
461 | ||
462 | /* Validate/Allocate/Clear caller buffer */ | |
463 | ||
50eca3eb | 464 | status = acpi_ut_initialize_buffer(output_buffer, aml_size_needed); |
4be44fcd LB |
465 | if (ACPI_FAILURE(status)) { |
466 | return_ACPI_STATUS(status); | |
1da177e4 LT |
467 | } |
468 | ||
469 | /* Do the conversion */ | |
470 | ||
9a0a3597 LZ |
471 | status = acpi_rs_convert_resources_to_aml(resource_list->pointer, |
472 | aml_size_needed, | |
473 | output_buffer->pointer); | |
4be44fcd LB |
474 | if (ACPI_FAILURE(status)) { |
475 | return_ACPI_STATUS(status); | |
1da177e4 LT |
476 | } |
477 | ||
b229cf92 | 478 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
4be44fcd LB |
479 | output_buffer->pointer, (u32) output_buffer->length)); |
480 | return_ACPI_STATUS(AE_OK); | |
1da177e4 | 481 | } |