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1da177e4 LT |
1 | /******************************************************************************* |
2 | * | |
3 | * Module Name: rsutils - Utilities for the resource manager | |
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 "acnamesp.h" | |
47 | #include "acresrc.h" | |
1da177e4 | 48 | |
1da177e4 | 49 | #define _COMPONENT ACPI_RESOURCES |
4be44fcd | 50 | ACPI_MODULE_NAME("rsutils") |
1da177e4 | 51 | |
0897831b BM |
52 | /******************************************************************************* |
53 | * | |
54 | * FUNCTION: acpi_rs_decode_bitmask | |
55 | * | |
ba494bee BM |
56 | * PARAMETERS: mask - Bitmask to decode |
57 | * list - Where the converted list is returned | |
0897831b BM |
58 | * |
59 | * RETURN: Count of bits set (length of list) | |
60 | * | |
61 | * DESCRIPTION: Convert a bit mask into a list of values | |
62 | * | |
63 | ******************************************************************************/ | |
64 | u8 acpi_rs_decode_bitmask(u16 mask, u8 * list) | |
65 | { | |
67a119f9 | 66 | u8 i; |
0897831b BM |
67 | u8 bit_count; |
68 | ||
96db255c BM |
69 | ACPI_FUNCTION_ENTRY(); |
70 | ||
0897831b BM |
71 | /* Decode the mask bits */ |
72 | ||
73 | for (i = 0, bit_count = 0; mask; i++) { | |
74 | if (mask & 0x0001) { | |
67a119f9 | 75 | list[bit_count] = i; |
0897831b BM |
76 | bit_count++; |
77 | } | |
78 | ||
79 | mask >>= 1; | |
80 | } | |
81 | ||
82 | return (bit_count); | |
83 | } | |
84 | ||
85 | /******************************************************************************* | |
86 | * | |
87 | * FUNCTION: acpi_rs_encode_bitmask | |
88 | * | |
ba494bee BM |
89 | * PARAMETERS: list - List of values to encode |
90 | * count - Length of list | |
0897831b BM |
91 | * |
92 | * RETURN: Encoded bitmask | |
93 | * | |
94 | * DESCRIPTION: Convert a list of values to an encoded bitmask | |
95 | * | |
96 | ******************************************************************************/ | |
97 | ||
98 | u16 acpi_rs_encode_bitmask(u8 * list, u8 count) | |
99 | { | |
67a119f9 BM |
100 | u32 i; |
101 | u16 mask; | |
0897831b | 102 | |
96db255c BM |
103 | ACPI_FUNCTION_ENTRY(); |
104 | ||
0897831b BM |
105 | /* Encode the list into a single bitmask */ |
106 | ||
107 | for (i = 0, mask = 0; i < count; i++) { | |
1d18c058 | 108 | mask |= (0x1 << list[i]); |
0897831b BM |
109 | } |
110 | ||
9c0d7939 | 111 | return (mask); |
0897831b BM |
112 | } |
113 | ||
50eca3eb BM |
114 | /******************************************************************************* |
115 | * | |
116 | * FUNCTION: acpi_rs_move_data | |
117 | * | |
ba494bee BM |
118 | * PARAMETERS: destination - Pointer to the destination descriptor |
119 | * source - Pointer to the source descriptor | |
50eca3eb BM |
120 | * item_count - How many items to move |
121 | * move_type - Byte width | |
122 | * | |
123 | * RETURN: None | |
124 | * | |
125 | * DESCRIPTION: Move multiple data items from one descriptor to another. Handles | |
126 | * alignment issues and endian issues if necessary, as configured | |
127 | * via the ACPI_MOVE_* macros. (This is why a memcpy is not used) | |
128 | * | |
129 | ******************************************************************************/ | |
0897831b | 130 | |
50eca3eb BM |
131 | void |
132 | acpi_rs_move_data(void *destination, void *source, u16 item_count, u8 move_type) | |
133 | { | |
67a119f9 | 134 | u32 i; |
50eca3eb | 135 | |
96db255c BM |
136 | ACPI_FUNCTION_ENTRY(); |
137 | ||
50eca3eb BM |
138 | /* One move per item */ |
139 | ||
140 | for (i = 0; i < item_count; i++) { | |
141 | switch (move_type) { | |
0897831b BM |
142 | /* |
143 | * For the 8-bit case, we can perform the move all at once | |
144 | * since there are no alignment or endian issues | |
145 | */ | |
146 | case ACPI_RSC_MOVE8: | |
e0fe0a8d LM |
147 | case ACPI_RSC_MOVE_GPIO_RES: |
148 | case ACPI_RSC_MOVE_SERIAL_VEN: | |
149 | case ACPI_RSC_MOVE_SERIAL_RES: | |
0897831b BM |
150 | ACPI_MEMCPY(destination, source, item_count); |
151 | return; | |
50eca3eb | 152 | |
0897831b BM |
153 | /* |
154 | * 16-, 32-, and 64-bit cases must use the move macros that perform | |
58f87ed0 | 155 | * endian conversion and/or accommodate hardware that cannot perform |
0897831b BM |
156 | * misaligned memory transfers |
157 | */ | |
158 | case ACPI_RSC_MOVE16: | |
e0fe0a8d | 159 | case ACPI_RSC_MOVE_GPIO_PIN: |
c51a4de8 BM |
160 | ACPI_MOVE_16_TO_16(&ACPI_CAST_PTR(u16, destination)[i], |
161 | &ACPI_CAST_PTR(u16, source)[i]); | |
50eca3eb BM |
162 | break; |
163 | ||
0897831b | 164 | case ACPI_RSC_MOVE32: |
c51a4de8 BM |
165 | ACPI_MOVE_32_TO_32(&ACPI_CAST_PTR(u32, destination)[i], |
166 | &ACPI_CAST_PTR(u32, source)[i]); | |
50eca3eb BM |
167 | break; |
168 | ||
0897831b | 169 | case ACPI_RSC_MOVE64: |
c51a4de8 BM |
170 | ACPI_MOVE_64_TO_64(&ACPI_CAST_PTR(u64, destination)[i], |
171 | &ACPI_CAST_PTR(u64, source)[i]); | |
50eca3eb BM |
172 | break; |
173 | ||
174 | default: | |
175 | return; | |
176 | } | |
177 | } | |
178 | } | |
179 | ||
50eca3eb BM |
180 | /******************************************************************************* |
181 | * | |
0897831b | 182 | * FUNCTION: acpi_rs_set_resource_length |
50eca3eb | 183 | * |
0897831b BM |
184 | * PARAMETERS: total_length - Length of the AML descriptor, including |
185 | * the header and length fields. | |
ba494bee | 186 | * aml - Pointer to the raw AML descriptor |
50eca3eb | 187 | * |
0897831b | 188 | * RETURN: None |
50eca3eb | 189 | * |
0897831b BM |
190 | * DESCRIPTION: Set the resource_length field of an AML |
191 | * resource descriptor, both Large and Small descriptors are | |
192 | * supported automatically. Note: Descriptor Type field must | |
193 | * be valid. | |
50eca3eb BM |
194 | * |
195 | ******************************************************************************/ | |
196 | ||
0897831b BM |
197 | void |
198 | acpi_rs_set_resource_length(acpi_rsdesc_size total_length, | |
199 | union aml_resource *aml) | |
50eca3eb | 200 | { |
0897831b | 201 | acpi_rs_length resource_length; |
50eca3eb BM |
202 | |
203 | ACPI_FUNCTION_ENTRY(); | |
204 | ||
96db255c | 205 | /* Length is the total descriptor length minus the header length */ |
50eca3eb | 206 | |
96db255c BM |
207 | resource_length = (acpi_rs_length) |
208 | (total_length - acpi_ut_get_resource_header_length(aml)); | |
50eca3eb | 209 | |
96db255c | 210 | /* Length is stored differently for large and small descriptors */ |
0897831b | 211 | |
96db255c | 212 | if (aml->small_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) { |
52fc0b02 | 213 | |
96db255c | 214 | /* Large descriptor -- bytes 1-2 contain the 16-bit length */ |
50eca3eb | 215 | |
0897831b BM |
216 | ACPI_MOVE_16_TO_16(&aml->large_header.resource_length, |
217 | &resource_length); | |
50eca3eb | 218 | } else { |
96db255c | 219 | /* Small descriptor -- bits 2:0 of byte 0 contain the length */ |
50eca3eb | 220 | |
0897831b | 221 | aml->small_header.descriptor_type = (u8) |
50eca3eb | 222 | |
0897831b BM |
223 | /* Clear any existing length, preserving descriptor type bits */ |
224 | ((aml->small_header. | |
225 | descriptor_type & ~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK) | |
50eca3eb | 226 | |
0897831b | 227 | | resource_length); |
50eca3eb | 228 | } |
50eca3eb BM |
229 | } |
230 | ||
231 | /******************************************************************************* | |
232 | * | |
233 | * FUNCTION: acpi_rs_set_resource_header | |
234 | * | |
235 | * PARAMETERS: descriptor_type - Byte to be inserted as the type | |
236 | * total_length - Length of the AML descriptor, including | |
237 | * the header and length fields. | |
ba494bee | 238 | * aml - Pointer to the raw AML descriptor |
50eca3eb BM |
239 | * |
240 | * RETURN: None | |
241 | * | |
242 | * DESCRIPTION: Set the descriptor_type and resource_length fields of an AML | |
243 | * resource descriptor, both Large and Small descriptors are | |
244 | * supported automatically | |
245 | * | |
246 | ******************************************************************************/ | |
247 | ||
248 | void | |
249 | acpi_rs_set_resource_header(u8 descriptor_type, | |
0897831b BM |
250 | acpi_rsdesc_size total_length, |
251 | union aml_resource *aml) | |
50eca3eb | 252 | { |
50eca3eb BM |
253 | ACPI_FUNCTION_ENTRY(); |
254 | ||
96db255c | 255 | /* Set the Resource Type */ |
50eca3eb BM |
256 | |
257 | aml->small_header.descriptor_type = descriptor_type; | |
258 | ||
0897831b | 259 | /* Set the Resource Length */ |
50eca3eb | 260 | |
0897831b | 261 | acpi_rs_set_resource_length(total_length, aml); |
50eca3eb BM |
262 | } |
263 | ||
264 | /******************************************************************************* | |
265 | * | |
266 | * FUNCTION: acpi_rs_strcpy | |
267 | * | |
ba494bee BM |
268 | * PARAMETERS: destination - Pointer to the destination string |
269 | * source - Pointer to the source string | |
50eca3eb BM |
270 | * |
271 | * RETURN: String length, including NULL terminator | |
272 | * | |
273 | * DESCRIPTION: Local string copy that returns the string length, saving a | |
274 | * strcpy followed by a strlen. | |
275 | * | |
276 | ******************************************************************************/ | |
277 | ||
278 | static u16 acpi_rs_strcpy(char *destination, char *source) | |
279 | { | |
280 | u16 i; | |
281 | ||
282 | ACPI_FUNCTION_ENTRY(); | |
283 | ||
284 | for (i = 0; source[i]; i++) { | |
285 | destination[i] = source[i]; | |
286 | } | |
287 | ||
288 | destination[i] = 0; | |
289 | ||
290 | /* Return string length including the NULL terminator */ | |
291 | ||
292 | return ((u16) (i + 1)); | |
293 | } | |
294 | ||
295 | /******************************************************************************* | |
296 | * | |
297 | * FUNCTION: acpi_rs_get_resource_source | |
298 | * | |
299 | * PARAMETERS: resource_length - Length field of the descriptor | |
300 | * minimum_length - Minimum length of the descriptor (minus | |
301 | * any optional fields) | |
302 | * resource_source - Where the resource_source is returned | |
ba494bee | 303 | * aml - Pointer to the raw AML descriptor |
50eca3eb BM |
304 | * string_ptr - (optional) where to store the actual |
305 | * resource_source string | |
306 | * | |
ea936b78 BM |
307 | * RETURN: Length of the string plus NULL terminator, rounded up to native |
308 | * word boundary | |
50eca3eb BM |
309 | * |
310 | * DESCRIPTION: Copy the optional resource_source data from a raw AML descriptor | |
311 | * to an internal resource descriptor | |
312 | * | |
313 | ******************************************************************************/ | |
314 | ||
0897831b BM |
315 | acpi_rs_length |
316 | acpi_rs_get_resource_source(acpi_rs_length resource_length, | |
317 | acpi_rs_length minimum_length, | |
50eca3eb BM |
318 | struct acpi_resource_source * resource_source, |
319 | union aml_resource * aml, char *string_ptr) | |
320 | { | |
0897831b | 321 | acpi_rsdesc_size total_length; |
50eca3eb BM |
322 | u8 *aml_resource_source; |
323 | ||
324 | ACPI_FUNCTION_ENTRY(); | |
325 | ||
326 | total_length = | |
327 | resource_length + sizeof(struct aml_resource_large_header); | |
c51a4de8 | 328 | aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length); |
50eca3eb BM |
329 | |
330 | /* | |
331 | * resource_source is present if the length of the descriptor is longer than | |
332 | * the minimum length. | |
333 | * | |
334 | * Note: Some resource descriptors will have an additional null, so | |
335 | * we add 1 to the minimum length. | |
336 | */ | |
0897831b | 337 | if (total_length > (acpi_rsdesc_size) (minimum_length + 1)) { |
52fc0b02 | 338 | |
50eca3eb BM |
339 | /* Get the resource_source_index */ |
340 | ||
341 | resource_source->index = aml_resource_source[0]; | |
342 | ||
343 | resource_source->string_ptr = string_ptr; | |
344 | if (!string_ptr) { | |
345 | /* | |
346 | * String destination pointer is not specified; Set the String | |
347 | * pointer to the end of the current resource_source structure. | |
348 | */ | |
c51a4de8 BM |
349 | resource_source->string_ptr = |
350 | ACPI_ADD_PTR(char, resource_source, | |
351 | sizeof(struct acpi_resource_source)); | |
50eca3eb BM |
352 | } |
353 | ||
0897831b | 354 | /* |
ea936b78 BM |
355 | * In order for the Resource length to be a multiple of the native |
356 | * word, calculate the length of the string (+1 for NULL terminator) | |
357 | * and expand to the next word multiple. | |
0897831b BM |
358 | * |
359 | * Zero the entire area of the buffer. | |
360 | */ | |
3e8214e5 LZ |
361 | total_length = |
362 | (u32) | |
363 | ACPI_STRLEN(ACPI_CAST_PTR(char, &aml_resource_source[1])) + | |
364 | 1; | |
ea936b78 | 365 | total_length = (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(total_length); |
52fc0b02 | 366 | |
0897831b BM |
367 | ACPI_MEMSET(resource_source->string_ptr, 0, total_length); |
368 | ||
50eca3eb BM |
369 | /* Copy the resource_source string to the destination */ |
370 | ||
371 | resource_source->string_length = | |
372 | acpi_rs_strcpy(resource_source->string_ptr, | |
52fc0b02 BM |
373 | ACPI_CAST_PTR(char, |
374 | &aml_resource_source[1])); | |
50eca3eb | 375 | |
0897831b | 376 | return ((acpi_rs_length) total_length); |
50eca3eb | 377 | } |
96db255c BM |
378 | |
379 | /* resource_source is not present */ | |
380 | ||
381 | resource_source->index = 0; | |
382 | resource_source->string_length = 0; | |
383 | resource_source->string_ptr = NULL; | |
384 | return (0); | |
50eca3eb BM |
385 | } |
386 | ||
387 | /******************************************************************************* | |
388 | * | |
389 | * FUNCTION: acpi_rs_set_resource_source | |
390 | * | |
ba494bee | 391 | * PARAMETERS: aml - Pointer to the raw AML descriptor |
50eca3eb BM |
392 | * minimum_length - Minimum length of the descriptor (minus |
393 | * any optional fields) | |
394 | * resource_source - Internal resource_source | |
395 | ||
396 | * | |
397 | * RETURN: Total length of the AML descriptor | |
398 | * | |
0897831b | 399 | * DESCRIPTION: Convert an optional resource_source from internal format to a |
50eca3eb BM |
400 | * raw AML resource descriptor |
401 | * | |
402 | ******************************************************************************/ | |
403 | ||
0897831b | 404 | acpi_rsdesc_size |
50eca3eb | 405 | acpi_rs_set_resource_source(union aml_resource * aml, |
0897831b | 406 | acpi_rs_length minimum_length, |
50eca3eb BM |
407 | struct acpi_resource_source * resource_source) |
408 | { | |
409 | u8 *aml_resource_source; | |
0897831b | 410 | acpi_rsdesc_size descriptor_length; |
50eca3eb BM |
411 | |
412 | ACPI_FUNCTION_ENTRY(); | |
413 | ||
414 | descriptor_length = minimum_length; | |
415 | ||
416 | /* Non-zero string length indicates presence of a resource_source */ | |
417 | ||
418 | if (resource_source->string_length) { | |
52fc0b02 | 419 | |
50eca3eb BM |
420 | /* Point to the end of the AML descriptor */ |
421 | ||
c51a4de8 | 422 | aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length); |
50eca3eb BM |
423 | |
424 | /* Copy the resource_source_index */ | |
425 | ||
426 | aml_resource_source[0] = (u8) resource_source->index; | |
427 | ||
428 | /* Copy the resource_source string */ | |
429 | ||
52fc0b02 | 430 | ACPI_STRCPY(ACPI_CAST_PTR(char, &aml_resource_source[1]), |
50eca3eb BM |
431 | resource_source->string_ptr); |
432 | ||
433 | /* | |
434 | * Add the length of the string (+ 1 for null terminator) to the | |
435 | * final descriptor length | |
436 | */ | |
437 | descriptor_length += | |
0897831b | 438 | ((acpi_rsdesc_size) resource_source->string_length + 1); |
50eca3eb BM |
439 | } |
440 | ||
441 | /* Return the new total length of the AML descriptor */ | |
442 | ||
443 | return (descriptor_length); | |
444 | } | |
445 | ||
1da177e4 LT |
446 | /******************************************************************************* |
447 | * | |
448 | * FUNCTION: acpi_rs_get_prt_method_data | |
449 | * | |
ba494bee | 450 | * PARAMETERS: node - Device node |
52fc0b02 BM |
451 | * ret_buffer - Pointer to a buffer structure for the |
452 | * results | |
1da177e4 LT |
453 | * |
454 | * RETURN: Status | |
455 | * | |
456 | * DESCRIPTION: This function is called to get the _PRT value of an object | |
457 | * contained in an object specified by the handle passed in | |
458 | * | |
459 | * If the function fails an appropriate status will be returned | |
460 | * and the contents of the callers buffer is undefined. | |
461 | * | |
462 | ******************************************************************************/ | |
50eca3eb | 463 | |
1da177e4 | 464 | acpi_status |
4119532c BM |
465 | acpi_rs_get_prt_method_data(struct acpi_namespace_node * node, |
466 | struct acpi_buffer * ret_buffer) | |
1da177e4 | 467 | { |
4be44fcd LB |
468 | union acpi_operand_object *obj_desc; |
469 | acpi_status status; | |
1da177e4 | 470 | |
b229cf92 | 471 | ACPI_FUNCTION_TRACE(rs_get_prt_method_data); |
1da177e4 LT |
472 | |
473 | /* Parameters guaranteed valid by caller */ | |
474 | ||
44f6c012 RM |
475 | /* Execute the method, no parameters */ |
476 | ||
4119532c | 477 | status = acpi_ut_evaluate_object(node, METHOD_NAME__PRT, |
4be44fcd LB |
478 | ACPI_BTYPE_PACKAGE, &obj_desc); |
479 | if (ACPI_FAILURE(status)) { | |
480 | return_ACPI_STATUS(status); | |
1da177e4 LT |
481 | } |
482 | ||
483 | /* | |
484 | * Create a resource linked list from the byte stream buffer that comes | |
485 | * back from the _CRS method execution. | |
486 | */ | |
4be44fcd | 487 | status = acpi_rs_create_pci_routing_table(obj_desc, ret_buffer); |
1da177e4 LT |
488 | |
489 | /* On exit, we must delete the object returned by evaluate_object */ | |
490 | ||
4be44fcd LB |
491 | acpi_ut_remove_reference(obj_desc); |
492 | return_ACPI_STATUS(status); | |
1da177e4 LT |
493 | } |
494 | ||
1da177e4 LT |
495 | /******************************************************************************* |
496 | * | |
497 | * FUNCTION: acpi_rs_get_crs_method_data | |
498 | * | |
ba494bee | 499 | * PARAMETERS: node - Device node |
52fc0b02 BM |
500 | * ret_buffer - Pointer to a buffer structure for the |
501 | * results | |
1da177e4 LT |
502 | * |
503 | * RETURN: Status | |
504 | * | |
505 | * DESCRIPTION: This function is called to get the _CRS value of an object | |
506 | * contained in an object specified by the handle passed in | |
507 | * | |
508 | * If the function fails an appropriate status will be returned | |
509 | * and the contents of the callers buffer is undefined. | |
510 | * | |
511 | ******************************************************************************/ | |
512 | ||
513 | acpi_status | |
4119532c BM |
514 | acpi_rs_get_crs_method_data(struct acpi_namespace_node *node, |
515 | struct acpi_buffer *ret_buffer) | |
1da177e4 | 516 | { |
4be44fcd LB |
517 | union acpi_operand_object *obj_desc; |
518 | acpi_status status; | |
1da177e4 | 519 | |
b229cf92 | 520 | ACPI_FUNCTION_TRACE(rs_get_crs_method_data); |
1da177e4 LT |
521 | |
522 | /* Parameters guaranteed valid by caller */ | |
523 | ||
44f6c012 RM |
524 | /* Execute the method, no parameters */ |
525 | ||
4119532c | 526 | status = acpi_ut_evaluate_object(node, METHOD_NAME__CRS, |
4be44fcd LB |
527 | ACPI_BTYPE_BUFFER, &obj_desc); |
528 | if (ACPI_FAILURE(status)) { | |
529 | return_ACPI_STATUS(status); | |
1da177e4 LT |
530 | } |
531 | ||
532 | /* | |
533 | * Make the call to create a resource linked list from the | |
534 | * byte stream buffer that comes back from the _CRS method | |
535 | * execution. | |
536 | */ | |
4be44fcd | 537 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
1da177e4 | 538 | |
ba494bee | 539 | /* On exit, we must delete the object returned by evaluateObject */ |
1da177e4 | 540 | |
4be44fcd LB |
541 | acpi_ut_remove_reference(obj_desc); |
542 | return_ACPI_STATUS(status); | |
1da177e4 LT |
543 | } |
544 | ||
1da177e4 LT |
545 | /******************************************************************************* |
546 | * | |
547 | * FUNCTION: acpi_rs_get_prs_method_data | |
548 | * | |
ba494bee | 549 | * PARAMETERS: node - Device node |
52fc0b02 BM |
550 | * ret_buffer - Pointer to a buffer structure for the |
551 | * results | |
1da177e4 LT |
552 | * |
553 | * RETURN: Status | |
554 | * | |
555 | * DESCRIPTION: This function is called to get the _PRS value of an object | |
556 | * contained in an object specified by the handle passed in | |
557 | * | |
558 | * If the function fails an appropriate status will be returned | |
559 | * and the contents of the callers buffer is undefined. | |
560 | * | |
561 | ******************************************************************************/ | |
44f6c012 | 562 | |
1da177e4 LT |
563 | #ifdef ACPI_FUTURE_USAGE |
564 | acpi_status | |
4119532c BM |
565 | acpi_rs_get_prs_method_data(struct acpi_namespace_node *node, |
566 | struct acpi_buffer *ret_buffer) | |
1da177e4 | 567 | { |
4be44fcd LB |
568 | union acpi_operand_object *obj_desc; |
569 | acpi_status status; | |
1da177e4 | 570 | |
b229cf92 | 571 | ACPI_FUNCTION_TRACE(rs_get_prs_method_data); |
1da177e4 LT |
572 | |
573 | /* Parameters guaranteed valid by caller */ | |
574 | ||
44f6c012 RM |
575 | /* Execute the method, no parameters */ |
576 | ||
4119532c | 577 | status = acpi_ut_evaluate_object(node, METHOD_NAME__PRS, |
4be44fcd LB |
578 | ACPI_BTYPE_BUFFER, &obj_desc); |
579 | if (ACPI_FAILURE(status)) { | |
580 | return_ACPI_STATUS(status); | |
1da177e4 LT |
581 | } |
582 | ||
583 | /* | |
584 | * Make the call to create a resource linked list from the | |
585 | * byte stream buffer that comes back from the _CRS method | |
586 | * execution. | |
587 | */ | |
4be44fcd | 588 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
1da177e4 | 589 | |
ba494bee | 590 | /* On exit, we must delete the object returned by evaluateObject */ |
1da177e4 | 591 | |
4be44fcd LB |
592 | acpi_ut_remove_reference(obj_desc); |
593 | return_ACPI_STATUS(status); | |
1da177e4 | 594 | } |
4be44fcd | 595 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 596 | |
a91cdde2 BM |
597 | /******************************************************************************* |
598 | * | |
599 | * FUNCTION: acpi_rs_get_aei_method_data | |
600 | * | |
ba494bee | 601 | * PARAMETERS: node - Device node |
a91cdde2 BM |
602 | * ret_buffer - Pointer to a buffer structure for the |
603 | * results | |
604 | * | |
605 | * RETURN: Status | |
606 | * | |
607 | * DESCRIPTION: This function is called to get the _AEI value of an object | |
608 | * contained in an object specified by the handle passed in | |
609 | * | |
610 | * If the function fails an appropriate status will be returned | |
611 | * and the contents of the callers buffer is undefined. | |
612 | * | |
613 | ******************************************************************************/ | |
614 | ||
615 | acpi_status | |
616 | acpi_rs_get_aei_method_data(struct acpi_namespace_node *node, | |
617 | struct acpi_buffer *ret_buffer) | |
618 | { | |
619 | union acpi_operand_object *obj_desc; | |
620 | acpi_status status; | |
621 | ||
622 | ACPI_FUNCTION_TRACE(rs_get_aei_method_data); | |
623 | ||
624 | /* Parameters guaranteed valid by caller */ | |
625 | ||
626 | /* Execute the method, no parameters */ | |
627 | ||
628 | status = acpi_ut_evaluate_object(node, METHOD_NAME__AEI, | |
629 | ACPI_BTYPE_BUFFER, &obj_desc); | |
630 | if (ACPI_FAILURE(status)) { | |
631 | return_ACPI_STATUS(status); | |
632 | } | |
633 | ||
634 | /* | |
635 | * Make the call to create a resource linked list from the | |
636 | * byte stream buffer that comes back from the _CRS method | |
637 | * execution. | |
638 | */ | |
639 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); | |
640 | ||
ba494bee | 641 | /* On exit, we must delete the object returned by evaluateObject */ |
a91cdde2 BM |
642 | |
643 | acpi_ut_remove_reference(obj_desc); | |
644 | return_ACPI_STATUS(status); | |
645 | } | |
646 | ||
1da177e4 LT |
647 | /******************************************************************************* |
648 | * | |
649 | * FUNCTION: acpi_rs_get_method_data | |
650 | * | |
ba494bee BM |
651 | * PARAMETERS: handle - Handle to the containing object |
652 | * path - Path to method, relative to Handle | |
52fc0b02 BM |
653 | * ret_buffer - Pointer to a buffer structure for the |
654 | * results | |
1da177e4 LT |
655 | * |
656 | * RETURN: Status | |
657 | * | |
658 | * DESCRIPTION: This function is called to get the _CRS or _PRS value of an | |
659 | * object contained in an object specified by the handle passed in | |
660 | * | |
661 | * If the function fails an appropriate status will be returned | |
662 | * and the contents of the callers buffer is undefined. | |
663 | * | |
664 | ******************************************************************************/ | |
665 | ||
666 | acpi_status | |
4be44fcd LB |
667 | acpi_rs_get_method_data(acpi_handle handle, |
668 | char *path, struct acpi_buffer *ret_buffer) | |
1da177e4 | 669 | { |
4be44fcd LB |
670 | union acpi_operand_object *obj_desc; |
671 | acpi_status status; | |
1da177e4 | 672 | |
b229cf92 | 673 | ACPI_FUNCTION_TRACE(rs_get_method_data); |
1da177e4 LT |
674 | |
675 | /* Parameters guaranteed valid by caller */ | |
676 | ||
44f6c012 RM |
677 | /* Execute the method, no parameters */ |
678 | ||
4be44fcd | 679 | status = |
0fdce476 RW |
680 | acpi_ut_evaluate_object(ACPI_CAST_PTR |
681 | (struct acpi_namespace_node, handle), path, | |
682 | ACPI_BTYPE_BUFFER, &obj_desc); | |
4be44fcd LB |
683 | if (ACPI_FAILURE(status)) { |
684 | return_ACPI_STATUS(status); | |
1da177e4 LT |
685 | } |
686 | ||
687 | /* | |
688 | * Make the call to create a resource linked list from the | |
689 | * byte stream buffer that comes back from the method | |
690 | * execution. | |
691 | */ | |
4be44fcd | 692 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
1da177e4 LT |
693 | |
694 | /* On exit, we must delete the object returned by evaluate_object */ | |
695 | ||
4be44fcd LB |
696 | acpi_ut_remove_reference(obj_desc); |
697 | return_ACPI_STATUS(status); | |
1da177e4 LT |
698 | } |
699 | ||
700 | /******************************************************************************* | |
701 | * | |
702 | * FUNCTION: acpi_rs_set_srs_method_data | |
703 | * | |
ba494bee | 704 | * PARAMETERS: node - Device node |
52fc0b02 BM |
705 | * in_buffer - Pointer to a buffer structure of the |
706 | * parameter | |
1da177e4 LT |
707 | * |
708 | * RETURN: Status | |
709 | * | |
710 | * DESCRIPTION: This function is called to set the _SRS of an object contained | |
711 | * in an object specified by the handle passed in | |
712 | * | |
713 | * If the function fails an appropriate status will be returned | |
714 | * and the contents of the callers buffer is undefined. | |
715 | * | |
4119532c BM |
716 | * Note: Parameters guaranteed valid by caller |
717 | * | |
1da177e4 LT |
718 | ******************************************************************************/ |
719 | ||
720 | acpi_status | |
4119532c BM |
721 | acpi_rs_set_srs_method_data(struct acpi_namespace_node *node, |
722 | struct acpi_buffer *in_buffer) | |
1da177e4 | 723 | { |
4119532c BM |
724 | struct acpi_evaluate_info *info; |
725 | union acpi_operand_object *args[2]; | |
4be44fcd LB |
726 | acpi_status status; |
727 | struct acpi_buffer buffer; | |
1da177e4 | 728 | |
b229cf92 | 729 | ACPI_FUNCTION_TRACE(rs_set_srs_method_data); |
1da177e4 | 730 | |
4119532c BM |
731 | /* Allocate and initialize the evaluation information block */ |
732 | ||
733 | info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info)); | |
734 | if (!info) { | |
735 | return_ACPI_STATUS(AE_NO_MEMORY); | |
736 | } | |
737 | ||
738 | info->prefix_node = node; | |
739 | info->pathname = METHOD_NAME__SRS; | |
740 | info->parameters = args; | |
4119532c | 741 | info->flags = ACPI_IGNORE_RETURN_VALUE; |
1da177e4 LT |
742 | |
743 | /* | |
744 | * The in_buffer parameter will point to a linked list of | |
4119532c | 745 | * resource parameters. It needs to be formatted into a |
1da177e4 LT |
746 | * byte stream to be sent in as an input parameter to _SRS |
747 | * | |
748 | * Convert the linked list into a byte stream | |
749 | */ | |
750 | buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; | |
50eca3eb | 751 | status = acpi_rs_create_aml_resources(in_buffer->pointer, &buffer); |
4be44fcd | 752 | if (ACPI_FAILURE(status)) { |
4119532c | 753 | goto cleanup; |
1da177e4 LT |
754 | } |
755 | ||
4119532c | 756 | /* Create and initialize the method parameter object */ |
44f6c012 | 757 | |
4119532c BM |
758 | args[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER); |
759 | if (!args[0]) { | |
760 | /* | |
761 | * Must free the buffer allocated above (otherwise it is freed | |
762 | * later) | |
763 | */ | |
764 | ACPI_FREE(buffer.pointer); | |
765 | status = AE_NO_MEMORY; | |
766 | goto cleanup; | |
1da177e4 LT |
767 | } |
768 | ||
4119532c BM |
769 | args[0]->buffer.length = (u32) buffer.length; |
770 | args[0]->buffer.pointer = buffer.pointer; | |
771 | args[0]->common.flags = AOPOBJ_DATA_VALID; | |
772 | args[1] = NULL; | |
1da177e4 | 773 | |
4119532c | 774 | /* Execute the method, no return value is expected */ |
1da177e4 | 775 | |
4119532c | 776 | status = acpi_ns_evaluate(info); |
44f6c012 | 777 | |
4119532c | 778 | /* Clean up and return the status from acpi_ns_evaluate */ |
1da177e4 | 779 | |
4119532c | 780 | acpi_ut_remove_reference(args[0]); |
44f6c012 | 781 | |
4119532c BM |
782 | cleanup: |
783 | ACPI_FREE(info); | |
4be44fcd | 784 | return_ACPI_STATUS(status); |
1da177e4 | 785 | } |