Commit | Line | Data |
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1da177e4 LT |
1 | /******************************************************************************* |
2 | * | |
3 | * Module Name: rsutils - Utilities for the resource manager | |
4 | * | |
5 | ******************************************************************************/ | |
6 | ||
7 | /* | |
77848130 | 8 | * Copyright (C) 2000 - 2012, 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 | ||
67a119f9 | 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 | */ | |
fd350943 LB |
361 | total_length = (u32) |
362 | ACPI_STRLEN(ACPI_CAST_PTR(char, &aml_resource_source[1])) + 1; | |
ea936b78 | 363 | total_length = (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(total_length); |
52fc0b02 | 364 | |
0897831b BM |
365 | ACPI_MEMSET(resource_source->string_ptr, 0, total_length); |
366 | ||
50eca3eb BM |
367 | /* Copy the resource_source string to the destination */ |
368 | ||
369 | resource_source->string_length = | |
370 | acpi_rs_strcpy(resource_source->string_ptr, | |
52fc0b02 BM |
371 | ACPI_CAST_PTR(char, |
372 | &aml_resource_source[1])); | |
50eca3eb | 373 | |
0897831b | 374 | return ((acpi_rs_length) total_length); |
50eca3eb | 375 | } |
96db255c BM |
376 | |
377 | /* resource_source is not present */ | |
378 | ||
379 | resource_source->index = 0; | |
380 | resource_source->string_length = 0; | |
381 | resource_source->string_ptr = NULL; | |
382 | return (0); | |
50eca3eb BM |
383 | } |
384 | ||
385 | /******************************************************************************* | |
386 | * | |
387 | * FUNCTION: acpi_rs_set_resource_source | |
388 | * | |
ba494bee | 389 | * PARAMETERS: aml - Pointer to the raw AML descriptor |
50eca3eb BM |
390 | * minimum_length - Minimum length of the descriptor (minus |
391 | * any optional fields) | |
392 | * resource_source - Internal resource_source | |
393 | ||
394 | * | |
395 | * RETURN: Total length of the AML descriptor | |
396 | * | |
0897831b | 397 | * DESCRIPTION: Convert an optional resource_source from internal format to a |
50eca3eb BM |
398 | * raw AML resource descriptor |
399 | * | |
400 | ******************************************************************************/ | |
401 | ||
0897831b | 402 | acpi_rsdesc_size |
50eca3eb | 403 | acpi_rs_set_resource_source(union aml_resource * aml, |
0897831b | 404 | acpi_rs_length minimum_length, |
50eca3eb BM |
405 | struct acpi_resource_source * resource_source) |
406 | { | |
407 | u8 *aml_resource_source; | |
0897831b | 408 | acpi_rsdesc_size descriptor_length; |
50eca3eb BM |
409 | |
410 | ACPI_FUNCTION_ENTRY(); | |
411 | ||
412 | descriptor_length = minimum_length; | |
413 | ||
414 | /* Non-zero string length indicates presence of a resource_source */ | |
415 | ||
416 | if (resource_source->string_length) { | |
52fc0b02 | 417 | |
50eca3eb BM |
418 | /* Point to the end of the AML descriptor */ |
419 | ||
c51a4de8 | 420 | aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length); |
50eca3eb BM |
421 | |
422 | /* Copy the resource_source_index */ | |
423 | ||
424 | aml_resource_source[0] = (u8) resource_source->index; | |
425 | ||
426 | /* Copy the resource_source string */ | |
427 | ||
52fc0b02 | 428 | ACPI_STRCPY(ACPI_CAST_PTR(char, &aml_resource_source[1]), |
50eca3eb BM |
429 | resource_source->string_ptr); |
430 | ||
431 | /* | |
432 | * Add the length of the string (+ 1 for null terminator) to the | |
433 | * final descriptor length | |
434 | */ | |
435 | descriptor_length += | |
0897831b | 436 | ((acpi_rsdesc_size) resource_source->string_length + 1); |
50eca3eb BM |
437 | } |
438 | ||
439 | /* Return the new total length of the AML descriptor */ | |
440 | ||
441 | return (descriptor_length); | |
442 | } | |
443 | ||
1da177e4 LT |
444 | /******************************************************************************* |
445 | * | |
446 | * FUNCTION: acpi_rs_get_prt_method_data | |
447 | * | |
ba494bee | 448 | * PARAMETERS: node - Device node |
52fc0b02 BM |
449 | * ret_buffer - Pointer to a buffer structure for the |
450 | * results | |
1da177e4 LT |
451 | * |
452 | * RETURN: Status | |
453 | * | |
454 | * DESCRIPTION: This function is called to get the _PRT value of an object | |
455 | * contained in an object specified by the handle passed in | |
456 | * | |
457 | * If the function fails an appropriate status will be returned | |
458 | * and the contents of the callers buffer is undefined. | |
459 | * | |
460 | ******************************************************************************/ | |
50eca3eb | 461 | |
1da177e4 | 462 | acpi_status |
4119532c BM |
463 | acpi_rs_get_prt_method_data(struct acpi_namespace_node * node, |
464 | struct acpi_buffer * ret_buffer) | |
1da177e4 | 465 | { |
4be44fcd LB |
466 | union acpi_operand_object *obj_desc; |
467 | acpi_status status; | |
1da177e4 | 468 | |
b229cf92 | 469 | ACPI_FUNCTION_TRACE(rs_get_prt_method_data); |
1da177e4 LT |
470 | |
471 | /* Parameters guaranteed valid by caller */ | |
472 | ||
44f6c012 RM |
473 | /* Execute the method, no parameters */ |
474 | ||
4119532c | 475 | status = acpi_ut_evaluate_object(node, METHOD_NAME__PRT, |
4be44fcd LB |
476 | ACPI_BTYPE_PACKAGE, &obj_desc); |
477 | if (ACPI_FAILURE(status)) { | |
478 | return_ACPI_STATUS(status); | |
1da177e4 LT |
479 | } |
480 | ||
481 | /* | |
482 | * Create a resource linked list from the byte stream buffer that comes | |
483 | * back from the _CRS method execution. | |
484 | */ | |
4be44fcd | 485 | status = acpi_rs_create_pci_routing_table(obj_desc, ret_buffer); |
1da177e4 LT |
486 | |
487 | /* On exit, we must delete the object returned by evaluate_object */ | |
488 | ||
4be44fcd LB |
489 | acpi_ut_remove_reference(obj_desc); |
490 | return_ACPI_STATUS(status); | |
1da177e4 LT |
491 | } |
492 | ||
1da177e4 LT |
493 | /******************************************************************************* |
494 | * | |
495 | * FUNCTION: acpi_rs_get_crs_method_data | |
496 | * | |
ba494bee | 497 | * PARAMETERS: node - Device node |
52fc0b02 BM |
498 | * ret_buffer - Pointer to a buffer structure for the |
499 | * results | |
1da177e4 LT |
500 | * |
501 | * RETURN: Status | |
502 | * | |
503 | * DESCRIPTION: This function is called to get the _CRS value of an object | |
504 | * contained in an object specified by the handle passed in | |
505 | * | |
506 | * If the function fails an appropriate status will be returned | |
507 | * and the contents of the callers buffer is undefined. | |
508 | * | |
509 | ******************************************************************************/ | |
510 | ||
511 | acpi_status | |
4119532c BM |
512 | acpi_rs_get_crs_method_data(struct acpi_namespace_node *node, |
513 | struct acpi_buffer *ret_buffer) | |
1da177e4 | 514 | { |
4be44fcd LB |
515 | union acpi_operand_object *obj_desc; |
516 | acpi_status status; | |
1da177e4 | 517 | |
b229cf92 | 518 | ACPI_FUNCTION_TRACE(rs_get_crs_method_data); |
1da177e4 LT |
519 | |
520 | /* Parameters guaranteed valid by caller */ | |
521 | ||
44f6c012 RM |
522 | /* Execute the method, no parameters */ |
523 | ||
4119532c | 524 | status = acpi_ut_evaluate_object(node, METHOD_NAME__CRS, |
4be44fcd LB |
525 | ACPI_BTYPE_BUFFER, &obj_desc); |
526 | if (ACPI_FAILURE(status)) { | |
527 | return_ACPI_STATUS(status); | |
1da177e4 LT |
528 | } |
529 | ||
530 | /* | |
531 | * Make the call to create a resource linked list from the | |
532 | * byte stream buffer that comes back from the _CRS method | |
533 | * execution. | |
534 | */ | |
4be44fcd | 535 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
1da177e4 | 536 | |
ba494bee | 537 | /* On exit, we must delete the object returned by evaluateObject */ |
1da177e4 | 538 | |
4be44fcd LB |
539 | acpi_ut_remove_reference(obj_desc); |
540 | return_ACPI_STATUS(status); | |
1da177e4 LT |
541 | } |
542 | ||
1da177e4 LT |
543 | /******************************************************************************* |
544 | * | |
545 | * FUNCTION: acpi_rs_get_prs_method_data | |
546 | * | |
ba494bee | 547 | * PARAMETERS: node - Device node |
52fc0b02 BM |
548 | * ret_buffer - Pointer to a buffer structure for the |
549 | * results | |
1da177e4 LT |
550 | * |
551 | * RETURN: Status | |
552 | * | |
553 | * DESCRIPTION: This function is called to get the _PRS value of an object | |
554 | * contained in an object specified by the handle passed in | |
555 | * | |
556 | * If the function fails an appropriate status will be returned | |
557 | * and the contents of the callers buffer is undefined. | |
558 | * | |
559 | ******************************************************************************/ | |
44f6c012 | 560 | |
1da177e4 LT |
561 | #ifdef ACPI_FUTURE_USAGE |
562 | acpi_status | |
4119532c BM |
563 | acpi_rs_get_prs_method_data(struct acpi_namespace_node *node, |
564 | struct acpi_buffer *ret_buffer) | |
1da177e4 | 565 | { |
4be44fcd LB |
566 | union acpi_operand_object *obj_desc; |
567 | acpi_status status; | |
1da177e4 | 568 | |
b229cf92 | 569 | ACPI_FUNCTION_TRACE(rs_get_prs_method_data); |
1da177e4 LT |
570 | |
571 | /* Parameters guaranteed valid by caller */ | |
572 | ||
44f6c012 RM |
573 | /* Execute the method, no parameters */ |
574 | ||
4119532c | 575 | status = acpi_ut_evaluate_object(node, METHOD_NAME__PRS, |
4be44fcd LB |
576 | ACPI_BTYPE_BUFFER, &obj_desc); |
577 | if (ACPI_FAILURE(status)) { | |
578 | return_ACPI_STATUS(status); | |
1da177e4 LT |
579 | } |
580 | ||
581 | /* | |
582 | * Make the call to create a resource linked list from the | |
583 | * byte stream buffer that comes back from the _CRS method | |
584 | * execution. | |
585 | */ | |
4be44fcd | 586 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
1da177e4 | 587 | |
ba494bee | 588 | /* On exit, we must delete the object returned by evaluateObject */ |
1da177e4 | 589 | |
4be44fcd LB |
590 | acpi_ut_remove_reference(obj_desc); |
591 | return_ACPI_STATUS(status); | |
1da177e4 | 592 | } |
4be44fcd | 593 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 594 | |
a91cdde2 BM |
595 | /******************************************************************************* |
596 | * | |
597 | * FUNCTION: acpi_rs_get_aei_method_data | |
598 | * | |
ba494bee | 599 | * PARAMETERS: node - Device node |
a91cdde2 BM |
600 | * ret_buffer - Pointer to a buffer structure for the |
601 | * results | |
602 | * | |
603 | * RETURN: Status | |
604 | * | |
605 | * DESCRIPTION: This function is called to get the _AEI value of an object | |
606 | * contained in an object specified by the handle passed in | |
607 | * | |
608 | * If the function fails an appropriate status will be returned | |
609 | * and the contents of the callers buffer is undefined. | |
610 | * | |
611 | ******************************************************************************/ | |
612 | ||
613 | acpi_status | |
614 | acpi_rs_get_aei_method_data(struct acpi_namespace_node *node, | |
615 | struct acpi_buffer *ret_buffer) | |
616 | { | |
617 | union acpi_operand_object *obj_desc; | |
618 | acpi_status status; | |
619 | ||
620 | ACPI_FUNCTION_TRACE(rs_get_aei_method_data); | |
621 | ||
622 | /* Parameters guaranteed valid by caller */ | |
623 | ||
624 | /* Execute the method, no parameters */ | |
625 | ||
626 | status = acpi_ut_evaluate_object(node, METHOD_NAME__AEI, | |
627 | ACPI_BTYPE_BUFFER, &obj_desc); | |
628 | if (ACPI_FAILURE(status)) { | |
629 | return_ACPI_STATUS(status); | |
630 | } | |
631 | ||
632 | /* | |
633 | * Make the call to create a resource linked list from the | |
634 | * byte stream buffer that comes back from the _CRS method | |
635 | * execution. | |
636 | */ | |
637 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); | |
638 | ||
ba494bee | 639 | /* On exit, we must delete the object returned by evaluateObject */ |
a91cdde2 BM |
640 | |
641 | acpi_ut_remove_reference(obj_desc); | |
642 | return_ACPI_STATUS(status); | |
643 | } | |
644 | ||
1da177e4 LT |
645 | /******************************************************************************* |
646 | * | |
647 | * FUNCTION: acpi_rs_get_method_data | |
648 | * | |
ba494bee BM |
649 | * PARAMETERS: handle - Handle to the containing object |
650 | * path - Path to method, relative to Handle | |
52fc0b02 BM |
651 | * ret_buffer - Pointer to a buffer structure for the |
652 | * results | |
1da177e4 LT |
653 | * |
654 | * RETURN: Status | |
655 | * | |
656 | * DESCRIPTION: This function is called to get the _CRS or _PRS value of an | |
657 | * object contained in an object specified by the handle passed in | |
658 | * | |
659 | * If the function fails an appropriate status will be returned | |
660 | * and the contents of the callers buffer is undefined. | |
661 | * | |
662 | ******************************************************************************/ | |
663 | ||
664 | acpi_status | |
4be44fcd LB |
665 | acpi_rs_get_method_data(acpi_handle handle, |
666 | char *path, struct acpi_buffer *ret_buffer) | |
1da177e4 | 667 | { |
4be44fcd LB |
668 | union acpi_operand_object *obj_desc; |
669 | acpi_status status; | |
1da177e4 | 670 | |
b229cf92 | 671 | ACPI_FUNCTION_TRACE(rs_get_method_data); |
1da177e4 LT |
672 | |
673 | /* Parameters guaranteed valid by caller */ | |
674 | ||
44f6c012 RM |
675 | /* Execute the method, no parameters */ |
676 | ||
4be44fcd LB |
677 | status = |
678 | acpi_ut_evaluate_object(handle, path, ACPI_BTYPE_BUFFER, &obj_desc); | |
679 | if (ACPI_FAILURE(status)) { | |
680 | return_ACPI_STATUS(status); | |
1da177e4 LT |
681 | } |
682 | ||
683 | /* | |
684 | * Make the call to create a resource linked list from the | |
685 | * byte stream buffer that comes back from the method | |
686 | * execution. | |
687 | */ | |
4be44fcd | 688 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
1da177e4 LT |
689 | |
690 | /* On exit, we must delete the object returned by evaluate_object */ | |
691 | ||
4be44fcd LB |
692 | acpi_ut_remove_reference(obj_desc); |
693 | return_ACPI_STATUS(status); | |
1da177e4 LT |
694 | } |
695 | ||
696 | /******************************************************************************* | |
697 | * | |
698 | * FUNCTION: acpi_rs_set_srs_method_data | |
699 | * | |
ba494bee | 700 | * PARAMETERS: node - Device node |
52fc0b02 BM |
701 | * in_buffer - Pointer to a buffer structure of the |
702 | * parameter | |
1da177e4 LT |
703 | * |
704 | * RETURN: Status | |
705 | * | |
706 | * DESCRIPTION: This function is called to set the _SRS of an object contained | |
707 | * in an object specified by the handle passed in | |
708 | * | |
709 | * If the function fails an appropriate status will be returned | |
710 | * and the contents of the callers buffer is undefined. | |
711 | * | |
4119532c BM |
712 | * Note: Parameters guaranteed valid by caller |
713 | * | |
1da177e4 LT |
714 | ******************************************************************************/ |
715 | ||
716 | acpi_status | |
4119532c BM |
717 | acpi_rs_set_srs_method_data(struct acpi_namespace_node *node, |
718 | struct acpi_buffer *in_buffer) | |
1da177e4 | 719 | { |
4119532c BM |
720 | struct acpi_evaluate_info *info; |
721 | union acpi_operand_object *args[2]; | |
4be44fcd LB |
722 | acpi_status status; |
723 | struct acpi_buffer buffer; | |
1da177e4 | 724 | |
b229cf92 | 725 | ACPI_FUNCTION_TRACE(rs_set_srs_method_data); |
1da177e4 | 726 | |
4119532c BM |
727 | /* Allocate and initialize the evaluation information block */ |
728 | ||
729 | info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info)); | |
730 | if (!info) { | |
731 | return_ACPI_STATUS(AE_NO_MEMORY); | |
732 | } | |
733 | ||
734 | info->prefix_node = node; | |
735 | info->pathname = METHOD_NAME__SRS; | |
736 | info->parameters = args; | |
4119532c | 737 | info->flags = ACPI_IGNORE_RETURN_VALUE; |
1da177e4 LT |
738 | |
739 | /* | |
740 | * The in_buffer parameter will point to a linked list of | |
4119532c | 741 | * resource parameters. It needs to be formatted into a |
1da177e4 LT |
742 | * byte stream to be sent in as an input parameter to _SRS |
743 | * | |
744 | * Convert the linked list into a byte stream | |
745 | */ | |
746 | buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; | |
50eca3eb | 747 | status = acpi_rs_create_aml_resources(in_buffer->pointer, &buffer); |
4be44fcd | 748 | if (ACPI_FAILURE(status)) { |
4119532c | 749 | goto cleanup; |
1da177e4 LT |
750 | } |
751 | ||
4119532c | 752 | /* Create and initialize the method parameter object */ |
44f6c012 | 753 | |
4119532c BM |
754 | args[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER); |
755 | if (!args[0]) { | |
756 | /* | |
757 | * Must free the buffer allocated above (otherwise it is freed | |
758 | * later) | |
759 | */ | |
760 | ACPI_FREE(buffer.pointer); | |
761 | status = AE_NO_MEMORY; | |
762 | goto cleanup; | |
1da177e4 LT |
763 | } |
764 | ||
4119532c BM |
765 | args[0]->buffer.length = (u32) buffer.length; |
766 | args[0]->buffer.pointer = buffer.pointer; | |
767 | args[0]->common.flags = AOPOBJ_DATA_VALID; | |
768 | args[1] = NULL; | |
1da177e4 | 769 | |
4119532c | 770 | /* Execute the method, no return value is expected */ |
1da177e4 | 771 | |
4119532c | 772 | status = acpi_ns_evaluate(info); |
44f6c012 | 773 | |
4119532c | 774 | /* Clean up and return the status from acpi_ns_evaluate */ |
1da177e4 | 775 | |
4119532c | 776 | acpi_ut_remove_reference(args[0]); |
44f6c012 | 777 | |
4119532c BM |
778 | cleanup: |
779 | ACPI_FREE(info); | |
4be44fcd | 780 | return_ACPI_STATUS(status); |
1da177e4 | 781 | } |