Commit | Line | Data |
---|---|---|
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: | |
1d1ea1b7 | 150 | |
0897831b BM |
151 | ACPI_MEMCPY(destination, source, item_count); |
152 | return; | |
50eca3eb | 153 | |
0897831b BM |
154 | /* |
155 | * 16-, 32-, and 64-bit cases must use the move macros that perform | |
58f87ed0 | 156 | * endian conversion and/or accommodate hardware that cannot perform |
0897831b BM |
157 | * misaligned memory transfers |
158 | */ | |
159 | case ACPI_RSC_MOVE16: | |
e0fe0a8d | 160 | case ACPI_RSC_MOVE_GPIO_PIN: |
1d1ea1b7 | 161 | |
c51a4de8 BM |
162 | ACPI_MOVE_16_TO_16(&ACPI_CAST_PTR(u16, destination)[i], |
163 | &ACPI_CAST_PTR(u16, source)[i]); | |
50eca3eb BM |
164 | break; |
165 | ||
0897831b | 166 | case ACPI_RSC_MOVE32: |
1d1ea1b7 | 167 | |
c51a4de8 BM |
168 | ACPI_MOVE_32_TO_32(&ACPI_CAST_PTR(u32, destination)[i], |
169 | &ACPI_CAST_PTR(u32, source)[i]); | |
50eca3eb BM |
170 | break; |
171 | ||
0897831b | 172 | case ACPI_RSC_MOVE64: |
1d1ea1b7 | 173 | |
c51a4de8 BM |
174 | ACPI_MOVE_64_TO_64(&ACPI_CAST_PTR(u64, destination)[i], |
175 | &ACPI_CAST_PTR(u64, source)[i]); | |
50eca3eb BM |
176 | break; |
177 | ||
178 | default: | |
1d1ea1b7 | 179 | |
50eca3eb BM |
180 | return; |
181 | } | |
182 | } | |
183 | } | |
184 | ||
50eca3eb BM |
185 | /******************************************************************************* |
186 | * | |
0897831b | 187 | * FUNCTION: acpi_rs_set_resource_length |
50eca3eb | 188 | * |
0897831b BM |
189 | * PARAMETERS: total_length - Length of the AML descriptor, including |
190 | * the header and length fields. | |
ba494bee | 191 | * aml - Pointer to the raw AML descriptor |
50eca3eb | 192 | * |
0897831b | 193 | * RETURN: None |
50eca3eb | 194 | * |
0897831b BM |
195 | * DESCRIPTION: Set the resource_length field of an AML |
196 | * resource descriptor, both Large and Small descriptors are | |
197 | * supported automatically. Note: Descriptor Type field must | |
198 | * be valid. | |
50eca3eb BM |
199 | * |
200 | ******************************************************************************/ | |
201 | ||
0897831b BM |
202 | void |
203 | acpi_rs_set_resource_length(acpi_rsdesc_size total_length, | |
204 | union aml_resource *aml) | |
50eca3eb | 205 | { |
0897831b | 206 | acpi_rs_length resource_length; |
50eca3eb BM |
207 | |
208 | ACPI_FUNCTION_ENTRY(); | |
209 | ||
96db255c | 210 | /* Length is the total descriptor length minus the header length */ |
50eca3eb | 211 | |
96db255c BM |
212 | resource_length = (acpi_rs_length) |
213 | (total_length - acpi_ut_get_resource_header_length(aml)); | |
50eca3eb | 214 | |
96db255c | 215 | /* Length is stored differently for large and small descriptors */ |
0897831b | 216 | |
96db255c | 217 | if (aml->small_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) { |
52fc0b02 | 218 | |
96db255c | 219 | /* Large descriptor -- bytes 1-2 contain the 16-bit length */ |
50eca3eb | 220 | |
0897831b BM |
221 | ACPI_MOVE_16_TO_16(&aml->large_header.resource_length, |
222 | &resource_length); | |
50eca3eb | 223 | } else { |
96db255c | 224 | /* Small descriptor -- bits 2:0 of byte 0 contain the length */ |
50eca3eb | 225 | |
0897831b | 226 | aml->small_header.descriptor_type = (u8) |
50eca3eb | 227 | |
0897831b BM |
228 | /* Clear any existing length, preserving descriptor type bits */ |
229 | ((aml->small_header. | |
230 | descriptor_type & ~ACPI_RESOURCE_NAME_SMALL_LENGTH_MASK) | |
50eca3eb | 231 | |
0897831b | 232 | | resource_length); |
50eca3eb | 233 | } |
50eca3eb BM |
234 | } |
235 | ||
236 | /******************************************************************************* | |
237 | * | |
238 | * FUNCTION: acpi_rs_set_resource_header | |
239 | * | |
240 | * PARAMETERS: descriptor_type - Byte to be inserted as the type | |
241 | * total_length - Length of the AML descriptor, including | |
242 | * the header and length fields. | |
ba494bee | 243 | * aml - Pointer to the raw AML descriptor |
50eca3eb BM |
244 | * |
245 | * RETURN: None | |
246 | * | |
247 | * DESCRIPTION: Set the descriptor_type and resource_length fields of an AML | |
248 | * resource descriptor, both Large and Small descriptors are | |
249 | * supported automatically | |
250 | * | |
251 | ******************************************************************************/ | |
252 | ||
253 | void | |
254 | acpi_rs_set_resource_header(u8 descriptor_type, | |
0897831b BM |
255 | acpi_rsdesc_size total_length, |
256 | union aml_resource *aml) | |
50eca3eb | 257 | { |
50eca3eb BM |
258 | ACPI_FUNCTION_ENTRY(); |
259 | ||
96db255c | 260 | /* Set the Resource Type */ |
50eca3eb BM |
261 | |
262 | aml->small_header.descriptor_type = descriptor_type; | |
263 | ||
0897831b | 264 | /* Set the Resource Length */ |
50eca3eb | 265 | |
0897831b | 266 | acpi_rs_set_resource_length(total_length, aml); |
50eca3eb BM |
267 | } |
268 | ||
269 | /******************************************************************************* | |
270 | * | |
271 | * FUNCTION: acpi_rs_strcpy | |
272 | * | |
ba494bee BM |
273 | * PARAMETERS: destination - Pointer to the destination string |
274 | * source - Pointer to the source string | |
50eca3eb BM |
275 | * |
276 | * RETURN: String length, including NULL terminator | |
277 | * | |
278 | * DESCRIPTION: Local string copy that returns the string length, saving a | |
279 | * strcpy followed by a strlen. | |
280 | * | |
281 | ******************************************************************************/ | |
282 | ||
283 | static u16 acpi_rs_strcpy(char *destination, char *source) | |
284 | { | |
285 | u16 i; | |
286 | ||
287 | ACPI_FUNCTION_ENTRY(); | |
288 | ||
289 | for (i = 0; source[i]; i++) { | |
290 | destination[i] = source[i]; | |
291 | } | |
292 | ||
293 | destination[i] = 0; | |
294 | ||
295 | /* Return string length including the NULL terminator */ | |
296 | ||
297 | return ((u16) (i + 1)); | |
298 | } | |
299 | ||
300 | /******************************************************************************* | |
301 | * | |
302 | * FUNCTION: acpi_rs_get_resource_source | |
303 | * | |
304 | * PARAMETERS: resource_length - Length field of the descriptor | |
305 | * minimum_length - Minimum length of the descriptor (minus | |
306 | * any optional fields) | |
307 | * resource_source - Where the resource_source is returned | |
ba494bee | 308 | * aml - Pointer to the raw AML descriptor |
50eca3eb BM |
309 | * string_ptr - (optional) where to store the actual |
310 | * resource_source string | |
311 | * | |
ea936b78 BM |
312 | * RETURN: Length of the string plus NULL terminator, rounded up to native |
313 | * word boundary | |
50eca3eb BM |
314 | * |
315 | * DESCRIPTION: Copy the optional resource_source data from a raw AML descriptor | |
316 | * to an internal resource descriptor | |
317 | * | |
318 | ******************************************************************************/ | |
319 | ||
0897831b BM |
320 | acpi_rs_length |
321 | acpi_rs_get_resource_source(acpi_rs_length resource_length, | |
322 | acpi_rs_length minimum_length, | |
50eca3eb BM |
323 | struct acpi_resource_source * resource_source, |
324 | union aml_resource * aml, char *string_ptr) | |
325 | { | |
0897831b | 326 | acpi_rsdesc_size total_length; |
50eca3eb BM |
327 | u8 *aml_resource_source; |
328 | ||
329 | ACPI_FUNCTION_ENTRY(); | |
330 | ||
331 | total_length = | |
332 | resource_length + sizeof(struct aml_resource_large_header); | |
c51a4de8 | 333 | aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length); |
50eca3eb BM |
334 | |
335 | /* | |
336 | * resource_source is present if the length of the descriptor is longer than | |
337 | * the minimum length. | |
338 | * | |
339 | * Note: Some resource descriptors will have an additional null, so | |
340 | * we add 1 to the minimum length. | |
341 | */ | |
0897831b | 342 | if (total_length > (acpi_rsdesc_size) (minimum_length + 1)) { |
52fc0b02 | 343 | |
50eca3eb BM |
344 | /* Get the resource_source_index */ |
345 | ||
346 | resource_source->index = aml_resource_source[0]; | |
347 | ||
348 | resource_source->string_ptr = string_ptr; | |
349 | if (!string_ptr) { | |
350 | /* | |
351 | * String destination pointer is not specified; Set the String | |
352 | * pointer to the end of the current resource_source structure. | |
353 | */ | |
c51a4de8 BM |
354 | resource_source->string_ptr = |
355 | ACPI_ADD_PTR(char, resource_source, | |
356 | sizeof(struct acpi_resource_source)); | |
50eca3eb BM |
357 | } |
358 | ||
0897831b | 359 | /* |
ea936b78 BM |
360 | * In order for the Resource length to be a multiple of the native |
361 | * word, calculate the length of the string (+1 for NULL terminator) | |
362 | * and expand to the next word multiple. | |
0897831b BM |
363 | * |
364 | * Zero the entire area of the buffer. | |
365 | */ | |
3e8214e5 LZ |
366 | total_length = |
367 | (u32) | |
368 | ACPI_STRLEN(ACPI_CAST_PTR(char, &aml_resource_source[1])) + | |
369 | 1; | |
ea936b78 | 370 | total_length = (u32) ACPI_ROUND_UP_TO_NATIVE_WORD(total_length); |
52fc0b02 | 371 | |
0897831b BM |
372 | ACPI_MEMSET(resource_source->string_ptr, 0, total_length); |
373 | ||
50eca3eb BM |
374 | /* Copy the resource_source string to the destination */ |
375 | ||
376 | resource_source->string_length = | |
377 | acpi_rs_strcpy(resource_source->string_ptr, | |
52fc0b02 BM |
378 | ACPI_CAST_PTR(char, |
379 | &aml_resource_source[1])); | |
50eca3eb | 380 | |
0897831b | 381 | return ((acpi_rs_length) total_length); |
50eca3eb | 382 | } |
96db255c BM |
383 | |
384 | /* resource_source is not present */ | |
385 | ||
386 | resource_source->index = 0; | |
387 | resource_source->string_length = 0; | |
388 | resource_source->string_ptr = NULL; | |
389 | return (0); | |
50eca3eb BM |
390 | } |
391 | ||
392 | /******************************************************************************* | |
393 | * | |
394 | * FUNCTION: acpi_rs_set_resource_source | |
395 | * | |
ba494bee | 396 | * PARAMETERS: aml - Pointer to the raw AML descriptor |
50eca3eb BM |
397 | * minimum_length - Minimum length of the descriptor (minus |
398 | * any optional fields) | |
399 | * resource_source - Internal resource_source | |
400 | ||
401 | * | |
402 | * RETURN: Total length of the AML descriptor | |
403 | * | |
0897831b | 404 | * DESCRIPTION: Convert an optional resource_source from internal format to a |
50eca3eb BM |
405 | * raw AML resource descriptor |
406 | * | |
407 | ******************************************************************************/ | |
408 | ||
0897831b | 409 | acpi_rsdesc_size |
50eca3eb | 410 | acpi_rs_set_resource_source(union aml_resource * aml, |
0897831b | 411 | acpi_rs_length minimum_length, |
50eca3eb BM |
412 | struct acpi_resource_source * resource_source) |
413 | { | |
414 | u8 *aml_resource_source; | |
0897831b | 415 | acpi_rsdesc_size descriptor_length; |
50eca3eb BM |
416 | |
417 | ACPI_FUNCTION_ENTRY(); | |
418 | ||
419 | descriptor_length = minimum_length; | |
420 | ||
421 | /* Non-zero string length indicates presence of a resource_source */ | |
422 | ||
423 | if (resource_source->string_length) { | |
52fc0b02 | 424 | |
50eca3eb BM |
425 | /* Point to the end of the AML descriptor */ |
426 | ||
c51a4de8 | 427 | aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length); |
50eca3eb BM |
428 | |
429 | /* Copy the resource_source_index */ | |
430 | ||
431 | aml_resource_source[0] = (u8) resource_source->index; | |
432 | ||
433 | /* Copy the resource_source string */ | |
434 | ||
52fc0b02 | 435 | ACPI_STRCPY(ACPI_CAST_PTR(char, &aml_resource_source[1]), |
50eca3eb BM |
436 | resource_source->string_ptr); |
437 | ||
438 | /* | |
439 | * Add the length of the string (+ 1 for null terminator) to the | |
440 | * final descriptor length | |
441 | */ | |
442 | descriptor_length += | |
0897831b | 443 | ((acpi_rsdesc_size) resource_source->string_length + 1); |
50eca3eb BM |
444 | } |
445 | ||
446 | /* Return the new total length of the AML descriptor */ | |
447 | ||
448 | return (descriptor_length); | |
449 | } | |
450 | ||
1da177e4 LT |
451 | /******************************************************************************* |
452 | * | |
453 | * FUNCTION: acpi_rs_get_prt_method_data | |
454 | * | |
ba494bee | 455 | * PARAMETERS: node - Device node |
52fc0b02 BM |
456 | * ret_buffer - Pointer to a buffer structure for the |
457 | * results | |
1da177e4 LT |
458 | * |
459 | * RETURN: Status | |
460 | * | |
461 | * DESCRIPTION: This function is called to get the _PRT value of an object | |
462 | * contained in an object specified by the handle passed in | |
463 | * | |
464 | * If the function fails an appropriate status will be returned | |
465 | * and the contents of the callers buffer is undefined. | |
466 | * | |
467 | ******************************************************************************/ | |
50eca3eb | 468 | |
1da177e4 | 469 | acpi_status |
4119532c BM |
470 | acpi_rs_get_prt_method_data(struct acpi_namespace_node * node, |
471 | struct acpi_buffer * ret_buffer) | |
1da177e4 | 472 | { |
4be44fcd LB |
473 | union acpi_operand_object *obj_desc; |
474 | acpi_status status; | |
1da177e4 | 475 | |
b229cf92 | 476 | ACPI_FUNCTION_TRACE(rs_get_prt_method_data); |
1da177e4 LT |
477 | |
478 | /* Parameters guaranteed valid by caller */ | |
479 | ||
44f6c012 RM |
480 | /* Execute the method, no parameters */ |
481 | ||
4119532c | 482 | status = acpi_ut_evaluate_object(node, METHOD_NAME__PRT, |
4be44fcd LB |
483 | ACPI_BTYPE_PACKAGE, &obj_desc); |
484 | if (ACPI_FAILURE(status)) { | |
485 | return_ACPI_STATUS(status); | |
1da177e4 LT |
486 | } |
487 | ||
488 | /* | |
489 | * Create a resource linked list from the byte stream buffer that comes | |
490 | * back from the _CRS method execution. | |
491 | */ | |
4be44fcd | 492 | status = acpi_rs_create_pci_routing_table(obj_desc, ret_buffer); |
1da177e4 LT |
493 | |
494 | /* On exit, we must delete the object returned by evaluate_object */ | |
495 | ||
4be44fcd LB |
496 | acpi_ut_remove_reference(obj_desc); |
497 | return_ACPI_STATUS(status); | |
1da177e4 LT |
498 | } |
499 | ||
1da177e4 LT |
500 | /******************************************************************************* |
501 | * | |
502 | * FUNCTION: acpi_rs_get_crs_method_data | |
503 | * | |
ba494bee | 504 | * PARAMETERS: node - Device node |
52fc0b02 BM |
505 | * ret_buffer - Pointer to a buffer structure for the |
506 | * results | |
1da177e4 LT |
507 | * |
508 | * RETURN: Status | |
509 | * | |
510 | * DESCRIPTION: This function is called to get the _CRS value of an object | |
511 | * contained in an object specified by the handle passed in | |
512 | * | |
513 | * If the function fails an appropriate status will be returned | |
514 | * and the contents of the callers buffer is undefined. | |
515 | * | |
516 | ******************************************************************************/ | |
517 | ||
518 | acpi_status | |
4119532c BM |
519 | acpi_rs_get_crs_method_data(struct acpi_namespace_node *node, |
520 | struct acpi_buffer *ret_buffer) | |
1da177e4 | 521 | { |
4be44fcd LB |
522 | union acpi_operand_object *obj_desc; |
523 | acpi_status status; | |
1da177e4 | 524 | |
b229cf92 | 525 | ACPI_FUNCTION_TRACE(rs_get_crs_method_data); |
1da177e4 LT |
526 | |
527 | /* Parameters guaranteed valid by caller */ | |
528 | ||
44f6c012 RM |
529 | /* Execute the method, no parameters */ |
530 | ||
4119532c | 531 | status = acpi_ut_evaluate_object(node, METHOD_NAME__CRS, |
4be44fcd LB |
532 | ACPI_BTYPE_BUFFER, &obj_desc); |
533 | if (ACPI_FAILURE(status)) { | |
534 | return_ACPI_STATUS(status); | |
1da177e4 LT |
535 | } |
536 | ||
537 | /* | |
538 | * Make the call to create a resource linked list from the | |
539 | * byte stream buffer that comes back from the _CRS method | |
540 | * execution. | |
541 | */ | |
4be44fcd | 542 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
1da177e4 | 543 | |
ba494bee | 544 | /* On exit, we must delete the object returned by evaluateObject */ |
1da177e4 | 545 | |
4be44fcd LB |
546 | acpi_ut_remove_reference(obj_desc); |
547 | return_ACPI_STATUS(status); | |
1da177e4 LT |
548 | } |
549 | ||
1da177e4 LT |
550 | /******************************************************************************* |
551 | * | |
552 | * FUNCTION: acpi_rs_get_prs_method_data | |
553 | * | |
ba494bee | 554 | * PARAMETERS: node - Device node |
52fc0b02 BM |
555 | * ret_buffer - Pointer to a buffer structure for the |
556 | * results | |
1da177e4 LT |
557 | * |
558 | * RETURN: Status | |
559 | * | |
560 | * DESCRIPTION: This function is called to get the _PRS value of an object | |
561 | * contained in an object specified by the handle passed in | |
562 | * | |
563 | * If the function fails an appropriate status will be returned | |
564 | * and the contents of the callers buffer is undefined. | |
565 | * | |
566 | ******************************************************************************/ | |
44f6c012 | 567 | |
1da177e4 LT |
568 | #ifdef ACPI_FUTURE_USAGE |
569 | acpi_status | |
4119532c BM |
570 | acpi_rs_get_prs_method_data(struct acpi_namespace_node *node, |
571 | struct acpi_buffer *ret_buffer) | |
1da177e4 | 572 | { |
4be44fcd LB |
573 | union acpi_operand_object *obj_desc; |
574 | acpi_status status; | |
1da177e4 | 575 | |
b229cf92 | 576 | ACPI_FUNCTION_TRACE(rs_get_prs_method_data); |
1da177e4 LT |
577 | |
578 | /* Parameters guaranteed valid by caller */ | |
579 | ||
44f6c012 RM |
580 | /* Execute the method, no parameters */ |
581 | ||
4119532c | 582 | status = acpi_ut_evaluate_object(node, METHOD_NAME__PRS, |
4be44fcd LB |
583 | ACPI_BTYPE_BUFFER, &obj_desc); |
584 | if (ACPI_FAILURE(status)) { | |
585 | return_ACPI_STATUS(status); | |
1da177e4 LT |
586 | } |
587 | ||
588 | /* | |
589 | * Make the call to create a resource linked list from the | |
590 | * byte stream buffer that comes back from the _CRS method | |
591 | * execution. | |
592 | */ | |
4be44fcd | 593 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
1da177e4 | 594 | |
ba494bee | 595 | /* On exit, we must delete the object returned by evaluateObject */ |
1da177e4 | 596 | |
4be44fcd LB |
597 | acpi_ut_remove_reference(obj_desc); |
598 | return_ACPI_STATUS(status); | |
1da177e4 | 599 | } |
4be44fcd | 600 | #endif /* ACPI_FUTURE_USAGE */ |
1da177e4 | 601 | |
a91cdde2 BM |
602 | /******************************************************************************* |
603 | * | |
604 | * FUNCTION: acpi_rs_get_aei_method_data | |
605 | * | |
ba494bee | 606 | * PARAMETERS: node - Device node |
a91cdde2 BM |
607 | * ret_buffer - Pointer to a buffer structure for the |
608 | * results | |
609 | * | |
610 | * RETURN: Status | |
611 | * | |
612 | * DESCRIPTION: This function is called to get the _AEI value of an object | |
613 | * contained in an object specified by the handle passed in | |
614 | * | |
615 | * If the function fails an appropriate status will be returned | |
616 | * and the contents of the callers buffer is undefined. | |
617 | * | |
618 | ******************************************************************************/ | |
619 | ||
620 | acpi_status | |
621 | acpi_rs_get_aei_method_data(struct acpi_namespace_node *node, | |
622 | struct acpi_buffer *ret_buffer) | |
623 | { | |
624 | union acpi_operand_object *obj_desc; | |
625 | acpi_status status; | |
626 | ||
627 | ACPI_FUNCTION_TRACE(rs_get_aei_method_data); | |
628 | ||
629 | /* Parameters guaranteed valid by caller */ | |
630 | ||
631 | /* Execute the method, no parameters */ | |
632 | ||
633 | status = acpi_ut_evaluate_object(node, METHOD_NAME__AEI, | |
634 | ACPI_BTYPE_BUFFER, &obj_desc); | |
635 | if (ACPI_FAILURE(status)) { | |
636 | return_ACPI_STATUS(status); | |
637 | } | |
638 | ||
639 | /* | |
640 | * Make the call to create a resource linked list from the | |
641 | * byte stream buffer that comes back from the _CRS method | |
642 | * execution. | |
643 | */ | |
644 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); | |
645 | ||
ba494bee | 646 | /* On exit, we must delete the object returned by evaluateObject */ |
a91cdde2 BM |
647 | |
648 | acpi_ut_remove_reference(obj_desc); | |
649 | return_ACPI_STATUS(status); | |
650 | } | |
651 | ||
1da177e4 LT |
652 | /******************************************************************************* |
653 | * | |
654 | * FUNCTION: acpi_rs_get_method_data | |
655 | * | |
ba494bee BM |
656 | * PARAMETERS: handle - Handle to the containing object |
657 | * path - Path to method, relative to Handle | |
52fc0b02 BM |
658 | * ret_buffer - Pointer to a buffer structure for the |
659 | * results | |
1da177e4 LT |
660 | * |
661 | * RETURN: Status | |
662 | * | |
663 | * DESCRIPTION: This function is called to get the _CRS or _PRS value of an | |
664 | * object contained in an object specified by the handle passed in | |
665 | * | |
666 | * If the function fails an appropriate status will be returned | |
667 | * and the contents of the callers buffer is undefined. | |
668 | * | |
669 | ******************************************************************************/ | |
670 | ||
671 | acpi_status | |
4be44fcd LB |
672 | acpi_rs_get_method_data(acpi_handle handle, |
673 | char *path, struct acpi_buffer *ret_buffer) | |
1da177e4 | 674 | { |
4be44fcd LB |
675 | union acpi_operand_object *obj_desc; |
676 | acpi_status status; | |
1da177e4 | 677 | |
b229cf92 | 678 | ACPI_FUNCTION_TRACE(rs_get_method_data); |
1da177e4 LT |
679 | |
680 | /* Parameters guaranteed valid by caller */ | |
681 | ||
44f6c012 RM |
682 | /* Execute the method, no parameters */ |
683 | ||
4be44fcd | 684 | status = |
0fdce476 RW |
685 | acpi_ut_evaluate_object(ACPI_CAST_PTR |
686 | (struct acpi_namespace_node, handle), path, | |
687 | ACPI_BTYPE_BUFFER, &obj_desc); | |
4be44fcd LB |
688 | if (ACPI_FAILURE(status)) { |
689 | return_ACPI_STATUS(status); | |
1da177e4 LT |
690 | } |
691 | ||
692 | /* | |
693 | * Make the call to create a resource linked list from the | |
694 | * byte stream buffer that comes back from the method | |
695 | * execution. | |
696 | */ | |
4be44fcd | 697 | status = acpi_rs_create_resource_list(obj_desc, ret_buffer); |
1da177e4 LT |
698 | |
699 | /* On exit, we must delete the object returned by evaluate_object */ | |
700 | ||
4be44fcd LB |
701 | acpi_ut_remove_reference(obj_desc); |
702 | return_ACPI_STATUS(status); | |
1da177e4 LT |
703 | } |
704 | ||
705 | /******************************************************************************* | |
706 | * | |
707 | * FUNCTION: acpi_rs_set_srs_method_data | |
708 | * | |
ba494bee | 709 | * PARAMETERS: node - Device node |
52fc0b02 BM |
710 | * in_buffer - Pointer to a buffer structure of the |
711 | * parameter | |
1da177e4 LT |
712 | * |
713 | * RETURN: Status | |
714 | * | |
715 | * DESCRIPTION: This function is called to set the _SRS of an object contained | |
716 | * in an object specified by the handle passed in | |
717 | * | |
718 | * If the function fails an appropriate status will be returned | |
719 | * and the contents of the callers buffer is undefined. | |
720 | * | |
4119532c BM |
721 | * Note: Parameters guaranteed valid by caller |
722 | * | |
1da177e4 LT |
723 | ******************************************************************************/ |
724 | ||
725 | acpi_status | |
4119532c BM |
726 | acpi_rs_set_srs_method_data(struct acpi_namespace_node *node, |
727 | struct acpi_buffer *in_buffer) | |
1da177e4 | 728 | { |
4119532c BM |
729 | struct acpi_evaluate_info *info; |
730 | union acpi_operand_object *args[2]; | |
4be44fcd LB |
731 | acpi_status status; |
732 | struct acpi_buffer buffer; | |
1da177e4 | 733 | |
b229cf92 | 734 | ACPI_FUNCTION_TRACE(rs_set_srs_method_data); |
1da177e4 | 735 | |
4119532c BM |
736 | /* Allocate and initialize the evaluation information block */ |
737 | ||
738 | info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info)); | |
739 | if (!info) { | |
740 | return_ACPI_STATUS(AE_NO_MEMORY); | |
741 | } | |
742 | ||
743 | info->prefix_node = node; | |
29a241cc | 744 | info->relative_pathname = METHOD_NAME__SRS; |
4119532c | 745 | info->parameters = args; |
4119532c | 746 | info->flags = ACPI_IGNORE_RETURN_VALUE; |
1da177e4 LT |
747 | |
748 | /* | |
749 | * The in_buffer parameter will point to a linked list of | |
4119532c | 750 | * resource parameters. It needs to be formatted into a |
1da177e4 LT |
751 | * byte stream to be sent in as an input parameter to _SRS |
752 | * | |
753 | * Convert the linked list into a byte stream | |
754 | */ | |
755 | buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; | |
50eca3eb | 756 | status = acpi_rs_create_aml_resources(in_buffer->pointer, &buffer); |
4be44fcd | 757 | if (ACPI_FAILURE(status)) { |
4119532c | 758 | goto cleanup; |
1da177e4 LT |
759 | } |
760 | ||
4119532c | 761 | /* Create and initialize the method parameter object */ |
44f6c012 | 762 | |
4119532c BM |
763 | args[0] = acpi_ut_create_internal_object(ACPI_TYPE_BUFFER); |
764 | if (!args[0]) { | |
765 | /* | |
766 | * Must free the buffer allocated above (otherwise it is freed | |
767 | * later) | |
768 | */ | |
769 | ACPI_FREE(buffer.pointer); | |
770 | status = AE_NO_MEMORY; | |
771 | goto cleanup; | |
1da177e4 LT |
772 | } |
773 | ||
4119532c BM |
774 | args[0]->buffer.length = (u32) buffer.length; |
775 | args[0]->buffer.pointer = buffer.pointer; | |
776 | args[0]->common.flags = AOPOBJ_DATA_VALID; | |
777 | args[1] = NULL; | |
1da177e4 | 778 | |
4119532c | 779 | /* Execute the method, no return value is expected */ |
1da177e4 | 780 | |
4119532c | 781 | status = acpi_ns_evaluate(info); |
44f6c012 | 782 | |
4119532c | 783 | /* Clean up and return the status from acpi_ns_evaluate */ |
1da177e4 | 784 | |
4119532c | 785 | acpi_ut_remove_reference(args[0]); |
44f6c012 | 786 | |
10622bf8 | 787 | cleanup: |
4119532c | 788 | ACPI_FREE(info); |
4be44fcd | 789 | return_ACPI_STATUS(status); |
1da177e4 | 790 | } |