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1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: exconvrt - Object conversion routines | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
8 | * Copyright (C) 2000 - 2005, R. Byron Moore | |
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 | ||
44 | ||
45 | #include <acpi/acpi.h> | |
46 | #include <acpi/acinterp.h> | |
47 | #include <acpi/amlcode.h> | |
48 | ||
49 | ||
50 | #define _COMPONENT ACPI_EXECUTER | |
51 | ACPI_MODULE_NAME ("exconvrt") | |
52 | ||
53 | ||
54 | /******************************************************************************* | |
55 | * | |
56 | * FUNCTION: acpi_ex_convert_to_integer | |
57 | * | |
58 | * PARAMETERS: obj_desc - Object to be converted. Must be an | |
59 | * Integer, Buffer, or String | |
60 | * result_desc - Where the new Integer object is returned | |
61 | * Flags - Used for string conversion | |
62 | * | |
63 | * RETURN: Status | |
64 | * | |
65 | * DESCRIPTION: Convert an ACPI Object to an integer. | |
66 | * | |
67 | ******************************************************************************/ | |
68 | ||
69 | acpi_status | |
70 | acpi_ex_convert_to_integer ( | |
71 | union acpi_operand_object *obj_desc, | |
72 | union acpi_operand_object **result_desc, | |
73 | u32 flags) | |
74 | { | |
75 | union acpi_operand_object *return_desc; | |
76 | u8 *pointer; | |
77 | acpi_integer result; | |
78 | u32 i; | |
79 | u32 count; | |
80 | acpi_status status; | |
81 | ||
82 | ||
83 | ACPI_FUNCTION_TRACE_PTR ("ex_convert_to_integer", obj_desc); | |
84 | ||
85 | ||
86 | switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { | |
87 | case ACPI_TYPE_INTEGER: | |
88 | ||
89 | /* No conversion necessary */ | |
90 | ||
91 | *result_desc = obj_desc; | |
92 | return_ACPI_STATUS (AE_OK); | |
93 | ||
94 | case ACPI_TYPE_BUFFER: | |
95 | case ACPI_TYPE_STRING: | |
96 | ||
97 | /* Note: Takes advantage of common buffer/string fields */ | |
98 | ||
99 | pointer = obj_desc->buffer.pointer; | |
100 | count = obj_desc->buffer.length; | |
101 | break; | |
102 | ||
103 | default: | |
104 | return_ACPI_STATUS (AE_TYPE); | |
105 | } | |
106 | ||
107 | /* | |
108 | * Convert the buffer/string to an integer. Note that both buffers and | |
109 | * strings are treated as raw data - we don't convert ascii to hex for | |
110 | * strings. | |
111 | * | |
112 | * There are two terminating conditions for the loop: | |
113 | * 1) The size of an integer has been reached, or | |
114 | * 2) The end of the buffer or string has been reached | |
115 | */ | |
116 | result = 0; | |
117 | ||
118 | /* | |
119 | * String conversion is different than Buffer conversion | |
120 | */ | |
121 | switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { | |
122 | case ACPI_TYPE_STRING: | |
123 | ||
124 | /* | |
125 | * Convert string to an integer - for most cases, the string must be | |
126 | * hexadecimal as per the ACPI specification. The only exception (as | |
127 | * of ACPI 3.0) is that the to_integer() operator allows both decimal | |
128 | * and hexadecimal strings (hex prefixed with "0x"). | |
129 | */ | |
130 | status = acpi_ut_strtoul64 ((char *) pointer, flags, &result); | |
131 | if (ACPI_FAILURE (status)) { | |
132 | return_ACPI_STATUS (status); | |
133 | } | |
134 | break; | |
135 | ||
136 | ||
137 | case ACPI_TYPE_BUFFER: | |
138 | ||
139 | /* Check for zero-length buffer */ | |
140 | ||
141 | if (!count) { | |
142 | return_ACPI_STATUS (AE_AML_BUFFER_LIMIT); | |
143 | } | |
144 | ||
145 | /* Transfer no more than an integer's worth of data */ | |
146 | ||
147 | if (count > acpi_gbl_integer_byte_width) { | |
148 | count = acpi_gbl_integer_byte_width; | |
149 | } | |
150 | ||
151 | /* | |
152 | * Convert buffer to an integer - we simply grab enough raw data | |
153 | * from the buffer to fill an integer | |
154 | */ | |
155 | for (i = 0; i < count; i++) { | |
156 | /* | |
157 | * Get next byte and shift it into the Result. | |
158 | * Little endian is used, meaning that the first byte of the buffer | |
159 | * is the LSB of the integer | |
160 | */ | |
161 | result |= (((acpi_integer) pointer[i]) << (i * 8)); | |
162 | } | |
163 | break; | |
164 | ||
165 | ||
166 | default: | |
167 | /* No other types can get here */ | |
168 | break; | |
169 | } | |
170 | ||
171 | /* | |
172 | * Create a new integer | |
173 | */ | |
174 | return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER); | |
175 | if (!return_desc) { | |
176 | return_ACPI_STATUS (AE_NO_MEMORY); | |
177 | } | |
178 | ||
179 | /* Save the Result */ | |
180 | ||
181 | return_desc->integer.value = result; | |
182 | acpi_ex_truncate_for32bit_table (return_desc); | |
183 | *result_desc = return_desc; | |
184 | return_ACPI_STATUS (AE_OK); | |
185 | } | |
186 | ||
187 | ||
188 | /******************************************************************************* | |
189 | * | |
190 | * FUNCTION: acpi_ex_convert_to_buffer | |
191 | * | |
192 | * PARAMETERS: obj_desc - Object to be converted. Must be an | |
193 | * Integer, Buffer, or String | |
194 | * result_desc - Where the new buffer object is returned | |
195 | * | |
196 | * RETURN: Status | |
197 | * | |
198 | * DESCRIPTION: Convert an ACPI Object to a Buffer | |
199 | * | |
200 | ******************************************************************************/ | |
201 | ||
202 | acpi_status | |
203 | acpi_ex_convert_to_buffer ( | |
204 | union acpi_operand_object *obj_desc, | |
205 | union acpi_operand_object **result_desc) | |
206 | { | |
207 | union acpi_operand_object *return_desc; | |
208 | u8 *new_buf; | |
209 | ||
210 | ||
211 | ACPI_FUNCTION_TRACE_PTR ("ex_convert_to_buffer", obj_desc); | |
212 | ||
213 | ||
214 | switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { | |
215 | case ACPI_TYPE_BUFFER: | |
216 | ||
217 | /* No conversion necessary */ | |
218 | ||
219 | *result_desc = obj_desc; | |
220 | return_ACPI_STATUS (AE_OK); | |
221 | ||
222 | ||
223 | case ACPI_TYPE_INTEGER: | |
224 | ||
225 | /* | |
226 | * Create a new Buffer object. | |
227 | * Need enough space for one integer | |
228 | */ | |
229 | return_desc = acpi_ut_create_buffer_object (acpi_gbl_integer_byte_width); | |
230 | if (!return_desc) { | |
231 | return_ACPI_STATUS (AE_NO_MEMORY); | |
232 | } | |
233 | ||
234 | /* Copy the integer to the buffer, LSB first */ | |
235 | ||
236 | new_buf = return_desc->buffer.pointer; | |
237 | ACPI_MEMCPY (new_buf, | |
238 | &obj_desc->integer.value, | |
239 | acpi_gbl_integer_byte_width); | |
240 | break; | |
241 | ||
242 | ||
243 | case ACPI_TYPE_STRING: | |
244 | ||
245 | /* | |
246 | * Create a new Buffer object | |
247 | * Size will be the string length | |
248 | * | |
249 | * NOTE: Add one to the string length to include the null terminator. | |
250 | * The ACPI spec is unclear on this subject, but there is existing | |
251 | * ASL/AML code that depends on the null being transferred to the new | |
252 | * buffer. | |
253 | */ | |
254 | return_desc = acpi_ut_create_buffer_object ((acpi_size) obj_desc->string.length + 1); | |
255 | if (!return_desc) { | |
256 | return_ACPI_STATUS (AE_NO_MEMORY); | |
257 | } | |
258 | ||
259 | /* Copy the string to the buffer */ | |
260 | ||
261 | new_buf = return_desc->buffer.pointer; | |
262 | ACPI_STRNCPY ((char *) new_buf, (char *) obj_desc->string.pointer, | |
263 | obj_desc->string.length); | |
264 | break; | |
265 | ||
266 | ||
267 | default: | |
268 | return_ACPI_STATUS (AE_TYPE); | |
269 | } | |
270 | ||
271 | /* Mark buffer initialized */ | |
272 | ||
273 | return_desc->common.flags |= AOPOBJ_DATA_VALID; | |
274 | *result_desc = return_desc; | |
275 | return_ACPI_STATUS (AE_OK); | |
276 | } | |
277 | ||
278 | ||
279 | /******************************************************************************* | |
280 | * | |
281 | * FUNCTION: acpi_ex_convert_to_ascii | |
282 | * | |
283 | * PARAMETERS: Integer - Value to be converted | |
284 | * Base - ACPI_STRING_DECIMAL or ACPI_STRING_HEX | |
285 | * String - Where the string is returned | |
286 | * data_width - Size of data item to be converted, in bytes | |
287 | * | |
288 | * RETURN: Actual string length | |
289 | * | |
290 | * DESCRIPTION: Convert an ACPI Integer to a hex or decimal string | |
291 | * | |
292 | ******************************************************************************/ | |
293 | ||
294 | u32 | |
295 | acpi_ex_convert_to_ascii ( | |
296 | acpi_integer integer, | |
297 | u16 base, | |
298 | u8 *string, | |
299 | u8 data_width) | |
300 | { | |
301 | acpi_integer digit; | |
302 | acpi_native_uint i; | |
303 | acpi_native_uint j; | |
304 | acpi_native_uint k = 0; | |
305 | acpi_native_uint hex_length; | |
306 | acpi_native_uint decimal_length; | |
307 | u32 remainder; | |
308 | u8 supress_zeros; | |
309 | ||
310 | ||
311 | ACPI_FUNCTION_ENTRY (); | |
312 | ||
313 | ||
314 | switch (base) { | |
315 | case 10: | |
316 | ||
317 | /* Setup max length for the decimal number */ | |
318 | ||
319 | switch (data_width) { | |
320 | case 1: | |
321 | decimal_length = ACPI_MAX8_DECIMAL_DIGITS; | |
322 | break; | |
323 | ||
324 | case 4: | |
325 | decimal_length = ACPI_MAX32_DECIMAL_DIGITS; | |
326 | break; | |
327 | ||
328 | case 8: | |
329 | default: | |
330 | decimal_length = ACPI_MAX64_DECIMAL_DIGITS; | |
331 | break; | |
332 | } | |
333 | ||
334 | supress_zeros = TRUE; /* No leading zeros */ | |
335 | remainder = 0; | |
336 | ||
337 | for (i = decimal_length; i > 0; i--) { | |
338 | /* Divide by nth factor of 10 */ | |
339 | ||
340 | digit = integer; | |
341 | for (j = 0; j < i; j++) { | |
342 | (void) acpi_ut_short_divide (digit, 10, &digit, &remainder); | |
343 | } | |
344 | ||
345 | /* Handle leading zeros */ | |
346 | ||
347 | if (remainder != 0) { | |
348 | supress_zeros = FALSE; | |
349 | } | |
350 | ||
351 | if (!supress_zeros) { | |
352 | string[k] = (u8) (ACPI_ASCII_ZERO + remainder); | |
353 | k++; | |
354 | } | |
355 | } | |
356 | break; | |
357 | ||
358 | case 16: | |
359 | ||
360 | hex_length = ACPI_MUL_2 (data_width); /* 2 ascii hex chars per data byte */ | |
361 | ||
362 | for (i = 0, j = (hex_length-1); i < hex_length; i++, j--) { | |
363 | /* Get one hex digit, most significant digits first */ | |
364 | ||
365 | string[k] = (u8) acpi_ut_hex_to_ascii_char (integer, ACPI_MUL_4 (j)); | |
366 | k++; | |
367 | } | |
368 | break; | |
369 | ||
370 | default: | |
371 | return (0); | |
372 | } | |
373 | ||
374 | /* | |
375 | * Since leading zeros are supressed, we must check for the case where | |
376 | * the integer equals 0 | |
377 | * | |
378 | * Finally, null terminate the string and return the length | |
379 | */ | |
380 | if (!k) { | |
381 | string [0] = ACPI_ASCII_ZERO; | |
382 | k = 1; | |
383 | } | |
384 | ||
385 | string [k] = 0; | |
386 | return ((u32) k); | |
387 | } | |
388 | ||
389 | ||
390 | /******************************************************************************* | |
391 | * | |
392 | * FUNCTION: acpi_ex_convert_to_string | |
393 | * | |
394 | * PARAMETERS: obj_desc - Object to be converted. Must be an | |
395 | * Integer, Buffer, or String | |
396 | * result_desc - Where the string object is returned | |
397 | * Type - String flags (base and conversion type) | |
398 | * | |
399 | * RETURN: Status | |
400 | * | |
401 | * DESCRIPTION: Convert an ACPI Object to a string | |
402 | * | |
403 | ******************************************************************************/ | |
404 | ||
405 | acpi_status | |
406 | acpi_ex_convert_to_string ( | |
407 | union acpi_operand_object *obj_desc, | |
408 | union acpi_operand_object **result_desc, | |
409 | u32 type) | |
410 | { | |
411 | union acpi_operand_object *return_desc; | |
412 | u8 *new_buf; | |
413 | u32 i; | |
414 | u32 string_length = 0; | |
415 | u16 base = 16; | |
416 | u8 separator = ','; | |
417 | ||
418 | ||
419 | ACPI_FUNCTION_TRACE_PTR ("ex_convert_to_string", obj_desc); | |
420 | ||
421 | ||
422 | switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { | |
423 | case ACPI_TYPE_STRING: | |
424 | ||
425 | /* No conversion necessary */ | |
426 | ||
427 | *result_desc = obj_desc; | |
428 | return_ACPI_STATUS (AE_OK); | |
429 | ||
430 | ||
431 | case ACPI_TYPE_INTEGER: | |
432 | ||
433 | switch (type) { | |
434 | case ACPI_EXPLICIT_CONVERT_DECIMAL: | |
435 | ||
436 | /* Make room for maximum decimal number */ | |
437 | ||
438 | string_length = ACPI_MAX_DECIMAL_DIGITS; | |
439 | base = 10; | |
440 | break; | |
441 | ||
442 | default: | |
443 | ||
444 | /* Two hex string characters for each integer byte */ | |
445 | ||
446 | string_length = ACPI_MUL_2 (acpi_gbl_integer_byte_width); | |
447 | break; | |
448 | } | |
449 | ||
450 | /* | |
451 | * Create a new String | |
452 | * Need enough space for one ASCII integer (plus null terminator) | |
453 | */ | |
454 | return_desc = acpi_ut_create_string_object ((acpi_size) string_length); | |
455 | if (!return_desc) { | |
456 | return_ACPI_STATUS (AE_NO_MEMORY); | |
457 | } | |
458 | ||
459 | new_buf = return_desc->buffer.pointer; | |
460 | ||
461 | /* Convert integer to string */ | |
462 | ||
463 | string_length = acpi_ex_convert_to_ascii (obj_desc->integer.value, base, | |
464 | new_buf, acpi_gbl_integer_byte_width); | |
465 | ||
466 | /* Null terminate at the correct place */ | |
467 | ||
468 | return_desc->string.length = string_length; | |
469 | new_buf [string_length] = 0; | |
470 | break; | |
471 | ||
472 | ||
473 | case ACPI_TYPE_BUFFER: | |
474 | ||
475 | /* Setup string length, base, and separator */ | |
476 | ||
477 | switch (type) { | |
478 | case ACPI_EXPLICIT_CONVERT_DECIMAL: /* Used by to_decimal_string operator */ | |
479 | /* | |
480 | * From ACPI: "If Data is a buffer, it is converted to a string of | |
481 | * decimal values separated by commas." | |
482 | */ | |
483 | base = 10; | |
484 | ||
485 | /* | |
486 | * Calculate the final string length. Individual string values | |
487 | * are variable length (include separator for each) | |
488 | */ | |
489 | for (i = 0; i < obj_desc->buffer.length; i++) { | |
490 | if (obj_desc->buffer.pointer[i] >= 100) { | |
491 | string_length += 4; | |
492 | } | |
493 | else if (obj_desc->buffer.pointer[i] >= 10) { | |
494 | string_length += 3; | |
495 | } | |
496 | else { | |
497 | string_length += 2; | |
498 | } | |
499 | } | |
500 | break; | |
501 | ||
502 | case ACPI_IMPLICIT_CONVERT_HEX: | |
503 | /* | |
504 | * From the ACPI spec: | |
505 | *"The entire contents of the buffer are converted to a string of | |
506 | * two-character hexadecimal numbers, each separated by a space." | |
507 | */ | |
508 | separator = ' '; | |
509 | string_length = (obj_desc->buffer.length * 3); | |
510 | break; | |
511 | ||
512 | case ACPI_EXPLICIT_CONVERT_HEX: /* Used by to_hex_string operator */ | |
513 | /* | |
514 | * From ACPI: "If Data is a buffer, it is converted to a string of | |
515 | * hexadecimal values separated by commas." | |
516 | */ | |
517 | string_length = (obj_desc->buffer.length * 3); | |
518 | break; | |
519 | ||
520 | default: | |
521 | return_ACPI_STATUS (AE_BAD_PARAMETER); | |
522 | } | |
523 | ||
524 | /* | |
525 | * Perform the conversion. | |
526 | * (-1 because of extra separator included in string_length from above) | |
527 | */ | |
528 | string_length--; | |
529 | if (string_length > ACPI_MAX_STRING_CONVERSION) /* ACPI limit */ { | |
530 | return_ACPI_STATUS (AE_AML_STRING_LIMIT); | |
531 | } | |
532 | ||
533 | /* | |
534 | * Create a new string object and string buffer | |
535 | */ | |
536 | return_desc = acpi_ut_create_string_object ((acpi_size) string_length); | |
537 | if (!return_desc) { | |
538 | return_ACPI_STATUS (AE_NO_MEMORY); | |
539 | } | |
540 | ||
541 | new_buf = return_desc->buffer.pointer; | |
542 | ||
543 | /* | |
544 | * Convert buffer bytes to hex or decimal values | |
545 | * (separated by commas or spaces) | |
546 | */ | |
547 | for (i = 0; i < obj_desc->buffer.length; i++) { | |
548 | new_buf += acpi_ex_convert_to_ascii ( | |
549 | (acpi_integer) obj_desc->buffer.pointer[i], base, | |
550 | new_buf, 1); | |
551 | *new_buf++ = separator; /* each separated by a comma or space */ | |
552 | } | |
553 | ||
554 | /* Null terminate the string (overwrites final comma/space from above) */ | |
555 | ||
556 | new_buf--; | |
557 | *new_buf = 0; | |
558 | break; | |
559 | ||
560 | default: | |
561 | return_ACPI_STATUS (AE_TYPE); | |
562 | } | |
563 | ||
564 | *result_desc = return_desc; | |
565 | return_ACPI_STATUS (AE_OK); | |
566 | } | |
567 | ||
568 | ||
569 | /******************************************************************************* | |
570 | * | |
571 | * FUNCTION: acpi_ex_convert_to_target_type | |
572 | * | |
573 | * PARAMETERS: destination_type - Current type of the destination | |
574 | * source_desc - Source object to be converted. | |
575 | * result_desc - Where the converted object is returned | |
576 | * walk_state - Current method state | |
577 | * | |
578 | * RETURN: Status | |
579 | * | |
580 | * DESCRIPTION: Implements "implicit conversion" rules for storing an object. | |
581 | * | |
582 | ******************************************************************************/ | |
583 | ||
584 | acpi_status | |
585 | acpi_ex_convert_to_target_type ( | |
586 | acpi_object_type destination_type, | |
587 | union acpi_operand_object *source_desc, | |
588 | union acpi_operand_object **result_desc, | |
589 | struct acpi_walk_state *walk_state) | |
590 | { | |
591 | acpi_status status = AE_OK; | |
592 | ||
593 | ||
594 | ACPI_FUNCTION_TRACE ("ex_convert_to_target_type"); | |
595 | ||
596 | ||
597 | /* Default behavior */ | |
598 | ||
599 | *result_desc = source_desc; | |
600 | ||
601 | /* | |
602 | * If required by the target, | |
603 | * perform implicit conversion on the source before we store it. | |
604 | */ | |
605 | switch (GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args)) { | |
606 | case ARGI_SIMPLE_TARGET: | |
607 | case ARGI_FIXED_TARGET: | |
608 | case ARGI_INTEGER_REF: /* Handles Increment, Decrement cases */ | |
609 | ||
610 | switch (destination_type) { | |
611 | case ACPI_TYPE_LOCAL_REGION_FIELD: | |
612 | /* | |
613 | * Named field can always handle conversions | |
614 | */ | |
615 | break; | |
616 | ||
617 | default: | |
618 | /* No conversion allowed for these types */ | |
619 | ||
620 | if (destination_type != ACPI_GET_OBJECT_TYPE (source_desc)) { | |
621 | ACPI_DEBUG_PRINT ((ACPI_DB_INFO, | |
622 | "Explicit operator, will store (%s) over existing type (%s)\n", | |
623 | acpi_ut_get_object_type_name (source_desc), | |
624 | acpi_ut_get_type_name (destination_type))); | |
625 | status = AE_TYPE; | |
626 | } | |
627 | } | |
628 | break; | |
629 | ||
630 | ||
631 | case ARGI_TARGETREF: | |
632 | ||
633 | switch (destination_type) { | |
634 | case ACPI_TYPE_INTEGER: | |
635 | case ACPI_TYPE_BUFFER_FIELD: | |
636 | case ACPI_TYPE_LOCAL_BANK_FIELD: | |
637 | case ACPI_TYPE_LOCAL_INDEX_FIELD: | |
638 | /* | |
639 | * These types require an Integer operand. We can convert | |
640 | * a Buffer or a String to an Integer if necessary. | |
641 | */ | |
642 | status = acpi_ex_convert_to_integer (source_desc, result_desc, | |
643 | 16); | |
644 | break; | |
645 | ||
646 | ||
647 | case ACPI_TYPE_STRING: | |
648 | ||
649 | /* | |
650 | * The operand must be a String. We can convert an | |
651 | * Integer or Buffer if necessary | |
652 | */ | |
653 | status = acpi_ex_convert_to_string (source_desc, result_desc, | |
654 | ACPI_IMPLICIT_CONVERT_HEX); | |
655 | break; | |
656 | ||
657 | ||
658 | case ACPI_TYPE_BUFFER: | |
659 | ||
660 | /* | |
661 | * The operand must be a Buffer. We can convert an | |
662 | * Integer or String if necessary | |
663 | */ | |
664 | status = acpi_ex_convert_to_buffer (source_desc, result_desc); | |
665 | break; | |
666 | ||
667 | ||
668 | default: | |
669 | ACPI_REPORT_ERROR (("Bad destination type during conversion: %X\n", | |
670 | destination_type)); | |
671 | status = AE_AML_INTERNAL; | |
672 | break; | |
673 | } | |
674 | break; | |
675 | ||
676 | ||
677 | case ARGI_REFERENCE: | |
678 | /* | |
679 | * create_xxxx_field cases - we are storing the field object into the name | |
680 | */ | |
681 | break; | |
682 | ||
683 | ||
684 | default: | |
685 | ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, | |
686 | "Unknown Target type ID 0x%X Op %s dest_type %s\n", | |
687 | GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args), | |
688 | walk_state->op_info->name, acpi_ut_get_type_name (destination_type))); | |
689 | ||
690 | ACPI_REPORT_ERROR (("Bad Target Type (ARGI): %X\n", | |
691 | GET_CURRENT_ARG_TYPE (walk_state->op_info->runtime_args))) | |
692 | status = AE_AML_INTERNAL; | |
693 | } | |
694 | ||
695 | /* | |
696 | * Source-to-Target conversion semantics: | |
697 | * | |
698 | * If conversion to the target type cannot be performed, then simply | |
699 | * overwrite the target with the new object and type. | |
700 | */ | |
701 | if (status == AE_TYPE) { | |
702 | status = AE_OK; | |
703 | } | |
704 | ||
705 | return_ACPI_STATUS (status); | |
706 | } | |
707 | ||
708 |