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path: root/drivers/acpi/utilities/utcopy.c
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-rw-r--r--drivers/acpi/utilities/utcopy.c126
1 files changed, 91 insertions, 35 deletions
diff --git a/drivers/acpi/utilities/utcopy.c b/drivers/acpi/utilities/utcopy.c
index 0fcd98bde0d1..11e884957162 100644
--- a/drivers/acpi/utilities/utcopy.c
+++ b/drivers/acpi/utilities/utcopy.c
@@ -49,21 +49,69 @@
49#define _COMPONENT ACPI_UTILITIES 49#define _COMPONENT ACPI_UTILITIES
50 ACPI_MODULE_NAME ("utcopy") 50 ACPI_MODULE_NAME ("utcopy")
51 51
52/* Local prototypes */
53
54static acpi_status
55acpi_ut_copy_isimple_to_esimple (
56 union acpi_operand_object *internal_object,
57 union acpi_object *external_object,
58 u8 *data_space,
59 acpi_size *buffer_space_used);
60
61static acpi_status
62acpi_ut_copy_ielement_to_ielement (
63 u8 object_type,
64 union acpi_operand_object *source_object,
65 union acpi_generic_state *state,
66 void *context);
67
68static acpi_status
69acpi_ut_copy_ipackage_to_epackage (
70 union acpi_operand_object *internal_object,
71 u8 *buffer,
72 acpi_size *space_used);
73
74static acpi_status
75acpi_ut_copy_esimple_to_isimple(
76 union acpi_object *user_obj,
77 union acpi_operand_object **return_obj);
78
79static acpi_status
80acpi_ut_copy_simple_object (
81 union acpi_operand_object *source_desc,
82 union acpi_operand_object *dest_desc);
83
84static acpi_status
85acpi_ut_copy_ielement_to_eelement (
86 u8 object_type,
87 union acpi_operand_object *source_object,
88 union acpi_generic_state *state,
89 void *context);
90
91static acpi_status
92acpi_ut_copy_ipackage_to_ipackage (
93 union acpi_operand_object *source_obj,
94 union acpi_operand_object *dest_obj,
95 struct acpi_walk_state *walk_state);
96
52 97
53/******************************************************************************* 98/*******************************************************************************
54 * 99 *
55 * FUNCTION: acpi_ut_copy_isimple_to_esimple 100 * FUNCTION: acpi_ut_copy_isimple_to_esimple
56 * 101 *
57 * PARAMETERS: *internal_object - Pointer to the object we are examining 102 * PARAMETERS: internal_object - Source object to be copied
58 * *Buffer - Where the object is returned 103 * external_object - Where to return the copied object
59 * *space_used - Where the data length is returned 104 * data_space - Where object data is returned (such as
105 * buffer and string data)
106 * buffer_space_used - Length of data_space that was used
60 * 107 *
61 * RETURN: Status 108 * RETURN: Status
62 * 109 *
63 * DESCRIPTION: This function is called to place a simple object in a user 110 * DESCRIPTION: This function is called to copy a simple internal object to
64 * buffer. 111 * an external object.
65 * 112 *
66 * The buffer is assumed to have sufficient space for the object. 113 * The data_space buffer is assumed to have sufficient space for
114 * the object.
67 * 115 *
68 ******************************************************************************/ 116 ******************************************************************************/
69 117
@@ -107,10 +155,12 @@ acpi_ut_copy_isimple_to_esimple (
107 155
108 external_object->string.pointer = (char *) data_space; 156 external_object->string.pointer = (char *) data_space;
109 external_object->string.length = internal_object->string.length; 157 external_object->string.length = internal_object->string.length;
110 *buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD ((acpi_size) internal_object->string.length + 1); 158 *buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD (
159 (acpi_size) internal_object->string.length + 1);
111 160
112 ACPI_MEMCPY ((void *) data_space, (void *) internal_object->string.pointer, 161 ACPI_MEMCPY ((void *) data_space,
113 (acpi_size) internal_object->string.length + 1); 162 (void *) internal_object->string.pointer,
163 (acpi_size) internal_object->string.length + 1);
114 break; 164 break;
115 165
116 166
@@ -118,10 +168,12 @@ acpi_ut_copy_isimple_to_esimple (
118 168
119 external_object->buffer.pointer = data_space; 169 external_object->buffer.pointer = data_space;
120 external_object->buffer.length = internal_object->buffer.length; 170 external_object->buffer.length = internal_object->buffer.length;
121 *buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD (internal_object->string.length); 171 *buffer_space_used = ACPI_ROUND_UP_TO_NATIVE_WORD (
172 internal_object->string.length);
122 173
123 ACPI_MEMCPY ((void *) data_space, (void *) internal_object->buffer.pointer, 174 ACPI_MEMCPY ((void *) data_space,
124 internal_object->buffer.length); 175 (void *) internal_object->buffer.pointer,
176 internal_object->buffer.length);
125 break; 177 break;
126 178
127 179
@@ -194,7 +246,7 @@ acpi_ut_copy_isimple_to_esimple (
194 * 246 *
195 ******************************************************************************/ 247 ******************************************************************************/
196 248
197acpi_status 249static acpi_status
198acpi_ut_copy_ielement_to_eelement ( 250acpi_ut_copy_ielement_to_eelement (
199 u8 object_type, 251 u8 object_type,
200 union acpi_operand_object *source_object, 252 union acpi_operand_object *source_object,
@@ -213,7 +265,7 @@ acpi_ut_copy_ielement_to_eelement (
213 265
214 this_index = state->pkg.index; 266 this_index = state->pkg.index;
215 target_object = (union acpi_object *) 267 target_object = (union acpi_object *)
216 &((union acpi_object *)(state->pkg.dest_object))->package.elements[this_index]; 268 &((union acpi_object *)(state->pkg.dest_object))->package.elements[this_index];
217 269
218 switch (object_type) { 270 switch (object_type) {
219 case ACPI_COPY_TYPE_SIMPLE: 271 case ACPI_COPY_TYPE_SIMPLE:
@@ -236,7 +288,8 @@ acpi_ut_copy_ielement_to_eelement (
236 */ 288 */
237 target_object->type = ACPI_TYPE_PACKAGE; 289 target_object->type = ACPI_TYPE_PACKAGE;
238 target_object->package.count = source_object->package.count; 290 target_object->package.count = source_object->package.count;
239 target_object->package.elements = ACPI_CAST_PTR (union acpi_object, info->free_space); 291 target_object->package.elements =
292 ACPI_CAST_PTR (union acpi_object, info->free_space);
240 293
241 /* 294 /*
242 * Pass the new package object back to the package walk routine 295 * Pass the new package object back to the package walk routine
@@ -248,7 +301,8 @@ acpi_ut_copy_ielement_to_eelement (
248 * update the buffer length counter 301 * update the buffer length counter
249 */ 302 */
250 object_space = ACPI_ROUND_UP_TO_NATIVE_WORD ( 303 object_space = ACPI_ROUND_UP_TO_NATIVE_WORD (
251 (acpi_size) target_object->package.count * sizeof (union acpi_object)); 304 (acpi_size) target_object->package.count *
305 sizeof (union acpi_object));
252 break; 306 break;
253 307
254 308
@@ -266,9 +320,9 @@ acpi_ut_copy_ielement_to_eelement (
266 * 320 *
267 * FUNCTION: acpi_ut_copy_ipackage_to_epackage 321 * FUNCTION: acpi_ut_copy_ipackage_to_epackage
268 * 322 *
269 * PARAMETERS: *internal_object - Pointer to the object we are returning 323 * PARAMETERS: internal_object - Pointer to the object we are returning
270 * *Buffer - Where the object is returned 324 * Buffer - Where the object is returned
271 * *space_used - Where the object length is returned 325 * space_used - Where the object length is returned
272 * 326 *
273 * RETURN: Status 327 * RETURN: Status
274 * 328 *
@@ -304,13 +358,15 @@ acpi_ut_copy_ipackage_to_epackage (
304 * Free space begins right after the first package 358 * Free space begins right after the first package
305 */ 359 */
306 info.length = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object)); 360 info.length = ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object));
307 info.free_space = buffer + ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object)); 361 info.free_space = buffer + ACPI_ROUND_UP_TO_NATIVE_WORD (
362 sizeof (union acpi_object));
308 info.object_space = 0; 363 info.object_space = 0;
309 info.num_packages = 1; 364 info.num_packages = 1;
310 365
311 external_object->type = ACPI_GET_OBJECT_TYPE (internal_object); 366 external_object->type = ACPI_GET_OBJECT_TYPE (internal_object);
312 external_object->package.count = internal_object->package.count; 367 external_object->package.count = internal_object->package.count;
313 external_object->package.elements = ACPI_CAST_PTR (union acpi_object, info.free_space); 368 external_object->package.elements = ACPI_CAST_PTR (union acpi_object,
369 info.free_space);
314 370
315 /* 371 /*
316 * Leave room for an array of ACPI_OBJECTS in the buffer 372 * Leave room for an array of ACPI_OBJECTS in the buffer
@@ -333,8 +389,8 @@ acpi_ut_copy_ipackage_to_epackage (
333 * 389 *
334 * FUNCTION: acpi_ut_copy_iobject_to_eobject 390 * FUNCTION: acpi_ut_copy_iobject_to_eobject
335 * 391 *
336 * PARAMETERS: *internal_object - The internal object to be converted 392 * PARAMETERS: internal_object - The internal object to be converted
337 * *buffer_ptr - Where the object is returned 393 * buffer_ptr - Where the object is returned
338 * 394 *
339 * RETURN: Status 395 * RETURN: Status
340 * 396 *
@@ -367,10 +423,10 @@ acpi_ut_copy_iobject_to_eobject (
367 * Build a simple object (no nested objects) 423 * Build a simple object (no nested objects)
368 */ 424 */
369 status = acpi_ut_copy_isimple_to_esimple (internal_object, 425 status = acpi_ut_copy_isimple_to_esimple (internal_object,
370 (union acpi_object *) ret_buffer->pointer, 426 (union acpi_object *) ret_buffer->pointer,
371 ((u8 *) ret_buffer->pointer + 427 ((u8 *) ret_buffer->pointer +
372 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object))), 428 ACPI_ROUND_UP_TO_NATIVE_WORD (sizeof (union acpi_object))),
373 &ret_buffer->length); 429 &ret_buffer->length);
374 /* 430 /*
375 * build simple does not include the object size in the length 431 * build simple does not include the object size in the length
376 * so we add it in here 432 * so we add it in here
@@ -386,8 +442,8 @@ acpi_ut_copy_iobject_to_eobject (
386 * 442 *
387 * FUNCTION: acpi_ut_copy_esimple_to_isimple 443 * FUNCTION: acpi_ut_copy_esimple_to_isimple
388 * 444 *
389 * PARAMETERS: *external_object - The external object to be converted 445 * PARAMETERS: external_object - The external object to be converted
390 * *internal_object - Where the internal object is returned 446 * ret_internal_object - Where the internal object is returned
391 * 447 *
392 * RETURN: Status 448 * RETURN: Status
393 * 449 *
@@ -398,7 +454,7 @@ acpi_ut_copy_iobject_to_eobject (
398 * 454 *
399 ******************************************************************************/ 455 ******************************************************************************/
400 456
401acpi_status 457static acpi_status
402acpi_ut_copy_esimple_to_isimple ( 458acpi_ut_copy_esimple_to_isimple (
403 union acpi_object *external_object, 459 union acpi_object *external_object,
404 union acpi_operand_object **ret_internal_object) 460 union acpi_operand_object **ret_internal_object)
@@ -417,7 +473,8 @@ acpi_ut_copy_esimple_to_isimple (
417 case ACPI_TYPE_BUFFER: 473 case ACPI_TYPE_BUFFER:
418 case ACPI_TYPE_INTEGER: 474 case ACPI_TYPE_INTEGER:
419 475
420 internal_object = acpi_ut_create_internal_object ((u8) external_object->type); 476 internal_object = acpi_ut_create_internal_object (
477 (u8) external_object->type);
421 if (!internal_object) { 478 if (!internal_object) {
422 return_ACPI_STATUS (AE_NO_MEMORY); 479 return_ACPI_STATUS (AE_NO_MEMORY);
423 } 480 }
@@ -486,7 +543,6 @@ error_exit:
486 543
487 544
488#ifdef ACPI_FUTURE_IMPLEMENTATION 545#ifdef ACPI_FUTURE_IMPLEMENTATION
489
490/* Code to convert packages that are parameters to control methods */ 546/* Code to convert packages that are parameters to control methods */
491 547
492/******************************************************************************* 548/*******************************************************************************
@@ -614,7 +670,7 @@ acpi_ut_copy_eobject_to_iobject (
614 * 670 *
615 ******************************************************************************/ 671 ******************************************************************************/
616 672
617acpi_status 673static acpi_status
618acpi_ut_copy_simple_object ( 674acpi_ut_copy_simple_object (
619 union acpi_operand_object *source_desc, 675 union acpi_operand_object *source_desc,
620 union acpi_operand_object *dest_desc) 676 union acpi_operand_object *dest_desc)
@@ -724,7 +780,7 @@ acpi_ut_copy_simple_object (
724 * 780 *
725 ******************************************************************************/ 781 ******************************************************************************/
726 782
727acpi_status 783static acpi_status
728acpi_ut_copy_ielement_to_ielement ( 784acpi_ut_copy_ielement_to_ielement (
729 u8 object_type, 785 u8 object_type,
730 union acpi_operand_object *source_object, 786 union acpi_operand_object *source_object,
@@ -837,7 +893,7 @@ error_exit:
837 * 893 *
838 ******************************************************************************/ 894 ******************************************************************************/
839 895
840acpi_status 896static acpi_status
841acpi_ut_copy_ipackage_to_ipackage ( 897acpi_ut_copy_ipackage_to_ipackage (
842 union acpi_operand_object *source_obj, 898 union acpi_operand_object *source_obj,
843 union acpi_operand_object *dest_obj, 899 union acpi_operand_object *dest_obj,