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[ACPI] ACPICA 20051021
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / acpi / resources / rsmisc.c
blob16ad3bfbee2ad85b4d044b364933fd43ce53c999
1 /*******************************************************************************
2 *
3 * Module Name: rsmisc - Miscellaneous resource descriptors
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 #include <acpi/acpi.h>
45 #include <acpi/acresrc.h>
46
47 #define _COMPONENT ACPI_RESOURCES
48 ACPI_MODULE_NAME("rsmisc")
49
50 #define INIT_RESOURCE_TYPE(i) i->resource_offset
51 #define INIT_RESOURCE_LENGTH(i) i->aml_offset
52 #define INIT_TABLE_LENGTH(i) i->value
53 #define COMPARE_OPCODE(i) i->resource_offset
54 #define COMPARE_TARGET(i) i->aml_offset
55 #define COMPARE_VALUE(i) i->value
56 /*******************************************************************************
57 *
58 * FUNCTION: acpi_rs_convert_aml_to_resource
59 *
60 * PARAMETERS: Resource - Pointer to the resource descriptor
61 * Aml - Where the AML descriptor is returned
62 * Info - Pointer to appropriate conversion table
63 *
64 * RETURN: Status
65 *
66 * DESCRIPTION: Convert an external AML resource descriptor to the corresponding
67 * internal resource descriptor
68 *
69 ******************************************************************************/
70 acpi_status
71 acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,
72 union aml_resource *aml,
73 struct acpi_rsconvert_info *info)
74 {
75 acpi_rs_length aml_resource_length;
76 void *source;
77 void *destination;
78 char *target;
79 u8 count;
80 u8 flags_mode = FALSE;
81 u16 item_count = 0;
82 u16 temp16 = 0;
83
84 ACPI_FUNCTION_TRACE("rs_get_resource");
85
86 if (((acpi_native_uint) resource) & 0x3) {
87 acpi_os_printf
88 ("**** GET: Misaligned resource pointer: %p Type %2.2X Len %X\n",
89 resource, resource->type, resource->length);
90 }
91
92 /* Extract the resource Length field (does not include header length) */
93
94 aml_resource_length = acpi_ut_get_resource_length(aml);
95
96 /*
97 * First table entry must be ACPI_RSC_INITxxx and must contain the
98 * table length (# of table entries)
99 */
100 count = INIT_TABLE_LENGTH(info);
101
102 while (count) {
103 /*
104 * Source is the external AML byte stream buffer,
105 * destination is the internal resource descriptor
106 */
107 source = ((u8 *) aml) + info->aml_offset;
108 destination = ((u8 *) resource) + info->resource_offset;
109
110 switch (info->opcode) {
111 case ACPI_RSC_INITGET:
112 /*
113 * Get the resource type and the initial (minimum) length
114 */
115 ACPI_MEMSET(resource, 0, INIT_RESOURCE_LENGTH(info));
116 resource->type = INIT_RESOURCE_TYPE(info);
117 resource->length = INIT_RESOURCE_LENGTH(info);
118 break;
119
120 case ACPI_RSC_INITSET:
121 break;
122
123 case ACPI_RSC_FLAGINIT:
124
125 flags_mode = TRUE;
126 break;
127
128 case ACPI_RSC_1BITFLAG:
129 /*
130 * Mask and shift the flag bit
131 */
132 *((u8 *) destination) = (u8)
133 ((*((u8 *) source) >> info->value) & 0x01);
134 break;
135
136 case ACPI_RSC_2BITFLAG:
137 /*
138 * Mask and shift the flag bits
139 */
140 *((u8 *) destination) = (u8)
141 ((*((u8 *) source) >> info->value) & 0x03);
142 break;
143
144 case ACPI_RSC_COUNT:
145
146 item_count = *((u8 *) source);
147 *((u8 *) destination) = (u8) item_count;
148
149 resource->length = resource->length +
150 (info->value * (item_count - 1));
151 break;
152
153 case ACPI_RSC_COUNT16:
154
155 item_count = aml_resource_length;
156 *((u16 *) destination) = item_count;
157
158 resource->length = resource->length +
159 (info->value * (item_count - 1));
160 break;
161
162 case ACPI_RSC_LENGTH:
163
164 resource->length = resource->length + info->value;
165 break;
166
167 case ACPI_RSC_MOVE8:
168 case ACPI_RSC_MOVE16:
169 case ACPI_RSC_MOVE32:
170 case ACPI_RSC_MOVE64:
171 /*
172 * Raw data move. Use the Info value field unless item_count has
173 * been previously initialized via a COUNT opcode
174 */
175 if (info->value) {
176 item_count = info->value;
177 }
178 acpi_rs_move_data(destination, source, item_count,
179 info->opcode);
180 break;
181
182 case ACPI_RSC_SET8:
183
184 ACPI_MEMSET(destination, info->aml_offset, info->value);
185 break;
186
187 case ACPI_RSC_DATA8:
188
189 target = ((char *)resource) + info->value;
190 ACPI_MEMCPY(destination, source,
191 *(ACPI_CAST_PTR(u16, target)));
192 break;
193
194 case ACPI_RSC_ADDRESS:
195 /*
196 * Common handler for address descriptor flags
197 */
198 if (!acpi_rs_get_address_common(resource, aml)) {
199 return_ACPI_STATUS
200 (AE_AML_INVALID_RESOURCE_TYPE);
201 }
202 break;
203
204 case ACPI_RSC_SOURCE:
205 /*
206 * Optional resource_source (Index and String)
207 */
208 resource->length +=
209 acpi_rs_get_resource_source(aml_resource_length,
210 info->value,
211 destination, aml, NULL);
212 break;
213
214 case ACPI_RSC_SOURCEX:
215 /*
216 * Optional resource_source (Index and String). This is the more
217 * complicated case used by the Interrupt() macro
218 */
219 target =
220 ((char *)resource) + info->aml_offset +
221 (item_count * 4);
222
223 resource->length +=
224 acpi_rs_get_resource_source(aml_resource_length,
225 (acpi_rs_length) (((item_count - 1) * sizeof(u32)) + info->value), destination, aml, target);
226 break;
227
228 case ACPI_RSC_BITMASK:
229 /*
230 * 8-bit encoded bitmask (DMA macro)
231 */
232 item_count =
233 acpi_rs_decode_bitmask(*((u8 *) source),
234 destination);
235 if (item_count) {
236 resource->length +=
237 resource->length + (item_count - 1);
238 }
239
240 target = ((char *)resource) + info->value;
241 *((u8 *) target) = (u8) item_count;
242 break;
243
244 case ACPI_RSC_BITMASK16:
245 /*
246 * 16-bit encoded bitmask (IRQ macro)
247 */
248 ACPI_MOVE_16_TO_16(&temp16, source);
249
250 item_count =
251 acpi_rs_decode_bitmask(temp16, destination);
252 if (item_count) {
253 resource->length =
254 resource->length + (item_count - 1);
255 }
256
257 target = ((char *)resource) + info->value;
258 *((u8 *) target) = (u8) item_count;
259 break;
260
261 case ACPI_RSC_EXIT_NE:
262 /*
263 * Control - Exit conversion if not equal
264 */
265 switch (info->resource_offset) {
266 case ACPI_RSC_COMPARE_AML_LENGTH:
267 if (aml_resource_length != info->value) {
268 goto exit;
269 }
270 break;
271
272 case ACPI_RSC_COMPARE_VALUE:
273 if (*((u8 *) source) != info->value) {
274 goto exit;
275 }
276 break;
277
278 default:
279 acpi_os_printf
280 ("*** Invalid conversion sub-opcode\n");
281 return_ACPI_STATUS(AE_BAD_PARAMETER);
282 }
283 break;
284
285 default:
286
287 acpi_os_printf("*** Invalid conversion opcode\n");
288 return_ACPI_STATUS(AE_BAD_PARAMETER);
289 }
290
291 count--;
292 info++;
293 }
294
295 exit:
296 if (!flags_mode) {
297 /* Round the resource struct length up to the next 32-bit boundary */
298
299 resource->length = ACPI_ROUND_UP_to_32_bITS(resource->length);
300 }
301 return_ACPI_STATUS(AE_OK);
302 }
303
304 /*******************************************************************************
305 *
306 * FUNCTION: acpi_rs_convert_resource_to_aml
307 *
308 * PARAMETERS: Resource - Pointer to the resource descriptor
309 * Aml - Where the AML descriptor is returned
310 * Info - Pointer to appropriate conversion table
311 *
312 * RETURN: Status
313 *
314 * DESCRIPTION: Convert an internal resource descriptor to the corresponding
315 * external AML resource descriptor.
316 *
317 ******************************************************************************/
318
319 acpi_status
320 acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,
321 union aml_resource *aml,
322 struct acpi_rsconvert_info *info)
323 {
324 void *source = NULL;
325 void *destination;
326 acpi_rsdesc_size aml_length = 0;
327 u8 count;
328 u16 temp16 = 0;
329 u16 item_count = 0;
330
331 ACPI_FUNCTION_TRACE("rs_convert_resource_to_aml");
332
333 /* Validate the Resource pointer, must be 32-bit aligned */
334
335 if (((acpi_native_uint) resource) & 0x3) {
336 acpi_os_printf
337 ("**** SET: Misaligned resource pointer: %p Type %2.2X Len %X\n",
338 resource, resource->type, resource->length);
339 }
340
341 /*
342 * First table entry must be ACPI_RSC_INITxxx and must contain the
343 * table length (# of table entries)
344 */
345 count = INIT_TABLE_LENGTH(info);
346
347 while (count) {
348 /*
349 * Source is the internal resource descriptor,
350 * destination is the external AML byte stream buffer
351 */
352 source = ((u8 *) resource) + info->resource_offset;
353 destination = ((u8 *) aml) + info->aml_offset;
354
355 switch (info->opcode) {
356 case ACPI_RSC_INITSET:
357
358 ACPI_MEMSET(aml, 0, INIT_RESOURCE_LENGTH(info));
359 aml_length = INIT_RESOURCE_LENGTH(info);
360 acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),
361 aml_length, aml);
362 break;
363
364 case ACPI_RSC_INITGET:
365 break;
366
367 case ACPI_RSC_FLAGINIT:
368 /*
369 * Clear the flag byte
370 */
371 *((u8 *) destination) = 0;
372 break;
373
374 case ACPI_RSC_1BITFLAG:
375 /*
376 * Mask and shift the flag bit
377 */
378 *((u8 *) destination) |= (u8)
379 ((*((u8 *) source) & 0x01) << info->value);
380 break;
381
382 case ACPI_RSC_2BITFLAG:
383 /*
384 * Mask and shift the flag bits
385 */
386 *((u8 *) destination) |= (u8)
387 ((*((u8 *) source) & 0x03) << info->value);
388 break;
389
390 case ACPI_RSC_COUNT:
391
392 item_count = *((u8 *) source);
393 *((u8 *) destination) = (u8) item_count;
394
395 aml_length = (u16) (aml_length +
396 (info->value * (item_count - 1)));
397 break;
398
399 case ACPI_RSC_COUNT16:
400
401 item_count = *((u16 *) source);
402 aml_length = (u16) (aml_length + item_count);
403 acpi_rs_set_resource_length(aml_length, aml);
404 break;
405
406 case ACPI_RSC_LENGTH:
407
408 acpi_rs_set_resource_length(info->value, aml);
409 break;
410
411 case ACPI_RSC_MOVE8:
412 case ACPI_RSC_MOVE16:
413 case ACPI_RSC_MOVE32:
414 case ACPI_RSC_MOVE64:
415
416 if (info->value) {
417 item_count = info->value;
418 }
419 acpi_rs_move_data(destination, source, item_count,
420 info->opcode);
421 break;
422
423 case ACPI_RSC_ADDRESS:
424
425 /* Set the Resource Type, General Flags, and Type-Specific Flags */
426
427 acpi_rs_set_address_common(aml, resource);
428 break;
429
430 case ACPI_RSC_SOURCEX:
431 /*
432 * Optional resource_source (Index and String)
433 */
434 aml_length =
435 acpi_rs_set_resource_source(aml,
436 (acpi_rs_length)
437 aml_length, source);
438 acpi_rs_set_resource_length(aml_length, aml);
439 break;
440
441 case ACPI_RSC_SOURCE:
442 /*
443 * Optional resource_source (Index and String). This is the more
444 * complicated case used by the Interrupt() macro
445 */
446 aml_length =
447 acpi_rs_set_resource_source(aml, info->value,
448 source);
449 acpi_rs_set_resource_length(aml_length, aml);
450 break;
451
452 case ACPI_RSC_BITMASK:
453 /*
454 * 8-bit encoded bitmask (DMA macro)
455 */
456 *((u8 *) destination) = (u8)
457 acpi_rs_encode_bitmask(source,
458 *(((u8 *) resource) +
459 info->value));
460 break;
461
462 case ACPI_RSC_BITMASK16:
463 /*
464 * 16-bit encoded bitmask (IRQ macro)
465 */
466 temp16 =
467 acpi_rs_encode_bitmask(source,
468 *(((u8 *) resource) +
469 info->value));
470 ACPI_MOVE_16_TO_16(destination, &temp16);
471 break;
472
473 case ACPI_RSC_EXIT_LE:
474 /*
475 * Control - Exit conversion if less than or equal
476 */
477 if (item_count <= info->value) {
478 goto exit;
479 }
480 break;
481
482 case ACPI_RSC_EXIT_NE:
483 /*
484 * Control - Exit conversion if not equal
485 */
486 switch (COMPARE_OPCODE(info)) {
487 case ACPI_RSC_COMPARE_VALUE:
488 if (*
489 ((u8 *) (((u8 *) resource) +
490 COMPARE_TARGET(info))) !=
491 COMPARE_VALUE(info)) {
492 goto exit;
493 }
494 break;
495
496 default:
497 acpi_os_printf
498 ("*** Invalid conversion sub-opcode\n");
499 return_ACPI_STATUS(AE_BAD_PARAMETER);
500 }
501 break;
502
503 default:
504
505 acpi_os_printf("*** Invalid conversion opcode\n");
506 return_ACPI_STATUS(AE_BAD_PARAMETER);
507 }
508
509 count--;
510 info++;
511 }
512
513 exit:
514 return_ACPI_STATUS(AE_OK);
515 }
516
517 #if 0
518 /* Previous resource validations */
519
520 if (aml->ext_address64.revision_iD != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {
521 return_ACPI_STATUS(AE_SUPPORT);
522 }
523
524 if (resource->data.start_dpf.performance_robustness >= 3) {
525 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
526 }
527
528 if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) {
529 /*
530 * Only [active_high, edge_sensitive] or [active_low, level_sensitive]
531 * polarity/trigger interrupts are allowed (ACPI spec, section
532 * "IRQ Format"), so 0x00 and 0x09 are illegal.
533 */
534 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
535 "Invalid interrupt polarity/trigger in resource list, %X\n",
536 aml->irq.flags));
537 return_ACPI_STATUS(AE_BAD_DATA);
538 }
539
540 resource->data.extended_irq.interrupt_count = temp8;
541 if (temp8 < 1) {
542 /* Must have at least one IRQ */
543
544 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
545 }
546
547 if (resource->data.dma.transfer == 0x03) {
548 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
549 "Invalid DMA.Transfer preference (3)\n"));
550 return_ACPI_STATUS(AE_BAD_DATA);
551 }
552 #endif
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