1 /*******************************************************************************
3 * Module Name: rsmisc - Miscellaneous resource descriptors
5 ******************************************************************************/
8 * Copyright (C) 2000 - 2006, R. Byron Moore
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
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18 * substantially similar to the "NO WARRANTY" disclaimer below
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20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
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23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
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
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44 #include <acpi/acpi.h>
45 #include <acpi/acresrc.h>
47 #define _COMPONENT ACPI_RESOURCES
48 ACPI_MODULE_NAME("rsmisc")
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 /*******************************************************************************
58 * FUNCTION: acpi_rs_convert_aml_to_resource
60 * PARAMETERS: Resource - Pointer to the resource descriptor
61 * Aml - Where the AML descriptor is returned
62 * Info - Pointer to appropriate conversion table
66 * DESCRIPTION: Convert an external AML resource descriptor to the corresponding
67 * internal resource descriptor
69 ******************************************************************************/
71 acpi_rs_convert_aml_to_resource(struct acpi_resource *resource,
72 union aml_resource *aml,
73 struct acpi_rsconvert_info *info)
75 acpi_rs_length aml_resource_length;
80 u8 flags_mode = FALSE;
84 ACPI_FUNCTION_TRACE("rs_get_resource");
86 if (((acpi_native_uint) resource) & 0x3) {
88 ("**** GET: Misaligned resource pointer: %p Type %2.2X Len %X\n",
89 resource, resource->type, resource->length);
92 /* Extract the resource Length field (does not include header length) */
94 aml_resource_length = acpi_ut_get_resource_length(aml);
97 * First table entry must be ACPI_RSC_INITxxx and must contain the
98 * table length (# of table entries)
100 count = INIT_TABLE_LENGTH(info);
104 * Source is the external AML byte stream buffer,
105 * destination is the internal resource descriptor
107 source = ACPI_ADD_PTR(void, aml, info->aml_offset);
109 ACPI_ADD_PTR(void, resource, info->resource_offset);
111 switch (info->opcode) {
112 case ACPI_RSC_INITGET:
114 * Get the resource type and the initial (minimum) length
116 ACPI_MEMSET(resource, 0, INIT_RESOURCE_LENGTH(info));
117 resource->type = INIT_RESOURCE_TYPE(info);
118 resource->length = INIT_RESOURCE_LENGTH(info);
121 case ACPI_RSC_INITSET:
124 case ACPI_RSC_FLAGINIT:
129 case ACPI_RSC_1BITFLAG:
131 * Mask and shift the flag bit
133 ACPI_SET8(destination) = (u8)
134 ((ACPI_GET8(source) >> info->value) & 0x01);
137 case ACPI_RSC_2BITFLAG:
139 * Mask and shift the flag bits
141 ACPI_SET8(destination) = (u8)
142 ((ACPI_GET8(source) >> info->value) & 0x03);
147 item_count = ACPI_GET8(source);
148 ACPI_SET8(destination) = (u8) item_count;
150 resource->length = resource->length +
151 (info->value * (item_count - 1));
154 case ACPI_RSC_COUNT16:
156 item_count = aml_resource_length;
157 ACPI_SET16(destination) = item_count;
159 resource->length = resource->length +
160 (info->value * (item_count - 1));
163 case ACPI_RSC_LENGTH:
165 resource->length = resource->length + info->value;
169 case ACPI_RSC_MOVE16:
170 case ACPI_RSC_MOVE32:
171 case ACPI_RSC_MOVE64:
173 * Raw data move. Use the Info value field unless item_count has
174 * been previously initialized via a COUNT opcode
177 item_count = info->value;
179 acpi_rs_move_data(destination, source, item_count,
185 ACPI_MEMSET(destination, info->aml_offset, info->value);
190 target = ACPI_ADD_PTR(char, resource, info->value);
191 ACPI_MEMCPY(destination, source, ACPI_GET16(target));
194 case ACPI_RSC_ADDRESS:
196 * Common handler for address descriptor flags
198 if (!acpi_rs_get_address_common(resource, aml)) {
200 (AE_AML_INVALID_RESOURCE_TYPE);
204 case ACPI_RSC_SOURCE:
206 * Optional resource_source (Index and String)
209 acpi_rs_get_resource_source(aml_resource_length,
211 destination, aml, NULL);
214 case ACPI_RSC_SOURCEX:
216 * Optional resource_source (Index and String). This is the more
217 * complicated case used by the Interrupt() macro
220 ACPI_ADD_PTR(char, resource,
221 info->aml_offset + (item_count * 4));
224 acpi_rs_get_resource_source(aml_resource_length,
225 (acpi_rs_length) (((item_count - 1) * sizeof(u32)) + info->value), destination, aml, target);
228 case ACPI_RSC_BITMASK:
230 * 8-bit encoded bitmask (DMA macro)
233 acpi_rs_decode_bitmask(ACPI_GET8(source),
236 resource->length += (item_count - 1);
239 target = ACPI_ADD_PTR(char, resource, info->value);
240 ACPI_SET8(target) = (u8) item_count;
243 case ACPI_RSC_BITMASK16:
245 * 16-bit encoded bitmask (IRQ macro)
247 ACPI_MOVE_16_TO_16(&temp16, source);
250 acpi_rs_decode_bitmask(temp16, destination);
252 resource->length += (item_count - 1);
255 target = ACPI_ADD_PTR(char, resource, info->value);
256 ACPI_SET8(target) = (u8) item_count;
259 case ACPI_RSC_EXIT_NE:
261 * Control - Exit conversion if not equal
263 switch (info->resource_offset) {
264 case ACPI_RSC_COMPARE_AML_LENGTH:
265 if (aml_resource_length != info->value) {
270 case ACPI_RSC_COMPARE_VALUE:
271 if (ACPI_GET8(source) != info->value) {
278 ("*** Invalid conversion sub-opcode\n");
279 return_ACPI_STATUS(AE_BAD_PARAMETER);
285 acpi_os_printf("*** Invalid conversion opcode\n");
286 return_ACPI_STATUS(AE_BAD_PARAMETER);
295 /* Round the resource struct length up to the next 32-bit boundary */
297 resource->length = ACPI_ROUND_UP_to_32_bITS(resource->length);
299 return_ACPI_STATUS(AE_OK);
302 /*******************************************************************************
304 * FUNCTION: acpi_rs_convert_resource_to_aml
306 * PARAMETERS: Resource - Pointer to the resource descriptor
307 * Aml - Where the AML descriptor is returned
308 * Info - Pointer to appropriate conversion table
312 * DESCRIPTION: Convert an internal resource descriptor to the corresponding
313 * external AML resource descriptor.
315 ******************************************************************************/
318 acpi_rs_convert_resource_to_aml(struct acpi_resource *resource,
319 union aml_resource *aml,
320 struct acpi_rsconvert_info *info)
324 acpi_rsdesc_size aml_length = 0;
329 ACPI_FUNCTION_TRACE("rs_convert_resource_to_aml");
332 * First table entry must be ACPI_RSC_INITxxx and must contain the
333 * table length (# of table entries)
335 count = INIT_TABLE_LENGTH(info);
339 * Source is the internal resource descriptor,
340 * destination is the external AML byte stream buffer
342 source = ACPI_ADD_PTR(void, resource, info->resource_offset);
343 destination = ACPI_ADD_PTR(void, aml, info->aml_offset);
345 switch (info->opcode) {
346 case ACPI_RSC_INITSET:
348 ACPI_MEMSET(aml, 0, INIT_RESOURCE_LENGTH(info));
349 aml_length = INIT_RESOURCE_LENGTH(info);
350 acpi_rs_set_resource_header(INIT_RESOURCE_TYPE(info),
354 case ACPI_RSC_INITGET:
357 case ACPI_RSC_FLAGINIT:
359 * Clear the flag byte
361 ACPI_SET8(destination) = 0;
364 case ACPI_RSC_1BITFLAG:
366 * Mask and shift the flag bit
368 ACPI_SET8(destination) |= (u8)
369 ((ACPI_GET8(source) & 0x01) << info->value);
372 case ACPI_RSC_2BITFLAG:
374 * Mask and shift the flag bits
376 ACPI_SET8(destination) |= (u8)
377 ((ACPI_GET8(source) & 0x03) << info->value);
382 item_count = ACPI_GET8(source);
383 ACPI_SET8(destination) = (u8) item_count;
387 (info->value * (item_count - 1)));
390 case ACPI_RSC_COUNT16:
392 item_count = ACPI_GET16(source);
393 aml_length = (u16) (aml_length + item_count);
394 acpi_rs_set_resource_length(aml_length, aml);
397 case ACPI_RSC_LENGTH:
399 acpi_rs_set_resource_length(info->value, aml);
403 case ACPI_RSC_MOVE16:
404 case ACPI_RSC_MOVE32:
405 case ACPI_RSC_MOVE64:
408 item_count = info->value;
410 acpi_rs_move_data(destination, source, item_count,
414 case ACPI_RSC_ADDRESS:
416 /* Set the Resource Type, General Flags, and Type-Specific Flags */
418 acpi_rs_set_address_common(aml, resource);
421 case ACPI_RSC_SOURCEX:
423 * Optional resource_source (Index and String)
426 acpi_rs_set_resource_source(aml,
429 acpi_rs_set_resource_length(aml_length, aml);
432 case ACPI_RSC_SOURCE:
434 * Optional resource_source (Index and String). This is the more
435 * complicated case used by the Interrupt() macro
438 acpi_rs_set_resource_source(aml, info->value,
440 acpi_rs_set_resource_length(aml_length, aml);
443 case ACPI_RSC_BITMASK:
445 * 8-bit encoded bitmask (DMA macro)
447 ACPI_SET8(destination) = (u8)
448 acpi_rs_encode_bitmask(source,
449 *ACPI_ADD_PTR(u8, resource,
453 case ACPI_RSC_BITMASK16:
455 * 16-bit encoded bitmask (IRQ macro)
457 temp16 = acpi_rs_encode_bitmask(source,
462 ACPI_MOVE_16_TO_16(destination, &temp16);
465 case ACPI_RSC_EXIT_LE:
467 * Control - Exit conversion if less than or equal
469 if (item_count <= info->value) {
474 case ACPI_RSC_EXIT_NE:
476 * Control - Exit conversion if not equal
478 switch (COMPARE_OPCODE(info)) {
479 case ACPI_RSC_COMPARE_VALUE:
481 if (*ACPI_ADD_PTR(u8, resource,
482 COMPARE_TARGET(info)) !=
483 COMPARE_VALUE(info)) {
490 ("*** Invalid conversion sub-opcode\n");
491 return_ACPI_STATUS(AE_BAD_PARAMETER);
497 acpi_os_printf("*** Invalid conversion opcode\n");
498 return_ACPI_STATUS(AE_BAD_PARAMETER);
506 return_ACPI_STATUS(AE_OK);
510 /* Previous resource validations */
512 if (aml->ext_address64.revision_iD != AML_RESOURCE_EXTENDED_ADDRESS_REVISION) {
513 return_ACPI_STATUS(AE_SUPPORT);
516 if (resource->data.start_dpf.performance_robustness >= 3) {
517 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_VALUE);
520 if (((aml->irq.flags & 0x09) == 0x00) || ((aml->irq.flags & 0x09) == 0x09)) {
522 * Only [active_high, edge_sensitive] or [active_low, level_sensitive]
523 * polarity/trigger interrupts are allowed (ACPI spec, section
524 * "IRQ Format"), so 0x00 and 0x09 are illegal.
526 ACPI_REPORT_ERROR(("Invalid interrupt polarity/trigger in resource list, %X\n", aml->irq.flags));
527 return_ACPI_STATUS(AE_BAD_DATA);
530 resource->data.extended_irq.interrupt_count = temp8;
532 /* Must have at least one IRQ */
534 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
537 if (resource->data.dma.transfer == 0x03) {
538 ACPI_REPORT_ERROR(("Invalid DMA.Transfer preference (3)\n"));
539 return_ACPI_STATUS(AE_BAD_DATA);