1 /*******************************************************************************
3 * Module Name: rsaddr - Address resource descriptors (16/32/64)
5 ******************************************************************************/
8 * Copyright (C) 2000 - 2005, 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.
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.
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.
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.
44 #include <acpi/acpi.h>
45 #include <acpi/acresrc.h>
47 #define _COMPONENT ACPI_RESOURCES
48 ACPI_MODULE_NAME("rsaddr")
50 /* Local prototypes */
52 acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags);
54 static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource);
57 acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags);
59 static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource);
61 /*******************************************************************************
63 * FUNCTION: acpi_rs_decode_general_flags
65 * PARAMETERS: Resource - Address resource data struct
66 * Flags - Actual flag byte
68 * RETURN: Decoded flag bits in resource struct
70 * DESCRIPTION: Decode a general flag byte to an address resource struct
72 ******************************************************************************/
75 acpi_rs_decode_general_flags(union acpi_resource_data *resource, u8 flags)
77 ACPI_FUNCTION_ENTRY();
79 /* Producer / Consumer - flag bit[0] */
81 resource->address.producer_consumer = (u32) (flags & 0x01);
83 /* Decode (_DEC) - flag bit[1] */
85 resource->address.decode = (u32) ((flags >> 1) & 0x01);
87 /* Min Address Fixed (_MIF) - flag bit[2] */
89 resource->address.min_address_fixed = (u32) ((flags >> 2) & 0x01);
91 /* Max Address Fixed (_MAF) - flag bit[3] */
93 resource->address.max_address_fixed = (u32) ((flags >> 3) & 0x01);
96 /*******************************************************************************
98 * FUNCTION: acpi_rs_encode_general_flags
100 * PARAMETERS: Resource - Address resource data struct
102 * RETURN: Encoded general flag byte
104 * DESCRIPTION: Construct a general flag byte from an address resource struct
106 ******************************************************************************/
108 static u8 acpi_rs_encode_general_flags(union acpi_resource_data *resource)
112 ACPI_FUNCTION_ENTRY();
114 /* Producer / Consumer - flag bit[0] */
116 flags = (u8) (resource->address.producer_consumer & 0x01);
118 /* Decode (_DEC) - flag bit[1] */
120 flags |= (u8) ((resource->address.decode & 0x01) << 1);
122 /* Min Address Fixed (_MIF) - flag bit[2] */
124 flags |= (u8) ((resource->address.min_address_fixed & 0x01) << 2);
126 /* Max Address Fixed (_MAF) - flag bit[3] */
128 flags |= (u8) ((resource->address.max_address_fixed & 0x01) << 3);
133 /*******************************************************************************
135 * FUNCTION: acpi_rs_decode_specific_flags
137 * PARAMETERS: Resource - Address resource data struct
138 * Flags - Actual flag byte
140 * RETURN: Decoded flag bits in attribute struct
142 * DESCRIPTION: Decode a type-specific flag byte to an attribute struct.
143 * Type-specific flags are only defined for the Memory and IO
146 ******************************************************************************/
149 acpi_rs_decode_specific_flags(union acpi_resource_data *resource, u8 flags)
151 ACPI_FUNCTION_ENTRY();
153 if (resource->address.resource_type == ACPI_MEMORY_RANGE) {
154 /* Write Status (_RW) - flag bit[0] */
156 resource->address.attribute.memory.read_write_attribute =
157 (u16) (flags & 0x01);
159 /* Memory Attributes (_MEM) - flag bits[2:1] */
161 resource->address.attribute.memory.cache_attribute =
162 (u16) ((flags >> 1) & 0x03);
163 } else if (resource->address.resource_type == ACPI_IO_RANGE) {
164 /* Ranges (_RNG) - flag bits[1:0] */
166 resource->address.attribute.io.range_attribute =
167 (u16) (flags & 0x03);
169 /* Translations (_TTP and _TRS) - flag bits[5:4] */
171 resource->address.attribute.io.translation_attribute =
172 (u16) ((flags >> 4) & 0x03);
176 /*******************************************************************************
178 * FUNCTION: acpi_rs_encode_specific_flags
180 * PARAMETERS: Resource - Address resource data struct
182 * RETURN: Encoded type-specific flag byte
184 * DESCRIPTION: Construct a type-specific flag byte from an attribute struct.
185 * Type-specific flags are only defined for the Memory and IO
188 ******************************************************************************/
190 static u8 acpi_rs_encode_specific_flags(union acpi_resource_data *resource)
194 ACPI_FUNCTION_ENTRY();
196 if (resource->address.resource_type == ACPI_MEMORY_RANGE) {
197 /* Write Status (_RW) - flag bit[0] */
200 (resource->address.attribute.memory.
201 read_write_attribute & 0x01);
203 /* Memory Attributes (_MEM) - flag bits[2:1] */
206 ((resource->address.attribute.memory.
207 cache_attribute & 0x03) << 1);
208 } else if (resource->address.resource_type == ACPI_IO_RANGE) {
209 /* Ranges (_RNG) - flag bits[1:0] */
212 (resource->address.attribute.io.range_attribute & 0x03);
214 /* Translations (_TTP and _TRS) - flag bits[5:4] */
217 ((resource->address.attribute.io.
218 translation_attribute & 0x03) << 4);
224 /*******************************************************************************
226 * FUNCTION: acpi_rs_address16_resource
228 * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
230 * bytes_consumed - Pointer to where the number of bytes
231 * consumed the byte_stream_buffer is
233 * output_buffer - Pointer to the return data buffer
234 * structure_size - Pointer to where the number of bytes
235 * in the return data struct is returned
239 * DESCRIPTION: Take the resource byte stream and fill out the appropriate
240 * structure pointed to by the output_buffer. Return the
241 * number of bytes consumed from the byte stream.
243 ******************************************************************************/
246 acpi_rs_address16_resource(u8 * byte_stream_buffer,
247 acpi_size * bytes_consumed,
248 u8 ** output_buffer, acpi_size * structure_size)
254 u8 *buffer = byte_stream_buffer;
255 struct acpi_resource *output_struct = (void *)*output_buffer;
256 acpi_size struct_size =
257 ACPI_SIZEOF_RESOURCE(struct acpi_resource_address16);
259 ACPI_FUNCTION_TRACE("rs_address16_resource");
261 /* Get the Descriptor Length field */
264 ACPI_MOVE_16_TO_16(&temp16, buffer);
266 /* Validate minimum descriptor length */
269 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
272 *bytes_consumed = temp16 + 3;
273 output_struct->id = ACPI_RSTYPE_ADDRESS16;
275 /* Get the Resource Type (Byte3) */
280 /* Values 0-2 and 0xC0-0xFF are valid */
282 if ((temp8 > 2) && (temp8 < 0xC0)) {
283 return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
286 output_struct->data.address16.resource_type = temp8;
288 /* Get the General Flags (Byte4) */
291 acpi_rs_decode_general_flags(&output_struct->data, *buffer);
293 /* Get the Type Specific Flags (Byte5) */
296 acpi_rs_decode_specific_flags(&output_struct->data, *buffer);
298 /* Get Granularity (Bytes 6-7) */
301 ACPI_MOVE_16_TO_32(&output_struct->data.address16.granularity, buffer);
303 /* Get min_address_range (Bytes 8-9) */
306 ACPI_MOVE_16_TO_32(&output_struct->data.address16.min_address_range,
309 /* Get max_address_range (Bytes 10-11) */
312 ACPI_MOVE_16_TO_32(&output_struct->data.address16.max_address_range,
315 /* Get address_translation_offset (Bytes 12-13) */
318 ACPI_MOVE_16_TO_32(&output_struct->data.address16.
319 address_translation_offset, buffer);
321 /* Get address_length (Bytes 14-15) */
324 ACPI_MOVE_16_TO_32(&output_struct->data.address16.address_length,
327 /* Resource Source Index (if present) */
332 * This will leave us pointing to the Resource Source Index
333 * If it is present, then save it off and calculate the
334 * pointer to where the null terminated string goes:
335 * Each Interrupt takes 32-bits + the 5 bytes of the
336 * stream that are default.
338 * Note: Some resource descriptors will have an additional null, so
339 * we add 1 to the length.
341 if (*bytes_consumed > (16 + 1)) {
342 /* Dereference the Index */
344 output_struct->data.address16.resource_source.index =
347 /* Point to the String */
351 /* Point the String pointer to the end of this structure */
353 output_struct->data.address16.resource_source.string_ptr =
354 (char *)((u8 *) output_struct + struct_size);
357 output_struct->data.address16.resource_source.string_ptr;
359 /* Copy the resource_source string into the buffer */
370 /* Add the terminating null and set the string length */
373 output_struct->data.address16.resource_source.string_length =
377 * In order for the struct_size to fall on a 32-bit boundary,
378 * calculate the length of the string and expand the
379 * struct_size to the next 32-bit boundary.
381 temp8 = (u8) (index + 1);
382 struct_size += ACPI_ROUND_UP_to_32_bITS(temp8);
384 output_struct->data.address16.resource_source.index = 0;
385 output_struct->data.address16.resource_source.string_length = 0;
386 output_struct->data.address16.resource_source.string_ptr = NULL;
389 /* Set the Length parameter */
391 output_struct->length = (u32) struct_size;
393 /* Return the final size of the structure */
395 *structure_size = struct_size;
396 return_ACPI_STATUS(AE_OK);
399 /*******************************************************************************
401 * FUNCTION: acpi_rs_address16_stream
403 * PARAMETERS: linked_list - Pointer to the resource linked list
404 * output_buffer - Pointer to the user's return buffer
405 * bytes_consumed - Pointer to where the number of bytes
406 * used in the output_buffer is returned
410 * DESCRIPTION: Take the linked list resource structure and fills in the
411 * the appropriate bytes in a byte stream
413 ******************************************************************************/
416 acpi_rs_address16_stream(struct acpi_resource *linked_list,
417 u8 ** output_buffer, acpi_size * bytes_consumed)
419 u8 *buffer = *output_buffer;
421 acpi_size actual_bytes;
423 ACPI_FUNCTION_TRACE("rs_address16_stream");
425 /* Set the Descriptor Type field */
427 *buffer = ACPI_RDESC_TYPE_WORD_ADDRESS_SPACE;
430 /* Save a pointer to the Length field - to be filled in later */
432 length_field = buffer;
435 /* Set the Resource Type (Memory, Io, bus_number) */
437 *buffer = (u8) (linked_list->data.address16.resource_type & 0x03);
440 /* Set the general flags */
442 *buffer = acpi_rs_encode_general_flags(&linked_list->data);
445 /* Set the type specific flags */
447 *buffer = acpi_rs_encode_specific_flags(&linked_list->data);
450 /* Set the address space granularity */
452 ACPI_MOVE_32_TO_16(buffer, &linked_list->data.address16.granularity);
455 /* Set the address range minimum */
457 ACPI_MOVE_32_TO_16(buffer,
458 &linked_list->data.address16.min_address_range);
461 /* Set the address range maximum */
463 ACPI_MOVE_32_TO_16(buffer,
464 &linked_list->data.address16.max_address_range);
467 /* Set the address translation offset */
469 ACPI_MOVE_32_TO_16(buffer,
470 &linked_list->data.address16.
471 address_translation_offset);
474 /* Set the address length */
476 ACPI_MOVE_32_TO_16(buffer, &linked_list->data.address16.address_length);
479 /* Resource Source Index and Resource Source are optional */
481 if (linked_list->data.address16.resource_source.string_length) {
483 (u8) linked_list->data.address16.resource_source.index;
486 /* Copy the resource_source string */
488 ACPI_STRCPY((char *)buffer,
489 linked_list->data.address16.resource_source.
493 * Buffer needs to be set to the length of the string + one for the
497 (acpi_size) (ACPI_STRLEN
498 (linked_list->data.address16.resource_source.
502 /* Return the number of bytes consumed in this operation */
504 actual_bytes = ACPI_PTR_DIFF(buffer, *output_buffer);
505 *bytes_consumed = actual_bytes;
508 * Set the length field to the number of bytes consumed
509 * minus the header size (3 bytes)
512 ACPI_MOVE_SIZE_TO_16(length_field, &actual_bytes);
513 return_ACPI_STATUS(AE_OK);
516 /*******************************************************************************
518 * FUNCTION: acpi_rs_address32_resource
520 * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
522 * bytes_consumed - Pointer to where the number of bytes
523 * consumed the byte_stream_buffer is
525 * output_buffer - Pointer to the return data buffer
526 * structure_size - Pointer to where the number of bytes
527 * in the return data struct is returned
531 * DESCRIPTION: Take the resource byte stream and fill out the appropriate
532 * structure pointed to by the output_buffer. Return the
533 * number of bytes consumed from the byte stream.
535 ******************************************************************************/
538 acpi_rs_address32_resource(u8 * byte_stream_buffer,
539 acpi_size * bytes_consumed,
540 u8 ** output_buffer, acpi_size * structure_size)
546 u8 *buffer = byte_stream_buffer;
547 struct acpi_resource *output_struct = (void *)*output_buffer;
548 acpi_size struct_size =
549 ACPI_SIZEOF_RESOURCE(struct acpi_resource_address32);
551 ACPI_FUNCTION_TRACE("rs_address32_resource");
553 /* Get the Descriptor Length field */
556 ACPI_MOVE_16_TO_16(&temp16, buffer);
558 /* Validate minimum descriptor length */
561 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
564 *bytes_consumed = temp16 + 3;
565 output_struct->id = ACPI_RSTYPE_ADDRESS32;
567 /* Get the Resource Type (Byte3) */
572 /* Values 0-2 and 0xC0-0xFF are valid */
574 if ((temp8 > 2) && (temp8 < 0xC0)) {
575 return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
578 output_struct->data.address32.resource_type = temp8;
580 /* Get the General Flags (Byte4) */
583 acpi_rs_decode_general_flags(&output_struct->data, *buffer);
585 /* Get the Type Specific Flags (Byte5) */
588 acpi_rs_decode_specific_flags(&output_struct->data, *buffer);
590 /* Get Granularity (Bytes 6-9) */
593 ACPI_MOVE_32_TO_32(&output_struct->data.address32.granularity, buffer);
595 /* Get min_address_range (Bytes 10-13) */
598 ACPI_MOVE_32_TO_32(&output_struct->data.address32.min_address_range,
601 /* Get max_address_range (Bytes 14-17) */
604 ACPI_MOVE_32_TO_32(&output_struct->data.address32.max_address_range,
607 /* Get address_translation_offset (Bytes 18-21) */
610 ACPI_MOVE_32_TO_32(&output_struct->data.address32.
611 address_translation_offset, buffer);
613 /* Get address_length (Bytes 22-25) */
616 ACPI_MOVE_32_TO_32(&output_struct->data.address32.address_length,
619 /* Resource Source Index (if present) */
624 * This will leave us pointing to the Resource Source Index
625 * If it is present, then save it off and calculate the
626 * pointer to where the null terminated string goes:
628 * Note: Some resource descriptors will have an additional null, so
629 * we add 1 to the length.
631 if (*bytes_consumed > (26 + 1)) {
632 /* Dereference the Index */
634 output_struct->data.address32.resource_source.index =
637 /* Point to the String */
641 /* Point the String pointer to the end of this structure */
643 output_struct->data.address32.resource_source.string_ptr =
644 (char *)((u8 *) output_struct + struct_size);
647 output_struct->data.address32.resource_source.string_ptr;
649 /* Copy the resource_source string into the buffer */
660 /* Add the terminating null and set the string length */
663 output_struct->data.address32.resource_source.string_length =
667 * In order for the struct_size to fall on a 32-bit boundary,
668 * calculate the length of the string and expand the
669 * struct_size to the next 32-bit boundary.
671 temp8 = (u8) (index + 1);
672 struct_size += ACPI_ROUND_UP_to_32_bITS(temp8);
674 output_struct->data.address32.resource_source.index = 0;
675 output_struct->data.address32.resource_source.string_length = 0;
676 output_struct->data.address32.resource_source.string_ptr = NULL;
679 /* Set the Length parameter */
681 output_struct->length = (u32) struct_size;
683 /* Return the final size of the structure */
685 *structure_size = struct_size;
686 return_ACPI_STATUS(AE_OK);
689 /*******************************************************************************
691 * FUNCTION: acpi_rs_address32_stream
693 * PARAMETERS: linked_list - Pointer to the resource linked list
694 * output_buffer - Pointer to the user's return buffer
695 * bytes_consumed - Pointer to where the number of bytes
696 * used in the output_buffer is returned
700 * DESCRIPTION: Take the linked list resource structure and fills in the
701 * the appropriate bytes in a byte stream
703 ******************************************************************************/
706 acpi_rs_address32_stream(struct acpi_resource *linked_list,
707 u8 ** output_buffer, acpi_size * bytes_consumed)
712 ACPI_FUNCTION_TRACE("rs_address32_stream");
714 buffer = *output_buffer;
716 /* Set the Descriptor Type field */
718 *buffer = ACPI_RDESC_TYPE_DWORD_ADDRESS_SPACE;
721 /* Save a pointer to the Length field - to be filled in later */
723 length_field = ACPI_CAST_PTR(u16, buffer);
726 /* Set the Resource Type (Memory, Io, bus_number) */
728 *buffer = (u8) (linked_list->data.address32.resource_type & 0x03);
731 /* Set the general flags */
733 *buffer = acpi_rs_encode_general_flags(&linked_list->data);
736 /* Set the type specific flags */
738 *buffer = acpi_rs_encode_specific_flags(&linked_list->data);
741 /* Set the address space granularity */
743 ACPI_MOVE_32_TO_32(buffer, &linked_list->data.address32.granularity);
746 /* Set the address range minimum */
748 ACPI_MOVE_32_TO_32(buffer,
749 &linked_list->data.address32.min_address_range);
752 /* Set the address range maximum */
754 ACPI_MOVE_32_TO_32(buffer,
755 &linked_list->data.address32.max_address_range);
758 /* Set the address translation offset */
760 ACPI_MOVE_32_TO_32(buffer,
761 &linked_list->data.address32.
762 address_translation_offset);
765 /* Set the address length */
767 ACPI_MOVE_32_TO_32(buffer, &linked_list->data.address32.address_length);
770 /* Resource Source Index and Resource Source are optional */
772 if (linked_list->data.address32.resource_source.string_length) {
774 (u8) linked_list->data.address32.resource_source.index;
777 /* Copy the resource_source string */
779 ACPI_STRCPY((char *)buffer,
780 linked_list->data.address32.resource_source.
784 * Buffer needs to be set to the length of the string + one for the
788 (acpi_size) (ACPI_STRLEN
789 (linked_list->data.address32.resource_source.
793 /* Return the number of bytes consumed in this operation */
795 *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
798 * Set the length field to the number of bytes consumed
799 * minus the header size (3 bytes)
801 *length_field = (u16) (*bytes_consumed - 3);
802 return_ACPI_STATUS(AE_OK);
805 /*******************************************************************************
807 * FUNCTION: acpi_rs_address64_resource
809 * PARAMETERS: byte_stream_buffer - Pointer to the resource input byte
811 * bytes_consumed - Pointer to where the number of bytes
812 * consumed the byte_stream_buffer is
814 * output_buffer - Pointer to the return data buffer
815 * structure_size - Pointer to where the number of bytes
816 * in the return data struct is returned
820 * DESCRIPTION: Take the resource byte stream and fill out the appropriate
821 * structure pointed to by the output_buffer. Return the
822 * number of bytes consumed from the byte stream.
824 ******************************************************************************/
827 acpi_rs_address64_resource(u8 * byte_stream_buffer,
828 acpi_size * bytes_consumed,
829 u8 ** output_buffer, acpi_size * structure_size)
836 u8 *buffer = byte_stream_buffer;
837 struct acpi_resource *output_struct = (void *)*output_buffer;
838 acpi_size struct_size =
839 ACPI_SIZEOF_RESOURCE(struct acpi_resource_address64);
841 ACPI_FUNCTION_TRACE("rs_address64_resource");
843 /* Get the Descriptor Type */
845 resource_type = *buffer;
847 /* Get the Descriptor Length field */
850 ACPI_MOVE_16_TO_16(&temp16, buffer);
852 /* Validate minimum descriptor length */
855 return_ACPI_STATUS(AE_AML_BAD_RESOURCE_LENGTH);
858 *bytes_consumed = temp16 + 3;
859 output_struct->id = ACPI_RSTYPE_ADDRESS64;
861 /* Get the Resource Type (Byte3) */
866 /* Values 0-2 and 0xC0-0xFF are valid */
868 if ((temp8 > 2) && (temp8 < 0xC0)) {
869 return_ACPI_STATUS(AE_AML_INVALID_RESOURCE_TYPE);
872 output_struct->data.address64.resource_type = temp8;
874 /* Get the General Flags (Byte4) */
877 acpi_rs_decode_general_flags(&output_struct->data, *buffer);
879 /* Get the Type Specific Flags (Byte5) */
882 acpi_rs_decode_specific_flags(&output_struct->data, *buffer);
884 if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) {
885 /* Move past revision_id and Reserved byte */
890 /* Get Granularity (Bytes 6-13) or (Bytes 8-15) */
893 ACPI_MOVE_64_TO_64(&output_struct->data.address64.granularity, buffer);
895 /* Get min_address_range (Bytes 14-21) or (Bytes 16-23) */
898 ACPI_MOVE_64_TO_64(&output_struct->data.address64.min_address_range,
901 /* Get max_address_range (Bytes 22-29) or (Bytes 24-31) */
904 ACPI_MOVE_64_TO_64(&output_struct->data.address64.max_address_range,
907 /* Get address_translation_offset (Bytes 30-37) or (Bytes 32-39) */
910 ACPI_MOVE_64_TO_64(&output_struct->data.address64.
911 address_translation_offset, buffer);
913 /* Get address_length (Bytes 38-45) or (Bytes 40-47) */
916 ACPI_MOVE_64_TO_64(&output_struct->data.address64.address_length,
919 output_struct->data.address64.resource_source.index = 0;
920 output_struct->data.address64.resource_source.string_length = 0;
921 output_struct->data.address64.resource_source.string_ptr = NULL;
923 if (resource_type == ACPI_RDESC_TYPE_EXTENDED_ADDRESS_SPACE) {
924 /* Get type_specific_attribute (Bytes 48-55) */
927 ACPI_MOVE_64_TO_64(&output_struct->data.address64.
928 type_specific_attributes, buffer);
930 output_struct->data.address64.type_specific_attributes = 0;
932 /* Resource Source Index (if present) */
937 * This will leave us pointing to the Resource Source Index
938 * If it is present, then save it off and calculate the
939 * pointer to where the null terminated string goes:
940 * Each Interrupt takes 32-bits + the 5 bytes of the
941 * stream that are default.
943 * Note: Some resource descriptors will have an additional null, so
944 * we add 1 to the length.
946 if (*bytes_consumed > (46 + 1)) {
947 /* Dereference the Index */
949 output_struct->data.address64.resource_source.index =
952 /* Point to the String */
956 /* Point the String pointer to the end of this structure */
958 output_struct->data.address64.resource_source.
960 (char *)((u8 *) output_struct + struct_size);
963 output_struct->data.address64.resource_source.
966 /* Copy the resource_source string into the buffer */
978 * Add the terminating null and set the string length
981 output_struct->data.address64.resource_source.
982 string_length = index + 1;
985 * In order for the struct_size to fall on a 32-bit boundary,
986 * calculate the length of the string and expand the
987 * struct_size to the next 32-bit boundary.
989 temp8 = (u8) (index + 1);
990 struct_size += ACPI_ROUND_UP_to_32_bITS(temp8);
994 /* Set the Length parameter */
996 output_struct->length = (u32) struct_size;
998 /* Return the final size of the structure */
1000 *structure_size = struct_size;
1001 return_ACPI_STATUS(AE_OK);
1004 /*******************************************************************************
1006 * FUNCTION: acpi_rs_address64_stream
1008 * PARAMETERS: linked_list - Pointer to the resource linked list
1009 * output_buffer - Pointer to the user's return buffer
1010 * bytes_consumed - Pointer to where the number of bytes
1011 * used in the output_buffer is returned
1015 * DESCRIPTION: Take the linked list resource structure and fills in the
1016 * the appropriate bytes in a byte stream
1018 ******************************************************************************/
1021 acpi_rs_address64_stream(struct acpi_resource *linked_list,
1022 u8 ** output_buffer, acpi_size * bytes_consumed)
1027 ACPI_FUNCTION_TRACE("rs_address64_stream");
1029 buffer = *output_buffer;
1031 /* Set the Descriptor Type field */
1033 *buffer = ACPI_RDESC_TYPE_QWORD_ADDRESS_SPACE;
1036 /* Save a pointer to the Length field - to be filled in later */
1038 length_field = ACPI_CAST_PTR(u16, buffer);
1041 /* Set the Resource Type (Memory, Io, bus_number) */
1043 *buffer = (u8) (linked_list->data.address64.resource_type & 0x03);
1046 /* Set the general flags */
1048 *buffer = acpi_rs_encode_general_flags(&linked_list->data);
1051 /* Set the type specific flags */
1053 *buffer = acpi_rs_encode_specific_flags(&linked_list->data);
1056 /* Set the address space granularity */
1058 ACPI_MOVE_64_TO_64(buffer, &linked_list->data.address64.granularity);
1061 /* Set the address range minimum */
1063 ACPI_MOVE_64_TO_64(buffer,
1064 &linked_list->data.address64.min_address_range);
1067 /* Set the address range maximum */
1069 ACPI_MOVE_64_TO_64(buffer,
1070 &linked_list->data.address64.max_address_range);
1073 /* Set the address translation offset */
1075 ACPI_MOVE_64_TO_64(buffer,
1076 &linked_list->data.address64.
1077 address_translation_offset);
1080 /* Set the address length */
1082 ACPI_MOVE_64_TO_64(buffer, &linked_list->data.address64.address_length);
1085 /* Resource Source Index and Resource Source are optional */
1087 if (linked_list->data.address64.resource_source.string_length) {
1089 (u8) linked_list->data.address64.resource_source.index;
1092 /* Copy the resource_source string */
1094 ACPI_STRCPY((char *)buffer,
1095 linked_list->data.address64.resource_source.
1099 * Buffer needs to be set to the length of the string + one for the
1103 (acpi_size) (ACPI_STRLEN
1104 (linked_list->data.address64.resource_source.
1108 /* Return the number of bytes consumed in this operation */
1110 *bytes_consumed = ACPI_PTR_DIFF(buffer, *output_buffer);
1113 * Set the length field to the number of bytes consumed
1114 * minus the header size (3 bytes)
1116 *length_field = (u16) (*bytes_consumed - 3);
1117 return_ACPI_STATUS(AE_OK);