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- Kai Germaschewski: ISDN update (including Makefiles)
[davej-history.git] / drivers / acpi / resources / rsaddr.c
blobe48666113f97542c11f88f057419415d876b31bb
1 /*******************************************************************************
2 *
3 * Module Name: rsaddr - Acpi_rs_address16_resource
4 * Acpi_rs_address16_stream
5 * Acpi_rs_address32_resource
6 * Acpi_rs_address32_stream
7 * $Revision: 12 $
8 *
9 ******************************************************************************/
10
11 /*
12 * Copyright (C) 2000 R. Byron Moore
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 */
28
29
30 #include "acpi.h"
31 #include "acresrc.h"
32
33 #define _COMPONENT RESOURCE_MANAGER
34 MODULE_NAME ("rsaddr")
35
36
37 /*******************************************************************************
38 *
39 * FUNCTION: Acpi_rs_address16_resource
40 *
41 * PARAMETERS: Byte_stream_buffer - Pointer to the resource input byte
42 * stream
43 * Bytes_consumed - u32 pointer that is filled with
44 * the number of bytes consumed from
45 * the Byte_stream_buffer
46 * Output_buffer - Pointer to the user's return buffer
47 * Structure_size - u32 pointer that is filled with
48 * the number of bytes in the filled
49 * in structure
50 *
51 * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code
52 *
53 * DESCRIPTION: Take the resource byte stream and fill out the appropriate
54 * structure pointed to by the Output_buffer. Return the
55 * number of bytes consumed from the byte stream.
56 *
57 ******************************************************************************/
58
59 ACPI_STATUS
60 acpi_rs_address16_resource (
61 u8 *byte_stream_buffer,
62 u32 *bytes_consumed,
63 u8 **output_buffer,
64 u32 *structure_size)
65 {
66 u8 *buffer = byte_stream_buffer;
67 RESOURCE *output_struct = (RESOURCE *) * output_buffer;
68 u16 temp16;
69 u8 temp8;
70 u32 index;
71 u32 struct_size = sizeof(ADDRESS16_RESOURCE) +
72 RESOURCE_LENGTH_NO_DATA;
73
74
75 /*
76 * Point past the Descriptor to get the number of bytes consumed
77 */
78 buffer += 1;
79
80 MOVE_UNALIGNED16_TO_16 (&temp16, buffer);
81
82 *bytes_consumed = temp16 + 3;
83
84 output_struct->id = address16;
85
86 output_struct->length = struct_size;
87
88 /*
89 * Get the Resource Type (Byte3)
90 */
91 buffer += 2;
92 temp8 = *buffer;
93
94 /* Values 0-2 are valid */
95 if (temp8 > 2) {
96 return (AE_AML_ERROR);
97 }
98
99 output_struct->data.address16.resource_type = temp8 & 0x03;
100
101 /*
102 * Get the General Flags (Byte4)
103 */
104 buffer += 1;
105 temp8 = *buffer;
106
107 /*
108 * Producer / Consumer
109 */
110 output_struct->data.address16.producer_consumer = temp8 & 0x01;
111
112 /*
113 * Decode
114 */
115 output_struct->data.address16.decode = (temp8 >> 1) & 0x01;
116
117 /*
118 * Min Address Fixed
119 */
120 output_struct->data.address16.min_address_fixed = (temp8 >> 2) & 0x01;
121
122 /*
123 * Max Address Fixed
124 */
125 output_struct->data.address16.max_address_fixed = (temp8 >> 3) & 0x01;
126
127 /*
128 * Get the Type Specific Flags (Byte5)
129 */
130 buffer += 1;
131 temp8 = *buffer;
132
133 if (MEMORY_RANGE == output_struct->data.address16.resource_type) {
134 output_struct->data.address16.attribute.memory.read_write_attribute =
135 (u16) (temp8 & 0x01);
136 output_struct->data.address16.attribute.memory.cache_attribute =
137 (u16) ((temp8 >> 1) & 0x0F);
138 }
139
140 else {
141 if (IO_RANGE == output_struct->data.address16.resource_type) {
142 output_struct->data.address16.attribute.io.range_attribute =
143 (u16) (temp8 & 0x03);
144 }
145
146 else {
147 /* BUS_NUMBER_RANGE == Address32_data->Resource_type */
148 /* Nothing needs to be filled in */
149 }
150 }
151
152 /*
153 * Get Granularity (Bytes 6-7)
154 */
155 buffer += 1;
156 MOVE_UNALIGNED16_TO_16 (&output_struct->data.address16.granularity,
157 buffer);
158
159 /*
160 * Get Min_address_range (Bytes 8-9)
161 */
162 buffer += 2;
163 MOVE_UNALIGNED16_TO_16 (&output_struct->data.address16.min_address_range,
164 buffer);
165
166 /*
167 * Get Max_address_range (Bytes 10-11)
168 */
169 buffer += 2;
170 MOVE_UNALIGNED16_TO_16
171 (&output_struct->data.address16.max_address_range,
172 buffer);
173
174 /*
175 * Get Address_translation_offset (Bytes 12-13)
176 */
177 buffer += 2;
178 MOVE_UNALIGNED16_TO_16
179 (&output_struct->data.address16.address_translation_offset,
180 buffer);
181
182 /*
183 * Get Address_length (Bytes 14-15)
184 */
185 buffer += 2;
186 MOVE_UNALIGNED16_TO_16
187 (&output_struct->data.address16.address_length,
188 buffer);
189
190 /*
191 * Resource Source Index (if present)
192 */
193 buffer += 2;
194
195 /*
196 * This will leave us pointing to the Resource Source Index
197 * If it is present, then save it off and calculate the
198 * pointer to where the null terminated string goes:
199 * Each Interrupt takes 32-bits + the 5 bytes of the
200 * stream that are default.
201 */
202 if (*bytes_consumed > 16) {
203 /* Dereference the Index */
204
205 temp8 = *buffer;
206 output_struct->data.address16.resource_source_index =
207 (u32) temp8;
208
209 /* Point to the String */
210
211 buffer += 1;
212
213 /* Copy the string into the buffer */
214
215 index = 0;
216
217 while (0x00 != *buffer) {
218 output_struct->data.address16.resource_source[index] =
219 *buffer;
220
221 buffer += 1;
222 index += 1;
223 }
224
225 /*
226 * Add the terminating null
227 */
228 output_struct->data.address16.resource_source[index] = 0x00;
229
230 output_struct->data.address16.resource_source_string_length =
231 index + 1;
232
233 /*
234 * In order for the Struct_size to fall on a 32-bit boundry,
235 * calculate the length of the string and expand the
236 * Struct_size to the next 32-bit boundry.
237 */
238 temp8 = (u8) (index + 1);
239 struct_size += ROUND_UP_TO_32_bITS (temp8);
240 output_struct->length = struct_size;
241 }
242 else {
243 output_struct->data.address16.resource_source_index = 0x00;
244 output_struct->data.address16.resource_source_string_length = 0;
245 output_struct->data.address16.resource_source[0] = 0x00;
246 }
247
248 /*
249 * Return the final size of the structure
250 */
251 *structure_size = struct_size;
252
253 return (AE_OK);
254 }
255
256
257 /*******************************************************************************
258 *
259 * FUNCTION: Acpi_rs_address16_stream
260 *
261 * PARAMETERS: Linked_list - Pointer to the resource linked list
262 * Output_buffer - Pointer to the user's return buffer
263 * Bytes_consumed - u32 pointer that is filled with
264 * the number of bytes of the
265 * Output_buffer used
266 *
267 * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code
268 *
269 * DESCRIPTION: Take the linked list resource structure and fills in the
270 * the appropriate bytes in a byte stream
271 *
272 ******************************************************************************/
273
274 ACPI_STATUS
275 acpi_rs_address16_stream (
276 RESOURCE *linked_list,
277 u8 **output_buffer,
278 u32 *bytes_consumed)
279 {
280 u8 *buffer = *output_buffer;
281 u8 *length_field;
282 u8 temp8;
283 NATIVE_CHAR *temp_pointer = NULL;
284 u32 actual_bytes;
285
286
287 /*
288 * The descriptor field is static
289 */
290 *buffer = 0x88;
291 buffer += 1;
292
293 /*
294 * Save a pointer to the Length field - to be filled in later
295 */
296 length_field = buffer;
297 buffer += 2;
298
299 /*
300 * Set the Resource Type (Memory, Io, Bus_number)
301 */
302 temp8 = (u8) (linked_list->data.address16.resource_type & 0x03);
303 *buffer = temp8;
304 buffer += 1;
305
306 /*
307 * Set the general flags
308 */
309 temp8 = (u8) (linked_list->data.address16.producer_consumer & 0x01);
310
311 temp8 |= (linked_list->data.address16.decode & 0x01) << 1;
312 temp8 |= (linked_list->data.address16.min_address_fixed & 0x01) << 2;
313 temp8 |= (linked_list->data.address16.max_address_fixed & 0x01) << 3;
314
315 *buffer = temp8;
316 buffer += 1;
317
318 /*
319 * Set the type specific flags
320 */
321 temp8 = 0;
322
323 if (MEMORY_RANGE == linked_list->data.address16.resource_type) {
324 temp8 = (u8)
325 (linked_list->data.address16.attribute.memory.read_write_attribute &
326 0x01);
327
328 temp8 |=
329 (linked_list->data.address16.attribute.memory.cache_attribute &
330 0x0F) << 1;
331 }
332
333 else if (IO_RANGE == linked_list->data.address16.resource_type) {
334 temp8 = (u8)
335 (linked_list->data.address16.attribute.io.range_attribute &
336 0x03);
337 }
338
339 *buffer = temp8;
340 buffer += 1;
341
342 /*
343 * Set the address space granularity
344 */
345 MOVE_UNALIGNED16_TO_16 (buffer,
346 &linked_list->data.address16.granularity);
347 buffer += 2;
348
349 /*
350 * Set the address range minimum
351 */
352 MOVE_UNALIGNED16_TO_16 (buffer,
353 &linked_list->data.address16.min_address_range);
354 buffer += 2;
355
356 /*
357 * Set the address range maximum
358 */
359 MOVE_UNALIGNED16_TO_16 (buffer,
360 &linked_list->data.address16.max_address_range);
361 buffer += 2;
362
363 /*
364 * Set the address translation offset
365 */
366 MOVE_UNALIGNED16_TO_16 (buffer,
367 &linked_list->data.address16.address_translation_offset);
368 buffer += 2;
369
370 /*
371 * Set the address length
372 */
373 MOVE_UNALIGNED16_TO_16 (buffer,
374 &linked_list->data.address16.address_length);
375 buffer += 2;
376
377 /*
378 * Resource Source Index and Resource Source are optional
379 */
380 if (0 != linked_list->data.address16.resource_source_string_length) {
381 temp8 = (u8) linked_list->data.address16.resource_source_index;
382
383 *buffer = temp8;
384 buffer += 1;
385
386 temp_pointer = (NATIVE_CHAR *) buffer;
387
388 /*
389 * Copy the string
390 */
391 STRCPY (temp_pointer, linked_list->data.address16.resource_source);
392
393 /*
394 * Buffer needs to be set to the length of the sting + one for the
395 * terminating null
396 */
397 buffer += (STRLEN (linked_list->data.address16.resource_source) + 1);
398 }
399
400 /*
401 * Return the number of bytes consumed in this operation
402 */
403 actual_bytes = (u32) ((NATIVE_UINT) buffer -
404 (NATIVE_UINT) *output_buffer);
405
406 *bytes_consumed = actual_bytes;
407
408 /*
409 * Set the length field to the number of bytes consumed
410 * minus the header size (3 bytes)
411 */
412 actual_bytes -= 3;
413 MOVE_UNALIGNED16_TO_16 (length_field, &actual_bytes);
414
415 return (AE_OK);
416 }
417
418
419 /*******************************************************************************
420 *
421 * FUNCTION: Acpi_rs_address32_resource
422 *
423 * PARAMETERS: Byte_stream_buffer - Pointer to the resource input byte
424 * stream
425 * Bytes_consumed - u32 pointer that is filled with
426 * the number of bytes consumed from
427 * the Byte_stream_buffer
428 * Output_buffer - Pointer to the user's return buffer
429 * Structure_size - u32 pointer that is filled with
430 * the number of bytes in the filled
431 * in structure
432 *
433 * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code
434 *
435 * DESCRIPTION: Take the resource byte stream and fill out the appropriate
436 * structure pointed to by the Output_buffer. Return the
437 * number of bytes consumed from the byte stream.
438 *
439 ******************************************************************************/
440
441 ACPI_STATUS
442 acpi_rs_address32_resource (
443 u8 *byte_stream_buffer,
444 u32 *bytes_consumed,
445 u8 **output_buffer,
446 u32 *structure_size)
447 {
448 u8 *buffer;
449 RESOURCE *output_struct;
450 u16 temp16;
451 u8 temp8;
452 u32 struct_size;
453 u32 index;
454
455
456 buffer = byte_stream_buffer;
457
458 output_struct = (RESOURCE *) *output_buffer;
459
460 struct_size = sizeof (ADDRESS32_RESOURCE) +
461 RESOURCE_LENGTH_NO_DATA;
462
463 /*
464 * Point past the Descriptor to get the number of bytes consumed
465 */
466 buffer += 1;
467 MOVE_UNALIGNED16_TO_16 (&temp16, buffer);
468
469 *bytes_consumed = temp16 + 3;
470
471 output_struct->id = address32;
472
473 /*
474 * Get the Resource Type (Byte3)
475 */
476 buffer += 2;
477 temp8 = *buffer;
478
479 /* Values 0-2 are valid */
480 if(temp8 > 2) {
481 return (AE_AML_ERROR);
482 }
483
484 output_struct->data.address32.resource_type = temp8 & 0x03;
485
486 /*
487 * Get the General Flags (Byte4)
488 */
489 buffer += 1;
490 temp8 = *buffer;
491
492 /*
493 * Producer / Consumer
494 */
495 output_struct->data.address32.producer_consumer = temp8 & 0x01;
496
497 /*
498 * Decode
499 */
500 output_struct->data.address32.decode = (temp8 >> 1) & 0x01;
501
502 /*
503 * Min Address Fixed
504 */
505 output_struct->data.address32.min_address_fixed = (temp8 >> 2) & 0x01;
506
507 /*
508 * Max Address Fixed
509 */
510 output_struct->data.address32.max_address_fixed = (temp8 >> 3) & 0x01;
511
512 /*
513 * Get the Type Specific Flags (Byte5)
514 */
515 buffer += 1;
516 temp8 = *buffer;
517
518 if (MEMORY_RANGE == output_struct->data.address32.resource_type) {
519 output_struct->data.address32.attribute.memory.read_write_attribute =
520 (u16) (temp8 & 0x01);
521
522 output_struct->data.address32.attribute.memory.cache_attribute =
523 (u16) ((temp8 >> 1) & 0x0F);
524 }
525
526 else {
527 if (IO_RANGE == output_struct->data.address32.resource_type) {
528 output_struct->data.address32.attribute.io.range_attribute =
529 (u16) (temp8 & 0x03);
530 }
531
532 else {
533 /* BUS_NUMBER_RANGE == Output_struct->Data.Address32.Resource_type */
534 /* Nothing needs to be filled in */
535 }
536 }
537
538 /*
539 * Get Granularity (Bytes 6-9)
540 */
541 buffer += 1;
542 MOVE_UNALIGNED32_TO_32 (&output_struct->data.address32.granularity,
543 buffer);
544
545 /*
546 * Get Min_address_range (Bytes 10-13)
547 */
548 buffer += 4;
549 MOVE_UNALIGNED32_TO_32 (&output_struct->data.address32.min_address_range,
550 buffer);
551
552 /*
553 * Get Max_address_range (Bytes 14-17)
554 */
555 buffer += 4;
556 MOVE_UNALIGNED32_TO_32 (&output_struct->data.address32.max_address_range,
557 buffer);
558
559 /*
560 * Get Address_translation_offset (Bytes 18-21)
561 */
562 buffer += 4;
563 MOVE_UNALIGNED32_TO_32
564 (&output_struct->data.address32.address_translation_offset,
565 buffer);
566
567 /*
568 * Get Address_length (Bytes 22-25)
569 */
570 buffer += 4;
571 MOVE_UNALIGNED32_TO_32 (&output_struct->data.address32.address_length,
572 buffer);
573
574 /*
575 * Resource Source Index (if present)
576 */
577 buffer += 4;
578
579 /*
580 * This will leave us pointing to the Resource Source Index
581 * If it is present, then save it off and calculate the
582 * pointer to where the null terminated string goes:
583 * Each Interrupt takes 32-bits + the 5 bytes of the
584 * stream that are default.
585 */
586 if (*bytes_consumed > 26) {
587 /* Dereference the Index */
588
589 temp8 = *buffer;
590 output_struct->data.address32.resource_source_index = (u32)temp8;
591
592 /* Point to the String */
593
594 buffer += 1;
595
596 /* Copy the string into the buffer */
597
598 index = 0;
599
600 while (0x00 != *buffer) {
601 output_struct->data.address32.resource_source[index] = *buffer;
602 buffer += 1;
603 index += 1;
604 }
605
606 /*
607 * Add the terminating null
608 */
609 output_struct->data.address32.resource_source[index] = 0x00;
610
611 output_struct->data.address32.resource_source_string_length = index + 1;
612
613 /*
614 * In order for the Struct_size to fall on a 32-bit boundry,
615 * calculate the length of the string and expand the
616 * Struct_size to the next 32-bit boundry.
617 */
618 temp8 = (u8) (index + 1);
619 struct_size += ROUND_UP_TO_32_bITS (temp8);
620 }
621
622 else {
623 output_struct->data.address32.resource_source_index = 0x00;
624 output_struct->data.address32.resource_source_string_length = 0;
625 output_struct->data.address32.resource_source[0] = 0x00;
626 }
627
628 /*
629 * Set the Length parameter
630 */
631 output_struct->length = struct_size;
632
633 /*
634 * Return the final size of the structure
635 */
636 *structure_size = struct_size;
637
638 return (AE_OK);
639 }
640
641
642 /*******************************************************************************
643 *
644 * FUNCTION: Acpi_rs_address32_stream
645 *
646 * PARAMETERS: Linked_list - Pointer to the resource linked list
647 * Output_buffer - Pointer to the user's return buffer
648 * Bytes_consumed - u32 pointer that is filled with
649 * the number of bytes of the
650 * Output_buffer used
651 *
652 * RETURN: Status AE_OK if okay, else a valid ACPI_STATUS code
653 *
654 * DESCRIPTION: Take the linked list resource structure and fills in the
655 * the appropriate bytes in a byte stream
656 *
657 ******************************************************************************/
658
659 ACPI_STATUS
660 acpi_rs_address32_stream (
661 RESOURCE *linked_list,
662 u8 **output_buffer,
663 u32 *bytes_consumed)
664 {
665 u8 *buffer;
666 u16 *length_field;
667 u8 temp8;
668 NATIVE_CHAR *temp_pointer;
669
670
671 buffer = *output_buffer;
672
673 /*
674 * The descriptor field is static
675 */
676 *buffer = 0x87;
677 buffer += 1;
678
679 /*
680 * Set a pointer to the Length field - to be filled in later
681 */
682
683 length_field = (u16 *)buffer;
684 buffer += 2;
685
686 /*
687 * Set the Resource Type (Memory, Io, Bus_number)
688 */
689 temp8 = (u8) (linked_list->data.address32.resource_type & 0x03);
690
691 *buffer = temp8;
692 buffer += 1;
693
694 /*
695 * Set the general flags
696 */
697 temp8 = (u8) (linked_list->data.address32.producer_consumer & 0x01);
698 temp8 |= (linked_list->data.address32.decode & 0x01) << 1;
699 temp8 |= (linked_list->data.address32.min_address_fixed & 0x01) << 2;
700 temp8 |= (linked_list->data.address32.max_address_fixed & 0x01) << 3;
701
702 *buffer = temp8;
703 buffer += 1;
704
705 /*
706 * Set the type specific flags
707 */
708 temp8 = 0;
709
710 if(MEMORY_RANGE == linked_list->data.address32.resource_type) {
711 temp8 = (u8)
712 (linked_list->data.address32.attribute.memory.read_write_attribute &
713 0x01);
714
715 temp8 |=
716 (linked_list->data.address32.attribute.memory.cache_attribute &
717 0x0F) << 1;
718 }
719
720 else if (IO_RANGE == linked_list->data.address32.resource_type) {
721 temp8 = (u8)
722 (linked_list->data.address32.attribute.io.range_attribute &
723 0x03);
724 }
725
726 *buffer = temp8;
727 buffer += 1;
728
729 /*
730 * Set the address space granularity
731 */
732 MOVE_UNALIGNED32_TO_32 (buffer,
733 &linked_list->data.address32.granularity);
734 buffer += 4;
735
736 /*
737 * Set the address range minimum
738 */
739 MOVE_UNALIGNED32_TO_32 (buffer,
740 &linked_list->data.address32.min_address_range);
741 buffer += 4;
742
743 /*
744 * Set the address range maximum
745 */
746 MOVE_UNALIGNED32_TO_32 (buffer,
747 &linked_list->data.address32.max_address_range);
748 buffer += 4;
749
750 /*
751 * Set the address translation offset
752 */
753 MOVE_UNALIGNED32_TO_32 (buffer,
754 &linked_list->data.address32.address_translation_offset);
755 buffer += 4;
756
757 /*
758 * Set the address length
759 */
760 MOVE_UNALIGNED32_TO_32 (buffer,
761 &linked_list->data.address32.address_length);
762 buffer += 4;
763
764 /*
765 * Resource Source Index and Resource Source are optional
766 */
767 if (0 != linked_list->data.address32.resource_source_string_length) {
768 temp8 = (u8) linked_list->data.address32.resource_source_index;
769
770 *buffer = temp8;
771 buffer += 1;
772
773 temp_pointer = (NATIVE_CHAR *) buffer;
774
775 /*
776 * Copy the string
777 */
778 STRCPY (temp_pointer, linked_list->data.address32.resource_source);
779
780 /*
781 * Buffer needs to be set to the length of the sting + one for the
782 * terminating null
783 */
784 buffer += (STRLEN (linked_list->data.address32.resource_source) + 1);
785 }
786
787 /*
788 * Return the number of bytes consumed in this operation
789 */
790 *bytes_consumed = (u32) ((NATIVE_UINT) buffer -
791 (NATIVE_UINT) *output_buffer);
792
793 /*
794 * Set the length field to the number of bytes consumed
795 * minus the header size (3 bytes)
796 */
797 *length_field = (u16) (*bytes_consumed - 3);
798
799 return (AE_OK);
800 }
801
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