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authorLen Brown <len.brown@intel.com>2009-01-09 00:13:17 -0500
committerLen Brown <len.brown@intel.com>2009-01-09 03:30:47 -0500
commit95b482a8d31116f3f5c2a5089569393234d06385 (patch)
treef32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/acpica/rsxface.c
parent6620e0c49f577454b772fb381543d60ae53eb885 (diff)
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/rsxface.c')
-rw-r--r--drivers/acpi/acpica/rsxface.c571
1 files changed, 571 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c
new file mode 100644
index 000000000000..0a274356b23e
--- /dev/null
+++ b/drivers/acpi/acpica/rsxface.c
@@ -0,0 +1,571 @@
1/*******************************************************************************
2 *
3 * Module Name: rsxface - Public interfaces to the resource manager
4 *
5 ******************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2008, Intel Corp.
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/accommon.h>
46#include <acpi/acresrc.h>
47#include <acpi/acnamesp.h>
48
49#define _COMPONENT ACPI_RESOURCES
50ACPI_MODULE_NAME("rsxface")
51
52/* Local macros for 16,32-bit to 64-bit conversion */
53#define ACPI_COPY_FIELD(out, in, field) ((out)->field = (in)->field)
54#define ACPI_COPY_ADDRESS(out, in) \
55 ACPI_COPY_FIELD(out, in, resource_type); \
56 ACPI_COPY_FIELD(out, in, producer_consumer); \
57 ACPI_COPY_FIELD(out, in, decode); \
58 ACPI_COPY_FIELD(out, in, min_address_fixed); \
59 ACPI_COPY_FIELD(out, in, max_address_fixed); \
60 ACPI_COPY_FIELD(out, in, info); \
61 ACPI_COPY_FIELD(out, in, granularity); \
62 ACPI_COPY_FIELD(out, in, minimum); \
63 ACPI_COPY_FIELD(out, in, maximum); \
64 ACPI_COPY_FIELD(out, in, translation_offset); \
65 ACPI_COPY_FIELD(out, in, address_length); \
66 ACPI_COPY_FIELD(out, in, resource_source);
67/* Local prototypes */
68static acpi_status
69acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context);
70
71static acpi_status
72acpi_rs_validate_parameters(acpi_handle device_handle,
73 struct acpi_buffer *buffer,
74 struct acpi_namespace_node **return_node);
75
76/*******************************************************************************
77 *
78 * FUNCTION: acpi_rs_validate_parameters
79 *
80 * PARAMETERS: device_handle - Handle to a device
81 * Buffer - Pointer to a data buffer
82 * return_node - Pointer to where the device node is returned
83 *
84 * RETURN: Status
85 *
86 * DESCRIPTION: Common parameter validation for resource interfaces
87 *
88 ******************************************************************************/
89
90static acpi_status
91acpi_rs_validate_parameters(acpi_handle device_handle,
92 struct acpi_buffer *buffer,
93 struct acpi_namespace_node **return_node)
94{
95 acpi_status status;
96 struct acpi_namespace_node *node;
97
98 ACPI_FUNCTION_TRACE(rs_validate_parameters);
99
100 /*
101 * Must have a valid handle to an ACPI device
102 */
103 if (!device_handle) {
104 return_ACPI_STATUS(AE_BAD_PARAMETER);
105 }
106
107 node = acpi_ns_map_handle_to_node(device_handle);
108 if (!node) {
109 return_ACPI_STATUS(AE_BAD_PARAMETER);
110 }
111
112 if (node->type != ACPI_TYPE_DEVICE) {
113 return_ACPI_STATUS(AE_TYPE);
114 }
115
116 /*
117 * Validate the user buffer object
118 *
119 * if there is a non-zero buffer length we also need a valid pointer in
120 * the buffer. If it's a zero buffer length, we'll be returning the
121 * needed buffer size (later), so keep going.
122 */
123 status = acpi_ut_validate_buffer(buffer);
124 if (ACPI_FAILURE(status)) {
125 return_ACPI_STATUS(status);
126 }
127
128 *return_node = node;
129 return_ACPI_STATUS(AE_OK);
130}
131
132/*******************************************************************************
133 *
134 * FUNCTION: acpi_get_irq_routing_table
135 *
136 * PARAMETERS: device_handle - Handle to the Bus device we are querying
137 * ret_buffer - Pointer to a buffer to receive the
138 * current resources for the device
139 *
140 * RETURN: Status
141 *
142 * DESCRIPTION: This function is called to get the IRQ routing table for a
143 * specific bus. The caller must first acquire a handle for the
144 * desired bus. The routine table is placed in the buffer pointed
145 * to by the ret_buffer variable parameter.
146 *
147 * If the function fails an appropriate status will be returned
148 * and the value of ret_buffer is undefined.
149 *
150 * This function attempts to execute the _PRT method contained in
151 * the object indicated by the passed device_handle.
152 *
153 ******************************************************************************/
154
155acpi_status
156acpi_get_irq_routing_table(acpi_handle device_handle,
157 struct acpi_buffer *ret_buffer)
158{
159 acpi_status status;
160 struct acpi_namespace_node *node;
161
162 ACPI_FUNCTION_TRACE(acpi_get_irq_routing_table);
163
164 /* Validate parameters then dispatch to internal routine */
165
166 status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
167 if (ACPI_FAILURE(status)) {
168 return_ACPI_STATUS(status);
169 }
170
171 status = acpi_rs_get_prt_method_data(node, ret_buffer);
172 return_ACPI_STATUS(status);
173}
174
175ACPI_EXPORT_SYMBOL(acpi_get_irq_routing_table)
176
177/*******************************************************************************
178 *
179 * FUNCTION: acpi_get_current_resources
180 *
181 * PARAMETERS: device_handle - Handle to the device object for the
182 * device we are querying
183 * ret_buffer - Pointer to a buffer to receive the
184 * current resources for the device
185 *
186 * RETURN: Status
187 *
188 * DESCRIPTION: This function is called to get the current resources for a
189 * specific device. The caller must first acquire a handle for
190 * the desired device. The resource data is placed in the buffer
191 * pointed to by the ret_buffer variable parameter.
192 *
193 * If the function fails an appropriate status will be returned
194 * and the value of ret_buffer is undefined.
195 *
196 * This function attempts to execute the _CRS method contained in
197 * the object indicated by the passed device_handle.
198 *
199 ******************************************************************************/
200acpi_status
201acpi_get_current_resources(acpi_handle device_handle,
202 struct acpi_buffer *ret_buffer)
203{
204 acpi_status status;
205 struct acpi_namespace_node *node;
206
207 ACPI_FUNCTION_TRACE(acpi_get_current_resources);
208
209 /* Validate parameters then dispatch to internal routine */
210
211 status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
212 if (ACPI_FAILURE(status)) {
213 return_ACPI_STATUS(status);
214 }
215
216 status = acpi_rs_get_crs_method_data(node, ret_buffer);
217 return_ACPI_STATUS(status);
218}
219
220ACPI_EXPORT_SYMBOL(acpi_get_current_resources)
221#ifdef ACPI_FUTURE_USAGE
222/*******************************************************************************
223 *
224 * FUNCTION: acpi_get_possible_resources
225 *
226 * PARAMETERS: device_handle - Handle to the device object for the
227 * device we are querying
228 * ret_buffer - Pointer to a buffer to receive the
229 * resources for the device
230 *
231 * RETURN: Status
232 *
233 * DESCRIPTION: This function is called to get a list of the possible resources
234 * for a specific device. The caller must first acquire a handle
235 * for the desired device. The resource data is placed in the
236 * buffer pointed to by the ret_buffer variable.
237 *
238 * If the function fails an appropriate status will be returned
239 * and the value of ret_buffer is undefined.
240 *
241 ******************************************************************************/
242acpi_status
243acpi_get_possible_resources(acpi_handle device_handle,
244 struct acpi_buffer *ret_buffer)
245{
246 acpi_status status;
247 struct acpi_namespace_node *node;
248
249 ACPI_FUNCTION_TRACE(acpi_get_possible_resources);
250
251 /* Validate parameters then dispatch to internal routine */
252
253 status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
254 if (ACPI_FAILURE(status)) {
255 return_ACPI_STATUS(status);
256 }
257
258 status = acpi_rs_get_prs_method_data(node, ret_buffer);
259 return_ACPI_STATUS(status);
260}
261
262ACPI_EXPORT_SYMBOL(acpi_get_possible_resources)
263#endif /* ACPI_FUTURE_USAGE */
264/*******************************************************************************
265 *
266 * FUNCTION: acpi_set_current_resources
267 *
268 * PARAMETERS: device_handle - Handle to the device object for the
269 * device we are setting resources
270 * in_buffer - Pointer to a buffer containing the
271 * resources to be set for the device
272 *
273 * RETURN: Status
274 *
275 * DESCRIPTION: This function is called to set the current resources for a
276 * specific device. The caller must first acquire a handle for
277 * the desired device. The resource data is passed to the routine
278 * the buffer pointed to by the in_buffer variable.
279 *
280 ******************************************************************************/
281acpi_status
282acpi_set_current_resources(acpi_handle device_handle,
283 struct acpi_buffer *in_buffer)
284{
285 acpi_status status;
286 struct acpi_namespace_node *node;
287
288 ACPI_FUNCTION_TRACE(acpi_set_current_resources);
289
290 /* Validate the buffer, don't allow zero length */
291
292 if ((!in_buffer) || (!in_buffer->pointer) || (!in_buffer->length)) {
293 return_ACPI_STATUS(AE_BAD_PARAMETER);
294 }
295
296 /* Validate parameters then dispatch to internal routine */
297
298 status = acpi_rs_validate_parameters(device_handle, in_buffer, &node);
299 if (ACPI_FAILURE(status)) {
300 return_ACPI_STATUS(status);
301 }
302
303 status = acpi_rs_set_srs_method_data(node, in_buffer);
304 return_ACPI_STATUS(status);
305}
306
307ACPI_EXPORT_SYMBOL(acpi_set_current_resources)
308
309/******************************************************************************
310 *
311 * FUNCTION: acpi_resource_to_address64
312 *
313 * PARAMETERS: Resource - Pointer to a resource
314 * Out - Pointer to the users's return buffer
315 * (a struct acpi_resource_address64)
316 *
317 * RETURN: Status
318 *
319 * DESCRIPTION: If the resource is an address16, address32, or address64,
320 * copy it to the address64 return buffer. This saves the
321 * caller from having to duplicate code for different-sized
322 * addresses.
323 *
324 ******************************************************************************/
325acpi_status
326acpi_resource_to_address64(struct acpi_resource *resource,
327 struct acpi_resource_address64 *out)
328{
329 struct acpi_resource_address16 *address16;
330 struct acpi_resource_address32 *address32;
331
332 if (!resource || !out) {
333 return (AE_BAD_PARAMETER);
334 }
335
336 /* Convert 16 or 32 address descriptor to 64 */
337
338 switch (resource->type) {
339 case ACPI_RESOURCE_TYPE_ADDRESS16:
340
341 address16 = (struct acpi_resource_address16 *)&resource->data;
342 ACPI_COPY_ADDRESS(out, address16);
343 break;
344
345 case ACPI_RESOURCE_TYPE_ADDRESS32:
346
347 address32 = (struct acpi_resource_address32 *)&resource->data;
348 ACPI_COPY_ADDRESS(out, address32);
349 break;
350
351 case ACPI_RESOURCE_TYPE_ADDRESS64:
352
353 /* Simple copy for 64 bit source */
354
355 ACPI_MEMCPY(out, &resource->data,
356 sizeof(struct acpi_resource_address64));
357 break;
358
359 default:
360 return (AE_BAD_PARAMETER);
361 }
362
363 return (AE_OK);
364}
365
366ACPI_EXPORT_SYMBOL(acpi_resource_to_address64)
367
368/*******************************************************************************
369 *
370 * FUNCTION: acpi_get_vendor_resource
371 *
372 * PARAMETERS: device_handle - Handle for the parent device object
373 * Name - Method name for the parent resource
374 * (METHOD_NAME__CRS or METHOD_NAME__PRS)
375 * Uuid - Pointer to the UUID to be matched.
376 * includes both subtype and 16-byte UUID
377 * ret_buffer - Where the vendor resource is returned
378 *
379 * RETURN: Status
380 *
381 * DESCRIPTION: Walk a resource template for the specified evice to find a
382 * vendor-defined resource that matches the supplied UUID and
383 * UUID subtype. Returns a struct acpi_resource of type Vendor.
384 *
385 ******************************************************************************/
386acpi_status
387acpi_get_vendor_resource(acpi_handle device_handle,
388 char *name,
389 struct acpi_vendor_uuid * uuid,
390 struct acpi_buffer * ret_buffer)
391{
392 struct acpi_vendor_walk_info info;
393 acpi_status status;
394
395 /* Other parameters are validated by acpi_walk_resources */
396
397 if (!uuid || !ret_buffer) {
398 return (AE_BAD_PARAMETER);
399 }
400
401 info.uuid = uuid;
402 info.buffer = ret_buffer;
403 info.status = AE_NOT_EXIST;
404
405 /* Walk the _CRS or _PRS resource list for this device */
406
407 status =
408 acpi_walk_resources(device_handle, name,
409 acpi_rs_match_vendor_resource, &info);
410 if (ACPI_FAILURE(status)) {
411 return (status);
412 }
413
414 return (info.status);
415}
416
417ACPI_EXPORT_SYMBOL(acpi_get_vendor_resource)
418
419/*******************************************************************************
420 *
421 * FUNCTION: acpi_rs_match_vendor_resource
422 *
423 * PARAMETERS: acpi_walk_resource_callback
424 *
425 * RETURN: Status
426 *
427 * DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID
428 *
429 ******************************************************************************/
430static acpi_status
431acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context)
432{
433 struct acpi_vendor_walk_info *info = context;
434 struct acpi_resource_vendor_typed *vendor;
435 struct acpi_buffer *buffer;
436 acpi_status status;
437
438 /* Ignore all descriptors except Vendor */
439
440 if (resource->type != ACPI_RESOURCE_TYPE_VENDOR) {
441 return (AE_OK);
442 }
443
444 vendor = &resource->data.vendor_typed;
445
446 /*
447 * For a valid match, these conditions must hold:
448 *
449 * 1) Length of descriptor data must be at least as long as a UUID struct
450 * 2) The UUID subtypes must match
451 * 3) The UUID data must match
452 */
453 if ((vendor->byte_length < (ACPI_UUID_LENGTH + 1)) ||
454 (vendor->uuid_subtype != info->uuid->subtype) ||
455 (ACPI_MEMCMP(vendor->uuid, info->uuid->data, ACPI_UUID_LENGTH))) {
456 return (AE_OK);
457 }
458
459 /* Validate/Allocate/Clear caller buffer */
460
461 buffer = info->buffer;
462 status = acpi_ut_initialize_buffer(buffer, resource->length);
463 if (ACPI_FAILURE(status)) {
464 return (status);
465 }
466
467 /* Found the correct resource, copy and return it */
468
469 ACPI_MEMCPY(buffer->pointer, resource, resource->length);
470 buffer->length = resource->length;
471
472 /* Found the desired descriptor, terminate resource walk */
473
474 info->status = AE_OK;
475 return (AE_CTRL_TERMINATE);
476}
477
478/*******************************************************************************
479 *
480 * FUNCTION: acpi_walk_resources
481 *
482 * PARAMETERS: device_handle - Handle to the device object for the
483 * device we are querying
484 * Name - Method name of the resources we want
485 * (METHOD_NAME__CRS or METHOD_NAME__PRS)
486 * user_function - Called for each resource
487 * Context - Passed to user_function
488 *
489 * RETURN: Status
490 *
491 * DESCRIPTION: Retrieves the current or possible resource list for the
492 * specified device. The user_function is called once for
493 * each resource in the list.
494 *
495 ******************************************************************************/
496acpi_status
497acpi_walk_resources(acpi_handle device_handle,
498 char *name,
499 acpi_walk_resource_callback user_function, void *context)
500{
501 acpi_status status;
502 struct acpi_buffer buffer;
503 struct acpi_resource *resource;
504 struct acpi_resource *resource_end;
505
506 ACPI_FUNCTION_TRACE(acpi_walk_resources);
507
508 /* Parameter validation */
509
510 if (!device_handle || !user_function || !name ||
511 (!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) &&
512 !ACPI_COMPARE_NAME(name, METHOD_NAME__PRS))) {
513 return_ACPI_STATUS(AE_BAD_PARAMETER);
514 }
515
516 /* Get the _CRS or _PRS resource list */
517
518 buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER;
519 status = acpi_rs_get_method_data(device_handle, name, &buffer);
520 if (ACPI_FAILURE(status)) {
521 return_ACPI_STATUS(status);
522 }
523
524 /* Buffer now contains the resource list */
525
526 resource = ACPI_CAST_PTR(struct acpi_resource, buffer.pointer);
527 resource_end =
528 ACPI_ADD_PTR(struct acpi_resource, buffer.pointer, buffer.length);
529
530 /* Walk the resource list until the end_tag is found (or buffer end) */
531
532 while (resource < resource_end) {
533
534 /* Sanity check the resource */
535
536 if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
537 status = AE_AML_INVALID_RESOURCE_TYPE;
538 break;
539 }
540
541 /* Invoke the user function, abort on any error returned */
542
543 status = user_function(resource, context);
544 if (ACPI_FAILURE(status)) {
545 if (status == AE_CTRL_TERMINATE) {
546
547 /* This is an OK termination by the user function */
548
549 status = AE_OK;
550 }
551 break;
552 }
553
554 /* end_tag indicates end-of-list */
555
556 if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
557 break;
558 }
559
560 /* Get the next resource descriptor */
561
562 resource =
563 ACPI_ADD_PTR(struct acpi_resource, resource,
564 resource->length);
565 }
566
567 ACPI_FREE(buffer.pointer);
568 return_ACPI_STATUS(status);
569}
570
571ACPI_EXPORT_SYMBOL(acpi_walk_resources)