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1da177e4 LT |
1 | /******************************************************************************* |
2 | * | |
3 | * Module Name: rsutils - Utilities for the resource manager | |
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 | ||
45 | #include <acpi/acpi.h> | |
46 | #include <acpi/acnamesp.h> | |
47 | #include <acpi/acresrc.h> | |
48 | ||
49 | ||
50 | #define _COMPONENT ACPI_RESOURCES | |
51 | ACPI_MODULE_NAME ("rsutils") | |
52 | ||
53 | ||
54 | /******************************************************************************* | |
55 | * | |
56 | * FUNCTION: acpi_rs_get_prt_method_data | |
57 | * | |
58 | * PARAMETERS: Handle - a handle to the containing object | |
59 | * ret_buffer - a pointer to a buffer structure for the | |
60 | * results | |
61 | * | |
62 | * RETURN: Status | |
63 | * | |
64 | * DESCRIPTION: This function is called to get the _PRT value of an object | |
65 | * contained in an object specified by the handle passed in | |
66 | * | |
67 | * If the function fails an appropriate status will be returned | |
68 | * and the contents of the callers buffer is undefined. | |
69 | * | |
70 | ******************************************************************************/ | |
71 | ||
72 | acpi_status | |
73 | acpi_rs_get_prt_method_data ( | |
74 | acpi_handle handle, | |
75 | struct acpi_buffer *ret_buffer) | |
76 | { | |
77 | union acpi_operand_object *obj_desc; | |
78 | acpi_status status; | |
79 | ||
80 | ||
81 | ACPI_FUNCTION_TRACE ("rs_get_prt_method_data"); | |
82 | ||
83 | ||
84 | /* Parameters guaranteed valid by caller */ | |
85 | ||
44f6c012 RM |
86 | /* Execute the method, no parameters */ |
87 | ||
88 | status = acpi_ut_evaluate_object (handle, METHOD_NAME__PRT, | |
89 | ACPI_BTYPE_PACKAGE, &obj_desc); | |
1da177e4 LT |
90 | if (ACPI_FAILURE (status)) { |
91 | return_ACPI_STATUS (status); | |
92 | } | |
93 | ||
94 | /* | |
95 | * Create a resource linked list from the byte stream buffer that comes | |
96 | * back from the _CRS method execution. | |
97 | */ | |
98 | status = acpi_rs_create_pci_routing_table (obj_desc, ret_buffer); | |
99 | ||
100 | /* On exit, we must delete the object returned by evaluate_object */ | |
101 | ||
102 | acpi_ut_remove_reference (obj_desc); | |
103 | return_ACPI_STATUS (status); | |
104 | } | |
105 | ||
106 | ||
107 | /******************************************************************************* | |
108 | * | |
109 | * FUNCTION: acpi_rs_get_crs_method_data | |
110 | * | |
111 | * PARAMETERS: Handle - a handle to the containing object | |
112 | * ret_buffer - a pointer to a buffer structure for the | |
113 | * results | |
114 | * | |
115 | * RETURN: Status | |
116 | * | |
117 | * DESCRIPTION: This function is called to get the _CRS value of an object | |
118 | * contained in an object specified by the handle passed in | |
119 | * | |
120 | * If the function fails an appropriate status will be returned | |
121 | * and the contents of the callers buffer is undefined. | |
122 | * | |
123 | ******************************************************************************/ | |
124 | ||
125 | acpi_status | |
126 | acpi_rs_get_crs_method_data ( | |
127 | acpi_handle handle, | |
128 | struct acpi_buffer *ret_buffer) | |
129 | { | |
130 | union acpi_operand_object *obj_desc; | |
131 | acpi_status status; | |
132 | ||
133 | ||
134 | ACPI_FUNCTION_TRACE ("rs_get_crs_method_data"); | |
135 | ||
136 | ||
137 | /* Parameters guaranteed valid by caller */ | |
138 | ||
44f6c012 RM |
139 | /* Execute the method, no parameters */ |
140 | ||
141 | status = acpi_ut_evaluate_object (handle, METHOD_NAME__CRS, | |
142 | ACPI_BTYPE_BUFFER, &obj_desc); | |
1da177e4 LT |
143 | if (ACPI_FAILURE (status)) { |
144 | return_ACPI_STATUS (status); | |
145 | } | |
146 | ||
147 | /* | |
148 | * Make the call to create a resource linked list from the | |
149 | * byte stream buffer that comes back from the _CRS method | |
150 | * execution. | |
151 | */ | |
152 | status = acpi_rs_create_resource_list (obj_desc, ret_buffer); | |
153 | ||
154 | /* on exit, we must delete the object returned by evaluate_object */ | |
155 | ||
156 | acpi_ut_remove_reference (obj_desc); | |
157 | return_ACPI_STATUS (status); | |
158 | } | |
159 | ||
160 | ||
161 | /******************************************************************************* | |
162 | * | |
163 | * FUNCTION: acpi_rs_get_prs_method_data | |
164 | * | |
165 | * PARAMETERS: Handle - a handle to the containing object | |
166 | * ret_buffer - a pointer to a buffer structure for the | |
167 | * results | |
168 | * | |
169 | * RETURN: Status | |
170 | * | |
171 | * DESCRIPTION: This function is called to get the _PRS value of an object | |
172 | * contained in an object specified by the handle passed in | |
173 | * | |
174 | * If the function fails an appropriate status will be returned | |
175 | * and the contents of the callers buffer is undefined. | |
176 | * | |
177 | ******************************************************************************/ | |
44f6c012 | 178 | |
1da177e4 LT |
179 | #ifdef ACPI_FUTURE_USAGE |
180 | acpi_status | |
181 | acpi_rs_get_prs_method_data ( | |
182 | acpi_handle handle, | |
183 | struct acpi_buffer *ret_buffer) | |
184 | { | |
185 | union acpi_operand_object *obj_desc; | |
186 | acpi_status status; | |
187 | ||
188 | ||
189 | ACPI_FUNCTION_TRACE ("rs_get_prs_method_data"); | |
190 | ||
191 | ||
192 | /* Parameters guaranteed valid by caller */ | |
193 | ||
44f6c012 RM |
194 | /* Execute the method, no parameters */ |
195 | ||
196 | status = acpi_ut_evaluate_object (handle, METHOD_NAME__PRS, | |
197 | ACPI_BTYPE_BUFFER, &obj_desc); | |
1da177e4 LT |
198 | if (ACPI_FAILURE (status)) { |
199 | return_ACPI_STATUS (status); | |
200 | } | |
201 | ||
202 | /* | |
203 | * Make the call to create a resource linked list from the | |
204 | * byte stream buffer that comes back from the _CRS method | |
205 | * execution. | |
206 | */ | |
207 | status = acpi_rs_create_resource_list (obj_desc, ret_buffer); | |
208 | ||
209 | /* on exit, we must delete the object returned by evaluate_object */ | |
210 | ||
211 | acpi_ut_remove_reference (obj_desc); | |
212 | return_ACPI_STATUS (status); | |
213 | } | |
214 | #endif /* ACPI_FUTURE_USAGE */ | |
215 | ||
216 | ||
217 | /******************************************************************************* | |
218 | * | |
219 | * FUNCTION: acpi_rs_get_method_data | |
220 | * | |
221 | * PARAMETERS: Handle - a handle to the containing object | |
44f6c012 | 222 | * Path - Path to method, relative to Handle |
1da177e4 LT |
223 | * ret_buffer - a pointer to a buffer structure for the |
224 | * results | |
225 | * | |
226 | * RETURN: Status | |
227 | * | |
228 | * DESCRIPTION: This function is called to get the _CRS or _PRS value of an | |
229 | * object contained in an object specified by the handle passed in | |
230 | * | |
231 | * If the function fails an appropriate status will be returned | |
232 | * and the contents of the callers buffer is undefined. | |
233 | * | |
234 | ******************************************************************************/ | |
235 | ||
236 | acpi_status | |
237 | acpi_rs_get_method_data ( | |
238 | acpi_handle handle, | |
239 | char *path, | |
240 | struct acpi_buffer *ret_buffer) | |
241 | { | |
242 | union acpi_operand_object *obj_desc; | |
243 | acpi_status status; | |
244 | ||
245 | ||
246 | ACPI_FUNCTION_TRACE ("rs_get_method_data"); | |
247 | ||
248 | ||
249 | /* Parameters guaranteed valid by caller */ | |
250 | ||
44f6c012 RM |
251 | /* Execute the method, no parameters */ |
252 | ||
1da177e4 LT |
253 | status = acpi_ut_evaluate_object (handle, path, ACPI_BTYPE_BUFFER, &obj_desc); |
254 | if (ACPI_FAILURE (status)) { | |
255 | return_ACPI_STATUS (status); | |
256 | } | |
257 | ||
258 | /* | |
259 | * Make the call to create a resource linked list from the | |
260 | * byte stream buffer that comes back from the method | |
261 | * execution. | |
262 | */ | |
263 | status = acpi_rs_create_resource_list (obj_desc, ret_buffer); | |
264 | ||
265 | /* On exit, we must delete the object returned by evaluate_object */ | |
266 | ||
267 | acpi_ut_remove_reference (obj_desc); | |
268 | return_ACPI_STATUS (status); | |
269 | } | |
270 | ||
271 | /******************************************************************************* | |
272 | * | |
273 | * FUNCTION: acpi_rs_set_srs_method_data | |
274 | * | |
275 | * PARAMETERS: Handle - a handle to the containing object | |
276 | * in_buffer - a pointer to a buffer structure of the | |
277 | * parameter | |
278 | * | |
279 | * RETURN: Status | |
280 | * | |
281 | * DESCRIPTION: This function is called to set the _SRS of an object contained | |
282 | * in an object specified by the handle passed in | |
283 | * | |
284 | * If the function fails an appropriate status will be returned | |
285 | * and the contents of the callers buffer is undefined. | |
286 | * | |
287 | ******************************************************************************/ | |
288 | ||
289 | acpi_status | |
290 | acpi_rs_set_srs_method_data ( | |
291 | acpi_handle handle, | |
292 | struct acpi_buffer *in_buffer) | |
293 | { | |
294 | struct acpi_parameter_info info; | |
295 | union acpi_operand_object *params[2]; | |
296 | acpi_status status; | |
297 | struct acpi_buffer buffer; | |
298 | ||
299 | ||
300 | ACPI_FUNCTION_TRACE ("rs_set_srs_method_data"); | |
301 | ||
302 | ||
303 | /* Parameters guaranteed valid by caller */ | |
304 | ||
305 | /* | |
306 | * The in_buffer parameter will point to a linked list of | |
307 | * resource parameters. It needs to be formatted into a | |
308 | * byte stream to be sent in as an input parameter to _SRS | |
309 | * | |
310 | * Convert the linked list into a byte stream | |
311 | */ | |
312 | buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; | |
313 | status = acpi_rs_create_byte_stream (in_buffer->pointer, &buffer); | |
314 | if (ACPI_FAILURE (status)) { | |
315 | return_ACPI_STATUS (status); | |
316 | } | |
317 | ||
44f6c012 RM |
318 | /* Init the param object */ |
319 | ||
1da177e4 LT |
320 | params[0] = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER); |
321 | if (!params[0]) { | |
322 | acpi_os_free (buffer.pointer); | |
323 | return_ACPI_STATUS (AE_NO_MEMORY); | |
324 | } | |
325 | ||
44f6c012 RM |
326 | /* Set up the parameter object */ |
327 | ||
1da177e4 LT |
328 | params[0]->buffer.length = (u32) buffer.length; |
329 | params[0]->buffer.pointer = buffer.pointer; | |
330 | params[0]->common.flags = AOPOBJ_DATA_VALID; | |
331 | params[1] = NULL; | |
332 | ||
333 | info.node = handle; | |
334 | info.parameters = params; | |
335 | info.parameter_type = ACPI_PARAM_ARGS; | |
336 | ||
44f6c012 RM |
337 | /* Execute the method, no return value */ |
338 | ||
339 | status = acpi_ns_evaluate_relative (METHOD_NAME__SRS, &info); | |
1da177e4 LT |
340 | if (ACPI_SUCCESS (status)) { |
341 | /* Delete any return object (especially if implicit_return is enabled) */ | |
342 | ||
343 | if (info.return_object) { | |
344 | acpi_ut_remove_reference (info.return_object); | |
345 | } | |
346 | } | |
347 | ||
44f6c012 RM |
348 | /* Clean up and return the status from acpi_ns_evaluate_relative */ |
349 | ||
1da177e4 LT |
350 | acpi_ut_remove_reference (params[0]); |
351 | return_ACPI_STATUS (status); | |
352 | } | |
353 |