diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/acpi/resources/rsutils.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/acpi/resources/rsutils.c')
-rw-r--r-- | drivers/acpi/resources/rsutils.c | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/drivers/acpi/resources/rsutils.c b/drivers/acpi/resources/rsutils.c new file mode 100644 index 000000000000..ee9ce13c053d --- /dev/null +++ b/drivers/acpi/resources/rsutils.c | |||
@@ -0,0 +1,356 @@ | |||
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 | |||
86 | /* | ||
87 | * Execute the method, no parameters | ||
88 | */ | ||
89 | status = acpi_ut_evaluate_object (handle, "_PRT", ACPI_BTYPE_PACKAGE, &obj_desc); | ||
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 | |||
139 | /* | ||
140 | * Execute the method, no parameters | ||
141 | */ | ||
142 | status = acpi_ut_evaluate_object (handle, "_CRS", ACPI_BTYPE_BUFFER, &obj_desc); | ||
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 | ******************************************************************************/ | ||
178 | #ifdef ACPI_FUTURE_USAGE | ||
179 | acpi_status | ||
180 | acpi_rs_get_prs_method_data ( | ||
181 | acpi_handle handle, | ||
182 | struct acpi_buffer *ret_buffer) | ||
183 | { | ||
184 | union acpi_operand_object *obj_desc; | ||
185 | acpi_status status; | ||
186 | |||
187 | |||
188 | ACPI_FUNCTION_TRACE ("rs_get_prs_method_data"); | ||
189 | |||
190 | |||
191 | /* Parameters guaranteed valid by caller */ | ||
192 | |||
193 | /* | ||
194 | * Execute the method, no parameters | ||
195 | */ | ||
196 | status = acpi_ut_evaluate_object (handle, "_PRS", ACPI_BTYPE_BUFFER, &obj_desc); | ||
197 | if (ACPI_FAILURE (status)) { | ||
198 | return_ACPI_STATUS (status); | ||
199 | } | ||
200 | |||
201 | /* | ||
202 | * Make the call to create a resource linked list from the | ||
203 | * byte stream buffer that comes back from the _CRS method | ||
204 | * execution. | ||
205 | */ | ||
206 | status = acpi_rs_create_resource_list (obj_desc, ret_buffer); | ||
207 | |||
208 | /* on exit, we must delete the object returned by evaluate_object */ | ||
209 | |||
210 | acpi_ut_remove_reference (obj_desc); | ||
211 | return_ACPI_STATUS (status); | ||
212 | } | ||
213 | #endif /* ACPI_FUTURE_USAGE */ | ||
214 | |||
215 | |||
216 | /******************************************************************************* | ||
217 | * | ||
218 | * FUNCTION: acpi_rs_get_method_data | ||
219 | * | ||
220 | * PARAMETERS: Handle - a handle to the containing object | ||
221 | * ret_buffer - a pointer to a buffer structure for the | ||
222 | * results | ||
223 | * | ||
224 | * RETURN: Status | ||
225 | * | ||
226 | * DESCRIPTION: This function is called to get the _CRS or _PRS value of an | ||
227 | * object contained in an object specified by the handle passed in | ||
228 | * | ||
229 | * If the function fails an appropriate status will be returned | ||
230 | * and the contents of the callers buffer is undefined. | ||
231 | * | ||
232 | ******************************************************************************/ | ||
233 | |||
234 | acpi_status | ||
235 | acpi_rs_get_method_data ( | ||
236 | acpi_handle handle, | ||
237 | char *path, | ||
238 | struct acpi_buffer *ret_buffer) | ||
239 | { | ||
240 | union acpi_operand_object *obj_desc; | ||
241 | acpi_status status; | ||
242 | |||
243 | |||
244 | ACPI_FUNCTION_TRACE ("rs_get_method_data"); | ||
245 | |||
246 | |||
247 | /* Parameters guaranteed valid by caller */ | ||
248 | |||
249 | /* | ||
250 | * Execute the method, no parameters | ||
251 | */ | ||
252 | status = acpi_ut_evaluate_object (handle, path, ACPI_BTYPE_BUFFER, &obj_desc); | ||
253 | if (ACPI_FAILURE (status)) { | ||
254 | return_ACPI_STATUS (status); | ||
255 | } | ||
256 | |||
257 | /* | ||
258 | * Make the call to create a resource linked list from the | ||
259 | * byte stream buffer that comes back from the method | ||
260 | * execution. | ||
261 | */ | ||
262 | status = acpi_rs_create_resource_list (obj_desc, ret_buffer); | ||
263 | |||
264 | /* On exit, we must delete the object returned by evaluate_object */ | ||
265 | |||
266 | acpi_ut_remove_reference (obj_desc); | ||
267 | return_ACPI_STATUS (status); | ||
268 | } | ||
269 | |||
270 | /******************************************************************************* | ||
271 | * | ||
272 | * FUNCTION: acpi_rs_set_srs_method_data | ||
273 | * | ||
274 | * PARAMETERS: Handle - a handle to the containing object | ||
275 | * in_buffer - a pointer to a buffer structure of the | ||
276 | * parameter | ||
277 | * | ||
278 | * RETURN: Status | ||
279 | * | ||
280 | * DESCRIPTION: This function is called to set the _SRS of an object contained | ||
281 | * in an object specified by the handle passed in | ||
282 | * | ||
283 | * If the function fails an appropriate status will be returned | ||
284 | * and the contents of the callers buffer is undefined. | ||
285 | * | ||
286 | ******************************************************************************/ | ||
287 | |||
288 | acpi_status | ||
289 | acpi_rs_set_srs_method_data ( | ||
290 | acpi_handle handle, | ||
291 | struct acpi_buffer *in_buffer) | ||
292 | { | ||
293 | struct acpi_parameter_info info; | ||
294 | union acpi_operand_object *params[2]; | ||
295 | acpi_status status; | ||
296 | struct acpi_buffer buffer; | ||
297 | |||
298 | |||
299 | ACPI_FUNCTION_TRACE ("rs_set_srs_method_data"); | ||
300 | |||
301 | |||
302 | /* Parameters guaranteed valid by caller */ | ||
303 | |||
304 | /* | ||
305 | * The in_buffer parameter will point to a linked list of | ||
306 | * resource parameters. It needs to be formatted into a | ||
307 | * byte stream to be sent in as an input parameter to _SRS | ||
308 | * | ||
309 | * Convert the linked list into a byte stream | ||
310 | */ | ||
311 | buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; | ||
312 | status = acpi_rs_create_byte_stream (in_buffer->pointer, &buffer); | ||
313 | if (ACPI_FAILURE (status)) { | ||
314 | return_ACPI_STATUS (status); | ||
315 | } | ||
316 | |||
317 | /* | ||
318 | * Init the param object | ||
319 | */ | ||
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 | |||
326 | /* | ||
327 | * Set up the parameter object | ||
328 | */ | ||
329 | params[0]->buffer.length = (u32) buffer.length; | ||
330 | params[0]->buffer.pointer = buffer.pointer; | ||
331 | params[0]->common.flags = AOPOBJ_DATA_VALID; | ||
332 | params[1] = NULL; | ||
333 | |||
334 | info.node = handle; | ||
335 | info.parameters = params; | ||
336 | info.parameter_type = ACPI_PARAM_ARGS; | ||
337 | |||
338 | /* | ||
339 | * Execute the method, no return value | ||
340 | */ | ||
341 | status = acpi_ns_evaluate_relative ("_SRS", &info); | ||
342 | if (ACPI_SUCCESS (status)) { | ||
343 | /* Delete any return object (especially if implicit_return is enabled) */ | ||
344 | |||
345 | if (info.return_object) { | ||
346 | acpi_ut_remove_reference (info.return_object); | ||
347 | } | ||
348 | } | ||
349 | |||
350 | /* | ||
351 | * Clean up and return the status from acpi_ns_evaluate_relative | ||
352 | */ | ||
353 | acpi_ut_remove_reference (params[0]); | ||
354 | return_ACPI_STATUS (status); | ||
355 | } | ||
356 | |||