rsxface.c revision 91116 
1/*******************************************************************************
2 *
3 * Module Name: rsxface - Public interfaces to the resource manager
4 *              $Revision: 18 $
5 *
6 ******************************************************************************/
7
8/******************************************************************************
9 *
10 * 1. Copyright Notice
11 *
12 * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp.
13 * All rights reserved.
14 *
15 * 2. License
16 *
17 * 2.1. This is your license from Intel Corp. under its intellectual property
18 * rights.  You may have additional license terms from the party that provided
19 * you this software, covering your right to use that party's intellectual
20 * property rights.
21 *
22 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
23 * copy of the source code appearing in this file ("Covered Code") an
24 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
25 * base code distributed originally by Intel ("Original Intel Code") to copy,
26 * make derivatives, distribute, use and display any portion of the Covered
27 * Code in any form, with the right to sublicense such rights; and
28 *
29 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
30 * license (with the right to sublicense), under only those claims of Intel
31 * patents that are infringed by the Original Intel Code, to make, use, sell,
32 * offer to sell, and import the Covered Code and derivative works thereof
33 * solely to the minimum extent necessary to exercise the above copyright
34 * license, and in no event shall the patent license extend to any additions
35 * to or modifications of the Original Intel Code.  No other license or right
36 * is granted directly or by implication, estoppel or otherwise;
37 *
38 * The above copyright and patent license is granted only if the following
39 * conditions are met:
40 *
41 * 3. Conditions
42 *
43 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
44 * Redistribution of source code of any substantial portion of the Covered
45 * Code or modification with rights to further distribute source must include
46 * the above Copyright Notice, the above License, this list of Conditions,
47 * and the following Disclaimer and Export Compliance provision.  In addition,
48 * Licensee must cause all Covered Code to which Licensee contributes to
49 * contain a file documenting the changes Licensee made to create that Covered
50 * Code and the date of any change.  Licensee must include in that file the
51 * documentation of any changes made by any predecessor Licensee.  Licensee
52 * must include a prominent statement that the modification is derived,
53 * directly or indirectly, from Original Intel Code.
54 *
55 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
56 * Redistribution of source code of any substantial portion of the Covered
57 * Code or modification without rights to further distribute source must
58 * include the following Disclaimer and Export Compliance provision in the
59 * documentation and/or other materials provided with distribution.  In
60 * addition, Licensee may not authorize further sublicense of source of any
61 * portion of the Covered Code, and must include terms to the effect that the
62 * license from Licensee to its licensee is limited to the intellectual
63 * property embodied in the software Licensee provides to its licensee, and
64 * not to intellectual property embodied in modifications its licensee may
65 * make.
66 *
67 * 3.3. Redistribution of Executable. Redistribution in executable form of any
68 * substantial portion of the Covered Code or modification must reproduce the
69 * above Copyright Notice, and the following Disclaimer and Export Compliance
70 * provision in the documentation and/or other materials provided with the
71 * distribution.
72 *
73 * 3.4. Intel retains all right, title, and interest in and to the Original
74 * Intel Code.
75 *
76 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
77 * Intel shall be used in advertising or otherwise to promote the sale, use or
78 * other dealings in products derived from or relating to the Covered Code
79 * without prior written authorization from Intel.
80 *
81 * 4. Disclaimer and Export Compliance
82 *
83 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
84 * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
85 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
86 * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
87 * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
88 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
89 * PARTICULAR PURPOSE.
90 *
91 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
92 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
93 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
94 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
95 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
96 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
97 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
98 * LIMITED REMEDY.
99 *
100 * 4.3. Licensee shall not export, either directly or indirectly, any of this
101 * software or system incorporating such software without first obtaining any
102 * required license or other approval from the U. S. Department of Commerce or
103 * any other agency or department of the United States Government.  In the
104 * event Licensee exports any such software from the United States or
105 * re-exports any such software from a foreign destination, Licensee shall
106 * ensure that the distribution and export/re-export of the software is in
107 * compliance with all laws, regulations, orders, or other restrictions of the
108 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
109 * any of its subsidiaries will export/re-export any technical data, process,
110 * software, or service, directly or indirectly, to any country for which the
111 * United States government or any agency thereof requires an export license,
112 * other governmental approval, or letter of assurance, without first obtaining
113 * such license, approval or letter.
114 *
115 *****************************************************************************/
116
117
118#define __RSXFACE_C__
119
120#include "acpi.h"
121#include "acinterp.h"
122#include "acnamesp.h"
123#include "acresrc.h"
124
125#define _COMPONENT          ACPI_RESOURCES
126        ACPI_MODULE_NAME    ("rsxface")
127
128
129/*******************************************************************************
130 *
131 * FUNCTION:    AcpiGetIrqRoutingTable
132 *
133 * PARAMETERS:  DeviceHandle    - a handle to the Bus device we are querying
134 *              RetBuffer       - a pointer to a buffer to receive the
135 *                                current resources for the device
136 *
137 * RETURN:      Status
138 *
139 * DESCRIPTION: This function is called to get the IRQ routing table for a
140 *              specific bus.  The caller must first acquire a handle for the
141 *              desired bus.  The routine table is placed in the buffer pointed
142 *              to by the RetBuffer variable parameter.
143 *
144 *              If the function fails an appropriate status will be returned
145 *              and the value of RetBuffer is undefined.
146 *
147 *              This function attempts to execute the _PRT method contained in
148 *              the object indicated by the passed DeviceHandle.
149 *
150 ******************************************************************************/
151
152ACPI_STATUS
153AcpiGetIrqRoutingTable  (
154    ACPI_HANDLE             DeviceHandle,
155    ACPI_BUFFER             *RetBuffer)
156{
157    ACPI_STATUS             Status;
158
159
160    ACPI_FUNCTION_TRACE ("AcpiGetIrqRoutingTable ");
161
162
163    /*
164     * Must have a valid handle and buffer, So we have to have a handle
165     * and a return buffer structure, and if there is a non-zero buffer length
166     * we also need a valid pointer in the buffer. If it's a zero buffer length,
167     * we'll be returning the needed buffer size, so keep going.
168     */
169    if (!DeviceHandle)
170    {
171        return_ACPI_STATUS (AE_BAD_PARAMETER);
172    }
173
174    Status = AcpiUtValidateBuffer (RetBuffer);
175    if (ACPI_FAILURE (Status))
176    {
177        return_ACPI_STATUS (Status);
178    }
179
180    Status = AcpiRsGetPrtMethodData (DeviceHandle, RetBuffer);
181    return_ACPI_STATUS (Status);
182}
183
184
185/*******************************************************************************
186 *
187 * FUNCTION:    AcpiGetCurrentResources
188 *
189 * PARAMETERS:  DeviceHandle    - a handle to the device object for the
190 *                                device we are querying
191 *              RetBuffer       - a pointer to a buffer to receive the
192 *                                current resources for the device
193 *
194 * RETURN:      Status
195 *
196 * DESCRIPTION: This function is called to get the current resources for a
197 *              specific device.  The caller must first acquire a handle for
198 *              the desired device.  The resource data is placed in the buffer
199 *              pointed to by the RetBuffer variable parameter.
200 *
201 *              If the function fails an appropriate status will be returned
202 *              and the value of RetBuffer is undefined.
203 *
204 *              This function attempts to execute the _CRS method contained in
205 *              the object indicated by the passed DeviceHandle.
206 *
207 ******************************************************************************/
208
209ACPI_STATUS
210AcpiGetCurrentResources (
211    ACPI_HANDLE             DeviceHandle,
212    ACPI_BUFFER             *RetBuffer)
213{
214    ACPI_STATUS             Status;
215
216
217    ACPI_FUNCTION_TRACE ("AcpiGetCurrentResources");
218
219
220    /*
221     * Must have a valid handle and buffer, So we have to have a handle
222     * and a return buffer structure, and if there is a non-zero buffer length
223     * we also need a valid pointer in the buffer. If it's a zero buffer length,
224     * we'll be returning the needed buffer size, so keep going.
225     */
226    if (!DeviceHandle)
227    {
228        return_ACPI_STATUS (AE_BAD_PARAMETER);
229    }
230
231    Status = AcpiUtValidateBuffer (RetBuffer);
232    if (ACPI_FAILURE (Status))
233    {
234        return_ACPI_STATUS (Status);
235    }
236
237    Status = AcpiRsGetCrsMethodData (DeviceHandle, RetBuffer);
238    return_ACPI_STATUS (Status);
239}
240
241
242/*******************************************************************************
243 *
244 * FUNCTION:    AcpiGetPossibleResources
245 *
246 * PARAMETERS:  DeviceHandle    - a handle to the device object for the
247 *                                device we are querying
248 *              RetBuffer       - a pointer to a buffer to receive the
249 *                                resources for the device
250 *
251 * RETURN:      Status
252 *
253 * DESCRIPTION: This function is called to get a list of the possible resources
254 *              for a specific device.  The caller must first acquire a handle
255 *              for the desired device.  The resource data is placed in the
256 *              buffer pointed to by the RetBuffer variable.
257 *
258 *              If the function fails an appropriate status will be returned
259 *              and the value of RetBuffer is undefined.
260 *
261 ******************************************************************************/
262
263ACPI_STATUS
264AcpiGetPossibleResources (
265    ACPI_HANDLE             DeviceHandle,
266    ACPI_BUFFER             *RetBuffer)
267{
268    ACPI_STATUS             Status;
269
270
271    ACPI_FUNCTION_TRACE ("AcpiGetPossibleResources");
272
273
274    /*
275     * Must have a valid handle and buffer, So we have to have a handle
276     * and a return buffer structure, and if there is a non-zero buffer length
277     * we also need a valid pointer in the buffer. If it's a zero buffer length,
278     * we'll be returning the needed buffer size, so keep going.
279     */
280    if (!DeviceHandle)
281    {
282        return_ACPI_STATUS (AE_BAD_PARAMETER);
283    }
284
285    Status = AcpiUtValidateBuffer (RetBuffer);
286    if (ACPI_FAILURE (Status))
287    {
288        return_ACPI_STATUS (Status);
289    }
290
291    Status = AcpiRsGetPrsMethodData (DeviceHandle, RetBuffer);
292    return_ACPI_STATUS (Status);
293}
294
295
296/*******************************************************************************
297 *
298 * FUNCTION:    AcpiSetCurrentResources
299 *
300 * PARAMETERS:  DeviceHandle    - a handle to the device object for the
301 *                                device we are changing the resources of
302 *              InBuffer        - a pointer to a buffer containing the
303 *                                resources to be set for the device
304 *
305 * RETURN:      Status
306 *
307 * DESCRIPTION: This function is called to set the current resources for a
308 *              specific device.  The caller must first acquire a handle for
309 *              the desired device.  The resource data is passed to the routine
310 *              the buffer pointed to by the InBuffer variable.
311 *
312 ******************************************************************************/
313
314ACPI_STATUS
315AcpiSetCurrentResources (
316    ACPI_HANDLE             DeviceHandle,
317    ACPI_BUFFER             *InBuffer)
318{
319    ACPI_STATUS             Status;
320
321
322    ACPI_FUNCTION_TRACE ("AcpiSetCurrentResources");
323
324
325    /*
326     * Must have a valid handle and buffer
327     */
328    if ((!DeviceHandle)       ||
329        (!InBuffer)           ||
330        (!InBuffer->Pointer)  ||
331        (!InBuffer->Length))
332    {
333        return_ACPI_STATUS (AE_BAD_PARAMETER);
334    }
335
336    Status = AcpiRsSetSrsMethodData (DeviceHandle, InBuffer);
337    return_ACPI_STATUS (Status);
338}
339