1bc36eafdSMike Gerdts /*******************************************************************************
2bc36eafdSMike Gerdts *
3bc36eafdSMike Gerdts * Module Name: utownerid - Support for Table/Method Owner IDs
4bc36eafdSMike Gerdts *
5bc36eafdSMike Gerdts ******************************************************************************/
6bc36eafdSMike Gerdts
7*35786f68SRobert Mustacchi /******************************************************************************
8*35786f68SRobert Mustacchi *
9*35786f68SRobert Mustacchi * 1. Copyright Notice
10*35786f68SRobert Mustacchi *
11*35786f68SRobert Mustacchi * Some or all of this work - Copyright (c) 1999 - 2018, Intel Corp.
12bc36eafdSMike Gerdts * All rights reserved.
13bc36eafdSMike Gerdts *
14*35786f68SRobert Mustacchi * 2. License
15*35786f68SRobert Mustacchi *
16*35786f68SRobert Mustacchi * 2.1. This is your license from Intel Corp. under its intellectual property
17*35786f68SRobert Mustacchi * rights. You may have additional license terms from the party that provided
18*35786f68SRobert Mustacchi * you this software, covering your right to use that party's intellectual
19*35786f68SRobert Mustacchi * property rights.
20*35786f68SRobert Mustacchi *
21*35786f68SRobert Mustacchi * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22*35786f68SRobert Mustacchi * copy of the source code appearing in this file ("Covered Code") an
23*35786f68SRobert Mustacchi * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24*35786f68SRobert Mustacchi * base code distributed originally by Intel ("Original Intel Code") to copy,
25*35786f68SRobert Mustacchi * make derivatives, distribute, use and display any portion of the Covered
26*35786f68SRobert Mustacchi * Code in any form, with the right to sublicense such rights; and
27*35786f68SRobert Mustacchi *
28*35786f68SRobert Mustacchi * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29*35786f68SRobert Mustacchi * license (with the right to sublicense), under only those claims of Intel
30*35786f68SRobert Mustacchi * patents that are infringed by the Original Intel Code, to make, use, sell,
31*35786f68SRobert Mustacchi * offer to sell, and import the Covered Code and derivative works thereof
32*35786f68SRobert Mustacchi * solely to the minimum extent necessary to exercise the above copyright
33*35786f68SRobert Mustacchi * license, and in no event shall the patent license extend to any additions
34*35786f68SRobert Mustacchi * to or modifications of the Original Intel Code. No other license or right
35*35786f68SRobert Mustacchi * is granted directly or by implication, estoppel or otherwise;
36*35786f68SRobert Mustacchi *
37*35786f68SRobert Mustacchi * The above copyright and patent license is granted only if the following
38*35786f68SRobert Mustacchi * conditions are met:
39*35786f68SRobert Mustacchi *
40*35786f68SRobert Mustacchi * 3. Conditions
41*35786f68SRobert Mustacchi *
42*35786f68SRobert Mustacchi * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
44*35786f68SRobert Mustacchi * Code or modification with rights to further distribute source must include
45*35786f68SRobert Mustacchi * the above Copyright Notice, the above License, this list of Conditions,
46*35786f68SRobert Mustacchi * and the following Disclaimer and Export Compliance provision. In addition,
47*35786f68SRobert Mustacchi * Licensee must cause all Covered Code to which Licensee contributes to
48*35786f68SRobert Mustacchi * contain a file documenting the changes Licensee made to create that Covered
49*35786f68SRobert Mustacchi * Code and the date of any change. Licensee must include in that file the
50*35786f68SRobert Mustacchi * documentation of any changes made by any predecessor Licensee. Licensee
51*35786f68SRobert Mustacchi * must include a prominent statement that the modification is derived,
52*35786f68SRobert Mustacchi * directly or indirectly, from Original Intel Code.
53*35786f68SRobert Mustacchi *
54*35786f68SRobert Mustacchi * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55*35786f68SRobert Mustacchi * Redistribution of source code of any substantial portion of the Covered
56*35786f68SRobert Mustacchi * Code or modification without rights to further distribute source must
57*35786f68SRobert Mustacchi * include the following Disclaimer and Export Compliance provision in the
58*35786f68SRobert Mustacchi * documentation and/or other materials provided with distribution. In
59*35786f68SRobert Mustacchi * addition, Licensee may not authorize further sublicense of source of any
60*35786f68SRobert Mustacchi * portion of the Covered Code, and must include terms to the effect that the
61*35786f68SRobert Mustacchi * license from Licensee to its licensee is limited to the intellectual
62*35786f68SRobert Mustacchi * property embodied in the software Licensee provides to its licensee, and
63*35786f68SRobert Mustacchi * not to intellectual property embodied in modifications its licensee may
64*35786f68SRobert Mustacchi * make.
65*35786f68SRobert Mustacchi *
66*35786f68SRobert Mustacchi * 3.3. Redistribution of Executable. Redistribution in executable form of any
67*35786f68SRobert Mustacchi * substantial portion of the Covered Code or modification must reproduce the
68*35786f68SRobert Mustacchi * above Copyright Notice, and the following Disclaimer and Export Compliance
69*35786f68SRobert Mustacchi * provision in the documentation and/or other materials provided with the
70*35786f68SRobert Mustacchi * distribution.
71*35786f68SRobert Mustacchi *
72*35786f68SRobert Mustacchi * 3.4. Intel retains all right, title, and interest in and to the Original
73*35786f68SRobert Mustacchi * Intel Code.
74*35786f68SRobert Mustacchi *
75*35786f68SRobert Mustacchi * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76*35786f68SRobert Mustacchi * Intel shall be used in advertising or otherwise to promote the sale, use or
77*35786f68SRobert Mustacchi * other dealings in products derived from or relating to the Covered Code
78*35786f68SRobert Mustacchi * without prior written authorization from Intel.
79*35786f68SRobert Mustacchi *
80*35786f68SRobert Mustacchi * 4. Disclaimer and Export Compliance
81*35786f68SRobert Mustacchi *
82*35786f68SRobert Mustacchi * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83*35786f68SRobert Mustacchi * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84*35786f68SRobert Mustacchi * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85*35786f68SRobert Mustacchi * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86*35786f68SRobert Mustacchi * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87*35786f68SRobert Mustacchi * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
88*35786f68SRobert Mustacchi * PARTICULAR PURPOSE.
89*35786f68SRobert Mustacchi *
90*35786f68SRobert Mustacchi * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91*35786f68SRobert Mustacchi * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92*35786f68SRobert Mustacchi * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93*35786f68SRobert Mustacchi * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94*35786f68SRobert Mustacchi * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95*35786f68SRobert Mustacchi * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96*35786f68SRobert Mustacchi * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
97*35786f68SRobert Mustacchi * LIMITED REMEDY.
98*35786f68SRobert Mustacchi *
99*35786f68SRobert Mustacchi * 4.3. Licensee shall not export, either directly or indirectly, any of this
100*35786f68SRobert Mustacchi * software or system incorporating such software without first obtaining any
101*35786f68SRobert Mustacchi * required license or other approval from the U. S. Department of Commerce or
102*35786f68SRobert Mustacchi * any other agency or department of the United States Government. In the
103*35786f68SRobert Mustacchi * event Licensee exports any such software from the United States or
104*35786f68SRobert Mustacchi * re-exports any such software from a foreign destination, Licensee shall
105*35786f68SRobert Mustacchi * ensure that the distribution and export/re-export of the software is in
106*35786f68SRobert Mustacchi * compliance with all laws, regulations, orders, or other restrictions of the
107*35786f68SRobert Mustacchi * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108*35786f68SRobert Mustacchi * any of its subsidiaries will export/re-export any technical data, process,
109*35786f68SRobert Mustacchi * software, or service, directly or indirectly, to any country for which the
110*35786f68SRobert Mustacchi * United States government or any agency thereof requires an export license,
111*35786f68SRobert Mustacchi * other governmental approval, or letter of assurance, without first obtaining
112*35786f68SRobert Mustacchi * such license, approval or letter.
113*35786f68SRobert Mustacchi *
114*35786f68SRobert Mustacchi *****************************************************************************
115*35786f68SRobert Mustacchi *
116*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
117*35786f68SRobert Mustacchi * following license:
118*35786f68SRobert Mustacchi *
119bc36eafdSMike Gerdts * Redistribution and use in source and binary forms, with or without
120bc36eafdSMike Gerdts * modification, are permitted provided that the following conditions
121bc36eafdSMike Gerdts * are met:
122bc36eafdSMike Gerdts * 1. Redistributions of source code must retain the above copyright
123bc36eafdSMike Gerdts * notice, this list of conditions, and the following disclaimer,
124bc36eafdSMike Gerdts * without modification.
125bc36eafdSMike Gerdts * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126bc36eafdSMike Gerdts * substantially similar to the "NO WARRANTY" disclaimer below
127bc36eafdSMike Gerdts * ("Disclaimer") and any redistribution must be conditioned upon
128bc36eafdSMike Gerdts * including a substantially similar Disclaimer requirement for further
129bc36eafdSMike Gerdts * binary redistribution.
130bc36eafdSMike Gerdts * 3. Neither the names of the above-listed copyright holders nor the names
131bc36eafdSMike Gerdts * of any contributors may be used to endorse or promote products derived
132bc36eafdSMike Gerdts * from this software without specific prior written permission.
133bc36eafdSMike Gerdts *
134*35786f68SRobert Mustacchi * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135*35786f68SRobert Mustacchi * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136*35786f68SRobert Mustacchi * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137*35786f68SRobert Mustacchi * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138*35786f68SRobert Mustacchi * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139*35786f68SRobert Mustacchi * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140*35786f68SRobert Mustacchi * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141*35786f68SRobert Mustacchi * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142*35786f68SRobert Mustacchi * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143*35786f68SRobert Mustacchi * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144*35786f68SRobert Mustacchi * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
145*35786f68SRobert Mustacchi *
146*35786f68SRobert Mustacchi * Alternatively, you may choose to be licensed under the terms of the
147bc36eafdSMike Gerdts * GNU General Public License ("GPL") version 2 as published by the Free
148bc36eafdSMike Gerdts * Software Foundation.
149bc36eafdSMike Gerdts *
150*35786f68SRobert Mustacchi *****************************************************************************/
151bc36eafdSMike Gerdts
152bc36eafdSMike Gerdts #include "acpi.h"
153bc36eafdSMike Gerdts #include "accommon.h"
154bc36eafdSMike Gerdts #include "acnamesp.h"
155bc36eafdSMike Gerdts
156bc36eafdSMike Gerdts
157bc36eafdSMike Gerdts #define _COMPONENT ACPI_UTILITIES
158bc36eafdSMike Gerdts ACPI_MODULE_NAME ("utownerid")
159bc36eafdSMike Gerdts
160bc36eafdSMike Gerdts
161bc36eafdSMike Gerdts /*******************************************************************************
162bc36eafdSMike Gerdts *
163bc36eafdSMike Gerdts * FUNCTION: AcpiUtAllocateOwnerId
164bc36eafdSMike Gerdts *
165bc36eafdSMike Gerdts * PARAMETERS: OwnerId - Where the new owner ID is returned
166bc36eafdSMike Gerdts *
167bc36eafdSMike Gerdts * RETURN: Status
168bc36eafdSMike Gerdts *
169bc36eafdSMike Gerdts * DESCRIPTION: Allocate a table or method owner ID. The owner ID is used to
170bc36eafdSMike Gerdts * track objects created by the table or method, to be deleted
171bc36eafdSMike Gerdts * when the method exits or the table is unloaded.
172bc36eafdSMike Gerdts *
173bc36eafdSMike Gerdts ******************************************************************************/
174bc36eafdSMike Gerdts
175bc36eafdSMike Gerdts ACPI_STATUS
AcpiUtAllocateOwnerId(ACPI_OWNER_ID * OwnerId)176bc36eafdSMike Gerdts AcpiUtAllocateOwnerId (
177bc36eafdSMike Gerdts ACPI_OWNER_ID *OwnerId)
178bc36eafdSMike Gerdts {
179bc36eafdSMike Gerdts UINT32 i;
180bc36eafdSMike Gerdts UINT32 j;
181bc36eafdSMike Gerdts UINT32 k;
182bc36eafdSMike Gerdts ACPI_STATUS Status;
183bc36eafdSMike Gerdts
184bc36eafdSMike Gerdts
185bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE (UtAllocateOwnerId);
186bc36eafdSMike Gerdts
187bc36eafdSMike Gerdts
188bc36eafdSMike Gerdts /* Guard against multiple allocations of ID to the same location */
189bc36eafdSMike Gerdts
190bc36eafdSMike Gerdts if (*OwnerId)
191bc36eafdSMike Gerdts {
192bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO,
193bc36eafdSMike Gerdts "Owner ID [0x%2.2X] already exists", *OwnerId));
194bc36eafdSMike Gerdts return_ACPI_STATUS (AE_ALREADY_EXISTS);
195bc36eafdSMike Gerdts }
196bc36eafdSMike Gerdts
197bc36eafdSMike Gerdts /* Mutex for the global ID mask */
198bc36eafdSMike Gerdts
199bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_CACHES);
200bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
201bc36eafdSMike Gerdts {
202bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
203bc36eafdSMike Gerdts }
204bc36eafdSMike Gerdts
205bc36eafdSMike Gerdts /*
206bc36eafdSMike Gerdts * Find a free owner ID, cycle through all possible IDs on repeated
207bc36eafdSMike Gerdts * allocations. (ACPI_NUM_OWNERID_MASKS + 1) because first index
208bc36eafdSMike Gerdts * may have to be scanned twice.
209bc36eafdSMike Gerdts */
210bc36eafdSMike Gerdts for (i = 0, j = AcpiGbl_LastOwnerIdIndex;
211bc36eafdSMike Gerdts i < (ACPI_NUM_OWNERID_MASKS + 1);
212bc36eafdSMike Gerdts i++, j++)
213bc36eafdSMike Gerdts {
214bc36eafdSMike Gerdts if (j >= ACPI_NUM_OWNERID_MASKS)
215bc36eafdSMike Gerdts {
216bc36eafdSMike Gerdts j = 0; /* Wraparound to start of mask array */
217bc36eafdSMike Gerdts }
218bc36eafdSMike Gerdts
219bc36eafdSMike Gerdts for (k = AcpiGbl_NextOwnerIdOffset; k < 32; k++)
220bc36eafdSMike Gerdts {
221bc36eafdSMike Gerdts if (AcpiGbl_OwnerIdMask[j] == ACPI_UINT32_MAX)
222bc36eafdSMike Gerdts {
223bc36eafdSMike Gerdts /* There are no free IDs in this mask */
224bc36eafdSMike Gerdts
225bc36eafdSMike Gerdts break;
226bc36eafdSMike Gerdts }
227bc36eafdSMike Gerdts
228*35786f68SRobert Mustacchi /*
229*35786f68SRobert Mustacchi * Note: the UINT32 cast ensures that 1 is stored as a unsigned
230*35786f68SRobert Mustacchi * integer. Omitting the cast may result in 1 being stored as an
231*35786f68SRobert Mustacchi * int. Some compilers or runtime error detection may flag this as
232*35786f68SRobert Mustacchi * an error.
233*35786f68SRobert Mustacchi */
234*35786f68SRobert Mustacchi if (!(AcpiGbl_OwnerIdMask[j] & ((UINT32) 1 << k)))
235bc36eafdSMike Gerdts {
236bc36eafdSMike Gerdts /*
237bc36eafdSMike Gerdts * Found a free ID. The actual ID is the bit index plus one,
238bc36eafdSMike Gerdts * making zero an invalid Owner ID. Save this as the last ID
239bc36eafdSMike Gerdts * allocated and update the global ID mask.
240bc36eafdSMike Gerdts */
241*35786f68SRobert Mustacchi AcpiGbl_OwnerIdMask[j] |= ((UINT32) 1 << k);
242bc36eafdSMike Gerdts
243bc36eafdSMike Gerdts AcpiGbl_LastOwnerIdIndex = (UINT8) j;
244bc36eafdSMike Gerdts AcpiGbl_NextOwnerIdOffset = (UINT8) (k + 1);
245bc36eafdSMike Gerdts
246bc36eafdSMike Gerdts /*
247bc36eafdSMike Gerdts * Construct encoded ID from the index and bit position
248bc36eafdSMike Gerdts *
249bc36eafdSMike Gerdts * Note: Last [j].k (bit 255) is never used and is marked
250bc36eafdSMike Gerdts * permanently allocated (prevents +1 overflow)
251bc36eafdSMike Gerdts */
252bc36eafdSMike Gerdts *OwnerId = (ACPI_OWNER_ID) ((k + 1) + ACPI_MUL_32 (j));
253bc36eafdSMike Gerdts
254bc36eafdSMike Gerdts ACPI_DEBUG_PRINT ((ACPI_DB_VALUES,
255bc36eafdSMike Gerdts "Allocated OwnerId: %2.2X\n", (unsigned int) *OwnerId));
256bc36eafdSMike Gerdts goto Exit;
257bc36eafdSMike Gerdts }
258bc36eafdSMike Gerdts }
259bc36eafdSMike Gerdts
260bc36eafdSMike Gerdts AcpiGbl_NextOwnerIdOffset = 0;
261bc36eafdSMike Gerdts }
262bc36eafdSMike Gerdts
263bc36eafdSMike Gerdts /*
264bc36eafdSMike Gerdts * All OwnerIds have been allocated. This typically should
265bc36eafdSMike Gerdts * not happen since the IDs are reused after deallocation. The IDs are
266bc36eafdSMike Gerdts * allocated upon table load (one per table) and method execution, and
267bc36eafdSMike Gerdts * they are released when a table is unloaded or a method completes
268bc36eafdSMike Gerdts * execution.
269bc36eafdSMike Gerdts *
270bc36eafdSMike Gerdts * If this error happens, there may be very deep nesting of invoked
271bc36eafdSMike Gerdts * control methods, or there may be a bug where the IDs are not released.
272bc36eafdSMike Gerdts */
273bc36eafdSMike Gerdts Status = AE_OWNER_ID_LIMIT;
274bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO,
275bc36eafdSMike Gerdts "Could not allocate new OwnerId (255 max), AE_OWNER_ID_LIMIT"));
276bc36eafdSMike Gerdts
277bc36eafdSMike Gerdts Exit:
278bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_CACHES);
279bc36eafdSMike Gerdts return_ACPI_STATUS (Status);
280bc36eafdSMike Gerdts }
281bc36eafdSMike Gerdts
282bc36eafdSMike Gerdts
283bc36eafdSMike Gerdts /*******************************************************************************
284bc36eafdSMike Gerdts *
285bc36eafdSMike Gerdts * FUNCTION: AcpiUtReleaseOwnerId
286bc36eafdSMike Gerdts *
287bc36eafdSMike Gerdts * PARAMETERS: OwnerIdPtr - Pointer to a previously allocated OwnerID
288bc36eafdSMike Gerdts *
289bc36eafdSMike Gerdts * RETURN: None. No error is returned because we are either exiting a
290bc36eafdSMike Gerdts * control method or unloading a table. Either way, we would
291bc36eafdSMike Gerdts * ignore any error anyway.
292bc36eafdSMike Gerdts *
293bc36eafdSMike Gerdts * DESCRIPTION: Release a table or method owner ID. Valid IDs are 1 - 255
294bc36eafdSMike Gerdts *
295bc36eafdSMike Gerdts ******************************************************************************/
296bc36eafdSMike Gerdts
297bc36eafdSMike Gerdts void
AcpiUtReleaseOwnerId(ACPI_OWNER_ID * OwnerIdPtr)298bc36eafdSMike Gerdts AcpiUtReleaseOwnerId (
299bc36eafdSMike Gerdts ACPI_OWNER_ID *OwnerIdPtr)
300bc36eafdSMike Gerdts {
301bc36eafdSMike Gerdts ACPI_OWNER_ID OwnerId = *OwnerIdPtr;
302bc36eafdSMike Gerdts ACPI_STATUS Status;
303bc36eafdSMike Gerdts UINT32 Index;
304bc36eafdSMike Gerdts UINT32 Bit;
305bc36eafdSMike Gerdts
306bc36eafdSMike Gerdts
307bc36eafdSMike Gerdts ACPI_FUNCTION_TRACE_U32 (UtReleaseOwnerId, OwnerId);
308bc36eafdSMike Gerdts
309bc36eafdSMike Gerdts
310bc36eafdSMike Gerdts /* Always clear the input OwnerId (zero is an invalid ID) */
311bc36eafdSMike Gerdts
312bc36eafdSMike Gerdts *OwnerIdPtr = 0;
313bc36eafdSMike Gerdts
314bc36eafdSMike Gerdts /* Zero is not a valid OwnerID */
315bc36eafdSMike Gerdts
316bc36eafdSMike Gerdts if (OwnerId == 0)
317bc36eafdSMike Gerdts {
318bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO, "Invalid OwnerId: 0x%2.2X", OwnerId));
319bc36eafdSMike Gerdts return_VOID;
320bc36eafdSMike Gerdts }
321bc36eafdSMike Gerdts
322bc36eafdSMike Gerdts /* Mutex for the global ID mask */
323bc36eafdSMike Gerdts
324bc36eafdSMike Gerdts Status = AcpiUtAcquireMutex (ACPI_MTX_CACHES);
325bc36eafdSMike Gerdts if (ACPI_FAILURE (Status))
326bc36eafdSMike Gerdts {
327bc36eafdSMike Gerdts return_VOID;
328bc36eafdSMike Gerdts }
329bc36eafdSMike Gerdts
330bc36eafdSMike Gerdts /* Normalize the ID to zero */
331bc36eafdSMike Gerdts
332bc36eafdSMike Gerdts OwnerId--;
333bc36eafdSMike Gerdts
334bc36eafdSMike Gerdts /* Decode ID to index/offset pair */
335bc36eafdSMike Gerdts
336bc36eafdSMike Gerdts Index = ACPI_DIV_32 (OwnerId);
337*35786f68SRobert Mustacchi Bit = (UINT32) 1 << ACPI_MOD_32 (OwnerId);
338bc36eafdSMike Gerdts
339bc36eafdSMike Gerdts /* Free the owner ID only if it is valid */
340bc36eafdSMike Gerdts
341bc36eafdSMike Gerdts if (AcpiGbl_OwnerIdMask[Index] & Bit)
342bc36eafdSMike Gerdts {
343bc36eafdSMike Gerdts AcpiGbl_OwnerIdMask[Index] ^= Bit;
344bc36eafdSMike Gerdts }
345bc36eafdSMike Gerdts else
346bc36eafdSMike Gerdts {
347bc36eafdSMike Gerdts ACPI_ERROR ((AE_INFO,
348bc36eafdSMike Gerdts "Release of non-allocated OwnerId: 0x%2.2X", OwnerId + 1));
349bc36eafdSMike Gerdts }
350bc36eafdSMike Gerdts
351bc36eafdSMike Gerdts (void) AcpiUtReleaseMutex (ACPI_MTX_CACHES);
352bc36eafdSMike Gerdts return_VOID;
353bc36eafdSMike Gerdts }
354