1 /*******************************************************************************
3 * Module Name: utmisc - common utility procedures
5 ******************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2021, Intel Corp.
12 * All rights reserved.
16 * 2.1. This is your license from Intel Corp. under its intellectual property
17 * rights. You may have additional license terms from the party that provided
18 * you this software, covering your right to use that party's intellectual
21 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
22 * copy of the source code appearing in this file ("Covered Code") an
23 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
24 * base code distributed originally by Intel ("Original Intel Code") to copy,
25 * make derivatives, distribute, use and display any portion of the Covered
26 * Code in any form, with the right to sublicense such rights; and
28 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
29 * license (with the right to sublicense), under only those claims of Intel
30 * patents that are infringed by the Original Intel Code, to make, use, sell,
31 * offer to sell, and import the Covered Code and derivative works thereof
32 * solely to the minimum extent necessary to exercise the above copyright
33 * license, and in no event shall the patent license extend to any additions
34 * to or modifications of the Original Intel Code. No other license or right
35 * is granted directly or by implication, estoppel or otherwise;
37 * The above copyright and patent license is granted only if the following
42 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
43 * Redistribution of source code of any substantial portion of the Covered
44 * Code or modification with rights to further distribute source must include
45 * the above Copyright Notice, the above License, this list of Conditions,
46 * and the following Disclaimer and Export Compliance provision. In addition,
47 * Licensee must cause all Covered Code to which Licensee contributes to
48 * contain a file documenting the changes Licensee made to create that Covered
49 * Code and the date of any change. Licensee must include in that file the
50 * documentation of any changes made by any predecessor Licensee. Licensee
51 * must include a prominent statement that the modification is derived,
52 * directly or indirectly, from Original Intel Code.
54 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
55 * Redistribution of source code of any substantial portion of the Covered
56 * Code or modification without rights to further distribute source must
57 * include the following Disclaimer and Export Compliance provision in the
58 * documentation and/or other materials provided with distribution. In
59 * addition, Licensee may not authorize further sublicense of source of any
60 * portion of the Covered Code, and must include terms to the effect that the
61 * license from Licensee to its licensee is limited to the intellectual
62 * property embodied in the software Licensee provides to its licensee, and
63 * not to intellectual property embodied in modifications its licensee may
66 * 3.3. Redistribution of Executable. Redistribution in executable form of any
67 * substantial portion of the Covered Code or modification must reproduce the
68 * above Copyright Notice, and the following Disclaimer and Export Compliance
69 * provision in the documentation and/or other materials provided with the
72 * 3.4. Intel retains all right, title, and interest in and to the Original
75 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
76 * Intel shall be used in advertising or otherwise to promote the sale, use or
77 * other dealings in products derived from or relating to the Covered Code
78 * without prior written authorization from Intel.
80 * 4. Disclaimer and Export Compliance
82 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
83 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
84 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
85 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
86 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
87 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
90 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
91 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
92 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
93 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
94 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
95 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
96 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
99 * 4.3. Licensee shall not export, either directly or indirectly, any of this
100 * software or system incorporating such software without first obtaining any
101 * required license or other approval from the U. S. Department of Commerce or
102 * any other agency or department of the United States Government. In the
103 * event Licensee exports any such software from the United States or
104 * re-exports any such software from a foreign destination, Licensee shall
105 * ensure that the distribution and export/re-export of the software is in
106 * compliance with all laws, regulations, orders, or other restrictions of the
107 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
108 * any of its subsidiaries will export/re-export any technical data, process,
109 * software, or service, directly or indirectly, to any country for which the
110 * United States government or any agency thereof requires an export license,
111 * other governmental approval, or letter of assurance, without first obtaining
112 * such license, approval or letter.
114 *****************************************************************************
116 * Alternatively, you may choose to be licensed under the terms of the
119 * Redistribution and use in source and binary forms, with or without
120 * modification, are permitted provided that the following conditions
122 * 1. Redistributions of source code must retain the above copyright
123 * notice, this list of conditions, and the following disclaimer,
124 * without modification.
125 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
126 * substantially similar to the "NO WARRANTY" disclaimer below
127 * ("Disclaimer") and any redistribution must be conditioned upon
128 * including a substantially similar Disclaimer requirement for further
129 * binary redistribution.
130 * 3. Neither the names of the above-listed copyright holders nor the names
131 * of any contributors may be used to endorse or promote products derived
132 * from this software without specific prior written permission.
134 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
135 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
136 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
137 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
138 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
139 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
140 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
141 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
142 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
143 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
144 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
146 * Alternatively, you may choose to be licensed under the terms of the
147 * GNU General Public License ("GPL") version 2 as published by the Free
148 * Software Foundation.
150 *****************************************************************************/
153 #include "accommon.h"
154 #include "acnamesp.h"
157 #define _COMPONENT ACPI_UTILITIES
158 ACPI_MODULE_NAME ("utmisc")
161 /*******************************************************************************
163 * FUNCTION: AcpiUtIsPciRootBridge
165 * PARAMETERS: Id - The HID/CID in string format
167 * RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
169 * DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
171 ******************************************************************************/
174 AcpiUtIsPciRootBridge (
179 * Check if this is a PCI root bridge.
180 * ACPI 3.0+: check for a PCI Express root also.
183 PCI_ROOT_HID_STRING
)) ||
186 PCI_EXPRESS_ROOT_HID_STRING
)))
195 #if (defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP || defined ACPI_NAMES_APP)
196 /*******************************************************************************
198 * FUNCTION: AcpiUtIsAmlTable
200 * PARAMETERS: Table - An ACPI table
202 * RETURN: TRUE if table contains executable AML; FALSE otherwise
204 * DESCRIPTION: Check ACPI Signature for a table that contains AML code.
205 * Currently, these are DSDT,SSDT,PSDT. All other table types are
206 * data tables that do not contain AML code.
208 ******************************************************************************/
212 ACPI_TABLE_HEADER
*Table
)
215 /* These are the only tables that contain executable AML */
217 if (ACPI_COMPARE_NAMESEG (Table
->Signature
, ACPI_SIG_DSDT
) ||
218 ACPI_COMPARE_NAMESEG (Table
->Signature
, ACPI_SIG_PSDT
) ||
219 ACPI_COMPARE_NAMESEG (Table
->Signature
, ACPI_SIG_SSDT
) ||
220 ACPI_COMPARE_NAMESEG (Table
->Signature
, ACPI_SIG_OSDT
) ||
221 ACPI_IS_OEM_SIG (Table
->Signature
))
231 /*******************************************************************************
233 * FUNCTION: AcpiUtDwordByteSwap
235 * PARAMETERS: Value - Value to be converted
237 * RETURN: UINT32 integer with bytes swapped
239 * DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
241 ******************************************************************************/
244 AcpiUtDwordByteSwap (
259 ACPI_FUNCTION_ENTRY ();
264 Out
.Bytes
[0] = In
.Bytes
[3];
265 Out
.Bytes
[1] = In
.Bytes
[2];
266 Out
.Bytes
[2] = In
.Bytes
[1];
267 Out
.Bytes
[3] = In
.Bytes
[0];
273 /*******************************************************************************
275 * FUNCTION: AcpiUtSetIntegerWidth
277 * PARAMETERS: Revision From DSDT header
281 * DESCRIPTION: Set the global integer bit width based upon the revision
282 * of the DSDT. For Revision 1 and 0, Integers are 32 bits.
283 * For Revision 2 and above, Integers are 64 bits. Yes, this
284 * makes a difference.
286 ******************************************************************************/
289 AcpiUtSetIntegerWidth (
297 AcpiGbl_IntegerBitWidth
= 32;
298 AcpiGbl_IntegerNybbleWidth
= 8;
299 AcpiGbl_IntegerByteWidth
= 4;
303 /* 64-bit case (ACPI 2.0+) */
305 AcpiGbl_IntegerBitWidth
= 64;
306 AcpiGbl_IntegerNybbleWidth
= 16;
307 AcpiGbl_IntegerByteWidth
= 8;
312 /*******************************************************************************
314 * FUNCTION: AcpiUtCreateUpdateStateAndPush
316 * PARAMETERS: Object - Object to be added to the new state
317 * Action - Increment/Decrement
318 * StateList - List the state will be added to
322 * DESCRIPTION: Create a new state and push it
324 ******************************************************************************/
327 AcpiUtCreateUpdateStateAndPush (
328 ACPI_OPERAND_OBJECT
*Object
,
330 ACPI_GENERIC_STATE
**StateList
)
332 ACPI_GENERIC_STATE
*State
;
335 ACPI_FUNCTION_ENTRY ();
338 /* Ignore null objects; these are expected */
345 State
= AcpiUtCreateUpdateState (Object
, Action
);
348 return (AE_NO_MEMORY
);
351 AcpiUtPushGenericState (StateList
, State
);
356 /*******************************************************************************
358 * FUNCTION: AcpiUtWalkPackageTree
360 * PARAMETERS: SourceObject - The package to walk
361 * TargetObject - Target object (if package is being copied)
362 * WalkCallback - Called once for each package element
363 * Context - Passed to the callback function
367 * DESCRIPTION: Walk through a package, including subpackages
369 ******************************************************************************/
372 AcpiUtWalkPackageTree (
373 ACPI_OPERAND_OBJECT
*SourceObject
,
375 ACPI_PKG_CALLBACK WalkCallback
,
378 ACPI_STATUS Status
= AE_OK
;
379 ACPI_GENERIC_STATE
*StateList
= NULL
;
380 ACPI_GENERIC_STATE
*State
;
381 ACPI_OPERAND_OBJECT
*ThisSourceObj
;
385 ACPI_FUNCTION_TRACE (UtWalkPackageTree
);
388 State
= AcpiUtCreatePkgState (SourceObject
, TargetObject
, 0);
391 return_ACPI_STATUS (AE_NO_MEMORY
);
396 /* Get one element of the package */
398 ThisIndex
= State
->Pkg
.Index
;
400 State
->Pkg
.SourceObject
->Package
.Elements
[ThisIndex
];
401 State
->Pkg
.ThisTargetObj
=
402 &State
->Pkg
.SourceObject
->Package
.Elements
[ThisIndex
];
406 * 1) An uninitialized package element. It is completely
407 * legal to declare a package and leave it uninitialized
408 * 2) Not an internal object - can be a namespace node instead
409 * 3) Any type other than a package. Packages are handled in else
412 if ((!ThisSourceObj
) ||
413 (ACPI_GET_DESCRIPTOR_TYPE (ThisSourceObj
) !=
414 ACPI_DESC_TYPE_OPERAND
) ||
415 (ThisSourceObj
->Common
.Type
!= ACPI_TYPE_PACKAGE
))
417 Status
= WalkCallback (ACPI_COPY_TYPE_SIMPLE
, ThisSourceObj
,
419 if (ACPI_FAILURE (Status
))
421 return_ACPI_STATUS (Status
);
425 while (State
->Pkg
.Index
>=
426 State
->Pkg
.SourceObject
->Package
.Count
)
429 * We've handled all of the objects at this level, This means
430 * that we have just completed a package. That package may
431 * have contained one or more packages itself.
433 * Delete this state and pop the previous state (package).
435 AcpiUtDeleteGenericState (State
);
436 State
= AcpiUtPopGenericState (&StateList
);
438 /* Finished when there are no more states */
443 * We have handled all of the objects in the top level
444 * package just add the length of the package objects
447 return_ACPI_STATUS (AE_OK
);
451 * Go back up a level and move the index past the just
452 * completed package object.
459 /* This is a subobject of type package */
461 Status
= WalkCallback (
462 ACPI_COPY_TYPE_PACKAGE
, ThisSourceObj
, State
, Context
);
463 if (ACPI_FAILURE (Status
))
465 return_ACPI_STATUS (Status
);
469 * Push the current state and create a new one
470 * The callback above returned a new target package object.
472 AcpiUtPushGenericState (&StateList
, State
);
473 State
= AcpiUtCreatePkgState (
474 ThisSourceObj
, State
->Pkg
.ThisTargetObj
, 0);
477 /* Free any stacked Update State objects */
481 State
= AcpiUtPopGenericState (&StateList
);
482 AcpiUtDeleteGenericState (State
);
484 return_ACPI_STATUS (AE_NO_MEMORY
);
489 /* We should never get here */
491 ACPI_ERROR ((AE_INFO
,
492 "State list did not terminate correctly"));
494 return_ACPI_STATUS (AE_AML_INTERNAL
);
498 #ifdef ACPI_DEBUG_OUTPUT
499 /*******************************************************************************
501 * FUNCTION: AcpiUtDisplayInitPathname
503 * PARAMETERS: Type - Object type of the node
504 * ObjHandle - Handle whose pathname will be displayed
505 * Path - Additional path string to be appended.
506 * (NULL if no extra path)
508 * RETURN: ACPI_STATUS
510 * DESCRIPTION: Display full pathname of an object, DEBUG ONLY
512 ******************************************************************************/
515 AcpiUtDisplayInitPathname (
517 ACPI_NAMESPACE_NODE
*ObjHandle
,
524 ACPI_FUNCTION_ENTRY ();
527 /* Only print the path if the appropriate debug level is enabled */
529 if (!(AcpiDbgLevel
& ACPI_LV_INIT_NAMES
))
534 /* Get the full pathname to the node */
536 Buffer
.Length
= ACPI_ALLOCATE_LOCAL_BUFFER
;
537 Status
= AcpiNsHandleToPathname (ObjHandle
, &Buffer
, TRUE
);
538 if (ACPI_FAILURE (Status
))
543 /* Print what we're doing */
547 case ACPI_TYPE_METHOD
:
549 AcpiOsPrintf ("Executing ");
554 AcpiOsPrintf ("Initializing ");
558 /* Print the object type and pathname */
560 AcpiOsPrintf ("%-12s %s",
561 AcpiUtGetTypeName (Type
), (char *) Buffer
.Pointer
);
563 /* Extra path is used to append names like _STA, _INI, etc. */
567 AcpiOsPrintf (".%s", Path
);
571 ACPI_FREE (Buffer
.Pointer
);