1 /*******************************************************************************
3 * Module Name: utmisc - common utility procedures
5 ******************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2015, 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 *****************************************************************************/
117 #include "accommon.h"
118 #include "acnamesp.h"
121 #define _COMPONENT ACPI_UTILITIES
122 ACPI_MODULE_NAME ("utmisc")
125 /*******************************************************************************
127 * FUNCTION: AcpiUtIsPciRootBridge
129 * PARAMETERS: Id - The HID/CID in string format
131 * RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge
133 * DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID.
135 ******************************************************************************/
138 AcpiUtIsPciRootBridge (
143 * Check if this is a PCI root bridge.
144 * ACPI 3.0+: check for a PCI Express root also.
146 if (!(ACPI_STRCMP (Id,
147 PCI_ROOT_HID_STRING)) ||
150 PCI_EXPRESS_ROOT_HID_STRING)))
159 #if (defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP)
160 /*******************************************************************************
162 * FUNCTION: AcpiUtIsAmlTable
164 * PARAMETERS: Table - An ACPI table
166 * RETURN: TRUE if table contains executable AML; FALSE otherwise
168 * DESCRIPTION: Check ACPI Signature for a table that contains AML code.
169 * Currently, these are DSDT,SSDT,PSDT. All other table types are
170 * data tables that do not contain AML code.
172 ******************************************************************************/
176 ACPI_TABLE_HEADER *Table)
179 /* These are the only tables that contain executable AML */
181 if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT) ||
182 ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_PSDT) ||
183 ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_SSDT))
193 /*******************************************************************************
195 * FUNCTION: AcpiUtDwordByteSwap
197 * PARAMETERS: Value - Value to be converted
199 * RETURN: UINT32 integer with bytes swapped
201 * DESCRIPTION: Convert a 32-bit value to big-endian (swap the bytes)
203 ******************************************************************************/
206 AcpiUtDwordByteSwap (
221 ACPI_FUNCTION_ENTRY ();
226 Out.Bytes[0] = In.Bytes[3];
227 Out.Bytes[1] = In.Bytes[2];
228 Out.Bytes[2] = In.Bytes[1];
229 Out.Bytes[3] = In.Bytes[0];
235 /*******************************************************************************
237 * FUNCTION: AcpiUtSetIntegerWidth
239 * PARAMETERS: Revision From DSDT header
243 * DESCRIPTION: Set the global integer bit width based upon the revision
244 * of the DSDT. For Revision 1 and 0, Integers are 32 bits.
245 * For Revision 2 and above, Integers are 64 bits. Yes, this
246 * makes a difference.
248 ******************************************************************************/
251 AcpiUtSetIntegerWidth (
259 AcpiGbl_IntegerBitWidth = 32;
260 AcpiGbl_IntegerNybbleWidth = 8;
261 AcpiGbl_IntegerByteWidth = 4;
265 /* 64-bit case (ACPI 2.0+) */
267 AcpiGbl_IntegerBitWidth = 64;
268 AcpiGbl_IntegerNybbleWidth = 16;
269 AcpiGbl_IntegerByteWidth = 8;
274 /*******************************************************************************
276 * FUNCTION: AcpiUtCreateUpdateStateAndPush
278 * PARAMETERS: Object - Object to be added to the new state
279 * Action - Increment/Decrement
280 * StateList - List the state will be added to
284 * DESCRIPTION: Create a new state and push it
286 ******************************************************************************/
289 AcpiUtCreateUpdateStateAndPush (
290 ACPI_OPERAND_OBJECT *Object,
292 ACPI_GENERIC_STATE **StateList)
294 ACPI_GENERIC_STATE *State;
297 ACPI_FUNCTION_ENTRY ();
300 /* Ignore null objects; these are expected */
307 State = AcpiUtCreateUpdateState (Object, Action);
310 return (AE_NO_MEMORY);
313 AcpiUtPushGenericState (StateList, State);
318 /*******************************************************************************
320 * FUNCTION: AcpiUtWalkPackageTree
322 * PARAMETERS: SourceObject - The package to walk
323 * TargetObject - Target object (if package is being copied)
324 * WalkCallback - Called once for each package element
325 * Context - Passed to the callback function
329 * DESCRIPTION: Walk through a package
331 ******************************************************************************/
334 AcpiUtWalkPackageTree (
335 ACPI_OPERAND_OBJECT *SourceObject,
337 ACPI_PKG_CALLBACK WalkCallback,
340 ACPI_STATUS Status = AE_OK;
341 ACPI_GENERIC_STATE *StateList = NULL;
342 ACPI_GENERIC_STATE *State;
344 ACPI_OPERAND_OBJECT *ThisSourceObj;
347 ACPI_FUNCTION_TRACE (UtWalkPackageTree);
350 State = AcpiUtCreatePkgState (SourceObject, TargetObject, 0);
353 return_ACPI_STATUS (AE_NO_MEMORY);
358 /* Get one element of the package */
360 ThisIndex = State->Pkg.Index;
361 ThisSourceObj = (ACPI_OPERAND_OBJECT *)
362 State->Pkg.SourceObject->Package.Elements[ThisIndex];
366 * 1) An uninitialized package element. It is completely
367 * legal to declare a package and leave it uninitialized
368 * 2) Not an internal object - can be a namespace node instead
369 * 3) Any type other than a package. Packages are handled in else
372 if ((!ThisSourceObj) ||
373 (ACPI_GET_DESCRIPTOR_TYPE (ThisSourceObj) != ACPI_DESC_TYPE_OPERAND) ||
374 (ThisSourceObj->Common.Type != ACPI_TYPE_PACKAGE))
376 Status = WalkCallback (ACPI_COPY_TYPE_SIMPLE, ThisSourceObj,
378 if (ACPI_FAILURE (Status))
380 return_ACPI_STATUS (Status);
384 while (State->Pkg.Index >= State->Pkg.SourceObject->Package.Count)
387 * We've handled all of the objects at this level, This means
388 * that we have just completed a package. That package may
389 * have contained one or more packages itself.
391 * Delete this state and pop the previous state (package).
393 AcpiUtDeleteGenericState (State);
394 State = AcpiUtPopGenericState (&StateList);
396 /* Finished when there are no more states */
401 * We have handled all of the objects in the top level
402 * package just add the length of the package objects
405 return_ACPI_STATUS (AE_OK);
409 * Go back up a level and move the index past the just
410 * completed package object.
417 /* This is a subobject of type package */
419 Status = WalkCallback (ACPI_COPY_TYPE_PACKAGE, ThisSourceObj,
421 if (ACPI_FAILURE (Status))
423 return_ACPI_STATUS (Status);
427 * Push the current state and create a new one
428 * The callback above returned a new target package object.
430 AcpiUtPushGenericState (&StateList, State);
431 State = AcpiUtCreatePkgState (ThisSourceObj,
432 State->Pkg.ThisTargetObj, 0);
435 /* Free any stacked Update State objects */
439 State = AcpiUtPopGenericState (&StateList);
440 AcpiUtDeleteGenericState (State);
442 return_ACPI_STATUS (AE_NO_MEMORY);
447 /* We should never get here */
449 return_ACPI_STATUS (AE_AML_INTERNAL);
453 #ifdef ACPI_DEBUG_OUTPUT
454 /*******************************************************************************
456 * FUNCTION: AcpiUtDisplayInitPathname
458 * PARAMETERS: Type - Object type of the node
459 * ObjHandle - Handle whose pathname will be displayed
460 * Path - Additional path string to be appended.
461 * (NULL if no extra path)
463 * RETURN: ACPI_STATUS
465 * DESCRIPTION: Display full pathname of an object, DEBUG ONLY
467 ******************************************************************************/
470 AcpiUtDisplayInitPathname (
472 ACPI_NAMESPACE_NODE *ObjHandle,
479 ACPI_FUNCTION_ENTRY ();
482 /* Only print the path if the appropriate debug level is enabled */
484 if (!(AcpiDbgLevel & ACPI_LV_INIT_NAMES))
489 /* Get the full pathname to the node */
491 Buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
492 Status = AcpiNsHandleToPathname (ObjHandle, &Buffer);
493 if (ACPI_FAILURE (Status))
498 /* Print what we're doing */
502 case ACPI_TYPE_METHOD:
504 AcpiOsPrintf ("Executing ");
509 AcpiOsPrintf ("Initializing ");
513 /* Print the object type and pathname */
515 AcpiOsPrintf ("%-12s %s",
516 AcpiUtGetTypeName (Type), (char *) Buffer.Pointer);
518 /* Extra path is used to append names like _STA, _INI, etc. */
522 AcpiOsPrintf (".%s", Path);
526 ACPI_FREE (Buffer.Pointer);