1 /*******************************************************************************
3 * Module Name: dmbuffer - AML disassembler, buffer and string support
5 ******************************************************************************/
8 * Copyright (C) 2000 - 2016, Intel Corp.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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.
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.
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.
44 #include <contrib/dev/acpica/include/acpi.h>
45 #include <contrib/dev/acpica/include/accommon.h>
46 #include <contrib/dev/acpica/include/acutils.h>
47 #include <contrib/dev/acpica/include/acdisasm.h>
48 #include <contrib/dev/acpica/include/acparser.h>
49 #include <contrib/dev/acpica/include/amlcode.h>
50 #include <contrib/dev/acpica/include/acinterp.h>
53 #define _COMPONENT ACPI_CA_DEBUGGER
54 ACPI_MODULE_NAME ("dmbuffer")
56 /* Local prototypes */
60 ACPI_PARSE_OBJECT *Op);
64 ACPI_PARSE_OBJECT *Op);
67 AcpiDmGetHardwareIdType (
68 ACPI_PARSE_OBJECT *Op);
77 AcpiDmFindNameByIndex (
82 #define ACPI_BUFFER_BYTES_PER_LINE 8
85 /*******************************************************************************
87 * FUNCTION: AcpiDmDisasmByteList
89 * PARAMETERS: Level - Current source code indentation level
90 * ByteData - Pointer to the byte list
91 * ByteCount - Length of the byte list
95 * DESCRIPTION: Dump an AML "ByteList" in Hex format. 8 bytes per line, prefixed
96 * with the hex buffer offset.
98 ******************************************************************************/
101 AcpiDmDisasmByteList (
117 for (i = 0; i < ByteCount; i += ACPI_BUFFER_BYTES_PER_LINE)
119 /* Line indent and offset prefix for each new line */
121 AcpiDmIndent (Level);
122 if (ByteCount > ACPI_BUFFER_BYTES_PER_LINE)
124 AcpiOsPrintf ("/* %04X */ ", i);
127 /* Dump the actual hex values */
129 for (j = 0; j < ACPI_BUFFER_BYTES_PER_LINE; j++)
131 CurrentIndex = i + j;
132 if (CurrentIndex >= ByteCount)
134 /* Dump fill spaces */
140 AcpiOsPrintf (" 0x%2.2X", ByteData[CurrentIndex]);
142 /* Add comma if there are more bytes to display */
144 if (CurrentIndex < (ByteCount - 1))
154 /* Dump the ASCII equivalents within a comment */
156 AcpiOsPrintf (" /* ");
157 for (j = 0; j < ACPI_BUFFER_BYTES_PER_LINE; j++)
159 CurrentIndex = i + j;
160 if (CurrentIndex >= ByteCount)
165 BufChar = ByteData[CurrentIndex];
166 if (isprint (BufChar))
168 AcpiOsPrintf ("%c", BufChar);
176 /* Finished with this line */
178 AcpiOsPrintf (" */\n");
183 /*******************************************************************************
185 * FUNCTION: AcpiDmByteList
187 * PARAMETERS: Info - Parse tree walk info
192 * DESCRIPTION: Dump a buffer byte list, handling the various types of buffers.
193 * Buffer type must be already set in the Op DisasmOpcode.
195 ******************************************************************************/
199 ACPI_OP_WALK_INFO *Info,
200 ACPI_PARSE_OBJECT *Op)
206 ByteData = Op->Named.Data;
207 ByteCount = (UINT32) Op->Common.Value.Integer;
210 * The byte list belongs to a buffer, and can be produced by either
211 * a ResourceTemplate, Unicode, quoted string, or a plain byte list.
213 switch (Op->Common.Parent->Common.DisasmOpcode)
215 case ACPI_DASM_RESOURCE:
217 AcpiDmResourceTemplate (
218 Info, Op->Common.Parent, ByteData, ByteCount);
221 case ACPI_DASM_STRING:
223 AcpiDmIndent (Info->Level);
224 AcpiUtPrintString ((char *) ByteData, ACPI_UINT16_MAX);
233 case ACPI_DASM_UNICODE:
238 case ACPI_DASM_PLD_METHOD:
240 AcpiDmDisasmByteList (Info->Level, ByteData, ByteCount);
242 AcpiDmPldBuffer (Info->Level, ByteData, ByteCount);
245 case ACPI_DASM_BUFFER:
248 * Not a resource, string, or unicode string.
249 * Just dump the buffer
251 AcpiDmDisasmByteList (Info->Level, ByteData, ByteCount);
257 /*******************************************************************************
259 * FUNCTION: AcpiDmIsUuidBuffer
261 * PARAMETERS: Op - Buffer Object to be examined
263 * RETURN: TRUE if buffer contains a UUID
265 * DESCRIPTION: Determine if a buffer Op contains a UUID
267 * To help determine whether the buffer is a UUID versus a raw data buffer,
268 * there a are a couple bytes we can look at:
270 * xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx
272 * The variant covered by the UUID specification is indicated by the two most
273 * significant bits of N being 1 0 (i.e., the hexadecimal N will always be
276 * The variant covered by the UUID specification has five versions. For this
277 * variant, the four bits of M indicates the UUID version (i.e., the
278 * hexadecimal M will be either 1, 2, 3, 4, or 5).
280 ******************************************************************************/
284 ACPI_PARSE_OBJECT *Op)
288 ACPI_PARSE_OBJECT *SizeOp;
289 ACPI_PARSE_OBJECT *NextOp;
292 /* Buffer size is the buffer argument */
294 SizeOp = Op->Common.Value.Arg;
296 /* Next, the initializer byte list to examine */
298 NextOp = SizeOp->Common.Next;
304 /* Extract the byte list info */
306 ByteData = NextOp->Named.Data;
307 ByteCount = (UINT32) NextOp->Common.Value.Integer;
309 /* Byte count must be exactly 16 */
311 if (ByteCount != UUID_BUFFER_LENGTH)
316 /* Check for valid "M" and "N" values (see function header above) */
318 if (((ByteData[7] & 0xF0) == 0x00) || /* M={1,2,3,4,5} */
319 ((ByteData[7] & 0xF0) > 0x50) ||
320 ((ByteData[8] & 0xF0) < 0x80) || /* N={8,9,A,B} */
321 ((ByteData[8] & 0xF0) > 0xB0))
326 /* Ignore the Size argument in the disassembly of this buffer op */
328 SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
333 /*******************************************************************************
335 * FUNCTION: AcpiDmUuid
337 * PARAMETERS: Op - Byte List op containing a UUID
341 * DESCRIPTION: Dump a buffer containing a UUID as a standard ASCII string.
344 * In its canonical form, the UUID is represented by a string containing 32
345 * lowercase hexadecimal digits, displayed in 5 groups separated by hyphens.
346 * The complete form is 8-4-4-4-12 for a total of 36 characters (32
347 * alphanumeric characters representing hex digits and 4 hyphens). In bytes,
348 * 4-2-2-2-6. Example:
350 * ToUUID ("107ededd-d381-4fd7-8da9-08e9a6c79644")
352 ******************************************************************************/
356 ACPI_PARSE_OBJECT *Op)
359 const char *Description;
362 Data = ACPI_CAST_PTR (UINT8, Op->Named.Data);
364 /* Emit the 36-byte UUID string in the proper format/order */
367 "\"%2.2x%2.2x%2.2x%2.2x-"
371 "%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x\")",
372 Data[3], Data[2], Data[1], Data[0],
376 Data[10], Data[11], Data[12], Data[13], Data[14], Data[15]);
378 /* Dump the UUID description string if available */
380 Description = AcpiAhMatchUuid (Data);
383 AcpiOsPrintf (" /* %s */", Description);
388 /*******************************************************************************
390 * FUNCTION: AcpiDmIsUnicodeBuffer
392 * PARAMETERS: Op - Buffer Object to be examined
394 * RETURN: TRUE if buffer contains a UNICODE string
396 * DESCRIPTION: Determine if a buffer Op contains a Unicode string
398 ******************************************************************************/
401 AcpiDmIsUnicodeBuffer (
402 ACPI_PARSE_OBJECT *Op)
407 ACPI_PARSE_OBJECT *SizeOp;
408 ACPI_PARSE_OBJECT *NextOp;
412 /* Buffer size is the buffer argument */
414 SizeOp = Op->Common.Value.Arg;
416 /* Next, the initializer byte list to examine */
418 NextOp = SizeOp->Common.Next;
424 /* Extract the byte list info */
426 ByteData = NextOp->Named.Data;
427 ByteCount = (UINT32) NextOp->Common.Value.Integer;
428 WordCount = ACPI_DIV_2 (ByteCount);
431 * Unicode string must have an even number of bytes and last
437 ((UINT16 *) (void *) ByteData)[WordCount - 1] != 0)
442 /* For each word, 1st byte must be ascii (1-0x7F), 2nd byte must be zero */
444 for (i = 0; i < (ByteCount - 2); i += 2)
446 if ((ByteData[i] == 0) ||
447 (ByteData[i] > 0x7F) ||
448 (ByteData[(ACPI_SIZE) i + 1] != 0))
454 /* Ignore the Size argument in the disassembly of this buffer op */
456 SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
461 /*******************************************************************************
463 * FUNCTION: AcpiDmIsStringBuffer
465 * PARAMETERS: Op - Buffer Object to be examined
467 * RETURN: TRUE if buffer contains a ASCII string, FALSE otherwise
469 * DESCRIPTION: Determine if a buffer Op contains a ASCII string
471 ******************************************************************************/
474 AcpiDmIsStringBuffer (
475 ACPI_PARSE_OBJECT *Op)
479 ACPI_PARSE_OBJECT *SizeOp;
480 ACPI_PARSE_OBJECT *NextOp;
484 /* Buffer size is the buffer argument */
486 SizeOp = Op->Common.Value.Arg;
488 /* Next, the initializer byte list to examine */
490 NextOp = SizeOp->Common.Next;
496 /* Extract the byte list info */
498 ByteData = NextOp->Named.Data;
499 ByteCount = (UINT32) NextOp->Common.Value.Integer;
501 /* Last byte must be the null terminator */
505 (ByteData[ByteCount-1] != 0))
510 for (i = 0; i < (ByteCount - 1); i++)
512 /* TBD: allow some escapes (non-ascii chars).
513 * they will be handled in the string output routine
516 if (!isprint (ByteData[i]))
526 /*******************************************************************************
528 * FUNCTION: AcpiDmIsPldBuffer
530 * PARAMETERS: Op - Buffer Object to be examined
532 * RETURN: TRUE if buffer contains a ASCII string, FALSE otherwise
534 * DESCRIPTION: Determine if a buffer Op contains a _PLD structure
536 ******************************************************************************/
540 ACPI_PARSE_OBJECT *Op)
542 ACPI_NAMESPACE_NODE *Node;
543 ACPI_PARSE_OBJECT *SizeOp;
544 ACPI_PARSE_OBJECT *ParentOp;
547 /* Buffer size is the buffer argument */
549 SizeOp = Op->Common.Value.Arg;
551 ParentOp = Op->Common.Parent;
557 /* Check for form: Name(_PLD, Buffer() {}). Not legal, however */
559 if (ParentOp->Common.AmlOpcode == AML_NAME_OP)
561 Node = ParentOp->Common.Node;
563 if (ACPI_COMPARE_NAME (Node->Name.Ascii, METHOD_NAME__PLD))
565 /* Ignore the Size argument in the disassembly of this buffer op */
567 SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
574 /* Check for proper form: Name(_PLD, Package() {Buffer() {}}) */
576 if (ParentOp->Common.AmlOpcode == AML_PACKAGE_OP)
578 ParentOp = ParentOp->Common.Parent;
584 if (ParentOp->Common.AmlOpcode == AML_NAME_OP)
586 Node = ParentOp->Common.Node;
588 if (ACPI_COMPARE_NAME (Node->Name.Ascii, METHOD_NAME__PLD))
590 /* Ignore the Size argument in the disassembly of this buffer op */
592 SizeOp->Common.DisasmFlags |= ACPI_PARSEOP_IGNORE;
602 /*******************************************************************************
604 * FUNCTION: AcpiDmFindNameByIndex
606 * PARAMETERS: Index - Index of array to check
607 * List - Array to reference
609 * RETURN: String from List or empty string
611 * DESCRIPTION: Finds and returns the char string located at the given index
614 ******************************************************************************/
617 AcpiDmFindNameByIndex (
621 const char *NameString;
627 NameString = List[0];
633 NameString = List[i];
638 /* TBD: Add error msg */
643 return (List[Index]);
647 /*******************************************************************************
649 * FUNCTION: AcpiDmPldBuffer
651 * PARAMETERS: Level - Current source code indentation level
652 * ByteData - Pointer to the byte list
653 * ByteCount - Length of the byte list
657 * DESCRIPTION: Dump and format the contents of a _PLD buffer object
659 ******************************************************************************/
661 #define ACPI_PLD_OUTPUT08 "%*.s%-22s = 0x%X,\n", ACPI_MUL_4 (Level), " "
662 #define ACPI_PLD_OUTPUT08P "%*.s%-22s = 0x%X)\n", ACPI_MUL_4 (Level), " "
663 #define ACPI_PLD_OUTPUT16 "%*.s%-22s = 0x%X,\n", ACPI_MUL_4 (Level), " "
664 #define ACPI_PLD_OUTPUT16P "%*.s%-22s = 0x%X)\n", ACPI_MUL_4 (Level), " "
665 #define ACPI_PLD_OUTPUT24 "%*.s%-22s = 0x%X,\n", ACPI_MUL_4 (Level), " "
666 #define ACPI_PLD_OUTPUTSTR "%*.s%-22s = \"%s\",\n", ACPI_MUL_4 (Level), " "
674 ACPI_PLD_INFO *PldInfo;
678 /* Check for valid byte count */
680 if (ByteCount < ACPI_PLD_REV1_BUFFER_SIZE)
685 /* Convert _PLD buffer to local _PLD struct */
687 Status = AcpiDecodePldBuffer (ByteData, ByteCount, &PldInfo);
688 if (ACPI_FAILURE (Status))
695 /* First 32-bit dword */
697 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Revision", PldInfo->Revision);
698 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_IgnoreColor", PldInfo->IgnoreColor);
699 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Red", PldInfo->Red);
700 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Green", PldInfo->Green);
701 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Blue", PldInfo->Blue);
703 /* Second 32-bit dword */
705 AcpiOsPrintf (ACPI_PLD_OUTPUT16, "PLD_Width", PldInfo->Width);
706 AcpiOsPrintf (ACPI_PLD_OUTPUT16, "PLD_Height", PldInfo->Height);
708 /* Third 32-bit dword */
710 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_UserVisible", PldInfo->UserVisible);
711 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Dock", PldInfo->Dock);
712 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Lid", PldInfo->Lid);
713 AcpiOsPrintf (ACPI_PLD_OUTPUTSTR, "PLD_Panel",
714 AcpiDmFindNameByIndex(PldInfo->Panel, AcpiGbl_PldPanelList));
716 AcpiOsPrintf (ACPI_PLD_OUTPUTSTR, "PLD_VerticalPosition",
717 AcpiDmFindNameByIndex(PldInfo->VerticalPosition, AcpiGbl_PldVerticalPositionList));
719 AcpiOsPrintf (ACPI_PLD_OUTPUTSTR, "PLD_HorizontalPosition",
720 AcpiDmFindNameByIndex(PldInfo->HorizontalPosition, AcpiGbl_PldHorizontalPositionList));
722 AcpiOsPrintf (ACPI_PLD_OUTPUTSTR, "PLD_Shape",
723 AcpiDmFindNameByIndex(PldInfo->Shape, AcpiGbl_PldShapeList));
724 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_GroupOrientation", PldInfo->GroupOrientation);
726 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_GroupToken", PldInfo->GroupToken);
727 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_GroupPosition", PldInfo->GroupPosition);
728 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Bay", PldInfo->Bay);
730 /* Fourth 32-bit dword */
732 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Ejectable", PldInfo->Ejectable);
733 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_EjectRequired", PldInfo->OspmEjectRequired);
734 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_CabinetNumber", PldInfo->CabinetNumber);
735 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_CardCageNumber", PldInfo->CardCageNumber);
736 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Reference", PldInfo->Reference);
737 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Rotation", PldInfo->Rotation);
739 if (ByteCount >= ACPI_PLD_REV2_BUFFER_SIZE)
741 AcpiOsPrintf (ACPI_PLD_OUTPUT08, "PLD_Order", PldInfo->Order);
743 /* Fifth 32-bit dword */
745 AcpiOsPrintf (ACPI_PLD_OUTPUT16, "PLD_VerticalOffset", PldInfo->VerticalOffset);
746 AcpiOsPrintf (ACPI_PLD_OUTPUT16P, "PLD_HorizontalOffset", PldInfo->HorizontalOffset);
748 else /* Rev 1 buffer */
750 AcpiOsPrintf (ACPI_PLD_OUTPUT08P, "PLD_Order", PldInfo->Order);
757 /*******************************************************************************
759 * FUNCTION: AcpiDmUnicode
761 * PARAMETERS: Op - Byte List op containing Unicode string
765 * DESCRIPTION: Dump Unicode string as a standard ASCII string. (Remove
766 * the extra zero bytes).
768 ******************************************************************************/
772 ACPI_PARSE_OBJECT *Op)
780 /* Extract the buffer info as a WORD buffer */
782 WordData = ACPI_CAST_PTR (UINT16, Op->Named.Data);
783 WordCount = ACPI_DIV_2 (((UINT32) Op->Common.Value.Integer));
785 /* Write every other byte as an ASCII character */
788 for (i = 0; i < (WordCount - 1); i++)
790 OutputValue = (int) WordData[i];
792 /* Handle values that must be escaped */
794 if ((OutputValue == '\"') ||
795 (OutputValue == '\\'))
797 AcpiOsPrintf ("\\%c", OutputValue);
799 else if (!isprint (OutputValue))
801 AcpiOsPrintf ("\\x%2.2X", OutputValue);
805 AcpiOsPrintf ("%c", OutputValue);
809 AcpiOsPrintf ("\")");
813 /*******************************************************************************
815 * FUNCTION: AcpiDmGetHardwareIdType
817 * PARAMETERS: Op - Op to be examined
821 * DESCRIPTION: Determine the type of the argument to a _HID or _CID
822 * 1) Strings are allowed
823 * 2) If Integer, determine if it is a valid EISAID
825 ******************************************************************************/
828 AcpiDmGetHardwareIdType (
829 ACPI_PARSE_OBJECT *Op)
836 switch (Op->Common.AmlOpcode)
840 /* Mark this string as an _HID/_CID string */
842 Op->Common.DisasmOpcode = ACPI_DASM_HID_STRING;
848 /* Determine if a Word/Dword is a valid encoded EISAID */
850 /* Swap from little-endian to big-endian to simplify conversion */
852 BigEndianId = AcpiUtDwordByteSwap ((UINT32) Op->Common.Value.Integer);
854 /* Create the 3 leading ASCII letters */
856 Prefix[0] = ((BigEndianId >> 26) & 0x1F) + 0x40;
857 Prefix[1] = ((BigEndianId >> 21) & 0x1F) + 0x40;
858 Prefix[2] = ((BigEndianId >> 16) & 0x1F) + 0x40;
860 /* Verify that all 3 are ascii and alpha */
862 for (i = 0; i < 3; i++)
864 if (!ACPI_IS_ASCII (Prefix[i]) ||
865 !isalpha (Prefix[i]))
871 /* Mark this node as convertable to an EISA ID string */
873 Op->Common.DisasmOpcode = ACPI_DASM_EISAID;
882 /*******************************************************************************
884 * FUNCTION: AcpiDmCheckForHardwareId
886 * PARAMETERS: Op - Op to be examined
890 * DESCRIPTION: Determine if a Name() Op is a _HID/_CID.
892 ******************************************************************************/
895 AcpiDmCheckForHardwareId (
896 ACPI_PARSE_OBJECT *Op)
899 ACPI_PARSE_OBJECT *NextOp;
902 /* Get the NameSegment */
904 Name = AcpiPsGetName (Op);
910 NextOp = AcpiPsGetDepthNext (NULL, Op);
916 /* Check for _HID - has one argument */
918 if (ACPI_COMPARE_NAME (&Name, METHOD_NAME__HID))
920 AcpiDmGetHardwareIdType (NextOp);
924 /* Exit if not _CID */
926 if (!ACPI_COMPARE_NAME (&Name, METHOD_NAME__CID))
931 /* _CID can contain a single argument or a package */
933 if (NextOp->Common.AmlOpcode != AML_PACKAGE_OP)
935 AcpiDmGetHardwareIdType (NextOp);
939 /* _CID with Package: get the package length, check all elements */
941 NextOp = AcpiPsGetDepthNext (NULL, NextOp);
947 /* Don't need to use the length, just walk the peer list */
949 NextOp = NextOp->Common.Next;
952 AcpiDmGetHardwareIdType (NextOp);
953 NextOp = NextOp->Common.Next;
958 /*******************************************************************************
960 * FUNCTION: AcpiDmDecompressEisaId
962 * PARAMETERS: EncodedId - Raw encoded EISA ID.
966 * DESCRIPTION: Convert an encoded EISAID back to the original ASCII String
967 * and emit the correct ASL statement. If the ID is known, emit
968 * a description of the ID as a comment.
970 ******************************************************************************/
973 AcpiDmDecompressEisaId (
976 char IdBuffer[ACPI_EISAID_STRING_SIZE];
977 const AH_DEVICE_ID *Info;
980 /* Convert EISAID to a string an emit the statement */
982 AcpiExEisaIdToString (IdBuffer, EncodedId);
983 AcpiOsPrintf ("EisaId (\"%s\")", IdBuffer);
985 /* If we know about the ID, emit the description */
987 Info = AcpiAhMatchHardwareId (IdBuffer);
990 AcpiOsPrintf (" /* %s */", Info->Description);