1 /******************************************************************************
3 * Module Name: dtfield.c - Code generation for individual source fields
5 *****************************************************************************/
7 /******************************************************************************
11 * Some or all of this work - Copyright (c) 1999 - 2012, 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 #define __DTFIELD_C__
118 #include "aslcompiler.h"
119 #include "dtcompiler.h"
121 #define _COMPONENT DT_COMPILER
122 ACPI_MODULE_NAME ("dtfield")
125 /* Local prototypes */
151 /******************************************************************************
153 * FUNCTION: DtCompileOneField
155 * PARAMETERS: Buffer - Output buffer
156 * Field - Field to be compiled
157 * ByteLength - Byte length of the field
162 * DESCRIPTION: Compile a field value to binary
164 *****************************************************************************/
178 case DT_FIELD_TYPE_INTEGER:
179 DtCompileInteger (Buffer, Field, ByteLength, Flags);
182 case DT_FIELD_TYPE_STRING:
183 DtCompileString (Buffer, Field, ByteLength);
186 case DT_FIELD_TYPE_UUID:
187 Status = DtCompileUuid (Buffer, Field, ByteLength);
188 if (ACPI_SUCCESS (Status))
195 case DT_FIELD_TYPE_BUFFER:
196 DtCompileBuffer (Buffer, Field->Value, Field, ByteLength);
199 case DT_FIELD_TYPE_UNICODE:
200 DtCompileUnicode (Buffer, Field, ByteLength);
203 case DT_FIELD_TYPE_DEVICE_PATH:
207 DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid field type");
213 /******************************************************************************
215 * FUNCTION: DtCompileString
217 * PARAMETERS: Buffer - Output buffer
218 * Field - String to be copied to buffer
219 * ByteLength - Maximum length of string
223 * DESCRIPTION: Copy string to the buffer
225 *****************************************************************************/
236 Length = ACPI_STRLEN (Field->Value);
238 /* Check if the string is too long for the field */
240 if (Length > ByteLength)
242 sprintf (MsgBuffer, "Maximum %u characters", ByteLength);
243 DtError (ASL_ERROR, ASL_MSG_STRING_LENGTH, Field, MsgBuffer);
247 ACPI_MEMCPY (Buffer, Field->Value, Length);
251 /******************************************************************************
253 * FUNCTION: DtCompileUnicode
255 * PARAMETERS: Buffer - Output buffer
256 * Field - String to be copied to buffer
257 * ByteLength - Maximum length of string
261 * DESCRIPTION: Convert ASCII string to Unicode string
263 * Note: The Unicode string is 16 bits per character, no leading signature,
264 * with a 16-bit terminating NULL.
266 *****************************************************************************/
277 UINT16 *UnicodeString;
280 AsciiString = Field->Value;
281 UnicodeString = (UINT16 *) Buffer;
282 Count = ACPI_STRLEN (AsciiString) + 1;
284 /* Convert to Unicode string (including null terminator) */
286 for (i = 0; i < Count; i++)
288 UnicodeString[i] = (UINT16) AsciiString[i];
293 /*******************************************************************************
295 * FUNCTION: DtCompileUuid
297 * PARAMETERS: Buffer - Output buffer
298 * Field - String to be copied to buffer
299 * ByteLength - Maximum length of string
303 * DESCRIPTION: Convert UUID string to 16-byte buffer
305 ******************************************************************************/
317 InString = Field->Value;
319 Status = AuValidateUuid (InString);
320 if (ACPI_FAILURE (Status))
322 sprintf (MsgBuffer, "%s", Field->Value);
323 DtNameError (ASL_ERROR, ASL_MSG_INVALID_UUID, Field, MsgBuffer);
327 Status = AuConvertStringToUuid (InString, (char *) Buffer);
334 /******************************************************************************
336 * FUNCTION: DtCompileInteger
338 * PARAMETERS: Buffer - Output buffer
339 * Field - Field obj with Integer to be compiled
340 * ByteLength - Byte length of the integer
341 * Flags - Additional compile info
345 * DESCRIPTION: Compile an integer. Supports integer expressions with C-style
348 *****************************************************************************/
362 /* Output buffer byte length must be in range 1-8 */
364 if ((ByteLength > 8) || (ByteLength == 0))
366 DtFatal (ASL_MSG_COMPILER_INTERNAL, Field,
367 "Invalid internal Byte length");
371 /* Resolve integer expression to a single integer value */
373 Status = DtResolveIntegerExpression (Field, &Value);
374 if (ACPI_FAILURE (Status))
379 /* Ensure that reserved fields are set to zero */
380 /* TBD: should we set to zero, or just make this an ERROR? */
381 /* TBD: Probably better to use a flag */
383 if (!ACPI_STRCMP (Field->Name, "Reserved") &&
386 DtError (ASL_WARNING, ASL_MSG_RESERVED_VALUE, Field,
391 /* Check if the value must be non-zero */
393 if ((Value == 0) && (Flags & DT_NON_ZERO))
395 DtError (ASL_ERROR, ASL_MSG_ZERO_VALUE, Field, NULL);
399 * Generate the maximum value for the data type (ByteLength)
400 * Note: construct chosen for maximum portability
402 MaxValue = ((UINT64) (-1)) >> (64 - (ByteLength * 8));
404 /* Validate that the input value is within range of the target */
406 if (Value > MaxValue)
408 sprintf (MsgBuffer, "%8.8X%8.8X", ACPI_FORMAT_UINT64 (Value));
409 DtError (ASL_ERROR, ASL_MSG_INTEGER_SIZE, Field, MsgBuffer);
412 ACPI_MEMCPY (Buffer, &Value, ByteLength);
417 /******************************************************************************
419 * FUNCTION: DtNormalizeBuffer
421 * PARAMETERS: Buffer - Input buffer
422 * Count - Output the count of hex number in
425 * RETURN: The normalized buffer, freed by caller
427 * DESCRIPTION: [1A,2B,3C,4D] or 1A, 2B, 3C, 4D will be normalized
430 *****************************************************************************/
439 UINT32 BufferCount = 0;
440 BOOLEAN Separator = TRUE;
444 NewBuffer = UtLocalCalloc (ACPI_STRLEN (Buffer) + 1);
445 TmpBuffer = NewBuffer;
447 while ((c = *Buffer++))
451 /* Valid separators */
463 /* Insert blank as the standard separator */
479 *Count = BufferCount + 1;
484 /******************************************************************************
486 * FUNCTION: DtCompileBuffer
488 * PARAMETERS: Buffer - Output buffer
489 * StringValue - Integer list to be compiled
490 * Field - Current field object
491 * ByteLength - Byte length of the integer list
493 * RETURN: Count of remaining data in the input list
495 * DESCRIPTION: Compile and pack an integer list, for example
496 * "AA 1F 20 3B" ==> Buffer[] = {0xAA,0x1F,0x20,0x3B}
498 *****************************************************************************/
514 /* Allow several different types of value separators */
516 StringValue = DtNormalizeBuffer (StringValue, &Count);
519 for (i = 0; i < Count; i++)
521 /* Each element of StringValue is three chars */
523 Hex[0] = StringValue[(3 * i)];
524 Hex[1] = StringValue[(3 * i) + 1];
526 /* Convert one hex byte */
529 Status = DtStrtoul64 (Hex, &Value);
530 if (ACPI_FAILURE (Status))
532 DtError (ASL_ERROR, ASL_MSG_BUFFER_ELEMENT, Field, MsgBuffer);
533 return (ByteLength - Count);
536 Buffer[i] = (UINT8) Value;
539 ACPI_FREE (StringValue);
540 return (ByteLength - Count);
544 /******************************************************************************
546 * FUNCTION: DtCompileFlag
548 * PARAMETERS: Buffer - Output buffer
549 * Field - Field to be compiled
554 * DESCRIPTION: Compile a flag
556 *****************************************************************************/
562 ACPI_DMTABLE_INFO *Info)
565 UINT32 BitLength = 1;
566 UINT8 BitPosition = 0;
570 Status = DtStrtoul64 (Field->Value, &Value);
571 if (ACPI_FAILURE (Status))
573 DtError (ASL_ERROR, ASL_MSG_INVALID_HEX_INTEGER, Field, NULL);
576 switch (Info->Opcode)
587 BitPosition = Info->Opcode;
591 case ACPI_DMT_FLAGS0:
598 case ACPI_DMT_FLAGS1:
605 case ACPI_DMT_FLAGS2:
611 case ACPI_DMT_FLAGS4:
619 DtFatal (ASL_MSG_COMPILER_INTERNAL, Field, "Invalid flag opcode");
623 /* Check range of the input flag value */
625 if (Value >= ((UINT64) 1 << BitLength))
627 sprintf (MsgBuffer, "Maximum %u bit", BitLength);
628 DtError (ASL_ERROR, ASL_MSG_FLAG_VALUE, Field, MsgBuffer);
632 *Buffer |= (UINT8) (Value << BitPosition);