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1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: utuuid -- UUID support functions | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
c8100dc4 | 8 | * Copyright (C) 2000 - 2016, Intel Corp. |
73bbca04 BM |
9 | * All rights reserved. |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or without | |
12 | * modification, are permitted provided that the following conditions | |
13 | * are met: | |
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. | |
25 | * | |
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. | |
29 | * | |
30 | * NO WARRANTY | |
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. | |
42 | */ | |
43 | ||
44 | #include <acpi/acpi.h> | |
45 | #include "accommon.h" | |
46 | ||
47 | #define _COMPONENT ACPI_COMPILER | |
48 | ACPI_MODULE_NAME("utuuid") | |
49 | ||
6306bf88 | 50 | #if (defined ACPI_ASL_COMPILER || defined ACPI_EXEC_APP || defined ACPI_HELP_APP) |
73bbca04 BM |
51 | /* |
52 | * UUID support functions. | |
53 | * | |
54 | * This table is used to convert an input UUID ascii string to a 16 byte | |
55 | * buffer and the reverse. The table maps a UUID buffer index 0-15 to | |
56 | * the index within the 36-byte UUID string where the associated 2-byte | |
57 | * hex value can be found. | |
58 | * | |
59 | * 36-byte UUID strings are of the form: | |
60 | * aabbccdd-eeff-gghh-iijj-kkllmmnnoopp | |
61 | * Where aa-pp are one byte hex numbers, made up of two hex digits | |
62 | * | |
63 | * Note: This table is basically the inverse of the string-to-offset table | |
64 | * found in the ACPI spec in the description of the to_UUID macro. | |
65 | */ | |
66 | const u8 acpi_gbl_map_to_uuid_offset[UUID_BUFFER_LENGTH] = { | |
67 | 6, 4, 2, 0, 11, 9, 16, 14, 19, 21, 24, 26, 28, 30, 32, 34 | |
68 | }; | |
69 | ||
70 | /******************************************************************************* | |
71 | * | |
72 | * FUNCTION: acpi_ut_convert_string_to_uuid | |
73 | * | |
74 | * PARAMETERS: in_string - 36-byte formatted UUID string | |
75 | * uuid_buffer - Where the 16-byte UUID buffer is returned | |
76 | * | |
77 | * RETURN: None. Output data is returned in the uuid_buffer | |
78 | * | |
79 | * DESCRIPTION: Convert a 36-byte formatted UUID string to 16-byte UUID buffer | |
80 | * | |
81 | ******************************************************************************/ | |
82 | ||
83 | void acpi_ut_convert_string_to_uuid(char *in_string, u8 *uuid_buffer) | |
84 | { | |
85 | u32 i; | |
86 | ||
87 | for (i = 0; i < UUID_BUFFER_LENGTH; i++) { | |
88 | uuid_buffer[i] = | |
89 | (acpi_ut_ascii_char_to_hex | |
90 | (in_string[acpi_gbl_map_to_uuid_offset[i]]) << 4); | |
91 | ||
92 | uuid_buffer[i] |= | |
93 | acpi_ut_ascii_char_to_hex(in_string | |
94 | [acpi_gbl_map_to_uuid_offset[i] + | |
95 | 1]); | |
96 | } | |
97 | } | |
6306bf88 | 98 | #endif |