1 /*
2 * uuidutil.c
3 *
4 * DSP-BIOS Bridge driver support functions for TI OMAP processors.
5 *
6 * This file contains the implementation of UUID helper functions.
7 *
8 * Copyright (C) 2005-2006 Texas Instruments, Inc.
9 *
10 * This package is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
16 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
17 */
18 #include <linux/types.h>
19
20 /* ----------------------------------- Host OS */
21 #include <dspbridge/host_os.h>
22
23 /* ----------------------------------- DSP/BIOS Bridge */
24 #include <dspbridge/dbdefs.h>
25
26 /* ----------------------------------- Trace & Debug */
27 #include <dspbridge/dbc.h>
28
29 /* ----------------------------------- This */
30 #include <dspbridge/uuidutil.h>
31
32 /*
33 * ======== uuid_uuid_to_string ========
34 * Purpose:
35 * Converts a struct dsp_uuid to a string.
36 * Note: snprintf format specifier is:
37 * %[flags] [width] [.precision] [{h | l | I64 | L}]type
38 */
uuid_uuid_to_string(struct dsp_uuid * uuid_obj,char * sz_uuid,s32 size)39 void uuid_uuid_to_string(struct dsp_uuid *uuid_obj, char *sz_uuid,
40 s32 size)
41 {
42 s32 i; /* return result from snprintf. */
43
44 DBC_REQUIRE(uuid_obj && sz_uuid);
45
46 i = snprintf(sz_uuid, size,
47 "%.8X_%.4X_%.4X_%.2X%.2X_%.2X%.2X%.2X%.2X%.2X%.2X",
48 uuid_obj->data1, uuid_obj->data2, uuid_obj->data3,
49 uuid_obj->data4, uuid_obj->data5,
50 uuid_obj->data6[0], uuid_obj->data6[1],
51 uuid_obj->data6[2], uuid_obj->data6[3],
52 uuid_obj->data6[4], uuid_obj->data6[5]);
53
54 DBC_ENSURE(i != -1);
55 }
56
uuid_hex_to_bin(char * buf,s32 len)57 static s32 uuid_hex_to_bin(char *buf, s32 len)
58 {
59 s32 i;
60 s32 result = 0;
61 int value;
62
63 for (i = 0; i < len; i++) {
64 value = hex_to_bin(*buf++);
65 result *= 16;
66 if (value > 0)
67 result += value;
68 }
69
70 return result;
71 }
72
73 /*
74 * ======== uuid_uuid_from_string ========
75 * Purpose:
76 * Converts a string to a struct dsp_uuid.
77 */
uuid_uuid_from_string(char * sz_uuid,struct dsp_uuid * uuid_obj)78 void uuid_uuid_from_string(char *sz_uuid, struct dsp_uuid *uuid_obj)
79 {
80 s32 j;
81
82 uuid_obj->data1 = uuid_hex_to_bin(sz_uuid, 8);
83 sz_uuid += 8;
84
85 /* Step over underscore */
86 sz_uuid++;
87
88 uuid_obj->data2 = (u16) uuid_hex_to_bin(sz_uuid, 4);
89 sz_uuid += 4;
90
91 /* Step over underscore */
92 sz_uuid++;
93
94 uuid_obj->data3 = (u16) uuid_hex_to_bin(sz_uuid, 4);
95 sz_uuid += 4;
96
97 /* Step over underscore */
98 sz_uuid++;
99
100 uuid_obj->data4 = (u8) uuid_hex_to_bin(sz_uuid, 2);
101 sz_uuid += 2;
102
103 uuid_obj->data5 = (u8) uuid_hex_to_bin(sz_uuid, 2);
104 sz_uuid += 2;
105
106 /* Step over underscore */
107 sz_uuid++;
108
109 for (j = 0; j < 6; j++) {
110 uuid_obj->data6[j] = (u8) uuid_hex_to_bin(sz_uuid, 2);
111 sz_uuid += 2;
112 }
113 }
114