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1 | /* |
2 | * Copyright (C) 2004,2007,2008 IBM Corporation | |
3 | * | |
4 | * Authors: | |
5 | * Leendert van Doorn <leendert@watson.ibm.com> | |
6 | * Dave Safford <safford@watson.ibm.com> | |
7 | * Reiner Sailer <sailer@watson.ibm.com> | |
8 | * Kylene Hall <kjhall@us.ibm.com> | |
9 | * Debora Velarde <dvelarde@us.ibm.com> | |
10 | * | |
11 | * Maintained by: <tpmdd_devel@lists.sourceforge.net> | |
12 | * | |
13 | * Device driver for TCG/TCPA TPM (trusted platform module). | |
14 | * Specifications at www.trustedcomputinggroup.org | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or | |
17 | * modify it under the terms of the GNU General Public License as | |
18 | * published by the Free Software Foundation, version 2 of the | |
19 | * License. | |
20 | * | |
21 | */ | |
22 | #ifndef __LINUX_TPM_H__ | |
23 | #define __LINUX_TPM_H__ | |
24 | ||
1c16c963 MZ |
25 | #define TPM_DIGEST_SIZE 20 /* Max TPM v1.2 PCR size */ |
26 | ||
659aaf2b RA |
27 | /* |
28 | * Chip num is this value or a valid tpm idx | |
29 | */ | |
30 | #define TPM_ANY_NUM 0xFFFF | |
31 | ||
ff76ec18 | 32 | #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE) |
659aaf2b RA |
33 | |
34 | extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf); | |
35 | extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash); | |
c749ba91 | 36 | extern int tpm_send(u32 chip_num, void *cmd, size_t buflen); |
41ab999c | 37 | extern int tpm_get_random(u32 chip_num, u8 *data, size_t max); |
d6ba4521 MZ |
38 | #else |
39 | static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) { | |
40 | return -ENODEV; | |
41 | } | |
42 | static inline int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) { | |
43 | return -ENODEV; | |
44 | } | |
c749ba91 MZ |
45 | static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) { |
46 | return -ENODEV; | |
47 | } | |
41ab999c KY |
48 | static inline int tpm_get_random(u32 chip_num, u8 *data, size_t max) { |
49 | return -ENODEV; | |
50 | } | |
659aaf2b RA |
51 | #endif |
52 | #endif |