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659aaf2b RA |
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 | ||
01ad1fa7 | 32 | struct tpm_chip; |
954650ef JS |
33 | struct trusted_key_payload; |
34 | struct trusted_key_options; | |
01ad1fa7 JG |
35 | |
36 | struct tpm_class_ops { | |
37 | const u8 req_complete_mask; | |
38 | const u8 req_complete_val; | |
39 | bool (*req_canceled)(struct tpm_chip *chip, u8 status); | |
40 | int (*recv) (struct tpm_chip *chip, u8 *buf, size_t len); | |
41 | int (*send) (struct tpm_chip *chip, u8 *buf, size_t len); | |
42 | void (*cancel) (struct tpm_chip *chip); | |
43 | u8 (*status) (struct tpm_chip *chip); | |
8e54caf4 JG |
44 | bool (*update_timeouts)(struct tpm_chip *chip, |
45 | unsigned long *timeout_cap); | |
46 | ||
01ad1fa7 JG |
47 | }; |
48 | ||
ff76ec18 | 49 | #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE) |
659aaf2b | 50 | |
954650ef | 51 | extern int tpm_is_tpm2(u32 chip_num); |
659aaf2b RA |
52 | extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf); |
53 | extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash); | |
c749ba91 | 54 | extern int tpm_send(u32 chip_num, void *cmd, size_t buflen); |
41ab999c | 55 | extern int tpm_get_random(u32 chip_num, u8 *data, size_t max); |
954650ef JS |
56 | extern int tpm_seal_trusted(u32 chip_num, |
57 | struct trusted_key_payload *payload, | |
58 | struct trusted_key_options *options); | |
59 | extern int tpm_unseal_trusted(u32 chip_num, | |
60 | struct trusted_key_payload *payload, | |
61 | struct trusted_key_options *options); | |
d6ba4521 | 62 | #else |
954650ef JS |
63 | static inline int tpm_is_tpm2(u32 chip_num) |
64 | { | |
65 | return -ENODEV; | |
66 | } | |
d6ba4521 MZ |
67 | static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) { |
68 | return -ENODEV; | |
69 | } | |
70 | static inline int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) { | |
71 | return -ENODEV; | |
72 | } | |
c749ba91 MZ |
73 | static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) { |
74 | return -ENODEV; | |
75 | } | |
41ab999c KY |
76 | static inline int tpm_get_random(u32 chip_num, u8 *data, size_t max) { |
77 | return -ENODEV; | |
78 | } | |
954650ef JS |
79 | |
80 | static inline int tpm_seal_trusted(u32 chip_num, | |
81 | struct trusted_key_payload *payload, | |
82 | struct trusted_key_options *options) | |
83 | { | |
84 | return -ENODEV; | |
85 | } | |
86 | static inline int tpm_unseal_trusted(u32 chip_num, | |
87 | struct trusted_key_payload *payload, | |
88 | struct trusted_key_options *options) | |
89 | { | |
90 | return -ENODEV; | |
91 | } | |
659aaf2b RA |
92 | #endif |
93 | #endif |