projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 01ad1fa7 | 27 | struct tpm_chip; |
| 954650ef JS |
28 | struct trusted_key_payload; |
| 29 | struct trusted_key_options; | |
| 01ad1fa7 | 30 | |
| cae8b441 JG |
31 | enum TPM_OPS_FLAGS { |
| 32 | TPM_OPS_AUTO_STARTUP = BIT(0), | |
| 33 | }; | |
| 34 | ||
| 01ad1fa7 | 35 | struct tpm_class_ops { |
| cae8b441 | 36 | unsigned int flags; |
| 01ad1fa7 JG |
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); | |
| 877c57d0 JS |
46 | int (*request_locality)(struct tpm_chip *chip, int loc); |
| 47 | void (*relinquish_locality)(struct tpm_chip *chip, int loc); | |
| b3e958ce | 48 | void (*clk_enable)(struct tpm_chip *chip, bool value); |
| 01ad1fa7 JG |
49 | }; |
| 50 | ||
| ff76ec18 | 51 | #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE) |
| 659aaf2b | 52 | |
| aad887f6 JS |
53 | extern int tpm_is_tpm2(struct tpm_chip *chip); |
| 54 | extern int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf); | |
| 55 | extern int tpm_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash); | |
| 56 | extern int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen); | |
| 57 | extern int tpm_get_random(struct tpm_chip *chip, u8 *data, size_t max); | |
| 58 | extern int tpm_seal_trusted(struct tpm_chip *chip, | |
| 954650ef JS |
59 | struct trusted_key_payload *payload, |
| 60 | struct trusted_key_options *options); | |
| aad887f6 | 61 | extern int tpm_unseal_trusted(struct tpm_chip *chip, |
| 954650ef JS |
62 | struct trusted_key_payload *payload, |
| 63 | struct trusted_key_options *options); | |
| d6ba4521 | 64 | #else |
| aad887f6 | 65 | static inline int tpm_is_tpm2(struct tpm_chip *chip) |
| 954650ef JS |
66 | { |
| 67 | return -ENODEV; | |
| 68 | } | |
| aad887f6 JS |
69 | static inline int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf) |
| 70 | { | |
| d6ba4521 MZ |
71 | return -ENODEV; |
| 72 | } | |
| aad887f6 JS |
73 | static inline int tpm_pcr_extend(struct tpm_chip *chip, int pcr_idx, |
| 74 | const u8 *hash) | |
| 75 | { | |
| d6ba4521 MZ |
76 | return -ENODEV; |
| 77 | } | |
| aad887f6 JS |
78 | static inline int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen) |
| 79 | { | |
| c749ba91 MZ |
80 | return -ENODEV; |
| 81 | } | |
| aad887f6 JS |
82 | static inline int tpm_get_random(struct tpm_chip *chip, u8 *data, size_t max) |
| 83 | { | |
| 41ab999c KY |
84 | return -ENODEV; |
| 85 | } | |
| 954650ef | 86 | |
| aad887f6 | 87 | static inline int tpm_seal_trusted(struct tpm_chip *chip, |
| 954650ef JS |
88 | struct trusted_key_payload *payload, |
| 89 | struct trusted_key_options *options) | |
| 90 | { | |
| 91 | return -ENODEV; | |
| 92 | } | |
| aad887f6 | 93 | static inline int tpm_unseal_trusted(struct tpm_chip *chip, |
| 954650ef JS |
94 | struct trusted_key_payload *payload, |
| 95 | struct trusted_key_options *options) | |
| 96 | { | |
| 97 | return -ENODEV; | |
| 98 | } | |
| 659aaf2b RA |
99 | #endif |
| 100 | #endif |