projects / mirror_ubuntu-bionic-kernel.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 | ||
| 659aaf2b RA |
27 | /* |
| 28 | * Chip num is this value or a valid tpm idx | |
| 29 | */ | |
| 30 | #define TPM_ANY_NUM 0xFFFF | |
| 31 | ||
| 01ad1fa7 JG |
32 | struct tpm_chip; |
| 33 | ||
| 34 | struct tpm_class_ops { | |
| 35 | const u8 req_complete_mask; | |
| 36 | const u8 req_complete_val; | |
| 37 | bool (*req_canceled)(struct tpm_chip *chip, u8 status); | |
| 38 | int (*recv) (struct tpm_chip *chip, u8 *buf, size_t len); | |
| 39 | int (*send) (struct tpm_chip *chip, u8 *buf, size_t len); | |
| 40 | void (*cancel) (struct tpm_chip *chip); | |
| 41 | u8 (*status) (struct tpm_chip *chip); | |
| 8e54caf4 JG |
42 | bool (*update_timeouts)(struct tpm_chip *chip, |
| 43 | unsigned long *timeout_cap); | |
| 44 | ||
| 01ad1fa7 JG |
45 | }; |
| 46 | ||
| ff76ec18 | 47 | #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE) |
| 659aaf2b RA |
48 | |
| 49 | extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf); | |
| 50 | extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash); | |
| c749ba91 | 51 | extern int tpm_send(u32 chip_num, void *cmd, size_t buflen); |
| 41ab999c | 52 | extern int tpm_get_random(u32 chip_num, u8 *data, size_t max); |
| d6ba4521 MZ |
53 | #else |
| 54 | static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) { | |
| 55 | return -ENODEV; | |
| 56 | } | |
| 57 | static inline int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) { | |
| 58 | return -ENODEV; | |
| 59 | } | |
| c749ba91 MZ |
60 | static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) { |
| 61 | return -ENODEV; | |
| 62 | } | |
| 41ab999c KY |
63 | static inline int tpm_get_random(u32 chip_num, u8 *data, size_t max) { |
| 64 | return -ENODEV; | |
| 65 | } | |
| 659aaf2b RA |
66 | #endif |
| 67 | #endif |