| | 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 | |
| | 25 | #define TPM_DIGEST_SIZE 20 /* Max TPM v1.2 PCR size */ |
| | 26 | |
| | 27 | /* |
| | 28 | * Chip num is this value or a valid tpm idx |
| | 29 | */ |
| | 30 | #define TPM_ANY_NUM 0xFFFF |
| | 31 | |
| | 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); |
| | 42 | bool (*update_timeouts)(struct tpm_chip *chip, |
| | 43 | unsigned long *timeout_cap); |
| | 44 | |
| | 45 | }; |
| | 46 | |
| | 47 | #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE) |
| | 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); |
| | 51 | extern int tpm_send(u32 chip_num, void *cmd, size_t buflen); |
| | 52 | extern int tpm_get_random(u32 chip_num, u8 *data, size_t max); |
| | 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 | } |
| | 60 | static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) { |
| | 61 | return -ENODEV; |
| | 62 | } |
| | 63 | static inline int tpm_get_random(u32 chip_num, u8 *data, size_t max) { |
| | 64 | return -ENODEV; |
| | 65 | } |
| | 66 | #endif |
| | 67 | #endif |
projects / deliverable / linux.git / blame_incremental