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93 lines
2.7 KiB
93 lines
2.7 KiB
/* |
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* Copyright (C) 2004,2007,2008 IBM Corporation |
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* |
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* Authors: |
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* Leendert van Doorn <leendert@watson.ibm.com> |
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* Dave Safford <safford@watson.ibm.com> |
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* Reiner Sailer <sailer@watson.ibm.com> |
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* Kylene Hall <kjhall@us.ibm.com> |
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* Debora Velarde <dvelarde@us.ibm.com> |
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* |
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* Maintained by: <tpmdd_devel@lists.sourceforge.net> |
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* |
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* Device driver for TCG/TCPA TPM (trusted platform module). |
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* Specifications at www.trustedcomputinggroup.org |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation, version 2 of the |
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* License. |
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* |
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*/ |
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#ifndef __LINUX_TPM_H__ |
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#define __LINUX_TPM_H__ |
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#define TPM_DIGEST_SIZE 20 /* Max TPM v1.2 PCR size */ |
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/* |
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* Chip num is this value or a valid tpm idx |
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*/ |
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#define TPM_ANY_NUM 0xFFFF |
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struct tpm_chip; |
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struct trusted_key_payload; |
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struct trusted_key_options; |
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struct tpm_class_ops { |
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const u8 req_complete_mask; |
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const u8 req_complete_val; |
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bool (*req_canceled)(struct tpm_chip *chip, u8 status); |
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int (*recv) (struct tpm_chip *chip, u8 *buf, size_t len); |
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int (*send) (struct tpm_chip *chip, u8 *buf, size_t len); |
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void (*cancel) (struct tpm_chip *chip); |
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u8 (*status) (struct tpm_chip *chip); |
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bool (*update_timeouts)(struct tpm_chip *chip, |
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unsigned long *timeout_cap); |
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}; |
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#if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE) |
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extern int tpm_is_tpm2(u32 chip_num); |
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extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf); |
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extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash); |
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extern int tpm_send(u32 chip_num, void *cmd, size_t buflen); |
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extern int tpm_get_random(u32 chip_num, u8 *data, size_t max); |
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extern int tpm_seal_trusted(u32 chip_num, |
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struct trusted_key_payload *payload, |
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struct trusted_key_options *options); |
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extern int tpm_unseal_trusted(u32 chip_num, |
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struct trusted_key_payload *payload, |
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struct trusted_key_options *options); |
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#else |
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static inline int tpm_is_tpm2(u32 chip_num) |
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{ |
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return -ENODEV; |
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} |
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static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) { |
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return -ENODEV; |
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} |
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static inline int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) { |
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return -ENODEV; |
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} |
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static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) { |
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return -ENODEV; |
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} |
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static inline int tpm_get_random(u32 chip_num, u8 *data, size_t max) { |
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return -ENODEV; |
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} |
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static inline int tpm_seal_trusted(u32 chip_num, |
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struct trusted_key_payload *payload, |
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struct trusted_key_options *options) |
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{ |
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return -ENODEV; |
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} |
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static inline int tpm_unseal_trusted(u32 chip_num, |
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struct trusted_key_payload *payload, |
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struct trusted_key_options *options) |
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{ |
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return -ENODEV; |
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} |
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#endif |
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#endif
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