]>
git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/blob - include/linux/tpm.h
2 * Copyright (C) 2004,2007,2008 IBM Corporation
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>
11 * Maintained by: <tpmdd_devel@lists.sourceforge.net>
13 * Device driver for TCG/TCPA TPM (trusted platform module).
14 * Specifications at www.trustedcomputinggroup.org
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
22 #ifndef __LINUX_TPM_H__
23 #define __LINUX_TPM_H__
25 #define TPM_DIGEST_SIZE 20 /* Max TPM v1.2 PCR size */
28 * Chip num is this value or a valid tpm idx
30 #define TPM_ANY_NUM 0xFFFF
33 struct trusted_key_payload
;
34 struct trusted_key_options
;
37 TPM_OPS_AUTO_STARTUP
= BIT(0),
40 struct tpm_class_ops
{
42 const u8 req_complete_mask
;
43 const u8 req_complete_val
;
44 bool (*req_canceled
)(struct tpm_chip
*chip
, u8 status
);
45 int (*recv
) (struct tpm_chip
*chip
, u8
*buf
, size_t len
);
46 int (*send
) (struct tpm_chip
*chip
, u8
*buf
, size_t len
);
47 void (*cancel
) (struct tpm_chip
*chip
);
48 u8 (*status
) (struct tpm_chip
*chip
);
49 bool (*update_timeouts
)(struct tpm_chip
*chip
,
50 unsigned long *timeout_cap
);
51 int (*request_locality
)(struct tpm_chip
*chip
, int loc
);
52 void (*relinquish_locality
)(struct tpm_chip
*chip
, int loc
);
55 #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)
57 extern int tpm_is_tpm2(u32 chip_num
);
58 extern int tpm_pcr_read(u32 chip_num
, int pcr_idx
, u8
*res_buf
);
59 extern int tpm_pcr_extend(u32 chip_num
, int pcr_idx
, const u8
*hash
);
60 extern int tpm_send(u32 chip_num
, void *cmd
, size_t buflen
);
61 extern int tpm_get_random(u32 chip_num
, u8
*data
, size_t max
);
62 extern int tpm_seal_trusted(u32 chip_num
,
63 struct trusted_key_payload
*payload
,
64 struct trusted_key_options
*options
);
65 extern int tpm_unseal_trusted(u32 chip_num
,
66 struct trusted_key_payload
*payload
,
67 struct trusted_key_options
*options
);
69 static inline int tpm_is_tpm2(u32 chip_num
)
73 static inline int tpm_pcr_read(u32 chip_num
, int pcr_idx
, u8
*res_buf
) {
76 static inline int tpm_pcr_extend(u32 chip_num
, int pcr_idx
, const u8
*hash
) {
79 static inline int tpm_send(u32 chip_num
, void *cmd
, size_t buflen
) {
82 static inline int tpm_get_random(u32 chip_num
, u8
*data
, size_t max
) {
86 static inline int tpm_seal_trusted(u32 chip_num
,
87 struct trusted_key_payload
*payload
,
88 struct trusted_key_options
*options
)
92 static inline int tpm_unseal_trusted(u32 chip_num
,
93 struct trusted_key_payload
*payload
,
94 struct trusted_key_options
*options
)