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
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
);
44 #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)
46 extern int tpm_pcr_read(u32 chip_num
, int pcr_idx
, u8
*res_buf
);
47 extern int tpm_pcr_extend(u32 chip_num
, int pcr_idx
, const u8
*hash
);
48 extern int tpm_send(u32 chip_num
, void *cmd
, size_t buflen
);
49 extern int tpm_get_random(u32 chip_num
, u8
*data
, size_t max
);
51 static inline int tpm_pcr_read(u32 chip_num
, int pcr_idx
, u8
*res_buf
) {
54 static inline int tpm_pcr_extend(u32 chip_num
, int pcr_idx
, const u8
*hash
) {
57 static inline int tpm_send(u32 chip_num
, void *cmd
, size_t buflen
) {
60 static inline int tpm_get_random(u32 chip_num
, u8
*data
, size_t max
) {
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