Linux 3.9-rc4
[linux-2.6/cjktty.git] / include / linux / tpm.h
blobfcb627ff8d3eb71ad49ced6763a0ff061b83f62e
1 /*
2 * Copyright (C) 2004,2007,2008 IBM Corporation
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>
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
19 * License.
22 #ifndef __LINUX_TPM_H__
23 #define __LINUX_TPM_H__
26 * Chip num is this value or a valid tpm idx
28 #define TPM_ANY_NUM 0xFFFF
30 #if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)
32 extern int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf);
33 extern int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash);
34 extern int tpm_send(u32 chip_num, void *cmd, size_t buflen);
35 extern int tpm_get_random(u32 chip_num, u8 *data, size_t max);
36 #else
37 static inline int tpm_pcr_read(u32 chip_num, int pcr_idx, u8 *res_buf) {
38 return -ENODEV;
40 static inline int tpm_pcr_extend(u32 chip_num, int pcr_idx, const u8 *hash) {
41 return -ENODEV;
43 static inline int tpm_send(u32 chip_num, void *cmd, size_t buflen) {
44 return -ENODEV;
46 static inline int tpm_get_random(u32 chip_num, u8 *data, size_t max) {
47 return -ENODEV;
49 #endif
50 #endif