]>
Commit | Line | Data |
---|---|---|
f6267998 RC |
1 | /* |
2 | * Copyright (C) 2011 Infineon Technologies | |
3 | * | |
4 | * Authors: | |
5 | * Peter Huewe <huewe.external@infineon.com> | |
6 | * | |
7 | * Version: 2.1.1 | |
8 | * | |
9 | * Description: | |
10 | * Device driver for TCG/TCPA TPM (trusted platform module). | |
11 | * Specifications at www.trustedcomputinggroup.org | |
12 | * | |
13 | * It is based on the Linux kernel driver tpm.c from Leendert van | |
14 | * Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall. | |
15 | * | |
16 | * | |
17 | * See file CREDITS for list of people who contributed to this | |
18 | * project. | |
19 | * | |
20 | * This program is free software; you can redistribute it and/or | |
21 | * modify it under the terms of the GNU General Public License as | |
22 | * published by the Free Software Foundation, version 2 of the | |
23 | * License. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, write to the Free Software | |
32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
33 | * MA 02111-1307 USA | |
34 | */ | |
35 | ||
1b393db5 TWHT |
36 | #ifndef _TPM_PRIVATE_H_ |
37 | #define _TPM_PRIVATE_H_ | |
f6267998 RC |
38 | |
39 | #include <linux/compiler.h> | |
1b393db5 | 40 | #include <linux/types.h> |
f6267998 RC |
41 | |
42 | enum tpm_timeout { | |
43 | TPM_TIMEOUT = 5, /* msecs */ | |
44 | }; | |
45 | ||
46 | /* Size of external transmit buffer (used in tpm_transmit)*/ | |
47 | #define TPM_BUFSIZE 4096 | |
48 | ||
f6267998 | 49 | /* Index of Count field in TPM response buffer */ |
1b393db5 TWHT |
50 | #define TPM_RSP_SIZE_BYTE 2 |
51 | #define TPM_RSP_RC_BYTE 6 | |
f6267998 RC |
52 | |
53 | struct tpm_chip; | |
54 | ||
55 | struct tpm_vendor_specific { | |
56 | const u8 req_complete_mask; | |
57 | const u8 req_complete_val; | |
58 | const u8 req_canceled; | |
59 | int irq; | |
60 | int (*recv) (struct tpm_chip *, u8 *, size_t); | |
61 | int (*send) (struct tpm_chip *, u8 *, size_t); | |
62 | void (*cancel) (struct tpm_chip *); | |
1b393db5 | 63 | u8(*status) (struct tpm_chip *); |
f6267998 | 64 | int locality; |
1b393db5 TWHT |
65 | unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* msec */ |
66 | unsigned long duration[3]; /* msec */ | |
f6267998 RC |
67 | }; |
68 | ||
69 | struct tpm_chip { | |
70 | int is_open; | |
71 | struct tpm_vendor_specific vendor; | |
72 | }; | |
73 | ||
74 | struct tpm_input_header { | |
75 | __be16 tag; | |
76 | __be32 length; | |
77 | __be32 ordinal; | |
78 | } __packed; | |
79 | ||
80 | struct tpm_output_header { | |
81 | __be16 tag; | |
82 | __be32 length; | |
83 | __be32 return_code; | |
84 | } __packed; | |
85 | ||
86 | struct timeout_t { | |
87 | __be32 a; | |
88 | __be32 b; | |
89 | __be32 c; | |
90 | __be32 d; | |
91 | } __packed; | |
92 | ||
93 | struct duration_t { | |
94 | __be32 tpm_short; | |
95 | __be32 tpm_medium; | |
96 | __be32 tpm_long; | |
97 | } __packed; | |
98 | ||
99 | union cap_t { | |
100 | struct timeout_t timeout; | |
101 | struct duration_t duration; | |
102 | }; | |
103 | ||
104 | struct tpm_getcap_params_in { | |
105 | __be32 cap; | |
106 | __be32 subcap_size; | |
107 | __be32 subcap; | |
108 | } __packed; | |
109 | ||
110 | struct tpm_getcap_params_out { | |
111 | __be32 cap_size; | |
112 | union cap_t cap; | |
113 | } __packed; | |
114 | ||
115 | union tpm_cmd_header { | |
116 | struct tpm_input_header in; | |
117 | struct tpm_output_header out; | |
118 | }; | |
119 | ||
120 | union tpm_cmd_params { | |
121 | struct tpm_getcap_params_out getcap_out; | |
122 | struct tpm_getcap_params_in getcap_in; | |
123 | }; | |
124 | ||
125 | struct tpm_cmd_t { | |
126 | union tpm_cmd_header header; | |
127 | union tpm_cmd_params params; | |
128 | } __packed; | |
129 | ||
1b393db5 | 130 | struct tpm_chip *tpm_register_hardware(const struct tpm_vendor_specific *); |
f6267998 | 131 | |
1b393db5 | 132 | int tpm_vendor_init(uint32_t dev_addr); |
f6267998 | 133 | |
1b393db5 | 134 | void tpm_vendor_cleanup(struct tpm_chip *chip); |
f6267998 | 135 | |
f6267998 RC |
136 | |
137 | #endif |