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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 2004 IBM Corporation | |
a74f8b36 | 3 | * Copyright (C) 2015 Intel Corporation |
1da177e4 LT |
4 | * |
5 | * Authors: | |
6 | * Leendert van Doorn <leendert@watson.ibm.com> | |
7 | * Dave Safford <safford@watson.ibm.com> | |
8 | * Reiner Sailer <sailer@watson.ibm.com> | |
9 | * Kylene Hall <kjhall@us.ibm.com> | |
10 | * | |
8e81cc13 | 11 | * Maintained by: <tpmdd-devel@lists.sourceforge.net> |
1da177e4 LT |
12 | * |
13 | * Device driver for TCG/TCPA TPM (trusted platform module). | |
3b09825d | 14 | * Specifications at www.trustedcomputinggroup.org |
1da177e4 LT |
15 | * |
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. | |
3b09825d | 20 | * |
1da177e4 LT |
21 | */ |
22 | #include <linux/module.h> | |
1da177e4 LT |
23 | #include <linux/delay.h> |
24 | #include <linux/fs.h> | |
d081d470 | 25 | #include <linux/mutex.h> |
914e2637 | 26 | #include <linux/sched.h> |
bbc5b212 | 27 | #include <linux/platform_device.h> |
276ad0c1 | 28 | #include <linux/io.h> |
659aaf2b | 29 | #include <linux/tpm.h> |
0dc55365 | 30 | #include <linux/acpi.h> |
313d21ee | 31 | #include <linux/cdev.h> |
a74f8b36 | 32 | #include <linux/highmem.h> |
1da177e4 | 33 | |
41ab999c KY |
34 | enum tpm_const { |
35 | TPM_MINOR = 224, /* officially assigned */ | |
36 | TPM_BUFSIZE = 4096, | |
15516788 | 37 | TPM_NUM_DEVICES = 65536, |
32d33b29 | 38 | TPM_RETRY = 50, /* 5 seconds */ |
41ab999c KY |
39 | }; |
40 | ||
3122a88a KH |
41 | enum tpm_timeout { |
42 | TPM_TIMEOUT = 5, /* msecs */ | |
32d33b29 | 43 | TPM_TIMEOUT_RETRY = 100 /* msecs */ |
3122a88a | 44 | }; |
1da177e4 LT |
45 | |
46 | /* TPM addresses */ | |
3122a88a | 47 | enum tpm_addr { |
daacdfa6 | 48 | TPM_SUPERIO_ADDR = 0x2E, |
3122a88a | 49 | TPM_ADDR = 0x4E, |
3122a88a KH |
50 | }; |
51 | ||
000a07b0 JG |
52 | /* Indexes the duration array */ |
53 | enum tpm_duration { | |
54 | TPM_SHORT = 0, | |
55 | TPM_MEDIUM = 1, | |
56 | TPM_LONG = 2, | |
57 | TPM_UNDEFINED, | |
58 | }; | |
59 | ||
32d33b29 | 60 | #define TPM_WARN_RETRY 0x800 |
68d6e671 | 61 | #define TPM_WARN_DOING_SELFTEST 0x802 |
be405411 SB |
62 | #define TPM_ERR_DEACTIVATED 0x6 |
63 | #define TPM_ERR_DISABLED 0x7 | |
c584af19 | 64 | #define TPM_ERR_INVALID_POSTINIT 38 |
be405411 | 65 | |
b9e3238a | 66 | #define TPM_HEADER_SIZE 10 |
7a1d7e6d JS |
67 | |
68 | enum tpm2_const { | |
69 | TPM2_PLATFORM_PCR = 24, | |
70 | TPM2_PCR_SELECT_MIN = ((TPM2_PLATFORM_PCR + 7) / 8), | |
71 | TPM2_TIMEOUT_A = 750, | |
72 | TPM2_TIMEOUT_B = 2000, | |
73 | TPM2_TIMEOUT_C = 200, | |
74 | TPM2_TIMEOUT_D = 30, | |
75 | TPM2_DURATION_SHORT = 20, | |
76 | TPM2_DURATION_MEDIUM = 750, | |
77 | TPM2_DURATION_LONG = 2000, | |
78 | }; | |
79 | ||
80 | enum tpm2_structures { | |
81 | TPM2_ST_NO_SESSIONS = 0x8001, | |
82 | TPM2_ST_SESSIONS = 0x8002, | |
83 | }; | |
84 | ||
85 | enum tpm2_return_codes { | |
5ca4c20c JS |
86 | TPM2_RC_HASH = 0x0083, /* RC_FMT1 */ |
87 | TPM2_RC_INITIALIZE = 0x0100, /* RC_VER1 */ | |
7a1d7e6d | 88 | TPM2_RC_DISABLED = 0x0120, |
5ca4c20c | 89 | TPM2_RC_TESTING = 0x090A, /* RC_WARN */ |
7a1d7e6d JS |
90 | }; |
91 | ||
92 | enum tpm2_algorithms { | |
93 | TPM2_ALG_SHA1 = 0x0004, | |
954650ef JS |
94 | TPM2_ALG_KEYEDHASH = 0x0008, |
95 | TPM2_ALG_SHA256 = 0x000B, | |
5ca4c20c JS |
96 | TPM2_ALG_SHA384 = 0x000C, |
97 | TPM2_ALG_SHA512 = 0x000D, | |
98 | TPM2_ALG_NULL = 0x0010, | |
99 | TPM2_ALG_SM3_256 = 0x0012, | |
7a1d7e6d JS |
100 | }; |
101 | ||
102 | enum tpm2_command_codes { | |
103 | TPM2_CC_FIRST = 0x011F, | |
104 | TPM2_CC_SELF_TEST = 0x0143, | |
105 | TPM2_CC_STARTUP = 0x0144, | |
106 | TPM2_CC_SHUTDOWN = 0x0145, | |
954650ef JS |
107 | TPM2_CC_CREATE = 0x0153, |
108 | TPM2_CC_LOAD = 0x0157, | |
109 | TPM2_CC_UNSEAL = 0x015E, | |
110 | TPM2_CC_FLUSH_CONTEXT = 0x0165, | |
7a1d7e6d JS |
111 | TPM2_CC_GET_CAPABILITY = 0x017A, |
112 | TPM2_CC_GET_RANDOM = 0x017B, | |
113 | TPM2_CC_PCR_READ = 0x017E, | |
114 | TPM2_CC_PCR_EXTEND = 0x0182, | |
115 | TPM2_CC_LAST = 0x018F, | |
116 | }; | |
117 | ||
118 | enum tpm2_permanent_handles { | |
119 | TPM2_RS_PW = 0x40000009, | |
120 | }; | |
121 | ||
122 | enum tpm2_capabilities { | |
123 | TPM2_CAP_TPM_PROPERTIES = 6, | |
124 | }; | |
125 | ||
126 | enum tpm2_startup_types { | |
127 | TPM2_SU_CLEAR = 0x0000, | |
128 | TPM2_SU_STATE = 0x0001, | |
129 | }; | |
130 | ||
4e401fb0 | 131 | #define TPM_VID_INTEL 0x8086 |
1f866057 SB |
132 | #define TPM_VID_WINBOND 0x1050 |
133 | #define TPM_VID_STM 0x104A | |
4e401fb0 | 134 | |
0dc55365 JS |
135 | #define TPM_PPI_VERSION_LEN 3 |
136 | ||
afb5abc2 JS |
137 | enum tpm_chip_flags { |
138 | TPM_CHIP_FLAG_REGISTERED = BIT(0), | |
9b774d5c | 139 | TPM_CHIP_FLAG_TPM2 = BIT(1), |
570a3609 | 140 | TPM_CHIP_FLAG_IRQ = BIT(2), |
2f9f5377 | 141 | TPM_CHIP_FLAG_VIRTUAL = BIT(3), |
afb5abc2 JS |
142 | }; |
143 | ||
1da177e4 | 144 | struct tpm_chip { |
313d21ee JS |
145 | struct device dev; |
146 | struct cdev cdev; | |
147 | ||
4e26195f JG |
148 | /* A driver callback under ops cannot be run unless ops_sem is held |
149 | * (sometimes implicitly, eg for the sysfs code). ops becomes null | |
150 | * when the driver is unregistered, see tpm_try_get_ops. | |
151 | */ | |
152 | struct rw_semaphore ops_sem; | |
5f82e9f0 | 153 | const struct tpm_class_ops *ops; |
4e26195f | 154 | |
afb5abc2 | 155 | unsigned int flags; |
1da177e4 LT |
156 | |
157 | int dev_num; /* /dev/tpm# */ | |
dc36d32c | 158 | unsigned long is_open; /* only one allowed */ |
1da177e4 | 159 | |
d081d470 | 160 | struct mutex tpm_mutex; /* tpm is processing */ |
1da177e4 | 161 | |
af782f33 CR |
162 | unsigned long timeout_a; /* jiffies */ |
163 | unsigned long timeout_b; /* jiffies */ | |
164 | unsigned long timeout_c; /* jiffies */ | |
165 | unsigned long timeout_d; /* jiffies */ | |
166 | bool timeout_adjusted; | |
167 | unsigned long duration[3]; /* jiffies */ | |
168 | bool duration_adjusted; | |
1da177e4 | 169 | |
55a82ab3 KJH |
170 | struct dentry **bios_dir; |
171 | ||
062807f2 | 172 | const struct attribute_group *groups[3]; |
9b774d5c | 173 | unsigned int groups_cnt; |
062807f2 | 174 | #ifdef CONFIG_ACPI |
0dc55365 JS |
175 | acpi_handle acpi_dev_handle; |
176 | char ppi_version[TPM_PPI_VERSION_LEN + 1]; | |
177 | #endif /* CONFIG_ACPI */ | |
1da177e4 LT |
178 | }; |
179 | ||
9b774d5c | 180 | #define to_tpm_chip(d) container_of(d, struct tpm_chip, dev) |
27084efe | 181 | |
daacdfa6 | 182 | static inline int tpm_read_index(int base, int index) |
1da177e4 | 183 | { |
daacdfa6 KJH |
184 | outb(index, base); |
185 | return inb(base+1) & 0xFF; | |
1da177e4 LT |
186 | } |
187 | ||
daacdfa6 | 188 | static inline void tpm_write_index(int base, int index, int value) |
1da177e4 | 189 | { |
daacdfa6 KJH |
190 | outb(index, base); |
191 | outb(value & 0xFF, base+1); | |
1da177e4 | 192 | } |
08837438 RA |
193 | struct tpm_input_header { |
194 | __be16 tag; | |
195 | __be32 length; | |
196 | __be32 ordinal; | |
348df8db | 197 | } __packed; |
08837438 RA |
198 | |
199 | struct tpm_output_header { | |
200 | __be16 tag; | |
201 | __be32 length; | |
202 | __be32 return_code; | |
348df8db | 203 | } __packed; |
08837438 | 204 | |
000a07b0 JG |
205 | #define TPM_TAG_RQU_COMMAND cpu_to_be16(193) |
206 | ||
08837438 RA |
207 | struct stclear_flags_t { |
208 | __be16 tag; | |
209 | u8 deactivated; | |
210 | u8 disableForceClear; | |
211 | u8 physicalPresence; | |
212 | u8 physicalPresenceLock; | |
213 | u8 bGlobalLock; | |
348df8db | 214 | } __packed; |
08837438 RA |
215 | |
216 | struct tpm_version_t { | |
217 | u8 Major; | |
218 | u8 Minor; | |
219 | u8 revMajor; | |
220 | u8 revMinor; | |
348df8db | 221 | } __packed; |
08837438 RA |
222 | |
223 | struct tpm_version_1_2_t { | |
224 | __be16 tag; | |
225 | u8 Major; | |
226 | u8 Minor; | |
227 | u8 revMajor; | |
228 | u8 revMinor; | |
348df8db | 229 | } __packed; |
08837438 RA |
230 | |
231 | struct timeout_t { | |
232 | __be32 a; | |
233 | __be32 b; | |
234 | __be32 c; | |
235 | __be32 d; | |
348df8db | 236 | } __packed; |
08837438 RA |
237 | |
238 | struct duration_t { | |
239 | __be32 tpm_short; | |
240 | __be32 tpm_medium; | |
241 | __be32 tpm_long; | |
348df8db | 242 | } __packed; |
08837438 RA |
243 | |
244 | struct permanent_flags_t { | |
245 | __be16 tag; | |
246 | u8 disable; | |
247 | u8 ownership; | |
248 | u8 deactivated; | |
249 | u8 readPubek; | |
250 | u8 disableOwnerClear; | |
251 | u8 allowMaintenance; | |
252 | u8 physicalPresenceLifetimeLock; | |
253 | u8 physicalPresenceHWEnable; | |
254 | u8 physicalPresenceCMDEnable; | |
255 | u8 CEKPUsed; | |
256 | u8 TPMpost; | |
257 | u8 TPMpostLock; | |
258 | u8 FIPS; | |
259 | u8 operator; | |
260 | u8 enableRevokeEK; | |
261 | u8 nvLocked; | |
262 | u8 readSRKPub; | |
263 | u8 tpmEstablished; | |
264 | u8 maintenanceDone; | |
265 | u8 disableFullDALogicInfo; | |
348df8db | 266 | } __packed; |
08837438 RA |
267 | |
268 | typedef union { | |
269 | struct permanent_flags_t perm_flags; | |
270 | struct stclear_flags_t stclear_flags; | |
271 | bool owned; | |
272 | __be32 num_pcrs; | |
273 | struct tpm_version_t tpm_version; | |
274 | struct tpm_version_1_2_t tpm_version_1_2; | |
275 | __be32 manufacturer_id; | |
276 | struct timeout_t timeout; | |
277 | struct duration_t duration; | |
278 | } cap_t; | |
279 | ||
000a07b0 JG |
280 | enum tpm_capabilities { |
281 | TPM_CAP_FLAG = cpu_to_be32(4), | |
282 | TPM_CAP_PROP = cpu_to_be32(5), | |
283 | CAP_VERSION_1_1 = cpu_to_be32(0x06), | |
284 | CAP_VERSION_1_2 = cpu_to_be32(0x1A) | |
285 | }; | |
286 | ||
287 | enum tpm_sub_capabilities { | |
288 | TPM_CAP_PROP_PCR = cpu_to_be32(0x101), | |
289 | TPM_CAP_PROP_MANUFACTURER = cpu_to_be32(0x103), | |
290 | TPM_CAP_FLAG_PERM = cpu_to_be32(0x108), | |
291 | TPM_CAP_FLAG_VOL = cpu_to_be32(0x109), | |
292 | TPM_CAP_PROP_OWNER = cpu_to_be32(0x111), | |
293 | TPM_CAP_PROP_TIS_TIMEOUT = cpu_to_be32(0x115), | |
294 | TPM_CAP_PROP_TIS_DURATION = cpu_to_be32(0x120), | |
295 | ||
296 | }; | |
297 | ||
08837438 RA |
298 | struct tpm_getcap_params_in { |
299 | __be32 cap; | |
300 | __be32 subcap_size; | |
301 | __be32 subcap; | |
348df8db | 302 | } __packed; |
08837438 RA |
303 | |
304 | struct tpm_getcap_params_out { | |
305 | __be32 cap_size; | |
306 | cap_t cap; | |
348df8db | 307 | } __packed; |
08837438 RA |
308 | |
309 | struct tpm_readpubek_params_out { | |
310 | u8 algorithm[4]; | |
311 | u8 encscheme[2]; | |
312 | u8 sigscheme[2]; | |
02a077c5 | 313 | __be32 paramsize; |
08837438 RA |
314 | u8 parameters[12]; /*assuming RSA*/ |
315 | __be32 keysize; | |
316 | u8 modulus[256]; | |
317 | u8 checksum[20]; | |
348df8db | 318 | } __packed; |
08837438 RA |
319 | |
320 | typedef union { | |
321 | struct tpm_input_header in; | |
322 | struct tpm_output_header out; | |
323 | } tpm_cmd_header; | |
324 | ||
659aaf2b RA |
325 | struct tpm_pcrread_out { |
326 | u8 pcr_result[TPM_DIGEST_SIZE]; | |
348df8db | 327 | } __packed; |
659aaf2b RA |
328 | |
329 | struct tpm_pcrread_in { | |
330 | __be32 pcr_idx; | |
348df8db | 331 | } __packed; |
659aaf2b RA |
332 | |
333 | struct tpm_pcrextend_in { | |
334 | __be32 pcr_idx; | |
335 | u8 hash[TPM_DIGEST_SIZE]; | |
348df8db | 336 | } __packed; |
659aaf2b | 337 | |
41ab999c KY |
338 | /* 128 bytes is an arbitrary cap. This could be as large as TPM_BUFSIZE - 18 |
339 | * bytes, but 128 is still a relatively large number of random bytes and | |
340 | * anything much bigger causes users of struct tpm_cmd_t to start getting | |
341 | * compiler warnings about stack frame size. */ | |
342 | #define TPM_MAX_RNG_DATA 128 | |
343 | ||
344 | struct tpm_getrandom_out { | |
345 | __be32 rng_data_len; | |
346 | u8 rng_data[TPM_MAX_RNG_DATA]; | |
348df8db | 347 | } __packed; |
41ab999c KY |
348 | |
349 | struct tpm_getrandom_in { | |
350 | __be32 num_bytes; | |
348df8db | 351 | } __packed; |
41ab999c | 352 | |
c584af19 JG |
353 | struct tpm_startup_in { |
354 | __be16 startup_type; | |
355 | } __packed; | |
356 | ||
08837438 RA |
357 | typedef union { |
358 | struct tpm_getcap_params_out getcap_out; | |
359 | struct tpm_readpubek_params_out readpubek_out; | |
360 | u8 readpubek_out_buffer[sizeof(struct tpm_readpubek_params_out)]; | |
361 | struct tpm_getcap_params_in getcap_in; | |
659aaf2b RA |
362 | struct tpm_pcrread_in pcrread_in; |
363 | struct tpm_pcrread_out pcrread_out; | |
364 | struct tpm_pcrextend_in pcrextend_in; | |
41ab999c KY |
365 | struct tpm_getrandom_in getrandom_in; |
366 | struct tpm_getrandom_out getrandom_out; | |
c584af19 | 367 | struct tpm_startup_in startup_in; |
08837438 RA |
368 | } tpm_cmd_params; |
369 | ||
370 | struct tpm_cmd_t { | |
371 | tpm_cmd_header header; | |
372 | tpm_cmd_params params; | |
348df8db | 373 | } __packed; |
08837438 | 374 | |
a74f8b36 JS |
375 | /* A string buffer type for constructing TPM commands. This is based on the |
376 | * ideas of string buffer code in security/keys/trusted.h but is heap based | |
377 | * in order to keep the stack usage minimal. | |
378 | */ | |
379 | ||
380 | enum tpm_buf_flags { | |
381 | TPM_BUF_OVERFLOW = BIT(0), | |
382 | }; | |
383 | ||
384 | struct tpm_buf { | |
385 | struct page *data_page; | |
386 | unsigned int flags; | |
387 | u8 *data; | |
388 | }; | |
389 | ||
954650ef | 390 | static inline int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal) |
a74f8b36 JS |
391 | { |
392 | struct tpm_input_header *head; | |
393 | ||
394 | buf->data_page = alloc_page(GFP_HIGHUSER); | |
395 | if (!buf->data_page) | |
396 | return -ENOMEM; | |
397 | ||
398 | buf->flags = 0; | |
399 | buf->data = kmap(buf->data_page); | |
400 | ||
401 | head = (struct tpm_input_header *) buf->data; | |
402 | ||
403 | head->tag = cpu_to_be16(tag); | |
404 | head->length = cpu_to_be32(sizeof(*head)); | |
405 | head->ordinal = cpu_to_be32(ordinal); | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | static inline void tpm_buf_destroy(struct tpm_buf *buf) | |
411 | { | |
412 | kunmap(buf->data_page); | |
413 | __free_page(buf->data_page); | |
414 | } | |
415 | ||
416 | static inline u32 tpm_buf_length(struct tpm_buf *buf) | |
417 | { | |
418 | struct tpm_input_header *head = (struct tpm_input_header *) buf->data; | |
419 | ||
420 | return be32_to_cpu(head->length); | |
421 | } | |
422 | ||
423 | static inline u16 tpm_buf_tag(struct tpm_buf *buf) | |
424 | { | |
425 | struct tpm_input_header *head = (struct tpm_input_header *) buf->data; | |
426 | ||
427 | return be16_to_cpu(head->tag); | |
428 | } | |
429 | ||
430 | static inline void tpm_buf_append(struct tpm_buf *buf, | |
431 | const unsigned char *new_data, | |
432 | unsigned int new_len) | |
433 | { | |
434 | struct tpm_input_header *head = (struct tpm_input_header *) buf->data; | |
435 | u32 len = tpm_buf_length(buf); | |
436 | ||
437 | /* Return silently if overflow has already happened. */ | |
438 | if (buf->flags & TPM_BUF_OVERFLOW) | |
439 | return; | |
440 | ||
441 | if ((len + new_len) > PAGE_SIZE) { | |
442 | WARN(1, "tpm_buf: overflow\n"); | |
443 | buf->flags |= TPM_BUF_OVERFLOW; | |
444 | return; | |
445 | } | |
446 | ||
447 | memcpy(&buf->data[len], new_data, new_len); | |
448 | head->length = cpu_to_be32(len + new_len); | |
449 | } | |
450 | ||
451 | static inline void tpm_buf_append_u8(struct tpm_buf *buf, const u8 value) | |
452 | { | |
453 | tpm_buf_append(buf, &value, 1); | |
454 | } | |
455 | ||
456 | static inline void tpm_buf_append_u16(struct tpm_buf *buf, const u16 value) | |
457 | { | |
458 | __be16 value2 = cpu_to_be16(value); | |
459 | ||
460 | tpm_buf_append(buf, (u8 *) &value2, 2); | |
461 | } | |
462 | ||
463 | static inline void tpm_buf_append_u32(struct tpm_buf *buf, const u32 value) | |
464 | { | |
465 | __be32 value2 = cpu_to_be32(value); | |
466 | ||
467 | tpm_buf_append(buf, (u8 *) &value2, 4); | |
468 | } | |
469 | ||
313d21ee JS |
470 | extern struct class *tpm_class; |
471 | extern dev_t tpm_devt; | |
472 | extern const struct file_operations tpm_fops; | |
15516788 | 473 | extern struct idr dev_nums_idr; |
313d21ee | 474 | |
062807f2 JG |
475 | ssize_t tpm_getcap(struct tpm_chip *chip, __be32 subcap_id, cap_t *cap, |
476 | const char *desc); | |
afdba32e JG |
477 | ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, |
478 | size_t bufsiz); | |
87155b73 JS |
479 | ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd, int len, |
480 | const char *desc); | |
2b30a90f | 481 | extern int tpm_get_timeouts(struct tpm_chip *); |
08e96e48 | 482 | extern void tpm_gen_interrupt(struct tpm_chip *); |
68d6e671 | 483 | extern int tpm_do_selftest(struct tpm_chip *); |
9e18ee19 | 484 | extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32); |
035e2ce8 | 485 | extern int tpm_pm_suspend(struct device *); |
ce2c87d4 | 486 | extern int tpm_pm_resume(struct device *); |
fd048866 | 487 | extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long, |
78f09cc2 | 488 | wait_queue_head_t *, bool); |
f84fdff0 | 489 | |
afb5abc2 | 490 | struct tpm_chip *tpm_chip_find_get(int chip_num); |
4e26195f JG |
491 | __must_check int tpm_try_get_ops(struct tpm_chip *chip); |
492 | void tpm_put_ops(struct tpm_chip *chip); | |
493 | ||
3897cd9c JG |
494 | extern struct tpm_chip *tpm_chip_alloc(struct device *dev, |
495 | const struct tpm_class_ops *ops); | |
496 | extern struct tpm_chip *tpmm_chip_alloc(struct device *pdev, | |
afb5abc2 JS |
497 | const struct tpm_class_ops *ops); |
498 | extern int tpm_chip_register(struct tpm_chip *chip); | |
499 | extern void tpm_chip_unregister(struct tpm_chip *chip); | |
500 | ||
062807f2 | 501 | void tpm_sysfs_add_device(struct tpm_chip *chip); |
afdba32e | 502 | |
000a07b0 JG |
503 | int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf); |
504 | ||
f84fdff0 | 505 | #ifdef CONFIG_ACPI |
9b774d5c | 506 | extern void tpm_add_ppi(struct tpm_chip *chip); |
f84fdff0 | 507 | #else |
9b774d5c | 508 | static inline void tpm_add_ppi(struct tpm_chip *chip) |
1631cfb7 GW |
509 | { |
510 | } | |
f84fdff0 | 511 | #endif |
7a1d7e6d JS |
512 | |
513 | int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf); | |
514 | int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash); | |
515 | int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max); | |
954650ef JS |
516 | int tpm2_seal_trusted(struct tpm_chip *chip, |
517 | struct trusted_key_payload *payload, | |
518 | struct trusted_key_options *options); | |
519 | int tpm2_unseal_trusted(struct tpm_chip *chip, | |
520 | struct trusted_key_payload *payload, | |
521 | struct trusted_key_options *options); | |
7a1d7e6d JS |
522 | ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id, |
523 | u32 *value, const char *desc); | |
524 | ||
525 | extern int tpm2_startup(struct tpm_chip *chip, u16 startup_type); | |
74d6b3ce | 526 | extern void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type); |
7a1d7e6d JS |
527 | extern unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *, u32); |
528 | extern int tpm2_do_selftest(struct tpm_chip *chip); | |
4d5f2051 JS |
529 | extern int tpm2_gen_interrupt(struct tpm_chip *chip); |
530 | extern int tpm2_probe(struct tpm_chip *chip); |