]>
Commit | Line | Data |
---|---|---|
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 | 21 | */ |
d2efee6e CR |
22 | |
23 | #ifndef __TPM_H__ | |
24 | #define __TPM_H__ | |
25 | ||
1da177e4 | 26 | #include <linux/module.h> |
1da177e4 LT |
27 | #include <linux/delay.h> |
28 | #include <linux/fs.h> | |
d081d470 | 29 | #include <linux/mutex.h> |
914e2637 | 30 | #include <linux/sched.h> |
bbc5b212 | 31 | #include <linux/platform_device.h> |
276ad0c1 | 32 | #include <linux/io.h> |
659aaf2b | 33 | #include <linux/tpm.h> |
0dc55365 | 34 | #include <linux/acpi.h> |
313d21ee | 35 | #include <linux/cdev.h> |
a74f8b36 | 36 | #include <linux/highmem.h> |
1da177e4 | 37 | |
748935ee NJ |
38 | #include "tpm_eventlog.h" |
39 | ||
41ab999c KY |
40 | enum tpm_const { |
41 | TPM_MINOR = 224, /* officially assigned */ | |
42 | TPM_BUFSIZE = 4096, | |
15516788 | 43 | TPM_NUM_DEVICES = 65536, |
32d33b29 | 44 | TPM_RETRY = 50, /* 5 seconds */ |
cd9b7631 | 45 | TPM_NUM_EVENT_LOG_FILES = 3, |
41ab999c KY |
46 | }; |
47 | ||
3122a88a KH |
48 | enum tpm_timeout { |
49 | TPM_TIMEOUT = 5, /* msecs */ | |
32d33b29 | 50 | TPM_TIMEOUT_RETRY = 100 /* msecs */ |
3122a88a | 51 | }; |
1da177e4 LT |
52 | |
53 | /* TPM addresses */ | |
3122a88a | 54 | enum tpm_addr { |
daacdfa6 | 55 | TPM_SUPERIO_ADDR = 0x2E, |
3122a88a | 56 | TPM_ADDR = 0x4E, |
3122a88a KH |
57 | }; |
58 | ||
000a07b0 JG |
59 | /* Indexes the duration array */ |
60 | enum tpm_duration { | |
61 | TPM_SHORT = 0, | |
62 | TPM_MEDIUM = 1, | |
63 | TPM_LONG = 2, | |
64 | TPM_UNDEFINED, | |
65 | }; | |
66 | ||
32d33b29 | 67 | #define TPM_WARN_RETRY 0x800 |
68d6e671 | 68 | #define TPM_WARN_DOING_SELFTEST 0x802 |
be405411 SB |
69 | #define TPM_ERR_DEACTIVATED 0x6 |
70 | #define TPM_ERR_DISABLED 0x7 | |
c584af19 | 71 | #define TPM_ERR_INVALID_POSTINIT 38 |
be405411 | 72 | |
b9e3238a | 73 | #define TPM_HEADER_SIZE 10 |
7a1d7e6d JS |
74 | |
75 | enum tpm2_const { | |
76 | TPM2_PLATFORM_PCR = 24, | |
77 | TPM2_PCR_SELECT_MIN = ((TPM2_PLATFORM_PCR + 7) / 8), | |
78 | TPM2_TIMEOUT_A = 750, | |
79 | TPM2_TIMEOUT_B = 2000, | |
80 | TPM2_TIMEOUT_C = 200, | |
81 | TPM2_TIMEOUT_D = 30, | |
82 | TPM2_DURATION_SHORT = 20, | |
83 | TPM2_DURATION_MEDIUM = 750, | |
84 | TPM2_DURATION_LONG = 2000, | |
85 | }; | |
86 | ||
87 | enum tpm2_structures { | |
88 | TPM2_ST_NO_SESSIONS = 0x8001, | |
89 | TPM2_ST_SESSIONS = 0x8002, | |
90 | }; | |
91 | ||
92 | enum tpm2_return_codes { | |
5ca4c20c JS |
93 | TPM2_RC_HASH = 0x0083, /* RC_FMT1 */ |
94 | TPM2_RC_INITIALIZE = 0x0100, /* RC_VER1 */ | |
7a1d7e6d | 95 | TPM2_RC_DISABLED = 0x0120, |
5ca4c20c | 96 | TPM2_RC_TESTING = 0x090A, /* RC_WARN */ |
7a1d7e6d JS |
97 | }; |
98 | ||
99 | enum tpm2_algorithms { | |
100 | TPM2_ALG_SHA1 = 0x0004, | |
954650ef JS |
101 | TPM2_ALG_KEYEDHASH = 0x0008, |
102 | TPM2_ALG_SHA256 = 0x000B, | |
5ca4c20c JS |
103 | TPM2_ALG_SHA384 = 0x000C, |
104 | TPM2_ALG_SHA512 = 0x000D, | |
105 | TPM2_ALG_NULL = 0x0010, | |
106 | TPM2_ALG_SM3_256 = 0x0012, | |
7a1d7e6d JS |
107 | }; |
108 | ||
109 | enum tpm2_command_codes { | |
110 | TPM2_CC_FIRST = 0x011F, | |
111 | TPM2_CC_SELF_TEST = 0x0143, | |
112 | TPM2_CC_STARTUP = 0x0144, | |
113 | TPM2_CC_SHUTDOWN = 0x0145, | |
954650ef JS |
114 | TPM2_CC_CREATE = 0x0153, |
115 | TPM2_CC_LOAD = 0x0157, | |
116 | TPM2_CC_UNSEAL = 0x015E, | |
117 | TPM2_CC_FLUSH_CONTEXT = 0x0165, | |
7a1d7e6d JS |
118 | TPM2_CC_GET_CAPABILITY = 0x017A, |
119 | TPM2_CC_GET_RANDOM = 0x017B, | |
120 | TPM2_CC_PCR_READ = 0x017E, | |
121 | TPM2_CC_PCR_EXTEND = 0x0182, | |
122 | TPM2_CC_LAST = 0x018F, | |
123 | }; | |
124 | ||
125 | enum tpm2_permanent_handles { | |
126 | TPM2_RS_PW = 0x40000009, | |
127 | }; | |
128 | ||
129 | enum tpm2_capabilities { | |
130 | TPM2_CAP_TPM_PROPERTIES = 6, | |
131 | }; | |
132 | ||
133 | enum tpm2_startup_types { | |
134 | TPM2_SU_CLEAR = 0x0000, | |
135 | TPM2_SU_STATE = 0x0001, | |
136 | }; | |
137 | ||
4e401fb0 | 138 | #define TPM_VID_INTEL 0x8086 |
1f866057 SB |
139 | #define TPM_VID_WINBOND 0x1050 |
140 | #define TPM_VID_STM 0x104A | |
4e401fb0 | 141 | |
0dc55365 JS |
142 | #define TPM_PPI_VERSION_LEN 3 |
143 | ||
afb5abc2 | 144 | enum tpm_chip_flags { |
9b774d5c | 145 | TPM_CHIP_FLAG_TPM2 = BIT(1), |
570a3609 | 146 | TPM_CHIP_FLAG_IRQ = BIT(2), |
2f9f5377 | 147 | TPM_CHIP_FLAG_VIRTUAL = BIT(3), |
d1d253cf | 148 | TPM_CHIP_FLAG_HAVE_TIMEOUTS = BIT(4), |
afb5abc2 JS |
149 | }; |
150 | ||
748935ee NJ |
151 | struct tpm_chip_seqops { |
152 | struct tpm_chip *chip; | |
153 | const struct seq_operations *seqops; | |
154 | }; | |
155 | ||
1da177e4 | 156 | struct tpm_chip { |
313d21ee JS |
157 | struct device dev; |
158 | struct cdev cdev; | |
159 | ||
4e26195f JG |
160 | /* A driver callback under ops cannot be run unless ops_sem is held |
161 | * (sometimes implicitly, eg for the sysfs code). ops becomes null | |
162 | * when the driver is unregistered, see tpm_try_get_ops. | |
163 | */ | |
164 | struct rw_semaphore ops_sem; | |
5f82e9f0 | 165 | const struct tpm_class_ops *ops; |
4e26195f | 166 | |
748935ee NJ |
167 | struct tpm_bios_log log; |
168 | struct tpm_chip_seqops bin_log_seqops; | |
169 | struct tpm_chip_seqops ascii_log_seqops; | |
170 | ||
afb5abc2 | 171 | unsigned int flags; |
1da177e4 LT |
172 | |
173 | int dev_num; /* /dev/tpm# */ | |
dc36d32c | 174 | unsigned long is_open; /* only one allowed */ |
1da177e4 | 175 | |
d081d470 | 176 | struct mutex tpm_mutex; /* tpm is processing */ |
1da177e4 | 177 | |
af782f33 CR |
178 | unsigned long timeout_a; /* jiffies */ |
179 | unsigned long timeout_b; /* jiffies */ | |
180 | unsigned long timeout_c; /* jiffies */ | |
181 | unsigned long timeout_d; /* jiffies */ | |
182 | bool timeout_adjusted; | |
183 | unsigned long duration[3]; /* jiffies */ | |
184 | bool duration_adjusted; | |
1da177e4 | 185 | |
cd9b7631 | 186 | struct dentry *bios_dir[TPM_NUM_EVENT_LOG_FILES]; |
55a82ab3 | 187 | |
062807f2 | 188 | const struct attribute_group *groups[3]; |
9b774d5c | 189 | unsigned int groups_cnt; |
062807f2 | 190 | #ifdef CONFIG_ACPI |
0dc55365 JS |
191 | acpi_handle acpi_dev_handle; |
192 | char ppi_version[TPM_PPI_VERSION_LEN + 1]; | |
193 | #endif /* CONFIG_ACPI */ | |
1da177e4 LT |
194 | }; |
195 | ||
9b774d5c | 196 | #define to_tpm_chip(d) container_of(d, struct tpm_chip, dev) |
27084efe | 197 | |
daacdfa6 | 198 | static inline int tpm_read_index(int base, int index) |
1da177e4 | 199 | { |
daacdfa6 KJH |
200 | outb(index, base); |
201 | return inb(base+1) & 0xFF; | |
1da177e4 LT |
202 | } |
203 | ||
daacdfa6 | 204 | static inline void tpm_write_index(int base, int index, int value) |
1da177e4 | 205 | { |
daacdfa6 KJH |
206 | outb(index, base); |
207 | outb(value & 0xFF, base+1); | |
1da177e4 | 208 | } |
08837438 RA |
209 | struct tpm_input_header { |
210 | __be16 tag; | |
211 | __be32 length; | |
212 | __be32 ordinal; | |
348df8db | 213 | } __packed; |
08837438 RA |
214 | |
215 | struct tpm_output_header { | |
216 | __be16 tag; | |
217 | __be32 length; | |
218 | __be32 return_code; | |
348df8db | 219 | } __packed; |
08837438 | 220 | |
000a07b0 JG |
221 | #define TPM_TAG_RQU_COMMAND cpu_to_be16(193) |
222 | ||
08837438 RA |
223 | struct stclear_flags_t { |
224 | __be16 tag; | |
225 | u8 deactivated; | |
226 | u8 disableForceClear; | |
227 | u8 physicalPresence; | |
228 | u8 physicalPresenceLock; | |
229 | u8 bGlobalLock; | |
348df8db | 230 | } __packed; |
08837438 RA |
231 | |
232 | struct tpm_version_t { | |
233 | u8 Major; | |
234 | u8 Minor; | |
235 | u8 revMajor; | |
236 | u8 revMinor; | |
348df8db | 237 | } __packed; |
08837438 RA |
238 | |
239 | struct tpm_version_1_2_t { | |
240 | __be16 tag; | |
241 | u8 Major; | |
242 | u8 Minor; | |
243 | u8 revMajor; | |
244 | u8 revMinor; | |
348df8db | 245 | } __packed; |
08837438 RA |
246 | |
247 | struct timeout_t { | |
248 | __be32 a; | |
249 | __be32 b; | |
250 | __be32 c; | |
251 | __be32 d; | |
348df8db | 252 | } __packed; |
08837438 RA |
253 | |
254 | struct duration_t { | |
255 | __be32 tpm_short; | |
256 | __be32 tpm_medium; | |
257 | __be32 tpm_long; | |
348df8db | 258 | } __packed; |
08837438 RA |
259 | |
260 | struct permanent_flags_t { | |
261 | __be16 tag; | |
262 | u8 disable; | |
263 | u8 ownership; | |
264 | u8 deactivated; | |
265 | u8 readPubek; | |
266 | u8 disableOwnerClear; | |
267 | u8 allowMaintenance; | |
268 | u8 physicalPresenceLifetimeLock; | |
269 | u8 physicalPresenceHWEnable; | |
270 | u8 physicalPresenceCMDEnable; | |
271 | u8 CEKPUsed; | |
272 | u8 TPMpost; | |
273 | u8 TPMpostLock; | |
274 | u8 FIPS; | |
275 | u8 operator; | |
276 | u8 enableRevokeEK; | |
277 | u8 nvLocked; | |
278 | u8 readSRKPub; | |
279 | u8 tpmEstablished; | |
280 | u8 maintenanceDone; | |
281 | u8 disableFullDALogicInfo; | |
348df8db | 282 | } __packed; |
08837438 RA |
283 | |
284 | typedef union { | |
285 | struct permanent_flags_t perm_flags; | |
286 | struct stclear_flags_t stclear_flags; | |
287 | bool owned; | |
288 | __be32 num_pcrs; | |
289 | struct tpm_version_t tpm_version; | |
290 | struct tpm_version_1_2_t tpm_version_1_2; | |
291 | __be32 manufacturer_id; | |
292 | struct timeout_t timeout; | |
293 | struct duration_t duration; | |
294 | } cap_t; | |
295 | ||
000a07b0 | 296 | enum tpm_capabilities { |
84fda152 JS |
297 | TPM_CAP_FLAG = 4, |
298 | TPM_CAP_PROP = 5, | |
299 | TPM_CAP_VERSION_1_1 = 0x06, | |
300 | TPM_CAP_VERSION_1_2 = 0x1A, | |
000a07b0 JG |
301 | }; |
302 | ||
303 | enum tpm_sub_capabilities { | |
84fda152 JS |
304 | TPM_CAP_PROP_PCR = 0x101, |
305 | TPM_CAP_PROP_MANUFACTURER = 0x103, | |
306 | TPM_CAP_FLAG_PERM = 0x108, | |
307 | TPM_CAP_FLAG_VOL = 0x109, | |
308 | TPM_CAP_PROP_OWNER = 0x111, | |
309 | TPM_CAP_PROP_TIS_TIMEOUT = 0x115, | |
310 | TPM_CAP_PROP_TIS_DURATION = 0x120, | |
000a07b0 JG |
311 | }; |
312 | ||
08837438 RA |
313 | struct tpm_getcap_params_in { |
314 | __be32 cap; | |
315 | __be32 subcap_size; | |
316 | __be32 subcap; | |
348df8db | 317 | } __packed; |
08837438 RA |
318 | |
319 | struct tpm_getcap_params_out { | |
320 | __be32 cap_size; | |
321 | cap_t cap; | |
348df8db | 322 | } __packed; |
08837438 RA |
323 | |
324 | struct tpm_readpubek_params_out { | |
325 | u8 algorithm[4]; | |
326 | u8 encscheme[2]; | |
327 | u8 sigscheme[2]; | |
02a077c5 | 328 | __be32 paramsize; |
08837438 RA |
329 | u8 parameters[12]; /*assuming RSA*/ |
330 | __be32 keysize; | |
331 | u8 modulus[256]; | |
332 | u8 checksum[20]; | |
348df8db | 333 | } __packed; |
08837438 RA |
334 | |
335 | typedef union { | |
336 | struct tpm_input_header in; | |
337 | struct tpm_output_header out; | |
338 | } tpm_cmd_header; | |
339 | ||
659aaf2b RA |
340 | struct tpm_pcrread_out { |
341 | u8 pcr_result[TPM_DIGEST_SIZE]; | |
348df8db | 342 | } __packed; |
659aaf2b RA |
343 | |
344 | struct tpm_pcrread_in { | |
345 | __be32 pcr_idx; | |
348df8db | 346 | } __packed; |
659aaf2b RA |
347 | |
348 | struct tpm_pcrextend_in { | |
349 | __be32 pcr_idx; | |
350 | u8 hash[TPM_DIGEST_SIZE]; | |
348df8db | 351 | } __packed; |
659aaf2b | 352 | |
41ab999c KY |
353 | /* 128 bytes is an arbitrary cap. This could be as large as TPM_BUFSIZE - 18 |
354 | * bytes, but 128 is still a relatively large number of random bytes and | |
355 | * anything much bigger causes users of struct tpm_cmd_t to start getting | |
356 | * compiler warnings about stack frame size. */ | |
357 | #define TPM_MAX_RNG_DATA 128 | |
358 | ||
359 | struct tpm_getrandom_out { | |
360 | __be32 rng_data_len; | |
361 | u8 rng_data[TPM_MAX_RNG_DATA]; | |
348df8db | 362 | } __packed; |
41ab999c KY |
363 | |
364 | struct tpm_getrandom_in { | |
365 | __be32 num_bytes; | |
348df8db | 366 | } __packed; |
41ab999c | 367 | |
c584af19 JG |
368 | struct tpm_startup_in { |
369 | __be16 startup_type; | |
370 | } __packed; | |
371 | ||
08837438 RA |
372 | typedef union { |
373 | struct tpm_getcap_params_out getcap_out; | |
374 | struct tpm_readpubek_params_out readpubek_out; | |
375 | u8 readpubek_out_buffer[sizeof(struct tpm_readpubek_params_out)]; | |
376 | struct tpm_getcap_params_in getcap_in; | |
659aaf2b RA |
377 | struct tpm_pcrread_in pcrread_in; |
378 | struct tpm_pcrread_out pcrread_out; | |
379 | struct tpm_pcrextend_in pcrextend_in; | |
41ab999c KY |
380 | struct tpm_getrandom_in getrandom_in; |
381 | struct tpm_getrandom_out getrandom_out; | |
c584af19 | 382 | struct tpm_startup_in startup_in; |
08837438 RA |
383 | } tpm_cmd_params; |
384 | ||
385 | struct tpm_cmd_t { | |
386 | tpm_cmd_header header; | |
387 | tpm_cmd_params params; | |
348df8db | 388 | } __packed; |
08837438 | 389 | |
a74f8b36 JS |
390 | /* A string buffer type for constructing TPM commands. This is based on the |
391 | * ideas of string buffer code in security/keys/trusted.h but is heap based | |
392 | * in order to keep the stack usage minimal. | |
393 | */ | |
394 | ||
395 | enum tpm_buf_flags { | |
396 | TPM_BUF_OVERFLOW = BIT(0), | |
397 | }; | |
398 | ||
399 | struct tpm_buf { | |
400 | struct page *data_page; | |
401 | unsigned int flags; | |
402 | u8 *data; | |
403 | }; | |
404 | ||
954650ef | 405 | static inline int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal) |
a74f8b36 JS |
406 | { |
407 | struct tpm_input_header *head; | |
408 | ||
409 | buf->data_page = alloc_page(GFP_HIGHUSER); | |
410 | if (!buf->data_page) | |
411 | return -ENOMEM; | |
412 | ||
413 | buf->flags = 0; | |
414 | buf->data = kmap(buf->data_page); | |
415 | ||
416 | head = (struct tpm_input_header *) buf->data; | |
417 | ||
418 | head->tag = cpu_to_be16(tag); | |
419 | head->length = cpu_to_be32(sizeof(*head)); | |
420 | head->ordinal = cpu_to_be32(ordinal); | |
421 | ||
422 | return 0; | |
423 | } | |
424 | ||
425 | static inline void tpm_buf_destroy(struct tpm_buf *buf) | |
426 | { | |
427 | kunmap(buf->data_page); | |
428 | __free_page(buf->data_page); | |
429 | } | |
430 | ||
431 | static inline u32 tpm_buf_length(struct tpm_buf *buf) | |
432 | { | |
433 | struct tpm_input_header *head = (struct tpm_input_header *) buf->data; | |
434 | ||
435 | return be32_to_cpu(head->length); | |
436 | } | |
437 | ||
438 | static inline u16 tpm_buf_tag(struct tpm_buf *buf) | |
439 | { | |
440 | struct tpm_input_header *head = (struct tpm_input_header *) buf->data; | |
441 | ||
442 | return be16_to_cpu(head->tag); | |
443 | } | |
444 | ||
445 | static inline void tpm_buf_append(struct tpm_buf *buf, | |
446 | const unsigned char *new_data, | |
447 | unsigned int new_len) | |
448 | { | |
449 | struct tpm_input_header *head = (struct tpm_input_header *) buf->data; | |
450 | u32 len = tpm_buf_length(buf); | |
451 | ||
452 | /* Return silently if overflow has already happened. */ | |
453 | if (buf->flags & TPM_BUF_OVERFLOW) | |
454 | return; | |
455 | ||
456 | if ((len + new_len) > PAGE_SIZE) { | |
457 | WARN(1, "tpm_buf: overflow\n"); | |
458 | buf->flags |= TPM_BUF_OVERFLOW; | |
459 | return; | |
460 | } | |
461 | ||
462 | memcpy(&buf->data[len], new_data, new_len); | |
463 | head->length = cpu_to_be32(len + new_len); | |
464 | } | |
465 | ||
466 | static inline void tpm_buf_append_u8(struct tpm_buf *buf, const u8 value) | |
467 | { | |
468 | tpm_buf_append(buf, &value, 1); | |
469 | } | |
470 | ||
471 | static inline void tpm_buf_append_u16(struct tpm_buf *buf, const u16 value) | |
472 | { | |
473 | __be16 value2 = cpu_to_be16(value); | |
474 | ||
475 | tpm_buf_append(buf, (u8 *) &value2, 2); | |
476 | } | |
477 | ||
478 | static inline void tpm_buf_append_u32(struct tpm_buf *buf, const u32 value) | |
479 | { | |
480 | __be32 value2 = cpu_to_be32(value); | |
481 | ||
482 | tpm_buf_append(buf, (u8 *) &value2, 4); | |
483 | } | |
484 | ||
313d21ee JS |
485 | extern struct class *tpm_class; |
486 | extern dev_t tpm_devt; | |
487 | extern const struct file_operations tpm_fops; | |
15516788 | 488 | extern struct idr dev_nums_idr; |
313d21ee | 489 | |
d4816edf JS |
490 | enum tpm_transmit_flags { |
491 | TPM_TRANSMIT_UNLOCKED = BIT(0), | |
492 | }; | |
493 | ||
494 | ssize_t tpm_transmit(struct tpm_chip *chip, const u8 *buf, size_t bufsiz, | |
495 | unsigned int flags); | |
496 | ssize_t tpm_transmit_cmd(struct tpm_chip *chip, const void *cmd, int len, | |
497 | unsigned int flags, const char *desc); | |
84fda152 | 498 | ssize_t tpm_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap, |
062807f2 | 499 | const char *desc); |
d4abd956 | 500 | int tpm_get_timeouts(struct tpm_chip *); |
cae8b441 | 501 | int tpm1_auto_startup(struct tpm_chip *chip); |
d4abd956 JS |
502 | int tpm_do_selftest(struct tpm_chip *chip); |
503 | unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); | |
504 | int tpm_pm_suspend(struct device *dev); | |
505 | int tpm_pm_resume(struct device *dev); | |
506 | int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, | |
507 | wait_queue_head_t *queue, bool check_cancel); | |
f84fdff0 | 508 | |
afb5abc2 | 509 | struct tpm_chip *tpm_chip_find_get(int chip_num); |
4e26195f JG |
510 | __must_check int tpm_try_get_ops(struct tpm_chip *chip); |
511 | void tpm_put_ops(struct tpm_chip *chip); | |
512 | ||
d4abd956 JS |
513 | struct tpm_chip *tpm_chip_alloc(struct device *dev, |
514 | const struct tpm_class_ops *ops); | |
515 | struct tpm_chip *tpmm_chip_alloc(struct device *pdev, | |
516 | const struct tpm_class_ops *ops); | |
517 | int tpm_chip_register(struct tpm_chip *chip); | |
518 | void tpm_chip_unregister(struct tpm_chip *chip); | |
afb5abc2 | 519 | |
062807f2 | 520 | void tpm_sysfs_add_device(struct tpm_chip *chip); |
afdba32e | 521 | |
000a07b0 JG |
522 | int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf); |
523 | ||
f84fdff0 | 524 | #ifdef CONFIG_ACPI |
9b774d5c | 525 | extern void tpm_add_ppi(struct tpm_chip *chip); |
f84fdff0 | 526 | #else |
9b774d5c | 527 | static inline void tpm_add_ppi(struct tpm_chip *chip) |
1631cfb7 GW |
528 | { |
529 | } | |
f84fdff0 | 530 | #endif |
7a1d7e6d JS |
531 | |
532 | int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf); | |
533 | int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash); | |
534 | int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max); | |
954650ef JS |
535 | int tpm2_seal_trusted(struct tpm_chip *chip, |
536 | struct trusted_key_payload *payload, | |
537 | struct trusted_key_options *options); | |
538 | int tpm2_unseal_trusted(struct tpm_chip *chip, | |
539 | struct trusted_key_payload *payload, | |
540 | struct trusted_key_options *options); | |
7a1d7e6d JS |
541 | ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id, |
542 | u32 *value, const char *desc); | |
543 | ||
cae8b441 | 544 | int tpm2_auto_startup(struct tpm_chip *chip); |
d4abd956 JS |
545 | void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type); |
546 | unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal); | |
d4abd956 | 547 | int tpm2_probe(struct tpm_chip *chip); |
d2efee6e | 548 | #endif |