[deliverable/linux.git] / drivers / char / tpm / tpm.h

/*
 * Copyright (C) 2004 IBM Corporation
 *
 * Authors:
 * Leendert van Doorn <leendert@watson.ibm.com>
 * Dave Safford <safford@watson.ibm.com>
 * Reiner Sailer <sailer@watson.ibm.com>
 * Kylene Hall <kjhall@us.ibm.com>
 *
 * Maintained by: <tpmdd-devel@lists.sourceforge.net>
 *
 * Device driver for TCG/TCPA TPM (trusted platform module).
 * Specifications at www.trustedcomputinggroup.org	 
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, version 2 of the
 * License.
 * 
 */
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/mutex.h>
#include <linux/sched.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/tpm.h>
#include <linux/acpi.h>
#include <linux/cdev.h>

enum tpm_const {
	TPM_MINOR = 224,	/* officially assigned */
	TPM_BUFSIZE = 4096,
	TPM_NUM_DEVICES = 256,
	TPM_RETRY = 50,		/* 5 seconds */
};

enum tpm_timeout {
	TPM_TIMEOUT = 5,	/* msecs */
	TPM_TIMEOUT_RETRY = 100 /* msecs */
};

/* TPM addresses */
enum tpm_addr {
	TPM_SUPERIO_ADDR = 0x2E,
	TPM_ADDR = 0x4E,
};

/* Indexes the duration array */
enum tpm_duration {
	TPM_SHORT = 0,
	TPM_MEDIUM = 1,
	TPM_LONG = 2,
	TPM_UNDEFINED,
};

#define TPM_WARN_RETRY          0x800
#define TPM_WARN_DOING_SELFTEST 0x802
#define TPM_ERR_DEACTIVATED     0x6
#define TPM_ERR_DISABLED        0x7
#define TPM_ERR_INVALID_POSTINIT 38

#define TPM_HEADER_SIZE		10
struct tpm_chip;

struct tpm_vendor_specific {
	void __iomem *iobase;		/* ioremapped address */
	unsigned long base;		/* TPM base address */

	int irq;
	int probed_irq;

	int region_size;
	int have_region;

	struct list_head list;
	int locality;
	unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */
	bool timeout_adjusted;
	unsigned long duration[3]; /* jiffies */
	bool duration_adjusted;
	void *priv;

	wait_queue_head_t read_queue;
	wait_queue_head_t int_queue;

	u16 manufacturer_id;
};

#define TPM_VPRIV(c)	(c)->vendor.priv

#define TPM_VID_INTEL    0x8086
#define TPM_VID_WINBOND  0x1050
#define TPM_VID_STM      0x104A

#define TPM_PPI_VERSION_LEN		3

enum tpm_chip_flags {
	TPM_CHIP_FLAG_REGISTERED	= BIT(0),
	TPM_CHIP_FLAG_PPI		= BIT(1),
};

struct tpm_chip {
	struct device *pdev;	/* Device stuff */
	struct device dev;
	struct cdev cdev;

	const struct tpm_class_ops *ops;
	unsigned int flags;

	int dev_num;		/* /dev/tpm# */
	char devname[7];
	unsigned long is_open;	/* only one allowed */
	int time_expired;

	struct mutex tpm_mutex;	/* tpm is processing */

	struct tpm_vendor_specific vendor;

	struct dentry **bios_dir;

#ifdef CONFIG_ACPI
	acpi_handle acpi_dev_handle;
	char ppi_version[TPM_PPI_VERSION_LEN + 1];
#endif /* CONFIG_ACPI */

	struct list_head list;
};

#define to_tpm_chip(n) container_of(n, struct tpm_chip, vendor)

static inline void tpm_chip_put(struct tpm_chip *chip)
{
	module_put(chip->pdev->driver->owner);
}

static inline int tpm_read_index(int base, int index)
{
	outb(index, base);
	return inb(base+1) & 0xFF;
}

static inline void tpm_write_index(int base, int index, int value)
{
	outb(index, base);
	outb(value & 0xFF, base+1);
}
struct tpm_input_header {
	__be16	tag;
	__be32	length;
	__be32	ordinal;
} __packed;

struct tpm_output_header {
	__be16	tag;
	__be32	length;
	__be32	return_code;
} __packed;

#define TPM_TAG_RQU_COMMAND cpu_to_be16(193)

struct	stclear_flags_t {
	__be16	tag;
	u8	deactivated;
	u8	disableForceClear;
	u8	physicalPresence;
	u8	physicalPresenceLock;
	u8	bGlobalLock;
} __packed;

struct	tpm_version_t {
	u8	Major;
	u8	Minor;
	u8	revMajor;
	u8	revMinor;
} __packed;

struct	tpm_version_1_2_t {
	__be16	tag;
	u8	Major;
	u8	Minor;
	u8	revMajor;
	u8	revMinor;
} __packed;

struct	timeout_t {
	__be32	a;
	__be32	b;
	__be32	c;
	__be32	d;
} __packed;

struct duration_t {
	__be32	tpm_short;
	__be32	tpm_medium;
	__be32	tpm_long;
} __packed;

struct permanent_flags_t {
	__be16	tag;
	u8	disable;
	u8	ownership;
	u8	deactivated;
	u8	readPubek;
	u8	disableOwnerClear;
	u8	allowMaintenance;
	u8	physicalPresenceLifetimeLock;
	u8	physicalPresenceHWEnable;
	u8	physicalPresenceCMDEnable;
	u8	CEKPUsed;
	u8	TPMpost;
	u8	TPMpostLock;
	u8	FIPS;
	u8	operator;
	u8	enableRevokeEK;
	u8	nvLocked;
	u8	readSRKPub;
	u8	tpmEstablished;
	u8	maintenanceDone;
	u8	disableFullDALogicInfo;
} __packed;

typedef union {
	struct	permanent_flags_t perm_flags;
	struct	stclear_flags_t	stclear_flags;
	bool	owned;
	__be32	num_pcrs;
	struct	tpm_version_t	tpm_version;
	struct	tpm_version_1_2_t tpm_version_1_2;
	__be32	manufacturer_id;
	struct timeout_t  timeout;
	struct duration_t duration;
} cap_t;

enum tpm_capabilities {
	TPM_CAP_FLAG = cpu_to_be32(4),
	TPM_CAP_PROP = cpu_to_be32(5),
	CAP_VERSION_1_1 = cpu_to_be32(0x06),
	CAP_VERSION_1_2 = cpu_to_be32(0x1A)
};

enum tpm_sub_capabilities {
	TPM_CAP_PROP_PCR = cpu_to_be32(0x101),
	TPM_CAP_PROP_MANUFACTURER = cpu_to_be32(0x103),
	TPM_CAP_FLAG_PERM = cpu_to_be32(0x108),
	TPM_CAP_FLAG_VOL = cpu_to_be32(0x109),
	TPM_CAP_PROP_OWNER = cpu_to_be32(0x111),
	TPM_CAP_PROP_TIS_TIMEOUT = cpu_to_be32(0x115),
	TPM_CAP_PROP_TIS_DURATION = cpu_to_be32(0x120),

};

struct	tpm_getcap_params_in {
	__be32	cap;
	__be32	subcap_size;
	__be32	subcap;
} __packed;

struct	tpm_getcap_params_out {
	__be32	cap_size;
	cap_t	cap;
} __packed;

struct	tpm_readpubek_params_out {
	u8	algorithm[4];
	u8	encscheme[2];
	u8	sigscheme[2];
	__be32	paramsize;
	u8	parameters[12]; /*assuming RSA*/
	__be32	keysize;
	u8	modulus[256];
	u8	checksum[20];
} __packed;

typedef union {
	struct	tpm_input_header in;
	struct	tpm_output_header out;
} tpm_cmd_header;

struct tpm_pcrread_out {
	u8	pcr_result[TPM_DIGEST_SIZE];
} __packed;

struct tpm_pcrread_in {
	__be32	pcr_idx;
} __packed;

struct tpm_pcrextend_in {
	__be32	pcr_idx;
	u8	hash[TPM_DIGEST_SIZE];
} __packed;

/* 128 bytes is an arbitrary cap. This could be as large as TPM_BUFSIZE - 18
 * bytes, but 128 is still a relatively large number of random bytes and
 * anything much bigger causes users of struct tpm_cmd_t to start getting
 * compiler warnings about stack frame size. */
#define TPM_MAX_RNG_DATA	128

struct tpm_getrandom_out {
	__be32 rng_data_len;
	u8     rng_data[TPM_MAX_RNG_DATA];
} __packed;

struct tpm_getrandom_in {
	__be32 num_bytes;
} __packed;

struct tpm_startup_in {
	__be16	startup_type;
} __packed;

typedef union {
	struct	tpm_getcap_params_out getcap_out;
	struct	tpm_readpubek_params_out readpubek_out;
	u8	readpubek_out_buffer[sizeof(struct tpm_readpubek_params_out)];
	struct	tpm_getcap_params_in getcap_in;
	struct	tpm_pcrread_in	pcrread_in;
	struct	tpm_pcrread_out	pcrread_out;
	struct	tpm_pcrextend_in pcrextend_in;
	struct	tpm_getrandom_in getrandom_in;
	struct	tpm_getrandom_out getrandom_out;
	struct tpm_startup_in startup_in;
} tpm_cmd_params;

struct tpm_cmd_t {
	tpm_cmd_header	header;
	tpm_cmd_params	params;
} __packed;

extern struct class *tpm_class;
extern dev_t tpm_devt;
extern const struct file_operations tpm_fops;

ssize_t	tpm_getcap(struct device *, __be32, cap_t *, const char *);
ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
		     size_t bufsiz);
ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd, int len,
			 const char *desc);
extern int tpm_get_timeouts(struct tpm_chip *);
extern void tpm_gen_interrupt(struct tpm_chip *);
extern int tpm_do_selftest(struct tpm_chip *);
extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32);
extern int tpm_pm_suspend(struct device *);
extern int tpm_pm_resume(struct device *);
extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long,
			     wait_queue_head_t *, bool);

struct tpm_chip *tpm_chip_find_get(int chip_num);
extern struct tpm_chip *tpmm_chip_alloc(struct device *dev,
				       const struct tpm_class_ops *ops);
extern int tpm_chip_register(struct tpm_chip *chip);
extern void tpm_chip_unregister(struct tpm_chip *chip);

int tpm_sysfs_add_device(struct tpm_chip *chip);
void tpm_sysfs_del_device(struct tpm_chip *chip);

int tpm_pcr_read_dev(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);

#ifdef CONFIG_ACPI
extern int tpm_add_ppi(struct tpm_chip *chip);
extern void tpm_remove_ppi(struct tpm_chip *chip);
#else
static inline int tpm_add_ppi(struct tpm_chip *chip)
{
	return 0;
}

static inline void tpm_remove_ppi(struct tpm_chip *chip)
{
}
#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (C) 2004 IBM Corporation
	3	*
	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	*
8e81cc13	10	* Maintained by: <tpmdd-devel@lists.sourceforge.net>
1da177e4 LT	11	*
	12	* Device driver for TCG/TCPA TPM (trusted platform module).
	13	* Specifications at www.trustedcomputinggroup.org
	14	*
	15	* This program is free software; you can redistribute it and/or
	16	* modify it under the terms of the GNU General Public License as
	17	* published by the Free Software Foundation, version 2 of the
	18	* License.
	19	*
	20	*/
	21	#include <linux/module.h>
1da177e4 LT	22	#include <linux/delay.h>
1da177e4 LT	23	#include <linux/fs.h>
d081d470	24	#include <linux/mutex.h>
914e2637	25	#include <linux/sched.h>
bbc5b212	26	#include <linux/platform_device.h>
276ad0c1	27	#include <linux/io.h>
659aaf2b	28	#include <linux/tpm.h>
0dc55365	29	#include <linux/acpi.h>
313d21ee	30	#include <linux/cdev.h>
1da177e4	31
41ab999c KY	32	enum tpm_const {
	33	TPM_MINOR = 224, /* officially assigned */
	34	TPM_BUFSIZE = 4096,
	35	TPM_NUM_DEVICES = 256,
32d33b29	36	TPM_RETRY = 50, /* 5 seconds */
41ab999c KY	37	};
41ab999c KY	38
3122a88a KH	39	enum tpm_timeout {
3122a88a KH	40	TPM_TIMEOUT = 5, /* msecs */
32d33b29	41	TPM_TIMEOUT_RETRY = 100 /* msecs */
3122a88a	42	};
1da177e4 LT	43
1da177e4 LT	44	/* TPM addresses */
3122a88a	45	enum tpm_addr {
daacdfa6	46	TPM_SUPERIO_ADDR = 0x2E,
3122a88a	47	TPM_ADDR = 0x4E,
3122a88a KH	48	};
3122a88a KH	49
000a07b0 JG	50	/* Indexes the duration array */
	51	enum tpm_duration {
	52	TPM_SHORT = 0,
	53	TPM_MEDIUM = 1,
	54	TPM_LONG = 2,
	55	TPM_UNDEFINED,
	56	};
	57
32d33b29	58	#define TPM_WARN_RETRY 0x800
68d6e671	59	#define TPM_WARN_DOING_SELFTEST 0x802
be405411 SB	60	#define TPM_ERR_DEACTIVATED 0x6
be405411 SB	61	#define TPM_ERR_DISABLED 0x7
c584af19	62	#define TPM_ERR_INVALID_POSTINIT 38
be405411	63
b9e3238a	64	#define TPM_HEADER_SIZE 10
1da177e4 LT	65	struct tpm_chip;
	66
	67	struct tpm_vendor_specific {
ad5ea3cc KJH	68	void __iomem iobase; / ioremapped address */
	69	unsigned long base; /* TPM base address */
	70
27084efe	71	int irq;
a7b66822	72	int probed_irq;
27084efe	73
ad5ea3cc KJH	74	int region_size;
ad5ea3cc KJH	75	int have_region;
1da177e4	76
27084efe LD	77	struct list_head list;
27084efe LD	78	int locality;
36b20020	79	unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */
62592101	80	bool timeout_adjusted;
36b20020	81	unsigned long duration[3]; /* jiffies */
04ab2293	82	bool duration_adjusted;
775585e4	83	void *priv;
27084efe LD	84
	85	wait_queue_head_t read_queue;
	86	wait_queue_head_t int_queue;
3e3a5e90 SB	87
3e3a5e90 SB	88	u16 manufacturer_id;
1da177e4 LT	89	};
1da177e4 LT	90
775585e4 KY	91	#define TPM_VPRIV(c) (c)->vendor.priv
775585e4 KY	92
4e401fb0	93	#define TPM_VID_INTEL 0x8086
1f866057 SB	94	#define TPM_VID_WINBOND 0x1050
1f866057 SB	95	#define TPM_VID_STM 0x104A
4e401fb0	96
0dc55365 JS	97	#define TPM_PPI_VERSION_LEN 3
0dc55365 JS	98
afb5abc2 JS	99	enum tpm_chip_flags {
afb5abc2 JS	100	TPM_CHIP_FLAG_REGISTERED = BIT(0),
0dc55365	101	TPM_CHIP_FLAG_PPI = BIT(1),
afb5abc2 JS	102	};
afb5abc2 JS	103
1da177e4	104	struct tpm_chip {
71ed848f	105	struct device pdev; / Device stuff */
313d21ee JS	106	struct device dev;
	107	struct cdev cdev;
	108
5f82e9f0	109	const struct tpm_class_ops *ops;
afb5abc2	110	unsigned int flags;
1da177e4 LT	111
1da177e4 LT	112	int dev_num; /* /dev/tpm# */
6aff1fdc	113	char devname[7];
dc36d32c	114	unsigned long is_open; /* only one allowed */
1da177e4 LT	115	int time_expired;
1da177e4 LT	116
d081d470	117	struct mutex tpm_mutex; /* tpm is processing */
1da177e4	118
90dda520	119	struct tpm_vendor_specific vendor;
1da177e4	120
55a82ab3 KJH	121	struct dentry **bios_dir;
55a82ab3 KJH	122
0dc55365 JS	123	#ifdef CONFIG_ACPI
	124	acpi_handle acpi_dev_handle;
	125	char ppi_version[TPM_PPI_VERSION_LEN + 1];
	126	#endif /* CONFIG_ACPI */
	127
1da177e4 LT	128	struct list_head list;
	129	};
	130
27084efe LD	131	#define to_tpm_chip(n) container_of(n, struct tpm_chip, vendor)
27084efe LD	132
a0e39349 MZ	133	static inline void tpm_chip_put(struct tpm_chip *chip)
a0e39349 MZ	134	{
71ed848f	135	module_put(chip->pdev->driver->owner);
a0e39349 MZ	136	}
a0e39349 MZ	137
daacdfa6	138	static inline int tpm_read_index(int base, int index)
1da177e4	139	{
daacdfa6 KJH	140	outb(index, base);
daacdfa6 KJH	141	return inb(base+1) & 0xFF;
1da177e4 LT	142	}
1da177e4 LT	143
daacdfa6	144	static inline void tpm_write_index(int base, int index, int value)
1da177e4	145	{
daacdfa6 KJH	146	outb(index, base);
daacdfa6 KJH	147	outb(value & 0xFF, base+1);
1da177e4	148	}
08837438 RA	149	struct tpm_input_header {
	150	__be16 tag;
	151	__be32 length;
	152	__be32 ordinal;
348df8db	153	} __packed;
08837438 RA	154
	155	struct tpm_output_header {
	156	__be16 tag;
	157	__be32 length;
	158	__be32 return_code;
348df8db	159	} __packed;
08837438	160
000a07b0 JG	161	#define TPM_TAG_RQU_COMMAND cpu_to_be16(193)
000a07b0 JG	162
08837438 RA	163	struct stclear_flags_t {
	164	__be16 tag;
	165	u8 deactivated;
	166	u8 disableForceClear;
	167	u8 physicalPresence;
	168	u8 physicalPresenceLock;
	169	u8 bGlobalLock;
348df8db	170	} __packed;
08837438 RA	171
	172	struct tpm_version_t {
	173	u8 Major;
	174	u8 Minor;
	175	u8 revMajor;
	176	u8 revMinor;
348df8db	177	} __packed;
08837438 RA	178
	179	struct tpm_version_1_2_t {
	180	__be16 tag;
	181	u8 Major;
	182	u8 Minor;
	183	u8 revMajor;
	184	u8 revMinor;
348df8db	185	} __packed;
08837438 RA	186
	187	struct timeout_t {
	188	__be32 a;
	189	__be32 b;
	190	__be32 c;
	191	__be32 d;
348df8db	192	} __packed;
08837438 RA	193
	194	struct duration_t {
	195	__be32 tpm_short;
	196	__be32 tpm_medium;
	197	__be32 tpm_long;
348df8db	198	} __packed;
08837438 RA	199
	200	struct permanent_flags_t {
	201	__be16 tag;
	202	u8 disable;
	203	u8 ownership;
	204	u8 deactivated;
	205	u8 readPubek;
	206	u8 disableOwnerClear;
	207	u8 allowMaintenance;
	208	u8 physicalPresenceLifetimeLock;
	209	u8 physicalPresenceHWEnable;
	210	u8 physicalPresenceCMDEnable;
	211	u8 CEKPUsed;
	212	u8 TPMpost;
	213	u8 TPMpostLock;
	214	u8 FIPS;
	215	u8 operator;
	216	u8 enableRevokeEK;
	217	u8 nvLocked;
	218	u8 readSRKPub;
	219	u8 tpmEstablished;
	220	u8 maintenanceDone;
	221	u8 disableFullDALogicInfo;
348df8db	222	} __packed;
08837438 RA	223
	224	typedef union {
	225	struct permanent_flags_t perm_flags;
	226	struct stclear_flags_t stclear_flags;
	227	bool owned;
	228	__be32 num_pcrs;
	229	struct tpm_version_t tpm_version;
	230	struct tpm_version_1_2_t tpm_version_1_2;
	231	__be32 manufacturer_id;
	232	struct timeout_t timeout;
	233	struct duration_t duration;
	234	} cap_t;
	235
000a07b0 JG	236	enum tpm_capabilities {
	237	TPM_CAP_FLAG = cpu_to_be32(4),
	238	TPM_CAP_PROP = cpu_to_be32(5),
	239	CAP_VERSION_1_1 = cpu_to_be32(0x06),
	240	CAP_VERSION_1_2 = cpu_to_be32(0x1A)
	241	};
	242
	243	enum tpm_sub_capabilities {
	244	TPM_CAP_PROP_PCR = cpu_to_be32(0x101),
	245	TPM_CAP_PROP_MANUFACTURER = cpu_to_be32(0x103),
	246	TPM_CAP_FLAG_PERM = cpu_to_be32(0x108),
	247	TPM_CAP_FLAG_VOL = cpu_to_be32(0x109),
	248	TPM_CAP_PROP_OWNER = cpu_to_be32(0x111),
	249	TPM_CAP_PROP_TIS_TIMEOUT = cpu_to_be32(0x115),
	250	TPM_CAP_PROP_TIS_DURATION = cpu_to_be32(0x120),
	251
	252	};
	253
08837438 RA	254	struct tpm_getcap_params_in {
	255	__be32 cap;
	256	__be32 subcap_size;
	257	__be32 subcap;
348df8db	258	} __packed;
08837438 RA	259
	260	struct tpm_getcap_params_out {
	261	__be32 cap_size;
	262	cap_t cap;
348df8db	263	} __packed;
08837438 RA	264
	265	struct tpm_readpubek_params_out {
	266	u8 algorithm[4];
	267	u8 encscheme[2];
	268	u8 sigscheme[2];
02a077c5	269	__be32 paramsize;
08837438 RA	270	u8 parameters[12]; /assuming RSA/
	271	__be32 keysize;
	272	u8 modulus[256];
	273	u8 checksum[20];
348df8db	274	} __packed;
08837438 RA	275
	276	typedef union {
	277	struct tpm_input_header in;
	278	struct tpm_output_header out;
	279	} tpm_cmd_header;
	280
659aaf2b RA	281	struct tpm_pcrread_out {
659aaf2b RA	282	u8 pcr_result[TPM_DIGEST_SIZE];
348df8db	283	} __packed;
659aaf2b RA	284
	285	struct tpm_pcrread_in {
	286	__be32 pcr_idx;
348df8db	287	} __packed;
659aaf2b RA	288
	289	struct tpm_pcrextend_in {
	290	__be32 pcr_idx;
	291	u8 hash[TPM_DIGEST_SIZE];
348df8db	292	} __packed;
659aaf2b	293
41ab999c KY	294	/* 128 bytes is an arbitrary cap. This could be as large as TPM_BUFSIZE - 18
	295	* bytes, but 128 is still a relatively large number of random bytes and
	296	* anything much bigger causes users of struct tpm_cmd_t to start getting
	297	* compiler warnings about stack frame size. */
	298	#define TPM_MAX_RNG_DATA 128
	299
	300	struct tpm_getrandom_out {
	301	__be32 rng_data_len;
	302	u8 rng_data[TPM_MAX_RNG_DATA];
348df8db	303	} __packed;
41ab999c KY	304
	305	struct tpm_getrandom_in {
	306	__be32 num_bytes;
348df8db	307	} __packed;
41ab999c	308
c584af19 JG	309	struct tpm_startup_in {
	310	__be16 startup_type;
	311	} __packed;
	312
08837438 RA	313	typedef union {
	314	struct tpm_getcap_params_out getcap_out;
	315	struct tpm_readpubek_params_out readpubek_out;
	316	u8 readpubek_out_buffer[sizeof(struct tpm_readpubek_params_out)];
	317	struct tpm_getcap_params_in getcap_in;
659aaf2b RA	318	struct tpm_pcrread_in pcrread_in;
	319	struct tpm_pcrread_out pcrread_out;
	320	struct tpm_pcrextend_in pcrextend_in;
41ab999c KY	321	struct tpm_getrandom_in getrandom_in;
41ab999c KY	322	struct tpm_getrandom_out getrandom_out;
c584af19	323	struct tpm_startup_in startup_in;
08837438 RA	324	} tpm_cmd_params;
	325
	326	struct tpm_cmd_t {
	327	tpm_cmd_header header;
	328	tpm_cmd_params params;
348df8db	329	} __packed;
08837438	330
313d21ee JS	331	extern struct class *tpm_class;
	332	extern dev_t tpm_devt;
	333	extern const struct file_operations tpm_fops;
	334
08837438	335	ssize_t tpm_getcap(struct device , __be32, cap_t , const char *);
afdba32e JG	336	ssize_t tpm_transmit(struct tpm_chip chip, const char buf,
afdba32e JG	337	size_t bufsiz);
87155b73 JS	338	ssize_t tpm_transmit_cmd(struct tpm_chip chip, void cmd, int len,
87155b73 JS	339	const char *desc);
2b30a90f	340	extern int tpm_get_timeouts(struct tpm_chip *);
08e96e48	341	extern void tpm_gen_interrupt(struct tpm_chip *);
68d6e671	342	extern int tpm_do_selftest(struct tpm_chip *);
9e18ee19	343	extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32);
035e2ce8	344	extern int tpm_pm_suspend(struct device *);
ce2c87d4	345	extern int tpm_pm_resume(struct device *);
fd048866	346	extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long,
78f09cc2	347	wait_queue_head_t *, bool);
f84fdff0	348
afb5abc2 JS	349	struct tpm_chip *tpm_chip_find_get(int chip_num);
	350	extern struct tpm_chip tpmm_chip_alloc(struct device dev,
	351	const struct tpm_class_ops *ops);
	352	extern int tpm_chip_register(struct tpm_chip *chip);
	353	extern void tpm_chip_unregister(struct tpm_chip *chip);
	354
1e3b73a9 JG	355	int tpm_sysfs_add_device(struct tpm_chip *chip);
1e3b73a9 JG	356	void tpm_sysfs_del_device(struct tpm_chip *chip);
afdba32e	357
000a07b0 JG	358	int tpm_pcr_read_dev(struct tpm_chip chip, int pcr_idx, u8 res_buf);
000a07b0 JG	359
f84fdff0	360	#ifdef CONFIG_ACPI
0dc55365 JS	361	extern int tpm_add_ppi(struct tpm_chip *chip);
0dc55365 JS	362	extern void tpm_remove_ppi(struct tpm_chip *chip);
f84fdff0	363	#else
0dc55365	364	static inline int tpm_add_ppi(struct tpm_chip *chip)
f84fdff0 XZ	365	{
	366	return 0;
	367	}
1631cfb7	368
0dc55365	369	static inline void tpm_remove_ppi(struct tpm_chip *chip)
1631cfb7 GW	370	{
1631cfb7 GW	371	}
f84fdff0	372	#endif