[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

enum tpm2_const {
	TPM2_PLATFORM_PCR	= 24,
	TPM2_PCR_SELECT_MIN	= ((TPM2_PLATFORM_PCR + 7) / 8),
	TPM2_TIMEOUT_A		= 750,
	TPM2_TIMEOUT_B		= 2000,
	TPM2_TIMEOUT_C		= 200,
	TPM2_TIMEOUT_D		= 30,
	TPM2_DURATION_SHORT	= 20,
	TPM2_DURATION_MEDIUM	= 750,
	TPM2_DURATION_LONG	= 2000,
};

enum tpm2_structures {
	TPM2_ST_NO_SESSIONS	= 0x8001,
	TPM2_ST_SESSIONS	= 0x8002,
};

enum tpm2_return_codes {
	TPM2_RC_INITIALIZE	= 0x0100,
	TPM2_RC_TESTING		= 0x090A,
	TPM2_RC_DISABLED	= 0x0120,
};

enum tpm2_algorithms {
	TPM2_ALG_SHA1		= 0x0004,
};

enum tpm2_command_codes {
	TPM2_CC_FIRST		= 0x011F,
	TPM2_CC_SELF_TEST	= 0x0143,
	TPM2_CC_STARTUP		= 0x0144,
	TPM2_CC_SHUTDOWN	= 0x0145,
	TPM2_CC_GET_CAPABILITY	= 0x017A,
	TPM2_CC_GET_RANDOM	= 0x017B,
	TPM2_CC_PCR_READ	= 0x017E,
	TPM2_CC_PCR_EXTEND	= 0x0182,
	TPM2_CC_LAST		= 0x018F,
};

enum tpm2_permanent_handles {
	TPM2_RS_PW		= 0x40000009,
};

enum tpm2_capabilities {
	TPM2_CAP_TPM_PROPERTIES = 6,
};

enum tpm2_startup_types {
	TPM2_SU_CLEAR	= 0x0000,
	TPM2_SU_STATE	= 0x0001,
};

enum tpm2_start_method {
	TPM2_START_ACPI = 2,
	TPM2_START_FIFO = 6,
	TPM2_START_CRB = 7,
	TPM2_START_CRB_WITH_ACPI = 8,
};

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_TPM2		= 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
	const struct attribute_group *groups[2];
	unsigned int groups_cnt;
	acpi_handle acpi_dev_handle;
	char ppi_version[TPM_PPI_VERSION_LEN + 1];
#endif /* CONFIG_ACPI */

	struct list_head list;
};

#define to_tpm_chip(d) container_of(d, struct tpm_chip, dev)

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 void tpm_add_ppi(struct tpm_chip *chip);
#else
static inline void tpm_add_ppi(struct tpm_chip *chip)
{
}
#endif

int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);
int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash);
int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max);
ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
			u32 *value, const char *desc);

extern int tpm2_startup(struct tpm_chip *chip, u16 startup_type);
extern void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
extern unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *, u32);
extern int tpm2_do_selftest(struct tpm_chip *chip);
extern int tpm2_gen_interrupt(struct tpm_chip *chip);
extern int tpm2_probe(struct tpm_chip *chip);
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	*
1da177e4 LT	12	* Device driver for TCG/TCPA TPM (trusted platform module).
3b09825d	13	* Specifications at www.trustedcomputinggroup.org
1da177e4 LT	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.
3b09825d	19	*
1da177e4 LT	20	*/
1da177e4 LT	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
7a1d7e6d JS	65
	66	enum tpm2_const {
	67	TPM2_PLATFORM_PCR = 24,
	68	TPM2_PCR_SELECT_MIN = ((TPM2_PLATFORM_PCR + 7) / 8),
	69	TPM2_TIMEOUT_A = 750,
	70	TPM2_TIMEOUT_B = 2000,
	71	TPM2_TIMEOUT_C = 200,
	72	TPM2_TIMEOUT_D = 30,
	73	TPM2_DURATION_SHORT = 20,
	74	TPM2_DURATION_MEDIUM = 750,
	75	TPM2_DURATION_LONG = 2000,
	76	};
	77
	78	enum tpm2_structures {
	79	TPM2_ST_NO_SESSIONS = 0x8001,
	80	TPM2_ST_SESSIONS = 0x8002,
	81	};
	82
	83	enum tpm2_return_codes {
	84	TPM2_RC_INITIALIZE = 0x0100,
	85	TPM2_RC_TESTING = 0x090A,
	86	TPM2_RC_DISABLED = 0x0120,
	87	};
	88
	89	enum tpm2_algorithms {
	90	TPM2_ALG_SHA1 = 0x0004,
	91	};
	92
	93	enum tpm2_command_codes {
	94	TPM2_CC_FIRST = 0x011F,
	95	TPM2_CC_SELF_TEST = 0x0143,
	96	TPM2_CC_STARTUP = 0x0144,
	97	TPM2_CC_SHUTDOWN = 0x0145,
	98	TPM2_CC_GET_CAPABILITY = 0x017A,
	99	TPM2_CC_GET_RANDOM = 0x017B,
	100	TPM2_CC_PCR_READ = 0x017E,
	101	TPM2_CC_PCR_EXTEND = 0x0182,
	102	TPM2_CC_LAST = 0x018F,
	103	};
	104
	105	enum tpm2_permanent_handles {
	106	TPM2_RS_PW = 0x40000009,
	107	};
	108
	109	enum tpm2_capabilities {
	110	TPM2_CAP_TPM_PROPERTIES = 6,
	111	};
	112
	113	enum tpm2_startup_types {
	114	TPM2_SU_CLEAR = 0x0000,
	115	TPM2_SU_STATE = 0x0001,
	116	};
	117
399235dc JS	118	enum tpm2_start_method {
	119	TPM2_START_ACPI = 2,
	120	TPM2_START_FIFO = 6,
	121	TPM2_START_CRB = 7,
	122	TPM2_START_CRB_WITH_ACPI = 8,
	123	};
	124
1da177e4 LT	125	struct tpm_chip;
	126
	127	struct tpm_vendor_specific {
ad5ea3cc KJH	128	void __iomem iobase; / ioremapped address */
	129	unsigned long base; /* TPM base address */
	130
27084efe	131	int irq;
a7b66822	132	int probed_irq;
27084efe	133
ad5ea3cc KJH	134	int region_size;
ad5ea3cc KJH	135	int have_region;
1da177e4	136
27084efe LD	137	struct list_head list;
27084efe LD	138	int locality;
36b20020	139	unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* jiffies */
62592101	140	bool timeout_adjusted;
36b20020	141	unsigned long duration[3]; /* jiffies */
04ab2293	142	bool duration_adjusted;
775585e4	143	void *priv;
27084efe LD	144
	145	wait_queue_head_t read_queue;
	146	wait_queue_head_t int_queue;
3e3a5e90 SB	147
3e3a5e90 SB	148	u16 manufacturer_id;
1da177e4 LT	149	};
1da177e4 LT	150
3b09825d	151	#define TPM_VPRIV(c) ((c)->vendor.priv)
775585e4	152
4e401fb0	153	#define TPM_VID_INTEL 0x8086
1f866057 SB	154	#define TPM_VID_WINBOND 0x1050
1f866057 SB	155	#define TPM_VID_STM 0x104A
4e401fb0	156
0dc55365 JS	157	#define TPM_PPI_VERSION_LEN 3
0dc55365 JS	158
afb5abc2 JS	159	enum tpm_chip_flags {
afb5abc2 JS	160	TPM_CHIP_FLAG_REGISTERED = BIT(0),
9b774d5c	161	TPM_CHIP_FLAG_TPM2 = BIT(1),
afb5abc2 JS	162	};
afb5abc2 JS	163
1da177e4	164	struct tpm_chip {
71ed848f	165	struct device pdev; / Device stuff */
313d21ee JS	166	struct device dev;
	167	struct cdev cdev;
	168
5f82e9f0	169	const struct tpm_class_ops *ops;
afb5abc2	170	unsigned int flags;
1da177e4 LT	171
1da177e4 LT	172	int dev_num; /* /dev/tpm# */
6aff1fdc	173	char devname[7];
dc36d32c	174	unsigned long is_open; /* only one allowed */
1da177e4 LT	175	int time_expired;
1da177e4 LT	176
d081d470	177	struct mutex tpm_mutex; /* tpm is processing */
1da177e4	178
90dda520	179	struct tpm_vendor_specific vendor;
1da177e4	180
55a82ab3 KJH	181	struct dentry **bios_dir;
55a82ab3 KJH	182
0dc55365	183	#ifdef CONFIG_ACPI
9b774d5c JS	184	const struct attribute_group *groups[2];
9b774d5c JS	185	unsigned int groups_cnt;
0dc55365 JS	186	acpi_handle acpi_dev_handle;
	187	char ppi_version[TPM_PPI_VERSION_LEN + 1];
	188	#endif /* CONFIG_ACPI */
	189
1da177e4 LT	190	struct list_head list;
	191	};
	192
9b774d5c	193	#define to_tpm_chip(d) container_of(d, struct tpm_chip, dev)
27084efe	194
a0e39349 MZ	195	static inline void tpm_chip_put(struct tpm_chip *chip)
a0e39349 MZ	196	{
71ed848f	197	module_put(chip->pdev->driver->owner);
a0e39349 MZ	198	}
a0e39349 MZ	199
daacdfa6	200	static inline int tpm_read_index(int base, int index)
1da177e4	201	{
daacdfa6 KJH	202	outb(index, base);
daacdfa6 KJH	203	return inb(base+1) & 0xFF;
1da177e4 LT	204	}
1da177e4 LT	205
daacdfa6	206	static inline void tpm_write_index(int base, int index, int value)
1da177e4	207	{
daacdfa6 KJH	208	outb(index, base);
daacdfa6 KJH	209	outb(value & 0xFF, base+1);
1da177e4	210	}
08837438 RA	211	struct tpm_input_header {
	212	__be16 tag;
	213	__be32 length;
	214	__be32 ordinal;
348df8db	215	} __packed;
08837438 RA	216
	217	struct tpm_output_header {
	218	__be16 tag;
	219	__be32 length;
	220	__be32 return_code;
348df8db	221	} __packed;
08837438	222
000a07b0 JG	223	#define TPM_TAG_RQU_COMMAND cpu_to_be16(193)
000a07b0 JG	224
08837438 RA	225	struct stclear_flags_t {
	226	__be16 tag;
	227	u8 deactivated;
	228	u8 disableForceClear;
	229	u8 physicalPresence;
	230	u8 physicalPresenceLock;
	231	u8 bGlobalLock;
348df8db	232	} __packed;
08837438 RA	233
	234	struct tpm_version_t {
	235	u8 Major;
	236	u8 Minor;
	237	u8 revMajor;
	238	u8 revMinor;
348df8db	239	} __packed;
08837438 RA	240
	241	struct tpm_version_1_2_t {
	242	__be16 tag;
	243	u8 Major;
	244	u8 Minor;
	245	u8 revMajor;
	246	u8 revMinor;
348df8db	247	} __packed;
08837438 RA	248
	249	struct timeout_t {
	250	__be32 a;
	251	__be32 b;
	252	__be32 c;
	253	__be32 d;
348df8db	254	} __packed;
08837438 RA	255
	256	struct duration_t {
	257	__be32 tpm_short;
	258	__be32 tpm_medium;
	259	__be32 tpm_long;
348df8db	260	} __packed;
08837438 RA	261
	262	struct permanent_flags_t {
	263	__be16 tag;
	264	u8 disable;
	265	u8 ownership;
	266	u8 deactivated;
	267	u8 readPubek;
	268	u8 disableOwnerClear;
	269	u8 allowMaintenance;
	270	u8 physicalPresenceLifetimeLock;
	271	u8 physicalPresenceHWEnable;
	272	u8 physicalPresenceCMDEnable;
	273	u8 CEKPUsed;
	274	u8 TPMpost;
	275	u8 TPMpostLock;
	276	u8 FIPS;
	277	u8 operator;
	278	u8 enableRevokeEK;
	279	u8 nvLocked;
	280	u8 readSRKPub;
	281	u8 tpmEstablished;
	282	u8 maintenanceDone;
	283	u8 disableFullDALogicInfo;
348df8db	284	} __packed;
08837438 RA	285
	286	typedef union {
	287	struct permanent_flags_t perm_flags;
	288	struct stclear_flags_t stclear_flags;
	289	bool owned;
	290	__be32 num_pcrs;
	291	struct tpm_version_t tpm_version;
	292	struct tpm_version_1_2_t tpm_version_1_2;
	293	__be32 manufacturer_id;
	294	struct timeout_t timeout;
	295	struct duration_t duration;
	296	} cap_t;
	297
000a07b0 JG	298	enum tpm_capabilities {
	299	TPM_CAP_FLAG = cpu_to_be32(4),
	300	TPM_CAP_PROP = cpu_to_be32(5),
	301	CAP_VERSION_1_1 = cpu_to_be32(0x06),
	302	CAP_VERSION_1_2 = cpu_to_be32(0x1A)
	303	};
	304
	305	enum tpm_sub_capabilities {
	306	TPM_CAP_PROP_PCR = cpu_to_be32(0x101),
	307	TPM_CAP_PROP_MANUFACTURER = cpu_to_be32(0x103),
	308	TPM_CAP_FLAG_PERM = cpu_to_be32(0x108),
	309	TPM_CAP_FLAG_VOL = cpu_to_be32(0x109),
	310	TPM_CAP_PROP_OWNER = cpu_to_be32(0x111),
	311	TPM_CAP_PROP_TIS_TIMEOUT = cpu_to_be32(0x115),
	312	TPM_CAP_PROP_TIS_DURATION = cpu_to_be32(0x120),
	313
	314	};
	315
08837438 RA	316	struct tpm_getcap_params_in {
	317	__be32 cap;
	318	__be32 subcap_size;
	319	__be32 subcap;
348df8db	320	} __packed;
08837438 RA	321
	322	struct tpm_getcap_params_out {
	323	__be32 cap_size;
	324	cap_t cap;
348df8db	325	} __packed;
08837438 RA	326
	327	struct tpm_readpubek_params_out {
	328	u8 algorithm[4];
	329	u8 encscheme[2];
	330	u8 sigscheme[2];
02a077c5	331	__be32 paramsize;
08837438 RA	332	u8 parameters[12]; /assuming RSA/
	333	__be32 keysize;
	334	u8 modulus[256];
	335	u8 checksum[20];
348df8db	336	} __packed;
08837438 RA	337
	338	typedef union {
	339	struct tpm_input_header in;
	340	struct tpm_output_header out;
	341	} tpm_cmd_header;
	342
659aaf2b RA	343	struct tpm_pcrread_out {
659aaf2b RA	344	u8 pcr_result[TPM_DIGEST_SIZE];
348df8db	345	} __packed;
659aaf2b RA	346
	347	struct tpm_pcrread_in {
	348	__be32 pcr_idx;
348df8db	349	} __packed;
659aaf2b RA	350
	351	struct tpm_pcrextend_in {
	352	__be32 pcr_idx;
	353	u8 hash[TPM_DIGEST_SIZE];
348df8db	354	} __packed;
659aaf2b	355
41ab999c KY	356	/* 128 bytes is an arbitrary cap. This could be as large as TPM_BUFSIZE - 18
	357	* bytes, but 128 is still a relatively large number of random bytes and
	358	* anything much bigger causes users of struct tpm_cmd_t to start getting
	359	* compiler warnings about stack frame size. */
	360	#define TPM_MAX_RNG_DATA 128
	361
	362	struct tpm_getrandom_out {
	363	__be32 rng_data_len;
	364	u8 rng_data[TPM_MAX_RNG_DATA];
348df8db	365	} __packed;
41ab999c KY	366
	367	struct tpm_getrandom_in {
	368	__be32 num_bytes;
348df8db	369	} __packed;
41ab999c	370
c584af19 JG	371	struct tpm_startup_in {
	372	__be16 startup_type;
	373	} __packed;
	374
08837438 RA	375	typedef union {
	376	struct tpm_getcap_params_out getcap_out;
	377	struct tpm_readpubek_params_out readpubek_out;
	378	u8 readpubek_out_buffer[sizeof(struct tpm_readpubek_params_out)];
	379	struct tpm_getcap_params_in getcap_in;
659aaf2b RA	380	struct tpm_pcrread_in pcrread_in;
	381	struct tpm_pcrread_out pcrread_out;
	382	struct tpm_pcrextend_in pcrextend_in;
41ab999c KY	383	struct tpm_getrandom_in getrandom_in;
41ab999c KY	384	struct tpm_getrandom_out getrandom_out;
c584af19	385	struct tpm_startup_in startup_in;
08837438 RA	386	} tpm_cmd_params;
	387
	388	struct tpm_cmd_t {
	389	tpm_cmd_header header;
	390	tpm_cmd_params params;
348df8db	391	} __packed;
08837438	392
313d21ee JS	393	extern struct class *tpm_class;
	394	extern dev_t tpm_devt;
	395	extern const struct file_operations tpm_fops;
	396
08837438	397	ssize_t tpm_getcap(struct device , __be32, cap_t , const char *);
afdba32e JG	398	ssize_t tpm_transmit(struct tpm_chip chip, const char buf,
afdba32e JG	399	size_t bufsiz);
87155b73 JS	400	ssize_t tpm_transmit_cmd(struct tpm_chip chip, void cmd, int len,
87155b73 JS	401	const char *desc);
2b30a90f	402	extern int tpm_get_timeouts(struct tpm_chip *);
08e96e48	403	extern void tpm_gen_interrupt(struct tpm_chip *);
68d6e671	404	extern int tpm_do_selftest(struct tpm_chip *);
9e18ee19	405	extern unsigned long tpm_calc_ordinal_duration(struct tpm_chip *, u32);
035e2ce8	406	extern int tpm_pm_suspend(struct device *);
ce2c87d4	407	extern int tpm_pm_resume(struct device *);
fd048866	408	extern int wait_for_tpm_stat(struct tpm_chip *, u8, unsigned long,
78f09cc2	409	wait_queue_head_t *, bool);
f84fdff0	410
afb5abc2 JS	411	struct tpm_chip *tpm_chip_find_get(int chip_num);
	412	extern struct tpm_chip tpmm_chip_alloc(struct device dev,
	413	const struct tpm_class_ops *ops);
	414	extern int tpm_chip_register(struct tpm_chip *chip);
	415	extern void tpm_chip_unregister(struct tpm_chip *chip);
	416
1e3b73a9 JG	417	int tpm_sysfs_add_device(struct tpm_chip *chip);
1e3b73a9 JG	418	void tpm_sysfs_del_device(struct tpm_chip *chip);
afdba32e	419
000a07b0 JG	420	int tpm_pcr_read_dev(struct tpm_chip chip, int pcr_idx, u8 res_buf);
000a07b0 JG	421
f84fdff0	422	#ifdef CONFIG_ACPI
9b774d5c	423	extern void tpm_add_ppi(struct tpm_chip *chip);
f84fdff0	424	#else
9b774d5c	425	static inline void tpm_add_ppi(struct tpm_chip *chip)
1631cfb7 GW	426	{
1631cfb7 GW	427	}
f84fdff0	428	#endif
7a1d7e6d JS	429
	430	int tpm2_pcr_read(struct tpm_chip chip, int pcr_idx, u8 res_buf);
	431	int tpm2_pcr_extend(struct tpm_chip chip, int pcr_idx, const u8 hash);
	432	int tpm2_get_random(struct tpm_chip chip, u8 out, size_t max);
	433	ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
	434	u32 value, const char desc);
	435
	436	extern int tpm2_startup(struct tpm_chip *chip, u16 startup_type);
74d6b3ce	437	extern void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
7a1d7e6d JS	438	extern unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *, u32);
7a1d7e6d JS	439	extern int tpm2_do_selftest(struct tpm_chip *chip);
4d5f2051 JS	440	extern int tpm2_gen_interrupt(struct tpm_chip *chip);
4d5f2051 JS	441	extern int tpm2_probe(struct tpm_chip *chip);