[mirror_ubuntu-jammy-kernel.git] / drivers / char / tpm / tpm.h

/*
 * Copyright (C) 2004 IBM Corporation
 * Copyright (C) 2015 Intel 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.
 *
 */

#ifndef __TPM_H__
#define __TPM_H__

#include <linux/module.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/hw_random.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>
#include <linux/highmem.h>
#include <linux/tpm_eventlog.h>
#include <crypto/hash_info.h>

#ifdef CONFIG_X86
#include <asm/intel-family.h>
#endif

enum tpm_const {
	TPM_MINOR = 224,	/* officially assigned */
	TPM_BUFSIZE = 4096,
	TPM_NUM_DEVICES = 65536,
	TPM_RETRY = 50,		/* 5 seconds */
	TPM_NUM_EVENT_LOG_FILES = 3,
};

enum tpm_timeout {
	TPM_TIMEOUT = 5,	/* msecs */
	TPM_TIMEOUT_RETRY = 100, /* msecs */
	TPM_TIMEOUT_RANGE_US = 300,	/* usecs */
	TPM_TIMEOUT_POLL = 1,	/* msecs */
	TPM_TIMEOUT_USECS_MIN = 100,      /* usecs */
	TPM_TIMEOUT_USECS_MAX = 500      /* usecs */
};

/* 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_LONG_LONG = 3,
	TPM_UNDEFINED,
	TPM_NUM_DURATIONS = 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),
};

enum tpm2_timeouts {
	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,
	TPM2_DURATION_LONG_LONG = 300000,
	TPM2_DURATION_DEFAULT   = 120000,
};

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

/* Indicates from what layer of the software stack the error comes from */
#define TSS2_RC_LAYER_SHIFT	 16
#define TSS2_RESMGR_TPM_RC_LAYER (11 << TSS2_RC_LAYER_SHIFT)

enum tpm2_return_codes {
	TPM2_RC_SUCCESS		= 0x0000,
	TPM2_RC_HASH		= 0x0083, /* RC_FMT1 */
	TPM2_RC_HANDLE		= 0x008B,
	TPM2_RC_INITIALIZE	= 0x0100, /* RC_VER1 */
	TPM2_RC_FAILURE		= 0x0101,
	TPM2_RC_DISABLED	= 0x0120,
	TPM2_RC_COMMAND_CODE    = 0x0143,
	TPM2_RC_TESTING		= 0x090A, /* RC_WARN */
	TPM2_RC_REFERENCE_H0	= 0x0910,
	TPM2_RC_RETRY		= 0x0922,
};

enum tpm2_algorithms {
	TPM2_ALG_ERROR		= 0x0000,
	TPM2_ALG_SHA1		= 0x0004,
	TPM2_ALG_KEYEDHASH	= 0x0008,
	TPM2_ALG_SHA256		= 0x000B,
	TPM2_ALG_SHA384		= 0x000C,
	TPM2_ALG_SHA512		= 0x000D,
	TPM2_ALG_NULL		= 0x0010,
	TPM2_ALG_SM3_256	= 0x0012,
};

enum tpm2_command_codes {
	TPM2_CC_FIRST		        = 0x011F,
	TPM2_CC_HIERARCHY_CONTROL       = 0x0121,
	TPM2_CC_HIERARCHY_CHANGE_AUTH   = 0x0129,
	TPM2_CC_CREATE_PRIMARY          = 0x0131,
	TPM2_CC_SEQUENCE_COMPLETE       = 0x013E,
	TPM2_CC_SELF_TEST	        = 0x0143,
	TPM2_CC_STARTUP		        = 0x0144,
	TPM2_CC_SHUTDOWN	        = 0x0145,
	TPM2_CC_NV_READ                 = 0x014E,
	TPM2_CC_CREATE		        = 0x0153,
	TPM2_CC_LOAD		        = 0x0157,
	TPM2_CC_SEQUENCE_UPDATE         = 0x015C,
	TPM2_CC_UNSEAL		        = 0x015E,
	TPM2_CC_CONTEXT_LOAD	        = 0x0161,
	TPM2_CC_CONTEXT_SAVE	        = 0x0162,
	TPM2_CC_FLUSH_CONTEXT	        = 0x0165,
	TPM2_CC_VERIFY_SIGNATURE        = 0x0177,
	TPM2_CC_GET_CAPABILITY	        = 0x017A,
	TPM2_CC_GET_RANDOM	        = 0x017B,
	TPM2_CC_PCR_READ	        = 0x017E,
	TPM2_CC_PCR_EXTEND	        = 0x0182,
	TPM2_CC_EVENT_SEQUENCE_COMPLETE = 0x0185,
	TPM2_CC_HASH_SEQUENCE_START     = 0x0186,
	TPM2_CC_CREATE_LOADED           = 0x0191,
	TPM2_CC_LAST		        = 0x0193, /* Spec 1.36 */
};

enum tpm2_permanent_handles {
	TPM2_RS_PW		= 0x40000009,
};

enum tpm2_capabilities {
	TPM2_CAP_HANDLES	= 1,
	TPM2_CAP_COMMANDS	= 2,
	TPM2_CAP_PCRS		= 5,
	TPM2_CAP_TPM_PROPERTIES = 6,
};

enum tpm2_properties {
	TPM_PT_TOTAL_COMMANDS	= 0x0129,
};

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

enum tpm2_cc_attrs {
	TPM2_CC_ATTR_CHANDLES	= 25,
	TPM2_CC_ATTR_RHANDLE	= 28,
};

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

#define TPM_PPI_VERSION_LEN		3

struct tpm_space {
	u32 context_tbl[3];
	u8 *context_buf;
	u32 session_tbl[3];
	u8 *session_buf;
};

enum tpm_chip_flags {
	TPM_CHIP_FLAG_TPM2		= BIT(1),
	TPM_CHIP_FLAG_IRQ		= BIT(2),
	TPM_CHIP_FLAG_VIRTUAL		= BIT(3),
	TPM_CHIP_FLAG_HAVE_TIMEOUTS	= BIT(4),
	TPM_CHIP_FLAG_ALWAYS_POWERED	= BIT(5),
};

struct tpm_bios_log {
	void *bios_event_log;
	void *bios_event_log_end;
};

struct tpm_chip_seqops {
	struct tpm_chip *chip;
	const struct seq_operations *seqops;
};

struct tpm_chip {
	struct device dev;
	struct device devs;
	struct cdev cdev;
	struct cdev cdevs;

	/* A driver callback under ops cannot be run unless ops_sem is held
	 * (sometimes implicitly, eg for the sysfs code). ops becomes null
	 * when the driver is unregistered, see tpm_try_get_ops.
	 */
	struct rw_semaphore ops_sem;
	const struct tpm_class_ops *ops;

	struct tpm_bios_log log;
	struct tpm_chip_seqops bin_log_seqops;
	struct tpm_chip_seqops ascii_log_seqops;

	unsigned int flags;

	int dev_num;		/* /dev/tpm# */
	unsigned long is_open;	/* only one allowed */

	char hwrng_name[64];
	struct hwrng hwrng;

	struct mutex tpm_mutex;	/* tpm is processing */

	unsigned long timeout_a; /* jiffies */
	unsigned long timeout_b; /* jiffies */
	unsigned long timeout_c; /* jiffies */
	unsigned long timeout_d; /* jiffies */
	bool timeout_adjusted;
	unsigned long duration[TPM_NUM_DURATIONS]; /* jiffies */
	bool duration_adjusted;

	struct dentry *bios_dir[TPM_NUM_EVENT_LOG_FILES];

	const struct attribute_group *groups[3];
	unsigned int groups_cnt;

	u16 active_banks[7];
#ifdef CONFIG_ACPI
	acpi_handle acpi_dev_handle;
	char ppi_version[TPM_PPI_VERSION_LEN + 1];
#endif /* CONFIG_ACPI */

	struct tpm_space work_space;
	u32 nr_commands;
	u32 *cc_attrs_tbl;

	/* active locality */
	int locality;
};

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

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 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;
	__u8	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 = 4,
	TPM_CAP_PROP = 5,
	TPM_CAP_VERSION_1_1 = 0x06,
	TPM_CAP_VERSION_1_2 = 0x1A,
};

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

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;

/* 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;

typedef union {
	struct	tpm_pcrread_in	pcrread_in;
	struct	tpm_pcrread_out	pcrread_out;
	struct	tpm_getrandom_in getrandom_in;
	struct	tpm_getrandom_out getrandom_out;
} tpm_cmd_params;

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


/* A string buffer type for constructing TPM commands. This is based on the
 * ideas of string buffer code in security/keys/trusted.h but is heap based
 * in order to keep the stack usage minimal.
 */

enum tpm_buf_flags {
	TPM_BUF_OVERFLOW	= BIT(0),
};

struct tpm_buf {
	struct page *data_page;
	unsigned int flags;
	u8 *data;
};

static inline void tpm_buf_reset(struct tpm_buf *buf, u16 tag, u32 ordinal)
{
	struct tpm_input_header *head;
	head = (struct tpm_input_header *)buf->data;
	head->tag = cpu_to_be16(tag);
	head->length = cpu_to_be32(sizeof(*head));
	head->ordinal = cpu_to_be32(ordinal);
}

static inline int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal)
{
	buf->data_page = alloc_page(GFP_HIGHUSER);
	if (!buf->data_page)
		return -ENOMEM;

	buf->flags = 0;
	buf->data = kmap(buf->data_page);
	tpm_buf_reset(buf, tag, ordinal);
	return 0;
}

static inline void tpm_buf_destroy(struct tpm_buf *buf)
{
	kunmap(buf->data_page);
	__free_page(buf->data_page);
}

static inline u32 tpm_buf_length(struct tpm_buf *buf)
{
	struct tpm_input_header *head = (struct tpm_input_header *) buf->data;

	return be32_to_cpu(head->length);
}

static inline u16 tpm_buf_tag(struct tpm_buf *buf)
{
	struct tpm_input_header *head = (struct tpm_input_header *) buf->data;

	return be16_to_cpu(head->tag);
}

static inline void tpm_buf_append(struct tpm_buf *buf,
				  const unsigned char *new_data,
				  unsigned int new_len)
{
	struct tpm_input_header *head = (struct tpm_input_header *) buf->data;
	u32 len = tpm_buf_length(buf);

	/* Return silently if overflow has already happened. */
	if (buf->flags & TPM_BUF_OVERFLOW)
		return;

	if ((len + new_len) > PAGE_SIZE) {
		WARN(1, "tpm_buf: overflow\n");
		buf->flags |= TPM_BUF_OVERFLOW;
		return;
	}

	memcpy(&buf->data[len], new_data, new_len);
	head->length = cpu_to_be32(len + new_len);
}

static inline void tpm_buf_append_u8(struct tpm_buf *buf, const u8 value)
{
	tpm_buf_append(buf, &value, 1);
}

static inline void tpm_buf_append_u16(struct tpm_buf *buf, const u16 value)
{
	__be16 value2 = cpu_to_be16(value);

	tpm_buf_append(buf, (u8 *) &value2, 2);
}

static inline void tpm_buf_append_u32(struct tpm_buf *buf, const u32 value)
{
	__be32 value2 = cpu_to_be32(value);

	tpm_buf_append(buf, (u8 *) &value2, 4);
}

extern struct class *tpm_class;
extern struct class *tpmrm_class;
extern dev_t tpm_devt;
extern const struct file_operations tpm_fops;
extern const struct file_operations tpmrm_fops;
extern struct idr dev_nums_idr;

/**
 * enum tpm_transmit_flags - flags for tpm_transmit()
 *
 * @TPM_TRANSMIT_UNLOCKED:	do not lock the chip
 * @TPM_TRANSMIT_NESTED:	discard setup steps (power management,
 *				locality) including locking (i.e. implicit
 *				UNLOCKED)
 */
enum tpm_transmit_flags {
	TPM_TRANSMIT_UNLOCKED	= BIT(0),
	TPM_TRANSMIT_NESTED      = BIT(1),
};

ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,
		     u8 *buf, size_t bufsiz, unsigned int flags);
ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space,
			 void *buf, size_t bufsiz,
			 size_t min_rsp_body_length, unsigned int flags,
			 const char *desc);
int tpm_startup(struct tpm_chip *chip);
int tpm_get_timeouts(struct tpm_chip *);
int tpm1_auto_startup(struct tpm_chip *chip);
int tpm_do_selftest(struct tpm_chip *chip);

int tpm1_get_timeouts(struct tpm_chip *chip);
unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm1_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash,
		    const char *log_msg);
ssize_t tpm1_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
		    const char *desc, size_t min_cap_length);
unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm_pm_suspend(struct device *dev);
int tpm_pm_resume(struct device *dev);

static inline void tpm_msleep(unsigned int delay_msec)
{
	usleep_range((delay_msec * 1000) - TPM_TIMEOUT_RANGE_US,
		     delay_msec * 1000);
};

struct tpm_chip *tpm_find_get_ops(struct tpm_chip *chip);
__must_check int tpm_try_get_ops(struct tpm_chip *chip);
void tpm_put_ops(struct tpm_chip *chip);

struct tpm_chip *tpm_chip_alloc(struct device *dev,
				const struct tpm_class_ops *ops);
struct tpm_chip *tpmm_chip_alloc(struct device *pdev,
				 const struct tpm_class_ops *ops);
int tpm_chip_register(struct tpm_chip *chip);
void tpm_chip_unregister(struct tpm_chip *chip);

void tpm_sysfs_add_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

static inline u32 tpm2_rc_value(u32 rc)
{
	return (rc & BIT(7)) ? rc & 0xff : rc;
}

int tpm2_get_timeouts(struct tpm_chip *chip);
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, u32 count,
		    struct tpm2_digest *digests);
int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max);
void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
			    unsigned int flags);
int tpm2_seal_trusted(struct tpm_chip *chip,
		      struct trusted_key_payload *payload,
		      struct trusted_key_options *options);
int tpm2_unseal_trusted(struct tpm_chip *chip,
			struct trusted_key_payload *payload,
			struct trusted_key_options *options);
ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
			u32 *value, const char *desc);

int tpm2_auto_startup(struct tpm_chip *chip);
void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm2_probe(struct tpm_chip *chip);
int tpm2_find_cc(struct tpm_chip *chip, u32 cc);
int tpm2_init_space(struct tpm_space *space);
void tpm2_del_space(struct tpm_chip *chip, struct tpm_space *space);
int tpm2_prepare_space(struct tpm_chip *chip, struct tpm_space *space, u32 cc,
		       u8 *cmd);
int tpm2_commit_space(struct tpm_chip *chip, struct tpm_space *space,
		      u32 cc, u8 *buf, size_t *bufsiz);

int tpm_bios_log_setup(struct tpm_chip *chip);
void tpm_bios_log_teardown(struct tpm_chip *chip);
int tpm_dev_common_init(void);
void tpm_dev_common_exit(void);
#endif
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	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	*
1da177e4 LT	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>
1da177e4 LT	28	#include <linux/fs.h>
6e592a06	29	#include <linux/hw_random.h>
d081d470	30	#include <linux/mutex.h>
914e2637	31	#include <linux/sched.h>
bbc5b212	32	#include <linux/platform_device.h>
276ad0c1	33	#include <linux/io.h>
659aaf2b	34	#include <linux/tpm.h>
0dc55365	35	#include <linux/acpi.h>
313d21ee	36	#include <linux/cdev.h>
a74f8b36	37	#include <linux/highmem.h>
fd3ec366	38	#include <linux/tpm_eventlog.h>
c1f92b4b	39	#include <crypto/hash_info.h>
1da177e4	40
5e572cab AS	41	#ifdef CONFIG_X86
	42	#include <asm/intel-family.h>
	43	#endif
	44
41ab999c KY	45	enum tpm_const {
	46	TPM_MINOR = 224, /* officially assigned */
	47	TPM_BUFSIZE = 4096,
15516788	48	TPM_NUM_DEVICES = 65536,
32d33b29	49	TPM_RETRY = 50, /* 5 seconds */
cd9b7631	50	TPM_NUM_EVENT_LOG_FILES = 3,
41ab999c KY	51	};
41ab999c KY	52
3122a88a KH	53	enum tpm_timeout {
3122a88a KH	54	TPM_TIMEOUT = 5, /* msecs */
9f3fc7bc	55	TPM_TIMEOUT_RETRY = 100, /* msecs */
59f5a6b0	56	TPM_TIMEOUT_RANGE_US = 300, /* usecs */
424eaf91 NJ	57	TPM_TIMEOUT_POLL = 1, /* msecs */
	58	TPM_TIMEOUT_USECS_MIN = 100, /* usecs */
	59	TPM_TIMEOUT_USECS_MAX = 500 /* usecs */
3122a88a	60	};
1da177e4 LT	61
1da177e4 LT	62	/* TPM addresses */
3122a88a	63	enum tpm_addr {
daacdfa6	64	TPM_SUPERIO_ADDR = 0x2E,
3122a88a	65	TPM_ADDR = 0x4E,
3122a88a KH	66	};
3122a88a KH	67
000a07b0 JG	68	/* Indexes the duration array */
	69	enum tpm_duration {
	70	TPM_SHORT = 0,
	71	TPM_MEDIUM = 1,
	72	TPM_LONG = 2,
076d3564	73	TPM_LONG_LONG = 3,
000a07b0	74	TPM_UNDEFINED,
076d3564	75	TPM_NUM_DURATIONS = TPM_UNDEFINED,
000a07b0 JG	76	};
000a07b0 JG	77
32d33b29	78	#define TPM_WARN_RETRY 0x800
68d6e671	79	#define TPM_WARN_DOING_SELFTEST 0x802
be405411 SB	80	#define TPM_ERR_DEACTIVATED 0x6
be405411 SB	81	#define TPM_ERR_DISABLED 0x7
c584af19	82	#define TPM_ERR_INVALID_POSTINIT 38
be405411	83
b9e3238a	84	#define TPM_HEADER_SIZE 10
7a1d7e6d JS	85
7a1d7e6d JS	86	enum tpm2_const {
076d3564 TW	87	TPM2_PLATFORM_PCR = 24,
	88	TPM2_PCR_SELECT_MIN = ((TPM2_PLATFORM_PCR + 7) / 8),
	89	};
	90
	91	enum tpm2_timeouts {
	92	TPM2_TIMEOUT_A = 750,
	93	TPM2_TIMEOUT_B = 2000,
	94	TPM2_TIMEOUT_C = 200,
	95	TPM2_TIMEOUT_D = 30,
	96	TPM2_DURATION_SHORT = 20,
	97	TPM2_DURATION_MEDIUM = 750,
	98	TPM2_DURATION_LONG = 2000,
	99	TPM2_DURATION_LONG_LONG = 300000,
	100	TPM2_DURATION_DEFAULT = 120000,
7a1d7e6d JS	101	};
	102
	103	enum tpm2_structures {
	104	TPM2_ST_NO_SESSIONS = 0x8001,
	105	TPM2_ST_SESSIONS = 0x8002,
	106	};
	107
095531f8 JMC	108	/* Indicates from what layer of the software stack the error comes from */
	109	#define TSS2_RC_LAYER_SHIFT 16
	110	#define TSS2_RESMGR_TPM_RC_LAYER (11 << TSS2_RC_LAYER_SHIFT)
	111
7a1d7e6d	112	enum tpm2_return_codes {
745b361e	113	TPM2_RC_SUCCESS = 0x0000,
5ca4c20c	114	TPM2_RC_HASH = 0x0083, /* RC_FMT1 */
745b361e	115	TPM2_RC_HANDLE = 0x008B,
5ca4c20c	116	TPM2_RC_INITIALIZE = 0x0100, /* RC_VER1 */
2be8ffed	117	TPM2_RC_FAILURE = 0x0101,
7a1d7e6d	118	TPM2_RC_DISABLED = 0x0120,
095531f8	119	TPM2_RC_COMMAND_CODE = 0x0143,
5ca4c20c	120	TPM2_RC_TESTING = 0x090A, /* RC_WARN */
745b361e	121	TPM2_RC_REFERENCE_H0 = 0x0910,
e2fb992d	122	TPM2_RC_RETRY = 0x0922,
7a1d7e6d JS	123	};
	124
	125	enum tpm2_algorithms {
1db15344	126	TPM2_ALG_ERROR = 0x0000,
7a1d7e6d	127	TPM2_ALG_SHA1 = 0x0004,
954650ef JS	128	TPM2_ALG_KEYEDHASH = 0x0008,
954650ef JS	129	TPM2_ALG_SHA256 = 0x000B,
5ca4c20c JS	130	TPM2_ALG_SHA384 = 0x000C,
	131	TPM2_ALG_SHA512 = 0x000D,
	132	TPM2_ALG_NULL = 0x0010,
	133	TPM2_ALG_SM3_256 = 0x0012,
7a1d7e6d JS	134	};
	135
	136	enum tpm2_command_codes {
899102bc TW	137	TPM2_CC_FIRST = 0x011F,
	138	TPM2_CC_HIERARCHY_CONTROL = 0x0121,
	139	TPM2_CC_HIERARCHY_CHANGE_AUTH = 0x0129,
	140	TPM2_CC_CREATE_PRIMARY = 0x0131,
	141	TPM2_CC_SEQUENCE_COMPLETE = 0x013E,
	142	TPM2_CC_SELF_TEST = 0x0143,
	143	TPM2_CC_STARTUP = 0x0144,
	144	TPM2_CC_SHUTDOWN = 0x0145,
	145	TPM2_CC_NV_READ = 0x014E,
	146	TPM2_CC_CREATE = 0x0153,
	147	TPM2_CC_LOAD = 0x0157,
	148	TPM2_CC_SEQUENCE_UPDATE = 0x015C,
	149	TPM2_CC_UNSEAL = 0x015E,
	150	TPM2_CC_CONTEXT_LOAD = 0x0161,
	151	TPM2_CC_CONTEXT_SAVE = 0x0162,
	152	TPM2_CC_FLUSH_CONTEXT = 0x0165,
	153	TPM2_CC_VERIFY_SIGNATURE = 0x0177,
	154	TPM2_CC_GET_CAPABILITY = 0x017A,
	155	TPM2_CC_GET_RANDOM = 0x017B,
	156	TPM2_CC_PCR_READ = 0x017E,
	157	TPM2_CC_PCR_EXTEND = 0x0182,
	158	TPM2_CC_EVENT_SEQUENCE_COMPLETE = 0x0185,
	159	TPM2_CC_HASH_SEQUENCE_START = 0x0186,
	160	TPM2_CC_CREATE_LOADED = 0x0191,
	161	TPM2_CC_LAST = 0x0193, /* Spec 1.36 */
7a1d7e6d JS	162	};
	163
	164	enum tpm2_permanent_handles {
	165	TPM2_RS_PW = 0x40000009,
	166	};
	167
	168	enum tpm2_capabilities {
745b361e	169	TPM2_CAP_HANDLES = 1,
58472f5c	170	TPM2_CAP_COMMANDS = 2,
1db15344	171	TPM2_CAP_PCRS = 5,
7a1d7e6d JS	172	TPM2_CAP_TPM_PROPERTIES = 6,
	173	};
	174
58472f5c JS	175	enum tpm2_properties {
	176	TPM_PT_TOTAL_COMMANDS = 0x0129,
	177	};
	178
7a1d7e6d JS	179	enum tpm2_startup_types {
	180	TPM2_SU_CLEAR = 0x0000,
	181	TPM2_SU_STATE = 0x0001,
	182	};
	183
58472f5c JS	184	enum tpm2_cc_attrs {
	185	TPM2_CC_ATTR_CHANDLES = 25,
	186	TPM2_CC_ATTR_RHANDLE = 28,
	187	};
	188
4e401fb0	189	#define TPM_VID_INTEL 0x8086
1f866057 SB	190	#define TPM_VID_WINBOND 0x1050
1f866057 SB	191	#define TPM_VID_STM 0x104A
4e401fb0	192
0dc55365 JS	193	#define TPM_PPI_VERSION_LEN 3
0dc55365 JS	194
745b361e JS	195	struct tpm_space {
	196	u32 context_tbl[3];
	197	u8 *context_buf;
4d57856a JB	198	u32 session_tbl[3];
4d57856a JB	199	u8 *session_buf;
745b361e JS	200	};
745b361e JS	201
afb5abc2	202	enum tpm_chip_flags {
9b774d5c	203	TPM_CHIP_FLAG_TPM2 = BIT(1),
570a3609	204	TPM_CHIP_FLAG_IRQ = BIT(2),
2f9f5377	205	TPM_CHIP_FLAG_VIRTUAL = BIT(3),
d1d253cf	206	TPM_CHIP_FLAG_HAVE_TIMEOUTS = BIT(4),
b5d0ebc9	207	TPM_CHIP_FLAG_ALWAYS_POWERED = BIT(5),
afb5abc2 JS	208	};
afb5abc2 JS	209
4d23cc32 NJ	210	struct tpm_bios_log {
	211	void *bios_event_log;
	212	void *bios_event_log_end;
	213	};
	214
748935ee NJ	215	struct tpm_chip_seqops {
	216	struct tpm_chip *chip;
	217	const struct seq_operations *seqops;
	218	};
	219
1da177e4	220	struct tpm_chip {
313d21ee	221	struct device dev;
fdc915f7	222	struct device devs;
313d21ee	223	struct cdev cdev;
fdc915f7	224	struct cdev cdevs;
313d21ee	225
4e26195f JG	226	/* A driver callback under ops cannot be run unless ops_sem is held
	227	* (sometimes implicitly, eg for the sysfs code). ops becomes null
	228	* when the driver is unregistered, see tpm_try_get_ops.
	229	*/
	230	struct rw_semaphore ops_sem;
5f82e9f0	231	const struct tpm_class_ops *ops;
4e26195f	232
748935ee NJ	233	struct tpm_bios_log log;
	234	struct tpm_chip_seqops bin_log_seqops;
	235	struct tpm_chip_seqops ascii_log_seqops;
	236
afb5abc2	237	unsigned int flags;
1da177e4 LT	238
1da177e4 LT	239	int dev_num; /* /dev/tpm# */
dc36d32c	240	unsigned long is_open; /* only one allowed */
1da177e4	241
6e592a06 JG	242	char hwrng_name[64];
	243	struct hwrng hwrng;
	244
d081d470	245	struct mutex tpm_mutex; /* tpm is processing */
1da177e4	246
af782f33 CR	247	unsigned long timeout_a; /* jiffies */
	248	unsigned long timeout_b; /* jiffies */
	249	unsigned long timeout_c; /* jiffies */
	250	unsigned long timeout_d; /* jiffies */
	251	bool timeout_adjusted;
076d3564	252	unsigned long duration[TPM_NUM_DURATIONS]; /* jiffies */
af782f33	253	bool duration_adjusted;
1da177e4	254
cd9b7631	255	struct dentry *bios_dir[TPM_NUM_EVENT_LOG_FILES];
55a82ab3	256
062807f2	257	const struct attribute_group *groups[3];
9b774d5c	258	unsigned int groups_cnt;
1db15344 NJ	259
1db15344 NJ	260	u16 active_banks[7];
062807f2	261	#ifdef CONFIG_ACPI
0dc55365 JS	262	acpi_handle acpi_dev_handle;
	263	char ppi_version[TPM_PPI_VERSION_LEN + 1];
	264	#endif /* CONFIG_ACPI */
58472f5c	265
745b361e	266	struct tpm_space work_space;
58472f5c JS	267	u32 nr_commands;
58472f5c JS	268	u32 *cc_attrs_tbl;
877c57d0 JS	269
	270	/* active locality */
	271	int locality;
1da177e4 LT	272	};
1da177e4 LT	273
9b774d5c	274	#define to_tpm_chip(d) container_of(d, struct tpm_chip, dev)
27084efe	275
08837438 RA	276	struct tpm_input_header {
	277	__be16 tag;
	278	__be32 length;
	279	__be32 ordinal;
348df8db	280	} __packed;
08837438 RA	281
	282	struct tpm_output_header {
	283	__be16 tag;
	284	__be32 length;
	285	__be32 return_code;
348df8db	286	} __packed;
08837438	287
06e93279	288	#define TPM_TAG_RQU_COMMAND 193
000a07b0	289
08837438 RA	290	struct stclear_flags_t {
	291	__be16 tag;
	292	u8 deactivated;
	293	u8 disableForceClear;
	294	u8 physicalPresence;
	295	u8 physicalPresenceLock;
	296	u8 bGlobalLock;
348df8db	297	} __packed;
08837438 RA	298
	299	struct tpm_version_t {
	300	u8 Major;
	301	u8 Minor;
	302	u8 revMajor;
	303	u8 revMinor;
348df8db	304	} __packed;
08837438 RA	305
	306	struct tpm_version_1_2_t {
	307	__be16 tag;
	308	u8 Major;
	309	u8 Minor;
	310	u8 revMajor;
	311	u8 revMinor;
348df8db	312	} __packed;
08837438 RA	313
	314	struct timeout_t {
	315	__be32 a;
	316	__be32 b;
	317	__be32 c;
	318	__be32 d;
348df8db	319	} __packed;
08837438 RA	320
	321	struct duration_t {
	322	__be32 tpm_short;
	323	__be32 tpm_medium;
	324	__be32 tpm_long;
348df8db	325	} __packed;
08837438 RA	326
	327	struct permanent_flags_t {
	328	__be16 tag;
	329	u8 disable;
	330	u8 ownership;
	331	u8 deactivated;
	332	u8 readPubek;
	333	u8 disableOwnerClear;
	334	u8 allowMaintenance;
	335	u8 physicalPresenceLifetimeLock;
	336	u8 physicalPresenceHWEnable;
	337	u8 physicalPresenceCMDEnable;
	338	u8 CEKPUsed;
	339	u8 TPMpost;
	340	u8 TPMpostLock;
	341	u8 FIPS;
	342	u8 operator;
	343	u8 enableRevokeEK;
	344	u8 nvLocked;
	345	u8 readSRKPub;
	346	u8 tpmEstablished;
	347	u8 maintenanceDone;
	348	u8 disableFullDALogicInfo;
348df8db	349	} __packed;
08837438 RA	350
	351	typedef union {
	352	struct permanent_flags_t perm_flags;
	353	struct stclear_flags_t stclear_flags;
a118cf2a	354	__u8 owned;
08837438 RA	355	__be32 num_pcrs;
	356	struct tpm_version_t tpm_version;
	357	struct tpm_version_1_2_t tpm_version_1_2;
	358	__be32 manufacturer_id;
	359	struct timeout_t timeout;
	360	struct duration_t duration;
	361	} cap_t;
	362
000a07b0	363	enum tpm_capabilities {
84fda152 JS	364	TPM_CAP_FLAG = 4,
	365	TPM_CAP_PROP = 5,
	366	TPM_CAP_VERSION_1_1 = 0x06,
	367	TPM_CAP_VERSION_1_2 = 0x1A,
000a07b0 JG	368	};
	369
	370	enum tpm_sub_capabilities {
84fda152 JS	371	TPM_CAP_PROP_PCR = 0x101,
	372	TPM_CAP_PROP_MANUFACTURER = 0x103,
	373	TPM_CAP_FLAG_PERM = 0x108,
	374	TPM_CAP_FLAG_VOL = 0x109,
	375	TPM_CAP_PROP_OWNER = 0x111,
	376	TPM_CAP_PROP_TIS_TIMEOUT = 0x115,
	377	TPM_CAP_PROP_TIS_DURATION = 0x120,
000a07b0 JG	378	};
000a07b0 JG	379
08837438 RA	380	typedef union {
	381	struct tpm_input_header in;
	382	struct tpm_output_header out;
	383	} tpm_cmd_header;
	384
659aaf2b RA	385	struct tpm_pcrread_out {
659aaf2b RA	386	u8 pcr_result[TPM_DIGEST_SIZE];
348df8db	387	} __packed;
659aaf2b RA	388
	389	struct tpm_pcrread_in {
	390	__be32 pcr_idx;
348df8db	391	} __packed;
659aaf2b	392
41ab999c KY	393	/* 128 bytes is an arbitrary cap. This could be as large as TPM_BUFSIZE - 18
	394	* bytes, but 128 is still a relatively large number of random bytes and
	395	* anything much bigger causes users of struct tpm_cmd_t to start getting
	396	* compiler warnings about stack frame size. */
	397	#define TPM_MAX_RNG_DATA 128
	398
	399	struct tpm_getrandom_out {
	400	__be32 rng_data_len;
	401	u8 rng_data[TPM_MAX_RNG_DATA];
348df8db	402	} __packed;
41ab999c KY	403
	404	struct tpm_getrandom_in {
	405	__be32 num_bytes;
348df8db	406	} __packed;
41ab999c	407
08837438	408	typedef union {
659aaf2b RA	409	struct tpm_pcrread_in pcrread_in;
659aaf2b RA	410	struct tpm_pcrread_out pcrread_out;
41ab999c KY	411	struct tpm_getrandom_in getrandom_in;
41ab999c KY	412	struct tpm_getrandom_out getrandom_out;
08837438 RA	413	} tpm_cmd_params;
	414
	415	struct tpm_cmd_t {
	416	tpm_cmd_header header;
	417	tpm_cmd_params params;
348df8db	418	} __packed;
08837438	419
c1f92b4b	420
a74f8b36 JS	421	/* A string buffer type for constructing TPM commands. This is based on the
	422	* ideas of string buffer code in security/keys/trusted.h but is heap based
	423	* in order to keep the stack usage minimal.
	424	*/
	425
	426	enum tpm_buf_flags {
	427	TPM_BUF_OVERFLOW = BIT(0),
	428	};
	429
	430	struct tpm_buf {
	431	struct page *data_page;
	432	unsigned int flags;
	433	u8 *data;
	434	};
	435
ce63c05b	436	static inline void tpm_buf_reset(struct tpm_buf *buf, u16 tag, u32 ordinal)
a74f8b36 JS	437	{
a74f8b36 JS	438	struct tpm_input_header *head;
ce63c05b JS	439	head = (struct tpm_input_header *)buf->data;
	440	head->tag = cpu_to_be16(tag);
	441	head->length = cpu_to_be32(sizeof(*head));
	442	head->ordinal = cpu_to_be32(ordinal);
	443	}
a74f8b36	444
ce63c05b JS	445	static inline int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal)
ce63c05b JS	446	{
a74f8b36 JS	447	buf->data_page = alloc_page(GFP_HIGHUSER);
	448	if (!buf->data_page)
	449	return -ENOMEM;
	450
	451	buf->flags = 0;
	452	buf->data = kmap(buf->data_page);
ce63c05b	453	tpm_buf_reset(buf, tag, ordinal);
a74f8b36 JS	454	return 0;
	455	}
	456
	457	static inline void tpm_buf_destroy(struct tpm_buf *buf)
	458	{
	459	kunmap(buf->data_page);
	460	__free_page(buf->data_page);
	461	}
	462
	463	static inline u32 tpm_buf_length(struct tpm_buf *buf)
	464	{
	465	struct tpm_input_header head = (struct tpm_input_header ) buf->data;
	466
	467	return be32_to_cpu(head->length);
	468	}
	469
	470	static inline u16 tpm_buf_tag(struct tpm_buf *buf)
	471	{
	472	struct tpm_input_header head = (struct tpm_input_header ) buf->data;
	473
	474	return be16_to_cpu(head->tag);
	475	}
	476
	477	static inline void tpm_buf_append(struct tpm_buf *buf,
	478	const unsigned char *new_data,
	479	unsigned int new_len)
	480	{
	481	struct tpm_input_header head = (struct tpm_input_header ) buf->data;
	482	u32 len = tpm_buf_length(buf);
	483
	484	/* Return silently if overflow has already happened. */
	485	if (buf->flags & TPM_BUF_OVERFLOW)
	486	return;
	487
	488	if ((len + new_len) > PAGE_SIZE) {
	489	WARN(1, "tpm_buf: overflow\n");
	490	buf->flags \|= TPM_BUF_OVERFLOW;
	491	return;
	492	}
	493
	494	memcpy(&buf->data[len], new_data, new_len);
	495	head->length = cpu_to_be32(len + new_len);
	496	}
	497
	498	static inline void tpm_buf_append_u8(struct tpm_buf *buf, const u8 value)
	499	{
	500	tpm_buf_append(buf, &value, 1);
	501	}
	502
	503	static inline void tpm_buf_append_u16(struct tpm_buf *buf, const u16 value)
	504	{
	505	__be16 value2 = cpu_to_be16(value);
	506
	507	tpm_buf_append(buf, (u8 *) &value2, 2);
	508	}
	509
	510	static inline void tpm_buf_append_u32(struct tpm_buf *buf, const u32 value)
	511	{
	512	__be32 value2 = cpu_to_be32(value);
	513
	514	tpm_buf_append(buf, (u8 *) &value2, 4);
	515	}
	516
313d21ee	517	extern struct class *tpm_class;
fdc915f7	518	extern struct class *tpmrm_class;
313d21ee JS	519	extern dev_t tpm_devt;
313d21ee JS	520	extern const struct file_operations tpm_fops;
fdc915f7	521	extern const struct file_operations tpmrm_fops;
15516788	522	extern struct idr dev_nums_idr;
313d21ee	523
627448e8	524	/**
58bac8cc	525	* enum tpm_transmit_flags - flags for tpm_transmit()
627448e8	526	*
58bac8cc JS	527	* @TPM_TRANSMIT_UNLOCKED: do not lock the chip
	528	* @TPM_TRANSMIT_NESTED: discard setup steps (power management,
	529	* locality) including locking (i.e. implicit
	530	* UNLOCKED)
627448e8	531	*/
d4816edf	532	enum tpm_transmit_flags {
58bac8cc JS	533	TPM_TRANSMIT_UNLOCKED = BIT(0),
58bac8cc JS	534	TPM_TRANSMIT_NESTED = BIT(1),
d4816edf JS	535	};
d4816edf JS	536
745b361e JS	537	ssize_t tpm_transmit(struct tpm_chip chip, struct tpm_space space,
	538	u8 *buf, size_t bufsiz, unsigned int flags);
	539	ssize_t tpm_transmit_cmd(struct tpm_chip chip, struct tpm_space space,
62c09e12	540	void *buf, size_t bufsiz,
745b361e	541	size_t min_rsp_body_length, unsigned int flags,
c659af78	542	const char *desc);
19cbe4f6	543	int tpm_startup(struct tpm_chip *chip);
d4abd956	544	int tpm_get_timeouts(struct tpm_chip *);
cae8b441	545	int tpm1_auto_startup(struct tpm_chip *chip);
d4abd956	546	int tpm_do_selftest(struct tpm_chip *chip);
70a3199a TW	547
70a3199a TW	548	int tpm1_get_timeouts(struct tpm_chip *chip);
b2d6e6de	549	unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
1ad6640c TW	550	int tpm1_pcr_extend(struct tpm_chip chip, int pcr_idx, const u8 hash,
1ad6640c TW	551	const char *log_msg);
f4d916b7 TW	552	ssize_t tpm1_getcap(struct tpm_chip chip, u32 subcap_id, cap_t cap,
f4d916b7 TW	553	const char *desc, size_t min_cap_length);
d856c00f	554	unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
d4abd956 JS	555	int tpm_pm_suspend(struct device *dev);
d4abd956 JS	556	int tpm_pm_resume(struct device *dev);
f84fdff0	557
9f3fc7bc HA	558	static inline void tpm_msleep(unsigned int delay_msec)
9f3fc7bc HA	559	{
5ef924d9 NJ	560	usleep_range((delay_msec * 1000) - TPM_TIMEOUT_RANGE_US,
5ef924d9 NJ	561	delay_msec * 1000);
9f3fc7bc HA	562	};
9f3fc7bc HA	563
fc1d52b7	564	struct tpm_chip tpm_find_get_ops(struct tpm_chip chip);
4e26195f JG	565	__must_check int tpm_try_get_ops(struct tpm_chip *chip);
	566	void tpm_put_ops(struct tpm_chip *chip);
	567
d4abd956 JS	568	struct tpm_chip tpm_chip_alloc(struct device dev,
	569	const struct tpm_class_ops *ops);
	570	struct tpm_chip tpmm_chip_alloc(struct device pdev,
	571	const struct tpm_class_ops *ops);
	572	int tpm_chip_register(struct tpm_chip *chip);
	573	void tpm_chip_unregister(struct tpm_chip *chip);
afb5abc2	574
062807f2	575	void tpm_sysfs_add_device(struct tpm_chip *chip);
afdba32e	576
000a07b0 JG	577	int tpm_pcr_read_dev(struct tpm_chip chip, int pcr_idx, u8 res_buf);
000a07b0 JG	578
f84fdff0	579	#ifdef CONFIG_ACPI
9b774d5c	580	extern void tpm_add_ppi(struct tpm_chip *chip);
f84fdff0	581	#else
9b774d5c	582	static inline void tpm_add_ppi(struct tpm_chip *chip)
1631cfb7 GW	583	{
1631cfb7 GW	584	}
f84fdff0	585	#endif
7a1d7e6d	586
2d56c718	587	static inline u32 tpm2_rc_value(u32 rc)
7d761119 JS	588	{
	589	return (rc & BIT(7)) ? rc & 0xff : rc;
	590	}
	591
70a3199a	592	int tpm2_get_timeouts(struct tpm_chip *chip);
7a1d7e6d	593	int tpm2_pcr_read(struct tpm_chip chip, int pcr_idx, u8 res_buf);
c1f92b4b NJ	594	int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, u32 count,
c1f92b4b NJ	595	struct tpm2_digest *digests);
ce63c05b	596	int tpm2_get_random(struct tpm_chip chip, u8 dest, size_t max);
9aa36b39 JS	597	void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
9aa36b39 JS	598	unsigned int flags);
954650ef JS	599	int tpm2_seal_trusted(struct tpm_chip *chip,
	600	struct trusted_key_payload *payload,
	601	struct trusted_key_options *options);
	602	int tpm2_unseal_trusted(struct tpm_chip *chip,
	603	struct trusted_key_payload *payload,
	604	struct trusted_key_options *options);
7a1d7e6d JS	605	ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32 property_id,
	606	u32 value, const char desc);
	607
cae8b441	608	int tpm2_auto_startup(struct tpm_chip *chip);
d4abd956 JS	609	void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
d4abd956 JS	610	unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
d4abd956	611	int tpm2_probe(struct tpm_chip *chip);
58472f5c	612	int tpm2_find_cc(struct tpm_chip *chip, u32 cc);
745b361e	613	int tpm2_init_space(struct tpm_space *space);
4d57856a	614	void tpm2_del_space(struct tpm_chip chip, struct tpm_space space);
745b361e JS	615	int tpm2_prepare_space(struct tpm_chip chip, struct tpm_space space, u32 cc,
	616	u8 *cmd);
	617	int tpm2_commit_space(struct tpm_chip chip, struct tpm_space space,
	618	u32 cc, u8 buf, size_t bufsiz);
fd3ec366	619
fd3ec366 TW	620	int tpm_bios_log_setup(struct tpm_chip *chip);
fd3ec366 TW	621	void tpm_bios_log_teardown(struct tpm_chip *chip);
9e1b74a6 TS	622	int tpm_dev_common_init(void);
9e1b74a6 TS	623	void tpm_dev_common_exit(void);
d2efee6e	624	#endif