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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/hw_random.h>#include <linux/acpi.h>#include <linux/cdev.h>#include <linux/fs.h>#include <linux/highmem.h>#include <crypto/hash_info.h>#include <crypto/aes.h>
#include <linux/tpm_command.h>#include <linux/tpm_buf.h>
struct tpm_chip;struct trusted_key_payload;struct trusted_key_options;/* opaque structure, holds auth session parameters like the session key */struct tpm2_auth;
enum TPM_OPS_FLAGS { TPM_OPS_AUTO_STARTUP = BIT(0),};
struct tpm_class_ops { unsigned int flags; const u8 req_complete_mask; const u8 req_complete_val; bool (*req_canceled)(struct tpm_chip *chip, u8 status); int (*recv) (struct tpm_chip *chip, u8 *buf, size_t len); int (*send)(struct tpm_chip *chip, u8 *buf, size_t bufsiz, size_t cmd_len); void (*cancel) (struct tpm_chip *chip); u8 (*status) (struct tpm_chip *chip); void (*update_timeouts)(struct tpm_chip *chip, unsigned long *timeout_cap); void (*update_durations)(struct tpm_chip *chip, unsigned long *duration_cap); int (*go_idle)(struct tpm_chip *chip); int (*cmd_ready)(struct tpm_chip *chip); int (*request_locality)(struct tpm_chip *chip, int loc); int (*relinquish_locality)(struct tpm_chip *chip, int loc); void (*clk_enable)(struct tpm_chip *chip, bool value);};
#define TPM_NUM_EVENT_LOG_FILES 3
/* 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_PPI_VERSION_LEN 3
struct tpm_space { u32 context_tbl[3]; u8 *context_buf; u32 session_tbl[3]; u8 *session_buf; u32 buf_size;};
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;};
/* Fixed define for the curve we use which is NIST_P256 */#define EC_PT_SZ 32
/* * fixed define for the size of a name. This is actually HASHALG size * plus 2, so 32 for SHA256 */#define TPM2_NAME_SIZE 34
/* * The maximum size for an object context */#define TPM2_MAX_CONTEXT_SIZE 4096
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;
const struct attribute_group *groups[3 + TPM_MAX_HASHES]; unsigned int groups_cnt;
u32 nr_allocated_banks; struct tpm_bank_info allocated_banks[TPM2_MAX_PCR_BANKS];#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 last_cc; u32 nr_commands; u32 *cc_attrs_tbl;
/* active locality */ int locality;
#ifdef CONFIG_TCG_TPM2_HMAC /* details for communication security via sessions */
/* saved context for NULL seed */ u8 null_key_context[TPM2_MAX_CONTEXT_SIZE]; /* name of NULL seed */ u8 null_key_name[TPM2_NAME_SIZE]; u8 null_ec_key_x[EC_PT_SZ]; u8 null_ec_key_y[EC_PT_SZ]; struct tpm2_auth *auth;#endif};
static inline enum tpm2_mso_type tpm2_handle_mso(u32 handle){ return handle >> 24;}
#define TPM_VID_INTEL 0x8086#define TPM_VID_WINBOND 0x1050#define TPM_VID_STM 0x104A#define TPM_VID_ATML 0x1114#define TPM_VID_IFX 0x15D1
enum tpm_chip_flags { TPM_CHIP_FLAG_BOOTSTRAPPED = BIT(0), 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), TPM_CHIP_FLAG_FIRMWARE_POWER_MANAGED = BIT(6), TPM_CHIP_FLAG_FIRMWARE_UPGRADE = BIT(7), TPM_CHIP_FLAG_SUSPENDED = BIT(8), TPM_CHIP_FLAG_HWRNG_DISABLED = BIT(9), TPM_CHIP_FLAG_DISABLE = BIT(10), TPM_CHIP_FLAG_SYNC = BIT(11),};
#define to_tpm_chip(d) container_of(d, struct tpm_chip, dev)
struct tpm2_hash { unsigned int crypto_id; unsigned int tpm_id;};
/* * Check if TPM device is in the firmware upgrade mode. */static inline bool tpm_is_firmware_upgrade(struct tpm_chip *chip){ return chip->flags & TPM_CHIP_FLAG_FIRMWARE_UPGRADE;}
static inline u32 tpm2_rc_value(u32 rc){ return (rc & BIT(7)) ? rc & 0xbf : rc;}
/* * Convert a return value from tpm_transmit_cmd() to POSIX error code. */static inline ssize_t tpm_ret_to_err(ssize_t ret){ if (ret < 0) return ret;
switch (tpm2_rc_value(ret)) { case TPM2_RC_SUCCESS: return 0; case TPM2_RC_SESSION_MEMORY: return -ENOMEM; case TPM2_RC_HASH: return -EINVAL; default: return -EPERM; }}
#if defined(CONFIG_TCG_TPM) || defined(CONFIG_TCG_TPM_MODULE)
extern int tpm_is_tpm2(struct tpm_chip *chip);extern __must_check int tpm_try_get_ops(struct tpm_chip *chip);extern void tpm_put_ops(struct tpm_chip *chip);extern ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_buf *buf, size_t min_rsp_body_length, const char *desc);extern int tpm_pcr_read(struct tpm_chip *chip, u32 pcr_idx, struct tpm_digest *digest);extern int tpm_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, struct tpm_digest *digests);extern int tpm_get_random(struct tpm_chip *chip, u8 *data, size_t max);extern struct tpm_chip *tpm_default_chip(void);void tpm2_flush_context(struct tpm_chip *chip, u32 handle);int tpm2_find_hash_alg(unsigned int crypto_id);
static inline void tpm_buf_append_empty_auth(struct tpm_buf *buf, u32 handle){ /* simple authorization for empty auth */ tpm_buf_append_u32(buf, 9); /* total length of auth */ tpm_buf_append_u32(buf, handle); tpm_buf_append_u16(buf, 0); /* nonce len */ tpm_buf_append_u8(buf, 0); /* attributes */ tpm_buf_append_u16(buf, 0); /* hmac len */}#elsestatic inline int tpm_is_tpm2(struct tpm_chip *chip){ return -ENODEV;}static inline int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, struct tpm_digest *digest){ return -ENODEV;}
static inline int tpm_pcr_extend(struct tpm_chip *chip, u32 pcr_idx, struct tpm_digest *digests){ return -ENODEV;}
static inline int tpm_get_random(struct tpm_chip *chip, u8 *data, size_t max){ return -ENODEV;}
static inline struct tpm_chip *tpm_default_chip(void){ return NULL;}
static inline void tpm_buf_append_empty_auth(struct tpm_buf *buf, u32 handle){}#endif
static inline struct tpm2_auth *tpm2_chip_auth(struct tpm_chip *chip){#ifdef CONFIG_TCG_TPM2_HMAC return chip->auth;#else return NULL;#endif}
int tpm_buf_append_name(struct tpm_chip *chip, struct tpm_buf *buf, u32 handle, u8 *name);void tpm_buf_append_hmac_session(struct tpm_chip *chip, struct tpm_buf *buf, u8 attributes, u8 *passphrase, int passphraselen);void tpm_buf_append_auth(struct tpm_chip *chip, struct tpm_buf *buf, u8 *passphrase, int passphraselen);
#ifdef CONFIG_TCG_TPM2_HMAC
int tpm2_start_auth_session(struct tpm_chip *chip);int tpm_buf_fill_hmac_session(struct tpm_chip *chip, struct tpm_buf *buf);int tpm_buf_check_hmac_response(struct tpm_chip *chip, struct tpm_buf *buf, int rc);void tpm2_end_auth_session(struct tpm_chip *chip);#else#include <linux/unaligned.h>
static inline int tpm2_start_auth_session(struct tpm_chip *chip){ return 0;}static inline void tpm2_end_auth_session(struct tpm_chip *chip){}
static inline int tpm_buf_fill_hmac_session(struct tpm_chip *chip, struct tpm_buf *buf){ return 0;}
static inline int tpm_buf_check_hmac_response(struct tpm_chip *chip, struct tpm_buf *buf, int rc){ return rc;}#endif /* CONFIG_TCG_TPM2_HMAC */
#endif