/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2005, 2006 IBM Corporation * Copyright (C) 2014, 2015 Intel Corporation * * Authors: * Leendert van Doorn <[email protected]> * Kylene Hall <[email protected]> * * Maintained by: <[email protected]> * * Device driver for TCG/TCPA TPM (trusted platform module). * Specifications at www.trustedcomputinggroup.org * * This device driver implements the TPM interface as defined in * the TCG TPM Interface Spec version 1.2, revision 1.0. */ #ifndef __TPM_TIS_CORE_H__ #define __TPM_TIS_CORE_H__ #include "tpm.h" enum tis_access { … }; enum tis_status { … }; enum tis_int_flags { … }; enum tis_defaults { … }; /* Some timeout values are needed before it is known whether the chip is * TPM 1.0 or TPM 2.0. */ #define TIS_TIMEOUT_A_MAX … #define TIS_TIMEOUT_B_MAX … #define TIS_TIMEOUT_C_MAX … #define TIS_TIMEOUT_D_MAX … #define TPM_ACCESS(l) … #define TPM_INT_ENABLE(l) … #define TPM_INT_VECTOR(l) … #define TPM_INT_STATUS(l) … #define TPM_INTF_CAPS(l) … #define TPM_STS(l) … #define TPM_STS3(l) … #define TPM_DATA_FIFO(l) … #define TPM_DID_VID(l) … #define TPM_RID(l) … #define LPC_CNTRL_OFFSET … #define LPC_CLKRUN_EN … #define INTEL_LEGACY_BLK_BASE_ADDR … #define ILB_REMAP_SIZE … enum tpm_tis_flags { … }; struct tpm_tis_data { … }; /* * IO modes to indicate how many bytes should be read/written at once in the * tpm_tis_phy_ops read_bytes/write_bytes calls. Use TPM_TIS_PHYS_8 to * receive/transmit byte-wise, TPM_TIS_PHYS_16 for two bytes etc. */ enum tpm_tis_io_mode { … }; struct tpm_tis_phy_ops { … }; static inline int tpm_tis_read_bytes(struct tpm_tis_data *data, u32 addr, u16 len, u8 *result) { … } static inline int tpm_tis_read8(struct tpm_tis_data *data, u32 addr, u8 *result) { … } static inline int tpm_tis_read16(struct tpm_tis_data *data, u32 addr, u16 *result) { … } static inline int tpm_tis_read32(struct tpm_tis_data *data, u32 addr, u32 *result) { … } static inline int tpm_tis_write_bytes(struct tpm_tis_data *data, u32 addr, u16 len, const u8 *value) { … } static inline int tpm_tis_write8(struct tpm_tis_data *data, u32 addr, u8 value) { … } static inline int tpm_tis_write32(struct tpm_tis_data *data, u32 addr, u32 value) { … } static inline int tpm_tis_verify_crc(struct tpm_tis_data *data, size_t len, const u8 *value) { … } static inline bool is_bsw(void) { … } void tpm_tis_remove(struct tpm_chip *chip); int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq, const struct tpm_tis_phy_ops *phy_ops, acpi_handle acpi_dev_handle); #ifdef CONFIG_PM_SLEEP int tpm_tis_resume(struct device *dev); #endif #endif
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