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/*
* Copyright (c) 2010-2012 United States Government, as represented by
* the Secretary of Defense. All rights reserved.
*
* This code has been derived from drivers/char/tpm.c
* from the linux kernel
*
* Copyright (C) 2004 IBM Corporation
*
* This code has also been derived from drivers/char/tpm/tpm_tis.c
* from the linux kernel
*
* Copyright (C) 2005, 2006 IBM Corporation
*
* 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_TIS_H
#define TPM_TIS_H
#include <mini-os/types.h>
#include <mini-os/byteorder.h>
#define TPM_TIS_EN_LOCL0 1
#define TPM_TIS_EN_LOCL1 (1 << 1)
#define TPM_TIS_EN_LOCL2 (1 << 2)
#define TPM_TIS_EN_LOCL3 (1 << 3)
#define TPM_TIS_EN_LOCL4 (1 << 4)
#define TPM_TIS_EN_LOCLALL (TPM_TIS_EN_LOCL0 | TPM_TIS_EN_LOCL1 | TPM_TIS_EN_LOCL2 | TPM_TIS_EN_LOCL3 | TPM_TIS_EN_LOCL4)
#define TPM_TIS_LOCL_INT_TO_FLAG(x) (1 << x)
#define TPM_BASEADDR 0xFED40000
#define TPM_PROBE_IRQ 0xFFFF
struct tpm_chip;
struct tpm_chip* init_tpm_tis(unsigned long baseaddr, int localities, unsigned int irq);
void shutdown_tpm_tis(struct tpm_chip* tpm);
int tpm_tis_request_locality(struct tpm_chip* tpm, int locality);
int tpm_tis_cmd(struct tpm_chip* tpm, uint8_t* req, size_t reqlen, uint8_t** resp, size_t* resplen);
#ifdef HAVE_LIBC
#include <sys/stat.h>
#include <fcntl.h>
/* POSIX IO functions:
* use tpm_tis_open() to get a file descriptor to the tpm device
* use write() on the fd to send a command to the backend. You must
* include the entire command in a single call to write().
* use read() on the fd to read the response. You can use
* fstat() to get the size of the response and lseek() to seek on it.
*/
int tpm_tis_open(struct tpm_chip* tpm);
int tpm_tis_posix_read(int fd, uint8_t* buf, size_t count);
int tpm_tis_posix_write(int fd, const uint8_t* buf, size_t count);
int tpm_tis_posix_fstat(int fd, struct stat* buf);
#endif
#endif
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