[people/ms/u-boot.git] / drivers / tpm / tpm_private.h

/*
 * Copyright (C) 2011 Infineon Technologies
 *
 * Authors:
 * Peter Huewe <huewe.external@infineon.com>
 *
 * Version: 2.1.1
 *
 * Description:
 * Device driver for TCG/TCPA TPM (trusted platform module).
 * Specifications at www.trustedcomputinggroup.org
 *
 * It is based on the Linux kernel driver tpm.c from Leendert van
 * Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
 *
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#ifndef _TPM_PRIVATE_H_
#define _TPM_PRIVATE_H_

#include <linux/compiler.h>
#include <linux/types.h>

enum tpm_timeout {
	TPM_TIMEOUT = 5,	/* msecs */
};

/* Size of external transmit buffer (used in tpm_transmit)*/
#define TPM_BUFSIZE 4096

/* Index of Count field in TPM response buffer */
#define TPM_RSP_SIZE_BYTE	2
#define TPM_RSP_RC_BYTE		6

struct tpm_chip;

struct tpm_vendor_specific {
	const u8 req_complete_mask;
	const u8 req_complete_val;
	const u8 req_canceled;
	int irq;
	int (*recv) (struct tpm_chip *, u8 *, size_t);
	int (*send) (struct tpm_chip *, u8 *, size_t);
	void (*cancel) (struct tpm_chip *);
	u8(*status) (struct tpm_chip *);
	int locality;
	unsigned long timeout_a, timeout_b, timeout_c, timeout_d;  /* msec */
	unsigned long duration[3];  /* msec */
};

struct tpm_chip {
	int is_open;
	struct tpm_vendor_specific vendor;
};

struct tpm_input_header {
	__be16 tag;
	__be32 length;
	__be32 ordinal;
} __packed;

struct tpm_output_header {
	__be16 tag;
	__be32 length;
	__be32 return_code;
} __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;

union cap_t {
	struct timeout_t timeout;
	struct duration_t duration;
};

struct tpm_getcap_params_in {
	__be32 cap;
	__be32 subcap_size;
	__be32 subcap;
} __packed;

struct tpm_getcap_params_out {
	__be32 cap_size;
	union cap_t cap;
} __packed;

union tpm_cmd_header {
	struct tpm_input_header in;
	struct tpm_output_header out;
};

union tpm_cmd_params {
	struct tpm_getcap_params_out getcap_out;
	struct tpm_getcap_params_in getcap_in;
};

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

struct tpm_chip *tpm_register_hardware(const struct tpm_vendor_specific *);

int tpm_vendor_init(uint32_t dev_addr);

void tpm_vendor_cleanup(struct tpm_chip *chip);


#endif
Commit	Line	Data
f6267998 RC	1	/*
	2	* Copyright (C) 2011 Infineon Technologies
	3	*
	4	* Authors:
	5	* Peter Huewe <huewe.external@infineon.com>
	6	*
	7	* Version: 2.1.1
	8	*
	9	* Description:
	10	* Device driver for TCG/TCPA TPM (trusted platform module).
	11	* Specifications at www.trustedcomputinggroup.org
	12	*
	13	* It is based on the Linux kernel driver tpm.c from Leendert van
	14	* Dorn, Dave Safford, Reiner Sailer, and Kyleen Hall.
	15	*
	16	*
	17	* See file CREDITS for list of people who contributed to this
	18	* project.
	19	*
	20	* This program is free software; you can redistribute it and/or
	21	* modify it under the terms of the GNU General Public License as
	22	* published by the Free Software Foundation, version 2 of the
	23	* License.
	24	*
	25	* This program is distributed in the hope that it will be useful,
	26	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	27	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	28	* GNU General Public License for more details.
	29	*
	30	* You should have received a copy of the GNU General Public License
	31	* along with this program; if not, write to the Free Software
	32	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	33	* MA 02111-1307 USA
	34	*/
	35
1b393db5 TWHT	36	#ifndef _TPM_PRIVATE_H_
1b393db5 TWHT	37	#define _TPM_PRIVATE_H_
f6267998 RC	38
f6267998 RC	39	#include <linux/compiler.h>
1b393db5	40	#include <linux/types.h>
f6267998 RC	41
	42	enum tpm_timeout {
	43	TPM_TIMEOUT = 5, /* msecs */
	44	};
	45
	46	/* Size of external transmit buffer (used in tpm_transmit)*/
	47	#define TPM_BUFSIZE 4096
	48
f6267998	49	/* Index of Count field in TPM response buffer */
1b393db5 TWHT	50	#define TPM_RSP_SIZE_BYTE 2
1b393db5 TWHT	51	#define TPM_RSP_RC_BYTE 6
f6267998 RC	52
	53	struct tpm_chip;
	54
	55	struct tpm_vendor_specific {
	56	const u8 req_complete_mask;
	57	const u8 req_complete_val;
	58	const u8 req_canceled;
	59	int irq;
	60	int (recv) (struct tpm_chip , u8 *, size_t);
	61	int (send) (struct tpm_chip , u8 *, size_t);
	62	void (cancel) (struct tpm_chip );
1b393db5	63	u8(status) (struct tpm_chip );
f6267998	64	int locality;
1b393db5 TWHT	65	unsigned long timeout_a, timeout_b, timeout_c, timeout_d; /* msec */
1b393db5 TWHT	66	unsigned long duration[3]; /* msec */
f6267998 RC	67	};
	68
	69	struct tpm_chip {
	70	int is_open;
	71	struct tpm_vendor_specific vendor;
	72	};
	73
	74	struct tpm_input_header {
	75	__be16 tag;
	76	__be32 length;
	77	__be32 ordinal;
	78	} __packed;
	79
	80	struct tpm_output_header {
	81	__be16 tag;
	82	__be32 length;
	83	__be32 return_code;
	84	} __packed;
	85
	86	struct timeout_t {
	87	__be32 a;
	88	__be32 b;
	89	__be32 c;
	90	__be32 d;
	91	} __packed;
	92
	93	struct duration_t {
	94	__be32 tpm_short;
	95	__be32 tpm_medium;
	96	__be32 tpm_long;
	97	} __packed;
	98
	99	union cap_t {
	100	struct timeout_t timeout;
	101	struct duration_t duration;
	102	};
	103
	104	struct tpm_getcap_params_in {
	105	__be32 cap;
	106	__be32 subcap_size;
	107	__be32 subcap;
	108	} __packed;
	109
	110	struct tpm_getcap_params_out {
	111	__be32 cap_size;
	112	union cap_t cap;
	113	} __packed;
	114
	115	union tpm_cmd_header {
	116	struct tpm_input_header in;
	117	struct tpm_output_header out;
	118	};
	119
	120	union tpm_cmd_params {
	121	struct tpm_getcap_params_out getcap_out;
	122	struct tpm_getcap_params_in getcap_in;
	123	};
	124
	125	struct tpm_cmd_t {
	126	union tpm_cmd_header header;
	127	union tpm_cmd_params params;
	128	} __packed;
	129
1b393db5	130	struct tpm_chip tpm_register_hardware(const struct tpm_vendor_specific );
f6267998	131
1b393db5	132	int tpm_vendor_init(uint32_t dev_addr);
f6267998	133
1b393db5	134	void tpm_vendor_cleanup(struct tpm_chip *chip);
f6267998	135
f6267998 RC	136
f6267998 RC	137	#endif