[qemu.git] / hw / tpm / tpm_tis.h

/*
 * tpm_tis.h - QEMU's TPM TIS interface emulator
 *
 * Copyright (C) 2006, 2010-2013 IBM Corporation
 *
 * Authors:
 *  Stefan Berger <[email protected]>
 *  David Safford <[email protected]>
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 *
 * Implementation of the TIS interface according to specs found at
 * http://www.trustedcomputinggroup.org
 *
 */
#ifndef TPM_TPM_TIS_H
#define TPM_TPM_TIS_H

#include "hw/isa/isa.h"
#include "qemu-common.h"

#define TPM_TIS_ADDR_BASE           0xFED40000

#define TPM_TIS_NUM_LOCALITIES      5     /* per spec */
#define TPM_TIS_LOCALITY_SHIFT      12
#define TPM_TIS_NO_LOCALITY         0xff

#define TPM_TIS_IS_VALID_LOCTY(x)   ((x) < TPM_TIS_NUM_LOCALITIES)

#define TPM_TIS_IRQ                 5

#define TPM_TIS_BUFFER_MAX          4096

#define TYPE_TPM_TIS                "tpm-tis"


typedef enum {
    TPM_TIS_STATE_IDLE = 0,
    TPM_TIS_STATE_READY,
    TPM_TIS_STATE_COMPLETION,
    TPM_TIS_STATE_EXECUTION,
    TPM_TIS_STATE_RECEPTION,
} TPMTISState;

/* locality data  -- all fields are persisted */
typedef struct TPMLocality {
    TPMTISState state;
    uint8_t access;
    uint8_t sts;
    uint32_t inte;
    uint32_t ints;

    uint16_t w_offset;
    uint16_t r_offset;
    TPMSizedBuffer w_buffer;
    TPMSizedBuffer r_buffer;
} TPMLocality;

typedef struct TPMTISEmuState {
    QEMUBH *bh;
    uint32_t offset;
    uint8_t buf[TPM_TIS_BUFFER_MAX];

    uint8_t active_locty;
    uint8_t aborting_locty;
    uint8_t next_locty;

    TPMLocality loc[TPM_TIS_NUM_LOCALITIES];

    qemu_irq irq;
    uint32_t irq_num;
} TPMTISEmuState;

#endif /* TPM_TPM_TIS_H */
Commit	Line	Data
d1a0cf73 SB	1	/*
	2	* tpm_tis.h - QEMU's TPM TIS interface emulator
	3	*
	4	* Copyright (C) 2006, 2010-2013 IBM Corporation
	5	*
	6	* Authors:
	7	* Stefan Berger <[email protected]>
	8	* David Safford <[email protected]>
	9	*
	10	* This work is licensed under the terms of the GNU GPL, version 2 or later.
	11	* See the COPYING file in the top-level directory.
	12	*
	13	* Implementation of the TIS interface according to specs found at
	14	* http://www.trustedcomputinggroup.org
	15	*
	16	*/
	17	#ifndef TPM_TPM_TIS_H
	18	#define TPM_TPM_TIS_H
	19
0d09e41a	20	#include "hw/isa/isa.h"
d1a0cf73 SB	21	#include "qemu-common.h"
	22
	23	#define TPM_TIS_ADDR_BASE 0xFED40000
	24
	25	#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
	26	#define TPM_TIS_LOCALITY_SHIFT 12
	27	#define TPM_TIS_NO_LOCALITY 0xff
	28
	29	#define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES)
	30
	31	#define TPM_TIS_IRQ 5
	32
	33	#define TPM_TIS_BUFFER_MAX 4096
	34
	35	#define TYPE_TPM_TIS "tpm-tis"
	36
	37
d1a0cf73 SB	38	typedef enum {
	39	TPM_TIS_STATE_IDLE = 0,
	40	TPM_TIS_STATE_READY,
	41	TPM_TIS_STATE_COMPLETION,
	42	TPM_TIS_STATE_EXECUTION,
	43	TPM_TIS_STATE_RECEPTION,
	44	} TPMTISState;
	45
	46	/* locality data -- all fields are persisted */
	47	typedef struct TPMLocality {
	48	TPMTISState state;
	49	uint8_t access;
	50	uint8_t sts;
	51	uint32_t inte;
	52	uint32_t ints;
	53
	54	uint16_t w_offset;
	55	uint16_t r_offset;
	56	TPMSizedBuffer w_buffer;
	57	TPMSizedBuffer r_buffer;
	58	} TPMLocality;
	59
	60	typedef struct TPMTISEmuState {
	61	QEMUBH *bh;
	62	uint32_t offset;
	63	uint8_t buf[TPM_TIS_BUFFER_MAX];
	64
	65	uint8_t active_locty;
	66	uint8_t aborting_locty;
	67	uint8_t next_locty;
	68
	69	TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
	70
	71	qemu_irq irq;
	72	uint32_t irq_num;
	73	} TPMTISEmuState;
	74
	75	#endif /* TPM_TPM_TIS_H */