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Commit	Line	Data
	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
	20	#include "hw/isa/isa.h"
	21	#include "hw/acpi/tpm.h"
	22	#include "qemu-common.h"
	23
	24	#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
	25	#define TPM_TIS_LOCALITY_SHIFT 12
	26	#define TPM_TIS_NO_LOCALITY 0xff
	27
	28	#define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES)
	29
	30	#define TPM_TIS_BUFFER_MAX 4096
	31
	32	typedef enum {
	33	TPM_TIS_STATE_IDLE = 0,
	34	TPM_TIS_STATE_READY,
	35	TPM_TIS_STATE_COMPLETION,
	36	TPM_TIS_STATE_EXECUTION,
	37	TPM_TIS_STATE_RECEPTION,
	38	} TPMTISState;
	39
	40	/* locality data -- all fields are persisted */
	41	typedef struct TPMLocality {
	42	TPMTISState state;
	43	uint8_t access;
	44	uint32_t sts;
	45	uint32_t inte;
	46	uint32_t ints;
	47
	48	uint16_t w_offset;
	49	uint16_t r_offset;
	50	TPMSizedBuffer w_buffer;
	51	TPMSizedBuffer r_buffer;
	52	} TPMLocality;
	53
	54	typedef struct TPMTISEmuState {
	55	QEMUBH *bh;
	56	uint32_t offset;
	57	uint8_t buf[TPM_TIS_BUFFER_MAX];
	58
	59	uint8_t active_locty;
	60	uint8_t aborting_locty;
	61	uint8_t next_locty;
	62
	63	TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
	64
	65	qemu_irq irq;
	66	uint32_t irq_num;
	67	} TPMTISEmuState;
	68
	69	#endif /* TPM_TPM_TIS_H */