92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
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/*
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* tpm_tis.h - QEMU's TPM TIS common header
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*
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* Copyright (C) 2006,2010-2013 IBM Corporation
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*
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* Authors:
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* Stefan Berger <stefanb@us.ibm.com>
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* David Safford <safford@us.ibm.com>
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*
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* Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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* Implementation of the TIS interface according to specs found at
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* http://www.trustedcomputinggroup.org. This implementation currently
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* supports version 1.3, 21 March 2013
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* In the developers menu choose the PC Client section then find the TIS
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* specification.
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*
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* TPM TIS for TPM 2 implementation following TCG PC Client Platform
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* TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43
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*/
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#ifndef TPM_TPM_TIS_H
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#define TPM_TPM_TIS_H
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#include "qemu/osdep.h"
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#include "sysemu/tpm_backend.h"
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#include "tpm_ppi.h"
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#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
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#define TPM_TIS_LOCALITY_SHIFT 12
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#define TPM_TIS_NO_LOCALITY 0xff
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#define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES)
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#define TPM_TIS_BUFFER_MAX 4096
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typedef enum {
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TPM_TIS_STATE_IDLE = 0,
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TPM_TIS_STATE_READY,
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TPM_TIS_STATE_COMPLETION,
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TPM_TIS_STATE_EXECUTION,
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TPM_TIS_STATE_RECEPTION,
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} TPMTISState;
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/* locality data -- all fields are persisted */
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typedef struct TPMLocality {
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TPMTISState state;
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uint8_t access;
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uint32_t sts;
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uint32_t iface_id;
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uint32_t inte;
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uint32_t ints;
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} TPMLocality;
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typedef struct TPMState {
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MemoryRegion mmio;
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unsigned char buffer[TPM_TIS_BUFFER_MAX];
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uint16_t rw_offset;
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uint8_t active_locty;
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uint8_t aborting_locty;
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uint8_t next_locty;
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TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
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qemu_irq irq;
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uint32_t irq_num;
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TPMBackendCmd cmd;
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TPMBackend *be_driver;
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TPMVersion be_tpm_version;
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size_t be_buffer_size;
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bool ppi_enabled;
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TPMPPI ppi;
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} TPMState;
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extern const VMStateDescription vmstate_locty;
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extern const MemoryRegionOps tpm_tis_memory_ops;
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int tpm_tis_pre_save(TPMState *s);
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void tpm_tis_reset(TPMState *s);
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enum TPMVersion tpm_tis_get_tpm_version(TPMState *s);
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void tpm_tis_request_completed(TPMState *s, int ret);
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#endif /* TPM_TPM_TIS_H */
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