5086bf9784
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
95 lines
2 KiB
C
95 lines
2 KiB
C
/*
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* tpm_tis.h - QEMU's TPM TIS interface emulator
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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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* 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
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*
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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 "hw/isa/isa.h"
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#include "hw/acpi/tpm.h"
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#include "qemu-common.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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typedef struct TPMSizedBuffer {
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uint32_t size;
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uint8_t *buffer;
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} TPMSizedBuffer;
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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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uint16_t w_offset;
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uint16_t r_offset;
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TPMSizedBuffer w_buffer;
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TPMSizedBuffer r_buffer;
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} TPMLocality;
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typedef struct TPMTISEmuState {
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QEMUBH *bh;
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uint32_t offset;
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uint8_t buf[TPM_TIS_BUFFER_MAX];
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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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} TPMTISEmuState;
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/* overall state of the TPM interface */
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struct TPMState {
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ISADevice busdev;
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MemoryRegion mmio;
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union {
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TPMTISEmuState tis;
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} s;
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uint8_t locty_number;
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TPMBackendCmd cmd;
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char *backend;
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TPMBackend *be_driver;
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TPMVersion be_tpm_version;
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};
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#define TPM(obj) OBJECT_CHECK(TPMState, (obj), TYPE_TPM_TIS)
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#endif /* TPM_TPM_TIS_H */
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