cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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tpm_tis.h (2290B)

      1/*
      2 * tpm_tis.h - QEMU's TPM TIS common header
      3 *
      4 * Copyright (C) 2006,2010-2013 IBM Corporation
      5 *
      6 * Authors:
      7 *  Stefan Berger <stefanb@us.ibm.com>
      8 *  David Safford <safford@us.ibm.com>
      9 *
     10 * Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
     11 *
     12 * This work is licensed under the terms of the GNU GPL, version 2 or later.
     13 * See the COPYING file in the top-level directory.
     14 *
     15 * Implementation of the TIS interface according to specs found at
     16 * http://www.trustedcomputinggroup.org. This implementation currently
     17 * supports version 1.3, 21 March 2013
     18 * In the developers menu choose the PC Client section then find the TIS
     19 * specification.
     20 *
     21 * TPM TIS for TPM 2 implementation following TCG PC Client Platform
     22 * TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43
     23 */
     24#ifndef TPM_TPM_TIS_H
     25#define TPM_TPM_TIS_H
     26
     27#include "sysemu/tpm_backend.h"
     28#include "tpm_ppi.h"
     29
     30#define TPM_TIS_NUM_LOCALITIES      5     /* per spec */
     31#define TPM_TIS_LOCALITY_SHIFT      12
     32#define TPM_TIS_NO_LOCALITY         0xff
     33
     34#define TPM_TIS_IS_VALID_LOCTY(x)   ((x) < TPM_TIS_NUM_LOCALITIES)
     35
     36#define TPM_TIS_BUFFER_MAX          4096
     37
     38typedef 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 */
     47typedef struct TPMLocality {
     48    TPMTISState state;
     49    uint8_t access;
     50    uint32_t sts;
     51    uint32_t iface_id;
     52    uint32_t inte;
     53    uint32_t ints;
     54} TPMLocality;
     55
     56typedef struct TPMState {
     57    MemoryRegion mmio;
     58
     59    unsigned char buffer[TPM_TIS_BUFFER_MAX];
     60    uint16_t rw_offset;
     61
     62    uint8_t active_locty;
     63    uint8_t aborting_locty;
     64    uint8_t next_locty;
     65
     66    TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
     67
     68    qemu_irq irq;
     69    uint32_t irq_num;
     70
     71    TPMBackendCmd cmd;
     72
     73    TPMBackend *be_driver;
     74    TPMVersion be_tpm_version;
     75
     76    size_t be_buffer_size;
     77
     78    bool ppi_enabled;
     79    TPMPPI ppi;
     80} TPMState;
     81
     82extern const VMStateDescription vmstate_locty;
     83extern const MemoryRegionOps tpm_tis_memory_ops;
     84
     85int tpm_tis_pre_save(TPMState *s);
     86void tpm_tis_reset(TPMState *s);
     87enum TPMVersion tpm_tis_get_tpm_version(TPMState *s);
     88void tpm_tis_request_completed(TPMState *s, int ret);
     89
     90#endif /* TPM_TPM_TIS_H */