/* * tpm_tis.h - QEMU's TPM TIS common header * * Copyright (C) 2006,2010-2013 IBM Corporation * * Authors: * Stefan Berger <stefanb@us.ibm.com> * David Safford <safford@us.ibm.com> * * Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at> * * 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. This implementation currently * supports version 1.3, 21 March 2013 * In the developers menu choose the PC Client section then find the TIS * specification. * * TPM TIS for TPM 2 implementation following TCG PC Client Platform * TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43 */ #ifndef TPM_TPM_TIS_H #define TPM_TPM_TIS_H #include "qemu/osdep.h" #include "sysemu/tpm_backend.h" #include "tpm_ppi.h" #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_BUFFER_MAX 4096 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; uint32_t sts; uint32_t iface_id; uint32_t inte; uint32_t ints; } TPMLocality; typedef struct TPMState { MemoryRegion mmio; unsigned char buffer[TPM_TIS_BUFFER_MAX]; uint16_t rw_offset; 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; TPMBackendCmd cmd; TPMBackend *be_driver; TPMVersion be_tpm_version; size_t be_buffer_size; bool ppi_enabled; TPMPPI ppi; } TPMState; extern const VMStateDescription vmstate_locty; extern const MemoryRegionOps tpm_tis_memory_ops; int tpm_tis_pre_save(TPMState *s); void tpm_tis_reset(TPMState *s); enum TPMVersion tpm_tis_get_tpm_version(TPMState *s); void tpm_tis_request_completed(TPMState *s, int ret); #endif /* TPM_TPM_TIS_H */