1 /* 2 * Public TPM functions 3 * 4 * Copyright (C) 2011-2013 IBM Corporation 5 * 6 * Authors: 7 * Stefan Berger <stefanb@us.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or later. 10 * See the COPYING file in the top-level directory. 11 */ 12 #ifndef QEMU_TPM_H 13 #define QEMU_TPM_H 14 15 #include "qapi/qapi-types-tpm.h" 16 #include "qom/object.h" 17 18 int tpm_config_parse(QemuOptsList *opts_list, const char *optarg); 19 int tpm_init(void); 20 void tpm_cleanup(void); 21 22 typedef enum TPMVersion { 23 TPM_VERSION_UNSPEC = 0, 24 TPM_VERSION_1_2 = 1, 25 TPM_VERSION_2_0 = 2, 26 } TPMVersion; 27 28 #define TYPE_TPM_IF "tpm-if" 29 typedef struct TPMIfClass TPMIfClass; 30 DECLARE_CLASS_CHECKERS(TPMIfClass, TPM_IF, 31 TYPE_TPM_IF) 32 #define TPM_IF(obj) \ 33 INTERFACE_CHECK(TPMIf, (obj), TYPE_TPM_IF) 34 35 typedef struct TPMIf TPMIf; 36 37 struct TPMIfClass { 38 InterfaceClass parent_class; 39 40 enum TpmModel model; 41 void (*request_completed)(TPMIf *obj, int ret); 42 enum TPMVersion (*get_version)(TPMIf *obj); 43 }; 44 45 #define TYPE_TPM_TIS_ISA "tpm-tis" 46 #define TYPE_TPM_TIS_SYSBUS "tpm-tis-device" 47 #define TYPE_TPM_CRB "tpm-crb" 48 #define TYPE_TPM_SPAPR "tpm-spapr" 49 50 #define TPM_IS_TIS_ISA(chr) \ 51 object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS_ISA) 52 #define TPM_IS_TIS_SYSBUS(chr) \ 53 object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS_SYSBUS) 54 #define TPM_IS_CRB(chr) \ 55 object_dynamic_cast(OBJECT(chr), TYPE_TPM_CRB) 56 #define TPM_IS_SPAPR(chr) \ 57 object_dynamic_cast(OBJECT(chr), TYPE_TPM_SPAPR) 58 59 /* returns NULL unless there is exactly one TPM device */ 60 static inline TPMIf *tpm_find(void) 61 { 62 Object *obj = object_resolve_path_type("", TYPE_TPM_IF, NULL); 63 64 return TPM_IF(obj); 65 } 66 67 static inline TPMVersion tpm_get_version(TPMIf *ti) 68 { 69 if (!ti) { 70 return TPM_VERSION_UNSPEC; 71 } 72 73 return TPM_IF_GET_CLASS(ti)->get_version(ti); 74 } 75 76 #endif /* QEMU_TPM_H */ 77