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 #ifdef CONFIG_TPM 19 20 int tpm_config_parse(QemuOptsList *opts_list, const char *optarg); 21 int tpm_init(void); 22 void tpm_cleanup(void); 23 24 typedef enum TPMVersion { 25 TPM_VERSION_UNSPEC = 0, 26 TPM_VERSION_1_2 = 1, 27 TPM_VERSION_2_0 = 2, 28 } TPMVersion; 29 30 #define TYPE_TPM_IF "tpm-if" 31 typedef struct TPMIfClass TPMIfClass; 32 DECLARE_CLASS_CHECKERS(TPMIfClass, TPM_IF, 33 TYPE_TPM_IF) 34 #define TPM_IF(obj) \ 35 INTERFACE_CHECK(TPMIf, (obj), TYPE_TPM_IF) 36 37 typedef struct TPMIf TPMIf; 38 39 struct TPMIfClass { 40 InterfaceClass parent_class; 41 42 enum TpmModel model; 43 void (*request_completed)(TPMIf *obj, int ret); 44 enum TPMVersion (*get_version)(TPMIf *obj); 45 }; 46 47 #define TYPE_TPM_TIS_ISA "tpm-tis" 48 #define TYPE_TPM_TIS_SYSBUS "tpm-tis-device" 49 #define TYPE_TPM_CRB "tpm-crb" 50 #define TYPE_TPM_SPAPR "tpm-spapr" 51 52 #define TPM_IS_TIS_ISA(chr) \ 53 object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS_ISA) 54 #define TPM_IS_TIS_SYSBUS(chr) \ 55 object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS_SYSBUS) 56 #define TPM_IS_CRB(chr) \ 57 object_dynamic_cast(OBJECT(chr), TYPE_TPM_CRB) 58 #define TPM_IS_SPAPR(chr) \ 59 object_dynamic_cast(OBJECT(chr), TYPE_TPM_SPAPR) 60 61 /* returns NULL unless there is exactly one TPM device */ 62 static inline TPMIf *tpm_find(void) 63 { 64 Object *obj = object_resolve_path_type("", TYPE_TPM_IF, NULL); 65 66 return TPM_IF(obj); 67 } 68 69 static inline TPMVersion tpm_get_version(TPMIf *ti) 70 { 71 if (!ti) { 72 return TPM_VERSION_UNSPEC; 73 } 74 75 return TPM_IF_GET_CLASS(ti)->get_version(ti); 76 } 77 78 #else /* CONFIG_TPM */ 79 80 #define tpm_init() (0) 81 #define tpm_cleanup() 82 83 /* needed for an alignment check in non-tpm code */ 84 static inline Object *TPM_IS_CRB(Object *obj) 85 { 86 return NULL; 87 } 88 89 #endif /* CONFIG_TPM */ 90 91 #endif /* QEMU_TPM_H */ 92