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 void 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 #define TPM_IF_CLASS(klass) \ 30 OBJECT_CLASS_CHECK(TPMIfClass, (klass), TYPE_TPM_IF) 31 #define TPM_IF_GET_CLASS(obj) \ 32 OBJECT_GET_CLASS(TPMIfClass, (obj), TYPE_TPM_IF) 33 #define TPM_IF(obj) \ 34 INTERFACE_CHECK(TPMIf, (obj), TYPE_TPM_IF) 35 36 typedef struct TPMIf TPMIf; 37 38 typedef struct TPMIfClass { 39 InterfaceClass parent_class; 40 41 enum TpmModel model; 42 void (*request_completed)(TPMIf *obj, int ret); 43 enum TPMVersion (*get_version)(TPMIf *obj); 44 } TPMIfClass; 45 46 #define TYPE_TPM_TIS "tpm-tis" 47 #define TYPE_TPM_CRB "tpm-crb" 48 49 #define TPM_IS_TIS(chr) \ 50 object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS) 51 #define TPM_IS_CRB(chr) \ 52 object_dynamic_cast(OBJECT(chr), TYPE_TPM_CRB) 53 54 /* returns NULL unless there is exactly one TPM device */ 55 static inline TPMIf *tpm_find(void) 56 { 57 Object *obj = object_resolve_path_type("", TYPE_TPM_IF, NULL); 58 59 return TPM_IF(obj); 60 } 61 62 static inline TPMVersion tpm_get_version(TPMIf *ti) 63 { 64 if (!ti) { 65 return TPM_VERSION_UNSPEC; 66 } 67 68 return TPM_IF_GET_CLASS(ti)->get_version(ti); 69 } 70 71 #endif /* QEMU_TPM_H */ 72