1 /* $NetBSD: tpmvar.h,v 1.7 2019/10/09 14:03:58 maxv Exp $ */ 2 3 /* 4 * Copyright (c) 2019 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Maxime Villard. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #define TPM_API_VERSION 1 33 34 enum tpm_version { 35 TPM_1_2, 36 TPM_2_0 37 }; 38 39 enum itf_version { 40 TIS_1_2, 41 CRB 42 }; 43 44 struct tpm_ioc_getinfo { 45 uint32_t api_version; 46 uint32_t tpm_version; 47 uint32_t itf_version; 48 uint32_t device_id; 49 uint32_t device_rev; 50 uint32_t device_caps; 51 }; 52 53 #define TPM_IOC_GETINFO _IOR ('N', 0, struct tpm_ioc_getinfo) 54 55 #ifdef _KERNEL 56 57 struct tpm_softc; 58 59 struct tpm_intf { 60 enum itf_version version; 61 int (*probe)(bus_space_tag_t, bus_space_handle_t); 62 int (*init)(struct tpm_softc *); 63 int (*start)(struct tpm_softc *, int); 64 int (*read)(struct tpm_softc *, void *, size_t, size_t *, int); 65 int (*write)(struct tpm_softc *, const void *, size_t); 66 int (*end)(struct tpm_softc *, int, int); 67 }; 68 69 extern const struct tpm_intf tpm_intf_tis12; 70 71 struct tpm_softc { 72 device_t sc_dev; 73 enum tpm_version sc_ver; 74 kmutex_t sc_lock; 75 bool sc_busy; 76 77 const struct tpm_intf *sc_intf; 78 bus_space_tag_t sc_bt; 79 bus_space_handle_t sc_bh; 80 81 uint32_t sc_devid; 82 uint32_t sc_rev; 83 uint32_t sc_status; 84 uint32_t sc_caps; 85 }; 86 87 bool tpm_suspend(device_t, const pmf_qual_t *); 88 bool tpm_resume(device_t, const pmf_qual_t *); 89 90 #endif 91