Home | History | Annotate | Line # | Download | only in ic
tpmvar.h revision 1.5 
      1 /*	$NetBSD: tpmvar.h,v 1.5 2019/10/08 18:43:02 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 struct tpm_ioc_getinfo {
     40 	uint32_t api_version;
     41 	uint32_t tpm_version;
     42 	uint32_t device_id;
     43 	uint32_t device_rev;
     44 	uint32_t device_caps;
     45 };
     46 
     47 #define TPM_IOC_GETINFO		_IOR ('N',  0, struct tpm_ioc_getinfo)
     48 
     49 #ifdef _KERNEL
     50 
     51 struct tpm_softc {
     52 	device_t sc_dev;
     53 	enum tpm_version sc_ver;
     54 	kmutex_t sc_lock;
     55 	bool sc_busy;
     56 
     57 	int (*sc_init)(struct tpm_softc *);
     58 	int (*sc_start)(struct tpm_softc *, int);
     59 	int (*sc_read)(struct tpm_softc *, void *, size_t, size_t *, int);
     60 	int (*sc_write)(struct tpm_softc *, const void *, size_t);
     61 	int (*sc_end)(struct tpm_softc *, int, int);
     62 
     63 	bus_space_tag_t sc_bt;
     64 	bus_space_handle_t sc_bh;
     65 
     66 	uint32_t sc_devid;
     67 	uint32_t sc_rev;
     68 	uint32_t sc_status;
     69 	uint32_t sc_caps;
     70 };
     71 
     72 bool tpm12_suspend(device_t, const pmf_qual_t *);
     73 bool tpm12_resume(device_t, const pmf_qual_t *);
     74 
     75 int tpm_tis12_probe(bus_space_tag_t, bus_space_handle_t);
     76 int tpm_tis12_init(struct tpm_softc *);
     77 int tpm_tis12_start(struct tpm_softc *, int);
     78 int tpm_tis12_read(struct tpm_softc *, void *, size_t, size_t *, int);
     79 int tpm_tis12_write(struct tpm_softc *, const void *, size_t);
     80 int tpm_tis12_end(struct tpm_softc *, int, int);
     81 
     82 #endif
     83