1181624Skmacy/****************************************************************************** 2181624Skmacy * tpmif.h 3181624Skmacy * 4181624Skmacy * TPM I/O interface for Xen guest OSes. 5181624Skmacy * 6181624Skmacy * Permission is hereby granted, free of charge, to any person obtaining a copy 7181624Skmacy * of this software and associated documentation files (the "Software"), to 8181624Skmacy * deal in the Software without restriction, including without limitation the 9181624Skmacy * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10181624Skmacy * sell copies of the Software, and to permit persons to whom the Software is 11181624Skmacy * furnished to do so, subject to the following conditions: 12181624Skmacy * 13181624Skmacy * The above copyright notice and this permission notice shall be included in 14181624Skmacy * all copies or substantial portions of the Software. 15181624Skmacy * 16181624Skmacy * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17181624Skmacy * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18181624Skmacy * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19181624Skmacy * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20181624Skmacy * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21181624Skmacy * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22181624Skmacy * DEALINGS IN THE SOFTWARE. 23181624Skmacy * 24181624Skmacy * Copyright (c) 2005, IBM Corporation 25181624Skmacy * 26181624Skmacy * Author: Stefan Berger, stefanb@us.ibm.com 27181624Skmacy * Grant table support: Mahadevan Gomathisankaran 28181624Skmacy * 29181624Skmacy * This code has been derived from tools/libxc/xen/io/netif.h 30181624Skmacy * 31181624Skmacy * Copyright (c) 2003-2004, Keir Fraser 32181624Skmacy */ 33181624Skmacy 34181624Skmacy#ifndef __XEN_PUBLIC_IO_TPMIF_H__ 35181624Skmacy#define __XEN_PUBLIC_IO_TPMIF_H__ 36181624Skmacy 37181624Skmacy#include "../grant_table.h" 38181624Skmacy 39181624Skmacystruct tpmif_tx_request { 40181624Skmacy unsigned long addr; /* Machine address of packet. */ 41181624Skmacy grant_ref_t ref; /* grant table access reference */ 42181624Skmacy uint16_t unused; 43181624Skmacy uint16_t size; /* Packet size in bytes. */ 44181624Skmacy}; 45181624Skmacytypedef struct tpmif_tx_request tpmif_tx_request_t; 46181624Skmacy 47181624Skmacy/* 48181624Skmacy * The TPMIF_TX_RING_SIZE defines the number of pages the 49181624Skmacy * front-end and backend can exchange (= size of array). 50181624Skmacy */ 51181624Skmacytypedef uint32_t TPMIF_RING_IDX; 52181624Skmacy 53181624Skmacy#define TPMIF_TX_RING_SIZE 1 54181624Skmacy 55181624Skmacy/* This structure must fit in a memory page. */ 56181624Skmacy 57181624Skmacystruct tpmif_ring { 58181624Skmacy struct tpmif_tx_request req; 59181624Skmacy}; 60181624Skmacytypedef struct tpmif_ring tpmif_ring_t; 61181624Skmacy 62181624Skmacystruct tpmif_tx_interface { 63181624Skmacy struct tpmif_ring ring[TPMIF_TX_RING_SIZE]; 64181624Skmacy}; 65181624Skmacytypedef struct tpmif_tx_interface tpmif_tx_interface_t; 66181624Skmacy 67181624Skmacy#endif 68181624Skmacy 69181624Skmacy/* 70181624Skmacy * Local variables: 71181624Skmacy * mode: C 72181624Skmacy * c-set-style: "BSD" 73181624Skmacy * c-basic-offset: 4 74181624Skmacy * tab-width: 4 75181624Skmacy * indent-tabs-mode: nil 76181624Skmacy * End: 77181624Skmacy */ 78