1/****************************************************************************** 2 * tpmif.h 3 * 4 * TPM I/O interface for Xen guest OSes. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to 8 * deal in the Software without restriction, including without limitation the 9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22 * DEALINGS IN THE SOFTWARE. 23 * 24 * Copyright (c) 2005, IBM Corporation 25 * 26 * Author: Stefan Berger, stefanb@us.ibm.com 27 * Grant table support: Mahadevan Gomathisankaran 28 * 29 * This code has been derived from tools/libxc/xen/io/netif.h 30 * 31 * Copyright (c) 2003-2004, Keir Fraser 32 */ 33 34#ifndef __XEN_PUBLIC_IO_TPMIF_H__ 35#define __XEN_PUBLIC_IO_TPMIF_H__ 36 37#include "../grant_table.h" 38 39struct tpmif_tx_request { 40 unsigned long addr; /* Machine address of packet. */ 41 grant_ref_t ref; /* grant table access reference */ 42 uint16_t unused; 43 uint16_t size; /* Packet size in bytes. */ 44}; 45typedef struct tpmif_tx_request tpmif_tx_request_t; 46 47/* 48 * The TPMIF_TX_RING_SIZE defines the number of pages the 49 * front-end and backend can exchange (= size of array). 50 */ 51typedef uint32_t TPMIF_RING_IDX; 52 53#define TPMIF_TX_RING_SIZE 1 54 55/* This structure must fit in a memory page. */ 56 57struct tpmif_ring { 58 struct tpmif_tx_request req; 59}; 60typedef struct tpmif_ring tpmif_ring_t; 61 62struct tpmif_tx_interface { 63 struct tpmif_ring ring[TPMIF_TX_RING_SIZE]; 64}; 65typedef struct tpmif_tx_interface tpmif_tx_interface_t; 66 67#endif 68 69/* 70 * Local variables: 71 * mode: C 72 * c-set-style: "BSD" 73 * c-basic-offset: 4 74 * tab-width: 4 75 * indent-tabs-mode: nil 76 * End: 77 */ 78