1 /******************************************************************************
4 * TPM I/O interface for Xen guest OSes.
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 * Copyright (c) 2005, IBM Corporation
26 * Author: Stefan Berger, stefanb@us.ibm.com
27 * Grant table support: Mahadevan Gomathisankaran
29 * This code has been derived from tools/libxc/xen/io/netif.h
31 * Copyright (c) 2003-2004, Keir Fraser
34 #ifndef __XEN_PUBLIC_IO_TPMIF_H__
35 #define __XEN_PUBLIC_IO_TPMIF_H__
37 #include "../grant_table.h"
39 struct tpmif_tx_request {
40 unsigned long addr; /* Machine address of packet. */
41 grant_ref_t ref; /* grant table access reference */
43 uint16_t size; /* Packet size in bytes. */
45 typedef struct tpmif_tx_request tpmif_tx_request_t;
48 * The TPMIF_TX_RING_SIZE defines the number of pages the
49 * front-end and backend can exchange (= size of array).
51 typedef uint32_t TPMIF_RING_IDX;
53 #define TPMIF_TX_RING_SIZE 1
55 /* This structure must fit in a memory page. */
58 struct tpmif_tx_request req;
60 typedef struct tpmif_ring tpmif_ring_t;
62 struct tpmif_tx_interface {
63 struct tpmif_ring ring[TPMIF_TX_RING_SIZE];
65 typedef struct tpmif_tx_interface tpmif_tx_interface_t;
75 * indent-tabs-mode: nil