sys/arch/xen/include/xen3-public/io/tpmif.h

   1 /* $NetBSD: tpmif.h,v 1.3.28.1 2007/10/03 19:26:11 garbled Exp $ */
   2 /******************************************************************************
   3  * tpmif.h
   4  *
   5  * TPM I/O interface for Xen guest OSes.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to
   9  * deal in the Software without restriction, including without limitation the
  10  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  11  * sell copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Copyright (c) 2005, IBM Corporation
  26  *
  27  * Author: Stefan Berger, stefanb@us.ibm.com
  28  * Grant table support: Mahadevan Gomathisankaran
  29  *
  30  * This code has been derived from tools/libxc/xen/io/netif.h
  31  *
  32  * Copyright (c) 2003-2004, Keir Fraser
  33  */
  34
  35 #ifndef __XEN_PUBLIC_IO_TPMIF_H__
  36 #define __XEN_PUBLIC_IO_TPMIF_H__
  37
  38 #include "../grant_table.h"
  39
  40 struct tpmif_tx_request {
  41     unsigned long addr;   /* Machine address of packet.   */
  42     grant_ref_t ref;      /* grant table access reference */
  43     uint16_t unused;
  44     uint16_t size;        /* Packet size in bytes.        */
  45 };
  46 typedef struct tpmif_tx_request tpmif_tx_request_t;
  47
  48 /*
  49  * The TPMIF_TX_RING_SIZE defines the number of pages the
  50  * front-end and backend can exchange (= size of array).
  51  */
  52 typedef uint32_t TPMIF_RING_IDX;
  53
  54 #define TPMIF_TX_RING_SIZE 1
  55
  56 /* This structure must fit in a memory page. */
  57
  58 struct tpmif_ring {
  59     struct tpmif_tx_request req;
  60 };
  61 typedef struct tpmif_ring tpmif_ring_t;
  62
  63 struct tpmif_tx_interface {
  64     struct tpmif_ring ring[TPMIF_TX_RING_SIZE];
  65 };
  66 typedef struct tpmif_tx_interface tpmif_tx_interface_t;
  67
  68 #endif
  69
  70 /*
  71  * Local variables:
  72  * mode: C
  73  * c-set-style: "BSD"
  74  * c-basic-offset: 4
  75  * tab-width: 4
  76  * indent-tabs-mode: nil
  77  * End:
  78  */