1181624Skmacy/* 2181624Skmacy * Permission is hereby granted, free of charge, to any person obtaining a copy 3181624Skmacy * of this software and associated documentation files (the "Software"), to 4181624Skmacy * deal in the Software without restriction, including without limitation the 5181624Skmacy * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 6181624Skmacy * sell copies of the Software, and to permit persons to whom the Software is 7181624Skmacy * furnished to do so, subject to the following conditions: 8181624Skmacy * 9181624Skmacy * The above copyright notice and this permission notice shall be included in 10181624Skmacy * all copies or substantial portions of the Software. 11181624Skmacy * 12181624Skmacy * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 13181624Skmacy * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14181624Skmacy * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 15181624Skmacy * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 16181624Skmacy * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 17181624Skmacy * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 18181624Skmacy * DEALINGS IN THE SOFTWARE. 19181624Skmacy * 20181624Skmacy * Copyright (C) IBM Corp. 2006 21181624Skmacy */ 22181624Skmacy 23181624Skmacy#ifndef _XEN_XENCOMM_H_ 24181624Skmacy#define _XEN_XENCOMM_H_ 25181624Skmacy 26181624Skmacy/* A xencomm descriptor is a scatter/gather list containing physical 27181624Skmacy * addresses corresponding to a virtually contiguous memory area. The 28181624Skmacy * hypervisor translates these physical addresses to machine addresses to copy 29181624Skmacy * to and from the virtually contiguous area. 30181624Skmacy */ 31181624Skmacy 32181624Skmacy#define XENCOMM_MAGIC 0x58434F4D /* 'XCOM' */ 33181624Skmacy#define XENCOMM_INVALID (~0UL) 34181624Skmacy 35181624Skmacystruct xencomm_desc { 36181624Skmacy uint32_t magic; 37181624Skmacy uint32_t nr_addrs; /* the number of entries in address[] */ 38181624Skmacy uint64_t address[0]; 39181624Skmacy}; 40181624Skmacy 41181624Skmacy#endif /* _XEN_XENCOMM_H_ */ 42