1*a215bf01Scherry /* 2*a215bf01Scherry * Permission is hereby granted, free of charge, to any person obtaining a copy 3*a215bf01Scherry * of this software and associated documentation files (the "Software"), to 4*a215bf01Scherry * deal in the Software without restriction, including without limitation the 5*a215bf01Scherry * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 6*a215bf01Scherry * sell copies of the Software, and to permit persons to whom the Software is 7*a215bf01Scherry * furnished to do so, subject to the following conditions: 8*a215bf01Scherry * 9*a215bf01Scherry * The above copyright notice and this permission notice shall be included in 10*a215bf01Scherry * all copies or substantial portions of the Software. 11*a215bf01Scherry * 12*a215bf01Scherry * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 13*a215bf01Scherry * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14*a215bf01Scherry * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 15*a215bf01Scherry * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 16*a215bf01Scherry * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 17*a215bf01Scherry * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 18*a215bf01Scherry * DEALINGS IN THE SOFTWARE. 19*a215bf01Scherry * 20*a215bf01Scherry * Copyright (C) IBM Corp. 2006 21*a215bf01Scherry */ 22*a215bf01Scherry 23*a215bf01Scherry #ifndef _XEN_XENCOMM_H_ 24*a215bf01Scherry #define _XEN_XENCOMM_H_ 25*a215bf01Scherry 26*a215bf01Scherry /* A xencomm descriptor is a scatter/gather list containing physical 27*a215bf01Scherry * addresses corresponding to a virtually contiguous memory area. The 28*a215bf01Scherry * hypervisor translates these physical addresses to machine addresses to copy 29*a215bf01Scherry * to and from the virtually contiguous area. 30*a215bf01Scherry */ 31*a215bf01Scherry 32*a215bf01Scherry #define XENCOMM_MAGIC 0x58434F4D /* 'XCOM' */ 33*a215bf01Scherry #define XENCOMM_INVALID (~0UL) 34*a215bf01Scherry 35*a215bf01Scherry struct xencomm_desc { 36*a215bf01Scherry uint32_t magic; 37*a215bf01Scherry uint32_t nr_addrs; /* the number of entries in address[] */ 38*a215bf01Scherry uint64_t address[0]; 39*a215bf01Scherry }; 40*a215bf01Scherry 41*a215bf01Scherry #endif /* _XEN_XENCOMM_H_ */ 42