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42 lines
1.6 KiB
C
42 lines
1.6 KiB
C
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/*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Copyright (C) IBM Corp. 2006
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*/
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#ifndef _XEN_XENCOMM_H_
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#define _XEN_XENCOMM_H_
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/* A xencomm descriptor is a scatter/gather list containing physical
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* addresses corresponding to a virtually contiguous memory area. The
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* hypervisor translates these physical addresses to machine addresses to copy
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* to and from the virtually contiguous area.
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*/
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#define XENCOMM_MAGIC 0x58434F4D /* 'XCOM' */
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#define XENCOMM_INVALID (~0UL)
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struct xencomm_desc {
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uint32_t magic;
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uint32_t nr_addrs; /* the number of entries in address[] */
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uint64_t address[0];
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};
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#endif /* _XEN_XENCOMM_H_ */
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