123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
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/******************************************************************************
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* tmem.h
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*
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* Guest OS interface to Xen Transcendent Memory.
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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) 2004, K A Fraser
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*/
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#ifndef __XEN_PUBLIC_TMEM_H__
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#define __XEN_PUBLIC_TMEM_H__
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#include "xen.h"
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#if __XEN_INTERFACE_VERSION__ < 0x00041300
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/* version of ABI */
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#define TMEM_SPEC_VERSION 1
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#define TMEM_NEW_POOL 1
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#define TMEM_DESTROY_POOL 2
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#define TMEM_PUT_PAGE 4
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#define TMEM_GET_PAGE 5
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#define TMEM_FLUSH_PAGE 6
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#define TMEM_FLUSH_OBJECT 7
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#if __XEN_INTERFACE_VERSION__ < 0x00040400
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#define TMEM_NEW_PAGE 3
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#define TMEM_READ 8
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#define TMEM_WRITE 9
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#define TMEM_XCHG 10
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#endif
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/* Privileged commands now called via XEN_SYSCTL_tmem_op. */
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#define TMEM_AUTH 101 /* as XEN_SYSCTL_TMEM_OP_SET_AUTH. */
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#define TMEM_RESTORE_NEW 102 /* as XEN_SYSCTL_TMEM_OP_SET_POOL. */
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/* Bits for HYPERVISOR_tmem_op(TMEM_NEW_POOL) */
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#define TMEM_POOL_PERSIST 1
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#define TMEM_POOL_SHARED 2
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#define TMEM_POOL_PRECOMPRESSED 4
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#define TMEM_POOL_PAGESIZE_SHIFT 4
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#define TMEM_POOL_PAGESIZE_MASK 0xf
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#define TMEM_POOL_VERSION_SHIFT 24
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#define TMEM_POOL_VERSION_MASK 0xff
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#define TMEM_POOL_RESERVED_BITS 0x00ffff00
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/* Bits for client flags (save/restore) */
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#define TMEM_CLIENT_COMPRESS 1
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#define TMEM_CLIENT_FROZEN 2
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/* Special errno values */
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#define EFROZEN 1000
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#define EEMPTY 1001
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struct xen_tmem_oid {
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uint64_t oid[3];
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};
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typedef struct xen_tmem_oid xen_tmem_oid_t;
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DEFINE_XEN_GUEST_HANDLE(xen_tmem_oid_t);
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#ifndef __ASSEMBLY__
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#if __XEN_INTERFACE_VERSION__ < 0x00040400
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typedef xen_pfn_t tmem_cli_mfn_t;
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#endif
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typedef XEN_GUEST_HANDLE(char) tmem_cli_va_t;
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struct tmem_op {
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uint32_t cmd;
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int32_t pool_id;
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union {
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struct {
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uint64_t uuid[2];
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uint32_t flags;
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uint32_t arg1;
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} creat; /* for cmd == TMEM_NEW_POOL. */
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struct {
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#if __XEN_INTERFACE_VERSION__ < 0x00040600
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uint64_t oid[3];
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#else
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xen_tmem_oid_t oid;
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#endif
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uint32_t index;
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uint32_t tmem_offset;
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uint32_t pfn_offset;
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uint32_t len;
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xen_pfn_t cmfn; /* client machine page frame */
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} gen; /* for all other cmd ("generic") */
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} u;
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};
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typedef struct tmem_op tmem_op_t;
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DEFINE_XEN_GUEST_HANDLE(tmem_op_t);
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#endif
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#endif /* __XEN_INTERFACE_VERSION__ < 0x00041300 */
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#endif /* __XEN_PUBLIC_TMEM_H__ */
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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