1 /******************************************************************************
4 * Guest OS interface to Xen Transcendent Memory.
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to
8 * deal in the Software without restriction, including without limitation the
9 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
10 * sell copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
24 * Copyright (c) 2004, K A Fraser
27 #ifndef __XEN_PUBLIC_TMEM_H__
28 #define __XEN_PUBLIC_TMEM_H__
33 #define TMEM_SPEC_VERSION 1
35 /* Commands to HYPERVISOR_tmem_op() */
37 #define TMEM_CONTROL 0 /* Now called XEN_SYSCTL_tmem_op */
41 #define TMEM_NEW_POOL 1
42 #define TMEM_DESTROY_POOL 2
43 #define TMEM_PUT_PAGE 4
44 #define TMEM_GET_PAGE 5
45 #define TMEM_FLUSH_PAGE 6
46 #define TMEM_FLUSH_OBJECT 7
47 #if __XEN_INTERFACE_VERSION__ < 0x00040400
48 #define TMEM_NEW_PAGE 3
54 /* Privileged commands to HYPERVISOR_tmem_op() */
56 #define TMEM_RESTORE_NEW 102
58 /* Bits for HYPERVISOR_tmem_op(TMEM_NEW_POOL) */
59 #define TMEM_POOL_PERSIST 1
60 #define TMEM_POOL_SHARED 2
61 #define TMEM_POOL_PRECOMPRESSED 4
62 #define TMEM_POOL_PAGESIZE_SHIFT 4
63 #define TMEM_POOL_PAGESIZE_MASK 0xf
64 #define TMEM_POOL_VERSION_SHIFT 24
65 #define TMEM_POOL_VERSION_MASK 0xff
66 #define TMEM_POOL_RESERVED_BITS 0x00ffff00
68 /* Bits for client flags (save/restore) */
69 #define TMEM_CLIENT_COMPRESS 1
70 #define TMEM_CLIENT_FROZEN 2
72 /* Special errno values */
79 typedef struct xen_tmem_oid xen_tmem_oid_t;
80 DEFINE_XEN_GUEST_HANDLE(xen_tmem_oid_t);
83 #if __XEN_INTERFACE_VERSION__ < 0x00040400
84 typedef xen_pfn_t tmem_cli_mfn_t;
86 typedef XEN_GUEST_HANDLE(char) tmem_cli_va_t;
95 } creat; /* for cmd == TMEM_NEW_POOL, TMEM_AUTH, TMEM_RESTORE_NEW */
97 #if __XEN_INTERFACE_VERSION__ < 0x00040600
103 uint32_t tmem_offset;
106 xen_pfn_t cmfn; /* client machine page frame */
107 } gen; /* for all other cmd ("generic") */
110 typedef struct tmem_op tmem_op_t;
111 DEFINE_XEN_GUEST_HANDLE(tmem_op_t);
114 #endif /* __XEN_PUBLIC_TMEM_H__ */
119 * c-file-style: "BSD"
122 * indent-tabs-mode: nil