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__
32 /* Commands to HYPERVISOR_tmem_op() */
33 #define TMEM_CONTROL 0
34 #define TMEM_NEW_POOL 1
35 #define TMEM_DESTROY_POOL 2
36 #define TMEM_NEW_PAGE 3
37 #define TMEM_PUT_PAGE 4
38 #define TMEM_GET_PAGE 5
39 #define TMEM_FLUSH_PAGE 6
40 #define TMEM_FLUSH_OBJECT 7
45 /* Privileged commands to HYPERVISOR_tmem_op() */
47 #define TMEM_RESTORE_NEW 102
49 /* Subops for HYPERVISOR_tmem_op(TMEM_CONTROL) */
51 #define TMEMC_FREEZE 1
53 #define TMEMC_DESTROY 3
55 #define TMEMC_SET_WEIGHT 5
56 #define TMEMC_SET_CAP 6
57 #define TMEMC_SET_COMPRESS 7
58 #define TMEMC_QUERY_FREEABLE_MB 8
59 #define TMEMC_SAVE_BEGIN 10
60 #define TMEMC_SAVE_GET_VERSION 11
61 #define TMEMC_SAVE_GET_MAXPOOLS 12
62 #define TMEMC_SAVE_GET_CLIENT_WEIGHT 13
63 #define TMEMC_SAVE_GET_CLIENT_CAP 14
64 #define TMEMC_SAVE_GET_CLIENT_FLAGS 15
65 #define TMEMC_SAVE_GET_POOL_FLAGS 16
66 #define TMEMC_SAVE_GET_POOL_NPAGES 17
67 #define TMEMC_SAVE_GET_POOL_UUID 18
68 #define TMEMC_SAVE_GET_NEXT_PAGE 19
69 #define TMEMC_SAVE_GET_NEXT_INV 20
70 #define TMEMC_SAVE_END 21
71 #define TMEMC_RESTORE_BEGIN 30
72 #define TMEMC_RESTORE_PUT_PAGE 32
73 #define TMEMC_RESTORE_FLUSH_PAGE 33
75 /* Bits for HYPERVISOR_tmem_op(TMEM_NEW_POOL) */
76 #define TMEM_POOL_PERSIST 1
77 #define TMEM_POOL_SHARED 2
78 #define TMEM_POOL_PAGESIZE_SHIFT 4
79 #define TMEM_POOL_PAGESIZE_MASK 0xf
80 #define TMEM_POOL_VERSION_SHIFT 24
81 #define TMEM_POOL_VERSION_MASK 0xff
83 /* Bits for client flags (save/restore) */
84 #define TMEM_CLIENT_COMPRESS 1
85 #define TMEM_CLIENT_FROZEN 2
87 /* Special errno values */
93 typedef xen_pfn_t tmem_cli_mfn_t;
94 typedef XEN_GUEST_HANDLE(char) tmem_cli_va_t;
103 } new; /* for cmd == TMEM_NEW_POOL, TMEM_AUTH, TMEM_RESTORE_NEW */
111 } ctrl; /* for cmd == TMEM_CONTROL */
116 uint32_t tmem_offset;
119 tmem_cli_mfn_t cmfn; /* client machine page frame */
120 } gen; /* for all other cmd ("generic") */
123 typedef struct tmem_op tmem_op_t;
124 DEFINE_XEN_GUEST_HANDLE(tmem_op_t);
134 #endif /* __XEN_PUBLIC_TMEM_H__ */
142 * indent-tabs-mode: nil