FreeBSD/Linux Kernel Cross Reference
sys/xen/xen-os.h
1 /******************************************************************************
2 * xen/xen-os.h
3 *
4 * Random collection of macros and definition
5 *
6 * Copyright (c) 2003, 2004 Keir Fraser (on behalf of the Xen team)
7 * All rights reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to
11 * deal in the Software without restriction, including without limitation the
12 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
13 * sell copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
26 *
27 * $FreeBSD: releng/10.1/sys/xen/xen-os.h 256747 2013-10-18 17:08:23Z dim $
28 */
29
30 #ifndef _XEN_XEN_OS_H_
31 #define _XEN_XEN_OS_H_
32
33 #if !defined(__XEN_INTERFACE_VERSION__)
34 #define __XEN_INTERFACE_VERSION__ 0x00030208
35 #endif
36
37 #define GRANT_REF_INVALID 0xffffffff
38
39 #ifdef LOCORE
40 #define __ASSEMBLY__
41 #endif
42
43 #include <machine/xen/xen-os.h>
44
45 #include <xen/interface/xen.h>
46
47 /* Everything below this point is not included by assembler (.S) files. */
48 #ifndef __ASSEMBLY__
49
50 /* Force a proper event-channel callback from Xen. */
51 void force_evtchn_callback(void);
52
53 extern shared_info_t *HYPERVISOR_shared_info;
54
55 enum xen_domain_type {
56 XEN_NATIVE, /* running on bare hardware */
57 XEN_PV_DOMAIN, /* running in a PV domain */
58 XEN_HVM_DOMAIN, /* running in a Xen hvm domain */
59 };
60
61 extern enum xen_domain_type xen_domain_type;
62
63 static inline int
64 xen_domain(void)
65 {
66 return (xen_domain_type != XEN_NATIVE);
67 }
68
69 static inline int
70 xen_pv_domain(void)
71 {
72 return (xen_domain_type == XEN_PV_DOMAIN);
73 }
74
75 static inline int
76 xen_hvm_domain(void)
77 {
78 return (xen_domain_type == XEN_HVM_DOMAIN);
79 }
80
81 #ifndef xen_mb
82 #define xen_mb() mb()
83 #endif
84 #ifndef xen_rmb
85 #define xen_rmb() rmb()
86 #endif
87 #ifndef xen_wmb
88 #define xen_wmb() wmb()
89 #endif
90
91 #endif /* !__ASSEMBLY__ */
92
93 #endif /* _XEN_XEN_OS_H_ */
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