xen-os.h revision 315676 
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: stable/10/sys/xen/xen-os.h 315676 2017-03-21 09:38:59Z royger $
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. */
51void force_evtchn_callback(void);
52
53extern shared_info_t *HYPERVISOR_shared_info;
54
55#ifdef XENHVM
56extern int xen_disable_pv_disks;
57extern int xen_disable_pv_nics;
58#endif
59
60extern bool xen_suspend_cancelled;
61
62enum xen_domain_type {
63	XEN_NATIVE,             /* running on bare hardware    */
64	XEN_PV_DOMAIN,          /* running in a PV domain      */
65	XEN_HVM_DOMAIN,         /* running in a Xen hvm domain */
66};
67
68extern enum xen_domain_type xen_domain_type;
69
70static inline int
71xen_domain(void)
72{
73	return (xen_domain_type != XEN_NATIVE);
74}
75
76static inline int
77xen_pv_domain(void)
78{
79	return (xen_domain_type == XEN_PV_DOMAIN);
80}
81
82static inline int
83xen_hvm_domain(void)
84{
85	return (xen_domain_type == XEN_HVM_DOMAIN);
86}
87
88#ifndef xen_mb
89#define xen_mb() mb()
90#endif
91#ifndef xen_rmb
92#define xen_rmb() rmb()
93#endif
94#ifndef xen_wmb
95#define xen_wmb() wmb()
96#endif
97
98#endif /* !__ASSEMBLY__ */
99
100#endif /* _XEN_XEN_OS_H_ */
101