1 /*
2  * Copyright (C) 2008, VMware, Inc.
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful, but
10  * WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
12  * NON INFRINGEMENT.  See the GNU General Public License for more
13  * details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  */
20 #ifndef _ASM_X86_HYPERVISOR_H
21 #define _ASM_X86_HYPERVISOR_H
22 
23 /* x86 hypervisor types  */
24 enum x86_hypervisor_type {
25 	X86_HYPER_NATIVE = 0,
26 	X86_HYPER_VMWARE,
27 	X86_HYPER_MS_HYPERV,
28 	X86_HYPER_XEN_PV,
29 	X86_HYPER_XEN_HVM,
30 	X86_HYPER_KVM,
31 	X86_HYPER_JAILHOUSE,
32 	X86_HYPER_ACRN,
33 };
34 
35 #ifdef CONFIG_HYPERVISOR_GUEST
36 
37 #include <asm/kvm_para.h>
38 #include <asm/x86_init.h>
39 #include <asm/xen/hypervisor.h>
40 
41 struct hypervisor_x86 {
42 	/* Hypervisor name */
43 	const char	*name;
44 
45 	/* Detection routine */
46 	uint32_t	(*detect)(void);
47 
48 	/* Hypervisor type */
49 	enum x86_hypervisor_type type;
50 
51 	/* init time callbacks */
52 	struct x86_hyper_init init;
53 
54 	/* runtime callbacks */
55 	struct x86_hyper_runtime runtime;
56 
57 	/* ignore nopv parameter */
58 	bool ignore_nopv;
59 };
60 
61 extern const struct hypervisor_x86 x86_hyper_vmware;
62 extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
63 extern const struct hypervisor_x86 x86_hyper_xen_pv;
64 extern const struct hypervisor_x86 x86_hyper_kvm;
65 extern const struct hypervisor_x86 x86_hyper_jailhouse;
66 extern const struct hypervisor_x86 x86_hyper_acrn;
67 extern struct hypervisor_x86 x86_hyper_xen_hvm;
68 
69 extern bool nopv;
70 extern enum x86_hypervisor_type x86_hyper_type;
71 extern void init_hypervisor_platform(void);
hypervisor_is_type(enum x86_hypervisor_type type)72 static inline bool hypervisor_is_type(enum x86_hypervisor_type type)
73 {
74 	return x86_hyper_type == type;
75 }
76 #else
init_hypervisor_platform(void)77 static inline void init_hypervisor_platform(void) { }
hypervisor_is_type(enum x86_hypervisor_type type)78 static inline bool hypervisor_is_type(enum x86_hypervisor_type type)
79 {
80 	return type == X86_HYPER_NATIVE;
81 }
82 #endif /* CONFIG_HYPERVISOR_GUEST */
83 #endif /* _ASM_X86_HYPERVISOR_H */
84