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Alok Kataria88b094f2008-10-27 10:41:46 -07001/*
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 */
H. Peter Anvine08cae42010-05-07 16:57:28 -070020#ifndef _ASM_X86_HYPERVISOR_H
21#define _ASM_X86_HYPERVISOR_H
Alok Kataria88b094f2008-10-27 10:41:46 -070022
Borislav Petkov6276a072013-03-04 21:20:21 +010023#ifdef CONFIG_HYPERVISOR_GUEST
24
Sheng Yang2904ed82010-12-21 14:18:48 +080025#include <asm/kvm_para.h>
Sheng Yangd9b8ca82010-12-21 14:18:49 +080026#include <asm/xen/hypervisor.h>
Sheng Yang2904ed82010-12-21 14:18:48 +080027
H. Peter Anvine08cae42010-05-07 16:57:28 -070028/*
29 * x86 hypervisor information
30 */
31struct hypervisor_x86 {
32 /* Hypervisor name */
33 const char *name;
34
35 /* Detection routine */
Jason Wang9df56f12013-07-25 16:54:35 +080036 uint32_t (*detect)(void);
H. Peter Anvine08cae42010-05-07 16:57:28 -070037
38 /* Adjust CPU feature bits (run once per CPU) */
39 void (*set_cpu_features)(struct cpuinfo_x86 *);
40
41 /* Platform setup (run once per boot) */
42 void (*init_platform)(void);
Alok N Kataria4cca6ea2013-01-17 15:44:42 -080043
44 /* X2APIC detection (run once per boot) */
45 bool (*x2apic_available)(void);
H. Peter Anvine08cae42010-05-07 16:57:28 -070046};
47
48extern const struct hypervisor_x86 *x86_hyper;
49
50/* Recognized hypervisors */
51extern const struct hypervisor_x86 x86_hyper_vmware;
52extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
Boris Ostrovskya71dbda2015-05-04 11:02:15 -040053extern const struct hypervisor_x86 x86_hyper_xen;
Prarit Bhargavafc733732012-07-06 13:47:39 -040054extern const struct hypervisor_x86 x86_hyper_kvm;
H. Peter Anvine08cae42010-05-07 16:57:28 -070055
Borislav Petkov6276a072013-03-04 21:20:21 +010056extern void init_hypervisor(struct cpuinfo_x86 *c);
57extern void init_hypervisor_platform(void);
58extern bool hypervisor_x2apic_available(void);
59#else
60static inline void init_hypervisor(struct cpuinfo_x86 *c) { }
61static inline void init_hypervisor_platform(void) { }
62static inline bool hypervisor_x2apic_available(void) { return false; }
63#endif /* CONFIG_HYPERVISOR_GUEST */
64#endif /* _ASM_X86_HYPERVISOR_H */