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#ifdef CONFIG_HYPERVISOR_GUEST
24
25#include <asm/kvm_para.h>
26#include <asm/xen/hypervisor.h>
27
28/*
29 * x86 hypervisor information
30 */
31struct hypervisor_x86 {
32	/* Hypervisor name */
33	const char	*name;
34
35	/* Detection routine */
36	uint32_t	(*detect)(void);
37
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);
43
44	/* X2APIC detection (run once per boot) */
45	bool		(*x2apic_available)(void);
46};
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;
53extern const struct hypervisor_x86 x86_hyper_xen;
54extern const struct hypervisor_x86 x86_hyper_kvm;
55
56extern 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 */
65