/*
* Copyright (C) 2008, VMware, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#ifndef _ASM_X86_HYPERVISOR_H
#define _ASM_X86_HYPERVISOR_H

#ifdef CONFIG_HYPERVISOR_GUEST

#include <asm/kvm_para.h>
#include <asm/xen/hypervisor.h>

/*
* x86 hypervisor information
*/
struct hypervisor_x86 {
/* Hypervisor name */
const char *name;

/* Detection routine */
uint32_t (*detect)(void);

/* Adjust CPU feature bits (run once per CPU) */
void (*set_cpu_features)(struct cpuinfo_x86 *);

/* Platform setup (run once per boot) */
void (*init_platform)(void);

/* X2APIC detection (run once per boot) */
bool (*x2apic_available)(void);
};

extern const struct hypervisor_x86 *x86_hyper;

/* Recognized hypervisors */
extern const struct hypervisor_x86 x86_hyper_vmware;
extern const struct hypervisor_x86 x86_hyper_ms_hyperv;
extern const struct hypervisor_x86 x86_hyper_xen_hvm;
extern const struct hypervisor_x86 x86_hyper_kvm;

extern void init_hypervisor(struct cpuinfo_x86 *c);
extern void init_hypervisor_platform(void);
extern bool hypervisor_x2apic_available(void);
#else
static inline void init_hypervisor(struct cpuinfo_x86 *c) { }
static inline void init_hypervisor_platform(void) { }
static inline bool hypervisor_x2apic_available(void) { return false; }
#endif /* CONFIG_HYPERVISOR_GUEST */
#endif /* _ASM_X86_HYPERVISOR_H */