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/*
* Nested HVM
* Copyright (c) 2011, Advanced Micro Devices, Inc.
* Author: Christoph Egger <Christoph.Egger@amd.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. 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., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*/
#ifndef _HVM_NESTEDHVM_H
#define _HVM_NESTEDHVM_H
#include <xen/types.h> /* for uintNN_t */
#include <xen/sched.h> /* for struct vcpu, struct domain */
#include <asm/hvm/vcpu.h> /* for vcpu_nestedhvm */
enum nestedhvm_vmexits {
NESTEDHVM_VMEXIT_ERROR = 0, /* inject VMEXIT w/ invalid VMCB */
NESTEDHVM_VMEXIT_FATALERROR = 1, /* crash first level guest */
NESTEDHVM_VMEXIT_HOST = 2, /* exit handled on host level */
NESTEDHVM_VMEXIT_CONTINUE = 3, /* further handling */
NESTEDHVM_VMEXIT_INJECT = 4, /* inject VMEXIT */
NESTEDHVM_VMEXIT_DONE = 5, /* VMEXIT handled */
};
/* Nested HVM on/off per domain */
bool_t nestedhvm_enabled(struct domain *d);
/* Nested VCPU */
int nestedhvm_vcpu_initialise(struct vcpu *v);
void nestedhvm_vcpu_destroy(struct vcpu *v);
void nestedhvm_vcpu_reset(struct vcpu *v);
bool_t nestedhvm_vcpu_in_guestmode(struct vcpu *v);
#define nestedhvm_vcpu_enter_guestmode(v) \
vcpu_nestedhvm(v).nv_guestmode = 1
#define nestedhvm_vcpu_exit_guestmode(v) \
vcpu_nestedhvm(v).nv_guestmode = 0
/* Nested paging */
#define NESTEDHVM_PAGEFAULT_DONE 0
#define NESTEDHVM_PAGEFAULT_INJECT 1
#define NESTEDHVM_PAGEFAULT_L1_ERROR 2
#define NESTEDHVM_PAGEFAULT_L0_ERROR 3
#define NESTEDHVM_PAGEFAULT_MMIO 4
#define NESTEDHVM_PAGEFAULT_RETRY 5
int nestedhvm_hap_nested_page_fault(struct vcpu *v, paddr_t *L2_gpa,
bool_t access_r, bool_t access_w, bool_t access_x);
/* IO permission map */
unsigned long *nestedhvm_vcpu_iomap_get(bool_t ioport_80, bool_t ioport_ed);
/* Misc */
#define nestedhvm_paging_mode_hap(v) (!!nhvm_vmcx_hap_enabled(v))
#define nestedhvm_vmswitch_in_progress(v) \
(!!vcpu_nestedhvm((v)).nv_vmswitch_in_progress)
void nestedhvm_vmcx_flushtlb(struct p2m_domain *p2m);
bool_t nestedhvm_is_n2(struct vcpu *v);
#endif /* _HVM_NESTEDHVM_H */
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