/*	$NetBSD: vmware.h,v 1.1 2022/10/25 23:39:01 riastradh Exp $	*/

/*-
 * Copyright (c) 2022 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _ASM_VMWARE_H_
#define _ASM_VMWARE_H_

#include <sys/cdefs.h>

#if defined __i386__ || defined __x86_64__

#define	VMWARE_HYPERVISOR_PORT		0x5658
#define	VMWARE_HYPERVISOR_PORT_HB	0x5659

#define	VMWARE_HYPERVISOR_HB		__BIT(0)
#define	VMWARE_HYPERVISOR_OUT		__BIT(1)

/* XXX support vmcall/vmmcall */
#define	VMWARE_HYPERCALL						      \
	"movw $"__STRING(VMWARE_HYPERVISOR_PORT)",%%dx;"		      \
	"inl (%%dx),%%eax;"

#define	VMWARE_HYPERCALL_HB_OUT						      \
	"movw $"__STRING(VMWARE_HYPERVISOR_PORT_HB)",%%dx;"		      \
	"rep outsb;"

#define	VMWARE_HYPERCALL_HB_IN						      \
	"movw $"__STRING(VMWARE_HYPERVISOR_PORT_HB)",%%dx;"		      \
	"rep insb;"

#endif

#endif  /* _ASM_BARRIER_H_ */