/*      $NetBSD: tss.h,v 1.8 2018/07/07 21:35:16 kamil Exp $    */

/*
* Copyright (c) 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Frank van der Linden for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project by
*      Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
*    or promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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 _AMD64_TSS_H_
#define _AMD64_TSS_H_

#ifdef __x86_64__

/*
* TSS structure. Since TSS hw switching is not supported in long
* mode, this is mainly there for the I/O permission map in
* normal processes.
*/

struct x86_64_tss {
       uint32_t        tss_reserved1;
       uint64_t        tss_rsp0;
       uint64_t        tss_rsp1;
       uint64_t        tss_rsp2;
       uint32_t        tss_reserved2;
       uint32_t        tss_reserved3;
       uint64_t        tss_ist[7];
       uint32_t        tss_reserved4;
       uint32_t        tss_reserved5;
       uint32_t        tss_iobase;
} __packed;

/*
* I/O bitmap offset beyond TSS's segment limit means no bitmaps.
* (i.e. any I/O attempt generates an exception.)
*/
#define IOMAP_INVALOFF  0xffffu

/*
* If we have an I/O bitmap, there is only one valid offset.
*/
#define IOMAP_VALIDOFF  sizeof(struct x86_64_tss)

#else   /*      __x86_64__      */

#include <i386/tss.h>

#endif  /*      __x86_64__      */

#endif /* _AMD64_TSS_H_ */