1/* $NetBSD: tss.h,v 1.8 2018/07/07 21:35:16 kamil Exp $ */ 2 3/* 4 * Copyright (c) 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Frank van der Linden for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38#ifndef _AMD64_TSS_H_ 39#define _AMD64_TSS_H_ 40 41#ifdef __x86_64__ 42 43/* 44 * TSS structure. Since TSS hw switching is not supported in long 45 * mode, this is mainly there for the I/O permission map in 46 * normal processes. 47 */ 48 49struct x86_64_tss { 50 uint32_t tss_reserved1; 51 uint64_t tss_rsp0; 52 uint64_t tss_rsp1; 53 uint64_t tss_rsp2; 54 uint32_t tss_reserved2; 55 uint32_t tss_reserved3; 56 uint64_t tss_ist[7]; 57 uint32_t tss_reserved4; 58 uint32_t tss_reserved5; 59 uint32_t tss_iobase; 60} __packed; 61 62/* 63 * I/O bitmap offset beyond TSS's segment limit means no bitmaps. 64 * (i.e. any I/O attempt generates an exception.) 65 */ 66#define IOMAP_INVALOFF 0xffffu 67 68/* 69 * If we have an I/O bitmap, there is only one valid offset. 70 */ 71#define IOMAP_VALIDOFF sizeof(struct x86_64_tss) 72 73#else /* __x86_64__ */ 74 75#include <i386/tss.h> 76 77#endif /* __x86_64__ */ 78 79#endif /* _AMD64_TSS_H_ */ 80