1/* $OpenBSD: psl.h,v 1.21 2018/07/09 19:20:30 guenther Exp $ */
2/* $NetBSD: psl.h,v 1.30 1996/05/13 01:28:05 mycroft Exp $ */
3
4/*-
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * William Jolitz.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * @(#)psl.h 5.2 (Berkeley) 1/18/91
36 */
37
38#ifndef _MACHINE_PSL_H_
39#define _MACHINE_PSL_H_
40
41/*
42 * 386 processor status longword.
43 */
44#define PSL_C 0x00000001 /* carry flag */
45#define PSL_PF 0x00000004 /* parity flag */
46#define PSL_AF 0x00000010 /* auxiliary carry flag */
47#define PSL_Z 0x00000040 /* zero flag */
48#define PSL_N 0x00000080 /* sign flag */
49#define PSL_T 0x00000100 /* trap flag */
50#define PSL_I 0x00000200 /* interrupt enable flag */
51#define PSL_D 0x00000400 /* direction flag */
52#define PSL_V 0x00000800 /* overflow flag */
53#define PSL_IOPL 0x00003000 /* i/o privilege level */
54#define PSL_NT 0x00004000 /* nested task */
55#define PSL_RF 0x00010000 /* resume flag */
56#define PSL_VM 0x00020000 /* virtual 8086 mode */
57#define PSL_AC 0x00040000 /* alignment check flag */
58#define PSL_VIF 0x00080000 /* virtual interrupt enable flag */
59#define PSL_VIP 0x00100000 /* virtual interrupt pending flag */
60#define PSL_ID 0x00200000 /* identification flag */
61#define PSL_XCRYPT 0x40000000 /* VIA xcrypt: operation loaded */
62
63#define PSL_MBO 0x00000002 /* must be one bits */
64#define PSL_MBZ 0xffc08028 /* must be zero bits */
65
66#define PSL_USERSET (PSL_MBO | PSL_I)
67#define PSL_USERSTATIC (PSL_MBO | PSL_MBZ | PSL_I | PSL_IOPL | PSL_NT | PSL_VM | PSL_VIF | PSL_VIP)
68
69#ifdef _KERNEL
70#include <machine/intr.h>
71
72#ifndef _LOCORE
73
74#include <sys/evcount.h>
75
76/*
77 * Interrupt handler chains. isa_intr_establish() inserts a handler into
78 * the list. The handler is called with its (single) argument.
79 */
80
81struct intrhand {
82 int (*ih_fun)(void *);
83 void *ih_arg;
84 int ih_level;
85 int ih_flags;
86 struct intrhand *ih_next;
87 int ih_pin;
88 int ih_irq;
89 struct evcount ih_count;
90 int ih_vec;
91};
92
93extern int intr_shared_edge; /* This system has shared edge interrupts */
94
95#endif /* _LOCORE */
96#endif /* _KERNEL */
97
98#endif /* !_MACHINE_PSL_H_ */