/*      $OpenBSD: psl.h,v 1.21 2018/07/09 19:20:30 guenther Exp $       */
/*      $NetBSD: psl.h,v 1.30 1996/05/13 01:28:05 mycroft Exp $ */

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * 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. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 *      @(#)psl.h       5.2 (Berkeley) 1/18/91
 */

#ifndef _MACHINE_PSL_H_
#define _MACHINE_PSL_H_

/*
 * 386 processor status longword.
 */
#define PSL_C           0x00000001      /* carry flag */
#define PSL_PF          0x00000004      /* parity flag */
#define PSL_AF          0x00000010      /* auxiliary carry flag */
#define PSL_Z           0x00000040      /* zero flag */
#define PSL_N           0x00000080      /* sign flag */
#define PSL_T           0x00000100      /* trap flag */
#define PSL_I           0x00000200      /* interrupt enable flag */
#define PSL_D           0x00000400      /* direction flag */
#define PSL_V           0x00000800      /* overflow flag */
#define PSL_IOPL        0x00003000      /* i/o privilege level */
#define PSL_NT          0x00004000      /* nested task */
#define PSL_RF          0x00010000      /* resume flag */
#define PSL_VM          0x00020000      /* virtual 8086 mode */
#define PSL_AC          0x00040000      /* alignment check flag */
#define PSL_VIF         0x00080000      /* virtual interrupt enable flag */
#define PSL_VIP         0x00100000      /* virtual interrupt pending flag */
#define PSL_ID          0x00200000      /* identification flag */
#define PSL_XCRYPT      0x40000000      /* VIA xcrypt: operation loaded */

#define PSL_MBO         0x00000002      /* must be one bits */
#define PSL_MBZ         0xffc08028      /* must be zero bits */

#define PSL_USERSET     (PSL_MBO | PSL_I)
#define PSL_USERSTATIC  (PSL_MBO | PSL_MBZ | PSL_I | PSL_IOPL | PSL_NT | PSL_VM | PSL_VIF | PSL_VIP)

#ifdef _KERNEL
#include <machine/intr.h>

#ifndef _LOCORE

#include <sys/evcount.h>

/*
 * Interrupt handler chains.  isa_intr_establish() inserts a handler into
 * the list.  The handler is called with its (single) argument.
 */

struct intrhand {
        int             (*ih_fun)(void *);
        void            *ih_arg;
        int             ih_level;
        int             ih_flags;
        struct intrhand *ih_next;
        int             ih_pin;
        int             ih_irq;
        struct evcount  ih_count;
        int             ih_vec;
};

extern int intr_shared_edge;    /* This system has shared edge interrupts */

#endif /* _LOCORE */
#endif /* _KERNEL */
 
#endif /* !_MACHINE_PSL_H_ */