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      1 /* $NetBSD: intr.h,v 1.9 2012/03/03 21:15:16 reinoud Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2007 Jared D. McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _ARCH_USERMODE_INCLUDE_INTR_H
     30 #define _ARCH_USERMODE_INCLUDE_INTR_H
     31 
     32 #include <machine/intrdefs.h>
     33 #include <sys/siginfo.h>
     34 
     35 /* spl */
     36 void	splinit(void);
     37 int	splraise(int);
     38 void	spllower(int);
     39 
     40 #define	spl0()		spllower(IPL_NONE)
     41 #define splx(x)		spllower(x)
     42 
     43 /* traps */
     44 typedef void (sigfunc_t)(siginfo_t *info, vaddr_t from_userland, vaddr_t pc, vaddr_t va);
     45 extern void setup_signal_handlers(void);
     46 extern void  signal_intr_establish(int sig, sigfunc_t f);
     47 extern void *sigio_intr_establish(int (*)(void *), void *);
     48 
     49 /* spl implementation */
     50 typedef uint8_t ipl_t;
     51 typedef struct {
     52 	ipl_t _ipl;
     53 } ipl_cookie_t;
     54 
     55 static inline ipl_cookie_t
     56 makeiplcookie(ipl_t ipl)
     57 {
     58 	return (ipl_cookie_t){._ipl = ipl};
     59 }
     60 
     61 static inline int
     62 splraiseipl(ipl_cookie_t icookie)
     63 {
     64 	return splraise(icookie._ipl);
     65 }
     66 
     67 #include <sys/spl.h>
     68 
     69 /* for trap.c */
     70 
     71 #endif /* !_ARCH_USERMODE_INCLUDE_INTR_H */
     72