Home | History | Annotate | Line # | Download | only in sys 
      1 /*	$NetBSD: intr.h,v 1.21 2020/05/17 14:11:30 ad Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007, 2020 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Andrew Doran.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _SYS_INTR_H_
     33 #define	_SYS_INTR_H_
     34 
     35 #define INTRIDBUF 64
     36 #define INTRDEVNAMEBUF 256
     37 
     38 #ifdef _KERNEL
     39 
     40 #include <sys/types.h>
     41 
     42 struct cpu_info;
     43 
     44 /* Public interface. */
     45 void	*softint_establish(u_int, void (*)(void *), void *);
     46 void	softint_disestablish(void *);
     47 void	softint_schedule(void *);
     48 void	softint_schedule_cpu(void *, struct cpu_info *);
     49 
     50 /* MI hooks. */
     51 void	softint_init(struct cpu_info *);
     52 lwp_t	*softint_picklwp(void);
     53 void	softint_block(lwp_t *);
     54 
     55 /* MD-MI interface. */
     56 void	softint_init_md(lwp_t *, u_int, uintptr_t *);
     57 #ifndef __HAVE_MD_SOFTINT_TRIGGER
     58 void	softint_trigger(uintptr_t);
     59 #endif
     60 void	softint_dispatch(lwp_t *, int);
     61 
     62 /* Flags for softint_establish(). */
     63 #define	SOFTINT_BIO	0x0000
     64 #define	SOFTINT_CLOCK	0x0001
     65 #define	SOFTINT_SERIAL	0x0002
     66 #define	SOFTINT_NET	0x0003
     67 #define	SOFTINT_MPSAFE	0x0100
     68 #define	SOFTINT_RCPU	0x0200
     69 
     70 /* Implementation private flags. */
     71 #define	SOFTINT_PENDING	0x1000
     72 
     73 #define	SOFTINT_COUNT	0x0004
     74 #define	SOFTINT_LVLMASK	0x00ff
     75 #define	SOFTINT_IMPMASK	0xf000
     76 
     77 extern u_int	softint_timing;
     78 
     79 /*
     80  * Historical aliases.
     81  */
     82 #define	IPL_BIO		IPL_VM
     83 #define	IPL_NET		IPL_VM
     84 #define	IPL_TTY		IPL_VM
     85 #define	IPL_AUDIO	IPL_SCHED
     86 #define	IPL_CLOCK	IPL_SCHED
     87 #define	IPL_SERIAL	IPL_HIGH
     88 
     89 #define	splbio()	splvm()
     90 #define	splnet()	splvm()
     91 #define	spltty()	splvm()
     92 #define	splaudio()	splsched()
     93 #define	splclock()	splsched()
     94 #define	splserial()	splhigh()
     95 
     96 #include <machine/intr.h>
     97 
     98 #elif defined(_KMEMUSER)
     99 #define	SOFTINT_COUNT	0x0004
    100 #endif	/* _KERNEL */
    101 
    102 #endif	/* _SYS_INTR_H_ */
    103