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intr.h revision 1.6.10.2 
      1 /*	$NetBSD: intr.h,v 1.6.10.2 2008/01/09 01:45:57 matt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000, 2001, 2004 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _EWS4800MIPS_INTR_H_
     40 #define	_EWS4800MIPS_INTR_H_
     41 
     42 #define IPL_NONE	0	/* disable only this interrupt */
     43 #define IPL_SOFTCLOCK	1	/* clock software interrupts (SI 0) */
     44 #define IPL_SOFTBIO	1	/* bio software interrupts (SI 0) */
     45 #define IPL_SOFTNET	2	/* network software interrupts (SI 1) */
     46 #define IPL_SOFTSERIAL	2	/* serial software interrupts (SI 1) */
     47 #define	IPL_VM		3
     48 #define IPL_SCHED	4	/* disable clock interrupts */
     49 #define IPL_HIGH	4	/* disable all interrupts */
     50 
     51 #define _IPL_N		5
     52 
     53 #define _IPL_SI0_FIRST	IPL_SOFTCLOCK
     54 #define _IPL_SI0_LAST	IPL_SOFTBIO
     55 
     56 #define _IPL_SI1_FIRST	IPL_SOFTNET
     57 #define _IPL_SI1_LAST	IPL_SOFTSERIAL
     58 
     59 #define IST_UNUSABLE	-1	/* interrupt cannot be used */
     60 #define IST_NONE	0	/* none (dummy) */
     61 #define IST_PULSE	1	/* pulsed */
     62 #define IST_EDGE	2	/* edge-triggered */
     63 #define IST_LEVEL	3	/* level-triggered */
     64 
     65 #include <mips/locore.h>
     66 
     67 extern const uint32_t *ipl_sr_bits;
     68 
     69 #define spl0()		(void) _spllower(0)
     70 #define splx(s)		(void) _splset(s)
     71 
     72 typedef int ipl_t;
     73 typedef struct {
     74 	ipl_t _sr;
     75 } ipl_cookie_t;
     76 
     77 static inline ipl_cookie_t
     78 makeiplcookie(ipl_t ipl)
     79 {
     80 
     81 	return (ipl_cookie_t){._sr = ipl_sr_bits[ipl]};
     82 }
     83 
     84 static inline int
     85 splraiseipl(ipl_cookie_t icookie)
     86 {
     87 
     88 	return _splraise(icookie._sr);
     89 }
     90 
     91 #include <sys/spl.h>
     92 
     93 void intr_init(void);
     94 void intr_establish(int, int (*)(void *), void *);
     95 void intr_disestablish(void *);
     96 
     97 #endif /* !_EWS4800MIPS_INTR_H_ */
     98