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intr.h revision 1.24.2.1 
      1 /*	$NetBSD: intr.h,v 1.24.2.1 2007/12/08 18:17:47 mjf Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2000 Soren S. Jorvang
      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  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *          This product includes software developed for the
     18  *          NetBSD Project.  See http://www.NetBSD.org/ for
     19  *          information about NetBSD.
     20  * 4. The name of the author may not be used to endorse or promote products
     21  *    derived from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #ifndef	_SGIMIPS_INTR_H_
     36 #define	_SGIMIPS_INTR_H_
     37 
     38 #define	IPL_NONE	0	/* Disable only this interrupt. */
     39 #define	IPL_SOFTCLOCK	1	/* generic software interrupts */
     40 #define	IPL_SOFTBIO	1	/* serial software interrupts */
     41 #define	IPL_SOFTNET	1	/* network software interrupts */
     42 #define	IPL_SOFTSERIAL	1	/* clock software interrupts */
     43 #define	IPL_VM		2
     44 #define	IPL_SCHED	3
     45 #define	IPL_HIGH	4
     46 
     47 #define NIPL		5
     48 
     49 /* Interrupt sharing types. */
     50 #define IST_NONE	0	/* none */
     51 #define IST_PULSE	1	/* pulsed */
     52 #define IST_EDGE	2	/* edge-triggered */
     53 #define IST_LEVEL	3	/* level-triggered */
     54 
     55 #ifdef _KERNEL
     56 #ifndef _LOCORE
     57 
     58 #include <sys/queue.h>
     59 #include <sys/types.h>
     60 #include <sys/device.h>
     61 #include <mips/cpuregs.h>
     62 #include <mips/locore.h>
     63 
     64 #define NINTR	32
     65 
     66 struct sgimips_intrhand {
     67 	LIST_ENTRY(sgimips_intrhand)
     68 		ih_q;
     69 	int	(*ih_fun) (void *);
     70 	void	 *ih_arg;
     71 	struct	sgimips_intr *ih_intrhead;
     72 	struct	sgimips_intrhand *ih_next;
     73 	int	ih_pending;
     74 };
     75 
     76 struct sgimips_intr {
     77 	LIST_HEAD(,sgimips_intrhand)
     78 		intr_q;
     79 	struct	evcnt ih_evcnt;
     80 	unsigned long intr_ipl;
     81 };
     82 
     83 extern struct sgimips_intrhand intrtab[];
     84 
     85 extern const int *ipl2spl_table;
     86 
     87 #define spl0()		(void)_spllower(0)
     88 #define splx(s)		(void)_splset(s)
     89 #define splvm()		_splraise(ipl2spl_table[IPL_VM])
     90 #define splsched()	_splraise(ipl2spl_table[IPL_SCHED])
     91 #define splhigh()	_splraise(MIPS_INT_MASK)
     92 
     93 #define splsoftclock()	_splraise(MIPS_SOFT_INT_MASK_1)
     94 #define splsoftbio()	splsoftclock()
     95 #define splsoftnet()	splsoftclock()
     96 #define splsoftserial()	splsoftclock()
     97 
     98 extern void *		cpu_intr_establish(int, int, int (*)(void *), void *);
     99 
    100 typedef int ipl_t;
    101 typedef struct {
    102 	int _spl;
    103 } ipl_cookie_t;
    104 
    105 ipl_cookie_t makeiplcookie(ipl_t);
    106 
    107 static inline int
    108 splraiseipl(ipl_cookie_t icookie)
    109 {
    110 
    111 	return _splraise(icookie._spl);
    112 }
    113 
    114 #include <mips/softintr.h>
    115 
    116 #endif /* _LOCORE */
    117 #endif /* !_KERNEL */
    118 
    119 #endif	/* !_SGIMIPS_INTR_H_ */
    120