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intr.h revision 1.21.18.1 
      1 /*	$NetBSD: intr.h,v 1.21.18.1 2008/05/16 02:21:55 yamt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000, 2001 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  *
     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 _ARC_INTR_H_
     33 #define _ARC_INTR_H_
     34 
     35 #define IPL_NONE	0	/* disable only this interrupt */
     36 #define IPL_SOFTCLOCK	1	/* generic software interrupts (SI 0) */
     37 #define IPL_SOFTBIO	1	/* clock software interrupts (SI 0) */
     38 #define IPL_SOFTNET	2	/* network software interrupts (SI 1) */
     39 #define IPL_SOFTSERIAL	2	/* serial software interrupts (SI 1) */
     40 #define	IPL_VM		3
     41 #define IPL_SCHED	4
     42 #define IPL_HIGH	4
     43 
     44 #define _IPL_N		5
     45 
     46 #define _IPL_SI0_FIRST	IPL_SOFTCLOCK
     47 #define _IPL_SI0_LAST	IPL_SOFTBIO
     48 
     49 #define _IPL_SI1_FIRST	IPL_SOFTNET
     50 #define _IPL_SI1_LAST	IPL_SOFTSERIAL
     51 
     52 /* Interrupt sharing types. */
     53 #define IST_NONE	0	/* none */
     54 #define IST_PULSE	1	/* pulsed */
     55 #define IST_EDGE	2	/* edge-triggered */
     56 #define IST_LEVEL	3	/* level-triggered */
     57 
     58 #ifdef _KERNEL
     59 #ifndef _LOCORE
     60 
     61 #include <mips/locore.h>
     62 
     63 extern const uint32_t *ipl_sr_bits;
     64 
     65 #define spl0()		(void)_spllower(0)
     66 #define splx(s)		(void)_splset(s)
     67 
     68 typedef int ipl_t;
     69 typedef struct {
     70 	ipl_t _sr;
     71 } ipl_cookie_t;
     72 
     73 static inline ipl_cookie_t
     74 makeiplcookie(ipl_t ipl)
     75 {
     76 
     77 	return (ipl_cookie_t){._sr = ipl_sr_bits[ipl]};
     78 }
     79 
     80 static inline int
     81 splraiseipl(ipl_cookie_t icookie)
     82 {
     83 
     84 	return _splraise(icookie._sr);
     85 }
     86 
     87 #include <sys/spl.h>
     88 
     89 #include <mips/softintr.h>
     90 
     91 struct clockframe;
     92 void arc_set_intr(uint32_t, uint32_t (*)(uint32_t, struct clockframe *), int);
     93 extern uint32_t cpu_int_mask;
     94 
     95 /* priority order to handle each CPU INT line specified via set_intr() */
     96 #define ARC_INTPRI_TIMER_INT	0	/* independent CPU INT for timer */
     97 #define ARC_INTPRI_JAZZ		1	/* CPU INT for JAZZ local bus */
     98 #define ARC_INTPRI_PCIISA	2	/* CPU INT for PCI/EISA/ISA */
     99 #define ARC_NINTPRI		3	/* number of total used CPU INTs */
    100 
    101 #endif /* !_LOCORE */
    102 #endif /* _KERNEL */
    103 
    104 #endif /* _ARC_INTR_H_ */
    105