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picvar.h revision 1.4 
      1 /*	$NetBSD: picvar.h,v 1.4 2008/12/30 05:43:14 matt Exp $	*/
      2 /*-
      3  * Copyright (c) 2008 The NetBSD Foundation, Inc.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Matt Thomas.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 #ifndef _ARM_PIC_PICVAR_H_
     31 #define _ARM_PIC_PICVAR_H_
     32 
     33 int	_splraise(int);
     34 int	_spllower(int);
     35 void	splx(int);
     36 const char *
     37 	intr_typename(int);
     38 
     39 struct pic_softc;
     40 struct intrsource;
     41 
     42 int	pic_handle_intr(void *);
     43 void	pic_mark_pending(struct pic_softc *pic, int irq);
     44 void	pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is);
     45 uint32_t pic_mark_pending_sources(struct pic_softc *pic, size_t irq_base,
     46 	    uint32_t pending);
     47 void	*pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type,
     48 	    int (*func)(void *), void *arg);
     49 int	pic_alloc_irq(struct pic_softc *pic);
     50 void	pic_disestablish_source(struct intrsource *is);
     51 void	pic_do_pending_ints(register_t psw, int newipl, void *frame);
     52 void	pic_dispatch(struct intrsource *is, void *frame);
     53 
     54 void	*intr_establish(int irq, int ipl, int type, int (*func)(void *),
     55 	    void *arg);
     56 void	intr_disestablish(void *);
     57 
     58 #ifdef _INTR_PRIVATE
     59 
     60 #ifndef PIC_MAXPICS
     61 #define PIC_MAXPICS	32
     62 #endif
     63 #ifndef PIC_MAXSOURCES
     64 #define	PIC_MAXSOURCES	64
     65 #endif
     66 #ifndef PIC_MAXMAXSOURCES
     67 #define	PIC_MAXMAXSOURCES	128
     68 #endif
     69 
     70 struct intrsource {
     71 	int (*is_func)(void *);
     72 	void *is_arg;
     73 	struct pic_softc *is_pic;		/* owning PIC */
     74 	uint8_t is_type;			/* IST_xxx */
     75 	uint8_t is_ipl;				/* IPL_xxx */
     76 	uint8_t is_irq;				/* local to pic */
     77 	uint8_t is_iplidx;
     78 	struct evcnt is_ev;
     79 	char is_source[16];
     80 };
     81 
     82 struct pic_softc {
     83 	const struct pic_ops *pic_ops;
     84 	struct intrsource **pic_sources;
     85 	volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32];
     86 	volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32];
     87 	volatile uint32_t pic_pending_ipls;
     88 	size_t pic_maxsources;
     89 	uint8_t pic_id;
     90 	int16_t pic_irqbase;
     91 	char pic_name[14];
     92 };
     93 
     94 struct pic_ops {
     95 	void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t);
     96 	void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t);
     97 	int (*pic_find_pending_irqs)(struct pic_softc *);
     98 
     99 	void (*pic_establish_irq)(struct pic_softc *, struct intrsource *);
    100 	void (*pic_source_name)(struct pic_softc *, int, char *, size_t);
    101 };
    102 
    103 
    104 void	pic_add(struct pic_softc *, int);
    105 void	pic_do_pending_int(void);
    106 
    107 extern struct pic_softc * pic_list[PIC_MAXPICS];
    108 #endif /* _INTR_PRIVATE */
    109 
    110 #endif /* _ARM_PIC_PICVAR_H_ */
    111