xref: /src/sys/arch/arm/pic/picvar.h

/*	$NetBSD: picvar.h,v 1.1.20.1 2008/06/02 13:21:55 mjf Exp $	*/
/*-
 * Copyright (c) 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Matt Thomas.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef _ARM_PIC_PICVAR_H_
#define _ARM_PIC_PICVAR_H_

int	_splraise(int);
int	_spllower(int);
void	splx(int);
const char *
	intr_typename(int);

struct pic_softc;
struct intrsource;

int	pic_handle_intr(void *);
void	pic_mark_pending(struct pic_softc *pic, int irq);
void	pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is);
uint32_t pic_mark_pending_sources(struct pic_softc *pic, size_t irq_base,
	    uint32_t pending);
void	*pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type,
	    int (*func)(void *), void *arg);
int	pic_alloc_irq(struct pic_softc *pic);
void	pic_disestablish_source(struct intrsource *is);
void	pic_do_pending_ints(register_t psw, int newipl, void *frame);
void	pic_dispatch(struct intrsource *is, void *frame);

void	*intr_establish(int irq, int ipl, int type, int (*func)(void *),
	    void *arg);
void	intr_disestablish(void *);

#ifdef _INTR_PRIVATE

#ifndef PIC_MAXPICS
#define PIC_MAXPICS	32
#endif
#ifndef PIC_MAXSOURCES
#define	PIC_MAXSOURCES	64
#endif
#ifndef PIC_MAXMAXSOURCES
#define	PIC_MAXMAXSOURCES	128
#endif

struct intrsource {
	int (*is_func)(void *);
	void *is_arg;
	struct pic_softc *is_pic;		/* owning PIC */
	uint8_t is_type;			/* IST_xxx */
	uint8_t is_ipl;				/* IPL_xxx */
	uint8_t is_irq;				/* local to pic */
	uint8_t is_iplidx;
	struct evcnt is_ev;
	char is_source[16];
};

struct pic_softc {
	const struct pic_ops *pic_ops;
	struct intrsource **pic_sources;
	uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32];
	uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32];
	uint32_t pic_pending_ipls;
	size_t pic_maxsources;
	uint8_t pic_id;
	int16_t pic_irqbase;
	char pic_name[14];
};

struct pic_ops {
	void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t);
	void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t);
	int (*pic_find_pending_irqs)(struct pic_softc *);

	void (*pic_establish_irq)(struct pic_softc *, struct intrsource *);
	void (*pic_source_name)(struct pic_softc *, int, char *, size_t);
};


void	pic_add(struct pic_softc *, int);
void	pic_do_pending_int(void);

extern struct pic_softc * pic_list[PIC_MAXPICS];
#endif /* _INTR_PRIVATE */

#endif /* _ARM_PIC_PICVAR_H_ */