sys/arch/arm/pic/picvar.h

   1 /*      $NetBSD: picvar.h,v 1.3 2008/04/28 20:23:14 martin 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_ */