1 /* $NetBSD: picvar.h,v 1.5 2010/11/15 09:25:58 bsh 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 #include <sys/evcnt.h> 61 62 #ifndef PIC_MAXPICS 63 #define PIC_MAXPICS 32 64 #endif 65 #ifndef PIC_MAXSOURCES 66 #define PIC_MAXSOURCES 64 67 #endif 68 #ifndef PIC_MAXMAXSOURCES 69 #define PIC_MAXMAXSOURCES 128 70 #endif 71 72 struct intrsource { 73 int (*is_func)(void *); 74 void *is_arg; 75 struct pic_softc *is_pic; /* owning PIC */ 76 uint8_t is_type; /* IST_xxx */ 77 uint8_t is_ipl; /* IPL_xxx */ 78 uint8_t is_irq; /* local to pic */ 79 uint8_t is_iplidx; 80 struct evcnt is_ev; 81 char is_source[16]; 82 }; 83 84 struct pic_softc { 85 const struct pic_ops *pic_ops; 86 struct intrsource **pic_sources; 87 volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32]; 88 volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32]; 89 volatile uint32_t pic_pending_ipls; 90 size_t pic_maxsources; 91 uint8_t pic_id; 92 int16_t pic_irqbase; 93 char pic_name[14]; 94 }; 95 96 struct pic_ops { 97 void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t); 98 void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t); 99 int (*pic_find_pending_irqs)(struct pic_softc *); 100 101 void (*pic_establish_irq)(struct pic_softc *, struct intrsource *); 102 void (*pic_source_name)(struct pic_softc *, int, char *, size_t); 103 }; 104 105 106 void pic_add(struct pic_softc *, int); 107 void pic_do_pending_int(void); 108 109 extern struct pic_softc * pic_list[PIC_MAXPICS]; 110 #endif /* _INTR_PRIVATE */ 111 112 #endif /* _ARM_PIC_PICVAR_H_ */ 113