picvar.h revision 1.9
1 /* $NetBSD: picvar.h,v 1.9 2014/03/13 23:47:53 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 #ifdef MULTIPROCESSOR 34 #include <sys/kcpuset.h> 35 #endif 36 37 int _splraise(int); 38 int _spllower(int); 39 void splx(int); 40 const char * 41 intr_typename(int); 42 43 struct pic_softc; 44 struct intrsource; 45 struct cpu_info; 46 47 #define IPI_AST 0 /* just get an interrupt */ 48 #define IPI_XCALL 1 /* xcall */ 49 #define IPI_NOP 2 /* just get an interrupt (armv6) */ 50 #define IPI_SHOOTDOWN 3 /* cause a tlb shootdown */ 51 #define IPI_DDB 4 /* enter DDB */ 52 #ifdef __HAVE_PREEMPTION 53 #define IPI_KPREEMPT 5 /* cause a preemption */ 54 #define NIPI 6 55 #else 56 #define NIPI 5 57 #endif 58 59 int pic_handle_intr(void *); 60 void pic_mark_pending(struct pic_softc *pic, int irq); 61 void pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is); 62 uint32_t pic_mark_pending_sources(struct pic_softc *pic, size_t irq_base, 63 uint32_t pending); 64 void *pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type, 65 int (*func)(void *), void *arg); 66 int pic_alloc_irq(struct pic_softc *pic); 67 void pic_disestablish_source(struct intrsource *is); 68 void pic_do_pending_ints(register_t psw, int newipl, void *frame); 69 void pic_dispatch(struct intrsource *is, void *frame); 70 71 void *intr_establish(int irq, int ipl, int type, int (*func)(void *), 72 void *arg); 73 void intr_disestablish(void *); 74 #ifdef MULTIPROCESSOR 75 void intr_cpu_init(struct cpu_info *); 76 void intr_ipi_send(const kcpuset_t *, u_long ipi); 77 #endif 78 79 #ifdef _INTR_PRIVATE 80 81 #include "opt_arm_intr_impl.h" 82 83 #include <sys/evcnt.h> 84 #include <sys/percpu.h> 85 86 #ifndef PIC_MAXPICS 87 #define PIC_MAXPICS 32 88 #endif 89 #ifndef PIC_MAXSOURCES 90 #define PIC_MAXSOURCES 64 91 #endif 92 #ifndef PIC_MAXMAXSOURCES 93 #define PIC_MAXMAXSOURCES 128 94 #endif 95 96 struct intrsource { 97 int (*is_func)(void *); 98 void *is_arg; 99 struct pic_softc *is_pic; /* owning PIC */ 100 uint8_t is_type; /* IST_xxx */ 101 uint8_t is_ipl; /* IPL_xxx */ 102 uint8_t is_irq; /* local to pic */ 103 uint8_t is_iplidx; 104 bool is_mpsafe; 105 char is_source[16]; 106 }; 107 108 struct pic_percpu { 109 struct evcnt *pcpu_evs; 110 char *pcpu_name; 111 uint32_t pcpu_magic; 112 }; 113 114 #define PICPERCPU_MAGIC 0xfeedface 115 116 struct pic_softc { 117 const struct pic_ops *pic_ops; 118 struct intrsource **pic_sources; 119 volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32]; 120 volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32]; 121 volatile uint32_t pic_pending_ipls; 122 size_t pic_maxsources; 123 percpu_t *pic_percpu; 124 uint8_t pic_id; 125 int16_t pic_irqbase; 126 char pic_name[14]; 127 }; 128 129 struct pic_ops { 130 void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t); 131 void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t); 132 int (*pic_find_pending_irqs)(struct pic_softc *); 133 134 void (*pic_establish_irq)(struct pic_softc *, struct intrsource *); 135 void (*pic_source_name)(struct pic_softc *, int, char *, size_t); 136 137 #ifdef __HAVE_PIC_SET_PRIORITY 138 void (*pic_set_priority)(struct pic_softc *, int); 139 #endif 140 #ifdef MULTIPROCESSOR 141 void (*pic_cpu_init)(struct pic_softc *, struct cpu_info *); 142 void (*pic_ipi_send)(struct pic_softc *, const kcpuset_t *, u_long); 143 #endif 144 }; 145 146 #ifdef __HAVE_PIC_SET_PRIORITY 147 /* 148 * This is used to update a hardware pic with a value corresponding 149 * to the ipl being set. 150 */ 151 struct cpu_info; 152 void pic_set_priority(struct cpu_info *, int); 153 #else 154 /* Using an inline causes catch-22 problems with cpu.h */ 155 #define pic_set_priority(ci, newipl) ((void)((ci)->ci_cpl = (newipl))) 156 #endif 157 158 void pic_add(struct pic_softc *, int); 159 void pic_do_pending_int(void); 160 #ifdef MULTIPROCESSOR 161 int pic_ipi_nop(void *); 162 int pic_ipi_xcall(void *); 163 int pic_ipi_shootdown(void *); 164 int pic_ipi_ddb(void *); 165 #endif 166 #ifdef __HAVE_PIC_FAST_SOFTINTS 167 int pic_handle_softint(void *); 168 #endif 169 170 extern struct pic_softc * pic_list[PIC_MAXPICS]; 171 #endif /* _INTR_PRIVATE */ 172 173 #endif /* _ARM_PIC_PICVAR_H_ */ 174
Indexes created Mon Sep 29 13:09:55 GMT 2025