picvar.h revision 1.14
1 /* $NetBSD: picvar.h,v 1.14 2015/04/11 16:47:47 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 #include "opt_multiprocessor.h" 34 35 #ifdef MULTIPROCESSOR 36 #include <sys/kcpuset.h> 37 #endif 38 39 int _splraise(int); 40 int _spllower(int); 41 void splx(int); 42 const char * 43 intr_typename(int); 44 45 struct pic_softc; 46 struct intrsource; 47 struct cpu_info; 48 49 #define IPI_AST 0 /* just get an interrupt */ 50 #define IPI_XCALL 1 /* xcall */ 51 #define IPI_NOP 2 /* just get an interrupt (armv6) */ 52 #define IPI_SHOOTDOWN 3 /* cause a tlb shootdown */ 53 #define IPI_DDB 4 /* enter DDB */ 54 #define IPI_GENERIC 5 /* generic IPI */ 55 #ifdef __HAVE_PREEMPTION 56 #define IPI_KPREEMPT 6 /* cause a preemption */ 57 #define NIPI 7 58 #else 59 #define NIPI 6 60 #endif 61 62 #if !defined(__HAVE_PIC_SET_PRIORITY) 63 #define __HAVE_PIC_PENDING_INTRS 64 #endif 65 66 int pic_handle_intr(void *); 67 #if defined(__HAVE_PIC_PENDING_INTRS) 68 void pic_mark_pending(struct pic_softc *pic, int irq); 69 void pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is); 70 uint32_t pic_mark_pending_sources(struct pic_softc *pic, size_t irq_base, 71 uint32_t pending); 72 #endif /* __HAVE_PIC_PENDING_INTRS */ 73 void *pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type, 74 int (*func)(void *), void *arg); 75 int pic_alloc_irq(struct pic_softc *pic); 76 void pic_disestablish_source(struct intrsource *is); 77 void pic_do_pending_ints(register_t psw, int newipl, void *frame); 78 void pic_dispatch(struct intrsource *is, void *frame); 79 80 void *intr_establish(int irq, int ipl, int type, int (*func)(void *), 81 void *arg); 82 void intr_disestablish(void *); 83 #ifdef MULTIPROCESSOR 84 void intr_cpu_init(struct cpu_info *); 85 void intr_ipi_send(const kcpuset_t *, u_long ipi); 86 #endif 87 88 #ifdef _INTR_PRIVATE 89 90 #include "opt_arm_intr_impl.h" 91 92 #include <sys/evcnt.h> 93 #include <sys/percpu.h> 94 95 #ifndef PIC_MAXPICS 96 #define PIC_MAXPICS 32 97 #endif 98 #ifndef PIC_MAXSOURCES 99 #define PIC_MAXSOURCES 64 100 #endif 101 #ifndef PIC_MAXMAXSOURCES 102 #define PIC_MAXMAXSOURCES 128 103 #endif 104 105 struct intrsource { 106 int (*is_func)(void *); 107 void *is_arg; 108 struct pic_softc *is_pic; /* owning PIC */ 109 uint8_t is_type; /* IST_xxx */ 110 uint8_t is_ipl; /* IPL_xxx */ 111 uint8_t is_irq; /* local to pic */ 112 uint8_t is_iplidx; 113 bool is_mpsafe; 114 char is_source[16]; 115 }; 116 117 struct pic_percpu { 118 struct evcnt *pcpu_evs; 119 char *pcpu_name; 120 uint32_t pcpu_magic; 121 }; 122 123 #define PICPERCPU_MAGIC 0xfeedface 124 125 struct pic_softc { 126 const struct pic_ops *pic_ops; 127 struct intrsource **pic_sources; 128 #ifdef __HAVE_PIC_PENDING_INTRS 129 volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32]; 130 volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32]; 131 volatile uint32_t pic_pending_ipls; 132 #endif 133 #ifdef MULTIPROCESSOR 134 kcpuset_t *pic_cpus; 135 #endif 136 size_t pic_maxsources; 137 percpu_t *pic_percpu; 138 uint8_t pic_id; 139 int16_t pic_irqbase; 140 char pic_name[14]; 141 }; 142 143 struct pic_ops { 144 void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t); 145 void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t); 146 int (*pic_find_pending_irqs)(struct pic_softc *); 147 148 void (*pic_establish_irq)(struct pic_softc *, struct intrsource *); 149 void (*pic_source_name)(struct pic_softc *, int, char *, size_t); 150 151 #ifdef __HAVE_PIC_SET_PRIORITY 152 void (*pic_set_priority)(struct pic_softc *, int); 153 #endif 154 #ifdef MULTIPROCESSOR 155 void (*pic_cpu_init)(struct pic_softc *, struct cpu_info *); 156 void (*pic_ipi_send)(struct pic_softc *, const kcpuset_t *, u_long); 157 #endif 158 }; 159 160 #ifdef __HAVE_PIC_SET_PRIORITY 161 /* 162 * This is used to update a hardware pic with a value corresponding 163 * to the ipl being set. 164 */ 165 struct cpu_info; 166 void pic_set_priority(struct cpu_info *, int); 167 #else 168 /* Using an inline causes catch-22 problems with cpu.h */ 169 #define pic_set_priority(ci, newipl) ((void)((ci)->ci_cpl = (newipl))) 170 #endif 171 172 void pic_add(struct pic_softc *, int); 173 void pic_do_pending_int(void); 174 #ifdef MULTIPROCESSOR 175 int pic_ipi_nop(void *); // IPI_KPREEMPT tto 176 int pic_ipi_xcall(void *); 177 int pic_ipi_generic(void *); 178 int pic_ipi_shootdown(void *); 179 int pic_ipi_ddb(void *); 180 #endif 181 #ifdef __HAVE_PIC_FAST_SOFTINTS 182 int pic_handle_softint(void *); 183 #endif 184 185 extern struct pic_softc * pic_list[PIC_MAXPICS]; 186 #endif /* _INTR_PRIVATE */ 187 188 #endif /* _ARM_PIC_PICVAR_H_ */ 189
Indexes created Mon Sep 29 13:09:55 GMT 2025