picvar.h revision 1.10
1 /* $NetBSD: picvar.h,v 1.10 2014/05/19 22:47:53 rmind 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 #define IPI_GENERIC 5 /* generic IPI */ 53 #ifdef __HAVE_PREEMPTION 54 #define IPI_KPREEMPT 6 /* cause a preemption */ 55 #define NIPI 7 56 #else 57 #define NIPI 6 58 #endif 59 60 int pic_handle_intr(void *); 61 void pic_mark_pending(struct pic_softc *pic, int irq); 62 void pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is); 63 uint32_t pic_mark_pending_sources(struct pic_softc *pic, size_t irq_base, 64 uint32_t pending); 65 void *pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type, 66 int (*func)(void *), void *arg); 67 int pic_alloc_irq(struct pic_softc *pic); 68 void pic_disestablish_source(struct intrsource *is); 69 void pic_do_pending_ints(register_t psw, int newipl, void *frame); 70 void pic_dispatch(struct intrsource *is, void *frame); 71 72 void *intr_establish(int irq, int ipl, int type, int (*func)(void *), 73 void *arg); 74 void intr_disestablish(void *); 75 #ifdef MULTIPROCESSOR 76 void intr_cpu_init(struct cpu_info *); 77 void intr_ipi_send(const kcpuset_t *, u_long ipi); 78 #endif 79 80 #ifdef _INTR_PRIVATE 81 82 #include "opt_arm_intr_impl.h" 83 84 #include <sys/evcnt.h> 85 #include <sys/percpu.h> 86 87 #ifndef PIC_MAXPICS 88 #define PIC_MAXPICS 32 89 #endif 90 #ifndef PIC_MAXSOURCES 91 #define PIC_MAXSOURCES 64 92 #endif 93 #ifndef PIC_MAXMAXSOURCES 94 #define PIC_MAXMAXSOURCES 128 95 #endif 96 97 struct intrsource { 98 int (*is_func)(void *); 99 void *is_arg; 100 struct pic_softc *is_pic; /* owning PIC */ 101 uint8_t is_type; /* IST_xxx */ 102 uint8_t is_ipl; /* IPL_xxx */ 103 uint8_t is_irq; /* local to pic */ 104 uint8_t is_iplidx; 105 bool is_mpsafe; 106 char is_source[16]; 107 }; 108 109 struct pic_percpu { 110 struct evcnt *pcpu_evs; 111 char *pcpu_name; 112 uint32_t pcpu_magic; 113 }; 114 115 #define PICPERCPU_MAGIC 0xfeedface 116 117 struct pic_softc { 118 const struct pic_ops *pic_ops; 119 struct intrsource **pic_sources; 120 volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32]; 121 volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32]; 122 volatile uint32_t pic_pending_ipls; 123 size_t pic_maxsources; 124 percpu_t *pic_percpu; 125 uint8_t pic_id; 126 int16_t pic_irqbase; 127 char pic_name[14]; 128 }; 129 130 struct pic_ops { 131 void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t); 132 void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t); 133 int (*pic_find_pending_irqs)(struct pic_softc *); 134 135 void (*pic_establish_irq)(struct pic_softc *, struct intrsource *); 136 void (*pic_source_name)(struct pic_softc *, int, char *, size_t); 137 138 #ifdef __HAVE_PIC_SET_PRIORITY 139 void (*pic_set_priority)(struct pic_softc *, int); 140 #endif 141 #ifdef MULTIPROCESSOR 142 void (*pic_cpu_init)(struct pic_softc *, struct cpu_info *); 143 void (*pic_ipi_send)(struct pic_softc *, const kcpuset_t *, u_long); 144 #endif 145 }; 146 147 #ifdef __HAVE_PIC_SET_PRIORITY 148 /* 149 * This is used to update a hardware pic with a value corresponding 150 * to the ipl being set. 151 */ 152 struct cpu_info; 153 void pic_set_priority(struct cpu_info *, int); 154 #else 155 /* Using an inline causes catch-22 problems with cpu.h */ 156 #define pic_set_priority(ci, newipl) ((void)((ci)->ci_cpl = (newipl))) 157 #endif 158 159 void pic_add(struct pic_softc *, int); 160 void pic_do_pending_int(void); 161 #ifdef MULTIPROCESSOR 162 int pic_ipi_nop(void *); 163 int pic_ipi_xcall(void *); 164 int pic_ipi_generic(void *); 165 int pic_ipi_shootdown(void *); 166 int pic_ipi_ddb(void *); 167 #endif 168 #ifdef __HAVE_PIC_FAST_SOFTINTS 169 int pic_handle_softint(void *); 170 #endif 171 172 extern struct pic_softc * pic_list[PIC_MAXPICS]; 173 #endif /* _INTR_PRIVATE */ 174 175 #endif /* _ARM_PIC_PICVAR_H_ */ 176
Indexes created Mon Sep 29 21:09:56 GMT 2025