picvar.h revision 1.20
1 /* $NetBSD: picvar.h,v 1.20 2018/10/12 21:46:32 jmcneill 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 _KERNEL_OPT 34 #include "opt_multiprocessor.h" 35 #endif 36 37 #ifdef MULTIPROCESSOR 38 #include <sys/kcpuset.h> 39 #endif 40 41 typedef uint32_t intr_handle_t; /* for ACPI */ 42 43 int _splraise(int); 44 int _spllower(int); 45 void splx(int); 46 const char * 47 intr_typename(int); 48 49 struct pic_softc; 50 struct intrsource; 51 struct cpu_info; 52 53 #define IPI_AST 0 /* just get an interrupt */ 54 #define IPI_XCALL 1 /* xcall */ 55 #define IPI_NOP 2 /* just get an interrupt (armv6) */ 56 #define IPI_SHOOTDOWN 3 /* cause a tlb shootdown */ 57 #define IPI_DDB 4 /* enter DDB */ 58 #define IPI_GENERIC 5 /* generic IPI */ 59 #ifdef __HAVE_PREEMPTION 60 #define IPI_KPREEMPT 6 /* cause a preemption */ 61 #define NIPI 7 62 #else 63 #define NIPI 6 64 #endif 65 66 #if !defined(__HAVE_PIC_SET_PRIORITY) 67 #define __HAVE_PIC_PENDING_INTRS 68 #endif 69 70 int pic_handle_intr(void *); 71 #if defined(__HAVE_PIC_PENDING_INTRS) 72 void pic_mark_pending(struct pic_softc *pic, int irq); 73 void pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is); 74 uint32_t pic_mark_pending_sources(struct pic_softc *pic, size_t irq_base, 75 uint32_t pending); 76 #endif /* __HAVE_PIC_PENDING_INTRS */ 77 void *pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type, 78 int (*func)(void *), void *arg); 79 int pic_alloc_irq(struct pic_softc *pic); 80 void pic_disestablish_source(struct intrsource *is); 81 #ifdef MULTIPROCESSOR 82 void pic_distribute_source(struct intrsource *is, const kcpuset_t *, 83 kcpuset_t *); 84 #endif 85 void pic_do_pending_ints(register_t psw, int newipl, void *frame); 86 void pic_dispatch(struct intrsource *is, void *frame); 87 88 void *intr_establish(int irq, int ipl, int type, int (*func)(void *), 89 void *arg); 90 void intr_disestablish(void *); 91 const char *intr_string(intr_handle_t, char *, size_t); 92 #ifdef MULTIPROCESSOR 93 void intr_cpu_init(struct cpu_info *); 94 void intr_ipi_send(const kcpuset_t *, u_long ipi); 95 #endif 96 97 #ifdef _INTR_PRIVATE 98 99 #include "opt_arm_intr_impl.h" 100 101 #include <sys/evcnt.h> 102 #include <sys/percpu.h> 103 104 #ifndef PIC_MAXPICS 105 #define PIC_MAXPICS 32 106 #endif 107 #ifndef PIC_MAXSOURCES 108 #define PIC_MAXSOURCES 64 109 #endif 110 #ifndef PIC_MAXMAXSOURCES 111 #define PIC_MAXMAXSOURCES 128 112 #endif 113 114 struct intrsource { 115 int (*is_func)(void *); 116 void *is_arg; 117 struct pic_softc *is_pic; /* owning PIC */ 118 uint8_t is_type; /* IST_xxx */ 119 uint8_t is_ipl; /* IPL_xxx */ 120 uint16_t is_irq; /* local to pic */ 121 uint8_t is_iplidx; 122 bool is_mpsafe; 123 char is_source[16]; 124 }; 125 126 struct pic_percpu { 127 struct evcnt *pcpu_evs; 128 char *pcpu_name; 129 uint32_t pcpu_magic; 130 }; 131 132 #define PICPERCPU_MAGIC 0xfeedface 133 134 struct pic_softc { 135 const struct pic_ops *pic_ops; 136 struct intrsource **pic_sources; 137 #ifdef __HAVE_PIC_PENDING_INTRS 138 volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32]; 139 volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32]; 140 volatile uint32_t pic_pending_ipls; 141 #endif 142 #ifdef MULTIPROCESSOR 143 kcpuset_t *pic_cpus; 144 #endif 145 size_t pic_maxsources; 146 percpu_t *pic_percpu; 147 uint8_t pic_id; 148 int16_t pic_irqbase; 149 char pic_name[14]; 150 }; 151 152 struct pic_ops { 153 void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t); 154 void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t); 155 int (*pic_find_pending_irqs)(struct pic_softc *); 156 157 void (*pic_establish_irq)(struct pic_softc *, struct intrsource *); 158 void (*pic_source_name)(struct pic_softc *, int, char *, size_t); 159 160 #ifdef __HAVE_PIC_SET_PRIORITY 161 void (*pic_set_priority)(struct pic_softc *, int); 162 #endif 163 #ifdef MULTIPROCESSOR 164 void (*pic_cpu_init)(struct pic_softc *, struct cpu_info *); 165 void (*pic_ipi_send)(struct pic_softc *, const kcpuset_t *, u_long); 166 int (*pic_set_affinity)(struct pic_softc *, size_t, const kcpuset_t *); 167 void (*pic_get_affinity)(struct pic_softc *, size_t, kcpuset_t *); 168 #endif 169 }; 170 171 #ifdef __HAVE_PIC_SET_PRIORITY 172 /* 173 * This is used to update a hardware pic with a value corresponding 174 * to the ipl being set. 175 */ 176 struct cpu_info; 177 void pic_set_priority(struct cpu_info *, int); 178 #else 179 /* Using an inline causes catch-22 problems with cpu.h */ 180 #define pic_set_priority(ci, newipl) ((void)((ci)->ci_cpl = (newipl))) 181 #endif 182 183 void pic_add(struct pic_softc *, int); 184 void pic_do_pending_int(void); 185 #ifdef MULTIPROCESSOR 186 int pic_ipi_ast(void *); 187 int pic_ipi_nop(void *); 188 int pic_ipi_xcall(void *); 189 int pic_ipi_generic(void *); 190 int pic_ipi_shootdown(void *); 191 int pic_ipi_ddb(void *); 192 int pic_ipi_kpreempt(void *); 193 #endif 194 #ifdef __HAVE_PIC_FAST_SOFTINTS 195 int pic_handle_softint(void *); 196 #endif 197 198 extern struct pic_softc * pic_list[PIC_MAXPICS]; 199 #endif /* _INTR_PRIVATE */ 200 201 #endif /* _ARM_PIC_PICVAR_H_ */ 202
Indexes created Mon Sep 29 21:09:56 GMT 2025