1 /* $NetBSD: picvar.h,v 1.38 2022/06/25 13:24:35 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 47 const char * 48 intr_typename(int); 49 50 struct pic_softc; 51 struct intrsource; 52 struct cpu_info; 53 54 #define IPI_AST 0 /* just get an interrupt */ 55 #define IPI_XCALL 1 /* xcall */ 56 #define IPI_NOP 2 /* just get an interrupt (armv6) */ 57 #define IPI_SHOOTDOWN 3 /* cause a tlb shootdown */ 58 #define IPI_DDB 4 /* enter DDB */ 59 #define IPI_GENERIC 5 /* generic IPI */ 60 #ifdef __HAVE_PREEMPTION 61 #define IPI_KPREEMPT 6 /* cause a preemption */ 62 #define NIPI 7 63 #else 64 #define NIPI 6 65 #endif 66 67 #if !defined(__HAVE_PIC_SET_PRIORITY) 68 #define __HAVE_PIC_PENDING_INTRS 69 #endif 70 71 int pic_handle_intr(void *); 72 #if defined(__HAVE_PIC_PENDING_INTRS) 73 void pic_mark_pending(struct pic_softc *pic, int irq); 74 void pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is); 75 uint32_t pic_mark_pending_sources(struct pic_softc *pic, size_t irq_base, 76 uint32_t pending); 77 #endif /* __HAVE_PIC_PENDING_INTRS */ 78 void *pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type, 79 int (*func)(void *), void *arg, const char *); 80 int pic_alloc_irq(struct pic_softc *pic); 81 void pic_disestablish_source(struct intrsource *is); 82 #ifdef MULTIPROCESSOR 83 void pic_distribute_source(struct intrsource *is, const kcpuset_t *, 84 kcpuset_t *); 85 #endif 86 void pic_do_pending_ints(register_t psw, int newipl, void *frame); 87 void pic_dispatch(struct intrsource *is, void *frame); 88 89 void *intr_establish(int irq, int ipl, int type, int (*func)(void *), 90 void *arg); 91 void *intr_establish_xname(int irq, int ipl, int type, int (*func)(void *), 92 void *arg, const char *xname); 93 void intr_disestablish(void *); 94 void intr_mask(void *); 95 void intr_unmask(void *); 96 const char *intr_string(intr_handle_t, char *, size_t); 97 #ifdef MULTIPROCESSOR 98 void intr_cpu_init(struct cpu_info *); 99 void intr_ipi_send(const kcpuset_t *, u_long ipi); 100 #endif 101 102 #ifdef _INTR_PRIVATE 103 104 #include "opt_arm_intr_impl.h" 105 106 #include <sys/evcnt.h> 107 #include <sys/percpu.h> 108 109 #ifndef PIC_MAXPICS 110 #define PIC_MAXPICS 32 111 #endif 112 #ifndef PIC_MAXSOURCES 113 #define PIC_MAXSOURCES 64 114 #endif 115 #ifndef PIC_MAXMAXSOURCES 116 #define PIC_MAXMAXSOURCES 128 117 #endif 118 119 struct intrsource { 120 int (*is_func)(void *); 121 void *is_arg; 122 struct pic_softc *is_pic; /* owning PIC */ 123 uint8_t is_type; /* IST_xxx */ 124 uint8_t is_ipl; /* IPL_xxx */ 125 uint32_t is_irq; /* local to pic */ 126 uint8_t is_iplidx; 127 bool is_mpsafe; 128 char is_source[16]; 129 char *is_xname; 130 uint32_t is_mask_count; 131 bool is_percpu; 132 }; 133 134 struct pic_percpu { 135 struct evcnt *pcpu_evs; 136 char *pcpu_name; 137 uint32_t pcpu_magic; 138 }; 139 140 #define PICPERCPU_MAGIC 0xfeedface 141 142 struct pic_softc { 143 const struct pic_ops *pic_ops; 144 struct intrsource **pic_sources; 145 #ifdef __HAVE_PIC_PENDING_INTRS 146 volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32]; 147 volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32]; 148 volatile uint32_t pic_pending_ipls; 149 #endif 150 #ifdef MULTIPROCESSOR 151 kcpuset_t *pic_cpus; 152 #endif 153 size_t pic_maxsources; 154 percpu_t *pic_percpu; 155 uint8_t pic_id; 156 int pic_irqbase; 157 char pic_name[16]; 158 }; 159 160 struct pic_ops { 161 void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t); 162 void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t); 163 int (*pic_find_pending_irqs)(struct pic_softc *); 164 165 void (*pic_establish_irq)(struct pic_softc *, struct intrsource *); 166 void (*pic_source_name)(struct pic_softc *, int, char *, size_t); 167 168 #ifdef __HAVE_PIC_SET_PRIORITY 169 void (*pic_set_priority)(struct pic_softc *, int); 170 #endif 171 #ifdef MULTIPROCESSOR 172 void (*pic_cpu_init)(struct pic_softc *, struct cpu_info *); 173 void (*pic_ipi_send)(struct pic_softc *, const kcpuset_t *, u_long); 174 int (*pic_set_affinity)(struct pic_softc *, size_t, const kcpuset_t *); 175 void (*pic_get_affinity)(struct pic_softc *, size_t, kcpuset_t *); 176 #endif 177 }; 178 179 #ifdef __HAVE_PIC_SET_PRIORITY 180 /* 181 * This is used to update a hardware pic with a value corresponding 182 * to the ipl being set. 183 */ 184 struct cpu_info; 185 void pic_set_priority(struct cpu_info *, int); 186 #else 187 /* Using an inline causes catch-22 problems with cpu.h */ 188 #define pic_set_priority(ci, newipl) ((void)((ci)->ci_cpl = (newipl))) 189 #endif 190 191 #define PIC_IRQBASE_ALLOC (-2) 192 193 int pic_add(struct pic_softc *, int); 194 void pic_do_pending_int(void); 195 #ifdef MULTIPROCESSOR 196 int pic_ipi_ast(void *); 197 int pic_ipi_nop(void *); 198 int pic_ipi_xcall(void *); 199 int pic_ipi_generic(void *); 200 int pic_ipi_shootdown(void *); 201 int pic_ipi_ddb(void *); 202 int pic_ipi_kpreempt(void *); 203 #endif 204 #ifdef __HAVE_PIC_FAST_SOFTINTS 205 int pic_handle_softint(void *); 206 #endif 207 208 extern struct pic_softc * pic_list[PIC_MAXPICS]; 209 #endif /* _INTR_PRIVATE */ 210 211 #endif /* _ARM_PIC_PICVAR_H_ */ 212
Indexes created Sat Sep 20 22:09:52 GMT 2025