picvar.h revision 1.26
1 /* $NetBSD: picvar.h,v 1.26 2019/12/24 20:40:09 skrll 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, const char *); 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_establish_xname(int irq, int ipl, int type, int (*func)(void *), 91 void *arg, const char *xname); 92 void intr_disestablish(void *); 93 void intr_mask(void *); 94 void intr_unmask(void *); 95 const char *intr_string(intr_handle_t, char *, size_t); 96 #ifdef MULTIPROCESSOR 97 void intr_cpu_init(struct cpu_info *); 98 void intr_ipi_send(const kcpuset_t *, u_long ipi); 99 #endif 100 101 #ifdef _INTR_PRIVATE 102 103 #include "opt_arm_intr_impl.h" 104 105 #include <sys/evcnt.h> 106 #include <sys/percpu.h> 107 108 #ifndef PIC_MAXPICS 109 #define PIC_MAXPICS 32 110 #endif 111 #ifndef PIC_MAXSOURCES 112 #define PIC_MAXSOURCES 64 113 #endif 114 #ifndef PIC_MAXMAXSOURCES 115 #define PIC_MAXMAXSOURCES 128 116 #endif 117 118 struct intrsource { 119 int (*is_func)(void *); 120 void *is_arg; 121 struct pic_softc *is_pic; /* owning PIC */ 122 uint8_t is_type; /* IST_xxx */ 123 uint8_t is_ipl; /* IPL_xxx */ 124 uint32_t is_irq; /* local to pic */ 125 uint8_t is_iplidx; 126 bool is_mpsafe; 127 char is_source[16]; 128 char *is_xname; 129 uint32_t is_mask_count; 130 }; 131 132 struct pic_percpu { 133 struct evcnt *pcpu_evs; 134 char *pcpu_name; 135 uint32_t pcpu_magic; 136 }; 137 138 #define PICPERCPU_MAGIC 0xfeedface 139 140 struct pic_softc { 141 const struct pic_ops *pic_ops; 142 struct intrsource **pic_sources; 143 #ifdef __HAVE_PIC_PENDING_INTRS 144 volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32]; 145 volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32]; 146 volatile uint32_t pic_pending_ipls; 147 #endif 148 #ifdef MULTIPROCESSOR 149 kcpuset_t *pic_cpus; 150 #endif 151 size_t pic_maxsources; 152 percpu_t *pic_percpu; 153 uint8_t pic_id; 154 int pic_irqbase; 155 char pic_name[16]; 156 }; 157 158 struct pic_ops { 159 void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t); 160 void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t); 161 int (*pic_find_pending_irqs)(struct pic_softc *); 162 163 void (*pic_establish_irq)(struct pic_softc *, struct intrsource *); 164 void (*pic_source_name)(struct pic_softc *, int, char *, size_t); 165 166 #ifdef __HAVE_PIC_SET_PRIORITY 167 void (*pic_set_priority)(struct pic_softc *, int); 168 #endif 169 #ifdef MULTIPROCESSOR 170 void (*pic_cpu_init)(struct pic_softc *, struct cpu_info *); 171 void (*pic_ipi_send)(struct pic_softc *, const kcpuset_t *, u_long); 172 int (*pic_set_affinity)(struct pic_softc *, size_t, const kcpuset_t *); 173 void (*pic_get_affinity)(struct pic_softc *, size_t, kcpuset_t *); 174 #endif 175 }; 176 177 #ifdef __HAVE_PIC_SET_PRIORITY 178 /* 179 * This is used to update a hardware pic with a value corresponding 180 * to the ipl being set. 181 */ 182 struct cpu_info; 183 void pic_set_priority(struct cpu_info *, int); 184 #else 185 /* Using an inline causes catch-22 problems with cpu.h */ 186 #define pic_set_priority(ci, newipl) ((void)((ci)->ci_cpl = (newipl))) 187 #endif 188 189 #define PIC_IRQBASE_ALLOC (-2) 190 191 int pic_add(struct pic_softc *, int); 192 void pic_do_pending_int(void); 193 #ifdef MULTIPROCESSOR 194 int pic_ipi_ast(void *); 195 int pic_ipi_nop(void *); 196 int pic_ipi_xcall(void *); 197 int pic_ipi_generic(void *); 198 int pic_ipi_shootdown(void *); 199 int pic_ipi_ddb(void *); 200 int pic_ipi_kpreempt(void *); 201 #endif 202 #ifdef __HAVE_PIC_FAST_SOFTINTS 203 int pic_handle_softint(void *); 204 #endif 205 206 extern struct pic_softc * pic_list[PIC_MAXPICS]; 207 #endif /* _INTR_PRIVATE */ 208 209 #endif /* _ARM_PIC_PICVAR_H_ */ 210
Indexes created Tue Sep 30 11:09:46 GMT 2025