1 /* $NetBSD: picvar.h,v 1.16 2015/07/07 21:43:46 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 #ifdef _KERNEL_OPT 34 #include "opt_multiprocessor.h" 35 #endif 36 37 #ifdef MULTIPROCESSOR 38 #include <sys/kcpuset.h> 39 #endif 40 41 int _splraise(int); 42 int _spllower(int); 43 void splx(int); 44 const char * 45 intr_typename(int); 46 47 struct pic_softc; 48 struct intrsource; 49 struct cpu_info; 50 51 #define IPI_AST 0 /* just get an interrupt */ 52 #define IPI_XCALL 1 /* xcall */ 53 #define IPI_NOP 2 /* just get an interrupt (armv6) */ 54 #define IPI_SHOOTDOWN 3 /* cause a tlb shootdown */ 55 #define IPI_DDB 4 /* enter DDB */ 56 #define IPI_GENERIC 5 /* generic IPI */ 57 #ifdef __HAVE_PREEMPTION 58 #define IPI_KPREEMPT 6 /* cause a preemption */ 59 #define NIPI 7 60 #else 61 #define NIPI 6 62 #endif 63 64 #if !defined(__HAVE_PIC_SET_PRIORITY) 65 #define __HAVE_PIC_PENDING_INTRS 66 #endif 67 68 int pic_handle_intr(void *); 69 #if defined(__HAVE_PIC_PENDING_INTRS) 70 void pic_mark_pending(struct pic_softc *pic, int irq); 71 void pic_mark_pending_source(struct pic_softc *pic, struct intrsource *is); 72 uint32_t pic_mark_pending_sources(struct pic_softc *pic, size_t irq_base, 73 uint32_t pending); 74 #endif /* __HAVE_PIC_PENDING_INTRS */ 75 void *pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type, 76 int (*func)(void *), void *arg); 77 int pic_alloc_irq(struct pic_softc *pic); 78 void pic_disestablish_source(struct intrsource *is); 79 void pic_do_pending_ints(register_t psw, int newipl, void *frame); 80 void pic_dispatch(struct intrsource *is, void *frame); 81 82 void *intr_establish(int irq, int ipl, int type, int (*func)(void *), 83 void *arg); 84 void intr_disestablish(void *); 85 #ifdef MULTIPROCESSOR 86 void intr_cpu_init(struct cpu_info *); 87 void intr_ipi_send(const kcpuset_t *, u_long ipi); 88 #endif 89 90 #ifdef _INTR_PRIVATE 91 92 #include "opt_arm_intr_impl.h" 93 94 #include <sys/evcnt.h> 95 #include <sys/percpu.h> 96 97 #ifndef PIC_MAXPICS 98 #define PIC_MAXPICS 32 99 #endif 100 #ifndef PIC_MAXSOURCES 101 #define PIC_MAXSOURCES 64 102 #endif 103 #ifndef PIC_MAXMAXSOURCES 104 #define PIC_MAXMAXSOURCES 128 105 #endif 106 107 struct intrsource { 108 int (*is_func)(void *); 109 void *is_arg; 110 struct pic_softc *is_pic; /* owning PIC */ 111 uint8_t is_type; /* IST_xxx */ 112 uint8_t is_ipl; /* IPL_xxx */ 113 uint8_t is_irq; /* local to pic */ 114 uint8_t is_iplidx; 115 bool is_mpsafe; 116 char is_source[16]; 117 }; 118 119 struct pic_percpu { 120 struct evcnt *pcpu_evs; 121 char *pcpu_name; 122 uint32_t pcpu_magic; 123 }; 124 125 #define PICPERCPU_MAGIC 0xfeedface 126 127 struct pic_softc { 128 const struct pic_ops *pic_ops; 129 struct intrsource **pic_sources; 130 #ifdef __HAVE_PIC_PENDING_INTRS 131 volatile uint32_t pic_pending_irqs[(PIC_MAXSOURCES + 31) / 32]; 132 volatile uint32_t pic_blocked_irqs[(PIC_MAXSOURCES + 31) / 32]; 133 volatile uint32_t pic_pending_ipls; 134 #endif 135 #ifdef MULTIPROCESSOR 136 kcpuset_t *pic_cpus; 137 #endif 138 size_t pic_maxsources; 139 percpu_t *pic_percpu; 140 uint8_t pic_id; 141 int16_t pic_irqbase; 142 char pic_name[14]; 143 }; 144 145 struct pic_ops { 146 void (*pic_unblock_irqs)(struct pic_softc *, size_t, uint32_t); 147 void (*pic_block_irqs)(struct pic_softc *, size_t, uint32_t); 148 int (*pic_find_pending_irqs)(struct pic_softc *); 149 150 void (*pic_establish_irq)(struct pic_softc *, struct intrsource *); 151 void (*pic_source_name)(struct pic_softc *, int, char *, size_t); 152 153 #ifdef __HAVE_PIC_SET_PRIORITY 154 void (*pic_set_priority)(struct pic_softc *, int); 155 #endif 156 #ifdef MULTIPROCESSOR 157 void (*pic_cpu_init)(struct pic_softc *, struct cpu_info *); 158 void (*pic_ipi_send)(struct pic_softc *, const kcpuset_t *, u_long); 159 #endif 160 }; 161 162 #ifdef __HAVE_PIC_SET_PRIORITY 163 /* 164 * This is used to update a hardware pic with a value corresponding 165 * to the ipl being set. 166 */ 167 struct cpu_info; 168 void pic_set_priority(struct cpu_info *, int); 169 #else 170 /* Using an inline causes catch-22 problems with cpu.h */ 171 #define pic_set_priority(ci, newipl) ((void)((ci)->ci_cpl = (newipl))) 172 #endif 173 174 void pic_add(struct pic_softc *, int); 175 void pic_do_pending_int(void); 176 #ifdef MULTIPROCESSOR 177 int pic_ipi_ast(void *); 178 int pic_ipi_nop(void *); 179 int pic_ipi_xcall(void *); 180 int pic_ipi_generic(void *); 181 int pic_ipi_shootdown(void *); 182 int pic_ipi_ddb(void *); 183 int pic_ipi_kpreempt(void *); 184 #endif 185 #ifdef __HAVE_PIC_FAST_SOFTINTS 186 int pic_handle_softint(void *); 187 #endif 188 189 extern struct pic_softc * pic_list[PIC_MAXPICS]; 190 #endif /* _INTR_PRIVATE */ 191 192 #endif /* _ARM_PIC_PICVAR_H_ */ 193