1 /*- 2 * Copyright (c) 2015-2016 Svatopluk Kraus 3 * Copyright (c) 2015-2016 Michal Meloun 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _SYS_INTR_H_ 31 #define _SYS_INTR_H_ 32 #ifndef INTRNG 33 #error Need INTRNG for this file 34 #endif 35 36 #include <sys/systm.h> 37 38 #define INTR_IRQ_INVALID 0xFFFFFFFF 39 40 enum intr_map_data_type { 41 INTR_MAP_DATA_ACPI = 0, 42 INTR_MAP_DATA_FDT, 43 INTR_MAP_DATA_GPIO, 44 INTR_MAP_DATA_MSI, 45 46 /* Placeholders for platform specific types */ 47 INTR_MAP_DATA_PLAT_1 = 1000, 48 INTR_MAP_DATA_PLAT_2, 49 INTR_MAP_DATA_PLAT_3, 50 INTR_MAP_DATA_PLAT_4, 51 INTR_MAP_DATA_PLAT_5, 52 }; 53 54 struct intr_map_data { 55 size_t len; 56 enum intr_map_data_type type; 57 }; 58 59 struct intr_map_data_msi { 60 struct intr_map_data hdr; 61 struct intr_irqsrc *isrc; 62 }; 63 64 #ifdef notyet 65 #define INTR_SOLO INTR_MD1 66 typedef int intr_irq_filter_t(void *arg, struct trapframe *tf); 67 #else 68 typedef int intr_irq_filter_t(void *arg); 69 #endif 70 typedef int intr_child_irq_filter_t(void *arg, uintptr_t irq); 71 72 #define INTR_ISRC_NAMELEN (MAXCOMLEN + 1) 73 74 #define INTR_ISRCF_IPI 0x01 /* IPI interrupt */ 75 #define INTR_ISRCF_PPI 0x02 /* PPI interrupt */ 76 #define INTR_ISRCF_BOUND 0x04 /* bound to a CPU */ 77 78 struct intr_pic; 79 80 /* Interrupt source definition. */ 81 struct intr_irqsrc { 82 device_t isrc_dev; /* where isrc is mapped */ 83 u_int isrc_irq; /* unique identificator */ 84 u_int isrc_flags; 85 char isrc_name[INTR_ISRC_NAMELEN]; 86 cpuset_t isrc_cpu; /* on which CPUs is enabled */ 87 u_int isrc_index; 88 u_long * isrc_count; 89 u_int isrc_handlers; 90 struct intr_event * isrc_event; 91 #ifdef INTR_SOLO 92 intr_irq_filter_t * isrc_filter; 93 void * isrc_arg; 94 #endif 95 }; 96 97 /* Intr interface for PIC. */ 98 int intr_isrc_deregister(struct intr_irqsrc *); 99 int intr_isrc_register(struct intr_irqsrc *, device_t, u_int, const char *, ...) 100 __printflike(4, 5); 101 102 #ifdef SMP 103 bool intr_isrc_init_on_cpu(struct intr_irqsrc *isrc, u_int cpu); 104 #endif 105 106 int intr_isrc_dispatch(struct intr_irqsrc *, struct trapframe *); 107 u_int intr_irq_next_cpu(u_int current_cpu, cpuset_t *cpumask); 108 109 struct intr_pic *intr_pic_register(device_t, intptr_t); 110 int intr_pic_deregister(device_t, intptr_t); 111 int intr_pic_claim_root(device_t, intptr_t, intr_irq_filter_t *, void *, u_int); 112 struct intr_pic *intr_pic_add_handler(device_t, struct intr_pic *, 113 intr_child_irq_filter_t *, void *, uintptr_t, uintptr_t); 114 115 extern device_t intr_irq_root_dev; 116 117 /* Intr interface for BUS. */ 118 119 int intr_activate_irq(device_t, struct resource *); 120 int intr_deactivate_irq(device_t, struct resource *); 121 122 int intr_setup_irq(device_t, struct resource *, driver_filter_t, driver_intr_t, 123 void *, int, void **); 124 int intr_teardown_irq(device_t, struct resource *, void *); 125 126 int intr_describe_irq(device_t, struct resource *, void *, const char *); 127 int intr_child_irq_handler(struct intr_pic *, uintptr_t); 128 129 /* Intr resources mapping. */ 130 struct intr_map_data *intr_alloc_map_data(enum intr_map_data_type, size_t, int); 131 void intr_free_intr_map_data(struct intr_map_data *); 132 u_int intr_map_irq(device_t, intptr_t, struct intr_map_data *); 133 void intr_unmap_irq(u_int ); 134 u_int intr_map_clone_irq(u_int ); 135 136 /* MSI/MSI-X handling */ 137 int intr_msi_register(device_t, intptr_t); 138 int intr_alloc_msi(device_t, device_t, intptr_t, int, int, int *); 139 int intr_release_msi(device_t, device_t, intptr_t, int, int *); 140 int intr_map_msi(device_t, device_t, intptr_t, int, uint64_t *, uint32_t *); 141 int intr_alloc_msix(device_t, device_t, intptr_t, int *); 142 int intr_release_msix(device_t, device_t, intptr_t, int); 143 144 #ifdef SMP 145 int intr_bind_irq(device_t, struct resource *, int); 146 147 void intr_pic_init_secondary(void); 148 149 /* Virtualization for interrupt source IPI counter increment. */ 150 static inline void 151 intr_ipi_increment_count(u_long *counter, u_int cpu) 152 { 153 154 KASSERT(cpu < MAXCPU, ("%s: too big cpu %u", __func__, cpu)); 155 counter[cpu]++; 156 } 157 158 /* Virtualization for interrupt source IPI counters setup. */ 159 u_long * intr_ipi_setup_counters(const char *name); 160 161 #endif 162 #endif /* _SYS_INTR_H */ 163