1 /* $OpenBSD: intr.h,v 1.18 2021/05/17 17:25:13 kettenis Exp $ */ 2 3 /* 4 * Copyright (c) 2001-2004 Opsycon AB (www.opsycon.se / www.opsycon.com) 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 ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 19 * 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 */ 28 29 #ifndef _MACHINE_INTR_H_ 30 #define _MACHINE_INTR_H_ 31 32 /* 33 * The interrupt level ipl is a logical level; per-platform interrupt 34 * code will turn it into the appropriate hardware interrupt masks 35 * values. 36 * 37 * Interrupt sources on the CPU are kept enabled regardless of the 38 * current ipl value; individual hardware sources interrupting while 39 * logically masked are masked on the fly, remembered as pending, and 40 * unmasked at the first splx() opportunity. 41 */ 42 #ifdef _KERNEL 43 44 /* Interrupt priority `levels'; not mutually exclusive. */ 45 #define IPL_NONE 0 /* nothing */ 46 #define IPL_SOFT 1 /* soft interrupts */ 47 #define IPL_SOFTCLOCK 2 /* soft clock interrupts */ 48 #define IPL_SOFTNET 3 /* soft network interrupts */ 49 #define IPL_SOFTTTY 4 /* soft terminal interrupts */ 50 #define IPL_BIO 5 /* block I/O */ 51 #define IPL_NET 6 /* network */ 52 #define IPL_TTY 7 /* terminal */ 53 #define IPL_VM 8 /* memory allocation */ 54 #define IPL_AUDIO 9 /* audio */ 55 #define IPL_CLOCK 10 /* clock */ 56 #define IPL_SCHED IPL_CLOCK 57 #define IPL_STATCLOCK IPL_CLOCK 58 #define IPL_HIGH 11 /* everything */ 59 #define IPL_IPI 12 /* interprocessor interrupt */ 60 #define NIPL 13 /* number of levels */ 61 62 #define IPL_MPFLOOR IPL_TTY 63 /* Interrupt priority 'flags'. */ 64 #define IPL_IRQMASK 0xf /* priority only */ 65 #define IPL_FLAGMASK 0xf00 /* flags only*/ 66 #define IPL_MPSAFE 0x100 /* 'mpsafe' interrupt, no kernel lock */ 67 68 /* Interrupt sharing types. */ 69 #define IST_NONE 0 /* none */ 70 #define IST_PULSE 1 /* pulsed */ 71 #define IST_EDGE 2 /* edge-triggered */ 72 #define IST_LEVEL 3 /* level-triggered */ 73 74 #define IST_LEVEL_LOW IST_LEVEL 75 #define IST_LEVEL_HIGH 4 76 #define IST_EDGE_FALLING IST_EDGE 77 #define IST_EDGE_RISING 5 78 #define IST_EDGE_BOTH 6 79 80 #ifndef _LOCORE 81 #include <sys/device.h> 82 #include <sys/queue.h> 83 84 int splraise(int); 85 int spllower(int); 86 void splx(int); 87 88 void arm_do_pending_intr(int); 89 void arm_set_intr_handler(int (*)(int), int (*)(int), void (*)(int), 90 void (*)(int), void (*)(void *), void (*)(void *)); 91 92 struct machine_intr_handle { 93 struct interrupt_controller *ih_ic; 94 void *ih_ih; 95 }; 96 97 struct arm_intr_func { 98 int (*raise)(int); 99 int (*lower)(int); 100 void (*x)(int); 101 void (*setipl)(int); 102 }; 103 104 extern struct arm_intr_func arm_intr_func; 105 106 #define splraise(cpl) (arm_intr_func.raise(cpl)) 107 #define _splraise(cpl) (arm_intr_func.raise(cpl)) 108 #define spllower(cpl) (arm_intr_func.lower(cpl)) 109 #define splx(cpl) (arm_intr_func.x(cpl)) 110 111 #define splsoft() splraise(IPL_SOFT) 112 #define splsoftclock() splraise(IPL_SOFTCLOCK) 113 #define splsoftnet() splraise(IPL_SOFTNET) 114 #define splsofttty() splraise(IPL_SOFTTTY) 115 #define splbio() splraise(IPL_BIO) 116 #define splnet() splraise(IPL_NET) 117 #define spltty() splraise(IPL_TTY) 118 #define splvm() splraise(IPL_VM) 119 #define splaudio() splraise(IPL_AUDIO) 120 #define splclock() splraise(IPL_CLOCK) 121 #define splsched() splraise(IPL_SCHED) 122 #define splstatclock() splraise(IPL_STATCLOCK) 123 #define splhigh() splraise(IPL_HIGH) 124 125 #define spl0() spllower(IPL_NONE) 126 127 void intr_barrier(void *); 128 129 void arm_init_smask(void); /* XXX */ 130 extern uint32_t arm_smask[NIPL]; 131 132 #include <machine/softintr.h> 133 134 /* XXX - this is probably the wrong location for this */ 135 void arm_clock_register(void (*)(void), void (*)(u_int), void (*)(int), 136 void (*)(void)); 137 138 struct cpu_info; 139 140 struct interrupt_controller { 141 int ic_node; 142 void *ic_cookie; 143 void *(*ic_establish)(void *, int *, int, struct cpu_info *, 144 int (*)(void *), void *, char *); 145 void *(*ic_establish_msi)(void *, uint64_t *, uint64_t *, int, 146 struct cpu_info *, int (*)(void *), void *, char *); 147 void (*ic_disestablish)(void *); 148 void (*ic_enable)(void *); 149 void (*ic_disable)(void *); 150 void (*ic_route)(void *, int, struct cpu_info *); 151 void (*ic_cpu_enable)(void); 152 void (*ic_barrier)(void *); 153 154 LIST_ENTRY(interrupt_controller) ic_list; 155 uint32_t ic_phandle; 156 uint32_t ic_cells; 157 }; 158 159 void arm_intr_init_fdt(void); 160 void arm_intr_register_fdt(struct interrupt_controller *); 161 void *arm_intr_establish_fdt(int, int, int (*)(void *), 162 void *, char *); 163 void *arm_intr_establish_fdt_cpu(int, int, struct cpu_info *, 164 int (*)(void *), void *, char *); 165 void *arm_intr_establish_fdt_idx(int, int, int, int (*)(void *), 166 void *, char *); 167 void *arm_intr_establish_fdt_idx_cpu(int, int, int, struct cpu_info *, 168 int (*)(void *), void *, char *); 169 void *arm_intr_establish_fdt_imap(int, int *, int, int, int (*)(void *), 170 void *, char *); 171 void *arm_intr_establish_fdt_imap_cpu(int, int *, int, int, 172 struct cpu_info *, int (*)(void *), void *, char *); 173 void *arm_intr_establish_fdt_msi(int, uint64_t *, uint64_t *, int, 174 int (*)(void *), void *, char *); 175 void *arm_intr_establish_fdt_msi_cpu(int, uint64_t *, uint64_t *, int, 176 struct cpu_info *, int (*)(void *), void *, char *); 177 void arm_intr_disestablish_fdt(void *); 178 void arm_intr_enable(void *); 179 void arm_intr_disable(void *); 180 void arm_intr_route(void *, int, struct cpu_info *); 181 void arm_intr_cpu_enable(void); 182 void *arm_intr_parent_establish_fdt(void *, int *, int, 183 struct cpu_info *ci, int (*)(void *), void *, char *); 184 void arm_intr_parent_disestablish_fdt(void *); 185 186 void arm_send_ipi(struct cpu_info *, int); 187 extern void (*intr_send_ipi_func)(struct cpu_info *, int); 188 189 #define ARM_IPI_NOP 0 190 #define ARM_IPI_DDB 1 191 192 #ifdef DIAGNOSTIC 193 /* 194 * Although this function is implemented in MI code, it must be in this MD 195 * header because we don't want this header to include MI includes. 196 */ 197 void splassert_fail(int, int, const char *); 198 extern int splassert_ctl; 199 void arm_splassert_check(int, const char *); 200 #define splassert(__wantipl) do { \ 201 if (splassert_ctl > 0) { \ 202 arm_splassert_check(__wantipl, __func__); \ 203 } \ 204 } while (0) 205 #define splsoftassert(wantipl) splassert(wantipl) 206 #else 207 #define splassert(wantipl) do { /* nothing */ } while (0) 208 #define splsoftassert(wantipl) do { /* nothing */ } while (0) 209 #endif 210 211 #endif /* ! _LOCORE */ 212 213 #endif /* _KERNEL */ 214 215 #endif /* _MACHINE_INTR_H_ */ 216 217