1 /* $OpenBSD: intr.h,v 1.20 2019/03/21 16:51:21 visa 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 * An exception to this rule is the clock interrupt. Clock interrupts 43 * are always allowed to happen, but will (of course!) not be serviced 44 * if logically masked. The reason for this is that clocks usually sit on 45 * INT5 and cannot be easily masked if external hardware masking is used. 46 */ 47 48 /* Interrupt priority `levels'; not mutually exclusive. */ 49 #define IPL_NONE 0 /* nothing */ 50 #define IPL_SOFTINT 1 /* soft interrupts */ 51 #define IPL_BIO 2 /* block I/O */ 52 #define IPL_AUDIO IPL_BIO 53 #define IPL_NET 3 /* network */ 54 #define IPL_TTY 4 /* terminal */ 55 #define IPL_VM 5 /* memory allocation */ 56 #define IPL_CLOCK 6 /* clock */ 57 #define IPL_SCHED IPL_CLOCK 58 #define IPL_HIGH 7 /* everything */ 59 #define IPL_IPI 8 /* interprocessor interrupt */ 60 #define NIPLS 9 /* Number of levels */ 61 62 #define IPL_MPFLOOR IPL_TTY 63 64 /* Interrupt priority 'flags'. */ 65 #define IPL_MPSAFE 0x100 66 67 /* Interrupt sharing types. */ 68 #define IST_NONE 0 /* none */ 69 #define IST_PULSE 1 /* pulsed */ 70 #define IST_EDGE 2 /* edge-triggered */ 71 #define IST_LEVEL 3 /* level-triggered */ 72 73 #define SINTBIT(q) (q) 74 #define SINTMASK(q) (1 << SINTBIT(q)) 75 76 /* Soft interrupt masks. */ 77 78 #define IPL_SOFT 0 79 #define IPL_SOFTCLOCK 1 80 #define IPL_SOFTNET 2 81 #define IPL_SOFTTTY 3 82 83 #define SI_SOFT 0 /* for IPL_SOFT */ 84 #define SI_SOFTCLOCK 1 /* for IPL_SOFTCLOCK */ 85 #define SI_SOFTNET 2 /* for IPL_SOFTNET */ 86 #define SI_SOFTTTY 3 /* for IPL_SOFTTTY */ 87 88 #define SI_NQUEUES 4 89 90 #ifndef _LOCORE 91 92 #include <sys/mutex.h> 93 #include <sys/queue.h> 94 95 struct soft_intrhand { 96 TAILQ_ENTRY(soft_intrhand) sih_list; 97 void (*sih_func)(void *); 98 void *sih_arg; 99 struct soft_intrq *sih_siq; 100 int sih_pending; 101 }; 102 103 struct soft_intrq { 104 TAILQ_HEAD(, soft_intrhand) siq_list; 105 int siq_si; 106 struct mutex siq_mtx; 107 }; 108 109 void softintr_disestablish(void *); 110 void softintr_dispatch(int); 111 void *softintr_establish(int, void (*)(void *), void *); 112 void softintr_init(void); 113 void softintr_schedule(void *); 114 115 #define splsoft() splraise(IPL_SOFTINT) 116 #define splbio() splraise(IPL_BIO) 117 #define splnet() splraise(IPL_NET) 118 #define spltty() splraise(IPL_TTY) 119 #define splaudio() splraise(IPL_AUDIO) 120 #define splvm() splraise(IPL_VM) 121 #define splclock() splraise(IPL_CLOCK) 122 #define splsched() splraise(IPL_SCHED) 123 #define splhigh() splraise(IPL_HIGH) 124 125 #define splsoftclock() splsoft() 126 #define splsoftnet() splsoft() 127 #define splstatclock() splhigh() 128 129 #define spl0() spllower(0) 130 131 void splinit(void); 132 133 #define splassert(X) 134 #define splsoftassert(X) 135 136 void register_splx_handler(void (*)(int)); 137 int splraise(int); 138 void splx(int); 139 int spllower(int); 140 141 void intr_barrier(void *); 142 143 /* 144 * Low level interrupt dispatcher registration data. 145 */ 146 147 /* Schedule priorities for base interrupts (CPU) */ 148 #define INTPRI_IPI 0 149 #define INTPRI_CLOCK 1 150 /* other values are system-specific */ 151 152 #define NLOWINT 16 /* Number of low level registrations possible */ 153 154 extern uint32_t idle_mask; 155 156 struct trapframe; 157 void set_intr(int, uint32_t, uint32_t(*)(uint32_t, struct trapframe *)); 158 159 uint32_t updateimask(uint32_t); 160 void dosoftint(void); 161 162 struct intr_controller { 163 void *ic_cookie; 164 void (*ic_init)(void); 165 void *(*ic_establish)(int, int, int (*)(void *), void *, 166 const char *); 167 void *(*ic_establish_fdt_idx)(void *, int, int, int, 168 int (*)(void *), void *, const char *); 169 void (*ic_disestablish)(void *); 170 void (*ic_intr_barrier)(void *); 171 172 #ifdef MULTIPROCESSOR 173 int (*ic_ipi_establish)(int (*)(void *), cpuid_t); 174 void (*ic_ipi_set)(cpuid_t); 175 void (*ic_ipi_clear)(cpuid_t); 176 #endif /* MULTIPROCESSOR */ 177 178 int ic_node; 179 int ic_phandle; 180 LIST_ENTRY(intr_controller) ic_list; 181 }; 182 183 #ifdef MULTIPROCESSOR 184 #define ENABLEIPI() updateimask(~CR_INT_1) /* enable IPI interrupt level */ 185 #endif 186 187 void *octeon_intr_establish(int, int, int (*)(void *), 188 void *, const char *); 189 void octeon_intr_disestablish(void *); 190 void octeon_intr_init(void); 191 void octeon_intr_register(struct intr_controller *); 192 193 void *octeon_intr_establish_fdt(int, int, int (*)(void *), 194 void *, const char *); 195 void *octeon_intr_establish_fdt_idx(int, int, int, int (*)(void *), 196 void *, const char *); 197 void octeon_intr_disestablish_fdt(void *); 198 199 #endif /* _LOCORE */ 200 201 #endif /* _MACHINE_INTR_H_ */ 202