1 /* $OpenBSD: intr.h,v 1.14 2021/05/30 15:06:53 visa Exp $ */ 2 3 /* 4 * Copyright (c) 2020 Mark Kettenis <kettenis@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #ifndef _MACHINE_INTR_H_ 20 #define _MACHINE_INTR_H_ 21 22 #include <sys/queue.h> 23 24 struct cpu_info; 25 struct trapframe; 26 27 #define IPL_NONE 0 28 #define IPL_SOFT 1 29 #define IPL_SOFTCLOCK 2 30 #define IPL_SOFTNET 3 31 #define IPL_SOFTTTY 4 32 #define IPL_BIO 5 33 #define IPL_NET 6 34 #define IPL_TTY 7 35 #define IPL_VM IPL_TTY 36 #define IPL_AUDIO 8 37 #define IPL_CLOCK 9 38 #define IPL_STATCLOCK IPL_CLOCK 39 #define IPL_SCHED IPL_CLOCK 40 #define IPL_HIGH IPL_CLOCK 41 #define IPL_IPI 10 42 #define NIPL 11 43 44 #define IPL_MPFLOOR IPL_TTY 45 /* Interrupt priority 'flags'. */ 46 #define IPL_IRQMASK 0xf /* priority only */ 47 #define IPL_FLAGMASK 0xf00 /* flags only*/ 48 #define IPL_MPSAFE 0x100 /* 'mpsafe' interrupt, no kernel lock */ 49 50 int splraise(int); 51 int spllower(int); 52 void splx(int); 53 54 #define spl0() spllower(IPL_NONE) 55 #define splsoftclock() splraise(IPL_SOFTCLOCK) 56 #define splsoftnet() splraise(IPL_SOFTNET) 57 #define splsofttty() splraise(IPL_SOFTTTY) 58 #define splbio() splraise(IPL_BIO) 59 #define splnet() splraise(IPL_NET) 60 #define spltty() splraise(IPL_TTY) 61 #define splvm() splraise(IPL_VM) 62 #define splclock() splraise(IPL_CLOCK) 63 #define splstatclock() splraise(IPL_STATCLOCK) 64 #define splsched() splraise(IPL_SCHED) 65 #define splhigh() splraise(IPL_HIGH) 66 67 #ifdef DIAGNOSTIC 68 /* 69 * Although this function is implemented in MI code, it must be in this MD 70 * header because we don't want this header to include MI includes. 71 */ 72 void splassert_fail(int, int, const char *); 73 extern int splassert_ctl; 74 void splassert_check(int, const char *); 75 #define splassert(__wantipl) do { \ 76 if (splassert_ctl > 0) { \ 77 splassert_check(__wantipl, __func__); \ 78 } \ 79 } while (0) 80 #define splsoftassert(wantipl) splassert(wantipl) 81 #else 82 #define splassert(wantipl) do { /* nothing */ } while (0) 83 #define splsoftassert(wantipl) do { /* nothing */ } while (0) 84 #endif 85 86 void intr_init(void); 87 88 #define intr_barrier(x) 89 90 #define IST_EDGE 0 91 #define IST_LEVEL 1 92 93 void *intr_establish(uint32_t, int, int, struct cpu_info *, 94 int (*)(void *), void *, const char *); 95 96 #define IPI_NOP 0 97 #define IPI_DDB (1 << 0) 98 #define IPI_SETPERF (1 << 1) 99 100 void intr_send_ipi(struct cpu_info *, int); 101 102 extern void (*_exi)(struct trapframe *); 103 extern void (*_hvi)(struct trapframe *); 104 extern void *(*_intr_establish)(uint32_t, int, int, struct cpu_info *, 105 int (*)(void *), void *, const char *); 106 extern void (*_intr_send_ipi)(void *); 107 extern void (*_setipl)(int); 108 109 #include <machine/softintr.h> 110 111 struct interrupt_controller { 112 int ic_node; 113 void *ic_cookie; 114 void *(*ic_establish)(void *, int *, int, struct cpu_info *, 115 int (*)(void *), void *, char *); 116 void (*ic_send_ipi)(void *); 117 118 LIST_ENTRY(interrupt_controller) ic_list; 119 uint32_t ic_phandle; 120 uint32_t ic_cells; 121 }; 122 123 void interrupt_controller_register(struct interrupt_controller *); 124 125 void *fdt_intr_establish_idx_cpu(int, int, int, struct cpu_info *, 126 int (*)(void *), void *, char *); 127 void *fdt_intr_establish_imap(int, int *, int, int, int (*)(void *), 128 void *, char *); 129 void *fdt_intr_establish_imap_cpu(int, int *, int, int, 130 struct cpu_info *, int (*)(void *), void *, char *); 131 132 #endif /* _MACHINE_INTR_H_ */ 133