1 /* $NetBSD: intr.h,v 1.19 2022/07/11 09:39:10 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _LOCORE 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: intr.h,v 1.19 2022/07/11 09:39:10 martin Exp $"); 32 #endif 33 34 #ifndef _POWERPC_INTR_MACHDEP_H_ 35 #define _POWERPC_INTR_MACHDEP_H_ 36 37 #if 0 /* PR port-powerpc/56922: fast softints are broken on powerpc */ 38 #define __HAVE_FAST_SOFTINTS 1 39 #endif 40 41 42 /* Interrupt priority `levels'. */ 43 #define IPL_NONE 0 /* nothing */ 44 #define IPL_SOFTCLOCK 1 /* timeouts */ 45 #define IPL_SOFTBIO 2 /* block I/O */ 46 #define IPL_SOFTNET 3 /* protocol stacks */ 47 #define IPL_SOFTSERIAL 4 /* serial */ 48 #define IPL_VM 5 /* memory allocation */ 49 #define IPL_SCHED 6 50 #define IPL_HIGH 7 /* everything */ 51 #define NIPL 8 52 53 /* Interrupt sharing types. */ 54 #define IST_NONE 0 /* none */ 55 #define IST_PULSE 1 /* pulsed */ 56 #define IST_EDGE 2 /* falling edge triggered */ 57 #define IST_LEVEL 3 /* low level triggered */ 58 59 #define IST_EDGE_FALLING IST_EDGE 60 #define IST_EDGE_RISING 4 /* rising edge triggered */ 61 #define IST_LEVEL_LOW IST_LEVEL 62 #define IST_LEVEL_HIGH 5 /* high level triggered */ 63 64 #if !defined(_LOCORE) 65 void * intr_establish(int, int, int, int (*)(void *), void *); 66 void * intr_establish_xname(int, int, int, int (*)(void *), void *, 67 const char *); 68 void intr_disestablish(void *); 69 const char * 70 intr_typename(int); 71 72 int splraise(int); 73 int spllower(int); 74 void splx(int); 75 76 #if !defined(_MODULE) 77 78 #include <powerpc/softint.h> 79 80 void genppc_cpu_configure(void); 81 82 /* 83 * Interrupt handler chains. intr_establish() inserts a handler into 84 * the list. The handler is called with its (single) argument. 85 */ 86 struct intrhand { 87 int (*ih_fun)(void *); 88 void *ih_arg; 89 struct intrhand *ih_next; 90 int ih_ipl; 91 int ih_virq; 92 char ih_xname[INTRDEVNAMEBUF]; 93 }; 94 95 void softint_fast_dispatch(struct lwp *, int); 96 97 #ifdef __HAVE_FAST_SOFTINTS 98 #define softint_init_md powerpc_softint_init_md 99 #define softint_trigger powerpc_softint_trigger 100 #endif 101 102 #ifdef __IMASK_T 103 typedef __IMASK_T imask_t; 104 #else 105 typedef uint32_t imask_t; 106 #endif 107 108 #define NVIRQ (sizeof(imask_t)*8) /* 32 virtual IRQs */ 109 #ifndef NIRQ 110 #define NIRQ 256 /* up to 256 HW IRQs */ 111 #endif 112 113 #define HWIRQ_MAX (NVIRQ - 1) 114 #define HWIRQ_MASK (~(imask_t)0 >> 1) 115 116 #define PIC_VIRQ_TO_MASK(v) __BIT(HWIRQ_MAX - (v)) 117 #define PIC_VIRQ_MS_PENDING(p) __builtin_clz(p) 118 119 #endif /* !_MODULE */ 120 121 #define spl0() spllower(0) 122 123 typedef int ipl_t; 124 typedef struct { 125 ipl_t _ipl; 126 } ipl_cookie_t; 127 128 static __inline ipl_cookie_t 129 makeiplcookie(ipl_t ipl) 130 { 131 132 return (ipl_cookie_t){._ipl = ipl}; 133 } 134 135 static __inline int 136 splraiseipl(ipl_cookie_t icookie) 137 { 138 139 return splraise(icookie._ipl); 140 } 141 142 #include <sys/spl.h> 143 144 #endif /* _LOCORE */ 145 146 #endif /* _POWERPC_INTR_MACHDEP_H_ */ 147