1 /* $NetBSD: intr.h,v 1.10 2012/01/14 19:35:58 phx 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 1.10 2012/01/14 19:35:58 phx Exp $"); 32 #endif 33 34 #ifndef POWERPC_INTR_MACHDEP_H 35 #define POWERPC_INTR_MACHDEP_H 36 37 #define __HAVE_FAST_SOFTINTS 1 38 39 40 /* Interrupt priority `levels'. */ 41 #define IPL_NONE 0 /* nothing */ 42 #define IPL_SOFTCLOCK 1 /* timeouts */ 43 #define IPL_SOFTBIO 2 /* block I/O */ 44 #define IPL_SOFTNET 3 /* protocol stacks */ 45 #define IPL_SOFTSERIAL 4 /* serial */ 46 #define IPL_VM 5 /* memory allocation */ 47 #define IPL_SCHED 6 48 #define IPL_HIGH 7 /* everything */ 49 #define NIPL 8 50 51 /* Interrupt sharing types. */ 52 #define IST_NONE 0 /* none */ 53 #define IST_PULSE 1 /* pulsed */ 54 #define IST_EDGE 2 /* falling edge triggered */ 55 #define IST_LEVEL 3 /* low level triggered */ 56 57 #define IST_EDGE_FALLING IST_EDGE 58 #define IST_EDGE_RISING 4 /* rising edge triggered */ 59 #define IST_LEVEL_LOW IST_LEVEL 60 #define IST_LEVEL_HIGH 5 /* high level triggered */ 61 62 #if !defined(_LOCORE) 63 void * intr_establish(int, int, int, int (*)(void *), void *); 64 void intr_disestablish(void *); 65 const char * 66 intr_typename(int); 67 68 int splraise(int); 69 int spllower(int); 70 void splx(int); 71 72 #if !defined(_MODULE) 73 74 void genppc_cpu_configure(void); 75 76 /* 77 * Interrupt handler chains. intr_establish() inserts a handler into 78 * the list. The handler is called with its (single) argument. 79 */ 80 struct intrhand { 81 int (*ih_fun)(void *); 82 void *ih_arg; 83 struct intrhand *ih_next; 84 int ih_ipl; 85 int ih_virq; 86 }; 87 88 void softint_fast_dispatch(struct lwp *, int); 89 90 #define softint_init_md powerpc_softint_init_md 91 #define softint_trigger powerpc_softint_trigger 92 93 #ifdef __IMASK_T 94 typedef __IMASK_T imask_t; 95 #else 96 typedef uint32_t imask_t; 97 #endif 98 99 extern imask_t imask[]; 100 101 #define NVIRQ (sizeof(imask_t)*8) /* 32 virtual IRQs */ 102 #ifndef NIRQ 103 #define NIRQ 128 /* up to 128 HW IRQs */ 104 #endif 105 106 #define HWIRQ_MAX (NVIRQ - 1) 107 #define HWIRQ_MASK (~(imask_t)0 >> 1) 108 109 #define PIC_VIRQ_TO_MASK(v) __BIT(HWIRQ_MAX - (v)) 110 #define PIC_VIRQ_MS_PENDING(p) __builtin_clz(p) 111 112 #endif /* !_MODULE */ 113 114 #define spl0() spllower(0) 115 116 typedef int ipl_t; 117 typedef struct { 118 ipl_t _ipl; 119 } ipl_cookie_t; 120 121 static inline ipl_cookie_t 122 makeiplcookie(ipl_t ipl) 123 { 124 125 return (ipl_cookie_t){._ipl = ipl}; 126 } 127 128 static inline int 129 splraiseipl(ipl_cookie_t icookie) 130 { 131 132 return splraise(icookie._ipl); 133 } 134 135 #include <sys/spl.h> 136 137 #endif /* _LOCORE */ 138 139 #endif /* POWERPC_INTR_MACHDEP_H */ 140