1 /* $NetBSD: intr.h,v 1.9 2011/06/20 20:24:28 matt 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 1.9 2011/06/20 20:24:28 matt 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 /* edge-triggered */ 55 #define IST_LEVEL 3 /* level-triggered */ 56 57 #if !defined(_LOCORE) 58 void * intr_establish(int, int, int, int (*)(void *), void *); 59 void intr_disestablish(void *); 60 const char * 61 intr_typename(int); 62 63 int splraise(int); 64 int spllower(int); 65 void splx(int); 66 67 #if !defined(_MODULE) 68 69 void genppc_cpu_configure(void); 70 71 /* 72 * Interrupt handler chains. intr_establish() inserts a handler into 73 * the list. The handler is called with its (single) argument. 74 */ 75 struct intrhand { 76 int (*ih_fun)(void *); 77 void *ih_arg; 78 struct intrhand *ih_next; 79 int ih_ipl; 80 int ih_virq; 81 }; 82 83 void softint_fast_dispatch(struct lwp *, int); 84 85 #define softint_init_md powerpc_softint_init_md 86 #define softint_trigger powerpc_softint_trigger 87 88 #ifdef __IMASK_T 89 typedef __IMASK_T imask_t; 90 #else 91 typedef uint32_t imask_t; 92 #endif 93 94 extern imask_t imask[]; 95 96 #define NVIRQ (sizeof(imask_t)*8) /* 32 virtual IRQs */ 97 #ifndef NIRQ 98 #define NIRQ 128 /* up to 128 HW IRQs */ 99 #endif 100 101 #define HWIRQ_MAX (NVIRQ - 1) 102 #define HWIRQ_MASK (~(imask_t)0 >> 1) 103 104 #define PIC_VIRQ_TO_MASK(v) __BIT(HWIRQ_MAX - (v)) 105 #define PIC_VIRQ_MS_PENDING(p) __builtin_clz(p) 106 107 #endif /* !_MODULE */ 108 109 #define spl0() spllower(0) 110 111 typedef int ipl_t; 112 typedef struct { 113 ipl_t _ipl; 114 } ipl_cookie_t; 115 116 static inline ipl_cookie_t 117 makeiplcookie(ipl_t ipl) 118 { 119 120 return (ipl_cookie_t){._ipl = ipl}; 121 } 122 123 static inline int 124 splraiseipl(ipl_cookie_t icookie) 125 { 126 127 return splraise(icookie._ipl); 128 } 129 130 #include <sys/spl.h> 131 132 #endif /* _LOCORE */ 133 134 #endif /* POWERPC_INTR_MACHDEP_H */ 135