1 /* $NetBSD: intr.h,v 1.8 2011/06/17 23:36:17 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 1.8 2011/06/17 23:36:17 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 #ifndef _LOCORE 40 void *intr_establish(int, int, int, int (*)(void *), void *); 41 void intr_disestablish(void *); 42 const char *intr_typename(int); 43 void genppc_cpu_configure(void); 44 #endif 45 46 /* Interrupt priority `levels'. */ 47 #define IPL_NONE 0 /* nothing */ 48 #define IPL_SOFTCLOCK 1 /* timeouts */ 49 #define IPL_SOFTBIO 2 /* block I/O */ 50 #define IPL_SOFTNET 3 /* protocol stacks */ 51 #define IPL_SOFTSERIAL 4 /* serial */ 52 #define IPL_VM 5 /* memory allocation */ 53 #define IPL_SCHED 6 54 #define IPL_HIGH 7 /* everything */ 55 #define NIPL 8 56 57 /* Interrupt sharing types. */ 58 #define IST_NONE 0 /* none */ 59 #define IST_PULSE 1 /* pulsed */ 60 #define IST_EDGE 2 /* edge-triggered */ 61 #define IST_LEVEL 3 /* level-triggered */ 62 63 #ifndef _LOCORE 64 /* 65 * Interrupt handler chains. intr_establish() inserts a handler into 66 * the list. The handler is called with its (single) argument. 67 */ 68 struct intrhand { 69 int (*ih_fun)(void *); 70 void *ih_arg; 71 struct intrhand *ih_next; 72 int ih_ipl; 73 int ih_virq; 74 }; 75 76 int splraise(int); 77 int spllower(int); 78 void splx(int); 79 80 void softint_fast_dispatch(struct lwp *, int); 81 82 #define softint_init_md powerpc_softint_init_md 83 #define softint_trigger powerpc_softint_trigger 84 85 #ifdef __IMASK_T 86 typedef __IMASK_T imask_t; 87 #else 88 typedef uint32_t imask_t; 89 #endif 90 91 extern imask_t imask[]; 92 93 #define NVIRQ (sizeof(imask_t)*8) /* 32 virtual IRQs */ 94 #ifndef NIRQ 95 #define NIRQ 128 /* up to 128 HW IRQs */ 96 #endif 97 98 #define HWIRQ_MAX (NVIRQ - 1) 99 #define HWIRQ_MASK (~(imask_t)0 >> 1) 100 101 #define PIC_VIRQ_TO_MASK(v) __BIT(HWIRQ_MAX - (v)) 102 #define PIC_VIRQ_MS_PENDING(p) __builtin_clz(p) 103 104 #define spl0() spllower(0) 105 106 typedef int ipl_t; 107 typedef struct { 108 ipl_t _ipl; 109 } ipl_cookie_t; 110 111 static inline ipl_cookie_t 112 makeiplcookie(ipl_t ipl) 113 { 114 115 return (ipl_cookie_t){._ipl = ipl}; 116 } 117 118 static inline int 119 splraiseipl(ipl_cookie_t icookie) 120 { 121 122 return splraise(icookie._ipl); 123 } 124 125 #include <sys/spl.h> 126 127 #endif /* _LOCORE */ 128 129 #endif /* POWERPC_INTR_MACHDEP_H */ 130