1 /* $NetBSD: intr.h,v 1.5 2010/04/25 12:26:07 kiyohara 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 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: intr.h,v 1.5 2010/04/25 12:26:07 kiyohara Exp $"); 31 32 #ifndef POWERPC_INTR_MACHDEP_H 33 #define POWERPC_INTR_MACHDEP_H 34 35 void *intr_establish(int, int, int, int (*)(void *), void *); 36 void intr_disestablish(void *); 37 const char *intr_typename(int); 38 void genppc_cpu_configure(void); 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 #ifndef _LOCORE 58 /* 59 * Interrupt handler chains. intr_establish() inserts a handler into 60 * the list. The handler is called with its (single) argument. 61 */ 62 struct intrhand { 63 int (*ih_fun)(void *); 64 void *ih_arg; 65 struct intrhand *ih_next; 66 int ih_level; 67 int ih_irq; 68 }; 69 70 int splraise(int); 71 int spllower(int); 72 void splx(int); 73 void softintr(int); 74 75 typedef u_int imask_t; 76 extern imask_t imask[]; 77 78 #define NVIRQ 32 /* 32 virtual IRQs */ 79 #define NIRQ 128 /* up to 128 HW IRQs */ 80 81 #define HWIRQ_MAX (NVIRQ - 5 - 1) 82 #define HWIRQ_MASK 0x07ffffff 83 84 #define MS_PENDING(p) (31 - cntlzw(p)) 85 86 /* Soft interrupt masks. */ 87 #define SIR_CLOCK 27 88 #define SIR_BIO 28 89 #define SIR_NET 29 90 #define SIR_SERIAL 30 91 #define SPL_CLOCK 31 92 93 #define setsoftclock() softintr(SIR_CLOCK) 94 #define setsoftbio() softintr(SIR_BIO) 95 #define setsoftnet() softintr(SIR_NET) 96 #define setsoftserial() softintr(SIR_SERIAL) 97 98 #define spl0() spllower(0) 99 100 typedef int ipl_t; 101 typedef struct { 102 ipl_t _ipl; 103 } ipl_cookie_t; 104 105 static inline ipl_cookie_t 106 makeiplcookie(ipl_t ipl) 107 { 108 109 return (ipl_cookie_t){._ipl = ipl}; 110 } 111 112 static inline int 113 splraiseipl(ipl_cookie_t icookie) 114 { 115 116 return splraise(imask[icookie._ipl]); 117 } 118 119 #include <sys/spl.h> 120 121 #endif /* _LOCORE */ 122 123 #endif /* POWERPC_INTR_MACHDEP_H */ 124