1 /* $OpenBSD: intr.h,v 1.25 2009/03/15 19:40:40 miod Exp $ */ 2 3 /* 4 * Copyright (c) 2002-2004 Michael Shalayeff 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _MACHINE_INTR_H_ 30 #define _MACHINE_INTR_H_ 31 32 #include <machine/psl.h> 33 34 #define CPU_NINTS 32 35 #define NIPL 16 36 37 #define IPL_NONE 0 38 #define IPL_SOFTCLOCK 1 39 #define IPL_SOFTNET 2 40 #define IPL_BIO 3 41 #define IPL_NET 4 42 #define IPL_SOFTTTY 5 43 #define IPL_TTY 6 44 #define IPL_VM 7 45 #define IPL_AUDIO 8 46 #define IPL_CLOCK 9 47 #define IPL_STATCLOCK 10 48 #define IPL_HIGH 10 49 #define IPL_NESTED 11 /* pseudo-level for sub-tables */ 50 51 #define IST_NONE 0 52 #define IST_PULSE 1 53 #define IST_EDGE 2 54 #define IST_LEVEL 3 55 56 #if !defined(_LOCORE) && defined(_KERNEL) 57 58 #include <machine/atomic.h> 59 60 extern volatile int cpl; 61 extern volatile u_long ipending, imask[NIPL]; 62 extern int astpending; 63 64 #ifdef DIAGNOSTIC 65 void splassert_fail(int, int, const char *); 66 extern int splassert_ctl; 67 void splassert_check(int, const char *); 68 #define splassert(__wantipl) do { \ 69 if (splassert_ctl > 0) { \ 70 splassert_check(__wantipl, __func__); \ 71 } \ 72 } while (0) 73 #define splsoftassert(__wantipl) splassert(__wantipl) 74 #else 75 #define splassert(__wantipl) do { /* nada */ } while (0) 76 #define splsoftassert(__wantipl) do { /* nada */ } while (0) 77 #endif /* DIAGNOSTIC */ 78 79 void cpu_intr_init(void); 80 void cpu_intr(void *); 81 82 static __inline int 83 spllower(int ncpl) 84 { 85 register int ocpl asm("r28") = ncpl; 86 __asm __volatile("copy %0, %%arg0\n\tbreak %1, %2" 87 : "+r" (ocpl) : "i" (HPPA_BREAK_KERNEL), "i" (HPPA_BREAK_SPLLOWER) 88 : "r26", "memory"); 89 return (ocpl); 90 } 91 92 static __inline int 93 splraise(int ncpl) 94 { 95 int ocpl = cpl; 96 97 if (ocpl < ncpl) 98 cpl = ncpl; 99 __asm __volatile ("sync" : "+r" (cpl)); 100 101 return (ocpl); 102 } 103 104 static __inline void 105 splx(int ncpl) 106 { 107 (void)spllower(ncpl); 108 } 109 110 #define splsoftclock() splraise(IPL_SOFTCLOCK) 111 #define splsoftnet() splraise(IPL_SOFTNET) 112 #define splbio() splraise(IPL_BIO) 113 #define splnet() splraise(IPL_NET) 114 #define splsofttty() splraise(IPL_SOFTTTY) 115 #define spltty() splraise(IPL_TTY) 116 #define splvm() splraise(IPL_VM) 117 #define splaudio() splraise(IPL_AUDIO) 118 #define splclock() splraise(IPL_CLOCK) 119 #define splsched() splraise(IPL_SCHED) 120 #define splstatclock() splraise(IPL_STATCLOCK) 121 #define splhigh() splraise(IPL_HIGH) 122 #define spl0() spllower(IPL_NONE) 123 124 #define softintr(mask) atomic_setbits_long(&ipending, mask) 125 126 #define SOFTINT_MASK ((1 << (IPL_SOFTCLOCK - 1)) | \ 127 (1 << (IPL_SOFTNET - 1)) | (1 << (IPL_SOFTTTY - 1))) 128 129 #define setsoftast() (astpending = 1) 130 #define setsoftnet() softintr(1 << (IPL_SOFTNET - 1)) 131 132 void *softintr_establish(int, void (*)(void *), void *); 133 void softintr_disestablish(void *); 134 void softintr_schedule(void *); 135 136 #endif /* !_LOCORE && _KERNEL */ 137 #endif /* _MACHINE_INTR_H_ */ 138