1 /* $NetBSD: intr.h,v 1.26 2007/12/03 15:33:39 ad Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _HP300_INTR_H_ 40 #define _HP300_INTR_H_ 41 42 #include <sys/device.h> 43 #include <sys/queue.h> 44 #include <machine/psl.h> 45 46 /* 47 * Interrupt "levels". These are a more abstract representation 48 * of interrupt levels, and do not have the same meaning as m68k 49 * CPU interrupt levels. They serve the following purposes: 50 * 51 * - properly order ISRs in the list for that CPU ipl 52 * - compute CPU PSL values for the spl*() calls. 53 * - used to create cookie for the splraiseipl(). 54 */ 55 #define IPL_NONE 0 56 #define IPL_SOFTCLOCK 1 57 #define IPL_SOFTBIO 2 58 #define IPL_SOFTNET 3 59 #define IPL_SOFTSERIAL 4 60 #define IPL_VM 5 61 #define IPL_SCHED 6 62 #define IPL_HIGH 7 63 #define NIPL 8 64 65 /* 66 * Convert PSL values to m68k CPU IPLs and vice-versa. 67 * Note: CPU IPL values are different from IPL_* used by splraiseipl(). 68 */ 69 #define PSLTOIPL(x) (((x) >> 8) & 0xf) 70 #define IPLTOPSL(x) ((((x) & 0xf) << 8) | PSL_S) 71 72 extern u_short hp300_ipl2psl[]; 73 74 typedef int ipl_t; 75 typedef struct { 76 uint16_t _psl; 77 } ipl_cookie_t; 78 79 static inline ipl_cookie_t 80 makeiplcookie(ipl_t ipl) 81 { 82 83 return (ipl_cookie_t){._psl = hp300_ipl2psl[ipl]}; 84 } 85 86 static inline int 87 splraiseipl(ipl_cookie_t icookie) 88 { 89 90 return _splraise(icookie._psl); 91 } 92 93 /* These spl calls are _not_ to be used by machine-independent code. */ 94 #define splhil() splraise1() 95 #define splkbd() splhil() 96 97 /* These spl calls are used by machine-independent code. */ 98 /* spl0 requires checking for software interrupts */ 99 #define splsoftbio() splraise1() 100 #define splsoftclock() splraise1() 101 #define splsoftnet() splraise1() 102 #define splsoftserial() splraise1() 103 #define splvm() _splraise(hp300_ipl2psl[IPL_VM]) 104 #define splsched() spl6() 105 #define splhigh() spl7() 106 107 /* watch out for side effects */ 108 #define splx(s) ((s) & PSL_IPL ? _spl((s)) : spl0()) 109 110 struct hp300_intrhand { 111 LIST_ENTRY(hp300_intrhand) ih_q; 112 int (*ih_fn)(void *); 113 void *ih_arg; 114 int ih_ipl; 115 int ih_priority; 116 }; 117 118 struct hp300_intr { 119 LIST_HEAD(, hp300_intrhand) hi_q; 120 struct evcnt hi_evcnt; 121 }; 122 123 /* locore.s */ 124 int spl0(void); 125 126 /* intr.c */ 127 void intr_init(void); 128 void *intr_establish(int (*)(void *), void *, int, int); 129 void intr_disestablish(void *); 130 void intr_dispatch(int); 131 void intr_printlevels(void); 132 133 #endif /* _HP300_INTR_H_ */ 134