intr.h revision 1.6
1 /* $NetBSD: intr.h,v 1.6 2003/09/03 21:33:35 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 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 * Sandpoint-specific code developed 40 * by Allen Briggs for Wasabi Systems, Inc. 41 * 42 * OpenPIC code derived from code with the following notice. 43 */ 44 /*- 45 * Copyright (c) 2000 Tsubai Masanari. All rights reserved. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. The name of the author may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 62 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 63 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 64 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 65 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 66 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 67 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 #ifndef _SANDPOINT_INTR_H_ 71 #define _SANDPOINT_INTR_H_ 72 73 /* Interrupt priority `levels'. */ 74 #define IPL_NONE 9 /* nothing */ 75 #define IPL_SOFTCLOCK 8 /* software clock interrupt */ 76 #define IPL_SOFTNET 7 /* software network interrupt */ 77 #define IPL_BIO 6 /* block I/O */ 78 #define IPL_NET 5 /* network */ 79 #define IPL_SOFTSERIAL 4 /* software serial interrupt */ 80 #define IPL_TTY 3 /* terminal */ 81 #define IPL_VM 3 /* memory allocation */ 82 #define IPL_AUDIO 2 /* audio */ 83 #define IPL_CLOCK 1 /* clock */ 84 #define IPL_HIGH 1 /* everything */ 85 #define IPL_SERIAL 0 /* serial */ 86 #define NIPL 10 87 88 /* Interrupt sharing types. */ 89 #define IST_NONE 0 /* none */ 90 #define IST_PULSE 1 /* pulsed */ 91 #define IST_EDGE 2 /* edge-triggered */ 92 #define IST_LEVEL 3 /* level-triggered */ 93 94 #ifndef _LOCORE 95 #define CLKF_BASEPRI(frame) ((frame)->pri == 0) 96 97 /* 98 * Interrupt handler chains. intr_establish() inserts a handler into 99 * the list. The handler is called with its (single) argument. 100 */ 101 struct intrhand { 102 int (*ih_fun)(void *); 103 void *ih_arg; 104 u_long ih_count; 105 struct intrhand *ih_next; 106 int ih_level; 107 int ih_irq; 108 }; 109 110 void do_pending_int(void); 111 void *intr_establish(int, int, int, int (*)(void *), void *); 112 void intr_disestablish(void *); 113 114 static __inline int splraise(int); 115 static __inline int spllower(int); 116 static __inline void splx(int); 117 static __inline void set_sint(int); 118 119 extern volatile int cpl, ipending, astpending, tickspending; 120 extern int imask[]; 121 extern long intrcnt[]; 122 123 /* 124 * Reorder protection in the following inline functions is 125 * protected with the "eieio" instruction. 126 */ 127 static __inline int 128 splraise(newcpl) 129 int newcpl; 130 { 131 int oldcpl; 132 133 __asm__ volatile("sync; eieio\n"); /* don't reorder.... */ 134 oldcpl = cpl; 135 cpl = oldcpl | newcpl; 136 __asm__ volatile("sync; eieio\n"); /* reorder protect */ 137 return(oldcpl); 138 } 139 140 static __inline void 141 splx(newcpl) 142 int newcpl; 143 { 144 __asm__ volatile("sync; eieio\n"); /* reorder protect */ 145 cpl = newcpl; 146 if(ipending & ~newcpl) 147 do_pending_int(); 148 __asm__ volatile("sync; eieio\n"); /* reorder protect */ 149 } 150 151 static __inline int 152 spllower(newcpl) 153 int newcpl; 154 { 155 int oldcpl; 156 157 __asm__ volatile("sync; eieio\n"); /* reorder protect */ 158 oldcpl = cpl; 159 cpl = newcpl; 160 if(ipending & ~newcpl) 161 do_pending_int(); 162 __asm__ volatile("sync; eieio\n"); /* reorder protect */ 163 return(oldcpl); 164 } 165 166 /* Following code should be implemented with lwarx/stwcx to avoid 167 * the disable/enable. i need to read the manual once more.... */ 168 static __inline void 169 set_sint(pending) 170 int pending; 171 { 172 int msrsave; 173 174 __asm__ ("mfmsr %0" : "=r"(msrsave)); 175 __asm__ volatile ("mtmsr %0" :: "r"(msrsave & ~PSL_EE)); 176 ipending |= pending; 177 __asm__ volatile ("mtmsr %0" :: "r"(msrsave)); 178 } 179 180 /* 181 * Motorola SandPoint PPC eval board interrupt list 182 */ 183 #define ICU_LEN 25 184 #define ICU_MASK 0x01ffffff 185 186 #define LEGAL_IRQ(x) ((x) >= 0 && (x) < ICU_LEN) 187 188 #define SINT_ISA 0x10000000 189 #define SINT_NET 0x20000000 190 #define SINT_CLOCK 0x40000000 191 #define SINT_SERIAL 0x80000000 192 #define SPL_CLOCK 0x00000001 193 #define SINT_MASK (SINT_ISA|SINT_CLOCK|SINT_NET|SINT_SERIAL) 194 195 #define CNT_SINT_ISA 28 196 #define CNT_SINT_NET 29 197 #define CNT_SINT_CLOCK 30 198 #define CNT_SINT_SERIAL 31 199 #define CNT_CLOCK 0 200 201 #define splbio() splraise(imask[IPL_BIO]) 202 #define splnet() splraise(imask[IPL_NET]) 203 #define spltty() splraise(imask[IPL_TTY]) 204 #define splclock() splraise(imask[IPL_CLOCK]) 205 #define splvm() splraise(imask[IPL_VM]) 206 #define splserial() splraise(imask[IPL_SERIAL]) 207 #define splstatclock() splclock() 208 #define spllowersoftclock() spllower(imask[IPL_SOFTCLOCK]) 209 #define splsoftclock() splraise(imask[IPL_SOFTCLOCK]) 210 #define splsoftnet() splraise(imask[IPL_SOFTNET]) 211 #define splsoftserial() splraise(imask[IPL_SOFTSERIAL]) 212 213 #define spllpt() spltty() 214 215 #define setsoftisa() set_sint(SINT_ISA); 216 #define setsoftclock() set_sint(SINT_CLOCK); 217 #define setsoftnet() set_sint(SINT_NET); 218 #define setsoftserial() set_sint(SINT_SERIAL); 219 220 #define splhigh() splraise(imask[IPL_HIGH]) 221 #define spl0() spllower(0) 222 223 #define splsched() splhigh() 224 #define spllock() splhigh() 225 226 #endif /* !_LOCORE */ 227 228 #endif /* !_SANDPOINT_INTR_H_ */ 229
Indexes created Sat Sep 27 22:09:54 GMT 2025