intr.h revision 1.10.16.2
1 /* $NetBSD: intr.h,v 1.10.16.2 2006/11/04 14:13:38 yamt 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_STATCLOCK IPL_CLOCK 85 #define IPL_HIGH 1 /* everything */ 86 #define IPL_SCHED IPL_HIGH 87 #define IPL_LOCK IPL_HIGH 88 #define IPL_SERIAL 0 /* serial */ 89 #define NIPL 10 90 91 /* Interrupt sharing types. */ 92 #define IST_NONE 0 /* none */ 93 #define IST_PULSE 1 /* pulsed */ 94 #define IST_EDGE 2 /* edge-triggered */ 95 #define IST_LEVEL 3 /* level-triggered */ 96 97 #ifndef _LOCORE 98 #define CLKF_BASEPRI(frame) ((frame)->pri == 0) 99 100 /* 101 * Interrupt handler chains. intr_establish() inserts a handler into 102 * the list. The handler is called with its (single) argument. 103 */ 104 struct intrhand { 105 int (*ih_fun)(void *); 106 void *ih_arg; 107 u_long ih_count; 108 struct intrhand *ih_next; 109 int ih_level; 110 int ih_irq; 111 }; 112 113 void do_pending_int(void); 114 void *intr_establish(int, int, int, int (*)(void *), void *); 115 void intr_disestablish(void *); 116 117 static __inline int splraise(int); 118 static __inline int spllower(int); 119 static __inline void splx(int); 120 static __inline void set_sint(int); 121 122 extern volatile int cpl, ipending, astpending, tickspending; 123 extern int imask[]; 124 extern long intrcnt[]; 125 126 /* 127 * Reorder protection in the following inline functions is 128 * protected with the "eieio" instruction. 129 */ 130 static __inline int 131 splraise(newcpl) 132 int newcpl; 133 { 134 int oldcpl; 135 136 __asm volatile("sync; eieio\n"); /* don't reorder.... */ 137 oldcpl = cpl; 138 cpl = oldcpl | newcpl; 139 __asm volatile("sync; eieio\n"); /* reorder protect */ 140 return(oldcpl); 141 } 142 143 static __inline void 144 splx(newcpl) 145 int newcpl; 146 { 147 __asm volatile("sync; eieio\n"); /* reorder protect */ 148 cpl = newcpl; 149 if(ipending & ~newcpl) 150 do_pending_int(); 151 __asm volatile("sync; eieio\n"); /* reorder protect */ 152 } 153 154 static __inline int 155 spllower(newcpl) 156 int newcpl; 157 { 158 int oldcpl; 159 160 __asm volatile("sync; eieio\n"); /* reorder protect */ 161 oldcpl = cpl; 162 cpl = newcpl; 163 if(ipending & ~newcpl) 164 do_pending_int(); 165 __asm volatile("sync; eieio\n"); /* reorder protect */ 166 return(oldcpl); 167 } 168 169 /* Following code should be implemented with lwarx/stwcx to avoid 170 * the disable/enable. i need to read the manual once more.... */ 171 static __inline void 172 set_sint(pending) 173 int pending; 174 { 175 int msrsave; 176 177 __asm ("mfmsr %0" : "=r"(msrsave)); 178 __asm volatile ("mtmsr %0" :: "r"(msrsave & ~PSL_EE)); 179 ipending |= pending; 180 __asm volatile ("mtmsr %0" :: "r"(msrsave)); 181 } 182 183 /* 184 * Motorola SandPoint PPC eval board interrupt list 185 */ 186 #define ICU_LEN 25 187 #define ICU_MASK 0x01ffffff 188 189 #define LEGAL_IRQ(x) ((x) >= 0 && (x) < ICU_LEN) 190 191 #define SINT_ISA 0x10000000 192 #define SINT_NET 0x20000000 193 #define SINT_CLOCK 0x40000000 194 #define SINT_SERIAL 0x80000000 195 #define SPL_CLOCK 0x00000001 196 #define SINT_MASK (SINT_ISA|SINT_CLOCK|SINT_NET|SINT_SERIAL) 197 198 #define CNT_SINT_ISA 28 199 #define CNT_SINT_NET 29 200 #define CNT_SINT_CLOCK 30 201 #define CNT_SINT_SERIAL 31 202 #define CNT_CLOCK 0 203 204 #define splbio() splraise(imask[IPL_BIO]) 205 #define splnet() splraise(imask[IPL_NET]) 206 #define spltty() splraise(imask[IPL_TTY]) 207 #define splclock() splraise(imask[IPL_CLOCK]) 208 #define splvm() splraise(imask[IPL_VM]) 209 #define splserial() splraise(imask[IPL_SERIAL]) 210 #define splstatclock() splclock() 211 #define spllowersoftclock() spllower(imask[IPL_SOFTCLOCK]) 212 #define splsoftclock() splraise(imask[IPL_SOFTCLOCK]) 213 #define splsoftnet() splraise(imask[IPL_SOFTNET]) 214 #define splsoftserial() splraise(imask[IPL_SOFTSERIAL]) 215 216 #define spllpt() spltty() 217 218 #define setsoftisa() set_sint(SINT_ISA); 219 #define setsoftclock() set_sint(SINT_CLOCK); 220 #define setsoftnet() set_sint(SINT_NET); 221 #define setsoftserial() set_sint(SINT_SERIAL); 222 223 #define splhigh() splraise(imask[IPL_HIGH]) 224 #define spl0() spllower(0) 225 226 #define splsched() splhigh() 227 #define spllock() splhigh() 228 229 typedef int ipl_t; 230 typedef struct { 231 ipl_t _ipl; 232 } ipl_cookie_t; 233 234 static inline ipl_cookie_t 235 makeiplcookie(ipl_t ipl) 236 { 237 238 return (ipl_cookie_t){._ipl = ipl}; 239 } 240 241 static inline int 242 splraiseipl(ipl_cookie_t icookie) 243 { 244 245 return splraise(imask[icookie._ipl]); 246 } 247 248 #endif /* !_LOCORE */ 249 250 #endif /* !_SANDPOINT_INTR_H_ */ 251
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