intr.h revision 1.19.16.2
1 /* $NetBSD: intr.h,v 1.19.16.2 2006/12/30 20:46:49 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 #ifndef _PREP_INTR_H_ 40 #define _PREP_INTR_H_ 41 42 /* Interrupt priority `levels'. */ 43 #define IPL_NONE 9 /* nothing */ 44 #define IPL_SOFTCLOCK 8 /* software clock interrupt */ 45 #define IPL_SOFTNET 7 /* software network interrupt */ 46 #define IPL_BIO 6 /* block I/O */ 47 #define IPL_NET 5 /* network */ 48 #define IPL_SOFTSERIAL 4 /* software serial interrupt */ 49 #define IPL_TTY 3 /* terminal */ 50 #define IPL_LPT IPL_TTY 51 #define IPL_VM 3 /* memory allocation */ 52 #define IPL_AUDIO 2 /* audio */ 53 #define IPL_CLOCK 1 /* clock */ 54 #define IPL_STATCLOCK IPL_CLOCK 55 #define IPL_HIGH 1 /* everything */ 56 #define IPL_SCHED IPL_HIGH 57 #define IPL_LOCK IPL_HIGH 58 #define IPL_SERIAL 0 /* serial */ 59 #define NIPL 10 60 61 /* Interrupt sharing types. */ 62 #define IST_NONE 0 /* none */ 63 #define IST_PULSE 1 /* pulsed */ 64 #define IST_EDGE 2 /* edge-triggered */ 65 #define IST_LEVEL 3 /* level-triggered */ 66 67 #ifndef _LOCORE 68 #include <powerpc/softintr.h> 69 #include <machine/cpu.h> 70 71 /* 72 * Interrupt handler chains. intr_establish() inserts a handler into 73 * the list. The handler is called with its (single) argument. 74 */ 75 struct intrhand { 76 int (*ih_fun)(void *); 77 void *ih_arg; 78 u_long ih_count; 79 struct intrhand *ih_next; 80 int ih_level; 81 int ih_irq; 82 }; 83 84 #include <sys/device.h> 85 struct intrsource { 86 int is_type; 87 int is_level; 88 int is_hwirq; 89 int is_mask; 90 struct intrhand *is_hand; 91 struct evcnt is_ev; 92 char is_source[16]; 93 }; 94 95 int splraise(int); 96 int spllower(int); 97 void softintr(int); 98 99 void do_pending_int(void); 100 101 void init_intr(void); 102 void init_intr_ivr(void); 103 void init_intr_openpic(void); 104 void openpic_init(unsigned char *); 105 106 void enable_intr(void); 107 void disable_intr(void); 108 109 void *intr_establish(int, int, int, int (*)(void *), void *); 110 void intr_disestablish(void *); 111 112 void softnet(int); 113 void softserial(void); 114 int isa_intr(void); 115 void isa_intr_mask(int); 116 void isa_intr_clr(int); 117 void isa_setirqstat(int, int, int); 118 119 extern int imen; 120 extern int imask[]; 121 extern struct intrhand *intrhand[]; 122 extern vaddr_t prep_intr_reg; 123 extern uint32_t prep_intr_reg_off; 124 125 #define ICU_LEN 32 126 extern struct intrsource intrsources[ICU_LEN]; 127 128 #define IRQ_SLAVE 2 129 #define LEGAL_IRQ(x) ((x) >= 0 && (x) < ICU_LEN && (x) != IRQ_SLAVE) 130 #define I8259_INTR_NUM 16 131 #define OPENPIC_INTR_NUM ((ICU_LEN)-(I8259_INTR_NUM)) 132 #define CLKF_BASEPRI(frame) ((frame)->pri == 0) 133 134 #define PREP_INTR_REG 0xbffff000 135 #define INTR_VECTOR_REG 0xff0 136 137 #define SINT_CLOCK 0x20000000 138 #define SINT_NET 0x40000000 139 #define SINT_SERIAL 0x80000000 140 #define SPL_CLOCK 0x00000001 141 #define SINT_MASK (SINT_CLOCK|SINT_NET|SINT_SERIAL) 142 143 #define CNT_SINT_NET 29 144 #define CNT_SINT_CLOCK 30 145 #define CNT_SINT_SERIAL 31 146 #define CNT_CLOCK 0 147 148 #define spllowersoftclock() spllower(imask[IPL_SOFTCLOCK]) 149 150 #define setsoftclock() softintr(SINT_CLOCK); 151 #define setsoftnet() softintr(SINT_NET); 152 #define setsoftserial() softintr(SINT_SERIAL); 153 154 #define splx(x) spllower(x) 155 #define spl0() spllower(0) 156 157 typedef int ipl_t; 158 typedef struct { 159 ipl_t _ipl; 160 } ipl_cookie_t; 161 162 static inline ipl_cookie_t 163 makeiplcookie(ipl_t ipl) 164 { 165 166 return (ipl_cookie_t){._ipl = ipl}; 167 } 168 169 static inline int 170 splraiseipl(ipl_cookie_t icookie) 171 { 172 173 return splraise(imask[icookie._ipl]); 174 } 175 176 #include <sys/spl.h> 177 178 #endif /* !_LOCORE */ 179 180 #endif /* !_PREP_INTR_H_ */ 181
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