openpic.h revision 1.1
1 1.1 briggs /* $NetBSD: openpic.h,v 1.1 2001/02/02 06:11:52 briggs Exp $ */ 2 1.1 briggs 3 1.1 briggs /*- 4 1.1 briggs * Copyright (c) 2000 Tsubai Masanari. All rights reserved. 5 1.1 briggs * 6 1.1 briggs * Redistribution and use in source and binary forms, with or without 7 1.1 briggs * modification, are permitted provided that the following conditions 8 1.1 briggs * are met: 9 1.1 briggs * 1. Redistributions of source code must retain the above copyright 10 1.1 briggs * notice, this list of conditions and the following disclaimer. 11 1.1 briggs * 2. Redistributions in binary form must reproduce the above copyright 12 1.1 briggs * notice, this list of conditions and the following disclaimer in the 13 1.1 briggs * documentation and/or other materials provided with the distribution. 14 1.1 briggs * 3. The name of the author may not be used to endorse or promote products 15 1.1 briggs * derived from this software without specific prior written permission. 16 1.1 briggs * 17 1.1 briggs * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 1.1 briggs * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 1.1 briggs * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 1.1 briggs * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 1.1 briggs * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 1.1 briggs * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 1.1 briggs * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 1.1 briggs * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 1.1 briggs * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 1.1 briggs * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 1.1 briggs */ 28 1.1 briggs 29 1.1 briggs #include <machine/pio.h> 30 1.1 briggs 31 1.1 briggs #include <machine/openpicreg.h> 32 1.1 briggs 33 1.1 briggs void openpic_enable_irq __P((int, int)); 34 1.1 briggs void openpic_disable_irq __P((int)); 35 1.1 briggs void openpic_set_priority __P((int, int)); 36 1.1 briggs 37 1.1 briggs extern volatile unsigned char *openpic_base; 38 1.1 briggs 39 1.1 briggs static __inline u_int openpic_read __P((int)); 40 1.1 briggs static __inline void openpic_write __P((int, u_int)); 41 1.1 briggs static __inline int openpic_read_irq __P((int)); 42 1.1 briggs static __inline void openpic_eoi __P((int)); 43 1.1 briggs 44 1.1 briggs static __inline u_int 45 1.1 briggs openpic_read(reg) 46 1.1 briggs int reg; 47 1.1 briggs { 48 1.1 briggs volatile unsigned char *addr = openpic_base + reg; 49 1.1 briggs 50 1.1 briggs return in32rb(addr); 51 1.1 briggs } 52 1.1 briggs 53 1.1 briggs static __inline void 54 1.1 briggs openpic_write(reg, val) 55 1.1 briggs int reg; 56 1.1 briggs u_int val; 57 1.1 briggs { 58 1.1 briggs volatile unsigned char *addr = openpic_base + reg; 59 1.1 briggs 60 1.1 briggs out32rb(addr, val); 61 1.1 briggs } 62 1.1 briggs 63 1.1 briggs static __inline int 64 1.1 briggs openpic_read_irq(cpu) 65 1.1 briggs int cpu; 66 1.1 briggs { 67 1.1 briggs return openpic_read(OPENPIC_IACK(cpu)) & OPENPIC_VECTOR_MASK; 68 1.1 briggs } 69 1.1 briggs 70 1.1 briggs static __inline void 71 1.1 briggs openpic_eoi(cpu) 72 1.1 briggs int cpu; 73 1.1 briggs { 74 1.1 briggs openpic_write(OPENPIC_EOI(cpu), 0); 75 1.1 briggs openpic_read(OPENPIC_EOI(cpu)); 76 1.1 briggs } 77
Indexes created Thu Sep 25 16:09:42 GMT 2025