1 /* $NetBSD: openpic.h,v 1.8 2012/02/01 02:03:51 matt Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 Tsubai Masanari. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <machine/pio.h> 30 31 #include <machine/openpicreg.h> 32 33 extern volatile unsigned char *openpic_base; 34 35 static __inline uint32_t openpic_read(u_int); 36 static __inline void openpic_write(u_int, uint32_t); 37 static __inline int openpic_read_irq(int); 38 static __inline void openpic_eoi(int); 39 40 static __inline uint32_t 41 openpic_read(u_int reg) 42 { 43 volatile uint8_t *addr = openpic_base + reg; 44 45 return in32rb(addr); 46 } 47 48 static __inline void 49 openpic_write(u_int reg, uint32_t val) 50 { 51 volatile uint8_t *addr = openpic_base + reg; 52 53 out32rb(addr, val); 54 } 55 56 static __inline int 57 openpic_read_irq(int cpu) 58 { 59 return openpic_read(OPENPIC_IACK(cpu)) & OPENPIC_VECTOR_MASK; 60 } 61 62 static __inline void 63 openpic_eoi(int cpu) 64 { 65 openpic_write(OPENPIC_EOI(cpu), 0); 66 openpic_read(OPENPIC_EOI(cpu)); 67 } 68