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/*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)icu.h 5.6 (Berkeley) 5/9/91 * $FreeBSD: release/9.1.0/sys/x86/isa/icu.h 234144 2012-04-11 20:04:31Z jhb $ */ /* * AT/386 Interrupt Control constants * W. Jolitz 8/89 */ #ifndef _X86_ISA_ICU_H_ #define _X86_ISA_ICU_H_ #ifdef PC98 #define ICU_IMR_OFFSET 2 #else #define ICU_IMR_OFFSET 1 #endif /* * PC-98 machines wire the slave 8259A to pin 7 on the master PIC, and * PC-AT machines wire the slave PIC to pin 2 on the master PIC. */ #ifdef PC98 #define ICU_SLAVEID 7 #else #define ICU_SLAVEID 2 #endif /* * Determine the base master and slave modes not including auto EOI support. * All machines that FreeBSD supports use 8086 mode. */ #ifdef PC98 /* * PC-98 machines do not support auto EOI on the second PIC. Also, it * seems that PC-98 machine PICs use buffered mode, and the master PIC * uses special fully nested mode. */ #define BASE_MASTER_MODE (ICW4_SFNM | ICW4_BUF | ICW4_MS | ICW4_8086) #define BASE_SLAVE_MODE (ICW4_BUF | ICW4_8086) #else #define BASE_MASTER_MODE ICW4_8086 #define BASE_SLAVE_MODE ICW4_8086 #endif /* Enable automatic EOI if requested. */ #ifdef AUTO_EOI_1 #define MASTER_MODE (BASE_MASTER_MODE | ICW4_AEOI) #else #define MASTER_MODE BASE_MASTER_MODE #endif #ifdef AUTO_EOI_2 #define SLAVE_MODE (BASE_SLAVE_MODE | ICW4_AEOI) #else #define SLAVE_MODE BASE_SLAVE_MODE #endif #define IRQ_MASK(irq) (1 << (irq)) #define IMEN_MASK(ai) (IRQ_MASK((ai)->at_irq)) void atpic_handle_intr(u_int vector, struct trapframe *frame); void atpic_startup(void); #endif /* !_X86_ISA_ICU_H_ */