132580301SAttilio Rao /*- 232580301SAttilio Rao * Copyright (c) 1990 The Regents of the University of California. 332580301SAttilio Rao * All rights reserved. 432580301SAttilio Rao * 532580301SAttilio Rao * This code is derived from software contributed to Berkeley by 632580301SAttilio Rao * William Jolitz. 732580301SAttilio Rao * 832580301SAttilio Rao * Redistribution and use in source and binary forms, with or without 932580301SAttilio Rao * modification, are permitted provided that the following conditions 1032580301SAttilio Rao * are met: 1132580301SAttilio Rao * 1. Redistributions of source code must retain the above copyright 1232580301SAttilio Rao * notice, this list of conditions and the following disclaimer. 1332580301SAttilio Rao * 2. Redistributions in binary form must reproduce the above copyright 1432580301SAttilio Rao * notice, this list of conditions and the following disclaimer in the 1532580301SAttilio Rao * documentation and/or other materials provided with the distribution. 16fbbd9655SWarner Losh * 3. Neither the name of the University nor the names of its contributors 1732580301SAttilio Rao * may be used to endorse or promote products derived from this software 1832580301SAttilio Rao * without specific prior written permission. 1932580301SAttilio Rao * 2032580301SAttilio Rao * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2132580301SAttilio Rao * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2232580301SAttilio Rao * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2332580301SAttilio Rao * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2432580301SAttilio Rao * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2532580301SAttilio Rao * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2632580301SAttilio Rao * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2732580301SAttilio Rao * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2832580301SAttilio Rao * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2932580301SAttilio Rao * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3032580301SAttilio Rao * SUCH DAMAGE. 3132580301SAttilio Rao * 3232580301SAttilio Rao * from: @(#)icu.h 5.6 (Berkeley) 5/9/91 3332580301SAttilio Rao * $FreeBSD$ 3432580301SAttilio Rao */ 3532580301SAttilio Rao 3632580301SAttilio Rao /* 3732580301SAttilio Rao * AT/386 Interrupt Control constants 3832580301SAttilio Rao * W. Jolitz 8/89 3932580301SAttilio Rao */ 4032580301SAttilio Rao 4132580301SAttilio Rao #ifndef _X86_ISA_ICU_H_ 4232580301SAttilio Rao #define _X86_ISA_ICU_H_ 4332580301SAttilio Rao 4432580301SAttilio Rao #define ICU_IMR_OFFSET 1 4532580301SAttilio Rao 46dff207f8SYoshihiro Takahashi /* 47dff207f8SYoshihiro Takahashi * PC-AT machines wire the slave PIC to pin 2 on the master PIC. 48dff207f8SYoshihiro Takahashi */ 49dff207f8SYoshihiro Takahashi #define ICU_SLAVEID 2 50dff207f8SYoshihiro Takahashi 51dff207f8SYoshihiro Takahashi /* 52dff207f8SYoshihiro Takahashi * Determine the base master and slave modes not including auto EOI support. 53dff207f8SYoshihiro Takahashi * All machines that FreeBSD supports use 8086 mode. 54dff207f8SYoshihiro Takahashi */ 55dff207f8SYoshihiro Takahashi #define BASE_MASTER_MODE ICW4_8086 56dff207f8SYoshihiro Takahashi #define BASE_SLAVE_MODE ICW4_8086 57dff207f8SYoshihiro Takahashi 58dff207f8SYoshihiro Takahashi /* Enable automatic EOI if requested. */ 59dff207f8SYoshihiro Takahashi #ifdef AUTO_EOI_1 60dff207f8SYoshihiro Takahashi #define MASTER_MODE (BASE_MASTER_MODE | ICW4_AEOI) 61dff207f8SYoshihiro Takahashi #else 62dff207f8SYoshihiro Takahashi #define MASTER_MODE BASE_MASTER_MODE 63dff207f8SYoshihiro Takahashi #endif 64dff207f8SYoshihiro Takahashi #ifdef AUTO_EOI_2 65dff207f8SYoshihiro Takahashi #define SLAVE_MODE (BASE_SLAVE_MODE | ICW4_AEOI) 66dff207f8SYoshihiro Takahashi #else 67dff207f8SYoshihiro Takahashi #define SLAVE_MODE BASE_SLAVE_MODE 68dff207f8SYoshihiro Takahashi #endif 69dff207f8SYoshihiro Takahashi 70dff207f8SYoshihiro Takahashi #define IRQ_MASK(irq) (1 << (irq)) 71dff207f8SYoshihiro Takahashi #define IMEN_MASK(ai) (IRQ_MASK((ai)->at_irq)) 72dff207f8SYoshihiro Takahashi 7332580301SAttilio Rao void atpic_handle_intr(u_int vector, struct trapframe *frame); 7432580301SAttilio Rao void atpic_startup(void); 7532580301SAttilio Rao 7632580301SAttilio Rao #endif /* !_X86_ISA_ICU_H_ */ 77