1/* 2 * Copyright (c) 2003,2004,2008 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * Copyright (c) 1989, 1990 William F. Jolitz. 35 * Copyright (c) 1990 The Regents of the University of California. 36 * All rights reserved. 37 * 38 * This code is derived from software contributed to Berkeley by 39 * William Jolitz. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * $FreeBSD: src/sys/i386/isa/icu_ipl.s,v 1.6 1999/08/28 00:44:42 peter Exp $ 66 * $DragonFly: src/sys/platform/pc64/icu/icu_ipl.s,v 1.1 2008/08/29 17:07:16 dillon Exp $ 67 */ 68 69#include <machine/asmacros.h> 70#include <machine/segments.h> 71#include <machine/lock.h> 72#include <machine/psl.h> 73#include <machine/trap.h> 74#include <machine_base/icu/icu.h> 75#include <machine_base/icu/icu_ipl.h> 76 77#include <bus/isa/isareg.h> 78 79#include "assym.s" 80 81/* 82 * WARNING! SMP builds can use the ICU now so this code must be MP safe. 83 */ 84 85 .data 86 ALIGN_DATA 87 88 /* 89 * Interrupt mask for ICU interrupts, defaults to all hardware 90 * interrupts turned off. 91 */ 92 .p2align 2 /* MUST be 32bit aligned */ 93 94 .globl icu_imen 95icu_imen: 96 .long ICU_HWI_MASK 97 98 .text 99 SUPERALIGN_TEXT 100 101 /* 102 * Functions to enable and disable a hardware interrupt. Only 103 * 16 ICU interrupts exist. 104 * 105 * INTREN(irq:%edi) 106 * INTRDIS(irq:%edi) 107 */ 108ENTRY(ICU_INTRDIS) 109 ICU_IMASK_LOCK 110 movl %edi,%eax /* C argument */ 111 btsl %eax,icu_imen 112 movl icu_imen,%eax 113 outb %al,$IO_ICU1+ICU_IMR_OFFSET 114 mov %ah,%al 115 outb %al,$IO_ICU2+ICU_IMR_OFFSET 116 ICU_IMASK_UNLOCK 117 ret 118 119ENTRY(ICU_INTREN) 120 ICU_IMASK_LOCK 121 movl %edi,%eax /* C argument */ 122 btrl %eax,icu_imen 123 movl icu_imen,%eax 124 outb %al,$IO_ICU1+ICU_IMR_OFFSET 125 mov %ah,%al 126 outb %al,$IO_ICU2+ICU_IMR_OFFSET 127 ICU_IMASK_UNLOCK 128 ret 129