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Diffstat (limited to 'sys/amd64/isa/icu.h')
| -rw-r--r-- | sys/amd64/isa/icu.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/sys/amd64/isa/icu.h b/sys/amd64/isa/icu.h new file mode 100644 index 0000000..13216b0 --- /dev/null +++ b/sys/amd64/isa/icu.h @@ -0,0 +1,97 @@ +/*- + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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 + * $Id: icu.h,v 1.2 1993/10/16 13:45:51 rgrimes Exp $ + */ + +/* + * AT/386 Interrupt Control constants + * W. Jolitz 8/89 + */ + +#ifndef __ICU__ +#define __ICU__ + +#ifndef LOCORE + +/* + * Interrupt "level" mechanism variables, masks, and macros + */ +extern unsigned imen; /* interrupt mask enable */ + +#define INTREN(s) (imen &= ~(s), SET_ICUS()) +#define INTRDIS(s) (imen |= (s), SET_ICUS()) +#define INTRMASK(msk,s) (msk |= (s)) +#if 0 +#define SET_ICUS() (outb(IO_ICU1 + 1, imen), outb(IU_ICU2 + 1, imen >> 8)) +#else +/* + * XXX - IO_ICU* are defined in isa.h, not icu.h, and nothing much bothers to + * include isa.h, while too many things include icu.h. + */ +#define SET_ICUS() (outb(0x21, imen), outb(0xa1, imen >> 8)) +#endif + +#endif + +/* + * Interrupt enable bits - in normal order of priority (which we change) + */ +#define IRQ0 0x0001 /* highest priority - timer */ +#define IRQ1 0x0002 +#define IRQ_SLAVE 0x0004 +#define IRQ8 0x0100 +#define IRQ9 0x0200 +#define IRQ2 IRQ9 +#define IRQ10 0x0400 +#define IRQ11 0x0800 +#define IRQ12 0x1000 +#define IRQ13 0x2000 +#define IRQ14 0x4000 +#define IRQ15 0x8000 +#define IRQ3 0x0008 /* this is highest after rotation */ +#define IRQ4 0x0010 +#define IRQ5 0x0020 +#define IRQ6 0x0040 +#define IRQ7 0x0080 /* lowest - parallel printer */ + +/* + * Interrupt Control offset into Interrupt descriptor table (IDT) + */ +#define ICU_OFFSET 32 /* 0-31 are processor exceptions */ +#define ICU_LEN 16 /* 32-47 are ISA interrupts */ + +#endif __ICU__ |
