Generic MP rollup work.
[dragonfly.git] / sys / platform / pc32 / icu / icu_ipl.s
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1/*-
2 * Copyright (c) 1989, 1990 William F. Jolitz.
3 * Copyright (c) 1990 The Regents of the University of California.
4 * All rights reserved.
ef0fdad1 5 * Copyright (c) 2003 Matthew Dillon
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6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * $FreeBSD: src/sys/i386/isa/icu_ipl.s,v 1.6 1999/08/28 00:44:42 peter Exp $
72740893 39 * $DragonFly: src/sys/platform/pc32/icu/icu_ipl.s,v 1.7 2003/07/04 00:32:28 dillon Exp $
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40 */
41
42 .data
43 ALIGN_DATA
984263bc 44
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45 /*
46 * Interrupt mask for ICU interrupts, defaults to all hardware
47 * interrupts turned off.
48 */
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49 .p2align 2 /* MUST be 32bit aligned */
50
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51 .globl imen
52imen: .long HWI_MASK
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54 .text
55 SUPERALIGN_TEXT
56
984263bc 57 /*
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58 * Functions to enable and disable a hardware interrupt. Only
59 * 16 ICU interrupts exist.
60 *
61 * INTREN(1 << irq) (one interrupt only)
62 * INTDIS(1 << irq) (one interrupt only)
984263bc 63 */
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64ENTRY(INTRDIS)
65 movl 4(%esp),%eax
2954c92f 66 orl %eax,imen
984263bc 67 pushfl
984263bc 68 cli
2954c92f 69 movl imen,%eax
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70 outb %al,$IO_ICU1+ICU_IMR_OFFSET
71 mov %ah,%al
72 outb %al,$IO_ICU2+ICU_IMR_OFFSET
73 popfl
74 ret
984263bc 75
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76ENTRY(INTREN)
77 movl 4(%esp),%eax
78 notl %eax
2954c92f 79 andl %eax,imen
984263bc 80 pushfl
984263bc 81 cli
2954c92f 82 movl imen,%eax
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83 outb %al,$IO_ICU1+ICU_IMR_OFFSET
84 mov %ah,%al
85 outb %al,$IO_ICU2+ICU_IMR_OFFSET
86 popfl
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87 ret
88
ef0fdad1 89