We are already serialized when nv_ospackettx() is called, so it must
[dragonfly.git] / sys / platform / pc32 / icu / icu_abi.c
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1/*
2 * Copyright (c) 2005 The DragonFly Project. All rights reserved.
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3 * Copyright (c) 1991 The Regents of the University of California.
4 * All rights reserved.
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5 *
6 * This code is derived from software contributed to The DragonFly Project
7 * by Matthew Dillon <dillon@backplane.com>
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8 *
9 * This code is derived from software contributed to Berkeley by
10 * William Jolitz.
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11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in
20 * the documentation and/or other materials provided with the
21 * distribution.
22 * 3. Neither the name of The DragonFly Project nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific, prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
29 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
30 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
31 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
32 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
33 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
34 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
35 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
36 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
35408d22 39 * $DragonFly: src/sys/platform/pc32/icu/icu_abi.c,v 1.6 2005/11/03 23:45:12 dillon Exp $
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40 */
41
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42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/kernel.h>
45#include <sys/machintr.h>
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46#include <sys/interrupt.h>
47#include <sys/bus.h>
48
49#include <machine/segments.h>
50#include <machine/md_var.h>
10ff1029 51#include <i386/isa/intr_machdep.h>
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52
53#include "icu.h"
54#include "icu_ipl.h"
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55
56#ifndef APIC_IO
57
58extern void ICU_INTREN(int);
59extern void ICU_INTRDIS(int);
60
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61extern inthand_t
62 IDTVEC(icu_fastintr0), IDTVEC(icu_fastintr1),
63 IDTVEC(icu_fastintr2), IDTVEC(icu_fastintr3),
64 IDTVEC(icu_fastintr4), IDTVEC(icu_fastintr5),
65 IDTVEC(icu_fastintr6), IDTVEC(icu_fastintr7),
66 IDTVEC(icu_fastintr8), IDTVEC(icu_fastintr9),
67 IDTVEC(icu_fastintr10), IDTVEC(icu_fastintr11),
68 IDTVEC(icu_fastintr12), IDTVEC(icu_fastintr13),
69 IDTVEC(icu_fastintr14), IDTVEC(icu_fastintr15);
70
71extern inthand_t
72 IDTVEC(icu_slowintr0), IDTVEC(icu_slowintr1),
73 IDTVEC(icu_slowintr2), IDTVEC(icu_slowintr3),
74 IDTVEC(icu_slowintr4), IDTVEC(icu_slowintr5),
75 IDTVEC(icu_slowintr6), IDTVEC(icu_slowintr7),
76 IDTVEC(icu_slowintr8), IDTVEC(icu_slowintr9),
77 IDTVEC(icu_slowintr10), IDTVEC(icu_slowintr11),
78 IDTVEC(icu_slowintr12), IDTVEC(icu_slowintr13),
79 IDTVEC(icu_slowintr14), IDTVEC(icu_slowintr15);
80
10ff1029 81static int icu_vectorctl(int, int, int);
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82static int icu_setvar(int, const void *);
83static int icu_getvar(int, void *);
84static void icu_finalize(void);
85
5f456c40 86static inthand_t *icu_fastintr[ICU_HWI_VECTORS] = {
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87 &IDTVEC(icu_fastintr0), &IDTVEC(icu_fastintr1),
88 &IDTVEC(icu_fastintr2), &IDTVEC(icu_fastintr3),
89 &IDTVEC(icu_fastintr4), &IDTVEC(icu_fastintr5),
90 &IDTVEC(icu_fastintr6), &IDTVEC(icu_fastintr7),
91 &IDTVEC(icu_fastintr8), &IDTVEC(icu_fastintr9),
92 &IDTVEC(icu_fastintr10), &IDTVEC(icu_fastintr11),
93 &IDTVEC(icu_fastintr12), &IDTVEC(icu_fastintr13),
94 &IDTVEC(icu_fastintr14), &IDTVEC(icu_fastintr15)
95};
96
5f456c40 97static inthand_t *icu_slowintr[ICU_HWI_VECTORS] = {
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98 &IDTVEC(icu_slowintr0), &IDTVEC(icu_slowintr1),
99 &IDTVEC(icu_slowintr2), &IDTVEC(icu_slowintr3),
100 &IDTVEC(icu_slowintr4), &IDTVEC(icu_slowintr5),
101 &IDTVEC(icu_slowintr6), &IDTVEC(icu_slowintr7),
102 &IDTVEC(icu_slowintr8), &IDTVEC(icu_slowintr9),
103 &IDTVEC(icu_slowintr10), &IDTVEC(icu_slowintr11),
104 &IDTVEC(icu_slowintr12), &IDTVEC(icu_slowintr13),
105 &IDTVEC(icu_slowintr14), &IDTVEC(icu_slowintr15)
106};
107
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108struct machintr_abi MachIntrABI = {
109 MACHINTR_ICU,
110 ICU_INTRDIS,
111 ICU_INTREN,
10ff1029 112 icu_vectorctl,
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113 icu_setvar,
114 icu_getvar,
115 icu_finalize
116};
117
118static
119int
120icu_setvar(int varid __unused, const void *buf __unused)
121{
122 return (ENOENT);
123}
124
125static
126int
127icu_getvar(int varid __unused, void *buf __unused)
128{
129 return (ENOENT);
130}
131
132static void
133icu_finalize(void)
134{
135 machintr_intren(ICU_IRQ_SLAVE);
136}
137
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138static
139int
140icu_vectorctl(int op, int intr, int flags)
141{
142 int error;
143 u_long ef;
144
5f456c40 145 if (intr < 0 || intr >= ICU_HWI_VECTORS || intr == ICU_IRQ_SLAVE)
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146 return (EINVAL);
147
148 ef = read_eflags();
149 cpu_disable_intr();
150 error = 0;
151
152 switch(op) {
153 case MACHINTR_VECTOR_SETUP:
5f456c40 154 setidt(IDT_OFFSET + intr,
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155 flags & INTR_FAST ? icu_fastintr[intr] : icu_slowintr[intr],
156 SDT_SYS386IGT, SEL_KPL, GSEL(GCODE_SEL, SEL_KPL));
157 machintr_intren(intr);
158 break;
159 case MACHINTR_VECTOR_TEARDOWN:
35408d22 160 case MACHINTR_VECTOR_SETDEFAULT:
5f456c40 161 setidt(IDT_OFFSET + intr, icu_slowintr[intr], SDT_SYS386IGT, SEL_KPL,
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162 GSEL(GCODE_SEL, SEL_KPL));
163 machintr_intrdis(intr);
164 break;
165 default:
166 error = EOPNOTSUPP;
167 break;
168 }
169 write_eflags(ef);
170 return (error);
171}
172
37e7efec 173#endif