1 /* $NetBSD: sa11x0_irqhandler.c,v 1.5 2003/08/07 16:26:54 agc Exp $ */
2
3 /*-
4 * Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to the NetBSD Foundation
8 * by IWAMOTO Toshihiro.
9 *
10 * This code is derived from software contributed to The NetBSD Foundation
11 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
12 * Simulation Facility, NASA Ames Research Center.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. All advertising materials mentioning features or use of this software
23 * must display the following acknowledgement:
24 * This product includes software developed by the NetBSD
25 * Foundation, Inc. and its contributors.
26 * 4. Neither the name of The NetBSD Foundation nor the names of its
27 * contributors may be used to endorse or promote products derived
28 * from this software without specific prior written permission.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
31 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
32 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
33 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
34 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
35 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
38 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
40 * POSSIBILITY OF SUCH DAMAGE.
41 */
42
43 /*-
44 * Copyright (c) 1991 The Regents of the University of California.
45 * All rights reserved.
46 *
47 * This code is derived from software contributed to Berkeley by
48 * William Jolitz.
49 *
50 * Redistribution and use in source and binary forms, with or without
51 * modification, are permitted provided that the following conditions
52 * are met:
53 * 1. Redistributions of source code must retain the above copyright
54 * notice, this list of conditions and the following disclaimer.
55 * 2. Redistributions in binary form must reproduce the above copyright
56 * notice, this list of conditions and the following disclaimer in the
57 * documentation and/or other materials provided with the distribution.
58 * 3. Neither the name of the University nor the names of its contributors
59 * may be used to endorse or promote products derived from this software
60 * without specific prior written permission.
61 *
62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
72 * SUCH DAMAGE.
73 *
74 * @(#)isa.c 7.2 (Berkeley) 5/13/91
75 */
76
77
78 #include <sys/cdefs.h>
79 __FBSDID("$FreeBSD: src/sys/arm/sa11x0/sa11x0_irqhandler.c,v 1.6 2006/10/21 04:25:00 kevlo Exp $");
80
81 #include <sys/param.h>
82 #include <sys/kernel.h>
83 #include <sys/systm.h>
84 #include <sys/syslog.h>
85 #include <sys/malloc.h>
86 #include <sys/bus.h>
87 #include <sys/interrupt.h>
88 #include <sys/rman.h>
89
90 #include <vm/vm.h>
91 #include <vm/vm_extern.h>
92
93 #include <arm/sa11x0/sa11x0_reg.h>
94 #include <arm/sa11x0/sa11x0_var.h>
95
96 #include <machine/cpu.h>
97 #include <machine/intr.h>
98
99 #define NIRQS 0x20
100 struct intrhand *irqhandlers[NIRQS];
101
102 int current_intr_depth;
103 extern struct sa11x0_softc *sa11x0_softc;
104
105
106 static uint32_t sa11x0_irq_mask = 0xfffffff;
107
108 extern vm_offset_t saipic_base;
109
110 int
111 arm_get_next_irq()
112 {
113 int irq;
114
115 if ((irq = (bus_space_read_4(sa11x0_softc->sc_iot, sa11x0_softc->sc_ioh,
116 SAIPIC_IP) &
117 sa11x0_irq_mask)) != 0)
118 return (ffs(irq) - 1);
119 return (-1);
120 }
121
122 void
123 arm_mask_irq(uintptr_t irq)
124 {
125
126 sa11x0_irq_mask &= ~(1 << irq);
127 __asm __volatile("str %0, [%1, #0x04]" /* SAIPIC_MR */
128 : : "r" (sa11x0_irq_mask), "r" (saipic_base));
129 }
130
131 void
132 arm_unmask_irq(uintptr_t irq)
133 {
134
135 sa11x0_irq_mask |= (1 << irq);
136 __asm __volatile("str %0, [%1, #0x04]" /* SAIPIC_MR */
137 : : "r" (sa11x0_irq_mask), "r" (saipic_base));
138 }
139
140 void stray_irqhandler(void *);
141
142
143
144 void
145 stray_irqhandler(void *p)
146 {
147
148 printf("stray interrupt %p\n", p);
149 }
150 /* End of irqhandler.c */
151 Cache object: 20f5738d9673e1ade5af0cde2b4a17cd
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