1 /* $NetBSD: pic_cpc700.c,v 1.8 2020/11/21 15:42:20 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2007 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Tim Rightnour
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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: pic_cpc700.c,v 1.8 2020/11/21 15:42:20 thorpej Exp $");
34
35 #include <sys/param.h>
36 #include <sys/kmem.h>
37 #include <sys/kernel.h>
38
39 #include <machine/pio.h>
40 #include <machine/intr.h>
41 #include <sys/bus.h>
42
43 #include <arch/powerpc/pic/picvar.h>
44
45 #include <dev/ic/cpc700reg.h>
46 #include <dev/ic/cpc700uic.h>
47
48 static void cpc700_pic_enable_irq(struct pic_ops *, int, int);
49 static void cpc700_pic_disable_irq(struct pic_ops *, int);
50 static int cpc700_get_irq(struct pic_ops *, int);
51 static void cpc700_ack_irq(struct pic_ops *, int);
52
53 struct cpc700_ops {
54 struct pic_ops pic;
55 };
56
57 struct pic_ops *
setup_cpc700(void)58 setup_cpc700(void)
59 {
60 struct cpc700_ops *cpc700;
61 struct pic_ops *pic;
62
63 cpc700 = kmem_alloc(sizeof(struct cpc700_ops), KM_SLEEP);
64 pic = &cpc700->pic;
65
66 pic->pic_numintrs = 32;
67 pic->pic_cookie = (void *)NULL;
68 pic->pic_enable_irq = cpc700_pic_enable_irq;
69 pic->pic_reenable_irq = cpc700_pic_enable_irq;
70 pic->pic_disable_irq = cpc700_pic_disable_irq;
71 pic->pic_get_irq = cpc700_get_irq;
72 pic->pic_ack_irq = cpc700_ack_irq;
73 pic->pic_establish_irq = dummy_pic_establish_intr;
74 strcpy(pic->pic_name, "cpc700");
75 pic_add(pic);
76
77 return pic;
78 }
79
80 static void
cpc700_pic_enable_irq(struct pic_ops * pic,int irq,int type)81 cpc700_pic_enable_irq(struct pic_ops *pic, int irq, int type)
82 {
83 cpc700_enable_irq(irq);
84 }
85
86 static void
cpc700_pic_disable_irq(struct pic_ops * pic,int irq)87 cpc700_pic_disable_irq(struct pic_ops *pic, int irq)
88 {
89 cpc700_disable_irq(irq);
90 }
91
92 static int
cpc700_get_irq(struct pic_ops * pic,int dummy)93 cpc700_get_irq(struct pic_ops *pic, int dummy)
94 {
95 int irq;
96
97 irq = cpc700_read_irq();
98 if (irq < 0)
99 return 255;
100 return irq;
101 }
102
103 static void
cpc700_ack_irq(struct pic_ops * pic,int irq)104 cpc700_ack_irq(struct pic_ops *pic, int irq)
105 {
106 cpc700_eoi(irq);
107 }
108