1 /* $NetBSD: pic_i8259.c,v 1.7 2017/06/01 02:45:07 chs 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_i8259.c,v 1.7 2017/06/01 02:45:07 chs Exp $");
34
35 #include <sys/param.h>
36 #include <sys/kmem.h>
37 #include <sys/kernel.h>
38 #include <sys/intr.h>
39
40 #include <uvm/uvm_extern.h>
41
42 #include <machine/pio.h>
43
44 #include <powerpc/pic/picvar.h>
45
46 #include <dev/isa/isareg.h>
47 #include <dev/isa/isavar.h>
48
49 void i8259_initialize(void);
50
51 struct pic_ops *
setup_i8259(void)52 setup_i8259(void)
53 {
54 struct i8259_ops *i8259;
55 struct pic_ops *pic;
56
57 i8259 = kmem_alloc(sizeof(*i8259), KM_SLEEP);
58 pic = &i8259->pic;
59
60 pic->pic_numintrs = 16;
61 pic->pic_cookie = (void *)NULL;
62 pic->pic_enable_irq = i8259_enable_irq;
63 pic->pic_reenable_irq = i8259_enable_irq;
64 pic->pic_disable_irq = i8259_disable_irq;
65 pic->pic_get_irq = i8259_get_irq;
66 pic->pic_ack_irq = i8259_ack_irq;
67 pic->pic_establish_irq = dummy_pic_establish_intr;
68 pic->pic_finish_setup = NULL;
69 strcpy(pic->pic_name, "i8259");
70 pic_add(pic);
71 i8259->pending_events = 0;
72 i8259->enable_mask = 0xffffffff;
73 i8259->irqs = 0;
74
75 i8259_initialize();
76
77 return pic;
78 }
79