1/*	$NetBSD: intr.c,v 1.3 2021/07/24 07:59:10 skrll Exp $	*/
2/*
3 * Copyright (c) 2012 KIYOHARA Takashi
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: intr.c,v 1.3 2021/07/24 07:59:10 skrll Exp $");
30
31#include <sys/param.h>
32#include <sys/systm.h>
33#include <sys/cpu.h>
34
35#include <arm/locore.h>
36
37#include <arm/pic/picvar.h>
38
39void epoc32_irq_handler(void *);
40
41int (*soc_find_pending_irqs)(void);
42
43void
44epoc32_irq_handler(void *frame)
45{
46	struct cpu_info * const ci = curcpu();
47	const int oldipl = ci->ci_cpl;
48	const uint32_t oldipl_mask = __BIT(oldipl);
49	int ipl_mask;
50
51	ci->ci_data.cpu_nintr++;
52
53	ipl_mask = soc_find_pending_irqs();
54
55	/*
56	 * Record the pending_ipls and deliver them if we can.
57	 */
58	if ((ipl_mask & ~oldipl_mask) > oldipl_mask)
59		pic_do_pending_ints(I32_bit, oldipl, frame);
60}
61