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
39 void epoc32_irq_handler(void *);
40
41 int (*soc_find_pending_irqs)(void);
42
43 void
epoc32_irq_handler(void * frame)44 epoc32_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