1 /* $NetBSD: intr.c,v 1.2 2013/08/18 21:57:01 matt 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 1.2 2013/08/18 21:57:01 matt Exp $"); 30 31 #include <sys/systm.h> 32 #include <sys/cpu.h> 33 34 #include <arm/locore.h> 35 36 #include <arm/pic/picvar.h> 37 38 void epoc32_irq_handler(void *); 39 40 int (*soc_find_pending_irqs)(void); 41 42 void 43 epoc32_irq_handler(void *frame) 44 { 45 struct cpu_info * const ci = curcpu(); 46 const int oldipl = ci->ci_cpl; 47 const uint32_t oldipl_mask = __BIT(oldipl); 48 int ipl_mask; 49 50 ci->ci_data.cpu_nintr++; 51 52 ipl_mask = soc_find_pending_irqs(); 53 54 /* 55 * Record the pending_ipls and deliver them if we can. 56 */ 57 if ((ipl_mask & ~oldipl_mask) > oldipl_mask) 58 pic_do_pending_ints(I32_bit, oldipl, frame); 59 } 60