2 * arch/mips/emma2rh/common/irq.c
3 * This file is common irq dispatcher.
5 * Copyright (C) NEC Electronics Corporation 2005-2006
7 * This file is based on the arch/mips/ddb5xxx/ddb5477/irq.c
9 * Copyright 2001 MontaVista Software Inc.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <linux/config.h>
26 #include <linux/init.h>
27 #include <linux/interrupt.h>
28 #include <linux/irq.h>
29 #include <linux/types.h>
31 #include <asm/i8259.h>
32 #include <asm/system.h>
33 #include <asm/mipsregs.h>
34 #include <asm/debug.h>
35 #include <asm/addrspace.h>
36 #include <asm/bootinfo.h>
38 #include <asm/emma2rh/emma2rh.h>
41 * the first level int-handler will jump here if it is a emma2rh irq
43 asmlinkage void emma2rh_irq_dispatch(struct pt_regs *regs)
49 intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_0)
50 & emma2rh_in32(EMMA2RH_BHIF_INT_EN_0);
52 #ifdef EMMA2RH_SW_CASCADE
54 (1 << ((EMMA2RH_SW_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) {
56 swIntStatus = emma2rh_in32(EMMA2RH_BHIF_SW_INT)
57 & emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN);
58 for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
59 if (swIntStatus & bitmask) {
60 do_IRQ(EMMA2RH_SW_IRQ_BASE + i, regs);
67 for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
68 if (intStatus & bitmask) {
69 do_IRQ(EMMA2RH_IRQ_BASE + i, regs);
74 intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_1)
75 & emma2rh_in32(EMMA2RH_BHIF_INT_EN_1);
77 #ifdef EMMA2RH_GPIO_CASCADE
79 (1 << ((EMMA2RH_GPIO_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) {
81 gpioIntStatus = emma2rh_in32(EMMA2RH_GPIO_INT_ST)
82 & emma2rh_in32(EMMA2RH_GPIO_INT_MASK);
83 for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
84 if (gpioIntStatus & bitmask) {
85 do_IRQ(EMMA2RH_GPIO_IRQ_BASE + i, regs);
92 for (i = 32, bitmask = 1; i < 64; i++, bitmask <<= 1) {
93 if (intStatus & bitmask) {
94 do_IRQ(EMMA2RH_IRQ_BASE + i, regs);
99 intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_2)
100 & emma2rh_in32(EMMA2RH_BHIF_INT_EN_2);
102 for (i = 64, bitmask = 1; i < 96; i++, bitmask <<= 1) {
103 if (intStatus & bitmask) {
104 do_IRQ(EMMA2RH_IRQ_BASE + i, regs);