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openwrt-xburst/target/linux/brcm47xx-2.6/files/arch/mips/bcm947xx/irq.c

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/*
* Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/smp.h>
#include <linux/types.h>
#include <asm/cpu.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/irq_cpu.h>
void plat_irq_dispatch(void)
{
u32 cause;
cause = read_c0_cause() & read_c0_status() & CAUSEF_IP;
clear_c0_status(cause);
if (cause & CAUSEF_IP7)
do_IRQ(7);
if (cause & CAUSEF_IP2)
do_IRQ(2);
if (cause & CAUSEF_IP3)
do_IRQ(3);
if (cause & CAUSEF_IP4)
do_IRQ(4);
if (cause & CAUSEF_IP5)
do_IRQ(5);
if (cause & CAUSEF_IP6)
do_IRQ(6);
}
void __init arch_init_irq(void)
{
mips_cpu_irq_init(0);
}