119537c092
o adds missing ST0_IM masks, which caused the logging of valid interrupts as spurious o stops pnx8550 to log every interrupt as spurious o adds cause register masks for ip22/ip32, which caused handling of masked interrupts o removes some superfluous parentheses in the SNI interrupt code Signed-Off-By: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/*
|
|
* Copyright (C) 2000 RidgeRun, Inc.
|
|
* Author: RidgeRun, Inc.
|
|
* glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
|
|
*
|
|
* Copyright 2001 MontaVista Software Inc.
|
|
* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
|
|
* Copyright (C) 2000, 01, 05 Ralf Baechle (ralf@linux-mips.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/kernel_stat.h>
|
|
#include <linux/module.h>
|
|
#include <linux/signal.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/types.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/timex.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/random.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/mv643xx.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/io.h>
|
|
#include <asm/irq_cpu.h>
|
|
#include <asm/mipsregs.h>
|
|
#include <asm/system.h>
|
|
|
|
extern void uart_irq_init(void);
|
|
extern void cpci_irq_init(void);
|
|
|
|
static struct irqaction cascade_fpga = {
|
|
no_action, IRQF_DISABLED, CPU_MASK_NONE, "cascade via FPGA", NULL, NULL
|
|
};
|
|
|
|
static struct irqaction cascade_mv64340 = {
|
|
no_action, IRQF_DISABLED, CPU_MASK_NONE, "cascade via MV64340", NULL, NULL
|
|
};
|
|
|
|
extern void ll_uart_irq(void);
|
|
extern void ll_cpci_irq(void);
|
|
|
|
asmlinkage void plat_irq_dispatch(void)
|
|
{
|
|
unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
|
|
|
|
if (pending & STATUSF_IP0)
|
|
do_IRQ(0);
|
|
else if (pending & STATUSF_IP1)
|
|
do_IRQ(1);
|
|
else if (pending & STATUSF_IP2)
|
|
do_IRQ(2);
|
|
else if (pending & STATUSF_IP3)
|
|
ll_uart_irq();
|
|
else if (pending & STATUSF_IP4)
|
|
do_IRQ(4);
|
|
else if (pending & STATUSF_IP5)
|
|
ll_cpci_irq();
|
|
else if (pending & STATUSF_IP6)
|
|
ll_mv64340_irq();
|
|
else if (pending & STATUSF_IP7)
|
|
do_IRQ(7);
|
|
else
|
|
spurious_interrupt();
|
|
}
|
|
|
|
void __init arch_init_irq(void)
|
|
{
|
|
/*
|
|
* Clear all of the interrupts while we change the able around a bit.
|
|
* int-handler is not on bootstrap
|
|
*/
|
|
clear_c0_status(ST0_IM);
|
|
|
|
mips_cpu_irq_init();
|
|
|
|
/* set up the cascading interrupts */
|
|
setup_irq(3, &cascade_fpga);
|
|
setup_irq(5, &cascade_fpga);
|
|
setup_irq(6, &cascade_mv64340);
|
|
|
|
mv64340_irq_init(16);
|
|
uart_irq_init();
|
|
cpci_irq_init();
|
|
}
|