mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-17 10:02:48 +02:00
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
|
/*
|
||
|
|
* Ralink RT3662/RT3883 SoC specific interrupt handling
|
||
|
|
*
|
||
|
|
* Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify it
|
||
|
|
* under the terms of the GNU General Public License version 2 as published
|
||
|
|
* by the Free Software Foundation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
#include <linux/irq.h>
|
||
|
|
|
||
|
|
#include <asm/irq_cpu.h>
|
||
|
|
#include <asm/mipsregs.h>
|
||
|
|
|
||
|
|
#include <asm/mach-ralink/common.h>
|
||
|
|
#include <asm/mach-ralink/rt3883.h>
|
||
|
|
#include <asm/mach-ralink/rt3883_regs.h>
|
||
|
|
|
||
|
|
static void rt3883_intc_irq_dispatch(void)
|
||
|
|
{
|
||
|
|
u32 pending;
|
||
|
|
|
||
|
|
pending = ramips_intc_get_status();
|
||
|
|
|
||
|
|
if (pending & RT3883_INTC_INT_TIMER0)
|
||
|
|
do_IRQ(RT3883_INTC_IRQ_TIMER0);
|
||
|
|
|
||
|
|
else if (pending & RT3883_INTC_INT_TIMER1)
|
||
|
|
do_IRQ(RT3883_INTC_IRQ_TIMER1);
|
||
|
|
|
||
|
|
else if (pending & RT3883_INTC_INT_UART0)
|
||
|
|
do_IRQ(RT3883_INTC_IRQ_UART0);
|
||
|
|
|
||
|
|
else if (pending & RT3883_INTC_INT_UART1)
|
||
|
|
do_IRQ(RT3883_INTC_IRQ_UART1);
|
||
|
|
|
||
|
|
else if (pending & RT3883_INTC_INT_PERFC)
|
||
|
|
do_IRQ(RT3883_INTC_IRQ_PERFC);
|
||
|
|
|
||
|
|
else if (pending & RT3883_INTC_INT_UHST)
|
||
|
|
do_IRQ(RT3883_INTC_IRQ_UHST);
|
||
|
|
|
||
|
|
/* TODO: handle PIO interrupts as well */
|
||
|
|
|
||
|
|
else
|
||
|
|
spurious_interrupt();
|
||
|
|
}
|
||
|
|
|
||
|
|
asmlinkage void plat_irq_dispatch(void)
|
||
|
|
{
|
||
|
|
unsigned long pending;
|
||
|
|
|
||
|
|
pending = read_c0_status() & read_c0_cause() & ST0_IM;
|
||
|
|
|
||
|
|
if (pending & STATUSF_IP7)
|
||
|
|
do_IRQ(RT3883_CPU_IRQ_COUNTER);
|
||
|
|
|
||
|
|
else if (pending & STATUSF_IP5)
|
||
|
|
do_IRQ(RT3883_CPU_IRQ_FE);
|
||
|
|
|
||
|
|
else if (pending & STATUSF_IP6)
|
||
|
|
do_IRQ(RT3883_CPU_IRQ_WLAN);
|
||
|
|
|
||
|
|
else if (pending & STATUSF_IP4)
|
||
|
|
do_IRQ(RT3883_CPU_IRQ_PCI);
|
||
|
|
|
||
|
|
else if (pending & STATUSF_IP2)
|
||
|
|
rt3883_intc_irq_dispatch();
|
||
|
|
|
||
|
|
else
|
||
|
|
spurious_interrupt();
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init arch_init_irq(void)
|
||
|
|
{
|
||
|
|
mips_cpu_irq_init();
|
||
|
|
ramips_intc_irq_init(RT3883_INTC_BASE, RT3883_CPU_IRQ_INTC,
|
||
|
|
RT3883_INTC_IRQ_BASE);
|
||
|
|
cp0_perfcount_irq = RT3883_INTC_IRQ_PERFC;
|
||
|
|
}
|