/*
* IRQ vector handles
*
* This file is subject to the terms and conditions of the GNU General Public
* License . See the file " COPYING " in the main directory of this archive
* for more details .
*
* Copyright ( C ) 1995 , 1996 , 1997 , 2003 by Ralf Baechle
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <asm /i8259.h>
#include <asm /irq_cpu.h>
#include <asm /irq_gt641xx.h>
#include <asm /gt64120.h>
#include <irq.h>
asmlinkage void plat_irq_dispatch(void )
{
unsigned pending = read_c0_status() & read_c0_cause() & ST0_IM;
int irq;
if (pending & CAUSEF_IP2)
gt641xx_irq_dispatch();
else if (pending & CAUSEF_IP6) {
irq = i8259_irq();
if (irq < 0 )
spurious_interrupt();
else
do_IRQ(irq);
} else if (pending & CAUSEF_IP3)
do_IRQ(MIPS_CPU_IRQ_BASE + 3 );
else if (pending & CAUSEF_IP4)
do_IRQ(MIPS_CPU_IRQ_BASE + 4 );
else if (pending & CAUSEF_IP5)
do_IRQ(MIPS_CPU_IRQ_BASE + 5 );
else if (pending & CAUSEF_IP7)
do_IRQ(MIPS_CPU_IRQ_BASE + 7 );
else
spurious_interrupt();
}
void __init arch_init_irq(void )
{
mips_cpu_irq_init();
gt641xx_irq_init();
init_i8259_irqs();
if (request_irq(GT641XX_CASCADE_IRQ, no_action, IRQF_NO_THREAD,
"cascade" , NULL)) {
pr_err("Failed to request irq %d (cascade)\n" ,
GT641XX_CASCADE_IRQ);
}
if (request_irq(I8259_CASCADE_IRQ, no_action, IRQF_NO_THREAD,
"cascade" , NULL)) {
pr_err("Failed to request irq %d (cascade)\n" ,
I8259_CASCADE_IRQ);
}
}
Messung V0.5 in Prozent C=97 H=93 G=94
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-09-27)
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