50 lines
1.3 KiB
C
Executable file
50 lines
1.3 KiB
C
Executable file
/*
|
|
* Copyright (C) 2003 Ralf Baechle
|
|
*
|
|
* 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.
|
|
*
|
|
* Handler for RM7000 extended interrupts. These are a non-standard
|
|
* feature so we handle them separately from standard interrupts.
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#include <asm/irq_cpu.h>
|
|
#include <asm/mipsregs.h>
|
|
|
|
static inline void unmask_rm7k_irq(struct irq_data *d)
|
|
{
|
|
set_c0_intcontrol(0x100 << (d->irq - RM7K_CPU_IRQ_BASE));
|
|
}
|
|
|
|
static inline void mask_rm7k_irq(struct irq_data *d)
|
|
{
|
|
clear_c0_intcontrol(0x100 << (d->irq - RM7K_CPU_IRQ_BASE));
|
|
}
|
|
|
|
static struct irq_chip rm7k_irq_controller = {
|
|
.name = "RM7000",
|
|
.irq_ack = mask_rm7k_irq,
|
|
.irq_mask = mask_rm7k_irq,
|
|
.irq_mask_ack = mask_rm7k_irq,
|
|
.irq_unmask = unmask_rm7k_irq,
|
|
.irq_eoi = unmask_rm7k_irq
|
|
};
|
|
|
|
void __init rm7k_cpu_irq_init(void)
|
|
{
|
|
int base = RM7K_CPU_IRQ_BASE;
|
|
int i;
|
|
|
|
clear_c0_intcontrol(0x00000f00); /* Mask all */
|
|
|
|
for (i = base; i < base + 4; i++)
|
|
irq_set_chip_and_handler(i, &rm7k_irq_controller,
|
|
handle_percpu_irq);
|
|
}
|