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/*
* linux/include/asm-arm/arch-ebsa110/irq.h
*
* Copyright (C) 1996-1998 Russell King
*
* 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.
*
* Changelog:
* 22-08-1998 RMK Restructured IRQ routines
*/
#define IRQ_MCLR ((volatile unsigned char *)0xf3000000)
#define IRQ_MSET ((volatile unsigned char *)0xf2c00000)
#define IRQ_MASK ((volatile unsigned char *)0xf2c00000)
#define fixup_irq(x) (x)
static void ebsa110_mask_and_ack_irq(unsigned int irq)
{
*IRQ_MCLR = 1 << irq;
}
static void ebsa110_mask_irq(unsigned int irq)
{
*IRQ_MCLR = 1 << irq;
}
static void ebsa110_unmask_irq(unsigned int irq)
{
*IRQ_MSET = 1 << irq;
}
static __inline__ void irq_init_irq(void)
{
unsigned long flags;
int irq;
save_flags_cli (flags);
*IRQ_MCLR = 0xff;
*IRQ_MSET = 0x55;
*IRQ_MSET = 0x00;
if (*IRQ_MASK != 0x55)
while (1);
*IRQ_MCLR = 0xff; /* clear all interrupt enables */
restore_flags (flags);
for (irq = 0; irq < NR_IRQS; irq++) {
irq_desc[irq].valid = 1;
irq_desc[irq].probe_ok = 1;
irq_desc[irq].mask_ack = ebsa110_mask_and_ack_irq;
irq_desc[irq].mask = ebsa110_mask_irq;
irq_desc[irq].unmask = ebsa110_unmask_irq;
}
}
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