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/*
* include/asm-arm/arch-nexuspci/irq.h
*
* Copyright (C) 1998, 1999, 2000 Philip Blundell
*/
/*
* 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.
*/
#include <asm/io.h>
#define fixup_irq(x) (x)
extern unsigned long soft_irq_mask;
static const unsigned char irq_cmd[] =
{
INTCONT_IRQ_DUART,
INTCONT_IRQ_PLX,
INTCONT_IRQ_D,
INTCONT_IRQ_C,
INTCONT_IRQ_B,
INTCONT_IRQ_A,
INTCONT_IRQ_SYSERR
};
static void ftvpci_mask_irq(unsigned int irq)
{
__raw_writel(irq_cmd[irq], INTCONT_BASE);
soft_irq_mask &= ~(1<<irq);
}
static void ftvpci_unmask_irq(unsigned int irq)
{
soft_irq_mask |= (1<<irq);
__raw_writel(irq_cmd[irq] | 1, INTCONT_BASE);
}
static __inline__ void irq_init_irq(void)
{
unsigned int i;
/* Mask all FIQs */
__raw_writel(INTCONT_FIQ_PLX, INTCONT_BASE);
__raw_writel(INTCONT_FIQ_D, INTCONT_BASE);
__raw_writel(INTCONT_FIQ_C, INTCONT_BASE);
__raw_writel(INTCONT_FIQ_B, INTCONT_BASE);
__raw_writel(INTCONT_FIQ_A, INTCONT_BASE);
__raw_writel(INTCONT_FIQ_SYSERR, INTCONT_BASE);
/* Disable all interrupts initially. */
for (i = 0; i < NR_IRQS; i++) {
if (i >= FIRST_IRQ && i <= LAST_IRQ) {
irq_desc[i].valid = 1;
irq_desc[i].probe_ok = 1;
irq_desc[i].mask_ack = ftvpci_mask_irq;
irq_desc[i].mask = ftvpci_mask_irq;
irq_desc[i].unmask = ftvpci_unmask_irq;
ftvpci_mask_irq(i);
} else {
irq_desc[i].valid = 0;
irq_desc[i].probe_ok = 0;
}
}
}
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