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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;

                }

        }

}