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/*

 * include/asm-arm/arch-l7200/irq.h

 *

 * Copyright (C) 2000 Rob Scott (rscott@mtrob.fdns.ne

 *                    Steve Hill (sjhill@cotw.com)

 *

 * Changelog:

 *   01-02-2000 RS      Created l7200 version, derived from ebsa110 code

 *   04-15-2000 RS      Made dependent on hardware.h

 *   05-05-2000 SJH     Complete rewrite

 */

#include <asm/arch/hardware.h>

/*

 * IRQ base register

 */

#define IRQ_BASE        (IO_BASE_2 + 0x1000)

/*

 * Normal IRQ registers

 */

#define IRQ_STATUS      (*(volatile unsigned long *) (IRQ_BASE + 0x000))

#define IRQ_RAWSTATUS   (*(volatile unsigned long *) (IRQ_BASE + 0x004))

#define IRQ_ENABLE      (*(volatile unsigned long *) (IRQ_BASE + 0x008))

#define IRQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x00c))

#define IRQ_SOFT        (*(volatile unsigned long *) (IRQ_BASE + 0x010))

#define IRQ_SOURCESEL   (*(volatile unsigned long *) (IRQ_BASE + 0x018))

/*

 * Fast IRQ registers

 */

#define FIQ_STATUS      (*(volatile unsigned long *) (IRQ_BASE + 0x100))

#define FIQ_RAWSTATUS   (*(volatile unsigned long *) (IRQ_BASE + 0x104))

#define FIQ_ENABLE      (*(volatile unsigned long *) (IRQ_BASE + 0x108))

#define FIQ_ENABLECLEAR (*(volatile unsigned long *) (IRQ_BASE + 0x10c))

#define FIQ_SOFT        (*(volatile unsigned long *) (IRQ_BASE + 0x110))

#define FIQ_SOURCESEL   (*(volatile unsigned long *) (IRQ_BASE + 0x118))

#define fixup_irq(x) (x)

static void l7200_mask_irq(unsigned int irq)

{

        IRQ_ENABLECLEAR = 1 << irq;

}

static void l7200_unmask_irq(unsigned int irq)

{

        IRQ_ENABLE = 1 << irq;

}

static __inline__ void irq_init_irq(void)

{

        int irq;

        IRQ_ENABLECLEAR = 0xffffffff;   /* clear all interrupt enables */

        FIQ_ENABLECLEAR = 0xffffffff;   /* clear all fast interrupt enables */

        for (irq = 0; irq < NR_IRQS; irq++) {

                irq_desc[irq].valid     = 1;

                irq_desc[irq].probe_ok  = 1;

                irq_desc[irq].mask_ack  = l7200_mask_irq;

                irq_desc[irq].mask      = l7200_mask_irq;

                irq_desc[irq].unmask    = l7200_unmask_irq;

        }

        init_FIQ();

}