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/*

/*

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

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

 *

 *

 * Copyright (C) 1996 Russell King

 * Copyright (C) 1996 Russell King

 *

 *

 * Changelog:

 * Changelog:

 *   10-10-1996 RMK     Brought up to date with arch-sa110eval

 *   10-10-1996 RMK     Brought up to date with arch-sa110eval

 */

 */

#define BUILD_IRQ(s,n,m) \

#define BUILD_IRQ(s,n,m) \

        void IRQ##n##_interrupt(void); \

        void IRQ##n##_interrupt(void); \

        void fast_IRQ##n##_interrupt(void); \

        void fast_IRQ##n##_interrupt(void); \

        void bad_IRQ##n##_interrupt(void); \

        void bad_IRQ##n##_interrupt(void); \

        void probe_IRQ##n##_interrupt(void);

        void probe_IRQ##n##_interrupt(void);

/*

/*

 * The timer is a special interrupt

 * The timer is a special interrupt

 */

 */

#define IRQ5_interrupt          timer_IRQ_interrupt

#define IRQ5_interrupt          timer_IRQ_interrupt

#define IRQ_INTERRUPT(n)        IRQ##n##_interrupt

#define IRQ_INTERRUPT(n)        IRQ##n##_interrupt

#define FAST_INTERRUPT(n)       fast_IRQ##n##_interrupt

#define FAST_INTERRUPT(n)       fast_IRQ##n##_interrupt

#define BAD_INTERRUPT(n)        bad_IRQ##n##_interrupt

#define BAD_INTERRUPT(n)        bad_IRQ##n##_interrupt

#define PROBE_INTERRUPT(n)      probe_IRQ##n##_interrupt

#define PROBE_INTERRUPT(n)      probe_IRQ##n##_interrupt

static __inline__ void mask_irq(unsigned int irq)

static __inline__ void mask_irq(unsigned int irq)

{

{

        extern void ecard_disableirq (unsigned int);

        extern void ecard_disableirq (unsigned int);

        extern void ecard_disablefiq (unsigned int);

        extern void ecard_disablefiq (unsigned int);

        unsigned char mask = 1 << (irq & 7);

        unsigned char mask = 1 << (irq & 7);

        switch (irq >> 3) {

        switch (irq >> 3) {

        case 0:

        case 0:

                outb(inb(IOMD_IRQMASKA) & ~mask, IOMD_IRQMASKA);

                outb(inb(IOMD_IRQMASKA) & ~mask, IOMD_IRQMASKA);

                break;

                break;

        case 1:

        case 1:

                outb(inb(IOMD_IRQMASKB) & ~mask, IOMD_IRQMASKB);

                outb(inb(IOMD_IRQMASKB) & ~mask, IOMD_IRQMASKB);

                break;

                break;

        case 2:

        case 2:

                outb(inb(IOMD_DMAMASK) & ~mask, IOMD_DMAMASK);

                outb(inb(IOMD_DMAMASK) & ~mask, IOMD_DMAMASK);

                break;

                break;

        case 4:

        case 4:

                ecard_disableirq (irq & 7);

                ecard_disableirq (irq & 7);

                break;

                break;

        case 8:

        case 8:

                outb(inb(IOMD_FIQMASK) & ~mask, IOMD_FIQMASK);

                outb(inb(IOMD_FIQMASK) & ~mask, IOMD_FIQMASK);

                break;

                break;

        case 12:

        case 12:

                ecard_disablefiq (irq & 7);

                ecard_disablefiq (irq & 7);

        }

        }

}

}

static __inline__ void unmask_irq(unsigned int irq)

static __inline__ void unmask_irq(unsigned int irq)

{

{

        extern void ecard_enableirq (unsigned int);

        extern void ecard_enableirq (unsigned int);

        extern void ecard_enablefiq (unsigned int);

        extern void ecard_enablefiq (unsigned int);

        unsigned char mask = 1 << (irq & 7);

        unsigned char mask = 1 << (irq & 7);

        switch (irq >> 3) {

        switch (irq >> 3) {

        case 0:

        case 0:

                outb(inb(IOMD_IRQMASKA) | mask, IOMD_IRQMASKA);

                outb(inb(IOMD_IRQMASKA) | mask, IOMD_IRQMASKA);

                break;

                break;

        case 1:

        case 1:

                outb(inb(IOMD_IRQMASKB) | mask, IOMD_IRQMASKB);

                outb(inb(IOMD_IRQMASKB) | mask, IOMD_IRQMASKB);

                break;

                break;

        case 2:

        case 2:

                outb(inb(IOMD_DMAMASK) | mask, IOMD_DMAMASK);

                outb(inb(IOMD_DMAMASK) | mask, IOMD_DMAMASK);

                break;

                break;

        case 4:

        case 4:

                ecard_enableirq (irq & 7);

                ecard_enableirq (irq & 7);

                break;

                break;

        case 8:

        case 8:

                outb(inb(IOMD_FIQMASK) | mask, IOMD_FIQMASK);

                outb(inb(IOMD_FIQMASK) | mask, IOMD_FIQMASK);

                break;

                break;

        case 12:

        case 12:

                ecard_enablefiq (irq & 7);

                ecard_enablefiq (irq & 7);

        }

        }

}

}

static __inline__ unsigned long get_enabled_irqs(void)

static __inline__ unsigned long get_enabled_irqs(void)

{

{

        return inb(IOMD_IRQMASKA) | inb(IOMD_IRQMASKB) << 8 | inb(IOMD_DMAMASK) << 16;

        return inb(IOMD_IRQMASKA) | inb(IOMD_IRQMASKB) << 8 | inb(IOMD_DMAMASK) << 16;

}

}

static __inline__ void irq_init_irq(void)

static __inline__ void irq_init_irq(void)

{

{

        outb(0, IOMD_IRQMASKA);

        outb(0, IOMD_IRQMASKA);

        outb(0, IOMD_IRQMASKB);

        outb(0, IOMD_IRQMASKB);

        outb(0, IOMD_FIQMASK);

        outb(0, IOMD_FIQMASK);

        outb(0, IOMD_DMAMASK);

        outb(0, IOMD_DMAMASK);

        outb(0, IOMD_IO0CR);

        outb(0, IOMD_IO0CR);

        outb(0, IOMD_IO1CR);

        outb(0, IOMD_IO1CR);

        outb(0, IOMD_IO2CR);

        outb(0, IOMD_IO2CR);

        outb(0, IOMD_IO3CR);

        outb(0, IOMD_IO3CR);

}

}