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irq.h

/*
 * arch/arm/mach-clps7500/include/mach/irq.h
 *
 * Copyright (C) 1996 Russell King
 * Copyright (C) 1999, 2001 Nexus Electronics Ltd.
 *
 * Changelog:
 *   10-10-1996   RMK   Brought up to date with arch-sa110eval
 *   22-08-1998   RMK   Restructured IRQ routines
 *   11-08-1999   PJB   Created ARM7500 version, derived from RiscPC code
 */

#include <asm/hardware/iomd.h>
#include <asm/io.h>

static inline int fixup_irq(unsigned int irq)
{
      if (irq == IRQ_ISA) {
            int isabits = *((volatile unsigned int *)0xe002b700);
            if (isabits == 0) {
                  printk("Spurious ISA IRQ!\n");
                  return irq;
            }
            irq = IRQ_ISA_BASE;
            while (!(isabits & 1)) {
                  irq++;
                  isabits >>= 1;
            }
      }

      return irq;
}

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