/* | |
* include/asm-arm/arch-cl7500/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; | |
} |