linux/include/asm-arm/arch-cl7500/irq.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

32 lines
680 B
C

/*
* 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;
}