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-rw-r--r--include/asm-arm/arch-cl7500/irq.h32
1 files changed, 32 insertions, 0 deletions
diff --git a/include/asm-arm/arch-cl7500/irq.h b/include/asm-arm/arch-cl7500/irq.h
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index 000000000000..4b286331f3f8
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+++ b/include/asm-arm/arch-cl7500/irq.h
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1/*
2 * include/asm-arm/arch-cl7500/irq.h
3 *
4 * Copyright (C) 1996 Russell King
5 * Copyright (C) 1999, 2001 Nexus Electronics Ltd.
6 *
7 * Changelog:
8 * 10-10-1996 RMK Brought up to date with arch-sa110eval
9 * 22-08-1998 RMK Restructured IRQ routines
10 * 11-08-1999 PJB Created ARM7500 version, derived from RiscPC code
11 */
12
13#include <asm/hardware/iomd.h>
14#include <asm/io.h>
15
16static inline int fixup_irq(unsigned int irq)
17{
18 if (irq == IRQ_ISA) {
19 int isabits = *((volatile unsigned int *)0xe002b700);
20 if (isabits == 0) {
21 printk("Spurious ISA IRQ!\n");
22 return irq;
23 }
24 irq = IRQ_ISA_BASE;
25 while (!(isabits & 1)) {
26 irq++;
27 isabits >>= 1;
28 }
29 }
30
31 return irq;
32}