diff options
Diffstat (limited to 'include/asm-arm/arch-cl7500/irq.h')
| -rw-r--r-- | include/asm-arm/arch-cl7500/irq.h | 32 |
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 new file mode 100644 index 000000000000..4b286331f3f8 --- /dev/null +++ b/include/asm-arm/arch-cl7500/irq.h @@ -0,0 +1,32 @@ +/* + * 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; +} |