linux/arch/arm/include/asm/hardirq.h
Magnus Damm 27ada410c7 ARM: 6138/1: Add support for 10 hardirq bits
This patch adds support for 10 hardirq bits to
the ARM architecture. Needed by the SH-Mobile
ARM processor sh7372 that has more than 512 IRQs.

Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-05-20 23:51:07 +01:00

35 lines
733 B
C

#ifndef __ASM_HARDIRQ_H
#define __ASM_HARDIRQ_H
#include <linux/cache.h>
#include <linux/threads.h>
#include <asm/irq.h>
typedef struct {
unsigned int __softirq_pending;
unsigned int local_timer_irqs;
} ____cacheline_aligned irq_cpustat_t;
#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
#if NR_IRQS > 512
#define HARDIRQ_BITS 10
#elif NR_IRQS > 256
#define HARDIRQ_BITS 9
#else
#define HARDIRQ_BITS 8
#endif
/*
* The hardirq mask has to be large enough to have space
* for potentially all IRQ sources in the system nesting
* on a single CPU:
*/
#if (1 << HARDIRQ_BITS) < NR_IRQS
# error HARDIRQ_BITS is too low!
#endif
#define __ARCH_IRQ_EXIT_IRQS_DISABLED 1
#endif /* __ASM_HARDIRQ_H */