c0ad90a32f
Add ->retrigger() irq op to consolidate hw_irq_resend() implementations. (Most architectures had it defined to NOP anyway.) NOTE: ia64 needs testing. i386 and x86_64 tested. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
113 lines
2.6 KiB
C
113 lines
2.6 KiB
C
/*
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* Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
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*/
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#ifndef _ASM_POWERPC_HW_IRQ_H
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#define _ASM_POWERPC_HW_IRQ_H
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#ifdef __KERNEL__
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#include <linux/errno.h>
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#include <asm/ptrace.h>
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#include <asm/processor.h>
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extern void timer_interrupt(struct pt_regs *);
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#ifdef CONFIG_PPC_ISERIES
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extern unsigned long local_get_flags(void);
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extern unsigned long local_irq_disable(void);
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extern void local_irq_restore(unsigned long);
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#define local_irq_enable() local_irq_restore(1)
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#define local_save_flags(flags) ((flags) = local_get_flags())
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#define local_irq_save(flags) ((flags) = local_irq_disable())
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#define irqs_disabled() (local_get_flags() == 0)
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#else
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#if defined(CONFIG_BOOKE)
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#define SET_MSR_EE(x) mtmsr(x)
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#define local_irq_restore(flags) __asm__ __volatile__("wrtee %0" : : "r" (flags) : "memory")
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#elif defined(__powerpc64__)
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#define SET_MSR_EE(x) __mtmsrd(x, 1)
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#define local_irq_restore(flags) do { \
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__asm__ __volatile__("": : :"memory"); \
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__mtmsrd((flags), 1); \
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} while(0)
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#else
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#define SET_MSR_EE(x) mtmsr(x)
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#define local_irq_restore(flags) mtmsr(flags)
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#endif
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static inline void local_irq_disable(void)
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{
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#ifdef CONFIG_BOOKE
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__asm__ __volatile__("wrteei 0": : :"memory");
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#else
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unsigned long msr;
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__asm__ __volatile__("": : :"memory");
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msr = mfmsr();
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SET_MSR_EE(msr & ~MSR_EE);
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#endif
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}
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static inline void local_irq_enable(void)
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{
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#ifdef CONFIG_BOOKE
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__asm__ __volatile__("wrteei 1": : :"memory");
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#else
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unsigned long msr;
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__asm__ __volatile__("": : :"memory");
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msr = mfmsr();
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SET_MSR_EE(msr | MSR_EE);
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#endif
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}
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static inline void local_irq_save_ptr(unsigned long *flags)
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{
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unsigned long msr;
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msr = mfmsr();
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*flags = msr;
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#ifdef CONFIG_BOOKE
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__asm__ __volatile__("wrteei 0": : :"memory");
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#else
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SET_MSR_EE(msr & ~MSR_EE);
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#endif
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__asm__ __volatile__("": : :"memory");
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}
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#define local_save_flags(flags) ((flags) = mfmsr())
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#define local_irq_save(flags) local_irq_save_ptr(&flags)
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#define irqs_disabled() ((mfmsr() & MSR_EE) == 0)
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#endif /* CONFIG_PPC_ISERIES */
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#define mask_irq(irq) \
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({ \
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irq_desc_t *desc = get_irq_desc(irq); \
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if (desc->chip && desc->chip->disable) \
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desc->chip->disable(irq); \
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})
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#define unmask_irq(irq) \
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({ \
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irq_desc_t *desc = get_irq_desc(irq); \
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if (desc->chip && desc->chip->enable) \
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desc->chip->enable(irq); \
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})
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#define ack_irq(irq) \
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({ \
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irq_desc_t *desc = get_irq_desc(irq); \
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if (desc->chip && desc->chip->ack) \
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desc->chip->ack(irq); \
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})
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/*
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* interrupt-retrigger: should we handle this via lost interrupts and IPIs
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* or should we not care like we do now ? --BenH.
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*/
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struct hw_interrupt_type;
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_HW_IRQ_H */
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