1da177e4c3
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!
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/*
|
|
* Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
|
|
*/
|
|
#ifdef __KERNEL__
|
|
#ifndef _PPC_HW_IRQ_H
|
|
#define _PPC_HW_IRQ_H
|
|
|
|
#include <asm/ptrace.h>
|
|
#include <asm/reg.h>
|
|
|
|
extern void timer_interrupt(struct pt_regs *);
|
|
|
|
#define INLINE_IRQS
|
|
|
|
#define irqs_disabled() ((mfmsr() & MSR_EE) == 0)
|
|
|
|
#ifdef INLINE_IRQS
|
|
|
|
static inline void local_irq_disable(void)
|
|
{
|
|
unsigned long msr;
|
|
msr = mfmsr();
|
|
mtmsr(msr & ~MSR_EE);
|
|
__asm__ __volatile__("": : :"memory");
|
|
}
|
|
|
|
static inline void local_irq_enable(void)
|
|
{
|
|
unsigned long msr;
|
|
__asm__ __volatile__("": : :"memory");
|
|
msr = mfmsr();
|
|
mtmsr(msr | MSR_EE);
|
|
}
|
|
|
|
static inline void local_irq_save_ptr(unsigned long *flags)
|
|
{
|
|
unsigned long msr;
|
|
msr = mfmsr();
|
|
*flags = msr;
|
|
mtmsr(msr & ~MSR_EE);
|
|
__asm__ __volatile__("": : :"memory");
|
|
}
|
|
|
|
#define local_save_flags(flags) ((flags) = mfmsr())
|
|
#define local_irq_save(flags) local_irq_save_ptr(&flags)
|
|
#define local_irq_restore(flags) mtmsr(flags)
|
|
|
|
#else
|
|
|
|
extern void local_irq_enable(void);
|
|
extern void local_irq_disable(void);
|
|
extern void local_irq_restore(unsigned long);
|
|
extern void local_save_flags_ptr(unsigned long *);
|
|
|
|
#define local_save_flags(flags) local_save_flags_ptr(&flags)
|
|
#define local_irq_save(flags) ({local_save_flags(flags);local_irq_disable();})
|
|
|
|
#endif
|
|
|
|
extern void do_lost_interrupts(unsigned long);
|
|
|
|
#define mask_irq(irq) ({if (irq_desc[irq].handler && irq_desc[irq].handler->disable) irq_desc[irq].handler->disable(irq);})
|
|
#define unmask_irq(irq) ({if (irq_desc[irq].handler && irq_desc[irq].handler->enable) irq_desc[irq].handler->enable(irq);})
|
|
#define ack_irq(irq) ({if (irq_desc[irq].handler && irq_desc[irq].handler->ack) irq_desc[irq].handler->ack(irq);})
|
|
|
|
/* Should we handle this via lost interrupts and IPIs or should we don't care like
|
|
* we do now ? --BenH.
|
|
*/
|
|
struct hw_interrupt_type;
|
|
static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
|
|
|
|
|
|
#endif /* _PPC_HW_IRQ_H */
|
|
#endif /* __KERNEL__ */
|