mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
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!
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/*
|
|
* Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
|
|
*
|
|
* Use inline IRQs where possible - Anton Blanchard <anton@au.ibm.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#ifdef __KERNEL__
|
|
#ifndef _PPC64_HW_IRQ_H
|
|
#define _PPC64_HW_IRQ_H
|
|
|
|
#include <linux/config.h>
|
|
#include <linux/errno.h>
|
|
#include <asm/irq.h>
|
|
|
|
int timer_interrupt(struct pt_regs *);
|
|
extern void ppc_irq_dispatch_handler(struct pt_regs *regs, int irq);
|
|
|
|
#ifdef CONFIG_PPC_ISERIES
|
|
|
|
extern unsigned long local_get_flags(void);
|
|
extern unsigned long local_irq_disable(void);
|
|
extern void local_irq_restore(unsigned long);
|
|
|
|
#define local_irq_enable() local_irq_restore(1)
|
|
#define local_save_flags(flags) ((flags) = local_get_flags())
|
|
#define local_irq_save(flags) ((flags) = local_irq_disable())
|
|
|
|
#define irqs_disabled() (local_get_flags() == 0)
|
|
|
|
#else
|
|
|
|
#define local_save_flags(flags) ((flags) = mfmsr())
|
|
#define local_irq_restore(flags) do { \
|
|
__asm__ __volatile__("": : :"memory"); \
|
|
__mtmsrd((flags), 1); \
|
|
} while(0)
|
|
|
|
static inline void local_irq_disable(void)
|
|
{
|
|
unsigned long msr;
|
|
msr = mfmsr();
|
|
__mtmsrd(msr & ~MSR_EE, 1);
|
|
__asm__ __volatile__("": : :"memory");
|
|
}
|
|
|
|
static inline void local_irq_enable(void)
|
|
{
|
|
unsigned long msr;
|
|
__asm__ __volatile__("": : :"memory");
|
|
msr = mfmsr();
|
|
__mtmsrd(msr | MSR_EE, 1);
|
|
}
|
|
|
|
static inline void __do_save_and_cli(unsigned long *flags)
|
|
{
|
|
unsigned long msr;
|
|
msr = mfmsr();
|
|
*flags = msr;
|
|
__mtmsrd(msr & ~MSR_EE, 1);
|
|
__asm__ __volatile__("": : :"memory");
|
|
}
|
|
|
|
#define local_irq_save(flags) __do_save_and_cli(&flags)
|
|
|
|
#define irqs_disabled() \
|
|
({ \
|
|
unsigned long flags; \
|
|
local_save_flags(flags); \
|
|
!(flags & MSR_EE); \
|
|
})
|
|
|
|
#endif /* CONFIG_PPC_ISERIES */
|
|
|
|
#define mask_irq(irq) \
|
|
({ \
|
|
irq_desc_t *desc = get_irq_desc(irq); \
|
|
if (desc->handler && desc->handler->disable) \
|
|
desc->handler->disable(irq); \
|
|
})
|
|
#define unmask_irq(irq) \
|
|
({ \
|
|
irq_desc_t *desc = get_irq_desc(irq); \
|
|
if (desc->handler && desc->handler->enable) \
|
|
desc->handler->enable(irq); \
|
|
})
|
|
#define ack_irq(irq) \
|
|
({ \
|
|
irq_desc_t *desc = get_irq_desc(irq); \
|
|
if (desc->handler && desc->handler->ack) \
|
|
desc->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 /* _PPC64_HW_IRQ_H */
|
|
#endif /* __KERNEL__ */
|