| 1 |
1275 |
phoenix |
/*
|
| 2 |
|
|
* Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
|
| 3 |
|
|
*
|
| 4 |
|
|
* Use inline IRQs where possible - Anton Blanchard <anton@au.ibm.com>
|
| 5 |
|
|
*
|
| 6 |
|
|
* This program is free software; you can redistribute it and/or
|
| 7 |
|
|
* modify it under the terms of the GNU General Public License
|
| 8 |
|
|
* as published by the Free Software Foundation; either version
|
| 9 |
|
|
* 2 of the License, or (at your option) any later version.
|
| 10 |
|
|
*/
|
| 11 |
|
|
#ifdef __KERNEL__
|
| 12 |
|
|
#ifndef _PPC64_HW_IRQ_H
|
| 13 |
|
|
#define _PPC64_HW_IRQ_H
|
| 14 |
|
|
|
| 15 |
|
|
#include <linux/config.h>
|
| 16 |
|
|
#include <asm/irq.h>
|
| 17 |
|
|
|
| 18 |
|
|
int timer_interrupt(struct pt_regs *);
|
| 19 |
|
|
|
| 20 |
|
|
#ifdef CONFIG_PPC_ISERIES
|
| 21 |
|
|
|
| 22 |
|
|
extern void __no_use_sti(void);
|
| 23 |
|
|
extern void __no_use_cli(void);
|
| 24 |
|
|
extern void __no_use_restore_flags(unsigned long);
|
| 25 |
|
|
extern unsigned long __no_use_save_flags(void);
|
| 26 |
|
|
extern void __no_use_set_lost(unsigned long);
|
| 27 |
|
|
extern void __no_lpq_restore_flags(unsigned long);
|
| 28 |
|
|
|
| 29 |
|
|
#define __cli() __no_use_cli()
|
| 30 |
|
|
#define __sti() __no_use_sti()
|
| 31 |
|
|
#define __save_flags(flags) ((flags) = __no_use_save_flags())
|
| 32 |
|
|
#define __restore_flags(flags) __no_use_restore_flags((unsigned long)flags)
|
| 33 |
|
|
#define __save_and_cli(flags) ({__save_flags(flags);__cli();})
|
| 34 |
|
|
#define __save_and_sti(flags) ({__save_flags(flags);__sti();})
|
| 35 |
|
|
|
| 36 |
|
|
#else
|
| 37 |
|
|
|
| 38 |
|
|
#define __save_flags(flags) ((flags) = mfmsr())
|
| 39 |
|
|
#define __restore_flags(flags) do { \
|
| 40 |
|
|
__asm__ __volatile__("": : :"memory"); \
|
| 41 |
|
|
mtmsrd(flags); \
|
| 42 |
|
|
} while(0)
|
| 43 |
|
|
|
| 44 |
|
|
static inline void __cli(void)
|
| 45 |
|
|
{
|
| 46 |
|
|
unsigned long msr;
|
| 47 |
|
|
msr = mfmsr();
|
| 48 |
|
|
mtmsrd(msr & ~MSR_EE);
|
| 49 |
|
|
__asm__ __volatile__("": : :"memory");
|
| 50 |
|
|
}
|
| 51 |
|
|
|
| 52 |
|
|
static inline void __sti(void)
|
| 53 |
|
|
{
|
| 54 |
|
|
unsigned long msr;
|
| 55 |
|
|
__asm__ __volatile__("": : :"memory");
|
| 56 |
|
|
msr = mfmsr();
|
| 57 |
|
|
mtmsrd(msr | MSR_EE);
|
| 58 |
|
|
}
|
| 59 |
|
|
|
| 60 |
|
|
static inline void __do_save_and_cli(unsigned long *flags)
|
| 61 |
|
|
{
|
| 62 |
|
|
unsigned long msr;
|
| 63 |
|
|
msr = mfmsr();
|
| 64 |
|
|
*flags = msr;
|
| 65 |
|
|
mtmsrd(msr & ~MSR_EE);
|
| 66 |
|
|
__asm__ __volatile__("": : :"memory");
|
| 67 |
|
|
}
|
| 68 |
|
|
|
| 69 |
|
|
#define __save_and_cli(flags) __do_save_and_cli(&flags)
|
| 70 |
|
|
#define __save_and_sti(flags) ({__save_flags(flags);__sti();})
|
| 71 |
|
|
|
| 72 |
|
|
#endif /* CONFIG_PPC_ISERIES */
|
| 73 |
|
|
|
| 74 |
|
|
#define mask_irq(irq) ({ \
|
| 75 |
|
|
irq_desc_t *desc = irqdesc(irq); \
|
| 76 |
|
|
if (desc->handler && desc->handler->disable) \
|
| 77 |
|
|
desc->handler->disable(irq); \
|
| 78 |
|
|
})
|
| 79 |
|
|
#define unmask_irq(irq) ({ \
|
| 80 |
|
|
irq_desc_t *desc = irqdesc(irq); \
|
| 81 |
|
|
if (desc->handler && desc->handler->enable) \
|
| 82 |
|
|
desc->handler->enable(irq); \
|
| 83 |
|
|
})
|
| 84 |
|
|
#define ack_irq(irq) ({ \
|
| 85 |
|
|
irq_desc_t *desc = irqdesc(irq); \
|
| 86 |
|
|
if (desc->handler && desc->handler->ack) \
|
| 87 |
|
|
desc->handler->ack(irq); \
|
| 88 |
|
|
})
|
| 89 |
|
|
|
| 90 |
|
|
/* Should we handle this via lost interrupts and IPIs or should we don't care like
|
| 91 |
|
|
* we do now ? --BenH.
|
| 92 |
|
|
*/
|
| 93 |
|
|
struct hw_interrupt_type;
|
| 94 |
|
|
static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
|
| 95 |
|
|
|
| 96 |
|
|
#endif /* _PPC64_HW_IRQ_H */
|
| 97 |
|
|
#endif /* __KERNEL__ */
|
