forked from luck/tmp_suning_uos_patched
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!
135 lines
2.8 KiB
C
135 lines
2.8 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 1994, 95, 96, 97, 98, 99, 2003 by Ralf Baechle
|
|
* Copyright (C) 1996 by Paul M. Antoine
|
|
* Copyright (C) 1999 Silicon Graphics
|
|
* Copyright (C) 2000 MIPS Technologies, Inc.
|
|
*/
|
|
#ifndef _ASM_INTERRUPT_H
|
|
#define _ASM_INTERRUPT_H
|
|
|
|
#include <asm/hazards.h>
|
|
|
|
__asm__ (
|
|
".macro\tlocal_irq_enable\n\t"
|
|
".set\tpush\n\t"
|
|
".set\treorder\n\t"
|
|
".set\tnoat\n\t"
|
|
"mfc0\t$1,$12\n\t"
|
|
"ori\t$1,0x1f\n\t"
|
|
"xori\t$1,0x1e\n\t"
|
|
"mtc0\t$1,$12\n\t"
|
|
"irq_enable_hazard\n\t"
|
|
".set\tpop\n\t"
|
|
".endm");
|
|
|
|
static inline void local_irq_enable(void)
|
|
{
|
|
__asm__ __volatile__(
|
|
"local_irq_enable"
|
|
: /* no outputs */
|
|
: /* no inputs */
|
|
: "memory");
|
|
}
|
|
|
|
/*
|
|
* For cli() we have to insert nops to make sure that the new value
|
|
* has actually arrived in the status register before the end of this
|
|
* macro.
|
|
* R4000/R4400 need three nops, the R4600 two nops and the R10000 needs
|
|
* no nops at all.
|
|
*/
|
|
__asm__ (
|
|
".macro\tlocal_irq_disable\n\t"
|
|
".set\tpush\n\t"
|
|
".set\tnoat\n\t"
|
|
"mfc0\t$1,$12\n\t"
|
|
"ori\t$1,1\n\t"
|
|
"xori\t$1,1\n\t"
|
|
".set\tnoreorder\n\t"
|
|
"mtc0\t$1,$12\n\t"
|
|
"irq_disable_hazard\n\t"
|
|
".set\tpop\n\t"
|
|
".endm");
|
|
|
|
static inline void local_irq_disable(void)
|
|
{
|
|
__asm__ __volatile__(
|
|
"local_irq_disable"
|
|
: /* no outputs */
|
|
: /* no inputs */
|
|
: "memory");
|
|
}
|
|
|
|
__asm__ (
|
|
".macro\tlocal_save_flags flags\n\t"
|
|
".set\tpush\n\t"
|
|
".set\treorder\n\t"
|
|
"mfc0\t\\flags, $12\n\t"
|
|
".set\tpop\n\t"
|
|
".endm");
|
|
|
|
#define local_save_flags(x) \
|
|
__asm__ __volatile__( \
|
|
"local_save_flags %0" \
|
|
: "=r" (x))
|
|
|
|
__asm__ (
|
|
".macro\tlocal_irq_save result\n\t"
|
|
".set\tpush\n\t"
|
|
".set\treorder\n\t"
|
|
".set\tnoat\n\t"
|
|
"mfc0\t\\result, $12\n\t"
|
|
"ori\t$1, \\result, 1\n\t"
|
|
"xori\t$1, 1\n\t"
|
|
".set\tnoreorder\n\t"
|
|
"mtc0\t$1, $12\n\t"
|
|
"irq_disable_hazard\n\t"
|
|
".set\tpop\n\t"
|
|
".endm");
|
|
|
|
#define local_irq_save(x) \
|
|
__asm__ __volatile__( \
|
|
"local_irq_save\t%0" \
|
|
: "=r" (x) \
|
|
: /* no inputs */ \
|
|
: "memory")
|
|
|
|
__asm__ (
|
|
".macro\tlocal_irq_restore flags\n\t"
|
|
".set\tnoreorder\n\t"
|
|
".set\tnoat\n\t"
|
|
"mfc0\t$1, $12\n\t"
|
|
"andi\t\\flags, 1\n\t"
|
|
"ori\t$1, 1\n\t"
|
|
"xori\t$1, 1\n\t"
|
|
"or\t\\flags, $1\n\t"
|
|
"mtc0\t\\flags, $12\n\t"
|
|
"irq_disable_hazard\n\t"
|
|
".set\tat\n\t"
|
|
".set\treorder\n\t"
|
|
".endm");
|
|
|
|
#define local_irq_restore(flags) \
|
|
do { \
|
|
unsigned long __tmp1; \
|
|
\
|
|
__asm__ __volatile__( \
|
|
"local_irq_restore\t%0" \
|
|
: "=r" (__tmp1) \
|
|
: "0" (flags) \
|
|
: "memory"); \
|
|
} while(0)
|
|
|
|
#define irqs_disabled() \
|
|
({ \
|
|
unsigned long flags; \
|
|
local_save_flags(flags); \
|
|
!(flags & 1); \
|
|
})
|
|
|
|
#endif /* _ASM_INTERRUPT_H */
|