Contributors: 6
Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
David Howells |
113 |
54.85% |
2 |
20.00% |
Michal Simek |
71 |
34.47% |
4 |
40.00% |
Steven Rostedt |
10 |
4.85% |
1 |
10.00% |
Sam Ravnborg |
5 |
2.43% |
1 |
10.00% |
Arnd Bergmann |
5 |
2.43% |
1 |
10.00% |
David S. Miller |
2 |
0.97% |
1 |
10.00% |
Total |
206 |
|
10 |
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2006 Atmark Techno, Inc.
*/
#ifndef _ASM_MICROBLAZE_IRQFLAGS_H
#define _ASM_MICROBLAZE_IRQFLAGS_H
#include <linux/types.h>
#include <asm/registers.h>
#if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
static inline notrace unsigned long arch_local_irq_save(void)
{
unsigned long flags;
asm volatile(" msrclr %0, %1 \n"
" nop \n"
: "=r"(flags)
: "i"(MSR_IE)
: "memory");
return flags;
}
static inline notrace void arch_local_irq_disable(void)
{
/* this uses r0 without declaring it - is that correct? */
asm volatile(" msrclr r0, %0 \n"
" nop \n"
:
: "i"(MSR_IE)
: "memory");
}
static inline notrace void arch_local_irq_enable(void)
{
/* this uses r0 without declaring it - is that correct? */
asm volatile(" msrset r0, %0 \n"
" nop \n"
:
: "i"(MSR_IE)
: "memory");
}
#else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
static inline notrace unsigned long arch_local_irq_save(void)
{
unsigned long flags, tmp;
asm volatile (" mfs %0, rmsr \n"
" nop \n"
" andi %1, %0, %2 \n"
" mts rmsr, %1 \n"
" nop \n"
: "=r"(flags), "=r"(tmp)
: "i"(~MSR_IE)
: "memory");
return flags;
}
static inline notrace void arch_local_irq_disable(void)
{
unsigned long tmp;
asm volatile(" mfs %0, rmsr \n"
" nop \n"
" andi %0, %0, %1 \n"
" mts rmsr, %0 \n"
" nop \n"
: "=r"(tmp)
: "i"(~MSR_IE)
: "memory");
}
static inline notrace void arch_local_irq_enable(void)
{
unsigned long tmp;
asm volatile(" mfs %0, rmsr \n"
" nop \n"
" ori %0, %0, %1 \n"
" mts rmsr, %0 \n"
" nop \n"
: "=r"(tmp)
: "i"(MSR_IE)
: "memory");
}
#endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
static inline notrace unsigned long arch_local_save_flags(void)
{
unsigned long flags;
asm volatile(" mfs %0, rmsr \n"
" nop \n"
: "=r"(flags)
:
: "memory");
return flags;
}
static inline notrace void arch_local_irq_restore(unsigned long flags)
{
asm volatile(" mts rmsr, %0 \n"
" nop \n"
:
: "r"(flags)
: "memory");
}
static inline notrace bool arch_irqs_disabled_flags(unsigned long flags)
{
return (flags & MSR_IE) == 0;
}
static inline notrace bool arch_irqs_disabled(void)
{
return arch_irqs_disabled_flags(arch_local_save_flags());
}
#endif /* _ASM_MICROBLAZE_IRQFLAGS_H */