df9ee29270
Fix the IRQ flag handling naming. In linux/irqflags.h under one configuration, it maps: local_irq_enable() -> raw_local_irq_enable() local_irq_disable() -> raw_local_irq_disable() local_irq_save() -> raw_local_irq_save() ... and under the other configuration, it maps: raw_local_irq_enable() -> local_irq_enable() raw_local_irq_disable() -> local_irq_disable() raw_local_irq_save() -> local_irq_save() ... This is quite confusing. There should be one set of names expected of the arch, and this should be wrapped to give another set of names that are expected by users of this facility. Change this to have the arch provide: flags = arch_local_save_flags() flags = arch_local_irq_save() arch_local_irq_restore(flags) arch_local_irq_disable() arch_local_irq_enable() arch_irqs_disabled_flags(flags) arch_irqs_disabled() arch_safe_halt() Then linux/irqflags.h wraps these to provide: raw_local_save_flags(flags) raw_local_irq_save(flags) raw_local_irq_restore(flags) raw_local_irq_disable() raw_local_irq_enable() raw_irqs_disabled_flags(flags) raw_irqs_disabled() raw_safe_halt() with type checking on the flags 'arguments', and then wraps those to provide: local_save_flags(flags) local_irq_save(flags) local_irq_restore(flags) local_irq_disable() local_irq_enable() irqs_disabled_flags(flags) irqs_disabled() safe_halt() with tracing included if enabled. The arch functions can now all be inline functions rather than some of them having to be macros. Signed-off-by: David Howells <dhowells@redhat.com> [X86, FRV, MN10300] Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> [Tile] Signed-off-by: Michal Simek <monstr@monstr.eu> [Microblaze] Tested-by: Catalin Marinas <catalin.marinas@arm.com> [ARM] Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> [AVR] Acked-by: Tony Luck <tony.luck@intel.com> [IA-64] Acked-by: Hirokazu Takata <takata@linux-m32r.org> [M32R] Acked-by: Greg Ungerer <gerg@uclinux.org> [M68K/M68KNOMMU] Acked-by: Ralf Baechle <ralf@linux-mips.org> [MIPS] Acked-by: Kyle McMartin <kyle@mcmartin.ca> [PA-RISC] Acked-by: Paul Mackerras <paulus@samba.org> [PowerPC] Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [S390] Acked-by: Chen Liqin <liqin.chen@sunplusct.com> [Score] Acked-by: Matt Fleming <matt@console-pimps.org> [SH] Acked-by: David S. Miller <davem@davemloft.net> [Sparc] Acked-by: Chris Zankel <chris@zankel.net> [Xtensa] Reviewed-by: Richard Henderson <rth@twiddle.net> [Alpha] Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp> [H8300] Cc: starvik@axis.com [CRIS] Cc: jesper.nilsson@axis.com [CRIS] Cc: linux-cris-kernel@axis.com
121 lines
1.9 KiB
C
121 lines
1.9 KiB
C
#ifndef _ASM_SCORE_IRQFLAGS_H
|
|
#define _ASM_SCORE_IRQFLAGS_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <linux/types.h>
|
|
|
|
static inline unsigned long arch_local_save_flags(void)
|
|
{
|
|
unsigned long flags;
|
|
|
|
asm volatile(
|
|
" mfcr r8, cr0 \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" mv %0, r8 \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" ldi r9, 0x1 \n"
|
|
" and %0, %0, r9 \n"
|
|
: "=r" (flags)
|
|
:
|
|
: "r8", "r9");
|
|
return flags;
|
|
}
|
|
|
|
static inline unsigned long arch_local_irq_save(void)
|
|
{
|
|
unsigned long flags
|
|
|
|
asm volatile(
|
|
" mfcr r8, cr0 \n"
|
|
" li r9, 0xfffffffe \n"
|
|
" nop \n"
|
|
" mv %0, r8 \n"
|
|
" and r8, r8, r9 \n"
|
|
" mtcr r8, cr0 \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
: "=r" (flags)
|
|
:
|
|
: "r8", "r9", "memory");
|
|
|
|
return flags;
|
|
}
|
|
|
|
static inline void arch_local_irq_restore(unsigned long flags)
|
|
{
|
|
asm volatile(
|
|
" mfcr r8, cr0 \n"
|
|
" ldi r9, 0x1 \n"
|
|
" and %0, %0, r9 \n"
|
|
" or r8, r8, %0 \n"
|
|
" mtcr r8, cr0 \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
:
|
|
: "r"(flags)
|
|
: "r8", "r9", "memory");
|
|
}
|
|
|
|
static inline void arch_local_irq_enable(void)
|
|
{
|
|
asm volatile(
|
|
" mfcr r8,cr0 \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" ori r8,0x1 \n"
|
|
" mtcr r8,cr0 \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
:
|
|
:
|
|
: "r8", "memory");
|
|
}
|
|
|
|
static inline void arch_local_irq_disable(void)
|
|
{
|
|
asm volatile(
|
|
" mfcr r8,cr0 \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" srli r8,r8,1 \n"
|
|
" slli r8,r8,1 \n"
|
|
" mtcr r8,cr0 \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
" nop \n"
|
|
:
|
|
:
|
|
: "r8", "memory");
|
|
}
|
|
|
|
static inline bool arch_irqs_disabled_flags(unsigned long flags)
|
|
{
|
|
return !(flags & 1);
|
|
}
|
|
|
|
static inline bool arch_irqs_disabled(void)
|
|
{
|
|
return arch_irqs_disabled_flags(arch_local_save_flags());
|
|
}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_SCORE_IRQFLAGS_H */
|