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arm64: gic-v3: Implement arch support for priority masking

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Implement architecture specific primitive allowing the GICv3 driver to
use priorities to mask interrupts.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Suggested-by: Daniel Thompson <daniel.thompson@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Julien Thierry 2019-01-31 14:58:56 +00:00 committed by Catalin Marinas
parent e793218838
commit b334481ab7
1 changed files with 4 additions and 4 deletions
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8
arch/arm64/include/asm/arch_gicv3.h
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@ -22,6 +22,7 @@
#ifndef __ASSEMBLY__
#include <linux/irqchip/arm-gic-common.h>
#include <linux/stringify.h>
#include <asm/barrier.h>
#include <asm/cacheflush.h>
@ -162,14 +163,13 @@ static inline bool gic_prio_masking_enabled(void)
static inline void gic_pmr_mask_irqs(void)
{
/* Should not get called yet. */
WARN_ON_ONCE(true);
BUILD_BUG_ON(GICD_INT_DEF_PRI <= GIC_PRIO_IRQOFF);
gic_write_pmr(GIC_PRIO_IRQOFF);
}
static inline void gic_arch_enable_irqs(void)
{
/* Should not get called yet. */
WARN_ON_ONCE(true);
asm volatile ("msr daifclr, #2" : : : "memory");
}
#endif /* __ASSEMBLY__ */