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Commit b334481a authored by Julien Thierry's avatar Julien Thierry Committed by Catalin Marinas
Browse files

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



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

Signed-off-by: default avatarJulien Thierry <julien.thierry@arm.com>
Suggested-by: default avatarDaniel Thompson <daniel.thompson@linaro.org>
Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent e7932188

arch/arm64/include/asm/arch_gicv3.h

+4 −4
Original line number Diff line number Diff line
@@ -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__ */