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: 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>
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@ -22,6 +22,7 @@
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#ifndef __ASSEMBLY__
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#include <linux/irqchip/arm-gic-common.h>
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#include <linux/stringify.h>
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#include <asm/barrier.h>
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#include <asm/cacheflush.h>
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@ -162,14 +163,13 @@ static inline bool gic_prio_masking_enabled(void)
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static inline void gic_pmr_mask_irqs(void)
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{
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/* Should not get called yet. */
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WARN_ON_ONCE(true);
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BUILD_BUG_ON(GICD_INT_DEF_PRI <= GIC_PRIO_IRQOFF);
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gic_write_pmr(GIC_PRIO_IRQOFF);
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}
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static inline void gic_arch_enable_irqs(void)
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{
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/* Should not get called yet. */
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WARN_ON_ONCE(true);
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asm volatile ("msr daifclr, #2" : : : "memory");
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}
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#endif /* __ASSEMBLY__ */
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