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[PULL,43/50] ARM: Introduce MPIDR_LEVEL_SHIFT macro

Message ID 20160927180558.14699-44-christoffer.dall@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Christoffer Dall Sept. 27, 2016, 6:05 p.m. UTC 
From: Vladimir Murzin <vladimir.murzin@arm.com>

vgic-v3 driver uses architecture specific MPIDR_LEVEL_SHIFT macro to
encode the affinity in a form compatible with ICC_SGI* registers.
Unfortunately, that macro is missing on ARM, so let's add it.

Cc: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
---
 arch/arm/include/asm/cputype.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
index 1ee94c7..e2d94c1 100644
--- a/arch/arm/include/asm/cputype.h
+++ b/arch/arm/include/asm/cputype.h
@@ -55,6 +55,7 @@ 
 
 #define MPIDR_LEVEL_BITS 8
 #define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1)
+#define MPIDR_LEVEL_SHIFT(level) (MPIDR_LEVEL_BITS * level)
 
 #define MPIDR_AFFINITY_LEVEL(mpidr, level) \
 	((mpidr >> (MPIDR_LEVEL_BITS * level)) & MPIDR_LEVEL_MASK)