From b6622a339e8670a1025d4dd84be473c76dabed33 Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Mon, 28 Aug 2017 23:23:32 -0700 Subject: powerpc/powernv: Move GET_FIELD/SET_FIELD to vas.h Move the GET_FIELD and SET_FIELD macros to vas.h as VAS and other users of VAS, including NX-842 can use those macros. There is a lot of related code between the VAS/NX kernel drivers and skiboot. For consistency, switch the order of parameters in SET_FIELD to match the order in skiboot. Signed-off-by: Sukadev Bhattiprolu Reviewed-by: Dan Streetman Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/vas.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/powerpc/include/asm/vas.h') diff --git a/arch/powerpc/include/asm/vas.h b/arch/powerpc/include/asm/vas.h index 9f81db68f27b..7dcf3bded343 100644 --- a/arch/powerpc/include/asm/vas.h +++ b/arch/powerpc/include/asm/vas.h @@ -29,6 +29,14 @@ #define VAS_THRESH_FIFO_GT_QTR_FULL 2 #define VAS_THRESH_FIFO_GT_EIGHTH_FULL 3 +/* + * Get/Set bit fields + */ +#define GET_FIELD(m, v) (((v) & (m)) >> MASK_LSH(m)) +#define MASK_LSH(m) (__builtin_ffsl(m) - 1) +#define SET_FIELD(m, v, val) \ + (((v) & ~(m)) | ((((typeof(v))(val)) << MASK_LSH(m)) & (m))) + /* * Co-processor Engine type. */ -- cgit v1.2.3