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[Zesty,v4,10/13] powerpc: Add more PPC bit conversion macros

Message ID 20170529145439.31987-11-gwalbon@linux.vnet.ibm.com
State New
Headers show

Commit Message

Gustavo Walbon May 29, 2017, 2:54 p.m. UTC 
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

BugLink: http://bugs.launchpad.net/bugs/1691973

Add 32 and 8 bit variants

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
(cherry picked from commit 22bd64a621cc80beeb009abec3d3df98ec0131c5)
Signed-off-by: Gustavo Walbon <gwalbon@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/bitops.h | 8 ++++++++
 1 file changed, 8 insertions(+)
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Patch

diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h
index 5f057c7..a25c891 100644
--- a/arch/powerpc/include/asm/bitops.h
+++ b/arch/powerpc/include/asm/bitops.h
@@ -55,6 +55,14 @@ 
 #define PPC_BITEXTRACT(bits, ppc_bit, dst_bit)			\
 	((((bits) >> PPC_BITLSHIFT(ppc_bit)) & 1) << (dst_bit))
 
+#define PPC_BITLSHIFT32(be)	(32 - 1 - (be))
+#define PPC_BIT32(bit)		(1UL << PPC_BITLSHIFT32(bit))
+#define PPC_BITMASK32(bs, be)	((PPC_BIT32(bs) - PPC_BIT32(be))|PPC_BIT32(bs))
+
+#define PPC_BITLSHIFT8(be)	(8 - 1 - (be))
+#define PPC_BIT8(bit)		(1UL << PPC_BITLSHIFT8(bit))
+#define PPC_BITMASK8(bs, be)	((PPC_BIT8(bs) - PPC_BIT8(be))|PPC_BIT8(bs))
+
 #include <asm/barrier.h>
 
 /* Macro for generating the ***_bits() functions */