Merge tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...

[firefly-linux-kernel-4.4.55.git] / include / linux / bitops.h

diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index a3b6b82108b9ad239dd1dda1abe6c8e3f585d3b3..abc9ca7784568ba5737add4fce84577348428eac 100644 (file)
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -4,12 +4,23 @@
 
 #ifdef __KERNEL__
 #define BIT(nr)                        (1UL << (nr))
+#define BIT_ULL(nr)            (1ULL << (nr))
 #define BIT_MASK(nr)           (1UL << ((nr) % BITS_PER_LONG))
 #define BIT_WORD(nr)           ((nr) / BITS_PER_LONG)
+#define BIT_ULL_MASK(nr)       (1ULL << ((nr) % BITS_PER_LONG_LONG))
+#define BIT_ULL_WORD(nr)       ((nr) / BITS_PER_LONG_LONG)
 #define BITS_PER_BYTE          8
 #define BITS_TO_LONGS(nr)      DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
 #endif
 
+/*
+ * Create a contiguous bitmask starting at bit position @l and ending at
+ * position @h. For example
+ * GENMASK_ULL(39, 21) gives us the 64bit vector 0x000000ffffe00000.
+ */
+#define GENMASK(h, l)          (((U32_C(1) << ((h) - (l) + 1)) - 1) << (l))
+#define GENMASK_ULL(h, l)      (((U64_C(1) << ((h) - (l) + 1)) - 1) << (l))
+
 extern unsigned int __sw_hweight8(unsigned int w);
 extern unsigned int __sw_hweight16(unsigned int w);
 extern unsigned int __sw_hweight32(unsigned int w);