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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/blackfin/include/asm/bitops.h
Initial import
Diffstat (limited to 'arch/blackfin/include/asm/bitops.h')
-rw-r--r--arch/blackfin/include/asm/bitops.h140
1 files changed, 140 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/bitops.h b/arch/blackfin/include/asm/bitops.h
new file mode 100644
index 000000000..b298b654a
--- /dev/null
+++ b/arch/blackfin/include/asm/bitops.h
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2004-2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef _BLACKFIN_BITOPS_H
+#define _BLACKFIN_BITOPS_H
+
+#include <linux/compiler.h>
+
+#include <asm-generic/bitops/__ffs.h>
+#include <asm-generic/bitops/ffz.h>
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/__fls.h>
+#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/find.h>
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/ffs.h>
+#include <asm-generic/bitops/const_hweight.h>
+#include <asm-generic/bitops/lock.h>
+
+#include <asm-generic/bitops/ext2-atomic.h>
+
+#include <asm/barrier.h>
+
+#ifndef CONFIG_SMP
+#include <linux/irqflags.h>
+/*
+ * clear_bit may not imply a memory barrier
+ */
+#include <asm-generic/bitops/atomic.h>
+#include <asm-generic/bitops/non-atomic.h>
+#else
+
+#include <asm/byteorder.h> /* swab32 */
+#include <linux/linkage.h>
+
+asmlinkage int __raw_bit_set_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_clear_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_toggle_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_test_set_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_test_clear_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_test_toggle_asm(volatile unsigned long *addr, int nr);
+
+asmlinkage int __raw_bit_test_asm(const volatile unsigned long *addr, int nr);
+
+static inline void set_bit(int nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr + (nr >> 5);
+ __raw_bit_set_asm(a, nr & 0x1f);
+}
+
+static inline void clear_bit(int nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr + (nr >> 5);
+ __raw_bit_clear_asm(a, nr & 0x1f);
+}
+
+static inline void change_bit(int nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr + (nr >> 5);
+ __raw_bit_toggle_asm(a, nr & 0x1f);
+}
+
+static inline int test_bit(int nr, const volatile unsigned long *addr)
+{
+ volatile const unsigned long *a = addr + (nr >> 5);
+ return __raw_bit_test_asm(a, nr & 0x1f) != 0;
+}
+
+static inline int test_and_set_bit(int nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr + (nr >> 5);
+ return __raw_bit_test_set_asm(a, nr & 0x1f);
+}
+
+static inline int test_and_clear_bit(int nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr + (nr >> 5);
+ return __raw_bit_test_clear_asm(a, nr & 0x1f);
+}
+
+static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr + (nr >> 5);
+ return __raw_bit_test_toggle_asm(a, nr & 0x1f);
+}
+
+#define test_bit __skip_test_bit
+#include <asm-generic/bitops/non-atomic.h>
+#undef test_bit
+
+#endif /* CONFIG_SMP */
+
+/* Needs to be after test_bit and friends */
+#include <asm-generic/bitops/le.h>
+
+/*
+ * hweightN: returns the hamming weight (i.e. the number
+ * of bits set) of a N-bit word
+ */
+
+static inline unsigned int __arch_hweight32(unsigned int w)
+{
+ unsigned int res;
+
+ __asm__ ("%0.l = ONES %1;"
+ "%0 = %0.l (Z);"
+ : "=d" (res) : "d" (w));
+ return res;
+}
+
+static inline unsigned int __arch_hweight64(__u64 w)
+{
+ return __arch_hweight32((unsigned int)(w >> 32)) +
+ __arch_hweight32((unsigned int)w);
+}
+
+static inline unsigned int __arch_hweight16(unsigned int w)
+{
+ return __arch_hweight32(w & 0xffff);
+}
+
+static inline unsigned int __arch_hweight8(unsigned int w)
+{
+ return __arch_hweight32(w & 0xff);
+}
+
+#endif /* _BLACKFIN_BITOPS_H */