arch/arm64/include/asm/bitops.h

   1 /*
   2  * Copyright (C) 2012 ARM Ltd.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  */
  16 #ifndef __ASM_BITOPS_H
  17 #define __ASM_BITOPS_H
  18
  19 #include <linux/compiler.h>
  20 #include <asm/barrier.h>
  21
  22 #ifndef _LINUX_BITOPS_H
  23 #error only <linux/bitops.h> can be included directly
  24 #endif
  25
  26 /*
  27  * Little endian assembly atomic bitops.
  28  */
  29 extern void set_bit(int nr, volatile unsigned long *p);
  30 extern void clear_bit(int nr, volatile unsigned long *p);
  31 extern void change_bit(int nr, volatile unsigned long *p);
  32 extern int test_and_set_bit(int nr, volatile unsigned long *p);
  33 extern int test_and_clear_bit(int nr, volatile unsigned long *p);
  34 extern int test_and_change_bit(int nr, volatile unsigned long *p);
  35
  36 #include <asm-generic/bitops/builtin-__ffs.h>
  37 #include <asm-generic/bitops/builtin-ffs.h>
  38 #include <asm-generic/bitops/builtin-__fls.h>
  39 #include <asm-generic/bitops/builtin-fls.h>
  40
  41 #include <asm-generic/bitops/ffz.h>
  42 #include <asm-generic/bitops/fls64.h>
  43 #include <asm-generic/bitops/find.h>
  44
  45 #include <asm-generic/bitops/sched.h>
  46 #include <asm-generic/bitops/hweight.h>
  47 #include <asm-generic/bitops/lock.h>
  48
  49 #include <asm-generic/bitops/non-atomic.h>
  50 #include <asm-generic/bitops/le.h>
  51
  52 /*
  53  * Ext2 is defined to use little-endian byte ordering.
  54  */
  55 #define ext2_set_bit_atomic(lock, nr, p)        test_and_set_bit_le(nr, p)
  56 #define ext2_clear_bit_atomic(lock, nr, p)      test_and_clear_bit_le(nr, p)
  57
  58 #endif /* __ASM_BITOPS_H */