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 */ 59