| Chris Zankel | 1387dab | 2016-08-10 18:36:44 +0300 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2001 - 2012 Tensilica Inc. |
| 3 | * Copyright (C) 2014 - 2016 Cadence Design Systems Inc. |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | |
| 8 | #ifndef _XTENSA_BITOPS_H |
| 9 | #define _XTENSA_BITOPS_H |
| 10 | |
| 11 | #include <asm/system.h> |
| 12 | #include <asm-generic/bitops/fls.h> |
| 13 | #include <asm-generic/bitops/__fls.h> |
| 14 | #include <asm-generic/bitops/fls64.h> |
| 15 | #include <asm-generic/bitops/__ffs.h> |
| 16 | |
| 17 | static inline int test_bit(int nr, const void *addr) |
| 18 | { |
| 19 | return ((unsigned char *)addr)[nr >> 3] & (1u << (nr & 7)); |
| 20 | } |
| 21 | |
| 22 | static inline int test_and_set_bit(int nr, volatile void *addr) |
| 23 | { |
| 24 | unsigned long flags; |
| 25 | unsigned char tmp; |
| 26 | unsigned char mask = 1u << (nr & 7); |
| 27 | |
| 28 | local_irq_save(flags); |
| 29 | tmp = ((unsigned char *)addr)[nr >> 3]; |
| 30 | ((unsigned char *)addr)[nr >> 3] |= mask; |
| 31 | local_irq_restore(flags); |
| 32 | |
| 33 | return tmp & mask; |
| 34 | } |
| 35 | |
| 36 | #endif /* _XTENSA_BITOPS_H */ |