1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * aQuantia Corporation Network Driver 4 * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved 5 */ 6 7 /* File aq_utils.h: Useful macro and structures used in all layers of driver. */ 8 9 #ifndef AQ_UTILS_H 10 #define AQ_UTILS_H 11 12 #include "aq_common.h" 13 14 static inline void aq_utils_obj_set(atomic_t *flags, u32 mask) 15 { 16 unsigned long flags_old, flags_new; 17 18 do { 19 flags_old = atomic_read(flags); 20 flags_new = flags_old | (mask); 21 } while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old); 22 } 23 24 static inline void aq_utils_obj_clear(atomic_t *flags, u32 mask) 25 { 26 unsigned long flags_old, flags_new; 27 28 do { 29 flags_old = atomic_read(flags); 30 flags_new = flags_old & ~(mask); 31 } while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old); 32 } 33 34 static inline bool aq_utils_obj_test(atomic_t *flags, u32 mask) 35 { 36 return atomic_read(flags) & mask; 37 } 38 39 #endif /* AQ_UTILS_H */ 40