drivers/net/ethernet/aquantia/atlantic/aq_utils.h

   1 /*
   2  * aQuantia Corporation Network Driver
   3  * Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  */
   9
  10 /* File aq_utils.h: Useful macro and structures used in all layers of driver. */
  11
  12 #ifndef AQ_UTILS_H
  13 #define AQ_UTILS_H
  14
  15 #include "aq_common.h"
  16
  17 static inline void aq_utils_obj_set(atomic_t *flags, u32 mask)
  18 {
  19         unsigned long flags_old, flags_new;
  20
  21         do {
  22                 flags_old = atomic_read(flags);
  23                 flags_new = flags_old | (mask);
  24         } while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old);
  25 }
  26
  27 static inline void aq_utils_obj_clear(atomic_t *flags, u32 mask)
  28 {
  29         unsigned long flags_old, flags_new;
  30
  31         do {
  32                 flags_old = atomic_read(flags);
  33                 flags_new = flags_old & ~(mask);
  34         } while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old);
  35 }
  36
  37 static inline bool aq_utils_obj_test(atomic_t *flags, u32 mask)
  38 {
  39         return atomic_read(flags) & mask;
  40 }
  41
  42 #endif /* AQ_UTILS_H */