projects / mirror_ubuntu-eoan-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 3a35780f DV |
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 | #define AQ_DIMOF(_ARY_) ARRAY_SIZE(_ARY_) | |
| 18 | ||
| 19 | struct aq_obj_s { | |
| 20 | spinlock_t lock; /* spinlock for nic/rings processing */ | |
| 21 | atomic_t flags; | |
| 3a35780f DV |
22 | }; |
| 23 | ||
| 24 | static inline void aq_utils_obj_set(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 void aq_utils_obj_clear(atomic_t *flags, u32 mask) | |
| 35 | { | |
| 36 | unsigned long flags_old, flags_new; | |
| 37 | ||
| 38 | do { | |
| 39 | flags_old = atomic_read(flags); | |
| 40 | flags_new = flags_old & ~(mask); | |
| 41 | } while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old); | |
| 42 | } | |
| 43 | ||
| 44 | static inline bool aq_utils_obj_test(atomic_t *flags, u32 mask) | |
| 45 | { | |
| 46 | return atomic_read(flags) & mask; | |
| 47 | } | |
| 48 | ||
| 49 | #endif /* AQ_UTILS_H */ |