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/*
* aQuantia Corporation Network Driver
* Copyright (C) 2014-2017 aQuantia Corporation. All rights reserved
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*/
/* File aq_utils.h: Useful macro and structures used in all layers of driver. */
#ifndef AQ_UTILS_H
#define AQ_UTILS_H
#include "aq_common.h"
#define AQ_DIMOF(_ARY_) ARRAY_SIZE(_ARY_)
struct aq_obj_s {
spinlock_t lock; /* spinlock for nic/rings processing */
atomic_t flags;
};
static inline void aq_utils_obj_set(atomic_t *flags, u32 mask)
{
unsigned long flags_old, flags_new;
do {
flags_old = atomic_read(flags);
flags_new = flags_old | (mask);
} while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old);
}
static inline void aq_utils_obj_clear(atomic_t *flags, u32 mask)
{
unsigned long flags_old, flags_new;
do {
flags_old = atomic_read(flags);
flags_new = flags_old & ~(mask);
} while (atomic_cmpxchg(flags, flags_old, flags_new) != flags_old);
}
static inline bool aq_utils_obj_test(atomic_t *flags, u32 mask)
{
return atomic_read(flags) & mask;
}
#endif /* AQ_UTILS_H */
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