| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _HWBM_H |
| #define _HWBM_H |
| |
| #include <linux/mutex.h> |
| |
| struct hwbm_pool { |
| /* Capacity of the pool */ |
| int size; |
| /* Size of the buffers managed */ |
| int frag_size; |
| /* Number of buffers currently used by this pool */ |
| int buf_num; |
| /* constructor called during alocation */ |
| int (*construct)(struct hwbm_pool *bm_pool, void *buf); |
| /* protect acces to the buffer counter*/ |
| struct mutex buf_lock; |
| /* private data */ |
| void *priv; |
| }; |
| #ifdef CONFIG_HWBM |
| void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf); |
| int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp); |
| int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num); |
| #else |
| static inline void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {} |
| |
| static inline int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) |
| { return 0; } |
| |
| static inline int hwbm_pool_add(struct hwbm_pool *bm_pool, |
| unsigned int buf_num) |
| { return 0; } |
| #endif /* CONFIG_HWBM */ |
| #endif /* _HWBM_H */ |
