1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _HWBM_H 3 #define _HWBM_H 4 5 struct hwbm_pool { 6 /* Capacity of the pool */ 7 int size; 8 /* Size of the buffers managed */ 9 int frag_size; 10 /* Number of buffers currently used by this pool */ 11 int buf_num; 12 /* constructor called during alocation */ 13 int (*construct)(struct hwbm_pool *bm_pool, void *buf); 14 /* protect acces to the buffer counter*/ 15 struct mutex buf_lock; 16 /* private data */ 17 void *priv; 18 }; 19 #ifdef CONFIG_HWBM 20 void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf); 21 int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp); 22 int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num); 23 #else 24 static inline void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {} 25 26 static inline int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) 27 { return 0; } 28 29 static inline int hwbm_pool_add(struct hwbm_pool *bm_pool, 30 unsigned int buf_num) 31 { return 0; } 32 #endif /* CONFIG_HWBM */ 33 #endif /* _HWBM_H */ 34