162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef _HWBM_H 362306a36Sopenharmony_ci#define _HWBM_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/mutex.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_cistruct hwbm_pool { 862306a36Sopenharmony_ci /* Capacity of the pool */ 962306a36Sopenharmony_ci int size; 1062306a36Sopenharmony_ci /* Size of the buffers managed */ 1162306a36Sopenharmony_ci int frag_size; 1262306a36Sopenharmony_ci /* Number of buffers currently used by this pool */ 1362306a36Sopenharmony_ci int buf_num; 1462306a36Sopenharmony_ci /* constructor called during alocation */ 1562306a36Sopenharmony_ci int (*construct)(struct hwbm_pool *bm_pool, void *buf); 1662306a36Sopenharmony_ci /* protect acces to the buffer counter*/ 1762306a36Sopenharmony_ci struct mutex buf_lock; 1862306a36Sopenharmony_ci /* private data */ 1962306a36Sopenharmony_ci void *priv; 2062306a36Sopenharmony_ci}; 2162306a36Sopenharmony_ci#ifdef CONFIG_HWBM 2262306a36Sopenharmony_civoid hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf); 2362306a36Sopenharmony_ciint hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp); 2462306a36Sopenharmony_ciint hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num); 2562306a36Sopenharmony_ci#else 2662306a36Sopenharmony_cistatic inline void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {} 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_cistatic inline int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) 2962306a36Sopenharmony_ci{ return 0; } 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_cistatic inline int hwbm_pool_add(struct hwbm_pool *bm_pool, 3262306a36Sopenharmony_ci unsigned int buf_num) 3362306a36Sopenharmony_ci{ return 0; } 3462306a36Sopenharmony_ci#endif /* CONFIG_HWBM */ 3562306a36Sopenharmony_ci#endif /* _HWBM_H */ 36