/* 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 allocation */
        int (*construct)(struct hwbm_pool *bm_pool, void *buf);
        /* protect access 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 */