1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _HWBM_H
 3#define _HWBM_H
 4
 5struct 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	spinlock_t lock;
16	/* private data */
17	void *priv;
18};
19#ifdef CONFIG_HWBM
20void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf);
21int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp);
22int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num, gfp_t gfp);
23#else
24void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {}
25int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) { return 0; }
26int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num, gfp_t gfp)
27{ return 0; }
28#endif /* CONFIG_HWBM */
29#endif /* _HWBM_H */