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 */
30