1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _HWBM_H |
3 | #define _HWBM_H |
4 | |
5 | #include <linux/mutex.h> |
6 | |
7 | struct hwbm_pool { |
8 | /* Capacity of the pool */ |
9 | int size; |
10 | /* Size of the buffers managed */ |
11 | int frag_size; |
12 | /* Number of buffers currently used by this pool */ |
13 | int buf_num; |
14 | /* constructor called during alocation */ |
15 | int (*construct)(struct hwbm_pool *bm_pool, void *buf); |
16 | /* protect acces to the buffer counter*/ |
17 | struct mutex buf_lock; |
18 | /* private data */ |
19 | void *priv; |
20 | }; |
21 | #ifdef CONFIG_HWBM |
22 | void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf); |
23 | int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp); |
24 | int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num); |
25 | #else |
26 | static inline void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) {} |
27 | |
28 | static inline int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) |
29 | { return 0; } |
30 | |
31 | static inline int hwbm_pool_add(struct hwbm_pool *bm_pool, |
32 | unsigned int buf_num) |
33 | { return 0; } |
34 | #endif /* CONFIG_HWBM */ |
35 | #endif /* _HWBM_H */ |
36 | |