1 /*
2 * Tegra host1x Memory Management Abstraction header
3 *
4 * Copyright (c) 2012-2013, NVIDIA Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 #ifndef _HOST1X_BO_H
20 #define _HOST1X_BO_H
21
22 struct host1x_bo;
23
24 struct host1x_bo_ops {
25 struct host1x_bo *(*get)(struct host1x_bo *bo);
26 void (*put)(struct host1x_bo *bo);
27 dma_addr_t (*pin)(struct host1x_bo *bo, struct sg_table **sgt);
28 void (*unpin)(struct host1x_bo *bo, struct sg_table *sgt);
29 void *(*mmap)(struct host1x_bo *bo);
30 void (*munmap)(struct host1x_bo *bo, void *addr);
31 void *(*kmap)(struct host1x_bo *bo, unsigned int pagenum);
32 void (*kunmap)(struct host1x_bo *bo, unsigned int pagenum, void *addr);
33 };
34
35 struct host1x_bo {
36 const struct host1x_bo_ops *ops;
37 };
38
host1x_bo_init(struct host1x_bo * bo,const struct host1x_bo_ops * ops)39 static inline void host1x_bo_init(struct host1x_bo *bo,
40 const struct host1x_bo_ops *ops)
41 {
42 bo->ops = ops;
43 }
44
host1x_bo_get(struct host1x_bo * bo)45 static inline struct host1x_bo *host1x_bo_get(struct host1x_bo *bo)
46 {
47 return bo->ops->get(bo);
48 }
49
host1x_bo_put(struct host1x_bo * bo)50 static inline void host1x_bo_put(struct host1x_bo *bo)
51 {
52 bo->ops->put(bo);
53 }
54
host1x_bo_pin(struct host1x_bo * bo,struct sg_table ** sgt)55 static inline dma_addr_t host1x_bo_pin(struct host1x_bo *bo,
56 struct sg_table **sgt)
57 {
58 return bo->ops->pin(bo, sgt);
59 }
60
host1x_bo_unpin(struct host1x_bo * bo,struct sg_table * sgt)61 static inline void host1x_bo_unpin(struct host1x_bo *bo, struct sg_table *sgt)
62 {
63 bo->ops->unpin(bo, sgt);
64 }
65
host1x_bo_mmap(struct host1x_bo * bo)66 static inline void *host1x_bo_mmap(struct host1x_bo *bo)
67 {
68 return bo->ops->mmap(bo);
69 }
70
host1x_bo_munmap(struct host1x_bo * bo,void * addr)71 static inline void host1x_bo_munmap(struct host1x_bo *bo, void *addr)
72 {
73 bo->ops->munmap(bo, addr);
74 }
75
host1x_bo_kmap(struct host1x_bo * bo,unsigned int pagenum)76 static inline void *host1x_bo_kmap(struct host1x_bo *bo, unsigned int pagenum)
77 {
78 return bo->ops->kmap(bo, pagenum);
79 }
80
host1x_bo_kunmap(struct host1x_bo * bo,unsigned int pagenum,void * addr)81 static inline void host1x_bo_kunmap(struct host1x_bo *bo,
82 unsigned int pagenum, void *addr)
83 {
84 bo->ops->kunmap(bo, pagenum, addr);
85 }
86
87 #endif
88