Commit | Line | Data |
---|---|---|
7198e6b0 RC |
1 | /* |
2 | * Copyright (C) 2013 Red Hat | |
3 | * Author: Rob Clark <robdclark@gmail.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published by | |
7 | * the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | ||
18 | #ifndef __MSM_RINGBUFFER_H__ | |
19 | #define __MSM_RINGBUFFER_H__ | |
20 | ||
21 | #include "msm_drv.h" | |
22 | ||
23 | struct msm_ringbuffer { | |
24 | struct msm_gpu *gpu; | |
25 | int size; | |
26 | struct drm_gem_object *bo; | |
27 | uint32_t *start, *end, *cur; | |
28 | }; | |
29 | ||
30 | struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int size); | |
31 | void msm_ringbuffer_destroy(struct msm_ringbuffer *ring); | |
32 | ||
33 | /* ringbuffer helpers (the parts that are same for a3xx/a2xx/z180..) */ | |
34 | ||
35 | static inline void | |
36 | OUT_RING(struct msm_ringbuffer *ring, uint32_t data) | |
37 | { | |
38 | if (ring->cur == ring->end) | |
39 | ring->cur = ring->start; | |
40 | *(ring->cur++) = data; | |
41 | } | |
42 | ||
43 | #endif /* __MSM_RINGBUFFER_H__ */ |