| Rob Clark | 7198e6b | 2013-07-19 12:59:32 -0400 | [diff] [blame] | 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__ */ |