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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - drivers/gpu/drm/msm/msm_ringbuffer.h
2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
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.
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
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/>.
18 #ifndef __MSM_RINGBUFFER_H__
19 #define __MSM_RINGBUFFER_H__
23 struct msm_ringbuffer
{
26 struct drm_gem_object
*bo
;
27 uint32_t *start
, *end
, *cur
;
30 struct msm_ringbuffer
*msm_ringbuffer_new(struct msm_gpu
*gpu
, int size
);
31 void msm_ringbuffer_destroy(struct msm_ringbuffer
*ring
);
33 /* ringbuffer helpers (the parts that are same for a3xx/a2xx/z180..) */
36 OUT_RING(struct msm_ringbuffer
*ring
, uint32_t data
)
38 if (ring
->cur
== ring
->end
)
39 ring
->cur
= ring
->start
;
40 *(ring
->cur
++) = data
;
43 #endif /* __MSM_RINGBUFFER_H__ */