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/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MSM_RINGBUFFER_H__
#define __MSM_RINGBUFFER_H__
#include "msm_drv.h"
struct msm_ringbuffer {
struct msm_gpu *gpu;
int size;
struct drm_gem_object *bo;
uint32_t *start, *end, *cur;
};
struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int size);
void msm_ringbuffer_destroy(struct msm_ringbuffer *ring);
/* ringbuffer helpers (the parts that are same for a3xx/a2xx/z180..) */
static inline void
OUT_RING(struct msm_ringbuffer *ring, uint32_t data)
{
if (ring->cur == ring->end)
ring->cur = ring->start;
*(ring->cur++) = data;
}
#endif /* __MSM_RINGBUFFER_H__ */
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