65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*
|
|
* 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"
|
|
|
|
#define rbmemptr(ring, member) \
|
|
((ring)->memptrs_iova + offsetof(struct msm_rbmemptrs, member))
|
|
|
|
struct msm_rbmemptrs {
|
|
volatile uint32_t rptr;
|
|
volatile uint32_t fence;
|
|
};
|
|
|
|
struct msm_ringbuffer {
|
|
struct msm_gpu *gpu;
|
|
int id;
|
|
struct drm_gem_object *bo;
|
|
uint32_t *start, *end, *cur, *next;
|
|
struct list_head submits;
|
|
uint64_t iova;
|
|
uint32_t seqno;
|
|
uint32_t hangcheck_fence;
|
|
struct msm_rbmemptrs *memptrs;
|
|
uint64_t memptrs_iova;
|
|
struct msm_fence_context *fctx;
|
|
spinlock_t lock;
|
|
};
|
|
|
|
struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id,
|
|
void *memptrs, uint64_t memptrs_iova);
|
|
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)
|
|
{
|
|
/*
|
|
* ring->next points to the current command being written - it won't be
|
|
* committed as ring->cur until the flush
|
|
*/
|
|
if (ring->next == ring->end)
|
|
ring->next = ring->start;
|
|
*(ring->next++) = data;
|
|
}
|
|
|
|
#endif /* __MSM_RINGBUFFER_H__ */
|