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
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
23struct msm_ringbuffer {
24	struct msm_gpu *gpu;
25	int size;
26	struct drm_gem_object *bo;
27	uint32_t *start, *end, *cur;
 
 
 
 
 
 
 
 
28};
29
30struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int size);
 
31void msm_ringbuffer_destroy(struct msm_ringbuffer *ring);
32
33/* ringbuffer helpers (the parts that are same for a3xx/a2xx/z180..) */
34
35static inline void
36OUT_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__ */

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2013 Red Hat
 4 * Author: Rob Clark <robdclark@gmail.com>
 
 
 
 
 
 
 
 
 
 
 
 
 5 */
 6
 7#ifndef __MSM_RINGBUFFER_H__
 8#define __MSM_RINGBUFFER_H__
 9
10#include "msm_drv.h"
11
12#define rbmemptr(ring, member)  \
13	((ring)->memptrs_iova + offsetof(struct msm_rbmemptrs, member))
14
15#define rbmemptr_stats(ring, index, member) \
16	(rbmemptr((ring), stats) + \
17	 ((index) * sizeof(struct msm_gpu_submit_stats)) + \
18	 offsetof(struct msm_gpu_submit_stats, member))
19
20struct msm_gpu_submit_stats {
21	u64 cpcycles_start;
22	u64 cpcycles_end;
23	u64 alwayson_start;
24	u64 alwayson_end;
25};
26
27#define MSM_GPU_SUBMIT_STATS_COUNT 64
28
29struct msm_rbmemptrs {
30	volatile uint32_t rptr;
31	volatile uint32_t fence;
32
33	volatile struct msm_gpu_submit_stats stats[MSM_GPU_SUBMIT_STATS_COUNT];
34};
35
36struct msm_ringbuffer {
37	struct msm_gpu *gpu;
38	int id;
39	struct drm_gem_object *bo;
40	uint32_t *start, *end, *cur, *next;
41	struct list_head submits;
42	uint64_t iova;
43	uint32_t seqno;
44	uint32_t hangcheck_fence;
45	struct msm_rbmemptrs *memptrs;
46	uint64_t memptrs_iova;
47	struct msm_fence_context *fctx;
48	spinlock_t lock;
49};
50
51struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id,
52		void *memptrs, uint64_t memptrs_iova);
53void msm_ringbuffer_destroy(struct msm_ringbuffer *ring);
54
55/* ringbuffer helpers (the parts that are same for a3xx/a2xx/z180..) */
56
57static inline void
58OUT_RING(struct msm_ringbuffer *ring, uint32_t data)
59{
60	/*
61	 * ring->next points to the current command being written - it won't be
62	 * committed as ring->cur until the flush
63	 */
64	if (ring->next == ring->end)
65		ring->next = ring->start;
66	*(ring->next++) = data;
67}
68
69#endif /* __MSM_RINGBUFFER_H__ */