summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/host1x/channel.h
blob: d7aede204d83d6105e48371dbd97de1b286404be (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Tegra host1x Channel
 *
 * Copyright (c) 2010-2013, NVIDIA Corporation.
 */

#ifndef __HOST1X_CHANNEL_H
#define __HOST1X_CHANNEL_H

#include <linux/io.h>
#include <linux/kref.h>
#include <linux/mutex.h>

#include "cdma.h"

struct host1x;
struct host1x_channel;

struct host1x_channel_list {
	struct host1x_channel *channels;

	struct mutex lock;
	unsigned long *allocated_channels;
};

struct host1x_channel {
	struct kref refcount;
	unsigned int id;
	struct mutex submitlock;
	void __iomem *regs;
	struct host1x_client *client;
	struct device *dev;
	struct host1x_cdma cdma;
};

/* channel list operations */
int host1x_channel_list_init(struct host1x_channel_list *chlist,
			     unsigned int num_channels);
void host1x_channel_list_free(struct host1x_channel_list *chlist);
struct host1x_channel *host1x_channel_get_index(struct host1x *host,
						unsigned int index);
void host1x_channel_stop_all(struct host1x *host);

#endif