1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Tegra host1x Channel
4  *
5  * Copyright (c) 2010-2013, NVIDIA Corporation.
6  */
7 
8 #ifndef __HOST1X_CHANNEL_H
9 #define __HOST1X_CHANNEL_H
10 
11 #include <linux/io.h>
12 #include <linux/kref.h>
13 #include <linux/mutex.h>
14 
15 #include "cdma.h"
16 
17 struct host1x;
18 struct host1x_channel;
19 
20 struct host1x_channel_list {
21 	struct host1x_channel *channels;
22 
23 	struct mutex lock;
24 	unsigned long *allocated_channels;
25 };
26 
27 struct host1x_channel {
28 	struct kref refcount;
29 	unsigned int id;
30 	struct mutex submitlock;
31 	void __iomem *regs;
32 	struct host1x_client *client;
33 	struct device *dev;
34 	struct host1x_cdma cdma;
35 };
36 
37 /* channel list operations */
38 int host1x_channel_list_init(struct host1x_channel_list *chlist,
39 			     unsigned int num_channels);
40 void host1x_channel_list_free(struct host1x_channel_list *chlist);
41 struct host1x_channel *host1x_channel_get_index(struct host1x *host,
42 						unsigned int index);
43 void host1x_channel_stop_all(struct host1x *host);
44 
45 #endif
46