xref: /openbmc/linux/drivers/gpu/host1x/channel.h (revision caccddcf)
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 
14 #include "cdma.h"
15 
16 struct host1x;
17 struct host1x_channel;
18 
19 struct host1x_channel_list {
20 	struct host1x_channel *channels;
21 	unsigned long *allocated_channels;
22 };
23 
24 struct host1x_channel {
25 	struct kref refcount;
26 	unsigned int id;
27 	struct mutex submitlock;
28 	void __iomem *regs;
29 	struct host1x_client *client;
30 	struct device *dev;
31 	struct host1x_cdma cdma;
32 };
33 
34 /* channel list operations */
35 int host1x_channel_list_init(struct host1x_channel_list *chlist,
36 			     unsigned int num_channels);
37 void host1x_channel_list_free(struct host1x_channel_list *chlist);
38 struct host1x_channel *host1x_channel_get_index(struct host1x *host,
39 						unsigned int index);
40 
41 #endif
42