1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Host1x context devices
 4 *
 5 * Copyright (c) 2020, NVIDIA Corporation.
 6 */
 7
 8#ifndef __HOST1X_CONTEXT_H
 9#define __HOST1X_CONTEXT_H
10
11#include <linux/mutex.h>
12#include <linux/refcount.h>
13
14struct host1x;
15
16extern struct bus_type host1x_context_device_bus_type;
17
18struct host1x_memory_context_list {
19	struct mutex lock;
20	struct host1x_memory_context *devs;
21	unsigned int len;
22};
23
24#ifdef CONFIG_IOMMU_API
25int host1x_memory_context_list_init(struct host1x *host1x);
26void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl);
27#else
28static inline int host1x_memory_context_list_init(struct host1x *host1x)
29{
30	return 0;
31}
32
33static inline void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl)
34{
35}
36#endif
37
38#endif