1/* SPDX-License-Identifier: MIT */
 2/*
 3 * Copyright © 2020 Intel Corporation
 4 */
 5
 6#ifndef __I915_DRM_CLIENT_H__
 7#define __I915_DRM_CLIENT_H__
 8
 9#include <linux/kref.h>
10#include <linux/list.h>
11#include <linux/spinlock.h>
12#include <linux/xarray.h>
13
14#include <uapi/drm/i915_drm.h>
15
16#define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_COMPUTE
17
18struct drm_i915_private;
19
20struct i915_drm_clients {
21	struct drm_i915_private *i915;
22
23	struct xarray xarray;
24	u32 next_id;
25};
26
27struct i915_drm_client {
28	struct kref kref;
29
30	unsigned int id;
31
32	spinlock_t ctx_lock; /* For add/remove from ctx_list. */
33	struct list_head ctx_list; /* List of contexts belonging to client. */
34
35	struct i915_drm_clients *clients;
36
37	/**
38	 * @past_runtime: Accumulation of pphwsp runtimes from closed contexts.
39	 */
40	atomic64_t past_runtime[I915_LAST_UABI_ENGINE_CLASS + 1];
41};
42
43void i915_drm_clients_init(struct i915_drm_clients *clients,
44			   struct drm_i915_private *i915);
45
46static inline struct i915_drm_client *
47i915_drm_client_get(struct i915_drm_client *client)
48{
49	kref_get(&client->kref);
50	return client;
51}
52
53void __i915_drm_client_free(struct kref *kref);
54
55static inline void i915_drm_client_put(struct i915_drm_client *client)
56{
57	kref_put(&client->kref, __i915_drm_client_free);
58}
59
60struct i915_drm_client *i915_drm_client_add(struct i915_drm_clients *clients);
61
62#ifdef CONFIG_PROC_FS
63void i915_drm_client_fdinfo(struct seq_file *m, struct file *f);
64#endif
65
66void i915_drm_clients_fini(struct i915_drm_clients *clients);
67
68#endif /* !__I915_DRM_CLIENT_H__ */