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 
13 #include <uapi/drm/i915_drm.h>
14 
15 #define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_COMPUTE
16 
17 struct drm_file;
18 struct drm_printer;
19 
20 struct i915_drm_client {
21 	struct kref kref;
22 
23 	unsigned int id;
24 
25 	spinlock_t ctx_lock; /* For add/remove from ctx_list. */
26 	struct list_head ctx_list; /* List of contexts belonging to client. */
27 
28 	/**
29 	 * @past_runtime: Accumulation of pphwsp runtimes from closed contexts.
30 	 */
31 	atomic64_t past_runtime[I915_LAST_UABI_ENGINE_CLASS + 1];
32 };
33 
34 static inline struct i915_drm_client *
i915_drm_client_get(struct i915_drm_client * client)35 i915_drm_client_get(struct i915_drm_client *client)
36 {
37 	kref_get(&client->kref);
38 	return client;
39 }
40 
41 void __i915_drm_client_free(struct kref *kref);
42 
i915_drm_client_put(struct i915_drm_client * client)43 static inline void i915_drm_client_put(struct i915_drm_client *client)
44 {
45 	kref_put(&client->kref, __i915_drm_client_free);
46 }
47 
48 struct i915_drm_client *i915_drm_client_alloc(void);
49 
50 void i915_drm_client_fdinfo(struct drm_printer *p, struct drm_file *file);
51 
52 #endif /* !__I915_DRM_CLIENT_H__ */
53