drivers/gpu/drm/i915/i915_drm_client.h

   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 "gt/intel_engine_types.h"
  15
  16 #define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_VIDEO_ENHANCE
  17
  18 struct drm_i915_private;
  19
  20 struct i915_drm_clients {
  21         struct drm_i915_private *i915;
  22
  23         struct xarray xarray;
  24         u32 next_id;
  25 };
  26
  27 struct 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
  43 void i915_drm_clients_init(struct i915_drm_clients *clients,
  44                            struct drm_i915_private *i915);
  45
  46 static inline struct i915_drm_client *
  47 i915_drm_client_get(struct i915_drm_client *client)
  48 {
  49         kref_get(&client->kref);
  50         return client;
  51 }
  52
  53 void __i915_drm_client_free(struct kref *kref);
  54
  55 static inline void i915_drm_client_put(struct i915_drm_client *client)
  56 {
  57         kref_put(&client->kref, __i915_drm_client_free);
  58 }
  59
  60 struct i915_drm_client *i915_drm_client_add(struct i915_drm_clients *clients);
  61
  62 #ifdef CONFIG_PROC_FS
  63 void i915_drm_client_fdinfo(struct seq_file *m, struct file *f);
  64 #endif
  65
  66 void i915_drm_clients_fini(struct i915_drm_clients *clients);
  67
  68 #endif /* !__I915_DRM_CLIENT_H__ */