1 /* SPDX-License-Identifier: MIT */
2 /*
3  * Copyright © 2019 Intel Corporation
4  */
5 
6 #ifndef __I915_PERF_H__
7 #define __I915_PERF_H__
8 
9 #include <linux/kref.h>
10 #include <linux/types.h>
11 
12 #include "i915_perf_types.h"
13 
14 struct drm_device;
15 struct drm_file;
16 struct drm_i915_private;
17 struct i915_oa_config;
18 struct intel_context;
19 struct intel_engine_cs;
20 
21 void i915_perf_init(struct drm_i915_private *i915);
22 void i915_perf_fini(struct drm_i915_private *i915);
23 void i915_perf_register(struct drm_i915_private *i915);
24 void i915_perf_unregister(struct drm_i915_private *i915);
25 int i915_perf_ioctl_version(void);
26 int i915_perf_sysctl_register(void);
27 void i915_perf_sysctl_unregister(void);
28 
29 int i915_perf_open_ioctl(struct drm_device *dev, void *data,
30 			 struct drm_file *file);
31 int i915_perf_add_config_ioctl(struct drm_device *dev, void *data,
32 			       struct drm_file *file);
33 int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,
34 				  struct drm_file *file);
35 
36 void i915_oa_init_reg_state(const struct intel_context *ce,
37 			    const struct intel_engine_cs *engine);
38 
39 struct i915_oa_config *
40 i915_perf_get_oa_config(struct i915_perf *perf, int metrics_set);
41 
42 static inline struct i915_oa_config *
i915_oa_config_get(struct i915_oa_config * oa_config)43 i915_oa_config_get(struct i915_oa_config *oa_config)
44 {
45 	if (kref_get_unless_zero(&oa_config->ref))
46 		return oa_config;
47 	else
48 		return NULL;
49 }
50 
51 void i915_oa_config_release(struct kref *ref);
i915_oa_config_put(struct i915_oa_config * oa_config)52 static inline void i915_oa_config_put(struct i915_oa_config *oa_config)
53 {
54 	if (!oa_config)
55 		return;
56 
57 	kref_put(&oa_config->ref, i915_oa_config_release);
58 }
59 
60 #endif /* __I915_PERF_H__ */
61