1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _DRM_AGPSUPPORT_H_
3 #define _DRM_AGPSUPPORT_H_
4
5 #include <linux/agp_backend.h>
6 #include <linux/kernel.h>
7 #include <linux/list.h>
8 #include <linux/mm.h>
9 #include <linux/mutex.h>
10 #include <linux/types.h>
11 #include <uapi/drm/drm.h>
12
13 struct drm_device;
14 struct drm_file;
15
16 struct drm_agp_head {
17 struct agp_kern_info agp_info;
18 struct list_head memory;
19 unsigned long mode;
20 struct agp_bridge_data *bridge;
21 int enabled;
22 int acquired;
23 unsigned long base;
24 int agp_mtrr;
25 int cant_use_aperture;
26 unsigned long page_mask;
27 };
28
29 #if IS_ENABLED(CONFIG_AGP)
30
31 void drm_free_agp(struct agp_memory * handle, int pages);
32 int drm_bind_agp(struct agp_memory * handle, unsigned int start);
33 int drm_unbind_agp(struct agp_memory * handle);
34 struct agp_memory *drm_agp_bind_pages(struct drm_device *dev,
35 struct page **pages,
36 unsigned long num_pages,
37 uint32_t gtt_offset,
38 uint32_t type);
39
40 struct drm_agp_head *drm_agp_init(struct drm_device *dev);
41 void drm_legacy_agp_clear(struct drm_device *dev);
42 int drm_agp_acquire(struct drm_device *dev);
43 int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
44 struct drm_file *file_priv);
45 int drm_agp_release(struct drm_device *dev);
46 int drm_agp_release_ioctl(struct drm_device *dev, void *data,
47 struct drm_file *file_priv);
48 int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
49 int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
50 struct drm_file *file_priv);
51 int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
52 int drm_agp_info_ioctl(struct drm_device *dev, void *data,
53 struct drm_file *file_priv);
54 int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
55 int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
56 struct drm_file *file_priv);
57 int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
58 int drm_agp_free_ioctl(struct drm_device *dev, void *data,
59 struct drm_file *file_priv);
60 int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
61 int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
62 struct drm_file *file_priv);
63 int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
64 int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
65 struct drm_file *file_priv);
66
67 #else /* CONFIG_AGP */
68
69 static inline void drm_free_agp(struct agp_memory * handle, int pages)
70 {
71 }
72
73 static inline int drm_bind_agp(struct agp_memory * handle, unsigned int start)
74 {
75 return -ENODEV;
76 }
77
78 static inline int drm_unbind_agp(struct agp_memory * handle)
79 {
80 return -ENODEV;
81 }
82
83 static inline struct agp_memory *drm_agp_bind_pages(struct drm_device *dev,
84 struct page **pages,
85 unsigned long num_pages,
86 uint32_t gtt_offset,
87 uint32_t type)
88 {
89 return NULL;
90 }
91
92 static inline struct drm_agp_head *drm_agp_init(struct drm_device *dev)
93 {
94 return NULL;
95 }
96
97 static inline void drm_legacy_agp_clear(struct drm_device *dev)
98 {
99 }
100
101 static inline int drm_agp_acquire(struct drm_device *dev)
102 {
103 return -ENODEV;
104 }
105
106 static inline int drm_agp_release(struct drm_device *dev)
107 {
108 return -ENODEV;
109 }
110
111 static inline int drm_agp_enable(struct drm_device *dev,
112 struct drm_agp_mode mode)
113 {
114 return -ENODEV;
115 }
116
117 static inline int drm_agp_info(struct drm_device *dev,
118 struct drm_agp_info *info)
119 {
120 return -ENODEV;
121 }
122
123 static inline int drm_agp_alloc(struct drm_device *dev,
124 struct drm_agp_buffer *request)
125 {
126 return -ENODEV;
127 }
128
129 static inline int drm_agp_free(struct drm_device *dev,
130 struct drm_agp_buffer *request)
131 {
132 return -ENODEV;
133 }
134
135 static inline int drm_agp_unbind(struct drm_device *dev,
136 struct drm_agp_binding *request)
137 {
138 return -ENODEV;
139 }
140
141 static inline int drm_agp_bind(struct drm_device *dev,
142 struct drm_agp_binding *request)
143 {
144 return -ENODEV;
145 }
146
147 #endif /* CONFIG_AGP */
148
149 #endif /* _DRM_AGPSUPPORT_H_ */
150
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