1 /* $NetBSD: drm_agpsupport.h,v 1.10 2022/07/19 22:24:34 riastradh Exp $ */
2
3 /* SPDX-License-Identifier: GPL-2.0 */
4 #ifndef _DRM_AGPSUPPORT_H_
5 #define _DRM_AGPSUPPORT_H_
6
7 #include <linux/agp_backend.h>
8 #include <linux/kernel.h>
9 #include <linux/list.h>
10 #include <linux/mm.h>
11 #include <linux/mutex.h>
12 #include <linux/types.h>
13 #include <uapi/drm/drm.h>
14
15 #ifdef __NetBSD__
16 #include <drm/drm_agp_netbsd.h>
17 #endif
18
19 struct drm_device;
20 struct drm_file;
21
22 struct drm_agp_hooks {
23 void (*agph_flush)(void);
24
25 struct drm_agp_head *
26 (*agph_init)(struct drm_device *);
27 void (*agph_clear)(struct drm_device *);
28 int (*agph_acquire)(struct drm_device *);
29 int (*agph_release)(struct drm_device *);
30 int (*agph_enable)(struct drm_device *, struct drm_agp_mode);
31 int (*agph_info)(struct drm_device *, struct drm_agp_info *);
32 int (*agph_alloc)(struct drm_device *, struct drm_agp_buffer *);
33 int (*agph_free)(struct drm_device *, struct drm_agp_buffer *);
34 int (*agph_bind)(struct drm_device *, struct drm_agp_binding *);
35 int (*agph_unbind)(struct drm_device *, struct drm_agp_binding *);
36
37 int (*agph_acquire_ioctl)(struct drm_device *, void *,
38 struct drm_file *);
39 int (*agph_release_ioctl)(struct drm_device *, void *,
40 struct drm_file *);
41 int (*agph_enable_ioctl)(struct drm_device *, void *,
42 struct drm_file *);
43 int (*agph_info_ioctl)(struct drm_device *, void *,
44 struct drm_file *);
45 int (*agph_alloc_ioctl)(struct drm_device *, void *,
46 struct drm_file *);
47 int (*agph_free_ioctl)(struct drm_device *, void *,
48 struct drm_file *);
49 int (*agph_bind_ioctl)(struct drm_device *, void *,
50 struct drm_file *);
51 int (*agph_unbind_ioctl)(struct drm_device *, void *,
52 struct drm_file *);
53 };
54
55 struct drm_agp_head {
56 const struct drm_agp_hooks *hooks;
57 struct agp_kern_info agp_info;
58 struct list_head memory;
59 unsigned long mode;
60 struct agp_bridge_data *bridge;
61 int enabled;
62 int acquired;
63 unsigned long base;
64 int agp_mtrr;
65 int cant_use_aperture;
66 unsigned long page_mask;
67 };
68
69 #if IS_ENABLED(CONFIG_AGP)
70
71 #ifdef __NetBSD__
72 static inline void drm_free_agp(struct agp_bridge_data *, struct agp_memory *, int);
73 static inline int drm_bind_agp(struct agp_bridge_data *, struct agp_memory *, unsigned);
74 static inline int drm_unbind_agp(struct agp_bridge_data *, struct agp_memory *);
75 #else
76 void drm_free_agp(struct agp_memory * handle, int pages);
77 int drm_bind_agp(struct agp_memory * handle, unsigned int start);
78 int drm_unbind_agp(struct agp_memory * handle);
79 #endif
80
81 struct drm_agp_head *drm_agp_init(struct drm_device *dev);
82 void drm_legacy_agp_clear(struct drm_device *dev);
83 int drm_agp_acquire(struct drm_device *dev);
84 int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
85 struct drm_file *file_priv);
86 int drm_agp_release(struct drm_device *dev);
87 int drm_agp_release_ioctl(struct drm_device *dev, void *data,
88 struct drm_file *file_priv);
89 int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
90 int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
91 struct drm_file *file_priv);
92 int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
93 int drm_agp_info_ioctl(struct drm_device *dev, void *data,
94 struct drm_file *file_priv);
95 int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
96 int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
97 struct drm_file *file_priv);
98 int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
99 int drm_agp_free_ioctl(struct drm_device *dev, void *data,
100 struct drm_file *file_priv);
101 int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
102 int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
103 struct drm_file *file_priv);
104 int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
105 int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
106 struct drm_file *file_priv);
107
108 #ifdef __NetBSD__
109 void drm_agp_flush(void);
110 void drm_agp_fini(struct drm_device *);
111 int drm_agp_register(const struct drm_agp_hooks *);
112 int drm_agp_deregister(const struct drm_agp_hooks *);
113 void drm_agp_hooks_init(void);
114 void drm_agp_hooks_fini(void);
115 int drmkms_agp_guarantee_initialized(void);
116 #endif
117
118 #else /* CONFIG_AGP */
119
120 #if !defined(__NetBSD__)
121
drm_free_agp(struct agp_memory * handle,int pages)122 static inline void drm_free_agp(struct agp_memory * handle, int pages)
123 {
124 }
125
drm_bind_agp(struct agp_memory * handle,unsigned int start)126 static inline int drm_bind_agp(struct agp_memory * handle, unsigned int start)
127 {
128 return -ENODEV;
129 }
130
drm_unbind_agp(struct agp_memory * handle)131 static inline int drm_unbind_agp(struct agp_memory * handle)
132 {
133 return -ENODEV;
134 }
135 #endif
136
drm_agp_init(struct drm_device * dev)137 static inline struct drm_agp_head *drm_agp_init(struct drm_device *dev)
138 {
139 return NULL;
140 }
141
drm_legacy_agp_clear(struct drm_device * dev)142 static inline void drm_legacy_agp_clear(struct drm_device *dev)
143 {
144 }
145
drm_agp_acquire(struct drm_device * dev)146 static inline int drm_agp_acquire(struct drm_device *dev)
147 {
148 return -ENODEV;
149 }
150
drm_agp_release(struct drm_device * dev)151 static inline int drm_agp_release(struct drm_device *dev)
152 {
153 return -ENODEV;
154 }
155
drm_agp_enable(struct drm_device * dev,struct drm_agp_mode mode)156 static inline int drm_agp_enable(struct drm_device *dev,
157 struct drm_agp_mode mode)
158 {
159 return -ENODEV;
160 }
161
drm_agp_info(struct drm_device * dev,struct drm_agp_info * info)162 static inline int drm_agp_info(struct drm_device *dev,
163 struct drm_agp_info *info)
164 {
165 return -ENODEV;
166 }
167
drm_agp_alloc(struct drm_device * dev,struct drm_agp_buffer * request)168 static inline int drm_agp_alloc(struct drm_device *dev,
169 struct drm_agp_buffer *request)
170 {
171 return -ENODEV;
172 }
173
drm_agp_free(struct drm_device * dev,struct drm_agp_buffer * request)174 static inline int drm_agp_free(struct drm_device *dev,
175 struct drm_agp_buffer *request)
176 {
177 return -ENODEV;
178 }
179
drm_agp_unbind(struct drm_device * dev,struct drm_agp_binding * request)180 static inline int drm_agp_unbind(struct drm_device *dev,
181 struct drm_agp_binding *request)
182 {
183 return -ENODEV;
184 }
185
drm_agp_bind(struct drm_device * dev,struct drm_agp_binding * request)186 static inline int drm_agp_bind(struct drm_device *dev,
187 struct drm_agp_binding *request)
188 {
189 return -ENODEV;
190 }
191
192 #endif /* CONFIG_AGP */
193
194 #endif /* _DRM_AGPSUPPORT_H_ */
195