include/drm/drm_agpsupport.h

   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_ */