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drm_agpsupport.h revision 1.5.16.1 
      1 /*	$NetBSD: drm_agpsupport.h,v 1.5.16.1 2018/09/06 06:56:35 pgoyette Exp $	*/
      2 
      3 #ifndef _DRM_AGPSUPPORT_H_
      4 #define _DRM_AGPSUPPORT_H_
      5 
      6 #include <linux/agp_backend.h>
      7 #include <linux/kernel.h>
      8 #include <linux/list.h>
      9 #include <linux/mm.h>
     10 #include <linux/mutex.h>
     11 #include <linux/types.h>
     12 #include <uapi/drm/drm.h>
     13 
     14 #ifdef __NetBSD__
     15 #include <drm/drm_agp_netbsd.h>
     16 #endif
     17 
     18 struct drm_device;
     19 struct drm_file;
     20 
     21 struct drm_agp_hooks {
     22 	void __pci_iomem *
     23 		(*agph_borrow)(struct drm_device *, unsigned, bus_size_t);
     24 	void	(*agph_flush)(void);
     25 
     26 	struct drm_agp_head *
     27 		(*agph_init)(struct drm_device *);
     28 	void	(*agph_clear)(struct drm_device *);
     29 	int	(*agph_acquire)(struct drm_device *);
     30 	int	(*agph_release)(struct drm_device *);
     31 	int	(*agph_enable)(struct drm_device *, struct drm_agp_mode);
     32 	int	(*agph_info)(struct drm_device *, struct drm_agp_info *);
     33 	int	(*agph_alloc)(struct drm_device *, struct drm_agp_buffer *);
     34 	int	(*agph_free)(struct drm_device *, struct drm_agp_buffer *);
     35 	int	(*agph_bind)(struct drm_device *, struct drm_agp_binding *);
     36 	int	(*agph_unbind)(struct drm_device *, struct drm_agp_binding *);
     37 
     38 	int	(*agph_acquire_ioctl)(struct drm_device *, void *,
     39 		    struct drm_file *);
     40 	int	(*agph_release_ioctl)(struct drm_device *, void *,
     41 		    struct drm_file *);
     42 	int	(*agph_enable_ioctl)(struct drm_device *, void *,
     43 		    struct drm_file *);
     44 	int	(*agph_info_ioctl)(struct drm_device *, void *,
     45 		    struct drm_file *);
     46 	int	(*agph_alloc_ioctl)(struct drm_device *, void *,
     47 		    struct drm_file *);
     48 	int	(*agph_free_ioctl)(struct drm_device *, void *,
     49 		    struct drm_file *);
     50 	int	(*agph_bind_ioctl)(struct drm_device *, void *,
     51 		    struct drm_file *);
     52 	int	(*agph_unbind_ioctl)(struct drm_device *, void *,
     53 		    struct drm_file *);
     54 };
     55 
     56 struct drm_agp_head {
     57 	const struct drm_agp_hooks *hooks;
     58 	struct agp_kern_info agp_info;
     59 	struct list_head memory;
     60 	unsigned long mode;
     61 	struct agp_bridge_data *bridge;
     62 	int enabled;
     63 	int acquired;
     64 	unsigned long base;
     65 	int agp_mtrr;
     66 	int cant_use_aperture;
     67 	unsigned long page_mask;
     68 };
     69 
     70 #if IS_ENABLED(CONFIG_AGP)
     71 
     72 #ifdef __NetBSD__
     73 static inline void drm_free_agp(struct agp_bridge_data *, struct agp_memory *, int);
     74 static inline int drm_bind_agp(struct agp_bridge_data *, struct agp_memory *, unsigned);
     75 static inline int drm_unbind_agp(struct agp_bridge_data *, struct agp_memory *);
     76 #else
     77 void drm_free_agp(struct agp_memory * handle, int pages);
     78 int drm_bind_agp(struct agp_memory * handle, unsigned int start);
     79 int drm_unbind_agp(struct agp_memory * handle);
     80 #endif
     81 struct agp_memory *drm_agp_bind_pages(struct drm_device *dev,
     82 				struct page **pages,
     83 				unsigned long num_pages,
     84 				uint32_t gtt_offset,
     85 				uint32_t type);
     86 
     87 struct drm_agp_head *drm_agp_init(struct drm_device *dev);
     88 void drm_agp_clear(struct drm_device *dev);
     89 int drm_agp_acquire(struct drm_device *dev);
     90 int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
     91 			  struct drm_file *file_priv);
     92 int drm_agp_release(struct drm_device *dev);
     93 int drm_agp_release_ioctl(struct drm_device *dev, void *data,
     94 			  struct drm_file *file_priv);
     95 int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
     96 int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
     97 			 struct drm_file *file_priv);
     98 int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
     99 int drm_agp_info_ioctl(struct drm_device *dev, void *data,
    100 		       struct drm_file *file_priv);
    101 int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
    102 int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
    103 			struct drm_file *file_priv);
    104 int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
    105 int drm_agp_free_ioctl(struct drm_device *dev, void *data,
    106 		       struct drm_file *file_priv);
    107 int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
    108 int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
    109 			 struct drm_file *file_priv);
    110 int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
    111 int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
    112 		       struct drm_file *file_priv);
    113 
    114 #ifdef __NetBSD__
    115 void __pci_iomem *drm_agp_borrow(struct drm_device *, unsigned, bus_size_t);
    116 void drm_agp_flush(void);
    117 void drm_agp_fini(struct drm_device *);
    118 int drm_agp_register(const struct drm_agp_hooks *);
    119 int drm_agp_deregister(const struct drm_agp_hooks *);
    120 void drm_agp_hooks_init(void);
    121 void drm_agp_hooks_fini(void);
    122 int drmkms_agp_guarantee_initialized(void);
    123 #endif
    124 
    125 #else /* CONFIG_AGP */
    126 
    127 #if !defined(__NetBSD__)
    128 
    129 static inline void drm_free_agp(struct agp_memory * handle, int pages)
    130 {
    131 }
    132 
    133 static inline int drm_bind_agp(struct agp_memory * handle, unsigned int start)
    134 {
    135 	return -ENODEV;
    136 }
    137 
    138 static inline int drm_unbind_agp(struct agp_memory * handle)
    139 {
    140 	return -ENODEV;
    141 }
    142 
    143 #endif
    144 
    145 static inline struct agp_memory *drm_agp_bind_pages(struct drm_device *dev,
    146 					      struct page **pages,
    147 					      unsigned long num_pages,
    148 					      uint32_t gtt_offset,
    149 					      uint32_t type)
    150 {
    151 	return NULL;
    152 }
    153 
    154 static inline struct drm_agp_head *drm_agp_init(struct drm_device *dev)
    155 {
    156 	return NULL;
    157 }
    158 
    159 static inline void drm_agp_clear(struct drm_device *dev)
    160 {
    161 }
    162 
    163 static inline int drm_agp_acquire(struct drm_device *dev)
    164 {
    165 	return -ENODEV;
    166 }
    167 
    168 static inline int drm_agp_release(struct drm_device *dev)
    169 {
    170 	return -ENODEV;
    171 }
    172 
    173 static inline int drm_agp_enable(struct drm_device *dev,
    174 				 struct drm_agp_mode mode)
    175 {
    176 	return -ENODEV;
    177 }
    178 
    179 static inline int drm_agp_info(struct drm_device *dev,
    180 			       struct drm_agp_info *info)
    181 {
    182 	return -ENODEV;
    183 }
    184 
    185 static inline int drm_agp_alloc(struct drm_device *dev,
    186 				struct drm_agp_buffer *request)
    187 {
    188 	return -ENODEV;
    189 }
    190 
    191 static inline int drm_agp_free(struct drm_device *dev,
    192 			       struct drm_agp_buffer *request)
    193 {
    194 	return -ENODEV;
    195 }
    196 
    197 static inline int drm_agp_unbind(struct drm_device *dev,
    198 				 struct drm_agp_binding *request)
    199 {
    200 	return -ENODEV;
    201 }
    202 
    203 static inline int drm_agp_bind(struct drm_device *dev,
    204 			       struct drm_agp_binding *request)
    205 {
    206 	return -ENODEV;
    207 }
    208 
    209 #endif /* CONFIG_AGP */
    210 
    211 #endif /* _DRM_AGPSUPPORT_H_ */
    212