#ifndef _DRM_AGPSUPPORT_H_
#define _DRM_AGPSUPPORT_H_

#include <linux/agp_backend.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/mm.h>
#include <linux/mutex.h>
#include <linux/types.h>
#include <uapi/drm/drm.h>

#include <linux/kconfig.h>

#include <sys/agpio.h>
#include <dev/agp/agpvar.h>

struct drm_device;
struct drm_file;

#define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && \
                                              defined(MODULE)))

struct drm_agp_head {
        device_t        agpdev;
        struct agp_info agp_info;
        struct drm_agp_mem *memory;
        unsigned long mode;
        int enabled;
        int acquired;
        unsigned long base;
        int agp_mtrr;
        int cant_use_aperture;
        unsigned long page_mask;
};

#if __OS_HAS_AGP

void drm_free_agp(struct agp_memory * handle, int pages);
int drm_bind_agp(struct agp_memory * handle, unsigned int start);
int drm_unbind_agp(struct agp_memory * handle);
struct agp_memory *drm_agp_bind_pages(struct drm_device *dev,
                                struct page **pages,
                                unsigned long num_pages,
                                uint32_t gtt_offset,
                                uint32_t type);

struct drm_agp_head *drm_agp_init(struct drm_device *dev);
void drm_legacy_agp_clear(struct drm_device *dev);
int drm_agp_acquire(struct drm_device *dev);
int drm_agp_acquire_ioctl(struct drm_device *dev, void *data,
                          struct drm_file *file_priv);
int drm_agp_release(struct drm_device *dev);
int drm_agp_release_ioctl(struct drm_device *dev, void *data,
                          struct drm_file *file_priv);
int drm_agp_enable(struct drm_device *dev, struct drm_agp_mode mode);
int drm_agp_enable_ioctl(struct drm_device *dev, void *data,
                         struct drm_file *file_priv);
int drm_agp_info(struct drm_device *dev, struct drm_agp_info *info);
int drm_agp_info_ioctl(struct drm_device *dev, void *data,
                       struct drm_file *file_priv);
int drm_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request);
int drm_agp_alloc_ioctl(struct drm_device *dev, void *data,
                        struct drm_file *file_priv);
int drm_agp_free(struct drm_device *dev, struct drm_agp_buffer *request);
int drm_agp_free_ioctl(struct drm_device *dev, void *data,
                       struct drm_file *file_priv);
int drm_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request);
int drm_agp_unbind_ioctl(struct drm_device *dev, void *data,
                         struct drm_file *file_priv);
int drm_agp_bind(struct drm_device *dev, struct drm_agp_binding *request);
int drm_agp_bind_ioctl(struct drm_device *dev, void *data,
                       struct drm_file *file_priv);

#else /* CONFIG_AGP */

static inline void drm_free_agp(struct agp_memory * handle, int pages)
{
}

static inline int drm_bind_agp(struct agp_memory * handle, unsigned int start)
{
        return -ENODEV;
}

static inline int drm_unbind_agp(struct agp_memory * handle)
{
        return -ENODEV;
}

static inline struct agp_memory *drm_agp_bind_pages(struct drm_device *dev,
                                              struct page **pages,
                                              unsigned long num_pages,
                                              uint32_t gtt_offset,
                                              uint32_t type)
{
        return NULL;
}

static inline struct drm_agp_head *drm_agp_init(struct drm_device *dev)
{
        return NULL;
}

static inline void drm_legacy_agp_clear(struct drm_device *dev)
{
}

static inline int drm_agp_acquire(struct drm_device *dev)
{
        return -ENODEV;
}

static inline int drm_agp_release(struct drm_device *dev)
{
        return -ENODEV;
}

static inline int drm_agp_enable(struct drm_device *dev,
                                 struct drm_agp_mode mode)
{
        return -ENODEV;
}

static inline int drm_agp_info(struct drm_device *dev,
                               struct drm_agp_info *info)
{
        return -ENODEV;
}

static inline int drm_agp_alloc(struct drm_device *dev,
                                struct drm_agp_buffer *request)
{
        return -ENODEV;
}

static inline int drm_agp_free(struct drm_device *dev,
                               struct drm_agp_buffer *request)
{
        return -ENODEV;
}

static inline int drm_agp_unbind(struct drm_device *dev,
                                 struct drm_agp_binding *request)
{
        return -ENODEV;
}

static inline int drm_agp_bind(struct drm_device *dev,
                               struct drm_agp_binding *request)
{
        return -ENODEV;
}

#endif /* CONFIG_AGP */

#endif /* _DRM_AGPSUPPORT_H_ */