/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2012 Russell King
 */
#ifndef ARMADA_GEM_H
#define ARMADA_GEM_H

#include <drm/drm_gem.h>

/* GEM */
struct armada_gem_object {
        struct drm_gem_object   obj;
        void                    *addr;
        phys_addr_t             phys_addr;
        resource_size_t         dev_addr;
        bool                    mapped;
        struct drm_mm_node      *linear;        /* for linear backed */
        struct page             *page;          /* for page backed */
        struct sg_table         *sgt;           /* for imported */
        void                    (*update)(void *);
        void                    *update_data;
};

#define drm_to_armada_gem(o) container_of(o, struct armada_gem_object, obj)

void armada_gem_free_object(struct drm_gem_object *);
int armada_gem_linear_back(struct drm_device *, struct armada_gem_object *);
void *armada_gem_map_object(struct drm_device *, struct armada_gem_object *);
struct armada_gem_object *armada_gem_alloc_private_object(struct drm_device *,
        size_t);
int armada_gem_dumb_create(struct drm_file *, struct drm_device *,
        struct drm_mode_create_dumb *);
struct dma_buf *armada_gem_prime_export(struct drm_gem_object *obj, int flags);
struct drm_gem_object *armada_gem_prime_import(struct drm_device *,
        struct dma_buf *);
int armada_gem_map_import(struct armada_gem_object *);

static inline struct armada_gem_object *armada_gem_object_lookup(
        struct drm_file *dfile, unsigned handle)
{
        struct drm_gem_object *obj = drm_gem_object_lookup(dfile, handle);

        return obj ? drm_to_armada_gem(obj) : NULL;
}
#endif