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* Tegra host1x GEM implementation
* Copyright (c) 2012-2013, NVIDIA Corporation.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
#ifndef __HOST1X_GEM_H
#define __HOST1X_GEM_H
#include <linux/host1x.h>
#include <drm/drm.h>
#include <drm/drmP.h>
#include <drm/drm_gem.h>
#define TEGRA_BO_BOTTOM_UP (1 << 0)
enum tegra_bo_tiling_mode {
struct tegra_bo_tiling {
enum tegra_bo_tiling_mode mode;
unsigned long value;
struct tegra_bo {
struct drm_gem_object gem;
struct host1x_bo base;
unsigned long flags;
struct sg_table *sgt;
dma_addr_t paddr;
void *vaddr;
struct drm_mm_node *mm;
unsigned long num_pages;
struct page **pages;
/* size of IOMMU mapping */
size_t size;
struct tegra_bo_tiling tiling;
static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
return container_of(gem, struct tegra_bo, gem);
static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo)
return container_of(bo, struct tegra_bo, base);
struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size,
unsigned long flags);
struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
struct drm_device *drm,
size_t size,
unsigned long flags,
u32 *handle);
void tegra_bo_free_object(struct drm_gem_object *gem);
int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
struct drm_mode_create_dumb *args);
int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
extern const struct vm_operations_struct tegra_bo_vm_ops;
struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
struct drm_gem_object *gem,
int flags);
struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
struct dma_buf *buf);