1/*
 2 * Tegra host1x GEM implementation
 3 *
 4 * Copyright (c) 2012-2013, NVIDIA Corporation.
 5 *
 6 * This program is free software; you can redistribute it and/or modify
 7 * it under the terms of the GNU General Public License version 2 as
 8 * published by the Free Software Foundation.
 9 */
10
11#ifndef __HOST1X_GEM_H
12#define __HOST1X_GEM_H
13
14#include <linux/host1x.h>
15
16#include <drm/drm.h>
17#include <drm/drmP.h>
18#include <drm/drm_gem.h>
19
20#define TEGRA_BO_BOTTOM_UP (1 << 0)
21
22enum tegra_bo_tiling_mode {
23	TEGRA_BO_TILING_MODE_PITCH,
24	TEGRA_BO_TILING_MODE_TILED,
25	TEGRA_BO_TILING_MODE_BLOCK,
26};
27
28struct tegra_bo_tiling {
29	enum tegra_bo_tiling_mode mode;
30	unsigned long value;
31};
32
33struct tegra_bo {
34	struct drm_gem_object gem;
35	struct host1x_bo base;
36	unsigned long flags;
37	struct sg_table *sgt;
38	dma_addr_t paddr;
39	void *vaddr;
40
41	struct drm_mm_node *mm;
42	unsigned long num_pages;
43	struct page **pages;
44	/* size of IOMMU mapping */
45	size_t size;
46
47	struct tegra_bo_tiling tiling;
48};
49
50static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
51{
52	return container_of(gem, struct tegra_bo, gem);
53}
54
55static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo)
56{
57	return container_of(bo, struct tegra_bo, base);
58}
59
60struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size,
61				 unsigned long flags);
62struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
63					     struct drm_device *drm,
64					     size_t size,
65					     unsigned long flags,
66					     u32 *handle);
67void tegra_bo_free_object(struct drm_gem_object *gem);
68int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
69			 struct drm_mode_create_dumb *args);
70
71extern const struct vm_operations_struct tegra_bo_vm_ops;
72
73int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma);
74int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
75
76struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
77				       struct drm_gem_object *gem,
78				       int flags);
79struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
80					      struct dma_buf *buf);
81
82#endif