summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/tegra/gem.h
blob: c15fd99d6cb2b4be67983e4577611bfb157562ad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Tegra host1x GEM implementation
 *
 * Copyright (c) 2012-2013, NVIDIA Corporation.
 */

#ifndef __HOST1X_GEM_H
#define __HOST1X_GEM_H

#include <linux/host1x.h>

#include <drm/drm.h>
#include <drm/drm_gem.h>

#define TEGRA_BO_BOTTOM_UP (1 << 0)

enum tegra_bo_tiling_mode {
	TEGRA_BO_TILING_MODE_PITCH,
	TEGRA_BO_TILING_MODE_TILED,
	TEGRA_BO_TILING_MODE_BLOCK,
};

enum tegra_bo_sector_layout {
	TEGRA_BO_SECTOR_LAYOUT_TEGRA,
	TEGRA_BO_SECTOR_LAYOUT_GPU,
};

struct tegra_bo_tiling {
	enum tegra_bo_tiling_mode mode;
	unsigned long value;
	enum tegra_bo_sector_layout sector_layout;
};

struct tegra_bo {
	struct drm_gem_object gem;
	struct host1x_bo base;
	unsigned long flags;
	struct sg_table *sgt;
	dma_addr_t iova;
	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);

extern const struct vm_operations_struct tegra_bo_vm_ops;

int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma);
int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);

struct dma_buf *tegra_gem_prime_export(struct drm_gem_object *gem,
				       int flags);
struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
					      struct dma_buf *buf);

#endif