1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * Tegra host1x GEM implementation |
4 | * |
5 | * Copyright (c) 2012-2013, NVIDIA Corporation. |
6 | */ |
7 | |
8 | #ifndef __HOST1X_GEM_H |
9 | #define __HOST1X_GEM_H |
10 | |
11 | #include <linux/host1x.h> |
12 | |
13 | #include <drm/drm.h> |
14 | #include <drm/drm_gem.h> |
15 | |
16 | #define TEGRA_BO_BOTTOM_UP (1 << 0) |
17 | |
18 | enum tegra_bo_tiling_mode { |
19 | TEGRA_BO_TILING_MODE_PITCH, |
20 | TEGRA_BO_TILING_MODE_TILED, |
21 | TEGRA_BO_TILING_MODE_BLOCK, |
22 | }; |
23 | |
24 | enum tegra_bo_sector_layout { |
25 | TEGRA_BO_SECTOR_LAYOUT_TEGRA, |
26 | TEGRA_BO_SECTOR_LAYOUT_GPU, |
27 | }; |
28 | |
29 | struct tegra_bo_tiling { |
30 | enum tegra_bo_tiling_mode mode; |
31 | unsigned long value; |
32 | enum tegra_bo_sector_layout sector_layout; |
33 | }; |
34 | |
35 | struct tegra_bo { |
36 | struct drm_gem_object gem; |
37 | struct host1x_bo base; |
38 | unsigned long flags; |
39 | struct sg_table *sgt; |
40 | dma_addr_t iova; |
41 | void *vaddr; |
42 | |
43 | struct drm_mm_node *mm; |
44 | unsigned long num_pages; |
45 | struct page **pages; |
46 | /* size of IOMMU mapping */ |
47 | size_t size; |
48 | |
49 | struct tegra_bo_tiling tiling; |
50 | }; |
51 | |
52 | static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem) |
53 | { |
54 | return container_of(gem, struct tegra_bo, gem); |
55 | } |
56 | |
57 | static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo) |
58 | { |
59 | return container_of(bo, struct tegra_bo, base); |
60 | } |
61 | |
62 | struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size, |
63 | unsigned long flags); |
64 | struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file, |
65 | struct drm_device *drm, |
66 | size_t size, |
67 | unsigned long flags, |
68 | u32 *handle); |
69 | void tegra_bo_free_object(struct drm_gem_object *gem); |
70 | int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm, |
71 | struct drm_mode_create_dumb *args); |
72 | |
73 | extern const struct vm_operations_struct tegra_bo_vm_ops; |
74 | |
75 | int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma); |
76 | int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma); |
77 | |
78 | struct dma_buf *tegra_gem_prime_export(struct drm_gem_object *gem, |
79 | int flags); |
80 | struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm, |
81 | struct dma_buf *buf); |
82 | |
83 | struct host1x_bo *tegra_gem_lookup(struct drm_file *file, u32 handle); |
84 | |
85 | #endif |
86 | |