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
18enum tegra_bo_tiling_mode {
19	TEGRA_BO_TILING_MODE_PITCH,
20	TEGRA_BO_TILING_MODE_TILED,
21	TEGRA_BO_TILING_MODE_BLOCK,
22};
23
24struct tegra_bo_tiling {
25	enum tegra_bo_tiling_mode mode;
26	unsigned long value;
27};
28
29struct tegra_bo {
30	struct drm_gem_object gem;
31	struct host1x_bo base;
32	unsigned long flags;
33	struct sg_table *sgt;
34	dma_addr_t iova;
35	void *vaddr;
36
37	struct drm_mm_node *mm;
38	unsigned long num_pages;
39	struct page **pages;
40	/* size of IOMMU mapping */
41	size_t size;
42
43	struct tegra_bo_tiling tiling;
44};
45
46static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
47{
48	return container_of(gem, struct tegra_bo, gem);
49}
50
51static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo)
52{
53	return container_of(bo, struct tegra_bo, base);
54}
55
56struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size,
57				 unsigned long flags);
58struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
59					     struct drm_device *drm,
60					     size_t size,
61					     unsigned long flags,
62					     u32 *handle);
63void tegra_bo_free_object(struct drm_gem_object *gem);
64int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
65			 struct drm_mode_create_dumb *args);
66
67extern const struct vm_operations_struct tegra_bo_vm_ops;
68
69int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma);
70int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
71
72struct dma_buf *tegra_gem_prime_export(struct drm_gem_object *gem,
73				       int flags);
74struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
75					      struct dma_buf *buf);
76
77#endif