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