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 struct tegra_bo_tiling { 25 enum tegra_bo_tiling_mode mode; 26 unsigned long value; 27 }; 28 29 struct 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 46 static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem) 47 { 48 return container_of(gem, struct tegra_bo, gem); 49 } 50 51 static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo) 52 { 53 return container_of(bo, struct tegra_bo, base); 54 } 55 56 struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size, 57 unsigned long flags); 58 struct 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); 63 void tegra_bo_free_object(struct drm_gem_object *gem); 64 int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm, 65 struct drm_mode_create_dumb *args); 66 67 extern const struct vm_operations_struct tegra_bo_vm_ops; 68 69 int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma); 70 int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma); 71 72 struct dma_buf *tegra_gem_prime_export(struct drm_gem_object *gem, 73 int flags); 74 struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm, 75 struct dma_buf *buf); 76 77 #endif 78