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/drmP.h> 15 #include <drm/drm_gem.h> 16 17 #define TEGRA_BO_BOTTOM_UP (1 << 0) 18 19 enum tegra_bo_tiling_mode { 20 TEGRA_BO_TILING_MODE_PITCH, 21 TEGRA_BO_TILING_MODE_TILED, 22 TEGRA_BO_TILING_MODE_BLOCK, 23 }; 24 25 struct tegra_bo_tiling { 26 enum tegra_bo_tiling_mode mode; 27 unsigned long value; 28 }; 29 30 struct tegra_bo { 31 struct drm_gem_object gem; 32 struct host1x_bo base; 33 unsigned long flags; 34 struct sg_table *sgt; 35 dma_addr_t paddr; 36 void *vaddr; 37 38 struct drm_mm_node *mm; 39 unsigned long num_pages; 40 struct page **pages; 41 /* size of IOMMU mapping */ 42 size_t size; 43 44 struct tegra_bo_tiling tiling; 45 }; 46 47 static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem) 48 { 49 return container_of(gem, struct tegra_bo, gem); 50 } 51 52 static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo) 53 { 54 return container_of(bo, struct tegra_bo, base); 55 } 56 57 struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size, 58 unsigned long flags); 59 struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file, 60 struct drm_device *drm, 61 size_t size, 62 unsigned long flags, 63 u32 *handle); 64 void tegra_bo_free_object(struct drm_gem_object *gem); 65 int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm, 66 struct drm_mode_create_dumb *args); 67 68 extern const struct vm_operations_struct tegra_bo_vm_ops; 69 70 int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma); 71 int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma); 72 73 struct dma_buf *tegra_gem_prime_export(struct drm_device *drm, 74 struct drm_gem_object *gem, 75 int flags); 76 struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm, 77 struct dma_buf *buf); 78 79 #endif 80