1 /* 2 * Tegra host1x GEM implementation 3 * 4 * Copyright (c) 2012-2013, NVIDIA Corporation. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #ifndef __HOST1X_GEM_H 12 #define __HOST1X_GEM_H 13 14 #include <linux/host1x.h> 15 16 #include <drm/drm.h> 17 #include <drm/drmP.h> 18 #include <drm/drm_gem.h> 19 20 #define TEGRA_BO_BOTTOM_UP (1 << 0) 21 22 enum tegra_bo_tiling_mode { 23 TEGRA_BO_TILING_MODE_PITCH, 24 TEGRA_BO_TILING_MODE_TILED, 25 TEGRA_BO_TILING_MODE_BLOCK, 26 }; 27 28 struct tegra_bo_tiling { 29 enum tegra_bo_tiling_mode mode; 30 unsigned long value; 31 }; 32 33 struct tegra_bo { 34 struct drm_gem_object gem; 35 struct host1x_bo base; 36 unsigned long flags; 37 struct sg_table *sgt; 38 dma_addr_t paddr; 39 void *vaddr; 40 41 struct drm_mm_node *mm; 42 unsigned long num_pages; 43 struct page **pages; 44 /* size of IOMMU mapping */ 45 size_t size; 46 47 struct tegra_bo_tiling tiling; 48 }; 49 50 static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem) 51 { 52 return container_of(gem, struct tegra_bo, gem); 53 } 54 55 struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size, 56 unsigned long flags); 57 struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file, 58 struct drm_device *drm, 59 size_t size, 60 unsigned long flags, 61 u32 *handle); 62 void tegra_bo_free_object(struct drm_gem_object *gem); 63 int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm, 64 struct drm_mode_create_dumb *args); 65 int tegra_bo_dumb_map_offset(struct drm_file *file, struct drm_device *drm, 66 u32 handle, u64 *offset); 67 68 int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma); 69 70 extern const struct vm_operations_struct tegra_bo_vm_ops; 71 72 struct dma_buf *tegra_gem_prime_export(struct drm_device *drm, 73 struct drm_gem_object *gem, 74 int flags); 75 struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm, 76 struct dma_buf *buf); 77 78 #endif 79