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 19 #define TEGRA_BO_BOTTOM_UP (1 << 0) 20 21 enum tegra_bo_tiling_mode { 22 TEGRA_BO_TILING_MODE_PITCH, 23 TEGRA_BO_TILING_MODE_TILED, 24 TEGRA_BO_TILING_MODE_BLOCK, 25 }; 26 27 struct tegra_bo_tiling { 28 enum tegra_bo_tiling_mode mode; 29 unsigned long value; 30 }; 31 32 struct tegra_bo { 33 struct drm_gem_object gem; 34 struct host1x_bo base; 35 unsigned long flags; 36 struct sg_table *sgt; 37 dma_addr_t paddr; 38 void *vaddr; 39 40 struct tegra_bo_tiling tiling; 41 }; 42 43 static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem) 44 { 45 return container_of(gem, struct tegra_bo, gem); 46 } 47 48 struct tegra_bo *tegra_bo_create(struct drm_device *drm, unsigned int size, 49 unsigned long flags); 50 struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file, 51 struct drm_device *drm, 52 unsigned int size, 53 unsigned long flags, 54 unsigned int *handle); 55 void tegra_bo_free_object(struct drm_gem_object *gem); 56 int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm, 57 struct drm_mode_create_dumb *args); 58 int tegra_bo_dumb_map_offset(struct drm_file *file, struct drm_device *drm, 59 uint32_t handle, uint64_t *offset); 60 61 int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma); 62 63 extern const struct vm_operations_struct tegra_bo_vm_ops; 64 65 struct dma_buf *tegra_gem_prime_export(struct drm_device *drm, 66 struct drm_gem_object *gem, 67 int flags); 68 struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm, 69 struct dma_buf *buf); 70 71 #endif 72