gem.h 1.9 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * Tegra host1x GEM implementation
  4. *
  5. * Copyright (c) 2012-2013, NVIDIA Corporation.
  6. */
  7. #ifndef __HOST1X_GEM_H
  8. #define __HOST1X_GEM_H
  9. #include <linux/host1x.h>
  10. #include <drm/drm.h>
  11. #include <drm/drm_gem.h>
  12. #define TEGRA_BO_BOTTOM_UP (1 << 0)
  13. enum tegra_bo_tiling_mode {
  14. TEGRA_BO_TILING_MODE_PITCH,
  15. TEGRA_BO_TILING_MODE_TILED,
  16. TEGRA_BO_TILING_MODE_BLOCK,
  17. };
  18. struct tegra_bo_tiling {
  19. enum tegra_bo_tiling_mode mode;
  20. unsigned long value;
  21. };
  22. struct tegra_bo {
  23. struct drm_gem_object gem;
  24. struct host1x_bo base;
  25. unsigned long flags;
  26. struct sg_table *sgt;
  27. dma_addr_t iova;
  28. void *vaddr;
  29. struct drm_mm_node *mm;
  30. unsigned long num_pages;
  31. struct page **pages;
  32. /* size of IOMMU mapping */
  33. size_t size;
  34. struct tegra_bo_tiling tiling;
  35. };
  36. static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
  37. {
  38. return container_of(gem, struct tegra_bo, gem);
  39. }
  40. static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo)
  41. {
  42. return container_of(bo, struct tegra_bo, base);
  43. }
  44. struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size,
  45. unsigned long flags);
  46. struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
  47. struct drm_device *drm,
  48. size_t size,
  49. unsigned long flags,
  50. u32 *handle);
  51. void tegra_bo_free_object(struct drm_gem_object *gem);
  52. int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
  53. struct drm_mode_create_dumb *args);
  54. extern const struct vm_operations_struct tegra_bo_vm_ops;
  55. int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma);
  56. int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
  57. struct dma_buf *tegra_gem_prime_export(struct drm_gem_object *gem,
  58. int flags);
  59. struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
  60. struct dma_buf *buf);
  61. #endif