drm_prime.h 4.0 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112
  1. /*
  2. * Copyright © 2012 Red Hat
  3. * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
  4. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  5. * Copyright (c) 2009-2010, Code Aurora Forum.
  6. *
  7. * Permission is hereby granted, free of charge, to any person obtaining a
  8. * copy of this software and associated documentation files (the "Software"),
  9. * to deal in the Software without restriction, including without limitation
  10. * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11. * and/or sell copies of the Software, and to permit persons to whom the
  12. * Software is furnished to do so, subject to the following conditions:
  13. *
  14. * The above copyright notice and this permission notice (including the next
  15. * paragraph) shall be included in all copies or substantial portions of the
  16. * Software.
  17. *
  18. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21. * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23. * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  24. * IN THE SOFTWARE.
  25. *
  26. * Authors:
  27. * Dave Airlie <airlied@redhat.com>
  28. * Rob Clark <rob.clark@linaro.org>
  29. *
  30. */
  31. #ifndef __DRM_PRIME_H__
  32. #define __DRM_PRIME_H__
  33. #include <linux/mutex.h>
  34. #include <linux/rbtree.h>
  35. #include <linux/scatterlist.h>
  36. /**
  37. * struct drm_prime_file_private - per-file tracking for PRIME
  38. *
  39. * This just contains the internal &struct dma_buf and handle caches for each
  40. * &struct drm_file used by the PRIME core code.
  41. */
  42. struct drm_prime_file_private {
  43. /* private: */
  44. struct mutex lock;
  45. struct rb_root dmabufs;
  46. struct rb_root handles;
  47. };
  48. struct device;
  49. struct dma_buf_export_info;
  50. struct dma_buf;
  51. struct dma_buf_attachment;
  52. enum dma_data_direction;
  53. struct drm_device;
  54. struct drm_gem_object;
  55. struct drm_file;
  56. /* core prime functions */
  57. struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev,
  58. struct dma_buf_export_info *exp_info);
  59. void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
  60. int drm_gem_prime_fd_to_handle(struct drm_device *dev,
  61. struct drm_file *file_priv, int prime_fd, uint32_t *handle);
  62. int drm_gem_prime_handle_to_fd(struct drm_device *dev,
  63. struct drm_file *file_priv, uint32_t handle, uint32_t flags,
  64. int *prime_fd);
  65. /* helper functions for exporting */
  66. int drm_gem_map_attach(struct dma_buf *dma_buf,
  67. struct dma_buf_attachment *attach);
  68. void drm_gem_map_detach(struct dma_buf *dma_buf,
  69. struct dma_buf_attachment *attach);
  70. struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,
  71. enum dma_data_direction dir);
  72. void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,
  73. struct sg_table *sgt,
  74. enum dma_data_direction dir);
  75. void *drm_gem_dmabuf_vmap(struct dma_buf *dma_buf);
  76. void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr);
  77. int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
  78. int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma);
  79. struct sg_table *drm_prime_pages_to_sg(struct drm_device *dev,
  80. struct page **pages, unsigned int nr_pages);
  81. struct dma_buf *drm_gem_prime_export(struct drm_gem_object *obj,
  82. int flags);
  83. unsigned long drm_prime_get_contiguous_size(struct sg_table *sgt);
  84. /* helper functions for importing */
  85. struct drm_gem_object *drm_gem_prime_import_dev(struct drm_device *dev,
  86. struct dma_buf *dma_buf,
  87. struct device *attach_dev);
  88. struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
  89. struct dma_buf *dma_buf);
  90. void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
  91. int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
  92. dma_addr_t *addrs, int max_pages);
  93. int drm_gem_dmabuf_get_uuid(struct dma_buf *dma_buf, uuid_t *uuid);
  94. #endif /* __DRM_PRIME_H__ */