drivers/gpu/drm/tegra/gem.h

   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 static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo)
  56 {
  57         return container_of(bo, struct tegra_bo, base);
  58 }
  59
  60 struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size,
  61                                  unsigned long flags);
  62 struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
  63                                              struct drm_device *drm,
  64                                              size_t size,
  65                                              unsigned long flags,
  66                                              u32 *handle);
  67 void tegra_bo_free_object(struct drm_gem_object *gem);
  68 int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
  69                          struct drm_mode_create_dumb *args);
  70
  71 extern const struct vm_operations_struct tegra_bo_vm_ops;
  72
  73 int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma);
  74 int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
  75
  76 struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
  77                                        struct drm_gem_object *gem,
  78                                        int flags);
  79 struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
  80                                               struct dma_buf *buf);
  81
  82 #endif