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 it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef __HOST1X_GEM_H
  20 #define __HOST1X_GEM_H
  21
  22 #include <linux/host1x.h>
  23
  24 #include <drm/drm.h>
  25 #include <drm/drmP.h>
  26
  27 #define TEGRA_BO_TILED     (1 << 0)
  28 #define TEGRA_BO_BOTTOM_UP (1 << 1)
  29
  30 struct tegra_bo {
  31         struct drm_gem_object gem;
  32         struct host1x_bo base;
  33         unsigned long flags;
  34         struct sg_table *sgt;
  35         dma_addr_t paddr;
  36         void *vaddr;
  37 };
  38
  39 static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
  40 {
  41         return container_of(gem, struct tegra_bo, gem);
  42 }
  43
  44 struct tegra_bo *tegra_bo_create(struct drm_device *drm, unsigned int size,
  45                                  unsigned long flags);
  46 struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
  47                                              struct drm_device *drm,
  48                                              unsigned int size,
  49                                              unsigned long flags,
  50                                              unsigned int *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 int tegra_bo_dumb_map_offset(struct drm_file *file, struct drm_device *drm,
  55                              uint32_t handle, uint64_t *offset);
  56
  57 int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
  58
  59 extern const struct vm_operations_struct tegra_bo_vm_ops;
  60
  61 struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
  62                                        struct drm_gem_object *gem,
  63                                        int flags);
  64 struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
  65                                               struct dma_buf *buf);
  66
  67 #endif