LXR linux/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
  22enum tegra_bo_tiling_mode {
  23        TEGRA_BO_TILING_MODE_PITCH,
  24        TEGRA_BO_TILING_MODE_TILED,
  25        TEGRA_BO_TILING_MODE_BLOCK,
  26};
  27
  28struct tegra_bo_tiling {
  29        enum tegra_bo_tiling_mode mode;
  30        unsigned long value;
  31};
  32
  33struct 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
  50static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
  51{
  52        return container_of(gem, struct tegra_bo, gem);
  53}
  54
  55struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size,
  56                                 unsigned long flags);
  57struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
  58                                             struct drm_device *drm,
  59                                             size_t size,
  60                                             unsigned long flags,
  61                                             u32 *handle);
  62void tegra_bo_free_object(struct drm_gem_object *gem);
  63int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
  64                         struct drm_mode_create_dumb *args);
  65int tegra_bo_dumb_map_offset(struct drm_file *file, struct drm_device *drm,
  66                             u32 handle, u64 *offset);
  67
  68int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
  69
  70extern const struct vm_operations_struct tegra_bo_vm_ops;
  71
  72struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
  73                                       struct drm_gem_object *gem,
  74                                       int flags);
  75struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
  76                                              struct dma_buf *buf);
  77
  78#endif
  79