LXR linux/drivers/gpu/drm/tegra/gem.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Tegra host1x GEM implementation
   4 *
   5 * Copyright (c) 2012-2013, NVIDIA Corporation.
   6 */
   7
   8#ifndef __HOST1X_GEM_H
   9#define __HOST1X_GEM_H
  10
  11#include <linux/host1x.h>
  12
  13#include <drm/drm.h>
  14#include <drm/drm_gem.h>
  15
  16#define TEGRA_BO_BOTTOM_UP (1 << 0)
  17
  18enum tegra_bo_tiling_mode {
  19        TEGRA_BO_TILING_MODE_PITCH,
  20        TEGRA_BO_TILING_MODE_TILED,
  21        TEGRA_BO_TILING_MODE_BLOCK,
  22};
  23
  24enum tegra_bo_sector_layout {
  25        TEGRA_BO_SECTOR_LAYOUT_TEGRA,
  26        TEGRA_BO_SECTOR_LAYOUT_GPU,
  27};
  28
  29struct tegra_bo_tiling {
  30        enum tegra_bo_tiling_mode mode;
  31        unsigned long value;
  32        enum tegra_bo_sector_layout sector_layout;
  33};
  34
  35struct tegra_bo {
  36        struct drm_gem_object gem;
  37        struct host1x_bo base;
  38        unsigned long flags;
  39        struct sg_table *sgt;
  40        dma_addr_t iova;
  41        void *vaddr;
  42
  43        struct drm_mm_node *mm;
  44        unsigned long num_pages;
  45        struct page **pages;
  46        /* size of IOMMU mapping */
  47        size_t size;
  48
  49        struct tegra_bo_tiling tiling;
  50};
  51
  52static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
  53{
  54        return container_of(gem, struct tegra_bo, gem);
  55}
  56
  57static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo)
  58{
  59        return container_of(bo, struct tegra_bo, base);
  60}
  61
  62struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size,
  63                                 unsigned long flags);
  64struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
  65                                             struct drm_device *drm,
  66                                             size_t size,
  67                                             unsigned long flags,
  68                                             u32 *handle);
  69void tegra_bo_free_object(struct drm_gem_object *gem);
  70int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
  71                         struct drm_mode_create_dumb *args);
  72
  73extern const struct vm_operations_struct tegra_bo_vm_ops;
  74
  75int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma);
  76int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
  77
  78struct dma_buf *tegra_gem_prime_export(struct drm_gem_object *gem,
  79                                       int flags);
  80struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
  81                                              struct dma_buf *buf);
  82
  83struct host1x_bo *tegra_gem_lookup(struct drm_file *file, u32 handle);
  84
  85#endif
  86