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/drmP.h>
  15#include <drm/drm_gem.h>
  16
  17#define TEGRA_BO_BOTTOM_UP (1 << 0)
  18
  19enum tegra_bo_tiling_mode {
  20        TEGRA_BO_TILING_MODE_PITCH,
  21        TEGRA_BO_TILING_MODE_TILED,
  22        TEGRA_BO_TILING_MODE_BLOCK,
  23};
  24
  25struct tegra_bo_tiling {
  26        enum tegra_bo_tiling_mode mode;
  27        unsigned long value;
  28};
  29
  30struct 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        struct drm_mm_node *mm;
  39        unsigned long num_pages;
  40        struct page **pages;
  41        /* size of IOMMU mapping */
  42        size_t size;
  43
  44        struct tegra_bo_tiling tiling;
  45};
  46
  47static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
  48{
  49        return container_of(gem, struct tegra_bo, gem);
  50}
  51
  52static inline struct tegra_bo *host1x_to_tegra_bo(struct host1x_bo *bo)
  53{
  54        return container_of(bo, struct tegra_bo, base);
  55}
  56
  57struct tegra_bo *tegra_bo_create(struct drm_device *drm, size_t size,
  58                                 unsigned long flags);
  59struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
  60                                             struct drm_device *drm,
  61                                             size_t size,
  62                                             unsigned long flags,
  63                                             u32 *handle);
  64void tegra_bo_free_object(struct drm_gem_object *gem);
  65int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
  66                         struct drm_mode_create_dumb *args);
  67
  68extern const struct vm_operations_struct tegra_bo_vm_ops;
  69
  70int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma);
  71int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
  72
  73struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
  74                                       struct drm_gem_object *gem,
  75                                       int flags);
  76struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
  77                                              struct dma_buf *buf);
  78
  79#endif
  80