cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

gem.h (2112B)

      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