df06b759f2
When an IOMMU device is available on the platform bus, allocate an IOMMU domain and attach the display controllers to it. The display controllers can then scan out non-contiguous buffers by mapping them through the IOMMU. Signed-off-by: Thierry Reding <treding@nvidia.com>
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
/*
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* Tegra host1x GEM implementation
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*
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* Copyright (c) 2012-2013, NVIDIA Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __HOST1X_GEM_H
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#define __HOST1X_GEM_H
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#include <linux/host1x.h>
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#include <drm/drm.h>
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#include <drm/drmP.h>
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#include <drm/drm_gem.h>
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#define TEGRA_BO_BOTTOM_UP (1 << 0)
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enum tegra_bo_tiling_mode {
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TEGRA_BO_TILING_MODE_PITCH,
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TEGRA_BO_TILING_MODE_TILED,
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TEGRA_BO_TILING_MODE_BLOCK,
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};
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struct tegra_bo_tiling {
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enum tegra_bo_tiling_mode mode;
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unsigned long value;
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};
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struct tegra_bo {
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struct drm_gem_object gem;
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struct host1x_bo base;
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unsigned long flags;
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struct sg_table *sgt;
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dma_addr_t paddr;
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void *vaddr;
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struct drm_mm_node *mm;
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unsigned long num_pages;
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struct page **pages;
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/* size of IOMMU mapping */
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size_t size;
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struct tegra_bo_tiling tiling;
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};
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static inline struct tegra_bo *to_tegra_bo(struct drm_gem_object *gem)
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{
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return container_of(gem, struct tegra_bo, gem);
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}
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struct tegra_bo *tegra_bo_create(struct drm_device *drm, unsigned int size,
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unsigned long flags);
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struct tegra_bo *tegra_bo_create_with_handle(struct drm_file *file,
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struct drm_device *drm,
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unsigned int size,
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unsigned long flags,
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unsigned int *handle);
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void tegra_bo_free_object(struct drm_gem_object *gem);
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int tegra_bo_dumb_create(struct drm_file *file, struct drm_device *drm,
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struct drm_mode_create_dumb *args);
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int tegra_bo_dumb_map_offset(struct drm_file *file, struct drm_device *drm,
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uint32_t handle, uint64_t *offset);
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int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
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extern const struct vm_operations_struct tegra_bo_vm_ops;
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struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
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struct drm_gem_object *gem,
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int flags);
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struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
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struct dma_buf *buf);
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#endif
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