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drm/tegra: Add PRIME support

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Implement very basic PRIME support. This currently only works with
buffers that are contiguous in memory and will refuse to import any
physically non-contiguous buffers.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding
2013-12-12 10:00:43 +01:00
parent 72d3028615
commit 3800391db1
3 changed files with 193 additions and 2 deletions
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7
drivers/gpu/drm/tegra/gem.h
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@@ -31,6 +31,7 @@ struct tegra_bo {
struct drm_gem_object gem;
struct host1x_bo base;
unsigned long flags;
struct sg_table *sgt;
dma_addr_t paddr;
void *vaddr;
};
@@ -57,4 +58,10 @@ int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma);
extern const struct vm_operations_struct tegra_bo_vm_ops;
struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
struct drm_gem_object *gem,
int flags);
struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
struct dma_buf *buf);
#endif