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r>treecaf41e782c5b52fbd45dc3ca4d8cb0e24180c122 parentd4b5781890b9329b9e7720f14d3eeb5661348535 (diff)
drm/tegra: Support kernel mappings with IOMMU
host1x command buffer patching requires that the buffer object can be mapped into kernel address space. However, the recent addition of IOMMU support did not account for this requirement. Therefore host1x engines cannot be used if IOMMU is enabled. This patch implements kmap, kunmap, mmap and munmap functions to host1x buffer objects. Signed-off-by: Arto Merilainen <amerilainen@nvidia.com> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
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-rw-r--r--drivers/gpu/drm/tegra/gem.c34
1 files changed, 31 insertions, 3 deletions
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c