linux-nv-oot

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Dong Qiang 949b226f0e Smmu Support for MODS kernel module

Bug 200582229

This change will add smmu mapping/unmapping support for MODS
allocated memory buffer by using kernel smmu api dma_map_sg_attrs()
and dma_unmap_sg_attrs()
1. new IOCTL MODS_ESC_IOMMU_DMA_MAP_MEMORY and
MODS_ESC_IOMMU_DMA_UNMAP_MEMORY is added to do smmu mapping/unmapping
and get smmu mapped address for MODS allocated buffers;
2. a platform device and driver is added to match mods smmu sid in dtb,
the device is used to do smmu mapping/unampping; and mods smmu devices
are added in dtb to match with the driver with smmu config

Signed-off-by: Dong Qiang <carld@nvidia.com>
Change-Id: I47d4d1c43f14fc6b51f0c00cee127e1d51377f64
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2180897
Reviewed-by: Chris Dragan <kdragan@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit

2023-04-03 13:27:52 +00:00