iommu/msm: Implement an IDENTITY domain

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What msm does during msm_iommu_set_platform_dma() is actually putting the
iommu into identity mode.

Move to the new core support for ARM_DMA_USE_IOMMU by defining
ops->identity_domain.

This driver does not support IOMMU_DOMAIN_DMA, however it cannot be
compiled on ARM64 either. Most likely it is fine to support dma-iommu.c

Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/14-v8-81230027b2fa+9d-iommu_all_defdom_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

...

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Jason Gunthorpe 2023-09-13 10:43:47 -03:00 • committed by Joerg Roedel

parent bbe39b7633

commit 78fc30b4bb

1 changed files with 19 additions and 4 deletions

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drivers/iommu/msm_iommu.c

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