linux-stable.git/include/linux/iommu.h, branch v5.13.2

iommu: Streamline registration interface

2021-04-16T15:20:45+00:00

Rather than have separate opaque setter functions that are easy to
overlook and lead to repetitive boilerplate in drivers, let's pass the
relevant initialisation parameters directly to iommu_device_register().

Acked-by: Will Deacon 
Signed-off-by: Robin Murphy 
Link: https://lore.kernel.org/r/ab001b87c533b6f4db71eb90db6f888953986c36.1617285386.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel

iommu: Statically set module owner

2021-04-16T15:19:04+00:00

It happens that the 3 drivers which first supported being modular are
also ones which play games with their pgsize_bitmap, so have non-const
iommu_ops where dynamically setting the owner manages to work out OK.
However, it's less than ideal to force that upon all drivers which want
to be modular - like the new sprd-iommu driver which now has a potential
bug in that regard - so let's just statically set the module owner and
let ops remain const wherever possible.

Reviewed-by: Christoph Hellwig 
Acked-by: Will Deacon 
Signed-off-by: Robin Murphy 
Link: https://lore.kernel.org/r/31423b99ff609c3d4b291c701a7a7a810d9ce8dc.1617285386.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel

Merge branches 'iommu/fixes', 'arm/mediatek', 'arm/smmu', 'arm/exynos', 'unisoc', 'x86/vt-d', 'x86/amd' and 'core' into next

2021-04-16T15:16:03+00:00

iommu: remove iommu_domain_{get,set}_attr

2021-04-07T08:56:53+00:00

Remove the now unused iommu attr infrastructure.

Signed-off-by: Christoph Hellwig 
Acked-by: Will Deacon 
Link: https://lore.kernel.org/r/20210401155256.298656-21-hch@lst.de
Signed-off-by: Joerg Roedel

iommu: remove DOMAIN_ATTR_IO_PGTABLE_CFG

2021-04-07T08:56:53+00:00

Use an explicit set_pgtable_quirks method instead that just passes
the actual quirk bitmask instead.

Signed-off-by: Christoph Hellwig 
Acked-by: Will Deacon 
Acked-by: Li Yang 
Link: https://lore.kernel.org/r/20210401155256.298656-20-hch@lst.de
Signed-off-by: Joerg Roedel

iommu: remove DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE

2021-04-07T08:56:53+00:00

Instead make the global iommu_dma_strict paramete in iommu.c canonical by
exporting helpers to get and set it and use those directly in the drivers.

This make sure that the iommu.strict parameter also works for the AMD and
Intel IOMMU drivers on x86.  As those default to lazy flushing a new
IOMMU_CMD_LINE_STRICT is used to turn the value into a tristate to
represent the default if not overriden by an explicit parameter.

[ported on top of the other iommu_attr changes and added a few small
 missing bits]

Signed-off-by: Robin Murphy .
Signed-off-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20210401155256.298656-19-hch@lst.de
Signed-off-by: Joerg Roedel

iommu: remove DOMAIN_ATTR_NESTING

2021-04-07T08:56:53+00:00

Use an explicit enable_nesting method instead.

Signed-off-by: Christoph Hellwig 
Acked-by: Will Deacon 
Acked-by: Li Yang 
Link: https://lore.kernel.org/r/20210401155256.298656-17-hch@lst.de
Signed-off-by: Joerg Roedel

iommu: remove DOMAIN_ATTR_GEOMETRY

2021-04-07T08:56:53+00:00

The geometry information can be trivially queried from the iommu_domain
struture.

Signed-off-by: Christoph Hellwig 
Acked-by: Will Deacon 
Acked-by: Li Yang 
Link: https://lore.kernel.org/r/20210401155256.298656-16-hch@lst.de
Signed-off-by: Joerg Roedel

iommu: remove DOMAIN_ATTR_PAGING

2021-04-07T08:56:53+00:00

DOMAIN_ATTR_PAGING is never used.

Signed-off-by: Christoph Hellwig 
Acked-by: Will Deacon 
Acked-by: Li Yang 
Link: https://lore.kernel.org/r/20210401155256.298656-15-hch@lst.de
Signed-off-by: Joerg Roedel

iommu/fsl_pamu: enable the liodn when attaching a device

2021-04-07T08:56:52+00:00

Instead of a separate call to enable all devices from the list, just
enable the liodn once the device is attached to the iommu domain.

This also remove the DOMAIN_ATTR_FSL_PAMU_ENABLE iommu_attr.

Signed-off-by: Christoph Hellwig 
Acked-by: Will Deacon 
Acked-by: Li Yang 
Link: https://lore.kernel.org/r/20210401155256.298656-11-hch@lst.de
Signed-off-by: Joerg Roedel