powerps/pseries/dma: Add support for 2M IOMMU page size

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The upcoming PAPR spec adds a 2M page size, bit 23 right after 16G page
size in the "ibm,query-pe-dma-window" call.

This adds support for the new page size. Since the new page size is out
of sorted order, this changes the loop to not assume that shift[] is
sorted.

This has now been tested and is known to work on a pre-release version
of phyp.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Leonardo Bras <leobras.c@gmail.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211006044735.1114669-1-aik@ozlabs.ru

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Alexey Kardashevskiy 2021-10-06 15:47:35 +11:00 • committed by Michael Ellerman

parent e4e737bb5c

commit 3872731187

1 changed files with 5 additions and 5 deletions

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arch/powerpc/platforms/pseries/iommu.c

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