iommu/io-pgtable-arm-v7s: Extend to support PA[33:32] for MediaTek

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MediaTek extend the arm v7s descriptor to support up to 34 bits PA where
the bit32 and bit33 are encoded in the bit9 and bit4 of the PTE
respectively. Meanwhile the iova still is 32bits.

Regarding whether the pagetable address could be over 4GB, the mt8183
support it while the previous mt8173 don't, thus keep it as is.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Yong Wu 2019-08-24 11:01:54 +08:00 • committed by Joerg Roedel

parent 73d50811bc

commit 4c019de653

2 changed files with 36 additions and 11 deletions

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40

drivers/iommu/io-pgtable-arm-v7s.c

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7

include/linux/io-pgtable.h

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