powerpc/powernv/ioda1: Introduce PNV_IODA1_DMA32_SEGSIZE

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Currently, there is one macro (TCE32_TABLE_SIZE) representing the
TCE table size for one DMA32 segment. The constant representing
the DMA32 segment size (1 << 28) is still used in the code.

This defines PNV_IODA1_DMA32_SEGSIZE representing one DMA32
segment size. the TCE table size can be calcualted when the page
has fixed 4KB size. So all the related calculation depends on one
macro (PNV_IODA1_DMA32_SEGSIZE). No logical changes introduced.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-By: Alistair Popple <alistair@popple.id.au>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Gavin Shan 2016-05-03 15:41:33 +10:00 • committed by Michael Ellerman

parent b30d936f6f

commit acce971c0e

1 changed files with 18 additions and 13 deletions

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arch/powerpc/platforms/powernv/pci-ioda.c

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