powerpc/powernv/npu: TCE Kill helpers cleanup

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NPU PHB TCE Kill register is exactly the same as in the rest of POWER8
so let's reuse the existing code for NPU. The only bit missing is
a helper to reset the entire TCE cache so this moves such a helper
from NPU code and renames it.

Since pnv_npu_tce_invalidate() does really invalidate the entire cache,
this uses pnv_pci_ioda2_tce_invalidate_entire() directly for NPU.
This adds an explicit comment for workaround for invalidating NPU TCE
cache.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

...

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Alexey Kardashevskiy 2016-04-29 18:55:18 +10:00 • committed by Michael Ellerman

parent bef9253f55

commit 0bbcdb437d

3 changed files with 25 additions and 52 deletions

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41

arch/powerpc/platforms/powernv/npu-dma.c

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29

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

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7

arch/powerpc/platforms/powernv/pci.h

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