powerpc/powernv: Add support for indirect XSCOM via debugfs

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Indirect XSCOM addresses normally have the top bit set (of the 64-bit
address). This doesn't work via the normal debugfs interface, so we use
a different encoding, which we need to convert before calling OPAL.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Benjamin Herrenschmidt 2013-10-10 19:19:15 +11:00

parent cda13552d5

commit 80546ac513

1 changed files with 23 additions and 0 deletions

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arch/powerpc/platforms/powernv/opal-xscom.c

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