Chris Metcalf 44e5696710 arch/tile: support MMIO-based readb/writeb etc. ...

Add support for MMIO read/write on tilegx to support GXIO IORPC access.
Similar to the asm-generic version, but we include memory fences on
the writes to be conservative.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

2012-07-11 16:04:53 -04:00

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