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arch/tile: support MMIO-based readb/writeb etc.
authorChris Metcalf <cmetcalf@tilera.com>
Fri, 6 Apr 2012 17:52:07 +0000 (13:52 -0400)
committerChris Metcalf <cmetcalf@tilera.com>
Wed, 11 Jul 2012 20:04:53 +0000 (16:04 -0400)
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>

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