Andrew Lewycky d5754ab8f9 drm/radeon: use a single doorbell for cik kms compute
A single doorbell page is plenty for cik kms compute.
Use a single page and manage doorbell allocation by
individual doorbells rather than pages.  Identify
doorbells by their index rather than byte offset.

Signed-off-by: Andrew Lewycky <Andrew.Lewycky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-11-15 15:56:22 -05:00
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