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drm/nouveau/bar: expose interface to bar2 initialisation

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If we want to be able to hit the instmem fast-path in a few trickier cases,
we need to be more flexible with when we can initialise BAR2 access.

There's probably a decent case to be made for merging BAR/INSTMEM into BUS,
but that's something to ponder another day.

Flushes have been added after the write to bind the instance block,
as later commits will reveal the need for them.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2017-11-01 03:56:19 +10:00
commit 48fe02478a
8 changed files with 42 additions and 17 deletions
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