drm/radeon: implement ring saving on reset v4

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Try to save whatever is on the rings when
we encounter an lockup.

v2: Fix spelling error. Free saved ring data if reset fails.
    Add documentation for the new functions.
v3: Some more spelling fixes
v4: It doesn't make sense to save anything if all fences
    are signaled

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Christian König 2012-07-09 11:52:44 +02:00

parent 45df68035c

commit 55d7c22192

3 changed files with 126 additions and 8 deletions

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4

drivers/gpu/drm/radeon/radeon.h

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58

drivers/gpu/drm/radeon/radeon_device.c

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82

drivers/gpu/drm/radeon/radeon_ring.c

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