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| author | Alexandre Courbot <acourbot@nvidia.com> | 2014-10-27 18:49:17 +0900 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2014-12-02 15:43:59 +1000 |
| commit | c3a0c771e582a74a344fa9dd805662222f896181 (patch) | |
| tree | 4374fe4b75818b907ab3c07bcdc9ec9e0e6325ed /drivers/gpu/drm/nouveau/nouveau_chan.c | |
| parent | c5d7ddf70a8445f711f5ab9ab92bd4f59f993262 (diff) | |
| download | op-kernel-dev-c3a0c771e582a74a344fa9dd805662222f896181.zip op-kernel-dev-c3a0c771e582a74a344fa9dd805662222f896181.tar.gz | |
drm/nouveau: implement explicitly coherent BOs
Allow nouveau_bo_new() to recognize the TTM_PL_FLAG_UNCACHED flag, which
means that we want the allocated BO to be perfectly coherent between the
CPU and GPU. This is useful on non-coherent architectures for which we
do not want to manually sync some rarely-accessed buffers: typically,
fences and pushbuffers.
A TTM BO allocated with the TTM_PL_FLAG_UNCACHED on a non-coherent
architecture will be populated using the DMA API, and accesses to it
performed using the coherent mapping performed by dma_alloc_coherent().
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_chan.c')
0 files changed, 0 insertions, 0 deletions
