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...*) > +{ > +} > + > +static inline void > +nouveau_bo_sync_for_device(struct nouveau_bo *) > +{ > +} > +#endif > + > + There's a gratuituous blank line here. > diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c > index c90c0dc0afe8..b7e42fdc9634 100644 > --- a/drivers/gpu/drm/nouveau/nouveau_gem.c > +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c > @@ -897,7 +897,13 @@ nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, > ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait); > spin_unlock(&nv...

.... Signed-off-by: Maarten Lankhorst <maarten.lankhorst at canonical.com> --- drivers/gpu/drm/nouveau/nouveau_gem.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index c90c0dc0afe8..6e1c58a880fe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -886,17 +886,31 @@ nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, struct drm_gem_object *gem; struct nouveau_bo *nvbo; bool no_wait = !!(req->flags & NOUVEAU_...

...veau_bo_sync_for_device(struct nouveau_bo *) +{ +} +#endif + + /* TODO: submit equivalent to TTM generic API upstream? */ static inline void __iomem * nvbo_kmap_obj_iovirtual(struct nouveau_bo *nvbo) diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index c90c0dc0afe8..b7e42fdc9634 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -897,7 +897,13 @@ nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, ret = ttm_bo_wait(&nvbo->bo, true, true, no_wait); spin_unlock(&nvbo->bo.bdev->fence_...

...+void nouveau_bo_sync_for_device(struct nouveau_bo *nvbo); +void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo); struct nouveau_vma * nouveau_bo_vma_find(struct nouveau_bo *, struct nouveau_vm *); diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index c90c0dc0afe8..08829a720891 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -896,6 +896,7 @@ nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, spin_lock(&nvbo->bo.bdev->fence_lock); ret = ttm_bo_wait(&nvbo->bo, true, true, no_wai...

This small series introduces TTM helper functions as well as Nouveau hooks that are needed to ensure buffer coherency on ARM. Most of this series is a forward-port of some patches Lucas Stach sent last year and that are also needed for Nouveau GK20A support: http://lists.freedesktop.org/archives/nouveau/2013-August/014026.html Another patch takes care of flushing the CPU write-buffer when

...ce(struct nouveau_bo *nvbo); > +void nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo); > > struct nouveau_vma * > nouveau_bo_vma_find(struct nouveau_bo *, struct nouveau_vm *); > diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c > index c90c0dc0afe8..08829a720891 100644 > --- a/drivers/gpu/drm/nouveau/nouveau_gem.c > +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c > @@ -896,6 +896,7 @@ nouveau_gem_ioctl_cpu_prep(struct drm_device *dev, void *data, > spin_lock(&nvbo->bo.bdev->fence_lock); > ret = ttm_bo_wait(&nvbo-&...

Another revision of this patchset critical for GK20A to operate. Previous attempts were exclusively using either TTM's regular page allocator or the DMA API one. Both have their advantages and drawbacks: the page allocator is fast but requires explicit synchronization on non-coherent architectures, whereas the DMA allocator always returns coherent memory, but is also slower, creates a

For this v2 I have fixed the patches that are non-controversial (all Lucas' :)) and am resubmitting them in the hope that they will get merged. This will just leave the issue of Nouveau system-memory buffers mapping to be solved. This issue is quite complex, so let me summarize the situation and the data I have at hand. ARM caching is like a quantum world where Murphy's law constantly

This series depends on the previously posted reservation api patches. 2 of them are not yet in for-next-fences branch of git://git.linaro.org/people/sumit.semwal/linux-3.x.git The missing patches are still in my vmwgfx_wip branch at git://people.freedesktop.org/~mlankhorst/linux All ttm drivers are converted to the fence api, fence_lock is removed and rcu is used in its place. qxl is the first

This series applies on top of the driver-core-next branch of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git Before converting ttm to the new fence interface I had to fix some drivers to require a reservation before poking with fence_obj. After flipping the switch RCU becomes available instead, and the extra reservations can be dropped again. :-) I've done at least basic