diff options
| author | Chris Wilson | 2012-07-10 11:27:08 +0200 |
|---|---|---|
| committer | Daniel Vetter | 2012-07-26 12:56:25 +0200 |
| commit | e6994aeedcee4f71998d89d2c10c5baa419ebeac (patch) | |
| tree | 8b298417e51e2fc2dd2e191b26d504f648ffd91b /drivers/gpu/drm/i915/i915_drv.h | |
| parent | drm/i915: Segregate memory domains in the GTT using coloring (diff) | |
| download | kernel-qcow2-linux-e6994aeedcee4f71998d89d2c10c5baa419ebeac.tar.gz kernel-qcow2-linux-e6994aeedcee4f71998d89d2c10c5baa419ebeac.tar.xz kernel-qcow2-linux-e6994aeedcee4f71998d89d2c10c5baa419ebeac.zip | |
drm/i915: Export ability of changing cache levels to userspace
By selecting the cache level (essentially whether or not the CPU snoops
any updates to the bo, and on more recent machines whether it resides
inside the CPU's last-level-cache) a userspace driver is able to then
manage all of its memory within buffer objects, if it so desires. This
enables the userspace driver to accelerate uploads and more importantly
downloads from the GPU and to able to mix CPU and GPU rendering/activity
efficiently.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Added code comment about where we plan to stuff platform
specific cacheing control bits in the ioctl struct.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 270b31cabc1a..0dc89a42a80a 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -848,9 +848,9 @@ enum hdmi_force_audio { }; enum i915_cache_level { - I915_CACHE_NONE, + I915_CACHE_NONE = 0, I915_CACHE_LLC, - I915_CACHE_LLC_MLC, /* gen6+ */ + I915_CACHE_LLC_MLC, /* gen6+, in docs at least! */ }; struct drm_i915_gem_object { @@ -1238,6 +1238,10 @@ int i915_gem_unpin_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int i915_gem_busy_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +int i915_gem_get_cacheing_ioctl(struct drm_device *dev, void *data, + struct drm_file *file); +int i915_gem_set_cacheing_ioctl(struct drm_device *dev, void *data, + struct drm_file *file); int i915_gem_throttle_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int i915_gem_madvise_ioctl(struct drm_device *dev, void *data, |